/* Copyright (C) 1991-2024 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 <https://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 (int name) { switch (name) { default: __set_errno (EINVAL); return -1; case _SC_TZNAME_MAX: return -1; 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: case _SC_MINSIGSTKSZ: case _SC_SIGSTKSZ: break; } __set_errno (ENOSYS); return -1; } weak_alias (__sysconf, sysconf) libc_hidden_def (__sysconf) stub_warning (sysconf)