xref: /illumos-gate/usr/src/head/unistd.h (revision 7c478bd9)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 (c) 1988 AT&T	*/
/*	  All Rights Reserved  	*/


/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _UNISTD_H
#define	_UNISTD_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <sys/feature_tests.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_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

#ifndef NULL
#if defined(_LP64)
#define	NULL	0L
#else
#define	NULL	0
#endif
#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 */

#if defined(__STDC__)

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);
#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 *);
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);
#if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
	defined(__EXTENSIONS__)
extern int fchownat(int, const char *, uid_t, gid_t, int);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
#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
extern char *getlogin(void);
#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__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern char *getwd(char *);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
/*
 * 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>.
 */
#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 *);
#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__)
extern int rename(const char *, const char *);
#endif /* (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
	defined(__EXTENSIONS__)
extern int renameat(int, const char *, int, const char *);
#endif /* !defined(__XOPEN_OR_POSIX || defined(_ATFILE_SOURCE)... */
#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 *);
#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(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern useconds_t ualarm(useconds_t, useconds_t);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern int unlink(const char *);
#if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
	defined(__EXTENSIONS__)
extern int unlinkat(int, const char *, int);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int usleep(useconds_t);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern pid_t vfork(void);
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#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__) */

/* 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 */

#else  /* __STDC__ */

extern int access();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int acct();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern unsigned alarm();
#if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
	defined(__EXTENSIONS__)
extern int brk();
#endif /* !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2)... */
extern int chdir();
extern int chown();
#if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
	defined(__EXTENSIONS__)
extern int chroot();
#endif /* (!defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)... */
extern int close();
#if defined(_XPG4) || defined(__EXTENSIONS__)
extern size_t confstr();
extern char *crypt();
#endif /* defined(XPG4) || defined(__EXTENSIONS__) */
#if !defined(_POSIX_C_SOURCE) || defined(_XPG3) || defined(__EXTENSIONS__)
extern char *ctermid();
#endif /* (!defined(_POSIX_C_SOURCE) || defined(_XPG3)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_REENTRANT) || defined(__EXTENSIONS_)
extern char *ctermid_r();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_REENTRANT) ... */
#if !defined(_XPG6) || defined(__EXTENSIONS__)
extern char *cuserid();
#endif
extern int dup();
extern int dup2();
#if defined(_XPG4) || defined(__EXTENSIONS__)
extern void encrypt();
#endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void endusershell();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern int execl();
extern int execle();
extern int execlp();
extern int execv();
extern int execve();
extern int execvp();
extern void _exit();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int fattach();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int fchdir();
extern int fchown();
#if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
	defined(__EXTENSIONS__)
extern int fchownat();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int fchroot();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || \
	defined(__EXTENSIONS__)
extern int fdatasync();
#endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
#if !defined(__XOPEN_OR_POSIX)
extern int fdetach();
#endif /* !defined(__XOPEN_OR_POSIX) */
extern pid_t fork();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern pid_t fork1();
extern pid_t forkall();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern long fpathconf();
#if !defined(_POSIX_C_SOURCE) || (_POSIX_C_SOURCE > 2) || \
	defined(__EXTENSIONS__)
extern int fsync();
#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();
#endif /* !defined(__XOPEN_OR_POSIX) (_POSIX_C_SOURCE > 2)... */
extern char *getcwd();
#if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
	defined(__EXTENSIONS__)
extern int getdtablesize();
#endif
extern gid_t getegid();
extern uid_t geteuid();
extern gid_t getgid();
extern int getgroups();
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern long gethostid();
#endif
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int gethostname();
#endif
extern char *getlogin();
#if defined(_XPG4) || defined(__EXTENSIONS__)
extern int  getopt();
extern char *optarg;
extern int  opterr, optind, optopt;
#if !defined(_XPG6) || defined(__EXTENSIONS__)
extern char *getpass();
#endif
#endif /* defined(_XPG4) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
#if !defined(_XPG6) || defined(__EXTENSIONS__)
extern int getpagesize();
#endif
extern pid_t getpgid();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern pid_t getpid();
extern pid_t getppid();
extern pid_t getpgrp();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
char *gettxt();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern pid_t getsid();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) */
extern uid_t getuid();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern char *getusershell();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern char *getwd();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int ioctl();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int isaexec();
extern int issetugid();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern int isatty();
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int lchown();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) */
extern int link();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern offset_t llseek();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
	defined(__EXTENSIONS__)
extern int lockf();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern off_t lseek();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int mincore();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
	defined(__EXTENSIONS__)
extern int nice();
#endif /* !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)... */
extern long pathconf();
extern int pause();
extern int pipe();
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG5) || \
	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
	defined(__EXTENSIONS__)
extern ssize_t pread();
#endif
#if !defined(_LP64) && \
	(!defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__))
extern void profil();
extern int ptrace();
#endif
#if !defined(__XOPEN_OR_POSIX) || \
	((_POSIX_C_SOURCE > 2) && !defined(_XPG6)) || \
	defined(__EXTENSIONS__)
extern int pthread_atfork();
#endif /* !defined(__XOPEN_OR_POSIX) || ((_POSIX_C_SOURCE > 2) ...  */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG5) || \
	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
	defined(__EXTENSIONS__)
extern ssize_t pwrite();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG5) */
extern ssize_t read();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
/* per RFC 3542; This is also defined in netdb.h */
extern int rcmd_af();
#endif
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern ssize_t readlink();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#if (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3) && !defined(_XPG4))) || \
	defined(__EXTENSIONS__)
extern int rename();
#if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
	defined(__EXTENSIONS__)
extern int renameat();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
#endif /* (!defined(__XOPEN_OR_POSIX) || (defined(_XPG3)... */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int resolvepath();
/* per RFC 3542; This is also defined in netdb.h */
extern int rexec_af();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern int rmdir();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
/* per RFC 3542; This is also defined in netdb.h */
extern int rresvport_af();
#endif
#if !defined(__XOPEN_OR_POSIX) || (defined(_XPG4_2) && !defined(_XPG6)) || \
	defined(__EXTENSIONS__)
extern void *sbrk();
#endif /* !defined(__XOPEN_OR_POSIX)|| (defined(_XPG4_2)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__)
extern int setegid();
extern int seteuid();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */
extern int setgid();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int setgroups();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern int setpgid();
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern pid_t setpgrp();
extern int setregid();
extern int setreuid();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern pid_t setsid();
extern int setuid();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void setusershell();
#endif /* !defined(__XOPEN_OR_POSIX)|| defined(__EXTENSIONS__) */
extern unsigned sleep();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern int stime();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
#if defined(_XPG4)
/* __EXTENSIONS__ makes the SVID Third Edition prototype in stdlib.h visible */
extern void swab();
#endif /* defined(_XPG4) */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int symlink();
extern void sync();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#if defined(_XPG5)
#ifdef __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname sysconf __sysconf_xpg5
extern long sysconf();
#else /* __PRAGMA_REDEFINE_EXTNAME */
extern long __sysconf_xpg5();
#define	sysconf __sysconf_xpg5
#endif  /* __PRAGMA_REDEFINE_EXTNAME */
#endif	/* defined(_XPG5) */
extern pid_t tcgetpgrp();
extern int tcsetpgrp();
#if !defined(__XOPEN_OR_POSIX) || \
	(defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS == 64) || \
	defined(__EXTENSIONS__)
extern off_t tell();
#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();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern char *ttyname();
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern useconds_t ualarm();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
extern int unlink();
#if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \
	defined(__EXTENSIONS__)
extern int unlinkat();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int usleep();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
extern pid_t vfork();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void vhangup();
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
extern ssize_t write();
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
extern void yield();
#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();
extern off64_t lseek64();
extern ssize_t pread64();
extern ssize_t pwrite64();
extern off64_t tell64();
extern int truncate64();
extern int lockf64();
#endif	/* _LARGEFILE64_SOURCE */

#endif /* __STDC__ */

/*
 * This atrocity is necessary on sparc because registers modified
 * by the child get propagated back to the parent via the window
 * save/restore mechanism.
 */
#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
#if defined(__sparc)
#pragma unknown_control_flow(vfork)
#endif
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */

/*
 * 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	defined(__STDC__)

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

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

extern int __posix_getlogin_r(char *, int);
extern int __posix_ttyname_r(int, char *, size_t);

#ifdef __lint

#define	getlogin_r	__posix_getlogin_r
#define	ttyname_r	__posix_ttyname_r

#else /* !__lint */

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

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

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

#else  /* __STDC__ */

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

#ifdef __PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname getlogin_r __posix_getlogin_r
#pragma redefine_extname ttyname_r __posix_ttyname_r
extern int getlogin_r();
extern int ttyname_r();
#else  /* __PRAGMA_REDEFINE_EXTNAME */

extern int __posix_getlogin_r();
extern int __posix_ttyname_r();

#ifdef	__lint

#define	getlogin_r	__posix_getlogin_r
#define	ttyname_r	__posix_ttyname_r

#else /* !__lint */

static int
getlogin_r(__name, __len)
	char *__name;
	int __len;
{
	return (__posix_getlogin_r(__name, __len));
}
static int
ttyname_r(__fildes, __buf, __size)
	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) || ... */

extern char *getlogin_r();
extern char *ttyname_r();

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

#endif /* __STDC__ */

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

#ifdef	__cplusplus
}
#endif

#endif /* _UNISTD_H */