bug#6268: Suggestion: truncate should allow -r and -s options together

[Voelker, Bernhard]

Pádraig Brady wrote:
> Jim Meyering wrote:
>> what about --ref=non-regular-file ?

> Yes that's safer. st_size is only defined for regular files
> (or shared mem), so I'll only allow regular files.
> I'll push a separate patch soon.

what about --ref=- ?

one wants to have a file with the size
of a partition plus 5G, e.g.
        truncate --ref=/dev/sda5 -s +5G myfile
This will fail and will be rejected with such a patch.
So the user could use:
        truncate --ref=- -s +5G myfile < /dev/sda5

Just a thought ...

Have a nice day,
Berny