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qcrypto-luks: purge unused error codes from open callback 

These values are not used by generic crypto code anyway

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Maxim Levitsky 2019-09-26 00:35:21 +03:00 committed by Daniel P. Berrangé
parent 9d80e59d50
commit 61dd8a9a52
1 changed files with 13 additions and 32 deletions
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45
crypto/block-luks.c
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@ -622,9 +622,7 @@ qcrypto_block_luks_open(QCryptoBlock *block,
{
QCryptoBlockLUKS *luks = NULL;
Error *local_err = NULL;
int ret = 0;
size_t i;
ssize_t rv;
g_autofree uint8_t *masterkey = NULL;
char *ivgen_name, *ivhash_name;
g_autofree char *password = NULL;
@ -648,13 +646,11 @@ qcrypto_block_luks_open(QCryptoBlock *block,
/* Read the entire LUKS header, minus the key material from
* the underlying device */
rv = readfunc(block, 0,
(uint8_t *)&luks->header,
sizeof(luks->header),
opaque,
errp);
if (rv < 0) {
ret = rv;
if (readfunc(block, 0,
(uint8_t *)&luks->header,
sizeof(luks->header),
opaque,
errp) < 0) {
goto fail;
}
@ -675,13 +671,11 @@ qcrypto_block_luks_open(QCryptoBlock *block,
if (memcmp(luks->header.magic, qcrypto_block_luks_magic,
QCRYPTO_BLOCK_LUKS_MAGIC_LEN) != 0) {
error_setg(errp, "Volume is not in LUKS format");
ret = -EINVAL;
goto fail;
}
if (luks->header.version != QCRYPTO_BLOCK_LUKS_VERSION) {
error_setg(errp, "LUKS version %" PRIu32 " is not supported",
luks->header.version);
ret = -ENOTSUP;
goto fail;
}
@ -697,7 +691,6 @@ qcrypto_block_luks_open(QCryptoBlock *block,
*/
ivgen_name = strchr(cipher_mode, '-');
if (!ivgen_name) {
ret = -EINVAL;
error_setg(errp, "Unexpected cipher mode string format %s",
cipher_mode);
goto fail;
@ -715,7 +708,6 @@ qcrypto_block_luks_open(QCryptoBlock *block,
luks->ivgen_hash_alg = qcrypto_block_luks_hash_name_lookup(ivhash_name,
&local_err);
if (local_err) {
ret = -ENOTSUP;
error_propagate(errp, local_err);
goto fail;
}
@ -724,7 +716,6 @@ qcrypto_block_luks_open(QCryptoBlock *block,
luks->cipher_mode = qcrypto_block_luks_cipher_mode_lookup(cipher_mode,
&local_err);
if (local_err) {
ret = -ENOTSUP;
error_propagate(errp, local_err);
goto fail;
}
@ -735,7 +726,6 @@ qcrypto_block_luks_open(QCryptoBlock *block,
luks->header.master_key_len,
&local_err);
if (local_err) {
ret = -ENOTSUP;
error_propagate(errp, local_err);
goto fail;
}
@ -744,7 +734,6 @@ qcrypto_block_luks_open(QCryptoBlock *block,
qcrypto_block_luks_hash_name_lookup(luks->header.hash_spec,
&local_err);
if (local_err) {
ret = -ENOTSUP;
error_propagate(errp, local_err);
goto fail;
}
@ -752,14 +741,12 @@ qcrypto_block_luks_open(QCryptoBlock *block,
luks->ivgen_alg = qcrypto_block_luks_ivgen_name_lookup(ivgen_name,
&local_err);
if (local_err) {
ret = -ENOTSUP;
error_propagate(errp, local_err);
goto fail;
}
if (luks->ivgen_alg == QCRYPTO_IVGEN_ALG_ESSIV) {
if (!ivhash_name) {
ret = -EINVAL;
error_setg(errp, "Missing IV generator hash specification");
goto fail;
}
@ -768,7 +755,6 @@ qcrypto_block_luks_open(QCryptoBlock *block,
luks->ivgen_hash_alg,
&local_err);
if (local_err) {
ret = -ENOTSUP;
error_propagate(errp, local_err);
goto fail;
}
@ -795,7 +781,6 @@ qcrypto_block_luks_open(QCryptoBlock *block,
masterkey,
readfunc, opaque,
errp) < 0) {
ret = -EACCES;
goto fail;
}
@ -813,19 +798,16 @@ qcrypto_block_luks_open(QCryptoBlock *block,
luks->header.master_key_len,
errp);
if (!block->ivgen) {
ret = -ENOTSUP;
goto fail;
}
ret = qcrypto_block_init_cipher(block,
luks->cipher_alg,
luks->cipher_mode,
masterkey,
luks->header.master_key_len,
n_threads,
errp);
if (ret < 0) {
ret = -ENOTSUP;
if (qcrypto_block_init_cipher(block,
luks->cipher_alg,
luks->cipher_mode,
masterkey,
luks->header.master_key_len,
n_threads,
errp) < 0) {
goto fail;
}
}
@ -834,14 +816,13 @@ qcrypto_block_luks_open(QCryptoBlock *block,
block->payload_offset = luks->header.payload_offset_sector *
block->sector_size;
return 0;
fail:
qcrypto_block_free_cipher(block);
qcrypto_ivgen_free(block->ivgen);
g_free(luks);
return ret;
return -1;
}