include/unistd.h

   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
  22 /*
  23  * Copyright 2014 PALO, Richard.
  24  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  25  * Copyright (c) 2013 Gary Mills
  26  *
  27  * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
  28  */
  29
  30 /*      Copyright (c) 1988 AT&T */
  31 /*        All Rights Reserved   */
  32
  33 /* Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved. */
  34
  35 #ifndef _UNISTD_H
  36 #define _UNISTD_H
  37
  38 #include <sys/feature_tests.h>
  39
  40 #include <sys/null.h>
  41 #include <sys/types.h>
  42 #include <sys/unistd.h>
  43
  44 #ifdef  __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 /* Symbolic constants for the "access" routine: */
  49 #define R_OK    4       /* Test for Read permission */
  50 #define W_OK    2       /* Test for Write permission */
  51 #define X_OK    1       /* Test for eXecute permission */
  52 #define F_OK    0       /* Test for existence of File */
  53
  54 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
  55 #define F_ULOCK 0       /* Unlock a previously locked region */
  56 #define F_LOCK  1       /* Lock a region for exclusive use */
  57 #define F_TLOCK 2       /* Test and lock a region for exclusive use */
  58 #define F_TEST  3       /* Test a region for other processes locks */
  59 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
  60
  61 /* Symbolic constants for the "lseek" routine: */
  62
  63 #ifndef SEEK_SET
  64 #define SEEK_SET        0       /* Set file pointer to "offset" */
  65 #endif
  66
  67 #ifndef SEEK_CUR
  68 #define SEEK_CUR        1       /* Set file pointer to current plus "offset" */
  69 #endif
  70
  71 #ifndef SEEK_END
  72 #define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
  73 #endif
  74
  75 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  76 #ifndef SEEK_DATA
  77 #define SEEK_DATA       3       /* Set file pointer to next data past offset */
  78 #endif
  79
  80 #ifndef SEEK_HOLE
  81 #define SEEK_HOLE       4       /* Set file pointer to next hole past offset */
  82 #endif
  83 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  84
  85 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  86 /* Path names: */
  87 #define GF_PATH "/etc/group"    /* Path name of the "group" file */
  88 #define PF_PATH "/etc/passwd"   /* Path name of the "passwd" file */
  89 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  90
  91 /*
  92  * compile-time symbolic constants,
  93  * Support does not mean the feature is enabled.
  94  * Use pathconf/sysconf to obtain actual configuration value.
  95  */
  96
  97 /* Values unchanged in UNIX 03 */
  98 #define _POSIX_ASYNC_IO                 1
  99 #define _POSIX_JOB_CONTROL              1
 100 #define _POSIX_SAVED_IDS                1
 101 #define _POSIX_SYNC_IO                  1
 102
 103 /*
 104  * POSIX.1b compile-time symbolic constants.
 105  */
 106 #if defined(_XPG6)
 107 #define _POSIX_ASYNCHRONOUS_IO          200112L
 108 #define _POSIX_FSYNC                    200112L
 109 #define _POSIX_MAPPED_FILES             200112L
 110 #define _POSIX_MEMLOCK                  200112L
 111 #define _POSIX_MEMLOCK_RANGE            200112L
 112 #define _POSIX_MEMORY_PROTECTION        200112L
 113 #define _POSIX_MESSAGE_PASSING          200112L
 114 #define _POSIX_PRIORITY_SCHEDULING      200112L
 115 #define _POSIX_REALTIME_SIGNALS         200112L
 116 #define _POSIX_SEMAPHORES               200112L
 117 #define _POSIX_SHARED_MEMORY_OBJECTS    200112L
 118 #define _POSIX_SYNCHRONIZED_IO          200112L
 119 #else
 120 #define _POSIX_ASYNCHRONOUS_IO          1
 121 #define _POSIX_FSYNC                    1
 122 #define _POSIX_MAPPED_FILES             1
 123 #define _POSIX_MEMLOCK                  1
 124 #define _POSIX_MEMLOCK_RANGE            1
 125 #define _POSIX_MEMORY_PROTECTION        1
 126 #define _POSIX_MESSAGE_PASSING          1
 127 #define _POSIX_PRIORITY_SCHEDULING      1
 128 #define _POSIX_REALTIME_SIGNALS         1
 129 #define _POSIX_SEMAPHORES               1
 130 #define _POSIX_SHARED_MEMORY_OBJECTS    1
 131 #define _POSIX_SYNCHRONIZED_IO          1
 132 #endif
 133
 134 /*
 135  * POSIX.1c compile-time symbolic constants.
 136  */
 137 #if defined(_XPG6)
 138 #define _POSIX_THREAD_SAFE_FUNCTIONS            200112L
 139 #define _POSIX_THREADS                          200112L
 140 #define _POSIX_THREAD_ATTR_STACKADDR            200112L
 141 #define _POSIX_THREAD_ATTR_STACKSIZE            200112L
 142 #define _POSIX_THREAD_PROCESS_SHARED            200112L
 143 #define _POSIX_THREAD_PRIORITY_SCHEDULING       200112L
 144 #define _POSIX_TIMERS                           200112L
 145 #else
 146 #define _POSIX_THREAD_SAFE_FUNCTIONS            1
 147 #define _POSIX_THREADS                          1
 148 #define _POSIX_THREAD_ATTR_STACKADDR            1
 149 #define _POSIX_THREAD_ATTR_STACKSIZE            1
 150 #define _POSIX_THREAD_PROCESS_SHARED            1
 151 #define _POSIX_THREAD_PRIORITY_SCHEDULING       1
 152 #define _POSIX_TIMERS                           1
 153 #endif
 154
 155 /* New in UNIX 03 */
 156 #define _POSIX_ADVISORY_INFO                    200112L
 157 #define _POSIX_BARRIERS                         200112L
 158 #define _POSIX_CLOCK_SELECTION                  200112L
 159 #define _POSIX_IPV6                             200112L
 160 #define _POSIX_MONOTONIC_CLOCK                  200112L
 161 #define _POSIX_RAW_SOCKETS                      200112L
 162 #define _POSIX_READER_WRITER_LOCKS              200112L
 163 #define _POSIX_SPAWN                            200112L
 164 #define _POSIX_SPIN_LOCKS                       200112L
 165 #define _POSIX_TIMEOUTS                         200112L
 166
 167 /*
 168  * Support for the POSIX.1 mutex protocol attribute. For realtime applications
 169  * which need mutexes to support priority inheritance/ceiling.
 170  */
 171 #if defined(_XPG6)
 172 #define _POSIX_THREAD_PRIO_INHERIT              200112L
 173 #define _POSIX_THREAD_PRIO_PROTECT              200112L
 174 #else
 175 #define _POSIX_THREAD_PRIO_INHERIT              1
 176 #define _POSIX_THREAD_PRIO_PROTECT              1
 177 #endif
 178
 179 #ifndef _POSIX_VDISABLE
 180 #define _POSIX_VDISABLE         0
 181 #endif
 182
 183 #define STDIN_FILENO    0
 184 #define STDOUT_FILENO   1
 185 #define STDERR_FILENO   2
 186
 187 /*
 188  * Large File Summit-related announcement macros.  The system supports both
 189  * the additional and transitional Large File Summit interfaces.  (The final
 190  * two macros provide a finer granularity breakdown of _LFS64_LARGEFILE.)
 191  */
 192 #define _LFS_LARGEFILE          1
 193 #define _LFS64_LARGEFILE        1
 194 #define _LFS64_STDIO            1
 195 #define _LFS64_ASYNCHRONOUS_IO  1
 196
 197 /* large file compilation environment setup */
 198 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
 199 #ifdef  __PRAGMA_REDEFINE_EXTNAME
 200 #pragma redefine_extname        ftruncate       ftruncate64
 201 #pragma redefine_extname        lseek           lseek64
 202 #pragma redefine_extname        pread           pread64
 203 #pragma redefine_extname        pwrite          pwrite64
 204 #pragma redefine_extname        truncate        truncate64
 205 #pragma redefine_extname        lockf           lockf64
 206 #pragma redefine_extname        tell            tell64
 207 #else   /* __PRAGMA_REDEFINE_EXTNAME */
 208 #define ftruncate                       ftruncate64
 209 #define lseek                           lseek64
 210 #define pread                           pread64
 211 #define pwrite                          pwrite64
 212 #define truncate                        truncate64
 213 #define lockf                           lockf64
 214 #define tell                            tell64
 215 #endif  /* __PRAGMA_REDEFINE_EXTNAME */
 216 #endif  /* !_LP64 && _FILE_OFFSET_BITS == 64 */
 217
 218 /* In the LP64 compilation environment, the APIs are already large file */
 219 #if defined(_LP64) && defined(_LARGEFILE64_SOURCE)
 220 #ifdef  __PRAGMA_REDEFINE_EXTNAME
 221 #pragma redefine_extname        ftruncate64     ftruncate
 222 #pragma redefine_extname        lseek64         lseek
 223 #pragma redefine_extname        pread64         pread
 224 #pragma redefine_extname        pwrite64        pwrite
 225 #pragma redefine_extname        truncate64      truncate
 226 #pragma redefine_extname        lockf64         lockf
 227 #pragma redefine_extname        tell64          tell
 228 #else   /* __PRAGMA_REDEFINE_EXTNAME */
 229 #define ftruncate64                     ftruncate
 230 #define lseek64                         lseek
 231 #define pread64                         pread
 232 #define pwrite64                        pwrite
 233 #define truncate64                      truncate
 234 #define lockf64                         lockf
 235 #define tell64                          tell
 236 #endif  /* __PRAGMA_REDEFINE_EXTNAME */
 237 #endif  /* _LP64 && _LARGEFILE64_SOURCE */
 238
 239 extern int access(const char *, int);
 240 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 241 extern int acct(const char *);
 242 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 243 extern unsigned alarm(unsigned);
 244 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
 245 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
 246         defined(__EXTENSIONS__)
 247 extern int brk(void *);
 248 #endif /* !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2)... */
 249 extern int chdir(const char *);
 250 extern int chown(const char *, uid_t, gid_t);
 251 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
 252 #if !defined(_POSIX_C_SOURCE) || (defined(_XOPEN_SOURCE) && \
 253         !defined(_XPG6)) || defined(__EXTENSIONS__)
 254 extern int chroot(const char *);
 255 #endif /* !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE))... */
 256 extern int close(int);
 257 #if defined(_XPG4) || defined(__EXTENSIONS__)
 258 extern size_t confstr(int, char *, size_t);
 259 extern char *crypt(const char *, const char *);
 260 #endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
 261 #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
 262         defined(__EXTENSIONS__)
 263 extern char *ctermid(char *);
 264 #endif /* (!defined(_POSIX_C_SOURCE) ... */
 265 extern char *ctermid_r(char *);
 266 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
 267 #if !defined(_XPG6) || defined(__EXTENSIONS__)
 268 extern char *cuserid(char *);
 269 #endif
 270 extern int dup(int);
 271 extern int dup2(int, int);
 272 extern int dup3(int, int, int);
 273 #if defined(_XPG4) || defined(__EXTENSIONS__)
 274 extern void encrypt(char *, int);
 275 #endif /* defined(XPG4) || defined(__EXTENSIONS__) */
 276 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 277 extern void endusershell(void);
 278 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 279 extern int execl(const char *, const char *, ...);
 280 extern int execle(const char *, const char *, ...);
 281 extern int execlp(const char *, const char *, ...);
 282 extern int execv(const char *, char *const *);
 283 extern int execve(const char *, char *const *, char *const *);
 284 extern int execvp(const char *, char *const *);
 285 #if defined(_GNU_SOURCE) || defined(__EXTENSIONS__)
 286 extern int execvpe(const char *, char *const *, char *const *);
 287 #endif
 288 extern void _exit(int)
 289         __NORETURN;
 290 /*
 291  * The following fattach prototype is duplicated in <stropts.h>. The
 292  * duplication is necessitated by XPG4.2 which requires the prototype
 293  * be defined in <stropts.h>.
 294  */
 295 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 296 extern int fattach(int, const char *);
 297 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 298 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
 299 extern int fchdir(int);
 300 extern int fchown(int, uid_t, gid_t);
 301 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
 302 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 303 extern int fchroot(int);
 304 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 305 #if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || \
 306         defined(__EXTENSIONS__)
 307 extern int fdatasync(int);
 308 #endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
 309 /*
 310  * The following fdetach prototype is duplicated in <stropts.h>. The
 311  * duplication is necessitated by XPG4.2 which requires the prototype
 312  * be defined in <stropts.h>.
 313  */
 314 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 315 extern int fdetach(const char *);
 316 #endif /* !defined(__XOPEN_OR_POSIX)... */
 317 extern pid_t fork(void);
 318 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 319 extern pid_t fork1(void);
 320 extern pid_t forkall(void);
 321 #endif /* !defined(__XOPEN_OR_POSIX)... */
 322 extern long fpathconf(int, int);
 323 #if !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2) || \
 324         defined(__EXTENSIONS__)
 325 extern int fsync(int);
 326 #endif /* !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2)... */
 327 #if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || defined(_XPG4_2) || \
 328         (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
 329         defined(__EXTENSIONS__)
 330 extern int ftruncate(int, off_t);
 331 #endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
 332 extern char *getcwd(char *, size_t);
 333 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
 334         defined(__EXTENSIONS__)
 335 extern int getdtablesize(void);
 336 #endif
 337 extern gid_t getegid(void);
 338 extern uid_t geteuid(void);
 339 extern gid_t getgid(void);
 340 extern int getgroups(int, gid_t *);
 341 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
 342 extern long gethostid(void);
 343 #endif
 344 extern int gethostname(char *, size_t);
 345
 346 #ifndef __GETLOGIN_DEFINED      /* Avoid duplicate in stdlib.h */
 347 extern char *getlogin(void);
 348 #endif  /* __GETLOGIN_DEFINED */
 349
 350 #if defined(_XPG4) || defined(__EXTENSIONS__)
 351 extern int  getopt(int, char *const *, const char *);
 352 extern char *optarg;
 353 extern int  opterr, optind, optopt;
 354 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
 355 #if !defined(_XPG6) || defined(__EXTENSIONS__)
 356 extern char *getpass(const char *);
 357 #endif
 358 #endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
 359 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
 360 /* Marked as LEGACY in SUSv2 and removed in SUSv3 */
 361 #if !defined(_XPG6) || defined(__EXTENSIONS__)
 362 extern int getpagesize(void);
 363 #endif
 364 extern pid_t getpgid(pid_t);
 365 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
 366 extern pid_t getpid(void);
 367 extern pid_t getppid(void);
 368 extern pid_t getpgrp(void);
 369
 370 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 371 char *gettxt(const char *, const char *);
 372 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 373 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
 374 extern pid_t getsid(pid_t);
 375 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
 376 extern uid_t getuid(void);
 377 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 378 extern char *getusershell(void);
 379 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 380 /*
 381  * The following ioctl prototype is duplicated in <stropts.h>. The
 382  * duplication is necessitated by XPG4.2 which requires the prototype
 383  * be defined in <stropts.h>.
 384  */
 385 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 386 extern int ioctl(int, int, ...);
 387 extern int isaexec(const char *, char *const *, char *const *);
 388 extern int issetugid(void);
 389 #endif
 390 extern int isatty(int);
 391 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
 392 extern int lchown(const char *, uid_t, gid_t);
 393 #endif
 394 extern int link(const char *, const char *);
 395 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 396 extern offset_t llseek(int, offset_t, int);
 397 #endif
 398 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
 399         (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
 400         defined(__EXTENSIONS__)
 401 extern int lockf(int, int, off_t);
 402 #endif
 403 extern off_t lseek(int, off_t, int);
 404 #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
 405         defined(__EXTENSIONS__)
 406 extern int nice(int);
 407 #endif /* !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)... */
 408 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 409 extern int mincore(caddr_t, size_t, char *);
 410 #endif
 411 extern long pathconf(const char *, int);
 412 extern int pause(void);
 413 extern int pipe(int *);
 414 extern int pipe2(int *, int);
 415 #if !defined(_POSIX_C_SOURCE) || defined(_XPG5) || \
 416         (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
 417         defined(__EXTENSIONS__)
 418 extern ssize_t pread(int, void *, size_t, off_t);
 419 #endif
 420 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 421 extern void profil(unsigned short *, size_t, unsigned long, unsigned int);
 422 #endif
 423 /*
 424  * pthread_atfork() is also declared in <pthread.h> as per SUSv3. The
 425  * declarations are identical. A change to either one may also require
 426  * appropriate namespace updates in order to avoid redeclaration
 427  * warnings in the case where both prototypes are exposed via inclusion
 428  * of both <pthread.h> and <unistd.h>.
 429  */
 430 #if !defined(__XOPEN_OR_POSIX) || \
 431         ((_POSIX_C_SOURCE > 2) && !defined(_XPG6)) || \
 432         defined(__EXTENSIONS__)
 433 extern int pthread_atfork(void (*) (void), void (*) (void), void (*) (void));
 434 #endif /* !defined(__XOPEN_OR_POSIX) || ((_POSIX_C_SOURCE > 2) ... */
 435 #if !defined(_LP64) && \
 436         (!defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__))
 437 extern int ptrace(int, pid_t, int, int);
 438 #endif
 439 #if !defined(_POSIX_C_SOURCE) || defined(_XPG5) || \
 440         (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
 441         defined(__EXTENSIONS__)
 442 extern ssize_t pwrite(int, const void *, size_t, off_t);
 443 #endif
 444 extern ssize_t read(int, void *, size_t);
 445 #if !defined(__XOPEN_OR_POSIX) || \
 446         defined(_XPG4_2) || defined(__EXTENSIONS__)
 447 extern ssize_t readlink(const char *_RESTRICT_KYWD, char *_RESTRICT_KYWD,
 448         size_t);
 449 #endif
 450 #if (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3) && !defined(_XPG4))) || \
 451         defined(__EXTENSIONS__)
 452 #if __cplusplus >= 199711L
 453 namespace std {
 454 #endif
 455 extern int rename(const char *, const char *);
 456 #if __cplusplus >= 199711L
 457 } /* end of namespace std */
 458
 459 using std::rename;
 460 #endif /* __cplusplus >= 199711L */
 461 #endif /* (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3)... */
 462 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 463 extern int resolvepath(const char *, char *, size_t);
 464 #endif /* !defined(__XOPEN_OR_POSIX)|| defined(__EXTENSIONS__) */
 465 extern int rmdir(const char *);
 466
 467 #if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
 468         defined(__EXTENSIONS__)
 469 extern void *sbrk(intptr_t);
 470 #endif /* !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2)... */
 471 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__)
 472 extern int setegid(gid_t);
 473 extern int seteuid(uid_t);
 474 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */
 475 extern int setgid(gid_t);
 476 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 477 extern int setgroups(int, const gid_t *);
 478 extern int sethostname(char *, int);
 479 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 480 extern int setpgid(pid_t, pid_t);
 481 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
 482 extern pid_t setpgrp(void);
 483 extern int setregid(gid_t, gid_t);
 484 extern int setreuid(uid_t, uid_t);
 485 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
 486 extern pid_t setsid(void);
 487 extern int setuid(uid_t);
 488 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 489 extern void setusershell(void);
 490 #endif /* !defined(__XOPEN_OR_POSIX)|| defined(__EXTENSIONS__) */
 491 extern unsigned sleep(unsigned);
 492 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 493 extern int stime(const time_t *);
 494 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 495 #if defined(_XPG4)
 496 /* __EXTENSIONS__ makes the SVID Third Edition prototype in stdlib.h visible */
 497 extern void swab(const void *_RESTRICT_KYWD, void *_RESTRICT_KYWD, ssize_t);
 498 #endif /* defined(_XPG4) */
 499 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
 500 extern int symlink(const char *, const char *);
 501 extern void sync(void);
 502 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) */
 503 #if defined(_XPG5) && !defined(_XPG6)
 504 #ifdef __PRAGMA_REDEFINE_EXTNAME
 505 #pragma redefine_extname sysconf __sysconf_xpg5
 506 #else /* __PRAGMA_REDEFINE_EXTNAME */
 507 #define sysconf __sysconf_xpg5
 508 #endif  /* __PRAGMA_REDEFINE_EXTNAME */
 509 #endif /* defined(_XPG5) && !defined(_XPG6) */
 510 extern long sysconf(int);
 511 extern pid_t tcgetpgrp(int);
 512 extern int tcsetpgrp(int, pid_t);
 513 #if !defined(__XOPEN_OR_POSIX) || \
 514         (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
 515         defined(__EXTENSIONS__)
 516 extern off_t tell(int);
 517 #endif /* !defined(__XOPEN_OR_POSIX)... */
 518 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
 519         (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
 520         defined(__EXTENSIONS__)
 521 extern int truncate(const char *, off_t);
 522 #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
 523 extern char *ttyname(int);
 524 #if (defined(_XPG4_2) && !defined(_XPG7)) || !defined(_STRICT_SYMBOLS)
 525 extern useconds_t ualarm(useconds_t, useconds_t);
 526 #endif
 527 extern int unlink(const char *);
 528 #if (defined(_XPG4_2) && !defined(_XPG7)) || !defined(_STRICT_SYMBOLS)
 529 extern char *getwd(char *);
 530 extern int usleep(useconds_t);
 531 extern pid_t vfork(void) __RETURNS_TWICE;
 532 #pragma unknown_control_flow(vfork)
 533 #endif
 534 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 535 extern void vhangup(void);
 536 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 537 extern ssize_t write(int, const void *, size_t);
 538 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 539 extern void yield(void);
 540 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 541
 542 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
 543         defined(__EXTENSIONS__)
 544         /* || defined(_XPG7) */
 545 extern int faccessat(int, const char *, int, int);
 546 extern int fchownat(int, const char *, uid_t, gid_t, int);
 547 extern int linkat(int, const char *, int, const char *, int);
 548 extern ssize_t readlinkat(int, const char *_RESTRICT_KYWD,
 549         char *_RESTRICT_KYWD, size_t);
 550 extern int renameat(int, const char *, int, const char *);
 551 extern int symlinkat(const char *, int, const char *);
 552 extern int unlinkat(int, const char *, int);
 553 #endif  /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
 554 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
 555 extern int get_nprocs(void);
 556 extern int get_nprocs_conf(void);
 557 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
 558
 559 /* transitional large file interface versions */
 560 #if     defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
 561             !defined(__PRAGMA_REDEFINE_EXTNAME))
 562 extern int ftruncate64(int, off64_t);
 563 extern off64_t lseek64(int, off64_t, int);
 564 extern ssize_t  pread64(int, void *, size_t, off64_t);
 565 extern ssize_t  pwrite64(int, const void *, size_t, off64_t);
 566 extern off64_t  tell64(int);
 567 extern int      truncate64(const char *, off64_t);
 568 extern int      lockf64(int, int, off64_t);
 569 #endif  /* _LARGEFILE64_SOURCE */
 570
 571 extern int getlogin_r(char *, size_t);
 572 extern int ttyname_r(int, char *, size_t);
 573
 574 #if !defined(_STRICT_SYMBOLS)
 575 extern int getentropy(void *, size_t);
 576 #endif  /* !_STRICT_SYMBOLS */
 577
 578 #if __UNLEASHED_VISIBLE
 579 extern mode_t getmode(const void *, mode_t);
 580 extern void *setmode(const char *);
 581 #endif
 582
 583 #ifdef  __cplusplus
 584 }
 585 #endif
 586
 587 #endif /* _UNISTD_H */