1 | /* $Id: SUPWrapperMod-linux.c 106061 2024-09-16 14:03:52Z vboxsync $ */
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2 | /** @file
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3 | * Linux .r0 wrapper module template.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2024 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * The contents of this file may alternatively be used under the terms
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26 | * of the Common Development and Distribution License Version 1.0
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27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | * in the VirtualBox distribution, in which case the provisions of the
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29 | * CDDL are applicable instead of those of the GPL.
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30 | *
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31 | * You may elect to license modified versions of this file under the
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32 | * terms and conditions of either the GPL or the CDDL or both.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #define IPRT_WITHOUT_EFLAGS_AC_PRESERVING
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42 | #include "the-linux-kernel.h"
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43 |
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44 | #include "version-generated.h"
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45 | #include "product-generated.h"
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46 | #include "revision-generated.h"
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47 |
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48 | #include <VBox/sup.h>
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49 |
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50 |
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51 | /*********************************************************************************************************************************
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52 | * Defined Constants And Macros *
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53 | *********************************************************************************************************************************/
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54 | /** @def WRAPPED_MODULE_FLAGS
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55 | * SUPLDRWRAPPEDMODULE_F_XXX or 0. Default: 0 */
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56 | #ifndef WRAPPED_MODULE_FLAGS
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57 | # define WRAPPED_MODULE_FLAGS 0
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58 | #endif
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59 | /** @def WRAPPED_MODULE_INIT
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60 | * The module init function or NULL. Default: ModuleInit */
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61 | #ifndef WRAPPED_MODULE_INIT
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62 | # define WRAPPED_MODULE_INIT ModuleInit
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63 | #endif
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64 | /** @def WRAPPED_MODULE_TERM
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65 | * The module termination function or NULL. Default: ModuleTerm */
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66 | #ifndef WRAPPED_MODULE_TERM
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67 | # define WRAPPED_MODULE_TERM ModuleTerm
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68 | #endif
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69 | /** @def WRAPPED_MODULE_SRV_REQ_HANDLER
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70 | * The service request handler function. Default: NULL */
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71 | #ifndef WRAPPED_MODULE_SRV_REQ_HANDLER
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72 | # define WRAPPED_MODULE_SRV_REQ_HANDLER NULL
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73 | #endif
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74 | /** @def WRAPPED_MODULE_VMMR0_ENTRY_FAST
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75 | * The VMMR0 fast entry point. Default: NULL */
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76 | #ifndef WRAPPED_MODULE_VMMR0_ENTRY_FAST
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77 | # define WRAPPED_MODULE_VMMR0_ENTRY_FAST NULL
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78 | #endif
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79 | /** @def WRAPPED_MODULE_VMMR0_ENTRY_EX
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80 | * The VMMR0 extended entry point. Default: NULL */
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81 | #ifndef WRAPPED_MODULE_VMMR0_ENTRY_EX
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82 | # define WRAPPED_MODULE_VMMR0_ENTRY_EX NULL
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83 | #endif
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84 | /** @def WRAPPED_MODULE_SRV_REQ_HANDLER
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85 | * The service request handler function. Default: NULL */
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86 | #ifndef WRAPPED_MODULE_SRV_REQ_HANDLER
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87 | # define WRAPPED_MODULE_SRV_REQ_HANDLER NULL
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88 | #endif
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89 |
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90 | #ifdef DOXYGEN_RUNNING
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91 | /** @def WRAPPED_MODULE_LINUX_EXPORTS
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92 | * Define to enabled linux exports. (Needed for VMMR0.r0 only at present.) */
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93 | # define WRAPPED_MODULE_LINUX_EXPORTS
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94 | #endif
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95 | #ifdef DOXYGEN_RUNNING
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96 | /** @def WRAPPED_MODULE_LICENSE_PROPRIETARY
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97 | * Define to select proprietary license instead of GPL. */
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98 | # define WRAPPED_MODULE_LICENSE_PROPRIETARY
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99 | #endif
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100 | #ifdef DOXYGEN_RUNNING
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101 | /** @def WRAPPED_MODULE_SYMBOL_INCLUDE
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102 | * The include with SYMBOL_ENTRY() invocations for all exported symbols. */
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103 | # define WRAPPED_MODULE_SYMBOL_INCLUDE "iprt/cdefs.h"
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104 | #endif
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105 |
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106 |
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107 | /*********************************************************************************************************************************
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108 | * Internal Functions *
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109 | *********************************************************************************************************************************/
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110 | static int __init VBoxWrapperModInit(void);
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111 | static void __exit VBoxWrapperModUnload(void);
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112 |
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113 |
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114 | /*
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115 | * Prototype the symbols:
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116 | */
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117 | #undef RT_MANGLER
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118 | #define RT_MANGLER(a_Name) a_Name /* No mangling */
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119 | #define SYMBOL_ENTRY(a_Name) extern FNRT a_Name;
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120 | #include WRAPPED_MODULE_SYMBOL_INCLUDE
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121 | #undef SYMBOL_ENTRY
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122 |
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123 | /*
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124 | * Export the symbols linux style:
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125 | */
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126 | #ifdef WRAPPED_MODULE_LINUX_EXPORTS
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127 | # define SYMBOL_ENTRY(a_Name) EXPORT_SYMBOL(a_Name);
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128 | # include WRAPPED_MODULE_SYMBOL_INCLUDE
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129 | # undef SYMBOL_ENTRY
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130 | #endif
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131 |
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132 |
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133 | /*********************************************************************************************************************************
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134 | * Global Variables *
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135 | *********************************************************************************************************************************/
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136 | extern char vboxr0mod_start[]; /**< start of text in the .r0 module. */
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137 | extern char vboxr0mod_end[]; /**< end of bss in the .r0 module. */
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138 |
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139 | /** The symbol table. */
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140 | static SUPLDRWRAPMODSYMBOL const g_aSymbols[] =
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141 | {
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142 | #define SYMBOL_ENTRY(a_Name) { #a_Name, &a_Name },
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143 | #include WRAPPED_MODULE_SYMBOL_INCLUDE
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144 | #undef SYMBOL_ENTRY
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145 | };
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146 |
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147 | /** Wrapped module registration info. */
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148 | static SUPLDRWRAPPEDMODULE const g_WrappedMod =
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149 | {
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150 | /* .uMagic = */ SUPLDRWRAPPEDMODULE_MAGIC,
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151 | /* .uVersion = */ SUPLDRWRAPPEDMODULE_VERSION,
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152 | /* .fFlags = */ WRAPPED_MODULE_FLAGS,
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153 | /* .pvImageStart = */ &vboxr0mod_start[0],
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154 | /* .pvImageEnd = */ &vboxr0mod_end[0],
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155 |
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156 | /* .pfnModuleInit = */ WRAPPED_MODULE_INIT,
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157 | /* .pfnModuleTerm = */ WRAPPED_MODULE_TERM,
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158 | /* .pfnVMMR0EntryFast = */ WRAPPED_MODULE_VMMR0_ENTRY_FAST,
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159 | /* .pfnVMMR0EntryEx = */ WRAPPED_MODULE_VMMR0_ENTRY_EX,
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160 | /* .pfnSrvReqHandler = */ (PFNSUPR0SERVICEREQHANDLER)WRAPPED_MODULE_SRV_REQ_HANDLER,
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161 |
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162 | /* .apSymbols = */ g_aSymbols,
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163 | /* .cSymbols = */ RT_ELEMENTS(g_aSymbols),
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164 |
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165 | /* .szName = */ WRAPPED_MODULE_NAME,
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166 | /* .uEndMagic = */ SUPLDRWRAPPEDMODULE_MAGIC,
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167 | };
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168 |
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169 | /** The wrapped module handle. */
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170 | static void *g_hWrappedRegistration = NULL;
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171 |
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172 |
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173 | /**
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174 | * Initialize module.
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175 | *
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176 | * @returns appropriate status code.
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177 | */
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178 | static int __init VBoxWrapperModInit(void)
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179 | {
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180 | /*printk("vboxwrap/" WRAPPED_MODULE_NAME ": VBoxWrapperModInit\n");*/
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181 | int rc = SUPDrvLinuxLdrRegisterWrappedModule(&g_WrappedMod, KBUILD_MODNAME, &g_hWrappedRegistration);
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182 | if (rc == 0)
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183 | return 0;
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184 | printk("vboxwrap/" WRAPPED_MODULE_NAME ": SUPDrvLinuxRegisterWrappedModule failed: %d\n", rc);
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185 | return -EINVAL;
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186 | }
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187 |
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188 |
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189 | /**
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190 | * Unload the module.
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191 | */
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192 | static void __exit VBoxWrapperModUnload(void)
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193 | {
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194 | /*printk("vboxwrap/" WRAPPED_MODULE_NAME ": VBoxWrapperModUnload\n");*/
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195 | SUPDrvLinuxLdrDeregisterWrappedModule(&g_WrappedMod, &g_hWrappedRegistration);
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196 | }
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197 |
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198 | module_init(VBoxWrapperModInit);
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199 | module_exit(VBoxWrapperModUnload);
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200 |
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201 | MODULE_AUTHOR(VBOX_VENDOR);
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202 | MODULE_DESCRIPTION(VBOX_PRODUCT " - " WRAPPED_MODULE_NAME);
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203 | #ifndef WRAPPED_MODULE_LICENSE_PROPRIETARY
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204 | MODULE_LICENSE("GPL");
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205 | #else
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206 | MODULE_LICENSE("Proprietary");
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207 | #endif
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208 | #ifdef MODULE_VERSION
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209 | MODULE_VERSION(VBOX_VERSION_STRING " r" RT_XSTR(VBOX_SVN_REV));
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210 | #endif
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211 |
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