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authorDavid Herrmann <dh.herrmann@gmail.com>2015-01-08 21:06:14 +0100
committerDavid Herrmann <dh.herrmann@gmail.com>2015-01-08 21:06:14 +0100
commitb864535791844ce4f9437cebefaf3c37b3741b4a (patch)
treee427be9f2ee61762fc7bebe9bf3f655691c1cea0 /src/systemctl/Makefile
parent426bb5ddb8ff122d3e08b0480466718b68485e70 (diff)
bus-proxyd: fix EPERM on replies
Imagine a kdbus peer sending a method-call without EXPECT_REPLY set through the proxy to a dbus1 peer. The proxy turns the missing EXPECT_REPLY flag into a dbus1 NO_REPLY_EXPECTED flag. However, if the receipient ignores that flag (valid dbus1 behavior) and sends a reply, the proxy will try to forward it to the original peer. This will fail with EPERM as the kernel didn't track the reply. We have two options now: Either we ignore EPERM for reply messages, or we track reply-windows in the proxy so we can properly ignore replies if EXPECT_REPLY wasn't set. This commit chose the first option: ignore EPERM for replies. The only down-side is that replies without matching method call will no longer be forwarded by the proxy. This works on dbus1, though. Nobody sane does this, so lets ignore it.
Diffstat (limited to 'src/systemctl/Makefile')
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