[libvirt] qemuDomainSnapshotLoad leak
clang reports that the assignment to "snap" below is a dead store.
Actually it's also a leak, and it seems like it deserves a diagnostic
if/when that function returns NULL.
It looks to me like this function should return
something other than "void", so that it can inform
its caller of such a failure.
No?
This is from qemu_driver.c:
static void qemuDomainSnapshotLoad(void *payload,
const char *name ATTRIBUTE_UNUSED,
void *data)
{
...
virDomainSnapshotObjPtr snap = NULL;
...
while ((entry = readdir(dir))) {
...
def = virDomainSnapshotDefParseString(xmlStr, 0);
if (def == NULL) {
/* Nothing we can do here, skip this one */
VIR_ERROR("Failed to parse snapshot XML from file '%s'",
fullpath);
VIR_FREE(xmlStr);
continue;
}
snap = virDomainSnapshotAssignDef(&vm->snapshots, def);
VIR_FREE(xmlStr);
}
/* FIXME: qemu keeps internal track of snapshots. We can get access
* to this info via the "info snapshots" monitor command for running
* domains, or via "qemu-img snapshot -l" for shutoff domains. It would
* be nice to update our internal state based on that, but there is a
* a problem. qemu doesn't track all of the same metadata that we do.
* In particular we wouldn't be able to fill in the <parent>, which is
* pretty important in our metadata.
*/
virResetLastError();
cleanup:
if (dir)
closedir(dir);
VIR_FREE(snapDir);
virDomainObjUnlock(vm);
}