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cryptoloop: add a deprecation warning

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Support for cryptoloop has been officially marked broken and deprecated
in favor of dm-crypt (which supports the same broken algorithms if
needed) in Linux 2.6.4 (released in March 2004), and support for it has
been entirely removed from losetup in util-linux 2.23 (released in April
2013).  Add a warning and a deprecation schedule.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210827163250.255325-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-08-27 18:32:50 +02:00 committed by Jens Axboe
parent 3375dca0b5
commit 222013f9ac
2 changed files with 4 additions and 2 deletions
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4
drivers/block/Kconfig
View File

@ -213,7 +213,7 @@ config BLK_DEV_LOOP_MIN_COUNT
dynamically allocated with the /dev/loop-control interface.
config BLK_DEV_CRYPTOLOOP
tristate "Cryptoloop Support"
tristate "Cryptoloop Support (DEPRECATED)"
select CRYPTO
select CRYPTO_CBC
depends on BLK_DEV_LOOP
@ -225,7 +225,7 @@ config BLK_DEV_CRYPTOLOOP
WARNING: This device is not safe for journaled file systems like
ext3 or Reiserfs. Please use the Device Mapper crypto module
instead, which can be configured to be on-disk compatible with the
cryptoloop device.
cryptoloop device. cryptoloop support will be removed in Linux 5.16.
source "drivers/block/drbd/Kconfig"

2
drivers/block/cryptoloop.c
View File

@ -189,6 +189,8 @@ init_cryptoloop(void)
if (rc)
printk(KERN_ERR "cryptoloop: loop_register_transfer failed\n");
else
pr_warn("the cryptoloop driver has been deprecated and will be removed in in Linux 5.16\n");
return rc;
}