linux-ext4 - Re: Updated fsx.c program (fixed fallocate)

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Message-ID: <4AC6C7C2.8030706@redhat.com>
Date:	Fri, 02 Oct 2009 22:40:50 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	nicholas.dokos@...com
CC:	Mingming <cmm@...ibm.com>, Andreas Dilger <adilger@....com>,
	linux-ext4@...r.kernel.org, Eric Sandeen <esandeen@...hat.com>,
	Subrata Modak <subrata@...ux.vnet.ibm.com>,
	Dave Jones <davej@...hat.com>, linux-fsdevel@...r.kernel.org
Subject: Re: Updated fsx.c program (fixed fallocate)

Nick Dokos wrote:
> Mingming wrote:
>>> I think that
>>>
>>> #define _GNU_SOURCE
>>>
>>> will pull in the glibc headers' definition rather than doing our own....
>>>
>> Oh? that's sounds good...
>>
>> I tried to replace above with 
>> #define _GNU_SOURCE	1
>>
>> gcc complained O_DIRECT is still not defined. what did I missing?
>>
> 
> 
> ,----
> | #define _GNU_SOURCE 1
> | 
> | #include <fcntl.h>
> `----
> 
> should do it.
> 
> Nick

yep, works for me as long as I define it ahead of any #includes (not 
sure just fcntl is enough, but anyway; just put it at the top).

-Eric

--- fsx.c.orig	2009-10-02 22:40:15.816142278 -0500
+++ fsx.c	2009-10-02 22:40:26.886145268 -0500
@@ -42,6 +42,8 @@
   *
   */

+#define _GNU_SOURCE
+
  #include <sys/types.h>
  #include <sys/stat.h>
  #if defined(_UWIN) || defined(__linux__)
--
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