# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1709155866 -3600
# Node ID 93b4ce0115f0b53c0ca6e00c7b80176db53e20d2
# Parent  5c9df28a57bb009c8842859dc260da1bd9ce2e5d
util.signal: Fail signalfd() if unable to change signal mask

By aborting early, the failure should be brought to the attention
somehow.

diff -r 5c9df28a57bb -r 93b4ce0115f0 util-src/signal.c
--- a/util-src/signal.c	Wed Feb 28 22:24:09 2024 +0100
+++ b/util-src/signal.c	Wed Feb 28 22:31:06 2024 +0100
@@ -384,7 +384,10 @@
 	sigemptyset(&sfd->mask);
 	sigaddset(&sfd->mask, luaL_checkinteger(L, 1));
 
-	sigprocmask(SIG_BLOCK, &sfd->mask, NULL); /* TODO check err */
+	if (sigprocmask(SIG_BLOCK, &sfd->mask, NULL) != 0) {
+		lua_pushnil(L);
+		return 1;
+	};
 
 	sfd->fd = signalfd(-1, &sfd->mask, SFD_NONBLOCK);