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/* $Id: DBGPlugInLinuxModuleCodeTmpl.cpp.h $ */
/** @file
* DBGPlugInLinux - Code template for struct module processing.
*/
/*
* Copyright (C) 2019-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/*********************************************************************************************************************************
* Defined Constants And Macros *
*********************************************************************************************************************************/
#ifndef LNX_MK_VER
# define LNX_MK_VER(major, minor, build) (((major) << 22) | ((minor) << 12) | (build))
#endif
#if LNX_64BIT
# define LNX_ULONG_T uint64_t
#else
# define LNX_ULONG_T uint32_t
#endif
#if LNX_64BIT
# define PAD32ON64(seq) uint32_t RT_CONCAT(u32Padding,seq);
#else
# define PAD32ON64(seq)
#endif
/*********************************************************************************************************************************
* Structures and Typedefs *
*********************************************************************************************************************************/
#if LNX_VER >= LNX_MK_VER(2,6,11)
typedef struct RT_CONCAT(LNXMODKOBJECT,LNX_SUFFIX)
{
LNX_PTR_T uPtrKName;
# if LNX_VER < LNX_MK_VER(2,6,24)
char name[20];
# endif
# if LNX_VER < LNX_MK_VER(2,6,27)
int32_t cRefs;
# if LNX_VER >= LNX_MK_VER(2,6,24)
PAD32ON64(0)
# endif
# endif
LNX_PTR_T uPtrNext;
LNX_PTR_T uPtrPrev;
LNX_PTR_T uPtrParent; /**< struct kobject pointer */
LNX_PTR_T uPtrKset; /**< struct kset pointer */
LNX_PTR_T uPtrKtype; /**< struct kobj_type pointer */
LNX_PTR_T uPtrDirEntry; /**< struct dentry pointer; 2.6.23+ sysfs_dirent. */
# if LNX_VER >= LNX_MK_VER(2,6,17) && LNX_VER < LNX_MK_VER(2,6,24)
LNX_PTR_T aPtrWaitQueueHead[3];
# endif
# if LNX_VER >= LNX_MK_VER(2,6,27)
int32_t cRefs;
uint32_t uStateStuff;
# elif LNX_VER >= LNX_MK_VER(2,6,25)
LNX_ULONG_T uStateStuff;
# endif
/* non-kobject: */
LNX_PTR_T uPtrModule; /**< struct module pointer. */
# if LNX_VER >= LNX_MK_VER(2,6,21)
LNX_PTR_T uPtrDriverDir; /**< Points to struct kobject. */
# endif
} RT_CONCAT(LNXMODKOBJECT,LNX_SUFFIX);
#endif
#if LNX_VER == LNX_MK_VER(2,6,24) && LNX_64BIT
AssertCompileMemberOffset(RT_CONCAT(LNXMODKOBJECT,LNX_SUFFIX), uPtrParent, 32);
AssertCompileMemberOffset(RT_CONCAT(LNXMODKOBJECT,LNX_SUFFIX), uPtrParent, 32);
AssertCompileSize(RT_CONCAT(LNXMODKOBJECT,LNX_SUFFIX), 80);
#endif
/**
* Maps to the start of struct module in include/linux/module.h.
*/
typedef struct RT_CONCAT(LNXKMODULE,LNX_SUFFIX)
{
#if LNX_VER >= LNX_MK_VER(2,5,48)
/*
* This first part is mostly always the same.
*/
int32_t state;
PAD32ON64(0)
LNX_PTR_T uPtrNext;
LNX_PTR_T uPtrPrev;
char name[64 - sizeof(LNX_PTR_T)];
/*
* Here be spaghetti dragons.
*/
# if LNX_VER >= LNX_MK_VER(2,6,11)
RT_CONCAT(LNXMODKOBJECT,LNX_SUFFIX) mkobj; /**< Was just kobj for a while. */
LNX_PTR_T uPtrParamAttrs; /**< Points to struct module_param_attrs. */
# if LNX_VER >= LNX_MK_VER(2,6,17)
LNX_PTR_T uPtrModInfoAttrs; /**< Points to struct module_attribute. */
# endif
# if LNX_VER == LNX_MK_VER(2,6,20)
LNX_PTR_T uPtrDriverDir; /**< Points to struct kobject. */
# elif LNX_VER >= LNX_MK_VER(2,6,21)
LNX_PTR_T uPtrHolderDir; /**< Points to struct kobject. */
# endif
# if LNX_VER >= LNX_MK_VER(2,6,13)
LNX_PTR_T uPtrVersion; /**< String pointers. */
LNX_PTR_T uPtrSrcVersion; /**< String pointers. */
# endif
# else
# if LNX_VER >= LNX_MK_VER(2,6,7)
LNX_PTR_T uPtrMkObj;
# endif
# if LNX_VER >= LNX_MK_VER(2,6,10)
LNX_PTR_T uPtrParamsKobject;
# endif
# endif
/** @name Exported Symbols
* @{ */
# if LNX_VER < LNX_MK_VER(2,5,67)
LNX_PTR_T uPtrSymsNext, uPtrSymsPrev, uPtrSymsOwner;
# if LNX_VER >= LNX_MK_VER(2,5,55)
int32_t syms_gplonly;
uint32_t num_syms;
# else
uint32_t num_syms;
PAD32ON64(1)
# endif
# endif
LNX_PTR_T uPtrSyms; /**< Array of struct kernel_symbol. */
# if LNX_VER >= LNX_MK_VER(2,5,67)
uint32_t num_syms;
PAD32ON64(1)
# endif
# if LNX_VER >= LNX_MK_VER(2,5,60)
LNX_PTR_T uPtrCrcs; /**< unsigned long array */
# endif
/** @} */
/** @name GPL Symbols
* @since 2.5.55
* @{ */
# if LNX_VER >= LNX_MK_VER(2,5,55)
# if LNX_VER < LNX_MK_VER(2,5,67)
LNX_PTR_T uPtrGplSymsNext, uPtrGplSymsPrev, uPtrGplSymsOwner;
# if LNX_VER >= LNX_MK_VER(2,5,55)
int32_t gpl_syms_gplonly;
uint32_t num_gpl_syms;
# else
uint32_t num_gpl_syms;
PAD32ON64(2)
# endif
# endif
LNX_PTR_T uPtrGplSyms; /**< Array of struct kernel_symbol. */
# if LNX_VER >= LNX_MK_VER(2,5,67)
uint32_t num_gpl_syms;
PAD32ON64(2)
# endif
# if LNX_VER >= LNX_MK_VER(2,5,60)
LNX_PTR_T uPtrGplCrcs; /**< unsigned long array */
# endif
# endif /* > 2.5.55 */
/** @} */
/** @name Unused Exported Symbols
* @since 2.6.18
* @{ */
# if LNX_VER >= LNX_MK_VER(2,6,18)
LNX_PTR_T uPtrUnusedSyms; /**< Array of struct kernel_symbol. */
uint32_t num_unused_syms;
PAD32ON64(4)
LNX_PTR_T uPtrUnusedCrcs; /**< unsigned long array */
# endif
/** @} */
/** @name Unused GPL Symbols
* @since 2.6.18
* @{ */
# if LNX_VER >= LNX_MK_VER(2,6,18)
LNX_PTR_T uPtrUnusedGplSyms; /**< Array of struct kernel_symbol. */
uint32_t num_unused_gpl_syms;
PAD32ON64(5)
LNX_PTR_T uPtrUnusedGplCrcs; /**< unsigned long array */
# endif
/** @} */
/** @name Future GPL Symbols
* @since 2.6.17
* @{ */
# if LNX_VER >= LNX_MK_VER(2,6,17)
LNX_PTR_T uPtrGplFutureSyms; /**< Array of struct kernel_symbol. */
uint32_t num_gpl_future_syms;
PAD32ON64(3)
LNX_PTR_T uPtrGplFutureCrcs; /**< unsigned long array */
# endif
/** @} */
/** @name Exception table.
* @{ */
# if LNX_VER < LNX_MK_VER(2,5,67)
LNX_PTR_T uPtrXcptTabNext, uPtrXcptTabPrev;
# endif
uint32_t num_exentries;
PAD32ON64(6)
LNX_PTR_T uPtrEntries; /**< struct exception_table_entry array. */
/** @} */
/*
* Hopefully less spaghetti from here on...
*/
LNX_PTR_T pfnInit;
LNX_PTR_T uPtrModuleInit;
LNX_PTR_T uPtrModuleCore;
LNX_ULONG_T cbInit;
LNX_ULONG_T cbCore;
# if LNX_VER >= LNX_MK_VER(2,5,74)
LNX_ULONG_T cbInitText;
LNX_ULONG_T cbCoreText;
# endif
# if LNX_VER >= LNX_MK_VER(2,6,18)
LNX_PTR_T uPtrUnwindInfo;
# endif
#else
uint32_t structure_size;
#endif
} RT_CONCAT(LNXKMODULE,LNX_SUFFIX);
# if LNX_VER == LNX_MK_VER(2,6,24) && LNX_64BIT
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), uPtrParamAttrs, 160);
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), num_syms, 208);
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), num_gpl_syms, 232);
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), num_unused_syms, 256);
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), num_unused_gpl_syms, 280);
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), num_gpl_future_syms, 304);
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), num_exentries, 320);
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), uPtrModuleCore, 352);
AssertCompileMemberOffset(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), uPtrUnwindInfo, 392);
#endif
/**
* Version specific module processing code.
*/
static uint64_t RT_CONCAT(dbgDiggerLinuxLoadModule,LNX_SUFFIX)(PDBGDIGGERLINUX pThis, PUVM pUVM, PDBGFADDRESS pAddrModule)
{
RT_CONCAT(LNXKMODULE,LNX_SUFFIX) Module;
int rc = DBGFR3MemRead(pUVM, 0, DBGFR3AddrSub(pAddrModule, RT_UOFFSETOF(RT_CONCAT(LNXKMODULE,LNX_SUFFIX), uPtrNext)),
&Module, sizeof(Module));
if (RT_FAILURE(rc))
{
LogRelFunc(("Failed to read module structure at %#RX64: %Rrc\n", pAddrModule->FlatPtr, rc));
return 0;
}
/*
* Check the module name.
*/
#if LNX_VER >= LNX_MK_VER(2,5,48)
const char *pszName = Module.name;
size_t const cbName = sizeof(Module.name);
#else
#endif
if ( RTStrNLen(pszName, cbName) >= cbName
|| RT_FAILURE(RTStrValidateEncoding(pszName))
|| *pszName == '\0')
{
LogRelFunc(("%#RX64: Bad name: %.*Rhxs\n", pAddrModule->FlatPtr, (int)cbName, pszName));
return 0;
}
/*
* Create a simple module for it.
*/
LogRelFunc((" %#RX64: %#RX64 LB %#RX64 %s\n", pAddrModule->FlatPtr, Module.uPtrModuleCore, Module.cbCore, pszName));
RTDBGMOD hDbgMod;
rc = RTDbgModCreate(&hDbgMod, pszName, Module.cbCore, 0 /*fFlags*/);
if (RT_SUCCESS(rc))
{
rc = RTDbgModSetTag(hDbgMod, DIG_LNX_MOD_TAG);
if (RT_SUCCESS(rc))
{
RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
rc = RTDbgAsModuleLink(hAs, hDbgMod, Module.uPtrModuleCore, RTDBGASLINK_FLAGS_REPLACE /*fFlags*/);
RTDbgAsRelease(hAs);
}
else
LogRel(("DbgDiggerOs2: RTDbgModSetTag failed: %Rrc\n", rc));
RTDbgModRelease(hDbgMod);
}
RT_NOREF(pThis);
return Module.uPtrNext;
}
#undef LNX_VER
#undef LNX_SUFFIX
#undef LNX_ULONG_T
#undef PAD32ON64
|