Messages in this thread | | | Date | Wed, 18 Jan 2012 13:19:15 +0400 | From | Pavel Emelyanov <> | Subject | Re: [RFC] syscalls, x86: Add __NR_kcmp syscall |
| |
> I think Eric only said gt/lt compare is useful. We don't need to expose bare > pointer order. example, kcmp(rotate(ptr, per-task-random-value)) is enough > hide the critical information. I think.
The per-task might break thinks up in case
(tsk1->file != tsk2->file) && (rotate(tsk1->file, tsk1->random) == rotate(tsk2->file, tsk2->rotate))
but I agree, that the overall idea of comparing not bare pointers, but those poisoned with some global value can address the Peter's concerns about rootkits.
Thanks, Pavel
| |