/* 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 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, see . */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define NEED_SPEC_ARRAY 0 #include #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 (int name) { switch (name) { /* Also add obsolete or unnecessarily added constants here. */ case _SC_EQUIV_CLASS_MAX: default: __set_errno (EINVAL); return -1; case _SC_ARG_MAX: #ifdef ARG_MAX return ARG_MAX; #else return -1; #endif case _SC_CHILD_MAX: #ifdef CHILD_MAX return CHILD_MAX; #else return __get_child_max (); #endif case _SC_CLK_TCK: return __getclktck (); case _SC_NGROUPS_MAX: #ifdef NGROUPS_MAX return NGROUPS_MAX; #else return -1; #endif case _SC_OPEN_MAX: return __getdtablesize (); case _SC_STREAM_MAX: #ifdef STREAM_MAX return STREAM_MAX; #else return FOPEN_MAX; #endif case _SC_TZNAME_MAX: return -1; case _SC_JOB_CONTROL: #if CONF_IS_DEFINED_SET (_POSIX_JOB_CONTROL) return _POSIX_JOB_CONTROL; #else return -1; #endif case _SC_SAVED_IDS: #if CONF_IS_DEFINED_SET (_POSIX_SAVED_IDS) return 1; #else return -1; #endif case _SC_REALTIME_SIGNALS: #if CONF_IS_DEFINED_SET (_POSIX_REALTIME_SIGNALS) return _POSIX_REALTIME_SIGNALS; #else return -1; #endif case _SC_PRIORITY_SCHEDULING: #if CONF_IS_DEFINED_SET (_POSIX_PRIORITY_SCHEDULING) return _POSIX_PRIORITY_SCHEDULING; #else return -1; #endif case _SC_TIMERS: #if CONF_IS_DEFINED_SET (_POSIX_TIMERS) return _POSIX_TIMERS; #else return -1; #endif case _SC_ASYNCHRONOUS_IO: #if CONF_IS_DEFINED_SET (_POSIX_ASYNCHRONOUS_IO) return _POSIX_ASYNCHRONOUS_IO; #else return -1; #endif case _SC_PRIORITIZED_IO: #if CONF_IS_DEFINED_SET (_POSIX_PRIORITIZED_IO) return _POSIX_PRIORITIZED_IO; #else return -1; #endif case _SC_SYNCHRONIZED_IO: #if CONF_IS_DEFINED_SET (_POSIX_SYNCHRONIZED_IO) return _POSIX_SYNCHRONIZED_IO; #else return -1; #endif case _SC_FSYNC: #if CONF_IS_DEFINED_SET (_POSIX_FSYNC) return _POSIX_FSYNC; #else return -1; #endif case _SC_MAPPED_FILES: #if CONF_IS_DEFINED_SET (_POSIX_MAPPED_FILES) return _POSIX_MAPPED_FILES; #else return -1; #endif case _SC_MEMLOCK: #if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK) return _POSIX_MEMLOCK; #else return -1; #endif case _SC_MEMLOCK_RANGE: #if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK_RANGE) return _POSIX_MEMLOCK_RANGE; #else return -1; #endif case _SC_MEMORY_PROTECTION: #if CONF_IS_DEFINED_SET (_POSIX_MEMORY_PROTECTION) return _POSIX_MEMORY_PROTECTION; #else return -1; #endif case _SC_MESSAGE_PASSING: #if CONF_IS_DEFINED_SET (_POSIX_MESSAGE_PASSING) return _POSIX_MESSAGE_PASSING; #else return -1; #endif case _SC_SEMAPHORES: #if CONF_IS_DEFINED_SET (_POSIX_SEMAPHORES) return _POSIX_SEMAPHORES; #else return -1; #endif case _SC_SHARED_MEMORY_OBJECTS: #if CONF_IS_DEFINED_SET (_POSIX_SHARED_MEMORY_OBJECTS) return _POSIX_SHARED_MEMORY_OBJECTS; #else return -1; #endif case _SC_VERSION: return _POSIX_VERSION; case _SC_PAGESIZE: return __getpagesize (); case _SC_AIO_LISTIO_MAX: #ifdef AIO_LISTIO_MAX return AIO_LISTIO_MAX; #else return -1; #endif case _SC_AIO_MAX: #ifdef AIO_MAX return AIO_MAX; #else return -1; #endif case _SC_AIO_PRIO_DELTA_MAX: #ifdef AIO_PRIO_DELTA_MAX return AIO_PRIO_DELTA_MAX; #else return -1; #endif case _SC_DELAYTIMER_MAX: #ifdef DELAYTIMER_MAX return DELAYTIMER_MAX; #else return -1; #endif case _SC_MQ_OPEN_MAX: #ifdef MQ_OPEN_MAX return MQ_OPEN_MAX; #else return -1; #endif case _SC_MQ_PRIO_MAX: #ifdef MQ_PRIO_MAX return MQ_PRIO_MAX; #else return -1; #endif case _SC_RTSIG_MAX: #ifdef RTSIG_MAX return RTSIG_MAX; #else return -1; #endif case _SC_SEM_NSEMS_MAX: #ifdef SEM_NSEMS_MAX return SEM_NSEMS_MAX; #else return -1; #endif case _SC_SEM_VALUE_MAX: #ifdef SEM_VALUE_MAX return SEM_VALUE_MAX; #else return -1; #endif case _SC_SIGQUEUE_MAX: #ifdef SIGQUEUE_MAX return SIGQUEUE_MAX; #else return -1; #endif case _SC_TIMER_MAX: #ifdef TIMER_MAX return TIMER_MAX; #else return -1; #endif case _SC_BC_BASE_MAX: #ifdef BC_BASE_MAX return BC_BASE_MAX; #else return -1; #endif case _SC_BC_DIM_MAX: #ifdef BC_DIM_MAX return BC_DIM_MAX; #else return -1; #endif case _SC_BC_SCALE_MAX: #ifdef BC_SCALE_MAX return BC_SCALE_MAX; #else return -1; #endif case _SC_BC_STRING_MAX: #ifdef BC_STRING_MAX return BC_STRING_MAX; #else return -1; #endif case _SC_COLL_WEIGHTS_MAX: #ifdef COLL_WEIGHTS_MAX return COLL_WEIGHTS_MAX; #else return -1; #endif case _SC_EXPR_NEST_MAX: #ifdef EXPR_NEST_MAX return EXPR_NEST_MAX; #else return -1; #endif case _SC_LINE_MAX: #ifdef LINE_MAX return LINE_MAX; #else return -1; #endif case _SC_RE_DUP_MAX: #ifdef RE_DUP_MAX return RE_DUP_MAX; #else return -1; #endif case _SC_CHARCLASS_NAME_MAX: #ifdef CHARCLASS_NAME_MAX return CHARCLASS_NAME_MAX; #else return -1; #endif case _SC_PII: #if CONF_IS_DEFINED_SET (_POSIX_PII) return 1; #else return -1; #endif case _SC_PII_XTI: #if CONF_IS_DEFINED_SET (_POSIX_PII_XTI) return 1; #else return -1; #endif case _SC_PII_SOCKET: #if CONF_IS_DEFINED_SET (_POSIX_PII_SOCKET) return 1; #else return -1; #endif case _SC_PII_INTERNET: #if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET) return 1; #else return -1; #endif case _SC_PII_OSI: #if CONF_IS_DEFINED_SET (_POSIX_PII_OSI) return 1; #else return -1; #endif case _SC_POLL: #if CONF_IS_DEFINED_SET (_POSIX_POLL) return 1; #else return -1; #endif case _SC_SELECT: #if CONF_IS_DEFINED_SET (_POSIX_SELECT) return 1; #else return -1; #endif /* The same as _SC_IOV_MAX. */ case _SC_UIO_MAXIOV: #ifdef UIO_MAXIOV return UIO_MAXIOV; #else return -1; #endif case _SC_PII_INTERNET_STREAM: #if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_STREAM) return 1; #else return -1; #endif case _SC_PII_INTERNET_DGRAM: #if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_DGRAM) return 1; #else return -1; #endif case _SC_PII_OSI_COTS: #if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_COTS) return 1; #else return -1; #endif case _SC_PII_OSI_CLTS: #if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_CLTS) return 1; #else return -1; #endif case _SC_PII_OSI_M: #if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_M) return 1; #else return -1; #endif case _SC_T_IOV_MAX: #ifdef _T_IOV_MAX return _T_IOV_MAX; #else return -1; #endif case _SC_2_VERSION: return _POSIX2_VERSION; case _SC_2_C_BIND: #ifdef _POSIX2_C_BIND return _POSIX2_C_BIND; #else return -1; #endif case _SC_2_C_DEV: #ifdef _POSIX2_C_DEV return _POSIX2_C_DEV; #else return -1; #endif case _SC_2_C_VERSION: #ifdef _POSIX2_C_VERSION return _POSIX2_C_VERSION; #else return -1; #endif case _SC_2_FORT_DEV: #ifdef _POSIX2_FORT_DEV return _POSIX2_FORT_DEV; #else return -1; #endif case _SC_2_FORT_RUN: #ifdef _POSIX2_FORT_RUN return _POSIX2_FORT_RUN; #else return -1; #endif case _SC_2_LOCALEDEF: #ifdef _POSIX2_LOCALEDEF return _POSIX2_LOCALEDEF; #else return -1; #endif case _SC_2_SW_DEV: #ifdef _POSIX2_SW_DEV return _POSIX2_SW_DEV; #else return -1; #endif case _SC_2_CHAR_TERM: #ifdef _POSIX2_CHAR_TERM return _POSIX2_CHAR_TERM; #else return -1; #endif case _SC_2_UPE: #ifdef _POSIX2_UPE return _POSIX2_UPE; #else return -1; #endif /* POSIX 1003.1c (POSIX Threads). */ case _SC_THREADS: #if CONF_IS_DEFINED_SET (_POSIX_THREADS) return _POSIX_THREADS; #else return -1; #endif case _SC_THREAD_SAFE_FUNCTIONS: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_SAFE_FUNCTIONS) return _POSIX_THREAD_SAFE_FUNCTIONS; #else return -1; #endif case _SC_GETGR_R_SIZE_MAX: return NSS_BUFLEN_GROUP; case _SC_GETPW_R_SIZE_MAX: return NSS_BUFLEN_PASSWD; case _SC_LOGIN_NAME_MAX: #ifdef LOGIN_NAME_MAX return LOGIN_NAME_MAX; #else return -1; #endif case _SC_TTY_NAME_MAX: #ifdef TTY_NAME_MAX return TTY_NAME_MAX; #else return -1; #endif case _SC_THREAD_DESTRUCTOR_ITERATIONS: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_DESTRUCTOR_ITERATIONS) return _POSIX_THREAD_DESTRUCTOR_ITERATIONS; #else return -1; #endif case _SC_THREAD_KEYS_MAX: #ifdef PTHREAD_KEYS_MAX return PTHREAD_KEYS_MAX; #else return -1; #endif case _SC_THREAD_STACK_MIN: #ifdef PTHREAD_STACK_MIN return PTHREAD_STACK_MIN; #else return -1; #endif case _SC_THREAD_THREADS_MAX: #ifdef PTHREAD_THREADS_MAX return PTHREAD_THREADS_MAX; #else return -1; #endif case _SC_THREAD_ATTR_STACKADDR: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_ATTR_STACKADDR) return _POSIX_THREAD_ATTR_STACKADDR; #else return -1; #endif case _SC_THREAD_ATTR_STACKSIZE: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_ATTR_STACKSIZE) return _POSIX_THREAD_ATTR_STACKSIZE; #else return -1; #endif case _SC_THREAD_PRIORITY_SCHEDULING: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIORITY_SCHEDULING) return _POSIX_THREAD_PRIORITY_SCHEDULING; #else return -1; #endif case _SC_THREAD_PRIO_INHERIT: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIO_INHERIT) return _POSIX_THREAD_PRIO_INHERIT; #else return -1; #endif case _SC_THREAD_PRIO_PROTECT: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIO_PROTECT) return _POSIX_THREAD_PRIO_PROTECT; #else return -1; #endif case _SC_THREAD_PROCESS_SHARED: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_PROCESS_SHARED) return _POSIX_THREAD_PROCESS_SHARED; #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_XOPEN_VERSION: return _XOPEN_VERSION; case _SC_XOPEN_XCU_VERSION: return _XOPEN_XCU_VERSION; case _SC_XOPEN_UNIX: return _XOPEN_UNIX; case _SC_XOPEN_CRYPT: #ifdef _XOPEN_CRYPT return _XOPEN_CRYPT; #else return -1; #endif case _SC_XOPEN_ENH_I18N: #ifdef _XOPEN_ENH_I18N return _XOPEN_ENH_I18N; #else return -1; #endif case _SC_XOPEN_SHM: #ifdef _XOPEN_SHM return _XOPEN_SHM; #else return -1; #endif case _SC_XOPEN_XPG2: #ifdef _XOPEN_XPG2 return _XOPEN_XPG2; #else return -1; #endif case _SC_XOPEN_XPG3: #ifdef _XOPEN_XPG3 return _XOPEN_XPG3; #else return -1; #endif case _SC_XOPEN_XPG4: #ifdef _XOPEN_XPG4 return _XOPEN_XPG4; #else return -1; #endif 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_NL_ARGMAX: #ifdef NL_ARGMAX return NL_ARGMAX; #else return -1; #endif case _SC_NL_LANGMAX: #ifdef NL_LANGMAX return NL_LANGMAX; #else return -1; #endif case _SC_NL_MSGMAX: #ifdef NL_MSGMAX return NL_MSGMAX; #else return -1; #endif case _SC_NL_NMAX: #ifdef NL_NMAX return NL_NMAX; #else return -1; #endif case _SC_NL_SETMAX: #ifdef NL_SETMAX return NL_SETMAX; #else return -1; #endif case _SC_NL_TEXTMAX: #ifdef NL_TEXTMAX return NL_TEXTMAX; #else return -1; #endif #define START_ENV_GROUP(VERSION) \ /* Empty. */ #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 #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; case _SC_XOPEN_REALTIME: #ifdef _XOPEN_REALTIME return _XOPEN_REALTIME; #else return -1; #endif case _SC_XOPEN_REALTIME_THREADS: #ifdef _XOPEN_REALTIME_THREADS return _XOPEN_REALTIME_THREADS; #else return -1; #endif case _SC_ADVISORY_INFO: #if CONF_IS_DEFINED_SET (_POSIX_ADVISORY_INFO) return _POSIX_ADVISORY_INFO; #else return -1; #endif case _SC_BARRIERS: #if CONF_IS_DEFINED_SET (_POSIX_BARRIERS) return _POSIX_BARRIERS; #else return -1; #endif case _SC_BASE: #if CONF_IS_DEFINED_SET (_POSIX_BASE) return _POSIX_BASE; #else return -1; #endif case _SC_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: #if CONF_IS_DEFINED_SET (_POSIX_C_LANG_SUPPORT_R) return _POSIX_C_LANG_SUPPORT_R; #else return -1; #endif case _SC_CLOCK_SELECTION: #if CONF_IS_DEFINED_SET (_POSIX_CLOCK_SELECTION) return _POSIX_CLOCK_SELECTION; #else return -1; #endif case _SC_CPUTIME: #if CONF_IS_DEFINED_SET (_POSIX_CPUTIME) return _POSIX_CPUTIME; #else return -1; #endif case _SC_DEVICE_IO: #if CONF_IS_DEFINED_SET (_POSIX_DEVICE_IO) return _POSIX_DEVICE_IO; #else return -1; #endif case _SC_DEVICE_SPECIFIC: #if CONF_IS_DEFINED_SET (_POSIX_DEVICE_SPECIFIC) return _POSIX_DEVICE_SPECIFIC; #else return -1; #endif case _SC_DEVICE_SPECIFIC_R: #if CONF_IS_DEFINED_SET (_POSIX_DEVICE_SPECIFIC_R) return _POSIX_DEVICE_SPECIFIC_R; #else return -1; #endif case _SC_FD_MGMT: #if CONF_IS_DEFINED_SET (_POSIX_FD_MGMT) return _POSIX_FD_MGMT; #else return -1; #endif case _SC_FIFO: #if CONF_IS_DEFINED_SET (_POSIX_FIFO) return _POSIX_FIFO; #else return -1; #endif case _SC_PIPE: #if CONF_IS_DEFINED_SET (_POSIX_PIPE) return _POSIX_PIPE; #else return -1; #endif case _SC_FILE_ATTRIBUTES: #if CONF_IS_DEFINED_SET (_POSIX_FILE_ATTRIBUTES) return _POSIX_FILE_ATTRIBUTES; #else return -1; #endif case _SC_FILE_LOCKING: #if CONF_IS_DEFINED_SET (_POSIX_FILE_LOCKING) return _POSIX_FILE_LOCKING; #else return -1; #endif case _SC_FILE_SYSTEM: #if CONF_IS_DEFINED_SET (_POSIX_FILE_SYSTEM) return _POSIX_FILE_SYSTEM; #else return -1; #endif case _SC_MONOTONIC_CLOCK: #if CONF_IS_DEFINED_SET (_POSIX_MONOTONIC_CLOCK) return _POSIX_MONOTONIC_CLOCK; #else return -1; #endif case _SC_MULTI_PROCESS: #if CONF_IS_DEFINED_SET (_POSIX_MULTI_PROCESS) return _POSIX_MULTI_PROCESS; #else return -1; #endif case _SC_SINGLE_PROCESS: #if CONF_IS_DEFINED_SET (_POSIX_SINGLE_PROCESS) return _POSIX_SINGLE_PROCESS; #else return -1; #endif case _SC_NETWORKING: #if CONF_IS_DEFINED_SET (_POSIX_NETWORKING) return _POSIX_NETWORKING; #else return -1; #endif case _SC_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: #if CONF_IS_DEFINED_SET (_POSIX_SPIN_LOCKS) return _POSIX_SPIN_LOCKS; #else return -1; #endif case _SC_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: return -1; case _SC_SHELL: #if CONF_IS_DEFINED_SET (_POSIX_SHELL) return _POSIX_SHELL; #else return -1; #endif case _SC_SIGNALS: #if CONF_IS_DEFINED (_POSIX_SIGNALS) return _POSIX_SIGNALS; #else return -1; #endif case _SC_SPAWN: #if CONF_IS_DEFINED_SET (_POSIX_SPAWN) return _POSIX_SPAWN; #else return -1; #endif case _SC_SPORADIC_SERVER: #if CONF_IS_DEFINED_SET (_POSIX_SPORADIC_SERVER) return _POSIX_SPORADIC_SERVER; #else return -1; #endif case _SC_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: #if CONF_IS_DEFINED_SET (_POSIX_SYSTEM_DATABASE) return _POSIX_SYSTEM_DATABASE; #else return -1; #endif case _SC_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: #if CONF_IS_DEFINED_SET (_POSIX_THREAD_CPUTIME) return _POSIX_THREAD_CPUTIME; #else return -1; #endif case _SC_TIMEOUTS: #if CONF_IS_DEFINED_SET (_POSIX_TIMEOUTS) return _POSIX_TIMEOUTS; #else return -1; #endif case _SC_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: #if CONF_IS_DEFINED_SET (_POSIX_USER_GROUPS) return _POSIX_USER_GROUPS; #else return -1; #endif case _SC_USER_GROUPS_R: #if CONF_IS_DEFINED_SET (_POSIX_USER_GROUPS_R) return _POSIX_USER_GROUPS_R; #else return -1; #endif case _SC_2_PBS: #ifdef _POSIX2_PBS return _POSIX2_PBS; #else return -1; #endif case _SC_2_PBS_ACCOUNTING: #ifdef _POSIX2_PBS_ACCOUNTING return _POSIX2_PBS_ACCOUNTING; #else return -1; #endif case _SC_2_PBS_CHECKPOINT: #ifdef _POSIX2_PBS_CHECKPOINT return _POSIX2_PBS_CHECKPOINT; #else return -1; #endif case _SC_2_PBS_LOCATE: #ifdef _POSIX2_PBS_LOCATE return _POSIX2_PBS_LOCATE; #else return -1; #endif case _SC_2_PBS_MESSAGE: #ifdef _POSIX2_PBS_MESSAGE return _POSIX2_PBS_MESSAGE; #else return -1; #endif case _SC_2_PBS_TRACK: #ifdef _POSIX2_PBS_TRACK return _POSIX2_PBS_TRACK; #else return -1; #endif case _SC_SYMLOOP_MAX: #ifdef SYMLOOP_MAX return SYMLOOP_MAX; #else return -1; #endif case _SC_STREAMS: return -1; case _SC_HOST_NAME_MAX: #ifdef HOST_NAME_MAX return HOST_NAME_MAX; #else return -1; #endif case _SC_TRACE: #if CONF_IS_DEFINED_SET (_POSIX_TRACE) return _POSIX_TRACE; #else return -1; #endif case _SC_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: #if CONF_IS_DEFINED_SET (_POSIX_TRACE_INHERIT) return _POSIX_TRACE_INHERIT; #else return -1; #endif case _SC_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 = __xstat64 (_STAT_VER, name, &st) >= 0 ? 1 : -1; __set_errno (save_errno); return ret; } #endif