netdev - Re: [RFC] Allow LSM to use IP address/port number.

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Date:	Mon, 09 Jul 2007 00:26:29 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	from-netdev@...ove.sakura.ne.jp
Cc:	netdev@...r.kernel.org, linux-security-module@...r.kernel.org,
	chrisw@...s-sol.org
Subject: Re: [RFC] Allow LSM to use IP address/port number.

From: Tetsuo Handa <from-netdev@...ove.sakura.ne.jp>
Date: Mon, 09 Jul 2007 14:33:01 +0900

> @@ -649,8 +660,16 @@ int sock_recvmsg(struct socket *sock, st
>  	init_sync_kiocb(&iocb, NULL);
>  	iocb.private = &siocb;
>  	ret = __sock_recvmsg(&iocb, sock, msg, size, flags);
> -	if (-EIOCBQUEUED == ret)
> +	if (-EIOCBQUEUED == ret) {
>  		ret = wait_on_sync_kiocb(&iocb);
> +		/* I can now check security_socket_post_recvmsg(). */
> +		if (ret >= 0) {
> +			int err = security_socket_post_recvmsg(sock, msg, size,
> +							       flags);
> +			if (err)
> +				ret = err;
> +		}
> +	}
>  	return ret;
>  }

I don't think it's such a hot idea to return errors if the
wait_on_sync_kiocb() has returned success.

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