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qemu: firmware: check virJSONValueObjectGet return value

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If the mapping is not present, we should not try to
access its elements.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 8b5b80f4c5
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This commit is contained in:
Ján Tomko 2020-09-22 23:22:06 +02:00
parent a95fc75627
commit 8e12a0b8fa
1 changed files with 8 additions and 1 deletions
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9
src/qemu/qemu_firmware.c
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@ -434,10 +434,17 @@ qemuFirmwareMappingParse(const char *path,
virJSONValuePtr doc,
qemuFirmwarePtr fw)
{
virJSONValuePtr mapping = virJSONValueObjectGet(doc, "mapping");
virJSONValuePtr mapping;
const char *deviceStr;
int tmp;
if (!(mapping = virJSONValueObjectGet(doc, "mapping"))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("missing mapping in '%s'"),
path);
return -1;
}
if (!(deviceStr = virJSONValueObjectGetString(mapping, "device"))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("missing device type in '%s'"),