linux_socketcall.c revision 1.34
1 /* $NetBSD: linux_socketcall.c,v 1.34 2007/06/02 13:16:19 yamt 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 1.34 2007/06/02 13:16:19 yamt Exp $"); 41 42 #if defined(_KERNEL_OPT) 43 #include "opt_ktrace.h" 44 #endif /* defined(_KERNEL_OPT) */ 45 46 #include <sys/param.h> 47 #include <sys/kernel.h> 48 #include <sys/systm.h> 49 #include <sys/buf.h> 50 #include <sys/malloc.h> 51 #include <sys/ioctl.h> 52 #include <sys/tty.h> 53 #include <sys/file.h> 54 #include <sys/filedesc.h> 55 #include <sys/select.h> 56 #include <sys/socket.h> 57 #include <sys/socketvar.h> 58 #include <net/if.h> 59 #include <netinet/in.h> 60 #include <netinet/tcp.h> 61 #include <sys/mount.h> 62 #include <sys/proc.h> 63 #include <sys/vnode.h> 64 #include <sys/device.h> 65 #ifdef KTRACE 66 #include <sys/ktrace.h> 67 #endif 68 69 #include <sys/syscallargs.h> 70 71 #include <compat/linux/common/linux_types.h> 72 #include <compat/linux/common/linux_util.h> 73 #include <compat/linux/common/linux_signal.h> 74 #include <compat/linux/common/linux_ioctl.h> 75 #include <compat/linux/common/linux_socket.h> 76 #include <compat/linux/common/linux_socketcall.h> 77 #include <compat/linux/common/linux_sockio.h> 78 79 #include <compat/linux/linux_syscallargs.h> 80 81 #undef DPRINTF 82 #ifdef DEBUG_LINUX 83 #define DPRINTF(a) uprintf a 84 #else 85 #define DPRINTF(a) 86 #endif 87 88 /* Used on: arm, i386, m68k, mips, ppc, sparc, sparc64 */ 89 /* Not used on: alpha, amd64 */ 90 91 /* 92 * This file contains the linux_socketcall() multiplexer. Arguments 93 * for the various socket calls are on the user stack. A pointer 94 * to them is the only thing that is passed. We copyin the arguments 95 * here so the individual functions can assume they are normal syscalls. 96 */ 97 98 /* The sizes of the arguments. Used for copyin. */ 99 static const struct { 100 const char *name; 101 int argsize; 102 } linux_socketcall[LINUX_MAX_SOCKETCALL+1] = { 103 {"invalid", -1}, /* 0 */ 104 {"socket", sizeof(struct linux_sys_socket_args)}, /* 1 */ 105 {"bind", sizeof(struct linux_sys_bind_args)}, /* 2 */ 106 {"connect", sizeof(struct linux_sys_connect_args)}, /* 3 */ 107 {"listen", sizeof(struct linux_sys_listen_args)}, /* 4 */ 108 {"accept", sizeof(struct linux_sys_accept_args)}, /* 5 */ 109 {"getsockname", sizeof(struct linux_sys_getsockname_args)}, /* 6 */ 110 {"getpeername", sizeof(struct linux_sys_getpeername_args)}, /* 7 */ 111 {"socketpair", sizeof(struct linux_sys_socketpair_args)}, /* 8 */ 112 {"send", sizeof(struct linux_sys_send_args)}, /* 9 */ 113 {"recv", sizeof(struct linux_sys_recv_args)}, /* 10 */ 114 {"sendto", sizeof(struct linux_sys_sendto_args)}, /* 11 */ 115 {"recvfrom", sizeof(struct linux_sys_recvfrom_args)}, /* 12 */ 116 {"shutdown", sizeof(struct linux_sys_shutdown_args)}, /* 13 */ 117 {"setsockopt", sizeof(struct linux_sys_setsockopt_args)}, /* 14 */ 118 {"getsockopt", sizeof(struct linux_sys_getsockopt_args)}, /* 15 */ 119 {"sendmsg", sizeof(struct linux_sys_sendmsg_args)}, /* 16 */ 120 {"recvmsg", sizeof(struct linux_sys_recvmsg_args)}, /* 17 */ 121 }; 122 123 /* 124 * Entry point to all Linux socket calls. Just check which call to 125 * make and take appropriate action. 126 */ 127 int 128 linux_sys_socketcall(l, v, retval) 129 struct lwp *l; 130 void *v; 131 register_t *retval; 132 { 133 struct linux_sys_socketcall_args /* { 134 syscallarg(int) what; 135 syscallarg(void *) args; 136 } */ *uap = v; 137 struct linux_socketcall_dummy_args lda; 138 int error; 139 140 if (SCARG(uap, what) < 0 || SCARG(uap, what) > LINUX_MAX_SOCKETCALL) 141 return ENOSYS; 142 143 if ((error = copyin(SCARG(uap, args), &lda, 144 linux_socketcall[SCARG(uap, what)].argsize))) { 145 DPRINTF(("copyin for %s failed %d\n", 146 linux_socketcall[SCARG(uap, what)].name, error)); 147 return error; 148 } 149 150 #ifdef KTRACE 151 if (KTRPOINT(l->l_proc, KTR_USER)) 152 ktrkuser(l, linux_socketcall[SCARG(uap, what)].name, 153 &lda, linux_socketcall[SCARG(uap, what)].argsize); 154 #endif 155 156 157 #ifdef DEBUG_LINUX 158 /* dump the passed argument data */ 159 { 160 DPRINTF(("linux_socketcall('%s'): ", 161 linux_socketcall[SCARG(uap, what)].name)); 162 163 if (SCARG(uap, what) == LINUX_SYS_socket) { 164 DPRINTF(("[dom %d type %d proto %d]\n", 165 lda.dummy_ints[0], 166 lda.dummy_ints[1], 167 lda.dummy_ints[2])); 168 } else { 169 int i, sz; 170 u_int8_t *data = (u_int8_t *)&lda.dummy_ints[1]; 171 172 sz = linux_socketcall[SCARG(uap, what)].argsize 173 - sizeof(lda.dummy_ints[0]); 174 175 DPRINTF(("socket %d [", lda.dummy_ints[0])); 176 for(i=0; i < sz; i++) 177 DPRINTF(("%02x ", data[i])); 178 DPRINTF(("]\n")); 179 } 180 } 181 #endif 182 183 switch (SCARG(uap, what)) { 184 case LINUX_SYS_socket: 185 error = linux_sys_socket(l, (void *)&lda, retval); 186 break; 187 case LINUX_SYS_bind: 188 error = linux_sys_bind(l, (void *)&lda, retval); 189 break; 190 case LINUX_SYS_connect: 191 error = linux_sys_connect(l, (void *)&lda, retval); 192 break; 193 case LINUX_SYS_listen: 194 error = sys_listen(l, (void *)&lda, retval); 195 break; 196 case LINUX_SYS_accept: 197 error = linux_sys_accept(l, (void *)&lda, retval); 198 break; 199 case LINUX_SYS_getsockname: 200 error = linux_sys_getsockname(l, (void *)&lda, retval); 201 break; 202 case LINUX_SYS_getpeername: 203 error = linux_sys_getpeername(l, (void *)&lda, retval); 204 break; 205 case LINUX_SYS_socketpair: 206 error = linux_sys_socketpair(l, (void *)&lda, retval); 207 break; 208 case LINUX_SYS_send: 209 error = linux_sys_send(l, (void *)&lda, retval); 210 break; 211 case LINUX_SYS_recv: 212 error = linux_sys_recv(l, (void *)&lda, retval); 213 break; 214 case LINUX_SYS_sendto: 215 error = linux_sys_sendto(l, (void *)&lda, retval); 216 break; 217 case LINUX_SYS_recvfrom: 218 error = linux_sys_recvfrom(l, (void *)&lda, retval); 219 break; 220 case LINUX_SYS_shutdown: 221 error = sys_shutdown(l, (void *)&lda, retval); 222 break; 223 case LINUX_SYS_setsockopt: 224 error = linux_sys_setsockopt(l, (void *)&lda, retval); 225 break; 226 case LINUX_SYS_getsockopt: 227 error = linux_sys_getsockopt(l, (void *)&lda, retval); 228 break; 229 case LINUX_SYS_sendmsg: 230 error = linux_sys_sendmsg(l, (void *)&lda, retval); 231 break; 232 case LINUX_SYS_recvmsg: 233 error = linux_sys_recvmsg(l, (void *)&lda, retval); 234 break; 235 default: 236 error = ENOSYS; 237 break; 238 } 239 240 DPRINTF(("sys_%s() = %d\n", linux_socketcall[SCARG(uap, what)].name, 241 error)); 242 return error; 243 } 244
Indexes created Mon Sep 22 05:09:51 GMT 2025