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unistd.h revision 1.83
      1 /*	$NetBSD: unistd.h,v 1.83 2000/04/02 06:32:41 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998, 1999 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Copyright (c) 1991, 1993, 1994
     41  *	The Regents of the University of California.  All rights reserved.
     42  *
     43  * Redistribution and use in source and binary forms, with or without
     44  * modification, are permitted provided that the following conditions
     45  * are met:
     46  * 1. Redistributions of source code must retain the above copyright
     47  *    notice, this list of conditions and the following disclaimer.
     48  * 2. Redistributions in binary form must reproduce the above copyright
     49  *    notice, this list of conditions and the following disclaimer in the
     50  *    documentation and/or other materials provided with the distribution.
     51  * 3. All advertising materials mentioning features or use of this software
     52  *    must display the following acknowledgement:
     53  *	This product includes software developed by the University of
     54  *	California, Berkeley and its contributors.
     55  * 4. Neither the name of the University nor the names of its contributors
     56  *    may be used to endorse or promote products derived from this software
     57  *    without specific prior written permission.
     58  *
     59  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     60  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     61  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     62  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     63  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     64  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     65  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     66  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     67  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     68  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     69  * SUCH DAMAGE.
     70  *
     71  *	@(#)unistd.h	8.12 (Berkeley) 4/27/95
     72  */
     73 
     74 #ifndef _UNISTD_H_
     75 #define	_UNISTD_H_
     76 
     77 #include <machine/ansi.h>
     78 #include <sys/cdefs.h>
     79 #include <sys/featuretest.h>
     80 #include <sys/types.h>
     81 #include <sys/unistd.h>
     82 
     83 
     84 /*
     85  * IEEE Std 1003.1-90
     86  */
     87 #define	STDIN_FILENO	0	/* standard input file descriptor */
     88 #define	STDOUT_FILENO	1	/* standard output file descriptor */
     89 #define	STDERR_FILENO	2	/* standard error file descriptor */
     90 
     91 #include <sys/null.h>
     92 
     93 __BEGIN_DECLS
     94 __dead	 void _exit __P((int)) __attribute__((__noreturn__));
     95 int	 access __P((const char *, int));
     96 unsigned int alarm __P((unsigned int));
     97 int	 chdir __P((const char *));
     98 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
     99 int	chown __P((const char *, uid_t, gid_t)) __RENAME(__posix_chown);
    100 #else
    101 int	chown __P((const char *, uid_t, gid_t));
    102 #endif /* defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) */
    103 int	 close __P((int));
    104 size_t	 confstr __P((int, char *, size_t));
    105 char	*cuserid __P((char *));	/* obsolete */
    106 int	 dup __P((int));
    107 int	 dup2 __P((int, int));
    108 int	 execl __P((const char *, const char *, ...));
    109 int	 execle __P((const char *, const char *, ...));
    110 int	 execlp __P((const char *, const char *, ...));
    111 int	 execv __P((const char *, char * const *));
    112 int	 execve __P((const char *, char * const *, char * const *));
    113 int	 execvp __P((const char *, char * const *));
    114 pid_t	 fork __P((void));
    115 long	 fpathconf __P((int, int));
    116 char	*getcwd __P((char *, size_t));
    117 gid_t	 getegid __P((void));
    118 uid_t	 geteuid __P((void));
    119 gid_t	 getgid __P((void));
    120 int	 getgroups __P((int, gid_t []));
    121 __aconst char *getlogin __P((void));
    122 pid_t	 getpgrp __P((void));
    123 pid_t	 getpid __P((void));
    124 pid_t	 getppid __P((void));
    125 uid_t	 getuid __P((void));
    126 int	 isatty __P((int));
    127 int	 link __P((const char *, const char *));
    128 off_t	 lseek __P((int, off_t, int));
    129 long	 pathconf __P((const char *, int));
    130 int	 pause __P((void));
    131 int	 pipe __P((int *));
    132 ssize_t	 read __P((int, void *, size_t));
    133 int	 rmdir __P((const char *));
    134 int	 setgid __P((gid_t));
    135 int	 setpgid __P((pid_t, pid_t));
    136 pid_t	 setsid __P((void));
    137 int	 setuid __P((uid_t));
    138 unsigned int	 sleep __P((unsigned int));
    139 long	 sysconf __P((int));
    140 pid_t	 tcgetpgrp __P((int));
    141 int	 tcsetpgrp __P((int, pid_t));
    142 __aconst char *ttyname __P((int));
    143 int	 unlink __P((const char *));
    144 ssize_t	 write __P((int, const void *, size_t));
    145 
    146 
    147 /*
    148  * IEEE Std 1003.2-92, adopted in X/Open Portability Guide Issue 4 and later
    149  */
    150 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || \
    151     (_POSIX_C_SOURCE - 0) >= 2 || (_XOPEN_SOURCE - 0) >= 4
    152 int	 getopt __P((int, char * const [], const char *));
    153 
    154 extern	 char *optarg;			/* getopt(3) external variables */
    155 extern	 int opterr;
    156 extern	 int optind;
    157 extern	 int optopt;
    158 #endif
    159 
    160 
    161 /*
    162  * IEEE Std 1003.1b-93,
    163  * also found in X/Open Portability Guide >= Issue 4 Verion 2
    164  */
    165 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || \
    166     (_POSIX_C_SOURCE - 0) >= 199309L || \
    167     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    168     (_XOPEN_SOURCE - 0) >= 500
    169 int	 ftruncate __P((int, off_t));
    170 #endif
    171 
    172 
    173 /*
    174  * IEEE Std 1003.1b-93, adopted in X/Open CAE Specification Issue 5 Version 2
    175  */
    176 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || \
    177     (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500
    178 int	 fdatasync __P((int));
    179 int	 fsync __P((int));
    180 #endif
    181 
    182 
    183 /*
    184  * X/Open Portability Guide, all issues
    185  */
    186 #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
    187 int	 chroot __P((const char *));
    188 int	 nice __P((int));
    189 #endif
    190 
    191 
    192 /*
    193  * X/Open Portability Guide <= Issue 3
    194  */
    195 #if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE - 0) <= 3
    196 int	 rename __P((const char *, const char *)) __RENAME(__posix_rename);
    197 #endif
    198 
    199 
    200 /*
    201  * X/Open Portability Guide >= Issue 4
    202  */
    203 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || \
    204     (_XOPEN_SOURCE - 0) >= 4
    205 __aconst char *crypt __P((const char *, const char *));
    206 int	 encrypt __P((char *, int));
    207 char	*getpass __P((const char *));
    208 pid_t	 getsid __P((pid_t));
    209 #endif
    210 
    211 
    212 /*
    213  * X/Open Portability Guide >= Issue 4 Version 2
    214  */
    215 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || \
    216     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    217     (_XOPEN_SOURCE - 0) >= 500
    218 #ifdef  _BSD_INTPTR_T_
    219 typedef _BSD_INTPTR_T_	intptr_t;
    220 #undef  _BSD_INTPTR_T_
    221 #endif
    222 
    223 #define F_ULOCK		0
    224 #define F_LOCK		1
    225 #define F_TLOCK		2
    226 #define F_TEST		3
    227 
    228 int	 brk __P((void *));
    229 int	 fchdir __P((int));
    230 #if defined(_XOPEN_SOURCE)
    231 int	 fchown __P((int, uid_t, gid_t)) __RENAME(__posix_fchown);
    232 #else
    233 int	 fchown __P((int, uid_t, gid_t));
    234 #endif
    235 int	 getdtablesize __P((void));
    236 long	 gethostid __P((void));
    237 int	 gethostname __P((char *, size_t));
    238 __pure int
    239 	 getpagesize __P((void));		/* legacy */
    240 pid_t	 getpgid __P((pid_t));
    241 #if defined(_XOPEN_SOURCE)
    242 int	 lchown __P((const char *, uid_t, gid_t)) __RENAME(__posix_lchown);
    243 #else
    244 int	 lchown __P((const char *, uid_t, gid_t));
    245 #endif
    246 int	 lockf __P((int, int, off_t));
    247 int	 readlink __P((const char *, char *, size_t));
    248 void	*sbrk __P((intptr_t));
    249 /* XXX prototype wrong! */
    250 int	 setpgrp __P((pid_t pid, pid_t pgrp));	/* obsoleted by setpgid() */
    251 int	 setregid __P((gid_t, gid_t));
    252 int	 setreuid __P((uid_t, uid_t));
    253 void	 swab __P((const void *, void *, size_t));
    254 int	 symlink __P((const char *, const char *));
    255 void	 sync __P((void));
    256 int	 truncate __P((const char *, off_t));
    257 useconds_t ualarm __P((useconds_t, useconds_t));
    258 int	 usleep __P((useconds_t));
    259 #ifdef __LIBC12_SOURCE__
    260 pid_t	 vfork __P((void));
    261 pid_t	 __vfork14 __P((void));
    262 #else
    263 pid_t	 vfork __P((void))			__RENAME(__vfork14);
    264 #endif
    265 
    266 #ifndef __AUDIT__
    267 char	*getwd __P((char *));			/* obsoleted by getcwd() */
    268 #endif
    269 
    270 /* FIXME: this should go to <sys/time.h>! */
    271 #if __STDC__
    272 struct timeval;				/* select(2) XXX */
    273 #endif
    274 int	 select __P((int, fd_set *, fd_set *, fd_set *, struct timeval *));
    275 #endif /* (!defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)) || ... */
    276 
    277 
    278 /*
    279  * X/Open CAE Specification Issue 5 Version 2
    280  */
    281 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || \
    282     (_XOPEN_SOURCE - 0) >= 500
    283 ssize_t	 pread __P((int, void *, size_t, off_t));
    284 ssize_t	 pwrite __P((int, const void *, size_t, off_t));
    285 #endif
    286 
    287 
    288 /*
    289  * Implementation-defined extensions
    290  */
    291 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)
    292 int	 acct __P((const char *));
    293 int	 des_cipher __P((const char *, char *, long, int));
    294 int	 des_setkey __P((const char *key));
    295 void	 endusershell __P((void));
    296 int	 exect __P((const char *, char * const *, char * const *));
    297 int	 fchroot __P((int));
    298 int	 getdomainname __P((char *, size_t));
    299 int	 getgrouplist __P((const char *, gid_t, gid_t *, int *));
    300 mode_t	 getmode __P((const void *, mode_t));
    301 int	 getsubopt __P((char **, char * const *, char **));
    302 __aconst char *getusershell __P((void));
    303 int	 initgroups __P((const char *, gid_t));
    304 int	 iruserok __P((u_int32_t, int, const char *, const char *));
    305 int	 nfssvc __P((int, void *));
    306 int	 profil __P((char *, size_t, u_long, u_int));
    307 void	 psignal __P((unsigned int, const char *));
    308 int	 rcmd __P((char **, int, const char *,
    309 	    const char *, const char *, int *));
    310 int	 reboot __P((int, char *));
    311 int	 revoke __P((const char *));
    312 int	 rresvport __P((int *));
    313 int	 ruserok __P((const char *, int, const char *, const char *));
    314 int	 setdomainname __P((const char *, size_t));
    315 int	 setegid __P((gid_t));
    316 int	 seteuid __P((uid_t));
    317 int	 setgroups __P((int, const gid_t *));
    318 int	 sethostid __P((long));
    319 int	 sethostname __P((const char *, size_t));
    320 int	 setlogin __P((const char *));
    321 void	*setmode __P((const char *));
    322 int	 setrgid __P((gid_t));
    323 int	 setruid __P((uid_t));
    324 void	 setusershell __P((void));
    325 void	 strmode __P((mode_t, char *));
    326 __aconst char *strsignal __P((int));
    327 int	 swapctl __P((int, const void *, int));
    328 int	 swapon __P((const char *));		/* obsoleted by swapctl() */
    329 int	 syscall __P((int, ...));
    330 quad_t	 __syscall __P((quad_t, ...));
    331 int	 undelete __P((const char *));
    332 
    333 #if 1 /*INET6*/
    334 int	 rcmd_af __P((char **, int, const char *,
    335 	    const char *, const char *, int *, int));
    336 int	 rresvport_af __P((int *, int));
    337 int	 iruserok_sa __P((const void *, int, int, const char *, const char *));
    338 #endif
    339 
    340 extern __const char *__const *sys_siglist __RENAME(__sys_siglist14);
    341 extern	 int optreset;		/* getopt(3) external variable */
    342 extern	 char *suboptarg;	/* getsubopt(3) external variable */
    343 #endif
    344 
    345 __END_DECLS
    346 
    347 #endif /* !_UNISTD_H_ */
    348