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storage: Split out a helper for encryption checks

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Split out a helper from virStorageBackendCreateQemuImgCmdFromVol
to check the encryption - soon a new encryption sheriff will be
patroling and that'll mean all sorts of new checks.

Signed-off-by: John Ferlan <jferlan@redhat.com>
This commit is contained in:
John Ferlan 2016-05-25 15:08:49 -04:00
parent a2a7f7ede8
commit 4c6038a35e
1 changed files with 51 additions and 28 deletions
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79
src/storage/storage_backend.c
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@ -1010,6 +1010,53 @@ virStorageBackendCreateQemuImgOpts(char **opts,
return -1;
}
/* virStorageBackendCreateQemuImgCheckEncryption:
* @format: format of file found
* @conn: pointer to connection
* @vol: pointer to volume def
*
* Ensure the proper setup for encryption.
*
* Returns 0 on success, -1 on failure w/ error set
*/
static int
virStorageBackendCreateQemuImgCheckEncryption(int format,
const char *type,
virConnectPtr conn,
virStorageVolDefPtr vol)
{
virStorageEncryptionPtr enc = vol->target.encryption;
if (format == VIR_STORAGE_FILE_QCOW || format == VIR_STORAGE_FILE_QCOW2) {
if (enc->format != VIR_STORAGE_ENCRYPTION_FORMAT_QCOW &&
enc->format != VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported volume encryption format %d"),
vol->target.encryption->format);
return -1;
}
if (enc->nsecrets > 1) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("too many secrets for qcow encryption"));
return -1;
}
if (enc->format == VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT ||
enc->nsecrets == 0) {
if (virStorageGenerateQcowEncryption(conn, vol) < 0)
return -1;
}
} else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("qcow volume encryption unsupported with "
"volume format %s"), type);
return -1;
}
return 0;
}
/* Create a qemu-img virCommand from the supplied binary path,
* volume definitions and imgformat
*/
@ -1133,35 +1180,11 @@ virStorageBackendCreateQemuImgCmdFromVol(virConnectPtr conn,
}
}
if (info.encryption) {
virStorageEncryptionPtr enc;
if (info.encryption &&
virStorageBackendCreateQemuImgCheckEncryption(info.format, type,
conn, vol) < 0)
return NULL;
if (info.format != VIR_STORAGE_FILE_QCOW &&
info.format != VIR_STORAGE_FILE_QCOW2) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("qcow volume encryption unsupported with "
"volume format %s"), type);
return NULL;
}
enc = vol->target.encryption;
if (enc->format != VIR_STORAGE_ENCRYPTION_FORMAT_QCOW &&
enc->format != VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported volume encryption format %d"),
vol->target.encryption->format);
return NULL;
}
if (enc->nsecrets > 1) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("too many secrets for qcow encryption"));
return NULL;
}
if (enc->format == VIR_STORAGE_ENCRYPTION_FORMAT_DEFAULT ||
enc->nsecrets == 0) {
if (virStorageGenerateQcowEncryption(conn, vol) < 0)
return NULL;
}
}
/* Size in KB */
info.size_arg = VIR_DIV_UP(vol->target.capacity, 1024);