static void signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) { pa_log_info(_("Got signal %s."), pa_sig2str(sig)); switch (sig) { #ifdef SIGUSR1 case SIGUSR1: pa_module_load(userdata, "module-cli", NULL); break; #endif #ifdef SIGUSR2 case SIGUSR2: pa_module_load(userdata, "module-cli-protocol-unix", NULL); break; #endif #ifdef SIGHUP case SIGHUP: { char *c = pa_full_status_string(userdata); pa_log_notice("%s", c); pa_xfree(c); return; } #endif case SIGINT: case SIGTERM: default: pa_log_info(_("Exiting.")); m->quit(m, 1); break; } }
/* Print a warning messages in case that the given signal is not * blocked or trapped */ void pa_check_signal_is_blocked(int sig) { #ifdef HAVE_SIGACTION struct sigaction sa; sigset_t set; /* If POSIX threads are supported use thread-aware * pthread_sigmask() function, to check if the signal is * blocked. Otherwise fall back to sigprocmask() */ #ifdef HAVE_PTHREAD if (pthread_sigmask(SIG_SETMASK, NULL, &set) < 0) { #endif if (sigprocmask(SIG_SETMASK, NULL, &set) < 0) { pa_log("sigprocmask(): %s", pa_cstrerror(errno)); return; } #ifdef HAVE_PTHREAD } #endif if (sigismember(&set, sig)) return; /* Check whether the signal is trapped */ if (sigaction(sig, NULL, &sa) < 0) { pa_log("sigaction(): %s", pa_cstrerror(errno)); return; } if (sa.sa_handler != SIG_DFL) return; pa_log_warn("%s is not trapped. This might cause malfunction!", pa_sig2str(sig)); #else /* HAVE_SIGACTION */ pa_log_warn("%s might not be trapped. This might cause malfunction!", pa_sig2str(sig)); #endif }