netdev - Re: [PATCH 2/5] kernfs: implement kernfs_walk_and

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Message-Id: <20151117.162040.1412296298973879057.davem@davemloft.net>
Date:	Tue, 17 Nov 2015 16:20:40 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	tj@...nel.org
Cc:	pablo@...filter.org, kaber@...sh.net, kadlec@...ckhole.kfki.hu,
	lizefan@...wei.com, hannes@...xchg.org, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org, coreteam@...filter.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-team@...com, daniel@...earbox.net,
	daniel.wagner@...-carit.de, nhorman@...driver.com,
	gregkh@...uxfoundation.org
Subject: Re: [PATCH 2/5] kernfs: implement kernfs_walk_and_get()

From: Tejun Heo <tj@...nel.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;
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