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94e0955d OM |
1 | /** @file\r |
2 | *\r | |
3 | * Copyright (c) 2012-2014, ARM Limited. All rights reserved.\r | |
4 | *\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 "BootMonFsInternal.h"\r | |
16 | \r | |
17 | EFIAPI\r | |
18 | EFI_STATUS\r | |
19 | OpenBootMonFsOpenVolume (\r | |
20 | IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,\r | |
21 | OUT EFI_FILE_PROTOCOL **Root\r | |
22 | )\r | |
23 | {\r | |
24 | BOOTMON_FS_INSTANCE *Instance;\r | |
25 | \r | |
26 | Instance = BOOTMON_FS_FROM_FS_THIS (This);\r | |
27 | if (Instance == NULL) {\r | |
28 | return EFI_DEVICE_ERROR;\r | |
29 | }\r | |
30 | \r | |
95204533 RC |
31 | Instance->RootFile->Info->Attribute = EFI_FILE_READ_ONLY | EFI_FILE_DIRECTORY;\r |
32 | \r | |
94e0955d OM |
33 | *Root = &Instance->RootFile->File;\r |
34 | \r | |
35 | return EFI_SUCCESS;\r | |
36 | }\r | |
37 | \r | |
38 | UINT32\r | |
39 | BootMonFsGetImageLength (\r | |
40 | IN BOOTMON_FS_FILE *File\r | |
41 | )\r | |
42 | {\r | |
43 | UINT32 Index;\r | |
44 | UINT32 FileSize;\r | |
45 | LIST_ENTRY *RegionToFlushLink;\r | |
46 | BOOTMON_FS_FILE_REGION *Region;\r | |
47 | \r | |
48 | FileSize = 0;\r | |
49 | \r | |
50 | // Look at all Flash areas to determine file size\r | |
51 | for (Index = 0; Index < HW_IMAGE_DESCRIPTION_REGION_MAX; Index++) {\r | |
52 | FileSize += File->HwDescription.Region[Index].Size;\r | |
53 | }\r | |
54 | \r | |
55 | // Add the regions that have not been flushed yet\r | |
56 | for (RegionToFlushLink = GetFirstNode (&File->RegionToFlushLink);\r | |
57 | !IsNull (&File->RegionToFlushLink, RegionToFlushLink);\r | |
58 | RegionToFlushLink = GetNextNode (&File->RegionToFlushLink, RegionToFlushLink)\r | |
59 | )\r | |
60 | {\r | |
61 | Region = (BOOTMON_FS_FILE_REGION*)RegionToFlushLink;\r | |
62 | if (Region->Offset + Region->Size > FileSize) {\r | |
63 | FileSize += Region->Offset + Region->Size;\r | |
64 | }\r | |
65 | }\r | |
66 | \r | |
67 | return FileSize;\r | |
68 | }\r | |
69 | \r | |
70 | UINTN\r | |
71 | BootMonFsGetPhysicalSize (\r | |
72 | IN BOOTMON_FS_FILE* File\r | |
73 | )\r | |
74 | {\r | |
75 | // Return 0 for files that haven't yet been flushed to media\r | |
76 | if (File->HwDescription.RegionCount == 0) {\r | |
77 | return 0;\r | |
78 | }\r | |
79 | \r | |
80 | return ((File->HwDescription.BlockEnd - File->HwDescription.BlockStart) + 1 )\r | |
81 | * File->Instance->Media->BlockSize;\r | |
82 | }\r | |
83 | \r | |
84 | EFIAPI\r | |
85 | EFI_STATUS\r | |
86 | BootMonFsSetDirPosition (\r | |
87 | IN EFI_FILE_PROTOCOL *This,\r | |
88 | IN UINT64 Position\r | |
89 | )\r | |
90 | {\r | |
91 | BOOTMON_FS_FILE *File;\r | |
92 | \r | |
93 | File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);\r | |
94 | if (File == NULL) {\r | |
95 | return EFI_INVALID_PARAMETER;\r | |
96 | }\r | |
97 | \r | |
98 | // UEFI Spec section 12.5:\r | |
99 | // "The seek request for nonzero is not valid on open directories."\r | |
100 | if (Position != 0) {\r | |
101 | return EFI_UNSUPPORTED;\r | |
102 | }\r | |
103 | File->Position = Position;\r | |
104 | \r | |
105 | return EFI_SUCCESS;\r | |
106 | }\r | |
107 | \r | |
108 | EFI_STATUS\r | |
109 | BootMonFsOpenDirectory (\r | |
110 | OUT EFI_FILE_PROTOCOL **NewHandle,\r | |
111 | IN CHAR16 *FileName,\r | |
112 | IN BOOTMON_FS_INSTANCE *Volume\r | |
113 | )\r | |
114 | {\r | |
115 | ASSERT(0);\r | |
116 | \r | |
117 | return EFI_UNSUPPORTED;\r | |
118 | }\r | |
95204533 RC |
119 | \r |
120 | STATIC\r | |
94e0955d OM |
121 | EFI_STATUS\r |
122 | GetFileSystemVolumeLabelInfo (\r | |
123 | IN BOOTMON_FS_INSTANCE *Instance,\r | |
124 | IN OUT UINTN *BufferSize,\r | |
125 | OUT VOID *Buffer\r | |
126 | )\r | |
127 | {\r | |
128 | UINTN Size;\r | |
129 | EFI_FILE_SYSTEM_VOLUME_LABEL *Label;\r | |
130 | EFI_STATUS Status;\r | |
131 | \r | |
132 | Label = Buffer;\r | |
133 | \r | |
134 | // Value returned by StrSize includes null terminator.\r | |
135 | Size = SIZE_OF_EFI_FILE_SYSTEM_VOLUME_LABEL\r | |
136 | + StrSize (Instance->FsInfo.VolumeLabel);\r | |
137 | \r | |
138 | if (*BufferSize >= Size) {\r | |
139 | CopyMem (&Label->VolumeLabel, &Instance->FsInfo.VolumeLabel, Size);\r | |
140 | Status = EFI_SUCCESS;\r | |
141 | } else {\r | |
142 | Status = EFI_BUFFER_TOO_SMALL;\r | |
143 | }\r | |
144 | *BufferSize = Size;\r | |
145 | return Status;\r | |
146 | }\r | |
147 | \r | |
148 | // Helper function that calculates a rough "free space" by:\r | |
149 | // - Taking the media size\r | |
150 | // - Subtracting the sum of all file sizes\r | |
151 | // - Subtracting the block size times the number of files\r | |
152 | // (To account for the blocks containing the HW_IMAGE_INFO\r | |
153 | STATIC\r | |
154 | UINT64\r | |
155 | ComputeFreeSpace (\r | |
156 | IN BOOTMON_FS_INSTANCE *Instance\r | |
157 | )\r | |
158 | {\r | |
159 | LIST_ENTRY *FileLink;\r | |
160 | UINT64 FileSizeSum;\r | |
161 | UINT64 MediaSize;\r | |
162 | UINTN NumFiles;\r | |
163 | EFI_BLOCK_IO_MEDIA *Media;\r | |
164 | BOOTMON_FS_FILE *File;\r | |
165 | \r | |
166 | Media = Instance->BlockIo->Media;\r | |
167 | MediaSize = Media->BlockSize * (Media->LastBlock + 1);\r | |
168 | \r | |
169 | NumFiles = 0;\r | |
170 | FileSizeSum = 0;\r | |
171 | for (FileLink = GetFirstNode (&Instance->RootFile->Link);\r | |
172 | !IsNull (&Instance->RootFile->Link, FileLink);\r | |
173 | FileLink = GetNextNode (&Instance->RootFile->Link, FileLink)\r | |
174 | )\r | |
175 | {\r | |
176 | File = BOOTMON_FS_FILE_FROM_LINK_THIS (FileLink);\r | |
177 | FileSizeSum += BootMonFsGetImageLength (File);\r | |
178 | \r | |
179 | NumFiles++;\r | |
180 | }\r | |
181 | \r | |
182 | return MediaSize - (FileSizeSum + (Media->BlockSize + NumFiles));\r | |
183 | }\r | |
184 | \r | |
95204533 | 185 | STATIC\r |
94e0955d OM |
186 | EFI_STATUS\r |
187 | GetFilesystemInfo (\r | |
188 | IN BOOTMON_FS_INSTANCE *Instance,\r | |
189 | IN OUT UINTN *BufferSize,\r | |
190 | OUT VOID *Buffer\r | |
191 | )\r | |
192 | {\r | |
193 | EFI_STATUS Status;\r | |
194 | \r | |
195 | if (*BufferSize >= Instance->FsInfo.Size) {\r | |
196 | Instance->FsInfo.FreeSpace = ComputeFreeSpace (Instance);\r | |
197 | CopyMem (Buffer, &Instance->FsInfo, Instance->FsInfo.Size);\r | |
198 | Status = EFI_SUCCESS;\r | |
199 | } else {\r | |
200 | Status = EFI_BUFFER_TOO_SMALL;\r | |
201 | }\r | |
202 | \r | |
203 | *BufferSize = Instance->FsInfo.Size;\r | |
204 | return Status;\r | |
205 | }\r | |
206 | \r | |
95204533 | 207 | STATIC\r |
94e0955d OM |
208 | EFI_STATUS\r |
209 | GetFileInfo (\r | |
95204533 RC |
210 | IN BOOTMON_FS_INSTANCE *Instance,\r |
211 | IN BOOTMON_FS_FILE *File,\r | |
212 | IN OUT UINTN *BufferSize,\r | |
213 | OUT VOID *Buffer\r | |
94e0955d OM |
214 | )\r |
215 | {\r | |
95204533 RC |
216 | EFI_FILE_INFO *Info;\r |
217 | UINTN ResultSize;\r | |
94e0955d | 218 | \r |
95204533 | 219 | ResultSize = SIZE_OF_EFI_FILE_INFO + StrSize (File->Info->FileName);\r |
94e0955d OM |
220 | \r |
221 | if (*BufferSize < ResultSize) {\r | |
222 | *BufferSize = ResultSize;\r | |
223 | return EFI_BUFFER_TOO_SMALL;\r | |
224 | }\r | |
225 | \r | |
226 | Info = Buffer;\r | |
227 | \r | |
95204533 RC |
228 | CopyMem (Info, File->Info, ResultSize);\r |
229 | // Size of the information\r | |
94e0955d OM |
230 | Info->Size = ResultSize;\r |
231 | \r | |
94e0955d OM |
232 | *BufferSize = ResultSize;\r |
233 | \r | |
234 | return EFI_SUCCESS;\r | |
235 | }\r | |
236 | \r | |
da5daf36 HL |
237 | STATIC\r |
238 | EFI_STATUS\r | |
239 | GetBootMonFsFileInfo (\r | |
240 | IN BOOTMON_FS_INSTANCE *Instance,\r | |
241 | IN BOOTMON_FS_FILE *File,\r | |
242 | IN OUT UINTN *BufferSize,\r | |
243 | OUT VOID *Buffer\r | |
244 | )\r | |
245 | {\r | |
246 | EFI_STATUS Status;\r | |
247 | BOOTMON_FS_FILE_INFO *Info;\r | |
248 | UINTN ResultSize;\r | |
249 | UINTN Index;\r | |
250 | \r | |
251 | if (File == Instance->RootFile) {\r | |
252 | Status = EFI_UNSUPPORTED;\r | |
253 | } else {\r | |
254 | ResultSize = SIZE_OF_BOOTMON_FS_FILE_INFO;\r | |
255 | \r | |
256 | if (*BufferSize < ResultSize) {\r | |
257 | *BufferSize = ResultSize;\r | |
258 | Status = EFI_BUFFER_TOO_SMALL;\r | |
259 | } else {\r | |
260 | Info = Buffer;\r | |
261 | \r | |
262 | // Zero out the structure\r | |
263 | ZeroMem (Info, ResultSize);\r | |
264 | \r | |
265 | // Fill in the structure\r | |
266 | Info->Size = ResultSize;\r | |
267 | \r | |
268 | Info->EntryPoint = File->HwDescription.EntryPoint;\r | |
269 | Info->RegionCount = File->HwDescription.RegionCount;\r | |
270 | for (Index = 0; Index < File->HwDescription.RegionCount; Index++) {\r | |
271 | Info->Region[Index].LoadAddress = File->HwDescription.Region[Index].LoadAddress;\r | |
272 | Info->Region[Index].Size = File->HwDescription.Region[Index].Size;\r | |
273 | Info->Region[Index].Offset = File->HwDescription.Region[Index].Offset;\r | |
274 | Info->Region[Index].Checksum = File->HwDescription.Region[Index].Checksum;\r | |
275 | }\r | |
276 | *BufferSize = ResultSize;\r | |
277 | Status = EFI_SUCCESS;\r | |
278 | }\r | |
279 | }\r | |
280 | \r | |
281 | return Status;\r | |
282 | }\r | |
283 | \r | |
95204533 RC |
284 | /**\r |
285 | Set the name of a file.\r | |
286 | \r | |
287 | This is a helper function for SetFileInfo().\r | |
288 | \r | |
289 | @param[in] Instance A pointer to the description of the volume\r | |
290 | the file belongs to.\r | |
291 | @param[in] File A pointer to the description of the file.\r | |
292 | @param[in] FileName A pointer to the new name of the file.\r | |
293 | \r | |
294 | @retval EFI_SUCCESS The name was set.\r | |
295 | @retval EFI_ACCESS_DENIED An attempt is made to change the name of a file\r | |
296 | to a file that is already present.\r | |
297 | \r | |
298 | **/\r | |
94e0955d OM |
299 | STATIC\r |
300 | EFI_STATUS\r | |
301 | SetFileName (\r | |
95204533 RC |
302 | IN BOOTMON_FS_INSTANCE *Instance,\r |
303 | IN BOOTMON_FS_FILE *File,\r | |
304 | IN CONST CHAR16 *FileName\r | |
94e0955d OM |
305 | )\r |
306 | {\r | |
95204533 RC |
307 | CHAR16 TruncFileName[MAX_NAME_LENGTH];\r |
308 | CHAR8 AsciiFileName[MAX_NAME_LENGTH];\r | |
309 | BOOTMON_FS_FILE *SameFile;\r | |
310 | \r | |
311 | // If the file path start with a \ strip it. The EFI Shell may\r | |
312 | // insert a \ in front of the file name.\r | |
313 | if (FileName[0] == L'\\') {\r | |
314 | FileName++;\r | |
94e0955d OM |
315 | }\r |
316 | \r | |
95204533 RC |
317 | StrnCpy (TruncFileName, FileName, MAX_NAME_LENGTH - 1);\r |
318 | TruncFileName[MAX_NAME_LENGTH - 1] = 0;\r | |
319 | UnicodeStrToAsciiStr (TruncFileName, AsciiFileName);\r | |
320 | \r | |
321 | if (BootMonGetFileFromAsciiFileName (\r | |
322 | File->Instance,\r | |
323 | AsciiFileName,\r | |
324 | &SameFile\r | |
325 | ) != EFI_NOT_FOUND) {\r | |
35d3b52d | 326 | // A file with that name already exists.\r |
95204533 | 327 | return EFI_ACCESS_DENIED;\r |
94e0955d | 328 | } else {\r |
35d3b52d | 329 | // OK, change the filename.\r |
95204533 RC |
330 | AsciiStrToUnicodeStr (AsciiFileName, File->Info->FileName);\r |
331 | return EFI_SUCCESS;\r | |
94e0955d | 332 | }\r |
94e0955d OM |
333 | }\r |
334 | \r | |
95204533 RC |
335 | /**\r |
336 | Set the size of a file.\r | |
337 | \r | |
338 | This is a helper function for SetFileInfo().\r | |
339 | \r | |
340 | @param[in] Instance A pointer to the description of the volume\r | |
341 | the file belongs to.\r | |
342 | @param[in] File A pointer to the description of the file.\r | |
343 | @param[in] NewSize The requested new size for the file.\r | |
344 | \r | |
345 | @retval EFI_SUCCESS The size was set.\r | |
346 | @retval EFI_OUT_OF_RESOURCES An allocation needed to process the request failed.\r | |
347 | \r | |
348 | **/\r | |
94e0955d OM |
349 | STATIC\r |
350 | EFI_STATUS\r | |
351 | SetFileSize (\r | |
95204533 RC |
352 | IN BOOTMON_FS_INSTANCE *Instance,\r |
353 | IN BOOTMON_FS_FILE *BootMonFsFile,\r | |
354 | IN UINTN NewSize\r | |
94e0955d OM |
355 | )\r |
356 | {\r | |
95204533 RC |
357 | EFI_STATUS Status;\r |
358 | UINT32 OldSize;\r | |
359 | LIST_ENTRY *RegionToFlushLink;\r | |
360 | LIST_ENTRY *NextRegionToFlushLink;\r | |
361 | BOOTMON_FS_FILE_REGION *Region;\r | |
362 | EFI_FILE_PROTOCOL *File;\r | |
363 | CHAR8 *Buffer;\r | |
364 | UINTN BufferSize;\r | |
365 | UINT64 StoredPosition;\r | |
94e0955d | 366 | \r |
95204533 | 367 | OldSize = BootMonFsFile->Info->FileSize;\r |
94e0955d | 368 | \r |
95204533 RC |
369 | //\r |
370 | // In case of file truncation, force the regions waiting for writing to\r | |
371 | // not overflow the new size of the file.\r | |
372 | //\r | |
373 | if (NewSize < OldSize) {\r | |
374 | for (RegionToFlushLink = GetFirstNode (&BootMonFsFile->RegionToFlushLink);\r | |
375 | !IsNull (&BootMonFsFile->RegionToFlushLink, RegionToFlushLink);\r | |
376 | )\r | |
377 | {\r | |
378 | NextRegionToFlushLink = GetNextNode (&BootMonFsFile->RegionToFlushLink, RegionToFlushLink);\r | |
379 | Region = (BOOTMON_FS_FILE_REGION*)RegionToFlushLink;\r | |
380 | if (Region->Offset > NewSize) {\r | |
381 | RemoveEntryList (RegionToFlushLink);\r | |
382 | FreePool (Region->Buffer);\r | |
383 | FreePool (Region);\r | |
384 | } else {\r | |
385 | Region->Size = MIN (Region->Size, NewSize - Region->Offset);\r | |
386 | }\r | |
387 | RegionToFlushLink = NextRegionToFlushLink;\r | |
388 | }\r | |
94e0955d | 389 | \r |
95204533 | 390 | } else if (NewSize > OldSize) {\r |
94e0955d OM |
391 | // Increasing a file's size is potentially complicated as it may require\r |
392 | // moving the image description on media. The simplest way to do it is to\r | |
393 | // seek past the end of the file (which is valid in UEFI) and perform a\r | |
394 | // Write.\r | |
95204533 | 395 | File = &BootMonFsFile->File;\r |
94e0955d OM |
396 | \r |
397 | // Save position\r | |
398 | Status = File->GetPosition (File, &StoredPosition);\r | |
399 | if (EFI_ERROR (Status)) {\r | |
400 | return Status;\r | |
401 | }\r | |
95204533 RC |
402 | // Set position at the end of the file\r |
403 | Status = File->SetPosition (File, OldSize);\r | |
94e0955d OM |
404 | if (EFI_ERROR (Status)) {\r |
405 | return Status;\r | |
406 | }\r | |
95204533 RC |
407 | \r |
408 | BufferSize = NewSize - OldSize;\r | |
409 | Buffer = AllocateZeroPool (BufferSize);\r | |
410 | if (Buffer == NULL) {\r | |
411 | return EFI_OUT_OF_RESOURCES;\r | |
94e0955d OM |
412 | }\r |
413 | \r | |
95204533 RC |
414 | Status = File->Write (File, &BufferSize, Buffer);\r |
415 | FreePool (Buffer);\r | |
94e0955d OM |
416 | if (EFI_ERROR (Status)) {\r |
417 | return Status;\r | |
418 | }\r | |
419 | \r | |
95204533 RC |
420 | // Restore saved position\r |
421 | Status = File->SetPosition (File, StoredPosition);\r | |
94e0955d OM |
422 | if (EFI_ERROR (Status)) {\r |
423 | return Status;\r | |
424 | }\r | |
425 | }\r | |
95204533 RC |
426 | \r |
427 | BootMonFsFile->Info->FileSize = NewSize;\r | |
428 | \r | |
94e0955d OM |
429 | return EFI_SUCCESS;\r |
430 | }\r | |
431 | \r | |
95204533 RC |
432 | /**\r |
433 | Set information about a file.\r | |
434 | \r | |
435 | @param[in] Instance A pointer to the description of the volume\r | |
436 | the file belongs to.\r | |
437 | @param[in] File A pointer to the description of the file.\r | |
438 | @param[in] Info A pointer to the file information to write.\r | |
439 | \r | |
440 | @retval EFI_SUCCESS The information was set.\r | |
441 | @retval EFI_ACCESS_DENIED An attempt is being made to change the\r | |
442 | EFI_FILE_DIRECTORY Attribute.\r | |
443 | @retval EFI_ACCESS_DENIED The file was opened in read-only mode and an\r | |
444 | attempt is being made to modify a field other\r | |
445 | than Attribute.\r | |
446 | @retval EFI_ACCESS_DENIED An attempt is made to change the name of a file\r | |
447 | to a file that is already present.\r | |
448 | @retval EFI_WRITE_PROTECTED An attempt is being made to modify a read-only\r | |
449 | attribute.\r | |
450 | @retval EFI_OUT_OF_RESOURCES An allocation needed to process the request\r | |
451 | failed.\r | |
452 | \r | |
453 | **/\r | |
454 | STATIC\r | |
94e0955d OM |
455 | EFI_STATUS\r |
456 | SetFileInfo (\r | |
95204533 RC |
457 | IN BOOTMON_FS_INSTANCE *Instance,\r |
458 | IN BOOTMON_FS_FILE *File,\r | |
459 | IN EFI_FILE_INFO *Info\r | |
94e0955d OM |
460 | )\r |
461 | {\r | |
95204533 RC |
462 | EFI_STATUS Status;\r |
463 | BOOLEAN FileSizeIsDifferent;\r | |
464 | BOOLEAN FileNameIsDifferent;\r | |
465 | BOOLEAN TimeIsDifferent;\r | |
94e0955d | 466 | \r |
95204533 RC |
467 | //\r |
468 | // A directory can not be changed to a file and a file can\r | |
469 | // not be changed to a directory.\r | |
470 | //\r | |
471 | if ((Info->Attribute & EFI_FILE_DIRECTORY) !=\r | |
472 | (File->Info->Attribute & EFI_FILE_DIRECTORY) ) {\r | |
473 | return EFI_ACCESS_DENIED;\r | |
474 | }\r | |
94e0955d | 475 | \r |
95204533 RC |
476 | FileSizeIsDifferent = (Info->FileSize != File->Info->FileSize);\r |
477 | FileNameIsDifferent = (StrnCmp (\r | |
478 | Info->FileName,\r | |
479 | File->Info->FileName,\r | |
480 | MAX_NAME_LENGTH - 1\r | |
481 | ) != 0);\r | |
482 | //\r | |
483 | // Check if the CreateTime, LastAccess or ModificationTime\r | |
484 | // have been changed. The file system does not support file\r | |
485 | // timestamps thus the three times in "File->Info" are\r | |
486 | // always equal to zero. The following comparison actually\r | |
487 | // checks if all three times are still equal to 0 or not.\r | |
488 | //\r | |
489 | TimeIsDifferent = CompareMem (\r | |
490 | &Info->CreateTime,\r | |
491 | &File->Info->CreateTime,\r | |
492 | 3 * sizeof (EFI_TIME)\r | |
493 | ) != 0;\r | |
94e0955d | 494 | \r |
95204533 RC |
495 | //\r |
496 | // For a file opened in read-only mode, only the Attribute field can be\r | |
497 | // modified. The root directory open mode is forced to read-only at opening\r | |
498 | // thus the following test protects the root directory to be somehow modified.\r | |
499 | //\r | |
500 | if (File->OpenMode == EFI_FILE_MODE_READ) {\r | |
501 | if (FileSizeIsDifferent || FileNameIsDifferent || TimeIsDifferent) {\r | |
94e0955d OM |
502 | return EFI_ACCESS_DENIED;\r |
503 | }\r | |
95204533 RC |
504 | }\r |
505 | \r | |
506 | if (TimeIsDifferent) {\r | |
507 | return EFI_WRITE_PROTECTED;\r | |
508 | }\r | |
94e0955d | 509 | \r |
95204533 RC |
510 | if (FileSizeIsDifferent) {\r |
511 | Status = SetFileSize (Instance, File, Info->FileSize);\r | |
94e0955d OM |
512 | if (EFI_ERROR (Status)) {\r |
513 | return Status;\r | |
514 | }\r | |
95204533 | 515 | }\r |
94e0955d | 516 | \r |
95204533 RC |
517 | //\r |
518 | // Note down in RAM the Attribute field but we can not\r | |
519 | // ask to store it in flash for the time being.\r | |
520 | //\r | |
521 | File->Info->Attribute = Info->Attribute;\r | |
522 | \r | |
523 | if (FileNameIsDifferent) {\r | |
524 | Status = SetFileName (Instance, File, Info->FileName);\r | |
94e0955d OM |
525 | if (EFI_ERROR (Status)) {\r |
526 | return Status;\r | |
527 | }\r | |
94e0955d | 528 | }\r |
95204533 RC |
529 | \r |
530 | return EFI_SUCCESS;\r | |
94e0955d OM |
531 | }\r |
532 | \r | |
533 | EFIAPI\r | |
534 | EFI_STATUS\r | |
535 | BootMonFsGetInfo (\r | |
536 | IN EFI_FILE_PROTOCOL *This,\r | |
537 | IN EFI_GUID *InformationType,\r | |
538 | IN OUT UINTN *BufferSize,\r | |
539 | OUT VOID *Buffer\r | |
540 | )\r | |
541 | {\r | |
542 | EFI_STATUS Status;\r | |
543 | BOOTMON_FS_FILE *File;\r | |
544 | BOOTMON_FS_INSTANCE *Instance;\r | |
545 | \r | |
95204533 RC |
546 | if ((This == NULL) ||\r |
547 | (InformationType == NULL) ||\r | |
548 | (BufferSize == NULL) ||\r | |
549 | ((Buffer == NULL) && (*BufferSize > 0)) ) {\r | |
550 | return EFI_INVALID_PARAMETER;\r | |
94e0955d OM |
551 | }\r |
552 | \r | |
95204533 RC |
553 | File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);\r |
554 | if (File->Info == NULL) {\r | |
555 | return EFI_INVALID_PARAMETER;\r | |
556 | }\r | |
94e0955d OM |
557 | Instance = File->Instance;\r |
558 | \r | |
559 | // If the instance has not been initialized yet then do it ...\r | |
560 | if (!Instance->Initialized) {\r | |
561 | Status = BootMonFsInitialize (Instance);\r | |
562 | } else {\r | |
563 | Status = EFI_SUCCESS;\r | |
564 | }\r | |
565 | \r | |
566 | if (!EFI_ERROR (Status)) {\r | |
567 | if (CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid)\r | |
568 | != 0) {\r | |
569 | Status = GetFileSystemVolumeLabelInfo (Instance, BufferSize, Buffer);\r | |
570 | } else if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid) != 0) {\r | |
571 | Status = GetFilesystemInfo (Instance, BufferSize, Buffer);\r | |
572 | } else if (CompareGuid (InformationType, &gEfiFileInfoGuid) != 0) {\r | |
573 | Status = GetFileInfo (Instance, File, BufferSize, Buffer);\r | |
da5daf36 HL |
574 | } else if (CompareGuid (InformationType, &gArmBootMonFsFileInfoGuid) != 0) {\r |
575 | Status = GetBootMonFsFileInfo (Instance, File, BufferSize, Buffer);\r | |
94e0955d OM |
576 | } else {\r |
577 | Status = EFI_UNSUPPORTED;\r | |
578 | }\r | |
579 | }\r | |
580 | \r | |
581 | return Status;\r | |
582 | }\r | |
583 | \r | |
95204533 RC |
584 | /**\r |
585 | Set information about a file or a volume.\r | |
586 | \r | |
587 | @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that\r | |
588 | is the file handle the information is for.\r | |
589 | @param[in] InformationType The type identifier for the information being set :\r | |
590 | EFI_FILE_INFO_ID or EFI_FILE_SYSTEM_INFO_ID or\r | |
591 | EFI_FILE_SYSTEM_VOLUME_LABEL_ID\r | |
592 | @param[in] BufferSize The size, in bytes, of Buffer.\r | |
593 | @param[in] Buffer A pointer to the data buffer to write. The type of the\r | |
594 | data inside the buffer is indicated by InformationType.\r | |
595 | \r | |
596 | @retval EFI_SUCCESS The information was set.\r | |
597 | @retval EFI_UNSUPPORTED The InformationType is not known.\r | |
598 | @retval EFI_DEVICE_ERROR The last issued semi-hosting operation failed.\r | |
599 | @retval EFI_ACCESS_DENIED An attempt is made to change the name of a file\r | |
600 | to a file that is already present.\r | |
601 | @retval EFI_ACCESS_DENIED An attempt is being made to change the\r | |
602 | EFI_FILE_DIRECTORY Attribute.\r | |
603 | @retval EFI_ACCESS_DENIED InformationType is EFI_FILE_INFO_ID and\r | |
604 | the file was opened in read-only mode and an\r | |
605 | attempt is being made to modify a field other\r | |
606 | than Attribute.\r | |
607 | @retval EFI_WRITE_PROTECTED An attempt is being made to modify a read-only\r | |
608 | attribute.\r | |
609 | @retval EFI_BAD_BUFFER_SIZE The size of the buffer is lower than that indicated by\r | |
610 | the data inside the buffer.\r | |
611 | @retval EFI_OUT_OF_RESOURCES A allocation needed to process the request failed.\r | |
612 | @retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.\r | |
613 | \r | |
614 | **/\r | |
94e0955d OM |
615 | EFIAPI\r |
616 | EFI_STATUS\r | |
617 | BootMonFsSetInfo (\r | |
618 | IN EFI_FILE_PROTOCOL *This,\r | |
619 | IN EFI_GUID *InformationType,\r | |
620 | IN UINTN BufferSize,\r | |
621 | IN VOID *Buffer\r | |
622 | )\r | |
623 | {\r | |
95204533 RC |
624 | BOOTMON_FS_FILE *File;\r |
625 | EFI_FILE_INFO *Info;\r | |
626 | EFI_FILE_SYSTEM_INFO *SystemInfo;\r | |
627 | \r | |
628 | if ((This == NULL) ||\r | |
629 | (InformationType == NULL) ||\r | |
630 | (Buffer == NULL) ) {\r | |
631 | return EFI_INVALID_PARAMETER;\r | |
632 | }\r | |
94e0955d OM |
633 | \r |
634 | File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);\r | |
95204533 RC |
635 | if (File->Info == NULL) {\r |
636 | return EFI_INVALID_PARAMETER;\r | |
94e0955d OM |
637 | }\r |
638 | \r | |
95204533 RC |
639 | if (CompareGuid (InformationType, &gEfiFileInfoGuid)) {\r |
640 | Info = Buffer;\r | |
641 | if (Info->Size < (SIZE_OF_EFI_FILE_INFO + StrSize (Info->FileName))) {\r | |
642 | return EFI_INVALID_PARAMETER;\r | |
643 | }\r | |
644 | if (BufferSize < Info->Size) {\r | |
645 | return EFI_BAD_BUFFER_SIZE;\r | |
646 | }\r | |
647 | return (SetFileInfo (File->Instance, File, Info));\r | |
648 | }\r | |
94e0955d | 649 | \r |
95204533 RC |
650 | //\r |
651 | // The only writable field in the other two information types\r | |
652 | // (i.e. EFI_FILE_SYSTEM_INFO and EFI_FILE_SYSTEM_VOLUME_LABEL) is the\r | |
653 | // filesystem volume label. This can be retrieved with GetInfo, but it is\r | |
654 | // hard-coded into this driver, not stored on media.\r | |
655 | //\r | |
656 | \r | |
657 | if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid)) {\r | |
658 | SystemInfo = Buffer;\r | |
659 | if (SystemInfo->Size <\r | |
660 | (SIZE_OF_EFI_FILE_SYSTEM_INFO + StrSize (SystemInfo->VolumeLabel))) {\r | |
661 | return EFI_INVALID_PARAMETER;\r | |
662 | }\r | |
663 | if (BufferSize < SystemInfo->Size) {\r | |
664 | return EFI_BAD_BUFFER_SIZE;\r | |
665 | }\r | |
666 | return EFI_WRITE_PROTECTED;\r | |
94e0955d OM |
667 | }\r |
668 | \r | |
95204533 RC |
669 | if (CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid)) {\r |
670 | return EFI_WRITE_PROTECTED;\r | |
671 | }\r | |
672 | \r | |
673 | return EFI_UNSUPPORTED;\r | |
94e0955d OM |
674 | }\r |
675 | \r | |
676 | EFIAPI\r | |
677 | EFI_STATUS\r | |
678 | BootMonFsReadDirectory (\r | |
679 | IN EFI_FILE_PROTOCOL *This,\r | |
680 | IN OUT UINTN *BufferSize,\r | |
681 | OUT VOID *Buffer\r | |
682 | )\r | |
683 | {\r | |
684 | BOOTMON_FS_INSTANCE *Instance;\r | |
685 | BOOTMON_FS_FILE *RootFile;\r | |
686 | BOOTMON_FS_FILE *File;\r | |
687 | EFI_FILE_INFO *Info;\r | |
688 | UINTN NameSize;\r | |
689 | UINTN ResultSize;\r | |
690 | EFI_STATUS Status;\r | |
691 | UINTN Index;\r | |
692 | \r | |
693 | RootFile = BOOTMON_FS_FILE_FROM_FILE_THIS (This);\r | |
694 | if (RootFile == NULL) {\r | |
695 | return EFI_INVALID_PARAMETER;\r | |
696 | }\r | |
697 | \r | |
698 | Instance = RootFile->Instance;\r | |
699 | Status = BootMonGetFileFromPosition (Instance, RootFile->Position, &File);\r | |
700 | if (EFI_ERROR (Status)) {\r | |
701 | // No more file\r | |
702 | *BufferSize = 0;\r | |
703 | return EFI_SUCCESS;\r | |
704 | }\r | |
705 | \r | |
706 | NameSize = AsciiStrLen (File->HwDescription.Footer.Filename) + 1;\r | |
707 | ResultSize = SIZE_OF_EFI_FILE_INFO + (NameSize * sizeof (CHAR16));\r | |
708 | if (*BufferSize < ResultSize) {\r | |
709 | *BufferSize = ResultSize;\r | |
710 | return EFI_BUFFER_TOO_SMALL;\r | |
711 | }\r | |
712 | \r | |
713 | // Zero out the structure\r | |
714 | Info = Buffer;\r | |
715 | ZeroMem (Info, ResultSize);\r | |
716 | \r | |
717 | // Fill in the structure\r | |
718 | Info->Size = ResultSize;\r | |
719 | Info->FileSize = BootMonFsGetImageLength (File);\r | |
720 | Info->PhysicalSize = BootMonFsGetPhysicalSize (File);\r | |
721 | for (Index = 0; Index < NameSize; Index++) {\r | |
722 | Info->FileName[Index] = File->HwDescription.Footer.Filename[Index];\r | |
723 | }\r | |
724 | \r | |
725 | *BufferSize = ResultSize;\r | |
726 | RootFile->Position++;\r | |
727 | \r | |
728 | return EFI_SUCCESS;\r | |
729 | }\r | |
730 | \r | |
731 | EFIAPI\r | |
732 | EFI_STATUS\r | |
733 | BootMonFsFlushDirectory (\r | |
734 | IN EFI_FILE_PROTOCOL *This\r | |
735 | )\r | |
736 | {\r | |
737 | BOOTMON_FS_FILE *RootFile;\r | |
738 | LIST_ENTRY *ListFiles;\r | |
739 | LIST_ENTRY *Link;\r | |
740 | BOOTMON_FS_FILE *File;\r | |
741 | \r | |
742 | RootFile = BOOTMON_FS_FILE_FROM_FILE_THIS (This);\r | |
743 | if (RootFile == NULL) {\r | |
744 | return EFI_INVALID_PARAMETER;\r | |
745 | }\r | |
746 | \r | |
747 | ListFiles = &RootFile->Link;\r | |
748 | \r | |
749 | if (IsListEmpty (ListFiles)) {\r | |
750 | return EFI_SUCCESS;\r | |
751 | }\r | |
752 | \r | |
753 | //\r | |
754 | // Flush all the files that need to be flushed\r | |
755 | //\r | |
756 | \r | |
757 | // Go through all the list of files to flush them\r | |
758 | for (Link = GetFirstNode (ListFiles);\r | |
759 | !IsNull (ListFiles, Link);\r | |
760 | Link = GetNextNode (ListFiles, Link)\r | |
761 | )\r | |
762 | {\r | |
763 | File = BOOTMON_FS_FILE_FROM_LINK_THIS (Link);\r | |
764 | File->File.Flush (&File->File);\r | |
765 | }\r | |
766 | \r | |
767 | return EFI_SUCCESS;\r | |
768 | }\r |