[v2,6/9] qom: Implement qom-get HMP command

Reimplement it based on qmp_qom_get() to avoid converting QObjects back
to strings.

Inspired-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hmp-commands.hx | 13 +++++++++++++
 hmp.c           | 22 ++++++++++++++++++++++
 hmp.h           |  1 +
 3 files changed, 36 insertions(+)

On 2015/3/13 0:43, Andreas Färber wrote:
> Reimplement it based on qmp_qom_get() to avoid converting QObjects back
> to strings.
> 
> Inspired-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Andreas Färber <afaerber@suse.de>
> ---
>  hmp-commands.hx | 13 +++++++++++++
>  hmp.c           | 22 ++++++++++++++++++++++
>  hmp.h           |  1 +
>  3 files changed, 36 insertions(+)
> 

Reviewed-by: Gonglei <arei.gonglei@huawei.com>

> diff --git a/hmp-commands.hx b/hmp-commands.hx
> index 3c1915a..6fb6bdb 100644
> --- a/hmp-commands.hx
> +++ b/hmp-commands.hx
> @@ -1671,6 +1671,19 @@ Print QOM properties of object at location @var{path}
>  ETEXI
>  
>      {
> +        .name       = "qom-get",
> +        .args_type  = "path:s,property:s",
> +        .params     = "path property",
> +        .help       = "print QOM property",
> +        .mhandler.cmd  = hmp_qom_get,
> +    },
> +
> +STEXI
> +@item qom-get @var{path} @var{property}
> +Print QOM property @var{property} of object at location @var{path}
> +ETEXI
> +
> +    {
>          .name       = "qom-set",
>          .args_type  = "path:s,property:s,value:s",
>          .params     = "path property value",
> diff --git a/hmp.c b/hmp.c
> index 811f9a3..6db4005 100644
> --- a/hmp.c
> +++ b/hmp.c
> @@ -1879,6 +1879,28 @@ void hmp_qom_list(Monitor *mon, const QDict *qdict)
>      hmp_handle_error(mon, &err);
>  }
>  
> +void hmp_qom_get(Monitor *mon, const QDict *qdict)
> +{
> +    const char *path = qdict_get_str(qdict, "path");
> +    const char *property = qdict_get_str(qdict, "property");
> +    Error *err = NULL;
> +    Object *obj;
> +    char *value;
> +
> +    obj = object_resolve_path(path, NULL);
> +    if (obj == NULL) {
> +        error_set(&err, QERR_DEVICE_NOT_FOUND, path);
> +        hmp_handle_error(mon, &err);
> +        return;
> +    }
> +    value = object_property_print(obj, property, true, &err);
> +    if (err == NULL) {
> +        monitor_printf(mon, "%s\n", value);
> +        g_free(value);
> +    }
> +    hmp_handle_error(mon, &err);
> +}
> +
>  void hmp_qom_set(Monitor *mon, const QDict *qdict)
>  {
>      const char *path = qdict_get_str(qdict, "path");
> diff --git a/hmp.h b/hmp.h
> index 44049e8..a4d0ae4 100644
> --- a/hmp.h
> +++ b/hmp.h
> @@ -96,6 +96,7 @@ void hmp_object_del(Monitor *mon, const QDict *qdict);
>  void hmp_info_memdev(Monitor *mon, const QDict *qdict);
>  void hmp_info_memory_devices(Monitor *mon, const QDict *qdict);
>  void hmp_qom_list(Monitor *mon, const QDict *qdict);
> +void hmp_qom_get(Monitor *mon, const QDict *qdict);
>  void hmp_qom_set(Monitor *mon, const QDict *qdict);
>  void object_add_completion(ReadLineState *rs, int nb_args, const char *str);
>  void object_del_completion(ReadLineState *rs, int nb_args, const char *str);
>