mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-05 03:01:05 +00:00
367 lines
6.2 KiB
C
367 lines
6.2 KiB
C
/* Copyright (C) 1993,1995,1996,1997,2002,2004 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Brendan Kehoe (brendan@zen.org).
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <time.h>
|
|
#include <sysconfig.h>
|
|
|
|
extern int __sysconfig (int);
|
|
|
|
/* Get the value of the system variable NAME. */
|
|
long int
|
|
__sysconf (name)
|
|
int name;
|
|
{
|
|
switch (name)
|
|
{
|
|
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 -1;
|
|
#endif
|
|
|
|
case _SC_CLK_TCK:
|
|
return __sysconfig (_CONFIG_CLK_TCK);
|
|
|
|
case _SC_NGROUPS_MAX:
|
|
#ifdef NGROUPS_MAX
|
|
return NGROUPS_MAX;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
/* Both of these are looking for _CONFIG_OPEN_FILES. */
|
|
case _SC_OPEN_MAX:
|
|
case _SC_STREAM_MAX:
|
|
return __sysconfig (_CONFIG_OPEN_FILES);
|
|
|
|
case _SC_TZNAME_MAX:
|
|
return __tzname_max ();
|
|
|
|
case _SC_JOB_CONTROL:
|
|
#ifdef _POSIX_JOB_CONTROL
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_SAVED_IDS:
|
|
#ifdef _POSIX_SAVED_IDS
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_REALTIME_SIGNALS:
|
|
#ifdef _POSIX_REALTIME_SIGNALS
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_PRIORITY_SCHEDULING:
|
|
#ifdef _POSIX_PRIORITY_SCHEDULING
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_TIMERS:
|
|
#ifdef _POSIX_TIMERS
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_ASYNCHRONOUS_IO:
|
|
#ifdef _POSIX_ASYNCHRONOUS_IO
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_PRIORITIZED_IO:
|
|
#ifdef _POSIX_PRIORITIZED_IO
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_SYNCHRONIZED_IO:
|
|
#ifdef _POSIX_SYNCHRONIZED_IO
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_FSYNC:
|
|
#ifdef _POSIX_FSYNC
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_MAPPED_FILES:
|
|
#ifdef _POSIX_MAPPED_FILES
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_MEMLOCK:
|
|
#ifdef _POSIX_MEMLOCK
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_MEMLOCK_RANGE:
|
|
#ifdef _POSIX_MEMLOCK_RANGE
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_MEMORY_PROTECTION:
|
|
#ifdef _POSIX_MEMORY_PROTECTION
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_MESSAGE_PASSING:
|
|
#ifdef _POSIX_MESSAGE_PASSING
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_SEMAPHORES:
|
|
#ifdef _POSIX_SEMAPHORES
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_SHARED_MEMORY_OBJECTS:
|
|
#ifdef _POSIX_SHARED_MEMORY_OBJECTS
|
|
return 1;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_VERSION:
|
|
return _POSIX_VERSION;
|
|
|
|
case _SC_PAGESIZE:
|
|
return __sysconfig (_CONFIG_PAGESIZE);
|
|
|
|
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_EQUIV_CLASS_MAX:
|
|
#ifdef EQUIV_CLASS_MAX
|
|
return EQUIV_CLASS_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_2_VERSION:
|
|
/* This is actually supposed to return the version
|
|
of the 1003.2 utilities on the system {POSIX2_VERSION}. */
|
|
return _POSIX2_C_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_FORT_DEV:
|
|
#ifdef _POSIX2_FORT_DEV
|
|
return _POSIX2_FORT_DEV;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _SC_2_SW_DEV:
|
|
#ifdef _POSIX2_SW_DEV
|
|
return _POSIX2_SW_DEV;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
weak_alias (__sysconf, sysconf)
|
|
libc_hidden_def (__sysconf)
|