1 | /* $NetBSD: unistd.h,v 1.61 2016/08/04 06:43:43 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1989, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. Neither the name of the University nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | * |
31 | * @(#)unistd.h 8.2 (Berkeley) 1/7/94 |
32 | */ |
33 | |
34 | #ifndef _SYS_UNISTD_H_ |
35 | #define _SYS_UNISTD_H_ |
36 | |
37 | #include <sys/featuretest.h> |
38 | |
39 | /* compile-time symbolic constants */ |
40 | #define _POSIX_JOB_CONTROL 1 |
41 | /* implementation supports job control */ |
42 | |
43 | /* |
44 | * According to POSIX 1003.1: |
45 | * "The saved set-user-ID capability allows a program to regain the |
46 | * effective user ID established at the last exec call." |
47 | * However, the setuid/setgid function as specified by POSIX 1003.1 does |
48 | * not allow changing the effective ID from the super-user without also |
49 | * changed the saved ID, so it is impossible to get super-user privileges |
50 | * back later. Instead we provide this feature independent of the current |
51 | * effective ID through the seteuid/setegid function. In addition, we do |
52 | * not use the saved ID as specified by POSIX 1003.1 in setuid/setgid, |
53 | * because this would make it impossible for a set-user-ID executable |
54 | * owned by a user other than the super-user to permanently revoke its |
55 | * extra privileges. |
56 | */ |
57 | #ifdef _NOT_AVAILABLE |
58 | #define _POSIX_SAVED_IDS 1 |
59 | /* saved set-user-ID and set-group-ID */ |
60 | #endif |
61 | |
62 | #define _POSIX_VERSION 200112L |
63 | #define _POSIX2_VERSION 200112L |
64 | |
65 | /* |
66 | * We support the posix_spawn() family of functions (unconditionally). |
67 | */ |
68 | #define _POSIX_SPAWN 200809L |
69 | |
70 | /* execution-time symbolic constants */ |
71 | |
72 | /* |
73 | * POSIX options and option groups we unconditionally do or don't |
74 | * implement. Those options which are implemented (or not) entirely |
75 | * in user mode are defined in <unistd.h>. Please keep this list in |
76 | * alphabetical order. |
77 | * |
78 | * Anything which is defined as zero below **must** have an |
79 | * implementation for the corresponding sysconf() which is able to |
80 | * determine conclusively whether or not the feature is supported. |
81 | * Anything which is defined as other than -1 below **must** have |
82 | * complete headers, types, and function declarations as specified by |
83 | * the POSIX standard; however, if the relevant sysconf() function |
84 | * returns -1, the functions may be stubbed out. |
85 | */ |
86 | /* Advisory information */ |
87 | #undef _POSIX_ADVISORY_INFO |
88 | /* asynchronous I/O is available */ |
89 | #define _POSIX_ASYNCHRONOUS_IO 200112L |
90 | /* barriers */ |
91 | #define _POSIX_BARRIERS 200112L |
92 | /* chown requires correct privileges */ |
93 | #define _POSIX_CHOWN_RESTRICTED 1 |
94 | /* clock selection */ |
95 | #define _POSIX_CLOCK_SELECTION -1 |
96 | /* cputime clock */ |
97 | #define _POSIX_CPUTIME 200112L |
98 | /* CPU type */ |
99 | #undef _POSIX_CPUTYPE |
100 | /* file synchronization is available */ |
101 | #define _POSIX_FSYNC 1 |
102 | /* support IPv6 */ |
103 | #define _POSIX_IPV6 0 |
104 | /* job control is available */ |
105 | #define _POSIX_JOB_CONTROL 1 |
106 | /* memory mapped files */ |
107 | #define _POSIX_MAPPED_FILES 1 |
108 | /* memory locking whole address space */ |
109 | #define _POSIX_MEMLOCK 1 |
110 | /* memory locking address ranges */ |
111 | #define _POSIX_MEMLOCK_RANGE 1 |
112 | /* memory access protections */ |
113 | #define _POSIX_MEMORY_PROTECTION 1 |
114 | /* message passing is available */ |
115 | #define _POSIX_MESSAGE_PASSING 200112L |
116 | /* monotonic clock */ |
117 | #define _POSIX_MONOTONIC_CLOCK 200112L |
118 | /* too-long path comp generate errors */ |
119 | #define _POSIX_NO_TRUNC 1 |
120 | /* prioritized I/O */ |
121 | #define _POSIX_PRIORITIZED_IO -1 |
122 | /* priority scheduling */ |
123 | #define _POSIX_PRIORITY_SCHEDULING 200112L |
124 | /* raw sockets */ |
125 | #define _POSIX_RAW_SOCKETS 200112L |
126 | /* read/write locks */ |
127 | #define _POSIX_READER_WRITER_LOCKS 200112L |
128 | /* realtime signals */ |
129 | #undef _POSIX_REALTIME_SIGNALS |
130 | /* regular expressions */ |
131 | #define _POSIX_REGEXP 1 |
132 | /* semaphores */ |
133 | #define _POSIX_SEMAPHORES 0 |
134 | /* shared memory objects */ |
135 | #define _POSIX_SHARED_MEMORY_OBJECTS 0 |
136 | /* shell */ |
137 | #define _POSIX_SHELL 1 |
138 | /* spin locks */ |
139 | #define _POSIX_SPIN_LOCKS 200112L |
140 | /* sporadic server */ |
141 | #undef _POSIX_SPORADIC_SERVER |
142 | /* synchronized I/O is available */ |
143 | #define _POSIX_SYNCHRONIZED_IO 1 |
144 | /* threads */ |
145 | #define _POSIX_THREADS 200112L |
146 | /* pthread_attr for stack size */ |
147 | #define _POSIX_THREAD_ATTR_STACKSIZE 200112L |
148 | /* pthread_attr for stack address */ |
149 | #define _POSIX_THREAD_ATTR_STACKADDR 200112L |
150 | /* thread cputime clock */ |
151 | #define _POSIX_THREAD_CPUTIME 200112L |
152 | /* _r functions */ |
153 | #define _POSIX_THREAD_PRIO_PROTECT 200112L |
154 | /* PTHREAD_PRIO_PROTECT */ |
155 | #define _POSIX_THREAD_SAFE_FUNCTIONS 200112L |
156 | /* timeouts */ |
157 | #undef _POSIX_TIMEOUTS |
158 | /* timers */ |
159 | #define _POSIX_TIMERS 200112L |
160 | /* typed memory objects */ |
161 | #undef _POSIX_TYPED_MEMORY_OBJECTS |
162 | /* may disable terminal spec chars */ |
163 | #define _POSIX_VDISABLE __CAST(unsigned char, '\377') |
164 | |
165 | /* C binding */ |
166 | #define _POSIX2_C_BIND 200112L |
167 | |
168 | /* XPG4.2 shared memory */ |
169 | #define _XOPEN_SHM 0 |
170 | |
171 | /* access function */ |
172 | #define F_OK 0 /* test for existence of file */ |
173 | #define X_OK 0x01 /* test for execute or search permission */ |
174 | #define W_OK 0x02 /* test for write permission */ |
175 | #define R_OK 0x04 /* test for read permission */ |
176 | |
177 | /* whence values for lseek(2) */ |
178 | #define SEEK_SET 0 /* set file offset to offset */ |
179 | #define SEEK_CUR 1 /* set file offset to current plus offset */ |
180 | #define SEEK_END 2 /* set file offset to EOF plus offset */ |
181 | |
182 | #if defined(_NETBSD_SOURCE) |
183 | /* whence values for lseek(2); renamed by POSIX 1003.1 */ |
184 | #define L_SET SEEK_SET |
185 | #define L_INCR SEEK_CUR |
186 | #define L_XTND SEEK_END |
187 | |
188 | /* |
189 | * fsync_range values. |
190 | * |
191 | * Note the following flag values were chosen to not overlap |
192 | * values for SEEK_XXX flags. While not currently implemented, |
193 | * it is possible to extend this call to respect SEEK_CUR and |
194 | * SEEK_END offset addressing modes. |
195 | */ |
196 | #define FDATASYNC 0x0010 /* sync data and minimal metadata */ |
197 | #define FFILESYNC 0x0020 /* sync data and metadata */ |
198 | #define FDISKSYNC 0x0040 /* flush disk caches after sync */ |
199 | #endif |
200 | |
201 | /* configurable pathname variables; use as argument to pathconf(3) */ |
202 | #define _PC_LINK_MAX 1 |
203 | #define _PC_MAX_CANON 2 |
204 | #define _PC_MAX_INPUT 3 |
205 | #define _PC_NAME_MAX 4 |
206 | #define _PC_PATH_MAX 5 |
207 | #define _PC_PIPE_BUF 6 |
208 | #define _PC_CHOWN_RESTRICTED 7 |
209 | #define _PC_NO_TRUNC 8 |
210 | #define _PC_VDISABLE 9 |
211 | #define _PC_SYNC_IO 10 |
212 | #define _PC_FILESIZEBITS 11 |
213 | #define _PC_SYMLINK_MAX 12 |
214 | #define _PC_2_SYMLINKS 13 |
215 | #define _PC_ACL_EXTENDED 14 |
216 | |
217 | /* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */ |
218 | #define _PC_MIN_HOLE_SIZE 15 |
219 | |
220 | /* configurable system variables; use as argument to sysconf(3) */ |
221 | /* |
222 | * XXX The value of _SC_CLK_TCK is embedded in <time.h>. |
223 | * XXX The value of _SC_PAGESIZE is embedded in <sys/shm.h>. |
224 | */ |
225 | #define _SC_ARG_MAX 1 |
226 | #define _SC_CHILD_MAX 2 |
227 | #define _O_SC_CLK_TCK 3 /* Old version, always 100 */ |
228 | #define _SC_NGROUPS_MAX 4 |
229 | #define _SC_OPEN_MAX 5 |
230 | #define _SC_JOB_CONTROL 6 |
231 | #define _SC_SAVED_IDS 7 |
232 | #define _SC_VERSION 8 |
233 | #define _SC_BC_BASE_MAX 9 |
234 | #define _SC_BC_DIM_MAX 10 |
235 | #define _SC_BC_SCALE_MAX 11 |
236 | #define _SC_BC_STRING_MAX 12 |
237 | #define _SC_COLL_WEIGHTS_MAX 13 |
238 | #define _SC_EXPR_NEST_MAX 14 |
239 | #define _SC_LINE_MAX 15 |
240 | #define _SC_RE_DUP_MAX 16 |
241 | #define _SC_2_VERSION 17 |
242 | #define _SC_2_C_BIND 18 |
243 | #define _SC_2_C_DEV 19 |
244 | #define _SC_2_CHAR_TERM 20 |
245 | #define _SC_2_FORT_DEV 21 |
246 | #define _SC_2_FORT_RUN 22 |
247 | #define _SC_2_LOCALEDEF 23 |
248 | #define _SC_2_SW_DEV 24 |
249 | #define _SC_2_UPE 25 |
250 | #define _SC_STREAM_MAX 26 |
251 | #define _SC_TZNAME_MAX 27 |
252 | #define _SC_PAGESIZE 28 |
253 | #define _SC_PAGE_SIZE _SC_PAGESIZE /* 1170 compatibility */ |
254 | #define _SC_FSYNC 29 |
255 | #define _SC_XOPEN_SHM 30 |
256 | #define _SC_SYNCHRONIZED_IO 31 |
257 | #define _SC_IOV_MAX 32 |
258 | #define _SC_MAPPED_FILES 33 |
259 | #define _SC_MEMLOCK 34 |
260 | #define _SC_MEMLOCK_RANGE 35 |
261 | #define _SC_MEMORY_PROTECTION 36 |
262 | #define _SC_LOGIN_NAME_MAX 37 |
263 | #define _SC_MONOTONIC_CLOCK 38 |
264 | #define _SC_CLK_TCK 39 /* New, variable version */ |
265 | #define _SC_ATEXIT_MAX 40 |
266 | #define _SC_THREADS 41 |
267 | #define _SC_SEMAPHORES 42 |
268 | #define _SC_BARRIERS 43 |
269 | #define _SC_TIMERS 44 |
270 | #define _SC_SPIN_LOCKS 45 |
271 | #define _SC_READER_WRITER_LOCKS 46 |
272 | #define _SC_GETGR_R_SIZE_MAX 47 |
273 | #define _SC_GETPW_R_SIZE_MAX 48 |
274 | #define _SC_CLOCK_SELECTION 49 |
275 | #define _SC_ASYNCHRONOUS_IO 50 |
276 | #define _SC_AIO_LISTIO_MAX 51 |
277 | #define _SC_AIO_MAX 52 |
278 | #define _SC_MESSAGE_PASSING 53 |
279 | #define _SC_MQ_OPEN_MAX 54 |
280 | #define _SC_MQ_PRIO_MAX 55 |
281 | #define _SC_PRIORITY_SCHEDULING 56 |
282 | #define _SC_THREAD_DESTRUCTOR_ITERATIONS 57 |
283 | #define _SC_THREAD_KEYS_MAX 58 |
284 | #define _SC_THREAD_STACK_MIN 59 |
285 | #define _SC_THREAD_THREADS_MAX 60 |
286 | #define _SC_THREAD_ATTR_STACKADDR 61 |
287 | #define _SC_THREAD_ATTR_STACKSIZE 62 |
288 | #define _SC_THREAD_PRIORITY_SCHEDULING 63 |
289 | #define _SC_THREAD_PRIO_INHERIT 64 |
290 | #define _SC_THREAD_PRIO_PROTECT 65 |
291 | #define _SC_THREAD_PROCESS_SHARED 66 |
292 | #define _SC_THREAD_SAFE_FUNCTIONS 67 |
293 | #define _SC_TTY_NAME_MAX 68 |
294 | #define _SC_HOST_NAME_MAX 69 |
295 | #define _SC_PASS_MAX 70 |
296 | #define _SC_REGEXP 71 |
297 | #define _SC_SHELL 72 |
298 | #define _SC_SYMLOOP_MAX 73 |
299 | |
300 | /* Actually, they are not supported or implemented yet */ |
301 | #define _SC_V6_ILP32_OFF32 74 |
302 | #define _SC_V6_ILP32_OFFBIG 75 |
303 | #define _SC_V6_LP64_OFF64 76 |
304 | #define _SC_V6_LPBIG_OFFBIG 77 |
305 | #define _SC_2_PBS 80 |
306 | #define _SC_2_PBS_ACCOUNTING 81 |
307 | #define _SC_2_PBS_CHECKPOINT 82 |
308 | #define _SC_2_PBS_LOCATE 83 |
309 | #define _SC_2_PBS_MESSAGE 84 |
310 | #define _SC_2_PBS_TRACK 85 |
311 | |
312 | /* These are implemented */ |
313 | #define _SC_SPAWN 86 |
314 | #define _SC_SHARED_MEMORY_OBJECTS 87 |
315 | |
316 | #define _SC_TIMER_MAX 88 |
317 | #define _SC_SEM_NSEMS_MAX 89 |
318 | #define _SC_CPUTIME 90 |
319 | #define _SC_THREAD_CPUTIME 91 |
320 | #define _SC_DELAYTIMER_MAX 92 |
321 | #define _SC_SIGQUEUE_MAX 93 |
322 | #define _SC_REALTIME_SIGNALS 94 |
323 | |
324 | /* Extensions found in Solaris and Linux. */ |
325 | #define _SC_PHYS_PAGES 121 |
326 | |
327 | #ifdef _NETBSD_SOURCE |
328 | /* Commonly provided sysconf() extensions */ |
329 | #define _SC_NPROCESSORS_CONF 1001 |
330 | #define _SC_NPROCESSORS_ONLN 1002 |
331 | /* Native variables */ |
332 | #define _SC_SCHED_RT_TS 2001 |
333 | #define _SC_SCHED_PRI_MIN 2002 |
334 | #define _SC_SCHED_PRI_MAX 2003 |
335 | #endif /* _NETBSD_SOURCE */ |
336 | |
337 | /* configurable system strings */ |
338 | #define _CS_PATH 1 |
339 | |
340 | #endif /* !_SYS_UNISTD_H_ */ |
341 | |