linux-kernel - [PATCH 04/20] mach-ux500: mbox-db5500: world-writable sysfs fifo file

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Date:	Fri,  4 Feb 2011 15:23:23 +0300
From:	Vasiliy Kulikov <segoon@...nwall.com>
To:	linux-kernel@...r.kernel.org
Cc:	security@...nel.org,
	Srinidhi Kasagar <srinidhi.kasagar@...ricsson.com>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 04/20] mach-ux500: mbox-db5500: world-writable sysfs fifo file

Don't allow everybody to use a modem.

Signed-off-by: Vasiliy Kulikov <segoon@...nwall.com>
---
 Cannot compile the driver, so it is not tested at all.

 arch/arm/mach-ux500/mbox-db5500.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-ux500/mbox-db5500.c b/arch/arm/mach-ux500/mbox-db5500.c
index cbf1571..402c00d 100644
--- a/arch/arm/mach-ux500/mbox-db5500.c
+++ b/arch/arm/mach-ux500/mbox-db5500.c
@@ -168,7 +168,7 @@ static ssize_t mbox_read_fifo(struct device *dev,
 	return sprintf(buf, "0x%X\n", mbox_value);
 }
 
-static DEVICE_ATTR(fifo, S_IWUGO | S_IRUGO, mbox_read_fifo, mbox_write_fifo);
+static DEVICE_ATTR(fifo, S_IWUSR | S_IRUGO, mbox_read_fifo, mbox_write_fifo);
 
 static int mbox_show(struct seq_file *s, void *data)
 {
-- 
1.7.0.4

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