linux-kernel - Re: [PATCH] clocksource: Fix permissions for available

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Message-ID: <20080503122314.GA5996@osiris.boeblingen.de.ibm.com>
Date:	Sat, 3 May 2008 14:23:14 +0200
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	John Stultz <johnstul@...ibm.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clocksource: Fix permissions for available_clocksource

On Fri, May 02, 2008 at 05:34:06PM +0200, Thomas Gleixner wrote:
> On Fri, 2 May 2008, Heiko Carstens wrote:
> > On Fri, May 02, 2008 at 04:36:37PM +0200, Thomas Gleixner wrote:
> > > On Fri, 2 May 2008, Heiko Carstens wrote:
> > > > From: Heiko Carstens <heiko.carstens@...ibm.com>
> > > > 
> > > > File permissions for
> > > > /sys/devices/system/clocksource/clocksource0/available_clocksource
> > > > are 600 which allows write access. But this is in fact a read only
> > > > file. So change permissions to 400.
> > > 
> > > Indeed. The question is whether we should make this 444. There is no
> > > harm, when users can read the info. Same applies for the
> > > current_clocksource entry, making it 644 should be fine.
> > 
> > Sure, I can send an on-top patch for this.
> 
> Yes, please.

Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>
---
 kernel/time/clocksource.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6/kernel/time/clocksource.c
===================================================================
--- linux-2.6.orig/kernel/time/clocksource.c
+++ linux-2.6/kernel/time/clocksource.c
@@ -471,10 +471,10 @@ sysfs_show_available_clocksources(struct
 /*
  * Sysfs setup bits:
  */
-static SYSDEV_ATTR(current_clocksource, 0600, sysfs_show_current_clocksources,
+static SYSDEV_ATTR(current_clocksource, 0644, sysfs_show_current_clocksources,
 		   sysfs_override_clocksource);
 
-static SYSDEV_ATTR(available_clocksource, 0400,
+static SYSDEV_ATTR(available_clocksource, 0444,
 		   sysfs_show_available_clocksources, NULL);
 
 static struct sysdev_class clocksource_sysclass = {
--
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