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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2013 Peter Miller
*
* This program 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 3 of the License, or (at
* your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libexplain/ac/errno.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/output.h>
#include <libexplain/sleep.h>
unsigned int
explain_sleep_or_die(unsigned int seconds)
{
int hold_errno;
unsigned int result;
hold_errno = errno;
errno = 0;
result = explain_sleep_on_error(seconds);
if (errno != 0)
{
explain_output_exit_failure();
}
errno = hold_errno;
return result;
}
unsigned int
explain_sleep_on_error(unsigned int seconds)
{
int hold_errno;
unsigned int result;
hold_errno = errno;
errno = 0;
#ifdef HAVE_SLEEP
result = sleep(seconds);
#else
# if HAVE_NANOSLEEP
{
struct timespec req;
struct timespec rem;
req.tv_sec = seonds;
req.tv_nsec = 0;
explain_nanosleep_on_error(&req, &rem);
return rem.tv_sec;
}
# else
errno = ENOSYS;
result = -1;
# endif
#endif
if (errno != 0)
{
hold_errno = errno;
explain_output_error("%s", explain_errno_sleep(hold_errno, seconds));
errno = hold_errno;
}
errno = hold_errno;
return result;
}
/* vim: set ts=8 sw=4 et : */
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