Re: [Xen-devel] [PATCH 2/6] libxl: add libxl__qmp_run_command_flexarray() function

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Sep 08, 2016 at 09:20:22AM +0200, Juergen Gross wrote:
> Add a function libxl__qmp_run_command_flexarray() to run a qmp command
> with an array of arguments. The arguments are name-value pairs stored
> in a flexarray.
> 
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

> ---
>  tools/libxl/libxl_internal.h |  3 +++
>  tools/libxl/libxl_qmp.c      | 16 ++++++++++++++++
>  2 files changed, 19 insertions(+)
> 
> diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
> index 3f29aa6..ecbfdad 100644
> --- a/tools/libxl/libxl_internal.h
> +++ b/tools/libxl/libxl_internal.h
> @@ -1753,6 +1753,9 @@ typedef struct libxl__qmp_handler libxl__qmp_handler;
>   */
>  _hidden libxl__qmp_handler *libxl__qmp_initialize(libxl__gc *gc,
>                                                    uint32_t domid);
> +_hidden int libxl__qmp_run_command_flexarray(libxl__gc *gc, int domid,
> +                                             const char *cmd,
> +                                             flexarray_t *array);
>  /* ask to QEMU the serial port information and store it in xenstore. */
>  _hidden int libxl__qmp_query_serial(libxl__qmp_handler *qmp);
>  _hidden int libxl__qmp_pci_add(libxl__gc *gc, int d, libxl_device_pci 
> *pcidev);
> diff --git a/tools/libxl/libxl_qmp.c b/tools/libxl/libxl_qmp.c
> index 0d8d5f4..f8addf9 100644
> --- a/tools/libxl/libxl_qmp.c
> +++ b/tools/libxl/libxl_qmp.c
> @@ -827,6 +827,22 @@ static int qmp_run_command(libxl__gc *gc, int domid,
>      return rc;
>  }
>  
> +int libxl__qmp_run_command_flexarray(libxl__gc *gc, int domid,
> +                                     const char *cmd, flexarray_t *array)
> +{
> +    libxl__json_object *args = NULL;
> +    int i;
> +    void *name, *value;
> +
> +    for (i = 0; i < array->count; i += 2) {
> +        flexarray_get(array, i, &name);
> +        flexarray_get(array, i + 1, &value);
> +        qmp_parameters_add_string(gc, &args, (char *)name, (char *)value);
> +    }
> +
> +    return qmp_run_command(gc, domid, cmd, args, NULL, NULL);
> +}
> +
>  int libxl__qmp_pci_add(libxl__gc *gc, int domid, libxl_device_pci *pcidev)
>  {
>      libxl__qmp_handler *qmp = NULL;
> -- 
> 2.6.6
> 

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