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util: storage: Simplify error handling in virStorageAuthDefParseXML

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Unify the cleanup and error paths and simplify the code flow by removing
some unnecessary variables.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
This commit is contained in:
Peter Krempa 2018-03-06 14:03:27 +01:00
parent b932ed69f6
commit 74942ff0b6
1 changed files with 10 additions and 13 deletions
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23
src/util/virstoragefile.c
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@ -1813,20 +1813,18 @@ static virStorageAuthDefPtr
virStorageAuthDefParseXML(xmlXPathContextPtr ctxt)
{
virStorageAuthDefPtr authdef = NULL;
virStorageAuthDefPtr ret = NULL;
xmlNodePtr secretnode = NULL;
char *username = NULL;
char *authtype = NULL;
if (VIR_ALLOC(authdef) < 0)
return NULL;
if (!(username = virXPathString("string(./@username)", ctxt))) {
if (!(authdef->username = virXPathString("string(./@username)", ctxt))) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing username for auth"));
goto error;
goto cleanup;
}
authdef->username = username;
username = NULL;
authdef->authType = VIR_STORAGE_AUTH_TYPE_NONE;
authtype = virXPathString("string(./@type)", ctxt);
@ -1837,15 +1835,14 @@ virStorageAuthDefParseXML(xmlXPathContextPtr ctxt)
if ((authdef->authType = virStorageAuthTypeFromString(authtype)) < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unknown auth type '%s'"), authtype);
goto error;
goto cleanup;
}
VIR_FREE(authtype);
}
if (!(secretnode = virXPathNode("./secret ", ctxt))) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Missing <secret> element in auth"));
goto error;
goto cleanup;
}
/* Used by the domain disk xml parsing in order to ensure the
@ -1858,15 +1855,15 @@ virStorageAuthDefParseXML(xmlXPathContextPtr ctxt)
authdef->secrettype = virXMLPropString(secretnode, "type");
if (virSecretLookupParseSecret(secretnode, &authdef->seclookupdef) < 0)
goto error;
goto cleanup;
return authdef;
VIR_STEAL_PTR(ret, authdef);
error:
cleanup:
VIR_FREE(authtype);
VIR_FREE(username);
virStorageAuthDefFree(authdef);
return NULL;
return ret;
}