Messages in this thread | | | Date | Tue, 17 Jan 2012 10:47:37 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [RFC] syscalls, x86: Add __NR_kcmp syscall |
| |
On 01/17/2012 06:44 AM, Cyrill Gorcunov wrote: > On Tue, Jan 17, 2012 at 04:38:14PM +0200, Alexey Dobriyan wrote: >> On 1/17/12, Cyrill Gorcunov <gorcunov@gmail.com> wrote: >>> +#define KCMP_EQ 0 >>> +#define KCMP_LT 1 >>> +#define KCMP_GT 2 >> >> LT and GT are meaningless. >> > > I found symbolic names better than open-coded values. But sure, > if this is problem it could be dropped. > > Or you mean that in general anything but 'equal' is useless? >
Why on Earth would user space need to know which order in memory certain kernel objects are?
Keep in mind that this is *exactly* the kind of information which makes rootkits easier.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
| |