From 40fa3b1875382eabf9cd4bf4e9b9fca88f705538 Mon Sep 17 00:00:00 2001
From: Michal Schmidt <mschmidt@redhat.com>
Date: Fri, 20 Feb 2015 02:25:16 +0100
Subject: [PATCH] shared: handle unnamed sockets in socket_address_equal()

Make sure we don't inspect sun_path of unnamed sockets.
Since we cannot know if two unnamed sockets' adresses refer to the same
socket, just return false.

(cherry picked from commit 710708a54ccc48e168ad7d4cd401645ef9e2eb14)
(cherry picked from commit 04691e6f814b76ea497d8189b9b77d4c0feff794)
---
 src/shared/socket-util.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/shared/socket-util.c b/src/shared/socket-util.c
index a01d6bc4d..2546c8277 100644
--- a/src/shared/socket-util.c
+++ b/src/shared/socket-util.c
@@ -349,6 +349,10 @@ bool socket_address_equal(const SocketAddress *a, const SocketAddress *b) {
                 break;
 
         case AF_UNIX:
+                if (a->size <= offsetof(struct sockaddr_un, sun_path) ||
+                    b->size <= offsetof(struct sockaddr_un, sun_path))
+                        return false;
+
                 if ((a->sockaddr.un.sun_path[0] == 0) != (b->sockaddr.un.sun_path[0] == 0))
                         return false;