linux-kernel - [PATCH 4/9] drivers/scsi/pm8001/pm8001_ctl.c: avoid world-writable sysfs files.

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Date:	Tue, 22 Apr 2014 13:03:27 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	linux-kernel@...r.kernel.org
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Lindar Liu <lindar_liu@...sh.com>,
	James Bottomley <JBottomley@...allels.com>
Subject: [PATCH 4/9] drivers/scsi/pm8001/pm8001_ctl.c: avoid world-writable sysfs files.

In line with practice for module parameters, we're adding a build-time
check that sysfs files aren't world-writable.

Cc: Lindar Liu <lindar_liu@...sh.com>
Cc: James Bottomley <JBottomley@...allels.com>
Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
---
 drivers/scsi/pm8001/pm8001_ctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c
index 28b4e8139153..62c884e79409 100644
--- a/drivers/scsi/pm8001/pm8001_ctl.c
+++ b/drivers/scsi/pm8001/pm8001_ctl.c
@@ -729,7 +729,7 @@ static ssize_t pm8001_show_update_fw(struct device *cdev,
 			flash_error_table[i].reason);
 }
 
-static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUGO,
+static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 	pm8001_show_update_fw, pm8001_store_update_fw);
 struct device_attribute *pm8001_host_attrs[] = {
 	&dev_attr_interface_rev,
-- 
1.8.3.2

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