1 /* $NetBSD: netbsd32_mod.c,v 1.5 2014/07/22 08:18:33 maxv 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: netbsd32_mod.c,v 1.5 2014/07/22 08:18:33 maxv Exp $"); 34 35 #ifdef _KERNEL_OPT 36 #include "opt_execfmt.h" 37 # define DEPS1 "compat" 38 #else 39 # define DEPS1 "compat,ksem" 40 #endif 41 42 #ifndef ELFSIZE 43 #define ELFSIZE ARCH_ELFSIZE 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/module.h> 48 #include <sys/exec.h> 49 #include <sys/exec_elf.h> 50 51 #include <compat/netbsd32/netbsd32_sysctl.h> 52 #include <compat/netbsd32/netbsd32_exec.h> 53 54 #if defined(EXEC_ELF32) 55 # define DEPS2 ",exec_elf32" 56 #else 57 # define DEPS2 "" 58 #endif 59 60 #define ELF32_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux32Info), \ 61 sizeof(Elf32_Addr)) + MAXPATHLEN + ALIGN(1)) 62 63 MODULE(MODULE_CLASS_EXEC, compat_netbsd32, DEPS1 DEPS2); 64 65 static struct execsw netbsd32_execsw[] = { 66 #ifdef EXEC_AOUT 67 { 68 .es_hdrsz = sizeof(struct netbsd32_exec), 69 .es_makecmds = exec_netbsd32_makecmds, 70 .u = { 71 .elf_probe_func = NULL, 72 }, 73 .es_emul = &emul_netbsd32, 74 .es_prio = EXECSW_PRIO_FIRST, 75 .es_arglen = 0, 76 .es_copyargs = netbsd32_copyargs, 77 .es_setregs = NULL, 78 .es_coredump = coredump_netbsd32, 79 .es_setup_stack = exec_setup_stack, 80 }, 81 #endif 82 #ifdef EXEC_ELF32 83 { 84 .es_hdrsz = sizeof (Elf32_Ehdr), 85 .es_makecmds = exec_elf32_makecmds, 86 .u = { 87 .elf_probe_func = netbsd32_elf32_probe, 88 }, 89 .es_emul = &emul_netbsd32, 90 .es_prio = EXECSW_PRIO_ANY, 91 .es_arglen = ELF32_AUXSIZE, 92 .es_copyargs = netbsd32_elf32_copyargs, 93 .es_setregs = NULL, 94 .es_coredump = coredump_elf32, 95 .es_setup_stack = exec_setup_stack, /* XXX XXX XXX */ 96 }, 97 #endif 98 }; 99 100 static int 101 compat_netbsd32_modcmd(modcmd_t cmd, void *arg) 102 { 103 int error; 104 105 switch (cmd) { 106 case MODULE_CMD_INIT: 107 netbsd32_sysctl_init(); 108 error = exec_add(netbsd32_execsw, 109 __arraycount(netbsd32_execsw)); 110 if (error != 0) 111 netbsd32_sysctl_fini(); 112 return error; 113 114 case MODULE_CMD_FINI: 115 error = exec_remove(netbsd32_execsw, 116 __arraycount(netbsd32_execsw)); 117 if (error == 0) 118 netbsd32_sysctl_fini(); 119 return error; 120 121 default: 122 return ENOTTY; 123 } 124 } 125