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/*
* Copyright (c) 2009-2011, 2013, 2017-2018 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
*/
#include <config.h>
#ifndef HAVE_NANOSLEEP
#include <sys/types.h>
#include <sys/time.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif /* HAVE_SYS_SELECT_H */
#include <time.h>
#include <errno.h>
#include "sudo_compat.h"
#include "sudo_util.h"
int
sudo_nanosleep(const struct timespec *ts, struct timespec *rts)
{
struct timeval timeout, endtime, now;
int rval;
if (ts->tv_sec == 0 && ts->tv_nsec < 1000) {
timeout.tv_sec = 0;
timeout.tv_usec = 1;
} else {
TIMESPEC_TO_TIMEVAL(&timeout, ts);
}
if (rts != NULL) {
if (gettimeofday(&endtime, NULL) == -1)
return -1;
sudo_timevaladd(&endtime, &timeout, &endtime);
}
rval = select(0, NULL, NULL, NULL, &timeout);
if (rts != NULL && rval == -1 && errno == EINTR) {
if (gettimeofday(&now, NULL) == -1)
return -1;
sudo_timevalsub(&endtime, &now, &endtime);
TIMEVAL_TO_TIMESPEC(&endtime, rts);
}
return rval;
}
#endif /* HAVE_NANOSLEEP */
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