/* SPDX-License-Identifier: BSD-2-Clause */
/*
* COPYRIGHT (c) 1989-2010.
* 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 <sys/resource.h>
#include <errno.h>
#include <rtems.h>
#include <rtems/seterr.h>
int getrusage(int who, struct rusage *usage)
{
struct timespec uptime;
struct timeval rtime;
if ( !usage )
rtems_set_errno_and_return_minus_one( EFAULT );
/*
* RTEMS only has a single process so there are no children.
* The single process has been running since the system
* was booted and since there is no distinction between system
* and user time, we will just report the uptime.
*/
if (who == RUSAGE_SELF) {
rtems_clock_get_uptime( &uptime );
rtime.tv_sec = uptime.tv_sec;
rtime.tv_usec = uptime.tv_nsec / 1000;
usage->ru_utime = rtime;
usage->ru_stime = rtime;
return 0;
}
if (who == RUSAGE_CHILDREN) {
rtems_set_errno_and_return_minus_one( ENOSYS );
}
rtems_set_errno_and_return_minus_one( EINVAL );
}
