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integritysetup: add recalculate-reset flag.

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The new dm-integrity option in kernel 5.13 can restart
recalculation from the beginning of the device.
It can be used to change the integrity checksum function.

This patch adds support to libcryptsetup for this flag
and adds --integrity-recalculate-rest option to integritysetup.

Fixes: #631.
This commit is contained in:
Milan Broz
2021-03-30 21:39:52 +02:00
parent 530bcfd4fa
commit ec3a9746a9
8 changed files with 44 additions and 2 deletions
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lib/utils_dm.h
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@@ -73,6 +73,7 @@ static inline uint32_t act2dmflags(uint32_t act_flags)
#define DM_VERITY_PANIC_CORRUPTION_SUPPORTED (1 << 24) /* dm-verity panic on corruption */
#define DM_CRYPT_NO_WORKQUEUE_SUPPORTED (1 << 25) /* dm-crypt suppot for bypassing workqueues */
#define DM_INTEGRITY_FIX_HMAC_SUPPORTED (1 << 26) /* hmac covers also superblock */
#define DM_INTEGRITY_RESET_RECALC_SUPPORTED (1 << 27) /* dm-integrity automatic recalculation supported */
typedef enum { DM_CRYPT = 0, DM_VERITY, DM_INTEGRITY, DM_LINEAR, DM_ERROR, DM_ZERO, DM_UNKNOWN } dm_target_type;
enum tdirection { TARGET_SET = 1, TARGET_QUERY };