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/*
* Copyright (c) 2016-2021, OARC, Inc.
* 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.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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 HOLDER 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 "config.h"
#include "sig.h"
#include "log.h"
#include "dumper.h"
#include "pcaps.h"
void setsig(int sig, int oneshot)
{
struct sigaction sa;
memset(&sa, 0, sizeof sa);
if (oneshot) {
sa.sa_handler = sigbreak;
sa.sa_flags = SA_RESETHAND;
} else {
sa.sa_handler = sigclose;
sa.sa_flags = SA_RESTART;
}
if (sigaction(sig, &sa, NULL) < 0) {
logerr("sigaction: %s", strerror(errno));
exit(1);
}
}
void sigclose(int signum)
{
if (0 == last_ts.tv_sec)
gettimeofday(&last_ts, NULL);
if (signum == SIGALRM)
alarm_set = FALSE;
if (dumper_close(last_ts))
breakloop_pcaps();
}
void sigbreak(int signum __attribute__((unused)))
{
logerr("%s: signalled break", ProgramName);
main_exit = TRUE;
breakloop_pcaps();
}
void* sigthread(void* arg)
{
#if HAVE_PTHREAD
sigset_t* set = (sigset_t*)arg;
int sig, err;
while (1) {
if ((err = sigwait(set, &sig))) {
logerr("sigwait: %s", strerror(err));
return 0;
}
switch (sig) {
case SIGALRM:
sigclose(sig);
break;
default:
sigbreak(sig);
break;
}
}
#endif
return 0;
}
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