On 7/12/06, alfred hitch <alfred.hitch@xxxxxxxxx> wrote:
Hi Folks,
I have to "maintain" an existing kernel module code.
It was written for 2.4 and has a open, read and write calls from
inside kernel module.
sample code being this:
// memory management segment access
fs = get_fs();
set_fs(KERNEL_DS);
// open the file with the firmware for PIC for uploading
if (ifp = open( filename, O_RDONLY, 0 ), ifp < 0)
{
Now, when I am trying to compile same code for 2.6, I am getting
compilation warning and load time error saying
Undefined Symbol: open, read not found ..
I know that ideally one isn't supposed to file operations from inside
kernel modules.
But, this time case is diff. and I have to try to maintain code legacy
(please dont ask me why)
So, without getting into that debate could someone please help me
understand what am I missing.
Can I use open, read call like 2.4 here or not ??
If not, why ??
What other options do I have ?
TIA,
Alfred
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I didn't write any code to test this, but I think that you just need
to call the functions as they are called on the syscall table. If I'm
not wrong, something like sys_open, as they appear on
arch/i386/kernel/syscall_table.S.
You may also need to include include/linux/syscalls.h
Daniel
--
What this world needs is a good five-dollar plasma weapon.
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Kernelnewbies: Help each other learn about the Linux kernel.
Archive: http://mail.nl.linux.org/kernelnewbies/
FAQ: http://kernelnewbies.org/faq/
