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820 lines
24 KiB
C++
820 lines
24 KiB
C++
////////////////////////////////////////////////////////////////////
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// Copyright (C) Alexander Telyatnikov, Ivan Keliukh, Yegor Anchishkin, SKIF Software, 1999-2013. Kiev, Ukraine
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// All rights reserved
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// This file was released under the GPLv2 on June 2015.
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////////////////////////////////////////////////////////////////////
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/*++
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Module Name:
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VolInfo.cpp
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Abstract:
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This module implements the volume information routines for UDF called by
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the dispatch driver.
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--*/
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#include "udffs.h"
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// define the file specific bug-check id
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#define UDF_BUG_CHECK_ID UDF_FILE_VOL_INFORMATION
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// Local support routines
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NTSTATUS
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UDFQueryFsVolumeInfo (
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_VOLUME_INFORMATION Buffer,
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IN OUT PULONG Length
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);
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NTSTATUS
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UDFQueryFsSizeInfo (
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_SIZE_INFORMATION Buffer,
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IN OUT PULONG Length
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);
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NTSTATUS
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UDFQueryFsFullSizeInfo (
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_FULL_SIZE_INFORMATION Buffer,
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IN OUT PULONG Length
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);
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NTSTATUS
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UDFQueryFsDeviceInfo (
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_DEVICE_INFORMATION Buffer,
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IN OUT PULONG Length
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);
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NTSTATUS
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UDFQueryFsAttributeInfo (
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_ATTRIBUTE_INFORMATION Buffer,
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IN OUT PULONG Length
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);
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NTSTATUS
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UDFSetLabelInfo (
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_LABEL_INFORMATION Buffer,
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IN OUT PULONG Length);
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/*
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This is the routine for querying volume information
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Arguments:
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Irp - Supplies the Irp being processed
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Return Value:
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NTSTATUS - The return status for the operation
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*/
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NTSTATUS
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NTAPI
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UDFQueryVolInfo(
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PDEVICE_OBJECT DeviceObject, // the logical volume device object
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PIRP Irp // I/O Request Packet
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)
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{
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NTSTATUS RC = STATUS_SUCCESS;
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PtrUDFIrpContext PtrIrpContext = NULL;
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BOOLEAN AreWeTopLevel = FALSE;
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UDFPrint(("UDFQueryVolInfo: \n"));
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FsRtlEnterFileSystem();
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ASSERT(DeviceObject);
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ASSERT(Irp);
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// set the top level context
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AreWeTopLevel = UDFIsIrpTopLevel(Irp);
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ASSERT(!UDFIsFSDevObj(DeviceObject));
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_SEH2_TRY {
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// get an IRP context structure and issue the request
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PtrIrpContext = UDFAllocateIrpContext(Irp, DeviceObject);
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if(PtrIrpContext) {
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RC = UDFCommonQueryVolInfo(PtrIrpContext, Irp);
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} else {
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RC = STATUS_INSUFFICIENT_RESOURCES;
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Irp->IoStatus.Status = RC;
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Irp->IoStatus.Information = 0;
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// complete the IRP
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IoCompleteRequest(Irp, IO_DISK_INCREMENT);
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}
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} _SEH2_EXCEPT(UDFExceptionFilter(PtrIrpContext, _SEH2_GetExceptionInformation())) {
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RC = UDFExceptionHandler(PtrIrpContext, Irp);
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UDFLogEvent(UDF_ERROR_INTERNAL_ERROR, RC);
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} _SEH2_END;
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if (AreWeTopLevel) {
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IoSetTopLevelIrp(NULL);
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}
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FsRtlExitFileSystem();
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return(RC);
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} // end UDFQueryVolInfo()
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/*
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This is the common routine for querying volume information called by both
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the fsd and fsp threads.
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Arguments:
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Irp - Supplies the Irp being processed
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Return Value:
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NTSTATUS - The return status for the operation
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*/
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NTSTATUS
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UDFCommonQueryVolInfo(
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PtrUDFIrpContext PtrIrpContext,
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PIRP Irp
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)
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{
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NTSTATUS RC = STATUS_INVALID_PARAMETER;
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PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation( Irp );
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ULONG Length;
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BOOLEAN CanWait = FALSE;
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PVCB Vcb;
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BOOLEAN PostRequest = FALSE;
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BOOLEAN AcquiredVCB = FALSE;
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PFILE_OBJECT FileObject = NULL;
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// PtrUDFFCB Fcb = NULL;
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PtrUDFCCB Ccb = NULL;
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_SEH2_TRY {
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UDFPrint(("UDFCommonQueryVolInfo: \n"));
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ASSERT(PtrIrpContext);
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ASSERT(Irp);
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PAGED_CODE();
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FileObject = IrpSp->FileObject;
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ASSERT(FileObject);
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// Get the FCB and CCB pointers.
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Ccb = (PtrUDFCCB)(FileObject->FsContext2);
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ASSERT(Ccb);
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Vcb = (PVCB)(IrpSp->DeviceObject->DeviceExtension);
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ASSERT(Vcb);
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//Vcb->VCBFlags |= UDF_VCB_SKIP_EJECT_CHECK;
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// Reference our input parameters to make things easier
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Length = IrpSp->Parameters.QueryVolume.Length;
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// Acquire the Vcb for this volume.
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CanWait = ((PtrIrpContext->IrpContextFlags & UDF_IRP_CONTEXT_CAN_BLOCK) ? TRUE : FALSE);
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#ifdef UDF_ENABLE_SECURITY
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RC = IoCheckFunctionAccess(
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Ccb->PreviouslyGrantedAccess,
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PtrIrpContext->MajorFunction,
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PtrIrpContext->MinorFunction,
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0,
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NULL,
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&(IrpSp->Parameters.QueryVolume.FsInformationClass));
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if(!NT_SUCCESS(RC)) {
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try_return(RC);
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}
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#endif //UDF_ENABLE_SECURITY
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switch (IrpSp->Parameters.QueryVolume.FsInformationClass) {
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case FileFsVolumeInformation:
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// This is the only routine we need the Vcb shared because of
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// copying the volume label. All other routines copy fields that
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// cannot change or are just manifest constants.
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UDFFlushTryBreak(Vcb);
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if (!UDFAcquireResourceShared(&(Vcb->VCBResource), CanWait)) {
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PostRequest = TRUE;
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try_return (RC = STATUS_PENDING);
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}
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AcquiredVCB = TRUE;
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RC = UDFQueryFsVolumeInfo( PtrIrpContext, Vcb, (PFILE_FS_VOLUME_INFORMATION)(Irp->AssociatedIrp.SystemBuffer), &Length );
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break;
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case FileFsSizeInformation:
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RC = UDFQueryFsSizeInfo( PtrIrpContext, Vcb, (PFILE_FS_SIZE_INFORMATION)(Irp->AssociatedIrp.SystemBuffer), &Length );
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break;
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case FileFsDeviceInformation:
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RC = UDFQueryFsDeviceInfo( PtrIrpContext, Vcb, (PFILE_FS_DEVICE_INFORMATION)(Irp->AssociatedIrp.SystemBuffer), &Length );
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break;
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case FileFsAttributeInformation:
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RC = UDFQueryFsAttributeInfo( PtrIrpContext, Vcb, (PFILE_FS_ATTRIBUTE_INFORMATION)(Irp->AssociatedIrp.SystemBuffer), &Length );
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break;
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case FileFsFullSizeInformation:
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RC = UDFQueryFsFullSizeInfo( PtrIrpContext, Vcb, (PFILE_FS_FULL_SIZE_INFORMATION)(Irp->AssociatedIrp.SystemBuffer), &Length );
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break;
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default:
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RC = STATUS_INVALID_DEVICE_REQUEST;
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Irp->IoStatus.Information = 0;
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break;
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}
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// Set the information field to the number of bytes actually filled in
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Irp->IoStatus.Information = IrpSp->Parameters.QueryVolume.Length - Length;
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try_exit: NOTHING;
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} _SEH2_FINALLY {
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if (AcquiredVCB) {
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UDFReleaseResource(&(Vcb->VCBResource));
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AcquiredVCB = FALSE;
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}
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// Post IRP if required
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if (PostRequest) {
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// Since, the I/O Manager gave us a system buffer, we do not
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// need to "lock" anything.
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// Perform the post operation which will mark the IRP pending
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// and will return STATUS_PENDING back to us
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RC = UDFPostRequest(PtrIrpContext, Irp);
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} else
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if(!_SEH2_AbnormalTermination()) {
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Irp->IoStatus.Status = RC;
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// Free up the Irp Context
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UDFReleaseIrpContext(PtrIrpContext);
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// complete the IRP
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IoCompleteRequest(Irp, IO_DISK_INCREMENT);
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} // can we complete the IRP ?
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} _SEH2_END;
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return RC;
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} // end UDFCommonQueryVolInfo()
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// Local support routine
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/*
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This routine implements the query volume info call
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Arguments:
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Vcb - Vcb for this volume.
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Buffer - Supplies a pointer to the output buffer where the information
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is to be returned
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Length - Supplies the length of the buffer in byte. This variable
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upon return recieves the remaining bytes free in the buffer
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*/
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NTSTATUS
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UDFQueryFsVolumeInfo(
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_VOLUME_INFORMATION Buffer,
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IN OUT PULONG Length
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)
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{
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ULONG BytesToCopy;
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NTSTATUS Status;
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PAGED_CODE();
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UDFPrint((" UDFQueryFsVolumeInfo: \n"));
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// Fill in the data from the Vcb.
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Buffer->VolumeCreationTime.QuadPart = Vcb->VolCreationTime;
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Buffer->VolumeSerialNumber = Vcb->PhSerialNumber;
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UDFPrint((" SN %x\n", Vcb->PhSerialNumber));
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Buffer->SupportsObjects = FALSE;
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*Length -= FIELD_OFFSET( FILE_FS_VOLUME_INFORMATION, VolumeLabel[0] );
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// Check if the buffer we're given is long enough
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if (*Length >= (ULONG) Vcb->VolIdent.Length) {
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BytesToCopy = Vcb->VolIdent.Length;
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Status = STATUS_SUCCESS;
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} else {
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BytesToCopy = *Length;
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Status = STATUS_BUFFER_OVERFLOW;
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}
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// Copy over what we can of the volume label, and adjust *Length
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Buffer->VolumeLabelLength = BytesToCopy;
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if (BytesToCopy)
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RtlCopyMemory( &(Buffer->VolumeLabel[0]), Vcb->VolIdent.Buffer, BytesToCopy );
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*Length -= BytesToCopy;
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return Status;
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} // end UDFQueryFsVolumeInfo()
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/*
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This routine implements the query volume size call.
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Arguments:
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Vcb - Vcb for this volume.
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Buffer - Supplies a pointer to the output buffer where the information
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is to be returned
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Length - Supplies the length of the buffer in byte. This variable
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upon return recieves the remaining bytes free in the buffer
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*/
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NTSTATUS
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UDFQueryFsSizeInfo(
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_SIZE_INFORMATION Buffer,
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IN OUT PULONG Length
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)
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{
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PAGED_CODE();
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UDFPrint((" UDFQueryFsSizeInfo: \n"));
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// Fill in the output buffer.
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if(Vcb->BitmapModified) {
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Vcb->TotalAllocUnits =
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Buffer->TotalAllocationUnits.QuadPart = UDFGetTotalSpace(Vcb);
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Vcb->FreeAllocUnits =
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Buffer->AvailableAllocationUnits.QuadPart = UDFGetFreeSpace(Vcb);
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Vcb->BitmapModified = FALSE;
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} else {
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Buffer->TotalAllocationUnits.QuadPart = Vcb->TotalAllocUnits;
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Buffer->AvailableAllocationUnits.QuadPart = Vcb->FreeAllocUnits;
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}
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Vcb->LowFreeSpace = (Vcb->FreeAllocUnits < max(Vcb->FECharge,UDF_DEFAULT_FE_CHARGE)*128);
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if(!Buffer->TotalAllocationUnits.QuadPart)
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Buffer->TotalAllocationUnits.QuadPart = max(1, Vcb->LastPossibleLBA);
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Buffer->SectorsPerAllocationUnit = Vcb->LBlockSize / Vcb->BlockSize;
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if(!Buffer->SectorsPerAllocationUnit)
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Buffer->SectorsPerAllocationUnit = 1;
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Buffer->BytesPerSector = Vcb->BlockSize;
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if(!Buffer->BytesPerSector)
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Buffer->BytesPerSector = 2048;
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UDFPrint((" Space: Total %I64x, Free %I64x\n",
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Buffer->TotalAllocationUnits.QuadPart,
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Buffer->AvailableAllocationUnits.QuadPart));
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// Adjust the length variable
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*Length -= sizeof( FILE_FS_SIZE_INFORMATION );
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return STATUS_SUCCESS;
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} // UDFQueryFsSizeInfo()
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/*
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This routine implements the query volume full size call.
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Arguments:
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Vcb - Vcb for this volume.
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Buffer - Supplies a pointer to the output buffer where the information
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is to be returned
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Length - Supplies the length of the buffer in byte. This variable
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upon return recieves the remaining bytes free in the buffer
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*/
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NTSTATUS
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UDFQueryFsFullSizeInfo(
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_FULL_SIZE_INFORMATION Buffer,
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IN OUT PULONG Length
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)
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{
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PAGED_CODE();
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UDFPrint((" UDFQueryFsFullSizeInfo: \n"));
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// Fill in the output buffer.
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if(Vcb->BitmapModified) {
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Vcb->TotalAllocUnits =
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Buffer->TotalAllocationUnits.QuadPart = UDFGetTotalSpace(Vcb);
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Vcb->FreeAllocUnits =
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Buffer->CallerAvailableAllocationUnits.QuadPart =
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Buffer->ActualAvailableAllocationUnits.QuadPart = UDFGetFreeSpace(Vcb);
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Vcb->BitmapModified = FALSE;
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} else {
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Buffer->TotalAllocationUnits.QuadPart = Vcb->TotalAllocUnits;
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Buffer->CallerAvailableAllocationUnits.QuadPart =
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Buffer->ActualAvailableAllocationUnits.QuadPart = Vcb->FreeAllocUnits;
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}
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if(!Buffer->TotalAllocationUnits.QuadPart)
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Buffer->TotalAllocationUnits.QuadPart = max(1, Vcb->LastPossibleLBA);
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Buffer->SectorsPerAllocationUnit = Vcb->LBlockSize / Vcb->BlockSize;
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if(!Buffer->SectorsPerAllocationUnit)
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Buffer->SectorsPerAllocationUnit = 1;
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Buffer->BytesPerSector = Vcb->BlockSize;
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if(!Buffer->BytesPerSector)
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Buffer->BytesPerSector = 2048;
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UDFPrint((" Space: Total %I64x, Free %I64x\n",
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Buffer->TotalAllocationUnits.QuadPart,
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Buffer->ActualAvailableAllocationUnits.QuadPart));
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// Adjust the length variable
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*Length -= sizeof( FILE_FS_FULL_SIZE_INFORMATION );
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return STATUS_SUCCESS;
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} // UDFQueryFsSizeInfo()
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/*
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This routine implements the query volume device call.
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Arguments:
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Vcb - Vcb for this volume.
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Buffer - Supplies a pointer to the output buffer where the information
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is to be returned
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Length - Supplies the length of the buffer in byte. This variable
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upon return recieves the remaining bytes free in the buffer
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*/
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NTSTATUS
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UDFQueryFsDeviceInfo(
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_DEVICE_INFORMATION Buffer,
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IN OUT PULONG Length
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)
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{
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PAGED_CODE();
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UDFPrint((" UDFQueryFsDeviceInfo: \n"));
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// Update the output buffer.
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if (Vcb->TargetDeviceObject->DeviceType != FILE_DEVICE_CD_ROM && Vcb->TargetDeviceObject->DeviceType != FILE_DEVICE_DVD)
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{
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ASSERT(! (Vcb->TargetDeviceObject->Characteristics & (FILE_READ_ONLY_DEVICE | FILE_WRITE_ONCE_MEDIA)));
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Buffer->Characteristics = Vcb->TargetDeviceObject->Characteristics & ~(FILE_READ_ONLY_DEVICE | FILE_WRITE_ONCE_MEDIA);
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}
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else
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{
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Buffer->Characteristics = Vcb->TargetDeviceObject->Characteristics;
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}
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Buffer->DeviceType = Vcb->TargetDeviceObject->DeviceType;
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UDFPrint((" Characteristics %x, DeviceType %x\n", Buffer->Characteristics, Buffer->DeviceType));
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// Adjust the length variable
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*Length -= sizeof( FILE_FS_DEVICE_INFORMATION );
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return STATUS_SUCCESS;
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} // end UDFQueryFsDeviceInfo()
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/*
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This routine implements the query volume attribute call.
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Arguments:
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Vcb - Vcb for this volume.
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Buffer - Supplies a pointer to the output buffer where the information
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is to be returned
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Length - Supplies the length of the buffer in byte. This variable
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upon return recieves the remaining bytes free in the buffer
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*/
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NTSTATUS
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UDFQueryFsAttributeInfo(
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IN PtrUDFIrpContext PtrIrpContext,
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IN PVCB Vcb,
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IN PFILE_FS_ATTRIBUTE_INFORMATION Buffer,
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IN OUT PULONG Length
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)
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{
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ULONG BytesToCopy;
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NTSTATUS Status = STATUS_SUCCESS;
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PCWSTR FsTypeTitle;
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ULONG FsTypeTitleLen;
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PAGED_CODE();
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UDFPrint((" UDFQueryFsAttributeInfo: \n"));
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// Fill out the fixed portion of the buffer.
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Buffer->FileSystemAttributes = FILE_CASE_SENSITIVE_SEARCH |
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FILE_CASE_PRESERVED_NAMES |
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(UDFStreamsSupported(Vcb) ? FILE_NAMED_STREAMS : 0) |
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#ifdef ALLOW_SPARSE
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FILE_SUPPORTS_SPARSE_FILES |
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#endif //ALLOW_SPARSE
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#ifdef UDF_ENABLE_SECURITY
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(UDFNtAclSupported(Vcb) ? FILE_PERSISTENT_ACLS : 0) |
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#endif //UDF_ENABLE_SECURITY
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((Vcb->VCBFlags & UDF_VCB_FLAGS_VOLUME_READ_ONLY) ? FILE_READ_ONLY_VOLUME : 0) |
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FILE_UNICODE_ON_DISK;
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Buffer->MaximumComponentNameLength = UDF_X_NAME_LEN-1;
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*Length -= FIELD_OFFSET( FILE_FS_ATTRIBUTE_INFORMATION, FileSystemName );
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// Make sure we can copy full unicode characters.
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*Length &= ~1;
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// Determine how much of the file system name will fit.
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#define UDFSetFsTitle(tit) \
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|
FsTypeTitle = UDF_FS_TITLE_##tit; \
|
|
FsTypeTitleLen = sizeof(UDF_FS_TITLE_##tit) - sizeof(WCHAR);
|
|
|
|
switch(Vcb->TargetDeviceObject->DeviceType) {
|
|
case FILE_DEVICE_CD_ROM: {
|
|
if(Vcb->VCBFlags & UDF_VCB_FLAGS_RAW_DISK) {
|
|
if(!Vcb->LastLBA) {
|
|
UDFSetFsTitle(BLANK);
|
|
} else {
|
|
UDFSetFsTitle(UNKNOWN);
|
|
}
|
|
} else
|
|
if(Vcb->CDR_Mode) {
|
|
if(Vcb->MediaClassEx == CdMediaClass_DVDR ||
|
|
Vcb->MediaClassEx == CdMediaClass_DVDRW ||
|
|
Vcb->MediaClassEx == CdMediaClass_DVDRAM) {
|
|
UDFSetFsTitle(DVDR);
|
|
} else
|
|
if(Vcb->MediaClassEx == CdMediaClass_DVDpR ||
|
|
Vcb->MediaClassEx == CdMediaClass_DVDpRW) {
|
|
UDFSetFsTitle(DVDpR);
|
|
} else
|
|
if(Vcb->MediaClassEx == CdMediaClass_DVDROM) {
|
|
UDFSetFsTitle(DVDROM);
|
|
} else
|
|
if(Vcb->MediaClassEx == CdMediaClass_CDROM) {
|
|
UDFSetFsTitle(CDROM);
|
|
} else {
|
|
UDFSetFsTitle(CDR);
|
|
}
|
|
} else {
|
|
if(Vcb->MediaClassEx == CdMediaClass_DVDROM ||
|
|
Vcb->MediaClassEx == CdMediaClass_DVDR ||
|
|
Vcb->MediaClassEx == CdMediaClass_DVDpR) {
|
|
UDFSetFsTitle(DVDROM);
|
|
} else
|
|
if(Vcb->MediaClassEx == CdMediaClass_DVDR) {
|
|
UDFSetFsTitle(DVDR);
|
|
} else
|
|
if(Vcb->MediaClassEx == CdMediaClass_DVDRW) {
|
|
UDFSetFsTitle(DVDRW);
|
|
} else
|
|
if(Vcb->MediaClassEx == CdMediaClass_DVDpRW) {
|
|
UDFSetFsTitle(DVDpRW);
|
|
} else
|
|
if(Vcb->MediaClassEx == CdMediaClass_DVDRAM) {
|
|
UDFSetFsTitle(DVDRAM);
|
|
} else
|
|
if(Vcb->MediaClassEx == CdMediaClass_CDROM) {
|
|
UDFSetFsTitle(CDROM);
|
|
} else {
|
|
UDFSetFsTitle(CDRW);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
UDFSetFsTitle(HDD);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#undef UDFSetFsTitle
|
|
|
|
if (*Length >= FsTypeTitleLen) {
|
|
BytesToCopy = FsTypeTitleLen;
|
|
} else {
|
|
BytesToCopy = *Length;
|
|
Status = STATUS_BUFFER_OVERFLOW;
|
|
}
|
|
|
|
*Length -= BytesToCopy;
|
|
// Do the file system name.
|
|
Buffer->FileSystemNameLength = BytesToCopy;
|
|
RtlCopyMemory( &Buffer->FileSystemName[0], FsTypeTitle, BytesToCopy );
|
|
// And return to our caller
|
|
return Status;
|
|
} // end UDFQueryFsAttributeInfo()
|
|
|
|
|
|
#ifndef UDF_READ_ONLY_BUILD
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
UDFSetVolInfo(
|
|
PDEVICE_OBJECT DeviceObject, // the logical volume device object
|
|
PIRP Irp // I/O Request Packet
|
|
)
|
|
{
|
|
NTSTATUS RC = STATUS_SUCCESS;
|
|
PtrUDFIrpContext PtrIrpContext = NULL;
|
|
BOOLEAN AreWeTopLevel = FALSE;
|
|
|
|
UDFPrint(("UDFSetVolInfo: \n"));
|
|
|
|
FsRtlEnterFileSystem();
|
|
ASSERT(DeviceObject);
|
|
ASSERT(Irp);
|
|
|
|
// set the top level context
|
|
AreWeTopLevel = UDFIsIrpTopLevel(Irp);
|
|
ASSERT(!UDFIsFSDevObj(DeviceObject));
|
|
|
|
_SEH2_TRY {
|
|
|
|
// get an IRP context structure and issue the request
|
|
PtrIrpContext = UDFAllocateIrpContext(Irp, DeviceObject);
|
|
ASSERT(PtrIrpContext);
|
|
|
|
RC = UDFCommonSetVolInfo(PtrIrpContext, Irp);
|
|
|
|
} _SEH2_EXCEPT(UDFExceptionFilter(PtrIrpContext, _SEH2_GetExceptionInformation())) {
|
|
|
|
RC = UDFExceptionHandler(PtrIrpContext, Irp);
|
|
|
|
UDFLogEvent(UDF_ERROR_INTERNAL_ERROR, RC);
|
|
} _SEH2_END;
|
|
|
|
if (AreWeTopLevel) {
|
|
IoSetTopLevelIrp(NULL);
|
|
}
|
|
|
|
FsRtlExitFileSystem();
|
|
|
|
return(RC);
|
|
} // end UDFSetVolInfo()
|
|
|
|
|
|
/*
|
|
This is the common routine for setting volume information called by both
|
|
the fsd and fsp threads.
|
|
*/
|
|
NTSTATUS
|
|
UDFCommonSetVolInfo(
|
|
PtrUDFIrpContext PtrIrpContext,
|
|
PIRP Irp
|
|
)
|
|
{
|
|
NTSTATUS RC = STATUS_INVALID_PARAMETER;
|
|
PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation( Irp );
|
|
ULONG Length;
|
|
BOOLEAN CanWait = FALSE;
|
|
PVCB Vcb;
|
|
BOOLEAN PostRequest = FALSE;
|
|
BOOLEAN AcquiredVCB = FALSE;
|
|
PFILE_OBJECT FileObject = NULL;
|
|
// PtrUDFFCB Fcb = NULL;
|
|
PtrUDFCCB Ccb = NULL;
|
|
|
|
_SEH2_TRY {
|
|
|
|
UDFPrint(("UDFCommonSetVolInfo: \n"));
|
|
ASSERT(PtrIrpContext);
|
|
ASSERT(Irp);
|
|
|
|
PAGED_CODE();
|
|
|
|
FileObject = IrpSp->FileObject;
|
|
ASSERT(FileObject);
|
|
|
|
// Get the FCB and CCB pointers.
|
|
Ccb = (PtrUDFCCB)(FileObject->FsContext2);
|
|
ASSERT(Ccb);
|
|
|
|
if(Ccb && Ccb->Fcb && (Ccb->Fcb->NodeIdentifier.NodeType != UDF_NODE_TYPE_VCB)) {
|
|
UDFPrint((" Can't change Label on Non-volume object\n"));
|
|
try_return(RC = STATUS_ACCESS_DENIED);
|
|
}
|
|
|
|
Vcb = (PVCB)(IrpSp->DeviceObject->DeviceExtension);
|
|
ASSERT(Vcb);
|
|
Vcb->VCBFlags |= UDF_VCB_SKIP_EJECT_CHECK;
|
|
// Reference our input parameters to make things easier
|
|
|
|
if(Vcb->VCBFlags & UDF_VCB_FLAGS_RAW_DISK) {
|
|
UDFPrint((" Can't change Label on blank volume ;)\n"));
|
|
try_return(RC = STATUS_ACCESS_DENIED);
|
|
}
|
|
|
|
Length = IrpSp->Parameters.SetVolume.Length;
|
|
// Acquire the Vcb for this volume.
|
|
CanWait = ((PtrIrpContext->IrpContextFlags & UDF_IRP_CONTEXT_CAN_BLOCK) ? TRUE : FALSE);
|
|
if (!UDFAcquireResourceShared(&(Vcb->VCBResource), CanWait)) {
|
|
PostRequest = TRUE;
|
|
try_return (RC = STATUS_PENDING);
|
|
}
|
|
AcquiredVCB = TRUE;
|
|
#ifdef UDF_ENABLE_SECURITY
|
|
RC = IoCheckFunctionAccess(
|
|
Ccb->PreviouslyGrantedAccess,
|
|
PtrIrpContext->MajorFunction,
|
|
PtrIrpContext->MinorFunction,
|
|
0,
|
|
NULL,
|
|
&(IrpSp->Parameters.SetVolume.FsInformationClass));
|
|
if(!NT_SUCCESS(RC)) {
|
|
try_return(RC);
|
|
}
|
|
#endif //UDF_ENABLE_SECURITY
|
|
switch (IrpSp->Parameters.SetVolume.FsInformationClass) {
|
|
|
|
case FileFsLabelInformation:
|
|
|
|
RC = UDFSetLabelInfo( PtrIrpContext, Vcb, (PFILE_FS_LABEL_INFORMATION)(Irp->AssociatedIrp.SystemBuffer), &Length );
|
|
Irp->IoStatus.Information = 0;
|
|
break;
|
|
|
|
default:
|
|
|
|
RC = STATUS_INVALID_DEVICE_REQUEST;
|
|
Irp->IoStatus.Information = 0;
|
|
break;
|
|
|
|
}
|
|
|
|
// Set the information field to the number of bytes actually filled in
|
|
Irp->IoStatus.Information = IrpSp->Parameters.SetVolume.Length - Length;
|
|
|
|
try_exit: NOTHING;
|
|
|
|
} _SEH2_FINALLY {
|
|
|
|
if (AcquiredVCB) {
|
|
UDFReleaseResource(&(Vcb->VCBResource));
|
|
AcquiredVCB = FALSE;
|
|
}
|
|
|
|
// Post IRP if required
|
|
if (PostRequest) {
|
|
|
|
// Since, the I/O Manager gave us a system buffer, we do not
|
|
// need to "lock" anything.
|
|
|
|
// Perform the post operation which will mark the IRP pending
|
|
// and will return STATUS_PENDING back to us
|
|
RC = UDFPostRequest(PtrIrpContext, Irp);
|
|
|
|
} else {
|
|
|
|
// Can complete the IRP here if no exception was encountered
|
|
if (!_SEH2_AbnormalTermination()) {
|
|
Irp->IoStatus.Status = RC;
|
|
|
|
// Free up the Irp Context
|
|
UDFReleaseIrpContext(PtrIrpContext);
|
|
// complete the IRP
|
|
IoCompleteRequest(Irp, IO_DISK_INCREMENT);
|
|
}
|
|
} // can we complete the IRP ?
|
|
|
|
} _SEH2_END;
|
|
|
|
return RC;
|
|
} // end UDFCommonSetVolInfo()
|
|
|
|
/*
|
|
This sets Volume Label
|
|
*/
|
|
NTSTATUS
|
|
UDFSetLabelInfo (
|
|
IN PtrUDFIrpContext PtrIrpContext,
|
|
IN PVCB Vcb,
|
|
IN PFILE_FS_LABEL_INFORMATION Buffer,
|
|
IN OUT PULONG Length
|
|
)
|
|
{
|
|
PAGED_CODE();
|
|
|
|
UDFPrint((" UDFSetLabelInfo: \n"));
|
|
if(Buffer->VolumeLabelLength > UDF_VOL_LABEL_LEN*sizeof(WCHAR)) {
|
|
// Too long Volume Label... NT doesn't like it
|
|
UDFPrint((" UDFSetLabelInfo: STATUS_INVALID_VOLUME_LABEL\n"));
|
|
return STATUS_INVALID_VOLUME_LABEL;
|
|
}
|
|
|
|
if(Vcb->VolIdent.Buffer) MyFreePool__(Vcb->VolIdent.Buffer);
|
|
Vcb->VolIdent.Buffer = (PWCHAR)MyAllocatePool__(NonPagedPool, Buffer->VolumeLabelLength+sizeof(WCHAR));
|
|
if(!Vcb->VolIdent.Buffer) return STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
Vcb->VolIdent.Length = (USHORT)Buffer->VolumeLabelLength;
|
|
Vcb->VolIdent.MaximumLength = (USHORT)Buffer->VolumeLabelLength+sizeof(WCHAR);
|
|
RtlCopyMemory(Vcb->VolIdent.Buffer, &(Buffer->VolumeLabel), Buffer->VolumeLabelLength);
|
|
Vcb->VolIdent.Buffer[Buffer->VolumeLabelLength/sizeof(WCHAR)] = 0;
|
|
UDFSetModified(Vcb);
|
|
|
|
UDFPrint((" UDFSetLabelInfo: OK\n"));
|
|
return STATUS_SUCCESS;
|
|
} // end UDFSetLabelInfo ()
|
|
|
|
#endif //UDF_READ_ONLY_BUILD
|