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b688fc87 WJ |
1 | /* |
2 | * Copyright (c) 1982, 1986, 1990 Regents of the University of California. | |
3 | * 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 7.11 (Berkeley) 4/16/91 | |
34 | */ | |
35 | ||
36 | #include "param.h" | |
37 | #include "systm.h" | |
38 | #include "file.h" | |
39 | #include "mbuf.h" | |
40 | #include "protosw.h" | |
41 | #include "socket.h" | |
42 | #include "socketvar.h" | |
43 | #include "ioctl.h" | |
44 | #include "stat.h" | |
45 | ||
46 | #include "net/if.h" | |
47 | #include "net/route.h" | |
48 | ||
49 | struct fileops socketops = | |
50 | { soo_read, soo_write, soo_ioctl, soo_select, soo_close }; | |
51 | ||
52 | /* ARGSUSED */ | |
53 | soo_read(fp, uio, cred) | |
54 | struct file *fp; | |
55 | struct uio *uio; | |
56 | struct ucred *cred; | |
57 | { | |
58 | ||
59 | return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0, | |
60 | uio, (struct mbuf **)0, (struct mbuf **)0, (int *)0)); | |
61 | } | |
62 | ||
63 | /* ARGSUSED */ | |
64 | soo_write(fp, uio, cred) | |
65 | struct file *fp; | |
66 | struct uio *uio; | |
67 | struct ucred *cred; | |
68 | { | |
69 | ||
70 | return (sosend((struct socket *)fp->f_data, (struct mbuf *)0, | |
71 | uio, (struct mbuf *)0, (struct mbuf *)0, 0)); | |
72 | } | |
73 | ||
74 | soo_ioctl(fp, cmd, data, p) | |
75 | struct file *fp; | |
76 | int cmd; | |
77 | register caddr_t data; | |
78 | struct proc *p; | |
79 | { | |
80 | register struct socket *so = (struct socket *)fp->f_data; | |
81 | ||
82 | switch (cmd) { | |
83 | ||
84 | case FIONBIO: | |
85 | if (*(int *)data) | |
86 | so->so_state |= SS_NBIO; | |
87 | else | |
88 | so->so_state &= ~SS_NBIO; | |
89 | return (0); | |
90 | ||
91 | case FIOASYNC: | |
92 | if (*(int *)data) { | |
93 | so->so_state |= SS_ASYNC; | |
94 | so->so_rcv.sb_flags |= SB_ASYNC; | |
95 | so->so_snd.sb_flags |= SB_ASYNC; | |
96 | } else { | |
97 | so->so_state &= ~SS_ASYNC; | |
98 | so->so_rcv.sb_flags &= ~SB_ASYNC; | |
99 | so->so_snd.sb_flags &= ~SB_ASYNC; | |
100 | } | |
101 | return (0); | |
102 | ||
103 | case FIONREAD: | |
104 | *(int *)data = so->so_rcv.sb_cc; | |
105 | return (0); | |
106 | ||
107 | case SIOCSPGRP: | |
108 | so->so_pgid = *(int *)data; | |
109 | return (0); | |
110 | ||
111 | case SIOCGPGRP: | |
112 | *(int *)data = so->so_pgid; | |
113 | return (0); | |
114 | ||
115 | case SIOCATMARK: | |
116 | *(int *)data = (so->so_state&SS_RCVATMARK) != 0; | |
117 | return (0); | |
118 | } | |
119 | /* | |
120 | * Interface/routing/protocol specific ioctls: | |
121 | * interface and routing ioctls should have a | |
122 | * different entry since a socket's unnecessary | |
123 | */ | |
124 | if (IOCGROUP(cmd) == 'i') | |
125 | return (ifioctl(so, cmd, data, p)); | |
126 | if (IOCGROUP(cmd) == 'r') | |
127 | return (rtioctl(cmd, data, p)); | |
128 | return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, | |
129 | (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0)); | |
130 | } | |
131 | ||
132 | soo_select(fp, which, p) | |
133 | struct file *fp; | |
134 | int which; | |
135 | struct proc *p; | |
136 | { | |
137 | register struct socket *so = (struct socket *)fp->f_data; | |
138 | register int s = splnet(); | |
139 | ||
140 | switch (which) { | |
141 | ||
142 | case FREAD: | |
143 | if (soreadable(so)) { | |
144 | splx(s); | |
145 | return (1); | |
146 | } | |
147 | sbselqueue(&so->so_rcv, p); | |
148 | break; | |
149 | ||
150 | case FWRITE: | |
151 | if (sowriteable(so)) { | |
152 | splx(s); | |
153 | return (1); | |
154 | } | |
155 | sbselqueue(&so->so_snd, p); | |
156 | break; | |
157 | ||
158 | case 0: | |
159 | if (so->so_oobmark || | |
160 | (so->so_state & SS_RCVATMARK)) { | |
161 | splx(s); | |
162 | return (1); | |
163 | } | |
164 | sbselqueue(&so->so_rcv, p); | |
165 | break; | |
166 | } | |
167 | splx(s); | |
168 | return (0); | |
169 | } | |
170 | ||
171 | soo_stat(so, ub) | |
172 | register struct socket *so; | |
173 | register struct stat *ub; | |
174 | { | |
175 | ||
176 | bzero((caddr_t)ub, sizeof (*ub)); | |
177 | return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE, | |
178 | (struct mbuf *)ub, (struct mbuf *)0, | |
179 | (struct mbuf *)0)); | |
180 | } | |
181 | ||
182 | /* ARGSUSED */ | |
183 | soo_close(fp, p) | |
184 | struct file *fp; | |
185 | struct proc *p; | |
186 | { | |
187 | int error = 0; | |
188 | ||
189 | if (fp->f_data) | |
190 | error = soclose((struct socket *)fp->f_data); | |
191 | fp->f_data = 0; | |
192 | return (error); | |
193 | } |