From 6bad2cd171c7d81e9a43ccc79e91009438c948ac Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 10 May 2007 17:07:30 +0000
Subject: 	* nscd/connections.c (sighup_pending): New variable. 
 (nscd_run): If sighup_pending, prune all 3 caches. 	(sighup_handler):
 Don't prune caches here, rather just set 	sighup_pending flag.

---
 nscd/connections.c | 46 ++++++++++++++++++++++++++++++++++------------
 1 file changed, 34 insertions(+), 12 deletions(-)

(limited to 'nscd')

diff --git a/nscd/connections.c b/nscd/connections.c
index 4e01b31..c3f9d0e 100644
--- a/nscd/connections.c
+++ b/nscd/connections.c
@@ -68,6 +68,7 @@ static gid_t *server_groups;
 # define NGROUPS 32
 #endif
 static int server_ngroups;
+static volatile int sighup_pending;
 
 static pthread_attr_t attr;
 
@@ -1363,6 +1364,10 @@ nscd_run (void *p)
 	      if (readylist == NULL && to == ETIMEDOUT)
 		{
 		  --nready;
+
+		  if (sighup_pending)
+		    goto sighup_prune;
+
 		  pthread_mutex_unlock (&readylist_lock);
 		  goto only_prune;
 		}
@@ -1372,6 +1377,34 @@ nscd_run (void *p)
 	    pthread_cond_wait (&readylist_cond, &readylist_lock);
 	}
 
+      if (sighup_pending)
+	{
+	  --nready;
+	  pthread_cond_signal (&readylist_cond);
+	sighup_prune:
+	  sighup_pending = 0;
+	  pthread_mutex_unlock (&readylist_lock);
+
+	  /* Prune the password database.  */
+	  if (dbs[pwddb].enabled)
+	    prune_cache (&dbs[pwddb], LONG_MAX, -1);
+
+	  /* Prune the group database.  */
+	  if (dbs[grpdb].enabled)
+	    prune_cache (&dbs[grpdb], LONG_MAX, -1);
+
+	  /* Prune the host database.  */
+	  if (dbs[hstdb].enabled)
+	    prune_cache (&dbs[hstdb], LONG_MAX, -1);
+
+	  /* Re-locking.  */
+	  pthread_mutex_lock (&readylist_lock);
+
+	  /* One more thread available.  */
+	  ++nready;
+	  continue;
+	}
+
       struct fdlist *it = readylist->next;
       if (readylist->next == readylist)
 	/* Just one entry on the list.  */
@@ -1952,16 +1985,5 @@ finish_drop_privileges (void)
 void
 sighup_handler (int signum)
 {
-  /* Prune the password database.  */
-  if (dbs[pwddb].enabled)
-    prune_cache (&dbs[pwddb], LONG_MAX, -1);
-    
-  /* Prune the group database.  */
-  if (dbs[grpdb].enabled)
-    prune_cache (&dbs[grpdb], LONG_MAX, -1);
-
-  /* Prune the host database.  */
-  if (dbs[hstdb].enabled)
-    prune_cache (&dbs[hstdb], LONG_MAX, -1);
+  sighup_pending = 1;
 }
-
-- 
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