linux-kernel - Re: [PATCH 02/20] mach-omap2: pm: world-writable debugfs timer files

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Date:	Fri, 04 Feb 2011 14:53:48 -0800
From:	Kevin Hilman <khilman@...com>
To:	Vasiliy Kulikov <segoon@...nwall.com>
Cc:	linux-kernel@...r.kernel.org, security@...nel.org,
	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 02/20] mach-omap2: pm: world-writable debugfs timer files

Vasiliy Kulikov <segoon@...nwall.com> writes:

> Don't allow all users to change timer settings.
>
> Signed-off-by: Vasiliy Kulikov <segoon@...nwall.com>
> ---
>  Cannot compile the driver, so it is not tested at all.

Acked-by: Kevin Hilman <khilman@...com>


>  arch/arm/mach-omap2/pm-debug.c |    8 ++++----
>  1 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
> index 125f565..a5a83b3 100644
> --- a/arch/arm/mach-omap2/pm-debug.c
> +++ b/arch/arm/mach-omap2/pm-debug.c
> @@ -637,14 +637,14 @@ static int __init pm_dbg_init(void)
>  
>  		}
>  
> -	(void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUGO, d,
> +	(void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
>  				   &enable_off_mode, &pm_dbg_option_fops);
> -	(void) debugfs_create_file("sleep_while_idle", S_IRUGO | S_IWUGO, d,
> +	(void) debugfs_create_file("sleep_while_idle", S_IRUGO | S_IWUSR, d,
>  				   &sleep_while_idle, &pm_dbg_option_fops);
> -	(void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUGO, d,
> +	(void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUSR, d,
>  				   &wakeup_timer_seconds, &pm_dbg_option_fops);
>  	(void) debugfs_create_file("wakeup_timer_milliseconds",
> -			S_IRUGO | S_IWUGO, d, &wakeup_timer_milliseconds,
> +			S_IRUGO | S_IWUSR, d, &wakeup_timer_milliseconds,
>  			&pm_dbg_option_fops);
>  	pm_dbg_init_done = 1;
--
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