1 /* $NetBSD: linux_mod.c,v 1.1 2008/11/19 18:36:03 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software developed for The NetBSD Foundation 8 * by Andrew Doran. 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_mod.c,v 1.1 2008/11/19 18:36:03 ad Exp $"); 34 35 #ifdef _KERNEL_OPT 36 #include "opt_execfmt.h" 37 #endif 38 39 #ifndef ELFSIZE 40 #define ELFSIZE ARCH_ELFSIZE 41 #endif 42 43 #include <sys/param.h> 44 #include <sys/module.h> 45 #include <sys/exec.h> 46 #include <sys/signalvar.h> 47 48 #include <compat/linux/common/linux_sysctl.h> 49 #include <compat/linux/common/linux_exec.h> 50 51 #if defined(EXEC_ELF32) && ELFSIZE == 32 52 # define MD1 ",exec_elf32" 53 #else 54 # define MD1 "" 55 #endif 56 #if defined(EXEC_ELF64) 57 # define MD2 ",exec_elf64" 58 #else 59 # define MD2 "" 60 #endif 61 #if defined(EXEC_AOUT) 62 # define MD3 ",exec_aout" 63 #else 64 # define MD3 "" 65 #endif 66 67 MODULE(MODULE_CLASS_MISC, compat_linux, "compat,compat_ossaudio" MD1 MD2 MD3); 68 69 static struct execsw linux_execsw[] = { 70 #if defined(EXEC_ELF32) && ELFSIZE == 32 71 { sizeof (Elf32_Ehdr), 72 exec_elf32_makecmds, 73 { linux_elf32_probe }, 74 &emul_linux, 75 EXECSW_PRIO_ANY, 76 LINUX_ELF_AUX_ARGSIZ, 77 linux_elf32_copyargs, 78 NULL, 79 coredump_elf32, 80 linux_exec_setup_stack }, 81 #elif defined(EXEC_ELF64) 82 { sizeof (Elf64_Ehdr), 83 exec_elf64_makecmds, 84 { linux_elf64_probe }, 85 &emul_linux, 86 EXECSW_PRIO_ANY, 87 LINUX_ELF_AUX_ARGSIZ, 88 linux_elf64_copyargs, 89 NULL, 90 coredump_elf64, 91 linux_exec_setup_stack }, 92 #endif 93 #ifdef EXEC_AOUT 94 { LINUX_AOUT_HDR_SIZE, 95 exec_linux_aout_makecmds, 96 { NULL }, 97 &emul_linux, 98 EXECSW_PRIO_LAST, 99 LINUX_AOUT_AUX_ARGSIZ, 100 linux_aout_copyargs, 101 NULL, 102 coredump_netbsd, 103 linux_exec_setup_stack }, 104 #endif 105 }; 106 107 static int 108 compat_linux_modcmd(modcmd_t cmd, void *arg) 109 { 110 int error; 111 112 switch (cmd) { 113 case MODULE_CMD_INIT: 114 linux_sysctl_init(); 115 error = exec_add(linux_execsw, 116 __arraycount(linux_execsw)); 117 if (error != 0) 118 linux_sysctl_fini(); 119 return error; 120 121 case MODULE_CMD_FINI: 122 error = exec_remove(linux_execsw, 123 __arraycount(linux_execsw)); 124 if (error == 0) 125 linux_sysctl_fini(); 126 return error; 127 128 default: 129 return ENOTTY; 130 } 131 } 132