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Date: Mon, 29 Jun 2015 12:05:35 -0400
From: Rich Felker <>
Subject: Re: fseek EOVERFLOW

On Mon, Jun 29, 2015 at 05:31:27PM +0200, Szabolcs Nagy wrote:
> the kernel side should fix this.. unless they consider
> /dev/zero a special device where netative offset is valid,
> and work correctly on regular files.
> if lseek is conforming then i think fseek would work too.

I missed that it was operating on /dev/zero. I suspect the kernel
considers all offsets (negative and positive) valid for /dev/zero.
Obviously this makes the return value of the lseek syscall ambiguous
(is it an error value or a small negative number?) so I think, if this
is the case, it's a bug that should be fixed on the kernel side.


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