[sheepdog] [PATCH] dog: let "dog vdi cache" subcommands parse arguments in a correct manner

[Liu Yuan]

On Fri, Dec 20, 2013 at 10:56:34AM +0900, Hitoshi Mitake wrote:
> Current subcommands of "dog vdi cache" can cause segmentation faults
> because they don't check an index of argv.
> 

I tried every subcommand for 'vdi cache' and don't get the segfault, which
exactly commond cause the segfalt?

Thanks
Yuan