[Qemu-devel] Re: [PATCH 3/3] Fail if detecting an unknown option

[Kevin Wolf <kwolf@redhat.com>]

Am 06.12.2010 09:02, schrieb Jes Sorensen:
> On 12/03/10 13:30, Kevin Wolf wrote:
>> Am 02.12.2010 18:46, schrieb Jes.Sorensen@redhat.com:
>>> diff --git a/qemu-img.c b/qemu-img.c
>>> index d0dc445..f2e1c94 100644
>>> --- a/qemu-img.c
>>> +++ b/qemu-img.c
>>> @@ -304,6 +304,12 @@ static int img_create(int argc, char **argv)
>>>      flags = 0;
>>>      for(;;) {
>>>          c = getopt(argc, argv, "F:b:f:he6o:");
>>> +        /*
>>> +         * Fail if we detect an unknown argument
>>> +         */
>>> +        if (c == '?') {
>>> +            return 1;
>>> +        }
>>>          if (c == -1) {
>>>              break;
>>>          }
>>
>> Why not making it another case in the switch statement below instead of
>> an additional if?
> 
> There is a perfectly logical explanation for that. Doing that would
> require for me to have clue, which is a bit much to expect :)
> 
> That said, we should really do the same for the c == -1 case as well.

That's what I thought at first, too. But then the break relates to the
switch instead of the for, so it would have to become a goto to a new
label. Probably not a big improvement...

Kevin