From 0f3bdf54a5def3706298bc4e741fb78690af6572 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Ernesto=20A=2E=20Fern=C3=A1ndez?=
 <ernesto.mnd.fernandez@gmail.com>
Date: Mon, 17 Jul 2017 18:42:41 +0200
Subject: [PATCH] reiserfs: preserve i_mode if __reiserfs_set_acl() fails
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commit fcea8aed91f53b51f9b943dc01f12d8aa666c720 upstream.

When changing a file's acl mask, reiserfs_set_acl() will first set the
group bits of i_mode to the value of the mask, and only then set the
actual extended attribute representing the new acl.

If the second part fails (due to lack of space, for example) and the
file had no acl attribute to begin with, the system will from now on
assume that the mask permission bits are actual group permission bits,
potentially granting access to the wrong users.

Prevent this by only changing the inode mode after the acl has been set.

Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Reading git-format-patch failed