linux-kernel - [PATCH 08/20] mfd: ab3100: world-writable debugfs *

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Message-Id: <b5dceec3591728e7dfa4d9fb2e978780e55420c5.1296818921.git.segoon@openwall.com>
Date:	Fri,  4 Feb 2011 15:23:36 +0300
From:	Vasiliy Kulikov <segoon@...nwall.com>
To:	linux-kernel@...r.kernel.org
Cc:	security@...nel.org, Linus Walleij <linus.walleij@...ricsson.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 08/20] mfd: ab3100: world-writable debugfs *_priv files

Don't allow everybody to change device hardware registers.

Signed-off-by: Vasiliy Kulikov <segoon@...nwall.com>
---
 Compile tested only.

 drivers/mfd/ab3100-core.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 4193af5..1707d22 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -613,7 +613,7 @@ static void ab3100_setup_debugfs(struct ab3100 *ab3100)
 	ab3100_get_priv.ab3100 = ab3100;
 	ab3100_get_priv.mode = false;
 	ab3100_get_reg_file = debugfs_create_file("get_reg",
-				S_IWUGO, ab3100_dir, &ab3100_get_priv,
+				S_IWUSR, ab3100_dir, &ab3100_get_priv,
 				&ab3100_get_set_reg_fops);
 	if (!ab3100_get_reg_file) {
 		err = -ENOMEM;
@@ -623,7 +623,7 @@ static void ab3100_setup_debugfs(struct ab3100 *ab3100)
 	ab3100_set_priv.ab3100 = ab3100;
 	ab3100_set_priv.mode = true;
 	ab3100_set_reg_file = debugfs_create_file("set_reg",
-				S_IWUGO, ab3100_dir, &ab3100_set_priv,
+				S_IWUSR, ab3100_dir, &ab3100_set_priv,
 				&ab3100_get_set_reg_fops);
 	if (!ab3100_set_reg_file) {
 		err = -ENOMEM;
-- 
1.7.0.4

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