--- /dev/null
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS File System Recognizer
+ * FILE: drivers/filesystems/fs_rec/fs_rec.h
+ * PURPOSE: Main Header File
+ * PROGRAMMER: Alex Ionescu (alex.ionescu@reactos.org)
+ * Eric Kohl
+ */
+
+#ifndef _FS_REC_H
+#define _FS_REC_H
+
+#include <ntifs.h>
+
+/* Tag for memory allocations */
+#define FSREC_TAG 'cRsF'
+
+/* UDFS Offsets */
+#define UDFS_VRS_START_OFFSET 32768
+#define UDFS_AVDP_SECTOR 256
+
+/* Non-standard rounding macros */
+#ifndef ROUND_UP
+#define ROUND_UP(n, align) \
+ ROUND_DOWN(((ULONG)n) + (align) - 1, (align))
+
+#define ROUND_DOWN(n, align) \
+ (((ULONG)n) & ~((align) - 1l))
+#endif
+
+/* Conversion types and macros taken from internal ntifs headers */
+typedef union _UCHAR1
+{
+ UCHAR Uchar[1];
+ UCHAR ForceAlignment;
+} UCHAR1, *PUCHAR1;
+
+typedef union _UCHAR2
+{
+ UCHAR Uchar[2];
+ USHORT ForceAlignment;
+} UCHAR2, *PUCHAR2;
+
+typedef union _UCHAR4
+{
+ UCHAR Uchar[4];
+ ULONG ForceAlignment;
+} UCHAR4, *PUCHAR4;
+
+#define CopyUchar1(Dst,Src) { \
+ *((UCHAR1 *)(Dst)) = *((UNALIGNED UCHAR1 *)(Src)); \
+}
+
+#define CopyUchar2(Dst,Src) { \
+ *((UCHAR2 *)(Dst)) = *((UNALIGNED UCHAR2 *)(Src)); \
+}
+
+#define CopyUchar4(Dst,Src) { \
+ *((UCHAR4 *)(Dst)) = *((UNALIGNED UCHAR4 *)(Src)); \
+}
+
+#define FatUnpackBios(Bios,Pbios) { \
+ CopyUchar2(&(Bios)->BytesPerSector, &(Pbios)->BytesPerSector[0] ); \
+ CopyUchar1(&(Bios)->SectorsPerCluster, &(Pbios)->SectorsPerCluster[0]); \
+ CopyUchar2(&(Bios)->ReservedSectors, &(Pbios)->ReservedSectors[0] ); \
+ CopyUchar1(&(Bios)->Fats, &(Pbios)->Fats[0] ); \
+ CopyUchar2(&(Bios)->RootEntries, &(Pbios)->RootEntries[0] ); \
+ CopyUchar2(&(Bios)->Sectors, &(Pbios)->Sectors[0] ); \
+ CopyUchar1(&(Bios)->Media, &(Pbios)->Media[0] ); \
+ CopyUchar2(&(Bios)->SectorsPerFat, &(Pbios)->SectorsPerFat[0] ); \
+ CopyUchar2(&(Bios)->SectorsPerTrack, &(Pbios)->SectorsPerTrack[0] ); \
+ CopyUchar2(&(Bios)->Heads, &(Pbios)->Heads[0] ); \
+ CopyUchar4(&(Bios)->HiddenSectors, &(Pbios)->HiddenSectors[0] ); \
+ CopyUchar4(&(Bios)->LargeSectors, &(Pbios)->LargeSectors[0] ); \
+}
+
+/* Packed versions of the BPB and Boot Sector */
+typedef struct _PACKED_BIOS_PARAMETER_BLOCK
+{
+ UCHAR BytesPerSector[2];
+ UCHAR SectorsPerCluster[1];
+ UCHAR ReservedSectors[2];
+ UCHAR Fats[1];
+ UCHAR RootEntries[2];
+ UCHAR Sectors[2];
+ UCHAR Media[1];
+ UCHAR SectorsPerFat[2];
+ UCHAR SectorsPerTrack[2];
+ UCHAR Heads[2];
+ UCHAR HiddenSectors[4];
+ UCHAR LargeSectors[4];
+} PACKED_BIOS_PARAMETER_BLOCK, *PPACKED_BIOS_PARAMETER_BLOCK;
+
+typedef struct _PACKED_BOOT_SECTOR
+{
+ UCHAR Jump[3];
+ UCHAR Oem[8];
+ PACKED_BIOS_PARAMETER_BLOCK PackedBpb;
+ UCHAR PhysicalDriveNumber;
+ UCHAR CurrentHead;
+ UCHAR Signature;
+ UCHAR Id[4];
+ UCHAR VolumeLabel[11];
+ UCHAR SystemId[8];
+} PACKED_BOOT_SECTOR, *PPACKED_BOOT_SECTOR;
+
+/* Unpacked version of the BPB */
+typedef struct BIOS_PARAMETER_BLOCK
+{
+ USHORT BytesPerSector;
+ UCHAR SectorsPerCluster;
+ USHORT ReservedSectors;
+ UCHAR Fats;
+ USHORT RootEntries;
+ USHORT Sectors;
+ UCHAR Media;
+ USHORT SectorsPerFat;
+ USHORT SectorsPerTrack;
+ USHORT Heads;
+ ULONG32 HiddenSectors;
+ ULONG32 LargeSectors;
+ ULONG32 LargeSectorsPerFat;
+ union
+ {
+ USHORT ExtendedFlags;
+ struct
+ {
+ ULONG ActiveFat:4;
+ ULONG Reserved0:3;
+ ULONG MirrorDisabled:1;
+ ULONG Reserved1:8;
+ };
+ };
+ USHORT FsVersion;
+ ULONG32 RootDirFirstCluster;
+ USHORT FsInfoSector;
+ USHORT BackupBootSector;
+} BIOS_PARAMETER_BLOCK, *PBIOS_PARAMETER_BLOCK;
+
+/* UDFS Structures */
+#include <pshpack1.h>
+typedef struct _TAG
+{
+ USHORT Identifier;
+ USHORT Version;
+ UCHAR Checksum;
+ UCHAR Reserved;
+ USHORT SerialNumber;
+ USHORT Crc;
+ USHORT CrcLength;
+ ULONG Location;
+} TAG, *PTAG;
+
+typedef struct _EXTENT
+{
+ ULONG Length;
+ ULONG Location;
+} EXTENT, *PEXTENT;
+
+typedef struct _AVDP
+{
+ TAG DescriptorTag;
+ EXTENT MainVolumeDescriptorExtent;
+ EXTENT ReserveVolumeDescriptorExtent;
+} AVDP, *PAVDP;
+#include <poppack.h>
+
+/* Filesystem Types */
+typedef enum _FILE_SYSTEM_TYPE
+{
+ FS_TYPE_UNUSED,
+ FS_TYPE_VFAT,
+ FS_TYPE_NTFS,
+ FS_TYPE_CDFS,
+ FS_TYPE_UDFS,
+ FS_TYPE_EXT2,
+ FS_TYPE_BTRFS,
+ FS_TYPE_REISERFS,
+ FS_TYPE_FFS,
+} FILE_SYSTEM_TYPE, *PFILE_SYSTEM_TYPE;
+
+/* FS Recognizer State */
+typedef enum _FS_REC_STATE
+{
+ Pending,
+ Loaded,
+ Unloading
+} FS_REC_STATE, *PFS_REC_STATE;
+
+/* Device extension */
+typedef struct _DEVICE_EXTENSION
+{
+ FS_REC_STATE State;
+ FILE_SYSTEM_TYPE FsType;
+ PDEVICE_OBJECT Alternate;
+} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
+
+/* Prototypes */
+NTSTATUS
+NTAPI
+FsRecCdfsFsControl(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp
+);
+
+NTSTATUS
+NTAPI
+FsRecVfatFsControl(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp
+);
+
+NTSTATUS
+NTAPI
+FsRecNtfsFsControl(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp
+);
+
+NTSTATUS
+NTAPI
+FsRecUdfsFsControl(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp
+);
+
+NTSTATUS
+NTAPI
+FsRecExt2FsControl(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp
+);
+
+NTSTATUS
+NTAPI
+FsRecBtrfsFsControl(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp
+);
+
+NTSTATUS
+NTAPI
+FsRecReiserfsFsControl(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp
+);
+
+NTSTATUS
+NTAPI
+FsRecFfsFsControl(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp
+);
+
+BOOLEAN
+NTAPI
+FsRecGetDeviceSectors(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN ULONG SectorSize,
+ OUT PLARGE_INTEGER SectorCount
+);
+
+BOOLEAN
+NTAPI
+FsRecGetDeviceSectorSize(
+ IN PDEVICE_OBJECT DeviceObject,
+ OUT PULONG SectorSize
+);
+
+BOOLEAN
+NTAPI
+FsRecReadBlock(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PLARGE_INTEGER Offset,
+ IN ULONG Length,
+ IN ULONG SectorSize,
+ IN OUT PVOID *Buffer,
+ OUT PBOOLEAN DeviceError OPTIONAL
+);
+
+NTSTATUS
+NTAPI
+FsRecLoadFileSystem(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PWCHAR DriverServiceName
+);
+
+#endif /* _FS_REC_H */
projects / reactos.git / blobdiff