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systemd/SOURCES/0957-test-add-test-case-for...

66 lines
2.2 KiB

From 2fcb71007e5137e1be4a16fb24783ff329313ebf Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 9 Nov 2021 00:15:43 +0100
Subject: [PATCH] test: add test case for self-destroy inotify handler
(cherry picked from commit 035daf73fbfa05e5abf049bd9385fc0994ab5672)
Related: #2211358
---
src/libsystemd/sd-event/test-event.c | 36 ++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/src/libsystemd/sd-event/test-event.c b/src/libsystemd/sd-event/test-event.c
index 9135b22839..df3de1bfb0 100644
--- a/src/libsystemd/sd-event/test-event.c
+++ b/src/libsystemd/sd-event/test-event.c
@@ -588,6 +588,40 @@ static void test_ratelimit(void) {
assert_se(expired == 0);
}
+static int inotify_self_destroy_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) {
+ sd_event_source **p = userdata;
+
+ assert_se(ev);
+ assert_se(p);
+ assert_se(*p == s);
+
+ assert_se(FLAGS_SET(ev->mask, IN_ATTRIB));
+
+ assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0);
+
+ *p = sd_event_source_unref(*p); /* here's what we actually intend to test: we destroy the event
+ * source from inside the event source handler */
+ return 1;
+}
+
+static void test_inotify_self_destroy(void) {
+ _cleanup_(sd_event_source_unrefp) sd_event_source *s = NULL;
+ _cleanup_(sd_event_unrefp) sd_event *e = NULL;
+ char path[] = "/tmp/inotifyXXXXXX";
+ _cleanup_close_ int fd = -1;
+
+ /* Tests that destroying an inotify event source from its own handler is safe */
+
+ assert_se(sd_event_default(&e) >= 0);
+
+ fd = mkostemp_safe(path);
+ assert_se(fd >= 0);
+ assert_se(sd_event_add_inotify_fd(e, &s, fd, IN_ATTRIB, inotify_self_destroy_handler, &s) >= 0);
+ fd = safe_close(fd);
+ assert_se(unlink(path) >= 0); /* This will trigger IN_ATTRIB because link count goes to zero */
+ assert_se(sd_event_loop(e) >= 0);
+}
+
int main(int argc, char *argv[]) {
log_set_max_level(LOG_DEBUG);
@@ -602,5 +636,7 @@ int main(int argc, char *argv[]) {
test_ratelimit();
+ test_inotify_self_destroy();
+
return 0;
}