[unix-history] / sys / kern / sys_socket.c

/*
 * Copyright (c) 1982, 1986, 1990 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.
 *
 *	from: @(#)sys_socket.c	7.11 (Berkeley) 4/16/91
 *	$Id$
 */

#include "param.h"
#include "systm.h"
#include "file.h"
#include "mbuf.h"
#include "protosw.h"
#include "socket.h"
#include "socketvar.h"
#include "ioctl.h"
#include "stat.h"

#include "net/if.h"
#include "net/route.h"

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

/* ARGSUSED */
soo_read(fp, uio, cred)
	struct file *fp;
	struct uio *uio;
	struct ucred *cred;
{

	return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0,
		uio, (struct mbuf **)0, (struct mbuf **)0, (int *)0));
}

/* ARGSUSED */
soo_write(fp, uio, cred)
	struct file *fp;
	struct uio *uio;
	struct ucred *cred;
{

	return (sosend((struct socket *)fp->f_data, (struct mbuf *)0,
		uio, (struct mbuf *)0, (struct mbuf *)0, 0));
}

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

	switch (cmd) {

	case FIONBIO:
		if (*(int *)data)
			so->so_state |= SS_NBIO;
		else
			so->so_state &= ~SS_NBIO;
		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;
		}
		return (0);

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

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

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

	case SIOCATMARK:
		*(int *)data = (so->so_state&SS_RCVATMARK) != 0;
		return (0);
	}
	/*
	 * Interface/routing/protocol specific ioctls:
	 * interface and routing ioctls should have a
	 * different entry since a socket's unnecessary
	 */
	if (IOCGROUP(cmd) == 'i')
		return (ifioctl(so, cmd, data, p));
	if (IOCGROUP(cmd) == 'r')
		return (rtioctl(cmd, data, p));
	return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 
	    (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0));
}

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

	switch (which) {

	case FREAD:
		if (soreadable(so)) {
			splx(s);
			return (1);
		}
		sbselqueue(&so->so_rcv, p);
		break;

	case FWRITE:
		if (sowriteable(so)) {
			splx(s);
			return (1);
		}
		sbselqueue(&so->so_snd, p);
		break;

	case 0:
		if (so->so_oobmark ||
		    (so->so_state & SS_RCVATMARK)) {
			splx(s);
			return (1);
		}
		sbselqueue(&so->so_rcv, p);
		break;
	}
	splx(s);
	return (0);
}

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

	bzero((caddr_t)ub, sizeof (*ub));
	return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE,
	    (struct mbuf *)ub, (struct mbuf *)0, 
	    (struct mbuf *)0));
}

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

	if (fp->f_data)
		error = soclose((struct socket *)fp->f_data);
	fp->f_data = 0;
	return (error);
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1982, 1986, 1990 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
78ed81a3	33	* from: @(#)sys_socket.c 7.11 (Berkeley) 4/16/91
78ed81a3	34	* $Id$
15637ed4 RG	35	*/
	36
	37	#include "param.h"
	38	#include "systm.h"
	39	#include "file.h"
	40	#include "mbuf.h"
	41	#include "protosw.h"
	42	#include "socket.h"
	43	#include "socketvar.h"
	44	#include "ioctl.h"
	45	#include "stat.h"
	46
	47	#include "net/if.h"
	48	#include "net/route.h"
	49
	50	struct fileops socketops =
	51	{ soo_read, soo_write, soo_ioctl, soo_select, soo_close };
	52
	53	/* ARGSUSED */
	54	soo_read(fp, uio, cred)
	55	struct file *fp;
	56	struct uio *uio;
	57	struct ucred *cred;
	58	{
	59
	60	return (soreceive((struct socket )fp->f_data, (struct mbuf *)0,
	61	uio, (struct mbuf )0, (struct mbuf )0, (int *)0));
	62	}
	63
	64	/* ARGSUSED */
	65	soo_write(fp, uio, cred)
	66	struct file *fp;
	67	struct uio *uio;
	68	struct ucred *cred;
	69	{
	70
	71	return (sosend((struct socket )fp->f_data, (struct mbuf )0,
	72	uio, (struct mbuf )0, (struct mbuf )0, 0));
	73	}
	74
	75	soo_ioctl(fp, cmd, data, p)
	76	struct file *fp;
	77	int cmd;
	78	register caddr_t data;
	79	struct proc *p;
	80	{
	81	register struct socket so = (struct socket )fp->f_data;
	82
	83	switch (cmd) {
	84
	85	case FIONBIO:
	86	if ((int )data)
	87	so->so_state \|= SS_NBIO;
	88	else
	89	so->so_state &= ~SS_NBIO;
	90	return (0);
	91
	92	case FIOASYNC:
	93	if ((int )data) {
	94	so->so_state \|= SS_ASYNC;
	95	so->so_rcv.sb_flags \|= SB_ASYNC;
	96	so->so_snd.sb_flags \|= SB_ASYNC;
	97	} else {
	98	so->so_state &= ~SS_ASYNC;
99	so->so_rcv.sb_flags &= ~SB_ASYNC;
100	so->so_snd.sb_flags &= ~SB_ASYNC;
101	}
102	return (0);
103
104	case FIONREAD:
105	(int )data = so->so_rcv.sb_cc;
106	return (0);
107
108	case SIOCSPGRP:
109	so->so_pgid = (int )data;
110	return (0);
111
112	case SIOCGPGRP:
113	(int )data = so->so_pgid;
114	return (0);
115
116	case SIOCATMARK:
117	(int )data = (so->so_state&SS_RCVATMARK) != 0;
118	return (0);
119	}
120	/*
121	* Interface/routing/protocol specific ioctls:
122	* interface and routing ioctls should have a
123	* different entry since a socket's unnecessary
124	*/
125	if (IOCGROUP(cmd) == 'i')
126	return (ifioctl(so, cmd, data, p));
127	if (IOCGROUP(cmd) == 'r')
128	return (rtioctl(cmd, data, p));
129	return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
130	(struct mbuf )cmd, (struct mbuf )data, (struct mbuf *)0));
131	}
132
133	soo_select(fp, which, p)
134	struct file *fp;
135	int which;
136	struct proc *p;
137	{
138	register struct socket so = (struct socket )fp->f_data;
139	register int s = splnet();
140
141	switch (which) {
142
143	case FREAD:
144	if (soreadable(so)) {
145	splx(s);
146	return (1);
147	}
148	sbselqueue(&so->so_rcv, p);
149	break;
150
151	case FWRITE:
152	if (sowriteable(so)) {
153	splx(s);
154	return (1);
155	}
156	sbselqueue(&so->so_snd, p);
157	break;
158
159	case 0:
160	if (so->so_oobmark \|\|
161	(so->so_state & SS_RCVATMARK)) {
162	splx(s);
163	return (1);
164	}
165	sbselqueue(&so->so_rcv, p);
166	break;
167	}
168	splx(s);
169	return (0);
170	}
171
172	soo_stat(so, ub)
173	register struct socket *so;
174	register struct stat *ub;
175	{
176
177	bzero((caddr_t)ub, sizeof (*ub));
178	return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE,
179	(struct mbuf )ub, (struct mbuf )0,
180	(struct mbuf *)0));
181	}
182
183	/* ARGSUSED */
184	soo_close(fp, p)
185	struct file *fp;
186	struct proc *p;
187	{
188	int error = 0;
189
190	if (fp->f_data)
191	error = soclose((struct socket *)fp->f_data);
192	fp->f_data = 0;
193	return (error);
194	}