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Date: Sat, 7 Jul 2012 22:22:17 +0400
From: Vasily Kulikov <segoon@...nwall.com>
To: owl-dev@...ts.openwall.com
Subject: Re: status of 2.6.32-based kernel
Solar,
On Sat, Jul 07, 2012 at 06:41 +0400, Solar Designer wrote:
> When you make these changes to the old util-linux:
>
> -extern ext2_loff_t ext2_llseek(unsigned int fd, ext2_loff_t offset,
> - unsigned int origin);
> +#define ext2_llseek lseek
>
> I guess you rely on -D_FILE_OFFSET_BITS=64, or otherwise they would be
> unsafe on 32-bit systems, right? I've just checked that our build log
> of util-linux for i686 shows that -D_FILE_OFFSET_BITS=64 is in fact
> being used - although I did not check whether it's used on 100% of the
> source files or not. Did you?
It is used in all calls to gcc.
> Where does it come from? Standard
> Makefile of util-linux (without our patches)?
A standard one.
Modern versions of util-linux use plain calls to lseek(). All calls to
ext2_llseek() are replaced with lseek(). I used #define for the patch
simplicity.
Thanks,
--
Vasily
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