master
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008-2010, 2015 Robert N. M. Watson
5 * Copyright (c) 2012 FreeBSD Foundation
6 * All rights reserved.
7 *
8 * This software was developed at the University of Cambridge Computer
9 * Laboratory with support from a grant from Google, Inc.
10 *
11 * Portions of this software were developed by Pawel Jakub Dawidek under
12 * sponsorship from the FreeBSD Foundation.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36/*
37 * Definitions for FreeBSD capabilities facility.
38 */
39#ifndef _SYS_CAPSICUM_H_
40#define _SYS_CAPSICUM_H_
41
42#include <sys/cdefs.h>
43#include <sys/param.h>
44
45#include <sys/caprights.h>
46#include <sys/file.h>
47#include <sys/fcntl.h>
48
49#ifndef _KERNEL
50#include <stdbool.h>
51#endif
52
53#define CAPRIGHT(idx, bit) ((1ULL << (57 + (idx))) | (bit))
54
55/*
56 * Possible rights on capabilities.
57 *
58 * Notes:
59 * Some system calls don't require a capability in order to perform an
60 * operation on an fd. These include: close, dup, dup2.
61 *
62 * sendfile is authorized using CAP_READ on the file and CAP_WRITE on the
63 * socket.
64 *
65 * mmap() and aio*() system calls will need special attention as they may
66 * involve reads or writes depending a great deal on context.
67 */
68
69/* INDEX 0 */
70
71/*
72 * General file I/O.
73 */
74/* Allows for openat(O_RDONLY), read(2), readv(2). */
75#define CAP_READ CAPRIGHT(0, 0x0000000000000001ULL)
76/* Allows for openat(O_WRONLY | O_APPEND), write(2), writev(2). */
77#define CAP_WRITE CAPRIGHT(0, 0x0000000000000002ULL)
78/* Allows for lseek(fd, 0, SEEK_CUR). */
79#define CAP_SEEK_TELL CAPRIGHT(0, 0x0000000000000004ULL)
80/* Allows for lseek(2). */
81#define CAP_SEEK (CAP_SEEK_TELL | 0x0000000000000008ULL)
82/* Allows for aio_read(2), pread(2), preadv(2). */
83#define CAP_PREAD (CAP_SEEK | CAP_READ)
84/*
85 * Allows for aio_write(2), openat(O_WRONLY) (without O_APPEND), pwrite(2),
86 * pwritev(2).
87 */
88#define CAP_PWRITE (CAP_SEEK | CAP_WRITE)
89/* Allows for mmap(PROT_NONE). */
90#define CAP_MMAP CAPRIGHT(0, 0x0000000000000010ULL)
91/* Allows for mmap(PROT_READ). */
92#define CAP_MMAP_R (CAP_MMAP | CAP_SEEK | CAP_READ)
93/* Allows for mmap(PROT_WRITE). */
94#define CAP_MMAP_W (CAP_MMAP | CAP_SEEK | CAP_WRITE)
95/* Allows for mmap(PROT_EXEC). */
96#define CAP_MMAP_X (CAP_MMAP | CAP_SEEK | 0x0000000000000020ULL)
97/* Allows for mmap(PROT_READ | PROT_WRITE). */
98#define CAP_MMAP_RW (CAP_MMAP_R | CAP_MMAP_W)
99/* Allows for mmap(PROT_READ | PROT_EXEC). */
100#define CAP_MMAP_RX (CAP_MMAP_R | CAP_MMAP_X)
101/* Allows for mmap(PROT_WRITE | PROT_EXEC). */
102#define CAP_MMAP_WX (CAP_MMAP_W | CAP_MMAP_X)
103/* Allows for mmap(PROT_READ | PROT_WRITE | PROT_EXEC). */
104#define CAP_MMAP_RWX (CAP_MMAP_R | CAP_MMAP_W | CAP_MMAP_X)
105/* Allows for openat(O_CREAT). */
106#define CAP_CREATE CAPRIGHT(0, 0x0000000000000040ULL)
107/* Allows for openat(O_EXEC) and fexecve(2) in turn. */
108#define CAP_FEXECVE CAPRIGHT(0, 0x0000000000000080ULL)
109/* Allows for openat(O_SYNC), openat(O_FSYNC), fsync(2), aio_fsync(2). */
110#define CAP_FSYNC CAPRIGHT(0, 0x0000000000000100ULL)
111/* Allows for openat(O_TRUNC), ftruncate(2). */
112#define CAP_FTRUNCATE CAPRIGHT(0, 0x0000000000000200ULL)
113
114/* Lookups - used to constrain *at() calls. */
115#define CAP_LOOKUP CAPRIGHT(0, 0x0000000000000400ULL)
116
117/* VFS methods. */
118/* Allows for fchdir(2). */
119#define CAP_FCHDIR CAPRIGHT(0, 0x0000000000000800ULL)
120/* Allows for fchflags(2). */
121#define CAP_FCHFLAGS CAPRIGHT(0, 0x0000000000001000ULL)
122/* Allows for fchflags(2) and chflagsat(2). */
123#define CAP_CHFLAGSAT (CAP_FCHFLAGS | CAP_LOOKUP)
124/* Allows for fchmod(2). */
125#define CAP_FCHMOD CAPRIGHT(0, 0x0000000000002000ULL)
126/* Allows for fchmod(2) and fchmodat(2). */
127#define CAP_FCHMODAT (CAP_FCHMOD | CAP_LOOKUP)
128/* Allows for fchown(2). */
129#define CAP_FCHOWN CAPRIGHT(0, 0x0000000000004000ULL)
130/* Allows for fchown(2) and fchownat(2). */
131#define CAP_FCHOWNAT (CAP_FCHOWN | CAP_LOOKUP)
132/* Allows for fcntl(2). */
133#define CAP_FCNTL CAPRIGHT(0, 0x0000000000008000ULL)
134/*
135 * Allows for flock(2), openat(O_SHLOCK), openat(O_EXLOCK),
136 * fcntl(F_SETLK_REMOTE), fcntl(F_SETLKW), fcntl(F_SETLK), fcntl(F_GETLK).
137 */
138#define CAP_FLOCK CAPRIGHT(0, 0x0000000000010000ULL)
139/* Allows for fpathconf(2). */
140#define CAP_FPATHCONF CAPRIGHT(0, 0x0000000000020000ULL)
141/* Allows for UFS background-fsck operations. */
142#define CAP_FSCK CAPRIGHT(0, 0x0000000000040000ULL)
143/* Allows for fstat(2). */
144#define CAP_FSTAT CAPRIGHT(0, 0x0000000000080000ULL)
145/* Allows for fstat(2), fstatat(2) and faccessat(2). */
146#define CAP_FSTATAT (CAP_FSTAT | CAP_LOOKUP)
147/* Allows for fstatfs(2). */
148#define CAP_FSTATFS CAPRIGHT(0, 0x0000000000100000ULL)
149/* Allows for futimens(2) and futimes(2). */
150#define CAP_FUTIMES CAPRIGHT(0, 0x0000000000200000ULL)
151/* Allows for futimens(2), futimes(2), futimesat(2) and utimensat(2). */
152#define CAP_FUTIMESAT (CAP_FUTIMES | CAP_LOOKUP)
153/* Allows for linkat(2) (target directory descriptor). */
154#define CAP_LINKAT_TARGET (CAP_LOOKUP | 0x0000000000400000ULL)
155/* Allows for mkdirat(2). */
156#define CAP_MKDIRAT (CAP_LOOKUP | 0x0000000000800000ULL)
157/* Allows for mkfifoat(2). */
158#define CAP_MKFIFOAT (CAP_LOOKUP | 0x0000000001000000ULL)
159/* Allows for mknodat(2). */
160#define CAP_MKNODAT (CAP_LOOKUP | 0x0000000002000000ULL)
161/* Allows for renameat(2) (source directory descriptor). */
162#define CAP_RENAMEAT_SOURCE (CAP_LOOKUP | 0x0000000004000000ULL)
163/* Allows for symlinkat(2). */
164#define CAP_SYMLINKAT (CAP_LOOKUP | 0x0000000008000000ULL)
165/*
166 * Allows for unlinkat(2) and renameat(2) if destination object exists and
167 * will be removed.
168 */
169#define CAP_UNLINKAT (CAP_LOOKUP | 0x0000000010000000ULL)
170
171/* Socket operations. */
172/* Allows for accept(2) and accept4(2). */
173#define CAP_ACCEPT CAPRIGHT(0, 0x0000000020000000ULL)
174/* Allows for bind(2). */
175#define CAP_BIND CAPRIGHT(0, 0x0000000040000000ULL)
176/* Allows for connect(2). */
177#define CAP_CONNECT CAPRIGHT(0, 0x0000000080000000ULL)
178/* Allows for getpeername(2). */
179#define CAP_GETPEERNAME CAPRIGHT(0, 0x0000000100000000ULL)
180/* Allows for getsockname(2). */
181#define CAP_GETSOCKNAME CAPRIGHT(0, 0x0000000200000000ULL)
182/* Allows for getsockopt(2). */
183#define CAP_GETSOCKOPT CAPRIGHT(0, 0x0000000400000000ULL)
184/* Allows for listen(2). */
185#define CAP_LISTEN CAPRIGHT(0, 0x0000000800000000ULL)
186/* Allows for sctp_peeloff(2). */
187#define CAP_PEELOFF CAPRIGHT(0, 0x0000001000000000ULL)
188#define CAP_RECV CAP_READ
189#define CAP_SEND CAP_WRITE
190/* Allows for setsockopt(2). */
191#define CAP_SETSOCKOPT CAPRIGHT(0, 0x0000002000000000ULL)
192/* Allows for shutdown(2). */
193#define CAP_SHUTDOWN CAPRIGHT(0, 0x0000004000000000ULL)
194
195/* Allows for bindat(2) on a directory descriptor. */
196#define CAP_BINDAT (CAP_LOOKUP | 0x0000008000000000ULL)
197/* Allows for connectat(2) on a directory descriptor. */
198#define CAP_CONNECTAT (CAP_LOOKUP | 0x0000010000000000ULL)
199
200/* Allows for linkat(2) (source directory descriptor). */
201#define CAP_LINKAT_SOURCE (CAP_LOOKUP | 0x0000020000000000ULL)
202/* Allows for renameat(2) (target directory descriptor). */
203#define CAP_RENAMEAT_TARGET (CAP_LOOKUP | 0x0000040000000000ULL)
204
205#define CAP_SOCK_CLIENT \
206 (CAP_CONNECT | CAP_GETPEERNAME | CAP_GETSOCKNAME | CAP_GETSOCKOPT | \
207 CAP_PEELOFF | CAP_RECV | CAP_SEND | CAP_SETSOCKOPT | CAP_SHUTDOWN)
208#define CAP_SOCK_SERVER \
209 (CAP_ACCEPT | CAP_BIND | CAP_GETPEERNAME | CAP_GETSOCKNAME | \
210 CAP_GETSOCKOPT | CAP_LISTEN | CAP_PEELOFF | CAP_RECV | CAP_SEND | \
211 CAP_SETSOCKOPT | CAP_SHUTDOWN)
212
213/* All used bits for index 0. */
214#define CAP_ALL0 CAPRIGHT(0, 0x000007FFFFFFFFFFULL)
215
216/* Available bits for index 0. */
217#define CAP_UNUSED0_44 CAPRIGHT(0, 0x0000080000000000ULL)
218/* ... */
219#define CAP_UNUSED0_57 CAPRIGHT(0, 0x0100000000000000ULL)
220
221/* INDEX 1 */
222
223/* Mandatory Access Control. */
224/* Allows for mac_get_fd(3). */
225#define CAP_MAC_GET CAPRIGHT(1, 0x0000000000000001ULL)
226/* Allows for mac_set_fd(3). */
227#define CAP_MAC_SET CAPRIGHT(1, 0x0000000000000002ULL)
228
229/* Methods on semaphores. */
230#define CAP_SEM_GETVALUE CAPRIGHT(1, 0x0000000000000004ULL)
231#define CAP_SEM_POST CAPRIGHT(1, 0x0000000000000008ULL)
232#define CAP_SEM_WAIT CAPRIGHT(1, 0x0000000000000010ULL)
233
234/* Allows select(2) and poll(2) on descriptor. */
235#define CAP_EVENT CAPRIGHT(1, 0x0000000000000020ULL)
236/* Allows for kevent(2) on kqueue descriptor with eventlist != NULL. */
237#define CAP_KQUEUE_EVENT CAPRIGHT(1, 0x0000000000000040ULL)
238
239/* Strange and powerful rights that should not be given lightly. */
240/* Allows for ioctl(2). */
241#define CAP_IOCTL CAPRIGHT(1, 0x0000000000000080ULL)
242#define CAP_TTYHOOK CAPRIGHT(1, 0x0000000000000100ULL)
243
244/* Process management via process descriptors. */
245/* Allows for pdgetpid(2). */
246#define CAP_PDGETPID CAPRIGHT(1, 0x0000000000000200ULL)
247/*
248 * Allows for pdwait4(2).
249 *
250 * XXX: this constant was imported unused, but is targeted to be implemented
251 * in the future (bug 235871).
252 */
253#define CAP_PDWAIT CAPRIGHT(1, 0x0000000000000400ULL)
254/* Allows for pdkill(2). */
255#define CAP_PDKILL CAPRIGHT(1, 0x0000000000000800ULL)
256
257/* Extended attributes. */
258/* Allows for extattr_delete_fd(2). */
259#define CAP_EXTATTR_DELETE CAPRIGHT(1, 0x0000000000001000ULL)
260/* Allows for extattr_get_fd(2). */
261#define CAP_EXTATTR_GET CAPRIGHT(1, 0x0000000000002000ULL)
262/* Allows for extattr_list_fd(2). */
263#define CAP_EXTATTR_LIST CAPRIGHT(1, 0x0000000000004000ULL)
264/* Allows for extattr_set_fd(2). */
265#define CAP_EXTATTR_SET CAPRIGHT(1, 0x0000000000008000ULL)
266
267/* Access Control Lists. */
268/* Allows for acl_valid_fd_np(3). */
269#define CAP_ACL_CHECK CAPRIGHT(1, 0x0000000000010000ULL)
270/* Allows for acl_delete_fd_np(3). */
271#define CAP_ACL_DELETE CAPRIGHT(1, 0x0000000000020000ULL)
272/* Allows for acl_get_fd(3) and acl_get_fd_np(3). */
273#define CAP_ACL_GET CAPRIGHT(1, 0x0000000000040000ULL)
274/* Allows for acl_set_fd(3) and acl_set_fd_np(3). */
275#define CAP_ACL_SET CAPRIGHT(1, 0x0000000000080000ULL)
276
277/* Allows for kevent(2) on kqueue descriptor with changelist != NULL. */
278#define CAP_KQUEUE_CHANGE CAPRIGHT(1, 0x0000000000100000ULL)
279
280#define CAP_KQUEUE (CAP_KQUEUE_EVENT | CAP_KQUEUE_CHANGE)
281
282/* All used bits for index 1. */
283#define CAP_ALL1 CAPRIGHT(1, 0x00000000001FFFFFULL)
284
285/* Available bits for index 1. */
286#define CAP_UNUSED1_22 CAPRIGHT(1, 0x0000000000200000ULL)
287/* ... */
288#define CAP_UNUSED1_57 CAPRIGHT(1, 0x0100000000000000ULL)
289
290/* Backward compatibility. */
291#define CAP_POLL_EVENT CAP_EVENT
292
293#define CAP_ALL(rights) do { \
294 (rights)->cr_rights[0] = \
295 ((uint64_t)CAP_RIGHTS_VERSION << 62) | CAP_ALL0; \
296 (rights)->cr_rights[1] = CAP_ALL1; \
297} while (0)
298
299#define CAP_NONE(rights) do { \
300 (rights)->cr_rights[0] = \
301 ((uint64_t)CAP_RIGHTS_VERSION << 62) | CAPRIGHT(0, 0ULL); \
302 (rights)->cr_rights[1] = CAPRIGHT(1, 0ULL); \
303} while (0)
304
305#define CAPRVER(right) ((int)((right) >> 62))
306#define CAPVER(rights) CAPRVER((rights)->cr_rights[0])
307#define CAPARSIZE(rights) (CAPVER(rights) + 2)
308#define CAPIDXBIT(right) ((int)(((right) >> 57) & 0x1F))
309
310/*
311 * Allowed fcntl(2) commands.
312 */
313#define CAP_FCNTL_GETFL (1 << F_GETFL)
314#define CAP_FCNTL_SETFL (1 << F_SETFL)
315#define CAP_FCNTL_GETOWN (1 << F_GETOWN)
316#define CAP_FCNTL_SETOWN (1 << F_SETOWN)
317#define CAP_FCNTL_ALL (CAP_FCNTL_GETFL | CAP_FCNTL_SETFL | \
318 CAP_FCNTL_GETOWN | CAP_FCNTL_SETOWN)
319
320#define CAP_IOCTLS_ALL SSIZE_MAX
321
322__BEGIN_DECLS
323
324#define cap_rights_init(...) \
325 __cap_rights_init(CAP_RIGHTS_VERSION, __VA_ARGS__, 0ULL)
326cap_rights_t *__cap_rights_init(int version, cap_rights_t *rights, ...);
327
328#define cap_rights_set(...) \
329 __cap_rights_set(__VA_ARGS__, 0ULL)
330cap_rights_t *__cap_rights_set(cap_rights_t *rights, ...);
331
332#define cap_rights_clear(...) \
333 __cap_rights_clear(__VA_ARGS__, 0ULL)
334cap_rights_t *__cap_rights_clear(cap_rights_t *rights, ...);
335
336#define cap_rights_is_set(...) \
337 __cap_rights_is_set(__VA_ARGS__, 0ULL)
338bool __cap_rights_is_set(const cap_rights_t *rights, ...);
339
340bool cap_rights_is_empty(const cap_rights_t *rights);
341
342bool cap_rights_is_valid(const cap_rights_t *rights);
343cap_rights_t *cap_rights_merge(cap_rights_t *dst, const cap_rights_t *src);
344cap_rights_t *cap_rights_remove(cap_rights_t *dst, const cap_rights_t *src);
345
346#ifdef _KERNEL
347/*
348 * We only support one size to reduce branching.
349 */
350_Static_assert(CAP_RIGHTS_VERSION == CAP_RIGHTS_VERSION_00,
351 "unsupported version of capsicum rights");
352
353#define cap_rights_init_zero(r) ({ \
354 cap_rights_t *_r = (r); \
355 CAP_NONE(_r); \
356 _r; \
357})
358
359#define cap_rights_init_one(r, right) ({ \
360 CTASSERT(CAPRVER(right) == CAP_RIGHTS_VERSION); \
361 cap_rights_t *_r = (r); \
362 CAP_NONE(_r); \
363 _r->cr_rights[CAPIDXBIT(right) - 1] |= right; \
364 _r; \
365})
366
367#define cap_rights_set_one(r, right) ({ \
368 CTASSERT(CAPRVER(right) == CAP_RIGHTS_VERSION); \
369 cap_rights_t *_r = (r); \
370 _r->cr_rights[CAPIDXBIT(right) - 1] |= right; \
371 _r; \
372})
373
374/*
375 * Allow checking caps which are possibly getting modified at the same time.
376 * The caller is expected to determine whether the result is legitimate via
377 * other means, see fget_unlocked for an example.
378 */
379
380static inline bool
381cap_rights_contains_transient(const cap_rights_t *big, const cap_rights_t *little)
382{
383
384 if (__predict_true(
385 (big->cr_rights[0] & little->cr_rights[0]) == little->cr_rights[0] &&
386 (big->cr_rights[1] & little->cr_rights[1]) == little->cr_rights[1]))
387 return (true);
388 return (false);
389}
390
391#define cap_rights_contains cap_rights_contains_transient
392
393int cap_check_failed_notcapable(const cap_rights_t *havep,
394 const cap_rights_t *needp);
395
396static inline int
397cap_check_inline(const cap_rights_t *havep, const cap_rights_t *needp)
398{
399
400 if (__predict_false(!cap_rights_contains(havep, needp)))
401 return (cap_check_failed_notcapable(havep, needp));
402 return (0);
403}
404
405static inline int
406cap_check_inline_transient(const cap_rights_t *havep, const cap_rights_t *needp)
407{
408
409 if (__predict_false(!cap_rights_contains(havep, needp)))
410 return (1);
411 return (0);
412}
413#else
414bool cap_rights_contains(const cap_rights_t *big, const cap_rights_t *little);
415#endif
416
417__END_DECLS
418
419#ifdef _KERNEL
420
421#include <sys/systm.h>
422#include <sys/ktrace.h>
423
424#ifdef KTRACE
425#define CAP_TRACING(td) KTRPOINT((td), KTR_CAPFAIL)
426#else
427#define CAP_TRACING(td) 0
428#endif
429
430#define IN_CAPABILITY_MODE(td) (((td)->td_ucred->cr_flags & CRED_FLAG_CAPMODE) != 0)
431
432struct filedesc;
433struct filedescent;
434
435/*
436 * Test whether a capability grants the requested rights.
437 */
438int cap_check(const cap_rights_t *havep, const cap_rights_t *needp);
439/*
440 * Convert capability rights into VM access flags.
441 */
442vm_prot_t cap_rights_to_vmprot(const cap_rights_t *havep);
443
444/*
445 * For the purposes of procstat(1) and similar tools, allow kern_descrip.c to
446 * extract the rights from a capability.
447 *
448 * Dereferencing fdep requires filedesc.h, but including it would cause
449 * significant pollution. Instead add a macro for consumers which want it,
450 * most notably kern_descrip.c.
451 */
452#define cap_rights_fde_inline(fdep) (&(fdep)->fde_rights)
453
454const cap_rights_t *cap_rights_fde(const struct filedescent *fde);
455const cap_rights_t *cap_rights(struct filedesc *fdp, int fd);
456
457int cap_ioctl_check(struct filedesc *fdp, int fd, u_long cmd);
458int cap_fcntl_check_fde(struct filedescent *fde, int cmd);
459int cap_fcntl_check(struct filedesc *fdp, int fd, int cmd);
460
461extern bool trap_enotcap;
462
463#else /* !_KERNEL */
464
465__BEGIN_DECLS
466/*
467 * cap_enter(): Cause the process to enter capability mode, which will
468 * prevent it from directly accessing global namespaces. System calls will
469 * be limited to process-local, process-inherited, or file descriptor
470 * operations. If already in capability mode, a no-op.
471 */
472int cap_enter(void);
473
474/*
475 * Are we sandboxed (in capability mode)?
476 * This is a libc wrapper around the cap_getmode(2) system call.
477 */
478bool cap_sandboxed(void);
479
480/*
481 * cap_getmode(): Are we in capability mode?
482 */
483int cap_getmode(u_int *modep);
484
485/*
486 * Limits capability rights for the given descriptor (CAP_*).
487 */
488int cap_rights_limit(int fd, const cap_rights_t *rights);
489/*
490 * Returns capability rights for the given descriptor.
491 */
492#define cap_rights_get(fd, rights) \
493 __cap_rights_get(CAP_RIGHTS_VERSION, (fd), (rights))
494int __cap_rights_get(int version, int fd, cap_rights_t *rights);
495/*
496 * Limits allowed ioctls for the given descriptor.
497 */
498int cap_ioctls_limit(int fd, const cap_ioctl_t *cmds, size_t ncmds);
499/*
500 * Returns array of allowed ioctls for the given descriptor.
501 * If all ioctls are allowed, the cmds array is not populated and
502 * the function returns CAP_IOCTLS_ALL.
503 */
504ssize_t cap_ioctls_get(int fd, cap_ioctl_t *cmds, size_t maxcmds);
505/*
506 * Limits allowed fcntls for the given descriptor (CAP_FCNTL_*).
507 */
508int cap_fcntls_limit(int fd, uint32_t fcntlrights);
509/*
510 * Returns bitmask of allowed fcntls for the given descriptor.
511 */
512int cap_fcntls_get(int fd, uint32_t *fcntlrightsp);
513
514__END_DECLS
515
516#endif /* !_KERNEL */
517
518#endif /* !_SYS_CAPSICUM_H_ */