1 /* $NetBSD: linux_mod.c,v 1.2 2011/09/14 12:28:08 christos 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 1.2 2011/09/14 12:28:08 christos 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_futex.h> 50 #include <compat/linux/common/linux_exec.h> 51 52 #if defined(EXEC_ELF32) && ELFSIZE == 32 53 # define MD1 ",exec_elf32" 54 #else 55 # define MD1 "" 56 #endif 57 #if defined(EXEC_ELF64) 58 # define MD2 ",exec_elf64" 59 #else 60 # define MD2 "" 61 #endif 62 #if defined(EXEC_AOUT) 63 # define MD3 ",exec_aout" 64 #else 65 # define MD3 "" 66 #endif 67 68 MODULE(MODULE_CLASS_MISC, compat_linux, "compat,compat_ossaudio" MD1 MD2 MD3); 69 70 static struct execsw linux_execsw[] = { 71 #if defined(EXEC_ELF32) && ELFSIZE == 32 72 { sizeof (Elf32_Ehdr), 73 exec_elf32_makecmds, 74 { linux_elf32_probe }, 75 &emul_linux, 76 EXECSW_PRIO_ANY, 77 LINUX_ELF_AUX_ARGSIZ, 78 linux_elf32_copyargs, 79 NULL, 80 coredump_elf32, 81 linux_exec_setup_stack }, 82 #elif defined(EXEC_ELF64) 83 { sizeof (Elf64_Ehdr), 84 exec_elf64_makecmds, 85 { linux_elf64_probe }, 86 &emul_linux, 87 EXECSW_PRIO_ANY, 88 LINUX_ELF_AUX_ARGSIZ, 89 linux_elf64_copyargs, 90 NULL, 91 coredump_elf64, 92 linux_exec_setup_stack }, 93 #endif 94 #ifdef EXEC_AOUT 95 { LINUX_AOUT_HDR_SIZE, 96 exec_linux_aout_makecmds, 97 { NULL }, 98 &emul_linux, 99 EXECSW_PRIO_LAST, 100 LINUX_AOUT_AUX_ARGSIZ, 101 linux_aout_copyargs, 102 NULL, 103 coredump_netbsd, 104 linux_exec_setup_stack }, 105 #endif 106 }; 107 108 static int 109 compat_linux_modcmd(modcmd_t cmd, void *arg) 110 { 111 int error; 112 113 switch (cmd) { 114 case MODULE_CMD_INIT: 115 linux_futex_init(); 116 linux_sysctl_init(); 117 error = exec_add(linux_execsw, 118 __arraycount(linux_execsw)); 119 if (error != 0) 120 linux_sysctl_fini(); 121 return error; 122 123 case MODULE_CMD_FINI: 124 error = exec_remove(linux_execsw, 125 __arraycount(linux_execsw)); 126 if (error == 0) { 127 linux_sysctl_fini(); 128 linux_futex_fini(); 129 } 130 return error; 131 132 default: 133 return ENOTTY; 134 } 135 } 136