everywhere: port everything to sigprocmask_many() and friends

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.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/basic/signal-util.h b/src/basic/signal-util.h
index 9dc8a28726..5e6eb50b07 100644
--- a/src/basic/signal-util.h
+++ b/src/basic/signal-util.h
@@ -33,7 +33,7 @@ int default_signals(int sig, ...);
 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_;