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qcow2: Use QCryptoBlockCreateOptions in qcow2_co_create()

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Instead of passing the encryption format name and the QemuOpts down, use
the QCryptoBlockCreateOptions contained in BlockdevCreateOptions.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Kevin Wolf 2018-01-10 17:55:16 +01:00
parent e1d74bc6c6
commit 60900b7bd9
1 changed files with 45 additions and 17 deletions
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62
block/qcow2.c
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@ -2449,13 +2449,10 @@ static int qcow2_crypt_method_from_format(const char *encryptfmt)
}
}
static int qcow2_set_up_encryption(BlockDriverState *bs, const char *encryptfmt,
QemuOpts *opts, Error **errp)
static QCryptoBlockCreateOptions *
qcow2_parse_encryption(const char *encryptfmt, QemuOpts *opts, Error **errp)
{
BDRVQcow2State *s = bs->opaque;
QCryptoBlockCreateOptions *cryptoopts = NULL;
QCryptoBlock *crypto = NULL;
int ret = -EINVAL;
QDict *options, *encryptopts;
int fmt;
@ -2478,10 +2475,31 @@ static int qcow2_set_up_encryption(BlockDriverState *bs, const char *encryptfmt,
error_setg(errp, "Unknown encryption format '%s'", encryptfmt);
break;
}
if (!cryptoopts) {
ret = -EINVAL;
goto out;
QDECREF(encryptopts);
return cryptoopts;
}
static int qcow2_set_up_encryption(BlockDriverState *bs,
QCryptoBlockCreateOptions *cryptoopts,
Error **errp)
{
BDRVQcow2State *s = bs->opaque;
QCryptoBlock *crypto = NULL;
int fmt, ret;
switch (cryptoopts->format) {
case Q_CRYPTO_BLOCK_FORMAT_LUKS:
fmt = QCOW_CRYPT_LUKS;
break;
case Q_CRYPTO_BLOCK_FORMAT_QCOW:
fmt = QCOW_CRYPT_AES;
break;
default:
error_setg(errp, "Crypto format not supported in qcow2");
return -EINVAL;
}
s->crypt_method_header = fmt;
crypto = qcrypto_block_create(cryptoopts, "encrypt.",
@ -2489,8 +2507,7 @@ static int qcow2_set_up_encryption(BlockDriverState *bs, const char *encryptfmt,
qcow2_crypto_hdr_write_func,
bs, errp);
if (!crypto) {
ret = -EINVAL;
goto out;
return -EINVAL;
}
ret = qcow2_update_header(bs);
@ -2499,10 +2516,9 @@ static int qcow2_set_up_encryption(BlockDriverState *bs, const char *encryptfmt,
goto out;
}
ret = 0;
out:
QDECREF(encryptopts);
qcrypto_block_free(crypto);
qapi_free_QCryptoBlockCreateOptions(cryptoopts);
return ret;
}
@ -2768,8 +2784,7 @@ static uint64_t qcow2_opt_get_refcount_bits_del(QemuOpts *opts, int version,
}
static int coroutine_fn
qcow2_co_create(BlockdevCreateOptions *create_options, QemuOpts *opts,
const char *encryptfmt, Error **errp)
qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
{
BlockdevCreateOptionsQcow2 *qcow2_opts;
QDict *options;
@ -2999,8 +3014,8 @@ qcow2_co_create(BlockdevCreateOptions *create_options, QemuOpts *opts,
}
/* Want encryption? There you go. */
if (encryptfmt) {
ret = qcow2_set_up_encryption(blk_bs(blk), encryptfmt, opts, errp);
if (qcow2_opts->has_encrypt) {
ret = qcow2_set_up_encryption(blk_bs(blk), qcow2_opts->encrypt, errp);
if (ret < 0) {
goto out;
}
@ -3058,6 +3073,7 @@ static int coroutine_fn qcow2_co_create_opts(const char *filename, QemuOpts *opt
int version;
uint64_t refcount_bits;
char *encryptfmt = NULL;
QCryptoBlockCreateOptions *cryptoopts = NULL;
BlockDriverState *bs = NULL;
Error *local_err = NULL;
int ret;
@ -3074,6 +3090,7 @@ static int coroutine_fn qcow2_co_create_opts(const char *filename, QemuOpts *opt
ret = -EINVAL;
goto finish;
}
encryptfmt = qemu_opt_get_del(opts, BLOCK_OPT_ENCRYPT_FORMAT);
if (encryptfmt) {
if (qemu_opt_get(opts, BLOCK_OPT_ENCRYPT)) {
@ -3085,6 +3102,14 @@ static int coroutine_fn qcow2_co_create_opts(const char *filename, QemuOpts *opt
} else if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ENCRYPT, false)) {
encryptfmt = g_strdup("aes");
}
if (encryptfmt) {
cryptoopts = qcow2_parse_encryption(encryptfmt, opts, errp);
if (cryptoopts == NULL) {
ret = -EINVAL;
goto finish;
}
}
cluster_size = qcow2_opt_get_cluster_size_del(opts, &local_err);
if (local_err) {
error_propagate(errp, local_err);
@ -3158,6 +3183,8 @@ static int coroutine_fn qcow2_co_create_opts(const char *filename, QemuOpts *opt
.backing_file = backing_file,
.has_backing_fmt = (backing_fmt != NULL),
.backing_fmt = backing_drv,
.has_encrypt = (encryptfmt != NULL),
.encrypt = cryptoopts,
.has_cluster_size = true,
.cluster_size = cluster_size,
.has_preallocation = true,
@ -3168,7 +3195,7 @@ static int coroutine_fn qcow2_co_create_opts(const char *filename, QemuOpts *opt
.refcount_bits = refcount_bits,
},
};
ret = qcow2_co_create(&create_options, opts, encryptfmt, errp);
ret = qcow2_co_create(&create_options, errp);
if (ret < 0) {
goto finish;
}
@ -3176,6 +3203,7 @@ static int coroutine_fn qcow2_co_create_opts(const char *filename, QemuOpts *opt
finish:
bdrv_unref(bs);
qapi_free_QCryptoBlockCreateOptions(cryptoopts);
g_free(backing_file);
g_free(backing_fmt);
g_free(encryptfmt);