1 /* $NetBSD: linux32_mod.c,v 1.7 2015/12/03 23:51:24 pgoyette 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: linux32_mod.c,v 1.7 2015/12/03 23:51:24 pgoyette 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_exec.h> 49 50 #include <compat/linux32/common/linux32_sysctl.h> 51 #include <compat/linux32/common/linux32_exec.h> 52 53 #if defined(EXEC_ELF32) 54 # define MD1 ",exec_elf32,compat_netbsd32,compat_netbsd32_sysvipc" 55 #else 56 # define MD1 "" 57 #endif 58 59 MODULE(MODULE_CLASS_EXEC, compat_linux32, "compat_linux" MD1); 60 61 static struct execsw linux32_execsw[] = { 62 #if defined(EXEC_ELF32) 63 { 64 .es_hdrsz = sizeof (Elf32_Ehdr), 65 .es_makecmds = exec_elf32_makecmds, 66 .u = { 67 .elf_probe_func = linux32_elf32_probe, 68 }, 69 .es_emul = &emul_linux32, 70 .es_prio = EXECSW_PRIO_ANY, 71 .es_arglen = LINUX32_ELF_AUX_ARGSIZ, 72 .es_copyargs = linux32_elf32_copyargs, 73 .es_setregs = NULL, 74 .es_coredump = coredump_elf32, 75 .es_setup_stack = linux_exec_setup_stack, 76 }, 77 #endif 78 }; 79 80 static int 81 compat_linux32_modcmd(modcmd_t cmd, void *arg) 82 { 83 int error; 84 85 switch (cmd) { 86 case MODULE_CMD_INIT: 87 linux32_sysctl_init(); 88 error = exec_add(linux32_execsw, 89 __arraycount(linux32_execsw)); 90 if (error != 0) 91 linux32_sysctl_fini(); 92 return error; 93 94 case MODULE_CMD_FINI: 95 error = exec_remove(linux32_execsw, 96 __arraycount(linux32_execsw)); 97 if (error == 0) 98 linux32_sysctl_fini(); 99 return error; 100 101 default: 102 return ENOTTY; 103 } 104 } 105