master
1//===-- sanitizer_common_interceptors.inc -----------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Common function interceptors for tools like AddressSanitizer,
10// ThreadSanitizer, MemorySanitizer, etc.
11//
12// This file should be included into the tool's interceptor file,
13// which has to define its own macros:
14// COMMON_INTERCEPTOR_ENTER
15// COMMON_INTERCEPTOR_ENTER_NOIGNORE
16// COMMON_INTERCEPTOR_READ_RANGE
17// COMMON_INTERCEPTOR_WRITE_RANGE
18// COMMON_INTERCEPTOR_INITIALIZE_RANGE
19// COMMON_INTERCEPTOR_DIR_ACQUIRE
20// COMMON_INTERCEPTOR_FD_ACQUIRE
21// COMMON_INTERCEPTOR_FD_RELEASE
22// COMMON_INTERCEPTOR_FD_ACCESS
23// COMMON_INTERCEPTOR_SET_THREAD_NAME
24// COMMON_INTERCEPTOR_DLOPEN
25// COMMON_INTERCEPTOR_ON_EXIT
26// COMMON_INTERCEPTOR_SET_PTHREAD_NAME
27// COMMON_INTERCEPTOR_HANDLE_RECVMSG
28// COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED
29// COMMON_INTERCEPTOR_MMAP_IMPL
30// COMMON_INTERCEPTOR_MUNMAP_IMPL
31// COMMON_INTERCEPTOR_COPY_STRING
32// COMMON_INTERCEPTOR_STRNDUP_IMPL
33// COMMON_INTERCEPTOR_STRERROR
34//===----------------------------------------------------------------------===//
35
36#include <stdarg.h>
37
38#include "interception/interception.h"
39#include "sanitizer_addrhashmap.h"
40#include "sanitizer_dl.h"
41#include "sanitizer_errno.h"
42#include "sanitizer_placement_new.h"
43#include "sanitizer_platform_interceptors.h"
44#include "sanitizer_platform_limits_posix.h"
45#include "sanitizer_symbolizer.h"
46#include "sanitizer_tls_get_addr.h"
47
48#if SANITIZER_INTERCEPTOR_HOOKS
49#define CALL_WEAK_INTERCEPTOR_HOOK(f, ...) f(__VA_ARGS__);
50#define DECLARE_WEAK_INTERCEPTOR_HOOK(f, ...) \
51 SANITIZER_INTERFACE_WEAK_DEF(void, f, __VA_ARGS__) {}
52#else
53#define DECLARE_WEAK_INTERCEPTOR_HOOK(f, ...)
54#define CALL_WEAK_INTERCEPTOR_HOOK(f, ...)
55
56#endif // SANITIZER_INTERCEPTOR_HOOKS
57
58#if SANITIZER_WINDOWS && !defined(va_copy)
59#define va_copy(dst, src) ((dst) = (src))
60#endif // _WIN32
61
62#if SANITIZER_FREEBSD
63#define pthread_setname_np pthread_set_name_np
64#define inet_aton __inet_aton
65#define inet_pton __inet_pton
66#define iconv __bsd_iconv
67#endif
68
69#if SANITIZER_NETBSD
70#define clock_getres __clock_getres50
71#define clock_gettime __clock_gettime50
72#define clock_settime __clock_settime50
73#define ctime __ctime50
74#define ctime_r __ctime_r50
75#define devname __devname50
76#define fgetpos __fgetpos50
77#define fsetpos __fsetpos50
78#define fstatvfs __fstatvfs90
79#define fstatvfs1 __fstatvfs190
80#define fts_children __fts_children60
81#define fts_close __fts_close60
82#define fts_open __fts_open60
83#define fts_read __fts_read60
84#define fts_set __fts_set60
85#define getitimer __getitimer50
86#define getmntinfo __getmntinfo90
87#define getpwent __getpwent50
88#define getpwnam __getpwnam50
89#define getpwnam_r __getpwnam_r50
90#define getpwuid __getpwuid50
91#define getpwuid_r __getpwuid_r50
92#define getutent __getutent50
93#define getutxent __getutxent50
94#define getutxid __getutxid50
95#define getutxline __getutxline50
96#define getvfsstat __getvfsstat90
97#define pututxline __pututxline50
98#define glob __glob30
99#define gmtime __gmtime50
100#define gmtime_r __gmtime_r50
101#define localtime __locatime50
102#define localtime_r __localtime_r50
103#define mktime __mktime50
104#define lstat __lstat50
105#define opendir __opendir30
106#define readdir __readdir30
107#define readdir_r __readdir_r30
108#define scandir __scandir30
109#define setitimer __setitimer50
110#define setlocale __setlocale50
111#define shmctl __shmctl50
112#define sigaltstack __sigaltstack14
113#define sigemptyset __sigemptyset14
114#define sigfillset __sigfillset14
115#define sigpending __sigpending14
116#define sigprocmask __sigprocmask14
117#define sigtimedwait __sigtimedwait50
118#define stat __stat50
119#define statvfs __statvfs90
120#define statvfs1 __statvfs190
121#define time __time50
122#define times __times13
123#define unvis __unvis50
124#define wait3 __wait350
125#define wait4 __wait450
126extern const unsigned short *_ctype_tab_;
127extern const short *_toupper_tab_;
128extern const short *_tolower_tab_;
129#endif
130
131#if SANITIZER_LINUX && SANITIZER_SPARC32
132// On 32-bit Linux/sparc64, double and long double are identical and glibc
133// uses a __nldbl_ (no long double) prefix for various stdio functions.
134# define __isoc23_fscanf __nldbl___isoc23_fscanf
135# define __isoc23_scanf __nldbl___isoc23_scanf
136# define __isoc23_sscanf __nldbl___isoc23_sscanf
137# define __isoc23_vfscanf __nldbl___isoc23_vfscanf
138# define __isoc23_vscanf __nldbl___isoc23_vscanf
139# define __isoc23_vsscanf __nldbl___isoc23_vsscanf
140# define __isoc99_fscanf __nldbl___isoc99_fscanf
141# define __isoc99_scanf __nldbl___isoc99_scanf
142# define __isoc99_sscanf __nldbl___isoc99_sscanf
143# define __isoc99_vfscanf __nldbl___isoc99_vfscanf
144# define __isoc99_vscanf __nldbl___isoc99_vscanf
145# define __isoc99_vsscanf __nldbl___isoc99_vsscanf
146# define asprintf __nldbl_asprintf
147# define fprintf __nldbl_fprintf
148# define fscanf __nldbl_fscanf
149# define printf __nldbl_printf
150# define scanf __nldbl_scanf
151# define snprintf __nldbl_snprintf
152# define sprintf __nldbl_sprintf
153# define sscanf __nldbl_sscanf
154# define vasprintf __nldbl_vasprintf
155# define vfprintf __nldbl_vfprintf
156# define vfscanf __nldbl_vfscanf
157# define vprintf __nldbl_vprintf
158# define vscanf __nldbl_vscanf
159# define vsnprintf __nldbl_vsnprintf
160# define vsprintf __nldbl_vsprintf
161# define vsscanf __nldbl_vsscanf
162#endif
163
164#if SANITIZER_MUSL && \
165 (defined(__i386__) || defined(__arm__) || SANITIZER_MIPS32 || SANITIZER_PPC32)
166// musl 1.2.0 on existing 32-bit architectures uses new symbol names for the
167// time-related functions that take 64-bit time_t values. See
168// https://musl.libc.org/time64.html
169#define adjtime __adjtime64
170#define adjtimex __adjtimex_time64
171#define aio_suspend __aio_suspend_time64
172#define clock_adjtime __clock_adjtime64
173#define clock_getres __clock_getres_time64
174#define clock_gettime __clock_gettime64
175#define clock_nanosleep __clock_nanosleep_time64
176#define clock_settime __clock_settime64
177#define cnd_timedwait __cnd_timedwait_time64
178#define ctime __ctime64
179#define ctime_r __ctime64_r
180#define difftime __difftime64
181#define dlsym __dlsym_time64
182#define fstatat __fstatat_time64
183#define fstat __fstat_time64
184#define ftime __ftime64
185#define futimens __futimens_time64
186#define futimesat __futimesat_time64
187#define futimes __futimes_time64
188#define getitimer __getitimer_time64
189#define getrusage __getrusage_time64
190#define gettimeofday __gettimeofday_time64
191#define gmtime __gmtime64
192#define gmtime_r __gmtime64_r
193#define localtime __localtime64
194#define localtime_r __localtime64_r
195#define lstat __lstat_time64
196#define lutimes __lutimes_time64
197#define mktime __mktime64
198#define mq_timedreceive __mq_timedreceive_time64
199#define mq_timedsend __mq_timedsend_time64
200#define mtx_timedlock __mtx_timedlock_time64
201#define nanosleep __nanosleep_time64
202#define ppoll __ppoll_time64
203#define pselect __pselect_time64
204#define pthread_cond_timedwait __pthread_cond_timedwait_time64
205#define pthread_mutex_timedlock __pthread_mutex_timedlock_time64
206#define pthread_rwlock_timedrdlock __pthread_rwlock_timedrdlock_time64
207#define pthread_rwlock_timedwrlock __pthread_rwlock_timedwrlock_time64
208#define pthread_timedjoin_np __pthread_timedjoin_np_time64
209#define recvmmsg __recvmmsg_time64
210#define sched_rr_get_interval __sched_rr_get_interval_time64
211#define select __select_time64
212#define semtimedop __semtimedop_time64
213#define sem_timedwait __sem_timedwait_time64
214#define setitimer __setitimer_time64
215#define settimeofday __settimeofday_time64
216#define sigtimedwait __sigtimedwait_time64
217#define stat __stat_time64
218#define stime __stime64
219#define thrd_sleep __thrd_sleep_time64
220#define timegm __timegm_time64
221#define timerfd_gettime __timerfd_gettime64
222#define timerfd_settime __timerfd_settime64
223#define timer_gettime __timer_gettime64
224#define timer_settime __timer_settime64
225#define timespec_get __timespec_get_time64
226#define time __time64
227#define utimensat __utimensat_time64
228#define utimes __utimes_time64
229#define utime __utime64
230#define wait3 __wait3_time64
231#define wait4 __wait4_time64
232#endif
233
234#ifndef COMMON_INTERCEPTOR_INITIALIZE_RANGE
235#define COMMON_INTERCEPTOR_INITIALIZE_RANGE(p, size) {}
236#endif
237
238#ifndef COMMON_INTERCEPTOR_UNPOISON_PARAM
239#define COMMON_INTERCEPTOR_UNPOISON_PARAM(count) {}
240#endif
241
242#ifndef COMMON_INTERCEPTOR_FD_ACCESS
243#define COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd) {}
244#endif
245
246#ifndef COMMON_INTERCEPTOR_HANDLE_RECVMSG
247#define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg) ((void)(msg))
248#endif
249
250#ifndef COMMON_INTERCEPTOR_FILE_OPEN
251#define COMMON_INTERCEPTOR_FILE_OPEN(ctx, file, path) {}
252#endif
253
254#ifndef COMMON_INTERCEPTOR_FILE_CLOSE
255#define COMMON_INTERCEPTOR_FILE_CLOSE(ctx, file) {}
256#endif
257
258#ifndef COMMON_INTERCEPTOR_LIBRARY_LOADED
259#define COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, handle) {}
260#endif
261
262#ifndef COMMON_INTERCEPTOR_LIBRARY_UNLOADED
263#define COMMON_INTERCEPTOR_LIBRARY_UNLOADED() {}
264#endif
265
266#ifndef COMMON_INTERCEPTOR_ENTER_NOIGNORE
267#define COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, ...) \
268 COMMON_INTERCEPTOR_ENTER(ctx, __VA_ARGS__)
269#endif
270
271#ifndef COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED
272#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED (0)
273#endif
274
275#define COMMON_INTERCEPTOR_READ_STRING(ctx, s, n) \
276 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s), \
277 common_flags()->strict_string_checks ? (internal_strlen(s)) + 1 : (n) )
278
279#ifndef COMMON_INTERCEPTOR_DLOPEN
280#define COMMON_INTERCEPTOR_DLOPEN(filename, flag) \
281 ({ CheckNoDeepBind(filename, flag); REAL(dlopen)(filename, flag); })
282#endif
283
284#ifndef COMMON_INTERCEPTOR_GET_TLS_RANGE
285#define COMMON_INTERCEPTOR_GET_TLS_RANGE(begin, end) *begin = *end = 0;
286#endif
287
288#ifndef COMMON_INTERCEPTOR_ACQUIRE
289#define COMMON_INTERCEPTOR_ACQUIRE(ctx, u) {}
290#endif
291
292#ifndef COMMON_INTERCEPTOR_RELEASE
293#define COMMON_INTERCEPTOR_RELEASE(ctx, u) {}
294#endif
295
296#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_START
297#define COMMON_INTERCEPTOR_USER_CALLBACK_START() {}
298#endif
299
300#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_END
301#define COMMON_INTERCEPTOR_USER_CALLBACK_END() {}
302#endif
303
304#ifdef SANITIZER_NLDBL_VERSION
305#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \
306 COMMON_INTERCEPT_FUNCTION_VER(fn, SANITIZER_NLDBL_VERSION)
307#else
308#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \
309 COMMON_INTERCEPT_FUNCTION(fn)
310#endif
311
312#if SANITIZER_GLIBC
313// If we could not find the versioned symbol, fall back to an unversioned
314// lookup. This is needed to work around a GLibc bug that causes dlsym
315// with RTLD_NEXT to return the oldest versioned symbol.
316// See https://sourceware.org/bugzilla/show_bug.cgi?id=14932.
317// For certain symbols (e.g. regexec) we have to perform a versioned lookup,
318// but that versioned symbol will only exist for architectures where the
319// oldest Glibc version pre-dates support for that architecture.
320// For example, regexec@GLIBC_2.3.4 exists on x86_64, but not RISC-V.
321// See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98920.
322#define COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(fn, ver) \
323 COMMON_INTERCEPT_FUNCTION_VER_UNVERSIONED_FALLBACK(fn, ver)
324#else
325#define COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(fn, ver) \
326 COMMON_INTERCEPT_FUNCTION(fn)
327#endif
328
329#ifndef COMMON_INTERCEPTOR_MMAP_IMPL
330#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, \
331 off) \
332 { return REAL(mmap)(addr, sz, prot, flags, fd, off); }
333#endif
334
335#ifndef COMMON_INTERCEPTOR_MUNMAP_IMPL
336#define COMMON_INTERCEPTOR_MUNMAP_IMPL(ctx, addr, sz) \
337 { return REAL(munmap)(addr, sz); }
338#endif
339
340#ifndef COMMON_INTERCEPTOR_COPY_STRING
341#define COMMON_INTERCEPTOR_COPY_STRING(ctx, to, from, size) {}
342#endif
343
344#ifndef COMMON_INTERCEPTOR_STRNDUP_IMPL
345#define COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size) \
346 COMMON_INTERCEPTOR_ENTER(ctx, strndup, s, size); \
347 uptr copy_length = internal_strnlen(s, size); \
348 char *new_mem = (char *)WRAP(malloc)(copy_length + 1); \
349 if (common_flags()->intercept_strndup) { \
350 COMMON_INTERCEPTOR_READ_STRING(ctx, s, Min<uptr>(size, copy_length + 1)); \
351 } \
352 if (new_mem) { \
353 COMMON_INTERCEPTOR_COPY_STRING(ctx, new_mem, s, copy_length); \
354 internal_memcpy(new_mem, s, copy_length); \
355 new_mem[copy_length] = '\0'; \
356 } \
357 return new_mem;
358#endif
359
360#ifndef COMMON_INTERCEPTOR_STRERROR
361#define COMMON_INTERCEPTOR_STRERROR() {}
362#endif
363
364struct FileMetadata {
365 // For open_memstream().
366 char **addr;
367 SIZE_T *size;
368};
369
370struct CommonInterceptorMetadata {
371 enum {
372 CIMT_INVALID = 0,
373 CIMT_FILE
374 } type;
375 union {
376 FileMetadata file;
377 };
378};
379
380#if SI_POSIX
381typedef AddrHashMap<CommonInterceptorMetadata, 31051> MetadataHashMap;
382
383static MetadataHashMap *interceptor_metadata_map;
384
385UNUSED static void SetInterceptorMetadata(__sanitizer_FILE *addr,
386 const FileMetadata &file) {
387 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr);
388 CHECK(h.created());
389 h->type = CommonInterceptorMetadata::CIMT_FILE;
390 h->file = file;
391}
392
393UNUSED static const FileMetadata *GetInterceptorMetadata(
394 __sanitizer_FILE *addr) {
395 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr,
396 /* remove */ false,
397 /* create */ false);
398 if (addr && h.exists()) {
399 CHECK(!h.created());
400 CHECK(h->type == CommonInterceptorMetadata::CIMT_FILE);
401 return &h->file;
402 } else {
403 return 0;
404 }
405}
406
407UNUSED static void DeleteInterceptorMetadata(void *addr) {
408 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, true);
409 CHECK(h.exists());
410}
411#endif // SI_POSIX
412
413#if SANITIZER_INTERCEPT_STRLEN
414INTERCEPTOR(SIZE_T, strlen, const char *s) {
415 // Sometimes strlen is called prior to InitializeCommonInterceptors,
416 // in which case the REAL(strlen) typically used in
417 // COMMON_INTERCEPTOR_ENTER will fail. We use internal_strlen here
418 // to handle that.
419 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
420 return internal_strlen(s);
421 void *ctx;
422 COMMON_INTERCEPTOR_ENTER(ctx, strlen, s);
423 SIZE_T result = REAL(strlen)(s);
424 if (common_flags()->intercept_strlen)
425 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, result + 1);
426 return result;
427}
428#define INIT_STRLEN COMMON_INTERCEPT_FUNCTION(strlen)
429#else
430#define INIT_STRLEN
431#endif
432
433#if SANITIZER_INTERCEPT_STRNLEN
434INTERCEPTOR(SIZE_T, strnlen, const char *s, SIZE_T maxlen) {
435 void *ctx;
436 COMMON_INTERCEPTOR_ENTER(ctx, strnlen, s, maxlen);
437 SIZE_T length = REAL(strnlen)(s, maxlen);
438 if (common_flags()->intercept_strlen)
439 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, Min(length + 1, maxlen));
440 return length;
441}
442#define INIT_STRNLEN COMMON_INTERCEPT_FUNCTION(strnlen)
443#else
444#define INIT_STRNLEN
445#endif
446
447#if SANITIZER_INTERCEPT_STRNDUP
448INTERCEPTOR(char*, strndup, const char *s, usize size) {
449 void *ctx;
450 COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size);
451}
452#define INIT_STRNDUP COMMON_INTERCEPT_FUNCTION(strndup)
453#else
454#define INIT_STRNDUP
455#endif // SANITIZER_INTERCEPT_STRNDUP
456
457#if SANITIZER_INTERCEPT___STRNDUP
458INTERCEPTOR(char*, __strndup, const char *s, usize size) {
459 void *ctx;
460 COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size);
461}
462#define INIT___STRNDUP COMMON_INTERCEPT_FUNCTION(__strndup)
463#else
464#define INIT___STRNDUP
465#endif // SANITIZER_INTERCEPT___STRNDUP
466
467#if SANITIZER_INTERCEPT_TEXTDOMAIN
468INTERCEPTOR(char*, textdomain, const char *domainname) {
469 void *ctx;
470 COMMON_INTERCEPTOR_ENTER(ctx, textdomain, domainname);
471 if (domainname) COMMON_INTERCEPTOR_READ_STRING(ctx, domainname, 0);
472 char *domain = REAL(textdomain)(domainname);
473 if (domain) {
474 COMMON_INTERCEPTOR_INITIALIZE_RANGE(domain, internal_strlen(domain) + 1);
475 }
476 return domain;
477}
478#define INIT_TEXTDOMAIN COMMON_INTERCEPT_FUNCTION(textdomain)
479#else
480#define INIT_TEXTDOMAIN
481#endif
482
483#if SANITIZER_INTERCEPT_STRCMP || SANITIZER_INTERCEPT_MEMCMP
484[[maybe_unused]] static inline int CharCmpX(unsigned char c1,
485 unsigned char c2) {
486 return (c1 == c2) ? 0 : (c1 < c2) ? -1 : 1;
487}
488#endif
489
490#if SANITIZER_INTERCEPT_STRCMP
491DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, uptr called_pc,
492 const char *s1, const char *s2, int result)
493
494INTERCEPTOR(int, strcmp, const char *s1, const char *s2) {
495 void *ctx;
496 COMMON_INTERCEPTOR_ENTER(ctx, strcmp, s1, s2);
497 unsigned char c1, c2;
498 uptr i;
499 for (i = 0;; i++) {
500 c1 = (unsigned char)s1[i];
501 c2 = (unsigned char)s2[i];
502 if (c1 != c2 || c1 == '\0') break;
503 }
504 if (common_flags()->intercept_strcmp) {
505 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1);
506 COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1);
507 }
508 int result = CharCmpX(c1, c2);
509 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, GET_CALLER_PC(), s1,
510 s2, result);
511 return result;
512}
513
514DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, uptr called_pc,
515 const char *s1, const char *s2, usize n,
516 int result)
517
518INTERCEPTOR(int, strncmp, const char *s1, const char *s2, usize size) {
519 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
520 return internal_strncmp(s1, s2, size);
521 void *ctx;
522 COMMON_INTERCEPTOR_ENTER(ctx, strncmp, s1, s2, size);
523 unsigned char c1 = 0, c2 = 0;
524 usize i;
525 for (i = 0; i < size; i++) {
526 c1 = (unsigned char)s1[i];
527 c2 = (unsigned char)s2[i];
528 if (c1 != c2 || c1 == '\0') break;
529 }
530 usize i1 = i;
531 usize i2 = i;
532 if (common_flags()->strict_string_checks) {
533 for (; i1 < size && s1[i1]; i1++) {}
534 for (; i2 < size && s2[i2]; i2++) {}
535 }
536 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size));
537 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size));
538 int result = CharCmpX(c1, c2);
539 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, GET_CALLER_PC(), s1,
540 s2, size, result);
541 return result;
542}
543
544#define INIT_STRCMP COMMON_INTERCEPT_FUNCTION(strcmp)
545#define INIT_STRNCMP COMMON_INTERCEPT_FUNCTION(strncmp)
546#else
547#define INIT_STRCMP
548#define INIT_STRNCMP
549#endif
550
551#if SANITIZER_INTERCEPT_STRCASECMP
552static inline int CharCaseCmp(unsigned char c1, unsigned char c2) {
553 int c1_low = ToLower(c1);
554 int c2_low = ToLower(c2);
555 return c1_low - c2_low;
556}
557
558DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, uptr called_pc,
559 const char *s1, const char *s2, int result)
560
561INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) {
562 void *ctx;
563 COMMON_INTERCEPTOR_ENTER(ctx, strcasecmp, s1, s2);
564 unsigned char c1 = 0, c2 = 0;
565 uptr i;
566 for (i = 0;; i++) {
567 c1 = (unsigned char)s1[i];
568 c2 = (unsigned char)s2[i];
569 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break;
570 }
571 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1);
572 COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1);
573 int result = CharCaseCmp(c1, c2);
574 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, GET_CALLER_PC(),
575 s1, s2, result);
576 return result;
577}
578
579DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, uptr called_pc,
580 const char *s1, const char *s2, usize size,
581 int result)
582
583INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, SIZE_T size) {
584 void *ctx;
585 COMMON_INTERCEPTOR_ENTER(ctx, strncasecmp, s1, s2, size);
586 unsigned char c1 = 0, c2 = 0;
587 usize i;
588 for (i = 0; i < size; i++) {
589 c1 = (unsigned char)s1[i];
590 c2 = (unsigned char)s2[i];
591 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break;
592 }
593 usize i1 = i;
594 usize i2 = i;
595 if (common_flags()->strict_string_checks) {
596 for (; i1 < size && s1[i1]; i1++) {}
597 for (; i2 < size && s2[i2]; i2++) {}
598 }
599 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size));
600 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size));
601 int result = CharCaseCmp(c1, c2);
602 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, GET_CALLER_PC(),
603 s1, s2, size, result);
604 return result;
605}
606
607#define INIT_STRCASECMP COMMON_INTERCEPT_FUNCTION(strcasecmp)
608#define INIT_STRNCASECMP COMMON_INTERCEPT_FUNCTION(strncasecmp)
609#else
610#define INIT_STRCASECMP
611#define INIT_STRNCASECMP
612#endif
613
614#if SANITIZER_INTERCEPT_STRSTR || SANITIZER_INTERCEPT_STRCASESTR
615static inline void StrstrCheck(void *ctx, char *r, const char *s1,
616 const char *s2) {
617 uptr len1 = internal_strlen(s1);
618 uptr len2 = internal_strlen(s2);
619 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r ? r - s1 + len2 : len1 + 1);
620 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2 + 1);
621}
622#endif
623
624#if SANITIZER_INTERCEPT_STRSTR
625
626DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, uptr called_pc,
627 const char *s1, const char *s2, char *result)
628
629INTERCEPTOR(char*, strstr, const char *s1, const char *s2) {
630 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
631 return internal_strstr(s1, s2);
632 void *ctx;
633 COMMON_INTERCEPTOR_ENTER(ctx, strstr, s1, s2);
634 char *r = REAL(strstr)(s1, s2);
635 if (common_flags()->intercept_strstr)
636 StrstrCheck(ctx, r, s1, s2);
637 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, GET_CALLER_PC(), s1,
638 s2, r);
639 return r;
640}
641
642#define INIT_STRSTR COMMON_INTERCEPT_FUNCTION(strstr);
643#else
644#define INIT_STRSTR
645#endif
646
647#if SANITIZER_INTERCEPT_STRCASESTR
648
649DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, uptr called_pc,
650 const char *s1, const char *s2, char *result)
651
652INTERCEPTOR(char*, strcasestr, const char *s1, const char *s2) {
653 void *ctx;
654 COMMON_INTERCEPTOR_ENTER(ctx, strcasestr, s1, s2);
655 char *r = REAL(strcasestr)(s1, s2);
656 if (common_flags()->intercept_strstr)
657 StrstrCheck(ctx, r, s1, s2);
658 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, GET_CALLER_PC(),
659 s1, s2, r);
660 return r;
661}
662
663#define INIT_STRCASESTR COMMON_INTERCEPT_FUNCTION(strcasestr);
664#else
665#define INIT_STRCASESTR
666#endif
667
668#if SANITIZER_INTERCEPT_STRTOK
669
670INTERCEPTOR(char*, strtok, char *str, const char *delimiters) {
671 void *ctx;
672 COMMON_INTERCEPTOR_ENTER(ctx, strtok, str, delimiters);
673 if (!common_flags()->intercept_strtok) {
674 return REAL(strtok)(str, delimiters);
675 }
676 if (common_flags()->strict_string_checks) {
677 // If strict_string_checks is enabled, we check the whole first argument
678 // string on the first call (strtok saves this string in a static buffer
679 // for subsequent calls). We do not need to check strtok's result.
680 // As the delimiters can change, we check them every call.
681 if (str != nullptr) {
682 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1);
683 }
684 COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters,
685 internal_strlen(delimiters) + 1);
686 return REAL(strtok)(str, delimiters);
687 } else {
688 // However, when strict_string_checks is disabled we cannot check the
689 // whole string on the first call. Instead, we check the result string
690 // which is guaranteed to be a NULL-terminated substring of the first
691 // argument. We also conservatively check one character of str and the
692 // delimiters.
693 if (str != nullptr) {
694 COMMON_INTERCEPTOR_READ_STRING(ctx, str, 1);
695 }
696 COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters, 1);
697 char *result = REAL(strtok)(str, delimiters);
698 if (result != nullptr) {
699 COMMON_INTERCEPTOR_READ_RANGE(ctx, result, internal_strlen(result) + 1);
700 } else if (str != nullptr) {
701 // No delimiter were found, it's safe to assume that the entire str was
702 // scanned.
703 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1);
704 }
705 return result;
706 }
707}
708
709#define INIT_STRTOK COMMON_INTERCEPT_FUNCTION(strtok)
710#else
711#define INIT_STRTOK
712#endif
713
714#if SANITIZER_INTERCEPT_MEMMEM
715DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, uptr called_pc,
716 const void *s1, SIZE_T len1, const void *s2,
717 SIZE_T len2, void *result)
718
719INTERCEPTOR(void*, memmem, const void *s1, SIZE_T len1, const void *s2,
720 SIZE_T len2) {
721 void *ctx;
722 COMMON_INTERCEPTOR_ENTER(ctx, memmem, s1, len1, s2, len2);
723 void *r = REAL(memmem)(s1, len1, s2, len2);
724 if (common_flags()->intercept_memmem) {
725 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, len1);
726 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2);
727 }
728 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, GET_CALLER_PC(),
729 s1, len1, s2, len2, r);
730 return r;
731}
732
733#define INIT_MEMMEM COMMON_INTERCEPT_FUNCTION(memmem);
734#else
735#define INIT_MEMMEM
736#endif // SANITIZER_INTERCEPT_MEMMEM
737
738#if SANITIZER_INTERCEPT_STRCHR
739INTERCEPTOR(char*, strchr, const char *s, int c) {
740 void *ctx;
741 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
742 return internal_strchr(s, c);
743 COMMON_INTERCEPTOR_ENTER(ctx, strchr, s, c);
744 char *result = REAL(strchr)(s, c);
745 if (common_flags()->intercept_strchr) {
746 // Keep strlen as macro argument, as macro may ignore it.
747 COMMON_INTERCEPTOR_READ_STRING(ctx, s,
748 (result ? result - s : internal_strlen(s)) + 1);
749 }
750 return result;
751}
752#define INIT_STRCHR COMMON_INTERCEPT_FUNCTION(strchr)
753#else
754#define INIT_STRCHR
755#endif
756
757#if SANITIZER_INTERCEPT_STRCHRNUL
758INTERCEPTOR(char*, strchrnul, const char *s, int c) {
759 void *ctx;
760 COMMON_INTERCEPTOR_ENTER(ctx, strchrnul, s, c);
761 char *result = REAL(strchrnul)(s, c);
762 uptr len = result - s + 1;
763 if (common_flags()->intercept_strchr)
764 COMMON_INTERCEPTOR_READ_STRING(ctx, s, len);
765 return result;
766}
767#define INIT_STRCHRNUL COMMON_INTERCEPT_FUNCTION(strchrnul)
768#else
769#define INIT_STRCHRNUL
770#endif
771
772#if SANITIZER_INTERCEPT_STRRCHR
773INTERCEPTOR(char*, strrchr, const char *s, int c) {
774 void *ctx;
775 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
776 return internal_strrchr(s, c);
777 COMMON_INTERCEPTOR_ENTER(ctx, strrchr, s, c);
778 if (common_flags()->intercept_strchr)
779 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1);
780 return REAL(strrchr)(s, c);
781}
782#define INIT_STRRCHR COMMON_INTERCEPT_FUNCTION(strrchr)
783#else
784#define INIT_STRRCHR
785#endif
786
787#if SANITIZER_INTERCEPT_STRSPN
788INTERCEPTOR(SIZE_T, strspn, const char *s1, const char *s2) {
789 void *ctx;
790 COMMON_INTERCEPTOR_ENTER(ctx, strspn, s1, s2);
791 SIZE_T r = REAL(strspn)(s1, s2);
792 if (common_flags()->intercept_strspn) {
793 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1);
794 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1);
795 }
796 return r;
797}
798
799INTERCEPTOR(SIZE_T, strcspn, const char *s1, const char *s2) {
800 void *ctx;
801 COMMON_INTERCEPTOR_ENTER(ctx, strcspn, s1, s2);
802 SIZE_T r = REAL(strcspn)(s1, s2);
803 if (common_flags()->intercept_strspn) {
804 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1);
805 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1);
806 }
807 return r;
808}
809
810#define INIT_STRSPN \
811 COMMON_INTERCEPT_FUNCTION(strspn); \
812 COMMON_INTERCEPT_FUNCTION(strcspn);
813#else
814#define INIT_STRSPN
815#endif
816
817#if SANITIZER_INTERCEPT_STRPBRK
818INTERCEPTOR(char *, strpbrk, const char *s1, const char *s2) {
819 void *ctx;
820 COMMON_INTERCEPTOR_ENTER(ctx, strpbrk, s1, s2);
821 char *r = REAL(strpbrk)(s1, s2);
822 if (common_flags()->intercept_strpbrk) {
823 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1);
824 COMMON_INTERCEPTOR_READ_STRING(ctx, s1,
825 r ? r - s1 + 1 : internal_strlen(s1) + 1);
826 }
827 return r;
828}
829
830#define INIT_STRPBRK COMMON_INTERCEPT_FUNCTION(strpbrk);
831#else
832#define INIT_STRPBRK
833#endif
834
835#if SANITIZER_INTERCEPT_MEMCMP
836DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, uptr called_pc,
837 const void *s1, const void *s2, usize n,
838 int result)
839
840// Common code for `memcmp` and `bcmp`.
841int MemcmpInterceptorCommon(void *ctx,
842 int (*real_fn)(const void *, const void *, usize),
843 const void *a1, const void *a2, usize size) {
844 if (common_flags()->intercept_memcmp) {
845 if (common_flags()->strict_memcmp) {
846 // Check the entire regions even if the first bytes of the buffers are
847 // different.
848 COMMON_INTERCEPTOR_READ_RANGE(ctx, a1, size);
849 COMMON_INTERCEPTOR_READ_RANGE(ctx, a2, size);
850 // Fallthrough to REAL(memcmp) below.
851 } else {
852 unsigned char c1 = 0, c2 = 0;
853 const unsigned char *s1 = (const unsigned char*)a1;
854 const unsigned char *s2 = (const unsigned char*)a2;
855 usize i;
856 for (i = 0; i < size; i++) {
857 c1 = s1[i];
858 c2 = s2[i];
859 if (c1 != c2) break;
860 }
861 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, size));
862 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, size));
863 int r = CharCmpX(c1, c2);
864 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(),
865 a1, a2, size, r);
866 return r;
867 }
868 }
869 int result = real_fn(a1, a2, size);
870 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(), a1,
871 a2, size, result);
872 return result;
873}
874
875INTERCEPTOR(int, memcmp, const void *a1, const void *a2, usize size) {
876 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
877 return internal_memcmp(a1, a2, size);
878 void *ctx;
879 COMMON_INTERCEPTOR_ENTER(ctx, memcmp, a1, a2, size);
880 return MemcmpInterceptorCommon(ctx, REAL(memcmp), a1, a2, size);
881}
882
883#define INIT_MEMCMP COMMON_INTERCEPT_FUNCTION(memcmp)
884#else
885#define INIT_MEMCMP
886#endif
887
888#if SANITIZER_INTERCEPT_BCMP
889INTERCEPTOR(int, bcmp, const void *a1, const void *a2, usize size) {
890 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
891 return internal_memcmp(a1, a2, size);
892 void *ctx;
893 COMMON_INTERCEPTOR_ENTER(ctx, bcmp, a1, a2, size);
894 return MemcmpInterceptorCommon(ctx, REAL(bcmp), a1, a2, size);
895}
896
897#define INIT_BCMP COMMON_INTERCEPT_FUNCTION(bcmp)
898#else
899#define INIT_BCMP
900#endif
901
902#if SANITIZER_INTERCEPT_MEMCHR
903INTERCEPTOR(void*, memchr, const void *s, int c, SIZE_T n) {
904 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
905 return internal_memchr(s, c, n);
906 void *ctx;
907 COMMON_INTERCEPTOR_ENTER(ctx, memchr, s, c, n);
908#if SANITIZER_WINDOWS
909 void *res;
910 if (REAL(memchr)) {
911 res = REAL(memchr)(s, c, n);
912 } else {
913 res = internal_memchr(s, c, n);
914 }
915#else
916 void *res = REAL(memchr)(s, c, n);
917#endif
918 uptr len = res ? (char *)res - (const char *)s + 1 : n;
919 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, len);
920 return res;
921}
922
923#define INIT_MEMCHR COMMON_INTERCEPT_FUNCTION(memchr)
924#else
925#define INIT_MEMCHR
926#endif
927
928#if SANITIZER_INTERCEPT_MEMRCHR
929INTERCEPTOR(void*, memrchr, const void *s, int c, SIZE_T n) {
930 void *ctx;
931 COMMON_INTERCEPTOR_ENTER(ctx, memrchr, s, c, n);
932 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, n);
933 return REAL(memrchr)(s, c, n);
934}
935
936#define INIT_MEMRCHR COMMON_INTERCEPT_FUNCTION(memrchr)
937#else
938#define INIT_MEMRCHR
939#endif
940
941#if SANITIZER_INTERCEPT_FREXP
942INTERCEPTOR(double, frexp, double x, int *exp) {
943 void *ctx;
944 COMMON_INTERCEPTOR_ENTER(ctx, frexp, x, exp);
945 // Assuming frexp() always writes to |exp|.
946 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
947 double res = REAL(frexp)(x, exp);
948 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp));
949 return res;
950}
951
952#define INIT_FREXP COMMON_INTERCEPT_FUNCTION(frexp);
953#else
954#define INIT_FREXP
955#endif // SANITIZER_INTERCEPT_FREXP
956
957#if SANITIZER_INTERCEPT_FREXPF
958INTERCEPTOR(float, frexpf, float x, int *exp) {
959 void *ctx;
960 COMMON_INTERCEPTOR_ENTER(ctx, frexpf, x, exp);
961 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
962 float res = REAL(frexpf)(x, exp);
963 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp));
964 return res;
965}
966
967# define INIT_FREXPF COMMON_INTERCEPT_FUNCTION(frexpf);
968#else
969# define INIT_FREXPF
970#endif
971
972#if SANITIZER_INTERCEPT_FREXPL
973INTERCEPTOR(long double, frexpl, long double x, int *exp) {
974 void *ctx;
975 COMMON_INTERCEPTOR_ENTER(ctx, frexpl, x, exp);
976 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
977 long double res = REAL(frexpl)(x, exp);
978 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp));
979 return res;
980}
981
982# define INIT_FREXPL COMMON_INTERCEPT_FUNCTION_LDBL(frexpl)
983#else
984# define INIT_FREXPL
985#endif
986
987#if SI_POSIX
988static void write_iovec(void *ctx, struct __sanitizer_iovec *iovec,
989 SIZE_T iovlen, SIZE_T maxlen) {
990 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
991 SSIZE_T sz = Min(iovec[i].iov_len, maxlen);
992 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec[i].iov_base, sz);
993 maxlen -= sz;
994 }
995}
996
997static void read_iovec(void *ctx, struct __sanitizer_iovec *iovec,
998 SIZE_T iovlen, SIZE_T maxlen) {
999 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec) * iovlen);
1000 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
1001 SSIZE_T sz = Min(iovec[i].iov_len, maxlen);
1002 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec[i].iov_base, sz);
1003 maxlen -= sz;
1004 }
1005}
1006#endif
1007
1008#if SANITIZER_INTERCEPT_READ
1009INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) {
1010 void *ctx;
1011 COMMON_INTERCEPTOR_ENTER(ctx, read, fd, ptr, count);
1012 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1013 // FIXME: under ASan the call below may write to freed memory and corrupt
1014 // its metadata. See
1015 // https://github.com/google/sanitizers/issues/321.
1016 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(read)(fd, ptr, count);
1017 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
1018 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1019 return res;
1020}
1021#define INIT_READ COMMON_INTERCEPT_FUNCTION(read)
1022#else
1023#define INIT_READ
1024#endif
1025
1026#if SANITIZER_INTERCEPT_FREAD
1027INTERCEPTOR(SIZE_T, fread, void *ptr, SIZE_T size, SIZE_T nmemb, void *file) {
1028 // libc file streams can call user-supplied functions, see fopencookie.
1029 void *ctx;
1030 COMMON_INTERCEPTOR_ENTER(ctx, fread, ptr, size, nmemb, file);
1031 // FIXME: under ASan the call below may write to freed memory and corrupt
1032 // its metadata. See
1033 // https://github.com/google/sanitizers/issues/321.
1034 SIZE_T res = REAL(fread)(ptr, size, nmemb, file);
1035 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res * size);
1036 return res;
1037}
1038#define INIT_FREAD COMMON_INTERCEPT_FUNCTION(fread)
1039#else
1040#define INIT_FREAD
1041#endif
1042
1043#if SANITIZER_INTERCEPT_PREAD
1044INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) {
1045 void *ctx;
1046 COMMON_INTERCEPTOR_ENTER(ctx, pread, fd, ptr, count, offset);
1047 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1048 // FIXME: under ASan the call below may write to freed memory and corrupt
1049 // its metadata. See
1050 // https://github.com/google/sanitizers/issues/321.
1051 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pread)(fd, ptr, count, offset);
1052 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
1053 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1054 return res;
1055}
1056#define INIT_PREAD COMMON_INTERCEPT_FUNCTION(pread)
1057#else
1058#define INIT_PREAD
1059#endif
1060
1061#if SANITIZER_INTERCEPT_PREAD64
1062INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) {
1063 void *ctx;
1064 COMMON_INTERCEPTOR_ENTER(ctx, pread64, fd, ptr, count, offset);
1065 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1066 // FIXME: under ASan the call below may write to freed memory and corrupt
1067 // its metadata. See
1068 // https://github.com/google/sanitizers/issues/321.
1069 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pread64)(fd, ptr, count, offset);
1070 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
1071 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1072 return res;
1073}
1074#define INIT_PREAD64 COMMON_INTERCEPT_FUNCTION(pread64)
1075#else
1076#define INIT_PREAD64
1077#endif
1078
1079#if SANITIZER_INTERCEPT_READV
1080INTERCEPTOR_WITH_SUFFIX(SSIZE_T, readv, int fd, __sanitizer_iovec *iov,
1081 int iovcnt) {
1082 void *ctx;
1083 COMMON_INTERCEPTOR_ENTER(ctx, readv, fd, iov, iovcnt);
1084 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1085 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(readv)(fd, iov, iovcnt);
1086 if (res > 0) write_iovec(ctx, iov, iovcnt, res);
1087 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1088 return res;
1089}
1090#define INIT_READV COMMON_INTERCEPT_FUNCTION(readv)
1091#else
1092#define INIT_READV
1093#endif
1094
1095#if SANITIZER_INTERCEPT_PREADV
1096INTERCEPTOR(SSIZE_T, preadv, int fd, __sanitizer_iovec *iov, int iovcnt,
1097 OFF_T offset) {
1098 void *ctx;
1099 COMMON_INTERCEPTOR_ENTER(ctx, preadv, fd, iov, iovcnt, offset);
1100 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1101 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(preadv)(fd, iov, iovcnt, offset);
1102 if (res > 0) write_iovec(ctx, iov, iovcnt, res);
1103 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1104 return res;
1105}
1106#define INIT_PREADV COMMON_INTERCEPT_FUNCTION(preadv)
1107#else
1108#define INIT_PREADV
1109#endif
1110
1111#if SANITIZER_INTERCEPT_PREADV64
1112INTERCEPTOR(SSIZE_T, preadv64, int fd, __sanitizer_iovec *iov, int iovcnt,
1113 OFF64_T offset) {
1114 void *ctx;
1115 COMMON_INTERCEPTOR_ENTER(ctx, preadv64, fd, iov, iovcnt, offset);
1116 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1117 SSIZE_T res =
1118 COMMON_INTERCEPTOR_BLOCK_REAL(preadv64)(fd, iov, iovcnt, offset);
1119 if (res > 0) write_iovec(ctx, iov, iovcnt, res);
1120 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1121 return res;
1122}
1123#define INIT_PREADV64 COMMON_INTERCEPT_FUNCTION(preadv64)
1124#else
1125#define INIT_PREADV64
1126#endif
1127
1128#if SANITIZER_INTERCEPT_WRITE
1129INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) {
1130 void *ctx;
1131 COMMON_INTERCEPTOR_ENTER(ctx, write, fd, ptr, count);
1132 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1133 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1134 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(write)(fd, ptr, count);
1135 // FIXME: this check should be _before_ the call to
1136 // COMMON_INTERCEPTOR_BLOCK_REAL(write), not after
1137 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
1138 return res;
1139}
1140#define INIT_WRITE COMMON_INTERCEPT_FUNCTION(write)
1141#else
1142#define INIT_WRITE
1143#endif
1144
1145#if SANITIZER_INTERCEPT_FWRITE
1146INTERCEPTOR(SIZE_T, fwrite, const void *p, usize size, usize nmemb, void *file) {
1147 // libc file streams can call user-supplied functions, see fopencookie.
1148 void *ctx;
1149 COMMON_INTERCEPTOR_ENTER(ctx, fwrite, p, size, nmemb, file);
1150 SIZE_T res = REAL(fwrite)(p, size, nmemb, file);
1151 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, p, res * size);
1152 return res;
1153}
1154#define INIT_FWRITE COMMON_INTERCEPT_FUNCTION(fwrite)
1155#else
1156#define INIT_FWRITE
1157#endif
1158
1159#if SANITIZER_INTERCEPT_PWRITE
1160INTERCEPTOR(SSIZE_T, pwrite, int fd, void *ptr, SIZE_T count, OFF_T offset) {
1161 void *ctx;
1162 COMMON_INTERCEPTOR_ENTER(ctx, pwrite, fd, ptr, count, offset);
1163 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1164 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1165 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwrite)(fd, ptr, count, offset);
1166 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
1167 return res;
1168}
1169#define INIT_PWRITE COMMON_INTERCEPT_FUNCTION(pwrite)
1170#else
1171#define INIT_PWRITE
1172#endif
1173
1174#if SANITIZER_INTERCEPT_PWRITE64
1175INTERCEPTOR(SSIZE_T, pwrite64, int fd, void *ptr, OFF64_T count,
1176 OFF64_T offset) {
1177 void *ctx;
1178 COMMON_INTERCEPTOR_ENTER(ctx, pwrite64, fd, ptr, count, offset);
1179 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1180 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1181 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwrite64)(fd, ptr, count, offset);
1182 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
1183 return res;
1184}
1185#define INIT_PWRITE64 COMMON_INTERCEPT_FUNCTION(pwrite64)
1186#else
1187#define INIT_PWRITE64
1188#endif
1189
1190#if SANITIZER_INTERCEPT_WRITEV
1191INTERCEPTOR_WITH_SUFFIX(SSIZE_T, writev, int fd, __sanitizer_iovec *iov,
1192 int iovcnt) {
1193 void *ctx;
1194 COMMON_INTERCEPTOR_ENTER(ctx, writev, fd, iov, iovcnt);
1195 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1196 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1197 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(writev)(fd, iov, iovcnt);
1198 if (res > 0) read_iovec(ctx, iov, iovcnt, res);
1199 return res;
1200}
1201#define INIT_WRITEV COMMON_INTERCEPT_FUNCTION(writev)
1202#else
1203#define INIT_WRITEV
1204#endif
1205
1206#if SANITIZER_INTERCEPT_PWRITEV
1207INTERCEPTOR(SSIZE_T, pwritev, int fd, __sanitizer_iovec *iov, int iovcnt,
1208 OFF_T offset) {
1209 void *ctx;
1210 COMMON_INTERCEPTOR_ENTER(ctx, pwritev, fd, iov, iovcnt, offset);
1211 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1212 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1213 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwritev)(fd, iov, iovcnt, offset);
1214 if (res > 0) read_iovec(ctx, iov, iovcnt, res);
1215 return res;
1216}
1217#define INIT_PWRITEV COMMON_INTERCEPT_FUNCTION(pwritev)
1218#else
1219#define INIT_PWRITEV
1220#endif
1221
1222#if SANITIZER_INTERCEPT_PWRITEV64
1223INTERCEPTOR(SSIZE_T, pwritev64, int fd, __sanitizer_iovec *iov, int iovcnt,
1224 OFF64_T offset) {
1225 void *ctx;
1226 COMMON_INTERCEPTOR_ENTER(ctx, pwritev64, fd, iov, iovcnt, offset);
1227 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1228 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1229 SSIZE_T res =
1230 COMMON_INTERCEPTOR_BLOCK_REAL(pwritev64)(fd, iov, iovcnt, offset);
1231 if (res > 0) read_iovec(ctx, iov, iovcnt, res);
1232 return res;
1233}
1234#define INIT_PWRITEV64 COMMON_INTERCEPT_FUNCTION(pwritev64)
1235#else
1236#define INIT_PWRITEV64
1237#endif
1238
1239#if SANITIZER_INTERCEPT_FGETS
1240INTERCEPTOR(char *, fgets, char *s, SIZE_T size, void *file) {
1241 // libc file streams can call user-supplied functions, see fopencookie.
1242 void *ctx;
1243 COMMON_INTERCEPTOR_ENTER(ctx, fgets, s, size, file);
1244 // FIXME: under ASan the call below may write to freed memory and corrupt
1245 // its metadata. See
1246 // https://github.com/google/sanitizers/issues/321.
1247 char *res = REAL(fgets)(s, size, file);
1248 if (res)
1249 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1);
1250 return res;
1251}
1252#define INIT_FGETS COMMON_INTERCEPT_FUNCTION(fgets)
1253#else
1254#define INIT_FGETS
1255#endif
1256
1257#if SANITIZER_INTERCEPT_FPUTS
1258INTERCEPTOR_WITH_SUFFIX(int, fputs, char *s, void *file) {
1259 // libc file streams can call user-supplied functions, see fopencookie.
1260 void *ctx;
1261 COMMON_INTERCEPTOR_ENTER(ctx, fputs, s, file);
1262 if (!SANITIZER_APPLE || s) { // `fputs(NULL, file)` is supported on Darwin.
1263 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1);
1264 }
1265 return REAL(fputs)(s, file);
1266}
1267#define INIT_FPUTS COMMON_INTERCEPT_FUNCTION(fputs)
1268#else
1269#define INIT_FPUTS
1270#endif
1271
1272#if SANITIZER_INTERCEPT_PUTS
1273INTERCEPTOR(int, puts, char *s) {
1274 // libc file streams can call user-supplied functions, see fopencookie.
1275 void *ctx;
1276 COMMON_INTERCEPTOR_ENTER(ctx, puts, s);
1277 if (!SANITIZER_APPLE || s) { // `puts(NULL)` is supported on Darwin.
1278 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1);
1279 }
1280 return REAL(puts)(s);
1281}
1282#define INIT_PUTS COMMON_INTERCEPT_FUNCTION(puts)
1283#else
1284#define INIT_PUTS
1285#endif
1286
1287#if SANITIZER_INTERCEPT_PRCTL
1288INTERCEPTOR(int, prctl, int option, unsigned long arg2, unsigned long arg3,
1289 unsigned long arg4, unsigned long arg5) {
1290 void *ctx;
1291 COMMON_INTERCEPTOR_ENTER(ctx, prctl, option, arg2, arg3, arg4, arg5);
1292 static const int PR_SET_NAME = 15;
1293 static const int PR_GET_NAME = 16;
1294 static const int PR_SET_VMA = 0x53564d41;
1295 static const int PR_SCHED_CORE = 62;
1296 static const int PR_SCHED_CORE_GET = 0;
1297 static const int PR_GET_PDEATHSIG = 2;
1298
1299# if !SANITIZER_ANDROID
1300 static const int PR_SET_SECCOMP = 22;
1301 static const int SECCOMP_MODE_FILTER = 2;
1302# endif
1303 if (option == PR_SET_VMA && arg2 == 0UL) {
1304 char *name = (char *)arg5;
1305 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
1306 }
1307 int res = REAL(prctl)(option, arg2, arg3, arg4, arg5);
1308 if (option == PR_SET_NAME) {
1309 char buff[16];
1310 internal_strncpy(buff, (char *)arg2, 15);
1311 buff[15] = 0;
1312 COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, buff);
1313 } else if (res == 0 && option == PR_GET_NAME) {
1314 char *name = (char *)arg2;
1315 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
1316 } else if (res != -1 && option == PR_SCHED_CORE &&
1317 arg2 == PR_SCHED_CORE_GET) {
1318 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (u64 *)(arg5), sizeof(u64));
1319 } else if (res != -1 && option == PR_GET_PDEATHSIG) {
1320 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (u64 *)(arg2), sizeof(int));
1321# if SANITIZER_GLIBC
1322 } else if (res != -1 && option == PR_SET_SECCOMP &&
1323 arg2 == SECCOMP_MODE_FILTER) {
1324 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (u64 *)(arg3), struct_sock_fprog_sz);
1325# endif
1326 }
1327 return res;
1328}
1329#define INIT_PRCTL COMMON_INTERCEPT_FUNCTION(prctl)
1330#else
1331#define INIT_PRCTL
1332#endif // SANITIZER_INTERCEPT_PRCTL
1333
1334#if SANITIZER_INTERCEPT_TIME
1335INTERCEPTOR(unsigned long, time, unsigned long *t) {
1336 void *ctx;
1337 COMMON_INTERCEPTOR_ENTER(ctx, time, t);
1338 unsigned long local_t;
1339 unsigned long res = REAL(time)(&local_t);
1340 if (t && res != (unsigned long)-1) {
1341 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, t, sizeof(*t));
1342 *t = local_t;
1343 }
1344 return res;
1345}
1346#define INIT_TIME COMMON_INTERCEPT_FUNCTION(time);
1347#else
1348#define INIT_TIME
1349#endif // SANITIZER_INTERCEPT_TIME
1350
1351#if SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
1352static void unpoison_tm(void *ctx, __sanitizer_tm *tm) {
1353 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm));
1354// AIX tm struct does not have tm_zone field.
1355# if !SANITIZER_SOLARIS && !SANITIZER_AIX
1356 if (tm->tm_zone) {
1357 // Can not use COMMON_INTERCEPTOR_WRITE_RANGE here, because tm->tm_zone
1358 // can point to shared memory and tsan would report a data race.
1359 COMMON_INTERCEPTOR_INITIALIZE_RANGE(tm->tm_zone,
1360 internal_strlen(tm->tm_zone) + 1);
1361 }
1362#endif
1363}
1364INTERCEPTOR(__sanitizer_tm *, localtime, unsigned long *timep) {
1365 void *ctx;
1366 COMMON_INTERCEPTOR_ENTER(ctx, localtime, timep);
1367 __sanitizer_tm *res = REAL(localtime)(timep);
1368 if (res) {
1369 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1370 unpoison_tm(ctx, res);
1371 }
1372 return res;
1373}
1374INTERCEPTOR(__sanitizer_tm *, localtime_r, unsigned long *timep, void *result) {
1375 void *ctx;
1376 COMMON_INTERCEPTOR_ENTER(ctx, localtime_r, timep, result);
1377 __sanitizer_tm *res = REAL(localtime_r)(timep, result);
1378 if (res) {
1379 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1380 unpoison_tm(ctx, res);
1381 }
1382 return res;
1383}
1384INTERCEPTOR(__sanitizer_tm *, gmtime, unsigned long *timep) {
1385 void *ctx;
1386 COMMON_INTERCEPTOR_ENTER(ctx, gmtime, timep);
1387 __sanitizer_tm *res = REAL(gmtime)(timep);
1388 if (res) {
1389 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1390 unpoison_tm(ctx, res);
1391 }
1392 return res;
1393}
1394INTERCEPTOR(__sanitizer_tm *, gmtime_r, unsigned long *timep, void *result) {
1395 void *ctx;
1396 COMMON_INTERCEPTOR_ENTER(ctx, gmtime_r, timep, result);
1397 __sanitizer_tm *res = REAL(gmtime_r)(timep, result);
1398 if (res) {
1399 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1400 unpoison_tm(ctx, res);
1401 }
1402 return res;
1403}
1404INTERCEPTOR(char *, ctime, unsigned long *timep) {
1405 void *ctx;
1406 COMMON_INTERCEPTOR_ENTER(ctx, ctime, timep);
1407 // FIXME: under ASan the call below may write to freed memory and corrupt
1408 // its metadata. See
1409 // https://github.com/google/sanitizers/issues/321.
1410 char *res = REAL(ctime)(timep);
1411 if (res) {
1412 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1413 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
1414 }
1415 return res;
1416}
1417INTERCEPTOR(char *, ctime_r, unsigned long *timep, char *result) {
1418 void *ctx;
1419 COMMON_INTERCEPTOR_ENTER(ctx, ctime_r, timep, result);
1420 // FIXME: under ASan the call below may write to freed memory and corrupt
1421 // its metadata. See
1422 // https://github.com/google/sanitizers/issues/321.
1423 char *res = REAL(ctime_r)(timep, result);
1424 if (res) {
1425 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1426 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
1427 }
1428 return res;
1429}
1430INTERCEPTOR(char *, asctime, __sanitizer_tm *tm) {
1431 void *ctx;
1432 COMMON_INTERCEPTOR_ENTER(ctx, asctime, tm);
1433 // FIXME: under ASan the call below may write to freed memory and corrupt
1434 // its metadata. See
1435 // https://github.com/google/sanitizers/issues/321.
1436 char *res = REAL(asctime)(tm);
1437 if (res) {
1438 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm));
1439 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
1440 }
1441 return res;
1442}
1443INTERCEPTOR(char *, asctime_r, __sanitizer_tm *tm, char *result) {
1444 void *ctx;
1445 COMMON_INTERCEPTOR_ENTER(ctx, asctime_r, tm, result);
1446 // FIXME: under ASan the call below may write to freed memory and corrupt
1447 // its metadata. See
1448 // https://github.com/google/sanitizers/issues/321.
1449 char *res = REAL(asctime_r)(tm, result);
1450 if (res) {
1451 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm));
1452 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
1453 }
1454 return res;
1455}
1456INTERCEPTOR(long, mktime, __sanitizer_tm *tm) {
1457 void *ctx;
1458 COMMON_INTERCEPTOR_ENTER(ctx, mktime, tm);
1459 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_sec, sizeof(tm->tm_sec));
1460 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_min, sizeof(tm->tm_min));
1461 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_hour, sizeof(tm->tm_hour));
1462 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mday, sizeof(tm->tm_mday));
1463 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mon, sizeof(tm->tm_mon));
1464 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_year, sizeof(tm->tm_year));
1465 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_isdst, sizeof(tm->tm_isdst));
1466 long res = REAL(mktime)(tm);
1467 if (res != -1) unpoison_tm(ctx, tm);
1468 return res;
1469}
1470#define INIT_LOCALTIME_AND_FRIENDS \
1471 COMMON_INTERCEPT_FUNCTION(localtime); \
1472 COMMON_INTERCEPT_FUNCTION(localtime_r); \
1473 COMMON_INTERCEPT_FUNCTION(gmtime); \
1474 COMMON_INTERCEPT_FUNCTION(gmtime_r); \
1475 COMMON_INTERCEPT_FUNCTION(ctime); \
1476 COMMON_INTERCEPT_FUNCTION(ctime_r); \
1477 COMMON_INTERCEPT_FUNCTION(asctime); \
1478 COMMON_INTERCEPT_FUNCTION(asctime_r); \
1479 COMMON_INTERCEPT_FUNCTION(mktime);
1480#else
1481#define INIT_LOCALTIME_AND_FRIENDS
1482#endif // SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
1483
1484#if SANITIZER_INTERCEPT_STRPTIME
1485INTERCEPTOR(char *, strptime, char *s, char *format, __sanitizer_tm *tm) {
1486 void *ctx;
1487 COMMON_INTERCEPTOR_ENTER(ctx, strptime, s, format, tm);
1488 if (format)
1489 COMMON_INTERCEPTOR_READ_RANGE(ctx, format, internal_strlen(format) + 1);
1490 // FIXME: under ASan the call below may write to freed memory and corrupt
1491 // its metadata. See
1492 // https://github.com/google/sanitizers/issues/321.
1493 char *res = REAL(strptime)(s, format, tm);
1494 COMMON_INTERCEPTOR_READ_STRING(ctx, s, res ? res - s : 0);
1495 if (res && tm) {
1496 // Do not call unpoison_tm here, because strptime does not, in fact,
1497 // initialize the entire struct tm. For example, tm_zone pointer is left
1498 // uninitialized.
1499 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm));
1500 }
1501 return res;
1502}
1503#define INIT_STRPTIME COMMON_INTERCEPT_FUNCTION(strptime);
1504#else
1505#define INIT_STRPTIME
1506#endif
1507
1508#if SANITIZER_INTERCEPT_SCANF || SANITIZER_INTERCEPT_PRINTF
1509#include "sanitizer_common_interceptors_format.inc"
1510
1511#define FORMAT_INTERCEPTOR_IMPL(name, vname, ...) \
1512 { \
1513 void *ctx; \
1514 va_list ap; \
1515 va_start(ap, format); \
1516 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__, ap); \
1517 int res = WRAP(vname)(__VA_ARGS__, ap); \
1518 va_end(ap); \
1519 return res; \
1520 }
1521
1522#endif
1523
1524#if SANITIZER_INTERCEPT_SCANF
1525
1526#define VSCANF_INTERCEPTOR_IMPL(vname, allowGnuMalloc, ...) \
1527 { \
1528 void *ctx; \
1529 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \
1530 va_list aq; \
1531 va_copy(aq, ap); \
1532 int res = REAL(vname)(__VA_ARGS__); \
1533 if (res > 0) \
1534 scanf_common(ctx, res, allowGnuMalloc, format, aq); \
1535 va_end(aq); \
1536 return res; \
1537 }
1538
1539INTERCEPTOR(int, vscanf, const char *format, va_list ap)
1540VSCANF_INTERCEPTOR_IMPL(vscanf, true, format, ap)
1541
1542INTERCEPTOR(int, vsscanf, const char *str, const char *format, va_list ap)
1543VSCANF_INTERCEPTOR_IMPL(vsscanf, true, str, format, ap)
1544
1545INTERCEPTOR(int, vfscanf, void *stream, const char *format, va_list ap)
1546VSCANF_INTERCEPTOR_IMPL(vfscanf, true, stream, format, ap)
1547
1548#if SANITIZER_INTERCEPT_ISOC99_SCANF
1549INTERCEPTOR(int, __isoc99_vscanf, const char *format, va_list ap)
1550VSCANF_INTERCEPTOR_IMPL(__isoc99_vscanf, false, format, ap)
1551
1552INTERCEPTOR(int, __isoc99_vsscanf, const char *str, const char *format,
1553 va_list ap)
1554VSCANF_INTERCEPTOR_IMPL(__isoc99_vsscanf, false, str, format, ap)
1555
1556INTERCEPTOR(int, __isoc99_vfscanf, void *stream, const char *format, va_list ap)
1557VSCANF_INTERCEPTOR_IMPL(__isoc99_vfscanf, false, stream, format, ap)
1558
1559INTERCEPTOR(int, __isoc23_vscanf, const char *format, va_list ap)
1560VSCANF_INTERCEPTOR_IMPL(__isoc23_vscanf, false, format, ap)
1561
1562INTERCEPTOR(int, __isoc23_vsscanf, const char *str, const char *format,
1563 va_list ap)
1564VSCANF_INTERCEPTOR_IMPL(__isoc23_vsscanf, false, str, format, ap)
1565
1566INTERCEPTOR(int, __isoc23_vfscanf, void *stream, const char *format, va_list ap)
1567VSCANF_INTERCEPTOR_IMPL(__isoc23_vfscanf, false, stream, format, ap)
1568#endif // SANITIZER_INTERCEPT_ISOC99_SCANF
1569
1570INTERCEPTOR(int, scanf, const char *format, ...)
1571FORMAT_INTERCEPTOR_IMPL(scanf, vscanf, format)
1572
1573INTERCEPTOR(int, fscanf, void *stream, const char *format, ...)
1574FORMAT_INTERCEPTOR_IMPL(fscanf, vfscanf, stream, format)
1575
1576INTERCEPTOR(int, sscanf, const char *str, const char *format, ...)
1577FORMAT_INTERCEPTOR_IMPL(sscanf, vsscanf, str, format)
1578
1579#if SANITIZER_INTERCEPT_ISOC99_SCANF
1580INTERCEPTOR(int, __isoc99_scanf, const char *format, ...)
1581FORMAT_INTERCEPTOR_IMPL(__isoc99_scanf, __isoc99_vscanf, format)
1582
1583INTERCEPTOR(int, __isoc99_fscanf, void *stream, const char *format, ...)
1584FORMAT_INTERCEPTOR_IMPL(__isoc99_fscanf, __isoc99_vfscanf, stream, format)
1585
1586INTERCEPTOR(int, __isoc99_sscanf, const char *str, const char *format, ...)
1587FORMAT_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format)
1588
1589INTERCEPTOR(int, __isoc23_scanf, const char *format, ...)
1590FORMAT_INTERCEPTOR_IMPL(__isoc23_scanf, __isoc23_vscanf, format)
1591
1592INTERCEPTOR(int, __isoc23_fscanf, void *stream, const char *format, ...)
1593FORMAT_INTERCEPTOR_IMPL(__isoc23_fscanf, __isoc23_vfscanf, stream, format)
1594
1595INTERCEPTOR(int, __isoc23_sscanf, const char *str, const char *format, ...)
1596FORMAT_INTERCEPTOR_IMPL(__isoc23_sscanf, __isoc23_vsscanf, str, format)
1597#endif
1598
1599#endif
1600
1601#if SANITIZER_INTERCEPT_SCANF
1602#define INIT_SCANF \
1603 COMMON_INTERCEPT_FUNCTION_LDBL(scanf); \
1604 COMMON_INTERCEPT_FUNCTION_LDBL(sscanf); \
1605 COMMON_INTERCEPT_FUNCTION_LDBL(fscanf); \
1606 COMMON_INTERCEPT_FUNCTION_LDBL(vscanf); \
1607 COMMON_INTERCEPT_FUNCTION_LDBL(vsscanf); \
1608 COMMON_INTERCEPT_FUNCTION_LDBL(vfscanf);
1609#else
1610#define INIT_SCANF
1611#endif
1612
1613#if SANITIZER_INTERCEPT_ISOC99_SCANF
1614#define INIT_ISOC99_SCANF \
1615 COMMON_INTERCEPT_FUNCTION(__isoc99_scanf); \
1616 COMMON_INTERCEPT_FUNCTION(__isoc99_sscanf); \
1617 COMMON_INTERCEPT_FUNCTION(__isoc99_fscanf); \
1618 COMMON_INTERCEPT_FUNCTION(__isoc99_vscanf); \
1619 COMMON_INTERCEPT_FUNCTION(__isoc99_vsscanf); \
1620 COMMON_INTERCEPT_FUNCTION(__isoc99_vfscanf); \
1621 COMMON_INTERCEPT_FUNCTION(__isoc23_scanf); \
1622 COMMON_INTERCEPT_FUNCTION(__isoc23_sscanf); \
1623 COMMON_INTERCEPT_FUNCTION(__isoc23_fscanf); \
1624 COMMON_INTERCEPT_FUNCTION(__isoc23_vscanf); \
1625 COMMON_INTERCEPT_FUNCTION(__isoc23_vsscanf); \
1626 COMMON_INTERCEPT_FUNCTION(__isoc23_vfscanf);
1627#else
1628#define INIT_ISOC99_SCANF
1629#endif
1630
1631#if SANITIZER_INTERCEPT_PRINTF
1632
1633#define VPRINTF_INTERCEPTOR_ENTER(vname, ...) \
1634 void *ctx; \
1635 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \
1636 va_list aq; \
1637 va_copy(aq, ap);
1638
1639#define VPRINTF_INTERCEPTOR_RETURN() \
1640 va_end(aq);
1641
1642#define VPRINTF_INTERCEPTOR_IMPL(vname, ...) \
1643 { \
1644 VPRINTF_INTERCEPTOR_ENTER(vname, __VA_ARGS__); \
1645 if (common_flags()->check_printf) \
1646 printf_common(ctx, format, aq); \
1647 int res = REAL(vname)(__VA_ARGS__); \
1648 VPRINTF_INTERCEPTOR_RETURN(); \
1649 return res; \
1650 }
1651
1652// FIXME: under ASan the REAL() call below may write to freed memory and
1653// corrupt its metadata. See
1654// https://github.com/google/sanitizers/issues/321.
1655#define VSPRINTF_INTERCEPTOR_IMPL(vname, str, ...) \
1656 { \
1657 VPRINTF_INTERCEPTOR_ENTER(vname, str, __VA_ARGS__) \
1658 if (common_flags()->check_printf) { \
1659 printf_common(ctx, format, aq); \
1660 } \
1661 int res = REAL(vname)(str, __VA_ARGS__); \
1662 if (res >= 0) { \
1663 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, res + 1); \
1664 } \
1665 VPRINTF_INTERCEPTOR_RETURN(); \
1666 return res; \
1667 }
1668
1669// FIXME: under ASan the REAL() call below may write to freed memory and
1670// corrupt its metadata. See
1671// https://github.com/google/sanitizers/issues/321.
1672#define VSNPRINTF_INTERCEPTOR_IMPL(vname, str, size, ...) \
1673 { \
1674 VPRINTF_INTERCEPTOR_ENTER(vname, str, size, __VA_ARGS__) \
1675 if (common_flags()->check_printf) { \
1676 printf_common(ctx, format, aq); \
1677 } \
1678 int res = REAL(vname)(str, size, __VA_ARGS__); \
1679 if (res >= 0) { \
1680 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, Min(size, (SIZE_T)(res + 1))); \
1681 } \
1682 VPRINTF_INTERCEPTOR_RETURN(); \
1683 return res; \
1684 }
1685
1686// FIXME: under ASan the REAL() call below may write to freed memory and
1687// corrupt its metadata. See
1688// https://github.com/google/sanitizers/issues/321.
1689#define VASPRINTF_INTERCEPTOR_IMPL(vname, strp, ...) \
1690 { \
1691 VPRINTF_INTERCEPTOR_ENTER(vname, strp, __VA_ARGS__) \
1692 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, strp, sizeof(char *)); \
1693 if (common_flags()->check_printf) { \
1694 printf_common(ctx, format, aq); \
1695 } \
1696 int res = REAL(vname)(strp, __VA_ARGS__); \
1697 if (res >= 0) { \
1698 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *strp, res + 1); \
1699 } \
1700 VPRINTF_INTERCEPTOR_RETURN(); \
1701 return res; \
1702 }
1703
1704INTERCEPTOR(int, vprintf, const char *format, va_list ap)
1705VPRINTF_INTERCEPTOR_IMPL(vprintf, format, ap)
1706
1707INTERCEPTOR(int, vfprintf, __sanitizer_FILE *stream, const char *format,
1708 va_list ap)
1709VPRINTF_INTERCEPTOR_IMPL(vfprintf, stream, format, ap)
1710
1711INTERCEPTOR(int, vsnprintf, char *str, SIZE_T size, const char *format,
1712 va_list ap)
1713VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap)
1714
1715#if SANITIZER_INTERCEPT___PRINTF_CHK
1716INTERCEPTOR(int, __vsnprintf_chk, char *str, SIZE_T size, int flag,
1717 SIZE_T size_to, const char *format, va_list ap)
1718VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap)
1719#endif
1720
1721#if SANITIZER_INTERCEPT_PRINTF_L
1722INTERCEPTOR(int, vsnprintf_l, char *str, SIZE_T size, void *loc,
1723 const char *format, va_list ap)
1724VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf_l, str, size, loc, format, ap)
1725
1726INTERCEPTOR(int, snprintf_l, char *str, SIZE_T size, void *loc,
1727 const char *format, ...)
1728FORMAT_INTERCEPTOR_IMPL(snprintf_l, vsnprintf_l, str, size, loc, format)
1729#endif // SANITIZER_INTERCEPT_PRINTF_L
1730
1731INTERCEPTOR(int, vsprintf, char *str, const char *format, va_list ap)
1732VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap)
1733
1734#if SANITIZER_INTERCEPT___PRINTF_CHK
1735INTERCEPTOR(int, __vsprintf_chk, char *str, int flag, SIZE_T size_to,
1736 const char *format, va_list ap)
1737VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap)
1738#endif
1739
1740# if SANITIZER_INTERCEPT_VASPRINTF
1741INTERCEPTOR(int, vasprintf, char **strp, const char *format, va_list ap)
1742VASPRINTF_INTERCEPTOR_IMPL(vasprintf, strp, format, ap)
1743# endif
1744
1745# if SANITIZER_INTERCEPT_ISOC99_PRINTF
1746INTERCEPTOR(int, __isoc99_vprintf, const char *format, va_list ap)
1747VPRINTF_INTERCEPTOR_IMPL(__isoc99_vprintf, format, ap)
1748
1749INTERCEPTOR(int, __isoc99_vfprintf, __sanitizer_FILE *stream,
1750 const char *format, va_list ap)
1751VPRINTF_INTERCEPTOR_IMPL(__isoc99_vfprintf, stream, format, ap)
1752
1753INTERCEPTOR(int, __isoc99_vsnprintf, char *str, SIZE_T size, const char *format,
1754 va_list ap)
1755VSNPRINTF_INTERCEPTOR_IMPL(__isoc99_vsnprintf, str, size, format, ap)
1756
1757INTERCEPTOR(int, __isoc99_vsprintf, char *str, const char *format,
1758 va_list ap)
1759VSPRINTF_INTERCEPTOR_IMPL(__isoc99_vsprintf, str, format,
1760 ap)
1761
1762#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF
1763
1764INTERCEPTOR(int, printf, const char *format, ...)
1765FORMAT_INTERCEPTOR_IMPL(printf, vprintf, format)
1766
1767INTERCEPTOR(int, fprintf, __sanitizer_FILE *stream, const char *format, ...)
1768FORMAT_INTERCEPTOR_IMPL(fprintf, vfprintf, stream, format)
1769
1770#if SANITIZER_INTERCEPT___PRINTF_CHK
1771INTERCEPTOR(int, __fprintf_chk, __sanitizer_FILE *stream, SIZE_T size,
1772 const char *format, ...)
1773FORMAT_INTERCEPTOR_IMPL(__fprintf_chk, vfprintf, stream, format)
1774#endif
1775
1776INTERCEPTOR(int, sprintf, char *str, const char *format, ...)
1777FORMAT_INTERCEPTOR_IMPL(sprintf, vsprintf, str, format)
1778
1779#if SANITIZER_INTERCEPT___PRINTF_CHK
1780INTERCEPTOR(int, __sprintf_chk, char *str, int flag, SIZE_T size_to,
1781 const char *format, ...)
1782FORMAT_INTERCEPTOR_IMPL(__sprintf_chk, vsprintf, str, format)
1783#endif
1784
1785INTERCEPTOR(int, snprintf, char *str, SIZE_T size, const char *format, ...)
1786FORMAT_INTERCEPTOR_IMPL(snprintf, vsnprintf, str, size, format)
1787
1788#if SANITIZER_INTERCEPT___PRINTF_CHK
1789INTERCEPTOR(int, __snprintf_chk, char *str, SIZE_T size, int flag,
1790 SIZE_T size_to, const char *format, ...)
1791FORMAT_INTERCEPTOR_IMPL(__snprintf_chk, vsnprintf, str, size, format)
1792#endif
1793
1794# if SANITIZER_INTERCEPT_ASPRINTF
1795INTERCEPTOR(int, asprintf, char **strp, const char *format, ...)
1796FORMAT_INTERCEPTOR_IMPL(asprintf, vasprintf, strp, format)
1797# endif
1798
1799# if SANITIZER_INTERCEPT_ISOC99_PRINTF
1800INTERCEPTOR(int, __isoc99_printf, const char *format, ...)
1801FORMAT_INTERCEPTOR_IMPL(__isoc99_printf, __isoc99_vprintf, format)
1802
1803INTERCEPTOR(int, __isoc99_fprintf, __sanitizer_FILE *stream, const char *format,
1804 ...)
1805FORMAT_INTERCEPTOR_IMPL(__isoc99_fprintf, __isoc99_vfprintf, stream, format)
1806
1807INTERCEPTOR(int, __isoc99_sprintf, char *str, const char *format, ...)
1808FORMAT_INTERCEPTOR_IMPL(__isoc99_sprintf, __isoc99_vsprintf, str, format)
1809
1810INTERCEPTOR(int, __isoc99_snprintf, char *str, SIZE_T size,
1811 const char *format, ...)
1812FORMAT_INTERCEPTOR_IMPL(__isoc99_snprintf, __isoc99_vsnprintf, str, size,
1813 format)
1814
1815#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF
1816
1817#endif // SANITIZER_INTERCEPT_PRINTF
1818
1819#if SANITIZER_INTERCEPT_PRINTF
1820# define INIT_PRINTF_COMMON \
1821 COMMON_INTERCEPT_FUNCTION_LDBL(printf); \
1822 COMMON_INTERCEPT_FUNCTION_LDBL(sprintf); \
1823 COMMON_INTERCEPT_FUNCTION_LDBL(snprintf); \
1824 COMMON_INTERCEPT_FUNCTION_LDBL(fprintf); \
1825 COMMON_INTERCEPT_FUNCTION_LDBL(vprintf); \
1826 COMMON_INTERCEPT_FUNCTION_LDBL(vsprintf); \
1827 COMMON_INTERCEPT_FUNCTION_LDBL(vsnprintf); \
1828 COMMON_INTERCEPT_FUNCTION_LDBL(vfprintf);
1829# if !SANITIZER_AIX
1830// AIX does not have [v]asprintf.
1831# define INIT_PRINTF_EXTRA \
1832 COMMON_INTERCEPT_FUNCTION_LDBL(asprintf); \
1833 COMMON_INTERCEPT_FUNCTION_LDBL(vasprintf);
1834# else
1835# define INIT_PRINTF_EXTRA
1836# endif
1837# define INIT_PRINTF INIT_PRINTF_COMMON INIT_PRINTF_EXTRA
1838#else
1839#define INIT_PRINTF
1840#endif
1841
1842#if SANITIZER_INTERCEPT___PRINTF_CHK
1843#define INIT___PRINTF_CHK \
1844 COMMON_INTERCEPT_FUNCTION(__sprintf_chk); \
1845 COMMON_INTERCEPT_FUNCTION(__snprintf_chk); \
1846 COMMON_INTERCEPT_FUNCTION(__vsprintf_chk); \
1847 COMMON_INTERCEPT_FUNCTION(__vsnprintf_chk); \
1848 COMMON_INTERCEPT_FUNCTION(__fprintf_chk);
1849#else
1850#define INIT___PRINTF_CHK
1851#endif
1852
1853#if SANITIZER_INTERCEPT_PRINTF_L
1854#define INIT_PRINTF_L \
1855 COMMON_INTERCEPT_FUNCTION(snprintf_l); \
1856 COMMON_INTERCEPT_FUNCTION(vsnprintf_l);
1857#else
1858#define INIT_PRINTF_L
1859#endif
1860
1861#if SANITIZER_INTERCEPT_ISOC99_PRINTF
1862#define INIT_ISOC99_PRINTF \
1863 COMMON_INTERCEPT_FUNCTION(__isoc99_printf); \
1864 COMMON_INTERCEPT_FUNCTION(__isoc99_sprintf); \
1865 COMMON_INTERCEPT_FUNCTION(__isoc99_snprintf); \
1866 COMMON_INTERCEPT_FUNCTION(__isoc99_fprintf); \
1867 COMMON_INTERCEPT_FUNCTION(__isoc99_vprintf); \
1868 COMMON_INTERCEPT_FUNCTION(__isoc99_vsprintf); \
1869 COMMON_INTERCEPT_FUNCTION(__isoc99_vsnprintf); \
1870 COMMON_INTERCEPT_FUNCTION(__isoc99_vfprintf);
1871#else
1872#define INIT_ISOC99_PRINTF
1873#endif
1874
1875#if SANITIZER_INTERCEPT_SETPROCTITLE
1876INTERCEPTOR(void, setproctitle, const char *fmt, ...) {
1877 void *ctx;
1878 va_list ap;
1879 va_start(ap, fmt);
1880 COMMON_INTERCEPTOR_ENTER(ctx, setproctitle, fmt, ap);
1881 if (common_flags()->check_printf)
1882 printf_common(ctx, fmt, ap);
1883 REAL(setproctitle)(fmt, ap);
1884 va_end(ap);
1885}
1886# define INIT_SETPROCTITLE COMMON_INTERCEPT_FUNCTION(setproctitle);
1887#else
1888# define INIT_SETPROCTITLE
1889#endif
1890
1891#if SANITIZER_INTERCEPT_IOCTL
1892#include "sanitizer_common_interceptors_ioctl.inc"
1893#include "sanitizer_interceptors_ioctl_netbsd.inc"
1894INTERCEPTOR(int, ioctl, int d, unsigned long request, ...) {
1895 // We need a frame pointer, because we call into ioctl_common_[pre|post] which
1896 // can trigger a report and we need to be able to unwind through this
1897 // function. On Mac in debug mode we might not have a frame pointer, because
1898 // ioctl_common_[pre|post] doesn't get inlined here.
1899 ENABLE_FRAME_POINTER;
1900
1901 void *ctx;
1902 va_list ap;
1903 va_start(ap, request);
1904 void *arg = va_arg(ap, void *);
1905 va_end(ap);
1906 COMMON_INTERCEPTOR_ENTER(ctx, ioctl, d, request, arg);
1907
1908 CHECK(ioctl_initialized);
1909
1910 // Note: TSan does not use common flags, and they are zero-initialized.
1911 // This effectively disables ioctl handling in TSan.
1912 if (!common_flags()->handle_ioctl) return REAL(ioctl)(d, request, arg);
1913
1914 // Although request is unsigned long, the rest of the interceptor uses it
1915 // as just "unsigned" to save space, because we know that all values fit in
1916 // "unsigned" - they are compile-time constants.
1917
1918 const ioctl_desc *desc = ioctl_lookup(request);
1919 ioctl_desc decoded_desc;
1920 if (!desc) {
1921 VPrintf(2, "Decoding unknown ioctl 0x%lx\n", request);
1922 if (!ioctl_decode(request, &decoded_desc))
1923 Printf("WARNING: failed decoding unknown ioctl 0x%lx\n", request);
1924 else
1925 desc = &decoded_desc;
1926 }
1927
1928 if (desc) ioctl_common_pre(ctx, desc, d, request, arg);
1929 int res = REAL(ioctl)(d, request, arg);
1930 // FIXME: some ioctls have different return values for success and failure.
1931 if (desc && res != -1) ioctl_common_post(ctx, desc, res, d, request, arg);
1932 return res;
1933}
1934#define INIT_IOCTL \
1935 ioctl_init(); \
1936 COMMON_INTERCEPT_FUNCTION(ioctl);
1937#else
1938#define INIT_IOCTL
1939#endif
1940
1941#if SANITIZER_POSIX
1942UNUSED static void unpoison_passwd(void *ctx, __sanitizer_passwd *pwd) {
1943 if (pwd) {
1944 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, sizeof(*pwd));
1945 if (pwd->pw_name)
1946 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_name,
1947 internal_strlen(pwd->pw_name) + 1);
1948 if (pwd->pw_passwd)
1949 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_passwd,
1950 internal_strlen(pwd->pw_passwd) + 1);
1951#if !SANITIZER_ANDROID
1952 if (pwd->pw_gecos)
1953 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_gecos,
1954 internal_strlen(pwd->pw_gecos) + 1);
1955#endif
1956#if SANITIZER_APPLE || SANITIZER_FREEBSD || SANITIZER_NETBSD
1957 if (pwd->pw_class)
1958 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_class,
1959 internal_strlen(pwd->pw_class) + 1);
1960#endif
1961 if (pwd->pw_dir)
1962 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_dir,
1963 internal_strlen(pwd->pw_dir) + 1);
1964 if (pwd->pw_shell)
1965 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_shell,
1966 internal_strlen(pwd->pw_shell) + 1);
1967 }
1968}
1969
1970UNUSED static void unpoison_group(void *ctx, __sanitizer_group *grp) {
1971 if (grp) {
1972 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, sizeof(*grp));
1973 if (grp->gr_name)
1974 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_name,
1975 internal_strlen(grp->gr_name) + 1);
1976 if (grp->gr_passwd)
1977 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_passwd,
1978 internal_strlen(grp->gr_passwd) + 1);
1979 char **p = grp->gr_mem;
1980 for (; *p; ++p) {
1981 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1);
1982 }
1983 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_mem,
1984 (p - grp->gr_mem + 1) * sizeof(*p));
1985 }
1986}
1987#endif // SANITIZER_POSIX
1988
1989#if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS
1990INTERCEPTOR(__sanitizer_passwd *, getpwnam, const char *name) {
1991 void *ctx;
1992 COMMON_INTERCEPTOR_ENTER(ctx, getpwnam, name);
1993 if (name)
1994 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
1995 __sanitizer_passwd *res = REAL(getpwnam)(name);
1996 unpoison_passwd(ctx, res);
1997 return res;
1998}
1999INTERCEPTOR(__sanitizer_passwd *, getpwuid, u32 uid) {
2000 void *ctx;
2001 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid, uid);
2002 __sanitizer_passwd *res = REAL(getpwuid)(uid);
2003 unpoison_passwd(ctx, res);
2004 return res;
2005}
2006INTERCEPTOR(__sanitizer_group *, getgrnam, const char *name) {
2007 void *ctx;
2008 COMMON_INTERCEPTOR_ENTER(ctx, getgrnam, name);
2009 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
2010 __sanitizer_group *res = REAL(getgrnam)(name);
2011 unpoison_group(ctx, res);
2012 return res;
2013}
2014INTERCEPTOR(__sanitizer_group *, getgrgid, u32 gid) {
2015 void *ctx;
2016 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid, gid);
2017 __sanitizer_group *res = REAL(getgrgid)(gid);
2018 unpoison_group(ctx, res);
2019 return res;
2020}
2021#define INIT_GETPWNAM_AND_FRIENDS \
2022 COMMON_INTERCEPT_FUNCTION(getpwnam); \
2023 COMMON_INTERCEPT_FUNCTION(getpwuid); \
2024 COMMON_INTERCEPT_FUNCTION(getgrnam); \
2025 COMMON_INTERCEPT_FUNCTION(getgrgid);
2026#else
2027#define INIT_GETPWNAM_AND_FRIENDS
2028#endif
2029
2030#if SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS
2031INTERCEPTOR(int, getpwnam_r, const char *name, __sanitizer_passwd *pwd,
2032 char *buf, SIZE_T buflen, __sanitizer_passwd **result) {
2033 void *ctx;
2034 COMMON_INTERCEPTOR_ENTER(ctx, getpwnam_r, name, pwd, buf, buflen, result);
2035 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
2036 // FIXME: under ASan the call below may write to freed memory and corrupt
2037 // its metadata. See
2038 // https://github.com/google/sanitizers/issues/321.
2039 int res = REAL(getpwnam_r)(name, pwd, buf, buflen, result);
2040 if (!res && result)
2041 unpoison_passwd(ctx, *result);
2042 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2043 return res;
2044}
2045INTERCEPTOR(int, getpwuid_r, u32 uid, __sanitizer_passwd *pwd, char *buf,
2046 SIZE_T buflen, __sanitizer_passwd **result) {
2047 void *ctx;
2048 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid_r, uid, pwd, buf, buflen, result);
2049 // FIXME: under ASan the call below may write to freed memory and corrupt
2050 // its metadata. See
2051 // https://github.com/google/sanitizers/issues/321.
2052 int res = REAL(getpwuid_r)(uid, pwd, buf, buflen, result);
2053 if (!res && result)
2054 unpoison_passwd(ctx, *result);
2055 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2056 return res;
2057}
2058INTERCEPTOR(int, getgrnam_r, const char *name, __sanitizer_group *grp,
2059 char *buf, SIZE_T buflen, __sanitizer_group **result) {
2060 void *ctx;
2061 COMMON_INTERCEPTOR_ENTER(ctx, getgrnam_r, name, grp, buf, buflen, result);
2062 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
2063 // FIXME: under ASan the call below may write to freed memory and corrupt
2064 // its metadata. See
2065 // https://github.com/google/sanitizers/issues/321.
2066 int res = REAL(getgrnam_r)(name, grp, buf, buflen, result);
2067 if (!res && result)
2068 unpoison_group(ctx, *result);
2069 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2070 return res;
2071}
2072INTERCEPTOR(int, getgrgid_r, u32 gid, __sanitizer_group *grp, char *buf,
2073 SIZE_T buflen, __sanitizer_group **result) {
2074 void *ctx;
2075 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid_r, gid, grp, buf, buflen, result);
2076 // FIXME: under ASan the call below may write to freed memory and corrupt
2077 // its metadata. See
2078 // https://github.com/google/sanitizers/issues/321.
2079 int res = REAL(getgrgid_r)(gid, grp, buf, buflen, result);
2080 if (!res && result)
2081 unpoison_group(ctx, *result);
2082 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2083 return res;
2084}
2085#define INIT_GETPWNAM_R_AND_FRIENDS \
2086 COMMON_INTERCEPT_FUNCTION(getpwnam_r); \
2087 COMMON_INTERCEPT_FUNCTION(getpwuid_r); \
2088 COMMON_INTERCEPT_FUNCTION(getgrnam_r); \
2089 COMMON_INTERCEPT_FUNCTION(getgrgid_r);
2090#else
2091#define INIT_GETPWNAM_R_AND_FRIENDS
2092#endif
2093
2094#if SANITIZER_INTERCEPT_GETPWENT
2095INTERCEPTOR(__sanitizer_passwd *, getpwent, int dummy) {
2096 void *ctx;
2097 COMMON_INTERCEPTOR_ENTER(ctx, getpwent, dummy);
2098 __sanitizer_passwd *res = REAL(getpwent)(dummy);
2099 unpoison_passwd(ctx, res);
2100 return res;
2101}
2102INTERCEPTOR(__sanitizer_group *, getgrent, int dummy) {
2103 void *ctx;
2104 COMMON_INTERCEPTOR_ENTER(ctx, getgrent, dummy);
2105 __sanitizer_group *res = REAL(getgrent)(dummy);
2106 unpoison_group(ctx, res);
2107 return res;
2108}
2109#define INIT_GETPWENT \
2110 COMMON_INTERCEPT_FUNCTION(getpwent); \
2111 COMMON_INTERCEPT_FUNCTION(getgrent);
2112#else
2113#define INIT_GETPWENT
2114#endif
2115
2116#if SANITIZER_INTERCEPT_FGETPWENT
2117INTERCEPTOR(__sanitizer_passwd *, fgetpwent, void *fp) {
2118 void *ctx;
2119 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent, fp);
2120 __sanitizer_passwd *res = REAL(fgetpwent)(fp);
2121 unpoison_passwd(ctx, res);
2122 return res;
2123}
2124INTERCEPTOR(__sanitizer_group *, fgetgrent, void *fp) {
2125 void *ctx;
2126 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent, fp);
2127 __sanitizer_group *res = REAL(fgetgrent)(fp);
2128 unpoison_group(ctx, res);
2129 return res;
2130}
2131#define INIT_FGETPWENT \
2132 COMMON_INTERCEPT_FUNCTION(fgetpwent); \
2133 COMMON_INTERCEPT_FUNCTION(fgetgrent);
2134#else
2135#define INIT_FGETPWENT
2136#endif
2137
2138#if SANITIZER_INTERCEPT_GETPWENT_R
2139INTERCEPTOR(int, getpwent_r, __sanitizer_passwd *pwbuf, char *buf,
2140 SIZE_T buflen, __sanitizer_passwd **pwbufp) {
2141 void *ctx;
2142 COMMON_INTERCEPTOR_ENTER(ctx, getpwent_r, pwbuf, buf, buflen, pwbufp);
2143 // FIXME: under ASan the call below may write to freed memory and corrupt
2144 // its metadata. See
2145 // https://github.com/google/sanitizers/issues/321.
2146 int res = REAL(getpwent_r)(pwbuf, buf, buflen, pwbufp);
2147 if (!res && pwbufp)
2148 unpoison_passwd(ctx, *pwbufp);
2149 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
2150 return res;
2151}
2152INTERCEPTOR(int, getgrent_r, __sanitizer_group *pwbuf, char *buf, SIZE_T buflen,
2153 __sanitizer_group **pwbufp) {
2154 void *ctx;
2155 COMMON_INTERCEPTOR_ENTER(ctx, getgrent_r, pwbuf, buf, buflen, pwbufp);
2156 // FIXME: under ASan the call below may write to freed memory and corrupt
2157 // its metadata. See
2158 // https://github.com/google/sanitizers/issues/321.
2159 int res = REAL(getgrent_r)(pwbuf, buf, buflen, pwbufp);
2160 if (!res && pwbufp)
2161 unpoison_group(ctx, *pwbufp);
2162 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
2163 return res;
2164}
2165#define INIT_GETPWENT_R \
2166 COMMON_INTERCEPT_FUNCTION(getpwent_r); \
2167 COMMON_INTERCEPT_FUNCTION(getgrent_r);
2168#else
2169#define INIT_GETPWENT_R
2170#endif
2171
2172#if SANITIZER_INTERCEPT_FGETPWENT_R
2173INTERCEPTOR(int, fgetpwent_r, void *fp, __sanitizer_passwd *pwbuf, char *buf,
2174 SIZE_T buflen, __sanitizer_passwd **pwbufp) {
2175 void *ctx;
2176 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent_r, fp, pwbuf, buf, buflen, pwbufp);
2177 // FIXME: under ASan the call below may write to freed memory and corrupt
2178 // its metadata. See
2179 // https://github.com/google/sanitizers/issues/321.
2180 int res = REAL(fgetpwent_r)(fp, pwbuf, buf, buflen, pwbufp);
2181 if (!res && pwbufp)
2182 unpoison_passwd(ctx, *pwbufp);
2183 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
2184 return res;
2185}
2186#define INIT_FGETPWENT_R \
2187 COMMON_INTERCEPT_FUNCTION(fgetpwent_r);
2188#else
2189#define INIT_FGETPWENT_R
2190#endif
2191
2192#if SANITIZER_INTERCEPT_FGETGRENT_R
2193INTERCEPTOR(int, fgetgrent_r, void *fp, __sanitizer_group *pwbuf, char *buf,
2194 SIZE_T buflen, __sanitizer_group **pwbufp) {
2195 void *ctx;
2196 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent_r, fp, pwbuf, buf, buflen, pwbufp);
2197 // FIXME: under ASan the call below may write to freed memory and corrupt
2198 // its metadata. See
2199 // https://github.com/google/sanitizers/issues/321.
2200 int res = REAL(fgetgrent_r)(fp, pwbuf, buf, buflen, pwbufp);
2201 if (!res && pwbufp)
2202 unpoison_group(ctx, *pwbufp);
2203 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
2204 return res;
2205}
2206#define INIT_FGETGRENT_R \
2207 COMMON_INTERCEPT_FUNCTION(fgetgrent_r);
2208#else
2209#define INIT_FGETGRENT_R
2210#endif
2211
2212#if SANITIZER_INTERCEPT_SETPWENT
2213// The only thing these interceptors do is disable any nested interceptors.
2214// These functions may open nss modules and call uninstrumented functions from
2215// them, and we don't want things like strlen() to trigger.
2216INTERCEPTOR(void, setpwent, int dummy) {
2217 void *ctx;
2218 COMMON_INTERCEPTOR_ENTER(ctx, setpwent, dummy);
2219 REAL(setpwent)(dummy);
2220}
2221INTERCEPTOR(void, endpwent, int dummy) {
2222 void *ctx;
2223 COMMON_INTERCEPTOR_ENTER(ctx, endpwent, dummy);
2224 REAL(endpwent)(dummy);
2225}
2226INTERCEPTOR(void, setgrent, int dummy) {
2227 void *ctx;
2228 COMMON_INTERCEPTOR_ENTER(ctx, setgrent, dummy);
2229 REAL(setgrent)(dummy);
2230}
2231INTERCEPTOR(void, endgrent, int dummy) {
2232 void *ctx;
2233 COMMON_INTERCEPTOR_ENTER(ctx, endgrent, dummy);
2234 REAL(endgrent)(dummy);
2235}
2236#define INIT_SETPWENT \
2237 COMMON_INTERCEPT_FUNCTION(setpwent); \
2238 COMMON_INTERCEPT_FUNCTION(endpwent); \
2239 COMMON_INTERCEPT_FUNCTION(setgrent); \
2240 COMMON_INTERCEPT_FUNCTION(endgrent);
2241#else
2242#define INIT_SETPWENT
2243#endif
2244
2245#if SANITIZER_INTERCEPT_CLOCK_GETTIME
2246INTERCEPTOR(int, clock_getres, u32 clk_id, void *tp) {
2247 void *ctx;
2248 COMMON_INTERCEPTOR_ENTER(ctx, clock_getres, clk_id, tp);
2249 // FIXME: under ASan the call below may write to freed memory and corrupt
2250 // its metadata. See
2251 // https://github.com/google/sanitizers/issues/321.
2252 int res = REAL(clock_getres)(clk_id, tp);
2253 if (!res && tp) {
2254 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
2255 }
2256 return res;
2257}
2258INTERCEPTOR(int, clock_gettime, u32 clk_id, void *tp) {
2259 void *ctx;
2260 COMMON_INTERCEPTOR_ENTER(ctx, clock_gettime, clk_id, tp);
2261 // FIXME: under ASan the call below may write to freed memory and corrupt
2262 // its metadata. See
2263 // https://github.com/google/sanitizers/issues/321.
2264 int res = REAL(clock_gettime)(clk_id, tp);
2265 if (!res) {
2266 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
2267 }
2268 return res;
2269}
2270#if SANITIZER_GLIBC
2271namespace __sanitizer {
2272extern "C" {
2273int real_clock_gettime(u32 clk_id, void *tp) {
2274 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
2275 return internal_clock_gettime(clk_id, tp);
2276 return REAL(clock_gettime)(clk_id, tp);
2277}
2278} // extern "C"
2279} // namespace __sanitizer
2280#endif
2281INTERCEPTOR(int, clock_settime, u32 clk_id, const void *tp) {
2282 void *ctx;
2283 COMMON_INTERCEPTOR_ENTER(ctx, clock_settime, clk_id, tp);
2284 COMMON_INTERCEPTOR_READ_RANGE(ctx, tp, struct_timespec_sz);
2285 return REAL(clock_settime)(clk_id, tp);
2286}
2287#define INIT_CLOCK_GETTIME \
2288 COMMON_INTERCEPT_FUNCTION(clock_getres); \
2289 COMMON_INTERCEPT_FUNCTION(clock_gettime); \
2290 COMMON_INTERCEPT_FUNCTION(clock_settime);
2291#else
2292#define INIT_CLOCK_GETTIME
2293#endif
2294
2295#if SANITIZER_INTERCEPT_CLOCK_GETCPUCLOCKID
2296INTERCEPTOR(int, clock_getcpuclockid, pid_t pid,
2297 __sanitizer_clockid_t *clockid) {
2298 void *ctx;
2299 COMMON_INTERCEPTOR_ENTER(ctx, clock_getcpuclockid, pid, clockid);
2300 int res = REAL(clock_getcpuclockid)(pid, clockid);
2301 if (!res && clockid) {
2302 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, clockid, sizeof *clockid);
2303 }
2304 return res;
2305}
2306
2307INTERCEPTOR(int, pthread_getcpuclockid, uptr thread,
2308 __sanitizer_clockid_t *clockid) {
2309 void *ctx;
2310 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getcpuclockid, thread, clockid);
2311 int res = REAL(pthread_getcpuclockid)(thread, clockid);
2312 if (!res && clockid) {
2313 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, clockid, sizeof *clockid);
2314 }
2315 return res;
2316}
2317
2318#define INIT_CLOCK_GETCPUCLOCKID \
2319 COMMON_INTERCEPT_FUNCTION(clock_getcpuclockid); \
2320 COMMON_INTERCEPT_FUNCTION(pthread_getcpuclockid);
2321#else
2322#define INIT_CLOCK_GETCPUCLOCKID
2323#endif
2324
2325#if SANITIZER_INTERCEPT_TIMER_CREATE
2326INTERCEPTOR(int, timer_create, __sanitizer_clockid_t clockid, void *sevp,
2327 __sanitizer_timer_t *timer) {
2328 void *ctx;
2329 COMMON_INTERCEPTOR_ENTER(ctx, timer_create, clockid, sevp, timer);
2330 int res = REAL(timer_create)(clockid, sevp, timer);
2331 if (!res && timer) {
2332 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, timer, sizeof *timer);
2333 }
2334 return res;
2335}
2336
2337INTERCEPTOR(int, timer_delete, __sanitizer_timer_t timer) {
2338 void *ctx;
2339 COMMON_INTERCEPTOR_ENTER(ctx, timer_delete, timer);
2340 int res = REAL(timer_delete)(timer);
2341 return res;
2342}
2343
2344INTERCEPTOR(int, timer_gettime, __sanitizer_timer_t timer,
2345 struct __sanitizer_itimerspec *curr_value) {
2346 void *ctx;
2347 COMMON_INTERCEPTOR_ENTER(ctx, timer_gettime, timer, curr_value);
2348 int res = REAL(timer_gettime)(timer, curr_value);
2349 if (!res && curr_value) {
2350 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, sizeof *curr_value);
2351 }
2352 return res;
2353}
2354
2355INTERCEPTOR(int, timer_settime, __sanitizer_timer_t timer, int flags,
2356 const struct __sanitizer_itimerspec *new_value,
2357 struct __sanitizer_itimerspec *old_value) {
2358 void *ctx;
2359 COMMON_INTERCEPTOR_ENTER(ctx, timer_settime, timer, flags, new_value,
2360 old_value);
2361 int res = REAL(timer_settime)(timer, flags, new_value, old_value);
2362 if (!res) {
2363 if (new_value)
2364 COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, sizeof *new_value);
2365 if (old_value)
2366 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, sizeof *old_value);
2367 }
2368 return res;
2369}
2370
2371# define INIT_TIMER_CREATE \
2372 COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(timer_create, "GLIBC_2.3.3"); \
2373 COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(timer_delete, "GLIBC_2.3.3"); \
2374 COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(timer_gettime, "GLIBC_2.3.3"); \
2375 COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(timer_settime, "GLIBC_2.3.3");
2376#else
2377# define INIT_TIMER_CREATE
2378#endif
2379
2380#if SANITIZER_INTERCEPT_GETITIMER
2381INTERCEPTOR(int, getitimer, int which, void *curr_value) {
2382 void *ctx;
2383 COMMON_INTERCEPTOR_ENTER(ctx, getitimer, which, curr_value);
2384 // FIXME: under ASan the call below may write to freed memory and corrupt
2385 // its metadata. See
2386 // https://github.com/google/sanitizers/issues/321.
2387 int res = REAL(getitimer)(which, curr_value);
2388 if (!res && curr_value) {
2389 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerval_sz);
2390 }
2391 return res;
2392}
2393INTERCEPTOR(int, setitimer, int which, const void *new_value, void *old_value) {
2394 void *ctx;
2395 COMMON_INTERCEPTOR_ENTER(ctx, setitimer, which, new_value, old_value);
2396 if (new_value) {
2397 // itimerval can contain padding that may be legitimately uninitialized
2398 const struct __sanitizer_itimerval *nv =
2399 (const struct __sanitizer_itimerval *)new_value;
2400 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_sec,
2401 sizeof(__sanitizer_time_t));
2402 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_usec,
2403 sizeof(__sanitizer_suseconds_t));
2404 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_sec,
2405 sizeof(__sanitizer_time_t));
2406 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_usec,
2407 sizeof(__sanitizer_suseconds_t));
2408 }
2409 // FIXME: under ASan the call below may write to freed memory and corrupt
2410 // its metadata. See
2411 // https://github.com/google/sanitizers/issues/321.
2412 int res = REAL(setitimer)(which, new_value, old_value);
2413 if (!res && old_value) {
2414 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerval_sz);
2415 }
2416 return res;
2417}
2418#define INIT_GETITIMER \
2419 COMMON_INTERCEPT_FUNCTION(getitimer); \
2420 COMMON_INTERCEPT_FUNCTION(setitimer);
2421#else
2422#define INIT_GETITIMER
2423#endif
2424
2425#if SANITIZER_INTERCEPT_TIMESPEC_GET
2426INTERCEPTOR(int, timespec_get, struct __sanitizer_timespec *ts, int base) {
2427 void *ctx;
2428 COMMON_INTERCEPTOR_ENTER(ctx, timespec_get, ts, base);
2429 // We don't yet know if ts is addressable, so we use our own scratch buffer
2430 struct __sanitizer_timespec ts_local;
2431 int res = REAL(timespec_get)(&ts_local, base);
2432 if (res) {
2433 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ts,
2434 sizeof(struct __sanitizer_timespec));
2435 internal_memcpy(ts, &ts_local, sizeof(struct __sanitizer_timespec));
2436 }
2437 return res;
2438}
2439# define INIT_TIMESPEC_GET COMMON_INTERCEPT_FUNCTION(timespec_get);
2440#else
2441# define INIT_TIMESPEC_GET
2442#endif
2443
2444#if SANITIZER_INTERCEPT_GLOB
2445static void unpoison_glob_t(void *ctx, __sanitizer_glob_t *pglob) {
2446 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pglob, sizeof(*pglob));
2447 // +1 for NULL pointer at the end.
2448 if (pglob->gl_pathv)
2449 COMMON_INTERCEPTOR_WRITE_RANGE(
2450 ctx, pglob->gl_pathv, (pglob->gl_pathc + 1) * sizeof(*pglob->gl_pathv));
2451 for (SIZE_T i = 0; i < pglob->gl_pathc; ++i) {
2452 char *p = pglob->gl_pathv[i];
2453 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, internal_strlen(p) + 1);
2454 }
2455}
2456
2457#if SANITIZER_SOLARIS
2458INTERCEPTOR(int, glob, const char *pattern, int flags,
2459 int (*errfunc)(const char *epath, int eerrno),
2460 __sanitizer_glob_t *pglob) {
2461 void *ctx;
2462 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob);
2463 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0);
2464 int res = REAL(glob)(pattern, flags, errfunc, pglob);
2465 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
2466 return res;
2467}
2468#else
2469static THREADLOCAL __sanitizer_glob_t *pglob_copy;
2470
2471static void wrapped_gl_closedir(void *dir) {
2472 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
2473 pglob_copy->gl_closedir(dir);
2474}
2475
2476static void *wrapped_gl_readdir(void *dir) {
2477 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
2478 return pglob_copy->gl_readdir(dir);
2479}
2480
2481static void *wrapped_gl_opendir(const char *s) {
2482 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
2483 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1);
2484 return pglob_copy->gl_opendir(s);
2485}
2486
2487static int wrapped_gl_lstat(const char *s, void *st) {
2488 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
2489 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1);
2490 return pglob_copy->gl_lstat(s, st);
2491}
2492
2493static int wrapped_gl_stat(const char *s, void *st) {
2494 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
2495 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1);
2496 return pglob_copy->gl_stat(s, st);
2497}
2498
2499static const __sanitizer_glob_t kGlobCopy = {
2500 0, 0, 0,
2501 0, wrapped_gl_closedir, wrapped_gl_readdir,
2502 wrapped_gl_opendir, wrapped_gl_lstat, wrapped_gl_stat};
2503
2504INTERCEPTOR(int, glob, const char *pattern, int flags,
2505 int (*errfunc)(const char *epath, int eerrno),
2506 __sanitizer_glob_t *pglob) {
2507 void *ctx;
2508 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob);
2509 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0);
2510 __sanitizer_glob_t glob_copy;
2511 internal_memcpy(&glob_copy, &kGlobCopy, sizeof(glob_copy));
2512 if (flags & glob_altdirfunc) {
2513 Swap(pglob->gl_closedir, glob_copy.gl_closedir);
2514 Swap(pglob->gl_readdir, glob_copy.gl_readdir);
2515 Swap(pglob->gl_opendir, glob_copy.gl_opendir);
2516 Swap(pglob->gl_lstat, glob_copy.gl_lstat);
2517 Swap(pglob->gl_stat, glob_copy.gl_stat);
2518 pglob_copy = &glob_copy;
2519 }
2520 int res = REAL(glob)(pattern, flags, errfunc, pglob);
2521 if (flags & glob_altdirfunc) {
2522 Swap(pglob->gl_closedir, glob_copy.gl_closedir);
2523 Swap(pglob->gl_readdir, glob_copy.gl_readdir);
2524 Swap(pglob->gl_opendir, glob_copy.gl_opendir);
2525 Swap(pglob->gl_lstat, glob_copy.gl_lstat);
2526 Swap(pglob->gl_stat, glob_copy.gl_stat);
2527 }
2528 pglob_copy = 0;
2529 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
2530 return res;
2531}
2532#endif // SANITIZER_SOLARIS
2533#define INIT_GLOB \
2534 COMMON_INTERCEPT_FUNCTION(glob);
2535#else // SANITIZER_INTERCEPT_GLOB
2536#define INIT_GLOB
2537#endif // SANITIZER_INTERCEPT_GLOB
2538
2539#if SANITIZER_INTERCEPT_GLOB64
2540INTERCEPTOR(int, glob64, const char *pattern, int flags,
2541 int (*errfunc)(const char *epath, int eerrno),
2542 __sanitizer_glob_t *pglob) {
2543 void *ctx;
2544 COMMON_INTERCEPTOR_ENTER(ctx, glob64, pattern, flags, errfunc, pglob);
2545 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0);
2546 __sanitizer_glob_t glob_copy;
2547 internal_memcpy(&glob_copy, &kGlobCopy, sizeof(glob_copy));
2548 if (flags & glob_altdirfunc) {
2549 Swap(pglob->gl_closedir, glob_copy.gl_closedir);
2550 Swap(pglob->gl_readdir, glob_copy.gl_readdir);
2551 Swap(pglob->gl_opendir, glob_copy.gl_opendir);
2552 Swap(pglob->gl_lstat, glob_copy.gl_lstat);
2553 Swap(pglob->gl_stat, glob_copy.gl_stat);
2554 pglob_copy = &glob_copy;
2555 }
2556 int res = REAL(glob64)(pattern, flags, errfunc, pglob);
2557 if (flags & glob_altdirfunc) {
2558 Swap(pglob->gl_closedir, glob_copy.gl_closedir);
2559 Swap(pglob->gl_readdir, glob_copy.gl_readdir);
2560 Swap(pglob->gl_opendir, glob_copy.gl_opendir);
2561 Swap(pglob->gl_lstat, glob_copy.gl_lstat);
2562 Swap(pglob->gl_stat, glob_copy.gl_stat);
2563 }
2564 pglob_copy = 0;
2565 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
2566 return res;
2567}
2568#define INIT_GLOB64 \
2569 COMMON_INTERCEPT_FUNCTION(glob64);
2570#else // SANITIZER_INTERCEPT_GLOB64
2571#define INIT_GLOB64
2572#endif // SANITIZER_INTERCEPT_GLOB64
2573
2574#if SANITIZER_INTERCEPT___B64_TO
2575INTERCEPTOR(int, __b64_ntop, unsigned char const *src, SIZE_T srclength,
2576 char *target, SIZE_T targsize) {
2577 void *ctx;
2578 COMMON_INTERCEPTOR_ENTER(ctx, __b64_ntop, src, srclength, target, targsize);
2579 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, srclength);
2580 int res = REAL(__b64_ntop)(src, srclength, target, targsize);
2581 if (res >= 0)
2582 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, target, res + 1);
2583 return res;
2584}
2585INTERCEPTOR(int, __b64_pton, char const *src, char *target, SIZE_T targsize) {
2586 void *ctx;
2587 COMMON_INTERCEPTOR_ENTER(ctx, __b64_pton, src, target, targsize);
2588 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
2589 int res = REAL(__b64_pton)(src, target, targsize);
2590 if (res >= 0)
2591 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, target, res);
2592 return res;
2593}
2594#define INIT___B64_TO \
2595 COMMON_INTERCEPT_FUNCTION(__b64_ntop); \
2596 COMMON_INTERCEPT_FUNCTION(__b64_pton);
2597#else // SANITIZER_INTERCEPT___B64_TO
2598#define INIT___B64_TO
2599#endif // SANITIZER_INTERCEPT___B64_TO
2600
2601#if SANITIZER_INTERCEPT_DN_COMP_EXPAND
2602# if __GLIBC_PREREQ(2, 34)
2603// Changed with https://sourceware.org/git/?p=glibc.git;h=640bbdf
2604# define DN_COMP_INTERCEPTOR_NAME dn_comp
2605# define DN_EXPAND_INTERCEPTOR_NAME dn_expand
2606# else
2607# define DN_COMP_INTERCEPTOR_NAME __dn_comp
2608# define DN_EXPAND_INTERCEPTOR_NAME __dn_expand
2609# endif
2610INTERCEPTOR(int, DN_COMP_INTERCEPTOR_NAME, unsigned char *exp_dn,
2611 unsigned char *comp_dn, int length, unsigned char **dnptrs,
2612 unsigned char **lastdnptr) {
2613 void *ctx;
2614 COMMON_INTERCEPTOR_ENTER(ctx, DN_COMP_INTERCEPTOR_NAME, exp_dn, comp_dn,
2615 length, dnptrs, lastdnptr);
2616 int res = REAL(DN_COMP_INTERCEPTOR_NAME)(exp_dn, comp_dn, length, dnptrs,
2617 lastdnptr);
2618 if (res >= 0) {
2619 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, comp_dn, res);
2620 if (dnptrs && lastdnptr) {
2621 unsigned char **p = dnptrs;
2622 for (; p != lastdnptr && *p; ++p)
2623 ;
2624 if (p != lastdnptr)
2625 ++p;
2626 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dnptrs, (p - dnptrs) * sizeof(*p));
2627 }
2628 }
2629 return res;
2630}
2631INTERCEPTOR(int, DN_EXPAND_INTERCEPTOR_NAME, unsigned char const *base,
2632 unsigned char const *end, unsigned char const *src, char *dest,
2633 int space) {
2634 void *ctx;
2635 COMMON_INTERCEPTOR_ENTER(ctx, DN_EXPAND_INTERCEPTOR_NAME, base, end, src,
2636 dest, space);
2637 // TODO: add read check if __dn_comp intercept added
2638 int res = REAL(DN_EXPAND_INTERCEPTOR_NAME)(base, end, src, dest, space);
2639 if (res >= 0)
2640 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, internal_strlen(dest) + 1);
2641 return res;
2642}
2643# define INIT_DN_COMP_EXPAND \
2644 COMMON_INTERCEPT_FUNCTION(DN_COMP_INTERCEPTOR_NAME); \
2645 COMMON_INTERCEPT_FUNCTION(DN_EXPAND_INTERCEPTOR_NAME);
2646#else // SANITIZER_INTERCEPT_DN_COMP_EXPAND
2647# define INIT_DN_COMP_EXPAND
2648#endif // SANITIZER_INTERCEPT_DN_COMP_EXPAND
2649
2650#if SANITIZER_INTERCEPT_POSIX_SPAWN
2651
2652template <class RealSpawnPtr>
2653static int PosixSpawnImpl(void *ctx, RealSpawnPtr *real_posix_spawn, pid_t *pid,
2654 const char *file_or_path, const void *file_actions,
2655 const void *attrp, char *const argv[],
2656 char *const envp[]) {
2657 COMMON_INTERCEPTOR_READ_RANGE(ctx, file_or_path,
2658 internal_strlen(file_or_path) + 1);
2659 if (argv) {
2660 for (char *const *s = argv; ; ++s) {
2661 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(*s));
2662 if (!*s) break;
2663 COMMON_INTERCEPTOR_READ_RANGE(ctx, *s, internal_strlen(*s) + 1);
2664 }
2665 }
2666 if (envp) {
2667 for (char *const *s = envp; ; ++s) {
2668 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(*s));
2669 if (!*s) break;
2670 COMMON_INTERCEPTOR_READ_RANGE(ctx, *s, internal_strlen(*s) + 1);
2671 }
2672 }
2673 int res =
2674 real_posix_spawn(pid, file_or_path, file_actions, attrp, argv, envp);
2675 if (res == 0)
2676 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pid, sizeof(*pid));
2677 return res;
2678}
2679INTERCEPTOR(int, posix_spawn, pid_t *pid, const char *path,
2680 const void *file_actions, const void *attrp, char *const argv[],
2681 char *const envp[]) {
2682 void *ctx;
2683 COMMON_INTERCEPTOR_ENTER(ctx, posix_spawn, pid, path, file_actions, attrp,
2684 argv, envp);
2685 return PosixSpawnImpl(ctx, REAL(posix_spawn), pid, path, file_actions, attrp,
2686 argv, envp);
2687}
2688INTERCEPTOR(int, posix_spawnp, pid_t *pid, const char *file,
2689 const void *file_actions, const void *attrp, char *const argv[],
2690 char *const envp[]) {
2691 void *ctx;
2692 COMMON_INTERCEPTOR_ENTER(ctx, posix_spawnp, pid, file, file_actions, attrp,
2693 argv, envp);
2694 return PosixSpawnImpl(ctx, REAL(posix_spawnp), pid, file, file_actions, attrp,
2695 argv, envp);
2696}
2697# define INIT_POSIX_SPAWN \
2698 COMMON_INTERCEPT_FUNCTION(posix_spawn); \
2699 COMMON_INTERCEPT_FUNCTION(posix_spawnp);
2700#else // SANITIZER_INTERCEPT_POSIX_SPAWN
2701# define INIT_POSIX_SPAWN
2702#endif // SANITIZER_INTERCEPT_POSIX_SPAWN
2703
2704#if SANITIZER_INTERCEPT_WAIT
2705// According to sys/wait.h, wait(), waitid(), waitpid() may have symbol version
2706// suffixes on Darwin. See the declaration of INTERCEPTOR_WITH_SUFFIX for
2707// details.
2708INTERCEPTOR_WITH_SUFFIX(int, wait, int *status) {
2709 void *ctx;
2710 COMMON_INTERCEPTOR_ENTER(ctx, wait, status);
2711 // FIXME: under ASan the call below may write to freed memory and corrupt
2712 // its metadata. See
2713 // https://github.com/google/sanitizers/issues/321.
2714 int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait)(status);
2715 if (res != -1 && status)
2716 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2717 return res;
2718}
2719// On FreeBSD id_t is always 64-bit wide.
2720#if SANITIZER_FREEBSD && (SANITIZER_WORDSIZE == 32)
2721INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, long long id, void *infop,
2722 int options) {
2723#else
2724INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, int id, void *infop,
2725 int options) {
2726#endif
2727 void *ctx;
2728 COMMON_INTERCEPTOR_ENTER(ctx, waitid, idtype, id, infop, options);
2729 // FIXME: under ASan the call below may write to freed memory and corrupt
2730 // its metadata. See
2731 // https://github.com/google/sanitizers/issues/321.
2732 int res = COMMON_INTERCEPTOR_BLOCK_REAL(waitid)(idtype, id, infop, options);
2733 if (res != -1 && infop)
2734 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, infop, siginfo_t_sz);
2735 return res;
2736}
2737INTERCEPTOR_WITH_SUFFIX(int, waitpid, int pid, int *status, int options) {
2738 void *ctx;
2739 COMMON_INTERCEPTOR_ENTER(ctx, waitpid, pid, status, options);
2740 // FIXME: under ASan the call below may write to freed memory and corrupt
2741 // its metadata. See
2742 // https://github.com/google/sanitizers/issues/321.
2743 int res = COMMON_INTERCEPTOR_BLOCK_REAL(waitpid)(pid, status, options);
2744 if (res != -1 && status)
2745 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2746 return res;
2747}
2748INTERCEPTOR(int, wait3, int *status, int options, void *rusage) {
2749 void *ctx;
2750 COMMON_INTERCEPTOR_ENTER(ctx, wait3, status, options, rusage);
2751 // FIXME: under ASan the call below may write to freed memory and corrupt
2752 // its metadata. See
2753 // https://github.com/google/sanitizers/issues/321.
2754 int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait3)(status, options, rusage);
2755 if (res != -1) {
2756 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2757 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
2758 }
2759 return res;
2760}
2761#if SANITIZER_ANDROID
2762INTERCEPTOR(int, __wait4, int pid, int *status, int options, void *rusage) {
2763 void *ctx;
2764 COMMON_INTERCEPTOR_ENTER(ctx, __wait4, pid, status, options, rusage);
2765 // FIXME: under ASan the call below may write to freed memory and corrupt
2766 // its metadata. See
2767 // https://github.com/google/sanitizers/issues/321.
2768 int res =
2769 COMMON_INTERCEPTOR_BLOCK_REAL(__wait4)(pid, status, options, rusage);
2770 if (res != -1) {
2771 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2772 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
2773 }
2774 return res;
2775}
2776#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(__wait4);
2777#else
2778INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) {
2779 void *ctx;
2780 COMMON_INTERCEPTOR_ENTER(ctx, wait4, pid, status, options, rusage);
2781 // FIXME: under ASan the call below may write to freed memory and corrupt
2782 // its metadata. See
2783 // https://github.com/google/sanitizers/issues/321.
2784 int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait4)(pid, status, options, rusage);
2785 if (res != -1) {
2786 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2787 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
2788 }
2789 return res;
2790}
2791#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(wait4);
2792#endif // SANITIZER_ANDROID
2793#define INIT_WAIT \
2794 COMMON_INTERCEPT_FUNCTION(wait); \
2795 COMMON_INTERCEPT_FUNCTION(waitid); \
2796 COMMON_INTERCEPT_FUNCTION(waitpid); \
2797 COMMON_INTERCEPT_FUNCTION(wait3);
2798#else
2799#define INIT_WAIT
2800#define INIT_WAIT4
2801#endif
2802
2803#if SANITIZER_INTERCEPT_INET
2804INTERCEPTOR(char *, inet_ntop, int af, const void *src, char *dst, u32 size) {
2805 void *ctx;
2806 COMMON_INTERCEPTOR_ENTER(ctx, inet_ntop, af, src, dst, size);
2807 uptr sz = __sanitizer_in_addr_sz(af);
2808 if (sz) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sz);
2809 // FIXME: figure out read size based on the address family.
2810 // FIXME: under ASan the call below may write to freed memory and corrupt
2811 // its metadata. See
2812 // https://github.com/google/sanitizers/issues/321.
2813 char *res = REAL(inet_ntop)(af, src, dst, size);
2814 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
2815 return res;
2816}
2817INTERCEPTOR(int, inet_pton, int af, const char *src, void *dst) {
2818 void *ctx;
2819 COMMON_INTERCEPTOR_ENTER(ctx, inet_pton, af, src, dst);
2820 COMMON_INTERCEPTOR_READ_STRING(ctx, src, 0);
2821 // FIXME: figure out read size based on the address family.
2822 // FIXME: under ASan the call below may write to freed memory and corrupt
2823 // its metadata. See
2824 // https://github.com/google/sanitizers/issues/321.
2825 int res = REAL(inet_pton)(af, src, dst);
2826 if (res == 1) {
2827 uptr sz = __sanitizer_in_addr_sz(af);
2828 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
2829 }
2830 return res;
2831}
2832#define INIT_INET \
2833 COMMON_INTERCEPT_FUNCTION(inet_ntop); \
2834 COMMON_INTERCEPT_FUNCTION(inet_pton);
2835#else
2836#define INIT_INET
2837#endif
2838
2839#if SANITIZER_INTERCEPT_INET
2840INTERCEPTOR(int, inet_aton, const char *cp, void *dst) {
2841 void *ctx;
2842 COMMON_INTERCEPTOR_ENTER(ctx, inet_aton, cp, dst);
2843 if (cp) COMMON_INTERCEPTOR_READ_RANGE(ctx, cp, internal_strlen(cp) + 1);
2844 // FIXME: under ASan the call below may write to freed memory and corrupt
2845 // its metadata. See
2846 // https://github.com/google/sanitizers/issues/321.
2847 int res = REAL(inet_aton)(cp, dst);
2848 if (res != 0) {
2849 uptr sz = __sanitizer_in_addr_sz(af_inet);
2850 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
2851 }
2852 return res;
2853}
2854#define INIT_INET_ATON COMMON_INTERCEPT_FUNCTION(inet_aton);
2855#else
2856#define INIT_INET_ATON
2857#endif
2858
2859#if SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM
2860INTERCEPTOR(int, pthread_getschedparam, uptr thread, int *policy, int *param) {
2861 void *ctx;
2862 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getschedparam, thread, policy, param);
2863 // FIXME: under ASan the call below may write to freed memory and corrupt
2864 // its metadata. See
2865 // https://github.com/google/sanitizers/issues/321.
2866 int res = REAL(pthread_getschedparam)(thread, policy, param);
2867 if (res == 0) {
2868 if (policy) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, policy, sizeof(*policy));
2869 if (param) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, sizeof(*param));
2870 }
2871 return res;
2872}
2873#define INIT_PTHREAD_GETSCHEDPARAM \
2874 COMMON_INTERCEPT_FUNCTION(pthread_getschedparam);
2875#else
2876#define INIT_PTHREAD_GETSCHEDPARAM
2877#endif
2878
2879#if SANITIZER_INTERCEPT_GETADDRINFO
2880INTERCEPTOR(int, getaddrinfo, char *node, char *service,
2881 struct __sanitizer_addrinfo *hints,
2882 struct __sanitizer_addrinfo **out) {
2883 void *ctx;
2884 COMMON_INTERCEPTOR_ENTER(ctx, getaddrinfo, node, service, hints, out);
2885 if (node) COMMON_INTERCEPTOR_READ_RANGE(ctx, node, internal_strlen(node) + 1);
2886 if (service)
2887 COMMON_INTERCEPTOR_READ_RANGE(ctx, service, internal_strlen(service) + 1);
2888 if (hints)
2889 COMMON_INTERCEPTOR_READ_RANGE(ctx, hints, sizeof(__sanitizer_addrinfo));
2890 // FIXME: under ASan the call below may write to freed memory and corrupt
2891 // its metadata. See
2892 // https://github.com/google/sanitizers/issues/321.
2893 int res = REAL(getaddrinfo)(node, service, hints, out);
2894 if (res == 0 && out) {
2895 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, out, sizeof(*out));
2896 struct __sanitizer_addrinfo *p = *out;
2897 while (p) {
2898 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
2899 if (p->ai_addr)
2900 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_addr, p->ai_addrlen);
2901 if (p->ai_canonname)
2902 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_canonname,
2903 internal_strlen(p->ai_canonname) + 1);
2904 p = p->ai_next;
2905 }
2906 }
2907 return res;
2908}
2909#define INIT_GETADDRINFO COMMON_INTERCEPT_FUNCTION(getaddrinfo);
2910#else
2911#define INIT_GETADDRINFO
2912#endif
2913
2914#if SANITIZER_INTERCEPT_GETNAMEINFO
2915INTERCEPTOR(int, getnameinfo, void *sockaddr, unsigned salen, char *host,
2916 unsigned hostlen, char *serv, unsigned servlen, int flags) {
2917 void *ctx;
2918 COMMON_INTERCEPTOR_ENTER(ctx, getnameinfo, sockaddr, salen, host, hostlen,
2919 serv, servlen, flags);
2920 // FIXME: consider adding READ_RANGE(sockaddr, salen)
2921 // There is padding in in_addr that may make this too noisy
2922 // FIXME: under ASan the call below may write to freed memory and corrupt
2923 // its metadata. See
2924 // https://github.com/google/sanitizers/issues/321.
2925 int res =
2926 REAL(getnameinfo)(sockaddr, salen, host, hostlen, serv, servlen, flags);
2927 if (res == 0) {
2928 if (host && hostlen)
2929 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, host, internal_strlen(host) + 1);
2930 if (serv && servlen)
2931 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, serv, internal_strlen(serv) + 1);
2932 }
2933 return res;
2934}
2935#define INIT_GETNAMEINFO COMMON_INTERCEPT_FUNCTION(getnameinfo);
2936#else
2937#define INIT_GETNAMEINFO
2938#endif
2939
2940#if SANITIZER_INTERCEPT_GETSOCKNAME
2941INTERCEPTOR(int, getsockname, int sock_fd, void *addr, unsigned *addrlen) {
2942 void *ctx;
2943 COMMON_INTERCEPTOR_ENTER(ctx, getsockname, sock_fd, addr, addrlen);
2944 unsigned addr_sz;
2945 if (addrlen) {
2946 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
2947 addr_sz = *addrlen;
2948 }
2949 // FIXME: under ASan the call below may write to freed memory and corrupt
2950 // its metadata. See
2951 // https://github.com/google/sanitizers/issues/321.
2952 int res = REAL(getsockname)(sock_fd, addr, addrlen);
2953 if (!res && addr && addrlen) {
2954 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen));
2955 }
2956 return res;
2957}
2958#define INIT_GETSOCKNAME COMMON_INTERCEPT_FUNCTION(getsockname);
2959#else
2960#define INIT_GETSOCKNAME
2961#endif
2962
2963#if SANITIZER_INTERCEPT_GETHOSTBYNAME || SANITIZER_INTERCEPT_GETHOSTBYNAME_R
2964static void write_hostent(void *ctx, struct __sanitizer_hostent *h) {
2965 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h, sizeof(__sanitizer_hostent));
2966 if (h->h_name)
2967 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h->h_name, internal_strlen(h->h_name) + 1);
2968 char **p = h->h_aliases;
2969 while (*p) {
2970 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1);
2971 ++p;
2972 }
2973 COMMON_INTERCEPTOR_WRITE_RANGE(
2974 ctx, h->h_aliases, (p - h->h_aliases + 1) * sizeof(*h->h_aliases));
2975 p = h->h_addr_list;
2976 while (*p) {
2977 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, h->h_length);
2978 ++p;
2979 }
2980 COMMON_INTERCEPTOR_WRITE_RANGE(
2981 ctx, h->h_addr_list, (p - h->h_addr_list + 1) * sizeof(*h->h_addr_list));
2982}
2983#endif
2984
2985#if SANITIZER_INTERCEPT_GETHOSTBYNAME
2986INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname, char *name) {
2987 void *ctx;
2988 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname, name);
2989 struct __sanitizer_hostent *res = REAL(gethostbyname)(name);
2990 if (res) write_hostent(ctx, res);
2991 return res;
2992}
2993
2994INTERCEPTOR(struct __sanitizer_hostent *, gethostbyaddr, void *addr, int len,
2995 int type) {
2996 void *ctx;
2997 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr, addr, len, type);
2998 COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len);
2999 struct __sanitizer_hostent *res = REAL(gethostbyaddr)(addr, len, type);
3000 if (res) write_hostent(ctx, res);
3001 return res;
3002}
3003
3004INTERCEPTOR(struct __sanitizer_hostent *, gethostent, int fake) {
3005 void *ctx;
3006 COMMON_INTERCEPTOR_ENTER(ctx, gethostent, fake);
3007 struct __sanitizer_hostent *res = REAL(gethostent)(fake);
3008 if (res) write_hostent(ctx, res);
3009 return res;
3010}
3011#define INIT_GETHOSTBYNAME \
3012 COMMON_INTERCEPT_FUNCTION(gethostent); \
3013 COMMON_INTERCEPT_FUNCTION(gethostbyaddr); \
3014 COMMON_INTERCEPT_FUNCTION(gethostbyname);
3015#else
3016#define INIT_GETHOSTBYNAME
3017#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME
3018
3019#if SANITIZER_INTERCEPT_GETHOSTBYNAME2
3020INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname2, char *name, int af) {
3021 void *ctx;
3022 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2, name, af);
3023 struct __sanitizer_hostent *res = REAL(gethostbyname2)(name, af);
3024 if (res) write_hostent(ctx, res);
3025 return res;
3026}
3027#define INIT_GETHOSTBYNAME2 COMMON_INTERCEPT_FUNCTION(gethostbyname2);
3028#else
3029#define INIT_GETHOSTBYNAME2
3030#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME2
3031
3032#if SANITIZER_INTERCEPT_GETHOSTBYNAME_R
3033INTERCEPTOR(int, gethostbyname_r, char *name, struct __sanitizer_hostent *ret,
3034 char *buf, SIZE_T buflen, __sanitizer_hostent **result,
3035 int *h_errnop) {
3036 void *ctx;
3037 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname_r, name, ret, buf, buflen, result,
3038 h_errnop);
3039 // FIXME: under ASan the call below may write to freed memory and corrupt
3040 // its metadata. See
3041 // https://github.com/google/sanitizers/issues/321.
3042 int res = REAL(gethostbyname_r)(name, ret, buf, buflen, result, h_errnop);
3043 if (result) {
3044 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3045 if (res == 0 && *result) write_hostent(ctx, *result);
3046 }
3047 if (h_errnop)
3048 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
3049 return res;
3050}
3051#define INIT_GETHOSTBYNAME_R COMMON_INTERCEPT_FUNCTION(gethostbyname_r);
3052#else
3053#define INIT_GETHOSTBYNAME_R
3054#endif
3055
3056#if SANITIZER_INTERCEPT_GETHOSTENT_R
3057INTERCEPTOR(int, gethostent_r, struct __sanitizer_hostent *ret, char *buf,
3058 SIZE_T buflen, __sanitizer_hostent **result, int *h_errnop) {
3059 void *ctx;
3060 COMMON_INTERCEPTOR_ENTER(ctx, gethostent_r, ret, buf, buflen, result,
3061 h_errnop);
3062 // FIXME: under ASan the call below may write to freed memory and corrupt
3063 // its metadata. See
3064 // https://github.com/google/sanitizers/issues/321.
3065 int res = REAL(gethostent_r)(ret, buf, buflen, result, h_errnop);
3066 if (result) {
3067 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3068 if (res == 0 && *result) write_hostent(ctx, *result);
3069 }
3070 if (h_errnop)
3071 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
3072 return res;
3073}
3074#define INIT_GETHOSTENT_R \
3075 COMMON_INTERCEPT_FUNCTION(gethostent_r);
3076#else
3077#define INIT_GETHOSTENT_R
3078#endif
3079
3080#if SANITIZER_INTERCEPT_GETHOSTBYADDR_R
3081INTERCEPTOR(int, gethostbyaddr_r, void *addr, int len, int type,
3082 struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen,
3083 __sanitizer_hostent **result, int *h_errnop) {
3084 void *ctx;
3085 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr_r, addr, len, type, ret, buf,
3086 buflen, result, h_errnop);
3087 COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len);
3088 // FIXME: under ASan the call below may write to freed memory and corrupt
3089 // its metadata. See
3090 // https://github.com/google/sanitizers/issues/321.
3091 int res = REAL(gethostbyaddr_r)(addr, len, type, ret, buf, buflen, result,
3092 h_errnop);
3093 if (result) {
3094 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3095 if (res == 0 && *result) write_hostent(ctx, *result);
3096 }
3097 if (h_errnop)
3098 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
3099 return res;
3100}
3101#define INIT_GETHOSTBYADDR_R \
3102 COMMON_INTERCEPT_FUNCTION(gethostbyaddr_r);
3103#else
3104#define INIT_GETHOSTBYADDR_R
3105#endif
3106
3107#if SANITIZER_INTERCEPT_GETHOSTBYNAME2_R
3108INTERCEPTOR(int, gethostbyname2_r, char *name, int af,
3109 struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen,
3110 __sanitizer_hostent **result, int *h_errnop) {
3111 void *ctx;
3112 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2_r, name, af, ret, buf, buflen,
3113 result, h_errnop);
3114 // FIXME: under ASan the call below may write to freed memory and corrupt
3115 // its metadata. See
3116 // https://github.com/google/sanitizers/issues/321.
3117 int res =
3118 REAL(gethostbyname2_r)(name, af, ret, buf, buflen, result, h_errnop);
3119 if (result) {
3120 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3121 if (res == 0 && *result) write_hostent(ctx, *result);
3122 }
3123 if (h_errnop)
3124 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
3125 return res;
3126}
3127#define INIT_GETHOSTBYNAME2_R \
3128 COMMON_INTERCEPT_FUNCTION(gethostbyname2_r);
3129#else
3130#define INIT_GETHOSTBYNAME2_R
3131#endif
3132
3133#if SANITIZER_INTERCEPT_GETSOCKOPT
3134INTERCEPTOR(int, getsockopt, int sockfd, int level, int optname, void *optval,
3135 int *optlen) {
3136 void *ctx;
3137 COMMON_INTERCEPTOR_ENTER(ctx, getsockopt, sockfd, level, optname, optval,
3138 optlen);
3139 if (optlen) COMMON_INTERCEPTOR_READ_RANGE(ctx, optlen, sizeof(*optlen));
3140 // FIXME: under ASan the call below may write to freed memory and corrupt
3141 // its metadata. See
3142 // https://github.com/google/sanitizers/issues/321.
3143 int res = REAL(getsockopt)(sockfd, level, optname, optval, optlen);
3144 if (res == 0)
3145 if (optval && optlen) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, optval, *optlen);
3146 return res;
3147}
3148#define INIT_GETSOCKOPT COMMON_INTERCEPT_FUNCTION(getsockopt);
3149#else
3150#define INIT_GETSOCKOPT
3151#endif
3152
3153#if SANITIZER_INTERCEPT_ACCEPT
3154INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) {
3155 void *ctx;
3156 COMMON_INTERCEPTOR_ENTER(ctx, accept, fd, addr, addrlen);
3157 unsigned addrlen0 = 0;
3158 if (addrlen) {
3159 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
3160 addrlen0 = *addrlen;
3161 }
3162 int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(accept)(fd, addr, addrlen);
3163 if (fd2 >= 0) {
3164 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
3165 if (addr && addrlen)
3166 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
3167 }
3168 return fd2;
3169}
3170#define INIT_ACCEPT COMMON_INTERCEPT_FUNCTION(accept);
3171#else
3172#define INIT_ACCEPT
3173#endif
3174
3175#if SANITIZER_INTERCEPT_ACCEPT4
3176INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) {
3177 void *ctx;
3178 COMMON_INTERCEPTOR_ENTER(ctx, accept4, fd, addr, addrlen, f);
3179 unsigned addrlen0 = 0;
3180 if (addrlen) {
3181 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
3182 addrlen0 = *addrlen;
3183 }
3184 // FIXME: under ASan the call below may write to freed memory and corrupt
3185 // its metadata. See
3186 // https://github.com/google/sanitizers/issues/321.
3187 int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(accept4)(fd, addr, addrlen, f);
3188 if (fd2 >= 0) {
3189 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
3190 if (addr && addrlen)
3191 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
3192 }
3193 return fd2;
3194}
3195#define INIT_ACCEPT4 COMMON_INTERCEPT_FUNCTION(accept4);
3196#else
3197#define INIT_ACCEPT4
3198#endif
3199
3200#if SANITIZER_INTERCEPT_PACCEPT
3201INTERCEPTOR(int, paccept, int fd, void *addr, unsigned *addrlen,
3202 __sanitizer_sigset_t *set, int f) {
3203 void *ctx;
3204 COMMON_INTERCEPTOR_ENTER(ctx, paccept, fd, addr, addrlen, set, f);
3205 unsigned addrlen0 = 0;
3206 if (addrlen) {
3207 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
3208 addrlen0 = *addrlen;
3209 }
3210 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
3211 int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(paccept)(fd, addr, addrlen, set, f);
3212 if (fd2 >= 0) {
3213 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
3214 if (addr && addrlen)
3215 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
3216 }
3217 return fd2;
3218}
3219#define INIT_PACCEPT COMMON_INTERCEPT_FUNCTION(paccept);
3220#else
3221#define INIT_PACCEPT
3222#endif
3223
3224#if SANITIZER_INTERCEPT_MODF
3225INTERCEPTOR(double, modf, double x, double *iptr) {
3226 void *ctx;
3227 COMMON_INTERCEPTOR_ENTER(ctx, modf, x, iptr);
3228 // FIXME: under ASan the call below may write to freed memory and corrupt
3229 // its metadata. See
3230 // https://github.com/google/sanitizers/issues/321.
3231 double res = REAL(modf)(x, iptr);
3232 if (iptr) {
3233 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
3234 }
3235 return res;
3236}
3237INTERCEPTOR(float, modff, float x, float *iptr) {
3238 void *ctx;
3239 COMMON_INTERCEPTOR_ENTER(ctx, modff, x, iptr);
3240 // FIXME: under ASan the call below may write to freed memory and corrupt
3241 // its metadata. See
3242 // https://github.com/google/sanitizers/issues/321.
3243 float res = REAL(modff)(x, iptr);
3244 if (iptr) {
3245 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
3246 }
3247 return res;
3248}
3249INTERCEPTOR(long double, modfl, long double x, long double *iptr) {
3250 void *ctx;
3251 COMMON_INTERCEPTOR_ENTER(ctx, modfl, x, iptr);
3252 // FIXME: under ASan the call below may write to freed memory and corrupt
3253 // its metadata. See
3254 // https://github.com/google/sanitizers/issues/321.
3255 long double res = REAL(modfl)(x, iptr);
3256 if (iptr) {
3257 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
3258 }
3259 return res;
3260}
3261#define INIT_MODF \
3262 COMMON_INTERCEPT_FUNCTION(modf); \
3263 COMMON_INTERCEPT_FUNCTION(modff); \
3264 COMMON_INTERCEPT_FUNCTION_LDBL(modfl);
3265#else
3266#define INIT_MODF
3267#endif
3268
3269#if SANITIZER_INTERCEPT_RECVMSG || SANITIZER_INTERCEPT_RECVMMSG
3270static void write_msghdr(void *ctx, struct __sanitizer_msghdr *msg,
3271 SSIZE_T maxlen) {
3272 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg, sizeof(*msg));
3273 if (msg->msg_name && msg->msg_namelen)
3274 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_name, msg->msg_namelen);
3275 if (msg->msg_iov && msg->msg_iovlen)
3276 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_iov,
3277 sizeof(*msg->msg_iov) * msg->msg_iovlen);
3278 write_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen);
3279 if (msg->msg_control && msg->msg_controllen)
3280 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_control, msg->msg_controllen);
3281}
3282#endif
3283
3284#if SANITIZER_INTERCEPT_RECVMSG
3285INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct __sanitizer_msghdr *msg,
3286 int flags) {
3287 void *ctx;
3288 COMMON_INTERCEPTOR_ENTER(ctx, recvmsg, fd, msg, flags);
3289 // FIXME: under ASan the call below may write to freed memory and corrupt
3290 // its metadata. See
3291 // https://github.com/google/sanitizers/issues/321.
3292 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recvmsg)(fd, msg, flags);
3293 if (res >= 0) {
3294 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
3295 if (msg) {
3296 write_msghdr(ctx, msg, res);
3297 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg);
3298 }
3299 }
3300 return res;
3301}
3302#define INIT_RECVMSG COMMON_INTERCEPT_FUNCTION(recvmsg);
3303#else
3304#define INIT_RECVMSG
3305#endif
3306
3307#if SANITIZER_INTERCEPT_RECVMMSG
3308INTERCEPTOR(int, recvmmsg, int fd, struct __sanitizer_mmsghdr *msgvec,
3309 unsigned int vlen, int flags, void *timeout) {
3310 void *ctx;
3311 COMMON_INTERCEPTOR_ENTER(ctx, recvmmsg, fd, msgvec, vlen, flags, timeout);
3312 if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz);
3313 int res =
3314 COMMON_INTERCEPTOR_BLOCK_REAL(recvmmsg)(fd, msgvec, vlen, flags, timeout);
3315 if (res >= 0) {
3316 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
3317 for (int i = 0; i < res; ++i) {
3318 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len,
3319 sizeof(msgvec[i].msg_len));
3320 write_msghdr(ctx, &msgvec[i].msg_hdr, msgvec[i].msg_len);
3321 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, &msgvec[i].msg_hdr);
3322 }
3323 }
3324 return res;
3325}
3326#define INIT_RECVMMSG COMMON_INTERCEPT_FUNCTION(recvmmsg);
3327#else
3328#define INIT_RECVMMSG
3329#endif
3330
3331#if SANITIZER_INTERCEPT_SENDMSG || SANITIZER_INTERCEPT_SENDMMSG
3332static void read_msghdr_control(void *ctx, void *control, uptr controllen) {
3333 const unsigned kCmsgDataOffset =
3334 RoundUpTo(sizeof(__sanitizer_cmsghdr), sizeof(uptr));
3335
3336 char *p = (char *)control;
3337 char *const control_end = p + controllen;
3338 while (true) {
3339 if (p + sizeof(__sanitizer_cmsghdr) > control_end) break;
3340 __sanitizer_cmsghdr *cmsg = (__sanitizer_cmsghdr *)p;
3341 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_len, sizeof(cmsg->cmsg_len));
3342
3343 if (p + RoundUpTo(cmsg->cmsg_len, sizeof(uptr)) > control_end) break;
3344
3345 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_level,
3346 sizeof(cmsg->cmsg_level));
3347 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_type,
3348 sizeof(cmsg->cmsg_type));
3349
3350 if (cmsg->cmsg_len > kCmsgDataOffset) {
3351 char *data = p + kCmsgDataOffset;
3352 unsigned data_len = cmsg->cmsg_len - kCmsgDataOffset;
3353 if (data_len > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, data, data_len);
3354 }
3355
3356 p += RoundUpTo(cmsg->cmsg_len, sizeof(uptr));
3357 }
3358}
3359
3360static void read_msghdr(void *ctx, struct __sanitizer_msghdr *msg,
3361 SSIZE_T maxlen) {
3362#define R(f) \
3363 COMMON_INTERCEPTOR_READ_RANGE(ctx, &msg->msg_##f, sizeof(msg->msg_##f))
3364 R(name);
3365 R(namelen);
3366 R(iov);
3367 R(iovlen);
3368 R(control);
3369 R(controllen);
3370 R(flags);
3371#undef R
3372 if (msg->msg_name && msg->msg_namelen)
3373 COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_name, msg->msg_namelen);
3374 if (msg->msg_iov && msg->msg_iovlen)
3375 COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_iov,
3376 sizeof(*msg->msg_iov) * msg->msg_iovlen);
3377 read_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen);
3378 if (msg->msg_control && msg->msg_controllen)
3379 read_msghdr_control(ctx, msg->msg_control, msg->msg_controllen);
3380}
3381#endif
3382
3383#if SANITIZER_INTERCEPT_SENDMSG
3384INTERCEPTOR(SSIZE_T, sendmsg, int fd, struct __sanitizer_msghdr *msg,
3385 int flags) {
3386 void *ctx;
3387 COMMON_INTERCEPTOR_ENTER(ctx, sendmsg, fd, msg, flags);
3388 if (fd >= 0) {
3389 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
3390 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
3391 }
3392 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(sendmsg)(fd, msg, flags);
3393 if (common_flags()->intercept_send && res >= 0 && msg)
3394 read_msghdr(ctx, msg, res);
3395 return res;
3396}
3397#define INIT_SENDMSG COMMON_INTERCEPT_FUNCTION(sendmsg);
3398#else
3399#define INIT_SENDMSG
3400#endif
3401
3402#if SANITIZER_INTERCEPT_SENDMMSG
3403INTERCEPTOR(int, sendmmsg, int fd, struct __sanitizer_mmsghdr *msgvec,
3404 unsigned vlen, int flags) {
3405 void *ctx;
3406 COMMON_INTERCEPTOR_ENTER(ctx, sendmmsg, fd, msgvec, vlen, flags);
3407 if (fd >= 0) {
3408 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
3409 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
3410 }
3411 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sendmmsg)(fd, msgvec, vlen, flags);
3412 if (res >= 0 && msgvec) {
3413 for (int i = 0; i < res; ++i) {
3414 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len,
3415 sizeof(msgvec[i].msg_len));
3416 if (common_flags()->intercept_send)
3417 read_msghdr(ctx, &msgvec[i].msg_hdr, msgvec[i].msg_len);
3418 }
3419 }
3420 return res;
3421}
3422#define INIT_SENDMMSG COMMON_INTERCEPT_FUNCTION(sendmmsg);
3423#else
3424#define INIT_SENDMMSG
3425#endif
3426
3427#if SANITIZER_INTERCEPT_SYSMSG
3428INTERCEPTOR(int, msgsnd, int msqid, const void *msgp, SIZE_T msgsz,
3429 int msgflg) {
3430 void *ctx;
3431 COMMON_INTERCEPTOR_ENTER(ctx, msgsnd, msqid, msgp, msgsz, msgflg);
3432 if (msgp)
3433 COMMON_INTERCEPTOR_READ_RANGE(ctx, msgp, sizeof(long) + msgsz);
3434 int res = COMMON_INTERCEPTOR_BLOCK_REAL(msgsnd)(msqid, msgp, msgsz, msgflg);
3435 return res;
3436}
3437
3438INTERCEPTOR(SSIZE_T, msgrcv, int msqid, void *msgp, SIZE_T msgsz,
3439 long msgtyp, int msgflg) {
3440 void *ctx;
3441 COMMON_INTERCEPTOR_ENTER(ctx, msgrcv, msqid, msgp, msgsz, msgtyp, msgflg);
3442 SSIZE_T len =
3443 COMMON_INTERCEPTOR_BLOCK_REAL(msgrcv)(msqid, msgp, msgsz, msgtyp, msgflg);
3444 if (len != -1)
3445 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msgp, sizeof(long) + len);
3446 return len;
3447}
3448
3449#define INIT_SYSMSG \
3450 COMMON_INTERCEPT_FUNCTION(msgsnd); \
3451 COMMON_INTERCEPT_FUNCTION(msgrcv);
3452#else
3453#define INIT_SYSMSG
3454#endif
3455
3456#if SANITIZER_INTERCEPT_GETPEERNAME
3457INTERCEPTOR(int, getpeername, int sockfd, void *addr, unsigned *addrlen) {
3458 void *ctx;
3459 COMMON_INTERCEPTOR_ENTER(ctx, getpeername, sockfd, addr, addrlen);
3460 unsigned addr_sz;
3461 if (addrlen) {
3462 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
3463 addr_sz = *addrlen;
3464 }
3465 // FIXME: under ASan the call below may write to freed memory and corrupt
3466 // its metadata. See
3467 // https://github.com/google/sanitizers/issues/321.
3468 int res = REAL(getpeername)(sockfd, addr, addrlen);
3469 if (!res && addr && addrlen) {
3470 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen));
3471 }
3472 return res;
3473}
3474#define INIT_GETPEERNAME COMMON_INTERCEPT_FUNCTION(getpeername);
3475#else
3476#define INIT_GETPEERNAME
3477#endif
3478
3479#if SANITIZER_INTERCEPT_SYSINFO
3480INTERCEPTOR(int, sysinfo, void *info) {
3481 void *ctx;
3482 // FIXME: under ASan the call below may write to freed memory and corrupt
3483 // its metadata. See
3484 // https://github.com/google/sanitizers/issues/321.
3485 COMMON_INTERCEPTOR_ENTER(ctx, sysinfo, info);
3486 int res = REAL(sysinfo)(info);
3487 if (!res && info)
3488 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, struct_sysinfo_sz);
3489 return res;
3490}
3491#define INIT_SYSINFO COMMON_INTERCEPT_FUNCTION(sysinfo);
3492#else
3493#define INIT_SYSINFO
3494#endif
3495
3496#if SANITIZER_INTERCEPT_READDIR
3497INTERCEPTOR(__sanitizer_dirent *, opendir, const char *path) {
3498 void *ctx;
3499 COMMON_INTERCEPTOR_ENTER(ctx, opendir, path);
3500 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
3501 __sanitizer_dirent *res = REAL(opendir)(path);
3502 if (res)
3503 COMMON_INTERCEPTOR_DIR_ACQUIRE(ctx, path);
3504 return res;
3505}
3506
3507INTERCEPTOR(__sanitizer_dirent *, readdir, void *dirp) {
3508 void *ctx;
3509 COMMON_INTERCEPTOR_ENTER(ctx, readdir, dirp);
3510 // FIXME: under ASan the call below may write to freed memory and corrupt
3511 // its metadata. See
3512 // https://github.com/google/sanitizers/issues/321.
3513 __sanitizer_dirent *res = REAL(readdir)(dirp);
3514 if (res)
3515 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer_dirsiz(res));
3516 return res;
3517}
3518
3519INTERCEPTOR(int, readdir_r, void *dirp, __sanitizer_dirent *entry,
3520 __sanitizer_dirent **result) {
3521 void *ctx;
3522 COMMON_INTERCEPTOR_ENTER(ctx, readdir_r, dirp, entry, result);
3523 // FIXME: under ASan the call below may write to freed memory and corrupt
3524 // its metadata. See
3525 // https://github.com/google/sanitizers/issues/321.
3526 int res = REAL(readdir_r)(dirp, entry, result);
3527 if (!res) {
3528 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3529 if (*result)
3530 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, __sanitizer_dirsiz(*result));
3531 }
3532 return res;
3533}
3534
3535#define INIT_READDIR \
3536 COMMON_INTERCEPT_FUNCTION(opendir); \
3537 COMMON_INTERCEPT_FUNCTION(readdir); \
3538 COMMON_INTERCEPT_FUNCTION(readdir_r);
3539#else
3540#define INIT_READDIR
3541#endif
3542
3543#if SANITIZER_INTERCEPT_READDIR64
3544INTERCEPTOR(__sanitizer_dirent64 *, readdir64, void *dirp) {
3545 void *ctx;
3546 COMMON_INTERCEPTOR_ENTER(ctx, readdir64, dirp);
3547 // FIXME: under ASan the call below may write to freed memory and corrupt
3548 // its metadata. See
3549 // https://github.com/google/sanitizers/issues/321.
3550 __sanitizer_dirent64 *res = REAL(readdir64)(dirp);
3551 if (res)
3552 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer_dirsiz(res));
3553 return res;
3554}
3555
3556INTERCEPTOR(int, readdir64_r, void *dirp, __sanitizer_dirent64 *entry,
3557 __sanitizer_dirent64 **result) {
3558 void *ctx;
3559 COMMON_INTERCEPTOR_ENTER(ctx, readdir64_r, dirp, entry, result);
3560 // FIXME: under ASan the call below may write to freed memory and corrupt
3561 // its metadata. See
3562 // https://github.com/google/sanitizers/issues/321.
3563 int res = REAL(readdir64_r)(dirp, entry, result);
3564 if (!res) {
3565 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3566 if (*result)
3567 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, __sanitizer_dirsiz(*result));
3568 }
3569 return res;
3570}
3571#define INIT_READDIR64 \
3572 COMMON_INTERCEPT_FUNCTION(readdir64); \
3573 COMMON_INTERCEPT_FUNCTION(readdir64_r);
3574#else
3575#define INIT_READDIR64
3576#endif
3577
3578#if SANITIZER_INTERCEPT_PTRACE
3579INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) {
3580 void *ctx;
3581 COMMON_INTERCEPTOR_ENTER(ctx, ptrace, request, pid, addr, data);
3582 __sanitizer_iovec local_iovec;
3583
3584 void *data_arg = ptrace_data_arg(request, addr, data);
3585 if (data_arg) {
3586 if (request == ptrace_setregs) {
3587 COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg, struct_user_regs_struct_sz);
3588 } else if (request == ptrace_setfpregs) {
3589 COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg,
3590 struct_user_fpregs_struct_sz);
3591 } else if (request == ptrace_setfpxregs) {
3592 COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg,
3593 struct_user_fpxregs_struct_sz);
3594 } else if (request == ptrace_setvfpregs) {
3595 COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg,
3596 struct_user_vfpregs_struct_sz);
3597 } else if (request == ptrace_setsiginfo) {
3598 COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg, siginfo_t_sz);
3599
3600 // Some kernel might zero the iovec::iov_base in case of invalid
3601 // write access. In this case copy the invalid address for further
3602 // inspection.
3603 } else if (request == ptrace_setregset || request == ptrace_getregset) {
3604 __sanitizer_iovec *iovec = (__sanitizer_iovec *)data_arg;
3605 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec));
3606 local_iovec = *iovec;
3607 if (request == ptrace_setregset)
3608 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec->iov_base, iovec->iov_len);
3609 }
3610 }
3611
3612 // FIXME: under ASan the call below may write to freed memory and corrupt
3613 // its metadata. See
3614 // https://github.com/google/sanitizers/issues/321.
3615 uptr res = REAL(ptrace)(request, pid, addr, data);
3616
3617 if (!res && data_arg) {
3618 // Note that PEEK* requests assign different meaning to the return value.
3619 // This function does not handle them (nor does it need to).
3620 if (request == ptrace_getregs) {
3621 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, struct_user_regs_struct_sz);
3622 } else if (request == ptrace_getfpregs) {
3623 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg,
3624 struct_user_fpregs_struct_sz);
3625 } else if (request == ptrace_getfpxregs) {
3626 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg,
3627 struct_user_fpxregs_struct_sz);
3628 } else if (request == ptrace_getvfpregs) {
3629 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg,
3630 struct_user_vfpregs_struct_sz);
3631 } else if (request == ptrace_getsiginfo) {
3632 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, siginfo_t_sz);
3633 } else if (request == ptrace_geteventmsg) {
3634 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, sizeof(unsigned long));
3635 } else if (request == ptrace_getregset) {
3636 __sanitizer_iovec *iovec = (__sanitizer_iovec *)data_arg;
3637 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec, sizeof(*iovec));
3638 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, local_iovec.iov_base,
3639 local_iovec.iov_len);
3640 }
3641 }
3642 return res;
3643}
3644
3645#define INIT_PTRACE COMMON_INTERCEPT_FUNCTION(ptrace);
3646#else
3647#define INIT_PTRACE
3648#endif
3649
3650#if SANITIZER_INTERCEPT_SETLOCALE
3651static void unpoison_ctype_arrays(void *ctx) {
3652#if SANITIZER_NETBSD
3653 // These arrays contain 256 regular elements in unsigned char range + 1 EOF
3654 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _ctype_tab_, 257 * sizeof(short));
3655 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _toupper_tab_, 257 * sizeof(short));
3656 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _tolower_tab_, 257 * sizeof(short));
3657#endif
3658}
3659
3660INTERCEPTOR(char *, setlocale, int category, char *locale) {
3661 void *ctx;
3662 COMMON_INTERCEPTOR_ENTER(ctx, setlocale, category, locale);
3663 if (locale)
3664 COMMON_INTERCEPTOR_READ_RANGE(ctx, locale, internal_strlen(locale) + 1);
3665 char *res = REAL(setlocale)(category, locale);
3666 if (res) {
3667 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
3668 unpoison_ctype_arrays(ctx);
3669 }
3670 return res;
3671}
3672
3673#define INIT_SETLOCALE COMMON_INTERCEPT_FUNCTION(setlocale);
3674#else
3675#define INIT_SETLOCALE
3676#endif
3677
3678#if SANITIZER_INTERCEPT_GETCWD
3679INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) {
3680 void *ctx;
3681 COMMON_INTERCEPTOR_ENTER(ctx, getcwd, buf, size);
3682 // FIXME: under ASan the call below may write to freed memory and corrupt
3683 // its metadata. See
3684 // https://github.com/google/sanitizers/issues/321.
3685 char *res = REAL(getcwd)(buf, size);
3686 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
3687 return res;
3688}
3689#define INIT_GETCWD COMMON_INTERCEPT_FUNCTION(getcwd);
3690#else
3691#define INIT_GETCWD
3692#endif
3693
3694#if SANITIZER_INTERCEPT_GET_CURRENT_DIR_NAME
3695INTERCEPTOR(char *, get_current_dir_name, int fake) {
3696 void *ctx;
3697 COMMON_INTERCEPTOR_ENTER(ctx, get_current_dir_name, fake);
3698 // FIXME: under ASan the call below may write to freed memory and corrupt
3699 // its metadata. See
3700 // https://github.com/google/sanitizers/issues/321.
3701 char *res = REAL(get_current_dir_name)(fake);
3702 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
3703 return res;
3704}
3705
3706#define INIT_GET_CURRENT_DIR_NAME \
3707 COMMON_INTERCEPT_FUNCTION(get_current_dir_name);
3708#else
3709#define INIT_GET_CURRENT_DIR_NAME
3710#endif
3711
3712UNUSED static inline void FixRealStrtolEndptr(const char *nptr, char **endptr) {
3713 CHECK(endptr);
3714 if (nptr == *endptr) {
3715 // No digits were found at strtol call, we need to find out the last
3716 // symbol accessed by strtoll on our own.
3717 // We get this symbol by skipping leading blanks and optional +/- sign.
3718 while (IsSpace(*nptr)) nptr++;
3719 if (*nptr == '+' || *nptr == '-') nptr++;
3720 *endptr = const_cast<char *>(nptr);
3721 }
3722 CHECK(*endptr >= nptr);
3723}
3724
3725UNUSED static inline void StrtolFixAndCheck(void *ctx, const char *nptr,
3726 char **endptr, char *real_endptr, int base) {
3727 if (endptr) {
3728 *endptr = real_endptr;
3729 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr));
3730 }
3731 // If base has unsupported value, strtol can exit with EINVAL
3732 // without reading any characters. So do additional checks only
3733 // if base is valid.
3734 bool is_valid_base = (base == 0) || (2 <= base && base <= 36);
3735 if (is_valid_base) {
3736 FixRealStrtolEndptr(nptr, &real_endptr);
3737 }
3738 COMMON_INTERCEPTOR_READ_STRING(ctx, nptr, is_valid_base ?
3739 (real_endptr - nptr) + 1 : 0);
3740}
3741
3742#if SANITIZER_INTERCEPT_STRTOIMAX
3743template <typename Fn>
3744static ALWAYS_INLINE auto StrtoimaxImpl(void *ctx, Fn real, const char *nptr,
3745 char **endptr, int base)
3746 -> decltype(real(nullptr, nullptr, 0)) {
3747 char *real_endptr;
3748 auto res = real(nptr, &real_endptr, base);
3749 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base);
3750 return res;
3751}
3752
3753INTERCEPTOR(INTMAX_T, strtoimax, const char *nptr, char **endptr, int base) {
3754 void *ctx;
3755 COMMON_INTERCEPTOR_ENTER(ctx, strtoimax, nptr, endptr, base);
3756 return StrtoimaxImpl(ctx, REAL(strtoimax), nptr, endptr, base);
3757}
3758INTERCEPTOR(UINTMAX_T, strtoumax, const char *nptr, char **endptr, int base) {
3759 void *ctx;
3760 COMMON_INTERCEPTOR_ENTER(ctx, strtoumax, nptr, endptr, base);
3761 return StrtoimaxImpl(ctx, REAL(strtoumax), nptr, endptr, base);
3762}
3763
3764#define INIT_STRTOIMAX \
3765 COMMON_INTERCEPT_FUNCTION(strtoimax); \
3766 COMMON_INTERCEPT_FUNCTION(strtoumax);
3767#else
3768#define INIT_STRTOIMAX
3769#endif
3770
3771#if SANITIZER_INTERCEPT_STRTOIMAX && SANITIZER_GLIBC
3772INTERCEPTOR(INTMAX_T, __isoc23_strtoimax, const char *nptr, char **endptr, int base) {
3773 void *ctx;
3774 COMMON_INTERCEPTOR_ENTER(ctx, __isoc23_strtoimax, nptr, endptr, base);
3775 return StrtoimaxImpl(ctx, REAL(__isoc23_strtoimax), nptr, endptr, base);
3776}
3777INTERCEPTOR(UINTMAX_T, __isoc23_strtoumax, const char *nptr, char **endptr, int base) {
3778 void *ctx;
3779 COMMON_INTERCEPTOR_ENTER(ctx, __isoc23_strtoumax, nptr, endptr, base);
3780 return StrtoimaxImpl(ctx, REAL(__isoc23_strtoumax), nptr, endptr, base);
3781}
3782
3783# define INIT_STRTOIMAX_C23 \
3784 COMMON_INTERCEPT_FUNCTION(__isoc23_strtoimax); \
3785 COMMON_INTERCEPT_FUNCTION(__isoc23_strtoumax);
3786#else
3787# define INIT_STRTOIMAX_C23
3788#endif
3789
3790#if SANITIZER_INTERCEPT_MBSTOWCS
3791INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T len) {
3792 void *ctx;
3793 COMMON_INTERCEPTOR_ENTER(ctx, mbstowcs, dest, src, len);
3794 // FIXME: under ASan the call below may write to freed memory and corrupt
3795 // its metadata. See
3796 // https://github.com/google/sanitizers/issues/321.
3797 SIZE_T res = REAL(mbstowcs)(dest, src, len);
3798 if (res != (SIZE_T) - 1 && dest) {
3799 SIZE_T write_cnt = res + (res < len);
3800 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
3801 }
3802 return res;
3803}
3804
3805INTERCEPTOR(SIZE_T, mbsrtowcs, wchar_t *dest, const char **src, SIZE_T len,
3806 void *ps) {
3807 void *ctx;
3808 COMMON_INTERCEPTOR_ENTER(ctx, mbsrtowcs, dest, src, len, ps);
3809 if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
3810 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3811 // FIXME: under ASan the call below may write to freed memory and corrupt
3812 // its metadata. See
3813 // https://github.com/google/sanitizers/issues/321.
3814 SIZE_T res = REAL(mbsrtowcs)(dest, src, len, ps);
3815 if (res != (SIZE_T)(-1) && dest && src) {
3816 // This function, and several others, may or may not write the terminating
3817 // \0 character. They write it iff they clear *src.
3818 SIZE_T write_cnt = res + !*src;
3819 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
3820 }
3821 return res;
3822}
3823
3824#define INIT_MBSTOWCS \
3825 COMMON_INTERCEPT_FUNCTION(mbstowcs); \
3826 COMMON_INTERCEPT_FUNCTION(mbsrtowcs);
3827#else
3828#define INIT_MBSTOWCS
3829#endif
3830
3831#if SANITIZER_INTERCEPT_MBSNRTOWCS
3832INTERCEPTOR(SIZE_T, mbsnrtowcs, wchar_t *dest, const char **src, SIZE_T nms,
3833 SIZE_T len, void *ps) {
3834 void *ctx;
3835 COMMON_INTERCEPTOR_ENTER(ctx, mbsnrtowcs, dest, src, nms, len, ps);
3836 if (src) {
3837 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
3838 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
3839 }
3840 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3841 // FIXME: under ASan the call below may write to freed memory and corrupt
3842 // its metadata. See
3843 // https://github.com/google/sanitizers/issues/321.
3844 SIZE_T res = REAL(mbsnrtowcs)(dest, src, nms, len, ps);
3845 if (res != (SIZE_T)(-1) && dest && src) {
3846 SIZE_T write_cnt = res + !*src;
3847 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
3848 }
3849 return res;
3850}
3851
3852#define INIT_MBSNRTOWCS COMMON_INTERCEPT_FUNCTION(mbsnrtowcs);
3853#else
3854#define INIT_MBSNRTOWCS
3855#endif
3856
3857#if SANITIZER_INTERCEPT_WCSTOMBS
3858INTERCEPTOR(SIZE_T, wcstombs, char *dest, const wchar_t *src, SIZE_T len) {
3859 void *ctx;
3860 COMMON_INTERCEPTOR_ENTER(ctx, wcstombs, dest, src, len);
3861 // FIXME: under ASan the call below may write to freed memory and corrupt
3862 // its metadata. See
3863 // https://github.com/google/sanitizers/issues/321.
3864 SIZE_T res = REAL(wcstombs)(dest, src, len);
3865 if (res != (SIZE_T) - 1 && dest) {
3866 SIZE_T write_cnt = res + (res < len);
3867 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
3868 }
3869 return res;
3870}
3871
3872INTERCEPTOR(SIZE_T, wcsrtombs, char *dest, const wchar_t **src, SIZE_T len,
3873 void *ps) {
3874 void *ctx;
3875 COMMON_INTERCEPTOR_ENTER(ctx, wcsrtombs, dest, src, len, ps);
3876 if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
3877 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3878 // FIXME: under ASan the call below may write to freed memory and corrupt
3879 // its metadata. See
3880 // https://github.com/google/sanitizers/issues/321.
3881 SIZE_T res = REAL(wcsrtombs)(dest, src, len, ps);
3882 if (res != (SIZE_T) - 1 && dest && src) {
3883 SIZE_T write_cnt = res + !*src;
3884 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
3885 }
3886 return res;
3887}
3888
3889#define INIT_WCSTOMBS \
3890 COMMON_INTERCEPT_FUNCTION(wcstombs); \
3891 COMMON_INTERCEPT_FUNCTION(wcsrtombs);
3892#else
3893#define INIT_WCSTOMBS
3894#endif
3895
3896#if SANITIZER_INTERCEPT_WCSNRTOMBS
3897INTERCEPTOR(SIZE_T, wcsnrtombs, char *dest, const wchar_t **src, SIZE_T nms,
3898 SIZE_T len, void *ps) {
3899 void *ctx;
3900 COMMON_INTERCEPTOR_ENTER(ctx, wcsnrtombs, dest, src, nms, len, ps);
3901 if (src) {
3902 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
3903 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
3904 }
3905 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3906 // FIXME: under ASan the call below may write to freed memory and corrupt
3907 // its metadata. See
3908 // https://github.com/google/sanitizers/issues/321.
3909 SIZE_T res = REAL(wcsnrtombs)(dest, src, nms, len, ps);
3910 if (res != ((SIZE_T)-1) && dest && src) {
3911 SIZE_T write_cnt = res + !*src;
3912 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
3913 }
3914 return res;
3915}
3916
3917#define INIT_WCSNRTOMBS COMMON_INTERCEPT_FUNCTION(wcsnrtombs);
3918#else
3919#define INIT_WCSNRTOMBS
3920#endif
3921
3922
3923#if SANITIZER_INTERCEPT_WCRTOMB
3924INTERCEPTOR(SIZE_T, wcrtomb, char *dest, wchar_t src, void *ps) {
3925 void *ctx;
3926 COMMON_INTERCEPTOR_ENTER(ctx, wcrtomb, dest, src, ps);
3927 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3928
3929 if (!dest)
3930 return REAL(wcrtomb)(dest, src, ps);
3931
3932 char local_dest[32];
3933 SIZE_T res = REAL(wcrtomb)(local_dest, src, ps);
3934 if (res != ((SIZE_T)-1)) {
3935 CHECK_LE(res, sizeof(local_dest));
3936 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, res);
3937 internal_memcpy(dest, local_dest, res);
3938 }
3939 return res;
3940}
3941
3942#define INIT_WCRTOMB COMMON_INTERCEPT_FUNCTION(wcrtomb);
3943#else
3944#define INIT_WCRTOMB
3945#endif
3946
3947#if SANITIZER_INTERCEPT_WCTOMB
3948INTERCEPTOR(int, wctomb, char *dest, wchar_t src) {
3949 void *ctx;
3950 COMMON_INTERCEPTOR_ENTER(ctx, wctomb, dest, src);
3951 if (!dest)
3952 return REAL(wctomb)(dest, src);
3953
3954 char local_dest[32];
3955 int res = REAL(wctomb)(local_dest, src);
3956 if (res != -1) {
3957 CHECK_LE(res, sizeof(local_dest));
3958 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, res);
3959 internal_memcpy(dest, local_dest, res);
3960 }
3961 return res;
3962}
3963
3964#define INIT_WCTOMB COMMON_INTERCEPT_FUNCTION(wctomb);
3965#else
3966#define INIT_WCTOMB
3967#endif
3968
3969#if SANITIZER_INTERCEPT_TCGETATTR
3970INTERCEPTOR(int, tcgetattr, int fd, void *termios_p) {
3971 void *ctx;
3972 COMMON_INTERCEPTOR_ENTER(ctx, tcgetattr, fd, termios_p);
3973 // FIXME: under ASan the call below may write to freed memory and corrupt
3974 // its metadata. See
3975 // https://github.com/google/sanitizers/issues/321.
3976 int res = REAL(tcgetattr)(fd, termios_p);
3977 if (!res && termios_p)
3978 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, termios_p, struct_termios_sz);
3979 return res;
3980}
3981
3982#define INIT_TCGETATTR COMMON_INTERCEPT_FUNCTION(tcgetattr);
3983#else
3984#define INIT_TCGETATTR
3985#endif
3986
3987#if SANITIZER_INTERCEPT_REALPATH
3988INTERCEPTOR(char *, realpath, const char *path, char *resolved_path) {
3989 void *ctx;
3990 COMMON_INTERCEPTOR_ENTER(ctx, realpath, path, resolved_path);
3991 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
3992
3993 // Workaround a bug in glibc where dlsym(RTLD_NEXT, ...) returns the oldest
3994 // version of a versioned symbol. For realpath(), this gives us something
3995 // (called __old_realpath) that does not handle NULL in the second argument.
3996 // Handle it as part of the interceptor.
3997 char *allocated_path = nullptr;
3998 if (!resolved_path)
3999 allocated_path = resolved_path = (char *)WRAP(malloc)(path_max + 1);
4000
4001 char *res = REAL(realpath)(path, resolved_path);
4002 if (allocated_path && !res)
4003 WRAP(free)(allocated_path);
4004 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
4005 return res;
4006}
4007# define INIT_REALPATH COMMON_INTERCEPT_FUNCTION(realpath);
4008#else
4009#define INIT_REALPATH
4010#endif
4011
4012#if SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME
4013INTERCEPTOR(char *, canonicalize_file_name, const char *path) {
4014 void *ctx;
4015 COMMON_INTERCEPTOR_ENTER(ctx, canonicalize_file_name, path);
4016 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4017 char *res = REAL(canonicalize_file_name)(path);
4018 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
4019 return res;
4020}
4021#define INIT_CANONICALIZE_FILE_NAME \
4022 COMMON_INTERCEPT_FUNCTION(canonicalize_file_name);
4023#else
4024#define INIT_CANONICALIZE_FILE_NAME
4025#endif
4026
4027#if SANITIZER_INTERCEPT_CONFSTR
4028INTERCEPTOR(SIZE_T, confstr, int name, char *buf, SIZE_T len) {
4029 void *ctx;
4030 COMMON_INTERCEPTOR_ENTER(ctx, confstr, name, buf, len);
4031 // FIXME: under ASan the call below may write to freed memory and corrupt
4032 // its metadata. See
4033 // https://github.com/google/sanitizers/issues/321.
4034 SIZE_T res = REAL(confstr)(name, buf, len);
4035 if (buf && res)
4036 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res < len ? res : len);
4037 return res;
4038}
4039#define INIT_CONFSTR COMMON_INTERCEPT_FUNCTION(confstr);
4040#else
4041#define INIT_CONFSTR
4042#endif
4043
4044#if SANITIZER_INTERCEPT_SCHED_GETAFFINITY
4045INTERCEPTOR(int, sched_getaffinity, int pid, SIZE_T cpusetsize, void *mask) {
4046 void *ctx;
4047 COMMON_INTERCEPTOR_ENTER(ctx, sched_getaffinity, pid, cpusetsize, mask);
4048 // FIXME: under ASan the call below may write to freed memory and corrupt
4049 // its metadata. See
4050 // https://github.com/google/sanitizers/issues/321.
4051 int res = REAL(sched_getaffinity)(pid, cpusetsize, mask);
4052 if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize);
4053 return res;
4054}
4055#define INIT_SCHED_GETAFFINITY COMMON_INTERCEPT_FUNCTION(sched_getaffinity);
4056#else
4057#define INIT_SCHED_GETAFFINITY
4058#endif
4059
4060#if SANITIZER_INTERCEPT_SCHED_GETPARAM
4061INTERCEPTOR(int, sched_getparam, int pid, void *param) {
4062 void *ctx;
4063 COMMON_INTERCEPTOR_ENTER(ctx, sched_getparam, pid, param);
4064 int res = REAL(sched_getparam)(pid, param);
4065 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, struct_sched_param_sz);
4066 return res;
4067}
4068#define INIT_SCHED_GETPARAM COMMON_INTERCEPT_FUNCTION(sched_getparam);
4069#else
4070#define INIT_SCHED_GETPARAM
4071#endif
4072
4073#if SANITIZER_INTERCEPT_STRERROR
4074INTERCEPTOR(char *, strerror, int errnum) {
4075 void *ctx;
4076 COMMON_INTERCEPTOR_ENTER(ctx, strerror, errnum);
4077 COMMON_INTERCEPTOR_STRERROR();
4078 char *res = REAL(strerror)(errnum);
4079 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
4080 return res;
4081}
4082#define INIT_STRERROR COMMON_INTERCEPT_FUNCTION(strerror);
4083#else
4084#define INIT_STRERROR
4085#endif
4086
4087#if SANITIZER_INTERCEPT_STRERROR_R
4088// There are 2 versions of strerror_r:
4089// * POSIX version returns 0 on success, negative error code on failure,
4090// writes message to buf.
4091// * GNU version returns message pointer, which points to either buf or some
4092// static storage.
4093#if ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE) || \
4094 SANITIZER_APPLE || SANITIZER_ANDROID || SANITIZER_NETBSD || \
4095 SANITIZER_FREEBSD
4096// POSIX version. Spec is not clear on whether buf is NULL-terminated.
4097// At least on OSX, buf contents are valid even when the call fails.
4098INTERCEPTOR(int, strerror_r, int errnum, char *buf, SIZE_T buflen) {
4099 void *ctx;
4100 COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen);
4101 // FIXME: under ASan the call below may write to freed memory and corrupt
4102 // its metadata. See
4103 // https://github.com/google/sanitizers/issues/321.
4104 int res = REAL(strerror_r)(errnum, buf, buflen);
4105
4106 SIZE_T sz = internal_strnlen(buf, buflen);
4107 if (sz < buflen) ++sz;
4108 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz);
4109 return res;
4110}
4111#else
4112// GNU version.
4113INTERCEPTOR(char *, strerror_r, int errnum, char *buf, SIZE_T buflen) {
4114 void *ctx;
4115 COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen);
4116 // FIXME: under ASan the call below may write to freed memory and corrupt
4117 // its metadata. See
4118 // https://github.com/google/sanitizers/issues/321.
4119 char *res = REAL(strerror_r)(errnum, buf, buflen);
4120 if (res == buf)
4121 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
4122 else
4123 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
4124 return res;
4125}
4126#endif //(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE ||
4127 //SANITIZER_APPLE
4128#define INIT_STRERROR_R COMMON_INTERCEPT_FUNCTION(strerror_r);
4129#else
4130#define INIT_STRERROR_R
4131#endif
4132
4133#if SANITIZER_INTERCEPT_XPG_STRERROR_R
4134INTERCEPTOR(int, __xpg_strerror_r, int errnum, char *buf, SIZE_T buflen) {
4135 void *ctx;
4136 COMMON_INTERCEPTOR_ENTER(ctx, __xpg_strerror_r, errnum, buf, buflen);
4137 // FIXME: under ASan the call below may write to freed memory and corrupt
4138 // its metadata. See
4139 // https://github.com/google/sanitizers/issues/321.
4140 int res = REAL(__xpg_strerror_r)(errnum, buf, buflen);
4141 // This version always returns a null-terminated string.
4142 if (buf && buflen)
4143 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1);
4144 return res;
4145}
4146#define INIT_XPG_STRERROR_R COMMON_INTERCEPT_FUNCTION(__xpg_strerror_r);
4147#else
4148#define INIT_XPG_STRERROR_R
4149#endif
4150
4151#if SANITIZER_INTERCEPT_SCANDIR
4152typedef int (*scandir_filter_f)(const struct __sanitizer_dirent *);
4153typedef int (*scandir_compar_f)(const struct __sanitizer_dirent **,
4154 const struct __sanitizer_dirent **);
4155
4156static THREADLOCAL scandir_filter_f scandir_filter;
4157static THREADLOCAL scandir_compar_f scandir_compar;
4158
4159static int wrapped_scandir_filter(const struct __sanitizer_dirent *dir) {
4160 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
4161 COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, __sanitizer_dirsiz(dir));
4162 return scandir_filter(dir);
4163}
4164
4165static int wrapped_scandir_compar(const struct __sanitizer_dirent **a,
4166 const struct __sanitizer_dirent **b) {
4167 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
4168 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a));
4169 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, __sanitizer_dirsiz(*a));
4170 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b));
4171 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, __sanitizer_dirsiz(*b));
4172 return scandir_compar(a, b);
4173}
4174
4175INTERCEPTOR(int, scandir, char *dirp, __sanitizer_dirent ***namelist,
4176 scandir_filter_f filter, scandir_compar_f compar) {
4177 void *ctx;
4178 COMMON_INTERCEPTOR_ENTER(ctx, scandir, dirp, namelist, filter, compar);
4179 if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, internal_strlen(dirp) + 1);
4180 scandir_filter = filter;
4181 scandir_compar = compar;
4182 // FIXME: under ASan the call below may write to freed memory and corrupt
4183 // its metadata. See
4184 // https://github.com/google/sanitizers/issues/321.
4185 int res = REAL(scandir)(dirp, namelist,
4186 filter ? wrapped_scandir_filter : nullptr,
4187 compar ? wrapped_scandir_compar : nullptr);
4188 scandir_filter = nullptr;
4189 scandir_compar = nullptr;
4190 if (namelist && res > 0) {
4191 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist));
4192 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res);
4193 for (int i = 0; i < res; ++i)
4194 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i],
4195 __sanitizer_dirsiz((*namelist)[i]));
4196 }
4197 return res;
4198}
4199#define INIT_SCANDIR COMMON_INTERCEPT_FUNCTION(scandir);
4200#else
4201#define INIT_SCANDIR
4202#endif
4203
4204#if SANITIZER_INTERCEPT_SCANDIR64
4205typedef int (*scandir64_filter_f)(const struct __sanitizer_dirent64 *);
4206typedef int (*scandir64_compar_f)(const struct __sanitizer_dirent64 **,
4207 const struct __sanitizer_dirent64 **);
4208
4209static THREADLOCAL scandir64_filter_f scandir64_filter;
4210static THREADLOCAL scandir64_compar_f scandir64_compar;
4211
4212static int wrapped_scandir64_filter(const struct __sanitizer_dirent64 *dir) {
4213 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
4214 COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, __sanitizer_dirsiz(dir));
4215 return scandir64_filter(dir);
4216}
4217
4218static int wrapped_scandir64_compar(const struct __sanitizer_dirent64 **a,
4219 const struct __sanitizer_dirent64 **b) {
4220 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
4221 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a));
4222 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, __sanitizer_dirsiz(*a));
4223 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b));
4224 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, __sanitizer_dirsiz(*b));
4225 return scandir64_compar(a, b);
4226}
4227
4228INTERCEPTOR(int, scandir64, char *dirp, __sanitizer_dirent64 ***namelist,
4229 scandir64_filter_f filter, scandir64_compar_f compar) {
4230 void *ctx;
4231 COMMON_INTERCEPTOR_ENTER(ctx, scandir64, dirp, namelist, filter, compar);
4232 if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, internal_strlen(dirp) + 1);
4233 scandir64_filter = filter;
4234 scandir64_compar = compar;
4235 // FIXME: under ASan the call below may write to freed memory and corrupt
4236 // its metadata. See
4237 // https://github.com/google/sanitizers/issues/321.
4238 int res =
4239 REAL(scandir64)(dirp, namelist,
4240 filter ? wrapped_scandir64_filter : nullptr,
4241 compar ? wrapped_scandir64_compar : nullptr);
4242 scandir64_filter = nullptr;
4243 scandir64_compar = nullptr;
4244 if (namelist && res > 0) {
4245 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist));
4246 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res);
4247 for (int i = 0; i < res; ++i)
4248 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i],
4249 __sanitizer_dirsiz((*namelist)[i]));
4250 }
4251 return res;
4252}
4253#define INIT_SCANDIR64 COMMON_INTERCEPT_FUNCTION(scandir64);
4254#else
4255#define INIT_SCANDIR64
4256#endif
4257
4258#if SANITIZER_INTERCEPT_GETGROUPS
4259INTERCEPTOR(int, getgroups, int size, u32 *lst) {
4260 void *ctx;
4261 COMMON_INTERCEPTOR_ENTER(ctx, getgroups, size, lst);
4262 // FIXME: under ASan the call below may write to freed memory and corrupt
4263 // its metadata. See
4264 // https://github.com/google/sanitizers/issues/321.
4265 int res = REAL(getgroups)(size, lst);
4266 if (res >= 0 && lst && size > 0)
4267 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lst, res * sizeof(*lst));
4268 return res;
4269}
4270#define INIT_GETGROUPS COMMON_INTERCEPT_FUNCTION(getgroups);
4271#else
4272#define INIT_GETGROUPS
4273#endif
4274
4275#if SANITIZER_INTERCEPT_POLL
4276static void read_pollfd(void *ctx, __sanitizer_pollfd *fds,
4277 __sanitizer_nfds_t nfds) {
4278 for (unsigned i = 0; i < nfds; ++i) {
4279 COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].fd, sizeof(fds[i].fd));
4280 COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].events, sizeof(fds[i].events));
4281 }
4282}
4283
4284static void write_pollfd(void *ctx, __sanitizer_pollfd *fds,
4285 __sanitizer_nfds_t nfds) {
4286 for (unsigned i = 0; i < nfds; ++i)
4287 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &fds[i].revents,
4288 sizeof(fds[i].revents));
4289}
4290
4291INTERCEPTOR(int, poll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
4292 int timeout) {
4293 void *ctx;
4294 COMMON_INTERCEPTOR_ENTER(ctx, poll, fds, nfds, timeout);
4295 if (fds && nfds) read_pollfd(ctx, fds, nfds);
4296 int res = COMMON_INTERCEPTOR_BLOCK_REAL(poll)(fds, nfds, timeout);
4297 if (fds && nfds) write_pollfd(ctx, fds, nfds);
4298 return res;
4299}
4300#define INIT_POLL COMMON_INTERCEPT_FUNCTION(poll);
4301#else
4302#define INIT_POLL
4303#endif
4304
4305#if SANITIZER_INTERCEPT_PPOLL
4306INTERCEPTOR(int, ppoll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
4307 void *timeout_ts, __sanitizer_sigset_t *sigmask) {
4308 void *ctx;
4309 COMMON_INTERCEPTOR_ENTER(ctx, ppoll, fds, nfds, timeout_ts, sigmask);
4310 if (fds && nfds) read_pollfd(ctx, fds, nfds);
4311 if (timeout_ts)
4312 COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout_ts, struct_timespec_sz);
4313 if (sigmask) COMMON_INTERCEPTOR_READ_RANGE(ctx, sigmask, sizeof(*sigmask));
4314 int res =
4315 COMMON_INTERCEPTOR_BLOCK_REAL(ppoll)(fds, nfds, timeout_ts, sigmask);
4316 if (fds && nfds) write_pollfd(ctx, fds, nfds);
4317 return res;
4318}
4319#define INIT_PPOLL COMMON_INTERCEPT_FUNCTION(ppoll);
4320#else
4321#define INIT_PPOLL
4322#endif
4323
4324#if SANITIZER_INTERCEPT_WORDEXP
4325INTERCEPTOR(int, wordexp, char *s, __sanitizer_wordexp_t *p, int flags) {
4326 void *ctx;
4327 COMMON_INTERCEPTOR_ENTER(ctx, wordexp, s, p, flags);
4328 if (s) COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1);
4329 // FIXME: under ASan the call below may write to freed memory and corrupt
4330 // its metadata. See
4331 // https://github.com/google/sanitizers/issues/321.
4332 int res = REAL(wordexp)(s, p, flags);
4333 if (!res && p) {
4334 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
4335 uptr we_wordc =
4336 ((flags & wordexp_wrde_dooffs) ? p->we_offs : 0) + p->we_wordc;
4337 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->we_wordv,
4338 sizeof(*p->we_wordv) * (we_wordc + 1));
4339 for (uptr i = 0; i < we_wordc; ++i) {
4340 char *w = p->we_wordv[i];
4341 if (w) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, w, internal_strlen(w) + 1);
4342 }
4343 }
4344 return res;
4345}
4346#define INIT_WORDEXP COMMON_INTERCEPT_FUNCTION(wordexp);
4347#else
4348#define INIT_WORDEXP
4349#endif
4350
4351#if SANITIZER_INTERCEPT_SIGWAIT
4352INTERCEPTOR(int, sigwait, __sanitizer_sigset_t *set, int *sig) {
4353 void *ctx;
4354 COMMON_INTERCEPTOR_ENTER(ctx, sigwait, set, sig);
4355 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4356 // FIXME: under ASan the call below may write to freed memory and corrupt
4357 // its metadata. See
4358 // https://github.com/google/sanitizers/issues/321.
4359 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigwait)(set, sig);
4360 if (!res && sig) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sig, sizeof(*sig));
4361 return res;
4362}
4363#define INIT_SIGWAIT COMMON_INTERCEPT_FUNCTION(sigwait);
4364#else
4365#define INIT_SIGWAIT
4366#endif
4367
4368#if SANITIZER_INTERCEPT_SIGWAITINFO
4369INTERCEPTOR(int, sigwaitinfo, __sanitizer_sigset_t *set, void *info) {
4370 void *ctx;
4371 COMMON_INTERCEPTOR_ENTER(ctx, sigwaitinfo, set, info);
4372 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4373 // FIXME: under ASan the call below may write to freed memory and corrupt
4374 // its metadata. See
4375 // https://github.com/google/sanitizers/issues/321.
4376 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigwaitinfo)(set, info);
4377 if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz);
4378 return res;
4379}
4380#define INIT_SIGWAITINFO COMMON_INTERCEPT_FUNCTION(sigwaitinfo);
4381#else
4382#define INIT_SIGWAITINFO
4383#endif
4384
4385#if SANITIZER_INTERCEPT_SIGTIMEDWAIT
4386INTERCEPTOR(int, sigtimedwait, __sanitizer_sigset_t *set, void *info,
4387 void *timeout) {
4388 void *ctx;
4389 COMMON_INTERCEPTOR_ENTER(ctx, sigtimedwait, set, info, timeout);
4390 if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz);
4391 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4392 // FIXME: under ASan the call below may write to freed memory and corrupt
4393 // its metadata. See
4394 // https://github.com/google/sanitizers/issues/321.
4395 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigtimedwait)(set, info, timeout);
4396 if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz);
4397 return res;
4398}
4399#define INIT_SIGTIMEDWAIT COMMON_INTERCEPT_FUNCTION(sigtimedwait);
4400#else
4401#define INIT_SIGTIMEDWAIT
4402#endif
4403
4404#if SANITIZER_INTERCEPT_SIGSETOPS
4405INTERCEPTOR(int, sigemptyset, __sanitizer_sigset_t *set) {
4406 void *ctx;
4407 COMMON_INTERCEPTOR_ENTER(ctx, sigemptyset, set);
4408 // FIXME: under ASan the call below may write to freed memory and corrupt
4409 // its metadata. See
4410 // https://github.com/google/sanitizers/issues/321.
4411 int res = REAL(sigemptyset)(set);
4412 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
4413 return res;
4414}
4415
4416INTERCEPTOR(int, sigfillset, __sanitizer_sigset_t *set) {
4417 void *ctx;
4418 COMMON_INTERCEPTOR_ENTER(ctx, sigfillset, set);
4419 // FIXME: under ASan the call below may write to freed memory and corrupt
4420 // its metadata. See
4421 // https://github.com/google/sanitizers/issues/321.
4422 int res = REAL(sigfillset)(set);
4423 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
4424 return res;
4425}
4426#define INIT_SIGSETOPS \
4427 COMMON_INTERCEPT_FUNCTION(sigemptyset); \
4428 COMMON_INTERCEPT_FUNCTION(sigfillset);
4429#else
4430#define INIT_SIGSETOPS
4431#endif
4432
4433#if SANITIZER_INTERCEPT_SIGSET_LOGICOPS
4434INTERCEPTOR(int, sigandset, __sanitizer_sigset_t *dst,
4435 __sanitizer_sigset_t *src1, __sanitizer_sigset_t *src2) {
4436 void *ctx;
4437 COMMON_INTERCEPTOR_ENTER(ctx, sigandset, dst, src1, src2);
4438 if (src1)
4439 COMMON_INTERCEPTOR_READ_RANGE(ctx, src1, sizeof(*src1));
4440 if (src2)
4441 COMMON_INTERCEPTOR_READ_RANGE(ctx, src2, sizeof(*src2));
4442 int res = REAL(sigandset)(dst, src1, src2);
4443 if (!res && dst)
4444 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst));
4445 return res;
4446}
4447
4448INTERCEPTOR(int, sigorset, __sanitizer_sigset_t *dst,
4449 __sanitizer_sigset_t *src1, __sanitizer_sigset_t *src2) {
4450 void *ctx;
4451 COMMON_INTERCEPTOR_ENTER(ctx, sigorset, dst, src1, src2);
4452 if (src1)
4453 COMMON_INTERCEPTOR_READ_RANGE(ctx, src1, sizeof(*src1));
4454 if (src2)
4455 COMMON_INTERCEPTOR_READ_RANGE(ctx, src2, sizeof(*src2));
4456 int res = REAL(sigorset)(dst, src1, src2);
4457 if (!res && dst)
4458 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst));
4459 return res;
4460}
4461#define INIT_SIGSET_LOGICOPS \
4462 COMMON_INTERCEPT_FUNCTION(sigandset); \
4463 COMMON_INTERCEPT_FUNCTION(sigorset);
4464#else
4465#define INIT_SIGSET_LOGICOPS
4466#endif
4467
4468#if SANITIZER_INTERCEPT_SIGPENDING
4469INTERCEPTOR(int, sigpending, __sanitizer_sigset_t *set) {
4470 void *ctx;
4471 COMMON_INTERCEPTOR_ENTER(ctx, sigpending, set);
4472 // FIXME: under ASan the call below may write to freed memory and corrupt
4473 // its metadata. See
4474 // https://github.com/google/sanitizers/issues/321.
4475 int res = REAL(sigpending)(set);
4476 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
4477 return res;
4478}
4479#define INIT_SIGPENDING COMMON_INTERCEPT_FUNCTION(sigpending);
4480#else
4481#define INIT_SIGPENDING
4482#endif
4483
4484#if SANITIZER_INTERCEPT_SIGPROCMASK
4485INTERCEPTOR(int, sigprocmask, int how, __sanitizer_sigset_t *set,
4486 __sanitizer_sigset_t *oldset) {
4487 void *ctx;
4488 COMMON_INTERCEPTOR_ENTER(ctx, sigprocmask, how, set, oldset);
4489 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4490 // FIXME: under ASan the call below may write to freed memory and corrupt
4491 // its metadata. See
4492 // https://github.com/google/sanitizers/issues/321.
4493 int res = REAL(sigprocmask)(how, set, oldset);
4494 if (!res && oldset)
4495 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset));
4496 return res;
4497}
4498#define INIT_SIGPROCMASK COMMON_INTERCEPT_FUNCTION(sigprocmask);
4499#else
4500#define INIT_SIGPROCMASK
4501#endif
4502
4503#if SANITIZER_INTERCEPT_PTHREAD_SIGMASK
4504INTERCEPTOR(int, pthread_sigmask, int how, __sanitizer_sigset_t *set,
4505 __sanitizer_sigset_t *oldset) {
4506 void *ctx;
4507 COMMON_INTERCEPTOR_ENTER(ctx, pthread_sigmask, how, set, oldset);
4508 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4509 // FIXME: under ASan the call below may write to freed memory and corrupt
4510 // its metadata. See
4511 // https://github.com/google/sanitizers/issues/321.
4512 int res = REAL(pthread_sigmask)(how, set, oldset);
4513 if (!res && oldset)
4514 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset));
4515 return res;
4516}
4517#define INIT_PTHREAD_SIGMASK COMMON_INTERCEPT_FUNCTION(pthread_sigmask);
4518#else
4519#define INIT_PTHREAD_SIGMASK
4520#endif
4521
4522#if SANITIZER_INTERCEPT_BACKTRACE
4523INTERCEPTOR(int, backtrace, void **buffer, int size) {
4524 void *ctx;
4525 COMMON_INTERCEPTOR_ENTER(ctx, backtrace, buffer, size);
4526 // 'buffer' might be freed memory, hence it is unsafe to directly call
4527 // REAL(backtrace)(buffer, size). Instead, we use our own known-good
4528 // scratch buffer.
4529 void **scratch = (void**)InternalAlloc(sizeof(void*) * size);
4530 int res = REAL(backtrace)(scratch, size);
4531 if (res && buffer) {
4532 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buffer, res * sizeof(*buffer));
4533 internal_memcpy(buffer, scratch, res * sizeof(*buffer));
4534 }
4535 InternalFree(scratch);
4536 return res;
4537}
4538
4539INTERCEPTOR(char **, backtrace_symbols, void **buffer, int size) {
4540 void *ctx;
4541 COMMON_INTERCEPTOR_ENTER(ctx, backtrace_symbols, buffer, size);
4542 if (buffer && size)
4543 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, size * sizeof(*buffer));
4544 // The COMMON_INTERCEPTOR_READ_RANGE above ensures that 'buffer' is
4545 // valid for reading.
4546 char **res = REAL(backtrace_symbols)(buffer, size);
4547 if (res && size) {
4548 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, size * sizeof(*res));
4549 for (int i = 0; i < size; ++i)
4550 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res[i], internal_strlen(res[i]) + 1);
4551 }
4552 return res;
4553}
4554#define INIT_BACKTRACE \
4555 COMMON_INTERCEPT_FUNCTION(backtrace); \
4556 COMMON_INTERCEPT_FUNCTION(backtrace_symbols);
4557#else
4558#define INIT_BACKTRACE
4559#endif
4560
4561#if SANITIZER_INTERCEPT__EXIT
4562INTERCEPTOR(void, _exit, int status) {
4563 void *ctx;
4564 COMMON_INTERCEPTOR_ENTER(ctx, _exit, status);
4565 COMMON_INTERCEPTOR_USER_CALLBACK_START();
4566 int status1 = COMMON_INTERCEPTOR_ON_EXIT(ctx);
4567 COMMON_INTERCEPTOR_USER_CALLBACK_END();
4568 if (status == 0) status = status1;
4569 REAL(_exit)(status);
4570}
4571#define INIT__EXIT COMMON_INTERCEPT_FUNCTION(_exit);
4572#else
4573#define INIT__EXIT
4574#endif
4575
4576#if SANITIZER_INTERCEPT___LIBC_MUTEX
4577INTERCEPTOR(int, __libc_thr_setcancelstate, int state, int *oldstate)
4578ALIAS(WRAP(pthread_setcancelstate));
4579
4580#define INIT___LIBC_THR_SETCANCELSTATE \
4581 COMMON_INTERCEPT_FUNCTION(__libc_thr_setcancelstate)
4582#else
4583#define INIT___LIBC_THR_SETCANCELSTATE
4584#endif
4585
4586#if SANITIZER_INTERCEPT_GETMNTENT || SANITIZER_INTERCEPT_GETMNTENT_R
4587static void write_mntent(void *ctx, __sanitizer_mntent *mnt) {
4588 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt, sizeof(*mnt));
4589 if (mnt->mnt_fsname)
4590 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_fsname,
4591 internal_strlen(mnt->mnt_fsname) + 1);
4592 if (mnt->mnt_dir)
4593 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_dir,
4594 internal_strlen(mnt->mnt_dir) + 1);
4595 if (mnt->mnt_type)
4596 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_type,
4597 internal_strlen(mnt->mnt_type) + 1);
4598 if (mnt->mnt_opts)
4599 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_opts,
4600 internal_strlen(mnt->mnt_opts) + 1);
4601}
4602#endif
4603
4604#if SANITIZER_INTERCEPT_GETMNTENT
4605INTERCEPTOR(__sanitizer_mntent *, getmntent, void *fp) {
4606 void *ctx;
4607 COMMON_INTERCEPTOR_ENTER(ctx, getmntent, fp);
4608 __sanitizer_mntent *res = REAL(getmntent)(fp);
4609 if (res) write_mntent(ctx, res);
4610 return res;
4611}
4612#define INIT_GETMNTENT COMMON_INTERCEPT_FUNCTION(getmntent);
4613#else
4614#define INIT_GETMNTENT
4615#endif
4616
4617#if SANITIZER_INTERCEPT_GETMNTENT_R
4618INTERCEPTOR(__sanitizer_mntent *, getmntent_r, void *fp,
4619 __sanitizer_mntent *mntbuf, char *buf, int buflen) {
4620 void *ctx;
4621 COMMON_INTERCEPTOR_ENTER(ctx, getmntent_r, fp, mntbuf, buf, buflen);
4622 __sanitizer_mntent *res = REAL(getmntent_r)(fp, mntbuf, buf, buflen);
4623 if (res) write_mntent(ctx, res);
4624 return res;
4625}
4626#define INIT_GETMNTENT_R COMMON_INTERCEPT_FUNCTION(getmntent_r);
4627#else
4628#define INIT_GETMNTENT_R
4629#endif
4630
4631#if SANITIZER_INTERCEPT_STATFS
4632INTERCEPTOR(int, statfs, char *path, void *buf) {
4633 void *ctx;
4634 COMMON_INTERCEPTOR_ENTER(ctx, statfs, path, buf);
4635 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4636 // FIXME: under ASan the call below may write to freed memory and corrupt
4637 // its metadata. See
4638 // https://github.com/google/sanitizers/issues/321.
4639 int res = REAL(statfs)(path, buf);
4640 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz);
4641 return res;
4642}
4643INTERCEPTOR(int, fstatfs, int fd, void *buf) {
4644 void *ctx;
4645 COMMON_INTERCEPTOR_ENTER(ctx, fstatfs, fd, buf);
4646 // FIXME: under ASan the call below may write to freed memory and corrupt
4647 // its metadata. See
4648 // https://github.com/google/sanitizers/issues/321.
4649 int res = REAL(fstatfs)(fd, buf);
4650 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz);
4651 return res;
4652}
4653#define INIT_STATFS \
4654 COMMON_INTERCEPT_FUNCTION(statfs); \
4655 COMMON_INTERCEPT_FUNCTION(fstatfs);
4656#else
4657#define INIT_STATFS
4658#endif
4659
4660#if SANITIZER_INTERCEPT_STATFS64
4661INTERCEPTOR(int, statfs64, char *path, void *buf) {
4662 void *ctx;
4663 COMMON_INTERCEPTOR_ENTER(ctx, statfs64, path, buf);
4664 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4665 // FIXME: under ASan the call below may write to freed memory and corrupt
4666 // its metadata. See
4667 // https://github.com/google/sanitizers/issues/321.
4668 int res = REAL(statfs64)(path, buf);
4669 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz);
4670 return res;
4671}
4672INTERCEPTOR(int, fstatfs64, int fd, void *buf) {
4673 void *ctx;
4674 COMMON_INTERCEPTOR_ENTER(ctx, fstatfs64, fd, buf);
4675 // FIXME: under ASan the call below may write to freed memory and corrupt
4676 // its metadata. See
4677 // https://github.com/google/sanitizers/issues/321.
4678 int res = REAL(fstatfs64)(fd, buf);
4679 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz);
4680 return res;
4681}
4682#define INIT_STATFS64 \
4683 COMMON_INTERCEPT_FUNCTION(statfs64); \
4684 COMMON_INTERCEPT_FUNCTION(fstatfs64);
4685#else
4686#define INIT_STATFS64
4687#endif
4688
4689#if SANITIZER_INTERCEPT_STATVFS
4690INTERCEPTOR(int, statvfs, char *path, void *buf) {
4691 void *ctx;
4692 COMMON_INTERCEPTOR_ENTER(ctx, statvfs, path, buf);
4693 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4694 // FIXME: under ASan the call below may write to freed memory and corrupt
4695 // its metadata. See
4696 // https://github.com/google/sanitizers/issues/321.
4697 int res = REAL(statvfs)(path, buf);
4698 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
4699 return res;
4700}
4701INTERCEPTOR(int, fstatvfs, int fd, void *buf) {
4702 void *ctx;
4703 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs, fd, buf);
4704 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
4705 // FIXME: under ASan the call below may write to freed memory and corrupt
4706 // its metadata. See
4707 // https://github.com/google/sanitizers/issues/321.
4708 int res = REAL(fstatvfs)(fd, buf);
4709 if (!res) {
4710 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
4711 if (fd >= 0)
4712 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
4713 }
4714 return res;
4715}
4716#define INIT_STATVFS \
4717 COMMON_INTERCEPT_FUNCTION(statvfs); \
4718 COMMON_INTERCEPT_FUNCTION(fstatvfs);
4719#else
4720#define INIT_STATVFS
4721#endif
4722
4723#if SANITIZER_INTERCEPT_STATVFS64
4724INTERCEPTOR(int, statvfs64, char *path, void *buf) {
4725 void *ctx;
4726 COMMON_INTERCEPTOR_ENTER(ctx, statvfs64, path, buf);
4727 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4728 // FIXME: under ASan the call below may write to freed memory and corrupt
4729 // its metadata. See
4730 // https://github.com/google/sanitizers/issues/321.
4731 int res = REAL(statvfs64)(path, buf);
4732 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz);
4733 return res;
4734}
4735INTERCEPTOR(int, fstatvfs64, int fd, void *buf) {
4736 void *ctx;
4737 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs64, fd, buf);
4738 // FIXME: under ASan the call below may write to freed memory and corrupt
4739 // its metadata. See
4740 // https://github.com/google/sanitizers/issues/321.
4741 int res = REAL(fstatvfs64)(fd, buf);
4742 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz);
4743 return res;
4744}
4745#define INIT_STATVFS64 \
4746 COMMON_INTERCEPT_FUNCTION(statvfs64); \
4747 COMMON_INTERCEPT_FUNCTION(fstatvfs64);
4748#else
4749#define INIT_STATVFS64
4750#endif
4751
4752#if SANITIZER_INTERCEPT_INITGROUPS
4753INTERCEPTOR(int, initgroups, char *user, u32 group) {
4754 void *ctx;
4755 COMMON_INTERCEPTOR_ENTER(ctx, initgroups, user, group);
4756 if (user) COMMON_INTERCEPTOR_READ_RANGE(ctx, user, internal_strlen(user) + 1);
4757 int res = REAL(initgroups)(user, group);
4758 return res;
4759}
4760#define INIT_INITGROUPS COMMON_INTERCEPT_FUNCTION(initgroups);
4761#else
4762#define INIT_INITGROUPS
4763#endif
4764
4765#if SANITIZER_INTERCEPT_ETHER_NTOA_ATON
4766INTERCEPTOR(char *, ether_ntoa, __sanitizer_ether_addr *addr) {
4767 void *ctx;
4768 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa, addr);
4769 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
4770 char *res = REAL(ether_ntoa)(addr);
4771 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
4772 return res;
4773}
4774INTERCEPTOR(__sanitizer_ether_addr *, ether_aton, char *buf) {
4775 void *ctx;
4776 COMMON_INTERCEPTOR_ENTER(ctx, ether_aton, buf);
4777 if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, internal_strlen(buf) + 1);
4778 __sanitizer_ether_addr *res = REAL(ether_aton)(buf);
4779 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, sizeof(*res));
4780 return res;
4781}
4782#define INIT_ETHER_NTOA_ATON \
4783 COMMON_INTERCEPT_FUNCTION(ether_ntoa); \
4784 COMMON_INTERCEPT_FUNCTION(ether_aton);
4785#else
4786#define INIT_ETHER_NTOA_ATON
4787#endif
4788
4789#if SANITIZER_INTERCEPT_ETHER_HOST
4790INTERCEPTOR(int, ether_ntohost, char *hostname, __sanitizer_ether_addr *addr) {
4791 void *ctx;
4792 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntohost, hostname, addr);
4793 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
4794 // FIXME: under ASan the call below may write to freed memory and corrupt
4795 // its metadata. See
4796 // https://github.com/google/sanitizers/issues/321.
4797 int res = REAL(ether_ntohost)(hostname, addr);
4798 if (!res && hostname)
4799 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, internal_strlen(hostname) + 1);
4800 return res;
4801}
4802INTERCEPTOR(int, ether_hostton, char *hostname, __sanitizer_ether_addr *addr) {
4803 void *ctx;
4804 COMMON_INTERCEPTOR_ENTER(ctx, ether_hostton, hostname, addr);
4805 if (hostname)
4806 COMMON_INTERCEPTOR_READ_RANGE(ctx, hostname, internal_strlen(hostname) + 1);
4807 // FIXME: under ASan the call below may write to freed memory and corrupt
4808 // its metadata. See
4809 // https://github.com/google/sanitizers/issues/321.
4810 int res = REAL(ether_hostton)(hostname, addr);
4811 if (!res && addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
4812 return res;
4813}
4814INTERCEPTOR(int, ether_line, char *line, __sanitizer_ether_addr *addr,
4815 char *hostname) {
4816 void *ctx;
4817 COMMON_INTERCEPTOR_ENTER(ctx, ether_line, line, addr, hostname);
4818 if (line) COMMON_INTERCEPTOR_READ_RANGE(ctx, line, internal_strlen(line) + 1);
4819 // FIXME: under ASan the call below may write to freed memory and corrupt
4820 // its metadata. See
4821 // https://github.com/google/sanitizers/issues/321.
4822 int res = REAL(ether_line)(line, addr, hostname);
4823 if (!res) {
4824 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
4825 if (hostname)
4826 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, internal_strlen(hostname) + 1);
4827 }
4828 return res;
4829}
4830#define INIT_ETHER_HOST \
4831 COMMON_INTERCEPT_FUNCTION(ether_ntohost); \
4832 COMMON_INTERCEPT_FUNCTION(ether_hostton); \
4833 COMMON_INTERCEPT_FUNCTION(ether_line);
4834#else
4835#define INIT_ETHER_HOST
4836#endif
4837
4838#if SANITIZER_INTERCEPT_ETHER_R
4839INTERCEPTOR(char *, ether_ntoa_r, __sanitizer_ether_addr *addr, char *buf) {
4840 void *ctx;
4841 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa_r, addr, buf);
4842 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
4843 // FIXME: under ASan the call below may write to freed memory and corrupt
4844 // its metadata. See
4845 // https://github.com/google/sanitizers/issues/321.
4846 char *res = REAL(ether_ntoa_r)(addr, buf);
4847 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
4848 return res;
4849}
4850INTERCEPTOR(__sanitizer_ether_addr *, ether_aton_r, char *buf,
4851 __sanitizer_ether_addr *addr) {
4852 void *ctx;
4853 COMMON_INTERCEPTOR_ENTER(ctx, ether_aton_r, buf, addr);
4854 if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, internal_strlen(buf) + 1);
4855 // FIXME: under ASan the call below may write to freed memory and corrupt
4856 // its metadata. See
4857 // https://github.com/google/sanitizers/issues/321.
4858 __sanitizer_ether_addr *res = REAL(ether_aton_r)(buf, addr);
4859 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(*res));
4860 return res;
4861}
4862#define INIT_ETHER_R \
4863 COMMON_INTERCEPT_FUNCTION(ether_ntoa_r); \
4864 COMMON_INTERCEPT_FUNCTION(ether_aton_r);
4865#else
4866#define INIT_ETHER_R
4867#endif
4868
4869#if SANITIZER_INTERCEPT_SHMCTL
4870INTERCEPTOR(int, shmctl, int shmid, int cmd, void *buf) {
4871 void *ctx;
4872 COMMON_INTERCEPTOR_ENTER(ctx, shmctl, shmid, cmd, buf);
4873 // FIXME: under ASan the call below may write to freed memory and corrupt
4874 // its metadata. See
4875 // https://github.com/google/sanitizers/issues/321.
4876 int res = REAL(shmctl)(shmid, cmd, buf);
4877 if (res >= 0) {
4878 unsigned sz = 0;
4879 if (cmd == shmctl_ipc_stat || cmd == shmctl_shm_stat)
4880 sz = sizeof(__sanitizer_shmid_ds);
4881 else if (cmd == shmctl_ipc_info)
4882 sz = struct_shminfo_sz;
4883 else if (cmd == shmctl_shm_info)
4884 sz = struct_shm_info_sz;
4885 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz);
4886 }
4887 return res;
4888}
4889#define INIT_SHMCTL COMMON_INTERCEPT_FUNCTION(shmctl);
4890#else
4891#define INIT_SHMCTL
4892#endif
4893
4894#if SANITIZER_INTERCEPT_RANDOM_R
4895INTERCEPTOR(int, random_r, void *buf, u32 *result) {
4896 void *ctx;
4897 COMMON_INTERCEPTOR_ENTER(ctx, random_r, buf, result);
4898 // FIXME: under ASan the call below may write to freed memory and corrupt
4899 // its metadata. See
4900 // https://github.com/google/sanitizers/issues/321.
4901 int res = REAL(random_r)(buf, result);
4902 if (!res && result)
4903 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
4904 return res;
4905}
4906#define INIT_RANDOM_R COMMON_INTERCEPT_FUNCTION(random_r);
4907#else
4908#define INIT_RANDOM_R
4909#endif
4910
4911// FIXME: under ASan the REAL() call below may write to freed memory and corrupt
4912// its metadata. See
4913// https://github.com/google/sanitizers/issues/321.
4914#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET || \
4915 SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED || \
4916 SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSSCHED || \
4917 SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GET || \
4918 SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GET || \
4919 SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GET || \
4920 SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GET
4921#define INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(fn, sz) \
4922 INTERCEPTOR(int, fn, void *attr, void *r) { \
4923 void *ctx; \
4924 COMMON_INTERCEPTOR_ENTER(ctx, fn, attr, r); \
4925 int res = REAL(fn)(attr, r); \
4926 if (!res && r) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, r, sz); \
4927 return res; \
4928 }
4929#define INTERCEPTOR_PTHREAD_ATTR_GET(what, sz) \
4930 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_attr_get##what, sz)
4931#define INTERCEPTOR_PTHREAD_MUTEXATTR_GET(what, sz) \
4932 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_mutexattr_get##what, sz)
4933#define INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(what, sz) \
4934 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_rwlockattr_get##what, sz)
4935#define INTERCEPTOR_PTHREAD_CONDATTR_GET(what, sz) \
4936 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_condattr_get##what, sz)
4937#define INTERCEPTOR_PTHREAD_BARRIERATTR_GET(what, sz) \
4938 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_barrierattr_get##what, sz)
4939#endif
4940
4941#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET
4942INTERCEPTOR_PTHREAD_ATTR_GET(detachstate, sizeof(int))
4943INTERCEPTOR_PTHREAD_ATTR_GET(guardsize, sizeof(SIZE_T))
4944INTERCEPTOR_PTHREAD_ATTR_GET(scope, sizeof(int))
4945INTERCEPTOR_PTHREAD_ATTR_GET(stacksize, sizeof(SIZE_T))
4946INTERCEPTOR(int, pthread_attr_getstack, void *attr, void **addr, SIZE_T *size) {
4947 void *ctx;
4948 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getstack, attr, addr, size);
4949 // FIXME: under ASan the call below may write to freed memory and corrupt
4950 // its metadata. See
4951 // https://github.com/google/sanitizers/issues/321.
4952 int res = REAL(pthread_attr_getstack)(attr, addr, size);
4953 if (!res) {
4954 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
4955 if (size) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, size, sizeof(*size));
4956 }
4957 return res;
4958}
4959
4960// We may need to call the real pthread_attr_getstack from the run-time
4961// in sanitizer_common, but we don't want to include the interception headers
4962// there. So, just define this function here.
4963namespace __sanitizer {
4964extern "C" {
4965int real_pthread_attr_getstack(void *attr, void **addr, SIZE_T *size) {
4966 return REAL(pthread_attr_getstack)(attr, addr, size);
4967}
4968} // extern "C"
4969} // namespace __sanitizer
4970
4971#define INIT_PTHREAD_ATTR_GET \
4972 COMMON_INTERCEPT_FUNCTION(pthread_attr_getdetachstate); \
4973 COMMON_INTERCEPT_FUNCTION(pthread_attr_getguardsize); \
4974 COMMON_INTERCEPT_FUNCTION(pthread_attr_getscope); \
4975 COMMON_INTERCEPT_FUNCTION(pthread_attr_getstacksize); \
4976 COMMON_INTERCEPT_FUNCTION(pthread_attr_getstack);
4977#else
4978#define INIT_PTHREAD_ATTR_GET
4979#endif
4980
4981#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED
4982INTERCEPTOR_PTHREAD_ATTR_GET(schedparam, struct_sched_param_sz)
4983INTERCEPTOR_PTHREAD_ATTR_GET(schedpolicy, sizeof(int))
4984
4985#define INIT_PTHREAD_ATTR_GET_SCHED \
4986 COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedparam); \
4987 COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedpolicy);
4988#else
4989#define INIT_PTHREAD_ATTR_GET_SCHED
4990#endif
4991
4992#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSCHED
4993INTERCEPTOR_PTHREAD_ATTR_GET(inheritsched, sizeof(int))
4994
4995#define INIT_PTHREAD_ATTR_GETINHERITSCHED \
4996 COMMON_INTERCEPT_FUNCTION(pthread_attr_getinheritsched);
4997#else
4998#define INIT_PTHREAD_ATTR_GETINHERITSCHED
4999#endif
5000
5001#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETAFFINITY_NP
5002INTERCEPTOR(int, pthread_attr_getaffinity_np, void *attr, SIZE_T cpusetsize,
5003 void *cpuset) {
5004 void *ctx;
5005 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getaffinity_np, attr, cpusetsize,
5006 cpuset);
5007 // FIXME: under ASan the call below may write to freed memory and corrupt
5008 // its metadata. See
5009 // https://github.com/google/sanitizers/issues/321.
5010 int res = REAL(pthread_attr_getaffinity_np)(attr, cpusetsize, cpuset);
5011 if (!res && cpusetsize && cpuset)
5012 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize);
5013 return res;
5014}
5015
5016#define INIT_PTHREAD_ATTR_GETAFFINITY_NP \
5017 COMMON_INTERCEPT_FUNCTION(pthread_attr_getaffinity_np);
5018#else
5019#define INIT_PTHREAD_ATTR_GETAFFINITY_NP
5020#endif
5021
5022#if SANITIZER_INTERCEPT_PTHREAD_GETAFFINITY_NP
5023INTERCEPTOR(int, pthread_getaffinity_np, void *attr, SIZE_T cpusetsize,
5024 void *cpuset) {
5025 void *ctx;
5026 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getaffinity_np, attr, cpusetsize,
5027 cpuset);
5028 // FIXME: under ASan the call below may write to freed memory and corrupt
5029 // its metadata. See
5030 // https://github.com/google/sanitizers/issues/321.
5031 int res = REAL(pthread_getaffinity_np)(attr, cpusetsize, cpuset);
5032 if (!res && cpusetsize && cpuset)
5033 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize);
5034 return res;
5035}
5036
5037#define INIT_PTHREAD_GETAFFINITY_NP \
5038 COMMON_INTERCEPT_FUNCTION(pthread_getaffinity_np);
5039#else
5040#define INIT_PTHREAD_GETAFFINITY_NP
5041#endif
5042
5043#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPSHARED
5044INTERCEPTOR_PTHREAD_MUTEXATTR_GET(pshared, sizeof(int))
5045#define INIT_PTHREAD_MUTEXATTR_GETPSHARED \
5046 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getpshared);
5047#else
5048#define INIT_PTHREAD_MUTEXATTR_GETPSHARED
5049#endif
5050
5051#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETTYPE
5052INTERCEPTOR_PTHREAD_MUTEXATTR_GET(type, sizeof(int))
5053#define INIT_PTHREAD_MUTEXATTR_GETTYPE \
5054 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_gettype);
5055#else
5056#define INIT_PTHREAD_MUTEXATTR_GETTYPE
5057#endif
5058
5059#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPROTOCOL
5060INTERCEPTOR_PTHREAD_MUTEXATTR_GET(protocol, sizeof(int))
5061#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL \
5062 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprotocol);
5063#else
5064#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL
5065#endif
5066
5067#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPRIOCEILING
5068INTERCEPTOR_PTHREAD_MUTEXATTR_GET(prioceiling, sizeof(int))
5069#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING \
5070 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprioceiling);
5071#else
5072#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING
5073#endif
5074
5075#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST
5076INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust, sizeof(int))
5077#define INIT_PTHREAD_MUTEXATTR_GETROBUST \
5078 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust);
5079#else
5080#define INIT_PTHREAD_MUTEXATTR_GETROBUST
5081#endif
5082
5083#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST_NP
5084INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust_np, sizeof(int))
5085#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP \
5086 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust_np);
5087#else
5088#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP
5089#endif
5090
5091#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETPSHARED
5092INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(pshared, sizeof(int))
5093#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED \
5094 COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getpshared);
5095#else
5096#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED
5097#endif
5098
5099#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETKIND_NP
5100INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(kind_np, sizeof(int))
5101#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP \
5102 COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getkind_np);
5103#else
5104#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP
5105#endif
5106
5107#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETPSHARED
5108INTERCEPTOR_PTHREAD_CONDATTR_GET(pshared, sizeof(int))
5109#define INIT_PTHREAD_CONDATTR_GETPSHARED \
5110 COMMON_INTERCEPT_FUNCTION(pthread_condattr_getpshared);
5111#else
5112#define INIT_PTHREAD_CONDATTR_GETPSHARED
5113#endif
5114
5115#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETCLOCK
5116INTERCEPTOR_PTHREAD_CONDATTR_GET(clock, sizeof(int))
5117#define INIT_PTHREAD_CONDATTR_GETCLOCK \
5118 COMMON_INTERCEPT_FUNCTION(pthread_condattr_getclock);
5119#else
5120#define INIT_PTHREAD_CONDATTR_GETCLOCK
5121#endif
5122
5123#if SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GETPSHARED
5124INTERCEPTOR_PTHREAD_BARRIERATTR_GET(pshared, sizeof(int)) // !mac !android
5125#define INIT_PTHREAD_BARRIERATTR_GETPSHARED \
5126 COMMON_INTERCEPT_FUNCTION(pthread_barrierattr_getpshared);
5127#else
5128#define INIT_PTHREAD_BARRIERATTR_GETPSHARED
5129#endif
5130
5131#if SANITIZER_INTERCEPT_TMPNAM
5132INTERCEPTOR(char *, tmpnam, char *s) {
5133 void *ctx;
5134 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam, s);
5135 char *res = REAL(tmpnam)(s);
5136 if (res) {
5137 if (s)
5138 // FIXME: under ASan the call below may write to freed memory and corrupt
5139 // its metadata. See
5140 // https://github.com/google/sanitizers/issues/321.
5141 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1);
5142 else
5143 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
5144 }
5145 return res;
5146}
5147#define INIT_TMPNAM COMMON_INTERCEPT_FUNCTION(tmpnam);
5148#else
5149#define INIT_TMPNAM
5150#endif
5151
5152#if SANITIZER_INTERCEPT_TMPNAM_R
5153INTERCEPTOR(char *, tmpnam_r, char *s) {
5154 void *ctx;
5155 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam_r, s);
5156 // FIXME: under ASan the call below may write to freed memory and corrupt
5157 // its metadata. See
5158 // https://github.com/google/sanitizers/issues/321.
5159 char *res = REAL(tmpnam_r)(s);
5160 if (res && s) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1);
5161 return res;
5162}
5163#define INIT_TMPNAM_R COMMON_INTERCEPT_FUNCTION(tmpnam_r);
5164#else
5165#define INIT_TMPNAM_R
5166#endif
5167
5168#if SANITIZER_INTERCEPT_PTSNAME
5169INTERCEPTOR(char *, ptsname, int fd) {
5170 void *ctx;
5171 COMMON_INTERCEPTOR_ENTER(ctx, ptsname, fd);
5172 char *res = REAL(ptsname)(fd);
5173 if (res != nullptr)
5174 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
5175 return res;
5176}
5177#define INIT_PTSNAME COMMON_INTERCEPT_FUNCTION(ptsname);
5178#else
5179#define INIT_PTSNAME
5180#endif
5181
5182#if SANITIZER_INTERCEPT_PTSNAME_R
5183INTERCEPTOR(int, ptsname_r, int fd, char *name, SIZE_T namesize) {
5184 void *ctx;
5185 COMMON_INTERCEPTOR_ENTER(ctx, ptsname_r, fd, name, namesize);
5186 int res = REAL(ptsname_r)(fd, name, namesize);
5187 if (res == 0)
5188 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
5189 return res;
5190}
5191#define INIT_PTSNAME_R COMMON_INTERCEPT_FUNCTION(ptsname_r);
5192#else
5193#define INIT_PTSNAME_R
5194#endif
5195
5196#if SANITIZER_INTERCEPT_TTYNAME
5197INTERCEPTOR(char *, ttyname, int fd) {
5198 void *ctx;
5199 COMMON_INTERCEPTOR_ENTER(ctx, ttyname, fd);
5200 char *res = REAL(ttyname)(fd);
5201 if (res != nullptr)
5202 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
5203 return res;
5204}
5205#define INIT_TTYNAME COMMON_INTERCEPT_FUNCTION(ttyname);
5206#else
5207#define INIT_TTYNAME
5208#endif
5209
5210#if SANITIZER_INTERCEPT_TTYNAME_R
5211INTERCEPTOR(int, ttyname_r, int fd, char *name, SIZE_T namesize) {
5212 void *ctx;
5213 COMMON_INTERCEPTOR_ENTER(ctx, ttyname_r, fd, name, namesize);
5214 int res = REAL(ttyname_r)(fd, name, namesize);
5215 if (res == 0)
5216 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
5217 return res;
5218}
5219#define INIT_TTYNAME_R COMMON_INTERCEPT_FUNCTION(ttyname_r);
5220#else
5221#define INIT_TTYNAME_R
5222#endif
5223
5224#if SANITIZER_INTERCEPT_TEMPNAM
5225INTERCEPTOR(char *, tempnam, char *dir, char *pfx) {
5226 void *ctx;
5227 COMMON_INTERCEPTOR_ENTER(ctx, tempnam, dir, pfx);
5228 if (dir) COMMON_INTERCEPTOR_READ_RANGE(ctx, dir, internal_strlen(dir) + 1);
5229 if (pfx) COMMON_INTERCEPTOR_READ_RANGE(ctx, pfx, internal_strlen(pfx) + 1);
5230 char *res = REAL(tempnam)(dir, pfx);
5231 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
5232 return res;
5233}
5234#define INIT_TEMPNAM COMMON_INTERCEPT_FUNCTION(tempnam);
5235#else
5236#define INIT_TEMPNAM
5237#endif
5238
5239#if SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && !SANITIZER_NETBSD
5240INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name) {
5241 void *ctx;
5242 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name);
5243 COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0);
5244 COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, name);
5245 return REAL(pthread_setname_np)(thread, name);
5246}
5247#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np);
5248#elif SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && SANITIZER_NETBSD
5249INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name, void *arg) {
5250 void *ctx;
5251 char newname[32]; // PTHREAD_MAX_NAMELEN_NP=32
5252 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name, arg);
5253 COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0);
5254 internal_snprintf(newname, sizeof(newname), name, arg);
5255 COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, newname);
5256 return REAL(pthread_setname_np)(thread, name, arg);
5257}
5258#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np);
5259#else
5260#define INIT_PTHREAD_SETNAME_NP
5261#endif
5262
5263#if SANITIZER_INTERCEPT_PTHREAD_GETNAME_NP
5264INTERCEPTOR(int, pthread_getname_np, uptr thread, char *name, SIZE_T len) {
5265 void *ctx;
5266 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getname_np, thread, name, len);
5267 int res = REAL(pthread_getname_np)(thread, name, len);
5268 if (!res)
5269 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strnlen(name, len) + 1);
5270 return res;
5271}
5272#define INIT_PTHREAD_GETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_getname_np);
5273#else
5274#define INIT_PTHREAD_GETNAME_NP
5275#endif
5276
5277#if SANITIZER_INTERCEPT_SINCOS
5278INTERCEPTOR(void, sincos, double x, double *sin, double *cos) {
5279 void *ctx;
5280 COMMON_INTERCEPTOR_ENTER(ctx, sincos, x, sin, cos);
5281 // FIXME: under ASan the call below may write to freed memory and corrupt
5282 // its metadata. See
5283 // https://github.com/google/sanitizers/issues/321.
5284 REAL(sincos)(x, sin, cos);
5285 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
5286 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
5287}
5288INTERCEPTOR(void, sincosf, float x, float *sin, float *cos) {
5289 void *ctx;
5290 COMMON_INTERCEPTOR_ENTER(ctx, sincosf, x, sin, cos);
5291 // FIXME: under ASan the call below may write to freed memory and corrupt
5292 // its metadata. See
5293 // https://github.com/google/sanitizers/issues/321.
5294 REAL(sincosf)(x, sin, cos);
5295 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
5296 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
5297}
5298INTERCEPTOR(void, sincosl, long double x, long double *sin, long double *cos) {
5299 void *ctx;
5300 COMMON_INTERCEPTOR_ENTER(ctx, sincosl, x, sin, cos);
5301 // FIXME: under ASan the call below may write to freed memory and corrupt
5302 // its metadata. See
5303 // https://github.com/google/sanitizers/issues/321.
5304 REAL(sincosl)(x, sin, cos);
5305 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
5306 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
5307}
5308#define INIT_SINCOS \
5309 COMMON_INTERCEPT_FUNCTION(sincos); \
5310 COMMON_INTERCEPT_FUNCTION(sincosf); \
5311 COMMON_INTERCEPT_FUNCTION_LDBL(sincosl);
5312#else
5313#define INIT_SINCOS
5314#endif
5315
5316#if SANITIZER_INTERCEPT_REMQUO
5317INTERCEPTOR(double, remquo, double x, double y, int *quo) {
5318 void *ctx;
5319 COMMON_INTERCEPTOR_ENTER(ctx, remquo, x, y, quo);
5320 // FIXME: under ASan the call below may write to freed memory and corrupt
5321 // its metadata. See
5322 // https://github.com/google/sanitizers/issues/321.
5323 double res = REAL(remquo)(x, y, quo);
5324 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
5325 return res;
5326}
5327INTERCEPTOR(float, remquof, float x, float y, int *quo) {
5328 void *ctx;
5329 COMMON_INTERCEPTOR_ENTER(ctx, remquof, x, y, quo);
5330 // FIXME: under ASan the call below may write to freed memory and corrupt
5331 // its metadata. See
5332 // https://github.com/google/sanitizers/issues/321.
5333 float res = REAL(remquof)(x, y, quo);
5334 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
5335 return res;
5336}
5337#define INIT_REMQUO \
5338 COMMON_INTERCEPT_FUNCTION(remquo); \
5339 COMMON_INTERCEPT_FUNCTION(remquof);
5340#else
5341#define INIT_REMQUO
5342#endif
5343
5344#if SANITIZER_INTERCEPT_REMQUOL
5345INTERCEPTOR(long double, remquol, long double x, long double y, int *quo) {
5346 void *ctx;
5347 COMMON_INTERCEPTOR_ENTER(ctx, remquol, x, y, quo);
5348 // FIXME: under ASan the call below may write to freed memory and corrupt
5349 // its metadata. See
5350 // https://github.com/google/sanitizers/issues/321.
5351 long double res = REAL(remquol)(x, y, quo);
5352 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
5353 return res;
5354}
5355#define INIT_REMQUOL \
5356 COMMON_INTERCEPT_FUNCTION_LDBL(remquol);
5357#else
5358#define INIT_REMQUOL
5359#endif
5360
5361#if SANITIZER_INTERCEPT_LGAMMA
5362extern int signgam;
5363INTERCEPTOR(double, lgamma, double x) {
5364 void *ctx;
5365 COMMON_INTERCEPTOR_ENTER(ctx, lgamma, x);
5366 double res = REAL(lgamma)(x);
5367 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
5368 return res;
5369}
5370INTERCEPTOR(float, lgammaf, float x) {
5371 void *ctx;
5372 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf, x);
5373 float res = REAL(lgammaf)(x);
5374 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
5375 return res;
5376}
5377#define INIT_LGAMMA \
5378 COMMON_INTERCEPT_FUNCTION(lgamma); \
5379 COMMON_INTERCEPT_FUNCTION(lgammaf);
5380#else
5381#define INIT_LGAMMA
5382#endif
5383
5384#if SANITIZER_INTERCEPT_LGAMMAL
5385INTERCEPTOR(long double, lgammal, long double x) {
5386 void *ctx;
5387 COMMON_INTERCEPTOR_ENTER(ctx, lgammal, x);
5388 long double res = REAL(lgammal)(x);
5389 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
5390 return res;
5391}
5392#define INIT_LGAMMAL \
5393 COMMON_INTERCEPT_FUNCTION_LDBL(lgammal);
5394#else
5395#define INIT_LGAMMAL
5396#endif
5397
5398#if SANITIZER_INTERCEPT_LGAMMA_R
5399INTERCEPTOR(double, lgamma_r, double x, int *signp) {
5400 void *ctx;
5401 COMMON_INTERCEPTOR_ENTER(ctx, lgamma_r, x, signp);
5402 // FIXME: under ASan the call below may write to freed memory and corrupt
5403 // its metadata. See
5404 // https://github.com/google/sanitizers/issues/321.
5405 double res = REAL(lgamma_r)(x, signp);
5406 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
5407 return res;
5408}
5409INTERCEPTOR(float, lgammaf_r, float x, int *signp) {
5410 void *ctx;
5411 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf_r, x, signp);
5412 // FIXME: under ASan the call below may write to freed memory and corrupt
5413 // its metadata. See
5414 // https://github.com/google/sanitizers/issues/321.
5415 float res = REAL(lgammaf_r)(x, signp);
5416 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
5417 return res;
5418}
5419#define INIT_LGAMMA_R \
5420 COMMON_INTERCEPT_FUNCTION(lgamma_r); \
5421 COMMON_INTERCEPT_FUNCTION(lgammaf_r);
5422#else
5423#define INIT_LGAMMA_R
5424#endif
5425
5426#if SANITIZER_INTERCEPT_LGAMMAL_R
5427INTERCEPTOR(long double, lgammal_r, long double x, int *signp) {
5428 void *ctx;
5429 COMMON_INTERCEPTOR_ENTER(ctx, lgammal_r, x, signp);
5430 // FIXME: under ASan the call below may write to freed memory and corrupt
5431 // its metadata. See
5432 // https://github.com/google/sanitizers/issues/321.
5433 long double res = REAL(lgammal_r)(x, signp);
5434 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
5435 return res;
5436}
5437#define INIT_LGAMMAL_R COMMON_INTERCEPT_FUNCTION_LDBL(lgammal_r);
5438#else
5439#define INIT_LGAMMAL_R
5440#endif
5441
5442#if SANITIZER_INTERCEPT_DRAND48_R
5443INTERCEPTOR(int, drand48_r, void *buffer, double *result) {
5444 void *ctx;
5445 COMMON_INTERCEPTOR_ENTER(ctx, drand48_r, buffer, result);
5446 // FIXME: under ASan the call below may write to freed memory and corrupt
5447 // its metadata. See
5448 // https://github.com/google/sanitizers/issues/321.
5449 int res = REAL(drand48_r)(buffer, result);
5450 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
5451 return res;
5452}
5453INTERCEPTOR(int, lrand48_r, void *buffer, long *result) {
5454 void *ctx;
5455 COMMON_INTERCEPTOR_ENTER(ctx, lrand48_r, buffer, result);
5456 // FIXME: under ASan the call below may write to freed memory and corrupt
5457 // its metadata. See
5458 // https://github.com/google/sanitizers/issues/321.
5459 int res = REAL(lrand48_r)(buffer, result);
5460 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
5461 return res;
5462}
5463#define INIT_DRAND48_R \
5464 COMMON_INTERCEPT_FUNCTION(drand48_r); \
5465 COMMON_INTERCEPT_FUNCTION(lrand48_r);
5466#else
5467#define INIT_DRAND48_R
5468#endif
5469
5470#if SANITIZER_INTERCEPT_RAND_R
5471INTERCEPTOR(int, rand_r, unsigned *seedp) {
5472 void *ctx;
5473 COMMON_INTERCEPTOR_ENTER(ctx, rand_r, seedp);
5474 COMMON_INTERCEPTOR_READ_RANGE(ctx, seedp, sizeof(*seedp));
5475 return REAL(rand_r)(seedp);
5476}
5477#define INIT_RAND_R COMMON_INTERCEPT_FUNCTION(rand_r);
5478#else
5479#define INIT_RAND_R
5480#endif
5481
5482#if SANITIZER_INTERCEPT_GETLINE
5483INTERCEPTOR(SSIZE_T, getline, char **lineptr, SIZE_T *n, void *stream) {
5484 void *ctx;
5485 COMMON_INTERCEPTOR_ENTER(ctx, getline, lineptr, n, stream);
5486 // FIXME: under ASan the call below may write to freed memory and corrupt
5487 // its metadata. See
5488 // https://github.com/google/sanitizers/issues/321.
5489 SSIZE_T res = REAL(getline)(lineptr, n, stream);
5490 if (res > 0) {
5491 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr));
5492 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
5493 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1);
5494 }
5495 return res;
5496}
5497
5498// FIXME: under ASan the call below may write to freed memory and corrupt its
5499// metadata. See
5500// https://github.com/google/sanitizers/issues/321.
5501#define GETDELIM_INTERCEPTOR_IMPL(vname) \
5502 { \
5503 void *ctx; \
5504 COMMON_INTERCEPTOR_ENTER(ctx, vname, lineptr, n, delim, stream); \
5505 SSIZE_T res = REAL(vname)(lineptr, n, delim, stream); \
5506 if (res > 0) { \
5507 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr)); \
5508 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); \
5509 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1); \
5510 } \
5511 return res; \
5512 }
5513
5514INTERCEPTOR(SSIZE_T, __getdelim, char **lineptr, SIZE_T *n, int delim,
5515 void *stream)
5516GETDELIM_INTERCEPTOR_IMPL(__getdelim)
5517
5518// There's no __getdelim() on FreeBSD so we supply the getdelim() interceptor
5519// with its own body.
5520INTERCEPTOR(SSIZE_T, getdelim, char **lineptr, SIZE_T *n, int delim,
5521 void *stream)
5522GETDELIM_INTERCEPTOR_IMPL(getdelim)
5523
5524#define INIT_GETLINE \
5525 COMMON_INTERCEPT_FUNCTION(getline); \
5526 COMMON_INTERCEPT_FUNCTION(__getdelim); \
5527 COMMON_INTERCEPT_FUNCTION(getdelim);
5528#else
5529#define INIT_GETLINE
5530#endif
5531
5532#if SANITIZER_INTERCEPT_ICONV
5533INTERCEPTOR(SIZE_T, iconv, void *cd, char **inbuf, SIZE_T *inbytesleft,
5534 char **outbuf, SIZE_T *outbytesleft) {
5535 void *ctx;
5536 COMMON_INTERCEPTOR_ENTER(ctx, iconv, cd, inbuf, inbytesleft, outbuf,
5537 outbytesleft);
5538 if (inbytesleft)
5539 COMMON_INTERCEPTOR_READ_RANGE(ctx, inbytesleft, sizeof(*inbytesleft));
5540 if (inbuf && inbytesleft)
5541 COMMON_INTERCEPTOR_READ_RANGE(ctx, *inbuf, *inbytesleft);
5542 if (outbytesleft)
5543 COMMON_INTERCEPTOR_READ_RANGE(ctx, outbytesleft, sizeof(*outbytesleft));
5544 void *outbuf_orig = outbuf ? *outbuf : nullptr;
5545 // FIXME: under ASan the call below may write to freed memory and corrupt
5546 // its metadata. See
5547 // https://github.com/google/sanitizers/issues/321.
5548 SIZE_T res = REAL(iconv)(cd, inbuf, inbytesleft, outbuf, outbytesleft);
5549 if (outbuf && *outbuf > outbuf_orig) {
5550 SIZE_T sz = (char *)*outbuf - (char *)outbuf_orig;
5551 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, outbuf_orig, sz);
5552 }
5553 return res;
5554}
5555#define INIT_ICONV COMMON_INTERCEPT_FUNCTION(iconv);
5556#else
5557#define INIT_ICONV
5558#endif
5559
5560#if SANITIZER_INTERCEPT_TIMES
5561INTERCEPTOR(__sanitizer_clock_t, times, void *tms) {
5562 void *ctx;
5563 COMMON_INTERCEPTOR_ENTER(ctx, times, tms);
5564 // FIXME: under ASan the call below may write to freed memory and corrupt
5565 // its metadata. See
5566 // https://github.com/google/sanitizers/issues/321.
5567 __sanitizer_clock_t res = REAL(times)(tms);
5568 if (res != (__sanitizer_clock_t)-1 && tms)
5569 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tms, struct_tms_sz);
5570 return res;
5571}
5572#define INIT_TIMES COMMON_INTERCEPT_FUNCTION(times);
5573#else
5574#define INIT_TIMES
5575#endif
5576
5577#if SANITIZER_S390 && \
5578 (SANITIZER_INTERCEPT_TLS_GET_ADDR || SANITIZER_INTERCEPT_TLS_GET_OFFSET)
5579extern "C" uptr __tls_get_offset_wrapper(void *arg, uptr (*fn)(void *arg));
5580DEFINE_REAL(uptr, __tls_get_offset, void *arg)
5581#endif
5582
5583#if SANITIZER_INTERCEPT_TLS_GET_ADDR
5584#if !SANITIZER_S390
5585#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_addr)
5586// If you see any crashes around this functions, there are 2 known issues with
5587// it: 1. __tls_get_addr can be called with mis-aligned stack due to:
5588// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066
5589// 2. It can be called recursively if sanitizer code uses __tls_get_addr
5590// to access thread local variables (it should not happen normally,
5591// because sanitizers use initial-exec tls model).
5592INTERCEPTOR(void *, __tls_get_addr, void *arg) {
5593 void *ctx;
5594 COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr, arg);
5595 void *res = REAL(__tls_get_addr)(arg);
5596 uptr tls_begin, tls_end;
5597 COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end);
5598 DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, res, tls_begin, tls_end);
5599 if (dtv) {
5600 // New DTLS block has been allocated.
5601 COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size);
5602 }
5603 return res;
5604}
5605#if SANITIZER_PPC
5606// On PowerPC, we also need to intercept __tls_get_addr_opt, which has
5607// mostly the same semantics as __tls_get_addr, but its presence enables
5608// some optimizations in linker (which are safe to ignore here).
5609INTERCEPTOR(void *, __tls_get_addr_opt, void *arg) ALIAS(WRAP(__tls_get_addr));
5610#endif
5611#else // SANITIZER_S390
5612// On s390, we have to intercept two functions here:
5613// - __tls_get_addr_internal, which is a glibc-internal function that is like
5614// the usual __tls_get_addr, but returns a TP-relative offset instead of
5615// a proper pointer. It is used by dlsym for TLS symbols.
5616// - __tls_get_offset, which is like the above, but also takes a GOT-relative
5617// descriptor offset as an argument instead of a pointer. GOT address
5618// is passed in r12, so it's necessary to write it in assembly. This is
5619// the function used by the compiler.
5620#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_offset)
5621INTERCEPTOR(uptr, __tls_get_addr_internal, void *arg) {
5622 void *ctx;
5623 COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr_internal, arg);
5624 uptr res = __tls_get_offset_wrapper(arg, REAL(__tls_get_offset));
5625 uptr tp = reinterpret_cast<uptr>(__builtin_thread_pointer());
5626 void *ptr = reinterpret_cast<void *>(res + tp);
5627 uptr tls_begin, tls_end;
5628 COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end);
5629 DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, ptr, tls_begin, tls_end);
5630 if (dtv) {
5631 // New DTLS block has been allocated.
5632 COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size);
5633 }
5634 return res;
5635}
5636#endif // SANITIZER_S390
5637#else
5638#define INIT_TLS_GET_ADDR
5639#endif
5640
5641#if SANITIZER_S390 && \
5642 (SANITIZER_INTERCEPT_TLS_GET_ADDR || SANITIZER_INTERCEPT_TLS_GET_OFFSET)
5643// We need a hidden symbol aliasing the above, so that we can jump
5644// directly to it from the assembly below.
5645extern "C" __attribute__((visibility("hidden"))) uptr __tls_get_addr_hidden(
5646 void *arg) ALIAS(WRAP(__tls_get_addr_internal));
5647extern "C" uptr __tls_get_offset(void *arg);
5648extern "C" uptr TRAMPOLINE(__tls_get_offset)(void *arg);
5649extern "C" uptr WRAP(__tls_get_offset)(void *arg);
5650// Now carefully intercept __tls_get_offset.
5651asm(
5652 ".text\n"
5653// The __intercept_ version has to exist, so that gen_dynamic_list.py
5654// exports our symbol.
5655 ".weak __tls_get_offset\n"
5656 ".set __tls_get_offset, __interceptor___tls_get_offset\n"
5657 ".global __interceptor___tls_get_offset\n"
5658 ".type __interceptor___tls_get_offset, @function\n"
5659 "__interceptor___tls_get_offset:\n"
5660#ifdef __s390x__
5661 "la %r2, 0(%r2,%r12)\n"
5662 "jg __tls_get_addr_hidden\n"
5663#else
5664 "basr %r3,0\n"
5665 "0: la %r2,0(%r2,%r12)\n"
5666 "l %r4,1f-0b(%r3)\n"
5667 "b 0(%r4,%r3)\n"
5668 "1: .long __tls_get_addr_hidden - 0b\n"
5669#endif
5670 ".size __interceptor___tls_get_offset, .-__interceptor___tls_get_offset\n"
5671// Assembly wrapper to call REAL(__tls_get_offset)(arg)
5672 ".type __tls_get_offset_wrapper, @function\n"
5673 "__tls_get_offset_wrapper:\n"
5674#ifdef __s390x__
5675 "sgr %r2,%r12\n"
5676#else
5677 "sr %r2,%r12\n"
5678#endif
5679 "br %r3\n"
5680 ".size __tls_get_offset_wrapper, .-__tls_get_offset_wrapper\n"
5681);
5682#endif
5683
5684#if SANITIZER_INTERCEPT_LISTXATTR
5685INTERCEPTOR(SSIZE_T, listxattr, const char *path, char *list, SIZE_T size) {
5686 void *ctx;
5687 COMMON_INTERCEPTOR_ENTER(ctx, listxattr, path, list, size);
5688 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
5689 // FIXME: under ASan the call below may write to freed memory and corrupt
5690 // its metadata. See
5691 // https://github.com/google/sanitizers/issues/321.
5692 SSIZE_T res = REAL(listxattr)(path, list, size);
5693 // Here and below, size == 0 is a special case where nothing is written to the
5694 // buffer, and res contains the desired buffer size.
5695 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
5696 return res;
5697}
5698INTERCEPTOR(SSIZE_T, llistxattr, const char *path, char *list, SIZE_T size) {
5699 void *ctx;
5700 COMMON_INTERCEPTOR_ENTER(ctx, llistxattr, path, list, size);
5701 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
5702 // FIXME: under ASan the call below may write to freed memory and corrupt
5703 // its metadata. See
5704 // https://github.com/google/sanitizers/issues/321.
5705 SSIZE_T res = REAL(llistxattr)(path, list, size);
5706 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
5707 return res;
5708}
5709INTERCEPTOR(SSIZE_T, flistxattr, int fd, char *list, SIZE_T size) {
5710 void *ctx;
5711 COMMON_INTERCEPTOR_ENTER(ctx, flistxattr, fd, list, size);
5712 // FIXME: under ASan the call below may write to freed memory and corrupt
5713 // its metadata. See
5714 // https://github.com/google/sanitizers/issues/321.
5715 SSIZE_T res = REAL(flistxattr)(fd, list, size);
5716 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
5717 return res;
5718}
5719#define INIT_LISTXATTR \
5720 COMMON_INTERCEPT_FUNCTION(listxattr); \
5721 COMMON_INTERCEPT_FUNCTION(llistxattr); \
5722 COMMON_INTERCEPT_FUNCTION(flistxattr);
5723#else
5724#define INIT_LISTXATTR
5725#endif
5726
5727#if SANITIZER_INTERCEPT_GETXATTR
5728INTERCEPTOR(SSIZE_T, getxattr, const char *path, const char *name, char *value,
5729 SIZE_T size) {
5730 void *ctx;
5731 COMMON_INTERCEPTOR_ENTER(ctx, getxattr, path, name, value, size);
5732 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
5733 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
5734 // FIXME: under ASan the call below may write to freed memory and corrupt
5735 // its metadata. See
5736 // https://github.com/google/sanitizers/issues/321.
5737 SSIZE_T res = REAL(getxattr)(path, name, value, size);
5738 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
5739 return res;
5740}
5741INTERCEPTOR(SSIZE_T, lgetxattr, const char *path, const char *name, char *value,
5742 SIZE_T size) {
5743 void *ctx;
5744 COMMON_INTERCEPTOR_ENTER(ctx, lgetxattr, path, name, value, size);
5745 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
5746 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
5747 // FIXME: under ASan the call below may write to freed memory and corrupt
5748 // its metadata. See
5749 // https://github.com/google/sanitizers/issues/321.
5750 SSIZE_T res = REAL(lgetxattr)(path, name, value, size);
5751 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
5752 return res;
5753}
5754INTERCEPTOR(SSIZE_T, fgetxattr, int fd, const char *name, char *value,
5755 SIZE_T size) {
5756 void *ctx;
5757 COMMON_INTERCEPTOR_ENTER(ctx, fgetxattr, fd, name, value, size);
5758 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
5759 // FIXME: under ASan the call below may write to freed memory and corrupt
5760 // its metadata. See
5761 // https://github.com/google/sanitizers/issues/321.
5762 SSIZE_T res = REAL(fgetxattr)(fd, name, value, size);
5763 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
5764 return res;
5765}
5766#define INIT_GETXATTR \
5767 COMMON_INTERCEPT_FUNCTION(getxattr); \
5768 COMMON_INTERCEPT_FUNCTION(lgetxattr); \
5769 COMMON_INTERCEPT_FUNCTION(fgetxattr);
5770#else
5771#define INIT_GETXATTR
5772#endif
5773
5774#if SANITIZER_INTERCEPT_GETRESID
5775INTERCEPTOR(int, getresuid, void *ruid, void *euid, void *suid) {
5776 void *ctx;
5777 COMMON_INTERCEPTOR_ENTER(ctx, getresuid, ruid, euid, suid);
5778 // FIXME: under ASan the call below may write to freed memory and corrupt
5779 // its metadata. See
5780 // https://github.com/google/sanitizers/issues/321.
5781 int res = REAL(getresuid)(ruid, euid, suid);
5782 if (res >= 0) {
5783 if (ruid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ruid, uid_t_sz);
5784 if (euid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, euid, uid_t_sz);
5785 if (suid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, suid, uid_t_sz);
5786 }
5787 return res;
5788}
5789INTERCEPTOR(int, getresgid, void *rgid, void *egid, void *sgid) {
5790 void *ctx;
5791 COMMON_INTERCEPTOR_ENTER(ctx, getresgid, rgid, egid, sgid);
5792 // FIXME: under ASan the call below may write to freed memory and corrupt
5793 // its metadata. See
5794 // https://github.com/google/sanitizers/issues/321.
5795 int res = REAL(getresgid)(rgid, egid, sgid);
5796 if (res >= 0) {
5797 if (rgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rgid, gid_t_sz);
5798 if (egid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, egid, gid_t_sz);
5799 if (sgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sgid, gid_t_sz);
5800 }
5801 return res;
5802}
5803#define INIT_GETRESID \
5804 COMMON_INTERCEPT_FUNCTION(getresuid); \
5805 COMMON_INTERCEPT_FUNCTION(getresgid);
5806#else
5807#define INIT_GETRESID
5808#endif
5809
5810#if SANITIZER_INTERCEPT_GETIFADDRS
5811// As long as getifaddrs()/freeifaddrs() use calloc()/free(), we don't need to
5812// intercept freeifaddrs(). If that ceases to be the case, we might need to
5813// intercept it to poison the memory again.
5814INTERCEPTOR(int, getifaddrs, __sanitizer_ifaddrs **ifap) {
5815 void *ctx;
5816 COMMON_INTERCEPTOR_ENTER(ctx, getifaddrs, ifap);
5817 // FIXME: under ASan the call below may write to freed memory and corrupt
5818 // its metadata. See
5819 // https://github.com/google/sanitizers/issues/321.
5820 int res = REAL(getifaddrs)(ifap);
5821 if (res == 0 && ifap) {
5822 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifap, sizeof(void *));
5823 __sanitizer_ifaddrs *p = *ifap;
5824 while (p) {
5825 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(__sanitizer_ifaddrs));
5826 if (p->ifa_name)
5827 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_name,
5828 internal_strlen(p->ifa_name) + 1);
5829 if (p->ifa_addr)
5830 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_addr, struct_sockaddr_sz);
5831 if (p->ifa_netmask)
5832 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_netmask, struct_sockaddr_sz);
5833 // On Linux this is a union, but the other member also points to a
5834 // struct sockaddr, so the following is sufficient.
5835 if (p->ifa_dstaddr)
5836 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_dstaddr, struct_sockaddr_sz);
5837 // FIXME(smatveev): Unpoison p->ifa_data as well.
5838 p = p->ifa_next;
5839 }
5840 }
5841 return res;
5842}
5843#define INIT_GETIFADDRS \
5844 COMMON_INTERCEPT_FUNCTION(getifaddrs);
5845#else
5846#define INIT_GETIFADDRS
5847#endif
5848
5849#if SANITIZER_INTERCEPT_IF_INDEXTONAME
5850INTERCEPTOR(char *, if_indextoname, unsigned int ifindex, char* ifname) {
5851 void *ctx;
5852 COMMON_INTERCEPTOR_ENTER(ctx, if_indextoname, ifindex, ifname);
5853 // FIXME: under ASan the call below may write to freed memory and corrupt
5854 // its metadata. See
5855 // https://github.com/google/sanitizers/issues/321.
5856 char *res = REAL(if_indextoname)(ifindex, ifname);
5857 if (res && ifname)
5858 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifname, internal_strlen(ifname) + 1);
5859 return res;
5860}
5861INTERCEPTOR(unsigned int, if_nametoindex, const char* ifname) {
5862 void *ctx;
5863 COMMON_INTERCEPTOR_ENTER(ctx, if_nametoindex, ifname);
5864 if (ifname)
5865 COMMON_INTERCEPTOR_READ_RANGE(ctx, ifname, internal_strlen(ifname) + 1);
5866 return REAL(if_nametoindex)(ifname);
5867}
5868#define INIT_IF_INDEXTONAME \
5869 COMMON_INTERCEPT_FUNCTION(if_indextoname); \
5870 COMMON_INTERCEPT_FUNCTION(if_nametoindex);
5871#else
5872#define INIT_IF_INDEXTONAME
5873#endif
5874
5875#if SANITIZER_INTERCEPT_CAPGET
5876INTERCEPTOR(int, capget, void *hdrp, void *datap) {
5877 void *ctx;
5878 COMMON_INTERCEPTOR_ENTER(ctx, capget, hdrp, datap);
5879 if (hdrp)
5880 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz);
5881 // FIXME: under ASan the call below may write to freed memory and corrupt
5882 // its metadata. See
5883 // https://github.com/google/sanitizers/issues/321.
5884 int res = REAL(capget)(hdrp, datap);
5885 if (res == 0 && datap) {
5886 unsigned datasz = __user_cap_data_struct_sz(hdrp);
5887 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datap, datasz);
5888 }
5889 // We can also return -1 and write to hdrp->version if the version passed in
5890 // hdrp->version is unsupported. But that's not a trivial condition to check,
5891 // and anyway COMMON_INTERCEPTOR_READ_RANGE protects us to some extent.
5892 return res;
5893}
5894INTERCEPTOR(int, capset, void *hdrp, const void *datap) {
5895 void *ctx;
5896 COMMON_INTERCEPTOR_ENTER(ctx, capset, hdrp, datap);
5897 if (hdrp)
5898 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz);
5899 if (datap) {
5900 unsigned datasz = __user_cap_data_struct_sz(hdrp);
5901 COMMON_INTERCEPTOR_READ_RANGE(ctx, datap, datasz);
5902 }
5903 return REAL(capset)(hdrp, datap);
5904}
5905#define INIT_CAPGET \
5906 COMMON_INTERCEPT_FUNCTION(capget); \
5907 COMMON_INTERCEPT_FUNCTION(capset);
5908#else
5909#define INIT_CAPGET
5910#endif
5911
5912#if SANITIZER_INTERCEPT_FTIME
5913INTERCEPTOR(int, ftime, __sanitizer_timeb *tp) {
5914 void *ctx;
5915 COMMON_INTERCEPTOR_ENTER(ctx, ftime, tp);
5916 // FIXME: under ASan the call below may write to freed memory and corrupt
5917 // its metadata. See
5918 // https://github.com/google/sanitizers/issues/321.
5919 int res = REAL(ftime)(tp);
5920 if (tp)
5921 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, sizeof(*tp));
5922 return res;
5923}
5924#define INIT_FTIME COMMON_INTERCEPT_FUNCTION(ftime);
5925#else
5926#define INIT_FTIME
5927#endif // SANITIZER_INTERCEPT_FTIME
5928
5929#if SANITIZER_INTERCEPT_XDR
5930INTERCEPTOR(void, xdrmem_create, __sanitizer_XDR *xdrs, uptr addr,
5931 unsigned size, int op) {
5932 void *ctx;
5933 COMMON_INTERCEPTOR_ENTER(ctx, xdrmem_create, xdrs, addr, size, op);
5934 // FIXME: under ASan the call below may write to freed memory and corrupt
5935 // its metadata. See
5936 // https://github.com/google/sanitizers/issues/321.
5937 REAL(xdrmem_create)(xdrs, addr, size, op);
5938 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs));
5939 if (op == __sanitizer_XDR_ENCODE) {
5940 // It's not obvious how much data individual xdr_ routines write.
5941 // Simply unpoison the entire target buffer in advance.
5942 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (void *)addr, size);
5943 }
5944}
5945
5946INTERCEPTOR(void, xdrstdio_create, __sanitizer_XDR *xdrs, void *file, int op) {
5947 void *ctx;
5948 COMMON_INTERCEPTOR_ENTER(ctx, xdrstdio_create, xdrs, file, op);
5949 // FIXME: under ASan the call below may write to freed memory and corrupt
5950 // its metadata. See
5951 // https://github.com/google/sanitizers/issues/321.
5952 REAL(xdrstdio_create)(xdrs, file, op);
5953 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs));
5954}
5955
5956// FIXME: under ASan the call below may write to freed memory and corrupt
5957// its metadata. See
5958// https://github.com/google/sanitizers/issues/321.
5959#define XDR_INTERCEPTOR(F, T) \
5960 INTERCEPTOR(int, F, __sanitizer_XDR *xdrs, T *p) { \
5961 void *ctx; \
5962 COMMON_INTERCEPTOR_ENTER(ctx, F, xdrs, p); \
5963 if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) \
5964 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); \
5965 int res = REAL(F)(xdrs, p); \
5966 if (res && p && xdrs->x_op == __sanitizer_XDR_DECODE) \
5967 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); \
5968 return res; \
5969 }
5970
5971XDR_INTERCEPTOR(xdr_short, short)
5972XDR_INTERCEPTOR(xdr_u_short, unsigned short)
5973XDR_INTERCEPTOR(xdr_int, int)
5974XDR_INTERCEPTOR(xdr_u_int, unsigned)
5975XDR_INTERCEPTOR(xdr_long, long)
5976XDR_INTERCEPTOR(xdr_u_long, unsigned long)
5977XDR_INTERCEPTOR(xdr_hyper, long long)
5978XDR_INTERCEPTOR(xdr_u_hyper, unsigned long long)
5979XDR_INTERCEPTOR(xdr_longlong_t, long long)
5980XDR_INTERCEPTOR(xdr_u_longlong_t, unsigned long long)
5981XDR_INTERCEPTOR(xdr_int8_t, u8)
5982XDR_INTERCEPTOR(xdr_uint8_t, u8)
5983XDR_INTERCEPTOR(xdr_int16_t, u16)
5984XDR_INTERCEPTOR(xdr_uint16_t, u16)
5985XDR_INTERCEPTOR(xdr_int32_t, u32)
5986XDR_INTERCEPTOR(xdr_uint32_t, u32)
5987XDR_INTERCEPTOR(xdr_int64_t, u64)
5988XDR_INTERCEPTOR(xdr_uint64_t, u64)
5989XDR_INTERCEPTOR(xdr_quad_t, long long)
5990XDR_INTERCEPTOR(xdr_u_quad_t, unsigned long long)
5991XDR_INTERCEPTOR(xdr_bool, bool)
5992XDR_INTERCEPTOR(xdr_enum, int)
5993XDR_INTERCEPTOR(xdr_char, char)
5994XDR_INTERCEPTOR(xdr_u_char, unsigned char)
5995XDR_INTERCEPTOR(xdr_float, float)
5996XDR_INTERCEPTOR(xdr_double, double)
5997
5998// FIXME: intercept xdr_array, opaque, union, vector, reference, pointer,
5999// wrapstring, sizeof
6000
6001INTERCEPTOR(int, xdr_bytes, __sanitizer_XDR *xdrs, char **p, unsigned *sizep,
6002 unsigned maxsize) {
6003 void *ctx;
6004 COMMON_INTERCEPTOR_ENTER(ctx, xdr_bytes, xdrs, p, sizep, maxsize);
6005 if (p && sizep && xdrs->x_op == __sanitizer_XDR_ENCODE) {
6006 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p));
6007 COMMON_INTERCEPTOR_READ_RANGE(ctx, sizep, sizeof(*sizep));
6008 COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, *sizep);
6009 }
6010 // FIXME: under ASan the call below may write to freed memory and corrupt
6011 // its metadata. See
6012 // https://github.com/google/sanitizers/issues/321.
6013 int res = REAL(xdr_bytes)(xdrs, p, sizep, maxsize);
6014 if (p && sizep && xdrs->x_op == __sanitizer_XDR_DECODE) {
6015 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
6016 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizep, sizeof(*sizep));
6017 if (res && *p && *sizep) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, *sizep);
6018 }
6019 return res;
6020}
6021
6022INTERCEPTOR(int, xdr_string, __sanitizer_XDR *xdrs, char **p,
6023 unsigned maxsize) {
6024 void *ctx;
6025 COMMON_INTERCEPTOR_ENTER(ctx, xdr_string, xdrs, p, maxsize);
6026 if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) {
6027 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p));
6028 COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, internal_strlen(*p) + 1);
6029 }
6030 // FIXME: under ASan the call below may write to freed memory and corrupt
6031 // its metadata. See
6032 // https://github.com/google/sanitizers/issues/321.
6033 int res = REAL(xdr_string)(xdrs, p, maxsize);
6034 if (p && xdrs->x_op == __sanitizer_XDR_DECODE) {
6035 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
6036 if (res && *p)
6037 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1);
6038 }
6039 return res;
6040}
6041
6042#define INIT_XDR \
6043 COMMON_INTERCEPT_FUNCTION(xdrmem_create); \
6044 COMMON_INTERCEPT_FUNCTION(xdrstdio_create); \
6045 COMMON_INTERCEPT_FUNCTION(xdr_short); \
6046 COMMON_INTERCEPT_FUNCTION(xdr_u_short); \
6047 COMMON_INTERCEPT_FUNCTION(xdr_int); \
6048 COMMON_INTERCEPT_FUNCTION(xdr_u_int); \
6049 COMMON_INTERCEPT_FUNCTION(xdr_long); \
6050 COMMON_INTERCEPT_FUNCTION(xdr_u_long); \
6051 COMMON_INTERCEPT_FUNCTION(xdr_hyper); \
6052 COMMON_INTERCEPT_FUNCTION(xdr_u_hyper); \
6053 COMMON_INTERCEPT_FUNCTION(xdr_longlong_t); \
6054 COMMON_INTERCEPT_FUNCTION(xdr_u_longlong_t); \
6055 COMMON_INTERCEPT_FUNCTION(xdr_int8_t); \
6056 COMMON_INTERCEPT_FUNCTION(xdr_uint8_t); \
6057 COMMON_INTERCEPT_FUNCTION(xdr_int16_t); \
6058 COMMON_INTERCEPT_FUNCTION(xdr_uint16_t); \
6059 COMMON_INTERCEPT_FUNCTION(xdr_int32_t); \
6060 COMMON_INTERCEPT_FUNCTION(xdr_uint32_t); \
6061 COMMON_INTERCEPT_FUNCTION(xdr_int64_t); \
6062 COMMON_INTERCEPT_FUNCTION(xdr_uint64_t); \
6063 COMMON_INTERCEPT_FUNCTION(xdr_quad_t); \
6064 COMMON_INTERCEPT_FUNCTION(xdr_u_quad_t); \
6065 COMMON_INTERCEPT_FUNCTION(xdr_bool); \
6066 COMMON_INTERCEPT_FUNCTION(xdr_enum); \
6067 COMMON_INTERCEPT_FUNCTION(xdr_char); \
6068 COMMON_INTERCEPT_FUNCTION(xdr_u_char); \
6069 COMMON_INTERCEPT_FUNCTION(xdr_float); \
6070 COMMON_INTERCEPT_FUNCTION(xdr_double); \
6071 COMMON_INTERCEPT_FUNCTION(xdr_bytes); \
6072 COMMON_INTERCEPT_FUNCTION(xdr_string);
6073#else
6074#define INIT_XDR
6075#endif // SANITIZER_INTERCEPT_XDR
6076
6077#if SANITIZER_INTERCEPT_XDRREC
6078typedef int (*xdrrec_cb)(char*, char*, int);
6079struct XdrRecWrapper {
6080 char *handle;
6081 xdrrec_cb rd, wr;
6082};
6083typedef AddrHashMap<XdrRecWrapper *, 11> XdrRecWrapMap;
6084static XdrRecWrapMap *xdrrec_wrap_map;
6085
6086static int xdrrec_wr_wrap(char *handle, char *buf, int count) {
6087 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
6088 COMMON_INTERCEPTOR_INITIALIZE_RANGE(buf, count);
6089 XdrRecWrapper *wrap = (XdrRecWrapper *)handle;
6090 return wrap->wr(wrap->handle, buf, count);
6091}
6092
6093static int xdrrec_rd_wrap(char *handle, char *buf, int count) {
6094 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
6095 XdrRecWrapper *wrap = (XdrRecWrapper *)handle;
6096 return wrap->rd(wrap->handle, buf, count);
6097}
6098
6099// This doesn't apply to the solaris version as it has a different function
6100// signature.
6101INTERCEPTOR(void, xdrrec_create, __sanitizer_XDR *xdr, unsigned sndsize,
6102 unsigned rcvsize, char *handle, int (*rd)(char*, char*, int),
6103 int (*wr)(char*, char*, int)) {
6104 void *ctx;
6105 COMMON_INTERCEPTOR_ENTER(ctx, xdrrec_create, xdr, sndsize, rcvsize,
6106 handle, rd, wr);
6107 COMMON_INTERCEPTOR_READ_RANGE(ctx, &xdr->x_op, sizeof xdr->x_op);
6108
6109 // We can't allocate a wrapper on the stack, as the handle is used outside
6110 // this stack frame. So we put it on the heap, and keep track of it with
6111 // the HashMap (keyed by x_private). When we later need to xdr_destroy,
6112 // we can index the map, free the wrapper, and then clean the map entry.
6113 XdrRecWrapper *wrap_data =
6114 (XdrRecWrapper *)InternalAlloc(sizeof(XdrRecWrapper));
6115 wrap_data->handle = handle;
6116 wrap_data->rd = rd;
6117 wrap_data->wr = wr;
6118 if (wr)
6119 wr = xdrrec_wr_wrap;
6120 if (rd)
6121 rd = xdrrec_rd_wrap;
6122 handle = (char *)wrap_data;
6123
6124 REAL(xdrrec_create)(xdr, sndsize, rcvsize, handle, rd, wr);
6125 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdr, sizeof *xdr);
6126
6127 XdrRecWrapMap::Handle wrap(xdrrec_wrap_map, xdr->x_private, false, true);
6128 *wrap = wrap_data;
6129}
6130
6131// We have to intercept this to be able to free wrapper memory;
6132// otherwise it's not necessary.
6133INTERCEPTOR(void, xdr_destroy, __sanitizer_XDR *xdr) {
6134 void *ctx;
6135 COMMON_INTERCEPTOR_ENTER(ctx, xdr_destroy, xdr);
6136
6137 XdrRecWrapMap::Handle wrap(xdrrec_wrap_map, xdr->x_private, true);
6138 InternalFree(*wrap);
6139 REAL(xdr_destroy)(xdr);
6140}
6141#define INIT_XDRREC_LINUX \
6142 static u64 xdrrec_wrap_mem[sizeof(XdrRecWrapMap) / sizeof(u64) + 1]; \
6143 xdrrec_wrap_map = new ((void *)&xdrrec_wrap_mem) XdrRecWrapMap(); \
6144 COMMON_INTERCEPT_FUNCTION(xdrrec_create); \
6145 COMMON_INTERCEPT_FUNCTION(xdr_destroy);
6146#else
6147#define INIT_XDRREC_LINUX
6148#endif
6149
6150#if SANITIZER_INTERCEPT_TSEARCH
6151INTERCEPTOR(void *, tsearch, void *key, void **rootp,
6152 int (*compar)(const void *, const void *)) {
6153 void *ctx;
6154 COMMON_INTERCEPTOR_ENTER(ctx, tsearch, key, rootp, compar);
6155 // FIXME: under ASan the call below may write to freed memory and corrupt
6156 // its metadata. See
6157 // https://github.com/google/sanitizers/issues/321.
6158 void *res = REAL(tsearch)(key, rootp, compar);
6159 if (res && *(void **)res == key)
6160 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(void *));
6161 return res;
6162}
6163#define INIT_TSEARCH COMMON_INTERCEPT_FUNCTION(tsearch);
6164#else
6165#define INIT_TSEARCH
6166#endif
6167
6168#if SANITIZER_INTERCEPT_LIBIO_INTERNALS || SANITIZER_INTERCEPT_FOPEN || \
6169 SANITIZER_INTERCEPT_OPEN_MEMSTREAM
6170void unpoison_file(__sanitizer_FILE *fp) {
6171#if SANITIZER_HAS_STRUCT_FILE
6172 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp, sizeof(*fp));
6173#if SANITIZER_NETBSD
6174 if (fp->_bf._base && fp->_bf._size > 0)
6175 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_bf._base,
6176 fp->_bf._size);
6177#else
6178 if (fp->_IO_read_base && fp->_IO_read_base < fp->_IO_read_end)
6179 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_read_base,
6180 fp->_IO_read_end - fp->_IO_read_base);
6181 if (fp->_IO_write_base && fp->_IO_write_base < fp->_IO_write_end)
6182 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_write_base,
6183 fp->_IO_write_end - fp->_IO_write_base);
6184#endif
6185#endif // SANITIZER_HAS_STRUCT_FILE
6186}
6187#endif
6188
6189#if SANITIZER_INTERCEPT_LIBIO_INTERNALS
6190// These guys are called when a .c source is built with -O2.
6191INTERCEPTOR(int, __uflow, __sanitizer_FILE *fp) {
6192 void *ctx;
6193 COMMON_INTERCEPTOR_ENTER(ctx, __uflow, fp);
6194 int res = REAL(__uflow)(fp);
6195 unpoison_file(fp);
6196 return res;
6197}
6198INTERCEPTOR(int, __underflow, __sanitizer_FILE *fp) {
6199 void *ctx;
6200 COMMON_INTERCEPTOR_ENTER(ctx, __underflow, fp);
6201 int res = REAL(__underflow)(fp);
6202 unpoison_file(fp);
6203 return res;
6204}
6205INTERCEPTOR(int, __overflow, __sanitizer_FILE *fp, int ch) {
6206 void *ctx;
6207 COMMON_INTERCEPTOR_ENTER(ctx, __overflow, fp, ch);
6208 int res = REAL(__overflow)(fp, ch);
6209 unpoison_file(fp);
6210 return res;
6211}
6212INTERCEPTOR(int, __wuflow, __sanitizer_FILE *fp) {
6213 void *ctx;
6214 COMMON_INTERCEPTOR_ENTER(ctx, __wuflow, fp);
6215 int res = REAL(__wuflow)(fp);
6216 unpoison_file(fp);
6217 return res;
6218}
6219INTERCEPTOR(int, __wunderflow, __sanitizer_FILE *fp) {
6220 void *ctx;
6221 COMMON_INTERCEPTOR_ENTER(ctx, __wunderflow, fp);
6222 int res = REAL(__wunderflow)(fp);
6223 unpoison_file(fp);
6224 return res;
6225}
6226INTERCEPTOR(int, __woverflow, __sanitizer_FILE *fp, int ch) {
6227 void *ctx;
6228 COMMON_INTERCEPTOR_ENTER(ctx, __woverflow, fp, ch);
6229 int res = REAL(__woverflow)(fp, ch);
6230 unpoison_file(fp);
6231 return res;
6232}
6233#define INIT_LIBIO_INTERNALS \
6234 COMMON_INTERCEPT_FUNCTION(__uflow); \
6235 COMMON_INTERCEPT_FUNCTION(__underflow); \
6236 COMMON_INTERCEPT_FUNCTION(__overflow); \
6237 COMMON_INTERCEPT_FUNCTION(__wuflow); \
6238 COMMON_INTERCEPT_FUNCTION(__wunderflow); \
6239 COMMON_INTERCEPT_FUNCTION(__woverflow);
6240#else
6241#define INIT_LIBIO_INTERNALS
6242#endif
6243
6244#if SANITIZER_INTERCEPT_FOPEN
6245INTERCEPTOR(__sanitizer_FILE *, fopen, const char *path, const char *mode) {
6246 void *ctx;
6247 COMMON_INTERCEPTOR_ENTER(ctx, fopen, path, mode);
6248 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6249 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6250 __sanitizer_FILE *res = REAL(fopen)(path, mode);
6251 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
6252 if (res) unpoison_file(res);
6253 return res;
6254}
6255INTERCEPTOR(__sanitizer_FILE *, fdopen, int fd, const char *mode) {
6256 void *ctx;
6257 COMMON_INTERCEPTOR_ENTER(ctx, fdopen, fd, mode);
6258 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6259 __sanitizer_FILE *res = REAL(fdopen)(fd, mode);
6260 if (res) unpoison_file(res);
6261 return res;
6262}
6263INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode,
6264 __sanitizer_FILE *fp) {
6265 void *ctx;
6266 COMMON_INTERCEPTOR_ENTER(ctx, freopen, path, mode, fp);
6267 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6268 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6269 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
6270 __sanitizer_FILE *res = REAL(freopen)(path, mode, fp);
6271 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
6272 if (res) unpoison_file(res);
6273 return res;
6274}
6275#define INIT_FOPEN \
6276 COMMON_INTERCEPT_FUNCTION(fopen); \
6277 COMMON_INTERCEPT_FUNCTION(fdopen); \
6278 COMMON_INTERCEPT_FUNCTION(freopen);
6279#else
6280#define INIT_FOPEN
6281#endif
6282
6283#if SANITIZER_INTERCEPT_FLOPEN
6284INTERCEPTOR(int, flopen, const char *path, int flags, ...) {
6285 void *ctx;
6286 va_list ap;
6287 va_start(ap, flags);
6288 u16 mode = static_cast<u16>(va_arg(ap, u32));
6289 va_end(ap);
6290 COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode);
6291 if (path) {
6292 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6293 }
6294 return COMMON_INTERCEPTOR_BLOCK_REAL(flopen)(path, flags, mode);
6295}
6296
6297INTERCEPTOR(int, flopenat, int dirfd, const char *path, int flags, ...) {
6298 void *ctx;
6299 va_list ap;
6300 va_start(ap, flags);
6301 u16 mode = static_cast<u16>(va_arg(ap, u32));
6302 va_end(ap);
6303 COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode);
6304 if (path) {
6305 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6306 }
6307 return COMMON_INTERCEPTOR_BLOCK_REAL(flopenat)(dirfd, path, flags, mode);
6308}
6309
6310#define INIT_FLOPEN \
6311 COMMON_INTERCEPT_FUNCTION(flopen); \
6312 COMMON_INTERCEPT_FUNCTION(flopenat);
6313#else
6314#define INIT_FLOPEN
6315#endif
6316
6317#if SANITIZER_INTERCEPT_FOPEN64
6318INTERCEPTOR(__sanitizer_FILE *, fopen64, const char *path, const char *mode) {
6319 void *ctx;
6320 COMMON_INTERCEPTOR_ENTER(ctx, fopen64, path, mode);
6321 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6322 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6323 __sanitizer_FILE *res = REAL(fopen64)(path, mode);
6324 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
6325 if (res) unpoison_file(res);
6326 return res;
6327}
6328INTERCEPTOR(__sanitizer_FILE *, freopen64, const char *path, const char *mode,
6329 __sanitizer_FILE *fp) {
6330 void *ctx;
6331 COMMON_INTERCEPTOR_ENTER(ctx, freopen64, path, mode, fp);
6332 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6333 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6334 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
6335 __sanitizer_FILE *res = REAL(freopen64)(path, mode, fp);
6336 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
6337 if (res) unpoison_file(res);
6338 return res;
6339}
6340#define INIT_FOPEN64 \
6341 COMMON_INTERCEPT_FUNCTION(fopen64); \
6342 COMMON_INTERCEPT_FUNCTION(freopen64);
6343#else
6344#define INIT_FOPEN64
6345#endif
6346
6347#if SANITIZER_INTERCEPT_OPEN_MEMSTREAM
6348INTERCEPTOR(__sanitizer_FILE *, open_memstream, char **ptr, SIZE_T *sizeloc) {
6349 void *ctx;
6350 COMMON_INTERCEPTOR_ENTER(ctx, open_memstream, ptr, sizeloc);
6351 // FIXME: under ASan the call below may write to freed memory and corrupt
6352 // its metadata. See
6353 // https://github.com/google/sanitizers/issues/321.
6354 __sanitizer_FILE *res = REAL(open_memstream)(ptr, sizeloc);
6355 if (res) {
6356 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr));
6357 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc));
6358 unpoison_file(res);
6359 FileMetadata file = {ptr, sizeloc};
6360 SetInterceptorMetadata(res, file);
6361 }
6362 return res;
6363}
6364INTERCEPTOR(__sanitizer_FILE *, open_wmemstream, wchar_t **ptr,
6365 SIZE_T *sizeloc) {
6366 void *ctx;
6367 COMMON_INTERCEPTOR_ENTER(ctx, open_wmemstream, ptr, sizeloc);
6368 __sanitizer_FILE *res = REAL(open_wmemstream)(ptr, sizeloc);
6369 if (res) {
6370 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr));
6371 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc));
6372 unpoison_file(res);
6373 FileMetadata file = {(char **)ptr, sizeloc};
6374 SetInterceptorMetadata(res, file);
6375 }
6376 return res;
6377}
6378INTERCEPTOR(__sanitizer_FILE *, fmemopen, void *buf, SIZE_T size,
6379 const char *mode) {
6380 void *ctx;
6381 COMMON_INTERCEPTOR_ENTER(ctx, fmemopen, buf, size, mode);
6382 // FIXME: under ASan the call below may write to freed memory and corrupt
6383 // its metadata. See
6384 // https://github.com/google/sanitizers/issues/321.
6385 __sanitizer_FILE *res = REAL(fmemopen)(buf, size, mode);
6386 if (res) unpoison_file(res);
6387 return res;
6388}
6389#define INIT_OPEN_MEMSTREAM \
6390 COMMON_INTERCEPT_FUNCTION(open_memstream); \
6391 COMMON_INTERCEPT_FUNCTION(open_wmemstream); \
6392 COMMON_INTERCEPT_FUNCTION(fmemopen);
6393#else
6394#define INIT_OPEN_MEMSTREAM
6395#endif
6396
6397#if SANITIZER_INTERCEPT_OBSTACK
6398static void initialize_obstack(__sanitizer_obstack *obstack) {
6399 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack, sizeof(*obstack));
6400 if (obstack->chunk)
6401 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack->chunk,
6402 sizeof(*obstack->chunk));
6403}
6404
6405INTERCEPTOR(int, _obstack_begin_1, __sanitizer_obstack *obstack, int sz,
6406 int align, void *(*alloc_fn)(uptr arg, uptr sz),
6407 void (*free_fn)(uptr arg, void *p)) {
6408 void *ctx;
6409 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin_1, obstack, sz, align, alloc_fn,
6410 free_fn);
6411 int res = REAL(_obstack_begin_1)(obstack, sz, align, alloc_fn, free_fn);
6412 if (res) initialize_obstack(obstack);
6413 return res;
6414}
6415INTERCEPTOR(int, _obstack_begin, __sanitizer_obstack *obstack, int sz,
6416 int align, void *(*alloc_fn)(uptr sz), void (*free_fn)(void *p)) {
6417 void *ctx;
6418 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin, obstack, sz, align, alloc_fn,
6419 free_fn);
6420 int res = REAL(_obstack_begin)(obstack, sz, align, alloc_fn, free_fn);
6421 if (res) initialize_obstack(obstack);
6422 return res;
6423}
6424INTERCEPTOR(void, _obstack_newchunk, __sanitizer_obstack *obstack, int length) {
6425 void *ctx;
6426 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_newchunk, obstack, length);
6427 REAL(_obstack_newchunk)(obstack, length);
6428 if (obstack->chunk)
6429 COMMON_INTERCEPTOR_INITIALIZE_RANGE(
6430 obstack->chunk, obstack->next_free - (char *)obstack->chunk);
6431}
6432#define INIT_OBSTACK \
6433 COMMON_INTERCEPT_FUNCTION(_obstack_begin_1); \
6434 COMMON_INTERCEPT_FUNCTION(_obstack_begin); \
6435 COMMON_INTERCEPT_FUNCTION(_obstack_newchunk);
6436#else
6437#define INIT_OBSTACK
6438#endif
6439
6440#if SANITIZER_INTERCEPT_FFLUSH
6441INTERCEPTOR(int, fflush, __sanitizer_FILE *fp) {
6442 void *ctx;
6443 COMMON_INTERCEPTOR_ENTER(ctx, fflush, fp);
6444 if (fp)
6445 unpoison_file(fp);
6446 int res = REAL(fflush)(fp);
6447 // FIXME: handle fp == NULL
6448 if (fp) {
6449 const FileMetadata *m = GetInterceptorMetadata(fp);
6450 if (m) COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
6451 }
6452 return res;
6453}
6454#define INIT_FFLUSH COMMON_INTERCEPT_FUNCTION(fflush);
6455#else
6456#define INIT_FFLUSH
6457#endif
6458
6459#if SANITIZER_INTERCEPT_FCLOSE
6460INTERCEPTOR(int, fclose, __sanitizer_FILE *fp) {
6461 void *ctx;
6462 COMMON_INTERCEPTOR_ENTER(ctx, fclose, fp);
6463 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
6464 const FileMetadata *m = GetInterceptorMetadata(fp);
6465 if (fp)
6466 unpoison_file(fp);
6467 int res = REAL(fclose)(fp);
6468 if (m) {
6469 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
6470 DeleteInterceptorMetadata(fp);
6471 }
6472 return res;
6473}
6474#define INIT_FCLOSE COMMON_INTERCEPT_FUNCTION(fclose);
6475#else
6476#define INIT_FCLOSE
6477#endif
6478
6479#if SANITIZER_INTERCEPT_DLOPEN_DLCLOSE
6480INTERCEPTOR(void*, dlopen, const char *filename, int flag) {
6481 void *ctx;
6482 COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlopen, filename, flag);
6483
6484 if (filename) {
6485 COMMON_INTERCEPTOR_READ_STRING(ctx, filename, 0);
6486
6487# if !SANITIZER_DYNAMIC
6488 // We care about a very specific use-case: dladdr on
6489 // statically-linked ASan may return <main program>
6490 // instead of the library.
6491 // We therefore only take effect if the sanitizer is statically
6492 // linked, and we don't bother canonicalizing paths because
6493 // dladdr should return the same address both times (we assume
6494 // the user did not canonicalize the result from dladdr).
6495 if (common_flags()->test_only_replace_dlopen_main_program) {
6496 VPrintf(1, "dlopen interceptor: filename: %s\n", filename);
6497
6498 const char *SelfFName = DladdrSelfFName();
6499 VPrintf(1, "dlopen interceptor: DladdrSelfFName: %p %s\n",
6500 (const void *)SelfFName, SelfFName);
6501
6502 if (SelfFName && internal_strcmp(SelfFName, filename) == 0) {
6503 // It's possible they copied the string from dladdr, so
6504 // we do a string comparison rather than pointer comparison.
6505 VPrintf(1, "dlopen interceptor: replacing %s because it matches %s\n",
6506 filename, SelfFName);
6507 filename = (char *)0; // RTLD_DEFAULT
6508 }
6509 }
6510# endif // !SANITIZER_DYNAMIC
6511 }
6512
6513 void *res = COMMON_INTERCEPTOR_DLOPEN(filename, flag);
6514 Symbolizer::GetOrInit()->InvalidateModuleList();
6515 COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, res);
6516 return res;
6517}
6518
6519INTERCEPTOR(int, dlclose, void *handle) {
6520 void *ctx;
6521 COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlclose, handle);
6522 int res = REAL(dlclose)(handle);
6523 Symbolizer::GetOrInit()->InvalidateModuleList();
6524 COMMON_INTERCEPTOR_LIBRARY_UNLOADED();
6525 return res;
6526}
6527#define INIT_DLOPEN_DLCLOSE \
6528 COMMON_INTERCEPT_FUNCTION(dlopen); \
6529 COMMON_INTERCEPT_FUNCTION(dlclose);
6530#else
6531#define INIT_DLOPEN_DLCLOSE
6532#endif
6533
6534#if SANITIZER_INTERCEPT_GETPASS
6535INTERCEPTOR(char *, getpass, const char *prompt) {
6536 void *ctx;
6537 COMMON_INTERCEPTOR_ENTER(ctx, getpass, prompt);
6538 if (prompt)
6539 COMMON_INTERCEPTOR_READ_RANGE(ctx, prompt, internal_strlen(prompt)+1);
6540 char *res = REAL(getpass)(prompt);
6541 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res)+1);
6542 return res;
6543}
6544
6545#define INIT_GETPASS COMMON_INTERCEPT_FUNCTION(getpass);
6546#else
6547#define INIT_GETPASS
6548#endif
6549
6550#if SANITIZER_INTERCEPT_TIMERFD
6551INTERCEPTOR(int, timerfd_settime, int fd, int flags, void *new_value,
6552 void *old_value) {
6553 void *ctx;
6554 COMMON_INTERCEPTOR_ENTER(ctx, timerfd_settime, fd, flags, new_value,
6555 old_value);
6556 COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, struct_itimerspec_sz);
6557 int res = REAL(timerfd_settime)(fd, flags, new_value, old_value);
6558 if (res != -1 && old_value)
6559 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerspec_sz);
6560 return res;
6561}
6562
6563INTERCEPTOR(int, timerfd_gettime, int fd, void *curr_value) {
6564 void *ctx;
6565 COMMON_INTERCEPTOR_ENTER(ctx, timerfd_gettime, fd, curr_value);
6566 int res = REAL(timerfd_gettime)(fd, curr_value);
6567 if (res != -1 && curr_value)
6568 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerspec_sz);
6569 return res;
6570}
6571#define INIT_TIMERFD \
6572 COMMON_INTERCEPT_FUNCTION(timerfd_settime); \
6573 COMMON_INTERCEPT_FUNCTION(timerfd_gettime);
6574#else
6575#define INIT_TIMERFD
6576#endif
6577
6578#if SANITIZER_INTERCEPT_MLOCKX
6579// Linux kernel has a bug that leads to kernel deadlock if a process
6580// maps TBs of memory and then calls mlock().
6581static void MlockIsUnsupported() {
6582 static atomic_uint8_t printed;
6583 if (atomic_exchange(&printed, 1, memory_order_relaxed))
6584 return;
6585 VPrintf(1, "%s ignores mlock/mlockall/munlock/munlockall\n",
6586 SanitizerToolName);
6587}
6588
6589INTERCEPTOR(int, mlock, const void *addr, usize len) {
6590 MlockIsUnsupported();
6591 return 0;
6592}
6593
6594INTERCEPTOR(int, munlock, const void *addr, usize len) {
6595 MlockIsUnsupported();
6596 return 0;
6597}
6598
6599INTERCEPTOR(int, mlockall, int flags) {
6600 MlockIsUnsupported();
6601 return 0;
6602}
6603
6604INTERCEPTOR(int, munlockall, void) {
6605 MlockIsUnsupported();
6606 return 0;
6607}
6608
6609#define INIT_MLOCKX \
6610 COMMON_INTERCEPT_FUNCTION(mlock); \
6611 COMMON_INTERCEPT_FUNCTION(munlock); \
6612 COMMON_INTERCEPT_FUNCTION(mlockall); \
6613 COMMON_INTERCEPT_FUNCTION(munlockall);
6614
6615#else
6616#define INIT_MLOCKX
6617#endif // SANITIZER_INTERCEPT_MLOCKX
6618
6619#if SANITIZER_INTERCEPT_FOPENCOOKIE
6620struct WrappedCookie {
6621 void *real_cookie;
6622 __sanitizer_cookie_io_functions_t real_io_funcs;
6623};
6624
6625static uptr wrapped_read(void *cookie, char *buf, uptr size) {
6626 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
6627 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie;
6628 __sanitizer_cookie_io_read real_read = wrapped_cookie->real_io_funcs.read;
6629 return real_read ? real_read(wrapped_cookie->real_cookie, buf, size) : 0;
6630}
6631
6632static uptr wrapped_write(void *cookie, const char *buf, uptr size) {
6633 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
6634 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie;
6635 __sanitizer_cookie_io_write real_write = wrapped_cookie->real_io_funcs.write;
6636 return real_write ? real_write(wrapped_cookie->real_cookie, buf, size) : size;
6637}
6638
6639static int wrapped_seek(void *cookie, u64 *offset, int whence) {
6640 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
6641 COMMON_INTERCEPTOR_INITIALIZE_RANGE(offset, sizeof(*offset));
6642 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie;
6643 __sanitizer_cookie_io_seek real_seek = wrapped_cookie->real_io_funcs.seek;
6644 return real_seek ? real_seek(wrapped_cookie->real_cookie, offset, whence)
6645 : -1;
6646}
6647
6648static int wrapped_close(void *cookie) {
6649 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
6650 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie;
6651 __sanitizer_cookie_io_close real_close = wrapped_cookie->real_io_funcs.close;
6652 int res = real_close ? real_close(wrapped_cookie->real_cookie) : 0;
6653 InternalFree(wrapped_cookie);
6654 return res;
6655}
6656
6657INTERCEPTOR(__sanitizer_FILE *, fopencookie, void *cookie, const char *mode,
6658 __sanitizer_cookie_io_functions_t io_funcs) {
6659 void *ctx;
6660 COMMON_INTERCEPTOR_ENTER(ctx, fopencookie, cookie, mode, io_funcs);
6661 WrappedCookie *wrapped_cookie =
6662 (WrappedCookie *)InternalAlloc(sizeof(WrappedCookie));
6663 wrapped_cookie->real_cookie = cookie;
6664 wrapped_cookie->real_io_funcs = io_funcs;
6665 __sanitizer_FILE *res =
6666 REAL(fopencookie)(wrapped_cookie, mode, {wrapped_read, wrapped_write,
6667 wrapped_seek, wrapped_close});
6668 return res;
6669}
6670
6671#define INIT_FOPENCOOKIE COMMON_INTERCEPT_FUNCTION(fopencookie);
6672#else
6673#define INIT_FOPENCOOKIE
6674#endif // SANITIZER_INTERCEPT_FOPENCOOKIE
6675
6676#if SANITIZER_INTERCEPT_SEM
6677INTERCEPTOR(int, sem_init, __sanitizer_sem_t *s, int pshared, unsigned value) {
6678 void *ctx;
6679 COMMON_INTERCEPTOR_ENTER(ctx, sem_init, s, pshared, value);
6680 // Workaround a bug in glibc's "old" semaphore implementation by
6681 // zero-initializing the sem_t contents. This has to be done here because
6682 // interceptors bind to the lowest version before glibc 2.36, hitting the
6683 // buggy code path while the non-sanitized build of the same code works fine.
6684 REAL(memset)(s, 0, sizeof(*s));
6685 int res = REAL(sem_init)(s, pshared, value);
6686 return res;
6687}
6688
6689INTERCEPTOR(int, sem_destroy, __sanitizer_sem_t *s) {
6690 void *ctx;
6691 COMMON_INTERCEPTOR_ENTER(ctx, sem_destroy, s);
6692 int res = REAL(sem_destroy)(s);
6693 return res;
6694}
6695
6696INTERCEPTOR(int, sem_wait, __sanitizer_sem_t *s) {
6697 void *ctx;
6698 COMMON_INTERCEPTOR_ENTER(ctx, sem_wait, s);
6699 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_wait)(s);
6700 if (res == 0) {
6701 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s);
6702 }
6703 return res;
6704}
6705
6706INTERCEPTOR(int, sem_trywait, __sanitizer_sem_t *s) {
6707 void *ctx;
6708 COMMON_INTERCEPTOR_ENTER(ctx, sem_trywait, s);
6709 int res = REAL(sem_trywait)(s);
6710 if (res == 0) {
6711 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s);
6712 }
6713 return res;
6714}
6715
6716INTERCEPTOR(int, sem_timedwait, __sanitizer_sem_t *s, void *abstime) {
6717 void *ctx;
6718 COMMON_INTERCEPTOR_ENTER(ctx, sem_timedwait, s, abstime);
6719 COMMON_INTERCEPTOR_READ_RANGE(ctx, abstime, struct_timespec_sz);
6720 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_timedwait)(s, abstime);
6721 if (res == 0) {
6722 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s);
6723 }
6724 return res;
6725}
6726
6727INTERCEPTOR(int, sem_post, __sanitizer_sem_t *s) {
6728 void *ctx;
6729 COMMON_INTERCEPTOR_ENTER(ctx, sem_post, s);
6730 COMMON_INTERCEPTOR_RELEASE(ctx, (uptr)s);
6731 int res = REAL(sem_post)(s);
6732 return res;
6733}
6734
6735INTERCEPTOR(int, sem_getvalue, __sanitizer_sem_t *s, int *sval) {
6736 void *ctx;
6737 COMMON_INTERCEPTOR_ENTER(ctx, sem_getvalue, s, sval);
6738 int res = REAL(sem_getvalue)(s, sval);
6739 if (res == 0) {
6740 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s);
6741 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sval, sizeof(*sval));
6742 }
6743 return res;
6744}
6745
6746INTERCEPTOR(__sanitizer_sem_t *, sem_open, const char *name, int oflag, ...) {
6747 void *ctx;
6748 va_list ap;
6749 va_start(ap, oflag);
6750 u32 mode = va_arg(ap, u32);
6751 u32 value = va_arg(ap, u32);
6752 COMMON_INTERCEPTOR_ENTER(ctx, sem_open, name, oflag, mode, value);
6753 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
6754 __sanitizer_sem_t *s = REAL(sem_open)(name, oflag, mode, value);
6755 if (s)
6756 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, sizeof(*s));
6757 va_end(ap);
6758 return s;
6759}
6760
6761INTERCEPTOR(int, sem_unlink, const char *name) {
6762 void *ctx;
6763 COMMON_INTERCEPTOR_ENTER(ctx, sem_unlink, name);
6764 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
6765 return REAL(sem_unlink)(name);
6766}
6767
6768# define INIT_SEM \
6769 COMMON_INTERCEPT_FUNCTION(sem_init); \
6770 COMMON_INTERCEPT_FUNCTION(sem_destroy); \
6771 COMMON_INTERCEPT_FUNCTION(sem_wait); \
6772 COMMON_INTERCEPT_FUNCTION(sem_trywait); \
6773 COMMON_INTERCEPT_FUNCTION(sem_timedwait); \
6774 COMMON_INTERCEPT_FUNCTION(sem_post); \
6775 COMMON_INTERCEPT_FUNCTION(sem_getvalue); \
6776 COMMON_INTERCEPT_FUNCTION(sem_open); \
6777 COMMON_INTERCEPT_FUNCTION(sem_unlink);
6778#else
6779# define INIT_SEM
6780#endif // SANITIZER_INTERCEPT_SEM
6781
6782#if SANITIZER_INTERCEPT_PTHREAD_SETCANCEL
6783INTERCEPTOR(int, pthread_setcancelstate, int state, int *oldstate) {
6784 void *ctx;
6785 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcancelstate, state, oldstate);
6786 int res = REAL(pthread_setcancelstate)(state, oldstate);
6787 if (res == 0 && oldstate != nullptr)
6788 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldstate, sizeof(*oldstate));
6789 return res;
6790}
6791
6792INTERCEPTOR(int, pthread_setcanceltype, int type, int *oldtype) {
6793 void *ctx;
6794 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcanceltype, type, oldtype);
6795 int res = REAL(pthread_setcanceltype)(type, oldtype);
6796 if (res == 0 && oldtype != nullptr)
6797 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldtype, sizeof(*oldtype));
6798 return res;
6799}
6800#define INIT_PTHREAD_SETCANCEL \
6801 COMMON_INTERCEPT_FUNCTION(pthread_setcancelstate); \
6802 COMMON_INTERCEPT_FUNCTION(pthread_setcanceltype);
6803#else
6804#define INIT_PTHREAD_SETCANCEL
6805#endif
6806
6807#if SANITIZER_INTERCEPT_MINCORE
6808INTERCEPTOR(int, mincore, void *addr, uptr length, unsigned char *vec) {
6809 void *ctx;
6810 COMMON_INTERCEPTOR_ENTER(ctx, mincore, addr, length, vec);
6811 int res = REAL(mincore)(addr, length, vec);
6812 if (res == 0) {
6813 uptr page_size = GetPageSizeCached();
6814 uptr vec_size = ((length + page_size - 1) & (~(page_size - 1))) / page_size;
6815 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, vec, vec_size);
6816 }
6817 return res;
6818}
6819#define INIT_MINCORE COMMON_INTERCEPT_FUNCTION(mincore);
6820#else
6821#define INIT_MINCORE
6822#endif
6823
6824#if SANITIZER_INTERCEPT_PROCESS_VM_READV
6825INTERCEPTOR(SSIZE_T, process_vm_readv, int pid, __sanitizer_iovec *local_iov,
6826 uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt,
6827 uptr flags) {
6828 void *ctx;
6829 COMMON_INTERCEPTOR_ENTER(ctx, process_vm_readv, pid, local_iov, liovcnt,
6830 remote_iov, riovcnt, flags);
6831 SSIZE_T res = REAL(process_vm_readv)(pid, local_iov, liovcnt, remote_iov,
6832 riovcnt, flags);
6833 if (res > 0)
6834 write_iovec(ctx, local_iov, liovcnt, res);
6835 return res;
6836}
6837
6838INTERCEPTOR(SSIZE_T, process_vm_writev, int pid, __sanitizer_iovec *local_iov,
6839 uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt,
6840 uptr flags) {
6841 void *ctx;
6842 COMMON_INTERCEPTOR_ENTER(ctx, process_vm_writev, pid, local_iov, liovcnt,
6843 remote_iov, riovcnt, flags);
6844 SSIZE_T res = REAL(process_vm_writev)(pid, local_iov, liovcnt, remote_iov,
6845 riovcnt, flags);
6846 if (res > 0)
6847 read_iovec(ctx, local_iov, liovcnt, res);
6848 return res;
6849}
6850#define INIT_PROCESS_VM_READV \
6851 COMMON_INTERCEPT_FUNCTION(process_vm_readv); \
6852 COMMON_INTERCEPT_FUNCTION(process_vm_writev);
6853#else
6854#define INIT_PROCESS_VM_READV
6855#endif
6856
6857#if SANITIZER_INTERCEPT_CTERMID
6858INTERCEPTOR(char *, ctermid, char *s) {
6859 void *ctx;
6860 COMMON_INTERCEPTOR_ENTER(ctx, ctermid, s);
6861 char *res = REAL(ctermid)(s);
6862 if (res) {
6863 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
6864 }
6865 return res;
6866}
6867#define INIT_CTERMID COMMON_INTERCEPT_FUNCTION(ctermid);
6868#else
6869#define INIT_CTERMID
6870#endif
6871
6872#if SANITIZER_INTERCEPT_CTERMID_R
6873INTERCEPTOR(char *, ctermid_r, char *s) {
6874 void *ctx;
6875 COMMON_INTERCEPTOR_ENTER(ctx, ctermid_r, s);
6876 char *res = REAL(ctermid_r)(s);
6877 if (res) {
6878 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
6879 }
6880 return res;
6881}
6882#define INIT_CTERMID_R COMMON_INTERCEPT_FUNCTION(ctermid_r);
6883#else
6884#define INIT_CTERMID_R
6885#endif
6886
6887#if SANITIZER_INTERCEPT_RECV_RECVFROM
6888INTERCEPTOR(SSIZE_T, recv, int fd, void *buf, SIZE_T len, int flags) {
6889 void *ctx;
6890 COMMON_INTERCEPTOR_ENTER(ctx, recv, fd, buf, len, flags);
6891 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6892 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recv)(fd, buf, len, flags);
6893 if (res > 0) {
6894 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len));
6895 }
6896 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
6897 return res;
6898}
6899
6900INTERCEPTOR(SSIZE_T, recvfrom, int fd, void *buf, SIZE_T len, int flags,
6901 void *srcaddr, int *addrlen) {
6902 void *ctx;
6903 COMMON_INTERCEPTOR_ENTER(ctx, recvfrom, fd, buf, len, flags, srcaddr,
6904 addrlen);
6905 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6906 SIZE_T srcaddr_sz;
6907 if (srcaddr) srcaddr_sz = *addrlen;
6908 (void)srcaddr_sz; // prevent "set but not used" warning
6909 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recvfrom)(fd, buf, len, flags,
6910 srcaddr, addrlen);
6911 if (res > 0)
6912 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len));
6913 if (res >= 0 && srcaddr)
6914 COMMON_INTERCEPTOR_INITIALIZE_RANGE(srcaddr,
6915 Min((SIZE_T)*addrlen, srcaddr_sz));
6916 return res;
6917}
6918#define INIT_RECV_RECVFROM \
6919 COMMON_INTERCEPT_FUNCTION(recv); \
6920 COMMON_INTERCEPT_FUNCTION(recvfrom);
6921#else
6922#define INIT_RECV_RECVFROM
6923#endif
6924
6925#if SANITIZER_INTERCEPT_SEND_SENDTO
6926INTERCEPTOR(SSIZE_T, send, int fd, void *buf, SIZE_T len, int flags) {
6927 void *ctx;
6928 COMMON_INTERCEPTOR_ENTER(ctx, send, fd, buf, len, flags);
6929 if (fd >= 0) {
6930 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6931 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
6932 }
6933 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(send)(fd, buf, len, flags);
6934 if (common_flags()->intercept_send && res > 0)
6935 COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len));
6936 return res;
6937}
6938
6939INTERCEPTOR(SSIZE_T, sendto, int fd, void *buf, SIZE_T len, int flags,
6940 void *dstaddr, int addrlen) {
6941 void *ctx;
6942 COMMON_INTERCEPTOR_ENTER(ctx, sendto, fd, buf, len, flags, dstaddr, addrlen);
6943 if (fd >= 0) {
6944 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6945 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
6946 }
6947 // Can't check dstaddr as it may have uninitialized padding at the end.
6948 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(sendto)(fd, buf, len, flags,
6949 dstaddr, addrlen);
6950 if (common_flags()->intercept_send && res > 0)
6951 COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len));
6952 return res;
6953}
6954#define INIT_SEND_SENDTO \
6955 COMMON_INTERCEPT_FUNCTION(send); \
6956 COMMON_INTERCEPT_FUNCTION(sendto);
6957#else
6958#define INIT_SEND_SENDTO
6959#endif
6960
6961#if SANITIZER_INTERCEPT_EVENTFD_READ_WRITE
6962INTERCEPTOR(int, eventfd_read, int fd, __sanitizer_eventfd_t *value) {
6963 void *ctx;
6964 COMMON_INTERCEPTOR_ENTER(ctx, eventfd_read, fd, value);
6965 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6966 int res = COMMON_INTERCEPTOR_BLOCK_REAL(eventfd_read)(fd, value);
6967 if (res == 0) {
6968 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, sizeof(*value));
6969 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
6970 }
6971 return res;
6972}
6973INTERCEPTOR(int, eventfd_write, int fd, __sanitizer_eventfd_t value) {
6974 void *ctx;
6975 COMMON_INTERCEPTOR_ENTER(ctx, eventfd_write, fd, value);
6976 if (fd >= 0) {
6977 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6978 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
6979 }
6980 int res = COMMON_INTERCEPTOR_BLOCK_REAL(eventfd_write)(fd, value);
6981 return res;
6982}
6983#define INIT_EVENTFD_READ_WRITE \
6984 COMMON_INTERCEPT_FUNCTION(eventfd_read); \
6985 COMMON_INTERCEPT_FUNCTION(eventfd_write)
6986#else
6987#define INIT_EVENTFD_READ_WRITE
6988#endif
6989
6990#if SANITIZER_INTERCEPT_STAT
6991INTERCEPTOR(int, stat, const char *path, void *buf) {
6992 void *ctx;
6993 COMMON_INTERCEPTOR_ENTER(ctx, stat, path, buf);
6994 if (common_flags()->intercept_stat)
6995 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6996 int res = REAL(stat)(path, buf);
6997 if (!res)
6998 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz);
6999 return res;
7000}
7001#define INIT_STAT COMMON_INTERCEPT_FUNCTION(stat)
7002#else
7003#define INIT_STAT
7004#endif
7005
7006#if SANITIZER_INTERCEPT_STAT64
7007INTERCEPTOR(int, stat64, const char *path, void *buf) {
7008 void *ctx;
7009 COMMON_INTERCEPTOR_ENTER(ctx, stat64, path, buf);
7010 if (common_flags()->intercept_stat)
7011 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
7012 int res = REAL(stat64)(path, buf);
7013 if (!res)
7014 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz);
7015 return res;
7016}
7017#define INIT_STAT64 COMMON_INTERCEPT_FUNCTION(stat64)
7018#else
7019#define INIT_STAT64
7020#endif
7021
7022
7023#if SANITIZER_INTERCEPT_LSTAT
7024INTERCEPTOR(int, lstat, const char *path, void *buf) {
7025 void *ctx;
7026 COMMON_INTERCEPTOR_ENTER(ctx, lstat, path, buf);
7027 if (common_flags()->intercept_stat)
7028 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
7029 int res = REAL(lstat)(path, buf);
7030 if (!res)
7031 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz);
7032 return res;
7033}
7034#define INIT_LSTAT COMMON_INTERCEPT_FUNCTION(lstat)
7035#else
7036#define INIT_LSTAT
7037#endif
7038
7039#if SANITIZER_INTERCEPT_STAT64
7040INTERCEPTOR(int, lstat64, const char *path, void *buf) {
7041 void *ctx;
7042 COMMON_INTERCEPTOR_ENTER(ctx, lstat64, path, buf);
7043 if (common_flags()->intercept_stat)
7044 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
7045 int res = REAL(lstat64)(path, buf);
7046 if (!res)
7047 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz);
7048 return res;
7049}
7050#define INIT_LSTAT64 COMMON_INTERCEPT_FUNCTION(lstat64)
7051#else
7052#define INIT_LSTAT64
7053#endif
7054
7055#if SANITIZER_INTERCEPT___XSTAT
7056INTERCEPTOR(int, __xstat, int version, const char *path, void *buf) {
7057 void *ctx;
7058 COMMON_INTERCEPTOR_ENTER(ctx, __xstat, version, path, buf);
7059 if (common_flags()->intercept_stat)
7060 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
7061 int res = REAL(__xstat)(version, path, buf);
7062 if (!res)
7063 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz);
7064 return res;
7065}
7066#define INIT___XSTAT COMMON_INTERCEPT_FUNCTION(__xstat)
7067#else
7068#define INIT___XSTAT
7069#endif
7070
7071#if SANITIZER_INTERCEPT___XSTAT64
7072INTERCEPTOR(int, __xstat64, int version, const char *path, void *buf) {
7073 void *ctx;
7074 COMMON_INTERCEPTOR_ENTER(ctx, __xstat64, version, path, buf);
7075 if (common_flags()->intercept_stat)
7076 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
7077 int res = REAL(__xstat64)(version, path, buf);
7078 if (!res)
7079 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz);
7080 return res;
7081}
7082#define INIT___XSTAT64 COMMON_INTERCEPT_FUNCTION(__xstat64)
7083#else
7084#define INIT___XSTAT64
7085#endif
7086
7087#if SANITIZER_INTERCEPT___LXSTAT
7088INTERCEPTOR(int, __lxstat, int version, const char *path, void *buf) {
7089 void *ctx;
7090 COMMON_INTERCEPTOR_ENTER(ctx, __lxstat, version, path, buf);
7091 if (common_flags()->intercept_stat)
7092 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
7093 int res = REAL(__lxstat)(version, path, buf);
7094 if (!res)
7095 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz);
7096 return res;
7097}
7098#define INIT___LXSTAT COMMON_INTERCEPT_FUNCTION(__lxstat)
7099#else
7100#define INIT___LXSTAT
7101#endif
7102
7103#if SANITIZER_INTERCEPT___LXSTAT64
7104INTERCEPTOR(int, __lxstat64, int version, const char *path, void *buf) {
7105 void *ctx;
7106 COMMON_INTERCEPTOR_ENTER(ctx, __lxstat64, version, path, buf);
7107 if (common_flags()->intercept_stat)
7108 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
7109 int res = REAL(__lxstat64)(version, path, buf);
7110 if (!res)
7111 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz);
7112 return res;
7113}
7114#define INIT___LXSTAT64 COMMON_INTERCEPT_FUNCTION(__lxstat64)
7115#else
7116#define INIT___LXSTAT64
7117#endif
7118
7119// FIXME: add other *stat interceptor
7120
7121#if SANITIZER_INTERCEPT_UTMP
7122INTERCEPTOR(void *, getutent, int dummy) {
7123 void *ctx;
7124 COMMON_INTERCEPTOR_ENTER(ctx, getutent, dummy);
7125 void *res = REAL(getutent)(dummy);
7126 if (res)
7127 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz);
7128 return res;
7129}
7130INTERCEPTOR(void *, getutid, void *ut) {
7131 void *ctx;
7132 COMMON_INTERCEPTOR_ENTER(ctx, getutid, ut);
7133 void *res = REAL(getutid)(ut);
7134 if (res)
7135 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz);
7136 return res;
7137}
7138INTERCEPTOR(void *, getutline, void *ut) {
7139 void *ctx;
7140 COMMON_INTERCEPTOR_ENTER(ctx, getutline, ut);
7141 void *res = REAL(getutline)(ut);
7142 if (res)
7143 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz);
7144 return res;
7145}
7146#define INIT_UTMP \
7147 COMMON_INTERCEPT_FUNCTION(getutent); \
7148 COMMON_INTERCEPT_FUNCTION(getutid); \
7149 COMMON_INTERCEPT_FUNCTION(getutline);
7150#else
7151#define INIT_UTMP
7152#endif
7153
7154#if SANITIZER_INTERCEPT_UTMPX
7155INTERCEPTOR(void *, getutxent, int dummy) {
7156 void *ctx;
7157 COMMON_INTERCEPTOR_ENTER(ctx, getutxent, dummy);
7158 void *res = REAL(getutxent)(dummy);
7159 if (res)
7160 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz);
7161 return res;
7162}
7163INTERCEPTOR(void *, getutxid, void *ut) {
7164 void *ctx;
7165 COMMON_INTERCEPTOR_ENTER(ctx, getutxid, ut);
7166 void *res = REAL(getutxid)(ut);
7167 if (res)
7168 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz);
7169 return res;
7170}
7171INTERCEPTOR(void *, getutxline, void *ut) {
7172 void *ctx;
7173 COMMON_INTERCEPTOR_ENTER(ctx, getutxline, ut);
7174 void *res = REAL(getutxline)(ut);
7175 if (res)
7176 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz);
7177 return res;
7178}
7179INTERCEPTOR(void *, pututxline, const void *ut) {
7180 void *ctx;
7181 COMMON_INTERCEPTOR_ENTER(ctx, pututxline, ut);
7182 if (ut)
7183 COMMON_INTERCEPTOR_READ_RANGE(ctx, ut, __sanitizer::struct_utmpx_sz);
7184 void *res = REAL(pututxline)(ut);
7185 if (res)
7186 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_utmpx_sz);
7187 return res;
7188}
7189#define INIT_UTMPX \
7190 COMMON_INTERCEPT_FUNCTION(getutxent); \
7191 COMMON_INTERCEPT_FUNCTION(getutxid); \
7192 COMMON_INTERCEPT_FUNCTION(getutxline); \
7193 COMMON_INTERCEPT_FUNCTION(pututxline);
7194#else
7195#define INIT_UTMPX
7196#endif
7197
7198#if SANITIZER_INTERCEPT_GETLOADAVG
7199INTERCEPTOR(int, getloadavg, double *loadavg, int nelem) {
7200 void *ctx;
7201 COMMON_INTERCEPTOR_ENTER(ctx, getloadavg, loadavg, nelem);
7202 int res = REAL(getloadavg)(loadavg, nelem);
7203 if (res > 0)
7204 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, loadavg, res * sizeof(*loadavg));
7205 return res;
7206}
7207#define INIT_GETLOADAVG \
7208 COMMON_INTERCEPT_FUNCTION(getloadavg);
7209#else
7210#define INIT_GETLOADAVG
7211#endif
7212
7213#if SANITIZER_INTERCEPT_MCHECK_MPROBE
7214INTERCEPTOR(int, mcheck, void (*abortfunc)(int mstatus)) {
7215 return 0;
7216}
7217
7218INTERCEPTOR(int, mcheck_pedantic, void (*abortfunc)(int mstatus)) {
7219 return 0;
7220}
7221
7222INTERCEPTOR(int, mprobe, void *ptr) {
7223 return 0;
7224}
7225#endif
7226
7227#if SANITIZER_INTERCEPT_WCSLEN
7228INTERCEPTOR(SIZE_T, wcslen, const wchar_t *s) {
7229 void *ctx;
7230 COMMON_INTERCEPTOR_ENTER(ctx, wcslen, s);
7231 SIZE_T res = REAL(wcslen)(s);
7232 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (res + 1));
7233 return res;
7234}
7235
7236INTERCEPTOR(SIZE_T, wcsnlen, const wchar_t *s, SIZE_T n) {
7237 void *ctx;
7238 COMMON_INTERCEPTOR_ENTER(ctx, wcsnlen, s, n);
7239 SIZE_T res = REAL(wcsnlen)(s, n);
7240 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * Min(res + 1, n));
7241 return res;
7242}
7243#define INIT_WCSLEN \
7244 COMMON_INTERCEPT_FUNCTION(wcslen); \
7245 COMMON_INTERCEPT_FUNCTION(wcsnlen);
7246#else
7247#define INIT_WCSLEN
7248#endif
7249
7250#if SANITIZER_INTERCEPT_WCSCAT
7251INTERCEPTOR(wchar_t *, wcscat, wchar_t *dst, const wchar_t *src) {
7252 void *ctx;
7253 COMMON_INTERCEPTOR_ENTER(ctx, wcscat, dst, src);
7254 SIZE_T src_size = internal_wcslen(src);
7255 SIZE_T dst_size = internal_wcslen(dst);
7256 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, (src_size + 1) * sizeof(wchar_t));
7257 COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t));
7258 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size,
7259 (src_size + 1) * sizeof(wchar_t));
7260 return REAL(wcscat)(dst, src);
7261}
7262
7263INTERCEPTOR(wchar_t *, wcsncat, wchar_t *dst, const wchar_t *src, SIZE_T n) {
7264 void *ctx;
7265 COMMON_INTERCEPTOR_ENTER(ctx, wcsncat, dst, src, n);
7266 SIZE_T src_size = internal_wcsnlen(src, n);
7267 SIZE_T dst_size = internal_wcslen(dst);
7268 COMMON_INTERCEPTOR_READ_RANGE(ctx, src,
7269 Min(src_size + 1, n) * sizeof(wchar_t));
7270 COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t));
7271 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size,
7272 (src_size + 1) * sizeof(wchar_t));
7273 return REAL(wcsncat)(dst, src, n);
7274}
7275#define INIT_WCSCAT \
7276 COMMON_INTERCEPT_FUNCTION(wcscat); \
7277 COMMON_INTERCEPT_FUNCTION(wcsncat);
7278#else
7279#define INIT_WCSCAT
7280#endif
7281
7282#if SANITIZER_INTERCEPT_WCSDUP
7283INTERCEPTOR(wchar_t *, wcsdup, wchar_t *s) {
7284 void *ctx;
7285 COMMON_INTERCEPTOR_ENTER(ctx, wcsdup, s);
7286 SIZE_T len = internal_wcslen(s);
7287 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (len + 1));
7288 wchar_t *result = REAL(wcsdup)(s);
7289 if (result)
7290 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(wchar_t) * (len + 1));
7291 return result;
7292}
7293
7294#define INIT_WCSDUP COMMON_INTERCEPT_FUNCTION(wcsdup);
7295#else
7296#define INIT_WCSDUP
7297#endif
7298
7299#if SANITIZER_INTERCEPT_STRXFRM
7300static SIZE_T RealStrLen(const char *str) { return internal_strlen(str); }
7301
7302static SIZE_T RealStrLen(const wchar_t *str) { return internal_wcslen(str); }
7303
7304#define STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len, ...) \
7305 { \
7306 void *ctx; \
7307 COMMON_INTERCEPTOR_ENTER(ctx, strxfrm, dest, src, len, ##__VA_ARGS__); \
7308 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, \
7309 sizeof(*src) * (RealStrLen(src) + 1)); \
7310 SIZE_T res = REAL(strxfrm)(dest, src, len, ##__VA_ARGS__); \
7311 if (res < len) \
7312 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, sizeof(*src) * (res + 1)); \
7313 return res; \
7314 }
7315
7316INTERCEPTOR(SIZE_T, strxfrm, char *dest, const char *src, SIZE_T len) {
7317 STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len);
7318}
7319
7320INTERCEPTOR(SIZE_T, strxfrm_l, char *dest, const char *src, SIZE_T len,
7321 void *locale) {
7322 STRXFRM_INTERCEPTOR_IMPL(strxfrm_l, dest, src, len, locale);
7323}
7324
7325#define INIT_STRXFRM \
7326 COMMON_INTERCEPT_FUNCTION(strxfrm); \
7327 COMMON_INTERCEPT_FUNCTION(strxfrm_l);
7328#else
7329#define INIT_STRXFRM
7330#endif
7331
7332#if SANITIZER_INTERCEPT___STRXFRM_L
7333INTERCEPTOR(SIZE_T, __strxfrm_l, char *dest, const char *src, SIZE_T len,
7334 void *locale) {
7335 STRXFRM_INTERCEPTOR_IMPL(__strxfrm_l, dest, src, len, locale);
7336}
7337
7338#define INIT___STRXFRM_L COMMON_INTERCEPT_FUNCTION(__strxfrm_l);
7339#else
7340#define INIT___STRXFRM_L
7341#endif
7342
7343#if SANITIZER_INTERCEPT_WCSXFRM
7344INTERCEPTOR(SIZE_T, wcsxfrm, wchar_t *dest, const wchar_t *src, SIZE_T len) {
7345 STRXFRM_INTERCEPTOR_IMPL(wcsxfrm, dest, src, len);
7346}
7347
7348INTERCEPTOR(SIZE_T, wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len,
7349 void *locale) {
7350 STRXFRM_INTERCEPTOR_IMPL(wcsxfrm_l, dest, src, len, locale);
7351}
7352
7353#define INIT_WCSXFRM \
7354 COMMON_INTERCEPT_FUNCTION(wcsxfrm); \
7355 COMMON_INTERCEPT_FUNCTION(wcsxfrm_l);
7356#else
7357#define INIT_WCSXFRM
7358#endif
7359
7360#if SANITIZER_INTERCEPT___WCSXFRM_L
7361INTERCEPTOR(SIZE_T, __wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len,
7362 void *locale) {
7363 STRXFRM_INTERCEPTOR_IMPL(__wcsxfrm_l, dest, src, len, locale);
7364}
7365
7366#define INIT___WCSXFRM_L COMMON_INTERCEPT_FUNCTION(__wcsxfrm_l);
7367#else
7368#define INIT___WCSXFRM_L
7369#endif
7370
7371#if SANITIZER_INTERCEPT_ACCT
7372INTERCEPTOR(int, acct, const char *file) {
7373 void *ctx;
7374 COMMON_INTERCEPTOR_ENTER(ctx, acct, file);
7375 if (file)
7376 COMMON_INTERCEPTOR_READ_RANGE(ctx, file, internal_strlen(file) + 1);
7377 return REAL(acct)(file);
7378}
7379#define INIT_ACCT COMMON_INTERCEPT_FUNCTION(acct)
7380#else
7381#define INIT_ACCT
7382#endif
7383
7384#if SANITIZER_INTERCEPT_USER_FROM_UID
7385INTERCEPTOR(const char *, user_from_uid, u32 uid, int nouser) {
7386 void *ctx;
7387 const char *user;
7388 COMMON_INTERCEPTOR_ENTER(ctx, user_from_uid, uid, nouser);
7389 user = REAL(user_from_uid)(uid, nouser);
7390 if (user)
7391 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, user, internal_strlen(user) + 1);
7392 return user;
7393}
7394#define INIT_USER_FROM_UID COMMON_INTERCEPT_FUNCTION(user_from_uid)
7395#else
7396#define INIT_USER_FROM_UID
7397#endif
7398
7399#if SANITIZER_INTERCEPT_UID_FROM_USER
7400INTERCEPTOR(int, uid_from_user, const char *name, u32 *uid) {
7401 void *ctx;
7402 int res;
7403 COMMON_INTERCEPTOR_ENTER(ctx, uid_from_user, name, uid);
7404 if (name)
7405 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7406 res = REAL(uid_from_user)(name, uid);
7407 if (uid)
7408 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, uid, sizeof(*uid));
7409 return res;
7410}
7411#define INIT_UID_FROM_USER COMMON_INTERCEPT_FUNCTION(uid_from_user)
7412#else
7413#define INIT_UID_FROM_USER
7414#endif
7415
7416#if SANITIZER_INTERCEPT_GROUP_FROM_GID
7417INTERCEPTOR(const char *, group_from_gid, u32 gid, int nogroup) {
7418 void *ctx;
7419 const char *group;
7420 COMMON_INTERCEPTOR_ENTER(ctx, group_from_gid, gid, nogroup);
7421 group = REAL(group_from_gid)(gid, nogroup);
7422 if (group)
7423 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, group, internal_strlen(group) + 1);
7424 return group;
7425}
7426#define INIT_GROUP_FROM_GID COMMON_INTERCEPT_FUNCTION(group_from_gid)
7427#else
7428#define INIT_GROUP_FROM_GID
7429#endif
7430
7431#if SANITIZER_INTERCEPT_GID_FROM_GROUP
7432INTERCEPTOR(int, gid_from_group, const char *group, u32 *gid) {
7433 void *ctx;
7434 int res;
7435 COMMON_INTERCEPTOR_ENTER(ctx, gid_from_group, group, gid);
7436 if (group)
7437 COMMON_INTERCEPTOR_READ_RANGE(ctx, group, internal_strlen(group) + 1);
7438 res = REAL(gid_from_group)(group, gid);
7439 if (gid)
7440 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, gid, sizeof(*gid));
7441 return res;
7442}
7443#define INIT_GID_FROM_GROUP COMMON_INTERCEPT_FUNCTION(gid_from_group)
7444#else
7445#define INIT_GID_FROM_GROUP
7446#endif
7447
7448#if SANITIZER_INTERCEPT_ACCESS
7449INTERCEPTOR(int, access, const char *path, int mode) {
7450 void *ctx;
7451 COMMON_INTERCEPTOR_ENTER(ctx, access, path, mode);
7452 if (path)
7453 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7454 return REAL(access)(path, mode);
7455}
7456#define INIT_ACCESS COMMON_INTERCEPT_FUNCTION(access)
7457#else
7458#define INIT_ACCESS
7459#endif
7460
7461#if SANITIZER_INTERCEPT_FACCESSAT
7462INTERCEPTOR(int, faccessat, int fd, const char *path, int mode, int flags) {
7463 void *ctx;
7464 COMMON_INTERCEPTOR_ENTER(ctx, faccessat, fd, path, mode, flags);
7465 if (path)
7466 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7467 return REAL(faccessat)(fd, path, mode, flags);
7468}
7469#define INIT_FACCESSAT COMMON_INTERCEPT_FUNCTION(faccessat)
7470#else
7471#define INIT_FACCESSAT
7472#endif
7473
7474#if SANITIZER_INTERCEPT_GETGROUPLIST
7475INTERCEPTOR(int, getgrouplist, const char *name, u32 basegid, u32 *groups,
7476 int *ngroups) {
7477 void *ctx;
7478 int res;
7479 COMMON_INTERCEPTOR_ENTER(ctx, getgrouplist, name, basegid, groups, ngroups);
7480 if (name)
7481 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7482 if (ngroups)
7483 COMMON_INTERCEPTOR_READ_RANGE(ctx, ngroups, sizeof(*ngroups));
7484 res = REAL(getgrouplist)(name, basegid, groups, ngroups);
7485 if (!res && groups && ngroups) {
7486 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups));
7487 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups));
7488 }
7489 return res;
7490}
7491
7492#define INIT_GETGROUPLIST COMMON_INTERCEPT_FUNCTION(getgrouplist);
7493#else
7494#define INIT_GETGROUPLIST
7495#endif
7496
7497#if SANITIZER_INTERCEPT_GETGROUPMEMBERSHIP
7498INTERCEPTOR(int, getgroupmembership, const char *name, u32 basegid, u32 *groups,
7499 int maxgrp, int *ngroups) {
7500 void *ctx;
7501 int res;
7502 COMMON_INTERCEPTOR_ENTER(ctx, getgroupmembership, name, basegid, groups,
7503 maxgrp, ngroups);
7504 if (name)
7505 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7506 res = REAL(getgroupmembership)(name, basegid, groups, maxgrp, ngroups);
7507 if (!res && groups && ngroups) {
7508 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups));
7509 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups));
7510 }
7511 return res;
7512}
7513
7514#define INIT_GETGROUPMEMBERSHIP COMMON_INTERCEPT_FUNCTION(getgroupmembership);
7515#else
7516#define INIT_GETGROUPMEMBERSHIP
7517#endif
7518
7519#if SANITIZER_INTERCEPT_READLINK
7520INTERCEPTOR(SSIZE_T, readlink, const char *path, char *buf, SIZE_T bufsiz) {
7521 void* ctx;
7522 COMMON_INTERCEPTOR_ENTER(ctx, readlink, path, buf, bufsiz);
7523 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7524 SSIZE_T res = REAL(readlink)(path, buf, bufsiz);
7525 if (res > 0)
7526 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res);
7527 return res;
7528}
7529
7530#define INIT_READLINK COMMON_INTERCEPT_FUNCTION(readlink)
7531#else
7532#define INIT_READLINK
7533#endif
7534
7535#if SANITIZER_INTERCEPT_READLINKAT
7536INTERCEPTOR(SSIZE_T, readlinkat, int dirfd, const char *path, char *buf,
7537 SIZE_T bufsiz) {
7538 void* ctx;
7539 COMMON_INTERCEPTOR_ENTER(ctx, readlinkat, dirfd, path, buf, bufsiz);
7540 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7541 SSIZE_T res = REAL(readlinkat)(dirfd, path, buf, bufsiz);
7542 if (res > 0)
7543 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res);
7544 return res;
7545}
7546
7547#define INIT_READLINKAT COMMON_INTERCEPT_FUNCTION(readlinkat)
7548#else
7549#define INIT_READLINKAT
7550#endif
7551
7552#if SANITIZER_INTERCEPT_NAME_TO_HANDLE_AT
7553INTERCEPTOR(int, name_to_handle_at, int dirfd, const char *pathname,
7554 struct file_handle *handle, int *mount_id, int flags) {
7555 void* ctx;
7556 COMMON_INTERCEPTOR_ENTER(ctx, name_to_handle_at, dirfd, pathname, handle,
7557 mount_id, flags);
7558 COMMON_INTERCEPTOR_READ_RANGE(ctx, pathname, internal_strlen(pathname) + 1);
7559
7560 __sanitizer_file_handle *sanitizer_handle =
7561 reinterpret_cast<__sanitizer_file_handle*>(handle);
7562 COMMON_INTERCEPTOR_READ_RANGE(
7563 ctx, &sanitizer_handle->handle_bytes,
7564 sizeof(sanitizer_handle->handle_bytes));
7565
7566 int res = REAL(name_to_handle_at)(dirfd, pathname, handle, mount_id, flags);
7567 if (!res) {
7568 COMMON_INTERCEPTOR_WRITE_RANGE(
7569 ctx, &sanitizer_handle->handle_bytes,
7570 sizeof(sanitizer_handle->handle_bytes));
7571 COMMON_INTERCEPTOR_WRITE_RANGE(
7572 ctx, &sanitizer_handle->handle_type,
7573 sizeof(sanitizer_handle->handle_type));
7574 COMMON_INTERCEPTOR_WRITE_RANGE(
7575 ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes);
7576 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mount_id, sizeof(*mount_id));
7577 }
7578 return res;
7579}
7580
7581#define INIT_NAME_TO_HANDLE_AT COMMON_INTERCEPT_FUNCTION(name_to_handle_at)
7582#else
7583#define INIT_NAME_TO_HANDLE_AT
7584#endif
7585
7586#if SANITIZER_INTERCEPT_OPEN_BY_HANDLE_AT
7587INTERCEPTOR(int, open_by_handle_at, int mount_fd, struct file_handle* handle,
7588 int flags) {
7589 void* ctx;
7590 COMMON_INTERCEPTOR_ENTER(ctx, open_by_handle_at, mount_fd, handle, flags);
7591
7592 __sanitizer_file_handle *sanitizer_handle =
7593 reinterpret_cast<__sanitizer_file_handle*>(handle);
7594 COMMON_INTERCEPTOR_READ_RANGE(
7595 ctx, &sanitizer_handle->handle_bytes,
7596 sizeof(sanitizer_handle->handle_bytes));
7597 COMMON_INTERCEPTOR_READ_RANGE(
7598 ctx, &sanitizer_handle->handle_type,
7599 sizeof(sanitizer_handle->handle_type));
7600 COMMON_INTERCEPTOR_READ_RANGE(
7601 ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes);
7602
7603 return COMMON_INTERCEPTOR_BLOCK_REAL(open_by_handle_at)(mount_fd, handle,
7604 flags);
7605}
7606
7607#define INIT_OPEN_BY_HANDLE_AT COMMON_INTERCEPT_FUNCTION(open_by_handle_at)
7608#else
7609#define INIT_OPEN_BY_HANDLE_AT
7610#endif
7611
7612#if SANITIZER_INTERCEPT_STRLCPY
7613INTERCEPTOR(SIZE_T, strlcpy, char *dst, char *src, SIZE_T size) {
7614 void *ctx;
7615 SIZE_T res;
7616 COMMON_INTERCEPTOR_ENTER(ctx, strlcpy, dst, src, size);
7617 if (src) {
7618 // Keep strnlen as macro argument, as macro may ignore it.
7619 COMMON_INTERCEPTOR_READ_STRING(
7620 ctx, src, Min(internal_strnlen(src, size), size - 1) + 1);
7621 }
7622 res = REAL(strlcpy)(dst, src, size);
7623 COMMON_INTERCEPTOR_COPY_STRING(ctx, dst, src, internal_strlen(dst) + 1);
7624 return res;
7625}
7626
7627INTERCEPTOR(SIZE_T, strlcat, char *dst, char *src, SIZE_T size) {
7628 void *ctx;
7629 SIZE_T len = 0;
7630 COMMON_INTERCEPTOR_ENTER(ctx, strlcat, dst, src, size);
7631 // src is checked in the strlcpy() interceptor
7632 if (dst) {
7633 len = internal_strnlen(dst, size);
7634 COMMON_INTERCEPTOR_READ_STRING(ctx, dst, Min(len, size - 1) + 1);
7635 }
7636 // Reuse the rest of the code in the strlcpy() interceptor
7637 return WRAP(strlcpy)(dst + len, src, size - len) + len;
7638}
7639#define INIT_STRLCPY \
7640 COMMON_INTERCEPT_FUNCTION(strlcpy); \
7641 COMMON_INTERCEPT_FUNCTION(strlcat);
7642#else
7643#define INIT_STRLCPY
7644#endif
7645
7646#if SANITIZER_INTERCEPT_MMAP
7647INTERCEPTOR(void *, mmap, void *addr, SIZE_T sz, int prot, int flags, int fd,
7648 OFF_T off) {
7649 void *ctx;
7650 if (common_flags()->detect_write_exec)
7651 ReportMmapWriteExec(prot, flags);
7652 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
7653 return (void *)internal_mmap(addr, sz, prot, flags, fd, off);
7654 COMMON_INTERCEPTOR_ENTER(ctx, mmap, addr, sz, prot, flags, fd, off);
7655 COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, off);
7656}
7657
7658INTERCEPTOR(int, munmap, void *addr, SIZE_T sz) {
7659 void *ctx;
7660 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
7661 return (int)internal_munmap(addr, sz);
7662 COMMON_INTERCEPTOR_ENTER(ctx, munmap, addr, sz);
7663 COMMON_INTERCEPTOR_MUNMAP_IMPL(ctx, addr, sz);
7664}
7665
7666INTERCEPTOR(int, mprotect, void *addr, SIZE_T sz, int prot) {
7667 void *ctx;
7668 if (common_flags()->detect_write_exec)
7669 ReportMmapWriteExec(prot, 0);
7670 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
7671 return (int)internal_mprotect(addr, sz, prot);
7672 COMMON_INTERCEPTOR_ENTER(ctx, mprotect, addr, sz, prot);
7673 MprotectMallocZones(addr, prot);
7674 return REAL(mprotect)(addr, sz, prot);
7675}
7676#define INIT_MMAP \
7677 COMMON_INTERCEPT_FUNCTION(mmap); \
7678 COMMON_INTERCEPT_FUNCTION(munmap); \
7679 COMMON_INTERCEPT_FUNCTION(mprotect);
7680#else
7681#define INIT_MMAP
7682#endif
7683
7684#if SANITIZER_INTERCEPT_MMAP64
7685INTERCEPTOR(void *, mmap64, void *addr, SIZE_T sz, int prot, int flags, int fd,
7686 OFF64_T off) {
7687 void *ctx;
7688 if (common_flags()->detect_write_exec)
7689 ReportMmapWriteExec(prot, flags);
7690 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
7691 return (void *)internal_mmap(addr, sz, prot, flags, fd, off);
7692 COMMON_INTERCEPTOR_ENTER(ctx, mmap64, addr, sz, prot, flags, fd, off);
7693 COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap64, addr, sz, prot, flags, fd, off);
7694}
7695#define INIT_MMAP64 COMMON_INTERCEPT_FUNCTION(mmap64);
7696#else
7697#define INIT_MMAP64
7698#endif
7699
7700#if SANITIZER_INTERCEPT_DEVNAME
7701INTERCEPTOR(char *, devname, u64 dev, u32 type) {
7702 void *ctx;
7703 char *name;
7704 COMMON_INTERCEPTOR_ENTER(ctx, devname, dev, type);
7705 name = REAL(devname)(dev, type);
7706 if (name)
7707 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
7708 return name;
7709}
7710#define INIT_DEVNAME COMMON_INTERCEPT_FUNCTION(devname);
7711#else
7712#define INIT_DEVNAME
7713#endif
7714
7715#if SANITIZER_INTERCEPT_DEVNAME_R
7716#if SANITIZER_NETBSD
7717#define DEVNAME_R_RETTYPE int
7718#define DEVNAME_R_SUCCESS(x) (!(x))
7719#else
7720#define DEVNAME_R_RETTYPE char*
7721#define DEVNAME_R_SUCCESS(x) (x)
7722#endif
7723INTERCEPTOR(DEVNAME_R_RETTYPE, devname_r, u64 dev, u32 type, char *path,
7724 uptr len) {
7725 void *ctx;
7726 COMMON_INTERCEPTOR_ENTER(ctx, devname_r, dev, type, path, len);
7727 DEVNAME_R_RETTYPE res = REAL(devname_r)(dev, type, path, len);
7728 if (DEVNAME_R_SUCCESS(res))
7729 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, path, internal_strlen(path) + 1);
7730 return res;
7731}
7732#define INIT_DEVNAME_R COMMON_INTERCEPT_FUNCTION(devname_r);
7733#else
7734#define INIT_DEVNAME_R
7735#endif
7736
7737#if SANITIZER_INTERCEPT_FGETLN
7738INTERCEPTOR(char *, fgetln, __sanitizer_FILE *stream, SIZE_T *len) {
7739 void *ctx;
7740 COMMON_INTERCEPTOR_ENTER(ctx, fgetln, stream, len);
7741 char *str = REAL(fgetln)(stream, len);
7742 if (str && len) {
7743 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len));
7744 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, *len);
7745 }
7746 return str;
7747}
7748#define INIT_FGETLN COMMON_INTERCEPT_FUNCTION(fgetln)
7749#else
7750#define INIT_FGETLN
7751#endif
7752
7753#if SANITIZER_INTERCEPT_STRMODE
7754INTERCEPTOR(void, strmode, u32 mode, char *bp) {
7755 void *ctx;
7756 COMMON_INTERCEPTOR_ENTER(ctx, strmode, mode, bp);
7757 REAL(strmode)(mode, bp);
7758 if (bp)
7759 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, bp, internal_strlen(bp) + 1);
7760}
7761#define INIT_STRMODE COMMON_INTERCEPT_FUNCTION(strmode)
7762#else
7763#define INIT_STRMODE
7764#endif
7765
7766#if SANITIZER_INTERCEPT_TTYENT
7767INTERCEPTOR(struct __sanitizer_ttyent *, getttyent, void) {
7768 void *ctx;
7769 COMMON_INTERCEPTOR_ENTER(ctx, getttyent);
7770 struct __sanitizer_ttyent *ttyent = REAL(getttyent)();
7771 if (ttyent)
7772 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz);
7773 return ttyent;
7774}
7775INTERCEPTOR(struct __sanitizer_ttyent *, getttynam, char *name) {
7776 void *ctx;
7777 COMMON_INTERCEPTOR_ENTER(ctx, getttynam, name);
7778 if (name)
7779 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7780 struct __sanitizer_ttyent *ttyent = REAL(getttynam)(name);
7781 if (ttyent)
7782 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz);
7783 return ttyent;
7784}
7785#define INIT_TTYENT \
7786 COMMON_INTERCEPT_FUNCTION(getttyent); \
7787 COMMON_INTERCEPT_FUNCTION(getttynam);
7788#else
7789#define INIT_TTYENT
7790#endif
7791
7792#if SANITIZER_INTERCEPT_TTYENTPATH
7793INTERCEPTOR(int, setttyentpath, char *path) {
7794 void *ctx;
7795 COMMON_INTERCEPTOR_ENTER(ctx, setttyentpath, path);
7796 if (path)
7797 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7798 return REAL(setttyentpath)(path);
7799}
7800#define INIT_TTYENTPATH COMMON_INTERCEPT_FUNCTION(setttyentpath);
7801#else
7802#define INIT_TTYENTPATH
7803#endif
7804
7805#if SANITIZER_INTERCEPT_PROTOENT
7806static void write_protoent(void *ctx, struct __sanitizer_protoent *p) {
7807 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
7808
7809 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_name, internal_strlen(p->p_name) + 1);
7810
7811 SIZE_T pp_size = 1; // One handles the trailing \0
7812
7813 for (char **pp = p->p_aliases; *pp; ++pp, ++pp_size)
7814 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *pp, internal_strlen(*pp) + 1);
7815
7816 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_aliases, pp_size * sizeof(char *));
7817}
7818
7819INTERCEPTOR(struct __sanitizer_protoent *, getprotoent,) {
7820 void *ctx;
7821 COMMON_INTERCEPTOR_ENTER(ctx, getprotoent,);
7822 struct __sanitizer_protoent *p = REAL(getprotoent)();
7823 if (p)
7824 write_protoent(ctx, p);
7825 return p;
7826}
7827
7828INTERCEPTOR(struct __sanitizer_protoent *, getprotobyname, const char *name) {
7829 void *ctx;
7830 COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname, name);
7831 if (name)
7832 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7833 struct __sanitizer_protoent *p = REAL(getprotobyname)(name);
7834 if (p)
7835 write_protoent(ctx, p);
7836 return p;
7837}
7838
7839INTERCEPTOR(struct __sanitizer_protoent *, getprotobynumber, int proto) {
7840 void *ctx;
7841 COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber, proto);
7842 struct __sanitizer_protoent *p = REAL(getprotobynumber)(proto);
7843 if (p)
7844 write_protoent(ctx, p);
7845 return p;
7846}
7847#define INIT_PROTOENT \
7848 COMMON_INTERCEPT_FUNCTION(getprotoent); \
7849 COMMON_INTERCEPT_FUNCTION(getprotobyname); \
7850 COMMON_INTERCEPT_FUNCTION(getprotobynumber)
7851#else
7852#define INIT_PROTOENT
7853#endif
7854
7855#if SANITIZER_INTERCEPT_PROTOENT_R
7856INTERCEPTOR(int, getprotoent_r, struct __sanitizer_protoent *result_buf,
7857 char *buf, SIZE_T buflen, struct __sanitizer_protoent **result) {
7858 void *ctx;
7859 COMMON_INTERCEPTOR_ENTER(ctx, getprotoent_r, result_buf, buf, buflen,
7860 result);
7861 int res = REAL(getprotoent_r)(result_buf, buf, buflen, result);
7862
7863 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result);
7864 if (!res && *result)
7865 write_protoent(ctx, *result);
7866 return res;
7867}
7868
7869INTERCEPTOR(int, getprotobyname_r, const char *name,
7870 struct __sanitizer_protoent *result_buf, char *buf, SIZE_T buflen,
7871 struct __sanitizer_protoent **result) {
7872 void *ctx;
7873 COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname_r, name, result_buf, buf,
7874 buflen, result);
7875 if (name)
7876 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7877 int res = REAL(getprotobyname_r)(name, result_buf, buf, buflen, result);
7878
7879 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result);
7880 if (!res && *result)
7881 write_protoent(ctx, *result);
7882 return res;
7883}
7884
7885INTERCEPTOR(int, getprotobynumber_r, int num,
7886 struct __sanitizer_protoent *result_buf, char *buf,
7887 SIZE_T buflen, struct __sanitizer_protoent **result) {
7888 void *ctx;
7889 COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber_r, num, result_buf, buf,
7890 buflen, result);
7891 int res = REAL(getprotobynumber_r)(num, result_buf, buf, buflen, result);
7892
7893 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result);
7894 if (!res && *result)
7895 write_protoent(ctx, *result);
7896 return res;
7897}
7898
7899#define INIT_PROTOENT_R \
7900 COMMON_INTERCEPT_FUNCTION(getprotoent_r); \
7901 COMMON_INTERCEPT_FUNCTION(getprotobyname_r); \
7902 COMMON_INTERCEPT_FUNCTION(getprotobynumber_r);
7903#else
7904#define INIT_PROTOENT_R
7905#endif
7906
7907#if SANITIZER_INTERCEPT_NETENT
7908INTERCEPTOR(struct __sanitizer_netent *, getnetent,) {
7909 void *ctx;
7910 COMMON_INTERCEPTOR_ENTER(ctx, getnetent,);
7911 struct __sanitizer_netent *n = REAL(getnetent)();
7912 if (n) {
7913 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
7914
7915 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1);
7916
7917 SIZE_T nn_size = 1; // One handles the trailing \0
7918
7919 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size)
7920 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1);
7921
7922 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *));
7923 }
7924 return n;
7925}
7926
7927INTERCEPTOR(struct __sanitizer_netent *, getnetbyname, const char *name) {
7928 void *ctx;
7929 COMMON_INTERCEPTOR_ENTER(ctx, getnetbyname, name);
7930 if (name)
7931 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7932 struct __sanitizer_netent *n = REAL(getnetbyname)(name);
7933 if (n) {
7934 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
7935
7936 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1);
7937
7938 SIZE_T nn_size = 1; // One handles the trailing \0
7939
7940 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size)
7941 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1);
7942
7943 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *));
7944 }
7945 return n;
7946}
7947
7948INTERCEPTOR(struct __sanitizer_netent *, getnetbyaddr, u32 net, int type) {
7949 void *ctx;
7950 COMMON_INTERCEPTOR_ENTER(ctx, getnetbyaddr, net, type);
7951 struct __sanitizer_netent *n = REAL(getnetbyaddr)(net, type);
7952 if (n) {
7953 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
7954
7955 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1);
7956
7957 SIZE_T nn_size = 1; // One handles the trailing \0
7958
7959 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size)
7960 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1);
7961
7962 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *));
7963 }
7964 return n;
7965}
7966#define INIT_NETENT \
7967 COMMON_INTERCEPT_FUNCTION(getnetent); \
7968 COMMON_INTERCEPT_FUNCTION(getnetbyname); \
7969 COMMON_INTERCEPT_FUNCTION(getnetbyaddr)
7970#else
7971#define INIT_NETENT
7972#endif
7973
7974#if SANITIZER_INTERCEPT_GETMNTINFO
7975INTERCEPTOR(int, getmntinfo, void **mntbufp, int flags) {
7976 void *ctx;
7977 COMMON_INTERCEPTOR_ENTER(ctx, getmntinfo, mntbufp, flags);
7978 int cnt = REAL(getmntinfo)(mntbufp, flags);
7979 if (cnt > 0 && mntbufp) {
7980 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mntbufp, sizeof(void *));
7981 if (*mntbufp)
7982#if SANITIZER_NETBSD
7983 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statvfs_sz);
7984#else
7985 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statfs_sz);
7986#endif
7987 }
7988 return cnt;
7989}
7990#define INIT_GETMNTINFO COMMON_INTERCEPT_FUNCTION(getmntinfo)
7991#else
7992#define INIT_GETMNTINFO
7993#endif
7994
7995#if SANITIZER_INTERCEPT_MI_VECTOR_HASH
7996INTERCEPTOR(void, mi_vector_hash, const void *key, SIZE_T len, u32 seed,
7997 u32 hashes[3]) {
7998 void *ctx;
7999 COMMON_INTERCEPTOR_ENTER(ctx, mi_vector_hash, key, len, seed, hashes);
8000 if (key)
8001 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, len);
8002 REAL(mi_vector_hash)(key, len, seed, hashes);
8003 if (hashes)
8004 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hashes, sizeof(hashes[0]) * 3);
8005}
8006#define INIT_MI_VECTOR_HASH COMMON_INTERCEPT_FUNCTION(mi_vector_hash)
8007#else
8008#define INIT_MI_VECTOR_HASH
8009#endif
8010
8011#if SANITIZER_INTERCEPT_SETVBUF
8012INTERCEPTOR(int, setvbuf, __sanitizer_FILE *stream, char *buf, int mode,
8013 SIZE_T size) {
8014 void *ctx;
8015 COMMON_INTERCEPTOR_ENTER(ctx, setvbuf, stream, buf, mode, size);
8016 int ret = REAL(setvbuf)(stream, buf, mode, size);
8017 if (buf)
8018 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size);
8019 if (stream)
8020 unpoison_file(stream);
8021 return ret;
8022}
8023
8024INTERCEPTOR(void, setbuf, __sanitizer_FILE *stream, char *buf) {
8025 void *ctx;
8026 COMMON_INTERCEPTOR_ENTER(ctx, setbuf, stream, buf);
8027 REAL(setbuf)(stream, buf);
8028 if (buf) {
8029 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer_bufsiz);
8030 }
8031 if (stream)
8032 unpoison_file(stream);
8033}
8034
8035INTERCEPTOR(void, setbuffer, __sanitizer_FILE *stream, char *buf, SIZE_T size) {
8036 void *ctx;
8037 COMMON_INTERCEPTOR_ENTER(ctx, setbuffer, stream, buf, size);
8038 REAL(setbuffer)(stream, buf, size);
8039 if (buf) {
8040 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size);
8041 }
8042 if (stream)
8043 unpoison_file(stream);
8044}
8045
8046INTERCEPTOR(void, setlinebuf, __sanitizer_FILE *stream) {
8047 void *ctx;
8048 COMMON_INTERCEPTOR_ENTER(ctx, setlinebuf, stream);
8049 REAL(setlinebuf)(stream);
8050 if (stream)
8051 unpoison_file(stream);
8052}
8053#define INIT_SETVBUF COMMON_INTERCEPT_FUNCTION(setvbuf); \
8054 COMMON_INTERCEPT_FUNCTION(setbuf); \
8055 COMMON_INTERCEPT_FUNCTION(setbuffer); \
8056 COMMON_INTERCEPT_FUNCTION(setlinebuf)
8057#else
8058#define INIT_SETVBUF
8059#endif
8060
8061#if SANITIZER_INTERCEPT_GETVFSSTAT
8062INTERCEPTOR(int, getvfsstat, void *buf, SIZE_T bufsize, int flags) {
8063 void *ctx;
8064 COMMON_INTERCEPTOR_ENTER(ctx, getvfsstat, buf, bufsize, flags);
8065 int ret = REAL(getvfsstat)(buf, bufsize, flags);
8066 if (buf && ret > 0)
8067 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, ret * struct_statvfs_sz);
8068 return ret;
8069}
8070#define INIT_GETVFSSTAT COMMON_INTERCEPT_FUNCTION(getvfsstat)
8071#else
8072#define INIT_GETVFSSTAT
8073#endif
8074
8075#if SANITIZER_INTERCEPT_REGEX
8076INTERCEPTOR(int, regcomp, void *preg, const char *pattern, int cflags) {
8077 void *ctx;
8078 COMMON_INTERCEPTOR_ENTER(ctx, regcomp, preg, pattern, cflags);
8079 if (pattern)
8080 COMMON_INTERCEPTOR_READ_RANGE(ctx, pattern, internal_strlen(pattern) + 1);
8081 int res = REAL(regcomp)(preg, pattern, cflags);
8082 if (preg)
8083 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, preg, struct_regex_sz);
8084 return res;
8085}
8086INTERCEPTOR(int, regexec, const void *preg, const char *string, SIZE_T nmatch,
8087 struct __sanitizer_regmatch *pmatch[], int eflags) {
8088 void *ctx;
8089 COMMON_INTERCEPTOR_ENTER(ctx, regexec, preg, string, nmatch, pmatch, eflags);
8090 if (preg)
8091 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz);
8092 if (string)
8093 COMMON_INTERCEPTOR_READ_RANGE(ctx, string, internal_strlen(string) + 1);
8094 int res = REAL(regexec)(preg, string, nmatch, pmatch, eflags);
8095 if (!res && pmatch)
8096 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pmatch, nmatch * struct_regmatch_sz);
8097 return res;
8098}
8099INTERCEPTOR(SIZE_T, regerror, int errcode, const void *preg, char *errbuf,
8100 SIZE_T errbuf_size) {
8101 void *ctx;
8102 COMMON_INTERCEPTOR_ENTER(ctx, regerror, errcode, preg, errbuf, errbuf_size);
8103 if (preg)
8104 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz);
8105 SIZE_T res = REAL(regerror)(errcode, preg, errbuf, errbuf_size);
8106 if (errbuf)
8107 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errbuf, internal_strlen(errbuf) + 1);
8108 return res;
8109}
8110INTERCEPTOR(void, regfree, const void *preg) {
8111 void *ctx;
8112 COMMON_INTERCEPTOR_ENTER(ctx, regfree, preg);
8113 if (preg)
8114 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz);
8115 REAL(regfree)(preg);
8116}
8117#define INIT_REGEX \
8118 COMMON_INTERCEPT_FUNCTION(regcomp); \
8119 COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(regexec, "GLIBC_2.3.4"); \
8120 COMMON_INTERCEPT_FUNCTION(regerror); \
8121 COMMON_INTERCEPT_FUNCTION(regfree);
8122#else
8123#define INIT_REGEX
8124#endif
8125
8126#if SANITIZER_INTERCEPT_REGEXSUB
8127INTERCEPTOR(SSIZE_T, regnsub, char *buf, SIZE_T bufsiz, const char *sub,
8128 const struct __sanitizer_regmatch *rm, const char *str) {
8129 void *ctx;
8130 COMMON_INTERCEPTOR_ENTER(ctx, regnsub, buf, bufsiz, sub, rm, str);
8131 if (sub)
8132 COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, internal_strlen(sub) + 1);
8133 // The implementation demands and hardcodes 10 elements
8134 if (rm)
8135 COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz);
8136 if (str)
8137 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1);
8138 SSIZE_T res = REAL(regnsub)(buf, bufsiz, sub, rm, str);
8139 if (res > 0 && buf)
8140 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1);
8141 return res;
8142}
8143INTERCEPTOR(SSIZE_T, regasub, char **buf, const char *sub,
8144 const struct __sanitizer_regmatch *rm, const char *sstr) {
8145 void *ctx;
8146 COMMON_INTERCEPTOR_ENTER(ctx, regasub, buf, sub, rm, sstr);
8147 if (sub)
8148 COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, internal_strlen(sub) + 1);
8149 // Hardcode 10 elements as this is hardcoded size
8150 if (rm)
8151 COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz);
8152 if (sstr)
8153 COMMON_INTERCEPTOR_READ_RANGE(ctx, sstr, internal_strlen(sstr) + 1);
8154 SSIZE_T res = REAL(regasub)(buf, sub, rm, sstr);
8155 if (res > 0 && buf) {
8156 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sizeof(char *));
8157 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *buf, internal_strlen(*buf) + 1);
8158 }
8159 return res;
8160}
8161
8162#define INIT_REGEXSUB \
8163 COMMON_INTERCEPT_FUNCTION(regnsub); \
8164 COMMON_INTERCEPT_FUNCTION(regasub);
8165#else
8166#define INIT_REGEXSUB
8167#endif
8168
8169#if SANITIZER_INTERCEPT_FTS
8170INTERCEPTOR(void *, fts_open, char *const *path_argv, int options,
8171 int (*compar)(void **, void **)) {
8172 void *ctx;
8173 COMMON_INTERCEPTOR_ENTER(ctx, fts_open, path_argv, options, compar);
8174 if (path_argv) {
8175 for (char *const *pa = path_argv; ; ++pa) {
8176 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **));
8177 if (!*pa)
8178 break;
8179 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1);
8180 }
8181 }
8182 // TODO(kamil): handle compar callback
8183 void *fts = REAL(fts_open)(path_argv, options, compar);
8184 if (fts)
8185 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, fts, struct_FTS_sz);
8186 return fts;
8187}
8188
8189INTERCEPTOR(void *, fts_read, void *ftsp) {
8190 void *ctx;
8191 COMMON_INTERCEPTOR_ENTER(ctx, fts_read, ftsp);
8192 if (ftsp)
8193 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz);
8194 void *ftsent = REAL(fts_read)(ftsp);
8195 if (ftsent)
8196 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz);
8197 return ftsent;
8198}
8199
8200INTERCEPTOR(void *, fts_children, void *ftsp, int options) {
8201 void *ctx;
8202 COMMON_INTERCEPTOR_ENTER(ctx, fts_children, ftsp, options);
8203 if (ftsp)
8204 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz);
8205 void *ftsent = REAL(fts_children)(ftsp, options);
8206 if (ftsent)
8207 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz);
8208 return ftsent;
8209}
8210
8211INTERCEPTOR(int, fts_set, void *ftsp, void *f, int options) {
8212 void *ctx;
8213 COMMON_INTERCEPTOR_ENTER(ctx, fts_set, ftsp, f, options);
8214 if (ftsp)
8215 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz);
8216 if (f)
8217 COMMON_INTERCEPTOR_READ_RANGE(ctx, f, struct_FTSENT_sz);
8218 return REAL(fts_set)(ftsp, f, options);
8219}
8220
8221INTERCEPTOR(int, fts_close, void *ftsp) {
8222 void *ctx;
8223 COMMON_INTERCEPTOR_ENTER(ctx, fts_close, ftsp);
8224 if (ftsp)
8225 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz);
8226 return REAL(fts_close)(ftsp);
8227}
8228#define INIT_FTS \
8229 COMMON_INTERCEPT_FUNCTION(fts_open); \
8230 COMMON_INTERCEPT_FUNCTION(fts_read); \
8231 COMMON_INTERCEPT_FUNCTION(fts_children); \
8232 COMMON_INTERCEPT_FUNCTION(fts_set); \
8233 COMMON_INTERCEPT_FUNCTION(fts_close);
8234#else
8235#define INIT_FTS
8236#endif
8237
8238#if SANITIZER_INTERCEPT_SYSCTL
8239INTERCEPTOR(int, sysctl, int *name, unsigned int namelen, void *oldp,
8240 SIZE_T *oldlenp, void *newp, SIZE_T newlen) {
8241 void *ctx;
8242 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
8243 return internal_sysctl(name, namelen, oldp, oldlenp, newp, newlen);
8244 COMMON_INTERCEPTOR_ENTER(ctx, sysctl, name, namelen, oldp, oldlenp, newp,
8245 newlen);
8246 if (name)
8247 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, namelen * sizeof(*name));
8248 if (oldlenp)
8249 COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp));
8250 if (newp && newlen)
8251 COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen);
8252 int res = REAL(sysctl)(name, namelen, oldp, oldlenp, newp, newlen);
8253 if (!res) {
8254 if (oldlenp) {
8255 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp));
8256 if (oldp)
8257 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp);
8258 }
8259 }
8260 return res;
8261}
8262
8263INTERCEPTOR(int, sysctlbyname, char *sname, void *oldp, SIZE_T *oldlenp,
8264 void *newp, SIZE_T newlen) {
8265 void *ctx;
8266 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
8267 return internal_sysctlbyname(sname, oldp, oldlenp, newp, newlen);
8268 COMMON_INTERCEPTOR_ENTER(ctx, sysctlbyname, sname, oldp, oldlenp, newp,
8269 newlen);
8270 if (sname)
8271 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1);
8272 if (oldlenp)
8273 COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp));
8274 if (newp && newlen)
8275 COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen);
8276 int res = REAL(sysctlbyname)(sname, oldp, oldlenp, newp, newlen);
8277 if (!res) {
8278 if (oldlenp) {
8279 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp));
8280 if (oldp)
8281 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp);
8282 }
8283 }
8284 return res;
8285}
8286
8287INTERCEPTOR(int, sysctlnametomib, const char *sname, int *name,
8288 SIZE_T *namelenp) {
8289 void *ctx;
8290 COMMON_INTERCEPTOR_ENTER(ctx, sysctlnametomib, sname, name, namelenp);
8291 if (sname)
8292 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1);
8293 if (namelenp)
8294 COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp));
8295 int res = REAL(sysctlnametomib)(sname, name, namelenp);
8296 if (!res) {
8297 if (namelenp) {
8298 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp));
8299 if (name)
8300 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name));
8301 }
8302 }
8303 return res;
8304}
8305
8306#define INIT_SYSCTL \
8307 COMMON_INTERCEPT_FUNCTION(sysctl); \
8308 COMMON_INTERCEPT_FUNCTION(sysctlbyname); \
8309 COMMON_INTERCEPT_FUNCTION(sysctlnametomib);
8310#else
8311#define INIT_SYSCTL
8312#endif
8313
8314#if SANITIZER_INTERCEPT_ASYSCTL
8315INTERCEPTOR(void *, asysctl, const int *name, SIZE_T namelen, SIZE_T *len) {
8316 void *ctx;
8317 COMMON_INTERCEPTOR_ENTER(ctx, asysctl, name, namelen, len);
8318 if (name)
8319 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, sizeof(*name) * namelen);
8320 void *res = REAL(asysctl)(name, namelen, len);
8321 if (res && len) {
8322 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len));
8323 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len);
8324 }
8325 return res;
8326}
8327
8328INTERCEPTOR(void *, asysctlbyname, const char *sname, SIZE_T *len) {
8329 void *ctx;
8330 COMMON_INTERCEPTOR_ENTER(ctx, asysctlbyname, sname, len);
8331 if (sname)
8332 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1);
8333 void *res = REAL(asysctlbyname)(sname, len);
8334 if (res && len) {
8335 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len));
8336 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len);
8337 }
8338 return res;
8339}
8340#define INIT_ASYSCTL \
8341 COMMON_INTERCEPT_FUNCTION(asysctl); \
8342 COMMON_INTERCEPT_FUNCTION(asysctlbyname);
8343#else
8344#define INIT_ASYSCTL
8345#endif
8346
8347#if SANITIZER_INTERCEPT_SYSCTLGETMIBINFO
8348INTERCEPTOR(int, sysctlgetmibinfo, char *sname, int *name,
8349 unsigned int *namelenp, char *cname, SIZE_T *csz, void **rnode,
8350 int v) {
8351 void *ctx;
8352 COMMON_INTERCEPTOR_ENTER(ctx, sysctlgetmibinfo, sname, name, namelenp, cname,
8353 csz, rnode, v);
8354 if (sname)
8355 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1);
8356 if (namelenp)
8357 COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp));
8358 if (csz)
8359 COMMON_INTERCEPTOR_READ_RANGE(ctx, csz, sizeof(*csz));
8360 // Skip rnode, it's rarely used and not trivial to sanitize
8361 // It's also used mostly internally
8362 int res = REAL(sysctlgetmibinfo)(sname, name, namelenp, cname, csz, rnode, v);
8363 if (!res) {
8364 if (namelenp) {
8365 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp));
8366 if (name)
8367 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name));
8368 }
8369 if (csz) {
8370 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, csz, sizeof(*csz));
8371 if (cname)
8372 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cname, *csz);
8373 }
8374 }
8375 return res;
8376}
8377#define INIT_SYSCTLGETMIBINFO \
8378 COMMON_INTERCEPT_FUNCTION(sysctlgetmibinfo);
8379#else
8380#define INIT_SYSCTLGETMIBINFO
8381#endif
8382
8383#if SANITIZER_INTERCEPT_NL_LANGINFO
8384INTERCEPTOR(char *, nl_langinfo, long item) {
8385 void *ctx;
8386 COMMON_INTERCEPTOR_ENTER(ctx, nl_langinfo, item);
8387 char *ret = REAL(nl_langinfo)(item);
8388 if (ret)
8389 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, internal_strlen(ret) + 1);
8390 return ret;
8391}
8392#define INIT_NL_LANGINFO COMMON_INTERCEPT_FUNCTION(nl_langinfo)
8393#else
8394#define INIT_NL_LANGINFO
8395#endif
8396
8397#if SANITIZER_INTERCEPT_MODCTL
8398INTERCEPTOR(int, modctl, int operation, void *argp) {
8399 void *ctx;
8400 int ret;
8401 COMMON_INTERCEPTOR_ENTER(ctx, modctl, operation, argp);
8402
8403 if (operation == modctl_load) {
8404 if (argp) {
8405 __sanitizer_modctl_load_t *ml = (__sanitizer_modctl_load_t *)argp;
8406 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml, sizeof(*ml));
8407 if (ml->ml_filename)
8408 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_filename,
8409 internal_strlen(ml->ml_filename) + 1);
8410 if (ml->ml_props)
8411 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_props, ml->ml_propslen);
8412 }
8413 ret = REAL(modctl)(operation, argp);
8414 } else if (operation == modctl_unload) {
8415 if (argp) {
8416 const char *name = (const char *)argp;
8417 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
8418 }
8419 ret = REAL(modctl)(operation, argp);
8420 } else if (operation == modctl_stat) {
8421 uptr iov_len;
8422 struct __sanitizer_iovec *iov = (struct __sanitizer_iovec *)argp;
8423 if (iov) {
8424 COMMON_INTERCEPTOR_READ_RANGE(ctx, iov, sizeof(*iov));
8425 iov_len = iov->iov_len;
8426 }
8427 ret = REAL(modctl)(operation, argp);
8428 if (iov)
8429 COMMON_INTERCEPTOR_WRITE_RANGE(
8430 ctx, iov->iov_base, Min(iov_len, iov->iov_len));
8431 } else if (operation == modctl_exists) {
8432 ret = REAL(modctl)(operation, argp);
8433 } else {
8434 ret = REAL(modctl)(operation, argp);
8435 }
8436
8437 return ret;
8438}
8439#define INIT_MODCTL COMMON_INTERCEPT_FUNCTION(modctl)
8440#else
8441#define INIT_MODCTL
8442#endif
8443
8444#if SANITIZER_INTERCEPT_STRTONUM
8445INTERCEPTOR(long long, strtonum, const char *nptr, long long minval,
8446 long long maxval, const char **errstr) {
8447 void *ctx;
8448 COMMON_INTERCEPTOR_ENTER(ctx, strtonum, nptr, minval, maxval, errstr);
8449
8450 // TODO(kamil): Implement strtoll as a common inteceptor
8451 char *real_endptr;
8452 long long ret = (long long)REAL(strtoimax)(nptr, &real_endptr, 10);
8453 StrtolFixAndCheck(ctx, nptr, nullptr, real_endptr, 10);
8454
8455 ret = REAL(strtonum)(nptr, minval, maxval, errstr);
8456 if (errstr) {
8457 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errstr, sizeof(const char *));
8458 if (*errstr)
8459 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *errstr, internal_strlen(*errstr) + 1);
8460 }
8461 return ret;
8462}
8463#define INIT_STRTONUM COMMON_INTERCEPT_FUNCTION(strtonum)
8464#else
8465#define INIT_STRTONUM
8466#endif
8467
8468#if SANITIZER_INTERCEPT_FPARSELN
8469INTERCEPTOR(char *, fparseln, __sanitizer_FILE *stream, SIZE_T *len,
8470 SIZE_T *lineno, const char delim[3], int flags) {
8471 void *ctx;
8472 COMMON_INTERCEPTOR_ENTER(ctx, fparseln, stream, len, lineno, delim, flags);
8473 if (lineno)
8474 COMMON_INTERCEPTOR_READ_RANGE(ctx, lineno, sizeof(*lineno));
8475 if (delim)
8476 COMMON_INTERCEPTOR_READ_RANGE(ctx, delim, sizeof(delim[0]) * 3);
8477 char *ret = REAL(fparseln)(stream, len, lineno, delim, flags);
8478 if (ret) {
8479 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, internal_strlen(ret) + 1);
8480 if (len)
8481 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len));
8482 if (lineno)
8483 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineno, sizeof(*lineno));
8484 }
8485 return ret;
8486}
8487#define INIT_FPARSELN COMMON_INTERCEPT_FUNCTION(fparseln)
8488#else
8489#define INIT_FPARSELN
8490#endif
8491
8492#if SANITIZER_INTERCEPT_STATVFS1
8493INTERCEPTOR(int, statvfs1, const char *path, void *buf, int flags) {
8494 void *ctx;
8495 COMMON_INTERCEPTOR_ENTER(ctx, statvfs1, path, buf, flags);
8496 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
8497 int res = REAL(statvfs1)(path, buf, flags);
8498 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
8499 return res;
8500}
8501INTERCEPTOR(int, fstatvfs1, int fd, void *buf, int flags) {
8502 void *ctx;
8503 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs1, fd, buf, flags);
8504 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
8505 int res = REAL(fstatvfs1)(fd, buf, flags);
8506 if (!res) {
8507 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
8508 if (fd >= 0)
8509 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
8510 }
8511 return res;
8512}
8513#define INIT_STATVFS1 \
8514 COMMON_INTERCEPT_FUNCTION(statvfs1); \
8515 COMMON_INTERCEPT_FUNCTION(fstatvfs1);
8516#else
8517#define INIT_STATVFS1
8518#endif
8519
8520#if SANITIZER_INTERCEPT_STRTOI
8521INTERCEPTOR(INTMAX_T, strtoi, const char *nptr, char **endptr, int base,
8522 INTMAX_T low, INTMAX_T high, int *rstatus) {
8523 void *ctx;
8524 COMMON_INTERCEPTOR_ENTER(ctx, strtoi, nptr, endptr, base, low, high, rstatus);
8525 char *real_endptr;
8526 INTMAX_T ret = REAL(strtoi)(nptr, &real_endptr, base, low, high, rstatus);
8527 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base);
8528 if (rstatus)
8529 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus));
8530 return ret;
8531}
8532
8533INTERCEPTOR(UINTMAX_T, strtou, const char *nptr, char **endptr, int base,
8534 UINTMAX_T low, UINTMAX_T high, int *rstatus) {
8535 void *ctx;
8536 COMMON_INTERCEPTOR_ENTER(ctx, strtou, nptr, endptr, base, low, high, rstatus);
8537 char *real_endptr;
8538 UINTMAX_T ret = REAL(strtou)(nptr, &real_endptr, base, low, high, rstatus);
8539 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base);
8540 if (rstatus)
8541 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus));
8542 return ret;
8543}
8544#define INIT_STRTOI \
8545 COMMON_INTERCEPT_FUNCTION(strtoi); \
8546 COMMON_INTERCEPT_FUNCTION(strtou)
8547#else
8548#define INIT_STRTOI
8549#endif
8550
8551#if SANITIZER_INTERCEPT_CAPSICUM
8552#define CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights, ...) \
8553 { \
8554 void *ctx; \
8555 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_init, rights, ##__VA_ARGS__); \
8556 if (rights) \
8557 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
8558 __sanitizer_cap_rights_t *ret = \
8559 REAL(cap_rights_init)(rights, ##__VA_ARGS__); \
8560 if (ret) \
8561 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
8562 return ret; \
8563 }
8564
8565#define CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights, ...) \
8566 { \
8567 void *ctx; \
8568 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_set, rights, ##__VA_ARGS__); \
8569 if (rights) \
8570 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
8571 __sanitizer_cap_rights_t *ret = \
8572 REAL(cap_rights_set)(rights, ##__VA_ARGS__); \
8573 if (ret) \
8574 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
8575 return ret; \
8576 }
8577
8578#define CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights, ...) \
8579 { \
8580 void *ctx; \
8581 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_clear, rights, ##__VA_ARGS__); \
8582 if (rights) \
8583 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
8584 __sanitizer_cap_rights_t *ret = \
8585 REAL(cap_rights_clear)(rights, ##__VA_ARGS__); \
8586 if (ret) \
8587 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
8588 return ret; \
8589 }
8590
8591#define CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights, ...) \
8592 { \
8593 void *ctx; \
8594 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_set, rights, ##__VA_ARGS__); \
8595 if (rights) \
8596 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
8597 return REAL(cap_rights_is_set)(rights, ##__VA_ARGS__); \
8598 }
8599
8600INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_init,
8601 __sanitizer_cap_rights_t *rights) {
8602 CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights);
8603}
8604
8605INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_set,
8606 __sanitizer_cap_rights_t *rights) {
8607 CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights);
8608}
8609
8610INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_clear,
8611 __sanitizer_cap_rights_t *rights) {
8612 CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights);
8613}
8614
8615INTERCEPTOR(bool, cap_rights_is_set,
8616 __sanitizer_cap_rights_t *rights) {
8617 CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights);
8618}
8619
8620INTERCEPTOR(int, cap_rights_limit, int fd,
8621 const __sanitizer_cap_rights_t *rights) {
8622 void *ctx;
8623 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_limit, fd, rights);
8624 if (rights)
8625 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights));
8626
8627 return REAL(cap_rights_limit)(fd, rights);
8628}
8629
8630INTERCEPTOR(int, cap_rights_get, int fd, __sanitizer_cap_rights_t *rights) {
8631 void *ctx;
8632 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_get, fd, rights);
8633 int ret = REAL(cap_rights_get)(fd, rights);
8634 if (!ret && rights)
8635 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rights, sizeof(*rights));
8636
8637 return ret;
8638}
8639
8640INTERCEPTOR(bool, cap_rights_is_valid, const __sanitizer_cap_rights_t *rights) {
8641 void *ctx;
8642 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_valid, rights);
8643 if (rights)
8644 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights));
8645
8646 return REAL(cap_rights_is_valid(rights));
8647}
8648
8649INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_merge,
8650 __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) {
8651 void *ctx;
8652 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_merge, dst, src);
8653 if (src)
8654 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
8655
8656 __sanitizer_cap_rights *ret = REAL(cap_rights_merge)(dst, src);
8657 if (dst)
8658 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst));
8659
8660 return ret;
8661}
8662
8663INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_remove,
8664 __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) {
8665 void *ctx;
8666 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_remove, dst, src);
8667 if (src)
8668 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
8669
8670 __sanitizer_cap_rights *ret = REAL(cap_rights_remove)(dst, src);
8671 if (dst)
8672 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst));
8673
8674 return ret;
8675}
8676
8677INTERCEPTOR(bool, cap_rights_contains, const __sanitizer_cap_rights *big,
8678 const __sanitizer_cap_rights *little) {
8679 void *ctx;
8680 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_contains, big, little);
8681 if (little)
8682 COMMON_INTERCEPTOR_READ_RANGE(ctx, little, sizeof(*little));
8683 if (big)
8684 COMMON_INTERCEPTOR_READ_RANGE(ctx, big, sizeof(*big));
8685
8686 return REAL(cap_rights_contains)(big, little);
8687}
8688
8689INTERCEPTOR(int, cap_ioctls_limit, int fd, const uptr *cmds, SIZE_T ncmds) {
8690 void *ctx;
8691 COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_limit, fd, cmds, ncmds);
8692 if (cmds)
8693 COMMON_INTERCEPTOR_READ_RANGE(ctx, cmds, sizeof(*cmds) * ncmds);
8694
8695 return REAL(cap_ioctls_limit)(fd, cmds, ncmds);
8696}
8697
8698INTERCEPTOR(int, cap_ioctls_get, int fd, uptr *cmds, SIZE_T maxcmds) {
8699 void *ctx;
8700 COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_get, fd, cmds, maxcmds);
8701 int ret = REAL(cap_ioctls_get)(fd, cmds, maxcmds);
8702 if (!ret && cmds)
8703 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cmds, sizeof(*cmds) * maxcmds);
8704
8705 return ret;
8706}
8707#define INIT_CAPSICUM \
8708 COMMON_INTERCEPT_FUNCTION(cap_rights_init); \
8709 COMMON_INTERCEPT_FUNCTION(cap_rights_set); \
8710 COMMON_INTERCEPT_FUNCTION(cap_rights_clear); \
8711 COMMON_INTERCEPT_FUNCTION(cap_rights_is_set); \
8712 COMMON_INTERCEPT_FUNCTION(cap_rights_get); \
8713 COMMON_INTERCEPT_FUNCTION(cap_rights_limit); \
8714 COMMON_INTERCEPT_FUNCTION(cap_rights_contains); \
8715 COMMON_INTERCEPT_FUNCTION(cap_rights_remove); \
8716 COMMON_INTERCEPT_FUNCTION(cap_rights_merge); \
8717 COMMON_INTERCEPT_FUNCTION(cap_rights_is_valid); \
8718 COMMON_INTERCEPT_FUNCTION(cap_ioctls_get); \
8719 COMMON_INTERCEPT_FUNCTION(cap_ioctls_limit)
8720#else
8721#define INIT_CAPSICUM
8722#endif
8723
8724#if SANITIZER_INTERCEPT_SHA1
8725INTERCEPTOR(void, SHA1Init, void *context) {
8726 void *ctx;
8727 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Init, context);
8728 REAL(SHA1Init)(context);
8729 if (context)
8730 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz);
8731}
8732INTERCEPTOR(void, SHA1Update, void *context, const u8 *data, unsigned len) {
8733 void *ctx;
8734 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Update, context, data, len);
8735 if (data && len > 0)
8736 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8737 if (context)
8738 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz);
8739 REAL(SHA1Update)(context, data, len);
8740 if (context)
8741 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz);
8742}
8743INTERCEPTOR(void, SHA1Final, u8 digest[20], void *context) {
8744 void *ctx;
8745 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Final, digest, context);
8746 if (context)
8747 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz);
8748 REAL(SHA1Final)(digest, context);
8749 if (digest)
8750 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20);
8751}
8752INTERCEPTOR(void, SHA1Transform, u32 state[5], u8 buffer[64]) {
8753 void *ctx;
8754 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Transform, state, buffer);
8755 if (state)
8756 COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5);
8757 if (buffer)
8758 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u8) * 64);
8759 REAL(SHA1Transform)(state, buffer);
8760 if (state)
8761 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5);
8762}
8763INTERCEPTOR(char *, SHA1End, void *context, char *buf) {
8764 void *ctx;
8765 COMMON_INTERCEPTOR_ENTER(ctx, SHA1End, context, buf);
8766 if (context)
8767 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz);
8768 char *ret = REAL(SHA1End)(context, buf);
8769 if (ret)
8770 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length);
8771 return ret;
8772}
8773INTERCEPTOR(char *, SHA1File, char *filename, char *buf) {
8774 void *ctx;
8775 COMMON_INTERCEPTOR_ENTER(ctx, SHA1File, filename, buf);
8776 if (filename)
8777 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8778 char *ret = REAL(SHA1File)(filename, buf);
8779 if (ret)
8780 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length);
8781 return ret;
8782}
8783INTERCEPTOR(char *, SHA1FileChunk, char *filename, char *buf, OFF_T offset,
8784 OFF_T length) {
8785 void *ctx;
8786 COMMON_INTERCEPTOR_ENTER(ctx, SHA1FileChunk, filename, buf, offset, length);
8787 if (filename)
8788 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8789 char *ret = REAL(SHA1FileChunk)(filename, buf, offset, length);
8790 if (ret)
8791 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length);
8792 return ret;
8793}
8794INTERCEPTOR(char *, SHA1Data, u8 *data, SIZE_T len, char *buf) {
8795 void *ctx;
8796 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Data, data, len, buf);
8797 if (data)
8798 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8799 char *ret = REAL(SHA1Data)(data, len, buf);
8800 if (ret)
8801 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length);
8802 return ret;
8803}
8804#define INIT_SHA1 \
8805 COMMON_INTERCEPT_FUNCTION(SHA1Init); \
8806 COMMON_INTERCEPT_FUNCTION(SHA1Update); \
8807 COMMON_INTERCEPT_FUNCTION(SHA1Final); \
8808 COMMON_INTERCEPT_FUNCTION(SHA1Transform); \
8809 COMMON_INTERCEPT_FUNCTION(SHA1End); \
8810 COMMON_INTERCEPT_FUNCTION(SHA1File); \
8811 COMMON_INTERCEPT_FUNCTION(SHA1FileChunk); \
8812 COMMON_INTERCEPT_FUNCTION(SHA1Data)
8813#else
8814#define INIT_SHA1
8815#endif
8816
8817#if SANITIZER_INTERCEPT_MD4
8818INTERCEPTOR(void, MD4Init, void *context) {
8819 void *ctx;
8820 COMMON_INTERCEPTOR_ENTER(ctx, MD4Init, context);
8821 REAL(MD4Init)(context);
8822 if (context)
8823 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz);
8824}
8825
8826INTERCEPTOR(void, MD4Update, void *context, const unsigned char *data,
8827 unsigned int len) {
8828 void *ctx;
8829 COMMON_INTERCEPTOR_ENTER(ctx, MD4Update, context, data, len);
8830 if (data && len > 0)
8831 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8832 if (context)
8833 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz);
8834 REAL(MD4Update)(context, data, len);
8835 if (context)
8836 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz);
8837}
8838
8839INTERCEPTOR(void, MD4Final, unsigned char digest[16], void *context) {
8840 void *ctx;
8841 COMMON_INTERCEPTOR_ENTER(ctx, MD4Final, digest, context);
8842 if (context)
8843 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz);
8844 REAL(MD4Final)(digest, context);
8845 if (digest)
8846 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16);
8847}
8848
8849INTERCEPTOR(char *, MD4End, void *context, char *buf) {
8850 void *ctx;
8851 COMMON_INTERCEPTOR_ENTER(ctx, MD4End, context, buf);
8852 if (context)
8853 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz);
8854 char *ret = REAL(MD4End)(context, buf);
8855 if (ret)
8856 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length);
8857 return ret;
8858}
8859
8860INTERCEPTOR(char *, MD4File, const char *filename, char *buf) {
8861 void *ctx;
8862 COMMON_INTERCEPTOR_ENTER(ctx, MD4File, filename, buf);
8863 if (filename)
8864 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8865 char *ret = REAL(MD4File)(filename, buf);
8866 if (ret)
8867 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length);
8868 return ret;
8869}
8870
8871INTERCEPTOR(char *, MD4Data, const unsigned char *data, unsigned int len,
8872 char *buf) {
8873 void *ctx;
8874 COMMON_INTERCEPTOR_ENTER(ctx, MD4Data, data, len, buf);
8875 if (data && len > 0)
8876 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8877 char *ret = REAL(MD4Data)(data, len, buf);
8878 if (ret)
8879 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length);
8880 return ret;
8881}
8882
8883#define INIT_MD4 \
8884 COMMON_INTERCEPT_FUNCTION(MD4Init); \
8885 COMMON_INTERCEPT_FUNCTION(MD4Update); \
8886 COMMON_INTERCEPT_FUNCTION(MD4Final); \
8887 COMMON_INTERCEPT_FUNCTION(MD4End); \
8888 COMMON_INTERCEPT_FUNCTION(MD4File); \
8889 COMMON_INTERCEPT_FUNCTION(MD4Data)
8890#else
8891#define INIT_MD4
8892#endif
8893
8894#if SANITIZER_INTERCEPT_RMD160
8895INTERCEPTOR(void, RMD160Init, void *context) {
8896 void *ctx;
8897 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Init, context);
8898 REAL(RMD160Init)(context);
8899 if (context)
8900 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz);
8901}
8902INTERCEPTOR(void, RMD160Update, void *context, const u8 *data, unsigned len) {
8903 void *ctx;
8904 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Update, context, data, len);
8905 if (data && len > 0)
8906 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8907 if (context)
8908 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz);
8909 REAL(RMD160Update)(context, data, len);
8910 if (context)
8911 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz);
8912}
8913INTERCEPTOR(void, RMD160Final, u8 digest[20], void *context) {
8914 void *ctx;
8915 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Final, digest, context);
8916 if (context)
8917 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz);
8918 REAL(RMD160Final)(digest, context);
8919 if (digest)
8920 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20);
8921}
8922INTERCEPTOR(void, RMD160Transform, u32 state[5], u16 buffer[16]) {
8923 void *ctx;
8924 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Transform, state, buffer);
8925 if (state)
8926 COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5);
8927 if (buffer)
8928 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u32) * 16);
8929 REAL(RMD160Transform)(state, buffer);
8930 if (state)
8931 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5);
8932}
8933INTERCEPTOR(char *, RMD160End, void *context, char *buf) {
8934 void *ctx;
8935 COMMON_INTERCEPTOR_ENTER(ctx, RMD160End, context, buf);
8936 if (context)
8937 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz);
8938 char *ret = REAL(RMD160End)(context, buf);
8939 if (ret)
8940 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length);
8941 return ret;
8942}
8943INTERCEPTOR(char *, RMD160File, char *filename, char *buf) {
8944 void *ctx;
8945 COMMON_INTERCEPTOR_ENTER(ctx, RMD160File, filename, buf);
8946 if (filename)
8947 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8948 char *ret = REAL(RMD160File)(filename, buf);
8949 if (ret)
8950 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length);
8951 return ret;
8952}
8953INTERCEPTOR(char *, RMD160FileChunk, char *filename, char *buf, OFF_T offset,
8954 OFF_T length) {
8955 void *ctx;
8956 COMMON_INTERCEPTOR_ENTER(ctx, RMD160FileChunk, filename, buf, offset, length);
8957 if (filename)
8958 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8959 char *ret = REAL(RMD160FileChunk)(filename, buf, offset, length);
8960 if (ret)
8961 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length);
8962 return ret;
8963}
8964INTERCEPTOR(char *, RMD160Data, u8 *data, SIZE_T len, char *buf) {
8965 void *ctx;
8966 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Data, data, len, buf);
8967 if (data && len > 0)
8968 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8969 char *ret = REAL(RMD160Data)(data, len, buf);
8970 if (ret)
8971 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length);
8972 return ret;
8973}
8974#define INIT_RMD160 \
8975 COMMON_INTERCEPT_FUNCTION(RMD160Init); \
8976 COMMON_INTERCEPT_FUNCTION(RMD160Update); \
8977 COMMON_INTERCEPT_FUNCTION(RMD160Final); \
8978 COMMON_INTERCEPT_FUNCTION(RMD160Transform); \
8979 COMMON_INTERCEPT_FUNCTION(RMD160End); \
8980 COMMON_INTERCEPT_FUNCTION(RMD160File); \
8981 COMMON_INTERCEPT_FUNCTION(RMD160FileChunk); \
8982 COMMON_INTERCEPT_FUNCTION(RMD160Data)
8983#else
8984#define INIT_RMD160
8985#endif
8986
8987#if SANITIZER_INTERCEPT_FSEEK
8988INTERCEPTOR(int, fseek, __sanitizer_FILE *stream, long int offset, int whence) {
8989 void *ctx;
8990 COMMON_INTERCEPTOR_ENTER(ctx, fseek, stream, offset, whence);
8991 return REAL(fseek)(stream, offset, whence);
8992}
8993INTERCEPTOR(int, fseeko, __sanitizer_FILE *stream, OFF_T offset, int whence) {
8994 void *ctx;
8995 COMMON_INTERCEPTOR_ENTER(ctx, fseeko, stream, offset, whence);
8996 return REAL(fseeko)(stream, offset, whence);
8997}
8998INTERCEPTOR(long int, ftell, __sanitizer_FILE *stream) {
8999 void *ctx;
9000 COMMON_INTERCEPTOR_ENTER(ctx, ftell, stream);
9001 return REAL(ftell)(stream);
9002}
9003INTERCEPTOR(OFF_T, ftello, __sanitizer_FILE *stream) {
9004 void *ctx;
9005 COMMON_INTERCEPTOR_ENTER(ctx, ftello, stream);
9006 return REAL(ftello)(stream);
9007}
9008INTERCEPTOR(void, rewind, __sanitizer_FILE *stream) {
9009 void *ctx;
9010 COMMON_INTERCEPTOR_ENTER(ctx, rewind, stream);
9011 return REAL(rewind)(stream);
9012}
9013INTERCEPTOR(int, fgetpos, __sanitizer_FILE *stream, void *pos) {
9014 void *ctx;
9015 COMMON_INTERCEPTOR_ENTER(ctx, fgetpos, stream, pos);
9016 int ret = REAL(fgetpos)(stream, pos);
9017 if (pos && !ret)
9018 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pos, fpos_t_sz);
9019 return ret;
9020}
9021INTERCEPTOR(int, fsetpos, __sanitizer_FILE *stream, const void *pos) {
9022 void *ctx;
9023 COMMON_INTERCEPTOR_ENTER(ctx, fsetpos, stream, pos);
9024 if (pos)
9025 COMMON_INTERCEPTOR_READ_RANGE(ctx, pos, fpos_t_sz);
9026 return REAL(fsetpos)(stream, pos);
9027}
9028#define INIT_FSEEK \
9029 COMMON_INTERCEPT_FUNCTION(fseek); \
9030 COMMON_INTERCEPT_FUNCTION(fseeko); \
9031 COMMON_INTERCEPT_FUNCTION(ftell); \
9032 COMMON_INTERCEPT_FUNCTION(ftello); \
9033 COMMON_INTERCEPT_FUNCTION(rewind); \
9034 COMMON_INTERCEPT_FUNCTION(fgetpos); \
9035 COMMON_INTERCEPT_FUNCTION(fsetpos)
9036#else
9037#define INIT_FSEEK
9038#endif
9039
9040#if SANITIZER_INTERCEPT_MD2
9041INTERCEPTOR(void, MD2Init, void *context) {
9042 void *ctx;
9043 COMMON_INTERCEPTOR_ENTER(ctx, MD2Init, context);
9044 REAL(MD2Init)(context);
9045 if (context)
9046 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz);
9047}
9048
9049INTERCEPTOR(void, MD2Update, void *context, const unsigned char *data,
9050 unsigned int len) {
9051 void *ctx;
9052 COMMON_INTERCEPTOR_ENTER(ctx, MD2Update, context, data, len);
9053 if (data && len > 0)
9054 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
9055 if (context)
9056 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz);
9057 REAL(MD2Update)(context, data, len);
9058 if (context)
9059 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz);
9060}
9061
9062INTERCEPTOR(void, MD2Final, unsigned char digest[16], void *context) {
9063 void *ctx;
9064 COMMON_INTERCEPTOR_ENTER(ctx, MD2Final, digest, context);
9065 if (context)
9066 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz);
9067 REAL(MD2Final)(digest, context);
9068 if (digest)
9069 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16);
9070}
9071
9072INTERCEPTOR(char *, MD2End, void *context, char *buf) {
9073 void *ctx;
9074 COMMON_INTERCEPTOR_ENTER(ctx, MD2End, context, buf);
9075 if (context)
9076 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz);
9077 char *ret = REAL(MD2End)(context, buf);
9078 if (ret)
9079 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length);
9080 return ret;
9081}
9082
9083INTERCEPTOR(char *, MD2File, const char *filename, char *buf) {
9084 void *ctx;
9085 COMMON_INTERCEPTOR_ENTER(ctx, MD2File, filename, buf);
9086 if (filename)
9087 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
9088 char *ret = REAL(MD2File)(filename, buf);
9089 if (ret)
9090 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length);
9091 return ret;
9092}
9093
9094INTERCEPTOR(char *, MD2Data, const unsigned char *data, unsigned int len,
9095 char *buf) {
9096 void *ctx;
9097 COMMON_INTERCEPTOR_ENTER(ctx, MD2Data, data, len, buf);
9098 if (data && len > 0)
9099 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
9100 char *ret = REAL(MD2Data)(data, len, buf);
9101 if (ret)
9102 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length);
9103 return ret;
9104}
9105
9106#define INIT_MD2 \
9107 COMMON_INTERCEPT_FUNCTION(MD2Init); \
9108 COMMON_INTERCEPT_FUNCTION(MD2Update); \
9109 COMMON_INTERCEPT_FUNCTION(MD2Final); \
9110 COMMON_INTERCEPT_FUNCTION(MD2End); \
9111 COMMON_INTERCEPT_FUNCTION(MD2File); \
9112 COMMON_INTERCEPT_FUNCTION(MD2Data)
9113#else
9114#define INIT_MD2
9115#endif
9116
9117#if SANITIZER_INTERCEPT_VIS
9118INTERCEPTOR(char *, vis, char *dst, int c, int flag, int nextc) {
9119 void *ctx;
9120 COMMON_INTERCEPTOR_ENTER(ctx, vis, dst, c, flag, nextc);
9121 char *end = REAL(vis)(dst, c, flag, nextc);
9122 // dst is NULL terminated and end points to the NULL char
9123 if (dst && end)
9124 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1);
9125 return end;
9126}
9127INTERCEPTOR(char *, nvis, char *dst, SIZE_T dlen, int c, int flag, int nextc) {
9128 void *ctx;
9129 COMMON_INTERCEPTOR_ENTER(ctx, nvis, dst, dlen, c, flag, nextc);
9130 char *end = REAL(nvis)(dst, dlen, c, flag, nextc);
9131 // nvis cannot make sure the dst is NULL terminated
9132 if (dst && end)
9133 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1);
9134 return end;
9135}
9136INTERCEPTOR(int, strvis, char *dst, const char *src, int flag) {
9137 void *ctx;
9138 COMMON_INTERCEPTOR_ENTER(ctx, strvis, dst, src, flag);
9139 if (src)
9140 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9141 int len = REAL(strvis)(dst, src, flag);
9142 if (dst)
9143 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1);
9144 return len;
9145}
9146INTERCEPTOR(int, stravis, char **dst, const char *src, int flag) {
9147 void *ctx;
9148 COMMON_INTERCEPTOR_ENTER(ctx, stravis, dst, src, flag);
9149 if (src)
9150 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9151 int len = REAL(stravis)(dst, src, flag);
9152 if (dst) {
9153 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(char *));
9154 if (*dst)
9155 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *dst, len + 1);
9156 }
9157 return len;
9158}
9159INTERCEPTOR(int, strnvis, char *dst, SIZE_T dlen, const char *src, int flag) {
9160 void *ctx;
9161 COMMON_INTERCEPTOR_ENTER(ctx, strnvis, dst, dlen, src, flag);
9162 if (src)
9163 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9164 int len = REAL(strnvis)(dst, dlen, src, flag);
9165 // The interface will be valid even if there is no space for NULL char
9166 if (dst && len > 0)
9167 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1);
9168 return len;
9169}
9170INTERCEPTOR(int, strvisx, char *dst, const char *src, SIZE_T len, int flag) {
9171 void *ctx;
9172 COMMON_INTERCEPTOR_ENTER(ctx, strvisx, dst, src, len, flag);
9173 if (src)
9174 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9175 int ret = REAL(strvisx)(dst, src, len, flag);
9176 if (dst)
9177 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9178 return ret;
9179}
9180INTERCEPTOR(int, strnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len,
9181 int flag) {
9182 void *ctx;
9183 COMMON_INTERCEPTOR_ENTER(ctx, strnvisx, dst, dlen, src, len, flag);
9184 if (src)
9185 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9186 int ret = REAL(strnvisx)(dst, dlen, src, len, flag);
9187 if (dst && ret >= 0)
9188 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9189 return ret;
9190}
9191INTERCEPTOR(int, strenvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len,
9192 int flag, int *cerr_ptr) {
9193 void *ctx;
9194 COMMON_INTERCEPTOR_ENTER(ctx, strenvisx, dst, dlen, src, len, flag, cerr_ptr);
9195 if (src)
9196 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9197 // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold
9198 // according to the implementation
9199 if (cerr_ptr)
9200 COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int));
9201 int ret = REAL(strenvisx)(dst, dlen, src, len, flag, cerr_ptr);
9202 if (dst && ret >= 0)
9203 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9204 if (cerr_ptr)
9205 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int));
9206 return ret;
9207}
9208INTERCEPTOR(char *, svis, char *dst, int c, int flag, int nextc,
9209 const char *extra) {
9210 void *ctx;
9211 COMMON_INTERCEPTOR_ENTER(ctx, svis, dst, c, flag, nextc, extra);
9212 if (extra)
9213 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9214 char *end = REAL(svis)(dst, c, flag, nextc, extra);
9215 if (dst && end)
9216 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1);
9217 return end;
9218}
9219INTERCEPTOR(char *, snvis, char *dst, SIZE_T dlen, int c, int flag, int nextc,
9220 const char *extra) {
9221 void *ctx;
9222 COMMON_INTERCEPTOR_ENTER(ctx, snvis, dst, dlen, c, flag, nextc, extra);
9223 if (extra)
9224 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9225 char *end = REAL(snvis)(dst, dlen, c, flag, nextc, extra);
9226 if (dst && end)
9227 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst,
9228 Min((SIZE_T)(end - dst + 1), dlen));
9229 return end;
9230}
9231INTERCEPTOR(int, strsvis, char *dst, const char *src, int flag,
9232 const char *extra) {
9233 void *ctx;
9234 COMMON_INTERCEPTOR_ENTER(ctx, strsvis, dst, src, flag, extra);
9235 if (src)
9236 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9237 if (extra)
9238 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9239 int len = REAL(strsvis)(dst, src, flag, extra);
9240 if (dst)
9241 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1);
9242 return len;
9243}
9244INTERCEPTOR(int, strsnvis, char *dst, SIZE_T dlen, const char *src, int flag,
9245 const char *extra) {
9246 void *ctx;
9247 COMMON_INTERCEPTOR_ENTER(ctx, strsnvis, dst, dlen, src, flag, extra);
9248 if (src)
9249 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9250 if (extra)
9251 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9252 int len = REAL(strsnvis)(dst, dlen, src, flag, extra);
9253 // The interface will be valid even if there is no space for NULL char
9254 if (dst && len >= 0)
9255 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1);
9256 return len;
9257}
9258INTERCEPTOR(int, strsvisx, char *dst, const char *src, SIZE_T len, int flag,
9259 const char *extra) {
9260 void *ctx;
9261 COMMON_INTERCEPTOR_ENTER(ctx, strsvisx, dst, src, len, flag, extra);
9262 if (src)
9263 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9264 if (extra)
9265 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9266 int ret = REAL(strsvisx)(dst, src, len, flag, extra);
9267 if (dst)
9268 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9269 return ret;
9270}
9271INTERCEPTOR(int, strsnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len,
9272 int flag, const char *extra) {
9273 void *ctx;
9274 COMMON_INTERCEPTOR_ENTER(ctx, strsnvisx, dst, dlen, src, len, flag, extra);
9275 if (src)
9276 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9277 if (extra)
9278 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9279 int ret = REAL(strsnvisx)(dst, dlen, src, len, flag, extra);
9280 if (dst && ret >= 0)
9281 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9282 return ret;
9283}
9284INTERCEPTOR(int, strsenvisx, char *dst, SIZE_T dlen, const char *src,
9285 SIZE_T len, int flag, const char *extra, int *cerr_ptr) {
9286 void *ctx;
9287 COMMON_INTERCEPTOR_ENTER(ctx, strsenvisx, dst, dlen, src, len, flag, extra,
9288 cerr_ptr);
9289 if (src)
9290 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9291 if (extra)
9292 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9293 // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold
9294 // according to the implementation
9295 if (cerr_ptr)
9296 COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int));
9297 int ret = REAL(strsenvisx)(dst, dlen, src, len, flag, extra, cerr_ptr);
9298 if (dst && ret >= 0)
9299 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9300 if (cerr_ptr)
9301 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int));
9302 return ret;
9303}
9304INTERCEPTOR(int, unvis, char *cp, int c, int *astate, int flag) {
9305 void *ctx;
9306 COMMON_INTERCEPTOR_ENTER(ctx, unvis, cp, c, astate, flag);
9307 if (astate)
9308 COMMON_INTERCEPTOR_READ_RANGE(ctx, astate, sizeof(*astate));
9309 int ret = REAL(unvis)(cp, c, astate, flag);
9310 if (ret == unvis_valid || ret == unvis_validpush) {
9311 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cp, sizeof(*cp));
9312 }
9313 return ret;
9314}
9315INTERCEPTOR(int, strunvis, char *dst, const char *src) {
9316 void *ctx;
9317 COMMON_INTERCEPTOR_ENTER(ctx, strunvis, dst, src);
9318 if (src)
9319 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9320 int ret = REAL(strunvis)(dst, src);
9321 if (ret != -1)
9322 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9323 return ret;
9324}
9325INTERCEPTOR(int, strnunvis, char *dst, SIZE_T dlen, const char *src) {
9326 void *ctx;
9327 COMMON_INTERCEPTOR_ENTER(ctx, strnunvis, dst, dlen, src);
9328 if (src)
9329 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9330 int ret = REAL(strnunvis)(dst, dlen, src);
9331 if (ret != -1)
9332 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9333 return ret;
9334}
9335INTERCEPTOR(int, strunvisx, char *dst, const char *src, int flag) {
9336 void *ctx;
9337 COMMON_INTERCEPTOR_ENTER(ctx, strunvisx, dst, src, flag);
9338 if (src)
9339 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9340 int ret = REAL(strunvisx)(dst, src, flag);
9341 if (ret != -1)
9342 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9343 return ret;
9344}
9345INTERCEPTOR(int, strnunvisx, char *dst, SIZE_T dlen, const char *src,
9346 int flag) {
9347 void *ctx;
9348 COMMON_INTERCEPTOR_ENTER(ctx, strnunvisx, dst, dlen, src, flag);
9349 if (src)
9350 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9351 int ret = REAL(strnunvisx)(dst, dlen, src, flag);
9352 if (ret != -1)
9353 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9354 return ret;
9355}
9356#define INIT_VIS \
9357 COMMON_INTERCEPT_FUNCTION(vis); \
9358 COMMON_INTERCEPT_FUNCTION(nvis); \
9359 COMMON_INTERCEPT_FUNCTION(strvis); \
9360 COMMON_INTERCEPT_FUNCTION(stravis); \
9361 COMMON_INTERCEPT_FUNCTION(strnvis); \
9362 COMMON_INTERCEPT_FUNCTION(strvisx); \
9363 COMMON_INTERCEPT_FUNCTION(strnvisx); \
9364 COMMON_INTERCEPT_FUNCTION(strenvisx); \
9365 COMMON_INTERCEPT_FUNCTION(svis); \
9366 COMMON_INTERCEPT_FUNCTION(snvis); \
9367 COMMON_INTERCEPT_FUNCTION(strsvis); \
9368 COMMON_INTERCEPT_FUNCTION(strsnvis); \
9369 COMMON_INTERCEPT_FUNCTION(strsvisx); \
9370 COMMON_INTERCEPT_FUNCTION(strsnvisx); \
9371 COMMON_INTERCEPT_FUNCTION(strsenvisx); \
9372 COMMON_INTERCEPT_FUNCTION(unvis); \
9373 COMMON_INTERCEPT_FUNCTION(strunvis); \
9374 COMMON_INTERCEPT_FUNCTION(strnunvis); \
9375 COMMON_INTERCEPT_FUNCTION(strunvisx); \
9376 COMMON_INTERCEPT_FUNCTION(strnunvisx)
9377#else
9378#define INIT_VIS
9379#endif
9380
9381#if SANITIZER_INTERCEPT_CDB
9382INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open, const char *path, int flags) {
9383 void *ctx;
9384 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open, path, flags);
9385 if (path)
9386 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
9387 struct __sanitizer_cdbr *cdbr = REAL(cdbr_open)(path, flags);
9388 if (cdbr)
9389 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr));
9390 return cdbr;
9391}
9392
9393INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open_mem, void *base, SIZE_T size,
9394 int flags, void (*unmap)(void *, void *, SIZE_T), void *cookie) {
9395 void *ctx;
9396 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open_mem, base, size, flags, unmap,
9397 cookie);
9398 if (base && size)
9399 COMMON_INTERCEPTOR_READ_RANGE(ctx, base, size);
9400 struct __sanitizer_cdbr *cdbr =
9401 REAL(cdbr_open_mem)(base, size, flags, unmap, cookie);
9402 if (cdbr)
9403 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr));
9404 return cdbr;
9405}
9406
9407INTERCEPTOR(u32, cdbr_entries, struct __sanitizer_cdbr *cdbr) {
9408 void *ctx;
9409 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_entries, cdbr);
9410 if (cdbr)
9411 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr));
9412 return REAL(cdbr_entries)(cdbr);
9413}
9414
9415INTERCEPTOR(int, cdbr_get, struct __sanitizer_cdbr *cdbr, u32 index,
9416 const void **data, SIZE_T *datalen) {
9417 void *ctx;
9418 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_get, cdbr, index, data, datalen);
9419 if (cdbr)
9420 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr));
9421 int ret = REAL(cdbr_get)(cdbr, index, data, datalen);
9422 if (!ret) {
9423 if (data)
9424 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data));
9425 if (datalen)
9426 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen));
9427 if (data && datalen)
9428 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen);
9429 }
9430 return ret;
9431}
9432
9433INTERCEPTOR(int, cdbr_find, struct __sanitizer_cdbr *cdbr, const void *key,
9434 SIZE_T keylen, const void **data, SIZE_T *datalen) {
9435 void *ctx;
9436 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_find, cdbr, key, keylen, data, datalen);
9437 if (cdbr)
9438 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr));
9439 if (key)
9440 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen);
9441 int ret = REAL(cdbr_find)(cdbr, key, keylen, data, datalen);
9442 if (!ret) {
9443 if (data)
9444 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data));
9445 if (datalen)
9446 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen));
9447 if (data && datalen)
9448 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen);
9449 }
9450 return ret;
9451}
9452
9453INTERCEPTOR(void, cdbr_close, struct __sanitizer_cdbr *cdbr) {
9454 void *ctx;
9455 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_close, cdbr);
9456 if (cdbr)
9457 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr));
9458 REAL(cdbr_close)(cdbr);
9459}
9460
9461INTERCEPTOR(struct __sanitizer_cdbw *, cdbw_open) {
9462 void *ctx;
9463 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_open);
9464 struct __sanitizer_cdbw *ret = REAL(cdbw_open)();
9465 if (ret)
9466 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret));
9467 return ret;
9468}
9469
9470INTERCEPTOR(int, cdbw_put, struct __sanitizer_cdbw *cdbw, const void *key,
9471 SIZE_T keylen, const void *data, SIZE_T datalen) {
9472 void *ctx;
9473 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put, cdbw, key, keylen, data, datalen);
9474 if (cdbw)
9475 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9476 if (data && datalen)
9477 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen);
9478 if (key && keylen)
9479 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen);
9480 int ret = REAL(cdbw_put)(cdbw, key, keylen, data, datalen);
9481 if (!ret && cdbw)
9482 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw));
9483 return ret;
9484}
9485
9486INTERCEPTOR(int, cdbw_put_data, struct __sanitizer_cdbw *cdbw, const void *data,
9487 SIZE_T datalen, u32 *index) {
9488 void *ctx;
9489 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_data, cdbw, data, datalen, index);
9490 if (cdbw)
9491 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9492 if (data && datalen)
9493 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen);
9494 int ret = REAL(cdbw_put_data)(cdbw, data, datalen, index);
9495 if (!ret) {
9496 if (index)
9497 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, index, sizeof(*index));
9498 if (cdbw)
9499 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw));
9500 }
9501 return ret;
9502}
9503
9504INTERCEPTOR(int, cdbw_put_key, struct __sanitizer_cdbw *cdbw, const void *key,
9505 SIZE_T keylen, u32 index) {
9506 void *ctx;
9507 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_key, cdbw, key, keylen, index);
9508 if (cdbw)
9509 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9510 if (key && keylen)
9511 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen);
9512 int ret = REAL(cdbw_put_key)(cdbw, key, keylen, index);
9513 if (!ret && cdbw)
9514 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw));
9515 return ret;
9516}
9517
9518INTERCEPTOR(int, cdbw_output, struct __sanitizer_cdbw *cdbw, int output,
9519 const char descr[16], u32 (*seedgen)(void)) {
9520 void *ctx;
9521 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_output, cdbw, output, descr, seedgen);
9522 COMMON_INTERCEPTOR_FD_ACCESS(ctx, output);
9523 if (cdbw)
9524 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9525 if (descr)
9526 COMMON_INTERCEPTOR_READ_RANGE(ctx, descr, internal_strnlen(descr, 16));
9527 if (seedgen)
9528 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)seedgen, sizeof(seedgen));
9529 int ret = REAL(cdbw_output)(cdbw, output, descr, seedgen);
9530 if (!ret) {
9531 if (cdbw)
9532 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw));
9533 if (output >= 0)
9534 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, output);
9535 }
9536 return ret;
9537}
9538
9539INTERCEPTOR(void, cdbw_close, struct __sanitizer_cdbw *cdbw) {
9540 void *ctx;
9541 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_close, cdbw);
9542 if (cdbw)
9543 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9544 REAL(cdbw_close)(cdbw);
9545}
9546
9547#define INIT_CDB \
9548 COMMON_INTERCEPT_FUNCTION(cdbr_open); \
9549 COMMON_INTERCEPT_FUNCTION(cdbr_open_mem); \
9550 COMMON_INTERCEPT_FUNCTION(cdbr_entries); \
9551 COMMON_INTERCEPT_FUNCTION(cdbr_get); \
9552 COMMON_INTERCEPT_FUNCTION(cdbr_find); \
9553 COMMON_INTERCEPT_FUNCTION(cdbr_close); \
9554 COMMON_INTERCEPT_FUNCTION(cdbw_open); \
9555 COMMON_INTERCEPT_FUNCTION(cdbw_put); \
9556 COMMON_INTERCEPT_FUNCTION(cdbw_put_data); \
9557 COMMON_INTERCEPT_FUNCTION(cdbw_put_key); \
9558 COMMON_INTERCEPT_FUNCTION(cdbw_output); \
9559 COMMON_INTERCEPT_FUNCTION(cdbw_close)
9560#else
9561#define INIT_CDB
9562#endif
9563
9564#if SANITIZER_INTERCEPT_GETFSENT
9565INTERCEPTOR(void *, getfsent) {
9566 void *ctx;
9567 COMMON_INTERCEPTOR_ENTER(ctx, getfsent);
9568 void *ret = REAL(getfsent)();
9569 if (ret)
9570 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz);
9571 return ret;
9572}
9573
9574INTERCEPTOR(void *, getfsspec, const char *spec) {
9575 void *ctx;
9576 COMMON_INTERCEPTOR_ENTER(ctx, getfsspec, spec);
9577 if (spec)
9578 COMMON_INTERCEPTOR_READ_RANGE(ctx, spec, internal_strlen(spec) + 1);
9579 void *ret = REAL(getfsspec)(spec);
9580 if (ret)
9581 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz);
9582 return ret;
9583}
9584
9585INTERCEPTOR(void *, getfsfile, const char *file) {
9586 void *ctx;
9587 COMMON_INTERCEPTOR_ENTER(ctx, getfsfile, file);
9588 if (file)
9589 COMMON_INTERCEPTOR_READ_RANGE(ctx, file, internal_strlen(file) + 1);
9590 void *ret = REAL(getfsfile)(file);
9591 if (ret)
9592 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz);
9593 return ret;
9594}
9595
9596#define INIT_GETFSENT \
9597 COMMON_INTERCEPT_FUNCTION(getfsent); \
9598 COMMON_INTERCEPT_FUNCTION(getfsspec); \
9599 COMMON_INTERCEPT_FUNCTION(getfsfile);
9600#else
9601#define INIT_GETFSENT
9602#endif
9603
9604#if SANITIZER_INTERCEPT_ARC4RANDOM
9605INTERCEPTOR(void, arc4random_buf, void *buf, SIZE_T len) {
9606 void *ctx;
9607 COMMON_INTERCEPTOR_ENTER(ctx, arc4random_buf, buf, len);
9608 REAL(arc4random_buf)(buf, len);
9609 if (buf && len)
9610 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, len);
9611}
9612
9613INTERCEPTOR(void, arc4random_addrandom, u8 *dat, int datlen) {
9614 void *ctx;
9615 COMMON_INTERCEPTOR_ENTER(ctx, arc4random_addrandom, dat, datlen);
9616 if (dat && datlen)
9617 COMMON_INTERCEPTOR_READ_RANGE(ctx, dat, datlen);
9618 REAL(arc4random_addrandom)(dat, datlen);
9619}
9620
9621#define INIT_ARC4RANDOM \
9622 COMMON_INTERCEPT_FUNCTION(arc4random_buf); \
9623 COMMON_INTERCEPT_FUNCTION(arc4random_addrandom);
9624#else
9625#define INIT_ARC4RANDOM
9626#endif
9627
9628#if SANITIZER_INTERCEPT_POPEN
9629INTERCEPTOR(__sanitizer_FILE *, popen, const char *command, const char *type) {
9630 void *ctx;
9631 COMMON_INTERCEPTOR_ENTER(ctx, popen, command, type);
9632 if (command)
9633 COMMON_INTERCEPTOR_READ_RANGE(ctx, command, internal_strlen(command) + 1);
9634 if (type)
9635 COMMON_INTERCEPTOR_READ_RANGE(ctx, type, internal_strlen(type) + 1);
9636 __sanitizer_FILE *res = REAL(popen)(command, type);
9637 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr);
9638 if (res) unpoison_file(res);
9639 return res;
9640}
9641#define INIT_POPEN COMMON_INTERCEPT_FUNCTION(popen)
9642#else
9643#define INIT_POPEN
9644#endif
9645
9646#if SANITIZER_INTERCEPT_POPENVE
9647INTERCEPTOR(__sanitizer_FILE *, popenve, const char *path,
9648 char *const *argv, char *const *envp, const char *type) {
9649 void *ctx;
9650 COMMON_INTERCEPTOR_ENTER(ctx, popenve, path, argv, envp, type);
9651 if (path)
9652 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
9653 if (argv) {
9654 for (char *const *pa = argv; ; ++pa) {
9655 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **));
9656 if (!*pa)
9657 break;
9658 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1);
9659 }
9660 }
9661 if (envp) {
9662 for (char *const *pa = envp; ; ++pa) {
9663 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **));
9664 if (!*pa)
9665 break;
9666 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1);
9667 }
9668 }
9669 if (type)
9670 COMMON_INTERCEPTOR_READ_RANGE(ctx, type, internal_strlen(type) + 1);
9671 __sanitizer_FILE *res = REAL(popenve)(path, argv, envp, type);
9672 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr);
9673 if (res) unpoison_file(res);
9674 return res;
9675}
9676#define INIT_POPENVE COMMON_INTERCEPT_FUNCTION(popenve)
9677#else
9678#define INIT_POPENVE
9679#endif
9680
9681#if SANITIZER_INTERCEPT_PCLOSE
9682INTERCEPTOR(int, pclose, __sanitizer_FILE *fp) {
9683 void *ctx;
9684 COMMON_INTERCEPTOR_ENTER(ctx, pclose, fp);
9685 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
9686 const FileMetadata *m = GetInterceptorMetadata(fp);
9687 int res = REAL(pclose)(fp);
9688 if (m) {
9689 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
9690 DeleteInterceptorMetadata(fp);
9691 }
9692 return res;
9693}
9694#define INIT_PCLOSE COMMON_INTERCEPT_FUNCTION(pclose);
9695#else
9696#define INIT_PCLOSE
9697#endif
9698
9699#if SANITIZER_INTERCEPT_FUNOPEN
9700typedef int (*funopen_readfn)(void *cookie, char *buf, int len);
9701typedef int (*funopen_writefn)(void *cookie, const char *buf, int len);
9702typedef OFF_T (*funopen_seekfn)(void *cookie, OFF_T offset, int whence);
9703typedef int (*funopen_closefn)(void *cookie);
9704
9705struct WrappedFunopenCookie {
9706 void *real_cookie;
9707 funopen_readfn real_read;
9708 funopen_writefn real_write;
9709 funopen_seekfn real_seek;
9710 funopen_closefn real_close;
9711};
9712
9713static int wrapped_funopen_read(void *cookie, char *buf, int len) {
9714 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9715 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie;
9716 funopen_readfn real_read = wrapped_cookie->real_read;
9717 return real_read(wrapped_cookie->real_cookie, buf, len);
9718}
9719
9720static int wrapped_funopen_write(void *cookie, const char *buf, int len) {
9721 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9722 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie;
9723 funopen_writefn real_write = wrapped_cookie->real_write;
9724 return real_write(wrapped_cookie->real_cookie, buf, len);
9725}
9726
9727static OFF_T wrapped_funopen_seek(void *cookie, OFF_T offset, int whence) {
9728 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9729 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie;
9730 funopen_seekfn real_seek = wrapped_cookie->real_seek;
9731 return real_seek(wrapped_cookie->real_cookie, offset, whence);
9732}
9733
9734static int wrapped_funopen_close(void *cookie) {
9735 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
9736 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie;
9737 funopen_closefn real_close = wrapped_cookie->real_close;
9738 int res = real_close(wrapped_cookie->real_cookie);
9739 InternalFree(wrapped_cookie);
9740 return res;
9741}
9742
9743INTERCEPTOR(__sanitizer_FILE *, funopen, void *cookie, funopen_readfn readfn,
9744 funopen_writefn writefn, funopen_seekfn seekfn,
9745 funopen_closefn closefn) {
9746 void *ctx;
9747 COMMON_INTERCEPTOR_ENTER(ctx, funopen, cookie, readfn, writefn, seekfn,
9748 closefn);
9749
9750 WrappedFunopenCookie *wrapped_cookie =
9751 (WrappedFunopenCookie *)InternalAlloc(sizeof(WrappedFunopenCookie));
9752 wrapped_cookie->real_cookie = cookie;
9753 wrapped_cookie->real_read = readfn;
9754 wrapped_cookie->real_write = writefn;
9755 wrapped_cookie->real_seek = seekfn;
9756 wrapped_cookie->real_close = closefn;
9757
9758 __sanitizer_FILE *res =
9759 REAL(funopen)(wrapped_cookie,
9760 readfn ? wrapped_funopen_read : nullptr,
9761 writefn ? wrapped_funopen_write : nullptr,
9762 seekfn ? wrapped_funopen_seek : nullptr,
9763 closefn ? wrapped_funopen_close : nullptr);
9764 if (res)
9765 unpoison_file(res);
9766 return res;
9767}
9768#define INIT_FUNOPEN COMMON_INTERCEPT_FUNCTION(funopen)
9769#else
9770#define INIT_FUNOPEN
9771#endif
9772
9773#if SANITIZER_INTERCEPT_FUNOPEN2
9774typedef SSIZE_T (*funopen2_readfn)(void *cookie, void *buf, SIZE_T len);
9775typedef SSIZE_T (*funopen2_writefn)(void *cookie, const void *buf, SIZE_T len);
9776typedef OFF_T (*funopen2_seekfn)(void *cookie, OFF_T offset, int whence);
9777typedef int (*funopen2_flushfn)(void *cookie);
9778typedef int (*funopen2_closefn)(void *cookie);
9779
9780struct WrappedFunopen2Cookie {
9781 void *real_cookie;
9782 funopen2_readfn real_read;
9783 funopen2_writefn real_write;
9784 funopen2_seekfn real_seek;
9785 funopen2_flushfn real_flush;
9786 funopen2_closefn real_close;
9787};
9788
9789static SSIZE_T wrapped_funopen2_read(void *cookie, void *buf, SIZE_T len) {
9790 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9791 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9792 funopen2_readfn real_read = wrapped_cookie->real_read;
9793 return real_read(wrapped_cookie->real_cookie, buf, len);
9794}
9795
9796static SSIZE_T wrapped_funopen2_write(void *cookie, const void *buf,
9797 SIZE_T len) {
9798 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9799 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9800 funopen2_writefn real_write = wrapped_cookie->real_write;
9801 return real_write(wrapped_cookie->real_cookie, buf, len);
9802}
9803
9804static OFF_T wrapped_funopen2_seek(void *cookie, OFF_T offset, int whence) {
9805 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9806 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9807 funopen2_seekfn real_seek = wrapped_cookie->real_seek;
9808 return real_seek(wrapped_cookie->real_cookie, offset, whence);
9809}
9810
9811static int wrapped_funopen2_flush(void *cookie) {
9812 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
9813 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9814 funopen2_flushfn real_flush = wrapped_cookie->real_flush;
9815 return real_flush(wrapped_cookie->real_cookie);
9816}
9817
9818static int wrapped_funopen2_close(void *cookie) {
9819 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
9820 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9821 funopen2_closefn real_close = wrapped_cookie->real_close;
9822 int res = real_close(wrapped_cookie->real_cookie);
9823 InternalFree(wrapped_cookie);
9824 return res;
9825}
9826
9827INTERCEPTOR(__sanitizer_FILE *, funopen2, void *cookie, funopen2_readfn readfn,
9828 funopen2_writefn writefn, funopen2_seekfn seekfn,
9829 funopen2_flushfn flushfn, funopen2_closefn closefn) {
9830 void *ctx;
9831 COMMON_INTERCEPTOR_ENTER(ctx, funopen2, cookie, readfn, writefn, seekfn,
9832 flushfn, closefn);
9833
9834 WrappedFunopen2Cookie *wrapped_cookie =
9835 (WrappedFunopen2Cookie *)InternalAlloc(sizeof(WrappedFunopen2Cookie));
9836 wrapped_cookie->real_cookie = cookie;
9837 wrapped_cookie->real_read = readfn;
9838 wrapped_cookie->real_write = writefn;
9839 wrapped_cookie->real_seek = seekfn;
9840 wrapped_cookie->real_flush = flushfn;
9841 wrapped_cookie->real_close = closefn;
9842
9843 __sanitizer_FILE *res =
9844 REAL(funopen2)(wrapped_cookie,
9845 readfn ? wrapped_funopen2_read : nullptr,
9846 writefn ? wrapped_funopen2_write : nullptr,
9847 seekfn ? wrapped_funopen2_seek : nullptr,
9848 flushfn ? wrapped_funopen2_flush : nullptr,
9849 closefn ? wrapped_funopen2_close : nullptr);
9850 if (res)
9851 unpoison_file(res);
9852 return res;
9853}
9854#define INIT_FUNOPEN2 COMMON_INTERCEPT_FUNCTION(funopen2)
9855#else
9856#define INIT_FUNOPEN2
9857#endif
9858
9859#if SANITIZER_INTERCEPT_FDEVNAME
9860INTERCEPTOR(char *, fdevname, int fd) {
9861 void *ctx;
9862 COMMON_INTERCEPTOR_ENTER(ctx, fdevname, fd);
9863 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
9864 char *name = REAL(fdevname)(fd);
9865 if (name) {
9866 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
9867 if (fd > 0)
9868 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
9869 }
9870 return name;
9871}
9872
9873INTERCEPTOR(char *, fdevname_r, int fd, char *buf, SIZE_T len) {
9874 void *ctx;
9875 COMMON_INTERCEPTOR_ENTER(ctx, fdevname_r, fd, buf, len);
9876 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
9877 char *name = REAL(fdevname_r)(fd, buf, len);
9878 if (name && buf && len > 0) {
9879 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1);
9880 if (fd > 0)
9881 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
9882 }
9883 return name;
9884}
9885
9886#define INIT_FDEVNAME \
9887 COMMON_INTERCEPT_FUNCTION(fdevname); \
9888 COMMON_INTERCEPT_FUNCTION(fdevname_r);
9889#else
9890#define INIT_FDEVNAME
9891#endif
9892
9893#if SANITIZER_INTERCEPT_GETUSERSHELL
9894INTERCEPTOR(char *, getusershell,) {
9895 void *ctx;
9896 COMMON_INTERCEPTOR_ENTER(ctx, getusershell,);
9897 char *res = REAL(getusershell)();
9898 if (res)
9899 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
9900 return res;
9901}
9902
9903#define INIT_GETUSERSHELL COMMON_INTERCEPT_FUNCTION(getusershell);
9904#else
9905#define INIT_GETUSERSHELL
9906#endif
9907
9908#if SANITIZER_INTERCEPT_SL_INIT
9909INTERCEPTOR(void *, sl_init) {
9910 void *ctx;
9911 COMMON_INTERCEPTOR_ENTER(ctx, sl_init);
9912 void *res = REAL(sl_init)();
9913 if (res)
9914 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_StringList_sz);
9915 return res;
9916}
9917
9918INTERCEPTOR(int, sl_add, void *sl, char *item) {
9919 void *ctx;
9920 COMMON_INTERCEPTOR_ENTER(ctx, sl_add, sl, item);
9921 if (sl)
9922 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz);
9923 if (item)
9924 COMMON_INTERCEPTOR_READ_RANGE(ctx, item, internal_strlen(item) + 1);
9925 int res = REAL(sl_add)(sl, item);
9926 if (!res)
9927 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sl, __sanitizer::struct_StringList_sz);
9928 return res;
9929}
9930
9931INTERCEPTOR(char *, sl_find, void *sl, const char *item) {
9932 void *ctx;
9933 COMMON_INTERCEPTOR_ENTER(ctx, sl_find, sl, item);
9934 if (sl)
9935 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz);
9936 if (item)
9937 COMMON_INTERCEPTOR_READ_RANGE(ctx, item, internal_strlen(item) + 1);
9938 char *res = REAL(sl_find)(sl, item);
9939 if (res)
9940 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
9941 return res;
9942}
9943
9944INTERCEPTOR(void, sl_free, void *sl, int freeall) {
9945 void *ctx;
9946 COMMON_INTERCEPTOR_ENTER(ctx, sl_free, sl, freeall);
9947 if (sl)
9948 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz);
9949 REAL(sl_free)(sl, freeall);
9950}
9951
9952#define INIT_SL_INIT \
9953 COMMON_INTERCEPT_FUNCTION(sl_init); \
9954 COMMON_INTERCEPT_FUNCTION(sl_add); \
9955 COMMON_INTERCEPT_FUNCTION(sl_find); \
9956 COMMON_INTERCEPT_FUNCTION(sl_free);
9957#else
9958#define INIT_SL_INIT
9959#endif
9960
9961#if SANITIZER_INTERCEPT_GETRANDOM
9962INTERCEPTOR(SSIZE_T, getrandom, void *buf, SIZE_T buflen, unsigned int flags) {
9963 void *ctx;
9964 COMMON_INTERCEPTOR_ENTER(ctx, getrandom, buf, buflen, flags);
9965 // If GRND_NONBLOCK is set in the flags, it is non blocking.
9966 static const int grnd_nonblock = 1;
9967 SSIZE_T n;
9968 if ((flags & grnd_nonblock))
9969 n = REAL(getrandom)(buf, buflen, flags);
9970 else
9971 n = COMMON_INTERCEPTOR_BLOCK_REAL(getrandom)(buf, buflen, flags);
9972 if (n > 0) {
9973 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, n);
9974 }
9975 return n;
9976}
9977#define INIT_GETRANDOM COMMON_INTERCEPT_FUNCTION(getrandom)
9978#else
9979#define INIT_GETRANDOM
9980#endif
9981
9982#if SANITIZER_INTERCEPT_GETENTROPY
9983INTERCEPTOR(int, getentropy, void *buf, SIZE_T buflen) {
9984 void *ctx;
9985 COMMON_INTERCEPTOR_ENTER(ctx, getentropy, buf, buflen);
9986 int r = REAL(getentropy)(buf, buflen);
9987 if (r == 0) {
9988 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
9989 }
9990 return r;
9991}
9992#define INIT_GETENTROPY COMMON_INTERCEPT_FUNCTION(getentropy)
9993#else
9994#define INIT_GETENTROPY
9995#endif
9996
9997#if SANITIZER_INTERCEPT_QSORT_R
9998typedef int (*qsort_r_compar_f)(const void *, const void *, void *);
9999struct qsort_r_compar_params {
10000 SIZE_T size;
10001 qsort_r_compar_f compar;
10002 void *arg;
10003};
10004static int wrapped_qsort_r_compar(const void *a, const void *b, void *arg) {
10005 qsort_r_compar_params *params = (qsort_r_compar_params *)arg;
10006 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
10007 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, params->size);
10008 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, params->size);
10009 return params->compar(a, b, params->arg);
10010}
10011
10012INTERCEPTOR(void, qsort_r, void *base, SIZE_T nmemb, SIZE_T size,
10013 qsort_r_compar_f compar, void *arg) {
10014 void *ctx;
10015 COMMON_INTERCEPTOR_ENTER(ctx, qsort_r, base, nmemb, size, compar, arg);
10016 // Run the comparator over all array elements to detect any memory issues.
10017 if (nmemb > 1) {
10018 for (SIZE_T i = 0; i < nmemb - 1; ++i) {
10019 void *p = (void *)((char *)base + i * size);
10020 void *q = (void *)((char *)base + (i + 1) * size);
10021 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
10022 compar(p, q, arg);
10023 }
10024 }
10025 qsort_r_compar_params params = {size, compar, arg};
10026 REAL(qsort_r)(base, nmemb, size, wrapped_qsort_r_compar, ¶ms);
10027 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, base, nmemb * size);
10028}
10029# define INIT_QSORT_R COMMON_INTERCEPT_FUNCTION(qsort_r)
10030#else
10031# define INIT_QSORT_R
10032#endif
10033
10034#if SANITIZER_INTERCEPT_QSORT && SANITIZER_INTERCEPT_QSORT_R
10035INTERCEPTOR(void, qsort, void *base, SIZE_T nmemb, SIZE_T size,
10036 qsort_r_compar_f compar) {
10037 void *ctx;
10038 COMMON_INTERCEPTOR_ENTER(ctx, qsort, base, nmemb, size, compar);
10039 WRAP(qsort_r)(base, nmemb, size, compar, nullptr);
10040}
10041# define INIT_QSORT COMMON_INTERCEPT_FUNCTION(qsort)
10042#elif SANITIZER_INTERCEPT_QSORT && !SANITIZER_INTERCEPT_QSORT_R
10043// Glibc qsort uses a temporary buffer allocated either on stack or on heap.
10044// Poisoned memory from there may get copied into the comparator arguments,
10045// where it needs to be dealt with. But even that is not enough - the results of
10046// the sort may be copied into the input/output array based on the results of
10047// the comparator calls, but directly from the temp memory, bypassing the
10048// unpoisoning done in wrapped_qsort_compar. We deal with this by, again,
10049// unpoisoning the entire array after the sort is done.
10050//
10051// We can not check that the entire array is initialized at the beginning. IMHO,
10052// it's fine for parts of the sorted objects to contain uninitialized memory,
10053// ex. as padding in structs.
10054typedef int (*qsort_compar_f)(const void *, const void *);
10055static THREADLOCAL qsort_compar_f qsort_compar;
10056static THREADLOCAL SIZE_T qsort_size;
10057static int wrapped_qsort_compar(const void *a, const void *b) {
10058 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
10059 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, qsort_size);
10060 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, qsort_size);
10061 return qsort_compar(a, b);
10062}
10063
10064INTERCEPTOR(void, qsort, void *base, SIZE_T nmemb, SIZE_T size,
10065 qsort_compar_f compar) {
10066 void *ctx;
10067 COMMON_INTERCEPTOR_ENTER(ctx, qsort, base, nmemb, size, compar);
10068 // Run the comparator over all array elements to detect any memory issues.
10069 if (nmemb > 1) {
10070 for (SIZE_T i = 0; i < nmemb - 1; ++i) {
10071 void *p = (void *)((char *)base + i * size);
10072 void *q = (void *)((char *)base + (i + 1) * size);
10073 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
10074 compar(p, q);
10075 }
10076 }
10077 qsort_compar_f old_compar = qsort_compar;
10078 SIZE_T old_size = qsort_size;
10079 // Handle qsort() implementations that recurse using an
10080 // interposable function call:
10081 bool already_wrapped = compar == wrapped_qsort_compar;
10082 if (already_wrapped) {
10083 // This case should only happen if the qsort() implementation calls itself
10084 // using a preemptible function call (e.g. the FreeBSD libc version).
10085 // Check that the size and comparator arguments are as expected.
10086 CHECK_NE(compar, qsort_compar);
10087 CHECK_EQ(qsort_size, size);
10088 } else {
10089 qsort_compar = compar;
10090 qsort_size = size;
10091 }
10092 REAL(qsort)(base, nmemb, size, wrapped_qsort_compar);
10093 if (!already_wrapped) {
10094 qsort_compar = old_compar;
10095 qsort_size = old_size;
10096 }
10097 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, base, nmemb * size);
10098}
10099# define INIT_QSORT COMMON_INTERCEPT_FUNCTION(qsort)
10100#else
10101# define INIT_QSORT
10102#endif
10103
10104#if SANITIZER_INTERCEPT_BSEARCH
10105typedef int (*bsearch_compar_f)(const void *, const void *);
10106struct bsearch_compar_params {
10107 const void *key;
10108 bsearch_compar_f compar;
10109};
10110
10111static int wrapped_bsearch_compar(const void *key, const void *b) {
10112 const bsearch_compar_params *params = (const bsearch_compar_params *)key;
10113 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
10114 return params->compar(params->key, b);
10115}
10116
10117INTERCEPTOR(void *, bsearch, const void *key, const void *base, SIZE_T nmemb,
10118 SIZE_T size, bsearch_compar_f compar) {
10119 void *ctx;
10120 COMMON_INTERCEPTOR_ENTER(ctx, bsearch, key, base, nmemb, size, compar);
10121 bsearch_compar_params params = {key, compar};
10122 return REAL(bsearch)(¶ms, base, nmemb, size, wrapped_bsearch_compar);
10123}
10124# define INIT_BSEARCH COMMON_INTERCEPT_FUNCTION(bsearch)
10125#else
10126# define INIT_BSEARCH
10127#endif
10128
10129#if SANITIZER_INTERCEPT_SIGALTSTACK
10130INTERCEPTOR(int, sigaltstack, void *ss, void *oss) {
10131 void *ctx;
10132 COMMON_INTERCEPTOR_ENTER(ctx, sigaltstack, ss, oss);
10133 int r = REAL(sigaltstack)(ss, oss);
10134 if (r == 0 && oss != nullptr) {
10135 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oss, struct_stack_t_sz);
10136 }
10137 return r;
10138}
10139#define INIT_SIGALTSTACK COMMON_INTERCEPT_FUNCTION(sigaltstack)
10140#else
10141#define INIT_SIGALTSTACK
10142#endif
10143
10144#if SANITIZER_INTERCEPT_PROCCTL
10145INTERCEPTOR(int, procctl, int idtype, u64 id, int cmd, uptr data) {
10146 void *ctx;
10147 COMMON_INTERCEPTOR_ENTER(ctx, procctl, idtype, id, cmd, data);
10148 static const int PROC_REAP_ACQUIRE = 2;
10149 static const int PROC_REAP_RELEASE = 3;
10150 static const int PROC_REAP_STATUS = 4;
10151 static const int PROC_REAP_GETPIDS = 5;
10152 static const int PROC_REAP_KILL = 6;
10153 if (cmd < PROC_REAP_ACQUIRE || cmd > PROC_REAP_KILL) {
10154 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)data, sizeof(int));
10155 } else {
10156 // reap_acquire/reap_release bears no arguments.
10157 if (cmd > PROC_REAP_RELEASE) {
10158 unsigned int reapsz;
10159 switch (cmd) {
10160 case PROC_REAP_STATUS:
10161 reapsz = struct_procctl_reaper_status_sz;
10162 break;
10163 case PROC_REAP_GETPIDS:
10164 reapsz = struct_procctl_reaper_pids_sz;
10165 break;
10166 case PROC_REAP_KILL:
10167 reapsz = struct_procctl_reaper_kill_sz;
10168 break;
10169 }
10170 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)data, reapsz);
10171 }
10172 }
10173 return REAL(procctl)(idtype, id, cmd, data);
10174}
10175#define INIT_PROCCTL COMMON_INTERCEPT_FUNCTION(procctl)
10176#else
10177#define INIT_PROCCTL
10178#endif
10179
10180#if SANITIZER_INTERCEPT_UNAME
10181INTERCEPTOR(int, uname, struct utsname *utsname) {
10182#if SANITIZER_LINUX
10183 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
10184 return internal_uname(utsname);
10185#endif
10186 void *ctx;
10187 COMMON_INTERCEPTOR_ENTER(ctx, uname, utsname);
10188 int res = REAL(uname)(utsname);
10189 if (!res)
10190 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, utsname,
10191 __sanitizer::struct_utsname_sz);
10192 return res;
10193}
10194#define INIT_UNAME COMMON_INTERCEPT_FUNCTION(uname)
10195#else
10196#define INIT_UNAME
10197#endif
10198
10199#if SANITIZER_INTERCEPT___XUNAME
10200// FreeBSD's <sys/utsname.h> define uname() as
10201// static __inline int uname(struct utsname *name) {
10202// return __xuname(SYS_NMLN, (void*)name);
10203// }
10204INTERCEPTOR(int, __xuname, int size, void *utsname) {
10205 void *ctx;
10206 COMMON_INTERCEPTOR_ENTER(ctx, __xuname, size, utsname);
10207 int res = REAL(__xuname)(size, utsname);
10208 if (!res)
10209 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, utsname,
10210 __sanitizer::struct_utsname_sz);
10211 return res;
10212}
10213#define INIT___XUNAME COMMON_INTERCEPT_FUNCTION(__xuname)
10214#else
10215#define INIT___XUNAME
10216#endif
10217
10218#if SANITIZER_INTERCEPT_ARGP_PARSE
10219INTERCEPTOR(int, argp_parse, const struct argp *argp, int argc, char **argv,
10220 unsigned flags, int *arg_index, void *input) {
10221 void *ctx;
10222 COMMON_INTERCEPTOR_ENTER(ctx, argp_parse, argp, argc, argv, flags, arg_index,
10223 input);
10224 for (int i = 0; i < argc; i++)
10225 COMMON_INTERCEPTOR_READ_RANGE(ctx, argv[i], internal_strlen(argv[i]) + 1);
10226 int res = REAL(argp_parse)(argp, argc, argv, flags, arg_index, input);
10227 if (!res && arg_index)
10228 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, arg_index, sizeof(int));
10229 return res;
10230}
10231
10232#define INIT_ARGP_PARSE COMMON_INTERCEPT_FUNCTION(argp_parse);
10233#else
10234#define INIT_ARGP_PARSE
10235#endif
10236
10237#if SANITIZER_INTERCEPT_CPUSET_GETAFFINITY
10238INTERCEPTOR(int, cpuset_getaffinity, int level, int which, __int64_t id, SIZE_T cpusetsize, __sanitizer_cpuset_t *mask) {
10239 void *ctx;
10240 COMMON_INTERCEPTOR_ENTER(ctx, cpuset_getaffinity, level, which, id, cpusetsize, mask);
10241 int res = REAL(cpuset_getaffinity)(level, which, id, cpusetsize, mask);
10242 if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize);
10243 return res;
10244}
10245#define INIT_CPUSET_GETAFFINITY COMMON_INTERCEPT_FUNCTION(cpuset_getaffinity);
10246#else
10247#define INIT_CPUSET_GETAFFINITY
10248#endif
10249
10250#if SANITIZER_INTERCEPT_PREADV2
10251INTERCEPTOR(SSIZE_T, preadv2, int fd, __sanitizer_iovec *iov, int iovcnt,
10252 OFF_T offset, int flags) {
10253 void *ctx;
10254 COMMON_INTERCEPTOR_ENTER(ctx, preadv2, fd, iov, iovcnt, offset, flags);
10255 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
10256 SSIZE_T res = REAL(preadv2)(fd, iov, iovcnt, offset, flags);
10257 if (res > 0) write_iovec(ctx, iov, iovcnt, res);
10258 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
10259 return res;
10260}
10261#define INIT_PREADV2 COMMON_INTERCEPT_FUNCTION(preadv2)
10262#else
10263#define INIT_PREADV2
10264#endif
10265
10266#if SANITIZER_INTERCEPT_PWRITEV2
10267INTERCEPTOR(SSIZE_T, pwritev2, int fd, __sanitizer_iovec *iov, int iovcnt,
10268 OFF_T offset, int flags) {
10269 void *ctx;
10270 COMMON_INTERCEPTOR_ENTER(ctx, pwritev2, fd, iov, iovcnt, offset, flags);
10271 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
10272 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
10273 SSIZE_T res = REAL(pwritev2)(fd, iov, iovcnt, offset, flags);
10274 if (res > 0) read_iovec(ctx, iov, iovcnt, res);
10275 return res;
10276}
10277#define INIT_PWRITEV2 COMMON_INTERCEPT_FUNCTION(pwritev2)
10278#else
10279#define INIT_PWRITEV2
10280#endif
10281
10282#if SANITIZER_INTERCEPT_FREADLINK
10283INTERCEPTOR(SSIZE_T, freadlink, int fd, char *buf, SIZE_T bufsiz) {
10284 void *ctx;
10285 COMMON_INTERCEPTOR_ENTER(ctx, freadlink, fd, buf, bufsiz);
10286 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
10287 SSIZE_T res = REAL(freadlink)(fd, buf, bufsiz);
10288 if (res > 0)
10289 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res);
10290 if (res >= 0 && fd > 0)
10291 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
10292 return res;
10293}
10294# define INIT_FREADLINK COMMON_INTERCEPT_FUNCTION(freadlink)
10295#else
10296# define INIT_FREADLINK
10297#endif
10298
10299#if SANITIZER_INTERCEPT_GETSERVENT_R || SANITIZER_INTERCEPT_GETSERVBYNAME_R || \
10300 SANITIZER_INTERCEPT_GETSERVBYPORT_R
10301
10302UNUSED static void HandleGetServentReentrantResult(
10303 void *ctx, int res, struct __sanitizer_servent *result_buf, char *buf,
10304 SIZE_T buflen, struct __sanitizer_servent **result) {
10305 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (char *)result, sizeof(void *));
10306 if (res)
10307 return;
10308 if (*result) {
10309 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (char *)*result,
10310 sizeof(__sanitizer_servent));
10311 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
10312 }
10313}
10314
10315#endif
10316
10317#if SANITIZER_INTERCEPT_GETSERVENT_R
10318INTERCEPTOR(int, getservent_r, struct __sanitizer_servent *result_buf,
10319 char *buf, SIZE_T buflen, struct __sanitizer_servent **result) {
10320 void *ctx;
10321 COMMON_INTERCEPTOR_ENTER(ctx, getservent_r, result_buf, buf, buflen, result);
10322 int res = REAL(getservent_r)(result_buf, buf, buflen, result);
10323 HandleGetServentReentrantResult(ctx, res, result_buf, buf, buflen, result);
10324 return res;
10325}
10326# define INIT_GETSERVENT_R COMMON_INTERCEPT_FUNCTION(getservent_r)
10327#else
10328# define INIT_GETSERVENT_R
10329#endif
10330
10331#if SANITIZER_INTERCEPT_GETSERVBYNAME_R
10332INTERCEPTOR(int, getservbyname_r, const char *name, const char *proto,
10333 struct __sanitizer_servent *result_buf, char *buf, SIZE_T buflen,
10334 struct __sanitizer_servent **result) {
10335 void *ctx;
10336 COMMON_INTERCEPTOR_ENTER(ctx, getservbyname_r, name, proto, result_buf, buf,
10337 buflen, result);
10338 COMMON_INTERCEPTOR_READ_STRING(ctx, name, internal_strlen(name));
10339 int res = REAL(getservbyname_r)(name, proto, result_buf, buf, buflen, result);
10340 HandleGetServentReentrantResult(ctx, res, result_buf, buf, buflen, result);
10341 return res;
10342}
10343# define INIT_GETSERVBYNAME_R COMMON_INTERCEPT_FUNCTION(getservbyname_r)
10344#else
10345# define INIT_GETSERVBYNAME_R
10346#endif
10347
10348#if SANITIZER_INTERCEPT_GETSERVBYPORT_R
10349INTERCEPTOR(int, getservbyport_r, int port, const char *proto,
10350 struct __sanitizer_servent *result_buf, char *buf, SIZE_T buflen,
10351 struct __sanitizer_servent **result) {
10352 void *ctx;
10353 COMMON_INTERCEPTOR_ENTER(ctx, getservbyport_r, port, proto, result_buf, buf,
10354 buflen, result);
10355 int res = REAL(getservbyport_r)(port, proto, result_buf, buf, buflen, result);
10356 HandleGetServentReentrantResult(ctx, res, result_buf, buf, buflen, result);
10357 return res;
10358}
10359# define INIT_GETSERVBYPORT_R COMMON_INTERCEPT_FUNCTION(getservbyport_r)
10360#else
10361# define INIT_GETSERVBYPORT_R
10362#endif
10363
10364#include "sanitizer_common_interceptors_netbsd_compat.inc"
10365
10366namespace __sanitizer {
10367void InitializeMemintrinsicInterceptors();
10368} // namespace __sanitizer
10369
10370static void InitializeCommonInterceptors() {
10371#if SI_POSIX
10372 static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
10373 interceptor_metadata_map = new ((void *)&metadata_mem) MetadataHashMap();
10374#endif
10375
10376 __sanitizer::InitializeMemintrinsicInterceptors();
10377
10378 INIT_MMAP;
10379 INIT_MMAP64;
10380 INIT_TEXTDOMAIN;
10381 INIT_STRLEN;
10382 INIT_STRNLEN;
10383 INIT_STRNDUP;
10384 INIT___STRNDUP;
10385 INIT_STRCMP;
10386 INIT_STRNCMP;
10387 INIT_STRCASECMP;
10388 INIT_STRNCASECMP;
10389 INIT_STRSTR;
10390 INIT_STRCASESTR;
10391 INIT_STRCHR;
10392 INIT_STRCHRNUL;
10393 INIT_STRRCHR;
10394 INIT_STRSPN;
10395 INIT_STRTOK;
10396 INIT_STRPBRK;
10397 INIT_STRXFRM;
10398 INIT___STRXFRM_L;
10399 INIT_MEMCHR;
10400 INIT_MEMCMP;
10401 INIT_BCMP;
10402 INIT_MEMRCHR;
10403 INIT_MEMMEM;
10404 INIT_READ;
10405 INIT_FREAD;
10406 INIT_PREAD;
10407 INIT_PREAD64;
10408 INIT_READV;
10409 INIT_PREADV;
10410 INIT_PREADV64;
10411 INIT_WRITE;
10412 INIT_FWRITE;
10413 INIT_PWRITE;
10414 INIT_PWRITE64;
10415 INIT_WRITEV;
10416 INIT_PWRITEV;
10417 INIT_PWRITEV64;
10418 INIT_FGETS;
10419 INIT_FPUTS;
10420 INIT_PUTS;
10421 INIT_PRCTL;
10422 INIT_LOCALTIME_AND_FRIENDS;
10423 INIT_STRPTIME;
10424 INIT_SCANF;
10425 INIT_ISOC99_SCANF;
10426 INIT_PRINTF;
10427 INIT_PRINTF_L;
10428 INIT_ISOC99_PRINTF;
10429 INIT_SETPROCTITLE;
10430 INIT_FREXP;
10431 INIT_FREXPF;
10432 INIT_FREXPL;
10433 INIT_GETPWNAM_AND_FRIENDS;
10434 INIT_GETPWNAM_R_AND_FRIENDS;
10435 INIT_GETPWENT;
10436 INIT_FGETPWENT;
10437 INIT_GETPWENT_R;
10438 INIT_FGETPWENT_R;
10439 INIT_FGETGRENT_R;
10440 INIT_SETPWENT;
10441 INIT_CLOCK_GETTIME;
10442 INIT_CLOCK_GETCPUCLOCKID;
10443 INIT_TIMER_CREATE;
10444 INIT_GETITIMER;
10445 INIT_TIME;
10446 INIT_TIMESPEC_GET;
10447 INIT_GLOB;
10448 INIT_GLOB64;
10449 INIT___B64_TO;
10450 INIT_DN_COMP_EXPAND;
10451 INIT_POSIX_SPAWN;
10452 INIT_WAIT;
10453 INIT_WAIT4;
10454 INIT_INET;
10455 INIT_PTHREAD_GETSCHEDPARAM;
10456 INIT_GETADDRINFO;
10457 INIT_GETNAMEINFO;
10458 INIT_GETSOCKNAME;
10459 INIT_GETHOSTBYNAME;
10460 INIT_GETHOSTBYNAME2;
10461 INIT_GETHOSTBYNAME_R;
10462 INIT_GETHOSTBYNAME2_R;
10463 INIT_GETHOSTBYADDR_R;
10464 INIT_GETHOSTENT_R;
10465 INIT_GETSOCKOPT;
10466 INIT_ACCEPT;
10467 INIT_ACCEPT4;
10468 INIT_PACCEPT;
10469 INIT_MODF;
10470 INIT_RECVMSG;
10471 INIT_SENDMSG;
10472 INIT_RECVMMSG;
10473 INIT_SENDMMSG;
10474 INIT_SYSMSG;
10475 INIT_GETPEERNAME;
10476 INIT_IOCTL;
10477 INIT_INET_ATON;
10478 INIT_SYSINFO;
10479 INIT_READDIR;
10480 INIT_READDIR64;
10481 INIT_PTRACE;
10482 INIT_SETLOCALE;
10483 INIT_GETCWD;
10484 INIT_GET_CURRENT_DIR_NAME;
10485 INIT_STRTOIMAX;
10486 INIT_STRTOIMAX_C23;
10487 INIT_MBSTOWCS;
10488 INIT_MBSNRTOWCS;
10489 INIT_WCSTOMBS;
10490 INIT_WCSNRTOMBS;
10491 INIT_WCRTOMB;
10492 INIT_WCTOMB;
10493 INIT_TCGETATTR;
10494 INIT_REALPATH;
10495 INIT_CANONICALIZE_FILE_NAME;
10496 INIT_CONFSTR;
10497 INIT_SCHED_GETAFFINITY;
10498 INIT_SCHED_GETPARAM;
10499 INIT_STRERROR;
10500 INIT_STRERROR_R;
10501 INIT_XPG_STRERROR_R;
10502 INIT_SCANDIR;
10503 INIT_SCANDIR64;
10504 INIT_GETGROUPS;
10505 INIT_POLL;
10506 INIT_PPOLL;
10507 INIT_WORDEXP;
10508 INIT_SIGWAIT;
10509 INIT_SIGWAITINFO;
10510 INIT_SIGTIMEDWAIT;
10511 INIT_SIGSETOPS;
10512 INIT_SIGSET_LOGICOPS;
10513 INIT_SIGPENDING;
10514 INIT_SIGPROCMASK;
10515 INIT_PTHREAD_SIGMASK;
10516 INIT_BACKTRACE;
10517 INIT__EXIT;
10518 INIT___LIBC_THR_SETCANCELSTATE;
10519 INIT_GETMNTENT;
10520 INIT_GETMNTENT_R;
10521 INIT_STATFS;
10522 INIT_STATFS64;
10523 INIT_STATVFS;
10524 INIT_STATVFS64;
10525 INIT_INITGROUPS;
10526 INIT_ETHER_NTOA_ATON;
10527 INIT_ETHER_HOST;
10528 INIT_ETHER_R;
10529 INIT_SHMCTL;
10530 INIT_RANDOM_R;
10531 INIT_PTHREAD_ATTR_GET;
10532 INIT_PTHREAD_ATTR_GET_SCHED;
10533 INIT_PTHREAD_ATTR_GETINHERITSCHED;
10534 INIT_PTHREAD_ATTR_GETAFFINITY_NP;
10535 INIT_PTHREAD_GETAFFINITY_NP;
10536 INIT_PTHREAD_MUTEXATTR_GETPSHARED;
10537 INIT_PTHREAD_MUTEXATTR_GETTYPE;
10538 INIT_PTHREAD_MUTEXATTR_GETPROTOCOL;
10539 INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING;
10540 INIT_PTHREAD_MUTEXATTR_GETROBUST;
10541 INIT_PTHREAD_MUTEXATTR_GETROBUST_NP;
10542 INIT_PTHREAD_RWLOCKATTR_GETPSHARED;
10543 INIT_PTHREAD_RWLOCKATTR_GETKIND_NP;
10544 INIT_PTHREAD_CONDATTR_GETPSHARED;
10545 INIT_PTHREAD_CONDATTR_GETCLOCK;
10546 INIT_PTHREAD_BARRIERATTR_GETPSHARED;
10547 INIT_TMPNAM;
10548 INIT_TMPNAM_R;
10549 INIT_PTSNAME;
10550 INIT_PTSNAME_R;
10551 INIT_TTYNAME;
10552 INIT_TTYNAME_R;
10553 INIT_TEMPNAM;
10554 INIT_PTHREAD_SETNAME_NP;
10555 INIT_PTHREAD_GETNAME_NP;
10556 INIT_SINCOS;
10557 INIT_REMQUO;
10558 INIT_REMQUOL;
10559 INIT_LGAMMA;
10560 INIT_LGAMMAL;
10561 INIT_LGAMMA_R;
10562 INIT_LGAMMAL_R;
10563 INIT_DRAND48_R;
10564 INIT_RAND_R;
10565 INIT_GETLINE;
10566 INIT_ICONV;
10567 INIT_TIMES;
10568 INIT_TLS_GET_ADDR;
10569 INIT_LISTXATTR;
10570 INIT_GETXATTR;
10571 INIT_GETRESID;
10572 INIT_GETIFADDRS;
10573 INIT_IF_INDEXTONAME;
10574 INIT_CAPGET;
10575 INIT_FTIME;
10576 INIT_XDR;
10577 INIT_XDRREC_LINUX;
10578 INIT_TSEARCH;
10579 INIT_LIBIO_INTERNALS;
10580 INIT_FOPEN;
10581 INIT_FOPEN64;
10582 INIT_FLOPEN;
10583 INIT_OPEN_MEMSTREAM;
10584 INIT_OBSTACK;
10585 INIT_FFLUSH;
10586 INIT_FCLOSE;
10587 INIT_DLOPEN_DLCLOSE;
10588 INIT_GETPASS;
10589 INIT_TIMERFD;
10590 INIT_MLOCKX;
10591 INIT_FOPENCOOKIE;
10592 INIT_SEM;
10593 INIT_PTHREAD_SETCANCEL;
10594 INIT_MINCORE;
10595 INIT_PROCESS_VM_READV;
10596 INIT_CTERMID;
10597 INIT_CTERMID_R;
10598 INIT_RECV_RECVFROM;
10599 INIT_SEND_SENDTO;
10600 INIT_STAT;
10601 INIT_STAT64;
10602 INIT_EVENTFD_READ_WRITE;
10603 INIT_LSTAT;
10604 INIT_LSTAT64;
10605 INIT___XSTAT;
10606 INIT___XSTAT64;
10607 INIT___LXSTAT;
10608 INIT___LXSTAT64;
10609 // FIXME: add other *stat interceptors.
10610 INIT_UTMP;
10611 INIT_UTMPX;
10612 INIT_GETLOADAVG;
10613 INIT_WCSLEN;
10614 INIT_WCSCAT;
10615 INIT_WCSDUP;
10616 INIT_WCSXFRM;
10617 INIT___WCSXFRM_L;
10618 INIT_ACCT;
10619 INIT_USER_FROM_UID;
10620 INIT_UID_FROM_USER;
10621 INIT_GROUP_FROM_GID;
10622 INIT_GID_FROM_GROUP;
10623 INIT_ACCESS;
10624 INIT_FACCESSAT;
10625 INIT_GETGROUPLIST;
10626 INIT_GETGROUPMEMBERSHIP;
10627 INIT_READLINK;
10628 INIT_READLINKAT;
10629 INIT_NAME_TO_HANDLE_AT;
10630 INIT_OPEN_BY_HANDLE_AT;
10631 INIT_STRLCPY;
10632 INIT_DEVNAME;
10633 INIT_DEVNAME_R;
10634 INIT_FGETLN;
10635 INIT_STRMODE;
10636 INIT_TTYENT;
10637 INIT_PROTOENT;
10638 INIT_PROTOENT_R;
10639 INIT_NETENT;
10640 INIT_GETMNTINFO;
10641 INIT_MI_VECTOR_HASH;
10642 INIT_SETVBUF;
10643 INIT_GETVFSSTAT;
10644 INIT_REGEX;
10645 INIT_REGEXSUB;
10646 INIT_FTS;
10647 INIT_SYSCTL;
10648 INIT_ASYSCTL;
10649 INIT_SYSCTLGETMIBINFO;
10650 INIT_NL_LANGINFO;
10651 INIT_MODCTL;
10652 INIT_STRTONUM;
10653 INIT_FPARSELN;
10654 INIT_STATVFS1;
10655 INIT_STRTOI;
10656 INIT_CAPSICUM;
10657 INIT_SHA1;
10658 INIT_MD4;
10659 INIT_RMD160;
10660 INIT_FSEEK;
10661 INIT_MD2;
10662 INIT_VIS;
10663 INIT_CDB;
10664 INIT_GETFSENT;
10665 INIT_ARC4RANDOM;
10666 INIT_POPEN;
10667 INIT_POPENVE;
10668 INIT_PCLOSE;
10669 INIT_FUNOPEN;
10670 INIT_FUNOPEN2;
10671 INIT_FDEVNAME;
10672 INIT_GETUSERSHELL;
10673 INIT_SL_INIT;
10674 INIT_GETRANDOM;
10675 INIT_GETENTROPY;
10676 INIT_QSORT;
10677 INIT_QSORT_R;
10678 INIT_BSEARCH;
10679 INIT_SIGALTSTACK;
10680 INIT_PROCCTL
10681 INIT_UNAME;
10682 INIT___XUNAME;
10683 INIT_ARGP_PARSE;
10684 INIT_CPUSET_GETAFFINITY;
10685 INIT_PREADV2;
10686 INIT_PWRITEV2;
10687 INIT_FREADLINK;
10688
10689 INIT___PRINTF_CHK;
10690 INIT_GETSERVENT_R;
10691 INIT_GETSERVBYNAME_R;
10692 INIT_GETSERVBYPORT_R;
10693}