On Friday 31 August 2007 15:25:40 you wrote:
> On 8/30/07, Clemens Kolbitsch <[EMAIL PROTECTED]> wrote:
> > Hi!
> > Just a short question: What is the correct method of copying large areas
> > of memory from userspace into userspace when running in kernel-mode?
>
> relayfs?
no... I'm copying user-memory to user-memory, not kernel-to-user, however
running the code in kernel-mode.
what i wanted to know is how to check the access-rights...
i didn't get any other answers, so for now i'm just using
if (access_ok(VERIFY_READ, from, PAGE_SIZE) &&
access_ok(VERIFY_WRITE, to, PAGE_SIZE))
{
memcpy(to, from, PAGE_SIZE);
}
and hope that this is the *correct* way to do it...
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
