Re: [Qemu-devel] [PATCH V4 4/7] qmp: Allow to change password on names block driver states.

[Luiz Capitulino <lcapitulino@redhat.com>]

On Tue, 10 Dec 2013 15:25:07 +0100
Kevin Wolf <kwolf@redhat.com> wrote:

> My objection to your approach is strong because Benoît already sent an
> alternative which I believe is less worse because with it, arguments
> actually mean what their names tell instead of having additional bools
> for "oh, and I said A, but I didn't mean it, I really want B".

Current proposal:

{ 'command': 'block_passwd', 'data': {'*device': 'str',
                                      '*node-name': 'str', 'password': 'str'} }

When I look at it, I ask myself:

 - What happens when device=NULL?

 - What happens when node-name=NULL?

 - What happens when device=NULL and node-name=NULL?

 - What happens when device != NULL and node-node != NULL?

 - What happens when device != NULL but node-node=NULL?

 - What happens when device=NULL but node-node != NULL?

My proposal:

{ 'command': 'block_passwd', 'data': {'device': 'str',
                                      '*device-is-node': 'bool', 'password': 'str'} }

 - What happens when device-is-node=NULL?

 - What happens when device-is-node != NULL?

PS: I'm not NACKing anything. My review to this series started with a
    "what about" question. I did voice my objections against this
    proposal, but didn't NACK it. Besides you're a maintainer as much
    as I am, so I could NACK this as much as you could push this
    through your tree ignoring review.