[libvirt] [PATCH v2 16/32] conf: Use VIR_AUTOFREE for storage_conf
John Ferlan
jferlan at redhat.com
Fri Feb 8 18:37:10 UTC 2019
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan at redhat.com>
Reviewed-by: Erik Skultety <eskultet at redhat.com>
---
src/conf/storage_conf.c | 179 +++++++++++++++++-----------------------
1 file changed, 74 insertions(+), 105 deletions(-)
diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
index 177ea63076..a2ddecf0f2 100644
--- a/src/conf/storage_conf.c
+++ b/src/conf/storage_conf.c
@@ -453,16 +453,16 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
xmlNodePtr node)
{
int ret = -1;
- xmlNodePtr relnode, authnode, *nodeset = NULL;
+ xmlNodePtr relnode, authnode;
xmlNodePtr adapternode;
int nsource;
size_t i;
virStoragePoolOptionsPtr options;
- char *name = NULL;
- char *port = NULL;
- char *ver = NULL;
int n;
VIR_AUTOPTR(virStorageAuthDef) authdef = NULL;
+ VIR_AUTOFREE(char *) port = NULL;
+ VIR_AUTOFREE(char *) ver = NULL;
+ VIR_AUTOFREE(xmlNodePtr *) nodeset = NULL;
relnode = ctxt->node;
ctxt->node = node;
@@ -478,7 +478,9 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
}
if (options->formatFromString) {
- char *format = virXPathString("string(./format/@type)", ctxt);
+ VIR_AUTOFREE(char *) format = NULL;
+
+ format = virXPathString("string(./format/@type)", ctxt);
if (format == NULL)
source->format = options->defaultFormat;
else
@@ -487,10 +489,8 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
if (source->format < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown pool format type %s"), format);
- VIR_FREE(format);
goto cleanup;
}
- VIR_FREE(format);
}
if ((n = virXPathNodeSet("./host", ctxt, &nodeset)) < 0)
@@ -502,13 +502,12 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
source->nhost = n;
for (i = 0; i < source->nhost; i++) {
- name = virXMLPropString(nodeset[i], "name");
- if (name == NULL) {
+ source->hosts[i].name = virXMLPropString(nodeset[i], "name");
+ if (!source->hosts[i].name) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool host name"));
goto cleanup;
}
- source->hosts[i].name = name;
port = virXMLPropString(nodeset[i], "port");
if (port) {
@@ -518,7 +517,6 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
port);
goto cleanup;
}
- VIR_FREE(port);
}
}
}
@@ -532,7 +530,7 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
goto cleanup;
for (i = 0; i < nsource; i++) {
- char *partsep;
+ VIR_AUTOFREE(char *) partsep = NULL;
virStoragePoolSourceDevice dev = { .path = NULL };
dev.path = virXMLPropString(nodeset[i], "path");
@@ -550,10 +548,8 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
_("invalid part_separator setting '%s'"),
partsep);
virStoragePoolSourceDeviceClear(&dev);
- VIR_FREE(partsep);
goto cleanup;
}
- VIR_FREE(partsep);
}
if (VIR_APPEND_ELEMENT(source->devices, source->ndevice, dev) < 0) {
@@ -612,8 +608,6 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
cleanup:
ctxt->node = relnode;
- VIR_FREE(port);
- VIR_FREE(nodeset);
return ret;
}
@@ -660,11 +654,11 @@ virStorageDefParsePerms(xmlXPathContextPtr ctxt,
virStoragePermsPtr perms,
const char *permxpath)
{
- char *mode;
long long val;
int ret = -1;
xmlNodePtr relnode;
xmlNodePtr node;
+ VIR_AUTOFREE(char *) mode = NULL;
node = virXPathNode(permxpath, ctxt);
if (node == NULL) {
@@ -683,13 +677,11 @@ virStorageDefParsePerms(xmlXPathContextPtr ctxt,
int tmp;
if (virStrToLong_i(mode, NULL, 8, &tmp) < 0 || (tmp & ~0777)) {
- VIR_FREE(mode);
virReportError(VIR_ERR_XML_ERROR, "%s",
_("malformed octal mode"));
goto error;
}
perms->mode = tmp;
- VIR_FREE(mode);
} else {
perms->mode = (mode_t) -1;
}
@@ -739,10 +731,10 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
virStoragePoolOptionsPtr options;
virStoragePoolDefPtr ret = NULL;
xmlNodePtr source_node;
- char *type = NULL;
- char *uuid = NULL;
- char *target_path = NULL;
VIR_AUTOPTR(virStoragePoolDef) def = NULL;
+ VIR_AUTOFREE(char *) type = NULL;
+ VIR_AUTOFREE(char *) uuid = NULL;
+ VIR_AUTOFREE(char *) target_path = NULL;
if (VIR_ALLOC(def) < 0)
return NULL;
@@ -751,23 +743,23 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
if (type == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("storage pool missing type attribute"));
- goto cleanup;
+ return NULL;
}
if ((def->type = virStoragePoolTypeFromString(type)) < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown storage pool type %s"), type);
- goto cleanup;
+ return NULL;
}
if ((options = virStoragePoolOptionsForPoolType(def->type)) == NULL)
- goto cleanup;
+ return NULL;
source_node = virXPathNode("./source", ctxt);
if (source_node) {
if (virStoragePoolDefParseSource(ctxt, &def->source, def->type,
source_node) < 0)
- goto cleanup;
+ return NULL;
} else {
if (options->formatFromString)
def->source.format = options->defaultFormat;
@@ -777,17 +769,18 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
if (def->name == NULL &&
options->flags & VIR_STORAGE_POOL_SOURCE_NAME &&
VIR_STRDUP(def->name, def->source.name) < 0)
- goto cleanup;
+ return NULL;
+
if (def->name == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing pool source name element"));
- goto cleanup;
+ return NULL;
}
if (strchr(def->name, '/')) {
virReportError(VIR_ERR_XML_ERROR,
_("name %s cannot contain '/'"), def->name);
- goto cleanup;
+ return NULL;
}
uuid = virXPathString("string(./uuid)", ctxt);
@@ -795,13 +788,13 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
if (virUUIDGenerate(def->uuid) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to generate uuid"));
- goto cleanup;
+ return NULL;
}
} else {
if (virUUIDParse(uuid, def->uuid) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("malformed uuid element"));
- goto cleanup;
+ return NULL;
}
}
@@ -809,7 +802,7 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
if (!def->source.nhost) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source host name"));
- goto cleanup;
+ return NULL;
}
}
@@ -817,27 +810,27 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
if (!def->source.dir) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source path"));
- goto cleanup;
+ return NULL;
}
}
if (options->flags & VIR_STORAGE_POOL_SOURCE_NAME) {
if (def->source.name == NULL) {
/* source name defaults to pool name */
if (VIR_STRDUP(def->source.name, def->name) < 0)
- goto cleanup;
+ return NULL;
}
}
if ((options->flags & VIR_STORAGE_POOL_SOURCE_ADAPTER) &&
(virStorageAdapterValidate(&def->source.adapter)) < 0)
- goto cleanup;
+ return NULL;
/* If DEVICE is the only source type, then its required */
if (options->flags == VIR_STORAGE_POOL_SOURCE_DEVICE) {
if (!def->source.ndevice) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool source device name"));
- goto cleanup;
+ return NULL;
}
}
@@ -846,32 +839,32 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
if (!(options->flags & VIR_STORAGE_POOL_SOURCE_NETWORK)) {
if (def->type == VIR_STORAGE_POOL_LOGICAL) {
if (virAsprintf(&target_path, "/dev/%s", def->source.name) < 0)
- goto cleanup;
+ return NULL;
} else if (def->type == VIR_STORAGE_POOL_ZFS) {
if (virAsprintf(&target_path, "/dev/zvol/%s", def->source.name) < 0)
- goto cleanup;
+ return NULL;
} else {
target_path = virXPathString("string(./target/path)", ctxt);
if (!target_path) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing storage pool target path"));
- goto cleanup;
+ return NULL;
}
}
def->target.path = virFileSanitizePath(target_path);
if (!def->target.path)
- goto cleanup;
+ return NULL;
if (virStorageDefParsePerms(ctxt, &def->target.perms,
"./target/permissions") < 0)
- goto cleanup;
+ return NULL;
}
if (def->type == VIR_STORAGE_POOL_ISCSI_DIRECT &&
!def->source.initiator.iqn) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("missing initiator IQN"));
- goto cleanup;
+ return NULL;
}
/* Make a copy of all the callback pointers here for easier use,
@@ -879,13 +872,9 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
def->ns = options->ns;
if (def->ns.parse &&
(def->ns.parse)(ctxt, &def->namespaceData) < 0)
- goto cleanup;
+ return NULL;
VIR_STEAL_PTR(ret, def);
- cleanup:
- VIR_FREE(uuid);
- VIR_FREE(type);
- VIR_FREE(target_path);
return ret;
}
@@ -1167,16 +1156,16 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
{
virStorageVolDefPtr ret = NULL;
virStorageVolOptionsPtr options;
- char *type = NULL;
- char *allocation = NULL;
- char *capacity = NULL;
- char *unit = NULL;
- char *backingStore = NULL;
xmlNodePtr node;
- xmlNodePtr *nodes = NULL;
size_t i;
int n;
VIR_AUTOPTR(virStorageVolDef) def = NULL;
+ VIR_AUTOFREE(char *) type = NULL;
+ VIR_AUTOFREE(char *) allocation = NULL;
+ VIR_AUTOFREE(char *) capacity = NULL;
+ VIR_AUTOFREE(char *) unit = NULL;
+ VIR_AUTOFREE(char *) backingStore = NULL;
+ VIR_AUTOFREE(xmlNodePtr *) nodes = NULL;
virCheckFlags(VIR_VOL_XML_PARSE_NO_CAPACITY |
VIR_VOL_XML_PARSE_OPT_CAPACITY, NULL);
@@ -1194,7 +1183,7 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
if (def->name == NULL) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing volume name element"));
- goto cleanup;
+ return NULL;
}
/* Normally generated by pool refresh, but useful for unit tests */
@@ -1206,13 +1195,13 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
if ((def->type = virStorageVolTypeFromString(type)) < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown volume type '%s'"), type);
- goto cleanup;
+ return NULL;
}
}
if ((backingStore = virXPathString("string(./backingStore/path)", ctxt))) {
if (VIR_ALLOC(def->target.backingStore) < 0)
- goto cleanup;
+ return NULL;
def->target.backingStore->type = VIR_STORAGE_TYPE_FILE;
@@ -1220,7 +1209,9 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
backingStore = NULL;
if (options->formatFromString) {
- char *format = virXPathString("string(./backingStore/format/@type)", ctxt);
+ VIR_AUTOFREE(char *) format = NULL;
+
+ format = virXPathString("string(./backingStore/format/@type)", ctxt);
if (format == NULL)
def->target.backingStore->format = options->defaultFormat;
else
@@ -1229,29 +1220,27 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
if (def->target.backingStore->format < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown volume format type %s"), format);
- VIR_FREE(format);
- goto cleanup;
+ return NULL;
}
- VIR_FREE(format);
}
if (VIR_ALLOC(def->target.backingStore->perms) < 0)
- goto cleanup;
+ return NULL;
if (virStorageDefParsePerms(ctxt, def->target.backingStore->perms,
"./backingStore/permissions") < 0)
- goto cleanup;
+ return NULL;
}
capacity = virXPathString("string(./capacity)", ctxt);
unit = virXPathString("string(./capacity/@unit)", ctxt);
if (capacity) {
if (virStorageSize(unit, capacity, &def->target.capacity) < 0)
- goto cleanup;
+ return NULL;
} else if (!(flags & VIR_VOL_XML_PARSE_NO_CAPACITY) &&
!((flags & VIR_VOL_XML_PARSE_OPT_CAPACITY) &&
virStorageSourceHasBacking(&def->target))) {
virReportError(VIR_ERR_XML_ERROR, "%s", _("missing capacity element"));
- goto cleanup;
+ return NULL;
}
VIR_FREE(unit);
@@ -1259,7 +1248,7 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
if (allocation) {
unit = virXPathString("string(./allocation/@unit)", ctxt);
if (virStorageSize(unit, allocation, &def->target.allocation) < 0)
- goto cleanup;
+ return NULL;
def->target.has_allocation = true;
} else {
def->target.allocation = def->target.capacity;
@@ -1267,7 +1256,9 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
def->target.path = virXPathString("string(./target/path)", ctxt);
if (options->formatFromString) {
- char *format = virXPathString("string(./target/format/@type)", ctxt);
+ VIR_AUTOFREE(char *) format = NULL;
+
+ format = virXPathString("string(./target/format/@type)", ctxt);
if (format == NULL)
def->target.format = options->defaultFormat;
else
@@ -1276,41 +1267,39 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
if (def->target.format < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown volume format type %s"), format);
- VIR_FREE(format);
- goto cleanup;
+ return NULL;
}
- VIR_FREE(format);
}
if (VIR_ALLOC(def->target.perms) < 0)
- goto cleanup;
+ return NULL;
if (virStorageDefParsePerms(ctxt, def->target.perms,
"./target/permissions") < 0)
- goto cleanup;
+ return NULL;
node = virXPathNode("./target/encryption", ctxt);
if (node != NULL) {
def->target.encryption = virStorageEncryptionParseNode(node, ctxt);
if (def->target.encryption == NULL)
- goto cleanup;
+ return NULL;
}
def->target.compat = virXPathString("string(./target/compat)", ctxt);
if (virStorageFileCheckCompat(def->target.compat) < 0)
- goto cleanup;
+ return NULL;
if (virXPathNode("./target/nocow", ctxt))
def->target.nocow = true;
if (virXPathNode("./target/features", ctxt)) {
if ((n = virXPathNodeSet("./target/features/*", ctxt, &nodes)) < 0)
- goto cleanup;
+ return NULL;
if (!def->target.compat && VIR_STRDUP(def->target.compat, "1.1") < 0)
- goto cleanup;
+ return NULL;
if (!(def->target.features = virBitmapNew(VIR_STORAGE_FILE_FEATURE_LAST)))
- goto cleanup;
+ return NULL;
for (i = 0; i < n; i++) {
int f = virStorageFileFeatureTypeFromString((const char*)nodes[i]->name);
@@ -1318,7 +1307,7 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
if (f < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("unsupported feature %s"),
(const char*)nodes[i]->name);
- goto cleanup;
+ return NULL;
}
ignore_value(virBitmapSetBit(def->target.features, f));
}
@@ -1326,14 +1315,6 @@ virStorageVolDefParseXML(virStoragePoolDefPtr pool,
}
VIR_STEAL_PTR(ret, def);
-
- cleanup:
- VIR_FREE(nodes);
- VIR_FREE(allocation);
- VIR_FREE(capacity);
- VIR_FREE(unit);
- VIR_FREE(type);
- VIR_FREE(backingStore);
return ret;
}
@@ -1615,32 +1596,27 @@ virStoragePoolSaveState(const char *stateFile,
virStoragePoolDefPtr def)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
- int ret = -1;
- char *xml;
+ VIR_AUTOFREE(char *) xml = NULL;
virBufferAddLit(&buf, "<poolstate>\n");
virBufferAdjustIndent(&buf, 2);
if (virStoragePoolDefFormatBuf(&buf, def) < 0)
- goto error;
+ return -1;
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</poolstate>\n");
if (virBufferCheckError(&buf) < 0)
- goto error;
+ return -1;
if (!(xml = virBufferContentAndReset(&buf)))
- goto error;
+ return -1;
if (virStoragePoolSaveXML(stateFile, def, xml))
- goto error;
-
- ret = 0;
+ return -1;
- error:
- VIR_FREE(xml);
- return ret;
+ return 0;
}
@@ -1648,8 +1624,7 @@ int
virStoragePoolSaveConfig(const char *configFile,
virStoragePoolDefPtr def)
{
- char *xml;
- int ret = -1;
+ VIR_AUTOFREE(char *) xml = NULL;
if (!(xml = virStoragePoolDefFormat(def))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -1657,13 +1632,7 @@ virStoragePoolSaveConfig(const char *configFile,
return -1;
}
- if (virStoragePoolSaveXML(configFile, def, xml))
- goto cleanup;
-
- ret = 0;
- cleanup:
- VIR_FREE(xml);
- return ret;
+ return virStoragePoolSaveXML(configFile, def, xml);
}
--
2.20.1
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