[libvirt] PATCH: Fix crash attempting to shutdown inactive QEMU vm

[Mark McLoughlin]

On Fri, 2009-07-31 at 15:52 +0100, Daniel P. Berrange wrote:
> If the virDomainShutdown() op was run on an active QEMu vm,
> it would crash, since the def->monitor_chr was NULL.
> 
> 
> Daniel
> 
> commit 49ec121fd806aaa07bbcba9668a8f9dd43dda9c4
> Author: Daniel P. Berrange <berrange at redhat.com>
> Date:   Fri Jul 31 15:50:46 2009 +0100
> 
>     Fix crash when attempting to shutdown inactive QEMU vm
>     
>     * src/qemu_driver.c: Add check that QEMU is active before attemting
>       to shutdown. Fix error code for check in destroy method
> 
> diff --git a/src/qemu_driver.c b/src/qemu_driver.c
> index 26897d3..cebbafb 100644
> --- a/src/qemu_driver.c
> +++ b/src/qemu_driver.c
> @@ -2940,6 +2940,12 @@ static int qemudDomainShutdown(virDomainPtr dom) {
>          goto cleanup;
>      }
>  
> +    if (!virDomainIsActive(vm)) {
> +        qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_INVALID,
> +                         "%s", _("domain is not running"));
> +        goto cleanup;
> +    }
> +

Good catch. Perhaps add a NULL check in qemudMonitorSend(), since it's
pretty hard to go through all the callers and be sure we're checking the
domain is active for each one

In any case, ACK

Cheers,
Mark.