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virNodeDevCapPCIDevIommuGroupParseXML: Use virXMLProp*

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This strictens the parser to disallow negative values (interpreted as
`UINT_MAX + value + 1`) for attribute `number`. Allowing negative
numbers to be interpreted this way makes no sense for this attribute.

Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
This commit is contained in:
Tim Wiederhake 2021-05-18 17:04:51 +02:00 committed by Laine Stump
parent cd4c756fd5
commit c6b0b7ad1a
1 changed files with 2 additions and 13 deletions
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15
src/conf/node_device_conf.c
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@ -1557,25 +1557,14 @@ virNodeDevCapPCIDevIommuGroupParseXML(xmlXPathContextPtr ctxt,
{
VIR_XPATH_NODE_AUTORESTORE(ctxt)
g_autofree xmlNodePtr *addrNodes = NULL;
g_autofree char *numberStr = NULL;
int nAddrNodes;
size_t i;
ctxt->node = iommuGroupNode;
numberStr = virXMLPropString(iommuGroupNode, "number");
if (!numberStr) {
virReportError(VIR_ERR_XML_ERROR,
"%s", _("missing iommuGroup number attribute"));
if (virXMLPropUInt(iommuGroupNode, "number", 10, VIR_XML_PROP_REQUIRED,
&pci_dev->iommuGroupNumber) < 0)
return -1;
}
if (virStrToLong_ui(numberStr, NULL, 10,
&pci_dev->iommuGroupNumber) < 0) {
virReportError(VIR_ERR_XML_ERROR,
_("invalid iommuGroup number attribute '%s'"),
numberStr);
return -1;
}
if ((nAddrNodes = virXPathNodeSet("./address", ctxt, &addrNodes)) < 0)
return -1;