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authorColin Walters <walters@verbum.org>2012-10-30 15:38:32 -0400
committerLennart Poettering <lennart@poettering.net>2012-11-20 19:12:19 +0100
commit1a37b9b9043ef83e9900e460a9a1fccced3acf89 (patch)
tree3db1771012ce53e9e8d79958609bdd857c81b363 /TODO
parentd23965a64eb5c2c97b839dc2e3e79fc1613994f1 (diff)
dbus-common: Add helper method to handle no-reply messages
[Tested in latest gnome-ostree; if accepted, I'll look at a followup patch which fixes the other dbus_connection_send(reply, ...) calls besides logind] DBus messages can have a flag NO_REPLY associated that means "I don't need a reply". This is for efficiency reasons - for one-off requests that can't return an error, etc. However, it's up to users to manually check dbus_message_get_no_reply() from a message. libdbus will happily send out a reply if you don't. Unfortunately, doing so is not just less efficient - it also triggers a security error, for complex reasons. This is something that will eventually be fixed in dbus, but it's also correct to handle it in client applications. This new helper API is slightly nicer in that you don't have to pass NULL to say you don't want a reply serial for your reply. This patch also tweaks logind to use the API - there are more areas of the code that need this treatment too.
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