This ports a lot of manual code over to sigprocmask_many() and friends.
Also, we now consistly check for sigprocmask() failures with
assert_se(), since the call cannot realistically fail unless there's a
programming error.
Also encloses a few sd_event_add_signal() calls with (void) when we
ignore the return values for it knowingly.
return r;
}
-int sigprocmask_many(int how, ...) {
+int sigprocmask_many(int how, sigset_t *old, ...) {
va_list ap;
sigset_t ss;
int r;
if (r < 0)
return r;
- if (sigprocmask(how, &ss, NULL) < 0)
+ if (sigprocmask(how, &ss, old) < 0)
return -errno;
return 0;
int sigaction_many(const struct sigaction *sa, ...);
int sigset_add_many(sigset_t *ss, ...);
-int sigprocmask_many(int how, ...);
+int sigprocmask_many(int how, sigset_t *old, ...);
const char *signal_to_string(int i) _const_;
int signal_from_string(const char *s) _pure_;
if (r < 0)
return r;
- r = sigprocmask_many(SIG_BLOCK, SIGTERM, SIGQUIT, SIGINT, SIGWINCH, SIGCHLD, -1);
+ r = sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGQUIT, SIGINT, SIGWINCH, SIGCHLD, -1);
if (r < 0)
return r;
/* Block SIGTERM, so that we know that it won't get lost in
* the child */
- if (sigemptyset(&ss) < 0 ||
- sigaddset(&ss, SIGTERM) < 0 ||
- sigprocmask(SIG_BLOCK, &ss, &old_ss) < 0)
- goto fail;
+ assert_se(sigprocmask_many(SIG_BLOCK, &old_ss, SIGTERM, -1) >= 0);
parent_pid = getpid();
handle = NULL;
/* Unblock SIGTERM again in the parent */
- if (sigprocmask(SIG_SETMASK, &old_ss, NULL) < 0)
- goto fail;
+ assert_se(sigprocmask(SIG_SETMASK, &old_ss, NULL) >= 0);
/* We close the log explicitly here, since the PAM modules
* might have opened it, but we don't want this fd around. */
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+ (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
r = tar_export_new(&export, event, on_tar_finished, event);
if (r < 0)
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+ (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
r = raw_export_new(&export, event, on_raw_finished, event);
if (r < 0)
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+ (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
r = tar_import_new(&import, event, arg_image_root, on_tar_finished, event);
if (r < 0)
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+ (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
r = raw_import_new(&import, event, arg_image_root, on_raw_finished, event);
if (r < 0)
goto finish;
}
- assert_se(sigprocmask_many(SIG_BLOCK, SIGCHLD, -1) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
r = manager_new(&m);
if (r < 0) {
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+ (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
r = tar_pull_new(&pull, event, arg_image_root, on_tar_finished, event);
if (r < 0)
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+ (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
r = raw_pull_new(&pull, event, arg_image_root, on_raw_finished, event);
if (r < 0)
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
+ (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
r = dkr_pull_new(&pull, event, arg_dkr_index_url, arg_image_root, on_dkr_finished, event);
if (r < 0)
**********************************************************************/
static int setup_signals(RemoteServer *s) {
- sigset_t mask;
int r;
assert(s);
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, -1);
- assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+ assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, -1) >= 0);
r = sd_event_add_signal(s->events, &s->sigterm_event, SIGTERM, NULL, s);
if (r < 0)
}
static int setup_signals(Uploader *u) {
- sigset_t mask;
int r;
assert(u);
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, -1);
- assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+ assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, -1) >= 0);
r = sd_event_add_signal(u->events, &u->sigterm_event, SIGTERM, dispatch_sigterm, u);
if (r < 0)
}
static int setup_signals(Server *s) {
- sigset_t mask;
int r;
assert(s);
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1);
- assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+ assert(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1) >= 0);
r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s);
if (r < 0)
if (r < 0)
return r;
- r = sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1);
+ r = sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1);
if (r < 0)
return r;
if (r < 0)
return r;
- r = sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1);
+ r = sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1);
if (r < 0)
return r;
goto error;
}
- r = sigprocmask_many(SIG_BLOCK, SIGINT, SIGQUIT, SIGTERM, SIGWINCH, SIGCHLD, -1);
+ r = sigprocmask_many(SIG_BLOCK, NULL, SIGINT, SIGQUIT, SIGTERM, SIGWINCH, SIGCHLD, -1);
if (r < 0) {
log_error_errno(r, "error: sigprocmask_many() (%d): %m", r);
goto error;
static int signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
sd_event_source *p = NULL;
- sigset_t ss;
pid_t pid;
assert_se(s);
assert_se(userdata == INT_TO_PTR('e'));
- assert_se(sigemptyset(&ss) >= 0);
- assert_se(sigaddset(&ss, SIGCHLD) >= 0);
- assert_se(sigprocmask(SIG_BLOCK, &ss, NULL) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
pid = fork();
assert_se(pid >= 0);
static int defer_handler(sd_event_source *s, void *userdata) {
sd_event_source *p = NULL;
- sigset_t ss;
assert_se(s);
assert_se(userdata == INT_TO_PTR('d'));
- assert_se(sigemptyset(&ss) >= 0);
- assert_se(sigaddset(&ss, SIGUSR1) >= 0);
- assert_se(sigprocmask(SIG_BLOCK, &ss, NULL) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGUSR1, -1) >= 0);
+
assert_se(sd_event_add_signal(sd_event_source_get_event(s), &p, SIGUSR1, signal_handler, INT_TO_PTR('e')) >= 0);
assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
raise(SIGUSR1);
assert_se(sd_event_source_set_prepare(z, prepare_handler) >= 0);
/* Test for floating event sources */
- assert_se(sigprocmask_many(SIG_BLOCK, SIGRTMIN+1, -1) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+1, -1) >= 0);
assert_se(sd_event_add_signal(e, NULL, SIGRTMIN+1, NULL, NULL) >= 0);
assert_se(write(a[1], &ch, 1) >= 0);
return -EINVAL;
}
- r = ignore_signals(SIGRTMIN + 1, -1);
- if (r < 0)
- return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
-
- r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
- if (r < 0)
- return log_error_errno(r, "Cannot block SIGRTMIN: %m");
+ assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
if (r < 0)
if (r < 0)
return bus_log_parse_error(r);
- sigprocmask_many(SIG_BLOCK, SIGWINCH, SIGTERM, SIGINT, -1);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGWINCH, SIGTERM, SIGINT, -1) >= 0);
log_info("Connected to machine %s. Press ^] three times within 1s to exit session.", argv[1]);
if (r < 0)
return bus_log_parse_error(r);
- sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
if (!arg_quiet)
log_info("Enqueued transfer job %u. Press C-c to continue download in background.", id);
* check stays in. */
mkdir_label("/run/systemd/machines", 0755);
- assert_se(sigprocmask_many(SIG_BLOCK, SIGCHLD, -1) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
m = manager_new();
if (!m) {
if (arg_quiet)
log_set_max_level(LOG_WARNING);
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
r = manager_new(&m, arg_interfaces, arg_ignore, arg_timeout);
if (r < 0) {
if (r < 0)
goto out;
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
r = manager_new(&m);
if (r < 0) {
int r, n_fd_passed, loop_nr = -1;
char veth_name[IFNAMSIZ];
bool secondary = false, remove_subvol = false;
- sigset_t mask, mask_chld;
+ sigset_t mask_chld;
pid_t pid = 0;
int ret = EXIT_SUCCESS;
union in_addr_union exposed = {};
log_info("Spawning container %s on %s.\nPress ^] three times within 1s to kill container.",
arg_machine, arg_image ?: arg_directory);
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGCHLD, SIGWINCH, SIGTERM, SIGINT, -1);
- assert_se(sigprocmask(SIG_BLOCK, &mask, NULL) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, SIGWINCH, SIGTERM, SIGINT, -1) >= 0);
assert_se(sigemptyset(&mask_chld) == 0);
assert_se(sigaddset(&mask_chld, SIGCHLD) == 0);
if (r < 0)
goto finish;
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
r = manager_new(&m);
if (r < 0) {
if (master >= 0) {
_cleanup_(pty_forward_freep) PTYForward *forward = NULL;
_cleanup_event_unref_ sd_event *event = NULL;
- sigset_t mask;
char last_char = 0;
r = sd_event_default(&event);
if (r < 0)
return log_error_errno(r, "Failed to get event loop: %m");
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGWINCH, SIGTERM, SIGINT, -1);
- assert_se(sigprocmask(SIG_BLOCK, &mask, NULL) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGWINCH, SIGTERM, SIGINT, -1) >= 0);
- sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
- sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
+ (void) sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
if (!arg_quiet)
log_info("Running as unit %s.\nPress ^] three times within 1s to disconnect TTY.", service);
assert(_passphrases);
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, -1);
- assert_se(sigprocmask(SIG_BLOCK, &mask, &oldmask) == 0);
+ assert_se(sigemptyset(&mask) >= 0);
+ assert_se(sigset_add_many(&mask, SIGINT, SIGTERM, -1) >= 0);
+ assert_se(sigprocmask(SIG_BLOCK, &mask, &oldmask) >= 0);
mkdir_p_label("/run/systemd/ask-password", 0755);
log_parse_environment();
log_open();
- assert_se(sigprocmask_many(SIG_BLOCK, SIGCHLD, -1) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
/* Oh, there're ugly races in the TTY layer regarding HUP vs IN. Turns
* out they appear only 10% of the time. I fixed all of them and
event = udev_event_new(dev);
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) >= 0);
/* do what devtmpfs usually provides us */
if (udev_device_get_devnode(dev) != NULL) {
if (setrlimit(RLIMIT_NPROC, &RLIMIT_MAKE_CONST(2)) < 0)
log_warning_errno(errno, "Failed to lower RLIMIT_NPROC to 2: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
r = manager_new(&m);
if (r < 0) {
if (inotify_add_watch(notify, "/run/systemd/ask-password", IN_CLOSE_WRITE|IN_MOVED_TO) < 0)
return -errno;
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, -1);
- assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+ assert_se(sigemptyset(&mask) >= 0);
+ assert_se(sigset_add_many(&mask, SIGINT, SIGTERM, -1) >= 0);
+ assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) >= 0);
signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
if (signal_fd < 0)
udev_watch_restore(manager->udev);
/* block and listen to all signals on signalfd */
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) >= 0);
r = sd_event_default(&manager->event);
if (r < 0)