[apple/xnu.git] / bsd / kern / sys_socket.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) 1982, 1986, 1990, 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.
 *
 *	@(#)sys_socket.c	8.1 (Berkeley) 6/10/93
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/file.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/filio.h>			/* XXX */
#include <sys/sockio.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <sys/filedesc.h>

#include <net/if.h>
#include <net/route.h>

int soo_read __P((struct file *fp, struct uio *uio, 
		struct ucred *cred));
int soo_write __P((struct file *fp, struct uio *uio, 
		struct ucred *cred));
int soo_close __P((struct file *fp, struct proc *p));

int soo_select __P((struct file *fp, int which, void * wql, struct proc *p));

struct	fileops socketops =
    { soo_read, soo_write, soo_ioctl, soo_select, soo_close };

/* ARGSUSED */
int
soo_read(fp, uio, cred)
	struct file *fp;
	struct uio *uio;
	struct ucred *cred;
{
	struct socket *so = (struct socket *)fp->f_data;
	struct kextcb *kp;
	int stat;
	int (*fsoreceive) __P((struct socket *so, 
			       struct sockaddr **paddr,
			       struct uio *uio, struct mbuf **mp0,
			       struct mbuf **controlp, int *flagsp));


	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);

	fsoreceive = so->so_proto->pr_usrreqs->pru_soreceive;
	if (fsoreceive != soreceive)
	{	kp = sotokextcb(so);
		while (kp)
		{	if (kp->e_soif && kp->e_soif->sf_soreceive)
				(*kp->e_soif->sf_soreceive)(so, 0, &uio,
							    0, 0, 0, kp);
			kp = kp->e_next;
		}

	}
	
	stat = (*fsoreceive)(so, 0, uio, 0, 0, 0);
	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	return stat;
}

/* ARGSUSED */
int
soo_write(fp, uio, cred)
	struct file *fp;
	struct uio *uio;
	struct ucred *cred;
{
	struct socket *so = (struct socket *)fp->f_data;
	int	(*fsosend) __P((struct socket *so, struct sockaddr *addr,
				struct uio *uio, struct mbuf *top,
				struct mbuf *control, int flags));
	struct kextcb *kp;
	int           stat;

	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	fsosend = so->so_proto->pr_usrreqs->pru_sosend;
	if (fsosend != sosend)
	{	kp = sotokextcb(so);
		while (kp)
		{	if (kp->e_soif && kp->e_soif->sf_sosend)
			(*kp->e_soif->sf_sosend)(so, 0, &uio,
						 0, 0, 0, kp);
			kp = kp->e_next;
		}
	}

	stat = (*fsosend)(so, 0, uio, 0, 0, 0);
	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	return stat;
}

int
soo_ioctl(fp, cmd, data, p)
	struct file *fp;
	u_long cmd;
	register caddr_t data;
	struct proc *p;
{
	register struct socket *so = (struct socket *)fp->f_data;

	struct sockopt sopt;
	struct kextcb *kp;
	int    error = 0;
	kp = sotokextcb(so);
	sopt.sopt_level = cmd;
	sopt.sopt_name = (int)data;
	sopt.sopt_p = p;


	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);

	while (kp)
	{	if (kp->e_soif && kp->e_soif->sf_socontrol)
			(*kp->e_soif->sf_socontrol)(so, &sopt, kp);
		kp = kp->e_next;
	}

	switch (cmd) {

	case FIONBIO:
		if (*(int *)data)
			so->so_state |= SS_NBIO;
		else
			so->so_state &= ~SS_NBIO;

		thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
		return (0);

	case FIOASYNC:
		if (*(int *)data) {
			so->so_state |= SS_ASYNC;
			so->so_rcv.sb_flags |= SB_ASYNC;
			so->so_snd.sb_flags |= SB_ASYNC;
		} else {
			so->so_state &= ~SS_ASYNC;
			so->so_rcv.sb_flags &= ~SB_ASYNC;
			so->so_snd.sb_flags &= ~SB_ASYNC;
		}
		thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
		return (0);

	case FIONREAD:
		*(int *)data = so->so_rcv.sb_cc;
		thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
		return (0);

	case SIOCSPGRP:
		so->so_pgid = *(int *)data;
		thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
		return (0);

	case SIOCGPGRP:
		*(int *)data = so->so_pgid;
		thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
		return (0);

	case SIOCATMARK:
	     *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
		thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
		return (0);

	case SIOCSETOT: {
	     /*
	      * Set socket level options here and then call protocol
	      * specific routine.
	      */
	     struct socket	*cloned_so = NULL;
	     int				cloned_fd = *(int *)data;

	     /* let's make sure it's either -1 or a valid file descriptor */
	     if (cloned_fd != -1) {
		  struct file     *cloned_fp;
		  error = getsock(p->p_fd, cloned_fd, &cloned_fp);
		  if (error) {
		       thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
		       return (error);
		  }

		  cloned_so = (struct socket *)cloned_fp->f_data;
	     }

	     /* Always set socket non-blocking for OT */
	     fp->f_flag |= FNONBLOCK;
	     so->so_state |= SS_NBIO;
	     so->so_options |= SO_DONTTRUNC | SO_WANTMORE;

	     if (cloned_so && so != cloned_so) {
		  /* Flags options */
		  so->so_options |= cloned_so->so_options & ~SO_ACCEPTCONN;

            /* SO_LINGER */
            if (so->so_options & SO_LINGER)
                so->so_linger = cloned_so->so_linger;

            /* SO_SNDBUF, SO_RCVBUF */
		  if (cloned_so->so_snd.sb_hiwat > 0) {
		       if (sbreserve(&so->so_snd, cloned_so->so_snd.sb_hiwat) == 0) {
			    error = ENOBUFS;
			    thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
			    return (error);
		       }
		  }
		  if (cloned_so->so_rcv.sb_hiwat > 0) {
		       if (sbreserve(&so->so_rcv, cloned_so->so_rcv.sb_hiwat) == 0) {
			    error = ENOBUFS;
			    thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
			    return (error);
		       }
		  }

		  /* SO_SNDLOWAT, SO_RCVLOWAT */
		  so->so_snd.sb_lowat =
		       (cloned_so->so_snd.sb_lowat > so->so_snd.sb_hiwat) ?
		       so->so_snd.sb_hiwat : cloned_so->so_snd.sb_lowat;
		  so->so_rcv.sb_lowat =
		       (cloned_so->so_rcv.sb_lowat > so->so_rcv.sb_hiwat) ?
		       so->so_rcv.sb_hiwat : cloned_so->so_rcv.sb_lowat;

            /* SO_SNDTIMEO, SO_RCVTIMEO */
		  so->so_snd.sb_timeo = cloned_so->so_snd.sb_timeo;
		  so->so_rcv.sb_timeo = cloned_so->so_rcv.sb_timeo;
	     }

	     error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
	     /* Just ignore protocols that do not understand it */
	     if (error == EOPNOTSUPP)
		  error = 0;

	     thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	     return (error);
        }
	}
	/*
	 * Interface/routing/protocol specific ioctls:
	 * interface and routing ioctls should have a
	 * different entry since a socket's unnecessary
	 */
	if (IOCGROUP(cmd) == 'i')
	     error = ifioctl(so, cmd, data, p);
	else 
	     if (IOCGROUP(cmd) == 'r')
		  error = rtioctl(cmd, data, p);
	     else
		  error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);

	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	return error;
}

int
soo_select(fp, which, wql, p)
	struct file *fp;
	int which;
	void * wql;
	struct proc *p;
{
	register struct socket *so = (struct socket *)fp->f_data;
	register int s = splnet();
	int retnum=0;


	switch (which) {

	case FREAD:
		so->so_rcv.sb_flags |= SB_SEL;
		if (soreadable(so)) {
			splx(s);
			retnum = 1;
			so->so_rcv.sb_flags &= ~SB_SEL;
			goto done;
		}
		selrecord(p, &so->so_rcv.sb_sel, wql);
		break;

	case FWRITE:
		so->so_snd.sb_flags |= SB_SEL;
		if (sowriteable(so)) {
			splx(s);
			retnum = 1;
			so->so_snd.sb_flags &= ~SB_SEL;
			goto done;
		}
		selrecord(p, &so->so_snd.sb_sel, wql);
		break;

	case 0:
		so->so_rcv.sb_flags |= SB_SEL;
		if (so->so_oobmark || (so->so_state & SS_RCVATMARK)) {
			splx(s);
			retnum = 1;
			so->so_rcv.sb_flags &= ~SB_SEL;
			goto done;
		}
		selrecord(p, &so->so_rcv.sb_sel, wql);
		break;
	}
	splx(s);
done:
	return (retnum);
}


int
soo_stat(so, ub)
	register struct socket *so;
	register struct stat *ub;
{
     int stat;

	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	bzero((caddr_t)ub, sizeof (*ub));
	ub->st_mode = S_IFSOCK;
	stat = (*so->so_proto->pr_usrreqs->pru_sense)(so, ub);
	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	return stat;
}

/* ARGSUSED */
int
soo_close(fp, p)
	struct file *fp;
	struct proc *p;
{
	int error = 0;

	if (fp->f_data) {
	     thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	     error = soclose((struct socket *)fp->f_data);
	     thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	}

	fp->f_data = 0;
	return (error);
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	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.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	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.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* Copyright (c) 1982, 1986, 1990, 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	* @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
	55	*/
	56
	57	#include <sys/param.h>
	58	#include <sys/systm.h>
	59	#include <sys/file.h>
	60	#include <sys/protosw.h>
	61	#include <sys/socket.h>
	62	#include <sys/socketvar.h>
	63	#include <sys/filio.h> /* XXX */
	64	#include <sys/sockio.h>
65	#include <sys/stat.h>
66	#include <sys/uio.h>
67	#include <sys/filedesc.h>
68
69	#include <net/if.h>
70	#include <net/route.h>
71
72	int soo_read __P((struct file fp, struct uio uio,
73	struct ucred *cred));
74	int soo_write __P((struct file fp, struct uio uio,
75	struct ucred *cred));
76	int soo_close __P((struct file fp, struct proc p));
77
0b4e3aa0	78	int soo_select __P((struct file fp, int which, void wql, struct proc *p));
1c79356b A	79
	80	struct fileops socketops =
	81	{ soo_read, soo_write, soo_ioctl, soo_select, soo_close };
	82
	83	/* ARGSUSED */
	84	int
	85	soo_read(fp, uio, cred)
	86	struct file *fp;
	87	struct uio *uio;
	88	struct ucred *cred;
	89	{
	90	struct socket so = (struct socket )fp->f_data;
	91	struct kextcb *kp;
	92	int stat;
	93	int (fsoreceive) __P((struct socket so,
	94	struct sockaddr **paddr,
	95	struct uio uio, struct mbuf *mp0,
	96	struct mbuf *controlp, int flagsp));
	97
0b4e3aa0	98
1c79356b	99	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
0b4e3aa0	100
1c79356b A	101	fsoreceive = so->so_proto->pr_usrreqs->pru_soreceive;
	102	if (fsoreceive != soreceive)
	103	{ kp = sotokextcb(so);
	104	while (kp)
	105	{ if (kp->e_soif && kp->e_soif->sf_soreceive)
	106	(*kp->e_soif->sf_soreceive)(so, 0, &uio,
	107	0, 0, 0, kp);
	108	kp = kp->e_next;
	109	}
	110
	111	}
	112
	113	stat = (*fsoreceive)(so, 0, uio, 0, 0, 0);
	114	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	115	return stat;
	116	}
	117
	118	/* ARGSUSED */
	119	int
	120	soo_write(fp, uio, cred)
	121	struct file *fp;
	122	struct uio *uio;
	123	struct ucred *cred;
	124	{
	125	struct socket so = (struct socket )fp->f_data;
	126	int (fsosend) __P((struct socket so, struct sockaddr *addr,
	127	struct uio uio, struct mbuf top,
	128	struct mbuf *control, int flags));
	129	struct kextcb *kp;
	130	int stat;
	131
	132	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	133	fsosend = so->so_proto->pr_usrreqs->pru_sosend;
	134	if (fsosend != sosend)
	135	{ kp = sotokextcb(so);
	136	while (kp)
	137	{ if (kp->e_soif && kp->e_soif->sf_sosend)
	138	(*kp->e_soif->sf_sosend)(so, 0, &uio,
	139	0, 0, 0, kp);
	140	kp = kp->e_next;
	141	}
	142	}
	143
	144	stat = (*fsosend)(so, 0, uio, 0, 0, 0);
	145	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	146	return stat;
	147	}
	148
	149	int
	150	soo_ioctl(fp, cmd, data, p)
	151	struct file *fp;
	152	u_long cmd;
	153	register caddr_t data;
	154	struct proc *p;
	155	{
	156	register struct socket so = (struct socket )fp->f_data;
	157
	158	struct sockopt sopt;
	159	struct kextcb *kp;
	160	int error = 0;
	161	kp = sotokextcb(so);
	162	sopt.sopt_level = cmd;
	163	sopt.sopt_name = (int)data;
	164	sopt.sopt_p = p;
165
166
167	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
168
169	while (kp)
170	{ if (kp->e_soif && kp->e_soif->sf_socontrol)
171	(*kp->e_soif->sf_socontrol)(so, &sopt, kp);
172	kp = kp->e_next;
173	}
174
175	switch (cmd) {
176
177	case FIONBIO:
178	if ((int )data)
179	so->so_state \|= SS_NBIO;
180	else
181	so->so_state &= ~SS_NBIO;
182
183	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
184	return (0);
185
186	case FIOASYNC:
187	if ((int )data) {
188	so->so_state \|= SS_ASYNC;
189	so->so_rcv.sb_flags \|= SB_ASYNC;
190	so->so_snd.sb_flags \|= SB_ASYNC;
191	} else {
192	so->so_state &= ~SS_ASYNC;
193	so->so_rcv.sb_flags &= ~SB_ASYNC;
194	so->so_snd.sb_flags &= ~SB_ASYNC;
195	}
196	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
197	return (0);
198
199	case FIONREAD:
200	(int )data = so->so_rcv.sb_cc;
201	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
202	return (0);
203
204	case SIOCSPGRP:
205	so->so_pgid = (int )data;
206	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
207	return (0);
208
209	case SIOCGPGRP:
210	(int )data = so->so_pgid;
211	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
212	return (0);
213
214	case SIOCATMARK:
215	(int )data = (so->so_state&SS_RCVATMARK) != 0;
216	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
217	return (0);
218
219	case SIOCSETOT: {
220	/*
221	* Set socket level options here and then call protocol
222	* specific routine.
223	*/
224	struct socket *cloned_so = NULL;
225	int cloned_fd = (int )data;
226
227	/* let's make sure it's either -1 or a valid file descriptor */
228	if (cloned_fd != -1) {
229	struct file *cloned_fp;
230	error = getsock(p->p_fd, cloned_fd, &cloned_fp);
231	if (error) {
232	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
233	return (error);
234	}
235
236	cloned_so = (struct socket *)cloned_fp->f_data;
237	}
238
239	/* Always set socket non-blocking for OT */
240	fp->f_flag \|= FNONBLOCK;
241	so->so_state \|= SS_NBIO;
242	so->so_options \|= SO_DONTTRUNC \| SO_WANTMORE;
243
244	if (cloned_so && so != cloned_so) {
245	/* Flags options */
246	so->so_options \|= cloned_so->so_options & ~SO_ACCEPTCONN;
247
248	/* SO_LINGER */
249	if (so->so_options & SO_LINGER)
250	so->so_linger = cloned_so->so_linger;
251
252	/* SO_SNDBUF, SO_RCVBUF */
253	if (cloned_so->so_snd.sb_hiwat > 0) {
254	if (sbreserve(&so->so_snd, cloned_so->so_snd.sb_hiwat) == 0) {
255	error = ENOBUFS;
256	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
257	return (error);
258	}
259	}
260	if (cloned_so->so_rcv.sb_hiwat > 0) {
261	if (sbreserve(&so->so_rcv, cloned_so->so_rcv.sb_hiwat) == 0) {
262	error = ENOBUFS;
263	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
264	return (error);
265	}
266	}
267
268	/* SO_SNDLOWAT, SO_RCVLOWAT */
269	so->so_snd.sb_lowat =
270	(cloned_so->so_snd.sb_lowat > so->so_snd.sb_hiwat) ?
271	so->so_snd.sb_hiwat : cloned_so->so_snd.sb_lowat;
272	so->so_rcv.sb_lowat =
273	(cloned_so->so_rcv.sb_lowat > so->so_rcv.sb_hiwat) ?
274	so->so_rcv.sb_hiwat : cloned_so->so_rcv.sb_lowat;
275
276	/* SO_SNDTIMEO, SO_RCVTIMEO */
277	so->so_snd.sb_timeo = cloned_so->so_snd.sb_timeo;
278	so->so_rcv.sb_timeo = cloned_so->so_rcv.sb_timeo;
279	}
280
281	error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
282	/* Just ignore protocols that do not understand it */
283	if (error == EOPNOTSUPP)
284	error = 0;
285
286	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
287	return (error);
288	}
289	}
290	/*
291	* Interface/routing/protocol specific ioctls:
292	* interface and routing ioctls should have a
293	* different entry since a socket's unnecessary
294	*/
295	if (IOCGROUP(cmd) == 'i')
296	error = ifioctl(so, cmd, data, p);
297	else
298	if (IOCGROUP(cmd) == 'r')
299	error = rtioctl(cmd, data, p);
300	else
301	error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
302
303	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
304	return error;
305	}
306
307	int
0b4e3aa0	308	soo_select(fp, which, wql, p)
1c79356b A	309	struct file *fp;
1c79356b A	310	int which;
0b4e3aa0	311	void * wql;
1c79356b A	312	struct proc *p;
	313	{
	314	register struct socket so = (struct socket )fp->f_data;
	315	register int s = splnet();
	316	int retnum=0;
	317
1c79356b A	318
	319	switch (which) {
	320
	321	case FREAD:
0b4e3aa0	322	so->so_rcv.sb_flags \|= SB_SEL;
1c79356b A	323	if (soreadable(so)) {
	324	splx(s);
	325	retnum = 1;
0b4e3aa0	326	so->so_rcv.sb_flags &= ~SB_SEL;
1c79356b A	327	goto done;
1c79356b A	328	}
0b4e3aa0	329	selrecord(p, &so->so_rcv.sb_sel, wql);
1c79356b A	330	break;
	331
	332	case FWRITE:
0b4e3aa0	333	so->so_snd.sb_flags \|= SB_SEL;
1c79356b A	334	if (sowriteable(so)) {
	335	splx(s);
	336	retnum = 1;
0b4e3aa0	337	so->so_snd.sb_flags &= ~SB_SEL;
1c79356b A	338	goto done;
1c79356b A	339	}
0b4e3aa0	340	selrecord(p, &so->so_snd.sb_sel, wql);
1c79356b A	341	break;
	342
	343	case 0:
0b4e3aa0	344	so->so_rcv.sb_flags \|= SB_SEL;
1c79356b A	345	if (so->so_oobmark \|\| (so->so_state & SS_RCVATMARK)) {
	346	splx(s);
	347	retnum = 1;
0b4e3aa0	348	so->so_rcv.sb_flags &= ~SB_SEL;
1c79356b A	349	goto done;
1c79356b A	350	}
0b4e3aa0	351	selrecord(p, &so->so_rcv.sb_sel, wql);
1c79356b A	352	break;
	353	}
	354	splx(s);
	355	done:
1c79356b A	356	return (retnum);
	357	}
	358
	359
	360	int
	361	soo_stat(so, ub)
	362	register struct socket *so;
	363	register struct stat *ub;
	364	{
	365	int stat;
	366
	367	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	368	bzero((caddr_t)ub, sizeof (*ub));
	369	ub->st_mode = S_IFSOCK;
	370	stat = (*so->so_proto->pr_usrreqs->pru_sense)(so, ub);
	371	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	372	return stat;
	373	}
	374
	375	/* ARGSUSED */
	376	int
	377	soo_close(fp, p)
	378	struct file *fp;
	379	struct proc *p;
	380	{
	381	int error = 0;
	382
	383	if (fp->f_data) {
	384	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	385	error = soclose((struct socket *)fp->f_data);
	386	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	387	}
	388
	389	fp->f_data = 0;
	390	return (error);
	391	}