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Commit fd2f7e99 authored by Sarthak Kukreti's avatar Sarthak Kukreti Committed by Greg Kroah-Hartman
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dm verity: set DM_TARGET_IMMUTABLE feature flag 



commit 4caae58406f8ceb741603eee460d79bacca9b1b5 upstream.

The device-mapper framework provides a mechanism to mark targets as
immutable (and hence fail table reloads that try to change the target
type). Add the DM_TARGET_IMMUTABLE flag to the dm-verity target's
feature flags to prevent switching the verity target with a different
target type.

Fixes: a4ffc152 ("dm: add verity target")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarSarthak Kukreti <sarthakkukreti@google.com>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f0059735

drivers/md/dm-verity-target.c

+1 −0
Original line number Diff line number Diff line
@@ -1217,6 +1217,7 @@ static int verity_ctr(struct dm_target *ti, unsigned argc, char **argv) 


static struct target_type verity_target = {

	.name		= "verity",

	.features	= DM_TARGET_IMMUTABLE,

	.version	= {1, 5, 0},

	.module		= THIS_MODULE,

	.ctr		= verity_ctr,