linux-kernel - Re: [PATCH] 2.6.38: access permission filesystem 0.24

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Message-ID: <4DA26159.7050902@oracle.com>
Date:	Sun, 10 Apr 2011 19:03:05 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Olaf Dietsche <olaf+list.linux-kernel@...fdietsche.de>
CC:	linux-kernel@...r.kernel.org, Rod Cordova <rcordova@...ernet.org>
Subject: Re: [PATCH] 2.6.38: access permission filesystem 0.24

On 4/10/2011 2:50 PM, Olaf Dietsche wrote:
> This *untested* patch adds a new permission managing file system.
> Furthermore, it adds two modules, which make use of this file system.
>
> One module allows granting capabilities based on user-/groupid. The
> second module allows to grant access to lower numbered ports based on
> user-/groupid, too.
>
> Changes:
> - updated to 2.6.38
>
> This patch is available at:
> <http://www.olafdietsche.de/linux/accessfs/>
>
> and attached inline below.
>
> Regards, Olaf
>
>   Documentation/filesystems/accessfs.txt |   41 +++
>   fs/Kconfig                             |    1 +
>   fs/Makefile                            |    1 +
>   fs/accessfs/Kconfig                    |   63 +++++
>   fs/accessfs/Makefile                   |   11 +
>   fs/accessfs/capabilities.c             |  108 ++++++++
>   fs/accessfs/inode.c                    |  432 ++++++++++++++++++++++++++++++++
>   fs/accessfs/ip.c                       |  101 ++++++++
>   include/linux/accessfs_fs.h            |   42 +++
>   include/net/sock.h                     |   43 ++++
>   net/Kconfig                            |   12 +
>   net/Makefile                           |    1 +
>   net/hooks.c                            |   55 ++++
>   net/ipv4/af_inet.c                     |    2 +-
>   net/ipv6/af_inet6.c                    |    2 +-
>   15 files changed, 913 insertions(+), 2 deletions(-)


+config ACCESSFS_USER_PORTS
+	tristate "User permission based IP ports"
+	depends on ACCESS_FS
+	select NET_HOOKS
+	default n
+	help
+	  If you say Y here, you will be able to control access to IP ports
+	  based on user-/groupid. For this to work, you must say Y
+	  to CONFIG_NET_HOOKS.

That last sentence is handled (in theory) by "select NET_HOOKS", right?

But NET_HOOKS depends on INET && EXPERIMENTAL, so this config should not
select NET_HOOKS unless INET && EXPERIMENTAL are enabled also.

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