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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /posix/sysconf.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
Diffstat (limited to 'posix/sysconf.c')
-rw-r--r--posix/sysconf.c273
1 files changed, 273 insertions, 0 deletions
diff --git a/posix/sysconf.c b/posix/sysconf.c
new file mode 100644
index 0000000..f22685c
--- /dev/null
+++ b/posix/sysconf.c
@@ -0,0 +1,273 @@
+/* Copyright (C) 1991,1993,1995-1997,2001,2002,2003
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <grp.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <time.h>
+#include <limits.h>
+#include <sys/param.h>
+#include <sys/sysinfo.h>
+
+
+/* Get the value of the system variable NAME. */
+long int
+__sysconf (name)
+ int name;
+{
+ switch (name)
+ {
+ default:
+ __set_errno (EINVAL);
+ return -1;
+
+ case _SC_TZNAME_MAX:
+ return MAX (__tzname_max (), _POSIX_TZNAME_MAX);
+
+ case _SC_CHARCLASS_NAME_MAX:
+#ifdef CHARCLASS_NAME_MAX
+ return CHARCLASS_NAME_MAX;
+#else
+ return -1;
+#endif
+
+ case _SC_COLL_WEIGHTS_MAX:
+#ifdef COLL_WEIGHTS_MAX
+ return COLL_WEIGHTS_MAX;
+#else
+ return -1;
+#endif
+
+ case _SC_EQUIV_CLASS_MAX:
+#ifdef EQUIV_CLASS_MAX
+ return EQUIV_CLASS_MAX;
+#else
+ return -1;
+#endif
+
+ case _SC_2_LOCALEDEF:
+#ifdef _POSIX2_LOCALEDEF
+ return _POSIX2_LOCALEDEF;
+#else
+ return -1;
+#endif
+
+ case _SC_NPROCESSORS_CONF:
+ return __get_nprocs_conf ();
+
+ case _SC_NPROCESSORS_ONLN:
+ return __get_nprocs ();
+
+ case _SC_PHYS_PAGES:
+ return __get_phys_pages ();
+
+ case _SC_AVPHYS_PAGES:
+ return __get_avphys_pages ();
+
+ case _SC_ATEXIT_MAX:
+ /* We have no limit since we use lists. */
+ return INT_MAX;
+
+ case _SC_PASS_MAX:
+ /* We have no limit but since the return value might be used to
+ allocate a buffer we restrict the value. */
+ return BUFSIZ;
+
+ case _SC_CHAR_BIT:
+ return CHAR_BIT;
+
+ case _SC_CHAR_MAX:
+ return CHAR_MAX;
+
+ case _SC_CHAR_MIN:
+ return CHAR_MIN;
+
+ case _SC_INT_MAX:
+ return INT_MAX;
+
+ case _SC_INT_MIN:
+ return INT_MIN;
+
+ case _SC_LONG_BIT:
+ return sizeof (long int) * CHAR_BIT;
+
+ case _SC_WORD_BIT:
+ return sizeof (int) * CHAR_BIT;
+
+ case _SC_MB_LEN_MAX:
+ return MB_LEN_MAX;
+
+ case _SC_NZERO:
+ return NZERO;
+
+ case _SC_SSIZE_MAX:
+ return _POSIX_SSIZE_MAX;
+
+ case _SC_SCHAR_MAX:
+ return SCHAR_MAX;
+
+ case _SC_SCHAR_MIN:
+ return SCHAR_MIN;
+
+ case _SC_SHRT_MAX:
+ return SHRT_MAX;
+
+ case _SC_SHRT_MIN:
+ return SHRT_MIN;
+
+ case _SC_UCHAR_MAX:
+ return UCHAR_MAX;
+
+ case _SC_UINT_MAX:
+ return UINT_MAX;
+
+ case _SC_ULONG_MAX:
+ return ULONG_MAX;
+
+ case _SC_USHRT_MAX:
+ return USHRT_MAX;
+
+ case _SC_GETGR_R_SIZE_MAX:
+ return NSS_BUFLEN_GROUP;
+
+ case _SC_GETPW_R_SIZE_MAX:
+ return NSS_BUFLEN_PASSWD;
+
+ case _SC_ARG_MAX:
+ case _SC_CHILD_MAX:
+ case _SC_CLK_TCK:
+ case _SC_NGROUPS_MAX:
+ case _SC_OPEN_MAX:
+ case _SC_STREAM_MAX:
+ case _SC_JOB_CONTROL:
+ case _SC_SAVED_IDS:
+ case _SC_REALTIME_SIGNALS:
+ case _SC_PRIORITY_SCHEDULING:
+ case _SC_TIMERS:
+ case _SC_ASYNCHRONOUS_IO:
+ case _SC_PRIORITIZED_IO:
+ case _SC_SYNCHRONIZED_IO:
+ case _SC_FSYNC:
+ case _SC_MAPPED_FILES:
+ case _SC_MEMLOCK:
+ case _SC_MEMLOCK_RANGE:
+ case _SC_MEMORY_PROTECTION:
+ case _SC_MESSAGE_PASSING:
+ case _SC_SEMAPHORES:
+ case _SC_SHARED_MEMORY_OBJECTS:
+
+ case _SC_AIO_LISTIO_MAX:
+ case _SC_AIO_MAX:
+ case _SC_AIO_PRIO_DELTA_MAX:
+ case _SC_DELAYTIMER_MAX:
+ case _SC_MQ_OPEN_MAX:
+ case _SC_MQ_PRIO_MAX:
+ case _SC_VERSION:
+ case _SC_PAGESIZE:
+ case _SC_RTSIG_MAX:
+ case _SC_SEM_NSEMS_MAX:
+ case _SC_SEM_VALUE_MAX:
+ case _SC_SIGQUEUE_MAX:
+ case _SC_TIMER_MAX:
+
+ case _SC_PII:
+ case _SC_PII_XTI:
+ case _SC_PII_SOCKET:
+ case _SC_PII_OSI:
+ case _SC_POLL:
+ case _SC_SELECT:
+ case _SC_UIO_MAXIOV:
+ case _SC_PII_INTERNET_STREAM:
+ case _SC_PII_INTERNET_DGRAM:
+ case _SC_PII_OSI_COTS:
+ case _SC_PII_OSI_CLTS:
+ case _SC_PII_OSI_M:
+ case _SC_T_IOV_MAX:
+
+ case _SC_BC_BASE_MAX:
+ case _SC_BC_DIM_MAX:
+ case _SC_BC_SCALE_MAX:
+ case _SC_BC_STRING_MAX:
+ case _SC_EXPR_NEST_MAX:
+ case _SC_LINE_MAX:
+ case _SC_RE_DUP_MAX:
+ case _SC_2_VERSION:
+ case _SC_2_C_BIND:
+ case _SC_2_C_DEV:
+ case _SC_2_FORT_DEV:
+ case _SC_2_SW_DEV:
+ case _SC_2_CHAR_TERM:
+ case _SC_2_C_VERSION:
+ case _SC_2_UPE:
+
+ case _SC_THREADS:
+ case _SC_THREAD_SAFE_FUNCTIONS:
+ case _SC_LOGIN_NAME_MAX:
+ case _SC_TTY_NAME_MAX:
+ case _SC_THREAD_DESTRUCTOR_ITERATIONS:
+ case _SC_THREAD_KEYS_MAX:
+ case _SC_THREAD_STACK_MIN:
+ case _SC_THREAD_THREADS_MAX:
+ case _SC_THREAD_ATTR_STACKADDR:
+ case _SC_THREAD_ATTR_STACKSIZE:
+ case _SC_THREAD_PRIORITY_SCHEDULING:
+ case _SC_THREAD_PRIO_INHERIT:
+ case _SC_THREAD_PRIO_PROTECT:
+ case _SC_THREAD_PROCESS_SHARED:
+
+ case _SC_XOPEN_VERSION:
+ case _SC_XOPEN_XCU_VERSION:
+ case _SC_XOPEN_UNIX:
+ case _SC_XOPEN_CRYPT:
+ case _SC_XOPEN_ENH_I18N:
+ case _SC_XOPEN_SHM:
+ case _SC_XOPEN_XPG2:
+ case _SC_XOPEN_XPG3:
+ case _SC_XOPEN_XPG4:
+
+ case _SC_NL_ARGMAX:
+ case _SC_NL_LANGMAX:
+ case _SC_NL_MSGMAX:
+ case _SC_NL_NMAX:
+ case _SC_NL_SETMAX:
+ case _SC_NL_TEXTMAX:
+
+ case _SC_XBS5_ILP32_OFF32:
+ case _SC_XBS5_ILP32_OFFBIG:
+ case _SC_XBS5_LP64_OFF64:
+ case _SC_XBS5_LPBIG_OFFBIG:
+
+ case _SC_XOPEN_LEGACY:
+ case _SC_XOPEN_REALTIME:
+ case _SC_XOPEN_REALTIME_THREADS:
+
+ break;
+ }
+
+ __set_errno (ENOSYS);
+ return -1;
+}
+
+weak_alias (__sysconf, sysconf)
+libc_hidden_def (__sysconf)
+
+stub_warning (sysconf)
+#include <stub-tag.h>