VOID
DokanCompleteWrite(
__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo
)
{
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_SUCCESS;
ULONG readLength = 0;
ULONG bufferLen = 0;
PVOID buffer = NULL;
PDokanCCB ccb;
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);
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) &&
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->Write.CurrentByteOffset.QuadPart;
DDbgPrint(" Updated CurrentByteOffset %I64d\n",
fileObject->CurrentByteOffset.QuadPart);
}
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteWrite");
}
VOID DokanCompleteIrpRequest(__in PIRP Irp, __in NTSTATUS Status,
__in ULONG_PTR Info) {
if (Irp == NULL) {
DDbgPrint(" Irp is NULL, so no complete required\n");
return;
}
if (Status == -1) {
DDbgPrint(" Status is -1 which is not valid NTSTATUS\n");
Status = STATUS_INVALID_PARAMETER;
}
if (Status != STATUS_PENDING) {
Irp->IoStatus.Status = Status;
Irp->IoStatus.Information = Info;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
DokanPrintNTStatus(Status);
}
VOID
DokanCompleteFlush(
__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo
)
{
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_SUCCESS;
ULONG info = 0;
PDokanCCB ccb;
PDokanFCB fcb;
PFILE_OBJECT fileObject;
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
//FsRtlEnterFileSystem();
DDbgPrint("==> DokanCompleteFlush\n");
fileObject = irpSp->FileObject;
ccb = fileObject->FsContext2;
ASSERT(ccb != NULL);
ccb->UserContext = EventInfo->Context;
DDbgPrint(" set Context %X\n", (ULONG)ccb->UserContext);
status = EventInfo->Status;
irp->IoStatus.Status = status;
irp->IoStatus.Information = 0;
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteFlush\n");
//FsRtlExitFileSystem();
}
VOID
DokanCompleteSetSecurity(
__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo
)
{
PIRP irp;
PIO_STACK_LOCATION irpSp;
PFILE_OBJECT fileObject;
PDokanCCB ccb;
NTSTATUS status;
DDbgPrint("==> DokanCompleteSetSecurity\n");
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
fileObject = IrpEntry->FileObject;
ASSERT(fileObject != NULL);
ccb = fileObject->FsContext2;
if (ccb != NULL) {
ccb->UserContext = EventInfo->Context;
} else {
DDbgPrint(" ccb == NULL\n");
}
status = EventInfo->Status;
irp->IoStatus.Status = status;
irp->IoStatus.Information = 0;
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteSetSecurity\n");
}
NTSTATUS
DokanDispatchCleanup(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
/*++
Routine Description:
This device control dispatcher handles Cleanup IRP.
Arguments:
DeviceObject - Context for the activity.
Irp - The device control argument block.
Return Value:
NTSTATUS
--*/
{
PDokanVCB vcb;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_INVALID_PARAMETER;
PFILE_OBJECT fileObject;
PDokanCCB ccb = NULL;
PDokanFCB fcb = NULL;
PEVENT_CONTEXT eventContext;
ULONG eventLength;
//PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanCleanup");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DokanPrintFileName(fileObject);
// Cleanup must be success in any case
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL");
status = STATUS_SUCCESS;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB ||
!DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_SUCCESS;
__leave;
}
ccb = fileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
eventLength = sizeof(EVENT_CONTEXT) + fcb->FileName.Length;
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
if (fileObject->SectionObjectPointer != NULL &&
fileObject->SectionObjectPointer->DataSectionObject != NULL) {
CcFlushCache(&fcb->SectionObjectPointers, NULL, 0, NULL);
CcPurgeCacheSection(&fcb->SectionObjectPointers, NULL, 0, FALSE);
CcUninitializeCacheMap(fileObject, NULL, NULL);
}
fileObject->Flags |= FO_CLEANUP_COMPLETE;
eventContext->Context = ccb->UserContext;
//DDbgPrint(" get Context %X\n", (ULONG)ccb->UserContext);
// copy the filename to EventContext from ccb
eventContext->Cleanup.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->Cleanup.FileName, fcb->FileName.Buffer, fcb->FileName.Length);
// register this IRP to pending IRP list
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
} __finally {
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
}
DDbgPrint("<== DokanCleanup");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchSetSecurity(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
PIO_STACK_LOCATION irpSp;
PDokanVCB vcb;
PDokanDCB dcb;
PDokanCCB ccb;
PDokanFCB fcb;
NTSTATUS status = STATUS_NOT_IMPLEMENTED;
PFILE_OBJECT fileObject;
ULONG info = 0;
PSECURITY_INFORMATION securityInfo;
PSECURITY_DESCRIPTOR securityDescriptor;
PSECURITY_DESCRIPTOR selfRelativesScurityDescriptor = NULL;
ULONG securityDescLength;
ULONG eventLength;
PEVENT_CONTEXT eventContext;
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanSetSecurity\n");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB) {
DbgPrint(" DeviceExtension != VCB\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
dcb = vcb->Dcb;
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DokanPrintFileName(fileObject);
ccb = fileObject->FsContext2;
if (ccb == NULL) {
DDbgPrint(" ccb == NULL\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
fcb = ccb->Fcb;
securityInfo = &irpSp->Parameters.SetSecurity.SecurityInformation;
if (*securityInfo & OWNER_SECURITY_INFORMATION) {
DDbgPrint(" OWNER_SECURITY_INFORMATION\n");
}
if (*securityInfo & GROUP_SECURITY_INFORMATION) {
DDbgPrint(" GROUP_SECURITY_INFORMATION\n");
}
if (*securityInfo & DACL_SECURITY_INFORMATION) {
DDbgPrint(" DACL_SECURITY_INFORMATION\n");
}
if (*securityInfo & SACL_SECURITY_INFORMATION) {
DDbgPrint(" SACL_SECURITY_INFORMATION\n");
}
if (*securityInfo & LABEL_SECURITY_INFORMATION) {
DDbgPrint(" LABEL_SECURITY_INFORMATION\n");
}
securityDescriptor = irpSp->Parameters.SetSecurity.SecurityDescriptor;
// Assumes the parameter is self relative SD.
securityDescLength = RtlLengthSecurityDescriptor(securityDescriptor);
eventLength = sizeof(EVENT_CONTEXT) + securityDescLength + fcb->FileName.Length;
if (EVENT_CONTEXT_MAX_SIZE < eventLength) {
// TODO: Handle this case like DispatchWrite.
DDbgPrint(" SecurityDescriptor is too big: %d (limit %d)\n",
eventLength, EVENT_CONTEXT_MAX_SIZE);
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext->Context = ccb->UserContext;
eventContext->SetSecurity.SecurityInformation = *securityInfo;
eventContext->SetSecurity.BufferLength = securityDescLength;
eventContext->SetSecurity.BufferOffset = FIELD_OFFSET(EVENT_CONTEXT, SetSecurity.FileName[0]) +
fcb->FileName.Length + sizeof(WCHAR);
RtlCopyMemory((PCHAR)eventContext + eventContext->SetSecurity.BufferOffset,
securityDescriptor, securityDescLength);
eventContext->SetSecurity.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->SetSecurity.FileName, fcb->FileName.Buffer, fcb->FileName.Length);
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
} __finally {
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = info;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
}
DDbgPrint("<== DokanSetSecurity\n");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchQuerySecurity(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_NOT_IMPLEMENTED;
PFILE_OBJECT fileObject;
ULONG info = 0;
ULONG bufferLength;
SECURITY_DESCRIPTOR dummySecurityDesc;
ULONG descLength;
PSECURITY_DESCRIPTOR securityDesc;
PSECURITY_INFORMATION securityInfo;
PDokanFCB fcb;
PDokanDCB dcb;
PDokanVCB vcb;
PDokanCCB ccb;
ULONG eventLength;
PEVENT_CONTEXT eventContext;
ULONG flags = 0;
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanQuerySecurity\n");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB) {
DbgPrint(" DeviceExtension != VCB\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
dcb = vcb->Dcb;
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DokanPrintFileName(fileObject);
ccb = fileObject->FsContext2;
if (ccb == NULL) {
DDbgPrint(" ccb == NULL\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
fcb = ccb->Fcb;
bufferLength = irpSp->Parameters.QuerySecurity.Length;
securityInfo = &irpSp->Parameters.QuerySecurity.SecurityInformation;
if (*securityInfo & OWNER_SECURITY_INFORMATION) {
DDbgPrint(" OWNER_SECURITY_INFORMATION\n");
}
if (*securityInfo & GROUP_SECURITY_INFORMATION) {
DDbgPrint(" GROUP_SECURITY_INFORMATION\n");
}
if (*securityInfo & DACL_SECURITY_INFORMATION) {
DDbgPrint(" DACL_SECURITY_INFORMATION\n");
}
if (*securityInfo & SACL_SECURITY_INFORMATION) {
DDbgPrint(" SACL_SECURITY_INFORMATION\n");
}
if (*securityInfo & LABEL_SECURITY_INFORMATION) {
DDbgPrint(" LABEL_SECURITY_INFORMATION\n");
}
eventLength = sizeof(EVENT_CONTEXT) + fcb->FileName.Length;
eventContext = AllocateEventContext(dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
if (Irp->UserBuffer != NULL && bufferLength > 0) {
// make a MDL for UserBuffer that can be used later on another thread context
if (Irp->MdlAddress == NULL) {
status = DokanAllocateMdl(Irp, bufferLength);
if (!NT_SUCCESS(status)) {
ExFreePool(eventContext);
__leave;
}
flags = DOKAN_MDL_ALLOCATED;
}
}
eventContext->Context = ccb->UserContext;
eventContext->Security.SecurityInformation = *securityInfo;
eventContext->Security.BufferLength = bufferLength;
eventContext->Security.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->Security.FileName,
fcb->FileName.Buffer, fcb->FileName.Length);
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, flags);
} __finally {
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = info;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
}
DDbgPrint("<== DokanQuerySecurity\n");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchQueryVolumeInformation(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
NTSTATUS status = STATUS_INVALID_PARAMETER;
PIO_STACK_LOCATION irpSp;
PVOID buffer;
PFILE_OBJECT fileObject;
PDokanVCB vcb;
PDokanDCB dcb;
PDokanCCB ccb;
ULONG info = 0;
//PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanQueryVolumeInformation");
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB) {
return STATUS_INVALID_PARAMETER;
}
dcb = vcb->Dcb;
irpSp = IoGetCurrentIrpStackLocation(Irp);
buffer = Irp->AssociatedIrp.SystemBuffer;
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL");
status = STATUS_INVALID_PARAMETER;
__leave;
}
DDbgPrint(" FileName: %wZ\n", &fileObject->FileName);
ccb = fileObject->FsContext2;
// ASSERT(ccb != NULL);
switch(irpSp->Parameters.QueryVolume.FsInformationClass) {
case FileFsVolumeInformation:
DDbgPrint(" FileFsVolumeInformation");
break;
case FileFsLabelInformation:
DDbgPrint(" FileFsLabelInformation");
break;
case FileFsSizeInformation:
DDbgPrint(" FileFsSizeInformation");
break;
case FileFsDeviceInformation:
{
PFILE_FS_DEVICE_INFORMATION device;
DDbgPrint(" FileFsDeviceInformation");
device = (PFILE_FS_DEVICE_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
if (irpSp->Parameters.QueryVolume.Length < sizeof(FILE_FS_DEVICE_INFORMATION)) {
status = STATUS_BUFFER_TOO_SMALL;
info = sizeof(FILE_FS_DEVICE_INFORMATION);
__leave;
}
device->DeviceType = FILE_DEVICE_DISK;//dcb->DeviceType;
device->Characteristics = dcb->DeviceCharacteristics;
status = STATUS_SUCCESS;
info = sizeof(FILE_FS_DEVICE_INFORMATION);
__leave;
}
break;
case FileFsAttributeInformation:
DDbgPrint(" FileFsAttributeInformation");
break;
case FileFsControlInformation:
DDbgPrint(" FileFsControlInformation");
break;
case FileFsFullSizeInformation:
DDbgPrint(" FileFsFullSizeInformation");
break;
case FileFsObjectIdInformation:
DDbgPrint(" FileFsObjectIdInformation");
break;
case FileFsMaximumInformation:
DDbgPrint(" FileFsMaximumInformation");
break;
default:
break;
}
if (irpSp->Parameters.QueryVolume.FsInformationClass == FileFsVolumeInformation
|| irpSp->Parameters.QueryVolume.FsInformationClass == FileFsSizeInformation
|| irpSp->Parameters.QueryVolume.FsInformationClass == FileFsAttributeInformation
|| irpSp->Parameters.QueryVolume.FsInformationClass == FileFsFullSizeInformation) {
ULONG eventLength = sizeof(EVENT_CONTEXT);
PEVENT_CONTEXT eventContext;
if (ccb && !DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
// this memory must be freed in this {}
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, NULL);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
if (ccb) {
eventContext->Context = ccb->UserContext;
eventContext->FileFlags = ccb->Flags;
//DDbgPrint(" get Context %X\n", (ULONG)ccb->UserContext);
}
eventContext->Volume.FsInformationClass =
irpSp->Parameters.QueryVolume.FsInformationClass;
// the length which can be returned to user-mode
eventContext->Volume.BufferLength = irpSp->Parameters.QueryVolume.Length;
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
}
} __finally {
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = info;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
}
DDbgPrint("<== DokanQueryVolumeInformation");
FsRtlExitFileSystem();
}
return status;
}
VOID
DokanCompleteQuerySecurity(
__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo
)
{
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status;
PVOID buffer = NULL;
ULONG bufferLength;
ULONG info = 0;
PFILE_OBJECT fileObject;
PDokanCCB ccb;
DDbgPrint("==> DokanCompleteQuerySecurity\n");
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
if (irp->MdlAddress) {
buffer = MmGetSystemAddressForMdlSafe(irp->MdlAddress, NormalPagePriority);
}
bufferLength = irpSp->Parameters.QuerySecurity.Length;
if (EventInfo->Status == STATUS_SUCCESS &&
EventInfo->BufferLength <= bufferLength &&
buffer != NULL) {
RtlCopyMemory(buffer, EventInfo->Buffer, EventInfo->BufferLength);
info = EventInfo->BufferLength;
status = STATUS_SUCCESS;
} else if (EventInfo->Status == STATUS_BUFFER_OVERFLOW ||
(EventInfo->Status == STATUS_SUCCESS && bufferLength < EventInfo->BufferLength)) {
info = EventInfo->BufferLength;
status = STATUS_BUFFER_OVERFLOW;
} else {
info = 0;
status = EventInfo->Status;
}
if (IrpEntry->Flags & DOKAN_MDL_ALLOCATED) {
DokanFreeMdl(irp);
IrpEntry->Flags &= ~DOKAN_MDL_ALLOCATED;
}
fileObject = IrpEntry->FileObject;
ASSERT(fileObject != NULL);
ccb = fileObject->FsContext2;
if (ccb != NULL) {
ccb->UserContext = EventInfo->Context;
} else {
DDbgPrint(" ccb == NULL\n");
}
irp->IoStatus.Status = status;
irp->IoStatus.Information = info;
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteQuerySecurity\n");
}
VOID
DokanCompleteQueryInformation(
__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo
)
{
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_SUCCESS;
ULONG info = 0;
ULONG bufferLen= 0;
PVOID buffer = NULL;
PDokanCCB ccb;
//FsRtlEnterFileSystem();
DDbgPrint("==> DokanCompleteQueryInformation\n");
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
ccb = IrpEntry->FileObject->FsContext2;
ASSERT(ccb != NULL);
ccb->UserContext = EventInfo->Context;
//DDbgPrint(" set Context %X\n", (ULONG)ccb->UserContext);
// where we shold copy FileInfo to
buffer = irp->AssociatedIrp.SystemBuffer;
// available buffer size
bufferLen = irpSp->Parameters.QueryFile.Length;
// buffer is not specifed or short of size
if (bufferLen == 0 || buffer == NULL || bufferLen < EventInfo->BufferLength) {
info = 0;
status = STATUS_INSUFFICIENT_RESOURCES;
} else {
//
// we write FileInfo from user mode
//
ASSERT(buffer != NULL);
RtlZeroMemory(buffer, bufferLen);
RtlCopyMemory(buffer, EventInfo->Buffer, EventInfo->BufferLength);
// written bytes
info = EventInfo->BufferLength;
status = EventInfo->Status;
if (NT_SUCCESS(status)
&& irpSp->Parameters.QueryFile.FileInformationClass == FileAllInformation) {
PFILE_ALL_INFORMATION allInfo = (PFILE_ALL_INFORMATION)buffer;
allInfo->PositionInformation.CurrentByteOffset = IrpEntry->FileObject->CurrentByteOffset;
}
}
irp->IoStatus.Status = status;
irp->IoStatus.Information = info;
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteQueryInformation\n");
//FsRtlExitFileSystem();
}
NTSTATUS
DokanDispatchFileSystemControl(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
NTSTATUS status = STATUS_INVALID_PARAMETER;
PIO_STACK_LOCATION irpSp;
PDokanVCB vcb;
PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanFileSystemControl\n");
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
irpSp = IoGetCurrentIrpStackLocation(Irp);
switch(irpSp->MinorFunction) {
case IRP_MN_KERNEL_CALL:
DDbgPrint(" IRP_MN_KERNEL_CALL\n");
break;
case IRP_MN_LOAD_FILE_SYSTEM:
DDbgPrint(" IRP_MN_LOAD_FILE_SYSTEM\n");
break;
case IRP_MN_MOUNT_VOLUME:
{
PVPB vpb;
DDbgPrint(" IRP_MN_MOUNT_VOLUME\n");
if (irpSp->Parameters.MountVolume.DeviceObject != vcb->Dcb->DeviceObject) {
DDbgPrint(" Not DokanDiskDevice\n");
status = STATUS_INVALID_PARAMETER;
}
vpb = irpSp->Parameters.MountVolume.Vpb;
vpb->DeviceObject = vcb->DeviceObject;
vpb->RealDevice = vcb->DeviceObject;
vpb->Flags |= VPB_MOUNTED;
vpb->VolumeLabelLength = wcslen(VOLUME_LABEL) * sizeof(WCHAR);
RtlStringCchCopyW(vpb->VolumeLabel, sizeof(vpb->VolumeLabel) / sizeof(WCHAR), VOLUME_LABEL);
vpb->SerialNumber = 0x19831116;
status = STATUS_SUCCESS;
}
break;
case IRP_MN_USER_FS_REQUEST:
DDbgPrint(" IRP_MN_USER_FS_REQUEST\n");
status = DokanUserFsRequest(DeviceObject, Irp);
break;
case IRP_MN_VERIFY_VOLUME:
DDbgPrint(" IRP_MN_VERIFY_VOLUME\n");
break;
default:
DDbgPrint(" unknown %d\n", irpSp->MinorFunction);
status = STATUS_INVALID_PARAMETER;
break;
}
} __finally {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanFileSystemControl\n");
FsRtlExitFileSystem();
}
return status;
}
VOID
DokanCompleteDirectoryControl(
__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo
)
{
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_SUCCESS;
ULONG info = 0;
ULONG bufferLen= 0;
PVOID buffer = NULL;
//FsRtlEnterFileSystem();
DDbgPrint("==> DokanCompleteDirectoryControl");
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
// buffer pointer which points DirecotryInfo
if (irp->MdlAddress) {
//DDbgPrint(" use MDL Address");
buffer = MmGetSystemAddressForMdlSafe(irp->MdlAddress, NormalPagePriority);
} else {
//DDbgPrint(" use UserBuffer");
buffer = irp->UserBuffer;
}
// usable buffer size
bufferLen = irpSp->Parameters.QueryDirectory.Length;
//DDbgPrint(" !!Returning DirecotyInfo!!");
// buffer is not specified or short of length
if (bufferLen == 0 || buffer == NULL || bufferLen < EventInfo->BufferLength) {
info = 0;
status = STATUS_INSUFFICIENT_RESOURCES;
} else {
PDokanCCB ccb = IrpEntry->FileObject->FsContext2;
ULONG orgLen = irpSp->Parameters.QueryDirectory.Length;
//
// set the information recieved from user mode
//
ASSERT(buffer != NULL);
RtlZeroMemory(buffer, bufferLen);
//DDbgPrint(" copy DirectoryInfo");
RtlCopyMemory(buffer, EventInfo->Buffer, EventInfo->BufferLength);
DDbgPrint(" eventInfo->Directory.Index = %d\n", EventInfo->Directory.Index);
DDbgPrint(" eventInfo->BufferLength = %d\n", EventInfo->BufferLength);
DDbgPrint(" eventInfo->Status = %x (%d)\n", EventInfo->Status, EventInfo->Status);
// update index which specified n-th directory entry is returned
// this should be locked before writing?
ccb->Context = EventInfo->Directory.Index;
ccb->UserContext = EventInfo->Context;
//DDbgPrint(" set Context %X\n", (ULONG)ccb->UserContext);
// written bytes
//irpSp->Parameters.QueryDirectory.Length = EventInfo->BufferLength;
status = EventInfo->Status;
info = EventInfo->BufferLength;
}
if (IrpEntry->Flags & DOKAN_MDL_ALLOCATED) {
DokanFreeMdl(irp);
IrpEntry->Flags &= ~DOKAN_MDL_ALLOCATED;
}
irp->IoStatus.Status = status;
irp->IoStatus.Information = info;
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteDirectoryControl");
//FsRtlExitFileSystem();
}
NTSTATUS
DokanDispatchDirectoryControl(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
NTSTATUS status = STATUS_NOT_IMPLEMENTED;
PFILE_OBJECT fileObject;
PIO_STACK_LOCATION irpSp;
PDokanCCB ccb;
PDokanVCB vcb;
//PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanDirectoryControl");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" failed fileObject is NULL");
status = STATUS_INVALID_PARAMETER;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB ||
!DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DokanPrintFileName(fileObject);
if (irpSp->MinorFunction == IRP_MN_QUERY_DIRECTORY) {
status = DokanQueryDirectory(DeviceObject, Irp);
} else if( irpSp->MinorFunction == IRP_MN_NOTIFY_CHANGE_DIRECTORY) {
status = DokanNotifyChangeDirectory(DeviceObject, Irp);
} else {
DDbgPrint(" invalid minor function");
status = STATUS_INVALID_PARAMETER;
}
} __finally {
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
DokanPrintNTStatus(status);
DDbgPrint("<== DokanDirectoryControl");
FsRtlExitFileSystem();
}
return status;
}
VOID
DokanCompleteCreate(
__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo
)
{
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status;
ULONG info;
PDokanCCB ccb;
PDokanFCB fcb;
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
DDbgPrint("==> DokanCompleteCreate\n");
ccb = IrpEntry->FileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
DDbgPrint(" FileName:%wZ\n", &fcb->FileName);
ccb->UserContext = EventInfo->Context;
//DDbgPrint(" set Context %X\n", (ULONG)ccb->UserContext);
status = EventInfo->Status;
info = EventInfo->Create.Information;
switch (info) {
case FILE_OPENED:
DDbgPrint(" FILE_OPENED\n");
break;
case FILE_CREATED:
DDbgPrint(" FILE_CREATED\n");
break;
case FILE_OVERWRITTEN:
DDbgPrint(" FILE_OVERWRITTEN\n");
break;
case FILE_DOES_NOT_EXIST:
DDbgPrint(" FILE_DOES_NOT_EXIST\n");
break;
case FILE_EXISTS:
DDbgPrint(" FILE_EXISTS\n");
break;
default:
DDbgPrint(" info = %d\n", info);
break;
}
ExAcquireResourceExclusiveLite(&fcb->Resource, TRUE);
if (NT_SUCCESS(status) &&
(irpSp->Parameters.Create.Options & FILE_DIRECTORY_FILE ||
EventInfo->Create.Flags & DOKAN_FILE_DIRECTORY)) {
if (irpSp->Parameters.Create.Options & FILE_DIRECTORY_FILE) {
DDbgPrint(" FILE_DIRECTORY_FILE %p\n", fcb);
} else {
DDbgPrint(" DOKAN_FILE_DIRECTORY %p\n", fcb);
}
fcb->Flags |= DOKAN_FILE_DIRECTORY;
}
ExReleaseResourceLite(&fcb->Resource);
ExAcquireResourceExclusiveLite(&ccb->Resource, TRUE);
if (NT_SUCCESS(status)) {
ccb->Flags |= DOKAN_FILE_OPENED;
}
ExReleaseResourceLite(&ccb->Resource);
if (NT_SUCCESS(status)) {
if (info == FILE_CREATED) {
if (fcb->Flags & DOKAN_FILE_DIRECTORY) {
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_DIR_NAME, FILE_ACTION_ADDED);
} else {
DokanNotifyReportChange(fcb, FILE_NOTIFY_CHANGE_FILE_NAME, FILE_ACTION_ADDED);
}
}
} else {
DDbgPrint(" IRP_MJ_CREATE failed. Free CCB:%X\n", ccb);
DokanFreeCCB(ccb);
DokanFreeFCB(fcb);
}
irp->IoStatus.Status = status;
irp->IoStatus.Information = info;
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteCreate\n");
}
NTSTATUS
DokanDispatchCreate(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
/*++
Routine Description:
This device control dispatcher handles create & close IRPs.
Arguments:
DeviceObject - Context for the activity.
Irp - The device control argument block.
Return Value:
NTSTATUS
--*/
{
PDokanVCB vcb;
PDokanDCB dcb;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_INVALID_PARAMETER;
PFILE_OBJECT fileObject;
ULONG info = 0;
PEPROCESS process;
PUNICODE_STRING processImageName;
PEVENT_CONTEXT eventContext;
PFILE_OBJECT relatedFileObject;
ULONG fileNameLength = 0;
ULONG eventLength;
PDokanFCB fcb;
PDokanCCB ccb;
PWCHAR fileName;
BOOLEAN needBackSlashAfterRelatedFile = FALSE;
PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanCreate\n");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
relatedFileObject = fileObject->RelatedFileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DDbgPrint(" FileName:%wZ\n", &fileObject->FileName);
vcb = DeviceObject->DeviceExtension;
PrintIdType(vcb);
if (GetIdentifierType(vcb) != VCB) {
status = STATUS_SUCCESS;
__leave;
}
dcb = vcb->Dcb;
DDbgPrint(" IrpSp->Flags = %d\n", irpSp->Flags);
if (irpSp->Flags & SL_CASE_SENSITIVE) {
DDbgPrint(" IrpSp->Flags SL_CASE_SENSITIVE\n");
}
if (irpSp->Flags & SL_FORCE_ACCESS_CHECK) {
DDbgPrint(" IrpSp->Flags SL_FORCE_ACCESS_CHECK\n");
}
if (irpSp->Flags & SL_OPEN_PAGING_FILE) {
DDbgPrint(" IrpSp->Flags SL_OPEN_PAGING_FILE\n");
}
if (irpSp->Flags & SL_OPEN_TARGET_DIRECTORY) {
DDbgPrint(" IrpSp->Flags SL_OPEN_TARGET_DIRECTORY\n");
}
if ((fileObject->FileName.Length > sizeof(WCHAR)) &&
(fileObject->FileName.Buffer[1] == L'\\') &&
(fileObject->FileName.Buffer[0] == L'\\')) {
fileObject->FileName.Length -= sizeof(WCHAR);
RtlMoveMemory(&fileObject->FileName.Buffer[0],
&fileObject->FileName.Buffer[1],
fileObject->FileName.Length);
}
if (relatedFileObject != NULL) {
fileObject->Vpb = relatedFileObject->Vpb;
} else {
fileObject->Vpb = dcb->DeviceObject->Vpb;
}
if (relatedFileObject == NULL && fileObject->FileName.Length == 0) {
DDbgPrint(" request for FS device\n");
if (irpSp->Parameters.Create.Options & FILE_DIRECTORY_FILE) {
status = STATUS_NOT_A_DIRECTORY;
} else {
SetFileObjectForVCB(fileObject, vcb);
info = FILE_OPENED;
status = STATUS_SUCCESS;
}
__leave;
}
if (fileObject->FileName.Length > sizeof(WCHAR) &&
fileObject->FileName.Buffer[fileObject->FileName.Length/sizeof(WCHAR)-1] == L'\\') {
fileObject->FileName.Length -= sizeof(WCHAR);
}
fileNameLength = fileObject->FileName.Length;
if (relatedFileObject) {
fileNameLength += relatedFileObject->FileName.Length;
if (fileObject->FileName.Length > 0 &&
fileObject->FileName.Buffer[0] == '\\') {
DDbgPrint(" when RelatedFileObject is specified, the file name should be relative path\n");
status = STATUS_OBJECT_NAME_INVALID;
__leave;
}
if (relatedFileObject->FileName.Length > 0 &&
relatedFileObject->FileName.Buffer[relatedFileObject->FileName.Length/sizeof(WCHAR)-1] != '\\') {
needBackSlashAfterRelatedFile = TRUE;
fileNameLength += sizeof(WCHAR);
}
}
// don't open file like stream
if (!dcb->UseAltStream &&
DokanUnicodeStringChar(&fileObject->FileName, L':') != -1) {
DDbgPrint(" alternate stream\n");
status = STATUS_INVALID_PARAMETER;
info = 0;
__leave;
}
// this memory is freed by DokanGetFCB if needed
// "+ sizeof(WCHAR)" is for the last NULL character
fileName = ExAllocatePool(fileNameLength + sizeof(WCHAR));
if (fileName == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
RtlZeroMemory(fileName, fileNameLength + sizeof(WCHAR));
if (relatedFileObject != NULL) {
DDbgPrint(" RelatedFileName:%wZ\n", &relatedFileObject->FileName);
// copy the file name of related file object
RtlCopyMemory(fileName,
relatedFileObject->FileName.Buffer,
relatedFileObject->FileName.Length);
if (needBackSlashAfterRelatedFile) {
((PWCHAR)fileName)[relatedFileObject->FileName.Length/sizeof(WCHAR)] = '\\';
}
// copy the file name of fileObject
RtlCopyMemory((PCHAR)fileName +
relatedFileObject->FileName.Length +
(needBackSlashAfterRelatedFile? sizeof(WCHAR) : 0),
fileObject->FileName.Buffer,
fileObject->FileName.Length);
} else {
// if related file object is not specifed, copy the file name of file object
RtlCopyMemory(fileName,
fileObject->FileName.Buffer,
fileObject->FileName.Length);
}
fcb = DokanGetFCB(vcb, fileName, fileNameLength);
if (fcb == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
if (irpSp->Flags & SL_OPEN_PAGING_FILE) {
fcb->AdvancedFCBHeader.Flags2 |= FSRTL_FLAG2_IS_PAGING_FILE;
fcb->AdvancedFCBHeader.Flags2 &= ~FSRTL_FLAG2_SUPPORTS_FILTER_CONTEXTS;
}
ccb = DokanAllocateCCB(dcb, fcb);
if (ccb == NULL) {
DokanFreeFCB(fcb); // FileName is freed here
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
fileObject->FsContext = &fcb->AdvancedFCBHeader;
fileObject->FsContext2 = ccb;
fileObject->PrivateCacheMap = NULL;
fileObject->SectionObjectPointer = &fcb->SectionObjectPointers;
//fileObject->Flags |= FILE_NO_INTERMEDIATE_BUFFERING;
eventLength = sizeof(EVENT_CONTEXT) + fcb->FileName.Length;
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext->Context = 0;
eventContext->FileFlags |= fcb->Flags;
// copy the file name
eventContext->Create.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->Create.FileName, fcb->FileName.Buffer, fcb->FileName.Length);
eventContext->Create.FileAttributes = irpSp->Parameters.Create.FileAttributes;
eventContext->Create.CreateOptions = irpSp->Parameters.Create.Options;
eventContext->Create.DesiredAccess = irpSp->Parameters.Create.SecurityContext->DesiredAccess;
eventContext->Create.ShareAccess = irpSp->Parameters.Create.ShareAccess;
// register this IRP to waiting IPR list
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext);
} __finally {
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = info;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
}
DDbgPrint("<== DokanCreate\n");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchLock(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_INVALID_PARAMETER;
PFILE_OBJECT fileObject;
PDokanCCB ccb;
PDokanFCB fcb;
PDokanVCB vcb;
PEVENT_CONTEXT eventContext;
ULONG eventLength;
//PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanLock\n");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB ||
!DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DokanPrintFileName(fileObject);
switch(irpSp->MinorFunction) {
case IRP_MN_LOCK:
DDbgPrint(" IRP_MN_LOCK\n");
break;
case IRP_MN_UNLOCK_ALL:
DDbgPrint(" IRP_MN_UNLOCK_ALL\n");
break;
case IRP_MN_UNLOCK_ALL_BY_KEY:
DDbgPrint(" IRP_MN_UNLOCK_ALL_BY_KEY\n");
break;
case IRP_MN_UNLOCK_SINGLE:
DDbgPrint(" IRP_MN_UNLOCK_SINGLE\n");
break;
default:
DDbgPrint(" unknown function : %d\n", irpSp->MinorFunction);
break;
}
ccb = fileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
eventLength = sizeof(EVENT_CONTEXT) + fcb->FileName.Length;
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext->Context = ccb->UserContext;
DDbgPrint(" get Context %X\n", (ULONG)ccb->UserContext);
// copy file name to be locked
eventContext->Operation.Lock.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->Operation.Lock.FileName, fcb->FileName.Buffer, fcb->FileName.Length);
// parameters of Lock
eventContext->Operation.Lock.ByteOffset = irpSp->Parameters.LockControl.ByteOffset;
if (irpSp->Parameters.LockControl.Length != NULL) {
eventContext->Operation.Lock.Length.QuadPart = irpSp->Parameters.LockControl.Length->QuadPart;
} else {
DDbgPrint(" LockControl.Length = NULL\n");
}
eventContext->Operation.Lock.Key = irpSp->Parameters.LockControl.Key;
// register this IRP to waiting IRP list and make it pending status
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
} __finally {
if (status != STATUS_PENDING) {
//
// complete the Irp
//
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
}
DDbgPrint("<== DokanLock\n");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchRead(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
/*++
Routine Description:
This device control dispatcher handles read IRPs.
Arguments:
DeviceObject - Context for the activity.
Irp - The device control argument block.
Return Value:
NTSTATUS
--*/
{
PIO_STACK_LOCATION irpSp;
PFILE_OBJECT fileObject;
ULONG bufferLength;
LARGE_INTEGER byteOffset;
// PVOID buffer;
NTSTATUS status = STATUS_INVALID_PARAMETER;
ULONG readLength = 0;
PDokanCCB ccb;
PDokanFCB fcb;
PDokanVCB vcb;
PEVENT_CONTEXT eventContext;
ULONG eventLength;
//PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanRead");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL");
status = STATUS_INVALID_PARAMETER;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB ||
!DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
bufferLength = irpSp->Parameters.Read.Length;
if (irpSp->Parameters.Read.ByteOffset.LowPart == FILE_USE_FILE_POINTER_POSITION &&
irpSp->Parameters.Read.ByteOffset.HighPart == -1) {
// irpSp->Parameters.Read.ByteOffset == NULL don't need check?
DDbgPrint("use FileObject ByteOffset");
byteOffset = fileObject->CurrentByteOffset;
} else {
byteOffset = irpSp->Parameters.Read.ByteOffset;
}
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DokanPrintFileName(fileObject);
DDbgPrint(" ByteCount:%d ByteOffset:%d\n", bufferLength, byteOffset);
if (bufferLength == 0) {
status = STATUS_SUCCESS;
readLength = 0;
__leave;
}
// make a MDL for UserBuffer that can be used later on another thread context
if (Irp->MdlAddress == NULL) {
status = DokanAllocateMdl(Irp, irpSp->Parameters.Read.Length);
if (!NT_SUCCESS(status)) {
__leave;
}
}
ccb = fileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
if (fcb->Flags & DOKAN_FILE_DIRECTORY) {
DDbgPrint(" DOKAN_FILE_DIRECTORY %p\n", fcb);
status = STATUS_INVALID_PARAMETER;
__leave;
}
// length of EventContext is sum of file name length and itself
eventLength = sizeof(EVENT_CONTEXT) + fcb->FileName.Length;
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext->Context = ccb->UserContext;
//DDbgPrint(" get Context %X\n", (ULONG)ccb->UserContext);
if (Irp->Flags & IRP_PAGING_IO) {
DDbgPrint(" Paging IO");
eventContext->FileFlags |= DOKAN_PAGING_IO;
}
if (fileObject->Flags & FO_SYNCHRONOUS_IO) {
DDbgPrint(" Synchronous IO");
eventContext->FileFlags |= DOKAN_SYNCHRONOUS_IO;
}
if (Irp->Flags & IRP_NOCACHE) {
DDbgPrint(" Nocache");
eventContext->FileFlags |= DOKAN_NOCACHE;
}
// offset of file to read
eventContext->Read.ByteOffset = byteOffset;
// buffer size for read
// user-mode file system application can return this size
eventContext->Read.BufferLength = irpSp->Parameters.Read.Length;
// copy the accessed file name
eventContext->Read.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->Read.FileName, fcb->FileName.Buffer, fcb->FileName.Length);
// register this IRP to pending IPR list and make it pending status
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
} __finally {
// if IRP status is not pending, must complete current IRP
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = readLength;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
} else {
DDbgPrint(" STATUS_PENDING");
}
DDbgPrint("<== DokanRead");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchSetInformation(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
NTSTATUS status = STATUS_NOT_IMPLEMENTED;
PIO_STACK_LOCATION irpSp;
PVOID buffer;
ULONG remainingLength;
PFILE_OBJECT fileObject;
FILE_INFORMATION_CLASS fileInfo;
PDokanCCB ccb;
PDokanFCB fcb;
PDokanVCB vcb;
ULONG eventLength;
PFILE_OBJECT targetFileObject;
PEVENT_CONTEXT eventContext;
PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanSetInformationn\n");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB ||
!DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
ccb = (PDokanCCB)fileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DokanPrintFileName(fileObject);
buffer = Irp->AssociatedIrp.SystemBuffer;
switch (irpSp->Parameters.SetFile.FileInformationClass) {
case FileAllocationInformation:
DDbgPrint(" FileAllocationInformation %lld\n",
((PFILE_ALLOCATION_INFORMATION)buffer)->AllocationSize.QuadPart);
break;
case FileBasicInformation:
DDbgPrint(" FileBasicInformation\n");
break;
case FileDispositionInformation:
DDbgPrint(" FileDispositionInformation\n");
break;
case FileEndOfFileInformation:
DDbgPrint(" FileEndOfFileInformation %lld\n",
((PFILE_END_OF_FILE_INFORMATION)buffer)->EndOfFile.QuadPart);
break;
case FileLinkInformation:
DDbgPrint(" FileLinkInformation\n");
break;
case FilePositionInformation:
{
PFILE_POSITION_INFORMATION posInfo;
posInfo = (PFILE_POSITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
ASSERT(posInfo != NULL);
DDbgPrint(" FilePositionInformation %lld\n",
posInfo->CurrentByteOffset.QuadPart);
fileObject->CurrentByteOffset = posInfo->CurrentByteOffset;
status = STATUS_SUCCESS;
__leave;
}
break;
case FileRenameInformation:
DDbgPrint(" FileRenameInformation\n");
break;
case FileValidDataLengthInformation:
DDbgPrint(" FileValidDataLengthInformation\n");
break;
default:
DDbgPrint(" unknown type:%d\n", irpSp->Parameters.SetFile.FileInformationClass);
break;
}
//
// when this IRP is not handled in swich case
//
// calcurate the size of EVENT_CONTEXT
// it is sum of file name length and size of FileInformation
eventLength = sizeof(EVENT_CONTEXT) + fcb->FileName.Length +
irpSp->Parameters.SetFile.Length;
targetFileObject = irpSp->Parameters.SetFile.FileObject;
if (targetFileObject) {
DDbgPrint(" FileObject Specified %wZ\n", &(targetFileObject->FileName));
eventLength += targetFileObject->FileName.Length;
}
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext->Context = ccb->UserContext;
eventContext->SetFile.FileInformationClass =
irpSp->Parameters.SetFile.FileInformationClass;
// the size of FileInformation
eventContext->SetFile.BufferLength = irpSp->Parameters.SetFile.Length;
// the offset from begining of structure to fill FileInfo
eventContext->SetFile.BufferOffset = FIELD_OFFSET(EVENT_CONTEXT, SetFile.FileName[0]) +
fcb->FileName.Length + sizeof(WCHAR); // the last null char
// copy FileInformation
RtlCopyMemory((PCHAR)eventContext + eventContext->SetFile.BufferOffset,
Irp->AssociatedIrp.SystemBuffer,
irpSp->Parameters.SetFile.Length);
if (irpSp->Parameters.SetFile.FileInformationClass == FileRenameInformation ||
irpSp->Parameters.SetFile.FileInformationClass == FileLinkInformation) {
// We need to hanle FileRenameInformation separetly because the structure of FILE_RENAME_INFORMATION
// has HANDLE type field, which size is different in 32 bit and 64 bit environment.
// This cases problems when driver is 64 bit and user mode library is 32 bit.
PFILE_RENAME_INFORMATION renameInfo = (PFILE_RENAME_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
PDOKAN_RENAME_INFORMATION renameContext =
(PDOKAN_RENAME_INFORMATION)((PCHAR)eventContext + eventContext->SetFile.BufferOffset);
// This code assumes FILE_RENAME_INFORMATION and FILE_LINK_INFORMATION have
// the same typse and fields.
ASSERT(sizeof(FILE_RENAME_INFORMATION) == sizeof(FILE_LINK_INFORMATION));
renameContext->ReplaceIfExists = renameInfo->ReplaceIfExists;
renameContext->FileNameLength = renameInfo->FileNameLength;
RtlCopyMemory(renameContext->FileName, renameInfo->FileName, renameInfo->FileNameLength);
if (targetFileObject != NULL) {
// if Parameters.SetFile.FileObject is specified, replase FILE_RENAME_INFO's file name by
// FileObject's file name. The buffer size is already adjusted.
DDbgPrint(" renameContext->FileNameLength %d\n", renameContext->FileNameLength);
DDbgPrint(" renameContext->FileName %ws\n", renameContext->FileName);
RtlZeroMemory(renameContext->FileName, renameContext->FileNameLength);
RtlCopyMemory(renameContext->FileName, targetFileObject->FileName.Buffer, targetFileObject->FileName.Length);
renameContext->FileNameLength = targetFileObject->FileName.Length;
}
}
// copy the file name
eventContext->SetFile.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->SetFile.FileName,
fcb->FileName.Buffer,
fcb->FileName.Length);
// register this IRP to waiting IRP list and make it pending status
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
} __finally {
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
}
DDbgPrint("<== DokanSetInformation\n");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchDeviceControl(__in PDEVICE_OBJECT DeviceObject, __in PIRP Irp)
/*++
Routine Description:
This device control dispatcher handles IOCTLs.
Arguments:
DeviceObject - Context for the activity.
Irp - The device control argument block.
Return Value:
NTSTATUS
--*/
{
PDokanVCB vcb;
PDokanDCB dcb;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_NOT_IMPLEMENTED;
ULONG controlCode = 0;
ULONG outputLength = 0;
// {DCA0E0A5-D2CA-4f0f-8416-A6414657A77A}
// GUID dokanGUID = { 0xdca0e0a5, 0xd2ca, 0x4f0f, { 0x84, 0x16, 0xa6, 0x41,
// 0x46, 0x57, 0xa7, 0x7a } };
__try {
Irp->IoStatus.Information = 0;
irpSp = IoGetCurrentIrpStackLocation(Irp);
outputLength = irpSp->Parameters.DeviceIoControl.OutputBufferLength;
controlCode = irpSp->Parameters.DeviceIoControl.IoControlCode;
if (controlCode != IOCTL_EVENT_WAIT && controlCode != IOCTL_EVENT_INFO &&
controlCode != IOCTL_KEEPALIVE) {
DDbgPrint("==> DokanDispatchIoControl\n");
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
}
if (DeviceObject->DriverObject == NULL ||
DeviceObject->ReferenceCount < 0) {
status = STATUS_DEVICE_DOES_NOT_EXIST;
__leave;
}
vcb = DeviceObject->DeviceExtension;
PrintIdType(vcb);
if (GetIdentifierType(vcb) == DGL) {
status = GlobalDeviceControl(DeviceObject, Irp);
__leave;
} else if (GetIdentifierType(vcb) == DCB) {
status = DiskDeviceControlWithLock(DeviceObject, Irp);
__leave;
} else if (GetIdentifierType(vcb) != VCB) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
dcb = vcb->Dcb;
switch (irpSp->Parameters.DeviceIoControl.IoControlCode) {
case IOCTL_EVENT_WAIT:
DDbgPrint(" IOCTL_EVENT_WAIT\n");
status = DokanRegisterPendingIrpForEvent(DeviceObject, Irp);
break;
case IOCTL_EVENT_INFO:
// DDbgPrint(" IOCTL_EVENT_INFO\n");
status = DokanCompleteIrp(DeviceObject, Irp);
break;
case IOCTL_EVENT_RELEASE:
DDbgPrint(" IOCTL_EVENT_RELEASE\n");
status = DokanEventRelease(DeviceObject, Irp);
break;
case IOCTL_EVENT_WRITE:
DDbgPrint(" IOCTL_EVENT_WRITE\n");
status = DokanEventWrite(DeviceObject, Irp);
break;
case IOCTL_KEEPALIVE:
DDbgPrint(" IOCTL_KEEPALIVE\n");
if (IsFlagOn(vcb->Flags, VCB_MOUNTED)) {
ExEnterCriticalRegionAndAcquireResourceExclusive(&dcb->Resource);
DokanUpdateTimeout(&dcb->TickCount, DOKAN_KEEPALIVE_TIMEOUT);
ExReleaseResourceAndLeaveCriticalRegion(&dcb->Resource);
status = STATUS_SUCCESS;
} else {
DDbgPrint(" device is not mounted\n");
status = STATUS_INSUFFICIENT_RESOURCES;
}
break;
case IOCTL_RESET_TIMEOUT:
status = DokanResetPendingIrpTimeout(DeviceObject, Irp);
break;
case IOCTL_GET_ACCESS_TOKEN:
status = DokanGetAccessToken(DeviceObject, Irp);
break;
default: {
ULONG baseCode = DEVICE_TYPE_FROM_CTL_CODE(
irpSp->Parameters.DeviceIoControl.IoControlCode);
status = STATUS_NOT_IMPLEMENTED;
// In case of IOCTL_STORAGE_BASE or IOCTL_DISK_BASE OR
// FILE_DEVICE_NETWORK_FILE_SYSTEM or MOUNTDEVCONTROLTYPE ioctl type, pass
// to DiskDeviceControl to avoid code duplication
// TODO: probably not the best way to pass down Irp...
if (baseCode == IOCTL_STORAGE_BASE || baseCode == IOCTL_DISK_BASE ||
baseCode == FILE_DEVICE_NETWORK_FILE_SYSTEM ||
baseCode == MOUNTDEVCONTROLTYPE) {
status = DiskDeviceControlWithLock(dcb->DeviceObject, Irp);
}
if (status == STATUS_NOT_IMPLEMENTED) {
PrintUnknownDeviceIoctlCode(
irpSp->Parameters.DeviceIoControl.IoControlCode);
}
} break;
} // switch IoControlCode
} __finally {
if (status != STATUS_PENDING) {
if (IsDeletePending(DeviceObject)) {
DDbgPrint(" DeviceObject is invalid, so prevent BSOD");
status = STATUS_DEVICE_REMOVED;
}
DokanCompleteIrpRequest(Irp, status, Irp->IoStatus.Information);
}
if (controlCode != IOCTL_EVENT_WAIT && controlCode != IOCTL_EVENT_INFO &&
controlCode != IOCTL_KEEPALIVE) {
DokanPrintNTStatus(status);
DDbgPrint("<== DokanDispatchIoControl\n");
}
}
return status;
}
NTSTATUS
DokanDispatchWrite(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
PIO_STACK_LOCATION irpSp;
PFILE_OBJECT fileObject;
NTSTATUS status =STATUS_INVALID_PARAMETER;
PEVENT_CONTEXT eventContext;
ULONG eventLength;
PDokanCCB ccb;
PDokanFCB fcb;
PDokanVCB vcb;
PVOID buffer;
ULONG bufferLength;
//PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanWrite");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL");
status = STATUS_INVALID_PARAMETER;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB ||
!DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
DokanPrintFileName(fileObject);
ccb = fileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
if (fcb->Flags & DOKAN_FILE_DIRECTORY) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
if (irpSp->Parameters.Write.Length == 0) {
status = STATUS_SUCCESS;
__leave;
}
if (Irp->MdlAddress) {
DDbgPrint(" use MdlAddress");
buffer = MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
} else {
DDbgPrint(" use UserBuffer");
buffer = Irp->UserBuffer;
}
if (buffer == NULL) {
DDbgPrint(" buffer == NULL");
status = STATUS_INVALID_PARAMETER;
__leave;
}
// the length of EventContext is sum of length to write and length of file name
eventLength = sizeof(EVENT_CONTEXT)
+ irpSp->Parameters.Write.Length
+ fcb->FileName.Length;
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
// no more memory!
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext->Context = ccb->UserContext;
//DDbgPrint(" get Context %X\n", (ULONG)ccb->UserContext);
// When the length is bigger than usual event notitfication buffer,
// saves pointer in DiverContext to copy EventContext after allocating
// more bigger memory.
Irp->Tail.Overlay.DriverContext[DRIVER_CONTEXT_EVENT] = eventContext;
if (Irp->Flags & IRP_PAGING_IO) {
DDbgPrint(" Paging IO");
eventContext->FileFlags |= DOKAN_PAGING_IO;
}
if (fileObject->Flags & FO_SYNCHRONOUS_IO) {
DDbgPrint(" Synchronous IO");
eventContext->FileFlags |= DOKAN_SYNCHRONOUS_IO;
}
// offset of file to write
eventContext->Write.ByteOffset = irpSp->Parameters.Write.ByteOffset;
if (irpSp->Parameters.Write.ByteOffset.LowPart == FILE_WRITE_TO_END_OF_FILE
&& irpSp->Parameters.Write.ByteOffset.HighPart == -1) {
eventContext->FileFlags |= DOKAN_WRITE_TO_END_OF_FILE;
DDbgPrint(" WriteOffset = end of file");
}
if ((fileObject->Flags & FO_SYNCHRONOUS_IO) &&
((irpSp->Parameters.Write.ByteOffset.LowPart == FILE_USE_FILE_POINTER_POSITION) &&
(irpSp->Parameters.Write.ByteOffset.HighPart == -1))) {
// NOTE:
// http://msdn.microsoft.com/en-us/library/ms795960.aspx
// Do not check IrpSp->Parameters.Write.ByteOffset.QuadPart == 0
// Probably the document is wrong.
eventContext->Write.ByteOffset.QuadPart = fileObject->CurrentByteOffset.QuadPart;
}
// the size of buffer to write
eventContext->Write.BufferLength = irpSp->Parameters.Write.Length;
// the offset from the begining of structure
// the contents to write will be copyed to this offset
eventContext->Write.BufferOffset = FIELD_OFFSET(EVENT_CONTEXT, Write.FileName[0]) +
fcb->FileName.Length + sizeof(WCHAR); // adds last null char
// copies the content to write to EventContext
RtlCopyMemory((PCHAR)eventContext + eventContext->Write.BufferOffset,
buffer, irpSp->Parameters.Write.Length);
// copies file name
eventContext->Write.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->Write.FileName, fcb->FileName.Buffer, fcb->FileName.Length);
// When eventlength is less than event notification buffer,
// returns it to user-mode using pending event.
if (eventLength <= EVENT_CONTEXT_MAX_SIZE) {
DDbgPrint(" Offset %d:%d, Length %d\n",
irpSp->Parameters.Write.ByteOffset.HighPart,
irpSp->Parameters.Write.ByteOffset.LowPart,
irpSp->Parameters.Write.Length);
// EventContext is no longer needed, clear it
Irp->Tail.Overlay.DriverContext[DRIVER_CONTEXT_EVENT] = 0;
// register this IRP to IRP waiting list and make it pending status
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
// Resuests bigger memory
// eventContext will be freed later using Irp->Tail.Overlay.DriverContext[DRIVER_CONTEXT_EVENT]
} else {
// the length at lest file name can be stored
ULONG requestContextLength = max(sizeof(EVENT_CONTEXT), eventContext->Write.BufferOffset);
PEVENT_CONTEXT requestContext = AllocateEventContext(vcb->Dcb, Irp, requestContextLength, ccb);
// no more memory!
if (requestContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
Irp->Tail.Overlay.DriverContext[DRIVER_CONTEXT_EVENT] = 0;
DokanFreeEventContext(eventContext);
__leave;
}
DDbgPrint(" Offset %d:%d, Length %d (request)\n",
irpSp->Parameters.Write.ByteOffset.HighPart,
irpSp->Parameters.Write.ByteOffset.LowPart,
irpSp->Parameters.Write.Length);
// copies from begining of EventContext to the end of file name
RtlCopyMemory(requestContext, eventContext, eventContext->Write.BufferOffset);
// puts actual size of RequestContext
requestContext->Length = requestContextLength;
// requsts enough size to copy EventContext
requestContext->Write.RequestLength = eventLength;
// regiters this IRP to IRP wainting list and make it pending status
status = DokanRegisterPendingIrp(DeviceObject, Irp, requestContext, 0);
}
} __finally {
// if status of IRP is not pending, must complete current IRP
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
} else {
DDbgPrint(" STATUS_PENDING");
}
DDbgPrint("<== DokanWrite");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchQueryInformation(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
NTSTATUS status = STATUS_NOT_IMPLEMENTED;
PIO_STACK_LOCATION irpSp;
PVOID buffer;
ULONG remainingLength;
PFILE_OBJECT fileObject;
FILE_INFORMATION_CLASS fileInfo;
PDokanCCB ccb;
PDokanFCB fcb;
PDokanVCB vcb;
ULONG info = 0;
ULONG eventLength;
PEVENT_CONTEXT eventContext;
PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanQueryInformation\n");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
DDbgPrint(" FileInfoClass %d\n", irpSp->Parameters.QueryFile.FileInformationClass);
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL\n");
status = STATUS_INVALID_PARAMETER;
__leave;
}
DokanPrintFileName(fileObject);
/*
if (fileObject->FsContext2 == NULL &&
fileObject->FileName.Length == 0) {
// volume open?
status = STATUS_SUCCESS;
__leave;
}*/
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB ||
!DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
ccb = (PDokanCCB)fileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
switch (irpSp->Parameters.QueryFile.FileInformationClass) {
case FileBasicInformation:
DDbgPrint(" FileBasicInformation\n");
break;
case FileInternalInformation:
DDbgPrint(" FileInternalInformation\n");
break;
case FileEaInformation:
DDbgPrint(" FileEaInformation\n");
break;
case FileStandardInformation:
DDbgPrint(" FileStandardInformation\n");
break;
case FileAllInformation:
DDbgPrint(" FileAllInformation\n");
break;
case FileAlternateNameInformation:
DDbgPrint(" FileAlternateNameInformation\n");
break;
case FileAttributeTagInformation:
DDbgPrint(" FileAttributeTagInformation\n");
break;
case FileCompressionInformation:
DDbgPrint(" FileCompressionInformation\n");
break;
case FileNameInformation:
{
PFILE_NAME_INFORMATION nameInfo;
DDbgPrint(" FileNameInformation\n");
if (irpSp->Parameters.QueryFile.Length < sizeof(FILE_NAME_INFORMATION)
+ fcb->FileName.Length) {
status = STATUS_INSUFFICIENT_RESOURCES;
} else {
nameInfo = (PFILE_NAME_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
ASSERT(nameInfo != NULL);
nameInfo->FileNameLength = fcb->FileName.Length;
RtlCopyMemory(nameInfo->FileName, fcb->FileName.Buffer, fcb->FileName.Length);
info = FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]) + fcb->FileName.Length;
status = STATUS_SUCCESS;
}
__leave;
}
break;
case FileNetworkOpenInformation:
DDbgPrint(" FileNetworkOpenInformation\n");
break;
case FilePositionInformation:
{
PFILE_POSITION_INFORMATION posInfo;
DDbgPrint(" FilePositionInformation\n");
if (irpSp->Parameters.QueryFile.Length < sizeof(FILE_POSITION_INFORMATION)) {
status = STATUS_INSUFFICIENT_RESOURCES;
} else {
posInfo = (PFILE_POSITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
ASSERT(posInfo != NULL);
RtlZeroMemory(posInfo, sizeof(FILE_POSITION_INFORMATION));
// set the current file offset
posInfo->CurrentByteOffset = fileObject->CurrentByteOffset;
info = sizeof(FILE_POSITION_INFORMATION);
status = STATUS_SUCCESS;
}
__leave;
}
break;
case FileStreamInformation:
DDbgPrint(" FileStreamInformation\n");
break;
default:
DDbgPrint(" unknown type:%d\n", irpSp->Parameters.QueryFile.FileInformationClass);
break;
}
// if it is not treadted in swich case
// calculate the length of EVENT_CONTEXT
// sum of it's size and file name length
eventLength = sizeof(EVENT_CONTEXT) + fcb->FileName.Length;
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext->Context = ccb->UserContext;
//DDbgPrint(" get Context %X\n", (ULONG)ccb->UserContext);
eventContext->File.FileInformationClass =
irpSp->Parameters.QueryFile.FileInformationClass;
// bytes length which is able to be returned
eventContext->File.BufferLength = irpSp->Parameters.QueryFile.Length;
// copy file name to EventContext from FCB
eventContext->File.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->File.FileName,
fcb->FileName.Buffer,
fcb->FileName.Length);
// register this IRP to pending IPR list
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
} __finally {
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = info;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
}
DDbgPrint("<== DokanQueryInformation\n");
FsRtlExitFileSystem();
}
return status;
}
NTSTATUS
DokanDispatchFlush(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
PIO_STACK_LOCATION irpSp;
PFILE_OBJECT fileObject;
PVOID buffer;
NTSTATUS status = STATUS_INVALID_PARAMETER;
PDokanFCB fcb;
PDokanCCB ccb;
PDokanVCB vcb;
PEVENT_CONTEXT eventContext;
ULONG eventLength;
PAGED_CODE();
__try {
FsRtlEnterFileSystem();
DDbgPrint("==> DokanFlush\n");
irpSp = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpSp->FileObject;
if (fileObject == NULL) {
DDbgPrint(" fileObject == NULL\n");
status = STATUS_SUCCESS;
__leave;
}
vcb = DeviceObject->DeviceExtension;
if (GetIdentifierType(vcb) != VCB ||
!DokanCheckCCB(vcb->Dcb, fileObject->FsContext2)) {
status = STATUS_SUCCESS;
__leave;
}
DokanPrintFileName(fileObject);
ccb = fileObject->FsContext2;
ASSERT(ccb != NULL);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
eventLength = sizeof(EVENT_CONTEXT) + fcb->FileName.Length;
eventContext = AllocateEventContext(vcb->Dcb, Irp, eventLength, ccb);
if (eventContext == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
eventContext->Context = ccb->UserContext;
DDbgPrint(" get Context %X\n", (ULONG)ccb->UserContext);
// copy file name to be flushed
eventContext->Flush.FileNameLength = fcb->FileName.Length;
RtlCopyMemory(eventContext->Flush.FileName, fcb->FileName.Buffer, fcb->FileName.Length);
CcUninitializeCacheMap(fileObject, NULL, NULL);
//fileObject->Flags &= FO_CLEANUP_COMPLETE;
// register this IRP to waiting IRP list and make it pending status
status = DokanRegisterPendingIrp(DeviceObject, Irp, eventContext, 0);
} __finally {
// if status is not pending, must complete current IRPs
if (status != STATUS_PENDING) {
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
} else {
DDbgPrint(" STATUS_PENDING\n");
}
DDbgPrint("<== DokanFlush\n");
FsRtlExitFileSystem();
}
return status;
}
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;
UNICODE_STRING oldFileName;
FILE_INFORMATION_CLASS infoClass;
__try {
DDbgPrint("==> DokanCompleteSetInformation\n");
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
ccb = IrpEntry->FileObject->FsContext2;
ASSERT(ccb != NULL);
ExAcquireResourceExclusiveLite(&ccb->Resource, TRUE);
fcb = ccb->Fcb;
ASSERT(fcb != NULL);
ccb->UserContext = EventInfo->Context;
status = EventInfo->Status;
info = EventInfo->BufferLength;
infoClass = irpSp->Parameters.SetFile.FileInformationClass;
RtlZeroMemory(&oldFileName, sizeof(UNICODE_STRING));
if (NT_SUCCESS(status)) {
if (infoClass == FileDispositionInformation) {
if (EventInfo->Delete.DeleteOnClose) {
if (!MmFlushImageSection(
&fcb->SectionObjectPointers,
MmFlushForDelete)) {
DDbgPrint(" Cannot delete user mapped image\n");
status = STATUS_CANNOT_DELETE;
} else {
ccb->Flags |= DOKAN_DELETE_ON_CLOSE;
fcb->Flags |= DOKAN_DELETE_ON_CLOSE;
DDbgPrint(" FileObject->DeletePending = TRUE\n");
IrpEntry->FileObject->DeletePending = TRUE;
}
} else {
ccb->Flags &= ~DOKAN_DELETE_ON_CLOSE;
fcb->Flags &= ~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;
ExAcquireResourceExclusiveLite(&fcb->Resource, TRUE);
// 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(&fcb->Resource);
ExReleaseResourceLite(&ccb->Resource);
__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(&fcb->Resource);
}
}
ExReleaseResourceLite(&ccb->Resource);
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 (fcb->Flags & 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 {
irp->IoStatus.Status = status;
irp->IoStatus.Information = info;
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteSetInformation\n");
}
}
VOID
DokanCompleteQueryVolumeInformation(
__in PIRP_ENTRY IrpEntry,
__in PEVENT_INFORMATION EventInfo
)
{
PIRP irp;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_SUCCESS;
ULONG info = 0;
ULONG bufferLen= 0;
PVOID buffer = NULL;
PDokanCCB ccb;
//FsRtlEnterFileSystem();
DDbgPrint("==> DokanCompleteQueryVolumeInformation");
irp = IrpEntry->Irp;
irpSp = IrpEntry->IrpSp;
ccb = IrpEntry->FileObject->FsContext2;
//ASSERT(ccb != NULL);
// does not save Context!!
// ccb->UserContext = EventInfo->Context;
// buffer which is used to copy VolumeInfo
buffer = irp->AssociatedIrp.SystemBuffer;
// available buffer size to inform
bufferLen = irpSp->Parameters.QueryVolume.Length;
// if buffer is invalid or short of length
if (bufferLen == 0 || buffer == NULL || bufferLen < EventInfo->BufferLength) {
info = 0;
status = STATUS_INSUFFICIENT_RESOURCES;
} else {
// copy the information from user-mode to specified buffer
ASSERT(buffer != NULL);
RtlZeroMemory(buffer, bufferLen);
RtlCopyMemory(buffer, EventInfo->Buffer, EventInfo->BufferLength);
// the written length
info = EventInfo->BufferLength;
status = EventInfo->Status;
}
irp->IoStatus.Status = status;
irp->IoStatus.Information = info;
IoCompleteRequest(irp, IO_NO_INCREMENT);
DokanPrintNTStatus(status);
DDbgPrint("<== DokanCompleteQueryVolumeInformation");
//FsRtlExitFileSystem();
}
