[Libvir] [PATCH] setmem checks
Daniel P. Berrange
berrange at redhat.com
Fri Jun 15 15:33:14 UTC 2007
On Fri, Jun 15, 2007 at 11:30:02AM -0400, Mark Johnson wrote:
> Which of these does folks prefer (same would apply to SetMaxMem).
I prefer the first. Full error checking & reporting. GetInfo should
never fail under any reasonable scenario. If it does fail its very
unlikely that a SetMemory would then work, so its pointless continuing
>
> ONE
> ------
> cmdSetmem(vshControl * ctl, vshCmd * cmd)
> {
> ...
> kilobytes = vshCommandOptInt(cmd, "kilobytes", &kilobytes);
> if (kilobytes <= 0) {
> virDomainFree(dom);
> vshError(ctl, FALSE, _("Invalid value of %d for memory size"),
> kilobytes);
> return FALSE;
> }
>
> if (virDomainGetInfo(dom, &info) != 0) {
> virDomainFree(dom);
> vshError(ctl, FALSE, _("Unable to verify MaxMemorySize"));
> return FALSE;
> }
> if (kilobytes > info.maxMem) {
> virDomainFree(dom);
> vshError(ctl, FALSE, _("Invalid value of %d for memory size"),
> kilobytes);
> return FALSE;
> }
> ...
> }
>
Dan.
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