Re: [PATCH 2/5] selinux: adds a private inode operation

[Stephen Smalley]

On Sat, 2004-11-20 at 19:13, Jeffrey Mahoney wrote:
> diff -ruNpX dontdiff linux-2.6.9/security/selinux/hooks.c linux-2.6.9.selinux/security/selinux/hooks.c
> --- linux-2.6.9/security/selinux/hooks.c	2004-11-19 14:40:58.000000000 -0500
> +++ linux-2.6.9.selinux/security/selinux/hooks.c	2004-11-20 17:11:22.000000000 -0500
> @@ -740,6 +740,15 @@ static int inode_doinit_with_dentry(stru
>  	if (isec->initialized)
>  		goto out;
>  
> +	if (opt_dentry && opt_dentry->d_parent && opt_dentry->d_parent->d_inode) {
> +		struct inode_security_struct *pisec = opt_dentry->d_parent->d_inode->i_security;
> +		if (pisec->inherit) {
> +			isec->sid = pisec->sid;
> +			isec->initialized = 1;
> +			goto out;
> +		}
> +	}
> +
>  	down(&isec->sem);
>  	hold_sem = 1;
>  	if (isec->initialized)

Actually, isn't this code unnecessary given that patch 3/5 ensures that
the selinux_inode_mark_private() hook is called from
reiserfs_new_inode() on the new inode if the directory is private?  I
think that eliminates the need to perform this test and inheritance in
inode_doinit, which is called by the d_instantiate.

-- 
Stephen Smalley <sds@xxxxxxxxxxxxxx>
National Security Agency

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