diff options
Diffstat (limited to 'src/VBox/HostDrivers/Support/linux/SUPWrapperMod-linux.c')
| -rw-r--r-- | src/VBox/HostDrivers/Support/linux/SUPWrapperMod-linux.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/src/VBox/HostDrivers/Support/linux/SUPWrapperMod-linux.c b/src/VBox/HostDrivers/Support/linux/SUPWrapperMod-linux.c new file mode 100644 index 00000000..c4a81849 --- /dev/null +++ b/src/VBox/HostDrivers/Support/linux/SUPWrapperMod-linux.c @@ -0,0 +1,211 @@ +/* $Id: SUPWrapperMod-linux.c $ */ +/** @file + * Linux .r0 wrapper module template. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define IPRT_WITHOUT_EFLAGS_AC_PRESERVING +#include "the-linux-kernel.h" + +#include "version-generated.h" +#include "product-generated.h" +#include "revision-generated.h" + +#include <VBox/sup.h> + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** @def WRAPPED_MODULE_FLAGS + * SUPLDRWRAPPEDMODULE_F_XXX or 0. Default: 0 */ +#ifndef WRAPPED_MODULE_FLAGS +# define WRAPPED_MODULE_FLAGS 0 +#endif +/** @def WRAPPED_MODULE_INIT + * The module init function or NULL. Default: ModuleInit */ +#ifndef WRAPPED_MODULE_INIT +# define WRAPPED_MODULE_INIT ModuleInit +#endif +/** @def WRAPPED_MODULE_TERM + * The module termination function or NULL. Default: ModuleTerm */ +#ifndef WRAPPED_MODULE_TERM +# define WRAPPED_MODULE_TERM ModuleTerm +#endif +/** @def WRAPPED_MODULE_SRV_REQ_HANDLER + * The service request handler function. Default: NULL */ +#ifndef WRAPPED_MODULE_SRV_REQ_HANDLER +# define WRAPPED_MODULE_SRV_REQ_HANDLER NULL +#endif +/** @def WRAPPED_MODULE_VMMR0_ENTRY_FAST + * The VMMR0 fast entry point. Default: NULL */ +#ifndef WRAPPED_MODULE_VMMR0_ENTRY_FAST +# define WRAPPED_MODULE_VMMR0_ENTRY_FAST NULL +#endif +/** @def WRAPPED_MODULE_VMMR0_ENTRY_EX + * The VMMR0 extended entry point. Default: NULL */ +#ifndef WRAPPED_MODULE_VMMR0_ENTRY_EX +# define WRAPPED_MODULE_VMMR0_ENTRY_EX NULL +#endif +/** @def WRAPPED_MODULE_SRV_REQ_HANDLER + * The service request handler function. Default: NULL */ +#ifndef WRAPPED_MODULE_SRV_REQ_HANDLER +# define WRAPPED_MODULE_SRV_REQ_HANDLER NULL +#endif + +#ifdef DOXYGEN_RUNNING +/** @def WRAPPED_MODULE_LINUX_EXPORTS + * Define to enabled linux exports. (Needed for VMMR0.r0 only at present.) */ +# define WRAPPED_MODULE_LINUX_EXPORTS +#endif +#ifdef DOXYGEN_RUNNING +/** @def WRAPPED_MODULE_LICENSE_PROPRIETARY + * Define to select proprietary license instead of GPL. */ +# define WRAPPED_MODULE_LICENSE_PROPRIETARY +#endif +#ifdef DOXYGEN_RUNNING +/** @def WRAPPED_MODULE_SYMBOL_INCLUDE + * The include with SYMBOL_ENTRY() invocations for all exported symbols. */ +# define WRAPPED_MODULE_SYMBOL_INCLUDE "iprt/cdefs.h" +#endif + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +static int __init VBoxWrapperModInit(void); +static void __exit VBoxWrapperModUnload(void); + + +/* + * Prototype the symbols: + */ +#undef RT_MANGLER +#define RT_MANGLER(a_Name) a_Name /* No mangling */ +#define SYMBOL_ENTRY(a_Name) extern FNRT a_Name; +#include WRAPPED_MODULE_SYMBOL_INCLUDE +#undef SYMBOL_ENTRY + +/* + * Export the symbols linux style: + */ +#ifdef WRAPPED_MODULE_LINUX_EXPORTS +# define SYMBOL_ENTRY(a_Name) EXPORT_SYMBOL(a_Name); +# include WRAPPED_MODULE_SYMBOL_INCLUDE +# undef SYMBOL_ENTRY +#endif + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +extern char vboxr0mod_start[]; /**< start of text in the .r0 module. */ +extern char vboxr0mod_end[]; /**< end of bss in the .r0 module. */ + +/** The symbol table. */ +static SUPLDRWRAPMODSYMBOL const g_aSymbols[] = +{ +#define SYMBOL_ENTRY(a_Name) { #a_Name, &a_Name }, +#include WRAPPED_MODULE_SYMBOL_INCLUDE +#undef SYMBOL_ENTRY +}; + +/** Wrapped module registration info. */ +static SUPLDRWRAPPEDMODULE const g_WrappedMod = +{ + /* .uMagic = */ SUPLDRWRAPPEDMODULE_MAGIC, + /* .uVersion = */ SUPLDRWRAPPEDMODULE_VERSION, + /* .fFlags = */ WRAPPED_MODULE_FLAGS, + /* .pvImageStart = */ &vboxr0mod_start[0], + /* .pvImageEnd = */ &vboxr0mod_end[0], + + /* .pfnModuleInit = */ WRAPPED_MODULE_INIT, + /* .pfnModuleTerm = */ WRAPPED_MODULE_TERM, + /* .pfnVMMR0EntryFast = */ WRAPPED_MODULE_VMMR0_ENTRY_FAST, + /* .pfnVMMR0EntryEx = */ WRAPPED_MODULE_VMMR0_ENTRY_EX, + /* .pfnSrvReqHandler = */ (PFNSUPR0SERVICEREQHANDLER)WRAPPED_MODULE_SRV_REQ_HANDLER, + + /* .apSymbols = */ g_aSymbols, + /* .cSymbols = */ RT_ELEMENTS(g_aSymbols), + + /* .szName = */ WRAPPED_MODULE_NAME, + /* .uEndMagic = */ SUPLDRWRAPPEDMODULE_MAGIC, +}; + +/** The wrapped module handle. */ +static void *g_hWrappedRegistration = NULL; + + +/** + * Initialize module. + * + * @returns appropriate status code. + */ +static int __init VBoxWrapperModInit(void) +{ + /*printk("vboxwrap/" WRAPPED_MODULE_NAME ": VBoxWrapperModInit\n");*/ + int rc = SUPDrvLinuxLdrRegisterWrappedModule(&g_WrappedMod, KBUILD_MODNAME, &g_hWrappedRegistration); + if (rc == 0) + return 0; + printk("vboxwrap/" WRAPPED_MODULE_NAME ": SUPDrvLinuxRegisterWrappedModule failed: %d\n", rc); + return -EINVAL; +} + + +/** + * Unload the module. + */ +static void __exit VBoxWrapperModUnload(void) +{ + /*printk("vboxwrap/" WRAPPED_MODULE_NAME ": VBoxWrapperModUnload\n");*/ + SUPDrvLinuxLdrDeregisterWrappedModule(&g_WrappedMod, &g_hWrappedRegistration); +} + +module_init(VBoxWrapperModInit); +module_exit(VBoxWrapperModUnload); + +MODULE_AUTHOR(VBOX_VENDOR); +MODULE_DESCRIPTION(VBOX_PRODUCT " - " WRAPPED_MODULE_NAME); +#ifndef WRAPPED_MODULE_LICENSE_PROPRIETARY +MODULE_LICENSE("GPL"); +#else +MODULE_LICENSE("Proprietary"); +#endif +#ifdef MODULE_VERSION +MODULE_VERSION(VBOX_VERSION_STRING " r" RT_XSTR(VBOX_SVN_REV)); +#endif + |