PFCB
CdfsMakeRootFCB(PDEVICE_EXTENSION Vcb)
{
PFCB Fcb;
Fcb = CdfsCreateFCB(L"\\");
Fcb->Entry.DataLengthL = Vcb->CdInfo.RootSize;
Fcb->Entry.ExtentLocationL = Vcb->CdInfo.RootStart;
Fcb->Entry.FileFlags = FILE_FLAG_DIRECTORY;
Fcb->IndexNumber.QuadPart = 0LL;
Fcb->RefCount = 1;
Fcb->DirIndex = 0;
Fcb->RFCB.FileSize.QuadPart = Vcb->CdInfo.RootSize;
Fcb->RFCB.ValidDataLength.QuadPart = Vcb->CdInfo.RootSize;
Fcb->RFCB.AllocationSize.QuadPart = Vcb->CdInfo.RootSize;
CdfsFCBInitializeCache(Vcb, Fcb);
CdfsAddFCBToTable(Vcb, Fcb);
CdfsGrabFCB(Vcb, Fcb);
return(Fcb);
}
NTSTATUS
CdfsMakeFCBFromDirEntry(PVCB Vcb,
PFCB DirectoryFCB,
PWSTR LongName,
PWSTR ShortName,
PDIR_RECORD Record,
ULONG DirectorySector,
ULONG DirectoryOffset,
PFCB * fileFCB)
{
WCHAR pathName[MAX_PATH];
PFCB rcFCB;
ULONG Size;
if (LongName [0] != 0 && wcslen (DirectoryFCB->PathName) +
sizeof(WCHAR) + wcslen (LongName) > MAX_PATH)
{
return(STATUS_OBJECT_NAME_INVALID);
}
wcscpy(pathName, DirectoryFCB->PathName);
if (!CdfsFCBIsRoot(DirectoryFCB))
{
wcscat(pathName, L"\\");
}
if (LongName[0] != 0)
{
wcscat(pathName, LongName);
}
else
{
WCHAR entryName[MAX_PATH];
CdfsGetDirEntryName(Vcb, Record, entryName);
wcscat(pathName, entryName);
}
rcFCB = CdfsCreateFCB(pathName);
memcpy(&rcFCB->Entry, Record, sizeof(DIR_RECORD));
/* Copy short name into FCB */
rcFCB->ShortNameU.Length = wcslen(ShortName) * sizeof(WCHAR);
rcFCB->ShortNameU.MaximumLength = rcFCB->ShortNameU.Length;
rcFCB->ShortNameU.Buffer = rcFCB->ShortNameBuffer;
wcscpy(rcFCB->ShortNameBuffer, ShortName);
Size = rcFCB->Entry.DataLengthL;
rcFCB->RFCB.FileSize.QuadPart = Size;
rcFCB->RFCB.ValidDataLength.QuadPart = Size;
rcFCB->RFCB.AllocationSize.QuadPart = ROUND_UP(Size, BLOCKSIZE);
if (CdfsFCBIsDirectory(rcFCB))
{
CdfsFCBInitializeCache(Vcb, rcFCB);
}
rcFCB->IndexNumber.u.HighPart = DirectorySector;
rcFCB->IndexNumber.u.LowPart = DirectoryOffset;
rcFCB->RefCount++;
CdfsAddFCBToTable(Vcb, rcFCB);
*fileFCB = rcFCB;
DPRINT("%S %d %I64d\n", LongName, Size, rcFCB->RFCB.AllocationSize.QuadPart);
return(STATUS_SUCCESS);
}
static NTSTATUS
CdfsMountVolume(PDEVICE_OBJECT DeviceObject,
PIRP Irp)
{
PDEVICE_EXTENSION DeviceExt = NULL;
PDEVICE_OBJECT NewDeviceObject = NULL;
PDEVICE_OBJECT DeviceToMount;
PIO_STACK_LOCATION Stack;
PFCB Fcb = NULL;
PCCB Ccb = NULL;
PVPB Vpb;
NTSTATUS Status;
CDINFO CdInfo;
DPRINT("CdfsMountVolume() called\n");
if (DeviceObject != CdfsGlobalData->DeviceObject)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
goto ByeBye;
}
Stack = IoGetCurrentIrpStackLocation(Irp);
DeviceToMount = Stack->Parameters.MountVolume.DeviceObject;
Vpb = Stack->Parameters.MountVolume.Vpb;
Status = CdfsGetVolumeData(DeviceToMount, &CdInfo);
if (!NT_SUCCESS(Status))
{
goto ByeBye;
}
Status = IoCreateDevice(CdfsGlobalData->DriverObject,
sizeof(DEVICE_EXTENSION),
NULL,
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
DeviceToMount->Characteristics,
FALSE,
&NewDeviceObject);
if (!NT_SUCCESS(Status))
goto ByeBye;
NewDeviceObject->Flags = NewDeviceObject->Flags | DO_DIRECT_IO;
NewDeviceObject->Flags &= ~DO_VERIFY_VOLUME;
DeviceExt = (PVOID)NewDeviceObject->DeviceExtension;
RtlZeroMemory(DeviceExt,
sizeof(DEVICE_EXTENSION));
Vpb->SerialNumber = CdInfo.SerialNumber;
Vpb->VolumeLabelLength = CdInfo.VolumeLabelLength;
RtlCopyMemory(Vpb->VolumeLabel, CdInfo.VolumeLabel, CdInfo.VolumeLabelLength);
RtlCopyMemory(&DeviceExt->CdInfo, &CdInfo, sizeof(CDINFO));
NewDeviceObject->Vpb = DeviceToMount->Vpb;
DeviceExt->VolumeDevice = NewDeviceObject;
DeviceExt->StorageDevice = DeviceToMount;
DeviceExt->StorageDevice->Vpb->DeviceObject = NewDeviceObject;
DeviceExt->StorageDevice->Vpb->RealDevice = DeviceExt->StorageDevice;
DeviceExt->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
NewDeviceObject->StackSize = DeviceExt->StorageDevice->StackSize + 1;
NewDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
/* Close (and cleanup) might be called from IoCreateStreamFileObject
* but we use this resource from CdfsCleanup, therefore it should be
* initialized no later than this. */
ExInitializeResourceLite(&DeviceExt->DirResource);
DeviceExt->StreamFileObject = IoCreateStreamFileObject(NULL,
DeviceExt->StorageDevice);
Fcb = CdfsCreateFCB(NULL);
if (Fcb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
Ccb = ExAllocatePoolWithTag(NonPagedPool,
sizeof(CCB),
TAG_CCB);
if (Ccb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
RtlZeroMemory(Ccb,
sizeof(CCB));
DeviceExt->StreamFileObject->ReadAccess = TRUE;
DeviceExt->StreamFileObject->WriteAccess = FALSE;
DeviceExt->StreamFileObject->DeleteAccess = FALSE;
DeviceExt->StreamFileObject->FsContext = Fcb;
DeviceExt->StreamFileObject->FsContext2 = Ccb;
DeviceExt->StreamFileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
DeviceExt->StreamFileObject->PrivateCacheMap = NULL;
DeviceExt->StreamFileObject->Vpb = DeviceExt->Vpb;
Ccb->PtrFileObject = DeviceExt->StreamFileObject;
Fcb->FileObject = DeviceExt->StreamFileObject;
Fcb->DevExt = (PDEVICE_EXTENSION)DeviceExt->StorageDevice;
Fcb->Flags = FCB_IS_VOLUME_STREAM;
Fcb->RFCB.FileSize.QuadPart = (DeviceExt->CdInfo.VolumeSpaceSize + DeviceExt->CdInfo.VolumeOffset) * BLOCKSIZE;
Fcb->RFCB.ValidDataLength = Fcb->RFCB.AllocationSize = Fcb->RFCB.FileSize;
Fcb->Entry.ExtentLocationL = 0;
Fcb->Entry.DataLengthL = (DeviceExt->CdInfo.VolumeSpaceSize + DeviceExt->CdInfo.VolumeOffset) * BLOCKSIZE;
CcInitializeCacheMap(DeviceExt->StreamFileObject,
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
TRUE,
&(CdfsGlobalData->CacheMgrCallbacks),
Fcb);
ExInitializeResourceLite(&DeviceExt->VcbResource);
KeInitializeSpinLock(&DeviceExt->FcbListLock);
InitializeListHead(&DeviceExt->FcbListHead);
FsRtlNotifyInitializeSync(&DeviceExt->NotifySync);
InitializeListHead(&DeviceExt->NotifyList);
Status = STATUS_SUCCESS;
ByeBye:
if (!NT_SUCCESS(Status))
{
/* Cleanup */
if (DeviceExt && DeviceExt->StreamFileObject)
ObDereferenceObject(DeviceExt->StreamFileObject);
if (Fcb)
ExFreePool(Fcb);
if (NewDeviceObject)
IoDeleteDevice(NewDeviceObject);
}
DPRINT("CdfsMountVolume() done (Status: %lx)\n", Status);
return(Status);
}
