Re: User mode

Previous message: Chris Wright: "Re: chmod from LSM"
In reply to: Dumitru Stama: "User mode"
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chrisat_private

* Dumitru Stama (dicsat_private) wrote:
> Hello everybody
> I have a question that might sound a bit strange but i need to
> implement something like this in a linux kernel module without any
> help from ring3 processes (daemons or simple processes).
> Can i use something (even a hack) to allocate memory below the
> 0C0000000h memory space ? Using kmalloc i can only get pages that are
> accessible from the kernel address space and i can't use that memory
> for storing the parameters to call sys_open for example (i get bad
> address error, ofcourse).

Well, set_fs/get_fs can help here, but why are you calling system calls
from the kernel?

> Do you have any suggestions ? I am using Nasm to develop my module.

Could you not write it in C?  This seems very strange.

thanks,
-chris
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