[fireball] 39030: Alex Vlasov - Move and rewrite FAT in-memory structures to fatstruc.h. - Remove PACKED_LFN_ENTRY structure. - Add declarations of VCB functions (init, uninit), and FAT scanning.
23 Jan
2009
23 Jan
'09
9:49 a.m.
Author: fireball
Date: Fri Jan 23 03:49:45 2009
New Revision: 39030
URL: http://svn.reactos.org/svn/reactos?rev=39030&view=rev
Log:
Alex Vlasov
- Move and rewrite FAT in-memory structures to fatstruc.h.
- Remove PACKED_LFN_ENTRY structure.
- Add declarations of VCB functions (init, uninit), and FAT scanning.
Added:
trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h (with props)
Modified:
trunk/reactos/drivers/filesystems/fastfat_new/fastfat.c
trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h
trunk/reactos/drivers/filesystems/fastfat_new/fat.h
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fastfat.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fastfat.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fastfat.c [iso-8859-1] Fri Jan 23
03:49:45 2009
@@ -84,7 +84,7 @@
NULL,
NULL,
0,
- sizeof(VFATFCB),
+ sizeof(FCB),
TAG_FCB,
0);
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h [iso-8859-1] Fri Jan 23
03:49:45 2009
@@ -2,189 +2,11 @@
#include <ntdddisk.h>
#include <reactos/helper.h>
#include <debug.h>
+#include <fat.h>
+#include <fatstruc.h>
-/* FAT on-disk data structures */
-#include <fat.h>
-
-/* File system types */
-#define FAT16 (1)
-#define FAT12 (2)
-#define FAT32 (3)
-#define FATX16 (4)
-#define FATX32 (5)
-
-/* VCB Flags */
-#define VCB_VOLUME_LOCKED 0x0001
-#define VCB_DISMOUNT_PENDING 0x0002
-#define VCB_IS_FATX 0x0004
-#define VCB_IS_DIRTY 0x4000 /* Volume is dirty */
-#define VCB_CLEAR_DIRTY 0x8000 /* Clean dirty flag at shutdown */
-
-typedef struct
-{
- ULONG VolumeID;
- ULONG FATStart;
- ULONG FATCount;
- ULONG FATSectors;
- ULONG rootDirectorySectors;
- ULONG rootStart;
- ULONG dataStart;
- ULONG RootCluster;
- ULONG SectorsPerCluster;
- ULONG BytesPerSector;
- ULONG BytesPerCluster;
- ULONG NumberOfClusters;
- ULONG FatType;
- ULONG Sectors;
- BOOLEAN FixedMedia;
-} FATINFO, *PFATINFO;
-
-struct _VFATFCB;
-struct _VFAT_DIRENTRY_CONTEXT;
-
-typedef struct DEVICE_EXTENSION *PDEVICE_EXTENSION;
-
-typedef struct _DEVICE_EXTENSION
-{
- ERESOURCE DirResource;
- ERESOURCE FatResource;
-
- KSPIN_LOCK FcbListLock;
- LIST_ENTRY FcbListHead;
- ULONG HashTableSize;
- struct _HASHENTRY** FcbHashTable;
-
- PDEVICE_OBJECT StorageDevice;
- PFILE_OBJECT FATFileObject;
- FATINFO FatInfo;
- ULONG LastAvailableCluster;
- ULONG AvailableClusters;
- BOOLEAN AvailableClustersValid;
- ULONG Flags;
- struct _VFATFCB * VolumeFcb;
-
- ULONG BaseDateYear;
-
- LIST_ENTRY VolumeListEntry;
-} DEVICE_EXTENSION;
-
-typedef struct _FAT_GLOBAL_DATA
-{
- ERESOURCE Resource;
- PDRIVER_OBJECT DriverObject;
- PDEVICE_OBJECT DiskDeviceObject;
- NPAGED_LOOKASIDE_LIST NonPagedFcbList;
- NPAGED_LOOKASIDE_LIST ResourceList;
- NPAGED_LOOKASIDE_LIST IrpContextList;
- FAST_IO_DISPATCH FastIoDispatch;
- CACHE_MANAGER_CALLBACKS CacheMgrCallbacks;
- CACHE_MANAGER_CALLBACKS CacheMgrNoopCallbacks;
-} FAT_GLOBAL_DATA, *VFAT_GLOBAL_DATA;
-
-extern FAT_GLOBAL_DATA FatGlobalData;
-
-/* FCB flags */
-#define FCB_CACHE_INITIALIZED 0x0001
-#define FCB_DELETE_PENDING 0x0002
-#define FCB_IS_FAT 0x0004
-#define FCB_IS_PAGE_FILE 0x0008
-#define FCB_IS_VOLUME 0x0010
-#define FCB_IS_DIRTY 0x0020
-#define FCB_IS_FATX_ENTRY 0x0040
-
-typedef struct _VFATFCB
-{
- /* FCB header required by ROS/NT */
- FSRTL_COMMON_FCB_HEADER RFCB;
- SECTION_OBJECT_POINTERS SectionObjectPointers;
- ERESOURCE MainResource;
- ERESOURCE PagingIoResource;
- /* end FCB header required by ROS/NT */
-
- /* Pointer to attributes in entry */
- PUCHAR Attributes;
-
- /* long file name, points into PathNameBuffer */
- UNICODE_STRING LongNameU;
-
- /* short file name */
- UNICODE_STRING ShortNameU;
-
- /* directory name, points into PathNameBuffer */
- UNICODE_STRING DirNameU;
-
- /* path + long file name 260 max*/
- UNICODE_STRING PathNameU;
-
- /* buffer for PathNameU */
- PWCHAR PathNameBuffer;
-
- /* buffer for ShortNameU */
- WCHAR ShortNameBuffer[13];
-
- /* */
- LONG RefCount;
-
- /* List of FCB's for this volume */
- LIST_ENTRY FcbListEntry;
-
- /* pointer to the parent fcb */
- struct _VFATFCB* parentFcb;
-
- /* Flags for the fcb */
- ULONG Flags;
-
- /* pointer to the file object which has initialized the fcb */
- PFILE_OBJECT FileObject;
-
- /* Directory index for the short name entry */
- ULONG dirIndex;
-
- /* Directory index where the long name starts */
- ULONG startIndex;
-
- /* Share access for the file object */
- SHARE_ACCESS FCBShareAccess;
-
- /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */
- ULONG OpenHandleCount;
-
- /* List of byte-range locks for this file */
- FILE_LOCK FileLock;
-
- /*
- * Optimalization: caching of last read/write cluster+offset pair. Can't
- * be in VFATCCB because it must be reset everytime the allocated clusters
- * change.
- */
- FAST_MUTEX LastMutex;
- ULONG LastCluster;
- ULONG LastOffset;
-} VFATFCB, *PVFATFCB;
-
-typedef struct _VFATCCB
-{
- LARGE_INTEGER CurrentByteOffset;
- /* for DirectoryControl */
- ULONG Entry;
- /* for DirectoryControl */
- UNICODE_STRING SearchPattern;
-} VFATCCB, *PVFATCCB;
-
-/* Volume Control Block */
-typedef struct _VCB
-{
- FSRTL_ADVANCED_FCB_HEADER VolumeFileHeader;
-} VCB, *PVCB;
-
-/* Volume Device Object */
-typedef struct _VOLUME_DEVICE_OBJECT
-{
- DEVICE_OBJECT DeviceObject;
- FSRTL_COMMON_FCB_HEADER VolumeHeader;
- VCB Vcb; /* Must be the last entry! */
-} VOLUME_DEVICE_OBJECT, *PVOLUME_DEVICE_OBJECT;
-
+#define Add2Ptr(P,I,T) ((T)((PUCHAR)(P) + (I)))
+#define PtrOffset(B,O) ((ULONG)((ULONG_PTR)(O) - (ULONG_PTR)(B)))
#ifndef TAG
#define TAG(A, B, C, D) (ULONG)(((A)<<0) + ((B)<<8) + ((C)<<16) +
((D)<<24))
@@ -194,50 +16,6 @@
#define TAG_FCB TAG('V', 'F', 'C', 'B')
#define TAG_IRP TAG('V', 'I', 'R', 'P')
#define TAG_VFAT TAG('V', 'F', 'A', 'T')
-
-typedef struct __DOSTIME
-{
- USHORT Second:5;
- USHORT Minute:6;
- USHORT Hour:5;
-}
-DOSTIME, *PDOSTIME;
-
-typedef struct __DOSDATE
-{
- USHORT Day:5;
- USHORT Month:4;
- USHORT Year:5;
-}
-DOSDATE, *PDOSDATE;
-
-#define IRPCONTEXT_CANWAIT 0x0001
-#define IRPCONTEXT_PENDINGRETURNED 0x0002
-#define IRPCONTEXT_STACK_IO_CONTEXT 0x0004
-
-typedef struct _FAT_IRP_CONTEXT
-{
- PIRP Irp;
- PDEVICE_OBJECT DeviceObject;
- UCHAR MajorFunction;
- UCHAR MinorFunction;
- PFILE_OBJECT FileObject;
- ULONG Flags;
- PVCB Vcb;
- ULONG PinCount;
- struct _FAT_IO_CONTEXT *FatIoContext;
-
- PDEVICE_EXTENSION DeviceExt;
- WORK_QUEUE_ITEM WorkQueueItem;
- PIO_STACK_LOCATION Stack;
- KEVENT Event;
-} FAT_IRP_CONTEXT, *PFAT_IRP_CONTEXT;
-
-typedef struct _FAT_IO_CONTEXT
-{
- PMDL ZeroMdl;
-} _FAT_IO_CONTEXT, *PFAT_IO_CONTEXT;
-
/* ------------------------------------------------------ shutdown.c */
DRIVER_DISPATCH FatShutdown;
@@ -337,6 +115,24 @@
/* ----------------------------------------------------------- fat.c */
+NTSTATUS
+FatInitializeVcb(
+ IN PVCB Vcb,
+ IN PDEVICE_OBJECT TargetDeviceObject,
+ IN PVPB Vpb);
+
+VOID
+FatUninitializeVcb(
+ IN PVCB Vcb);
+
+ULONG
+FatScanFat(
+ IN PFCB Fcb,
+ IN LONGLONG Vbo, OUT PLONGLONG Lbo,
+ IN OUT PLONGLONG Length,
+ OUT PULONG Index,
+ IN BOOLEAN CanWait);
+
/* ------------------------------------------------------ device.c */
NTSTATUS NTAPI
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fat.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fat.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fat.h [iso-8859-1] Fri Jan 23 03:49:45
2009
@@ -283,15 +283,4 @@
FAT_DIRENT_ATTR_SYSTEM | \
FAT_DIRENT_ATTR_VOLUME_ID)
-typedef struct _PACKED_LFN_DIRENT {
- UCHAR Ordinal; // offset = 0
- UCHAR Name1[10]; // offset = 1 (Really 5 chars, but not WCHAR aligned)
- UCHAR Attributes; // offset = 11
- UCHAR Type; // offset = 12
- UCHAR Checksum; // offset = 13
- WCHAR Name2[6]; // offset = 14
- USHORT MustBeZero; // offset = 26
- WCHAR Name3[2]; // offset = 28
-} PACKED_LFN_DIRENT; // sizeof = 32
-
#endif//__FAT_H__
Added: trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h (added)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h [iso-8859-1] Fri Jan 23
03:49:45 2009
@@ -1,0 +1,202 @@
+#ifndef __STRUCT_H__
+#define __STRUCT_H__
+
+typedef struct _FAT_SCAN_CONTEXT *PFAT_SCAN_CONTEXT;
+typedef struct _FAT_IO_CONTEXT *PFAT_IO_CONTEXT;
+typedef PVOID PBCB;
+
+typedef struct _FAT_GLOBAL_DATA
+{
+ ERESOURCE Resource;
+ PDRIVER_OBJECT DriverObject;
+ PDEVICE_OBJECT DiskDeviceObject;
+ LIST_ENTRY VcbListHead;
+ NPAGED_LOOKASIDE_LIST NonPagedFcbList;
+ NPAGED_LOOKASIDE_LIST ResourceList;
+ NPAGED_LOOKASIDE_LIST IrpContextList;
+ FAST_IO_DISPATCH FastIoDispatch;
+ CACHE_MANAGER_CALLBACKS CacheMgrCallbacks;
+ CACHE_MANAGER_CALLBACKS CacheMgrNoopCallbacks;
+ BOOLEAN Win31FileSystem;
+ /* Jan 1, 1980 System Time */
+ LARGE_INTEGER DefaultFileTime;
+} FAT_GLOBAL_DATA;
+
+#define IRPCONTEXT_CANWAIT 0x0001
+#define IRPCONTEXT_PENDINGRETURNED 0x0002
+#define IRPCONTEXT_STACK_IO_CONTEXT 0x0004
+#define IRPCONTEXT_WRITETHROUGH 0x0008
+#define IRPCONTEXT_TOPLEVEL 0x0010
+
+typedef struct _FAT_IRP_CONTEXT
+{
+ PIRP Irp;
+ PDEVICE_OBJECT DeviceObject;
+ UCHAR MajorFunction;
+ UCHAR MinorFunction;
+ PFILE_OBJECT FileObject;
+ ULONG Flags;
+ struct _VCB *Vcb;
+ ULONG PinCount;
+ struct _FAT_IO_CONTEXT *FatIoContext;
+
+ WORK_QUEUE_ITEM WorkQueueItem;
+ PIO_STACK_LOCATION Stack;
+ KEVENT Event;
+} FAT_IRP_CONTEXT, *PFAT_IRP_CONTEXT;
+
+typedef struct _FAT_IO_CONTEXT
+{
+ PMDL ZeroMdl;
+ PIRP MasterIrp;
+ LONG IrpCount;
+ union
+ {
+ struct
+ {
+ PERESOURCE Resource;
+ PERESOURCE PagingIoResource;
+ ERESOURCE_THREAD ResourceThreadId;
+ ULONG RequestedByteCount;
+ PFILE_OBJECT FileObject;
+ BOOLEAN ReadOperation;
+ } Async;
+ KEVENT SyncEvent;
+ } Wait;
+ PIRP Irp[0];
+} FAT_IO_CONTEXT;
+
+typedef ULONG (*PFAT_SCANFAT_FOR_CONTINOUS_RUN_ROUTINE) (struct _FAT_SCAN_CONTEXT*,
PULONG, BOOLEAN);
+typedef ULONG (*PFAT_SETFAT_CONTINOUS_RUN_ROUTINE) (PFAT_SCAN_CONTEXT, ULONG, ULONG,
BOOLEAN);
+typedef ULONG (*PFAT_SCANFAT_FOR_VALUE_RUN_ROUTINE) (PFAT_SCAN_CONTEXT, PULONG, ULONG,
BOOLEAN);
+typedef ULONG (*PFAT_SETFAT_VALUE_RUN_ROUTINE) (PFAT_SCAN_CONTEXT, ULONG, ULONG, ULONG,
BOOLEAN);
+
+typedef struct _FAT_METHODS {
+ PFAT_SCANFAT_FOR_CONTINOUS_RUN_ROUTINE ScanContinousRun;
+ PFAT_SETFAT_CONTINOUS_RUN_ROUTINE SetContinousRun;
+ PFAT_SCANFAT_FOR_VALUE_RUN_ROUTINE ScanValueRun;
+ PFAT_SETFAT_VALUE_RUN_ROUTINE SetValueRun;
+} FAT_METHODS, *PFAT_METHODS;
+
+#define FAT_NTC_VCB (USHORT) 'VF'
+/* Volume Control Block */
+typedef struct _VCB
+{
+ FSRTL_ADVANCED_FCB_HEADER Header;
+ FAST_MUTEX HeaderMutex;
+ SECTION_OBJECT_POINTERS SectionObjectPointers;
+
+ PFILE_OBJECT VolumeFileObject;
+ PDEVICE_OBJECT TargetDeviceObject;
+ LIST_ENTRY VcbLinks;
+
+ /* Volume Characteristics: */
+ ULONG SerialNumber;
+ BIOS_PARAMETER_BLOCK Bpb;
+ ULONG BytesPerClusterLog;
+ ULONG BytesPerCluster;
+ ULONG SectorsPerFat;
+ ULONG DataArea;
+ ULONG Sectors;
+ ULONG Clusters;
+ ULONG IndexDepth;
+ ULONG RootDirent;
+ ULONG RootDirentSectors;
+ LONGLONG BeyoundLastClusterInFat;
+ FAT_METHODS Methods;
+ /* Root Directory Fcb: */
+ struct _FCB *RootFcb;
+} VCB, *PVCB;
+
+#define VcbToVolumeDeviceObject(xVcb) \
+ CONTAINING_RECORD((xVcb), VOLUME_DEVICE_OBJECT, Vcb))
+
+#define VcbToDeviceObject(xVcb) \
+ &(VcbToVolumeDeviceObject(xVcb)->DeviceObject)
+
+
+#define SectorsToBytes(xVcb, xSectrors) \
+ ((xVcb)->Bpb.BytesPerSector * (xSectrors))
+
+#define BytesToSectors(xVcb, xBytes) \
+ ((xBytes + (xVcb)->Bpb.BytesPerSector - 1) / (xVcb)->Bpb.BytesPerSector)
+
+#define SectorsToClusters(xVcb, xSectors) \
+ ((xSectors + (xVcb)->Bpb.SectorsPerCluster - 1) / (xVcb)->Bpb.SectorsPerCluster)
+
+#define VCB_FAT_BITMAP_SIZE 0x10000
+#define VcbFatBitmapIndex(xCluster) ((xCluster)/VCB_FAT_BITMAP_SIZE)
+
+/* Volume Device Object */
+typedef struct _VOLUME_DEVICE_OBJECT
+{
+ DEVICE_OBJECT DeviceObject;
+ union {
+ FSRTL_COMMON_FCB_HEADER VolumeHeader;
+ VCB Vcb; /* Must be the last entry! */
+ };
+} VOLUME_DEVICE_OBJECT, *PVOLUME_DEVICE_OBJECT;
+//
+// Short name always exists in FAT
+//
+enum _FCB_NAME_TYPE {
+ FcbShortName = 0x0,
+ FcbLongName
+} FCB_NAME_TYPE;
+
+typedef struct _FCB_NAME_LINK {
+ RTL_SPLAY_LINKS Links;
+ UNICODE_STRING String;
+ UCHAR Type;
+} FCB_NAME_LINK, *PFCB_NAME_LINK;
+
+#define FAT_NTC_FCB (USHORT) 'CF'
+#define FAT_NTC_DCB (USHORT) 'DF'
+
+typedef struct _FCB
+{
+ FSRTL_ADVANCED_FCB_HEADER Header;
+ /*
+ * Later we might want to move the next four fields
+ * into a separate structureif we decide to split
+ * FCB into paged and non paged parts
+ * (as it is done in MS implementation
+ */
+ FAST_MUTEX HeaderMutex;
+ SECTION_OBJECT_POINTERS SectionObjectPointers;
+ ERESOURCE Resource;
+ ERESOURCE PagingIoResource;
+
+ FILE_LOCK Lock;
+ /* Reference to the Parent Dcb*/
+ struct _FCB *ParentFcb;
+ /* Pointer to a Vcb */
+ PVCB Vcb;
+ /* Mcb mapping Vbo->Lbo */
+ LARGE_MCB Mcb;
+ ULONG FirstCluster;
+ /* Links into FCB Trie */
+ FCB_NAME_LINK FileName[0x2];
+ /* Buffer for the short name */
+ WCHAR ShortNameBuffer[0xc];
+ union
+ {
+ struct
+ {
+ /* Bitmap to search for free dirents. */
+ /* RTL_BITMAP Bitmap; */
+ PRTL_SPLAY_LINKS SplayLinks;
+ } Dcb;
+ };
+} FCB, *PFCB;
+
+typedef struct _CCB
+{
+ LARGE_INTEGER CurrentByteOffset;
+ ULONG Entry;
+ UNICODE_STRING SearchPattern;
+} CCB, *PCCB;
+
+extern FAT_GLOBAL_DATA FatGlobalData;
+
+#endif//__STRUCT_H__
Propchange: trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h
------------------------------------------------------------------------------
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