/* $Id: SUPDrv.cpp 76227 2018-12-14 10:43:07Z vboxsync $ */ /** @file * VBoxDrv - The VirtualBox Support Driver - Common code. */ /* * Copyright (C) 2006-2017 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. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_SUP_DRV #define SUPDRV_AGNOSTIC #include "SUPDrvInternal.h" #ifndef PAGE_SHIFT # include #endif #include #include #include #include #if defined(RT_OS_DARWIN) || defined(RT_OS_SOLARIS) || defined(RT_OS_WINDOWS) # include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(RT_OS_DARWIN) || defined(RT_OS_SOLARIS) || defined(RT_OS_FREEBSD) # include # include #endif #include #include #include #include #include #include #if defined(RT_OS_SOLARIS) || defined(RT_OS_DARWIN) # include "dtrace/SUPDrv.h" #else # define VBOXDRV_SESSION_CREATE(pvSession, fUser) do { } while (0) # define VBOXDRV_SESSION_CLOSE(pvSession) do { } while (0) # define VBOXDRV_IOCTL_ENTRY(pvSession, uIOCtl, pvReqHdr) do { } while (0) # define VBOXDRV_IOCTL_RETURN(pvSession, uIOCtl, pvReqHdr, rcRet, rcReq) do { } while (0) #endif /* * Logging assignments: * Log - useful stuff, like failures. * LogFlow - program flow, except the really noisy bits. * Log2 - Cleanup. * Log3 - Loader flow noise. * Log4 - Call VMMR0 flow noise. * Log5 - Native yet-to-be-defined noise. * Log6 - Native ioctl flow noise. * * Logging requires BUILD_TYPE=debug and possibly changes to the logger * instantiation in log-vbox.c(pp). */ /********************************************************************************************************************************* * Defined Constants And Macros * *********************************************************************************************************************************/ /** @def VBOX_SVN_REV * The makefile should define this if it can. */ #ifndef VBOX_SVN_REV # define VBOX_SVN_REV 0 #endif /** @ SUPDRV_CHECK_SMAP_SETUP * SMAP check setup. */ /** @def SUPDRV_CHECK_SMAP_CHECK * Checks that the AC flag is set if SMAP is enabled. If AC is not set, it * will be logged and @a a_BadExpr is executed. */ #if defined(RT_OS_DARWIN) || defined(RT_OS_LINUX) # define SUPDRV_CHECK_SMAP_SETUP() uint32_t const fKernelFeatures = SUPR0GetKernelFeatures() # define SUPDRV_CHECK_SMAP_CHECK(a_pDevExt, a_BadExpr) \ do { \ if (fKernelFeatures & SUPKERNELFEATURES_SMAP) \ { \ RTCCUINTREG fEfl = ASMGetFlags(); \ if (RT_LIKELY(fEfl & X86_EFL_AC)) \ { /* likely */ } \ else \ { \ supdrvBadContext(a_pDevExt, "SUPDrv.cpp", __LINE__, "EFLAGS.AC is 0!"); \ a_BadExpr; \ } \ } \ } while (0) #else # define SUPDRV_CHECK_SMAP_SETUP() uint32_t const fKernelFeatures = 0 # define SUPDRV_CHECK_SMAP_CHECK(a_pDevExt, a_BadExpr) NOREF(fKernelFeatures) #endif /********************************************************************************************************************************* * Internal Functions * *********************************************************************************************************************************/ static DECLCALLBACK(int) supdrvSessionObjHandleRetain(RTHANDLETABLE hHandleTable, void *pvObj, void *pvCtx, void *pvUser); static DECLCALLBACK(void) supdrvSessionObjHandleDelete(RTHANDLETABLE hHandleTable, uint32_t h, void *pvObj, void *pvCtx, void *pvUser); static int supdrvMemAdd(PSUPDRVMEMREF pMem, PSUPDRVSESSION pSession); static int supdrvMemRelease(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, SUPDRVMEMREFTYPE eType); static int supdrvIOCtl_LdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDROPEN pReq); static int supdrvIOCtl_LdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRLOAD pReq); static int supdrvIOCtl_LdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRFREE pReq); static int supdrvIOCtl_LdrLockDown(PSUPDRVDEVEXT pDevExt); static int supdrvIOCtl_LdrQuerySymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRGETSYMBOL pReq); static int supdrvIDC_LdrGetSymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQGETSYM pReq); static int supdrvLdrSetVMMR0EPs(PSUPDRVDEVEXT pDevExt, void *pvVMMR0, void *pvVMMR0EntryFast, void *pvVMMR0EntryEx); static void supdrvLdrUnsetVMMR0EPs(PSUPDRVDEVEXT pDevExt); static int supdrvLdrAddUsage(PSUPDRVSESSION pSession, PSUPDRVLDRIMAGE pImage); static void supdrvLdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage); DECLINLINE(int) supdrvLdrLock(PSUPDRVDEVEXT pDevExt); DECLINLINE(int) supdrvLdrUnlock(PSUPDRVDEVEXT pDevExt); static int supdrvIOCtl_CallServiceModule(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPCALLSERVICE pReq); static int supdrvIOCtl_LoggerSettings(PSUPLOGGERSETTINGS pReq); static int supdrvIOCtl_MsrProber(PSUPDRVDEVEXT pDevExt, PSUPMSRPROBER pReq); static int supdrvIOCtl_ResumeSuspendedKbds(void); /********************************************************************************************************************************* * Global Variables * *********************************************************************************************************************************/ /** * Array of the R0 SUP API. * * While making changes to these exports, make sure to update the IOC * minor version (SUPDRV_IOC_VERSION). * * @remarks This array is processed by SUPR0-def-pe.sed and SUPR0-def-lx.sed to * produce definition files from which import libraries are generated. * Take care when commenting things and especially with \#ifdef'ing. */ static SUPFUNC g_aFunctions[] = { /* SED: START */ /* name function */ /* Entries with absolute addresses determined at runtime, fixup code makes ugly ASSUMPTIONS about the order here: */ { "SUPR0AbsIs64bit", (void *)0 }, { "SUPR0Abs64bitKernelCS", (void *)0 }, { "SUPR0Abs64bitKernelSS", (void *)0 }, { "SUPR0Abs64bitKernelDS", (void *)0 }, { "SUPR0AbsKernelCS", (void *)0 }, { "SUPR0AbsKernelSS", (void *)0 }, { "SUPR0AbsKernelDS", (void *)0 }, { "SUPR0AbsKernelES", (void *)0 }, { "SUPR0AbsKernelFS", (void *)0 }, { "SUPR0AbsKernelGS", (void *)0 }, /* Normal function pointers: */ { "g_pSUPGlobalInfoPage", (void *)&g_pSUPGlobalInfoPage }, /* SED: DATA */ { "SUPGetGIP", (void *)(uintptr_t)SUPGetGIP }, { "SUPReadTscWithDelta", (void *)(uintptr_t)SUPReadTscWithDelta }, { "SUPGetTscDeltaSlow", (void *)(uintptr_t)SUPGetTscDeltaSlow }, { "SUPGetCpuHzFromGipForAsyncMode", (void *)(uintptr_t)SUPGetCpuHzFromGipForAsyncMode }, { "SUPIsTscFreqCompatible", (void *)(uintptr_t)SUPIsTscFreqCompatible }, { "SUPIsTscFreqCompatibleEx", (void *)(uintptr_t)SUPIsTscFreqCompatibleEx }, { "SUPR0BadContext", (void *)(uintptr_t)SUPR0BadContext }, { "SUPR0ComponentDeregisterFactory", (void *)(uintptr_t)SUPR0ComponentDeregisterFactory }, { "SUPR0ComponentQueryFactory", (void *)(uintptr_t)SUPR0ComponentQueryFactory }, { "SUPR0ComponentRegisterFactory", (void *)(uintptr_t)SUPR0ComponentRegisterFactory }, { "SUPR0ContAlloc", (void *)(uintptr_t)SUPR0ContAlloc }, { "SUPR0ContFree", (void *)(uintptr_t)SUPR0ContFree }, { "SUPR0ChangeCR4", (void *)(uintptr_t)SUPR0ChangeCR4 }, { "SUPR0EnableVTx", (void *)(uintptr_t)SUPR0EnableVTx }, { "SUPR0SuspendVTxOnCpu", (void *)(uintptr_t)SUPR0SuspendVTxOnCpu }, { "SUPR0ResumeVTxOnCpu", (void *)(uintptr_t)SUPR0ResumeVTxOnCpu }, { "SUPR0GetCurrentGdtRw", (void *)(uintptr_t)SUPR0GetCurrentGdtRw }, { "SUPR0GetKernelFeatures", (void *)(uintptr_t)SUPR0GetKernelFeatures }, { "SUPR0GetPagingMode", (void *)(uintptr_t)SUPR0GetPagingMode }, { "SUPR0GetSvmUsability", (void *)(uintptr_t)SUPR0GetSvmUsability }, { "SUPR0GetVTSupport", (void *)(uintptr_t)SUPR0GetVTSupport }, { "SUPR0GetVmxUsability", (void *)(uintptr_t)SUPR0GetVmxUsability }, { "SUPR0GetRawModeUsability", (void *)(uintptr_t)SUPR0GetRawModeUsability }, { "SUPR0LockMem", (void *)(uintptr_t)SUPR0LockMem }, { "SUPR0LowAlloc", (void *)(uintptr_t)SUPR0LowAlloc }, { "SUPR0LowFree", (void *)(uintptr_t)SUPR0LowFree }, { "SUPR0MemAlloc", (void *)(uintptr_t)SUPR0MemAlloc }, { "SUPR0MemFree", (void *)(uintptr_t)SUPR0MemFree }, { "SUPR0MemGetPhys", (void *)(uintptr_t)SUPR0MemGetPhys }, { "SUPR0ObjAddRef", (void *)(uintptr_t)SUPR0ObjAddRef }, { "SUPR0ObjAddRefEx", (void *)(uintptr_t)SUPR0ObjAddRefEx }, { "SUPR0ObjRegister", (void *)(uintptr_t)SUPR0ObjRegister }, { "SUPR0ObjRelease", (void *)(uintptr_t)SUPR0ObjRelease }, { "SUPR0ObjVerifyAccess", (void *)(uintptr_t)SUPR0ObjVerifyAccess }, { "SUPR0PageAllocEx", (void *)(uintptr_t)SUPR0PageAllocEx }, { "SUPR0PageFree", (void *)(uintptr_t)SUPR0PageFree }, { "SUPR0Printf", (void *)(uintptr_t)SUPR0Printf }, { "SUPR0GetSessionGVM", (void *)(uintptr_t)SUPR0GetSessionGVM }, { "SUPR0GetSessionVM", (void *)(uintptr_t)SUPR0GetSessionVM }, { "SUPR0SetSessionVM", (void *)(uintptr_t)SUPR0SetSessionVM }, { "SUPR0TscDeltaMeasureBySetIndex", (void *)(uintptr_t)SUPR0TscDeltaMeasureBySetIndex }, { "SUPR0TracerDeregisterDrv", (void *)(uintptr_t)SUPR0TracerDeregisterDrv }, { "SUPR0TracerDeregisterImpl", (void *)(uintptr_t)SUPR0TracerDeregisterImpl }, { "SUPR0TracerFireProbe", (void *)(uintptr_t)SUPR0TracerFireProbe }, { "SUPR0TracerRegisterDrv", (void *)(uintptr_t)SUPR0TracerRegisterDrv }, { "SUPR0TracerRegisterImpl", (void *)(uintptr_t)SUPR0TracerRegisterImpl }, { "SUPR0TracerRegisterModule", (void *)(uintptr_t)SUPR0TracerRegisterModule }, { "SUPR0TracerUmodProbeFire", (void *)(uintptr_t)SUPR0TracerUmodProbeFire }, { "SUPR0UnlockMem", (void *)(uintptr_t)SUPR0UnlockMem }, #ifdef RT_OS_WINDOWS { "SUPR0IoCtlSetupForHandle", (void *)(uintptr_t)SUPR0IoCtlSetupForHandle }, /* only-windows */ { "SUPR0IoCtlPerform", (void *)(uintptr_t)SUPR0IoCtlPerform }, /* only-windows */ { "SUPR0IoCtlCleanup", (void *)(uintptr_t)SUPR0IoCtlCleanup }, /* only-windows */ #endif { "SUPSemEventClose", (void *)(uintptr_t)SUPSemEventClose }, { "SUPSemEventCreate", (void *)(uintptr_t)SUPSemEventCreate }, { "SUPSemEventGetResolution", (void *)(uintptr_t)SUPSemEventGetResolution }, { "SUPSemEventMultiClose", (void *)(uintptr_t)SUPSemEventMultiClose }, { "SUPSemEventMultiCreate", (void *)(uintptr_t)SUPSemEventMultiCreate }, { "SUPSemEventMultiGetResolution", (void *)(uintptr_t)SUPSemEventMultiGetResolution }, { "SUPSemEventMultiReset", (void *)(uintptr_t)SUPSemEventMultiReset }, { "SUPSemEventMultiSignal", (void *)(uintptr_t)SUPSemEventMultiSignal }, { "SUPSemEventMultiWait", (void *)(uintptr_t)SUPSemEventMultiWait }, { "SUPSemEventMultiWaitNoResume", (void *)(uintptr_t)SUPSemEventMultiWaitNoResume }, { "SUPSemEventMultiWaitNsAbsIntr", (void *)(uintptr_t)SUPSemEventMultiWaitNsAbsIntr }, { "SUPSemEventMultiWaitNsRelIntr", (void *)(uintptr_t)SUPSemEventMultiWaitNsRelIntr }, { "SUPSemEventSignal", (void *)(uintptr_t)SUPSemEventSignal }, { "SUPSemEventWait", (void *)(uintptr_t)SUPSemEventWait }, { "SUPSemEventWaitNoResume", (void *)(uintptr_t)SUPSemEventWaitNoResume }, { "SUPSemEventWaitNsAbsIntr", (void *)(uintptr_t)SUPSemEventWaitNsAbsIntr }, { "SUPSemEventWaitNsRelIntr", (void *)(uintptr_t)SUPSemEventWaitNsRelIntr }, { "RTAssertAreQuiet", (void *)(uintptr_t)RTAssertAreQuiet }, { "RTAssertMayPanic", (void *)(uintptr_t)RTAssertMayPanic }, { "RTAssertMsg1", (void *)(uintptr_t)RTAssertMsg1 }, { "RTAssertMsg2AddV", (void *)(uintptr_t)RTAssertMsg2AddV }, { "RTAssertMsg2V", (void *)(uintptr_t)RTAssertMsg2V }, { "RTAssertSetMayPanic", (void *)(uintptr_t)RTAssertSetMayPanic }, { "RTAssertSetQuiet", (void *)(uintptr_t)RTAssertSetQuiet }, { "RTCrc32", (void *)(uintptr_t)RTCrc32 }, { "RTCrc32Finish", (void *)(uintptr_t)RTCrc32Finish }, { "RTCrc32Process", (void *)(uintptr_t)RTCrc32Process }, { "RTCrc32Start", (void *)(uintptr_t)RTCrc32Start }, { "RTErrConvertFromErrno", (void *)(uintptr_t)RTErrConvertFromErrno }, { "RTErrConvertToErrno", (void *)(uintptr_t)RTErrConvertToErrno }, { "RTHandleTableAllocWithCtx", (void *)(uintptr_t)RTHandleTableAllocWithCtx }, { "RTHandleTableCreate", (void *)(uintptr_t)RTHandleTableCreate }, { "RTHandleTableCreateEx", (void *)(uintptr_t)RTHandleTableCreateEx }, { "RTHandleTableDestroy", (void *)(uintptr_t)RTHandleTableDestroy }, { "RTHandleTableFreeWithCtx", (void *)(uintptr_t)RTHandleTableFreeWithCtx }, { "RTHandleTableLookupWithCtx", (void *)(uintptr_t)RTHandleTableLookupWithCtx }, { "RTLogDefaultInstance", (void *)(uintptr_t)RTLogDefaultInstance }, { "RTLogDefaultInstanceEx", (void *)(uintptr_t)RTLogDefaultInstanceEx }, { "RTLogGetDefaultInstance", (void *)(uintptr_t)RTLogGetDefaultInstance }, { "RTLogGetDefaultInstanceEx", (void *)(uintptr_t)RTLogGetDefaultInstanceEx }, { "SUPR0GetDefaultLogInstanceEx", (void *)(uintptr_t)SUPR0GetDefaultLogInstanceEx }, { "RTLogLoggerExV", (void *)(uintptr_t)RTLogLoggerExV }, { "RTLogPrintfV", (void *)(uintptr_t)RTLogPrintfV }, { "RTLogRelGetDefaultInstance", (void *)(uintptr_t)RTLogRelGetDefaultInstance }, { "RTLogRelGetDefaultInstanceEx", (void *)(uintptr_t)RTLogRelGetDefaultInstanceEx }, { "SUPR0GetDefaultLogRelInstanceEx", (void *)(uintptr_t)SUPR0GetDefaultLogRelInstanceEx }, { "RTLogSetDefaultInstanceThread", (void *)(uintptr_t)RTLogSetDefaultInstanceThread }, { "RTMemAllocExTag", (void *)(uintptr_t)RTMemAllocExTag }, { "RTMemAllocTag", (void *)(uintptr_t)RTMemAllocTag }, { "RTMemAllocVarTag", (void *)(uintptr_t)RTMemAllocVarTag }, { "RTMemAllocZTag", (void *)(uintptr_t)RTMemAllocZTag }, { "RTMemAllocZVarTag", (void *)(uintptr_t)RTMemAllocZVarTag }, { "RTMemDupExTag", (void *)(uintptr_t)RTMemDupExTag }, { "RTMemDupTag", (void *)(uintptr_t)RTMemDupTag }, { "RTMemFree", (void *)(uintptr_t)RTMemFree }, { "RTMemFreeEx", (void *)(uintptr_t)RTMemFreeEx }, { "RTMemReallocTag", (void *)(uintptr_t)RTMemReallocTag }, { "RTMpCpuId", (void *)(uintptr_t)RTMpCpuId }, { "RTMpCpuIdFromSetIndex", (void *)(uintptr_t)RTMpCpuIdFromSetIndex }, { "RTMpCpuIdToSetIndex", (void *)(uintptr_t)RTMpCpuIdToSetIndex }, { "RTMpCurSetIndex", (void *)(uintptr_t)RTMpCurSetIndex }, { "RTMpCurSetIndexAndId", (void *)(uintptr_t)RTMpCurSetIndexAndId }, { "RTMpGetArraySize", (void *)(uintptr_t)RTMpGetArraySize }, { "RTMpGetCount", (void *)(uintptr_t)RTMpGetCount }, { "RTMpGetMaxCpuId", (void *)(uintptr_t)RTMpGetMaxCpuId }, { "RTMpGetOnlineCount", (void *)(uintptr_t)RTMpGetOnlineCount }, { "RTMpGetOnlineSet", (void *)(uintptr_t)RTMpGetOnlineSet }, { "RTMpGetSet", (void *)(uintptr_t)RTMpGetSet }, { "RTMpIsCpuOnline", (void *)(uintptr_t)RTMpIsCpuOnline }, { "RTMpIsCpuPossible", (void *)(uintptr_t)RTMpIsCpuPossible }, { "RTMpIsCpuWorkPending", (void *)(uintptr_t)RTMpIsCpuWorkPending }, { "RTMpNotificationDeregister", (void *)(uintptr_t)RTMpNotificationDeregister }, { "RTMpNotificationRegister", (void *)(uintptr_t)RTMpNotificationRegister }, { "RTMpOnAll", (void *)(uintptr_t)RTMpOnAll }, { "RTMpOnOthers", (void *)(uintptr_t)RTMpOnOthers }, { "RTMpOnSpecific", (void *)(uintptr_t)RTMpOnSpecific }, { "RTMpPokeCpu", (void *)(uintptr_t)RTMpPokeCpu }, { "RTNetIPv4AddDataChecksum", (void *)(uintptr_t)RTNetIPv4AddDataChecksum }, { "RTNetIPv4AddTCPChecksum", (void *)(uintptr_t)RTNetIPv4AddTCPChecksum }, { "RTNetIPv4AddUDPChecksum", (void *)(uintptr_t)RTNetIPv4AddUDPChecksum }, { "RTNetIPv4FinalizeChecksum", (void *)(uintptr_t)RTNetIPv4FinalizeChecksum }, { "RTNetIPv4HdrChecksum", (void *)(uintptr_t)RTNetIPv4HdrChecksum }, { "RTNetIPv4IsDHCPValid", (void *)(uintptr_t)RTNetIPv4IsDHCPValid }, { "RTNetIPv4IsHdrValid", (void *)(uintptr_t)RTNetIPv4IsHdrValid }, { "RTNetIPv4IsTCPSizeValid", (void *)(uintptr_t)RTNetIPv4IsTCPSizeValid }, { "RTNetIPv4IsTCPValid", (void *)(uintptr_t)RTNetIPv4IsTCPValid }, { "RTNetIPv4IsUDPSizeValid", (void *)(uintptr_t)RTNetIPv4IsUDPSizeValid }, { "RTNetIPv4IsUDPValid", (void *)(uintptr_t)RTNetIPv4IsUDPValid }, { "RTNetIPv4PseudoChecksum", (void *)(uintptr_t)RTNetIPv4PseudoChecksum }, { "RTNetIPv4PseudoChecksumBits", (void *)(uintptr_t)RTNetIPv4PseudoChecksumBits }, { "RTNetIPv4TCPChecksum", (void *)(uintptr_t)RTNetIPv4TCPChecksum }, { "RTNetIPv4UDPChecksum", (void *)(uintptr_t)RTNetIPv4UDPChecksum }, { "RTNetIPv6PseudoChecksum", (void *)(uintptr_t)RTNetIPv6PseudoChecksum }, { "RTNetIPv6PseudoChecksumBits", (void *)(uintptr_t)RTNetIPv6PseudoChecksumBits }, { "RTNetIPv6PseudoChecksumEx", (void *)(uintptr_t)RTNetIPv6PseudoChecksumEx }, { "RTNetTCPChecksum", (void *)(uintptr_t)RTNetTCPChecksum }, { "RTNetUDPChecksum", (void *)(uintptr_t)RTNetUDPChecksum }, { "RTPowerNotificationDeregister", (void *)(uintptr_t)RTPowerNotificationDeregister }, { "RTPowerNotificationRegister", (void *)(uintptr_t)RTPowerNotificationRegister }, { "RTProcSelf", (void *)(uintptr_t)RTProcSelf }, { "RTR0AssertPanicSystem", (void *)(uintptr_t)RTR0AssertPanicSystem }, #if defined(RT_OS_DARWIN) || defined(RT_OS_SOLARIS) || defined(RT_OS_WINDOWS) { "RTR0DbgKrnlInfoOpen", (void *)(uintptr_t)RTR0DbgKrnlInfoOpen }, /* only-darwin, only-solaris, only-windows */ { "RTR0DbgKrnlInfoQueryMember", (void *)(uintptr_t)RTR0DbgKrnlInfoQueryMember }, /* only-darwin, only-solaris, only-windows */ # if defined(RT_OS_SOLARIS) { "RTR0DbgKrnlInfoQuerySize", (void *)(uintptr_t)RTR0DbgKrnlInfoQuerySize }, /* only-solaris */ # endif { "RTR0DbgKrnlInfoQuerySymbol", (void *)(uintptr_t)RTR0DbgKrnlInfoQuerySymbol }, /* only-darwin, only-solaris, only-windows */ { "RTR0DbgKrnlInfoRelease", (void *)(uintptr_t)RTR0DbgKrnlInfoRelease }, /* only-darwin, only-solaris, only-windows */ { "RTR0DbgKrnlInfoRetain", (void *)(uintptr_t)RTR0DbgKrnlInfoRetain }, /* only-darwin, only-solaris, only-windows */ #endif { "RTR0MemAreKrnlAndUsrDifferent", (void *)(uintptr_t)RTR0MemAreKrnlAndUsrDifferent }, { "RTR0MemKernelIsValidAddr", (void *)(uintptr_t)RTR0MemKernelIsValidAddr }, { "RTR0MemKernelCopyFrom", (void *)(uintptr_t)RTR0MemKernelCopyFrom }, { "RTR0MemKernelCopyTo", (void *)(uintptr_t)RTR0MemKernelCopyTo }, { "RTR0MemObjAddress", (void *)(uintptr_t)RTR0MemObjAddress }, { "RTR0MemObjAddressR3", (void *)(uintptr_t)RTR0MemObjAddressR3 }, { "RTR0MemObjAllocContTag", (void *)(uintptr_t)RTR0MemObjAllocContTag }, { "RTR0MemObjAllocLowTag", (void *)(uintptr_t)RTR0MemObjAllocLowTag }, { "RTR0MemObjAllocPageTag", (void *)(uintptr_t)RTR0MemObjAllocPageTag }, { "RTR0MemObjAllocPhysExTag", (void *)(uintptr_t)RTR0MemObjAllocPhysExTag }, { "RTR0MemObjAllocPhysNCTag", (void *)(uintptr_t)RTR0MemObjAllocPhysNCTag }, { "RTR0MemObjAllocPhysTag", (void *)(uintptr_t)RTR0MemObjAllocPhysTag }, { "RTR0MemObjEnterPhysTag", (void *)(uintptr_t)RTR0MemObjEnterPhysTag }, { "RTR0MemObjFree", (void *)(uintptr_t)RTR0MemObjFree }, { "RTR0MemObjGetPagePhysAddr", (void *)(uintptr_t)RTR0MemObjGetPagePhysAddr }, { "RTR0MemObjIsMapping", (void *)(uintptr_t)RTR0MemObjIsMapping }, { "RTR0MemObjLockUserTag", (void *)(uintptr_t)RTR0MemObjLockUserTag }, { "RTR0MemObjMapKernelExTag", (void *)(uintptr_t)RTR0MemObjMapKernelExTag }, { "RTR0MemObjMapKernelTag", (void *)(uintptr_t)RTR0MemObjMapKernelTag }, { "RTR0MemObjMapUserTag", (void *)(uintptr_t)RTR0MemObjMapUserTag }, { "RTR0MemObjProtect", (void *)(uintptr_t)RTR0MemObjProtect }, { "RTR0MemObjSize", (void *)(uintptr_t)RTR0MemObjSize }, { "RTR0MemUserCopyFrom", (void *)(uintptr_t)RTR0MemUserCopyFrom }, { "RTR0MemUserCopyTo", (void *)(uintptr_t)RTR0MemUserCopyTo }, { "RTR0MemUserIsValidAddr", (void *)(uintptr_t)RTR0MemUserIsValidAddr }, { "RTR0ProcHandleSelf", (void *)(uintptr_t)RTR0ProcHandleSelf }, { "RTSemEventCreate", (void *)(uintptr_t)RTSemEventCreate }, { "RTSemEventDestroy", (void *)(uintptr_t)RTSemEventDestroy }, { "RTSemEventGetResolution", (void *)(uintptr_t)RTSemEventGetResolution }, { "RTSemEventMultiCreate", (void *)(uintptr_t)RTSemEventMultiCreate }, { "RTSemEventMultiDestroy", (void *)(uintptr_t)RTSemEventMultiDestroy }, { "RTSemEventMultiGetResolution", (void *)(uintptr_t)RTSemEventMultiGetResolution }, { "RTSemEventMultiReset", (void *)(uintptr_t)RTSemEventMultiReset }, { "RTSemEventMultiSignal", (void *)(uintptr_t)RTSemEventMultiSignal }, { "RTSemEventMultiWait", (void *)(uintptr_t)RTSemEventMultiWait }, { "RTSemEventMultiWaitEx", (void *)(uintptr_t)RTSemEventMultiWaitEx }, { "RTSemEventMultiWaitExDebug", (void *)(uintptr_t)RTSemEventMultiWaitExDebug }, { "RTSemEventMultiWaitNoResume", (void *)(uintptr_t)RTSemEventMultiWaitNoResume }, { "RTSemEventSignal", (void *)(uintptr_t)RTSemEventSignal }, { "RTSemEventWait", (void *)(uintptr_t)RTSemEventWait }, { "RTSemEventWaitEx", (void *)(uintptr_t)RTSemEventWaitEx }, { "RTSemEventWaitExDebug", (void *)(uintptr_t)RTSemEventWaitExDebug }, { "RTSemEventWaitNoResume", (void *)(uintptr_t)RTSemEventWaitNoResume }, { "RTSemFastMutexCreate", (void *)(uintptr_t)RTSemFastMutexCreate }, { "RTSemFastMutexDestroy", (void *)(uintptr_t)RTSemFastMutexDestroy }, { "RTSemFastMutexRelease", (void *)(uintptr_t)RTSemFastMutexRelease }, { "RTSemFastMutexRequest", (void *)(uintptr_t)RTSemFastMutexRequest }, { "RTSemMutexCreate", (void *)(uintptr_t)RTSemMutexCreate }, { "RTSemMutexDestroy", (void *)(uintptr_t)RTSemMutexDestroy }, { "RTSemMutexRelease", (void *)(uintptr_t)RTSemMutexRelease }, { "RTSemMutexRequest", (void *)(uintptr_t)RTSemMutexRequest }, { "RTSemMutexRequestDebug", (void *)(uintptr_t)RTSemMutexRequestDebug }, { "RTSemMutexRequestNoResume", (void *)(uintptr_t)RTSemMutexRequestNoResume }, { "RTSemMutexRequestNoResumeDebug", (void *)(uintptr_t)RTSemMutexRequestNoResumeDebug }, { "RTSpinlockAcquire", (void *)(uintptr_t)RTSpinlockAcquire }, { "RTSpinlockCreate", (void *)(uintptr_t)RTSpinlockCreate }, { "RTSpinlockDestroy", (void *)(uintptr_t)RTSpinlockDestroy }, { "RTSpinlockRelease", (void *)(uintptr_t)RTSpinlockRelease }, { "RTStrCopy", (void *)(uintptr_t)RTStrCopy }, { "RTStrDupTag", (void *)(uintptr_t)RTStrDupTag }, { "RTStrFormat", (void *)(uintptr_t)RTStrFormat }, { "RTStrFormatNumber", (void *)(uintptr_t)RTStrFormatNumber }, { "RTStrFormatTypeDeregister", (void *)(uintptr_t)RTStrFormatTypeDeregister }, { "RTStrFormatTypeRegister", (void *)(uintptr_t)RTStrFormatTypeRegister }, { "RTStrFormatTypeSetUser", (void *)(uintptr_t)RTStrFormatTypeSetUser }, { "RTStrFormatV", (void *)(uintptr_t)RTStrFormatV }, { "RTStrFree", (void *)(uintptr_t)RTStrFree }, { "RTStrNCmp", (void *)(uintptr_t)RTStrNCmp }, { "RTStrPrintf", (void *)(uintptr_t)RTStrPrintf }, { "RTStrPrintfEx", (void *)(uintptr_t)RTStrPrintfEx }, { "RTStrPrintfExV", (void *)(uintptr_t)RTStrPrintfExV }, { "RTStrPrintfV", (void *)(uintptr_t)RTStrPrintfV }, { "RTThreadCreate", (void *)(uintptr_t)RTThreadCreate }, { "RTThreadCtxHookIsEnabled", (void *)(uintptr_t)RTThreadCtxHookIsEnabled }, { "RTThreadCtxHookCreate", (void *)(uintptr_t)RTThreadCtxHookCreate }, { "RTThreadCtxHookDestroy", (void *)(uintptr_t)RTThreadCtxHookDestroy }, { "RTThreadCtxHookDisable", (void *)(uintptr_t)RTThreadCtxHookDisable }, { "RTThreadCtxHookEnable", (void *)(uintptr_t)RTThreadCtxHookEnable }, { "RTThreadGetName", (void *)(uintptr_t)RTThreadGetName }, { "RTThreadGetNative", (void *)(uintptr_t)RTThreadGetNative }, { "RTThreadGetType", (void *)(uintptr_t)RTThreadGetType }, { "RTThreadIsInInterrupt", (void *)(uintptr_t)RTThreadIsInInterrupt }, { "RTThreadNativeSelf", (void *)(uintptr_t)RTThreadNativeSelf }, { "RTThreadPreemptDisable", (void *)(uintptr_t)RTThreadPreemptDisable }, { "RTThreadPreemptIsEnabled", (void *)(uintptr_t)RTThreadPreemptIsEnabled }, { "RTThreadPreemptIsPending", (void *)(uintptr_t)RTThreadPreemptIsPending }, { "RTThreadPreemptIsPendingTrusty", (void *)(uintptr_t)RTThreadPreemptIsPendingTrusty }, { "RTThreadPreemptIsPossible", (void *)(uintptr_t)RTThreadPreemptIsPossible }, { "RTThreadPreemptRestore", (void *)(uintptr_t)RTThreadPreemptRestore }, { "RTThreadSelf", (void *)(uintptr_t)RTThreadSelf }, { "RTThreadSelfName", (void *)(uintptr_t)RTThreadSelfName }, { "RTThreadSleep", (void *)(uintptr_t)RTThreadSleep }, { "RTThreadUserReset", (void *)(uintptr_t)RTThreadUserReset }, { "RTThreadUserSignal", (void *)(uintptr_t)RTThreadUserSignal }, { "RTThreadUserWait", (void *)(uintptr_t)RTThreadUserWait }, { "RTThreadUserWaitNoResume", (void *)(uintptr_t)RTThreadUserWaitNoResume }, { "RTThreadWait", (void *)(uintptr_t)RTThreadWait }, { "RTThreadWaitNoResume", (void *)(uintptr_t)RTThreadWaitNoResume }, { "RTThreadYield", (void *)(uintptr_t)RTThreadYield }, { "RTTimeMilliTS", (void *)(uintptr_t)RTTimeMilliTS }, { "RTTimeNanoTS", (void *)(uintptr_t)RTTimeNanoTS }, { "RTTimeNow", (void *)(uintptr_t)RTTimeNow }, { "RTTimerCanDoHighResolution", (void *)(uintptr_t)RTTimerCanDoHighResolution }, { "RTTimerChangeInterval", (void *)(uintptr_t)RTTimerChangeInterval }, { "RTTimerCreate", (void *)(uintptr_t)RTTimerCreate }, { "RTTimerCreateEx", (void *)(uintptr_t)RTTimerCreateEx }, { "RTTimerDestroy", (void *)(uintptr_t)RTTimerDestroy }, { "RTTimerGetSystemGranularity", (void *)(uintptr_t)RTTimerGetSystemGranularity }, { "RTTimerReleaseSystemGranularity", (void *)(uintptr_t)RTTimerReleaseSystemGranularity }, { "RTTimerRequestSystemGranularity", (void *)(uintptr_t)RTTimerRequestSystemGranularity }, { "RTTimerStart", (void *)(uintptr_t)RTTimerStart }, { "RTTimerStop", (void *)(uintptr_t)RTTimerStop }, { "RTTimeSystemMilliTS", (void *)(uintptr_t)RTTimeSystemMilliTS }, { "RTTimeSystemNanoTS", (void *)(uintptr_t)RTTimeSystemNanoTS }, { "RTUuidCompare", (void *)(uintptr_t)RTUuidCompare }, { "RTUuidCompareStr", (void *)(uintptr_t)RTUuidCompareStr }, { "RTUuidFromStr", (void *)(uintptr_t)RTUuidFromStr }, /* SED: END */ }; #if defined(RT_OS_DARWIN) || defined(RT_OS_SOLARIS) || defined(RT_OS_FREEBSD) /** * Drag in the rest of IRPT since we share it with the * rest of the kernel modules on darwin. */ PFNRT g_apfnVBoxDrvIPRTDeps[] = { /* VBoxNetAdp */ (PFNRT)RTRandBytes, /* VBoxUSB */ (PFNRT)RTPathStripFilename, (PFNRT)RTHandleTableAlloc, #if !defined(RT_OS_FREEBSD) (PFNRT)RTStrPurgeEncoding, #endif NULL }; #endif /* RT_OS_DARWIN || RT_OS_SOLARIS || RT_OS_SOLARIS */ /** * Initializes the device extentsion structure. * * @returns IPRT status code. * @param pDevExt The device extension to initialize. * @param cbSession The size of the session structure. The size of * SUPDRVSESSION may be smaller when SUPDRV_AGNOSTIC is * defined because we're skipping the OS specific members * then. */ int VBOXCALL supdrvInitDevExt(PSUPDRVDEVEXT pDevExt, size_t cbSession) { int rc; #ifdef SUPDRV_WITH_RELEASE_LOGGER /* * Create the release log. */ static const char * const s_apszGroups[] = VBOX_LOGGROUP_NAMES; PRTLOGGER pRelLogger; rc = RTLogCreate(&pRelLogger, 0 /* fFlags */, "all", "VBOX_RELEASE_LOG", RT_ELEMENTS(s_apszGroups), s_apszGroups, RTLOGDEST_STDOUT | RTLOGDEST_DEBUGGER, NULL); if (RT_SUCCESS(rc)) RTLogRelSetDefaultInstance(pRelLogger); /** @todo Add native hook for getting logger config parameters and setting * them. On linux we should use the module parameter stuff... */ #endif #if (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)) && !defined(VBOX_WITH_OLD_CPU_SUPPORT) /* * Require SSE2 to be present. */ if (!(ASMCpuId_EDX(1) & X86_CPUID_FEATURE_EDX_SSE2)) { SUPR0Printf("vboxdrv: Requires SSE2 (cpuid(0).EDX=%#x)\n", ASMCpuId_EDX(1)); return VERR_UNSUPPORTED_CPU; } #endif /* * Initialize it. */ memset(pDevExt, 0, sizeof(*pDevExt)); /* Does not wipe OS specific tail section of the structure. */ pDevExt->Spinlock = NIL_RTSPINLOCK; pDevExt->hGipSpinlock = NIL_RTSPINLOCK; pDevExt->hSessionHashTabSpinlock = NIL_RTSPINLOCK; #ifdef SUPDRV_USE_MUTEX_FOR_LDR pDevExt->mtxLdr = NIL_RTSEMMUTEX; #else pDevExt->mtxLdr = NIL_RTSEMFASTMUTEX; #endif #ifdef SUPDRV_USE_MUTEX_FOR_GIP pDevExt->mtxGip = NIL_RTSEMMUTEX; pDevExt->mtxTscDelta = NIL_RTSEMMUTEX; #else pDevExt->mtxGip = NIL_RTSEMFASTMUTEX; pDevExt->mtxTscDelta = NIL_RTSEMFASTMUTEX; #endif rc = RTSpinlockCreate(&pDevExt->Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "SUPDrvDevExt"); if (RT_SUCCESS(rc)) rc = RTSpinlockCreate(&pDevExt->hGipSpinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "SUPDrvGip"); if (RT_SUCCESS(rc)) rc = RTSpinlockCreate(&pDevExt->hSessionHashTabSpinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "SUPDrvSession"); if (RT_SUCCESS(rc)) #ifdef SUPDRV_USE_MUTEX_FOR_LDR rc = RTSemMutexCreate(&pDevExt->mtxLdr); #else rc = RTSemFastMutexCreate(&pDevExt->mtxLdr); #endif if (RT_SUCCESS(rc)) #ifdef SUPDRV_USE_MUTEX_FOR_GIP rc = RTSemMutexCreate(&pDevExt->mtxTscDelta); #else rc = RTSemFastMutexCreate(&pDevExt->mtxTscDelta); #endif if (RT_SUCCESS(rc)) { rc = RTSemFastMutexCreate(&pDevExt->mtxComponentFactory); if (RT_SUCCESS(rc)) { #ifdef SUPDRV_USE_MUTEX_FOR_GIP rc = RTSemMutexCreate(&pDevExt->mtxGip); #else rc = RTSemFastMutexCreate(&pDevExt->mtxGip); #endif if (RT_SUCCESS(rc)) { rc = supdrvGipCreate(pDevExt); if (RT_SUCCESS(rc)) { rc = supdrvTracerInit(pDevExt); if (RT_SUCCESS(rc)) { pDevExt->pLdrInitImage = NULL; pDevExt->hLdrInitThread = NIL_RTNATIVETHREAD; pDevExt->u32Cookie = BIRD; /** @todo make this random? */ pDevExt->cbSession = (uint32_t)cbSession; /* * Fixup the absolute symbols. * * Because of the table indexing assumptions we'll have a little #ifdef orgy * here rather than distributing this to OS specific files. At least for now. */ #ifdef RT_OS_DARWIN # if ARCH_BITS == 32 if (SUPR0GetPagingMode() >= SUPPAGINGMODE_AMD64) { g_aFunctions[0].pfn = (void *)1; /* SUPR0AbsIs64bit */ g_aFunctions[1].pfn = (void *)0x80; /* SUPR0Abs64bitKernelCS - KERNEL64_CS, seg.h */ g_aFunctions[2].pfn = (void *)0x88; /* SUPR0Abs64bitKernelSS - KERNEL64_SS, seg.h */ g_aFunctions[3].pfn = (void *)0x88; /* SUPR0Abs64bitKernelDS - KERNEL64_SS, seg.h */ } else g_aFunctions[0].pfn = g_aFunctions[1].pfn = g_aFunctions[2].pfn = g_aFunctions[3].pfn = (void *)0; g_aFunctions[4].pfn = (void *)0x08; /* SUPR0AbsKernelCS - KERNEL_CS, seg.h */ g_aFunctions[5].pfn = (void *)0x10; /* SUPR0AbsKernelSS - KERNEL_DS, seg.h */ g_aFunctions[6].pfn = (void *)0x10; /* SUPR0AbsKernelDS - KERNEL_DS, seg.h */ g_aFunctions[7].pfn = (void *)0x10; /* SUPR0AbsKernelES - KERNEL_DS, seg.h */ g_aFunctions[8].pfn = (void *)0x10; /* SUPR0AbsKernelFS - KERNEL_DS, seg.h */ g_aFunctions[9].pfn = (void *)0x48; /* SUPR0AbsKernelGS - CPU_DATA_GS, seg.h */ # else /* 64-bit darwin: */ g_aFunctions[0].pfn = (void *)1; /* SUPR0AbsIs64bit */ g_aFunctions[1].pfn = (void *)(uintptr_t)ASMGetCS(); /* SUPR0Abs64bitKernelCS */ g_aFunctions[2].pfn = (void *)(uintptr_t)ASMGetSS(); /* SUPR0Abs64bitKernelSS */ g_aFunctions[3].pfn = (void *)0; /* SUPR0Abs64bitKernelDS */ g_aFunctions[4].pfn = (void *)(uintptr_t)ASMGetCS(); /* SUPR0AbsKernelCS */ g_aFunctions[5].pfn = (void *)(uintptr_t)ASMGetSS(); /* SUPR0AbsKernelSS */ g_aFunctions[6].pfn = (void *)0; /* SUPR0AbsKernelDS */ g_aFunctions[7].pfn = (void *)0; /* SUPR0AbsKernelES */ g_aFunctions[8].pfn = (void *)0; /* SUPR0AbsKernelFS */ g_aFunctions[9].pfn = (void *)0; /* SUPR0AbsKernelGS */ # endif #else /* !RT_OS_DARWIN */ # if ARCH_BITS == 64 g_aFunctions[0].pfn = (void *)1; /* SUPR0AbsIs64bit */ g_aFunctions[1].pfn = (void *)(uintptr_t)ASMGetCS(); /* SUPR0Abs64bitKernelCS */ g_aFunctions[2].pfn = (void *)(uintptr_t)ASMGetSS(); /* SUPR0Abs64bitKernelSS */ g_aFunctions[3].pfn = (void *)(uintptr_t)ASMGetDS(); /* SUPR0Abs64bitKernelDS */ # else g_aFunctions[0].pfn = g_aFunctions[1].pfn = g_aFunctions[2].pfn = g_aFunctions[3].pfn = (void *)0; # endif g_aFunctions[4].pfn = (void *)(uintptr_t)ASMGetCS(); /* SUPR0AbsKernelCS */ g_aFunctions[5].pfn = (void *)(uintptr_t)ASMGetSS(); /* SUPR0AbsKernelSS */ g_aFunctions[6].pfn = (void *)(uintptr_t)ASMGetDS(); /* SUPR0AbsKernelDS */ g_aFunctions[7].pfn = (void *)(uintptr_t)ASMGetES(); /* SUPR0AbsKernelES */ g_aFunctions[8].pfn = (void *)(uintptr_t)ASMGetFS(); /* SUPR0AbsKernelFS */ g_aFunctions[9].pfn = (void *)(uintptr_t)ASMGetGS(); /* SUPR0AbsKernelGS */ #endif /* !RT_OS_DARWIN */ return VINF_SUCCESS; } supdrvGipDestroy(pDevExt); } #ifdef SUPDRV_USE_MUTEX_FOR_GIP RTSemMutexDestroy(pDevExt->mtxGip); pDevExt->mtxGip = NIL_RTSEMMUTEX; #else RTSemFastMutexDestroy(pDevExt->mtxGip); pDevExt->mtxGip = NIL_RTSEMFASTMUTEX; #endif } RTSemFastMutexDestroy(pDevExt->mtxComponentFactory); pDevExt->mtxComponentFactory = NIL_RTSEMFASTMUTEX; } } #ifdef SUPDRV_USE_MUTEX_FOR_GIP RTSemMutexDestroy(pDevExt->mtxTscDelta); pDevExt->mtxTscDelta = NIL_RTSEMMUTEX; #else RTSemFastMutexDestroy(pDevExt->mtxTscDelta); pDevExt->mtxTscDelta = NIL_RTSEMFASTMUTEX; #endif #ifdef SUPDRV_USE_MUTEX_FOR_LDR RTSemMutexDestroy(pDevExt->mtxLdr); pDevExt->mtxLdr = NIL_RTSEMMUTEX; #else RTSemFastMutexDestroy(pDevExt->mtxLdr); pDevExt->mtxLdr = NIL_RTSEMFASTMUTEX; #endif RTSpinlockDestroy(pDevExt->Spinlock); pDevExt->Spinlock = NIL_RTSPINLOCK; RTSpinlockDestroy(pDevExt->hGipSpinlock); pDevExt->hGipSpinlock = NIL_RTSPINLOCK; RTSpinlockDestroy(pDevExt->hSessionHashTabSpinlock); pDevExt->hSessionHashTabSpinlock = NIL_RTSPINLOCK; #ifdef SUPDRV_WITH_RELEASE_LOGGER RTLogDestroy(RTLogRelSetDefaultInstance(NULL)); RTLogDestroy(RTLogSetDefaultInstance(NULL)); #endif return rc; } /** * Delete the device extension (e.g. cleanup members). * * @param pDevExt The device extension to delete. */ void VBOXCALL supdrvDeleteDevExt(PSUPDRVDEVEXT pDevExt) { PSUPDRVOBJ pObj; PSUPDRVUSAGE pUsage; /* * Kill mutexes and spinlocks. */ #ifdef SUPDRV_USE_MUTEX_FOR_GIP RTSemMutexDestroy(pDevExt->mtxGip); pDevExt->mtxGip = NIL_RTSEMMUTEX; RTSemMutexDestroy(pDevExt->mtxTscDelta); pDevExt->mtxTscDelta = NIL_RTSEMMUTEX; #else RTSemFastMutexDestroy(pDevExt->mtxGip); pDevExt->mtxGip = NIL_RTSEMFASTMUTEX; RTSemFastMutexDestroy(pDevExt->mtxTscDelta); pDevExt->mtxTscDelta = NIL_RTSEMFASTMUTEX; #endif #ifdef SUPDRV_USE_MUTEX_FOR_LDR RTSemMutexDestroy(pDevExt->mtxLdr); pDevExt->mtxLdr = NIL_RTSEMMUTEX; #else RTSemFastMutexDestroy(pDevExt->mtxLdr); pDevExt->mtxLdr = NIL_RTSEMFASTMUTEX; #endif RTSpinlockDestroy(pDevExt->Spinlock); pDevExt->Spinlock = NIL_RTSPINLOCK; RTSemFastMutexDestroy(pDevExt->mtxComponentFactory); pDevExt->mtxComponentFactory = NIL_RTSEMFASTMUTEX; RTSpinlockDestroy(pDevExt->hSessionHashTabSpinlock); pDevExt->hSessionHashTabSpinlock = NIL_RTSPINLOCK; /* * Free lists. */ /* objects. */ pObj = pDevExt->pObjs; Assert(!pObj); /* (can trigger on forced unloads) */ pDevExt->pObjs = NULL; while (pObj) { void *pvFree = pObj; pObj = pObj->pNext; RTMemFree(pvFree); } /* usage records. */ pUsage = pDevExt->pUsageFree; pDevExt->pUsageFree = NULL; while (pUsage) { void *pvFree = pUsage; pUsage = pUsage->pNext; RTMemFree(pvFree); } /* kill the GIP. */ supdrvGipDestroy(pDevExt); RTSpinlockDestroy(pDevExt->hGipSpinlock); pDevExt->hGipSpinlock = NIL_RTSPINLOCK; supdrvTracerTerm(pDevExt); #ifdef SUPDRV_WITH_RELEASE_LOGGER /* destroy the loggers. */ RTLogDestroy(RTLogRelSetDefaultInstance(NULL)); RTLogDestroy(RTLogSetDefaultInstance(NULL)); #endif } /** * Create session. * * @returns IPRT status code. * @param pDevExt Device extension. * @param fUser Flag indicating whether this is a user or kernel * session. * @param fUnrestricted Unrestricted access (system) or restricted access * (user)? * @param ppSession Where to store the pointer to the session data. */ int VBOXCALL supdrvCreateSession(PSUPDRVDEVEXT pDevExt, bool fUser, bool fUnrestricted, PSUPDRVSESSION *ppSession) { int rc; PSUPDRVSESSION pSession; if (!SUP_IS_DEVEXT_VALID(pDevExt)) return VERR_INVALID_PARAMETER; /* * Allocate memory for the session data. */ pSession = *ppSession = (PSUPDRVSESSION)RTMemAllocZ(pDevExt->cbSession); if (pSession) { /* Initialize session data. */ rc = RTSpinlockCreate(&pSession->Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_UNSAFE, "SUPDrvSession"); if (!rc) { rc = RTHandleTableCreateEx(&pSession->hHandleTable, RTHANDLETABLE_FLAGS_LOCKED_IRQ_SAFE | RTHANDLETABLE_FLAGS_CONTEXT, 1 /*uBase*/, 32768 /*cMax*/, supdrvSessionObjHandleRetain, pSession); if (RT_SUCCESS(rc)) { Assert(pSession->Spinlock != NIL_RTSPINLOCK); pSession->pDevExt = pDevExt; pSession->u32Cookie = BIRD_INV; pSession->fUnrestricted = fUnrestricted; /*pSession->fInHashTable = false; */ pSession->cRefs = 1; /*pSession->pCommonNextHash = NULL; pSession->ppOsSessionPtr = NULL; */ if (fUser) { pSession->Process = RTProcSelf(); pSession->R0Process = RTR0ProcHandleSelf(); } else { pSession->Process = NIL_RTPROCESS; pSession->R0Process = NIL_RTR0PROCESS; } /*pSession->pLdrUsage = NULL; pSession->pVM = NULL; pSession->pUsage = NULL; pSession->pGip = NULL; pSession->fGipReferenced = false; pSession->Bundle.cUsed = 0; */ pSession->Uid = NIL_RTUID; pSession->Gid = NIL_RTGID; /*pSession->uTracerData = 0;*/ pSession->hTracerCaller = NIL_RTNATIVETHREAD; RTListInit(&pSession->TpProviders); /*pSession->cTpProviders = 0;*/ /*pSession->cTpProbesFiring = 0;*/ RTListInit(&pSession->TpUmods); /*RT_ZERO(pSession->apTpLookupTable);*/ VBOXDRV_SESSION_CREATE(pSession, fUser); LogFlow(("Created session %p initial cookie=%#x\n", pSession, pSession->u32Cookie)); return VINF_SUCCESS; } RTSpinlockDestroy(pSession->Spinlock); } RTMemFree(pSession); *ppSession = NULL; Log(("Failed to create spinlock, rc=%d!\n", rc)); } else rc = VERR_NO_MEMORY; return rc; } /** * Cleans up the session in the context of the process to which it belongs, the * caller will free the session and the session spinlock. * * This should normally occur when the session is closed or as the process * exits. Careful reference counting in the OS specfic code makes sure that * there cannot be any races between process/handle cleanup callbacks and * threads doing I/O control calls. * * @param pDevExt The device extension. * @param pSession Session data. */ static void supdrvCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession) { int rc; PSUPDRVBUNDLE pBundle; LogFlow(("supdrvCleanupSession: pSession=%p\n", pSession)); Assert(!pSession->fInHashTable); Assert(!pSession->ppOsSessionPtr); AssertLogRelMsg(pSession->R0Process == RTR0ProcHandleSelf() || pSession->R0Process == NIL_RTR0PROCESS, ("R0Process=%p cur=%p; curpid=%u\n", pSession->R0Process, RTR0ProcHandleSelf(), RTProcSelf())); /* * Remove logger instances related to this session. */ RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pSession); /* * Destroy the handle table. */ rc = RTHandleTableDestroy(pSession->hHandleTable, supdrvSessionObjHandleDelete, pSession); AssertRC(rc); pSession->hHandleTable = NIL_RTHANDLETABLE; /* * Release object references made in this session. * In theory there should be noone racing us in this session. */ Log2(("release objects - start\n")); if (pSession->pUsage) { PSUPDRVUSAGE pUsage; RTSpinlockAcquire(pDevExt->Spinlock); while ((pUsage = pSession->pUsage) != NULL) { PSUPDRVOBJ pObj = pUsage->pObj; pSession->pUsage = pUsage->pNext; AssertMsg(pUsage->cUsage >= 1 && pObj->cUsage >= pUsage->cUsage, ("glob %d; sess %d\n", pObj->cUsage, pUsage->cUsage)); if (pUsage->cUsage < pObj->cUsage) { pObj->cUsage -= pUsage->cUsage; RTSpinlockRelease(pDevExt->Spinlock); } else { /* Destroy the object and free the record. */ if (pDevExt->pObjs == pObj) pDevExt->pObjs = pObj->pNext; else { PSUPDRVOBJ pObjPrev; for (pObjPrev = pDevExt->pObjs; pObjPrev; pObjPrev = pObjPrev->pNext) if (pObjPrev->pNext == pObj) { pObjPrev->pNext = pObj->pNext; break; } Assert(pObjPrev); } RTSpinlockRelease(pDevExt->Spinlock); Log(("supdrvCleanupSession: destroying %p/%d (%p/%p) cpid=%RTproc pid=%RTproc dtor=%p\n", pObj, pObj->enmType, pObj->pvUser1, pObj->pvUser2, pObj->CreatorProcess, RTProcSelf(), pObj->pfnDestructor)); if (pObj->pfnDestructor) pObj->pfnDestructor(pObj, pObj->pvUser1, pObj->pvUser2); RTMemFree(pObj); } /* free it and continue. */ RTMemFree(pUsage); RTSpinlockAcquire(pDevExt->Spinlock); } RTSpinlockRelease(pDevExt->Spinlock); AssertMsg(!pSession->pUsage, ("Some buster reregistered an object during desturction!\n")); } Log2(("release objects - done\n")); /* * Make sure the associated VM pointers are NULL. */ if (pSession->pSessionGVM || pSession->pSessionVM || pSession->pFastIoCtrlVM) { SUPR0Printf("supdrvCleanupSession: VM not disassociated! pSessionGVM=%p pSessionVM=%p pFastIoCtrlVM=%p\n", pSession->pSessionGVM, pSession->pSessionVM, pSession->pFastIoCtrlVM); pSession->pSessionGVM = NULL; pSession->pSessionVM = NULL; pSession->pFastIoCtrlVM = NULL; } /* * Do tracer cleanups related to this session. */ Log2(("release tracer stuff - start\n")); supdrvTracerCleanupSession(pDevExt, pSession); Log2(("release tracer stuff - end\n")); /* * Release memory allocated in the session. * * We do not serialize this as we assume that the application will * not allocated memory while closing the file handle object. */ Log2(("freeing memory:\n")); pBundle = &pSession->Bundle; while (pBundle) { PSUPDRVBUNDLE pToFree; unsigned i; /* * Check and unlock all entries in the bundle. */ for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++) { if (pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ) { Log2(("eType=%d pvR0=%p pvR3=%p cb=%ld\n", pBundle->aMem[i].eType, RTR0MemObjAddress(pBundle->aMem[i].MemObj), (void *)RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3), (long)RTR0MemObjSize(pBundle->aMem[i].MemObj))); if (pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ) { rc = RTR0MemObjFree(pBundle->aMem[i].MapObjR3, false); AssertRC(rc); /** @todo figure out how to handle this. */ pBundle->aMem[i].MapObjR3 = NIL_RTR0MEMOBJ; } rc = RTR0MemObjFree(pBundle->aMem[i].MemObj, true /* fFreeMappings */); AssertRC(rc); /** @todo figure out how to handle this. */ pBundle->aMem[i].MemObj = NIL_RTR0MEMOBJ; pBundle->aMem[i].eType = MEMREF_TYPE_UNUSED; } } /* * Advance and free previous bundle. */ pToFree = pBundle; pBundle = pBundle->pNext; pToFree->pNext = NULL; pToFree->cUsed = 0; if (pToFree != &pSession->Bundle) RTMemFree(pToFree); } Log2(("freeing memory - done\n")); /* * Deregister component factories. */ RTSemFastMutexRequest(pDevExt->mtxComponentFactory); Log2(("deregistering component factories:\n")); if (pDevExt->pComponentFactoryHead) { PSUPDRVFACTORYREG pPrev = NULL; PSUPDRVFACTORYREG pCur = pDevExt->pComponentFactoryHead; while (pCur) { if (pCur->pSession == pSession) { /* unlink it */ PSUPDRVFACTORYREG pNext = pCur->pNext; if (pPrev) pPrev->pNext = pNext; else pDevExt->pComponentFactoryHead = pNext; /* free it */ pCur->pNext = NULL; pCur->pSession = NULL; pCur->pFactory = NULL; RTMemFree(pCur); /* next */ pCur = pNext; } else { /* next */ pPrev = pCur; pCur = pCur->pNext; } } } RTSemFastMutexRelease(pDevExt->mtxComponentFactory); Log2(("deregistering component factories - done\n")); /* * Loaded images needs to be dereferenced and possibly freed up. */ supdrvLdrLock(pDevExt); Log2(("freeing images:\n")); if (pSession->pLdrUsage) { PSUPDRVLDRUSAGE pUsage = pSession->pLdrUsage; pSession->pLdrUsage = NULL; while (pUsage) { void *pvFree = pUsage; PSUPDRVLDRIMAGE pImage = pUsage->pImage; if (pImage->cUsage > pUsage->cUsage) pImage->cUsage -= pUsage->cUsage; else supdrvLdrFree(pDevExt, pImage); pUsage->pImage = NULL; pUsage = pUsage->pNext; RTMemFree(pvFree); } } supdrvLdrUnlock(pDevExt); Log2(("freeing images - done\n")); /* * Unmap the GIP. */ Log2(("umapping GIP:\n")); if (pSession->GipMapObjR3 != NIL_RTR0MEMOBJ) { SUPR0GipUnmap(pSession); pSession->fGipReferenced = 0; } Log2(("umapping GIP - done\n")); } /** * Common code for freeing a session when the reference count reaches zero. * * @param pDevExt Device extension. * @param pSession Session data. * This data will be freed by this routine. */ static void supdrvDestroySession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession) { VBOXDRV_SESSION_CLOSE(pSession); /* * Cleanup the session first. */ supdrvCleanupSession(pDevExt, pSession); supdrvOSCleanupSession(pDevExt, pSession); /* * Free the rest of the session stuff. */ RTSpinlockDestroy(pSession->Spinlock); pSession->Spinlock = NIL_RTSPINLOCK; pSession->pDevExt = NULL; RTMemFree(pSession); LogFlow(("supdrvDestroySession: returns\n")); } /** * Inserts the session into the global hash table. * * @retval VINF_SUCCESS on success. * @retval VERR_WRONG_ORDER if the session was already inserted (asserted). * @retval VERR_INVALID_PARAMETER if the session handle is invalid or a ring-0 * session (asserted). * @retval VERR_DUPLICATE if there is already a session for that pid. * * @param pDevExt The device extension. * @param pSession The session. * @param ppOsSessionPtr Pointer to the OS session pointer, if any is * available and used. This will set to point to the * session while under the protection of the session * hash table spinlock. It will also be kept in * PSUPDRVSESSION::ppOsSessionPtr for lookup and * cleanup use. * @param pvUser Argument for supdrvOSSessionHashTabInserted. */ int VBOXCALL supdrvSessionHashTabInsert(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVSESSION *ppOsSessionPtr, void *pvUser) { PSUPDRVSESSION pCur; unsigned iHash; /* * Validate input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertReturn(pSession->R0Process != NIL_RTR0PROCESS, VERR_INVALID_PARAMETER); /* * Calculate the hash table index and acquire the spinlock. */ iHash = SUPDRV_SESSION_HASH(pSession->Process); RTSpinlockAcquire(pDevExt->hSessionHashTabSpinlock); /* * If there are a collisions, we need to carefully check if we got a * duplicate. There can only be one open session per process. */ pCur = pDevExt->apSessionHashTab[iHash]; if (pCur) { while (pCur && pCur->Process != pSession->Process) pCur = pCur->pCommonNextHash; if (pCur) { RTSpinlockRelease(pDevExt->hSessionHashTabSpinlock); if (pCur == pSession) { Assert(pSession->fInHashTable); AssertFailed(); return VERR_WRONG_ORDER; } Assert(!pSession->fInHashTable); if (pCur->R0Process == pSession->R0Process) return VERR_RESOURCE_IN_USE; return VERR_DUPLICATE; } } Assert(!pSession->fInHashTable); Assert(!pSession->ppOsSessionPtr); /* * Insert it, doing a callout to the OS specific code in case it has * anything it wishes to do while we're holding the spinlock. */ pSession->pCommonNextHash = pDevExt->apSessionHashTab[iHash]; pDevExt->apSessionHashTab[iHash] = pSession; pSession->fInHashTable = true; ASMAtomicIncS32(&pDevExt->cSessions); pSession->ppOsSessionPtr = ppOsSessionPtr; if (ppOsSessionPtr) ASMAtomicWritePtr(ppOsSessionPtr, pSession); supdrvOSSessionHashTabInserted(pDevExt, pSession, pvUser); /* * Retain a reference for the pointer in the session table. */ ASMAtomicIncU32(&pSession->cRefs); RTSpinlockRelease(pDevExt->hSessionHashTabSpinlock); return VINF_SUCCESS; } /** * Removes the session from the global hash table. * * @retval VINF_SUCCESS on success. * @retval VERR_NOT_FOUND if the session was already removed (asserted). * @retval VERR_INVALID_PARAMETER if the session handle is invalid or a ring-0 * session (asserted). * * @param pDevExt The device extension. * @param pSession The session. The caller is expected to have a reference * to this so it won't croak on us when we release the hash * table reference. * @param pvUser OS specific context value for the * supdrvOSSessionHashTabInserted callback. */ int VBOXCALL supdrvSessionHashTabRemove(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser) { PSUPDRVSESSION pCur; unsigned iHash; int32_t cRefs; /* * Validate input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertReturn(pSession->R0Process != NIL_RTR0PROCESS, VERR_INVALID_PARAMETER); /* * Calculate the hash table index and acquire the spinlock. */ iHash = SUPDRV_SESSION_HASH(pSession->Process); RTSpinlockAcquire(pDevExt->hSessionHashTabSpinlock); /* * Unlink it. */ pCur = pDevExt->apSessionHashTab[iHash]; if (pCur == pSession) pDevExt->apSessionHashTab[iHash] = pSession->pCommonNextHash; else { PSUPDRVSESSION pPrev = pCur; while (pCur && pCur != pSession) { pPrev = pCur; pCur = pCur->pCommonNextHash; } if (pCur) pPrev->pCommonNextHash = pCur->pCommonNextHash; else { Assert(!pSession->fInHashTable); RTSpinlockRelease(pDevExt->hSessionHashTabSpinlock); return VERR_NOT_FOUND; } } pSession->pCommonNextHash = NULL; pSession->fInHashTable = false; ASMAtomicDecS32(&pDevExt->cSessions); /* * Clear OS specific session pointer if available and do the OS callback. */ if (pSession->ppOsSessionPtr) { ASMAtomicCmpXchgPtr(pSession->ppOsSessionPtr, NULL, pSession); pSession->ppOsSessionPtr = NULL; } supdrvOSSessionHashTabRemoved(pDevExt, pSession, pvUser); RTSpinlockRelease(pDevExt->hSessionHashTabSpinlock); /* * Drop the reference the hash table had to the session. This shouldn't * be the last reference! */ cRefs = ASMAtomicDecU32(&pSession->cRefs); Assert(cRefs > 0 && cRefs < _1M); if (cRefs == 0) supdrvDestroySession(pDevExt, pSession); return VINF_SUCCESS; } /** * Looks up the session for the current process in the global hash table or in * OS specific pointer. * * @returns Pointer to the session with a reference that the caller must * release. If no valid session was found, NULL is returned. * * @param pDevExt The device extension. * @param Process The process ID. * @param R0Process The ring-0 process handle. * @param ppOsSessionPtr The OS session pointer if available. If not NULL, * this is used instead of the hash table. For * additional safety it must then be equal to the * SUPDRVSESSION::ppOsSessionPtr member. * This can be NULL even if the OS has a session * pointer. */ PSUPDRVSESSION VBOXCALL supdrvSessionHashTabLookup(PSUPDRVDEVEXT pDevExt, RTPROCESS Process, RTR0PROCESS R0Process, PSUPDRVSESSION *ppOsSessionPtr) { PSUPDRVSESSION pCur; unsigned iHash; /* * Validate input. */ AssertReturn(R0Process != NIL_RTR0PROCESS, NULL); /* * Calculate the hash table index and acquire the spinlock. */ iHash = SUPDRV_SESSION_HASH(Process); RTSpinlockAcquire(pDevExt->hSessionHashTabSpinlock); /* * If an OS session pointer is provided, always use it. */ if (ppOsSessionPtr) { pCur = *ppOsSessionPtr; if ( pCur && ( pCur->ppOsSessionPtr != ppOsSessionPtr || pCur->Process != Process || pCur->R0Process != R0Process) ) pCur = NULL; } else { /* * Otherwise, do the hash table lookup. */ pCur = pDevExt->apSessionHashTab[iHash]; while ( pCur && ( pCur->Process != Process || pCur->R0Process != R0Process) ) pCur = pCur->pCommonNextHash; } /* * Retain the session. */ if (pCur) { uint32_t cRefs = ASMAtomicIncU32(&pCur->cRefs); NOREF(cRefs); Assert(cRefs > 1 && cRefs < _1M); } RTSpinlockRelease(pDevExt->hSessionHashTabSpinlock); return pCur; } /** * Retain a session to make sure it doesn't go away while it is in use. * * @returns New reference count on success, UINT32_MAX on failure. * @param pSession Session data. */ uint32_t VBOXCALL supdrvSessionRetain(PSUPDRVSESSION pSession) { uint32_t cRefs; AssertPtrReturn(pSession, UINT32_MAX); AssertReturn(SUP_IS_SESSION_VALID(pSession), UINT32_MAX); cRefs = ASMAtomicIncU32(&pSession->cRefs); AssertMsg(cRefs > 1 && cRefs < _1M, ("%#x %p\n", cRefs, pSession)); return cRefs; } /** * Releases a given session. * * @returns New reference count on success (0 if closed), UINT32_MAX on failure. * @param pSession Session data. */ uint32_t VBOXCALL supdrvSessionRelease(PSUPDRVSESSION pSession) { uint32_t cRefs; AssertPtrReturn(pSession, UINT32_MAX); AssertReturn(SUP_IS_SESSION_VALID(pSession), UINT32_MAX); cRefs = ASMAtomicDecU32(&pSession->cRefs); AssertMsg(cRefs < _1M, ("%#x %p\n", cRefs, pSession)); if (cRefs == 0) supdrvDestroySession(pSession->pDevExt, pSession); return cRefs; } /** * RTHandleTableDestroy callback used by supdrvCleanupSession. * * @returns IPRT status code, see SUPR0ObjAddRef. * @param hHandleTable The handle table handle. Ignored. * @param pvObj The object pointer. * @param pvCtx Context, the handle type. Ignored. * @param pvUser Session pointer. */ static DECLCALLBACK(int) supdrvSessionObjHandleRetain(RTHANDLETABLE hHandleTable, void *pvObj, void *pvCtx, void *pvUser) { NOREF(pvCtx); NOREF(hHandleTable); return SUPR0ObjAddRefEx(pvObj, (PSUPDRVSESSION)pvUser, true /*fNoBlocking*/); } /** * RTHandleTableDestroy callback used by supdrvCleanupSession. * * @param hHandleTable The handle table handle. Ignored. * @param h The handle value. Ignored. * @param pvObj The object pointer. * @param pvCtx Context, the handle type. Ignored. * @param pvUser Session pointer. */ static DECLCALLBACK(void) supdrvSessionObjHandleDelete(RTHANDLETABLE hHandleTable, uint32_t h, void *pvObj, void *pvCtx, void *pvUser) { NOREF(pvCtx); NOREF(h); NOREF(hHandleTable); SUPR0ObjRelease(pvObj, (PSUPDRVSESSION)pvUser); } /** * Fast path I/O Control worker. * * @returns VBox status code that should be passed down to ring-3 unchanged. * @param uOperation SUP_VMMR0_DO_XXX (not the I/O control number!). * @param idCpu VMCPU id. * @param pDevExt Device extention. * @param pSession Session data. */ int VBOXCALL supdrvIOCtlFast(uintptr_t uOperation, VMCPUID idCpu, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession) { /* * Validate input and check that the VM has a session. */ if (RT_LIKELY(RT_VALID_PTR(pSession))) { PVM pVM = pSession->pSessionVM; PGVM pGVM = pSession->pSessionGVM; if (RT_LIKELY( pGVM != NULL && pVM != NULL && pVM == pSession->pFastIoCtrlVM)) { if (RT_LIKELY(pDevExt->pfnVMMR0EntryFast)) { /* * Make the call. */ pDevExt->pfnVMMR0EntryFast(pGVM, pVM, idCpu, uOperation); return VINF_SUCCESS; } SUPR0Printf("supdrvIOCtlFast: pfnVMMR0EntryFast is NULL\n"); } else SUPR0Printf("supdrvIOCtlFast: Misconfig session: pGVM=%p pVM=%p pFastIoCtrlVM=%p\n", pGVM, pVM, pSession->pFastIoCtrlVM); } else SUPR0Printf("supdrvIOCtlFast: Bad session pointer %p\n", pSession); return VERR_INTERNAL_ERROR; } /** * Helper for supdrvIOCtl used to validate module names passed to SUP_IOCTL_LDR_OPEN. * * Check if pszStr contains any character of pszChars. We would use strpbrk * here if this function would be contained in the RedHat kABI white list, see * http://www.kerneldrivers.org/RHEL5. * * @returns true if fine, false if not. * @param pszName The module name to check. */ static bool supdrvIsLdrModuleNameValid(const char *pszName) { int chCur; while ((chCur = *pszName++) != '\0') { static const char s_szInvalidChars[] = ";:()[]{}/\\|&*%#@!~`\"'"; unsigned offInv = RT_ELEMENTS(s_szInvalidChars); while (offInv-- > 0) if (s_szInvalidChars[offInv] == chCur) return false; } return true; } /** * I/O Control inner worker (tracing reasons). * * @returns IPRT status code. * @retval VERR_INVALID_PARAMETER if the request is invalid. * * @param uIOCtl Function number. * @param pDevExt Device extention. * @param pSession Session data. * @param pReqHdr The request header. */ static int supdrvIOCtlInnerUnrestricted(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr) { /* * Validation macros */ #define REQ_CHECK_SIZES_EX(Name, cbInExpect, cbOutExpect) \ do { \ if (RT_UNLIKELY(pReqHdr->cbIn != (cbInExpect) || pReqHdr->cbOut != (cbOutExpect))) \ { \ OSDBGPRINT(( #Name ": Invalid input/output sizes. cbIn=%ld expected %ld. cbOut=%ld expected %ld.\n", \ (long)pReqHdr->cbIn, (long)(cbInExpect), (long)pReqHdr->cbOut, (long)(cbOutExpect))); \ return pReqHdr->rc = VERR_INVALID_PARAMETER; \ } \ } while (0) #define REQ_CHECK_SIZES(Name) REQ_CHECK_SIZES_EX(Name, Name ## _SIZE_IN, Name ## _SIZE_OUT) #define REQ_CHECK_SIZE_IN(Name, cbInExpect) \ do { \ if (RT_UNLIKELY(pReqHdr->cbIn != (cbInExpect))) \ { \ OSDBGPRINT(( #Name ": Invalid input/output sizes. cbIn=%ld expected %ld.\n", \ (long)pReqHdr->cbIn, (long)(cbInExpect))); \ return pReqHdr->rc = VERR_INVALID_PARAMETER; \ } \ } while (0) #define REQ_CHECK_SIZE_OUT(Name, cbOutExpect) \ do { \ if (RT_UNLIKELY(pReqHdr->cbOut != (cbOutExpect))) \ { \ OSDBGPRINT(( #Name ": Invalid input/output sizes. cbOut=%ld expected %ld.\n", \ (long)pReqHdr->cbOut, (long)(cbOutExpect))); \ return pReqHdr->rc = VERR_INVALID_PARAMETER; \ } \ } while (0) #define REQ_CHECK_EXPR(Name, expr) \ do { \ if (RT_UNLIKELY(!(expr))) \ { \ OSDBGPRINT(( #Name ": %s\n", #expr)); \ return pReqHdr->rc = VERR_INVALID_PARAMETER; \ } \ } while (0) #define REQ_CHECK_EXPR_FMT(expr, fmt) \ do { \ if (RT_UNLIKELY(!(expr))) \ { \ OSDBGPRINT( fmt ); \ return pReqHdr->rc = VERR_INVALID_PARAMETER; \ } \ } while (0) /* * The switch. */ switch (SUP_CTL_CODE_NO_SIZE(uIOCtl)) { case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_COOKIE): { PSUPCOOKIE pReq = (PSUPCOOKIE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_COOKIE); if (strncmp(pReq->u.In.szMagic, SUPCOOKIE_MAGIC, sizeof(pReq->u.In.szMagic))) { OSDBGPRINT(("SUP_IOCTL_COOKIE: invalid magic %.16s\n", pReq->u.In.szMagic)); pReq->Hdr.rc = VERR_INVALID_MAGIC; return 0; } #if 0 /* * Call out to the OS specific code and let it do permission checks on the * client process. */ if (!supdrvOSValidateClientProcess(pDevExt, pSession)) { pReq->u.Out.u32Cookie = 0xffffffff; pReq->u.Out.u32SessionCookie = 0xffffffff; pReq->u.Out.u32SessionVersion = 0xffffffff; pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION; pReq->u.Out.pSession = NULL; pReq->u.Out.cFunctions = 0; pReq->Hdr.rc = VERR_PERMISSION_DENIED; return 0; } #endif /* * Match the version. * The current logic is very simple, match the major interface version. */ if ( pReq->u.In.u32MinVersion > SUPDRV_IOC_VERSION || (pReq->u.In.u32MinVersion & 0xffff0000) != (SUPDRV_IOC_VERSION & 0xffff0000)) { OSDBGPRINT(("SUP_IOCTL_COOKIE: Version mismatch. Requested: %#x Min: %#x Current: %#x\n", pReq->u.In.u32ReqVersion, pReq->u.In.u32MinVersion, SUPDRV_IOC_VERSION)); pReq->u.Out.u32Cookie = 0xffffffff; pReq->u.Out.u32SessionCookie = 0xffffffff; pReq->u.Out.u32SessionVersion = 0xffffffff; pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION; pReq->u.Out.pSession = NULL; pReq->u.Out.cFunctions = 0; pReq->Hdr.rc = VERR_VERSION_MISMATCH; return 0; } /* * Fill in return data and be gone. * N.B. The first one to change SUPDRV_IOC_VERSION shall makes sure that * u32SessionVersion <= u32ReqVersion! */ /** @todo Somehow validate the client and negotiate a secure cookie... */ pReq->u.Out.u32Cookie = pDevExt->u32Cookie; pReq->u.Out.u32SessionCookie = pSession->u32Cookie; pReq->u.Out.u32SessionVersion = SUPDRV_IOC_VERSION; pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION; pReq->u.Out.pSession = pSession; pReq->u.Out.cFunctions = sizeof(g_aFunctions) / sizeof(g_aFunctions[0]); pReq->Hdr.rc = VINF_SUCCESS; return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_QUERY_FUNCS(0)): { /* validate */ PSUPQUERYFUNCS pReq = (PSUPQUERYFUNCS)pReqHdr; REQ_CHECK_SIZES_EX(SUP_IOCTL_QUERY_FUNCS, SUP_IOCTL_QUERY_FUNCS_SIZE_IN, SUP_IOCTL_QUERY_FUNCS_SIZE_OUT(RT_ELEMENTS(g_aFunctions))); /* execute */ pReq->u.Out.cFunctions = RT_ELEMENTS(g_aFunctions); memcpy(&pReq->u.Out.aFunctions[0], g_aFunctions, sizeof(g_aFunctions)); pReq->Hdr.rc = VINF_SUCCESS; return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_LOCK): { /* validate */ PSUPPAGELOCK pReq = (PSUPPAGELOCK)pReqHdr; REQ_CHECK_SIZE_IN(SUP_IOCTL_PAGE_LOCK, SUP_IOCTL_PAGE_LOCK_SIZE_IN); REQ_CHECK_SIZE_OUT(SUP_IOCTL_PAGE_LOCK, SUP_IOCTL_PAGE_LOCK_SIZE_OUT(pReq->u.In.cPages)); REQ_CHECK_EXPR(SUP_IOCTL_PAGE_LOCK, pReq->u.In.cPages > 0); REQ_CHECK_EXPR(SUP_IOCTL_PAGE_LOCK, pReq->u.In.pvR3 >= PAGE_SIZE); /* execute */ pReq->Hdr.rc = SUPR0LockMem(pSession, pReq->u.In.pvR3, pReq->u.In.cPages, &pReq->u.Out.aPages[0]); if (RT_FAILURE(pReq->Hdr.rc)) pReq->Hdr.cbOut = sizeof(pReq->Hdr); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_UNLOCK): { /* validate */ PSUPPAGEUNLOCK pReq = (PSUPPAGEUNLOCK)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_PAGE_UNLOCK); /* execute */ pReq->Hdr.rc = SUPR0UnlockMem(pSession, pReq->u.In.pvR3); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CONT_ALLOC): { /* validate */ PSUPCONTALLOC pReq = (PSUPCONTALLOC)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_CONT_ALLOC); /* execute */ pReq->Hdr.rc = SUPR0ContAlloc(pSession, pReq->u.In.cPages, &pReq->u.Out.pvR0, &pReq->u.Out.pvR3, &pReq->u.Out.HCPhys); if (RT_FAILURE(pReq->Hdr.rc)) pReq->Hdr.cbOut = sizeof(pReq->Hdr); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CONT_FREE): { /* validate */ PSUPCONTFREE pReq = (PSUPCONTFREE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_CONT_FREE); /* execute */ pReq->Hdr.rc = SUPR0ContFree(pSession, (RTHCUINTPTR)pReq->u.In.pvR3); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_OPEN): { /* validate */ PSUPLDROPEN pReq = (PSUPLDROPEN)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_LDR_OPEN); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageWithTabs > 0); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageWithTabs < 16*_1M); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits > 0); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits > 0); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.cbImageBits < pReq->u.In.cbImageWithTabs); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, pReq->u.In.szName[0]); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName))); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, supdrvIsLdrModuleNameValid(pReq->u.In.szName)); REQ_CHECK_EXPR(SUP_IOCTL_LDR_OPEN, RTStrEnd(pReq->u.In.szFilename, sizeof(pReq->u.In.szFilename))); /* execute */ pReq->Hdr.rc = supdrvIOCtl_LdrOpen(pDevExt, pSession, pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_LOAD): { /* validate */ PSUPLDRLOAD pReq = (PSUPLDRLOAD)pReqHdr; REQ_CHECK_EXPR(Name, pReq->Hdr.cbIn >= SUP_IOCTL_LDR_LOAD_SIZE_IN(32)); REQ_CHECK_SIZES_EX(SUP_IOCTL_LDR_LOAD, SUP_IOCTL_LDR_LOAD_SIZE_IN(pReq->u.In.cbImageWithTabs), SUP_IOCTL_LDR_LOAD_SIZE_OUT); REQ_CHECK_EXPR(SUP_IOCTL_LDR_LOAD, pReq->u.In.cSymbols <= 16384); REQ_CHECK_EXPR_FMT( !pReq->u.In.cSymbols || ( pReq->u.In.offSymbols < pReq->u.In.cbImageWithTabs && pReq->u.In.offSymbols + pReq->u.In.cSymbols * sizeof(SUPLDRSYM) <= pReq->u.In.cbImageWithTabs), ("SUP_IOCTL_LDR_LOAD: offSymbols=%#lx cSymbols=%#lx cbImageWithTabs=%#lx\n", (long)pReq->u.In.offSymbols, (long)pReq->u.In.cSymbols, (long)pReq->u.In.cbImageWithTabs)); REQ_CHECK_EXPR_FMT( !pReq->u.In.cbStrTab || ( pReq->u.In.offStrTab < pReq->u.In.cbImageWithTabs && pReq->u.In.offStrTab + pReq->u.In.cbStrTab <= pReq->u.In.cbImageWithTabs && pReq->u.In.cbStrTab <= pReq->u.In.cbImageWithTabs), ("SUP_IOCTL_LDR_LOAD: offStrTab=%#lx cbStrTab=%#lx cbImageWithTabs=%#lx\n", (long)pReq->u.In.offStrTab, (long)pReq->u.In.cbStrTab, (long)pReq->u.In.cbImageWithTabs)); if (pReq->u.In.cSymbols) { uint32_t i; PSUPLDRSYM paSyms = (PSUPLDRSYM)&pReq->u.In.abImage[pReq->u.In.offSymbols]; for (i = 0; i < pReq->u.In.cSymbols; i++) { REQ_CHECK_EXPR_FMT(paSyms[i].offSymbol < pReq->u.In.cbImageWithTabs, ("SUP_IOCTL_LDR_LOAD: sym #%ld: symb off %#lx (max=%#lx)\n", (long)i, (long)paSyms[i].offSymbol, (long)pReq->u.In.cbImageWithTabs)); REQ_CHECK_EXPR_FMT(paSyms[i].offName < pReq->u.In.cbStrTab, ("SUP_IOCTL_LDR_LOAD: sym #%ld: name off %#lx (max=%#lx)\n", (long)i, (long)paSyms[i].offName, (long)pReq->u.In.cbImageWithTabs)); REQ_CHECK_EXPR_FMT(RTStrEnd((char const *)&pReq->u.In.abImage[pReq->u.In.offStrTab + paSyms[i].offName], pReq->u.In.cbStrTab - paSyms[i].offName), ("SUP_IOCTL_LDR_LOAD: sym #%ld: unterminated name! (%#lx / %#lx)\n", (long)i, (long)paSyms[i].offName, (long)pReq->u.In.cbImageWithTabs)); } } /* execute */ pReq->Hdr.rc = supdrvIOCtl_LdrLoad(pDevExt, pSession, pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_FREE): { /* validate */ PSUPLDRFREE pReq = (PSUPLDRFREE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_LDR_FREE); /* execute */ pReq->Hdr.rc = supdrvIOCtl_LdrFree(pDevExt, pSession, pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_LOCK_DOWN): { /* validate */ REQ_CHECK_SIZES(SUP_IOCTL_LDR_LOCK_DOWN); /* execute */ pReqHdr->rc = supdrvIOCtl_LdrLockDown(pDevExt); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LDR_GET_SYMBOL): { /* validate */ PSUPLDRGETSYMBOL pReq = (PSUPLDRGETSYMBOL)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_LDR_GET_SYMBOL); REQ_CHECK_EXPR(SUP_IOCTL_LDR_GET_SYMBOL, RTStrEnd(pReq->u.In.szSymbol, sizeof(pReq->u.In.szSymbol))); /* execute */ pReq->Hdr.rc = supdrvIOCtl_LdrQuerySymbol(pDevExt, pSession, pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_VMMR0_NO_SIZE()): { /* validate */ PSUPCALLVMMR0 pReq = (PSUPCALLVMMR0)pReqHdr; Log4(("SUP_IOCTL_CALL_VMMR0: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_VMMR0_SIZE(0)) { REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_VMMR0, SUP_IOCTL_CALL_VMMR0_SIZE_IN(0), SUP_IOCTL_CALL_VMMR0_SIZE_OUT(0)); /* execute */ if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx)) { if (pReq->u.In.pVMR0 == NULL) pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(NULL, NULL, pReq->u.In.idCpu, pReq->u.In.uOperation, NULL, pReq->u.In.u64Arg, pSession); else if (pReq->u.In.pVMR0 == pSession->pSessionVM) pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pSession->pSessionGVM, pSession->pSessionVM, pReq->u.In.idCpu, pReq->u.In.uOperation, NULL, pReq->u.In.u64Arg, pSession); else pReq->Hdr.rc = VERR_INVALID_VM_HANDLE; } else pReq->Hdr.rc = VERR_WRONG_ORDER; } else { PSUPVMMR0REQHDR pVMMReq = (PSUPVMMR0REQHDR)&pReq->abReqPkt[0]; REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_VMMR0_SIZE(sizeof(SUPVMMR0REQHDR)), ("SUP_IOCTL_CALL_VMMR0: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_VMMR0_SIZE(sizeof(SUPVMMR0REQHDR)))); REQ_CHECK_EXPR(SUP_IOCTL_CALL_VMMR0, pVMMReq->u32Magic == SUPVMMR0REQHDR_MAGIC); REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_VMMR0, SUP_IOCTL_CALL_VMMR0_SIZE_IN(pVMMReq->cbReq), SUP_IOCTL_CALL_VMMR0_SIZE_OUT(pVMMReq->cbReq)); /* execute */ if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx)) { if (pReq->u.In.pVMR0 == NULL) pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(NULL, NULL, pReq->u.In.idCpu, pReq->u.In.uOperation, pVMMReq, pReq->u.In.u64Arg, pSession); else if (pReq->u.In.pVMR0 == pSession->pSessionVM) pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pSession->pSessionGVM, pSession->pSessionVM, pReq->u.In.idCpu, pReq->u.In.uOperation, pVMMReq, pReq->u.In.u64Arg, pSession); else pReq->Hdr.rc = VERR_INVALID_VM_HANDLE; } else pReq->Hdr.rc = VERR_WRONG_ORDER; } if ( RT_FAILURE(pReq->Hdr.rc) && pReq->Hdr.rc != VERR_INTERRUPTED && pReq->Hdr.rc != VERR_TIMEOUT) Log(("SUP_IOCTL_CALL_VMMR0: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); else Log4(("SUP_IOCTL_CALL_VMMR0: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_VMMR0_BIG): { /* validate */ PSUPCALLVMMR0 pReq = (PSUPCALLVMMR0)pReqHdr; PSUPVMMR0REQHDR pVMMReq; Log4(("SUP_IOCTL_CALL_VMMR0_BIG: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); pVMMReq = (PSUPVMMR0REQHDR)&pReq->abReqPkt[0]; REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_VMMR0_BIG_SIZE(sizeof(SUPVMMR0REQHDR)), ("SUP_IOCTL_CALL_VMMR0_BIG: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_VMMR0_BIG_SIZE(sizeof(SUPVMMR0REQHDR)))); REQ_CHECK_EXPR(SUP_IOCTL_CALL_VMMR0_BIG, pVMMReq->u32Magic == SUPVMMR0REQHDR_MAGIC); REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_VMMR0_BIG, SUP_IOCTL_CALL_VMMR0_BIG_SIZE_IN(pVMMReq->cbReq), SUP_IOCTL_CALL_VMMR0_BIG_SIZE_OUT(pVMMReq->cbReq)); /* execute */ if (RT_LIKELY(pDevExt->pfnVMMR0EntryEx)) { if (pReq->u.In.pVMR0 == NULL) pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(NULL, NULL, pReq->u.In.idCpu, pReq->u.In.uOperation, pVMMReq, pReq->u.In.u64Arg, pSession); else if (pReq->u.In.pVMR0 == pSession->pSessionVM) pReq->Hdr.rc = pDevExt->pfnVMMR0EntryEx(pSession->pSessionGVM, pSession->pSessionVM, pReq->u.In.idCpu, pReq->u.In.uOperation, pVMMReq, pReq->u.In.u64Arg, pSession); else pReq->Hdr.rc = VERR_INVALID_VM_HANDLE; } else pReq->Hdr.rc = VERR_WRONG_ORDER; if ( RT_FAILURE(pReq->Hdr.rc) && pReq->Hdr.rc != VERR_INTERRUPTED && pReq->Hdr.rc != VERR_TIMEOUT) Log(("SUP_IOCTL_CALL_VMMR0_BIG: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); else Log4(("SUP_IOCTL_CALL_VMMR0_BIG: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", pReq->Hdr.rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GET_PAGING_MODE): { /* validate */ PSUPGETPAGINGMODE pReq = (PSUPGETPAGINGMODE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_GET_PAGING_MODE); /* execute */ pReq->Hdr.rc = VINF_SUCCESS; pReq->u.Out.enmMode = SUPR0GetPagingMode(); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOW_ALLOC): { /* validate */ PSUPLOWALLOC pReq = (PSUPLOWALLOC)pReqHdr; REQ_CHECK_EXPR(SUP_IOCTL_LOW_ALLOC, pReq->Hdr.cbIn <= SUP_IOCTL_LOW_ALLOC_SIZE_IN); REQ_CHECK_SIZES_EX(SUP_IOCTL_LOW_ALLOC, SUP_IOCTL_LOW_ALLOC_SIZE_IN, SUP_IOCTL_LOW_ALLOC_SIZE_OUT(pReq->u.In.cPages)); /* execute */ pReq->Hdr.rc = SUPR0LowAlloc(pSession, pReq->u.In.cPages, &pReq->u.Out.pvR0, &pReq->u.Out.pvR3, &pReq->u.Out.aPages[0]); if (RT_FAILURE(pReq->Hdr.rc)) pReq->Hdr.cbOut = sizeof(pReq->Hdr); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOW_FREE): { /* validate */ PSUPLOWFREE pReq = (PSUPLOWFREE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_LOW_FREE); /* execute */ pReq->Hdr.rc = SUPR0LowFree(pSession, (RTHCUINTPTR)pReq->u.In.pvR3); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GIP_MAP): { /* validate */ PSUPGIPMAP pReq = (PSUPGIPMAP)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_GIP_MAP); /* execute */ pReq->Hdr.rc = SUPR0GipMap(pSession, &pReq->u.Out.pGipR3, &pReq->u.Out.HCPhysGip); if (RT_SUCCESS(pReq->Hdr.rc)) pReq->u.Out.pGipR0 = pDevExt->pGip; return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GIP_UNMAP): { /* validate */ PSUPGIPUNMAP pReq = (PSUPGIPUNMAP)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_GIP_UNMAP); /* execute */ pReq->Hdr.rc = SUPR0GipUnmap(pSession); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SET_VM_FOR_FAST): { /* validate */ PSUPSETVMFORFAST pReq = (PSUPSETVMFORFAST)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_SET_VM_FOR_FAST); REQ_CHECK_EXPR_FMT( !pReq->u.In.pVMR0 || ( VALID_PTR(pReq->u.In.pVMR0) && !((uintptr_t)pReq->u.In.pVMR0 & (PAGE_SIZE - 1))), ("SUP_IOCTL_SET_VM_FOR_FAST: pVMR0=%p!\n", pReq->u.In.pVMR0)); /* execute */ RTSpinlockAcquire(pDevExt->Spinlock); if (pSession->pSessionVM == pReq->u.In.pVMR0) { if (pSession->pFastIoCtrlVM == NULL) { pSession->pFastIoCtrlVM = pSession->pSessionVM; RTSpinlockRelease(pDevExt->Spinlock); pReq->Hdr.rc = VINF_SUCCESS; } else { RTSpinlockRelease(pDevExt->Spinlock); OSDBGPRINT(("SUP_IOCTL_SET_VM_FOR_FAST: pSession->pFastIoCtrlVM=%p! (pVMR0=%p)\n", pSession->pFastIoCtrlVM, pReq->u.In.pVMR0)); pReq->Hdr.rc = VERR_ALREADY_EXISTS; } } else { RTSpinlockRelease(pDevExt->Spinlock); OSDBGPRINT(("SUP_IOCTL_SET_VM_FOR_FAST: pSession->pSessionVM=%p vs pVMR0=%p)\n", pSession->pSessionVM, pReq->u.In.pVMR0)); pReq->Hdr.rc = pSession->pSessionVM ? VERR_ACCESS_DENIED : VERR_WRONG_ORDER; } return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_ALLOC_EX): { /* validate */ PSUPPAGEALLOCEX pReq = (PSUPPAGEALLOCEX)pReqHdr; REQ_CHECK_EXPR(SUP_IOCTL_PAGE_ALLOC_EX, pReq->Hdr.cbIn <= SUP_IOCTL_PAGE_ALLOC_EX_SIZE_IN); REQ_CHECK_SIZES_EX(SUP_IOCTL_PAGE_ALLOC_EX, SUP_IOCTL_PAGE_ALLOC_EX_SIZE_IN, SUP_IOCTL_PAGE_ALLOC_EX_SIZE_OUT(pReq->u.In.cPages)); REQ_CHECK_EXPR_FMT(pReq->u.In.fKernelMapping || pReq->u.In.fUserMapping, ("SUP_IOCTL_PAGE_ALLOC_EX: No mapping requested!\n")); REQ_CHECK_EXPR_FMT(pReq->u.In.fUserMapping, ("SUP_IOCTL_PAGE_ALLOC_EX: Must have user mapping!\n")); REQ_CHECK_EXPR_FMT(!pReq->u.In.fReserved0 && !pReq->u.In.fReserved1, ("SUP_IOCTL_PAGE_ALLOC_EX: fReserved0=%d fReserved1=%d\n", pReq->u.In.fReserved0, pReq->u.In.fReserved1)); /* execute */ pReq->Hdr.rc = SUPR0PageAllocEx(pSession, pReq->u.In.cPages, 0 /* fFlags */, pReq->u.In.fUserMapping ? &pReq->u.Out.pvR3 : NULL, pReq->u.In.fKernelMapping ? &pReq->u.Out.pvR0 : NULL, &pReq->u.Out.aPages[0]); if (RT_FAILURE(pReq->Hdr.rc)) pReq->Hdr.cbOut = sizeof(pReq->Hdr); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_MAP_KERNEL): { /* validate */ PSUPPAGEMAPKERNEL pReq = (PSUPPAGEMAPKERNEL)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_PAGE_MAP_KERNEL); REQ_CHECK_EXPR_FMT(!pReq->u.In.fFlags, ("SUP_IOCTL_PAGE_MAP_KERNEL: fFlags=%#x! MBZ\n", pReq->u.In.fFlags)); REQ_CHECK_EXPR_FMT(!(pReq->u.In.offSub & PAGE_OFFSET_MASK), ("SUP_IOCTL_PAGE_MAP_KERNEL: offSub=%#x\n", pReq->u.In.offSub)); REQ_CHECK_EXPR_FMT(pReq->u.In.cbSub && !(pReq->u.In.cbSub & PAGE_OFFSET_MASK), ("SUP_IOCTL_PAGE_MAP_KERNEL: cbSub=%#x\n", pReq->u.In.cbSub)); /* execute */ pReq->Hdr.rc = SUPR0PageMapKernel(pSession, pReq->u.In.pvR3, pReq->u.In.offSub, pReq->u.In.cbSub, pReq->u.In.fFlags, &pReq->u.Out.pvR0); if (RT_FAILURE(pReq->Hdr.rc)) pReq->Hdr.cbOut = sizeof(pReq->Hdr); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_PROTECT): { /* validate */ PSUPPAGEPROTECT pReq = (PSUPPAGEPROTECT)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_PAGE_PROTECT); REQ_CHECK_EXPR_FMT(!(pReq->u.In.fProt & ~(RTMEM_PROT_READ | RTMEM_PROT_WRITE | RTMEM_PROT_EXEC | RTMEM_PROT_NONE)), ("SUP_IOCTL_PAGE_PROTECT: fProt=%#x!\n", pReq->u.In.fProt)); REQ_CHECK_EXPR_FMT(!(pReq->u.In.offSub & PAGE_OFFSET_MASK), ("SUP_IOCTL_PAGE_PROTECT: offSub=%#x\n", pReq->u.In.offSub)); REQ_CHECK_EXPR_FMT(pReq->u.In.cbSub && !(pReq->u.In.cbSub & PAGE_OFFSET_MASK), ("SUP_IOCTL_PAGE_PROTECT: cbSub=%#x\n", pReq->u.In.cbSub)); /* execute */ pReq->Hdr.rc = SUPR0PageProtect(pSession, pReq->u.In.pvR3, pReq->u.In.pvR0, pReq->u.In.offSub, pReq->u.In.cbSub, pReq->u.In.fProt); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_PAGE_FREE): { /* validate */ PSUPPAGEFREE pReq = (PSUPPAGEFREE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_PAGE_FREE); /* execute */ pReq->Hdr.rc = SUPR0PageFree(pSession, pReq->u.In.pvR3); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_CALL_SERVICE_NO_SIZE()): { /* validate */ PSUPCALLSERVICE pReq = (PSUPCALLSERVICE)pReqHdr; Log4(("SUP_IOCTL_CALL_SERVICE: op=%u in=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", pReq->u.In.uOperation, pReq->Hdr.cbIn, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_SERVICE_SIZE(0)) REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_SERVICE, SUP_IOCTL_CALL_SERVICE_SIZE_IN(0), SUP_IOCTL_CALL_SERVICE_SIZE_OUT(0)); else { PSUPR0SERVICEREQHDR pSrvReq = (PSUPR0SERVICEREQHDR)&pReq->abReqPkt[0]; REQ_CHECK_EXPR_FMT(pReq->Hdr.cbIn >= SUP_IOCTL_CALL_SERVICE_SIZE(sizeof(SUPR0SERVICEREQHDR)), ("SUP_IOCTL_CALL_SERVICE: cbIn=%#x < %#lx\n", pReq->Hdr.cbIn, SUP_IOCTL_CALL_SERVICE_SIZE(sizeof(SUPR0SERVICEREQHDR)))); REQ_CHECK_EXPR(SUP_IOCTL_CALL_SERVICE, pSrvReq->u32Magic == SUPR0SERVICEREQHDR_MAGIC); REQ_CHECK_SIZES_EX(SUP_IOCTL_CALL_SERVICE, SUP_IOCTL_CALL_SERVICE_SIZE_IN(pSrvReq->cbReq), SUP_IOCTL_CALL_SERVICE_SIZE_OUT(pSrvReq->cbReq)); } REQ_CHECK_EXPR(SUP_IOCTL_CALL_SERVICE, RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName))); /* execute */ pReq->Hdr.rc = supdrvIOCtl_CallServiceModule(pDevExt, pSession, pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_LOGGER_SETTINGS_NO_SIZE()): { /* validate */ PSUPLOGGERSETTINGS pReq = (PSUPLOGGERSETTINGS)pReqHdr; size_t cbStrTab; REQ_CHECK_SIZE_OUT(SUP_IOCTL_LOGGER_SETTINGS, SUP_IOCTL_LOGGER_SETTINGS_SIZE_OUT); REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->Hdr.cbIn >= SUP_IOCTL_LOGGER_SETTINGS_SIZE_IN(1)); cbStrTab = pReq->Hdr.cbIn - SUP_IOCTL_LOGGER_SETTINGS_SIZE_IN(0); REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offGroups < cbStrTab); REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offFlags < cbStrTab); REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.offDestination < cbStrTab); REQ_CHECK_EXPR_FMT(pReq->u.In.szStrings[cbStrTab - 1] == '\0', ("SUP_IOCTL_LOGGER_SETTINGS: cbIn=%#x cbStrTab=%#zx LastChar=%d\n", pReq->Hdr.cbIn, cbStrTab, pReq->u.In.szStrings[cbStrTab - 1])); REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.fWhich <= SUPLOGGERSETTINGS_WHICH_RELEASE); REQ_CHECK_EXPR(SUP_IOCTL_LOGGER_SETTINGS, pReq->u.In.fWhat <= SUPLOGGERSETTINGS_WHAT_DESTROY); /* execute */ pReq->Hdr.rc = supdrvIOCtl_LoggerSettings(pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SEM_OP2): { /* validate */ PSUPSEMOP2 pReq = (PSUPSEMOP2)pReqHdr; REQ_CHECK_SIZES_EX(SUP_IOCTL_SEM_OP2, SUP_IOCTL_SEM_OP2_SIZE_IN, SUP_IOCTL_SEM_OP2_SIZE_OUT); REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP2, pReq->u.In.uReserved == 0); /* execute */ switch (pReq->u.In.uType) { case SUP_SEM_TYPE_EVENT: { SUPSEMEVENT hEvent = (SUPSEMEVENT)(uintptr_t)pReq->u.In.hSem; switch (pReq->u.In.uOp) { case SUPSEMOP2_WAIT_MS_REL: pReq->Hdr.rc = SUPSemEventWaitNoResume(pSession, hEvent, pReq->u.In.uArg.cRelMsTimeout); break; case SUPSEMOP2_WAIT_NS_ABS: pReq->Hdr.rc = SUPSemEventWaitNsAbsIntr(pSession, hEvent, pReq->u.In.uArg.uAbsNsTimeout); break; case SUPSEMOP2_WAIT_NS_REL: pReq->Hdr.rc = SUPSemEventWaitNsRelIntr(pSession, hEvent, pReq->u.In.uArg.cRelNsTimeout); break; case SUPSEMOP2_SIGNAL: pReq->Hdr.rc = SUPSemEventSignal(pSession, hEvent); break; case SUPSEMOP2_CLOSE: pReq->Hdr.rc = SUPSemEventClose(pSession, hEvent); break; case SUPSEMOP2_RESET: default: pReq->Hdr.rc = VERR_INVALID_FUNCTION; break; } break; } case SUP_SEM_TYPE_EVENT_MULTI: { SUPSEMEVENTMULTI hEventMulti = (SUPSEMEVENTMULTI)(uintptr_t)pReq->u.In.hSem; switch (pReq->u.In.uOp) { case SUPSEMOP2_WAIT_MS_REL: pReq->Hdr.rc = SUPSemEventMultiWaitNoResume(pSession, hEventMulti, pReq->u.In.uArg.cRelMsTimeout); break; case SUPSEMOP2_WAIT_NS_ABS: pReq->Hdr.rc = SUPSemEventMultiWaitNsAbsIntr(pSession, hEventMulti, pReq->u.In.uArg.uAbsNsTimeout); break; case SUPSEMOP2_WAIT_NS_REL: pReq->Hdr.rc = SUPSemEventMultiWaitNsRelIntr(pSession, hEventMulti, pReq->u.In.uArg.cRelNsTimeout); break; case SUPSEMOP2_SIGNAL: pReq->Hdr.rc = SUPSemEventMultiSignal(pSession, hEventMulti); break; case SUPSEMOP2_CLOSE: pReq->Hdr.rc = SUPSemEventMultiClose(pSession, hEventMulti); break; case SUPSEMOP2_RESET: pReq->Hdr.rc = SUPSemEventMultiReset(pSession, hEventMulti); break; default: pReq->Hdr.rc = VERR_INVALID_FUNCTION; break; } break; } default: pReq->Hdr.rc = VERR_INVALID_PARAMETER; break; } return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_SEM_OP3): { /* validate */ PSUPSEMOP3 pReq = (PSUPSEMOP3)pReqHdr; REQ_CHECK_SIZES_EX(SUP_IOCTL_SEM_OP3, SUP_IOCTL_SEM_OP3_SIZE_IN, SUP_IOCTL_SEM_OP3_SIZE_OUT); REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, pReq->u.In.u32Reserved == 0 && pReq->u.In.u64Reserved == 0); /* execute */ switch (pReq->u.In.uType) { case SUP_SEM_TYPE_EVENT: { SUPSEMEVENT hEvent = (SUPSEMEVENT)(uintptr_t)pReq->u.In.hSem; switch (pReq->u.In.uOp) { case SUPSEMOP3_CREATE: REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEvent == NIL_SUPSEMEVENT); pReq->Hdr.rc = SUPSemEventCreate(pSession, &hEvent); pReq->u.Out.hSem = (uint32_t)(uintptr_t)hEvent; break; case SUPSEMOP3_GET_RESOLUTION: REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEvent == NIL_SUPSEMEVENT); pReq->Hdr.rc = VINF_SUCCESS; pReq->Hdr.cbOut = sizeof(*pReq); pReq->u.Out.cNsResolution = SUPSemEventGetResolution(pSession); break; default: pReq->Hdr.rc = VERR_INVALID_FUNCTION; break; } break; } case SUP_SEM_TYPE_EVENT_MULTI: { SUPSEMEVENTMULTI hEventMulti = (SUPSEMEVENTMULTI)(uintptr_t)pReq->u.In.hSem; switch (pReq->u.In.uOp) { case SUPSEMOP3_CREATE: REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEventMulti == NIL_SUPSEMEVENTMULTI); pReq->Hdr.rc = SUPSemEventMultiCreate(pSession, &hEventMulti); pReq->u.Out.hSem = (uint32_t)(uintptr_t)hEventMulti; break; case SUPSEMOP3_GET_RESOLUTION: REQ_CHECK_EXPR(SUP_IOCTL_SEM_OP3, hEventMulti == NIL_SUPSEMEVENTMULTI); pReq->Hdr.rc = VINF_SUCCESS; pReq->u.Out.cNsResolution = SUPSemEventMultiGetResolution(pSession); break; default: pReq->Hdr.rc = VERR_INVALID_FUNCTION; break; } break; } default: pReq->Hdr.rc = VERR_INVALID_PARAMETER; break; } return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_VT_CAPS): { /* validate */ PSUPVTCAPS pReq = (PSUPVTCAPS)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_VT_CAPS); /* execute */ pReq->Hdr.rc = SUPR0QueryVTCaps(pSession, &pReq->u.Out.fCaps); if (RT_FAILURE(pReq->Hdr.rc)) pReq->Hdr.cbOut = sizeof(pReq->Hdr); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_OPEN): { /* validate */ PSUPTRACEROPEN pReq = (PSUPTRACEROPEN)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_TRACER_OPEN); /* execute */ pReq->Hdr.rc = supdrvIOCtl_TracerOpen(pDevExt, pSession, pReq->u.In.uCookie, pReq->u.In.uArg); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_CLOSE): { /* validate */ REQ_CHECK_SIZES(SUP_IOCTL_TRACER_CLOSE); /* execute */ pReqHdr->rc = supdrvIOCtl_TracerClose(pDevExt, pSession); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_IOCTL): { /* validate */ PSUPTRACERIOCTL pReq = (PSUPTRACERIOCTL)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_TRACER_IOCTL); /* execute */ pReqHdr->rc = supdrvIOCtl_TracerIOCtl(pDevExt, pSession, pReq->u.In.uCmd, pReq->u.In.uArg, &pReq->u.Out.iRetVal); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_REG): { /* validate */ PSUPTRACERUMODREG pReq = (PSUPTRACERUMODREG)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_REG); if (!RTStrEnd(pReq->u.In.szName, sizeof(pReq->u.In.szName))) return VERR_INVALID_PARAMETER; /* execute */ pReqHdr->rc = supdrvIOCtl_TracerUmodRegister(pDevExt, pSession, pReq->u.In.R3PtrVtgHdr, pReq->u.In.uVtgHdrAddr, pReq->u.In.R3PtrStrTab, pReq->u.In.cbStrTab, pReq->u.In.szName, pReq->u.In.fFlags); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_DEREG): { /* validate */ PSUPTRACERUMODDEREG pReq = (PSUPTRACERUMODDEREG)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_DEREG); /* execute */ pReqHdr->rc = supdrvIOCtl_TracerUmodDeregister(pDevExt, pSession, pReq->u.In.pVtgHdr); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TRACER_UMOD_FIRE_PROBE): { /* validate */ PSUPTRACERUMODFIREPROBE pReq = (PSUPTRACERUMODFIREPROBE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_TRACER_UMOD_FIRE_PROBE); supdrvIOCtl_TracerUmodProbeFire(pDevExt, pSession, &pReq->u.In); pReqHdr->rc = VINF_SUCCESS; return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_MSR_PROBER): { /* validate */ PSUPMSRPROBER pReq = (PSUPMSRPROBER)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_MSR_PROBER); REQ_CHECK_EXPR(SUP_IOCTL_MSR_PROBER, pReq->u.In.enmOp > SUPMSRPROBEROP_INVALID && pReq->u.In.enmOp < SUPMSRPROBEROP_END); pReqHdr->rc = supdrvIOCtl_MsrProber(pDevExt, pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_RESUME_SUSPENDED_KBDS): { /* validate */ REQ_CHECK_SIZES(SUP_IOCTL_RESUME_SUSPENDED_KBDS); pReqHdr->rc = supdrvIOCtl_ResumeSuspendedKbds(); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TSC_DELTA_MEASURE): { /* validate */ PSUPTSCDELTAMEASURE pReq = (PSUPTSCDELTAMEASURE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_TSC_DELTA_MEASURE); pReqHdr->rc = supdrvIOCtl_TscDeltaMeasure(pDevExt, pSession, pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_TSC_READ): { /* validate */ PSUPTSCREAD pReq = (PSUPTSCREAD)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_TSC_READ); pReqHdr->rc = supdrvIOCtl_TscRead(pDevExt, pSession, pReq); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_GIP_SET_FLAGS): { /* validate */ PSUPGIPSETFLAGS pReq = (PSUPGIPSETFLAGS)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_GIP_SET_FLAGS); pReqHdr->rc = supdrvIOCtl_GipSetFlags(pDevExt, pSession, pReq->u.In.fOrMask, pReq->u.In.fAndMask); return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_UCODE_REV): { /* validate */ PSUPUCODEREV pReq = (PSUPUCODEREV)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_UCODE_REV); /* execute */ pReq->Hdr.rc = SUPR0QueryUcodeRev(pSession, &pReq->u.Out.MicrocodeRev); if (RT_FAILURE(pReq->Hdr.rc)) pReq->Hdr.cbOut = sizeof(pReq->Hdr); return 0; } default: Log(("Unknown IOCTL %#lx\n", (long)uIOCtl)); break; } return VERR_GENERAL_FAILURE; } /** * I/O Control inner worker for the restricted operations. * * @returns IPRT status code. * @retval VERR_INVALID_PARAMETER if the request is invalid. * * @param uIOCtl Function number. * @param pDevExt Device extention. * @param pSession Session data. * @param pReqHdr The request header. */ static int supdrvIOCtlInnerRestricted(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr) { /* * The switch. */ switch (SUP_CTL_CODE_NO_SIZE(uIOCtl)) { case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_COOKIE): { PSUPCOOKIE pReq = (PSUPCOOKIE)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_COOKIE); if (strncmp(pReq->u.In.szMagic, SUPCOOKIE_MAGIC, sizeof(pReq->u.In.szMagic))) { OSDBGPRINT(("SUP_IOCTL_COOKIE: invalid magic %.16s\n", pReq->u.In.szMagic)); pReq->Hdr.rc = VERR_INVALID_MAGIC; return 0; } /* * Match the version. * The current logic is very simple, match the major interface version. */ if ( pReq->u.In.u32MinVersion > SUPDRV_IOC_VERSION || (pReq->u.In.u32MinVersion & 0xffff0000) != (SUPDRV_IOC_VERSION & 0xffff0000)) { OSDBGPRINT(("SUP_IOCTL_COOKIE: Version mismatch. Requested: %#x Min: %#x Current: %#x\n", pReq->u.In.u32ReqVersion, pReq->u.In.u32MinVersion, SUPDRV_IOC_VERSION)); pReq->u.Out.u32Cookie = 0xffffffff; pReq->u.Out.u32SessionCookie = 0xffffffff; pReq->u.Out.u32SessionVersion = 0xffffffff; pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION; pReq->u.Out.pSession = NULL; pReq->u.Out.cFunctions = 0; pReq->Hdr.rc = VERR_VERSION_MISMATCH; return 0; } /* * Fill in return data and be gone. * N.B. The first one to change SUPDRV_IOC_VERSION shall makes sure that * u32SessionVersion <= u32ReqVersion! */ /** @todo Somehow validate the client and negotiate a secure cookie... */ pReq->u.Out.u32Cookie = pDevExt->u32Cookie; pReq->u.Out.u32SessionCookie = pSession->u32Cookie; pReq->u.Out.u32SessionVersion = SUPDRV_IOC_VERSION; pReq->u.Out.u32DriverVersion = SUPDRV_IOC_VERSION; pReq->u.Out.pSession = pSession; pReq->u.Out.cFunctions = 0; pReq->Hdr.rc = VINF_SUCCESS; return 0; } case SUP_CTL_CODE_NO_SIZE(SUP_IOCTL_VT_CAPS): { /* validate */ PSUPVTCAPS pReq = (PSUPVTCAPS)pReqHdr; REQ_CHECK_SIZES(SUP_IOCTL_VT_CAPS); /* execute */ pReq->Hdr.rc = SUPR0QueryVTCaps(pSession, &pReq->u.Out.fCaps); if (RT_FAILURE(pReq->Hdr.rc)) pReq->Hdr.cbOut = sizeof(pReq->Hdr); return 0; } default: Log(("Unknown IOCTL %#lx\n", (long)uIOCtl)); break; } return VERR_GENERAL_FAILURE; } /** * I/O Control worker. * * @returns IPRT status code. * @retval VERR_INVALID_PARAMETER if the request is invalid. * * @param uIOCtl Function number. * @param pDevExt Device extention. * @param pSession Session data. * @param pReqHdr The request header. * @param cbReq The size of the request buffer. */ int VBOXCALL supdrvIOCtl(uintptr_t uIOCtl, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPREQHDR pReqHdr, size_t cbReq) { int rc; VBOXDRV_IOCTL_ENTRY(pSession, uIOCtl, pReqHdr); /* * Validate the request. */ if (RT_UNLIKELY(cbReq < sizeof(*pReqHdr))) { OSDBGPRINT(("vboxdrv: Bad ioctl request size; cbReq=%#lx\n", (long)cbReq)); VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS); return VERR_INVALID_PARAMETER; } if (RT_UNLIKELY( (pReqHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC || pReqHdr->cbIn < sizeof(*pReqHdr) || pReqHdr->cbIn > cbReq || pReqHdr->cbOut < sizeof(*pReqHdr) || pReqHdr->cbOut > cbReq)) { OSDBGPRINT(("vboxdrv: Bad ioctl request header; cbIn=%#lx cbOut=%#lx fFlags=%#lx\n", (long)pReqHdr->cbIn, (long)pReqHdr->cbOut, (long)pReqHdr->fFlags)); VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS); return VERR_INVALID_PARAMETER; } if (RT_UNLIKELY(!RT_VALID_PTR(pSession))) { OSDBGPRINT(("vboxdrv: Invalid pSession value %p (ioctl=%p)\n", pSession, (void *)uIOCtl)); VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS); return VERR_INVALID_PARAMETER; } if (RT_UNLIKELY(uIOCtl == SUP_IOCTL_COOKIE)) { if (pReqHdr->u32Cookie != SUPCOOKIE_INITIAL_COOKIE) { OSDBGPRINT(("SUP_IOCTL_COOKIE: bad cookie %#lx\n", (long)pReqHdr->u32Cookie)); VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS); return VERR_INVALID_PARAMETER; } } else if (RT_UNLIKELY( pReqHdr->u32Cookie != pDevExt->u32Cookie || pReqHdr->u32SessionCookie != pSession->u32Cookie)) { OSDBGPRINT(("vboxdrv: bad cookie %#lx / %#lx.\n", (long)pReqHdr->u32Cookie, (long)pReqHdr->u32SessionCookie)); VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, VERR_INVALID_PARAMETER, VINF_SUCCESS); return VERR_INVALID_PARAMETER; } /* * Hand it to an inner function to avoid lots of unnecessary return tracepoints. */ if (pSession->fUnrestricted) rc = supdrvIOCtlInnerUnrestricted(uIOCtl, pDevExt, pSession, pReqHdr); else rc = supdrvIOCtlInnerRestricted(uIOCtl, pDevExt, pSession, pReqHdr); VBOXDRV_IOCTL_RETURN(pSession, uIOCtl, pReqHdr, pReqHdr->rc, rc); return rc; } /** * Inter-Driver Communication (IDC) worker. * * @returns VBox status code. * @retval VINF_SUCCESS on success. * @retval VERR_INVALID_PARAMETER if the request is invalid. * @retval VERR_NOT_SUPPORTED if the request isn't supported. * * @param uReq The request (function) code. * @param pDevExt Device extention. * @param pSession Session data. * @param pReqHdr The request header. */ int VBOXCALL supdrvIDC(uintptr_t uReq, PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQHDR pReqHdr) { /* * The OS specific code has already validated the pSession * pointer, and the request size being greater or equal to * size of the header. * * So, just check that pSession is a kernel context session. */ if (RT_UNLIKELY( pSession && pSession->R0Process != NIL_RTR0PROCESS)) return VERR_INVALID_PARAMETER; /* * Validation macro. */ #define REQ_CHECK_IDC_SIZE(Name, cbExpect) \ do { \ if (RT_UNLIKELY(pReqHdr->cb != (cbExpect))) \ { \ OSDBGPRINT(( #Name ": Invalid input/output sizes. cb=%ld expected %ld.\n", \ (long)pReqHdr->cb, (long)(cbExpect))); \ return pReqHdr->rc = VERR_INVALID_PARAMETER; \ } \ } while (0) switch (uReq) { case SUPDRV_IDC_REQ_CONNECT: { PSUPDRVIDCREQCONNECT pReq = (PSUPDRVIDCREQCONNECT)pReqHdr; REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_CONNECT, sizeof(*pReq)); /* * Validate the cookie and other input. */ if (pReq->Hdr.pSession != NULL) { OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: Hdr.pSession=%p expected NULL!\n", pReq->Hdr.pSession)); return pReqHdr->rc = VERR_INVALID_PARAMETER; } if (pReq->u.In.u32MagicCookie != SUPDRVIDCREQ_CONNECT_MAGIC_COOKIE) { OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: u32MagicCookie=%#x expected %#x!\n", (unsigned)pReq->u.In.u32MagicCookie, (unsigned)SUPDRVIDCREQ_CONNECT_MAGIC_COOKIE)); return pReqHdr->rc = VERR_INVALID_PARAMETER; } if ( pReq->u.In.uMinVersion > pReq->u.In.uReqVersion || (pReq->u.In.uMinVersion & UINT32_C(0xffff0000)) != (pReq->u.In.uReqVersion & UINT32_C(0xffff0000))) { OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: uMinVersion=%#x uMaxVersion=%#x doesn't match!\n", pReq->u.In.uMinVersion, pReq->u.In.uReqVersion)); return pReqHdr->rc = VERR_INVALID_PARAMETER; } if (pSession != NULL) { OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: pSession=%p expected NULL!\n", pSession)); return pReqHdr->rc = VERR_INVALID_PARAMETER; } /* * Match the version. * The current logic is very simple, match the major interface version. */ if ( pReq->u.In.uMinVersion > SUPDRV_IDC_VERSION || (pReq->u.In.uMinVersion & 0xffff0000) != (SUPDRV_IDC_VERSION & 0xffff0000)) { OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: Version mismatch. Requested: %#x Min: %#x Current: %#x\n", pReq->u.In.uReqVersion, pReq->u.In.uMinVersion, (unsigned)SUPDRV_IDC_VERSION)); pReq->u.Out.pSession = NULL; pReq->u.Out.uSessionVersion = 0xffffffff; pReq->u.Out.uDriverVersion = SUPDRV_IDC_VERSION; pReq->u.Out.uDriverRevision = VBOX_SVN_REV; pReq->Hdr.rc = VERR_VERSION_MISMATCH; return VINF_SUCCESS; } pReq->u.Out.pSession = NULL; pReq->u.Out.uSessionVersion = SUPDRV_IDC_VERSION; pReq->u.Out.uDriverVersion = SUPDRV_IDC_VERSION; pReq->u.Out.uDriverRevision = VBOX_SVN_REV; pReq->Hdr.rc = supdrvCreateSession(pDevExt, false /* fUser */, true /*fUnrestricted*/, &pSession); if (RT_FAILURE(pReq->Hdr.rc)) { OSDBGPRINT(("SUPDRV_IDC_REQ_CONNECT: failed to create session, rc=%d\n", pReq->Hdr.rc)); return VINF_SUCCESS; } pReq->u.Out.pSession = pSession; pReq->Hdr.pSession = pSession; return VINF_SUCCESS; } case SUPDRV_IDC_REQ_DISCONNECT: { REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_DISCONNECT, sizeof(*pReqHdr)); supdrvSessionRelease(pSession); return pReqHdr->rc = VINF_SUCCESS; } case SUPDRV_IDC_REQ_GET_SYMBOL: { PSUPDRVIDCREQGETSYM pReq = (PSUPDRVIDCREQGETSYM)pReqHdr; REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_GET_SYMBOL, sizeof(*pReq)); pReq->Hdr.rc = supdrvIDC_LdrGetSymbol(pDevExt, pSession, pReq); return VINF_SUCCESS; } case SUPDRV_IDC_REQ_COMPONENT_REGISTER_FACTORY: { PSUPDRVIDCREQCOMPREGFACTORY pReq = (PSUPDRVIDCREQCOMPREGFACTORY)pReqHdr; REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_COMPONENT_REGISTER_FACTORY, sizeof(*pReq)); pReq->Hdr.rc = SUPR0ComponentRegisterFactory(pSession, pReq->u.In.pFactory); return VINF_SUCCESS; } case SUPDRV_IDC_REQ_COMPONENT_DEREGISTER_FACTORY: { PSUPDRVIDCREQCOMPDEREGFACTORY pReq = (PSUPDRVIDCREQCOMPDEREGFACTORY)pReqHdr; REQ_CHECK_IDC_SIZE(SUPDRV_IDC_REQ_COMPONENT_DEREGISTER_FACTORY, sizeof(*pReq)); pReq->Hdr.rc = SUPR0ComponentDeregisterFactory(pSession, pReq->u.In.pFactory); return VINF_SUCCESS; } default: Log(("Unknown IDC %#lx\n", (long)uReq)); break; } #undef REQ_CHECK_IDC_SIZE return VERR_NOT_SUPPORTED; } /** * Register a object for reference counting. * The object is registered with one reference in the specified session. * * @returns Unique identifier on success (pointer). * All future reference must use this identifier. * @returns NULL on failure. * @param pSession The caller's session. * @param enmType The object type. * @param pfnDestructor The destructore function which will be called when the reference count reaches 0. * @param pvUser1 The first user argument. * @param pvUser2 The second user argument. */ SUPR0DECL(void *) SUPR0ObjRegister(PSUPDRVSESSION pSession, SUPDRVOBJTYPE enmType, PFNSUPDRVDESTRUCTOR pfnDestructor, void *pvUser1, void *pvUser2) { PSUPDRVDEVEXT pDevExt = pSession->pDevExt; PSUPDRVOBJ pObj; PSUPDRVUSAGE pUsage; /* * Validate the input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), NULL); AssertReturn(enmType > SUPDRVOBJTYPE_INVALID && enmType < SUPDRVOBJTYPE_END, NULL); AssertPtrReturn(pfnDestructor, NULL); /* * Allocate and initialize the object. */ pObj = (PSUPDRVOBJ)RTMemAlloc(sizeof(*pObj)); if (!pObj) return NULL; pObj->u32Magic = SUPDRVOBJ_MAGIC; pObj->enmType = enmType; pObj->pNext = NULL; pObj->cUsage = 1; pObj->pfnDestructor = pfnDestructor; pObj->pvUser1 = pvUser1; pObj->pvUser2 = pvUser2; pObj->CreatorUid = pSession->Uid; pObj->CreatorGid = pSession->Gid; pObj->CreatorProcess= pSession->Process; supdrvOSObjInitCreator(pObj, pSession); /* * Allocate the usage record. * (We keep freed usage records around to simplify SUPR0ObjAddRefEx().) */ RTSpinlockAcquire(pDevExt->Spinlock); pUsage = pDevExt->pUsageFree; if (pUsage) pDevExt->pUsageFree = pUsage->pNext; else { RTSpinlockRelease(pDevExt->Spinlock); pUsage = (PSUPDRVUSAGE)RTMemAlloc(sizeof(*pUsage)); if (!pUsage) { RTMemFree(pObj); return NULL; } RTSpinlockAcquire(pDevExt->Spinlock); } /* * Insert the object and create the session usage record. */ /* The object. */ pObj->pNext = pDevExt->pObjs; pDevExt->pObjs = pObj; /* The session record. */ pUsage->cUsage = 1; pUsage->pObj = pObj; pUsage->pNext = pSession->pUsage; /* Log2(("SUPR0ObjRegister: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext)); */ pSession->pUsage = pUsage; RTSpinlockRelease(pDevExt->Spinlock); Log(("SUPR0ObjRegister: returns %p (pvUser1=%p, pvUser=%p)\n", pObj, pvUser1, pvUser2)); return pObj; } /** * Increment the reference counter for the object associating the reference * with the specified session. * * @returns IPRT status code. * @param pvObj The identifier returned by SUPR0ObjRegister(). * @param pSession The session which is referencing the object. * * @remarks The caller should not own any spinlocks and must carefully protect * itself against potential race with the destructor so freed memory * isn't accessed here. */ SUPR0DECL(int) SUPR0ObjAddRef(void *pvObj, PSUPDRVSESSION pSession) { return SUPR0ObjAddRefEx(pvObj, pSession, false /* fNoBlocking */); } /** * Increment the reference counter for the object associating the reference * with the specified session. * * @returns IPRT status code. * @retval VERR_TRY_AGAIN if fNoBlocking was set and a new usage record * couldn't be allocated. (If you see this you're not doing the right * thing and it won't ever work reliably.) * * @param pvObj The identifier returned by SUPR0ObjRegister(). * @param pSession The session which is referencing the object. * @param fNoBlocking Set if it's not OK to block. Never try to make the * first reference to an object in a session with this * argument set. * * @remarks The caller should not own any spinlocks and must carefully protect * itself against potential race with the destructor so freed memory * isn't accessed here. */ SUPR0DECL(int) SUPR0ObjAddRefEx(void *pvObj, PSUPDRVSESSION pSession, bool fNoBlocking) { PSUPDRVDEVEXT pDevExt = pSession->pDevExt; PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj; int rc = VINF_SUCCESS; PSUPDRVUSAGE pUsagePre; PSUPDRVUSAGE pUsage; /* * Validate the input. * Be ready for the destruction race (someone might be stuck in the * destructor waiting a lock we own). */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrReturn(pObj, VERR_INVALID_POINTER); AssertMsgReturn(pObj->u32Magic == SUPDRVOBJ_MAGIC || pObj->u32Magic == SUPDRVOBJ_MAGIC_DEAD, ("Invalid pvObj=%p magic=%#x (expected %#x or %#x)\n", pvObj, pObj->u32Magic, SUPDRVOBJ_MAGIC, SUPDRVOBJ_MAGIC_DEAD), VERR_INVALID_PARAMETER); RTSpinlockAcquire(pDevExt->Spinlock); if (RT_UNLIKELY(pObj->u32Magic != SUPDRVOBJ_MAGIC)) { RTSpinlockRelease(pDevExt->Spinlock); AssertMsgFailed(("pvObj=%p magic=%#x\n", pvObj, pObj->u32Magic)); return VERR_WRONG_ORDER; } /* * Preallocate the usage record if we can. */ pUsagePre = pDevExt->pUsageFree; if (pUsagePre) pDevExt->pUsageFree = pUsagePre->pNext; else if (!fNoBlocking) { RTSpinlockRelease(pDevExt->Spinlock); pUsagePre = (PSUPDRVUSAGE)RTMemAlloc(sizeof(*pUsagePre)); if (!pUsagePre) return VERR_NO_MEMORY; RTSpinlockAcquire(pDevExt->Spinlock); if (RT_UNLIKELY(pObj->u32Magic != SUPDRVOBJ_MAGIC)) { RTSpinlockRelease(pDevExt->Spinlock); AssertMsgFailed(("pvObj=%p magic=%#x\n", pvObj, pObj->u32Magic)); return VERR_WRONG_ORDER; } } /* * Reference the object. */ pObj->cUsage++; /* * Look for the session record. */ for (pUsage = pSession->pUsage; pUsage; pUsage = pUsage->pNext) { /*Log(("SUPR0AddRef: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext));*/ if (pUsage->pObj == pObj) break; } if (pUsage) pUsage->cUsage++; else if (pUsagePre) { /* create a new session record. */ pUsagePre->cUsage = 1; pUsagePre->pObj = pObj; pUsagePre->pNext = pSession->pUsage; pSession->pUsage = pUsagePre; /*Log(("SUPR0AddRef: pUsagePre=%p:{.pObj=%p, .pNext=%p}\n", pUsagePre, pUsagePre->pObj, pUsagePre->pNext));*/ pUsagePre = NULL; } else { pObj->cUsage--; rc = VERR_TRY_AGAIN; } /* * Put any unused usage record into the free list.. */ if (pUsagePre) { pUsagePre->pNext = pDevExt->pUsageFree; pDevExt->pUsageFree = pUsagePre; } RTSpinlockRelease(pDevExt->Spinlock); return rc; } /** * Decrement / destroy a reference counter record for an object. * * The object is uniquely identified by pfnDestructor+pvUser1+pvUser2. * * @returns IPRT status code. * @retval VINF_SUCCESS if not destroyed. * @retval VINF_OBJECT_DESTROYED if it's destroyed by this release call. * @retval VERR_INVALID_PARAMETER if the object isn't valid. Will assert in * string builds. * * @param pvObj The identifier returned by SUPR0ObjRegister(). * @param pSession The session which is referencing the object. */ SUPR0DECL(int) SUPR0ObjRelease(void *pvObj, PSUPDRVSESSION pSession) { PSUPDRVDEVEXT pDevExt = pSession->pDevExt; PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj; int rc = VERR_INVALID_PARAMETER; PSUPDRVUSAGE pUsage; PSUPDRVUSAGE pUsagePrev; /* * Validate the input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertMsgReturn(VALID_PTR(pObj)&& pObj->u32Magic == SUPDRVOBJ_MAGIC, ("Invalid pvObj=%p magic=%#x (expected %#x)\n", pvObj, pObj ? pObj->u32Magic : 0, SUPDRVOBJ_MAGIC), VERR_INVALID_PARAMETER); /* * Acquire the spinlock and look for the usage record. */ RTSpinlockAcquire(pDevExt->Spinlock); for (pUsagePrev = NULL, pUsage = pSession->pUsage; pUsage; pUsagePrev = pUsage, pUsage = pUsage->pNext) { /*Log2(("SUPR0ObjRelease: pUsage=%p:{.pObj=%p, .pNext=%p}\n", pUsage, pUsage->pObj, pUsage->pNext));*/ if (pUsage->pObj == pObj) { rc = VINF_SUCCESS; AssertMsg(pUsage->cUsage >= 1 && pObj->cUsage >= pUsage->cUsage, ("glob %d; sess %d\n", pObj->cUsage, pUsage->cUsage)); if (pUsage->cUsage > 1) { pObj->cUsage--; pUsage->cUsage--; } else { /* * Free the session record. */ if (pUsagePrev) pUsagePrev->pNext = pUsage->pNext; else pSession->pUsage = pUsage->pNext; pUsage->pNext = pDevExt->pUsageFree; pDevExt->pUsageFree = pUsage; /* What about the object? */ if (pObj->cUsage > 1) pObj->cUsage--; else { /* * Object is to be destroyed, unlink it. */ pObj->u32Magic = SUPDRVOBJ_MAGIC_DEAD; rc = VINF_OBJECT_DESTROYED; if (pDevExt->pObjs == pObj) pDevExt->pObjs = pObj->pNext; else { PSUPDRVOBJ pObjPrev; for (pObjPrev = pDevExt->pObjs; pObjPrev; pObjPrev = pObjPrev->pNext) if (pObjPrev->pNext == pObj) { pObjPrev->pNext = pObj->pNext; break; } Assert(pObjPrev); } } } break; } } RTSpinlockRelease(pDevExt->Spinlock); /* * Call the destructor and free the object if required. */ if (rc == VINF_OBJECT_DESTROYED) { Log(("SUPR0ObjRelease: destroying %p/%d (%p/%p) cpid=%RTproc pid=%RTproc dtor=%p\n", pObj, pObj->enmType, pObj->pvUser1, pObj->pvUser2, pObj->CreatorProcess, RTProcSelf(), pObj->pfnDestructor)); if (pObj->pfnDestructor) pObj->pfnDestructor(pObj, pObj->pvUser1, pObj->pvUser2); RTMemFree(pObj); } AssertMsg(pUsage, ("pvObj=%p\n", pvObj)); return rc; } /** * Verifies that the current process can access the specified object. * * @returns The following IPRT status code: * @retval VINF_SUCCESS if access was granted. * @retval VERR_PERMISSION_DENIED if denied access. * @retval VERR_INVALID_PARAMETER if invalid parameter. * * @param pvObj The identifier returned by SUPR0ObjRegister(). * @param pSession The session which wishes to access the object. * @param pszObjName Object string name. This is optional and depends on the object type. * * @remark The caller is responsible for making sure the object isn't removed while * we're inside this function. If uncertain about this, just call AddRef before calling us. */ SUPR0DECL(int) SUPR0ObjVerifyAccess(void *pvObj, PSUPDRVSESSION pSession, const char *pszObjName) { PSUPDRVOBJ pObj = (PSUPDRVOBJ)pvObj; int rc; /* * Validate the input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertMsgReturn(VALID_PTR(pObj) && pObj->u32Magic == SUPDRVOBJ_MAGIC, ("Invalid pvObj=%p magic=%#x (exepcted %#x)\n", pvObj, pObj ? pObj->u32Magic : 0, SUPDRVOBJ_MAGIC), VERR_INVALID_PARAMETER); /* * Check access. (returns true if a decision has been made.) */ rc = VERR_INTERNAL_ERROR; if (supdrvOSObjCanAccess(pObj, pSession, pszObjName, &rc)) return rc; /* * Default policy is to allow the user to access his own * stuff but nothing else. */ if (pObj->CreatorUid == pSession->Uid) return VINF_SUCCESS; return VERR_PERMISSION_DENIED; } /** * API for the VMMR0 module to get the SUPDRVSESSION::pSessionVM member. * * @returns The associated VM pointer. * @param pSession The session of the current thread. */ SUPR0DECL(PVM) SUPR0GetSessionVM(PSUPDRVSESSION pSession) { AssertReturn(SUP_IS_SESSION_VALID(pSession), NULL); return pSession->pSessionVM; } /** * API for the VMMR0 module to get the SUPDRVSESSION::pSessionGVM member. * * @returns The associated GVM pointer. * @param pSession The session of the current thread. */ SUPR0DECL(PGVM) SUPR0GetSessionGVM(PSUPDRVSESSION pSession) { AssertReturn(SUP_IS_SESSION_VALID(pSession), NULL); return pSession->pSessionGVM; } /** * API for the VMMR0 module to work the SUPDRVSESSION::pSessionVM member. * * This will fail if there is already a VM associated with the session and pVM * isn't NULL. * * @retval VINF_SUCCESS * @retval VERR_ALREADY_EXISTS if there already is a VM associated with the * session. * @retval VERR_INVALID_PARAMETER if only one of the parameters are NULL or if * the session is invalid. * * @param pSession The session of the current thread. * @param pGVM The GVM to associate with the session. Pass NULL to * dissassociate. * @param pVM The VM to associate with the session. Pass NULL to * dissassociate. */ SUPR0DECL(int) SUPR0SetSessionVM(PSUPDRVSESSION pSession, PGVM pGVM, PVM pVM) { AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertReturn((pGVM != NULL) == (pVM != NULL), VERR_INVALID_PARAMETER); RTSpinlockAcquire(pSession->pDevExt->Spinlock); if (pGVM) { if (!pSession->pSessionGVM) { pSession->pSessionGVM = pGVM; pSession->pSessionVM = pVM; pSession->pFastIoCtrlVM = NULL; } else { RTSpinlockRelease(pSession->pDevExt->Spinlock); SUPR0Printf("SUPR0SetSessionVM: Unable to associated GVM/VM %p/%p with session %p as it has %p/%p already!\n", pGVM, pVM, pSession, pSession->pSessionGVM, pSession->pSessionVM); return VERR_ALREADY_EXISTS; } } else { pSession->pSessionGVM = NULL; pSession->pSessionVM = NULL; pSession->pFastIoCtrlVM = NULL; } RTSpinlockRelease(pSession->pDevExt->Spinlock); return VINF_SUCCESS; } /** @copydoc RTLogGetDefaultInstanceEx * @remarks To allow overriding RTLogGetDefaultInstanceEx locally. */ SUPR0DECL(struct RTLOGGER *) SUPR0GetDefaultLogInstanceEx(uint32_t fFlagsAndGroup) { return RTLogGetDefaultInstanceEx(fFlagsAndGroup); } /** @copydoc RTLogRelGetDefaultInstanceEx * @remarks To allow overriding RTLogRelGetDefaultInstanceEx locally. */ SUPR0DECL(struct RTLOGGER *) SUPR0GetDefaultLogRelInstanceEx(uint32_t fFlagsAndGroup) { return RTLogRelGetDefaultInstanceEx(fFlagsAndGroup); } /** * Lock pages. * * @returns IPRT status code. * @param pSession Session to which the locked memory should be associated. * @param pvR3 Start of the memory range to lock. * This must be page aligned. * @param cPages Number of pages to lock. * @param paPages Where to put the physical addresses of locked memory. */ SUPR0DECL(int) SUPR0LockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t cPages, PRTHCPHYS paPages) { int rc; SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED }; const size_t cb = (size_t)cPages << PAGE_SHIFT; LogFlow(("SUPR0LockMem: pSession=%p pvR3=%p cPages=%d paPages=%p\n", pSession, (void *)pvR3, cPages, paPages)); /* * Verify input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrReturn(paPages, VERR_INVALID_PARAMETER); if ( RT_ALIGN_R3PT(pvR3, PAGE_SIZE, RTR3PTR) != pvR3 || !pvR3) { Log(("pvR3 (%p) must be page aligned and not NULL!\n", (void *)pvR3)); return VERR_INVALID_PARAMETER; } /* * Let IPRT do the job. */ Mem.eType = MEMREF_TYPE_LOCKED; rc = RTR0MemObjLockUser(&Mem.MemObj, pvR3, cb, RTMEM_PROT_READ | RTMEM_PROT_WRITE, NIL_RTR0PROCESS); if (RT_SUCCESS(rc)) { uint32_t iPage = cPages; AssertMsg(RTR0MemObjAddressR3(Mem.MemObj) == pvR3, ("%p == %p\n", RTR0MemObjAddressR3(Mem.MemObj), pvR3)); AssertMsg(RTR0MemObjSize(Mem.MemObj) == cb, ("%x == %x\n", RTR0MemObjSize(Mem.MemObj), cb)); while (iPage-- > 0) { paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MemObj, iPage); if (RT_UNLIKELY(paPages[iPage] == NIL_RTCCPHYS)) { AssertMsgFailed(("iPage=%d\n", iPage)); rc = VERR_INTERNAL_ERROR; break; } } if (RT_SUCCESS(rc)) rc = supdrvMemAdd(&Mem, pSession); if (RT_FAILURE(rc)) { int rc2 = RTR0MemObjFree(Mem.MemObj, false); AssertRC(rc2); } } return rc; } /** * Unlocks the memory pointed to by pv. * * @returns IPRT status code. * @param pSession Session to which the memory was locked. * @param pvR3 Memory to unlock. */ SUPR0DECL(int) SUPR0UnlockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3) { LogFlow(("SUPR0UnlockMem: pSession=%p pvR3=%p\n", pSession, (void *)pvR3)); AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); return supdrvMemRelease(pSession, (RTHCUINTPTR)pvR3, MEMREF_TYPE_LOCKED); } /** * Allocates a chunk of page aligned memory with contiguous and fixed physical * backing. * * @returns IPRT status code. * @param pSession Session data. * @param cPages Number of pages to allocate. * @param ppvR0 Where to put the address of Ring-0 mapping the allocated memory. * @param ppvR3 Where to put the address of Ring-3 mapping the allocated memory. * @param pHCPhys Where to put the physical address of allocated memory. */ SUPR0DECL(int) SUPR0ContAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS pHCPhys) { int rc; SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED }; LogFlow(("SUPR0ContAlloc: pSession=%p cPages=%d ppvR0=%p ppvR3=%p pHCPhys=%p\n", pSession, cPages, ppvR0, ppvR3, pHCPhys)); /* * Validate input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); if (!ppvR3 || !ppvR0 || !pHCPhys) { Log(("Null pointer. All of these should be set: pSession=%p ppvR0=%p ppvR3=%p pHCPhys=%p\n", pSession, ppvR0, ppvR3, pHCPhys)); return VERR_INVALID_PARAMETER; } if (cPages < 1 || cPages >= 256) { Log(("Illegal request cPages=%d, must be greater than 0 and smaller than 256.\n", cPages)); return VERR_PAGE_COUNT_OUT_OF_RANGE; } /* * Let IPRT do the job. */ rc = RTR0MemObjAllocCont(&Mem.MemObj, cPages << PAGE_SHIFT, true /* executable R0 mapping */); if (RT_SUCCESS(rc)) { int rc2; rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0, RTMEM_PROT_EXEC | RTMEM_PROT_WRITE | RTMEM_PROT_READ, NIL_RTR0PROCESS); if (RT_SUCCESS(rc)) { Mem.eType = MEMREF_TYPE_CONT; rc = supdrvMemAdd(&Mem, pSession); if (!rc) { *ppvR0 = RTR0MemObjAddress(Mem.MemObj); *ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3); *pHCPhys = RTR0MemObjGetPagePhysAddr(Mem.MemObj, 0); return 0; } rc2 = RTR0MemObjFree(Mem.MapObjR3, false); AssertRC(rc2); } rc2 = RTR0MemObjFree(Mem.MemObj, false); AssertRC(rc2); } return rc; } /** * Frees memory allocated using SUPR0ContAlloc(). * * @returns IPRT status code. * @param pSession The session to which the memory was allocated. * @param uPtr Pointer to the memory (ring-3 or ring-0). */ SUPR0DECL(int) SUPR0ContFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr) { LogFlow(("SUPR0ContFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr)); AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_CONT); } /** * Allocates a chunk of page aligned memory with fixed physical backing below 4GB. * * The memory isn't zeroed. * * @returns IPRT status code. * @param pSession Session data. * @param cPages Number of pages to allocate. * @param ppvR0 Where to put the address of Ring-0 mapping of the allocated memory. * @param ppvR3 Where to put the address of Ring-3 mapping of the allocated memory. * @param paPages Where to put the physical addresses of allocated memory. */ SUPR0DECL(int) SUPR0LowAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS paPages) { unsigned iPage; int rc; SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED }; LogFlow(("SUPR0LowAlloc: pSession=%p cPages=%d ppvR3=%p ppvR0=%p paPages=%p\n", pSession, cPages, ppvR3, ppvR0, paPages)); /* * Validate input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); if (!ppvR3 || !ppvR0 || !paPages) { Log(("Null pointer. All of these should be set: pSession=%p ppvR3=%p ppvR0=%p paPages=%p\n", pSession, ppvR3, ppvR0, paPages)); return VERR_INVALID_PARAMETER; } if (cPages < 1 || cPages >= 256) { Log(("Illegal request cPages=%d, must be greater than 0 and smaller than 256.\n", cPages)); return VERR_PAGE_COUNT_OUT_OF_RANGE; } /* * Let IPRT do the work. */ rc = RTR0MemObjAllocLow(&Mem.MemObj, cPages << PAGE_SHIFT, true /* executable ring-0 mapping */); if (RT_SUCCESS(rc)) { int rc2; rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0, RTMEM_PROT_EXEC | RTMEM_PROT_WRITE | RTMEM_PROT_READ, NIL_RTR0PROCESS); if (RT_SUCCESS(rc)) { Mem.eType = MEMREF_TYPE_LOW; rc = supdrvMemAdd(&Mem, pSession); if (!rc) { for (iPage = 0; iPage < cPages; iPage++) { paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MemObj, iPage); AssertMsg(!(paPages[iPage] & (PAGE_SIZE - 1)), ("iPage=%d Phys=%RHp\n", paPages[iPage])); } *ppvR0 = RTR0MemObjAddress(Mem.MemObj); *ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3); return 0; } rc2 = RTR0MemObjFree(Mem.MapObjR3, false); AssertRC(rc2); } rc2 = RTR0MemObjFree(Mem.MemObj, false); AssertRC(rc2); } return rc; } /** * Frees memory allocated using SUPR0LowAlloc(). * * @returns IPRT status code. * @param pSession The session to which the memory was allocated. * @param uPtr Pointer to the memory (ring-3 or ring-0). */ SUPR0DECL(int) SUPR0LowFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr) { LogFlow(("SUPR0LowFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr)); AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_LOW); } /** * Allocates a chunk of memory with both R0 and R3 mappings. * The memory is fixed and it's possible to query the physical addresses using SUPR0MemGetPhys(). * * @returns IPRT status code. * @param pSession The session to associated the allocation with. * @param cb Number of bytes to allocate. * @param ppvR0 Where to store the address of the Ring-0 mapping. * @param ppvR3 Where to store the address of the Ring-3 mapping. */ SUPR0DECL(int) SUPR0MemAlloc(PSUPDRVSESSION pSession, uint32_t cb, PRTR0PTR ppvR0, PRTR3PTR ppvR3) { int rc; SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED }; LogFlow(("SUPR0MemAlloc: pSession=%p cb=%d ppvR0=%p ppvR3=%p\n", pSession, cb, ppvR0, ppvR3)); /* * Validate input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrReturn(ppvR0, VERR_INVALID_POINTER); AssertPtrReturn(ppvR3, VERR_INVALID_POINTER); if (cb < 1 || cb >= _4M) { Log(("Illegal request cb=%u; must be greater than 0 and smaller than 4MB.\n", cb)); return VERR_INVALID_PARAMETER; } /* * Let IPRT do the work. */ rc = RTR0MemObjAllocPage(&Mem.MemObj, cb, true /* executable ring-0 mapping */); if (RT_SUCCESS(rc)) { int rc2; rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0, RTMEM_PROT_EXEC | RTMEM_PROT_WRITE | RTMEM_PROT_READ, NIL_RTR0PROCESS); if (RT_SUCCESS(rc)) { Mem.eType = MEMREF_TYPE_MEM; rc = supdrvMemAdd(&Mem, pSession); if (!rc) { *ppvR0 = RTR0MemObjAddress(Mem.MemObj); *ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3); return VINF_SUCCESS; } rc2 = RTR0MemObjFree(Mem.MapObjR3, false); AssertRC(rc2); } rc2 = RTR0MemObjFree(Mem.MemObj, false); AssertRC(rc2); } return rc; } /** * Get the physical addresses of memory allocated using SUPR0MemAlloc(). * * @returns IPRT status code. * @param pSession The session to which the memory was allocated. * @param uPtr The Ring-0 or Ring-3 address returned by SUPR0MemAlloc(). * @param paPages Where to store the physical addresses. */ SUPR0DECL(int) SUPR0MemGetPhys(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, PSUPPAGE paPages) /** @todo switch this bugger to RTHCPHYS */ { PSUPDRVBUNDLE pBundle; LogFlow(("SUPR0MemGetPhys: pSession=%p uPtr=%p paPages=%p\n", pSession, (void *)uPtr, paPages)); /* * Validate input. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrReturn(paPages, VERR_INVALID_POINTER); AssertReturn(uPtr, VERR_INVALID_PARAMETER); /* * Search for the address. */ RTSpinlockAcquire(pSession->Spinlock); for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext) { if (pBundle->cUsed > 0) { unsigned i; for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++) { if ( pBundle->aMem[i].eType == MEMREF_TYPE_MEM && pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ && ( (RTHCUINTPTR)RTR0MemObjAddress(pBundle->aMem[i].MemObj) == uPtr || ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ && RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == uPtr) ) ) { const size_t cPages = RTR0MemObjSize(pBundle->aMem[i].MemObj) >> PAGE_SHIFT; size_t iPage; for (iPage = 0; iPage < cPages; iPage++) { paPages[iPage].Phys = RTR0MemObjGetPagePhysAddr(pBundle->aMem[i].MemObj, iPage); paPages[iPage].uReserved = 0; } RTSpinlockRelease(pSession->Spinlock); return VINF_SUCCESS; } } } } RTSpinlockRelease(pSession->Spinlock); Log(("Failed to find %p!!!\n", (void *)uPtr)); return VERR_INVALID_PARAMETER; } /** * Free memory allocated by SUPR0MemAlloc(). * * @returns IPRT status code. * @param pSession The session owning the allocation. * @param uPtr The Ring-0 or Ring-3 address returned by SUPR0MemAlloc(). */ SUPR0DECL(int) SUPR0MemFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr) { LogFlow(("SUPR0MemFree: pSession=%p uPtr=%p\n", pSession, (void *)uPtr)); AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); return supdrvMemRelease(pSession, uPtr, MEMREF_TYPE_MEM); } /** * Allocates a chunk of memory with a kernel or/and a user mode mapping. * * The memory is fixed and it's possible to query the physical addresses using * SUPR0MemGetPhys(). * * @returns IPRT status code. * @param pSession The session to associated the allocation with. * @param cPages The number of pages to allocate. * @param fFlags Flags, reserved for the future. Must be zero. * @param ppvR3 Where to store the address of the Ring-3 mapping. * NULL if no ring-3 mapping. * @param ppvR0 Where to store the address of the Ring-0 mapping. * NULL if no ring-0 mapping. * @param paPages Where to store the addresses of the pages. Optional. */ SUPR0DECL(int) SUPR0PageAllocEx(PSUPDRVSESSION pSession, uint32_t cPages, uint32_t fFlags, PRTR3PTR ppvR3, PRTR0PTR ppvR0, PRTHCPHYS paPages) { int rc; SUPDRVMEMREF Mem = { NIL_RTR0MEMOBJ, NIL_RTR0MEMOBJ, MEMREF_TYPE_UNUSED }; LogFlow(("SUPR0PageAlloc: pSession=%p cb=%d ppvR3=%p\n", pSession, cPages, ppvR3)); /* * Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrNullReturn(ppvR3, VERR_INVALID_POINTER); AssertPtrNullReturn(ppvR0, VERR_INVALID_POINTER); AssertReturn(ppvR3 || ppvR0, VERR_INVALID_PARAMETER); AssertReturn(!fFlags, VERR_INVALID_PARAMETER); if (cPages < 1 || cPages > VBOX_MAX_ALLOC_PAGE_COUNT) { Log(("SUPR0PageAlloc: Illegal request cb=%u; must be greater than 0 and smaller than %uMB (VBOX_MAX_ALLOC_PAGE_COUNT pages).\n", cPages, VBOX_MAX_ALLOC_PAGE_COUNT * (_1M / _4K))); return VERR_PAGE_COUNT_OUT_OF_RANGE; } /* * Let IPRT do the work. */ if (ppvR0) rc = RTR0MemObjAllocPage(&Mem.MemObj, (size_t)cPages * PAGE_SIZE, true /* fExecutable */); else rc = RTR0MemObjAllocPhysNC(&Mem.MemObj, (size_t)cPages * PAGE_SIZE, NIL_RTHCPHYS); if (RT_SUCCESS(rc)) { int rc2; if (ppvR3) rc = RTR0MemObjMapUser(&Mem.MapObjR3, Mem.MemObj, (RTR3PTR)-1, 0, RTMEM_PROT_WRITE | RTMEM_PROT_READ, NIL_RTR0PROCESS); else Mem.MapObjR3 = NIL_RTR0MEMOBJ; if (RT_SUCCESS(rc)) { Mem.eType = MEMREF_TYPE_PAGE; rc = supdrvMemAdd(&Mem, pSession); if (!rc) { if (ppvR3) *ppvR3 = RTR0MemObjAddressR3(Mem.MapObjR3); if (ppvR0) *ppvR0 = RTR0MemObjAddress(Mem.MemObj); if (paPages) { uint32_t iPage = cPages; while (iPage-- > 0) { paPages[iPage] = RTR0MemObjGetPagePhysAddr(Mem.MapObjR3, iPage); Assert(paPages[iPage] != NIL_RTHCPHYS); } } return VINF_SUCCESS; } rc2 = RTR0MemObjFree(Mem.MapObjR3, false); AssertRC(rc2); } rc2 = RTR0MemObjFree(Mem.MemObj, false); AssertRC(rc2); } return rc; } /** * Maps a chunk of memory previously allocated by SUPR0PageAllocEx into kernel * space. * * @returns IPRT status code. * @param pSession The session to associated the allocation with. * @param pvR3 The ring-3 address returned by SUPR0PageAllocEx. * @param offSub Where to start mapping. Must be page aligned. * @param cbSub How much to map. Must be page aligned. * @param fFlags Flags, MBZ. * @param ppvR0 Where to return the address of the ring-0 mapping on * success. */ SUPR0DECL(int) SUPR0PageMapKernel(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t offSub, uint32_t cbSub, uint32_t fFlags, PRTR0PTR ppvR0) { int rc; PSUPDRVBUNDLE pBundle; RTR0MEMOBJ hMemObj = NIL_RTR0MEMOBJ; LogFlow(("SUPR0PageMapKernel: pSession=%p pvR3=%p offSub=%#x cbSub=%#x\n", pSession, pvR3, offSub, cbSub)); /* * Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrNullReturn(ppvR0, VERR_INVALID_POINTER); AssertReturn(!fFlags, VERR_INVALID_PARAMETER); AssertReturn(!(offSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER); AssertReturn(!(cbSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER); AssertReturn(cbSub, VERR_INVALID_PARAMETER); /* * Find the memory object. */ RTSpinlockAcquire(pSession->Spinlock); for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext) { if (pBundle->cUsed > 0) { unsigned i; for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++) { if ( ( pBundle->aMem[i].eType == MEMREF_TYPE_PAGE && pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ && pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ && RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == pvR3) || ( pBundle->aMem[i].eType == MEMREF_TYPE_LOCKED && pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ && pBundle->aMem[i].MapObjR3 == NIL_RTR0MEMOBJ && RTR0MemObjAddressR3(pBundle->aMem[i].MemObj) == pvR3)) { hMemObj = pBundle->aMem[i].MemObj; break; } } } } RTSpinlockRelease(pSession->Spinlock); rc = VERR_INVALID_PARAMETER; if (hMemObj != NIL_RTR0MEMOBJ) { /* * Do some further input validations before calling IPRT. * (Cleanup is done indirectly by telling RTR0MemObjFree to include mappings.) */ size_t cbMemObj = RTR0MemObjSize(hMemObj); if ( offSub < cbMemObj && cbSub <= cbMemObj && offSub + cbSub <= cbMemObj) { RTR0MEMOBJ hMapObj; rc = RTR0MemObjMapKernelEx(&hMapObj, hMemObj, (void *)-1, 0, RTMEM_PROT_READ | RTMEM_PROT_WRITE, offSub, cbSub); if (RT_SUCCESS(rc)) *ppvR0 = RTR0MemObjAddress(hMapObj); } else SUPR0Printf("SUPR0PageMapKernel: cbMemObj=%#x offSub=%#x cbSub=%#x\n", cbMemObj, offSub, cbSub); } return rc; } /** * Changes the page level protection of one or more pages previously allocated * by SUPR0PageAllocEx. * * @returns IPRT status code. * @param pSession The session to associated the allocation with. * @param pvR3 The ring-3 address returned by SUPR0PageAllocEx. * NIL_RTR3PTR if the ring-3 mapping should be unaffected. * @param pvR0 The ring-0 address returned by SUPR0PageAllocEx. * NIL_RTR0PTR if the ring-0 mapping should be unaffected. * @param offSub Where to start changing. Must be page aligned. * @param cbSub How much to change. Must be page aligned. * @param fProt The new page level protection, see RTMEM_PROT_*. */ SUPR0DECL(int) SUPR0PageProtect(PSUPDRVSESSION pSession, RTR3PTR pvR3, RTR0PTR pvR0, uint32_t offSub, uint32_t cbSub, uint32_t fProt) { int rc; PSUPDRVBUNDLE pBundle; RTR0MEMOBJ hMemObjR0 = NIL_RTR0MEMOBJ; RTR0MEMOBJ hMemObjR3 = NIL_RTR0MEMOBJ; LogFlow(("SUPR0PageProtect: pSession=%p pvR3=%p pvR0=%p offSub=%#x cbSub=%#x fProt-%#x\n", pSession, pvR3, pvR0, offSub, cbSub, fProt)); /* * Validate input. The allowed allocation size must be at least equal to the maximum guest VRAM size. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertReturn(!(fProt & ~(RTMEM_PROT_READ | RTMEM_PROT_WRITE | RTMEM_PROT_EXEC | RTMEM_PROT_NONE)), VERR_INVALID_PARAMETER); AssertReturn(!(offSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER); AssertReturn(!(cbSub & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER); AssertReturn(cbSub, VERR_INVALID_PARAMETER); /* * Find the memory object. */ RTSpinlockAcquire(pSession->Spinlock); for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext) { if (pBundle->cUsed > 0) { unsigned i; for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++) { if ( pBundle->aMem[i].eType == MEMREF_TYPE_PAGE && pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ && ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ || pvR3 == NIL_RTR3PTR) && ( pvR0 == NIL_RTR0PTR || RTR0MemObjAddress(pBundle->aMem[i].MemObj) == pvR0) && ( pvR3 == NIL_RTR3PTR || RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == pvR3)) { if (pvR0 != NIL_RTR0PTR) hMemObjR0 = pBundle->aMem[i].MemObj; if (pvR3 != NIL_RTR3PTR) hMemObjR3 = pBundle->aMem[i].MapObjR3; break; } } } } RTSpinlockRelease(pSession->Spinlock); rc = VERR_INVALID_PARAMETER; if ( hMemObjR0 != NIL_RTR0MEMOBJ || hMemObjR3 != NIL_RTR0MEMOBJ) { /* * Do some further input validations before calling IPRT. */ size_t cbMemObj = hMemObjR0 != NIL_RTR0PTR ? RTR0MemObjSize(hMemObjR0) : RTR0MemObjSize(hMemObjR3); if ( offSub < cbMemObj && cbSub <= cbMemObj && offSub + cbSub <= cbMemObj) { rc = VINF_SUCCESS; if (hMemObjR3 != NIL_RTR0PTR) rc = RTR0MemObjProtect(hMemObjR3, offSub, cbSub, fProt); if (hMemObjR0 != NIL_RTR0PTR && RT_SUCCESS(rc)) rc = RTR0MemObjProtect(hMemObjR0, offSub, cbSub, fProt); } else SUPR0Printf("SUPR0PageMapKernel: cbMemObj=%#x offSub=%#x cbSub=%#x\n", cbMemObj, offSub, cbSub); } return rc; } /** * Free memory allocated by SUPR0PageAlloc() and SUPR0PageAllocEx(). * * @returns IPRT status code. * @param pSession The session owning the allocation. * @param pvR3 The Ring-3 address returned by SUPR0PageAlloc() or * SUPR0PageAllocEx(). */ SUPR0DECL(int) SUPR0PageFree(PSUPDRVSESSION pSession, RTR3PTR pvR3) { LogFlow(("SUPR0PageFree: pSession=%p pvR3=%p\n", pSession, (void *)pvR3)); AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); return supdrvMemRelease(pSession, (RTHCUINTPTR)pvR3, MEMREF_TYPE_PAGE); } /** * Reports a bad context, currenctly that means EFLAGS.AC is 0 instead of 1. * * @param pDevExt The device extension. * @param pszFile The source file where the caller detected the bad * context. * @param uLine The line number in @a pszFile. * @param pszExtra Optional additional message to give further hints. */ void VBOXCALL supdrvBadContext(PSUPDRVDEVEXT pDevExt, const char *pszFile, uint32_t uLine, const char *pszExtra) { uint32_t cCalls; /* * Shorten the filename before displaying the message. */ for (;;) { const char *pszTmp = strchr(pszFile, '/'); if (!pszTmp) pszTmp = strchr(pszFile, '\\'); if (!pszTmp) break; pszFile = pszTmp + 1; } if (RT_VALID_PTR(pszExtra) && *pszExtra) SUPR0Printf("vboxdrv: Bad CPU context error at line %u in %s: %s\n", uLine, pszFile, pszExtra); else SUPR0Printf("vboxdrv: Bad CPU context error at line %u in %s!\n", uLine, pszFile); /* * Record the incident so that we stand a chance of blocking I/O controls * before panicing the system. */ cCalls = ASMAtomicIncU32(&pDevExt->cBadContextCalls); if (cCalls > UINT32_MAX - _1K) ASMAtomicWriteU32(&pDevExt->cBadContextCalls, UINT32_MAX - _1K); } /** * Reports a bad context, currenctly that means EFLAGS.AC is 0 instead of 1. * * @param pSession The session of the caller. * @param pszFile The source file where the caller detected the bad * context. * @param uLine The line number in @a pszFile. * @param pszExtra Optional additional message to give further hints. */ SUPR0DECL(void) SUPR0BadContext(PSUPDRVSESSION pSession, const char *pszFile, uint32_t uLine, const char *pszExtra) { PSUPDRVDEVEXT pDevExt; AssertReturnVoid(SUP_IS_SESSION_VALID(pSession)); pDevExt = pSession->pDevExt; supdrvBadContext(pDevExt, pszFile, uLine, pszExtra); } /** * Gets the paging mode of the current CPU. * * @returns Paging mode, SUPPAGEINGMODE_INVALID on error. */ SUPR0DECL(SUPPAGINGMODE) SUPR0GetPagingMode(void) { SUPPAGINGMODE enmMode; RTR0UINTREG cr0 = ASMGetCR0(); if ((cr0 & (X86_CR0_PG | X86_CR0_PE)) != (X86_CR0_PG | X86_CR0_PE)) enmMode = SUPPAGINGMODE_INVALID; else { RTR0UINTREG cr4 = ASMGetCR4(); uint32_t fNXEPlusLMA = 0; if (cr4 & X86_CR4_PAE) { uint32_t fExtFeatures = ASMCpuId_EDX(0x80000001); if (fExtFeatures & (X86_CPUID_EXT_FEATURE_EDX_NX | X86_CPUID_EXT_FEATURE_EDX_LONG_MODE)) { uint64_t efer = ASMRdMsr(MSR_K6_EFER); if ((fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_NX) && (efer & MSR_K6_EFER_NXE)) fNXEPlusLMA |= RT_BIT(0); if ((fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_LONG_MODE) && (efer & MSR_K6_EFER_LMA)) fNXEPlusLMA |= RT_BIT(1); } } switch ((cr4 & (X86_CR4_PAE | X86_CR4_PGE)) | fNXEPlusLMA) { case 0: enmMode = SUPPAGINGMODE_32_BIT; break; case X86_CR4_PGE: enmMode = SUPPAGINGMODE_32_BIT_GLOBAL; break; case X86_CR4_PAE: enmMode = SUPPAGINGMODE_PAE; break; case X86_CR4_PAE | RT_BIT(0): enmMode = SUPPAGINGMODE_PAE_NX; break; case X86_CR4_PAE | X86_CR4_PGE: enmMode = SUPPAGINGMODE_PAE_GLOBAL; break; case X86_CR4_PAE | X86_CR4_PGE | RT_BIT(0): enmMode = SUPPAGINGMODE_PAE_GLOBAL; break; case RT_BIT(1) | X86_CR4_PAE: enmMode = SUPPAGINGMODE_AMD64; break; case RT_BIT(1) | X86_CR4_PAE | RT_BIT(0): enmMode = SUPPAGINGMODE_AMD64_NX; break; case RT_BIT(1) | X86_CR4_PAE | X86_CR4_PGE: enmMode = SUPPAGINGMODE_AMD64_GLOBAL; break; case RT_BIT(1) | X86_CR4_PAE | X86_CR4_PGE | RT_BIT(0): enmMode = SUPPAGINGMODE_AMD64_GLOBAL_NX; break; default: AssertMsgFailed(("Cannot happen! cr4=%#x fNXEPlusLMA=%d\n", cr4, fNXEPlusLMA)); enmMode = SUPPAGINGMODE_INVALID; break; } } return enmMode; } /** * Change CR4 and take care of the kernel CR4 shadow if applicable. * * CR4 shadow handling is required for Linux >= 4.0. Calling this function * instead of ASMSetCR4() is only necessary for semi-permanent CR4 changes * for code with interrupts enabled. * * @returns the old CR4 value. * * @param fOrMask bits to be set in CR4. * @param fAndMask bits to be cleard in CR4. * * @remarks Must be called with preemption/interrupts disabled. */ SUPR0DECL(RTCCUINTREG) SUPR0ChangeCR4(RTCCUINTREG fOrMask, RTCCUINTREG fAndMask) { #ifdef RT_OS_LINUX return supdrvOSChangeCR4(fOrMask, fAndMask); #else RTCCUINTREG uOld = ASMGetCR4(); RTCCUINTREG uNew = (uOld & fAndMask) | fOrMask; if (uNew != uOld) ASMSetCR4(uNew); return uOld; #endif } /** * Enables or disabled hardware virtualization extensions using native OS APIs. * * @returns VBox status code. * @retval VINF_SUCCESS on success. * @retval VERR_NOT_SUPPORTED if not supported by the native OS. * * @param fEnable Whether to enable or disable. */ SUPR0DECL(int) SUPR0EnableVTx(bool fEnable) { #ifdef RT_OS_DARWIN return supdrvOSEnableVTx(fEnable); #else RT_NOREF1(fEnable); return VERR_NOT_SUPPORTED; #endif } /** * Suspends hardware virtualization extensions using the native OS API. * * This is called prior to entering raw-mode context. * * @returns @c true if suspended, @c false if not. */ SUPR0DECL(bool) SUPR0SuspendVTxOnCpu(void) { #ifdef RT_OS_DARWIN return supdrvOSSuspendVTxOnCpu(); #else return false; #endif } /** * Resumes hardware virtualization extensions using the native OS API. * * This is called after to entering raw-mode context. * * @param fSuspended The return value of SUPR0SuspendVTxOnCpu. */ SUPR0DECL(void) SUPR0ResumeVTxOnCpu(bool fSuspended) { #ifdef RT_OS_DARWIN supdrvOSResumeVTxOnCpu(fSuspended); #else RT_NOREF1(fSuspended); Assert(!fSuspended); #endif } SUPR0DECL(int) SUPR0GetCurrentGdtRw(RTHCUINTPTR *pGdtRw) { #ifdef RT_OS_LINUX return supdrvOSGetCurrentGdtRw(pGdtRw); #else NOREF(pGdtRw); return VERR_NOT_IMPLEMENTED; #endif } /** * Checks if raw-mode is usable on this system. * * The reasons why raw-mode isn't safe to use are host specific. For example on * Windows the Hyper-V root partition may perhapse not allow important bits in * CR4 to be changed, which would make it impossible to do a world switch. * * @returns VBox status code. */ SUPR0DECL(int) SUPR0GetRawModeUsability(void) { #ifdef RT_OS_WINDOWS return supdrvOSGetRawModeUsability(); #else return VINF_SUCCESS; #endif } /** * Gets AMD-V and VT-x support for the calling CPU. * * @returns VBox status code. * @param pfCaps Where to store whether VT-x (SUPVTCAPS_VT_X) or AMD-V * (SUPVTCAPS_AMD_V) is supported. */ SUPR0DECL(int) SUPR0GetVTSupport(uint32_t *pfCaps) { Assert(pfCaps); *pfCaps = 0; /* Check if the CPU even supports CPUID (extremely ancient CPUs). */ if (ASMHasCpuId()) { /* Check the range of standard CPUID leafs. */ uint32_t uMaxLeaf, uVendorEbx, uVendorEcx, uVendorEdx; ASMCpuId(0, &uMaxLeaf, &uVendorEbx, &uVendorEcx, &uVendorEdx); if (ASMIsValidStdRange(uMaxLeaf)) { /* Query the standard CPUID leaf. */ uint32_t fFeatEcx, fFeatEdx, uDummy; ASMCpuId(1, &uDummy, &uDummy, &fFeatEcx, &fFeatEdx); /* Check if the vendor is Intel (or compatible). */ if ( ASMIsIntelCpuEx(uVendorEbx, uVendorEcx, uVendorEdx) || ASMIsViaCentaurCpuEx(uVendorEbx, uVendorEcx, uVendorEdx)) { /* Check VT-x support. In addition, VirtualBox requires MSR and FXSAVE/FXRSTOR to function. */ if ( (fFeatEcx & X86_CPUID_FEATURE_ECX_VMX) && (fFeatEdx & X86_CPUID_FEATURE_EDX_MSR) && (fFeatEdx & X86_CPUID_FEATURE_EDX_FXSR)) { *pfCaps = SUPVTCAPS_VT_X; return VINF_SUCCESS; } return VERR_VMX_NO_VMX; } /* Check if the vendor is AMD (or compatible). */ if (ASMIsAmdCpuEx(uVendorEbx, uVendorEcx, uVendorEdx)) { uint32_t fExtFeatEcx, uExtMaxId; ASMCpuId(0x80000000, &uExtMaxId, &uDummy, &uDummy, &uDummy); ASMCpuId(0x80000001, &uDummy, &uDummy, &fExtFeatEcx, &uDummy); /* Check AMD-V support. In addition, VirtualBox requires MSR and FXSAVE/FXRSTOR to function. */ if ( ASMIsValidExtRange(uExtMaxId) && uExtMaxId >= 0x8000000a && (fExtFeatEcx & X86_CPUID_AMD_FEATURE_ECX_SVM) && (fFeatEdx & X86_CPUID_FEATURE_EDX_MSR) && (fFeatEdx & X86_CPUID_FEATURE_EDX_FXSR)) { *pfCaps = SUPVTCAPS_AMD_V; return VINF_SUCCESS; } return VERR_SVM_NO_SVM; } } } return VERR_UNSUPPORTED_CPU; } /** * Checks if Intel VT-x feature is usable on this CPU. * * @returns VBox status code. * @param pfIsSmxModeAmbiguous Where to return whether the SMX mode causes * ambiguity that makes us unsure whether we * really can use VT-x or not. * * @remarks Must be called with preemption disabled. * The caller is also expected to check that the CPU is an Intel (or * VIA) CPU -and- that it supports VT-x. Otherwise, this function * might throw a \#GP fault as it tries to read/write MSRs that may not * be present! */ SUPR0DECL(int) SUPR0GetVmxUsability(bool *pfIsSmxModeAmbiguous) { uint64_t fFeatMsr; bool fMaybeSmxMode; bool fMsrLocked; bool fSmxVmxAllowed; bool fVmxAllowed; bool fIsSmxModeAmbiguous; int rc; Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD)); fFeatMsr = ASMRdMsr(MSR_IA32_FEATURE_CONTROL); fMaybeSmxMode = RT_BOOL(ASMGetCR4() & X86_CR4_SMXE); fMsrLocked = RT_BOOL(fFeatMsr & MSR_IA32_FEATURE_CONTROL_LOCK); fSmxVmxAllowed = RT_BOOL(fFeatMsr & MSR_IA32_FEATURE_CONTROL_SMX_VMXON); fVmxAllowed = RT_BOOL(fFeatMsr & MSR_IA32_FEATURE_CONTROL_VMXON); fIsSmxModeAmbiguous = false; rc = VERR_INTERNAL_ERROR_5; /* Check if the LOCK bit is set but excludes the required VMXON bit. */ if (fMsrLocked) { if (fVmxAllowed && fSmxVmxAllowed) rc = VINF_SUCCESS; else if (!fVmxAllowed && !fSmxVmxAllowed) rc = VERR_VMX_MSR_ALL_VMX_DISABLED; else if (!fMaybeSmxMode) { if (fVmxAllowed) rc = VINF_SUCCESS; else rc = VERR_VMX_MSR_VMX_DISABLED; } else { /* * CR4.SMXE is set but this doesn't mean the CPU is necessarily in SMX mode. We shall assume * that it is -not- and that it is a stupid BIOS/OS setting CR4.SMXE for no good reason. * See @bugref{6873}. */ Assert(fMaybeSmxMode == true); fIsSmxModeAmbiguous = true; rc = VINF_SUCCESS; } } else { /* * MSR is not yet locked; we can change it ourselves here. Once the lock bit is set, * this MSR can no longer be modified. * * Set both the VMX and SMX_VMX bits (if supported) as we can't determine SMX mode * accurately. See @bugref{6873}. * * We need to check for SMX hardware support here, before writing the MSR as * otherwise we will #GP fault on CPUs that do not support it. Callers do not check * for it. */ uint32_t fFeaturesECX, uDummy; #ifdef VBOX_STRICT /* Callers should have verified these at some point. */ uint32_t uMaxId, uVendorEBX, uVendorECX, uVendorEDX; ASMCpuId(0, &uMaxId, &uVendorEBX, &uVendorECX, &uVendorEDX); Assert(ASMIsValidStdRange(uMaxId)); Assert( ASMIsIntelCpuEx( uVendorEBX, uVendorECX, uVendorEDX) || ASMIsViaCentaurCpuEx(uVendorEBX, uVendorECX, uVendorEDX)); #endif ASMCpuId(1, &uDummy, &uDummy, &fFeaturesECX, &uDummy); bool fSmxVmxHwSupport = false; if ( (fFeaturesECX & X86_CPUID_FEATURE_ECX_VMX) && (fFeaturesECX & X86_CPUID_FEATURE_ECX_SMX)) fSmxVmxHwSupport = true; fFeatMsr |= MSR_IA32_FEATURE_CONTROL_LOCK | MSR_IA32_FEATURE_CONTROL_VMXON; if (fSmxVmxHwSupport) fFeatMsr |= MSR_IA32_FEATURE_CONTROL_SMX_VMXON; /* * Commit. */ ASMWrMsr(MSR_IA32_FEATURE_CONTROL, fFeatMsr); /* * Verify. */ fFeatMsr = ASMRdMsr(MSR_IA32_FEATURE_CONTROL); fMsrLocked = RT_BOOL(fFeatMsr & MSR_IA32_FEATURE_CONTROL_LOCK); if (fMsrLocked) { fSmxVmxAllowed = RT_BOOL(fFeatMsr & MSR_IA32_FEATURE_CONTROL_SMX_VMXON); fVmxAllowed = RT_BOOL(fFeatMsr & MSR_IA32_FEATURE_CONTROL_VMXON); if ( fVmxAllowed && ( !fSmxVmxHwSupport || fSmxVmxAllowed)) rc = VINF_SUCCESS; else rc = !fSmxVmxHwSupport ? VERR_VMX_MSR_VMX_ENABLE_FAILED : VERR_VMX_MSR_SMX_VMX_ENABLE_FAILED; } else rc = VERR_VMX_MSR_LOCKING_FAILED; } if (pfIsSmxModeAmbiguous) *pfIsSmxModeAmbiguous = fIsSmxModeAmbiguous; return rc; } /** * Checks if AMD-V SVM feature is usable on this CPU. * * @returns VBox status code. * @param fInitSvm If usable, try to initialize SVM on this CPU. * * @remarks Must be called with preemption disabled. */ SUPR0DECL(int) SUPR0GetSvmUsability(bool fInitSvm) { int rc; uint64_t fVmCr; uint64_t fEfer; Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD)); fVmCr = ASMRdMsr(MSR_K8_VM_CR); if (!(fVmCr & MSR_K8_VM_CR_SVM_DISABLE)) { rc = VINF_SUCCESS; if (fInitSvm) { /* Turn on SVM in the EFER MSR. */ fEfer = ASMRdMsr(MSR_K6_EFER); if (fEfer & MSR_K6_EFER_SVME) rc = VERR_SVM_IN_USE; else { ASMWrMsr(MSR_K6_EFER, fEfer | MSR_K6_EFER_SVME); /* Paranoia. */ fEfer = ASMRdMsr(MSR_K6_EFER); if (fEfer & MSR_K6_EFER_SVME) { /* Restore previous value. */ ASMWrMsr(MSR_K6_EFER, fEfer & ~MSR_K6_EFER_SVME); } else rc = VERR_SVM_ILLEGAL_EFER_MSR; } } } else rc = VERR_SVM_DISABLED; return rc; } /** * Queries the AMD-V and VT-x capabilities of the calling CPU. * * @returns VBox status code. * @retval VERR_VMX_NO_VMX * @retval VERR_VMX_MSR_ALL_VMX_DISABLED * @retval VERR_VMX_MSR_VMX_DISABLED * @retval VERR_VMX_MSR_LOCKING_FAILED * @retval VERR_VMX_MSR_VMX_ENABLE_FAILED * @retval VERR_VMX_MSR_SMX_VMX_ENABLE_FAILED * @retval VERR_SVM_NO_SVM * @retval VERR_SVM_DISABLED * @retval VERR_UNSUPPORTED_CPU if not identifiable as an AMD, Intel or VIA * (centaur) CPU. * * @param pfCaps Where to store the capabilities. */ int VBOXCALL supdrvQueryVTCapsInternal(uint32_t *pfCaps) { int rc = VERR_UNSUPPORTED_CPU; bool fIsSmxModeAmbiguous = false; RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER; /* * Input validation. */ AssertPtrReturn(pfCaps, VERR_INVALID_POINTER); *pfCaps = 0; /* We may modify MSRs and re-read them, disable preemption so we make sure we don't migrate CPUs. */ RTThreadPreemptDisable(&PreemptState); /* Check if VT-x/AMD-V is supported. */ rc = SUPR0GetVTSupport(pfCaps); if (RT_SUCCESS(rc)) { /* Check if VT-x is supported. */ if (*pfCaps & SUPVTCAPS_VT_X) { /* Check if VT-x is usable. */ rc = SUPR0GetVmxUsability(&fIsSmxModeAmbiguous); if (RT_SUCCESS(rc)) { /* Query some basic VT-x capabilities (mainly required by our GUI). */ VMXCTLSMSR vtCaps; vtCaps.u = ASMRdMsr(MSR_IA32_VMX_PROCBASED_CTLS); if (vtCaps.n.allowed1 & VMX_PROC_CTLS_USE_SECONDARY_CTLS) { vtCaps.u = ASMRdMsr(MSR_IA32_VMX_PROCBASED_CTLS2); if (vtCaps.n.allowed1 & VMX_PROC_CTLS2_EPT) *pfCaps |= SUPVTCAPS_NESTED_PAGING; if (vtCaps.n.allowed1 & VMX_PROC_CTLS2_UNRESTRICTED_GUEST) *pfCaps |= SUPVTCAPS_VTX_UNRESTRICTED_GUEST; } } } /* Check if AMD-V is supported. */ else if (*pfCaps & SUPVTCAPS_AMD_V) { /* Check is SVM is usable. */ rc = SUPR0GetSvmUsability(false /* fInitSvm */); if (RT_SUCCESS(rc)) { /* Query some basic AMD-V capabilities (mainly required by our GUI). */ uint32_t uDummy, fSvmFeatures; ASMCpuId(0x8000000a, &uDummy, &uDummy, &uDummy, &fSvmFeatures); if (fSvmFeatures & X86_CPUID_SVM_FEATURE_EDX_NESTED_PAGING) *pfCaps |= SUPVTCAPS_NESTED_PAGING; } } } /* Restore preemption. */ RTThreadPreemptRestore(&PreemptState); /* After restoring preemption, if we may be in SMX mode, print a warning as it's difficult to debug such problems. */ if (fIsSmxModeAmbiguous) SUPR0Printf(("WARNING! CR4 hints SMX mode but your CPU is too secretive. Proceeding anyway... We wish you good luck!\n")); return rc; } /** * Queries the AMD-V and VT-x capabilities of the calling CPU. * * @returns VBox status code. * @retval VERR_VMX_NO_VMX * @retval VERR_VMX_MSR_ALL_VMX_DISABLED * @retval VERR_VMX_MSR_VMX_DISABLED * @retval VERR_VMX_MSR_LOCKING_FAILED * @retval VERR_VMX_MSR_VMX_ENABLE_FAILED * @retval VERR_VMX_MSR_SMX_VMX_ENABLE_FAILED * @retval VERR_SVM_NO_SVM * @retval VERR_SVM_DISABLED * @retval VERR_UNSUPPORTED_CPU if not identifiable as an AMD, Intel or VIA * (centaur) CPU. * * @param pSession The session handle. * @param pfCaps Where to store the capabilities. */ SUPR0DECL(int) SUPR0QueryVTCaps(PSUPDRVSESSION pSession, uint32_t *pfCaps) { /* * Input validation. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrReturn(pfCaps, VERR_INVALID_POINTER); /* * Call common worker. */ return supdrvQueryVTCapsInternal(pfCaps); } /** * Queries the CPU microcode revision. * * @returns VBox status code. * @retval VERR_UNSUPPORTED_CPU if not identifiable as a processor with * readable microcode rev. * * @param puRevision Where to store the microcode revision. */ int VBOXCALL supdrvQueryUcodeRev(uint32_t *puRevision) { int rc = VERR_UNSUPPORTED_CPU; RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER; /* * Input validation. */ AssertPtrReturn(puRevision, VERR_INVALID_POINTER); *puRevision = 0; /* Disable preemption so we make sure we don't migrate CPUs, just in case. */ /* NB: We assume that there aren't mismatched microcode revs in the system. */ RTThreadPreemptDisable(&PreemptState); if (ASMHasCpuId()) { uint32_t uDummy, uTFMSEAX; uint32_t uMaxId, uVendorEBX, uVendorECX, uVendorEDX; ASMCpuId(0, &uMaxId, &uVendorEBX, &uVendorECX, &uVendorEDX); ASMCpuId(1, &uTFMSEAX, &uDummy, &uDummy, &uDummy); if (ASMIsValidStdRange(uMaxId)) { uint64_t uRevMsr; if (ASMIsIntelCpuEx(uVendorEBX, uVendorECX, uVendorEDX)) { /* Architectural MSR available on Pentium Pro and later. */ if (ASMGetCpuFamily(uTFMSEAX) >= 6) { /* Revision is in the high dword. */ uRevMsr = ASMRdMsr(MSR_IA32_BIOS_SIGN_ID); *puRevision = RT_HIDWORD(uRevMsr); rc = VINF_SUCCESS; } } else if (ASMIsAmdCpuEx(uVendorEBX, uVendorECX, uVendorEDX)) { /* Not well documented, but at least all AMD64 CPUs support this. */ if (ASMGetCpuFamily(uTFMSEAX) >= 15) { /* Revision is in the low dword. */ uRevMsr = ASMRdMsr(MSR_IA32_BIOS_SIGN_ID); /* Same MSR as Intel. */ *puRevision = RT_LODWORD(uRevMsr); rc = VINF_SUCCESS; } } } } RTThreadPreemptRestore(&PreemptState); return rc; } /** * Queries the CPU microcode revision. * * @returns VBox status code. * @retval VERR_UNSUPPORTED_CPU if not identifiable as a processor with * readable microcode rev. * * @param pSession The session handle. * @param puRevision Where to store the microcode revision. */ SUPR0DECL(int) SUPR0QueryUcodeRev(PSUPDRVSESSION pSession, uint32_t *puRevision) { /* * Input validation. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrReturn(puRevision, VERR_INVALID_POINTER); /* * Call common worker. */ return supdrvQueryUcodeRev(puRevision); } /** * Register a component factory with the support driver. * * This is currently restricted to kernel sessions only. * * @returns VBox status code. * @retval VINF_SUCCESS on success. * @retval VERR_NO_MEMORY if we're out of memory. * @retval VERR_ALREADY_EXISTS if the factory has already been registered. * @retval VERR_ACCESS_DENIED if it isn't a kernel session. * @retval VERR_INVALID_PARAMETER on invalid parameter. * @retval VERR_INVALID_POINTER on invalid pointer parameter. * * @param pSession The SUPDRV session (must be a ring-0 session). * @param pFactory Pointer to the component factory registration structure. * * @remarks This interface is also available via SUPR0IdcComponentRegisterFactory. */ SUPR0DECL(int) SUPR0ComponentRegisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory) { PSUPDRVFACTORYREG pNewReg; const char *psz; int rc; /* * Validate parameters. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertReturn(pSession->R0Process == NIL_RTR0PROCESS, VERR_ACCESS_DENIED); AssertPtrReturn(pFactory, VERR_INVALID_POINTER); AssertPtrReturn(pFactory->pfnQueryFactoryInterface, VERR_INVALID_POINTER); psz = RTStrEnd(pFactory->szName, sizeof(pFactory->szName)); AssertReturn(psz, VERR_INVALID_PARAMETER); /* * Allocate and initialize a new registration structure. */ pNewReg = (PSUPDRVFACTORYREG)RTMemAlloc(sizeof(SUPDRVFACTORYREG)); if (pNewReg) { pNewReg->pNext = NULL; pNewReg->pFactory = pFactory; pNewReg->pSession = pSession; pNewReg->cchName = psz - &pFactory->szName[0]; /* * Add it to the tail of the list after checking for prior registration. */ rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory); if (RT_SUCCESS(rc)) { PSUPDRVFACTORYREG pPrev = NULL; PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead; while (pCur && pCur->pFactory != pFactory) { pPrev = pCur; pCur = pCur->pNext; } if (!pCur) { if (pPrev) pPrev->pNext = pNewReg; else pSession->pDevExt->pComponentFactoryHead = pNewReg; rc = VINF_SUCCESS; } else rc = VERR_ALREADY_EXISTS; RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory); } if (RT_FAILURE(rc)) RTMemFree(pNewReg); } else rc = VERR_NO_MEMORY; return rc; } /** * Deregister a component factory. * * @returns VBox status code. * @retval VINF_SUCCESS on success. * @retval VERR_NOT_FOUND if the factory wasn't registered. * @retval VERR_ACCESS_DENIED if it isn't a kernel session. * @retval VERR_INVALID_PARAMETER on invalid parameter. * @retval VERR_INVALID_POINTER on invalid pointer parameter. * * @param pSession The SUPDRV session (must be a ring-0 session). * @param pFactory Pointer to the component factory registration structure * previously passed SUPR0ComponentRegisterFactory(). * * @remarks This interface is also available via SUPR0IdcComponentDeregisterFactory. */ SUPR0DECL(int) SUPR0ComponentDeregisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory) { int rc; /* * Validate parameters. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertReturn(pSession->R0Process == NIL_RTR0PROCESS, VERR_ACCESS_DENIED); AssertPtrReturn(pFactory, VERR_INVALID_POINTER); /* * Take the lock and look for the registration record. */ rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory); if (RT_SUCCESS(rc)) { PSUPDRVFACTORYREG pPrev = NULL; PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead; while (pCur && pCur->pFactory != pFactory) { pPrev = pCur; pCur = pCur->pNext; } if (pCur) { if (!pPrev) pSession->pDevExt->pComponentFactoryHead = pCur->pNext; else pPrev->pNext = pCur->pNext; pCur->pNext = NULL; pCur->pFactory = NULL; pCur->pSession = NULL; rc = VINF_SUCCESS; } else rc = VERR_NOT_FOUND; RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory); RTMemFree(pCur); } return rc; } /** * Queries a component factory. * * @returns VBox status code. * @retval VERR_INVALID_PARAMETER on invalid parameter. * @retval VERR_INVALID_POINTER on invalid pointer parameter. * @retval VERR_SUPDRV_COMPONENT_NOT_FOUND if the component factory wasn't found. * @retval VERR_SUPDRV_INTERFACE_NOT_SUPPORTED if the interface wasn't supported. * * @param pSession The SUPDRV session. * @param pszName The name of the component factory. * @param pszInterfaceUuid The UUID of the factory interface (stringified). * @param ppvFactoryIf Where to store the factory interface. */ SUPR0DECL(int) SUPR0ComponentQueryFactory(PSUPDRVSESSION pSession, const char *pszName, const char *pszInterfaceUuid, void **ppvFactoryIf) { const char *pszEnd; size_t cchName; int rc; /* * Validate parameters. */ AssertReturn(SUP_IS_SESSION_VALID(pSession), VERR_INVALID_PARAMETER); AssertPtrReturn(pszName, VERR_INVALID_POINTER); pszEnd = RTStrEnd(pszName, RT_SIZEOFMEMB(SUPDRVFACTORY, szName)); AssertReturn(pszEnd, VERR_INVALID_PARAMETER); cchName = pszEnd - pszName; AssertPtrReturn(pszInterfaceUuid, VERR_INVALID_POINTER); pszEnd = RTStrEnd(pszInterfaceUuid, RTUUID_STR_LENGTH); AssertReturn(pszEnd, VERR_INVALID_PARAMETER); AssertPtrReturn(ppvFactoryIf, VERR_INVALID_POINTER); *ppvFactoryIf = NULL; /* * Take the lock and try all factories by this name. */ rc = RTSemFastMutexRequest(pSession->pDevExt->mtxComponentFactory); if (RT_SUCCESS(rc)) { PSUPDRVFACTORYREG pCur = pSession->pDevExt->pComponentFactoryHead; rc = VERR_SUPDRV_COMPONENT_NOT_FOUND; while (pCur) { if ( pCur->cchName == cchName && !memcmp(pCur->pFactory->szName, pszName, cchName)) { void *pvFactory = pCur->pFactory->pfnQueryFactoryInterface(pCur->pFactory, pSession, pszInterfaceUuid); if (pvFactory) { *ppvFactoryIf = pvFactory; rc = VINF_SUCCESS; break; } rc = VERR_SUPDRV_INTERFACE_NOT_SUPPORTED; } /* next */ pCur = pCur->pNext; } RTSemFastMutexRelease(pSession->pDevExt->mtxComponentFactory); } return rc; } /** * Adds a memory object to the session. * * @returns IPRT status code. * @param pMem Memory tracking structure containing the * information to track. * @param pSession The session. */ static int supdrvMemAdd(PSUPDRVMEMREF pMem, PSUPDRVSESSION pSession) { PSUPDRVBUNDLE pBundle; /* * Find free entry and record the allocation. */ RTSpinlockAcquire(pSession->Spinlock); for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext) { if (pBundle->cUsed < RT_ELEMENTS(pBundle->aMem)) { unsigned i; for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++) { if (pBundle->aMem[i].MemObj == NIL_RTR0MEMOBJ) { pBundle->cUsed++; pBundle->aMem[i] = *pMem; RTSpinlockRelease(pSession->Spinlock); return VINF_SUCCESS; } } AssertFailed(); /* !!this can't be happening!!! */ } } RTSpinlockRelease(pSession->Spinlock); /* * Need to allocate a new bundle. * Insert into the last entry in the bundle. */ pBundle = (PSUPDRVBUNDLE)RTMemAllocZ(sizeof(*pBundle)); if (!pBundle) return VERR_NO_MEMORY; /* take last entry. */ pBundle->cUsed++; pBundle->aMem[RT_ELEMENTS(pBundle->aMem) - 1] = *pMem; /* insert into list. */ RTSpinlockAcquire(pSession->Spinlock); pBundle->pNext = pSession->Bundle.pNext; pSession->Bundle.pNext = pBundle; RTSpinlockRelease(pSession->Spinlock); return VINF_SUCCESS; } /** * Releases a memory object referenced by pointer and type. * * @returns IPRT status code. * @param pSession Session data. * @param uPtr Pointer to memory. This is matched against both the R0 and R3 addresses. * @param eType Memory type. */ static int supdrvMemRelease(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, SUPDRVMEMREFTYPE eType) { PSUPDRVBUNDLE pBundle; /* * Validate input. */ if (!uPtr) { Log(("Illegal address %p\n", (void *)uPtr)); return VERR_INVALID_PARAMETER; } /* * Search for the address. */ RTSpinlockAcquire(pSession->Spinlock); for (pBundle = &pSession->Bundle; pBundle; pBundle = pBundle->pNext) { if (pBundle->cUsed > 0) { unsigned i; for (i = 0; i < RT_ELEMENTS(pBundle->aMem); i++) { if ( pBundle->aMem[i].eType == eType && pBundle->aMem[i].MemObj != NIL_RTR0MEMOBJ && ( (RTHCUINTPTR)RTR0MemObjAddress(pBundle->aMem[i].MemObj) == uPtr || ( pBundle->aMem[i].MapObjR3 != NIL_RTR0MEMOBJ && RTR0MemObjAddressR3(pBundle->aMem[i].MapObjR3) == uPtr)) ) { /* Make a copy of it and release it outside the spinlock. */ SUPDRVMEMREF Mem = pBundle->aMem[i]; pBundle->aMem[i].eType = MEMREF_TYPE_UNUSED; pBundle->aMem[i].MemObj = NIL_RTR0MEMOBJ; pBundle->aMem[i].MapObjR3 = NIL_RTR0MEMOBJ; RTSpinlockRelease(pSession->Spinlock); if (Mem.MapObjR3 != NIL_RTR0MEMOBJ) { int rc = RTR0MemObjFree(Mem.MapObjR3, false); AssertRC(rc); /** @todo figure out how to handle this. */ } if (Mem.MemObj != NIL_RTR0MEMOBJ) { int rc = RTR0MemObjFree(Mem.MemObj, true /* fFreeMappings */); AssertRC(rc); /** @todo figure out how to handle this. */ } return VINF_SUCCESS; } } } } RTSpinlockRelease(pSession->Spinlock); Log(("Failed to find %p!!! (eType=%d)\n", (void *)uPtr, eType)); return VERR_INVALID_PARAMETER; } /** * Opens an image. If it's the first time it's opened the call must upload * the bits using the supdrvIOCtl_LdrLoad() / SUPDRV_IOCTL_LDR_LOAD function. * * This is the 1st step of the loading. * * @returns IPRT status code. * @param pDevExt Device globals. * @param pSession Session data. * @param pReq The open request. */ static int supdrvIOCtl_LdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDROPEN pReq) { int rc; PSUPDRVLDRIMAGE pImage; void *pv; size_t cchName = strlen(pReq->u.In.szName); /* (caller checked < 32). */ SUPDRV_CHECK_SMAP_SETUP(); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); LogFlow(("supdrvIOCtl_LdrOpen: szName=%s cbImageWithTabs=%d\n", pReq->u.In.szName, pReq->u.In.cbImageWithTabs)); /* * Check if we got an instance of the image already. */ supdrvLdrLock(pDevExt); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); for (pImage = pDevExt->pLdrImages; pImage; pImage = pImage->pNext) { if ( pImage->szName[cchName] == '\0' && !memcmp(pImage->szName, pReq->u.In.szName, cchName)) { if (RT_LIKELY(pImage->cUsage < UINT32_MAX / 2U)) { /** @todo check cbImageBits and cbImageWithTabs here, if they differs that indicates that the images are different. */ pImage->cUsage++; pReq->u.Out.pvImageBase = pImage->pvImage; pReq->u.Out.fNeedsLoading = pImage->uState == SUP_IOCTL_LDR_OPEN; pReq->u.Out.fNativeLoader = pImage->fNative; supdrvLdrAddUsage(pSession, pImage); supdrvLdrUnlock(pDevExt); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); return VINF_SUCCESS; } supdrvLdrUnlock(pDevExt); Log(("supdrvIOCtl_LdrOpen: To many existing references to '%s'!\n", pReq->u.In.szName)); return VERR_INTERNAL_ERROR_3; /** @todo add VERR_TOO_MANY_REFERENCES */ } } /* (not found - add it!) */ /* If the loader interface is locked down, make userland fail early */ if (pDevExt->fLdrLockedDown) { supdrvLdrUnlock(pDevExt); Log(("supdrvIOCtl_LdrOpen: Not adding '%s' to image list, loader interface is locked down!\n", pReq->u.In.szName)); return VERR_PERMISSION_DENIED; } /* * Allocate memory. */ Assert(cchName < sizeof(pImage->szName)); pv = RTMemAlloc(sizeof(SUPDRVLDRIMAGE)); if (!pv) { supdrvLdrUnlock(pDevExt); Log(("supdrvIOCtl_LdrOpen: RTMemAlloc() failed\n")); return /*VERR_NO_MEMORY*/ VERR_INTERNAL_ERROR_2; } SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); /* * Setup and link in the LDR stuff. */ pImage = (PSUPDRVLDRIMAGE)pv; pImage->pvImage = NULL; pImage->pvImageAlloc = NULL; pImage->cbImageWithTabs = pReq->u.In.cbImageWithTabs; pImage->cbImageBits = pReq->u.In.cbImageBits; pImage->cSymbols = 0; pImage->paSymbols = NULL; pImage->pachStrTab = NULL; pImage->cbStrTab = 0; pImage->pfnModuleInit = NULL; pImage->pfnModuleTerm = NULL; pImage->pfnServiceReqHandler = NULL; pImage->uState = SUP_IOCTL_LDR_OPEN; pImage->cUsage = 1; pImage->pDevExt = pDevExt; memcpy(pImage->szName, pReq->u.In.szName, cchName + 1); /* * Try load it using the native loader, if that isn't supported, fall back * on the older method. */ pImage->fNative = true; rc = supdrvOSLdrOpen(pDevExt, pImage, pReq->u.In.szFilename); if (rc == VERR_NOT_SUPPORTED) { pImage->pvImageAlloc = RTMemExecAlloc(pImage->cbImageBits + 31); pImage->pvImage = RT_ALIGN_P(pImage->pvImageAlloc, 32); pImage->fNative = false; rc = pImage->pvImageAlloc ? VINF_SUCCESS : VERR_NO_EXEC_MEMORY; SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); } if (RT_FAILURE(rc)) { supdrvLdrUnlock(pDevExt); RTMemFree(pImage); Log(("supdrvIOCtl_LdrOpen(%s): failed - %Rrc\n", pReq->u.In.szName, rc)); return rc; } Assert(VALID_PTR(pImage->pvImage) || RT_FAILURE(rc)); /* * Link it. */ pImage->pNext = pDevExt->pLdrImages; pDevExt->pLdrImages = pImage; supdrvLdrAddUsage(pSession, pImage); pReq->u.Out.pvImageBase = pImage->pvImage; pReq->u.Out.fNeedsLoading = true; pReq->u.Out.fNativeLoader = pImage->fNative; supdrvOSLdrNotifyOpened(pDevExt, pImage, pReq->u.In.szFilename); supdrvLdrUnlock(pDevExt); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); return VINF_SUCCESS; } /** * Worker that validates a pointer to an image entrypoint. * * @returns IPRT status code. * @param pDevExt The device globals. * @param pImage The loader image. * @param pv The pointer into the image. * @param fMayBeNull Whether it may be NULL. * @param fCheckNative Whether to check with the native loaders. * @param pszSymbol The entrypoint name or log name. If the symbol * capitalized it signifies a specific symbol, otherwise it * for logging. * @param pbImageBits The image bits prepared by ring-3. * * @remarks Will leave the lock on failure. */ static int supdrvLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv, bool fMayBeNull, bool fCheckNative, const uint8_t *pbImageBits, const char *pszSymbol) { if (!fMayBeNull || pv) { if ((uintptr_t)pv - (uintptr_t)pImage->pvImage >= pImage->cbImageBits) { supdrvLdrUnlock(pDevExt); Log(("Out of range (%p LB %#x): %s=%p\n", pImage->pvImage, pImage->cbImageBits, pszSymbol, pv)); return VERR_INVALID_PARAMETER; } if (pImage->fNative && fCheckNative) { int rc = supdrvOSLdrValidatePointer(pDevExt, pImage, pv, pbImageBits, pszSymbol); if (RT_FAILURE(rc)) { supdrvLdrUnlock(pDevExt); Log(("Bad entry point address: %s=%p (rc=%Rrc)\n", pszSymbol, pv, rc)); return rc; } } } return VINF_SUCCESS; } /** * Formats a load error message. * * @returns @a rc * @param rc Return code. * @param pReq The request. * @param pszFormat The error message format string. * @param ... Argument to the format string. */ int VBOXCALL supdrvLdrLoadError(int rc, PSUPLDRLOAD pReq, const char *pszFormat, ...) { va_list va; va_start(va, pszFormat); pReq->u.Out.uErrorMagic = SUPLDRLOAD_ERROR_MAGIC; RTStrPrintfV(pReq->u.Out.szError, sizeof(pReq->u.Out.szError), pszFormat, va); va_end(va); Log(("SUP_IOCTL_LDR_LOAD: %s [rc=%Rrc]\n", pReq->u.Out.szError, rc)); return rc; } /** * Loads the image bits. * * This is the 2nd step of the loading. * * @returns IPRT status code. * @param pDevExt Device globals. * @param pSession Session data. * @param pReq The request. */ static int supdrvIOCtl_LdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRLOAD pReq) { PSUPDRVLDRUSAGE pUsage; PSUPDRVLDRIMAGE pImage; int rc; SUPDRV_CHECK_SMAP_SETUP(); LogFlow(("supdrvIOCtl_LdrLoad: pvImageBase=%p cbImageWithBits=%d\n", pReq->u.In.pvImageBase, pReq->u.In.cbImageWithTabs)); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); /* * Find the ldr image. */ supdrvLdrLock(pDevExt); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); pUsage = pSession->pLdrUsage; while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase) pUsage = pUsage->pNext; if (!pUsage) { supdrvLdrUnlock(pDevExt); return supdrvLdrLoadError(VERR_INVALID_HANDLE, pReq, "Image not found"); } pImage = pUsage->pImage; /* * Validate input. */ if ( pImage->cbImageWithTabs != pReq->u.In.cbImageWithTabs || pImage->cbImageBits != pReq->u.In.cbImageBits) { supdrvLdrUnlock(pDevExt); return supdrvLdrLoadError(VERR_INVALID_HANDLE, pReq, "Image size mismatch found: %d(prep) != %d(load) or %d != %d", pImage->cbImageWithTabs, pReq->u.In.cbImageWithTabs, pImage->cbImageBits, pReq->u.In.cbImageBits); } if (pImage->uState != SUP_IOCTL_LDR_OPEN) { unsigned uState = pImage->uState; supdrvLdrUnlock(pDevExt); if (uState != SUP_IOCTL_LDR_LOAD) AssertMsgFailed(("SUP_IOCTL_LDR_LOAD: invalid image state %d (%#x)!\n", uState, uState)); pReq->u.Out.uErrorMagic = 0; return VERR_ALREADY_LOADED; } /* If the loader interface is locked down, don't load new images */ if (pDevExt->fLdrLockedDown) { supdrvLdrUnlock(pDevExt); return supdrvLdrLoadError(VERR_PERMISSION_DENIED, pReq, "Loader is locked down"); } switch (pReq->u.In.eEPType) { case SUPLDRLOADEP_NOTHING: break; case SUPLDRLOADEP_VMMR0: rc = supdrvLdrValidatePointer( pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0, false, false, pReq->u.In.abImage, "pvVMMR0"); if (RT_SUCCESS(rc)) rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0EntryFast, false, true, pReq->u.In.abImage, "VMMR0EntryFast"); if (RT_SUCCESS(rc)) rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.VMMR0.pvVMMR0EntryEx, false, true, pReq->u.In.abImage, "VMMR0EntryEx"); if (RT_FAILURE(rc)) return supdrvLdrLoadError(rc, pReq, "Invalid VMMR0 pointer"); break; case SUPLDRLOADEP_SERVICE: rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.EP.Service.pfnServiceReq, false, true, pReq->u.In.abImage, "pfnServiceReq"); if (RT_FAILURE(rc)) return supdrvLdrLoadError(rc, pReq, "Invalid pfnServiceReq pointer: %p", pReq->u.In.EP.Service.pfnServiceReq); if ( pReq->u.In.EP.Service.apvReserved[0] != NIL_RTR0PTR || pReq->u.In.EP.Service.apvReserved[1] != NIL_RTR0PTR || pReq->u.In.EP.Service.apvReserved[2] != NIL_RTR0PTR) { supdrvLdrUnlock(pDevExt); return supdrvLdrLoadError(VERR_INVALID_PARAMETER, pReq, "Out of range (%p LB %#x): apvReserved={%p,%p,%p} MBZ!", pImage->pvImage, pReq->u.In.cbImageWithTabs, pReq->u.In.EP.Service.apvReserved[0], pReq->u.In.EP.Service.apvReserved[1], pReq->u.In.EP.Service.apvReserved[2]); } break; default: supdrvLdrUnlock(pDevExt); return supdrvLdrLoadError(VERR_INVALID_PARAMETER, pReq, "Invalid eEPType=%d", pReq->u.In.eEPType); } rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.pfnModuleInit, true, true, pReq->u.In.abImage, "ModuleInit"); if (RT_FAILURE(rc)) return supdrvLdrLoadError(rc, pReq, "Invalid pfnModuleInit pointer: %p", pReq->u.In.pfnModuleInit); rc = supdrvLdrValidatePointer(pDevExt, pImage, pReq->u.In.pfnModuleTerm, true, true, pReq->u.In.abImage, "ModuleTerm"); if (RT_FAILURE(rc)) return supdrvLdrLoadError(rc, pReq, "Invalid pfnModuleTerm pointer: %p", pReq->u.In.pfnModuleTerm); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); /* * Allocate and copy the tables if non-native. * (No need to do try/except as this is a buffered request.) */ if (!pImage->fNative) { pImage->cbStrTab = pReq->u.In.cbStrTab; if (pImage->cbStrTab) { pImage->pachStrTab = (char *)RTMemAlloc(pImage->cbStrTab); if (pImage->pachStrTab) memcpy(pImage->pachStrTab, &pReq->u.In.abImage[pReq->u.In.offStrTab], pImage->cbStrTab); else rc = supdrvLdrLoadError(VERR_NO_MEMORY, pReq, "Out of memory for string table: %#x", pImage->cbStrTab); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); } pImage->cSymbols = pReq->u.In.cSymbols; if (RT_SUCCESS(rc) && pImage->cSymbols) { size_t cbSymbols = pImage->cSymbols * sizeof(SUPLDRSYM); pImage->paSymbols = (PSUPLDRSYM)RTMemAlloc(cbSymbols); if (pImage->paSymbols) memcpy(pImage->paSymbols, &pReq->u.In.abImage[pReq->u.In.offSymbols], cbSymbols); else rc = supdrvLdrLoadError(VERR_NO_MEMORY, pReq, "Out of memory for symbol table: %#x", cbSymbols); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); } } /* * Copy the bits / complete native loading. */ if (RT_SUCCESS(rc)) { pImage->uState = SUP_IOCTL_LDR_LOAD; pImage->pfnModuleInit = (PFNR0MODULEINIT)(uintptr_t)pReq->u.In.pfnModuleInit; pImage->pfnModuleTerm = (PFNR0MODULETERM)(uintptr_t)pReq->u.In.pfnModuleTerm; if (pImage->fNative) rc = supdrvOSLdrLoad(pDevExt, pImage, pReq->u.In.abImage, pReq); else { memcpy(pImage->pvImage, &pReq->u.In.abImage[0], pImage->cbImageBits); Log(("vboxdrv: Loaded '%s' at %p\n", pImage->szName, pImage->pvImage)); } SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); } /* * Update any entry points. */ if (RT_SUCCESS(rc)) { switch (pReq->u.In.eEPType) { default: case SUPLDRLOADEP_NOTHING: rc = VINF_SUCCESS; break; case SUPLDRLOADEP_VMMR0: rc = supdrvLdrSetVMMR0EPs(pDevExt, pReq->u.In.EP.VMMR0.pvVMMR0, pReq->u.In.EP.VMMR0.pvVMMR0EntryFast, pReq->u.In.EP.VMMR0.pvVMMR0EntryEx); break; case SUPLDRLOADEP_SERVICE: pImage->pfnServiceReqHandler = (PFNSUPR0SERVICEREQHANDLER)(uintptr_t)pReq->u.In.EP.Service.pfnServiceReq; rc = VINF_SUCCESS; break; } } /* * On success call the module initialization. */ LogFlow(("supdrvIOCtl_LdrLoad: pfnModuleInit=%p\n", pImage->pfnModuleInit)); if (RT_SUCCESS(rc) && pImage->pfnModuleInit) { Log(("supdrvIOCtl_LdrLoad: calling pfnModuleInit=%p\n", pImage->pfnModuleInit)); pDevExt->pLdrInitImage = pImage; pDevExt->hLdrInitThread = RTThreadNativeSelf(); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); rc = pImage->pfnModuleInit(pImage); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); pDevExt->pLdrInitImage = NULL; pDevExt->hLdrInitThread = NIL_RTNATIVETHREAD; if (RT_FAILURE(rc)) { if (pDevExt->pvVMMR0 == pImage->pvImage) supdrvLdrUnsetVMMR0EPs(pDevExt); supdrvLdrLoadError(rc, pReq, "ModuleInit failed: %Rrc", rc); } } if (RT_SUCCESS(rc)) { SUPR0Printf("vboxdrv: %RKv %s\n", pImage->pvImage, pImage->szName); pReq->u.Out.uErrorMagic = 0; pReq->u.Out.szError[0] = '\0'; } else { /* Inform the tracing component in case ModuleInit registered TPs. */ supdrvTracerModuleUnloading(pDevExt, pImage); pImage->uState = SUP_IOCTL_LDR_OPEN; pImage->pfnModuleInit = NULL; pImage->pfnModuleTerm = NULL; pImage->pfnServiceReqHandler= NULL; pImage->cbStrTab = 0; RTMemFree(pImage->pachStrTab); pImage->pachStrTab = NULL; RTMemFree(pImage->paSymbols); pImage->paSymbols = NULL; pImage->cSymbols = 0; } supdrvLdrUnlock(pDevExt); SUPDRV_CHECK_SMAP_CHECK(pDevExt, RT_NOTHING); return rc; } /** * Frees a previously loaded (prep'ed) image. * * @returns IPRT status code. * @param pDevExt Device globals. * @param pSession Session data. * @param pReq The request. */ static int supdrvIOCtl_LdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRFREE pReq) { int rc; PSUPDRVLDRUSAGE pUsagePrev; PSUPDRVLDRUSAGE pUsage; PSUPDRVLDRIMAGE pImage; LogFlow(("supdrvIOCtl_LdrFree: pvImageBase=%p\n", pReq->u.In.pvImageBase)); /* * Find the ldr image. */ supdrvLdrLock(pDevExt); pUsagePrev = NULL; pUsage = pSession->pLdrUsage; while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase) { pUsagePrev = pUsage; pUsage = pUsage->pNext; } if (!pUsage) { supdrvLdrUnlock(pDevExt); Log(("SUP_IOCTL_LDR_FREE: couldn't find image!\n")); return VERR_INVALID_HANDLE; } /* * Check if we can remove anything. */ rc = VINF_SUCCESS; pImage = pUsage->pImage; if (pImage->cUsage <= 1 || pUsage->cUsage <= 1) { /* * Check if there are any objects with destructors in the image, if * so leave it for the session cleanup routine so we get a chance to * clean things up in the right order and not leave them all dangling. */ RTSpinlockAcquire(pDevExt->Spinlock); if (pImage->cUsage <= 1) { PSUPDRVOBJ pObj; for (pObj = pDevExt->pObjs; pObj; pObj = pObj->pNext) if (RT_UNLIKELY((uintptr_t)pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits)) { rc = VERR_DANGLING_OBJECTS; break; } } else { PSUPDRVUSAGE pGenUsage; for (pGenUsage = pSession->pUsage; pGenUsage; pGenUsage = pGenUsage->pNext) if (RT_UNLIKELY((uintptr_t)pGenUsage->pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits)) { rc = VERR_DANGLING_OBJECTS; break; } } RTSpinlockRelease(pDevExt->Spinlock); if (rc == VINF_SUCCESS) { /* unlink it */ if (pUsagePrev) pUsagePrev->pNext = pUsage->pNext; else pSession->pLdrUsage = pUsage->pNext; /* free it */ pUsage->pImage = NULL; pUsage->pNext = NULL; RTMemFree(pUsage); /* * Dereference the image. */ if (pImage->cUsage <= 1) supdrvLdrFree(pDevExt, pImage); else pImage->cUsage--; } else { Log(("supdrvIOCtl_LdrFree: Dangling objects in %p/%s!\n", pImage->pvImage, pImage->szName)); rc = VINF_SUCCESS; /** @todo BRANCH-2.1: remove this after branching. */ } } else { /* * Dereference both image and usage. */ pImage->cUsage--; pUsage->cUsage--; } supdrvLdrUnlock(pDevExt); return rc; } /** * Lock down the image loader interface. * * @returns IPRT status code. * @param pDevExt Device globals. */ static int supdrvIOCtl_LdrLockDown(PSUPDRVDEVEXT pDevExt) { LogFlow(("supdrvIOCtl_LdrLockDown:\n")); supdrvLdrLock(pDevExt); if (!pDevExt->fLdrLockedDown) { pDevExt->fLdrLockedDown = true; Log(("supdrvIOCtl_LdrLockDown: Image loader interface locked down\n")); } supdrvLdrUnlock(pDevExt); return VINF_SUCCESS; } /** * Queries the address of a symbol in an open image. * * @returns IPRT status code. * @param pDevExt Device globals. * @param pSession Session data. * @param pReq The request buffer. */ static int supdrvIOCtl_LdrQuerySymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPLDRGETSYMBOL pReq) { PSUPDRVLDRIMAGE pImage; PSUPDRVLDRUSAGE pUsage; uint32_t i; PSUPLDRSYM paSyms; const char *pchStrings; const size_t cbSymbol = strlen(pReq->u.In.szSymbol) + 1; void *pvSymbol = NULL; int rc = VERR_SYMBOL_NOT_FOUND; Log3(("supdrvIOCtl_LdrQuerySymbol: pvImageBase=%p szSymbol=\"%s\"\n", pReq->u.In.pvImageBase, pReq->u.In.szSymbol)); /* * Find the ldr image. */ supdrvLdrLock(pDevExt); pUsage = pSession->pLdrUsage; while (pUsage && pUsage->pImage->pvImage != pReq->u.In.pvImageBase) pUsage = pUsage->pNext; if (!pUsage) { supdrvLdrUnlock(pDevExt); Log(("SUP_IOCTL_LDR_GET_SYMBOL: couldn't find image!\n")); return VERR_INVALID_HANDLE; } pImage = pUsage->pImage; if (pImage->uState != SUP_IOCTL_LDR_LOAD) { unsigned uState = pImage->uState; supdrvLdrUnlock(pDevExt); Log(("SUP_IOCTL_LDR_GET_SYMBOL: invalid image state %d (%#x)!\n", uState, uState)); NOREF(uState); return VERR_ALREADY_LOADED; } /* * Search the image exports / symbol strings. * * Note! The int32_t is for native loading on solaris where the data * and text segments are in very different places. */ if (pImage->fNative) rc = supdrvOSLdrQuerySymbol(pDevExt, pImage, pReq->u.In.szSymbol, cbSymbol - 1, &pvSymbol); else { pchStrings = pImage->pachStrTab; paSyms = pImage->paSymbols; for (i = 0; i < pImage->cSymbols; i++) { if ( paSyms[i].offName + cbSymbol <= pImage->cbStrTab && !memcmp(pchStrings + paSyms[i].offName, pReq->u.In.szSymbol, cbSymbol)) { pvSymbol = (uint8_t *)pImage->pvImage + (int32_t)paSyms[i].offSymbol; rc = VINF_SUCCESS; break; } } } supdrvLdrUnlock(pDevExt); pReq->u.Out.pvSymbol = pvSymbol; return rc; } /** * Gets the address of a symbol in an open image or the support driver. * * @returns VINF_SUCCESS on success. * @returns * @param pDevExt Device globals. * @param pSession Session data. * @param pReq The request buffer. */ static int supdrvIDC_LdrGetSymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPDRVIDCREQGETSYM pReq) { int rc = VINF_SUCCESS; const char *pszSymbol = pReq->u.In.pszSymbol; const char *pszModule = pReq->u.In.pszModule; size_t cbSymbol; char const *pszEnd; uint32_t i; /* * Input validation. */ AssertPtrReturn(pszSymbol, VERR_INVALID_POINTER); pszEnd = RTStrEnd(pszSymbol, 512); AssertReturn(pszEnd, VERR_INVALID_PARAMETER); cbSymbol = pszEnd - pszSymbol + 1; if (pszModule) { AssertPtrReturn(pszModule, VERR_INVALID_POINTER); pszEnd = RTStrEnd(pszModule, 64); AssertReturn(pszEnd, VERR_INVALID_PARAMETER); } Log3(("supdrvIDC_LdrGetSymbol: pszModule=%p:{%s} pszSymbol=%p:{%s}\n", pszModule, pszModule, pszSymbol, pszSymbol)); if ( !pszModule || !strcmp(pszModule, "SupDrv")) { /* * Search the support driver export table. */ for (i = 0; i < RT_ELEMENTS(g_aFunctions); i++) if (!strcmp(g_aFunctions[i].szName, pszSymbol)) { pReq->u.Out.pfnSymbol = (PFNRT)(uintptr_t)g_aFunctions[i].pfn; break; } } else { /* * Find the loader image. */ PSUPDRVLDRIMAGE pImage; supdrvLdrLock(pDevExt); for (pImage = pDevExt->pLdrImages; pImage; pImage = pImage->pNext) if (!strcmp(pImage->szName, pszModule)) break; if (pImage && pImage->uState == SUP_IOCTL_LDR_LOAD) { /* * Search the image exports / symbol strings. */ if (pImage->fNative) { rc = supdrvOSLdrQuerySymbol(pDevExt, pImage, pszSymbol, cbSymbol - 1, (void **)&pReq->u.Out.pfnSymbol); if (RT_SUCCESS(rc)) rc = supdrvLdrAddUsage(pSession, pImage); } else { const char *pchStrings = pImage->pachStrTab; PCSUPLDRSYM paSyms = pImage->paSymbols; rc = VERR_SYMBOL_NOT_FOUND; for (i = 0; i < pImage->cSymbols; i++) { if ( paSyms[i].offName + cbSymbol <= pImage->cbStrTab && !memcmp(pchStrings + paSyms[i].offName, pszSymbol, cbSymbol)) { /* * Found it! Calc the symbol address and add a reference to the module. */ pReq->u.Out.pfnSymbol = (PFNRT)((uintptr_t)pImage->pvImage + (int32_t)paSyms[i].offSymbol); rc = supdrvLdrAddUsage(pSession, pImage); break; } } } } else rc = pImage ? VERR_WRONG_ORDER : VERR_MODULE_NOT_FOUND; supdrvLdrUnlock(pDevExt); } return rc; } /** * Looks up a symbol in g_aFunctions * * @returns VINF_SUCCESS on success, VERR_SYMBOL_NOT_FOUND on failure. * @param pszSymbol The symbol to look up. * @param puValue Where to return the value. */ int VBOXCALL supdrvLdrGetExportedSymbol(const char *pszSymbol, uintptr_t *puValue) { uint32_t i; for (i = 0; i < RT_ELEMENTS(g_aFunctions); i++) if (!strcmp(g_aFunctions[i].szName, pszSymbol)) { *puValue = (uintptr_t)g_aFunctions[i].pfn; return VINF_SUCCESS; } if (!strcmp(pszSymbol, "g_SUPGlobalInfoPage")) { *puValue = (uintptr_t)g_pSUPGlobalInfoPage; return VINF_SUCCESS; } return VERR_SYMBOL_NOT_FOUND; } /** * Updates the VMMR0 entry point pointers. * * @returns IPRT status code. * @param pDevExt Device globals. * @param pvVMMR0 VMMR0 image handle. * @param pvVMMR0EntryFast VMMR0EntryFast address. * @param pvVMMR0EntryEx VMMR0EntryEx address. * @remark Caller must own the loader mutex. */ static int supdrvLdrSetVMMR0EPs(PSUPDRVDEVEXT pDevExt, void *pvVMMR0, void *pvVMMR0EntryFast, void *pvVMMR0EntryEx) { int rc = VINF_SUCCESS; LogFlow(("supdrvLdrSetR0EP pvVMMR0=%p pvVMMR0EntryFast=%p\n", pvVMMR0, pvVMMR0EntryFast)); /* * Check if not yet set. */ if (!pDevExt->pvVMMR0) { pDevExt->pvVMMR0 = pvVMMR0; *(void **)&pDevExt->pfnVMMR0EntryFast = pvVMMR0EntryFast; *(void **)&pDevExt->pfnVMMR0EntryEx = pvVMMR0EntryEx; ASMCompilerBarrier(); /* the above isn't nice, so be careful... */ } else { /* * Return failure or success depending on whether the values match or not. */ if ( pDevExt->pvVMMR0 != pvVMMR0 || (uintptr_t)pDevExt->pfnVMMR0EntryFast != (uintptr_t)pvVMMR0EntryFast || (uintptr_t)pDevExt->pfnVMMR0EntryEx != (uintptr_t)pvVMMR0EntryEx) { AssertMsgFailed(("SUP_IOCTL_LDR_SETR0EP: Already set pointing to a different module!\n")); rc = VERR_INVALID_PARAMETER; } } return rc; } /** * Unsets the VMMR0 entry point installed by supdrvLdrSetR0EP. * * @param pDevExt Device globals. */ static void supdrvLdrUnsetVMMR0EPs(PSUPDRVDEVEXT pDevExt) { pDevExt->pvVMMR0 = NULL; pDevExt->pfnVMMR0EntryFast = NULL; pDevExt->pfnVMMR0EntryEx = NULL; } /** * Adds a usage reference in the specified session of an image. * * Called while owning the loader semaphore. * * @returns VINF_SUCCESS on success and VERR_NO_MEMORY on failure. * @param pSession Session in question. * @param pImage Image which the session is using. */ static int supdrvLdrAddUsage(PSUPDRVSESSION pSession, PSUPDRVLDRIMAGE pImage) { PSUPDRVLDRUSAGE pUsage; LogFlow(("supdrvLdrAddUsage: pImage=%p\n", pImage)); /* * Referenced it already? */ pUsage = pSession->pLdrUsage; while (pUsage) { if (pUsage->pImage == pImage) { pUsage->cUsage++; return VINF_SUCCESS; } pUsage = pUsage->pNext; } /* * Allocate new usage record. */ pUsage = (PSUPDRVLDRUSAGE)RTMemAlloc(sizeof(*pUsage)); AssertReturn(pUsage, /*VERR_NO_MEMORY*/ VERR_INTERNAL_ERROR_5); pUsage->cUsage = 1; pUsage->pImage = pImage; pUsage->pNext = pSession->pLdrUsage; pSession->pLdrUsage = pUsage; return VINF_SUCCESS; } /** * Frees a load image. * * @param pDevExt Pointer to device extension. * @param pImage Pointer to the image we're gonna free. * This image must exit! * @remark The caller MUST own SUPDRVDEVEXT::mtxLdr! */ static void supdrvLdrFree(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage) { PSUPDRVLDRIMAGE pImagePrev; LogFlow(("supdrvLdrFree: pImage=%p\n", pImage)); /* * Warn if we're releasing images while the image loader interface is * locked down -- we won't be able to reload them! */ if (pDevExt->fLdrLockedDown) Log(("supdrvLdrFree: Warning: unloading '%s' image, while loader interface is locked down!\n", pImage->szName)); /* find it - arg. should've used doubly linked list. */ Assert(pDevExt->pLdrImages); pImagePrev = NULL; if (pDevExt->pLdrImages != pImage) { pImagePrev = pDevExt->pLdrImages; while (pImagePrev->pNext != pImage) pImagePrev = pImagePrev->pNext; Assert(pImagePrev->pNext == pImage); } /* unlink */ if (pImagePrev) pImagePrev->pNext = pImage->pNext; else pDevExt->pLdrImages = pImage->pNext; /* check if this is VMMR0.r0 unset its entry point pointers. */ if (pDevExt->pvVMMR0 == pImage->pvImage) supdrvLdrUnsetVMMR0EPs(pDevExt); /* check for objects with destructors in this image. (Shouldn't happen.) */ if (pDevExt->pObjs) { unsigned cObjs = 0; PSUPDRVOBJ pObj; RTSpinlockAcquire(pDevExt->Spinlock); for (pObj = pDevExt->pObjs; pObj; pObj = pObj->pNext) if (RT_UNLIKELY((uintptr_t)pObj->pfnDestructor - (uintptr_t)pImage->pvImage < pImage->cbImageBits)) { pObj->pfnDestructor = NULL; cObjs++; } RTSpinlockRelease(pDevExt->Spinlock); if (cObjs) OSDBGPRINT(("supdrvLdrFree: Image '%s' has %d dangling objects!\n", pImage->szName, cObjs)); } /* call termination function if fully loaded. */ if ( pImage->pfnModuleTerm && pImage->uState == SUP_IOCTL_LDR_LOAD) { LogFlow(("supdrvIOCtl_LdrLoad: calling pfnModuleTerm=%p\n", pImage->pfnModuleTerm)); pImage->pfnModuleTerm(pImage); } /* Inform the tracing component. */ supdrvTracerModuleUnloading(pDevExt, pImage); /* Do native unload if appropriate, then inform the native code about the unloading (mainly for non-native loading case). */ if (pImage->fNative) supdrvOSLdrUnload(pDevExt, pImage); supdrvOSLdrNotifyUnloaded(pDevExt, pImage); /* free the image */ pImage->cUsage = 0; pImage->pDevExt = NULL; pImage->pNext = NULL; pImage->uState = SUP_IOCTL_LDR_FREE; RTMemExecFree(pImage->pvImageAlloc, pImage->cbImageBits + 31); pImage->pvImageAlloc = NULL; RTMemFree(pImage->pachStrTab); pImage->pachStrTab = NULL; RTMemFree(pImage->paSymbols); pImage->paSymbols = NULL; RTMemFree(pImage); } /** * Acquires the loader lock. * * @returns IPRT status code. * @param pDevExt The device extension. */ DECLINLINE(int) supdrvLdrLock(PSUPDRVDEVEXT pDevExt) { #ifdef SUPDRV_USE_MUTEX_FOR_LDR int rc = RTSemMutexRequest(pDevExt->mtxLdr, RT_INDEFINITE_WAIT); #else int rc = RTSemFastMutexRequest(pDevExt->mtxLdr); #endif AssertRC(rc); return rc; } /** * Releases the loader lock. * * @returns IPRT status code. * @param pDevExt The device extension. */ DECLINLINE(int) supdrvLdrUnlock(PSUPDRVDEVEXT pDevExt) { #ifdef SUPDRV_USE_MUTEX_FOR_LDR return RTSemMutexRelease(pDevExt->mtxLdr); #else return RTSemFastMutexRelease(pDevExt->mtxLdr); #endif } /** * Implements the service call request. * * @returns VBox status code. * @param pDevExt The device extension. * @param pSession The calling session. * @param pReq The request packet, valid. */ static int supdrvIOCtl_CallServiceModule(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, PSUPCALLSERVICE pReq) { #if !defined(RT_OS_WINDOWS) || defined(RT_ARCH_AMD64) || defined(DEBUG) int rc; /* * Find the module first in the module referenced by the calling session. */ rc = supdrvLdrLock(pDevExt); if (RT_SUCCESS(rc)) { PFNSUPR0SERVICEREQHANDLER pfnServiceReqHandler = NULL; PSUPDRVLDRUSAGE pUsage; for (pUsage = pSession->pLdrUsage; pUsage; pUsage = pUsage->pNext) if ( pUsage->pImage->pfnServiceReqHandler && !strcmp(pUsage->pImage->szName, pReq->u.In.szName)) { pfnServiceReqHandler = pUsage->pImage->pfnServiceReqHandler; break; } supdrvLdrUnlock(pDevExt); if (pfnServiceReqHandler) { /* * Call it. */ if (pReq->Hdr.cbIn == SUP_IOCTL_CALL_SERVICE_SIZE(0)) rc = pfnServiceReqHandler(pSession, pReq->u.In.uOperation, pReq->u.In.u64Arg, NULL); else rc = pfnServiceReqHandler(pSession, pReq->u.In.uOperation, pReq->u.In.u64Arg, (PSUPR0SERVICEREQHDR)&pReq->abReqPkt[0]); } else rc = VERR_SUPDRV_SERVICE_NOT_FOUND; } /* log it */ if ( RT_FAILURE(rc) && rc != VERR_INTERRUPTED && rc != VERR_TIMEOUT) Log(("SUP_IOCTL_CALL_SERVICE: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); else Log4(("SUP_IOCTL_CALL_SERVICE: rc=%Rrc op=%u out=%u arg=%RX64 p/t=%RTproc/%RTthrd\n", rc, pReq->u.In.uOperation, pReq->Hdr.cbOut, pReq->u.In.u64Arg, RTProcSelf(), RTThreadNativeSelf())); return rc; #else /* RT_OS_WINDOWS && !RT_ARCH_AMD64 && !DEBUG */ RT_NOREF3(pDevExt, pSession, pReq); return VERR_NOT_IMPLEMENTED; #endif /* RT_OS_WINDOWS && !RT_ARCH_AMD64 && !DEBUG */ } /** * Implements the logger settings request. * * @returns VBox status code. * @param pReq The request. */ static int supdrvIOCtl_LoggerSettings(PSUPLOGGERSETTINGS pReq) { const char *pszGroup = &pReq->u.In.szStrings[pReq->u.In.offGroups]; const char *pszFlags = &pReq->u.In.szStrings[pReq->u.In.offFlags]; const char *pszDest = &pReq->u.In.szStrings[pReq->u.In.offDestination]; PRTLOGGER pLogger = NULL; int rc; /* * Some further validation. */ switch (pReq->u.In.fWhat) { case SUPLOGGERSETTINGS_WHAT_SETTINGS: case SUPLOGGERSETTINGS_WHAT_CREATE: break; case SUPLOGGERSETTINGS_WHAT_DESTROY: if (*pszGroup || *pszFlags || *pszDest) return VERR_INVALID_PARAMETER; if (pReq->u.In.fWhich == SUPLOGGERSETTINGS_WHICH_RELEASE) return VERR_ACCESS_DENIED; break; default: return VERR_INTERNAL_ERROR; } /* * Get the logger. */ switch (pReq->u.In.fWhich) { case SUPLOGGERSETTINGS_WHICH_DEBUG: pLogger = RTLogGetDefaultInstance(); break; case SUPLOGGERSETTINGS_WHICH_RELEASE: pLogger = RTLogRelGetDefaultInstance(); break; default: return VERR_INTERNAL_ERROR; } /* * Do the job. */ switch (pReq->u.In.fWhat) { case SUPLOGGERSETTINGS_WHAT_SETTINGS: if (pLogger) { rc = RTLogFlags(pLogger, pszFlags); if (RT_SUCCESS(rc)) rc = RTLogGroupSettings(pLogger, pszGroup); NOREF(pszDest); } else rc = VERR_NOT_FOUND; break; case SUPLOGGERSETTINGS_WHAT_CREATE: { if (pLogger) rc = VERR_ALREADY_EXISTS; else { static const char * const s_apszGroups[] = VBOX_LOGGROUP_NAMES; rc = RTLogCreate(&pLogger, 0 /* fFlags */, pszGroup, pReq->u.In.fWhich == SUPLOGGERSETTINGS_WHICH_DEBUG ? "VBOX_LOG" : "VBOX_RELEASE_LOG", RT_ELEMENTS(s_apszGroups), s_apszGroups, RTLOGDEST_STDOUT | RTLOGDEST_DEBUGGER, NULL); if (RT_SUCCESS(rc)) { rc = RTLogFlags(pLogger, pszFlags); NOREF(pszDest); if (RT_SUCCESS(rc)) { switch (pReq->u.In.fWhich) { case SUPLOGGERSETTINGS_WHICH_DEBUG: pLogger = RTLogSetDefaultInstance(pLogger); break; case SUPLOGGERSETTINGS_WHICH_RELEASE: pLogger = RTLogRelSetDefaultInstance(pLogger); break; } } RTLogDestroy(pLogger); } } break; } case SUPLOGGERSETTINGS_WHAT_DESTROY: switch (pReq->u.In.fWhich) { case SUPLOGGERSETTINGS_WHICH_DEBUG: pLogger = RTLogSetDefaultInstance(NULL); break; case SUPLOGGERSETTINGS_WHICH_RELEASE: pLogger = RTLogRelSetDefaultInstance(NULL); break; } rc = RTLogDestroy(pLogger); break; default: { rc = VERR_INTERNAL_ERROR; break; } } return rc; } /** * Implements the MSR prober operations. * * @returns VBox status code. * @param pDevExt The device extension. * @param pReq The request. */ static int supdrvIOCtl_MsrProber(PSUPDRVDEVEXT pDevExt, PSUPMSRPROBER pReq) { #ifdef SUPDRV_WITH_MSR_PROBER RTCPUID const idCpu = pReq->u.In.idCpu == UINT32_MAX ? NIL_RTCPUID : pReq->u.In.idCpu; int rc; switch (pReq->u.In.enmOp) { case SUPMSRPROBEROP_READ: { uint64_t uValue; rc = supdrvOSMsrProberRead(pReq->u.In.uMsr, idCpu, &uValue); if (RT_SUCCESS(rc)) { pReq->u.Out.uResults.Read.uValue = uValue; pReq->u.Out.uResults.Read.fGp = false; } else if (rc == VERR_ACCESS_DENIED) { pReq->u.Out.uResults.Read.uValue = 0; pReq->u.Out.uResults.Read.fGp = true; rc = VINF_SUCCESS; } break; } case SUPMSRPROBEROP_WRITE: rc = supdrvOSMsrProberWrite(pReq->u.In.uMsr, idCpu, pReq->u.In.uArgs.Write.uToWrite); if (RT_SUCCESS(rc)) pReq->u.Out.uResults.Write.fGp = false; else if (rc == VERR_ACCESS_DENIED) { pReq->u.Out.uResults.Write.fGp = true; rc = VINF_SUCCESS; } break; case SUPMSRPROBEROP_MODIFY: case SUPMSRPROBEROP_MODIFY_FASTER: rc = supdrvOSMsrProberModify(idCpu, pReq); break; default: return VERR_INVALID_FUNCTION; } RT_NOREF1(pDevExt); return rc; #else RT_NOREF2(pDevExt, pReq); return VERR_NOT_IMPLEMENTED; #endif } /** * Resume built-in keyboard on MacBook Air and Pro hosts. * If there is no built-in keyboard device, return success anyway. * * @returns 0 on Mac OS X platform, VERR_NOT_IMPLEMENTED on the other ones. */ static int supdrvIOCtl_ResumeSuspendedKbds(void) { #if defined(RT_OS_DARWIN) return supdrvDarwinResumeSuspendedKbds(); #else return VERR_NOT_IMPLEMENTED; #endif }