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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup POSIXAPI
*
* @brief Get Configurable System Variables
*/
/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <time.h>
#include <unistd.h>
#include <errno.h>
#include <rtems.h>
#include <rtems/seterr.h>
#include <rtems/libio_.h>
#include <sys/param.h>
/*
* 4.8.1 Get Configurable System Variables, P1003.1b-1993, p. 95
*/
long sysconf(
int name
)
{
switch ( name ) {
case _SC_CLK_TCK:
return (long) rtems_clock_get_ticks_per_second();
case _SC_OPEN_MAX:
return rtems_libio_number_iops;
case _SC_GETPW_R_SIZE_MAX:
return 1024;
case _SC_PAGESIZE:
return PAGE_SIZE;
case _SC_SYMLOOP_MAX:
return RTEMS_FILESYSTEM_SYMLOOP_MAX;
case _SC_NPROCESSORS_CONF:
return (long) rtems_configuration_get_maximum_processors();
case _SC_NPROCESSORS_ONLN:
return (long) rtems_scheduler_get_processor_maximum();
case _SC_POSIX_26_VERSION:
return (long) _POSIX_26_VERSION;
default:
rtems_set_errno_and_return_minus_one( EINVAL );
}
}
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