diff options
Diffstat (limited to 'src/VBox/Additions/common/testcase/tstPageFusion.cpp')
| -rw-r--r-- | src/VBox/Additions/common/testcase/tstPageFusion.cpp | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/testcase/tstPageFusion.cpp b/src/VBox/Additions/common/testcase/tstPageFusion.cpp new file mode 100644 index 00000000..264d887a --- /dev/null +++ b/src/VBox/Additions/common/testcase/tstPageFusion.cpp @@ -0,0 +1,389 @@ +/* $Id: tstPageFusion.cpp $ */ +/** @file + * VBoxService - Guest page sharing testcase + */ + +/* + * Copyright (C) 2006-2023 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>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/assert.h> +#include <iprt/asm.h> +#include <iprt/mem.h> +#include <iprt/messages.h> +#include <iprt/stream.h> +#include <iprt/string.h> +#include <iprt/initterm.h> +#include <VBox/VBoxGuestLib.h> +#include <iprt/x86.h> +#include <stdio.h> + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ + +#ifdef RT_OS_WINDOWS +#include <iprt/win/windows.h> +#include <process.h> /* Needed for file version information. */ +#include <tlhelp32.h> +#include <psapi.h> +#include <winternl.h> + +#define SystemModuleInformation 11 + +typedef struct _RTL_PROCESS_MODULE_INFORMATION +{ + ULONG Section; + PVOID MappedBase; + PVOID ImageBase; + ULONG ImageSize; + ULONG Flags; + USHORT LoadOrderIndex; + USHORT InitOrderIndex; + USHORT LoadCount; + USHORT OffsetToFileName; + CHAR FullPathName[256]; +} RTL_PROCESS_MODULE_INFORMATION, *PRTL_PROCESS_MODULE_INFORMATION; + +typedef struct _RTL_PROCESS_MODULES +{ + ULONG NumberOfModules; + RTL_PROCESS_MODULE_INFORMATION Modules[1]; +} RTL_PROCESS_MODULES, *PRTL_PROCESS_MODULES; + +typedef NTSTATUS (WINAPI *PFNZWQUERYSYSTEMINFORMATION)(ULONG, PVOID, ULONG, PULONG); +static PFNZWQUERYSYSTEMINFORMATION ZwQuerySystemInformation = NULL; +static HMODULE hNtdll = 0; + +#define PAGE_STATE_INVALID 0 +#define PAGE_STATE_SHARED 1 +#define PAGE_STATE_READ_WRITE 2 +#define PAGE_STATE_READ_ONLY 3 +#define PAGE_STATE_NOT_PRESENT 4 + +/* Page counters. */ +static unsigned cNotPresentPages = 0; +static unsigned cWritablePages = 0; +static unsigned cSharedPages = 0; +static unsigned cPrivatePages = 0; + +/** + * Registers a new module with the VMM + * @param pModule Module ptr + */ +void VBoxServicePageSharingCheckModule(MODULEENTRY32 *pModule) +{ + DWORD dwModuleSize = pModule->modBaseSize; + BYTE *pBaseAddress = pModule->modBaseAddr; + bool fFirstLine = true; + unsigned uPageState, uLastPageState; + bool fLastWritable = false; + BYTE *pLastBaseAddress = pBaseAddress; + + uPageState = uLastPageState = PAGE_STATE_INVALID; + + printf("Check module %s base %p size %x\n", pModule->szModule, pBaseAddress, dwModuleSize); + do + { + bool fShared; + uint64_t uPageFlags; + +#ifdef RT_ARCH_X86 + int rc = VbglR3PageIsShared((uint32_t)pLastBaseAddress, &fShared, &uPageFlags); +#else + int rc = VbglR3PageIsShared((RTGCPTR)pLastBaseAddress, &fShared, &uPageFlags); +#endif + if (RT_FAILURE(rc)) + printf("VbglR3PageIsShared %p failed with %d\n", pLastBaseAddress, rc); + + if (RT_SUCCESS(rc)) + { + if (uPageFlags & X86_PTE_P) + { + if (uPageFlags & X86_PTE_RW) + { + cWritablePages++; + uPageState = PAGE_STATE_READ_WRITE; + } + else + if (fShared) + { + cSharedPages++; + uPageState = PAGE_STATE_SHARED; + } + else + { + cPrivatePages++; + uPageState = PAGE_STATE_READ_ONLY; + } + } + else + { + cNotPresentPages++; + uPageState = PAGE_STATE_NOT_PRESENT; + } + + if ( !fFirstLine + && uPageState != uLastPageState) + { + printf("0x%p\n", pLastBaseAddress + 0xfff); + } + + if (uPageState != uLastPageState) + { + switch (uPageState) + { + case PAGE_STATE_READ_WRITE: + printf("%s RW 0x%p - ", pModule->szModule, pBaseAddress); + break; + case PAGE_STATE_SHARED: + printf("%s SHARED 0x%p - ", pModule->szModule, pBaseAddress); + break; + case PAGE_STATE_READ_ONLY: + printf("%s PRIV 0x%p - ", pModule->szModule, pBaseAddress); + break; + case PAGE_STATE_NOT_PRESENT: + printf("%s NP 0x%p - ", pModule->szModule, pBaseAddress); + break; + } + + fFirstLine = false; + } + uLastPageState = uPageState; + } + else + if (!fFirstLine) + { + printf("0x%p\n", pLastBaseAddress + 0xfff); + fFirstLine = true; + } + + if (dwModuleSize > PAGE_SIZE) + dwModuleSize -= PAGE_SIZE; + else + dwModuleSize = 0; + + pLastBaseAddress = pBaseAddress; + pBaseAddress += PAGE_SIZE; + } + while (dwModuleSize); + + printf("0x%p\n", pLastBaseAddress + 0xfff); + return; +} + +/** + * Inspect all loaded modules for the specified process + * @param dwProcessId Process id + */ +void VBoxServicePageSharingInspectModules(DWORD dwProcessId) +{ + HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, dwProcessId); + if (hSnapshot == INVALID_HANDLE_VALUE) + { + printf("VBoxServicePageSharingInspectModules: CreateToolhelp32Snapshot failed with %d\n", GetLastError()); + return; + } + + printf("VBoxServicePageSharingInspectModules\n"); + + MODULEENTRY32 ModuleInfo; + BOOL bRet; + + ModuleInfo.dwSize = sizeof(ModuleInfo); + bRet = Module32First(hSnapshot, &ModuleInfo); + do + { + /** @todo when changing this make sure VBoxService.exe is excluded! */ + char *pszDot = strrchr(ModuleInfo.szModule, '.'); + if ( pszDot + && (pszDot[1] == 'e' || pszDot[1] == 'E')) + continue; /* ignore executables for now. */ + + VBoxServicePageSharingCheckModule(&ModuleInfo); + } + while (Module32Next(hSnapshot, &ModuleInfo)); + + CloseHandle(hSnapshot); +} + +/** + * Inspect all running processes for executables and dlls that might be worth sharing + * with other VMs. + * + */ +void VBoxServicePageSharingInspectGuest() +{ + VBoxServicePageSharingInspectModules(GetCurrentProcessId()); + + printf("\n\nUSER RESULTS\n"); + printf("cNotPresentPages = %d\n", cNotPresentPages); + printf("cWritablePages = %d\n", cWritablePages); + printf("cPrivatePages = %d\n", cPrivatePages); + printf("cSharedPages = %d\n", cSharedPages); + + cNotPresentPages = 0; + cWritablePages = 0; + cPrivatePages = 0; + cSharedPages = 0; + + /* Check all loaded kernel modules. */ + if (ZwQuerySystemInformation) + { + ULONG cbBuffer = 0; + PVOID pBuffer = NULL; + PRTL_PROCESS_MODULES pSystemModules; + + NTSTATUS ret = ZwQuerySystemInformation(SystemModuleInformation, (PVOID)&cbBuffer, 0, &cbBuffer); + if (!cbBuffer) + { + printf("ZwQuerySystemInformation returned length 0\n"); + goto skipkernelmodules; + } + + pBuffer = RTMemAllocZ(cbBuffer); + if (!pBuffer) + goto skipkernelmodules; + + ret = ZwQuerySystemInformation(SystemModuleInformation, pBuffer, cbBuffer, &cbBuffer); + if (ret != 0) + { + printf("ZwQuerySystemInformation returned %x (1)\n", ret); + goto skipkernelmodules; + } + + pSystemModules = (PRTL_PROCESS_MODULES)pBuffer; + for (unsigned i = 0; i < pSystemModules->NumberOfModules; i++) + { + /* User-mode modules seem to have no flags set; skip them as we detected them above. */ + if (pSystemModules->Modules[i].Flags == 0) + continue; + + /* New module; register it. */ + char szFullFilePath[512]; + MODULEENTRY32 ModuleInfo; + + strcpy(ModuleInfo.szModule, &pSystemModules->Modules[i].FullPathName[pSystemModules->Modules[i].OffsetToFileName]); + GetSystemDirectoryA(szFullFilePath, sizeof(szFullFilePath)); + + /* skip \Systemroot\system32 */ + char *lpPath = strchr(&pSystemModules->Modules[i].FullPathName[1], '\\'); + if (!lpPath) + { + printf("Unexpected kernel module name %s\n", pSystemModules->Modules[i].FullPathName); + break; + } + + lpPath = strchr(lpPath+1, '\\'); + if (!lpPath) + { + printf("Unexpected kernel module name %s\n", pSystemModules->Modules[i].FullPathName); + break; + } + + strcat(szFullFilePath, lpPath); + strcpy(ModuleInfo.szExePath, szFullFilePath); + ModuleInfo.modBaseAddr = (BYTE *)pSystemModules->Modules[i].ImageBase; + ModuleInfo.modBaseSize = pSystemModules->Modules[i].ImageSize; + + VBoxServicePageSharingCheckModule(&ModuleInfo); + } +skipkernelmodules: + if (pBuffer) + RTMemFree(pBuffer); + } + printf("\n\nKERNEL RESULTS\n"); + printf("cNotPresentPages = %d\n", cNotPresentPages); + printf("cWritablePages = %d\n", cWritablePages); + printf("cPrivatePages = %d\n", cPrivatePages); + printf("cSharedPages = %d\n", cSharedPages); +} +#else +void VBoxServicePageSharingInspectGuest() +{ + /** @todo other platforms */ +} +#endif + + +/** @copydoc VBOXSERVICE::pfnInit */ +static DECLCALLBACK(int) VBoxServicePageSharingInit(void) +{ + printf("VBoxServicePageSharingInit\n"); + +#ifdef RT_OS_WINDOWS + hNtdll = LoadLibrary("ntdll.dll"); + + if (hNtdll) + ZwQuerySystemInformation = (PFNZWQUERYSYSTEMINFORMATION)GetProcAddress(hNtdll, "ZwQuerySystemInformation"); +#endif + + /** @todo report system name and version */ + /* Never fail here. */ + return VINF_SUCCESS; +} + +static DECLCALLBACK(void) VBoxServicePageSharingTerm(void) +{ + printf("VBoxServicePageSharingTerm\n"); + +#ifdef RT_OS_WINDOWS + if (hNtdll) + FreeLibrary(hNtdll); +#endif + return; +} + +int main(int argc, char **argv) +{ + /* + * Init globals and such. + */ + int rc = RTR3InitExe(argc, &argv, 0); + if (RT_FAILURE(rc)) + return RTMsgInitFailure(rc); + + /* + * Connect to the kernel part before daemonizing so we can fail + * and complain if there is some kind of problem. We need to initialize + * the guest lib *before* we do the pre-init just in case one of services + * needs do to some initial stuff with it. + */ + printf("Calling VbgR3Init()\n"); + rc = VbglR3Init(); + if (RT_FAILURE(rc)) + { + printf("VbglR3Init failed with rc=%Rrc.\n", rc); + return -1; + } + VBoxServicePageSharingInit(); + + VBoxServicePageSharingInspectGuest(); + + VBoxServicePageSharingTerm(); + return 0; +} + |