C++ IsListEmpty函数代码示例

ULONG
CounterInsertGroup(
	IN PDIALOG_OBJECT Object
	)
{
	PLIST_ENTRY ListHead;
	PLIST_ENTRY ListEntry;
	PMSP_DTL_OBJECT DtlObject;
	PCOUNTER_CONTEXT Context;
	PTREELIST_OBJECT TreeList;
	PMSP_COUNTER_GROUP Group;
	TVINSERTSTRUCT tvi = {0};
	HTREEITEM hItemGroup;
	HTREEITEM hItemRoot;
	HWND hWndTree;
	PMSP_COUNTER_OBJECT Counter;
	ULONG Count;
	
	Context = SdkGetContext(Object, COUNTER_CONTEXT);
	DtlObject = Context->DtlObject;
	TreeList = Context->TreeList;
	hWndTree = TreeList->hWndTree;

	MspReferenceCounterObject(DtlObject, &Counter);
	Context->Counter = Counter;

	if (IsListEmpty(&Counter->GroupListHead)) {
		return 0;
	}

	Count = 0;

	//
	// Insert unique root node
	//

	tvi.hParent = NULL; 
	tvi.hInsertAfter = TVI_ROOT; 
	tvi.item.mask = TVIF_TEXT | TVIF_PARAM; 
	tvi.item.pszText = Counter->Name;
	tvi.item.lParam = (LPARAM)Counter; 
	hItemRoot = TreeView_InsertItem(hWndTree, &tvi);

	//
	// Insert process group
	//

	hItemGroup = hItemRoot;
	ListHead = &Counter->GroupListHead;
	ListEntry = ListHead->Flink;

	while (ListEntry != ListHead) {

		Group = CONTAINING_RECORD(ListEntry, MSP_COUNTER_GROUP, ListEntry);

		tvi.hParent = hItemRoot; 
		tvi.hInsertAfter = hItemGroup; 
		tvi.item.mask = TVIF_TEXT | TVIF_PARAM; 
		tvi.item.pszText = Group->Name;
		tvi.item.lParam = (LPARAM)Group; 
		hItemGroup = TreeView_InsertItem(hWndTree, &tvi);

		CounterInsertEntry(hWndTree, hItemGroup, Group);

		ListEntry = ListEntry->Flink;
		Count += 1;
	}

	return Count;
}

/*-------------------------------------------------------------------*/
int bind_device_ex (DEVBLK* dev, char* spec, ONCONNECT fn, void* arg )
{
    bind_struct* bs;
    int was_list_empty;

    if (!init_done) init_sockdev();

    if (sysblk.shutdown) return 0;

    logdebug("bind_device (%4.4X, %s)\n", dev->devnum, spec);

    /* Error if device already bound */
    if (dev->bs)
    {
        logmsg (_("HHCSD001E Device %4.4X already bound to socket %s\n"),
            dev->devnum, dev->bs->spec);
        return 0;   /* (failure) */
    }

    /* Create a new bind_struct entry */
    bs = malloc(sizeof(bind_struct));

    if (!bs)
    {
        logmsg (_("HHCSD002E bind_device malloc() failed for device %4.4X\n"),
            dev->devnum);
        return 0;   /* (failure) */
    }

    memset(bs,0,sizeof(bind_struct));

    bs->fn  = fn;
    bs->arg = arg;

    if (!(bs->spec = strdup(spec)))
    {
        logmsg (_("HHCSD003E bind_device strdup() failed for device %4.4X\n"),
            dev->devnum);
        free (bs);
        return 0;   /* (failure) */
    }

    /* Create a listening socket */
    if (bs->spec[0] == '/') bs->sd = unix_socket (bs->spec);
    else                    bs->sd = inet_socket (bs->spec);
    if (bs->sd == -1)
    {
        /* (error message already issued) */
        free( bs->spec );
        free( bs );
        return 0; /* (failure) */
    }

    /* Chain device and bind_struct to each other */
    dev->bs = bs;
    bs->dev = dev;

    /* Add the new entry to our list of bound devices
       and create the socket thread that will listen
       for connections (if it doesn't already exist) */

    obtain_lock( &bind_lock );

    was_list_empty = IsListEmpty( &bind_head );

    InsertListTail( &bind_head, &bs->bind_link );

    if ( was_list_empty )
    {
        if ( create_thread( &sysblk.socktid, JOINABLE,
                            socket_thread, NULL, "socket_thread" ) )
            {
                logmsg( _( "HHCSD023E Cannot create socketdevice thread: errno=%d: %s\n" ),
                        errno, strerror( errno ) );
                RemoveListEntry( &bs->bind_link );
                close_socket(bs->sd);
                free( bs->spec );
                free( bs );
                release_lock( &bind_lock );
                return 0; /* (failure) */
            }
    }

    SIGNAL_SOCKDEV_THREAD();

    release_lock( &bind_lock );

    logmsg (_("HHCSD004I Device %4.4X bound to socket %s\n"),
        dev->devnum, dev->bs->spec);

    return 1;   /* (success) */
}

VOID
LpcExitThread (
    PETHREAD Thread
    )

/*++

Routine Description:

    This routine is called whenever a thread is exiting and need to cleanup the
    lpc port for the thread.

Arguments:

    Thread - Supplies the thread being terminated

Return Value:

    None.

--*/

{
    PLPCP_MESSAGE Msg;

    //
    //  Acquire the mutex that protects the LpcReplyMessage field of
    //  the thread.  Zero the field so nobody else tries to process it
    //  when we release the lock.
    //

    LpcpAcquireLpcpLock();

    if (!IsListEmpty( &Thread->LpcReplyChain )) {

        RemoveEntryList( &Thread->LpcReplyChain );
    }

    //
    //  Indicate that this thread is exiting
    //

    Thread->LpcExitThreadCalled = TRUE;
    Thread->LpcReplyMessageId = 0;

    //
    //  If we need to reply to a message then if the thread that we need to reply
    //  to is still around we want to dereference the thread and free the message
    //

    Msg = Thread->LpcReplyMessage;

    if (Msg != NULL) {

        Thread->LpcReplyMessage = NULL;

        if (Msg->RepliedToThread != NULL) {

            ObDereferenceObject( Msg->RepliedToThread );

            Msg->RepliedToThread = NULL;
        }

        LpcpTrace(( "Cleanup Msg %lx (%d) for Thread %lx allocated\n", Msg, IsListEmpty( &Msg->Entry ), Thread ));

        LpcpFreeToPortZone( Msg, TRUE );
    }

    //
    //  Free the global lpc lock
    //

    LpcpReleaseLpcpLock();

    //
    //  And return to our caller
    //

    return;
}

//.........这里部分代码省略.........

    if (ChkPck.ValueCount > 0 ||
        ChkPck.FlagCount > 2 ||
        (2 == ChkPck.FlagCount && !LibCheckVarGetFlag (&ChkPck, L"-b"))
        ) {
      PrintToken (STRING_TOKEN (STR_SHELLENV_GNC_TOO_MANY), HiiHandle, L"attrib");
      Status = EFI_INVALID_PARAMETER;
    } else {
      PrintToken (STRING_TOKEN (STR_ATTRIB_VERBOSE_HELP), HiiHandle);
      Status = EFI_SUCCESS;
    }

    goto Quit;
  }
  //
  // Local Variable Initializations
  //
  InitializeListHead (&FileList);
  Link    = NULL;
  Arg     = NULL;
  Remove  = 0;
  Add     = 0;

  //
  // Parse command line arguments
  //
  Item = GetFirstFlag (&ChkPck);
  for (Index = 0; Index < ChkPck.FlagCount; Index += 1) {
    if (Item->FlagStr[0] == '-') {
      //
      // Attributes to remove
      //
      Status = AttribSet (&Item->FlagStr[1], &Remove);
      if (EFI_ERROR (Status)) {
        PrintToken (STRING_TOKEN (STR_SHELLENV_GNC_INVALID_ARG), HiiHandle, L"attrib", Item->FlagStr);
        goto Done;
      }
    } else if (Item->FlagStr[0] == '+') {
      //
      // Attributes to Add
      //
      Status = AttribSet (&Item->FlagStr[1], &Add);
      if (EFI_ERROR (Status)) {
        PrintToken (STRING_TOKEN (STR_SHELLENV_GNC_INVALID_ARG), HiiHandle, L"attrib", Item->FlagStr);
        goto Done;
      }
    } else {
      //
      // we should never get here
      //
      ASSERT (FALSE);
    }

    Item = GetNextArg (Item);
  }

  Item = GetFirstArg (&ChkPck);
  for (Index = 0; Index < ChkPck.ValueCount; Index += 1) {
    Status = ShellFileMetaArg (Item->VarStr, &FileList);
    if (EFI_ERROR (Status)) {
      PrintToken (STRING_TOKEN (STR_ATTRIB_CANNOT_OPEN), HiiHandle, L"attrib", Item->VarStr, Status);
      goto Done;
    }

    Item = GetNextArg (Item);
  }
  //
  // if no file is specified, get the whole directory
  //
  if (IsListEmpty (&FileList)) {
    Status = ShellFileMetaArg (L"*", &FileList);
    if (EFI_ERROR (Status)) {
      PrintToken (STRING_TOKEN (STR_ATTRIB_CANNOT_OPEN_DIR), HiiHandle, L"attrib", Status);
      goto Done;
    }
  }

  ShellDelDupFileArg (&FileList);
  //
  // Attrib each file
  //
  for (Link = FileList.Flink; Link != &FileList; Link = Link->Flink) {
    //
    // Break the execution?
    //
    if (GetExecutionBreak ()) {
      goto Done;
    }

    Arg     = CR (Link, SHELL_FILE_ARG, Link, SHELL_FILE_ARG_SIGNATURE);
    Status  = AttribFile (Arg, Remove, Add);
  }

Done:
  ShellFreeFileList (&FileList);
Quit:
  LibCheckVarFreeVarList (&ChkPck);
  LibUnInitializeStrings ();
  return Status;
}

NDIS_STATUS
HelperPortFlushBSSList(
    __in PMP_PORT                 Port
    )
{
    MP_RW_LOCK_STATE          LockState;
    PLIST_ENTRY         pListEntry;
    PMP_BSS_ENTRY      pBSSEntry = NULL;
    LONG                APRefCount;
    LIST_ENTRY          TempList;
    PMP_HELPER_PORT     HelperPort = MP_GET_HELPPORT(Port);
    PMP_BSS_LIST       pDiscoveredBSSList = &(HelperPort->BSSList);

    //
    // Entries that are currently in use (eg for connection)
    // we cannot flush and instead would put in the temporary queue
    //
    InitializeListHead(&TempList);
    
    MP_ACQUIRE_WRITE_LOCK(&(HelperPort->BSSList.ListLock), &LockState);
        
    while (!IsListEmpty(&(pDiscoveredBSSList->List)))
    {
        pListEntry = RemoveHeadList(&(pDiscoveredBSSList->List));
        pBSSEntry = CONTAINING_RECORD(pListEntry, MP_BSS_ENTRY, Link);

        APRefCount = NdisInterlockedDecrement(&(pBSSEntry->RefCount));
        if (APRefCount == 0)
        {        
            NdisAcquireSpinLock(&(pBSSEntry->Lock));
            MPASSERT(pBSSEntry->pAssocRequest == NULL);
            MPASSERT(pBSSEntry->pAssocResponse == NULL);
            
            if (pBSSEntry->pDot11BeaconFrame != NULL)
            {
                MP_FREE_MEMORY(pBSSEntry->pDot11BeaconFrame);
                pBSSEntry->pDot11BeaconFrame = NULL;
                pBSSEntry->BeaconFrameSize = 0;
                pBSSEntry->MaxBeaconFrameSize= 0;
            }

            if (pBSSEntry->pDot11ProbeFrame != NULL)
            {
                MP_FREE_MEMORY(pBSSEntry->pDot11ProbeFrame);
                pBSSEntry->pDot11ProbeFrame = NULL;
                pBSSEntry->ProbeFrameSize = 0;
                pBSSEntry->MaxProbeFrameSize= 0;
            }
            
            pBSSEntry->pDot11InfoElemBlob = NULL;
            pBSSEntry->InfoElemBlobSize = 0;            
            NdisReleaseSpinLock(&(pBSSEntry->Lock));
            
            MP_FREE_MEMORY(pBSSEntry);        
        }
        else
        {
            // Restore refcount and save for adding back to list
            NdisInterlockedIncrement(&(pBSSEntry->RefCount));
            InsertTailList(&TempList, pListEntry);
        }
    }
    pDiscoveredBSSList->NumOfBSSEntries = 0;

    //
    // Restore entries that are in use
    //
    while (!IsListEmpty(&TempList))
    {
        pListEntry = RemoveHeadList(&TempList);

        InsertTailList(&(pDiscoveredBSSList->List), pListEntry);
        pDiscoveredBSSList->NumOfBSSEntries++;
    }

    // Since our scan list is flushed, also clear the last scan time
    HelperPort->ScanContext.LastScanTime = 0;
    
    MP_RELEASE_WRITE_LOCK(&(HelperPort->BSSList.ListLock), &LockState);

    return NDIS_STATUS_SUCCESS;

/*
kd> dt ndis!_NDIS_PROTOCOL_BLOCK
+0x000 Header           : _NDIS_OBJECT_HEADER
+0x004 ProtocolDriverContext : Ptr32 Void
+0x008 NextProtocol     : Ptr32 _NDIS_PROTOCOL_BLOCK
+0x00c OpenQueue        : Ptr32 _NDIS_OPEN_BLOCK
win7
*/
BOOLEAN	EnumNetCards()
{
	PNDIS_MINIPORT_BLOCK pMiniBlock=NULL;
	PNDIS_COMMON_OPEN_BLOCK_2k3_early	pOpenBlock=NULL;

	ULONG	MiniDriverBlockHeader	;
	ULONG	NetCardType	=	0;
	LIST_ENTRY		*pListEntry=NULL;
	NETCARDS_INFO		*pNI=NULL;
	NTSTATUS			status = STATUS_SUCCESS;
	ULONG			uTmp=0;
	ADAPTER_INFOEX	*pAdapterInfoEx	=	NULL;
	ADAPTER_INFO	AI;
	WCHAR			*p1,*p2;
	ULONG			index=0;
	UNICODE_STRING	uniTmp;
	DWORD		dwVersion=0;


	

	PKK_NDIS_PROTOCOL_BLOCK	pProtocol	=	(PKK_NDIS_PROTOCOL_BLOCK)GetProtocolHeader();

	dwVersion = GetWindowsVersion();
	p1=p2=NULL;

	//清空列表
	if (!IsListEmpty(&g_NetCardsInfoHeader.Next))
	{
		ExInterlockedRemoveHeadList(&g_NetCardsInfoHeader.Next, &g_NetCardsInfoLock);
// 		LockResource(&g_NetCardsInfoLock, TRUE);
// 		pListEntry = RemoveHeadList(&g_NetCardsInfoHeader.Next);
// 		UnlockResource(&g_NetCardsInfoLock);
		pNI	=	CONTAINING_RECORD(pListEntry, NETCARDS_INFO, Next);
		if (NULL==pNI)
		{

			DbgBreakPoint();

		}
		RtlFreeAnsiString(&pNI->Name);
		kfree(pNI);
	}
	status	=	GetAdapterInfo(NULL, &uTmp);
	if (status==STATUS_BUFFER_TOO_SMALL)
	{
		pAdapterInfoEx	=	kmalloc(uTmp);
		RtlZeroMemory(pAdapterInfoEx, uTmp);
		if (NULL== pAdapterInfoEx)
		{
			return FALSE;
		}
	}
	status = GetAdapterInfo(pAdapterInfoEx, &uTmp);
	if (pAdapterInfoEx->uNumber==0)
	{
		kprintf("GetAdapterInfo() return pAdapterInfoEx->uNumber==0");
		kfree(pAdapterInfoEx);
		return FALSE;
	}

	while (pProtocol)	
	{
		//search for  the nic driver block
		if (dwVersion==Windows_7||dwVersion==Windows_Vista)
		{
			if (((PNDIS_PROTOCOL_BLOCKWin7)pProtocol)->OpenQueue==0)
			{
				goto NextBlock;
			}
		}
		else
		{
			if (pProtocol->OpenQueue==NULL)
			{
				goto NextBlock;
			}
		}

		uTmp=0;
		//现在使用了protocol链表，所以要防止一个miniport多次使用的情况
		if (dwVersion==Windows_Vista||dwVersion==Windows_7)
		{
			PNDIS_OPEN_BLOCKWIN7 pOP7	=	(PNDIS_OPEN_BLOCKWIN7)((PNDIS_PROTOCOL_BLOCKWin7)pProtocol)->OpenQueue;
			pMiniBlock	=	pOP7->MiniportHandle;
		}
		else
		{
			pMiniBlock	=	pProtocol->OpenQueue->MiniportHandle;
		}

		pListEntry	=	g_NetCardsInfoHeader.Next.Flink;
//.........这里部分代码省略.........

VOID
NICHandleRecvInterrupt(
    IN  PFDO_DATA  FdoData
    )
/*++
Routine Description:

    Interrupt handler for receive processing. Put the received packets
    into an array and call NICServiceReadIrps. If we run low on
    RFDs, allocate another one.

    Assumption: This function is called with the Rcv SPINLOCK held.

Arguments:

    FdoData     Pointer to our FdoData

Return Value:

    None

--*/
{
    PMP_RFD         pMpRfd = NULL;
    PHW_RFD         pHwRfd = NULL;

    PMP_RFD         PacketArray[NIC_DEF_RFDS];
    PMP_RFD         PacketFreeArray[NIC_DEF_RFDS];
    UINT            PacketArrayCount;
    UINT            PacketFreeCount;
    UINT            Index;
    UINT            LoopIndex = 0;
    UINT            LoopCount = NIC_MAX_RFDS / NIC_DEF_RFDS + 1;    // avoid staying here too long

    BOOLEAN         bContinue = TRUE;
    BOOLEAN         bAllocNewRfd = FALSE;
    USHORT          PacketStatus;

    TraceEvents(TRACE_LEVEL_VERBOSE, DBG_READ, "---> NICHandleRecvInterrupt\n");

    ASSERT(FdoData->nReadyRecv >= NIC_MIN_RFDS);

    while (LoopIndex++ < LoopCount && bContinue)
    {
        PacketArrayCount = 0;
        PacketFreeCount = 0;

        //
        // Process up to the array size RFD's
        //
        while (PacketArrayCount < NIC_DEF_RFDS)
        {
            if (IsListEmpty(&FdoData->RecvList))
            {
                ASSERT(FdoData->nReadyRecv == 0);
                bContinue = FALSE;
                break;
            }

            //
            // Get the next MP_RFD to process
            //
            pMpRfd = (PMP_RFD)GetListHeadEntry(&FdoData->RecvList);

            //
            // Get the associated HW_RFD
            //
            pHwRfd = pMpRfd->HwRfd;

            //
            // Is this packet completed?
            //
            PacketStatus = NIC_RFD_GET_STATUS(pHwRfd);
            if (!NIC_RFD_STATUS_COMPLETED(PacketStatus))
            {
                bContinue = FALSE;
                break;
            }

            //
            // HW specific - check if actual count field has been updated
            //
            if (!NIC_RFD_VALID_ACTUALCOUNT(pHwRfd))
            {
                bContinue = FALSE;
                break;
            }


            //
            // Remove the RFD from the head of the List
            //
            RemoveEntryList((PLIST_ENTRY)pMpRfd);
            FdoData->nReadyRecv--;

            ASSERT(MP_TEST_FLAG(pMpRfd, fMP_RFD_RECV_READY));
            MP_CLEAR_FLAG(pMpRfd, fMP_RFD_RECV_READY);

            //
            // A good packet? drop it if not.
//.........这里部分代码省略.........

VOID
KeUnstackDetachProcess (
    IN PRKAPC_STATE ApcState
    )

/*++

Routine Description:

    This function detaches a thread from another process' address space
    and restores previous attach state.

Arguments:

    ApcState - Supplies a pointer to an APC state structure that was returned
        from a previous call to stack attach process.

Return Value:

    None.

--*/

{

    KIRQL OldIrql;
    PKPROCESS Process;
    PKTHREAD Thread;

    ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);

    //
    // Raise IRQL to dispatcher level and lock dispatcher database.
    //

    Thread = KeGetCurrentThread();
    KiLockDispatcherDatabase(&OldIrql);

    //
    // If the APC state has a distinguished process pointer value, then no
    // attach was performed on the paired call to stack attach process.
    //

    if (ApcState->Process != (PRKPROCESS)1) {

        //
        // If the current thread is not attached to another process, a kernel
        // APC is in progress, or either the kernel or user mode APC queues
        // are not empty, then call bug check.
        //

        if ((Thread->ApcStateIndex == 0) ||
             (Thread->ApcState.KernelApcInProgress) ||
             (IsListEmpty(&Thread->ApcState.ApcListHead[KernelMode]) == FALSE) ||
             (IsListEmpty(&Thread->ApcState.ApcListHead[UserMode]) == FALSE)) {
            KeBugCheck(INVALID_PROCESS_DETACH_ATTEMPT);
        }

        //
        // Unbias current process stack count and check if the process should
        // be swapped out of memory.
        //

        Process = Thread->ApcState.Process;
        Process->StackCount -= 1;
        if ((Process->StackCount == 0) &&
            (IsListEmpty(&Process->ThreadListHead) == FALSE)) {
            Process->State = ProcessInTransition;
            InsertTailList(&KiProcessOutSwapListHead, &Process->SwapListEntry);
            KiSwapEvent.Header.SignalState = 1;
            if (IsListEmpty(&KiSwapEvent.Header.WaitListHead) == FALSE) {
                KiWaitTest(&KiSwapEvent, BALANCE_INCREMENT);
            }
        }

        //
        // Restore APC state and check whether the kernel APC queue contains
        // an entry. If the kernel APC queue contains an entry then set kernel
        // APC pending and request a software interrupt at APC_LEVEL.
        //

        if (ApcState->Process != NULL) {
            KiMoveApcState(ApcState, &Thread->ApcState);

        } else {
            KiMoveApcState(&Thread->SavedApcState, &Thread->ApcState);
            Thread->SavedApcState.Process = (PKPROCESS)NULL;
            Thread->ApcStatePointer[0] = &Thread->ApcState;
            Thread->ApcStatePointer[1] = &Thread->SavedApcState;
            Thread->ApcStateIndex = 0;
        }

        if (IsListEmpty(&Thread->ApcState.ApcListHead[KernelMode]) == FALSE) {
            Thread->ApcState.KernelApcPending = TRUE;
            KiRequestSoftwareInterrupt(APC_LEVEL);
        }

        //
        // Swap the address space back to the parent process.
        //
//.........这里部分代码省略.........

LONG
KeSetProcess (
    IN PRKPROCESS Process,
    IN KPRIORITY Increment,
    IN BOOLEAN Wait
    )

/*++

Routine Description:

    This function sets the signal state of a proces object to Signaled
    and attempts to satisfy as many Waits as possible. The previous
    signal state of the process object is returned as the function value.

Arguments:

    Process - Supplies a pointer to a dispatcher object of type process.

    Increment - Supplies the priority increment that is to be applied
       if setting the process causes a Wait to be satisfied.

    Wait - Supplies a boolean value that signifies whether the call to
       KeSetProcess will be immediately followed by a call to one of the
       kernel Wait functions.

Return Value:

    The previous signal state of the process object.

--*/

{

    KIRQL OldIrql;
    LONG OldState;
    PRKTHREAD Thread;

    ASSERT_PROCESS(Process);
    ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);

    //
    // Raise IRQL to dispatcher level and lock dispatcher database.
    //

    KiLockDispatcherDatabase(&OldIrql);

    //
    // If the previous state of the process object is Not-Signaled and
    // the wait queue is not empty, then satisfy as many Waits as
    // possible.
    //

    OldState = Process->Header.SignalState;
    Process->Header.SignalState = 1;
    if ((OldState == 0) && (!IsListEmpty(&Process->Header.WaitListHead))) {
        KiWaitTest(Process, Increment);
    }

    //
    // If the value of the Wait argument is TRUE, then return to the
    // caller with IRQL raised and the dispatcher database locked. Else
    // release the dispatcher database lock and lower IRQL to its
    // previous value.
    //

    if (Wait) {
        Thread = KeGetCurrentThread();
        Thread->WaitNext = Wait;
        Thread->WaitIrql = OldIrql;

    } else {
        KiUnlockDispatcherDatabase(OldIrql);
    }

    //
    // Return previous signal state of process object.
    //

    return OldState;
}

VOID
KiMoveApcState (
    IN PKAPC_STATE Source,
    OUT PKAPC_STATE Destination
    )

/*++

Routine Description:

    This function moves the APC state from the source structure to the
    destination structure and reinitializes list headers as appropriate.

Arguments:

    Source - Supplies a pointer to the source APC state structure.

    Destination - Supplies a pointer to the destination APC state structure.


Return Value:

    None.

--*/

{

    PLIST_ENTRY First;
    PLIST_ENTRY Last;

    //
    // Copy the APC state from the source to the destination.
    //

    *Destination = *Source;
    if (IsListEmpty(&Source->ApcListHead[KernelMode]) != FALSE) {
        InitializeListHead(&Destination->ApcListHead[KernelMode]);

    } else {
        First = Source->ApcListHead[KernelMode].Flink;
        Last = Source->ApcListHead[KernelMode].Blink;
        Destination->ApcListHead[KernelMode].Flink = First;
        Destination->ApcListHead[KernelMode].Blink = Last;
        First->Blink = &Destination->ApcListHead[KernelMode];
        Last->Flink = &Destination->ApcListHead[KernelMode];
    }

    if (IsListEmpty(&Source->ApcListHead[UserMode]) != FALSE) {
        InitializeListHead(&Destination->ApcListHead[UserMode]);

    } else {
        First = Source->ApcListHead[UserMode].Flink;
        Last = Source->ApcListHead[UserMode].Blink;
        Destination->ApcListHead[UserMode].Flink = First;
        Destination->ApcListHead[UserMode].Blink = Last;
        First->Blink = &Destination->ApcListHead[UserMode];
        Last->Flink = &Destination->ApcListHead[UserMode];
    }

    return;
}

VOID
KeDetachProcess (
    VOID
    )

/*++

Routine Description:

    This function detaches a thread from another process' address space.

Arguments:

    None.

Return Value:

    None.

--*/

{

    KIRQL OldIrql;
    PKPROCESS Process;
    PKTHREAD Thread;

    ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);

    //
    // Raise IRQL to dispatcher level and lock dispatcher database.
    //

    Thread = KeGetCurrentThread();
    KiLockDispatcherDatabase(&OldIrql);

    //
    // If the current thread is attached to another process, then detach
    // it.
    //

    if (Thread->ApcStateIndex != 0) {

        //
        // Check if a kernel APC is in progress, the kernel APC queue is
        // not empty, or the user APC queue is not empty. If any of these
        // conditions are true, then call bug check.
        //

#if DBG

        if ((Thread->ApcState.KernelApcInProgress) ||
            (IsListEmpty(&Thread->ApcState.ApcListHead[KernelMode]) == FALSE) ||
            (IsListEmpty(&Thread->ApcState.ApcListHead[UserMode]) == FALSE)) {
            KeBugCheck(INVALID_PROCESS_DETACH_ATTEMPT);
        }

#endif

        //
        // Unbias current process stack count and check if the process should
        // be swapped out of memory.
        //

        Process = Thread->ApcState.Process;
        Process->StackCount -= 1;
        if ((Process->StackCount == 0) &&
            (IsListEmpty(&Process->ThreadListHead) == FALSE)) {
            Process->State = ProcessInTransition;
            InsertTailList(&KiProcessOutSwapListHead, &Process->SwapListEntry);
            KiSwapEvent.Header.SignalState = 1;
            if (IsListEmpty(&KiSwapEvent.Header.WaitListHead) == FALSE) {
                KiWaitTest(&KiSwapEvent, BALANCE_INCREMENT);
            }
        }

        //
        // Restore APC state and check whether the kernel APC queue contains
        // an entry. If the kernel APC queue contains an entry then set kernel
        // APC pending and request a software interrupt at APC_LEVEL.
        //

        KiMoveApcState(&Thread->SavedApcState, &Thread->ApcState);
        Thread->SavedApcState.Process = (PKPROCESS)NULL;
        Thread->ApcStatePointer[0] = &Thread->ApcState;
        Thread->ApcStatePointer[1] = &Thread->SavedApcState;
        Thread->ApcStateIndex = 0;
        if (IsListEmpty(&Thread->ApcState.ApcListHead[KernelMode]) == FALSE) {
            Thread->ApcState.KernelApcPending = TRUE;
            KiRequestSoftwareInterrupt(APC_LEVEL);
        }

        //
        // Swap the address space back to the parent process.
        //

        KiSwapProcess(Thread->ApcState.Process, Process);
    }

    //
//.........这里部分代码省略.........

DWORD
WINAPI
WsAsyncThread(IN PWSASYNCCONTEXT Context)
{
    PWSASYNCBLOCK AsyncBlock;
    PLIST_ENTRY Entry;
    HANDLE AsyncEvent = Context->AsyncEvent;
    PLIST_ENTRY ListHead = &Context->AsyncQueue;

    /* Set the blocking hook */
    WSASetBlockingHook((FARPROC)WsAsyncThreadBlockingHook);

    /* Loop */
    while (TRUE)
    {
        /* Wait for the event */
        WaitForSingleObject(AsyncEvent, INFINITE);

        /* Get the lock */
        WsAsyncLock();

        /* Process the queue */
        while (ListHead->Flink != ListHead)
        {
            /* Remove this entry and get the async block */
            Entry = RemoveHeadList(ListHead);
            AsyncBlock = CONTAINING_RECORD(Entry, WSASYNCBLOCK, AsyncQueue);

            /* Save the current task handle */
            WsAsyncCurrentTaskHandle = AsyncBlock->TaskHandle;

            /* Release the lock */
            WsAsyncUnlock();

            /* Check which operation to do */
            switch (AsyncBlock->Operation)
            {
                /* Get Host by Y */
                case WsAsyncGetHostByAddr: case WsAsyncGetHostByName:

                    /* Call the handler */
                    WsAsyncGetHost(AsyncBlock->TaskHandle,
                                   AsyncBlock->Operation,
                                   AsyncBlock->GetHost.hWnd,
                                   AsyncBlock->GetHost.wMsg,
                                   AsyncBlock->GetHost.ByWhat,
                                   AsyncBlock->GetHost.Length,
                                   AsyncBlock->GetHost.Type,
                                   AsyncBlock->GetHost.Buffer,
                                   AsyncBlock->GetHost.BufferLength);
                    break;

                /* Get Proto by Y */
                case WsAsyncGetProtoByNumber: case WsAsyncGetProtoByName:

                    /* Call the handler */
                    WsAsyncGetProto(AsyncBlock->TaskHandle,
                                    AsyncBlock->Operation,
                                    AsyncBlock->GetProto.hWnd,
                                    AsyncBlock->GetProto.wMsg,
                                    AsyncBlock->GetHost.ByWhat,
                                    AsyncBlock->GetProto.Buffer,
                                    AsyncBlock->GetProto.BufferLength);
                    break;

                /* Get Serv by Y */
                case WsAsyncGetServByPort: case WsAsyncGetServByName:

                    /* Call the handler */
                    WsAsyncGetServ(AsyncBlock->TaskHandle,
                                   AsyncBlock->Operation,
                                   AsyncBlock->GetServ.hWnd,
                                   AsyncBlock->GetServ.wMsg,
                                   AsyncBlock->GetServ.ByWhat,
                                   AsyncBlock->GetServ.Protocol,
                                   AsyncBlock->GetServ.Buffer,
                                   AsyncBlock->GetServ.BufferLength);
                    break;

                /* Termination */
                case WsAsyncTerminate:

                    /* Clean up the extra reference */
                    WSACleanup();

                    /* Free the context block */
                    WsAsyncFreeBlock(AsyncBlock);

                    /* Acquire the lock */
                    WsAsyncLock();

                    /* Loop the queue and flush it */
                    while (!IsListEmpty(ListHead))
                    {
                        Entry = RemoveHeadList(ListHead);
                        AsyncBlock = CONTAINING_RECORD(Entry,
                                                       WSASYNCBLOCK,
                                                       AsyncQueue);
                        WsAsyncFreeBlock(AsyncBlock);
                    }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                StrnCatGrow(&SectionToGetHelpOn, NULL, L"NAME", 0);
            } else {
                PrintCommandText = FALSE;
//        ASSERT(SectionToGetHelpOn == NULL);
                //
                // Get the section name for the given command name
                //
                if (ShellCommandLineGetFlag(Package, L"-section")) {
                    StrnCatGrow(&SectionToGetHelpOn, NULL, ShellCommandLineGetValue(Package, L"-section"), 0);
                } else if (ShellCommandLineGetFlag(Package, L"-usage")) {
                    StrnCatGrow(&SectionToGetHelpOn, NULL, L"NAME,SYNOPSIS", 0);
                } else if (ShellCommandLineGetFlag(Package, L"-verbose") || ShellCommandLineGetFlag(Package, L"-v")) {
                } else {
                    //
                    // The output of help <command> will display NAME, SYNOPSIS, OPTIONS, DESCRIPTION, and EXAMPLES sections.
                    //
                    StrnCatGrow (&SectionToGetHelpOn, NULL, L"NAME,SYNOPSIS,OPTIONS,DESCRIPTION,EXAMPLES", 0);
                }
            }

            if (gUnicodeCollation->StriColl(gUnicodeCollation, CommandToGetHelpOn, L"special") == 0) {
                //
                // we need info on the special characters
                //
                ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_HELP_SC_HEADER), gShellLevel3HiiHandle);
                HiiString = HiiGetString(gShellLevel3HiiHandle, STRING_TOKEN(STR_HELP_SC_DATA), NULL);
                ShellPrintEx(-1, -1, L"%s", HiiString);
                FreePool(HiiString);
                Found = TRUE;
            } else {
                CommandList = ShellCommandGetCommandList(TRUE);
//       ASSERT(CommandList != NULL);
                for ( Node = (COMMAND_LIST*)GetFirstNode(&CommandList->Link)
                             ; CommandList != NULL && !IsListEmpty(&CommandList->Link) && !IsNull(&CommandList->Link, &Node->Link)
                        ; Node = (COMMAND_LIST*)GetNextNode(&CommandList->Link, &Node->Link)
                    ) {
                    //
                    // Checking execution break flag when print multiple command help information.
                    //
                    if (ShellGetExecutionBreakFlag ()) {
                        break;
                    }
                    if ((gUnicodeCollation->MetaiMatch(gUnicodeCollation, Node->CommandString, CommandToGetHelpOn)) ||
                            (gEfiShellProtocol->GetAlias(CommandToGetHelpOn, NULL) != NULL && (gUnicodeCollation->MetaiMatch(gUnicodeCollation, Node->CommandString, (CHAR16*)(gEfiShellProtocol->GetAlias(CommandToGetHelpOn, NULL)))))) {
                        //       Print(L"found node %s\n", Node->CommandString);
                        //
                        // We have a command to look for help on.
                        //
                        Status = ShellPrintHelp(Node->CommandString, SectionToGetHelpOn, PrintCommandText);
                        if (Status == EFI_DEVICE_ERROR) {
                            ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_HELP_INV), gShellLevel3HiiHandle, Node->CommandString);
                        } else if (EFI_ERROR(Status)) {
                            ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_HELP_NF), gShellLevel3HiiHandle, Node->CommandString);
                        } else {
                            Found = TRUE;
                        }
                    }
                }

                //
                // now try to match against the dynamic command list and print help
                //
                Status = PrintDynamicCommandHelp (CommandToGetHelpOn, SectionToGetHelpOn,
                                                  PrintCommandText);
                if (!EFI_ERROR(Status)) {
                    Found = TRUE;

NTSTATUS
DokanFindStreams(PFILE_STREAM_INFORMATION StreamInfo, PDOKAN_FILE_INFO FileInfo,
                 PEVENT_CONTEXT EventContext, PDOKAN_INSTANCE DokanInstance,
                 PULONG RemainingLength) {
  PDOKAN_OPEN_INFO openInfo =
      (PDOKAN_OPEN_INFO)(UINT_PTR)FileInfo->DokanContext;
  NTSTATUS status = STATUS_SUCCESS;

  if (!DokanInstance->DokanOperations->FindStreams) {
    return STATUS_NOT_IMPLEMENTED;
  }

  if (openInfo->StreamListHead == NULL) {
    openInfo->StreamListHead = malloc(sizeof(LIST_ENTRY));
    if (openInfo->StreamListHead != NULL) {
      InitializeListHead(openInfo->StreamListHead);
    } else {
      status = STATUS_NO_MEMORY;
    }
  }

  if (status == STATUS_SUCCESS && IsListEmpty(openInfo->StreamListHead)) {
    status = DokanInstance->DokanOperations->FindStreams(
        EventContext->Operation.File.FileName, DokanFillFindStreamData,
        FileInfo);
  }

  if (status == STATUS_SUCCESS) {
    PLIST_ENTRY listHead, entry;
    ULONG entrySize;

    listHead = openInfo->StreamListHead;
    entrySize = 0;

    for (entry = listHead->Flink; entry != listHead; entry = entry->Flink) {
      PDOKAN_FIND_STREAM_DATA find =
          CONTAINING_RECORD(entry, DOKAN_FIND_STREAM_DATA, ListEntry);

      ULONG nextEntryOffset = entrySize;

      ULONG streamNameLength =
          (ULONG)wcslen(find->FindStreamData.cStreamName) * sizeof(WCHAR);
      entrySize = sizeof(FILE_STREAM_INFORMATION) + streamNameLength;
      // Must be align on a 8-byte boundary.
      entrySize = QuadAlign(entrySize);
      if (*RemainingLength < entrySize) {
        status = STATUS_BUFFER_OVERFLOW;
        break;
      }

      // Not the first entry, set the offset before filling the new entry
      if (nextEntryOffset > 0) {
        StreamInfo->NextEntryOffset = nextEntryOffset;
        StreamInfo = (PFILE_STREAM_INFORMATION)((LPBYTE)StreamInfo +
                                                StreamInfo->NextEntryOffset);
      }

      // Fill the new entry
      StreamInfo->StreamNameLength = streamNameLength;
      memcpy(StreamInfo->StreamName, find->FindStreamData.cStreamName,
             streamNameLength);
      StreamInfo->StreamSize = find->FindStreamData.StreamSize;
      StreamInfo->StreamAllocationSize = find->FindStreamData.StreamSize;
      StreamInfo->NextEntryOffset = 0;
      ALIGN_ALLOCATION_SIZE(&StreamInfo->StreamAllocationSize);

      *RemainingLength -= entrySize;
    }

    if (status != STATUS_BUFFER_OVERFLOW) {
      ClearFindStreamData(openInfo->StreamListHead);
    }

  } else {
    ClearFindStreamData(openInfo->StreamListHead);
  }

  return status;
}

static
NTSTATUS
VfatDismountVolume(
    PVFAT_IRP_CONTEXT IrpContext)
{
    PDEVICE_EXTENSION DeviceExt;
    PLIST_ENTRY NextEntry;
    PVFATFCB Fcb;
    PFILE_OBJECT FileObject;
    ULONG eocMark;
    NTSTATUS Status;

    DPRINT("VfatDismountVolume(%p)\n", IrpContext);

    DeviceExt = IrpContext->DeviceExt;
    FileObject = IrpContext->FileObject;

    /* We HAVE to be locked. Windows also allows dismount with no lock
     * but we're here mainly for 1st stage, so KISS
     */
    if (!(DeviceExt->Flags & VCB_VOLUME_LOCKED))
    {
        return STATUS_ACCESS_DENIED;
    }

    /* Race condition? */
    if (DeviceExt->Flags & VCB_DISMOUNT_PENDING)
    {
        return STATUS_VOLUME_DISMOUNTED;
    }

    /* Notify we'll dismount. Pass that point there's no reason we fail */
    FsRtlNotifyVolumeEvent(IrpContext->Stack->FileObject, FSRTL_VOLUME_DISMOUNT);

    ExAcquireResourceExclusiveLite(&DeviceExt->FatResource, TRUE);

    if (DeviceExt->VolumeFcb->Flags & VCB_CLEAR_DIRTY)
    {
        /* Set clean shutdown bit */
        Status = GetNextCluster(DeviceExt, 1, &eocMark);
        if (NT_SUCCESS(Status))
        {
            eocMark |= DeviceExt->CleanShutBitMask;
            if (NT_SUCCESS(WriteCluster(DeviceExt, 1, eocMark)))
                DeviceExt->VolumeFcb->Flags &= ~VCB_IS_DIRTY;
        }
    }

    /* Flush volume & files */
    VfatFlushVolume(DeviceExt, (PVFATFCB)FileObject->FsContext);

    /* Rebrowse the FCB in order to free them now */
    while (!IsListEmpty(&DeviceExt->FcbListHead))
    {
        NextEntry = RemoveHeadList(&DeviceExt->FcbListHead);
        Fcb = CONTAINING_RECORD(NextEntry, VFATFCB, FcbListEntry);
        vfatDestroyFCB(Fcb);
    }

    /* Mark we're being dismounted */
    DeviceExt->Flags |= VCB_DISMOUNT_PENDING;
#ifndef ENABLE_SWAPOUT
    IrpContext->DeviceObject->Vpb->Flags &= ~VPB_MOUNTED;
#endif

    ExReleaseResourceLite(&DeviceExt->FatResource);

    /* Release a few resources and quit, we're done */
    ExDeleteResourceLite(&DeviceExt->DirResource);
    ExDeleteResourceLite(&DeviceExt->FatResource);
    ObDereferenceObject(DeviceExt->FATFileObject);

    return STATUS_SUCCESS;
}