master
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1991, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)unistd.h 8.12 (Berkeley) 4/27/95
32 */
33
34#ifndef _UNISTD_H_
35#define _UNISTD_H_
36
37#include <sys/cdefs.h>
38#include <sys/types.h> /* XXX adds too much pollution. */
39#include <sys/unistd.h>
40#include <sys/_null.h>
41#include <sys/_types.h>
42
43#ifndef _GID_T_DECLARED
44typedef __gid_t gid_t;
45#define _GID_T_DECLARED
46#endif
47
48#ifndef _OFF_T_DECLARED
49typedef __off_t off_t;
50#define _OFF_T_DECLARED
51#endif
52
53#ifndef _PID_T_DECLARED
54typedef __pid_t pid_t;
55#define _PID_T_DECLARED
56#endif
57
58#ifndef _SIZE_T_DECLARED
59typedef __size_t size_t;
60#define _SIZE_T_DECLARED
61#endif
62
63#ifndef _SSIZE_T_DECLARED
64typedef __ssize_t ssize_t;
65#define _SSIZE_T_DECLARED
66#endif
67
68#ifndef _UID_T_DECLARED
69typedef __uid_t uid_t;
70#define _UID_T_DECLARED
71#endif
72
73#ifndef _USECONDS_T_DECLARED
74typedef __useconds_t useconds_t;
75#define _USECONDS_T_DECLARED
76#endif
77
78#define STDIN_FILENO 0 /* standard input file descriptor */
79#define STDOUT_FILENO 1 /* standard output file descriptor */
80#define STDERR_FILENO 2 /* standard error file descriptor */
81
82#if __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
83#define F_ULOCK 0 /* unlock locked section */
84#define F_LOCK 1 /* lock a section for exclusive use */
85#define F_TLOCK 2 /* test and lock a section for exclusive use */
86#define F_TEST 3 /* test a section for locks by other procs */
87#endif
88
89/*
90 * POSIX options and option groups we unconditionally do or don't
91 * implement. This list includes those options which are exclusively
92 * implemented (or not) in user mode. Please keep this list in
93 * alphabetical order.
94 *
95 * Anything which is defined as zero below **must** have an
96 * implementation for the corresponding sysconf() which is able to
97 * determine conclusively whether or not the feature is supported.
98 * Anything which is defined as other than -1 below **must** have
99 * complete headers, types, and function declarations as specified by
100 * the POSIX standard; however, if the relevant sysconf() function
101 * returns -1, the functions may be stubbed out.
102 */
103#define _POSIX_BARRIERS 200112L
104#define _POSIX_CPUTIME 200112L
105#define _POSIX_READER_WRITER_LOCKS 200112L
106#define _POSIX_REGEXP 1
107#define _POSIX_SHELL 1
108#define _POSIX_SPAWN 200112L
109#define _POSIX_SPIN_LOCKS 200112L
110#define _POSIX_THREAD_ATTR_STACKADDR 200112L
111#define _POSIX_THREAD_ATTR_STACKSIZE 200112L
112#define _POSIX_THREAD_CPUTIME 200112L
113#define _POSIX_THREAD_PRIO_INHERIT 200112L
114#define _POSIX_THREAD_PRIO_PROTECT 200112L
115#define _POSIX_THREAD_PRIORITY_SCHEDULING 200112L
116#define _POSIX_THREAD_PROCESS_SHARED 200112L
117#define _POSIX_THREAD_SAFE_FUNCTIONS -1
118#define _POSIX_THREAD_SPORADIC_SERVER -1
119#define _POSIX_THREADS 200112L
120#define _POSIX_TRACE -1
121#define _POSIX_TRACE_EVENT_FILTER -1
122#define _POSIX_TRACE_INHERIT -1
123#define _POSIX_TRACE_LOG -1
124#define _POSIX2_C_BIND 200112L /* mandatory */
125#define _POSIX2_C_DEV -1 /* need c99 utility */
126#define _POSIX2_CHAR_TERM 1
127#define _POSIX2_FORT_DEV -1 /* need fort77 utility */
128#define _POSIX2_FORT_RUN 200112L
129#define _POSIX2_LOCALEDEF -1
130#define _POSIX2_PBS -1
131#define _POSIX2_PBS_ACCOUNTING -1
132#define _POSIX2_PBS_CHECKPOINT -1
133#define _POSIX2_PBS_LOCATE -1
134#define _POSIX2_PBS_MESSAGE -1
135#define _POSIX2_PBS_TRACK -1
136#define _POSIX2_SW_DEV -1 /* XXX ??? */
137#define _POSIX2_UPE 200112L
138#define _V6_ILP32_OFF32 -1
139#define _V6_ILP32_OFFBIG 0
140#define _V6_LP64_OFF64 0
141#define _V6_LPBIG_OFFBIG -1
142
143#if __XSI_VISIBLE
144#define _XOPEN_CRYPT -1 /* XXX ??? */
145#define _XOPEN_ENH_I18N -1 /* mandatory in XSI */
146#define _XOPEN_LEGACY -1
147#define _XOPEN_REALTIME -1
148#define _XOPEN_REALTIME_THREADS -1
149#define _XOPEN_UNIX -1
150#endif
151
152/* Define the POSIX.2 version we target for compliance. */
153#define _POSIX2_VERSION 199212L
154
155/*
156 * POSIX-style system configuration variable accessors (for the
157 * sysconf function). The kernel does not directly implement the
158 * sysconf() interface; rather, a C library stub translates references
159 * to sysconf() into calls to sysctl() using a giant switch statement.
160 * Those that are marked `user' are implemented entirely in the C
161 * library and never query the kernel. pathconf() is implemented
162 * directly by the kernel so those are not defined here.
163 */
164#define _SC_ARG_MAX 1
165#define _SC_CHILD_MAX 2
166#define _SC_CLK_TCK 3
167#define _SC_NGROUPS_MAX 4
168#define _SC_OPEN_MAX 5
169#define _SC_JOB_CONTROL 6
170#define _SC_SAVED_IDS 7
171#define _SC_VERSION 8
172#define _SC_BC_BASE_MAX 9 /* user */
173#define _SC_BC_DIM_MAX 10 /* user */
174#define _SC_BC_SCALE_MAX 11 /* user */
175#define _SC_BC_STRING_MAX 12 /* user */
176#define _SC_COLL_WEIGHTS_MAX 13 /* user */
177#define _SC_EXPR_NEST_MAX 14 /* user */
178#define _SC_LINE_MAX 15 /* user */
179#define _SC_RE_DUP_MAX 16 /* user */
180#define _SC_2_VERSION 17 /* user */
181#define _SC_2_C_BIND 18 /* user */
182#define _SC_2_C_DEV 19 /* user */
183#define _SC_2_CHAR_TERM 20 /* user */
184#define _SC_2_FORT_DEV 21 /* user */
185#define _SC_2_FORT_RUN 22 /* user */
186#define _SC_2_LOCALEDEF 23 /* user */
187#define _SC_2_SW_DEV 24 /* user */
188#define _SC_2_UPE 25 /* user */
189#define _SC_STREAM_MAX 26 /* user */
190#define _SC_TZNAME_MAX 27 /* user */
191
192#if __POSIX_VISIBLE >= 199309
193#define _SC_ASYNCHRONOUS_IO 28
194#define _SC_MAPPED_FILES 29
195#define _SC_MEMLOCK 30
196#define _SC_MEMLOCK_RANGE 31
197#define _SC_MEMORY_PROTECTION 32
198#define _SC_MESSAGE_PASSING 33
199#define _SC_PRIORITIZED_IO 34
200#define _SC_PRIORITY_SCHEDULING 35
201#define _SC_REALTIME_SIGNALS 36
202#define _SC_SEMAPHORES 37
203#define _SC_FSYNC 38
204#define _SC_SHARED_MEMORY_OBJECTS 39
205#define _SC_SYNCHRONIZED_IO 40
206#define _SC_TIMERS 41
207#define _SC_AIO_LISTIO_MAX 42
208#define _SC_AIO_MAX 43
209#define _SC_AIO_PRIO_DELTA_MAX 44
210#define _SC_DELAYTIMER_MAX 45
211#define _SC_MQ_OPEN_MAX 46
212#define _SC_PAGESIZE 47
213#define _SC_RTSIG_MAX 48
214#define _SC_SEM_NSEMS_MAX 49
215#define _SC_SEM_VALUE_MAX 50
216#define _SC_SIGQUEUE_MAX 51
217#define _SC_TIMER_MAX 52
218#endif
219
220#if __POSIX_VISIBLE >= 200112
221#define _SC_2_PBS 59 /* user */
222#define _SC_2_PBS_ACCOUNTING 60 /* user */
223#define _SC_2_PBS_CHECKPOINT 61 /* user */
224#define _SC_2_PBS_LOCATE 62 /* user */
225#define _SC_2_PBS_MESSAGE 63 /* user */
226#define _SC_2_PBS_TRACK 64 /* user */
227#define _SC_ADVISORY_INFO 65
228#define _SC_BARRIERS 66 /* user */
229#define _SC_CLOCK_SELECTION 67
230#define _SC_CPUTIME 68
231#define _SC_FILE_LOCKING 69
232#define _SC_GETGR_R_SIZE_MAX 70 /* user */
233#define _SC_GETPW_R_SIZE_MAX 71 /* user */
234#define _SC_HOST_NAME_MAX 72
235#define _SC_LOGIN_NAME_MAX 73
236#define _SC_MONOTONIC_CLOCK 74
237#define _SC_MQ_PRIO_MAX 75
238#define _SC_READER_WRITER_LOCKS 76 /* user */
239#define _SC_REGEXP 77 /* user */
240#define _SC_SHELL 78 /* user */
241#define _SC_SPAWN 79 /* user */
242#define _SC_SPIN_LOCKS 80 /* user */
243#define _SC_SPORADIC_SERVER 81
244#define _SC_THREAD_ATTR_STACKADDR 82 /* user */
245#define _SC_THREAD_ATTR_STACKSIZE 83 /* user */
246#define _SC_THREAD_CPUTIME 84 /* user */
247#define _SC_THREAD_DESTRUCTOR_ITERATIONS 85 /* user */
248#define _SC_THREAD_KEYS_MAX 86 /* user */
249#define _SC_THREAD_PRIO_INHERIT 87 /* user */
250#define _SC_THREAD_PRIO_PROTECT 88 /* user */
251#define _SC_THREAD_PRIORITY_SCHEDULING 89 /* user */
252#define _SC_THREAD_PROCESS_SHARED 90 /* user */
253#define _SC_THREAD_SAFE_FUNCTIONS 91 /* user */
254#define _SC_THREAD_SPORADIC_SERVER 92 /* user */
255#define _SC_THREAD_STACK_MIN 93 /* user */
256#define _SC_THREAD_THREADS_MAX 94 /* user */
257#define _SC_TIMEOUTS 95 /* user */
258#define _SC_THREADS 96 /* user */
259#define _SC_TRACE 97 /* user */
260#define _SC_TRACE_EVENT_FILTER 98 /* user */
261#define _SC_TRACE_INHERIT 99 /* user */
262#define _SC_TRACE_LOG 100 /* user */
263#define _SC_TTY_NAME_MAX 101 /* user */
264#define _SC_TYPED_MEMORY_OBJECTS 102
265#define _SC_V6_ILP32_OFF32 103 /* user */
266#define _SC_V6_ILP32_OFFBIG 104 /* user */
267#define _SC_V6_LP64_OFF64 105 /* user */
268#define _SC_V6_LPBIG_OFFBIG 106 /* user */
269#define _SC_IPV6 118
270#define _SC_RAW_SOCKETS 119
271#define _SC_SYMLOOP_MAX 120
272#endif
273
274#if __XSI_VISIBLE
275#define _SC_ATEXIT_MAX 107 /* user */
276#define _SC_IOV_MAX 56
277#define _SC_PAGE_SIZE _SC_PAGESIZE
278#define _SC_XOPEN_CRYPT 108 /* user */
279#define _SC_XOPEN_ENH_I18N 109 /* user */
280#define _SC_XOPEN_LEGACY 110 /* user */
281#define _SC_XOPEN_REALTIME 111
282#define _SC_XOPEN_REALTIME_THREADS 112
283#define _SC_XOPEN_SHM 113
284#define _SC_XOPEN_STREAMS 114
285#define _SC_XOPEN_UNIX 115
286#define _SC_XOPEN_VERSION 116
287#define _SC_XOPEN_XCU_VERSION 117 /* user */
288#endif
289
290#if __BSD_VISIBLE
291#define _SC_NPROCESSORS_CONF 57
292#define _SC_NPROCESSORS_ONLN 58
293#define _SC_CPUSET_SIZE 122
294#endif
295
296/* Extensions found in Solaris and Linux. */
297#define _SC_PHYS_PAGES 121
298
299/* Keys for the confstr(3) function. */
300#if __POSIX_VISIBLE >= 199209
301#define _CS_PATH 1 /* default value of PATH */
302#endif
303
304#if __POSIX_VISIBLE >= 200112
305#define _CS_POSIX_V6_ILP32_OFF32_CFLAGS 2
306#define _CS_POSIX_V6_ILP32_OFF32_LDFLAGS 3
307#define _CS_POSIX_V6_ILP32_OFF32_LIBS 4
308#define _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS 5
309#define _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS 6
310#define _CS_POSIX_V6_ILP32_OFFBIG_LIBS 7
311#define _CS_POSIX_V6_LP64_OFF64_CFLAGS 8
312#define _CS_POSIX_V6_LP64_OFF64_LDFLAGS 9
313#define _CS_POSIX_V6_LP64_OFF64_LIBS 10
314#define _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS 11
315#define _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS 12
316#define _CS_POSIX_V6_LPBIG_OFFBIG_LIBS 13
317#define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS 14
318#endif
319
320__BEGIN_DECLS
321/* 1003.1-1990 */
322void _exit(int) __dead2;
323int access(const char *, int);
324unsigned int alarm(unsigned int);
325int chdir(const char *);
326int chown(const char *, uid_t, gid_t);
327int close(int);
328void closefrom(int);
329int dup(int);
330int dup2(int, int);
331int execl(const char *, const char *, ...) __null_sentinel;
332int execle(const char *, const char *, ...);
333int execlp(const char *, const char *, ...) __null_sentinel;
334int execv(const char *, char * const *);
335int execve(const char *, char * const *, char * const *);
336int execvp(const char *, char * const *);
337pid_t fork(void);
338long fpathconf(int, int);
339char *getcwd(char *, size_t);
340gid_t getegid(void);
341uid_t geteuid(void);
342gid_t getgid(void);
343int getgroups(int, gid_t []);
344char *getlogin(void);
345pid_t getpgrp(void);
346pid_t getpid(void);
347pid_t getppid(void);
348uid_t getuid(void);
349int isatty(int);
350int link(const char *, const char *);
351#ifndef _LSEEK_DECLARED
352#define _LSEEK_DECLARED
353off_t lseek(int, off_t, int);
354#endif
355long pathconf(const char *, int);
356int pause(void);
357int pipe(int *);
358ssize_t read(int, void *, size_t);
359int rmdir(const char *);
360int setgid(gid_t);
361int setpgid(pid_t, pid_t);
362pid_t setsid(void);
363int setuid(uid_t);
364unsigned int sleep(unsigned int);
365long sysconf(int);
366pid_t tcgetpgrp(int);
367int tcsetpgrp(int, pid_t);
368char *ttyname(int);
369int ttyname_r(int, char *, size_t);
370int unlink(const char *);
371ssize_t write(int, const void *, size_t);
372
373/* 1003.2-1992 */
374#if __POSIX_VISIBLE >= 199209 || __XSI_VISIBLE
375size_t confstr(int, char *, size_t);
376#ifndef _GETOPT_DECLARED
377#define _GETOPT_DECLARED
378int getopt(int, char * const [], const char *);
379
380extern char *optarg; /* getopt(3) external variables */
381extern int optind, opterr, optopt;
382#endif /* _GETOPT_DECLARED */
383#endif
384
385/* ISO/IEC 9945-1: 1996 */
386#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE
387int fsync(int);
388int fdatasync(int);
389
390/*
391 * ftruncate() was in the POSIX Realtime Extension (it's used for shared
392 * memory), but truncate() was not.
393 */
394#ifndef _FTRUNCATE_DECLARED
395#define _FTRUNCATE_DECLARED
396int ftruncate(int, off_t);
397#endif
398#endif
399
400#if __POSIX_VISIBLE >= 199506
401int getlogin_r(char *, size_t);
402#endif
403
404/* 1003.1-2001 */
405#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
406int fchown(int, uid_t, gid_t);
407ssize_t readlink(const char * __restrict, char * __restrict, size_t);
408#endif
409#if __POSIX_VISIBLE >= 200112
410int gethostname(char *, size_t);
411int setegid(gid_t);
412int seteuid(uid_t);
413#endif
414
415/* 1003.1-2008 */
416#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
417int getsid(pid_t _pid);
418int fchdir(int);
419int getpgid(pid_t _pid);
420int lchown(const char *, uid_t, gid_t);
421ssize_t pread(int, void *, size_t, off_t);
422ssize_t pwrite(int, const void *, size_t, off_t);
423
424/* See comment at ftruncate() above. */
425#ifndef _TRUNCATE_DECLARED
426#define _TRUNCATE_DECLARED
427int truncate(const char *, off_t);
428#endif
429#endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */
430
431#if __POSIX_VISIBLE >= 200809
432int faccessat(int, const char *, int, int);
433int fchownat(int, const char *, uid_t, gid_t, int);
434int fexecve(int, char *const [], char *const []);
435int linkat(int, const char *, int, const char *, int);
436ssize_t readlinkat(int, const char * __restrict, char * __restrict, size_t);
437int symlinkat(const char *, int, const char *);
438int unlinkat(int, const char *, int);
439#endif /* __POSIX_VISIBLE >= 200809 */
440
441/*
442 * symlink() was originally in POSIX.1a, which was withdrawn after
443 * being overtaken by events (1003.1-2001). It was in XPG4.2, and of
444 * course has been in BSD since 4.2.
445 */
446#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE >= 402
447int symlink(const char * __restrict, const char * __restrict);
448#endif
449
450/* X/Open System Interfaces */
451#if __XSI_VISIBLE
452char *crypt(const char *, const char *);
453long gethostid(void);
454int lockf(int, int, off_t);
455int nice(int);
456int setregid(gid_t, gid_t);
457int setreuid(uid_t, uid_t);
458
459#ifndef _SWAB_DECLARED
460#define _SWAB_DECLARED
461void swab(const void * __restrict, void * __restrict, ssize_t);
462#endif /* _SWAB_DECLARED */
463
464void sync(void);
465
466#endif /* __XSI_VISIBLE */
467
468#if (__XSI_VISIBLE && __XSI_VISIBLE <= 500) || __BSD_VISIBLE
469int brk(const void *);
470int chroot(const char *);
471int getdtablesize(void);
472int getpagesize(void) __pure2;
473char *getpass(const char *);
474void *sbrk(intptr_t);
475#endif
476
477#if (__XSI_VISIBLE && __XSI_VISIBLE <= 600) || __BSD_VISIBLE
478char *getwd(char *); /* obsoleted by getcwd() */
479useconds_t
480 ualarm(useconds_t, useconds_t);
481int usleep(useconds_t);
482pid_t vfork(void) __returns_twice;
483#endif
484
485#if __BSD_VISIBLE
486struct timeval; /* select(2) */
487
488struct crypt_data {
489 int initialized; /* For compatibility with glibc. */
490 char __buf[256]; /* Buffer returned by crypt_r(). */
491};
492
493int acct(const char *);
494int async_daemon(void);
495int check_utility_compat(const char *);
496int close_range(unsigned int, unsigned int, int);
497ssize_t copy_file_range(int, off_t *, int, off_t *, size_t, unsigned int);
498const char *
499 crypt_get_format(void);
500char *crypt_r(const char *, const char *, struct crypt_data *);
501int crypt_set_format(const char *);
502int dup3(int, int, int);
503int eaccess(const char *, int);
504void endusershell(void);
505int exect(const char *, char * const *, char * const *);
506int execvP(const char *, const char *, char * const *);
507int execvpe(const char *, char * const *, char * const *);
508int feature_present(const char *);
509char *fflagstostr(u_long);
510int getdomainname(char *, int);
511int getentropy(void *, size_t);
512int getgrouplist(const char *, gid_t, gid_t *, int *);
513int getloginclass(char *, size_t);
514mode_t getmode(const void *, mode_t);
515int getosreldate(void);
516int getpeereid(int, uid_t *, gid_t *);
517int getresgid(gid_t *, gid_t *, gid_t *);
518int getresuid(uid_t *, uid_t *, uid_t *);
519char *getusershell(void);
520int initgroups(const char *, gid_t);
521int iruserok(unsigned long, int, const char *, const char *);
522int iruserok_sa(const void *, int, int, const char *, const char *);
523int issetugid(void);
524void __FreeBSD_libc_enter_restricted_mode(void);
525int kcmp(pid_t pid1, pid_t pid2, int type, uintptr_t idx1, uintptr_t idx2);
526long lpathconf(const char *, int);
527#ifndef _MKDTEMP_DECLARED
528char *mkdtemp(char *);
529#define _MKDTEMP_DECLARED
530#endif
531#ifndef _MKNOD_DECLARED
532int mknod(const char *, mode_t, dev_t);
533#define _MKNOD_DECLARED
534#endif
535#ifndef _MKSTEMP_DECLARED
536int mkstemp(char *);
537#define _MKSTEMP_DECLARED
538#endif
539int mkstemps(char *, int);
540#ifndef _MKTEMP_DECLARED
541char *mktemp(char *);
542#define _MKTEMP_DECLARED
543#endif
544int nfssvc(int, void *);
545int nlm_syscall(int, int, int, char **);
546int pipe2(int *, int);
547int profil(char *, size_t, vm_offset_t, int);
548int rcmd(char **, int, const char *, const char *, const char *, int *);
549int rcmd_af(char **, int, const char *,
550 const char *, const char *, int *, int);
551int rcmdsh(char **, int, const char *,
552 const char *, const char *, const char *);
553char *re_comp(const char *);
554int re_exec(const char *);
555int reboot(int);
556int revoke(const char *);
557pid_t rfork(int) __returns_twice;
558pid_t rfork_thread(int, void *, int (*)(void *), void *);
559int rresvport(int *);
560int rresvport_af(int *, int);
561int ruserok(const char *, int, const char *, const char *);
562#ifndef _SELECT_DECLARED
563#define _SELECT_DECLARED
564int select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
565#endif
566int setdomainname(const char *, int);
567int setgroups(int, const gid_t *);
568void sethostid(long);
569int sethostname(const char *, int);
570int setlogin(const char *);
571int setloginclass(const char *);
572void *setmode(const char *);
573int setpgrp(pid_t, pid_t); /* obsoleted by setpgid() */
574void setproctitle(const char *_fmt, ...) __printf0like(1, 2);
575void setproctitle_fast(const char *_fmt, ...) __printf0like(1, 2);
576int setresgid(gid_t, gid_t, gid_t);
577int setresuid(uid_t, uid_t, uid_t);
578int setrgid(gid_t);
579int setruid(uid_t);
580void setusershell(void);
581int strtofflags(char **, u_long *, u_long *);
582int swapon(const char *);
583int swapoff(const char *, u_int);
584int syscall(int, ...);
585off_t __syscall(quad_t, ...);
586int undelete(const char *);
587int unwhiteout(const char *);
588void *valloc(size_t); /* obsoleted by malloc() */
589int funlinkat(int, const char *, int, int);
590pid_t _Fork(void);
591
592#ifndef _OPTRESET_DECLARED
593#define _OPTRESET_DECLARED
594extern int optreset; /* getopt(3) external variable */
595#endif
596#endif /* __BSD_VISIBLE */
597__END_DECLS
598
599#endif /* !_UNISTD_H_ */