+++ /dev/null
-/*
- * FFS File System Driver for Windows
- *
- * volinfo.c
- *
- * 2004.5.6 ~
- *
- * Lee Jae-Hong, http://www.pyrasis.com
- *
- * See License.txt
- *
- */
-
-#include "ntifs.h"
-#include "ffsdrv.h"
-
-/* Globals */
-
-extern PFFS_GLOBAL FFSGlobal;
-
-
-/* Definitions */
-
-#ifdef ALLOC_PRAGMA
-#pragma alloc_text(PAGE, FFSQueryVolumeInformation)
-#pragma alloc_text(PAGE, FFSSetVolumeInformation)
-#endif
-
-
-__drv_mustHoldCriticalRegion
-NTSTATUS
-FFSQueryVolumeInformation(
- IN PFFS_IRP_CONTEXT IrpContext)
-{
- PDEVICE_OBJECT DeviceObject;
- NTSTATUS Status = STATUS_UNSUCCESSFUL;
- PFFS_VCB Vcb = 0;
- PIRP Irp;
- PIO_STACK_LOCATION IoStackLocation;
- FS_INFORMATION_CLASS FsInformationClass;
- ULONG Length;
- PVOID Buffer;
- BOOLEAN VcbResourceAcquired = FALSE;
-
- PAGED_CODE();
-
- _SEH2_TRY
- {
- ASSERT(IrpContext != NULL);
-
- ASSERT((IrpContext->Identifier.Type == FFSICX) &&
- (IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
-
- DeviceObject = IrpContext->DeviceObject;
-
- //
- // This request is not allowed on the main device object
- //
- if (DeviceObject == FFSGlobal->DeviceObject)
- {
- Status = STATUS_INVALID_DEVICE_REQUEST;
- _SEH2_LEAVE;
- }
-
- Vcb = (PFFS_VCB)DeviceObject->DeviceExtension;
-
- ASSERT(Vcb != NULL);
-
- ASSERT((Vcb->Identifier.Type == FFSVCB) &&
- (Vcb->Identifier.Size == sizeof(FFS_VCB)));
-
- ASSERT(IsMounted(Vcb));
-
- if (!ExAcquireResourceSharedLite(
- &Vcb->MainResource,
- IrpContext->IsSynchronous))
- {
- Status = STATUS_PENDING;
- _SEH2_LEAVE;
- }
-
- VcbResourceAcquired = TRUE;
-
- Irp = IrpContext->Irp;
-
- IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
-
- FsInformationClass =
- IoStackLocation->Parameters.QueryVolume.FsInformationClass;
-
- Length = IoStackLocation->Parameters.QueryVolume.Length;
-
- Buffer = Irp->AssociatedIrp.SystemBuffer;
-
- RtlZeroMemory(Buffer, Length);
-
- switch (FsInformationClass)
- {
- case FileFsVolumeInformation:
- {
- PFILE_FS_VOLUME_INFORMATION FsVolInfo;
- ULONG VolumeLabelLength;
- ULONG RequiredLength;
-
- if (Length < sizeof(FILE_FS_VOLUME_INFORMATION))
- {
- Status = STATUS_INFO_LENGTH_MISMATCH;
- _SEH2_LEAVE;
- }
-
- FsVolInfo = (PFILE_FS_VOLUME_INFORMATION)Buffer;
-
- FsVolInfo->VolumeCreationTime.QuadPart = 0;
-
- FsVolInfo->VolumeSerialNumber = Vcb->Vpb->SerialNumber;
-
- VolumeLabelLength = Vcb->Vpb->VolumeLabelLength;
-
- FsVolInfo->VolumeLabelLength = VolumeLabelLength;
-
- // I don't know what this means
- FsVolInfo->SupportsObjects = FALSE;
-
- RequiredLength = sizeof(FILE_FS_VOLUME_INFORMATION)
- + VolumeLabelLength - sizeof(WCHAR);
-
- if (Length < RequiredLength)
- {
- Irp->IoStatus.Information =
- sizeof(FILE_FS_VOLUME_INFORMATION);
- Status = STATUS_BUFFER_OVERFLOW;
- _SEH2_LEAVE;
- }
-
- RtlCopyMemory(FsVolInfo->VolumeLabel, Vcb->Vpb->VolumeLabel, Vcb->Vpb->VolumeLabelLength);
-
- Irp->IoStatus.Information = RequiredLength;
- Status = STATUS_SUCCESS;
- _SEH2_LEAVE;
- }
-
- case FileFsSizeInformation:
- {
- PFILE_FS_SIZE_INFORMATION FsSizeInfo;
-
- if (Length < sizeof(FILE_FS_SIZE_INFORMATION))
- {
- Status = STATUS_INFO_LENGTH_MISMATCH;
- _SEH2_LEAVE;
- }
-
- FsSizeInfo = (PFILE_FS_SIZE_INFORMATION)Buffer;
-
- {
- if (FS_VERSION == 1)
- {
- FsSizeInfo->TotalAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_old_size / 8);
-
- FsSizeInfo->AvailableAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_old_cstotal.cs_nbfree / 8);
- }
- else
- {
- FsSizeInfo->TotalAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_size / 8);
-
- FsSizeInfo->AvailableAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_cstotal.cs_nbfree / 8);
- }
- }
-
- FsSizeInfo->SectorsPerAllocationUnit =
- Vcb->BlockSize / Vcb->DiskGeometry.BytesPerSector;
-
- FsSizeInfo->BytesPerSector =
- Vcb->DiskGeometry.BytesPerSector;
-
- Irp->IoStatus.Information = sizeof(FILE_FS_SIZE_INFORMATION);
- Status = STATUS_SUCCESS;
- _SEH2_LEAVE;
- }
-
- case FileFsDeviceInformation:
- {
- PFILE_FS_DEVICE_INFORMATION FsDevInfo;
-
- if (Length < sizeof(FILE_FS_DEVICE_INFORMATION))
- {
- Status = STATUS_INFO_LENGTH_MISMATCH;
- _SEH2_LEAVE;
- }
-
- FsDevInfo = (PFILE_FS_DEVICE_INFORMATION)Buffer;
-
- FsDevInfo->DeviceType =
- Vcb->TargetDeviceObject->DeviceType;
-
- FsDevInfo->Characteristics =
- Vcb->TargetDeviceObject->Characteristics;
-
- if (FlagOn(Vcb->Flags, VCB_READ_ONLY))
- {
- SetFlag(FsDevInfo->Characteristics,
- FILE_READ_ONLY_DEVICE);
- }
-
- Irp->IoStatus.Information = sizeof(FILE_FS_DEVICE_INFORMATION);
- Status = STATUS_SUCCESS;
- _SEH2_LEAVE;
- }
-
- case FileFsAttributeInformation:
- {
- PFILE_FS_ATTRIBUTE_INFORMATION FsAttrInfo;
- ULONG RequiredLength;
-
- if (Length < sizeof(FILE_FS_ATTRIBUTE_INFORMATION))
- {
- Status = STATUS_INFO_LENGTH_MISMATCH;
- _SEH2_LEAVE;
- }
-
- FsAttrInfo =
- (PFILE_FS_ATTRIBUTE_INFORMATION)Buffer;
-
- FsAttrInfo->FileSystemAttributes =
- FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
-
- FsAttrInfo->MaximumComponentNameLength = FFS_NAME_LEN;
-
- FsAttrInfo->FileSystemNameLength = 10;
-
- RequiredLength = sizeof(FILE_FS_ATTRIBUTE_INFORMATION) +
- 10 - sizeof(WCHAR);
-
- if (Length < RequiredLength)
- {
- Irp->IoStatus.Information =
- sizeof(FILE_FS_ATTRIBUTE_INFORMATION);
- Status = STATUS_BUFFER_OVERFLOW;
- _SEH2_LEAVE;
- }
-
- RtlCopyMemory(
- FsAttrInfo->FileSystemName,
- L"FFS\0", 8);
-
- Irp->IoStatus.Information = RequiredLength;
- Status = STATUS_SUCCESS;
- _SEH2_LEAVE;
- }
-
-#if (_WIN32_WINNT >= 0x0500)
-
- case FileFsFullSizeInformation:
- {
- PFILE_FS_FULL_SIZE_INFORMATION PFFFSI;
-
- if (Length < sizeof(FILE_FS_FULL_SIZE_INFORMATION))
- {
- Status = STATUS_INFO_LENGTH_MISMATCH;
- _SEH2_LEAVE;
- }
-
- PFFFSI = (PFILE_FS_FULL_SIZE_INFORMATION)Buffer;
-
- /*
- typedef struct _FILE_FS_FULL_SIZE_INFORMATION {
- LARGE_INTEGER TotalAllocationUnits;
- LARGE_INTEGER CallerAvailableAllocationUnits;
- LARGE_INTEGER ActualAvailableAllocationUnits;
- ULONG SectorsPerAllocationUnit;
- ULONG BytesPerSector;
- } FILE_FS_FULL_SIZE_INFORMATION, *PFILE_FS_FULL_SIZE_INFORMATION;
- */
-
- {
- if (FS_VERSION == 1)
- {
- PFFFSI->TotalAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_old_size / 8);
-
- PFFFSI->CallerAvailableAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_old_cstotal.cs_nbfree / 8);
-
- PFFFSI->ActualAvailableAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_old_cstotal.cs_nbfree / 8);
- }
- else
- {
- PFFFSI->TotalAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_size / 8);
-
- PFFFSI->CallerAvailableAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_cstotal.cs_nbfree / 8);
-
- PFFFSI->ActualAvailableAllocationUnits.QuadPart =
- (Vcb->ffs_super_block->fs_cstotal.cs_nbfree / 8);
- }
- }
-
- PFFFSI->SectorsPerAllocationUnit =
- Vcb->BlockSize / Vcb->DiskGeometry.BytesPerSector;
-
- PFFFSI->BytesPerSector = Vcb->DiskGeometry.BytesPerSector;
-
- Irp->IoStatus.Information = sizeof(FILE_FS_FULL_SIZE_INFORMATION);
- Status = STATUS_SUCCESS;
- _SEH2_LEAVE;
- }
-
-#endif // (_WIN32_WINNT >= 0x0500)
-
- default:
- Status = STATUS_INVALID_INFO_CLASS;
- }
- }
-
- _SEH2_FINALLY
- {
- if (VcbResourceAcquired)
- {
- ExReleaseResourceForThreadLite(
- &Vcb->MainResource,
- ExGetCurrentResourceThread());
- }
-
- if (!IrpContext->ExceptionInProgress)
- {
- if (Status == STATUS_PENDING)
- {
- FFSQueueRequest(IrpContext);
- }
- else
- {
- FFSCompleteIrpContext(IrpContext, Status);
- }
- }
- } _SEH2_END;
-
- return Status;
-}
-
-#if !FFS_READ_ONLY
-
-__drv_mustHoldCriticalRegion
-NTSTATUS
-FFSSetVolumeInformation(
- IN PFFS_IRP_CONTEXT IrpContext)
-{
- PDEVICE_OBJECT DeviceObject;
- NTSTATUS Status = STATUS_UNSUCCESSFUL;
- PFFS_VCB Vcb;
- PIRP Irp;
- PIO_STACK_LOCATION IoStackLocation;
- FS_INFORMATION_CLASS FsInformationClass;
-
- PAGED_CODE();
-
- _SEH2_TRY
- {
- ASSERT(IrpContext != NULL);
-
- ASSERT((IrpContext->Identifier.Type == FFSICX) &&
- (IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
-
- DeviceObject = IrpContext->DeviceObject;
-
- //
- // This request is not allowed on the main device object
- //
- if (DeviceObject == FFSGlobal->DeviceObject)
- {
- Status = STATUS_INVALID_DEVICE_REQUEST;
- _SEH2_LEAVE;
- }
-
- Vcb = (PFFS_VCB)DeviceObject->DeviceExtension;
-
- ASSERT(Vcb != NULL);
-
- ASSERT((Vcb->Identifier.Type == FFSVCB) &&
- (Vcb->Identifier.Size == sizeof(FFS_VCB)));
-
- ASSERT(IsMounted(Vcb));
-
- if (IsFlagOn(Vcb->Flags, VCB_READ_ONLY))
- {
- Status = STATUS_MEDIA_WRITE_PROTECTED;
- _SEH2_LEAVE;
- }
-
- Irp = IrpContext->Irp;
-
- IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
-
- //Notes: SetVolume is not defined in ntddk.h of win2k ddk,
- // But it's same to QueryVolume ....
- FsInformationClass =
- IoStackLocation->Parameters./*SetVolume*/QueryVolume.FsInformationClass;
-
- switch (FsInformationClass)
- {
- case FileFsLabelInformation:
- {
- PFILE_FS_LABEL_INFORMATION VolLabelInfo = NULL;
- ULONG VolLabelLen;
- UNICODE_STRING LabelName ;
-
- OEM_STRING OemName;
-
- VolLabelInfo = (PFILE_FS_LABEL_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
-
- VolLabelLen = VolLabelInfo->VolumeLabelLength;
-
- if(VolLabelLen > (16 * sizeof(WCHAR)))
- {
- Status = STATUS_INVALID_VOLUME_LABEL;
- _SEH2_LEAVE;
- }
-
- RtlCopyMemory(Vcb->Vpb->VolumeLabel,
- VolLabelInfo->VolumeLabel,
- VolLabelLen);
-
- RtlZeroMemory(Vcb->ffs_super_block->fs_volname, 16);
-
- LabelName.Buffer = VolLabelInfo->VolumeLabel;
- LabelName.MaximumLength = (USHORT)16 * sizeof(WCHAR);
- LabelName.Length = (USHORT)VolLabelLen;
-
- OemName.Buffer = SUPER_BLOCK->fs_volname;
- OemName.Length = 0;
- OemName.MaximumLength = 16;
-
- FFSUnicodeToOEM(&OemName,
- &LabelName);
-
- Vcb->Vpb->VolumeLabelLength =
- (USHORT)VolLabelLen;
-
- if (FFSSaveSuper(IrpContext, Vcb))
- {
- Status = STATUS_SUCCESS;
- }
-
- Irp->IoStatus.Information = 0;
-
- }
- break;
-
- default:
- Status = STATUS_INVALID_INFO_CLASS;
- }
- }
-
- _SEH2_FINALLY
- {
-
- if (!IrpContext->ExceptionInProgress)
- {
- if (Status == STATUS_PENDING)
- {
- FFSQueueRequest(IrpContext);
- }
- else
- {
- FFSCompleteIrpContext(IrpContext, Status);
- }
- }
- } _SEH2_END;
-
- return Status;
-
-}
-
-#endif // !FFS_READ_ONLY
projects / reactos.git / blobdiff