- signal(SIGINT, handle_signal);
- signal(SIGQUIT, handle_signal);
- signal(SIGTERM, handle_signal);
- signal(SIGHUP, handle_signal);
- signal(SIGUSR1, handle_signal);
- signal(SIGUSR2, handle_signal);
+ sigset_t set;
+ int ret = read(sig_pipe_fds[0], &set, sizeof(sigset_t));
+ if(ret != sizeof(sigset_t))
+ sigemptyset(&set);
+
+ sigaddset(&set, sig);
+ ret = write(sig_pipe_fds[1], &set, sizeof(sigset_t));
+}
+
+
+int signal_init()
+{
+ if(pipe(sig_pipe_fds)) {
+ log_printf(ERROR, "signal handling init failed (pipe error: %s)", strerror(errno));
+ return -1;
+ }
+
+ int i;
+ for(i=0; i<2; ++i) {
+ int fd_flags = fcntl(sig_pipe_fds[i], F_GETFL);
+ if(fd_flags == -1) {
+ log_printf(ERROR, "signal handling init failed (pipe fd[%d] read flags error: %s)", i, strerror(errno));
+ return -1;
+ }
+ if(fcntl(sig_pipe_fds[i], F_SETFL, fd_flags | O_NONBLOCK) == -1){
+ log_printf(ERROR, "signal handling init failed (pipe fd[%d] write flags error: %s)", i, strerror(errno));
+ return -1;
+ }
+ }
+
+ struct sigaction act;
+ act.sa_handler = sig_handler;
+ sigfillset(&act.sa_mask);
+ act.sa_flags = 0;
+
+ if((sigaction(SIGINT, &act, NULL) < 0) ||
+ (sigaction(SIGQUIT, &act, NULL) < 0) ||
+ (sigaction(SIGTERM, &act, NULL) < 0) ||
+ (sigaction(SIGHUP, &act, NULL) < 0) ||
+ (sigaction(SIGUSR1, &act, NULL) < 0) ||
+ (sigaction(SIGUSR2, &act, NULL) < 0)) {
+
+ log_printf(ERROR, "signal handling init failed (sigaction error: %s)", strerror(errno));
+ close(sig_pipe_fds[0]);
+ close(sig_pipe_fds[1]);
+ }
+
+ return sig_pipe_fds[0];