linux-kernel - [PATCH net-next 2/5] net: phy: ks8995: constify 'struct bin

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

Message-Id: <20241216-sysfs-const-bin_attr-net-v1-2-ec460b91f274@weissschuh.net>
Date: Mon, 16 Dec 2024 12:30:09 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Roopa Prabhu <roopa@...dia.com>, 
 Nikolay Aleksandrov <razor@...ckwall.org>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>, Andrew Lunn <andrew@...n.ch>, 
 Heiner Kallweit <hkallweit1@...il.com>, 
 Russell King <linux@...linux.org.uk>, Kalle Valo <kvalo@...nel.org>, 
 Manish Chopra <manishc@...vell.com>, Rahul Verma <rahulv@...vell.com>, 
 GR-Linux-NIC-Dev@...vell.com, Andrew Lunn <andrew+netdev@...n.ch>, 
 Shahed Shaikh <shshaikh@...vell.com>
Cc: bridge@...ts.linux.dev, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH net-next 2/5] net: phy: ks8995: constify 'struct
 bin_attribute'

The sysfs core now allows instances of 'struct bin_attribute' to be
moved into read-only memory. Make use of that to protect them against
accidental or malicious modifications.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 drivers/net/phy/spi_ks8995.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/phy/spi_ks8995.c b/drivers/net/phy/spi_ks8995.c
index 7196e927c2cd8bd73ef2492260182d48daac19ef..076a370be849e00c57a3be0bbce83c4665c49593 100644
--- a/drivers/net/phy/spi_ks8995.c
+++ b/drivers/net/phy/spi_ks8995.c
@@ -289,7 +289,7 @@ static int ks8995_reset(struct ks8995_switch *ks)
 }

 static ssize_t ks8995_registers_read(struct file *filp, struct kobject *kobj,
-	struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count)
+	const struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count)
 {
 	struct device *dev;
 	struct ks8995_switch *ks8995;
@@ -301,7 +301,7 @@ static ssize_t ks8995_registers_read(struct file *filp, struct kobject *kobj,
 }

 static ssize_t ks8995_registers_write(struct file *filp, struct kobject *kobj,
-	struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count)
+	const struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count)
 {
 	struct device *dev;
 	struct ks8995_switch *ks8995;
@@ -401,8 +401,8 @@ static const struct bin_attribute ks8995_registers_attr = {
 		.mode   = 0600,
 	},
 	.size   = KS8995_REGS_SIZE,
-	.read   = ks8995_registers_read,
-	.write  = ks8995_registers_write,
+	.read_new   = ks8995_registers_read,
+	.write_new  = ks8995_registers_write,
 };

 /* ------------------------------------------------------------------------ */

-- 
2.47.1