xref: /illumos-gate/usr/src/head/unistd.h (revision eec1faa8)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*	Copyright (c) 1988 AT&T	*/
22 /*	  All Rights Reserved  	*/
23 
24 
25 /*
26  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
27  * Use is subject to license terms.
28  */
29 
30 #ifndef _UNISTD_H
31 #define	_UNISTD_H
32 
33 #pragma ident	"%Z%%M%	%I%	%E% SMI"
34 
35 #include <sys/feature_tests.h>
36 
37 #include <sys/types.h>
38 #include <sys/unistd.h>
39 
40 #ifdef	__cplusplus
41 extern "C" {
42 #endif
43 
44 /* Symbolic constants for the "access" routine: */
45 #define	R_OK	4	/* Test for Read permission */
46 #define	W_OK	2	/* Test for Write permission */
47 #define	X_OK	1	/* Test for eXecute permission */
48 #define	F_OK	0	/* Test for existence of File */
49 
50 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
51 #define	F_ULOCK	0	/* Unlock a previously locked region */
52 #define	F_LOCK	1	/* Lock a region for exclusive use */
53 #define	F_TLOCK	2	/* Test and lock a region for exclusive use */
54 #define	F_TEST	3	/* Test a region for other processes locks */
55 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
56 
57 /* Symbolic constants for the "lseek" routine: */
58 
59 #ifndef	SEEK_SET
60 #define	SEEK_SET	0	/* Set file pointer to "offset" */
61 #endif
62 
63 #ifndef	SEEK_CUR
64 #define	SEEK_CUR	1	/* Set file pointer to current plus "offset" */
65 #endif
66 
67 #ifndef	SEEK_END
68 #define	SEEK_END	2	/* Set file pointer to EOF plus "offset" */
69 #endif
70 
71 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
72 #ifndef	SEEK_DATA
73 #define	SEEK_DATA	3	/* Set file pointer to next data past offset */
74 #endif
75 
76 #ifndef	SEEK_HOLE
77 #define	SEEK_HOLE	4	/* Set file pointer to next hole past offset */
78 #endif
79 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
80 
81 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
82 /* Path names: */
83 #define	GF_PATH	"/etc/group"	/* Path name of the "group" file */
84 #define	PF_PATH	"/etc/passwd"	/* Path name of the "passwd" file */
85 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
86 
87 /*
88  * compile-time symbolic constants,
89  * Support does not mean the feature is enabled.
90  * Use pathconf/sysconf to obtain actual configuration value.
91  */
92 
93 /* Values unchanged in UNIX 03 */
94 #define	_POSIX_ASYNC_IO			1
95 #define	_POSIX_JOB_CONTROL		1
96 #define	_POSIX_SAVED_IDS		1
97 #define	_POSIX_SYNC_IO			1
98 
99 /*
100  * POSIX.1b compile-time symbolic constants.
101  */
102 #if defined(_XPG6)
103 #define	_POSIX_ASYNCHRONOUS_IO		200112L
104 #define	_POSIX_FSYNC			200112L
105 #define	_POSIX_MAPPED_FILES		200112L
106 #define	_POSIX_MEMLOCK			200112L
107 #define	_POSIX_MEMLOCK_RANGE		200112L
108 #define	_POSIX_MEMORY_PROTECTION	200112L
109 #define	_POSIX_MESSAGE_PASSING		200112L
110 #define	_POSIX_PRIORITY_SCHEDULING	200112L
111 #define	_POSIX_REALTIME_SIGNALS		200112L
112 #define	_POSIX_SEMAPHORES		200112L
113 #define	_POSIX_SHARED_MEMORY_OBJECTS	200112L
114 #define	_POSIX_SYNCHRONIZED_IO		200112L
115 #else
116 #define	_POSIX_ASYNCHRONOUS_IO		1
117 #define	_POSIX_FSYNC			1
118 #define	_POSIX_MAPPED_FILES		1
119 #define	_POSIX_MEMLOCK			1
120 #define	_POSIX_MEMLOCK_RANGE		1
121 #define	_POSIX_MEMORY_PROTECTION	1
122 #define	_POSIX_MESSAGE_PASSING		1
123 #define	_POSIX_PRIORITY_SCHEDULING	1
124 #define	_POSIX_REALTIME_SIGNALS		1
125 #define	_POSIX_SEMAPHORES		1
126 #define	_POSIX_SHARED_MEMORY_OBJECTS	1
127 #define	_POSIX_SYNCHRONIZED_IO		1
128 #endif
129 
130 /*
131  * POSIX.1c compile-time symbolic constants.
132  */
133 #if defined(_XPG6)
134 #define	_POSIX_THREAD_SAFE_FUNCTIONS		200112L
135 #define	_POSIX_THREADS				200112L
136 #define	_POSIX_THREAD_ATTR_STACKADDR		200112L
137 #define	_POSIX_THREAD_ATTR_STACKSIZE		200112L
138 #define	_POSIX_THREAD_PROCESS_SHARED		200112L
139 #define	_POSIX_THREAD_PRIORITY_SCHEDULING	200112L
140 #define	_POSIX_TIMERS				200112L
141 #else
142 #define	_POSIX_THREAD_SAFE_FUNCTIONS		1
143 #define	_POSIX_THREADS				1
144 #define	_POSIX_THREAD_ATTR_STACKADDR		1
145 #define	_POSIX_THREAD_ATTR_STACKSIZE		1
146 #define	_POSIX_THREAD_PROCESS_SHARED		1
147 #define	_POSIX_THREAD_PRIORITY_SCHEDULING	1
148 #define	_POSIX_TIMERS				1
149 #endif
150 
151 /* New in UNIX 03 */
152 #define	_POSIX_BARRIERS				200112L
153 #define	_POSIX_CLOCK_SELECTION			200112L
154 #define	_POSIX_IPV6				200112L
155 #define	_POSIX_MONOTONIC_CLOCK			200112L
156 #define	_POSIX_RAW_SOCKETS			200112L
157 #define	_POSIX_READER_WRITER_LOCKS		200112L
158 #define	_POSIX_SPAWN				200112L
159 #define	_POSIX_SPIN_LOCKS			200112L
160 #define	_POSIX_TIMEOUTS				200112L
161 
162 /*
163  * Support for the POSIX.1 mutex protocol attribute. For realtime applications
164  * which need mutexes to support priority inheritance/ceiling.
165  */
166 #if defined(_XPG6)
167 #define	_POSIX_THREAD_PRIO_INHERIT	200112L
168 #define	_POSIX_THREAD_PRIO_PROTECT	200112L
169 #else
170 #define	_POSIX_THREAD_PRIO_INHERIT	1
171 #define	_POSIX_THREAD_PRIO_PROTECT	1
172 #endif
173 
174 #ifndef _POSIX_VDISABLE
175 #define	_POSIX_VDISABLE		0
176 #endif
177 
178 #ifndef NULL
179 #if defined(_LP64)
180 #define	NULL	0L
181 #else
182 #define	NULL	0
183 #endif
184 #endif
185 
186 #define	STDIN_FILENO	0
187 #define	STDOUT_FILENO	1
188 #define	STDERR_FILENO	2
189 
190 /*
191  * Large File Summit-related announcement macros.  The system supports both
192  * the additional and transitional Large File Summit interfaces.  (The final
193  * two macros provide a finer granularity breakdown of _LFS64_LARGEFILE.)
194  */
195 #define	_LFS_LARGEFILE		1
196 #define	_LFS64_LARGEFILE	1
197 #define	_LFS64_STDIO		1
198 #define	_LFS64_ASYNCHRONOUS_IO	1
199 
200 /* large file compilation environment setup */
201 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
202 #ifdef	__PRAGMA_REDEFINE_EXTNAME
203 #pragma redefine_extname	ftruncate	ftruncate64
204 #pragma redefine_extname	lseek		lseek64
205 #pragma redefine_extname	pread		pread64
206 #pragma redefine_extname	pwrite		pwrite64
207 #pragma redefine_extname	truncate	truncate64
208 #pragma redefine_extname	lockf		lockf64
209 #pragma	redefine_extname	tell		tell64
210 #else	/* __PRAGMA_REDEFINE_EXTNAME */
211 #define	ftruncate			ftruncate64
212 #define	lseek				lseek64
213 #define	pread				pread64
214 #define	pwrite				pwrite64
215 #define	truncate			truncate64
216 #define	lockf				lockf64
217 #define	tell				tell64
218 #endif	/* __PRAGMA_REDEFINE_EXTNAME */
219 #endif	/* !_LP64 && _FILE_OFFSET_BITS == 64 */
220 
221 /* In the LP64 compilation environment, the APIs are already large file */
222 #if defined(_LP64) && defined(_LARGEFILE64_SOURCE)
223 #ifdef	__PRAGMA_REDEFINE_EXTNAME
224 #pragma redefine_extname	ftruncate64	ftruncate
225 #pragma redefine_extname	lseek64		lseek
226 #pragma redefine_extname	pread64		pread
227 #pragma redefine_extname	pwrite64	pwrite
228 #pragma redefine_extname	truncate64	truncate
229 #pragma redefine_extname	lockf64		lockf
230 #pragma redefine_extname	tell64		tell
231 #else	/* __PRAGMA_REDEFINE_EXTNAME */
232 #define	ftruncate64			ftruncate
233 #define	lseek64				lseek
234 #define	pread64				pread
235 #define	pwrite64			pwrite
236 #define	truncate64			truncate
237 #define	lockf64				lockf
238 #define	tell64				tell
239 #endif	/* __PRAGMA_REDEFINE_EXTNAME */
240 #endif	/* _LP64 && _LARGEFILE64_SOURCE */
241 
242 #if defined(__STDC__)
243 
244 extern int access(const char *, int);
245 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
246 extern int acct(const char *);
247 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
248 extern unsigned alarm(unsigned);
249 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
250 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
251 	defined(__EXTENSIONS__)
252 extern int brk(void *);
253 #endif /* !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2)... */
254 extern int chdir(const char *);
255 extern int chown(const char *, uid_t, gid_t);
256 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
257 #if !defined(_POSIX_C_SOURCE) || (defined(_XOPEN_SOURCE) && \
258 	!defined(_XPG6)) || defined(__EXTENSIONS__)
259 extern int chroot(const char *);
260 #endif /* !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE))... */
261 extern int close(int);
262 #if defined(_XPG4) || defined(__EXTENSIONS__)
263 extern size_t confstr(int, char *, size_t);
264 extern char *crypt(const char *, const char *);
265 #endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
266 #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
267 	defined(__EXTENSIONS__)
268 extern char *ctermid(char *);
269 #endif /* (!defined(_POSIX_C_SOURCE) ... */
270 #if !defined(__XOPEN_OR_POSIX) || defined(_REENTRANT) || defined(__EXTENSIONS_)
271 extern char *ctermid_r(char *);
272 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_REENTRANT) ... */
273 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
274 #if !defined(_XPG6) || defined(__EXTENSIONS__)
275 extern char *cuserid(char *);
276 #endif
277 extern int dup(int);
278 extern int dup2(int, int);
279 #if defined(_XPG4) || defined(__EXTENSIONS__)
280 extern void encrypt(char *, int);
281 #endif /* defined(XPG4) || defined(__EXTENSIONS__) */
282 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
283 extern void endusershell(void);
284 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
285 extern int execl(const char *, const char *, ...);
286 extern int execle(const char *, const char *, ...);
287 extern int execlp(const char *, const char *, ...);
288 extern int execv(const char *, char *const *);
289 extern int execve(const char *, char *const *, char *const *);
290 extern int execvp(const char *, char *const *);
291 extern void _exit(int)
292 	__NORETURN;
293 /*
294  * The following fattach prototype is duplicated in <stropts.h>. The
295  * duplication is necessitated by XPG4.2 which requires the prototype
296  * be defined in <stropts.h>.
297  */
298 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
299 extern int fattach(int, const char *);
300 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
301 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
302 extern int fchdir(int);
303 extern int fchown(int, uid_t, gid_t);
304 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
305 	defined(__EXTENSIONS__)
306 extern int fchownat(int, const char *, uid_t, gid_t, int);
307 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
308 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
309 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
310 extern int fchroot(int);
311 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
312 #if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || \
313 	defined(__EXTENSIONS__)
314 extern int fdatasync(int);
315 #endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
316 /*
317  * The following fdetach prototype is duplicated in <stropts.h>. The
318  * duplication is necessitated by XPG4.2 which requires the prototype
319  * be defined in <stropts.h>.
320  */
321 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
322 extern int fdetach(const char *);
323 #endif /* !defined(__XOPEN_OR_POSIX)... */
324 extern pid_t fork(void);
325 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
326 extern pid_t fork1(void);
327 extern pid_t forkall(void);
328 #endif /* !defined(__XOPEN_OR_POSIX)... */
329 extern long fpathconf(int, int);
330 #if !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2) || \
331 	defined(__EXTENSIONS__)
332 extern int fsync(int);
333 #endif /* !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2)... */
334 #if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || defined(_XPG4_2) || \
335 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
336 	defined(__EXTENSIONS__)
337 extern int ftruncate(int, off_t);
338 #endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
339 extern char *getcwd(char *, size_t);
340 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
341 	defined(__EXTENSIONS__)
342 extern int getdtablesize(void);
343 #endif
344 extern gid_t getegid(void);
345 extern uid_t geteuid(void);
346 extern gid_t getgid(void);
347 extern int getgroups(int, gid_t *);
348 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
349 extern long gethostid(void);
350 #endif
351 #if defined(_XPG4_2)
352 extern int gethostname(char *, size_t);
353 #elif  !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
354 extern int gethostname(char *, int);
355 #endif
356 extern char *getlogin(void);
357 #if defined(_XPG4) || defined(__EXTENSIONS__)
358 extern int  getopt(int, char *const *, const char *);
359 extern char *optarg;
360 extern int  opterr, optind, optopt;
361 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
362 #if !defined(_XPG6) || defined(__EXTENSIONS__)
363 extern char *getpass(const char *);
364 #endif
365 #endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
366 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
367 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
368 #if !defined(_XPG6) || defined(__EXTENSIONS__)
369 extern int getpagesize(void);
370 #endif
371 extern pid_t getpgid(pid_t);
372 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
373 extern pid_t getpid(void);
374 extern pid_t getppid(void);
375 extern pid_t getpgrp(void);
376 
377 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
378 char *gettxt(const char *, const char *);
379 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
380 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
381 extern pid_t getsid(pid_t);
382 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
383 extern uid_t getuid(void);
384 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
385 extern char *getusershell(void);
386 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
387 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
388 extern char *getwd(char *);
389 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
390 /*
391  * The following ioctl prototype is duplicated in <stropts.h>. The
392  * duplication is necessitated by XPG4.2 which requires the prototype
393  * be defined in <stropts.h>.
394  */
395 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
396 extern int ioctl(int, int, ...);
397 extern int isaexec(const char *, char *const *, char *const *);
398 extern int issetugid(void);
399 #endif
400 extern int isatty(int);
401 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
402 extern int lchown(const char *, uid_t, gid_t);
403 #endif
404 extern int link(const char *, const char *);
405 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
406 extern offset_t llseek(int, offset_t, int);
407 #endif
408 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
409 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
410 	defined(__EXTENSIONS__)
411 extern int lockf(int, int, off_t);
412 #endif
413 extern off_t lseek(int, off_t, int);
414 #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
415 	defined(__EXTENSIONS__)
416 extern int nice(int);
417 #endif /* !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)... */
418 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
419 extern int mincore(caddr_t, size_t, char *);
420 #endif
421 extern long pathconf(const char *, int);
422 extern int pause(void);
423 extern int pipe(int *);
424 #if !defined(_POSIX_C_SOURCE) || defined(_XPG5) || \
425 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
426 	defined(__EXTENSIONS__)
427 extern ssize_t pread(int, void *, size_t, off_t);
428 #endif
429 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
430 extern void profil(unsigned short *, size_t, unsigned long, unsigned int);
431 #endif
432 /*
433  * pthread_atfork() is also declared in <pthread.h> as per SUSv3. The
434  * declarations are identical. A change to either one may also require
435  * appropriate namespace updates in order to avoid redeclaration
436  * warnings in the case where both prototypes are exposed via inclusion
437  * of both <pthread.h> and <unistd.h>.
438  */
439 #if !defined(__XOPEN_OR_POSIX) || \
440 	((_POSIX_C_SOURCE > 2) && !defined(_XPG6)) || \
441 	defined(__EXTENSIONS__)
442 extern int pthread_atfork(void (*) (void), void (*) (void), void (*) (void));
443 #endif /* !defined(__XOPEN_OR_POSIX) || ((_POSIX_C_SOURCE > 2) ... */
444 #if !defined(_LP64) && \
445 	(!defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__))
446 extern int ptrace(int, pid_t, int, int);
447 #endif
448 #if !defined(_POSIX_C_SOURCE) || defined(_XPG5) || \
449 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
450 	defined(__EXTENSIONS__)
451 extern ssize_t pwrite(int, const void *, size_t, off_t);
452 #endif
453 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
454 /* per RFC 3542; This is also defined in netdb.h */
455 extern int rcmd_af(char **, unsigned short, const char *, const char *,
456 	const char *, int *, int);
457 #endif
458 extern ssize_t read(int, void *, size_t);
459 #if !defined(__XOPEN_OR_POSIX) || \
460 	defined(_XPG4_2) || defined(__EXTENSIONS__)
461 extern ssize_t readlink(const char *_RESTRICT_KYWD, char *_RESTRICT_KYWD,
462 	size_t);
463 #endif
464 #if (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3) && !defined(_XPG4))) || \
465 	defined(__EXTENSIONS__)
466 extern int rename(const char *, const char *);
467 #endif /* (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3)... */
468 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
469 	defined(__EXTENSIONS__)
470 extern int renameat(int, const char *, int, const char *);
471 #endif /* !defined(__XOPEN_OR_POSIX || defined(_ATFILE_SOURCE)... */
472 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
473 extern int resolvepath(const char *, char *, size_t);
474 /* per RFC 3542; This is also defined in netdb.h */
475 extern int rexec_af(char **, unsigned short, const char *, const char *,
476 	const char *, int *, int);
477 #endif /* !defined(__XOPEN_OR_POSIX)|| defined(__EXTENSIONS__) */
478 extern int rmdir(const char *);
479 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
480 /* per RFC 3542; This is also defined in netdb.h */
481 extern int rresvport_af(int *, int);
482 #endif
483 
484 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
485 	defined(__EXTENSIONS__)
486 extern void *sbrk(intptr_t);
487 #endif /* !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2)... */
488 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__)
489 extern int setegid(gid_t);
490 extern int seteuid(uid_t);
491 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */
492 extern int setgid(gid_t);
493 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
494 extern int setgroups(int, const gid_t *);
495 extern int sethostname(char *, int);
496 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
497 extern int setpgid(pid_t, pid_t);
498 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
499 extern pid_t setpgrp(void);
500 extern int setregid(gid_t, gid_t);
501 extern int setreuid(uid_t, uid_t);
502 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
503 extern pid_t setsid(void);
504 extern int setuid(uid_t);
505 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
506 extern void setusershell(void);
507 #endif /* !defined(__XOPEN_OR_POSIX)|| defined(__EXTENSIONS__) */
508 extern unsigned sleep(unsigned);
509 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
510 extern int stime(const time_t *);
511 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
512 #if defined(_XPG4)
513 /* __EXTENSIONS__ makes the SVID Third Edition prototype in stdlib.h visible */
514 extern void swab(const void *_RESTRICT_KYWD, void *_RESTRICT_KYWD, ssize_t);
515 #endif /* defined(_XPG4) */
516 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
517 extern int symlink(const char *, const char *);
518 extern void sync(void);
519 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) */
520 #if defined(_XPG5) && !defined(_XPG6)
521 #ifdef __PRAGMA_REDEFINE_EXTNAME
522 #pragma redefine_extname sysconf __sysconf_xpg5
523 #else /* __PRAGMA_REDEFINE_EXTNAME */
524 #define	sysconf __sysconf_xpg5
525 #endif  /* __PRAGMA_REDEFINE_EXTNAME */
526 #endif /* defined(_XPG5) && !defined(_XPG6) */
527 extern long sysconf(int);
528 extern pid_t tcgetpgrp(int);
529 extern int tcsetpgrp(int, pid_t);
530 #if !defined(__XOPEN_OR_POSIX) || \
531 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
532 	defined(__EXTENSIONS__)
533 extern off_t tell(int);
534 #endif /* !defined(__XOPEN_OR_POSIX)... */
535 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
536 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
537 	defined(__EXTENSIONS__)
538 extern int truncate(const char *, off_t);
539 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
540 extern char *ttyname(int);
541 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
542 extern useconds_t ualarm(useconds_t, useconds_t);
543 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
544 extern int unlink(const char *);
545 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
546 	defined(__EXTENSIONS__)
547 extern int unlinkat(int, const char *, int);
548 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
549 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
550 extern int usleep(useconds_t);
551 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
552 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
553 extern pid_t vfork(void);
554 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
555 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
556 extern void vhangup(void);
557 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
558 extern ssize_t write(int, const void *, size_t);
559 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
560 extern void yield(void);
561 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
562 
563 /* transitional large file interface versions */
564 #if	defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
565 	    !defined(__PRAGMA_REDEFINE_EXTNAME))
566 extern int ftruncate64(int, off64_t);
567 extern off64_t lseek64(int, off64_t, int);
568 extern ssize_t	pread64(int, void *, size_t, off64_t);
569 extern ssize_t	pwrite64(int, const void *, size_t, off64_t);
570 extern off64_t	tell64(int);
571 extern int	truncate64(const char *, off64_t);
572 extern int	lockf64(int, int, off64_t);
573 #endif	/* _LARGEFILE64_SOURCE */
574 
575 #else  /* __STDC__ */
576 
577 extern int access();
578 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
579 extern int acct();
580 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
581 extern unsigned alarm();
582 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
583 	defined(__EXTENSIONS__)
584 extern int brk();
585 #endif /* !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2)... */
586 extern int chdir();
587 extern int chown();
588 #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
589 	defined(__EXTENSIONS__)
590 extern int chroot();
591 #endif /* (!defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)... */
592 extern int close();
593 #if defined(_XPG4) || defined(__EXTENSIONS__)
594 extern size_t confstr();
595 extern char *crypt();
596 #endif /* defined(XPG4) || defined(__EXTENSIONS__) */
597 #if !defined(_POSIX_C_SOURCE) || defined(_XPG3) || defined(__EXTENSIONS__)
598 extern char *ctermid();
599 #endif /* (!defined(_POSIX_C_SOURCE) || defined(_XPG3)... */
600 #if !defined(__XOPEN_OR_POSIX) || defined(_REENTRANT) || defined(__EXTENSIONS_)
601 extern char *ctermid_r();
602 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_REENTRANT) ... */
603 #if !defined(_XPG6) || defined(__EXTENSIONS__)
604 extern char *cuserid();
605 #endif
606 extern int dup();
607 extern int dup2();
608 #if defined(_XPG4) || defined(__EXTENSIONS__)
609 extern void encrypt();
610 #endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
611 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
612 extern void endusershell();
613 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
614 extern int execl();
615 extern int execle();
616 extern int execlp();
617 extern int execv();
618 extern int execve();
619 extern int execvp();
620 extern void _exit();
621 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
622 extern int fattach();
623 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
624 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
625 extern int fchdir();
626 extern int fchown();
627 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
628 	defined(__EXTENSIONS__)
629 extern int fchownat();
630 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
631 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
632 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
633 extern int fchroot();
634 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
635 #if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || \
636 	defined(__EXTENSIONS__)
637 extern int fdatasync();
638 #endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
639 #if !defined(__XOPEN_OR_POSIX)
640 extern int fdetach();
641 #endif /* !defined(__XOPEN_OR_POSIX) */
642 extern pid_t fork();
643 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
644 extern pid_t fork1();
645 extern pid_t forkall();
646 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
647 extern long fpathconf();
648 #if !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2) || \
649 	defined(__EXTENSIONS__)
650 extern int fsync();
651 #endif /* !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2)... */
652 #if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || defined(_XPG4_2) || \
653 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
654 	defined(__EXTENSIONS__)
655 extern int ftruncate();
656 #endif /* !defined(__XOPEN_OR_POSIX) (_POSIX_C_SOURCE > 2)... */
657 extern char *getcwd();
658 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
659 	defined(__EXTENSIONS__)
660 extern int getdtablesize();
661 #endif
662 extern gid_t getegid();
663 extern uid_t geteuid();
664 extern gid_t getgid();
665 extern int getgroups();
666 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
667 extern long gethostid();
668 #endif
669 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
670 extern int gethostname();
671 #endif
672 extern char *getlogin();
673 #if defined(_XPG4) || defined(__EXTENSIONS__)
674 extern int  getopt();
675 extern char *optarg;
676 extern int  opterr, optind, optopt;
677 #if !defined(_XPG6) || defined(__EXTENSIONS__)
678 extern char *getpass();
679 #endif
680 #endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
681 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
682 #if !defined(_XPG6) || defined(__EXTENSIONS__)
683 extern int getpagesize();
684 #endif
685 extern pid_t getpgid();
686 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
687 extern pid_t getpid();
688 extern pid_t getppid();
689 extern pid_t getpgrp();
690 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
691 char *gettxt();
692 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
693 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
694 extern pid_t getsid();
695 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) */
696 extern uid_t getuid();
697 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
698 extern char *getusershell();
699 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
700 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
701 extern char *getwd();
702 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
703 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
704 extern int ioctl();
705 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
706 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
707 extern int isaexec();
708 extern int issetugid();
709 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
710 extern int isatty();
711 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
712 extern int lchown();
713 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) */
714 extern int link();
715 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
716 extern offset_t llseek();
717 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
718 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
719 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
720 	defined(__EXTENSIONS__)
721 extern int lockf();
722 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
723 extern off_t lseek();
724 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
725 extern int mincore();
726 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
727 #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
728 	defined(__EXTENSIONS__)
729 extern int nice();
730 #endif /* !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)... */
731 extern long pathconf();
732 extern int pause();
733 extern int pipe();
734 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG5) || \
735 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
736 	defined(__EXTENSIONS__)
737 extern ssize_t pread();
738 #endif
739 #if !defined(_LP64) && \
740 	(!defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__))
741 extern void profil();
742 extern int ptrace();
743 #endif
744 #if !defined(__XOPEN_OR_POSIX) || \
745 	((_POSIX_C_SOURCE > 2) && !defined(_XPG6)) || \
746 	defined(__EXTENSIONS__)
747 extern int pthread_atfork();
748 #endif /* !defined(__XOPEN_OR_POSIX) || ((_POSIX_C_SOURCE > 2) ...  */
749 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG5) || \
750 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
751 	defined(__EXTENSIONS__)
752 extern ssize_t pwrite();
753 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG5) */
754 extern ssize_t read();
755 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
756 /* per RFC 3542; This is also defined in netdb.h */
757 extern int rcmd_af();
758 #endif
759 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
760 extern ssize_t readlink();
761 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
762 #if (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3) && !defined(_XPG4))) || \
763 	defined(__EXTENSIONS__)
764 extern int rename();
765 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
766 	defined(__EXTENSIONS__)
767 extern int renameat();
768 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
769 #endif /* (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3)... */
770 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
771 extern int resolvepath();
772 /* per RFC 3542; This is also defined in netdb.h */
773 extern int rexec_af();
774 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
775 extern int rmdir();
776 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
777 /* per RFC 3542; This is also defined in netdb.h */
778 extern int rresvport_af();
779 #endif
780 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
781 	defined(__EXTENSIONS__)
782 extern void *sbrk();
783 #endif /* !defined(__XOPEN_OR_POSIX)|| (defined(_XPG4_2)... */
784 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__)
785 extern int setegid();
786 extern int seteuid();
787 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */
788 extern int setgid();
789 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
790 extern int setgroups();
791 extern int sethostname();
792 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
793 extern int setpgid();
794 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
795 extern pid_t setpgrp();
796 extern int setregid();
797 extern int setreuid();
798 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
799 extern pid_t setsid();
800 extern int setuid();
801 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
802 extern void setusershell();
803 #endif /* !defined(__XOPEN_OR_POSIX)|| defined(__EXTENSIONS__) */
804 extern unsigned sleep();
805 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
806 extern int stime();
807 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
808 #if defined(_XPG4)
809 /* __EXTENSIONS__ makes the SVID Third Edition prototype in stdlib.h visible */
810 extern void swab();
811 #endif /* defined(_XPG4) */
812 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
813 extern int symlink();
814 extern void sync();
815 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
816 #if defined(_XPG5)
817 #ifdef __PRAGMA_REDEFINE_EXTNAME
818 #pragma redefine_extname sysconf __sysconf_xpg5
819 extern long sysconf();
820 #else /* __PRAGMA_REDEFINE_EXTNAME */
821 extern long __sysconf_xpg5();
822 #define	sysconf __sysconf_xpg5
823 #endif  /* __PRAGMA_REDEFINE_EXTNAME */
824 #endif	/* defined(_XPG5) */
825 extern pid_t tcgetpgrp();
826 extern int tcsetpgrp();
827 #if !defined(__XOPEN_OR_POSIX) || \
828 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
829 	defined(__EXTENSIONS__)
830 extern off_t tell();
831 #endif /* !defined(__XOPEN_OR_POSIX)... */
832 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
833 	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
834 	defined(__EXTENSIONS__)
835 extern int truncate();
836 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
837 extern char *ttyname();
838 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
839 extern useconds_t ualarm();
840 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
841 extern int unlink();
842 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
843 	defined(__EXTENSIONS__)
844 extern int unlinkat();
845 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
846 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
847 extern int usleep();
848 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
849 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
850 extern pid_t vfork();
851 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
852 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
853 extern void vhangup();
854 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
855 extern ssize_t write();
856 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
857 extern void yield();
858 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
859 
860 /* transitional large file interface versions */
861 #if	defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
862 	    !defined(__PRAGMA_REDEFINE_EXTNAME))
863 extern int ftruncate64();
864 extern off64_t lseek64();
865 extern ssize_t pread64();
866 extern ssize_t pwrite64();
867 extern off64_t tell64();
868 extern int truncate64();
869 extern int lockf64();
870 #endif	/* _LARGEFILE64_SOURCE */
871 
872 #endif /* __STDC__ */
873 
874 /*
875  * This atrocity is necessary on sparc because registers modified
876  * by the child get propagated back to the parent via the window
877  * save/restore mechanism.
878  */
879 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
880 #if defined(__sparc)
881 #pragma unknown_control_flow(vfork)
882 #endif
883 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
884 
885 /*
886  * getlogin_r() & ttyname_r() prototypes are defined here.
887  */
888 
889 /*
890  * Previous releases of Solaris, starting at 2.3, provided definitions of
891  * various functions as specified in POSIX.1c, Draft 6.  For some of these
892  * functions, the final POSIX 1003.1c standard had a different number of
893  * arguments and return values.
894  *
895  * The following segment of this header provides support for the standard
896  * interfaces while supporting applications written under earlier
897  * releases.  The application defines appropriate values of the feature
898  * test macros _POSIX_C_SOURCE and _POSIX_PTHREAD_SEMANTICS to indicate
899  * whether it was written to expect the Draft 6 or standard versions of
900  * these interfaces, before including this header.  This header then
901  * provides a mapping from the source version of the interface to an
902  * appropriate binary interface.  Such mappings permit an application
903  * to be built from libraries and objects which have mixed expectations
904  * of the definitions of these functions.
905  *
906  * For applications using the Draft 6 definitions, the binary symbol is the
907  * same as the source symbol, and no explicit mapping is needed.  For the
908  * standard interface, the function func() is mapped to the binary symbol
909  * _posix_func().  The preferred mechanism for the remapping is a compiler
910  * #pragma.  If the compiler does not provide such a #pragma, the header file
911  * defines a static function func() which calls the _posix_func() version;
912  * this has to be done instead of #define since POSIX specifies that an
913  * application can #undef the symbol and still be bound to the correct
914  * implementation.  Unfortunately, the statics confuse lint so we fallback to
915  * #define in that case.
916  *
917  * NOTE: Support for the Draft 6 definitions is provided for compatibility
918  * only.  New applications/libraries should use the standard definitions.
919  */
920 
921 #if	defined(__EXTENSIONS__) || defined(_REENTRANT) || \
922 	!defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE - 0 >= 199506L) || \
923 	defined(_POSIX_PTHREAD_SEMANTICS)
924 
925 #if	defined(__STDC__)
926 
927 #if	(_POSIX_C_SOURCE - 0 >= 199506L) || defined(_POSIX_PTHREAD_SEMANTICS)
928 
929 #ifdef __PRAGMA_REDEFINE_EXTNAME
930 #pragma redefine_extname getlogin_r __posix_getlogin_r
931 #pragma redefine_extname ttyname_r __posix_ttyname_r
932 extern int getlogin_r(char *, int);
933 extern int ttyname_r(int, char *, size_t);
934 #else  /* __PRAGMA_REDEFINE_EXTNAME */
935 
936 extern int __posix_getlogin_r(char *, int);
937 extern int __posix_ttyname_r(int, char *, size_t);
938 
939 #ifdef __lint
940 
941 #define	getlogin_r	__posix_getlogin_r
942 #define	ttyname_r	__posix_ttyname_r
943 
944 #else /* !__lint */
945 
946 static int
947 getlogin_r(char *__name, int __len)
948 {
949 	return (__posix_getlogin_r(__name, __len));
950 }
951 static int
952 ttyname_r(int __fildes, char *__buf, size_t __size)
953 {
954 	return (__posix_ttyname_r(__fildes, __buf, __size));
955 }
956 
957 #endif /* !__lint */
958 #endif /* __PRAGMA_REDEFINE_EXTNAME */
959 
960 #else  /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */
961 
962 extern char *getlogin_r(char *, int);
963 extern char *ttyname_r(int, char *, int);
964 
965 #endif /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */
966 
967 #else  /* __STDC__ */
968 
969 #if (_POSIX_C_SOURCE - 0 >= 199506L) || defined(_POSIX_PTHREAD_SEMANTICS)
970 
971 #ifdef __PRAGMA_REDEFINE_EXTNAME
972 #pragma redefine_extname getlogin_r __posix_getlogin_r
973 #pragma redefine_extname ttyname_r __posix_ttyname_r
974 extern int getlogin_r();
975 extern int ttyname_r();
976 #else  /* __PRAGMA_REDEFINE_EXTNAME */
977 
978 extern int __posix_getlogin_r();
979 extern int __posix_ttyname_r();
980 
981 #ifdef	__lint
982 
983 #define	getlogin_r	__posix_getlogin_r
984 #define	ttyname_r	__posix_ttyname_r
985 
986 #else /* !__lint */
987 
988 static int
989 getlogin_r(__name, __len)
990 	char *__name;
991 	int __len;
992 {
993 	return (__posix_getlogin_r(__name, __len));
994 }
995 static int
996 ttyname_r(__fildes, __buf, __size)
997 	int __fildes;
998 	char *__buf;
999 	size_t __size;
1000 {
1001 	return (__posix_ttyname_r(__fildes, __buf, __size));
1002 }
1003 #endif /* !__lint */
1004 #endif /* __PRAGMA_REDEFINE_EXTNAME */
1005 
1006 #else  /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */
1007 
1008 extern char *getlogin_r();
1009 extern char *ttyname_r();
1010 
1011 #endif /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */
1012 
1013 #endif /* __STDC__ */
1014 
1015 #endif /* defined(__EXTENSIONS__) || defined(_REENTRANT)... */
1016 
1017 #ifdef	__cplusplus
1018 }
1019 #endif
1020 
1021 #endif /* _UNISTD_H */
1022