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

/*
 * Copyright (c) 2000-2002 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/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	*
e5568f75 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	*
e5568f75 A	12	* This Original Code and all software distributed under the License are
e5568f75 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,
e5568f75 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) 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>
55e303ae	60	#include <sys/event.h>
1c79356b A	61	#include <sys/protosw.h>
	62	#include <sys/socket.h>
	63	#include <sys/socketvar.h>
	64	#include <sys/filio.h> /* XXX */
	65	#include <sys/sockio.h>
	66	#include <sys/stat.h>
	67	#include <sys/uio.h>
	68	#include <sys/filedesc.h>
	69
	70	#include <net/if.h>
	71	#include <net/route.h>
	72
	73	int soo_read __P((struct file fp, struct uio uio,
9bccf70c	74	struct ucred cred, int flags, struct proc p));
1c79356b	75	int soo_write __P((struct file fp, struct uio uio,
9bccf70c	76	struct ucred cred, int flags, struct proc p));
1c79356b A	77	int soo_close __P((struct file fp, struct proc p));
1c79356b A	78
0b4e3aa0	79	int soo_select __P((struct file fp, int which, void wql, struct proc *p));
1c79356b	80
55e303ae A	81	int soo_kqfilter __P((struct file fp, struct knote kn, struct proc *p));
55e303ae A	82
1c79356b	83	struct fileops socketops =
55e303ae	84	{ soo_read, soo_write, soo_ioctl, soo_select, soo_close, soo_kqfilter };
1c79356b A	85
	86	/* ARGSUSED */
	87	int
9bccf70c	88	soo_read(fp, uio, cred, flags, p)
1c79356b A	89	struct file *fp;
	90	struct uio *uio;
	91	struct ucred *cred;
9bccf70c A	92	int flags;
9bccf70c A	93	struct proc *p;
1c79356b	94	{
9bccf70c	95	struct socket *so;
1c79356b A	96	struct kextcb *kp;
	97	int stat;
	98	int (fsoreceive) __P((struct socket so,
	99	struct sockaddr **paddr,
	100	struct uio uio, struct mbuf *mp0,
	101	struct mbuf *controlp, int flagsp));
	102
0b4e3aa0	103
1c79356b	104	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
0b4e3aa0	105
9bccf70c A	106	if ((so = (struct socket *)fp->f_data) == NULL) {
	107	/* This is not a valid open file descriptor */
	108	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	109	return (EBADF);
	110	}
	111
1c79356b A	112	fsoreceive = so->so_proto->pr_usrreqs->pru_soreceive;
	113	if (fsoreceive != soreceive)
	114	{ kp = sotokextcb(so);
	115	while (kp)
	116	{ if (kp->e_soif && kp->e_soif->sf_soreceive)
	117	(*kp->e_soif->sf_soreceive)(so, 0, &uio,
	118	0, 0, 0, kp);
	119	kp = kp->e_next;
	120	}
	121
	122	}
	123
	124	stat = (*fsoreceive)(so, 0, uio, 0, 0, 0);
	125	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	126	return stat;
	127	}
	128
	129	/* ARGSUSED */
	130	int
9bccf70c	131	soo_write(fp, uio, cred, flags, p)
1c79356b A	132	struct file *fp;
	133	struct uio *uio;
	134	struct ucred *cred;
9bccf70c A	135	int flags;
9bccf70c A	136	struct proc *p;
1c79356b	137	{
9bccf70c	138	struct socket *so;
1c79356b A	139	int (fsosend) __P((struct socket so, struct sockaddr *addr,
	140	struct uio uio, struct mbuf top,
	141	struct mbuf *control, int flags));
	142	struct kextcb *kp;
	143	int stat;
	144
	145	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
9bccf70c A	146
	147	if ((so = (struct socket *)fp->f_data) == NULL) {
	148	/* This is not a valid open file descriptor */
	149	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	150	return (EBADF);
	151	}
	152
1c79356b A	153	fsosend = so->so_proto->pr_usrreqs->pru_sosend;
	154	if (fsosend != sosend)
	155	{ kp = sotokextcb(so);
	156	while (kp)
	157	{ if (kp->e_soif && kp->e_soif->sf_sosend)
	158	(*kp->e_soif->sf_sosend)(so, 0, &uio,
	159	0, 0, 0, kp);
	160	kp = kp->e_next;
	161	}
	162	}
	163
	164	stat = (*fsosend)(so, 0, uio, 0, 0, 0);
	165	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
9bccf70c A	166
	167	/* Generation of SIGPIPE can be controlled per socket */
	168	if (stat == EPIPE && uio->uio_procp && !(so->so_flags & SOF_NOSIGPIPE))
	169	psignal(uio->uio_procp, SIGPIPE);
	170
	171	return stat;
1c79356b A	172	}
	173
	174	int
	175	soo_ioctl(fp, cmd, data, p)
	176	struct file *fp;
	177	u_long cmd;
	178	register caddr_t data;
	179	struct proc *p;
	180	{
9bccf70c	181	register struct socket *so;
1c79356b A	182	struct sockopt sopt;
	183	struct kextcb *kp;
	184	int error = 0;
1c79356b A	185
	186	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	187
9bccf70c A	188	if ((so = (struct socket *)fp->f_data) == NULL) {
	189	/* This is not a valid open file descriptor */
	190	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	191	return (EBADF);
	192	}
	193
	194	kp = sotokextcb(so);
	195	sopt.sopt_level = cmd;
	196	sopt.sopt_name = (int)data;
	197	sopt.sopt_p = p;
	198
1c79356b A	199	while (kp)
	200	{ if (kp->e_soif && kp->e_soif->sf_socontrol)
	201	(*kp->e_soif->sf_socontrol)(so, &sopt, kp);
	202	kp = kp->e_next;
	203	}
	204
	205	switch (cmd) {
	206
	207	case FIONBIO:
	208	if ((int )data)
	209	so->so_state \|= SS_NBIO;
	210	else
	211	so->so_state &= ~SS_NBIO;
	212
	213	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	214	return (0);
	215
	216	case FIOASYNC:
	217	if ((int )data) {
	218	so->so_state \|= SS_ASYNC;
	219	so->so_rcv.sb_flags \|= SB_ASYNC;
	220	so->so_snd.sb_flags \|= SB_ASYNC;
	221	} else {
	222	so->so_state &= ~SS_ASYNC;
	223	so->so_rcv.sb_flags &= ~SB_ASYNC;
	224	so->so_snd.sb_flags &= ~SB_ASYNC;
	225	}
	226	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	227	return (0);
	228
	229	case FIONREAD:
	230	(int )data = so->so_rcv.sb_cc;
	231	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	232	return (0);
	233
	234	case SIOCSPGRP:
	235	so->so_pgid = (int )data;
	236	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	237	return (0);
	238
	239	case SIOCGPGRP:
	240	(int )data = so->so_pgid;
	241	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	242	return (0);
	243
	244	case SIOCATMARK:
	245	(int )data = (so->so_state&SS_RCVATMARK) != 0;
	246	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	247	return (0);
	248
	249	case SIOCSETOT: {
	250	/*
	251	* Set socket level options here and then call protocol
	252	* specific routine.
	253	*/
	254	struct socket *cloned_so = NULL;
	255	int cloned_fd = (int )data;
	256
	257	/* let's make sure it's either -1 or a valid file descriptor */
	258	if (cloned_fd != -1) {
	259	struct file *cloned_fp;
	260	error = getsock(p->p_fd, cloned_fd, &cloned_fp);
	261	if (error) {
	262	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
263	return (error);
264	}
265
266	cloned_so = (struct socket *)cloned_fp->f_data;
267	}
268
269	/* Always set socket non-blocking for OT */
270	fp->f_flag \|= FNONBLOCK;
271	so->so_state \|= SS_NBIO;
272	so->so_options \|= SO_DONTTRUNC \| SO_WANTMORE;
9bccf70c	273	so->so_flags \|= SOF_NOSIGPIPE;
1c79356b A	274
	275	if (cloned_so && so != cloned_so) {
	276	/* Flags options */
	277	so->so_options \|= cloned_so->so_options & ~SO_ACCEPTCONN;
	278
	279	/* SO_LINGER */
	280	if (so->so_options & SO_LINGER)
	281	so->so_linger = cloned_so->so_linger;
	282
	283	/* SO_SNDBUF, SO_RCVBUF */
	284	if (cloned_so->so_snd.sb_hiwat > 0) {
	285	if (sbreserve(&so->so_snd, cloned_so->so_snd.sb_hiwat) == 0) {
	286	error = ENOBUFS;
	287	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	288	return (error);
	289	}
	290	}
	291	if (cloned_so->so_rcv.sb_hiwat > 0) {
	292	if (sbreserve(&so->so_rcv, cloned_so->so_rcv.sb_hiwat) == 0) {
	293	error = ENOBUFS;
	294	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	295	return (error);
	296	}
	297	}
	298
	299	/* SO_SNDLOWAT, SO_RCVLOWAT */
	300	so->so_snd.sb_lowat =
	301	(cloned_so->so_snd.sb_lowat > so->so_snd.sb_hiwat) ?
	302	so->so_snd.sb_hiwat : cloned_so->so_snd.sb_lowat;
	303	so->so_rcv.sb_lowat =
	304	(cloned_so->so_rcv.sb_lowat > so->so_rcv.sb_hiwat) ?
	305	so->so_rcv.sb_hiwat : cloned_so->so_rcv.sb_lowat;
	306
	307	/* SO_SNDTIMEO, SO_RCVTIMEO */
	308	so->so_snd.sb_timeo = cloned_so->so_snd.sb_timeo;
	309	so->so_rcv.sb_timeo = cloned_so->so_rcv.sb_timeo;
	310	}
	311
	312	error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
	313	/* Just ignore protocols that do not understand it */
	314	if (error == EOPNOTSUPP)
	315	error = 0;
	316
	317	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	318	return (error);
	319	}
	320	}
	321	/*
	322	* Interface/routing/protocol specific ioctls:
	323	* interface and routing ioctls should have a
	324	* different entry since a socket's unnecessary
	325	*/
	326	if (IOCGROUP(cmd) == 'i')
	327	error = ifioctl(so, cmd, data, p);
	328	else
	329	if (IOCGROUP(cmd) == 'r')
	330	error = rtioctl(cmd, data, p);
	331	else
	332	error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
	333
	334	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	335	return error;
	336	}
	337
338	int
0b4e3aa0	339	soo_select(fp, which, wql, p)
1c79356b A	340	struct file *fp;
1c79356b A	341	int which;
0b4e3aa0	342	void * wql;
1c79356b A	343	struct proc *p;
	344	{
	345	register struct socket so = (struct socket )fp->f_data;
	346	register int s = splnet();
	347	int retnum=0;
	348
55e303ae	349	if (so == NULL \|\| so == (struct socket*)-1) goto done;
1c79356b A	350
	351	switch (which) {
	352
	353	case FREAD:
0b4e3aa0	354	so->so_rcv.sb_flags \|= SB_SEL;
1c79356b A	355	if (soreadable(so)) {
	356	splx(s);
	357	retnum = 1;
0b4e3aa0	358	so->so_rcv.sb_flags &= ~SB_SEL;
1c79356b A	359	goto done;
1c79356b A	360	}
0b4e3aa0	361	selrecord(p, &so->so_rcv.sb_sel, wql);
1c79356b A	362	break;
	363
	364	case FWRITE:
0b4e3aa0	365	so->so_snd.sb_flags \|= SB_SEL;
1c79356b A	366	if (sowriteable(so)) {
	367	splx(s);
	368	retnum = 1;
0b4e3aa0	369	so->so_snd.sb_flags &= ~SB_SEL;
1c79356b A	370	goto done;
1c79356b A	371	}
0b4e3aa0	372	selrecord(p, &so->so_snd.sb_sel, wql);
1c79356b A	373	break;
	374
	375	case 0:
0b4e3aa0	376	so->so_rcv.sb_flags \|= SB_SEL;
1c79356b A	377	if (so->so_oobmark \|\| (so->so_state & SS_RCVATMARK)) {
	378	splx(s);
	379	retnum = 1;
0b4e3aa0	380	so->so_rcv.sb_flags &= ~SB_SEL;
1c79356b A	381	goto done;
1c79356b A	382	}
0b4e3aa0	383	selrecord(p, &so->so_rcv.sb_sel, wql);
1c79356b A	384	break;
	385	}
	386	splx(s);
	387	done:
1c79356b A	388	return (retnum);
	389	}
	390
	391
	392	int
	393	soo_stat(so, ub)
	394	register struct socket *so;
	395	register struct stat *ub;
	396	{
9bccf70c	397	int stat;
1c79356b	398
9bccf70c A	399	/*
	400	* DANGER: by the time we get the network funnel the socket
	401	* may have been closed
	402	*/
1c79356b A	403	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	404	bzero((caddr_t)ub, sizeof (*ub));
	405	ub->st_mode = S_IFSOCK;
	406	stat = (*so->so_proto->pr_usrreqs->pru_sense)(so, ub);
	407	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
	408	return stat;
	409	}
	410
	411	/* ARGSUSED */
	412	int
	413	soo_close(fp, p)
	414	struct file *fp;
	415	struct proc *p;
	416	{
	417	int error = 0;
55e303ae A	418	struct socket *sp;
	419
	420	sp = (struct socket *)fp->f_data;
	421	fp->f_data = NULL;
1c79356b	422
9bccf70c A	423	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
9bccf70c A	424
55e303ae A	425	if (sp)
55e303ae A	426	error = soclose(sp);
9bccf70c A	427
9bccf70c A	428	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
1c79356b	429
1c79356b A	430	return (error);
1c79356b A	431	}