Source to sys/unistd.h


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/*
 * Copyright (c) 1989 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.
 *
 *	from: @(#)unistd.h	5.14 (Berkeley) 4/1/91
 *	unistd.h,v 1.3 1993/05/20 16:23:41 cgd Exp
 */

#ifndef _SYS_UNISTD_H_
#define _SYS_UNISTD_H_

/* compile-time symbolic constants */
#define	_POSIX_JOB_CONTROL	/* implementation supports job control */
#ifdef _NOTYET
#define	_POSIX_SAVED_IDS	/* saved set-user-ID and set-group-ID */
#endif
#define	_POSIX_VERSION		198808L

/* execution-time symbolic constants */
#define	_POSIX_CHOWN_RESTRICTED	/* chown requires appropriate privileges */
#define	_POSIX_NO_TRUNC		/* too-long path components generate errors */
				/* may disable terminal special characters */
#define	_POSIX_VDISABLE	((unsigned char)'\377')

/* access function */
#define	F_OK		0	/* test for existence of file */
#define	X_OK		0x01	/* test for execute or search permission */
#define	W_OK		0x02	/* test for write permission */
#define	R_OK		0x04	/* test for read permission */

/* whence values for lseek(2) */
#define	SEEK_SET	0	/* set file offset to offset */
#define	SEEK_CUR	1	/* set file offset to current plus offset */
#define	SEEK_END	2	/* set file offset to EOF plus offset */

#ifndef _POSIX_SOURCE
/* whence values for lseek(2); renamed by POSIX 1003.1 */
#define	L_SET		SEEK_SET
#define	L_INCR		SEEK_CUR
#define	L_XTND		SEEK_END
#endif

/* configurable pathname variables */
#define	_PC_LINK_MAX		1
#define	_PC_MAX_CANON		2
#define	_PC_MAX_INPUT		3
#define	_PC_NAME_MAX		4
#define	_PC_PATH_MAX		5
#define	_PC_PIPE_BUF		6
#define	_PC_CHOWN_RESTRICTED	7
#define	_PC_NO_TRUNC		8
#define	_PC_VDISABLE		9

/* configurable system variables */
#define	_SC_ARG_MAX		1
#define	_SC_CHILD_MAX		2
#define	_SC_CLK_TCK		3
#define	_SC_NGROUPS_MAX		4
#define	_SC_OPEN_MAX		5
#define	_SC_JOB_CONTROL		6
#define	_SC_SAVED_IDS		7
#define	_SC_VERSION		8

#endif /* !_SYS_UNISTD_H_ */