From: Shawn Routhier <sar@isc.org>
Date: Mon, 19 May 2014 20:22:03 +0000 (-0700)
Subject: [master] When writing a client lease file use the fsync call
X-Git-Tag: v4_3_1b1~13
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8a2e40cff8aa99c00bd391e3d6928622d99a213e;p=thirdparty%2Fdhcp.git

[master] When writing a client lease file use the fsync call
---

diff --git a/RELNOTES b/RELNOTES
index fa6172da4..ce66eec23 100644
--- a/RELNOTES
+++ b/RELNOTES
@@ -152,6 +152,10 @@ by Eric Young (eay@cryptsoft.com).
   lease file and the DUID will be written out to the main lease file.
   [ISC-Bugs #34886]
 
+- Have the client fsync the lease file to avoid lease corruption if the
+  client hibernates or otherwise shuts down.
+  [ISC-Bugs #35894]
+
 			Changes since 4.3.0rc1
 
 - None
diff --git a/client/dhclient.c b/client/dhclient.c
index cd82070dd..6d348c1ef 100644
--- a/client/dhclient.c
+++ b/client/dhclient.c
@@ -1271,7 +1271,7 @@ void bind_lease (client)
 	/* Write out the new lease if it has been long enough. */
 	if (!client->last_write ||
 	    (cur_time - client->last_write) >= MIN_LEASE_WRITE)
-		write_client_lease(client, client->new, 0, 0);
+		write_client_lease(client, client->new, 0, 1);
 
 	/* Replace the old active lease with the new one. */
 	if (client->active)