proc->thread stage 4: rework the VFS and DEVICE subsystems to take thread
[dragonfly.git] / sys / kern / sys_socket.c
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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 * $FreeBSD: src/sys/kern/sys_socket.c,v 1.28.2.2 2001/02/26 04:23:16 jlemon Exp $
dadab5e9 35 * $DragonFly: src/sys/kern/sys_socket.c,v 1.3 2003/06/25 03:55:57 dillon Exp $
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36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/file.h>
41#include <sys/protosw.h>
42#include <sys/socket.h>
43#include <sys/socketvar.h>
44#include <sys/filio.h> /* XXX */
45#include <sys/sockio.h>
46#include <sys/stat.h>
47#include <sys/uio.h>
48#include <sys/filedesc.h>
49#include <sys/ucred.h>
50
51#include <net/if.h>
52#include <net/route.h>
53
54struct fileops socketops = {
55 soo_read, soo_write, soo_ioctl, soo_poll, sokqfilter,
56 soo_stat, soo_close
57};
58
59/* ARGSUSED */
60int
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61soo_read(
62 struct file *fp,
63 struct uio *uio,
64 struct ucred *cred,
65 int flags,
66 struct thread *td
67) {
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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 */
73int
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74soo_write(
75 struct file *fp,
76 struct uio *uio,
77 struct ucred *cred,
78 int flags,
79 struct thread *td
80) {
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81 struct socket *so = (struct socket *)fp->f_data;
82 return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0,
dadab5e9 83 uio->uio_td);
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84}
85
86int
dadab5e9 87soo_ioctl(struct file *fp, u_long cmd, caddr_t data, struct thread *td)
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88{
89 register struct socket *so = (struct socket *)fp->f_data;
90
91 switch (cmd) {
92
93 case FIONBIO:
94 if (*(int *)data)
95 so->so_state |= SS_NBIO;
96 else
97 so->so_state &= ~SS_NBIO;
98 return (0);
99
100 case FIOASYNC:
101 if (*(int *)data) {
102 so->so_state |= SS_ASYNC;
103 so->so_rcv.sb_flags |= SB_ASYNC;
104 so->so_snd.sb_flags |= SB_ASYNC;
105 } else {
106 so->so_state &= ~SS_ASYNC;
107 so->so_rcv.sb_flags &= ~SB_ASYNC;
108 so->so_snd.sb_flags &= ~SB_ASYNC;
109 }
110 return (0);
111
112 case FIONREAD:
113 *(int *)data = so->so_rcv.sb_cc;
114 return (0);
115
116 case FIOSETOWN:
117 return (fsetown(*(int *)data, &so->so_sigio));
118
119 case FIOGETOWN:
120 *(int *)data = fgetown(so->so_sigio);
121 return (0);
122
123 case SIOCSPGRP:
124 return (fsetown(-(*(int *)data), &so->so_sigio));
125
126 case SIOCGPGRP:
127 *(int *)data = -fgetown(so->so_sigio);
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')
dadab5e9 140 return (ifioctl(so, cmd, data, td));
984263bc 141 if (IOCGROUP(cmd) == 'r')
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142 return (rtioctl(cmd, data, td));
143 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, td));
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144}
145
146int
dadab5e9 147soo_poll(struct file *fp, int events, struct ucred *cred, struct thread *td)
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148{
149 struct socket *so = (struct socket *)fp->f_data;
dadab5e9 150 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, td);
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151}
152
153int
dadab5e9 154soo_stat(struct file *fp, struct stat *ub, struct thread *td)
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155{
156 struct socket *so = (struct socket *)fp->f_data;
157
158 bzero((caddr_t)ub, sizeof (*ub));
159 ub->st_mode = S_IFSOCK;
160 /*
161 * If SS_CANTRCVMORE is set, but there's still data left in the
162 * receive buffer, the socket is still readable.
163 */
164 if ((so->so_state & SS_CANTRCVMORE) == 0 ||
165 so->so_rcv.sb_cc != 0)
166 ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
167 if ((so->so_state & SS_CANTSENDMORE) == 0)
168 ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
169 ub->st_size = so->so_rcv.sb_cc;
170 ub->st_uid = so->so_cred->cr_uid;
171 ub->st_gid = so->so_cred->cr_gid;
172 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub));
173}
174
175/* ARGSUSED */
176int
dadab5e9 177soo_close(struct file *fp, struct thread *td)
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178{
179 int error = 0;
180
181 fp->f_ops = &badfileops;
182 if (fp->f_data)
183 error = soclose((struct socket *)fp->f_data);
184 fp->f_data = 0;
185 return (error);
186}