include/unistd.h

   1 /*      $NetBSD: unistd.h,v 1.120 2009/01/11 03:04:12 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
  74 /*
  75  * IEEE Std 1003.1-90
  76  */
  77 #define STDIN_FILENO    0       /* standard input file descriptor */
  78 #define STDOUT_FILENO   1       /* standard output file descriptor */
  79 #define STDERR_FILENO   2       /* standard error file descriptor */
  80
  81 #include <sys/null.h>
  82
  83 __BEGIN_DECLS
  84 __dead   void _exit(int);
  85 int      access(const char *, int);
  86 unsigned int alarm(unsigned int);
  87 int      chdir(const char *);
  88 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
  89 int     chown(const char *, uid_t, gid_t) __RENAME(__posix_chown);
  90 #else
  91 int     chown(const char *, uid_t, gid_t);
  92 #endif /* defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) */
  93 int      close(int);
  94 size_t   confstr(int, char *, size_t);
  95 #ifndef __CUSERID_DECLARED
  96 #define __CUSERID_DECLARED
  97 /* also declared in stdio.h */
  98 char    *cuserid(char *);       /* obsolete */
  99 #endif /* __CUSERID_DECLARED */
 100 int      dup(int);
 101 int      dup2(int, int);
 102 int      execl(const char *, const char *, ...);
 103 int      execle(const char *, const char *, ...);
 104 int      execlp(const char *, const char *, ...);
 105 int      execv(const char *, char * const *);
 106 int      execve(const char *, char * const *, char * const *);
 107 int      execvp(const char *, char * const *);
 108 pid_t    fork(void);
 109 long     fpathconf(int, int);
 110 char    *getcwd(char *, size_t);
 111 gid_t    getegid(void);
 112 uid_t    geteuid(void);
 113 gid_t    getgid(void);
 114 int      getgroups(int, gid_t []);
 115 __aconst char *getlogin(void);
 116 int      getlogin_r(char *, size_t);
 117 pid_t    getpgrp(void);
 118 pid_t    getpid(void);
 119 pid_t    getppid(void);
 120 uid_t    getuid(void);
 121 int      isatty(int);
 122 int      link(const char *, const char *);
 123 long     pathconf(const char *, int);
 124 int      pause(void);
 125 int      pipe(int *);
 126 ssize_t  read(int, void *, size_t);
 127 int      rmdir(const char *);
 128 int      setgid(gid_t);
 129 int      setpgid(pid_t, pid_t);
 130 pid_t    setsid(void);
 131 int      setuid(uid_t);
 132 unsigned int     sleep(unsigned int);
 133 long     sysconf(int);
 134 pid_t    tcgetpgrp(int);
 135 int      tcsetpgrp(int, pid_t);
 136 __aconst char *ttyname(int);
 137 int      unlink(const char *);
 138 ssize_t  write(int, const void *, size_t);
 139
 140
 141 /*
 142  * IEEE Std 1003.2-92, adopted in X/Open Portability Guide Issue 4 and later
 143  */
 144 #if (_POSIX_C_SOURCE - 0) >= 2 || defined(_XOPEN_SOURCE) || \
 145     defined(_NETBSD_SOURCE)
 146 int      getopt(int, char * const [], const char *);
 147
 148 extern   char *optarg;                  /* getopt(3) external variables */
 149 extern   int opterr;
 150 extern   int optind;
 151 extern   int optopt;
 152 #endif
 153
 154 /*
 155  * The Open Group Base Specifications, Issue 6; IEEE Std 1003.1-2001 (POSIX)
 156  */
 157 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 600 || \
 158     defined(_NETBSD_SOURCE)
 159 int      setegid(gid_t);
 160 int      seteuid(uid_t);
 161 #endif
 162
 163 /*
 164  * The following three syscalls are also defined in <sys/types.h>
 165  * We protect them against double declarations.
 166  */
 167 #ifndef __OFF_T_SYSCALLS_DECLARED
 168 #define __OFF_T_SYSCALLS_DECLARED
 169 off_t    lseek(int, off_t, int);
 170 int      truncate(const char *, off_t);
 171 /*
 172  * IEEE Std 1003.1b-93,
 173  * also found in X/Open Portability Guide >= Issue 4 Verion 2
 174  */
 175 #if (_POSIX_C_SOURCE - 0) >= 199309L || \
 176     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 177     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 178 int      ftruncate(int, off_t);
 179 #endif
 180 #endif /* __OFF_T_SYSCALLS_DECLARED */
 181
 182
 183 /*
 184  * IEEE Std 1003.1b-93, adopted in X/Open CAE Specification Issue 5 Version 2
 185  */
 186 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
 187     defined(_NETBSD_SOURCE)
 188 int      fdatasync(int);
 189 int      fsync(int);
 190 #endif
 191
 192
 193 /*
 194  * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
 195  */
 196 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
 197     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
 198 int      ttyname_r(int, char *, size_t);
 199 int      pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
 200 #endif
 201
 202 /*
 203  * X/Open Portability Guide, all issues
 204  */
 205 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
 206 int      chroot(const char *);
 207 int      nice(int);
 208 #endif
 209
 210
 211 /*
 212  * X/Open Portability Guide >= Issue 4
 213  */
 214 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
 215 __aconst char *crypt(const char *, const char *);
 216 int      encrypt(char *, int);
 217 char    *getpass(const char *);
 218 pid_t    getsid(pid_t);
 219 #endif
 220
 221
 222 /*
 223  * X/Open Portability Guide >= Issue 4 Version 2
 224  */
 225 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 226     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 227 #ifndef intptr_t
 228 typedef __intptr_t      intptr_t;
 229 #define intptr_t        __intptr_t
 230 #endif
 231
 232 #define F_ULOCK         0
 233 #define F_LOCK          1
 234 #define F_TLOCK         2
 235 #define F_TEST          3
 236
 237 int      brk(void *);
 238 int      fchdir(int);
 239 #if defined(_XOPEN_SOURCE)
 240 int      fchown(int, uid_t, gid_t) __RENAME(__posix_fchown);
 241 #else
 242 int      fchown(int, uid_t, gid_t);
 243 #endif
 244 int      getdtablesize(void);
 245 long     gethostid(void);
 246 int      gethostname(char *, size_t);
 247 __pure int
 248          getpagesize(void);             /* legacy */
 249 pid_t    getpgid(pid_t);
 250 #if defined(_XOPEN_SOURCE)
 251 int      lchown(const char *, uid_t, gid_t) __RENAME(__posix_lchown);
 252 #else
 253 int      lchown(const char *, uid_t, gid_t);
 254 #endif
 255 int      lockf(int, int, off_t);
 256 ssize_t  readlink(const char * __restrict, char * __restrict, size_t);
 257 void    *sbrk(intptr_t);
 258 /* XXX prototype wrong! */
 259 int      setpgrp(pid_t, pid_t);                 /* obsoleted by setpgid() */
 260 int      setregid(gid_t, gid_t);
 261 int      setreuid(uid_t, uid_t);
 262 void     swab(const void *, void *, size_t);
 263 int      symlink(const char *, const char *);
 264 void     sync(void);
 265 useconds_t ualarm(useconds_t, useconds_t);
 266 int      usleep(useconds_t);
 267 #ifndef __LIBC12_SOURCE__
 268 pid_t    vfork(void) __RENAME(__vfork14);
 269 #endif
 270
 271 #ifndef __AUDIT__
 272 char    *getwd(char *);                         /* obsoleted by getcwd() */
 273 #endif
 274 #endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
 275
 276
 277 /*
 278  * X/Open CAE Specification Issue 5 Version 2
 279  */
 280 #if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 281 ssize_t  pread(int, void *, size_t, off_t);
 282 ssize_t  pwrite(int, const void *, size_t, off_t);
 283 #endif
 284
 285
 286 /*
 287  * Implementation-defined extensions
 288  */
 289 #if defined(_NETBSD_SOURCE)
 290 int      acct(const char *);
 291 int      closefrom(int);
 292 int      des_cipher(const char *, char *, long, int);
 293 int      des_setkey(const char *);
 294 void     endusershell(void);
 295 int      exect(const char *, char * const *, char * const *);
 296 int      fchroot(int);
 297 int      fsync_range(int, int, off_t, off_t);
 298 int      getdomainname(char *, size_t);
 299 int      getgrouplist(const char *, gid_t, gid_t *, int *);
 300 int      getgroupmembership(const char *, gid_t, gid_t *, int, int *);
 301 mode_t   getmode(const void *, mode_t);
 302 int      getpeereid(int, uid_t *, gid_t *);
 303 int      getsubopt(char **, char * const *, char **);
 304 __aconst char *getusershell(void);
 305 int      initgroups(const char *, gid_t);
 306 int      iruserok(uint32_t, int, const char *, const char *);
 307 int      issetugid(void);
 308 int      nfssvc(int, void *);
 309 int      profil(char *, size_t, u_long, u_int);
 310 #ifndef __PSIGNAL_DECLARED
 311 #define __PSIGNAL_DECLARED
 312 /* also in signal.h */
 313 void    psignal(unsigned int, const char *);
 314 #endif /* __PSIGNAL_DECLARED */
 315 int      rcmd(char **, int, const char *, const char *, const char *, int *);
 316 int      reboot(int, char *);
 317 int      revoke(const char *);
 318 int      rresvport(int *);
 319 int      ruserok(const char *, int, const char *, const char *);
 320 int      setdomainname(const char *, size_t);
 321 int      setgroups(int, const gid_t *);
 322 int      sethostid(long);
 323 int      sethostname(const char *, size_t);
 324 int      setlogin(const char *);
 325 void    *setmode(const char *);
 326 int      setrgid(gid_t);
 327 int      setruid(uid_t);
 328 void     setusershell(void);
 329 void     strmode(mode_t, char *);
 330 #ifndef __STRSIGNAL_DECLARED
 331 #define __STRSIGNAL_DECLARED
 332 /* backwards-compatibility; also in string.h */
 333 __aconst char *strsignal(int);
 334 #endif /* __STRSIGNAL_DECLARED */
 335 int      swapctl(int, void *, int);
 336 int      swapon(const char *);                  /* obsoleted by swapctl() */
 337 int      syscall(int, ...);
 338 quad_t   __syscall(quad_t, ...);
 339 int      undelete(const char *);
 340
 341 #if 1 /*INET6*/
 342 int      rcmd_af(char **, int, const char *,
 343             const char *, const char *, int *, int);
 344 int      rresvport_af(int *, int);
 345 int      iruserok_sa(const void *, int, int, const char *, const char *);
 346 #endif
 347
 348 #ifndef __SYS_SIGLIST_DECLARED
 349 #define __SYS_SIGLIST_DECLARED
 350 /* also in signal.h */
 351 extern const char *const *sys_siglist __RENAME(__sys_siglist14);
 352 #endif /* __SYS_SIGLIST_DECLARED */
 353 extern   int optreset;          /* getopt(3) external variable */
 354 extern   char *suboptarg;       /* getsubopt(3) external variable */
 355 #endif
 356
 357 __END_DECLS
 358
 359 #if _FORTIFY_SOURCE > 0
 360 #include <ssp/unistd.h>
 361 #endif
 362 #endif /* !_UNISTD_H_ */