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Replace sscanf in legacy device address parsing

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Parsing is stricter now and doesn't accept trailing characters
after the actual <domain>:<bus>:<slot> sequence anymore.
This commit is contained in:
Matthias Bolte 2010-03-30 15:45:53 +02:00
parent e813200714
commit 2072d63c5b
1 changed files with 23 additions and 12 deletions
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35
src/conf/domain_conf.c
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@ -1290,6 +1290,23 @@ cleanup:
return ret;
}
static int
virDomainParseLegacyDeviceAddress(char *devaddr,
virDomainDevicePCIAddressPtr pci)
{
char *tmp;
/* expected format: <domain>:<bus>:<slot> */
if (/* domain */
virStrToLong_ui(devaddr, &tmp, 16, &pci->domain) < 0 || *tmp != ':' ||
/* bus */
virStrToLong_ui(tmp + 1, &tmp, 16, &pci->bus) < 0 || *tmp != ':' ||
/* slot */
virStrToLong_ui(tmp + 1, NULL, 16, &pci->slot) < 0)
return -1;
return 0;
}
int
virDomainDiskDefAssignAddress(virDomainDiskDefPtr def)
@ -1541,10 +1558,8 @@ virDomainDiskDefParseXML(xmlNodePtr node,
}
if (devaddr) {
if (sscanf(devaddr, "%x:%x:%x",
&def->info.addr.pci.domain,
&def->info.addr.pci.bus,
&def->info.addr.pci.slot) < 3) {
if (virDomainParseLegacyDeviceAddress(devaddr,
&def->info.addr.pci) < 0) {
virDomainReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to parse devaddr parameter '%s'"),
devaddr);
@ -1901,10 +1916,8 @@ virDomainNetDefParseXML(virCapsPtr caps,
}
if (devaddr) {
if (sscanf(devaddr, "%x:%x:%x",
&def->info.addr.pci.domain,
&def->info.addr.pci.bus,
&def->info.addr.pci.slot) < 3) {
if (virDomainParseLegacyDeviceAddress(devaddr,
&def->info.addr.pci) < 0) {
virDomainReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to parse devaddr parameter '%s'"),
devaddr);
@ -3222,10 +3235,8 @@ virDomainHostdevSubsysPciDefParseXML(const xmlNodePtr node,
/* Legacy back-compat. Don't add any more attributes here */
char *devaddr = virXMLPropString(cur, "devaddr");
if (devaddr &&
sscanf(devaddr, "%x:%x:%x",
&def->info.addr.pci.domain,
&def->info.addr.pci.bus,
&def->info.addr.pci.slot) < 3) {
virDomainParseLegacyDeviceAddress(devaddr,
&def->info.addr.pci) < 0) {
virDomainReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to parse devaddr parameter '%s'"),
devaddr);