1/*- 2 * Copyright (c) 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)unistd.h 8.12 (Berkeley) 4/27/95 30 * $FreeBSD: stable/11/include/unistd.h 357180 2020-01-27 22:13:42Z kevans $ 31 */ 32 33#ifndef _UNISTD_H_ 34#define _UNISTD_H_ 35 36#include <sys/cdefs.h> 37#include <sys/types.h> /* XXX adds too much pollution. */ 38#include <sys/unistd.h> 39#include <sys/_null.h> 40#include <sys/_types.h> 41 42#ifndef _GID_T_DECLARED 43typedef __gid_t gid_t; 44#define _GID_T_DECLARED 45#endif 46 47#ifndef _OFF_T_DECLARED 48typedef __off_t off_t; 49#define _OFF_T_DECLARED 50#endif 51 52#ifndef _PID_T_DECLARED 53typedef __pid_t pid_t; 54#define _PID_T_DECLARED 55#endif 56 57#ifndef _SIZE_T_DECLARED 58typedef __size_t size_t; 59#define _SIZE_T_DECLARED 60#endif 61 62#ifndef _SSIZE_T_DECLARED 63typedef __ssize_t ssize_t; 64#define _SSIZE_T_DECLARED 65#endif 66 67#ifndef _UID_T_DECLARED 68typedef __uid_t uid_t; 69#define _UID_T_DECLARED 70#endif 71 72#ifndef _USECONDS_T_DECLARED 73typedef __useconds_t useconds_t; 74#define _USECONDS_T_DECLARED 75#endif 76 77#define STDIN_FILENO 0 /* standard input file descriptor */ 78#define STDOUT_FILENO 1 /* standard output file descriptor */ 79#define STDERR_FILENO 2 /* standard error file descriptor */ 80 81#if __XSI_VISIBLE || __POSIX_VISIBLE >= 200112 82#define F_ULOCK 0 /* unlock locked section */ 83#define F_LOCK 1 /* lock a section for exclusive use */ 84#define F_TLOCK 2 /* test and lock a section for exclusive use */ 85#define F_TEST 3 /* test a section for locks by other procs */ 86#endif 87 88/* 89 * POSIX options and option groups we unconditionally do or don't 90 * implement. This list includes those options which are exclusively 91 * implemented (or not) in user mode. Please keep this list in 92 * alphabetical order. 93 * 94 * Anything which is defined as zero below **must** have an 95 * implementation for the corresponding sysconf() which is able to 96 * determine conclusively whether or not the feature is supported. 97 * Anything which is defined as other than -1 below **must** have 98 * complete headers, types, and function declarations as specified by 99 * the POSIX standard; however, if the relevant sysconf() function 100 * returns -1, the functions may be stubbed out. 101 */ 102#define _POSIX_BARRIERS 200112L 103#define _POSIX_CPUTIME 200112L 104#define _POSIX_READER_WRITER_LOCKS 200112L 105#define _POSIX_REGEXP 1 106#define _POSIX_SHELL 1 107#define _POSIX_SPAWN 200112L 108#define _POSIX_SPIN_LOCKS 200112L 109#define _POSIX_THREAD_ATTR_STACKADDR 200112L 110#define _POSIX_THREAD_ATTR_STACKSIZE 200112L 111#define _POSIX_THREAD_CPUTIME 200112L 112#define _POSIX_THREAD_PRIO_INHERIT 200112L 113#define _POSIX_THREAD_PRIO_PROTECT 200112L 114#define _POSIX_THREAD_PRIORITY_SCHEDULING 200112L 115#define _POSIX_THREAD_PROCESS_SHARED 200112L 116#define _POSIX_THREAD_SAFE_FUNCTIONS -1 117#define _POSIX_THREAD_SPORADIC_SERVER -1 118#define _POSIX_THREADS 200112L 119#define _POSIX_TRACE -1 120#define _POSIX_TRACE_EVENT_FILTER -1 121#define _POSIX_TRACE_INHERIT -1 122#define _POSIX_TRACE_LOG -1 123#define _POSIX2_C_BIND 200112L /* mandatory */ 124#define _POSIX2_C_DEV -1 /* need c99 utility */ 125#define _POSIX2_CHAR_TERM 1 126#define _POSIX2_FORT_DEV -1 /* need fort77 utility */ 127#define _POSIX2_FORT_RUN 200112L 128#define _POSIX2_LOCALEDEF -1 129#define _POSIX2_PBS -1 130#define _POSIX2_PBS_ACCOUNTING -1 131#define _POSIX2_PBS_CHECKPOINT -1 132#define _POSIX2_PBS_LOCATE -1 133#define _POSIX2_PBS_MESSAGE -1 134#define _POSIX2_PBS_TRACK -1 135#define _POSIX2_SW_DEV -1 /* XXX ??? */ 136#define _POSIX2_UPE 200112L 137#define _V6_ILP32_OFF32 -1 138#define _V6_ILP32_OFFBIG 0 139#define _V6_LP64_OFF64 0 140#define _V6_LPBIG_OFFBIG -1 141 142#if __XSI_VISIBLE 143#define _XOPEN_CRYPT -1 /* XXX ??? */ 144#define _XOPEN_ENH_I18N -1 /* mandatory in XSI */ 145#define _XOPEN_LEGACY -1 146#define _XOPEN_REALTIME -1 147#define _XOPEN_REALTIME_THREADS -1 148#define _XOPEN_UNIX -1 149#endif 150 151/* Define the POSIX.2 version we target for compliance. */ 152#define _POSIX2_VERSION 199212L 153 154/* 155 * POSIX-style system configuration variable accessors (for the 156 * sysconf function). The kernel does not directly implement the 157 * sysconf() interface; rather, a C library stub translates references 158 * to sysconf() into calls to sysctl() using a giant switch statement. 159 * Those that are marked `user' are implemented entirely in the C 160 * library and never query the kernel. pathconf() is implemented 161 * directly by the kernel so those are not defined here. 162 */ 163#define _SC_ARG_MAX 1 164#define _SC_CHILD_MAX 2 165#define _SC_CLK_TCK 3 166#define _SC_NGROUPS_MAX 4 167#define _SC_OPEN_MAX 5 168#define _SC_JOB_CONTROL 6 169#define _SC_SAVED_IDS 7 170#define _SC_VERSION 8 171#define _SC_BC_BASE_MAX 9 /* user */ 172#define _SC_BC_DIM_MAX 10 /* user */ 173#define _SC_BC_SCALE_MAX 11 /* user */ 174#define _SC_BC_STRING_MAX 12 /* user */ 175#define _SC_COLL_WEIGHTS_MAX 13 /* user */ 176#define _SC_EXPR_NEST_MAX 14 /* user */ 177#define _SC_LINE_MAX 15 /* user */ 178#define _SC_RE_DUP_MAX 16 /* user */ 179#define _SC_2_VERSION 17 /* user */ 180#define _SC_2_C_BIND 18 /* user */ 181#define _SC_2_C_DEV 19 /* user */ 182#define _SC_2_CHAR_TERM 20 /* user */ 183#define _SC_2_FORT_DEV 21 /* user */ 184#define _SC_2_FORT_RUN 22 /* user */ 185#define _SC_2_LOCALEDEF 23 /* user */ 186#define _SC_2_SW_DEV 24 /* user */ 187#define _SC_2_UPE 25 /* user */ 188#define _SC_STREAM_MAX 26 /* user */ 189#define _SC_TZNAME_MAX 27 /* user */ 190 191#if __POSIX_VISIBLE >= 199309 192#define _SC_ASYNCHRONOUS_IO 28 193#define _SC_MAPPED_FILES 29 194#define _SC_MEMLOCK 30 195#define _SC_MEMLOCK_RANGE 31 196#define _SC_MEMORY_PROTECTION 32 197#define _SC_MESSAGE_PASSING 33 198#define _SC_PRIORITIZED_IO 34 199#define _SC_PRIORITY_SCHEDULING 35 200#define _SC_REALTIME_SIGNALS 36 201#define _SC_SEMAPHORES 37 202#define _SC_FSYNC 38 203#define _SC_SHARED_MEMORY_OBJECTS 39 204#define _SC_SYNCHRONIZED_IO 40 205#define _SC_TIMERS 41 206#define _SC_AIO_LISTIO_MAX 42 207#define _SC_AIO_MAX 43 208#define _SC_AIO_PRIO_DELTA_MAX 44 209#define _SC_DELAYTIMER_MAX 45 210#define _SC_MQ_OPEN_MAX 46 211#define _SC_PAGESIZE 47 212#define _SC_RTSIG_MAX 48 213#define _SC_SEM_NSEMS_MAX 49 214#define _SC_SEM_VALUE_MAX 50 215#define _SC_SIGQUEUE_MAX 51 216#define _SC_TIMER_MAX 52 217#endif 218 219#if __POSIX_VISIBLE >= 200112 220#define _SC_2_PBS 59 /* user */ 221#define _SC_2_PBS_ACCOUNTING 60 /* user */ 222#define _SC_2_PBS_CHECKPOINT 61 /* user */ 223#define _SC_2_PBS_LOCATE 62 /* user */ 224#define _SC_2_PBS_MESSAGE 63 /* user */ 225#define _SC_2_PBS_TRACK 64 /* user */ 226#define _SC_ADVISORY_INFO 65 227#define _SC_BARRIERS 66 /* user */ 228#define _SC_CLOCK_SELECTION 67 229#define _SC_CPUTIME 68 230#define _SC_FILE_LOCKING 69 231#define _SC_GETGR_R_SIZE_MAX 70 /* user */ 232#define _SC_GETPW_R_SIZE_MAX 71 /* user */ 233#define _SC_HOST_NAME_MAX 72 234#define _SC_LOGIN_NAME_MAX 73 235#define _SC_MONOTONIC_CLOCK 74 236#define _SC_MQ_PRIO_MAX 75 237#define _SC_READER_WRITER_LOCKS 76 /* user */ 238#define _SC_REGEXP 77 /* user */ 239#define _SC_SHELL 78 /* user */ 240#define _SC_SPAWN 79 /* user */ 241#define _SC_SPIN_LOCKS 80 /* user */ 242#define _SC_SPORADIC_SERVER 81 243#define _SC_THREAD_ATTR_STACKADDR 82 /* user */ 244#define _SC_THREAD_ATTR_STACKSIZE 83 /* user */ 245#define _SC_THREAD_CPUTIME 84 /* user */ 246#define _SC_THREAD_DESTRUCTOR_ITERATIONS 85 /* user */ 247#define _SC_THREAD_KEYS_MAX 86 /* user */ 248#define _SC_THREAD_PRIO_INHERIT 87 /* user */ 249#define _SC_THREAD_PRIO_PROTECT 88 /* user */ 250#define _SC_THREAD_PRIORITY_SCHEDULING 89 /* user */ 251#define _SC_THREAD_PROCESS_SHARED 90 /* user */ 252#define _SC_THREAD_SAFE_FUNCTIONS 91 /* user */ 253#define _SC_THREAD_SPORADIC_SERVER 92 /* user */ 254#define _SC_THREAD_STACK_MIN 93 /* user */ 255#define _SC_THREAD_THREADS_MAX 94 /* user */ 256#define _SC_TIMEOUTS 95 /* user */ 257#define _SC_THREADS 96 /* user */ 258#define _SC_TRACE 97 /* user */ 259#define _SC_TRACE_EVENT_FILTER 98 /* user */ 260#define _SC_TRACE_INHERIT 99 /* user */ 261#define _SC_TRACE_LOG 100 /* user */ 262#define _SC_TTY_NAME_MAX 101 /* user */ 263#define _SC_TYPED_MEMORY_OBJECTS 102 264#define _SC_V6_ILP32_OFF32 103 /* user */ 265#define _SC_V6_ILP32_OFFBIG 104 /* user */ 266#define _SC_V6_LP64_OFF64 105 /* user */ 267#define _SC_V6_LPBIG_OFFBIG 106 /* user */ 268#define _SC_IPV6 118 269#define _SC_RAW_SOCKETS 119 270#define _SC_SYMLOOP_MAX 120 271#endif 272 273#if __XSI_VISIBLE 274#define _SC_ATEXIT_MAX 107 /* user */ 275#define _SC_IOV_MAX 56 276#define _SC_PAGE_SIZE _SC_PAGESIZE 277#define _SC_XOPEN_CRYPT 108 /* user */ 278#define _SC_XOPEN_ENH_I18N 109 /* user */ 279#define _SC_XOPEN_LEGACY 110 /* user */ 280#define _SC_XOPEN_REALTIME 111 281#define _SC_XOPEN_REALTIME_THREADS 112 282#define _SC_XOPEN_SHM 113 283#define _SC_XOPEN_STREAMS 114 284#define _SC_XOPEN_UNIX 115 285#define _SC_XOPEN_VERSION 116 286#define _SC_XOPEN_XCU_VERSION 117 /* user */ 287#endif 288 289#if __BSD_VISIBLE 290#define _SC_NPROCESSORS_CONF 57 291#define _SC_NPROCESSORS_ONLN 58 292#define _SC_CPUSET_SIZE 122 293#endif 294 295/* Extensions found in Solaris and Linux. */ 296#define _SC_PHYS_PAGES 121 297 298/* Keys for the confstr(3) function. */ 299#if __POSIX_VISIBLE >= 199209 300#define _CS_PATH 1 /* default value of PATH */ 301#endif 302 303#if __POSIX_VISIBLE >= 200112 304#define _CS_POSIX_V6_ILP32_OFF32_CFLAGS 2 305#define _CS_POSIX_V6_ILP32_OFF32_LDFLAGS 3 306#define _CS_POSIX_V6_ILP32_OFF32_LIBS 4 307#define _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS 5 308#define _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS 6 309#define _CS_POSIX_V6_ILP32_OFFBIG_LIBS 7 310#define _CS_POSIX_V6_LP64_OFF64_CFLAGS 8 311#define _CS_POSIX_V6_LP64_OFF64_LDFLAGS 9 312#define _CS_POSIX_V6_LP64_OFF64_LIBS 10 313#define _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS 11 314#define _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS 12 315#define _CS_POSIX_V6_LPBIG_OFFBIG_LIBS 13 316#define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS 14 317#endif 318 319__BEGIN_DECLS 320/* 1003.1-1990 */ 321void _exit(int) __dead2; 322int access(const char *, int); 323unsigned int alarm(unsigned int); 324int chdir(const char *); 325int chown(const char *, uid_t, gid_t); 326int close(int); 327void closefrom(int); 328int dup(int); 329int dup2(int, int); 330int execl(const char *, const char *, ...) __null_sentinel; 331int execle(const char *, const char *, ...); 332int execlp(const char *, const char *, ...) __null_sentinel; 333int execv(const char *, char * const *); 334int execve(const char *, char * const *, char * const *); 335int execvp(const char *, char * const *); 336pid_t fork(void); 337long fpathconf(int, int); 338char *getcwd(char *, size_t); 339gid_t getegid(void); 340uid_t geteuid(void); 341gid_t getgid(void); 342int getgroups(int, gid_t []); 343char *getlogin(void); 344pid_t getpgrp(void); 345pid_t getpid(void); 346pid_t getppid(void); 347uid_t getuid(void); 348int isatty(int); 349int link(const char *, const char *); 350#ifndef _LSEEK_DECLARED 351#define _LSEEK_DECLARED 352off_t lseek(int, off_t, int); 353#endif 354long pathconf(const char *, int); 355int pause(void); 356int pipe(int *); 357ssize_t read(int, void *, size_t); 358int rmdir(const char *); 359int setgid(gid_t); 360int setpgid(pid_t, pid_t); 361pid_t setsid(void); 362int setuid(uid_t); 363unsigned int sleep(unsigned int); 364long sysconf(int); 365pid_t tcgetpgrp(int); 366int tcsetpgrp(int, pid_t); 367char *ttyname(int); 368int ttyname_r(int, char *, size_t); 369int unlink(const char *); 370ssize_t write(int, const void *, size_t); 371 372/* 1003.2-1992 */ 373#if __POSIX_VISIBLE >= 199209 || __XSI_VISIBLE 374size_t confstr(int, char *, size_t); 375#ifndef _GETOPT_DECLARED 376#define _GETOPT_DECLARED 377int getopt(int, char * const [], const char *); 378 379extern char *optarg; /* getopt(3) external variables */ 380extern int optind, opterr, optopt; 381#endif /* _GETOPT_DECLARED */ 382#endif 383 384/* ISO/IEC 9945-1: 1996 */ 385#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE 386int fsync(int); 387int fdatasync(int); 388 389/* 390 * ftruncate() was in the POSIX Realtime Extension (it's used for shared 391 * memory), but truncate() was not. 392 */ 393#ifndef _FTRUNCATE_DECLARED 394#define _FTRUNCATE_DECLARED 395int ftruncate(int, off_t); 396#endif 397#endif 398 399#if __POSIX_VISIBLE >= 199506 400int getlogin_r(char *, int); 401#endif 402 403/* 1003.1-2001 */ 404#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE 405int fchown(int, uid_t, gid_t); 406ssize_t readlink(const char * __restrict, char * __restrict, size_t); 407#endif 408#if __POSIX_VISIBLE >= 200112 409int gethostname(char *, size_t); 410int setegid(gid_t); 411int seteuid(uid_t); 412#endif 413 414/* 1003.1-2008 */ 415#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE 416int getsid(pid_t _pid); 417int fchdir(int); 418int getpgid(pid_t _pid); 419int lchown(const char *, uid_t, gid_t); 420ssize_t pread(int, void *, size_t, off_t); 421ssize_t pwrite(int, const void *, size_t, off_t); 422 423/* See comment at ftruncate() above. */ 424#ifndef _TRUNCATE_DECLARED 425#define _TRUNCATE_DECLARED 426int truncate(const char *, off_t); 427#endif 428#endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */ 429 430#if __POSIX_VISIBLE >= 200809 431int faccessat(int, const char *, int, int); 432int fchownat(int, const char *, uid_t, gid_t, int); 433int fexecve(int, char *const [], char *const []); 434int linkat(int, const char *, int, const char *, int); 435ssize_t readlinkat(int, const char * __restrict, char * __restrict, size_t); 436int symlinkat(const char *, int, const char *); 437int unlinkat(int, const char *, int); 438#endif /* __POSIX_VISIBLE >= 200809 */ 439 440/* 441 * symlink() was originally in POSIX.1a, which was withdrawn after 442 * being overtaken by events (1003.1-2001). It was in XPG4.2, and of 443 * course has been in BSD since 4.2. 444 */ 445#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE >= 402 446int symlink(const char * __restrict, const char * __restrict); 447#endif 448 449/* X/Open System Interfaces */ 450#if __XSI_VISIBLE 451char *crypt(const char *, const char *); 452/* char *ctermid(char *); */ /* XXX ??? */ 453int encrypt(char *, int); 454long gethostid(void); 455int lockf(int, int, off_t); 456int nice(int); 457int setregid(gid_t, gid_t); 458int setreuid(uid_t, uid_t); 459 460#ifndef _SWAB_DECLARED 461#define _SWAB_DECLARED 462void swab(const void * __restrict, void * __restrict, ssize_t); 463#endif /* _SWAB_DECLARED */ 464 465void sync(void); 466 467#endif /* __XSI_VISIBLE */ 468 469#if (__XSI_VISIBLE && __XSI_VISIBLE <= 500) || __BSD_VISIBLE 470int brk(const void *); 471int chroot(const char *); 472int getdtablesize(void); 473int getpagesize(void) __pure2; 474char *getpass(const char *); 475void *sbrk(intptr_t); 476#endif 477 478#if (__XSI_VISIBLE && __XSI_VISIBLE <= 600) || __BSD_VISIBLE 479char *getwd(char *); /* obsoleted by getcwd() */ 480useconds_t 481 ualarm(useconds_t, useconds_t); 482int usleep(useconds_t); 483pid_t vfork(void) __returns_twice; 484#endif 485 486#if __BSD_VISIBLE 487struct timeval; /* select(2) */ 488int acct(const char *); 489int async_daemon(void); 490int check_utility_compat(const char *); 491const char * 492 crypt_get_format(void); 493int crypt_set_format(const char *); 494int des_cipher(const char *, char *, long, int); 495int des_setkey(const char *key); 496int dup3(int, int, int); 497int eaccess(const char *, int); 498void endusershell(void); 499int exect(const char *, char * const *, char * const *); 500int execvP(const char *, const char *, char * const *); 501int feature_present(const char *); 502char *fflagstostr(u_long); 503int getdomainname(char *, int); 504int getgrouplist(const char *, gid_t, gid_t *, int *); 505int getloginclass(char *, size_t); 506mode_t getmode(const void *, mode_t); 507int getosreldate(void); 508int getpeereid(int, uid_t *, gid_t *); 509int getresgid(gid_t *, gid_t *, gid_t *); 510int getresuid(uid_t *, uid_t *, uid_t *); 511char *getusershell(void); 512int initgroups(const char *, gid_t); 513int iruserok(unsigned long, int, const char *, const char *); 514int iruserok_sa(const void *, int, int, const char *, const char *); 515int issetugid(void); 516void __FreeBSD_libc_enter_restricted_mode(void); 517long lpathconf(const char *, int); 518#ifndef _MKDTEMP_DECLARED 519char *mkdtemp(char *); 520#define _MKDTEMP_DECLARED 521#endif 522#ifndef _MKNOD_DECLARED 523int mknod(const char *, mode_t, dev_t); 524#define _MKNOD_DECLARED 525#endif 526#ifndef _MKSTEMP_DECLARED 527int mkstemp(char *); 528#define _MKSTEMP_DECLARED 529#endif 530int mkstemps(char *, int); 531#ifndef _MKTEMP_DECLARED 532char *mktemp(char *); 533#define _MKTEMP_DECLARED 534#endif 535int nfssvc(int, void *); 536int nlm_syscall(int, int, int, char **); 537int pipe2(int *, int); 538int profil(char *, size_t, vm_offset_t, int); 539int rcmd(char **, int, const char *, const char *, const char *, int *); 540int rcmd_af(char **, int, const char *, 541 const char *, const char *, int *, int); 542int rcmdsh(char **, int, const char *, 543 const char *, const char *, const char *); 544char *re_comp(const char *); 545int re_exec(const char *); 546int reboot(int); 547int revoke(const char *); 548pid_t rfork(int) __returns_twice; 549pid_t rfork_thread(int, void *, int (*)(void *), void *); 550int rresvport(int *); 551int rresvport_af(int *, int); 552int ruserok(const char *, int, const char *, const char *); 553#ifndef _SELECT_DECLARED 554#define _SELECT_DECLARED 555int select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 556#endif 557int setdomainname(const char *, int); 558int setgroups(int, const gid_t *); 559void sethostid(long); 560int sethostname(const char *, int); 561#ifndef _SETKEY_DECLARED 562int setkey(const char *); 563#define _SETKEY_DECLARED 564#endif 565int setlogin(const char *); 566int setloginclass(const char *); 567void *setmode(const char *); 568int setpgrp(pid_t, pid_t); /* obsoleted by setpgid() */ 569void setproctitle(const char *_fmt, ...) __printf0like(1, 2); 570void setproctitle_fast(const char *_fmt, ...) __printf0like(1, 2); 571int setresgid(gid_t, gid_t, gid_t); 572int setresuid(uid_t, uid_t, uid_t); 573int setrgid(gid_t); 574int setruid(uid_t); 575void setusershell(void); 576int strtofflags(char **, u_long *, u_long *); 577int swapon(const char *); 578int swapoff(const char *); 579int syscall(int, ...); 580off_t __syscall(quad_t, ...); 581int undelete(const char *); 582int unwhiteout(const char *); 583void *valloc(size_t); /* obsoleted by malloc() */ 584 585#ifndef _OPTRESET_DECLARED 586#define _OPTRESET_DECLARED 587extern int optreset; /* getopt(3) external variable */ 588#endif 589#endif /* __BSD_VISIBLE */ 590__END_DECLS 591 592#endif /* !_UNISTD_H_ */ 593