RE: Accessing a user space variable from a kernel module

[Ilker Gokhan <ilker.gokhan@linux.org.tr>]

Hi,

If you want to access directly to user memory from kernel. You should use
kiobuf mechanism. You can find more information about this subject into
Device Driver book. I guess the chapter is MMAP.

Best regards,
Ilker G.

-----Original Message-----
From: Jeremy Andrus [mailto:jandru39@calvin.edu]
Sent: Friday, August 02, 2002 5:16 PM
To: Kernelnewbies
Subject: Re: Accessing a user space variable from a kernel module


Everyone's responses have been helpful so far :-)
I have another question. I've decided to use the 'copy_from_user' 
function, but I don't know how I'm supposed to discover the userspace 
address I need to copy from. The data I want to get into the kernel is 
in a variable in a userspace function.

	-Jeremy


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Jeremy C. Andrus
http://www.jeremya.com/
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