include/unistd.h

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