[libvirt] [PATCH v2 08/32] conf: Rework virStoragePoolDefParseXML
John Ferlan
jferlan at redhat.com
Fri Feb 8 18:37:02 UTC 2019
Rather than having an error path, let's rework the code to allocate
and fill into an @def variable and then steal that into @ret when we
are successful leaving just a cleanup: path.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/conf/storage_conf.c | 114 ++++++++++++++++++++--------------------
1 file changed, 56 insertions(+), 58 deletions(-)
diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
index e6accb14c6..4a52b1497b 100644
--- a/src/conf/storage_conf.c
+++ b/src/conf/storage_conf.c
@@ -737,159 +737,157 @@ virStoragePoolDefPtr
virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
{
virStoragePoolOptionsPtr options;
- virStoragePoolDefPtr ret;
+ virStoragePoolDefPtr def;
+ virStoragePoolDefPtr ret = NULL;
xmlNodePtr source_node;
char *type = NULL;
char *uuid = NULL;
char *target_path = NULL;
- if (VIR_ALLOC(ret) < 0)
+ if (VIR_ALLOC(def) < 0)
return NULL;
type = virXPathString("string(./@type)", ctxt);
if (type == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("storage pool missing type attribute"));
- goto error;
+ goto cleanup;
}
- if ((ret->type = virStoragePoolTypeFromString(type)) < 0) {
+ if ((def->type = virStoragePoolTypeFromString(type)) < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown storage pool type %s"), type);
- goto error;
+ goto cleanup;
}
- if ((options = virStoragePoolOptionsForPoolType(ret->type)) == NULL)
- goto error;
+ if ((options = virStoragePoolOptionsForPoolType(def->type)) == NULL)
+ goto cleanup;
source_node = virXPathNode("./source", ctxt);
if (source_node) {
- if (virStoragePoolDefParseSource(ctxt, &ret->source, ret->type,
+ if (virStoragePoolDefParseSource(ctxt, &def->source, def->type,
source_node) < 0)
- goto error;
+ goto cleanup;
} else {
if (options->formatFromString)
- ret->source.format = options->defaultFormat;
+ def->source.format = options->defaultFormat;
}
- ret->name = virXPathString("string(./name)", ctxt);
- if (ret->name == NULL &&
+ def->name = virXPathString("string(./name)", ctxt);
+ if (def->name == NULL &&
options->flags & VIR_STORAGE_POOL_SOURCE_NAME &&
- VIR_STRDUP(ret->name, ret->source.name) < 0)
- goto error;
- if (ret->name == NULL) {
+ VIR_STRDUP(def->name, def->source.name) < 0)
+ goto cleanup;
+ if (def->name == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing pool source name element"));
- goto error;
+ goto cleanup;
}
- if (strchr(ret->name, '/')) {
+ if (strchr(def->name, '/')) {
virReportError(VIR_ERR_XML_ERROR,
- _("name %s cannot contain '/'"), ret->name);
- goto error;
+ _("name %s cannot contain '/'"), def->name);
+ goto cleanup;
}
uuid = virXPathString("string(./uuid)", ctxt);
if (uuid == NULL) {
- if (virUUIDGenerate(ret->uuid) < 0) {
+ if (virUUIDGenerate(def->uuid) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to generate uuid"));
- goto error;
+ goto cleanup;
}
} else {
- if (virUUIDParse(uuid, ret->uuid) < 0) {
+ if (virUUIDParse(uuid, def->uuid) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("malformed uuid element"));
- goto error;
+ goto cleanup;
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_HOST) {
- if (!ret->source.nhost) {
+ if (!def->source.nhost) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source host name"));
- goto error;
+ goto cleanup;
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_DIR) {
- if (!ret->source.dir) {
+ if (!def->source.dir) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source path"));
- goto error;
+ goto cleanup;
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_NAME) {
- if (ret->source.name == NULL) {
+ if (def->source.name == NULL) {
/* source name defaults to pool name */
- if (VIR_STRDUP(ret->source.name, ret->name) < 0)
- goto error;
+ if (VIR_STRDUP(def->source.name, def->name) < 0)
+ goto cleanup;
}
}
if ((options->flags & VIR_STORAGE_POOL_SOURCE_ADAPTER) &&
- (virStorageAdapterValidate(&ret->source.adapter)) < 0)
- goto error;
+ (virStorageAdapterValidate(&def->source.adapter)) < 0)
+ goto cleanup;
/* If DEVICE is the only source type, then its required */
if (options->flags == VIR_STORAGE_POOL_SOURCE_DEVICE) {
- if (!ret->source.ndevice) {
+ if (!def->source.ndevice) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source device name"));
- goto error;
+ goto cleanup;
}
}
/* When we are working with a virtual disk we can skip the target
* path and permissions */
if (!(options->flags & VIR_STORAGE_POOL_SOURCE_NETWORK)) {
- if (ret->type == VIR_STORAGE_POOL_LOGICAL) {
- if (virAsprintf(&target_path, "/dev/%s", ret->source.name) < 0)
- goto error;
- } else if (ret->type == VIR_STORAGE_POOL_ZFS) {
- if (virAsprintf(&target_path, "/dev/zvol/%s", ret->source.name) < 0)
- goto error;
+ if (def->type == VIR_STORAGE_POOL_LOGICAL) {
+ if (virAsprintf(&target_path, "/dev/%s", def->source.name) < 0)
+ goto cleanup;
+ } else if (def->type == VIR_STORAGE_POOL_ZFS) {
+ if (virAsprintf(&target_path, "/dev/zvol/%s", def->source.name) < 0)
+ goto cleanup;
} else {
target_path = virXPathString("string(./target/path)", ctxt);
if (!target_path) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool target path"));
- goto error;
+ goto cleanup;
}
}
- ret->target.path = virFileSanitizePath(target_path);
- if (!ret->target.path)
- goto error;
+ def->target.path = virFileSanitizePath(target_path);
+ if (!def->target.path)
+ goto cleanup;
- if (virStorageDefParsePerms(ctxt, &ret->target.perms,
+ if (virStorageDefParsePerms(ctxt, &def->target.perms,
"./target/permissions") < 0)
- goto error;
+ goto cleanup;
}
- if (ret->type == VIR_STORAGE_POOL_ISCSI_DIRECT &&
- !ret->source.initiator.iqn) {
+ if (def->type == VIR_STORAGE_POOL_ISCSI_DIRECT &&
+ !def->source.initiator.iqn) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("missing initiator IQN"));
- goto error;
+ goto cleanup;
}
/* Make a copy of all the callback pointers here for easier use,
* especially during the virStoragePoolSourceClear method */
- ret->ns = options->ns;
- if (ret->ns.parse &&
- (ret->ns.parse)(ctxt, &ret->namespaceData) < 0)
- goto error;
+ def->ns = options->ns;
+ if (def->ns.parse &&
+ (def->ns.parse)(ctxt, &def->namespaceData) < 0)
+ goto cleanup;
+ VIR_STEAL_PTR(ret, def);
cleanup:
+ virStoragePoolDefFree(def);
VIR_FREE(uuid);
VIR_FREE(type);
VIR_FREE(target_path);
return ret;
-
- error:
- virStoragePoolDefFree(ret);
- ret = NULL;
- goto cleanup;
}
--
2.20.1
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