Quoting Michael Edward Christman ([EMAIL PROTECTED]): > I'm trying to write between the application level and the kernel. I am > using version 2.0.34 and am attempting to use memcpy_tofs and > memcpy_fromfs, but am having some trouble. If I use these functions in > the application level, what do I use for the *to and *from variables. I > assume that you can use a FILE for whatever is in the user space,
Yes, it's the second argument of the foo_read or foo_write. > but > where is the data stored in the kernel? Is it something like /dev/file?, > and if so, how do I assign a pointer to it? It's just an automatic (I think that's the jargon; ordinary) variable declared in the routine. Or are you talking large transfers? Then you'd have to kmalloc some memory. One of the nice things about 2.2 kernels is that get/put_user do all the VERIFY_... checking for you (assuming you're doing single value read/writes). > WBTE > (Wet Behind The Ears) ditto. Cheers, -- Email: [EMAIL PROTECTED] Tel: +44 1908 653 739 Fax: +44 1908 655 151 Snail: David Wright, Earth Science Dept., Milton Keynes, England, MK7 6AA Disclaimer: These addresses are only for reaching me, and do not signify official stationery. Views expressed here are either my own or plagiarised.
