svn commit: r322893 - head/bin/dd

Alan Somers asomers at freebsd.org
Fri Aug 25 18:57:39 UTC 2017


That doesn't work either before or after this change.
-Alan

On Fri, Aug 25, 2017 at 11:20 AM, Conrad Meyer <cem at freebsd.org> wrote:
> Well, not negative, just large uint64_t numbers that would be negative
> as off_t (int64_t).
>
> E.g., dd if=/dev/kmem bs=1 iseek=0xfffff...foo count=8.  I think we
> would like that to work.  I don't recall whether it does or not before
> this change.
>
> Best,
> Conrad
>
> On Fri, Aug 25, 2017 at 10:08 AM, Alan Somers <asomers at freebsd.org> wrote:
>> Nope.  Do you mean negative offsets for the iseek argument?  I didn't
>> know you could do that.
>>
>> On Fri, Aug 25, 2017 at 10:59 AM, Conrad Meyer <cem at freebsd.org> wrote:
>>> Hi Alan,
>>>
>>> By any chance did you test this change with /dev/kmem and kernel
>>> addresses ("negative" off_t values)?
>>>
>>> Thanks,
>>> Conrad


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