/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)unistd.h	5.14 (Berkeley) 04/01/91
 */

#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_ */