Re: [PATCH] clocksource: Fix permissions for available_clocksource

From: john stultz
Date: Fri May 02 2008 - 14:32:17 EST



On Fri, 2008-05-02 at 12:49 +0200, Heiko Carstens wrote:
> From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
>
> 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.
>
> Cc: John Stultz <johnstul@xxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>

Ah, good catch.

Acked-by: John Stultz <johnstul@xxxxxxxxxx>


> ---
> kernel/time/clocksource.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> Index: linux-2.6/kernel/time/clocksource.c
> ===================================================================
> --- linux-2.6.orig/kernel/time/clocksource.c
> +++ linux-2.6/kernel/time/clocksource.c
> @@ -474,7 +474,7 @@ sysfs_show_available_clocksources(struct
> static SYSDEV_ATTR(current_clocksource, 0600, sysfs_show_current_clocksources,
> sysfs_override_clocksource);
>
> -static SYSDEV_ATTR(available_clocksource, 0600,
> +static SYSDEV_ATTR(available_clocksource, 0400,
> sysfs_show_available_clocksources, NULL);
>
> static struct sysdev_class clocksource_sysclass = {

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