You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1.8 KiB
47 lines
1.8 KiB
7 years ago
|
From a5626cd14a7f27538033e1e110f9a827c0189526 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Krzysztof Kotlenga <k.kotlenga@sims.pl>
|
||
|
|
Date: Thu, 24 Sep 2015 00:34:51 +0200
|
||
|
|
Subject: [PATCH] sd-event: fix prepare priority queue comparison function
|
||
|
|
|
||
|
|
Otherwise a disabled event source can get swapped with an enabled one
|
||
|
|
and cause a severe sd-event malfunction.
|
||
|
|
|
||
|
|
http://lists.freedesktop.org/archives/systemd-devel/2015-September/034356.html
|
||
|
|
|
||
|
|
Cherry-picked from: 8046c4576a68977a1089d2585866bfab8152661b
|
||
|
|
Resolves: #1266479
|
||
|
|
---
|
||
|
|
src/libsystemd/sd-event/sd-event.c | 12 ++++++------
|
||
|
|
1 file changed, 6 insertions(+), 6 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/src/libsystemd/sd-event/sd-event.c b/src/libsystemd/sd-event/sd-event.c
|
||
|
|
index c6350be9f..1f1e6fe91 100644
|
||
|
|
--- a/src/libsystemd/sd-event/sd-event.c
|
||
|
|
+++ b/src/libsystemd/sd-event/sd-event.c
|
||
|
|
@@ -231,6 +231,12 @@ static int prepare_prioq_compare(const void *a, const void *b) {
|
||
|
|
assert(x->prepare);
|
||
|
|
assert(y->prepare);
|
||
|
|
|
||
|
|
+ /* Enabled ones first */
|
||
|
|
+ if (x->enabled != SD_EVENT_OFF && y->enabled == SD_EVENT_OFF)
|
||
|
|
+ return -1;
|
||
|
|
+ if (x->enabled == SD_EVENT_OFF && y->enabled != SD_EVENT_OFF)
|
||
|
|
+ return 1;
|
||
|
|
+
|
||
|
|
/* Move most recently prepared ones last, so that we can stop
|
||
|
|
* preparing as soon as we hit one that has already been
|
||
|
|
* prepared in the current iteration */
|
||
|
|
@@ -239,12 +245,6 @@ static int prepare_prioq_compare(const void *a, const void *b) {
|
||
|
|
if (x->prepare_iteration > y->prepare_iteration)
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
- /* Enabled ones first */
|
||
|
|
- if (x->enabled != SD_EVENT_OFF && y->enabled == SD_EVENT_OFF)
|
||
|
|
- return -1;
|
||
|
|
- if (x->enabled == SD_EVENT_OFF && y->enabled != SD_EVENT_OFF)
|
||
|
|
- return 1;
|
||
|
|
-
|
||
|
|
/* Lower priority values first */
|
||
|
|
if (x->priority < y->priority)
|
||
|
|
return -1;
|