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From: Rainer Weikusat <rweikusat@mssgmbh.com>
Newsgroups: comp.os.linux.development.system
Subject: Re: per process llseek offset
Date: Mon, 02 May 2011 13:07:47 +0100
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"dr.oktopus" <blindwilly@freeonline.zzn.com> writes:
> as you know offset in the file structure is shared amongst father and
> child processes. How can I get a per-process specific offset so that
> a child lseek is not influenced by the same operation done by the
> father process?

Assuming that your inherited file descriptor is stored in a variable
named fd (and the type of file it refers to supports this), opening
the file /proc/self/<fd> (eg /proc/self/3 if fd == 3) results in a
file descriptor referring to the same file but with a newly create
file structure.