1 /* Copyright (C) 1991-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
25 #include <sys/param.h>
26 #include <sys/sysinfo.h>
29 /* Get the value of the system variable NAME. */
41 return MAX (__tzname_max (), _POSIX_TZNAME_MAX);
43 case _SC_CHARCLASS_NAME_MAX:
44 #ifdef CHARCLASS_NAME_MAX
45 return CHARCLASS_NAME_MAX;
50 case _SC_COLL_WEIGHTS_MAX:
51 #ifdef COLL_WEIGHTS_MAX
52 return COLL_WEIGHTS_MAX;
57 case _SC_EQUIV_CLASS_MAX:
58 #ifdef EQUIV_CLASS_MAX
59 return EQUIV_CLASS_MAX;
65 #ifdef _POSIX2_LOCALEDEF
66 return _POSIX2_LOCALEDEF;
71 case _SC_NPROCESSORS_CONF:
72 return __get_nprocs_conf ();
74 case _SC_NPROCESSORS_ONLN:
75 return __get_nprocs ();
78 return __get_phys_pages ();
80 case _SC_AVPHYS_PAGES:
81 return __get_avphys_pages ();
84 /* We have no limit since we use lists. */
88 /* We have no limit but since the return value might be used to
89 allocate a buffer we restrict the value. */
108 return sizeof (long int) * CHAR_BIT;
111 return sizeof (int) * CHAR_BIT;
120 return _POSIX_SSIZE_MAX;
146 case _SC_GETGR_R_SIZE_MAX:
147 return NSS_BUFLEN_GROUP;
149 case _SC_GETPW_R_SIZE_MAX:
150 return NSS_BUFLEN_PASSWD;
155 case _SC_NGROUPS_MAX:
158 case _SC_JOB_CONTROL:
160 case _SC_REALTIME_SIGNALS:
161 case _SC_PRIORITY_SCHEDULING:
163 case _SC_ASYNCHRONOUS_IO:
164 case _SC_PRIORITIZED_IO:
165 case _SC_SYNCHRONIZED_IO:
167 case _SC_MAPPED_FILES:
169 case _SC_MEMLOCK_RANGE:
170 case _SC_MEMORY_PROTECTION:
171 case _SC_MESSAGE_PASSING:
173 case _SC_SHARED_MEMORY_OBJECTS:
175 case _SC_AIO_LISTIO_MAX:
177 case _SC_AIO_PRIO_DELTA_MAX:
178 case _SC_DELAYTIMER_MAX:
179 case _SC_MQ_OPEN_MAX:
180 case _SC_MQ_PRIO_MAX:
184 case _SC_SEM_NSEMS_MAX:
185 case _SC_SEM_VALUE_MAX:
186 case _SC_SIGQUEUE_MAX:
196 case _SC_PII_INTERNET_STREAM:
197 case _SC_PII_INTERNET_DGRAM:
198 case _SC_PII_OSI_COTS:
199 case _SC_PII_OSI_CLTS:
203 case _SC_BC_BASE_MAX:
205 case _SC_BC_SCALE_MAX:
206 case _SC_BC_STRING_MAX:
207 case _SC_EXPR_NEST_MAX:
215 case _SC_2_CHAR_TERM:
216 case _SC_2_C_VERSION:
220 case _SC_THREAD_SAFE_FUNCTIONS:
221 case _SC_LOGIN_NAME_MAX:
222 case _SC_TTY_NAME_MAX:
223 case _SC_THREAD_DESTRUCTOR_ITERATIONS:
224 case _SC_THREAD_KEYS_MAX:
225 case _SC_THREAD_STACK_MIN:
226 case _SC_THREAD_THREADS_MAX:
227 case _SC_THREAD_ATTR_STACKADDR:
228 case _SC_THREAD_ATTR_STACKSIZE:
229 case _SC_THREAD_PRIORITY_SCHEDULING:
230 case _SC_THREAD_PRIO_INHERIT:
231 case _SC_THREAD_PRIO_PROTECT:
232 case _SC_THREAD_PROCESS_SHARED:
234 case _SC_XOPEN_VERSION:
235 case _SC_XOPEN_XCU_VERSION:
237 case _SC_XOPEN_CRYPT:
238 case _SC_XOPEN_ENH_I18N:
251 case _SC_XBS5_ILP32_OFF32:
252 case _SC_XBS5_ILP32_OFFBIG:
253 case _SC_XBS5_LP64_OFF64:
254 case _SC_XBS5_LPBIG_OFFBIG:
256 case _SC_POSIX_V6_ILP32_OFF32:
257 case _SC_POSIX_V6_ILP32_OFFBIG:
258 case _SC_POSIX_V6_LP64_OFF64:
259 case _SC_POSIX_V6_LPBIG_OFFBIG:
261 case _SC_POSIX_V7_ILP32_OFF32:
262 case _SC_POSIX_V7_ILP32_OFFBIG:
263 case _SC_POSIX_V7_LP64_OFF64:
264 case _SC_POSIX_V7_LPBIG_OFFBIG:
266 case _SC_XOPEN_LEGACY:
267 case _SC_XOPEN_REALTIME:
268 case _SC_XOPEN_REALTIME_THREADS:
273 __set_errno (ENOSYS);
277 weak_alias (__sysconf, sysconf)
278 libc_hidden_def (__sysconf)
280 stub_warning (sysconf)