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Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

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This commit is contained in:
Colin Finck 2017-10-03 07:45:34 +00:00
parent b94e2d8ca0
commit c2c66aff7d
24198 changed files with 0 additions and 37285 deletions
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137
sdk/lib/fslib/vfatlib/common.c Normal file
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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS VFAT filesystem library
* FILE: lib\fslib\vfatlib\common.c
* PURPOSE: Common code for Fat support
* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
* Eric Kohl
* Hermes Belusca-Maito (hermes.belusca@sfr.fr)
*/
/* INCLUDES *******************************************************************/
#include "vfatlib.h"
#define NDEBUG
#include <debug.h>
/* FUNCTIONS ******************************************************************/
ULONG
GetShiftCount(IN ULONG Value)
{
ULONG i = 1;
while (Value > 0)
{
i++;
Value /= 2;
}
return i - 2;
}
ULONG
CalcVolumeSerialNumber(VOID)
{
LARGE_INTEGER SystemTime;
TIME_FIELDS TimeFields;
ULONG Serial;
PUCHAR Buffer;
NtQuerySystemTime(&SystemTime);
RtlTimeToTimeFields(&SystemTime, &TimeFields);
Buffer = (PUCHAR)&Serial;
Buffer[0] = (UCHAR)(TimeFields.Year & 0xFF) + (UCHAR)(TimeFields.Hour & 0xFF);
Buffer[1] = (UCHAR)(TimeFields.Year >> 8) + (UCHAR)(TimeFields.Minute & 0xFF);
Buffer[2] = (UCHAR)(TimeFields.Month & 0xFF) + (UCHAR)(TimeFields.Second & 0xFF);
Buffer[3] = (UCHAR)(TimeFields.Day & 0xFF) + (UCHAR)(TimeFields.Milliseconds & 0xFF);
return Serial;
}
/***** Wipe function for FAT12, FAT16 and FAT32 formats *****/
NTSTATUS
FatWipeSectors(
IN HANDLE FileHandle,
IN ULONG TotalSectors,
IN ULONG SectorsPerCluster,
IN ULONG BytesPerSector,
IN OUT PFORMAT_CONTEXT Context)
{
IO_STATUS_BLOCK IoStatusBlock;
PUCHAR Buffer;
LARGE_INTEGER FileOffset;
ULONGLONG Sector;
ULONG Length;
NTSTATUS Status;
Length = SectorsPerCluster * BytesPerSector;
/* Allocate buffer for the cluster */
Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
Length);
if (Buffer == NULL)
return STATUS_INSUFFICIENT_RESOURCES;
/* Wipe all clusters */
Sector = 0;
while (Sector + SectorsPerCluster < TotalSectors)
{
FileOffset.QuadPart = Sector * 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, SectorsPerCluster);
Sector += SectorsPerCluster;
}
/* Wipe the trailing space behind the last cluster */
if (Sector < TotalSectors)
{
DPRINT("Remaining sectors %lu\n", TotalSectors - Sector);
FileOffset.QuadPart = Sector * BytesPerSector;
Length = (TotalSectors - Sector) * 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, TotalSectors - Sector);
}
done:
/* Free the buffer */
RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
return Status;
}
/* EOF */