[apple/xnu.git] / bsd / net / raw_usrreq.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1980, 1986, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)raw_usrreq.c	8.1 (Berkeley) 6/10/93
 * $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <kern/locks.h>

#include <net/raw_cb.h>

lck_mtx_t 	*raw_mtx;	/*### global raw cb mutex for now */
lck_attr_t 	*raw_mtx_attr;
lck_grp_t 	*raw_mtx_grp;
lck_grp_attr_t 	*raw_mtx_grp_attr;
/*
 * Initialize raw connection block q.
 */
void
raw_init()
{
	raw_mtx_grp_attr = lck_grp_attr_alloc_init();

	lck_grp_attr_setdefault(raw_mtx_grp_attr);

	raw_mtx_grp = lck_grp_alloc_init("rawcb", raw_mtx_grp_attr);

	raw_mtx_attr = lck_attr_alloc_init();

	lck_attr_setdefault(raw_mtx_attr);

	if ((raw_mtx = lck_mtx_alloc_init(raw_mtx_grp, raw_mtx_attr)) == NULL) {
		printf("raw_init: can't alloc raw_mtx\n");
		return;
	}
	LIST_INIT(&rawcb_list);
}


/*
 * Raw protocol input routine.  Find the socket
 * associated with the packet(s) and move them over.  If
 * nothing exists for this packet, drop it.
 */
/*
 * Raw protocol interface.
 */
void
raw_input(m0, proto, src, dst)
	struct mbuf *m0;
	register struct sockproto *proto;
	struct sockaddr *src, *dst;
{
	register struct rawcb *rp;
	register struct mbuf *m = m0;
	register int sockets = 0;
	struct socket *last;
	int error;

//####LD raw_input is called from many places, input & output path. We have to assume the 
//####LD socket we'll find and need to append to is unlocked.
//####LD calls from the output (locked) path need to make sure the socket is not locked when
//####LD we call in raw_input
	last = 0;
	lck_mtx_lock(raw_mtx);
	LIST_FOREACH(rp, &rawcb_list, list) {
		if (rp->rcb_proto.sp_family != proto->sp_family)
			continue;
		if (rp->rcb_proto.sp_protocol  &&
		    rp->rcb_proto.sp_protocol != proto->sp_protocol)
			continue;
		/*
		 * We assume the lower level routines have
		 * placed the address in a canonical format
		 * suitable for a structure comparison.
		 *
		 * Note that if the lengths are not the same
		 * the comparison will fail at the first byte.
		 */
#define	equal(a1, a2) \
  (bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
		if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
			continue;
		if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
			continue;
		if (last) {
			struct mbuf *n;
			n = m_copy(m, 0, (int)M_COPYALL);
			if (n) {
				socket_lock(last, 1);
				if (sbappendaddr(&last->so_rcv, src,
				    n, (struct mbuf *)0, &error) != 0) {
					sorwakeup(last);
					sockets++;
				}
				socket_unlock(last, 1);
			}
		}
		last = rp->rcb_socket;
	}
	if (last) {
		socket_lock(last, 1);
		if (sbappendaddr(&last->so_rcv, src,
		    m, (struct mbuf *)0, &error) != 0) {
			sorwakeup(last);
			sockets++;
		}
		socket_unlock(last, 1);
	} else
		m_freem(m);
	lck_mtx_unlock(raw_mtx);
}

/*ARGSUSED*/
void
raw_ctlinput(cmd, arg, dummy)
	int cmd;
	struct sockaddr *arg;
	void *dummy;
{

	if (cmd < 0 || cmd > PRC_NCMDS)
		return;
	/* INCOMPLETE */
}

static int
raw_uabort(struct socket *so)
{
	struct rawcb *rp = sotorawcb(so);

	lck_mtx_t * mutex_held;
	if (so->so_proto->pr_getlock != NULL)
		mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	else
		mutex_held = so->so_proto->pr_domain->dom_mtx;
	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);

	if (rp == 0)
		return EINVAL;
	raw_disconnect(rp);
	sofree(so);
	soisdisconnected(so);
	return 0;
}

/* pru_accept is EOPNOTSUPP */

static int
raw_uattach(struct socket *so, int proto, struct proc *p)
{
	struct rawcb *rp = sotorawcb(so);
#ifndef __APPLE__
	int error;
#endif

	if (rp == 0)
		return EINVAL;
#ifdef __APPLE__
		if ((so->so_state & SS_PRIV) == 0)
			return (EPERM);
#else
	if (p && (error = suser(p)) != 0)
		return error;
#endif
	return raw_attach(so, proto);
}

static int
raw_ubind(struct socket *so, struct sockaddr *nam, struct proc *p)
{
	return EINVAL;
}

static int
raw_uconnect(struct socket *so, struct sockaddr *nam, struct proc *p)
{
	return EINVAL;
}

/* pru_connect2 is EOPNOTSUPP */
/* pru_control is EOPNOTSUPP */

static int
raw_udetach(struct socket *so)
{
	struct rawcb *rp = sotorawcb(so);

	lck_mtx_t * mutex_held;
	if (so->so_proto->pr_getlock != NULL)
		mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	else
		mutex_held = so->so_proto->pr_domain->dom_mtx;
	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
	if (rp == 0)
		return EINVAL;

	raw_detach(rp);
	return 0;
}

static int
raw_udisconnect(struct socket *so)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
	if (rp->rcb_faddr == 0) {
		return ENOTCONN;
	}
	raw_disconnect(rp);
	soisdisconnected(so);
	return 0;
}

/* pru_listen is EOPNOTSUPP */

static int
raw_upeeraddr(struct socket *so, struct sockaddr **nam)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
	if (rp->rcb_faddr == 0) {
		return ENOTCONN;
	}
	*nam = dup_sockaddr(rp->rcb_faddr, 1);
	return 0;
}

/* pru_rcvd is EOPNOTSUPP */
/* pru_rcvoob is EOPNOTSUPP */

static int
raw_usend(struct socket *so, int flags, struct mbuf *m,
	  struct sockaddr *nam, struct mbuf *control, struct proc *p)
{
	int error;
	struct rawcb *rp = sotorawcb(so);

	lck_mtx_t * mutex_held;
	if (so->so_proto->pr_getlock != NULL)
		mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	else
		mutex_held = so->so_proto->pr_domain->dom_mtx;
	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);

	if (rp == 0) {
		error = EINVAL;
		goto release;
	}

	if (flags & PRUS_OOB) {
		error = EOPNOTSUPP;
		goto release;
	}

	if (control && control->m_len) {
		error = EOPNOTSUPP;
		goto release;
	}
	if (nam) {
		if (rp->rcb_faddr) {
			error = EISCONN;
			goto release;
		}
		rp->rcb_faddr = nam;
	} else if (rp->rcb_faddr == 0) {
		error = ENOTCONN;
		goto release;
	}
	error = (*so->so_proto->pr_output)(m, so);
	m = NULL;
	if (nam)
		rp->rcb_faddr = 0;
release:
	if (m != NULL)
		m_freem(m);
	return (error);
}

/* pru_sense is null */

static int
raw_ushutdown(struct socket *so)
{
	struct rawcb *rp = sotorawcb(so);
	lck_mtx_t * mutex_held;
	if (so->so_proto->pr_getlock != NULL)
		mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	else
		mutex_held = so->so_proto->pr_domain->dom_mtx;
	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);

	if (rp == 0)
		return EINVAL;
	socantsendmore(so);
	return 0;
}

static int
raw_usockaddr(struct socket *so, struct sockaddr **nam)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
	if (rp->rcb_laddr == 0)
		return EINVAL;
	*nam = dup_sockaddr(rp->rcb_laddr, 1);
	return 0;
}

struct pr_usrreqs raw_usrreqs = {
	raw_uabort, pru_accept_notsupp, raw_uattach, raw_ubind, raw_uconnect,
	pru_connect2_notsupp, pru_control_notsupp, raw_udetach, 
	raw_udisconnect, pru_listen_notsupp, raw_upeeraddr, pru_rcvd_notsupp,
	pru_rcvoob_notsupp, raw_usend, pru_sense_null, raw_ushutdown,
	raw_usockaddr, sosend, soreceive, pru_sopoll_notsupp
};
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
37839358 A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
1c79356b	11	*
37839358 A	12	* This Original Code and all software distributed under the License are
37839358 A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
37839358 A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
1c79356b A	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* Copyright (c) 1980, 1986, 1993
	24	* The Regents of the University of California. All rights reserved.
	25	*
	26	* Redistribution and use in source and binary forms, with or without
	27	* modification, are permitted provided that the following conditions
	28	* are met:
	29	* 1. Redistributions of source code must retain the above copyright
	30	* notice, this list of conditions and the following disclaimer.
	31	* 2. Redistributions in binary form must reproduce the above copyright
	32	* notice, this list of conditions and the following disclaimer in the
	33	* documentation and/or other materials provided with the distribution.
	34	* 3. All advertising materials mentioning features or use of this software
	35	* must display the following acknowledgement:
	36	* This product includes software developed by the University of
	37	* California, Berkeley and its contributors.
	38	* 4. Neither the name of the University nor the names of its contributors
	39	* may be used to endorse or promote products derived from this software
	40	* without specific prior written permission.
	41	*
	42	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	43	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	44	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	45	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	46	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	47	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	48	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	49	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	50	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	51	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	52	* SUCH DAMAGE.
	53	*
	54	* @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
9bccf70c	55	* $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
1c79356b A	56	*/
	57
	58	#include <sys/param.h>
	59	#include <sys/systm.h>
	60	#include <sys/mbuf.h>
	61	#include <sys/proc.h>
91447636	62	#include <sys/domain.h>
1c79356b A	63	#include <sys/protosw.h>
	64	#include <sys/socket.h>
	65	#include <sys/socketvar.h>
91447636	66	#include <kern/locks.h>
1c79356b A	67
	68	#include <net/raw_cb.h>
	69
91447636 A	70	lck_mtx_t raw_mtx; /### global raw cb mutex for now */
	71	lck_attr_t *raw_mtx_attr;
	72	lck_grp_t *raw_mtx_grp;
	73	lck_grp_attr_t *raw_mtx_grp_attr;
1c79356b A	74	/*
	75	* Initialize raw connection block q.
	76	*/
	77	void
	78	raw_init()
	79	{
91447636 A	80	raw_mtx_grp_attr = lck_grp_attr_alloc_init();
	81
	82	lck_grp_attr_setdefault(raw_mtx_grp_attr);
	83
	84	raw_mtx_grp = lck_grp_alloc_init("rawcb", raw_mtx_grp_attr);
	85
	86	raw_mtx_attr = lck_attr_alloc_init();
	87
	88	lck_attr_setdefault(raw_mtx_attr);
	89
	90	if ((raw_mtx = lck_mtx_alloc_init(raw_mtx_grp, raw_mtx_attr)) == NULL) {
	91	printf("raw_init: can't alloc raw_mtx\n");
	92	return;
	93	}
1c79356b A	94	LIST_INIT(&rawcb_list);
	95	}
	96
	97
	98	/*
	99	* Raw protocol input routine. Find the socket
	100	* associated with the packet(s) and move them over. If
	101	* nothing exists for this packet, drop it.
	102	*/
	103	/*
	104	* Raw protocol interface.
	105	*/
	106	void
	107	raw_input(m0, proto, src, dst)
	108	struct mbuf *m0;
	109	register struct sockproto *proto;
	110	struct sockaddr src, dst;
	111	{
	112	register struct rawcb *rp;
	113	register struct mbuf *m = m0;
	114	register int sockets = 0;
	115	struct socket *last;
91447636	116	int error;
1c79356b	117
91447636 A	118	//####LD raw_input is called from many places, input & output path. We have to assume the
	119	//####LD socket we'll find and need to append to is unlocked.
	120	//####LD calls from the output (locked) path need to make sure the socket is not locked when
	121	//####LD we call in raw_input
1c79356b	122	last = 0;
91447636	123	lck_mtx_lock(raw_mtx);
1c79356b A	124	LIST_FOREACH(rp, &rawcb_list, list) {
	125	if (rp->rcb_proto.sp_family != proto->sp_family)
	126	continue;
	127	if (rp->rcb_proto.sp_protocol &&
	128	rp->rcb_proto.sp_protocol != proto->sp_protocol)
	129	continue;
	130	/*
	131	* We assume the lower level routines have
	132	* placed the address in a canonical format
	133	* suitable for a structure comparison.
	134	*
	135	* Note that if the lengths are not the same
	136	* the comparison will fail at the first byte.
	137	*/
	138	#define equal(a1, a2) \
	139	(bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
	140	if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
	141	continue;
	142	if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
	143	continue;
	144	if (last) {
	145	struct mbuf *n;
	146	n = m_copy(m, 0, (int)M_COPYALL);
	147	if (n) {
91447636	148	socket_lock(last, 1);
1c79356b	149	if (sbappendaddr(&last->so_rcv, src,
91447636	150	n, (struct mbuf *)0, &error) != 0) {
1c79356b A	151	sorwakeup(last);
	152	sockets++;
	153	}
91447636	154	socket_unlock(last, 1);
1c79356b A	155	}
	156	}
	157	last = rp->rcb_socket;
	158	}
	159	if (last) {
91447636	160	socket_lock(last, 1);
1c79356b	161	if (sbappendaddr(&last->so_rcv, src,
91447636	162	m, (struct mbuf *)0, &error) != 0) {
1c79356b A	163	sorwakeup(last);
	164	sockets++;
	165	}
91447636	166	socket_unlock(last, 1);
1c79356b A	167	} else
1c79356b A	168	m_freem(m);
91447636	169	lck_mtx_unlock(raw_mtx);
1c79356b A	170	}
	171
	172	/ARGSUSED/
	173	void
	174	raw_ctlinput(cmd, arg, dummy)
	175	int cmd;
	176	struct sockaddr *arg;
	177	void *dummy;
	178	{
	179
	180	if (cmd < 0 \|\| cmd > PRC_NCMDS)
	181	return;
	182	/* INCOMPLETE */
	183	}
	184
	185	static int
	186	raw_uabort(struct socket *so)
	187	{
	188	struct rawcb *rp = sotorawcb(so);
	189
91447636 A	190	lck_mtx_t * mutex_held;
	191	if (so->so_proto->pr_getlock != NULL)
	192	mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	193	else
	194	mutex_held = so->so_proto->pr_domain->dom_mtx;
	195	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
	196
1c79356b A	197	if (rp == 0)
	198	return EINVAL;
	199	raw_disconnect(rp);
	200	sofree(so);
	201	soisdisconnected(so);
	202	return 0;
	203	}
	204
	205	/* pru_accept is EOPNOTSUPP */
	206
	207	static int
	208	raw_uattach(struct socket so, int proto, struct proc p)
	209	{
	210	struct rawcb *rp = sotorawcb(so);
91447636	211	#ifndef __APPLE__
1c79356b	212	int error;
91447636	213	#endif
1c79356b A	214
	215	if (rp == 0)
	216	return EINVAL;
9bccf70c	217	#ifdef __APPLE__
1c79356b A	218	if ((so->so_state & SS_PRIV) == 0)
1c79356b A	219	return (EPERM);
9bccf70c A	220	#else
	221	if (p && (error = suser(p)) != 0)
	222	return error;
1c79356b	223	#endif
1c79356b A	224	return raw_attach(so, proto);
	225	}
	226
	227	static int
	228	raw_ubind(struct socket so, struct sockaddr nam, struct proc *p)
	229	{
	230	return EINVAL;
	231	}
	232
	233	static int
	234	raw_uconnect(struct socket so, struct sockaddr nam, struct proc *p)
	235	{
	236	return EINVAL;
	237	}
	238
	239	/* pru_connect2 is EOPNOTSUPP */
	240	/* pru_control is EOPNOTSUPP */
	241
	242	static int
	243	raw_udetach(struct socket *so)
	244	{
	245	struct rawcb *rp = sotorawcb(so);
	246
91447636 A	247	lck_mtx_t * mutex_held;
	248	if (so->so_proto->pr_getlock != NULL)
	249	mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	250	else
	251	mutex_held = so->so_proto->pr_domain->dom_mtx;
	252	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
1c79356b A	253	if (rp == 0)
	254	return EINVAL;
	255
	256	raw_detach(rp);
	257	return 0;
	258	}
	259
	260	static int
	261	raw_udisconnect(struct socket *so)
	262	{
	263	struct rawcb *rp = sotorawcb(so);
	264
	265	if (rp == 0)
	266	return EINVAL;
	267	if (rp->rcb_faddr == 0) {
	268	return ENOTCONN;
	269	}
	270	raw_disconnect(rp);
	271	soisdisconnected(so);
	272	return 0;
	273	}
	274
	275	/* pru_listen is EOPNOTSUPP */
	276
	277	static int
	278	raw_upeeraddr(struct socket so, struct sockaddr *nam)
	279	{
	280	struct rawcb *rp = sotorawcb(so);
	281
	282	if (rp == 0)
	283	return EINVAL;
	284	if (rp->rcb_faddr == 0) {
	285	return ENOTCONN;
	286	}
	287	*nam = dup_sockaddr(rp->rcb_faddr, 1);
	288	return 0;
	289	}
	290
	291	/* pru_rcvd is EOPNOTSUPP */
	292	/* pru_rcvoob is EOPNOTSUPP */
	293
	294	static int
	295	raw_usend(struct socket so, int flags, struct mbuf m,
	296	struct sockaddr nam, struct mbuf control, struct proc *p)
	297	{
	298	int error;
	299	struct rawcb *rp = sotorawcb(so);
	300
91447636 A	301	lck_mtx_t * mutex_held;
	302	if (so->so_proto->pr_getlock != NULL)
	303	mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	304	else
	305	mutex_held = so->so_proto->pr_domain->dom_mtx;
	306	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
	307
1c79356b A	308	if (rp == 0) {
	309	error = EINVAL;
	310	goto release;
	311	}
	312
	313	if (flags & PRUS_OOB) {
	314	error = EOPNOTSUPP;
	315	goto release;
	316	}
	317
	318	if (control && control->m_len) {
	319	error = EOPNOTSUPP;
	320	goto release;
	321	}
	322	if (nam) {
	323	if (rp->rcb_faddr) {
	324	error = EISCONN;
	325	goto release;
	326	}
	327	rp->rcb_faddr = nam;
	328	} else if (rp->rcb_faddr == 0) {
	329	error = ENOTCONN;
	330	goto release;
	331	}
	332	error = (*so->so_proto->pr_output)(m, so);
	333	m = NULL;
	334	if (nam)
	335	rp->rcb_faddr = 0;
	336	release:
	337	if (m != NULL)
	338	m_freem(m);
	339	return (error);
	340	}
	341
	342	/* pru_sense is null */
	343
	344	static int
	345	raw_ushutdown(struct socket *so)
	346	{
	347	struct rawcb *rp = sotorawcb(so);
91447636 A	348	lck_mtx_t * mutex_held;
	349	if (so->so_proto->pr_getlock != NULL)
	350	mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	351	else
	352	mutex_held = so->so_proto->pr_domain->dom_mtx;
	353	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
1c79356b A	354
	355	if (rp == 0)
	356	return EINVAL;
	357	socantsendmore(so);
	358	return 0;
	359	}
	360
	361	static int
	362	raw_usockaddr(struct socket so, struct sockaddr *nam)
	363	{
	364	struct rawcb *rp = sotorawcb(so);
	365
	366	if (rp == 0)
	367	return EINVAL;
	368	if (rp->rcb_laddr == 0)
	369	return EINVAL;
	370	*nam = dup_sockaddr(rp->rcb_laddr, 1);
	371	return 0;
	372	}
	373
	374	struct pr_usrreqs raw_usrreqs = {
	375	raw_uabort, pru_accept_notsupp, raw_uattach, raw_ubind, raw_uconnect,
	376	pru_connect2_notsupp, pru_control_notsupp, raw_udetach,
	377	raw_udisconnect, pru_listen_notsupp, raw_upeeraddr, pru_rcvd_notsupp,
	378	pru_rcvoob_notsupp, raw_usend, pru_sense_null, raw_ushutdown,
91447636	379	raw_usockaddr, sosend, soreceive, pru_sopoll_notsupp
1c79356b	380	};