diff options
Diffstat (limited to 'src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibHGCMInternal.cpp')
| -rw-r--r-- | src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibHGCMInternal.cpp | 1175 |
1 files changed, 1175 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibHGCMInternal.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibHGCMInternal.cpp new file mode 100644 index 00000000..a21b9f98 --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibHGCMInternal.cpp @@ -0,0 +1,1175 @@ +/* $Id: VBoxGuestR0LibHGCMInternal.cpp $ */ +/** @file + * VBoxGuestLib - Host-Guest Communication Manager internal functions, implemented by VBoxGuest + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_HGCM + +#include "VBoxGuestR0LibInternal.h" +#include <iprt/asm.h> +#include <iprt/assert.h> +#include <iprt/mem.h> +#include <iprt/memobj.h> +#include <iprt/string.h> +#include <iprt/thread.h> +#include <iprt/time.h> +#include <VBox/err.h> + +#ifndef VBGL_VBOXGUEST +# error "This file should only be part of the VBoxGuestR0LibBase library that is linked into VBoxGuest." +#endif + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** The max parameter buffer size for a user request. */ +#define VBGLR0_MAX_HGCM_USER_PARM (24*_1M) +/** The max parameter buffer size for a kernel request. */ +#define VBGLR0_MAX_HGCM_KERNEL_PARM (16*_1M) +/** The max embedded buffer size. */ +#define VBGLR0_MAX_HGCM_EMBEDDED_BUFFER _64K + +#if defined(RT_OS_LINUX) || defined(RT_OS_DARWIN) +/** Linux needs to use bounce buffers since RTR0MemObjLockUser has unwanted + * side effects. + * Darwin 32bit & 64bit also needs this because of 4GB/4GB user/kernel space. */ +# define USE_BOUNCE_BUFFERS +#endif + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +/** + * Lock info structure used by VbglR0HGCMInternalCall and its helpers. + */ +struct VbglR0ParmInfo +{ + uint32_t cLockBufs; + struct + { + uint32_t iParm; + RTR0MEMOBJ hObj; +#ifdef USE_BOUNCE_BUFFERS + void *pvSmallBuf; +#endif + } aLockBufs[10]; +}; + + + +/* These functions can be only used by VBoxGuest. */ + +DECLR0VBGL(int) VbglR0HGCMInternalConnect(HGCMServiceLocation const *pLoc, uint32_t fRequestor, HGCMCLIENTID *pidClient, + PFNVBGLHGCMCALLBACK pfnAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData) +{ + int rc; + if ( RT_VALID_PTR(pLoc) + && RT_VALID_PTR(pidClient) + && RT_VALID_PTR(pfnAsyncCallback)) + { + /* Allocate request */ + VMMDevHGCMConnect *pHGCMConnect = NULL; + rc = VbglR0GRAlloc((VMMDevRequestHeader **)&pHGCMConnect, sizeof(VMMDevHGCMConnect), VMMDevReq_HGCMConnect); + if (RT_SUCCESS(rc)) + { + /* Initialize request memory */ + pHGCMConnect->header.header.fRequestor = fRequestor; + + pHGCMConnect->header.fu32Flags = 0; + + memcpy(&pHGCMConnect->loc, pLoc, sizeof(pHGCMConnect->loc)); + pHGCMConnect->u32ClientID = 0; + + /* Issue request */ + rc = VbglR0GRPerform (&pHGCMConnect->header.header); + if (RT_SUCCESS(rc)) + { + /* Check if host decides to process the request asynchronously. */ + if (rc == VINF_HGCM_ASYNC_EXECUTE) + { + /* Wait for request completion interrupt notification from host */ + pfnAsyncCallback(&pHGCMConnect->header, pvAsyncData, u32AsyncData); + } + + rc = pHGCMConnect->header.result; + if (RT_SUCCESS(rc)) + *pidClient = pHGCMConnect->u32ClientID; + } + VbglR0GRFree(&pHGCMConnect->header.header); + } + } + else + rc = VERR_INVALID_PARAMETER; + return rc; +} + + +DECLR0VBGL(int) VbglR0HGCMInternalDisconnect(HGCMCLIENTID idClient, uint32_t fRequestor, + PFNVBGLHGCMCALLBACK pfnAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData) +{ + int rc; + if ( idClient != 0 + && pfnAsyncCallback) + { + /* Allocate request */ + VMMDevHGCMDisconnect *pHGCMDisconnect = NULL; + rc = VbglR0GRAlloc ((VMMDevRequestHeader **)&pHGCMDisconnect, sizeof (VMMDevHGCMDisconnect), VMMDevReq_HGCMDisconnect); + if (RT_SUCCESS(rc)) + { + /* Initialize request memory */ + pHGCMDisconnect->header.header.fRequestor = fRequestor; + + pHGCMDisconnect->header.fu32Flags = 0; + + pHGCMDisconnect->u32ClientID = idClient; + + /* Issue request */ + rc = VbglR0GRPerform(&pHGCMDisconnect->header.header); + if (RT_SUCCESS(rc)) + { + /* Check if host decides to process the request asynchronously. */ + if (rc == VINF_HGCM_ASYNC_EXECUTE) + { + /* Wait for request completion interrupt notification from host */ + pfnAsyncCallback(&pHGCMDisconnect->header, pvAsyncData, u32AsyncData); + } + + rc = pHGCMDisconnect->header.result; + } + + VbglR0GRFree(&pHGCMDisconnect->header.header); + } + } + else + rc = VERR_INVALID_PARAMETER; + return rc; +} + + +/** + * Preprocesses the HGCM call, validating and locking/buffering parameters. + * + * @returns VBox status code. + * + * @param pCallInfo The call info. + * @param cbCallInfo The size of the call info structure. + * @param fIsUser Is it a user request or kernel request. + * @param pcbExtra Where to return the extra request space needed for + * physical page lists. + */ +static int vbglR0HGCMInternalPreprocessCall(PCVBGLIOCHGCMCALL pCallInfo, uint32_t cbCallInfo, + bool fIsUser, struct VbglR0ParmInfo *pParmInfo, size_t *pcbExtra) +{ + HGCMFunctionParameter const *pSrcParm = VBGL_HGCM_GET_CALL_PARMS(pCallInfo); + uint32_t const cParms = pCallInfo->cParms; + uint32_t iParm; + uint32_t cb; + + /* + * Lock down the any linear buffers so we can get their addresses + * and figure out how much extra storage we need for page lists. + * + * Note! With kernel mode users we can be assertive. For user mode users + * we should just (debug) log it and fail without any fanfare. + */ + *pcbExtra = 0; + pParmInfo->cLockBufs = 0; + for (iParm = 0; iParm < cParms; iParm++, pSrcParm++) + { + switch (pSrcParm->type) + { + case VMMDevHGCMParmType_32bit: + Log4(("GstHGCMCall: parm=%u type=32bit: %#010x\n", iParm, pSrcParm->u.value32)); + break; + + case VMMDevHGCMParmType_64bit: + Log4(("GstHGCMCall: parm=%u type=64bit: %#018RX64\n", iParm, pSrcParm->u.value64)); + break; + + case VMMDevHGCMParmType_PageList: + case VMMDevHGCMParmType_ContiguousPageList: + if (fIsUser) + return VERR_INVALID_PARAMETER; + cb = pSrcParm->u.PageList.size; + if (cb) + { + uint32_t off = pSrcParm->u.PageList.offset; + HGCMPageListInfo *pPgLst; + uint32_t cPages; + uint32_t u32; + + AssertMsgReturn(cb <= VBGLR0_MAX_HGCM_KERNEL_PARM, ("%#x > %#x\n", cb, VBGLR0_MAX_HGCM_KERNEL_PARM), + VERR_OUT_OF_RANGE); + AssertMsgReturn( off >= cParms * sizeof(HGCMFunctionParameter) + && off <= cbCallInfo - sizeof(HGCMPageListInfo), + ("offset=%#x cParms=%#x cbCallInfo=%#x\n", off, cParms, cbCallInfo), + VERR_INVALID_PARAMETER); + + pPgLst = (HGCMPageListInfo *)((uint8_t *)pCallInfo + off); + cPages = pPgLst->cPages; + u32 = RT_UOFFSETOF_DYN(HGCMPageListInfo, aPages[cPages]) + off; + AssertMsgReturn(u32 <= cbCallInfo, + ("u32=%#x (cPages=%#x offset=%#x) cbCallInfo=%#x\n", u32, cPages, off, cbCallInfo), + VERR_INVALID_PARAMETER); + AssertMsgReturn(pPgLst->offFirstPage < PAGE_SIZE, ("#x\n", pPgLst->offFirstPage), VERR_INVALID_PARAMETER); + u32 = RT_ALIGN_32(pPgLst->offFirstPage + cb, PAGE_SIZE) >> PAGE_SHIFT; + AssertMsgReturn(cPages == u32, ("cPages=%#x u32=%#x\n", cPages, u32), VERR_INVALID_PARAMETER); + AssertMsgReturn(VBOX_HGCM_F_PARM_ARE_VALID(pPgLst->flags), ("%#x\n", pPgLst->flags), VERR_INVALID_PARAMETER); + Log4(("GstHGCMCall: parm=%u type=pglst: cb=%#010x cPgs=%u offPg0=%#x flags=%#x\n", + iParm, cb, cPages, pPgLst->offFirstPage, pPgLst->flags)); + u32 = cPages; + while (u32-- > 0) + { + Log4(("GstHGCMCall: pg#%u=%RHp\n", u32, pPgLst->aPages[u32])); + AssertMsgReturn(!(pPgLst->aPages[u32] & (PAGE_OFFSET_MASK | UINT64_C(0xfff0000000000000))), + ("pg#%u=%RHp\n", u32, pPgLst->aPages[u32]), + VERR_INVALID_PARAMETER); + } + + *pcbExtra += RT_UOFFSETOF_DYN(HGCMPageListInfo, aPages[pPgLst->cPages]); + } + else + Log4(("GstHGCMCall: parm=%u type=pglst: cb=0\n", iParm)); + break; + + case VMMDevHGCMParmType_Embedded: + if (fIsUser) /// @todo relax this. + return VERR_INVALID_PARAMETER; + cb = pSrcParm->u.Embedded.cbData; + if (cb) + { + uint32_t off = pSrcParm->u.Embedded.offData; + AssertMsgReturn(cb <= VBGLR0_MAX_HGCM_EMBEDDED_BUFFER, ("%#x > %#x\n", cb, VBGLR0_MAX_HGCM_EMBEDDED_BUFFER), + VERR_INVALID_PARAMETER); + AssertMsgReturn(cb <= cbCallInfo - cParms * sizeof(HGCMFunctionParameter), + ("cb=%#x cParms=%#x cbCallInfo=%3x\n", cb, cParms, cbCallInfo), + VERR_INVALID_PARAMETER); + AssertMsgReturn( off >= cParms * sizeof(HGCMFunctionParameter) + && off <= cbCallInfo - cb, + ("offData=%#x cParms=%#x cbCallInfo=%#x\n", off, cParms, cbCallInfo), + VERR_INVALID_PARAMETER); + AssertMsgReturn(VBOX_HGCM_F_PARM_ARE_VALID(pSrcParm->u.Embedded.fFlags), + ("%#x\n", pSrcParm->u.Embedded.fFlags), VERR_INVALID_PARAMETER); + + *pcbExtra += RT_ALIGN_32(cb, 8); + } + else + Log4(("GstHGCMCall: parm=%u type=embed: cb=0\n", iParm)); + break; + + + case VMMDevHGCMParmType_LinAddr_Locked_In: + case VMMDevHGCMParmType_LinAddr_Locked_Out: + case VMMDevHGCMParmType_LinAddr_Locked: + if (fIsUser) + return VERR_INVALID_PARAMETER; + if (!VBGLR0_CAN_USE_PHYS_PAGE_LIST(/*a_fLocked =*/ true)) + { + cb = pSrcParm->u.Pointer.size; + AssertMsgReturn(cb <= VBGLR0_MAX_HGCM_KERNEL_PARM, ("%#x > %#x\n", cb, VBGLR0_MAX_HGCM_KERNEL_PARM), + VERR_OUT_OF_RANGE); + if (cb != 0) + Log4(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p\n", + iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr)); + else + Log4(("GstHGCMCall: parm=%u type=%#x: cb=0\n", iParm, pSrcParm->type)); + break; + } + RT_FALL_THRU(); + + case VMMDevHGCMParmType_LinAddr_In: + case VMMDevHGCMParmType_LinAddr_Out: + case VMMDevHGCMParmType_LinAddr: + cb = pSrcParm->u.Pointer.size; + if (cb != 0) + { +#ifdef USE_BOUNCE_BUFFERS + void *pvSmallBuf = NULL; +#endif + uint32_t iLockBuf = pParmInfo->cLockBufs; + RTR0MEMOBJ hObj; + int rc; + uint32_t fAccess = pSrcParm->type == VMMDevHGCMParmType_LinAddr_In + || pSrcParm->type == VMMDevHGCMParmType_LinAddr_Locked_In + ? RTMEM_PROT_READ + : RTMEM_PROT_READ | RTMEM_PROT_WRITE; + + AssertReturn(iLockBuf < RT_ELEMENTS(pParmInfo->aLockBufs), VERR_INVALID_PARAMETER); + if (!fIsUser) + { + AssertMsgReturn(cb <= VBGLR0_MAX_HGCM_KERNEL_PARM, ("%#x > %#x\n", cb, VBGLR0_MAX_HGCM_KERNEL_PARM), + VERR_OUT_OF_RANGE); + rc = RTR0MemObjLockKernel(&hObj, (void *)pSrcParm->u.Pointer.u.linearAddr, cb, fAccess); + if (RT_FAILURE(rc)) + { + Log(("GstHGCMCall: id=%#x fn=%u parm=%u RTR0MemObjLockKernel(,%p,%#x) -> %Rrc\n", + pCallInfo->u32ClientID, pCallInfo->u32Function, iParm, pSrcParm->u.Pointer.u.linearAddr, cb, rc)); + return rc; + } + Log3(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p locked kernel -> %p\n", + iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr, hObj)); + } + else if (cb > VBGLR0_MAX_HGCM_USER_PARM) + { + Log(("GstHGCMCall: id=%#x fn=%u parm=%u pv=%p cb=%#x > %#x -> out of range\n", + pCallInfo->u32ClientID, pCallInfo->u32Function, iParm, pSrcParm->u.Pointer.u.linearAddr, + cb, VBGLR0_MAX_HGCM_USER_PARM)); + return VERR_OUT_OF_RANGE; + } + else + { +#ifndef USE_BOUNCE_BUFFERS + rc = RTR0MemObjLockUser(&hObj, (RTR3PTR)pSrcParm->u.Pointer.u.linearAddr, cb, fAccess, NIL_RTR0PROCESS); + if (RT_FAILURE(rc)) + { + Log(("GstHGCMCall: id=%#x fn=%u parm=%u RTR0MemObjLockUser(,%p,%#x,nil) -> %Rrc\n", + pCallInfo->u32ClientID, pCallInfo->u32Function, iParm, pSrcParm->u.Pointer.u.linearAddr, cb, rc)); + return rc; + } + Log3(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p locked user -> %p\n", + iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr, hObj)); + +#else /* USE_BOUNCE_BUFFERS */ + /* + * This is a bit massive, but we don't want to waste a + * whole page for a 3 byte string buffer (guest props). + * + * The threshold is ASSUMING sizeof(RTMEMHDR) == 16 and + * the system is using some power of two allocator. + */ + /** @todo A more efficient strategy would be to combine buffers. However it + * is probably going to be more massive than the current code, so + * it can wait till later. */ + bool fCopyIn = pSrcParm->type != VMMDevHGCMParmType_LinAddr_Out + && pSrcParm->type != VMMDevHGCMParmType_LinAddr_Locked_Out; + if (cb <= PAGE_SIZE / 2 - 16) + { + pvSmallBuf = fCopyIn ? RTMemTmpAlloc(cb) : RTMemTmpAllocZ(cb); + if (RT_UNLIKELY(!pvSmallBuf)) + return VERR_NO_MEMORY; + if (fCopyIn) + { + rc = RTR0MemUserCopyFrom(pvSmallBuf, pSrcParm->u.Pointer.u.linearAddr, cb); + if (RT_FAILURE(rc)) + { + RTMemTmpFree(pvSmallBuf); + Log(("GstHGCMCall: id=%#x fn=%u parm=%u RTR0MemUserCopyFrom(,%p,%#x) -> %Rrc\n", + pCallInfo->u32ClientID, pCallInfo->u32Function, iParm, + pSrcParm->u.Pointer.u.linearAddr, cb, rc)); + return rc; + } + } + rc = RTR0MemObjLockKernel(&hObj, pvSmallBuf, cb, fAccess); + if (RT_FAILURE(rc)) + { + RTMemTmpFree(pvSmallBuf); + Log(("GstHGCMCall: RTR0MemObjLockKernel failed for small buffer: rc=%Rrc pvSmallBuf=%p cb=%#x\n", + rc, pvSmallBuf, cb)); + return rc; + } + Log3(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p small buffer %p -> %p\n", + iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr, pvSmallBuf, hObj)); + } + else + { + rc = RTR0MemObjAllocPage(&hObj, cb, false /*fExecutable*/); + if (RT_FAILURE(rc)) + return rc; + if (!fCopyIn) + memset(RTR0MemObjAddress(hObj), '\0', cb); + else + { + rc = RTR0MemUserCopyFrom(RTR0MemObjAddress(hObj), pSrcParm->u.Pointer.u.linearAddr, cb); + if (RT_FAILURE(rc)) + { + RTR0MemObjFree(hObj, false /*fFreeMappings*/); + Log(("GstHGCMCall: id=%#x fn=%u parm=%u RTR0MemUserCopyFrom(,%p,%#x) -> %Rrc\n", + pCallInfo->u32ClientID, pCallInfo->u32Function, iParm, + pSrcParm->u.Pointer.u.linearAddr, cb, rc)); + return rc; + } + } + Log3(("GstHGCMCall: parm=%u type=%#x: cb=%#010x pv=%p big buffer -> %p\n", + iParm, pSrcParm->type, cb, pSrcParm->u.Pointer.u.linearAddr, hObj)); + } +#endif /* USE_BOUNCE_BUFFERS */ + } + + pParmInfo->aLockBufs[iLockBuf].iParm = iParm; + pParmInfo->aLockBufs[iLockBuf].hObj = hObj; +#ifdef USE_BOUNCE_BUFFERS + pParmInfo->aLockBufs[iLockBuf].pvSmallBuf = pvSmallBuf; +#endif + pParmInfo->cLockBufs = iLockBuf + 1; + + if (VBGLR0_CAN_USE_PHYS_PAGE_LIST(/*a_fLocked =*/ false)) + { + size_t const cPages = RTR0MemObjSize(hObj) >> PAGE_SHIFT; + *pcbExtra += RT_UOFFSETOF_DYN(HGCMPageListInfo, aPages[cPages]); + } + } + else + Log4(("GstHGCMCall: parm=%u type=%#x: cb=0\n", iParm, pSrcParm->type)); + break; + + default: + return VERR_INVALID_PARAMETER; + } + } + + return VINF_SUCCESS; +} + + +/** + * Translates locked linear address to the normal type. + * The locked types are only for the guest side and not handled by the host. + * + * @returns normal linear address type. + * @param enmType The type. + */ +static HGCMFunctionParameterType vbglR0HGCMInternalConvertLinAddrType(HGCMFunctionParameterType enmType) +{ + switch (enmType) + { + case VMMDevHGCMParmType_LinAddr_Locked_In: + return VMMDevHGCMParmType_LinAddr_In; + case VMMDevHGCMParmType_LinAddr_Locked_Out: + return VMMDevHGCMParmType_LinAddr_Out; + case VMMDevHGCMParmType_LinAddr_Locked: + return VMMDevHGCMParmType_LinAddr; + default: + return enmType; + } +} + + +/** + * Translates linear address types to page list direction flags. + * + * @returns page list flags. + * @param enmType The type. + */ +static uint32_t vbglR0HGCMInternalLinAddrTypeToPageListFlags(HGCMFunctionParameterType enmType) +{ + switch (enmType) + { + case VMMDevHGCMParmType_LinAddr_In: + case VMMDevHGCMParmType_LinAddr_Locked_In: + return VBOX_HGCM_F_PARM_DIRECTION_TO_HOST; + + case VMMDevHGCMParmType_LinAddr_Out: + case VMMDevHGCMParmType_LinAddr_Locked_Out: + return VBOX_HGCM_F_PARM_DIRECTION_FROM_HOST; + + default: AssertFailed(); RT_FALL_THRU(); + case VMMDevHGCMParmType_LinAddr: + case VMMDevHGCMParmType_LinAddr_Locked: + return VBOX_HGCM_F_PARM_DIRECTION_BOTH; + } +} + + +/** + * Initializes the call request that we're sending to the host. + * + * @returns VBox status code. + * + * @param pCallInfo The call info. + * @param cbCallInfo The size of the call info structure. + * @param fRequestor VMMDEV_REQUESTOR_XXX. + * @param fIsUser Is it a user request or kernel request. + * @param pcbExtra Where to return the extra request space needed for + * physical page lists. + */ +static void vbglR0HGCMInternalInitCall(VMMDevHGCMCall *pHGCMCall, PCVBGLIOCHGCMCALL pCallInfo, + uint32_t cbCallInfo, uint32_t fRequestor, bool fIsUser, struct VbglR0ParmInfo *pParmInfo) +{ + HGCMFunctionParameter const *pSrcParm = VBGL_HGCM_GET_CALL_PARMS(pCallInfo); + HGCMFunctionParameter *pDstParm = VMMDEV_HGCM_CALL_PARMS(pHGCMCall); + uint32_t const cParms = pCallInfo->cParms; + uint32_t offExtra = (uint32_t)((uintptr_t)(pDstParm + cParms) - (uintptr_t)pHGCMCall); + uint32_t iLockBuf = 0; + uint32_t iParm; + RT_NOREF1(cbCallInfo); +#ifndef USE_BOUNCE_BUFFERS + RT_NOREF1(fIsUser); +#endif + + /* + * The call request headers. + */ + pHGCMCall->header.header.fRequestor = !fIsUser || (fRequestor & VMMDEV_REQUESTOR_USERMODE) ? fRequestor + : VMMDEV_REQUESTOR_USERMODE | VMMDEV_REQUESTOR_USR_NOT_GIVEN + | VMMDEV_REQUESTOR_TRUST_NOT_GIVEN | VMMDEV_REQUESTOR_CON_DONT_KNOW; + + pHGCMCall->header.fu32Flags = 0; + pHGCMCall->header.result = VINF_SUCCESS; + + pHGCMCall->u32ClientID = pCallInfo->u32ClientID; + pHGCMCall->u32Function = pCallInfo->u32Function; + pHGCMCall->cParms = cParms; + + /* + * The parameters. + */ + for (iParm = 0; iParm < cParms; iParm++, pSrcParm++, pDstParm++) + { + switch (pSrcParm->type) + { + case VMMDevHGCMParmType_32bit: + case VMMDevHGCMParmType_64bit: + *pDstParm = *pSrcParm; + break; + + case VMMDevHGCMParmType_PageList: + case VMMDevHGCMParmType_ContiguousPageList: + pDstParm->type = pSrcParm->type; + pDstParm->u.PageList.size = pSrcParm->u.PageList.size; + if (pSrcParm->u.PageList.size) + { + HGCMPageListInfo const *pSrcPgLst = (HGCMPageListInfo *)((uint8_t *)pCallInfo + pSrcParm->u.PageList.offset); + HGCMPageListInfo *pDstPgLst = (HGCMPageListInfo *)((uint8_t *)pHGCMCall + offExtra); + uint32_t const cPages = pSrcPgLst->cPages; + uint32_t iPage; + + pDstParm->u.PageList.offset = offExtra; + pDstPgLst->flags = pSrcPgLst->flags; + pDstPgLst->offFirstPage = pSrcPgLst->offFirstPage; + pDstPgLst->cPages = (uint16_t)cPages; + for (iPage = 0; iPage < cPages; iPage++) + pDstPgLst->aPages[iPage] = pSrcPgLst->aPages[iPage]; + + offExtra += RT_UOFFSETOF_DYN(HGCMPageListInfo, aPages[cPages]); + } + else + pDstParm->u.PageList.offset = 0; /** @todo will fail on the host side now */ + break; + + case VMMDevHGCMParmType_Embedded: + { + uint32_t const cb = pSrcParm->u.Embedded.cbData; + pDstParm->type = VMMDevHGCMParmType_Embedded; + pDstParm->u.Embedded.cbData = cb; + pDstParm->u.Embedded.offData = offExtra; + if (cb > 0) + { + uint8_t *pbDst = (uint8_t *)pHGCMCall + offExtra; + if (pSrcParm->u.Embedded.fFlags & VBOX_HGCM_F_PARM_DIRECTION_TO_HOST) + { + memcpy(pbDst, (uint8_t const *)pCallInfo + pSrcParm->u.Embedded.offData, cb); + if (RT_ALIGN(cb, 8) != cb) + memset(pbDst + cb, 0, RT_ALIGN(cb, 8) - cb); + } + else + RT_BZERO(pbDst, RT_ALIGN(cb, 8)); + offExtra += RT_ALIGN(cb, 8); + } + break; + } + + case VMMDevHGCMParmType_LinAddr_Locked_In: + case VMMDevHGCMParmType_LinAddr_Locked_Out: + case VMMDevHGCMParmType_LinAddr_Locked: + if (!VBGLR0_CAN_USE_PHYS_PAGE_LIST(/*a_fLocked =*/ true)) + { + *pDstParm = *pSrcParm; + pDstParm->type = vbglR0HGCMInternalConvertLinAddrType(pSrcParm->type); + break; + } + RT_FALL_THRU(); + + case VMMDevHGCMParmType_LinAddr_In: + case VMMDevHGCMParmType_LinAddr_Out: + case VMMDevHGCMParmType_LinAddr: + if (pSrcParm->u.Pointer.size != 0) + { +#ifdef USE_BOUNCE_BUFFERS + void *pvSmallBuf = pParmInfo->aLockBufs[iLockBuf].pvSmallBuf; +#endif + RTR0MEMOBJ hObj = pParmInfo->aLockBufs[iLockBuf].hObj; + Assert(iParm == pParmInfo->aLockBufs[iLockBuf].iParm); + + if (VBGLR0_CAN_USE_PHYS_PAGE_LIST(/*a_fLocked =*/ false)) + { + HGCMPageListInfo *pDstPgLst = (HGCMPageListInfo *)((uint8_t *)pHGCMCall + offExtra); + size_t const cPages = RTR0MemObjSize(hObj) >> PAGE_SHIFT; + size_t iPage; + + pDstParm->type = VMMDevHGCMParmType_PageList; + pDstParm->u.PageList.size = pSrcParm->u.Pointer.size; + pDstParm->u.PageList.offset = offExtra; + pDstPgLst->flags = vbglR0HGCMInternalLinAddrTypeToPageListFlags(pSrcParm->type); +#ifdef USE_BOUNCE_BUFFERS + if (fIsUser) + pDstPgLst->offFirstPage = (uintptr_t)pvSmallBuf & PAGE_OFFSET_MASK; + else +#endif + pDstPgLst->offFirstPage = (uint16_t)(pSrcParm->u.Pointer.u.linearAddr & PAGE_OFFSET_MASK); + pDstPgLst->cPages = (uint16_t)cPages; Assert(pDstPgLst->cPages == cPages); + for (iPage = 0; iPage < cPages; iPage++) + { + pDstPgLst->aPages[iPage] = RTR0MemObjGetPagePhysAddr(hObj, iPage); + Assert(pDstPgLst->aPages[iPage] != NIL_RTHCPHYS); + } + + offExtra += RT_UOFFSETOF_DYN(HGCMPageListInfo, aPages[cPages]); + } + else + { + pDstParm->type = vbglR0HGCMInternalConvertLinAddrType(pSrcParm->type); + pDstParm->u.Pointer.size = pSrcParm->u.Pointer.size; +#ifdef USE_BOUNCE_BUFFERS + if (fIsUser) + pDstParm->u.Pointer.u.linearAddr = pvSmallBuf + ? (uintptr_t)pvSmallBuf + : (uintptr_t)RTR0MemObjAddress(hObj); + else +#endif + pDstParm->u.Pointer.u.linearAddr = pSrcParm->u.Pointer.u.linearAddr; + } + iLockBuf++; + } + else + { + pDstParm->type = vbglR0HGCMInternalConvertLinAddrType(pSrcParm->type); + pDstParm->u.Pointer.size = 0; + pDstParm->u.Pointer.u.linearAddr = 0; + } + break; + + default: + AssertFailed(); + pDstParm->type = VMMDevHGCMParmType_Invalid; + break; + } + } +} + + +/** + * Performs the call and completion wait. + * + * @returns VBox status code of this operation, not necessarily the call. + * + * @param pHGCMCall The HGCM call info. + * @param pfnAsyncCallback The async callback that will wait for the call + * to complete. + * @param pvAsyncData Argument for the callback. + * @param u32AsyncData Argument for the callback. + * @param pfLeakIt Where to return the leak it / free it, + * indicator. Cancellation fun. + */ +static int vbglR0HGCMInternalDoCall(VMMDevHGCMCall *pHGCMCall, PFNVBGLHGCMCALLBACK pfnAsyncCallback, + void *pvAsyncData, uint32_t u32AsyncData, bool *pfLeakIt) +{ + int rc; + + Log(("calling VbglR0GRPerform\n")); + rc = VbglR0GRPerform(&pHGCMCall->header.header); + Log(("VbglR0GRPerform rc = %Rrc (header rc=%d)\n", rc, pHGCMCall->header.result)); + + /* + * If the call failed, but as a result of the request itself, then pretend + * success. Upper layers will interpret the result code in the packet. + */ + if ( RT_FAILURE(rc) + && rc == pHGCMCall->header.result) + { + Assert(pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE); + rc = VINF_SUCCESS; + } + + /* + * Check if host decides to process the request asynchronously, + * if so, we wait for it to complete using the caller supplied callback. + */ + *pfLeakIt = false; + if (rc == VINF_HGCM_ASYNC_EXECUTE) + { + Log(("Processing HGCM call asynchronously\n")); + rc = pfnAsyncCallback(&pHGCMCall->header, pvAsyncData, u32AsyncData); + if (pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE) + { + Assert(!(pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_CANCELLED)); + rc = VINF_SUCCESS; + } + else + { + /* + * The request didn't complete in time or the call was interrupted, + * the RC from the callback indicates which. Try cancel the request. + * + * This is a bit messy because we're racing request completion. Sorry. + */ + /** @todo It would be nice if we could use the waiter callback to do further + * waiting in case of a completion race. If it wasn't for WINNT having its own + * version of all that stuff, I would've done it already. */ + VMMDevHGCMCancel2 *pCancelReq; + int rc2 = VbglR0GRAlloc((VMMDevRequestHeader **)&pCancelReq, sizeof(*pCancelReq), VMMDevReq_HGCMCancel2); + if (RT_SUCCESS(rc2)) + { + pCancelReq->physReqToCancel = VbglR0PhysHeapGetPhysAddr(pHGCMCall); + rc2 = VbglR0GRPerform(&pCancelReq->header); + VbglR0GRFree(&pCancelReq->header); + } +#if 1 /** @todo ADDVER: Remove this on next minor version change. */ + if (rc2 == VERR_NOT_IMPLEMENTED) + { + /* host is too old, or we're out of heap. */ + pHGCMCall->header.fu32Flags |= VBOX_HGCM_REQ_CANCELLED; + pHGCMCall->header.header.requestType = VMMDevReq_HGCMCancel; + rc2 = VbglR0GRPerform(&pHGCMCall->header.header); + if (rc2 == VERR_INVALID_PARAMETER) + rc2 = VERR_NOT_FOUND; + else if (RT_SUCCESS(rc)) + RTThreadSleep(1); + } +#endif + if (RT_SUCCESS(rc)) rc = VERR_INTERRUPTED; /** @todo weed this out from the WINNT VBoxGuest code. */ + if (RT_SUCCESS(rc2)) + { + Log(("vbglR0HGCMInternalDoCall: successfully cancelled\n")); + pHGCMCall->header.fu32Flags |= VBOX_HGCM_REQ_CANCELLED; + } + else + { + /* + * Wait for a bit while the host (hopefully) completes it. + */ + uint64_t u64Start = RTTimeSystemMilliTS(); + uint32_t cMilliesToWait = rc2 == VERR_NOT_FOUND || rc2 == VERR_SEM_DESTROYED ? 500 : 2000; + uint64_t cElapsed = 0; + if (rc2 != VERR_NOT_FOUND) + { + static unsigned s_cErrors = 0; + if (s_cErrors++ < 32) + LogRel(("vbglR0HGCMInternalDoCall: Failed to cancel the HGCM call on %Rrc: rc2=%Rrc\n", rc, rc2)); + } + else + Log(("vbglR0HGCMInternalDoCall: Cancel race rc=%Rrc rc2=%Rrc\n", rc, rc2)); + + do + { + ASMCompilerBarrier(); /* paranoia */ + if (pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE) + break; + RTThreadSleep(1); + cElapsed = RTTimeSystemMilliTS() - u64Start; + } while (cElapsed < cMilliesToWait); + + ASMCompilerBarrier(); /* paranoia^2 */ + if (pHGCMCall->header.fu32Flags & VBOX_HGCM_REQ_DONE) + rc = VINF_SUCCESS; + else + { + LogRel(("vbglR0HGCMInternalDoCall: Leaking %u bytes. Pending call to %u with %u parms. (rc2=%Rrc)\n", + pHGCMCall->header.header.size, pHGCMCall->u32Function, pHGCMCall->cParms, rc2)); + *pfLeakIt = true; + } + Log(("vbglR0HGCMInternalDoCall: Cancel race ended with rc=%Rrc (rc2=%Rrc) after %llu ms\n", rc, rc2, cElapsed)); + } + } + } + + Log(("GstHGCMCall: rc=%Rrc result=%Rrc fu32Flags=%#x fLeakIt=%d\n", + rc, pHGCMCall->header.result, pHGCMCall->header.fu32Flags, *pfLeakIt)); + return rc; +} + + +/** + * Copies the result of the call back to the caller info structure and user + * buffers (if using bounce buffers). + * + * @returns rc, unless RTR0MemUserCopyTo fails. + * @param pCallInfo Call info structure to update. + * @param cbCallInfo The size of the client request. + * @param pHGCMCall HGCM call request. + * @param cbHGCMCall The size of the HGCM call request. + * @param pParmInfo Parameter locking/buffering info. + * @param fIsUser Is it a user (true) or kernel request. + * @param rc The current result code. Passed along to + * preserve informational status codes. + */ +static int vbglR0HGCMInternalCopyBackResult(PVBGLIOCHGCMCALL pCallInfo, uint32_t cbCallInfo, + VMMDevHGCMCall const *pHGCMCall, uint32_t cbHGCMCall, + struct VbglR0ParmInfo *pParmInfo, bool fIsUser, int rc) +{ + HGCMFunctionParameter const *pSrcParm = VMMDEV_HGCM_CALL_PARMS(pHGCMCall); + HGCMFunctionParameter *pDstParm = VBGL_HGCM_GET_CALL_PARMS(pCallInfo); + uint32_t const cParms = pCallInfo->cParms; +#ifdef USE_BOUNCE_BUFFERS + uint32_t iLockBuf = 0; +#endif + uint32_t iParm; + RT_NOREF1(pParmInfo); +#ifndef USE_BOUNCE_BUFFERS + RT_NOREF1(fIsUser); +#endif + + /* + * The call result. + */ + pCallInfo->Hdr.rc = pHGCMCall->header.result; + + /* + * Copy back parameters. + */ + /** @todo This is assuming user data (pDstParm) is buffered. Not true + * on OS/2, though I'm not sure we care... */ + for (iParm = 0; iParm < cParms; iParm++, pSrcParm++, pDstParm++) + { + switch (pDstParm->type) + { + case VMMDevHGCMParmType_32bit: + case VMMDevHGCMParmType_64bit: + *pDstParm = *pSrcParm; + break; + + case VMMDevHGCMParmType_PageList: + case VMMDevHGCMParmType_ContiguousPageList: + pDstParm->u.PageList.size = pSrcParm->u.PageList.size; + break; + + case VMMDevHGCMParmType_Embedded: + { + uint32_t const cbDst = pDstParm->u.Embedded.cbData; + uint32_t cbSrc; + pDstParm->u.Embedded.cbData = cbSrc = pSrcParm->u.Embedded.cbData; + if ( cbSrc > 0 + && (pDstParm->u.Embedded.fFlags & VBOX_HGCM_F_PARM_DIRECTION_FROM_HOST)) + { + uint32_t const offDst = pDstParm->u.Embedded.offData; + uint32_t const offSrc = pSrcParm->u.Embedded.offData; + + AssertReturn(offDst < cbCallInfo, VERR_INTERNAL_ERROR_2); + AssertReturn(offDst >= sizeof(*pCallInfo) + cParms * sizeof(*pDstParm), VERR_INTERNAL_ERROR_2); + AssertReturn(cbDst <= cbCallInfo - offDst , VERR_INTERNAL_ERROR_2); + + AssertReturn(offSrc < cbCallInfo, VERR_INTERNAL_ERROR_2); + AssertReturn(offSrc >= sizeof(*pHGCMCall) + cParms * sizeof(*pSrcParm), VERR_INTERNAL_ERROR_2); + if (cbSrc <= cbHGCMCall - offSrc) + { /* likely */ } + else + { + /* Special case: Buffer overflow w/ correct size given. */ + AssertReturn(RT_FAILURE_NP(rc), VERR_INTERNAL_ERROR_2); + cbSrc = cbHGCMCall - offSrc; + } + memcpy((uint8_t *)pCallInfo + offDst, (uint8_t const *)pHGCMCall + offSrc, RT_MIN(cbSrc, cbDst)); + } + break; + } + + case VMMDevHGCMParmType_LinAddr_Locked_In: + case VMMDevHGCMParmType_LinAddr_In: +#ifdef USE_BOUNCE_BUFFERS + if ( fIsUser + && iLockBuf < pParmInfo->cLockBufs + && iParm == pParmInfo->aLockBufs[iLockBuf].iParm) + iLockBuf++; +#endif + pDstParm->u.Pointer.size = pSrcParm->u.Pointer.size; + break; + + case VMMDevHGCMParmType_LinAddr_Locked_Out: + case VMMDevHGCMParmType_LinAddr_Locked: + if (!VBGLR0_CAN_USE_PHYS_PAGE_LIST(/*a_fLocked =*/ true)) + { + pDstParm->u.Pointer.size = pSrcParm->u.Pointer.size; + break; + } + RT_FALL_THRU(); + + case VMMDevHGCMParmType_LinAddr_Out: + case VMMDevHGCMParmType_LinAddr: + { +#ifdef USE_BOUNCE_BUFFERS + if (fIsUser) + { + size_t cbOut = RT_MIN(pSrcParm->u.Pointer.size, pDstParm->u.Pointer.size); + if (cbOut) + { + int rc2; + Assert(pParmInfo->aLockBufs[iLockBuf].iParm == iParm); + rc2 = RTR0MemUserCopyTo((RTR3PTR)pDstParm->u.Pointer.u.linearAddr, + pParmInfo->aLockBufs[iLockBuf].pvSmallBuf + ? pParmInfo->aLockBufs[iLockBuf].pvSmallBuf + : RTR0MemObjAddress(pParmInfo->aLockBufs[iLockBuf].hObj), + cbOut); + if (RT_FAILURE(rc2)) + return rc2; + iLockBuf++; + } + else if ( iLockBuf < pParmInfo->cLockBufs + && iParm == pParmInfo->aLockBufs[iLockBuf].iParm) + iLockBuf++; + } +#endif + pDstParm->u.Pointer.size = pSrcParm->u.Pointer.size; + break; + } + + default: + AssertFailed(); + rc = VERR_INTERNAL_ERROR_4; + break; + } + } + +#ifdef USE_BOUNCE_BUFFERS + Assert(!fIsUser || pParmInfo->cLockBufs == iLockBuf); +#endif + return rc; +} + + +DECLR0VBGL(int) VbglR0HGCMInternalCall(PVBGLIOCHGCMCALL pCallInfo, uint32_t cbCallInfo, uint32_t fFlags, uint32_t fRequestor, + PFNVBGLHGCMCALLBACK pfnAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData) +{ + bool fIsUser = (fFlags & VBGLR0_HGCMCALL_F_MODE_MASK) == VBGLR0_HGCMCALL_F_USER; + struct VbglR0ParmInfo ParmInfo; + size_t cbExtra; + int rc; + + /* + * Basic validation. + */ + AssertMsgReturn( !pCallInfo + || !pfnAsyncCallback + || pCallInfo->cParms > VBOX_HGCM_MAX_PARMS + || !(fFlags & ~VBGLR0_HGCMCALL_F_MODE_MASK), + ("pCallInfo=%p pfnAsyncCallback=%p fFlags=%#x\n", pCallInfo, pfnAsyncCallback, fFlags), + VERR_INVALID_PARAMETER); + AssertReturn( cbCallInfo >= sizeof(VBGLIOCHGCMCALL) + || cbCallInfo >= pCallInfo->cParms * sizeof(HGCMFunctionParameter), + VERR_INVALID_PARAMETER); + + Log(("GstHGCMCall: u32ClientID=%#x u32Function=%u cParms=%u cbCallInfo=%#x fFlags=%#x\n", + pCallInfo->u32ClientID, pCallInfo->u32ClientID, pCallInfo->u32Function, pCallInfo->cParms, cbCallInfo, fFlags)); + + /* + * Validate, lock and buffer the parameters for the call. + * This will calculate the amount of extra space for physical page list. + */ + rc = vbglR0HGCMInternalPreprocessCall(pCallInfo, cbCallInfo, fIsUser, &ParmInfo, &cbExtra); + if (RT_SUCCESS(rc)) + { + /* + * Allocate the request buffer and recreate the call request. + */ + VMMDevHGCMCall *pHGCMCall; + uint32_t const cbHGCMCall = sizeof(VMMDevHGCMCall) + pCallInfo->cParms * sizeof(HGCMFunctionParameter) + (uint32_t)cbExtra; + rc = VbglR0GRAlloc((VMMDevRequestHeader **)&pHGCMCall, cbHGCMCall, VMMDevReq_HGCMCall); + if (RT_SUCCESS(rc)) + { + bool fLeakIt; + vbglR0HGCMInternalInitCall(pHGCMCall, pCallInfo, cbCallInfo, fRequestor, fIsUser, &ParmInfo); + + /* + * Perform the call. + */ + rc = vbglR0HGCMInternalDoCall(pHGCMCall, pfnAsyncCallback, pvAsyncData, u32AsyncData, &fLeakIt); + if (RT_SUCCESS(rc)) + { + /* + * Copy back the result (parameters and buffers that changed). + */ + rc = vbglR0HGCMInternalCopyBackResult(pCallInfo, cbCallInfo, pHGCMCall, cbHGCMCall, &ParmInfo, fIsUser, rc); + } + else + { + if ( rc != VERR_INTERRUPTED + && rc != VERR_TIMEOUT) + { + static unsigned s_cErrors = 0; + if (s_cErrors++ < 32) + LogRel(("VbglR0HGCMInternalCall: vbglR0HGCMInternalDoCall failed. rc=%Rrc\n", rc)); + } + } + + if (!fLeakIt) + VbglR0GRFree(&pHGCMCall->header.header); + } + } + else + LogRel(("VbglR0HGCMInternalCall: vbglR0HGCMInternalPreprocessCall failed. rc=%Rrc\n", rc)); + + /* + * Release locks and free bounce buffers. + */ + if (ParmInfo.cLockBufs) + while (ParmInfo.cLockBufs-- > 0) + { + RTR0MemObjFree(ParmInfo.aLockBufs[ParmInfo.cLockBufs].hObj, false /*fFreeMappings*/); +#ifdef USE_BOUNCE_BUFFERS + RTMemTmpFree(ParmInfo.aLockBufs[ParmInfo.cLockBufs].pvSmallBuf); +#endif + } + + return rc; +} + + +#if ARCH_BITS == 64 +DECLR0VBGL(int) VbglR0HGCMInternalCall32(PVBGLIOCHGCMCALL pCallInfo, uint32_t cbCallInfo, uint32_t fFlags, uint32_t fRequestor, + PFNVBGLHGCMCALLBACK pfnAsyncCallback, void *pvAsyncData, uint32_t u32AsyncData) +{ + PVBGLIOCHGCMCALL pCallInfo64 = NULL; + HGCMFunctionParameter *pParm64 = NULL; + HGCMFunctionParameter32 *pParm32 = NULL; + uint32_t cParms = 0; + uint32_t iParm = 0; + int rc = VINF_SUCCESS; + + /* + * Input validation. + */ + AssertMsgReturn( !pCallInfo + || !pfnAsyncCallback + || pCallInfo->cParms > VBOX_HGCM_MAX_PARMS + || !(fFlags & ~VBGLR0_HGCMCALL_F_MODE_MASK), + ("pCallInfo=%p pfnAsyncCallback=%p fFlags=%#x\n", pCallInfo, pfnAsyncCallback, fFlags), + VERR_INVALID_PARAMETER); + AssertReturn( cbCallInfo >= sizeof(VBGLIOCHGCMCALL) + || cbCallInfo >= pCallInfo->cParms * sizeof(HGCMFunctionParameter32), + VERR_INVALID_PARAMETER); + + /* This Assert does not work on Solaris/Windows 64/32 mixed mode, not sure why, skipping for now */ +#if !defined(RT_OS_SOLARIS) && !defined(RT_OS_WINDOWS) + AssertReturn((fFlags & VBGLR0_HGCMCALL_F_MODE_MASK) == VBGLR0_HGCMCALL_F_KERNEL, VERR_WRONG_ORDER); +#endif + + cParms = pCallInfo->cParms; + Log(("VbglR0HGCMInternalCall32: cParms=%d, u32Function=%d, fFlags=%#x\n", cParms, pCallInfo->u32Function, fFlags)); + + /* + * The simple approach, allocate a temporary request and convert the parameters. + */ + pCallInfo64 = (PVBGLIOCHGCMCALL)RTMemTmpAllocZ(sizeof(*pCallInfo64) + cParms * sizeof(HGCMFunctionParameter)); + if (!pCallInfo64) + return VERR_NO_TMP_MEMORY; + + *pCallInfo64 = *pCallInfo; + pParm32 = VBGL_HGCM_GET_CALL_PARMS32(pCallInfo); + pParm64 = VBGL_HGCM_GET_CALL_PARMS(pCallInfo64); + for (iParm = 0; iParm < cParms; iParm++, pParm32++, pParm64++) + { + switch (pParm32->type) + { + case VMMDevHGCMParmType_32bit: + pParm64->type = VMMDevHGCMParmType_32bit; + pParm64->u.value32 = pParm32->u.value32; + break; + + case VMMDevHGCMParmType_64bit: + pParm64->type = VMMDevHGCMParmType_64bit; + pParm64->u.value64 = pParm32->u.value64; + break; + + case VMMDevHGCMParmType_LinAddr_Out: + case VMMDevHGCMParmType_LinAddr: + case VMMDevHGCMParmType_LinAddr_In: + pParm64->type = pParm32->type; + pParm64->u.Pointer.size = pParm32->u.Pointer.size; + pParm64->u.Pointer.u.linearAddr = pParm32->u.Pointer.u.linearAddr; + break; + + default: + rc = VERR_INVALID_PARAMETER; + LogRel(("VbglR0HGCMInternalCall32: pParm32 type %#x invalid.\n", pParm32->type)); + break; + } + if (RT_FAILURE(rc)) + break; + } + if (RT_SUCCESS(rc)) + { + rc = VbglR0HGCMInternalCall(pCallInfo64, sizeof(*pCallInfo64) + cParms * sizeof(HGCMFunctionParameter), fFlags, + fRequestor, pfnAsyncCallback, pvAsyncData, u32AsyncData); + + if (RT_SUCCESS(rc)) + { + *pCallInfo = *pCallInfo64; + + /* + * Copy back. + */ + pParm32 = VBGL_HGCM_GET_CALL_PARMS32(pCallInfo); + pParm64 = VBGL_HGCM_GET_CALL_PARMS(pCallInfo64); + for (iParm = 0; iParm < cParms; iParm++, pParm32++, pParm64++) + { + switch (pParm64->type) + { + case VMMDevHGCMParmType_32bit: + pParm32->u.value32 = pParm64->u.value32; + break; + + case VMMDevHGCMParmType_64bit: + pParm32->u.value64 = pParm64->u.value64; + break; + + case VMMDevHGCMParmType_LinAddr_Out: + case VMMDevHGCMParmType_LinAddr: + case VMMDevHGCMParmType_LinAddr_In: + pParm32->u.Pointer.size = pParm64->u.Pointer.size; + break; + + default: + LogRel(("VbglR0HGCMInternalCall32: failed invalid pParm32 type %d\n", pParm32->type)); + rc = VERR_INTERNAL_ERROR_3; + break; + } + } + } + else + { + static unsigned s_cErrors = 0; + if (s_cErrors++ < 32) + LogRel(("VbglR0HGCMInternalCall32: VbglR0HGCMInternalCall failed. rc=%Rrc\n", rc)); + } + } + else + { + static unsigned s_cErrors = 0; + if (s_cErrors++ < 32) + LogRel(("VbglR0HGCMInternalCall32: failed. rc=%Rrc\n", rc)); + } + + RTMemTmpFree(pCallInfo64); + return rc; +} +#endif /* ARCH_BITS == 64 */ + |