diff mbox series

[net-next,5/5] qlcnic: constify 'struct bin_attribute'

Message ID 20241216-sysfs-const-bin_attr-net-v1-5-ec460b91f274@weissschuh.net (mailing list archive)
State New
Delegated to: Johannes Berg
Headers show
Series net: constify 'struct bin_attribute' | expand

Commit Message

Thomas Weißschuh Dec. 16, 2024, 11:30 a.m. UTC 
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@weissschuh.net>
---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c | 70 +++++++++++------------
 1 file changed, 35 insertions(+), 35 deletions(-)

Comments

Simon Horman Dec. 17, 2024, 10:28 a.m. UTC | #1 
On Mon, Dec 16, 2024 at 12:30:12PM +0100, Thomas Weißschuh wrote:
> 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@weissschuh.net>

Reviewed-by: Simon Horman <horms@kernel.org>
Jakub Kicinski Dec. 18, 2024, 3:03 a.m. UTC | #2 
On Mon, 16 Dec 2024 12:30:12 +0100 Thomas Weißschuh wrote:
> -	.read = qlcnic_sysfs_read_pci_config,
> -	.write = NULL,
> +	.read_new = qlcnic_sysfs_read_pci_config,
> +	.write_new = NULL,

Please delete the NULL assignment instead.
diff mbox series

Patch

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c
index 74125188beb82515f57a20ae24dcd526943d05ee..82c357865f19ba8f272426abc09f47b40d6b53da 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c
@@ -264,7 +264,7 @@  static int qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
 }
 
 static ssize_t qlcnic_sysfs_read_crb(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);
@@ -281,7 +281,7 @@  static ssize_t qlcnic_sysfs_read_crb(struct file *filp, struct kobject *kobj,
 }
 
 static ssize_t qlcnic_sysfs_write_crb(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);
@@ -310,7 +310,7 @@  static int qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
 }
 
 static ssize_t qlcnic_sysfs_read_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);
@@ -332,7 +332,7 @@  static ssize_t qlcnic_sysfs_read_mem(struct file *filp, struct kobject *kobj,
 }
 
 static ssize_t qlcnic_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);
@@ -396,7 +396,7 @@  static int validate_pm_config(struct qlcnic_adapter *adapter,
 
 static ssize_t qlcnic_sysfs_write_pm_config(struct file *filp,
 					    struct kobject *kobj,
-					    struct bin_attribute *attr,
+					    const struct bin_attribute *attr,
 					    char *buf, loff_t offset,
 					    size_t size)
 {
@@ -446,7 +446,7 @@  static ssize_t qlcnic_sysfs_write_pm_config(struct file *filp,
 
 static ssize_t qlcnic_sysfs_read_pm_config(struct file *filp,
 					   struct kobject *kobj,
-					   struct bin_attribute *attr,
+					   const struct bin_attribute *attr,
 					   char *buf, loff_t offset,
 					   size_t size)
 {
@@ -539,7 +539,7 @@  static int validate_esw_config(struct qlcnic_adapter *adapter,
 
 static ssize_t qlcnic_sysfs_write_esw_config(struct file *file,
 					     struct kobject *kobj,
-					     struct bin_attribute *attr,
+					     const struct bin_attribute *attr,
 					     char *buf, loff_t offset,
 					     size_t size)
 {
@@ -623,7 +623,7 @@  static ssize_t qlcnic_sysfs_write_esw_config(struct file *file,
 
 static ssize_t qlcnic_sysfs_read_esw_config(struct file *file,
 					    struct kobject *kobj,
-					    struct bin_attribute *attr,
+					    const struct bin_attribute *attr,
 					    char *buf, loff_t offset,
 					    size_t size)
 {
@@ -675,7 +675,7 @@  static int validate_npar_config(struct qlcnic_adapter *adapter,
 
 static ssize_t qlcnic_sysfs_write_npar_config(struct file *file,
 					      struct kobject *kobj,
-					      struct bin_attribute *attr,
+					      const struct bin_attribute *attr,
 					      char *buf, loff_t offset,
 					      size_t size)
 {
@@ -722,7 +722,7 @@  static ssize_t qlcnic_sysfs_write_npar_config(struct file *file,
 
 static ssize_t qlcnic_sysfs_read_npar_config(struct file *file,
 					     struct kobject *kobj,
-					     struct bin_attribute *attr,
+					     const struct bin_attribute *attr,
 					     char *buf, loff_t offset,
 					     size_t size)
 {
@@ -769,7 +769,7 @@  static ssize_t qlcnic_sysfs_read_npar_config(struct file *file,
 
 static ssize_t qlcnic_sysfs_get_port_stats(struct file *file,
 					   struct kobject *kobj,
-					   struct bin_attribute *attr,
+					   const struct bin_attribute *attr,
 					   char *buf, loff_t offset,
 					   size_t size)
 {
@@ -804,7 +804,7 @@  static ssize_t qlcnic_sysfs_get_port_stats(struct file *file,
 
 static ssize_t qlcnic_sysfs_get_esw_stats(struct file *file,
 					  struct kobject *kobj,
-					  struct bin_attribute *attr,
+					  const struct bin_attribute *attr,
 					  char *buf, loff_t offset,
 					  size_t size)
 {
@@ -839,7 +839,7 @@  static ssize_t qlcnic_sysfs_get_esw_stats(struct file *file,
 
 static ssize_t qlcnic_sysfs_clear_esw_stats(struct file *file,
 					    struct kobject *kobj,
-					    struct bin_attribute *attr,
+					    const struct bin_attribute *attr,
 					    char *buf, loff_t offset,
 					    size_t size)
 {
@@ -868,7 +868,7 @@  static ssize_t qlcnic_sysfs_clear_esw_stats(struct file *file,
 
 static ssize_t qlcnic_sysfs_clear_port_stats(struct file *file,
 					     struct kobject *kobj,
-					     struct bin_attribute *attr,
+					     const struct bin_attribute *attr,
 					     char *buf, loff_t offset,
 					     size_t size)
 {
@@ -898,7 +898,7 @@  static ssize_t qlcnic_sysfs_clear_port_stats(struct file *file,
 
 static ssize_t qlcnic_sysfs_read_pci_config(struct file *file,
 					    struct kobject *kobj,
-					    struct bin_attribute *attr,
+					    const struct bin_attribute *attr,
 					    char *buf, loff_t offset,
 					    size_t size)
 {
@@ -938,7 +938,7 @@  static ssize_t qlcnic_sysfs_read_pci_config(struct file *file,
 
 static ssize_t qlcnic_83xx_sysfs_flash_read_handler(struct file *filp,
 						    struct kobject *kobj,
-						    struct bin_attribute *attr,
+						    const struct bin_attribute *attr,
 						    char *buf, loff_t offset,
 						    size_t size)
 {
@@ -1115,7 +1115,7 @@  static int qlcnic_83xx_sysfs_flash_write(struct qlcnic_adapter *adapter,
 
 static ssize_t qlcnic_83xx_sysfs_flash_write_handler(struct file *filp,
 						     struct kobject *kobj,
-						     struct bin_attribute *attr,
+						     const struct bin_attribute *attr,
 						     char *buf, loff_t offset,
 						     size_t size)
 {
@@ -1195,64 +1195,64 @@  static const struct device_attribute dev_attr_beacon = {
 static const struct bin_attribute bin_attr_crb = {
 	.attr = { .name = "crb", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_sysfs_read_crb,
-	.write = qlcnic_sysfs_write_crb,
+	.read_new = qlcnic_sysfs_read_crb,
+	.write_new = qlcnic_sysfs_write_crb,
 };
 
 static const struct bin_attribute bin_attr_mem = {
 	.attr = { .name = "mem", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_sysfs_read_mem,
-	.write = qlcnic_sysfs_write_mem,
+	.read_new = qlcnic_sysfs_read_mem,
+	.write_new = qlcnic_sysfs_write_mem,
 };
 
 static const struct bin_attribute bin_attr_npar_config = {
 	.attr = { .name = "npar_config", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_sysfs_read_npar_config,
-	.write = qlcnic_sysfs_write_npar_config,
+	.read_new = qlcnic_sysfs_read_npar_config,
+	.write_new = qlcnic_sysfs_write_npar_config,
 };
 
 static const struct bin_attribute bin_attr_pci_config = {
 	.attr = { .name = "pci_config", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_sysfs_read_pci_config,
-	.write = NULL,
+	.read_new = qlcnic_sysfs_read_pci_config,
+	.write_new = NULL,
 };
 
 static const struct bin_attribute bin_attr_port_stats = {
 	.attr = { .name = "port_stats", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_sysfs_get_port_stats,
-	.write = qlcnic_sysfs_clear_port_stats,
+	.read_new = qlcnic_sysfs_get_port_stats,
+	.write_new = qlcnic_sysfs_clear_port_stats,
 };
 
 static const struct bin_attribute bin_attr_esw_stats = {
 	.attr = { .name = "esw_stats", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_sysfs_get_esw_stats,
-	.write = qlcnic_sysfs_clear_esw_stats,
+	.read_new = qlcnic_sysfs_get_esw_stats,
+	.write_new = qlcnic_sysfs_clear_esw_stats,
 };
 
 static const struct bin_attribute bin_attr_esw_config = {
 	.attr = { .name = "esw_config", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_sysfs_read_esw_config,
-	.write = qlcnic_sysfs_write_esw_config,
+	.read_new = qlcnic_sysfs_read_esw_config,
+	.write_new = qlcnic_sysfs_write_esw_config,
 };
 
 static const struct bin_attribute bin_attr_pm_config = {
 	.attr = { .name = "pm_config", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_sysfs_read_pm_config,
-	.write = qlcnic_sysfs_write_pm_config,
+	.read_new = qlcnic_sysfs_read_pm_config,
+	.write_new = qlcnic_sysfs_write_pm_config,
 };
 
 static const struct bin_attribute bin_attr_flash = {
 	.attr = { .name = "flash", .mode = 0644 },
 	.size = 0,
-	.read = qlcnic_83xx_sysfs_flash_read_handler,
-	.write = qlcnic_83xx_sysfs_flash_write_handler,
+	.read_new = qlcnic_83xx_sysfs_flash_read_handler,
+	.write_new = qlcnic_83xx_sysfs_flash_write_handler,
 };
 
 #ifdef CONFIG_QLCNIC_HWMON