agent: Also evict cached items via a timer.

* agent/cache.c (agent_cache_housekeeping): New func.
* agent/gpg-agent.c (handle_tick): Call it.
--

This change mitigates the risk of having cached items in a post mortem
dump.

GnuPG-bug-id: 3829
Signed-off-by: Werner Koch <[email protected]>

1 files changed, 20 insertions, 0 deletions

diff --git a/agent/cache.c b/agent/cache.c
index 80d5f8d1e..ed5c97cd2 100644
--- a/agent/cache.c
+++ b/agent/cache.c
@@ -259,6 +259,26 @@ housekeeping (void)
 
 
 void
+agent_cache_housekeeping (void)
+{
+  int res;
+
+  if (DBG_CACHE)
+    log_debug ("agent_cache_housekeeping\n");
+
+  res = npth_mutex_lock (&cache_lock);
+  if (res)
+    log_fatal ("failed to acquire cache mutex: %s\n", strerror (res));
+
+  housekeeping ();
+
+  res = npth_mutex_unlock (&cache_lock);
+  if (res)
+    log_fatal ("failed to release cache mutex: %s\n", strerror (res));
+}
+
+
+void
 agent_flush_cache (void)
 {
   ITEM r;