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From: Samir Bellabes <sam@synack.fr>
To: Patrick McHardy <kaber@trash.net>
Cc: linux-security-module@vger.kernel.org, jamal <hadi@cyberus.ca>,
	Evgeniy Polyakov <zbr@ioremap.net>,
	Neil Horman <nhorman@tuxdriver.com>,
	netdev@vger.kernel.org, netfilter-devel@vger.kernel.org
Subject: Re: [RFC 7/9] snet: introduce snet_netlink.c and snet_netlink.h
Date: Wed, 13 Jan 2010 05:28:30 +0100	[thread overview]
Message-ID: <m2vdf6iq6p.fsf@ssh.synack.fr> (raw)
In-Reply-To: <4B420464.3040301@trash.net> (Patrick McHardy's message of "Mon, 04 Jan 2010 16:08:20 +0100")

Patrick McHardy <kaber@trash.net> writes:

> Samir Bellabes wrote:
>> +++ b/security/snet/include/snet_netlink.h
>> +	SNET_A_VERSION,		/* (NLA_U32) the snet protocol version	*/
>
> You're using this to check for a "compliant protocol version" below.
> This shouldn't be needed as any protocol changes need to be done
> in a compatible fashion.

what if userspace lib is using a old protocol version ? kernel and
userspace will use incompatible protocol, which may result in errors.

The idea of this 'version' mecanism is to prevent such
incompatibilities, even if the userspace is (un)volontary not using the
good library (which may be the one tagged in the same time as the kernel
running)

sam

  parent reply	other threads:[~2010-01-13  4:28 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-02 13:04 [RFC 0/9] snet: Security for NETwork syscalls Samir Bellabes
2010-01-02 13:04 ` [RFC 1/9] lsm: add security_socket_closed() Samir Bellabes
2010-01-04 18:33   ` Serge E. Hallyn
2010-01-02 13:04 ` [RFC 2/9] Revert "lsm: Remove the socket_post_accept() hook" Samir Bellabes
2010-01-04 18:36   ` Serge E. Hallyn
2010-01-05  0:31     ` Tetsuo Handa
2010-01-05  0:38       ` Serge E. Hallyn
2010-01-02 13:04 ` [RFC 3/9] snet: introduce security/snet, Makefile and Kconfig changes Samir Bellabes
2010-01-04 18:39   ` Serge E. Hallyn
2010-01-06  6:04     ` Samir Bellabes
2010-01-02 13:04 ` [RFC 4/9] snet: introduce snet_core.c and snet.h Samir Bellabes
2010-01-04 14:43   ` Patrick McHardy
2010-01-06 18:23     ` Samir Bellabes
2010-01-06 19:46     ` Samir Bellabes
2010-01-06 19:58       ` Evgeniy Polyakov
2010-01-23  2:07         ` Samir Bellabes
2010-01-23  2:18           ` Evgeniy Polyakov
2010-01-07 14:34     ` Samir Bellabes
2010-01-07 14:53     ` Samir Bellabes
2010-01-07 14:58       ` Samir Bellabes
2010-01-08  4:32     ` Samir Bellabes
2010-01-04 18:42   ` Serge E. Hallyn
2010-01-06  6:12     ` Samir Bellabes
2010-01-02 13:04 ` [RFC 5/9] snet: introduce snet_event.c and snet_event.h Samir Bellabes
2010-01-02 20:09   ` Evgeniy Polyakov
2010-01-02 23:38     ` Samir Bellabes
2010-01-04 19:08   ` Serge E. Hallyn
2010-01-08  7:21     ` Samir Bellabes
2010-01-08 15:34       ` Serge E. Hallyn
2010-01-08 17:44         ` Samir Bellabes
2010-01-08 17:51           ` Samir Bellabes
2010-01-08 18:10             ` Serge E. Hallyn
2010-01-02 13:04 ` [RFC 6/9] snet: introduce snet_hooks.c and snet_hook.h Samir Bellabes
2010-01-02 20:13   ` Evgeniy Polyakov
2010-01-03 11:10     ` Samir Bellabes
2010-01-03 19:16       ` Stephen Hemminger
2010-01-03 22:26         ` Samir Bellabes
2010-01-02 13:04 ` [RFC 7/9] snet: introduce snet_netlink.c and snet_netlink.h Samir Bellabes
2010-01-04 15:08   ` Patrick McHardy
2010-01-13  4:19     ` Samir Bellabes
2010-01-13  4:28     ` Samir Bellabes [this message]
2010-01-13  5:36       ` Patrick McHardy
2010-01-13  4:36     ` Samir Bellabes
2010-01-13  4:41     ` Samir Bellabes
2010-01-13  6:03     ` Samir Bellabes
2010-01-13  6:20     ` Samir Bellabes
2010-01-15  7:02     ` Samir Bellabes
2010-01-15  9:15     ` Samir Bellabes
2010-01-16  1:59     ` Samir Bellabes
2010-01-17  5:42     ` Samir Bellabes
2010-01-23 19:33     ` Samir Bellabes
2010-01-02 13:04 ` [RFC 8/9] snet: introduce snet_verdict.c and snet_verdict.h Samir Bellabes
2010-01-02 13:04 ` [RFC 9/9] snet: introduce snet_utils.c and snet_utils.h Samir Bellabes
2010-01-03 16:57 ` [RFC 0/9] snet: Security for NETwork syscalls jamal
2010-01-05  7:26   ` Samir Bellabes
2010-01-05  8:20     ` Tetsuo Handa
2010-01-05 14:09       ` Serge E. Hallyn
2010-01-06  0:23         ` [PATCH] LSM: Update comment on security_sock_rcv_skb Tetsuo Handa
2010-01-06  3:27           ` Serge E. Hallyn
2010-01-10 21:53           ` James Morris
2010-01-10 16:20     ` [RFC 0/9] snet: Security for NETwork syscalls jamal

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