[mirror_edk2.git] / ShellPkg / Library / UefiShellDebug1CommandsLib / HexEdit / DiskImage.c

/** @file\r
  Functions to deal with Disk buffer.\r
\r
  Copyright (c) 2005 - 2011, Intel Corporation. All rights reserved. <BR>\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include "HexEditor.h"\r
#include <Protocol/BlockIo.h>\r
\r
extern EFI_HANDLE                 HImageHandleBackup;\r
extern HEFI_EDITOR_BUFFER_IMAGE   HBufferImage;\r
\r
extern BOOLEAN                    HBufferImageNeedRefresh;\r
extern BOOLEAN                    HBufferImageOnlyLineNeedRefresh;\r
extern BOOLEAN                    HBufferImageMouseNeedRefresh;\r
\r
extern HEFI_EDITOR_GLOBAL_EDITOR  HMainEditor;\r
\r
HEFI_EDITOR_DISK_IMAGE            HDiskImage;\r
HEFI_EDITOR_DISK_IMAGE            HDiskImageBackupVar;\r
\r
//\r
// for basic initialization of HDiskImage\r
//\r
HEFI_EDITOR_DISK_IMAGE            HDiskImageConst = {\r
  NULL,\r
  0,\r
  0,\r
  0\r
};\r
\r
/**\r
  Initialization function for HDiskImage.\r
 \r
  @retval EFI_SUCCESS     The operation was successful.\r
  @retval EFI_LOAD_ERROR  A load error occured.\r
**/\r
EFI_STATUS\r
HDiskImageInit (\r
  VOID\r
  )\r
{\r
  //\r
  // basically initialize the HDiskImage\r
  //\r
  CopyMem (&HDiskImage, &HDiskImageConst, sizeof (HDiskImage));\r
\r
  CopyMem (&HDiskImageBackupVar, &HDiskImageConst, sizeof (HDiskImageBackupVar));\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Backup function for HDiskImage. Only a few fields need to be backup.   \r
  This is for making the Disk buffer refresh as few as possible.\r
\r
  @retval EFI_SUCCESS           The operation was successful.\r
  @retval EFI_OUT_OF_RESOURCES  gST->ConOut of resources.\r
**/\r
EFI_STATUS\r
HDiskImageBackup (\r
  VOID\r
  )\r
{\r
  //\r
  // backup the disk name, offset and size\r
  //\r
  //\r
  SHELL_FREE_NON_NULL (HDiskImageBackupVar.Name);\r
\r
  HDiskImageBackupVar.Name = CatSPrint(NULL, L"%s", HDiskImage.Name);\r
  if (HDiskImageBackupVar.Name == NULL) {\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
\r
  HDiskImageBackupVar.Offset  = HDiskImage.Offset;\r
  HDiskImageBackupVar.Size    = HDiskImage.Size;\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Cleanup function for HDiskImage.\r
\r
  @retval EFI_SUCCESS           The operation was successful.\r
**/\r
EFI_STATUS\r
HDiskImageCleanup (\r
  VOID\r
  )\r
{\r
  SHELL_FREE_NON_NULL (HDiskImage.Name);\r
  SHELL_FREE_NON_NULL (HDiskImageBackupVar.Name);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Set FileName field in HFileImage.\r
\r
  @param[in] Str      File name to set.\r
  @param[in] Offset   The offset.\r
  @param[in] Size     The size.\r
\r
  @retval EFI_SUCCESS           The operation was successful.\r
  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.\r
**/\r
EFI_STATUS\r
EFIAPI\r
HDiskImageSetDiskNameOffsetSize (\r
  IN CONST CHAR16   *Str,\r
  IN UINTN    Offset,\r
  IN UINTN    Size\r
  )\r
{\r
  UINTN Len;\r
  UINTN Index;\r
\r
  //\r
  // free the old file name\r
  //\r
  SHELL_FREE_NON_NULL (HDiskImage.Name);\r
\r
  Len             = StrLen (Str);\r
\r
  HDiskImage.Name = AllocateZeroPool (2 * (Len + 1));\r
  if (HDiskImage.Name == NULL) {\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
\r
  for (Index = 0; Index < Len; Index++) {\r
    HDiskImage.Name[Index] = Str[Index];\r
  }\r
\r
  HDiskImage.Name[Len]  = L'\0';\r
\r
  HDiskImage.Offset     = Offset;\r
  HDiskImage.Size       = Size;\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Read a disk from disk into HBufferImage.\r
\r
  @param[in] DeviceName   filename to read.\r
  @param[in] Offset       The offset.\r
  @param[in] Size         The size.\r
  @param[in] Recover      if is for recover, no information print.\r
\r
  @retval EFI_SUCCESS           The operation was successful.\r
  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.\r
  @retval EFI_LOAD_ERROR        A load error occured.\r
  @retval EFI_INVALID_PARAMETER A parameter was invalid.  \r
**/\r
EFI_STATUS\r
HDiskImageRead (\r
  IN CONST CHAR16   *DeviceName,\r
  IN UINTN    Offset,\r
  IN UINTN    Size,\r
  IN BOOLEAN  Recover\r
  )\r
{\r
  CONST EFI_DEVICE_PATH_PROTOCOL  *DevicePath;\r
  EFI_DEVICE_PATH_PROTOCOL        *DupDevicePath;\r
  EFI_DEVICE_PATH_PROTOCOL        *DupDevicePathForFree;\r
  EFI_HANDLE                      Handle;\r
  EFI_BLOCK_IO_PROTOCOL           *BlkIo;\r
  EFI_STATUS                      Status;\r
\r
  VOID                            *Buffer;\r
  CHAR16                          *Str;\r
  UINTN                           Bytes;\r
\r
  HEFI_EDITOR_LINE                *Line;\r
  UINT64                          ByteOffset;\r
\r
  EDIT_FILE_TYPE                  BufferTypeBackup;\r
\r
  BufferTypeBackup        = HBufferImage.BufferType;\r
  HBufferImage.BufferType = FileTypeDiskBuffer;\r
\r
  DevicePath              = gEfiShellProtocol->GetDevicePathFromMap(DeviceName);\r
  if (DevicePath == NULL) {\r
    StatusBarSetStatusString (L"Cannot Find Device");\r
    return EFI_INVALID_PARAMETER;\r
  }\r
  DupDevicePath = DuplicateDevicePath(DevicePath);\r
  DupDevicePathForFree = DupDevicePath;\r
  //\r
  // get blkio interface\r
  //\r
  Status = gBS->LocateDevicePath(&gEfiBlockIoProtocolGuid,&DupDevicePath,&Handle);\r
  FreePool(DupDevicePathForFree);\r
  if (EFI_ERROR (Status)) {\r
    StatusBarSetStatusString (L"Read Disk Failed");\r
    return Status;\r
  }\r
  Status = gBS->OpenProtocol(Handle, &gEfiBlockIoProtocolGuid, (VOID**)&BlkIo, gImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);\r
  if (EFI_ERROR (Status)) {\r
    StatusBarSetStatusString (L"Read Disk Failed");\r
    return Status;\r
  }\r
  //\r
  // if Offset exceeds LastBlock,\r
  //   return error\r
  //\r
  if (Offset > BlkIo->Media->LastBlock || Offset + Size > BlkIo->Media->LastBlock) {\r
    StatusBarSetStatusString (L"Invalid Offset + Size");\r
    return EFI_LOAD_ERROR;\r
  }\r
\r
  Bytes   = BlkIo->Media->BlockSize * Size;\r
  Buffer  = AllocateZeroPool (Bytes);\r
\r
  if (Buffer == NULL) {\r
    StatusBarSetStatusString (L"Read Disk Failed");\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
\r
  ByteOffset = MultU64x32 (Offset, BlkIo->Media->BlockSize);\r
\r
  //\r
  // read from disk\r
  //\r
  Status = BlkIo->ReadBlocks (\r
                    BlkIo,\r
                    BlkIo->Media->MediaId,\r
                    Offset,\r
                    Bytes,\r
                    Buffer\r
                    );\r
\r
  if (EFI_ERROR (Status)) {\r
    FreePool (Buffer);\r
    StatusBarSetStatusString (L"Read Disk Failed");\r
    return EFI_LOAD_ERROR;\r
  }\r
\r
  HBufferImageFree ();\r
\r
  //\r
  // convert buffer to line list\r
  //\r
  Status = HBufferImageBufferToList (Buffer, Bytes);\r
  FreePool (Buffer);\r
\r
  if (EFI_ERROR (Status)) {\r
    StatusBarSetStatusString (L"Read Disk Failed");\r
    return Status;\r
  }\r
\r
  Status = HDiskImageSetDiskNameOffsetSize (DeviceName, Offset, Size);\r
  if (EFI_ERROR (Status)) {\r
    StatusBarSetStatusString (L"Read Disk Failed");\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
  //\r
  // initialize some variables\r
  //\r
  HDiskImage.BlockSize                = BlkIo->Media->BlockSize;\r
\r
  HBufferImage.DisplayPosition.Row    = 2;\r
  HBufferImage.DisplayPosition.Column = 10;\r
\r
  HBufferImage.MousePosition.Row      = 2;\r
  HBufferImage.MousePosition.Column   = 10;\r
\r
  HBufferImage.LowVisibleRow          = 1;\r
  HBufferImage.HighBits               = TRUE;\r
\r
  HBufferImage.BufferPosition.Row     = 1;\r
  HBufferImage.BufferPosition.Column  = 1;\r
\r
  if (!Recover) {\r
    Str = CatSPrint(NULL, L"%d Lines Read", HBufferImage.NumLines);\r
    if (Str == NULL) {\r
      StatusBarSetStatusString (L"Read Disk Failed");\r
      return EFI_OUT_OF_RESOURCES;\r
    }\r
\r
    StatusBarSetStatusString (Str);\r
    SHELL_FREE_NON_NULL (Str);\r
\r
    HMainEditor.SelectStart = 0;\r
    HMainEditor.SelectEnd   = 0;\r
\r
  }\r
\r
  //\r
  // has line\r
  //\r
  if (HBufferImage.Lines != NULL) {\r
    HBufferImage.CurrentLine = CR (\r
                                HBufferImage.ListHead->ForwardLink,\r
                                HEFI_EDITOR_LINE,\r
                                Link,\r
                                EFI_EDITOR_LINE_LIST\r
                                );\r
  } else {\r
    //\r
    // create a dummy line\r
    //\r
    Line = HBufferImageCreateLine ();\r
    if (Line == NULL) {\r
      StatusBarSetStatusString (L"Read Disk Failed");\r
      return EFI_OUT_OF_RESOURCES;\r
    }\r
\r
    HBufferImage.CurrentLine = Line;\r
  }\r
\r
  HBufferImage.Modified           = FALSE;\r
  HBufferImageNeedRefresh         = TRUE;\r
  HBufferImageOnlyLineNeedRefresh = FALSE;\r
  HBufferImageMouseNeedRefresh    = TRUE;\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Save lines in HBufferImage to disk.\r
  NOT ALLOW TO WRITE TO ANOTHER DISK!!!!!!!!!\r
\r
  @param[in] DeviceName   The device name.\r
  @param[in] Offset       The offset.\r
  @param[in] Size         The size.\r
\r
  @retval EFI_SUCCESS           The operation was successful.\r
  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.\r
  @retval EFI_LOAD_ERROR        A load error occured.\r
  @retval EFI_INVALID_PARAMETER A parameter was invalid.  \r
**/\r
EFI_STATUS\r
HDiskImageSave (\r
  IN CHAR16 *DeviceName,\r
  IN UINTN  Offset,\r
  IN UINTN  Size\r
  )\r
{\r
\r
  CONST EFI_DEVICE_PATH_PROTOCOL  *DevicePath;\r
  EFI_DEVICE_PATH_PROTOCOL        *DupDevicePath;\r
  EFI_BLOCK_IO_PROTOCOL           *BlkIo;\r
  EFI_STATUS                      Status;\r
  EFI_HANDLE                      Handle;\r
  VOID                            *Buffer;\r
  UINTN                           Bytes;\r
\r
  UINT64                          ByteOffset;\r
\r
  EDIT_FILE_TYPE                  BufferTypeBackup;\r
\r
  //\r
  // if not modified, directly return\r
  //\r
  if (HBufferImage.Modified == FALSE) {\r
    return EFI_SUCCESS;\r
  }\r
\r
  BufferTypeBackup        = HBufferImage.BufferType;\r
  HBufferImage.BufferType = FileTypeDiskBuffer;\r
\r
  DevicePath              = gEfiShellProtocol->GetDevicePathFromMap(DeviceName);\r
  if (DevicePath == NULL) {\r
//    StatusBarSetStatusString (L"Cannot Find Device");\r
    return EFI_INVALID_PARAMETER;\r
  }\r
  DupDevicePath = DuplicateDevicePath(DevicePath);\r
\r
  //\r
  // get blkio interface\r
  //\r
  Status = gBS->LocateDevicePath(&gEfiBlockIoProtocolGuid,&DupDevicePath,&Handle);\r
  FreePool(DupDevicePath);\r
  if (EFI_ERROR (Status)) {\r
//    StatusBarSetStatusString (L"Read Disk Failed");\r
    return Status;\r
  }\r
  Status = gBS->OpenProtocol(Handle, &gEfiBlockIoProtocolGuid, (VOID**)&BlkIo, gImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);\r
  if (EFI_ERROR (Status)) {\r
//    StatusBarSetStatusString (L"Read Disk Failed");\r
    return Status;\r
  }\r
\r
  Bytes   = BlkIo->Media->BlockSize * Size;\r
  Buffer  = AllocateZeroPool (Bytes);\r
\r
  if (Buffer == NULL) {\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
  //\r
  // concatenate the line list to a buffer\r
  //\r
  Status = HBufferImageListToBuffer (Buffer, Bytes);\r
  if (EFI_ERROR (Status)) {\r
    FreePool (Buffer);\r
    return Status;\r
  }\r
\r
  ByteOffset = MultU64x32 (Offset, BlkIo->Media->BlockSize);\r
\r
  //\r
  // write the buffer to disk\r
  //\r
  Status = BlkIo->WriteBlocks (\r
                    BlkIo,\r
                    BlkIo->Media->MediaId,\r
                    Offset,\r
                    Bytes,\r
                    Buffer\r
                    );\r
\r
  FreePool (Buffer);\r
\r
  if (EFI_ERROR (Status)) {\r
    return EFI_LOAD_ERROR;\r
  }\r
  //\r
  // now not modified\r
  //\r
  HBufferImage.Modified = FALSE;\r
\r
  return EFI_SUCCESS;\r
}\r
Commit	Line	Data
632820d1	1	/** @file\r
	2	Functions to deal with Disk buffer.\r
	3	\r
	4	Copyright (c) 2005 - 2011, Intel Corporation. All rights reserved. <BR>\r
	5	This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
	15	#include "HexEditor.h"\r
	16	#include <Protocol/BlockIo.h>\r
	17	\r
	18	extern EFI_HANDLE HImageHandleBackup;\r
	19	extern HEFI_EDITOR_BUFFER_IMAGE HBufferImage;\r
	20	\r
	21	extern BOOLEAN HBufferImageNeedRefresh;\r
	22	extern BOOLEAN HBufferImageOnlyLineNeedRefresh;\r
	23	extern BOOLEAN HBufferImageMouseNeedRefresh;\r
	24	\r
	25	extern HEFI_EDITOR_GLOBAL_EDITOR HMainEditor;\r
	26	\r
	27	HEFI_EDITOR_DISK_IMAGE HDiskImage;\r
	28	HEFI_EDITOR_DISK_IMAGE HDiskImageBackupVar;\r
	29	\r
	30	//\r
	31	// for basic initialization of HDiskImage\r
	32	//\r
	33	HEFI_EDITOR_DISK_IMAGE HDiskImageConst = {\r
	34	NULL,\r
	35	0,\r
	36	0,\r
	37	0\r
	38	};\r
	39	\r
a1d4bfcc	40	/**\r
	41	Initialization function for HDiskImage.\r
	42	\r
	43	@retval EFI_SUCCESS The operation was successful.\r
	44	@retval EFI_LOAD_ERROR A load error occured.\r
	45	**/\r
632820d1	46	EFI_STATUS\r
	47	HDiskImageInit (\r
	48	VOID\r
	49	)\r
632820d1	50	{\r
	51	//\r
	52	// basically initialize the HDiskImage\r
	53	//\r
	54	CopyMem (&HDiskImage, &HDiskImageConst, sizeof (HDiskImage));\r
	55	\r
	56	CopyMem (&HDiskImageBackupVar, &HDiskImageConst, sizeof (HDiskImageBackupVar));\r
	57	\r
	58	return EFI_SUCCESS;\r
	59	}\r
	60	\r
a1d4bfcc	61	/**\r
	62	Backup function for HDiskImage. Only a few fields need to be backup. \r
	63	This is for making the Disk buffer refresh as few as possible.\r
	64	\r
	65	@retval EFI_SUCCESS The operation was successful.\r
	66	@retval EFI_OUT_OF_RESOURCES gST->ConOut of resources.\r
	67	**/\r
632820d1	68	EFI_STATUS\r
	69	HDiskImageBackup (\r
	70	VOID\r
	71	)\r
632820d1	72	{\r
	73	//\r
	74	// backup the disk name, offset and size\r
	75	//\r
	76	//\r
	77	SHELL_FREE_NON_NULL (HDiskImageBackupVar.Name);\r
	78	\r
	79	HDiskImageBackupVar.Name = CatSPrint(NULL, L"%s", HDiskImage.Name);\r
	80	if (HDiskImageBackupVar.Name == NULL) {\r
	81	return EFI_OUT_OF_RESOURCES;\r
	82	}\r
	83	\r
	84	HDiskImageBackupVar.Offset = HDiskImage.Offset;\r
	85	HDiskImageBackupVar.Size = HDiskImage.Size;\r
	86	\r
	87	return EFI_SUCCESS;\r
	88	}\r
	89	\r
a1d4bfcc	90	/**\r
	91	Cleanup function for HDiskImage.\r
	92	\r
	93	@retval EFI_SUCCESS The operation was successful.\r
	94	**/\r
632820d1	95	EFI_STATUS\r
	96	HDiskImageCleanup (\r
	97	VOID\r
	98	)\r
632820d1	99	{\r
	100	SHELL_FREE_NON_NULL (HDiskImage.Name);\r
	101	SHELL_FREE_NON_NULL (HDiskImageBackupVar.Name);\r
	102	\r
	103	return EFI_SUCCESS;\r
	104	}\r
	105	\r
a1d4bfcc	106	/**\r
	107	Set FileName field in HFileImage.\r
	108	\r
	109	@param[in] Str File name to set.\r
	110	@param[in] Offset The offset.\r
	111	@param[in] Size The size.\r
	112	\r
	113	@retval EFI_SUCCESS The operation was successful.\r
	114	@retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r
	115	**/\r
632820d1	116	EFI_STATUS\r
	117	EFIAPI\r
	118	HDiskImageSetDiskNameOffsetSize (\r
	119	IN CONST CHAR16 *Str,\r
	120	IN UINTN Offset,\r
	121	IN UINTN Size\r
	122	)\r
632820d1	123	{\r
	124	UINTN Len;\r
	125	UINTN Index;\r
	126	\r
	127	//\r
	128	// free the old file name\r
	129	//\r
	130	SHELL_FREE_NON_NULL (HDiskImage.Name);\r
	131	\r
	132	Len = StrLen (Str);\r
	133	\r
	134	HDiskImage.Name = AllocateZeroPool (2 * (Len + 1));\r
	135	if (HDiskImage.Name == NULL) {\r
	136	return EFI_OUT_OF_RESOURCES;\r
	137	}\r
	138	\r
	139	for (Index = 0; Index < Len; Index++) {\r
	140	HDiskImage.Name[Index] = Str[Index];\r
	141	}\r
	142	\r
	143	HDiskImage.Name[Len] = L'\0';\r
	144	\r
	145	HDiskImage.Offset = Offset;\r
	146	HDiskImage.Size = Size;\r
	147	\r
	148	return EFI_SUCCESS;\r
	149	}\r
	150	\r
a1d4bfcc	151	/**\r
	152	Read a disk from disk into HBufferImage.\r
	153	\r
	154	@param[in] DeviceName filename to read.\r
	155	@param[in] Offset The offset.\r
	156	@param[in] Size The size.\r
	157	@param[in] Recover if is for recover, no information print.\r
	158	\r
	159	@retval EFI_SUCCESS The operation was successful.\r
	160	@retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r
	161	@retval EFI_LOAD_ERROR A load error occured.\r
	162	@retval EFI_INVALID_PARAMETER A parameter was invalid. \r
	163	**/\r
632820d1	164	EFI_STATUS\r
	165	HDiskImageRead (\r
	166	IN CONST CHAR16 *DeviceName,\r
	167	IN UINTN Offset,\r
	168	IN UINTN Size,\r
	169	IN BOOLEAN Recover\r
	170	)\r
632820d1	171	{\r
	172	CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	173	EFI_DEVICE_PATH_PROTOCOL *DupDevicePath;\r
980d554e	174	EFI_DEVICE_PATH_PROTOCOL *DupDevicePathForFree;\r
632820d1	175	EFI_HANDLE Handle;\r
	176	EFI_BLOCK_IO_PROTOCOL *BlkIo;\r
	177	EFI_STATUS Status;\r
	178	\r
	179	VOID *Buffer;\r
	180	CHAR16 *Str;\r
	181	UINTN Bytes;\r
	182	\r
	183	HEFI_EDITOR_LINE *Line;\r
	184	UINT64 ByteOffset;\r
	185	\r
	186	EDIT_FILE_TYPE BufferTypeBackup;\r
	187	\r
	188	BufferTypeBackup = HBufferImage.BufferType;\r
	189	HBufferImage.BufferType = FileTypeDiskBuffer;\r
	190	\r
	191	DevicePath = gEfiShellProtocol->GetDevicePathFromMap(DeviceName);\r
	192	if (DevicePath == NULL) {\r
	193	StatusBarSetStatusString (L"Cannot Find Device");\r
	194	return EFI_INVALID_PARAMETER;\r
	195	}\r
	196	DupDevicePath = DuplicateDevicePath(DevicePath);\r
980d554e	197	DupDevicePathForFree = DupDevicePath;\r
632820d1	198	//\r
	199	// get blkio interface\r
	200	//\r
	201	Status = gBS->LocateDevicePath(&gEfiBlockIoProtocolGuid,&DupDevicePath,&Handle);\r
980d554e	202	FreePool(DupDevicePathForFree);\r
632820d1	203	if (EFI_ERROR (Status)) {\r
	204	StatusBarSetStatusString (L"Read Disk Failed");\r
	205	return Status;\r
	206	}\r
	207	Status = gBS->OpenProtocol(Handle, &gEfiBlockIoProtocolGuid, (VOID**)&BlkIo, gImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);\r
	208	if (EFI_ERROR (Status)) {\r
	209	StatusBarSetStatusString (L"Read Disk Failed");\r
	210	return Status;\r
	211	}\r
	212	//\r
	213	// if Offset exceeds LastBlock,\r
	214	// return error\r
	215	//\r
	216	if (Offset > BlkIo->Media->LastBlock \|\| Offset + Size > BlkIo->Media->LastBlock) {\r
	217	StatusBarSetStatusString (L"Invalid Offset + Size");\r
	218	return EFI_LOAD_ERROR;\r
	219	}\r
	220	\r
	221	Bytes = BlkIo->Media->BlockSize * Size;\r
	222	Buffer = AllocateZeroPool (Bytes);\r
	223	\r
	224	if (Buffer == NULL) {\r
	225	StatusBarSetStatusString (L"Read Disk Failed");\r
	226	return EFI_OUT_OF_RESOURCES;\r
	227	}\r
	228	\r
	229	ByteOffset = MultU64x32 (Offset, BlkIo->Media->BlockSize);\r
	230	\r
	231	//\r
	232	// read from disk\r
	233	//\r
	234	Status = BlkIo->ReadBlocks (\r
	235	BlkIo,\r
	236	BlkIo->Media->MediaId,\r
	237	Offset,\r
	238	Bytes,\r
	239	Buffer\r
	240	);\r
	241	\r
	242	if (EFI_ERROR (Status)) {\r
	243	FreePool (Buffer);\r
	244	StatusBarSetStatusString (L"Read Disk Failed");\r
	245	return EFI_LOAD_ERROR;\r
	246	}\r
	247	\r
	248	HBufferImageFree ();\r
	249	\r
	250	//\r
	251	// convert buffer to line list\r
	252	//\r
	253	Status = HBufferImageBufferToList (Buffer, Bytes);\r
	254	FreePool (Buffer);\r
	255	\r
	256	if (EFI_ERROR (Status)) {\r
	257	StatusBarSetStatusString (L"Read Disk Failed");\r
	258	return Status;\r
	259	}\r
	260	\r
	261	Status = HDiskImageSetDiskNameOffsetSize (DeviceName, Offset, Size);\r
	262	if (EFI_ERROR (Status)) {\r
	263	StatusBarSetStatusString (L"Read Disk Failed");\r
	264	return EFI_OUT_OF_RESOURCES;\r
	265	}\r
	266	//\r
267	// initialize some variables\r
268	//\r
269	HDiskImage.BlockSize = BlkIo->Media->BlockSize;\r
270	\r
271	HBufferImage.DisplayPosition.Row = 2;\r
272	HBufferImage.DisplayPosition.Column = 10;\r
273	\r
274	HBufferImage.MousePosition.Row = 2;\r
275	HBufferImage.MousePosition.Column = 10;\r
276	\r
277	HBufferImage.LowVisibleRow = 1;\r
278	HBufferImage.HighBits = TRUE;\r
279	\r
280	HBufferImage.BufferPosition.Row = 1;\r
281	HBufferImage.BufferPosition.Column = 1;\r
282	\r
283	if (!Recover) {\r
284	Str = CatSPrint(NULL, L"%d Lines Read", HBufferImage.NumLines);\r
285	if (Str == NULL) {\r
286	StatusBarSetStatusString (L"Read Disk Failed");\r
287	return EFI_OUT_OF_RESOURCES;\r
288	}\r
289	\r
290	StatusBarSetStatusString (Str);\r
291	SHELL_FREE_NON_NULL (Str);\r
292	\r
293	HMainEditor.SelectStart = 0;\r
294	HMainEditor.SelectEnd = 0;\r
295	\r
296	}\r
297	\r
298	//\r
299	// has line\r
300	//\r
301	if (HBufferImage.Lines != NULL) {\r
302	HBufferImage.CurrentLine = CR (\r
303	HBufferImage.ListHead->ForwardLink,\r
304	HEFI_EDITOR_LINE,\r
305	Link,\r
306	EFI_EDITOR_LINE_LIST\r
307	);\r
308	} else {\r
309	//\r
310	// create a dummy line\r
311	//\r
312	Line = HBufferImageCreateLine ();\r
313	if (Line == NULL) {\r
314	StatusBarSetStatusString (L"Read Disk Failed");\r
315	return EFI_OUT_OF_RESOURCES;\r
316	}\r
317	\r
318	HBufferImage.CurrentLine = Line;\r
319	}\r
320	\r
321	HBufferImage.Modified = FALSE;\r
322	HBufferImageNeedRefresh = TRUE;\r
323	HBufferImageOnlyLineNeedRefresh = FALSE;\r
324	HBufferImageMouseNeedRefresh = TRUE;\r
325	\r
326	return EFI_SUCCESS;\r
327	}\r
328	\r
a1d4bfcc	329	/**\r
	330	Save lines in HBufferImage to disk.\r
	331	NOT ALLOW TO WRITE TO ANOTHER DISK!!!!!!!!!\r
	332	\r
	333	@param[in] DeviceName The device name.\r
	334	@param[in] Offset The offset.\r
	335	@param[in] Size The size.\r
	336	\r
	337	@retval EFI_SUCCESS The operation was successful.\r
	338	@retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r
	339	@retval EFI_LOAD_ERROR A load error occured.\r
	340	@retval EFI_INVALID_PARAMETER A parameter was invalid. \r
	341	**/\r
632820d1	342	EFI_STATUS\r
	343	HDiskImageSave (\r
	344	IN CHAR16 *DeviceName,\r
	345	IN UINTN Offset,\r
	346	IN UINTN Size\r
	347	)\r
632820d1	348	{\r
	349	\r
	350	CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	351	EFI_DEVICE_PATH_PROTOCOL *DupDevicePath;\r
	352	EFI_BLOCK_IO_PROTOCOL *BlkIo;\r
	353	EFI_STATUS Status;\r
	354	EFI_HANDLE Handle;\r
	355	VOID *Buffer;\r
	356	UINTN Bytes;\r
	357	\r
	358	UINT64 ByteOffset;\r
	359	\r
	360	EDIT_FILE_TYPE BufferTypeBackup;\r
	361	\r
	362	//\r
	363	// if not modified, directly return\r
	364	//\r
	365	if (HBufferImage.Modified == FALSE) {\r
	366	return EFI_SUCCESS;\r
	367	}\r
	368	\r
	369	BufferTypeBackup = HBufferImage.BufferType;\r
	370	HBufferImage.BufferType = FileTypeDiskBuffer;\r
	371	\r
	372	DevicePath = gEfiShellProtocol->GetDevicePathFromMap(DeviceName);\r
	373	if (DevicePath == NULL) {\r
	374	// StatusBarSetStatusString (L"Cannot Find Device");\r
	375	return EFI_INVALID_PARAMETER;\r
	376	}\r
	377	DupDevicePath = DuplicateDevicePath(DevicePath);\r
	378	\r
	379	//\r
	380	// get blkio interface\r
	381	//\r
	382	Status = gBS->LocateDevicePath(&gEfiBlockIoProtocolGuid,&DupDevicePath,&Handle);\r
	383	FreePool(DupDevicePath);\r
	384	if (EFI_ERROR (Status)) {\r
	385	// StatusBarSetStatusString (L"Read Disk Failed");\r
	386	return Status;\r
	387	}\r
	388	Status = gBS->OpenProtocol(Handle, &gEfiBlockIoProtocolGuid, (VOID**)&BlkIo, gImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);\r
	389	if (EFI_ERROR (Status)) {\r
	390	// StatusBarSetStatusString (L"Read Disk Failed");\r
	391	return Status;\r
	392	}\r
	393	\r
	394	Bytes = BlkIo->Media->BlockSize * Size;\r
	395	Buffer = AllocateZeroPool (Bytes);\r
	396	\r
	397	if (Buffer == NULL) {\r
	398	return EFI_OUT_OF_RESOURCES;\r
	399	}\r
	400	//\r
	401	// concatenate the line list to a buffer\r
	402	//\r
	403	Status = HBufferImageListToBuffer (Buffer, Bytes);\r
	404	if (EFI_ERROR (Status)) {\r
	405	FreePool (Buffer);\r
	406	return Status;\r
	407	}\r
	408	\r
	409	ByteOffset = MultU64x32 (Offset, BlkIo->Media->BlockSize);\r
	410	\r
	411	//\r
412	// write the buffer to disk\r
413	//\r
414	Status = BlkIo->WriteBlocks (\r
415	BlkIo,\r
416	BlkIo->Media->MediaId,\r
417	Offset,\r
418	Bytes,\r
419	Buffer\r
420	);\r
421	\r
422	FreePool (Buffer);\r
423	\r
424	if (EFI_ERROR (Status)) {\r
425	return EFI_LOAD_ERROR;\r
426	}\r
427	//\r
428	// now not modified\r
429	//\r
430	HBufferImage.Modified = FALSE;\r
431	\r
432	return EFI_SUCCESS;\r
433	}\r