mirror of
https://github.com/reactos/reactos.git
synced 2024-12-27 17:44:45 +00:00
Fixed typos
Added more safety checks Minor cleanup svn path=/trunk/; revision=1662
This commit is contained in:
Eric Kohl
parent
de10767975
commit
2d5f3d1c74
2 changed files with 245 additions and 174 deletions
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@ -20,7 +20,7 @@
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NTSTATUS
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VfatReadSectors (IN PDEVICE_OBJECT pDeviceObject,
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IN ULONG DiskSector,
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IN ULONG DiskSector,
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IN ULONG SectorCount,
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IN OUT PUCHAR Buffer)
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{
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@ -37,7 +37,7 @@ VfatReadSectors (IN PDEVICE_OBJECT pDeviceObject,
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KeInitializeEvent (&event, NotificationEvent, FALSE);
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sectorSize = BLOCKSIZE * SectorCount;
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DPRINT ("VFATReadSector(pDeviceObject %x, DiskSector %d, Buffer %x)\n",
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DPRINT ("VfatReadSectors(pDeviceObject %x, DiskSector %d, Buffer %x)\n",
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pDeviceObject, DiskSector, Buffer);
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DPRINT ("sectorNumber %08lx:%08lx sectorSize %ld\n",
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(unsigned long int) sectorNumber.u.LowPart,
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@ -49,14 +49,14 @@ VfatReadSectors (IN PDEVICE_OBJECT pDeviceObject,
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pDeviceObject,
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Buffer,
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sectorSize,
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§orNumber,
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&event,
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§orNumber,
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&event,
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&IoStatus);
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if (Irp == NULL)
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{
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DPRINT("IoBuildSynchronousFsdRequest failed\n");
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return(STATUS_UNSUCCESSFUL);;
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return(STATUS_UNSUCCESSFUL);
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}
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DPRINT ("Calling IO Driver... with irp %x\n", Irp);
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@ -73,7 +73,7 @@ VfatReadSectors (IN PDEVICE_OBJECT pDeviceObject,
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if (!NT_SUCCESS (Status))
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{
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DPRINT ("IO failed!!! VFATREadSectors : Error code: %x\n", Status);
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DPRINT ("IO failed!!! VfatReadSectors : Error code: %x\n", Status);
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DPRINT ("(pDeviceObject %x, DiskSector %x, Buffer %x, offset 0x%x%x)\n",
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pDeviceObject, DiskSector, Buffer, sectorNumber.u.HighPart,
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sectorNumber.u.LowPart);
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@ -86,7 +86,7 @@ VfatReadSectors (IN PDEVICE_OBJECT pDeviceObject,
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NTSTATUS
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VfatWriteSectors (IN PDEVICE_OBJECT pDeviceObject,
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IN ULONG DiskSector,
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IN ULONG SectorCount,
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IN ULONG SectorCount,
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IN PUCHAR Buffer)
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{
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LARGE_INTEGER sectorNumber;
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@ -96,7 +96,7 @@ VfatWriteSectors (IN PDEVICE_OBJECT pDeviceObject,
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NTSTATUS Status;
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ULONG sectorSize;
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DPRINT ("VFATWriteSector(pDeviceObject %x, DiskSector %d, Buffer %x)\n",
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DPRINT ("VfatWriteSectors(pDeviceObject %x, DiskSector %d, Buffer %x)\n",
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pDeviceObject, DiskSector, Buffer);
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sectorNumber.u.LowPart = DiskSector << 9;
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@ -134,7 +134,7 @@ VfatWriteSectors (IN PDEVICE_OBJECT pDeviceObject,
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if (!NT_SUCCESS (Status))
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{
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DPRINT1 ("IO failed!!! VFATWriteSectors : Error code: %x\n", Status);
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DPRINT1 ("IO failed!!! VfatWriteSectors : Error code: %x\n", Status);
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return (Status);
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}
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@ -1,4 +1,4 @@
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/* $Id: iface.c,v 1.49 2001/01/16 09:55:02 dwelch Exp $
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/* $Id: iface.c,v 1.50 2001/03/06 08:19:58 ekohl Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -27,7 +27,6 @@
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/* INCLUDES *****************************************************************/
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#include <ddk/ntddk.h>
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#include <wchar.h>
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#define NDEBUG
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#include <debug.h>
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@ -40,185 +39,249 @@ static PDRIVER_OBJECT VfatDriverObject;
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/* FUNCTIONS ****************************************************************/
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BOOLEAN
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VfatHasFileSystem (PDEVICE_OBJECT DeviceToMount)
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static NTSTATUS
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VfatHasFileSystem(PDEVICE_OBJECT DeviceToMount,
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PBOOLEAN RecognizedFS)
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/*
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* FUNCTION: Tests if the device contains a filesystem that can be mounted
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* by this fsd
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*/
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{
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BootSector *Boot;
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BootSector *Boot;
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NTSTATUS Status;
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Boot = ExAllocatePool (NonPagedPool, 512);
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Boot = ExAllocatePool(NonPagedPool, 512);
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/* FIXME: Check status */
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VfatReadSectors (DeviceToMount, 0, 1, (UCHAR *) Boot);
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Status = VfatReadSectors(DeviceToMount, 0, 1, (UCHAR *) Boot);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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DPRINT ("Boot->SysType %.5s\n", Boot->SysType);
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if (strncmp (Boot->SysType, "FAT12", 5) == 0 ||
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strncmp (Boot->SysType, "FAT16", 5) == 0 ||
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strncmp (((struct _BootSector32 *) (Boot))->SysType, "FAT32", 5) == 0)
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{
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ExFreePool (Boot);
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return (TRUE);
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}
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ExFreePool (Boot);
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return (FALSE);
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DPRINT("Boot->SysType %.5s\n", Boot->SysType);
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if (strncmp(Boot->SysType, "FAT12", 5) == 0 ||
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strncmp(Boot->SysType, "FAT16", 5) == 0 ||
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strncmp(((struct _BootSector32 *) (Boot))->SysType, "FAT32", 5) == 0)
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{
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*RecognizedFS = TRUE;
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}
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else
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{
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*RecognizedFS = FALSE;
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}
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ExFreePool(Boot);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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static NTSTATUS
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VfatMountDevice (PDEVICE_EXTENSION DeviceExt, PDEVICE_OBJECT DeviceToMount)
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/*
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* FUNCTION: Mounts the device
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*/
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{
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DPRINT ("Mounting VFAT device...");
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DPRINT ("DeviceExt %x\n", DeviceExt);
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NTSTATUS Status;
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DeviceExt->Boot = ExAllocatePool (NonPagedPool, 512);
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/* FIXME: Check status */
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VfatReadSectors (DeviceToMount, 0, 1, (UCHAR *) DeviceExt->Boot);
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DPRINT("Mounting VFAT device...");
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DPRINT("DeviceExt %x\n", DeviceExt);
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DeviceExt->FATStart = DeviceExt->Boot->ReservedSectors;
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DeviceExt->rootDirectorySectors =
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(DeviceExt->Boot->RootEntries * 32) / DeviceExt->Boot->BytesPerSector;
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DeviceExt->rootStart =
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DeviceExt->FATStart +
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DeviceExt->Boot->FATCount * DeviceExt->Boot->FATSectors;
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DeviceExt->dataStart =
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DeviceExt->rootStart + DeviceExt->rootDirectorySectors;
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DeviceExt->FATEntriesPerSector = DeviceExt->Boot->BytesPerSector / 32;
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DeviceExt->BytesPerCluster = DeviceExt->Boot->SectorsPerCluster *
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DeviceExt->Boot->BytesPerSector;
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if (DeviceExt->BytesPerCluster >= PAGESIZE &&
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(DeviceExt->BytesPerCluster % PAGESIZE) != 0)
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{
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DbgPrint("Invalid cluster size\n");
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KeBugCheck(0);
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}
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else if (DeviceExt->BytesPerCluster < PAGESIZE &&
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(PAGESIZE % DeviceExt->BytesPerCluster) != 0)
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{
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DbgPrint("Invalid cluster size2\n");
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KeBugCheck(0);
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}
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DeviceExt->Boot = ExAllocatePool(NonPagedPool, 512);
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if (strncmp (DeviceExt->Boot->SysType, "FAT12", 5) == 0)
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{
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DbgPrint("FAT12\n");
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DeviceExt->FatType = FAT12;
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}
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else
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if (strncmp
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(((struct _BootSector32 *) (DeviceExt->Boot))->SysType, "FAT32",
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5) == 0)
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{
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DbgPrint("FAT32\n");
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DeviceExt->FatType = FAT32;
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DeviceExt->rootDirectorySectors = DeviceExt->Boot->SectorsPerCluster;
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DeviceExt->rootStart =
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DeviceExt->FATStart + DeviceExt->Boot->FATCount
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* ((struct _BootSector32 *) (DeviceExt->Boot))->FATSectors32;
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DeviceExt->dataStart = DeviceExt->rootStart;
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}
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else
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{
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DbgPrint("FAT16\n");
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DeviceExt->FatType = FAT16;
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}
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Status = VfatReadSectors(DeviceToMount, 0, 1, (UCHAR *) DeviceExt->Boot);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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return STATUS_SUCCESS;
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DeviceExt->FATStart = DeviceExt->Boot->ReservedSectors;
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DeviceExt->rootDirectorySectors =
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(DeviceExt->Boot->RootEntries * 32) / DeviceExt->Boot->BytesPerSector;
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DeviceExt->rootStart =
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DeviceExt->FATStart +
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DeviceExt->Boot->FATCount * DeviceExt->Boot->FATSectors;
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DeviceExt->dataStart =
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DeviceExt->rootStart + DeviceExt->rootDirectorySectors;
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DeviceExt->FATEntriesPerSector = DeviceExt->Boot->BytesPerSector / 32;
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DeviceExt->BytesPerCluster = DeviceExt->Boot->SectorsPerCluster *
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DeviceExt->Boot->BytesPerSector;
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if (DeviceExt->BytesPerCluster >= PAGESIZE &&
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(DeviceExt->BytesPerCluster % PAGESIZE) != 0)
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{
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DbgPrint("Invalid cluster size\n");
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KeBugCheck(0);
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}
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else if (DeviceExt->BytesPerCluster < PAGESIZE &&
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(PAGESIZE % DeviceExt->BytesPerCluster) != 0)
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{
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DbgPrint("Invalid cluster size2\n");
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KeBugCheck(0);
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}
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if (strncmp (DeviceExt->Boot->SysType, "FAT12", 5) == 0)
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{
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DbgPrint("FAT12\n");
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DeviceExt->FatType = FAT12;
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}
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else if (strncmp
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(((struct _BootSector32 *) (DeviceExt->Boot))->SysType, "FAT32",
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5) == 0)
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{
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DbgPrint("FAT32\n");
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DeviceExt->FatType = FAT32;
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DeviceExt->rootDirectorySectors = DeviceExt->Boot->SectorsPerCluster;
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DeviceExt->rootStart =
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DeviceExt->FATStart + DeviceExt->Boot->FATCount
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* ((struct _BootSector32 *) (DeviceExt->Boot))->FATSectors32;
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DeviceExt->dataStart = DeviceExt->rootStart;
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}
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else
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{
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DbgPrint("FAT16\n");
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DeviceExt->FatType = FAT16;
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}
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return STATUS_SUCCESS;
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}
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NTSTATUS
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static NTSTATUS
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VfatMount (PDEVICE_OBJECT DeviceToMount)
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/*
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* FUNCTION: Mount the filesystem
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*/
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{
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PDEVICE_OBJECT DeviceObject;
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PDEVICE_EXTENSION DeviceExt;
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NTSTATUS Status;
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PDEVICE_OBJECT DeviceObject;
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PDEVICE_EXTENSION DeviceExt;
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BOOLEAN RecognizedFS;
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NTSTATUS Status;
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IoCreateDevice (VfatDriverObject,
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sizeof (DEVICE_EXTENSION),
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NULL, FILE_DEVICE_FILE_SYSTEM, 0, FALSE, &DeviceObject);
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DeviceObject->Flags = DeviceObject->Flags | DO_DIRECT_IO;
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DeviceExt = (PVOID) DeviceObject->DeviceExtension;
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// use same vpb as device disk
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DeviceObject->Vpb = DeviceToMount->Vpb;
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VfatMountDevice (DeviceExt, DeviceToMount);
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DeviceObject->Vpb->Flags |= VPB_MOUNTED;
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DeviceExt->StorageDevice = IoAttachDeviceToDeviceStack (DeviceObject,
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Status = VfatHasFileSystem (DeviceToMount, &RecognizedFS);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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if (RecognizedFS == FALSE)
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{
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DPRINT("VFAT: Unrecognized Volume\n");
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return STATUS_UNRECOGNIZED_VOLUME;
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}
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DPRINT("VFAT: Recognized volume\n");
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Status = IoCreateDevice(VfatDriverObject,
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sizeof (DEVICE_EXTENSION),
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NULL,
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FILE_DEVICE_FILE_SYSTEM,
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0,
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FALSE,
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&DeviceObject);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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DeviceObject->Flags = DeviceObject->Flags | DO_DIRECT_IO;
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DeviceExt = (PVOID) DeviceObject->DeviceExtension;
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/* use same vpb as device disk */
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DeviceObject->Vpb = DeviceToMount->Vpb;
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Status = VfatMountDevice (DeviceExt, DeviceToMount);
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if (!NT_SUCCESS(Status))
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{
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/* FIXME: delete device object */
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return Status;
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}
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DeviceObject->Vpb->Flags |= VPB_MOUNTED;
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DeviceExt->StorageDevice = IoAttachDeviceToDeviceStack(DeviceObject,
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DeviceToMount);
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DeviceExt->StreamStorageDevice =
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IoCreateStreamFileObject(NULL, DeviceExt->StorageDevice);
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Status = CcInitializeFileCache(DeviceExt->StreamStorageDevice,
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&DeviceExt->StorageBcb,
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PAGESIZE);
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if (DeviceExt->FatType == FAT12)
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{
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DeviceExt->Fat12StorageDevice =
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IoCreateStreamFileObject(NULL, DeviceExt->StorageDevice);
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Status = CcInitializeFileCache(DeviceExt->Fat12StorageDevice,
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&DeviceExt->Fat12StorageBcb,
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PAGESIZE * 3);
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}
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ExInitializeResourceLite (&DeviceExt->DirResource);
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ExInitializeResourceLite (&DeviceExt->FatResource);
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DeviceExt->StreamStorageDevice = IoCreateStreamFileObject(NULL,
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DeviceExt->StorageDevice);
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Status = CcInitializeFileCache(DeviceExt->StreamStorageDevice,
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&DeviceExt->StorageBcb,
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PAGESIZE);
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if (!NT_SUCCESS(Status))
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{
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/* FIXME: delete device object */
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return Status;
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}
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KeInitializeSpinLock (&DeviceExt->FcbListLock);
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InitializeListHead (&DeviceExt->FcbListHead);
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if (DeviceExt->FatType == FAT12)
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{
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DeviceExt->Fat12StorageDevice =
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IoCreateStreamFileObject(NULL, DeviceExt->StorageDevice);
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Status = CcInitializeFileCache(DeviceExt->Fat12StorageDevice,
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&DeviceExt->Fat12StorageBcb,
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PAGESIZE * 3);
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if (!NT_SUCCESS(Status))
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{
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/* FIXME: delete device object */
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return Status;
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}
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}
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ExInitializeResourceLite (&DeviceExt->DirResource);
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ExInitializeResourceLite (&DeviceExt->FatResource);
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/* read serial number */
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if (DeviceExt->FatType == FAT12 || DeviceExt->FatType == FAT16)
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DeviceObject->Vpb->SerialNumber =
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((struct _BootSector *) (DeviceExt->Boot))->VolumeID;
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else if (DeviceExt->FatType == FAT32)
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DeviceObject->Vpb->SerialNumber =
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((struct _BootSector32 *) (DeviceExt->Boot))->VolumeID;
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KeInitializeSpinLock (&DeviceExt->FcbListLock);
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InitializeListHead (&DeviceExt->FcbListHead);
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/* read volume label */
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ReadVolumeLabel (DeviceExt, DeviceObject->Vpb);
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/* read serial number */
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if (DeviceExt->FatType == FAT12 || DeviceExt->FatType == FAT16)
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DeviceObject->Vpb->SerialNumber =
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((struct _BootSector *) (DeviceExt->Boot))->VolumeID;
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else if (DeviceExt->FatType == FAT32)
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DeviceObject->Vpb->SerialNumber =
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((struct _BootSector32 *) (DeviceExt->Boot))->VolumeID;
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return (STATUS_SUCCESS);
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/* read volume label */
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ReadVolumeLabel(DeviceExt, DeviceObject->Vpb);
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return STATUS_SUCCESS;
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}
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NTSTATUS STDCALL
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VfatFileSystemControl (PDEVICE_OBJECT DeviceObject, PIRP Irp)
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/*
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* FUNCTION: File system control
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*/
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{
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PIO_STACK_LOCATION Stack = IoGetCurrentIrpStackLocation (Irp);
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// PVPB vpb = Stack->Parameters.Mount.Vpb;
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PDEVICE_OBJECT DeviceToMount = Stack->Parameters.Mount.DeviceObject;
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NTSTATUS Status;
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PIO_STACK_LOCATION Stack = IoGetCurrentIrpStackLocation (Irp);
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NTSTATUS Status;
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// DPRINT("VFAT FSC\n");
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DbgPrint ("VFAT FSC\n");
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switch (Stack->MinorFunction)
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{
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case IRP_MN_USER_FS_REQUEST:
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DPRINT1("VFAT FSC: IRP_MN_USER_FS_REQUEST\n");
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Status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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/* FIXME: should make sure that this is actually a mount request! */
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case IRP_MN_MOUNT_VOLUME:
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Status = VfatMount(Stack->Parameters.Mount.DeviceObject);
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break;
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if (VfatHasFileSystem (DeviceToMount))
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{
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DPRINT ("VFAT: Recognized volume\n");
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Status = VfatMount (DeviceToMount);
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}
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else
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{
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DPRINT ("VFAT: Unrecognized Volume\n");
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Status = STATUS_UNRECOGNIZED_VOLUME;
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}
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case IRP_MN_VERIFY_VOLUME:
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DPRINT1("VFAT FSC: IRP_MN_VERIFY_VOLUME\n");
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Status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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Irp->IoStatus.Status = Status;
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Irp->IoStatus.Information = 0;
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default:
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DPRINT1("VFAT FSC: MinorFunction %d\n", Stack->MinorFunction);
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Status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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}
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IoCompleteRequest (Irp, IO_NO_INCREMENT);
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return (Status);
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Irp->IoStatus.Status = Status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest (Irp, IO_NO_INCREMENT);
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return (Status);
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}
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||||
|
||||
|
||||
NTSTATUS STDCALL
|
||||
DriverEntry (PDRIVER_OBJECT _DriverObject, PUNICODE_STRING RegistryPath)
|
||||
/*
|
||||
|
|
@ -229,42 +292,50 @@ DriverEntry (PDRIVER_OBJECT _DriverObject, PUNICODE_STRING RegistryPath)
|
|||
* RETURNS: Success or failure
|
||||
*/
|
||||
{
|
||||
PDEVICE_OBJECT DeviceObject;
|
||||
NTSTATUS ret;
|
||||
UNICODE_STRING DeviceName;
|
||||
PDEVICE_OBJECT DeviceObject;
|
||||
UNICODE_STRING DeviceName;
|
||||
NTSTATUS Status;
|
||||
|
||||
DbgPrint ("VFAT 0.0.6\n");
|
||||
DbgPrint("VFAT 0.0.6\n");
|
||||
|
||||
VfatDriverObject = _DriverObject;
|
||||
VfatDriverObject = _DriverObject;
|
||||
|
||||
RtlInitUnicodeString (&DeviceName, L"\\Device\\Vfat");
|
||||
ret = IoCreateDevice (VfatDriverObject, 0, &DeviceName,
|
||||
FILE_DEVICE_FILE_SYSTEM, 0, FALSE, &DeviceObject);
|
||||
if (ret != STATUS_SUCCESS)
|
||||
{
|
||||
return (ret);
|
||||
}
|
||||
RtlInitUnicodeString(&DeviceName,
|
||||
L"\\Device\\Vfat");
|
||||
Status = IoCreateDevice(VfatDriverObject,
|
||||
0,
|
||||
&DeviceName,
|
||||
FILE_DEVICE_FILE_SYSTEM,
|
||||
0,
|
||||
FALSE,
|
||||
&DeviceObject);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
return (Status);
|
||||
}
|
||||
|
||||
DeviceObject->Flags = DO_DIRECT_IO;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_CLOSE] = VfatClose;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_CREATE] = VfatCreate;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_READ] = VfatRead;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_WRITE] = VfatWrite;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] =
|
||||
VfatFileSystemControl;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] =
|
||||
VfatQueryInformation;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] =
|
||||
VfatSetInformation;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] =
|
||||
VfatDirectoryControl;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] =
|
||||
VfatQueryVolumeInformation;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = VfatShutdown;
|
||||
DeviceObject->Flags = DO_DIRECT_IO;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_CLOSE] = VfatClose;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_CREATE] = VfatCreate;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_READ] = VfatRead;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_WRITE] = VfatWrite;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] =
|
||||
VfatFileSystemControl;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] =
|
||||
VfatQueryInformation;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] =
|
||||
VfatSetInformation;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] =
|
||||
VfatDirectoryControl;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] =
|
||||
VfatQueryVolumeInformation;
|
||||
VfatDriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = VfatShutdown;
|
||||
|
||||
VfatDriverObject->DriverUnload = NULL;
|
||||
VfatDriverObject->DriverUnload = NULL;
|
||||
|
||||
IoRegisterFileSystem (DeviceObject);
|
||||
IoRegisterFileSystem(DeviceObject);
|
||||
|
||||
return (STATUS_SUCCESS);
|
||||
return STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
/* EOF */
|
||||
|
|
|
|||
Loading…
Reference in a new issue