Re: [PATCH net-next 1/5] net: bridge: constify 'struct bin_attribute'

[Nikolay Aleksandrov <razor@blackwall.org>]

On 12/16/24 13:30, 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>
> ---
>  net/bridge/br_sysfs_br.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
> index ea733542244c7e7feeffef3c993404529ba88559..c1176a5e02c43ce32cb3dc152e9aa08eb535a419 100644
> --- a/net/bridge/br_sysfs_br.c
> +++ b/net/bridge/br_sysfs_br.c
> @@ -1002,7 +1002,7 @@ static const struct attribute_group bridge_group = {
>   * Returns the number of bytes read.
>   */
>  static ssize_t brforward_read(struct file *filp, struct kobject *kobj,
> -			      struct bin_attribute *bin_attr,
> +			      const struct bin_attribute *bin_attr,
>  			      char *buf, loff_t off, size_t count)
>  {
>  	struct device *dev = kobj_to_dev(kobj);
> @@ -1023,10 +1023,10 @@ static ssize_t brforward_read(struct file *filp, struct kobject *kobj,
>  	return n;
>  }
>  
> -static struct bin_attribute bridge_forward = {
> +static const struct bin_attribute bridge_forward = {
>  	.attr = { .name = SYSFS_BRIDGE_FDB,
>  		  .mode = 0444, },
> -	.read = brforward_read,
> +	.read_new = brforward_read,
>  };
>  
>  /*
> 

Acked-by: Nikolay Aleksandrov <razor@blackwall.org>