2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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 $
33 #ifndef _SYS_UNISTD_H_
34 #define _SYS_UNISTD_H_
36 #include <sys/cdefs.h>
37 #include <sys/types.h>
40 * POSIX options and option groups we unconditionally do or don't
41 * implement. Those options which are implemented (or not) entirely
42 * in user mode are defined in <unistd.h>. Please keep this list in
45 * Anything which is defined as zero below **must** have an
46 * implementation for the corresponding sysconf() which is able to
47 * determine conclusively whether or not the feature is supported.
48 * Anything which is defined as other than -1 below **must** have
49 * complete headers, types, and function declarations as specified by
50 * the POSIX standard; however, if the relevant sysconf() function
51 * returns -1, the functions may be stubbed out.
53 #define _POSIX_ADVISORY_INFO -1
54 #define _POSIX_ASYNCHRONOUS_IO 0
55 #define _POSIX_BARRIERS 200112L
56 #define _POSIX_CHOWN_RESTRICTED 1
57 #define _POSIX_CLOCK_SELECTION -1
58 #define _POSIX_CPUTIME -1
59 #define _POSIX_FSYNC 200112L
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 200112L
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 200112L
74 #define _POSIX_SHARED_MEMORY_OBJECTS 200112L
75 #define _POSIX_SPIN_LOCKS 200112L
76 #define _POSIX_SPORADIC_SERVER -1
77 #define _POSIX_SYNCHRONIZED_IO -1
78 #define _POSIX_TIMEOUTS 200112L
79 #define _POSIX_TIMERS 200112L
80 #define _POSIX_TYPED_MEMORY_OBJECTS -1
81 #define _POSIX_VDISABLE 0xff
85 #define _XOPEN_STREAMS -1
89 * Although we have saved user/group IDs, we do not use them in setuid
90 * as described in POSIX 1003.1, because the feature does not work for
91 * root. We use the saved IDs in seteuid/setegid, which are not currently
92 * part of the POSIX 1003.1 specification. XXX revisit for 1003.1-2001
93 * as this is now mandatory.
96 #define _POSIX_SAVED_IDS 1 /* saved set-user-ID and set-group-ID */
99 /* Define the POSIX.1 version we target for compliance. */
100 #ifndef _POSIX_VERSION
101 #define _POSIX_VERSION 200112L
104 /* access function */
105 #define F_OK 0 /* test for existence of file */
106 #define X_OK 0x01 /* test for execute or search permission */
107 #define W_OK 0x02 /* test for write permission */
108 #define R_OK 0x04 /* test for read permission */
110 /* whence values for lseek(2) */
112 #define SEEK_SET 0 /* set file offset to offset */
113 #define SEEK_CUR 1 /* set file offset to current plus offset */
114 #define SEEK_END 2 /* set file offset to EOF plus offset */
117 #define SEEK_DATA 3 /* set file offset to next data past offset */
118 #define SEEK_HOLE 4 /* set file offset to next hole past offset */
120 /* whence values for lseek(2); renamed by POSIX 1003.1 */
121 #define L_SET SEEK_SET
122 #define L_INCR SEEK_CUR
123 #define L_XTND SEEK_END
126 /* configurable pathname variables */
127 #define _PC_LINK_MAX 1
128 #define _PC_MAX_CANON 2
129 #define _PC_MAX_INPUT 3
130 #define _PC_NAME_MAX 4
131 #define _PC_PATH_MAX 5
132 #define _PC_PIPE_BUF 6
133 #define _PC_CHOWN_RESTRICTED 7
134 #define _PC_NO_TRUNC 8
135 #define _PC_VDISABLE 9
137 #if __POSIX_VISIBLE >= 199309
138 #define _PC_ASYNC_IO 53
139 #define _PC_PRIO_IO 54
140 #define _PC_SYNC_IO 55
143 #if __POSIX_VISIBLE >= 200112
144 #define _PC_ALLOC_SIZE_MIN 10
145 #define _PC_FILESIZEBITS 12
146 #define _PC_REC_INCR_XFER_SIZE 14
147 #define _PC_REC_MAX_XFER_SIZE 15
148 #define _PC_REC_MIN_XFER_SIZE 16
149 #define _PC_REC_XFER_ALIGN 17
150 #define _PC_SYMLINK_MAX 18
154 #define _PC_ACL_EXTENDED 59
155 #define _PC_ACL_PATH_MAX 60
156 #define _PC_CAP_PRESENT 61
157 #define _PC_INF_PRESENT 62
158 #define _PC_MAC_PRESENT 63
161 /* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */
162 #define _PC_MIN_HOLE_SIZE 21
168 * XXX currently, operations without RFPROC set are not supported.
170 #define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */
171 #define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */
172 #define RFFDG (1<<2) /* copy fd table */
173 #define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */
174 #define RFPROC (1<<4) /* change child (else changes curproc) */
175 #define RFMEM (1<<5) /* share `address space' */
176 #define RFNOWAIT (1<<6) /* parent need not wait() on child */
177 #define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */
178 #define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */
179 #define RFCFDG (1<<12) /* zero fd table */
180 #define RFTHREAD (1<<13) /* enable kernel thread support */
181 #define RFSIGSHARE (1<<14) /* share signal handlers */
182 #define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */
183 #define RFPGLOCK (1<<30) /* process group interlock for signal race */
184 #define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */
185 #define RFKERNELONLY (RFPGLOCK | RFPPWAIT)
188 * Extended exit extexit() operation modes.
190 /* Types of action to communicate exit */
191 #define EXTEXIT_SIMPLE 0
192 #define EXTEXIT_SETINT 1
193 #define EXTEXIT_ACTION(f) ((f) & 0xffff)
194 /* Types describing what to exit */
195 #define EXTEXIT_PROC (0<<16)
196 #define EXTEXIT_LWP (1<<16)
197 #define EXTEXIT_WHO(f) ((f) & (0xffff<<16))
201 * Parameters for the creation of a new lwp.
204 void (*lwp_func)(void *); /* Function to start execution */
205 void *lwp_arg; /* Parameter to this function */
206 void *lwp_stack; /* Stack address to use */
207 lwpid_t *lwp_tid1; /* Address to copy out new tid */
208 lwpid_t *lwp_tid2; /* Same */
211 #endif /* __BSD_VISIBLE */
213 #endif /* !_SYS_UNISTD_H_ */