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

/*
 * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_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>

decl_lck_mtx_data(,raw_mtx_data);	/*### global raw cb mutex for now */
lck_mtx_t 	*raw_mtx = &raw_mtx_data;
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(struct protosw *pp, struct domain *dp)
{
#pragma unused(pp, dp)
	static int raw_initialized = 0;

	/* This is called by key_init as well, so do it only once */
	if (!raw_initialized) {
		raw_initialized = 1;

		raw_mtx_grp_attr = lck_grp_attr_alloc_init();
		raw_mtx_grp = lck_grp_alloc_init("rawcb", raw_mtx_grp_attr);
		raw_mtx_attr = lck_attr_alloc_init();

		lck_mtx_init(raw_mtx, raw_mtx_grp, raw_mtx_attr);
		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(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src,
	  struct sockaddr *dst)
{
	struct rawcb *rp;
	struct mbuf *m = m0;
	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 = NULL;
	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(int cmd, __unused struct sockaddr *arg, __unused 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, __unused struct proc *p)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
		if ((so->so_state & SS_PRIV) == 0)
			return (EPERM);
	return raw_attach(so, proto);
}

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

static int
raw_uconnect(__unused struct socket *so, __unused struct sockaddr *nam, __unused 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, __unused 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 (so->so_proto->pr_output == NULL) {
		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 = NULL;
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 = {
	.pru_abort =		raw_uabort,
	.pru_attach =		raw_uattach,
	.pru_bind =		raw_ubind,
	.pru_connect =		raw_uconnect,
	.pru_detach =		raw_udetach,
	.pru_disconnect =	raw_udisconnect,
	.pru_peeraddr =		raw_upeeraddr,
	.pru_send =		raw_usend,
	.pru_shutdown =		raw_ushutdown,
	.pru_sockaddr =		raw_usockaddr,
	.pru_sosend =		sosend,
	.pru_soreceive =	soreceive,
};
Commit	Line	Data
1c79356b	1	/*
39236c6e	2	* Copyright (c) 2000-2012 Apple Inc. All rights reserved.
5d5c5d0d	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* Copyright (c) 1980, 1986, 1993
	30	* The Regents of the University of California. All rights reserved.
	31	*
	32	* Redistribution and use in source and binary forms, with or without
	33	* modification, are permitted provided that the following conditions
	34	* are met:
	35	* 1. Redistributions of source code must retain the above copyright
	36	* notice, this list of conditions and the following disclaimer.
	37	* 2. Redistributions in binary form must reproduce the above copyright
	38	* notice, this list of conditions and the following disclaimer in the
	39	* documentation and/or other materials provided with the distribution.
	40	* 3. All advertising materials mentioning features or use of this software
	41	* must display the following acknowledgement:
	42	* This product includes software developed by the University of
	43	* California, Berkeley and its contributors.
	44	* 4. Neither the name of the University nor the names of its contributors
	45	* may be used to endorse or promote products derived from this software
	46	* without specific prior written permission.
	47	*
	48	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	49	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	50	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	51	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	52	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	53	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	54	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	55	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	56	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	57	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	58	* SUCH DAMAGE.
	59	*
	60	* @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
9bccf70c	61	* $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
1c79356b A	62	*/
	63
	64	#include <sys/param.h>
	65	#include <sys/systm.h>
	66	#include <sys/mbuf.h>
	67	#include <sys/proc.h>
91447636	68	#include <sys/domain.h>
1c79356b A	69	#include <sys/protosw.h>
	70	#include <sys/socket.h>
	71	#include <sys/socketvar.h>
91447636	72	#include <kern/locks.h>
1c79356b A	73
	74	#include <net/raw_cb.h>
	75
316670eb A	76	decl_lck_mtx_data(,raw_mtx_data); /### global raw cb mutex for now /
316670eb A	77	lck_mtx_t *raw_mtx = &raw_mtx_data;
91447636 A	78	lck_attr_t *raw_mtx_attr;
	79	lck_grp_t *raw_mtx_grp;
	80	lck_grp_attr_t *raw_mtx_grp_attr;
1c79356b A	81	/*
	82	* Initialize raw connection block q.
	83	*/
	84	void
39236c6e	85	raw_init(struct protosw pp, struct domain dp)
1c79356b	86	{
39236c6e A	87	#pragma unused(pp, dp)
39236c6e A	88	static int raw_initialized = 0;
91447636	89
39236c6e A	90	/* This is called by key_init as well, so do it only once */
	91	if (!raw_initialized) {
	92	raw_initialized = 1;
91447636	93
39236c6e A	94	raw_mtx_grp_attr = lck_grp_attr_alloc_init();
	95	raw_mtx_grp = lck_grp_alloc_init("rawcb", raw_mtx_grp_attr);
	96	raw_mtx_attr = lck_attr_alloc_init();
91447636	97
39236c6e A	98	lck_mtx_init(raw_mtx, raw_mtx_grp, raw_mtx_attr);
	99	LIST_INIT(&rawcb_list);
	100	}
1c79356b A	101	}
	102
	103
	104	/*
	105	* Raw protocol input routine. Find the socket
	106	* associated with the packet(s) and move them over. If
	107	* nothing exists for this packet, drop it.
	108	*/
	109	/*
	110	* Raw protocol interface.
	111	*/
	112	void
2d21ac55 A	113	raw_input(struct mbuf m0, struct sockproto proto, struct sockaddr *src,
2d21ac55 A	114	struct sockaddr *dst)
1c79356b	115	{
2d21ac55 A	116	struct rawcb *rp;
	117	struct mbuf *m = m0;
	118	int sockets = 0;
1c79356b	119	struct socket *last;
91447636	120	int error;
1c79356b	121
91447636 A	122	//####LD raw_input is called from many places, input & output path. We have to assume the
	123	//####LD socket we'll find and need to append to is unlocked.
	124	//####LD calls from the output (locked) path need to make sure the socket is not locked when
	125	//####LD we call in raw_input
2d21ac55	126	last = NULL;
91447636	127	lck_mtx_lock(raw_mtx);
1c79356b A	128	LIST_FOREACH(rp, &rawcb_list, list) {
	129	if (rp->rcb_proto.sp_family != proto->sp_family)
	130	continue;
	131	if (rp->rcb_proto.sp_protocol &&
	132	rp->rcb_proto.sp_protocol != proto->sp_protocol)
	133	continue;
	134	/*
	135	* We assume the lower level routines have
	136	* placed the address in a canonical format
	137	* suitable for a structure comparison.
	138	*
	139	* Note that if the lengths are not the same
	140	* the comparison will fail at the first byte.
	141	*/
	142	#define equal(a1, a2) \
	143	(bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
	144	if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
	145	continue;
	146	if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
	147	continue;
	148	if (last) {
	149	struct mbuf *n;
	150	n = m_copy(m, 0, (int)M_COPYALL);
	151	if (n) {
91447636	152	socket_lock(last, 1);
1c79356b	153	if (sbappendaddr(&last->so_rcv, src,
91447636	154	n, (struct mbuf *)0, &error) != 0) {
1c79356b A	155	sorwakeup(last);
	156	sockets++;
	157	}
91447636	158	socket_unlock(last, 1);
1c79356b A	159	}
	160	}
	161	last = rp->rcb_socket;
	162	}
	163	if (last) {
91447636	164	socket_lock(last, 1);
1c79356b	165	if (sbappendaddr(&last->so_rcv, src,
91447636	166	m, (struct mbuf *)0, &error) != 0) {
1c79356b A	167	sorwakeup(last);
	168	sockets++;
	169	}
91447636	170	socket_unlock(last, 1);
1c79356b A	171	} else
1c79356b A	172	m_freem(m);
91447636	173	lck_mtx_unlock(raw_mtx);
1c79356b A	174	}
	175
	176	/ARGSUSED/
	177	void
2d21ac55	178	raw_ctlinput(int cmd, __unused struct sockaddr arg, __unused void dummy)
1c79356b A	179	{
1c79356b A	180
3e170ce0	181	if (cmd < 0 \|\| cmd >= PRC_NCMDS)
1c79356b A	182	return;
	183	/* INCOMPLETE */
	184	}
	185
	186	static int
	187	raw_uabort(struct socket *so)
	188	{
	189	struct rawcb *rp = sotorawcb(so);
	190
91447636 A	191	lck_mtx_t * mutex_held;
	192	if (so->so_proto->pr_getlock != NULL)
	193	mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	194	else
	195	mutex_held = so->so_proto->pr_domain->dom_mtx;
	196	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
	197
1c79356b A	198	if (rp == 0)
	199	return EINVAL;
	200	raw_disconnect(rp);
	201	sofree(so);
	202	soisdisconnected(so);
	203	return 0;
	204	}
	205
	206	/* pru_accept is EOPNOTSUPP */
	207
	208	static int
2d21ac55	209	raw_uattach(struct socket so, int proto, __unused struct proc p)
1c79356b A	210	{
1c79356b A	211	struct rawcb *rp = sotorawcb(so);
1c79356b A	212
	213	if (rp == 0)
	214	return EINVAL;
1c79356b A	215	if ((so->so_state & SS_PRIV) == 0)
1c79356b A	216	return (EPERM);
1c79356b A	217	return raw_attach(so, proto);
	218	}
	219
	220	static int
2d21ac55	221	raw_ubind(__unused struct socket so, __unused struct sockaddr nam, __unused struct proc *p)
1c79356b A	222	{
	223	return EINVAL;
	224	}
	225
	226	static int
2d21ac55	227	raw_uconnect(__unused struct socket so, __unused struct sockaddr nam, __unused struct proc *p)
1c79356b A	228	{
	229	return EINVAL;
	230	}
	231
	232	/* pru_connect2 is EOPNOTSUPP */
	233	/* pru_control is EOPNOTSUPP */
	234
	235	static int
	236	raw_udetach(struct socket *so)
	237	{
	238	struct rawcb *rp = sotorawcb(so);
	239
91447636 A	240	lck_mtx_t * mutex_held;
	241	if (so->so_proto->pr_getlock != NULL)
	242	mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	243	else
	244	mutex_held = so->so_proto->pr_domain->dom_mtx;
	245	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
1c79356b A	246	if (rp == 0)
	247	return EINVAL;
	248
	249	raw_detach(rp);
	250	return 0;
	251	}
	252
	253	static int
	254	raw_udisconnect(struct socket *so)
	255	{
	256	struct rawcb *rp = sotorawcb(so);
	257
	258	if (rp == 0)
	259	return EINVAL;
	260	if (rp->rcb_faddr == 0) {
	261	return ENOTCONN;
	262	}
	263	raw_disconnect(rp);
	264	soisdisconnected(so);
	265	return 0;
	266	}
	267
	268	/* pru_listen is EOPNOTSUPP */
	269
	270	static int
	271	raw_upeeraddr(struct socket so, struct sockaddr *nam)
	272	{
	273	struct rawcb *rp = sotorawcb(so);
	274
	275	if (rp == 0)
	276	return EINVAL;
	277	if (rp->rcb_faddr == 0) {
	278	return ENOTCONN;
	279	}
	280	*nam = dup_sockaddr(rp->rcb_faddr, 1);
	281	return 0;
	282	}
	283
	284	/* pru_rcvd is EOPNOTSUPP */
	285	/* pru_rcvoob is EOPNOTSUPP */
	286
	287	static int
	288	raw_usend(struct socket so, int flags, struct mbuf m,
2d21ac55	289	struct sockaddr nam, struct mbuf control, __unused struct proc *p)
1c79356b A	290	{
	291	int error;
	292	struct rawcb *rp = sotorawcb(so);
	293
91447636 A	294	lck_mtx_t * mutex_held;
	295	if (so->so_proto->pr_getlock != NULL)
	296	mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	297	else
	298	mutex_held = so->so_proto->pr_domain->dom_mtx;
	299	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
	300
1c79356b A	301	if (rp == 0) {
	302	error = EINVAL;
	303	goto release;
	304	}
	305
	306	if (flags & PRUS_OOB) {
	307	error = EOPNOTSUPP;
	308	goto release;
	309	}
	310
0b4c1975 A	311	if (so->so_proto->pr_output == NULL) {
	312	error = EOPNOTSUPP;
	313	goto release;
	314	}
	315
1c79356b A	316	if (control && control->m_len) {
	317	error = EOPNOTSUPP;
	318	goto release;
	319	}
	320	if (nam) {
	321	if (rp->rcb_faddr) {
	322	error = EISCONN;
	323	goto release;
	324	}
	325	rp->rcb_faddr = nam;
	326	} else if (rp->rcb_faddr == 0) {
	327	error = ENOTCONN;
	328	goto release;
	329	}
	330	error = (*so->so_proto->pr_output)(m, so);
	331	m = NULL;
	332	if (nam)
2d21ac55	333	rp->rcb_faddr = NULL;
1c79356b A	334	release:
	335	if (m != NULL)
	336	m_freem(m);
	337	return (error);
	338	}
	339
	340	/* pru_sense is null */
	341
	342	static int
	343	raw_ushutdown(struct socket *so)
	344	{
	345	struct rawcb *rp = sotorawcb(so);
91447636 A	346	lck_mtx_t * mutex_held;
	347	if (so->so_proto->pr_getlock != NULL)
	348	mutex_held = (*so->so_proto->pr_getlock)(so, 0);
	349	else
	350	mutex_held = so->so_proto->pr_domain->dom_mtx;
	351	lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
1c79356b A	352
	353	if (rp == 0)
	354	return EINVAL;
	355	socantsendmore(so);
	356	return 0;
	357	}
	358
	359	static int
	360	raw_usockaddr(struct socket so, struct sockaddr *nam)
	361	{
	362	struct rawcb *rp = sotorawcb(so);
	363
	364	if (rp == 0)
	365	return EINVAL;
	366	if (rp->rcb_laddr == 0)
	367	return EINVAL;
	368	*nam = dup_sockaddr(rp->rcb_laddr, 1);
	369	return 0;
	370	}
	371
	372	struct pr_usrreqs raw_usrreqs = {
39236c6e A	373	.pru_abort = raw_uabort,
	374	.pru_attach = raw_uattach,
	375	.pru_bind = raw_ubind,
	376	.pru_connect = raw_uconnect,
	377	.pru_detach = raw_udetach,
	378	.pru_disconnect = raw_udisconnect,
	379	.pru_peeraddr = raw_upeeraddr,
	380	.pru_send = raw_usend,
	381	.pru_shutdown = raw_ushutdown,
	382	.pru_sockaddr = raw_usockaddr,
	383	.pru_sosend = sosend,
	384	.pru_soreceive = soreceive,
1c79356b	385	};