netdev - Re: [PATCH] ipv4: netfilter: always let NUL terminated string ended by '\0'

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Message-ID: <20130523110832.GB22553@localhost>
Date:	Thu, 23 May 2013 13:08:32 +0200
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	Chen Gang <gang.chen@...anux.com>
Cc:	kaber@...sh.net, kuznet@....inr.ac.ru, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, David Miller <davem@...emloft.net>,
	netfilter-devel@...r.kernel.org, netfilter@...r.kernel.org,
	coreteam@...filter.org, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] ipv4: netfilter: always let NUL terminated string ended
 by '\0'

On Fri, May 17, 2013 at 04:39:15PM +0800, Chen Gang wrote:
> 
> For NUL terminated string, better always be sure of ended by '\0'.
> 
> 'pm' is 'struct ulog_packet_msg_t' which may be copied to user mode
> (defined in "include/uapi/..."), so can not use strlcpy() instead of.

loginfo->prefix is always nul-terminated, as this is validated in
checkentry. I don't think the kernel will take a non nul-terminated
device name either.
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