unistd.h revision 1.134 
1/*	$NetBSD: unistd.h,v 1.134 2012/04/14 01:34:08 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);
88int	 access(const char *, int);
89unsigned int alarm(unsigned int);
90int	 chdir(const char *);
91#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
92int	chown(const char *, uid_t, gid_t) __RENAME(__posix_chown);
93#else
94int	chown(const char *, uid_t, gid_t);
95#endif /* defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) */
96int	 close(int);
97size_t	 confstr(int, char *, size_t);
98#ifndef __CUSERID_DECLARED
99#define __CUSERID_DECLARED
100/* also declared in stdio.h */
101char	*cuserid(char *);	/* obsolete */
102#endif /* __CUSERID_DECLARED */
103int	 dup(int);
104int	 dup2(int, int);
105int	 execl(const char *, const char *, ...);
106int	 execle(const char *, const char *, ...);
107int	 execlp(const char *, const char *, ...);
108int	 execv(const char *, char * const *);
109int	 execve(const char *, char * const *, char * const *);
110int	 execvp(const char *, char * const *);
111pid_t	 fork(void);
112long	 fpathconf(int, int);
113#if __SSP_FORTIFY_LEVEL == 0
114char	*getcwd(char *, size_t);
115#endif
116gid_t	 getegid(void);
117uid_t	 geteuid(void);
118gid_t	 getgid(void);
119int	 getgroups(int, gid_t []);
120__aconst char *getlogin(void);
121int	 getlogin_r(char *, size_t);
122pid_t	 getpgrp(void);
123pid_t	 getpid(void);
124pid_t	 getppid(void);
125uid_t	 getuid(void);
126int	 isatty(int);
127int	 link(const char *, const char *);
128long	 pathconf(const char *, int);
129int	 pause(void);
130int	 pipe(int *);
131#if __SSP_FORTIFY_LEVEL == 0
132ssize_t	 read(int, void *, size_t);
133#endif
134int	 rmdir(const char *);
135int	 setgid(gid_t);
136int	 setpgid(pid_t, pid_t);
137pid_t	 setsid(void);
138int	 setuid(uid_t);
139unsigned int	 sleep(unsigned int);
140long	 sysconf(int);
141pid_t	 tcgetpgrp(int);
142int	 tcsetpgrp(int, pid_t);
143__aconst char *ttyname(int);
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 || defined(_XOPEN_SOURCE) || \
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 * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
202 */
203#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
204    defined(_REENTRANT) || defined(_NETBSD_SOURCE)
205int	 ttyname_r(int, char *, size_t);
206int	 pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
207#endif
208
209/*
210 * X/Open Portability Guide, all issues
211 */
212#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
213int	 chroot(const char *);
214int	 nice(int);
215#endif
216
217
218/*
219 * X/Open Portability Guide >= Issue 4
220 */
221#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
222__aconst char *crypt(const char *, const char *);
223int	 encrypt(char *, int);
224char	*getpass(const char *);
225pid_t	 getsid(pid_t);
226#endif
227
228
229/*
230 * X/Open Portability Guide >= Issue 4 Version 2
231 */
232#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
233    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
234#ifndef	intptr_t
235typedef	__intptr_t	intptr_t;
236#define	intptr_t	__intptr_t
237#endif
238
239#define F_ULOCK		0
240#define F_LOCK		1
241#define F_TLOCK		2
242#define F_TEST		3
243
244int	 brk(void *);
245int	 fchdir(int);
246#if defined(_XOPEN_SOURCE)
247int	 fchown(int, uid_t, gid_t) __RENAME(__posix_fchown);
248#else
249int	 fchown(int, uid_t, gid_t);
250#endif
251int	 getdtablesize(void);
252long	 gethostid(void);
253int	 gethostname(char *, size_t);
254__pure int
255	 getpagesize(void);		/* legacy */
256pid_t	 getpgid(pid_t);
257#if defined(_XOPEN_SOURCE)
258int	 lchown(const char *, uid_t, gid_t) __RENAME(__posix_lchown);
259#else
260int	 lchown(const char *, uid_t, gid_t);
261#endif
262int	 lockf(int, int, off_t);
263#if __SSP_FORTIFY_LEVEL == 0
264ssize_t	 readlink(const char * __restrict, char * __restrict, size_t);
265#endif
266void	*sbrk(intptr_t);
267/* XXX prototype wrong! */
268int	 setpgrp(pid_t, pid_t);			/* obsoleted by setpgid() */
269int	 setregid(gid_t, gid_t);
270int	 setreuid(uid_t, uid_t);
271void	 swab(const void * __restrict, void * __restrict, ssize_t);
272int	 symlink(const char *, const char *);
273void	 sync(void);
274useconds_t ualarm(useconds_t, useconds_t);
275int	 usleep(useconds_t);
276#ifndef __LIBC12_SOURCE__
277pid_t	 vfork(void) __RENAME(__vfork14) __returns_twice;
278#endif
279
280#ifndef __AUDIT__
281char	*getwd(char *);				/* obsoleted by getcwd() */
282#endif
283#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
284
285
286/*
287 * X/Open CAE Specification Issue 5 Version 2
288 */
289#if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
290ssize_t	 pread(int, void *, size_t, off_t);
291ssize_t	 pwrite(int, const void *, size_t, off_t);
292#endif
293
294/*
295 * X/Open Extended API set 2 (a.k.a. C063)
296 */
297#if defined(_INCOMPLETE_XOPEN_C063)
298int	linkat(int, const char *, int, const char *, int);
299int	renameat(int, const char *, int, const char *);
300int	mkfifoat(int, const char *, mode_t);
301int	mknodat(int, const char *, mode_t, uint32_t);
302int	mkdirat(int, const char *, mode_t);
303int	faccessat(int, const char *, int, int);
304int	fchmodat(int, const char *, mode_t, int);
305int	fchownat(int, const char *, uid_t, gid_t, int);
306int	fexecve(int, char * const *, char * const *);
307int	readlinkat(int, const char *, char *, size_t);
308int	symlinkat(const char *, int, const char *);
309int	unlinkat(int, const char *, int);
310#endif
311
312
313/*
314 * Implementation-defined extensions
315 */
316#if defined(_NETBSD_SOURCE)
317int	 acct(const char *);
318int	 closefrom(int);
319int	 des_cipher(const char *, char *, long, int);
320int	 des_setkey(const char *);
321int	 dup3(int, int, int);
322void	 endusershell(void);
323int	 exect(const char *, char * const *, char * const *);
324int	 fchroot(int);
325int	 fsync_range(int, int, off_t, off_t);
326int	 getdomainname(char *, size_t);
327int	 getgrouplist(const char *, gid_t, gid_t *, int *);
328int	 getgroupmembership(const char *, gid_t, gid_t *, int, int *);
329mode_t	 getmode(const void *, mode_t);
330char	*getpassfd(const char *, char *, size_t, int *, int, int);
331#define	GETPASS_NEED_TTY	0x001	/* Fail if we cannot set tty */
332#define	GETPASS_FAIL_EOF	0x002	/* Fail on EOF */
333#define	GETPASS_BUF_LIMIT	0x004	/* beep on buffer limit */
334#define	GETPASS_NO_SIGNAL	0x008	/* don't make ttychars send signals */
335#define	GETPASS_NO_BEEP		0x010	/* don't beep */
336#define	GETPASS_ECHO		0x020	/* echo characters as they are typed */
337#define	GETPASS_ECHO_STAR	0x040	/* echo '*' for each character */
338#define	GETPASS_7BIT		0x080	/* mask the high bit each char */
339#define	GETPASS_FORCE_LOWER	0x100	/* lowercase each char */
340#define	GETPASS_FORCE_UPPER	0x200	/* uppercase each char */
341#define	GETPASS_ECHO_NL		0x400	/* echo a newline if successful */
342
343char	*getpass_r(const char *, char *, size_t);
344int	 getpeereid(int, uid_t *, gid_t *);
345int	 getsubopt(char **, char * const *, char **);
346__aconst char *getusershell(void);
347int	 initgroups(const char *, gid_t);
348int	 iruserok(uint32_t, int, const char *, const char *);
349int      issetugid(void);
350int	 nfssvc(int, void *);
351int	 pipe2(int *, int);
352int	 profil(char *, size_t, u_long, u_int);
353#ifndef __PSIGNAL_DECLARED
354#define __PSIGNAL_DECLARED
355/* also in signal.h */
356void	 psignal(int, const char *);
357#endif /* __PSIGNAL_DECLARED */
358int	 rcmd(char **, int, const char *, const char *, const char *, int *);
359int	 reboot(int, char *);
360int	 revoke(const char *);
361int	 rresvport(int *);
362int	 ruserok(const char *, int, const char *, const char *);
363int	 setdomainname(const char *, size_t);
364int	 setgroups(int, const gid_t *);
365int	 sethostid(long);
366int	 sethostname(const char *, size_t);
367int	 setlogin(const char *);
368void	*setmode(const char *);
369int	 setrgid(gid_t);
370int	 setruid(uid_t);
371void	 setusershell(void);
372void	 strmode(mode_t, char *);
373#ifndef __STRSIGNAL_DECLARED
374#define __STRSIGNAL_DECLARED
375/* backwards-compatibility; also in string.h */
376__aconst char *strsignal(int);
377#endif /* __STRSIGNAL_DECLARED */
378int	 swapctl(int, void *, int);
379int	 swapon(const char *);			/* obsoleted by swapctl() */
380int	 syscall(int, ...);
381quad_t	 __syscall(quad_t, ...);
382int	 undelete(const char *);
383
384#if 1 /*INET6*/
385int	 rcmd_af(char **, int, const char *,
386	    const char *, const char *, int *, int);
387int	 rresvport_af(int *, int);
388int	 iruserok_sa(const void *, int, int, const char *, const char *);
389#endif
390
391#ifndef __SYS_SIGLIST_DECLARED
392#define __SYS_SIGLIST_DECLARED
393/* also in signal.h */
394extern const char *const *sys_siglist __RENAME(__sys_siglist14);
395#endif /* __SYS_SIGLIST_DECLARED */
396extern	 int optreset;		/* getopt(3) external variable */
397extern	 char *suboptarg;	/* getsubopt(3) external variable */
398#endif
399
400__END_DECLS
401#endif /* !_UNISTD_H_ */
402