Re: Communication between kernel and user application

[Ed L Cashin <ecashin@xxxxxxxxxx>]

amith <amith@xxxxxxxxxxxxxxx> writes:

> 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.
> 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.

I hear relayfs is good for large amounts of data.

-- 
  Ed L Cashin <ecashin@xxxxxxxxxx>


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