mirror of
https://github.com/reactos/reactos.git
synced 2025-04-04 12:39:35 +00:00
Moved FAT32 code to a sepatate file.
Added hack for HiddenSectors value. This is needed to boot FreeLoader. svn path=/trunk/; revision=5752
This commit is contained in:
Eric Kohl
parent
b8eace220f
commit
c07929b227
5 changed files with 519 additions and 480 deletions
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@ -1,4 +1,4 @@
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# $Id: Makefile,v 1.3 2003/08/21 15:33:48 ekohl Exp $
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# $Id: Makefile,v 1.4 2003/08/22 13:53:02 ekohl Exp $
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PATH_TO_TOP = ../../..
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@ -11,6 +11,7 @@ TARGET_CFLAGS += -D_DISABLE_TIDENTS
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TARGET_OBJECTS = \
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fat16.o \
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fat32.o \
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vfatlib.o
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include $(PATH_TO_TOP)/rules.mak
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@ -297,7 +297,7 @@ Fat16Format (HANDLE FileHandle,
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BootSector.FATSectors = 0; /* Set later. See below. */
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BootSector.SectorsPerTrack = DiskGeometry->SectorsPerTrack;
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BootSector.Heads = DiskGeometry->TracksPerCylinder;
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BootSector.HiddenSectors = PartitionInfo->HiddenSectors;
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BootSector.HiddenSectors = DiskGeometry->SectorsPerTrack; //PartitionInfo->HiddenSectors; /* FIXME: Hack! */
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BootSector.SectorsHuge = PartitionInfo->PartitionLength.QuadPart >>
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GetShiftCount(BootSector.BytesPerSector); /* Use shifting to avoid 64-bit division */
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BootSector.Drive = 0xff; /* No BIOS boot drive available */
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463
reactos/lib/fslib/vfatlib/fat32.c
Normal file
463
reactos/lib/fslib/vfatlib/fat32.c
Normal file
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@ -0,0 +1,463 @@
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS VFAT filesystem library
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* FILE: fat16.c
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* PURPOSE: Fat16 support
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* PROGRAMMERS: Eric Kohl (ekohl@rz-online.de)
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* REVISIONS:
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* EK 05/04-2003 Created
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*/
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#define NDEBUG
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#include <debug.h>
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#define NTOS_MODE_USER
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#include <ntos.h>
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#include <ddk/ntddscsi.h>
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#include "vfatlib.h"
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static ULONG
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GetShiftCount(ULONG Value)
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{
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ULONG i = 1;
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while (Value > 0)
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{
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i++;
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Value /= 2;
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}
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return i - 2;
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}
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static NTSTATUS
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Fat32WriteBootSector(IN HANDLE FileHandle,
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IN PFAT32_BOOT_SECTOR BootSector)
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{
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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UNICODE_STRING Name;
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NTSTATUS Status;
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PUCHAR NewBootSector;
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LARGE_INTEGER FileOffset;
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/* Allocate buffer for new bootsector */
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NewBootSector = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
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0,
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SECTORSIZE);
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if (NewBootSector == NULL)
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return(STATUS_INSUFFICIENT_RESOURCES);
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/* Zero the new bootsector */
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memset(NewBootSector, 0, SECTORSIZE);
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/* Copy FAT32 BPB to new bootsector */
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memcpy((NewBootSector + 3),
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&BootSector->OEMName[0],
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87); /* FAT32 BPB length (up to (not including) Res2) */
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/* Write sector 0 */
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FileOffset.QuadPart = 0ULL;
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Status = NtWriteFile(FileHandle,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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NewBootSector,
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SECTORSIZE,
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&FileOffset,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
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RtlFreeHeap(RtlGetProcessHeap(), 0, NewBootSector);
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return(Status);
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}
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/* Write backup boot sector */
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if (BootSector->BootBackup != 0x0000)
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{
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FileOffset.QuadPart = (ULONGLONG)((ULONG) BootSector->BootBackup * SECTORSIZE);
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Status = NtWriteFile(FileHandle,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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NewBootSector,
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SECTORSIZE,
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&FileOffset,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
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RtlFreeHeap(RtlGetProcessHeap(), 0, NewBootSector);
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return(Status);
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}
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}
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/* Free the new boot sector */
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RtlFreeHeap(RtlGetProcessHeap(), 0, NewBootSector);
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return(Status);
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}
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static NTSTATUS
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Fat32WriteFsInfo(IN HANDLE FileHandle,
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IN PFAT32_BOOT_SECTOR BootSector)
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{
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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UNICODE_STRING Name;
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NTSTATUS Status;
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PFAT32_FSINFO FsInfo;
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LARGE_INTEGER FileOffset;
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/* Allocate buffer for new sector */
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FsInfo = (PFAT32_FSINFO)RtlAllocateHeap(RtlGetProcessHeap(),
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0,
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BootSector->BytesPerSector);
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if (FsInfo == NULL)
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return(STATUS_INSUFFICIENT_RESOURCES);
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/* Zero the new sector */
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memset(FsInfo, 0, BootSector->BytesPerSector);
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FsInfo->LeadSig = 0x41615252;
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FsInfo->StrucSig = 0x61417272;
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FsInfo->FreeCount = 0xffffffff;
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FsInfo->NextFree = 0xffffffff;
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FsInfo->TrailSig = 0xaa550000;
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/* Write sector */
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FileOffset.QuadPart = BootSector->FSInfoSector * BootSector->BytesPerSector;
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Status = NtWriteFile(FileHandle,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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FsInfo,
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BootSector->BytesPerSector,
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&FileOffset,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
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RtlFreeHeap(RtlGetProcessHeap(), 0, FsInfo);
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return(Status);
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}
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/* Free the new sector buffer */
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RtlFreeHeap(RtlGetProcessHeap(), 0, FsInfo);
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return(Status);
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}
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static NTSTATUS
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Fat32WriteFAT(IN HANDLE FileHandle,
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ULONG SectorOffset,
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IN PFAT32_BOOT_SECTOR BootSector)
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{
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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UNICODE_STRING Name;
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NTSTATUS Status;
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PUCHAR Buffer;
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LARGE_INTEGER FileOffset;
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ULONG i;
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ULONG Size;
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ULONG Sectors;
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/* Allocate buffer */
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Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
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0,
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64 * 1024);
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if (Buffer == NULL)
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return(STATUS_INSUFFICIENT_RESOURCES);
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/* Zero the buffer */
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memset(Buffer, 0, 64 * 1024);
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/* FAT cluster 0 */
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Buffer[0] = 0xf8; /* Media type */
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Buffer[1] = 0xff;
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Buffer[2] = 0xff;
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Buffer[3] = 0x0f;
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/* FAT cluster 1 */
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Buffer[4] = 0xff; /* Clean shutdown, no disk read/write errors, end-of-cluster (EOC) mark */
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Buffer[5] = 0xff;
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Buffer[6] = 0xff;
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Buffer[7] = 0x0f;
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/* FAT cluster 2 */
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Buffer[8] = 0xff; /* End of root directory */
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Buffer[9] = 0xff;
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Buffer[10] = 0xff;
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Buffer[11] = 0x0f;
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/* Write first sector of the FAT */
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FileOffset.QuadPart = (SectorOffset + BootSector->ReservedSectors) * BootSector->BytesPerSector;
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Status = NtWriteFile(FileHandle,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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Buffer,
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BootSector->BytesPerSector,
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&FileOffset,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
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RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
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return(Status);
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}
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/* Zero the begin of the buffer */
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memset(Buffer, 0, 12);
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/* Zero the rest of the FAT */
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Sectors = 64 * 1024 / BootSector->BytesPerSector;
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for (i = 1; i < BootSector->FATSectors32; i += Sectors)
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{
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/* Zero some sectors of the FAT */
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FileOffset.QuadPart = (SectorOffset + BootSector->ReservedSectors + i) * BootSector->BytesPerSector;
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Size = BootSector->FATSectors32 - i;
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if (Size > Sectors)
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{
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Size = Sectors;
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}
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Size *= BootSector->BytesPerSector;
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Status = NtWriteFile(FileHandle,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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Buffer,
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Size,
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&FileOffset,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
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RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
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return(Status);
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}
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}
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/* Free the buffer */
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RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
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return(Status);
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}
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static NTSTATUS
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Fat32WriteRootDirectory(IN HANDLE FileHandle,
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IN PFAT32_BOOT_SECTOR BootSector)
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{
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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NTSTATUS Status;
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PUCHAR Buffer;
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LARGE_INTEGER FileOffset;
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ULONGLONG FirstDataSector;
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ULONGLONG FirstRootDirSector;
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/* Allocate buffer for the cluster */
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Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
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0,
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BootSector->SectorsPerCluster * BootSector->BytesPerSector);
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if (Buffer == NULL)
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return(STATUS_INSUFFICIENT_RESOURCES);
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/* Zero the buffer */
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memset(Buffer, 0, BootSector->SectorsPerCluster * BootSector->BytesPerSector);
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DPRINT("BootSector->ReservedSectors = %lu\n", BootSector->ReservedSectors);
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DPRINT("BootSector->FATSectors32 = %lu\n", BootSector->FATSectors32);
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DPRINT("BootSector->RootCluster = %lu\n", BootSector->RootCluster);
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DPRINT("BootSector->SectorsPerCluster = %lu\n", BootSector->SectorsPerCluster);
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/* Write cluster */
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FirstDataSector = BootSector->ReservedSectors +
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(BootSector->FATCount * BootSector->FATSectors32) + 0 /* RootDirSectors */;
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DPRINT("FirstDataSector = %lu\n", FirstDataSector);
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FirstRootDirSector = ((BootSector->RootCluster - 2) * BootSector->SectorsPerCluster) + FirstDataSector;
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FileOffset.QuadPart = FirstRootDirSector * BootSector->BytesPerSector;
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DPRINT("FirstRootDirSector = %lu\n", FirstRootDirSector);
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DPRINT("FileOffset = %lu\n", FileOffset.QuadPart);
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Status = NtWriteFile(FileHandle,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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Buffer,
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BootSector->SectorsPerCluster * BootSector->BytesPerSector,
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&FileOffset,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
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RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
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return(Status);
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}
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/* Free the buffer */
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RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
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return(Status);
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}
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NTSTATUS
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Fat32Format (HANDLE FileHandle,
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PPARTITION_INFORMATION PartitionInfo,
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PDISK_GEOMETRY DiskGeometry,
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PUNICODE_STRING Label,
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BOOL QuickFormat,
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DWORD ClusterSize,
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PFMIFSCALLBACK Callback)
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{
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FAT32_BOOT_SECTOR BootSector;
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ANSI_STRING VolumeLabel;
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ULONG RootDirSectors;
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ULONG TmpVal1;
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ULONG TmpVal2;
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ULONG TmpVal3;
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NTSTATUS Status;
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/* Calculate cluster size */
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if (ClusterSize == 0)
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{
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if (PartitionInfo->PartitionLength.QuadPart < 8ULL * 1024ULL * 1024ULL * 1024ULL)
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{
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/* Partition < 8GB ==> 4KB Cluster */
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ClusterSize = 4096;
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}
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else if (PartitionInfo->PartitionLength.QuadPart < 16ULL * 1024ULL * 1024ULL * 1024ULL)
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{
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/* Partition 8GB - 16GB ==> 8KB Cluster */
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ClusterSize = 8192;
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}
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else if (PartitionInfo->PartitionLength.QuadPart < 32ULL * 1024ULL * 1024ULL * 1024ULL)
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{
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/* Partition 16GB - 32GB ==> 16KB Cluster */
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ClusterSize = 16384;
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}
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else
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{
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/* Partition >= 32GB ==> 32KB Cluster */
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ClusterSize = 32768;
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}
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}
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memset(&BootSector, 0, sizeof(FAT32_BOOT_SECTOR));
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memcpy(&BootSector.OEMName[0], "MSWIN4.1", 8);
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BootSector.BytesPerSector = DiskGeometry->BytesPerSector;
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BootSector.SectorsPerCluster = ClusterSize / BootSector.BytesPerSector;
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BootSector.ReservedSectors = 32;
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BootSector.FATCount = 2;
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BootSector.RootEntries = 0;
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BootSector.Sectors = 0;
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BootSector.Media = 0xf8;
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BootSector.FATSectors = 0;
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BootSector.SectorsPerTrack = DiskGeometry->SectorsPerTrack;
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BootSector.Heads = DiskGeometry->TracksPerCylinder;
|
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BootSector.HiddenSectors = DiskGeometry->SectorsPerTrack; //PartitionInfo->HiddenSectors; /* FIXME: Hack! */
|
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BootSector.SectorsHuge = PartitionInfo->PartitionLength.QuadPart >>
|
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GetShiftCount(BootSector.BytesPerSector); /* Use shifting to avoid 64-bit division */
|
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BootSector.FATSectors32 = 0; /* Set later */
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BootSector.ExtFlag = 0; /* Mirror all FATs */
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BootSector.FSVersion = 0x0000; /* 0:0 */
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BootSector.RootCluster = 2;
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BootSector.FSInfoSector = 1;
|
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BootSector.BootBackup = 6;
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BootSector.Drive = 0xff; /* No BIOS boot drive available */
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BootSector.ExtBootSignature = 0x29;
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BootSector.VolumeID = 0x45768798; /* FIXME: */
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if ((Label == NULL) || (Label->Buffer == NULL))
|
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{
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memcpy(&BootSector.VolumeLabel[0], "NO NAME ", 11);
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}
|
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else
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{
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RtlUnicodeStringToAnsiString(&VolumeLabel, Label, TRUE);
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memset(&BootSector.VolumeLabel[0], ' ', 11);
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memcpy(&BootSector.VolumeLabel[0], VolumeLabel.Buffer,
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VolumeLabel.Length < 11 ? VolumeLabel.Length : 11);
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RtlFreeAnsiString(&VolumeLabel);
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}
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memcpy(&BootSector.SysType[0], "FAT32 ", 8);
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RootDirSectors = ((BootSector.RootEntries * 32) +
|
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(BootSector.BytesPerSector - 1)) / BootSector.BytesPerSector;
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TmpVal1 = BootSector.SectorsHuge - (BootSector.ReservedSectors + RootDirSectors);
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TmpVal2 = (256 * BootSector.SectorsPerCluster) + BootSector.FATCount;
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if (TRUE /* FAT32 */)
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{
|
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TmpVal2 = 0;
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do
|
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{
|
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if (TmpVal2 == 0)
|
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{
|
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TmpVal3 = 0xffffffff;
|
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}
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||||
else
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||||
{
|
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TmpVal3 = TmpVal2;
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}
|
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TmpVal2 = ((TmpVal1 - TmpVal2 * BootSector.FATCount) / BootSector.SectorsPerCluster) + 2;
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TmpVal2 = (sizeof(ULONG) * TmpVal2 + BootSector.BytesPerSector - 1) / BootSector.BytesPerSector;
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}
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while (TmpVal3 > TmpVal2);
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BootSector.FATSectors32 = TmpVal2;
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}
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|
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Status = Fat32WriteBootSector(FileHandle,
|
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&BootSector);
|
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if (!NT_SUCCESS(Status))
|
||||
{
|
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DPRINT("Fat32WriteBootSector() failed with status 0x%.08x\n", Status);
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return Status;
|
||||
}
|
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|
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Status = Fat32WriteFsInfo(FileHandle,
|
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&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
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DPRINT("Fat32WriteFsInfo() failed with status 0x%.08x\n", Status);
|
||||
return Status;
|
||||
}
|
||||
|
||||
/* Write first FAT copy */
|
||||
Status = Fat32WriteFAT(FileHandle,
|
||||
0,
|
||||
&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("Fat32WriteFAT() failed with status 0x%.08x\n", Status);
|
||||
return Status;
|
||||
}
|
||||
|
||||
/* Write second FAT copy */
|
||||
Status = Fat32WriteFAT(FileHandle,
|
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BootSector.FATSectors32,
|
||||
&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("Fat32WriteFAT() failed with status 0x%.08x.\n", Status);
|
||||
return Status;
|
||||
}
|
||||
|
||||
Status = Fat32WriteRootDirectory(FileHandle,
|
||||
&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("Fat32WriteRootDirectory() failed with status 0x%.08x\n", Status);
|
||||
}
|
||||
|
||||
return Status;
|
||||
}
|
||||
|
|
@ -16,456 +16,8 @@
|
|||
#include "vfatlib.h"
|
||||
|
||||
|
||||
static ULONG
|
||||
GetShiftCount(ULONG Value)
|
||||
{
|
||||
ULONG i = 1;
|
||||
while (Value > 0)
|
||||
{
|
||||
i++;
|
||||
Value /= 2;
|
||||
}
|
||||
return i - 2;
|
||||
}
|
||||
|
||||
|
||||
static NTSTATUS
|
||||
VfatWriteBootSector(IN HANDLE FileHandle,
|
||||
IN PFAT32_BOOT_SECTOR BootSector)
|
||||
{
|
||||
OBJECT_ATTRIBUTES ObjectAttributes;
|
||||
IO_STATUS_BLOCK IoStatusBlock;
|
||||
UNICODE_STRING Name;
|
||||
NTSTATUS Status;
|
||||
PUCHAR NewBootSector;
|
||||
LARGE_INTEGER FileOffset;
|
||||
|
||||
/* Allocate buffer for new bootsector */
|
||||
NewBootSector = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
|
||||
0,
|
||||
SECTORSIZE);
|
||||
if (NewBootSector == NULL)
|
||||
return(STATUS_INSUFFICIENT_RESOURCES);
|
||||
|
||||
/* Zero the new bootsector */
|
||||
memset(NewBootSector, 0, SECTORSIZE);
|
||||
|
||||
/* Copy FAT32 BPB to new bootsector */
|
||||
memcpy((NewBootSector + 3),
|
||||
&BootSector->OEMName[0],
|
||||
87); /* FAT32 BPB length (up to (not including) Res2) */
|
||||
|
||||
/* Write sector 0 */
|
||||
FileOffset.QuadPart = 0ULL;
|
||||
Status = NtWriteFile(FileHandle,
|
||||
NULL,
|
||||
NULL,
|
||||
NULL,
|
||||
&IoStatusBlock,
|
||||
NewBootSector,
|
||||
SECTORSIZE,
|
||||
&FileOffset,
|
||||
NULL);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, NewBootSector);
|
||||
return(Status);
|
||||
}
|
||||
|
||||
/* Write backup boot sector */
|
||||
if (BootSector->BootBackup != 0x0000)
|
||||
{
|
||||
FileOffset.QuadPart = (ULONGLONG)((ULONG) BootSector->BootBackup * SECTORSIZE);
|
||||
Status = NtWriteFile(FileHandle,
|
||||
NULL,
|
||||
NULL,
|
||||
NULL,
|
||||
&IoStatusBlock,
|
||||
NewBootSector,
|
||||
SECTORSIZE,
|
||||
&FileOffset,
|
||||
NULL);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, NewBootSector);
|
||||
return(Status);
|
||||
}
|
||||
}
|
||||
|
||||
/* Free the new boot sector */
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, NewBootSector);
|
||||
|
||||
return(Status);
|
||||
}
|
||||
|
||||
|
||||
static NTSTATUS
|
||||
VfatWriteFsInfo(IN HANDLE FileHandle,
|
||||
IN PFAT32_BOOT_SECTOR BootSector)
|
||||
{
|
||||
OBJECT_ATTRIBUTES ObjectAttributes;
|
||||
IO_STATUS_BLOCK IoStatusBlock;
|
||||
UNICODE_STRING Name;
|
||||
NTSTATUS Status;
|
||||
PFAT32_FSINFO FsInfo;
|
||||
LARGE_INTEGER FileOffset;
|
||||
|
||||
/* Allocate buffer for new sector */
|
||||
FsInfo = (PFAT32_FSINFO)RtlAllocateHeap(RtlGetProcessHeap(),
|
||||
0,
|
||||
BootSector->BytesPerSector);
|
||||
if (FsInfo == NULL)
|
||||
return(STATUS_INSUFFICIENT_RESOURCES);
|
||||
|
||||
/* Zero the new sector */
|
||||
memset(FsInfo, 0, BootSector->BytesPerSector);
|
||||
|
||||
FsInfo->LeadSig = 0x41615252;
|
||||
FsInfo->StrucSig = 0x61417272;
|
||||
FsInfo->FreeCount = 0xffffffff;
|
||||
FsInfo->NextFree = 0xffffffff;
|
||||
FsInfo->TrailSig = 0xaa550000;
|
||||
|
||||
/* Write sector */
|
||||
FileOffset.QuadPart = BootSector->FSInfoSector * BootSector->BytesPerSector;
|
||||
Status = NtWriteFile(FileHandle,
|
||||
NULL,
|
||||
NULL,
|
||||
NULL,
|
||||
&IoStatusBlock,
|
||||
FsInfo,
|
||||
BootSector->BytesPerSector,
|
||||
&FileOffset,
|
||||
NULL);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, FsInfo);
|
||||
return(Status);
|
||||
}
|
||||
|
||||
/* Free the new sector buffer */
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, FsInfo);
|
||||
|
||||
return(Status);
|
||||
}
|
||||
|
||||
|
||||
static NTSTATUS
|
||||
VfatWriteFAT(IN HANDLE FileHandle,
|
||||
ULONG SectorOffset,
|
||||
IN PFAT32_BOOT_SECTOR BootSector)
|
||||
{
|
||||
OBJECT_ATTRIBUTES ObjectAttributes;
|
||||
IO_STATUS_BLOCK IoStatusBlock;
|
||||
UNICODE_STRING Name;
|
||||
NTSTATUS Status;
|
||||
PUCHAR Buffer;
|
||||
LARGE_INTEGER FileOffset;
|
||||
ULONG i;
|
||||
ULONG Size;
|
||||
ULONG Sectors;
|
||||
|
||||
/* Allocate buffer */
|
||||
Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
|
||||
0,
|
||||
64 * 1024);
|
||||
if (Buffer == NULL)
|
||||
return(STATUS_INSUFFICIENT_RESOURCES);
|
||||
|
||||
/* Zero the buffer */
|
||||
memset(Buffer, 0, 64 * 1024);
|
||||
|
||||
/* FAT cluster 0 */
|
||||
Buffer[0] = 0xf8; /* Media type */
|
||||
Buffer[1] = 0xff;
|
||||
Buffer[2] = 0xff;
|
||||
Buffer[3] = 0x0f;
|
||||
/* FAT cluster 1 */
|
||||
Buffer[4] = 0xff; /* Clean shutdown, no disk read/write errors, end-of-cluster (EOC) mark */
|
||||
Buffer[5] = 0xff;
|
||||
Buffer[6] = 0xff;
|
||||
Buffer[7] = 0x0f;
|
||||
/* FAT cluster 2 */
|
||||
Buffer[8] = 0xff; /* End of root directory */
|
||||
Buffer[9] = 0xff;
|
||||
Buffer[10] = 0xff;
|
||||
Buffer[11] = 0x0f;
|
||||
|
||||
/* Write first sector of the FAT */
|
||||
FileOffset.QuadPart = (SectorOffset + BootSector->ReservedSectors) * BootSector->BytesPerSector;
|
||||
Status = NtWriteFile(FileHandle,
|
||||
NULL,
|
||||
NULL,
|
||||
NULL,
|
||||
&IoStatusBlock,
|
||||
Buffer,
|
||||
BootSector->BytesPerSector,
|
||||
&FileOffset,
|
||||
NULL);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
|
||||
return(Status);
|
||||
}
|
||||
|
||||
/* Zero the begin of the buffer */
|
||||
memset(Buffer, 0, 12);
|
||||
|
||||
/* Zero the rest of the FAT */
|
||||
Sectors = 64 * 1024 / BootSector->BytesPerSector;
|
||||
for (i = 1; i < BootSector->FATSectors32; i += Sectors)
|
||||
{
|
||||
/* Zero some sectors of the FAT */
|
||||
FileOffset.QuadPart = (SectorOffset + BootSector->ReservedSectors + i) * BootSector->BytesPerSector;
|
||||
Size = BootSector->FATSectors32 - i;
|
||||
if (Size > Sectors)
|
||||
{
|
||||
Size = Sectors;
|
||||
}
|
||||
Size *= BootSector->BytesPerSector;
|
||||
Status = NtWriteFile(FileHandle,
|
||||
NULL,
|
||||
NULL,
|
||||
NULL,
|
||||
&IoStatusBlock,
|
||||
Buffer,
|
||||
Size,
|
||||
&FileOffset,
|
||||
NULL);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
|
||||
return(Status);
|
||||
}
|
||||
}
|
||||
|
||||
/* Free the buffer */
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
|
||||
|
||||
return(Status);
|
||||
}
|
||||
|
||||
|
||||
static NTSTATUS
|
||||
VfatWriteRootDirectory(IN HANDLE FileHandle,
|
||||
IN PFAT32_BOOT_SECTOR BootSector)
|
||||
{
|
||||
OBJECT_ATTRIBUTES ObjectAttributes;
|
||||
IO_STATUS_BLOCK IoStatusBlock;
|
||||
NTSTATUS Status;
|
||||
PUCHAR Buffer;
|
||||
LARGE_INTEGER FileOffset;
|
||||
ULONGLONG FirstDataSector;
|
||||
ULONGLONG FirstRootDirSector;
|
||||
|
||||
/* Allocate buffer for the cluster */
|
||||
Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
|
||||
0,
|
||||
BootSector->SectorsPerCluster * BootSector->BytesPerSector);
|
||||
if (Buffer == NULL)
|
||||
return(STATUS_INSUFFICIENT_RESOURCES);
|
||||
|
||||
/* Zero the buffer */
|
||||
memset(Buffer, 0, BootSector->SectorsPerCluster * BootSector->BytesPerSector);
|
||||
|
||||
DPRINT("BootSector->ReservedSectors = %lu\n", BootSector->ReservedSectors);
|
||||
DPRINT("BootSector->FATSectors32 = %lu\n", BootSector->FATSectors32);
|
||||
DPRINT("BootSector->RootCluster = %lu\n", BootSector->RootCluster);
|
||||
DPRINT("BootSector->SectorsPerCluster = %lu\n", BootSector->SectorsPerCluster);
|
||||
|
||||
/* Write cluster */
|
||||
FirstDataSector = BootSector->ReservedSectors +
|
||||
(BootSector->FATCount * BootSector->FATSectors32) + 0 /* RootDirSectors */;
|
||||
|
||||
DPRINT("FirstDataSector = %lu\n", FirstDataSector);
|
||||
|
||||
FirstRootDirSector = ((BootSector->RootCluster - 2) * BootSector->SectorsPerCluster) + FirstDataSector;
|
||||
FileOffset.QuadPart = FirstRootDirSector * BootSector->BytesPerSector;
|
||||
|
||||
DPRINT("FirstRootDirSector = %lu\n", FirstRootDirSector);
|
||||
DPRINT("FileOffset = %lu\n", FileOffset.QuadPart);
|
||||
|
||||
Status = NtWriteFile(FileHandle,
|
||||
NULL,
|
||||
NULL,
|
||||
NULL,
|
||||
&IoStatusBlock,
|
||||
Buffer,
|
||||
BootSector->SectorsPerCluster * BootSector->BytesPerSector,
|
||||
&FileOffset,
|
||||
NULL);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
|
||||
return(Status);
|
||||
}
|
||||
|
||||
/* Free the buffer */
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
|
||||
|
||||
return(Status);
|
||||
}
|
||||
|
||||
|
||||
static NTSTATUS
|
||||
VfatFormatFat32 (HANDLE FileHandle,
|
||||
PPARTITION_INFORMATION PartitionInfo,
|
||||
PDISK_GEOMETRY DiskGeometry,
|
||||
PUNICODE_STRING Label,
|
||||
BOOL QuickFormat,
|
||||
DWORD ClusterSize,
|
||||
PFMIFSCALLBACK Callback)
|
||||
{
|
||||
FAT32_BOOT_SECTOR BootSector;
|
||||
ANSI_STRING VolumeLabel;
|
||||
ULONG RootDirSectors;
|
||||
ULONG TmpVal1;
|
||||
ULONG TmpVal2;
|
||||
ULONG TmpVal3;
|
||||
NTSTATUS Status;
|
||||
|
||||
/* Calculate cluster size */
|
||||
if (ClusterSize == 0)
|
||||
{
|
||||
if (PartitionInfo->PartitionLength.QuadPart < 8ULL * 1024ULL * 1024ULL * 1024ULL)
|
||||
{
|
||||
/* Partition < 8GB ==> 4KB Cluster */
|
||||
ClusterSize = 4096;
|
||||
}
|
||||
else if (PartitionInfo->PartitionLength.QuadPart < 16ULL * 1024ULL * 1024ULL * 1024ULL)
|
||||
{
|
||||
/* Partition 8GB - 16GB ==> 8KB Cluster */
|
||||
ClusterSize = 8192;
|
||||
}
|
||||
else if (PartitionInfo->PartitionLength.QuadPart < 32ULL * 1024ULL * 1024ULL * 1024ULL)
|
||||
{
|
||||
/* Partition 16GB - 32GB ==> 16KB Cluster */
|
||||
ClusterSize = 16384;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Partition >= 32GB ==> 32KB Cluster */
|
||||
ClusterSize = 32768;
|
||||
}
|
||||
}
|
||||
|
||||
memset(&BootSector, 0, sizeof(FAT32_BOOT_SECTOR));
|
||||
memcpy(&BootSector.OEMName[0], "MSWIN4.1", 8);
|
||||
BootSector.BytesPerSector = DiskGeometry->BytesPerSector;
|
||||
BootSector.SectorsPerCluster = ClusterSize / BootSector.BytesPerSector;
|
||||
BootSector.ReservedSectors = 32;
|
||||
BootSector.FATCount = 2;
|
||||
BootSector.RootEntries = 0;
|
||||
BootSector.Sectors = 0;
|
||||
BootSector.Media = 0xf8;
|
||||
BootSector.FATSectors = 0;
|
||||
BootSector.SectorsPerTrack = DiskGeometry->SectorsPerTrack;
|
||||
BootSector.Heads = DiskGeometry->TracksPerCylinder;
|
||||
BootSector.HiddenSectors = PartitionInfo->HiddenSectors;
|
||||
BootSector.SectorsHuge = PartitionInfo->PartitionLength.QuadPart >>
|
||||
GetShiftCount(BootSector.BytesPerSector); /* Use shifting to avoid 64-bit division */
|
||||
BootSector.FATSectors32 = 0; /* Set later */
|
||||
BootSector.ExtFlag = 0; /* Mirror all FATs */
|
||||
BootSector.FSVersion = 0x0000; /* 0:0 */
|
||||
BootSector.RootCluster = 2;
|
||||
BootSector.FSInfoSector = 1;
|
||||
BootSector.BootBackup = 6;
|
||||
BootSector.Drive = 0xff; /* No BIOS boot drive available */
|
||||
BootSector.ExtBootSignature = 0x29;
|
||||
BootSector.VolumeID = 0x45768798; /* FIXME: */
|
||||
if ((Label == NULL) || (Label->Buffer == NULL))
|
||||
{
|
||||
memcpy(&BootSector.VolumeLabel[0], "NO NAME ", 11);
|
||||
}
|
||||
else
|
||||
{
|
||||
RtlUnicodeStringToAnsiString(&VolumeLabel, Label, TRUE);
|
||||
memset(&BootSector.VolumeLabel[0], ' ', 11);
|
||||
memcpy(&BootSector.VolumeLabel[0], VolumeLabel.Buffer,
|
||||
VolumeLabel.Length < 11 ? VolumeLabel.Length : 11);
|
||||
RtlFreeAnsiString(&VolumeLabel);
|
||||
}
|
||||
memcpy(&BootSector.SysType[0], "FAT32 ", 8);
|
||||
|
||||
RootDirSectors = ((BootSector.RootEntries * 32) +
|
||||
(BootSector.BytesPerSector - 1)) / BootSector.BytesPerSector;
|
||||
TmpVal1 = BootSector.SectorsHuge - (BootSector.ReservedSectors + RootDirSectors);
|
||||
TmpVal2 = (256 * BootSector.SectorsPerCluster) + BootSector.FATCount;
|
||||
if (TRUE /* FAT32 */)
|
||||
{
|
||||
TmpVal2 = 0;
|
||||
do
|
||||
{
|
||||
if (TmpVal2 == 0)
|
||||
{
|
||||
TmpVal3 = 0xffffffff;
|
||||
}
|
||||
else
|
||||
{
|
||||
TmpVal3 = TmpVal2;
|
||||
}
|
||||
TmpVal2 = ((TmpVal1 - TmpVal2 * BootSector.FATCount) / BootSector.SectorsPerCluster) + 2;
|
||||
TmpVal2 = (sizeof(ULONG) * TmpVal2 + BootSector.BytesPerSector - 1) / BootSector.BytesPerSector;
|
||||
}
|
||||
while (TmpVal3 > TmpVal2);
|
||||
BootSector.FATSectors32 = TmpVal2;
|
||||
}
|
||||
|
||||
Status = VfatWriteBootSector(FileHandle,
|
||||
&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("VfatWriteBootSector() failed with status 0x%.08x\n", Status);
|
||||
return Status;
|
||||
}
|
||||
|
||||
Status = VfatWriteFsInfo(FileHandle,
|
||||
&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("VfatWriteFsInfo() failed with status 0x%.08x\n", Status);
|
||||
return Status;
|
||||
}
|
||||
|
||||
/* Write first FAT copy */
|
||||
Status = VfatWriteFAT(FileHandle,
|
||||
0,
|
||||
&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("VfatWriteFAT() failed with status 0x%.08x\n", Status);
|
||||
return Status;
|
||||
}
|
||||
|
||||
/* Write second FAT copy */
|
||||
Status = VfatWriteFAT(FileHandle,
|
||||
BootSector.FATSectors32,
|
||||
&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("VfatWriteFAT() failed with status 0x%.08x.\n", Status);
|
||||
return Status;
|
||||
}
|
||||
|
||||
Status = VfatWriteRootDirectory(FileHandle,
|
||||
&BootSector);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("VfatWriteRootDirectory() failed with status 0x%.08x\n", Status);
|
||||
}
|
||||
|
||||
return Status;
|
||||
}
|
||||
|
||||
|
||||
NTSTATUS
|
||||
VfatInitialize()
|
||||
VfatInitialize(VOID)
|
||||
{
|
||||
DPRINT("VfatInitialize()\n");
|
||||
|
||||
|
|
@ -556,41 +108,55 @@ VfatFormat(
|
|||
return Status;
|
||||
}
|
||||
|
||||
DPRINT("PartitionType 0x%x\n", PartitionInfo.PartitionType);
|
||||
DPRINT("StartingOffset %I64d\n", PartitionInfo.StartingOffset);
|
||||
DPRINT("PartitionLength %I64d\n", PartitionInfo.PartitionLength);
|
||||
DPRINT("HiddenSectors %d\n", PartitionInfo.HiddenSectors);
|
||||
DPRINT("PartitionNumber %d\n", PartitionInfo.PartitionNumber);
|
||||
DPRINT("BootIndicator 0x%x\n", PartitionInfo.BootIndicator);
|
||||
DPRINT("RewritePartition %d\n", PartitionInfo.RewritePartition);
|
||||
DPRINT("RecognizedPartition %d\n", PartitionInfo.RecognizedPartition);
|
||||
}
|
||||
else
|
||||
{
|
||||
DPRINT1("FIXME: Removable media is not supported\n");
|
||||
NtClose(FileHandle);
|
||||
return Status;
|
||||
}
|
||||
DPRINT("PartitionType 0x%x\n", PartitionInfo.PartitionType);
|
||||
DPRINT("StartingOffset %I64d\n", PartitionInfo.StartingOffset);
|
||||
DPRINT("PartitionLength %I64d\n", PartitionInfo.PartitionLength);
|
||||
DPRINT("HiddenSectors %d\n", PartitionInfo.HiddenSectors);
|
||||
DPRINT("PartitionNumber %d\n", PartitionInfo.PartitionNumber);
|
||||
DPRINT("BootIndicator 0x%x\n", PartitionInfo.BootIndicator);
|
||||
DPRINT("RewritePartition %d\n", PartitionInfo.RewritePartition);
|
||||
DPRINT("RecognizedPartition %d\n", PartitionInfo.RecognizedPartition);
|
||||
|
||||
if (PartitionInfo.PartitionLength.QuadPart < 512ULL * 1024ULL * 1024ULL)
|
||||
{
|
||||
Status = Fat16Format (FileHandle,
|
||||
&PartitionInfo,
|
||||
&DiskGeometry,
|
||||
Label,
|
||||
QuickFormat,
|
||||
ClusterSize,
|
||||
Callback);
|
||||
}
|
||||
else
|
||||
{
|
||||
Status = VfatFormatFat32 (FileHandle,
|
||||
|
||||
if (PartitionInfo.PartitionType == PARTITION_FAT32_XINT13 ||
|
||||
PartitionInfo.PartitionType == PARTITION_FAT32)
|
||||
{
|
||||
Status = Fat32Format (FileHandle,
|
||||
&PartitionInfo,
|
||||
&DiskGeometry,
|
||||
Label,
|
||||
QuickFormat,
|
||||
ClusterSize,
|
||||
Callback);
|
||||
}
|
||||
#if 0
|
||||
else if (PartitionInfo.PartitionType == PARTITION_FAT12)
|
||||
{
|
||||
Status = Fat12Format (FileHandle,
|
||||
&PartitionInfo,
|
||||
&DiskGeometry,
|
||||
Label,
|
||||
QuickFormat,
|
||||
ClusterSize,
|
||||
Callback);
|
||||
}
|
||||
#endif
|
||||
else
|
||||
{
|
||||
Status = Fat16Format (FileHandle,
|
||||
&PartitionInfo,
|
||||
&DiskGeometry,
|
||||
Label,
|
||||
QuickFormat,
|
||||
ClusterSize,
|
||||
Callback);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
DPRINT1("FIXME: Removable media is not supported\n");
|
||||
NtClose(FileHandle);
|
||||
return STATUS_UNSUCCESSFUL;
|
||||
}
|
||||
|
||||
NtClose(FileHandle);
|
||||
|
|
@ -602,7 +168,7 @@ VfatFormat(
|
|||
|
||||
|
||||
NTSTATUS
|
||||
VfatCleanup()
|
||||
VfatCleanup(VOID)
|
||||
{
|
||||
DPRINT("VfatCleanup()\n");
|
||||
|
||||
|
|
|
|||
|
|
@ -95,3 +95,12 @@ Fat16Format (HANDLE FileHandle,
|
|||
BOOL QuickFormat,
|
||||
DWORD ClusterSize,
|
||||
PFMIFSCALLBACK Callback);
|
||||
|
||||
NTSTATUS
|
||||
Fat32Format (HANDLE FileHandle,
|
||||
PPARTITION_INFORMATION PartitionInfo,
|
||||
PDISK_GEOMETRY DiskGeometry,
|
||||
PUNICODE_STRING Label,
|
||||
BOOL QuickFormat,
|
||||
DWORD ClusterSize,
|
||||
PFMIFSCALLBACK Callback);
|
||||
|
|
|
|||
Loading…
Reference in a new issue