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Commit | Line | Data |
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99c9b949 PA |
1 | /** @file\r |
2 | Handle on-disk format and volume structures in 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 | 6 | \r |
9d510e61 | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
99c9b949 PA |
8 | **/\r |
9 | \r | |
10 | #include "Udf.h"\r | |
11 | \r | |
3f92b104 HW |
12 | //\r |
13 | // Vendor-Defined Device Path GUID for UDF file system\r | |
14 | //\r | |
1436aea4 | 15 | EFI_GUID gUdfDevPathGuid = EFI_UDF_DEVICE_PATH_GUID;\r |
3f92b104 | 16 | \r |
077f8c43 HW |
17 | /**\r |
18 | Find the anchor volume descriptor pointer.\r | |
19 | \r | |
20 | @param[in] BlockIo BlockIo interface.\r | |
21 | @param[in] DiskIo DiskIo interface.\r | |
22 | @param[out] AnchorPoint Anchor volume descriptor pointer.\r | |
23 | \r | |
24 | @retval EFI_SUCCESS Anchor volume descriptor pointer found.\r | |
25 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
26 | @retval other Anchor volume descriptor pointer not found.\r | |
27 | \r | |
28 | **/\r | |
99c9b949 PA |
29 | EFI_STATUS\r |
30 | FindAnchorVolumeDescriptorPointer (\r | |
31 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
32 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
33 | OUT UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER *AnchorPoint\r | |
34 | )\r | |
35 | {\r | |
baaa3cee PA |
36 | EFI_STATUS Status;\r |
37 | UINT32 BlockSize;\r | |
38 | EFI_LBA EndLBA;\r | |
39 | EFI_LBA DescriptorLBAs[4];\r | |
40 | UINTN Index;\r | |
41 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r | |
99c9b949 | 42 | \r |
1436aea4 MK |
43 | BlockSize = BlockIo->Media->BlockSize;\r |
44 | EndLBA = BlockIo->Media->LastBlock;\r | |
b434f753 BD |
45 | DescriptorLBAs[0] = 256;\r |
46 | DescriptorLBAs[1] = EndLBA - 256;\r | |
47 | DescriptorLBAs[2] = EndLBA;\r | |
48 | DescriptorLBAs[3] = 512;\r | |
49 | \r | |
99c9b949 PA |
50 | for (Index = 0; Index < ARRAY_SIZE (DescriptorLBAs); Index++) {\r |
51 | Status = DiskIo->ReadDisk (\r | |
1436aea4 MK |
52 | DiskIo,\r |
53 | BlockIo->Media->MediaId,\r | |
54 | MultU64x32 (DescriptorLBAs[Index], BlockSize),\r | |
55 | sizeof (UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER),\r | |
56 | (VOID *)AnchorPoint\r | |
57 | );\r | |
99c9b949 PA |
58 | if (EFI_ERROR (Status)) {\r |
59 | return Status;\r | |
60 | }\r | |
baaa3cee PA |
61 | \r |
62 | DescriptorTag = &AnchorPoint->DescriptorTag;\r | |
63 | \r | |
99c9b949 PA |
64 | //\r |
65 | // Check if read LBA has a valid AVDP descriptor.\r | |
66 | //\r | |
baaa3cee | 67 | if (DescriptorTag->TagIdentifier == UdfAnchorVolumeDescriptorPointer) {\r |
99c9b949 PA |
68 | return EFI_SUCCESS;\r |
69 | }\r | |
70 | }\r | |
1436aea4 | 71 | \r |
99c9b949 PA |
72 | //\r |
73 | // No AVDP found.\r | |
74 | //\r | |
75 | return EFI_VOLUME_CORRUPTED;\r | |
76 | }\r | |
77 | \r | |
077f8c43 HW |
78 | /**\r |
79 | Save the content of Logical Volume Descriptors and Partitions Descriptors in\r | |
80 | memory.\r | |
81 | \r | |
82 | @param[in] BlockIo BlockIo interface.\r | |
83 | @param[in] DiskIo DiskIo interface.\r | |
84 | @param[in] AnchorPoint Anchor volume descriptor pointer.\r | |
85 | @param[out] Volume UDF volume information structure.\r | |
86 | \r | |
87 | @retval EFI_SUCCESS The descriptors were saved.\r | |
88 | @retval EFI_OUT_OF_RESOURCES The descriptors were not saved due to lack of\r | |
89 | resources.\r | |
90 | @retval other The descriptors were not saved due to\r | |
91 | ReadDisk error.\r | |
92 | \r | |
93 | **/\r | |
99c9b949 PA |
94 | EFI_STATUS\r |
95 | StartMainVolumeDescriptorSequence (\r | |
96 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
97 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
98 | IN UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER *AnchorPoint,\r | |
99 | OUT UDF_VOLUME_INFO *Volume\r | |
100 | )\r | |
101 | {\r | |
1436aea4 MK |
102 | EFI_STATUS Status;\r |
103 | UINT32 BlockSize;\r | |
104 | UDF_EXTENT_AD *ExtentAd;\r | |
105 | EFI_LBA SeqStartBlock;\r | |
106 | EFI_LBA SeqEndBlock;\r | |
107 | BOOLEAN StopSequence;\r | |
108 | VOID *Buffer;\r | |
109 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r | |
110 | UINT32 LogicalBlockSize;\r | |
baaa3cee PA |
111 | \r |
112 | BlockSize = BlockIo->Media->BlockSize;\r | |
1436aea4 | 113 | ExtentAd = &AnchorPoint->MainVolumeDescriptorSequenceExtent;\r |
99c9b949 PA |
114 | \r |
115 | //\r | |
baaa3cee | 116 | // Allocate buffer for reading disk blocks\r |
99c9b949 | 117 | //\r |
baaa3cee | 118 | Buffer = AllocateZeroPool ((UINTN)BlockSize);\r |
99c9b949 | 119 | if (Buffer == NULL) {\r |
baaa3cee | 120 | return EFI_OUT_OF_RESOURCES;\r |
99c9b949 PA |
121 | }\r |
122 | \r | |
baaa3cee PA |
123 | //\r |
124 | // The logical partition created by Partition driver is relative to the main\r | |
125 | // VDS extent location, so we start the Main Volume Descriptor Sequence at\r | |
126 | // LBA 0.\r | |
127 | //\r | |
128 | // We don't need to check again if we have valid Volume Descriptors here since\r | |
129 | // Partition driver already did.\r | |
130 | //\r | |
131 | SeqStartBlock = 0;\r | |
1436aea4 MK |
132 | SeqEndBlock = SeqStartBlock + DivU64x32 (\r |
133 | (UINT64)ExtentAd->ExtentLength,\r | |
134 | BlockSize\r | |
135 | );\r | |
baaa3cee | 136 | StopSequence = FALSE;\r |
1436aea4 | 137 | for ( ; SeqStartBlock < SeqEndBlock && !StopSequence; SeqStartBlock++) {\r |
baaa3cee PA |
138 | //\r |
139 | // Read disk block\r | |
140 | //\r | |
141 | Status = BlockIo->ReadBlocks (\r | |
1436aea4 MK |
142 | BlockIo,\r |
143 | BlockIo->Media->MediaId,\r | |
144 | SeqStartBlock,\r | |
145 | BlockSize,\r | |
146 | Buffer\r | |
147 | );\r | |
99c9b949 | 148 | if (EFI_ERROR (Status)) {\r |
baaa3cee | 149 | goto Out_Free;\r |
99c9b949 PA |
150 | }\r |
151 | \r | |
baaa3cee PA |
152 | DescriptorTag = Buffer;\r |
153 | \r | |
154 | switch (DescriptorTag->TagIdentifier) {\r | |
1436aea4 MK |
155 | case UdfPartitionDescriptor:\r |
156 | //\r | |
157 | // Save Partition Descriptor\r | |
158 | //\r | |
159 | CopyMem (&Volume->PartitionDesc, Buffer, sizeof (Volume->PartitionDesc));\r | |
160 | break;\r | |
99c9b949 | 161 | \r |
1436aea4 MK |
162 | case UdfLogicalVolumeDescriptor:\r |
163 | //\r | |
164 | // Save Logical Volume Descriptor\r | |
165 | //\r | |
166 | CopyMem (&Volume->LogicalVolDesc, Buffer, sizeof (Volume->LogicalVolDesc));\r | |
167 | break;\r | |
99c9b949 | 168 | \r |
1436aea4 MK |
169 | case UdfTerminatingDescriptor:\r |
170 | StopSequence = TRUE;\r | |
171 | break;\r | |
99c9b949 | 172 | \r |
1436aea4 MK |
173 | default:\r |
174 | ;\r | |
99c9b949 | 175 | }\r |
99c9b949 PA |
176 | }\r |
177 | \r | |
178 | //\r | |
baaa3cee | 179 | // Determine FE (File Entry) size\r |
99c9b949 | 180 | //\r |
baaa3cee | 181 | LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;\r |
99c9b949 | 182 | if (LogicalBlockSize >= UDF_LOGICAL_SECTOR_SIZE) {\r |
baaa3cee | 183 | Volume->FileEntrySize = (UINTN)LogicalBlockSize;\r |
99c9b949 PA |
184 | } else {\r |
185 | Volume->FileEntrySize = UDF_LOGICAL_SECTOR_SIZE;\r | |
186 | }\r | |
187 | \r | |
baaa3cee | 188 | Status = EFI_SUCCESS;\r |
99c9b949 | 189 | \r |
baaa3cee PA |
190 | Out_Free:\r |
191 | //\r | |
192 | // Free block read buffer\r | |
193 | //\r | |
99c9b949 PA |
194 | FreePool (Buffer);\r |
195 | \r | |
99c9b949 PA |
196 | return Status;\r |
197 | }\r | |
198 | \r | |
077f8c43 HW |
199 | /**\r |
200 | Return a Partition Descriptor given a Long Allocation Descriptor. This is\r | |
201 | necessary to calculate the right extent (LongAd) offset which is added up\r | |
202 | with partition's starting location.\r | |
203 | \r | |
204 | @param[in] Volume Volume information pointer.\r | |
205 | @param[in] LongAd Long Allocation Descriptor pointer.\r | |
206 | \r | |
207 | @return A pointer to a Partition Descriptor.\r | |
208 | \r | |
209 | **/\r | |
99c9b949 PA |
210 | UDF_PARTITION_DESCRIPTOR *\r |
211 | GetPdFromLongAd (\r | |
212 | IN UDF_VOLUME_INFO *Volume,\r | |
213 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *LongAd\r | |
214 | )\r | |
215 | {\r | |
216 | UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;\r | |
99c9b949 PA |
217 | UINT16 PartitionNum;\r |
218 | \r | |
baaa3cee | 219 | LogicalVolDesc = &Volume->LogicalVolDesc;\r |
99c9b949 | 220 | \r |
baaa3cee | 221 | switch (LogicalVolDesc->DomainIdentifier.Suffix.Domain.UdfRevision) {\r |
1436aea4 MK |
222 | case 0x0102:\r |
223 | case 0x0150:\r | |
224 | case 0x0200:\r | |
225 | case 0x0201:\r | |
226 | case 0x0250:\r | |
227 | case 0x0260:\r | |
228 | //\r | |
229 | // UDF 1.02 specification:\r | |
230 | //\r | |
231 | // There shall be exactly one prevailing Logical Volume Descriptor recorded\r | |
232 | // per Volume Set. The Partition Maps field shall contain only Type 1\r | |
233 | // Partition Maps.\r | |
234 | //\r | |
235 | // UDF 1.50 through 2.60 specs say:\r | |
236 | //\r | |
237 | // For the purpose of interchange partition maps shall be limited to\r | |
238 | // Partition Map type 1, except type 2 maps as described in the document.\r | |
239 | //\r | |
240 | // NOTE: Only one Type 1 (Physical) Partition is supported. It has been\r | |
241 | // checked already in Partition driver for existence of a single Type 1\r | |
242 | // Partition map. Hence, the 'PartitionReferenceNumber' field (the index\r | |
243 | // used to access Partition Maps data within the Logical Volume Descriptor)\r | |
244 | // in the Long Allocation Descriptor should be 0 to indicate there is only\r | |
245 | // one partition.\r | |
246 | //\r | |
247 | if (LongAd->ExtentLocation.PartitionReferenceNumber != 0) {\r | |
248 | return NULL;\r | |
249 | }\r | |
baaa3cee | 250 | \r |
1436aea4 MK |
251 | //\r |
252 | // Since only one partition, get the first one directly.\r | |
253 | //\r | |
254 | PartitionNum = *(UINT16 *)((UINTN)&LogicalVolDesc->PartitionMaps[4]);\r | |
255 | break;\r | |
256 | \r | |
257 | default:\r | |
258 | //\r | |
259 | // Unsupported UDF revision\r | |
260 | //\r | |
261 | return NULL;\r | |
99c9b949 PA |
262 | }\r |
263 | \r | |
baaa3cee PA |
264 | //\r |
265 | // Check if partition number matches Partition Descriptor found in Main Volume\r | |
266 | // Descriptor Sequence.\r | |
267 | //\r | |
268 | if (Volume->PartitionDesc.PartitionNumber == PartitionNum) {\r | |
269 | return &Volume->PartitionDesc;\r | |
99c9b949 PA |
270 | }\r |
271 | \r | |
272 | return NULL;\r | |
273 | }\r | |
274 | \r | |
077f8c43 HW |
275 | /**\r |
276 | Return logical sector number of a given Long Allocation Descriptor.\r | |
277 | \r | |
6086569e HW |
278 | @param[in] Volume Volume information pointer.\r |
279 | @param[in] LongAd Long Allocation Descriptor pointer.\r | |
280 | @param[out] Lsn Logical sector number pointer.\r | |
077f8c43 | 281 | \r |
6086569e HW |
282 | @retval EFI_SUCCESS Logical sector number successfully returned.\r |
283 | @retval EFI_UNSUPPORTED Logical sector number is not returned due to\r | |
284 | unrecognized format.\r | |
077f8c43 HW |
285 | \r |
286 | **/\r | |
6086569e | 287 | EFI_STATUS\r |
99c9b949 | 288 | GetLongAdLsn (\r |
6086569e HW |
289 | IN UDF_VOLUME_INFO *Volume,\r |
290 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *LongAd,\r | |
291 | OUT UINT64 *Lsn\r | |
99c9b949 PA |
292 | )\r |
293 | {\r | |
1436aea4 | 294 | UDF_PARTITION_DESCRIPTOR *PartitionDesc;\r |
99c9b949 PA |
295 | \r |
296 | PartitionDesc = GetPdFromLongAd (Volume, LongAd);\r | |
6086569e HW |
297 | if (PartitionDesc == NULL) {\r |
298 | DEBUG ((\r | |
299 | DEBUG_ERROR,\r | |
300 | "%a: Fail to get the Partition Descriptor from the given Long Allocation Descriptor.\n",\r | |
301 | __FUNCTION__\r | |
302 | ));\r | |
303 | return EFI_UNSUPPORTED;\r | |
304 | }\r | |
99c9b949 | 305 | \r |
6086569e HW |
306 | *Lsn = (UINT64)PartitionDesc->PartitionStartingLocation -\r |
307 | Volume->MainVdsStartLocation +\r | |
308 | LongAd->ExtentLocation.LogicalBlockNumber;\r | |
309 | \r | |
310 | return EFI_SUCCESS;\r | |
99c9b949 PA |
311 | }\r |
312 | \r | |
077f8c43 HW |
313 | /**\r |
314 | Return logical sector number of a given Short Allocation Descriptor.\r | |
315 | \r | |
baaa3cee | 316 | @param[in] Volume Volume pointer.\r |
077f8c43 HW |
317 | @param[in] PartitionDesc Partition Descriptor pointer.\r |
318 | @param[in] ShortAd Short Allocation Descriptor pointer.\r | |
319 | \r | |
320 | @return The logical sector number of a given Short Allocation Descriptor.\r | |
321 | \r | |
322 | **/\r | |
99c9b949 PA |
323 | UINT64\r |
324 | GetShortAdLsn (\r | |
baaa3cee | 325 | IN UDF_VOLUME_INFO *Volume,\r |
99c9b949 PA |
326 | IN UDF_PARTITION_DESCRIPTOR *PartitionDesc,\r |
327 | IN UDF_SHORT_ALLOCATION_DESCRIPTOR *ShortAd\r | |
328 | )\r | |
329 | {\r | |
baaa3cee | 330 | return (UINT64)PartitionDesc->PartitionStartingLocation -\r |
1436aea4 | 331 | Volume->MainVdsStartLocation + ShortAd->ExtentPosition;\r |
99c9b949 PA |
332 | }\r |
333 | \r | |
077f8c43 HW |
334 | /**\r |
335 | Find File Set Descriptor of a given Logical Volume Descriptor.\r | |
336 | \r | |
337 | The found FSD will contain the extent (LogicalVolumeContentsUse) where our\r | |
338 | root directory is.\r | |
339 | \r | |
340 | @param[in] BlockIo BlockIo interface.\r | |
341 | @param[in] DiskIo DiskIo interface.\r | |
342 | @param[in] Volume Volume information pointer.\r | |
077f8c43 HW |
343 | \r |
344 | @retval EFI_SUCCESS File Set Descriptor pointer found.\r | |
345 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
346 | @retval other File Set Descriptor pointer not found.\r | |
347 | \r | |
348 | **/\r | |
99c9b949 PA |
349 | EFI_STATUS\r |
350 | FindFileSetDescriptor (\r | |
1436aea4 MK |
351 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r |
352 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
353 | IN UDF_VOLUME_INFO *Volume\r | |
99c9b949 PA |
354 | )\r |
355 | {\r | |
356 | EFI_STATUS Status;\r | |
357 | UINT64 Lsn;\r | |
358 | UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;\r | |
baaa3cee | 359 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r |
99c9b949 | 360 | \r |
baaa3cee | 361 | LogicalVolDesc = &Volume->LogicalVolDesc;\r |
1436aea4 | 362 | Status = GetLongAdLsn (Volume, &LogicalVolDesc->LogicalVolumeContentsUse, &Lsn);\r |
6086569e HW |
363 | if (EFI_ERROR (Status)) {\r |
364 | return Status;\r | |
365 | }\r | |
99c9b949 PA |
366 | \r |
367 | //\r | |
baaa3cee PA |
368 | // As per UDF 2.60 specification:\r |
369 | //\r | |
370 | // There shall be exactly one File Set Descriptor recorded per Logical\r | |
371 | // Volume.\r | |
372 | //\r | |
373 | // Read disk block\r | |
99c9b949 PA |
374 | //\r |
375 | Status = DiskIo->ReadDisk (\r | |
1436aea4 MK |
376 | DiskIo,\r |
377 | BlockIo->Media->MediaId,\r | |
378 | MultU64x32 (Lsn, LogicalVolDesc->LogicalBlockSize),\r | |
379 | sizeof (Volume->FileSetDesc),\r | |
380 | &Volume->FileSetDesc\r | |
381 | );\r | |
99c9b949 PA |
382 | if (EFI_ERROR (Status)) {\r |
383 | return Status;\r | |
384 | }\r | |
385 | \r | |
baaa3cee PA |
386 | DescriptorTag = &Volume->FileSetDesc.DescriptorTag;\r |
387 | \r | |
99c9b949 | 388 | //\r |
baaa3cee | 389 | // Check if read block is a File Set Descriptor\r |
99c9b949 | 390 | //\r |
baaa3cee | 391 | if (DescriptorTag->TagIdentifier != UdfFileSetDescriptor) {\r |
99c9b949 PA |
392 | return EFI_VOLUME_CORRUPTED;\r |
393 | }\r | |
394 | \r | |
395 | return EFI_SUCCESS;\r | |
396 | }\r | |
397 | \r | |
077f8c43 HW |
398 | /**\r |
399 | Read Volume and File Structure on an UDF file system.\r | |
400 | \r | |
401 | @param[in] BlockIo BlockIo interface.\r | |
402 | @param[in] DiskIo DiskIo interface.\r | |
403 | @param[out] Volume Volume information pointer.\r | |
404 | \r | |
405 | @retval EFI_SUCCESS Volume and File Structure were read.\r | |
406 | @retval other Volume and File Structure were not read.\r | |
407 | \r | |
408 | **/\r | |
99c9b949 PA |
409 | EFI_STATUS\r |
410 | ReadVolumeFileStructure (\r | |
411 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
412 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
413 | OUT UDF_VOLUME_INFO *Volume\r | |
414 | )\r | |
415 | {\r | |
416 | EFI_STATUS Status;\r | |
417 | UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER AnchorPoint;\r | |
baaa3cee | 418 | UDF_EXTENT_AD *ExtentAd;\r |
99c9b949 PA |
419 | \r |
420 | //\r | |
baaa3cee | 421 | // Find Anchor Volume Descriptor Pointer\r |
99c9b949 PA |
422 | //\r |
423 | Status = FindAnchorVolumeDescriptorPointer (\r | |
1436aea4 MK |
424 | BlockIo,\r |
425 | DiskIo,\r | |
426 | &AnchorPoint\r | |
427 | );\r | |
99c9b949 PA |
428 | if (EFI_ERROR (Status)) {\r |
429 | return Status;\r | |
430 | }\r | |
431 | \r | |
432 | //\r | |
baaa3cee PA |
433 | // Save Main VDS start block number\r |
434 | //\r | |
435 | ExtentAd = &AnchorPoint.MainVolumeDescriptorSequenceExtent;\r | |
436 | \r | |
437 | Volume->MainVdsStartLocation = (UINT64)ExtentAd->ExtentLocation;\r | |
438 | \r | |
439 | //\r | |
440 | // Start Main Volume Descriptor Sequence.\r | |
99c9b949 PA |
441 | //\r |
442 | Status = StartMainVolumeDescriptorSequence (\r | |
1436aea4 MK |
443 | BlockIo,\r |
444 | DiskIo,\r | |
445 | &AnchorPoint,\r | |
446 | Volume\r | |
447 | );\r | |
99c9b949 PA |
448 | if (EFI_ERROR (Status)) {\r |
449 | return Status;\r | |
450 | }\r | |
451 | \r | |
452 | return Status;\r | |
453 | }\r | |
454 | \r | |
077f8c43 HW |
455 | /**\r |
456 | Calculate length of a given File Identifier Descriptor.\r | |
457 | \r | |
458 | @param[in] FileIdentifierDesc File Identifier Descriptor pointer.\r | |
459 | \r | |
460 | @return The length of a given File Identifier Descriptor.\r | |
461 | \r | |
462 | **/\r | |
99c9b949 PA |
463 | UINT64\r |
464 | GetFidDescriptorLength (\r | |
465 | IN UDF_FILE_IDENTIFIER_DESCRIPTOR *FileIdentifierDesc\r | |
466 | )\r | |
467 | {\r | |
468 | return (UINT64)(\r | |
1436aea4 MK |
469 | (INTN)((OFFSET_OF (UDF_FILE_IDENTIFIER_DESCRIPTOR, Data[0]) + 3 +\r |
470 | FileIdentifierDesc->LengthOfFileIdentifier +\r | |
471 | FileIdentifierDesc->LengthOfImplementationUse) >> 2) << 2\r | |
472 | );\r | |
99c9b949 PA |
473 | }\r |
474 | \r | |
077f8c43 HW |
475 | /**\r |
476 | Duplicate a given File Identifier Descriptor.\r | |
477 | \r | |
478 | @param[in] FileIdentifierDesc File Identifier Descriptor pointer.\r | |
479 | @param[out] NewFileIdentifierDesc The duplicated File Identifier Descriptor.\r | |
480 | \r | |
481 | **/\r | |
99c9b949 PA |
482 | VOID\r |
483 | DuplicateFid (\r | |
484 | IN UDF_FILE_IDENTIFIER_DESCRIPTOR *FileIdentifierDesc,\r | |
485 | OUT UDF_FILE_IDENTIFIER_DESCRIPTOR **NewFileIdentifierDesc\r | |
486 | )\r | |
487 | {\r | |
488 | *NewFileIdentifierDesc =\r | |
489 | (UDF_FILE_IDENTIFIER_DESCRIPTOR *)AllocateCopyPool (\r | |
1436aea4 MK |
490 | (UINTN)GetFidDescriptorLength (FileIdentifierDesc),\r |
491 | FileIdentifierDesc\r | |
492 | );\r | |
99c9b949 PA |
493 | }\r |
494 | \r | |
077f8c43 HW |
495 | /**\r |
496 | Duplicate either a given File Entry or a given Extended File Entry.\r | |
497 | \r | |
498 | @param[in] BlockIo BlockIo interface.\r | |
499 | @param[in] Volume Volume information pointer.\r | |
500 | @param[in] FileEntry (Extended) File Entry pointer.\r | |
501 | @param[out] NewFileEntry The duplicated (Extended) File Entry.\r | |
502 | \r | |
503 | **/\r | |
99c9b949 PA |
504 | VOID\r |
505 | DuplicateFe (\r | |
506 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
507 | IN UDF_VOLUME_INFO *Volume,\r | |
508 | IN VOID *FileEntry,\r | |
509 | OUT VOID **NewFileEntry\r | |
510 | )\r | |
511 | {\r | |
512 | *NewFileEntry = AllocateCopyPool (Volume->FileEntrySize, FileEntry);\r | |
513 | }\r | |
514 | \r | |
077f8c43 HW |
515 | /**\r |
516 | Get raw data + length of a given File Entry or Extended File Entry.\r | |
517 | \r | |
518 | The file's recorded data can contain either real file content (inline) or\r | |
519 | a sequence of extents (or Allocation Descriptors) which tells where file's\r | |
520 | content is stored in.\r | |
521 | \r | |
522 | NOTE: The FE/EFE can be thought it was an inode.\r | |
523 | \r | |
5c0748f4 HW |
524 | @attention This is boundary function that may receive untrusted input.\r |
525 | @attention The input is from FileSystem.\r | |
526 | \r | |
527 | The (Extended) File Entry is external input, so this routine will do basic\r | |
528 | validation for (Extended) File Entry and report status.\r | |
529 | \r | |
077f8c43 | 530 | @param[in] FileEntryData (Extended) File Entry pointer.\r |
5c0748f4 HW |
531 | @param[in] FileEntrySize Size of the (Extended) File Entry specified\r |
532 | by FileEntryData.\r | |
077f8c43 HW |
533 | @param[out] Data Buffer contains the raw data of a given\r |
534 | (Extended) File Entry.\r | |
535 | @param[out] Length Length of the data in Buffer.\r | |
536 | \r | |
5c0748f4 HW |
537 | @retval EFI_SUCCESS Raw data and size of the FE/EFE was read.\r |
538 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
539 | \r | |
077f8c43 | 540 | **/\r |
5c0748f4 | 541 | EFI_STATUS\r |
99c9b949 PA |
542 | GetFileEntryData (\r |
543 | IN VOID *FileEntryData,\r | |
5c0748f4 | 544 | IN UINTN FileEntrySize,\r |
99c9b949 PA |
545 | OUT VOID **Data,\r |
546 | OUT UINT64 *Length\r | |
547 | )\r | |
548 | {\r | |
baaa3cee | 549 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r |
99c9b949 PA |
550 | UDF_EXTENDED_FILE_ENTRY *ExtendedFileEntry;\r |
551 | UDF_FILE_ENTRY *FileEntry;\r | |
552 | \r | |
baaa3cee PA |
553 | DescriptorTag = FileEntryData;\r |
554 | \r | |
555 | if (DescriptorTag->TagIdentifier == UdfExtendedFileEntry) {\r | |
99c9b949 PA |
556 | ExtendedFileEntry = (UDF_EXTENDED_FILE_ENTRY *)FileEntryData;\r |
557 | \r | |
1436aea4 MK |
558 | *Length = ExtendedFileEntry->InformationLength;\r |
559 | *Data = (VOID *)((UINT8 *)ExtendedFileEntry->Data +\r | |
560 | ExtendedFileEntry->LengthOfExtendedAttributes);\r | |
baaa3cee | 561 | } else if (DescriptorTag->TagIdentifier == UdfFileEntry) {\r |
99c9b949 PA |
562 | FileEntry = (UDF_FILE_ENTRY *)FileEntryData;\r |
563 | \r | |
1436aea4 MK |
564 | *Length = FileEntry->InformationLength;\r |
565 | *Data = (VOID *)((UINT8 *)FileEntry->Data +\r | |
566 | FileEntry->LengthOfExtendedAttributes);\r | |
99c9b949 | 567 | }\r |
5c0748f4 HW |
568 | \r |
569 | if ((*Length > FileEntrySize) ||\r | |
570 | ((UINTN)FileEntryData > (UINTN)(*Data)) ||\r | |
1436aea4 MK |
571 | ((UINTN)(*Data) - (UINTN)FileEntryData > FileEntrySize - *Length))\r |
572 | {\r | |
5c0748f4 HW |
573 | return EFI_VOLUME_CORRUPTED;\r |
574 | }\r | |
1436aea4 | 575 | \r |
5c0748f4 | 576 | return EFI_SUCCESS;\r |
99c9b949 PA |
577 | }\r |
578 | \r | |
077f8c43 HW |
579 | /**\r |
580 | Get Allocation Descriptors' data information from a given FE/EFE.\r | |
581 | \r | |
5c0748f4 HW |
582 | @attention This is boundary function that may receive untrusted input.\r |
583 | @attention The input is from FileSystem.\r | |
584 | \r | |
585 | The (Extended) File Entry is external input, so this routine will do basic\r | |
586 | validation for (Extended) File Entry and report status.\r | |
587 | \r | |
077f8c43 | 588 | @param[in] FileEntryData (Extended) File Entry pointer.\r |
5c0748f4 HW |
589 | @param[in] FileEntrySize Size of the (Extended) File Entry specified\r |
590 | by FileEntryData.\r | |
077f8c43 HW |
591 | @param[out] AdsData Buffer contains the Allocation Descriptors'\r |
592 | data from a given FE/EFE.\r | |
593 | @param[out] Length Length of the data in AdsData.\r | |
594 | \r | |
5c0748f4 HW |
595 | @retval EFI_SUCCESS The data and size of Allocation Descriptors\r |
596 | were read from the FE/EFE.\r | |
597 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
598 | \r | |
077f8c43 | 599 | **/\r |
5c0748f4 | 600 | EFI_STATUS\r |
99c9b949 PA |
601 | GetAdsInformation (\r |
602 | IN VOID *FileEntryData,\r | |
5c0748f4 | 603 | IN UINTN FileEntrySize,\r |
99c9b949 PA |
604 | OUT VOID **AdsData,\r |
605 | OUT UINT64 *Length\r | |
606 | )\r | |
607 | {\r | |
baaa3cee | 608 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r |
99c9b949 PA |
609 | UDF_EXTENDED_FILE_ENTRY *ExtendedFileEntry;\r |
610 | UDF_FILE_ENTRY *FileEntry;\r | |
611 | \r | |
baaa3cee PA |
612 | DescriptorTag = FileEntryData;\r |
613 | \r | |
614 | if (DescriptorTag->TagIdentifier == UdfExtendedFileEntry) {\r | |
99c9b949 PA |
615 | ExtendedFileEntry = (UDF_EXTENDED_FILE_ENTRY *)FileEntryData;\r |
616 | \r | |
1436aea4 | 617 | *Length = ExtendedFileEntry->LengthOfAllocationDescriptors;\r |
99c9b949 PA |
618 | *AdsData = (VOID *)((UINT8 *)ExtendedFileEntry->Data +\r |
619 | ExtendedFileEntry->LengthOfExtendedAttributes);\r | |
baaa3cee | 620 | } else if (DescriptorTag->TagIdentifier == UdfFileEntry) {\r |
99c9b949 PA |
621 | FileEntry = (UDF_FILE_ENTRY *)FileEntryData;\r |
622 | \r | |
1436aea4 | 623 | *Length = FileEntry->LengthOfAllocationDescriptors;\r |
99c9b949 PA |
624 | *AdsData = (VOID *)((UINT8 *)FileEntry->Data +\r |
625 | FileEntry->LengthOfExtendedAttributes);\r | |
626 | }\r | |
5c0748f4 HW |
627 | \r |
628 | if ((*Length > FileEntrySize) ||\r | |
629 | ((UINTN)FileEntryData > (UINTN)(*AdsData)) ||\r | |
1436aea4 MK |
630 | ((UINTN)(*AdsData) - (UINTN)FileEntryData > FileEntrySize - *Length))\r |
631 | {\r | |
5c0748f4 HW |
632 | return EFI_VOLUME_CORRUPTED;\r |
633 | }\r | |
1436aea4 | 634 | \r |
5c0748f4 | 635 | return EFI_SUCCESS;\r |
99c9b949 PA |
636 | }\r |
637 | \r | |
077f8c43 HW |
638 | /**\r |
639 | Read next Long Allocation Descriptor from a given file's data.\r | |
640 | \r | |
641 | @param[in] Data File's data pointer.\r | |
642 | @param[in,out] Offset Starting offset of the File's data to read.\r | |
643 | @param[in] Length Length of the data to read.\r | |
644 | @param[out] FoundLongAd Long Allocation Descriptor pointer.\r | |
645 | \r | |
646 | @retval EFI_SUCCESS A Long Allocation Descriptor was found.\r | |
647 | @retval EFI_DEVICE_ERROR No more Long Allocation Descriptors.\r | |
648 | \r | |
649 | **/\r | |
99c9b949 PA |
650 | EFI_STATUS\r |
651 | GetLongAdFromAds (\r | |
652 | IN VOID *Data,\r | |
653 | IN OUT UINT64 *Offset,\r | |
654 | IN UINT64 Length,\r | |
655 | OUT UDF_LONG_ALLOCATION_DESCRIPTOR **FoundLongAd\r | |
656 | )\r | |
657 | {\r | |
658 | UDF_LONG_ALLOCATION_DESCRIPTOR *LongAd;\r | |
659 | UDF_EXTENT_FLAGS ExtentFlags;\r | |
660 | \r | |
1436aea4 | 661 | for ( ; ;) {\r |
99c9b949 PA |
662 | if (*Offset >= Length) {\r |
663 | //\r | |
664 | // No more Long Allocation Descriptors.\r | |
665 | //\r | |
666 | return EFI_DEVICE_ERROR;\r | |
667 | }\r | |
668 | \r | |
669 | LongAd =\r | |
670 | (UDF_LONG_ALLOCATION_DESCRIPTOR *)((UINT8 *)Data + *Offset);\r | |
671 | \r | |
672 | //\r | |
673 | // If it's either an indirect AD (Extended Alllocation Descriptor) or an\r | |
674 | // allocated AD, then return it.\r | |
675 | //\r | |
880ec683 | 676 | ExtentFlags = GET_EXTENT_FLAGS (LongAdsSequence, LongAd);\r |
1436aea4 MK |
677 | if ((ExtentFlags == ExtentIsNextExtent) ||\r |
678 | (ExtentFlags == ExtentRecordedAndAllocated))\r | |
679 | {\r | |
99c9b949 PA |
680 | break;\r |
681 | }\r | |
682 | \r | |
683 | //\r | |
684 | // This AD is either not recorded but allocated, or not recorded and not\r | |
685 | // allocated. Skip it.\r | |
686 | //\r | |
880ec683 | 687 | *Offset += AD_LENGTH (LongAdsSequence);\r |
99c9b949 PA |
688 | }\r |
689 | \r | |
690 | *FoundLongAd = LongAd;\r | |
691 | \r | |
692 | return EFI_SUCCESS;\r | |
693 | }\r | |
694 | \r | |
077f8c43 HW |
695 | /**\r |
696 | Read next Short Allocation Descriptor from a given file's data.\r | |
697 | \r | |
698 | @param[in] Data File's data pointer.\r | |
699 | @param[in,out] Offset Starting offset of the File's data to read.\r | |
700 | @param[in] Length Length of the data to read.\r | |
701 | @param[out] FoundShortAd Short Allocation Descriptor pointer.\r | |
702 | \r | |
703 | @retval EFI_SUCCESS A Short Allocation Descriptor was found.\r | |
704 | @retval EFI_DEVICE_ERROR No more Short Allocation Descriptors.\r | |
705 | \r | |
706 | **/\r | |
99c9b949 PA |
707 | EFI_STATUS\r |
708 | GetShortAdFromAds (\r | |
709 | IN VOID *Data,\r | |
710 | IN OUT UINT64 *Offset,\r | |
711 | IN UINT64 Length,\r | |
712 | OUT UDF_SHORT_ALLOCATION_DESCRIPTOR **FoundShortAd\r | |
713 | )\r | |
714 | {\r | |
1436aea4 MK |
715 | UDF_SHORT_ALLOCATION_DESCRIPTOR *ShortAd;\r |
716 | UDF_EXTENT_FLAGS ExtentFlags;\r | |
99c9b949 | 717 | \r |
1436aea4 | 718 | for ( ; ;) {\r |
99c9b949 PA |
719 | if (*Offset >= Length) {\r |
720 | //\r | |
721 | // No more Short Allocation Descriptors.\r | |
722 | //\r | |
723 | return EFI_DEVICE_ERROR;\r | |
724 | }\r | |
725 | \r | |
726 | ShortAd =\r | |
727 | (UDF_SHORT_ALLOCATION_DESCRIPTOR *)((UINT8 *)Data + *Offset);\r | |
728 | \r | |
729 | //\r | |
730 | // If it's either an indirect AD (Extended Alllocation Descriptor) or an\r | |
731 | // allocated AD, then return it.\r | |
732 | //\r | |
880ec683 | 733 | ExtentFlags = GET_EXTENT_FLAGS (ShortAdsSequence, ShortAd);\r |
1436aea4 MK |
734 | if ((ExtentFlags == ExtentIsNextExtent) ||\r |
735 | (ExtentFlags == ExtentRecordedAndAllocated))\r | |
736 | {\r | |
99c9b949 PA |
737 | break;\r |
738 | }\r | |
739 | \r | |
740 | //\r | |
741 | // This AD is either not recorded but allocated, or not recorded and not\r | |
742 | // allocated. Skip it.\r | |
743 | //\r | |
880ec683 | 744 | *Offset += AD_LENGTH (ShortAdsSequence);\r |
99c9b949 PA |
745 | }\r |
746 | \r | |
747 | *FoundShortAd = ShortAd;\r | |
748 | \r | |
749 | return EFI_SUCCESS;\r | |
750 | }\r | |
751 | \r | |
077f8c43 HW |
752 | /**\r |
753 | Get either a Short Allocation Descriptor or a Long Allocation Descriptor from\r | |
754 | file's data.\r | |
755 | \r | |
756 | @param[in] RecordingFlags Flag to indicate the type of descriptor.\r | |
757 | @param[in] Data File's data pointer.\r | |
758 | @param[in,out] Offset Starting offset of the File's data to read.\r | |
759 | @param[in] Length Length of the data to read.\r | |
760 | @param[out] FoundAd Allocation Descriptor pointer.\r | |
761 | \r | |
762 | @retval EFI_SUCCESS A Short Allocation Descriptor was found.\r | |
763 | @retval EFI_DEVICE_ERROR No more Allocation Descriptors.\r | |
764 | Invalid type of descriptor was given.\r | |
765 | \r | |
766 | **/\r | |
99c9b949 PA |
767 | EFI_STATUS\r |
768 | GetAllocationDescriptor (\r | |
769 | IN UDF_FE_RECORDING_FLAGS RecordingFlags,\r | |
770 | IN VOID *Data,\r | |
771 | IN OUT UINT64 *Offset,\r | |
772 | IN UINT64 Length,\r | |
773 | OUT VOID **FoundAd\r | |
774 | )\r | |
775 | {\r | |
880ec683 | 776 | if (RecordingFlags == LongAdsSequence) {\r |
99c9b949 | 777 | return GetLongAdFromAds (\r |
1436aea4 MK |
778 | Data,\r |
779 | Offset,\r | |
780 | Length,\r | |
781 | (UDF_LONG_ALLOCATION_DESCRIPTOR **)FoundAd\r | |
782 | );\r | |
880ec683 | 783 | } else if (RecordingFlags == ShortAdsSequence) {\r |
99c9b949 | 784 | return GetShortAdFromAds (\r |
1436aea4 MK |
785 | Data,\r |
786 | Offset,\r | |
787 | Length,\r | |
788 | (UDF_SHORT_ALLOCATION_DESCRIPTOR **)FoundAd\r | |
789 | );\r | |
99c9b949 PA |
790 | }\r |
791 | \r | |
5317e9cc HW |
792 | //\r |
793 | // Code should never reach here.\r | |
794 | //\r | |
795 | ASSERT (FALSE);\r | |
99c9b949 PA |
796 | return EFI_DEVICE_ERROR;\r |
797 | }\r | |
798 | \r | |
077f8c43 HW |
799 | /**\r |
800 | Return logical sector number of either Short or Long Allocation Descriptor.\r | |
801 | \r | |
802 | @param[in] RecordingFlags Flag to indicate the type of descriptor.\r | |
803 | @param[in] Volume Volume information pointer.\r | |
804 | @param[in] ParentIcb Long Allocation Descriptor pointer.\r | |
805 | @param[in] Ad Allocation Descriptor pointer.\r | |
6086569e | 806 | @param[out] Lsn Logical sector number pointer.\r |
077f8c43 | 807 | \r |
6086569e HW |
808 | @retval EFI_SUCCESS Logical sector number of the given Allocation\r |
809 | Descriptor successfully returned.\r | |
810 | @retval EFI_UNSUPPORTED Logical sector number of the given Allocation\r | |
811 | Descriptor is not returned due to unrecognized\r | |
812 | format.\r | |
077f8c43 HW |
813 | \r |
814 | **/\r | |
6086569e | 815 | EFI_STATUS\r |
99c9b949 | 816 | GetAllocationDescriptorLsn (\r |
6086569e HW |
817 | IN UDF_FE_RECORDING_FLAGS RecordingFlags,\r |
818 | IN UDF_VOLUME_INFO *Volume,\r | |
819 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *ParentIcb,\r | |
820 | IN VOID *Ad,\r | |
821 | OUT UINT64 *Lsn\r | |
99c9b949 PA |
822 | )\r |
823 | {\r | |
1436aea4 | 824 | UDF_PARTITION_DESCRIPTOR *PartitionDesc;\r |
ce9aaba6 | 825 | \r |
880ec683 | 826 | if (RecordingFlags == LongAdsSequence) {\r |
6086569e | 827 | return GetLongAdLsn (Volume, (UDF_LONG_ALLOCATION_DESCRIPTOR *)Ad, Lsn);\r |
880ec683 | 828 | } else if (RecordingFlags == ShortAdsSequence) {\r |
ce9aaba6 | 829 | PartitionDesc = GetPdFromLongAd (Volume, ParentIcb);\r |
6086569e HW |
830 | if (PartitionDesc == NULL) {\r |
831 | return EFI_UNSUPPORTED;\r | |
832 | }\r | |
ce9aaba6 | 833 | \r |
6086569e HW |
834 | *Lsn = GetShortAdLsn (\r |
835 | Volume,\r | |
836 | PartitionDesc,\r | |
837 | (UDF_SHORT_ALLOCATION_DESCRIPTOR *)Ad\r | |
838 | );\r | |
839 | return EFI_SUCCESS;\r | |
99c9b949 PA |
840 | }\r |
841 | \r | |
5317e9cc HW |
842 | //\r |
843 | // Code should never reach here.\r | |
844 | //\r | |
845 | ASSERT (FALSE);\r | |
6086569e | 846 | return EFI_UNSUPPORTED;\r |
99c9b949 PA |
847 | }\r |
848 | \r | |
077f8c43 HW |
849 | /**\r |
850 | Return offset + length of a given indirect Allocation Descriptor (AED).\r | |
851 | \r | |
852 | @param[in] BlockIo BlockIo interface.\r | |
853 | @param[in] DiskIo DiskIo interface.\r | |
854 | @param[in] Volume Volume information pointer.\r | |
855 | @param[in] ParentIcb Long Allocation Descriptor pointer.\r | |
856 | @param[in] RecordingFlags Flag to indicate the type of descriptor.\r | |
857 | @param[in] Ad Allocation Descriptor pointer.\r | |
858 | @param[out] Offset Offset of a given indirect Allocation\r | |
859 | Descriptor.\r | |
860 | @param[out] Length Length of a given indirect Allocation\r | |
861 | Descriptor.\r | |
862 | \r | |
863 | @retval EFI_SUCCESS The offset and length were returned.\r | |
864 | @retval EFI_OUT_OF_RESOURCES The offset and length were not returned due\r | |
865 | to lack of resources.\r | |
866 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
867 | @retval other The offset and length were not returned.\r | |
868 | \r | |
869 | **/\r | |
99c9b949 PA |
870 | EFI_STATUS\r |
871 | GetAedAdsOffset (\r | |
872 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
873 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
874 | IN UDF_VOLUME_INFO *Volume,\r | |
875 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *ParentIcb,\r | |
876 | IN UDF_FE_RECORDING_FLAGS RecordingFlags,\r | |
877 | IN VOID *Ad,\r | |
878 | OUT UINT64 *Offset,\r | |
879 | OUT UINT64 *Length\r | |
880 | )\r | |
881 | {\r | |
882 | EFI_STATUS Status;\r | |
883 | UINT32 ExtentLength;\r | |
884 | UINT64 Lsn;\r | |
885 | VOID *Data;\r | |
886 | UINT32 LogicalBlockSize;\r | |
887 | UDF_ALLOCATION_EXTENT_DESCRIPTOR *AllocExtDesc;\r | |
baaa3cee | 888 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r |
99c9b949 | 889 | \r |
1436aea4 MK |
890 | ExtentLength = GET_EXTENT_LENGTH (RecordingFlags, Ad);\r |
891 | Status = GetAllocationDescriptorLsn (\r | |
892 | RecordingFlags,\r | |
893 | Volume,\r | |
894 | ParentIcb,\r | |
895 | Ad,\r | |
896 | &Lsn\r | |
897 | );\r | |
6086569e HW |
898 | if (EFI_ERROR (Status)) {\r |
899 | return Status;\r | |
900 | }\r | |
99c9b949 PA |
901 | \r |
902 | Data = AllocatePool (ExtentLength);\r | |
903 | if (Data == NULL) {\r | |
904 | return EFI_OUT_OF_RESOURCES;\r | |
905 | }\r | |
906 | \r | |
baaa3cee | 907 | LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;\r |
99c9b949 PA |
908 | \r |
909 | //\r | |
910 | // Read extent.\r | |
911 | //\r | |
912 | Status = DiskIo->ReadDisk (\r | |
1436aea4 MK |
913 | DiskIo,\r |
914 | BlockIo->Media->MediaId,\r | |
915 | MultU64x32 (Lsn, LogicalBlockSize),\r | |
916 | ExtentLength,\r | |
917 | Data\r | |
918 | );\r | |
99c9b949 PA |
919 | if (EFI_ERROR (Status)) {\r |
920 | goto Exit;\r | |
921 | }\r | |
922 | \r | |
baaa3cee PA |
923 | AllocExtDesc = (UDF_ALLOCATION_EXTENT_DESCRIPTOR *)Data;\r |
924 | \r | |
925 | DescriptorTag = &AllocExtDesc->DescriptorTag;\r | |
926 | \r | |
99c9b949 PA |
927 | //\r |
928 | // Check if read extent contains a valid tag identifier for AED.\r | |
929 | //\r | |
baaa3cee | 930 | if (DescriptorTag->TagIdentifier != UdfAllocationExtentDescriptor) {\r |
99c9b949 PA |
931 | Status = EFI_VOLUME_CORRUPTED;\r |
932 | goto Exit;\r | |
933 | }\r | |
934 | \r | |
935 | //\r | |
936 | // Get AED's block offset and its length.\r | |
937 | //\r | |
938 | *Offset = MultU64x32 (Lsn, LogicalBlockSize) +\r | |
1436aea4 | 939 | sizeof (UDF_ALLOCATION_EXTENT_DESCRIPTOR);\r |
99c9b949 PA |
940 | *Length = AllocExtDesc->LengthOfAllocationDescriptors;\r |
941 | \r | |
942 | Exit:\r | |
943 | FreePool (Data);\r | |
944 | \r | |
945 | return Status;\r | |
946 | }\r | |
947 | \r | |
077f8c43 HW |
948 | /**\r |
949 | Read Allocation Extent Descriptor into memory.\r | |
950 | \r | |
951 | @param[in] BlockIo BlockIo interface.\r | |
952 | @param[in] DiskIo DiskIo interface.\r | |
953 | @param[in] Volume Volume information pointer.\r | |
954 | @param[in] ParentIcb Long Allocation Descriptor pointer.\r | |
955 | @param[in] RecordingFlags Flag to indicate the type of descriptor.\r | |
956 | @param[in] Ad Allocation Descriptor pointer.\r | |
957 | @param[out] Data Buffer that contains the Allocation Extent\r | |
958 | Descriptor.\r | |
959 | @param[out] Length Length of Data.\r | |
960 | \r | |
961 | @retval EFI_SUCCESS The Allocation Extent Descriptor was read.\r | |
962 | @retval EFI_OUT_OF_RESOURCES The Allocation Extent Descriptor was not read\r | |
963 | due to lack of resources.\r | |
964 | @retval other Fail to read the disk.\r | |
965 | \r | |
966 | **/\r | |
99c9b949 PA |
967 | EFI_STATUS\r |
968 | GetAedAdsData (\r | |
969 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
970 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
971 | IN UDF_VOLUME_INFO *Volume,\r | |
972 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *ParentIcb,\r | |
973 | IN UDF_FE_RECORDING_FLAGS RecordingFlags,\r | |
974 | IN VOID *Ad,\r | |
975 | OUT VOID **Data,\r | |
976 | OUT UINT64 *Length\r | |
977 | )\r | |
978 | {\r | |
979 | EFI_STATUS Status;\r | |
980 | UINT64 Offset;\r | |
981 | \r | |
982 | //\r | |
983 | // Get AED's offset + length.\r | |
984 | //\r | |
985 | Status = GetAedAdsOffset (\r | |
1436aea4 MK |
986 | BlockIo,\r |
987 | DiskIo,\r | |
988 | Volume,\r | |
989 | ParentIcb,\r | |
990 | RecordingFlags,\r | |
991 | Ad,\r | |
992 | &Offset,\r | |
993 | Length\r | |
994 | );\r | |
99c9b949 PA |
995 | if (EFI_ERROR (Status)) {\r |
996 | return Status;\r | |
997 | }\r | |
998 | \r | |
999 | //\r | |
1000 | // Allocate buffer to read in AED's data.\r | |
1001 | //\r | |
1436aea4 | 1002 | *Data = AllocatePool ((UINTN)(*Length));\r |
99c9b949 PA |
1003 | if (*Data == NULL) {\r |
1004 | return EFI_OUT_OF_RESOURCES;\r | |
1005 | }\r | |
1006 | \r | |
1007 | return DiskIo->ReadDisk (\r | |
1436aea4 MK |
1008 | DiskIo,\r |
1009 | BlockIo->Media->MediaId,\r | |
1010 | Offset,\r | |
1011 | (UINTN)(*Length),\r | |
1012 | *Data\r | |
1013 | );\r | |
99c9b949 PA |
1014 | }\r |
1015 | \r | |
077f8c43 HW |
1016 | /**\r |
1017 | Function used to serialise reads of Allocation Descriptors.\r | |
1018 | \r | |
1019 | @param[in] RecordingFlags Flag to indicate the type of descriptor.\r | |
1020 | @param[in] Ad Allocation Descriptor pointer.\r | |
1021 | @param[in, out] Buffer Buffer to hold the next Allocation Descriptor.\r | |
1022 | @param[in] Length Length of Buffer.\r | |
1023 | \r | |
1024 | @retval EFI_SUCCESS Buffer was grown to hold the next Allocation\r | |
1025 | Descriptor.\r | |
1026 | @retval EFI_OUT_OF_RESOURCES Buffer was not grown due to lack of resources.\r | |
1027 | \r | |
1028 | **/\r | |
99c9b949 PA |
1029 | EFI_STATUS\r |
1030 | GrowUpBufferToNextAd (\r | |
1031 | IN UDF_FE_RECORDING_FLAGS RecordingFlags,\r | |
1032 | IN VOID *Ad,\r | |
1033 | IN OUT VOID **Buffer,\r | |
1034 | IN UINT64 Length\r | |
1035 | )\r | |
1036 | {\r | |
1436aea4 | 1037 | UINT32 ExtentLength;\r |
99c9b949 PA |
1038 | \r |
1039 | ExtentLength = GET_EXTENT_LENGTH (RecordingFlags, Ad);\r | |
1040 | \r | |
1041 | if (*Buffer == NULL) {\r | |
1042 | *Buffer = AllocatePool (ExtentLength);\r | |
1043 | if (*Buffer == NULL) {\r | |
1044 | return EFI_OUT_OF_RESOURCES;\r | |
1045 | }\r | |
1046 | } else {\r | |
1436aea4 | 1047 | *Buffer = ReallocatePool ((UINTN)Length, (UINTN)(Length + ExtentLength), *Buffer);\r |
99c9b949 PA |
1048 | if (*Buffer == NULL) {\r |
1049 | return EFI_OUT_OF_RESOURCES;\r | |
1050 | }\r | |
1051 | }\r | |
1052 | \r | |
1053 | return EFI_SUCCESS;\r | |
1054 | }\r | |
1055 | \r | |
077f8c43 HW |
1056 | /**\r |
1057 | Read data or size of either a File Entry or an Extended File Entry.\r | |
1058 | \r | |
1059 | @param[in] BlockIo BlockIo interface.\r | |
1060 | @param[in] DiskIo DiskIo interface.\r | |
1061 | @param[in] Volume Volume information pointer.\r | |
1062 | @param[in] ParentIcb Long Allocation Descriptor pointer.\r | |
1063 | @param[in] FileEntryData FE/EFE structure pointer.\r | |
1064 | @param[in, out] ReadFileInfo Read file information pointer.\r | |
1065 | \r | |
1066 | @retval EFI_SUCCESS Data or size of a FE/EFE was read.\r | |
1067 | @retval EFI_OUT_OF_RESOURCES Data or size of a FE/EFE was not read due to\r | |
1068 | lack of resources.\r | |
1069 | @retval EFI_INVALID_PARAMETER The read file flag given in ReadFileInfo is\r | |
1070 | invalid.\r | |
1071 | @retval EFI_UNSUPPORTED The FE recording flag given in FileEntryData\r | |
1072 | is not supported.\r | |
1073 | @retval other Data or size of a FE/EFE was not read.\r | |
1074 | \r | |
1075 | **/\r | |
99c9b949 PA |
1076 | EFI_STATUS\r |
1077 | ReadFile (\r | |
1078 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
1079 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
1080 | IN UDF_VOLUME_INFO *Volume,\r | |
1081 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *ParentIcb,\r | |
1082 | IN VOID *FileEntryData,\r | |
1083 | IN OUT UDF_READ_FILE_INFO *ReadFileInfo\r | |
1084 | )\r | |
1085 | {\r | |
1086 | EFI_STATUS Status;\r | |
1087 | UINT32 LogicalBlockSize;\r | |
1088 | VOID *Data;\r | |
68099b52 | 1089 | VOID *DataBak;\r |
99c9b949 PA |
1090 | UINT64 Length;\r |
1091 | VOID *Ad;\r | |
1092 | UINT64 AdOffset;\r | |
1093 | UINT64 Lsn;\r | |
1094 | BOOLEAN DoFreeAed;\r | |
1095 | UINT64 FilePosition;\r | |
1096 | UINT64 Offset;\r | |
1097 | UINT64 DataOffset;\r | |
1098 | UINT64 BytesLeft;\r | |
1099 | UINT64 DataLength;\r | |
1100 | BOOLEAN FinishedSeeking;\r | |
1101 | UINT32 ExtentLength;\r | |
1102 | UDF_FE_RECORDING_FLAGS RecordingFlags;\r | |
1103 | \r | |
1436aea4 MK |
1104 | LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;\r |
1105 | DoFreeAed = FALSE;\r | |
99c9b949 | 1106 | \r |
5afa5b81 LE |
1107 | //\r |
1108 | // set BytesLeft to suppress incorrect compiler/analyzer warnings\r | |
1109 | //\r | |
1436aea4 MK |
1110 | BytesLeft = 0;\r |
1111 | DataOffset = 0;\r | |
1112 | FilePosition = 0;\r | |
54537008 | 1113 | FinishedSeeking = FALSE;\r |
1436aea4 | 1114 | Data = NULL;\r |
5afa5b81 | 1115 | \r |
99c9b949 | 1116 | switch (ReadFileInfo->Flags) {\r |
1436aea4 MK |
1117 | case ReadFileGetFileSize:\r |
1118 | case ReadFileAllocateAndRead:\r | |
99c9b949 | 1119 | //\r |
1436aea4 MK |
1120 | // Initialise ReadFileInfo structure for either getting file size, or\r |
1121 | // reading file's recorded data.\r | |
99c9b949 | 1122 | //\r |
1436aea4 MK |
1123 | ReadFileInfo->ReadLength = 0;\r |
1124 | ReadFileInfo->FileData = NULL;\r | |
1125 | break;\r | |
1126 | case ReadFileSeekAndRead:\r | |
99c9b949 | 1127 | //\r |
1436aea4 | 1128 | // About to seek a file and/or read its data.\r |
99c9b949 | 1129 | //\r |
1436aea4 MK |
1130 | Length = ReadFileInfo->FileSize - ReadFileInfo->FilePosition;\r |
1131 | if (ReadFileInfo->FileDataSize > Length) {\r | |
1132 | //\r | |
1133 | // About to read beyond the EOF -- truncate it.\r | |
1134 | //\r | |
1135 | ReadFileInfo->FileDataSize = Length;\r | |
99c9b949 PA |
1136 | }\r |
1137 | \r | |
1138 | //\r | |
1436aea4 | 1139 | // Initialise data to start seeking and/or reading a file.\r |
99c9b949 | 1140 | //\r |
1436aea4 MK |
1141 | BytesLeft = ReadFileInfo->FileDataSize;\r |
1142 | DataOffset = 0;\r | |
1143 | FilePosition = 0;\r | |
1144 | FinishedSeeking = FALSE;\r | |
5c0748f4 | 1145 | \r |
1436aea4 MK |
1146 | break;\r |
1147 | }\r | |
99c9b949 | 1148 | \r |
1436aea4 MK |
1149 | RecordingFlags = GET_FE_RECORDING_FLAGS (FileEntryData);\r |
1150 | switch (RecordingFlags) {\r | |
1151 | case InlineData:\r | |
99c9b949 | 1152 | //\r |
1436aea4 | 1153 | // There are no extents for this FE/EFE. All data is inline.\r |
99c9b949 | 1154 | //\r |
1436aea4 MK |
1155 | Status = GetFileEntryData (FileEntryData, Volume->FileEntrySize, &Data, &Length);\r |
1156 | if (EFI_ERROR (Status)) {\r | |
1157 | return Status;\r | |
99c9b949 PA |
1158 | }\r |
1159 | \r | |
1436aea4 MK |
1160 | if (ReadFileInfo->Flags == ReadFileGetFileSize) {\r |
1161 | ReadFileInfo->ReadLength = Length;\r | |
1162 | } else if (ReadFileInfo->Flags == ReadFileAllocateAndRead) {\r | |
1163 | //\r | |
1164 | // Allocate buffer for starting read data.\r | |
1165 | //\r | |
1166 | ReadFileInfo->FileData = AllocatePool ((UINTN)Length);\r | |
1167 | if (ReadFileInfo->FileData == NULL) {\r | |
1168 | return EFI_OUT_OF_RESOURCES;\r | |
68099b52 HW |
1169 | }\r |
1170 | \r | |
1436aea4 MK |
1171 | //\r |
1172 | // Read all inline data into ReadFileInfo->FileData\r | |
1173 | //\r | |
1174 | CopyMem (ReadFileInfo->FileData, Data, (UINTN)Length);\r | |
1175 | ReadFileInfo->ReadLength = Length;\r | |
1176 | } else if (ReadFileInfo->Flags == ReadFileSeekAndRead) {\r | |
1177 | //\r | |
1178 | // If FilePosition is non-zero, seek file to FilePosition, read\r | |
1179 | // FileDataSize bytes and then updates FilePosition.\r | |
1180 | //\r | |
1181 | CopyMem (\r | |
1182 | ReadFileInfo->FileData,\r | |
1183 | (VOID *)((UINT8 *)Data + ReadFileInfo->FilePosition),\r | |
1184 | (UINTN)ReadFileInfo->FileDataSize\r | |
1185 | );\r | |
99c9b949 | 1186 | \r |
1436aea4 MK |
1187 | ReadFileInfo->FilePosition += ReadFileInfo->FileDataSize;\r |
1188 | } else {\r | |
1189 | ASSERT (FALSE);\r | |
1190 | return EFI_INVALID_PARAMETER;\r | |
99c9b949 PA |
1191 | }\r |
1192 | \r | |
1436aea4 MK |
1193 | Status = EFI_SUCCESS;\r |
1194 | break;\r | |
99c9b949 | 1195 | \r |
1436aea4 MK |
1196 | case LongAdsSequence:\r |
1197 | case ShortAdsSequence:\r | |
1198 | //\r | |
1199 | // This FE/EFE contains a run of Allocation Descriptors. Get data + size\r | |
1200 | // for start reading them out.\r | |
1201 | //\r | |
1202 | Status = GetAdsInformation (FileEntryData, Volume->FileEntrySize, &Data, &Length);\r | |
6086569e | 1203 | if (EFI_ERROR (Status)) {\r |
1436aea4 | 1204 | return Status;\r |
6086569e | 1205 | }\r |
99c9b949 | 1206 | \r |
1436aea4 | 1207 | AdOffset = 0;\r |
99c9b949 | 1208 | \r |
1436aea4 | 1209 | for ( ; ;) {\r |
99c9b949 | 1210 | //\r |
1436aea4 | 1211 | // Read AD.\r |
99c9b949 | 1212 | //\r |
1436aea4 MK |
1213 | Status = GetAllocationDescriptor (\r |
1214 | RecordingFlags,\r | |
1215 | Data,\r | |
1216 | &AdOffset,\r | |
1217 | Length,\r | |
1218 | &Ad\r | |
1219 | );\r | |
1220 | if (Status == EFI_DEVICE_ERROR) {\r | |
1221 | Status = EFI_SUCCESS;\r | |
1222 | goto Done;\r | |
99c9b949 PA |
1223 | }\r |
1224 | \r | |
99c9b949 | 1225 | //\r |
1436aea4 MK |
1226 | // Check if AD is an indirect AD. If so, read Allocation Extent\r |
1227 | // Descriptor and its extents (ADs).\r | |
99c9b949 | 1228 | //\r |
1436aea4 MK |
1229 | if (GET_EXTENT_FLAGS (RecordingFlags, Ad) == ExtentIsNextExtent) {\r |
1230 | DataBak = Data;\r | |
1231 | Status = GetAedAdsData (\r | |
1232 | BlockIo,\r | |
1233 | DiskIo,\r | |
1234 | Volume,\r | |
1235 | ParentIcb,\r | |
1236 | RecordingFlags,\r | |
1237 | Ad,\r | |
1238 | &Data,\r | |
1239 | &Length\r | |
1240 | );\r | |
1241 | \r | |
1242 | if (!DoFreeAed) {\r | |
1243 | DoFreeAed = TRUE;\r | |
1244 | } else {\r | |
1245 | FreePool (DataBak);\r | |
1246 | }\r | |
99c9b949 | 1247 | \r |
1436aea4 MK |
1248 | if (EFI_ERROR (Status)) {\r |
1249 | goto Error_Get_Aed;\r | |
1250 | }\r | |
99c9b949 | 1251 | \r |
1436aea4 MK |
1252 | ASSERT (Data != NULL);\r |
1253 | \r | |
1254 | AdOffset = 0;\r | |
1255 | continue;\r | |
99c9b949 PA |
1256 | }\r |
1257 | \r | |
1436aea4 | 1258 | ExtentLength = GET_EXTENT_LENGTH (RecordingFlags, Ad);\r |
99c9b949 | 1259 | \r |
1436aea4 MK |
1260 | Status = GetAllocationDescriptorLsn (\r |
1261 | RecordingFlags,\r | |
1262 | Volume,\r | |
1263 | ParentIcb,\r | |
1264 | Ad,\r | |
1265 | &Lsn\r | |
1266 | );\r | |
1267 | if (EFI_ERROR (Status)) {\r | |
1268 | goto Done;\r | |
99c9b949 PA |
1269 | }\r |
1270 | \r | |
1436aea4 MK |
1271 | switch (ReadFileInfo->Flags) {\r |
1272 | case ReadFileGetFileSize:\r | |
1273 | ReadFileInfo->ReadLength += ExtentLength;\r | |
1274 | break;\r | |
1275 | case ReadFileAllocateAndRead:\r | |
1276 | //\r | |
1277 | // Increase FileData (if necessary) to read next extent.\r | |
1278 | //\r | |
1279 | Status = GrowUpBufferToNextAd (\r | |
1280 | RecordingFlags,\r | |
1281 | Ad,\r | |
1282 | &ReadFileInfo->FileData,\r | |
1283 | ReadFileInfo->ReadLength\r | |
1284 | );\r | |
1285 | if (EFI_ERROR (Status)) {\r | |
1286 | goto Error_Alloc_Buffer_To_Next_Ad;\r | |
1287 | }\r | |
1288 | \r | |
1289 | //\r | |
1290 | // Read extent's data into FileData.\r | |
1291 | //\r | |
1292 | Status = DiskIo->ReadDisk (\r | |
1293 | DiskIo,\r | |
1294 | BlockIo->Media->MediaId,\r | |
1295 | MultU64x32 (Lsn, LogicalBlockSize),\r | |
1296 | ExtentLength,\r | |
1297 | (VOID *)((UINT8 *)ReadFileInfo->FileData +\r | |
1298 | ReadFileInfo->ReadLength)\r | |
1299 | );\r | |
1300 | if (EFI_ERROR (Status)) {\r | |
1301 | goto Error_Read_Disk_Blk;\r | |
1302 | }\r | |
1303 | \r | |
1304 | ReadFileInfo->ReadLength += ExtentLength;\r | |
1305 | break;\r | |
1306 | case ReadFileSeekAndRead:\r | |
1307 | //\r | |
1308 | // Seek file first before reading in its data.\r | |
1309 | //\r | |
1310 | if (FinishedSeeking) {\r | |
1311 | Offset = 0;\r | |
1312 | goto Skip_File_Seek;\r | |
1313 | }\r | |
1314 | \r | |
1315 | if (FilePosition + ExtentLength < ReadFileInfo->FilePosition) {\r | |
1316 | FilePosition += ExtentLength;\r | |
1317 | goto Skip_Ad;\r | |
1318 | }\r | |
1319 | \r | |
1320 | if (FilePosition + ExtentLength > ReadFileInfo->FilePosition) {\r | |
1321 | Offset = ReadFileInfo->FilePosition - FilePosition;\r | |
1322 | } else {\r | |
1323 | Offset = 0;\r | |
1324 | }\r | |
1325 | \r | |
1326 | //\r | |
1327 | // Done with seeking file. Start reading its data.\r | |
1328 | //\r | |
1329 | FinishedSeeking = TRUE;\r | |
1330 | \r | |
1331 | Skip_File_Seek:\r | |
1332 | //\r | |
1333 | // Make sure we don't read more data than really wanted.\r | |
1334 | //\r | |
1335 | if (ExtentLength - Offset > BytesLeft) {\r | |
1336 | DataLength = BytesLeft;\r | |
1337 | } else {\r | |
1338 | DataLength = ExtentLength - Offset;\r | |
1339 | }\r | |
1340 | \r | |
1341 | //\r | |
1342 | // Read extent's data into FileData.\r | |
1343 | //\r | |
1344 | Status = DiskIo->ReadDisk (\r | |
1345 | DiskIo,\r | |
1346 | BlockIo->Media->MediaId,\r | |
1347 | Offset + MultU64x32 (Lsn, LogicalBlockSize),\r | |
1348 | (UINTN)DataLength,\r | |
1349 | (VOID *)((UINT8 *)ReadFileInfo->FileData +\r | |
1350 | DataOffset)\r | |
1351 | );\r | |
1352 | if (EFI_ERROR (Status)) {\r | |
1353 | goto Error_Read_Disk_Blk;\r | |
1354 | }\r | |
1355 | \r | |
1356 | //\r | |
1357 | // Update current file's position.\r | |
1358 | //\r | |
1359 | DataOffset += DataLength;\r | |
1360 | ReadFileInfo->FilePosition += DataLength;\r | |
1361 | \r | |
1362 | BytesLeft -= DataLength;\r | |
1363 | if (BytesLeft == 0) {\r | |
1364 | //\r | |
1365 | // There is no more file data to read.\r | |
1366 | //\r | |
1367 | Status = EFI_SUCCESS;\r | |
1368 | goto Done;\r | |
1369 | }\r | |
1370 | \r | |
1371 | break;\r | |
99c9b949 PA |
1372 | }\r |
1373 | \r | |
1436aea4 | 1374 | Skip_Ad:\r |
99c9b949 | 1375 | //\r |
1436aea4 | 1376 | // Point to the next AD (extent).\r |
99c9b949 | 1377 | //\r |
1436aea4 | 1378 | AdOffset += AD_LENGTH (RecordingFlags);\r |
99c9b949 PA |
1379 | }\r |
1380 | \r | |
1436aea4 MK |
1381 | break;\r |
1382 | case ExtendedAdsSequence:\r | |
1383 | // FIXME: Not supported. Got no volume with it, yet.\r | |
1384 | ASSERT (FALSE);\r | |
1385 | Status = EFI_UNSUPPORTED;\r | |
1386 | break;\r | |
1387 | \r | |
1388 | default:\r | |
99c9b949 | 1389 | //\r |
1436aea4 MK |
1390 | // A flag value reserved by the ECMA-167 standard (3rd Edition - June\r |
1391 | // 1997); 14.6 ICB Tag; 14.6.8 Flags (RBP 18); was found.\r | |
99c9b949 | 1392 | //\r |
1436aea4 MK |
1393 | Status = EFI_UNSUPPORTED;\r |
1394 | break;\r | |
99c9b949 PA |
1395 | }\r |
1396 | \r | |
1397 | Done:\r | |
1398 | if (DoFreeAed) {\r | |
1399 | FreePool (Data);\r | |
1400 | }\r | |
1401 | \r | |
1402 | return Status;\r | |
1403 | \r | |
1404 | Error_Read_Disk_Blk:\r | |
1405 | Error_Alloc_Buffer_To_Next_Ad:\r | |
880ec683 | 1406 | if (ReadFileInfo->Flags != ReadFileSeekAndRead) {\r |
99c9b949 PA |
1407 | FreePool (ReadFileInfo->FileData);\r |
1408 | }\r | |
1409 | \r | |
1410 | if (DoFreeAed) {\r | |
1411 | FreePool (Data);\r | |
1412 | }\r | |
1413 | \r | |
1414 | Error_Get_Aed:\r | |
1415 | return Status;\r | |
1416 | }\r | |
1417 | \r | |
077f8c43 HW |
1418 | /**\r |
1419 | Find a file by its filename from a given Parent file.\r | |
1420 | \r | |
1421 | @param[in] BlockIo BlockIo interface.\r | |
1422 | @param[in] DiskIo DiskIo interface.\r | |
1423 | @param[in] Volume Volume information pointer.\r | |
1424 | @param[in] FileName File name string.\r | |
1425 | @param[in] Parent Parent directory file.\r | |
1426 | @param[in] Icb Long Allocation Descriptor pointer.\r | |
1427 | @param[out] File Found file.\r | |
1428 | \r | |
1429 | @retval EFI_SUCCESS The file was found.\r | |
1430 | @retval EFI_INVALID_PARAMETER One or more input parameters are invalid.\r | |
1431 | @retval EFI_NOT_FOUND The file was not found.\r | |
1432 | \r | |
1433 | **/\r | |
99c9b949 PA |
1434 | EFI_STATUS\r |
1435 | InternalFindFile (\r | |
1436 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
1437 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
1438 | IN UDF_VOLUME_INFO *Volume,\r | |
1439 | IN CHAR16 *FileName,\r | |
1440 | IN UDF_FILE_INFO *Parent,\r | |
1441 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *Icb,\r | |
1442 | OUT UDF_FILE_INFO *File\r | |
1443 | )\r | |
1444 | {\r | |
1445 | EFI_STATUS Status;\r | |
1446 | UDF_FILE_IDENTIFIER_DESCRIPTOR *FileIdentifierDesc;\r | |
1447 | UDF_READ_DIRECTORY_INFO ReadDirInfo;\r | |
1448 | BOOLEAN Found;\r | |
1449 | CHAR16 FoundFileName[UDF_FILENAME_LENGTH];\r | |
1450 | VOID *CompareFileEntry;\r | |
1451 | \r | |
3fa40d58 HW |
1452 | //\r |
1453 | // Check if both Parent->FileIdentifierDesc and Icb are NULL.\r | |
1454 | //\r | |
1455 | if ((Parent->FileIdentifierDesc == NULL) && (Icb == NULL)) {\r | |
1456 | return EFI_INVALID_PARAMETER;\r | |
1457 | }\r | |
1458 | \r | |
99c9b949 PA |
1459 | //\r |
1460 | // Check if parent file is really directory.\r | |
1461 | //\r | |
baaa3cee | 1462 | if (FE_ICB_FILE_TYPE (Parent->FileEntry) != UdfFileEntryDirectory) {\r |
99c9b949 PA |
1463 | return EFI_NOT_FOUND;\r |
1464 | }\r | |
1465 | \r | |
1466 | //\r | |
1467 | // If FileName is current file or working directory, just duplicate Parent's\r | |
1468 | // FE/EFE and FID descriptors.\r | |
1469 | //\r | |
1470 | if (StrCmp (FileName, L".") == 0) {\r | |
3fa40d58 HW |
1471 | if (Parent->FileIdentifierDesc == NULL) {\r |
1472 | return EFI_INVALID_PARAMETER;\r | |
1473 | }\r | |
1474 | \r | |
99c9b949 | 1475 | DuplicateFe (BlockIo, Volume, Parent->FileEntry, &File->FileEntry);\r |
ebb12f51 HW |
1476 | if (File->FileEntry == NULL) {\r |
1477 | return EFI_OUT_OF_RESOURCES;\r | |
1478 | }\r | |
1479 | \r | |
99c9b949 | 1480 | DuplicateFid (Parent->FileIdentifierDesc, &File->FileIdentifierDesc);\r |
ebb12f51 HW |
1481 | if (File->FileIdentifierDesc == NULL) {\r |
1482 | FreePool (File->FileEntry);\r | |
1483 | return EFI_OUT_OF_RESOURCES;\r | |
1484 | }\r | |
99c9b949 PA |
1485 | \r |
1486 | return EFI_SUCCESS;\r | |
1487 | }\r | |
1488 | \r | |
1489 | //\r | |
1490 | // Start directory listing.\r | |
1491 | //\r | |
1492 | ZeroMem ((VOID *)&ReadDirInfo, sizeof (UDF_READ_DIRECTORY_INFO));\r | |
1493 | Found = FALSE;\r | |
1494 | \r | |
1436aea4 | 1495 | for ( ; ;) {\r |
99c9b949 | 1496 | Status = ReadDirectoryEntry (\r |
1436aea4 MK |
1497 | BlockIo,\r |
1498 | DiskIo,\r | |
1499 | Volume,\r | |
1500 | (Parent->FileIdentifierDesc != NULL) ?\r | |
1501 | &Parent->FileIdentifierDesc->Icb :\r | |
1502 | Icb,\r | |
1503 | Parent->FileEntry,\r | |
1504 | &ReadDirInfo,\r | |
1505 | &FileIdentifierDesc\r | |
1506 | );\r | |
99c9b949 PA |
1507 | if (EFI_ERROR (Status)) {\r |
1508 | if (Status == EFI_DEVICE_ERROR) {\r | |
1509 | Status = EFI_NOT_FOUND;\r | |
1510 | }\r | |
1511 | \r | |
1512 | break;\r | |
1513 | }\r | |
1436aea4 | 1514 | \r |
5fb22f59 HW |
1515 | //\r |
1516 | // After calling function ReadDirectoryEntry(), if 'FileIdentifierDesc' is\r | |
1517 | // NULL, then the 'Status' must be EFI_OUT_OF_RESOURCES. Hence, if the code\r | |
1518 | // reaches here, 'FileIdentifierDesc' must be not NULL.\r | |
1519 | //\r | |
1520 | // The ASSERT here is for addressing a false positive NULL pointer\r | |
1521 | // dereference issue raised from static analysis.\r | |
1522 | //\r | |
1523 | ASSERT (FileIdentifierDesc != NULL);\r | |
99c9b949 | 1524 | \r |
baaa3cee | 1525 | if (FileIdentifierDesc->FileCharacteristics & PARENT_FILE) {\r |
99c9b949 PA |
1526 | //\r |
1527 | // This FID contains the location (FE/EFE) of the parent directory of this\r | |
1528 | // directory (Parent), and if FileName is either ".." or "\\", then it's\r | |
1529 | // the expected FID.\r | |
1530 | //\r | |
1436aea4 | 1531 | if ((StrCmp (FileName, L"..") == 0) || (StrCmp (FileName, L"\\") == 0)) {\r |
99c9b949 PA |
1532 | Found = TRUE;\r |
1533 | break;\r | |
1534 | }\r | |
1535 | } else {\r | |
b9ae1705 | 1536 | Status = GetFileNameFromFid (FileIdentifierDesc, ARRAY_SIZE (FoundFileName), FoundFileName);\r |
99c9b949 PA |
1537 | if (EFI_ERROR (Status)) {\r |
1538 | break;\r | |
1539 | }\r | |
1540 | \r | |
1541 | if (StrCmp (FileName, FoundFileName) == 0) {\r | |
1542 | //\r | |
1543 | // FID has been found. Prepare to find its respective FE/EFE.\r | |
1544 | //\r | |
1545 | Found = TRUE;\r | |
1546 | break;\r | |
1547 | }\r | |
1548 | }\r | |
1549 | \r | |
1550 | FreePool ((VOID *)FileIdentifierDesc);\r | |
1551 | }\r | |
1552 | \r | |
1553 | if (ReadDirInfo.DirectoryData != NULL) {\r | |
1554 | //\r | |
1555 | // Free all allocated resources for the directory listing.\r | |
1556 | //\r | |
1557 | FreePool (ReadDirInfo.DirectoryData);\r | |
1558 | }\r | |
1559 | \r | |
1560 | if (Found) {\r | |
1561 | Status = EFI_SUCCESS;\r | |
1562 | \r | |
1563 | File->FileIdentifierDesc = FileIdentifierDesc;\r | |
1564 | \r | |
1565 | //\r | |
1566 | // If the requested file is root directory, then the FE/EFE was already\r | |
1567 | // retrieved in UdfOpenVolume() function, thus no need to find it again.\r | |
1568 | //\r | |
1569 | // Otherwise, find FE/EFE from the respective FID.\r | |
1570 | //\r | |
1571 | if (StrCmp (FileName, L"\\") != 0) {\r | |
1572 | Status = FindFileEntry (\r | |
1436aea4 MK |
1573 | BlockIo,\r |
1574 | DiskIo,\r | |
1575 | Volume,\r | |
1576 | &FileIdentifierDesc->Icb,\r | |
1577 | &CompareFileEntry\r | |
1578 | );\r | |
99c9b949 PA |
1579 | if (EFI_ERROR (Status)) {\r |
1580 | goto Error_Find_Fe;\r | |
1581 | }\r | |
1582 | \r | |
1583 | //\r | |
1584 | // Make sure that both Parent's FE/EFE and found FE/EFE are not equal.\r | |
1585 | //\r | |
1436aea4 MK |
1586 | if (CompareMem (\r |
1587 | (VOID *)Parent->FileEntry,\r | |
1588 | (VOID *)CompareFileEntry,\r | |
1589 | Volume->FileEntrySize\r | |
1590 | ) != 0)\r | |
1591 | {\r | |
99c9b949 PA |
1592 | File->FileEntry = CompareFileEntry;\r |
1593 | } else {\r | |
1594 | FreePool ((VOID *)FileIdentifierDesc);\r | |
1595 | FreePool ((VOID *)CompareFileEntry);\r | |
1596 | Status = EFI_NOT_FOUND;\r | |
1597 | }\r | |
1598 | }\r | |
1599 | }\r | |
1600 | \r | |
1601 | return Status;\r | |
1602 | \r | |
1603 | Error_Find_Fe:\r | |
1604 | FreePool ((VOID *)FileIdentifierDesc);\r | |
1605 | \r | |
1606 | return Status;\r | |
1607 | }\r | |
1608 | \r | |
1609 | /**\r | |
1610 | Read volume information on a medium which contains a valid UDF file system.\r | |
1611 | \r | |
1612 | @param[in] BlockIo BlockIo interface.\r | |
1613 | @param[in] DiskIo DiskIo interface.\r | |
1614 | @param[out] Volume UDF volume information structure.\r | |
1615 | \r | |
1616 | @retval EFI_SUCCESS Volume information read.\r | |
1617 | @retval EFI_NO_MEDIA The device has no media.\r | |
1618 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
1619 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
1620 | @retval EFI_OUT_OF_RESOURCES The volume was not read due to lack of resources.\r | |
1621 | \r | |
1622 | **/\r | |
1623 | EFI_STATUS\r | |
1624 | ReadUdfVolumeInformation (\r | |
1625 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
1626 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
1627 | OUT UDF_VOLUME_INFO *Volume\r | |
1628 | )\r | |
1629 | {\r | |
1436aea4 | 1630 | EFI_STATUS Status;\r |
99c9b949 | 1631 | \r |
baaa3cee PA |
1632 | //\r |
1633 | // Read all necessary UDF volume information and keep it private to the driver\r | |
1634 | //\r | |
99c9b949 | 1635 | Status = ReadVolumeFileStructure (\r |
1436aea4 MK |
1636 | BlockIo,\r |
1637 | DiskIo,\r | |
1638 | Volume\r | |
1639 | );\r | |
99c9b949 PA |
1640 | if (EFI_ERROR (Status)) {\r |
1641 | return Status;\r | |
1642 | }\r | |
1643 | \r | |
baaa3cee PA |
1644 | //\r |
1645 | // Find File Set Descriptor\r | |
1646 | //\r | |
1647 | Status = FindFileSetDescriptor (BlockIo, DiskIo, Volume);\r | |
99c9b949 | 1648 | if (EFI_ERROR (Status)) {\r |
baaa3cee | 1649 | return Status;\r |
99c9b949 PA |
1650 | }\r |
1651 | \r | |
1652 | return Status;\r | |
1653 | }\r | |
1654 | \r | |
1655 | /**\r | |
1656 | Find the root directory on an UDF volume.\r | |
1657 | \r | |
1658 | @param[in] BlockIo BlockIo interface.\r | |
1659 | @param[in] DiskIo DiskIo interface.\r | |
1660 | @param[in] Volume UDF volume information structure.\r | |
1661 | @param[out] File Root directory file.\r | |
1662 | \r | |
1663 | @retval EFI_SUCCESS Root directory found.\r | |
1664 | @retval EFI_NO_MEDIA The device has no media.\r | |
1665 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
1666 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
1667 | @retval EFI_OUT_OF_RESOURCES The root directory was not found due to lack of\r | |
1668 | resources.\r | |
1669 | \r | |
1670 | **/\r | |
1671 | EFI_STATUS\r | |
1672 | FindRootDirectory (\r | |
1673 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
1674 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
1675 | IN UDF_VOLUME_INFO *Volume,\r | |
1676 | OUT UDF_FILE_INFO *File\r | |
1677 | )\r | |
1678 | {\r | |
1679 | EFI_STATUS Status;\r | |
1680 | UDF_FILE_INFO Parent;\r | |
1681 | \r | |
1682 | Status = FindFileEntry (\r | |
1436aea4 MK |
1683 | BlockIo,\r |
1684 | DiskIo,\r | |
1685 | Volume,\r | |
1686 | &Volume->FileSetDesc.RootDirectoryIcb,\r | |
1687 | &File->FileEntry\r | |
1688 | );\r | |
99c9b949 PA |
1689 | if (EFI_ERROR (Status)) {\r |
1690 | return Status;\r | |
1691 | }\r | |
1692 | \r | |
1436aea4 | 1693 | Parent.FileEntry = File->FileEntry;\r |
99c9b949 PA |
1694 | Parent.FileIdentifierDesc = NULL;\r |
1695 | \r | |
1696 | Status = FindFile (\r | |
1436aea4 MK |
1697 | BlockIo,\r |
1698 | DiskIo,\r | |
1699 | Volume,\r | |
1700 | L"\\",\r | |
1701 | NULL,\r | |
1702 | &Parent,\r | |
1703 | &Volume->FileSetDesc.RootDirectoryIcb,\r | |
1704 | File\r | |
1705 | );\r | |
99c9b949 PA |
1706 | if (EFI_ERROR (Status)) {\r |
1707 | FreePool (File->FileEntry);\r | |
1708 | }\r | |
1709 | \r | |
1710 | return Status;\r | |
1711 | }\r | |
1712 | \r | |
1713 | /**\r | |
1714 | Find either a File Entry or a Extended File Entry from a given ICB.\r | |
1715 | \r | |
1716 | @param[in] BlockIo BlockIo interface.\r | |
1717 | @param[in] DiskIo DiskIo interface.\r | |
1718 | @param[in] Volume UDF volume information structure.\r | |
1719 | @param[in] Icb ICB of the FID.\r | |
1720 | @param[out] FileEntry File Entry or Extended File Entry.\r | |
1721 | \r | |
1722 | @retval EFI_SUCCESS File Entry or Extended File Entry found.\r | |
1723 | @retval EFI_NO_MEDIA The device has no media.\r | |
1724 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
1725 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
1726 | @retval EFI_OUT_OF_RESOURCES The FE/EFE entry was not found due to lack of\r | |
1727 | resources.\r | |
1728 | \r | |
1729 | **/\r | |
1730 | EFI_STATUS\r | |
1731 | FindFileEntry (\r | |
1732 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
1733 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
1734 | IN UDF_VOLUME_INFO *Volume,\r | |
1735 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *Icb,\r | |
1736 | OUT VOID **FileEntry\r | |
1737 | )\r | |
1738 | {\r | |
baaa3cee PA |
1739 | EFI_STATUS Status;\r |
1740 | UINT64 Lsn;\r | |
1741 | UINT32 LogicalBlockSize;\r | |
1742 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r | |
7a966348 | 1743 | VOID *ReadBuffer;\r |
99c9b949 | 1744 | \r |
6086569e HW |
1745 | Status = GetLongAdLsn (Volume, Icb, &Lsn);\r |
1746 | if (EFI_ERROR (Status)) {\r | |
1747 | return Status;\r | |
1748 | }\r | |
1749 | \r | |
1436aea4 | 1750 | LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;\r |
99c9b949 | 1751 | \r |
7a966348 HW |
1752 | ReadBuffer = AllocateZeroPool (Volume->FileEntrySize);\r |
1753 | if (ReadBuffer == NULL) {\r | |
99c9b949 PA |
1754 | return EFI_OUT_OF_RESOURCES;\r |
1755 | }\r | |
1756 | \r | |
1757 | //\r | |
1758 | // Read extent.\r | |
1759 | //\r | |
1760 | Status = DiskIo->ReadDisk (\r | |
1436aea4 MK |
1761 | DiskIo,\r |
1762 | BlockIo->Media->MediaId,\r | |
1763 | MultU64x32 (Lsn, LogicalBlockSize),\r | |
1764 | Volume->FileEntrySize,\r | |
1765 | ReadBuffer\r | |
1766 | );\r | |
99c9b949 PA |
1767 | if (EFI_ERROR (Status)) {\r |
1768 | goto Error_Read_Disk_Blk;\r | |
1769 | }\r | |
1770 | \r | |
7a966348 | 1771 | DescriptorTag = ReadBuffer;\r |
baaa3cee | 1772 | \r |
99c9b949 PA |
1773 | //\r |
1774 | // Check if the read extent contains a valid Tag Identifier for the expected\r | |
1775 | // FE/EFE.\r | |
1776 | //\r | |
1436aea4 MK |
1777 | if ((DescriptorTag->TagIdentifier != UdfFileEntry) &&\r |
1778 | (DescriptorTag->TagIdentifier != UdfExtendedFileEntry))\r | |
1779 | {\r | |
99c9b949 PA |
1780 | Status = EFI_VOLUME_CORRUPTED;\r |
1781 | goto Error_Invalid_Fe;\r | |
1782 | }\r | |
1783 | \r | |
7a966348 | 1784 | *FileEntry = ReadBuffer;\r |
99c9b949 PA |
1785 | return EFI_SUCCESS;\r |
1786 | \r | |
1787 | Error_Invalid_Fe:\r | |
1788 | Error_Read_Disk_Blk:\r | |
7a966348 | 1789 | FreePool (ReadBuffer);\r |
99c9b949 PA |
1790 | \r |
1791 | return Status;\r | |
1792 | }\r | |
1793 | \r | |
1794 | /**\r | |
1795 | Find a file given its absolute path on an UDF volume.\r | |
1796 | \r | |
1797 | @param[in] BlockIo BlockIo interface.\r | |
1798 | @param[in] DiskIo DiskIo interface.\r | |
1799 | @param[in] Volume UDF volume information structure.\r | |
1800 | @param[in] FilePath File's absolute path.\r | |
1801 | @param[in] Root Root directory file.\r | |
1802 | @param[in] Parent Parent directory file.\r | |
077f8c43 | 1803 | @param[in] Icb ICB of Parent.\r |
99c9b949 PA |
1804 | @param[out] File Found file.\r |
1805 | \r | |
077f8c43 | 1806 | @retval EFI_SUCCESS FilePath was found.\r |
99c9b949 PA |
1807 | @retval EFI_NO_MEDIA The device has no media.\r |
1808 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
1809 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
077f8c43 | 1810 | @retval EFI_OUT_OF_RESOURCES The FilePath file was not found due to lack of\r |
99c9b949 PA |
1811 | resources.\r |
1812 | \r | |
1813 | **/\r | |
1814 | EFI_STATUS\r | |
1815 | FindFile (\r | |
1816 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
1817 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
1818 | IN UDF_VOLUME_INFO *Volume,\r | |
1819 | IN CHAR16 *FilePath,\r | |
1820 | IN UDF_FILE_INFO *Root,\r | |
1821 | IN UDF_FILE_INFO *Parent,\r | |
1822 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *Icb,\r | |
1823 | OUT UDF_FILE_INFO *File\r | |
1824 | )\r | |
1825 | {\r | |
1826 | EFI_STATUS Status;\r | |
1827 | CHAR16 FileName[UDF_FILENAME_LENGTH];\r | |
1828 | CHAR16 *FileNamePointer;\r | |
1829 | UDF_FILE_INFO PreviousFile;\r | |
1830 | VOID *FileEntry;\r | |
1831 | \r | |
1832 | Status = EFI_NOT_FOUND;\r | |
1833 | \r | |
1834 | CopyMem ((VOID *)&PreviousFile, (VOID *)Parent, sizeof (UDF_FILE_INFO));\r | |
1835 | while (*FilePath != L'\0') {\r | |
1836 | FileNamePointer = FileName;\r | |
1837 | while (*FilePath != L'\0' && *FilePath != L'\\') {\r | |
b9ae1705 | 1838 | if ((((UINTN)FileNamePointer - (UINTN)FileName) / sizeof (CHAR16)) >=\r |
1436aea4 MK |
1839 | (ARRAY_SIZE (FileName) - 1))\r |
1840 | {\r | |
b9ae1705 HW |
1841 | return EFI_NOT_FOUND;\r |
1842 | }\r | |
1843 | \r | |
99c9b949 PA |
1844 | *FileNamePointer++ = *FilePath++;\r |
1845 | }\r | |
1846 | \r | |
1847 | *FileNamePointer = L'\0';\r | |
1848 | if (FileName[0] == L'\0') {\r | |
1849 | //\r | |
1850 | // Open root directory.\r | |
1851 | //\r | |
1852 | if (Root == NULL) {\r | |
1853 | //\r | |
1854 | // There is no file found for the root directory yet. So, find only its\r | |
1855 | // FID by now.\r | |
1856 | //\r | |
1857 | // See UdfOpenVolume() function.\r | |
1858 | //\r | |
1436aea4 MK |
1859 | Status = InternalFindFile (\r |
1860 | BlockIo,\r | |
1861 | DiskIo,\r | |
1862 | Volume,\r | |
1863 | L"\\",\r | |
1864 | &PreviousFile,\r | |
1865 | Icb,\r | |
1866 | File\r | |
1867 | );\r | |
99c9b949 PA |
1868 | } else {\r |
1869 | //\r | |
1870 | // We've already a file pointer (Root) for the root directory. Duplicate\r | |
1871 | // its FE/EFE and FID descriptors.\r | |
1872 | //\r | |
99c9b949 | 1873 | Status = EFI_SUCCESS;\r |
ebb12f51 HW |
1874 | DuplicateFe (BlockIo, Volume, Root->FileEntry, &File->FileEntry);\r |
1875 | if (File->FileEntry == NULL) {\r | |
1876 | Status = EFI_OUT_OF_RESOURCES;\r | |
1877 | } else {\r | |
1878 | //\r | |
1879 | // File->FileEntry is not NULL.\r | |
1880 | //\r | |
1881 | DuplicateFid (Root->FileIdentifierDesc, &File->FileIdentifierDesc);\r | |
1882 | if (File->FileIdentifierDesc == NULL) {\r | |
1883 | FreePool (File->FileEntry);\r | |
1884 | Status = EFI_OUT_OF_RESOURCES;\r | |
1885 | }\r | |
1886 | }\r | |
99c9b949 PA |
1887 | }\r |
1888 | } else {\r | |
1889 | //\r | |
1890 | // No root directory. Find filename from the current directory.\r | |
1891 | //\r | |
1436aea4 MK |
1892 | Status = InternalFindFile (\r |
1893 | BlockIo,\r | |
1894 | DiskIo,\r | |
1895 | Volume,\r | |
1896 | FileName,\r | |
1897 | &PreviousFile,\r | |
1898 | Icb,\r | |
1899 | File\r | |
1900 | );\r | |
99c9b949 PA |
1901 | }\r |
1902 | \r | |
1903 | if (EFI_ERROR (Status)) {\r | |
1904 | return Status;\r | |
1905 | }\r | |
1906 | \r | |
1907 | //\r | |
1908 | // If the found file is a symlink, then find its respective FE/EFE and\r | |
1909 | // FID descriptors.\r | |
1910 | //\r | |
baaa3cee | 1911 | if (FE_ICB_FILE_TYPE (File->FileEntry) == UdfFileEntrySymlink) {\r |
99c9b949 PA |
1912 | FreePool ((VOID *)File->FileIdentifierDesc);\r |
1913 | \r | |
1914 | FileEntry = File->FileEntry;\r | |
1915 | \r | |
1436aea4 MK |
1916 | Status = ResolveSymlink (\r |
1917 | BlockIo,\r | |
1918 | DiskIo,\r | |
1919 | Volume,\r | |
1920 | &PreviousFile,\r | |
1921 | FileEntry,\r | |
1922 | File\r | |
1923 | );\r | |
99c9b949 PA |
1924 | \r |
1925 | FreePool (FileEntry);\r | |
1926 | \r | |
1927 | if (EFI_ERROR (Status)) {\r | |
1928 | return Status;\r | |
1929 | }\r | |
1930 | }\r | |
1931 | \r | |
1436aea4 MK |
1932 | if (CompareMem (\r |
1933 | (VOID *)&PreviousFile,\r | |
1934 | (VOID *)Parent,\r | |
1935 | sizeof (UDF_FILE_INFO)\r | |
1936 | ) != 0)\r | |
1937 | {\r | |
99c9b949 PA |
1938 | CleanupFileInformation (&PreviousFile);\r |
1939 | }\r | |
1940 | \r | |
1941 | CopyMem ((VOID *)&PreviousFile, (VOID *)File, sizeof (UDF_FILE_INFO));\r | |
1436aea4 | 1942 | if ((*FilePath != L'\0') && (*FilePath == L'\\')) {\r |
99c9b949 PA |
1943 | FilePath++;\r |
1944 | }\r | |
1945 | }\r | |
1946 | \r | |
1947 | return Status;\r | |
1948 | }\r | |
1949 | \r | |
1950 | /**\r | |
1951 | Read a directory entry at a time on an UDF volume.\r | |
1952 | \r | |
1953 | @param[in] BlockIo BlockIo interface.\r | |
1954 | @param[in] DiskIo DiskIo interface.\r | |
1955 | @param[in] Volume UDF volume information structure.\r | |
1956 | @param[in] ParentIcb ICB of the parent file.\r | |
1957 | @param[in] FileEntryData FE/EFE of the parent file.\r | |
077f8c43 | 1958 | @param[in, out] ReadDirInfo Next read directory listing structure\r |
99c9b949 PA |
1959 | information.\r |
1960 | @param[out] FoundFid File Identifier Descriptor pointer.\r | |
1961 | \r | |
1962 | @retval EFI_SUCCESS Directory entry read.\r | |
1963 | @retval EFI_UNSUPPORTED Extended Allocation Descriptors not supported.\r | |
1964 | @retval EFI_NO_MEDIA The device has no media.\r | |
1965 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
1966 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
1967 | @retval EFI_OUT_OF_RESOURCES The directory entry was not read due to lack of\r | |
1968 | resources.\r | |
1969 | \r | |
1970 | **/\r | |
1971 | EFI_STATUS\r | |
1972 | ReadDirectoryEntry (\r | |
1973 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
1974 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
1975 | IN UDF_VOLUME_INFO *Volume,\r | |
1976 | IN UDF_LONG_ALLOCATION_DESCRIPTOR *ParentIcb,\r | |
1977 | IN VOID *FileEntryData,\r | |
1978 | IN OUT UDF_READ_DIRECTORY_INFO *ReadDirInfo,\r | |
1979 | OUT UDF_FILE_IDENTIFIER_DESCRIPTOR **FoundFid\r | |
1980 | )\r | |
1981 | {\r | |
1982 | EFI_STATUS Status;\r | |
1983 | UDF_READ_FILE_INFO ReadFileInfo;\r | |
1984 | UDF_FILE_IDENTIFIER_DESCRIPTOR *FileIdentifierDesc;\r | |
1985 | \r | |
1986 | if (ReadDirInfo->DirectoryData == NULL) {\r | |
1987 | //\r | |
1988 | // The directory's recorded data has not been read yet. So let's cache it\r | |
1989 | // into memory and the next calls won't need to read it again.\r | |
1990 | //\r | |
880ec683 | 1991 | ReadFileInfo.Flags = ReadFileAllocateAndRead;\r |
99c9b949 PA |
1992 | \r |
1993 | Status = ReadFile (\r | |
1436aea4 MK |
1994 | BlockIo,\r |
1995 | DiskIo,\r | |
1996 | Volume,\r | |
1997 | ParentIcb,\r | |
1998 | FileEntryData,\r | |
1999 | &ReadFileInfo\r | |
2000 | );\r | |
99c9b949 PA |
2001 | if (EFI_ERROR (Status)) {\r |
2002 | return Status;\r | |
2003 | }\r | |
2004 | \r | |
2005 | //\r | |
2006 | // Fill in ReadDirInfo structure with the read directory's data information.\r | |
2007 | //\r | |
1436aea4 | 2008 | ReadDirInfo->DirectoryData = ReadFileInfo.FileData;\r |
99c9b949 PA |
2009 | ReadDirInfo->DirectoryLength = ReadFileInfo.ReadLength;\r |
2010 | }\r | |
2011 | \r | |
2012 | do {\r | |
2013 | if (ReadDirInfo->FidOffset >= ReadDirInfo->DirectoryLength) {\r | |
2014 | //\r | |
2015 | // There are no longer FIDs for this directory. By returning\r | |
2016 | // EFI_DEVICE_ERROR to the callee will indicate end of directory\r | |
2017 | // listening.\r | |
2018 | //\r | |
2019 | return EFI_DEVICE_ERROR;\r | |
2020 | }\r | |
2021 | \r | |
2022 | //\r | |
2023 | // Get FID for this entry.\r | |
2024 | //\r | |
1436aea4 MK |
2025 | FileIdentifierDesc = GET_FID_FROM_ADS (\r |
2026 | ReadDirInfo->DirectoryData,\r | |
2027 | ReadDirInfo->FidOffset\r | |
2028 | );\r | |
99c9b949 PA |
2029 | //\r |
2030 | // Update FidOffset to point to next FID.\r | |
2031 | //\r | |
2032 | ReadDirInfo->FidOffset += GetFidDescriptorLength (FileIdentifierDesc);\r | |
baaa3cee | 2033 | } while (FileIdentifierDesc->FileCharacteristics & DELETED_FILE);\r |
99c9b949 PA |
2034 | \r |
2035 | DuplicateFid (FileIdentifierDesc, FoundFid);\r | |
ebb12f51 HW |
2036 | if (*FoundFid == NULL) {\r |
2037 | return EFI_OUT_OF_RESOURCES;\r | |
2038 | }\r | |
99c9b949 PA |
2039 | \r |
2040 | return EFI_SUCCESS;\r | |
2041 | }\r | |
2042 | \r | |
2043 | /**\r | |
2044 | Get a filename (encoded in OSTA-compressed format) from a File Identifier\r | |
2045 | Descriptor on an UDF volume.\r | |
2046 | \r | |
b9ae1705 HW |
2047 | @attention This is boundary function that may receive untrusted input.\r |
2048 | @attention The input is from FileSystem.\r | |
2049 | \r | |
2050 | The File Identifier Descriptor is external input, so this routine will do\r | |
2051 | basic validation for File Identifier Descriptor and report status.\r | |
2052 | \r | |
99c9b949 | 2053 | @param[in] FileIdentifierDesc File Identifier Descriptor pointer.\r |
b9ae1705 HW |
2054 | @param[in] CharMax The maximum number of FileName Unicode char,\r |
2055 | including terminating null char.\r | |
99c9b949 PA |
2056 | @param[out] FileName Decoded filename.\r |
2057 | \r | |
2058 | @retval EFI_SUCCESS Filename decoded and read.\r | |
2059 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
b9ae1705 HW |
2060 | @retval EFI_BUFFER_TOO_SMALL The string buffer FileName cannot hold the\r |
2061 | decoded filename.\r | |
99c9b949 PA |
2062 | **/\r |
2063 | EFI_STATUS\r | |
2064 | GetFileNameFromFid (\r | |
2065 | IN UDF_FILE_IDENTIFIER_DESCRIPTOR *FileIdentifierDesc,\r | |
b9ae1705 | 2066 | IN UINTN CharMax,\r |
99c9b949 PA |
2067 | OUT CHAR16 *FileName\r |
2068 | )\r | |
2069 | {\r | |
1436aea4 MK |
2070 | UINT8 *OstaCompressed;\r |
2071 | UINT8 CompressionId;\r | |
2072 | UINT8 Length;\r | |
2073 | UINTN Index;\r | |
2074 | CHAR16 *FileNameBak;\r | |
b9ae1705 HW |
2075 | \r |
2076 | if (CharMax == 0) {\r | |
2077 | return EFI_BUFFER_TOO_SMALL;\r | |
2078 | }\r | |
99c9b949 PA |
2079 | \r |
2080 | OstaCompressed =\r | |
2081 | (UINT8 *)(\r | |
1436aea4 MK |
2082 | (UINT8 *)FileIdentifierDesc->Data +\r |
2083 | FileIdentifierDesc->LengthOfImplementationUse\r | |
2084 | );\r | |
99c9b949 PA |
2085 | \r |
2086 | CompressionId = OstaCompressed[0];\r | |
2087 | if (!IS_VALID_COMPRESSION_ID (CompressionId)) {\r | |
2088 | return EFI_VOLUME_CORRUPTED;\r | |
2089 | }\r | |
2090 | \r | |
b9ae1705 HW |
2091 | FileNameBak = FileName;\r |
2092 | \r | |
99c9b949 PA |
2093 | //\r |
2094 | // Decode filename.\r | |
2095 | //\r | |
2096 | Length = FileIdentifierDesc->LengthOfFileIdentifier;\r | |
b9ae1705 HW |
2097 | if (CompressionId == 16) {\r |
2098 | if (((UINTN)Length >> 1) > CharMax) {\r | |
2099 | return EFI_BUFFER_TOO_SMALL;\r | |
2100 | }\r | |
2101 | } else {\r | |
2102 | if ((Length != 0) && ((UINTN)Length - 1 > CharMax)) {\r | |
2103 | return EFI_BUFFER_TOO_SMALL;\r | |
2104 | }\r | |
2105 | }\r | |
2106 | \r | |
99c9b949 PA |
2107 | for (Index = 1; Index < Length; Index++) {\r |
2108 | if (CompressionId == 16) {\r | |
2109 | *FileName = OstaCompressed[Index++] << 8;\r | |
2110 | } else {\r | |
2111 | *FileName = 0;\r | |
2112 | }\r | |
2113 | \r | |
2114 | if (Index < Length) {\r | |
fedec0a3 | 2115 | *FileName |= (CHAR16)(OstaCompressed[Index]);\r |
99c9b949 PA |
2116 | }\r |
2117 | \r | |
2118 | FileName++;\r | |
2119 | }\r | |
2120 | \r | |
b9ae1705 HW |
2121 | Index = ((UINTN)FileName - (UINTN)FileNameBak) / sizeof (CHAR16);\r |
2122 | if (Index > CharMax - 1) {\r | |
2123 | Index = CharMax - 1;\r | |
2124 | }\r | |
1436aea4 | 2125 | \r |
b9ae1705 | 2126 | FileNameBak[Index] = L'\0';\r |
99c9b949 PA |
2127 | \r |
2128 | return EFI_SUCCESS;\r | |
2129 | }\r | |
2130 | \r | |
2131 | /**\r | |
2132 | Resolve a symlink file on an UDF volume.\r | |
2133 | \r | |
b9ae1705 HW |
2134 | @attention This is boundary function that may receive untrusted input.\r |
2135 | @attention The input is from FileSystem.\r | |
2136 | \r | |
2137 | The Path Component is external input, so this routine will do basic\r | |
2138 | validation for Path Component and report status.\r | |
2139 | \r | |
99c9b949 PA |
2140 | @param[in] BlockIo BlockIo interface.\r |
2141 | @param[in] DiskIo DiskIo interface.\r | |
2142 | @param[in] Volume UDF volume information structure.\r | |
2143 | @param[in] Parent Parent file.\r | |
2144 | @param[in] FileEntryData FE/EFE structure pointer.\r | |
2145 | @param[out] File Resolved file.\r | |
2146 | \r | |
2147 | @retval EFI_SUCCESS Symlink file resolved.\r | |
2148 | @retval EFI_UNSUPPORTED Extended Allocation Descriptors not supported.\r | |
2149 | @retval EFI_NO_MEDIA The device has no media.\r | |
2150 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
2151 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
2152 | @retval EFI_OUT_OF_RESOURCES The symlink file was not resolved due to lack of\r | |
2153 | resources.\r | |
2154 | \r | |
2155 | **/\r | |
2156 | EFI_STATUS\r | |
2157 | ResolveSymlink (\r | |
2158 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
2159 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
2160 | IN UDF_VOLUME_INFO *Volume,\r | |
2161 | IN UDF_FILE_INFO *Parent,\r | |
2162 | IN VOID *FileEntryData,\r | |
2163 | OUT UDF_FILE_INFO *File\r | |
2164 | )\r | |
2165 | {\r | |
2166 | EFI_STATUS Status;\r | |
2167 | UDF_READ_FILE_INFO ReadFileInfo;\r | |
2168 | UINT8 *Data;\r | |
2169 | UINT64 Length;\r | |
2170 | UINT8 *EndData;\r | |
2171 | UDF_PATH_COMPONENT *PathComp;\r | |
2172 | UINT8 PathCompLength;\r | |
2173 | CHAR16 FileName[UDF_FILENAME_LENGTH];\r | |
32492fee | 2174 | CHAR16 *Char;\r |
99c9b949 PA |
2175 | UINTN Index;\r |
2176 | UINT8 CompressionId;\r | |
2177 | UDF_FILE_INFO PreviousFile;\r | |
27b9cb33 HW |
2178 | BOOLEAN NotParent;\r |
2179 | BOOLEAN NotFile;\r | |
99c9b949 | 2180 | \r |
bfb8c64c HW |
2181 | ZeroMem ((VOID *)File, sizeof (UDF_FILE_INFO));\r |
2182 | \r | |
99c9b949 PA |
2183 | //\r |
2184 | // Symlink files on UDF volumes do not contain so much data other than\r | |
2185 | // Path Components which resolves to real filenames, so it's OK to read in\r | |
2186 | // all its data here -- usually the data will be inline with the FE/EFE for\r | |
2187 | // lower filenames.\r | |
2188 | //\r | |
880ec683 | 2189 | ReadFileInfo.Flags = ReadFileAllocateAndRead;\r |
99c9b949 PA |
2190 | \r |
2191 | Status = ReadFile (\r | |
1436aea4 MK |
2192 | BlockIo,\r |
2193 | DiskIo,\r | |
2194 | Volume,\r | |
2195 | &Parent->FileIdentifierDesc->Icb,\r | |
2196 | FileEntryData,\r | |
2197 | &ReadFileInfo\r | |
2198 | );\r | |
99c9b949 PA |
2199 | if (EFI_ERROR (Status)) {\r |
2200 | return Status;\r | |
2201 | }\r | |
2202 | \r | |
2203 | Length = ReadFileInfo.ReadLength;\r | |
2204 | \r | |
1436aea4 | 2205 | Data = (UINT8 *)ReadFileInfo.FileData;\r |
99c9b949 PA |
2206 | EndData = Data + Length;\r |
2207 | \r | |
2208 | CopyMem ((VOID *)&PreviousFile, (VOID *)Parent, sizeof (UDF_FILE_INFO));\r | |
2209 | \r | |
1436aea4 | 2210 | for ( ; ;) {\r |
99c9b949 PA |
2211 | PathComp = (UDF_PATH_COMPONENT *)Data;\r |
2212 | \r | |
2213 | PathCompLength = PathComp->LengthOfComponentIdentifier;\r | |
2214 | \r | |
2215 | switch (PathComp->ComponentType) {\r | |
1436aea4 | 2216 | case 1:\r |
99c9b949 PA |
2217 | //\r |
2218 | // This Path Component specifies the root directory hierarchy subject to\r | |
2219 | // agreement between the originator and recipient of the medium. Skip it.\r | |
2220 | //\r | |
2221 | // Fall through.\r | |
2222 | //\r | |
1436aea4 MK |
2223 | case 2:\r |
2224 | //\r | |
2225 | // "\\." of the current directory. Read next Path Component.\r | |
2226 | //\r | |
2227 | goto Next_Path_Component;\r | |
2228 | case 3:\r | |
2229 | //\r | |
2230 | // ".." (parent directory). Go to it.\r | |
2231 | //\r | |
2232 | CopyMem ((VOID *)FileName, L"..", 6);\r | |
2233 | break;\r | |
2234 | case 4:\r | |
2235 | //\r | |
2236 | // "." (current file). Duplicate both FE/EFE and FID of this file.\r | |
2237 | //\r | |
2238 | DuplicateFe (BlockIo, Volume, PreviousFile.FileEntry, &File->FileEntry);\r | |
2239 | if (File->FileEntry == NULL) {\r | |
2240 | Status = EFI_OUT_OF_RESOURCES;\r | |
2241 | goto Error_Find_File;\r | |
2242 | }\r | |
ebb12f51 | 2243 | \r |
1436aea4 MK |
2244 | DuplicateFid (\r |
2245 | PreviousFile.FileIdentifierDesc,\r | |
2246 | &File->FileIdentifierDesc\r | |
2247 | );\r | |
2248 | if (File->FileIdentifierDesc == NULL) {\r | |
2249 | FreePool (File->FileEntry);\r | |
2250 | Status = EFI_OUT_OF_RESOURCES;\r | |
2251 | goto Error_Find_File;\r | |
2252 | }\r | |
99c9b949 | 2253 | \r |
1436aea4 MK |
2254 | goto Next_Path_Component;\r |
2255 | case 5:\r | |
2256 | //\r | |
2257 | // This Path Component identifies an object, either a file or a\r | |
2258 | // directory or an alias.\r | |
2259 | //\r | |
2260 | // Decode it from the compressed data in ComponentIdentifier and find\r | |
2261 | // respective path.\r | |
2262 | //\r | |
2263 | CompressionId = PathComp->ComponentIdentifier[0];\r | |
2264 | if (!IS_VALID_COMPRESSION_ID (CompressionId)) {\r | |
2265 | return EFI_VOLUME_CORRUPTED;\r | |
2266 | }\r | |
89f75aa0 | 2267 | \r |
1436aea4 MK |
2268 | if ((UINTN)PathComp->ComponentIdentifier + PathCompLength > (UINTN)EndData) {\r |
2269 | return EFI_VOLUME_CORRUPTED;\r | |
99c9b949 PA |
2270 | }\r |
2271 | \r | |
1436aea4 MK |
2272 | Char = FileName;\r |
2273 | for (Index = 1; Index < PathCompLength; Index++) {\r | |
2274 | if (CompressionId == 16) {\r | |
2275 | *Char = *(UINT8 *)((UINT8 *)PathComp->ComponentIdentifier +\r | |
2276 | Index) << 8;\r | |
2277 | Index++;\r | |
2278 | } else {\r | |
2279 | if (Index > ARRAY_SIZE (FileName)) {\r | |
2280 | return EFI_UNSUPPORTED;\r | |
2281 | }\r | |
2282 | \r | |
2283 | *Char = 0;\r | |
2284 | }\r | |
2285 | \r | |
2286 | if (Index < Length) {\r | |
2287 | *Char |= (CHAR16)(*(UINT8 *)((UINT8 *)PathComp->ComponentIdentifier + Index));\r | |
2288 | }\r | |
2289 | \r | |
2290 | Char++;\r | |
99c9b949 PA |
2291 | }\r |
2292 | \r | |
1436aea4 MK |
2293 | Index = ((UINTN)Char - (UINTN)FileName) / sizeof (CHAR16);\r |
2294 | if (Index > ARRAY_SIZE (FileName) - 1) {\r | |
2295 | Index = ARRAY_SIZE (FileName) - 1;\r | |
2296 | }\r | |
99c9b949 | 2297 | \r |
1436aea4 MK |
2298 | FileName[Index] = L'\0';\r |
2299 | break;\r | |
2300 | default:\r | |
2301 | //\r | |
2302 | // According to the ECMA-167 standard (3rd Edition - June 1997), Section\r | |
2303 | // 14.16.1.1, all other values are reserved.\r | |
2304 | //\r | |
2305 | Status = EFI_VOLUME_CORRUPTED;\r | |
2306 | goto Error_Find_File;\r | |
99c9b949 PA |
2307 | }\r |
2308 | \r | |
2309 | //\r | |
2310 | // Find file from the read filename in symlink's file data.\r | |
2311 | //\r | |
2312 | Status = InternalFindFile (\r | |
1436aea4 MK |
2313 | BlockIo,\r |
2314 | DiskIo,\r | |
2315 | Volume,\r | |
2316 | FileName,\r | |
2317 | &PreviousFile,\r | |
2318 | NULL,\r | |
2319 | File\r | |
2320 | );\r | |
99c9b949 PA |
2321 | if (EFI_ERROR (Status)) {\r |
2322 | goto Error_Find_File;\r | |
2323 | }\r | |
2324 | \r | |
1436aea4 | 2325 | Next_Path_Component:\r |
99c9b949 PA |
2326 | Data += sizeof (UDF_PATH_COMPONENT) + PathCompLength;\r |
2327 | if (Data >= EndData) {\r | |
2328 | break;\r | |
2329 | }\r | |
2330 | \r | |
bfb8c64c HW |
2331 | //\r |
2332 | // Check the content in the file info pointed by File.\r | |
2333 | //\r | |
2334 | if ((File->FileEntry == NULL) || (File->FileIdentifierDesc == NULL)) {\r | |
2335 | Status = EFI_VOLUME_CORRUPTED;\r | |
2336 | goto Error_Find_File;\r | |
2337 | }\r | |
2338 | \r | |
1436aea4 MK |
2339 | NotParent = (CompareMem (\r |
2340 | (VOID *)&PreviousFile,\r | |
2341 | (VOID *)Parent,\r | |
2342 | sizeof (UDF_FILE_INFO)\r | |
2343 | ) != 0);\r | |
2344 | NotFile = (CompareMem (\r | |
2345 | (VOID *)&PreviousFile,\r | |
2346 | (VOID *)File,\r | |
2347 | sizeof (UDF_FILE_INFO)\r | |
2348 | ) != 0);\r | |
27b9cb33 HW |
2349 | \r |
2350 | if (NotParent && NotFile) {\r | |
99c9b949 PA |
2351 | CleanupFileInformation (&PreviousFile);\r |
2352 | }\r | |
2353 | \r | |
27b9cb33 HW |
2354 | if (NotFile) {\r |
2355 | CopyMem ((VOID *)&PreviousFile, (VOID *)File, sizeof (UDF_FILE_INFO));\r | |
2356 | }\r | |
99c9b949 PA |
2357 | }\r |
2358 | \r | |
2359 | //\r | |
2360 | // Unmap the symlink file.\r | |
2361 | //\r | |
2362 | FreePool (ReadFileInfo.FileData);\r | |
2363 | \r | |
bfb8c64c HW |
2364 | //\r |
2365 | // Check the content in the resolved file info.\r | |
2366 | //\r | |
2367 | if ((File->FileEntry == NULL) || (File->FileIdentifierDesc == NULL)) {\r | |
2368 | return EFI_VOLUME_CORRUPTED;\r | |
2369 | }\r | |
2370 | \r | |
99c9b949 PA |
2371 | return EFI_SUCCESS;\r |
2372 | \r | |
2373 | Error_Find_File:\r | |
1436aea4 MK |
2374 | if (CompareMem (\r |
2375 | (VOID *)&PreviousFile,\r | |
2376 | (VOID *)Parent,\r | |
2377 | sizeof (UDF_FILE_INFO)\r | |
2378 | ) != 0)\r | |
2379 | {\r | |
99c9b949 PA |
2380 | CleanupFileInformation (&PreviousFile);\r |
2381 | }\r | |
2382 | \r | |
2383 | FreePool (ReadFileInfo.FileData);\r | |
2384 | \r | |
2385 | return Status;\r | |
2386 | }\r | |
2387 | \r | |
99c9b949 PA |
2388 | /**\r |
2389 | Clean up in-memory UDF file information.\r | |
2390 | \r | |
2391 | @param[in] File File information pointer.\r | |
2392 | \r | |
2393 | **/\r | |
2394 | VOID\r | |
2395 | CleanupFileInformation (\r | |
1436aea4 | 2396 | IN UDF_FILE_INFO *File\r |
99c9b949 PA |
2397 | )\r |
2398 | {\r | |
2399 | if (File->FileEntry != NULL) {\r | |
2400 | FreePool (File->FileEntry);\r | |
2401 | }\r | |
1436aea4 | 2402 | \r |
99c9b949 PA |
2403 | if (File->FileIdentifierDesc != NULL) {\r |
2404 | FreePool ((VOID *)File->FileIdentifierDesc);\r | |
2405 | }\r | |
2406 | \r | |
2407 | ZeroMem ((VOID *)File, sizeof (UDF_FILE_INFO));\r | |
2408 | }\r | |
2409 | \r | |
2410 | /**\r | |
2411 | Find a file from its absolute path on an UDF volume.\r | |
2412 | \r | |
2413 | @param[in] BlockIo BlockIo interface.\r | |
2414 | @param[in] DiskIo DiskIo interface.\r | |
2415 | @param[in] Volume UDF volume information structure.\r | |
2416 | @param[in] File File information structure.\r | |
2417 | @param[out] Size Size of the file.\r | |
2418 | \r | |
077f8c43 | 2419 | @retval EFI_SUCCESS File size calculated and set in Size.\r |
99c9b949 PA |
2420 | @retval EFI_UNSUPPORTED Extended Allocation Descriptors not supported.\r |
2421 | @retval EFI_NO_MEDIA The device has no media.\r | |
2422 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
2423 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
2424 | @retval EFI_OUT_OF_RESOURCES The file size was not calculated due to lack of\r | |
2425 | resources.\r | |
2426 | \r | |
2427 | **/\r | |
2428 | EFI_STATUS\r | |
2429 | GetFileSize (\r | |
2430 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
2431 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
2432 | IN UDF_VOLUME_INFO *Volume,\r | |
2433 | IN UDF_FILE_INFO *File,\r | |
2434 | OUT UINT64 *Size\r | |
2435 | )\r | |
2436 | {\r | |
2437 | EFI_STATUS Status;\r | |
2438 | UDF_READ_FILE_INFO ReadFileInfo;\r | |
2439 | \r | |
880ec683 | 2440 | ReadFileInfo.Flags = ReadFileGetFileSize;\r |
99c9b949 PA |
2441 | \r |
2442 | Status = ReadFile (\r | |
1436aea4 MK |
2443 | BlockIo,\r |
2444 | DiskIo,\r | |
2445 | Volume,\r | |
2446 | &File->FileIdentifierDesc->Icb,\r | |
2447 | File->FileEntry,\r | |
2448 | &ReadFileInfo\r | |
2449 | );\r | |
99c9b949 PA |
2450 | if (EFI_ERROR (Status)) {\r |
2451 | return Status;\r | |
2452 | }\r | |
2453 | \r | |
2454 | *Size = ReadFileInfo.ReadLength;\r | |
2455 | \r | |
2456 | return EFI_SUCCESS;\r | |
2457 | }\r | |
2458 | \r | |
2459 | /**\r | |
2460 | Set information about a file on an UDF volume.\r | |
2461 | \r | |
2462 | @param[in] File File pointer.\r | |
2463 | @param[in] FileSize Size of the file.\r | |
2464 | @param[in] FileName Filename of the file.\r | |
077f8c43 | 2465 | @param[in, out] BufferSize Size of the returned file infomation.\r |
99c9b949 PA |
2466 | @param[out] Buffer Data of the returned file information.\r |
2467 | \r | |
2468 | @retval EFI_SUCCESS File information set.\r | |
2469 | @retval EFI_NO_MEDIA The device has no media.\r | |
2470 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
2471 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
2472 | @retval EFI_OUT_OF_RESOURCES The file information was not set due to lack of\r | |
2473 | resources.\r | |
2474 | \r | |
2475 | **/\r | |
2476 | EFI_STATUS\r | |
2477 | SetFileInfo (\r | |
2478 | IN UDF_FILE_INFO *File,\r | |
2479 | IN UINT64 FileSize,\r | |
2480 | IN CHAR16 *FileName,\r | |
2481 | IN OUT UINTN *BufferSize,\r | |
2482 | OUT VOID *Buffer\r | |
2483 | )\r | |
2484 | {\r | |
2485 | UINTN FileInfoLength;\r | |
2486 | EFI_FILE_INFO *FileInfo;\r | |
2487 | UDF_FILE_ENTRY *FileEntry;\r | |
2488 | UDF_EXTENDED_FILE_ENTRY *ExtendedFileEntry;\r | |
baaa3cee | 2489 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r |
99c9b949 PA |
2490 | \r |
2491 | //\r | |
2492 | // Calculate the needed size for the EFI_FILE_INFO structure.\r | |
2493 | //\r | |
12b83f56 | 2494 | FileInfoLength = sizeof (EFI_FILE_INFO) + ((FileName != NULL) ?\r |
99c9b949 PA |
2495 | StrSize (FileName) :\r |
2496 | sizeof (CHAR16));\r | |
2497 | if (*BufferSize < FileInfoLength) {\r | |
2498 | //\r | |
2499 | // The given Buffer has no size enough for EFI_FILE_INFO structure.\r | |
2500 | //\r | |
2501 | *BufferSize = FileInfoLength;\r | |
2502 | return EFI_BUFFER_TOO_SMALL;\r | |
2503 | }\r | |
2504 | \r | |
2505 | //\r | |
2506 | // Buffer now contains room enough to store EFI_FILE_INFO structure.\r | |
2507 | // Now, fill it in with all necessary information about the file.\r | |
2508 | //\r | |
1436aea4 MK |
2509 | FileInfo = (EFI_FILE_INFO *)Buffer;\r |
2510 | FileInfo->Size = FileInfoLength;\r | |
2511 | FileInfo->Attribute &= ~EFI_FILE_VALID_ATTR;\r | |
2512 | FileInfo->Attribute |= EFI_FILE_READ_ONLY;\r | |
99c9b949 PA |
2513 | \r |
2514 | if (IS_FID_DIRECTORY_FILE (File->FileIdentifierDesc)) {\r | |
2515 | FileInfo->Attribute |= EFI_FILE_DIRECTORY;\r | |
2516 | } else if (IS_FID_NORMAL_FILE (File->FileIdentifierDesc)) {\r | |
2517 | FileInfo->Attribute |= EFI_FILE_ARCHIVE;\r | |
2518 | }\r | |
2519 | \r | |
2520 | if (IS_FID_HIDDEN_FILE (File->FileIdentifierDesc)) {\r | |
2521 | FileInfo->Attribute |= EFI_FILE_HIDDEN;\r | |
2522 | }\r | |
2523 | \r | |
baaa3cee PA |
2524 | DescriptorTag = File->FileEntry;\r |
2525 | \r | |
2526 | if (DescriptorTag->TagIdentifier == UdfFileEntry) {\r | |
99c9b949 PA |
2527 | FileEntry = (UDF_FILE_ENTRY *)File->FileEntry;\r |
2528 | \r | |
2529 | //\r | |
2530 | // Check if FE has the system attribute set.\r | |
2531 | //\r | |
2532 | if (FileEntry->IcbTag.Flags & (1 << 10)) {\r | |
2533 | FileInfo->Attribute |= EFI_FILE_SYSTEM;\r | |
2534 | }\r | |
2535 | \r | |
1436aea4 MK |
2536 | FileInfo->FileSize = FileSize;\r |
2537 | FileInfo->PhysicalSize = FileSize;\r | |
2538 | \r | |
2539 | FileInfo->CreateTime.Year = FileEntry->AccessTime.Year;\r | |
2540 | FileInfo->CreateTime.Month = FileEntry->AccessTime.Month;\r | |
2541 | FileInfo->CreateTime.Day = FileEntry->AccessTime.Day;\r | |
2542 | FileInfo->CreateTime.Hour = FileEntry->AccessTime.Hour;\r | |
2543 | FileInfo->CreateTime.Minute = FileEntry->AccessTime.Minute;\r | |
2544 | FileInfo->CreateTime.Second = FileEntry->AccessTime.Second;\r | |
2545 | FileInfo->CreateTime.Nanosecond =\r | |
2546 | FileEntry->AccessTime.HundredsOfMicroseconds;\r | |
2547 | \r | |
2548 | FileInfo->LastAccessTime.Year =\r | |
2549 | FileEntry->AccessTime.Year;\r | |
2550 | FileInfo->LastAccessTime.Month =\r | |
2551 | FileEntry->AccessTime.Month;\r | |
2552 | FileInfo->LastAccessTime.Day =\r | |
2553 | FileEntry->AccessTime.Day;\r | |
2554 | FileInfo->LastAccessTime.Hour =\r | |
2555 | FileEntry->AccessTime.Hour;\r | |
2556 | FileInfo->LastAccessTime.Minute =\r | |
2557 | FileEntry->AccessTime.Minute;\r | |
2558 | FileInfo->LastAccessTime.Second =\r | |
2559 | FileEntry->AccessTime.Second;\r | |
2560 | FileInfo->LastAccessTime.Nanosecond =\r | |
2561 | FileEntry->AccessTime.HundredsOfMicroseconds;\r | |
baaa3cee | 2562 | } else if (DescriptorTag->TagIdentifier == UdfExtendedFileEntry) {\r |
99c9b949 PA |
2563 | ExtendedFileEntry = (UDF_EXTENDED_FILE_ENTRY *)File->FileEntry;\r |
2564 | \r | |
2565 | //\r | |
2566 | // Check if EFE has the system attribute set.\r | |
2567 | //\r | |
2568 | if (ExtendedFileEntry->IcbTag.Flags & (1 << 10)) {\r | |
2569 | FileInfo->Attribute |= EFI_FILE_SYSTEM;\r | |
2570 | }\r | |
2571 | \r | |
1436aea4 MK |
2572 | FileInfo->FileSize = FileSize;\r |
2573 | FileInfo->PhysicalSize = FileSize;\r | |
2574 | \r | |
2575 | FileInfo->CreateTime.Year = ExtendedFileEntry->CreationTime.Year;\r | |
2576 | FileInfo->CreateTime.Month = ExtendedFileEntry->CreationTime.Month;\r | |
2577 | FileInfo->CreateTime.Day = ExtendedFileEntry->CreationTime.Day;\r | |
2578 | FileInfo->CreateTime.Hour = ExtendedFileEntry->CreationTime.Hour;\r | |
2579 | FileInfo->CreateTime.Minute = ExtendedFileEntry->CreationTime.Second;\r | |
2580 | FileInfo->CreateTime.Second = ExtendedFileEntry->CreationTime.Second;\r | |
2581 | FileInfo->CreateTime.Nanosecond =\r | |
2582 | ExtendedFileEntry->AccessTime.HundredsOfMicroseconds;\r | |
2583 | \r | |
2584 | FileInfo->LastAccessTime.Year =\r | |
2585 | ExtendedFileEntry->AccessTime.Year;\r | |
2586 | FileInfo->LastAccessTime.Month =\r | |
2587 | ExtendedFileEntry->AccessTime.Month;\r | |
2588 | FileInfo->LastAccessTime.Day =\r | |
2589 | ExtendedFileEntry->AccessTime.Day;\r | |
2590 | FileInfo->LastAccessTime.Hour =\r | |
2591 | ExtendedFileEntry->AccessTime.Hour;\r | |
2592 | FileInfo->LastAccessTime.Minute =\r | |
2593 | ExtendedFileEntry->AccessTime.Minute;\r | |
2594 | FileInfo->LastAccessTime.Second =\r | |
2595 | ExtendedFileEntry->AccessTime.Second;\r | |
2596 | FileInfo->LastAccessTime.Nanosecond =\r | |
2597 | ExtendedFileEntry->AccessTime.HundredsOfMicroseconds;\r | |
2598 | }\r | |
2599 | \r | |
2600 | FileInfo->CreateTime.TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r | |
2601 | FileInfo->CreateTime.Daylight = EFI_TIME_ADJUST_DAYLIGHT;\r | |
2602 | FileInfo->LastAccessTime.TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r | |
2603 | FileInfo->LastAccessTime.Daylight = EFI_TIME_ADJUST_DAYLIGHT;\r | |
2604 | \r | |
2605 | CopyMem (\r | |
2606 | (VOID *)&FileInfo->ModificationTime,\r | |
2607 | (VOID *)&FileInfo->LastAccessTime,\r | |
2608 | sizeof (EFI_TIME)\r | |
2609 | );\r | |
99c9b949 PA |
2610 | \r |
2611 | if (FileName != NULL) {\r | |
2612 | StrCpyS (FileInfo->FileName, StrLen (FileName) + 1, FileName);\r | |
2613 | } else {\r | |
2614 | FileInfo->FileName[0] = '\0';\r | |
2615 | }\r | |
2616 | \r | |
2617 | *BufferSize = FileInfoLength;\r | |
2618 | \r | |
2619 | return EFI_SUCCESS;\r | |
2620 | }\r | |
2621 | \r | |
32698a8f HW |
2622 | /**\r |
2623 | Get volume label of an UDF volume.\r | |
2624 | \r | |
2625 | @attention This is boundary function that may receive untrusted input.\r | |
2626 | @attention The input is from FileSystem.\r | |
2627 | \r | |
2628 | The File Set Descriptor is external input, so this routine will do basic\r | |
2629 | validation for File Set Descriptor and report status.\r | |
2630 | \r | |
2631 | @param[in] Volume Volume information pointer.\r | |
2632 | @param[in] CharMax The maximum number of Unicode char in String,\r | |
2633 | including terminating null char.\r | |
2634 | @param[out] String String buffer pointer to store the volume label.\r | |
2635 | \r | |
2636 | @retval EFI_SUCCESS Volume label is returned.\r | |
2637 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
2638 | @retval EFI_BUFFER_TOO_SMALL The string buffer String cannot hold the\r | |
2639 | volume label.\r | |
2640 | \r | |
2641 | **/\r | |
2642 | EFI_STATUS\r | |
2643 | GetVolumeLabel (\r | |
2644 | IN UDF_VOLUME_INFO *Volume,\r | |
2645 | IN UINTN CharMax,\r | |
2646 | OUT CHAR16 *String\r | |
2647 | )\r | |
2648 | {\r | |
2649 | UDF_FILE_SET_DESCRIPTOR *FileSetDesc;\r | |
2650 | UINTN Index;\r | |
2651 | UINT8 *OstaCompressed;\r | |
2652 | UINT8 CompressionId;\r | |
2653 | CHAR16 *StringBak;\r | |
2654 | \r | |
2655 | FileSetDesc = &Volume->FileSetDesc;\r | |
2656 | \r | |
2657 | OstaCompressed = &FileSetDesc->LogicalVolumeIdentifier[0];\r | |
2658 | \r | |
2659 | CompressionId = OstaCompressed[0];\r | |
2660 | if (!IS_VALID_COMPRESSION_ID (CompressionId)) {\r | |
2661 | return EFI_VOLUME_CORRUPTED;\r | |
2662 | }\r | |
2663 | \r | |
2664 | StringBak = String;\r | |
2665 | for (Index = 1; Index < 128; Index++) {\r | |
2666 | if (CompressionId == 16) {\r | |
2667 | if ((Index >> 1) > CharMax) {\r | |
2668 | return EFI_BUFFER_TOO_SMALL;\r | |
2669 | }\r | |
2670 | \r | |
2671 | *String = *(UINT8 *)(OstaCompressed + Index) << 8;\r | |
2672 | Index++;\r | |
2673 | } else {\r | |
2674 | if (Index > CharMax) {\r | |
2675 | return EFI_BUFFER_TOO_SMALL;\r | |
2676 | }\r | |
2677 | \r | |
2678 | *String = 0;\r | |
2679 | }\r | |
2680 | \r | |
2681 | if (Index < 128) {\r | |
2682 | *String |= (CHAR16)(*(UINT8 *)(OstaCompressed + Index));\r | |
2683 | }\r | |
2684 | \r | |
2685 | //\r | |
2686 | // Unlike FID Identifiers, Logical Volume Identifier is stored in a\r | |
2687 | // NULL-terminated OSTA compressed format, so we must check for the NULL\r | |
2688 | // character.\r | |
2689 | //\r | |
2690 | if (*String == L'\0') {\r | |
2691 | break;\r | |
2692 | }\r | |
2693 | \r | |
2694 | String++;\r | |
2695 | }\r | |
2696 | \r | |
2697 | Index = ((UINTN)String - (UINTN)StringBak) / sizeof (CHAR16);\r | |
2698 | if (Index > CharMax - 1) {\r | |
2699 | Index = CharMax - 1;\r | |
2700 | }\r | |
1436aea4 | 2701 | \r |
32698a8f HW |
2702 | StringBak[Index] = L'\0';\r |
2703 | \r | |
2704 | return EFI_SUCCESS;\r | |
2705 | }\r | |
2706 | \r | |
99c9b949 PA |
2707 | /**\r |
2708 | Get volume and free space size information of an UDF volume.\r | |
2709 | \r | |
3b30351b HW |
2710 | @attention This is boundary function that may receive untrusted input.\r |
2711 | @attention The input is from FileSystem.\r | |
2712 | \r | |
2713 | The Logical Volume Descriptor and the Logical Volume Integrity Descriptor are\r | |
2714 | external inputs, so this routine will do basic validation for both descriptors\r | |
2715 | and report status.\r | |
2716 | \r | |
99c9b949 PA |
2717 | @param[in] BlockIo BlockIo interface.\r |
2718 | @param[in] DiskIo DiskIo interface.\r | |
2719 | @param[in] Volume UDF volume information structure.\r | |
2720 | @param[out] VolumeSize Volume size.\r | |
2721 | @param[out] FreeSpaceSize Free space size.\r | |
2722 | \r | |
2723 | @retval EFI_SUCCESS Volume and free space size calculated.\r | |
2724 | @retval EFI_NO_MEDIA The device has no media.\r | |
2725 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
2726 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
2727 | @retval EFI_OUT_OF_RESOURCES The volume and free space size were not\r | |
2728 | calculated due to lack of resources.\r | |
2729 | \r | |
2730 | **/\r | |
2731 | EFI_STATUS\r | |
2732 | GetVolumeSize (\r | |
2733 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
2734 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
2735 | IN UDF_VOLUME_INFO *Volume,\r | |
2736 | OUT UINT64 *VolumeSize,\r | |
2737 | OUT UINT64 *FreeSpaceSize\r | |
2738 | )\r | |
2739 | {\r | |
baaa3cee PA |
2740 | EFI_STATUS Status;\r |
2741 | UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;\r | |
2742 | UDF_EXTENT_AD *ExtentAd;\r | |
2743 | UINT64 Lsn;\r | |
2744 | UINT32 LogicalBlockSize;\r | |
2745 | UDF_LOGICAL_VOLUME_INTEGRITY *LogicalVolInt;\r | |
2746 | UDF_DESCRIPTOR_TAG *DescriptorTag;\r | |
2747 | UINTN Index;\r | |
2748 | UINTN Length;\r | |
2749 | UINT32 LsnsNo;\r | |
99c9b949 | 2750 | \r |
baaa3cee | 2751 | LogicalVolDesc = &Volume->LogicalVolDesc;\r |
99c9b949 | 2752 | \r |
baaa3cee | 2753 | ExtentAd = &LogicalVolDesc->IntegritySequenceExtent;\r |
99c9b949 | 2754 | \r |
3b30351b | 2755 | if ((ExtentAd->ExtentLength == 0) ||\r |
1436aea4 MK |
2756 | (ExtentAd->ExtentLength < sizeof (UDF_LOGICAL_VOLUME_INTEGRITY)))\r |
2757 | {\r | |
baaa3cee PA |
2758 | return EFI_VOLUME_CORRUPTED;\r |
2759 | }\r | |
99c9b949 | 2760 | \r |
baaa3cee PA |
2761 | LogicalVolInt = AllocatePool (ExtentAd->ExtentLength);\r |
2762 | if (LogicalVolInt == NULL) {\r | |
2763 | return EFI_OUT_OF_RESOURCES;\r | |
2764 | }\r | |
99c9b949 | 2765 | \r |
baaa3cee PA |
2766 | //\r |
2767 | // Get location of Logical Volume Integrity Descriptor\r | |
2768 | //\r | |
2769 | Lsn = (UINT64)ExtentAd->ExtentLocation - Volume->MainVdsStartLocation;\r | |
99c9b949 | 2770 | \r |
baaa3cee | 2771 | LogicalBlockSize = LogicalVolDesc->LogicalBlockSize;\r |
99c9b949 | 2772 | \r |
baaa3cee PA |
2773 | //\r |
2774 | // Read disk block\r | |
2775 | //\r | |
2776 | Status = DiskIo->ReadDisk (\r | |
1436aea4 MK |
2777 | DiskIo,\r |
2778 | BlockIo->Media->MediaId,\r | |
2779 | MultU64x32 (Lsn, LogicalBlockSize),\r | |
2780 | ExtentAd->ExtentLength,\r | |
2781 | LogicalVolInt\r | |
2782 | );\r | |
baaa3cee PA |
2783 | if (EFI_ERROR (Status)) {\r |
2784 | goto Out_Free;\r | |
2785 | }\r | |
99c9b949 | 2786 | \r |
baaa3cee | 2787 | DescriptorTag = &LogicalVolInt->DescriptorTag;\r |
99c9b949 | 2788 | \r |
baaa3cee PA |
2789 | //\r |
2790 | // Check if read block is a Logical Volume Integrity Descriptor\r | |
2791 | //\r | |
2792 | if (DescriptorTag->TagIdentifier != UdfLogicalVolumeIntegrityDescriptor) {\r | |
2793 | Status = EFI_VOLUME_CORRUPTED;\r | |
2794 | goto Out_Free;\r | |
2795 | }\r | |
2796 | \r | |
3b30351b HW |
2797 | if ((LogicalVolInt->NumberOfPartitions > MAX_UINT32 / sizeof (UINT32) / 2) ||\r |
2798 | (LogicalVolInt->NumberOfPartitions * sizeof (UINT32) * 2 >\r | |
1436aea4 MK |
2799 | ExtentAd->ExtentLength - sizeof (UDF_LOGICAL_VOLUME_INTEGRITY)))\r |
2800 | {\r | |
3b30351b HW |
2801 | Status = EFI_VOLUME_CORRUPTED;\r |
2802 | goto Out_Free;\r | |
2803 | }\r | |
2804 | \r | |
1436aea4 | 2805 | *VolumeSize = 0;\r |
baaa3cee | 2806 | *FreeSpaceSize = 0;\r |
99c9b949 | 2807 | \r |
baaa3cee PA |
2808 | Length = LogicalVolInt->NumberOfPartitions;\r |
2809 | for (Index = 0; Index < Length; Index += sizeof (UINT32)) {\r | |
2810 | LsnsNo = *(UINT32 *)((UINT8 *)LogicalVolInt->Data + Index);\r | |
2811 | //\r | |
2812 | // Check if size is not specified\r | |
2813 | //\r | |
2814 | if (LsnsNo == 0xFFFFFFFFUL) {\r | |
2815 | continue;\r | |
99c9b949 | 2816 | }\r |
1436aea4 | 2817 | \r |
baaa3cee PA |
2818 | //\r |
2819 | // Accumulate free space size\r | |
2820 | //\r | |
2821 | *FreeSpaceSize += MultU64x32 ((UINT64)LsnsNo, LogicalBlockSize);\r | |
2822 | }\r | |
99c9b949 | 2823 | \r |
baaa3cee | 2824 | Length = LogicalVolInt->NumberOfPartitions * sizeof (UINT32) * 2;\r |
1436aea4 | 2825 | for ( ; Index < Length; Index += sizeof (UINT32)) {\r |
baaa3cee PA |
2826 | LsnsNo = *(UINT32 *)((UINT8 *)LogicalVolInt->Data + Index);\r |
2827 | //\r | |
2828 | // Check if size is not specified\r | |
2829 | //\r | |
2830 | if (LsnsNo == 0xFFFFFFFFUL) {\r | |
2831 | continue;\r | |
2832 | }\r | |
1436aea4 | 2833 | \r |
baaa3cee PA |
2834 | //\r |
2835 | // Accumulate used volume space\r | |
2836 | //\r | |
2837 | *VolumeSize += MultU64x32 ((UINT64)LsnsNo, LogicalBlockSize);\r | |
99c9b949 PA |
2838 | }\r |
2839 | \r | |
baaa3cee PA |
2840 | Status = EFI_SUCCESS;\r |
2841 | \r | |
2842 | Out_Free:\r | |
2843 | //\r | |
2844 | // Free Logical Volume Integrity Descriptor\r | |
2845 | //\r | |
2846 | FreePool (LogicalVolInt);\r | |
2847 | \r | |
2848 | return Status;\r | |
99c9b949 PA |
2849 | }\r |
2850 | \r | |
2851 | /**\r | |
2852 | Seek a file and read its data into memory on an UDF volume.\r | |
2853 | \r | |
2854 | @param[in] BlockIo BlockIo interface.\r | |
2855 | @param[in] DiskIo DiskIo interface.\r | |
2856 | @param[in] Volume UDF volume information structure.\r | |
2857 | @param[in] File File information structure.\r | |
2858 | @param[in] FileSize Size of the file.\r | |
077f8c43 HW |
2859 | @param[in, out] FilePosition File position.\r |
2860 | @param[in, out] Buffer File data.\r | |
2861 | @param[in, out] BufferSize Read size.\r | |
99c9b949 PA |
2862 | \r |
2863 | @retval EFI_SUCCESS File seeked and read.\r | |
2864 | @retval EFI_UNSUPPORTED Extended Allocation Descriptors not supported.\r | |
2865 | @retval EFI_NO_MEDIA The device has no media.\r | |
2866 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
2867 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
2868 | @retval EFI_OUT_OF_RESOURCES The file's recorded data was not read due to lack\r | |
2869 | of resources.\r | |
2870 | \r | |
2871 | **/\r | |
2872 | EFI_STATUS\r | |
2873 | ReadFileData (\r | |
2874 | IN EFI_BLOCK_IO_PROTOCOL *BlockIo,\r | |
2875 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
2876 | IN UDF_VOLUME_INFO *Volume,\r | |
2877 | IN UDF_FILE_INFO *File,\r | |
2878 | IN UINT64 FileSize,\r | |
2879 | IN OUT UINT64 *FilePosition,\r | |
2880 | IN OUT VOID *Buffer,\r | |
2881 | IN OUT UINT64 *BufferSize\r | |
2882 | )\r | |
2883 | {\r | |
2884 | EFI_STATUS Status;\r | |
2885 | UDF_READ_FILE_INFO ReadFileInfo;\r | |
2886 | \r | |
1436aea4 MK |
2887 | ReadFileInfo.Flags = ReadFileSeekAndRead;\r |
2888 | ReadFileInfo.FilePosition = *FilePosition;\r | |
2889 | ReadFileInfo.FileData = Buffer;\r | |
2890 | ReadFileInfo.FileDataSize = *BufferSize;\r | |
2891 | ReadFileInfo.FileSize = FileSize;\r | |
99c9b949 PA |
2892 | \r |
2893 | Status = ReadFile (\r | |
1436aea4 MK |
2894 | BlockIo,\r |
2895 | DiskIo,\r | |
2896 | Volume,\r | |
2897 | &File->FileIdentifierDesc->Icb,\r | |
2898 | File->FileEntry,\r | |
2899 | &ReadFileInfo\r | |
2900 | );\r | |
99c9b949 PA |
2901 | if (EFI_ERROR (Status)) {\r |
2902 | return Status;\r | |
2903 | }\r | |
2904 | \r | |
1436aea4 MK |
2905 | *BufferSize = ReadFileInfo.FileDataSize;\r |
2906 | *FilePosition = ReadFileInfo.FilePosition;\r | |
99c9b949 PA |
2907 | \r |
2908 | return EFI_SUCCESS;\r | |
2909 | }\r | |
2910 | \r | |
2911 | /**\r | |
2912 | Check if ControllerHandle supports an UDF file system.\r | |
2913 | \r | |
2914 | @param[in] This Protocol instance pointer.\r | |
2915 | @param[in] ControllerHandle Handle of device to test.\r | |
2916 | \r | |
2917 | @retval EFI_SUCCESS UDF file system found.\r | |
2918 | @retval EFI_UNSUPPORTED UDF file system not found.\r | |
2919 | \r | |
2920 | **/\r | |
2921 | EFI_STATUS\r | |
2922 | SupportUdfFileSystem (\r | |
2923 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
2924 | IN EFI_HANDLE ControllerHandle\r | |
2925 | )\r | |
2926 | {\r | |
2927 | EFI_STATUS Status;\r | |
2928 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
2929 | EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;\r | |
2930 | EFI_DEVICE_PATH_PROTOCOL *LastDevicePathNode;\r | |
2931 | EFI_GUID *VendorDefinedGuid;\r | |
99c9b949 PA |
2932 | \r |
2933 | //\r | |
2934 | // Open Device Path protocol on ControllerHandle\r | |
2935 | //\r | |
2936 | Status = gBS->OpenProtocol (\r | |
1436aea4 MK |
2937 | ControllerHandle,\r |
2938 | &gEfiDevicePathProtocolGuid,\r | |
2939 | (VOID **)&DevicePath,\r | |
2940 | This->DriverBindingHandle,\r | |
2941 | ControllerHandle,\r | |
2942 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
2943 | );\r | |
99c9b949 PA |
2944 | if (EFI_ERROR (Status)) {\r |
2945 | return EFI_UNSUPPORTED;\r | |
2946 | }\r | |
2947 | \r | |
2948 | Status = EFI_UNSUPPORTED;\r | |
2949 | \r | |
2950 | //\r | |
2951 | // Get last Device Path node\r | |
2952 | //\r | |
2953 | LastDevicePathNode = NULL;\r | |
1436aea4 | 2954 | DevicePathNode = DevicePath;\r |
99c9b949 PA |
2955 | while (!IsDevicePathEnd (DevicePathNode)) {\r |
2956 | LastDevicePathNode = DevicePathNode;\r | |
1436aea4 | 2957 | DevicePathNode = NextDevicePathNode (DevicePathNode);\r |
99c9b949 | 2958 | }\r |
1436aea4 | 2959 | \r |
99c9b949 PA |
2960 | //\r |
2961 | // Check if last Device Path node contains a Vendor-Defined Media Device Path\r | |
2962 | // of an UDF file system.\r | |
2963 | //\r | |
1436aea4 MK |
2964 | if ((LastDevicePathNode != NULL) &&\r |
2965 | (DevicePathType (LastDevicePathNode) == MEDIA_DEVICE_PATH) &&\r | |
2966 | (DevicePathSubType (LastDevicePathNode) == MEDIA_VENDOR_DP))\r | |
2967 | {\r | |
99c9b949 PA |
2968 | VendorDefinedGuid = (EFI_GUID *)((UINTN)LastDevicePathNode +\r |
2969 | OFFSET_OF (VENDOR_DEVICE_PATH, Guid));\r | |
3f92b104 | 2970 | if (CompareGuid (VendorDefinedGuid, &gUdfDevPathGuid)) {\r |
99c9b949 PA |
2971 | Status = EFI_SUCCESS;\r |
2972 | }\r | |
2973 | }\r | |
2974 | \r | |
2975 | //\r | |
2976 | // Close Device Path protocol on ControllerHandle\r | |
2977 | //\r | |
2978 | gBS->CloseProtocol (\r | |
1436aea4 MK |
2979 | ControllerHandle,\r |
2980 | &gEfiDevicePathProtocolGuid,\r | |
2981 | This->DriverBindingHandle,\r | |
2982 | ControllerHandle\r | |
2983 | );\r | |
99c9b949 PA |
2984 | \r |
2985 | return Status;\r | |
2986 | }\r |