/
unistd.h
214 lines (194 loc) · 7.56 KB
/
unistd.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1989, 1993
* 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. 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.
*/
#ifndef _SYS_UNISTD_H_
#define _SYS_UNISTD_H_
#include <sys/cdefs.h>
/*
* POSIX options and option groups we unconditionally do or don't
* implement. Those options which are implemented (or not) entirely
* in user mode are defined in <unistd.h>. Please keep this list in
* alphabetical order.
*
* Anything which is defined as zero below **must** have an
* implementation for the corresponding sysconf() which is able to
* determine conclusively whether or not the feature is supported.
* Anything which is defined as other than -1 below **must** have
* complete headers, types, and function declarations as specified by
* the POSIX standard; however, if the relevant sysconf() function
* returns -1, the functions may be stubbed out.
*/
#define _POSIX_ADVISORY_INFO 200112L
#define _POSIX_ASYNCHRONOUS_IO 200112L
#define _POSIX_CHOWN_RESTRICTED 1
#define _POSIX_CLOCK_SELECTION (-1)
#define _POSIX_CPUTIME 200112L
#define _POSIX_FSYNC 200112L
#define _POSIX_IPV6 0
#define _POSIX_JOB_CONTROL 1
#define _POSIX_MAPPED_FILES 200112L
#define _POSIX_MEMLOCK (-1)
#define _POSIX_MEMLOCK_RANGE 200112L
#define _POSIX_MEMORY_PROTECTION 200112L
#define _POSIX_MESSAGE_PASSING 200112L
#define _POSIX_MONOTONIC_CLOCK 200112L
#define _POSIX_NO_TRUNC 1
#define _POSIX_PRIORITIZED_IO (-1)
#define _POSIX_PRIORITY_SCHEDULING 0
#define _POSIX_RAW_SOCKETS 200112L
#define _POSIX_REALTIME_SIGNALS 200112L
#define _POSIX_SEMAPHORES 200112L
#define _POSIX_SHARED_MEMORY_OBJECTS 200112L
#define _POSIX_SPORADIC_SERVER (-1)
#define _POSIX_SYNCHRONIZED_IO (-1)
#define _POSIX_TIMEOUTS 200112L
#define _POSIX_TIMERS 200112L
#define _POSIX_TYPED_MEMORY_OBJECTS (-1)
#define _POSIX_VDISABLE 0xff
#if __XSI_VISIBLE
#define _XOPEN_SHM 1
#define _XOPEN_STREAMS (-1)
#endif
/*
* Although we have saved user/group IDs, we do not use them in setuid
* as described in POSIX 1003.1, because the feature does not work for
* root. We use the saved IDs in seteuid/setegid, which are not currently
* part of the POSIX 1003.1 specification. XXX revisit for 1003.1-2001
* as this is now mandatory.
*/
#ifdef _NOT_AVAILABLE
#define _POSIX_SAVED_IDS 1 /* saved set-user-ID and set-group-ID */
#endif
/* Define the POSIX.1 version we target for compliance. */
#define _POSIX_VERSION 200112L
/* 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) */
#ifndef SEEK_SET
#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 */
#endif
#if __BSD_VISIBLE
#define SEEK_DATA 3 /* set file offset to next data past offset */
#define SEEK_HOLE 4 /* set file offset to next hole past offset */
#endif
#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
#if __POSIX_VISIBLE >= 199309
#define _PC_ASYNC_IO 53
#define _PC_PRIO_IO 54
#define _PC_SYNC_IO 55
#endif
#if __POSIX_VISIBLE >= 200112
#define _PC_ALLOC_SIZE_MIN 10
#define _PC_FILESIZEBITS 12
#define _PC_REC_INCR_XFER_SIZE 14
#define _PC_REC_MAX_XFER_SIZE 15
#define _PC_REC_MIN_XFER_SIZE 16
#define _PC_REC_XFER_ALIGN 17
#define _PC_SYMLINK_MAX 18
#endif
#if __BSD_VISIBLE
#define _PC_ACL_EXTENDED 59
#define _PC_ACL_PATH_MAX 60
#define _PC_CAP_PRESENT 61
#define _PC_INF_PRESENT 62
#define _PC_MAC_PRESENT 63
#define _PC_ACL_NFS4 64
#define _PC_DEALLOC_PRESENT 65
#endif
/* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */
#define _PC_MIN_HOLE_SIZE 21
#if __BSD_VISIBLE
/*
* rfork() options.
*
* XXX currently, some operations without RFPROC set are not supported.
*/
#define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */
#define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */
#define RFFDG (1<<2) /* copy fd table */
#define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */
#define RFPROC (1<<4) /* change child (else changes curproc) */
#define RFMEM (1<<5) /* share `address space' */
#define RFNOWAIT (1<<6) /* give child to init */
#define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */
#define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */
#define RFCFDG (1<<12) /* close all fds, zero fd table */
#define RFTHREAD (1<<13) /* enable kernel thread support */
#define RFSIGSHARE (1<<14) /* share signal handlers */
#define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */
#define RFSTOPPED (1<<17) /* leave child in a stopped state */
#define RFHIGHPID (1<<18) /* use a pid higher than 10 (idleproc) */
#define RFTSIGZMB (1<<19) /* select signal for exit parent notification */
#define RFTSIGSHIFT 20 /* selected signal number is in bits 20-27 */
#define RFTSIGMASK 0xFF
#define RFTSIGNUM(flags) (((flags) >> RFTSIGSHIFT) & RFTSIGMASK)
#define RFTSIGFLAGS(signum) ((signum) << RFTSIGSHIFT)
#define RFPROCDESC (1<<28) /* return a process descriptor */
/* kernel: parent sleeps until child exits (vfork) */
#define RFPPWAIT (1<<31)
/* user: vfork(2) semantics, clear signals */
#define RFSPAWN (1U<<31)
#define RFFLAGS (RFFDG | RFPROC | RFMEM | RFNOWAIT | RFCFDG | \
RFTHREAD | RFSIGSHARE | RFLINUXTHPN | RFSTOPPED | RFHIGHPID | RFTSIGZMB | \
RFPROCDESC | RFSPAWN | RFPPWAIT)
#define RFKERNELONLY (RFSTOPPED | RFHIGHPID | RFPROCDESC)
/* kcmp() options. */
#define KCMP_FILE 100
#define KCMP_FILEOBJ 101
#define KCMP_FILES 102
#define KCMP_SIGHAND 103
#define KCMP_VM 104
#define SWAPOFF_FORCE 0x00000001
/*
* close_range() options.
*/
#define CLOSE_RANGE_CLOEXEC (1<<2)
#endif /* __BSD_VISIBLE */
#endif /* !_SYS_UNISTD_H_ */