2 * Copyright (c) 1982, 1986, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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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
33 * @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/kern/sys_socket.c,v 1.28.2.2 2001/02/26 04:23:16 jlemon Exp $
37 #include <sys/param.h>
38 #include <sys/systm.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>
47 #include <sys/filedesc.h>
48 #include <sys/ucred.h>
51 #include <net/route.h>
53 struct fileops socketops = {
54 soo_read, soo_write, soo_ioctl, soo_poll, sokqfilter,
60 soo_read(fp, uio, cred, flags, p)
67 struct socket *so = (struct socket *)fp->f_data;
68 return so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0);
73 soo_write(fp, uio, cred, flags, p)
80 struct socket *so = (struct socket *)fp->f_data;
81 return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0,
86 soo_ioctl(fp, cmd, data, p)
89 register caddr_t data;
92 register struct socket *so = (struct socket *)fp->f_data;
98 so->so_state |= SS_NBIO;
100 so->so_state &= ~SS_NBIO;
105 so->so_state |= SS_ASYNC;
106 so->so_rcv.sb_flags |= SB_ASYNC;
107 so->so_snd.sb_flags |= SB_ASYNC;
109 so->so_state &= ~SS_ASYNC;
110 so->so_rcv.sb_flags &= ~SB_ASYNC;
111 so->so_snd.sb_flags &= ~SB_ASYNC;
116 *(int *)data = so->so_rcv.sb_cc;
120 return (fsetown(*(int *)data, &so->so_sigio));
123 *(int *)data = fgetown(so->so_sigio);
127 return (fsetown(-(*(int *)data), &so->so_sigio));
130 *(int *)data = -fgetown(so->so_sigio);
134 *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
138 * Interface/routing/protocol specific ioctls:
139 * interface and routing ioctls should have a
140 * different entry since a socket's unnecessary
142 if (IOCGROUP(cmd) == 'i')
143 return (ifioctl(so, cmd, data, p));
144 if (IOCGROUP(cmd) == 'r')
145 return (rtioctl(cmd, data, p));
146 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p));
150 soo_poll(fp, events, cred, p)
156 struct socket *so = (struct socket *)fp->f_data;
157 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, p);
166 struct socket *so = (struct socket *)fp->f_data;
168 bzero((caddr_t)ub, sizeof (*ub));
169 ub->st_mode = S_IFSOCK;
171 * If SS_CANTRCVMORE is set, but there's still data left in the
172 * receive buffer, the socket is still readable.
174 if ((so->so_state & SS_CANTRCVMORE) == 0 ||
175 so->so_rcv.sb_cc != 0)
176 ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
177 if ((so->so_state & SS_CANTSENDMORE) == 0)
178 ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
179 ub->st_size = so->so_rcv.sb_cc;
180 ub->st_uid = so->so_cred->cr_uid;
181 ub->st_gid = so->so_cred->cr_gid;
182 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub));
193 fp->f_ops = &badfileops;
195 error = soclose((struct socket *)fp->f_data);