linux-kernel - Re: [rfc 3/7] procfs: Add ability to plugin auxiliary fdinfo providers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4FF3F332.5030302@parallels.com>
Date:	Wed, 04 Jul 2012 11:39:30 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	Cyrill Gorcunov <gorcunov@...nvz.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Al Viro <viro@...IV.linux.org.uk>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	James Bottomley <jbottomley@...allels.com>
Subject: Re: [rfc 3/7] procfs: Add ability to plugin auxiliary fdinfo providers

On 06/27/2012 03:01 PM, Cyrill Gorcunov wrote:
> This patch brings ability to plugin auxiliary fdinfo providers.
> For example in further patches eventfd, evenpoll and fsnotify
> will print out information associated with files.
> 
> This feature is CONFIG_CHECKPOINT_RESTORE guarded to eliminate
> overhead for those who don't need it at all (this
> unfortunately makes patch bigger than I wanted).
> 
> Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
> CC: Al Viro <viro@...IV.linux.org.uk>
> CC: Alexey Dobriyan <adobriyan@...il.com>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: Pavel Emelyanov <xemul@...allels.com>
> CC: James Bottomley <jbottomley@...allels.com>
> ---
>  fs/proc/fd.c            |  208 ++++++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/proc_fs.h |   28 ++++++
>  2 files changed, 236 insertions(+)

How about introducing one more file_operations member and call it in the
seq_show() (if exists)? Only inotify, eventfd and eventpoll will implement
one. This will allow to avoid all this complexity with drivers.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/