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- Add function stubs

Browse source 
- Add simple dbgprinting mechanism for easier debugging.

svn path=/trunk/; revision=26634
This commit is contained in:
Aleksey Bragin 2007-05-04 11:50:41 +00:00
parent 86d213a22d
commit 57ba31d95a
7 changed files with 196 additions and 755 deletions
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36
reactos/drivers/filesystems/npfs_new/create.c
View file

@ -15,4 +15,40 @@
/* FUNCTIONS *****************************************************************/
NTSTATUS NTAPI
NpfsCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "IRP_MJ_CREATE\n");
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
NTSTATUS NTAPI
NpfsCreateNamedPipe(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "IRP_MJ_CREATE Named Pipe\n");
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
NTSTATUS NTAPI
NpfsCleanup(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "Cleanup\n");
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
NTSTATUS NTAPI
NpfsClose(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "IRP_MJ_CLOSE\n");
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
/* EOF */

30
reactos/drivers/filesystems/npfs_new/finfo.c
View file

@ -15,4 +15,34 @@
/* FUNCTIONS *****************************************************************/
NTSTATUS NTAPI
NpfsQueryInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
FsRtlEnterFileSystem();
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "NpfsQueryInformation()\n");
/* TODO: Implement */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
FsRtlExitFileSystem();
return STATUS_SUCCESS;
}
NTSTATUS NTAPI
NpfsSetInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
FsRtlEnterFileSystem();
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "NpfsSetInformation()\n");
/* TODO: Implement */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
FsRtlExitFileSystem();
return STATUS_SUCCESS;
}
/* EOF */

29
reactos/drivers/filesystems/npfs_new/fsctrl.c
View file

@ -15,5 +15,34 @@
/* FUNCTIONS *****************************************************************/
NTSTATUS NTAPI
NpfsDirectoryControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
FsRtlEnterFileSystem();
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "NpfsDirectoryControl()\n");
/* TODO: Implement */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
FsRtlExitFileSystem();
return STATUS_SUCCESS;
}
NTSTATUS NTAPI
NpfsFileSystemControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
FsRtlEnterFileSystem();
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "NpfsFileSystemControl()\n");
/* TODO: Implement */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
FsRtlExitFileSystem();
return STATUS_SUCCESS;
}
/* EOF */

46
reactos/drivers/filesystems/npfs_new/npfs.c
View file

@ -13,9 +13,11 @@
//#define NDEBUG
#include <debug.h>
ULONG NpfsDebugLevel = NPFS_DEBUG_HIGHEST;
/* FUNCTIONS *****************************************************************/
NTSTATUS STDCALL
NTSTATUS NTAPI
DriverEntry(PDRIVER_OBJECT DriverObject,
PUNICODE_STRING RegistryPath)
{
@ -24,33 +26,25 @@ DriverEntry(PDRIVER_OBJECT DriverObject,
UNICODE_STRING DeviceName;
NTSTATUS Status;
DPRINT("Named Pipe FSD 0.0.2\n");
DPRINT("Named Pipe File System Driver v0.1\n");
ASSERT (sizeof(NPFS_CONTEXT) <= FIELD_OFFSET(IRP, Tail.Overlay.DriverContext));
ASSERT (sizeof(NPFS_WAITER_ENTRY) <= FIELD_OFFSET(IRP, Tail.Overlay.DriverContext));
DriverObject->MajorFunction[IRP_MJ_CREATE] = NpfsCreate;
DriverObject->MajorFunction[IRP_MJ_CREATE_NAMED_PIPE] =
NpfsCreateNamedPipe;
DriverObject->MajorFunction[IRP_MJ_CREATE_NAMED_PIPE] = NpfsCreateNamedPipe;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = NpfsClose;
DriverObject->MajorFunction[IRP_MJ_READ] = NpfsRead;
DriverObject->MajorFunction[IRP_MJ_WRITE] = NpfsWrite;
DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] =
NpfsQueryInformation;
DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] =
NpfsSetInformation;
DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] =
NpfsQueryVolumeInformation;
DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = NpfsQueryInformation;
DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = NpfsSetInformation;
DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = NpfsQueryVolumeInformation;
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = NpfsCleanup;
DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = NpfsFlushBuffers;
// DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] =
// NpfsDirectoryControl;
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] =
NpfsFileSystemControl;
// DriverObject->MajorFunction[IRP_MJ_QUERY_SECURITY] =
// NpfsQuerySecurity;
// DriverObject->MajorFunction[IRP_MJ_SET_SECURITY] =
// NpfsSetSecurity;
DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = NpfsDirectoryControl;
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = NpfsFileSystemControl;
//DriverObject->MajorFunction[IRP_MJ_QUERY_SECURITY] = NpfsQuerySecurity;
//DriverObject->MajorFunction[IRP_MJ_SET_SECURITY] = NpfsSetSecurity;
DriverObject->DriverUnload = NULL;
@ -86,4 +80,20 @@ DriverEntry(PDRIVER_OBJECT DriverObject,
return STATUS_SUCCESS;
}
VOID NTAPI
NpfsDbgPrint(ULONG Level, char *fmt, ...)
{
va_list args;
char str[300];
if ((NpfsDebugLevel & Level) == 0)
return;
va_start(args, fmt);
vsnprintf(str, sizeof(str), fmt, args);
va_end(args);
DbgPrint ("%4.4d: NPFS %s", PsGetCurrentProcessId(), str);
}
/* EOF */

34
reactos/drivers/filesystems/npfs_new/npfs.h
View file

@ -4,6 +4,12 @@
#include <ntifs.h>
#include <ndk/iotypes.h>
#include <stdarg.h>
#include <stdio.h>
/* Debug Levels */
#define NPFS_DEBUG_HIGHEST 0x0
typedef struct _NPFS_DEVICE_EXTENSION
{
LIST_ENTRY PipeListHead;
@ -98,25 +104,29 @@ extern NPAGED_LOOKASIDE_LIST NpfsPipeDataLookasideList;
#define PAGE_ROUND_UP(x) ( (((ULONG_PTR)x)%PAGE_SIZE) ? ((((ULONG_PTR)x)&(~(PAGE_SIZE-1)))+PAGE_SIZE) : ((ULONG_PTR)x) )
NTSTATUS STDCALL NpfsCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsCreateNamedPipe(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsCleanup(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsClose(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsCreateNamedPipe(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsCleanup(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsClose(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsRead(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsRead(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsFlushBuffers(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsFlushBuffers(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsFileSystemControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsFileSystemControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsDirectoryControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsQueryInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsSetInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsQueryInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsSetInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL NpfsQueryVolumeInformation (PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS NTAPI NpfsQueryVolumeInformation (PDEVICE_OBJECT DeviceObject, PIRP Irp);
NTSTATUS STDCALL
NTSTATUS NTAPI
DriverEntry(PDRIVER_OBJECT DriverObject,
PUNICODE_STRING RegistryPath);
VOID NTAPI
NpfsDbgPrint(ULONG Level, char *fmt, ...);
#endif /* __DRIVERS_FS_NP_NPFS_H */

734
reactos/drivers/filesystems/npfs_new/rw.c
View file

@ -43,737 +43,49 @@ VOID HexDump(PUCHAR Buffer, ULONG Length)
}
#endif
static VOID STDCALL
NpfsReadWriteCancelRoutine(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
NTSTATUS NTAPI
NpfsRead(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
PNPFS_CONTEXT Context;
PNPFS_DEVICE_EXTENSION DeviceExt;
PIO_STACK_LOCATION IoStack;
PNPFS_CCB Ccb;
BOOLEAN Complete = FALSE;
FsRtlEnterFileSystem();
DPRINT("NpfsReadWriteCancelRoutine(DeviceObject %x, Irp %x)\n", DeviceObject, Irp);
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "NpfsRead()\n");
IoReleaseCancelSpinLock(Irp->CancelIrql);
Context = (PNPFS_CONTEXT)&Irp->Tail.Overlay.DriverContext;
DeviceExt = (PNPFS_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
IoStack = IoGetCurrentIrpStackLocation(Irp);
Ccb = IoStack->FileObject->FsContext2;
KeLockMutex(&DeviceExt->PipeListLock);
ExAcquireFastMutex(&Ccb->DataListLock);
switch(IoStack->MajorFunction)
{
case IRP_MJ_READ:
if (Ccb->ReadRequestListHead.Flink != &Context->ListEntry)
{
/* we are not the first in the list, remove an complete us */
RemoveEntryList(&Context->ListEntry);
Complete = TRUE;
}
else
{
KeSetEvent(&Ccb->ReadEvent, IO_NO_INCREMENT, FALSE);
}
break;
default:
KEBUGCHECK(0);
}
ExReleaseFastMutex(&Ccb->DataListLock);
KeUnlockMutex(&DeviceExt->PipeListLock);
if (Complete)
{
Irp->IoStatus.Status = STATUS_CANCELLED;
Irp->IoStatus.Information = 0;
/* TODO: Implement */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
FsRtlExitFileSystem();
return STATUS_SUCCESS;
}
static VOID STDCALL
NpfsWaiterThread(PVOID InitContext)
NTSTATUS NTAPI
NpfsWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
PNPFS_THREAD_CONTEXT ThreadContext = (PNPFS_THREAD_CONTEXT) InitContext;
ULONG CurrentCount;
ULONG Count = 0;
PIRP Irp = NULL;
PIRP NextIrp;
NTSTATUS Status;
BOOLEAN Terminate = FALSE;
BOOLEAN Cancel = FALSE;
PIO_STACK_LOCATION IoStack = NULL;
PNPFS_CONTEXT Context;
PNPFS_CONTEXT NextContext;
PNPFS_CCB Ccb;
FsRtlEnterFileSystem();
KeLockMutex(&ThreadContext->DeviceExt->PipeListLock);
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "NpfsWrite()\n");
while (1)
{
CurrentCount = ThreadContext->Count;
KeUnlockMutex(&ThreadContext->DeviceExt->PipeListLock);
if (Irp)
{
if (Cancel)
{
Irp->IoStatus.Status = STATUS_CANCELLED;
Irp->IoStatus.Information = 0;
/* TODO: Implement */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
else
{
switch (IoStack->MajorFunction)
{
case IRP_MJ_READ:
NpfsRead(IoStack->DeviceObject, Irp);
break;
default:
KEBUGCHECK(0);
}
}
}
if (Terminate)
{
break;
}
Status = KeWaitForMultipleObjects(CurrentCount,
ThreadContext->WaitObjectArray,
WaitAny,
Executive,
KernelMode,
FALSE,
NULL,
ThreadContext->WaitBlockArray);
if (!NT_SUCCESS(Status))
{
KEBUGCHECK(0);
}
KeLockMutex(&ThreadContext->DeviceExt->PipeListLock);
Count = Status - STATUS_SUCCESS;
ASSERT (Count < CurrentCount);
if (Count > 0)
{
Irp = ThreadContext->WaitIrpArray[Count];
ThreadContext->Count--;
ThreadContext->DeviceExt->EmptyWaiterCount++;
ThreadContext->WaitObjectArray[Count] = ThreadContext->WaitObjectArray[ThreadContext->Count];
ThreadContext->WaitIrpArray[Count] = ThreadContext->WaitIrpArray[ThreadContext->Count];
Cancel = (NULL == IoSetCancelRoutine(Irp, NULL));
Context = (PNPFS_CONTEXT)&Irp->Tail.Overlay.DriverContext;
IoStack = IoGetCurrentIrpStackLocation(Irp);
FsRtlExitFileSystem();
if (Cancel)
{
Ccb = IoStack->FileObject->FsContext2;
ExAcquireFastMutex(&Ccb->DataListLock);
RemoveEntryList(&Context->ListEntry);
switch (IoStack->MajorFunction)
{
case IRP_MJ_READ:
if (!IsListEmpty(&Ccb->ReadRequestListHead))
{
/* put the next request on the wait list */
NextContext = CONTAINING_RECORD(Ccb->ReadRequestListHead.Flink, NPFS_CONTEXT, ListEntry);
ThreadContext->WaitObjectArray[ThreadContext->Count] = NextContext->WaitEvent;
NextIrp = CONTAINING_RECORD(NextContext, IRP, Tail.Overlay.DriverContext);
ThreadContext->WaitIrpArray[ThreadContext->Count] = NextIrp;
ThreadContext->Count++;
ThreadContext->DeviceExt->EmptyWaiterCount--;
}
break;
default:
KEBUGCHECK(0);
}
ExReleaseFastMutex(&Ccb->DataListLock);
}
}
else
{
/* someone has add a new wait request */
Irp = NULL;
}
if (ThreadContext->Count == 1 && ThreadContext->DeviceExt->EmptyWaiterCount >= MAXIMUM_WAIT_OBJECTS)
{
/* it exist an other thread with empty wait slots, we can remove our thread from the list */
RemoveEntryList(&ThreadContext->ListEntry);
ThreadContext->DeviceExt->EmptyWaiterCount -= MAXIMUM_WAIT_OBJECTS - 1;
Terminate = TRUE;
}
}
ExFreePool(ThreadContext);
return STATUS_SUCCESS;
}
static NTSTATUS
NpfsAddWaitingReadWriteRequest(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
NTSTATUS NTAPI
NpfsFlushBuffers(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
PLIST_ENTRY ListEntry;
PNPFS_THREAD_CONTEXT ThreadContext = NULL;
NTSTATUS Status;
HANDLE hThread;
KIRQL oldIrql;
FsRtlEnterFileSystem();
PNPFS_CONTEXT Context = (PNPFS_CONTEXT)&Irp->Tail.Overlay.DriverContext;
PNPFS_DEVICE_EXTENSION DeviceExt = (PNPFS_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "NpfsFlushBuffers()\n");
DPRINT("NpfsAddWaitingReadWriteRequest(DeviceObject %p, Irp %p)\n", DeviceObject, Irp);
KeLockMutex(&DeviceExt->PipeListLock);
ListEntry = DeviceExt->ThreadListHead.Flink;
while (ListEntry != &DeviceExt->ThreadListHead)
{
ThreadContext = CONTAINING_RECORD(ListEntry, NPFS_THREAD_CONTEXT, ListEntry);
if (ThreadContext->Count < MAXIMUM_WAIT_OBJECTS)
{
break;
}
ListEntry = ListEntry->Flink;
}
if (ListEntry == &DeviceExt->ThreadListHead)
{
ThreadContext = ExAllocatePool(NonPagedPool, sizeof(NPFS_THREAD_CONTEXT));
if (ThreadContext == NULL)
{
KeUnlockMutex(&DeviceExt->PipeListLock);
return STATUS_NO_MEMORY;
}
ThreadContext->DeviceExt = DeviceExt;
KeInitializeEvent(&ThreadContext->Event, SynchronizationEvent, FALSE);
ThreadContext->Count = 1;
ThreadContext->WaitObjectArray[0] = &ThreadContext->Event;
DPRINT("Creating a new system thread for waiting read/write requests\n");
Status = PsCreateSystemThread(&hThread,
THREAD_ALL_ACCESS,
NULL,
NULL,
NULL,
NpfsWaiterThread,
(PVOID)ThreadContext);
if (!NT_SUCCESS(Status))
{
ExFreePool(ThreadContext);
KeUnlockMutex(&DeviceExt->PipeListLock);
return Status;
}
InsertHeadList(&DeviceExt->ThreadListHead, &ThreadContext->ListEntry);
DeviceExt->EmptyWaiterCount += MAXIMUM_WAIT_OBJECTS - 1;
}
IoMarkIrpPending(Irp);
IoAcquireCancelSpinLock(&oldIrql);
if (Irp->Cancel)
{
IoReleaseCancelSpinLock(oldIrql);
Status = STATUS_CANCELLED;
}
else
{
(void)IoSetCancelRoutine(Irp, NpfsReadWriteCancelRoutine);
IoReleaseCancelSpinLock(oldIrql);
ThreadContext->WaitObjectArray[ThreadContext->Count] = Context->WaitEvent;
ThreadContext->WaitIrpArray[ThreadContext->Count] = Irp;
ThreadContext->Count++;
DeviceExt->EmptyWaiterCount--;
KeSetEvent(&ThreadContext->Event, IO_NO_INCREMENT, FALSE);
Status = STATUS_SUCCESS;
}
KeUnlockMutex(&DeviceExt->PipeListLock);
return Status;
}
NTSTATUS STDCALL
NpfsRead(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PFILE_OBJECT FileObject;
NTSTATUS Status;
NTSTATUS OriginalStatus = STATUS_SUCCESS;
PNPFS_CCB Ccb;
PNPFS_CONTEXT Context;
KEVENT Event;
ULONG Length;
ULONG Information = 0;
ULONG CopyLength;
ULONG TempLength;
BOOLEAN IsOriginalRequest = TRUE;
PVOID Buffer;
DPRINT("NpfsRead(DeviceObject %p, Irp %p)\n", DeviceObject, Irp);
if (Irp->MdlAddress == NULL)
{
DPRINT("Irp->MdlAddress == NULL\n");
Status = STATUS_UNSUCCESSFUL;
Irp->IoStatus.Information = 0;
goto done;
}
FileObject = IoGetCurrentIrpStackLocation(Irp)->FileObject;
Ccb = FileObject->FsContext2;
Context = (PNPFS_CONTEXT)&Irp->Tail.Overlay.DriverContext;
if (Ccb->OtherSide == NULL)
{
DPRINT("Pipe is NOT connected!\n");
if (Ccb->PipeState == FILE_PIPE_LISTENING_STATE)
Status = STATUS_PIPE_LISTENING;
else if (Ccb->PipeState == FILE_PIPE_DISCONNECTED_STATE)
Status = STATUS_PIPE_DISCONNECTED;
else
Status = STATUS_UNSUCCESSFUL;
Irp->IoStatus.Information = 0;
goto done;
}
if (Ccb->Data == NULL)
{
DPRINT1("Pipe is NOT readable!\n");
Status = STATUS_UNSUCCESSFUL;
Irp->IoStatus.Information = 0;
goto done;
}
ExAcquireFastMutex(&Ccb->DataListLock);
if (IoIsOperationSynchronous(Irp))
{
InsertTailList(&Ccb->ReadRequestListHead, &Context->ListEntry);
if (Ccb->ReadRequestListHead.Flink != &Context->ListEntry)
{
KeInitializeEvent(&Event, SynchronizationEvent, FALSE);
Context->WaitEvent = &Event;
ExReleaseFastMutex(&Ccb->DataListLock);
Status = KeWaitForSingleObject(&Event,
Executive,
KernelMode,
FALSE,
NULL);
if (!NT_SUCCESS(Status))
{
KEBUGCHECK(0);
}
ExAcquireFastMutex(&Ccb->DataListLock);
}
Irp->IoStatus.Information = 0;
}
else
{
KIRQL oldIrql;
if (IsListEmpty(&Ccb->ReadRequestListHead) ||
Ccb->ReadRequestListHead.Flink != &Context->ListEntry)
{
/* this is a new request */
Irp->IoStatus.Information = 0;
Context->WaitEvent = &Ccb->ReadEvent;
InsertTailList(&Ccb->ReadRequestListHead, &Context->ListEntry);
if (Ccb->ReadRequestListHead.Flink != &Context->ListEntry)
{
/* there was already a request on the list */
IoAcquireCancelSpinLock(&oldIrql);
if (Irp->Cancel)
{
IoReleaseCancelSpinLock(oldIrql);
RemoveEntryList(&Context->ListEntry);
ExReleaseFastMutex(&Ccb->DataListLock);
Status = STATUS_CANCELLED;
goto done;
}
(void)IoSetCancelRoutine(Irp, NpfsReadWriteCancelRoutine);
IoReleaseCancelSpinLock(oldIrql);
ExReleaseFastMutex(&Ccb->DataListLock);
IoMarkIrpPending(Irp);
Status = STATUS_PENDING;
goto done;
}
}
}
while (1)
{
Buffer = MmGetSystemAddressForMdl(Irp->MdlAddress);
Information = Irp->IoStatus.Information;
Length = IoGetCurrentIrpStackLocation(Irp)->Parameters.Read.Length;
ASSERT (Information <= Length);
Buffer = (PVOID)((ULONG_PTR)Buffer + Information);
Length -= Information;
Status = STATUS_SUCCESS;
while (1)
{
if (Ccb->ReadDataAvailable == 0)
{
if (Ccb->PipeState == FILE_PIPE_CONNECTED_STATE)
{
ASSERT(Ccb->OtherSide != NULL);
KeSetEvent(&Ccb->OtherSide->WriteEvent, IO_NO_INCREMENT, FALSE);
}
if (Information > 0 &&
(Ccb->Fcb->ReadMode != FILE_PIPE_BYTE_STREAM_MODE ||
Ccb->PipeState != FILE_PIPE_CONNECTED_STATE))
{
break;
}
if (Ccb->PipeState != FILE_PIPE_CONNECTED_STATE)
{
DPRINT("PipeState: %x\n", Ccb->PipeState);
Status = STATUS_PIPE_BROKEN;
break;
}
ExReleaseFastMutex(&Ccb->DataListLock);
if (IoIsOperationSynchronous(Irp))
{
/* Wait for ReadEvent to become signaled */
DPRINT("Waiting for readable data (%wZ)\n", &Ccb->Fcb->PipeName);
Status = KeWaitForSingleObject(&Ccb->ReadEvent,
UserRequest,
KernelMode,
FALSE,
NULL);
DPRINT("Finished waiting (%wZ)! Status: %x\n", &Ccb->Fcb->PipeName, Status);
ExAcquireFastMutex(&Ccb->DataListLock);
}
else
{
Context = (PNPFS_CONTEXT)&Irp->Tail.Overlay.DriverContext;
Context->WaitEvent = &Ccb->ReadEvent;
Status = NpfsAddWaitingReadWriteRequest(DeviceObject, Irp);
if (NT_SUCCESS(Status))
{
Status = STATUS_PENDING;
}
ExAcquireFastMutex(&Ccb->DataListLock);
break;
}
}
ASSERT(IoGetCurrentIrpStackLocation(Irp)->FileObject != NULL);
if (Ccb->Fcb->ReadMode == FILE_PIPE_BYTE_STREAM_MODE)
{
DPRINT("Byte stream mode\n");
/* Byte stream mode */
while (Length > 0 && Ccb->ReadDataAvailable > 0)
{
CopyLength = min(Ccb->ReadDataAvailable, Length);
if ((ULONG_PTR)Ccb->ReadPtr + CopyLength <= (ULONG_PTR)Ccb->Data + Ccb->MaxDataLength)
{
memcpy(Buffer, Ccb->ReadPtr, CopyLength);
Ccb->ReadPtr = (PVOID)((ULONG_PTR)Ccb->ReadPtr + CopyLength);
if (Ccb->ReadPtr == (PVOID)((ULONG_PTR)Ccb->Data + Ccb->MaxDataLength))
{
Ccb->ReadPtr = Ccb->Data;
}
}
else
{
TempLength = (ULONG)((ULONG_PTR)Ccb->Data + Ccb->MaxDataLength - (ULONG_PTR)Ccb->ReadPtr);
memcpy(Buffer, Ccb->ReadPtr, TempLength);
memcpy((PVOID)((ULONG_PTR)Buffer + TempLength), Ccb->Data, CopyLength - TempLength);
Ccb->ReadPtr = (PVOID)((ULONG_PTR)Ccb->Data + CopyLength - TempLength);
}
Buffer = (PVOID)((ULONG_PTR)Buffer + CopyLength);
Length -= CopyLength;
Information += CopyLength;
Ccb->ReadDataAvailable -= CopyLength;
Ccb->WriteQuotaAvailable += CopyLength;
}
if (Length == 0)
{
if (Ccb->PipeState == FILE_PIPE_CONNECTED_STATE)
{
KeSetEvent(&Ccb->OtherSide->WriteEvent, IO_NO_INCREMENT, FALSE);
}
KeResetEvent(&Ccb->ReadEvent);
break;
}
}
else
{
DPRINT("Message mode\n");
/* Message mode */
if (Ccb->ReadDataAvailable)
{
/* Truncate the message if the receive buffer is too small */
CopyLength = min(Ccb->ReadDataAvailable, Length);
memcpy(Buffer, Ccb->Data, CopyLength);
#ifndef NDEBUG
DPRINT("Length %d Buffer %x\n",CopyLength,Buffer);
HexDump((PUCHAR)Buffer, CopyLength);
#endif
Information = CopyLength;
if (Ccb->ReadDataAvailable > Length)
{
memmove(Ccb->Data, (PVOID)((ULONG_PTR)Ccb->Data + Length),
Ccb->ReadDataAvailable - Length);
Ccb->ReadDataAvailable -= Length;
Status = STATUS_MORE_ENTRIES;
}
else
{
KeResetEvent(&Ccb->ReadEvent);
if (Ccb->PipeState == FILE_PIPE_CONNECTED_STATE)
{
KeSetEvent(&Ccb->OtherSide->WriteEvent, IO_NO_INCREMENT, FALSE);
}
Ccb->ReadDataAvailable = 0;
Ccb->WriteQuotaAvailable = Ccb->MaxDataLength;
}
}
if (Information > 0)
{
break;
}
}
}
Irp->IoStatus.Information = Information;
Irp->IoStatus.Status = Status;
ASSERT(IoGetCurrentIrpStackLocation(Irp)->FileObject != NULL);
if (IoIsOperationSynchronous(Irp))
{
RemoveEntryList(&Context->ListEntry);
if (!IsListEmpty(&Ccb->ReadRequestListHead))
{
Context = CONTAINING_RECORD(Ccb->ReadRequestListHead.Flink, NPFS_CONTEXT, ListEntry);
KeSetEvent(Context->WaitEvent, IO_NO_INCREMENT, FALSE);
}
ExReleaseFastMutex(&Ccb->DataListLock);
/* TODO: Implement */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DPRINT("NpfsRead done (Status %lx)\n", Status);
return Status;
}
else
{
if (IsOriginalRequest)
{
IsOriginalRequest = FALSE;
OriginalStatus = Status;
}
if (Status == STATUS_PENDING)
{
ExReleaseFastMutex(&Ccb->DataListLock);
DPRINT("NpfsRead done (Status %lx)\n", OriginalStatus);
return OriginalStatus;
}
RemoveEntryList(&Context->ListEntry);
IoCompleteRequest(Irp, IO_NO_INCREMENT);
if (IsListEmpty(&Ccb->ReadRequestListHead))
{
ExReleaseFastMutex(&Ccb->DataListLock);
DPRINT("NpfsRead done (Status %lx)\n", OriginalStatus);
return OriginalStatus;
}
Context = CONTAINING_RECORD(Ccb->ReadRequestListHead.Flink, NPFS_CONTEXT, ListEntry);
Irp = CONTAINING_RECORD(Context, IRP, Tail.Overlay.DriverContext);
}
}
FsRtlExitFileSystem();
done:
Irp->IoStatus.Status = Status;
if (Status != STATUS_PENDING)
{
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
DPRINT("NpfsRead done (Status %lx)\n", Status);
return Status;
}
NTSTATUS STDCALL
NpfsWrite(PDEVICE_OBJECT DeviceObject,
PIRP Irp)
{
PIO_STACK_LOCATION IoStack;
PFILE_OBJECT FileObject;
PNPFS_FCB Fcb = NULL;
PNPFS_CCB Ccb = NULL;
PNPFS_CCB ReaderCcb;
PUCHAR Buffer;
NTSTATUS Status = STATUS_SUCCESS;
ULONG Length;
ULONG Offset;
ULONG Information;
ULONG CopyLength;
ULONG TempLength;
DPRINT("NpfsWrite()\n");
IoStack = IoGetCurrentIrpStackLocation(Irp);
FileObject = IoStack->FileObject;
DPRINT("FileObject %p\n", FileObject);
DPRINT("Pipe name %wZ\n", &FileObject->FileName);
Ccb = FileObject->FsContext2;
ReaderCcb = Ccb->OtherSide;
Fcb = Ccb->Fcb;
Length = IoStack->Parameters.Write.Length;
Offset = IoStack->Parameters.Write.ByteOffset.u.LowPart;
Information = 0;
if (Irp->MdlAddress == NULL)
{
DPRINT("Irp->MdlAddress == NULL\n");
Status = STATUS_UNSUCCESSFUL;
Length = 0;
goto done;
}
if (ReaderCcb == NULL)
{
DPRINT("Pipe is NOT connected!\n");
if (Ccb->PipeState == FILE_PIPE_LISTENING_STATE)
Status = STATUS_PIPE_LISTENING;
else if (Ccb->PipeState == FILE_PIPE_DISCONNECTED_STATE)
Status = STATUS_PIPE_DISCONNECTED;
else
Status = STATUS_UNSUCCESSFUL;
Length = 0;
goto done;
}
if (ReaderCcb->Data == NULL)
{
DPRINT("Pipe is NOT writable!\n");
Status = STATUS_UNSUCCESSFUL;
Length = 0;
goto done;
}
Status = STATUS_SUCCESS;
Buffer = MmGetSystemAddressForMdl (Irp->MdlAddress);
ExAcquireFastMutex(&ReaderCcb->DataListLock);
#ifndef NDEBUG
DPRINT("Length %d Buffer %x Offset %x\n",Length,Buffer,Offset);
HexDump(Buffer, Length);
#endif
while(1)
{
if (ReaderCcb->WriteQuotaAvailable == 0)
{
KeSetEvent(&ReaderCcb->ReadEvent, IO_NO_INCREMENT, FALSE);
if (Ccb->PipeState != FILE_PIPE_CONNECTED_STATE)
{
Status = STATUS_PIPE_BROKEN;
ExReleaseFastMutex(&ReaderCcb->DataListLock);
goto done;
}
ExReleaseFastMutex(&ReaderCcb->DataListLock);
DPRINT("Waiting for buffer space (%S)\n", Fcb->PipeName.Buffer);
Status = KeWaitForSingleObject(&Ccb->WriteEvent,
UserRequest,
KernelMode,
FALSE,
NULL);
DPRINT("Finished waiting (%S)! Status: %x\n", Fcb->PipeName.Buffer, Status);
/*
* It's possible that the event was signaled because the
* other side of pipe was closed.
*/
if (Ccb->PipeState != FILE_PIPE_CONNECTED_STATE)
{
DPRINT("PipeState: %x\n", Ccb->PipeState);
Status = STATUS_PIPE_BROKEN;
// ExReleaseFastMutex(&ReaderCcb->DataListLock);
goto done;
}
ExAcquireFastMutex(&ReaderCcb->DataListLock);
}
if (Fcb->WriteMode == FILE_PIPE_BYTE_STREAM_MODE)
{
DPRINT("Byte stream mode\n");
while (Length > 0 && ReaderCcb->WriteQuotaAvailable > 0)
{
CopyLength = min(Length, ReaderCcb->WriteQuotaAvailable);
if ((ULONG_PTR)ReaderCcb->WritePtr + CopyLength <= (ULONG_PTR)ReaderCcb->Data + ReaderCcb->MaxDataLength)
{
memcpy(ReaderCcb->WritePtr, Buffer, CopyLength);
ReaderCcb->WritePtr = (PVOID)((ULONG_PTR)ReaderCcb->WritePtr + CopyLength);
if ((ULONG_PTR)ReaderCcb->WritePtr == (ULONG_PTR)ReaderCcb->Data + ReaderCcb->MaxDataLength)
{
ReaderCcb->WritePtr = ReaderCcb->Data;
}
}
else
{
TempLength = (ULONG)((ULONG_PTR)ReaderCcb->Data + ReaderCcb->MaxDataLength - (ULONG_PTR)ReaderCcb->WritePtr);
memcpy(ReaderCcb->WritePtr, Buffer, TempLength);
memcpy(ReaderCcb->Data, Buffer + TempLength, CopyLength - TempLength);
ReaderCcb->WritePtr = (PVOID)((ULONG_PTR)ReaderCcb->Data + CopyLength - TempLength);
}
Buffer += CopyLength;
Length -= CopyLength;
Information += CopyLength;
ReaderCcb->ReadDataAvailable += CopyLength;
ReaderCcb->WriteQuotaAvailable -= CopyLength;
}
if (Length == 0)
{
KeSetEvent(&ReaderCcb->ReadEvent, IO_NO_INCREMENT, FALSE);
KeResetEvent(&Ccb->WriteEvent);
break;
}
}
else
{
DPRINT("Message mode\n");
if (Length > 0)
{
CopyLength = min(Length, ReaderCcb->WriteQuotaAvailable);
memcpy(ReaderCcb->Data, Buffer, CopyLength);
Information = CopyLength;
ReaderCcb->ReadDataAvailable = CopyLength;
ReaderCcb->WriteQuotaAvailable = 0;
}
if (Information > 0)
{
KeSetEvent(&ReaderCcb->ReadEvent, IO_NO_INCREMENT, FALSE);
KeResetEvent(&Ccb->WriteEvent);
break;
}
}
}
ExReleaseFastMutex(&ReaderCcb->DataListLock);
done:
Irp->IoStatus.Status = Status;
Irp->IoStatus.Information = Information;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DPRINT("NpfsWrite done (Status %lx)\n", Status);
return Status;
return STATUS_SUCCESS;
}
/* EOF */

14
reactos/drivers/filesystems/npfs_new/volume.c
View file

@ -15,5 +15,19 @@
/* FUNCTIONS ****************************************************************/
NTSTATUS NTAPI
NpfsQueryVolumeInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
FsRtlEnterFileSystem();
NpfsDbgPrint(NPFS_DEBUG_HIGHEST, "NpfsQueryVolumeInformation()\n");
/* TODO: Implement */
IoCompleteRequest(Irp, IO_NO_INCREMENT);
FsRtlExitFileSystem();
return STATUS_SUCCESS;
}
/* EOF */