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
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
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 $
35 * $DragonFly: src/sys/kern/sys_socket.c,v 1.9 2006/05/06 02:43:12 dillon Exp $
38 #include <sys/param.h>
39 #include <sys/systm.h>
41 #include <sys/protosw.h>
42 #include <sys/socket.h>
43 #include <sys/socketvar.h>
44 #include <sys/socketops.h>
45 #include <sys/filio.h> /* XXX */
46 #include <sys/sockio.h>
49 #include <sys/filedesc.h>
50 #include <sys/ucred.h>
53 #include <net/route.h>
55 struct fileops socketops = {
58 soo_read, soo_write, soo_ioctl, soo_poll, sokqfilter,
59 soo_stat, soo_close, soo_shutdown
64 soo_read(struct file *fp, struct uio *uio, struct ucred *cred, int flags)
66 struct socket *so = (struct socket *)fp->f_data;
68 return (so_pru_soreceive(so, NULL, uio, NULL, NULL, NULL));
73 soo_write(struct file *fp, struct uio *uio, struct ucred *cred, int flags)
75 struct socket *so = (struct socket *)fp->f_data;
77 return (so_pru_sosend(so, NULL, uio, NULL, NULL, 0, uio->uio_td));
81 soo_ioctl(struct file *fp, u_long cmd, caddr_t data, struct ucred *cred)
83 struct socket *so = (struct socket *)fp->f_data;
89 so->so_state |= SS_NBIO;
91 so->so_state &= ~SS_NBIO;
96 so->so_state |= SS_ASYNC;
97 so->so_rcv.sb_flags |= SB_ASYNC;
98 so->so_snd.sb_flags |= SB_ASYNC;
100 so->so_state &= ~SS_ASYNC;
101 so->so_rcv.sb_flags &= ~SB_ASYNC;
102 so->so_snd.sb_flags &= ~SB_ASYNC;
107 *(int *)data = so->so_rcv.sb_cc;
111 return (fsetown(*(int *)data, &so->so_sigio));
114 *(int *)data = fgetown(so->so_sigio);
118 return (fsetown(-(*(int *)data), &so->so_sigio));
121 *(int *)data = -fgetown(so->so_sigio);
125 *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
129 * Interface/routing/protocol specific ioctls:
130 * interface and routing ioctls should have a
131 * different entry since a socket's unnecessary
133 if (IOCGROUP(cmd) == 'i')
134 return (ifioctl(so, cmd, data, cred));
135 if (IOCGROUP(cmd) == 'r')
136 return (rtioctl(cmd, data, cred));
137 return (so_pru_control(so, cmd, data, NULL));
141 soo_poll(struct file *fp, int events, struct ucred *cred)
143 struct socket *so = (struct socket *)fp->f_data;
144 return (so_pru_sopoll(so, events, cred));
148 soo_stat(struct file *fp, struct stat *ub, struct ucred *cred)
150 struct socket *so = (struct socket *)fp->f_data;
152 bzero((caddr_t)ub, sizeof (*ub));
153 ub->st_mode = S_IFSOCK;
155 * If SS_CANTRCVMORE is set, but there's still data left in the
156 * receive buffer, the socket is still readable.
158 if ((so->so_state & SS_CANTRCVMORE) == 0 ||
159 so->so_rcv.sb_cc != 0)
160 ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
161 if ((so->so_state & SS_CANTSENDMORE) == 0)
162 ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
163 ub->st_size = so->so_rcv.sb_cc;
164 ub->st_uid = so->so_cred->cr_uid;
165 ub->st_gid = so->so_cred->cr_gid;
166 return (so_pru_sense(so, ub));
171 soo_close(struct file *fp)
175 fp->f_ops = &badfileops;
177 error = soclose((struct socket *)fp->f_data);
184 soo_shutdown(struct file *fp, int how)
189 error = soshutdown((struct socket *)fp->f_data, how);