tree 277a688f947d6f79bdac06d76fa07f51f5f878b3
parent 626f84f39d4ae365a44dbbc0d0dd3c7739c3971a
author Kevin Wolf <kwolf@redhat.com> 1392996247 +0100
committer Kevin Wolf <kwolf@redhat.com> 1393017028 +0100

qemu-img: Allow -o help with incomplete argument list

This patch allows using 'qemu-img $subcmd -o help' for the create,
convert and amend subcommands, without specifying the previously
required filename arguments.

Note that it's still allowed and meaningful to specify a filename: An
invocation like 'qemu-img create -o help sheepdog:foo' will also display
options that are provided by the Sheepdog driver.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>