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[VFATLIB]

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Add full format (wipe) support to the fat32 code.

svn path=/trunk/; revision=63693
This commit is contained in:
Eric Kohl 2014-07-06 13:12:28 +00:00
parent 8baf5990ef
commit e6a306946d
1 changed files with 96 additions and 6 deletions
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102
reactos/lib/fslib/vfatlib/fat32.c
View file

@ -346,6 +346,87 @@ Fat32WriteRootDirectory(IN HANDLE FileHandle,
}
static
NTSTATUS
Fat32WipeSectors(
IN HANDLE FileHandle,
IN PFAT32_BOOT_SECTOR BootSector,
IN OUT PFORMAT_CONTEXT Context)
{
IO_STATUS_BLOCK IoStatusBlock;
PUCHAR Buffer;
LARGE_INTEGER FileOffset;
ULONGLONG Sector;
ULONG Length;
NTSTATUS Status;
/* Allocate buffer for the cluster */
Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
BootSector->SectorsPerCluster * BootSector->BytesPerSector);
if (Buffer == NULL)
return STATUS_INSUFFICIENT_RESOURCES;
Sector = 0;
Length = BootSector->SectorsPerCluster * BootSector->BytesPerSector;
while (Sector + BootSector->SectorsPerCluster < BootSector->SectorsHuge)
{
FileOffset.QuadPart = Sector * BootSector->BytesPerSector;
Status = NtWriteFile(FileHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
Buffer,
Length,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
goto done;
}
UpdateProgress(Context, (ULONG)BootSector->SectorsPerCluster);
Sector += BootSector->SectorsPerCluster;
}
if (Sector + BootSector->SectorsPerCluster > BootSector->SectorsHuge)
{
DPRINT("Remaining sectors %lu\n", BootSector->SectorsHuge - Sector);
FileOffset.QuadPart = Sector * BootSector->BytesPerSector;
Length = (BootSector->SectorsHuge - Sector) * BootSector->BytesPerSector;
Status = NtWriteFile(FileHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
Buffer,
Length,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
goto done;
}
UpdateProgress(Context, BootSector->SectorsHuge - Sector);
}
done:
/* Free the buffer */
RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
return Status;
}
NTSTATUS
Fat32Format(IN HANDLE FileHandle,
IN PPARTITION_INFORMATION PartitionInfo,
@ -407,7 +488,7 @@ Fat32Format(IN HANDLE FileHandle,
BootSector.RootCluster = 2;
BootSector.FSInfoSector = 1;
BootSector.BootBackup = 6;
BootSector.Drive = DiskGeometry->MediaType == FixedMedia ? 0x80 : 0x00;
BootSector.Drive = (DiskGeometry->MediaType == FixedMedia) ? 0x80 : 0x00;
BootSector.ExtBootSignature = 0x29;
BootSector.VolumeID = CalcVolumeSerialNumber ();
if ((Label == NULL) || (Label->Buffer == NULL))
@ -436,6 +517,20 @@ Fat32Format(IN HANDLE FileHandle,
Context->TotalSectorCount =
2 + (BootSector.FATSectors32 * BootSector.FATCount) + BootSector.SectorsPerCluster;
if (!QuickFormat)
{
Context->TotalSectorCount += BootSector.SectorsHuge;
Status = Fat32WipeSectors(FileHandle,
&BootSector,
Context);
if (!NT_SUCCESS(Status))
{
DPRINT("Fat32WipeSectors() failed with status 0x%.08x\n", Status);
return Status;
}
}
Status = Fat32WriteBootSector(FileHandle,
&BootSector,
Context);
@ -484,11 +579,6 @@ Fat32Format(IN HANDLE FileHandle,
DPRINT("Fat32WriteRootDirectory() failed with status 0x%.08x\n", Status);
}
if (!QuickFormat)
{
/* FIXME: Fill remaining sectors */
}
return Status;
}