/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2014 PALO, Richard.
 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
 * Copyright (c) 2013 Gary Mills
 *
 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*      Copyright (c) 1988 AT&T */
/*        All Rights Reserved   */

/* Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved. */

#ifndef _UNISTD_H
#define _UNISTD_H

#include <sys/feature_tests.h>

#include <sys/null.h>
#include <sys/types.h>
#include <sys/unistd.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* Symbolic constants for the "access" routine: */
#define R_OK    4       /* Test for Read permission */
#define W_OK    2       /* Test for Write permission */
#define X_OK    1       /* Test for eXecute permission */
#define F_OK    0       /* Test for existence of File */

#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
#define F_ULOCK 0       /* Unlock a previously locked region */
#define F_LOCK  1       /* Lock a region for exclusive use */
#define F_TLOCK 2       /* Test and lock a region for exclusive use */
#define F_TEST  3       /* Test a region for other processes locks */
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */

/* Symbolic constants for the "lseek" routine: */

#ifndef SEEK_SET
#define SEEK_SET        0       /* Set file pointer to "offset" */
#endif

#ifndef SEEK_CUR
#define SEEK_CUR        1       /* Set file pointer to current plus "offset" */
#endif

#ifndef SEEK_END
#define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
#endif

#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
#ifndef SEEK_DATA
#define SEEK_DATA       3       /* Set file pointer to next data past offset */
#endif

#ifndef SEEK_HOLE
#define SEEK_HOLE       4       /* Set file pointer to next hole past offset */
#endif
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */

#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
/* Path names: */
#define GF_PATH "/etc/group"    /* Path name of the "group" file */
#define PF_PATH "/etc/passwd"   /* Path name of the "passwd" file */
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */

/*
 * compile-time symbolic constants,
 * Support does not mean the feature is enabled.
 * Use pathconf/sysconf to obtain actual configuration value.
 */

/* Values unchanged in UNIX 03 */
#define _POSIX_ASYNC_IO                 1
#define _POSIX_JOB_CONTROL              1
#define _POSIX_SAVED_IDS                1
#define _POSIX_SYNC_IO                  1

/*
 * POSIX.1b compile-time symbolic constants.
 */
#if defined(_XPG6)
#define _POSIX_ASYNCHRONOUS_IO          200112L
#define _POSIX_FSYNC                    200112L
#define _POSIX_MAPPED_FILES             200112L
#define _POSIX_MEMLOCK                  200112L
#define _POSIX_MEMLOCK_RANGE            200112L
#define _POSIX_MEMORY_PROTECTION        200112L
#define _POSIX_MESSAGE_PASSING          200112L
#define _POSIX_PRIORITY_SCHEDULING      200112L
#define _POSIX_REALTIME_SIGNALS         200112L
#define _POSIX_SEMAPHORES               200112L
#define _POSIX_SHARED_MEMORY_OBJECTS    200112L
#define _POSIX_SYNCHRONIZED_IO          200112L
#else
#define _POSIX_ASYNCHRONOUS_IO          1
#define _POSIX_FSYNC                    1
#define _POSIX_MAPPED_FILES             1
#define _POSIX_MEMLOCK                  1
#define _POSIX_MEMLOCK_RANGE            1
#define _POSIX_MEMORY_PROTECTION        1
#define _POSIX_MESSAGE_PASSING          1
#define _POSIX_PRIORITY_SCHEDULING      1
#define _POSIX_REALTIME_SIGNALS         1
#define _POSIX_SEMAPHORES               1
#define _POSIX_SHARED_MEMORY_OBJECTS    1
#define _POSIX_SYNCHRONIZED_IO          1
#endif

/*
 * POSIX.1c compile-time symbolic constants.
 */
#if defined(_XPG6)
#define _POSIX_THREAD_SAFE_FUNCTIONS            200112L
#define _POSIX_THREADS                          200112L
#define _POSIX_THREAD_ATTR_STACKADDR            200112L
#define _POSIX_THREAD_ATTR_STACKSIZE            200112L
#define _POSIX_THREAD_PROCESS_SHARED            200112L
#define _POSIX_THREAD_PRIORITY_SCHEDULING       200112L
#define _POSIX_TIMERS                           200112L
#else
#define _POSIX_THREAD_SAFE_FUNCTIONS            1
#define _POSIX_THREADS                          1
#define _POSIX_THREAD_ATTR_STACKADDR            1
#define _POSIX_THREAD_ATTR_STACKSIZE            1
#define _POSIX_THREAD_PROCESS_SHARED            1
#define _POSIX_THREAD_PRIORITY_SCHEDULING       1
#define _POSIX_TIMERS                           1
#endif

/* New in UNIX 03 */
#define _POSIX_ADVISORY_INFO                    200112L
#define _POSIX_BARRIERS                         200112L
#define _POSIX_CLOCK_SELECTION                  200112L
#define _POSIX_IPV6                             200112L
#define _POSIX_MONOTONIC_CLOCK                  200112L
#define _POSIX_RAW_SOCKETS                      200112L
#define _POSIX_READER_WRITER_LOCKS              200112L
#define _POSIX_SPAWN                            200112L
#define _POSIX_SPIN_LOCKS                       200112L
#define _POSIX_TIMEOUTS                         200112L

/*
 * Support for the POSIX.1 mutex protocol attribute. For realtime applications
 * which need mutexes to support priority inheritance/ceiling.
 */
#if defined(_XPG6)
#define _POSIX_THREAD_PRIO_INHERIT              200112L
#define _POSIX_THREAD_PRIO_PROTECT              200112L
#else
#define _POSIX_THREAD_PRIO_INHERIT              1
#define _POSIX_THREAD_PRIO_PROTECT              1
#endif

#ifndef _POSIX_VDISABLE
#define _POSIX_VDISABLE         0
#endif

#define STDIN_FILENO    0
#define STDOUT_FILENO   1
#define STDERR_FILENO   2

/*
 * Large File Summit-related announcement macros.  The system supports both
 * the additional and transitional Large File Summit interfaces.  (The final
 * two macros provide a finer granularity breakdown of _LFS64_LARGEFILE.)
 */
#define _LFS_LARGEFILE          1
#define _LFS64_LARGEFILE        1
#define _LFS64_STDIO            1
#define _LFS64_ASYNCHRONOUS_IO  1

/* large file compilation environment setup */
#if !defined(_LP64) && _FILE_OFFSET_BITS == 64
#ifdef  __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname        ftruncate       ftruncate64
#pragma redefine_extname        lseek           lseek64
#pragma redefine_extname        pread           pread64
#pragma redefine_extname        pwrite          pwrite64
#pragma redefine_extname        truncate        truncate64
#pragma redefine_extname        lockf           lockf64
#pragma redefine_extname        tell            tell64
#else   /* __PRAGMA_REDEFINE_EXTNAME */
#define ftruncate                       ftruncate64
#define lseek                           lseek64
#define pread                           pread64
#define pwrite                          pwrite64
#define truncate                        truncate64
#define lockf                           lockf64
#define tell                            tell64
#endif  /* __PRAGMA_REDEFINE_EXTNAME */
#endif  /* !_LP64 && _FILE_OFFSET_BITS == 64 */

/* In the LP64 compilation environment, the APIs are already large file */
#if defined(_LP64) && defined(_LARGEFILE64_SOURCE)
#ifdef  __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname        ftruncate64     ftruncate
#pragma redefine_extname        lseek64         lseek
#pragma redefine_extname        pread64         pread
#pragma redefine_extname        pwrite64        pwrite
#pragma redefine_extname        truncate64      truncate
#pragma redefine_extname        lockf64         lockf
#pragma redefine_extname        tell64          tell
#else   /* __PRAGMA_REDEFINE_EXTNAME */
#define ftruncate64                     ftruncate
#define lseek64                         lseek
#define pread64                         pread
#define pwrite64                        pwrite
#define truncate64                      truncate
#define lockf64                         lockf
#define tell64                          tell
#endif  /* __PRAGMA_REDEFINE_EXTNAME */
#endif  /* _LP64 && _LARGEFILE64_SOURCE */

extern int access(const char *, int);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int acct(const char *);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern unsigned alarm(unsigned);
/* Marked as LEGACY in SUSv2 and removed in SUSv3 */
#if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
        defined(__EXTENSIONS__)
extern int brk(void *);
#endif /* !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2)... */
extern int chdir(const char *);
extern int chown(const char *, uid_t, gid_t);
/* Marked as LEGACY in SUSv2 and removed in SUSv3 */
#if !defined(_POSIX_C_SOURCE) || (defined(_XOPEN_SOURCE) && \
        !defined(_XPG6)) || defined(__EXTENSIONS__)
extern int chroot(const char *);
#endif /* !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE))... */
extern int close(int);
#if defined(_XPG4) || defined(__EXTENSIONS__)
extern size_t confstr(int, char *, size_t);
extern char *crypt(const char *, const char *);
#endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
#if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
        defined(__EXTENSIONS__)
extern char *ctermid(char *);
#endif /* (!defined(_POSIX_C_SOURCE) ... */
#if !defined(__XOPEN_OR_POSIX) || defined(_REENTRANT) || defined(__EXTENSIONS__)
extern char *ctermid_r(char *);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_REENTRANT) ... */
/* Marked as LEGACY in SUSv2 and removed in SUSv3 */
#if !defined(_XPG6) || defined(__EXTENSIONS__)
extern char *cuserid(char *);
#endif
extern int dup(int);
extern int dup2(int, int);
extern int dup3(int, int, int);
#if defined(_XPG4) || defined(__EXTENSIONS__)
extern void encrypt(char *, int);
#endif /* defined(XPG4) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void endusershell(void);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern int execl(const char *, const char *, ...);
extern int execle(const char *, const char *, ...);
extern int execlp(const char *, const char *, ...);
extern int execv(const char *, char *const *);
extern int execve(const char *, char *const *, char *const *);
extern int execvp(const char *, char *const *);
#if defined(_XPG7) || !defined(_STRICT_SYMBOLS)
extern int fexecve(int, char *const[], char *const[]);
#endif
#if !defined(_STRICT_SYMBOLS)
extern int execvpe(const char *, char *const [], char *const []);
extern int syncfs(int);
#endif  /* !_STRICT_SYMBOLS */
extern void _exit(int)
        __NORETURN;
/*
 * The following fattach prototype is duplicated in <stropts.h>. The
 * duplication is necessitated by XPG4.2 which requires the prototype
 * be defined in <stropts.h>.
 */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int fattach(int, const char *);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int fchdir(int);
extern int fchown(int, uid_t, gid_t);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int fchroot(int);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || \
        defined(__EXTENSIONS__)
extern int fdatasync(int);
#endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
/*
 * The following fdetach prototype is duplicated in <stropts.h>. The
 * duplication is necessitated by XPG4.2 which requires the prototype
 * be defined in <stropts.h>.
 */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int fdetach(const char *);
#endif /* !defined(__XOPEN_OR_POSIX)... */
extern pid_t fork(void);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern pid_t fork1(void);
extern pid_t forkall(void);
#endif /* !defined(__XOPEN_OR_POSIX)... */
extern long fpathconf(int, int);
#if !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2) || \
        defined(__EXTENSIONS__)
extern int fsync(int);
#endif /* !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2)... */
#if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || defined(_XPG4_2) || \
        (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
        defined(__EXTENSIONS__)
extern int ftruncate(int, off_t);
#endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
extern char *getcwd(char *, size_t);
#if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
        defined(__EXTENSIONS__)
extern int getdtablesize(void);
#endif
extern gid_t getegid(void);
extern uid_t geteuid(void);
extern gid_t getgid(void);
extern int getgroups(int, gid_t *);
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern long gethostid(void);
#endif
#if defined(_XPG4_2)
extern int gethostname(char *, size_t);
#elif  !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int gethostname(char *, int);
#endif

#ifndef __GETLOGIN_DEFINED      /* Avoid duplicate in stdlib.h */
#define __GETLOGIN_DEFINED
#ifndef __USE_LEGACY_LOGNAME__
#ifdef  __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname getlogin getloginx
#else   /* __PRAGMA_REDEFINE_EXTNAME */
extern char *getloginx(void);
#define getlogin        getloginx
#endif  /* __PRAGMA_REDEFINE_EXTNAME */
#endif  /* __USE_LEGACY_LOGNAME__ */
extern char *getlogin(void);
#endif  /* __GETLOGIN_DEFINED */

#if defined(_XPG4) || defined(__EXTENSIONS__)
extern int  getopt(int, char *const *, const char *);
extern char *optarg;
extern int  opterr, optind, optopt;
/* Marked as LEGACY in SUSv2 and removed in SUSv3 */
#if !defined(_XPG6) || defined(__EXTENSIONS__)
extern char *getpass(const char *);
#endif
#endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
/* Marked as LEGACY in SUSv2 and removed in SUSv3 */
#if !defined(_XPG6) || defined(__EXTENSIONS__)
extern int getpagesize(void);
#endif
extern pid_t getpgid(pid_t);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern pid_t getpid(void);
extern pid_t getppid(void);
extern pid_t getpgrp(void);

#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
char *gettxt(const char *, const char *);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern pid_t getsid(pid_t);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern uid_t getuid(void);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern char *getusershell(void);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
/*
 * The following ioctl prototype is duplicated in <stropts.h>. The
 * duplication is necessitated by XPG4.2 which requires the prototype
 * be defined in <stropts.h>.  ioctl() is also duplicated in <sys/ioctl.h>
 * for broader portability aid.
 */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int ioctl(int, int, ...);
extern int isaexec(const char *, char *const *, char *const *);
extern int issetugid(void);
#endif
extern int isatty(int);
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int lchown(const char *, uid_t, gid_t);
#endif
extern int link(const char *, const char *);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern offset_t llseek(int, offset_t, int);
#endif
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
        (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
        defined(__EXTENSIONS__)
extern int lockf(int, int, off_t);
#endif
extern off_t lseek(int, off_t, int);
#if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
        defined(__EXTENSIONS__)
extern int nice(int);
#endif /* !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)... */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int mincore(caddr_t, size_t, char *);
#endif
extern long pathconf(const char *, int);
extern int pause(void);
extern int pipe(int *);
extern int pipe2(int *, int);
#if !defined(_POSIX_C_SOURCE) || defined(_XPG5) || \
        (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
        defined(__EXTENSIONS__)
extern ssize_t pread(int, void *, size_t, off_t);
#endif
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void profil(unsigned short *, size_t, unsigned long, unsigned int);
#endif
/*
 * pthread_atfork() is also declared in <pthread.h> as per SUSv3. The
 * declarations are identical. A change to either one may also require
 * appropriate namespace updates in order to avoid redeclaration
 * warnings in the case where both prototypes are exposed via inclusion
 * of both <pthread.h> and <unistd.h>.
 */
#if !defined(__XOPEN_OR_POSIX) || \
        ((_POSIX_C_SOURCE > 2) && !defined(_XPG6)) || \
        defined(__EXTENSIONS__)
extern int pthread_atfork(void (*) (void), void (*) (void), void (*) (void));
#endif /* !defined(__XOPEN_OR_POSIX) || ((_POSIX_C_SOURCE > 2) ... */
#if !defined(_LP64) && \
        (!defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__))
extern int ptrace(int, pid_t, int, int);
#endif
#if !defined(_POSIX_C_SOURCE) || defined(_XPG5) || \
        (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
        defined(__EXTENSIONS__)
extern ssize_t pwrite(int, const void *, size_t, off_t);
#endif
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
/* per RFC 3542; This is also defined in netdb.h */
extern int rcmd_af(char **, unsigned short, const char *, const char *,
        const char *, int *, int);
#endif
extern ssize_t read(int, void *, size_t);
#if !defined(__XOPEN_OR_POSIX) || \
        defined(_XPG4_2) || defined(__EXTENSIONS__)
extern ssize_t readlink(const char *_RESTRICT_KYWD, char *_RESTRICT_KYWD,
        size_t);
#endif
#if (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3) && !defined(_XPG4))) || \
        defined(__EXTENSIONS__)
#if __cplusplus >= 199711L
namespace std {
#endif
extern int rename(const char *, const char *);
#if __cplusplus >= 199711L
} /* end of namespace std */

using std::rename;
#endif /* __cplusplus >= 199711L */
#endif /* (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3)... */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int resolvepath(const char *, char *, size_t);
/* per RFC 3542; This is also defined in netdb.h */
extern int rexec_af(char **, unsigned short, const char *, const char *,
        const char *, int *, int);
#endif /* !defined(__XOPEN_OR_POSIX)|| defined(__EXTENSIONS__) */
extern int rmdir(const char *);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
/* per RFC 3542; This is also defined in netdb.h */
extern int rresvport_af(int *, int);
#endif

#if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
        defined(__EXTENSIONS__)
extern void *sbrk(intptr_t);
#endif /* !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__)
extern int setegid(gid_t);
extern int seteuid(uid_t);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */
extern int setgid(gid_t);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int setgroups(int, const gid_t *);
extern int sethostname(char *, int);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern int setpgid(pid_t, pid_t);
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern pid_t setpgrp(void);
extern int setregid(gid_t, gid_t);
extern int setreuid(uid_t, uid_t);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern pid_t setsid(void);
extern int setuid(uid_t);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void setusershell(void);
#endif /* !defined(__XOPEN_OR_POSIX)|| defined(__EXTENSIONS__) */
extern unsigned sleep(unsigned);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int stime(const time_t *);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if defined(_XPG4)
/* __EXTENSIONS__ makes the SVID Third Edition prototype in stdlib.h visible */
extern void swab(const void *_RESTRICT_KYWD, void *_RESTRICT_KYWD, ssize_t);
#endif /* defined(_XPG4) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int symlink(const char *, const char *);
extern void sync(void);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) */
#if defined(_XPG5) && !defined(_XPG6)
#ifdef __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname sysconf __sysconf_xpg5
#else /* __PRAGMA_REDEFINE_EXTNAME */
#define sysconf __sysconf_xpg5
#endif  /* __PRAGMA_REDEFINE_EXTNAME */
#endif /* defined(_XPG5) && !defined(_XPG6) */
extern long sysconf(int);
extern pid_t tcgetpgrp(int);
extern int tcsetpgrp(int, pid_t);
#if !defined(__XOPEN_OR_POSIX) || \
        (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
        defined(__EXTENSIONS__)
extern off_t tell(int);
#endif /* !defined(__XOPEN_OR_POSIX)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
        (defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
        defined(__EXTENSIONS__)
extern int truncate(const char *, off_t);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern char *ttyname(int);
#if (defined(_XPG4_2) && !defined(_XPG7)) || !defined(_STRICT_SYMBOLS)
extern useconds_t ualarm(useconds_t, useconds_t);
#endif
extern int unlink(const char *);
#if (defined(_XPG4_2) && !defined(_XPG7)) || !defined(_STRICT_SYMBOLS)
extern char *getwd(char *);
extern int usleep(useconds_t);
extern pid_t vfork(void) __RETURNS_TWICE;
#endif
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void vhangup(void);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern ssize_t write(int, const void *, size_t);
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void yield(void);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */

#if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
        defined(__EXTENSIONS__)
        /* || defined(_XPG7) */
extern int faccessat(int, const char *, int, int);
extern int fchownat(int, const char *, uid_t, gid_t, int);
extern int linkat(int, const char *, int, const char *, int);
extern ssize_t readlinkat(int, const char *_RESTRICT_KYWD,
        char *_RESTRICT_KYWD, size_t);
extern int renameat(int, const char *, int, const char *);
extern int symlinkat(const char *, int, const char *);
extern int unlinkat(int, const char *, int);
#endif  /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int get_nprocs(void);
extern int get_nprocs_conf(void);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */

/* transitional large file interface versions */
#if     defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
            !defined(__PRAGMA_REDEFINE_EXTNAME))
extern int ftruncate64(int, off64_t);
extern off64_t lseek64(int, off64_t, int);
extern ssize_t  pread64(int, void *, size_t, off64_t);
extern ssize_t  pwrite64(int, const void *, size_t, off64_t);
extern off64_t  tell64(int);
extern int      truncate64(const char *, off64_t);
extern int      lockf64(int, int, off64_t);
#endif  /* _LARGEFILE64_SOURCE */

/*
 * getlogin_r() & ttyname_r() prototypes are defined here.
 */

/*
 * Previous releases of Solaris, starting at 2.3, provided definitions of
 * various functions as specified in POSIX.1c, Draft 6.  For some of these
 * functions, the final POSIX 1003.1c standard had a different number of
 * arguments and return values.
 *
 * The following segment of this header provides support for the standard
 * interfaces while supporting applications written under earlier
 * releases.  The application defines appropriate values of the feature
 * test macros _POSIX_C_SOURCE and _POSIX_PTHREAD_SEMANTICS to indicate
 * whether it was written to expect the Draft 6 or standard versions of
 * these interfaces, before including this header.  This header then
 * provides a mapping from the source version of the interface to an
 * appropriate binary interface.  Such mappings permit an application
 * to be built from libraries and objects which have mixed expectations
 * of the definitions of these functions.
 *
 * For applications using the Draft 6 definitions, the binary symbol is the
 * same as the source symbol, and no explicit mapping is needed.  For the
 * standard interface, the function func() is mapped to the binary symbol
 * _posix_func().  The preferred mechanism for the remapping is a compiler
 * #pragma.  If the compiler does not provide such a #pragma, the header file
 * defines a static function func() which calls the _posix_func() version;
 * this has to be done instead of #define since POSIX specifies that an
 * application can #undef the symbol and still be bound to the correct
 * implementation.  Unfortunately, the statics confuse lint so we fallback to
 * #define in that case.
 *
 * NOTE: Support for the Draft 6 definitions is provided for compatibility
 * only.  New applications/libraries should use the standard definitions.
 */

#if     defined(__EXTENSIONS__) || defined(_REENTRANT) || \
        !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE - 0 >= 199506L) || \
        defined(_POSIX_PTHREAD_SEMANTICS)

#if     (_POSIX_C_SOURCE - 0 >= 199506L) || defined(_POSIX_PTHREAD_SEMANTICS)

#ifndef __USE_LEGACY_LOGNAME__
#ifdef  __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname getlogin_r __posix_getloginx_r
extern int getlogin_r(char *, int);
#else   /* __PRAGMA_REDEFINE_EXTNAME */
extern int __posix_getloginx_r(char *, int);
#define getlogin_r      __posix_getloginx_r
#endif  /* __PRAGMA_REDEFINE_EXTNAME */
#else   /* __USE_LEGACY_LOGNAME__ */
#ifdef __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname getlogin_r __posix_getlogin_r
extern int getlogin_r(char *, int);
#else  /* __PRAGMA_REDEFINE_EXTNAME */
extern int __posix_getlogin_r(char *, int);

#ifdef __lint

#define getlogin_r      __posix_getlogin_r

#else /* !__lint */

static int
getlogin_r(char *__name, int __len)
{
        return (__posix_getlogin_r(__name, __len));
}

#endif /* !__lint */
#endif /* __PRAGMA_REDEFINE_EXTNAME */
#endif  /* __USE_LEGACY_LOGNAME__ */

#ifdef __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname ttyname_r __posix_ttyname_r
extern int ttyname_r(int, char *, size_t);
#else  /* __PRAGMA_REDEFINE_EXTNAME */
extern int __posix_ttyname_r(int, char *, size_t);

#ifdef __lint

#define ttyname_r       __posix_ttyname_r

#else /* !__lint */

static int
ttyname_r(int __fildes, char *__buf, size_t __size)
{
        return (__posix_ttyname_r(__fildes, __buf, __size));
}

#endif /* !__lint */
#endif /* __PRAGMA_REDEFINE_EXTNAME */

#else  /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */

#ifndef __USE_LEGACY_LOGNAME__
#ifdef  __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname getlogin_r getloginx_r
#else   /* __PRAGMA_REDEFINE_EXTNAME */
extern char *getloginx_r(char *, int);
#define getlogin_r      getloginx_r
#endif  /* __PRAGMA_REDEFINE_EXTNAME */
#endif  /* __USE_LEGACY_LOGNAME__ */
extern char *getlogin_r(char *, int);

extern char *ttyname_r(int, char *, int);

#endif /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */

#endif /* defined(__EXTENSIONS__) || defined(_REENTRANT)... */

#if !defined(_STRICT_SYMBOLS)
extern int getentropy(void *, size_t);
#endif  /* !_STRICT_SYMBOLS */

#ifdef  __cplusplus
}
#endif

#endif /* _UNISTD_H */