The patch titled
w1: don't allow arbitrary users to remove w1 devices
has been added to the -mm tree. Its filename is
w1-dont-allow-arbitrary-users-to-remove-w1-devices.patch
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Subject: w1: don't allow arbitrary users to remove w1 devices
From: Brian Swetland <swetland@xxxxxxxxxx>
The search/pullup/add/remove device attributes were 0666 which would allow
arbitrary users to affect the 1 wire bus. Change to 0664 to prevent that.
I found this patch in the Android tree, apparently this has never been
sent upstream so doing it now.
Signed-off-by: Brian Swetland <swetland@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxxxxxx>
Cc: Evgeniy Polyakov <johnpol@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/w1/w1.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff -puN drivers/w1/w1.c~w1-dont-allow-arbitrary-users-to-remove-w1-devices drivers/w1/w1.c
--- a/drivers/w1/w1.c~w1-dont-allow-arbitrary-users-to-remove-w1-devices
+++ a/drivers/w1/w1.c
@@ -517,10 +517,10 @@ static W1_MASTER_ATTR_RO(max_slave_count
static W1_MASTER_ATTR_RO(attempts, S_IRUGO);
static W1_MASTER_ATTR_RO(timeout, S_IRUGO);
static W1_MASTER_ATTR_RO(pointer, S_IRUGO);
-static W1_MASTER_ATTR_RW(search, S_IRUGO | S_IWUGO);
-static W1_MASTER_ATTR_RW(pullup, S_IRUGO | S_IWUGO);
-static W1_MASTER_ATTR_RW(add, S_IRUGO | S_IWUGO);
-static W1_MASTER_ATTR_RW(remove, S_IRUGO | S_IWUGO);
+static W1_MASTER_ATTR_RW(search, S_IRUGO | S_IWUSR | S_IWGRP);
+static W1_MASTER_ATTR_RW(pullup, S_IRUGO | S_IWUSR | S_IWGRP);
+static W1_MASTER_ATTR_RW(add, S_IRUGO | S_IWUSR | S_IWGRP);
+static W1_MASTER_ATTR_RW(remove, S_IRUGO | S_IWUSR | S_IWGRP);
static struct attribute *w1_master_default_attrs[] = {
&w1_master_attribute_name.attr,
_
Patches currently in -mm which might be from swetland@xxxxxxxxxx are
w1-dont-allow-arbitrary-users-to-remove-w1-devices.patch
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