linux-kernel - Re: [PATCH] proc: add "personality" to process status file

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Message-ID: <20081004174843.6fe48a8e@infradead.org>
Date:	Sat, 4 Oct 2008 17:48:43 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Kees Cook <kees.cook@...onical.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] proc: add "personality" to process status file

On Sat, 4 Oct 2008 17:42:33 -0700
Kees Cook <kees.cook@...onical.com> wrote:

> On Sat, Oct 04, 2008 at 04:42:39PM -0700, Arjan van de Ven wrote:
> > On Sat, 4 Oct 2008 15:02:20 -0700
> > Kees Cook <kees.cook@...onical.com> wrote:
> > > Nothing else seemed appropriate, but I could make a brand new proc
> > > file, if that's sensible.  "status_private" ?
> > 
> > how about a file called "personality" that has each set bit as an
> > ascii version ?
> > (one per line maybe)
> 
> Well, it's a one-to-many due to how the personality types are defined,
> so doing a bitfield-to-ASCII-names conversion wouldn't really work
> out:
> 
>         PER_SCOSVR3 =           0x0003 | STICKY_TIMEOUTS |
>                                          WHOLE_SECONDS | SHORT_INODE,
>         PER_OSR5 =              0x0003 | STICKY_TIMEOUTS |
> WHOLE_SECONDS, ...
>         PER_BSD =               0x0006,
>         PER_SUNOS =             0x0006 | STICKY_TIMEOUTS,
> 
> But I can certainly just make it a stand-alone file with just the
> bitfield.  Or, I can still do the conversion and ignore PER_OSR5 and
> PER_SUNOS.

well.. if "you" as kernel can't really make out what it is, how is poor
userspace supposed to do it ?



-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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