linux-kernel - [PATCH net-next 4/5] netxen_nic: constify 'struct bin

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Message-Id: <20241216-sysfs-const-bin_attr-net-v1-4-ec460b91f274@weissschuh.net>
Date: Mon, 16 Dec 2024 12:30:11 +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 4/5] netxen_nic: 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/ethernet/qlogic/netxen/netxen_nic_main.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
index 9cff0a8ffb2c55de195983051e4e7f8568528c0f..3383ee1dad14e2cb40062b27f32a7cffb6f3fac2 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
@@ -2832,7 +2832,7 @@ netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
 
 static ssize_t
 netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr,
+		const struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = kobj_to_dev(kobj);
@@ -2860,7 +2860,7 @@ netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
 
 static ssize_t
 netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr,
+		const struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = kobj_to_dev(kobj);
@@ -2901,7 +2901,7 @@ netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
 
 static ssize_t
 netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr,
+		const struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = kobj_to_dev(kobj);
@@ -2922,7 +2922,7 @@ netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
 }
 
 static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr, char *buf,
+		const struct bin_attribute *attr, char *buf,
 		loff_t offset, size_t size)
 {
 	struct device *dev = kobj_to_dev(kobj);
@@ -2946,20 +2946,20 @@ static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
 static const struct bin_attribute bin_attr_crb = {
 	.attr = { .name = "crb", .mode = 0644 },
 	.size = 0,
-	.read = netxen_sysfs_read_crb,
-	.write = netxen_sysfs_write_crb,
+	.read_new = netxen_sysfs_read_crb,
+	.write_new = netxen_sysfs_write_crb,
 };
 
 static const struct bin_attribute bin_attr_mem = {
 	.attr = { .name = "mem", .mode = 0644 },
 	.size = 0,
-	.read = netxen_sysfs_read_mem,
-	.write = netxen_sysfs_write_mem,
+	.read_new = netxen_sysfs_read_mem,
+	.write_new = netxen_sysfs_write_mem,
 };
 
 static ssize_t
 netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr,
+		const struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = kobj_to_dev(kobj);
@@ -3082,7 +3082,7 @@ netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
 static const struct bin_attribute bin_attr_dimm = {
 	.attr = { .name = "dimm", .mode = 0644 },
 	.size = sizeof(struct netxen_dimm_cfg),
-	.read = netxen_sysfs_read_dimm,
+	.read_new = netxen_sysfs_read_dimm,
 };
 
 

-- 
2.47.1