On Sat, Jul 28, 2012 at 5:24 PM, David Xu <listlog2...@gmail.com> wrote:
> On 2012/7/28 5:50, Garrett Cooper wrote:
>>
>> The following reply was made to PR kern/170203; it has been noted by
>> GNATS.
>>
>> From: Garrett Cooper <yaneg...@gmail.com>
>> To: bug-follo...@freebsd.org, yaneg...@gmail.com
>> Cc:
>> Subject: Re: kern/170203: [kern] piped dd's don't behave sanely
>> when
>> dealing with a fifo
>> Date: Fri, 27 Jul 2012 14:47:47 -0700
>>
>> Hi David!
>> I'll give the patches you provided a shot this weekend.
>
> FIFO pipe is quite broken! Beside the bug you have reported, there is
> another bug,
> when a writer closed the pipe, select() on reader side will never return !
> I am curious that so long time, nobody found the bugs, does it because FIFO
> is seldom used by people ?
Hmmm.. that's unfortunate. If you have a test program you can
provide then I can test on a 7.x variant of FreeBSD as well as FreeBSD
8.3 (I'm curious as to whether or not it's fallout from recent
refactoring related to pipe(2), which I don't believe made it back to
8.x).
Thanks!
-Garrett
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