netdev - Re: V2 [PATCH] netdevice: Fix wrong string handle in kernel command line parsing

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Date:	Tue, 01 Jul 2008 19:57:30 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	wangchen@...fujitsu.com
Cc:	bhutchings@...arflare.com, netdev@...r.kernel.org
Subject: Re: V2 [PATCH] netdevice: Fix wrong string handle in kernel
 command line parsing

From: Wang Chen <wangchen@...fujitsu.com>
Date: Tue, 01 Jul 2008 08:56:40 +0800

> Ben Hutchings said the following on 2008-6-30 18:25:
> >> -			strcpy(s[i].name, name);
> >> +			strncpy(s[i].name, name, IFNAMSIZ);
> > 
> > I think that strncpy() should be strlcpy(), because strncpy() does not
> > ensure null-termination.
> > 
> 
> Of course. Thanks, Ben.
> 
> v1->v2: Use strlcpy() to ensure s[i].name be null-termination.
> 
> 1. In netdev_boot_setup_add(), a long name will leak.
>    ex. : dev=21,0x1234,0x1234,0x2345,eth123456789verylongname.........
> 2. In netdev_boot_setup_check(), mismatch will happen if s[i].name
>    is a substring of dev->name.
>    ex. : dev=...eth1 dev=...eth11
> 
> Signed-off-by: Wang Chen <wangchen@...fujitsu.com>

Looks good, applied, thanks everyone.
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