> Hi all,
>
> How do i read and write to a file from a kernel module.?? I am trying to
> write a module, which on intializing will read over through a flat file
> and store the contents of file in some data structure.
>
> bye,
> prakash
You don't and it's not necessary. You use the module's ioctl() function
(which you define) to take data from a user-mode program when you want
to start the module.
Trivial case:
cprogram()
{
system("insmod my_module");
fd = open("/my/device", O_WHATEVER);
ioctl(fd, INSERT_MY_DATA, buffer);
ioctl(fd, TEST_MY_DEVICE, &results);
close(fd);
}
Cheers,
Dick Johnson
Penguin : Linux version 2.3.13 on an i686 machine (400.59 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.
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