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NIIBE Yutaka 804a77edd9 agent: Simplify agent_popup_message_stop.
* agent/call-pinentry.c (agent_popup_message_stop): Just kill it.

--

By checking if it's alive or not, we can lower a risk of sending
SIGINT to a wrong process on unusual condition when PID is re-used to
a different process.

That's true, however, since it's alive usually, simply sending SIGINT
is enough here.

Note that here is a race condition for detecting if process is active
or not;  A process can die just after being detected alive.

Moreover, when the process of pinentry accidentally died already, it
should have caused return of assuan_transact and the thread of
popup_message_thread likely already set popup_finished=1.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2018-11-14 10:45:15 +09:00
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