[libvirt] [PATCHv2 12/62] qemu: monitor: Allow using 'qdev' instead of 'device' for getting disk throttling
Peter Krempa
pkrempa at redhat.com
Wed Aug 22 11:04:52 UTC 2018
On Wed, Aug 22, 2018 at 06:47:45 -0400, John Ferlan wrote:
> [...]
>
> > --- a/src/qemu/qemu_monitor_json.c
> > +++ b/src/qemu/qemu_monitor_json.c
> > @@ -4818,7 +4818,8 @@ int qemuMonitorJSONOpenGraphics(qemuMonitorPtr mon,
> > }
> > static int
> > qemuMonitorJSONBlockIoThrottleInfo(virJSONValuePtr io_throttle,
> > - const char *device,
> > + const char *drivealias,
> > + const char *qdevid,
> > virDomainBlockIoTuneInfoPtr reply)
> > {
> > int ret = -1;
> > @@ -4828,7 +4829,8 @@ qemuMonitorJSONBlockIoThrottleInfo(virJSONValuePtr io_throttle,
> > for (i = 0; i < virJSONValueArraySize(io_throttle); i++) {
> > virJSONValuePtr temp_dev = virJSONValueArrayGet(io_throttle, i);
> > virJSONValuePtr inserted;
> > - const char *current_dev;
> > + const char *current_drive;
> > + const char *current_qdev;
> >
> > if (!temp_dev || virJSONValueGetType(temp_dev) != VIR_JSON_TYPE_OBJECT) {
> > virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> > @@ -4837,14 +4839,18 @@ qemuMonitorJSONBlockIoThrottleInfo(virJSONValuePtr io_throttle,
> > goto cleanup;
> > }
> >
> > - if (!(current_dev = virJSONValueObjectGetString(temp_dev, "device"))) {
> > + current_qdev = virJSONValueObjectGetString(temp_dev, "qdev");
> > + current_drive = virJSONValueObjectGetString(temp_dev, "device");
> > +
> > + if (!current_drive && !current_qdev) {
>
> Is this supposed to be || ?
No that would break old qemus
>
> > virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> > _("block_io_throttle device entry "
> > "was not in expected format"));
> > goto cleanup;
> > }
> >
> > - if (STRNEQ(current_dev, device))
> > + if ((drivealias && STRNEQ(current_drive, drivealias)) ||
> > + (qdevid && STRNEQ(current_qdev, qdevid)))
>
> Because Coverity complains here that if one or the other is == NULL
> while the other != NULL, then strcmp is not going to be happy.
Ah, yes. I'll change these to the NULLABLE variant.
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