On Sun, Aug 19, 2018 at 01:13:05AM +0300, Nir Soffer wrote:
> -    if (r == -1 && errno != EOPNOTSUPP) {
> +    if (r == 0)
> +      return r;
> +
> +    if (errno != EOPNOTSUPP) {
>        nbdkit_error ("zero: %m");
> +      return r;

I think these cases where we "return r" are rather awkward
(there are more of them in this commit).

I think we should return 0 or return -1 as appropriate.  It seems
clearer to me and has less risk of going wrong in future
if we rearrange the code.

Rich.

--
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