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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 | |
632820d1 | 184 | \r |
632820d1 | 185 | HBufferImage.BufferType = FileTypeDiskBuffer;\r |
186 | \r | |
187 | DevicePath = gEfiShellProtocol->GetDevicePathFromMap(DeviceName);\r | |
188 | if (DevicePath == NULL) {\r | |
189 | StatusBarSetStatusString (L"Cannot Find Device");\r | |
190 | return EFI_INVALID_PARAMETER;\r | |
191 | }\r | |
192 | DupDevicePath = DuplicateDevicePath(DevicePath);\r | |
980d554e | 193 | DupDevicePathForFree = DupDevicePath;\r |
632820d1 | 194 | //\r |
195 | // get blkio interface\r | |
196 | //\r | |
197 | Status = gBS->LocateDevicePath(&gEfiBlockIoProtocolGuid,&DupDevicePath,&Handle);\r | |
980d554e | 198 | FreePool(DupDevicePathForFree);\r |
632820d1 | 199 | if (EFI_ERROR (Status)) {\r |
200 | StatusBarSetStatusString (L"Read Disk Failed");\r | |
201 | return Status;\r | |
202 | }\r | |
203 | Status = gBS->OpenProtocol(Handle, &gEfiBlockIoProtocolGuid, (VOID**)&BlkIo, gImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);\r | |
204 | if (EFI_ERROR (Status)) {\r | |
205 | StatusBarSetStatusString (L"Read Disk Failed");\r | |
206 | return Status;\r | |
207 | }\r | |
208 | //\r | |
209 | // if Offset exceeds LastBlock,\r | |
210 | // return error\r | |
211 | //\r | |
212 | if (Offset > BlkIo->Media->LastBlock || Offset + Size > BlkIo->Media->LastBlock) {\r | |
213 | StatusBarSetStatusString (L"Invalid Offset + Size");\r | |
214 | return EFI_LOAD_ERROR;\r | |
215 | }\r | |
216 | \r | |
217 | Bytes = BlkIo->Media->BlockSize * Size;\r | |
218 | Buffer = AllocateZeroPool (Bytes);\r | |
219 | \r | |
220 | if (Buffer == NULL) {\r | |
221 | StatusBarSetStatusString (L"Read Disk Failed");\r | |
222 | return EFI_OUT_OF_RESOURCES;\r | |
223 | }\r | |
224 | \r | |
632820d1 | 225 | //\r |
226 | // read from disk\r | |
227 | //\r | |
228 | Status = BlkIo->ReadBlocks (\r | |
229 | BlkIo,\r | |
230 | BlkIo->Media->MediaId,\r | |
231 | Offset,\r | |
232 | Bytes,\r | |
233 | Buffer\r | |
234 | );\r | |
235 | \r | |
236 | if (EFI_ERROR (Status)) {\r | |
237 | FreePool (Buffer);\r | |
238 | StatusBarSetStatusString (L"Read Disk Failed");\r | |
239 | return EFI_LOAD_ERROR;\r | |
240 | }\r | |
241 | \r | |
242 | HBufferImageFree ();\r | |
243 | \r | |
244 | //\r | |
245 | // convert buffer to line list\r | |
246 | //\r | |
247 | Status = HBufferImageBufferToList (Buffer, Bytes);\r | |
248 | FreePool (Buffer);\r | |
249 | \r | |
250 | if (EFI_ERROR (Status)) {\r | |
251 | StatusBarSetStatusString (L"Read Disk Failed");\r | |
252 | return Status;\r | |
253 | }\r | |
254 | \r | |
255 | Status = HDiskImageSetDiskNameOffsetSize (DeviceName, Offset, Size);\r | |
256 | if (EFI_ERROR (Status)) {\r | |
257 | StatusBarSetStatusString (L"Read Disk Failed");\r | |
258 | return EFI_OUT_OF_RESOURCES;\r | |
259 | }\r | |
260 | //\r | |
261 | // initialize some variables\r | |
262 | //\r | |
263 | HDiskImage.BlockSize = BlkIo->Media->BlockSize;\r | |
264 | \r | |
265 | HBufferImage.DisplayPosition.Row = 2;\r | |
266 | HBufferImage.DisplayPosition.Column = 10;\r | |
267 | \r | |
268 | HBufferImage.MousePosition.Row = 2;\r | |
269 | HBufferImage.MousePosition.Column = 10;\r | |
270 | \r | |
271 | HBufferImage.LowVisibleRow = 1;\r | |
272 | HBufferImage.HighBits = TRUE;\r | |
273 | \r | |
274 | HBufferImage.BufferPosition.Row = 1;\r | |
275 | HBufferImage.BufferPosition.Column = 1;\r | |
276 | \r | |
277 | if (!Recover) {\r | |
278 | Str = CatSPrint(NULL, L"%d Lines Read", HBufferImage.NumLines);\r | |
279 | if (Str == NULL) {\r | |
280 | StatusBarSetStatusString (L"Read Disk Failed");\r | |
281 | return EFI_OUT_OF_RESOURCES;\r | |
282 | }\r | |
283 | \r | |
284 | StatusBarSetStatusString (Str);\r | |
285 | SHELL_FREE_NON_NULL (Str);\r | |
286 | \r | |
287 | HMainEditor.SelectStart = 0;\r | |
288 | HMainEditor.SelectEnd = 0;\r | |
289 | \r | |
290 | }\r | |
291 | \r | |
292 | //\r | |
293 | // has line\r | |
294 | //\r | |
295 | if (HBufferImage.Lines != NULL) {\r | |
296 | HBufferImage.CurrentLine = CR (\r | |
297 | HBufferImage.ListHead->ForwardLink,\r | |
298 | HEFI_EDITOR_LINE,\r | |
299 | Link,\r | |
300 | EFI_EDITOR_LINE_LIST\r | |
301 | );\r | |
302 | } else {\r | |
303 | //\r | |
304 | // create a dummy line\r | |
305 | //\r | |
306 | Line = HBufferImageCreateLine ();\r | |
307 | if (Line == NULL) {\r | |
308 | StatusBarSetStatusString (L"Read Disk Failed");\r | |
309 | return EFI_OUT_OF_RESOURCES;\r | |
310 | }\r | |
311 | \r | |
312 | HBufferImage.CurrentLine = Line;\r | |
313 | }\r | |
314 | \r | |
315 | HBufferImage.Modified = FALSE;\r | |
316 | HBufferImageNeedRefresh = TRUE;\r | |
317 | HBufferImageOnlyLineNeedRefresh = FALSE;\r | |
318 | HBufferImageMouseNeedRefresh = TRUE;\r | |
319 | \r | |
320 | return EFI_SUCCESS;\r | |
321 | }\r | |
322 | \r | |
a1d4bfcc | 323 | /**\r |
324 | Save lines in HBufferImage to disk.\r | |
325 | NOT ALLOW TO WRITE TO ANOTHER DISK!!!!!!!!!\r | |
326 | \r | |
327 | @param[in] DeviceName The device name.\r | |
328 | @param[in] Offset The offset.\r | |
329 | @param[in] Size The size.\r | |
330 | \r | |
331 | @retval EFI_SUCCESS The operation was successful.\r | |
332 | @retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r | |
333 | @retval EFI_LOAD_ERROR A load error occured.\r | |
334 | @retval EFI_INVALID_PARAMETER A parameter was invalid. \r | |
335 | **/\r | |
632820d1 | 336 | EFI_STATUS\r |
337 | HDiskImageSave (\r | |
338 | IN CHAR16 *DeviceName,\r | |
339 | IN UINTN Offset,\r | |
340 | IN UINTN Size\r | |
341 | )\r | |
632820d1 | 342 | {\r |
343 | \r | |
344 | CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
345 | EFI_DEVICE_PATH_PROTOCOL *DupDevicePath;\r | |
346 | EFI_BLOCK_IO_PROTOCOL *BlkIo;\r | |
347 | EFI_STATUS Status;\r | |
348 | EFI_HANDLE Handle;\r | |
349 | VOID *Buffer;\r | |
350 | UINTN Bytes;\r | |
351 | \r | |
632820d1 | 352 | //\r |
353 | // if not modified, directly return\r | |
354 | //\r | |
355 | if (HBufferImage.Modified == FALSE) {\r | |
356 | return EFI_SUCCESS;\r | |
357 | }\r | |
358 | \r | |
632820d1 | 359 | HBufferImage.BufferType = FileTypeDiskBuffer;\r |
360 | \r | |
361 | DevicePath = gEfiShellProtocol->GetDevicePathFromMap(DeviceName);\r | |
362 | if (DevicePath == NULL) {\r | |
363 | // StatusBarSetStatusString (L"Cannot Find Device");\r | |
364 | return EFI_INVALID_PARAMETER;\r | |
365 | }\r | |
366 | DupDevicePath = DuplicateDevicePath(DevicePath);\r | |
367 | \r | |
368 | //\r | |
369 | // get blkio interface\r | |
370 | //\r | |
371 | Status = gBS->LocateDevicePath(&gEfiBlockIoProtocolGuid,&DupDevicePath,&Handle);\r | |
372 | FreePool(DupDevicePath);\r | |
373 | if (EFI_ERROR (Status)) {\r | |
374 | // StatusBarSetStatusString (L"Read Disk Failed");\r | |
375 | return Status;\r | |
376 | }\r | |
377 | Status = gBS->OpenProtocol(Handle, &gEfiBlockIoProtocolGuid, (VOID**)&BlkIo, gImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);\r | |
378 | if (EFI_ERROR (Status)) {\r | |
379 | // StatusBarSetStatusString (L"Read Disk Failed");\r | |
380 | return Status;\r | |
381 | }\r | |
382 | \r | |
383 | Bytes = BlkIo->Media->BlockSize * Size;\r | |
384 | Buffer = AllocateZeroPool (Bytes);\r | |
385 | \r | |
386 | if (Buffer == NULL) {\r | |
387 | return EFI_OUT_OF_RESOURCES;\r | |
388 | }\r | |
389 | //\r | |
390 | // concatenate the line list to a buffer\r | |
391 | //\r | |
392 | Status = HBufferImageListToBuffer (Buffer, Bytes);\r | |
393 | if (EFI_ERROR (Status)) {\r | |
394 | FreePool (Buffer);\r | |
395 | return Status;\r | |
396 | }\r | |
397 | \r | |
632820d1 | 398 | //\r |
399 | // write the buffer to disk\r | |
400 | //\r | |
401 | Status = BlkIo->WriteBlocks (\r | |
402 | BlkIo,\r | |
403 | BlkIo->Media->MediaId,\r | |
404 | Offset,\r | |
405 | Bytes,\r | |
406 | Buffer\r | |
407 | );\r | |
408 | \r | |
409 | FreePool (Buffer);\r | |
410 | \r | |
411 | if (EFI_ERROR (Status)) {\r | |
412 | return EFI_LOAD_ERROR;\r | |
413 | }\r | |
414 | //\r | |
415 | // now not modified\r | |
416 | //\r | |
417 | HBufferImage.Modified = FALSE;\r | |
418 | \r | |
419 | return EFI_SUCCESS;\r | |
420 | }\r |