a557af222b
the MAC label referenced from 'struct socket' in the IPv4 and IPv6-based protocols. This permits MAC labels to be checked during network delivery operations without dereferencing inp->inp_socket to get to so->so_label, which will eventually avoid our having to grab the socket lock during delivery at the network layer. This change introduces 'struct inpcb' as a labeled object to the MAC Framework, along with the normal circus of entry points: initialization, creation from socket, destruction, as well as a delivery access control check. For most policies, the inpcb label will simply be a cache of the socket label, so a new protocol switch method is introduced, pr_sosetlabel() to notify protocols that the socket layer label has been updated so that the cache can be updated while holding appropriate locks. Most protocols implement this using pru_sosetlabel_null(), but IPv4/IPv6 protocols using inpcbs use the the worker function in_pcbsosetlabel(), which calls into the MAC Framework to perform a cache update. Biba, LOMAC, and MLS implement these entry points, as do the stub policy, and test policy. Reviewed by: sam, bms Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
307 lines
9.2 KiB
C
307 lines
9.2 KiB
C
/*
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* ng_btsocket.c
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*
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* Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: ng_btsocket.c,v 1.4 2003/09/14 23:29:06 max Exp $
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bitstring.h>
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#include <sys/errno.h>
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#include <sys/domain.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <sys/taskqueue.h>
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#include <netgraph/ng_message.h>
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#include <netgraph/netgraph.h>
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#include "ng_bluetooth.h"
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#include "ng_hci.h"
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#include "ng_l2cap.h"
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#include "ng_btsocket.h"
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#include "ng_btsocket_hci_raw.h"
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#include "ng_btsocket_l2cap.h"
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#include "ng_btsocket_rfcomm.h"
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static int ng_btsocket_modevent (module_t, int, void *);
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extern struct domain ng_btsocket_domain;
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/*
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* Bluetooth raw HCI sockets
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*/
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static struct pr_usrreqs ng_btsocket_hci_raw_usrreqs = {
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ng_btsocket_hci_raw_abort, /* abort */
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pru_accept_notsupp, /* accept */
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ng_btsocket_hci_raw_attach, /* attach */
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ng_btsocket_hci_raw_bind, /* bind */
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ng_btsocket_hci_raw_connect, /* connect */
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pru_connect2_notsupp, /* connect2 */
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ng_btsocket_hci_raw_control, /* control */
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ng_btsocket_hci_raw_detach, /* detach */
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ng_btsocket_hci_raw_disconnect, /* disconnect */
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pru_listen_notsupp, /* listen */
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ng_btsocket_hci_raw_peeraddr, /* peeraddr */
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pru_rcvd_notsupp, /* rcvd */
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pru_rcvoob_notsupp, /* rcvoob */
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ng_btsocket_hci_raw_send, /* send */
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pru_sense_null, /* send */
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NULL, /* shutdown */
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ng_btsocket_hci_raw_sockaddr, /* sockaddr */
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sosend,
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soreceive,
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sopoll,
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pru_sosetlabel_null
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};
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/*
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* Bluetooth raw L2CAP sockets
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*/
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static struct pr_usrreqs ng_btsocket_l2cap_raw_usrreqs = {
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ng_btsocket_l2cap_raw_abort, /* abort */
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pru_accept_notsupp, /* accept */
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ng_btsocket_l2cap_raw_attach, /* attach */
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ng_btsocket_l2cap_raw_bind, /* bind */
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ng_btsocket_l2cap_raw_connect, /* connect */
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pru_connect2_notsupp, /* connect2 */
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ng_btsocket_l2cap_raw_control, /* control */
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ng_btsocket_l2cap_raw_detach, /* detach */
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ng_btsocket_l2cap_raw_disconnect, /* disconnect */
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pru_listen_notsupp, /* listen */
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ng_btsocket_l2cap_raw_peeraddr, /* peeraddr */
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pru_rcvd_notsupp, /* rcvd */
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pru_rcvoob_notsupp, /* rcvoob */
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ng_btsocket_l2cap_raw_send, /* send */
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pru_sense_null, /* send */
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NULL, /* shutdown */
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ng_btsocket_l2cap_raw_sockaddr, /* sockaddr */
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sosend,
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soreceive,
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sopoll,
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pru_sosetlabel_null
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};
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/*
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* Bluetooth SEQPACKET L2CAP sockets
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*/
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static struct pr_usrreqs ng_btsocket_l2cap_usrreqs = {
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ng_btsocket_l2cap_abort, /* abort */
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ng_btsocket_l2cap_accept, /* accept */
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ng_btsocket_l2cap_attach, /* attach */
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ng_btsocket_l2cap_bind, /* bind */
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ng_btsocket_l2cap_connect, /* connect */
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pru_connect2_notsupp, /* connect2 */
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ng_btsocket_l2cap_control, /* control */
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ng_btsocket_l2cap_detach, /* detach */
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ng_btsocket_l2cap_disconnect, /* disconnect */
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ng_btsocket_l2cap_listen, /* listen */
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ng_btsocket_l2cap_peeraddr, /* peeraddr */
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pru_rcvd_notsupp, /* rcvd */
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pru_rcvoob_notsupp, /* rcvoob */
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ng_btsocket_l2cap_send, /* send */
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pru_sense_null, /* send */
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NULL, /* shutdown */
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ng_btsocket_l2cap_sockaddr, /* sockaddr */
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sosend,
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soreceive,
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sopoll,
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pru_sosetlabel_null
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};
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/*
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* Bluetooth STREAM RFCOMM sockets
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*/
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static struct pr_usrreqs ng_btsocket_rfcomm_usrreqs = {
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ng_btsocket_rfcomm_abort, /* abort */
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ng_btsocket_rfcomm_accept, /* accept */
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ng_btsocket_rfcomm_attach, /* attach */
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ng_btsocket_rfcomm_bind, /* bind */
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ng_btsocket_rfcomm_connect, /* connect */
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pru_connect2_notsupp, /* connect2 */
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ng_btsocket_rfcomm_control, /* control */
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ng_btsocket_rfcomm_detach, /* detach */
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ng_btsocket_rfcomm_disconnect, /* disconnect */
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ng_btsocket_rfcomm_listen, /* listen */
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ng_btsocket_rfcomm_peeraddr, /* peeraddr */
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pru_rcvd_notsupp, /* rcvd */
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pru_rcvoob_notsupp, /* rcvoob */
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ng_btsocket_rfcomm_send, /* send */
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pru_sense_null, /* send */
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NULL, /* shutdown */
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ng_btsocket_rfcomm_sockaddr, /* sockaddr */
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sosend,
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soreceive,
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sopoll,
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pru_sosetlabel_null
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};
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/*
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* Definitions of protocols supported in the BLUETOOTH domain
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*/
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static struct protosw ng_btsocket_protosw[] = {
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{
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SOCK_RAW, /* protocol type */
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&ng_btsocket_domain, /* backpointer to domain */
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BLUETOOTH_PROTO_HCI, /* protocol */
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PR_ATOMIC | PR_ADDR, /* flags */
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NULL, NULL, NULL, /* input, output, ctlinput */
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ng_btsocket_hci_raw_ctloutput, /* ctloutput */
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NULL, /* ousrreq() */
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ng_btsocket_hci_raw_init, /* init */
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NULL, NULL, NULL, /* fasttimeo, slowtimo, drain */
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&ng_btsocket_hci_raw_usrreqs, /* usrreq table (above) */
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/* { NULL } */ /* pfh (protocol filter head?) */
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},
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{
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SOCK_RAW, /* protocol type */
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&ng_btsocket_domain, /* backpointer to domain */
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BLUETOOTH_PROTO_L2CAP, /* protocol */
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PR_ATOMIC | PR_ADDR, /* flags */
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NULL, NULL, NULL, /* input, output, ctlinput */
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NULL, /* ctloutput */
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NULL, /* ousrreq() */
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ng_btsocket_l2cap_raw_init, /* init */
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NULL, NULL, NULL, /* fasttimeo, slowtimo, drain */
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&ng_btsocket_l2cap_raw_usrreqs, /* usrreq table (above) */
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/* { NULL } */ /* pfh (protocol filter head?) */
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},
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{
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SOCK_SEQPACKET, /* protocol type */
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&ng_btsocket_domain, /* backpointer to domain */
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BLUETOOTH_PROTO_L2CAP, /* protocol */
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PR_ATOMIC | PR_CONNREQUIRED, /* flags */
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NULL, NULL, NULL, /* input, output, ctlinput */
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ng_btsocket_l2cap_ctloutput, /* ctloutput */
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NULL, /* ousrreq() */
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ng_btsocket_l2cap_init, /* init */
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NULL, NULL, NULL, /* fasttimeo, slowtimo, drain */
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&ng_btsocket_l2cap_usrreqs, /* usrreq table (above) */
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/* { NULL } */ /* pfh (protocol filter head?) */
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},
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{
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SOCK_STREAM, /* protocol type */
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&ng_btsocket_domain, /* backpointer to domain */
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BLUETOOTH_PROTO_RFCOMM, /* protocol */
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PR_ATOMIC | PR_CONNREQUIRED, /* flags */
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NULL, NULL, NULL, /* input, output, ctlinput */
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ng_btsocket_rfcomm_ctloutput, /* ctloutput */
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NULL, /* ousrreq() */
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ng_btsocket_rfcomm_init, /* init */
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NULL, NULL, NULL, /* fasttimeo, slowtimo, drain */
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&ng_btsocket_rfcomm_usrreqs, /* usrreq table (above) */
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/* { NULL } */ /* pfh (protocol filter head?) */
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}
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};
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#define ng_btsocket_protosw_size \
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(sizeof(ng_btsocket_protosw)/sizeof(ng_btsocket_protosw[0]))
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#define ng_btsocket_protosw_end \
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&ng_btsocket_protosw[ng_btsocket_protosw_size]
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/*
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* BLUETOOTH domain
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*/
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struct domain ng_btsocket_domain = {
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AF_BLUETOOTH, /* family */
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"bluetooth", /* domain name */
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NULL, /* init() */
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NULL, /* externalize() */
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NULL, /* dispose() */
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ng_btsocket_protosw, /* protosw entry */
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ng_btsocket_protosw_end, /* end of protosw entries */
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NULL, /* next domain in list */
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NULL, /* rtattach() */
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0, /* arg to rtattach in bits */
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0 /* maxrtkey */
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};
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/*
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* Socket sysctl tree
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*/
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SYSCTL_NODE(_net_bluetooth_hci, OID_AUTO, sockets, CTLFLAG_RW,
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0, "Bluetooth HCI sockets family");
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SYSCTL_NODE(_net_bluetooth_l2cap, OID_AUTO, sockets, CTLFLAG_RW,
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0, "Bluetooth L2CAP sockets family");
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SYSCTL_NODE(_net_bluetooth_rfcomm, OID_AUTO, sockets, CTLFLAG_RW,
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0, "Bluetooth RFCOMM sockets family");
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/*
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* Module
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*/
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static moduledata_t ng_btsocket_mod = {
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"ng_btsocket",
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ng_btsocket_modevent,
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NULL
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};
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DECLARE_MODULE(ng_btsocket, ng_btsocket_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
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MODULE_VERSION(ng_btsocket, NG_BLUETOOTH_VERSION);
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MODULE_DEPEND(ng_btsocket, ng_bluetooth, NG_BLUETOOTH_VERSION,
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NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION);
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MODULE_DEPEND(ng_btsocket, netgraph, NG_ABI_VERSION,
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NG_ABI_VERSION, NG_ABI_VERSION);
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/*
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* Handle loading and unloading for this node type.
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* This is to handle auxiliary linkages (e.g protocol domain addition).
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*/
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static int
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ng_btsocket_modevent(module_t mod, int event, void *data)
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{
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int error = 0;
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switch (event) {
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case MOD_LOAD:
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net_add_domain(&ng_btsocket_domain);
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break;
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case MOD_UNLOAD:
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/* XXX can't unload protocol domain yet */
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error = EBUSY;
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break;
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default:
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error = EOPNOTSUPP;
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break;
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}
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return (error);
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} /* ng_btsocket_modevent */
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