void SignalHandler::signalled(int sock) {
char signal;
read(sock, &signal, 1);
switch(signal) {
case 'I': emit sigint(); break;
case 'T': emit sigterm(); break;
case 'H': emit sighup(); break;
}
}
void generic_handler(int signal){
switch (signal) {
case SIGINT:
sigint();
break;
case SIGQUIT:
sigquit();
break;
case SIGHUP:
sighup();
break;
case SIGSEGV:
sigsegv();
break;
case SIGTERM:
sigterm();
break;
}
}
static int start()
{
int lockfd;
int pipe3fd[2];
char temp_buf;
lockfd=ll_daemon_start(LOCKFILE);
if (lockfd <= 0)
{
close(3);
return (lockfd);
}
if (lockfd == 3)
{
lockfd=dup(lockfd); /* Get it out of the way */
if (lockfd < 0)
{
perror("dup");
return (-1);
}
}
if (reserve3(pipe3fd))
{
return (1);
}
fcntl(lockfd, F_SETFD, FD_CLOEXEC);
fcntl(pipe3fd[0], F_SETFD, FD_CLOEXEC);
fcntl(3, F_SETFD, FD_CLOEXEC); /* For the logger */
clog_start_logger("courierfilter");
clog_open_stderr(0);
fcntl(3, F_SETFD, 0);
signal(SIGPIPE, SIG_IGN);
dup2(2, 1);
sighup();
close(0);
open("/dev/null", O_RDONLY);
close(3);
if (read(pipe3fd[0], &temp_buf, 1) != 1)
; /* ignore */
close(pipe3fd[0]);
signal(SIGHUP, sighuphandler);
signal(SIGTERM, sigtermhandler);
ll_daemon_started(PIDFILE, lockfd);
while (!sigterm_received)
{
if (sighup_received)
{
sighup_received=0;
if (reserve3(pipe3fd) == 0)
{
sighup();
close(3);
close(pipe3fd[0]);
}
signal(SIGHUP, sighuphandler);
}
#if HAVE_SIGSUSPEND
{
sigset_t ss;
sigemptyset(&ss);
sigsuspend(&ss);
}
#else
sigpause(0);
#endif
}
while (filterlist)
kill1filter(&filterlist);
unlink(PIDFILE);
return (0);
}
