1 /* $NetBSD: freebsd_mod.c,v 1.1 2008/11/19 18:36:02 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: freebsd_mod.c,v 1.1 2008/11/19 18:36:02 ad Exp $"); 34 35 #ifdef _KERNEL_OPT 36 #include "opt_execfmt.h" 37 #endif 38 39 #include <sys/param.h> 40 #include <sys/module.h> 41 #include <sys/exec.h> 42 #include <sys/exec_elf.h> 43 #include <sys/signalvar.h> 44 45 #include <compat/freebsd/freebsd_exec.h> 46 #include <compat/freebsd/freebsd_sysctl.h> 47 48 #if defined(EXEC_ELF32) 49 # define MD1 ",exec_elf32" 50 #else 51 # define MD1 "" 52 #endif 53 #if defined(EXEC_AOUT) 54 # define MD2 ",exec_aout" 55 #else 56 # define MD2 "" 57 #endif 58 59 #define ELF32_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux32Info), \ 60 sizeof(Elf32_Addr)) + MAXPATHLEN + ALIGN(1)) 61 62 MODULE(MODULE_CLASS_MISC, compat_freebsd, "compat,compat_ossaudio" MD1 MD2); 63 64 static struct execsw freebsd_execsw[] = { 65 #ifdef EXEC_ELF32 66 /* FreeBSD Elf32 (probe not 64-bit safe) */ 67 { sizeof (Elf32_Ehdr), 68 exec_elf32_makecmds, 69 { freebsd_elf32_probe }, 70 &emul_freebsd, 71 EXECSW_PRIO_ANY, 72 ELF32_AUXSIZE, 73 elf32_copyargs, 74 NULL, 75 coredump_elf32, 76 exec_setup_stack }, 77 #endif 78 #ifdef EXEC_AOUT 79 /* FreeBSD a.out (native word size) */ 80 { FREEBSD_AOUT_HDR_SIZE, 81 exec_freebsd_aout_makecmds, 82 { NULL }, 83 &emul_freebsd, 84 EXECSW_PRIO_ANY, 85 0, 86 copyargs, 87 NULL, 88 coredump_netbsd, 89 exec_setup_stack }, 90 #endif 91 }; 92 93 static int 94 compat_freebsd_modcmd(modcmd_t cmd, void *arg) 95 { 96 int error; 97 98 switch (cmd) { 99 case MODULE_CMD_INIT: 100 freebsd_sysctl_init(); 101 error = exec_add(freebsd_execsw, 102 __arraycount(freebsd_execsw)); 103 if (error != 0) 104 freebsd_sysctl_fini(); 105 return error; 106 107 case MODULE_CMD_FINI: 108 error = exec_remove(freebsd_execsw, 109 __arraycount(freebsd_execsw)); 110 if (error == 0) 111 freebsd_sysctl_fini(); 112 return error; 113 114 default: 115 return ENOTTY; 116 } 117 } 118