include/unistd.h

   1 /*      $OpenBSD: unistd.h,v 1.79 2013/06/17 19:11:54 guenther 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/types.h>
  39 #include <sys/unistd.h>
  40
  41 #define STDIN_FILENO    0       /* standard input file descriptor */
  42 #define STDOUT_FILENO   1       /* standard output file descriptor */
  43 #define STDERR_FILENO   2       /* standard error file descriptor */
  44
  45 #if __XPG_VISIBLE || __POSIX_VISIBLE >= 200112
  46 #define F_ULOCK         0       /* unlock locked section */
  47 #define F_LOCK          1       /* lock a section for exclusive use */
  48 #define F_TLOCK         2       /* test and lock a section for exclusive use */
  49 #define F_TEST          3       /* test a section for locks by other procs */
  50 #endif
  51
  52 /*
  53  * POSIX options and option groups we unconditionally do or don't
  54  * implement.  Please keep this list in alphabetical order.
  55  *
  56  * Anything which is defined as zero below **must** have an
  57  * implementation for the corresponding sysconf() which is able to
  58  * determine conclusively whether or not the feature is supported.
  59  * Anything which is defined as other than -1 below **must** have
  60  * complete headers, types, and function declarations as specified by
  61  * the POSIX standard; however, if the relevant sysconf() function
  62  * returns -1, the functions may be stubbed out.
  63  */
  64 #define _POSIX_ADVISORY_INFO                    (-1)
  65 #define _POSIX_ASYNCHRONOUS_IO                  (-1)
  66 #define _POSIX_BARRIERS                         200112L
  67 #define _POSIX_CHOWN_RESTRICTED                 1
  68 #define _POSIX_CLOCK_SELECTION                  (-1)
  69 #define _POSIX_CPUTIME                          200809L
  70 #define _POSIX_FSYNC                            200112L
  71 #define _POSIX_IPV6                             0
  72 #define _POSIX_JOB_CONTROL                      1
  73 #define _POSIX_MAPPED_FILES                     200112L
  74 #define _POSIX_MEMLOCK                          200112L
  75 #define _POSIX_MEMLOCK_RANGE                    200112L
  76 #define _POSIX_MEMORY_PROTECTION                200112L
  77 #define _POSIX_MESSAGE_PASSING                  (-1)
  78 #define _POSIX_MONOTONIC_CLOCK                  200112L
  79 #define _POSIX_NO_TRUNC                         1
  80 #define _POSIX_PRIORITIZED_IO                   (-1)
  81 #define _POSIX_PRIORITY_SCHEDULING              (-1)
  82 #define _POSIX_RAW_SOCKETS                      200112L
  83 #define _POSIX_READER_WRITER_LOCKS              200112L
  84 #define _POSIX_REALTIME_SIGNALS                 (-1)
  85 #define _POSIX_REGEXP                           1
  86 #define _POSIX_SAVED_IDS                        1
  87 #define _POSIX_SEMAPHORES                       200112L
  88 #define _POSIX_SHARED_MEMORY_OBJECTS            200809L
  89 #define _POSIX_SHELL                            1
  90 #define _POSIX_SPAWN                            200112L
  91 #define _POSIX_SPIN_LOCKS                       200112L
  92 #define _POSIX_SPORADIC_SERVER                  (-1)
  93 #define _POSIX_SYNCHRONIZED_IO                  (-1)
  94 #define _POSIX_THREAD_ATTR_STACKADDR            200112L
  95 #define _POSIX_THREAD_ATTR_STACKSIZE            200112L
  96 #define _POSIX_THREAD_CPUTIME                   200809L
  97 #define _POSIX_THREAD_PRIO_INHERIT              (-1)
  98 #define _POSIX_THREAD_PRIO_PROTECT              (-1)
  99 #define _POSIX_THREAD_PRIORITY_SCHEDULING       (-1)
 100 #define _POSIX_THREAD_PROCESS_SHARED            (-1)
 101 #define _POSIX_THREAD_ROBUST_PRIO_INHERIT       (-1)
 102 #define _POSIX_THREAD_ROBUST_PRIO_PROTECT       (-1)
 103 #define _POSIX_THREAD_SAFE_FUNCTIONS            200112L
 104 #define _POSIX_THREAD_SPORADIC_SERVER           (-1)
 105 #define _POSIX_THREADS                          200112L
 106 #define _POSIX_TIMEOUTS                         200112L
 107 #define _POSIX_TIMERS                           (-1)
 108 #define _POSIX_TRACE                            (-1)
 109 #define _POSIX_TRACE_EVENT_FILTER               (-1)
 110 #define _POSIX_TRACE_INHERIT                    (-1)
 111 #define _POSIX_TRACE_LOG                        (-1)
 112 #define _POSIX_TYPED_MEMORY_OBJECTS             (-1)
 113 #define _POSIX2_C_BIND                          200112L
 114 #define _POSIX2_C_DEV                           (-1) /* need C99 utility */
 115 #define _POSIX2_CHAR_TERM                       1
 116 #define _POSIX2_FORT_DEV                        (-1) /* need fort77 utility */
 117 #define _POSIX2_FORT_RUN                        200112L
 118 #define _POSIX2_LOCALEDEF                       (-1)
 119 #define _POSIX2_PBS                             (-1)
 120 #define _POSIX2_PBS_ACCOUNTING                  (-1)
 121 #define _POSIX2_PBS_CHECKPOINT                  (-1)
 122 #define _POSIX2_PBS_LOCATE                      (-1)
 123 #define _POSIX2_PBS_MESSAGE                     (-1)
 124 #define _POSIX2_PBS_TRACK                       (-1)
 125 #define _POSIX2_SW_DEV                          200112L
 126 #define _POSIX2_UPE                             200112L
 127 #define _POSIX_V6_ILP32_OFF32                   (-1)
 128 #define _POSIX_V6_ILP32_OFFBIG                  0
 129 #define _POSIX_V6_LP64_OFF64                    0
 130 #define _POSIX_V6_LPBIG_OFFBIG                  0
 131 #define _POSIX_V7_ILP32_OFF32                   (-1)
 132 #define _POSIX_V7_ILP32_OFFBIG                  0
 133 #define _POSIX_V7_LP64_OFF64                    0
 134 #define _POSIX_V7_LPBIG_OFFBIG                  0
 135
 136 #define _XOPEN_CRYPT                            1
 137 #define _XOPEN_ENH_I18N                         (-1) /* mandatory in XSI */
 138 #define _XOPEN_LEGACY                           (-1)
 139 #define _XOPEN_REALTIME                         (-1)
 140 #define _XOPEN_REALTIME_THREADS                 (-1)
 141 #define _XOPEN_SHM                              1
 142 #define _XOPEN_STREAMS                          (-1)
 143 #define _XOPEN_UUCP                             (-1)
 144 #define _XOPEN_UNIX                             (-1)
 145
 146 /* Define the POSIX.2 version we target for compliance. */
 147 #define _POSIX2_VERSION                         199212L
 148
 149 /* the sysconf(3) variable values are part of the ABI */
 150
 151 /* configurable system variables */
 152 #define _SC_ARG_MAX              1
 153 #define _SC_CHILD_MAX            2
 154 #define _SC_CLK_TCK              3
 155 #define _SC_NGROUPS_MAX          4
 156 #define _SC_OPEN_MAX             5
 157 #define _SC_JOB_CONTROL          6
 158 #define _SC_SAVED_IDS            7
 159 #define _SC_VERSION              8
 160 #define _SC_BC_BASE_MAX          9
 161 #define _SC_BC_DIM_MAX          10
 162 #define _SC_BC_SCALE_MAX        11
 163 #define _SC_BC_STRING_MAX       12
 164 #define _SC_COLL_WEIGHTS_MAX    13
 165 #define _SC_EXPR_NEST_MAX       14
 166 #define _SC_LINE_MAX            15
 167 #define _SC_RE_DUP_MAX          16
 168 #define _SC_2_VERSION           17
 169 #define _SC_2_C_BIND            18
 170 #define _SC_2_C_DEV             19
 171 #define _SC_2_CHAR_TERM         20
 172 #define _SC_2_FORT_DEV          21
 173 #define _SC_2_FORT_RUN          22
 174 #define _SC_2_LOCALEDEF         23
 175 #define _SC_2_SW_DEV            24
 176 #define _SC_2_UPE               25
 177 #define _SC_STREAM_MAX          26
 178 #define _SC_TZNAME_MAX          27
 179 #define _SC_PAGESIZE            28
 180 #define _SC_PAGE_SIZE           _SC_PAGESIZE    /* 1170 compatibility */
 181 #define _SC_FSYNC               29
 182 #define _SC_XOPEN_SHM           30
 183 #define _SC_SEM_NSEMS_MAX       31
 184 #define _SC_SEM_VALUE_MAX       32
 185 #define _SC_HOST_NAME_MAX       33
 186 #define _SC_MONOTONIC_CLOCK     34
 187 #define _SC_2_PBS               35
 188 #define _SC_2_PBS_ACCOUNTING    36
 189 #define _SC_2_PBS_CHECKPOINT    37
 190 #define _SC_2_PBS_LOCATE        38
 191 #define _SC_2_PBS_MESSAGE       39
 192 #define _SC_2_PBS_TRACK         40
 193 #define _SC_ADVISORY_INFO       41
 194 #define _SC_AIO_LISTIO_MAX      42
 195 #define _SC_AIO_MAX             43
 196 #define _SC_AIO_PRIO_DELTA_MAX  44
 197 #define _SC_ASYNCHRONOUS_IO     45
 198 #define _SC_ATEXIT_MAX          46
 199 #define _SC_BARRIERS            47
 200 #define _SC_CLOCK_SELECTION     48
 201 #define _SC_CPUTIME             49
 202 #define _SC_DELAYTIMER_MAX      50
 203 #define _SC_IOV_MAX             51
 204 #define _SC_IPV6                52
 205 #define _SC_MAPPED_FILES        53
 206 #define _SC_MEMLOCK             54
 207 #define _SC_MEMLOCK_RANGE       55
 208 #define _SC_MEMORY_PROTECTION   56
 209 #define _SC_MESSAGE_PASSING     57
 210 #define _SC_MQ_OPEN_MAX         58
 211 #define _SC_MQ_PRIO_MAX         59
 212 #define _SC_PRIORITIZED_IO      60
 213 #define _SC_PRIORITY_SCHEDULING 61
 214 #define _SC_RAW_SOCKETS         62
 215 #define _SC_READER_WRITER_LOCKS 63
 216 #define _SC_REALTIME_SIGNALS    64
 217 #define _SC_REGEXP              65
 218 #define _SC_RTSIG_MAX           66
 219 #define _SC_SEMAPHORES          67
 220 #define _SC_SHARED_MEMORY_OBJECTS 68
 221 #define _SC_SHELL               69
 222 #define _SC_SIGQUEUE_MAX        70
 223 #define _SC_SPAWN               71
 224 #define _SC_SPIN_LOCKS          72
 225 #define _SC_SPORADIC_SERVER     73
 226 #define _SC_SS_REPL_MAX         74
 227 #define _SC_SYNCHRONIZED_IO     75
 228 #define _SC_SYMLOOP_MAX         76
 229 #define _SC_THREAD_ATTR_STACKADDR 77
 230 #define _SC_THREAD_ATTR_STACKSIZE 78
 231 #define _SC_THREAD_CPUTIME      79
 232 #define _SC_THREAD_DESTRUCTOR_ITERATIONS 80
 233 #define _SC_THREAD_KEYS_MAX     81
 234 #define _SC_THREAD_PRIO_INHERIT 82
 235 #define _SC_THREAD_PRIO_PROTECT 83
 236 #define _SC_THREAD_PRIORITY_SCHEDULING 84
 237 #define _SC_THREAD_PROCESS_SHARED 85
 238 #define _SC_THREAD_ROBUST_PRIO_INHERIT 86
 239 #define _SC_THREAD_ROBUST_PRIO_PROTECT 87
 240 #define _SC_THREAD_SPORADIC_SERVER 88
 241 #define _SC_THREAD_STACK_MIN    89
 242 #define _SC_THREAD_THREADS_MAX  90
 243 #define _SC_THREADS             91
 244 #define _SC_TIMEOUTS            92
 245 #define _SC_TIMER_MAX           93
 246 #define _SC_TIMERS              94
 247 #define _SC_TRACE               95
 248 #define _SC_TRACE_EVENT_FILTER  96
 249 #define _SC_TRACE_EVENT_NAME_MAX 97
 250 #define _SC_TRACE_INHERIT       98
 251 #define _SC_TRACE_LOG           99
 252 #define _SC_GETGR_R_SIZE_MAX    100
 253 #define _SC_GETPW_R_SIZE_MAX    101
 254 #define _SC_LOGIN_NAME_MAX      102
 255 #define _SC_THREAD_SAFE_FUNCTIONS 103
 256 #define _SC_TRACE_NAME_MAX      104
 257 #define _SC_TRACE_SYS_MAX       105
 258 #define _SC_TRACE_USER_EVENT_MAX 106
 259 #define _SC_TTY_NAME_MAX        107
 260 #define _SC_TYPED_MEMORY_OBJECTS 108
 261 #define _SC_V6_ILP32_OFF32      109
 262 #define _SC_V6_ILP32_OFFBIG     110
 263 #define _SC_V6_LP64_OFF64       111
 264 #define _SC_V6_LPBIG_OFFBIG     112
 265 #define _SC_V7_ILP32_OFF32      113
 266 #define _SC_V7_ILP32_OFFBIG     114
 267 #define _SC_V7_LP64_OFF64       115
 268 #define _SC_V7_LPBIG_OFFBIG     116
 269 #define _SC_XOPEN_CRYPT         117
 270 #define _SC_XOPEN_ENH_I18N      118
 271 #define _SC_XOPEN_LEGACY        119
 272 #define _SC_XOPEN_REALTIME      120
 273 #define _SC_XOPEN_REALTIME_THREADS 121
 274 #define _SC_XOPEN_STREAMS       122
 275 #define _SC_XOPEN_UNIX          123
 276 #define _SC_XOPEN_UUCP          124
 277 #define _SC_XOPEN_VERSION       125
 278
 279 #define _SC_PHYS_PAGES          500
 280 #define _SC_AVPHYS_PAGES        501
 281 #define _SC_NPROCESSORS_CONF    502
 282 #define _SC_NPROCESSORS_ONLN    503
 283
 284 /* configurable system strings */
 285 #define _CS_PATH                                 1
 286 #define _CS_POSIX_V6_ILP32_OFF32_CFLAGS          2
 287 #define _CS_POSIX_V6_ILP32_OFF32_LDFLAGS         3
 288 #define _CS_POSIX_V6_ILP32_OFF32_LIBS            4
 289 #define _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS         5
 290 #define _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS        6
 291 #define _CS_POSIX_V6_ILP32_OFFBIG_LIBS           7
 292 #define _CS_POSIX_V6_LP64_OFF64_CFLAGS           8
 293 #define _CS_POSIX_V6_LP64_OFF64_LDFLAGS          9
 294 #define _CS_POSIX_V6_LP64_OFF64_LIBS            10
 295 #define _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS        11
 296 #define _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS       12
 297 #define _CS_POSIX_V6_LPBIG_OFFBIG_LIBS          13
 298 #define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS      14
 299 #define _CS_V6_ENV                              15
 300 #define _CS_POSIX_V7_ILP32_OFF32_CFLAGS         16
 301 #define _CS_POSIX_V7_ILP32_OFF32_LDFLAGS        17
 302 #define _CS_POSIX_V7_ILP32_OFF32_LIBS           18
 303 #define _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS        19
 304 #define _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS       20
 305 #define _CS_POSIX_V7_ILP32_OFFBIG_LIBS          21
 306 #define _CS_POSIX_V7_LP64_OFF64_CFLAGS          22
 307 #define _CS_POSIX_V7_LP64_OFF64_LDFLAGS         23
 308 #define _CS_POSIX_V7_LP64_OFF64_LIBS            24
 309 #define _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS        25
 310 #define _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS       26
 311 #define _CS_POSIX_V7_LPBIG_OFFBIG_LIBS          27
 312 #define _CS_POSIX_V7_THREADS_CFLAGS             28
 313 #define _CS_POSIX_V7_THREADS_LDFLAGS            29
 314 #define _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS      30
 315 #define _CS_V7_ENV                              31
 316
 317
 318 __BEGIN_DECLS
 319 __dead void      _exit(int);
 320 int      access(const char *, int);
 321 unsigned int alarm(unsigned int);
 322 int      chdir(const char *);
 323 int      chown(const char *, uid_t, gid_t);
 324 int      close(int);
 325 int      dup(int);
 326 int      dup2(int, int);
 327 int      execl(const char *, const char *, ...)
 328             __attribute__((sentinel));
 329 int      execle(const char *, const char *, ...);
 330 int      execlp(const char *, const char *, ...)
 331             __attribute__((sentinel));
 332 int      execv(const char *, char *const *);
 333 int      execve(const char *, char *const *, char *const *);
 334 int      execvp(const char *, char *const *);
 335 #if __BSD_VISIBLE
 336 int      execvpe(const char *, char *const *, char *const *);
 337 #endif
 338 pid_t    fork(void);
 339 long     fpathconf(int, int);
 340 char    *getcwd(char *, size_t)
 341                 __attribute__((__bounded__(__string__,1,2)));
 342 gid_t    getegid(void);
 343 uid_t    geteuid(void);
 344 gid_t    getgid(void);
 345 int      getgroups(int, gid_t *);
 346 char    *getlogin(void);
 347 pid_t    getpgrp(void);
 348 pid_t    getpid(void);
 349 pid_t    getppid(void);
 350 uid_t    getuid(void);
 351 int      isatty(int);
 352 int      link(const char *, const char *);
 353 off_t    lseek(int, off_t, int);
 354 long     pathconf(const char *, int);
 355 int      pause(void);
 356 int      pipe(int *);
 357 ssize_t  read(int, void *, size_t)
 358                 __attribute__((__bounded__(__buffer__,2,3)));
 359 int      rmdir(const char *);
 360 int      setgid(gid_t);
 361 int      setuid(uid_t);
 362 unsigned int sleep(unsigned int);
 363 long     sysconf(int);
 364 pid_t    tcgetpgrp(int);
 365 int      tcsetpgrp(int, pid_t);
 366 char    *ttyname(int);
 367 int      unlink(const char *);
 368 ssize_t  write(int, const void *, size_t)
 369                 __attribute__((__bounded__(__buffer__,2,3)));
 370
 371 #if __POSIX_VISIBLE || __XPG_VISIBLE >= 300
 372 pid_t    setsid(void);
 373 int      setpgid(pid_t, pid_t);
 374 #endif
 375
 376 #if __POSIX_VISIBLE >= 199209 || __XPG_VISIBLE
 377 size_t   confstr(int, char *, size_t)
 378                 __attribute__((__bounded__(__string__,2,3)));
 379 #ifndef _GETOPT_DEFINED_
 380 #define _GETOPT_DEFINED_
 381 int      getopt(int, char * const *, const char *);
 382 extern   char *optarg;                  /* getopt(3) external variables */
 383 extern   int opterr, optind, optopt, optreset;
 384 /* XXX - getsubopt does not belong here */
 385 int      getsubopt(char **, char * const *, char **);
 386 extern   char *suboptarg;               /* getsubopt(3) external variable */
 387 #endif /* _GETOPT_DEFINED_ */
 388 #endif
 389
 390 #if __POSIX_VISIBLE >= 199506 || __XPG_VISIBLE
 391 int      fsync(int);
 392 int      ftruncate(int, off_t);
 393 int      getlogin_r(char *, size_t)
 394                 __attribute__((__bounded__(__string__,1,2)));
 395 #endif
 396 #if __POSIX_VISIBLE >= 199506
 397 int      fdatasync(int);
 398 #endif
 399
 400 #if __XPG_VISIBLE || __BSD_VISIBLE
 401 char    *crypt(const char *, const char *);
 402 int      encrypt(char *, int);
 403 int      fchdir(int);
 404 int      fchown(int, uid_t, gid_t);
 405 long     gethostid(void);
 406 char    *getwd(char *)
 407                 __attribute__ ((__bounded__(__minbytes__,1,1024)));
 408 int      lchown(const char *, uid_t, gid_t);
 409 int      mkstemp(char *);
 410 char    *mktemp(char *);
 411 int      nice(int);
 412 int      readlink(const char *, char *, size_t)
 413                 __attribute__ ((__bounded__(__string__,2,3)));
 414 int      setkey(const char *);
 415 int      setpgrp(pid_t pid, pid_t pgrp);        /* obsoleted by setpgid() */
 416 int      setregid(gid_t, gid_t);
 417 int      setreuid(uid_t, uid_t);
 418 void     swab(const void *, void *, size_t);
 419 void     sync(void);
 420 int      truncate(const char *, off_t);
 421 unsigned int     ualarm(unsigned int, unsigned int);
 422 int      usleep(useconds_t);
 423 pid_t    vfork(void);
 424 #endif
 425
 426 #if __POSIX_VISIBLE >= 200809 || __XPG_VISIBLE >= 420
 427 pid_t    getpgid(pid_t);
 428 pid_t    getsid(pid_t);
 429 #endif
 430
 431 #if __XPG_VISIBLE >= 500
 432 ssize_t  pread(int, void *, size_t, off_t);
 433 ssize_t  pwrite(int, const void *, size_t, off_t);
 434 int      ttyname_r(int, char *, size_t)
 435             __attribute__((__bounded__(__string__,2,3)));
 436 #endif
 437
 438 #if __BSD_VISIBLE ||  __XPG_VISIBLE <= 500
 439 /* Interfaces withdrawn by X/Open Issue 5 Version 0 */
 440 int      brk(void *);
 441 int      chroot(const char *);
 442 int      getdtablesize(void);
 443 int      getpagesize(void);
 444 char    *getpass(const char *);
 445 void    *sbrk(int);
 446 #endif
 447
 448 #if __POSIX_VISIBLE >= 200112 || __XPG_VISIBLE >= 420
 449 int     lockf(int, int, off_t);
 450 #endif
 451
 452 #if __POSIX_VISIBLE >= 200112 || __XPG_VISIBLE >= 420 || __BSD_VISIBLE
 453 int      symlink(const char *, const char *);
 454 int      gethostname(char *, size_t)
 455                 __attribute__ ((__bounded__(__string__,1,2)));
 456 int      setegid(gid_t);
 457 int      seteuid(uid_t);
 458 #endif
 459
 460 #if __POSIX_VISIBLE >= 200809
 461 int     faccessat(int, const char *, int, int);
 462 int     fchownat(int, const char *, uid_t, gid_t, int);
 463 int     linkat(int, const char *, int, const char *, int);
 464 ssize_t readlinkat(int, const char *, char *, size_t);
 465 int     symlinkat(const char *, int, const char *);
 466 int     unlinkat(int, const char *, int);
 467 #endif
 468
 469 #if __BSD_VISIBLE
 470 int      acct(const char *);
 471 int      closefrom(int);
 472 int      des_cipher(const char *, char *, int32_t, int);
 473 int      des_setkey(const char *);
 474 void     endusershell(void);
 475 int      exect(const char *, char * const *, char * const *);
 476 char    *fflagstostr(u_int32_t);
 477 int      getdomainname(char *, size_t)
 478                 __attribute__ ((__bounded__(__string__,1,2)));
 479 int      getdtablecount(void);
 480 int      getgrouplist(const char *, gid_t, gid_t *, int *);
 481 mode_t   getmode(const void *, mode_t);
 482 int      getresgid(gid_t *, gid_t *, gid_t *);
 483 int      getresuid(uid_t *, uid_t *, uid_t *);
 484 char    *getusershell(void);
 485 int      initgroups(const char *, gid_t);
 486 int      iruserok(u_int32_t, int, const char *, const char *);
 487 int      iruserok_sa(const void *, int, int, const char *, const char *);
 488 int      issetugid(void);
 489 char    *mkdtemp(char *);
 490 int      mkstemps(char *, int);
 491 int      nfssvc(int, void *);
 492 int      profil(char *, size_t, unsigned long, unsigned int)
 493                 __attribute__ ((__bounded__(__string__,1,2)));
 494 int      quotactl(const char *, int, int, char *);
 495 int      rcmd(char **, int, const char *,
 496             const char *, const char *, int *);
 497 int      rcmd_af(char **, int, const char *,
 498             const char *, const char *, int *, int);
 499 int      rcmdsh(char **, int, const char *,
 500             const char *, const char *, char *);
 501 char    *re_comp(const char *);
 502 int      re_exec(const char *);
 503 int      reboot(int);
 504 int      revoke(const char *);
 505 int      rresvport(int *);
 506 int      rresvport_af(int *, int);
 507 int      ruserok(const char *, int, const char *, const char *);
 508 #ifndef _SELECT_DEFINED_
 509 #define _SELECT_DEFINED_
 510 struct timeval;
 511 int      select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
 512 #endif
 513 int      setdomainname(const char *, size_t);
 514 int      setgroups(int, const gid_t *);
 515 int      sethostid(long);
 516 int      sethostname(const char *, size_t);
 517 int      setlogin(const char *);
 518 void    *setmode(const char *);
 519 int      setresgid(gid_t, gid_t, gid_t);
 520 int      setresuid(uid_t, uid_t, uid_t);
 521 int      setrgid(gid_t);
 522 int      setruid(uid_t);
 523 void     setusershell(void);
 524 int      strtofflags(char **, u_int32_t *, u_int32_t *);
 525 int      swapctl(int cmd, const void *arg, int misc);
 526 int      syscall(int, ...);
 527 pid_t    __tfork_thread(const struct __tfork *, size_t, void (*)(void *),
 528             void *);
 529 #endif /* __BSD_VISIBLE */
 530 __END_DECLS
 531
 532 #endif /* !_UNISTD_H_ */