fscntrl.cpp File Reference

#include "udffs.h"

Include dependency graph for fscntrl.cpp:

Go to the source code of this file.

Macros
#define	UDF_BUG_CHECK_ID   UDF_FILE_FS_CONTROL
#define	DWN_MAX_CFG_FILE_SIZE   0x10000

Functions
NTSTATUS	UDFBlankMount (IN PVCB Vcb)
PDIR_INDEX_HDR	UDFDirIndexAlloc (IN uint_di i)
NTSTATUS NTAPI	UDFFSControl (PDEVICE_OBJECT DeviceObject, PIRP Irp)
NTSTATUS NTAPI	UDFCommonFSControl (PtrUDFIrpContext PtrIrpContext, PIRP Irp)
NTSTATUS NTAPI	UDFUserFsCtrlRequest (PtrUDFIrpContext IrpContext, PIRP Irp)
NTSTATUS NTAPI	UDFMountVolume (IN PtrUDFIrpContext PtrIrpContext, IN PIRP Irp)
NTSTATUS	UDFStartEjectWaiter (IN PVCB Vcb)
NTSTATUS	UDFCompleteMount (IN PVCB Vcb)
VOID	UDFCloseResidual (IN PVCB Vcb)
VOID	UDFCleanupVCB (IN PVCB Vcb)
VOID	UDFScanForDismountedVcb (IN PtrUDFIrpContext IrpContext)
NTSTATUS	UDFIsVolumeMounted (IN PtrUDFIrpContext IrpContext, IN PIRP Irp)
NTSTATUS	UDFGetStatistics (IN PtrUDFIrpContext IrpContext, IN PIRP Irp)
NTSTATUS	UDFIsPathnameValid (IN PtrUDFIrpContext IrpContext, IN PIRP Irp)
NTSTATUS	UDFLockVolume (IN PtrUDFIrpContext IrpContext, IN PIRP Irp, IN ULONG PID)
NTSTATUS	UDFUnlockVolume (IN PtrUDFIrpContext IrpContext, IN PIRP Irp, IN ULONG PID)
NTSTATUS	UDFDismountVolume (IN PtrUDFIrpContext IrpContext, IN PIRP Irp)
NTSTATUS	UDFGetVolumeBitmap (IN PtrUDFIrpContext IrpContext, IN PIRP Irp)
NTSTATUS	UDFGetRetrievalPointers (IN PtrUDFIrpContext IrpContext, IN PIRP Irp, IN ULONG Special)
NTSTATUS	UDFIsVolumeDirty (IN PtrUDFIrpContext IrpContext, IN PIRP Irp)
NTSTATUS	UDFInvalidateVolumes (IN PtrUDFIrpContext IrpContext, IN PIRP Irp)

Macro Definition Documentation

DWN_MAX_CFG_FILE_SIZE

#define DWN_MAX_CFG_FILE_SIZE   0x10000

UDF_BUG_CHECK_ID

#define UDF_BUG_CHECK_ID   UDF_FILE_FS_CONTROL

Definition at line 23 of file fscntrl.cpp.

Function Documentation

UDFBlankMount()

NTSTATUS UDFBlankMount

(

IN PVCB

Vcb

)

Definition at line 1212 of file fscntrl.cpp.

{
    NTSTATUS                    RC;// = STATUS_SUCCESS;
    PtrUDFNTRequiredFCB         NtReqFcb = NULL;
    PFSRTL_COMMON_FCB_HEADER    PtrCommonFCBHeader = NULL;
    PtrUDFObjectName            RootName;
    PtrUDFFCB                   RootFcb;
    PDIR_INDEX_HDR hDirNdx;
    PDIR_INDEX_ITEM DirNdx;

    // Create the root index and reference it in the Vcb.
    RootFcb =
    Vcb->RootDirFCB = UDFAllocateFCB();
    if(!RootFcb) return STATUS_INSUFFICIENT_RESOURCES;
    RtlZeroMemory(RootFcb,sizeof(UDFFCB));

    // Allocate and set root FCB unique name
    RootName = UDFAllocateObjectName();
    if(!RootName) {
//bl_unwind_2:
        UDFCleanUpFCB(RootFcb);
        Vcb->RootDirFCB = NULL;
        return STATUS_INSUFFICIENT_RESOURCES;
    }
    RC = MyInitUnicodeString(&(RootName->ObjectName),UDF_ROOTDIR_NAME);
    if(!NT_SUCCESS(RC))
        goto bl_unwind_1;

    RootFcb->NodeIdentifier.NodeType = UDF_NODE_TYPE_FCB;
    RootFcb->NodeIdentifier.NodeSize = sizeof(UDFFCB);

    RootFcb->FileInfo = (PUDF_FILE_INFO)MyAllocatePool__(NonPagedPool,sizeof(UDF_FILE_INFO));
    if(!RootFcb->FileInfo) {
        MyFreePool__(RootName->ObjectName.Buffer);
        RC = STATUS_INSUFFICIENT_RESOURCES;
bl_unwind_1:
        UDFReleaseObjectName(RootName);
        UDFCleanUpFCB(RootFcb);
        Vcb->RootDirFCB = NULL;
        return RC;
    }
    RtlZeroMemory(RootFcb->FileInfo, sizeof(UDF_FILE_INFO));
    if(!OS_SUCCESS(RC = UDFStoreDloc(Vcb, RootFcb->FileInfo, 1))) {
        MyFreePool__(RootFcb->FileInfo);
        RootFcb->FileInfo = NULL;
        MyFreePool__(RootName->ObjectName.Buffer);
        goto  bl_unwind_1;
    }
    RootFcb->FileInfo->NextLinkedFile =
    RootFcb->FileInfo->PrevLinkedFile = RootFcb->FileInfo;

    hDirNdx = UDFDirIndexAlloc(2);
    DirNdx = UDFDirIndex(hDirNdx,0);
    DirNdx->FileCharacteristics = FILE_DIRECTORY;
    DirNdx->FI_Flags = UDF_FI_FLAG_SYS_ATTR;
    DirNdx->SysAttr = FILE_ATTRIBUTE_READONLY;
    RtlInitUnicodeString(&DirNdx->FName, L".");
    DirNdx->FileInfo = RootFcb->FileInfo;
    DirNdx->FI_Flags |= UDFBuildHashEntry(Vcb, &(DirNdx->FName), &(DirNdx->hashes), HASH_ALL | HASH_KEEP_NAME);

    DirNdx = UDFDirIndex(hDirNdx,1);
    DirNdx->FI_Flags = UDF_FI_FLAG_SYS_ATTR;
    if(Vcb->ShowBlankCd == 2) {
        DirNdx->FI_Flags |= UDF_FI_FLAG_FI_INTERNAL;
    }
    DirNdx->SysAttr = FILE_ATTRIBUTE_READONLY;
    RtlInitUnicodeString(&DirNdx->FName, L"Blank.CD");
    DirNdx->FI_Flags |= UDFBuildHashEntry(Vcb, &(DirNdx->FName), &(DirNdx->hashes), HASH_ALL);

    RootFcb->FileInfo->Dloc->DirIndex = hDirNdx;
    RootFcb->FileInfo->Fcb = RootFcb;

    if(!(RootFcb->NTRequiredFCB = RootFcb->FileInfo->Dloc->CommonFcb)) {
        if(!(RootFcb->NTRequiredFCB =
                    (PtrUDFNTRequiredFCB)MyAllocatePool__(NonPagedPool, UDFQuadAlign(sizeof(UDFNTRequiredFCB))) ) ) {
            MyFreePool__(RootName->ObjectName.Buffer);
            UDFReleaseObjectName(RootName);
            UDFCleanUpFCB(RootFcb);
            Vcb->RootDirFCB = NULL;
            return STATUS_INSUFFICIENT_RESOURCES;
        }
        RtlZeroMemory(RootFcb->NTRequiredFCB, UDFQuadAlign(sizeof(UDFNTRequiredFCB)));
        RootFcb->FileInfo->Dloc->CommonFcb = RootFcb->NTRequiredFCB;
    }
    RC = UDFInitializeFCB(RootFcb,Vcb,RootName,UDF_FCB_ROOT_DIRECTORY | UDF_FCB_DIRECTORY,NULL);
    if(!NT_SUCCESS(RC)) {
        // if we get here, no resources are inited
        RootFcb->OpenHandleCount =
        RootFcb->ReferenceCount  =
        RootFcb->NTRequiredFCB->CommonRefCount = 0;

        UDFCleanUpFile__(Vcb, RootFcb->FileInfo);
        MyFreePool__(RootFcb->FileInfo);
        MyFreePool__(RootFcb->NTRequiredFCB);
        UDFCleanUpFCB(RootFcb);
        Vcb->RootDirFCB = NULL;
        return RC;
    }

    // this is a part of UDF_RESIDUAL_REFERENCE
    UDFInterlockedIncrement((PLONG)&(Vcb->VCBOpenCount));
    RootFcb->OpenHandleCount =
    RootFcb->ReferenceCount  =
    RootFcb->NTRequiredFCB->CommonRefCount =
    RootFcb->FileInfo->RefCount =
    RootFcb->FileInfo->Dloc->LinkRefCount = 1;

    // this is a part of UDF_RESIDUAL_REFERENCE
    UDFInterlockedIncrement((PLONG)&(Vcb->VCBOpenCount));

    NtReqFcb = RootFcb->NTRequiredFCB;

    // Start initializing the fields contained in the CommonFCBHeader.
    PtrCommonFCBHeader = &(NtReqFcb->CommonFCBHeader);

    // DisAllow fast-IO for now.
    PtrCommonFCBHeader->IsFastIoPossible = FastIoIsNotPossible;

    // Initialize the MainResource and PagingIoResource pointers in
    // the CommonFCBHeader structure to point to the ERESOURCE structures we
    // have allocated and already initialized above.
    PtrCommonFCBHeader->Resource = &(NtReqFcb->MainResource);
    PtrCommonFCBHeader->PagingIoResource = &(NtReqFcb->PagingIoResource);

    // Initialize the file size values here.
    PtrCommonFCBHeader->AllocationSize.QuadPart = 0;
    PtrCommonFCBHeader->FileSize.QuadPart = 0;

    // The following will disable ValidDataLength support.
    PtrCommonFCBHeader->ValidDataLength.QuadPart = 0x7FFFFFFFFFFFFFFFLL;

    return RC;
} // end UDFBlankMount()

Referenced by UDFMountVolume().

UDFCleanupVCB()

VOID UDFCleanupVCB

(

IN PVCB

Vcb

)

Definition at line 1428 of file fscntrl.cpp.

{
    _SEH2_TRY {
        UDFReleaseFileIdCache(Vcb);
        UDFReleaseDlocList(Vcb);
    } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) {
        BrutePoint();
    } _SEH2_END;

    if(Vcb->ShutdownRegistered && Vcb->VCBDeviceObject) {
        IoUnregisterShutdownNotification(Vcb->VCBDeviceObject);
        Vcb->ShutdownRegistered = FALSE;
    }

    MyFreeMemoryAndPointer(Vcb->Partitions);
    MyFreeMemoryAndPointer(Vcb->LVid);
    MyFreeMemoryAndPointer(Vcb->Vat);
    MyFreeMemoryAndPointer(Vcb->SparingTable);

    if(Vcb->FSBM_Bitmap) {
        DbgFreePool(Vcb->FSBM_Bitmap);
        Vcb->FSBM_Bitmap = NULL;
    }
    if(Vcb->ZSBM_Bitmap) {
        DbgFreePool(Vcb->ZSBM_Bitmap);
        Vcb->ZSBM_Bitmap = NULL;
    }
    if(Vcb->BSBM_Bitmap) {
        DbgFreePool(Vcb->BSBM_Bitmap);
        Vcb->BSBM_Bitmap = NULL;
    }
#ifdef UDF_TRACK_ONDISK_ALLOCATION_OWNERS
    if(Vcb->FSBM_Bitmap_owners) {
        DbgFreePool(Vcb->FSBM_Bitmap_owners);
        Vcb->FSBM_Bitmap_owners = NULL;
    }
#endif //UDF_TRACK_ONDISK_ALLOCATION_OWNERS
    if(Vcb->FSBM_OldBitmap) {
        DbgFreePool(Vcb->FSBM_OldBitmap);
        Vcb->FSBM_OldBitmap = NULL;
    }

    MyFreeMemoryAndPointer(Vcb->Statistics);
    MyFreeMemoryAndPointer(Vcb->NTRequiredFCB);
    MyFreeMemoryAndPointer(Vcb->VolIdent.Buffer);
    MyFreeMemoryAndPointer(Vcb->TargetDevName.Buffer);

    if(Vcb->ZBuffer) {
        DbgFreePool(Vcb->ZBuffer);
        Vcb->ZBuffer = NULL;
    }

    if(Vcb->fZBuffer) {
        DbgFreePool(Vcb->fZBuffer);
        Vcb->fZBuffer = NULL;
    }

    MyFreeMemoryAndPointer(Vcb->OPCh);
    MyFreeMemoryAndPointer(Vcb->WParams);
    MyFreeMemoryAndPointer(Vcb->Error);
    MyFreeMemoryAndPointer(Vcb->TrackMap);

} // end UDFCleanupVCB()

Referenced by UDFReleaseVCB(), and UDFVerifyVolume().

UDFCloseResidual()

VOID UDFCloseResidual

(

IN PVCB

Vcb

)

Definition at line 1349 of file fscntrl.cpp.

{
    //  Deinitialize Non-alloc file
    if(Vcb->VCBOpenCount)
        UDFInterlockedDecrement((PLONG)&(Vcb->VCBOpenCount));
    UDFPrint(("UDFCloseResidual: NonAllocFileInfo %x\n", Vcb->NonAllocFileInfo));
    if(Vcb->NonAllocFileInfo) {
        UDFCloseFile__(Vcb,Vcb->NonAllocFileInfo);
        UDFCleanUpFile__(Vcb, Vcb->NonAllocFileInfo);
        MyFreePool__(Vcb->NonAllocFileInfo);
        Vcb->NonAllocFileInfo = NULL;
    }
    //  Deinitialize Unique ID Mapping
    UDFPrint(("UDFCloseResidual: NonAllocFileInfo %x\n", Vcb->NonAllocFileInfo));
    if(Vcb->UniqueIDMapFileInfo) {
        UDFCloseFile__(Vcb,Vcb->UniqueIDMapFileInfo);
        UDFCleanUpFile__(Vcb, Vcb->UniqueIDMapFileInfo);
        MyFreePool__(Vcb->UniqueIDMapFileInfo);
        Vcb->UniqueIDMapFileInfo = NULL;
    }
    //  Deinitialize VAT file
    UDFPrint(("UDFCloseResidual: VatFileInfo %x\n", Vcb->VatFileInfo));
    if(Vcb->VatFileInfo) {
        UDFCloseFile__(Vcb,Vcb->VatFileInfo);
        UDFCleanUpFile__(Vcb, Vcb->VatFileInfo);
        MyFreePool__(Vcb->VatFileInfo);
        Vcb->VatFileInfo = NULL;
    }
    //  System StreamDir
    UDFPrint(("UDFCloseResidual: SysSDirFileInfo %x\n", Vcb->SysSDirFileInfo));
    if(Vcb->SysSDirFileInfo) {
        UDFCloseFile__(Vcb, Vcb->SysSDirFileInfo);
        UDFCleanUpFile__(Vcb, Vcb->SysSDirFileInfo);
        MyFreePool__(Vcb->SysSDirFileInfo);
        Vcb->SysSDirFileInfo = NULL;
    }
/*    //  Deinitialize root dir fcb
    if(Vcb->RootDirFCB) {
        UDFCloseFile__(Vcb,Vcb->RootDirFCB->FileInfo);
        UDFCleanUpFile__(Vcb, Vcb->RootDirFCB->FileInfo);
        MyFreePool__(Vcb->RootDirFCB->FileInfo);
        UDFCleanUpFCB(Vcb->RootDirFCB);
        //  Remove root FCB reference in vcb
        if(Vcb->VCBOpenCount) Vcb->VCBOpenCount--;
    }

    // Deinitialize Non-alloc file
    if(Vcb->VCBOpenCount) Vcb->VCBOpenCount--;
    if(Vcb->NonAllocFileInfo) {
        UDFCloseFile__(Vcb,Vcb->NonAllocFileInfo);
        // We must release VCB here !!!!
//        UDFCleanUpFcbChain(Vcb, Vcb->NonAllocFileInfo, 1);
        Vcb->NonAllocFileInfo = NULL;
    }
    // Deinitialize VAT file
    if(Vcb->VatFileInfo) {
        UDFCloseFile__(Vcb,Vcb->VatFileInfo);
        // We must release VCB here !!!!
//        UDFCleanUpFcbChain(Vcb, Vcb->VatFileInfo, 1);
        Vcb->VatFileInfo = NULL;
    }*/

    // Deinitialize root dir fcb
    UDFPrint(("UDFCloseResidual: RootDirFCB %x\n", Vcb->RootDirFCB));
    if(Vcb->RootDirFCB) {
        UDFCloseFile__(Vcb,Vcb->RootDirFCB->FileInfo);
        if(Vcb->RootDirFCB->OpenHandleCount)
            Vcb->RootDirFCB->OpenHandleCount--;
        UDFCleanUpFcbChain(Vcb, Vcb->RootDirFCB->FileInfo, 1, TRUE);
        // Remove root FCB reference in vcb
        if(Vcb->VCBOpenCount)
            UDFInterlockedDecrement((PLONG)&(Vcb->VCBOpenCount));
        Vcb->RootDirFCB = NULL;
    }
} // end UDFCloseResidual()

Referenced by UDFDismountVcb(), and UDFMountVolume().

UDFCommonFSControl()

NTSTATUS NTAPI UDFCommonFSControl	(	PtrUDFIrpContext	PtrIrpContext,
		PIRP	Irp
	)

Definition at line 103 of file fscntrl.cpp.

{
    NTSTATUS                RC = STATUS_UNRECOGNIZED_VOLUME;
    PIO_STACK_LOCATION      IrpSp = NULL;
//    PDEVICE_OBJECT          PtrTargetDeviceObject = NULL;

    UDFPrint(("\nUDFCommonFSControl\n\n"));
//    BrutePoint();

    _SEH2_TRY {

        IrpSp = IoGetCurrentIrpStackLocation(Irp);
        ASSERT(IrpSp);

        switch ((IrpSp)->MinorFunction)
        {
        case IRP_MN_USER_FS_REQUEST:
            UDFPrint(("  UDFFSControl: UserFsReq request ....\n"));

            RC = UDFUserFsCtrlRequest(PtrIrpContext,Irp);
            break;
        case IRP_MN_MOUNT_VOLUME:

            UDFPrint(("  UDFFSControl: MOUNT_VOLUME request ....\n"));

            RC = UDFMountVolume(PtrIrpContext,Irp);
            break;
        case IRP_MN_VERIFY_VOLUME:

            UDFPrint(("  UDFFSControl: VERIFY_VOLUME request ....\n"));

            RC = UDFVerifyVolume(Irp);
            break;
        default:
            UDFPrintErr(("  UDFFSControl: STATUS_INVALID_DEVICE_REQUEST MinorFunction %x\n", (IrpSp)->MinorFunction));
            RC = STATUS_INVALID_DEVICE_REQUEST;

            Irp->IoStatus.Status = RC;
            Irp->IoStatus.Information = 0;
            // complete the IRP
            IoCompleteRequest(Irp, IO_DISK_INCREMENT);
            break;
        }

//try_exit:   NOTHING;
    } _SEH2_FINALLY {
        if (!_SEH2_AbnormalTermination()) {
            // Free up the Irp Context
            UDFPrint(("  UDFCommonFSControl: finally\n"));
            UDFReleaseIrpContext(PtrIrpContext);
        } else {
            UDFPrint(("  UDFCommonFSControl: finally after exception ***\n"));
        }
    } _SEH2_END;

    return(RC);
} // end UDFCommonFSControl()

Referenced by UDFFSControl().

UDFCompleteMount()

NTSTATUS UDFCompleteMount

(

IN PVCB

Vcb

)

Definition at line 913 of file fscntrl.cpp.

{
    NTSTATUS                    RC;// = STATUS_SUCCESS;
    PtrUDFNTRequiredFCB         NtReqFcb = NULL;
    PFSRTL_COMMON_FCB_HEADER    PtrCommonFCBHeader = NULL;
    UNICODE_STRING              LocalPath;
    PtrUDFObjectName            RootName;
    PtrUDFFCB                   RootFcb;

    UDFPrint(("UDFCompleteMount:\n"));
    Vcb->ZBuffer = (PCHAR)DbgAllocatePoolWithTag(NonPagedPool, max(Vcb->LBlockSize, PAGE_SIZE), 'zNWD');
    if(!Vcb->ZBuffer) return STATUS_INSUFFICIENT_RESOURCES;
    RtlZeroMemory(Vcb->ZBuffer, Vcb->LBlockSize);

    UDFPrint(("UDFCompleteMount: alloc Root FCB\n"));
    // Create the root index and reference it in the Vcb.
    RootFcb =
    Vcb->RootDirFCB = UDFAllocateFCB();
    if(!RootFcb) return STATUS_INSUFFICIENT_RESOURCES;

    UDFPrint(("UDFCompleteMount: alloc Root ObjName\n"));
    // Allocate and set root FCB unique name
    RootName = UDFAllocateObjectName();
    if(!RootName) {
        UDFCleanUpFCB(RootFcb);
        Vcb->RootDirFCB = NULL;
        return STATUS_INSUFFICIENT_RESOURCES;
    }
    RC = MyInitUnicodeString(&(RootName->ObjectName),UDF_ROOTDIR_NAME);
    if(!NT_SUCCESS(RC))
        goto insuf_res_1;

    RootFcb->FileInfo = (PUDF_FILE_INFO)MyAllocatePool__(NonPagedPool,sizeof(UDF_FILE_INFO));
    if(!RootFcb->FileInfo) {
        RC = STATUS_INSUFFICIENT_RESOURCES;
insuf_res_1:
        MyFreePool__(RootName->ObjectName.Buffer);
        UDFReleaseObjectName(RootName);
        UDFCleanUpFCB(RootFcb);
        Vcb->RootDirFCB = NULL;
        return RC;
    }
    UDFPrint(("UDFCompleteMount: open Root Dir\n"));
    // Open Root Directory
    RC = UDFOpenRootFile__( Vcb, &(Vcb->RootLbAddr), RootFcb->FileInfo );
    if(!NT_SUCCESS(RC)) {
insuf_res_2:
        UDFCleanUpFile__(Vcb, RootFcb->FileInfo);
        MyFreePool__(RootFcb->FileInfo);
        goto insuf_res_1;
    }
    RootFcb->FileInfo->Fcb = RootFcb;

    if(!(RootFcb->NTRequiredFCB = RootFcb->FileInfo->Dloc->CommonFcb)) {
        UDFPrint(("UDFCompleteMount: alloc Root ObjName (2)\n"));
        if(!(RootFcb->NTRequiredFCB =
                    (PtrUDFNTRequiredFCB)MyAllocatePool__(NonPagedPool, UDFQuadAlign(sizeof(UDFNTRequiredFCB))) ) ) {
            RC = STATUS_INSUFFICIENT_RESOURCES;
            goto insuf_res_2;
        }
        RtlZeroMemory(RootFcb->NTRequiredFCB, UDFQuadAlign(sizeof(UDFNTRequiredFCB)));
        RootFcb->FileInfo->Dloc->CommonFcb = RootFcb->NTRequiredFCB;
    }
    UDFPrint(("UDFCompleteMount: init FCB\n"));
    RC = UDFInitializeFCB(RootFcb,Vcb,RootName,UDF_FCB_ROOT_DIRECTORY | UDF_FCB_DIRECTORY,NULL);
    if(!NT_SUCCESS(RC)) {
        // if we get here, no resources are inited
        RootFcb->OpenHandleCount =
        RootFcb->ReferenceCount  =
        RootFcb->NTRequiredFCB->CommonRefCount = 0;

        UDFCleanUpFile__(Vcb, RootFcb->FileInfo);
        MyFreePool__(RootFcb->FileInfo);
        MyFreePool__(RootFcb->NTRequiredFCB);
        UDFCleanUpFCB(RootFcb);
        Vcb->RootDirFCB = NULL;
        return RC;
    }

    // this is a part of UDF_RESIDUAL_REFERENCE
    UDFInterlockedIncrement((PLONG)&(Vcb->VCBOpenCount));
    RootFcb->OpenHandleCount =
    RootFcb->ReferenceCount  =
    RootFcb->NTRequiredFCB->CommonRefCount = 1;

    UDFGetFileXTime(RootFcb->FileInfo,
                  &(RootFcb->NTRequiredFCB->CreationTime.QuadPart),
                  &(RootFcb->NTRequiredFCB->LastAccessTime.QuadPart),
                  &(RootFcb->NTRequiredFCB->ChangeTime.QuadPart),
                  &(RootFcb->NTRequiredFCB->LastWriteTime.QuadPart) );

    if(Vcb->SysStreamLbAddr.logicalBlockNum) {
        Vcb->SysSDirFileInfo = (PUDF_FILE_INFO)MyAllocatePool__(NonPagedPool,sizeof(UDF_FILE_INFO));
        if(!Vcb->SysSDirFileInfo) {
            RC = STATUS_INSUFFICIENT_RESOURCES;
            goto unwind_1;
        }
        // Open System SDir Directory
        RC = UDFOpenRootFile__( Vcb, &(Vcb->SysStreamLbAddr), Vcb->SysSDirFileInfo );
        if(!NT_SUCCESS(RC)) {
            UDFCleanUpFile__(Vcb, Vcb->SysSDirFileInfo);
            MyFreePool__(Vcb->SysSDirFileInfo);
            Vcb->SysSDirFileInfo = NULL;
            goto unwind_1;
        } else {
            Vcb->SysSDirFileInfo->Dloc->DataLoc.Flags |= EXTENT_FLAG_VERIFY;
        }
    }

    // Open Unallocatable space stream
    // Generally, it should be placed in SystemStreamDirectory, but some
    // stupid apps think that RootDirectory is much better place.... :((
    RC = MyInitUnicodeString(&LocalPath, UDF_FN_NON_ALLOCATABLE);
    if(NT_SUCCESS(RC)) {
        RC = UDFOpenFile__(Vcb, FALSE, TRUE, &LocalPath, RootFcb->FileInfo, &(Vcb->NonAllocFileInfo), NULL);
        MyFreePool__(LocalPath.Buffer);
    }
    if(!NT_SUCCESS(RC) && (RC != STATUS_OBJECT_NAME_NOT_FOUND)) {

//unwind_2:
        UDFCleanUpFile__(Vcb, Vcb->NonAllocFileInfo);
        Vcb->NonAllocFileInfo = NULL;
        // this was a part of UDF_RESIDUAL_REFERENCE
        UDFInterlockedDecrement((PLONG)&(Vcb->VCBOpenCount));
unwind_1:

        // UDFCloseResidual() will clean up everything

        return RC;
    }

    /* process Non-allocatable */
    if(NT_SUCCESS(RC)) {
        UDFMarkSpaceAsXXX(Vcb, Vcb->NonAllocFileInfo->Dloc, Vcb->NonAllocFileInfo->Dloc->DataLoc.Mapping, AS_USED); // used
        UDFDirIndex(UDFGetDirIndexByFileInfo(Vcb->NonAllocFileInfo), Vcb->NonAllocFileInfo->Index)->FI_Flags |= UDF_FI_FLAG_FI_INTERNAL;
    } else {
        /* try to read Non-allocatable from alternate locations */
        RC = MyInitUnicodeString(&LocalPath, UDF_FN_NON_ALLOCATABLE_2);
        if(!NT_SUCCESS(RC)) {
            goto unwind_1;
        }
        RC = UDFOpenFile__(Vcb, FALSE, TRUE, &LocalPath, RootFcb->FileInfo, &(Vcb->NonAllocFileInfo), NULL);
        MyFreePool__(LocalPath.Buffer);
        if(!NT_SUCCESS(RC) && (RC != STATUS_OBJECT_NAME_NOT_FOUND)) {
            goto unwind_1;
        }
        if(NT_SUCCESS(RC)) {
            UDFMarkSpaceAsXXX(Vcb, Vcb->NonAllocFileInfo->Dloc, Vcb->NonAllocFileInfo->Dloc->DataLoc.Mapping, AS_USED); // used
            UDFDirIndex(UDFGetDirIndexByFileInfo(Vcb->NonAllocFileInfo), Vcb->NonAllocFileInfo->Index)->FI_Flags |= UDF_FI_FLAG_FI_INTERNAL;
        } else
        if(Vcb->SysSDirFileInfo) {
            RC = MyInitUnicodeString(&LocalPath, UDF_SN_NON_ALLOCATABLE);
            if(!NT_SUCCESS(RC)) {
                goto unwind_1;
            }
            RC = UDFOpenFile__(Vcb, FALSE, TRUE, &LocalPath, Vcb->SysSDirFileInfo , &(Vcb->NonAllocFileInfo), NULL);
            MyFreePool__(LocalPath.Buffer);
            if(!NT_SUCCESS(RC) && (RC != STATUS_OBJECT_NAME_NOT_FOUND)) {
                goto unwind_1;
            }
            if(NT_SUCCESS(RC)) {
                UDFMarkSpaceAsXXX(Vcb, Vcb->NonAllocFileInfo->Dloc, Vcb->NonAllocFileInfo->Dloc->DataLoc.Mapping, AS_USED); // used
//                    UDFDirIndex(UDFGetDirIndexByFileInfo(Vcb->NonAllocFileInfo), Vcb->NonAllocFileInfo->Index)->FI_Flags |= UDF_FI_FLAG_FI_INTERNAL;
            } else {
                RC = STATUS_SUCCESS;
            }
        } else {
            RC = STATUS_SUCCESS;
        }
    }

    /* Read SN UID mapping */
    if(Vcb->SysSDirFileInfo) {
        RC = MyInitUnicodeString(&LocalPath, UDF_SN_UID_MAPPING);
        if(!NT_SUCCESS(RC))
            goto unwind_3;
        RC = UDFOpenFile__(Vcb, FALSE, TRUE, &LocalPath, Vcb->SysSDirFileInfo , &(Vcb->UniqueIDMapFileInfo), NULL);
        MyFreePool__(LocalPath.Buffer);
        if(!NT_SUCCESS(RC) && (RC != STATUS_OBJECT_NAME_NOT_FOUND)) {
unwind_3:
//            UDFCloseFile__(Vcb, Vcb->NonAllocFileInfo);
//            UDFCleanUpFile__(Vcb, Vcb->NonAllocFileInfo);
//            if(Vcb->NonAllocFileInfo)
//                MyFreePool__(Vcb->NonAllocFileInfo);
//            Vcb->NonAllocFileInfo = NULL;
            goto unwind_1;
        } else {
            Vcb->UniqueIDMapFileInfo->Dloc->DataLoc.Flags |= EXTENT_FLAG_VERIFY;
        }
        RC = STATUS_SUCCESS;
    }

#define DWN_MAX_CFG_FILE_SIZE  0x10000

    /* Read DWN config file from disk with disk-specific options */
    RC = MyInitUnicodeString(&LocalPath, UDF_CONFIG_STREAM_NAME_W);
    if(NT_SUCCESS(RC)) {

        int8* buff;
        SIZE_T len;
        PUDF_FILE_INFO CfgFileInfo = NULL;

        RC = UDFOpenFile__(Vcb, FALSE, TRUE, &LocalPath, RootFcb->FileInfo, &CfgFileInfo, NULL);
        if(OS_SUCCESS(RC)) {

            len = (ULONG)UDFGetFileSize(CfgFileInfo);
            if(len && len < DWN_MAX_CFG_FILE_SIZE) {
                buff = (int8*)MyAllocatePool__(NonPagedPool, len);
                if(buff) {
                    RC = UDFReadFile__(Vcb, CfgFileInfo, 0, len, FALSE, buff, &len);
                    if(OS_SUCCESS(RC)) {
                        // parse config
                        Vcb->Cfg = (PUCHAR)buff;
                        Vcb->CfgLength = len;
                        UDFReadRegKeys(Vcb, TRUE /*update*/, TRUE /*cfg*/);
                        Vcb->Cfg = NULL;
                        Vcb->CfgLength = 0;
                        Vcb->CfgVersion = 0;
                    }
                    MyFreePool__(buff);
                }
            }

            UDFCloseFile__(Vcb, CfgFileInfo);
        }
        if(CfgFileInfo) {
            UDFCleanUpFile__(Vcb, CfgFileInfo);
        }
        MyFreePool__(LocalPath.Buffer);
    }
    RC = STATUS_SUCCESS;

    // clear Modified flags. It was not real modify, just
    // bitmap construction
    Vcb->BitmapModified = FALSE;
    //Vcb->Modified = FALSE;
    UDFPreClrModified(Vcb);
    UDFClrModified(Vcb);
    // this is a part of UDF_RESIDUAL_REFERENCE
    UDFInterlockedIncrement((PLONG)&(Vcb->VCBOpenCount));

    NtReqFcb = RootFcb->NTRequiredFCB;

    // Start initializing the fields contained in the CommonFCBHeader.
    PtrCommonFCBHeader = &(NtReqFcb->CommonFCBHeader);

    // DisAllow fast-IO for now.
//    PtrCommonFCBHeader->IsFastIoPossible = FastIoIsNotPossible;
    PtrCommonFCBHeader->IsFastIoPossible = FastIoIsPossible;

    // Initialize the MainResource and PagingIoResource pointers in
    // the CommonFCBHeader structure to point to the ERESOURCE structures we
    // have allocated and already initialized above.
//    PtrCommonFCBHeader->Resource = &(NtReqFcb->MainResource);
//    PtrCommonFCBHeader->PagingIoResource = &(NtReqFcb->PagingIoResource);

    // Initialize the file size values here.
    PtrCommonFCBHeader->AllocationSize.QuadPart = 0;
    PtrCommonFCBHeader->FileSize.QuadPart = 0;

    // The following will disable ValidDataLength support.
//    PtrCommonFCBHeader->ValidDataLength.QuadPart = 0x7FFFFFFFFFFFFFFFI64;
    PtrCommonFCBHeader->ValidDataLength.QuadPart = 0;

    if(!NT_SUCCESS(RC))
        return RC;
    UDFAssignAcl(Vcb, NULL, RootFcb, NtReqFcb);
/*
    Vcb->CDBurnerVolumeValid = true;

    len =
    Vcb->CDBurnerVolume.Length = 256;
    Vcb->CDBurnerVolume.MaximumLength = 256;
    Vcb->CDBurnerVolume.Buffer = (PWCHAR)ExAllocatePool(NonPagedPool, 256);
    RC = RegTGetStringValue(NULL, REG_CD_BURNER_KEY_NAME, REG_CD_BURNER_VOLUME_NAME, Vcb->CDBurnerVolume.Buffer,
        len);
    Vcb->CDBurnerVolume.Length = (USHORT)(wcslen(Vcb->CDBurnerVolume.Buffer)*sizeof(WCHAR));

    if(RC != STATUS_OBJECT_NAME_NOT_FOUND && !NT_SUCCESS(RC) )
        return RC;

    if (NT_SUCCESS(RC)) {
        RtlWriteRegistryValue(RTL_REGISTRY_ABSOLUTE | RTL_REGISTRY_OPTIONAL,
                              REG_CD_BURNER_KEY_NAME, REG_CD_BURNER_VOLUME_NAME,
                              REG_SZ,L"",sizeof(L"")+1);

    } else {
        Vcb->CDBurnerVolumeValid = false;
        RC = STATUS_SUCCESS;
    }
*/
    ASSERT(!Vcb->Modified);

    return RC;
} // end UDFCompleteMount()

Referenced by UDFMountVolume().

UDFDirIndexAlloc()

PDIR_INDEX_HDR UDFDirIndexAlloc

(

IN uint_di

i

)

Definition at line 43 of file dirtree.cpp.

{
    uint_di j,k;
    PDIR_INDEX_HDR hDirNdx;
    PDIR_INDEX_ITEM* FrameList;

    if(!i)
        return NULL;
#ifdef UDF_LIMIT_DIR_SIZE
    if(i>UDF_DIR_INDEX_FRAME)
        return NULL;
#endif //UDF_LIMIT_DIR_SIZE

    j = i >> UDF_DIR_INDEX_FRAME_SH;
    i &= (UDF_DIR_INDEX_FRAME-1);

    hDirNdx = (PDIR_INDEX_HDR)MyAllocatePoolTag__(UDF_DIR_INDEX_MT, sizeof(DIR_INDEX_HDR)+(j+(i!=0))*sizeof(PDIR_INDEX_ITEM), MEM_DIR_HDR_TAG);
    if(!hDirNdx) return NULL;
    RtlZeroMemory(hDirNdx, sizeof(DIR_INDEX_HDR));

    FrameList = (PDIR_INDEX_ITEM*)(hDirNdx+1);
    for(k=0; k<j; k++, FrameList++) {
        (*FrameList) = (PDIR_INDEX_ITEM)MyAllocatePoolTag__(UDF_DIR_INDEX_MT, UDF_DIR_INDEX_FRAME*sizeof(DIR_INDEX_ITEM), MEM_DIR_NDX_TAG);
        if(!(*FrameList)) {
free_hdi:
            // item pointet by FrameList is NULL, it could not be allocated
            while(k) {
                k--;
                FrameList--;
                MyFreePool__(*FrameList);
            }
            MyFreePool__(hDirNdx);
            return NULL;
        }
        RtlZeroMemory((*FrameList), UDF_DIR_INDEX_FRAME*sizeof(DIR_INDEX_ITEM));
    }
    if(i) {
        (*FrameList) = (PDIR_INDEX_ITEM)MyAllocatePoolTag__(UDF_DIR_INDEX_MT, AlignDirIndex(i)*sizeof(DIR_INDEX_ITEM), MEM_DIR_NDX_TAG);
        if(!(*FrameList))
            goto free_hdi;
        RtlZeroMemory((*FrameList), i*sizeof(DIR_INDEX_ITEM));
    }

    hDirNdx->FrameCount = j+(i!=0);
    hDirNdx->LastFrameCount = i ? i : UDF_DIR_INDEX_FRAME;

    return hDirNdx;
} // UDFDirIndexAlloc()

Referenced by UDFBlankMount(), and UDFIndexDirectory().

UDFDismountVolume()

NTSTATUS UDFDismountVolume	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp
	)

(Vcb->VCBFlags & UDF_VCB_FLAGS_VOLUME_MOUNTED) ||

Definition at line 1942 of file fscntrl.cpp.

{
    NTSTATUS RC;

    PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation( Irp );

    PVCB Vcb;
    PtrUDFFCB Fcb;
    PtrUDFCCB Ccb;
    PPREVENT_MEDIA_REMOVAL_USER_IN Buf = NULL;
    BOOLEAN VcbAcquired = FALSE;

    UDFPrint(("\n ### UDFDismountVolume ###\n\n"));

    //  Decode the file object, the only type of opens we accept are
    //  user volume opens.
    Ccb = (PtrUDFCCB)(IrpSp->FileObject->FsContext2);
    if(!Ccb) {
        UDFPrintErr(("  !Ccb\n"));
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }
    Fcb = Ccb->Fcb;
    Vcb = Fcb->Vcb;

    // Check for volume open
    if(Vcb != (PVCB)Fcb || !(Ccb->CCBFlags & UDF_CCB_VOLUME_OPEN)) {
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }

    UDFNotifyVolumeEvent(IrpSp->FileObject, FSRTL_VOLUME_DISMOUNT);

    if(!(Vcb->VCBFlags & UDF_VCB_FLAGS_RAW_DISK))
        UDFCloseAllSystemDelayedInDir(Vcb, Vcb->RootDirFCB->FileInfo);
#ifdef UDF_DELAYED_CLOSE
    UDFCloseAllDelayed(Vcb);
#endif //UDF_DELAYED_CLOSE

    //  Acquire exclusive access to the Vcb.
    UDFAcquireResourceExclusive(&(Vcb->VCBResource), TRUE );
    VcbAcquired = TRUE;

    _SEH2_TRY {

        //  Mark the volume as needs to be verified, but only do it if
        //  the vcb is locked by this handle and the volume is currently mounted.

        if(!(Vcb->VCBFlags & UDF_VCB_FLAGS_VOLUME_MOUNTED)) {
            // disable Eject Request Waiter if any
            UDFReleaseResource( &(Vcb->VCBResource) );
            VcbAcquired = FALSE;

            UDFStopEjectWaiter(Vcb);
            RC = STATUS_SUCCESS;
        } else
        if(
           !(Vcb->VCBFlags & UDF_VCB_FLAGS_VOLUME_LOCKED) ||
            (Vcb->VCBOpenCount > (UDF_RESIDUAL_REFERENCE+1))) {

            RC = STATUS_NOT_LOCKED;
        } else
        if((Vcb->VolumeLockFileObject != IrpSp->FileObject)) {

            RC = STATUS_INVALID_PARAMETER;

        } else {

            Vcb->Vpb->RealDevice->Flags |= DO_VERIFY_VOLUME;
            Buf = (PPREVENT_MEDIA_REMOVAL_USER_IN)MyAllocatePool__(NonPagedPool, sizeof(PREVENT_MEDIA_REMOVAL_USER_IN));
            if(!Buf) try_return(RC = STATUS_INSUFFICIENT_RESOURCES);
            UDFDoDismountSequence(Vcb, Buf, FALSE);
            Vcb->VCBFlags &= ~UDF_VCB_FLAGS_VOLUME_MOUNTED;
            Vcb->WriteSecurity = FALSE;
            // disable Eject Request Waiter if any
            UDFReleaseResource( &(Vcb->VCBResource) );
            VcbAcquired = FALSE;

            UDFStopEjectWaiter(Vcb);
            RC = STATUS_SUCCESS;
        }
try_exit: NOTHING;
    } _SEH2_FINALLY {
        //  Free memory
        if(Buf) MyFreePool__(Buf);
        //  Release all of our resources
        if(VcbAcquired)
            UDFReleaseResource( &(Vcb->VCBResource) );
    } _SEH2_END;

    if(!NT_SUCCESS(RC)) {
        UDFNotifyVolumeEvent(IrpSp->FileObject, FSRTL_VOLUME_DISMOUNT_FAILED);
    }

    //  Complete the request if there haven't been any exceptions.
    Irp->IoStatus.Information = 0;
    Irp->IoStatus.Status = RC;
    return RC;
} // end UDFDismountVolume()

Referenced by UDFUserFsCtrlRequest().

UDFFSControl()

NTSTATUS NTAPI UDFFSControl	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp
	)

Definition at line 39 of file fscntrl.cpp.

{
    NTSTATUS            RC = STATUS_SUCCESS;
    PtrUDFIrpContext    PtrIrpContext;
    BOOLEAN             AreWeTopLevel = FALSE;

    UDFPrint(("\nUDFFSControl: \n\n"));

    FsRtlEnterFileSystem();
    ASSERT(DeviceObject);
    ASSERT(Irp);

    // set the top level context
    AreWeTopLevel = UDFIsIrpTopLevel(Irp);

    _SEH2_TRY {

        // get an IRP context structure and issue the request
        PtrIrpContext = UDFAllocateIrpContext(Irp, DeviceObject);
        if(PtrIrpContext) {
            RC = UDFCommonFSControl(PtrIrpContext, Irp);
        } else {
            RC = STATUS_INSUFFICIENT_RESOURCES;
            Irp->IoStatus.Status = RC;
            Irp->IoStatus.Information = 0;
            // complete the IRP
            IoCompleteRequest(Irp, IO_DISK_INCREMENT);
        }

    } _SEH2_EXCEPT(UDFExceptionFilter(PtrIrpContext, _SEH2_GetExceptionInformation())) {

        UDFPrintErr(("UDFFSControl: exception ***"));
        RC = UDFExceptionHandler(PtrIrpContext, Irp);

        UDFLogEvent(UDF_ERROR_INTERNAL_ERROR, RC);
    } _SEH2_END;

    if(AreWeTopLevel) {
        IoSetTopLevelIrp(NULL);
    }

    FsRtlExitFileSystem();

    return(RC);
} // end UDFFSControl()

Referenced by UDFInitializeFunctionPointers().

UDFGetRetrievalPointers()

NTSTATUS UDFGetRetrievalPointers	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp,
		IN ULONG	Special
	)

Definition at line 2205 of file fscntrl.cpp.

{
    NTSTATUS RC;

    PEXTENDED_IO_STACK_LOCATION IrpSp =
        (PEXTENDED_IO_STACK_LOCATION)IoGetCurrentIrpStackLocation( Irp );

    PVCB Vcb;
    PtrUDFFCB Fcb;
    PtrUDFCCB Ccb;
    PUDF_FILE_INFO FileInfo;

    ULONG InputBufferLength;
    ULONG OutputBufferLength;

    PRETRIEVAL_POINTERS_BUFFER OutputBuffer;
    PSTARTING_VCN_INPUT_BUFFER InputBuffer;

    LARGE_INTEGER StartingVcn;
    int64 AllocationSize;

    PEXTENT_MAP SubMapping = NULL;
    ULONG SubExtInfoSz;
    ULONG i;
    ULONG LBS;
    ULONG LBSh;
    ULONG L2BSh;

    UDFPrint(("UDFGetRetrievalPointers\n"));

    // Decode the file object, the only type of opens we accept are
    // user volume opens.
    Ccb = (PtrUDFCCB)(IrpSp->FileObject->FsContext2);
    if(!Ccb) {
        UDFPrintErr(("  !Ccb\n"));
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }
    Fcb = Ccb->Fcb;
    Vcb = Fcb->Vcb;

    //  Get the input and output buffer lengths and pointers.
    //  Initialize some variables.
    InputBufferLength = IrpSp->Parameters.FileSystemControl.InputBufferLength;
    OutputBufferLength = IrpSp->Parameters.FileSystemControl.OutputBufferLength;

    //OutputBuffer = (PRETRIEVAL_POINTERS_BUFFER)UDFGetCallersBuffer( IrpContext, Irp );
    if(Special) {
        OutputBuffer = (PRETRIEVAL_POINTERS_BUFFER)Irp->AssociatedIrp.SystemBuffer;
    } else {
        OutputBuffer = (PRETRIEVAL_POINTERS_BUFFER)Irp->UserBuffer;
    }
    InputBuffer = (PSTARTING_VCN_INPUT_BUFFER)IrpSp->Parameters.FileSystemControl.Type3InputBuffer;
    if(!InputBuffer) {
        InputBuffer = (PSTARTING_VCN_INPUT_BUFFER)OutputBuffer;
    }

    _SEH2_TRY {

        Irp->IoStatus.Information = 0;
        //  Check for a minimum length on the input and ouput buffers.
        if ((InputBufferLength < sizeof(STARTING_VCN_INPUT_BUFFER)) ||
            (OutputBufferLength < sizeof(RETRIEVAL_POINTERS_BUFFER))) {

            try_return( RC = STATUS_BUFFER_TOO_SMALL );
        }

        _SEH2_TRY {

            if (Irp->RequestorMode != KernelMode) {
                ProbeForRead( IrpSp->Parameters.FileSystemControl.Type3InputBuffer,
                              InputBufferLength,
                              sizeof(UCHAR) );
                ProbeForWrite( OutputBuffer, OutputBufferLength, sizeof(UCHAR) );
            }
            StartingVcn = InputBuffer->StartingVcn;

        } _SEH2_EXCEPT(Irp->RequestorMode != KernelMode ? EXCEPTION_EXECUTE_HANDLER: EXCEPTION_CONTINUE_SEARCH) {

            RC = _SEH2_GetExceptionCode();
            RC = FsRtlIsNtstatusExpected(RC) ?
                              RC : STATUS_INVALID_USER_BUFFER;
            try_return(RC);
        } _SEH2_END;

        switch(Special) {
        case 0:
            FileInfo = Fcb->FileInfo;
            break;
        case 1:
            FileInfo = Vcb->NonAllocFileInfo;
            break;
        default:
            try_return( RC = STATUS_INVALID_PARAMETER );
        }

        if(!FileInfo) {
            try_return( RC = STATUS_OBJECT_NAME_NOT_FOUND );
        }

        AllocationSize = UDFGetFileAllocationSize(Vcb, FileInfo);

        LBS   = Vcb->LBlockSize;
        LBSh  = Vcb->LBlockSizeBits;
        L2BSh = Vcb->LB2B_Bits;

        if (StartingVcn.HighPart ||
            StartingVcn.LowPart >= (ULONG)(AllocationSize >> LBSh)) {

            try_return( RC = STATUS_END_OF_FILE );
        }

        SubExtInfoSz = (OutputBufferLength - FIELD_OFFSET(RETRIEVAL_POINTERS_BUFFER, Extents[0])) / (sizeof(LARGE_INTEGER)*2);
        // re-use AllocationSize as NextVcn
        RC = UDFReadFileLocation__(Vcb, FileInfo, StartingVcn.QuadPart << LBSh,
                                   &SubMapping, &SubExtInfoSz, &AllocationSize);
        if(!NT_SUCCESS(RC))
            try_return(RC);

        OutputBuffer->ExtentCount = SubExtInfoSz;
        OutputBuffer->StartingVcn = StartingVcn;
        for(i=0; i<SubExtInfoSz; i++) {
            // assume, that
            // for not-allocated extents we have start Lba = -1
            // for not-recorded extents start Lba.LowPart contains real Lba, Lba.HighPart = 0x80000000
            // for recorded extents Lba.LowPart contains real Lba, Lba.HighPart = 0
            if(SubMapping[i].extLocation == LBA_NOT_ALLOCATED) {
                OutputBuffer->Extents[i].Lcn.QuadPart = (int64)(-1);
            } else
            if(SubMapping[i].extLocation & 0x80000000) {
                OutputBuffer->Extents[i].Lcn.LowPart = (SubMapping[i].extLocation & 0x7fffffff) >> L2BSh;
                OutputBuffer->Extents[i].Lcn.HighPart = 0x80000000;
            } else {
                OutputBuffer->Extents[i].Lcn.LowPart = SubMapping[i].extLocation >> L2BSh;
                OutputBuffer->Extents[i].Lcn.HighPart = 0;
            }
            // alignment for last sector
            SubMapping[i].extLength += LBS-1;
            StartingVcn.QuadPart += SubMapping[i].extLength   >> LBSh;
            OutputBuffer->Extents[i].NextVcn = StartingVcn;
        }

        Irp->IoStatus.Information = FIELD_OFFSET(RETRIEVAL_POINTERS_BUFFER, Extents[0]) + i * sizeof(LARGE_INTEGER) * 2;

try_exit:   NOTHING;
    } _SEH2_FINALLY {

        if(SubMapping)
            MyFreePool__(SubMapping);
        Irp->IoStatus.Status = RC;
    } _SEH2_END;

    return RC;
} // end UDFGetRetrievalPointers()

Referenced by UDFCommonDeviceControl(), and UDFUserFsCtrlRequest().

UDFGetStatistics()

NTSTATUS UDFGetStatistics	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp
	)

Definition at line 1601 of file fscntrl.cpp.

{
    PEXTENDED_IO_STACK_LOCATION IrpSp = (PEXTENDED_IO_STACK_LOCATION)IoGetCurrentIrpStackLocation( Irp );
    NTSTATUS status;
    PVCB Vcb;

    PFILE_SYSTEM_STATISTICS Buffer;
    ULONG BufferLength;
    ULONG StatsSize;
    ULONG BytesToCopy;

    UDFPrint(("UDFGetStatistics\n"));

    // Extract the buffer
    BufferLength = IrpSp->Parameters.FileSystemControl.OutputBufferLength;
    //  Get a pointer to the output buffer.
    Buffer = (PFILE_SYSTEM_STATISTICS)(Irp->AssociatedIrp.SystemBuffer);

    //  Make sure the buffer is big enough for at least the common part.
    if (BufferLength < sizeof(FILESYSTEM_STATISTICS)) {
        status = STATUS_BUFFER_TOO_SMALL;
        Irp->IoStatus.Information = 0;
        goto EO_stat;
    }

    //  Now see how many bytes we can copy.
    StatsSize = sizeof(FILE_SYSTEM_STATISTICS) * KeNumberProcessors;
    if (BufferLength < StatsSize) {
        BytesToCopy = BufferLength;
        status = STATUS_BUFFER_OVERFLOW;
    } else {
        BytesToCopy = StatsSize;
        status =  STATUS_SUCCESS;
    }

    Vcb = (PVCB)(((PDEVICE_OBJECT)IrpSp->DeviceObject)->DeviceExtension);
    //  Fill in the output buffer
    RtlCopyMemory( Buffer, Vcb->Statistics, BytesToCopy );
    Irp->IoStatus.Information = BytesToCopy;
EO_stat:
    Irp->IoStatus.Status = status;

    return status;
} // end UDFGetStatistics()

Referenced by UDFUserFsCtrlRequest().

UDFGetVolumeBitmap()

NTSTATUS UDFGetVolumeBitmap	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp
	)

Definition at line 2069 of file fscntrl.cpp.

{
//    NTSTATUS RC;

    PEXTENDED_IO_STACK_LOCATION IrpSp =
        (PEXTENDED_IO_STACK_LOCATION)IoGetCurrentIrpStackLocation( Irp );

    PVCB Vcb;
    PtrUDFFCB Fcb;
    PtrUDFCCB Ccb;

    UDFPrint(("UDFGetVolumeBitmap\n"));

    ULONG BytesToCopy;
    ULONG TotalClusters;
    ULONG DesiredClusters;
    ULONG StartingCluster;
    ULONG InputBufferLength;
    ULONG OutputBufferLength;
    LARGE_INTEGER StartingLcn;
    PVOLUME_BITMAP_BUFFER OutputBuffer;
    ULONG i, lim;
    PULONG FSBM;
//    PULONG Dest;
    ULONG LSh;

    // Decode the file object, the only type of opens we accept are
    // user volume opens.
    Ccb = (PtrUDFCCB)(IrpSp->FileObject->FsContext2);
    if(!Ccb) {
        UDFPrintErr(("  !Ccb\n"));
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }
    Fcb = Ccb->Fcb;
    Vcb = Fcb->Vcb;

    InputBufferLength = IrpSp->Parameters.FileSystemControl.InputBufferLength;
    OutputBufferLength = IrpSp->Parameters.FileSystemControl.OutputBufferLength;

    OutputBuffer = (PVOLUME_BITMAP_BUFFER)UDFGetCallersBuffer(IrpContext, Irp);
    if(!OutputBuffer)
        return STATUS_INVALID_USER_BUFFER;

    // Check for a minimum length on the input and output buffers.
    if ((InputBufferLength < sizeof(STARTING_LCN_INPUT_BUFFER)) ||
        (OutputBufferLength < sizeof(VOLUME_BITMAP_BUFFER))) {

        UDFUnlockCallersBuffer(IrpContext, Irp, OutputBuffer);
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_BUFFER_TOO_SMALL;
        return STATUS_BUFFER_TOO_SMALL;
    }

    //  Check if a starting cluster was specified.
    TotalClusters = Vcb->FSBM_BitCount;
    StartingLcn = ((PSTARTING_LCN_INPUT_BUFFER)IrpSp->Parameters.FileSystemControl.Type3InputBuffer)->StartingLcn;

    if (StartingLcn.HighPart || StartingLcn.LowPart >= TotalClusters) {

        UDFUnlockCallersBuffer(IrpContext, Irp, OutputBuffer);
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;

    } else {

        StartingCluster = StartingLcn.LowPart & ~7;
    }

    OutputBufferLength -= FIELD_OFFSET(VOLUME_BITMAP_BUFFER, Buffer);
    DesiredClusters = TotalClusters - StartingCluster;

    if (OutputBufferLength < (DesiredClusters + 7) / 8) {

        BytesToCopy = OutputBufferLength;
//        RC = STATUS_BUFFER_OVERFLOW;

    } else {

        BytesToCopy = (DesiredClusters + 7) / 8;
//        RC = STATUS_SUCCESS;
    }

    UDFAcquireResourceExclusive(&(Vcb->VCBResource), TRUE );

    _SEH2_TRY {

        //  Fill in the fixed part of the output buffer
        OutputBuffer->StartingLcn.QuadPart = StartingCluster;
        OutputBuffer->BitmapSize.QuadPart = DesiredClusters;

        RtlZeroMemory( &OutputBuffer->Buffer[0], BytesToCopy );
        lim = BytesToCopy * 8;
        FSBM = (PULONG)(Vcb->FSBM_Bitmap);
        LSh = Vcb->LB2B_Bits;
//        Dest = (PULONG)(&OutputBuffer->Buffer[0]);

        for(i=StartingCluster & ~7; i<lim; i++) {
            if(UDFGetFreeBit(FSBM, i<<LSh))
                UDFSetFreeBit(FSBM, i);
        }

    } _SEH2_EXCEPT(UDFExceptionFilter(IrpContext, _SEH2_GetExceptionInformation())) {

        BrutePoint();
        UDFPrintErr(("UDFGetVolumeBitmap: Exception\n"));
//        UDFUnlockCallersBuffer(IrpContext, Irp, OutputBuffer);
        BrutePoint();
//        RC = UDFExceptionHandler(IrpContext, Irp);
        UDFReleaseResource(&(Vcb->VCBResource));
        UDFUnlockCallersBuffer(IrpContext, Irp, OutputBuffer);

        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_USER_BUFFER;
        return STATUS_INVALID_USER_BUFFER;
    } _SEH2_END;

    UDFReleaseResource(&(Vcb->VCBResource));

    UDFUnlockCallersBuffer(IrpContext, Irp, OutputBuffer);
    Irp->IoStatus.Information = FIELD_OFFSET(VOLUME_BITMAP_BUFFER, Buffer) +
                                BytesToCopy;
    Irp->IoStatus.Status = STATUS_SUCCESS;

    return STATUS_SUCCESS;


} // end UDFGetVolumeBitmap()

Referenced by UDFUserFsCtrlRequest().

UDFInvalidateVolumes()

NTSTATUS UDFInvalidateVolumes	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp
	)

Definition at line 2441 of file fscntrl.cpp.

{
    NTSTATUS RC;
    PEXTENDED_IO_STACK_LOCATION IrpSp =
        (PEXTENDED_IO_STACK_LOCATION)IoGetCurrentIrpStackLocation( Irp );
    PPREVENT_MEDIA_REMOVAL_USER_IN Buf = NULL;

    UDFPrint(("UDFInvalidateVolumes\n"));

    KIRQL SavedIrql;

    LUID TcbPrivilege = {SE_TCB_PRIVILEGE, 0};

    HANDLE Handle;

    PVPB NewVpb;
    PVCB Vcb;

    PLIST_ENTRY Link;

    PFILE_OBJECT FileToMarkBad;
    PDEVICE_OBJECT DeviceToMarkBad;

    Irp->IoStatus.Information = 0;

    //  Check for the correct security access.
    //  The caller must have the SeTcbPrivilege.
    if (IrpSp->MajorFunction == IRP_MJ_FILE_SYSTEM_CONTROL &&
        IrpSp->MinorFunction == IRP_MN_USER_FS_REQUEST &&
        IrpSp->Parameters.FileSystemControl.FsControlCode == FSCTL_INVALIDATE_VOLUMES &&
        !SeSinglePrivilegeCheck( TcbPrivilege, UserMode )) {
        UDFPrintErr(("UDFInvalidateVolumes: STATUS_PRIVILEGE_NOT_HELD\n"));
        Irp->IoStatus.Status = STATUS_PRIVILEGE_NOT_HELD;
        return STATUS_PRIVILEGE_NOT_HELD;
    }
    //  Try to get a pointer to the device object from the handle passed in.
    if (IrpSp->Parameters.FileSystemControl.InputBufferLength != sizeof( HANDLE )) {
        UDFPrintErr(("UDFInvalidateVolumes: STATUS_INVALID_PARAMETER\n"));
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }

    Handle = *((PHANDLE) Irp->AssociatedIrp.SystemBuffer);

    RC = ObReferenceObjectByHandle( Handle,
                                    0,
                                    *IoFileObjectType,
                                    KernelMode,
                                    (PVOID*)&FileToMarkBad,
                                    NULL );

    if (!NT_SUCCESS(RC)) {
        UDFPrintErr(("UDFInvalidateVolumes: can't get handle, RC=%x\n", RC));
        Irp->IoStatus.Status = RC;
        return RC;
    }

    //  We only needed the pointer, not a reference.
    ObDereferenceObject( FileToMarkBad );

    //  Grab the DeviceObject from the FileObject.
    DeviceToMarkBad = FileToMarkBad->DeviceObject;

    //  Create a new Vpb for this device so that any new opens will mount
    //  a new volume.
    NewVpb = (PVPB)DbgAllocatePoolWithTag( NonPagedPool, sizeof( VPB ), 'bpvU' );
    if(!NewVpb) {
        UDFPrintErr(("UDFInvalidateVolumes: STATUS_INSUFFICIENT_RESOURCES\n"));
        Irp->IoStatus.Status = STATUS_INSUFFICIENT_RESOURCES;
        return STATUS_INSUFFICIENT_RESOURCES;
    }
    RtlZeroMemory( NewVpb, sizeof( VPB ) );

    NewVpb->Type = IO_TYPE_VPB;
    NewVpb->Size = sizeof( VPB );
    NewVpb->RealDevice = DeviceToMarkBad;
    NewVpb->Flags = DeviceToMarkBad->Vpb->Flags & VPB_REMOVE_PENDING;

    // Acquire GlobalDataResource
    UDFAcquireResourceExclusive(&(UDFGlobalData.GlobalDataResource), TRUE);

    //  Nothing can go wrong now.
    IoAcquireVpbSpinLock( &SavedIrql );
    if (DeviceToMarkBad->Vpb->Flags & VPB_MOUNTED) {
        DeviceToMarkBad->Vpb = NewVpb;
        NewVpb = NULL;
    }
    ASSERT( DeviceToMarkBad->Vpb->DeviceObject == NULL );
    IoReleaseVpbSpinLock( SavedIrql );

    if (NewVpb) {
        DbgFreePool( NewVpb );
    }

    // Walk through all of the Vcb's attached to the global data.
    Link = UDFGlobalData.VCBQueue.Flink;

    //ASSERT(FALSE);

    while (Link != &(UDFGlobalData.VCBQueue)) {
        // Get 'next' Vcb
        Vcb = CONTAINING_RECORD( Link, VCB, NextVCB );
        // Move to the next link now since the current Vcb may be deleted.
        Link = Link->Flink;

        // Acquire Vcb resource
        UDFAcquireResourceExclusive(&(Vcb->VCBResource), TRUE);

        if (Vcb->Vpb->RealDevice == DeviceToMarkBad) {

            if(!Buf) {
                Buf = (PPREVENT_MEDIA_REMOVAL_USER_IN)MyAllocatePool__(NonPagedPool, sizeof(PREVENT_MEDIA_REMOVAL_USER_IN)*2);
                if(!Buf) {
                    UDFPrintErr(("UDFInvalidateVolumes: STATUS_INSUFFICIENT_RESOURCES (2)\n"));
                    UDFReleaseResource(&(Vcb->VCBResource));
                    MyFreePool__(NewVpb);
                    Irp->IoStatus.Status = STATUS_INSUFFICIENT_RESOURCES;
                    return STATUS_INSUFFICIENT_RESOURCES;
                }
            }

#ifdef UDF_DELAYED_CLOSE
            UDFPrint(("    UDFInvalidateVolumes:     set UDF_VCB_FLAGS_NO_DELAYED_CLOSE\n"));
            Vcb->VCBFlags |= UDF_VCB_FLAGS_NO_DELAYED_CLOSE;
            UDFReleaseResource(&(Vcb->VCBResource));
#endif //UDF_DELAYED_CLOSE

            if(Vcb->RootDirFCB && Vcb->RootDirFCB->FileInfo) {
                UDFPrint(("    UDFInvalidateVolumes:     UDFCloseAllSystemDelayedInDir\n"));
                RC = UDFCloseAllSystemDelayedInDir(Vcb, Vcb->RootDirFCB->FileInfo);
                ASSERT(OS_SUCCESS(RC));
            }
#ifdef UDF_DELAYED_CLOSE
            UDFPrint(("    UDFInvalidateVolumes:     UDFCloseAllDelayed\n"));
            UDFCloseAllDelayed(Vcb);
            //ASSERT(OS_SUCCESS(RC));
#endif //UDF_DELAYED_CLOSE

            UDFAcquireResourceExclusive(&(Vcb->VCBResource), TRUE);

            UDFDoDismountSequence(Vcb, Buf, FALSE);
            UDFReleaseResource(&(Vcb->VCBResource));

            UDFStopEjectWaiter(Vcb);
            UDFPrint(("UDFInvalidateVolumes: Vcb %x dismounted\n", Vcb));
            break;
        } else {
            UDFPrint(("UDFInvalidateVolumes: skip Vcb %x\n", Vcb));
            UDFReleaseResource(&(Vcb->VCBResource));
        }

    }
    // Once we have processed all the mounted logical volumes, we can release
    // all acquired global resources and leave (in peace :-)
    UDFReleaseResource( &(UDFGlobalData.GlobalDataResource) );

    Irp->IoStatus.Status = STATUS_SUCCESS;

    if(Buf) {
        UDFPrint(("UDFInvalidateVolumes: free buffer\n"));
        MyFreePool__(Buf);
    }

    // drop volume completly
    UDFPrint(("UDFInvalidateVolumes: drop volume completly\n"));
    UDFAcquireResourceExclusive(&(UDFGlobalData.GlobalDataResource), TRUE);
    UDFScanForDismountedVcb(IrpContext);
    UDFReleaseResource( &(UDFGlobalData.GlobalDataResource) );

    UDFPrint(("UDFInvalidateVolumes: done\n"));
    return STATUS_SUCCESS;

} // end UDFInvalidateVolumes()

Referenced by UDFCommonDeviceControl(), and UDFUserFsCtrlRequest().

UDFIsPathnameValid()

NTSTATUS UDFIsPathnameValid	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp
	)

Definition at line 1660 of file fscntrl.cpp.

{
    PEXTENDED_IO_STACK_LOCATION IrpSp = (PEXTENDED_IO_STACK_LOCATION)IoGetCurrentIrpStackLocation( Irp );
    NTSTATUS                    RC;
    PPATHNAME_BUFFER            PathnameBuffer;
    UNICODE_STRING              PathName;
    UNICODE_STRING              CurName;
    PWCHAR                      TmpBuffer;

    UDFPrint(("UDFIsPathnameValid\n"));

    // Extract the pathname
    PathnameBuffer = (PPATHNAME_BUFFER)Irp->AssociatedIrp.SystemBuffer;
    PathName.Buffer = PathnameBuffer->Name;
    PathName.Length = (USHORT)PathnameBuffer->PathNameLength;

    _SEH2_TRY {
        //  Check for an invalid buffer
        if (FIELD_OFFSET(PATHNAME_BUFFER, Name[0]) + PathnameBuffer->PathNameLength >
            IrpSp->Parameters.FileSystemControl.InputBufferLength) {
            try_return( RC = STATUS_INVALID_PARAMETER);
        }
        while (TRUE) {
            // get next path part...
            TmpBuffer = PathName.Buffer;
            PathName.Buffer = UDFDissectName(PathName.Buffer,&(CurName.Length) );
            PathName.Length -= (USHORT)((ULONG_PTR)(PathName.Buffer) - (ULONG_PTR)TmpBuffer);
            CurName.Buffer = PathName.Buffer - CurName.Length;
            CurName.Length *= sizeof(WCHAR);
            CurName.MaximumLength -= CurName.Length;

            if (CurName.Length) {
                // check path fragment size
                if (CurName.Length > UDF_NAME_LEN*sizeof(WCHAR)) {
                    try_return(RC = STATUS_OBJECT_NAME_INVALID);
                }
                if (!UDFIsNameValid(&CurName, NULL, NULL)) {
                    try_return(RC = STATUS_OBJECT_NAME_INVALID);
                }
            } else {
                try_return(RC = STATUS_SUCCESS);
            }
        }
try_exit:   NOTHING;
    } _SEH2_FINALLY {
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = RC;
    } _SEH2_END;

    return RC;
} // end UDFIsPathnameValid()

Referenced by UDFUserFsCtrlRequest().

UDFIsVolumeDirty()

NTSTATUS UDFIsVolumeDirty	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp
	)

Definition at line 2367 of file fscntrl.cpp.

{
    PULONG VolumeState;
    PEXTENDED_IO_STACK_LOCATION IrpSp =
        (PEXTENDED_IO_STACK_LOCATION)IoGetCurrentIrpStackLocation( Irp );

    PVCB Vcb;
    PtrUDFFCB Fcb;
    PtrUDFCCB Ccb;

    UDFPrint(("UDFIsVolumeDirty\n"));

    Irp->IoStatus.Information = 0;

    if (Irp->AssociatedIrp.SystemBuffer != NULL) {
        VolumeState = (PULONG)(Irp->AssociatedIrp.SystemBuffer);
    } else if (Irp->MdlAddress != NULL) {
        VolumeState = (PULONG)MmGetSystemAddressForMdl(Irp->MdlAddress);
    } else {
        UDFPrintErr(("  STATUS_INVALID_USER_BUFFER\n"));
        Irp->IoStatus.Status = STATUS_INVALID_USER_BUFFER;
        return STATUS_INVALID_USER_BUFFER;
    }

    if (IrpSp->Parameters.FileSystemControl.OutputBufferLength < sizeof(ULONG)) {
        UDFPrintErr(("  STATUS_BUFFER_TOO_SMALL\n"));
        Irp->IoStatus.Status = STATUS_BUFFER_TOO_SMALL;
        return STATUS_BUFFER_TOO_SMALL;
    }

    (*VolumeState) = 0;

    // Decode the file object, the only type of opens we accept are
    // user volume opens.
    Ccb = (PtrUDFCCB)(IrpSp->FileObject->FsContext2);
    if(!Ccb) {
        UDFPrintErr(("  !Ccb\n"));
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }
    Fcb = Ccb->Fcb;
    Vcb = Fcb->Vcb;

    if(Vcb != (PVCB)Fcb || !(Ccb->CCBFlags & UDF_CCB_VOLUME_OPEN)) {
        UDFPrintErr(("  !Volume\n"));
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }

    if(!(Vcb->VCBFlags & UDF_VCB_FLAGS_VOLUME_MOUNTED)) {
        UDFPrintErr(("  !Mounted\n"));
        Irp->IoStatus.Status = STATUS_VOLUME_DISMOUNTED;
        return STATUS_VOLUME_DISMOUNTED;
    }

    if(Vcb->origIntegrityType == INTEGRITY_TYPE_OPEN) {
        UDFPrint(("  Dirty\n"));
        (*VolumeState) |= VOLUME_IS_DIRTY;
        Irp->IoStatus.Information = sizeof(ULONG);
    } else {
        UDFPrint(("  Clean\n"));
    }
    Irp->IoStatus.Status = STATUS_SUCCESS;

    return STATUS_SUCCESS;

} // end UDFIsVolumeDirty()

Referenced by UDFCommonDeviceControl(), and UDFUserFsCtrlRequest().

UDFIsVolumeMounted()

NTSTATUS UDFIsVolumeMounted	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp
	)

Definition at line 1552 of file fscntrl.cpp.

{
    PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation( Irp );

    PtrUDFFCB Fcb;
    PtrUDFCCB Ccb;

    UDFPrint(("UDFIsVolumeMounted\n"));

    Ccb = (PtrUDFCCB)IrpSp->FileObject->FsContext2;
    if(!Ccb) {
        UDFPrintErr(("  !Ccb\n"));
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }
    Fcb = Ccb->Fcb;

    if(Fcb &&
       !(Fcb->Vcb->VCBFlags & UDF_VCB_FLAGS_RAW_DISK) &&
       !(Fcb->Vcb->VCBFlags & UDF_VCB_FLAGS_VOLUME_LOCKED) ) {

        // Disable PopUps, we want to return any error.
        IrpContext->IrpContextFlags |= UDF_IRP_CONTEXT_FLAG_DISABLE_POPUPS;

        // Verify the Vcb.  This will raise in the error condition.
        UDFVerifyVcb( IrpContext, Fcb->Vcb );
    }

    Irp->IoStatus.Information = 0;
    Irp->IoStatus.Status = STATUS_SUCCESS;

    return STATUS_SUCCESS;
} // end UDFIsVolumeMounted()

Referenced by UDFUserFsCtrlRequest().

UDFLockVolume()

NTSTATUS UDFLockVolume	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp,
		IN ULONG	PID
	)

Definition at line 1724 of file fscntrl.cpp.

{
    NTSTATUS RC;

    KIRQL SavedIrql;
    PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation( Irp );

    PVCB Vcb;
    PtrUDFFCB Fcb;
    PtrUDFCCB Ccb;
    BOOLEAN VcbAcquired = FALSE;

    UDFPrint(("UDFLockVolume: PID %x\n", PID));

    //  Decode the file object, the only type of opens we accept are
    //  user volume opens.
    Ccb = (PtrUDFCCB)(IrpSp->FileObject->FsContext2);
    if(!Ccb) {
        UDFPrintErr(("  !Ccb\n"));
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }
    Fcb = Ccb->Fcb;
    Vcb = Fcb->Vcb;

    // Check for volume open
    if (Vcb != (PVCB)Fcb || !(Ccb->CCBFlags & UDF_CCB_VOLUME_OPEN)) {
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }

    UDFNotifyVolumeEvent(IrpSp->FileObject, FSRTL_VOLUME_LOCK);

    _SEH2_TRY {

        if(!(Vcb->VCBFlags & UDF_VCB_FLAGS_RAW_DISK))
            UDFCloseAllSystemDelayedInDir(Vcb, Vcb->RootDirFCB->FileInfo);
#ifdef UDF_DELAYED_CLOSE
        UDFCloseAllDelayed(Vcb);
#endif //UDF_DELAYED_CLOSE

        //  Acquire exclusive access to the Vcb.
        UDFAcquireResourceExclusive(&(Vcb->VCBResource), TRUE );
        VcbAcquired = TRUE;

        //  Verify the Vcb.
        UDFVerifyVcb( IrpContext, Vcb );

        //  If the volume is already locked then complete with success if this file
        //  object has the volume locked, fail otherwise.
/*        if (Vcb->VCBFlags & UDF_VCB_FLAGS_VOLUME_LOCKED) {

            if (Vcb->VolumeLockFileObject == IrpSp->FileObject) {
                RC = STATUS_SUCCESS;
            } else {
                RC = STATUS_ACCESS_DENIED;
            }
        //  If the open count for the volume is greater than 1 then this request
        //  will fail.
        } else if (Vcb->VCBOpenCount > UDF_RESIDUAL_REFERENCE+1) {
            RC = STATUS_ACCESS_DENIED;
        //  We will try to get rid of all of the user references.  If there is only one
        //  remaining after the purge then we can allow the volume to be locked.
        } else {
            // flush system cache
            UDFReleaseResource( &(Vcb->VCBResource) );
            VcbAcquired = FALSE;
        }*/

    } _SEH2_FINALLY {

        //  Release the Vcb.
        if(VcbAcquired) {
            UDFReleaseResource( &(Vcb->VCBResource) );
            VcbAcquired = FALSE;
        }
    } _SEH2_END;

    UDFAcquireResourceExclusive(&(Vcb->VCBResource), TRUE );
    VcbAcquired = TRUE;
    UDFFlushLogicalVolume(NULL, NULL, Vcb/*, 0*/);
    UDFReleaseResource( &(Vcb->VCBResource) );
    VcbAcquired = FALSE;
    //  Check if the Vcb is already locked, or if the open file count
    //  is greater than 1 (which implies that someone else also is
    //  currently using the volume, or a file on the volume).
    IoAcquireVpbSpinLock( &SavedIrql );

    if (!(Vcb->Vpb->Flags & VPB_LOCKED) &&
        (Vcb->VolumeLockPID == (ULONG)-1) &&
        (Vcb->VCBOpenCount <= UDF_RESIDUAL_REFERENCE+1) &&
        (Vcb->Vpb->ReferenceCount == 2)) {

        // Mark volume as locked
        if(PID == (ULONG)-1) {
            Vcb->Vpb->Flags |= VPB_LOCKED;
        }
        Vcb->VCBFlags |= UDF_VCB_FLAGS_VOLUME_LOCKED;
        Vcb->VolumeLockFileObject = IrpSp->FileObject;
        Vcb->VolumeLockPID        = PID;

        RC = STATUS_SUCCESS;

    } else {

        RC = STATUS_ACCESS_DENIED;
    }

    IoReleaseVpbSpinLock( SavedIrql );

    if(!NT_SUCCESS(RC)) {
        UDFNotifyVolumeEvent(IrpSp->FileObject, FSRTL_VOLUME_LOCK_FAILED);
    }

    //  Complete the request if there haven't been any exceptions.
    Irp->IoStatus.Information = 0;
    Irp->IoStatus.Status = RC;
    return RC;
} // end UDFLockVolume()

Referenced by UDFCommonDeviceControl(), and UDFUserFsCtrlRequest().

UDFMountVolume()

NTSTATUS NTAPI UDFMountVolume	(	IN PtrUDFIrpContext	PtrIrpContext,
		IN PIRP	Irp
	)

Definition at line 315 of file fscntrl.cpp.

{
    NTSTATUS                RC;
    PIO_STACK_LOCATION      IrpSp = IoGetCurrentIrpStackLocation(Irp);
    PDEVICE_OBJECT          TargetDeviceObject = NULL;
    PFILTER_DEV_EXTENSION   filterDevExt;
    PDEVICE_OBJECT          fsDeviceObject;
    PVPB                    Vpb = IrpSp->Parameters.MountVolume.Vpb;
    PVCB                    Vcb = NULL;
//    PVCB                    OldVcb = NULL;
    PDEVICE_OBJECT          VolDo = NULL;
    IO_STATUS_BLOCK         Iosb;
    ULONG                   MediaChangeCount = 0;
    ULONG                   Characteristics;
    DEVICE_TYPE             FsDeviceType;
    BOOLEAN                 RestoreDoVerify = FALSE;
    BOOLEAN                 WrongMedia = FALSE;
    BOOLEAN                 RemovableMedia = TRUE;
    BOOLEAN                 CompleteIrp = FALSE;
    ULONG                   Mode;
    TEST_UNIT_READY_USER_OUT TestUnitReadyBuffer;
    ULONG                   i;
    LARGE_INTEGER           delay;
    BOOLEAN                 VcbAcquired = FALSE;
    BOOLEAN                 DeviceNotTouched = TRUE;
    BOOLEAN                 Locked = FALSE;
    int8*                   ioBuf = NULL;

    ASSERT(IrpSp);
    UDFPrint(("\n !!! UDFMountVolume\n"));
//    UDFPrint(("Build " VER_STR_PRODUCT "\n\n"));

    fsDeviceObject = PtrIrpContext->TargetDeviceObject;
    UDFPrint(("Mount on device object %x\n", fsDeviceObject));
    filterDevExt = (PFILTER_DEV_EXTENSION)fsDeviceObject->DeviceExtension;
    if (filterDevExt->NodeIdentifier.NodeType == UDF_NODE_TYPE_FILTER_DEVOBJ &&
        filterDevExt->NodeIdentifier.NodeSize == sizeof(FILTER_DEV_EXTENSION)) {
        CompleteIrp = FALSE;
    } else
    if (filterDevExt->NodeIdentifier.NodeType == UDF_NODE_TYPE_UDFFS_DEVOBJ &&
        filterDevExt->NodeIdentifier.NodeSize == sizeof(UDFFS_DEV_EXTENSION)) {
        CompleteIrp = TRUE;
    } else {
        UDFPrintErr(("Invalid node type in FS or FILTER DeviceObject\n"));
        ASSERT(FALSE);
    }
    // Get a pointer to the target physical/virtual device object.
    TargetDeviceObject = IrpSp->Parameters.MountVolume.DeviceObject;

    if(((Characteristics = TargetDeviceObject->Characteristics) & FILE_FLOPPY_DISKETTE) ||
       (UDFGlobalData.UDFFlags & UDF_DATA_FLAGS_BEING_UNLOADED) ) {
        WrongMedia = TRUE;
    } else {
        RemovableMedia = (Characteristics & FILE_REMOVABLE_MEDIA) ? TRUE : FALSE;
        if(TargetDeviceObject->DeviceType != FILE_DEVICE_CD_ROM) {
            if(UDFGetRegParameter(NULL, REG_MOUNT_ON_CDONLY_NAME, TRUE)) {
                WrongMedia = TRUE;
            }
        }
        if(TargetDeviceObject->DeviceType == FILE_DEVICE_CD_ROM) {
            FsDeviceType = FILE_DEVICE_CD_ROM_FILE_SYSTEM;
#ifdef UDF_HDD_SUPPORT
        } else
        if (TargetDeviceObject->DeviceType == FILE_DEVICE_DISK) {
            if(RemovableMedia) {
                if(!UDFGetRegParameter(NULL, REG_MOUNT_ON_ZIP_NAME, FALSE)) {
                    WrongMedia = TRUE;
                }
            } else {
                if(!UDFGetRegParameter(NULL, REG_MOUNT_ON_HDD_NAME, FALSE)) {
                    WrongMedia = TRUE;
                }
            }
            FsDeviceType = FILE_DEVICE_DISK_FILE_SYSTEM;
#endif //UDF_HDD_SUPPORT
        } else {
            WrongMedia = TRUE;
        }
    }

    // Acquire GlobalDataResource
    UDFAcquireResourceExclusive(&(UDFGlobalData.GlobalDataResource), TRUE);

    _SEH2_TRY {

        UDFScanForDismountedVcb(PtrIrpContext);

        if(WrongMedia) try_return(RC = STATUS_UNRECOGNIZED_VOLUME);

        if(RemovableMedia) {
            UDFPrint(("UDFMountVolume: removable media\n"));
            // just remember current MediaChangeCount
            // or fail if No Media ....

            // experimental CHECK_VERIFY, for fucking BENQ DVD_DD_1620

                // Now we can get device state via GET_EVENT (if supported)
                // or still one TEST_UNIT_READY command
                RC = UDFPhSendIOCTL( IOCTL_STORAGE_CHECK_VERIFY,
                                     TargetDeviceObject,
                                     NULL,0,
                                     &MediaChangeCount,sizeof(ULONG),
                                     FALSE,&Iosb );

            // Send TEST_UNIT_READY comment
            // This can spin-up or wake-up the device
            if(UDFGetRegParameter(NULL, UDF_WAIT_CD_SPINUP, TRUE)) {
                delay.QuadPart = -15000000LL; // 1.5 sec
                for(i=0; i<UDF_READY_MAX_RETRY; i++) {
                    // Use device default ready timeout
                    Mode = 0;
                    RC = UDFPhSendIOCTL( IOCTL_CDRW_TEST_UNIT_READY,
                                         TargetDeviceObject,
                                         &Mode,sizeof(Mode),
                                         &TestUnitReadyBuffer,sizeof(TEST_UNIT_READY_USER_OUT),
                                         FALSE,NULL);
                    UDFPrint(("UDFMountVolume: TEST_UNIT_READY %x\n", RC));
                    if(!NT_SUCCESS(RC))
                        break;
                    if(TestUnitReadyBuffer.SenseKey == SCSI_SENSE_NOT_READY &&
                       TestUnitReadyBuffer.AdditionalSenseCode == SCSI_ADSENSE_LUN_NOT_READY &&
                       TestUnitReadyBuffer.AdditionalSenseCodeQualifier == SCSI_SENSEQ_BECOMING_READY) {
                        UDFPrint(("UDFMountVolume: retry\n"));
                        KeDelayExecutionThread(KernelMode, FALSE, &delay);
                        //delay.QuadPart -= 10000000LL; // 1.0 sec
                    } else {
                        break;
                    }
                }
                if(i) {
                    UDFPrint(("UDFMountVolume: additional delay 3 sec\n"));
                    delay.QuadPart = -30000000LL; // 3.0 sec
                    KeDelayExecutionThread(KernelMode, FALSE, &delay);
                }
            }

            // Now we can get device state via GET_EVENT (if supported)
            // or still one TEST_UNIT_READY command
            RC = UDFPhSendIOCTL( IOCTL_STORAGE_CHECK_VERIFY,
                                 TargetDeviceObject,
                                 NULL,0,
                                 &MediaChangeCount,sizeof(ULONG),
                                 FALSE,&Iosb );

            if(RC == STATUS_IO_DEVICE_ERROR) {
                UDFPrint(("UDFMountVolume: retry check verify\n"));
                RC = UDFPhSendIOCTL( IOCTL_STORAGE_CHECK_VERIFY,
                                     TargetDeviceObject,
                                     NULL,0,
                                     &MediaChangeCount,sizeof(ULONG),
                                     FALSE,&Iosb );
            }

            if(!NT_SUCCESS(RC) && (RC != STATUS_VERIFY_REQUIRED))
                try_return(RC);

            //  Be safe about the count in case the driver didn't fill it in
            if(Iosb.Information != sizeof(ULONG)) {
                MediaChangeCount = 0;
            }

            if(FsDeviceType == FILE_DEVICE_CD_ROM_FILE_SYSTEM) {
                // Check if device is busy before locking tray and performing
                // further geomentry discovery. This is needed to avoid streaming
                // loss during CD-R recording. Note, that some recording tools
                // work with device via SPTI bypassing FS/Device driver layers.

                ioBuf = (int8*)MyAllocatePool__(NonPagedPool,4096);
                if(!ioBuf) {
                    try_return(RC = STATUS_INSUFFICIENT_RESOURCES);
                }
                RC = UDFPhSendIOCTL(IOCTL_CDROM_GET_DRIVE_GEOMETRY,TargetDeviceObject,
                    ioBuf,sizeof(DISK_GEOMETRY),
                    ioBuf,sizeof(DISK_GEOMETRY),
                    FALSE, NULL );

                if(RC == STATUS_DEVICE_NOT_READY) {
                    // probably, the device is really busy, may be by CD/DVD recording
                    UserPrint(("  busy (*)\n"));
                    try_return(RC);
                }
            }

            // lock media for now
            if(!WrongMedia) {
                ((PPREVENT_MEDIA_REMOVAL_USER_IN)(&MediaChangeCount))->PreventMediaRemoval = TRUE;
                RC = UDFPhSendIOCTL( IOCTL_STORAGE_MEDIA_REMOVAL,
                                     TargetDeviceObject,
                                     &MediaChangeCount,sizeof(PREVENT_MEDIA_REMOVAL_USER_IN),
                                     NULL,0,
                                     FALSE,NULL);
                Locked = TRUE;
            }

        }
        // Now before we can initialize the Vcb we need to set up the
        // Get our device object and alignment requirement.
        // Device extension == VCB
        UDFPrint(("UDFMountVolume: create device\n"));
        RC = IoCreateDevice( UDFGlobalData.DriverObject,
                                 sizeof(VCB),
                                 NULL,
                                 FsDeviceType,
                                 0,
                                 FALSE,
                                 &VolDo );

        if(!NT_SUCCESS(RC)) try_return(RC);

        // Our alignment requirement is the larger of the processor alignment requirement
        // already in the volume device object and that in the DeviceObjectWeTalkTo
        if(TargetDeviceObject->AlignmentRequirement > VolDo->AlignmentRequirement) {
            VolDo->AlignmentRequirement = TargetDeviceObject->AlignmentRequirement;
        }

        VolDo->Flags &= ~DO_DEVICE_INITIALIZING;

        // device object field in the VPB to point to our new volume device
        // object.
        Vpb->DeviceObject = (PDEVICE_OBJECT) VolDo;

        // We must initialize the stack size in our device object before
        // the following reads, because the I/O system has not done it yet.
        ((PDEVICE_OBJECT)VolDo)->StackSize = (CCHAR) (TargetDeviceObject->StackSize + 1);

        Vcb = (PVCB)VolDo->DeviceExtension;

        // Initialize the Vcb.  This routine will raise on an allocation
        // failure.
        RC = UDFInitializeVCB(VolDo,TargetDeviceObject,Vpb);
        if(!NT_SUCCESS(RC)) {
            Vcb = NULL;
            try_return(RC);
        }

        VolDo = NULL;
        Vpb = NULL;

        UDFAcquireResourceExclusive(&(Vcb->VCBResource), TRUE );
        VcbAcquired = TRUE;

        // Let's reference the Vpb to make sure we are the one to
        // have the last dereference.
        Vcb->Vpb->ReferenceCount ++;

        Vcb->MediaChangeCount = MediaChangeCount;
        Vcb->FsDeviceType = FsDeviceType;

        // Clear the verify bit for the start of mount.
        if(Vcb->Vpb->RealDevice->Flags & DO_VERIFY_VOLUME) {
            Vcb->Vpb->RealDevice->Flags &= ~DO_VERIFY_VOLUME;
            RestoreDoVerify = TRUE;
        }

        DeviceNotTouched = FALSE;
        RC = UDFGetDiskInfo(TargetDeviceObject,Vcb);
        if(!NT_SUCCESS(RC)) try_return(RC);

        //     ****  Read registry settings  ****
        UDFReadRegKeys(Vcb, FALSE, FALSE);

        Vcb->MountPhErrorCount = 0;

        // Initialize internal cache
        Mode = WCACHE_MODE_ROM;
        RC = WCacheInit__(&(Vcb->FastCache),
                          Vcb->WCacheMaxFrames,
                          Vcb->WCacheMaxBlocks,
                          Vcb->WriteBlockSize,
                          5, Vcb->BlockSizeBits,
                          Vcb->WCacheBlocksPerFrameSh,
                          0/*Vcb->FirstLBA*/, Vcb->LastPossibleLBA, Mode,
                              0/*WCACHE_CACHE_WHOLE_PACKET*/ |
                              (Vcb->DoNotCompareBeforeWrite ? WCACHE_DO_NOT_COMPARE : 0) |
                              (Vcb->CacheChainedIo ? WCACHE_CHAINED_IO : 0) |
                              WCACHE_MARK_BAD_BLOCKS | WCACHE_RO_BAD_BLOCKS,  // this will be cleared after mount
                          Vcb->WCacheFramesToKeepFree,
//                          UDFTWrite, UDFTRead,
                          UDFTWriteVerify, UDFTReadVerify,
#ifdef UDF_ASYNC_IO
                          UDFTWriteAsync, UDFTReadAsync,
#else  //UDF_ASYNC_IO
                          NULL, NULL,
#endif //UDF_ASYNC_IO
                          UDFIsBlockAllocated,
                          UDFUpdateVAT,
                          UDFWCacheErrorHandler);
        if(!NT_SUCCESS(RC)) try_return(RC);

        RC = UDFVInit(Vcb);
        if(!NT_SUCCESS(RC)) try_return(RC);

        UDFAcquireResourceExclusive(&(Vcb->BitMapResource1),TRUE);
        RC = UDFGetDiskInfoAndVerify(TargetDeviceObject,Vcb);
        UDFReleaseResource(&(Vcb->BitMapResource1));

        ASSERT(!Vcb->Modified);
        WCacheChFlags__(&(Vcb->FastCache),
                        WCACHE_CACHE_WHOLE_PACKET, // enable cache whole packet
                        WCACHE_MARK_BAD_BLOCKS | WCACHE_RO_BAD_BLOCKS);  // let user retry request on Bad Blocks

#ifdef UDF_READ_ONLY_BUILD
        Vcb->VCBFlags |= UDF_VCB_FLAGS_VOLUME_READ_ONLY;
        Vcb->VCBFlags |= UDF_VCB_FLAGS_MEDIA_READ_ONLY;
#endif //UDF_READ_ONLY_BUILD

        if(!NT_SUCCESS(RC)) {
            UDFPrint(("UDFMountVolume: try raw mount\n"));
            if(Vcb->NSRDesc & VRS_ISO9660_FOUND) {
                UDFPrint(("UDFMountVolume: block raw mount due to ISO9660 presence\n"));
                Vcb->VCBFlags &= ~UDF_VCB_FLAGS_RAW_DISK;
                try_return(RC);
            }
try_raw_mount:
            UDFPrint(("UDFMountVolume: try raw mount (2)\n"));
            if(Vcb->VCBFlags & UDF_VCB_FLAGS_RAW_DISK) {

                UDFPrint(("UDFMountVolume: trying raw mount...\n"));
                Vcb->VolIdent.Length =
                (Vcb->VolIdent.MaximumLength = sizeof(UDF_BLANK_VOLUME_LABEL)) - 2;
                if(Vcb->VolIdent.Buffer)
                    MyFreePool__(Vcb->VolIdent.Buffer);
                Vcb->VolIdent.Buffer = (PWCHAR)MyAllocatePool__(NonPagedPool, sizeof(UDF_BLANK_VOLUME_LABEL));
                if(!Vcb->VolIdent.Buffer)
                    try_return(STATUS_INSUFFICIENT_RESOURCES);
                RtlCopyMemory(Vcb->VolIdent.Buffer, UDF_BLANK_VOLUME_LABEL, sizeof(UDF_BLANK_VOLUME_LABEL));

                RC = UDFBlankMount(Vcb);
                if(!NT_SUCCESS(RC)) try_return(RC);

            } else {
//                Vcb->VCBFlags &= ~UDF_VCB_FLAGS_RAW_DISK;
                try_return(RC);
            }
        } else {
            Vcb->MountPhErrorCount = -1;
#ifndef UDF_READ_ONLY_BUILD
            // set cache mode according to media type
            if(!(Vcb->VCBFlags & UDF_VCB_FLAGS_MEDIA_READ_ONLY)) {
                UDFPrint(("UDFMountVolume: writable volume\n"));
                if(!Vcb->CDR_Mode) {
                    if((FsDeviceType == FILE_DEVICE_DISK_FILE_SYSTEM) ||
                       CdrwMediaClassEx_IsRAM(Vcb->MediaClassEx)) {
                        UDFPrint(("UDFMountVolume: RAM mode\n"));
                        Mode = WCACHE_MODE_RAM;
                    } else {
                        UDFPrint(("UDFMountVolume: RW mode\n"));
                        Mode = WCACHE_MODE_RW;
                    }
/*                    if(FsDeviceType == FILE_DEVICE_CD_ROM_FILE_SYSTEM) {
                    } else {
                        Vcb->WriteSecurity = TRUE;
                    }*/
                } else {
                    UDFPrint(("UDFMountVolume: R mode\n"));
                    Mode = WCACHE_MODE_R;
                }
                // we can't record ACL on old format disks
                if(!UDFNtAclSupported(Vcb)) {
                    UDFPrint(("UDFMountVolume: NO ACL and ExtFE support\n"));
                    Vcb->WriteSecurity = FALSE;
                    Vcb->UseExtendedFE = FALSE;
                }
            }
            WCacheSetMode__(&(Vcb->FastCache), Mode);
#endif //UDF_READ_ONLY_BUILD
            // Complete mount operations: create root FCB
            UDFAcquireResourceExclusive(&(Vcb->BitMapResource1),TRUE);
            RC = UDFCompleteMount(Vcb);
            UDFReleaseResource(&(Vcb->BitMapResource1));
            if(!NT_SUCCESS(RC)) {
                // We must have Vcb->VCBOpenCount = 1 for UDFBlankMount()
                // Thus, we should not decrement it here
                // Also, if we shall not perform BlankMount,
                // but simply cleanup and return error, Vcb->VCBOpenCount
                // will be decremented during cleanup. Thus anyway it must
                // stay 1 unchanged here
                //UDFInterlockedDecrement((PLONG)&(Vcb->VCBOpenCount));
                UDFCloseResidual(Vcb);
                Vcb->VCBOpenCount = 1;
                if(FsDeviceType == FILE_DEVICE_CD_ROM_FILE_SYSTEM)
                    Vcb->VCBFlags |= UDF_VCB_FLAGS_RAW_DISK;
                goto try_raw_mount;
            }
            Vcb->VCBFlags &= ~UDF_VCB_FLAGS_RAW_DISK;
        }

#ifndef UDF_READ_ONLY_BUILD
        if(!(Vcb->VCBFlags & UDF_VCB_FLAGS_MEDIA_READ_ONLY)) {
            RC = UDFStartEjectWaiter(Vcb);
            if(!NT_SUCCESS(RC)) try_return(RC);
        } else {
            UDFPrint(("UDFMountVolume: RO mount\n"));
            Vcb->VCBFlags |= UDF_VCB_FLAGS_VOLUME_READ_ONLY;
        }
#endif //UDF_READ_ONLY_BUILD

        Vcb->Vpb->SerialNumber = Vcb->PhSerialNumber;
        Vcb->Vpb->VolumeLabelLength = Vcb->VolIdent.Length;
        RtlCopyMemory( Vcb->Vpb->VolumeLabel,
                       Vcb->VolIdent.Buffer,
                       Vcb->VolIdent.Length );

        Vcb->VCBFlags |= UDF_VCB_FLAGS_VOLUME_MOUNTED;

        UDFInterlockedDecrement((PLONG)&(Vcb->VCBOpenCount));
        Vcb->TotalAllocUnits = UDFGetTotalSpace(Vcb);
        Vcb->FreeAllocUnits = UDFGetFreeSpace(Vcb);
        // Register shutdown routine
        if(!Vcb->ShutdownRegistered) {
            UDFPrint(("UDFMountVolume: Register shutdown routine\n"));
            IoRegisterShutdownNotification(Vcb->VCBDeviceObject);
            Vcb->ShutdownRegistered = TRUE;
        }

        // unlock media
        if(RemovableMedia) {
            if(Vcb->VCBFlags & UDF_VCB_FLAGS_MEDIA_READ_ONLY) {
                UDFPrint(("UDFMountVolume: unlock media on RO volume\n"));
                ((PPREVENT_MEDIA_REMOVAL_USER_IN)(&MediaChangeCount))->PreventMediaRemoval = FALSE;
                UDFPhSendIOCTL( IOCTL_STORAGE_MEDIA_REMOVAL,
                                     TargetDeviceObject,
                                     &MediaChangeCount,sizeof(PREVENT_MEDIA_REMOVAL_USER_IN),
                                     NULL,0,
                                     FALSE,NULL);
                if(Vcb->VCBFlags & UDF_VCB_FLAGS_OUR_DEVICE_DRIVER)
                    UDFResetDeviceDriver(Vcb, Vcb->TargetDeviceObject, TRUE);
            }
        }

        if (UDFGlobalData.MountEvent)
        {
            Vcb->IsVolumeJustMounted = TRUE;
            KeSetEvent(UDFGlobalData.MountEvent, 0, FALSE);
        }

        //  The new mount is complete.
        UDFReleaseResource( &(Vcb->VCBResource) );
        VcbAcquired = FALSE;
        Vcb = NULL;

        RC = STATUS_SUCCESS;

try_exit: NOTHING;
    } _SEH2_FINALLY {

        UDFPrint(("UDFMountVolume: RC = %x\n", RC));

        if(ioBuf) {
            MyFreePool__(ioBuf);
        }

        if(!NT_SUCCESS(RC)) {

            if(RemovableMedia && Locked) {
                UDFPrint(("UDFMountVolume: unlock media\n"));
                ((PPREVENT_MEDIA_REMOVAL_USER_IN)(&MediaChangeCount))->PreventMediaRemoval = FALSE;
                UDFPhSendIOCTL( IOCTL_STORAGE_MEDIA_REMOVAL,
                                     TargetDeviceObject,
                                     &MediaChangeCount,sizeof(PREVENT_MEDIA_REMOVAL_USER_IN),
                                     NULL,0,
                                     FALSE,NULL);
            }
/*            if((RC != STATUS_DEVICE_NOT_READY) &&
               (RC != STATUS_NO_MEDIA_IN_DEVICE) ) {*/
                // reset driver
            if(!DeviceNotTouched &&
               (!Vcb || (Vcb && (Vcb->VCBFlags & UDF_VCB_FLAGS_OUR_DEVICE_DRIVER)))) {
                UDFPrint(("UDFMountVolume: reset driver\n"));
                UDFResetDeviceDriver(Vcb, TargetDeviceObject, TRUE);
            }

            if(RC == STATUS_CRC_ERROR || RC == STATUS_FILE_CORRUPT_ERROR) {
                UDFPrint(("UDFMountVolume: status -> STATUS_UNRECOGNIZED_VOLUME\n"));
                RC = STATUS_UNRECOGNIZED_VOLUME;
            }

            // If we didn't complete the mount then cleanup any remaining structures.
            if(Vpb) {
               Vpb->DeviceObject = NULL;
            }

            if(Vcb) {
                // Restore the verify bit.
                if(RestoreDoVerify) {
                    Vcb->Vpb->RealDevice->Flags |= DO_VERIFY_VOLUME;
                }
                // Make sure there is no Vcb since it could go away
                if(Vcb->VCBOpenCount)
                    UDFInterlockedDecrement((PLONG)&(Vcb->VCBOpenCount));
                // This procedure will also delete the volume device object
                if(UDFDismountVcb( Vcb, VcbAcquired )) {
                    UDFReleaseResource( &(Vcb->VCBResource) );
                }
            } else if(VolDo) {
                IoDeleteDevice( VolDo );
            }
        }
        // Release the global resource.
        UDFReleaseResource( &(UDFGlobalData.GlobalDataResource) );

        if (CompleteIrp || NT_SUCCESS(RC)) {
            if(!_SEH2_AbnormalTermination()) {
                // Set mount event

                UDFPrint(("UDFMountVolume: complete req RC %x\n", RC));
                UDFNotifyVolumeEvent(IrpSp->FileObject, FSRTL_VOLUME_MOUNT);
                // Complete the IRP.
                Irp->IoStatus.Status = RC;
                IoCompleteRequest(Irp, IO_NO_INCREMENT);
            }
        } else {
            // Pass Irp to lower driver (CDFS)

            // Get this driver out of the driver stack and get to the next driver as
            // quickly as possible.
            Irp->CurrentLocation++;
            Irp->Tail.Overlay.CurrentStackLocation++;

            // Now call the appropriate file system driver with the request.
            RC = IoCallDriver( filterDevExt->lowerFSDeviceObject, Irp );

        }

    } _SEH2_END;

    UDFPrint(("UDFMountVolume: final RC = %x\n", RC));
    return RC;

} // end UDFMountVolume()

Referenced by UDFCommonFSControl().

UDFScanForDismountedVcb()

VOID UDFScanForDismountedVcb

(

IN PtrUDFIrpContext

IrpContext

)

Definition at line 1510 of file fscntrl.cpp.

{
    PVCB Vcb;
    PLIST_ENTRY Link;


    // Walk through all of the Vcb's attached to the global data.
    Link = UDFGlobalData.VCBQueue.Flink;

    while (Link != &(UDFGlobalData.VCBQueue)) {

        Vcb = CONTAINING_RECORD( Link, VCB, NextVCB );

        // Move to the next link now since the current Vcb may be deleted.
        Link = Link->Flink;

        // If dismount is already underway then check if this Vcb can
        // go away.
        if((Vcb->VCBFlags & UDF_VCB_FLAGS_BEING_DISMOUNTED) ||
            ((!(Vcb->VCBFlags & UDF_VCB_FLAGS_VOLUME_MOUNTED)) && (Vcb->VCBOpenCount <= UDF_RESIDUAL_REFERENCE))) {

            UDFCheckForDismount( IrpContext, Vcb, FALSE );
        }
    }

    return;
} // end UDFScanForDismountedVcb()

Referenced by UDFInvalidateVolumes(), and UDFMountVolume().

UDFStartEjectWaiter()

NTSTATUS UDFStartEjectWaiter

(

IN PVCB

Vcb

)

(Vcb->VCBFlags & UDF_VCB_FLAGS_MEDIA_LOCKED) &&

Definition at line 850 of file fscntrl.cpp.

{
//    NTSTATUS RC;
    PREVENT_MEDIA_REMOVAL_USER_IN Buff;
    UDFPrint(("UDFStartEjectWaiter:\n"));

    if(Vcb->VCBFlags & UDF_VCB_FLAGS_MEDIA_READ_ONLY) {
        UDFPrint(("  UDF_VCB_FLAGS_MEDIA_READ_ONLY\n"));
    }
    if(Vcb->VCBFlags & UDF_VCB_FLAGS_MEDIA_LOCKED) {
        UDFPrint(("  UDF_VCB_FLAGS_MEDIA_LOCKED\n"));
    }
    UDFPrint(("  EjectWaiter=%x\n", Vcb->EjectWaiter));
    if(!(Vcb->VCBFlags & UDF_VCB_FLAGS_MEDIA_READ_ONLY) &&
       !(Vcb->EjectWaiter)) {

        UDFPrint(("UDFStartEjectWaiter: check driver\n"));
        if(!(Vcb->VCBFlags & UDF_VCB_FLAGS_OUR_DEVICE_DRIVER) &&
            (Vcb->FsDeviceType == FILE_DEVICE_CD_ROM_FILE_SYSTEM)) {
            // we don't know how to write without our device driver
            Vcb->VCBFlags |= UDF_VCB_FLAGS_VOLUME_READ_ONLY;
            UDFPrint(("  not our driver, ignore\n"));
            return STATUS_SUCCESS;
        }
        UDFPrint(("UDFStartEjectWaiter: check removable\n"));
        if(Vcb->VCBFlags & UDF_VCB_FLAGS_REMOVABLE_MEDIA) {
            // prevent media removal
            UDFPrint(("UDFStartEjectWaiter: lock media\n"));
            Buff.PreventMediaRemoval = TRUE;
            UDFTSendIOCTL( IOCTL_STORAGE_MEDIA_REMOVAL,
                           Vcb,
                           &Buff,sizeof(PREVENT_MEDIA_REMOVAL_USER_IN),
                           NULL,0,
                           FALSE,NULL );
            Vcb->VCBFlags |= UDF_VCB_FLAGS_MEDIA_LOCKED;
        }
        UDFPrint(("UDFStartEjectWaiter: prepare to start\n"));
        // initialize Eject Request waiter
        Vcb->EjectWaiter = (PUDFEjectWaitContext)MyAllocatePool__(NonPagedPool, sizeof(UDFEjectWaitContext));
        if(!(Vcb->EjectWaiter)) return STATUS_INSUFFICIENT_RESOURCES;
        KeInitializeEvent(&(Vcb->WaiterStopped), NotificationEvent, FALSE);
        Vcb->EjectWaiter->Vcb = Vcb;
        Vcb->EjectWaiter->SoftEjectReq = FALSE;
        KeInitializeEvent(&(Vcb->EjectWaiter->StopReq), NotificationEvent, FALSE);
//        Vcb->EjectWaiter->StopReq = FALSE;
        Vcb->EjectWaiter->WaiterStopped = &(Vcb->WaiterStopped);
        // This can occure after unexpected media loss, when EjectRequestWaiter
        // terminates automatically
        ASSERT(!(Vcb->VCBFlags & UDF_VCB_FLAGS_STOP_WAITER_EVENT));
        Vcb->VCBFlags |= UDF_VCB_FLAGS_STOP_WAITER_EVENT;
        ExInitializeWorkItem(&(Vcb->EjectWaiter->EjectReqWorkQueueItem), UDFEjectReqWaiter, Vcb->EjectWaiter);
        UDFPrint(("UDFStartEjectWaiter: create thread\n"));
        ExQueueWorkItem(&(Vcb->EjectWaiter->EjectReqWorkQueueItem), DelayedWorkQueue);
    } else {
        UDFPrint(("  ignore\n"));
    }
    return STATUS_SUCCESS;
} // end UDFStartEjectWaiter()

Referenced by UDFMountVolume(), and UDFVerifyVolume().

UDFUnlockVolume()

NTSTATUS UDFUnlockVolume	(	IN PtrUDFIrpContext	IrpContext,
		IN PIRP	Irp,
		IN ULONG	PID
	)

Definition at line 1859 of file fscntrl.cpp.

{
    NTSTATUS RC = STATUS_INVALID_PARAMETER;

    KIRQL SavedIrql;
    PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation( Irp );

    PVCB Vcb;
    PtrUDFFCB Fcb;
    PtrUDFCCB Ccb;

    UDFPrint(("UDFUnlockVolume: PID %x\n", PID));

    //  Decode the file object, the only type of opens we accept are
    //  user volume opens.
    Ccb = (PtrUDFCCB)(IrpSp->FileObject->FsContext2);
    if(!Ccb) {
        UDFPrintErr(("  !Ccb\n"));
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }
    Fcb = Ccb->Fcb;
    Vcb = Fcb->Vcb;

    // Check for volume open
    if(Vcb != (PVCB)Fcb || !(Ccb->CCBFlags & UDF_CCB_VOLUME_OPEN)) {
        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
        return STATUS_INVALID_PARAMETER;
    }

    //  Acquire exclusive access to the Vcb/Vpb.
    IoAcquireVpbSpinLock( &SavedIrql );

    _SEH2_TRY {

        //  We won't check for a valid Vcb for this request.  An unlock will always
        //  succeed on a locked volume.
        if(Vcb->Vpb->Flags & VPB_LOCKED ||
           Vcb->VolumeLockPID == PID) {
            Vcb->Vpb->Flags &= ~VPB_LOCKED;
            Vcb->VCBFlags &= ~UDF_VCB_FLAGS_VOLUME_LOCKED;
            Vcb->VolumeLockFileObject = NULL;
            Vcb->VolumeLockPID = -1;
            UDFNotifyVolumeEvent(IrpSp->FileObject, FSRTL_VOLUME_UNLOCK);
            RC = STATUS_SUCCESS;
        } else {
            RC = STATUS_NOT_LOCKED;
            RC = STATUS_SUCCESS;
            RC = STATUS_VOLUME_DISMOUNTED;
        }

    } _SEH2_FINALLY {
        ;
    } _SEH2_END;

    //  Release all of our resources
    IoReleaseVpbSpinLock( SavedIrql );

    //  Complete the request if there haven't been any exceptions.
    Irp->IoStatus.Information = 0;
    Irp->IoStatus.Status = RC;
    return RC;
} // end UDFUnlockVolume()

Referenced by UDFCommonDeviceControl(), and UDFUserFsCtrlRequest().

UDFUserFsCtrlRequest()

NTSTATUS NTAPI UDFUserFsCtrlRequest	(	PtrUDFIrpContext	IrpContext,
		PIRP	Irp
	)

Definition at line 178 of file fscntrl.cpp.

{
    NTSTATUS RC;
    PEXTENDED_IO_STACK_LOCATION IrpSp = (PEXTENDED_IO_STACK_LOCATION) IoGetCurrentIrpStackLocation( Irp );

    //  Case on the control code.
    switch ( IrpSp->Parameters.FileSystemControl.FsControlCode ) {

    case FSCTL_REQUEST_OPLOCK_LEVEL_1 :
    case FSCTL_REQUEST_OPLOCK_LEVEL_2 :
    case FSCTL_REQUEST_BATCH_OPLOCK :
    case FSCTL_OPLOCK_BREAK_ACKNOWLEDGE :
    case FSCTL_OPBATCH_ACK_CLOSE_PENDING :
    case FSCTL_OPLOCK_BREAK_NOTIFY :
    case FSCTL_OPLOCK_BREAK_ACK_NO_2 :
    case FSCTL_REQUEST_FILTER_OPLOCK :

        UDFPrint(("UDFUserFsCtrlRequest: OPLOCKS\n"));
        RC = STATUS_INVALID_DEVICE_REQUEST;

        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
        break;
/*
        RC = UDFOplockRequest( IrpContext, Irp );
        break;
*/
    case FSCTL_INVALIDATE_VOLUMES :

        RC = UDFInvalidateVolumes( IrpContext, Irp );
        break;
/*
    case FSCTL_MOVE_FILE:

    case FSCTL_QUERY_ALLOCATED_RANGES:
    case FSCTL_SET_ZERO_DATA:
    case FSCTL_SET_SPARSE:

    case FSCTL_MARK_VOLUME_DIRTY:

        RC = UDFDirtyVolume( IrpContext, Irp );
        break;

  */
    case FSCTL_IS_VOLUME_DIRTY:

        RC = UDFIsVolumeDirty(IrpContext, Irp);
        break;

    case FSCTL_ALLOW_EXTENDED_DASD_IO:

        UDFPrint(("UDFUserFsCtrlRequest: FSCTL_ALLOW_EXTENDED_DASD_IO\n"));
        // DASD i/o is always permitted
        // So, no-op this call
        RC = STATUS_SUCCESS;

        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_SUCCESS;
        break;

    case FSCTL_DISMOUNT_VOLUME:

        RC = UDFDismountVolume( IrpContext, Irp );
        break;

    case FSCTL_IS_VOLUME_MOUNTED:

        RC = UDFIsVolumeMounted( IrpContext, Irp );
        break;

    case FSCTL_FILESYSTEM_GET_STATISTICS:

        RC = UDFGetStatistics( IrpContext, Irp );
        break;

    case FSCTL_LOCK_VOLUME:

        RC = UDFLockVolume( IrpContext, Irp );
        break;

    case FSCTL_UNLOCK_VOLUME:

        RC = UDFUnlockVolume( IrpContext, Irp );
        break;

    case FSCTL_IS_PATHNAME_VALID:

        RC = UDFIsPathnameValid( IrpContext, Irp );
        break;

    case FSCTL_GET_VOLUME_BITMAP:

        UDFPrint(("UDFUserFsCtrlRequest: FSCTL_GET_VOLUME_BITMAP\n"));
        RC = UDFGetVolumeBitmap( IrpContext, Irp );
        break;

    case FSCTL_GET_RETRIEVAL_POINTERS:

        UDFPrint(("UDFUserFsCtrlRequest: FSCTL_GET_RETRIEVAL_POINTERS\n"));
        RC = UDFGetRetrievalPointers( IrpContext, Irp, 0 );
        break;


    //  We don't support any of the known or unknown requests.
    default:

        UDFPrintErr(("UDFUserFsCtrlRequest: STATUS_INVALID_DEVICE_REQUEST for %x\n",
            IrpSp->Parameters.FileSystemControl.FsControlCode));
        RC = STATUS_INVALID_DEVICE_REQUEST;

        Irp->IoStatus.Information = 0;
        Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
        break;
    }

    IoCompleteRequest(Irp,IO_DISK_INCREMENT);
    return RC;

} // end UDFUserFsCtrlRequest()

Referenced by UDFCommonFSControl().