[libvirt] [PATCH v3 2/2] qemu: adding domainGetHostname support for QEMU.

[John Ferlan]

On 08/21/2018 10:39 PM, Julio Faracco wrote:
> This commit add the support to use the function qemuAgentGetHostname()

s/add the/adds/

> for obtain the domain hostname using QEMU-GA command.

s/for/to/

> 
> Signed-off-by: Julio Faracco <jcfaracco at gmail.com>
> ---
>  src/qemu/qemu_driver.c | 40 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 40 insertions(+)
> 
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index 21e9e87ddd..5f53cbea15 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -19351,6 +19351,45 @@ qemuConnectGetCPUModelNames(virConnectPtr conn,
>      return virCPUGetModels(arch, models);
>  }
>  

Nit - we prefer 2 blank lines between functions for new code.

> +static char *
> +qemuDomainGetHostname(virDomainPtr dom,
> +                      unsigned int flags)
> +{
> +    virQEMUDriverPtr driver = dom->conn->privateData;
> +    virDomainObjPtr vm = NULL;
> +    qemuAgentPtr agent;
> +    char *hostname = NULL;
> +
> +    virCheckFlags(0, NULL);
> +
> +    if (!(vm = qemuDomObjFromDomain(dom)))
> +        return NULL;
> +
> +    if (virDomainGetHostnameEnsureACL(dom->conn, vm->def) < 0)
> +        goto cleanup;
> +
> +    if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_QUERY) < 0)
> +        goto cleanup;
> +
> +    if (virDomainObjCheckActive(vm) < 0)
> +        goto endjob;
> +
> +    if (!qemuDomainAgentAvailable(vm, true))
> +        goto endjob;
> +
> +    agent = qemuDomainObjEnterAgent(vm);
> +    ignore_value(qemuAgentGetHostname(agent, &hostname));
> +    qemuDomainObjExitAgent(vm, agent);
> +
> + endjob:
> +    qemuDomainObjEndAgentJob(vm);
> +
> + cleanup:
> +    virDomainObjEndAPI(&vm);
> +    return hostname;
> +}
> +
> +

Ironically the 2 blanks lines were done here ;-)

>  static int
>  qemuDomainGetTime(virDomainPtr dom,
>                    long long *seconds,
> @@ -21955,6 +21994,7 @@ static virHypervisorDriver qemuHypervisorDriver = {
>      .connectGetCPUModelNames = qemuConnectGetCPUModelNames, /* 1.1.3 */
>      .domainFSFreeze = qemuDomainFSFreeze, /* 1.2.5 */
>      .domainFSThaw = qemuDomainFSThaw, /* 1.2.5 */
> +    .domainGetHostname = qemuDomainGetHostname, /* 4.7.0 */

This'll be 4.8.0.

Again, simple enough for me to adjust before pushing once 4.8.0 opens.

You'll still need to post the news.xml changes once it opens and maybe
you can work up patches to work through those things I pointed out in
the review of patch 1.

    Reviewed-by: John Ferlan <jferlan at redhat.com>

John

>      .domainGetTime = qemuDomainGetTime, /* 1.2.5 */
>      .domainSetTime = qemuDomainSetTime, /* 1.2.5 */
>      .nodeGetFreePages = qemuNodeGetFreePages, /* 1.2.6 */
>