[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_internal.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 <sys/kauth.h>
#include <sys/signalvar.h>

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

/*
 * File operations on sockets.
 */
int	soo_read(struct fileproc *fp, struct uio *uio, kauth_cred_t cred,
		int flags, struct proc *p);
int	soo_write(struct fileproc *fp, struct uio *uio, kauth_cred_t cred,
		int flags, struct proc *p);
int soo_close(struct fileglob *fp, struct proc *p);
int	soo_ioctl(struct fileproc *fp, u_long cmd, caddr_t data, struct proc *p);
int	soo_stat(struct socket *so, struct stat *ub);
int	soo_select(struct fileproc *fp, int which, void * wql, struct proc *p);
int     soo_kqfilter(struct fileproc *fp, struct knote *kn, struct proc *p);
int	soo_drain(struct fileproc *fp, struct proc *p);

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

/* ARGSUSED */
int
soo_read(
	struct fileproc *fp,
	struct uio *uio,
	__unused kauth_cred_t cred,
	__unused int flags,
	__unused struct proc *p)
{
	struct socket *so;
	int stat;
	int (*fsoreceive)(struct socket *so2, 
			       struct sockaddr **paddr,
			       struct uio *uio2, struct mbuf **mp0,
			       struct mbuf **controlp, int *flagsp);


        if ((so = (struct socket *)fp->f_fglob->fg_data) == NULL) {
                /* This is not a valid open file descriptor */
		return(EBADF);
        }
//###LD will have to change
	fsoreceive = so->so_proto->pr_usrreqs->pru_soreceive;
	
	stat = (*fsoreceive)(so, 0, uio, 0, 0, 0);
	return stat;
}

/* ARGSUSED */
int
soo_write(
	struct fileproc *fp,
	struct uio *uio,
	__unused kauth_cred_t cred,
	__unused int flags,
	struct proc *procp)
{
	struct socket *so;
	int	(*fsosend)(struct socket *so2, struct sockaddr *addr,
				struct uio *uio2, struct mbuf *top,
				struct mbuf *control, int flags2);
	int           stat;

	if ((so = (struct socket *)fp->f_fglob->fg_data) == NULL) {
		/* This is not a valid open file descriptor */
		return (EBADF);
	}

	fsosend = so->so_proto->pr_usrreqs->pru_sosend;

	stat = (*fsosend)(so, 0, uio, 0, 0, 0);

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

	return stat;
}

__private_extern__ int
soioctl(
	struct socket *so,
	u_long cmd,
	caddr_t data,
	struct proc *p)
{
	struct sockopt sopt;
	int    error = 0;
	int dropsockref = -1;


	socket_lock(so, 1);

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

	switch (cmd) {

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

		goto out;

	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;
		}
		goto out;

	case FIONREAD:
		*(int *)data = so->so_rcv.sb_cc;
		goto out;

	case SIOCSPGRP:
		so->so_pgid = *(int *)data;
		goto out;

	case SIOCGPGRP:
		*(int *)data = so->so_pgid;
		goto out;

	case SIOCATMARK:
	     *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
		goto out;

	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) {
		  error = file_socket(cloned_fd, &cloned_so);
		  if (error) {
			goto out;
		  }
		 dropsockref = cloned_fd;
	     }

	     /* Always set socket non-blocking for OT */
	     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;
			    goto out;
		       }
		  }
		  if (cloned_so->so_rcv.sb_hiwat > 0) {
		       if (sbreserve(&so->so_rcv, cloned_so->so_rcv.sb_hiwat) == 0) {
			    error = ENOBUFS;
			    goto out;
		       }
		  }

		  /* 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;

		goto out;
        }
	}
	/*
	 * Interface/routing/protocol specific ioctls:
	 * interface and routing ioctls should have a
	 * different entry since a socket's unnecessary
	 */
	if (IOCGROUP(cmd) == 'i')
	     error = ifioctllocked(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);

out:
	if (dropsockref != -1)
		file_drop(dropsockref);
	socket_unlock(so, 1);

	return error;
}

int
soo_ioctl(fp, cmd, data, p)
	struct fileproc *fp;
	u_long cmd;
	register caddr_t data;
	struct proc *p;
{
	register struct socket *so;
	int error;


	if ((so = (struct socket *)fp->f_fglob->fg_data) == NULL) {
		/* This is not a valid open file descriptor */
		return (EBADF);
	}
	
	error = soioctl(so, cmd, data, p);
	
	if (error == 0 && cmd == SIOCSETOT)
		fp->f_fglob->fg_flag |= FNONBLOCK;

	return error;
}

int
soo_select(fp, which, wql, p)
	struct fileproc *fp;
	int which;
	void * wql;
	struct proc *p;
{
	register struct socket *so = (struct socket *)fp->f_fglob->fg_data;
	int retnum=0;

	if (so == NULL || so == (struct socket*)-1)
		return (0);

	socket_lock(so, 1);
	switch (which) {

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


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

	bzero((caddr_t)ub, sizeof (*ub));
	socket_lock(so, 1);
	ub->st_mode = S_IFSOCK;
	stat = (*so->so_proto->pr_usrreqs->pru_sense)(so, ub);
	socket_unlock(so, 1);
	return stat;
}

/* ARGSUSED */
int
soo_close(struct fileglob *fg, __unused proc_t p)
{
	int error = 0;
	struct socket *sp;

	sp = (struct socket *)fg->fg_data;
	fg->fg_data = NULL;


	if (sp)
	     error = soclose(sp);


	return (error);
}

int
soo_drain(struct fileproc *fp, __unused struct proc *p)
{
	int error = 0;
	struct socket *so = (struct socket *)fp->f_fglob->fg_data;

	if (so) {
		socket_lock(so, 1);
		so->so_state |= SS_DRAINING;

		wakeup((caddr_t)&so->so_timeo);
		sorwakeup(so);
		sowwakeup(so);
	
		socket_unlock(so, 1);
	}

	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>
91447636	59	#include <sys/file_internal.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>
91447636 A	69	#include <sys/kauth.h>
91447636 A	70	#include <sys/signalvar.h>
1c79356b A	71
	72	#include <net/if.h>
	73	#include <net/route.h>
	74
91447636 A	75	/*
	76	* File operations on sockets.
	77	*/
	78	int soo_read(struct fileproc fp, struct uio uio, kauth_cred_t cred,
	79	int flags, struct proc *p);
	80	int soo_write(struct fileproc fp, struct uio uio, kauth_cred_t cred,
	81	int flags, struct proc *p);
	82	int soo_close(struct fileglob fp, struct proc p);
	83	int soo_ioctl(struct fileproc fp, u_long cmd, caddr_t data, struct proc p);
	84	int soo_stat(struct socket so, struct stat ub);
	85	int soo_select(struct fileproc fp, int which, void wql, struct proc *p);
	86	int soo_kqfilter(struct fileproc fp, struct knote kn, struct proc *p);
	87	int soo_drain(struct fileproc fp, struct proc p);
55e303ae	88
1c79356b	89	struct fileops socketops =
91447636	90	{ soo_read, soo_write, soo_ioctl, soo_select, soo_close, soo_kqfilter, soo_drain };
1c79356b A	91
	92	/* ARGSUSED */
	93	int
91447636 A	94	soo_read(
	95	struct fileproc *fp,
	96	struct uio *uio,
	97	__unused kauth_cred_t cred,
	98	__unused int flags,
	99	__unused struct proc *p)
1c79356b	100	{
9bccf70c	101	struct socket *so;
1c79356b	102	int stat;
91447636	103	int (fsoreceive)(struct socket so2,
1c79356b	104	struct sockaddr **paddr,
91447636 A	105	struct uio uio2, struct mbuf *mp0,
91447636 A	106	struct mbuf *controlp, int flagsp);
1c79356b	107
0b4e3aa0	108
0b4e3aa0	109
91447636	110	if ((so = (struct socket *)fp->f_fglob->fg_data) == NULL) {
9bccf70c	111	/* This is not a valid open file descriptor */
91447636	112	return(EBADF);
9bccf70c	113	}
91447636	114	//###LD will have to change
1c79356b	115	fsoreceive = so->so_proto->pr_usrreqs->pru_soreceive;
1c79356b A	116
1c79356b A	117	stat = (*fsoreceive)(so, 0, uio, 0, 0, 0);
1c79356b A	118	return stat;
	119	}
	120
	121	/* ARGSUSED */
	122	int
91447636 A	123	soo_write(
	124	struct fileproc *fp,
	125	struct uio *uio,
	126	__unused kauth_cred_t cred,
	127	__unused int flags,
	128	struct proc *procp)
1c79356b	129	{
9bccf70c	130	struct socket *so;
91447636 A	131	int (fsosend)(struct socket so2, struct sockaddr *addr,
	132	struct uio uio2, struct mbuf top,
	133	struct mbuf *control, int flags2);
1c79356b A	134	int stat;
1c79356b A	135
91447636 A	136	if ((so = (struct socket *)fp->f_fglob->fg_data) == NULL) {
	137	/* This is not a valid open file descriptor */
	138	return (EBADF);
	139	}
9bccf70c	140
1c79356b	141	fsosend = so->so_proto->pr_usrreqs->pru_sosend;
1c79356b A	142
1c79356b A	143	stat = (*fsosend)(so, 0, uio, 0, 0, 0);
9bccf70c	144
91447636 A	145	/* Generation of SIGPIPE can be controlled per socket */
	146	if (stat == EPIPE && procp && !(so->so_flags & SOF_NOSIGPIPE))
	147	psignal(procp, SIGPIPE);
9bccf70c	148
91447636	149	return stat;
1c79356b A	150	}
1c79356b A	151
91447636 A	152	__private_extern__ int
	153	soioctl(
	154	struct socket *so,
	155	u_long cmd,
	156	caddr_t data,
	157	struct proc *p)
1c79356b	158	{
1c79356b	159	struct sockopt sopt;
1c79356b	160	int error = 0;
91447636	161	int dropsockref = -1;
1c79356b	162
9bccf70c	163
91447636	164	socket_lock(so, 1);
9bccf70c	165
91447636 A	166	sopt.sopt_level = cmd;
	167	sopt.sopt_name = (int)data;
	168	sopt.sopt_p = p;
1c79356b A	169
	170	switch (cmd) {
	171
	172	case FIONBIO:
	173	if ((int )data)
	174	so->so_state \|= SS_NBIO;
	175	else
	176	so->so_state &= ~SS_NBIO;
	177
91447636	178	goto out;
1c79356b A	179
	180	case FIOASYNC:
	181	if ((int )data) {
	182	so->so_state \|= SS_ASYNC;
	183	so->so_rcv.sb_flags \|= SB_ASYNC;
	184	so->so_snd.sb_flags \|= SB_ASYNC;
	185	} else {
	186	so->so_state &= ~SS_ASYNC;
	187	so->so_rcv.sb_flags &= ~SB_ASYNC;
	188	so->so_snd.sb_flags &= ~SB_ASYNC;
	189	}
91447636	190	goto out;
1c79356b A	191
	192	case FIONREAD:
	193	(int )data = so->so_rcv.sb_cc;
91447636	194	goto out;
1c79356b A	195
	196	case SIOCSPGRP:
	197	so->so_pgid = (int )data;
91447636	198	goto out;
1c79356b A	199
	200	case SIOCGPGRP:
	201	(int )data = so->so_pgid;
91447636	202	goto out;
1c79356b A	203
	204	case SIOCATMARK:
	205	(int )data = (so->so_state&SS_RCVATMARK) != 0;
91447636	206	goto out;
1c79356b A	207
	208	case SIOCSETOT: {
	209	/*
	210	* Set socket level options here and then call protocol
	211	* specific routine.
	212	*/
	213	struct socket *cloned_so = NULL;
	214	int cloned_fd = (int )data;
	215
	216	/* let's make sure it's either -1 or a valid file descriptor */
	217	if (cloned_fd != -1) {
91447636	218	error = file_socket(cloned_fd, &cloned_so);
1c79356b	219	if (error) {
91447636	220	goto out;
1c79356b	221	}
91447636	222	dropsockref = cloned_fd;
1c79356b A	223	}
	224
	225	/* Always set socket non-blocking for OT */
1c79356b A	226	so->so_state \|= SS_NBIO;
1c79356b A	227	so->so_options \|= SO_DONTTRUNC \| SO_WANTMORE;
9bccf70c	228	so->so_flags \|= SOF_NOSIGPIPE;
1c79356b A	229
	230	if (cloned_so && so != cloned_so) {
	231	/* Flags options */
	232	so->so_options \|= cloned_so->so_options & ~SO_ACCEPTCONN;
	233
	234	/* SO_LINGER */
	235	if (so->so_options & SO_LINGER)
	236	so->so_linger = cloned_so->so_linger;
	237
	238	/* SO_SNDBUF, SO_RCVBUF */
	239	if (cloned_so->so_snd.sb_hiwat > 0) {
	240	if (sbreserve(&so->so_snd, cloned_so->so_snd.sb_hiwat) == 0) {
	241	error = ENOBUFS;
91447636	242	goto out;
1c79356b A	243	}
	244	}
	245	if (cloned_so->so_rcv.sb_hiwat > 0) {
	246	if (sbreserve(&so->so_rcv, cloned_so->so_rcv.sb_hiwat) == 0) {
	247	error = ENOBUFS;
91447636	248	goto out;
1c79356b A	249	}
	250	}
	251
	252	/* SO_SNDLOWAT, SO_RCVLOWAT */
	253	so->so_snd.sb_lowat =
	254	(cloned_so->so_snd.sb_lowat > so->so_snd.sb_hiwat) ?
	255	so->so_snd.sb_hiwat : cloned_so->so_snd.sb_lowat;
	256	so->so_rcv.sb_lowat =
	257	(cloned_so->so_rcv.sb_lowat > so->so_rcv.sb_hiwat) ?
	258	so->so_rcv.sb_hiwat : cloned_so->so_rcv.sb_lowat;
	259
91447636	260	/* SO_SNDTIMEO, SO_RCVTIMEO */
1c79356b A	261	so->so_snd.sb_timeo = cloned_so->so_snd.sb_timeo;
	262	so->so_rcv.sb_timeo = cloned_so->so_rcv.sb_timeo;
	263	}
	264
	265	error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
	266	/* Just ignore protocols that do not understand it */
	267	if (error == EOPNOTSUPP)
	268	error = 0;
	269
91447636	270	goto out;
1c79356b A	271	}
	272	}
	273	/*
	274	* Interface/routing/protocol specific ioctls:
	275	* interface and routing ioctls should have a
	276	* different entry since a socket's unnecessary
	277	*/
	278	if (IOCGROUP(cmd) == 'i')
91447636	279	error = ifioctllocked(so, cmd, data, p);
1c79356b A	280	else
	281	if (IOCGROUP(cmd) == 'r')
	282	error = rtioctl(cmd, data, p);
	283	else
	284	error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
	285
91447636 A	286	out:
	287	if (dropsockref != -1)
	288	file_drop(dropsockref);
	289	socket_unlock(so, 1);
	290
	291	return error;
	292	}
	293
	294	int
	295	soo_ioctl(fp, cmd, data, p)
	296	struct fileproc *fp;
	297	u_long cmd;
	298	register caddr_t data;
	299	struct proc *p;
	300	{
	301	register struct socket *so;
	302	int error;
	303
	304
	305	if ((so = (struct socket *)fp->f_fglob->fg_data) == NULL) {
	306	/* This is not a valid open file descriptor */
	307	return (EBADF);
	308	}
	309
	310	error = soioctl(so, cmd, data, p);
	311
	312	if (error == 0 && cmd == SIOCSETOT)
	313	fp->f_fglob->fg_flag \|= FNONBLOCK;
	314
1c79356b A	315	return error;
	316	}
	317
	318	int
0b4e3aa0	319	soo_select(fp, which, wql, p)
91447636	320	struct fileproc *fp;
1c79356b	321	int which;
0b4e3aa0	322	void * wql;
1c79356b A	323	struct proc *p;
1c79356b A	324	{
91447636	325	register struct socket so = (struct socket )fp->f_fglob->fg_data;
1c79356b A	326	int retnum=0;
1c79356b A	327
91447636 A	328	if (so == NULL \|\| so == (struct socket*)-1)
91447636 A	329	return (0);
1c79356b	330
91447636	331	socket_lock(so, 1);
1c79356b A	332	switch (which) {
	333
	334	case FREAD:
0b4e3aa0	335	so->so_rcv.sb_flags \|= SB_SEL;
1c79356b	336	if (soreadable(so)) {
1c79356b	337	retnum = 1;
0b4e3aa0	338	so->so_rcv.sb_flags &= ~SB_SEL;
1c79356b A	339	goto done;
1c79356b A	340	}
0b4e3aa0	341	selrecord(p, &so->so_rcv.sb_sel, wql);
1c79356b A	342	break;
	343
	344	case FWRITE:
0b4e3aa0	345	so->so_snd.sb_flags \|= SB_SEL;
1c79356b	346	if (sowriteable(so)) {
1c79356b	347	retnum = 1;
0b4e3aa0	348	so->so_snd.sb_flags &= ~SB_SEL;
1c79356b A	349	goto done;
1c79356b A	350	}
0b4e3aa0	351	selrecord(p, &so->so_snd.sb_sel, wql);
1c79356b A	352	break;
	353
	354	case 0:
0b4e3aa0	355	so->so_rcv.sb_flags \|= SB_SEL;
1c79356b	356	if (so->so_oobmark \|\| (so->so_state & SS_RCVATMARK)) {
1c79356b	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;
1c79356b A	363	}
91447636	364
1c79356b	365	done:
91447636	366	socket_unlock(so, 1);
1c79356b A	367	return (retnum);
	368	}
	369
	370
	371	int
	372	soo_stat(so, ub)
	373	register struct socket *so;
	374	register struct stat *ub;
	375	{
9bccf70c	376	int stat;
1c79356b	377
1c79356b	378	bzero((caddr_t)ub, sizeof (*ub));
91447636	379	socket_lock(so, 1);
1c79356b A	380	ub->st_mode = S_IFSOCK;
1c79356b A	381	stat = (*so->so_proto->pr_usrreqs->pru_sense)(so, ub);
91447636	382	socket_unlock(so, 1);
1c79356b A	383	return stat;
	384	}
	385
	386	/* ARGSUSED */
	387	int
91447636	388	soo_close(struct fileglob *fg, __unused proc_t p)
1c79356b A	389	{
1c79356b A	390	int error = 0;
55e303ae A	391	struct socket *sp;
55e303ae A	392
91447636 A	393	sp = (struct socket *)fg->fg_data;
91447636 A	394	fg->fg_data = NULL;
1c79356b	395
9bccf70c	396
55e303ae A	397	if (sp)
55e303ae A	398	error = soclose(sp);
9bccf70c	399
1c79356b	400
1c79356b A	401	return (error);
1c79356b A	402	}
91447636 A	403
	404	int
	405	soo_drain(struct fileproc fp, __unused struct proc p)
	406	{
	407	int error = 0;
	408	struct socket so = (struct socket )fp->f_fglob->fg_data;
	409
	410	if (so) {
	411	socket_lock(so, 1);
	412	so->so_state \|= SS_DRAINING;
	413
	414	wakeup((caddr_t)&so->so_timeo);
	415	sorwakeup(so);
	416	sowwakeup(so);
	417
	418	socket_unlock(so, 1);
	419	}
	420
	421	return error;
	422	}
	423