kernel: Retire the P1003_1B and _KPOSIX_VERSION kernel options.
[dragonfly.git] / sys / sys / _posix.h
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1#ifndef _SYS__POSIX_H_
2#define _SYS__POSIX_H_
3
4/*-
5 * Copyright (c) 1998 HD Associates, Inc.
6 * All rights reserved.
7 * contact: dufault@hda.com
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD: src/sys/sys/_posix.h,v 1.6 1999/12/29 04:24:36 peter Exp $
2c292fb2 31 * $DragonFly: src/sys/sys/_posix.h,v 1.3 2008/11/20 11:27:24 hasso Exp $
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32 */
33
34/*
35 * This is a stand alone header file to set up for feature specification
36 * defined to take place before the inclusion of any standard header.
37 * It should only handle pre-processor defines.
38 *
39 * See section B.2.7 of 1003.1b-1993
40 *
41 */
42
43#ifdef _KERNEL
44
45#if !defined(KLD_MODULE)
46#include "opt_posix.h"
47#endif
48
49/* Only kern_mib.c uses _POSIX_VERSION. Introduce a kernel
50 * one to avoid other pieces of the kernel getting dependant
51 * on that.
52 * XXX Complain if you think this dumb.
53 */
54
55/* Make P1003 structures visible for the kernel if
56 * the P1003_1B option is in effect.
57 */
58#ifdef P1003_1B
59#define _P1003_1B_VISIBLE
60#ifndef _KPOSIX_VERSION
61#define _KPOSIX_VERSION 199309L
62#endif
63#endif
64
65#ifndef _KPOSIX_VERSION
66#define _KPOSIX_VERSION 199009L
67#endif
68
69#define _P1003_1B_VISIBLE_HISTORICALLY
70
71#else
72
73/* Default to existing user space version.
74 */
75#ifndef _POSIX_VERSION
0d5acd74 76#define _POSIX_VERSION 200809L
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77#endif
78
79/* Test for visibility of P1003.1B features:
80 * If _POSIX_SOURCE and POSIX_C_SOURCE are completely undefined
81 * they show up.
82 *
83 * If they specify a version including P1003.1B then they show up.
84 *
85 * (Two macros are added to permit hiding new extensions while
86 * keeping historic BSD features - that is not done now)
87 *
88 */
89
90#if (!defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)) || \
91 (_POSIX_VERSION >= 199309L && defined(_POSIX_C_SOURCE) && \
2c292fb2 92 (_POSIX_C_SOURCE - 0) >= 199309L)
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93#define _P1003_1B_VISIBLE
94#define _P1003_1B_VISIBLE_HISTORICALLY
95#endif
96
97#endif /* _KERNEL */
98#endif /* _SYS__POSIX_H_ */