include/unistd.h

   1 /*      $NetBSD: unistd.h,v 1.125 2011/01/19 19:21:29 christos Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1998, 1999, 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Klaus Klein.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (c) 1991, 1993, 1994
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)unistd.h    8.12 (Berkeley) 4/27/95
  61  */
  62
  63 #ifndef _UNISTD_H_
  64 #define _UNISTD_H_
  65
  66 #include <machine/ansi.h>
  67 #include <machine/int_types.h>
  68 #include <sys/cdefs.h>
  69 #include <sys/featuretest.h>
  70 #include <sys/types.h>
  71 #include <sys/unistd.h>
  72
  73 #if _FORTIFY_SOURCE > 0
  74 #include <ssp/unistd.h>
  75 #endif
  76
  77 /*
  78  * IEEE Std 1003.1-90
  79  */
  80 #define STDIN_FILENO    0       /* standard input file descriptor */
  81 #define STDOUT_FILENO   1       /* standard output file descriptor */
  82 #define STDERR_FILENO   2       /* standard error file descriptor */
  83
  84 #include <sys/null.h>
  85
  86 __BEGIN_DECLS
  87 __dead   void _exit(int);
  88 int      access(const char *, int);
  89 unsigned int alarm(unsigned int);
  90 int      chdir(const char *);
  91 #if !defined(__minix) && (defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE))
  92 int     chown(const char *, uid_t, gid_t) __RENAME(__posix_chown);
  93 #else
  94 int     chown(const char *, uid_t, gid_t);
  95 #endif /* defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) */
  96 int      close(int);
  97 size_t   confstr(int, char *, size_t);
  98 #ifndef __CUSERID_DECLARED
  99 #define __CUSERID_DECLARED
 100 /* also declared in stdio.h */
 101 char    *cuserid(char *);       /* obsolete */
 102 #endif /* __CUSERID_DECLARED */
 103 int      dup(int);
 104 int      dup2(int, int);
 105 int      execl(const char *, const char *, ...);
 106 int      execle(const char *, const char *, ...);
 107 int      execlp(const char *, const char *, ...);
 108 int      execv(const char *, char * const *);
 109 int      execve(const char *, char * const *, char * const *);
 110 int      execvp(const char *, char * const *);
 111 pid_t    fork(void);
 112 long     fpathconf(int, int);
 113 #if __SSP_FORTIFY_LEVEL == 0
 114 char    *getcwd(char *, size_t);
 115 #endif
 116 gid_t    getegid(void);
 117 uid_t    geteuid(void);
 118 gid_t    getgid(void);
 119 int      getgroups(int, gid_t []);
 120 __aconst char *getlogin(void);
 121 int      getlogin_r(char *, size_t);
 122 pid_t    getpgrp(void);
 123 pid_t    getpid(void);
 124 pid_t    getppid(void);
 125 uid_t    getuid(void);
 126 int      isatty(int);
 127 int      link(const char *, const char *);
 128 long     pathconf(const char *, int);
 129 int      pause(void);
 130 int      pipe(int *);
 131 #if __SSP_FORTIFY_LEVEL == 0
 132 ssize_t  read(int, void *, size_t);
 133 #endif
 134 int      rmdir(const char *);
 135 int      setgid(gid_t);
 136 #ifndef __minix
 137 int      setpgid(pid_t, pid_t);
 138 #endif /* !__minix */
 139 pid_t    setsid(void);
 140 int      setuid(uid_t);
 141 unsigned int     sleep(unsigned int);
 142 long     sysconf(int);
 143 pid_t    tcgetpgrp(int);
 144 int      tcsetpgrp(int, pid_t);
 145 __aconst char *ttyname(int);
 146 int      unlink(const char *);
 147 ssize_t  write(int, const void *, size_t);
 148
 149
 150 /*
 151  * IEEE Std 1003.2-92, adopted in X/Open Portability Guide Issue 4 and later
 152  */
 153 #if (_POSIX_C_SOURCE - 0) >= 2 || defined(_XOPEN_SOURCE) || \
 154     defined(_NETBSD_SOURCE)
 155 int      getopt(int, char * const [], const char *);
 156
 157 extern   char *optarg;                  /* getopt(3) external variables */
 158 extern   int opterr;
 159 extern   int optind;
 160 extern   int optopt;
 161 #endif
 162
 163 /*
 164  * The Open Group Base Specifications, Issue 6; IEEE Std 1003.1-2001 (POSIX)
 165  */
 166 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 600 || \
 167     defined(_NETBSD_SOURCE)
 168 int      setegid(gid_t);
 169 int      seteuid(uid_t);
 170 #endif
 171
 172 /*
 173  * The following three syscalls are also defined in <sys/types.h>
 174  * We protect them against double declarations.
 175  */
 176 #ifndef __OFF_T_SYSCALLS_DECLARED
 177 #define __OFF_T_SYSCALLS_DECLARED
 178 off_t    lseek(int, off_t, int);
 179 int      truncate(const char *, off_t);
 180 /*
 181  * IEEE Std 1003.1b-93,
 182  * also found in X/Open Portability Guide >= Issue 4 Verion 2
 183  */
 184 #if (_POSIX_C_SOURCE - 0) >= 199309L || \
 185     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 186     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 187 int      ftruncate(int, off_t);
 188 #endif
 189 #endif /* __OFF_T_SYSCALLS_DECLARED */
 190
 191
 192 /*
 193  * IEEE Std 1003.1b-93, adopted in X/Open CAE Specification Issue 5 Version 2
 194  */
 195 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
 196     defined(_NETBSD_SOURCE)
 197 #ifndef __minix
 198 int      fdatasync(int);
 199 #endif /* !__minix */
 200 int      fsync(int);
 201 #endif
 202
 203
 204 /*
 205  * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
 206  */
 207 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
 208     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
 209 int      ttyname_r(int, char *, size_t);
 210 int      pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
 211 #endif
 212
 213 /*
 214  * X/Open Portability Guide, all issues
 215  */
 216 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
 217 int      chroot(const char *);
 218 int      nice(int);
 219 #endif
 220
 221
 222 /*
 223  * X/Open Portability Guide >= Issue 4
 224  */
 225 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
 226 __aconst char *crypt(const char *, const char *);
 227 int      encrypt(char *, int);
 228 char    *getpass(const char *);
 229 pid_t    getsid(pid_t);
 230 #endif
 231
 232
 233 /*
 234  * X/Open Portability Guide >= Issue 4 Version 2
 235  */
 236 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 237     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 238 #ifndef intptr_t
 239 typedef __intptr_t      intptr_t;
 240 #define intptr_t        __intptr_t
 241 #endif
 242
 243 #define F_ULOCK         0
 244 #define F_LOCK          1
 245 #define F_TLOCK         2
 246 #define F_TEST          3
 247
 248 int      brk(void *);
 249 int      fchdir(int);
 250 #if !defined(__minix) && defined(_XOPEN_SOURCE)
 251 int      fchown(int, uid_t, gid_t) __RENAME(__posix_fchown);
 252 #else
 253 int      fchown(int, uid_t, gid_t);
 254 #endif
 255 int      getdtablesize(void);
 256 long     gethostid(void);
 257 int      gethostname(char *, size_t);
 258 __pure int
 259          getpagesize(void);             /* legacy */
 260 #ifndef __minix
 261 pid_t    getpgid(pid_t);
 262 #endif /* !__minix */
 263 #ifndef __minix
 264 #if defined(_XOPEN_SOURCE)
 265 int      lchown(const char *, uid_t, gid_t) __RENAME(__posix_lchown);
 266 #else
 267 int      lchown(const char *, uid_t, gid_t);
 268 #endif
 269 #endif /* !__minix */
 270 int      lockf(int, int, off_t);
 271 #if __SSP_FORTIFY_LEVEL == 0
 272 ssize_t  readlink(const char * __restrict, char * __restrict, size_t);
 273 #endif
 274 void    *sbrk(intptr_t);
 275 #ifndef __minix
 276 /* XXX prototype wrong! */
 277 int      setpgrp(pid_t, pid_t);                 /* obsoleted by setpgid() */
 278 int      setregid(gid_t, gid_t);
 279 int      setreuid(uid_t, uid_t);
 280 #endif /* !__minix */
 281 void     swab(const void * __restrict, void * __restrict, ssize_t);
 282 int      symlink(const char *, const char *);
 283 void     sync(void);
 284 useconds_t ualarm(useconds_t, useconds_t);
 285 int      usleep(useconds_t);
 286 #ifndef __LIBC12_SOURCE__
 287 pid_t    vfork(void) __RENAME(__vfork14);
 288 #endif
 289
 290 #ifndef __AUDIT__
 291 char    *getwd(char *);                         /* obsoleted by getcwd() */
 292 #endif
 293 #endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
 294
 295
 296 /*
 297  * X/Open CAE Specification Issue 5 Version 2
 298  */
 299 #if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 300 ssize_t  pread(int, void *, size_t, off_t);
 301 ssize_t  pwrite(int, const void *, size_t, off_t);
 302 #endif
 303
 304
 305 /*
 306  * Implementation-defined extensions
 307  */
 308 #ifdef __minix
 309 int lseek64(int fd, u64_t _offset, int _whence, u64_t *_newpos);
 310 #if defined(_MINIX)
 311 #include <minix/type.h>
 312
 313 int getprocnr(void);
 314 int getnprocnr(pid_t pid);
 315 int getpprocnr(void);
 316 int _pm_findproc(char *proc_name, int *proc_nr);
 317 int mapdriver(char *label, int major, int style, int flags);
 318 pid_t getnpid(endpoint_t proc_ep);
 319 uid_t getnuid(endpoint_t proc_ep);
 320 gid_t getngid(endpoint_t proc_ep);
 321 int getnucred(endpoint_t proc_ep, struct ucred *ucred);
 322 ssize_t pread64(int fd, void *buf, size_t count, u64_t where);
 323 ssize_t pwrite64(int fd, const void *buf, size_t count, u64_t where);
 324 #endif /* __MINIX */
 325 #endif /* __minix */
 326
 327 #if defined(_NETBSD_SOURCE)
 328 #ifndef __minix
 329 int      acct(const char *);
 330 #endif /* !__minix */
 331 int      closefrom(int);
 332 int      des_cipher(const char *, char *, long, int);
 333 int      des_setkey(const char *);
 334 void     endusershell(void);
 335 int      exect(const char *, char * const *, char * const *);
 336 int      fchroot(int);
 337 int      fsync_range(int, int, off_t, off_t);
 338 int      getdomainname(char *, size_t);
 339 int      getgrouplist(const char *, gid_t, gid_t *, int *);
 340 int      getgroupmembership(const char *, gid_t, gid_t *, int, int *);
 341 mode_t   getmode(const void *, mode_t);
 342 int      getpeereid(int, uid_t *, gid_t *);
 343 int      getsubopt(char **, char * const *, char **);
 344 __aconst char *getusershell(void);
 345 int      initgroups(const char *, gid_t);
 346 int      iruserok(uint32_t, int, const char *, const char *);
 347 int      issetugid(void);
 348 int      nfssvc(int, void *);
 349 #ifndef __minix
 350 int      profil(char *, size_t, u_long, u_int);
 351 #endif /* !__minix */
 352 #ifndef __PSIGNAL_DECLARED
 353 #define __PSIGNAL_DECLARED
 354 /* also in signal.h */
 355 void    psignal(int, const char *);
 356 #endif /* __PSIGNAL_DECLARED */
 357 int      rcmd(char **, int, const char *, const char *, const char *, int *);
 358 #ifdef __minix
 359 int      reboot(int);
 360 #else
 361 int      reboot(int, char *);
 362 #endif
 363 #ifndef __minix
 364 int      revoke(const char *);
 365 #endif
 366 int      rresvport(int *);
 367 int      ruserok(const char *, int, const char *, const char *);
 368 int      setdomainname(const char *, size_t);
 369 int      setgroups(int, const gid_t *);
 370 int      sethostid(long);
 371 int      sethostname(const char *, size_t);
 372 int      setlogin(const char *);
 373 void    *setmode(const char *);
 374 int      setrgid(gid_t);
 375 int      setruid(uid_t);
 376 void     setusershell(void);
 377 void     strmode(mode_t, char *);
 378 #ifndef __STRSIGNAL_DECLARED
 379 #define __STRSIGNAL_DECLARED
 380 /* backwards-compatibility; also in string.h */
 381 __aconst char *strsignal(int);
 382 #endif /* __STRSIGNAL_DECLARED */
 383 #ifndef __minix
 384 int      swapctl(int, void *, int);
 385 int      swapon(const char *);                  /* obsoleted by swapctl() */
 386 #endif /* !__minix */
 387 int      syscall(int, ...);
 388 quad_t   __syscall(quad_t, ...);
 389 int      undelete(const char *);
 390
 391 #if 1 /*INET6*/
 392 int      rcmd_af(char **, int, const char *,
 393             const char *, const char *, int *, int);
 394 int      rresvport_af(int *, int);
 395 int      iruserok_sa(const void *, int, int, const char *, const char *);
 396 #endif
 397
 398 #ifndef __SYS_SIGLIST_DECLARED
 399 #define __SYS_SIGLIST_DECLARED
 400 /* also in signal.h */
 401 extern const char *const *sys_siglist __RENAME(__sys_siglist14);
 402 #endif /* __SYS_SIGLIST_DECLARED */
 403 extern   int optreset;          /* getopt(3) external variable */
 404 extern   char *suboptarg;       /* getsubopt(3) external variable */
 405 #endif
 406
 407 __END_DECLS
 408
 409 #ifdef __minix
 410 /* Minix expects RBT_* flags to be included with <unistd.h> */
 411 #include <sys/reboot.h>
 412 #endif
 413
 414 #endif /* !_UNISTD_H_ */