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
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50#include <sys/stat.h>
51
52#include <net/if.h>
53#include <net/route.h>
54
55static int soo_read __P((struct file *fp, struct uio *uio,
56 struct ucred *cred));
57static int soo_write __P((struct file *fp, struct uio *uio,
58 struct ucred *cred));
59static int soo_close __P((struct file *fp, struct proc *p));
60
61struct fileops socketops =
62 { soo_read, soo_write, soo_ioctl, soo_select, soo_close };
63
64/* ARGSUSED */
65static int
66soo_read(fp, uio, cred)
67 struct file *fp;
68 struct uio *uio;
69 struct ucred *cred;
70{
71
72 return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0,
73 uio, (struct mbuf **)0, (struct mbuf **)0, (int *)0));
74}
75
76/* ARGSUSED */
77static int
78soo_write(fp, uio, cred)
79 struct file *fp;
80 struct uio *uio;
81 struct ucred *cred;
82{
83
84 return (sosend((struct socket *)fp->f_data, (struct mbuf *)0,
85 uio, (struct mbuf *)0, (struct mbuf *)0, 0));
86}
87
88int
89soo_ioctl(fp, cmd, data, p)
90 struct file *fp;
91 int cmd;
92 register caddr_t data;
93 struct proc *p;
94{
95 register struct socket *so = (struct socket *)fp->f_data;
96
97 switch (cmd) {
98
99 case FIONBIO:
100 if (*(int *)data)
101 so->so_state |= SS_NBIO;
102 else
103 so->so_state &= ~SS_NBIO;
104 return (0);
105
106 case FIOASYNC:
107 if (*(int *)data) {
108 so->so_state |= SS_ASYNC;
109 so->so_rcv.sb_flags |= SB_ASYNC;
110 so->so_snd.sb_flags |= SB_ASYNC;
111 } else {
112 so->so_state &= ~SS_ASYNC;
113 so->so_rcv.sb_flags &= ~SB_ASYNC;
114 so->so_snd.sb_flags &= ~SB_ASYNC;
115 }
116 return (0);
117
118 case FIONREAD:
119 *(int *)data = so->so_rcv.sb_cc;
120 return (0);
121
122 case SIOCSPGRP:
123 so->so_pgid = *(int *)data;
124 return (0);
125
126 case SIOCGPGRP:
127 *(int *)data = so->so_pgid;
128 return (0);
129
130 case SIOCATMARK:
131 *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
132 return (0);
133 }
134 /*
135 * Interface/routing/protocol specific ioctls:
136 * interface and routing ioctls should have a
137 * different entry since a socket's unnecessary
138 */
139 if (IOCGROUP(cmd) == 'i')
140 return (ifioctl(so, cmd, data, p));
141 if (IOCGROUP(cmd) == 'r')
142 return (rtioctl(cmd, data, p));
143 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0));
144}
145
146int
147soo_select(fp, which, p)
148 struct file *fp;
149 int which;
150 struct proc *p;
151{
152 register struct socket *so = (struct socket *)fp->f_data;
153 register int s = splnet();
154
155 switch (which) {
156
157 case FREAD:
158 if (soreadable(so)) {
159 splx(s);
160 return (1);
161 }
162 selrecord(p, &so->so_rcv.sb_sel);
163 so->so_rcv.sb_flags |= SB_SEL;
164 break;
165
166 case FWRITE:
167 if (sowriteable(so)) {
168 splx(s);
169 return (1);
170 }
171 selrecord(p, &so->so_snd.sb_sel);
172 so->so_snd.sb_flags |= SB_SEL;
173 break;
174
175 case 0:
176 if (so->so_oobmark || (so->so_state & SS_RCVATMARK)) {
177 splx(s);
178 return (1);
179 }
180 selrecord(p, &so->so_rcv.sb_sel);
181 so->so_rcv.sb_flags |= SB_SEL;
182 break;
183 }
184 splx(s);
185 return (0);
186}
187
188int
189soo_stat(so, ub)
190 register struct socket *so;
191 register struct stat *ub;
192{
193
194 bzero((caddr_t)ub, sizeof (*ub));
195 ub->st_mode = S_IFSOCK;
196 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub));
197}
198
199/* ARGSUSED */
200static int
201soo_close(fp, p)
202 struct file *fp;
203 struct proc *p;
204{
205 int error = 0;
206
207 if (fp->f_data)
208 error = soclose((struct socket *)fp->f_data);
209 fp->f_data = 0;
210 return (error);
211}
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