2.11BSD/include/unistd.h

/*-
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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	8.10.4 (2.11BSD) 1999/5/25
 */

/*
 * Modified for 2.11BSD by removing prototypes.  To save time and space
 * functions not returning 'int' and functions not present in the system
 * are not listed.
*/

#ifndef _UNISTD_H_
#define	_UNISTD_H_

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

#define	 STDIN_FILENO	0	/* standard input file descriptor */
#define	STDOUT_FILENO	1	/* standard output file descriptor */
#define	STDERR_FILENO	2	/* standard error file descriptor */

#ifndef NULL
#define	NULL		0	/* null pointer constant */
#endif

void	 _exit();
int	 access();
unsigned int	 alarm();
pid_t	 fork();
gid_t	 getegid();
uid_t	 geteuid();
gid_t	 getgid();
char	*getlogin();
pid_t	 getpgrp();
pid_t	 getpid();
pid_t	 getppid();
uid_t	 getuid();
off_t	 lseek();
ssize_t	 read();
unsigned int	 sleep();
char	*ttyname();
ssize_t	 write();

char	*brk();
char	*crypt();
void	 endusershell();
long	 gethostid();
char	*getpass();
char	*getusershell();
char	*getwd();
char	*mktemp();
void	 psignal();
extern	char 	*sys_siglist[];
char	*re_comp();
char	*sbrk();
int	 sethostid();
void	 setusershell();
void	 sync();
unsigned int	 ualarm();
void	 usleep();
pid_t	 vfork();

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

#endif /* !_UNISTD_H_ */