| /* Copyright (C) 1991-2014 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #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_POSIX_V6_ILP32_OFF32: |
| case _SC_POSIX_V6_ILP32_OFFBIG: |
| case _SC_POSIX_V6_LP64_OFF64: |
| case _SC_POSIX_V6_LPBIG_OFFBIG: |
| |
| case _SC_POSIX_V7_ILP32_OFF32: |
| case _SC_POSIX_V7_ILP32_OFFBIG: |
| case _SC_POSIX_V7_LP64_OFF64: |
| case _SC_POSIX_V7_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) |