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Add crypt_get_old_volume_key_size API.

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It allows to get former (old) volume key size
from LUKS2 device in reencryption state when
there's at least one keyslot containing encrypted
volume key.
This commit is contained in:
Ondrej Kozina
2025-05-16 13:49:37 +02:00
committed by Milan Broz
parent 3dcb532bd3
commit 4e94c8d809
6 changed files with 73 additions and 0 deletions
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13
lib/setup.c
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@@ -6413,6 +6413,19 @@ int crypt_get_volume_key_size(struct crypt_device *cd)
return 0;
}
int crypt_get_old_volume_key_size(struct crypt_device *cd)
{
int r = _onlyLUKS2(cd, CRYPT_CD_QUIET,
CRYPT_REQUIREMENT_ONLINE_REENCRYPT | CRYPT_REQUIREMENT_OPAL);
if (r < 0)
return 0;
r = LUKS2_get_old_volume_key_size(&cd->u.luks2.hdr);
return r < 0 ? 0 : r;
}
int crypt_get_hw_encryption_key_size(struct crypt_device *cd)
{
if (!cd || !isLUKS2(cd->type))