1 | /* $Id: VBoxServicePageSharing.cpp 46593 2013-06-17 14:32:51Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * VBoxService - Guest page sharing.
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2012 Oracle Corporation
|
---|
8 | *
|
---|
9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
---|
10 | * available from http://www.virtualbox.org. This file is free software;
|
---|
11 | * you can redistribute it and/or modify it under the terms of the GNU
|
---|
12 | * General Public License (GPL) as published by the Free Software
|
---|
13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
---|
14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
---|
15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
---|
16 | */
|
---|
17 |
|
---|
18 |
|
---|
19 | /*******************************************************************************
|
---|
20 | * Header Files *
|
---|
21 | *******************************************************************************/
|
---|
22 | #include <iprt/assert.h>
|
---|
23 | #include <iprt/avl.h>
|
---|
24 | #include <iprt/asm.h>
|
---|
25 | #include <iprt/mem.h>
|
---|
26 | #include <iprt/ldr.h>
|
---|
27 | #include <iprt/process.h>
|
---|
28 | #include <iprt/env.h>
|
---|
29 | #include <iprt/stream.h>
|
---|
30 | #include <iprt/file.h>
|
---|
31 | #include <iprt/string.h>
|
---|
32 | #include <iprt/semaphore.h>
|
---|
33 | #include <iprt/system.h>
|
---|
34 | #include <iprt/thread.h>
|
---|
35 | #include <iprt/time.h>
|
---|
36 | #include <VBox/VBoxGuestLib.h>
|
---|
37 | #include "VBoxServiceInternal.h"
|
---|
38 | #include "VBoxServiceUtils.h"
|
---|
39 |
|
---|
40 |
|
---|
41 | /*******************************************************************************
|
---|
42 | * Global Variables *
|
---|
43 | *******************************************************************************/
|
---|
44 |
|
---|
45 | /** The semaphore we're blocking on. */
|
---|
46 | static RTSEMEVENTMULTI g_PageSharingEvent = NIL_RTSEMEVENTMULTI;
|
---|
47 |
|
---|
48 | #if defined(RT_OS_WINDOWS) && !defined(TARGET_NT4)
|
---|
49 | #include <tlhelp32.h>
|
---|
50 | #include <psapi.h>
|
---|
51 | #include <winternl.h>
|
---|
52 |
|
---|
53 | typedef struct
|
---|
54 | {
|
---|
55 | AVLPVNODECORE Core;
|
---|
56 | HMODULE hModule;
|
---|
57 | char szFileVersion[16];
|
---|
58 | MODULEENTRY32 Info;
|
---|
59 | } KNOWN_MODULE, *PKNOWN_MODULE;
|
---|
60 |
|
---|
61 | #define SystemModuleInformation 11
|
---|
62 |
|
---|
63 | typedef struct _RTL_PROCESS_MODULE_INFORMATION
|
---|
64 | {
|
---|
65 | ULONG Section;
|
---|
66 | PVOID MappedBase;
|
---|
67 | PVOID ImageBase;
|
---|
68 | ULONG ImageSize;
|
---|
69 | ULONG Flags;
|
---|
70 | USHORT LoadOrderIndex;
|
---|
71 | USHORT InitOrderIndex;
|
---|
72 | USHORT LoadCount;
|
---|
73 | USHORT OffsetToFileName;
|
---|
74 | CHAR FullPathName[256];
|
---|
75 | } RTL_PROCESS_MODULE_INFORMATION, *PRTL_PROCESS_MODULE_INFORMATION;
|
---|
76 |
|
---|
77 | typedef struct _RTL_PROCESS_MODULES
|
---|
78 | {
|
---|
79 | ULONG NumberOfModules;
|
---|
80 | RTL_PROCESS_MODULE_INFORMATION Modules[1];
|
---|
81 | } RTL_PROCESS_MODULES, *PRTL_PROCESS_MODULES;
|
---|
82 |
|
---|
83 | typedef NTSTATUS (WINAPI *PFNZWQUERYSYSTEMINFORMATION)(ULONG, PVOID, ULONG, PULONG);
|
---|
84 | static PFNZWQUERYSYSTEMINFORMATION g_pfnZwQuerySystemInformation = NULL;
|
---|
85 |
|
---|
86 |
|
---|
87 | static DECLCALLBACK(int) VBoxServicePageSharingEmptyTreeCallback(PAVLPVNODECORE pNode, void *pvUser);
|
---|
88 |
|
---|
89 | static PAVLPVNODECORE g_pKnownModuleTree = NULL;
|
---|
90 | static uint64_t g_idSession = 0;
|
---|
91 |
|
---|
92 | /**
|
---|
93 | * Registers a new module with the VMM
|
---|
94 | * @param pModule Module ptr
|
---|
95 | * @param fValidateMemory Validate/touch memory pages or not
|
---|
96 | */
|
---|
97 | void VBoxServicePageSharingRegisterModule(PKNOWN_MODULE pModule, bool fValidateMemory)
|
---|
98 | {
|
---|
99 | VMMDEVSHAREDREGIONDESC aRegions[VMMDEVSHAREDREGIONDESC_MAX];
|
---|
100 | DWORD dwModuleSize = pModule->Info.modBaseSize;
|
---|
101 | BYTE *pBaseAddress = pModule->Info.modBaseAddr;
|
---|
102 | DWORD cbVersionSize, dummy;
|
---|
103 | BYTE *pVersionInfo;
|
---|
104 |
|
---|
105 | VBoxServiceVerbose(3, "VBoxServicePageSharingRegisterModule\n");
|
---|
106 |
|
---|
107 | cbVersionSize = GetFileVersionInfoSize(pModule->Info.szExePath, &dummy);
|
---|
108 | if (!cbVersionSize)
|
---|
109 | {
|
---|
110 | VBoxServiceVerbose(3, "VBoxServicePageSharingRegisterModule: GetFileVersionInfoSize failed with %d\n", GetLastError());
|
---|
111 | return;
|
---|
112 | }
|
---|
113 | pVersionInfo = (BYTE *)RTMemAlloc(cbVersionSize);
|
---|
114 | if (!pVersionInfo)
|
---|
115 | return;
|
---|
116 |
|
---|
117 | if (!GetFileVersionInfo(pModule->Info.szExePath, 0, cbVersionSize, pVersionInfo))
|
---|
118 | {
|
---|
119 | VBoxServiceVerbose(3, "VBoxServicePageSharingRegisterModule: GetFileVersionInfo failed with %d\n", GetLastError());
|
---|
120 | goto end;
|
---|
121 | }
|
---|
122 |
|
---|
123 | /* Fetch default code page. */
|
---|
124 | struct LANGANDCODEPAGE {
|
---|
125 | WORD wLanguage;
|
---|
126 | WORD wCodePage;
|
---|
127 | } *lpTranslate;
|
---|
128 |
|
---|
129 | UINT cbTranslate;
|
---|
130 | BOOL ret = VerQueryValue(pVersionInfo, TEXT("\\VarFileInfo\\Translation"), (LPVOID *)&lpTranslate, &cbTranslate);
|
---|
131 | if ( !ret
|
---|
132 | || cbTranslate < 4)
|
---|
133 | {
|
---|
134 | VBoxServiceVerbose(3, "VBoxServicePageSharingRegisterModule: VerQueryValue failed with %d (cb=%d)\n", GetLastError(), cbTranslate);
|
---|
135 | goto end;
|
---|
136 | }
|
---|
137 |
|
---|
138 | unsigned i;
|
---|
139 | UINT cbFileVersion;
|
---|
140 | char *lpszFileVersion;
|
---|
141 | unsigned cTranslationBlocks = cbTranslate/sizeof(struct LANGANDCODEPAGE);
|
---|
142 |
|
---|
143 | for(i = 0; i < cTranslationBlocks; i++)
|
---|
144 | {
|
---|
145 | /* Fetch file version string. */
|
---|
146 | char szFileVersionLocation[256];
|
---|
147 |
|
---|
148 | sprintf(szFileVersionLocation, TEXT("\\StringFileInfo\\%04x%04x\\FileVersion"), lpTranslate[i].wLanguage, lpTranslate[i].wCodePage);
|
---|
149 | ret = VerQueryValue(pVersionInfo, szFileVersionLocation, (LPVOID *)&lpszFileVersion, &cbFileVersion);
|
---|
150 | if (ret)
|
---|
151 | break;
|
---|
152 | }
|
---|
153 | if (i == cTranslationBlocks)
|
---|
154 | {
|
---|
155 | VBoxServiceVerbose(3, "VBoxServicePageSharingRegisterModule: no file version found!\n");
|
---|
156 | goto end;
|
---|
157 | }
|
---|
158 |
|
---|
159 | _snprintf(pModule->szFileVersion, sizeof(pModule->szFileVersion), "%s", lpszFileVersion);
|
---|
160 | pModule->szFileVersion[RT_ELEMENTS(pModule->szFileVersion) - 1] = 0;
|
---|
161 |
|
---|
162 | unsigned idxRegion = 0;
|
---|
163 |
|
---|
164 | if (fValidateMemory)
|
---|
165 | {
|
---|
166 | do
|
---|
167 | {
|
---|
168 | MEMORY_BASIC_INFORMATION MemInfo;
|
---|
169 |
|
---|
170 | SIZE_T ret = VirtualQuery(pBaseAddress, &MemInfo, sizeof(MemInfo));
|
---|
171 | Assert(ret);
|
---|
172 | if (!ret)
|
---|
173 | {
|
---|
174 | VBoxServiceVerbose(3, "VBoxServicePageSharingRegisterModule: VirtualQueryEx failed with %d\n", GetLastError());
|
---|
175 | break;
|
---|
176 | }
|
---|
177 |
|
---|
178 | if ( MemInfo.State == MEM_COMMIT
|
---|
179 | && MemInfo.Type == MEM_IMAGE)
|
---|
180 | {
|
---|
181 | switch (MemInfo.Protect)
|
---|
182 | {
|
---|
183 | case PAGE_EXECUTE:
|
---|
184 | case PAGE_EXECUTE_READ:
|
---|
185 | case PAGE_READONLY:
|
---|
186 | {
|
---|
187 | char *pRegion = (char *)MemInfo.BaseAddress;
|
---|
188 |
|
---|
189 | /* Skip the first region as it only contains the image file header. */
|
---|
190 | if (pRegion != (char *)pModule->Info.modBaseAddr)
|
---|
191 | {
|
---|
192 | /* Touch all pages. */
|
---|
193 | while (pRegion < (char *)MemInfo.BaseAddress + MemInfo.RegionSize)
|
---|
194 | {
|
---|
195 | /* Try to trick the optimizer to leave the page touching code in place. */
|
---|
196 | ASMProbeReadByte(pRegion);
|
---|
197 | pRegion += PAGE_SIZE;
|
---|
198 | }
|
---|
199 | }
|
---|
200 | #ifdef RT_ARCH_X86
|
---|
201 | aRegions[idxRegion].GCRegionAddr = (RTGCPTR32)MemInfo.BaseAddress;
|
---|
202 | #else
|
---|
203 | aRegions[idxRegion].GCRegionAddr = (RTGCPTR64)MemInfo.BaseAddress;
|
---|
204 | #endif
|
---|
205 | aRegions[idxRegion].cbRegion = MemInfo.RegionSize;
|
---|
206 | idxRegion++;
|
---|
207 |
|
---|
208 | break;
|
---|
209 | }
|
---|
210 |
|
---|
211 | default:
|
---|
212 | break; /* ignore */
|
---|
213 | }
|
---|
214 | }
|
---|
215 |
|
---|
216 | pBaseAddress = (BYTE *)MemInfo.BaseAddress + MemInfo.RegionSize;
|
---|
217 | if (dwModuleSize > MemInfo.RegionSize)
|
---|
218 | {
|
---|
219 | dwModuleSize -= MemInfo.RegionSize;
|
---|
220 | }
|
---|
221 | else
|
---|
222 | {
|
---|
223 | dwModuleSize = 0;
|
---|
224 | break;
|
---|
225 | }
|
---|
226 |
|
---|
227 | if (idxRegion >= RT_ELEMENTS(aRegions))
|
---|
228 | break; /* out of room */
|
---|
229 | }
|
---|
230 | while (dwModuleSize);
|
---|
231 | }
|
---|
232 | else
|
---|
233 | {
|
---|
234 | /* We can't probe kernel memory ranges, so pretend it's one big region. */
|
---|
235 | #ifdef RT_ARCH_X86
|
---|
236 | aRegions[idxRegion].GCRegionAddr = (RTGCPTR32)pBaseAddress;
|
---|
237 | #else
|
---|
238 | aRegions[idxRegion].GCRegionAddr = (RTGCPTR64)pBaseAddress;
|
---|
239 | #endif
|
---|
240 | aRegions[idxRegion].cbRegion = dwModuleSize;
|
---|
241 | idxRegion++;
|
---|
242 | }
|
---|
243 | VBoxServiceVerbose(3, "VBoxServicePageSharingRegisterModule: VbglR3RegisterSharedModule %s %s base=%p size=%x cregions=%d\n", pModule->Info.szModule, pModule->szFileVersion, pModule->Info.modBaseAddr, pModule->Info.modBaseSize, idxRegion);
|
---|
244 | int rc = VbglR3RegisterSharedModule(pModule->Info.szModule, pModule->szFileVersion, (uintptr_t)pModule->Info.modBaseAddr,
|
---|
245 | pModule->Info.modBaseSize, idxRegion, aRegions);
|
---|
246 | if (RT_FAILURE(rc))
|
---|
247 | VBoxServiceVerbose(3, "VBoxServicePageSharingRegisterModule: VbglR3RegisterSharedModule failed with %Rrc\n", rc);
|
---|
248 |
|
---|
249 | end:
|
---|
250 | RTMemFree(pVersionInfo);
|
---|
251 | return;
|
---|
252 | }
|
---|
253 |
|
---|
254 | /**
|
---|
255 | * Inspect all loaded modules for the specified process
|
---|
256 | * @param dwProcessId Process id
|
---|
257 | */
|
---|
258 | void VBoxServicePageSharingInspectModules(DWORD dwProcessId, PAVLPVNODECORE *ppNewTree)
|
---|
259 | {
|
---|
260 | HANDLE hProcess, hSnapshot;
|
---|
261 |
|
---|
262 | /* Get a list of all the modules in this process. */
|
---|
263 | hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,
|
---|
264 | FALSE /* no child process handle inheritance */, dwProcessId);
|
---|
265 | if (hProcess == NULL)
|
---|
266 | {
|
---|
267 | VBoxServiceVerbose(3, "VBoxServicePageSharingInspectModules: OpenProcess %x failed with %d\n", dwProcessId, GetLastError());
|
---|
268 | return;
|
---|
269 | }
|
---|
270 |
|
---|
271 | hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, dwProcessId);
|
---|
272 | if (hSnapshot == INVALID_HANDLE_VALUE)
|
---|
273 | {
|
---|
274 | VBoxServiceVerbose(3, "VBoxServicePageSharingInspectModules: CreateToolhelp32Snapshot failed with %d\n", GetLastError());
|
---|
275 | CloseHandle(hProcess);
|
---|
276 | return;
|
---|
277 | }
|
---|
278 |
|
---|
279 | VBoxServiceVerbose(3, "VBoxServicePageSharingInspectModules\n");
|
---|
280 |
|
---|
281 | MODULEENTRY32 ModuleInfo;
|
---|
282 | BOOL bRet;
|
---|
283 |
|
---|
284 | ModuleInfo.dwSize = sizeof(ModuleInfo);
|
---|
285 | bRet = Module32First(hSnapshot, &ModuleInfo);
|
---|
286 | do
|
---|
287 | {
|
---|
288 | /** @todo when changing this make sure VBoxService.exe is excluded! */
|
---|
289 | char *pszDot = strrchr(ModuleInfo.szModule, '.');
|
---|
290 | if ( pszDot
|
---|
291 | && (pszDot[1] == 'e' || pszDot[1] == 'E'))
|
---|
292 | continue; /* ignore executables for now. */
|
---|
293 |
|
---|
294 | /* Found it before? */
|
---|
295 | PAVLPVNODECORE pRec = RTAvlPVGet(ppNewTree, ModuleInfo.modBaseAddr);
|
---|
296 | if (!pRec)
|
---|
297 | {
|
---|
298 | pRec = RTAvlPVRemove(&g_pKnownModuleTree, ModuleInfo.modBaseAddr);
|
---|
299 | if (!pRec)
|
---|
300 | {
|
---|
301 | /* New module; register it. */
|
---|
302 | PKNOWN_MODULE pModule = (PKNOWN_MODULE)RTMemAllocZ(sizeof(*pModule));
|
---|
303 | Assert(pModule);
|
---|
304 | if (!pModule)
|
---|
305 | break;
|
---|
306 |
|
---|
307 | pModule->Info = ModuleInfo;
|
---|
308 | pModule->Core.Key = ModuleInfo.modBaseAddr;
|
---|
309 | pModule->hModule = LoadLibraryEx(ModuleInfo.szExePath, 0, DONT_RESOLVE_DLL_REFERENCES);
|
---|
310 | if (pModule->hModule)
|
---|
311 | VBoxServicePageSharingRegisterModule(pModule, true /* validate pages */);
|
---|
312 |
|
---|
313 | VBoxServiceVerbose(3, "\n\n MODULE NAME: %s", ModuleInfo.szModule );
|
---|
314 | VBoxServiceVerbose(3, "\n executable = %s", ModuleInfo.szExePath );
|
---|
315 | VBoxServiceVerbose(3, "\n process ID = 0x%08X", ModuleInfo.th32ProcessID );
|
---|
316 | VBoxServiceVerbose(3, "\n base address = 0x%08X", (DWORD) ModuleInfo.modBaseAddr );
|
---|
317 | VBoxServiceVerbose(3, "\n base size = %d", ModuleInfo.modBaseSize );
|
---|
318 |
|
---|
319 | pRec = &pModule->Core;
|
---|
320 | }
|
---|
321 | bool ret = RTAvlPVInsert(ppNewTree, pRec);
|
---|
322 | Assert(ret); NOREF(ret);
|
---|
323 | }
|
---|
324 | }
|
---|
325 | while (Module32Next(hSnapshot, &ModuleInfo));
|
---|
326 |
|
---|
327 | CloseHandle(hSnapshot);
|
---|
328 | CloseHandle(hProcess);
|
---|
329 | }
|
---|
330 |
|
---|
331 | /**
|
---|
332 | * Inspect all running processes for executables and dlls that might be worth sharing
|
---|
333 | * with other VMs.
|
---|
334 | *
|
---|
335 | */
|
---|
336 | void VBoxServicePageSharingInspectGuest()
|
---|
337 | {
|
---|
338 | HANDLE hSnapshot;
|
---|
339 | PAVLPVNODECORE pNewTree = NULL;
|
---|
340 | DWORD dwProcessId = GetCurrentProcessId();
|
---|
341 |
|
---|
342 | VBoxServiceVerbose(3, "VBoxServicePageSharingInspectGuest\n");
|
---|
343 |
|
---|
344 | hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
|
---|
345 | if (hSnapshot == INVALID_HANDLE_VALUE)
|
---|
346 | {
|
---|
347 | VBoxServiceVerbose(3, "VBoxServicePageSharingInspectGuest: CreateToolhelp32Snapshot failed with %d\n", GetLastError());
|
---|
348 | return;
|
---|
349 | }
|
---|
350 |
|
---|
351 | /* Check loaded modules for all running processes. */
|
---|
352 | PROCESSENTRY32 ProcessInfo;
|
---|
353 |
|
---|
354 | ProcessInfo.dwSize = sizeof(ProcessInfo);
|
---|
355 | Process32First(hSnapshot, &ProcessInfo);
|
---|
356 |
|
---|
357 | do
|
---|
358 | {
|
---|
359 | /* Skip our own process. */
|
---|
360 | if (ProcessInfo.th32ProcessID != dwProcessId)
|
---|
361 | VBoxServicePageSharingInspectModules(ProcessInfo.th32ProcessID, &pNewTree);
|
---|
362 | }
|
---|
363 | while (Process32Next(hSnapshot, &ProcessInfo));
|
---|
364 |
|
---|
365 | CloseHandle(hSnapshot);
|
---|
366 |
|
---|
367 | /* Check all loaded kernel modules. */
|
---|
368 | if (g_pfnZwQuerySystemInformation)
|
---|
369 | {
|
---|
370 | ULONG cbBuffer = 0;
|
---|
371 | PVOID pBuffer = NULL;
|
---|
372 | PRTL_PROCESS_MODULES pSystemModules;
|
---|
373 |
|
---|
374 | NTSTATUS ret = g_pfnZwQuerySystemInformation(SystemModuleInformation, (PVOID)&cbBuffer, 0, &cbBuffer);
|
---|
375 | if (!cbBuffer)
|
---|
376 | {
|
---|
377 | VBoxServiceVerbose(1, "ZwQuerySystemInformation returned length 0\n");
|
---|
378 | goto skipkernelmodules;
|
---|
379 | }
|
---|
380 |
|
---|
381 | pBuffer = RTMemAllocZ(cbBuffer);
|
---|
382 | if (!pBuffer)
|
---|
383 | goto skipkernelmodules;
|
---|
384 |
|
---|
385 | ret = g_pfnZwQuerySystemInformation(SystemModuleInformation, pBuffer, cbBuffer, &cbBuffer);
|
---|
386 | if (ret != STATUS_SUCCESS)
|
---|
387 | {
|
---|
388 | VBoxServiceVerbose(1, "ZwQuerySystemInformation returned %x (1)\n", ret);
|
---|
389 | goto skipkernelmodules;
|
---|
390 | }
|
---|
391 |
|
---|
392 | pSystemModules = (PRTL_PROCESS_MODULES)pBuffer;
|
---|
393 | for (unsigned i = 0; i < pSystemModules->NumberOfModules; i++)
|
---|
394 | {
|
---|
395 | VBoxServiceVerbose(4, "\n\n KERNEL MODULE NAME: %s", pSystemModules->Modules[i].FullPathName[pSystemModules->Modules[i].OffsetToFileName] );
|
---|
396 | VBoxServiceVerbose(4, "\n executable = %s", pSystemModules->Modules[i].FullPathName );
|
---|
397 | VBoxServiceVerbose(4, "\n flags = 0x%08X\n", pSystemModules->Modules[i].Flags);
|
---|
398 |
|
---|
399 | /* User-mode modules seem to have no flags set; skip them as we detected them above. */
|
---|
400 | if (pSystemModules->Modules[i].Flags == 0)
|
---|
401 | continue;
|
---|
402 |
|
---|
403 | /* Found it before? */
|
---|
404 | PAVLPVNODECORE pRec = RTAvlPVGet(&pNewTree, pSystemModules->Modules[i].ImageBase);
|
---|
405 | if (!pRec)
|
---|
406 | {
|
---|
407 | pRec = RTAvlPVRemove(&g_pKnownModuleTree, pSystemModules->Modules[i].ImageBase);
|
---|
408 | if (!pRec)
|
---|
409 | {
|
---|
410 | /* New module; register it. */
|
---|
411 | char szFullFilePath[512];
|
---|
412 | PKNOWN_MODULE pModule = (PKNOWN_MODULE)RTMemAllocZ(sizeof(*pModule));
|
---|
413 | Assert(pModule);
|
---|
414 | if (!pModule)
|
---|
415 | break;
|
---|
416 |
|
---|
417 | strcpy(pModule->Info.szModule, &pSystemModules->Modules[i].FullPathName[pSystemModules->Modules[i].OffsetToFileName]);
|
---|
418 | GetSystemDirectoryA(szFullFilePath, sizeof(szFullFilePath));
|
---|
419 |
|
---|
420 | /* skip \Systemroot\system32 */
|
---|
421 | char *lpPath = strchr(&pSystemModules->Modules[i].FullPathName[1], '\\');
|
---|
422 | if (!lpPath)
|
---|
423 | {
|
---|
424 | /* Seen just file names in XP; try to locate the file in the system32 and system32\drivers directories. */
|
---|
425 | strcat(szFullFilePath, "\\");
|
---|
426 | strcat(szFullFilePath, pSystemModules->Modules[i].FullPathName);
|
---|
427 | VBoxServiceVerbose(3, "Unexpected kernel module name try %s\n", szFullFilePath);
|
---|
428 | if (RTFileExists(szFullFilePath) == false)
|
---|
429 | {
|
---|
430 | GetSystemDirectoryA(szFullFilePath, sizeof(szFullFilePath));
|
---|
431 | strcat(szFullFilePath, "\\drivers\\");
|
---|
432 | strcat(szFullFilePath, pSystemModules->Modules[i].FullPathName);
|
---|
433 | VBoxServiceVerbose(3, "Unexpected kernel module name try %s\n", szFullFilePath);
|
---|
434 | if (RTFileExists(szFullFilePath) == false)
|
---|
435 | {
|
---|
436 | VBoxServiceVerbose(1, "Unexpected kernel module name %s\n", pSystemModules->Modules[i].FullPathName);
|
---|
437 | RTMemFree(pModule);
|
---|
438 | continue;
|
---|
439 | }
|
---|
440 | }
|
---|
441 | }
|
---|
442 | else
|
---|
443 | {
|
---|
444 | lpPath = strchr(lpPath+1, '\\');
|
---|
445 | if (!lpPath)
|
---|
446 | {
|
---|
447 | VBoxServiceVerbose(1, "Unexpected kernel module name %s (2)\n", pSystemModules->Modules[i].FullPathName);
|
---|
448 | RTMemFree(pModule);
|
---|
449 | continue;
|
---|
450 | }
|
---|
451 |
|
---|
452 | strcat(szFullFilePath, lpPath);
|
---|
453 | }
|
---|
454 |
|
---|
455 | strcpy(pModule->Info.szExePath, szFullFilePath);
|
---|
456 | pModule->Info.modBaseAddr = (BYTE *)pSystemModules->Modules[i].ImageBase;
|
---|
457 | pModule->Info.modBaseSize = pSystemModules->Modules[i].ImageSize;
|
---|
458 |
|
---|
459 | pModule->Core.Key = pSystemModules->Modules[i].ImageBase;
|
---|
460 | VBoxServicePageSharingRegisterModule(pModule, false /* don't check memory pages */);
|
---|
461 |
|
---|
462 | VBoxServiceVerbose(3, "\n\n KERNEL MODULE NAME: %s", pModule->Info.szModule );
|
---|
463 | VBoxServiceVerbose(3, "\n executable = %s", pModule->Info.szExePath );
|
---|
464 | VBoxServiceVerbose(3, "\n base address = 0x%08X", (DWORD) pModule->Info.modBaseAddr );
|
---|
465 | VBoxServiceVerbose(3, "\n flags = 0x%08X", pSystemModules->Modules[i].Flags);
|
---|
466 | VBoxServiceVerbose(3, "\n base size = %d", pModule->Info.modBaseSize );
|
---|
467 |
|
---|
468 | pRec = &pModule->Core;
|
---|
469 | }
|
---|
470 | bool ret = RTAvlPVInsert(&pNewTree, pRec);
|
---|
471 | Assert(ret); NOREF(ret);
|
---|
472 | }
|
---|
473 | }
|
---|
474 | skipkernelmodules:
|
---|
475 | if (pBuffer)
|
---|
476 | RTMemFree(pBuffer);
|
---|
477 | }
|
---|
478 |
|
---|
479 | /* Delete leftover modules in the old tree. */
|
---|
480 | RTAvlPVDestroy(&g_pKnownModuleTree, VBoxServicePageSharingEmptyTreeCallback, NULL);
|
---|
481 |
|
---|
482 | /* Check all registered modules. */
|
---|
483 | VbglR3CheckSharedModules();
|
---|
484 |
|
---|
485 | /* Activate new module tree. */
|
---|
486 | g_pKnownModuleTree = pNewTree;
|
---|
487 | }
|
---|
488 |
|
---|
489 | /**
|
---|
490 | * RTAvlPVDestroy callback.
|
---|
491 | */
|
---|
492 | static DECLCALLBACK(int) VBoxServicePageSharingEmptyTreeCallback(PAVLPVNODECORE pNode, void *pvUser)
|
---|
493 | {
|
---|
494 | PKNOWN_MODULE pModule = (PKNOWN_MODULE)pNode;
|
---|
495 | bool *pfUnregister = (bool *)pvUser;
|
---|
496 |
|
---|
497 | VBoxServiceVerbose(3, "VBoxServicePageSharingEmptyTreeCallback %s %s\n", pModule->Info.szModule, pModule->szFileVersion);
|
---|
498 |
|
---|
499 | /* Dereference module in the hypervisor. */
|
---|
500 | if ( !pfUnregister
|
---|
501 | || *pfUnregister)
|
---|
502 | {
|
---|
503 | int rc = VbglR3UnregisterSharedModule(pModule->Info.szModule, pModule->szFileVersion,
|
---|
504 | (uintptr_t)pModule->Info.modBaseAddr, pModule->Info.modBaseSize);
|
---|
505 | AssertRC(rc);
|
---|
506 | }
|
---|
507 |
|
---|
508 | if (pModule->hModule)
|
---|
509 | FreeLibrary(pModule->hModule);
|
---|
510 | RTMemFree(pNode);
|
---|
511 | return 0;
|
---|
512 | }
|
---|
513 |
|
---|
514 |
|
---|
515 | #elif TARGET_NT4
|
---|
516 | void VBoxServicePageSharingInspectGuest()
|
---|
517 | {
|
---|
518 | /* not implemented */
|
---|
519 | }
|
---|
520 | #else
|
---|
521 | void VBoxServicePageSharingInspectGuest()
|
---|
522 | {
|
---|
523 | /* @todo other platforms */
|
---|
524 | }
|
---|
525 | #endif
|
---|
526 |
|
---|
527 | /** @copydoc VBOXSERVICE::pfnPreInit */
|
---|
528 | static DECLCALLBACK(int) VBoxServicePageSharingPreInit(void)
|
---|
529 | {
|
---|
530 | return VINF_SUCCESS;
|
---|
531 | }
|
---|
532 |
|
---|
533 |
|
---|
534 | /** @copydoc VBOXSERVICE::pfnOption */
|
---|
535 | static DECLCALLBACK(int) VBoxServicePageSharingOption(const char **ppszShort, int argc, char **argv, int *pi)
|
---|
536 | {
|
---|
537 | NOREF(ppszShort);
|
---|
538 | NOREF(argc);
|
---|
539 | NOREF(argv);
|
---|
540 | NOREF(pi);
|
---|
541 |
|
---|
542 | return -1;
|
---|
543 | }
|
---|
544 |
|
---|
545 |
|
---|
546 | /** @copydoc VBOXSERVICE::pfnInit */
|
---|
547 | static DECLCALLBACK(int) VBoxServicePageSharingInit(void)
|
---|
548 | {
|
---|
549 | VBoxServiceVerbose(3, "VBoxServicePageSharingInit\n");
|
---|
550 |
|
---|
551 | int rc = RTSemEventMultiCreate(&g_PageSharingEvent);
|
---|
552 | AssertRCReturn(rc, rc);
|
---|
553 |
|
---|
554 | #if defined(RT_OS_WINDOWS) && !defined(TARGET_NT4)
|
---|
555 | g_pfnZwQuerySystemInformation = (PFNZWQUERYSYSTEMINFORMATION)RTLdrGetSystemSymbol("ntdll.dll", "ZwQuerySystemInformation");
|
---|
556 |
|
---|
557 | rc = VbglR3GetSessionId(&g_idSession);
|
---|
558 | if (RT_FAILURE(rc))
|
---|
559 | {
|
---|
560 | if (rc == VERR_IO_GEN_FAILURE)
|
---|
561 | VBoxServiceVerbose(0, "PageSharing: Page sharing support is not available by the host\n");
|
---|
562 | else
|
---|
563 | VBoxServiceError("VBoxServicePageSharingInit: Failed with rc=%Rrc\n", rc);
|
---|
564 |
|
---|
565 | rc = VERR_SERVICE_DISABLED;
|
---|
566 |
|
---|
567 | RTSemEventMultiDestroy(g_PageSharingEvent);
|
---|
568 | g_PageSharingEvent = NIL_RTSEMEVENTMULTI;
|
---|
569 |
|
---|
570 | }
|
---|
571 | #endif
|
---|
572 |
|
---|
573 | return rc;
|
---|
574 | }
|
---|
575 |
|
---|
576 | /** @copydoc VBOXSERVICE::pfnWorker */
|
---|
577 | DECLCALLBACK(int) VBoxServicePageSharingWorker(bool volatile *pfShutdown)
|
---|
578 | {
|
---|
579 | /*
|
---|
580 | * Tell the control thread that it can continue
|
---|
581 | * spawning services.
|
---|
582 | */
|
---|
583 | RTThreadUserSignal(RTThreadSelf());
|
---|
584 |
|
---|
585 | /*
|
---|
586 | * Now enter the loop retrieving runtime data continuously.
|
---|
587 | */
|
---|
588 | for (;;)
|
---|
589 | {
|
---|
590 | BOOL fEnabled = VbglR3PageSharingIsEnabled();
|
---|
591 |
|
---|
592 | VBoxServiceVerbose(3, "VBoxServicePageSharingWorker: enabled=%d\n", fEnabled);
|
---|
593 |
|
---|
594 | if (fEnabled)
|
---|
595 | VBoxServicePageSharingInspectGuest();
|
---|
596 |
|
---|
597 | /*
|
---|
598 | * Block for a minute.
|
---|
599 | *
|
---|
600 | * The event semaphore takes care of ignoring interruptions and it
|
---|
601 | * allows us to implement service wakeup later.
|
---|
602 | */
|
---|
603 | if (*pfShutdown)
|
---|
604 | break;
|
---|
605 | int rc = RTSemEventMultiWait(g_PageSharingEvent, 60000);
|
---|
606 | if (*pfShutdown)
|
---|
607 | break;
|
---|
608 | if (rc != VERR_TIMEOUT && RT_FAILURE(rc))
|
---|
609 | {
|
---|
610 | VBoxServiceError("VBoxServicePageSharingWorker: RTSemEventMultiWait failed; rc=%Rrc\n", rc);
|
---|
611 | break;
|
---|
612 | }
|
---|
613 | #if defined(RT_OS_WINDOWS) && !defined(TARGET_NT4)
|
---|
614 | uint64_t idNewSession = g_idSession;
|
---|
615 | rc = VbglR3GetSessionId(&idNewSession);
|
---|
616 | AssertRC(rc);
|
---|
617 |
|
---|
618 | if (idNewSession != g_idSession)
|
---|
619 | {
|
---|
620 | bool fUnregister = false;
|
---|
621 |
|
---|
622 | VBoxServiceVerbose(3, "VBoxServicePageSharingWorker: VM was restored!!\n");
|
---|
623 | /* The VM was restored, so reregister all modules the next time. */
|
---|
624 | RTAvlPVDestroy(&g_pKnownModuleTree, VBoxServicePageSharingEmptyTreeCallback, &fUnregister);
|
---|
625 | g_pKnownModuleTree = NULL;
|
---|
626 |
|
---|
627 | g_idSession = idNewSession;
|
---|
628 | }
|
---|
629 | #endif
|
---|
630 | }
|
---|
631 |
|
---|
632 | RTSemEventMultiDestroy(g_PageSharingEvent);
|
---|
633 | g_PageSharingEvent = NIL_RTSEMEVENTMULTI;
|
---|
634 |
|
---|
635 | VBoxServiceVerbose(3, "VBoxServicePageSharingWorker: finished thread\n");
|
---|
636 | return 0;
|
---|
637 | }
|
---|
638 |
|
---|
639 | #ifdef RT_OS_WINDOWS
|
---|
640 |
|
---|
641 | /**
|
---|
642 | * This gets control when VBoxService is launched with -pagefusionfork by
|
---|
643 | * VBoxServicePageSharingWorkerProcess().
|
---|
644 | *
|
---|
645 | * @returns RTEXITCODE_SUCCESS.
|
---|
646 | *
|
---|
647 | * @remarks It won't normally return since the parent drops the shutdown hint
|
---|
648 | * via RTProcTerminate().
|
---|
649 | */
|
---|
650 | RTEXITCODE VBoxServicePageSharingInitFork(void)
|
---|
651 | {
|
---|
652 | VBoxServiceVerbose(3, "VBoxServicePageSharingInitFork\n");
|
---|
653 |
|
---|
654 | bool fShutdown = false;
|
---|
655 | VBoxServicePageSharingInit();
|
---|
656 | VBoxServicePageSharingWorker(&fShutdown);
|
---|
657 |
|
---|
658 | return RTEXITCODE_SUCCESS;
|
---|
659 | }
|
---|
660 |
|
---|
661 | /** @copydoc VBOXSERVICE::pfnWorker */
|
---|
662 | DECLCALLBACK(int) VBoxServicePageSharingWorkerProcess(bool volatile *pfShutdown)
|
---|
663 | {
|
---|
664 | RTPROCESS hProcess = NIL_RTPROCESS;
|
---|
665 | int rc;
|
---|
666 |
|
---|
667 | /*
|
---|
668 | * Tell the control thread that it can continue
|
---|
669 | * spawning services.
|
---|
670 | */
|
---|
671 | RTThreadUserSignal(RTThreadSelf());
|
---|
672 |
|
---|
673 | /*
|
---|
674 | * Now enter the loop retrieving runtime data continuously.
|
---|
675 | */
|
---|
676 | for (;;)
|
---|
677 | {
|
---|
678 | BOOL fEnabled = VbglR3PageSharingIsEnabled();
|
---|
679 | VBoxServiceVerbose(3, "VBoxServicePageSharingWorkerProcess: enabled=%d\n", fEnabled);
|
---|
680 |
|
---|
681 | /*
|
---|
682 | * Start a 2nd VBoxService process to deal with page fusion as we do
|
---|
683 | * not wish to dummy load dlls into this process. (First load with
|
---|
684 | * DONT_RESOLVE_DLL_REFERENCES, 2nd normal -> dll init routines not called!)
|
---|
685 | */
|
---|
686 | if ( fEnabled
|
---|
687 | && hProcess == NIL_RTPROCESS)
|
---|
688 | {
|
---|
689 | char szExeName[256];
|
---|
690 | char *pszExeName = RTProcGetExecutablePath(szExeName, sizeof(szExeName));
|
---|
691 | if (pszExeName)
|
---|
692 | {
|
---|
693 | char const *papszArgs[3];
|
---|
694 | papszArgs[0] = pszExeName;
|
---|
695 | papszArgs[1] = "pagefusion";
|
---|
696 | papszArgs[2] = NULL;
|
---|
697 | rc = RTProcCreate(pszExeName, papszArgs, RTENV_DEFAULT, 0 /* normal child */, &hProcess);
|
---|
698 | if (RT_FAILURE(rc))
|
---|
699 | VBoxServiceError("VBoxServicePageSharingWorkerProcess: RTProcCreate %s failed; rc=%Rrc\n", pszExeName, rc);
|
---|
700 | }
|
---|
701 | }
|
---|
702 |
|
---|
703 | /*
|
---|
704 | * Block for a minute.
|
---|
705 | *
|
---|
706 | * The event semaphore takes care of ignoring interruptions and it
|
---|
707 | * allows us to implement service wakeup later.
|
---|
708 | */
|
---|
709 | if (*pfShutdown)
|
---|
710 | break;
|
---|
711 | rc = RTSemEventMultiWait(g_PageSharingEvent, 60000);
|
---|
712 | if (*pfShutdown)
|
---|
713 | break;
|
---|
714 | if (rc != VERR_TIMEOUT && RT_FAILURE(rc))
|
---|
715 | {
|
---|
716 | VBoxServiceError("VBoxServicePageSharingWorkerProcess: RTSemEventMultiWait failed; rc=%Rrc\n", rc);
|
---|
717 | break;
|
---|
718 | }
|
---|
719 | }
|
---|
720 |
|
---|
721 | if (hProcess != NIL_RTPROCESS)
|
---|
722 | RTProcTerminate(hProcess);
|
---|
723 |
|
---|
724 | RTSemEventMultiDestroy(g_PageSharingEvent);
|
---|
725 | g_PageSharingEvent = NIL_RTSEMEVENTMULTI;
|
---|
726 |
|
---|
727 | VBoxServiceVerbose(3, "VBoxServicePageSharingWorkerProcess: finished thread\n");
|
---|
728 | return 0;
|
---|
729 | }
|
---|
730 |
|
---|
731 | #endif /* RT_OS_WINDOWS */
|
---|
732 |
|
---|
733 | /** @copydoc VBOXSERVICE::pfnTerm */
|
---|
734 | static DECLCALLBACK(void) VBoxServicePageSharingTerm(void)
|
---|
735 | {
|
---|
736 | VBoxServiceVerbose(3, "VBoxServicePageSharingTerm\n");
|
---|
737 | }
|
---|
738 |
|
---|
739 |
|
---|
740 | /** @copydoc VBOXSERVICE::pfnStop */
|
---|
741 | static DECLCALLBACK(void) VBoxServicePageSharingStop(void)
|
---|
742 | {
|
---|
743 | RTSemEventMultiSignal(g_PageSharingEvent);
|
---|
744 | }
|
---|
745 |
|
---|
746 |
|
---|
747 | /**
|
---|
748 | * The 'pagesharing' service description.
|
---|
749 | */
|
---|
750 | VBOXSERVICE g_PageSharing =
|
---|
751 | {
|
---|
752 | /* pszName. */
|
---|
753 | "pagesharing",
|
---|
754 | /* pszDescription. */
|
---|
755 | "Page Sharing",
|
---|
756 | /* pszUsage. */
|
---|
757 | NULL,
|
---|
758 | /* pszOptions. */
|
---|
759 | NULL,
|
---|
760 | /* methods */
|
---|
761 | VBoxServicePageSharingPreInit,
|
---|
762 | VBoxServicePageSharingOption,
|
---|
763 | VBoxServicePageSharingInit,
|
---|
764 | #ifdef RT_OS_WINDOWS
|
---|
765 | VBoxServicePageSharingWorkerProcess,
|
---|
766 | #else
|
---|
767 | VBoxServicePageSharingWorker,
|
---|
768 | #endif
|
---|
769 | VBoxServicePageSharingStop,
|
---|
770 | VBoxServicePageSharingTerm
|
---|
771 | };
|
---|