Re: Re: Communication between kernel and user application

["sanjay kumar" <tousanjay@xxxxxxxxxxxxxx>]

hi

On Tue, 03 Aug 2004 amith wrote :
>Mauricio Lin wrote:
>
>>Hi all,
>>
>>Does anyone know how can i develop a program that
>>communicates with kernel?
>>
>>I would like to develop an application that can read
>>some kernel data structures like task struct?
>>
>>BR,
>>
>>Mauricio Lin.
>>
>              as somebody already mentioned write a new system call , >and the other way would be to use a device file to read and write >something from the kernel. for every read your device_read can read >the task_struct of whichever pid you want the task_struct of , and >your user program could pass the pid or prog name of the process.

Can you please explain this device file read/write method in more detail

>this is a simple and easier way of reading/writing to the kernel. >Read a little about module programming and you can implement it >without much trouble.
>
>hope that helped.
>cheers,
>Amith
>

TIA
sanjayk