Re: userspace vs. kernelspace address

[Om]

On Fri, Jan 28, 2005 at 01:40:51PM -0800, Rock Gordon wrote:
> Hi everbody,
> 
> Thanks for your replies.
> 
> However I think my copy_to_user and copy_from_user are
> failing since the kernel-mode thread is copying data
> into another process's address space, and I am not
> sure how to do this. Do the get_fs() and set_fs()
> combinations let you do that? If not, then how do I do
My idea is on kernel thread is limited. But I think it is not possible to
any userspace address from any kernel thread because they do not have access
to it. Their proc_struct->mm field is empty.
I am not sure whether set_fs and get_fs help in this case.

HTH,
Om
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/