linux-kernel - [PATCH v2 2/2] gfs2: Invalide security labels of inodes that go invalid

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Date:	Sun,  4 Oct 2015 21:19:41 +0200
From:	Andreas Gruenbacher <agruenba@...hat.com>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christoph Hellwig <hch@...radead.org>
Cc:	Steven Whitehouse <swhiteho@...hat.com>,
	Bob Peterson <rpeterso@...hat.com>, cluster-devel@...hat.com
Subject: [PATCH v2 2/2] gfs2: Invalide security labels of inodes that go invalid

When gfs2 releases the glock of an inode, it must invalidate all
information cached for that inode, including the page cache and acls.  Use
the new security_inode_invalidate_secctx hook to also invalidate security
labels in that case.  These items will be reread from disk when needed
after reacquiring the glock.

Signed-off-by: Andreas Gruenbacher <agruenba@...hat.com>
Cc: Steven Whitehouse <swhiteho@...hat.com>
Cc: Bob Peterson <rpeterso@...hat.com>
Cc: cluster-devel@...hat.com
---
 fs/gfs2/glops.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 1f6c9c3..0833076 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -13,6 +13,7 @@
 #include <linux/gfs2_ondisk.h>
 #include <linux/bio.h>
 #include <linux/posix_acl.h>
+#include <linux/security.h>
 
 #include "gfs2.h"
 #include "incore.h"
@@ -262,6 +263,7 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags)
 		if (ip) {
 			set_bit(GIF_INVALID, &ip->i_flags);
 			forget_all_cached_acls(&ip->i_inode);
+			security_inode_invalidate_secctx(&ip->i_inode);
 			gfs2_dir_hash_inval(ip);
 		}
 	}
-- 
2.5.0

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