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#include <signal.h>
#include "imapfilter.h"
void signal_handler(int sig);
/*
* Catch signals that cause program's termination.
*/
void
catch_signals(void)
{
signal(SIGINT, signal_handler);
signal(SIGQUIT, signal_handler);
signal(SIGTERM, signal_handler);
}
/*
* Release signals and reset them to default action.
*/
void
release_signals(void)
{
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
signal(SIGTERM, SIG_DFL);
}
/*
* Signal handler for signals that cause termination of program.
*/
void
signal_handler(int sig)
{
release_signals();
fatal(ERROR_SIGNAL, "killed by signal %d\n", sig);
}
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