Because there are already 3 targets used, the current detection
based only on dm-crypt is not sufficient.
Add new definition of dm_flags that allows separate target version detect.
Note: we do not want to load targets explicitly; instead, we repeats
detection after operation that could trigger target load.
If dm_flags() call fails, then the target is not yet loaded.
The dm-integrity target is intended to be used for authenticated
encryption through LUKS and dm-crypt.
It can be used in standalone as well; for this use case there
is a simple configuration utility called integritysetup
(similar to veritysetup to dm-verity).
This patch adds veritysetup support for these Linux kernel dm-verity options:
--ignore-corruption - dm-verity just logs detected corruption
--restart-on-corruption - dm-verity restarts the kernel if corruption is detected
If the options above are not specified, default behaviour for dm-verity remains.
Default is that I/O operation fails with I/O error if corrupted block is detected.
--ignore-zero-blocks - Instructs dm-verity to not verify blocks that are expected
to contain zeroes and always return zeroes directly instead.
NOTE that these options could have serious security or functional impacts,
do not use them without assessing the risks!
The patch adds the two options
--perf-same_cpu_crypt
--perf-submit_from_crypt_cpus
that set the same named options inside dmcrypt
(available in Linux kernel 3.20 and later).
Allocate loop device late (only when real block device needed).
Rework underlying device/file access functions.
Move all device (and ioctl) access to utils_device.c.
Allows using file where appropriate without allocation loop device.
* Do not allow key retrieval while suspended (key could be wiped).
* Do not allow suspend for non-LUKS devices.
* Support retries and timeout parameters for luksSuspend.
Add luksSuspend/Resume test.
git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@574 36d66b0a-2a48-0410-832c-cd162a569da5
* Add shared flag to libcryptsetup api.
* Fix plain crypt format parameters to include size option (API change).
git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@559 36d66b0a-2a48-0410-832c-cd162a569da5
