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Date: Sat, 28 Mar 2020 22:25:47 +0100
From: Alexey Gladkov <gladkov.alexey@...il.com>
To: Kees Cook <keescook@...omium.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
Kernel Hardening <kernel-hardening@...ts.openwall.com>,
Linux API <linux-api@...r.kernel.org>,
Linux FS Devel <linux-fsdevel@...r.kernel.org>,
Linux Security Module <linux-security-module@...r.kernel.org>,
Akinobu Mita <akinobu.mita@...il.com>,
Alexander Viro <viro@...iv.linux.org.uk>,
Alexey Dobriyan <adobriyan@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Andy Lutomirski <luto@...nel.org>,
Daniel Micay <danielmicay@...il.com>,
Djalal Harouni <tixxdz@...il.com>,
"Dmitry V . Levin" <ldv@...linux.org>,
"Eric W . Biederman" <ebiederm@...ssion.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Ingo Molnar <mingo@...nel.org>,
"J . Bruce Fields" <bfields@...ldses.org>,
Jeff Layton <jlayton@...chiereds.net>,
Jonathan Corbet <corbet@....net>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH v10 7/9] proc: move hidepid values to uapi as they are
user interface to mount
On Sat, Mar 28, 2020 at 01:41:02PM -0700, Kees Cook wrote:
> diff --git a/include/uapi/linux/proc_fs.h b/include/uapi/linux/proc_fs.h
> > new file mode 100644
> > index 000000000000..dc6d717aa6ec
> > --- /dev/null
> > +++ b/include/uapi/linux/proc_fs.h
> > @@ -0,0 +1,13 @@
> > +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> > +#ifndef _UAPI_PROC_FS_H
> > +#define _UAPI_PROC_FS_H
> > +
> > +/* definitions for hide_pid field */
> > +enum {
> > + HIDEPID_OFF = 0,
> > + HIDEPID_NO_ACCESS = 1,
> > + HIDEPID_INVISIBLE = 2,
> > + HIDEPID_NOT_PTRACEABLE = 4,
> > +};
> > +
> > +#endif
> > --
> > 2.25.2
> >
>
> Should the numeric values still be UAPI if there is string parsing now?
I think yes, because these are still valid hidepid= values.
--
Rgrds, legion
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