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/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2013 Roy Marples <roy@marples.name>
* All rights reserved
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/time.h>
#include <sys/types.h>
#include <sys/select.h>
#include <limits.h>
#include <poll.h>
#include <signal.h>
#include <unistd.h>
#include "pollts.h"
int
pollts(struct pollfd *restrict fds, nfds_t nfds,
const struct timespec *restrict ts, const sigset_t *restrict sigmask)
{
fd_set read_fds;
nfds_t n;
int maxfd, r;
struct timeval tv;
struct timeval *tvp;
FD_ZERO(&read_fds);
maxfd = 0;
for (n = 0; n < nfds; n++) {
if (fds[n].events & POLLIN) {
FD_SET(fds[n].fd, &read_fds);
if (fds[n].fd > maxfd)
maxfd = fds[n].fd;
}
}
if (ts != NULL) {
TIMESPEC_TO_TIMEVAL(&tv, ts);
tvp = &tv;
} else {
tvp = NULL;
}
r = select(maxfd + 1, &read_fds, NULL, NULL, tvp);
if (r > 0) {
for (n = 0; n < nfds; n++) {
fds[n].revents =
FD_ISSET(fds[n].fd, &read_fds) ? POLLIN : 0;
}
}
return r;
}
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