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authorLennart Poettering <lennart@poettering.net>2016-01-26 22:34:46 +0100
committerLennart Poettering <lennart@poettering.net>2016-01-27 02:22:58 +0100
commit0c5eb0562abec6f845f07c30b2ad2515900ec1e5 (patch)
tree10a05b9191642ce96812a96ed53031b9338f3528 /src/test/test-signal-util.c
parentfccd4b67b5fd296cb5840d1b8e0ea8455cb6a1ed (diff)
nss: block various signals while running NSS lookups
Let's make sure our poll() calls don't get interrupted where they shouldn't (SIGALRM, ...), but allow them to be interrupted where they should (SIGINT, ...). Fixes #1965
Diffstat (limited to 'src/test/test-signal-util.c')
-rw-r--r--src/test/test-signal-util.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/test/test-signal-util.c b/src/test/test-signal-util.c
new file mode 100644
index 0000000000..3083501ce9
--- /dev/null
+++ b/src/test/test-signal-util.c
@@ -0,0 +1,49 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2016 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "signal-util.h"
+
+static void test_block_signals(void) {
+ sigset_t ss;
+
+ assert_se(sigprocmask(0, NULL, &ss) >= 0);
+
+ assert_se(sigismember(&ss, SIGUSR1) == 0);
+ assert_se(sigismember(&ss, SIGALRM) == 0);
+ assert_se(sigismember(&ss, SIGVTALRM) == 0);
+
+ {
+ BLOCK_SIGNALS(SIGUSR1, SIGVTALRM);
+
+ assert_se(sigprocmask(0, NULL, &ss) >= 0);
+ assert_se(sigismember(&ss, SIGUSR1) == 1);
+ assert_se(sigismember(&ss, SIGALRM) == 0);
+ assert_se(sigismember(&ss, SIGVTALRM) == 1);
+
+ }
+
+ assert_se(sigprocmask(0, NULL, &ss) >= 0);
+ assert_se(sigismember(&ss, SIGUSR1) == 0);
+ assert_se(sigismember(&ss, SIGALRM) == 0);
+ assert_se(sigismember(&ss, SIGVTALRM) == 0);
+}
+
+int main(int argc, char *argv[]) {
+ test_block_signals();
+}