On Mon, 2006-04-03 at 00:26 +0200, Vincenzo Mallozzi wrote:
> --- taha siddiqi <tawushafeez@xxxxxxxxx> wrote:
>
> > Hi
> >
> > Same answer, "please explain the situation !!"
> >
> > taha
> >
> > Thanks.
>
> The array I want to pass from kernel space to user
> space contains pid_t elements.
> First, I pass the length of the array from user space
> to kernel space.
> Then, I build the array with the given length filling
> it with the pid of processes I need to monitor.
> Finally, I've to pass this array of pids to the user
> space.
> I hope I've well explained the situation.
> Thanks all.
> Vincenzo Mallozzi.
>
Well, I think I get you now....
Correct me if I am wrong...
data buffer
USER_SPACE ------------> KERNEL SPACE [fill data with pid_t]
^ |
| |
*------<----------------*
data buffer
Why do we need to pass the data buffer to kernel ?
Does it contain any information that kernel needs ?
if not, then that step can be avoided ?
Then you just need a read call implementation of
struct file_operations {}.
taha
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