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Imported from ../bash-2.05.tar.gz.
[thirdparty/bash.git] / examples / loadables / getconf.c
CommitLineData
ccc6cda3 1/*
cce855bc
JA		 2 * ORIGINAL COPYRIGHT STATEMENT:
3 *
ccc6cda3
JA		 4 * Copyright (c) 1994 Winning Strategies, Inc.
5 * 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. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Winning Strategies, Inc.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/*
34 * POSIX.2 getconf utility
35 *
cce855bc 36 * Originally Written by:
ccc6cda3 37 * J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
cce855bc
JA		 38 *
39 * Heavily modified for inclusion in bash by
40 * Chet Ramey <chet@po.cwru.edu>
ccc6cda3
JA		 41 */
42
ccc6cda3
JA		 43#include <stdio.h>
44#include <limits.h>
45#include <locale.h>
46#include <unistd.h>
47#include <errno.h>
48#include "bashansi.h"
49#include "shell.h"
50#include "builtins.h"
51#include "stdc.h"
cce855bc
JA		 52#include "common.h"
53#include "bashgetopt.h"
ccc6cda3
JA		 54
55struct conf_variable
56{
57 const char *name;
28ef6c31 58 enum { SYSCONF, CONFSTR, PATHCONF, CONSTANT, G_UNDEF } type;
ccc6cda3
JA		 59 long value;
60};
61
cce855bc 62/* Some systems do not define these; use POSIX.2 minimum recommended values. */
ccc6cda3 63#ifndef _POSIX2_COLL_WEIGHTS_MAX
cce855bc 64# define _POSIX2_COLL_WEIGHTS_MAX 2
ccc6cda3
JA		 65#endif
66
67static const struct conf_variable conf_table[] =
68{
cce855bc 69 /* POSIX.2 Configurable Variable Values */
ccc6cda3 70 { "PATH", CONFSTR, _CS_PATH },
cce855bc
JA		 71 { "CS_PATH", CONFSTR, _CS_PATH },
72
73 /* POSIX.1 Configurable Variable Values (only Solaris?) */
74#if defined (_CS_LFS_CFLAGS)
75 { "LFS_CFLAGS", CONFSTR, _CS_LFS_CFLAGS },
76 { "LFS_LDFLAGS", CONFSTR, _CS_LFS_LDFLAGS },
77 { "LFS_LIBS", CONFSTR, _CS_LFS_LIBS },
78 { "LFS_LINTFLAGS", CONFSTR, _CS_LFS_LINTFLAGS },
79#endif
80#if defined (_CS_LFS64_CFLAGS)
81 { "LFS64_CFLAGS", CONFSTR, _CS_LFS64_CFLAGS },
82 { "LFS64_LDFLAGS", CONFSTR, _CS_LFS64_LDFLAGS },
83 { "LFS64_LIBS", CONFSTR, _CS_LFS64_LIBS },
84 { "LFS64_LINTFLAGS", CONFSTR, _CS_LFS64_LINTFLAGS },
85#endif
ccc6cda3 86
cce855bc
JA		 87 /* Single UNIX Specification version 2 Configurable Variable Values */
88#if defined (_CS_XBS5_ILP32_OFF32_CFLAGS)
89 { "XBS5_ILP32_OFF32_CFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_CFLAGS },
90 { "XBS5_ILP32_OFF32_LDFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_LDFLAGS },
91 { "XBS5_ILP32_OFF32_LIBS", CONFSTR, _CS_XBS5_ILP32_OFF32_LIBS },
92 { "XBS5_ILP32_OFF32_LINTFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_LINTFLAGS },
93 { "XBS5_ILP32_OFFBIG_CFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_CFLAGS },
94 { "XBS5_ILP32_OFFBIG_LDFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LDFLAGS },
95 { "XBS5_ILP32_OFFBIG_LIBS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LIBS },
96 { "XBS5_ILP32_OFFBIG_LINTFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LINTFLAGS },
97 { "XBS5_LP64_OFF64_CFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_CFLAGS },
98 { "XBS5_LP64_OFF64_LDFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_LDFLAGS },
99 { "XBS5_LP64_OFF64_LIBS", CONFSTR, _CS_XBS5_LP64_OFF64_LIBS },
100 { "XBS5_LP64_OFF64_LINTFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_LINTFLAGS },
101 { "XBS5_LPBIG_OFFBIG_CFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_CFLAGS },
102 { "XBS5_LPBIG_OFFBIG_LDFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LDFLAGS },
103 { "XBS5_LPBIG_OFFBIG_LIBS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LIBS },
104 { "XBS5_LPBIG_OFFBIG_LINTFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS },
105#endif /* _CS_XBS5_ILP32_OFF32_CFLAGS */
106
107 /* POSIX.2 Utility Limit Minimum Values */
28ef6c31 108#ifdef _POSIX2_BC_BASE_MAX
ccc6cda3 109 { "POSIX2_BC_BASE_MAX", CONSTANT, _POSIX2_BC_BASE_MAX },
28ef6c31
JA		 110#else
111 { "POSIX2_BC_BASE_MAX", G_UNDEF, -1 },
112#endif
113#ifdef _POSIX2_BC_DIM_MAX
ccc6cda3 114 { "POSIX2_BC_DIM_MAX", CONSTANT, _POSIX2_BC_DIM_MAX },
28ef6c31
JA		 115#else
116 { "POSIX2_BC_DIM_MAX", G_UNDEF, -1 },
117#endif
118#ifdef _POSIX2_BC_SCALE_MAX
ccc6cda3 119 { "POSIX2_BC_SCALE_MAX", CONSTANT, _POSIX2_BC_SCALE_MAX },
28ef6c31
JA		 120#else
121 { "POSIX2_BC_SCALE_MAX", G_UNDEF, -1 },
122#endif
123#ifdef _POSIX2_BC_STRING_MAX
ccc6cda3 124 { "POSIX2_BC_STRING_MAX", CONSTANT, _POSIX2_BC_STRING_MAX },
28ef6c31
JA		 125#else
126 { "POSIX2_BC_STRING_MAX", G_UNDEF, -1 },
127#endif
128#ifdef _POSIX2_COLL_WEIGHTS_MAX
ccc6cda3 129 { "POSIX2_COLL_WEIGHTS_MAX", CONSTANT, _POSIX2_COLL_WEIGHTS_MAX },
28ef6c31
JA		 130#else
131 { "POSIX2_COLL_WEIGHTS_MAX", G_UNDEF, -1 },
132#endif
cce855bc
JA		 133#if defined (_POSIX2_EQUIV_CLASS_MAX)
134 { "POSIX2_EQUIV_CLASS_MAX", CONSTANT, _POSIX2_EQUIV_CLASS_MAX },
135#endif
28ef6c31 136#ifdef _POSIX2_EXPR_NEST_MAX
ccc6cda3 137 { "POSIX2_EXPR_NEST_MAX", CONSTANT, _POSIX2_EXPR_NEST_MAX },
28ef6c31
JA		 138#else
139 { "POSIX2_EXPR_NEST_MAX", G_UNDEF, -1 },
140#endif
141#ifdef _POSIX2_LINE_MAX
ccc6cda3 142 { "POSIX2_LINE_MAX", CONSTANT, _POSIX2_LINE_MAX },
28ef6c31
JA		 143#else
144 { "POSIX2_LINE_MAX", G_UNDEF, -1 },
145#endif
146#ifdef _POSIX2_RE_DUP_MAX
ccc6cda3 147 { "POSIX2_RE_DUP_MAX", CONSTANT, _POSIX2_RE_DUP_MAX },
28ef6c31
JA		 148#else
149 { "POSIX2_RE_DUP_MAX", G_UNDEF, -1 },
150#endif
cce855bc 151#if defined (_POSIX2_VERSION)
ccc6cda3 152 { "POSIX2_VERSION", CONSTANT, _POSIX2_VERSION },
28ef6c31
JA		 153#else
154# if !defined (_SC_2_VERSION)
155 { "POSIX2_VERSION", G_UNDEF, -1 },
156# endif
cce855bc 157#endif
ccc6cda3
JA		 158
159 /* POSIX.1 Minimum Values */
160 { "_POSIX_ARG_MAX", CONSTANT, _POSIX_ARG_MAX },
161 { "_POSIX_CHILD_MAX", CONSTANT, _POSIX_CHILD_MAX },
162 { "_POSIX_LINK_MAX", CONSTANT, _POSIX_LINK_MAX },
163 { "_POSIX_MAX_CANON", CONSTANT, _POSIX_MAX_CANON },
164 { "_POSIX_MAX_INPUT", CONSTANT, _POSIX_MAX_INPUT },
165 { "_POSIX_NAME_MAX", CONSTANT, _POSIX_NAME_MAX },
166 { "_POSIX_NGROUPS_MAX", CONSTANT, _POSIX_NGROUPS_MAX },
167 { "_POSIX_OPEN_MAX", CONSTANT, _POSIX_OPEN_MAX },
168 { "_POSIX_PATH_MAX", CONSTANT, _POSIX_PIPE_BUF },
169 { "_POSIX_PIPE_BUF", CONSTANT, _POSIX_PIPE_BUF },
170 { "_POSIX_SSIZE_MAX", CONSTANT, _POSIX_SSIZE_MAX },
171 { "_POSIX_STREAM_MAX", CONSTANT, _POSIX_STREAM_MAX },
172 { "_POSIX_TZNAME_MAX", CONSTANT, _POSIX_TZNAME_MAX },
173
cce855bc 174 /* POSIX.2 Symbolic Utility Limits */
ccc6cda3
JA		 175 { "BC_BASE_MAX", SYSCONF, _SC_BC_BASE_MAX },
176 { "BC_DIM_MAX", SYSCONF, _SC_BC_DIM_MAX },
177 { "BC_SCALE_MAX", SYSCONF, _SC_BC_SCALE_MAX },
178 { "BC_STRING_MAX", SYSCONF, _SC_BC_STRING_MAX },
179 { "COLL_WEIGHTS_MAX", SYSCONF, _SC_COLL_WEIGHTS_MAX },
180 { "EXPR_NEST_MAX", SYSCONF, _SC_EXPR_NEST_MAX },
181 { "LINE_MAX", SYSCONF, _SC_LINE_MAX },
182 { "RE_DUP_MAX", SYSCONF, _SC_RE_DUP_MAX },
183
cce855bc 184 /* POSIX.2 Optional Facility Configuration Values */
28ef6c31 185#ifdef _SC_2_C_BIND
ccc6cda3 186 { "POSIX2_C_BIND", SYSCONF, _SC_2_C_BIND },
28ef6c31
JA		 187#else
188 { "POSIX2_C_BIND", G_UNDEF, -1 },
189#endif
190#ifdef _SC_2_C_DEV
ccc6cda3 191 { "POSIX2_C_DEV", SYSCONF, _SC_2_C_DEV },
28ef6c31
JA		 192#else
193 { "POSIX2_C_DEV", G_UNDEF, -1 },
194#endif
cce855bc
JA		 195#if defined (_SC_2_C_VERSION)
196 { "POSIX2_C_VERSION", SYSCONF, _SC_2_C_VERSION },
28ef6c31
JA		 197#else
198 { "POSIX2_C_VERSION", G_UNDEF, -1 },
cce855bc
JA		 199#endif
200#if defined (_SC_2_CHAR_TERM)
ccc6cda3 201 { "POSIX2_CHAR_TERM", SYSCONF, _SC_2_CHAR_TERM },
28ef6c31
JA		 202#else
203 { "POSIX2_CHAR_TERM", G_UNDEF, -1 },
cce855bc 204#endif
28ef6c31 205#ifdef _SC_2_FORT_DEV
ccc6cda3 206 { "POSIX2_FORT_DEV", SYSCONF, _SC_2_FORT_DEV },
28ef6c31
JA		 207#else
208 { "POSIX2_FORT_DEV", G_UNDEF, -1 },
209#endif
210#ifdef _SC_2_FORT_RUN
ccc6cda3 211 { "POSIX2_FORT_RUN", SYSCONF, _SC_2_FORT_RUN },
28ef6c31
JA		 212#else
213 { "POSIX2_FORT_RUN", G_UNDEF, -1 },
214#endif
215#ifdef _SC_2_LOCALEDEF
ccc6cda3 216 { "POSIX2_LOCALEDEF", SYSCONF, _SC_2_LOCALEDEF },
28ef6c31
JA		 217#else
218 { "POSIX2_LOCALEDEF", G_UNDEF, -1 },
219#endif
220#ifdef _SC_2_SW_DEV
ccc6cda3 221 { "POSIX2_SW_DEV", SYSCONF, _SC_2_SW_DEV },
28ef6c31
JA		 222#else
223 { "POSIX2_SW_DEV", G_UNDEF, -1 },
224#endif
cce855bc 225#if defined (_SC2_UPE)
ccc6cda3 226 { "POSIX2_UPE", SYSCONF, _SC_2_UPE },
28ef6c31
JA		 227#else
228 { "POSIX2_UPE", G_UNDEF, -1 },
cce855bc
JA		 229#endif
230#if !defined (_POSIX2_VERSION) && defined (_SC_2_VERSION)
231 { "POSIX2_VERSION" SYSCONF, _SC_2_VERSION },
232#endif
ccc6cda3
JA		 233
234 /* POSIX.1 Configurable System Variables */
235 { "ARG_MAX", SYSCONF, _SC_ARG_MAX },
236 { "CHILD_MAX", SYSCONF, _SC_CHILD_MAX },
237 { "CLK_TCK", SYSCONF, _SC_CLK_TCK },
238 { "NGROUPS_MAX", SYSCONF, _SC_NGROUPS_MAX },
239 { "OPEN_MAX", SYSCONF, _SC_OPEN_MAX },
240 { "STREAM_MAX", SYSCONF, _SC_STREAM_MAX },
241 { "TZNAME_MAX", SYSCONF, _SC_TZNAME_MAX },
242 { "_POSIX_JOB_CONTROL", SYSCONF, _SC_JOB_CONTROL },
243 { "_POSIX_SAVED_IDS", SYSCONF, _SC_SAVED_IDS },
244 { "_POSIX_VERSION", SYSCONF, _SC_VERSION },
245
cce855bc
JA		 246 /* POSIX.1 Optional Facility Configuration Values */
247#if defined (_SC_ASYNCHRONOUS_IO)
248 { "_POSIX_ASYNCHRONOUS_IO", SYSCONF, _SC_ASYNCHRONOUS_IO },
249#endif
250#if defined (_SC_FSYNC)
251 { "_POSIX_FSYNC", SYSCONF, _SC_FSYNC },
252#endif
253#if defined (_SC_MAPPED_FILES)
254 { "_POSIX_MAPPED_FILES", SYSCONF, _SC_MAPPED_FILES },
255#endif
256#if defined (_SC_MEMLOCK)
257 { "_POSIX_MEMLOCK", SYSCONF, _SC_MEMLOCK },
258#endif
259#if defined (_SC_MEMLOCK_RANGE)
260 { "_POSIX_MEMLOCK_RANGE", SYSCONF, _SC_MEMLOCK_RANGE },
261#endif
262#if defined (_SC_MEMORY_PROTECTION)
263 { "_POSIX_MEMORY_PROTECTION", SYSCONF, _SC_MEMORY_PROTECTION },
264#endif
265#if defined (_SC_MESSAGE_PASSING)
266 { "_POSIX_MESSAGE_PASSING", SYSCONF, _SC_MESSAGE_PASSING },
267#endif
268#if defined (SC_PRIORITIZED_IO)
269 { "_POSIX_PRIORITIZED_IO", SYSCONF, _SC_PRIORITIZED_IO },
270#endif
271#if defined (_SC_PRIORITY_SCHEDULING)
272 { "_POSIX_PRIORITY_SCHEDULING", SYSCONF, _SC_PRIORITY_SCHEDULING },
273#endif
274#if defined (_SC_REALTIME_SIGNALS)
275 { "_POSIX_REALTIME_SIGNALS", SYSCONF, _SC_REALTIME_SIGNALS },
276#endif
277#if defined (_SC_SEMAPHORES)
278 { "_POSIX_SEMAPHORES", SYSCONF, _SC_SEMAPHORES },
279#endif
280#if defined (_SC_SHARED_MEMORY_OBJECTS)
281 { "_POSIX_SHARED_MEMORY_OBJECTS", SYSCONF, _SC_SHARED_MEMORY_OBJECTS },
282#endif
283#if defined (_SC_SYNCHRONIZED_IO)
284 { "_POSIX_SYNCHRONIZED_IO", SYSCONF, _SC_SYNCHRONIZED_IO },
285#endif
286#if defined (_SC_TIMERS)
287 { "_POSIX_TIMERS", SYSCONF, _SC_TIMERS },
288#endif
289#if defined (_SC_THREADS)
290 { "_POSIX_THREADS", SYSCONF, _SC_THREADS },
bb70624e
JA		 291#endif
292#if defined (_SC_THREADS)
cce855bc 293 { "_POSIX_THREAD_ATTR_STACKADDR", SYSCONF, _SC_THREAD_ATTR_STACKADDR },
bb70624e
JA		 294#endif
295#if defined (_SC_THREAD_ATTR_STACKSIZE)
cce855bc 296 { "_POSIX_THREAD_ATTR_STACKSIZE", SYSCONF, _SC_THREAD_ATTR_STACKSIZE },
bb70624e
JA		 297#endif
298#if defined (_SC_THREAD_PRIORITY_SCHEDULING)
cce855bc 299 { "_POSIX_THREAD_PRIORITY_SCHEDULING", SYSCONF, _SC_THREAD_PRIORITY_SCHEDULING },
bb70624e
JA		 300#endif
301#if defined (_SC_THREAD_PRIO_INHERIT)
cce855bc 302 { "_POSIX_THREAD_PRIO_INHERIT", SYSCONF, _SC_THREAD_PRIO_INHERIT },
bb70624e
JA		 303#endif
304#if defined (_SC_THREAD_PRIO_PROTECT)
cce855bc 305 { "_POSIX_THREAD_PRIO_PROTECT", SYSCONF, _SC_THREAD_PRIO_PROTECT },
bb70624e
JA		 306#endif
307#if defined (_SC_THREAD_PROCESS_SHARED)
cce855bc 308 { "_POSIX_THREAD_PROCESS_SHARED", SYSCONF, _SC_THREAD_PROCESS_SHARED },
bb70624e
JA		 309#endif
310#if defined (_SC_THREAD_SAFE_FUNCTIONS)
cce855bc 311 { "_POSIX_THREAD_SAFE_FUNCTIONS", SYSCONF, _SC_THREAD_SAFE_FUNCTIONS },
bb70624e 312#endif
cce855bc
JA		 313
314 /* XPG 4.2 Configurable System Variables. */
315#if defined (_SC_ATEXIT_MAX)
316 { "ATEXIT_MAX", SYSCONF, _SC_ATEXIT_MAX },
317#endif
318#if defined (_SC_IOV_MAX)
319 { "IOV_MAX", SYSCONF, _SC_IOV_MAX },
320#endif
321#if defined (_SC_PAGESIZE)
322 { "PAGESIZE", SYSCONF, _SC_PAGESIZE },
323#endif
324#if defined (_SC_PAGE_SIZE)
325 { "PAGE_SIZE", SYSCONF, _SC_PAGE_SIZE },
326#endif
327
328#if defined (_SC_AIO_LISTIO_MAX)
329 { "AIO_LISTIO_MAX", SYSCONF, _SC_AIO_LISTIO_MAX },
bb70624e
JA		 330#endif
331#if defined (_SC_AIO_MAX)
cce855bc 332 { "AIO_MAX", SYSCONF, _SC_AIO_MAX },
bb70624e
JA		 333#endif
334#if defined (_SC_AIO_PRIO_DELTA_MAX)
cce855bc 335 { "AIO_PRIO_DELTA_MAX", SYSCONF, _SC_AIO_PRIO_DELTA_MAX },
bb70624e
JA		 336#endif
337#if defined (_SC_DELAYTIMER_MAX)
cce855bc 338 { "DELAYTIMER_MAX", SYSCONF, _SC_DELAYTIMER_MAX },
bb70624e 339#endif
cce855bc
JA		 340#if defined (_SC_GETGR_R_SIZE_MAX)
341 { "GETGR_R_SIZE_MAX", SYSCONF, _SC_GETGR_R_SIZE_MAX },
342#endif
343#if defined (_SC_GETPW_R_SIZE_MAX)
344 { "GETPW_R_SIZE_MAX", SYSCONF, _SC_GETPW_R_SIZE_MAX },
345#endif
bb70624e 346#if defined (_SC_MQ_OPEN_MAX)
cce855bc 347 { "MQ_OPEN_MAX", SYSCONF, _SC_MQ_OPEN_MAX },
bb70624e
JA		 348#endif
349#if defined (_SC_MQ_PRIO_MAX)
cce855bc 350 { "MQ_PRIO_MAX", SYSCONF, _SC_MQ_PRIO_MAX },
bb70624e
JA		 351#endif
352#if defined (_SC_RTSIG_MAX)
cce855bc 353 { "RTSIG_MAX", SYSCONF, _SC_RTSIG_MAX },
bb70624e
JA		 354#endif
355#if defined (_SC_SEM_NSEMS_MAX)
cce855bc 356 { "SEM_NSEMS_MAX", SYSCONF, _SC_SEM_NSEMS_MAX },
bb70624e
JA		 357#endif
358#if defined (_SC_SEM_VALUE_MAX)
cce855bc 359 { "SEM_VALUE_MAX", SYSCONF, _SC_SEM_VALUE_MAX },
bb70624e
JA		 360#endif
361#if defined (_SC_SIGQUEUE_MAX)
cce855bc 362 { "SIGQUEUE_MAX", SYSCONF, _SC_SIGQUEUE_MAX },
bb70624e
JA		 363#endif
364#if defined (_SC_TIMER_MAX)
cce855bc 365 { "TIMER_MAX", SYSCONF, _SC_TIMER_MAX },
bb70624e
JA		 366#endif
367
cce855bc
JA		 368#if defined (_SC_LOGIN_NAME_MAX)
369 { "LOGIN_NAME_MAX", SYSCONF, _SC_LOGIN_NAME_MAX },
370#endif
371#if defined (_SC_LOGNAME_MAX)
372 { "LOGNAME_MAX", SYSCONF, _SC_LOGNAME_MAX },
373#endif
374#if defined (_SC_TTY_NAME_MAX)
375 { "TTY_NAME_MAX", SYSCONF, _SC_TTY_NAME_MAX },
376#endif
377
bb70624e 378#if defined (_SC_THREAD_DESTRUCTOR_ITERATIONS)
cce855bc 379 { "PTHREAD_DESTRUCTOR_ITERATIONS", SYSCONF, _SC_THREAD_DESTRUCTOR_ITERATIONS },
bb70624e
JA		 380#endif
381#if defined (_SC_THREAD_KEYS_MAX)
cce855bc 382 { "PTHREAD_KEYS_MAX", SYSCONF, _SC_THREAD_KEYS_MAX },
bb70624e
JA		 383#endif
384#if defined (_SC_THREAD_STACK_MIN)
cce855bc 385 { "PTHREAD_STACK_MIN", SYSCONF, _SC_THREAD_STACK_MIN },
bb70624e
JA		 386#endif
387#if defined (_SC_THREAD_THREADS_MAX)
cce855bc 388 { "PTHREAD_THREADS_MAX", SYSCONF, _SC_THREAD_THREADS_MAX },
bb70624e 389#endif
cce855bc
JA		 390
391 /* XPG 4.2 Optional Facility Configuration Values */
392#if defined (_SC_XOPEN_UNIX)
393 { "_XOPEN_UNIX", SYSCONF, _SC_XOPEN_UNIX },
394 { "_XOPEN_CRYPT", SYSCONF, _SC_XOPEN_CRYPT },
395 { "_XOPEN_ENH_I18N", SYSCONF, _SC_XOPEN_ENH_I18N },
396 { "_XOPEN_SHM", SYSCONF, _SC_XOPEN_SHM },
397 { "_XOPEN_VERSION", SYSCONF, _SC_XOPEN_VERSION },
398# if defined (_SC_XOPEN_XCU_VERSION)
399 { "_XOPEN_XCU_VERSION", SYSCONF, _SC_XOPEN_XCU_VERSION },
400# endif
401#endif
402#if defined (_SC_XOPEN_REALTIME)
403 { "_XOPEN_REALTIME", SYSCONF, _SC_XOPEN_REALTIME },
404 { "_XOPEN_REALTIME_THREADS", SYSCONF, _SC_XOPEN_REALTIME_THREADS },
405#endif
406#if defined (_SC_XOPEN_LEGACY)
407 { "_XOPEN_LEGACY", SYSCONF, _SC_XOPEN_LEGACY },
408#endif /* _SC_XOPEN_LEGACY */
409
410 /* Single UNIX Specification version 2 Optional Facility Configuration Values */
411#if defined (_SC_XBS5_ILP32_OFF32)
412 { "_XBS5_ILP32_OFF32", SYSCONF, _SC_XBS5_ILP32_OFF32 },
413 { "_XBS5_ILP32_OFFBIG", SYSCONF, _SC_XBS5_ILP32_OFFBIG },
414 { "_XBS5_LP64_OFF64", SYSCONF, _SC_XBS5_LP64_OFF64 },
415 { "_XBS5_LPBIG_OFFBIG", SYSCONF, _SC_XBS5_LPBIG_OFFBIG },
416#endif /* _SC_XBS5_ILP32_OFF32 */
417
418 /* POSIX.1 Configurable Pathname Values */
ccc6cda3
JA		 419 { "LINK_MAX", PATHCONF, _PC_LINK_MAX },
420 { "MAX_CANON", PATHCONF, _PC_MAX_CANON },
421 { "MAX_INPUT", PATHCONF, _PC_MAX_INPUT },
422 { "NAME_MAX", PATHCONF, _PC_NAME_MAX },
423 { "PATH_MAX", PATHCONF, _PC_PATH_MAX },
424 { "PIPE_BUF", PATHCONF, _PC_PIPE_BUF },
425 { "_POSIX_CHOWN_RESTRICTED", PATHCONF, _PC_CHOWN_RESTRICTED },
426 { "_POSIX_NO_TRUNC", PATHCONF, _PC_NO_TRUNC },
427 { "_POSIX_VDISABLE", PATHCONF, _PC_VDISABLE },
428
cce855bc
JA		 429 /* XPG 4.2 Configurable Pathname Values */
430#if defined (_PC_FILESIZEBITS)
431 { "FILESIZEBITS", PATHCONF, _PC_FILESIZEBITS },
432#endif
433#if defined (_PC_ASYNC_IO)
434 { "_POSIX_ASYNC_IO", PATHCONF, _PC_ASYNC_IO },
435#endif
436#if defined (_PC_PRIO_IO)
437 { "_POSIX_PRIO_IO", PATHCONF, _PC_PRIO_IO },
438#endif
439#if defined (_PC_SYNC_IO)
440 { "_POSIX_SYNC_IO", PATHCONF, _PC_SYNC_IO },
441#endif
442
ccc6cda3
JA		 443 { NULL }
444};
445
cce855bc
JA		 446static int num_getconf_variables = sizeof(conf_table) / sizeof(struct conf_variable) - 1;
447
ccc6cda3
JA		 448extern char *this_command_name;
449extern char *xmalloc ();
450extern char **make_builtin_argv ();
cce855bc
JA		 451
452static void getconf_help ();
453static int getconf_print ();
454static int getconf_one ();
455static int getconf_all ();
ccc6cda3
JA		 456
457int
458getconf_builtin (list)
459 WORD_LIST *list;
460{
cce855bc 461 int c, r, opt, aflag;
ccc6cda3 462 char **v;
ccc6cda3 463
cce855bc
JA		 464 aflag = 0;
465 reset_internal_getopt();
466 while ((opt = internal_getopt (list, "ah")) != -1) {
467 switch (opt) {
468 case 'a':
469 aflag = 1;
470 break;
471 case 'h':
472 getconf_help();
473 return(EXECUTION_SUCCESS);
474 default:
475 builtin_usage();
476 return(EX_USAGE);
477 }
478 }
479
480 list = loptend;
481 if ((aflag == 0 && list == 0) || (aflag && list) || list_length(list) > 2) {
482 builtin_usage();
483 return(EX_USAGE);
484 }
485
486 r = aflag ? getconf_all() : getconf_one(list);
ccc6cda3
JA		 487
488 return r;
489}
490
cce855bc
JA		 491static void
492getconf_help()
ccc6cda3 493{
ccc6cda3 494 const struct conf_variable *cp;
cce855bc 495 register int i, column;
ccc6cda3 496
cce855bc
JA		 497 builtin_usage();
498 printf("Acceptable variable names are:\n");
ccc6cda3 499 for (cp = conf_table; cp->name != NULL; cp++) {
cce855bc
JA		 500 if (cp->type == PATHCONF)
501 printf("%s pathname\n", cp->name);
502 else
503 printf("%s\n", cp->name);
ccc6cda3 504 }
cce855bc 505}
ccc6cda3 506
cce855bc
JA		 507static int
508getconf_print(cp, vpath, all)
509struct conf_variable *cp;
510char *vpath;
511int all;
512{
513 long val;
514 char *sval;
515 size_t slen;
ccc6cda3
JA		 516
517 switch (cp->type) {
28ef6c31
JA		 518 case G_UNDEF:
519 printf("undefined\n");
520 break;
521
ccc6cda3
JA		 522 case CONSTANT:
523 printf("%ld\n", cp->value);
524 break;
525
526 case CONFSTR:
cce855bc 527 errno = 0;
ccc6cda3 528 slen = confstr (cp->value, (char *) 0, (size_t) 0);
cce855bc
JA		 529 if (slen == 0) {
530 if (errno != 0) {
531 if (all)
532 printf ("getconf: %s\n", strerror(errno));
533 else
534 builtin_error ("%s", strerror(errno));
535 } else
536 printf ("undefined\n");
537 return (EXECUTION_FAILURE);
538 }
ccc6cda3
JA		 539 sval = xmalloc(slen);
540
541 confstr(cp->value, sval, slen);
542 printf("%s\n", sval);
cce855bc 543 free(sval);
ccc6cda3
JA		 544 break;
545
546 case SYSCONF:
547 errno = 0;
548 if ((val = sysconf(cp->value)) == -1) {
549 if (errno != 0) {
cce855bc
JA		 550 if (all)
551 printf("getconf: %s\n", strerror (errno));
552 else
553 builtin_error ("%s", strerror (errno));
ccc6cda3
JA		 554 return (EXECUTION_FAILURE);
555 }
556
557 printf ("undefined\n");
558 } else {
559 printf("%ld\n", val);
560 }
561 break;
562
563 case PATHCONF:
564 errno = 0;
cce855bc 565 if ((val = pathconf(vpath, cp->value)) == -1) {
ccc6cda3 566 if (errno != 0) {
cce855bc
JA		 567 if (all)
568 printf("getconf: %s: %s\n", vpath, strerror (errno));
569 else
570 builtin_error ("%s: %s", vpath, strerror (errno));
ccc6cda3
JA		 571 return (EXECUTION_FAILURE);
572 }
573
574 printf ("undefined\n");
575 } else {
576 printf ("%ld\n", val);
577 }
578 break;
579 }
580
28ef6c31
JA		 581 return ((ferror(stdout) || cp->type == G_UNDEF) ? EXECUTION_FAILURE
582 : EXECUTION_SUCCESS);
ccc6cda3
JA		 583}
584
cce855bc
JA		 585static int
586getconf_all()
587{
588 const struct conf_variable *cp;
589 int ret;
590
591 ret = EXECUTION_SUCCESS;
592 for (cp = conf_table; cp->name != NULL; cp++) {
593 printf("%-35s", cp->name);
594 if (getconf_print(cp, ".", 1) == EXECUTION_FAILURE)
595 ret = EXECUTION_FAILURE;
596 }
597 return ret;
598}
599
600static int
601getconf_one(list)
602 WORD_LIST *list;
603{
604 const struct conf_variable *cp;
605 char *vname, *vpath;
606
607 vname = list->word->word;
608 vpath = (list->next && list->next->word) ? list->next->word->word
609 : (char *)NULL;
610
611 for (cp = conf_table; cp->name != NULL; cp++) {
612 if (strcmp(vname, cp->name) == 0)
613 break;
614 }
615 if (cp->name == NULL) {
616 builtin_error ("%s: unknown variable", vname);
617 return (EXECUTION_FAILURE);
618 }
619
620 if (cp->type == PATHCONF) {
621 if (list->next == 0) {
622 builtin_usage();
623 return(EX_USAGE);
624 }
625 } else {
626 if (list->next) {
627 builtin_usage();
628 return(EX_USAGE);
629 }
630 }
631
632 return (getconf_print(cp, vpath, 0));
633}
634
ccc6cda3
JA		 635static char *getconf_doc[] = {
636 "getconf writes the current value of a configurable system limit or",
637 "option variable to the standard output.",
638 (char *)NULL
639};
640
641struct builtin getconf_struct = {
642 "getconf",
643 getconf_builtin,
644 BUILTIN_ENABLED,
645 getconf_doc,
cce855bc 646 "getconf -a or getconf -h or getconf sysvar or getconf pathvar pathname",
ccc6cda3
JA		 647 0
648};
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