/*      $NetBSD: unistd.h,v 1.169 2024/11/01 18:48:17 nia Exp $ */

/*-
 * Copyright (c) 1998, 1999, 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Klaus Klein.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1991, 1993, 1994
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)unistd.h    8.12 (Berkeley) 4/27/95
 */

#ifndef _UNISTD_H_
#define _UNISTD_H_

#include <machine/ansi.h>
#include <machine/int_types.h>
#include <sys/cdefs.h>
#include <sys/featuretest.h>
#include <sys/types.h>
#include <sys/unistd.h>

#if _FORTIFY_SOURCE > 0
#include <ssp/unistd.h>
#endif

/*
 * IEEE Std 1003.1-90
 */
#define STDIN_FILENO    0       /* standard input file descriptor */
#define STDOUT_FILENO   1       /* standard output file descriptor */
#define STDERR_FILENO   2       /* standard error file descriptor */

#include <sys/null.h>

__BEGIN_DECLS
__dead   void _exit(int);
int      access(const char *, int);
unsigned int alarm(unsigned int);
int      chdir(const char *);
#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
int     chown(const char *, uid_t, gid_t) __RENAME(__posix_chown);
#else
int     chown(const char *, uid_t, gid_t);
#endif /* defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) */
int      close(int);
size_t   confstr(int, char *, size_t);
#ifndef __CUSERID_DECLARED
#define __CUSERID_DECLARED
/* also declared in stdio.h */
char    *cuserid(char *);       /* obsolete */
#endif /* __CUSERID_DECLARED */
int      dup(int);
int      dup2(int, int);
int      execl(const char *, const char *, ...) __null_sentinel;
int      execle(const char *, const char *, ...);
int      execlp(const char *, const char *, ...) __null_sentinel;
int      execv(const char *, char * const *);
int      execve(const char *, char * const *, char * const *);
int      execvp(const char *, char * const *);
pid_t    fork(void);
long     fpathconf(int, int);
#if __SSP_FORTIFY_LEVEL == 0
char    *getcwd(char *, size_t);
#endif
gid_t    getegid(void);
uid_t    geteuid(void);
gid_t    getgid(void);
int      getgroups(int, gid_t []);
__aconst char *getlogin(void);
int      getlogin_r(char *, size_t);
pid_t    getpgrp(void);
pid_t    getpid(void);
pid_t    getppid(void);
uid_t    getuid(void);
int      isatty(int);
int      link(const char *, const char *);
long     pathconf(const char *, int);
int      pause(void);
int      pipe(int *);
#if __SSP_FORTIFY_LEVEL == 0
ssize_t  read(int, void *, size_t);
#endif
int      rmdir(const char *);
int      setgid(gid_t);
int      setpgid(pid_t, pid_t);
pid_t    setsid(void);
int      setuid(uid_t);
unsigned int     sleep(unsigned int);
long     sysconf(int);
pid_t    tcgetpgrp(int);
int      tcsetpgrp(int, pid_t);
__aconst char *ttyname(int);
int      unlink(const char *);
ssize_t  write(int, const void *, size_t);


/*
 * IEEE Std 1003.2-92, adopted in X/Open Portability Guide Issue 4 and later
 */
#if (_POSIX_C_SOURCE - 0) >= 2 || defined(_XOPEN_SOURCE) || \
    defined(_NETBSD_SOURCE)
int      getopt(int, char * const [], const char *);

extern   char *optarg;                  /* getopt(3) external variables */
extern   int opterr;
extern   int optind;
extern   int optopt;
#endif

/*
 * The Open Group Base Specifications, Issue 5; IEEE Std 1003.1-2001 (POSIX)
 */
#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 500 || \
    defined(_NETBSD_SOURCE)
#if __SSP_FORTIFY_LEVEL == 0
ssize_t  readlink(const char * __restrict, char * __restrict, size_t);
#endif
#endif

/*
 * The Open Group Base Specifications, Issue 6; IEEE Std 1003.1-2001 (POSIX)
 */
#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 600 || \
    defined(_NETBSD_SOURCE)
int      gethostname(char *, size_t);
int      setegid(gid_t);
int      seteuid(uid_t);
#endif

/*
 * The following three syscalls are also defined in <sys/types.h>
 * We protect them against double declarations.
 */
#ifndef __OFF_T_SYSCALLS_DECLARED
#define __OFF_T_SYSCALLS_DECLARED
off_t    lseek(int, off_t, int);
int      truncate(const char *, off_t);
/*
 * IEEE Std 1003.1b-93,
 * also found in X/Open Portability Guide >= Issue 4 Version 2
 */
#if (_POSIX_C_SOURCE - 0) >= 199309L || \
    (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
int      ftruncate(int, off_t);
#endif
#endif /* __OFF_T_SYSCALLS_DECLARED */


/*
 * IEEE Std 1003.1b-93, adopted in X/Open CAE Specification Issue 5 Version 2
 */
#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
    defined(_NETBSD_SOURCE)
int      fdatasync(int);
int      fsync(int);
#endif


/*
 * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
 */
#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
    defined(_REENTRANT) || defined(_NETBSD_SOURCE)
int      ttyname_r(int, char *, size_t);
#ifndef __PTHREAD_ATFORK_DECLARED
#define __PTHREAD_ATFORK_DECLARED
int      pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
#endif
#endif

/*
 * X/Open Portability Guide, all issues
 */
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
int      chroot(const char *);
int      nice(int);
#endif


/*
 * X/Open Portability Guide >= Issue 4
 */
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
__aconst char *crypt(const char *, const char *);
int      encrypt(char *, int);
char    *getpass(const char *);
#endif
#if defined(_XOPEN_SOURCE) || (_POSIX_C_SOURCE - 0) >= 200809L || \
    defined(_NETBSD_SOURCE)
pid_t    getsid(pid_t);
#endif


/*
 * X/Open Portability Guide >= Issue 4 Version 2
 */
#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
#ifndef _BSD_INTPTR_T_
typedef __intptr_t      intptr_t;
#define _BSD_INTPTR_T_
#endif

#define F_ULOCK         0
#define F_LOCK          1
#define F_TLOCK         2
#define F_TEST          3

int      brk(void *);
int      fchdir(int);
#if defined(_XOPEN_SOURCE)
int      fchown(int, uid_t, gid_t) __RENAME(__posix_fchown);
#else
int      fchown(int, uid_t, gid_t);
#endif
int      getdtablesize(void);
long     gethostid(void);
__pure int
         getpagesize(void);             /* legacy */
pid_t    getpgid(pid_t);
#if defined(_XOPEN_SOURCE)
int      lchown(const char *, uid_t, gid_t) __RENAME(__posix_lchown);
#else
int      lchown(const char *, uid_t, gid_t);
#endif
int      lockf(int, int, off_t);
void    *sbrk(intptr_t);
/* XXX prototype wrong! */
int      setpgrp(pid_t, pid_t);                 /* obsoleted by setpgid() */
int      setregid(gid_t, gid_t);
int      setreuid(uid_t, uid_t);
void     swab(const void * __restrict, void * __restrict, ssize_t);
int      symlink(const char *, const char *);
void     sync(void);
useconds_t ualarm(useconds_t, useconds_t);
int      usleep(useconds_t);
#ifndef __LIBC12_SOURCE__
pid_t    vfork(void) __RENAME(__vfork14) __returns_twice;
#endif

#ifndef __AUDIT__
char    *getwd(char *);                         /* obsoleted by getcwd() */
#endif
#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */


/*
 * X/Open CAE Specification Issue 5 Version 2
 */
#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 500 || \
    defined(_NETBSD_SOURCE)
ssize_t  pread(int, void *, size_t, off_t);
ssize_t  pwrite(int, const void *, size_t, off_t);
#endif /* (_POSIX_C_SOURCE - 0) >= 200112L || ... */

/*
 * X/Open Extended API set 2 (a.k.a. C063)
 */
#if (_POSIX_C_SOURCE - 0) >= 200809L || (_XOPEN_SOURCE - 0 >= 700) || \
    defined(_NETBSD_SOURCE)
int     linkat(int, const char *, int, const char *, int);
int     renameat(int, const char *, int, const char *);
int     faccessat(int, const char *, int, int);
int     fchownat(int, const char *, uid_t, gid_t, int);
ssize_t readlinkat(int, const char *, char *, size_t);
int     symlinkat(const char *, int, const char *);
int     unlinkat(int, const char *, int);
int     fexecve(int, char * const *, char * const *);
#endif

/*
 * IEEE Std 1003.1-2024 (POSIX.1-2024)
 */
#if (_POSIX_C_SOURCE - 0) >= 202405L || (_XOPEN_SOURCE - 0 >= 800) || \
    defined(_NETBSD_SOURCE)
int      getentropy(void *, size_t);
#ifndef __LIBC12_SOURCE__
int      dup3(int, int, int) __RENAME(__dup3100);
#endif
int      pipe2(int *, int);
#endif

/*
 * Implementation-defined extensions
 */
#if defined(_NETBSD_SOURCE)
int      acct(const char *);
int      closefrom(int);
int      des_cipher(const char *, char *, long, int);
int      des_setkey(const char *);
void     endusershell(void);
int      exect(const char *, char * const *, char * const *);
int      execvpe(const char *, char * const *, char * const *);
int      execlpe(const char *, const char *, ...);
int      fchroot(int);
int      fdiscard(int, off_t, off_t);
int      fsync_range(int, int, off_t, off_t);
int      getdomainname(char *, size_t);
int      getgrouplist(const char *, gid_t, gid_t *, int *);
int      getgroupmembership(const char *, gid_t, gid_t *, int, int *);
mode_t   getmode(const void *, mode_t);
char    *getpassfd(const char *, char *, size_t, int *, int, int);
#define GETPASS_NEED_TTY        0x001   /* Fail if we cannot set tty */
#define GETPASS_FAIL_EOF        0x002   /* Fail on EOF */
#define GETPASS_BUF_LIMIT       0x004   /* beep on buffer limit */
#define GETPASS_NO_SIGNAL       0x008   /* don't make ttychars send signals */
#define GETPASS_NO_BEEP         0x010   /* don't beep */
#define GETPASS_ECHO            0x020   /* echo characters as they are typed */
#define GETPASS_ECHO_STAR       0x040   /* echo '*' for each character */
#define GETPASS_7BIT            0x080   /* mask the high bit each char */
#define GETPASS_FORCE_LOWER     0x100   /* lowercase each char */
#define GETPASS_FORCE_UPPER     0x200   /* uppercase each char */
#define GETPASS_ECHO_NL         0x400   /* echo a newline if successful */

char    *getpass_r(const char *, char *, size_t);
int      getpeereid(int, uid_t *, gid_t *);
__aconst char *getusershell(void);
int      initgroups(const char *, gid_t);
int      iruserok(uint32_t, int, const char *, const char *);
int      issetugid(void);
long     lpathconf(const char *, int);
int      mkstemps(char *, int);
int      nfssvc(int, void *);
int      profil(char *, size_t, unsigned long, unsigned int);
#ifndef __PSIGNAL_DECLARED
#define __PSIGNAL_DECLARED
/* also in signal.h */
void     psignal(int, const char *);
#endif /* __PSIGNAL_DECLARED */
int      rcmd(char **, int, const char *, const char *, const char *, int *);
int      reboot(int, char *);
int      revoke(const char *);
int      rresvport(int *);
int      ruserok(const char *, int, const char *, const char *);
int      setdomainname(const char *, size_t);
int      setgroups(int, const gid_t *);
int      sethostid(long);
int      sethostname(const char *, size_t);
int      setlogin(const char *);
void    *setmode(const char *);
int      setrgid(gid_t);
int      setruid(uid_t);
void     setusershell(void);
void     strmode(mode_t, char *);
#ifndef __STRSIGNAL_DECLARED
#define __STRSIGNAL_DECLARED
/* backwards-compatibility; also in string.h */
__aconst char *strsignal(int);
#endif /* __STRSIGNAL_DECLARED */
int      swapctl(int, void *, int);
int      swapon(const char *);                  /* obsoleted by swapctl() */
int      syscall(int, ...);
quad_t   __syscall(quad_t, ...);
int      undelete(const char *);

#if 1 /*INET6*/
int      rcmd_af(char **, int, const char *,
            const char *, const char *, int *, int);
int      rresvport_af(int *, int);
int      rresvport_af_addr(int *, int, void *);
int      iruserok_sa(const void *, int, int, const char *, const char *);
#endif

#ifndef __SYS_SIGLIST_DECLARED
#define __SYS_SIGLIST_DECLARED
/* also in signal.h */
extern const char *const *sys_siglist __RENAME(__sys_siglist14);
#endif /* __SYS_SIGLIST_DECLARED */
extern   int optreset;          /* getopt(3) external variable */
extern   char *suboptarg;       /* getsubopt(3) external variable */
#endif

#ifdef _LIBC_INTERNAL
pid_t   __fork(void);
pid_t   __locked_fork(int *) __weak;
#endif

__END_DECLS
#endif /* !_UNISTD_H_ */