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Refactoring virDomainHostdevSubsysUSBDefParseXML() to use XPath

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Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Kristina Hanicova 2021-05-04 13:39:56 +02:00 committed by Michal Privoznik
parent c9178c86cb
commit 9f27f12282
1 changed files with 36 additions and 89 deletions
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125
src/conf/domain_conf.c
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@ -6709,14 +6709,18 @@ virDomainDeviceInfoParseXML(virDomainXMLOption *xmlopt,
static int
virDomainHostdevSubsysUSBDefParseXML(xmlNodePtr node,
xmlXPathContextPtr ctxt G_GNUC_UNUSED,
xmlXPathContextPtr ctxt,
virDomainHostdevDef *def)
{
bool got_product, got_vendor;
xmlNodePtr cur;
virDomainHostdevSubsysUSB *usbsrc = &def->source.subsys.u.usb;
g_autofree char *startupPolicy = NULL;
g_autofree char *autoAddress = NULL;
xmlNodePtr vendorNode;
xmlNodePtr productNode;
xmlNodePtr addressNode;
VIR_XPATH_NODE_AUTORESTORE(ctxt)
ctxt->node = node;
if ((startupPolicy = virXMLPropString(node, "startupPolicy"))) {
def->startupPolicy =
@ -6734,99 +6738,42 @@ virDomainHostdevSubsysUSBDefParseXML(xmlNodePtr node,
/* Product can validly be 0, so we need some extra help to determine
* if it is uninitialized */
got_product = false;
got_vendor = false;
vendorNode = virXPathNode("./vendor", ctxt);
productNode = virXPathNode("./product", ctxt);
cur = node->children;
while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE) {
if (virXMLNodeNameEqual(cur, "vendor")) {
g_autofree char *vendor = virXMLPropString(cur, "id");
if (vendorNode) {
if (virXMLPropUInt(vendorNode, "id", 0,
VIR_XML_PROP_REQUIRED | VIR_XML_PROP_NONZERO,
&usbsrc->vendor) < 0)
return -1;
if (vendor) {
got_vendor = true;
if (virStrToLong_ui(vendor, NULL, 0, &usbsrc->vendor) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse vendor id %s"), vendor);
return -1;
}
} else {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("usb vendor needs id"));
return -1;
}
} else if (virXMLNodeNameEqual(cur, "product")) {
g_autofree char *product = virXMLPropString(cur, "id");
if (product) {
got_product = true;
if (virStrToLong_ui(product, NULL, 0,
&usbsrc->product) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse product %s"),
product);
return -1;
}
} else {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("usb product needs id"));
return -1;
}
} else if (virXMLNodeNameEqual(cur, "address")) {
g_autofree char *bus = NULL;
g_autofree char *device = NULL;
bus = virXMLPropString(cur, "bus");
if (bus) {
if (virStrToLong_ui(bus, NULL, 0, &usbsrc->bus) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse bus %s"), bus);
return -1;
}
} else {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("usb address needs bus id"));
return -1;
}
device = virXMLPropString(cur, "device");
if (device) {
if (virStrToLong_ui(device, NULL, 0, &usbsrc->device) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse device %s"),
device);
return -1;
}
} else {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("usb address needs device id"));
return -1;
}
} else {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown usb source type '%s'"),
cur->name);
return -1;
}
if (!productNode) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing product"));
return -1;
}
cur = cur->next;
}
if (got_vendor && usbsrc->vendor == 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("vendor cannot be 0."));
return -1;
if (productNode) {
if (virXMLPropUInt(productNode, "id", 0,
VIR_XML_PROP_REQUIRED, &usbsrc->product) < 0)
return -1;
if (!vendorNode) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing vendor"));
return -1;
}
}
if (!got_vendor && got_product) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing vendor"));
return -1;
}
if (got_vendor && !got_product) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing product"));
return -1;
if ((addressNode = virXPathNode("./address", ctxt))) {
if (virXMLPropUInt(addressNode, "bus", 0,
VIR_XML_PROP_REQUIRED, &usbsrc->bus) < 0)
return -1;
if (virXMLPropUInt(addressNode, "device", 0,
VIR_XML_PROP_REQUIRED, &usbsrc->device) < 0)
return -1;
}
return 0;