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conf: cpu: Refactor parsing of vendor_id and fallback attributes

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This patch simplifies the code that parses the fallback and vendor_id
attributes from the domain xml cpu definition.

Changes done:
- free temp variables in the cleanup section instead of local use
- remove checking for presence of the attribute to directly getting the
value (saving call to virXPathBoolean)
- replace loop used to check for ',' in the vendor_id string with strchr
This commit is contained in:
Peter Krempa 2012-12-17 11:49:33 +01:00
parent fb49ffc3bb
commit 4a9c179325
1 changed files with 17 additions and 26 deletions
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43
src/conf/cpu_conf.c
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@ -195,6 +195,8 @@ virCPUDefParseXML(const xmlNodePtr node,
int n;
unsigned int i;
char *cpuMode;
char *fallback = NULL;
char *vendor_id = NULL;
if (!xmlStrEqual(node->name, BAD_CAST "cpu")) {
virReportError(VIR_ERR_INTERNAL_ERROR,
@ -288,45 +290,32 @@ virCPUDefParseXML(const xmlNodePtr node,
if (def->type == VIR_CPU_TYPE_GUEST &&
def->mode != VIR_CPU_MODE_HOST_PASSTHROUGH) {
if (virXPathBoolean("boolean(./model[1]/@fallback)", ctxt)) {
const char *fallback;
fallback = virXPathString("string(./model[1]/@fallback)", ctxt);
if (fallback) {
def->fallback = virCPUFallbackTypeFromString(fallback);
VIR_FREE(fallback);
if (def->fallback < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Invalid fallback attribute"));
goto error;
}
if ((fallback = virXPathString("string(./model[1]/@fallback)", ctxt))) {
if ((def->fallback = virCPUFallbackTypeFromString(fallback)) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("Invalid fallback attribute"));
goto error;
}
}
if (virXPathBoolean("boolean(./model[1]/@vendor_id)", ctxt)) {
char *vendor_id;
vendor_id = virXPathString("string(./model[1]/@vendor_id)",
ctxt);
if (!vendor_id ||
strlen(vendor_id) != VIR_CPU_VENDOR_ID_LENGTH) {
if ((vendor_id = virXPathString("string(./model[1]/@vendor_id)",
ctxt))) {
if (strlen(vendor_id) != VIR_CPU_VENDOR_ID_LENGTH) {
virReportError(VIR_ERR_XML_ERROR,
_("vendor_id must be exactly"
" %d characters long"),
_("vendor_id must be exactly %d characters long"),
VIR_CPU_VENDOR_ID_LENGTH);
VIR_FREE(vendor_id);
goto error;
}
/* ensure that the string can be passed to qemu*/
for (i = 0; i < strlen(vendor_id); i++) {
if (vendor_id[i]==',') {
if (strchr(vendor_id, ',')) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("vendor id is invalid"));
VIR_FREE(vendor_id);
goto error;
}
}
def->vendor_id = vendor_id;
vendor_id = NULL;
}
}
@ -490,6 +479,8 @@ virCPUDefParseXML(const xmlNodePtr node,
}
cleanup:
VIR_FREE(fallback);
VIR_FREE(vendor_id);
VIR_FREE(nodes);
return def;