VOID DokanCompleteSetInformation(__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo) {
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status;
ULONG info = 0;
PDokanCCB ccb;
PDokanFCB fcb = NULL;
UNICODE_STRING oldFileName;
FILE_INFORMATION_CLASS infoClass;
irp = IrpEntry->Irp;
status = EventInfo->Status;
__try {
DDbgPrint("==> DokanCompleteSetInformation\n");
irpSp = IrpEntry->IrpSp;
ccb = IrpEntry->FileObject->FsContext2;
ASSERT(ccb != NULL);
KeEnterCriticalRegion();
ExAcquireResourceExclusiveLite(&ccb->Resource, TRUE);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
DokanFCBLockRW(fcb);
ccb->UserContext = EventInfo->Context;
info = EventInfo->BufferLength;
infoClass = irpSp->Parameters.SetFile.FileInformationClass;
RtlZeroMemory(&oldFileName, sizeof(UNICODE_STRING));
if (NT_SUCCESS(status)) {
if (infoClass == FileDispositionInformation) {
if (EventInfo->Operation.Delete.DeleteOnClose) {
if (!MmFlushImageSection(&fcb->SectionObjectPointers,
MmFlushForDelete)) {
DDbgPrint(" Cannot delete user mapped image\n");
status = STATUS_CANNOT_DELETE;
} else {
DokanCCBFlagsSetBit(ccb, DOKAN_DELETE_ON_CLOSE);
DokanFCBFlagsSetBit(fcb, DOKAN_DELETE_ON_CLOSE);
DDbgPrint(" FileObject->DeletePending = TRUE\n");
IrpEntry->FileObject->DeletePending = TRUE;
}
} else {
DokanCCBFlagsClearBit(ccb, DOKAN_DELETE_ON_CLOSE);
DokanFCBFlagsClearBit(fcb, DOKAN_DELETE_ON_CLOSE);
DDbgPrint(" FileObject->DeletePending = FALSE\n");
IrpEntry->FileObject->DeletePending = FALSE;
}
}
// if rename is executed, reassign the file name
if (infoClass == FileRenameInformation) {
PVOID buffer = NULL;
// this is used to inform rename in the bellow switch case
oldFileName.Buffer = fcb->FileName.Buffer;
oldFileName.Length = (USHORT)fcb->FileName.Length;
oldFileName.MaximumLength = (USHORT)fcb->FileName.Length;
// copy new file name
buffer = ExAllocatePool(EventInfo->BufferLength + sizeof(WCHAR));
if (buffer == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
ExReleaseResourceLite(&ccb->Resource);
KeLeaveCriticalRegion();
__leave;
}
fcb->FileName.Buffer = buffer;
ASSERT(fcb->FileName.Buffer != NULL);
RtlZeroMemory(fcb->FileName.Buffer,
EventInfo->BufferLength + sizeof(WCHAR));
RtlCopyMemory(fcb->FileName.Buffer, EventInfo->Buffer,
EventInfo->BufferLength);
fcb->FileName.Length = (USHORT)EventInfo->BufferLength;
fcb->FileName.MaximumLength = (USHORT)EventInfo->BufferLength;
}
}
ExReleaseResourceLite(&ccb->Resource);
KeLeaveCriticalRegion();
if (NT_SUCCESS(status)) {
switch (irpSp->Parameters.SetFile.FileInformationClass) {
case FileAllocationInformation:
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_SIZE,
FILE_ACTION_MODIFIED);
break;
case FileBasicInformation:
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_ATTRIBUTES |
FILE_NOTIFY_CHANGE_LAST_WRITE |
FILE_NOTIFY_CHANGE_LAST_ACCESS |
FILE_NOTIFY_CHANGE_CREATION,
FILE_ACTION_MODIFIED);
break;
case FileDispositionInformation:
if (IrpEntry->FileObject->DeletePending) {
if (DokanFCBFlagsIsSet(fcb, DOKAN_FILE_DIRECTORY)) {
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_DIR_NAME,
FILE_ACTION_REMOVED);
} else {
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_FILE_NAME,
FILE_ACTION_REMOVED);
}
}
break;
case FileEndOfFileInformation:
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_SIZE,
FILE_ACTION_MODIFIED);
break;
case FileLinkInformation:
// TODO: should check whether this is a directory
// TODO: should notify new link name
// DokanNotifyReportChange(vcb, ccb, FILE_NOTIFY_CHANGE_FILE_NAME,
// FILE_ACTION_ADDED);
break;
case FilePositionInformation:
// this is never used
break;
case FileRenameInformation: {
DokanNotifyReportChange0(fcb, &oldFileName,
FILE_NOTIFY_CHANGE_FILE_NAME,
FILE_ACTION_RENAMED_OLD_NAME);
// free old file name
ExFreePool(oldFileName.Buffer);
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_FILE_NAME,
FILE_ACTION_RENAMED_NEW_NAME);
} break;
case FileValidDataLengthInformation:
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_SIZE,
FILE_ACTION_MODIFIED);
break;
default:
DDbgPrint(" unknown type:%d\n",
irpSp->Parameters.SetFile.FileInformationClass);
break;
}
}
} __finally {
if(fcb)
DokanFCBUnlock(fcb);
DokanCompleteIrpRequest(irp, status, info);
DDbgPrint("<== DokanCompleteSetInformation\n");
}
}
VOID DokanCompleteWrite(__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo) {
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_SUCCESS;
PDokanCCB ccb;
PDokanFCB fcb;
PFILE_OBJECT fileObject;
fileObject = IrpEntry->FileObject;
ASSERT(fileObject != NULL);
DDbgPrint("==> DokanCompleteWrite %wZ\n", &fileObject->FileName);
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
ccb = fileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
ccb->UserContext = EventInfo->Context;
// DDbgPrint(" set Context %X\n", (ULONG)ccb->UserContext);
status = EventInfo->Status;
irp->IoStatus.Status = status;
irp->IoStatus.Information = EventInfo->BufferLength;
if (NT_SUCCESS(status)) {
//Check if file size changed
if (fcb->AdvancedFCBHeader.FileSize.QuadPart <
EventInfo->Operation.Write.CurrentByteOffset.QuadPart) {
if (!(irp->Flags & IRP_PAGING_IO)) {
DokanFCBLockRO(fcb);
}
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_SIZE,
FILE_ACTION_MODIFIED);
if (!(irp->Flags & IRP_PAGING_IO)) {
DokanFCBUnlock(fcb);
}
//Update size with new offset
InterlockedExchange64(
&fcb->AdvancedFCBHeader.FileSize.QuadPart,
EventInfo->Operation.Write.CurrentByteOffset.QuadPart);
}
DokanFCBFlagsSetBit(fcb, DOKAN_FILE_CHANGE_LAST_WRITE);
if (EventInfo->BufferLength != 0 && fileObject->Flags & FO_SYNCHRONOUS_IO &&
!(irp->Flags & IRP_PAGING_IO)) {
// update current byte offset only when synchronous IO and not paging IO
fileObject->CurrentByteOffset.QuadPart =
EventInfo->Operation.Write.CurrentByteOffset.QuadPart;
DDbgPrint(" Updated CurrentByteOffset %I64d\n",
fileObject->CurrentByteOffset.QuadPart);
}
}
DokanCompleteIrpRequest(irp, irp->IoStatus.Status, irp->IoStatus.Information);
DDbgPrint("<== DokanCompleteWrite\n");
}