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Transfer persistent flags to new LUKS2 header.

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This commit is contained in:
Ondrej Kozina
2018-02-23 12:52:58 +01:00
committed by Milan Broz
parent 471f781022
commit 5f26f8a03d
1 changed files with 36 additions and 3 deletions
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37
src/cryptsetup_reencrypt.c
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@@ -581,7 +581,7 @@ static int luks2_transfer_tokens(struct reenc_ctx *rc)
if (crypt_init(&cd_old, rc->header_file_tmp) ||
crypt_load(cd_old, CRYPT_LUKS2, NULL))
return -EINVAL;
goto out;
if (crypt_init(&cd_new, rc->header_file_new) ||
crypt_load(cd_new, CRYPT_LUKS2, NULL))
@@ -638,6 +638,35 @@ out:
return r;
}
static int luks2_transfer_flags(struct reenc_ctx *rc)
{
int r = -EINVAL;
uint32_t flags;
struct crypt_device *cd_old = NULL, *cd_new = NULL;
if (crypt_init(&cd_old, rc->header_file_org) ||
crypt_load(cd_old, CRYPT_LUKS2, NULL))
goto out;
if (crypt_init(&cd_new, rc->header_file_new) ||
crypt_load(cd_new, CRYPT_LUKS2, NULL))
goto out;
if ((r = crypt_persistent_flags_get(cd_old, CRYPT_FLAGS_ACTIVATION, &flags)))
log_err(_("Failed to read activation flags from backup header.\n"));
else if ((r = crypt_persistent_flags_set(cd_new, CRYPT_FLAGS_ACTIVATION, flags)))
log_err(_("Failed to write activation flags to new header.\n"));
else if ((r = crypt_persistent_flags_get(cd_old, CRYPT_FLAGS_REQUIREMENTS, &flags)))
log_err(_("Failed to read requirements from backup header.\n"));
else if ((r = crypt_persistent_flags_set(cd_new, CRYPT_FLAGS_REQUIREMENTS, flags)))
log_err(_("Failed to read requirements from backup header.\n"));
out:
crypt_free(cd_old);
crypt_free(cd_new);
return r;
}
static int backup_luks_headers(struct reenc_ctx *rc)
{
struct crypt_device *cd = NULL;
@@ -713,8 +742,12 @@ static int backup_luks_headers(struct reenc_ctx *rc)
rc->type,
isLUKS2(rc->type) ? (void*)&params2 : (void*)&params);
if (!r && isLUKS2(rc->type))
if (r || !isLUKS2(rc->type))
goto out;
r = luks2_transfer_tokens(rc);
if (!r)
r = luks2_transfer_flags(rc);
out:
crypt_free(cd);