1 /* $NetBSD: unistd.h,v 1.162 2021/10/15 22:32:28 andvar 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); 88 int access(const char *, int); 89 unsigned int alarm(unsigned int); 90 int chdir(const char *); 91 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) 92 int chown(const char *, uid_t, gid_t) __RENAME(__posix_chown); 93 #else 94 int chown(const char *, uid_t, gid_t); 95 #endif /* defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) */ 96 int close(int); 97 size_t confstr(int, char *, size_t); 98 #ifndef __CUSERID_DECLARED 99 #define __CUSERID_DECLARED 100 /* also declared in stdio.h */ 101 char *cuserid(char *); /* obsolete */ 102 #endif /* __CUSERID_DECLARED */ 103 int dup(int); 104 int dup2(int, int); 105 int execl(const char *, const char *, ...) __null_sentinel; 106 int execle(const char *, const char *, ...); 107 int execlp(const char *, const char *, ...) __null_sentinel; 108 int execv(const char *, char * const *); 109 int execve(const char *, char * const *, char * const *); 110 int execvp(const char *, char * const *); 111 pid_t fork(void); 112 long fpathconf(int, int); 113 #if __SSP_FORTIFY_LEVEL == 0 114 char *getcwd(char *, size_t); 115 #endif 116 gid_t getegid(void); 117 uid_t geteuid(void); 118 gid_t getgid(void); 119 int getgroups(int, gid_t []); 120 __aconst char *getlogin(void); 121 int getlogin_r(char *, size_t); 122 pid_t getpgrp(void); 123 pid_t getpid(void); 124 pid_t getppid(void); 125 uid_t getuid(void); 126 int isatty(int); 127 int link(const char *, const char *); 128 long pathconf(const char *, int); 129 int pause(void); 130 int pipe(int *); 131 #if __SSP_FORTIFY_LEVEL == 0 132 ssize_t read(int, void *, size_t); 133 #endif 134 int rmdir(const char *); 135 int setgid(gid_t); 136 int setpgid(pid_t, pid_t); 137 pid_t setsid(void); 138 int setuid(uid_t); 139 unsigned int sleep(unsigned int); 140 long sysconf(int); 141 pid_t tcgetpgrp(int); 142 int tcsetpgrp(int, pid_t); 143 __aconst char *ttyname(int); 144 int unlink(const char *); 145 ssize_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) 153 int getopt(int, char * const [], const char *); 154 155 extern char *optarg; /* getopt(3) external variables */ 156 extern int opterr; 157 extern int optind; 158 extern 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 == 0 167 ssize_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) 176 int setegid(gid_t); 177 int seteuid(uid_t); 178 #endif 179 180 /* 181 * The following three syscalls are also defined in <sys/types.h> 182 * We protect them against double declarations. 183 */ 184 #ifndef __OFF_T_SYSCALLS_DECLARED 185 #define __OFF_T_SYSCALLS_DECLARED 186 off_t lseek(int, off_t, int); 187 int truncate(const char *, off_t); 188 /* 189 * IEEE Std 1003.1b-93, 190 * also found in X/Open Portability Guide >= Issue 4 Version 2 191 */ 192 #if (_POSIX_C_SOURCE - 0) >= 199309L || \ 193 (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \ 194 (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE) 195 int ftruncate(int, off_t); 196 #endif 197 #endif /* __OFF_T_SYSCALLS_DECLARED */ 198 199 200 /* 201 * IEEE Std 1003.1b-93, adopted in X/Open CAE Specification Issue 5 Version 2 202 */ 203 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \ 204 defined(_NETBSD_SOURCE) 205 int fdatasync(int); 206 int fsync(int); 207 #endif 208 209 210 /* 211 * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2 212 */ 213 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ 214 defined(_REENTRANT) || defined(_NETBSD_SOURCE) 215 int ttyname_r(int, char *, size_t); 216 #ifndef __PTHREAD_ATFORK_DECLARED 217 #define __PTHREAD_ATFORK_DECLARED 218 int pthread_atfork(void (*)(void), void (*)(void), void (*)(void)); 219 #endif 220 #endif 221 222 /* 223 * X/Open Portability Guide, all issues 224 */ 225 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 226 int chroot(const char *); 227 int nice(int); 228 #endif 229 230 231 /* 232 * X/Open Portability Guide >= Issue 4 233 */ 234 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 235 __aconst char *crypt(const char *, const char *); 236 int encrypt(char *, int); 237 char *getpass(const char *); 238 #endif 239 #if defined(_XOPEN_SOURCE) || (_POSIX_C_SOURCE - 0) >= 200809L || \ 240 defined(_NETBSD_SOURCE) 241 pid_t getsid(pid_t); 242 #endif 243 244 245 /* 246 * X/Open Portability Guide >= Issue 4 Version 2 247 */ 248 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \ 249 (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE) 250 #ifndef _BSD_INTPTR_T_ 251 typedef __intptr_t intptr_t; 252 #define _BSD_INTPTR_T_ 253 #endif 254 255 #define F_ULOCK 0 256 #define F_LOCK 1 257 #define F_TLOCK 2 258 #define F_TEST 3 259 260 int brk(void *); 261 int fchdir(int); 262 #if defined(_XOPEN_SOURCE) 263 int fchown(int, uid_t, gid_t) __RENAME(__posix_fchown); 264 #else 265 int fchown(int, uid_t, gid_t); 266 #endif 267 int getdtablesize(void); 268 long gethostid(void); 269 int gethostname(char *, size_t); 270 __pure int 271 getpagesize(void); /* legacy */ 272 pid_t getpgid(pid_t); 273 #if defined(_XOPEN_SOURCE) 274 int lchown(const char *, uid_t, gid_t) __RENAME(__posix_lchown); 275 #else 276 int lchown(const char *, uid_t, gid_t); 277 #endif 278 int lockf(int, int, off_t); 279 void *sbrk(intptr_t); 280 /* XXX prototype wrong! */ 281 int setpgrp(pid_t, pid_t); /* obsoleted by setpgid() */ 282 int setregid(gid_t, gid_t); 283 int setreuid(uid_t, uid_t); 284 void swab(const void * __restrict, void * __restrict, ssize_t); 285 int symlink(const char *, const char *); 286 void sync(void); 287 useconds_t ualarm(useconds_t, useconds_t); 288 int usleep(useconds_t); 289 #ifndef __LIBC12_SOURCE__ 290 pid_t vfork(void) __RENAME(__vfork14) __returns_twice; 291 #endif 292 293 #ifndef __AUDIT__ 294 char *getwd(char *); /* obsoleted by getcwd() */ 295 #endif 296 #endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */ 297 298 299 /* 300 * X/Open CAE Specification Issue 5 Version 2 301 */ 302 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 500 || \ 303 defined(_NETBSD_SOURCE) 304 ssize_t pread(int, void *, size_t, off_t); 305 ssize_t pwrite(int, const void *, size_t, off_t); 306 #endif /* (_POSIX_C_SOURCE - 0) >= 200112L || ... */ 307 308 /* 309 * X/Open Extended API set 2 (a.k.a. C063) 310 */ 311 #if (_POSIX_C_SOURCE - 0) >= 200809L || (_XOPEN_SOURCE - 0 >= 700) || \ 312 defined(_NETBSD_SOURCE) 313 int linkat(int, const char *, int, const char *, int); 314 int renameat(int, const char *, int, const char *); 315 int faccessat(int, const char *, int, int); 316 int fchownat(int, const char *, uid_t, gid_t, int); 317 ssize_t readlinkat(int, const char *, char *, size_t); 318 int symlinkat(const char *, int, const char *); 319 int unlinkat(int, const char *, int); 320 int fexecve(int, char * const *, char * const *); 321 #endif 322 323 324 /* 325 * Implementation-defined extensions 326 */ 327 #if defined(_NETBSD_SOURCE) 328 int acct(const char *); 329 int closefrom(int); 330 int des_cipher(const char *, char *, long, int); 331 int des_setkey(const char *); 332 int dup3(int, int, int); 333 void endusershell(void); 334 int exect(const char *, char * const *, char * const *); 335 int execvpe(const char *, char * const *, char * const *); 336 int execlpe(const char *, const char *, ...); 337 int fchroot(int); 338 int fdiscard(int, off_t, off_t); 339 int fsync_range(int, int, off_t, off_t); 340 int getdomainname(char *, size_t); 341 int getgrouplist(const char *, gid_t, gid_t *, int *); 342 int getgroupmembership(const char *, gid_t, gid_t *, int, int *); 343 mode_t getmode(const void *, mode_t); 344 char *getpassfd(const char *, char *, size_t, int *, int, int); 345 #define GETPASS_NEED_TTY 0x001 /* Fail if we cannot set tty */ 346 #define GETPASS_FAIL_EOF 0x002 /* Fail on EOF */ 347 #define GETPASS_BUF_LIMIT 0x004 /* beep on buffer limit */ 348 #define GETPASS_NO_SIGNAL 0x008 /* don't make ttychars send signals */ 349 #define GETPASS_NO_BEEP 0x010 /* don't beep */ 350 #define GETPASS_ECHO 0x020 /* echo characters as they are typed */ 351 #define GETPASS_ECHO_STAR 0x040 /* echo '*' for each character */ 352 #define GETPASS_7BIT 0x080 /* mask the high bit each char */ 353 #define GETPASS_FORCE_LOWER 0x100 /* lowercase each char */ 354 #define GETPASS_FORCE_UPPER 0x200 /* uppercase each char */ 355 #define GETPASS_ECHO_NL 0x400 /* echo a newline if successful */ 356 357 char *getpass_r(const char *, char *, size_t); 358 int getpeereid(int, uid_t *, gid_t *); 359 __aconst char *getusershell(void); 360 int initgroups(const char *, gid_t); 361 int iruserok(uint32_t, int, const char *, const char *); 362 int issetugid(void); 363 long lpathconf(const char *, int); 364 int mkstemps(char *, int); 365 int nfssvc(int, void *); 366 int pipe2(int *, int); 367 int profil(char *, size_t, unsigned long, unsigned int); 368 #ifndef __PSIGNAL_DECLARED 369 #define __PSIGNAL_DECLARED 370 /* also in signal.h */ 371 void psignal(int, const char *); 372 #endif /* __PSIGNAL_DECLARED */ 373 int rcmd(char **, int, const char *, const char *, const char *, int *); 374 int reboot(int, char *); 375 int revoke(const char *); 376 int rresvport(int *); 377 int ruserok(const char *, int, const char *, const char *); 378 int setdomainname(const char *, size_t); 379 int setgroups(int, const gid_t *); 380 int sethostid(long); 381 int sethostname(const char *, size_t); 382 int setlogin(const char *); 383 void *setmode(const char *); 384 int setrgid(gid_t); 385 int setruid(uid_t); 386 void setusershell(void); 387 void strmode(mode_t, char *); 388 #ifndef __STRSIGNAL_DECLARED 389 #define __STRSIGNAL_DECLARED 390 /* backwards-compatibility; also in string.h */ 391 __aconst char *strsignal(int); 392 #endif /* __STRSIGNAL_DECLARED */ 393 int swapctl(int, void *, int); 394 int swapon(const char *); /* obsoleted by swapctl() */ 395 int syscall(int, ...); 396 quad_t __syscall(quad_t, ...); 397 int undelete(const char *); 398 399 #if 1 /*INET6*/ 400 int rcmd_af(char **, int, const char *, 401 const char *, const char *, int *, int); 402 int rresvport_af(int *, int); 403 int rresvport_af_addr(int *, int, void *); 404 int iruserok_sa(const void *, int, int, const char *, const char *); 405 #endif 406 407 #ifndef __SYS_SIGLIST_DECLARED 408 #define __SYS_SIGLIST_DECLARED 409 /* also in signal.h */ 410 extern const char *const *sys_siglist __RENAME(__sys_siglist14); 411 #endif /* __SYS_SIGLIST_DECLARED */ 412 extern int optreset; /* getopt(3) external variable */ 413 extern char *suboptarg; /* getsubopt(3) external variable */ 414 #endif 415 416 __END_DECLS 417 #endif /* !_UNISTD_H_ */ 418