-/* Copyright (C) 1991,1993,1995-1997,1999-2003,2004
- Free Software Foundation, Inc.
+/* Copyright (C) 1991-2020 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
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. */
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <limits.h>
#include <pwd.h>
#include <stddef.h>
#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/param.h>
+#include <sys/stat.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
+#include <sys/uio.h>
#include <regex.h>
+#define NEED_SPEC_ARRAY 0
+#include <posix-conf-vars.h>
+
+#define NEED_CHECK_SPEC \
+ (!defined _XBS5_ILP32_OFF32 || !defined _XBS5_ILP32_OFFBIG \
+ || !defined _XBS5_LP64_OFF64 || !defined _XBS5_LPBIG_OFFBIG \
+ || !defined _POSIX_V6_ILP32_OFF32 || !defined _POSIX_V6_ILP32_OFFBIG \
+ || !defined _POSIX_V6_LP64_OFF64 || !defined _POSIX_V6_LPBIG_OFFBIG \
+ || !defined _POSIX_V7_ILP32_OFF32 || !defined _POSIX_V7_ILP32_OFFBIG \
+ || !defined _POSIX_V7_LP64_OFF64 || !defined _POSIX_V7_LPBIG_OFFBIG)
+#if NEED_CHECK_SPEC
+static long int __sysconf_check_spec (const char *spec);
+#endif
+
/* Get the value of the system variable NAME. */
long int
-__sysconf (name)
- int name;
+__sysconf (int name)
{
switch (name)
{
#ifdef CHILD_MAX
return CHILD_MAX;
#else
- return -1;
+ return __get_child_max ();
#endif
case _SC_CLK_TCK:
#endif
case _SC_TZNAME_MAX:
- return MAX (__tzname_max (), _POSIX_TZNAME_MAX);
+ return -1;
case _SC_JOB_CONTROL:
-#ifdef _POSIX_JOB_CONTROL
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_JOB_CONTROL)
+ return _POSIX_JOB_CONTROL;
#else
return -1;
#endif
case _SC_SAVED_IDS:
-#ifdef _POSIX_SAVED_IDS
+#if CONF_IS_DEFINED_SET (_POSIX_SAVED_IDS)
return 1;
#else
return -1;
#endif
case _SC_REALTIME_SIGNALS:
-#ifdef _POSIX_REALTIME_SIGNALS
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_REALTIME_SIGNALS)
+ return _POSIX_REALTIME_SIGNALS;
#else
return -1;
#endif
case _SC_PRIORITY_SCHEDULING:
-#ifdef _POSIX_PRIORITY_SCHEDULING
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_PRIORITY_SCHEDULING)
+ return _POSIX_PRIORITY_SCHEDULING;
#else
return -1;
#endif
case _SC_TIMERS:
-#ifdef _POSIX_TIMERS
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_TIMERS)
+ return _POSIX_TIMERS;
#else
return -1;
#endif
case _SC_ASYNCHRONOUS_IO:
-#ifdef _POSIX_ASYNCHRONOUS_IO
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_ASYNCHRONOUS_IO)
+ return _POSIX_ASYNCHRONOUS_IO;
#else
return -1;
#endif
case _SC_PRIORITIZED_IO:
-#ifdef _POSIX_PRIORITIZED_IO
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_PRIORITIZED_IO)
+ return _POSIX_PRIORITIZED_IO;
#else
return -1;
#endif
case _SC_SYNCHRONIZED_IO:
-#ifdef _POSIX_SYNCHRONIZED_IO
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_SYNCHRONIZED_IO)
+ return _POSIX_SYNCHRONIZED_IO;
#else
return -1;
#endif
case _SC_FSYNC:
-#ifdef _POSIX_FSYNC
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_FSYNC)
+ return _POSIX_FSYNC;
#else
return -1;
#endif
case _SC_MAPPED_FILES:
-#ifdef _POSIX_MAPPED_FILES
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_MAPPED_FILES)
+ return _POSIX_MAPPED_FILES;
#else
return -1;
#endif
case _SC_MEMLOCK:
-#ifdef _POSIX_MEMLOCK
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK)
+ return _POSIX_MEMLOCK;
#else
return -1;
#endif
case _SC_MEMLOCK_RANGE:
-#ifdef _POSIX_MEMLOCK_RANGE
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK_RANGE)
+ return _POSIX_MEMLOCK_RANGE;
#else
return -1;
#endif
case _SC_MEMORY_PROTECTION:
-#ifdef _POSIX_MEMORY_PROTECTION
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_MEMORY_PROTECTION)
+ return _POSIX_MEMORY_PROTECTION;
#else
return -1;
#endif
case _SC_MESSAGE_PASSING:
-#ifdef _POSIX_MESSAGE_PASSING
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_MESSAGE_PASSING)
+ return _POSIX_MESSAGE_PASSING;
#else
return -1;
#endif
case _SC_SEMAPHORES:
-#ifdef _POSIX_SEMAPHORES
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_SEMAPHORES)
+ return _POSIX_SEMAPHORES;
#else
return -1;
#endif
case _SC_SHARED_MEMORY_OBJECTS:
-#ifdef _POSIX_SHARED_MEMORY_OBJECTS
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_SHARED_MEMORY_OBJECTS)
+ return _POSIX_SHARED_MEMORY_OBJECTS;
#else
return -1;
#endif
#endif
case _SC_PII:
-#ifdef _POSIX_PII
+#if CONF_IS_DEFINED_SET (_POSIX_PII)
return 1;
#else
return -1;
#endif
case _SC_PII_XTI:
-#ifdef _POSIX_PII_XTI
+#if CONF_IS_DEFINED_SET (_POSIX_PII_XTI)
return 1;
#else
return -1;
#endif
case _SC_PII_SOCKET:
-#ifdef _POSIX_PII_SOCKET
+#if CONF_IS_DEFINED_SET (_POSIX_PII_SOCKET)
return 1;
#else
return -1;
#endif
case _SC_PII_INTERNET:
-#ifdef _POSIX_PII_INTERNET
+#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET)
return 1;
#else
return -1;
#endif
case _SC_PII_OSI:
-#ifdef _POSIX_PII_OSI
+#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI)
return 1;
#else
return -1;
#endif
case _SC_POLL:
-#ifdef _POSIX_POLL
+#if CONF_IS_DEFINED_SET (_POSIX_POLL)
return 1;
#else
return -1;
#endif
case _SC_SELECT:
-#ifdef _POSIX_SELECT
+#if CONF_IS_DEFINED_SET (_POSIX_SELECT)
return 1;
#else
return -1;
#endif
case _SC_PII_INTERNET_STREAM:
-#ifdef _POSIX_PII_INTERNET_STREAM
+#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_STREAM)
return 1;
#else
return -1;
#endif
case _SC_PII_INTERNET_DGRAM:
-#ifdef _POSIX_PII_INTERNET_DGRAM
+#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_DGRAM)
return 1;
#else
return -1;
#endif
case _SC_PII_OSI_COTS:
-#ifdef _POSIX_PII_OSI_COTS
+#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_COTS)
return 1;
#else
return -1;
#endif
case _SC_PII_OSI_CLTS:
-#ifdef _POSIX_PII_OSI_CLTS
+#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_CLTS)
return 1;
#else
return -1;
#endif
case _SC_PII_OSI_M:
-#ifdef _POSIX_PII_OSI_M
+#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_M)
return 1;
#else
return -1;
/* POSIX 1003.1c (POSIX Threads). */
case _SC_THREADS:
-#ifdef _POSIX_THREADS
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_THREADS)
+ return _POSIX_THREADS;
#else
return -1;
#endif
case _SC_THREAD_SAFE_FUNCTIONS:
-#ifdef _POSIX_THREAD_SAFE_FUNCTIONS
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_SAFE_FUNCTIONS)
+ return _POSIX_THREAD_SAFE_FUNCTIONS;
#else
return -1;
#endif
#endif
case _SC_THREAD_DESTRUCTOR_ITERATIONS:
-#ifdef _POSIX_THREAD_DESTRUCTOR_ITERATIONS
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_DESTRUCTOR_ITERATIONS)
return _POSIX_THREAD_DESTRUCTOR_ITERATIONS;
#else
return -1;
#endif
case _SC_THREAD_ATTR_STACKADDR:
-#ifdef _POSIX_THREAD_ATTR_STACKADDR
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_ATTR_STACKADDR)
+ return _POSIX_THREAD_ATTR_STACKADDR;
#else
return -1;
#endif
case _SC_THREAD_ATTR_STACKSIZE:
-#ifdef _POSIX_THREAD_ATTR_STACKSIZE
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_ATTR_STACKSIZE)
+ return _POSIX_THREAD_ATTR_STACKSIZE;
#else
return -1;
#endif
case _SC_THREAD_PRIORITY_SCHEDULING:
-#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIORITY_SCHEDULING)
+ return _POSIX_THREAD_PRIORITY_SCHEDULING;
#else
return -1;
#endif
case _SC_THREAD_PRIO_INHERIT:
-#ifdef _POSIX_THREAD_PRIO_INHERIT
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIO_INHERIT)
+ return _POSIX_THREAD_PRIO_INHERIT;
#else
return -1;
#endif
case _SC_THREAD_PRIO_PROTECT:
-#ifdef _POSIX_THREAD_PRIO_PROTECT
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIO_PROTECT)
+ return _POSIX_THREAD_PRIO_PROTECT;
#else
return -1;
#endif
case _SC_THREAD_PROCESS_SHARED:
-#ifdef _POSIX_THREAD_PROCESS_SHARED
- return 1;
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_PROCESS_SHARED)
+ return _POSIX_THREAD_PROCESS_SHARED;
#else
return -1;
#endif
return -1;
#endif
- case _SC_XBS5_ILP32_OFF32:
-#ifdef _XBS5_ILP32_OFF32
- return _XBS5_ILP32_OFF32;
-#else
- return -1;
-#endif
- case _SC_XBS5_ILP32_OFFBIG:
-#ifdef _XBS5_ILP32_OFFBIG
- return _XBS5_ILP32_OFFBIG;
-#else
- return -1;
-#endif
- case _SC_XBS5_LP64_OFF64:
-#ifdef _XBS5_LP64_OFF64
- return _XBS5_LP64_OFF64;
-#else
- return -1;
-#endif
- case _SC_XBS5_LPBIG_OFFBIG:
-#ifdef _XBS5_LPBIG_OFFBIG
- return _XBS5_LPBIG_OFFBIG;
-#else
- return -1;
-#endif
+#define START_ENV_GROUP(VERSION) \
+ /* Empty. */
- case _SC_V6_ILP32_OFF32:
-#ifdef _POSIX_V6_ILP32_OFF32
- return _POSIX_V6_ILP32_OFF32;
-#else
- return -1;
-#endif
- case _SC_V6_ILP32_OFFBIG:
-#ifdef _POSIX_V6_ILP32_OFFBIG
- return _POSIX_V6_ILP32_OFFBIG;
-#else
- return -1;
-#endif
- case _SC_V6_LP64_OFF64:
-#ifdef _POSIX_V6_LP64_OFF64
- return _POSIX_V6_LP64_OFF64;
-#else
- return -1;
-#endif
- case _SC_V6_LPBIG_OFFBIG:
-#ifdef _POSIX_V6_LPBIG_OFFBIG
- return _POSIX_V6_LPBIG_OFFBIG;
-#else
- return -1;
-#endif
+#define END_ENV_GROUP(VERSION) \
+ /* Empty. */
+
+#define KNOWN_ABSENT_ENVIRONMENT(SC_PREFIX, ENV_PREFIX, SUFFIX) \
+ case _SC_##SC_PREFIX##_##SUFFIX: \
+ return _##ENV_PREFIX##_##SUFFIX;
+
+#define KNOWN_PRESENT_ENVIRONMENT(SC_PREFIX, ENV_PREFIX, SUFFIX) \
+ case _SC_##SC_PREFIX##_##SUFFIX: \
+ return _##ENV_PREFIX##_##SUFFIX;
+
+#define UNKNOWN_ENVIRONMENT(SC_PREFIX, ENV_PREFIX, SUFFIX) \
+ case _SC_##SC_PREFIX##_##SUFFIX: \
+ return __sysconf_check_spec (#SUFFIX);
+
+#include <posix/posix-envs.def>
+
+#undef START_ENV_GROUP
+#undef END_ENV_GROUP
+#undef KNOWN_ABSENT_ENVIRONMENT
+#undef KNOWN_PRESENT_ENVIRONMENT
+#undef UNKNOWN_ENVIRONMENT
case _SC_XOPEN_LEGACY:
return _XOPEN_LEGACY;
#endif
case _SC_ADVISORY_INFO:
-#ifdef _POSIX_ADVISORY_INFO
+#if CONF_IS_DEFINED_SET (_POSIX_ADVISORY_INFO)
return _POSIX_ADVISORY_INFO;
#else
return -1;
#endif
case _SC_BARRIERS:
-#ifdef _POSIX_BARRIERS
+#if CONF_IS_DEFINED_SET (_POSIX_BARRIERS)
return _POSIX_BARRIERS;
#else
return -1;
#endif
case _SC_BASE:
-#ifdef _POSIX_BASE
+#if CONF_IS_DEFINED_SET (_POSIX_BASE)
return _POSIX_BASE;
#else
return -1;
#endif
case _SC_C_LANG_SUPPORT:
-#ifdef _POSIX_C_LANG_SUPPORT
+#if CONF_IS_DEFINED_SET (_POSIX_C_LANG_SUPPORT)
return _POSIX_C_LANG_SUPPORT;
#else
return -1;
#endif
case _SC_C_LANG_SUPPORT_R:
-#ifdef _POSIX_C_LANG_SUPPORT_R
+#if CONF_IS_DEFINED_SET (_POSIX_C_LANG_SUPPORT_R)
return _POSIX_C_LANG_SUPPORT_R;
#else
return -1;
#endif
case _SC_CLOCK_SELECTION:
-#ifdef _POSIX_CLOCK_SELECTION
+#if CONF_IS_DEFINED_SET (_POSIX_CLOCK_SELECTION)
return _POSIX_CLOCK_SELECTION;
#else
return -1;
#endif
case _SC_CPUTIME:
-#ifdef _POSIX_CPUTIME
+#if CONF_IS_DEFINED_SET (_POSIX_CPUTIME)
return _POSIX_CPUTIME;
#else
return -1;
#endif
case _SC_DEVICE_IO:
-#ifdef _POSIX_DEVICE_IO
+#if CONF_IS_DEFINED_SET (_POSIX_DEVICE_IO)
return _POSIX_DEVICE_IO;
#else
return -1;
#endif
case _SC_DEVICE_SPECIFIC:
-#ifdef _POSIX_DEVICE_SPCIFIC
+#if CONF_IS_DEFINED_SET (_POSIX_DEVICE_SPECIFIC)
return _POSIX_DEVICE_SPECIFIC;
#else
return -1;
#endif
case _SC_DEVICE_SPECIFIC_R:
-#ifdef _POSIX_DEVICE_SPCIFIC_R
+#if CONF_IS_DEFINED_SET (_POSIX_DEVICE_SPECIFIC_R)
return _POSIX_DEVICE_SPECIFIC_R;
#else
return -1;
#endif
case _SC_FD_MGMT:
-#ifdef _POSIX_FD_MGMT
+#if CONF_IS_DEFINED_SET (_POSIX_FD_MGMT)
return _POSIX_FD_MGMT;
#else
return -1;
#endif
case _SC_FIFO:
-#ifdef _POSIX_FIFO
+#if CONF_IS_DEFINED_SET (_POSIX_FIFO)
return _POSIX_FIFO;
#else
return -1;
#endif
case _SC_PIPE:
-#ifdef _POSIX_PIPE
+#if CONF_IS_DEFINED_SET (_POSIX_PIPE)
return _POSIX_PIPE;
#else
return -1;
#endif
case _SC_FILE_ATTRIBUTES:
-#ifdef _POSIX_FILE_ATTRIBUTES
+#if CONF_IS_DEFINED_SET (_POSIX_FILE_ATTRIBUTES)
return _POSIX_FILE_ATTRIBUTES;
#else
return -1;
#endif
case _SC_FILE_LOCKING:
-#ifdef _POSIX_FILE_LOCKING
+#if CONF_IS_DEFINED_SET (_POSIX_FILE_LOCKING)
return _POSIX_FILE_LOCKING;
#else
return -1;
#endif
case _SC_FILE_SYSTEM:
-#ifdef _POSIX_FILE_SYSTEM
+#if CONF_IS_DEFINED_SET (_POSIX_FILE_SYSTEM)
return _POSIX_FILE_SYSTEM;
#else
return -1;
#endif
case _SC_MONOTONIC_CLOCK:
-#if _POSIX_MONOTONIC_CLOCK
+#if CONF_IS_DEFINED_SET (_POSIX_MONOTONIC_CLOCK)
return _POSIX_MONOTONIC_CLOCK;
#else
return -1;
#endif
case _SC_MULTI_PROCESS:
-#ifdef _POSIX_MULTI_PROCESS
+#if CONF_IS_DEFINED_SET (_POSIX_MULTI_PROCESS)
return _POSIX_MULTI_PROCESS;
#else
return -1;
#endif
case _SC_SINGLE_PROCESS:
-#ifdef _POSIX_SINGLE_PROCESS
+#if CONF_IS_DEFINED_SET (_POSIX_SINGLE_PROCESS)
return _POSIX_SINGLE_PROCESS;
#else
return -1;
#endif
case _SC_NETWORKING:
-#ifdef _POSIX_NETWORKING
+#if CONF_IS_DEFINED_SET (_POSIX_NETWORKING)
return _POSIX_NETWORKING;
#else
return -1;
#endif
case _SC_READER_WRITER_LOCKS:
-#ifdef _POSIX_READER_WRITER_LOCKS
+#if CONF_IS_DEFINED_SET (_POSIX_READER_WRITER_LOCKS)
return _POSIX_READER_WRITER_LOCKS;
#else
return -1;
#endif
case _SC_SPIN_LOCKS:
-#ifdef _POSIX_SPIN_LOCKS
+#if CONF_IS_DEFINED_SET (_POSIX_SPIN_LOCKS)
return _POSIX_SPIN_LOCKS;
#else
return -1;
#endif
case _SC_REGEXP:
-#ifdef _POSIX_REGEXP
+#if CONF_IS_DEFINED_SET (_POSIX_REGEXP)
return _POSIX_REGEXP;
#else
return -1;
#endif
+ /* _REGEX_VERSION has been removed with IEEE Std 1003.1-2001/Cor 2-2004,
+ item XSH/TC2/D6/137. */
case _SC_REGEX_VERSION:
-#ifdef _POSIX_REGEX_VERSION
- return _POSIX_REGEX_VERSION;
-#else
return -1;
-#endif
case _SC_SHELL:
-#ifdef _POSIX_SHELL
+#if CONF_IS_DEFINED_SET (_POSIX_SHELL)
return _POSIX_SHELL;
#else
return -1;
#endif
case _SC_SIGNALS:
-#ifdef _POSUX_SIGNALS
+#if CONF_IS_DEFINED (_POSIX_SIGNALS)
return _POSIX_SIGNALS;
#else
return -1;
#endif
case _SC_SPAWN:
-#ifdef _POSIX_SPAWN
+#if CONF_IS_DEFINED_SET (_POSIX_SPAWN)
return _POSIX_SPAWN;
#else
return -1;
#endif
case _SC_SPORADIC_SERVER:
-#ifdef _POSIX_SPORADIC_SERVER
+#if CONF_IS_DEFINED_SET (_POSIX_SPORADIC_SERVER)
return _POSIX_SPORADIC_SERVER;
#else
return -1;
#endif
case _SC_THREAD_SPORADIC_SERVER:
-#ifdef _POSIX_THREAD_SPORADIC_SERVER
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_SPORADIC_SERVER)
return _POSIX_THREAD_SPORADIC_SERVER;
#else
return -1;
#endif
case _SC_SYSTEM_DATABASE:
-#ifdef _POSIX_SYSTEM_DATABASE
+#if CONF_IS_DEFINED_SET (_POSIX_SYSTEM_DATABASE)
return _POSIX_SYSTEM_DATABASE;
#else
return -1;
#endif
case _SC_SYSTEM_DATABASE_R:
-#ifdef _POSIX_SYSTEM_DATABASE_R
+#if CONF_IS_DEFINED_SET (_POSIX_SYSTEM_DATABASE_R)
return _POSIX_SYSTEM_DATABASE_R;
#else
return -1;
#endif
case _SC_THREAD_CPUTIME:
-#ifdef _POSIX_THREAD_CPUTIME
+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_CPUTIME)
return _POSIX_THREAD_CPUTIME;
#else
return -1;
#endif
case _SC_TIMEOUTS:
-#ifdef _POSIX_TIMEOUTS
+#if CONF_IS_DEFINED_SET (_POSIX_TIMEOUTS)
return _POSIX_TIMEOUTS;
#else
return -1;
#endif
case _SC_TYPED_MEMORY_OBJECTS:
-#ifdef _POSIX_TYPED_MEMORY_OBJECTS
+#if CONF_IS_DEFINED_SET (_POSIX_TYPED_MEMORY_OBJECTS)
return _POSIX_TYPED_MEMORY_OBJECTS;
#else
return -1;
#endif
case _SC_USER_GROUPS:
-#ifdef _POSIX_USER_GROUPS
+#if CONF_IS_DEFINED_SET (_POSIX_USER_GROUPS)
return _POSIX_USER_GROUPS;
#else
return -1;
#endif
case _SC_USER_GROUPS_R:
-#ifdef _POSIX_USER_GROUPS_R
+#if CONF_IS_DEFINED_SET (_POSIX_USER_GROUPS_R)
return _POSIX_USER_GROUPS_R;
#else
return -1;
#endif
case _SC_STREAMS:
-#ifdef _XOPEN_STREAMS
- return _XOPEN_STREAMS;
-#else
return -1;
-#endif
case _SC_HOST_NAME_MAX:
#ifdef HOST_NAME_MAX
#endif
case _SC_TRACE:
-#ifdef _POSIX_TRACE
+#if CONF_IS_DEFINED_SET (_POSIX_TRACE)
return _POSIX_TRACE;
#else
return -1;
#endif
case _SC_TRACE_EVENT_FILTER:
-#ifdef _POSIX_TRACE_EVENT_FILTER
+#if CONF_IS_DEFINED_SET (_POSIX_TRACE_EVENT_FILTER)
return _POSIX_TRACE_EVENT_FILTER;
#else
return -1;
#endif
case _SC_TRACE_INHERIT:
-#ifdef _POSIX_TRACE_INHERIT
+#if CONF_IS_DEFINED_SET (_POSIX_TRACE_INHERIT)
return _POSIX_TRACE_INHERIT;
#else
return -1;
#endif
case _SC_TRACE_LOG:
-#ifdef _POSIX_TRACE_LOG
+#if CONF_IS_DEFINED_SET (_POSIX_TRACE_LOG)
return _POSIX_TRACE_LOG;
#else
return -1;
#endif
+
+ case _SC_TRACE_EVENT_NAME_MAX:
+ case _SC_TRACE_NAME_MAX:
+ case _SC_TRACE_SYS_MAX:
+ case _SC_TRACE_USER_EVENT_MAX:
+ /* No support for tracing. */
+
+ case _SC_XOPEN_STREAMS:
+ /* No support for STREAMS. */
+ return -1;
+
+ case _SC_LEVEL1_ICACHE_SIZE:
+ case _SC_LEVEL1_ICACHE_ASSOC:
+ case _SC_LEVEL1_ICACHE_LINESIZE:
+ case _SC_LEVEL1_DCACHE_SIZE:
+ case _SC_LEVEL1_DCACHE_ASSOC:
+ case _SC_LEVEL1_DCACHE_LINESIZE:
+ case _SC_LEVEL2_CACHE_SIZE:
+ case _SC_LEVEL2_CACHE_ASSOC:
+ case _SC_LEVEL2_CACHE_LINESIZE:
+ case _SC_LEVEL3_CACHE_SIZE:
+ case _SC_LEVEL3_CACHE_ASSOC:
+ case _SC_LEVEL3_CACHE_LINESIZE:
+ case _SC_LEVEL4_CACHE_SIZE:
+ case _SC_LEVEL4_CACHE_ASSOC:
+ case _SC_LEVEL4_CACHE_LINESIZE:
+ /* In general we cannot determine these values. Therefore we
+ return zero which indicates that no information is
+ available. */
+ return 0;
+
+ case _SC_IPV6:
+#if CONF_IS_DEFINED_SET (_POSIX_IPV6)
+ return _POSIX_IPV6;
+#else
+ return -1;
+#endif
+
+ case _SC_RAW_SOCKETS:
+#if CONF_IS_DEFINED_SET (_POSIX_RAW_SOCKETS)
+ return _POSIX_RAW_SOCKETS;
+#else
+ return -1;
+#endif
}
}
#undef __sysconf
weak_alias (__sysconf, sysconf)
libc_hidden_def (__sysconf)
+
+#if NEED_CHECK_SPEC
+static long int
+__sysconf_check_spec (const char *spec)
+{
+ int save_errno = errno;
+
+ const char *getconf_dir = __libc_secure_getenv ("GETCONF_DIR") ?: GETCONF_DIR;
+ size_t getconf_dirlen = strlen (getconf_dir);
+ size_t speclen = strlen (spec);
+
+ char name[getconf_dirlen + sizeof ("/POSIX_V6_") + speclen];
+ memcpy (mempcpy (mempcpy (name, getconf_dir, getconf_dirlen),
+ "/POSIX_V6_", sizeof ("/POSIX_V6_") - 1),
+ spec, speclen + 1);
+
+ struct stat64 st;
+ long int ret = __stat64 (name, &st) >= 0 ? 1 : -1;
+
+ __set_errno (save_errno);
+ return ret;
+}
+#endif
projects / thirdparty / glibc.git / blobdiff