unistd.h revision 1.142 
1/*	$NetBSD: unistd.h,v 1.142 2014/07/25 08:30:47 dholland 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 5; IEEE Std 1003.1-2001 (POSIX)
163 */
164#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 500 || \
165    defined(_NETBSD_SOURCE)
166#if __SSP_FORTIFY_LEVEL == 0
167ssize_t	 readlink(const char * __restrict, char * __restrict, size_t);
168#endif
169#endif
170
171/*
172 * The Open Group Base Specifications, Issue 6; IEEE Std 1003.1-2001 (POSIX)
173 */
174#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 600 || \
175    defined(_NETBSD_SOURCE)
176int	 posix_fallocate(int, off_t, off_t);
177int	 setegid(gid_t);
178int	 seteuid(uid_t);
179#endif
180
181/*
182 * The following three syscalls are also defined in <sys/types.h>
183 * We protect them against double declarations.
184 */
185#ifndef __OFF_T_SYSCALLS_DECLARED
186#define __OFF_T_SYSCALLS_DECLARED
187off_t	 lseek(int, off_t, int);
188int	 truncate(const char *, off_t);
189/*
190 * IEEE Std 1003.1b-93,
191 * also found in X/Open Portability Guide >= Issue 4 Verion 2
192 */
193#if (_POSIX_C_SOURCE - 0) >= 199309L || \
194    (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
195    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
196int	 ftruncate(int, off_t);
197#endif
198#endif /* __OFF_T_SYSCALLS_DECLARED */
199
200
201/*
202 * IEEE Std 1003.1b-93, adopted in X/Open CAE Specification Issue 5 Version 2
203 */
204#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
205    defined(_NETBSD_SOURCE)
206int	 fdatasync(int);
207int	 fsync(int);
208#endif
209
210
211/*
212 * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
213 */
214#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
215    defined(_REENTRANT) || defined(_NETBSD_SOURCE)
216int	 ttyname_r(int, char *, size_t);
217int	 pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
218#endif
219
220/*
221 * X/Open Portability Guide, all issues
222 */
223#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
224int	 chroot(const char *);
225int	 nice(int);
226#endif
227
228
229/*
230 * X/Open Portability Guide >= Issue 4
231 */
232#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
233__aconst char *crypt(const char *, const char *);
234int	 encrypt(char *, int);
235char	*getpass(const char *);
236pid_t	 getsid(pid_t);
237#endif
238
239
240/*
241 * X/Open Portability Guide >= Issue 4 Version 2
242 */
243#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
244    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
245#ifndef	intptr_t
246typedef	__intptr_t	intptr_t;
247#define	intptr_t	__intptr_t
248#endif
249
250#define F_ULOCK		0
251#define F_LOCK		1
252#define F_TLOCK		2
253#define F_TEST		3
254
255int	 brk(void *);
256int	 fchdir(int);
257#if defined(_XOPEN_SOURCE)
258int	 fchown(int, uid_t, gid_t) __RENAME(__posix_fchown);
259#else
260int	 fchown(int, uid_t, gid_t);
261#endif
262int	 getdtablesize(void);
263long	 gethostid(void);
264int	 gethostname(char *, size_t);
265__pure int
266	 getpagesize(void);		/* legacy */
267pid_t	 getpgid(pid_t);
268#if defined(_XOPEN_SOURCE)
269int	 lchown(const char *, uid_t, gid_t) __RENAME(__posix_lchown);
270#else
271int	 lchown(const char *, uid_t, gid_t);
272#endif
273int	 lockf(int, int, off_t);
274void	*sbrk(intptr_t);
275/* XXX prototype wrong! */
276int	 setpgrp(pid_t, pid_t);			/* obsoleted by setpgid() */
277int	 setregid(gid_t, gid_t);
278int	 setreuid(uid_t, uid_t);
279void	 swab(const void * __restrict, void * __restrict, ssize_t);
280int	 symlink(const char *, const char *);
281void	 sync(void);
282useconds_t ualarm(useconds_t, useconds_t);
283int	 usleep(useconds_t);
284#ifndef __LIBC12_SOURCE__
285pid_t	 vfork(void) __RENAME(__vfork14) __returns_twice;
286#endif
287
288#ifndef __AUDIT__
289char	*getwd(char *);				/* obsoleted by getcwd() */
290#endif
291#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
292
293
294/*
295 * X/Open CAE Specification Issue 5 Version 2
296 */
297#if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
298ssize_t	 pread(int, void *, size_t, off_t);
299ssize_t	 pwrite(int, const void *, size_t, off_t);
300#endif
301
302/*
303 * X/Open Extended API set 2 (a.k.a. C063)
304 */
305#if (_POSIX_C_SOURCE - 0) >= 200809L || (_XOPEN_SOURCE - 0 >= 700) || \
306    defined(_INCOMPLETE_XOPEN_C063) || defined(_NETBSD_SOURCE)
307int	linkat(int, const char *, int, const char *, int);
308int	renameat(int, const char *, int, const char *);
309int	faccessat(int, const char *, int, int);
310int	fchownat(int, const char *, uid_t, gid_t, int);
311int	readlinkat(int, const char *, char *, size_t);
312int	symlinkat(const char *, int, const char *);
313int	unlinkat(int, const char *, int);
314#endif
315#if defined(_INCOMPLETE_XOPEN_C063)
316int	fexecve(int, char * const *, char * const *);
317#endif
318
319
320/*
321 * Implementation-defined extensions
322 */
323#if defined(_NETBSD_SOURCE)
324int	 acct(const char *);
325int	 closefrom(int);
326int	 des_cipher(const char *, char *, long, int);
327int	 des_setkey(const char *);
328int	 dup3(int, int, int);
329void	 endusershell(void);
330int	 exect(const char *, char * const *, char * const *);
331int	 fchroot(int);
332int	 fdiscard(int, off_t, off_t);
333int	 fsync_range(int, int, off_t, off_t);
334int	 getdomainname(char *, size_t);
335int	 getgrouplist(const char *, gid_t, gid_t *, int *);
336int	 getgroupmembership(const char *, gid_t, gid_t *, int, int *);
337mode_t	 getmode(const void *, mode_t);
338char	*getpassfd(const char *, char *, size_t, int *, int, int);
339#define	GETPASS_NEED_TTY	0x001	/* Fail if we cannot set tty */
340#define	GETPASS_FAIL_EOF	0x002	/* Fail on EOF */
341#define	GETPASS_BUF_LIMIT	0x004	/* beep on buffer limit */
342#define	GETPASS_NO_SIGNAL	0x008	/* don't make ttychars send signals */
343#define	GETPASS_NO_BEEP		0x010	/* don't beep */
344#define	GETPASS_ECHO		0x020	/* echo characters as they are typed */
345#define	GETPASS_ECHO_STAR	0x040	/* echo '*' for each character */
346#define	GETPASS_7BIT		0x080	/* mask the high bit each char */
347#define	GETPASS_FORCE_LOWER	0x100	/* lowercase each char */
348#define	GETPASS_FORCE_UPPER	0x200	/* uppercase each char */
349#define	GETPASS_ECHO_NL		0x400	/* echo a newline if successful */
350
351char	*getpass_r(const char *, char *, size_t);
352int	 getpeereid(int, uid_t *, gid_t *);
353int	 getsubopt(char **, char * const *, char **);
354__aconst char *getusershell(void);
355int	 initgroups(const char *, gid_t);
356int	 iruserok(uint32_t, int, const char *, const char *);
357int      issetugid(void);
358int	 mkstemps(char *, int);
359int	 nfssvc(int, void *);
360int	 pipe2(int *, int);
361int	 profil(char *, size_t, u_long, u_int);
362#ifndef __PSIGNAL_DECLARED
363#define __PSIGNAL_DECLARED
364/* also in signal.h */
365void	 psignal(int, const char *);
366#endif /* __PSIGNAL_DECLARED */
367int	 rcmd(char **, int, const char *, const char *, const char *, int *);
368int	 reboot(int, char *);
369int	 revoke(const char *);
370int	 rresvport(int *);
371int	 ruserok(const char *, int, const char *, const char *);
372int	 setdomainname(const char *, size_t);
373int	 setgroups(int, const gid_t *);
374int	 sethostid(long);
375int	 sethostname(const char *, size_t);
376int	 setlogin(const char *);
377void	*setmode(const char *);
378int	 setrgid(gid_t);
379int	 setruid(uid_t);
380void	 setusershell(void);
381void	 strmode(mode_t, char *);
382#ifndef __STRSIGNAL_DECLARED
383#define __STRSIGNAL_DECLARED
384/* backwards-compatibility; also in string.h */
385__aconst char *strsignal(int);
386#endif /* __STRSIGNAL_DECLARED */
387int	 swapctl(int, void *, int);
388int	 swapon(const char *);			/* obsoleted by swapctl() */
389int	 syscall(int, ...);
390quad_t	 __syscall(quad_t, ...);
391int	 undelete(const char *);
392
393#if 1 /*INET6*/
394int	 rcmd_af(char **, int, const char *,
395	    const char *, const char *, int *, int);
396int	 rresvport_af(int *, int);
397int	 rresvport_af_addr(int *, int, void *);
398int	 iruserok_sa(const void *, int, int, const char *, const char *);
399#endif
400
401#ifndef __SYS_SIGLIST_DECLARED
402#define __SYS_SIGLIST_DECLARED
403/* also in signal.h */
404extern const char *const *sys_siglist __RENAME(__sys_siglist14);
405#endif /* __SYS_SIGLIST_DECLARED */
406extern	 int optreset;		/* getopt(3) external variable */
407extern	 char *suboptarg;	/* getsubopt(3) external variable */
408#endif
409
410__END_DECLS
411#endif /* !_UNISTD_H_ */
412