Re: [Qemu-devel] [PATCH v3 01/20] nbd: produce a better error if neither host nor port is passed

[Eric Blake <eblake@redhat.com>]

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On 02/17/2014 06:43 AM, Paolo Bonzini wrote:
> Before:
>     $ qemu-io-old
>     qemu-io-old> open -r -o file.driver=nbd
>     qemu-io-old: can't open device (null): Could not open image: Invalid argument
>     $ ./qemu-io-old
>     qemu-io-old> open -r -o file.driver=nbd,file.host=foo,file.path=bar
>     path and host may not be used at the same time.
>     qemu-io-old: can't open device (null): Could not open image: Invalid argument
> 

> +    if (qdict_haskey(options, "path") == qdict_haskey(options, "host")) {
> +        if (qdict_haskey(options, "path")) {
>              qerror_report(ERROR_CLASS_GENERIC_ERROR, "path and host may not "
>                            "be used at the same time.");

Pre-existing, but we tend to not use trailing '.' in error messages...

> -            return -EINVAL;
> +        } else {
> +            qerror_report(ERROR_CLASS_GENERIC_ERROR, "one of path and host "
> +                          "must be specified.");

so you might as well fix the old one and not add a new instance of it.

But that's minor enough that I don't mind:

Reviewed-by: Eric Blake <eblake@redhat.com>

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


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