From d2e1ef4f8f82121f93efc01f6258347ff21c7717 Mon Sep 17 00:00:00 2001
From: John Johansen <john.johansen@canonical.com>
Date: Fri, 25 Jul 2014 04:02:08 -0700
Subject: apparmor: fix disconnected bind mnts reconnection

commit f2e561d190da7ff5ee265fa460e2d7f753dddfda upstream.

Bind mounts can fail to be properly reconnected when PATH_CONNECT is
specified. Ensure that when PATH_CONNECT is specified the path has
a root.

BugLink: http://bugs.launchpad.net/bugs/1319984

Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Seth Arnold <seth.arnold@canonical.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
 security/apparmor/path.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/security/apparmor/path.c b/security/apparmor/path.c
index e91ffee80..ebc778092 100644
--- a/security/apparmor/path.c
+++ b/security/apparmor/path.c
@@ -141,7 +141,10 @@ static int d_namespace_path(struct path *path, char *buf, int buflen,
 			error = -EACCES;
 			if (*res == '/')
 				*name = res + 1;
-		}
+		} else if (*res != '/')
+			/* CONNECT_PATH with missing root */
+			error = prepend(name, *name - buf, "/", 1);
+
 	}
 
 out:
-- 
cgit v1.2.3