FreeBSD/Linux Kernel Cross Reference
sys/sys/unistd.h
1 /*-
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)unistd.h 8.2 (Berkeley) 1/7/94
30 * $FreeBSD: src/sys/sys/unistd.h,v 1.50 2009/01/31 10:04:36 trhodes Exp $
31 * $DragonFly: src/sys/sys/unistd.h,v 1.10 2008/09/22 09:13:21 hasso Exp $
32 */
33
34 #ifndef _SYS_UNISTD_H_
35 #define _SYS_UNISTD_H_
36
37 #include <sys/cdefs.h>
38 #include <sys/types.h>
39
40 /*
41 * POSIX options and option groups we unconditionally do or don't
42 * implement. Those options which are implemented (or not) entirely
43 * in user mode are defined in <unistd.h>. Please keep this list in
44 * alphabetical order.
45 *
46 * Anything which is defined as zero below **must** have an
47 * implementation for the corresponding sysconf() which is able to
48 * determine conclusively whether or not the feature is supported.
49 * Anything which is defined as other than -1 below **must** have
50 * complete headers, types, and function declarations as specified by
51 * the POSIX standard; however, if the relevant sysconf() function
52 * returns -1, the functions may be stubbed out.
53 */
54 #define _POSIX_ADVISORY_INFO -1
55 #define _POSIX_ASYNCHRONOUS_IO 0
56 #define _POSIX_CHOWN_RESTRICTED 1
57 #define _POSIX_CLOCK_SELECTION -1
58 #define _POSIX_CPUTIME -1
59 #define _POSIX_FSYNC 200112L
60 #define _POSIX_IPV6 0
61 #define _POSIX_JOB_CONTROL 1
62 #define _POSIX_MAPPED_FILES 200112L
63 #define _POSIX_MEMLOCK -1
64 #define _POSIX_MEMLOCK_RANGE 200112L
65 #define _POSIX_MEMORY_PROTECTION 200112L
66 #define _POSIX_MESSAGE_PASSING -1
67 #define _POSIX_MONOTONIC_CLOCK 200112L
68 #define _POSIX_NO_TRUNC 1
69 #define _POSIX_PRIORITIZED_IO -1
70 #define _POSIX_PRIORITY_SCHEDULING 200112L
71 #define _POSIX_RAW_SOCKETS 200112L
72 #define _POSIX_REALTIME_SIGNALS 200112L
73 #define _POSIX_SEMAPHORES -1
74 #define _POSIX_SHARED_MEMORY_OBJECTS 200112L
75 #define _POSIX_SPORADIC_SERVER -1
76 #define _POSIX_SYNCHRONIZED_IO -1
77 #define _POSIX_TIMEOUTS 200112L
78 #define _POSIX_TIMERS 200112L
79 #define _POSIX_TYPED_MEMORY_OBJECTS -1
80 #define _POSIX_VDISABLE 0xff
81
82 #if __XSI_VISIBLE
83 #define _XOPEN_SHM 1
84 #define _XOPEN_STREAMS -1
85 #endif
86
87 /*
88 * Although we have saved user/group IDs, we do not use them in setuid
89 * as described in POSIX 1003.1, because the feature does not work for
90 * root. We use the saved IDs in seteuid/setegid, which are not currently
91 * part of the POSIX 1003.1 specification. XXX revisit for 1003.1-2001
92 * as this is now mandatory.
93 */
94 #ifdef _NOT_AVAILABLE
95 #define _POSIX_SAVED_IDS 1 /* saved set-user-ID and set-group-ID */
96 #endif
97
98 /* Define the POSIX.1 version we target for compliance. */
99 #ifndef _POSIX_VERSION
100 #define _POSIX_VERSION 200112L
101 #endif
102
103 /* access function */
104 #define F_OK 0 /* test for existence of file */
105 #define X_OK 0x01 /* test for execute or search permission */
106 #define W_OK 0x02 /* test for write permission */
107 #define R_OK 0x04 /* test for read permission */
108
109 /* whence values for lseek(2) */
110 #ifndef SEEK_SET
111 #define SEEK_SET 0 /* set file offset to offset */
112 #define SEEK_CUR 1 /* set file offset to current plus offset */
113 #define SEEK_END 2 /* set file offset to EOF plus offset */
114 #endif
115 #if __BSD_VISIBLE
116 #define SEEK_DATA 3 /* set file offset to next data past offset */
117 #define SEEK_HOLE 4 /* set file offset to next hole past offset */
118 #endif
119
120 #ifndef _POSIX_SOURCE
121 /* whence values for lseek(2); renamed by POSIX 1003.1 */
122 #define L_SET SEEK_SET
123 #define L_INCR SEEK_CUR
124 #define L_XTND SEEK_END
125 #endif
126
127 /* configurable pathname variables */
128 #define _PC_LINK_MAX 1
129 #define _PC_MAX_CANON 2
130 #define _PC_MAX_INPUT 3
131 #define _PC_NAME_MAX 4
132 #define _PC_PATH_MAX 5
133 #define _PC_PIPE_BUF 6
134 #define _PC_CHOWN_RESTRICTED 7
135 #define _PC_NO_TRUNC 8
136 #define _PC_VDISABLE 9
137
138 #if __POSIX_VISIBLE >= 199309
139 #define _PC_ASYNC_IO 53
140 #define _PC_PRIO_IO 54
141 #define _PC_SYNC_IO 55
142 #endif
143
144 #if __POSIX_VISIBLE >= 200112
145 #define _PC_ALLOC_SIZE_MIN 10
146 #define _PC_FILESIZEBITS 12
147 #define _PC_REC_INCR_XFER_SIZE 14
148 #define _PC_REC_MAX_XFER_SIZE 15
149 #define _PC_REC_MIN_XFER_SIZE 16
150 #define _PC_REC_XFER_ALIGN 17
151 #define _PC_SYMLINK_MAX 18
152 #endif
153
154 #if __BSD_VISIBLE
155 #define _PC_ACL_EXTENDED 59
156 #define _PC_ACL_PATH_MAX 60
157 #define _PC_CAP_PRESENT 61
158 #define _PC_INF_PRESENT 62
159 #define _PC_MAC_PRESENT 63
160 #endif
161
162 /* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */
163 #define _PC_MIN_HOLE_SIZE 21
164
165 #if __BSD_VISIBLE
166 /*
167 * rfork() options.
168 *
169 * XXX currently, operations without RFPROC set are not supported.
170 */
171 #define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */
172 #define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */
173 #define RFFDG (1<<2) /* copy fd table */
174 #define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */
175 #define RFPROC (1<<4) /* change child (else changes curproc) */
176 #define RFMEM (1<<5) /* share `address space' */
177 #define RFNOWAIT (1<<6) /* parent need not wait() on child */
178 #define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */
179 #define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */
180 #define RFCFDG (1<<12) /* zero fd table */
181 #define RFTHREAD (1<<13) /* enable kernel thread support */
182 #define RFSIGSHARE (1<<14) /* share signal handlers */
183 #define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */
184 #define RFPGLOCK (1<<30) /* process group interlock for signal race */
185 #define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */
186 #define RFKERNELONLY (RFPGLOCK | RFPPWAIT)
187
188 /*
189 * Extended exit extexit() operation modes.
190 */
191 /* Types of action to communicate exit */
192 #define EXTEXIT_SIMPLE 0
193 #define EXTEXIT_SETINT 1
194 #define EXTEXIT_ACTION(f) ((f) & 0xffff)
195 /* Types describing what to exit */
196 #define EXTEXIT_PROC (0<<16)
197 #define EXTEXIT_LWP (1<<16)
198 #define EXTEXIT_WHO(f) ((f) & (0xffff<<16))
199
200
201 /*
202 * Parameters for the creation of a new lwp.
203 */
204 struct lwp_params {
205 void (*func)(void *); /* Function to start execution */
206 void *arg; /* Parameter to this function */
207 void *stack; /* Stack address to use */
208 lwpid_t *tid1; /* Address to copy out new tid */
209 lwpid_t *tid2; /* Same */
210 };
211
212 #endif /* __BSD_VISIBLE */
213
214 #endif /* !_SYS_UNISTD_H_ */
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