Date: Fri, 25 Aug 2017 10:20:09 -0700 From: Conrad Meyer <cem@freebsd.org> To: Alan Somers <asomers@freebsd.org> Cc: src-committers <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org> Subject: Re: svn commit: r322893 - head/bin/dd Message-ID: <CAG6CVpVf8TNqnErZzoofuqy-TA9cXoZgf2W8Y2J2vNa63Vmu7Q@mail.gmail.com> In-Reply-To: <CAOtMX2gXBcQyxTr_KivoGoKBP6UXL-sq9KhhB89fBgESfWV0yg@mail.gmail.com> References: <201708251531.v7PFVtoZ038242@repo.freebsd.org> <CAG6CVpXmL95eAjf4rXTL8QqnLcu5aQPRZ4cwk3sLGUSR35jnBg@mail.gmail.com> <CAOtMX2gXBcQyxTr_KivoGoKBP6UXL-sq9KhhB89fBgESfWV0yg@mail.gmail.com>
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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@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@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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