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1e57a462 | 1 | /** @file\r |
2 | File IO routines inspired by Streams with an EFI flavor\r | |
3 | \r | |
4 | Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>\r | |
5 | Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
6 | \r | |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | Basic support for opening files on different device types. The device string\r | |
16 | is in the form of DevType:Path. Current DevType is required as there is no\r | |
17 | current mounted device concept of current working directory concept implement\r | |
18 | by this library.\r | |
19 | \r | |
20 | Device names are case insensitive and only check the leading characters for\r | |
21 | unique matches. Thus the following are all the same:\r | |
22 | LoadFile0:\r | |
23 | l0:\r | |
24 | L0:\r | |
25 | Lo0:\r | |
26 | \r | |
27 | Supported Device Names:\r | |
28 | A0x1234:0x12 - A memory buffer starting at address 0x1234 for 0x12 bytes\r | |
29 | l1: - EFI LoadFile device one.\r | |
30 | B0: - EFI BlockIo zero.\r | |
31 | fs3: - EFI Simple File System device 3\r | |
32 | Fv2: - EFI Firmware VOlume device 2\r | |
33 | 10.0.1.102: - TFTP service IP followed by the file name\r | |
34 | **/\r | |
35 | \r | |
36 | #include <PiDxe.h>\r | |
3402aac7 RC |
37 | #include <Protocol/BlockIo.h>\r |
38 | #include <Protocol/DiskIo.h>\r | |
39 | #include <Protocol/SimpleFileSystem.h>\r | |
40 | #include <Protocol/FirmwareVolume2.h>\r | |
1e57a462 | 41 | #include <Protocol/LoadFile.h>\r |
3402aac7 | 42 | #include <Protocol/FirmwareVolumeBlock.h>\r |
1e57a462 | 43 | #include <Guid/FileInfo.h>\r |
44 | #include <Library/BaseLib.h>\r | |
45 | #include <Library/MemoryAllocationLib.h>\r | |
46 | #include <Library/DevicePathLib.h>\r | |
47 | #include <Library/PrintLib.h>\r | |
48 | #include <Library/BaseMemoryLib.h>\r | |
3402aac7 | 49 | #include <Library/UefiLib.h>\r |
1e57a462 | 50 | #include <Library/UefiBootServicesTableLib.h>\r |
51 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
52 | #include <Library/DebugLib.h>\r | |
53 | #include <Library/EfiFileLib.h>\r | |
54 | #include <Library/PcdLib.h>\r | |
55 | #include <Library/EblNetworkLib.h>\r | |
56 | \r | |
57 | \r | |
58 | CHAR8 *gCwd = NULL;\r | |
59 | \r | |
60 | CONST EFI_GUID gZeroGuid = { 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0, 0 } };\r | |
61 | \r | |
62 | #define EFI_OPEN_FILE_GUARD_HEADER 0x4B4D4641\r | |
63 | #define EFI_OPEN_FILE_GUARD_FOOTER 0x444D5A56\r | |
64 | \r | |
65 | // Need to defend against this overflowing\r | |
66 | #define MAX_CMD_LINE 0x200\r | |
67 | \r | |
68 | typedef struct {\r | |
69 | UINT32 Header;\r | |
70 | EFI_OPEN_FILE File;\r | |
71 | UINT32 Footer;\r | |
72 | } EFI_OPEN_FILE_GUARD;\r | |
73 | \r | |
74 | \r | |
75 | // globals to store current open device info\r | |
76 | EFI_HANDLE *mBlkIo = NULL;\r | |
77 | UINTN mBlkIoCount = 0;\r | |
78 | \r | |
79 | EFI_HANDLE *mFs = NULL;\r | |
80 | UINTN mFsCount = 0;\r | |
81 | // mFsInfo[] array entries must match mFs[] handles\r | |
82 | EFI_FILE_SYSTEM_INFO **mFsInfo = NULL;\r | |
83 | \r | |
84 | EFI_HANDLE *mFv = NULL;\r | |
85 | UINTN mFvCount = 0;\r | |
86 | EFI_HANDLE *mLoadFile = NULL;\r | |
87 | UINTN mLoadFileCount = 0;\r | |
88 | \r | |
89 | \r | |
90 | \r | |
91 | /**\r | |
92 | Internal worker function to validate a File handle.\r | |
93 | \r | |
94 | @param File Open File Handle\r | |
95 | \r | |
96 | @return TRUE File is valid\r | |
97 | @return FALSE File is not valid\r | |
98 | \r | |
99 | \r | |
100 | **/\r | |
101 | BOOLEAN\r | |
102 | FileHandleValid (\r | |
103 | IN EFI_OPEN_FILE *File\r | |
104 | )\r | |
105 | {\r | |
106 | EFI_OPEN_FILE_GUARD *GuardFile;\r | |
107 | \r | |
108 | // Look right before and after file structure for the correct signatures\r | |
109 | GuardFile = BASE_CR (File, EFI_OPEN_FILE_GUARD, File);\r | |
110 | if ((GuardFile->Header != EFI_OPEN_FILE_GUARD_HEADER) ||\r | |
111 | (GuardFile->Footer != EFI_OPEN_FILE_GUARD_FOOTER) ) {\r | |
112 | return FALSE;\r | |
113 | }\r | |
114 | \r | |
115 | return TRUE;\r | |
116 | }\r | |
117 | \r | |
118 | /**\r | |
119 | Internal worker function. If Buffer is not NULL free it.\r | |
120 | \r | |
121 | @param Buffer Buffer to FreePool()\r | |
122 | \r | |
123 | **/\r | |
124 | VOID\r | |
125 | EblFreePool (\r | |
126 | IN VOID *Buffer\r | |
127 | )\r | |
128 | {\r | |
129 | if (Buffer != NULL) {\r | |
130 | FreePool (Buffer);\r | |
131 | }\r | |
132 | }\r | |
133 | \r | |
134 | /**\r | |
135 | Update Device List Global Variables\r | |
136 | \r | |
137 | **/\r | |
138 | VOID\r | |
139 | EblUpdateDeviceLists (\r | |
140 | VOID\r | |
141 | )\r | |
142 | {\r | |
143 | EFI_STATUS Status;\r | |
144 | UINTN Size;\r | |
145 | EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Fs;\r | |
146 | EFI_FILE_HANDLE Root;\r | |
147 | UINTN Index;\r | |
148 | \r | |
149 | if (mBlkIo != NULL) {\r | |
150 | FreePool (mBlkIo);\r | |
151 | }\r | |
152 | gBS->LocateHandleBuffer (ByProtocol, &gEfiBlockIoProtocolGuid, NULL, &mBlkIoCount, &mBlkIo);\r | |
153 | \r | |
154 | \r | |
155 | \r | |
156 | if (mFv != NULL) {\r | |
157 | FreePool (mFv);\r | |
158 | }\r | |
159 | gBS->LocateHandleBuffer (ByProtocol, &gEfiFirmwareVolume2ProtocolGuid, NULL, &mFvCount, &mFv);\r | |
160 | \r | |
161 | if (mLoadFile != NULL) {\r | |
162 | FreePool (mLoadFile);\r | |
163 | }\r | |
164 | gBS->LocateHandleBuffer (ByProtocol, &gEfiLoadFileProtocolGuid, NULL, &mLoadFileCount, &mLoadFile);\r | |
165 | \r | |
166 | if (mFs != NULL) {\r | |
167 | FreePool (mFs);\r | |
168 | }\r | |
169 | \r | |
170 | if (&mFsInfo[0] != NULL) {\r | |
171 | // Need to Free the mFsInfo prior to recalculating mFsCount so don't move this code\r | |
172 | for (Index = 0; Index < mFsCount; Index++) {\r | |
173 | if (mFsInfo[Index] != NULL) {\r | |
174 | FreePool (mFsInfo[Index]);\r | |
175 | }\r | |
176 | }\r | |
177 | FreePool (mFsInfo);\r | |
178 | }\r | |
179 | \r | |
180 | gBS->LocateHandleBuffer (ByProtocol, &gEfiSimpleFileSystemProtocolGuid, NULL, &mFsCount, &mFs);\r | |
181 | \r | |
182 | \r | |
183 | mFsInfo = AllocateZeroPool (mFsCount * sizeof (EFI_FILE_SYSTEM_INFO *));\r | |
184 | if (mFsInfo == NULL) {\r | |
185 | // If we can't do this then we can't support file system entries\r | |
186 | mFsCount = 0;\r | |
187 | } else {\r | |
188 | // Loop through all the file system structures and cache the file system info data\r | |
189 | for (Index =0; Index < mFsCount; Index++) {\r | |
190 | Status = gBS->HandleProtocol (mFs[Index], &gEfiSimpleFileSystemProtocolGuid, (VOID **)&Fs);\r | |
191 | if (!EFI_ERROR (Status)) {\r | |
192 | Status = Fs->OpenVolume (Fs, &Root);\r | |
193 | if (!EFI_ERROR (Status)) {\r | |
194 | // Get information about the volume\r | |
195 | Size = 0;\r | |
196 | Status = Root->GetInfo (Root, &gEfiFileSystemInfoGuid, &Size, mFsInfo[Index]);\r | |
197 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
198 | mFsInfo[Index] = AllocatePool (Size);\r | |
199 | Status = Root->GetInfo (Root, &gEfiFileSystemInfoGuid, &Size, mFsInfo[Index]);\r | |
200 | }\r | |
201 | \r | |
202 | Root->Close (Root);\r | |
203 | }\r | |
204 | }\r | |
205 | }\r | |
206 | }\r | |
207 | }\r | |
208 | \r | |
209 | \r | |
210 | /**\r | |
211 | PathName is in the form <device name>:<path> for example fs1:\ or ROOT:\.\r | |
212 | Return TRUE if the <devce name> prefix of PathName matches a file system\r | |
3402aac7 | 213 | Volume Name. MatchIndex is the array index in mFsInfo[] of the match,\r |
1e57a462 | 214 | and it can be used with mFs[] to find the handle that needs to be opened\r |
215 | \r | |
216 | @param PathName PathName to check\r | |
217 | @param FileStart Index of the first character of the <path>\r | |
218 | @param MatchIndex Index in mFsInfo[] that matches\r | |
219 | \r | |
220 | @return TRUE PathName matches a Volume Label and MatchIndex is valid\r | |
221 | @return FALSE PathName does not match a Volume Label MatchIndex undefined\r | |
222 | \r | |
223 | **/\r | |
224 | BOOLEAN\r | |
225 | EblMatchVolumeName (\r | |
226 | IN CHAR8 *PathName,\r | |
227 | IN UINTN FileStart,\r | |
228 | OUT UINTN *MatchIndex\r | |
229 | )\r | |
230 | {\r | |
231 | UINTN Index;\r | |
232 | UINTN Compare;\r | |
233 | UINTN VolStrLen;\r | |
234 | BOOLEAN Match;\r | |
235 | \r | |
236 | for (Index =0; Index < mFsCount; Index++) {\r | |
237 | if (mFsInfo[Index] == NULL) {\r | |
238 | // FsInfo is not valid so skip it\r | |
239 | continue;\r | |
240 | }\r | |
241 | VolStrLen = StrLen (mFsInfo[Index]->VolumeLabel);\r | |
242 | for (Compare = 0, Match = TRUE; Compare < (FileStart - 1); Compare++) {\r | |
243 | if (Compare > VolStrLen) {\r | |
244 | Match = FALSE;\r | |
245 | break;\r | |
246 | }\r | |
247 | if (PathName[Compare] != (CHAR8)mFsInfo[Index]->VolumeLabel[Compare]) {\r | |
248 | // If the VolumeLabel has a space allow a _ to match with it in addition to ' '\r | |
249 | if (!((PathName[Compare] == '_') && (mFsInfo[Index]->VolumeLabel[Compare] == L' '))) {\r | |
250 | Match = FALSE;\r | |
251 | break;\r | |
252 | }\r | |
253 | }\r | |
254 | }\r | |
255 | if (Match) {\r | |
256 | *MatchIndex = Index;\r | |
257 | return TRUE;\r | |
258 | }\r | |
259 | }\r | |
260 | \r | |
261 | return FALSE;\r | |
262 | }\r | |
263 | \r | |
264 | \r | |
265 | /**\r | |
266 | Return the number of devices of the current type active in the system\r | |
267 | \r | |
268 | @param Type Device type to check\r | |
269 | \r | |
270 | @return 0 Invalid type\r | |
271 | \r | |
272 | **/\r | |
273 | UINTN\r | |
274 | EfiGetDeviceCounts (\r | |
275 | IN EFI_OPEN_FILE_TYPE DeviceType\r | |
276 | )\r | |
277 | {\r | |
278 | switch (DeviceType) {\r | |
279 | case EfiOpenLoadFile:\r | |
280 | return mLoadFileCount;\r | |
281 | case EfiOpenFirmwareVolume:\r | |
282 | return mFvCount;\r | |
283 | case EfiOpenFileSystem:\r | |
284 | return mFsCount;\r | |
285 | case EfiOpenBlockIo:\r | |
286 | return mBlkIoCount;\r | |
287 | default:\r | |
288 | return 0;\r | |
289 | }\r | |
290 | }\r | |
291 | \r | |
292 | EFI_STATUS\r | |
293 | ConvertIpStringToEfiIp (\r | |
3402aac7 | 294 | IN CHAR8 *PathName,\r |
1e57a462 | 295 | OUT EFI_IP_ADDRESS *ServerIp\r |
296 | )\r | |
297 | {\r | |
298 | CHAR8 *Str;\r | |
299 | \r | |
300 | Str = PathName;\r | |
301 | ServerIp->v4.Addr[0] = (UINT8)AsciiStrDecimalToUintn (Str);\r | |
302 | \r | |
303 | Str = AsciiStrStr (Str, ".");\r | |
304 | if (Str == NULL) {\r | |
305 | return EFI_DEVICE_ERROR;\r | |
306 | }\r | |
307 | \r | |
308 | ServerIp->v4.Addr[1] = (UINT8)AsciiStrDecimalToUintn (++Str);\r | |
309 | \r | |
310 | Str = AsciiStrStr (Str, ".");\r | |
311 | if (Str == NULL) {\r | |
312 | return EFI_DEVICE_ERROR;\r | |
313 | }\r | |
314 | \r | |
315 | ServerIp->v4.Addr[2] = (UINT8)AsciiStrDecimalToUintn (++Str);\r | |
316 | \r | |
317 | Str = AsciiStrStr (Str, ".");\r | |
318 | if (Str == NULL) {\r | |
319 | return EFI_DEVICE_ERROR;\r | |
320 | }\r | |
321 | \r | |
322 | ServerIp->v4.Addr[3] = (UINT8)AsciiStrDecimalToUintn (++Str);\r | |
323 | \r | |
324 | return EFI_SUCCESS;\r | |
325 | }\r | |
326 | \r | |
327 | \r | |
328 | /**\r | |
3402aac7 | 329 | Internal work function to extract a device number from a string skipping\r |
1e57a462 | 330 | text. Easy way to extract numbers from strings like blk7:.\r |
331 | \r | |
332 | @param Str String to extract device number form\r | |
333 | \r | |
334 | @return -1 Device string is not valid\r | |
335 | @return Device #\r | |
336 | \r | |
337 | **/\r | |
338 | UINTN\r | |
339 | EblConvertDevStringToNumber (\r | |
340 | IN CHAR8 *Str\r | |
341 | )\r | |
342 | {\r | |
343 | UINTN Max;\r | |
344 | UINTN Index;\r | |
345 | \r | |
346 | \r | |
3402aac7 | 347 | // Find the first digit\r |
1e57a462 | 348 | Max = AsciiStrLen (Str);\r |
349 | for (Index = 0; !((*Str >= '0') && (*Str <= '9')) && (Index < Max); Index++) {\r | |
350 | Str++;\r | |
351 | }\r | |
352 | if (Index == Max) {\r | |
353 | return (UINTN)-1;\r | |
354 | }\r | |
355 | \r | |
356 | return AsciiStrDecimalToUintn (Str);\r | |
357 | }\r | |
358 | \r | |
359 | \r | |
360 | /**\r | |
361 | Internal work function to fill in EFI_OPEN_FILE information for the Fs and BlkIo\r | |
362 | \r | |
363 | @param File Open file handle\r | |
364 | @param FileName Name of file after device stripped off\r | |
365 | \r | |
366 | \r | |
367 | **/\r | |
368 | EFI_STATUS\r | |
369 | EblFileDevicePath (\r | |
370 | IN OUT EFI_OPEN_FILE *File,\r | |
371 | IN CHAR8 *FileName,\r | |
372 | IN CONST UINT64 OpenMode\r | |
373 | )\r | |
374 | {\r | |
375 | EFI_STATUS Status;\r | |
376 | UINTN Size;\r | |
377 | FILEPATH_DEVICE_PATH *FilePath;\r | |
378 | EFI_DEVICE_PATH_PROTOCOL *FileDevicePath;\r | |
379 | CHAR16 UnicodeFileName[MAX_PATHNAME];\r | |
380 | EFI_BLOCK_IO_PROTOCOL *BlkIo;\r | |
381 | EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Fs;\r | |
382 | EFI_FILE_HANDLE Root;\r | |
383 | \r | |
384 | \r | |
385 | if ( *FileName != 0 ) {\r | |
386 | AsciiStrToUnicodeStr (FileName, UnicodeFileName);\r | |
387 | } else {\r | |
388 | AsciiStrToUnicodeStr ("\\", UnicodeFileName);\r | |
389 | }\r | |
390 | \r | |
391 | Size = StrSize (UnicodeFileName);\r | |
392 | FileDevicePath = AllocatePool (Size + SIZE_OF_FILEPATH_DEVICE_PATH + sizeof (EFI_DEVICE_PATH_PROTOCOL));\r | |
393 | if (FileDevicePath != NULL) {\r | |
394 | FilePath = (FILEPATH_DEVICE_PATH *) FileDevicePath;\r | |
395 | FilePath->Header.Type = MEDIA_DEVICE_PATH;\r | |
396 | FilePath->Header.SubType = MEDIA_FILEPATH_DP;\r | |
397 | CopyMem (&FilePath->PathName, UnicodeFileName, Size);\r | |
398 | SetDevicePathNodeLength (&FilePath->Header, Size + SIZE_OF_FILEPATH_DEVICE_PATH);\r | |
399 | SetDevicePathEndNode (NextDevicePathNode (&FilePath->Header));\r | |
400 | \r | |
401 | if (File->EfiHandle != NULL) {\r | |
402 | File->DevicePath = DevicePathFromHandle (File->EfiHandle);\r | |
403 | }\r | |
404 | \r | |
405 | File->DevicePath = AppendDevicePath (File->DevicePath, FileDevicePath);\r | |
406 | FreePool (FileDevicePath);\r | |
407 | }\r | |
408 | \r | |
409 | Status = gBS->HandleProtocol (File->EfiHandle, &gEfiBlockIoProtocolGuid, (VOID **)&BlkIo);\r | |
410 | if (!EFI_ERROR (Status)) {\r | |
411 | File->FsBlockIoMedia = BlkIo->Media;\r | |
412 | File->FsBlockIo = BlkIo;\r | |
413 | \r | |
414 | // If we are not opening the device this will get over written with file info\r | |
415 | File->MaxPosition = MultU64x32 (BlkIo->Media->LastBlock + 1, BlkIo->Media->BlockSize);\r | |
416 | }\r | |
417 | \r | |
418 | if (File->Type == EfiOpenFileSystem) {\r | |
419 | Status = gBS->HandleProtocol (File->EfiHandle, &gEfiSimpleFileSystemProtocolGuid, (VOID **)&Fs);\r | |
420 | if (!EFI_ERROR (Status)) {\r | |
421 | Status = Fs->OpenVolume (Fs, &Root);\r | |
422 | if (!EFI_ERROR (Status)) {\r | |
423 | // Get information about the volume\r | |
424 | Size = 0;\r | |
425 | Status = Root->GetInfo (Root, &gEfiFileSystemInfoGuid, &Size, File->FsInfo);\r | |
426 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
427 | File->FsInfo = AllocatePool (Size);\r | |
428 | Status = Root->GetInfo (Root, &gEfiFileSystemInfoGuid, &Size, File->FsInfo);\r | |
429 | }\r | |
430 | \r | |
431 | // Get information about the file\r | |
432 | Status = Root->Open (Root, &File->FsFileHandle, UnicodeFileName, OpenMode, 0);\r | |
433 | if (!EFI_ERROR (Status)) {\r | |
434 | Size = 0;\r | |
435 | Status = File->FsFileHandle->GetInfo (File->FsFileHandle, &gEfiFileInfoGuid, &Size, NULL);\r | |
436 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
437 | File->FsFileInfo = AllocatePool (Size);\r | |
438 | Status = File->FsFileHandle->GetInfo (File->FsFileHandle, &gEfiFileInfoGuid, &Size, File->FsFileInfo);\r | |
439 | if (!EFI_ERROR (Status)) {\r | |
440 | File->Size = (UINTN)File->FsFileInfo->FileSize;\r | |
441 | File->MaxPosition = (UINT64)File->Size;\r | |
442 | }\r | |
443 | }\r | |
444 | }\r | |
445 | \r | |
446 | Root->Close (Root);\r | |
447 | }\r | |
448 | }\r | |
449 | } else if (File->Type == EfiOpenBlockIo) {\r | |
450 | File->Size = (UINTN)File->MaxPosition;\r | |
451 | }\r | |
452 | \r | |
453 | return Status;\r | |
454 | }\r | |
455 | \r | |
456 | #define ToUpper(a) ((((a) >= 'a') && ((a) <= 'z')) ? ((a) - 'a' + 'A') : (a))\r | |
457 | \r | |
458 | EFI_STATUS\r | |
459 | CompareGuidToString (\r | |
460 | IN EFI_GUID *Guid,\r | |
461 | IN CHAR8 *String\r | |
462 | )\r | |
463 | {\r | |
464 | CHAR8 AsciiGuid[64];\r | |
465 | CHAR8 *StringPtr;\r | |
466 | CHAR8 *GuidPtr;\r | |
467 | \r | |
468 | AsciiSPrint (AsciiGuid, sizeof(AsciiGuid), "%g", Guid);\r | |
469 | \r | |
470 | StringPtr = String;\r | |
471 | GuidPtr = AsciiGuid;\r | |
472 | \r | |
473 | while ((*StringPtr != '\0') && (*GuidPtr != '\0')) {\r | |
474 | // Skip dashes\r | |
475 | if (*StringPtr == '-') {\r | |
476 | StringPtr++;\r | |
477 | continue;\r | |
478 | }\r | |
479 | \r | |
480 | if (*GuidPtr == '-') {\r | |
481 | GuidPtr++;\r | |
482 | continue;\r | |
483 | }\r | |
484 | \r | |
485 | if (ToUpper(*StringPtr) != ToUpper(*GuidPtr)) {\r | |
486 | return EFI_NOT_FOUND;\r | |
487 | }\r | |
488 | \r | |
489 | StringPtr++;\r | |
490 | GuidPtr++;\r | |
491 | }\r | |
492 | \r | |
493 | return EFI_SUCCESS;\r | |
494 | }\r | |
495 | \r | |
496 | \r | |
497 | /**\r | |
498 | Internal work function to fill in EFI_OPEN_FILE information for the FV\r | |
499 | \r | |
500 | @param File Open file handle\r | |
501 | @param FileName Name of file after device stripped off\r | |
502 | \r | |
503 | \r | |
504 | **/\r | |
505 | EFI_STATUS\r | |
506 | EblFvFileDevicePath (\r | |
507 | IN OUT EFI_OPEN_FILE *File,\r | |
508 | IN CHAR8 *FileName,\r | |
509 | IN CONST UINT64 OpenMode\r | |
510 | )\r | |
511 | {\r | |
512 | EFI_STATUS Status;\r | |
513 | EFI_STATUS GetNextFileStatus;\r | |
514 | MEDIA_FW_VOL_FILEPATH_DEVICE_PATH DevicePathNode;\r | |
515 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
516 | UINTN Key;\r | |
517 | UINT32 AuthenticationStatus;\r | |
518 | CHAR8 AsciiSection[MAX_PATHNAME];\r | |
519 | VOID *Section;\r | |
520 | UINTN SectionSize;\r | |
521 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
522 | EFI_LBA Lba;\r | |
523 | UINTN BlockSize;\r | |
524 | UINTN NumberOfBlocks;\r | |
525 | EFI_FIRMWARE_VOLUME_HEADER *FvHeader = NULL;\r | |
526 | UINTN Index;\r | |
527 | \r | |
528 | \r | |
529 | Status = gBS->HandleProtocol (File->EfiHandle, &gEfiFirmwareVolume2ProtocolGuid, (VOID **)&File->Fv);\r | |
530 | if (EFI_ERROR (Status)) {\r | |
531 | return Status;\r | |
532 | }\r | |
533 | \r | |
534 | // Get FVB Info about the handle\r | |
535 | Status = gBS->HandleProtocol (File->EfiHandle, &gEfiFirmwareVolumeBlockProtocolGuid, (VOID **)&Fvb);\r | |
536 | if (!EFI_ERROR (Status)) {\r | |
537 | Status = Fvb->GetPhysicalAddress (Fvb, &File->FvStart);\r | |
538 | if (!EFI_ERROR (Status)) {\r | |
539 | FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)File->FvStart;\r | |
540 | File->FvHeaderSize = sizeof (EFI_FIRMWARE_VOLUME_HEADER);\r | |
541 | for (Index = 0; FvHeader->BlockMap[Index].Length !=0; Index++) {\r | |
542 | File->FvHeaderSize += sizeof (EFI_FV_BLOCK_MAP_ENTRY);\r | |
543 | }\r | |
544 | \r | |
545 | for (Lba = 0, File->FvSize = 0, NumberOfBlocks = 0; ; File->FvSize += (BlockSize * NumberOfBlocks), Lba += NumberOfBlocks) {\r | |
546 | Status = Fvb->GetBlockSize (Fvb, Lba, &BlockSize, &NumberOfBlocks);\r | |
547 | if (EFI_ERROR (Status)) {\r | |
548 | break;\r | |
549 | }\r | |
550 | }\r | |
551 | }\r | |
552 | }\r | |
553 | \r | |
554 | \r | |
555 | DevicePath = DevicePathFromHandle (File->EfiHandle);\r | |
556 | \r | |
557 | if (*FileName == '\0') {\r | |
558 | File->DevicePath = DuplicateDevicePath (DevicePath);\r | |
559 | File->Size = File->FvSize;\r | |
560 | File->MaxPosition = File->Size;\r | |
561 | } else {\r | |
562 | Key = 0;\r | |
563 | do {\r | |
564 | File->FvType = EFI_FV_FILETYPE_ALL;\r | |
565 | GetNextFileStatus = File->Fv->GetNextFile (\r | |
3402aac7 | 566 | File->Fv,\r |
1e57a462 | 567 | &Key,\r |
3402aac7 RC |
568 | &File->FvType,\r |
569 | &File->FvNameGuid,\r | |
570 | &File->FvAttributes,\r | |
1e57a462 | 571 | &File->Size\r |
572 | );\r | |
573 | if (!EFI_ERROR (GetNextFileStatus)) {\r | |
574 | // Compare GUID first\r | |
575 | Status = CompareGuidToString (&File->FvNameGuid, FileName);\r | |
576 | if (!EFI_ERROR(Status)) {\r | |
577 | break;\r | |
578 | }\r | |
579 | \r | |
580 | Section = NULL;\r | |
581 | Status = File->Fv->ReadSection (\r | |
582 | File->Fv,\r | |
583 | &File->FvNameGuid,\r | |
584 | EFI_SECTION_USER_INTERFACE,\r | |
585 | 0,\r | |
586 | &Section,\r | |
587 | &SectionSize,\r | |
588 | &AuthenticationStatus\r | |
589 | );\r | |
590 | if (!EFI_ERROR (Status)) {\r | |
591 | UnicodeStrToAsciiStr (Section, AsciiSection);\r | |
592 | if (AsciiStriCmp (FileName, AsciiSection) == 0) {\r | |
593 | FreePool (Section);\r | |
594 | break;\r | |
595 | }\r | |
596 | FreePool (Section);\r | |
597 | }\r | |
598 | }\r | |
599 | } while (!EFI_ERROR (GetNextFileStatus));\r | |
600 | \r | |
601 | if (EFI_ERROR (GetNextFileStatus)) {\r | |
602 | return GetNextFileStatus;\r | |
603 | }\r | |
604 | \r | |
605 | if (OpenMode != EFI_SECTION_ALL) {\r | |
606 | // Calculate the size of the section we are targeting\r | |
607 | Section = NULL;\r | |
608 | File->Size = 0;\r | |
609 | Status = File->Fv->ReadSection (\r | |
610 | File->Fv,\r | |
611 | &File->FvNameGuid,\r | |
612 | (EFI_SECTION_TYPE)OpenMode,\r | |
613 | 0,\r | |
614 | &Section,\r | |
615 | &File->Size,\r | |
616 | &AuthenticationStatus\r | |
617 | );\r | |
618 | if (EFI_ERROR (Status)) {\r | |
619 | return Status;\r | |
620 | }\r | |
621 | }\r | |
622 | \r | |
623 | File->MaxPosition = File->Size;\r | |
624 | EfiInitializeFwVolDevicepathNode (&DevicePathNode, &File->FvNameGuid);\r | |
625 | File->DevicePath = AppendDevicePathNode (DevicePath, (EFI_DEVICE_PATH_PROTOCOL *)&DevicePathNode);\r | |
626 | }\r | |
627 | \r | |
628 | \r | |
629 | // FVB not required if FV was soft loaded...\r | |
630 | return EFI_SUCCESS;\r | |
631 | }\r | |
632 | \r | |
633 | \r | |
634 | \r | |
635 | \r | |
636 | /**\r | |
3402aac7 | 637 | Open a device named by PathName. The PathName includes a device name and\r |
1e57a462 | 638 | path separated by a :. See file header for more details on the PathName\r |
639 | syntax. There is no checking to prevent a file from being opened more than\r | |
3402aac7 | 640 | one type.\r |
1e57a462 | 641 | \r |
642 | SectionType is only used to open an FV. Each file in an FV contains multiple\r | |
643 | sections and only the SectionType section is opened.\r | |
644 | \r | |
645 | For any file that is opened with EfiOpen() must be closed with EfiClose().\r | |
646 | \r | |
3402aac7 | 647 | @param PathName Path to parse to open\r |
1e57a462 | 648 | @param OpenMode Same as EFI_FILE.Open()\r |
649 | @param SectionType Section in FV to open.\r | |
650 | \r | |
651 | @return NULL Open failed\r | |
652 | @return Valid EFI_OPEN_FILE handle\r | |
653 | \r | |
654 | **/\r | |
655 | EFI_OPEN_FILE *\r | |
656 | EfiOpen (\r | |
657 | IN CHAR8 *PathName,\r | |
658 | IN CONST UINT64 OpenMode,\r | |
659 | IN CONST EFI_SECTION_TYPE SectionType\r | |
660 | )\r | |
661 | {\r | |
662 | EFI_STATUS Status;\r | |
663 | EFI_OPEN_FILE *File;\r | |
664 | EFI_OPEN_FILE FileData;\r | |
665 | UINTN StrLen;\r | |
666 | UINTN FileStart;\r | |
667 | UINTN DevNumber = 0;\r | |
668 | EFI_OPEN_FILE_GUARD *GuardFile;\r | |
669 | BOOLEAN VolumeNameMatch;\r | |
670 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
671 | UINTN Size;\r | |
672 | EFI_IP_ADDRESS Ip;\r | |
673 | CHAR8 *CwdPlusPathName;\r | |
674 | UINTN Index;\r | |
675 | EFI_SECTION_TYPE ModifiedSectionType;\r | |
676 | \r | |
677 | EblUpdateDeviceLists ();\r | |
678 | \r | |
679 | File = &FileData;\r | |
680 | ZeroMem (File, sizeof (EFI_OPEN_FILE));\r | |
681 | \r | |
682 | StrLen = AsciiStrSize (PathName);\r | |
683 | if (StrLen <= 1) {\r | |
684 | // Smallest valid path is 1 char and a null\r | |
685 | return NULL;\r | |
686 | }\r | |
687 | \r | |
688 | for (FileStart = 0; FileStart < StrLen; FileStart++) {\r | |
689 | if (PathName[FileStart] == ':') {\r | |
690 | FileStart++;\r | |
691 | break;\r | |
692 | }\r | |
693 | }\r | |
694 | \r | |
695 | //\r | |
696 | // Matching volume name has precedence over handle based names\r | |
697 | //\r | |
698 | VolumeNameMatch = EblMatchVolumeName (PathName, FileStart, &DevNumber);\r | |
699 | if (!VolumeNameMatch) {\r | |
700 | if (FileStart == StrLen) {\r | |
701 | // No Volume name or device name, so try Current Working Directory\r | |
702 | if (gCwd == NULL) {\r | |
703 | // No CWD\r | |
704 | return NULL;\r | |
705 | }\r | |
706 | \r | |
707 | // We could add a current working directory concept\r | |
708 | CwdPlusPathName = AllocatePool (AsciiStrSize (gCwd) + AsciiStrSize (PathName));\r | |
709 | if (CwdPlusPathName == NULL) {\r | |
710 | return NULL;\r | |
711 | }\r | |
712 | \r | |
713 | if ((PathName[0] == '/') || (PathName[0] == '\\')) {\r | |
3402aac7 | 714 | // PathName starts in / so this means we go to the root of the device in the CWD.\r |
1e57a462 | 715 | CwdPlusPathName[0] = '\0';\r |
716 | for (FileStart = 0; gCwd[FileStart] != '\0'; FileStart++) {\r | |
717 | CwdPlusPathName[FileStart] = gCwd[FileStart];\r | |
718 | if (gCwd[FileStart] == ':') {\r | |
719 | FileStart++;\r | |
720 | CwdPlusPathName[FileStart] = '\0';\r | |
721 | break;\r | |
722 | }\r | |
723 | }\r | |
724 | } else {\r | |
725 | AsciiStrCpy (CwdPlusPathName, gCwd);\r | |
726 | StrLen = AsciiStrLen (gCwd);\r | |
727 | if ((*PathName != '/') && (*PathName != '\\') && (gCwd[StrLen-1] != '/') && (gCwd[StrLen-1] != '\\')) {\r | |
728 | AsciiStrCat (CwdPlusPathName, "\\");\r | |
729 | }\r | |
730 | }\r | |
731 | \r | |
732 | AsciiStrCat (CwdPlusPathName, PathName);\r | |
733 | if (AsciiStrStr (CwdPlusPathName, ":") == NULL) {\r | |
734 | // Extra error check to make sure we don't recurse and blow stack\r | |
735 | return NULL;\r | |
736 | }\r | |
737 | \r | |
738 | File = EfiOpen (CwdPlusPathName, OpenMode, SectionType);\r | |
739 | FreePool (CwdPlusPathName);\r | |
740 | return File;\r | |
741 | }\r | |
742 | \r | |
3402aac7 | 743 | DevNumber = EblConvertDevStringToNumber ((CHAR8 *)PathName);\r |
1e57a462 | 744 | }\r |
745 | \r | |
746 | File->DeviceName = AllocatePool (StrLen);\r | |
747 | AsciiStrCpy (File->DeviceName, PathName);\r | |
748 | File->DeviceName[FileStart - 1] = '\0';\r | |
749 | File->FileName = &File->DeviceName[FileStart];\r | |
750 | if (File->FileName[0] == '\0') {\r | |
751 | // if it is just a file name use / as root\r | |
752 | File->FileName = "\\";\r | |
3402aac7 | 753 | }\r |
1e57a462 | 754 | \r |
755 | //\r | |
756 | // Use best match algorithm on the dev names so we only need to look at the\r | |
3402aac7 | 757 | // first few charters to match the full device name. Short name forms are\r |
1e57a462 | 758 | // legal from the caller.\r |
759 | //\r | |
760 | Status = EFI_SUCCESS;\r | |
761 | if (*PathName == 'f' || *PathName == 'F' || VolumeNameMatch) {\r | |
762 | if (PathName[1] == 's' || PathName[1] == 'S' || VolumeNameMatch) {\r | |
763 | if (DevNumber >= mFsCount) {\r | |
764 | goto ErrorExit;\r | |
765 | }\r | |
766 | File->Type = EfiOpenFileSystem;\r | |
767 | File->EfiHandle = mFs[DevNumber];\r | |
768 | Status = EblFileDevicePath (File, &PathName[FileStart], OpenMode);\r | |
769 | \r | |
3402aac7 | 770 | } else if (PathName[1] == 'v' || PathName[1] == 'V') {\r |
1e57a462 | 771 | if (DevNumber >= mFvCount) {\r |
772 | goto ErrorExit;\r | |
773 | }\r | |
774 | File->Type = EfiOpenFirmwareVolume;\r | |
775 | File->EfiHandle = mFv[DevNumber];\r | |
776 | \r | |
777 | if ((PathName[FileStart] == '/') || (PathName[FileStart] == '\\')) {\r | |
778 | // Skip leading / as its not really needed for the FV since no directories are supported\r | |
779 | FileStart++;\r | |
780 | }\r | |
781 | \r | |
782 | // Check for 2nd :\r | |
783 | ModifiedSectionType = SectionType;\r | |
784 | for (Index = FileStart; PathName[Index] != '\0'; Index++) {\r | |
785 | if (PathName[Index] == ':') {\r | |
786 | // Support fv0:\DxeCore:0x10\r | |
3402aac7 | 787 | // This means open the PE32 Section of the file\r |
1e57a462 | 788 | ModifiedSectionType = (EFI_SECTION_TYPE)AsciiStrHexToUintn (&PathName[Index + 1]);\r |
789 | PathName[Index] = '\0';\r | |
790 | }\r | |
791 | }\r | |
792 | File->FvSectionType = ModifiedSectionType;\r | |
793 | Status = EblFvFileDevicePath (File, &PathName[FileStart], ModifiedSectionType);\r | |
794 | }\r | |
795 | } else if ((*PathName == 'A') || (*PathName == 'a')) {\r | |
796 | // Handle a:0x10000000:0x1234 address form a:ADDRESS:SIZE\r | |
797 | File->Type = EfiOpenMemoryBuffer;\r | |
798 | // 1st colon is at PathName[FileStart - 1]\r | |
799 | File->Buffer = (VOID *)AsciiStrHexToUintn (&PathName[FileStart]);\r | |
800 | \r | |
801 | // Find 2nd colon\r | |
802 | while ((PathName[FileStart] != ':') && (PathName[FileStart] != '\0')) {\r | |
803 | FileStart++;\r | |
804 | }\r | |
805 | \r | |
806 | // If we ran out of string, there's no extra data\r | |
807 | if (PathName[FileStart] == '\0') {\r | |
808 | File->Size = 0;\r | |
809 | } else {\r | |
810 | File->Size = AsciiStrHexToUintn (&PathName[FileStart + 1]);\r | |
811 | }\r | |
812 | \r | |
813 | // if there's no number after the second colon, default\r | |
814 | // the end of memory\r | |
815 | if (File->Size == 0) {\r | |
816 | File->Size = (UINTN)(0 - (UINTN)File->Buffer);\r | |
817 | }\r | |
818 | \r | |
819 | File->MaxPosition = File->Size;\r | |
820 | File->BaseOffset = (UINTN)File->Buffer;\r | |
821 | \r | |
822 | } else if (*PathName== 'l' || *PathName == 'L') {\r | |
823 | if (DevNumber >= mLoadFileCount) {\r | |
824 | goto ErrorExit;\r | |
825 | }\r | |
826 | File->Type = EfiOpenLoadFile;\r | |
827 | File->EfiHandle = mLoadFile[DevNumber];\r | |
828 | \r | |
829 | Status = gBS->HandleProtocol (File->EfiHandle, &gEfiLoadFileProtocolGuid, (VOID **)&File->LoadFile);\r | |
830 | if (EFI_ERROR (Status)) {\r | |
831 | goto ErrorExit;\r | |
832 | }\r | |
833 | \r | |
834 | Status = gBS->HandleProtocol (File->EfiHandle, &gEfiDevicePathProtocolGuid, (VOID **)&DevicePath);\r | |
835 | if (EFI_ERROR (Status)) {\r | |
836 | goto ErrorExit;\r | |
837 | }\r | |
838 | File->DevicePath = DuplicateDevicePath (DevicePath);\r | |
839 | \r | |
840 | } else if (*PathName == 'b' || *PathName == 'B') {\r | |
841 | // Handle b#:0x10000000:0x1234 address form b#:ADDRESS:SIZE\r | |
842 | if (DevNumber >= mBlkIoCount) {\r | |
843 | goto ErrorExit;\r | |
844 | }\r | |
845 | File->Type = EfiOpenBlockIo;\r | |
846 | File->EfiHandle = mBlkIo[DevNumber];\r | |
847 | EblFileDevicePath (File, "", OpenMode);\r | |
848 | \r | |
849 | // 1st colon is at PathName[FileStart - 1]\r | |
850 | File->DiskOffset = AsciiStrHexToUintn (&PathName[FileStart]);\r | |
851 | \r | |
852 | // Find 2nd colon\r | |
853 | while ((PathName[FileStart] != ':') && (PathName[FileStart] != '\0')) {\r | |
854 | FileStart++;\r | |
855 | }\r | |
856 | \r | |
857 | // If we ran out of string, there's no extra data\r | |
858 | if (PathName[FileStart] == '\0') {\r | |
859 | Size = 0;\r | |
860 | } else {\r | |
861 | Size = AsciiStrHexToUintn (&PathName[FileStart + 1]);\r | |
862 | }\r | |
863 | \r | |
864 | // if a zero size is passed in (or the size is left out entirely),\r | |
865 | // go to the end of the device.\r | |
866 | if (Size == 0) {\r | |
867 | File->Size = File->Size - File->DiskOffset;\r | |
868 | } else {\r | |
869 | File->Size = Size;\r | |
870 | }\r | |
871 | \r | |
872 | File->MaxPosition = File->Size;\r | |
873 | File->BaseOffset = File->DiskOffset;\r | |
874 | } else if ((*PathName) >= '0' && (*PathName <= '9')) {\r | |
875 | \r | |
876 | // Get current IP address\r | |
877 | Status = EblGetCurrentIpAddress (&Ip);\r | |
878 | if (EFI_ERROR(Status)) {\r | |
879 | AsciiPrint("Device IP Address is not configured.\n");\r | |
880 | goto ErrorExit;\r | |
881 | }\r | |
882 | \r | |
883 | \r | |
884 | // Parse X.X.X.X:Filename, only support IPv4 TFTP for now...\r | |
885 | File->Type = EfiOpenTftp;\r | |
886 | File->IsDirty = FALSE;\r | |
887 | File->IsBufferValid = FALSE;\r | |
888 | \r | |
889 | Status = ConvertIpStringToEfiIp (PathName, &File->ServerIp);\r | |
890 | }\r | |
891 | \r | |
892 | if (EFI_ERROR (Status)) {\r | |
893 | goto ErrorExit;\r | |
894 | }\r | |
895 | \r | |
896 | GuardFile = (EFI_OPEN_FILE_GUARD *)AllocateZeroPool (sizeof (EFI_OPEN_FILE_GUARD));\r | |
897 | if (GuardFile == NULL) {\r | |
898 | goto ErrorExit;\r | |
899 | }\r | |
900 | \r | |
901 | GuardFile->Header = EFI_OPEN_FILE_GUARD_HEADER;\r | |
902 | CopyMem (&(GuardFile->File), &FileData, sizeof (EFI_OPEN_FILE));\r | |
903 | GuardFile->Footer = EFI_OPEN_FILE_GUARD_FOOTER;\r | |
904 | \r | |
905 | return &(GuardFile->File);\r | |
906 | \r | |
907 | ErrorExit:\r | |
908 | FreePool (File->DeviceName);\r | |
909 | return NULL;\r | |
910 | }\r | |
911 | \r | |
912 | #define FILE_COPY_CHUNK 0x01000000\r | |
913 | \r | |
914 | EFI_STATUS\r | |
915 | EfiCopyFile (\r | |
916 | IN CHAR8 *DestinationFile,\r | |
917 | IN CHAR8 *SourceFile\r | |
918 | )\r | |
919 | {\r | |
920 | EFI_OPEN_FILE *Source = NULL;\r | |
921 | EFI_OPEN_FILE *Destination = NULL;\r | |
922 | EFI_STATUS Status = EFI_SUCCESS;\r | |
923 | VOID *Buffer = NULL;\r | |
924 | UINTN Size;\r | |
925 | UINTN Offset;\r | |
926 | UINTN Chunk = FILE_COPY_CHUNK;\r | |
927 | \r | |
928 | Source = EfiOpen (SourceFile, EFI_FILE_MODE_READ, 0);\r | |
929 | if (Source == NULL) {\r | |
930 | AsciiPrint("Source file open error.\n");\r | |
931 | Status = EFI_NOT_FOUND;\r | |
932 | goto Exit;\r | |
933 | }\r | |
934 | \r | |
935 | Destination = EfiOpen (DestinationFile, EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE, 0);\r | |
936 | if (Destination == NULL) {\r | |
937 | AsciiPrint("Destination file open error.\n");\r | |
938 | Status = EFI_NOT_FOUND;\r | |
939 | goto Exit;\r | |
940 | }\r | |
941 | \r | |
942 | Buffer = AllocatePool(FILE_COPY_CHUNK);\r | |
943 | if (Buffer == NULL) {\r | |
944 | Status = EFI_OUT_OF_RESOURCES;\r | |
945 | goto Exit;\r | |
946 | }\r | |
947 | \r | |
948 | Size = EfiTell(Source, NULL);\r | |
949 | \r | |
950 | for (Offset = 0; Offset + FILE_COPY_CHUNK <= Size; Offset += Chunk) {\r | |
951 | Chunk = FILE_COPY_CHUNK;\r | |
952 | \r | |
953 | Status = EfiRead(Source, Buffer, &Chunk);\r | |
954 | if (EFI_ERROR(Status)) {\r | |
955 | AsciiPrint("Read file error %r\n", Status);\r | |
956 | goto Exit;\r | |
957 | }\r | |
958 | \r | |
959 | Status = EfiWrite(Destination, Buffer, &Chunk);\r | |
960 | if (EFI_ERROR(Status)) {\r | |
961 | AsciiPrint("Write file error %r\n", Status);\r | |
962 | goto Exit;\r | |
3402aac7 | 963 | }\r |
1e57a462 | 964 | }\r |
965 | \r | |
966 | // Any left over?\r | |
967 | if (Offset < Size) {\r | |
968 | Chunk = Size - Offset;\r | |
969 | \r | |
970 | Status = EfiRead(Source, Buffer, &Chunk);\r | |
971 | if (EFI_ERROR(Status)) {\r | |
972 | AsciiPrint("Read file error\n");\r | |
973 | goto Exit;\r | |
974 | }\r | |
975 | \r | |
976 | Status = EfiWrite(Destination, Buffer, &Chunk);\r | |
977 | if (EFI_ERROR(Status)) {\r | |
978 | AsciiPrint("Write file error\n");\r | |
979 | goto Exit;\r | |
3402aac7 | 980 | }\r |
1e57a462 | 981 | }\r |
982 | \r | |
983 | Exit:\r | |
984 | if (Source != NULL) {\r | |
985 | Status = EfiClose(Source);\r | |
986 | if (EFI_ERROR(Status)) {\r | |
987 | AsciiPrint("Source close error");\r | |
988 | }\r | |
989 | }\r | |
990 | \r | |
991 | if (Destination != NULL) {\r | |
992 | Status = EfiClose(Destination);\r | |
993 | if (EFI_ERROR(Status)) {\r | |
994 | AsciiPrint("Destination close error");\r | |
995 | }\r | |
996 | }\r | |
997 | \r | |
998 | if (Buffer != NULL) {\r | |
999 | FreePool(Buffer);\r | |
1000 | }\r | |
1001 | \r | |
1002 | return Status;\r | |
1003 | }\r | |
1004 | \r | |
1005 | /**\r | |
1006 | Use DeviceType and Index to form a valid PathName and try and open it.\r | |
1007 | \r | |
1008 | @param DeviceType Device type to open\r | |
1009 | @param Index Device Index to use. Zero relative.\r | |
1010 | \r | |
1011 | @return NULL Open failed\r | |
1012 | @return Valid EFI_OPEN_FILE handle\r | |
1013 | \r | |
1014 | **/\r | |
1015 | EFI_OPEN_FILE *\r | |
1016 | EfiDeviceOpenByType (\r | |
1017 | IN EFI_OPEN_FILE_TYPE DeviceType,\r | |
1018 | IN UINTN Index\r | |
1019 | )\r | |
1020 | {\r | |
1021 | CHAR8 *DevStr;\r | |
1022 | CHAR8 Path[MAX_CMD_LINE];\r | |
1023 | \r | |
1024 | switch (DeviceType) {\r | |
1025 | case EfiOpenLoadFile:\r | |
1026 | DevStr = "loadfile%d:";\r | |
1027 | break;\r | |
1028 | case EfiOpenFirmwareVolume:\r | |
3402aac7 | 1029 | DevStr = "fv%d:";\r |
1e57a462 | 1030 | break;\r |
1031 | case EfiOpenFileSystem:\r | |
3402aac7 | 1032 | DevStr = "fs%d:";\r |
1e57a462 | 1033 | break;\r |
1034 | case EfiOpenBlockIo:\r | |
3402aac7 | 1035 | DevStr = "blk%d:";\r |
1e57a462 | 1036 | break;\r |
1037 | case EfiOpenMemoryBuffer:\r | |
3402aac7 | 1038 | DevStr = "a%d:";\r |
1e57a462 | 1039 | break;\r |
1040 | default:\r | |
1041 | return NULL;\r | |
1042 | }\r | |
1043 | \r | |
1044 | AsciiSPrint (Path, MAX_PATHNAME, DevStr, Index);\r | |
1045 | \r | |
1046 | return EfiOpen (Path, EFI_FILE_MODE_READ, 0);\r | |
1047 | }\r | |
1048 | \r | |
1049 | \r | |
1050 | /**\r | |
1051 | Close a file handle opened by EfiOpen() and free all resources allocated by\r | |
1052 | EfiOpen().\r | |
1053 | \r | |
1054 | @param Stream Open File Handle\r | |
1055 | \r | |
1056 | @return EFI_INVALID_PARAMETER Stream is not an Open File\r | |
1057 | @return EFI_SUCCESS Steam closed\r | |
1058 | \r | |
1059 | **/\r | |
1060 | EFI_STATUS\r | |
1061 | EfiClose (\r | |
1062 | IN EFI_OPEN_FILE *File\r | |
1063 | )\r | |
1064 | {\r | |
1065 | EFI_STATUS Status;\r | |
1066 | UINT64 TftpBufferSize;\r | |
1067 | \r | |
1068 | if (!FileHandleValid (File)) {\r | |
1069 | return EFI_INVALID_PARAMETER;\r | |
1070 | }\r | |
1071 | \r | |
1072 | //Write the buffer contents to TFTP file.\r | |
1073 | if ((File->Type == EfiOpenTftp) && (File->IsDirty)) {\r | |
1074 | \r | |
1075 | TftpBufferSize = File->Size;\r | |
1076 | Status = EblMtftp (\r | |
3402aac7 RC |
1077 | EFI_PXE_BASE_CODE_TFTP_WRITE_FILE,\r |
1078 | File->Buffer,\r | |
1079 | TRUE,\r | |
1080 | &TftpBufferSize,\r | |
1081 | NULL,\r | |
1082 | &File->ServerIp,\r | |
1083 | (UINT8 *)File->FileName,\r | |
1084 | NULL,\r | |
1e57a462 | 1085 | FALSE\r |
1086 | );\r | |
1087 | if (EFI_ERROR(Status)) {\r | |
1088 | AsciiPrint("TFTP error during APPLE_NSP_TFTP_WRITE_FILE: %r\n", Status);\r | |
1089 | return Status;\r | |
1090 | }\r | |
1091 | }\r | |
1092 | \r | |
3402aac7 | 1093 | if ((File->Type == EfiOpenLoadFile) ||\r |
1e57a462 | 1094 | ((File->Type == EfiOpenTftp) && (File->IsBufferValid == TRUE)) ||\r |
1095 | ((File->Type == EfiOpenFirmwareVolume) && (File->IsBufferValid == TRUE))) {\r | |
1096 | EblFreePool(File->Buffer);\r | |
1097 | }\r | |
1098 | \r | |
1099 | EblFreePool (File->DevicePath);\r | |
1100 | EblFreePool (File->DeviceName);\r | |
1101 | EblFreePool (File->FsFileInfo);\r | |
1102 | EblFreePool (File->FsInfo);\r | |
1103 | \r | |
1104 | if (File->FsFileHandle != NULL) {\r | |
1105 | File->FsFileHandle->Close (File->FsFileHandle);\r | |
1106 | }\r | |
1107 | \r | |
1108 | // Need to free File and it's Guard structures\r | |
1109 | EblFreePool (BASE_CR (File, EFI_OPEN_FILE_GUARD, File));\r | |
1110 | return EFI_SUCCESS;\r | |
1111 | }\r | |
1112 | \r | |
1113 | \r | |
1114 | /**\r | |
3402aac7 | 1115 | Return the size of the file represented by Stream. Also return the current\r |
1e57a462 | 1116 | Seek position. Opening a file will enable a valid file size to be returned.\r |
3402aac7 | 1117 | LoadFile is an exception as a load file size is set to zero.\r |
1e57a462 | 1118 | \r |
1119 | @param Stream Open File Handle\r | |
1120 | \r | |
1121 | @return 0 Stream is not an Open File or a valid LoadFile handle\r | |
1122 | \r | |
1123 | **/\r | |
1124 | UINTN\r | |
1125 | EfiTell (\r | |
1126 | IN EFI_OPEN_FILE *File,\r | |
1127 | OUT EFI_LBA *CurrentPosition OPTIONAL\r | |
1128 | )\r | |
1129 | {\r | |
1130 | EFI_STATUS Status;\r | |
1131 | UINT64 BufferSize = 0;\r | |
1132 | \r | |
1133 | if (!FileHandleValid (File)) {\r | |
1134 | return 0;\r | |
1135 | }\r | |
1136 | \r | |
1137 | if (CurrentPosition != NULL) {\r | |
1138 | *CurrentPosition = File->CurrentPosition;\r | |
1139 | }\r | |
1140 | \r | |
1141 | if (File->Type == EfiOpenLoadFile) {\r | |
1142 | // Figure out the File->Size\r | |
1143 | File->Buffer = NULL;\r | |
1144 | File->Size = 0;\r | |
1145 | Status = File->LoadFile->LoadFile (File->LoadFile, File->DevicePath, FALSE, &File->Size, File->Buffer);\r | |
1146 | if (Status != EFI_BUFFER_TOO_SMALL) {\r | |
1147 | return 0;\r | |
1148 | }\r | |
1149 | \r | |
1150 | File->MaxPosition = (UINT64)File->Size;\r | |
1151 | } else if (File->Type == EfiOpenTftp) {\r | |
1152 | \r | |
1153 | Status = EblMtftp (\r | |
1154 | EFI_PXE_BASE_CODE_TFTP_GET_FILE_SIZE,\r | |
1155 | NULL,\r | |
1156 | FALSE,\r | |
1157 | &BufferSize,\r | |
1158 | NULL,\r | |
1159 | &File->ServerIp,\r | |
1160 | (UINT8 *)File->FileName,\r | |
1161 | NULL,\r | |
1162 | TRUE\r | |
1163 | );\r | |
1164 | if (EFI_ERROR(Status)) {\r | |
1165 | AsciiPrint("TFTP error during APPLE_NSP_TFTP_GET_FILE_SIZE: %r\n", Status);\r | |
1166 | return 0;\r | |
1167 | }\r | |
1168 | \r | |
1169 | File->Size = (UINTN)BufferSize;\r | |
1170 | File->MaxPosition = File->Size;\r | |
1171 | }\r | |
1172 | \r | |
1173 | return File->Size;\r | |
1174 | }\r | |
1175 | \r | |
1176 | \r | |
1177 | /**\r | |
1178 | Seek to the Offset location in the file. LoadFile and FV device types do\r | |
3402aac7 | 1179 | not support EfiSeek(). It is not possible to grow the file size using\r |
1e57a462 | 1180 | EfiSeek().\r |
1181 | \r | |
1182 | SeekType defines how use Offset to calculate the new file position:\r | |
1183 | EfiSeekStart : Position = Offset\r | |
1184 | EfiSeekCurrent: Position is Offset bytes from the current position\r | |
1185 | EfiSeekEnd : Only supported if Offset is zero to seek to end of file.\r | |
1186 | \r | |
1187 | @param Stream Open File Handle\r | |
3402aac7 | 1188 | @param Offset Offset to seek too.\r |
1e57a462 | 1189 | @param SeekType Type of seek to perform\r |
1190 | \r | |
1191 | \r | |
1192 | @return EFI_INVALID_PARAMETER Stream is not an Open File\r | |
1193 | @return EFI_UNSUPPORTED LoadFile and FV do not support Seek\r | |
1194 | @return EFI_NOT_FOUND Seek past the end of the file.\r | |
1195 | @return EFI_SUCCESS Steam closed\r | |
1196 | \r | |
1197 | **/\r | |
1198 | EFI_STATUS\r | |
1199 | EfiSeek (\r | |
1200 | IN EFI_OPEN_FILE *File,\r | |
1201 | IN EFI_LBA Offset,\r | |
1202 | IN EFI_SEEK_TYPE SeekType\r | |
1203 | )\r | |
1204 | {\r | |
1205 | EFI_STATUS Status;\r | |
1206 | UINT64 CurrentPosition;\r | |
1207 | \r | |
1208 | if (!FileHandleValid (File)) {\r | |
1209 | return EFI_INVALID_PARAMETER;\r | |
1210 | }\r | |
1211 | \r | |
1212 | if (File->Type == EfiOpenLoadFile) {\r | |
1213 | // LoadFile does not support Seek\r | |
1214 | return EFI_UNSUPPORTED;\r | |
1215 | }\r | |
1216 | \r | |
1217 | CurrentPosition = File->CurrentPosition;\r | |
1218 | switch (SeekType) {\r | |
1219 | case EfiSeekStart:\r | |
1220 | if (Offset > File->MaxPosition) {\r | |
1221 | return EFI_NOT_FOUND;\r | |
1222 | }\r | |
1223 | CurrentPosition = Offset;\r | |
1224 | break;\r | |
1225 | \r | |
1226 | case EfiSeekCurrent:\r | |
1227 | if ((File->CurrentPosition + Offset) > File->MaxPosition) {\r | |
1228 | return EFI_NOT_FOUND;\r | |
1229 | }\r | |
1230 | CurrentPosition += Offset;\r | |
1231 | break;\r | |
1232 | \r | |
1233 | case EfiSeekEnd:\r | |
1234 | if (Offset != 0) {\r | |
1235 | // We don't support growing file size via seeking past end of file\r | |
1236 | return EFI_UNSUPPORTED;\r | |
1237 | }\r | |
1238 | CurrentPosition = File->MaxPosition;\r | |
1239 | break;\r | |
1240 | \r | |
1241 | default:\r | |
1242 | return EFI_NOT_FOUND;\r | |
1243 | }\r | |
1244 | \r | |
1245 | Status = EFI_SUCCESS;\r | |
1246 | if (File->FsFileHandle != NULL) {\r | |
1247 | Status = File->FsFileHandle->SetPosition (File->FsFileHandle, CurrentPosition);\r | |
1248 | }\r | |
1249 | \r | |
1250 | if (!EFI_ERROR (Status)) {\r | |
1251 | File->CurrentPosition = CurrentPosition;\r | |
1252 | }\r | |
1253 | \r | |
1254 | return Status;\r | |
1255 | }\r | |
1256 | \r | |
1257 | EFI_STATUS\r | |
1258 | CacheTftpFile (\r | |
1259 | IN OUT EFI_OPEN_FILE *File\r | |
1260 | )\r | |
1261 | {\r | |
1262 | EFI_STATUS Status;\r | |
1263 | UINT64 TftpBufferSize;\r | |
1264 | \r | |
1265 | if (File->IsBufferValid) {\r | |
1266 | return EFI_SUCCESS;\r | |
1267 | }\r | |
1268 | \r | |
1269 | // Make sure the file size is set.\r | |
1270 | EfiTell (File, NULL);\r | |
1271 | \r | |
1272 | //Allocate a buffer to hold the whole file.\r | |
1273 | File->Buffer = AllocatePool(File->Size);\r | |
1274 | if (File->Buffer == NULL) {\r | |
1275 | return EFI_OUT_OF_RESOURCES;\r | |
1276 | }\r | |
1277 | \r | |
1278 | TftpBufferSize = File->Size;\r | |
1279 | \r | |
1280 | Status = EblMtftp (\r | |
3402aac7 RC |
1281 | EFI_PXE_BASE_CODE_TFTP_READ_FILE,\r |
1282 | File->Buffer,\r | |
1283 | FALSE,\r | |
1284 | &TftpBufferSize,\r | |
1285 | NULL,\r | |
1286 | &File->ServerIp,\r | |
1287 | (UINT8 *)File->FileName,\r | |
1288 | NULL,\r | |
1e57a462 | 1289 | FALSE);\r |
1290 | if (EFI_ERROR(Status)) {\r | |
1291 | AsciiPrint("TFTP error during APPLE_NSP_TFTP_READ_FILE: %r\n", Status);\r | |
1292 | FreePool(File->Buffer);\r | |
1293 | return Status;\r | |
1294 | }\r | |
1295 | \r | |
1296 | // Set the buffer valid flag.\r | |
1297 | File->IsBufferValid = TRUE;\r | |
1298 | \r | |
1299 | return Status;\r | |
1300 | }\r | |
1301 | \r | |
1302 | /**\r | |
1303 | Read BufferSize bytes from the current location in the file. For load file,\r | |
3402aac7 | 1304 | FV, and TFTP case you must read the entire file.\r |
1e57a462 | 1305 | \r |
1306 | @param Stream Open File Handle\r | |
3402aac7 | 1307 | @param Buffer Caller allocated buffer.\r |
1e57a462 | 1308 | @param BufferSize Size of buffer in bytes.\r |
1309 | \r | |
1310 | \r | |
1311 | @return EFI_SUCCESS Stream is not an Open File\r | |
1312 | @return EFI_END_OF_FILE Tried to read past the end of the file\r | |
1313 | @return EFI_INVALID_PARAMETER Stream is not an open file handle\r | |
1314 | @return EFI_BUFFER_TOO_SMALL Buffer is not big enough to do the read\r | |
1315 | @return "other" Error returned from device read\r | |
1316 | \r | |
1317 | **/\r | |
1318 | EFI_STATUS\r | |
1319 | EfiRead (\r | |
1320 | IN EFI_OPEN_FILE *File,\r | |
1321 | OUT VOID *Buffer,\r | |
1322 | OUT UINTN *BufferSize\r | |
1323 | )\r | |
1324 | {\r | |
1325 | EFI_STATUS Status;\r | |
1326 | UINT32 AuthenticationStatus;\r | |
1327 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
1328 | \r | |
1329 | if (!FileHandleValid (File)) {\r | |
1330 | return EFI_INVALID_PARAMETER;\r | |
1331 | }\r | |
1332 | \r | |
1333 | // Don't read past the end of the file.\r | |
1334 | if ((File->CurrentPosition + *BufferSize) > File->MaxPosition) {\r | |
1335 | return EFI_END_OF_FILE;\r | |
1336 | }\r | |
1337 | \r | |
1338 | switch (File->Type) {\r | |
1339 | case EfiOpenLoadFile:\r | |
1340 | // Figure out the File->Size\r | |
1341 | EfiTell (File, NULL);\r | |
1342 | \r | |
1343 | Status = File->LoadFile->LoadFile (File->LoadFile, File->DevicePath, FALSE, BufferSize, Buffer);\r | |
1344 | break;\r | |
1345 | \r | |
1346 | case EfiOpenFirmwareVolume:\r | |
1347 | if (CompareGuid (&File->FvNameGuid, &gZeroGuid)) {\r | |
3402aac7 | 1348 | // This is the entire FV device, so treat like a memory buffer\r |
1e57a462 | 1349 | CopyMem (Buffer, (VOID *)(UINTN)(File->FvStart + File->CurrentPosition), *BufferSize);\r |
1350 | File->CurrentPosition += *BufferSize;\r | |
1351 | Status = EFI_SUCCESS;\r | |
1352 | } else {\r | |
1353 | if (File->Buffer == NULL) {\r | |
1354 | if (File->FvSectionType == EFI_SECTION_ALL) {\r | |
1355 | Status = File->Fv->ReadFile (\r | |
1356 | File->Fv,\r | |
1357 | &File->FvNameGuid,\r | |
1358 | (VOID **)&File->Buffer,\r | |
1359 | &File->Size,\r | |
1360 | &File->FvType,\r | |
1361 | &File->FvAttributes,\r | |
1362 | &AuthenticationStatus\r | |
1363 | );\r | |
1364 | } else {\r | |
1365 | Status = File->Fv->ReadSection (\r | |
1366 | File->Fv,\r | |
1367 | &File->FvNameGuid,\r | |
1368 | File->FvSectionType,\r | |
1369 | 0,\r | |
1370 | (VOID **)&File->Buffer,\r | |
1371 | &File->Size,\r | |
1372 | &AuthenticationStatus\r | |
1373 | );\r | |
1374 | }\r | |
1375 | if (EFI_ERROR (Status)) {\r | |
1376 | return Status;\r | |
1377 | }\r | |
1378 | File->IsBufferValid = TRUE;\r | |
1379 | }\r | |
1380 | // Operate on the cached buffer so Seek will work\r | |
1381 | CopyMem (Buffer, File->Buffer + File->CurrentPosition, *BufferSize);\r | |
1382 | File->CurrentPosition += *BufferSize;\r | |
1383 | Status = EFI_SUCCESS;\r | |
1384 | }\r | |
1385 | break;\r | |
1386 | \r | |
1387 | case EfiOpenMemoryBuffer:\r | |
1388 | CopyMem (Buffer, File->Buffer + File->CurrentPosition, *BufferSize);\r | |
1389 | File->CurrentPosition += *BufferSize;\r | |
1390 | Status = EFI_SUCCESS;\r | |
1391 | break;\r | |
1392 | \r | |
1393 | case EfiOpenFileSystem:\r | |
1394 | Status = File->FsFileHandle->Read (File->FsFileHandle, BufferSize, Buffer);\r | |
1395 | File->CurrentPosition += *BufferSize;\r | |
1396 | break;\r | |
1397 | \r | |
1398 | case EfiOpenBlockIo:\r | |
1399 | Status = gBS->HandleProtocol(File->EfiHandle, &gEfiDiskIoProtocolGuid, (VOID **)&DiskIo);\r | |
1400 | if (!EFI_ERROR(Status)) {\r | |
1401 | Status = DiskIo->ReadDisk(DiskIo, File->FsBlockIoMedia->MediaId, File->DiskOffset + File->CurrentPosition, *BufferSize, Buffer);\r | |
1402 | }\r | |
1403 | File->CurrentPosition += *BufferSize;\r | |
1404 | break;\r | |
1405 | \r | |
1406 | case EfiOpenTftp:\r | |
1407 | // Cache the file if it hasn't been cached yet.\r | |
1408 | if (File->IsBufferValid == FALSE) {\r | |
1409 | Status = CacheTftpFile (File);\r | |
1410 | if (EFI_ERROR (Status)) {\r | |
1411 | return Status;\r | |
1412 | }\r | |
1413 | }\r | |
1414 | \r | |
1415 | // Copy out the requested data\r | |
1416 | CopyMem (Buffer, File->Buffer + File->CurrentPosition, *BufferSize);\r | |
1417 | File->CurrentPosition += *BufferSize;\r | |
1418 | \r | |
1419 | Status = EFI_SUCCESS;\r | |
1420 | break;\r | |
1421 | \r | |
1422 | default:\r | |
1423 | return EFI_INVALID_PARAMETER;\r | |
1424 | };\r | |
1425 | \r | |
1426 | return Status;\r | |
1427 | }\r | |
1428 | \r | |
1429 | \r | |
1430 | /**\r | |
1431 | Read the entire file into a buffer. This routine allocates the buffer and\r | |
3402aac7 | 1432 | returns it to the user full of the read data.\r |
1e57a462 | 1433 | \r |
1434 | This is very useful for load file where it's hard to know how big the buffer\r | |
1435 | must be.\r | |
1436 | \r | |
1437 | @param Stream Open File Handle\r | |
3402aac7 | 1438 | @param Buffer Pointer to buffer to return.\r |
1e57a462 | 1439 | @param BufferSize Pointer to Size of buffer return..\r |
1440 | \r | |
1441 | \r | |
1442 | @return EFI_SUCCESS Stream is not an Open File\r | |
1443 | @return EFI_END_OF_FILE Tried to read past the end of the file\r | |
1444 | @return EFI_INVALID_PARAMETER Stream is not an open file handle\r | |
1445 | @return EFI_BUFFER_TOO_SMALL Buffer is not big enough to do the read\r | |
1446 | @return "other" Error returned from device read\r | |
1447 | \r | |
1448 | **/\r | |
1449 | EFI_STATUS\r | |
1450 | EfiReadAllocatePool (\r | |
1451 | IN EFI_OPEN_FILE *File,\r | |
1452 | OUT VOID **Buffer,\r | |
1453 | OUT UINTN *BufferSize\r | |
1454 | )\r | |
1455 | {\r | |
1456 | if (!FileHandleValid (File)) {\r | |
1457 | return EFI_INVALID_PARAMETER;\r | |
1458 | }\r | |
1459 | \r | |
1460 | // Loadfile defers file size determination on Open so use tell to find it\r | |
1461 | EfiTell (File, NULL);\r | |
1462 | \r | |
1463 | *BufferSize = File->Size;\r | |
1464 | *Buffer = AllocatePool (*BufferSize);\r | |
1465 | if (*Buffer == NULL) {\r | |
1466 | return EFI_NOT_FOUND;\r | |
1467 | }\r | |
1468 | \r | |
1469 | return EfiRead (File, *Buffer, BufferSize);\r | |
1470 | }\r | |
1471 | \r | |
1472 | \r | |
1473 | /**\r | |
3402aac7 | 1474 | Write data back to the file. For TFTP case you must write the entire file.\r |
1e57a462 | 1475 | \r |
1476 | @param Stream Open File Handle\r | |
3402aac7 | 1477 | @param Buffer Pointer to buffer to return.\r |
1e57a462 | 1478 | @param BufferSize Pointer to Size of buffer return..\r |
1479 | \r | |
1480 | \r | |
1481 | @return EFI_SUCCESS Stream is not an Open File\r | |
1482 | @return EFI_END_OF_FILE Tried to read past the end of the file\r | |
1483 | @return EFI_INVALID_PARAMETER Stream is not an open file handle\r | |
1484 | @return EFI_BUFFER_TOO_SMALL Buffer is not big enough to do the read\r | |
1485 | @return "other" Error returned from device write\r | |
1486 | \r | |
1487 | **/\r | |
1488 | EFI_STATUS\r | |
1489 | EfiWrite (\r | |
1490 | IN EFI_OPEN_FILE *File,\r | |
1491 | OUT VOID *Buffer,\r | |
1492 | OUT UINTN *BufferSize\r | |
1493 | )\r | |
1494 | {\r | |
1495 | EFI_STATUS Status;\r | |
1496 | EFI_FV_WRITE_FILE_DATA FileData;\r | |
3402aac7 | 1497 | EFI_DISK_IO_PROTOCOL *DiskIo;\r |
1e57a462 | 1498 | \r |
1499 | if (!FileHandleValid (File)) {\r | |
1500 | return EFI_INVALID_PARAMETER;\r | |
1501 | }\r | |
1502 | \r | |
1503 | switch (File->Type) {\r | |
1504 | case EfiOpenMemoryBuffer:\r | |
1505 | if ((File->CurrentPosition + *BufferSize) > File->MaxPosition) {\r | |
1506 | return EFI_END_OF_FILE;\r | |
1507 | }\r | |
1508 | \r | |
1509 | CopyMem (File->Buffer + File->CurrentPosition, Buffer, *BufferSize);\r | |
1510 | File->CurrentPosition += *BufferSize;\r | |
1511 | Status = EFI_SUCCESS;\r | |
1512 | \r | |
1513 | case EfiOpenLoadFile:\r | |
1514 | // LoadFile device is read only be definition\r | |
1515 | Status = EFI_UNSUPPORTED;\r | |
1516 | \r | |
1517 | case EfiOpenFirmwareVolume:\r | |
1518 | if (File->FvSectionType != EFI_SECTION_ALL) {\r | |
1519 | // Writes not support to a specific section. You have to update entire file\r | |
1520 | return EFI_UNSUPPORTED;\r | |
1521 | }\r | |
1522 | \r | |
1523 | FileData.NameGuid = &(File->FvNameGuid);\r | |
1524 | FileData.Type = File->FvType;\r | |
1525 | FileData.FileAttributes = File->FvAttributes;\r | |
1526 | FileData.Buffer = Buffer;\r | |
1527 | FileData.BufferSize = (UINT32)*BufferSize;\r | |
1528 | Status = File->Fv->WriteFile (File->Fv, 1, EFI_FV_UNRELIABLE_WRITE, &FileData);\r | |
1529 | break;\r | |
1530 | \r | |
1531 | case EfiOpenFileSystem:\r | |
1532 | Status = File->FsFileHandle->Write (File->FsFileHandle, BufferSize, Buffer);\r | |
1533 | File->CurrentPosition += *BufferSize;\r | |
1534 | break;\r | |
1535 | \r | |
1536 | case EfiOpenBlockIo:\r | |
1537 | if ((File->CurrentPosition + *BufferSize) > File->MaxPosition) {\r | |
1538 | return EFI_END_OF_FILE;\r | |
1539 | }\r | |
1540 | \r | |
1541 | Status = gBS->HandleProtocol (File->EfiHandle, &gEfiDiskIoProtocolGuid, (VOID **)&DiskIo);\r | |
1542 | if (!EFI_ERROR(Status)) {\r | |
1543 | Status = DiskIo->WriteDisk (DiskIo, File->FsBlockIoMedia->MediaId, File->DiskOffset + File->CurrentPosition, *BufferSize, Buffer);\r | |
1544 | }\r | |
1545 | File->CurrentPosition += *BufferSize;\r | |
1546 | break;\r | |
1547 | \r | |
1548 | case EfiOpenTftp:\r | |
1549 | // Cache the file if it hasn't been cached yet.\r | |
1550 | if (File->IsBufferValid == FALSE) {\r | |
1551 | Status = CacheTftpFile(File);\r | |
1552 | if (EFI_ERROR(Status)) {\r | |
1553 | return Status;\r | |
1554 | }\r | |
1555 | }\r | |
1556 | \r | |
1557 | // Don't overwrite the buffer\r | |
1558 | if ((File->CurrentPosition + *BufferSize) > File->MaxPosition) {\r | |
1559 | UINT8 *TempBuffer;\r | |
1560 | \r | |
1561 | TempBuffer = File->Buffer;\r | |
1562 | \r | |
1563 | File->Buffer = AllocatePool ((UINTN)(File->CurrentPosition + *BufferSize));\r | |
1564 | if (File->Buffer == NULL) {\r | |
1565 | return EFI_OUT_OF_RESOURCES;\r | |
1566 | }\r | |
1567 | \r | |
1568 | CopyMem (File->Buffer, TempBuffer, File->Size);\r | |
1569 | \r | |
1570 | FreePool (TempBuffer);\r | |
1571 | \r | |
1572 | File->Size = (UINTN)(File->CurrentPosition + *BufferSize);\r | |
1573 | File->MaxPosition = (UINT64)File->Size;\r | |
1574 | }\r | |
1575 | \r | |
1576 | // Copy in the requested data\r | |
1577 | CopyMem (File->Buffer + File->CurrentPosition, Buffer, *BufferSize);\r | |
1578 | File->CurrentPosition += *BufferSize;\r | |
1579 | \r | |
1580 | // Mark the file dirty\r | |
1581 | File->IsDirty = TRUE;\r | |
1582 | \r | |
1583 | Status = EFI_SUCCESS;\r | |
1584 | break;\r | |
1585 | \r | |
1586 | default:\r | |
1587 | Status = EFI_INVALID_PARAMETER;\r | |
1588 | };\r | |
1589 | \r | |
1590 | return Status;\r | |
1591 | }\r | |
1592 | \r | |
1593 | \r | |
1594 | /**\r | |
3402aac7 | 1595 | Given Cwd expand Path to remove .. and replace them with real\r |
1e57a462 | 1596 | directory names.\r |
1597 | \r | |
1598 | @param Cwd Current Working Directory\r | |
1599 | @param Path Path to expand\r | |
1600 | \r | |
1601 | @return NULL Cwd or Path are not valid\r | |
1602 | @return 'other' Path with .. expanded\r | |
1603 | \r | |
1604 | **/\r | |
1605 | CHAR8 *\r | |
1606 | ExpandPath (\r | |
1607 | IN CHAR8 *Cwd,\r | |
1608 | IN CHAR8 *Path\r | |
1609 | )\r | |
1610 | {\r | |
1611 | CHAR8 *NewPath;\r | |
1612 | CHAR8 *Work, *Start, *End;\r | |
1613 | UINTN StrLen;\r | |
1614 | INTN i;\r | |
1615 | \r | |
1616 | if (Cwd == NULL || Path == NULL) {\r | |
1617 | return NULL;\r | |
1618 | }\r | |
1619 | \r | |
1620 | StrLen = AsciiStrSize (Cwd);\r | |
1621 | if (StrLen <= 2) {\r | |
1622 | // Smallest valid path is 1 char and a null\r | |
1623 | return NULL;\r | |
1624 | }\r | |
1625 | \r | |
1626 | StrLen = AsciiStrSize (Path);\r | |
1627 | NewPath = AllocatePool (AsciiStrSize (Cwd) + StrLen + 1);\r | |
1628 | if (NewPath == NULL) {\r | |
1629 | return NULL;\r | |
1630 | }\r | |
1631 | AsciiStrCpy (NewPath, Cwd);\r | |
1632 | \r | |
1633 | End = Path + StrLen;\r | |
1634 | for (Start = Path ;;) {\r | |
1635 | Work = AsciiStrStr (Start, "..") ;\r | |
1636 | if (Work == NULL) {\r | |
1637 | // Remaining part of Path contains no more ..\r | |
1638 | break;\r | |
3402aac7 | 1639 | }\r |
1e57a462 | 1640 | \r |
3402aac7 | 1641 | // append path prior to ..\r |
1e57a462 | 1642 | AsciiStrnCat (NewPath, Start, Work - Start);\r |
1643 | StrLen = AsciiStrLen (NewPath);\r | |
1644 | for (i = StrLen; i >= 0; i--) {\r | |
1645 | if (NewPath[i] == ':') {\r | |
1646 | // too many ..\r | |
1647 | return NULL;\r | |
1648 | }\r | |
1649 | if (NewPath[i] == '/' || NewPath[i] == '\\') {\r | |
1650 | if ((i > 0) && (NewPath[i-1] == ':')) {\r | |
1651 | // leave the / before a :\r | |
1652 | NewPath[i+1] = '\0';\r | |
1653 | } else {\r | |
1654 | // replace / will Null to remove trailing file/dir reference\r | |
1655 | NewPath[i] = '\0';\r | |
1656 | }\r | |
1657 | break;\r | |
1658 | }\r | |
1659 | }\r | |
1660 | \r | |
1661 | Start = Work + 3;\r | |
3402aac7 | 1662 | }\r |
1e57a462 | 1663 | \r |
1664 | // Handle the path that remains after the ..\r | |
1665 | AsciiStrnCat (NewPath, Start, End - Start);\r | |
1666 | \r | |
1667 | return NewPath;\r | |
1668 | }\r | |
1669 | \r | |
1670 | \r | |
1671 | /**\r | |
1672 | Set the Current Working Directory (CWD). If a call is made to EfiOpen () and\r | |
1673 | the path does not contain a device name, The CWD is prepended to the path.\r | |
1674 | \r | |
1675 | @param Cwd Current Working Directory to set\r | |
1676 | \r | |
1677 | \r | |
1678 | @return EFI_SUCCESS CWD is set\r | |
1679 | @return EFI_INVALID_PARAMETER Cwd is not a valid device:path\r | |
1680 | \r | |
1681 | **/\r | |
1682 | EFI_STATUS\r | |
1683 | EfiSetCwd (\r | |
1684 | IN CHAR8 *Cwd\r | |
3402aac7 | 1685 | )\r |
1e57a462 | 1686 | {\r |
1687 | EFI_OPEN_FILE *File;\r | |
1688 | UINTN Len;\r | |
1689 | CHAR8 *Path;\r | |
1690 | \r | |
1691 | if (Cwd == NULL) {\r | |
1692 | return EFI_INVALID_PARAMETER;\r | |
1693 | }\r | |
1694 | \r | |
1695 | if (AsciiStrCmp (Cwd, ".") == 0) {\r | |
1696 | // cd . is a no-op\r | |
1697 | return EFI_SUCCESS;\r | |
1698 | }\r | |
1699 | \r | |
1700 | Path = Cwd;\r | |
1701 | if (AsciiStrStr (Cwd, "..") != NULL) {\r | |
1702 | if (gCwd == NULL) {\r | |
3402aac7 | 1703 | // no parent\r |
1e57a462 | 1704 | return EFI_SUCCESS;\r |
1705 | }\r | |
1706 | \r | |
1707 | Len = AsciiStrLen (gCwd);\r | |
1708 | if ((gCwd[Len-2] == ':') && ((gCwd[Len-1] == '/') || (gCwd[Len-1] == '\\'))) {\r | |
1709 | // parent is device so nothing to do\r | |
1710 | return EFI_SUCCESS;\r | |
1711 | }\r | |
1712 | \r | |
1713 | // Expand .. in Cwd, given we know current working directory\r | |
1714 | Path = ExpandPath (gCwd, Cwd);\r | |
1715 | if (Path == NULL) {\r | |
1716 | return EFI_NOT_FOUND;\r | |
1717 | }\r | |
1718 | }\r | |
1719 | \r | |
1720 | File = EfiOpen (Path, EFI_FILE_MODE_READ, 0);\r | |
1721 | if (File == NULL) {\r | |
1722 | return EFI_INVALID_PARAMETER;\r | |
1723 | }\r | |
1724 | \r | |
1725 | if (gCwd != NULL) {\r | |
1726 | FreePool (gCwd);\r | |
1727 | }\r | |
1728 | \r | |
1729 | // Use the info returned from EfiOpen as it can add in CWD if needed. So Cwd could be\r | |
1730 | // relative to the current gCwd or not.\r | |
1731 | gCwd = AllocatePool (AsciiStrSize (File->DeviceName) + AsciiStrSize (File->FileName) + 10);\r | |
1732 | if (gCwd == NULL) {\r | |
1733 | return EFI_INVALID_PARAMETER;\r | |
1734 | }\r | |
1735 | \r | |
1736 | AsciiStrCpy (gCwd, File->DeviceName);\r | |
1737 | if (File->FileName == NULL) {\r | |
1738 | AsciiStrCat (gCwd, ":\\");\r | |
1739 | } else {\r | |
1740 | AsciiStrCat (gCwd, ":");\r | |
1741 | AsciiStrCat (gCwd, File->FileName);\r | |
1742 | }\r | |
1743 | \r | |
1744 | \r | |
1745 | EfiClose (File);\r | |
1746 | if (Path != Cwd) {\r | |
1747 | FreePool (Path);\r | |
1748 | }\r | |
1749 | return EFI_SUCCESS;\r | |
1750 | }\r | |
1751 | \r | |
1752 | \r | |
1753 | /**\r | |
1754 | Set the Current Working Directory (CWD). If a call is made to EfiOpen () and\r | |
1755 | the path does not contain a device name, The CWD is prepended to the path.\r | |
1756 | The CWD buffer is only valid until a new call is made to EfiSetCwd(). After\r | |
3402aac7 | 1757 | a call to EfiSetCwd() it is not legal to use the pointer returned by\r |
1e57a462 | 1758 | this function.\r |
1759 | \r | |
3402aac7 | 1760 | @param Cwd Current Working Directory\r |
1e57a462 | 1761 | \r |
1762 | \r | |
1763 | @return "" No CWD set\r | |
1764 | @return 'other' Returns buffer that contains CWD.\r | |
1765 | \r | |
1766 | **/\r | |
1767 | CHAR8 *\r | |
1768 | EfiGetCwd (\r | |
1769 | VOID\r | |
1770 | )\r | |
1771 | {\r | |
1772 | if (gCwd == NULL) {\r | |
1773 | return "";\r | |
1774 | }\r | |
1775 | return gCwd;\r | |
1776 | }\r | |
1777 | \r | |
1778 | \r |