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authorDavid Herrmann <dh.herrmann@gmail.com>2015-07-16 14:35:15 +0200
committerDavid Herrmann <dh.herrmann@gmail.com>2015-07-16 15:01:52 +0200
commit1af5f746d569f013595bb16ca113741ee306f04a (patch)
tree1d2b7f24f9cd9c8819d6dfbf7959d89049206be2 /src
parent4f1d774135ae8c6fedb3a9dee45efe1fb42ac389 (diff)
sd-bus: destination-matches cannot match NameOwnerChanged
Make sure we don't install NameOwnerChanged matches if the caller passed a destination='' match (except if it is the broadcast address). Per spec, all NameOwnerChanged signals are broadcasts. Only the NameLost/NameAcquired signals are unicasts, but those are never received through sd-bus. Instead, the bus-proxy synthesizes them and it already installs proper matches for them.
Diffstat (limited to 'src')
-rw-r--r--src/libsystemd/sd-bus/bus-control.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/libsystemd/sd-bus/bus-control.c b/src/libsystemd/sd-bus/bus-control.c
index a38c5c50fc..526e1aa89f 100644
--- a/src/libsystemd/sd-bus/bus-control.c
+++ b/src/libsystemd/sd-bus/bus-control.c
@@ -1345,6 +1345,10 @@ int bus_add_match_internal_kernel(
else if (r > 0)
sz += ALIGN8(offsetof(struct kdbus_item, id) + sizeof(uint64_t));
+ /* if not a broadcast, it cannot be a name-change */
+ if (r <= 0 || dst_id != KDBUS_DST_ID_BROADCAST)
+ matches_name_change = false;
+
break;
}