mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
ddcf5a9170
The NEED_CHECK_SPEC is defined as:
#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)
Which is undefined behavior accordingly to C Standard (Preprocessing
directives, p4).
Checked on x86_64-linux-gnu.
1241 lines
24 KiB
C
1241 lines
24 KiB
C
/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <limits.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/sysinfo.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <regex.h>
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#include <signal.h>
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#include <sysconf-pthread_stack_min.h>
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#define NEED_SPEC_ARRAY 0
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#include <posix-conf-vars.h>
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#if !defined _XBS5_ILP32_OFF32 || !defined _XBS5_ILP32_OFFBIG \
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|| !defined _XBS5_LP64_OFF64 || !defined _XBS5_LPBIG_OFFBIG \
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|| !defined _POSIX_V6_ILP32_OFF32 || !defined _POSIX_V6_ILP32_OFFBIG \
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|| !defined _POSIX_V6_LP64_OFF64 || !defined _POSIX_V6_LPBIG_OFFBIG \
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|| !defined _POSIX_V7_ILP32_OFF32 || !defined _POSIX_V7_ILP32_OFFBIG \
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|| !defined _POSIX_V7_LP64_OFF64 || !defined _POSIX_V7_LPBIG_OFFBIG
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# define NEED_CHECK_SPEC 1
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#else
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# define NEED_CHECK_SPEC 0
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#endif
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#if NEED_CHECK_SPEC
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static long int __sysconf_check_spec (const char *spec);
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#endif
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/* Get the value of the system variable NAME. */
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long int
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__sysconf (int name)
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{
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switch (name)
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{
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/* Also add obsolete or unnecessarily added constants here. */
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case _SC_EQUIV_CLASS_MAX:
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default:
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__set_errno (EINVAL);
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return -1;
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case _SC_ARG_MAX:
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#ifdef ARG_MAX
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return ARG_MAX;
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#else
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return -1;
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#endif
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case _SC_CHILD_MAX:
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#ifdef CHILD_MAX
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return CHILD_MAX;
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#else
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return __get_child_max ();
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#endif
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case _SC_CLK_TCK:
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return __getclktck ();
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case _SC_NGROUPS_MAX:
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#ifdef NGROUPS_MAX
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return NGROUPS_MAX;
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#else
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return -1;
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#endif
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case _SC_OPEN_MAX:
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return __getdtablesize ();
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case _SC_STREAM_MAX:
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#ifdef STREAM_MAX
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return STREAM_MAX;
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#else
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return FOPEN_MAX;
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#endif
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case _SC_TZNAME_MAX:
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return -1;
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case _SC_JOB_CONTROL:
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#if CONF_IS_DEFINED_SET (_POSIX_JOB_CONTROL)
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return _POSIX_JOB_CONTROL;
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#else
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return -1;
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#endif
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case _SC_SAVED_IDS:
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#if CONF_IS_DEFINED_SET (_POSIX_SAVED_IDS)
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return 1;
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#else
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return -1;
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#endif
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case _SC_REALTIME_SIGNALS:
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#if CONF_IS_DEFINED_SET (_POSIX_REALTIME_SIGNALS)
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return _POSIX_REALTIME_SIGNALS;
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#else
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return -1;
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#endif
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case _SC_PRIORITY_SCHEDULING:
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#if CONF_IS_DEFINED_SET (_POSIX_PRIORITY_SCHEDULING)
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return _POSIX_PRIORITY_SCHEDULING;
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#else
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return -1;
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#endif
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case _SC_TIMERS:
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#if CONF_IS_DEFINED_SET (_POSIX_TIMERS)
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return _POSIX_TIMERS;
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#else
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return -1;
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#endif
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case _SC_ASYNCHRONOUS_IO:
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#if CONF_IS_DEFINED_SET (_POSIX_ASYNCHRONOUS_IO)
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return _POSIX_ASYNCHRONOUS_IO;
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#else
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return -1;
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#endif
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case _SC_PRIORITIZED_IO:
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#if CONF_IS_DEFINED_SET (_POSIX_PRIORITIZED_IO)
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return _POSIX_PRIORITIZED_IO;
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#else
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return -1;
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#endif
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case _SC_SYNCHRONIZED_IO:
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#if CONF_IS_DEFINED_SET (_POSIX_SYNCHRONIZED_IO)
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return _POSIX_SYNCHRONIZED_IO;
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#else
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return -1;
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#endif
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case _SC_FSYNC:
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#if CONF_IS_DEFINED_SET (_POSIX_FSYNC)
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return _POSIX_FSYNC;
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#else
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return -1;
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#endif
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case _SC_MAPPED_FILES:
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#if CONF_IS_DEFINED_SET (_POSIX_MAPPED_FILES)
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return _POSIX_MAPPED_FILES;
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#else
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return -1;
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#endif
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case _SC_MEMLOCK:
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#if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK)
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return _POSIX_MEMLOCK;
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#else
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return -1;
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#endif
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case _SC_MEMLOCK_RANGE:
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#if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK_RANGE)
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return _POSIX_MEMLOCK_RANGE;
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#else
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return -1;
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#endif
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case _SC_MEMORY_PROTECTION:
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#if CONF_IS_DEFINED_SET (_POSIX_MEMORY_PROTECTION)
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return _POSIX_MEMORY_PROTECTION;
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#else
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return -1;
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#endif
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case _SC_MESSAGE_PASSING:
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#if CONF_IS_DEFINED_SET (_POSIX_MESSAGE_PASSING)
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return _POSIX_MESSAGE_PASSING;
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#else
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return -1;
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#endif
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case _SC_SEMAPHORES:
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#if CONF_IS_DEFINED_SET (_POSIX_SEMAPHORES)
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return _POSIX_SEMAPHORES;
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#else
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return -1;
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#endif
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case _SC_SHARED_MEMORY_OBJECTS:
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#if CONF_IS_DEFINED_SET (_POSIX_SHARED_MEMORY_OBJECTS)
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return _POSIX_SHARED_MEMORY_OBJECTS;
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#else
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return -1;
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#endif
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case _SC_VERSION:
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return _POSIX_VERSION;
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case _SC_PAGESIZE:
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return __getpagesize ();
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case _SC_AIO_LISTIO_MAX:
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#ifdef AIO_LISTIO_MAX
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return AIO_LISTIO_MAX;
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#else
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return -1;
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#endif
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case _SC_AIO_MAX:
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#ifdef AIO_MAX
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return AIO_MAX;
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#else
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return -1;
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#endif
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case _SC_AIO_PRIO_DELTA_MAX:
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#ifdef AIO_PRIO_DELTA_MAX
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return AIO_PRIO_DELTA_MAX;
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#else
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return -1;
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#endif
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case _SC_DELAYTIMER_MAX:
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#ifdef DELAYTIMER_MAX
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return DELAYTIMER_MAX;
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#else
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return -1;
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#endif
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case _SC_MQ_OPEN_MAX:
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#ifdef MQ_OPEN_MAX
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return MQ_OPEN_MAX;
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#else
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return -1;
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#endif
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case _SC_MQ_PRIO_MAX:
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#ifdef MQ_PRIO_MAX
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return MQ_PRIO_MAX;
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#else
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return -1;
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#endif
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case _SC_RTSIG_MAX:
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#ifdef RTSIG_MAX
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return RTSIG_MAX;
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#else
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return -1;
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#endif
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case _SC_SEM_NSEMS_MAX:
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#ifdef SEM_NSEMS_MAX
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return SEM_NSEMS_MAX;
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#else
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return -1;
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#endif
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case _SC_SEM_VALUE_MAX:
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#ifdef SEM_VALUE_MAX
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return SEM_VALUE_MAX;
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#else
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return -1;
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#endif
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case _SC_SIGQUEUE_MAX:
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#ifdef SIGQUEUE_MAX
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return SIGQUEUE_MAX;
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#else
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return -1;
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#endif
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case _SC_TIMER_MAX:
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#ifdef TIMER_MAX
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return TIMER_MAX;
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#else
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return -1;
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#endif
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case _SC_BC_BASE_MAX:
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#ifdef BC_BASE_MAX
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return BC_BASE_MAX;
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#else
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return -1;
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#endif
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case _SC_BC_DIM_MAX:
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#ifdef BC_DIM_MAX
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return BC_DIM_MAX;
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#else
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return -1;
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#endif
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case _SC_BC_SCALE_MAX:
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#ifdef BC_SCALE_MAX
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return BC_SCALE_MAX;
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#else
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return -1;
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#endif
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case _SC_BC_STRING_MAX:
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#ifdef BC_STRING_MAX
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return BC_STRING_MAX;
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#else
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return -1;
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#endif
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case _SC_COLL_WEIGHTS_MAX:
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#ifdef COLL_WEIGHTS_MAX
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return COLL_WEIGHTS_MAX;
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#else
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return -1;
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#endif
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case _SC_EXPR_NEST_MAX:
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#ifdef EXPR_NEST_MAX
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return EXPR_NEST_MAX;
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#else
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return -1;
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#endif
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case _SC_LINE_MAX:
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#ifdef LINE_MAX
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return LINE_MAX;
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#else
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return -1;
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#endif
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case _SC_RE_DUP_MAX:
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#ifdef RE_DUP_MAX
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return RE_DUP_MAX;
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#else
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return -1;
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#endif
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case _SC_CHARCLASS_NAME_MAX:
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#ifdef CHARCLASS_NAME_MAX
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return CHARCLASS_NAME_MAX;
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#else
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return -1;
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#endif
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case _SC_PII:
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#if CONF_IS_DEFINED_SET (_POSIX_PII)
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return 1;
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#else
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return -1;
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#endif
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case _SC_PII_XTI:
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#if CONF_IS_DEFINED_SET (_POSIX_PII_XTI)
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return 1;
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#else
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return -1;
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#endif
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case _SC_PII_SOCKET:
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#if CONF_IS_DEFINED_SET (_POSIX_PII_SOCKET)
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return 1;
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#else
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return -1;
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#endif
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case _SC_PII_INTERNET:
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#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET)
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return 1;
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#else
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return -1;
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#endif
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case _SC_PII_OSI:
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#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI)
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return 1;
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#else
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return -1;
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#endif
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case _SC_POLL:
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#if CONF_IS_DEFINED_SET (_POSIX_POLL)
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return 1;
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#else
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return -1;
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#endif
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case _SC_SELECT:
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#if CONF_IS_DEFINED_SET (_POSIX_SELECT)
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return 1;
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#else
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return -1;
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#endif
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/* The same as _SC_IOV_MAX. */
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case _SC_UIO_MAXIOV:
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#ifdef UIO_MAXIOV
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return UIO_MAXIOV;
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#else
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return -1;
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#endif
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case _SC_PII_INTERNET_STREAM:
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#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_STREAM)
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return 1;
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#else
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return -1;
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#endif
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case _SC_PII_INTERNET_DGRAM:
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#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_DGRAM)
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return 1;
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#else
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return -1;
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#endif
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case _SC_PII_OSI_COTS:
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|
#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_COTS)
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return 1;
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#else
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return -1;
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#endif
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case _SC_PII_OSI_CLTS:
|
|
#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_CLTS)
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return 1;
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#else
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return -1;
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|
#endif
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|
case _SC_PII_OSI_M:
|
|
#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_M)
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return 1;
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#else
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|
return -1;
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|
#endif
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|
|
case _SC_T_IOV_MAX:
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|
#ifdef _T_IOV_MAX
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|
return _T_IOV_MAX;
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|
#else
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|
return -1;
|
|
#endif
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|
|
|
case _SC_2_VERSION:
|
|
return _POSIX2_VERSION;
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|
|
case _SC_2_C_BIND:
|
|
#ifdef _POSIX2_C_BIND
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|
return _POSIX2_C_BIND;
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|
#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:
|
|
return __get_pthread_stack_min ();
|
|
|
|
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 <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;
|
|
|
|
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
|
|
|
|
case _SC_SIGSTKSZ:
|
|
#ifdef SIGSTKSZ
|
|
return SIGSTKSZ;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_MINSIGSTKSZ:
|
|
#ifdef MINSIGSTKSZ
|
|
return MINSIGSTKSZ;
|
|
#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_t64 st;
|
|
long int ret = __stat64_time64 (name, &st) >= 0 ? 1 : -1;
|
|
|
|
__set_errno (save_errno);
|
|
return ret;
|
|
}
|
|
#endif
|