linux_socketcall.c revision 1.38.2.1
1 /* $NetBSD: linux_socketcall.c,v 1.38.2.1 2008/05/10 23:48:56 wrstuden 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: linux_socketcall.c,v 1.38.2.1 2008/05/10 23:48:56 wrstuden Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/kernel.h> 37 #include <sys/systm.h> 38 #include <sys/buf.h> 39 #include <sys/malloc.h> 40 #include <sys/ioctl.h> 41 #include <sys/tty.h> 42 #include <sys/file.h> 43 #include <sys/filedesc.h> 44 #include <sys/select.h> 45 #include <sys/socket.h> 46 #include <sys/socketvar.h> 47 #include <net/if.h> 48 #include <netinet/in.h> 49 #include <netinet/tcp.h> 50 #include <sys/mount.h> 51 #include <sys/proc.h> 52 #include <sys/vnode.h> 53 #include <sys/device.h> 54 #include <sys/ktrace.h> 55 56 #include <sys/sa.h> 57 #include <sys/syscallargs.h> 58 59 #include <compat/linux/common/linux_types.h> 60 #include <compat/linux/common/linux_util.h> 61 #include <compat/linux/common/linux_signal.h> 62 #include <compat/linux/common/linux_ioctl.h> 63 #include <compat/linux/common/linux_socket.h> 64 #include <compat/linux/common/linux_socketcall.h> 65 #include <compat/linux/common/linux_sockio.h> 66 67 #include <compat/linux/linux_syscallargs.h> 68 69 #undef DPRINTF 70 #ifdef DEBUG_LINUX 71 #define DPRINTF(a) uprintf a 72 #else 73 #define DPRINTF(a) 74 #endif 75 76 /* Used on: arm, i386, m68k, mips, ppc, sparc, sparc64 */ 77 /* Not used on: alpha, amd64 */ 78 79 /* 80 * This file contains the linux_socketcall() multiplexer. Arguments 81 * for the various socket calls are on the user stack. A pointer 82 * to them is the only thing that is passed. We copyin the arguments 83 * here so the individual functions can assume they are normal syscalls. 84 */ 85 86 /* The sizes of the arguments. Used for copyin. */ 87 static const struct { 88 const char *name; 89 int argsize; 90 } linux_socketcall[LINUX_MAX_SOCKETCALL+1] = { 91 {"invalid", -1}, /* 0 */ 92 {"socket", sizeof(struct linux_sys_socket_args)}, /* 1 */ 93 {"bind", sizeof(struct linux_sys_bind_args)}, /* 2 */ 94 {"connect", sizeof(struct linux_sys_connect_args)}, /* 3 */ 95 {"listen", sizeof(struct linux_sys_listen_args)}, /* 4 */ 96 {"accept", sizeof(struct linux_sys_accept_args)}, /* 5 */ 97 {"getsockname", sizeof(struct linux_sys_getsockname_args)}, /* 6 */ 98 {"getpeername", sizeof(struct linux_sys_getpeername_args)}, /* 7 */ 99 {"socketpair", sizeof(struct linux_sys_socketpair_args)}, /* 8 */ 100 {"send", sizeof(struct linux_sys_send_args)}, /* 9 */ 101 {"recv", sizeof(struct linux_sys_recv_args)}, /* 10 */ 102 {"sendto", sizeof(struct linux_sys_sendto_args)}, /* 11 */ 103 {"recvfrom", sizeof(struct linux_sys_recvfrom_args)}, /* 12 */ 104 {"shutdown", sizeof(struct linux_sys_shutdown_args)}, /* 13 */ 105 {"setsockopt", sizeof(struct linux_sys_setsockopt_args)}, /* 14 */ 106 {"getsockopt", sizeof(struct linux_sys_getsockopt_args)}, /* 15 */ 107 {"sendmsg", sizeof(struct linux_sys_sendmsg_args)}, /* 16 */ 108 {"recvmsg", sizeof(struct linux_sys_recvmsg_args)}, /* 17 */ 109 }; 110 111 /* 112 * Entry point to all Linux socket calls. Just check which call to 113 * make and take appropriate action. 114 */ 115 int 116 linux_sys_socketcall(struct lwp *l, const struct linux_sys_socketcall_args *uap, register_t *retval) 117 { 118 /* { 119 syscallarg(int) what; 120 syscallarg(void *) args; 121 } */ 122 struct linux_socketcall_dummy_args lda; 123 int error; 124 125 if (SCARG(uap, what) < 0 || SCARG(uap, what) > LINUX_MAX_SOCKETCALL) 126 return ENOSYS; 127 128 if ((error = copyin(SCARG(uap, args), &lda, 129 linux_socketcall[SCARG(uap, what)].argsize))) { 130 DPRINTF(("copyin for %s failed %d\n", 131 linux_socketcall[SCARG(uap, what)].name, error)); 132 return error; 133 } 134 135 ktrkuser(linux_socketcall[SCARG(uap, what)].name, &lda, 136 linux_socketcall[SCARG(uap, what)].argsize); 137 138 #ifdef DEBUG_LINUX 139 /* dump the passed argument data */ 140 { 141 DPRINTF(("linux_socketcall('%s'): ", 142 linux_socketcall[SCARG(uap, what)].name)); 143 144 if (SCARG(uap, what) == LINUX_SYS_socket) { 145 DPRINTF(("[dom %d type %d proto %d]\n", 146 lda.dummy_ints[0], 147 lda.dummy_ints[1], 148 lda.dummy_ints[2])); 149 } else { 150 int i, sz; 151 u_int8_t *data = (u_int8_t *)&lda.dummy_ints[1]; 152 153 sz = linux_socketcall[SCARG(uap, what)].argsize 154 - sizeof(lda.dummy_ints[0]); 155 156 DPRINTF(("socket %d [", lda.dummy_ints[0])); 157 for(i=0; i < sz; i++) 158 DPRINTF(("%02x ", data[i])); 159 DPRINTF(("]\n")); 160 } 161 } 162 #endif 163 164 switch (SCARG(uap, what)) { 165 case LINUX_SYS_socket: 166 error = linux_sys_socket(l, (void *)&lda, retval); 167 break; 168 case LINUX_SYS_bind: 169 error = linux_sys_bind(l, (void *)&lda, retval); 170 break; 171 case LINUX_SYS_connect: 172 error = linux_sys_connect(l, (void *)&lda, retval); 173 break; 174 case LINUX_SYS_listen: 175 error = sys_listen(l, (void *)&lda, retval); 176 break; 177 case LINUX_SYS_accept: 178 error = linux_sys_accept(l, (void *)&lda, retval); 179 break; 180 case LINUX_SYS_getsockname: 181 error = linux_sys_getsockname(l, (void *)&lda, retval); 182 break; 183 case LINUX_SYS_getpeername: 184 error = linux_sys_getpeername(l, (void *)&lda, retval); 185 break; 186 case LINUX_SYS_socketpair: 187 error = linux_sys_socketpair(l, (void *)&lda, retval); 188 break; 189 case LINUX_SYS_send: 190 error = linux_sys_send(l, (void *)&lda, retval); 191 break; 192 case LINUX_SYS_recv: 193 error = linux_sys_recv(l, (void *)&lda, retval); 194 break; 195 case LINUX_SYS_sendto: 196 error = linux_sys_sendto(l, (void *)&lda, retval); 197 break; 198 case LINUX_SYS_recvfrom: 199 error = linux_sys_recvfrom(l, (void *)&lda, retval); 200 break; 201 case LINUX_SYS_shutdown: 202 error = sys_shutdown(l, (void *)&lda, retval); 203 break; 204 case LINUX_SYS_setsockopt: 205 error = linux_sys_setsockopt(l, (void *)&lda, retval); 206 break; 207 case LINUX_SYS_getsockopt: 208 error = linux_sys_getsockopt(l, (void *)&lda, retval); 209 break; 210 case LINUX_SYS_sendmsg: 211 error = linux_sys_sendmsg(l, (void *)&lda, retval); 212 break; 213 case LINUX_SYS_recvmsg: 214 error = linux_sys_recvmsg(l, (void *)&lda, retval); 215 break; 216 default: 217 error = ENOSYS; 218 break; 219 } 220 221 DPRINTF(("sys_%s() = %d\n", linux_socketcall[SCARG(uap, what)].name, 222 error)); 223 return error; 224 } 225
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