xref: /openbsd/include/unistd.h (revision cafeb892)
1 /*	$OpenBSD: unistd.h,v 1.108 2023/12/12 15:30:55 deraadt Exp $ */
2 /*	$NetBSD: unistd.h,v 1.26.4.1 1996/05/28 02:31:51 mrg Exp $	*/
3 
4 /*-
5  * Copyright (c) 1991 The Regents of the University of California.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  *	@(#)unistd.h	5.13 (Berkeley) 6/17/91
33  */
34 
35 #ifndef _UNISTD_H_
36 #define	_UNISTD_H_
37 
38 #include <sys/_null.h>
39 #include <sys/types.h>
40 #include <sys/unistd.h>
41 
42 #define	STDIN_FILENO	0	/* standard input file descriptor */
43 #define	STDOUT_FILENO	1	/* standard output file descriptor */
44 #define	STDERR_FILENO	2	/* standard error file descriptor */
45 
46 #if __XPG_VISIBLE || __POSIX_VISIBLE >= 200112
47 #define F_ULOCK         0	/* unlock locked section */
48 #define F_LOCK          1	/* lock a section for exclusive use */
49 #define F_TLOCK         2	/* test and lock a section for exclusive use */
50 #define F_TEST          3	/* test a section for locks by other procs */
51 #endif
52 
53 /*
54  * POSIX options and option groups we unconditionally do or don't
55  * implement.  Please keep this list in alphabetical order.
56  *
57  * Anything which is defined as zero below **must** have an
58  * implementation for the corresponding sysconf() which is able to
59  * determine conclusively whether or not the feature is supported.
60  * Anything which is defined as other than -1 below **must** have
61  * complete headers, types, and function declarations as specified by
62  * the POSIX standard; however, if the relevant sysconf() function
63  * returns -1, the functions may be stubbed out.
64  */
65 #define _POSIX_ADVISORY_INFO			(-1)
66 #define _POSIX_ASYNCHRONOUS_IO			(-1)
67 #define _POSIX_BARRIERS				200112L
68 #define _POSIX_CHOWN_RESTRICTED			1
69 #define _POSIX_CLOCK_SELECTION			(-1)
70 #define _POSIX_CPUTIME				200809L
71 #define _POSIX_FSYNC				200112L
72 #define _POSIX_IPV6				0
73 #define _POSIX_JOB_CONTROL			1
74 #define _POSIX_MAPPED_FILES			200112L
75 #define _POSIX_MEMLOCK				200112L
76 #define _POSIX_MEMLOCK_RANGE			200112L
77 #define _POSIX_MEMORY_PROTECTION		200112L
78 #define _POSIX_MESSAGE_PASSING			(-1)
79 #define _POSIX_MONOTONIC_CLOCK			200112L
80 #define _POSIX_NO_TRUNC				1
81 #define _POSIX_PRIORITIZED_IO			(-1)
82 #define _POSIX_PRIORITY_SCHEDULING		(-1)
83 #define _POSIX_RAW_SOCKETS			200112L
84 #define _POSIX_READER_WRITER_LOCKS		200112L
85 #define _POSIX_REALTIME_SIGNALS			(-1)
86 #define _POSIX_REGEXP				1
87 #define _POSIX_SAVED_IDS			1
88 #define _POSIX_SEMAPHORES			200112L
89 #define _POSIX_SHARED_MEMORY_OBJECTS		200809L
90 #define _POSIX_SHELL				1
91 #define _POSIX_SPAWN				200112L
92 #define _POSIX_SPIN_LOCKS			200112L
93 #define _POSIX_SPORADIC_SERVER			(-1)
94 #define _POSIX_SYNCHRONIZED_IO			(-1)
95 #define _POSIX_THREAD_ATTR_STACKADDR		200112L
96 #define _POSIX_THREAD_ATTR_STACKSIZE		200112L
97 #define _POSIX_THREAD_CPUTIME			200809L
98 #define _POSIX_THREAD_PRIO_INHERIT		(-1)
99 #define _POSIX_THREAD_PRIO_PROTECT		(-1)
100 #define _POSIX_THREAD_PRIORITY_SCHEDULING	(-1)
101 #define _POSIX_THREAD_PROCESS_SHARED		(-1)
102 #define _POSIX_THREAD_ROBUST_PRIO_INHERIT	(-1)
103 #define _POSIX_THREAD_ROBUST_PRIO_PROTECT	(-1)
104 #define _POSIX_THREAD_SAFE_FUNCTIONS		200112L
105 #define _POSIX_THREAD_SPORADIC_SERVER		(-1)
106 #define _POSIX_THREADS				200112L
107 #define _POSIX_TIMEOUTS				200112L
108 #define _POSIX_TIMERS				(-1)
109 #define _POSIX_TRACE				(-1)
110 #define _POSIX_TRACE_EVENT_FILTER		(-1)
111 #define _POSIX_TRACE_INHERIT			(-1)
112 #define _POSIX_TRACE_LOG			(-1)
113 #define _POSIX_TYPED_MEMORY_OBJECTS		(-1)
114 #define _POSIX2_C_BIND				200112L
115 #define _POSIX2_C_DEV				(-1) /* need C99 utility */
116 #define _POSIX2_CHAR_TERM			1
117 #define _POSIX2_FORT_DEV			(-1) /* need fort77 utility */
118 #define _POSIX2_FORT_RUN			(-1) /* need asa utility */
119 #define _POSIX2_LOCALEDEF			(-1)
120 #define _POSIX2_PBS				(-1)
121 #define _POSIX2_PBS_ACCOUNTING			(-1)
122 #define _POSIX2_PBS_CHECKPOINT			(-1)
123 #define _POSIX2_PBS_LOCATE			(-1)
124 #define _POSIX2_PBS_MESSAGE			(-1)
125 #define _POSIX2_PBS_TRACK			(-1)
126 #define _POSIX2_SW_DEV				200112L
127 #define _POSIX2_UPE				200112L
128 #define _POSIX_V6_ILP32_OFF32			(-1)
129 #define _POSIX_V6_ILP32_OFFBIG			0
130 #define _POSIX_V6_LP64_OFF64			0
131 #define _POSIX_V6_LPBIG_OFFBIG			0
132 #define _POSIX_V7_ILP32_OFF32			(-1)
133 #define _POSIX_V7_ILP32_OFFBIG			0
134 #define _POSIX_V7_LP64_OFF64			0
135 #define _POSIX_V7_LPBIG_OFFBIG			0
136 
137 #define _XOPEN_CRYPT				1
138 #define _XOPEN_ENH_I18N				(-1) /* mandatory in XSI */
139 #define _XOPEN_LEGACY				(-1)
140 #define _XOPEN_REALTIME				(-1)
141 #define _XOPEN_REALTIME_THREADS			(-1)
142 #define _XOPEN_SHM				1
143 #define _XOPEN_STREAMS				(-1)
144 #define _XOPEN_UUCP				(-1)
145 #define _XOPEN_UNIX				(-1)
146 
147 /* Define the POSIX.2 version we target for compliance. */
148 #define _POSIX2_VERSION				200809L
149 
150 /* the sysconf(3) variable values are part of the ABI */
151 
152 /* configurable system variables */
153 #define	_SC_ARG_MAX		 1
154 #define	_SC_CHILD_MAX		 2
155 #define	_SC_CLK_TCK		 3
156 #define	_SC_NGROUPS_MAX		 4
157 #define	_SC_OPEN_MAX		 5
158 #define	_SC_JOB_CONTROL		 6
159 #define	_SC_SAVED_IDS		 7
160 #define	_SC_VERSION		 8
161 #define	_SC_BC_BASE_MAX		 9
162 #define	_SC_BC_DIM_MAX		10
163 #define	_SC_BC_SCALE_MAX	11
164 #define	_SC_BC_STRING_MAX	12
165 #define	_SC_COLL_WEIGHTS_MAX	13
166 #define	_SC_EXPR_NEST_MAX	14
167 #define	_SC_LINE_MAX		15
168 #define	_SC_RE_DUP_MAX		16
169 #define	_SC_2_VERSION		17
170 #define	_SC_2_C_BIND		18
171 #define	_SC_2_C_DEV		19
172 #define	_SC_2_CHAR_TERM		20
173 #define	_SC_2_FORT_DEV		21
174 #define	_SC_2_FORT_RUN		22
175 #define	_SC_2_LOCALEDEF		23
176 #define	_SC_2_SW_DEV		24
177 #define	_SC_2_UPE		25
178 #define	_SC_STREAM_MAX		26
179 #define	_SC_TZNAME_MAX		27
180 #define	_SC_PAGESIZE		28
181 #define	_SC_PAGE_SIZE		_SC_PAGESIZE	/* 1170 compatibility */
182 #define	_SC_FSYNC		29
183 #define	_SC_XOPEN_SHM		30
184 #define	_SC_SEM_NSEMS_MAX	31
185 #define	_SC_SEM_VALUE_MAX	32
186 #define	_SC_HOST_NAME_MAX	33
187 #define	_SC_MONOTONIC_CLOCK	34
188 #define	_SC_2_PBS		35
189 #define	_SC_2_PBS_ACCOUNTING	36
190 #define	_SC_2_PBS_CHECKPOINT	37
191 #define	_SC_2_PBS_LOCATE	38
192 #define	_SC_2_PBS_MESSAGE	39
193 #define	_SC_2_PBS_TRACK		40
194 #define	_SC_ADVISORY_INFO	41
195 #define	_SC_AIO_LISTIO_MAX	42
196 #define	_SC_AIO_MAX		43
197 #define	_SC_AIO_PRIO_DELTA_MAX	44
198 #define	_SC_ASYNCHRONOUS_IO	45
199 #define	_SC_ATEXIT_MAX		46
200 #define	_SC_BARRIERS		47
201 #define	_SC_CLOCK_SELECTION	48
202 #define	_SC_CPUTIME		49
203 #define	_SC_DELAYTIMER_MAX	50
204 #define	_SC_IOV_MAX		51
205 #define	_SC_IPV6		52
206 #define	_SC_MAPPED_FILES	53
207 #define	_SC_MEMLOCK		54
208 #define	_SC_MEMLOCK_RANGE	55
209 #define	_SC_MEMORY_PROTECTION	56
210 #define	_SC_MESSAGE_PASSING	57
211 #define	_SC_MQ_OPEN_MAX		58
212 #define	_SC_MQ_PRIO_MAX		59
213 #define	_SC_PRIORITIZED_IO	60
214 #define	_SC_PRIORITY_SCHEDULING	61
215 #define	_SC_RAW_SOCKETS		62
216 #define	_SC_READER_WRITER_LOCKS	63
217 #define	_SC_REALTIME_SIGNALS	64
218 #define	_SC_REGEXP		65
219 #define	_SC_RTSIG_MAX		66
220 #define	_SC_SEMAPHORES		67
221 #define	_SC_SHARED_MEMORY_OBJECTS 68
222 #define	_SC_SHELL		69
223 #define	_SC_SIGQUEUE_MAX	70
224 #define	_SC_SPAWN		71
225 #define	_SC_SPIN_LOCKS		72
226 #define	_SC_SPORADIC_SERVER	73
227 #define	_SC_SS_REPL_MAX		74
228 #define	_SC_SYNCHRONIZED_IO	75
229 #define	_SC_SYMLOOP_MAX		76
230 #define	_SC_THREAD_ATTR_STACKADDR 77
231 #define	_SC_THREAD_ATTR_STACKSIZE 78
232 #define	_SC_THREAD_CPUTIME	79
233 #define	_SC_THREAD_DESTRUCTOR_ITERATIONS 80
234 #define	_SC_THREAD_KEYS_MAX	81
235 #define	_SC_THREAD_PRIO_INHERIT	82
236 #define	_SC_THREAD_PRIO_PROTECT	83
237 #define	_SC_THREAD_PRIORITY_SCHEDULING 84
238 #define	_SC_THREAD_PROCESS_SHARED 85
239 #define	_SC_THREAD_ROBUST_PRIO_INHERIT 86
240 #define	_SC_THREAD_ROBUST_PRIO_PROTECT 87
241 #define	_SC_THREAD_SPORADIC_SERVER 88
242 #define	_SC_THREAD_STACK_MIN	89
243 #define	_SC_THREAD_THREADS_MAX	90
244 #define	_SC_THREADS		91
245 #define	_SC_TIMEOUTS		92
246 #define	_SC_TIMER_MAX		93
247 #define	_SC_TIMERS		94
248 #define	_SC_TRACE		95
249 #define	_SC_TRACE_EVENT_FILTER	96
250 #define	_SC_TRACE_EVENT_NAME_MAX 97
251 #define	_SC_TRACE_INHERIT	98
252 #define	_SC_TRACE_LOG		99
253 #define	_SC_GETGR_R_SIZE_MAX	100
254 #define	_SC_GETPW_R_SIZE_MAX	101
255 #define	_SC_LOGIN_NAME_MAX	102
256 #define	_SC_THREAD_SAFE_FUNCTIONS 103
257 #define	_SC_TRACE_NAME_MAX      104
258 #define	_SC_TRACE_SYS_MAX       105
259 #define	_SC_TRACE_USER_EVENT_MAX 106
260 #define	_SC_TTY_NAME_MAX	107
261 #define	_SC_TYPED_MEMORY_OBJECTS 108
262 #define	_SC_V6_ILP32_OFF32	109
263 #define	_SC_V6_ILP32_OFFBIG	110
264 #define	_SC_V6_LP64_OFF64	111
265 #define	_SC_V6_LPBIG_OFFBIG	112
266 #define	_SC_V7_ILP32_OFF32	113
267 #define	_SC_V7_ILP32_OFFBIG	114
268 #define	_SC_V7_LP64_OFF64	115
269 #define	_SC_V7_LPBIG_OFFBIG	116
270 #define	_SC_XOPEN_CRYPT		117
271 #define	_SC_XOPEN_ENH_I18N	118
272 #define	_SC_XOPEN_LEGACY	119
273 #define	_SC_XOPEN_REALTIME	120
274 #define	_SC_XOPEN_REALTIME_THREADS 121
275 #define	_SC_XOPEN_STREAMS	122
276 #define	_SC_XOPEN_UNIX		123
277 #define	_SC_XOPEN_UUCP		124
278 #define	_SC_XOPEN_VERSION	125
279 
280 #define	_SC_PHYS_PAGES		500
281 #define	_SC_AVPHYS_PAGES	501
282 #define	_SC_NPROCESSORS_CONF	502
283 #define	_SC_NPROCESSORS_ONLN	503
284 
285 /* configurable system strings */
286 #define	_CS_PATH				 1
287 #define	_CS_POSIX_V6_ILP32_OFF32_CFLAGS		 2
288 #define	_CS_POSIX_V6_ILP32_OFF32_LDFLAGS	 3
289 #define	_CS_POSIX_V6_ILP32_OFF32_LIBS		 4
290 #define	_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS	 5
291 #define	_CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS	 6
292 #define	_CS_POSIX_V6_ILP32_OFFBIG_LIBS		 7
293 #define	_CS_POSIX_V6_LP64_OFF64_CFLAGS		 8
294 #define	_CS_POSIX_V6_LP64_OFF64_LDFLAGS		 9
295 #define	_CS_POSIX_V6_LP64_OFF64_LIBS		10
296 #define	_CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS	11
297 #define	_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS	12
298 #define	_CS_POSIX_V6_LPBIG_OFFBIG_LIBS		13
299 #define	_CS_POSIX_V6_WIDTH_RESTRICTED_ENVS	14
300 #define	_CS_V6_ENV				15
301 #define	_CS_POSIX_V7_ILP32_OFF32_CFLAGS		16
302 #define	_CS_POSIX_V7_ILP32_OFF32_LDFLAGS	17
303 #define	_CS_POSIX_V7_ILP32_OFF32_LIBS		18
304 #define	_CS_POSIX_V7_ILP32_OFFBIG_CFLAGS	19
305 #define	_CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS	20
306 #define	_CS_POSIX_V7_ILP32_OFFBIG_LIBS		21
307 #define	_CS_POSIX_V7_LP64_OFF64_CFLAGS		22
308 #define	_CS_POSIX_V7_LP64_OFF64_LDFLAGS		23
309 #define	_CS_POSIX_V7_LP64_OFF64_LIBS		24
310 #define	_CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS	25
311 #define	_CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS	26
312 #define	_CS_POSIX_V7_LPBIG_OFFBIG_LIBS		27
313 #define	_CS_POSIX_V7_THREADS_CFLAGS		28
314 #define	_CS_POSIX_V7_THREADS_LDFLAGS		29
315 #define	_CS_POSIX_V7_WIDTH_RESTRICTED_ENVS	30
316 #define	_CS_V7_ENV				31
317 
318 #ifndef	_INTPTR_T_DEFINED_
319 #define	_INTPTR_T_DEFINED_
320 typedef	__intptr_t		intptr_t;
321 #endif
322 
323 __BEGIN_DECLS
324 __dead void	 _exit(int);
325 int	 access(const char *, int);
326 unsigned int alarm(unsigned int);
327 int	 chdir(const char *);
328 int	 chown(const char *, uid_t, gid_t);
329 int	 close(int);
330 int	 dup(int);
331 int	 dup2(int, int);
332 int	 execl(const char *, const char *, ...)
333 	    __attribute__((__sentinel__));
334 int	 execle(const char *, const char *, ...);
335 int	 execlp(const char *, const char *, ...)
336 	    __attribute__((__sentinel__));
337 int	 execv(const char *, char *const *);
338 int	 execve(const char *, char *const *, char *const *);
339 int	 execvp(const char *, char *const *);
340 #if __BSD_VISIBLE
341 int	 execvpe(const char *, char *const *, char *const *);
342 #endif
343 pid_t	 fork(void);
344 long	 fpathconf(int, int);
345 char	*getcwd(char *, size_t)
346 		__attribute__((__bounded__(__string__,1,2)));
347 gid_t	 getegid(void);
348 uid_t	 geteuid(void);
349 gid_t	 getgid(void);
350 int	 getgroups(int, gid_t *);
351 char	*getlogin(void);
352 pid_t	 getpgrp(void);
353 pid_t	 getpid(void);
354 pid_t	 getppid(void);
355 uid_t	 getuid(void);
356 int	 isatty(int);
357 int	 link(const char *, const char *);
358 off_t	 lseek(int, off_t, int);
359 long	 pathconf(const char *, int);
360 int	 pause(void);
361 int	 pipe(int *);
362 ssize_t	 read(int, void *, size_t)
363 		__attribute__((__bounded__(__buffer__,2,3)));
364 int	 rmdir(const char *);
365 int	 setgid(gid_t);
366 int	 setuid(uid_t);
367 unsigned int sleep(unsigned int);
368 long	 sysconf(int);
369 pid_t	 tcgetpgrp(int);
370 int	 tcsetpgrp(int, pid_t);
371 char	*ttyname(int);
372 int	 unlink(const char *);
373 ssize_t	 write(int, const void *, size_t)
374 		__attribute__((__bounded__(__buffer__,2,3)));
375 
376 #if __POSIX_VISIBLE || __XPG_VISIBLE >= 300
377 pid_t	 setsid(void);
378 int	 setpgid(pid_t, pid_t);
379 #endif
380 
381 #if __POSIX_VISIBLE >= 199209 || __XPG_VISIBLE
382 size_t	 confstr(int, char *, size_t)
383 		__attribute__((__bounded__(__string__,2,3)));
384 #ifndef _GETOPT_DEFINED_
385 #define _GETOPT_DEFINED_
386 int	 getopt(int, char * const *, const char *);
387 extern	 char *optarg;			/* getopt(3) external variables */
388 extern	 int opterr, optind, optopt, optreset;
389 #endif /* _GETOPT_DEFINED_ */
390 #endif
391 
392 #if __POSIX_VISIBLE >= 199506 || __XPG_VISIBLE
393 int	 fsync(int);
394 int	 ftruncate(int, off_t);
395 int	 getlogin_r(char *, size_t)
396 		__attribute__((__bounded__(__string__,1,2)));
397 ssize_t	 readlink(const char * __restrict, char * __restrict, size_t)
398 		__attribute__ ((__bounded__(__string__,2,3)));
399 #endif
400 #if __POSIX_VISIBLE >= 199506
401 int	 fdatasync(int);
402 #endif
403 
404 #if __XPG_VISIBLE || __BSD_VISIBLE
405 char	*crypt(const char *, const char *);
406 int	 fchdir(int);
407 int	 fchown(int, uid_t, gid_t);
408 long	 gethostid(void);
409 char	*getwd(char *)
410 		__attribute__ ((__bounded__(__minbytes__,1,1024)));
411 int	 lchown(const char *, uid_t, gid_t);
412 int	 mkstemp(char *);
413 char	*mktemp(char *);
414 int	 nice(int);
415 int	 setregid(gid_t, gid_t);
416 int	 setreuid(uid_t, uid_t);
417 void	 swab(const void *__restrict, void *__restrict, ssize_t);
418 void	 sync(void);
419 int	 truncate(const char *, off_t);
420 useconds_t	 ualarm(useconds_t, useconds_t);
421 int	 usleep(useconds_t);
422 pid_t	 vfork(void);
423 #endif
424 
425 #if __POSIX_VISIBLE >= 200809 || __XPG_VISIBLE >= 420
426 pid_t	 getpgid(pid_t);
427 pid_t	 getsid(pid_t);
428 #endif
429 
430 #if __XPG_VISIBLE >= 500
431 ssize_t  pread(int, void *, size_t, off_t)
432 		__attribute__((__bounded__(__buffer__,2,3)));
433 ssize_t  pwrite(int, const void *, size_t, off_t)
434 		__attribute__((__bounded__(__buffer__,2,3)));
435 int	 ttyname_r(int, char *, size_t)
436 	    __attribute__((__bounded__(__string__,2,3)));
437 #endif
438 
439 #if __BSD_VISIBLE ||  __XPG_VISIBLE <= 500
440 /* Interfaces withdrawn by X/Open Issue 5 Version 0 */
441 int	 brk(void *);
442 int	 chroot(const char *);
443 int	 getdtablesize(void);
444 int	 getpagesize(void);
445 char	*getpass(const char *);
446 void	*sbrk(int);
447 #endif
448 
449 #if __POSIX_VISIBLE >= 200112 || __XPG_VISIBLE >= 420
450 int     lockf(int, int, off_t);
451 #endif
452 
453 #if __POSIX_VISIBLE >= 200112 || __XPG_VISIBLE >= 420 || __BSD_VISIBLE
454 int	 symlink(const char *, const char *);
455 int	 gethostname(char *, size_t)
456 		__attribute__ ((__bounded__(__string__,1,2)));
457 int	 setegid(gid_t);
458 int	 seteuid(uid_t);
459 #endif
460 
461 #if __POSIX_VISIBLE >= 200809
462 int	faccessat(int, const char *, int, int);
463 int	fchownat(int, const char *, uid_t, gid_t, int);
464 int	linkat(int, const char *, int, const char *, int);
465 ssize_t	readlinkat(int, const char *, char *, size_t)
466 		__attribute__ ((__bounded__(__string__,3,4)));
467 int	symlinkat(const char *, int, const char *);
468 int	unlinkat(int, const char *, int);
469 #endif
470 
471 #if __BSD_VISIBLE
472 int	dup3(int, int, int);
473 int	pipe2(int [2], int);
474 #endif
475 
476 #if __BSD_VISIBLE
477 int	 acct(const char *);
478 int	 closefrom(int);
479 int	 crypt_checkpass(const char *, const char *);
480 int	 crypt_newhash(const char *, const char *, char *, size_t);
481 void	 endusershell(void);
482 char	*fflagstostr(u_int32_t);
483 int	 getdomainname(char *, size_t)
484 		__attribute__ ((__bounded__(__string__,1,2)));
485 int	 getdtablecount(void);
486 int	 getgrouplist(const char *, gid_t, gid_t *, int *);
487 mode_t	 getmode(const void *, mode_t);
488 int	 getresgid(gid_t *, gid_t *, gid_t *);
489 int	 getresuid(uid_t *, uid_t *, uid_t *);
490 pid_t	 getthrid(void);
491 int	 getthrname(pid_t, char *, size_t);
492 char	*getusershell(void);
493 int	 initgroups(const char *, gid_t);
494 int	 issetugid(void);
495 char	*mkdtemp(char *);
496 int	 mkstemps(char *, int);
497 int	 nfssvc(int, void *);
498 int	 profil(char *, size_t, unsigned long, unsigned int)
499 		__attribute__ ((__bounded__(__string__,1,2)));
500 int	 quotactl(const char *, int, int, char *);
501 int	 rcmd(char **, int, const char *,
502 	    const char *, const char *, int *);
503 int	 rcmd_af(char **, int, const char *,
504 	    const char *, const char *, int *, int);
505 int	 rcmdsh(char **, int, const char *,
506 	    const char *, const char *, char *);
507 int	 reboot(int);
508 int	 revoke(const char *);
509 int	 rresvport(int *);
510 int	 rresvport_af(int *, int);
511 int	 ruserok(const char *, int, const char *, const char *);
512 int	 setdomainname(const char *, size_t);
513 int	 setgroups(int, const gid_t *);
514 int	 sethostid(long);
515 int	 sethostname(const char *, size_t);
516 int	 setlogin(const char *);
517 void	*setmode(const char *);
518 int	 setpgrp(pid_t _pid, pid_t _pgrp);	/* BSD compat version */
519 int	 setresgid(gid_t, gid_t, gid_t);
520 int	 setresuid(uid_t, uid_t, uid_t);
521 int	 setthrname(pid_t, const char *);
522 void	 setusershell(void);
523 int	 strtofflags(char **, u_int32_t *, u_int32_t *);
524 int	 swapctl(int cmd, const void *arg, int misc);
525 int	 getentropy(void *, size_t);
526 int	 pledge(const char *, const char *);
527 int	 unveil(const char *, const char *);
528 pid_t	 __tfork_thread(const struct __tfork *, size_t, void (*)(void *),
529 	    void *);
530 #endif /* __BSD_VISIBLE */
531 __END_DECLS
532 
533 #endif /* !_UNISTD_H_ */
534