unistd.h revision 1.106 
1/*	$NetBSD: unistd.h,v 1.106 2005/09/25 20:08:15 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. Neither the name of the University nor the names of its contributors
52 *    may be used to endorse or promote products derived from this software
53 *    without specific prior written permission.
54 *
55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 * SUCH DAMAGE.
66 *
67 *	@(#)unistd.h	8.12 (Berkeley) 4/27/95
68 */
69
70#ifndef _UNISTD_H_
71#define	_UNISTD_H_
72
73#include <machine/ansi.h>
74#include <machine/int_types.h>
75#include <sys/cdefs.h>
76#include <sys/featuretest.h>
77#include <sys/types.h>
78#include <sys/unistd.h>
79
80
81/*
82 * IEEE Std 1003.1-90
83 */
84#define	STDIN_FILENO	0	/* standard input file descriptor */
85#define	STDOUT_FILENO	1	/* standard output file descriptor */
86#define	STDERR_FILENO	2	/* standard error file descriptor */
87
88#include <sys/null.h>
89
90__BEGIN_DECLS
91__dead	 void _exit(int) __attribute__((__noreturn__));
92int	 access(const char *, int);
93unsigned int alarm(unsigned int);
94int	 chdir(const char *);
95#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
96int	chown(const char *, uid_t, gid_t) __RENAME(__posix_chown);
97#else
98int	chown(const char *, uid_t, gid_t);
99#endif /* defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) */
100int	 close(int);
101size_t	 confstr(int, char *, size_t);
102#ifndef __CUSERID_DECLARED
103#define __CUSERID_DECLARED
104/* also declared in stdio.h */
105char	*cuserid(char *);	/* obsolete */
106#endif /* __CUSERID_DECLARED */
107int	 dup(int);
108int	 dup2(int, int);
109int	 execl(const char *, const char *, ...);
110int	 execle(const char *, const char *, ...);
111int	 execlp(const char *, const char *, ...);
112int	 execv(const char *, char * const *);
113int	 execve(const char *, char * const *, char * const *);
114int	 execvp(const char *, char * const *);
115pid_t	 fork(void);
116long	 fpathconf(int, int);
117char	*getcwd(char *, size_t);
118gid_t	 getegid(void);
119uid_t	 geteuid(void);
120gid_t	 getgid(void);
121int	 getgroups(int, gid_t []);
122__aconst char *getlogin(void);
123pid_t	 getpgrp(void);
124pid_t	 getpid(void);
125pid_t	 getppid(void);
126uid_t	 getuid(void);
127int	 isatty(int);
128int	 link(const char *, const char *);
129long	 pathconf(const char *, int);
130int	 pause(void);
131int	 pipe(int *);
132ssize_t	 read(int, void *, size_t);
133int	 rmdir(const char *);
134int	 setgid(gid_t);
135int	 setpgid(pid_t, pid_t);
136pid_t	 setsid(void);
137int	 setuid(uid_t);
138unsigned int	 sleep(unsigned int);
139long	 sysconf(int);
140pid_t	 tcgetpgrp(int);
141int	 tcsetpgrp(int, pid_t);
142__aconst char *ttyname(int);
143__aconst char *ttyname_r(int, char *, size_t);
144int	 unlink(const char *);
145ssize_t	 write(int, const void *, size_t);
146
147
148/*
149 * IEEE Std 1003.2-92, adopted in X/Open Portability Guide Issue 4 and later
150 */
151#if (_POSIX_C_SOURCE - 0) >= 2 || (_XOPEN_SOURCE - 0) >= 4 || \
152    defined(_NETBSD_SOURCE)
153int	 getopt(int, char * const [], const char *);
154
155extern	 char *optarg;			/* getopt(3) external variables */
156extern	 int opterr;
157extern	 int optind;
158extern	 int optopt;
159#endif
160
161/*
162 * The Open Group Base Specifications, Issue 6; IEEE Std 1003.1-2001 (POSIX)
163 */
164#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 600 || \
165    defined(_NETBSD_SOURCE)
166int	 setegid(gid_t);
167int	 seteuid(uid_t);
168#endif
169
170/*
171 * The following three syscalls are also defined in <sys/types.h>
172 * We protect them against double declarations.
173 */
174#ifndef __OFF_T_SYSCALLS_DECLARED
175#define __OFF_T_SYSCALLS_DECLARED
176off_t	 lseek(int, off_t, int);
177int	 truncate(const char *, off_t);
178/*
179 * IEEE Std 1003.1b-93,
180 * also found in X/Open Portability Guide >= Issue 4 Verion 2
181 */
182#if (_POSIX_C_SOURCE - 0) >= 199309L || \
183    (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
184    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
185int	 ftruncate(int, off_t);
186#endif
187#endif /* __OFF_T_SYSCALLS_DECLARED */
188
189
190/*
191 * IEEE Std 1003.1b-93, adopted in X/Open CAE Specification Issue 5 Version 2
192 */
193#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
194    defined(_NETBSD_SOURCE)
195int	 fdatasync(int);
196int	 fsync(int);
197#endif
198
199
200/*
201 * X/Open Portability Guide, all issues
202 */
203#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
204int	 chroot(const char *);
205int	 nice(int);
206#endif
207
208
209/*
210 * X/Open Portability Guide <= Issue 3
211 */
212#if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE - 0) <= 3
213int	 rename(const char *, const char *) __RENAME(__posix_rename);
214#endif
215
216
217/*
218 * X/Open Portability Guide >= Issue 4
219 */
220#if (_XOPEN_SOURCE - 0) >= 4 || defined(_NETBSD_SOURCE)
221__aconst char *crypt(const char *, const char *);
222int	 encrypt(char *, int);
223char	*getpass(const char *);
224pid_t	 getsid(pid_t);
225#endif
226
227
228/*
229 * X/Open Portability Guide >= Issue 4 Version 2
230 */
231#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
232    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
233#ifndef	intptr_t
234typedef	__intptr_t	intptr_t;
235#define	intptr_t	__intptr_t
236#endif
237
238#define F_ULOCK		0
239#define F_LOCK		1
240#define F_TLOCK		2
241#define F_TEST		3
242
243int	 brk(void *);
244int	 fchdir(int);
245#if defined(_XOPEN_SOURCE)
246int	 fchown(int, uid_t, gid_t) __RENAME(__posix_fchown);
247#else
248int	 fchown(int, uid_t, gid_t);
249#endif
250int	 getdtablesize(void);
251long	 gethostid(void);
252int	 gethostname(char *, size_t);
253__pure int
254	 getpagesize(void);		/* legacy */
255pid_t	 getpgid(pid_t);
256#if defined(_XOPEN_SOURCE)
257int	 lchown(const char *, uid_t, gid_t) __RENAME(__posix_lchown);
258#else
259int	 lchown(const char *, uid_t, gid_t);
260#endif
261int	 lockf(int, int, off_t);
262ssize_t	 readlink(const char * __restrict, char * __restrict, size_t);
263void	*sbrk(intptr_t);
264/* XXX prototype wrong! */
265int	 setpgrp(pid_t, pid_t);			/* obsoleted by setpgid() */
266int	 setregid(gid_t, gid_t);
267int	 setreuid(uid_t, uid_t);
268void	 swab(const void *, void *, size_t);
269int	 symlink(const char *, const char *);
270void	 sync(void);
271useconds_t ualarm(useconds_t, useconds_t);
272int	 usleep(useconds_t);
273#ifndef __LIBC12_SOURCE__
274pid_t	 vfork(void) __RENAME(__vfork14);
275#endif
276
277#ifndef __AUDIT__
278char	*getwd(char *);				/* obsoleted by getcwd() */
279#endif
280#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
281
282
283/*
284 * X/Open CAE Specification Issue 5 Version 2
285 */
286#if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
287ssize_t	 pread(int, void *, size_t, off_t);
288ssize_t	 pwrite(int, const void *, size_t, off_t);
289#endif
290
291
292/*
293 * Implementation-defined extensions
294 */
295#if defined(_NETBSD_SOURCE)
296int	 acct(const char *);
297int	 closefrom(int);
298int	 des_cipher(const char *, char *, long, int);
299int	 des_setkey(const char *);
300void	 endusershell(void);
301int	 exect(const char *, char * const *, char * const *);
302int	 fchroot(int);
303int	 fsync_range(int, int, off_t, off_t);
304int	 getdomainname(char *, size_t);
305int	 getgrouplist(const char *, gid_t, gid_t *, int *);
306int	 getgroupmembership(const char *, gid_t, gid_t *, int, int *);
307mode_t	 getmode(const void *, mode_t);
308int	 getsubopt(char **, char * const *, char **);
309__aconst char *getusershell(void);
310int	 initgroups(const char *, gid_t);
311int	 iruserok(u_int32_t, int, const char *, const char *);
312int      issetugid(void);
313int	 nfssvc(int, void *);
314int	 profil(char *, size_t, u_long, u_int);
315#ifndef __PSIGNAL_DECLARED
316#define __PSIGNAL_DECLARED
317/* also in signal.h */
318void	psignal(unsigned int, const char *);
319#endif /* __PSIGNAL_DECLARED */
320int	 rcmd(char **, int, const char *, const char *, const char *, int *);
321int	 reboot(int, char *);
322int	 revoke(const char *);
323int	 rresvport(int *);
324int	 ruserok(const char *, int, const char *, const char *);
325int	 setdomainname(const char *, size_t);
326int	 setgroups(int, const gid_t *);
327int	 sethostid(long);
328int	 sethostname(const char *, size_t);
329int	 setlogin(const char *);
330void	*setmode(const char *);
331int	 setrgid(gid_t);
332int	 setruid(uid_t);
333void	 setusershell(void);
334void	 strmode(mode_t, char *);
335__aconst char *strsignal(int);
336int	 swapctl(int, void *, int);
337int	 swapon(const char *);			/* obsoleted by swapctl() */
338int	 syscall(int, ...);
339quad_t	 __syscall(quad_t, ...);
340int	 undelete(const char *);
341
342#if 1 /*INET6*/
343int	 rcmd_af(char **, int, const char *,
344	    const char *, const char *, int *, int);
345int	 rresvport_af(int *, int);
346int	 iruserok_sa(const void *, int, int, const char *, const char *);
347#endif
348
349#ifndef __SYS_SIGLIST_DECLARED
350#define __SYS_SIGLIST_DECLARED
351/* also in signal.h */
352extern __const char *__const *sys_siglist __RENAME(__sys_siglist14);
353#endif /* __SYS_SIGLIST_DECLARED */
354extern	 int optreset;		/* getopt(3) external variable */
355extern	 char *suboptarg;	/* getsubopt(3) external variable */
356#endif
357
358__END_DECLS
359
360#endif /* !_UNISTD_H_ */
361