[libvirt] [PATCH v2 03/13] virsh: Add serial/parallel device name completion to console command

[Michal Privoznik]

On 11/10/20 10:50 AM, Lin Ma wrote:
> Signed-off-by: Lin Ma <lma at suse.com>
> ---
>   tools/virsh-completer-domain.c | 55 ++++++++++++++++++++++++++++++++++
>   tools/virsh-completer-domain.h |  4 +++
>   tools/virsh-domain.c           |  1 +
>   3 files changed, 60 insertions(+)
> 
> diff --git a/tools/virsh-completer-domain.c b/tools/virsh-completer-domain.c
> index f653471b89..dc66317561 100644
> --- a/tools/virsh-completer-domain.c
> +++ b/tools/virsh-completer-domain.c
> @@ -656,3 +656,58 @@ virshDomainVcpulistViaAgentCompleter(vshControl *ctl,
>       virshDomainFree(dom);
>       return ret;
>   }
> +
> +char **
> +virshDomainConsoleCompleter(vshControl *ctl,
> +                            const vshCmd *cmd,
> +                            unsigned int flags)
> +{
> +    virshControlPtr priv = ctl->privData;
> +    g_autoptr(xmlDoc) xmldoc = NULL;
> +    g_autoptr(xmlXPathContext) ctxt = NULL;
> +    int nserials;
> +    int nparallels;
> +    g_autofree xmlNodePtr *serials = NULL;
> +    g_autofree xmlNodePtr *parallels = NULL;
> +    size_t i;
> +    size_t offset = 0;
> +    VIR_AUTOSTRINGLIST tmp = NULL;
> +
> +    virCheckFlags(0, NULL);
> +
> +    if (!priv->conn || virConnectIsAlive(priv->conn) <= 0)
> +        return NULL;
> +
> +    if (virshDomainGetXML(ctl, cmd, 0, &xmldoc, &ctxt) < 0)
> +        return NULL;
> +
> +    nserials = virXPathNodeSet("./devices/serial", ctxt, &serials);
> +    if (nserials < 0)
> +        return NULL;
> +
> +    nparallels = virXPathNodeSet("./devices/parallel", ctxt, &parallels);
> +    if (nparallels < 0)
> +        return NULL;
> +
> +    tmp = g_new0(char *, nserials + nparallels + 1);
> +
> +    for (i = 0; i < nserials; i++) {
> +        ctxt->node = serials[i];
> +
> +        if (STRNEQ(virXPathString("string(./@type)", ctxt), "pty"))

virXPathString() returns an allocated string which is leaked here ..

> +            continue;
> +
> +        tmp[offset++] = virXPathString("string(./alias/@name)", ctxt);
> +    }
> +
> +    for (i = 0; i < nparallels; i++) {
> +        ctxt->node = parallels[i];
> +
> +        if (STRNEQ(virXPathString("string(./@type)", ctxt), "pty"))

.. and here.

> +            continue;
> +
> +        tmp[offset++] = virXPathString("string(./alias/@name)", ctxt);
> +    }
> +
> +    return g_steal_pointer(&tmp);
> +}
> diff --git a/tools/virsh-completer-domain.h b/tools/virsh-completer-domain.h
> index d5021f6aa6..02fea2fe94 100644
> --- a/tools/virsh-completer-domain.h
> +++ b/tools/virsh-completer-domain.h
> @@ -94,3 +94,7 @@ char ** virshDomainCpulistCompleter(vshControl *ctl,
>   char ** virshDomainVcpulistViaAgentCompleter(vshControl *ctl,
>                                                const vshCmd *cmd,
>                                                unsigned int flags);
> +
> +char ** virshDomainConsoleCompleter(vshControl *ctl,
> +                                    const vshCmd *cmd,
> +                                    unsigned int flags);
> diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
> index 675d96440d..022dbdca3c 100644
> --- a/tools/virsh-domain.c
> +++ b/tools/virsh-domain.c
> @@ -2960,6 +2960,7 @@ static const vshCmdOptDef opts_console[] = {
>       VIRSH_COMMON_OPT_DOMAIN_FULL(VIR_CONNECT_LIST_DOMAINS_ACTIVE),
>       {.name = "devname", /* sc_prohibit_devname */
>        .type = VSH_OT_STRING,
> +     .completer = virshDomainConsoleCompleter,
>        .help = N_("character device name")
>       },
>       {.name = "force",
> 

Michal