linux-kernel - Re: Inserting code from userspace to kernel space

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Message-ID: <ee101c360805242037y333b3e17n705ef9b1572125c9@mail.gmail.com>
Date:	Sun, 25 May 2008 11:37:54 +0800
From:	"Shuduo Sang" <sangshuduo@...il.com>
To:	devzero@....de
Cc:	bosko.radivojevic@...il.com, linux-kernel@...r.kernel.org
Subject: Re: Inserting code from userspace to kernel space

On Fri, May 23, 2008 at 10:30 PM,  <devzero@....de> wrote:
>>> I know this sounds quite weird, but maybe there is a project that can help us ;)
>>>
>>
>>actually you can implement a parser/interpretor, whatever you name it,
>>in kernel space. And you can send the
>>function code from user space to kernel space by device driver
>>interface. the parser can parse that and do something
>>practical function in kernel.
>>
>>I have worked on a similar task in a product powered by linux. It works great.
>
> any pointer to the sourcecode so bosko (and others) can profit from that ?
>

someone does not want to leak propertied algorithm out with GPL. This
can be a way to protect.

>
>
>
> List:       linux-kernel
> Subject:    Re: Inserting code from userspace to kernel space
> From:       "Shuduo Sang" <sangshuduo () gmail ! com>
> Date:       2008-05-22 16:04:35
> Message-ID: ee101c360805220904h1c69db12q3048d0347d27c461 () mail ! gmail ! com
> [Download message RAW]
>
> On Thu, May 22, 2008 at 8:41 PM, Bosko Radivojevic
> <bosko.radivojevic@...il.com> wrote:
>> Hi!
>>
>> I'm looking for a way to insert code from user space to the kernel
>> space, but without using kernel module. Actually, we are working on a
>> system that has to allow end user to change part of code (one or two
>> functions) that is executed from the kernel space.
>>
>> For now we have two different kernel modules, one exporting a function
>> which another module uses. Process of compiling kernel module is quite
>> ineligible for standard end user (along with the requirement to
>> support multi platform cross compiling) compared to just cross
>> compiling a simple code that doesn't use any libraries than libc.
>>
>> I know this sounds quite weird, but maybe there is a project that can help us ;)
>>
>
> actually you can implement a parser/interpretor, whatever you name it,
> in kernel space. And you can send the
> function code from user space to kernel space by device driver
> interface. the parser can parse that and do something
> practical function in kernel.
>
> I have worked on a similar task in a product powered by linux. It works great.
>
>> Sincerely,
>> Bosko
>> --
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