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[DISKPART] Add dump command to dump a sector of a disk or partition

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Select a disk and run "dump disk 0" to dump the MBR of the disk.
This commit is contained in:
Eric Kohl 2022-03-13 14:20:47 +01:00
parent 28d565ae9a
commit a2aaa28436
1 changed files with 278 additions and 0 deletions
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278
base/system/diskpart/dump.c Normal file
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/*
* PROJECT: ReactOS DiskPart
* LICENSE: GPL - See COPYING in the top level directory
* FILE: base/system/diskpart/dump.c
* PURPOSE: Manages all the partitions of the OS in an interactive way.
* PROGRAMMERS: Eric Kohl
*/
#include "diskpart.h"
#define NDEBUG
#include <debug.h>
/* FUNCTIONS ******************************************************************/
static
VOID
HexDump(
_In_ UCHAR *addr,
_In_ int len)
{
WCHAR Buffer[17];
UCHAR *pc;
int i;
Buffer[16] = L'\0';
pc = addr;
for (i = 0; i < len; i++)
{
if ((i % 16) == 0)
ConPrintf(StdOut, L" %04x ", i);
ConPrintf(StdOut, L" %02x", pc[i]);
if ((pc[i] < 0x20) || (pc[i] > 0x7e))
Buffer[i % 16] = L'.';
else
Buffer[i % 16] = (WCHAR)(USHORT)pc[i];
if ((i % 16) == (16 - 1))
ConPrintf(StdOut, L" %s\n", Buffer);
}
}
static
VOID
DumpDisk(
_In_ INT argc,
_In_ LPWSTR *argv)
{
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK Iosb;
NTSTATUS Status;
WCHAR Buffer[MAX_PATH];
UNICODE_STRING Name;
HANDLE FileHandle = NULL;
PUCHAR pSectorBuffer = NULL;
LARGE_INTEGER FileOffset;
LONGLONG Sector;
LPWSTR endptr = NULL;
#if 0
if (argc == 2)
{
ConResPuts(StdOut, IDS_HELP_CMD_DUMP_DISK);
return TRUE;
}
#endif
if (CurrentDisk == NULL)
{
ConResPuts(StdOut, IDS_SELECT_NO_DISK);
return;
}
Sector = _wcstoi64(argv[2], &endptr, 0);
if (((Sector == 0) && (endptr == argv[2])) ||
(Sector < 0))
{
ConResPuts(StdErr, IDS_ERROR_INVALID_ARGS);
return;
}
pSectorBuffer = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, CurrentDisk->BytesPerSector);
if (pSectorBuffer == NULL)
{
DPRINT1("\n");
/* Error message */
goto done;
}
swprintf(Buffer,
L"\\Device\\Harddisk%d\\Partition0",
CurrentDisk->DiskNumber);
RtlInitUnicodeString(&Name,
Buffer);
InitializeObjectAttributes(&ObjectAttributes,
&Name,
0,
NULL,
NULL);
Status = NtOpenFile(&FileHandle,
FILE_READ_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE,
&ObjectAttributes,
&Iosb,
FILE_SHARE_READ,
FILE_SYNCHRONOUS_IO_NONALERT);
if (!NT_SUCCESS(Status))
{
DPRINT1("\n");
goto done;
}
FileOffset.QuadPart = Sector * CurrentDisk->BytesPerSector;
Status = NtReadFile(FileHandle,
NULL,
NULL,
NULL,
&Iosb,
(PVOID)pSectorBuffer,
CurrentDisk->BytesPerSector,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtReadFile failed, status=%x\n", Status);
goto done;
}
HexDump(pSectorBuffer, CurrentDisk->BytesPerSector);
done:
if (FileHandle)
NtClose(FileHandle);
RtlFreeHeap(RtlGetProcessHeap(), 0, pSectorBuffer);
return;
}
static
VOID
DumpPartition(
_In_ INT argc,
_In_ LPWSTR *argv)
{
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK Iosb;
NTSTATUS Status;
WCHAR Buffer[MAX_PATH];
UNICODE_STRING Name;
HANDLE FileHandle = NULL;
PUCHAR pSectorBuffer = NULL;
LARGE_INTEGER FileOffset;
LONGLONG Sector;
LPWSTR endptr = NULL;
#if 0
if (argc == 2)
{
ConResPuts(StdOut, IDS_HELP_CMD_DUMP_DISK);
return TRUE;
}
#endif
if (CurrentDisk == NULL)
{
ConResPuts(StdOut, IDS_SELECT_NO_DISK);
return;
}
if (CurrentPartition == NULL)
{
ConResPuts(StdOut, IDS_SELECT_NO_PARTITION);
return;
}
Sector = _wcstoi64(argv[2], &endptr, 0);
if (((Sector == 0) && (endptr == argv[2])) ||
(Sector < 0))
{
ConResPuts(StdErr, IDS_ERROR_INVALID_ARGS);
return;
}
pSectorBuffer = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, CurrentDisk->BytesPerSector);
if (pSectorBuffer == NULL)
{
DPRINT1("\n");
/* Error message */
goto done;
}
swprintf(Buffer,
L"\\Device\\Harddisk%d\\Partition%d",
CurrentDisk->DiskNumber,
CurrentPartition->PartitionNumber);
RtlInitUnicodeString(&Name,
Buffer);
InitializeObjectAttributes(&ObjectAttributes,
&Name,
0,
NULL,
NULL);
Status = NtOpenFile(&FileHandle,
FILE_READ_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE,
&ObjectAttributes,
&Iosb,
FILE_SHARE_READ,
FILE_SYNCHRONOUS_IO_NONALERT);
if (!NT_SUCCESS(Status))
{
DPRINT1("\n");
goto done;
}
FileOffset.QuadPart = Sector * CurrentDisk->BytesPerSector;
Status = NtReadFile(FileHandle,
NULL,
NULL,
NULL,
&Iosb,
(PVOID)pSectorBuffer,
CurrentDisk->BytesPerSector,
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtReadFile failed, status=%x\n", Status);
goto done;
}
HexDump(pSectorBuffer, CurrentDisk->BytesPerSector);
done:
if (FileHandle)
NtClose(FileHandle);
RtlFreeHeap(RtlGetProcessHeap(), 0, pSectorBuffer);
return;
}
BOOL
dump_main(
_In_ INT argc,
_In_ LPWSTR *argv)
{
/* gets the first word from the string */
#if 0
if (argc == 1)
{
ConResPuts(StdOut, IDS_HELP_CMD_LIST);
return TRUE;
}
#endif
/* determines which to list (disk, partition, etc.) */
if (!wcsicmp(argv[1], L"disk"))
DumpDisk(argc, argv);
else if (!wcsicmp(argv[1], L"partition"))
DumpPartition(argc, argv);
#if 0
else
ConResPuts(StdOut, IDS_HELP_CMD_LIST);
#endif
return TRUE;
}