# Re: \[PATCH 2/5\] kernfs: implement kernfs\_walk\_and\_get()

- From: David Miller \<davem@davemloft.net\>
- Date: 2015-11-17 21:20:52 
- List: netdev
- Page: https://ratatoskr.run/netdev/2015/11/4622758
- Thread: https://ratatoskr.run/netdev/2015/11/4622696/t.md

```text
From: Tejun Heo <tj@kernel.org>
Date: Tue, 17 Nov 2015 14:40:37 -0500

> +	static char path_buf[PATH_MAX];	/* protected by kernfs_mutex */
> +	int len = strlen(path);
 ...
> +	if (len >= PATH_MAX)
> +		return NULL;
> +
> +	memcpy(path_buf, path, len + 1);

	static char path_buf[PATH_MAX];	/* protected by kernfs_mutex */
	int len = strlcpy(path_buf, path, PATH_MAX);
 ...
	if (len >= PATH_MAX)
		return NULL;
```