linux-kernel - [PATCH] platform/x86: samsung-laptop: set debugfs blobs to read only

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210504123139.45101-1-wsa+renesas@sang-engineering.com>
Date:   Tue,  4 May 2021 14:31:39 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-kernel@...r.kernel.org
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Corentin Chary <corentin.chary@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <mgross@...ux.intel.com>,
        platform-driver-x86@...r.kernel.org
Subject: [PATCH] platform/x86: samsung-laptop: set debugfs blobs to read only

Those blobs can only be read. So, don't confuse users with 'writable'
flags.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---

Found while working with blobs myself. I don't have the HW.

 drivers/platform/x86/samsung-laptop.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
index d5cec6e35bb8..7e1dedde6dab 100644
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -1301,13 +1301,13 @@ static void samsung_debugfs_init(struct samsung_laptop *samsung)
 			   &samsung->debug.data.d2);
 	debugfs_create_u8("d3", S_IRUGO | S_IWUSR, root,
 			  &samsung->debug.data.d3);
-	debugfs_create_blob("data", S_IRUGO | S_IWUSR, root,
+	debugfs_create_blob("data", S_IRUGO, root,
 			    &samsung->debug.data_wrapper);
-	debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR, root,
+	debugfs_create_blob("f0000_segment", S_IRUSR, root,
 			    &samsung->debug.f0000_wrapper);
 	debugfs_create_file("call", S_IFREG | S_IRUGO, root, samsung,
 			    &samsung_laptop_call_fops);
-	debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR, root,
+	debugfs_create_blob("sdiag", S_IRUGO, root,
 			    &samsung->debug.sdiag_wrapper);
 }
 
-- 
2.30.0