gpg agent lockup fix: Interrupt main loop when active_connections_value==0

Otherwise, if this happens (in a parallel thread) after the main loop
found shutdown_pending and checked active_connections>=0, the main
loop could enter a select which would never wake up.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
MORE

diff --git a/agent/gpg-agent.c b/agent/gpg-agent.c
index 836b31724f674b790df1c788e0939e818eadc114..121bb0ed4f6a7e8b9d3486c4855e3811776db57e 100644 (file)
--- a/agent/gpg-agent.c
+++ b/agent/gpg-agent.c
@@ -2029,6 +2029,8 @@ adjust_agent_active_connections (int delta)
 {
   lock_active_connections();
   active_connections_value += delta;
+  if (active_connections_value == 0)
+    interrupt_main_thread_loop ();
   unlock_active_connections();
 }