Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/common/linux_socketcall.c
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1 /* $NetBSD: linux_socketcall.c,v 1.39 2008/07/03 14:07:09 njoly 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 1.39 2008/07/03 14:07:09 njoly 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/syscallargs.h> 57 58 #include <compat/sys/socket.h> 59 60 #include <compat/linux/common/linux_types.h> 61 #include <compat/linux/common/linux_util.h> 62 #include <compat/linux/common/linux_signal.h> 63 #include <compat/linux/common/linux_ioctl.h> 64 #include <compat/linux/common/linux_socket.h> 65 #include <compat/linux/common/linux_socketcall.h> 66 #include <compat/linux/common/linux_sockio.h> 67 68 #include <compat/linux/linux_syscallargs.h> 69 70 #undef DPRINTF 71 #ifdef DEBUG_LINUX 72 #define DPRINTF(a) uprintf a 73 #else 74 #define DPRINTF(a) 75 #endif 76 77 /* Used on: arm, i386, m68k, mips, ppc, sparc, sparc64 */ 78 /* Not used on: alpha, amd64 */ 79 80 /* 81 * This file contains the linux_socketcall() multiplexer. Arguments 82 * for the various socket calls are on the user stack. A pointer 83 * to them is the only thing that is passed. We copyin the arguments 84 * here so the individual functions can assume they are normal syscalls. 85 */ 86 87 /* The sizes of the arguments. Used for copyin. */ 88 static const struct { 89 const char *name; 90 int argsize; 91 } linux_socketcall[LINUX_MAX_SOCKETCALL+1] = { 92 {"invalid", -1}, /* 0 */ 93 {"socket", sizeof(struct linux_sys_socket_args)}, /* 1 */ 94 {"bind", sizeof(struct linux_sys_bind_args)}, /* 2 */ 95 {"connect", sizeof(struct linux_sys_connect_args)}, /* 3 */ 96 {"listen", sizeof(struct linux_sys_listen_args)}, /* 4 */ 97 {"accept", sizeof(struct linux_sys_accept_args)}, /* 5 */ 98 {"getsockname", sizeof(struct linux_sys_getsockname_args)}, /* 6 */ 99 {"getpeername", sizeof(struct linux_sys_getpeername_args)}, /* 7 */ 100 {"socketpair", sizeof(struct linux_sys_socketpair_args)}, /* 8 */ 101 {"send", sizeof(struct linux_sys_send_args)}, /* 9 */ 102 {"recv", sizeof(struct linux_sys_recv_args)}, /* 10 */ 103 {"sendto", sizeof(struct linux_sys_sendto_args)}, /* 11 */ 104 {"recvfrom", sizeof(struct linux_sys_recvfrom_args)}, /* 12 */ 105 {"shutdown", sizeof(struct linux_sys_shutdown_args)}, /* 13 */ 106 {"setsockopt", sizeof(struct linux_sys_setsockopt_args)}, /* 14 */ 107 {"getsockopt", sizeof(struct linux_sys_getsockopt_args)}, /* 15 */ 108 {"sendmsg", sizeof(struct linux_sys_sendmsg_args)}, /* 16 */ 109 {"recvmsg", sizeof(struct linux_sys_recvmsg_args)}, /* 17 */ 110 }; 111 112 /* 113 * Entry point to all Linux socket calls. Just check which call to 114 * make and take appropriate action. 115 */ 116 int 117 linux_sys_socketcall(struct lwp *l, const struct linux_sys_socketcall_args *uap, register_t *retval) 118 { 119 /* { 120 syscallarg(int) what; 121 syscallarg(void *) args; 122 } */ 123 struct linux_socketcall_dummy_args lda; 124 int error; 125 126 if (SCARG(uap, what) < 0 || SCARG(uap, what) > LINUX_MAX_SOCKETCALL) 127 return ENOSYS; 128 129 if ((error = copyin(SCARG(uap, args), &lda, 130 linux_socketcall[SCARG(uap, what)].argsize))) { 131 DPRINTF(("copyin for %s failed %d\n", 132 linux_socketcall[SCARG(uap, what)].name, error)); 133 return error; 134 } 135 136 ktrkuser(linux_socketcall[SCARG(uap, what)].name, &lda, 137 linux_socketcall[SCARG(uap, what)].argsize); 138 139 #ifdef DEBUG_LINUX 140 /* dump the passed argument data */ 141 { 142 DPRINTF(("linux_socketcall('%s'): ", 143 linux_socketcall[SCARG(uap, what)].name)); 144 145 if (SCARG(uap, what) == LINUX_SYS_socket) { 146 DPRINTF(("[dom %d type %d proto %d]\n", 147 lda.dummy_ints[0], 148 lda.dummy_ints[1], 149 lda.dummy_ints[2])); 150 } else { 151 int i, sz; 152 u_int8_t *data = (u_int8_t *)&lda.dummy_ints[1]; 153 154 sz = linux_socketcall[SCARG(uap, what)].argsize 155 - sizeof(lda.dummy_ints[0]); 156 157 DPRINTF(("socket %d [", lda.dummy_ints[0])); 158 for(i=0; i < sz; i++) 159 DPRINTF(("%02x ", data[i])); 160 DPRINTF(("]\n")); 161 } 162 } 163 #endif 164 165 switch (SCARG(uap, what)) { 166 case LINUX_SYS_socket: 167 error = linux_sys_socket(l, (void *)&lda, retval); 168 break; 169 case LINUX_SYS_bind: 170 error = linux_sys_bind(l, (void *)&lda, retval); 171 break; 172 case LINUX_SYS_connect: 173 error = linux_sys_connect(l, (void *)&lda, retval); 174 break; 175 case LINUX_SYS_listen: 176 error = sys_listen(l, (void *)&lda, retval); 177 break; 178 case LINUX_SYS_accept: 179 error = linux_sys_accept(l, (void *)&lda, retval); 180 break; 181 case LINUX_SYS_getsockname: 182 error = linux_sys_getsockname(l, (void *)&lda, retval); 183 break; 184 case LINUX_SYS_getpeername: 185 error = linux_sys_getpeername(l, (void *)&lda, retval); 186 break; 187 case LINUX_SYS_socketpair: 188 error = linux_sys_socketpair(l, (void *)&lda, retval); 189 break; 190 case LINUX_SYS_send: 191 error = linux_sys_send(l, (void *)&lda, retval); 192 break; 193 case LINUX_SYS_recv: 194 error = linux_sys_recv(l, (void *)&lda, retval); 195 break; 196 case LINUX_SYS_sendto: 197 error = linux_sys_sendto(l, (void *)&lda, retval); 198 break; 199 case LINUX_SYS_recvfrom: 200 error = linux_sys_recvfrom(l, (void *)&lda, retval); 201 break; 202 case LINUX_SYS_shutdown: 203 error = sys_shutdown(l, (void *)&lda, retval); 204 break; 205 case LINUX_SYS_setsockopt: 206 error = linux_sys_setsockopt(l, (void *)&lda, retval); 207 break; 208 case LINUX_SYS_getsockopt: 209 error = linux_sys_getsockopt(l, (void *)&lda, retval); 210 break; 211 case LINUX_SYS_sendmsg: 212 error = linux_sys_sendmsg(l, (void *)&lda, retval); 213 break; 214 case LINUX_SYS_recvmsg: 215 error = linux_sys_recvmsg(l, (void *)&lda, retval); 216 break; 217 default: 218 error = ENOSYS; 219 break; 220 } 221 222 DPRINTF(("sys_%s() = %d\n", linux_socketcall[SCARG(uap, what)].name, 223 error)); 224 return error; 225 }
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