From: Roy Marples <roy@marples.name>
Date: Wed, 12 Jun 2013 15:21:05 +0000 (+0000)
Subject: Ensure we read the full lease.
X-Git-Tag: v6.0.0~15
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6ce65558f42ff51b7549c62e8e2a751fa446f1a7;p=thirdparty%2Fdhcpcd.git

Ensure we read the full lease.
---

diff --git a/dhcp6.c b/dhcp6.c
index aa93e4d6..08a51a87 100644
--- a/dhcp6.c
+++ b/dhcp6.c
@@ -1572,6 +1572,10 @@ dhcp6_readlease(struct interface *ifp)
 		return -1;
 	bytes = read(fd, state->new, state->new_len);
 	close(fd);
+	if (bytes < (ssize_t)state->new_len) {
+		syslog(LOG_ERR, "%s: read: %m", __func__);
+		goto ex;
+	}
 
 	/* Check to see if the lease is still valid */
 	fd = dhcp6_validatelease(ifp, state->new, state->new_len, NULL);