xref: /illumos-gate/usr/src/boot/sys/sys/unistd.h (revision 199767f8)
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  * $FreeBSD$
31  */
32 
33 #ifndef _SYS_UNISTD_H_
34 #define	_SYS_UNISTD_H_
35 
36 #include <sys/cdefs.h>
37 
38 /*
39  * POSIX options and option groups we unconditionally do or don't
40  * implement.  Those options which are implemented (or not) entirely
41  * in user mode are defined in <unistd.h>.  Please keep this list in
42  * alphabetical order.
43  *
44  * Anything which is defined as zero below **must** have an
45  * implementation for the corresponding sysconf() which is able to
46  * determine conclusively whether or not the feature is supported.
47  * Anything which is defined as other than -1 below **must** have
48  * complete headers, types, and function declarations as specified by
49  * the POSIX standard; however, if the relevant sysconf() function
50  * returns -1, the functions may be stubbed out.
51  */
52 #define	_POSIX_ADVISORY_INFO		200112L
53 #define	_POSIX_ASYNCHRONOUS_IO		0
54 #define	_POSIX_CHOWN_RESTRICTED		1
55 #define	_POSIX_CLOCK_SELECTION		(-1)
56 #define	_POSIX_CPUTIME			200112L
57 #define	_POSIX_FSYNC			200112L
58 #define	_POSIX_IPV6			0
59 #define	_POSIX_JOB_CONTROL		1
60 #define	_POSIX_MAPPED_FILES		200112L
61 #define	_POSIX_MEMLOCK			(-1)
62 #define	_POSIX_MEMLOCK_RANGE		200112L
63 #define	_POSIX_MEMORY_PROTECTION	200112L
64 #define	_POSIX_MESSAGE_PASSING		200112L
65 #define	_POSIX_MONOTONIC_CLOCK		200112L
66 #define	_POSIX_NO_TRUNC			1
67 #define	_POSIX_PRIORITIZED_IO		(-1)
68 #define	_POSIX_PRIORITY_SCHEDULING	200112L
69 #define	_POSIX_RAW_SOCKETS		200112L
70 #define	_POSIX_REALTIME_SIGNALS		200112L
71 #define	_POSIX_SEMAPHORES		200112L
72 #define	_POSIX_SHARED_MEMORY_OBJECTS	200112L
73 #define	_POSIX_SPORADIC_SERVER		(-1)
74 #define	_POSIX_SYNCHRONIZED_IO		(-1)
75 #define	_POSIX_TIMEOUTS			200112L
76 #define	_POSIX_TIMERS			200112L
77 #define	_POSIX_TYPED_MEMORY_OBJECTS	(-1)
78 #define	_POSIX_VDISABLE			0xff
79 
80 #if __XSI_VISIBLE
81 #define	_XOPEN_SHM			1
82 #define	_XOPEN_STREAMS			(-1)
83 #endif
84 
85 /*
86  * Although we have saved user/group IDs, we do not use them in setuid
87  * as described in POSIX 1003.1, because the feature does not work for
88  * root.  We use the saved IDs in seteuid/setegid, which are not currently
89  * part of the POSIX 1003.1 specification.  XXX revisit for 1003.1-2001
90  * as this is now mandatory.
91  */
92 #ifdef	_NOT_AVAILABLE
93 #define	_POSIX_SAVED_IDS	1 /* saved set-user-ID and set-group-ID */
94 #endif
95 
96 /* Define the POSIX.1 version we target for compliance. */
97 #define	_POSIX_VERSION		200112L
98 
99 /* access function */
100 #define	F_OK		0	/* test for existence of file */
101 #define	X_OK		0x01	/* test for execute or search permission */
102 #define	W_OK		0x02	/* test for write permission */
103 #define	R_OK		0x04	/* test for read permission */
104 
105 /* whence values for lseek(2) */
106 #ifndef SEEK_SET
107 #define	SEEK_SET	0	/* set file offset to offset */
108 #define	SEEK_CUR	1	/* set file offset to current plus offset */
109 #define	SEEK_END	2	/* set file offset to EOF plus offset */
110 #endif
111 #if __BSD_VISIBLE
112 #define	SEEK_DATA	3	/* set file offset to next data past offset */
113 #define	SEEK_HOLE	4	/* set file offset to next hole past offset */
114 #endif
115 
116 #ifndef _POSIX_SOURCE
117 /* whence values for lseek(2); renamed by POSIX 1003.1 */
118 #define	L_SET		SEEK_SET
119 #define	L_INCR		SEEK_CUR
120 #define	L_XTND		SEEK_END
121 #endif
122 
123 /* configurable pathname variables */
124 #define	_PC_LINK_MAX		 1
125 #define	_PC_MAX_CANON		 2
126 #define	_PC_MAX_INPUT		 3
127 #define	_PC_NAME_MAX		 4
128 #define	_PC_PATH_MAX		 5
129 #define	_PC_PIPE_BUF		 6
130 #define	_PC_CHOWN_RESTRICTED	 7
131 #define	_PC_NO_TRUNC		 8
132 #define	_PC_VDISABLE		 9
133 
134 #if __POSIX_VISIBLE >= 199309
135 #define	_PC_ASYNC_IO		53
136 #define	_PC_PRIO_IO		54
137 #define	_PC_SYNC_IO		55
138 #endif
139 
140 #if __POSIX_VISIBLE >= 200112
141 #define	_PC_ALLOC_SIZE_MIN	10
142 #define	_PC_FILESIZEBITS	12
143 #define	_PC_REC_INCR_XFER_SIZE	14
144 #define	_PC_REC_MAX_XFER_SIZE	15
145 #define	_PC_REC_MIN_XFER_SIZE	16
146 #define	_PC_REC_XFER_ALIGN	17
147 #define	_PC_SYMLINK_MAX		18
148 #endif
149 
150 #if __BSD_VISIBLE
151 #define	_PC_ACL_EXTENDED	59
152 #define	_PC_ACL_PATH_MAX	60
153 #define	_PC_CAP_PRESENT		61
154 #define	_PC_INF_PRESENT		62
155 #define	_PC_MAC_PRESENT		63
156 #define	_PC_ACL_NFS4		64
157 #endif
158 
159 /* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */
160 #define	_PC_MIN_HOLE_SIZE	21
161 
162 #if __BSD_VISIBLE
163 /*
164  * rfork() options.
165  *
166  * XXX currently, some operations without RFPROC set are not supported.
167  */
168 #define	RFNAMEG		(1<<0)	/* UNIMPL new plan9 `name space' */
169 #define	RFENVG		(1<<1)	/* UNIMPL copy plan9 `env space' */
170 #define	RFFDG		(1<<2)	/* copy fd table */
171 #define	RFNOTEG		(1<<3)	/* UNIMPL create new plan9 `note group' */
172 #define	RFPROC		(1<<4)	/* change child (else changes curproc) */
173 #define	RFMEM		(1<<5)	/* share `address space' */
174 #define	RFNOWAIT	(1<<6)	/* give child to init */
175 #define	RFCNAMEG	(1<<10)	/* UNIMPL zero plan9 `name space' */
176 #define	RFCENVG		(1<<11)	/* UNIMPL zero plan9 `env space' */
177 #define	RFCFDG		(1<<12)	/* close all fds, zero fd table */
178 #define	RFTHREAD	(1<<13)	/* enable kernel thread support */
179 #define	RFSIGSHARE	(1<<14)	/* share signal handlers */
180 #define	RFLINUXTHPN	(1<<16)	/* do linux clone exit parent notification */
181 #define	RFSTOPPED	(1<<17)	/* leave child in a stopped state */
182 #define	RFHIGHPID	(1<<18)	/* use a pid higher than 10 (idleproc) */
183 #define	RFTSIGZMB	(1<<19)	/* select signal for exit parent notification */
184 #define	RFTSIGSHIFT	20	/* selected signal number is in bits 20-27  */
185 #define	RFTSIGMASK	0xFF
186 #define	RFTSIGNUM(flags)	(((flags) >> RFTSIGSHIFT) & RFTSIGMASK)
187 #define	RFTSIGFLAGS(signum)	((signum) << RFTSIGSHIFT)
188 #define	RFPROCDESC	(1<<28)	/* return a process descriptor */
189 #define	RFPPWAIT	(1<<31)	/* parent sleeps until child exits (vfork) */
190 #define	RFFLAGS		(RFFDG | RFPROC | RFMEM | RFNOWAIT | RFCFDG | \
191     RFTHREAD | RFSIGSHARE | RFLINUXTHPN | RFSTOPPED | RFHIGHPID | RFTSIGZMB | \
192     RFPROCDESC | RFPPWAIT)
193 #define	RFKERNELONLY	(RFSTOPPED | RFHIGHPID | RFPPWAIT | RFPROCDESC)
194 
195 #endif /* __BSD_VISIBLE */
196 
197 #endif /* !_SYS_UNISTD_H_ */
198