Re: [Qemu-devel] [PATCH V3] block: introduce BlockDriver.bdrv_needs_filename to enable some drivers.

[Eric Blake]

On 09/24/2013 06:27 AM, Benoît Canet wrote:
> Some drivers will have driver specifics options but no filename.
> This new bool allow the block layer to treat them correctly.
> 
> The .bdrv_needs_filename is set in drivers not having .bdrv_parse_filename and
> not having .bdrv_open.
> 
> The first exception to this rule will be the quorum driver.
> 
> Signed-off-by: Benoit Canet <address@hidden>
> ---

> +++ b/include/block/block_int.h
> @@ -73,6 +73,11 @@ struct BlockDriver {
>      /* Any driver implementing this callback is expected to be able to handle
>       * NULL file names in its .bdrv_open() implementation */
>      void (*bdrv_parse_filename)(const char *filename, QDict *options, Error 
> **errp);
> +    /* Drivers not implementing bdrv_parse_filename nor bdrv_open should have
> +     * this field set to true excepted the ones only defined by their childs 
> bs.
> +     * An example of the last type will be the quorum block driver.

Grammar:

Drivers not implementing ... set to true, except ones that are defined
only by their child's bs.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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