linux_socketcall.c revision 1.34.6.2
1 /* $NetBSD: linux_socketcall.c,v 1.34.6.2 2007/12/09 19:37:05 jmcneill 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 1.34.6.2 2007/12/09 19:37:05 jmcneill 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 #include <sys/ktrace.h> 62 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, amd64 */ 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 const 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(struct lwp *l, void *v, register_t *retval) 123 { 124 struct linux_sys_socketcall_args /* { 125 syscallarg(int) what; 126 syscallarg(void *) args; 127 } */ *uap = v; 128 struct linux_socketcall_dummy_args lda; 129 int error; 130 131 if (SCARG(uap, what) < 0 || SCARG(uap, what) > LINUX_MAX_SOCKETCALL) 132 return ENOSYS; 133 134 if ((error = copyin(SCARG(uap, args), &lda, 135 linux_socketcall[SCARG(uap, what)].argsize))) { 136 DPRINTF(("copyin for %s failed %d\n", 137 linux_socketcall[SCARG(uap, what)].name, error)); 138 return error; 139 } 140 141 ktrkuser(linux_socketcall[SCARG(uap, what)].name, &lda, 142 linux_socketcall[SCARG(uap, what)].argsize); 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 } 231
Indexes created Sun Sep 21 16:09:51 GMT 2025