linux-kernel - Re: [PATCH] Introduce O

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Message-ID: <Pine.LNX.4.64.0706011510220.26938@winds.org>
Date:	Fri, 1 Jun 2007 15:17:03 -0400 (EDT)
From:	Byron Stanoszek <bstanoszek@...time.com>
To:	Kyle McMartin <kyle@...isc-linux.org>
cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Ulrich Drepper <drepper@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, mingo@...e.hu,
	torvalds@...ux-foundation.org, Chris Zankel <chris@...kel.net>,
	parisc-linux@...ts.parisc-linux.org
Subject: Re: [PATCH] Introduce O_CLOEXEC (take >2)

On Thu, 31 May 2007, Kyle McMartin wrote:

> On Fri, Jun 01, 2007 at 11:38:40AM +1000, Stephen Rothwell wrote:
>> This also breaks Alpha (which uses 02000000 for O_DIRECT) and parisc
>> (which uses 02000000 for O_RSYNC).  So you ether need to choose a
>> different value or define O_CLOEXEC for those two architectures.
>>
>
> That's easy enough to fix...
>
> Signed-off-by: Kyle McMartin <kyle@...isc-linux.org>
>
> diff --git a/include/asm-parisc/fcntl.h b/include/asm-parisc/fcntl.h
> index 317851f..4ca0fb0 100644
> --- a/include/asm-parisc/fcntl.h
> +++ b/include/asm-parisc/fcntl.h
> @@ -14,6 +14,7 @@
> #define O_DSYNC		01000000 /* HPUX only */
> #define O_RSYNC		02000000 /* HPUX only */
> #define O_NOATIME	04000000
> +#define O_CLOEXEC	08000000 /* set close_on_exec */
>
> #define O_DIRECTORY	00010000 /* must be a directory */
> #define O_NOFOLLOW	00000200 /* don't follow links */

These are octal values, so you really want to use 010000000 instead of
08000000. :-)

While looking at that file further, I noticed these two flags share the same
value. I don't know DMAPI/XDSM, but could they potentially conflict?

#define O_NOATIME       04000000
#define O_INVISIBLE     04000000 /* invisible I/O, for DMAPI/XDSM */

Regards,
  -Byron

--
Byron Stanoszek                         Ph: (330) 644-3059
Systems Programmer                      Fax: (330) 644-8110
Commercial Timesharing Inc.             Email: byron@...time.com
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