VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/SUPDrvInternal.h@ 29826

Last change on this file since 29826 was 29250, checked in by vboxsync, 14 years ago

iprt/asm*.h: split out asm-math.h, don't include asm-*.h from asm.h, don't include asm.h from sup.h. Fixed a couple file headers.
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File size: 21.4 KB
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1/* $Revision: 29250 $ */
2/** @file
3 * VirtualBox Support Driver - Internal header.
4 */
5
6/*
7 * Copyright (C) 2006-2007 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 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27#ifndef ___SUPDrvInternal_h
28#define ___SUPDrvInternal_h
29
30
31/*******************************************************************************
32* Header Files *
33*******************************************************************************/
34#include <VBox/cdefs.h>
35#include <VBox/types.h>
36#include <iprt/assert.h>
37#include <VBox/sup.h>
38#include <iprt/memobj.h>
39#include <iprt/time.h>
40#include <iprt/timer.h>
41#include <iprt/string.h>
42#include <iprt/err.h>
43
44#ifdef SUPDRV_AGNOSTIC
45/* do nothing */
46
47#elif defined(RT_OS_WINDOWS)
48 RT_C_DECLS_BEGIN
49# if (_MSC_VER >= 1400) && !defined(VBOX_WITH_PATCHED_DDK)
50# define _InterlockedExchange _InterlockedExchange_StupidDDKVsCompilerCrap
51# define _InterlockedExchangeAdd _InterlockedExchangeAdd_StupidDDKVsCompilerCrap
52# define _InterlockedCompareExchange _InterlockedCompareExchange_StupidDDKVsCompilerCrap
53# define _InterlockedAddLargeStatistic _InterlockedAddLargeStatistic_StupidDDKVsCompilerCrap
54# define _interlockedbittestandset _interlockedbittestandset_StupidDDKVsCompilerCrap
55# define _interlockedbittestandreset _interlockedbittestandreset_StupidDDKVsCompilerCrap
56# define _interlockedbittestandset64 _interlockedbittestandset64_StupidDDKVsCompilerCrap
57# define _interlockedbittestandreset64 _interlockedbittestandreset64_StupidDDKVsCompilerCrap
58# pragma warning(disable : 4163)
59# include <ntddk.h>
60# pragma warning(default : 4163)
61# undef _InterlockedExchange
62# undef _InterlockedExchangeAdd
63# undef _InterlockedCompareExchange
64# undef _InterlockedAddLargeStatistic
65# undef _interlockedbittestandset
66# undef _interlockedbittestandreset
67# undef _interlockedbittestandset64
68# undef _interlockedbittestandreset64
69# else
70# include <ntddk.h>
71# endif
72# include <memory.h>
73# define memcmp(a,b,c) mymemcmp(a,b,c)
74 int VBOXCALL mymemcmp(const void *, const void *, size_t);
75 RT_C_DECLS_END
76
77#elif defined(RT_OS_LINUX)
78# ifndef AUTOCONF_INCLUDED
79# include <linux/autoconf.h>
80# endif
81# include <linux/version.h>
82# if defined(CONFIG_MODVERSIONS) && !defined(MODVERSIONS)
83# define MODVERSIONS
84# if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 71)
85# include <linux/modversions.h>
86# endif
87# endif
88# if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 0)
89# undef ALIGN
90# endif
91# ifndef KBUILD_STR
92# if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 16)
93# define KBUILD_STR(s) s
94# else
95# define KBUILD_STR(s) #s
96# endif
97# endif
98# include <linux/string.h>
99# include <linux/spinlock.h>
100# include <linux/slab.h>
101# if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
102# include <linux/semaphore.h>
103# else /* older kernels */
104# include <asm/semaphore.h>
105# endif /* older kernels */
106# include <linux/timer.h>
107
108# if 0
109# include <linux/hrtimer.h>
110# define VBOX_HRTIMER
111# endif
112
113#elif defined(RT_OS_DARWIN)
114# include <libkern/libkern.h>
115# include <iprt/string.h>
116
117#elif defined(RT_OS_OS2)
118
119#elif defined(RT_OS_FREEBSD)
120# define memset libkern_memset /** @todo these are just hacks to get it compiling, check out later. */
121# define memcmp libkern_memcmp
122# define strchr libkern_strchr
123# define strrchr libkern_strrchr
124# define ffsl libkern_ffsl
125# define fls libkern_fls
126# define flsl libkern_flsl
127# include <sys/libkern.h>
128# undef memset
129# undef memcmp
130# undef strchr
131# undef strrchr
132# undef ffs
133# undef ffsl
134# undef fls
135# undef flsl
136# include <iprt/string.h>
137
138#elif defined(RT_OS_SOLARIS)
139# include <sys/cmn_err.h>
140# include <iprt/string.h>
141
142#else
143# error "unsupported OS."
144#endif
145
146#include "SUPDrvIOC.h"
147#include "SUPDrvIDC.h"
148
149
150
151/*******************************************************************************
152* Defined Constants And Macros *
153*******************************************************************************/
154/*
155 * Hardcoded cookies.
156 */
157#define BIRD 0x64726962 /* 'bird' */
158#define BIRD_INV 0x62697264 /* 'drib' */
159
160
161#ifdef RT_OS_WINDOWS
162/** Use a normal mutex for the loader so we remain at the same IRQL after
163 * taking it.
164 * @todo fix the mutex implementation on linux and make this the default. */
165# define SUPDRV_USE_MUTEX_FOR_LDR
166
167/** Use a normal mutex for the GIP so we remain at the same IRQL after
168 * taking it.
169 * @todo fix the mutex implementation on linux and make this the default. */
170# define SUPDRV_USE_MUTEX_FOR_GIP
171#endif
172
173
174/**
175 * OS debug print macro.
176 */
177#define OSDBGPRINT(a) SUPR0Printf a
178
179
180/** @name Context values for the per-session handle tables.
181 * The context value is used to distiguish between the different kinds of
182 * handles, making the handle table API do all the work.
183 * @{ */
184/** Handle context value for single release event handles. */
185#define SUPDRV_HANDLE_CTX_EVENT ((void *)(uintptr_t)(SUPDRVOBJTYPE_SEM_EVENT))
186/** Handle context value for multiple release event handles. */
187#define SUPDRV_HANDLE_CTX_EVENT_MULTI ((void *)(uintptr_t)(SUPDRVOBJTYPE_SEM_EVENT_MULTI))
188/** @} */
189
190
191/**
192 * Validates a session pointer.
193 *
194 * @returns true/false accordingly.
195 * @param pSession The session.
196 */
197#define SUP_IS_SESSION_VALID(pSession) \
198 ( VALID_PTR(pSession) \
199 && pSession->u32Cookie == BIRD_INV)
200
201
202/*******************************************************************************
203* Structures and Typedefs *
204*******************************************************************************/
205/** Pointer to the device extension. */
206typedef struct SUPDRVDEVEXT *PSUPDRVDEVEXT;
207
208
209/**
210 * Memory reference types.
211 */
212typedef enum
213{
214 /** Unused entry */
215 MEMREF_TYPE_UNUSED = 0,
216 /** Locked memory (r3 mapping only). */
217 MEMREF_TYPE_LOCKED,
218 /** Continous memory block (r3 and r0 mapping). */
219 MEMREF_TYPE_CONT,
220 /** Low memory block (r3 and r0 mapping). */
221 MEMREF_TYPE_LOW,
222 /** Memory block (r3 and r0 mapping). */
223 MEMREF_TYPE_MEM,
224 /** Locked memory (r3 mapping only) allocated by the support driver. */
225 MEMREF_TYPE_PAGE,
226 /** Blow the type up to 32-bit and mark the end. */
227 MEMREG_TYPE_32BIT_HACK = 0x7fffffff
228} SUPDRVMEMREFTYPE, *PSUPDRVMEMREFTYPE;
229
230
231/**
232 * Structure used for tracking memory a session
233 * references in one way or another.
234 */
235typedef struct SUPDRVMEMREF
236{
237 /** The memory object handle. */
238 RTR0MEMOBJ MemObj;
239 /** The ring-3 mapping memory object handle. */
240 RTR0MEMOBJ MapObjR3;
241 /** Type of memory. */
242 SUPDRVMEMREFTYPE eType;
243} SUPDRVMEMREF, *PSUPDRVMEMREF;
244
245
246/**
247 * Bundle of locked memory ranges.
248 */
249typedef struct SUPDRVBUNDLE
250{
251 /** Pointer to the next bundle. */
252 struct SUPDRVBUNDLE * volatile pNext;
253 /** Referenced memory. */
254 SUPDRVMEMREF aMem[64];
255 /** Number of entries used. */
256 uint32_t volatile cUsed;
257} SUPDRVBUNDLE, *PSUPDRVBUNDLE;
258
259
260/**
261 * Loaded image.
262 */
263typedef struct SUPDRVLDRIMAGE
264{
265 /** Next in chain. */
266 struct SUPDRVLDRIMAGE * volatile pNext;
267 /** Pointer to the image. */
268 void *pvImage;
269 /** Pointer to the allocated image buffer.
270 * pvImage is 32-byte aligned or it may governed by the native loader (this
271 * member is NULL then). */
272 void *pvImageAlloc;
273 /** Size of the image including the tables. This is mainly for verification
274 * of the load request. */
275 uint32_t cbImageWithTabs;
276 /** Size of the image. */
277 uint32_t cbImageBits;
278 /** The number of entries in the symbol table. */
279 uint32_t cSymbols;
280 /** Pointer to the symbol table. */
281 PSUPLDRSYM paSymbols;
282 /** The offset of the string table. */
283 char *pachStrTab;
284 /** Size of the string table. */
285 uint32_t cbStrTab;
286 /** Pointer to the optional module initialization callback. */
287 PFNR0MODULEINIT pfnModuleInit;
288 /** Pointer to the optional module termination callback. */
289 PFNR0MODULETERM pfnModuleTerm;
290 /** Service request handler. This is NULL for non-service modules. */
291 PFNSUPR0SERVICEREQHANDLER pfnServiceReqHandler;
292 /** The ldr image state. (IOCtl code of last opration.) */
293 uint32_t uState;
294 /** Usage count. */
295 uint32_t volatile cUsage;
296#ifdef RT_OS_WINDOWS
297 /** The section object for the loaded image (fNative=true). */
298 void *pvNtSectionObj;
299 /** Lock object. */
300 RTR0MEMOBJ hMemLock;
301#endif
302 /** Whether it's loaded by the native loader or not. */
303 bool fNative;
304 /** Image name. */
305 char szName[32];
306} SUPDRVLDRIMAGE, *PSUPDRVLDRIMAGE;
307
308
309/** Image usage record. */
310typedef struct SUPDRVLDRUSAGE
311{
312 /** Next in chain. */
313 struct SUPDRVLDRUSAGE * volatile pNext;
314 /** The image. */
315 PSUPDRVLDRIMAGE pImage;
316 /** Load count. */
317 uint32_t volatile cUsage;
318} SUPDRVLDRUSAGE, *PSUPDRVLDRUSAGE;
319
320
321/**
322 * Component factory registration record.
323 */
324typedef struct SUPDRVFACTORYREG
325{
326 /** Pointer to the next registration. */
327 struct SUPDRVFACTORYREG *pNext;
328 /** Pointer to the registered factory. */
329 PCSUPDRVFACTORY pFactory;
330 /** The session owning the factory.
331 * Used for deregistration and session cleanup. */
332 PSUPDRVSESSION pSession;
333 /** Length of the name. */
334 size_t cchName;
335} SUPDRVFACTORYREG;
336/** Pointer to a component factory registration record. */
337typedef SUPDRVFACTORYREG *PSUPDRVFACTORYREG;
338/** Pointer to a const component factory registration record. */
339typedef SUPDRVFACTORYREG const *PCSUPDRVFACTORYREG;
340
341
342/**
343 * Registered object.
344 * This takes care of reference counting and tracking data for access checks.
345 */
346typedef struct SUPDRVOBJ
347{
348 /** Magic value (SUPDRVOBJ_MAGIC). */
349 uint32_t u32Magic;
350 /** The object type. */
351 SUPDRVOBJTYPE enmType;
352 /** Pointer to the next in the global list. */
353 struct SUPDRVOBJ * volatile pNext;
354 /** Pointer to the object destructor.
355 * This may be set to NULL if the image containing the destructor get unloaded. */
356 PFNSUPDRVDESTRUCTOR pfnDestructor;
357 /** User argument 1. */
358 void *pvUser1;
359 /** User argument 2. */
360 void *pvUser2;
361 /** The total sum of all per-session usage. */
362 uint32_t volatile cUsage;
363 /** The creator user id. */
364 RTUID CreatorUid;
365 /** The creator group id. */
366 RTGID CreatorGid;
367 /** The creator process id. */
368 RTPROCESS CreatorProcess;
369} SUPDRVOBJ, *PSUPDRVOBJ;
370
371/** Magic number for SUPDRVOBJ::u32Magic. (Dame Agatha Mary Clarissa Christie). */
372#define SUPDRVOBJ_MAGIC 0x18900915
373/** Dead number magic for SUPDRVOBJ::u32Magic. */
374#define SUPDRVOBJ_MAGIC_DEAD 0x19760112
375
376/**
377 * The per-session object usage record.
378 */
379typedef struct SUPDRVUSAGE
380{
381 /** Pointer to the next in the list. */
382 struct SUPDRVUSAGE * volatile pNext;
383 /** Pointer to the object we're recording usage for. */
384 PSUPDRVOBJ pObj;
385 /** The usage count. */
386 uint32_t volatile cUsage;
387} SUPDRVUSAGE, *PSUPDRVUSAGE;
388
389
390/**
391 * Per session data.
392 * This is mainly for memory tracking.
393 */
394typedef struct SUPDRVSESSION
395{
396 /** Pointer to the device extension. */
397 PSUPDRVDEVEXT pDevExt;
398 /** Session Cookie. */
399 uint32_t u32Cookie;
400
401 /** The VM associated with the session. */
402 PVM pVM;
403 /** Handle table for IPRT semaphore wrapper APIs.
404 * Programmable from R0 and R3. */
405 RTHANDLETABLE hHandleTable;
406 /** Load usage records. (protected by SUPDRVDEVEXT::mtxLdr) */
407 PSUPDRVLDRUSAGE volatile pLdrUsage;
408
409 /** Spinlock protecting the bundles and the GIP members. */
410 RTSPINLOCK Spinlock;
411 /** The ring-3 mapping of the GIP (readonly). */
412 RTR0MEMOBJ GipMapObjR3;
413 /** Set if the session is using the GIP. */
414 uint32_t fGipReferenced;
415 /** Bundle of locked memory objects. */
416 SUPDRVBUNDLE Bundle;
417 /** List of generic usage records. (protected by SUPDRVDEVEXT::SpinLock) */
418 PSUPDRVUSAGE volatile pUsage;
419
420 /** The user id of the session. (Set by the OS part.) */
421 RTUID Uid;
422 /** The group id of the session. (Set by the OS part.) */
423 RTGID Gid;
424 /** The process (id) of the session. */
425 RTPROCESS Process;
426 /** Which process this session is associated with.
427 * This is NIL_RTR0PROCESS for kernel sessions and valid for user ones. */
428 RTR0PROCESS R0Process;
429#ifndef SUPDRV_AGNOSTIC
430# if defined(RT_OS_DARWIN)
431 /** Pointer to the associated org_virtualbox_SupDrvClient object. */
432 void *pvSupDrvClient;
433 /** Whether this session has been opened or not. */
434 bool fOpened;
435# endif
436# if defined(RT_OS_OS2)
437 /** The system file number of this session. */
438 uint16_t sfn;
439 uint16_t Alignment; /**< Alignment */
440# endif
441# if defined(RT_OS_DARWIN) || defined(RT_OS_OS2) || defined(RT_OS_SOLARIS)
442 /** Pointer to the next session with the same hash. */
443 PSUPDRVSESSION pNextHash;
444# endif
445#endif /* !SUPDRV_AGNOSTIC */
446} SUPDRVSESSION;
447
448
449/**
450 * Device extension.
451 */
452typedef struct SUPDRVDEVEXT
453{
454 /** Spinlock to serialize the initialization, usage counting and objects. */
455 RTSPINLOCK Spinlock;
456
457 /** List of registered objects. Protected by the spinlock. */
458 PSUPDRVOBJ volatile pObjs;
459 /** List of free object usage records. */
460 PSUPDRVUSAGE volatile pUsageFree;
461
462 /** Global cookie. */
463 uint32_t u32Cookie;
464 /** The actual size of SUPDRVSESSION. (SUPDRV_AGNOSTIC) */
465 uint32_t cbSession;
466
467 /** Loader mutex.
468 * This protects pvVMMR0, pvVMMR0Entry, pImages and SUPDRVSESSION::pLdrUsage. */
469#ifdef SUPDRV_USE_MUTEX_FOR_LDR
470 RTSEMMUTEX mtxLdr;
471#else
472 RTSEMFASTMUTEX mtxLdr;
473#endif
474
475 /** VMM Module 'handle'.
476 * 0 if the code VMM isn't loaded and Idt are nops. */
477 void * volatile pvVMMR0;
478 /** VMMR0EntryInt() pointer. */
479 DECLR0CALLBACKMEMBER(int, pfnVMMR0EntryInt, (PVM pVM, unsigned uOperation, void *pvArg));
480 /** VMMR0EntryFast() pointer. */
481 DECLR0CALLBACKMEMBER(void, pfnVMMR0EntryFast, (PVM pVM, VMCPUID idCpu, unsigned uOperation));
482 /** VMMR0EntryEx() pointer. */
483 DECLR0CALLBACKMEMBER(int, pfnVMMR0EntryEx, (PVM pVM, VMCPUID idCpu, unsigned uOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession));
484
485 /** Linked list of loaded code. */
486 PSUPDRVLDRIMAGE volatile pLdrImages;
487
488 /** GIP mutex.
489 * Any changes to any of the GIP members requires ownership of this mutex,
490 * except on driver init and termination. */
491#ifdef SUPDRV_USE_MUTEX_FOR_GIP
492 RTSEMMUTEX mtxGip;
493#else
494 RTSEMFASTMUTEX mtxGip;
495#endif
496 /** Pointer to the Global Info Page (GIP). */
497 PSUPGLOBALINFOPAGE pGip;
498 /** The physical address of the GIP. */
499 RTHCPHYS HCPhysGip;
500 /** Number of processes using the GIP.
501 * (The updates are suspend while cGipUsers is 0.)*/
502 uint32_t volatile cGipUsers;
503 /** The ring-0 memory object handle for the GIP page. */
504 RTR0MEMOBJ GipMemObj;
505 /** The GIP timer handle. */
506 PRTTIMER pGipTimer;
507 /** If non-zero we've successfully called RTTimerRequestSystemGranularity(). */
508 uint32_t u32SystemTimerGranularityGrant;
509 /** The CPU id of the GIP master.
510 * This CPU is responsible for the updating the common GIP data. */
511 RTCPUID volatile idGipMaster;
512
513 /** Component factory mutex.
514 * This protects pComponentFactoryHead and component factory querying. */
515 RTSEMFASTMUTEX mtxComponentFactory;
516 /** The head of the list of registered component factories. */
517 PSUPDRVFACTORYREG pComponentFactoryHead;
518
519#ifndef SUPDRV_AGNOSTIC
520# ifdef RT_OS_WINDOWS
521 /* Callback object returned by ExCreateCallback. */
522 PCALLBACK_OBJECT pObjPowerCallback;
523 /* Callback handle returned by ExRegisterCallback. */
524 PVOID hPowerCallback;
525# endif
526#endif
527} SUPDRVDEVEXT;
528
529
530RT_C_DECLS_BEGIN
531
532/*******************************************************************************
533* OS Specific Functions *
534*******************************************************************************/
535void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession);
536bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc);
537bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt);
538int VBOXCALL supdrvOSEnableVTx(bool fEnabled);
539
540/**
541 * Try open the image using the native loader.
542 *
543 * @returns IPRT status code.
544 * @retval VERR_NOT_SUPPORTED if native loading isn't supported.
545 *
546 * @param pDevExt The device globals.
547 * @param pImage The image handle. pvImage should be set on
548 * success, pvImageAlloc can also be set if
549 * appropriate.
550 * @param pszFilename The file name - UTF-8, may containg UNIX
551 * slashes on non-UNIX systems.
552 */
553int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename);
554
555/**
556 * Validates an entry point address.
557 *
558 * Called before supdrvOSLdrLoad.
559 *
560 * @returns IPRT status code.
561 * @param pDevExt The device globals.
562 * @param pImage The image data (still in the open state).
563 * @param pv The address within the image.
564 * @param pbImageBits The image bits as loaded by ring-3.
565 */
566int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage,
567 void *pv, const uint8_t *pbImageBits);
568
569/**
570 * Load the image.
571 *
572 * @returns IPRT status code.
573 * @param pDevExt The device globals.
574 * @param pImage The image data (up to date except for some
575 * entry point pointers).
576 * @param pbImageBits The image bits as loaded by ring-3.
577 */
578int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits);
579
580
581/**
582 * Unload the image.
583 *
584 * @param pDevExt The device globals.
585 * @param pImage The image data (mostly still valid).
586 */
587void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage);
588
589
590/*******************************************************************************
591* Shared Functions *
592*******************************************************************************/
593/* SUPDrv.c */
594int VBOXCALL supdrvIOCtl(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr);
595int VBOXCALL supdrvIOCtlFast(uintptr_t uIOCtl, VMCPUID idCpu, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
596int VBOXCALL supdrvIDC(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQHDR pReqHdr);
597int VBOXCALL supdrvInitDevExt(PSUPDRVDEVEXT pDevExt, size_t cbSession);
598void VBOXCALL supdrvDeleteDevExt(PSUPDRVDEVEXT pDevExt);
599int VBOXCALL supdrvCreateSession(PSUPDRVDEVEXT pDevExt, bool fUser, PSUPDRVSESSION *ppSession);
600void VBOXCALL supdrvCloseSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
601void VBOXCALL supdrvCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession);
602
603RT_C_DECLS_END
604
605#endif
606
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