diff options
author | David Herrmann <dh.herrmann@gmail.com> | 2013-09-17 17:39:55 +0200 |
---|---|---|
committer | Lennart Poettering <lennart@poettering.net> | 2013-09-17 11:30:44 -0500 |
commit | e8b212fe56f7f4e1778474777a7a2959244d0047 (patch) | |
tree | b3d30b51e14d95cbda6245ee96b04e7a781f6b21 /src/login/logind-dbus.c | |
parent | 718d006a63f773c42106494e823250c48942cf08 (diff) |
logind: add infrastructure to watch busnames
If we want to track bus-names to allow exclusive resource-access, we need
a way to get notified when a bus-name is gone. We make logind watch for
NameOwnerChanged dbus events and check whether the name is currently
watched. If it is, we remove it from the watch-list (notification for
other objects can be added in follow-up patches).
Diffstat (limited to 'src/login/logind-dbus.c')
-rw-r--r-- | src/login/logind-dbus.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c index d052e74789..5decf8114c 100644 --- a/src/login/logind-dbus.c +++ b/src/login/logind-dbus.c @@ -2459,6 +2459,23 @@ DBusHandlerResult bus_message_filter( HASHMAP_FOREACH(session, m->sessions, i) session_add_to_gc_queue(session); } + + } else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) { + const char *name, *old, *new; + char *key; + + if (!dbus_message_get_args(message, &error, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_STRING, &old, + DBUS_TYPE_STRING, &new, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse NameOwnerChanged message: %s", bus_error_message(&error)); + goto finish; + } + + if (*old && !*new && (key = hashmap_remove(m->busnames, old))) { + free(key); + } } finish: |