1/* $OpenBSD: unistd.h,v 1.31 2015/07/20 00:56:10 guenther Exp $ */
2/* $NetBSD: unistd.h,v 1.10 1994/06/29 06:46:06 cgd Exp $ */
3
4/*
5 * Copyright (c) 1989, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)unistd.h 8.2 (Berkeley) 1/7/94
33 */
34
35#ifndef _SYS_UNISTD_H_
36#define _SYS_UNISTD_H_
37
38#include <sys/cdefs.h>
39
40#define _POSIX_VDISABLE (0377)
41#define _POSIX_ASYNC_IO (-1)
42#define _POSIX_PRIO_IO (-1)
43#define _POSIX_SYNC_IO (-1)
44
45/* Define the POSIX.1 version we target for compliance. */
46#define _POSIX_VERSION 200809L
47
48/* access function */
49#define F_OK 0 /* test for existence of file */
50#define X_OK 0x01 /* test for execute or search permission */
51#define W_OK 0x02 /* test for write permission */
52#define R_OK 0x04 /* test for read permission */
53
54/* whence values for lseek(2) */
55#define SEEK_SET 0 /* set file offset to offset */
56#define SEEK_CUR 1 /* set file offset to current plus offset */
57#define SEEK_END 2 /* set file offset to EOF plus offset */
58
59#if __BSD_VISIBLE
60/* old BSD whence values for lseek(2); renamed by POSIX 1003.1 */
61#define L_SET SEEK_SET
62#define L_INCR SEEK_CUR
63#define L_XTND SEEK_END
64
65/* the parameters argument passed to the __tfork() syscall */
66struct __tfork {
67 void *tf_tcb;
68 pid_t *tf_tid;
69 void *tf_stack;
70};
71
72/* the parameters argument for the kbind() syscall */
73struct __kbind {
74 void *kb_addr;
75 size_t kb_size;
76};
77#define KBIND_BLOCK_MAX 2 /* powerpc, sparc, and sparc64 need 2 blocks */
78#define KBIND_DATA_MAX 24 /* sparc64 needs 6, four-byte words */
79#endif
80
81/* the pathconf(2) variable values are part of the ABI */
82
83/* configurable pathname variables */
84#define _PC_LINK_MAX 1
85#define _PC_MAX_CANON 2
86#define _PC_MAX_INPUT 3
87#define _PC_NAME_MAX 4
88#define _PC_PATH_MAX 5
89#define _PC_PIPE_BUF 6
90#define _PC_CHOWN_RESTRICTED 7
91#define _PC_NO_TRUNC 8
92#define _PC_VDISABLE 9
93#define _PC_2_SYMLINKS 10
94#define _PC_ALLOC_SIZE_MIN 11
95#define _PC_ASYNC_IO 12
96#define _PC_FILESIZEBITS 13
97#define _PC_PRIO_IO 14
98#define _PC_REC_INCR_XFER_SIZE 15
99#define _PC_REC_MAX_XFER_SIZE 16
100#define _PC_REC_MIN_XFER_SIZE 17
101#define _PC_REC_XFER_ALIGN 18
102#define _PC_SYMLINK_MAX 19
103#define _PC_SYNC_IO 20
104#define _PC_TIMESTAMP_RESOLUTION 21
105
106#endif /* !_SYS_UNISTD_H_ */