linux-kernel - Re: [patch] add file position info to proc

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Message-Id: <20070327143629.9c8953db.akpm@linux-foundation.org>
Date:	Tue, 27 Mar 2007 14:36:29 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Miklos Szeredi <miklos@...redi.hu>, linux-kernel@...r.kernel.org
Subject: Re: [patch] add file position info to proc

On Tue, 27 Mar 2007 21:24:20 +0000
Pavel Machek <pavel@....cz> wrote:

> Hi!
> 
> > From: Miklos Szeredi <mszeredi@...e.cz>
> > 
> > This patch adds support for finding out the current file position,
> > open flags and possibly other info in the future.
> > 
> > These new entries are added:
> > 
> >   /proc/PID/fdinfo/FD
> >   /proc/PID/task/TID/fdinfo/FD
> > 
> > For each fd the information is provided in the following format:
> > 
> > pos:	1234
> > flags:	0100002
> 
> Octal? Maybe we should use more traditional hex here?

Good point.  The O_foo flags are per-arch, so this field has the potential
to be subtly different on different architectures, which is unpleasing.

> Or even list flags by name?

urg.  Simple enough to do (lookup table, please).  But is it worth it? 
Perhaps just remove that field?
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