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| author | Mikulas Patocka <mpatocka@redhat.com> | 2012-03-28 19:43:38 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2012-03-28 19:43:38 +0200 |
| commit | a4ffc152198efba2ed9e6eac0eb97f17bfebce85 (patch) | |
| tree | 1901c86e3f4dbfcc3bd753888951a51430f0cde2 /drivers/md/Kconfig | |
| parent | dm bufio: prefetch (diff) | |
| download | linux-a4ffc152198efba2ed9e6eac0eb97f17bfebce85.tar.xz linux-a4ffc152198efba2ed9e6eac0eb97f17bfebce85.zip | |
dm: add verity target
This device-mapper target creates a read-only device that transparently
validates the data on one underlying device against a pre-generated tree
of cryptographic checksums stored on a second device.
Two checksum device formats are supported: version 0 which is already
shipping in Chromium OS and version 1 which incorporates some
improvements.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Signed-off-by: Will Drewry <wad@chromium.org>
Signed-off-by: Elly Jones <ellyjones@chromium.org>
Cc: Milan Broz <mbroz@redhat.com>
Cc: Olof Johansson <olofj@chromium.org>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/Kconfig')
| -rw-r--r-- | drivers/md/Kconfig | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index 71000078351a..10f122a3a856 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -370,4 +370,24 @@ config DM_FLAKEY ---help--- A target that intermittently fails I/O for debugging purposes. +config DM_VERITY + tristate "Verity target support (EXPERIMENTAL)" + depends on BLK_DEV_DM && EXPERIMENTAL + select CRYPTO + select CRYPTO_HASH + select DM_BUFIO + ---help--- + This device-mapper target creates a read-only device that + transparently validates the data on one underlying device against + a pre-generated tree of cryptographic checksums stored on a second + device. + + You'll need to activate the digests you're going to use in the + cryptoapi configuration. + + To compile this code as a module, choose M here: the module will + be called dm-verity. + + If unsure, say N. + endif # MD |