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1 | /** @file\r |
2 | Handle operations in files and directories from UDF/ECMA-167 file systems.\r | |
3 | \r | |
4 | Copyright (C) 2014-2017 Paulo Alcantara <pcacjr@zytor.com>\r | |
b9ae1705 | 5 | Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>\r |
99c9b949 PA |
6 | \r |
7 | This program and the accompanying materials are licensed and made available\r | |
8 | under the terms and conditions of the BSD License which accompanies this\r | |
9 | distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT\r | |
13 | WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | **/\r | |
15 | \r | |
16 | #include "Udf.h"\r | |
17 | \r | |
18 | EFI_FILE_PROTOCOL gUdfFileIoOps = {\r | |
19 | EFI_FILE_PROTOCOL_REVISION,\r | |
20 | UdfOpen,\r | |
21 | UdfClose,\r | |
22 | UdfDelete,\r | |
23 | UdfRead,\r | |
24 | UdfWrite,\r | |
25 | UdfGetPosition,\r | |
26 | UdfSetPosition,\r | |
27 | UdfGetInfo,\r | |
28 | UdfSetInfo,\r | |
29 | UdfFlush,\r | |
30 | NULL,\r | |
31 | NULL,\r | |
32 | NULL,\r | |
33 | NULL\r | |
34 | };\r | |
35 | \r | |
36 | #define _ROOT_FILE(_PrivData) (_PrivData)->Root\r | |
37 | #define _PARENT_FILE(_PrivData) \\r | |
38 | ((_PrivData)->IsRootDirectory ? (_PrivData)->Root : &(_PrivData)->File)\r | |
39 | #define _FILE(_PrivData) _PARENT_FILE(_PrivData)\r | |
40 | \r | |
41 | /**\r | |
42 | Open the root directory on a volume.\r | |
43 | \r | |
44 | @param This Protocol instance pointer.\r | |
45 | @param Root Returns an Open file handle for the root directory\r | |
46 | \r | |
47 | @retval EFI_SUCCESS The device was opened.\r | |
48 | @retval EFI_UNSUPPORTED This volume does not support the file system.\r | |
49 | @retval EFI_NO_MEDIA The device has no media.\r | |
50 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
51 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
52 | @retval EFI_ACCESS_DENIED The service denied access to the file.\r | |
53 | @retval EFI_OUT_OF_RESOURCES The volume was not opened due to lack of\r | |
54 | resources.\r | |
55 | \r | |
56 | **/\r | |
57 | EFI_STATUS\r | |
58 | EFIAPI\r | |
59 | UdfOpenVolume (\r | |
60 | IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,\r | |
61 | OUT EFI_FILE_PROTOCOL **Root\r | |
62 | )\r | |
63 | {\r | |
64 | EFI_TPL OldTpl;\r | |
65 | EFI_STATUS Status;\r | |
66 | PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;\r | |
67 | PRIVATE_UDF_FILE_DATA *PrivFileData;\r | |
68 | \r | |
69 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
70 | \r | |
71 | if (This == NULL || Root == NULL) {\r | |
72 | Status = EFI_INVALID_PARAMETER;\r | |
73 | goto Error_Invalid_Params;\r | |
74 | }\r | |
75 | \r | |
76 | PrivFsData = PRIVATE_UDF_SIMPLE_FS_DATA_FROM_THIS (This);\r | |
77 | \r | |
78 | if (PrivFsData->OpenFiles == 0) {\r | |
79 | //\r | |
80 | // There is no more open files. Read volume information again since it was\r | |
81 | // cleaned up on the last UdfClose() call.\r | |
82 | //\r | |
83 | Status = ReadUdfVolumeInformation (\r | |
84 | PrivFsData->BlockIo,\r | |
85 | PrivFsData->DiskIo,\r | |
86 | &PrivFsData->Volume\r | |
87 | );\r | |
88 | if (EFI_ERROR (Status)) {\r | |
89 | goto Error_Read_Udf_Volume;\r | |
90 | }\r | |
91 | }\r | |
92 | \r | |
93 | CleanupFileInformation (&PrivFsData->Root);\r | |
94 | \r | |
95 | //\r | |
96 | // Find root directory file.\r | |
97 | //\r | |
98 | Status = FindRootDirectory (\r | |
99 | PrivFsData->BlockIo,\r | |
100 | PrivFsData->DiskIo,\r | |
101 | &PrivFsData->Volume,\r | |
102 | &PrivFsData->Root\r | |
103 | );\r | |
104 | if (EFI_ERROR (Status)) {\r | |
105 | goto Error_Find_Root_Dir;\r | |
106 | }\r | |
107 | \r | |
108 | PrivFileData =\r | |
109 | (PRIVATE_UDF_FILE_DATA *) AllocateZeroPool (sizeof (PRIVATE_UDF_FILE_DATA));\r | |
110 | if (PrivFileData == NULL) {\r | |
111 | Status = EFI_OUT_OF_RESOURCES;\r | |
112 | goto Error_Alloc_Priv_File_Data;\r | |
113 | }\r | |
114 | \r | |
115 | PrivFileData->Signature = PRIVATE_UDF_FILE_DATA_SIGNATURE;\r | |
116 | PrivFileData->SimpleFs = This;\r | |
117 | PrivFileData->Root = &PrivFsData->Root;\r | |
118 | PrivFileData->IsRootDirectory = TRUE;\r | |
119 | \r | |
120 | CopyMem ((VOID *)&PrivFileData->FileIo, (VOID *)&gUdfFileIoOps,\r | |
121 | sizeof (EFI_FILE_PROTOCOL));\r | |
122 | \r | |
123 | *Root = &PrivFileData->FileIo;\r | |
124 | \r | |
125 | PrivFsData->OpenFiles++;\r | |
126 | \r | |
127 | gBS->RestoreTPL (OldTpl);\r | |
128 | \r | |
129 | return EFI_SUCCESS;\r | |
130 | \r | |
131 | Error_Alloc_Priv_File_Data:\r | |
132 | CleanupFileInformation (&PrivFsData->Root);\r | |
133 | \r | |
134 | Error_Find_Root_Dir:\r | |
99c9b949 PA |
135 | \r |
136 | Error_Read_Udf_Volume:\r | |
137 | Error_Invalid_Params:\r | |
138 | gBS->RestoreTPL (OldTpl);\r | |
139 | \r | |
140 | return Status;\r | |
141 | }\r | |
142 | \r | |
143 | /**\r | |
144 | Opens a new file relative to the source file's location.\r | |
145 | \r | |
146 | @param This The protocol instance pointer.\r | |
147 | @param NewHandle Returns File Handle for FileName.\r | |
148 | @param FileName Null terminated string. "\", ".", and ".." are supported.\r | |
149 | @param OpenMode Open mode for file.\r | |
150 | @param Attributes Only used for EFI_FILE_MODE_CREATE.\r | |
151 | \r | |
152 | @retval EFI_SUCCESS The device was opened.\r | |
153 | @retval EFI_NOT_FOUND The specified file could not be found on the\r | |
154 | device.\r | |
155 | @retval EFI_NO_MEDIA The device has no media.\r | |
156 | @retval EFI_MEDIA_CHANGED The media has changed.\r | |
157 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
158 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
159 | @retval EFI_ACCESS_DENIED The service denied access to the file.\r | |
160 | @retval EFI_OUT_OF_RESOURCES The volume was not opened due to lack of\r | |
161 | resources.\r | |
162 | @retval EFI_VOLUME_FULL The volume is full.\r | |
163 | \r | |
164 | **/\r | |
165 | EFI_STATUS\r | |
166 | EFIAPI\r | |
167 | UdfOpen (\r | |
168 | IN EFI_FILE_PROTOCOL *This,\r | |
169 | OUT EFI_FILE_PROTOCOL **NewHandle,\r | |
170 | IN CHAR16 *FileName,\r | |
171 | IN UINT64 OpenMode,\r | |
172 | IN UINT64 Attributes\r | |
173 | )\r | |
174 | {\r | |
175 | EFI_TPL OldTpl;\r | |
176 | EFI_STATUS Status;\r | |
177 | PRIVATE_UDF_FILE_DATA *PrivFileData;\r | |
178 | PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;\r | |
eb928b17 | 179 | CHAR16 FilePath[UDF_PATH_LENGTH];\r |
99c9b949 PA |
180 | UDF_FILE_INFO File;\r |
181 | PRIVATE_UDF_FILE_DATA *NewPrivFileData;\r | |
182 | CHAR16 *TempFileName;\r | |
183 | \r | |
eb928b17 | 184 | ZeroMem (FilePath, sizeof FilePath);\r |
99c9b949 PA |
185 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
186 | \r | |
187 | if (This == NULL || NewHandle == NULL || FileName == NULL) {\r | |
188 | Status = EFI_INVALID_PARAMETER;\r | |
189 | goto Error_Invalid_Params;\r | |
190 | }\r | |
191 | \r | |
192 | if (OpenMode != EFI_FILE_MODE_READ) {\r | |
193 | Status = EFI_WRITE_PROTECTED;\r | |
194 | goto Error_Invalid_Params;\r | |
195 | }\r | |
196 | \r | |
197 | PrivFileData = PRIVATE_UDF_FILE_DATA_FROM_THIS (This);\r | |
198 | \r | |
199 | PrivFsData = PRIVATE_UDF_SIMPLE_FS_DATA_FROM_THIS (PrivFileData->SimpleFs);\r | |
200 | \r | |
201 | //\r | |
202 | // Build full path\r | |
203 | //\r | |
204 | if (*FileName == L'\\') {\r | |
205 | StrCpyS (FilePath, UDF_PATH_LENGTH, FileName);\r | |
206 | } else {\r | |
207 | StrCpyS (FilePath, UDF_PATH_LENGTH, PrivFileData->AbsoluteFileName);\r | |
208 | StrCatS (FilePath, UDF_PATH_LENGTH, L"\\");\r | |
209 | StrCatS (FilePath, UDF_PATH_LENGTH, FileName);\r | |
210 | }\r | |
211 | \r | |
212 | MangleFileName (FilePath);\r | |
213 | if (FilePath[0] == L'\0') {\r | |
214 | Status = EFI_NOT_FOUND;\r | |
215 | goto Error_Bad_FileName;\r | |
216 | }\r | |
217 | \r | |
218 | Status = FindFile (\r | |
219 | PrivFsData->BlockIo,\r | |
220 | PrivFsData->DiskIo,\r | |
221 | &PrivFsData->Volume,\r | |
222 | FilePath,\r | |
223 | _ROOT_FILE (PrivFileData),\r | |
224 | _PARENT_FILE (PrivFileData),\r | |
225 | &_PARENT_FILE(PrivFileData)->FileIdentifierDesc->Icb,\r | |
226 | &File\r | |
227 | );\r | |
228 | if (EFI_ERROR (Status)) {\r | |
229 | goto Error_Find_File;\r | |
230 | }\r | |
231 | \r | |
232 | NewPrivFileData =\r | |
233 | (PRIVATE_UDF_FILE_DATA *)AllocateZeroPool (sizeof (PRIVATE_UDF_FILE_DATA));\r | |
234 | if (NewPrivFileData == NULL) {\r | |
235 | Status = EFI_OUT_OF_RESOURCES;\r | |
236 | goto Error_Alloc_New_Priv_File_Data;\r | |
237 | }\r | |
238 | \r | |
239 | CopyMem ((VOID *)NewPrivFileData, (VOID *)PrivFileData,\r | |
240 | sizeof (PRIVATE_UDF_FILE_DATA));\r | |
241 | CopyMem ((VOID *)&NewPrivFileData->File, &File, sizeof (UDF_FILE_INFO));\r | |
242 | \r | |
243 | NewPrivFileData->IsRootDirectory = FALSE;\r | |
244 | \r | |
245 | StrCpyS (NewPrivFileData->AbsoluteFileName, UDF_PATH_LENGTH, FilePath);\r | |
246 | FileName = NewPrivFileData->AbsoluteFileName;\r | |
247 | \r | |
248 | while ((TempFileName = StrStr (FileName, L"\\")) != NULL) {\r | |
249 | FileName = TempFileName + 1;\r | |
250 | }\r | |
251 | \r | |
b9ae1705 | 252 | StrCpyS (NewPrivFileData->FileName, UDF_FILENAME_LENGTH, FileName);\r |
99c9b949 PA |
253 | \r |
254 | Status = GetFileSize (\r | |
255 | PrivFsData->BlockIo,\r | |
256 | PrivFsData->DiskIo,\r | |
257 | &PrivFsData->Volume,\r | |
258 | &NewPrivFileData->File,\r | |
259 | &NewPrivFileData->FileSize\r | |
260 | );\r | |
99c9b949 | 261 | if (EFI_ERROR (Status)) {\r |
f355dd34 HW |
262 | DEBUG ((\r |
263 | DEBUG_ERROR,\r | |
264 | "%a: GetFileSize() fails with status - %r.\n",\r | |
265 | __FUNCTION__, Status\r | |
266 | ));\r | |
99c9b949 PA |
267 | goto Error_Get_File_Size;\r |
268 | }\r | |
269 | \r | |
270 | NewPrivFileData->FilePosition = 0;\r | |
271 | ZeroMem ((VOID *)&NewPrivFileData->ReadDirInfo,\r | |
272 | sizeof (UDF_READ_DIRECTORY_INFO));\r | |
273 | \r | |
274 | *NewHandle = &NewPrivFileData->FileIo;\r | |
275 | \r | |
276 | PrivFsData->OpenFiles++;\r | |
277 | \r | |
278 | gBS->RestoreTPL (OldTpl);\r | |
279 | \r | |
280 | return Status;\r | |
281 | \r | |
282 | Error_Get_File_Size:\r | |
283 | FreePool ((VOID *)NewPrivFileData);\r | |
284 | \r | |
285 | Error_Alloc_New_Priv_File_Data:\r | |
286 | CleanupFileInformation (&File);\r | |
287 | \r | |
288 | Error_Find_File:\r | |
289 | Error_Bad_FileName:\r | |
290 | Error_Invalid_Params:\r | |
291 | gBS->RestoreTPL (OldTpl);\r | |
292 | \r | |
293 | return Status;\r | |
294 | }\r | |
295 | \r | |
296 | /**\r | |
297 | Read data from the file.\r | |
298 | \r | |
299 | @param This Protocol instance pointer.\r | |
300 | @param BufferSize On input size of buffer, on output amount of data in\r | |
301 | buffer.\r | |
302 | @param Buffer The buffer in which data is read.\r | |
303 | \r | |
304 | @retval EFI_SUCCESS Data was read.\r | |
305 | @retval EFI_NO_MEDIA The device has no media.\r | |
306 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
307 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
308 | @retval EFI_BUFFER_TO_SMALL BufferSize is too small. BufferSize contains\r | |
309 | required size.\r | |
310 | \r | |
311 | **/\r | |
312 | EFI_STATUS\r | |
313 | EFIAPI\r | |
314 | UdfRead (\r | |
315 | IN EFI_FILE_PROTOCOL *This,\r | |
316 | IN OUT UINTN *BufferSize,\r | |
317 | OUT VOID *Buffer\r | |
318 | )\r | |
319 | {\r | |
320 | EFI_TPL OldTpl;\r | |
321 | EFI_STATUS Status;\r | |
322 | PRIVATE_UDF_FILE_DATA *PrivFileData;\r | |
323 | PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;\r | |
324 | UDF_VOLUME_INFO *Volume;\r | |
325 | UDF_FILE_INFO *Parent;\r | |
326 | UDF_READ_DIRECTORY_INFO *ReadDirInfo;\r | |
327 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
328 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
329 | UDF_FILE_INFO FoundFile;\r | |
330 | UDF_FILE_IDENTIFIER_DESCRIPTOR *NewFileIdentifierDesc;\r | |
331 | VOID *NewFileEntryData;\r | |
eb928b17 | 332 | CHAR16 FileName[UDF_FILENAME_LENGTH];\r |
99c9b949 PA |
333 | UINT64 FileSize;\r |
334 | UINT64 BufferSizeUint64;\r | |
335 | \r | |
eb928b17 | 336 | ZeroMem (FileName, sizeof FileName);\r |
99c9b949 PA |
337 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
338 | \r | |
339 | if (This == NULL || BufferSize == NULL || (*BufferSize != 0 &&\r | |
340 | Buffer == NULL)) {\r | |
341 | Status = EFI_INVALID_PARAMETER;\r | |
342 | goto Error_Invalid_Params;\r | |
343 | }\r | |
344 | \r | |
345 | PrivFileData = PRIVATE_UDF_FILE_DATA_FROM_THIS (This);\r | |
346 | PrivFsData = PRIVATE_UDF_SIMPLE_FS_DATA_FROM_THIS (PrivFileData->SimpleFs);\r | |
347 | \r | |
348 | BlockIo = PrivFsData->BlockIo;\r | |
349 | DiskIo = PrivFsData->DiskIo;\r | |
350 | Volume = &PrivFsData->Volume;\r | |
351 | ReadDirInfo = &PrivFileData->ReadDirInfo;\r | |
352 | NewFileIdentifierDesc = NULL;\r | |
353 | NewFileEntryData = NULL;\r | |
354 | \r | |
355 | Parent = _PARENT_FILE (PrivFileData);\r | |
356 | \r | |
357 | Status = EFI_VOLUME_CORRUPTED;\r | |
358 | \r | |
359 | if (IS_FID_NORMAL_FILE (Parent->FileIdentifierDesc)) {\r | |
360 | if (PrivFileData->FilePosition > PrivFileData->FileSize) {\r | |
361 | //\r | |
362 | // File's position is beyond the EOF\r | |
363 | //\r | |
364 | Status = EFI_DEVICE_ERROR;\r | |
365 | goto Error_File_Beyond_The_Eof;\r | |
366 | }\r | |
367 | \r | |
368 | if (PrivFileData->FilePosition == PrivFileData->FileSize) {\r | |
369 | *BufferSize = 0;\r | |
370 | Status = EFI_SUCCESS;\r | |
371 | goto Done;\r | |
372 | }\r | |
373 | \r | |
374 | BufferSizeUint64 = *BufferSize;\r | |
375 | \r | |
376 | Status = ReadFileData (\r | |
377 | BlockIo,\r | |
378 | DiskIo,\r | |
379 | Volume,\r | |
380 | Parent,\r | |
381 | PrivFileData->FileSize,\r | |
382 | &PrivFileData->FilePosition,\r | |
383 | Buffer,\r | |
384 | &BufferSizeUint64\r | |
385 | );\r | |
386 | ASSERT (BufferSizeUint64 <= MAX_UINTN);\r | |
387 | *BufferSize = (UINTN)BufferSizeUint64;\r | |
388 | } else if (IS_FID_DIRECTORY_FILE (Parent->FileIdentifierDesc)) {\r | |
389 | if (ReadDirInfo->FidOffset == 0 && PrivFileData->FilePosition > 0) {\r | |
390 | Status = EFI_DEVICE_ERROR;\r | |
391 | *BufferSize = 0;\r | |
392 | goto Done;\r | |
393 | }\r | |
394 | \r | |
395 | for (;;) {\r | |
396 | Status = ReadDirectoryEntry (\r | |
397 | BlockIo,\r | |
398 | DiskIo,\r | |
399 | Volume,\r | |
400 | &Parent->FileIdentifierDesc->Icb,\r | |
401 | Parent->FileEntry,\r | |
402 | ReadDirInfo,\r | |
403 | &NewFileIdentifierDesc\r | |
404 | );\r | |
405 | if (EFI_ERROR (Status)) {\r | |
406 | if (Status == EFI_DEVICE_ERROR) {\r | |
407 | FreePool (ReadDirInfo->DirectoryData);\r | |
408 | ZeroMem ((VOID *)ReadDirInfo, sizeof (UDF_READ_DIRECTORY_INFO));\r | |
409 | \r | |
410 | *BufferSize = 0;\r | |
411 | Status = EFI_SUCCESS;\r | |
412 | }\r | |
413 | \r | |
414 | goto Done;\r | |
415 | }\r | |
5fb22f59 HW |
416 | //\r |
417 | // After calling function ReadDirectoryEntry(), if 'NewFileIdentifierDesc'\r | |
418 | // is NULL, then the 'Status' must be EFI_OUT_OF_RESOURCES. Hence, if the\r | |
419 | // code reaches here, 'NewFileIdentifierDesc' must be not NULL.\r | |
420 | //\r | |
421 | // The ASSERT here is for addressing a false positive NULL pointer\r | |
422 | // dereference issue raised from static analysis.\r | |
423 | //\r | |
424 | ASSERT (NewFileIdentifierDesc != NULL);\r | |
99c9b949 PA |
425 | \r |
426 | if (!IS_FID_PARENT_FILE (NewFileIdentifierDesc)) {\r | |
427 | break;\r | |
428 | }\r | |
429 | \r | |
430 | FreePool ((VOID *)NewFileIdentifierDesc);\r | |
431 | }\r | |
432 | \r | |
433 | Status = FindFileEntry (\r | |
434 | BlockIo,\r | |
435 | DiskIo,\r | |
436 | Volume,\r | |
437 | &NewFileIdentifierDesc->Icb,\r | |
438 | &NewFileEntryData\r | |
439 | );\r | |
440 | if (EFI_ERROR (Status)) {\r | |
441 | goto Error_Find_Fe;\r | |
442 | }\r | |
3fa40d58 | 443 | ASSERT (NewFileEntryData != NULL);\r |
99c9b949 | 444 | \r |
baaa3cee | 445 | if (FE_ICB_FILE_TYPE (NewFileEntryData) == UdfFileEntrySymlink) {\r |
99c9b949 PA |
446 | Status = ResolveSymlink (\r |
447 | BlockIo,\r | |
448 | DiskIo,\r | |
449 | Volume,\r | |
450 | Parent,\r | |
451 | NewFileEntryData,\r | |
452 | &FoundFile\r | |
453 | );\r | |
454 | if (EFI_ERROR (Status)) {\r | |
455 | goto Error_Resolve_Symlink;\r | |
456 | }\r | |
457 | \r | |
458 | FreePool ((VOID *)NewFileEntryData);\r | |
459 | NewFileEntryData = FoundFile.FileEntry;\r | |
460 | \r | |
b9ae1705 | 461 | Status = GetFileNameFromFid (NewFileIdentifierDesc, ARRAY_SIZE (FileName), FileName);\r |
99c9b949 PA |
462 | if (EFI_ERROR (Status)) {\r |
463 | FreePool ((VOID *)FoundFile.FileIdentifierDesc);\r | |
464 | goto Error_Get_FileName;\r | |
465 | }\r | |
466 | \r | |
467 | FreePool ((VOID *)NewFileIdentifierDesc);\r | |
468 | NewFileIdentifierDesc = FoundFile.FileIdentifierDesc;\r | |
469 | } else {\r | |
470 | FoundFile.FileIdentifierDesc = NewFileIdentifierDesc;\r | |
471 | FoundFile.FileEntry = NewFileEntryData;\r | |
472 | \r | |
b9ae1705 | 473 | Status = GetFileNameFromFid (FoundFile.FileIdentifierDesc, ARRAY_SIZE (FileName), FileName);\r |
99c9b949 PA |
474 | if (EFI_ERROR (Status)) {\r |
475 | goto Error_Get_FileName;\r | |
476 | }\r | |
477 | }\r | |
478 | \r | |
479 | Status = GetFileSize (\r | |
480 | BlockIo,\r | |
481 | DiskIo,\r | |
482 | Volume,\r | |
483 | &FoundFile,\r | |
484 | &FileSize\r | |
485 | );\r | |
486 | if (EFI_ERROR (Status)) {\r | |
487 | goto Error_Get_File_Size;\r | |
488 | }\r | |
489 | \r | |
490 | Status = SetFileInfo (\r | |
491 | &FoundFile,\r | |
492 | FileSize,\r | |
493 | FileName,\r | |
494 | BufferSize,\r | |
495 | Buffer\r | |
496 | );\r | |
497 | if (EFI_ERROR (Status)) {\r | |
498 | goto Error_Set_File_Info;\r | |
499 | }\r | |
500 | \r | |
501 | PrivFileData->FilePosition++;\r | |
502 | Status = EFI_SUCCESS;\r | |
503 | } else if (IS_FID_DELETED_FILE (Parent->FileIdentifierDesc)) {\r | |
11941d3b HW |
504 | //\r |
505 | // Code should never reach here.\r | |
506 | //\r | |
507 | ASSERT (FALSE);\r | |
99c9b949 PA |
508 | Status = EFI_DEVICE_ERROR;\r |
509 | }\r | |
510 | \r | |
511 | Error_Set_File_Info:\r | |
512 | Error_Get_File_Size:\r | |
513 | Error_Get_FileName:\r | |
514 | Error_Resolve_Symlink:\r | |
515 | if (NewFileEntryData != NULL) {\r | |
516 | FreePool (NewFileEntryData);\r | |
517 | }\r | |
518 | \r | |
519 | Error_Find_Fe:\r | |
520 | if (NewFileIdentifierDesc != NULL) {\r | |
521 | FreePool ((VOID *)NewFileIdentifierDesc);\r | |
522 | }\r | |
523 | \r | |
524 | Done:\r | |
525 | Error_File_Beyond_The_Eof:\r | |
526 | Error_Invalid_Params:\r | |
527 | gBS->RestoreTPL (OldTpl);\r | |
528 | \r | |
529 | return Status;\r | |
530 | }\r | |
531 | \r | |
532 | /**\r | |
533 | Close the file handle.\r | |
534 | \r | |
535 | @param This Protocol instance pointer.\r | |
536 | \r | |
537 | @retval EFI_SUCCESS The file was closed.\r | |
538 | \r | |
539 | **/\r | |
540 | EFI_STATUS\r | |
541 | EFIAPI\r | |
542 | UdfClose (\r | |
543 | IN EFI_FILE_PROTOCOL *This\r | |
544 | )\r | |
545 | {\r | |
546 | EFI_TPL OldTpl;\r | |
547 | EFI_STATUS Status;\r | |
548 | PRIVATE_UDF_FILE_DATA *PrivFileData;\r | |
99c9b949 PA |
549 | \r |
550 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
551 | \r | |
552 | Status = EFI_SUCCESS;\r | |
553 | \r | |
554 | if (This == NULL) {\r | |
555 | Status = EFI_INVALID_PARAMETER;\r | |
556 | goto Exit;\r | |
557 | }\r | |
558 | \r | |
559 | PrivFileData = PRIVATE_UDF_FILE_DATA_FROM_THIS (This);\r | |
560 | \r | |
99c9b949 PA |
561 | if (!PrivFileData->IsRootDirectory) {\r |
562 | CleanupFileInformation (&PrivFileData->File);\r | |
563 | \r | |
564 | if (PrivFileData->ReadDirInfo.DirectoryData != NULL) {\r | |
565 | FreePool (PrivFileData->ReadDirInfo.DirectoryData);\r | |
566 | }\r | |
567 | }\r | |
568 | \r | |
99c9b949 PA |
569 | FreePool ((VOID *)PrivFileData);\r |
570 | \r | |
571 | Exit:\r | |
572 | gBS->RestoreTPL (OldTpl);\r | |
573 | \r | |
574 | return Status;\r | |
575 | }\r | |
576 | \r | |
577 | /**\r | |
578 | Close and delete the file handle.\r | |
579 | \r | |
580 | @param This Protocol instance pointer.\r | |
581 | \r | |
582 | @retval EFI_SUCCESS The file was closed and deleted.\r | |
583 | @retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not\r | |
584 | deleted.\r | |
585 | \r | |
586 | **/\r | |
587 | EFI_STATUS\r | |
588 | EFIAPI\r | |
589 | UdfDelete (\r | |
590 | IN EFI_FILE_PROTOCOL *This\r | |
591 | )\r | |
592 | {\r | |
593 | PRIVATE_UDF_FILE_DATA *PrivFileData;\r | |
594 | \r | |
595 | if (This == NULL) {\r | |
596 | return EFI_INVALID_PARAMETER;\r | |
597 | }\r | |
598 | \r | |
599 | PrivFileData = PRIVATE_UDF_FILE_DATA_FROM_THIS (This);\r | |
600 | \r | |
601 | (VOID)PrivFileData->FileIo.Close(This);\r | |
602 | \r | |
603 | return EFI_WARN_DELETE_FAILURE;\r | |
604 | }\r | |
605 | \r | |
606 | /**\r | |
607 | Write data to a file.\r | |
608 | \r | |
609 | @param This Protocol instance pointer.\r | |
610 | @param BufferSize On input size of buffer, on output amount of data in\r | |
611 | buffer.\r | |
612 | @param Buffer The buffer in which data to write.\r | |
613 | \r | |
614 | @retval EFI_SUCCESS Data was written.\r | |
615 | @retval EFI_UNSUPPORTED Writes to Open directory are not supported.\r | |
616 | @retval EFI_NO_MEDIA The device has no media.\r | |
617 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
618 | @retval EFI_DEVICE_ERROR An attempt was made to write to a deleted file.\r | |
619 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
620 | @retval EFI_WRITE_PROTECTED The device is write protected.\r | |
621 | @retval EFI_ACCESS_DENIED The file was open for read only.\r | |
622 | @retval EFI_VOLUME_FULL The volume is full.\r | |
623 | \r | |
624 | **/\r | |
625 | EFI_STATUS\r | |
626 | EFIAPI\r | |
627 | UdfWrite (\r | |
628 | IN EFI_FILE_PROTOCOL *This,\r | |
629 | IN OUT UINTN *BufferSize,\r | |
630 | IN VOID *Buffer\r | |
631 | )\r | |
632 | {\r | |
633 | return EFI_UNSUPPORTED;\r | |
634 | }\r | |
635 | \r | |
636 | /**\r | |
637 | Get file's current position.\r | |
638 | \r | |
639 | @param This Protocol instance pointer.\r | |
640 | @param Position Byte position from the start of the file.\r | |
641 | \r | |
642 | @retval EFI_SUCCESS Position was updated.\r | |
643 | @retval EFI_UNSUPPORTED Seek request for directories is not valid.\r | |
644 | \r | |
645 | **/\r | |
646 | EFI_STATUS\r | |
647 | EFIAPI\r | |
648 | UdfGetPosition (\r | |
649 | IN EFI_FILE_PROTOCOL *This,\r | |
650 | OUT UINT64 *Position\r | |
651 | )\r | |
652 | {\r | |
653 | PRIVATE_UDF_FILE_DATA *PrivFileData;\r | |
654 | \r | |
655 | if (This == NULL || Position == NULL) {\r | |
656 | return EFI_INVALID_PARAMETER;\r | |
657 | }\r | |
658 | \r | |
659 | PrivFileData = PRIVATE_UDF_FILE_DATA_FROM_THIS (This);\r | |
660 | \r | |
661 | //\r | |
662 | // As per UEFI spec, if the file handle is a directory, then the current file\r | |
663 | // position has no meaning and the operation is not supported.\r | |
664 | //\r | |
baaa3cee | 665 | if (IS_FID_DIRECTORY_FILE (PrivFileData->File.FileIdentifierDesc)) {\r |
99c9b949 PA |
666 | return EFI_UNSUPPORTED;\r |
667 | }\r | |
668 | \r | |
669 | //\r | |
670 | // The file is not a directory. So, return its position.\r | |
671 | //\r | |
672 | *Position = PrivFileData->FilePosition;\r | |
673 | \r | |
674 | return EFI_SUCCESS;\r | |
675 | }\r | |
676 | \r | |
677 | /**\r | |
678 | Set file's current position.\r | |
679 | \r | |
680 | @param This Protocol instance pointer.\r | |
681 | @param Position Byte position from the start of the file.\r | |
682 | \r | |
683 | @retval EFI_SUCCESS Position was updated.\r | |
684 | @retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open.\r | |
685 | \r | |
686 | **/\r | |
687 | EFI_STATUS\r | |
688 | EFIAPI\r | |
689 | UdfSetPosition (\r | |
690 | IN EFI_FILE_PROTOCOL *This,\r | |
691 | IN UINT64 Position\r | |
692 | )\r | |
693 | {\r | |
694 | EFI_STATUS Status;\r | |
695 | PRIVATE_UDF_FILE_DATA *PrivFileData;\r | |
696 | UDF_FILE_IDENTIFIER_DESCRIPTOR *FileIdentifierDesc;\r | |
697 | \r | |
698 | if (This == NULL) {\r | |
699 | return EFI_INVALID_PARAMETER;\r | |
700 | }\r | |
701 | \r | |
702 | Status = EFI_UNSUPPORTED;\r | |
703 | \r | |
704 | PrivFileData = PRIVATE_UDF_FILE_DATA_FROM_THIS (This);\r | |
705 | \r | |
11b4463e PA |
706 | FileIdentifierDesc = _FILE (PrivFileData)->FileIdentifierDesc;\r |
707 | ASSERT (FileIdentifierDesc != NULL);\r | |
99c9b949 PA |
708 | if (IS_FID_DIRECTORY_FILE (FileIdentifierDesc)) {\r |
709 | //\r | |
710 | // If the file handle is a directory, the _only_ position that may be set is\r | |
711 | // zero. This has no effect of starting the read proccess of the directory\r | |
712 | // entries over.\r | |
713 | //\r | |
714 | if (Position == 0) {\r | |
715 | PrivFileData->FilePosition = Position;\r | |
716 | PrivFileData->ReadDirInfo.FidOffset = 0;\r | |
717 | Status = EFI_SUCCESS;\r | |
718 | }\r | |
719 | } else if (IS_FID_NORMAL_FILE (FileIdentifierDesc)) {\r | |
720 | //\r | |
721 | // Seeking to position 0xFFFFFFFFFFFFFFFF causes the current position to be\r | |
722 | // set to the EOF.\r | |
723 | //\r | |
724 | if (Position == 0xFFFFFFFFFFFFFFFF) {\r | |
6df465b2 | 725 | PrivFileData->FilePosition = PrivFileData->FileSize;\r |
99c9b949 PA |
726 | } else {\r |
727 | PrivFileData->FilePosition = Position;\r | |
728 | }\r | |
729 | \r | |
730 | Status = EFI_SUCCESS;\r | |
731 | }\r | |
732 | \r | |
733 | return Status;\r | |
734 | }\r | |
735 | \r | |
736 | /**\r | |
737 | Get information about a file.\r | |
738 | \r | |
739 | @param This Protocol instance pointer.\r | |
740 | @param InformationType Type of information to return in Buffer.\r | |
741 | @param BufferSize On input size of buffer, on output amount of data in\r | |
742 | buffer.\r | |
743 | @param Buffer The buffer to return data.\r | |
744 | \r | |
745 | @retval EFI_SUCCESS Data was returned.\r | |
746 | @retval EFI_UNSUPPORTED InformationType is not supported.\r | |
747 | @retval EFI_NO_MEDIA The device has no media.\r | |
748 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
749 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
750 | @retval EFI_WRITE_PROTECTED The device is write protected.\r | |
751 | @retval EFI_ACCESS_DENIED The file was open for read only.\r | |
752 | @retval EFI_BUFFER_TOO_SMALL Buffer was too small; required size returned in\r | |
753 | BufferSize.\r | |
754 | \r | |
755 | **/\r | |
756 | EFI_STATUS\r | |
757 | EFIAPI\r | |
758 | UdfGetInfo (\r | |
759 | IN EFI_FILE_PROTOCOL *This,\r | |
760 | IN EFI_GUID *InformationType,\r | |
761 | IN OUT UINTN *BufferSize,\r | |
762 | OUT VOID *Buffer\r | |
763 | )\r | |
764 | {\r | |
32698a8f HW |
765 | EFI_STATUS Status;\r |
766 | PRIVATE_UDF_FILE_DATA *PrivFileData;\r | |
767 | PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;\r | |
768 | EFI_FILE_SYSTEM_INFO *FileSystemInfo;\r | |
769 | UINTN FileSystemInfoLength;\r | |
770 | UINT64 VolumeSize;\r | |
771 | UINT64 FreeSpaceSize;\r | |
772 | EFI_FILE_SYSTEM_VOLUME_LABEL *FileSystemVolumeLabel;\r | |
773 | UINTN FileSystemVolumeLabelLength;\r | |
774 | CHAR16 VolumeLabel[64];\r | |
99c9b949 PA |
775 | \r |
776 | if (This == NULL || InformationType == NULL || BufferSize == NULL ||\r | |
777 | (*BufferSize != 0 && Buffer == NULL)) {\r | |
778 | return EFI_INVALID_PARAMETER;\r | |
779 | }\r | |
780 | \r | |
781 | PrivFileData = PRIVATE_UDF_FILE_DATA_FROM_THIS (This);\r | |
782 | \r | |
783 | PrivFsData = PRIVATE_UDF_SIMPLE_FS_DATA_FROM_THIS (PrivFileData->SimpleFs);\r | |
784 | \r | |
785 | Status = EFI_UNSUPPORTED;\r | |
786 | \r | |
787 | if (CompareGuid (InformationType, &gEfiFileInfoGuid)) {\r | |
788 | Status = SetFileInfo (\r | |
789 | _FILE (PrivFileData),\r | |
790 | PrivFileData->FileSize,\r | |
791 | PrivFileData->FileName,\r | |
792 | BufferSize,\r | |
793 | Buffer\r | |
794 | );\r | |
795 | } else if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid)) {\r | |
32698a8f HW |
796 | Status = GetVolumeLabel (&PrivFsData->Volume, ARRAY_SIZE (VolumeLabel), VolumeLabel);\r |
797 | if (EFI_ERROR (Status)) {\r | |
798 | return Status;\r | |
b9ae1705 | 799 | }\r |
99c9b949 PA |
800 | \r |
801 | FileSystemInfoLength = StrSize (VolumeLabel) +\r | |
802 | sizeof (EFI_FILE_SYSTEM_INFO);\r | |
803 | if (*BufferSize < FileSystemInfoLength) {\r | |
804 | *BufferSize = FileSystemInfoLength;\r | |
805 | return EFI_BUFFER_TOO_SMALL;\r | |
806 | }\r | |
807 | \r | |
808 | FileSystemInfo = (EFI_FILE_SYSTEM_INFO *)Buffer;\r | |
b9ae1705 HW |
809 | StrCpyS (\r |
810 | FileSystemInfo->VolumeLabel,\r | |
32698a8f | 811 | (*BufferSize - SIZE_OF_EFI_FILE_SYSTEM_INFO) / sizeof (CHAR16),\r |
b9ae1705 HW |
812 | VolumeLabel\r |
813 | );\r | |
99c9b949 PA |
814 | Status = GetVolumeSize (\r |
815 | PrivFsData->BlockIo,\r | |
816 | PrivFsData->DiskIo,\r | |
817 | &PrivFsData->Volume,\r | |
818 | &VolumeSize,\r | |
819 | &FreeSpaceSize\r | |
820 | );\r | |
821 | if (EFI_ERROR (Status)) {\r | |
822 | return Status;\r | |
823 | }\r | |
824 | \r | |
825 | FileSystemInfo->Size = FileSystemInfoLength;\r | |
826 | FileSystemInfo->ReadOnly = TRUE;\r | |
827 | FileSystemInfo->BlockSize =\r | |
baaa3cee | 828 | PrivFsData->Volume.LogicalVolDesc.LogicalBlockSize;\r |
99c9b949 PA |
829 | FileSystemInfo->VolumeSize = VolumeSize;\r |
830 | FileSystemInfo->FreeSpace = FreeSpaceSize;\r | |
831 | \r | |
832 | *BufferSize = FileSystemInfoLength;\r | |
833 | Status = EFI_SUCCESS;\r | |
32698a8f HW |
834 | } else if (CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid)) {\r |
835 | Status = GetVolumeLabel (&PrivFsData->Volume, ARRAY_SIZE (VolumeLabel), VolumeLabel);\r | |
836 | if (EFI_ERROR (Status)) {\r | |
837 | return Status;\r | |
838 | }\r | |
839 | \r | |
840 | FileSystemVolumeLabelLength = StrSize (VolumeLabel) +\r | |
841 | sizeof (EFI_FILE_SYSTEM_VOLUME_LABEL);\r | |
842 | if (*BufferSize < FileSystemVolumeLabelLength) {\r | |
843 | *BufferSize = FileSystemVolumeLabelLength;\r | |
844 | return EFI_BUFFER_TOO_SMALL;\r | |
845 | }\r | |
846 | \r | |
847 | FileSystemVolumeLabel = (EFI_FILE_SYSTEM_VOLUME_LABEL *)Buffer;\r | |
848 | StrCpyS (\r | |
849 | FileSystemVolumeLabel->VolumeLabel,\r | |
850 | (*BufferSize - SIZE_OF_EFI_FILE_SYSTEM_VOLUME_LABEL) / sizeof (CHAR16),\r | |
851 | VolumeLabel\r | |
852 | );\r | |
853 | Status = EFI_SUCCESS;\r | |
99c9b949 PA |
854 | }\r |
855 | \r | |
856 | return Status;\r | |
857 | }\r | |
858 | \r | |
859 | /**\r | |
860 | Set information about a file.\r | |
861 | \r | |
077f8c43 | 862 | @param This Protocol instance pointer.\r |
99c9b949 PA |
863 | @param InformationType Type of information in Buffer.\r |
864 | @param BufferSize Size of buffer.\r | |
865 | @param Buffer The data to write.\r | |
866 | \r | |
867 | @retval EFI_SUCCESS Data was set.\r | |
868 | @retval EFI_UNSUPPORTED InformationType is not supported.\r | |
869 | @retval EFI_NO_MEDIA The device has no media.\r | |
870 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
871 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
872 | @retval EFI_WRITE_PROTECTED The device is write protected.\r | |
873 | @retval EFI_ACCESS_DENIED The file was open for read only.\r | |
874 | \r | |
875 | **/\r | |
876 | EFI_STATUS\r | |
877 | EFIAPI\r | |
878 | UdfSetInfo (\r | |
879 | IN EFI_FILE_PROTOCOL *This,\r | |
880 | IN EFI_GUID *InformationType,\r | |
881 | IN UINTN BufferSize,\r | |
882 | IN VOID *Buffer\r | |
883 | )\r | |
884 | {\r | |
885 | return EFI_WRITE_PROTECTED;\r | |
886 | }\r | |
887 | \r | |
888 | /**\r | |
889 | Flush data back for the file handle.\r | |
890 | \r | |
891 | @param This Protocol instance pointer.\r | |
892 | \r | |
893 | @retval EFI_SUCCESS Data was flushed.\r | |
894 | @retval EFI_UNSUPPORTED Writes to Open directory are not supported.\r | |
895 | @retval EFI_NO_MEDIA The device has no media.\r | |
896 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
897 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
898 | @retval EFI_WRITE_PROTECTED The device is write protected.\r | |
899 | @retval EFI_ACCESS_DENIED The file was open for read only.\r | |
900 | @retval EFI_VOLUME_FULL The volume is full.\r | |
901 | \r | |
902 | **/\r | |
903 | EFI_STATUS\r | |
904 | EFIAPI\r | |
905 | UdfFlush (\r | |
906 | IN EFI_FILE_PROTOCOL *This\r | |
907 | )\r | |
908 | {\r | |
909 | return EFI_WRITE_PROTECTED;\r | |
910 | }\r |