[apple/xnu.git] / bsd / kern / sys_socket.c

/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * 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. 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_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/event.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 flags, struct proc *p));
int soo_write __P((struct file *fp, struct uio *uio, 
		struct ucred *cred, int flags, struct proc *p));
int soo_close __P((struct file *fp, struct proc *p));

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

int soo_kqfilter __P((struct file *fp, struct knote *kn, struct proc *p));

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

/* ARGSUSED */
int
soo_read(fp, uio, cred, flags, p)
	struct file *fp;
	struct uio *uio;
	struct ucred *cred;
	int flags;
	struct proc *p;
{
	struct socket *so;
	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);

        if ((so = (struct socket *)fp->f_data) == NULL) {
                /* This is not a valid open file descriptor */
                thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
                return (EBADF);
        }

	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, flags, p)
	struct file *fp;
	struct uio *uio;
	struct ucred *cred;
	int flags;
	struct proc *p;
{
	struct socket *so;
	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);

        if ((so = (struct socket *)fp->f_data) == NULL) {
                /* This is not a valid open file descriptor */
                thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
                return (EBADF);
        }

	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);

        /* Generation of SIGPIPE can be controlled per socket */
        if (stat == EPIPE && uio->uio_procp && !(so->so_flags & SOF_NOSIGPIPE))
            psignal(uio->uio_procp, SIGPIPE);

        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 sockopt sopt;
	struct kextcb *kp;
	int    error = 0;

	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);

	if ((so = (struct socket *)fp->f_data) == NULL) {
		/* This is not a valid open file descriptor */
		thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
		return (EBADF);
	}

        kp = sotokextcb(so);
        sopt.sopt_level = cmd;
        sopt.sopt_name = (int)data;
        sopt.sopt_p = p;

	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;
          so->so_flags |= SOF_NOSIGPIPE;

	     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;

	if (so == NULL || so == (struct socket*)-1) goto done;

	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;

	/*
	 * DANGER: by the time we get the network funnel the socket 
	 * may have been closed
	 */
	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;
	struct socket *sp;

	sp = (struct socket *)fp->f_data;
	fp->f_data = NULL;

	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);

	if (sp)
	     error = soclose(sp);

	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);

	return (error);
}
Commit	Line	Data
1c79356b	1	/*
9bccf70c	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
43866e37	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
43866e37 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
43866e37 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* Copyright (c) 1982, 1986, 1990, 1993
	27	* The Regents of the University of California. All rights reserved.
	28	*
	29	* Redistribution and use in source and binary forms, with or without
	30	* modification, are permitted provided that the following conditions
	31	* are met:
	32	* 1. Redistributions of source code must retain the above copyright
	33	* notice, this list of conditions and the following disclaimer.
	34	* 2. Redistributions in binary form must reproduce the above copyright
	35	* notice, this list of conditions and the following disclaimer in the
	36	* documentation and/or other materials provided with the distribution.
	37	* 3. All advertising materials mentioning features or use of this software
	38	* must display the following acknowledgement:
	39	* This product includes software developed by the University of
	40	* California, Berkeley and its contributors.
	41	* 4. Neither the name of the University nor the names of its contributors
	42	* may be used to endorse or promote products derived from this software
	43	* without specific prior written permission.
	44	*
	45	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	46	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	47	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	48	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	49	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	50	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	51	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	52	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	53	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	54	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	55	* SUCH DAMAGE.
	56	*
	57	* @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
	58	*/
	59
	60	#include <sys/param.h>
	61	#include <sys/systm.h>
	62	#include <sys/file.h>
55e303ae	63	#include <sys/event.h>
1c79356b A	64	#include <sys/protosw.h>
	65	#include <sys/socket.h>
	66	#include <sys/socketvar.h>
	67	#include <sys/filio.h> /* XXX */
	68	#include <sys/sockio.h>
	69	#include <sys/stat.h>
	70	#include <sys/uio.h>
	71	#include <sys/filedesc.h>
	72
	73	#include <net/if.h>
	74	#include <net/route.h>
	75
	76	int soo_read __P((struct file fp, struct uio uio,
9bccf70c	77	struct ucred cred, int flags, struct proc p));
1c79356b	78	int soo_write __P((struct file fp, struct uio uio,
9bccf70c	79	struct ucred cred, int flags, struct proc p));
1c79356b A	80	int soo_close __P((struct file fp, struct proc p));
1c79356b A	81
0b4e3aa0	82	int soo_select __P((struct file fp, int which, void wql, struct proc *p));
1c79356b	83
55e303ae A	84	int soo_kqfilter __P((struct file fp, struct knote kn, struct proc *p));
55e303ae A	85
1c79356b	86	struct fileops socketops =
55e303ae	87	{ soo_read, soo_write, soo_ioctl, soo_select, soo_close, soo_kqfilter };
1c79356b A	88
	89	/* ARGSUSED */
	90	int
9bccf70c	91	soo_read(fp, uio, cred, flags, p)
1c79356b A	92	struct file *fp;
	93	struct uio *uio;
	94	struct ucred *cred;
9bccf70c A	95	int flags;
9bccf70c A	96	struct proc *p;
1c79356b	97	{
9bccf70c	98	struct socket *so;
1c79356b A	99	struct kextcb *kp;
	100	int stat;
	101	int (fsoreceive) __P((struct socket so,
	102	struct sockaddr **paddr,
	103	struct uio uio, struct mbuf *mp0,
	104	struct mbuf *controlp, int flagsp));
	105
0b4e3aa0	106
1c79356b	107	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
0b4e3aa0	108
9bccf70c A	109	if ((so = (struct socket *)fp->f_data) == NULL) {
	110	/* This is not a valid open file descriptor */
	111	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	112	return (EBADF);
	113	}
	114
1c79356b A	115	fsoreceive = so->so_proto->pr_usrreqs->pru_soreceive;
	116	if (fsoreceive != soreceive)
	117	{ kp = sotokextcb(so);
	118	while (kp)
	119	{ if (kp->e_soif && kp->e_soif->sf_soreceive)
	120	(*kp->e_soif->sf_soreceive)(so, 0, &uio,
	121	0, 0, 0, kp);
	122	kp = kp->e_next;
	123	}
	124
	125	}
	126
	127	stat = (*fsoreceive)(so, 0, uio, 0, 0, 0);
	128	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	129	return stat;
	130	}
	131
	132	/* ARGSUSED */
	133	int
9bccf70c	134	soo_write(fp, uio, cred, flags, p)
1c79356b A	135	struct file *fp;
	136	struct uio *uio;
	137	struct ucred *cred;
9bccf70c A	138	int flags;
9bccf70c A	139	struct proc *p;
1c79356b	140	{
9bccf70c	141	struct socket *so;
1c79356b A	142	int (fsosend) __P((struct socket so, struct sockaddr *addr,
	143	struct uio uio, struct mbuf top,
	144	struct mbuf *control, int flags));
	145	struct kextcb *kp;
	146	int stat;
	147
	148	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
9bccf70c A	149
	150	if ((so = (struct socket *)fp->f_data) == NULL) {
	151	/* This is not a valid open file descriptor */
	152	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	153	return (EBADF);
	154	}
	155
1c79356b A	156	fsosend = so->so_proto->pr_usrreqs->pru_sosend;
	157	if (fsosend != sosend)
	158	{ kp = sotokextcb(so);
	159	while (kp)
	160	{ if (kp->e_soif && kp->e_soif->sf_sosend)
	161	(*kp->e_soif->sf_sosend)(so, 0, &uio,
	162	0, 0, 0, kp);
	163	kp = kp->e_next;
	164	}
	165	}
	166
	167	stat = (*fsosend)(so, 0, uio, 0, 0, 0);
	168	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
9bccf70c A	169
	170	/* Generation of SIGPIPE can be controlled per socket */
	171	if (stat == EPIPE && uio->uio_procp && !(so->so_flags & SOF_NOSIGPIPE))
	172	psignal(uio->uio_procp, SIGPIPE);
	173
	174	return stat;
1c79356b A	175	}
	176
	177	int
	178	soo_ioctl(fp, cmd, data, p)
	179	struct file *fp;
	180	u_long cmd;
	181	register caddr_t data;
	182	struct proc *p;
	183	{
9bccf70c	184	register struct socket *so;
1c79356b A	185	struct sockopt sopt;
	186	struct kextcb *kp;
	187	int error = 0;
1c79356b A	188
	189	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	190
9bccf70c A	191	if ((so = (struct socket *)fp->f_data) == NULL) {
	192	/* This is not a valid open file descriptor */
	193	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	194	return (EBADF);
	195	}
	196
	197	kp = sotokextcb(so);
	198	sopt.sopt_level = cmd;
	199	sopt.sopt_name = (int)data;
	200	sopt.sopt_p = p;
	201
1c79356b A	202	while (kp)
	203	{ if (kp->e_soif && kp->e_soif->sf_socontrol)
	204	(*kp->e_soif->sf_socontrol)(so, &sopt, kp);
	205	kp = kp->e_next;
	206	}
	207
	208	switch (cmd) {
	209
	210	case FIONBIO:
	211	if ((int )data)
	212	so->so_state \|= SS_NBIO;
	213	else
	214	so->so_state &= ~SS_NBIO;
	215
	216	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	217	return (0);
	218
	219	case FIOASYNC:
	220	if ((int )data) {
	221	so->so_state \|= SS_ASYNC;
	222	so->so_rcv.sb_flags \|= SB_ASYNC;
	223	so->so_snd.sb_flags \|= SB_ASYNC;
	224	} else {
	225	so->so_state &= ~SS_ASYNC;
	226	so->so_rcv.sb_flags &= ~SB_ASYNC;
	227	so->so_snd.sb_flags &= ~SB_ASYNC;
	228	}
	229	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	230	return (0);
	231
	232	case FIONREAD:
	233	(int )data = so->so_rcv.sb_cc;
	234	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	235	return (0);
	236
	237	case SIOCSPGRP:
	238	so->so_pgid = (int )data;
	239	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	240	return (0);
	241
	242	case SIOCGPGRP:
	243	(int )data = so->so_pgid;
	244	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	245	return (0);
	246
	247	case SIOCATMARK:
	248	(int )data = (so->so_state&SS_RCVATMARK) != 0;
	249	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	250	return (0);
	251
	252	case SIOCSETOT: {
	253	/*
	254	* Set socket level options here and then call protocol
	255	* specific routine.
	256	*/
	257	struct socket *cloned_so = NULL;
	258	int cloned_fd = (int )data;
	259
	260	/* let's make sure it's either -1 or a valid file descriptor */
	261	if (cloned_fd != -1) {
	262	struct file *cloned_fp;
	263	error = getsock(p->p_fd, cloned_fd, &cloned_fp);
	264	if (error) {
	265	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
266	return (error);
267	}
268
269	cloned_so = (struct socket *)cloned_fp->f_data;
270	}
271
272	/* Always set socket non-blocking for OT */
273	fp->f_flag \|= FNONBLOCK;
274	so->so_state \|= SS_NBIO;
275	so->so_options \|= SO_DONTTRUNC \| SO_WANTMORE;
9bccf70c	276	so->so_flags \|= SOF_NOSIGPIPE;
1c79356b A	277
	278	if (cloned_so && so != cloned_so) {
	279	/* Flags options */
	280	so->so_options \|= cloned_so->so_options & ~SO_ACCEPTCONN;
	281
	282	/* SO_LINGER */
	283	if (so->so_options & SO_LINGER)
	284	so->so_linger = cloned_so->so_linger;
	285
	286	/* SO_SNDBUF, SO_RCVBUF */
	287	if (cloned_so->so_snd.sb_hiwat > 0) {
	288	if (sbreserve(&so->so_snd, cloned_so->so_snd.sb_hiwat) == 0) {
	289	error = ENOBUFS;
	290	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	291	return (error);
	292	}
	293	}
	294	if (cloned_so->so_rcv.sb_hiwat > 0) {
	295	if (sbreserve(&so->so_rcv, cloned_so->so_rcv.sb_hiwat) == 0) {
	296	error = ENOBUFS;
	297	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	298	return (error);
	299	}
	300	}
	301
	302	/* SO_SNDLOWAT, SO_RCVLOWAT */
	303	so->so_snd.sb_lowat =
	304	(cloned_so->so_snd.sb_lowat > so->so_snd.sb_hiwat) ?
	305	so->so_snd.sb_hiwat : cloned_so->so_snd.sb_lowat;
	306	so->so_rcv.sb_lowat =
	307	(cloned_so->so_rcv.sb_lowat > so->so_rcv.sb_hiwat) ?
	308	so->so_rcv.sb_hiwat : cloned_so->so_rcv.sb_lowat;
	309
	310	/* SO_SNDTIMEO, SO_RCVTIMEO */
	311	so->so_snd.sb_timeo = cloned_so->so_snd.sb_timeo;
	312	so->so_rcv.sb_timeo = cloned_so->so_rcv.sb_timeo;
	313	}
	314
	315	error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
	316	/* Just ignore protocols that do not understand it */
	317	if (error == EOPNOTSUPP)
	318	error = 0;
	319
	320	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	321	return (error);
	322	}
	323	}
	324	/*
	325	* Interface/routing/protocol specific ioctls:
	326	* interface and routing ioctls should have a
	327	* different entry since a socket's unnecessary
	328	*/
	329	if (IOCGROUP(cmd) == 'i')
	330	error = ifioctl(so, cmd, data, p);
	331	else
	332	if (IOCGROUP(cmd) == 'r')
	333	error = rtioctl(cmd, data, p);
	334	else
	335	error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
	336
	337	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	338	return error;
	339	}
	340
341	int
0b4e3aa0	342	soo_select(fp, which, wql, p)
1c79356b A	343	struct file *fp;
1c79356b A	344	int which;
0b4e3aa0	345	void * wql;
1c79356b A	346	struct proc *p;
	347	{
	348	register struct socket so = (struct socket )fp->f_data;
	349	register int s = splnet();
	350	int retnum=0;
	351
55e303ae	352	if (so == NULL \|\| so == (struct socket*)-1) goto done;
1c79356b A	353
	354	switch (which) {
	355
	356	case FREAD:
0b4e3aa0	357	so->so_rcv.sb_flags \|= SB_SEL;
1c79356b A	358	if (soreadable(so)) {
	359	splx(s);
	360	retnum = 1;
0b4e3aa0	361	so->so_rcv.sb_flags &= ~SB_SEL;
1c79356b A	362	goto done;
1c79356b A	363	}
0b4e3aa0	364	selrecord(p, &so->so_rcv.sb_sel, wql);
1c79356b A	365	break;
	366
	367	case FWRITE:
0b4e3aa0	368	so->so_snd.sb_flags \|= SB_SEL;
1c79356b A	369	if (sowriteable(so)) {
	370	splx(s);
	371	retnum = 1;
0b4e3aa0	372	so->so_snd.sb_flags &= ~SB_SEL;
1c79356b A	373	goto done;
1c79356b A	374	}
0b4e3aa0	375	selrecord(p, &so->so_snd.sb_sel, wql);
1c79356b A	376	break;
	377
	378	case 0:
0b4e3aa0	379	so->so_rcv.sb_flags \|= SB_SEL;
1c79356b A	380	if (so->so_oobmark \|\| (so->so_state & SS_RCVATMARK)) {
	381	splx(s);
	382	retnum = 1;
0b4e3aa0	383	so->so_rcv.sb_flags &= ~SB_SEL;
1c79356b A	384	goto done;
1c79356b A	385	}
0b4e3aa0	386	selrecord(p, &so->so_rcv.sb_sel, wql);
1c79356b A	387	break;
	388	}
	389	splx(s);
	390	done:
1c79356b A	391	return (retnum);
	392	}
	393
	394
	395	int
	396	soo_stat(so, ub)
	397	register struct socket *so;
	398	register struct stat *ub;
	399	{
9bccf70c	400	int stat;
1c79356b	401
9bccf70c A	402	/*
	403	* DANGER: by the time we get the network funnel the socket
	404	* may have been closed
	405	*/
1c79356b A	406	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	407	bzero((caddr_t)ub, sizeof (*ub));
	408	ub->st_mode = S_IFSOCK;
	409	stat = (*so->so_proto->pr_usrreqs->pru_sense)(so, ub);
	410	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	411	return stat;
	412	}
	413
	414	/* ARGSUSED */
	415	int
	416	soo_close(fp, p)
	417	struct file *fp;
	418	struct proc *p;
	419	{
	420	int error = 0;
55e303ae A	421	struct socket *sp;
	422
	423	sp = (struct socket *)fp->f_data;
	424	fp->f_data = NULL;
1c79356b	425
9bccf70c A	426	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
9bccf70c A	427
55e303ae A	428	if (sp)
55e303ae A	429	error = soclose(sp);
9bccf70c A	430
9bccf70c A	431	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
1c79356b	432
1c79356b A	433	return (error);
1c79356b A	434	}