1 /* $NetBSD: linux_socketcall.c,v 1.27 2004/09/05 09:09:02 jdolecek Exp $ */
2
3 /*-
4 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Frank van der Linden and Eric Haszlakiewicz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: linux_socketcall.c,v 1.27 2004/09/05 09:09:02 jdolecek Exp $");
41
42 #include <sys/param.h>
43 #include <sys/kernel.h>
44 #include <sys/systm.h>
45 #include <sys/buf.h>
46 #include <sys/malloc.h>
47 #include <sys/ioctl.h>
48 #include <sys/tty.h>
49 #include <sys/file.h>
50 #include <sys/filedesc.h>
51 #include <sys/select.h>
52 #include <sys/socket.h>
53 #include <sys/socketvar.h>
54 #include <net/if.h>
55 #include <netinet/in.h>
56 #include <netinet/tcp.h>
57 #include <sys/mount.h>
58 #include <sys/proc.h>
59 #include <sys/vnode.h>
60 #include <sys/device.h>
61
62 #include <sys/sa.h>
63 #include <sys/syscallargs.h>
64
65 #include <compat/linux/common/linux_types.h>
66 #include <compat/linux/common/linux_util.h>
67 #include <compat/linux/common/linux_signal.h>
68 #include <compat/linux/common/linux_ioctl.h>
69 #include <compat/linux/common/linux_socket.h>
70 #include <compat/linux/common/linux_socketcall.h>
71 #include <compat/linux/common/linux_sockio.h>
72
73 #include <compat/linux/linux_syscallargs.h>
74
75 #undef DPRINTF
76 #ifdef DEBUG_LINUX
77 #define DPRINTF(a) uprintf a
78 #else
79 #define DPRINTF(a)
80 #endif
81
82 /* Used on: arm, i386, m68k, mips, ppc, sparc, sparc64 */
83 /* Not used on: alpha */
84
85 /*
86 * This file contains the linux_socketcall() multiplexer. Arguments
87 * for the various socket calls are on the user stack. A pointer
88 * to them is the only thing that is passed. We copyin the arguments
89 * here so the individual functions can assume they are normal syscalls.
90 */
91
92 /* The sizes of the arguments. Used for copyin. */
93 static const struct {
94 char *name;
95 int argsize;
96 } linux_socketcall[LINUX_MAX_SOCKETCALL+1] = {
97 {"invalid", -1}, /* 0 */
98 {"socket", sizeof(struct linux_sys_socket_args)}, /* 1 */
99 {"bind", sizeof(struct linux_sys_bind_args)}, /* 2 */
100 {"connect", sizeof(struct linux_sys_connect_args)}, /* 3 */
101 {"listen", sizeof(struct linux_sys_listen_args)}, /* 4 */
102 {"accept", sizeof(struct linux_sys_accept_args)}, /* 5 */
103 {"getsockname", sizeof(struct linux_sys_getsockname_args)}, /* 6 */
104 {"getpeername", sizeof(struct linux_sys_getpeername_args)}, /* 7 */
105 {"socketpair", sizeof(struct linux_sys_socketpair_args)}, /* 8 */
106 {"send", sizeof(struct linux_sys_send_args)}, /* 9 */
107 {"recv", sizeof(struct linux_sys_recv_args)}, /* 10 */
108 {"sendto", sizeof(struct linux_sys_sendto_args)}, /* 11 */
109 {"recvfrom", sizeof(struct linux_sys_recvfrom_args)}, /* 12 */
110 {"shutdown", sizeof(struct linux_sys_shutdown_args)}, /* 13 */
111 {"setsockopt", sizeof(struct linux_sys_setsockopt_args)}, /* 14 */
112 {"getsockopt", sizeof(struct linux_sys_getsockopt_args)}, /* 15 */
113 {"sendmsg", sizeof(struct linux_sys_sendmsg_args)}, /* 16 */
114 {"recvmsg", sizeof(struct linux_sys_recvmsg_args)}, /* 17 */
115 };
116
117 /*
118 * Entry point to all Linux socket calls. Just check which call to
119 * make and take appropriate action.
120 */
121 int
122 linux_sys_socketcall(l, v, retval)
123 struct lwp *l;
124 void *v;
125 register_t *retval;
126 {
127 struct linux_sys_socketcall_args /* {
128 syscallarg(int) what;
129 syscallarg(void *) args;
130 } */ *uap = v;
131 struct linux_socketcall_dummy_args lda;
132 int error;
133
134 if (SCARG(uap, what) < 0 || SCARG(uap, what) > LINUX_MAX_SOCKETCALL)
135 return ENOSYS;
136
137 if ((error = copyin((caddr_t) SCARG(uap, args), (caddr_t) &lda,
138 linux_socketcall[SCARG(uap, what)].argsize))) {
139 DPRINTF(("copyin for %s failed %d\n",
140 linux_socketcall[SCARG(uap, what)].name, error));
141 return error;
142 }
143
144 #ifdef DEBUG_LINUX
145 /* dump the passed argument data */
146 {
147 DPRINTF(("linux_socketcall('%s'): ",
148 linux_socketcall[SCARG(uap, what)].name));
149
150 if (SCARG(uap, what) == LINUX_SYS_socket) {
151 DPRINTF(("[dom %d type %d proto %d]\n",
152 lda.dummy_ints[0],
153 lda.dummy_ints[1],
154 lda.dummy_ints[2]));
155 } else {
156 int i, sz;
157 u_int8_t *data = (u_int8_t *)&lda.dummy_ints[1];
158
159 sz = linux_socketcall[SCARG(uap, what)].argsize
160 - sizeof(lda.dummy_ints[0]);
161
162 DPRINTF(("socket %d [", lda.dummy_ints[0]));
163 for(i=0; i < sz; i++)
164 DPRINTF(("%02x ", data[i]));
165 DPRINTF(("]\n"));
166 }
167 }
168 #endif
169
170 switch (SCARG(uap, what)) {
171 case LINUX_SYS_socket:
172 error = linux_sys_socket(l, (void *)&lda, retval);
173 break;
174 case LINUX_SYS_bind:
175 error = linux_sys_bind(l, (void *)&lda, retval);
176 break;
177 case LINUX_SYS_connect:
178 error = linux_sys_connect(l, (void *)&lda, retval);
179 break;
180 case LINUX_SYS_listen:
181 error = sys_listen(l, (void *)&lda, retval);
182 break;
183 case LINUX_SYS_accept:
184 error = linux_sys_accept(l, (void *)&lda, retval);
185 break;
186 case LINUX_SYS_getsockname:
187 error = linux_sys_getsockname(l, (void *)&lda, retval);
188 break;
189 case LINUX_SYS_getpeername:
190 error = linux_sys_getpeername(l, (void *)&lda, retval);
191 break;
192 case LINUX_SYS_socketpair:
193 error = linux_sys_socketpair(l, (void *)&lda, retval);
194 break;
195 case LINUX_SYS_send:
196 error = linux_sys_send(l, (void *)&lda, retval);
197 break;
198 case LINUX_SYS_recv:
199 error = linux_sys_recv(l, (void *)&lda, retval);
200 break;
201 case LINUX_SYS_sendto:
202 error = linux_sys_sendto(l, (void *)&lda, retval);
203 break;
204 case LINUX_SYS_recvfrom:
205 error = linux_sys_recvfrom(l, (void *)&lda, retval);
206 break;
207 case LINUX_SYS_shutdown:
208 error = sys_shutdown(l, (void *)&lda, retval);
209 break;
210 case LINUX_SYS_setsockopt:
211 error = linux_sys_setsockopt(l, (void *)&lda, retval);
212 break;
213 case LINUX_SYS_getsockopt:
214 error = linux_sys_getsockopt(l, (void *)&lda, retval);
215 break;
216 case LINUX_SYS_sendmsg:
217 error = linux_sys_sendmsg(l, (void *)&lda, retval);
218 break;
219 case LINUX_SYS_recvmsg:
220 error = linux_sys_recvmsg(l, (void *)&lda, retval);
221 break;
222 default:
223 error = ENOSYS;
224 break;
225 }
226
227 DPRINTF(("sys_%s() = %d\n", linux_socketcall[SCARG(uap, what)].name,
228 error));
229 return error;
230 }
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