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Date: Thu, 27 Mar 2014 21:40:49 -0600
From: Eric Blake <eblake AT redhat DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: open(O_RDWR) and lseek() fail
References: <op DOT xderrfffdyj81a AT monster DOT itedn32a DOT localdomain>
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On 03/27/2014 07:29 PM, Roy wrote:
> Hello list,
>=20
> I wonder why lseek(SEEK_CUR) on open(O_RDWR) fails with errno=3D22, the
> code works on Linux:
>=20
> #include <stdio.h>
> #include <errno.h>
> #include <stdlib.h>
> #include <fcntl.h>
> int main(int argc, char** argv){

Where's #include <unistd.h>?  It fails because you are missing the
prototype for lseeks, which means that the C compiler is trying to call
it with 'int offset' instead of 'off_t offset'.  Compile with -Wall.

>=20
> Whats wrong with cygwin?

Rather, fix the bugs in your code, and let the compiler help you.

--=20
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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