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Message-ID: <5253199B.3000109@nec-labs.com>
Date: Mon, 7 Oct 2013 16:29:15 -0400
From: Steve Rago <sar@...-labs.com>
To: David Miller <davem@...emloft.net>
CC: <luto@...capital.net>, <netdev@...r.kernel.org>,
<mtk.manpages@...il.com>, <ebiederm@...ssion.com>
Subject: Re: bug in passing file descriptors
On 10/07/2013 03:42 PM, David Miller wrote:
> There is no compatability issue.
>
> 32-bit tasks will always see the 4-byte align/length.
> 64-bit tasks will always see the 8-byte align/length.
>
Really? So when I compile my application on a 32-bit Linux box and then try to run it on a 64-bit Linux box, you're not
going to overrun my buffer when CMSG_SPACE led me to allocate an insufficient amount of memory needed to account for
padding on the 64-bit platform?
By the way, FreeBSD, Mac OS X, and Solaris all behave as I described, so if you're happy with Linux behaving
differently, then I'll stop wasting bandwidth.
Steve
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