Date: Tue, 4 Aug 2009 09:27:06 +0000 From: Maslan <maslanbsd@gmail.com> To: Max Laier <max@love2party.net> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: sosend() and mbuf Message-ID: <319cceca0908040227hf9a0f92jbf05b11e9f974994@mail.gmail.com> In-Reply-To: <200908040138.14743.max@love2party.net> References: <319cceca0908030119i3432a495ya60aa431dab0e1b1@mail.gmail.com> <86k51k4kvl.fsf@ds4.des.no> <86fxc84ksj.fsf@ds4.des.no> <200908040138.14743.max@love2party.net>
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man kthread says:
The kthread_create() function is used to create a kernel thread. The new
thread shares its address space with process 0, the swapper process, a=
nd
runs in kernel mode only.
However, when i checked the pid & tid of the new created thread it was
not the same as the parent nor as the proc0 & thread0
simple printf() gives:
swap procid=3D0, threadid=3D0
procid=3D1680, threadid=3D100089
procid=3D1681, threadid=3D100090 <--- created by kthread_create()
2009/8/3 Max Laier <max@love2party.net>:
> On Tuesday 04 August 2009 00:03:40 Dag-Erling Sm=F8rgrav wrote:
>> Dag-Erling Sm=F8rgrav <des@des.no> writes:
>> > One thing that springs to mind is that kern_open() will dereference
>> > td->td_proc, and AFAIK kthread_create() does not associate the thread
>> > with a process.
>>
>> This is wrong, and contradicts what I wrote further down. Just ignore
>> it.
>
> IIRC, kernel threads don't have root.
>
> --
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