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Commit 9bd87b6e authored by Neeraj Soni's avatar Neeraj Soni Committed by Pruthvi Kurada
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md: dm-default-key: Override dun value for selected bios 



Over ride dun values for file encrypted bios only when 'set_dun' flag
is set, file system is ext4 and content-encryption mode is
FS_CRYPT_PRIVATE.

Change-Id: I3340f29c71dbfb6006450415a718b661e49a6ed0
Signed-off-by: default avatarNeeraj Soni <neersoni@codeaurora.org>
parent 43ae4899

drivers/md/dm-default-key.c

+7 −4
Original line number Diff line number Diff line
@@ -391,11 +391,14 @@ static int default_key_map(struct dm_target *ti, struct bio *bio) 
	if (WARN_ON_ONCE(dun[0] > dkc->max_dun))

		return DM_MAPIO_KILL;



	if (!bio_has_crypt_ctx(bio))

	if (!bio_has_crypt_ctx(bio)) {

		bio_crypt_set_ctx(bio, &dkc->key, dun, GFP_NOIO);



		if (dkc->set_dun)

			default_key_map_dun(bio, dun);

	} else {

		if (dkc->set_dun && bio->bi_crypt_context->is_ext4)

			default_key_map_dun(bio, dun);

	}



	return DM_MAPIO_REMAPPED;

}