1/* $NetBSD: unistd.h,v 1.164 2024/01/19 18:40:35 christos Exp $ */ 2 3/*- 4 * Copyright (c) 1998, 1999, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Klaus Klein. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/* 33 * Copyright (c) 1991, 1993, 1994 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)unistd.h 8.12 (Berkeley) 4/27/95 61 */ 62 63#ifndef _UNISTD_H_ 64#define _UNISTD_H_ 65 66#include <machine/ansi.h> 67#include <machine/int_types.h> 68#include <sys/cdefs.h> 69#include <sys/featuretest.h> 70#include <sys/types.h> 71#include <sys/unistd.h> 72 73#if _FORTIFY_SOURCE > 0 74#include <ssp/unistd.h> 75#endif 76 77/* 78 * IEEE Std 1003.1-90 79 */ 80#define STDIN_FILENO 0 /* standard input file descriptor */ 81#define STDOUT_FILENO 1 /* standard output file descriptor */ 82#define STDERR_FILENO 2 /* standard error file descriptor */ 83 84#include <sys/null.h> 85 86__BEGIN_DECLS 87__dead void _exit(int); 88int access(const char *, int); 89unsigned int alarm(unsigned int); 90int chdir(const char *); 91#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) 92int chown(const char *, uid_t, gid_t) __RENAME(__posix_chown); 93#else 94int chown(const char *, uid_t, gid_t); 95#endif /* defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) */ 96int close(int); 97size_t confstr(int, char *, size_t); 98#ifndef __CUSERID_DECLARED 99#define __CUSERID_DECLARED 100/* also declared in stdio.h */ 101char *cuserid(char *); /* obsolete */ 102#endif /* __CUSERID_DECLARED */ 103int dup(int); 104int dup2(int, int); 105int execl(const char *, const char *, ...) __null_sentinel; 106int execle(const char *, const char *, ...); 107int execlp(const char *, const char *, ...) __null_sentinel; 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 setegid(gid_t); 177int 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 186off_t lseek(int, off_t, int); 187int 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) 195int 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) 205int fdatasync(int); 206int 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) 215int ttyname_r(int, char *, size_t); 216#ifndef __PTHREAD_ATFORK_DECLARED 217#define __PTHREAD_ATFORK_DECLARED 218int 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) 226int chroot(const char *); 227int 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 *); 236int encrypt(char *, int); 237char *getpass(const char *); 238#endif 239#if defined(_XOPEN_SOURCE) || (_POSIX_C_SOURCE - 0) >= 200809L || \ 240 defined(_NETBSD_SOURCE) 241pid_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_ 251typedef __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 260int brk(void *); 261int fchdir(int); 262#if defined(_XOPEN_SOURCE) 263int fchown(int, uid_t, gid_t) __RENAME(__posix_fchown); 264#else 265int fchown(int, uid_t, gid_t); 266#endif 267int getdtablesize(void); 268long gethostid(void); 269int gethostname(char *, size_t); 270__pure int 271 getpagesize(void); /* legacy */ 272pid_t getpgid(pid_t); 273#if defined(_XOPEN_SOURCE) 274int lchown(const char *, uid_t, gid_t) __RENAME(__posix_lchown); 275#else 276int lchown(const char *, uid_t, gid_t); 277#endif 278int lockf(int, int, off_t); 279void *sbrk(intptr_t); 280/* XXX prototype wrong! */ 281int setpgrp(pid_t, pid_t); /* obsoleted by setpgid() */ 282int setregid(gid_t, gid_t); 283int setreuid(uid_t, uid_t); 284void swab(const void * __restrict, void * __restrict, ssize_t); 285int symlink(const char *, const char *); 286void sync(void); 287useconds_t ualarm(useconds_t, useconds_t); 288int usleep(useconds_t); 289#ifndef __LIBC12_SOURCE__ 290pid_t vfork(void) __RENAME(__vfork14) __returns_twice; 291#endif 292 293#ifndef __AUDIT__ 294char *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) 304ssize_t pread(int, void *, size_t, off_t); 305ssize_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) 313int linkat(int, const char *, int, const char *, int); 314int renameat(int, const char *, int, const char *); 315int faccessat(int, const char *, int, int); 316int fchownat(int, const char *, uid_t, gid_t, int); 317ssize_t readlinkat(int, const char *, char *, size_t); 318int symlinkat(const char *, int, const char *); 319int unlinkat(int, const char *, int); 320int fexecve(int, char * const *, char * const *); 321#endif 322 323 324/* 325 * Implementation-defined extensions 326 */ 327#if defined(_NETBSD_SOURCE) 328int acct(const char *); 329int closefrom(int); 330int des_cipher(const char *, char *, long, int); 331int des_setkey(const char *); 332int dup3(int, int, int); 333void endusershell(void); 334int exect(const char *, char * const *, char * const *); 335int execvpe(const char *, char * const *, char * const *); 336int execlpe(const char *, const char *, ...); 337int fchroot(int); 338int fdiscard(int, off_t, off_t); 339int fsync_range(int, int, off_t, off_t); 340int getdomainname(char *, size_t); 341int getentropy(void *, size_t); 342int getgrouplist(const char *, gid_t, gid_t *, int *); 343int getgroupmembership(const char *, gid_t, gid_t *, int, int *); 344mode_t getmode(const void *, mode_t); 345char *getpassfd(const char *, char *, size_t, int *, int, int); 346#define GETPASS_NEED_TTY 0x001 /* Fail if we cannot set tty */ 347#define GETPASS_FAIL_EOF 0x002 /* Fail on EOF */ 348#define GETPASS_BUF_LIMIT 0x004 /* beep on buffer limit */ 349#define GETPASS_NO_SIGNAL 0x008 /* don't make ttychars send signals */ 350#define GETPASS_NO_BEEP 0x010 /* don't beep */ 351#define GETPASS_ECHO 0x020 /* echo characters as they are typed */ 352#define GETPASS_ECHO_STAR 0x040 /* echo '*' for each character */ 353#define GETPASS_7BIT 0x080 /* mask the high bit each char */ 354#define GETPASS_FORCE_LOWER 0x100 /* lowercase each char */ 355#define GETPASS_FORCE_UPPER 0x200 /* uppercase each char */ 356#define GETPASS_ECHO_NL 0x400 /* echo a newline if successful */ 357 358char *getpass_r(const char *, char *, size_t); 359int getpeereid(int, uid_t *, gid_t *); 360__aconst char *getusershell(void); 361int initgroups(const char *, gid_t); 362int iruserok(uint32_t, int, const char *, const char *); 363int issetugid(void); 364long lpathconf(const char *, int); 365int mkstemps(char *, int); 366int nfssvc(int, void *); 367int pipe2(int *, int); 368int profil(char *, size_t, unsigned long, unsigned int); 369#ifndef __PSIGNAL_DECLARED 370#define __PSIGNAL_DECLARED 371/* also in signal.h */ 372void psignal(int, const char *); 373#endif /* __PSIGNAL_DECLARED */ 374int rcmd(char **, int, const char *, const char *, const char *, int *); 375int reboot(int, char *); 376int revoke(const char *); 377int rresvport(int *); 378int ruserok(const char *, int, const char *, const char *); 379int setdomainname(const char *, size_t); 380int setgroups(int, const gid_t *); 381int sethostid(long); 382int sethostname(const char *, size_t); 383int setlogin(const char *); 384void *setmode(const char *); 385int setrgid(gid_t); 386int setruid(uid_t); 387void setusershell(void); 388void strmode(mode_t, char *); 389#ifndef __STRSIGNAL_DECLARED 390#define __STRSIGNAL_DECLARED 391/* backwards-compatibility; also in string.h */ 392__aconst char *strsignal(int); 393#endif /* __STRSIGNAL_DECLARED */ 394int swapctl(int, void *, int); 395int swapon(const char *); /* obsoleted by swapctl() */ 396int syscall(int, ...); 397quad_t __syscall(quad_t, ...); 398int undelete(const char *); 399 400#if 1 /*INET6*/ 401int rcmd_af(char **, int, const char *, 402 const char *, const char *, int *, int); 403int rresvport_af(int *, int); 404int rresvport_af_addr(int *, int, void *); 405int iruserok_sa(const void *, int, int, const char *, const char *); 406#endif 407 408#ifndef __SYS_SIGLIST_DECLARED 409#define __SYS_SIGLIST_DECLARED 410/* also in signal.h */ 411extern const char *const *sys_siglist __RENAME(__sys_siglist14); 412#endif /* __SYS_SIGLIST_DECLARED */ 413extern int optreset; /* getopt(3) external variable */ 414extern char *suboptarg; /* getsubopt(3) external variable */ 415#endif 416 417#ifdef _LIBC_INTERNAL 418pid_t __fork(void); 419pid_t __locked_fork(int *) __weak; 420#endif 421 422__END_DECLS 423#endif /* !_UNISTD_H_ */ 424