[PATCH] fs: ubifs: set s_uuid in super block to support ima/evm uuid options

[Juergen Borleis]

From: Steffen Trumtrar <s.trumt...@pengutronix.de>

This is required to provide uuid based integrity functionality for:
ima_policy (fsuuid option) and the 'evmctl' command ('--uuid' option).

Signed-off-by: Steffen Trumtrar <s.trumt...@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rem...@pengutronix.de>
Acked-by: Juergen Borleis <j...@pengutronix.de>
---
 fs/ubifs/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index cb3acfb7dd1f..b990baed4de0 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -2231,6 +2231,7 @@ static int ubifs_fill_super(struct super_block *sb, void 
*data, int silent)
                err = -ENOMEM;
                goto out_umount;
        }
+       memcpy(&sb->s_uuid, &c->uuid, sizeof(c->uuid));
 
        mutex_unlock(&c->umount_mutex);
        return 0;
-- 
2.20.1