linux-kernel - Re: [RFC][Patch 2/3]integrity: IMA as an integrity service provider

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Message-ID: <Line.LNX.4.64.0706192217040.19316@localhost.localdomain>
Date:	Tue, 19 Jun 2007 22:18:26 -0400 (EDT)
From:	James Morris <jmorris@...ei.org>
To:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
cc:	linux-kernel@...r.kernel.org, safford@...son.ibm.com,
	serue@...ux.vnet.ibm.com, zohar@...ibm.com
Subject: Re: [RFC][Patch 2/3]integrity: IMA as an integrity service provider

On Mon, 18 Jun 2007, Mimi Zohar wrote:


> +/* what could we exclude
> + *   - non-executable/non-library files ?
> + *   - /proc /dev ?
> + * Only measure files opened for read-only or execute
> + */
> +static int skip_measurement(struct inode *inode, int mask)
> +{
> +	if ((inode->i_sb->s_magic == PROC_SUPER_MAGIC) ||
> +	    (inode->i_sb->s_magic == SYSFS_MAGIC)) {
> +		return 1;	/*can't measure */
> +	}

I'm pretty sure you should skip measurement for many more pseudo 
filesystems than this.



- James
-- 
James Morris
<jmorris@...ei.org>
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