1/*
2 * Copyright (c) 1982, 1986, 1990, 1993
3 * The Regents of the University of California. 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 *
33 * @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
34 * $Id: sys_socket.c,v 1.18 1998/06/07 17:11:40 dfr Exp $
35 */
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/file.h>
40#include <sys/protosw.h>
41#include <sys/socket.h>
42#include <sys/socketvar.h>
43#include <sys/filio.h> /* XXX */
44#include <sys/sockio.h>
45#include <sys/stat.h>
46#include <sys/uio.h>
47#include <sys/filedesc.h>
48
49#include <net/if.h>
50#include <net/route.h>
51
52static int soo_read __P((struct file *fp, struct uio *uio,
53 struct ucred *cred));
54static int soo_write __P((struct file *fp, struct uio *uio,
55 struct ucred *cred));
56static int soo_close __P((struct file *fp, struct proc *p));
57
58struct fileops socketops =
59 { soo_read, soo_write, soo_ioctl, soo_poll, soo_close };
60
61/* ARGSUSED */
62static int
63soo_read(fp, uio, cred)
64 struct file *fp;
65 struct uio *uio;
66 struct ucred *cred;
67{
68 struct socket *so = (struct socket *)fp->f_data;
69 return so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0);
70}
71
72/* ARGSUSED */
73static int
74soo_write(fp, uio, cred)
75 struct file *fp;
76 struct uio *uio;
77 struct ucred *cred;
78{
79 struct socket *so = (struct socket *)fp->f_data;
80 return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0,
81 uio->uio_procp);
82}
83
84int
85soo_ioctl(fp, cmd, data, p)
86 struct file *fp;
87 u_long cmd;
88 register caddr_t data;
89 struct proc *p;
90{
91 register struct socket *so = (struct socket *)fp->f_data;
92
93 switch (cmd) {
94
95 case FIONBIO:
96 if (*(int *)data)
97 so->so_state |= SS_NBIO;
98 else
99 so->so_state &= ~SS_NBIO;
100 return (0);
101
102 case FIOASYNC:
103 if (*(int *)data) {
104 so->so_state |= SS_ASYNC;
105 so->so_rcv.sb_flags |= SB_ASYNC;
106 so->so_snd.sb_flags |= SB_ASYNC;
107 } else {
108 so->so_state &= ~SS_ASYNC;
109 so->so_rcv.sb_flags &= ~SB_ASYNC;
110 so->so_snd.sb_flags &= ~SB_ASYNC;
111 }
112 return (0);
113
114 case FIONREAD:
115 *(int *)data = so->so_rcv.sb_cc;
116 return (0);
117
118 case FIOSETOWN:
119 return (fsetown(*(int *)data, &so->so_sigio));
120
121 case FIOGETOWN:
122 *(int *)data = fgetown(so->so_sigio);
123 return (0);
124
125 case SIOCSPGRP:
126 return (fsetown(-(*(int *)data), &so->so_sigio));
127
128 case SIOCGPGRP:
129 *(int *)data = -fgetown(so->so_sigio);
130 return (0);
131
132 case SIOCATMARK:
133 *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
134 return (0);
135 }
136 /*
137 * Interface/routing/protocol specific ioctls:
138 * interface and routing ioctls should have a
139 * different entry since a socket's unnecessary
140 */
141 if (IOCGROUP(cmd) == 'i')
142 return (ifioctl(so, cmd, data, p));
143 if (IOCGROUP(cmd) == 'r')
144 return (rtioctl(cmd, data, p));
145 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p));
146}
147
148int
149soo_poll(fp, events, cred, p)
150 struct file *fp;
151 int events;
152 struct ucred *cred;
153 struct proc *p;
154{
155 struct socket *so = (struct socket *)fp->f_data;
156 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, p);
157}
158
159int
160soo_stat(so, ub)
161 register struct socket *so;
162 register struct stat *ub;
163{
164
165 bzero((caddr_t)ub, sizeof (*ub));
166 ub->st_mode = S_IFSOCK;
167 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub));
168}
169
170/* ARGSUSED */
171static int
172soo_close(fp, p)
173 struct file *fp;
174 struct proc *p;
175{
176 int error = 0;
177
178 if (fp->f_data)
179 error = soclose((struct socket *)fp->f_data);
180 fp->f_data = 0;
181 return (error);
182}