]>
Commit | Line | Data |
---|---|---|
9da91aea BJ |
1 | /** @file\r |
2 | This driver uses the EFI_FIRMWARE_VOLUME2_PROTOCOL to expose files in firmware\r | |
3 | volumes via the the EFI_SIMPLE_FILESYSTEM_PROTOCOL and EFI_FILE_PROTOCOL.\r | |
4 | \r | |
5 | It will expose a single directory, containing one file for each file in the firmware\r | |
6 | volume. If a file has a UI section, its contents will be used as a filename.\r | |
7 | Otherwise, a string representation of the GUID will be used.\r | |
8 | Files of an executable type (That is PEIM, DRIVER, COMBINED_PEIM_DRIVER and APPLICATION)\r | |
9 | will have ".efi" added to their filename.\r | |
10 | \r | |
11 | Its primary intended use is to be able to start EFI applications embedded in FVs\r | |
12 | from the UEFI shell. It is entirely read-only.\r | |
13 | \r | |
14 | Copyright (c) 2014, ARM Limited. All rights reserved.\r | |
d1102dba | 15 | Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>\r |
9da91aea | 16 | \r |
9d510e61 | 17 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
9da91aea BJ |
18 | \r |
19 | **/\r | |
20 | \r | |
21 | #include "FvSimpleFileSystemInternal.h"\r | |
22 | \r | |
23 | //\r | |
24 | // Template for EFI_FILE_SYSTEM_INFO data structure.\r | |
25 | //\r | |
1436aea4 | 26 | EFI_FILE_SYSTEM_INFO mFsInfoTemplate = {\r |
9da91aea BJ |
27 | 0, // Populate at runtime\r |
28 | TRUE, // Read-only\r | |
29 | 0, // Don't know volume size\r | |
30 | 0, // No free space\r | |
31 | 0, // Don't know block size\r | |
32 | L"" // Populate at runtime\r | |
33 | };\r | |
34 | \r | |
35 | //\r | |
36 | // Template for EFI_FILE_PROTOCOL data structure.\r | |
37 | //\r | |
1436aea4 | 38 | EFI_FILE_PROTOCOL mFileSystemTemplate = {\r |
9da91aea BJ |
39 | EFI_FILE_PROTOCOL_REVISION,\r |
40 | FvSimpleFileSystemOpen,\r | |
41 | FvSimpleFileSystemClose,\r | |
42 | FvSimpleFileSystemDelete,\r | |
43 | FvSimpleFileSystemRead,\r | |
44 | FvSimpleFileSystemWrite,\r | |
45 | FvSimpleFileSystemGetPosition,\r | |
46 | FvSimpleFileSystemSetPosition,\r | |
47 | FvSimpleFileSystemGetInfo,\r | |
48 | FvSimpleFileSystemSetInfo,\r | |
49 | FvSimpleFileSystemFlush\r | |
50 | };\r | |
51 | \r | |
52 | /**\r | |
53 | Find and call ReadSection on the first section found of an executable type.\r | |
54 | \r | |
55 | @param FvProtocol A pointer to the EFI_FIRMWARE_VOLUME2_PROTOCOL instance.\r | |
56 | @param FvFileInfo A pointer to the FV_FILESYSTEM_FILE_INFO instance that is a struct\r | |
57 | representing a file's info.\r | |
58 | @param BufferSize Pointer to a caller-allocated UINTN. It indicates the size of\r | |
59 | the memory represented by *Buffer.\r | |
60 | @param Buffer Pointer to a pointer to a data buffer to contain file content.\r | |
61 | \r | |
62 | @retval EFI_SUCCESS The call completed successfully.\r | |
63 | @retval EFI_WARN_BUFFER_TOO_SMALL The buffer is too small to contain the requested output.\r | |
64 | @retval EFI_ACCESS_DENIED The firmware volume is configured to disallow reads.\r | |
65 | @retval EFI_NOT_FOUND The requested file was not found in the firmware volume.\r | |
66 | @retval EFI_DEVICE_ERROR A hardware error occurred when attempting toaccess the firmware volume.\r | |
67 | \r | |
68 | **/\r | |
69 | EFI_STATUS\r | |
70 | FvFsFindExecutableSection (\r | |
1436aea4 MK |
71 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol,\r |
72 | IN FV_FILESYSTEM_FILE_INFO *FvFileInfo,\r | |
73 | IN OUT UINTN *BufferSize,\r | |
74 | IN OUT VOID **Buffer\r | |
9da91aea BJ |
75 | )\r |
76 | {\r | |
1436aea4 MK |
77 | EFI_SECTION_TYPE SectionType;\r |
78 | UINT32 AuthenticationStatus;\r | |
79 | EFI_STATUS Status;\r | |
9da91aea BJ |
80 | \r |
81 | for (SectionType = EFI_SECTION_PE32; SectionType <= EFI_SECTION_TE; SectionType++) {\r | |
82 | Status = FvProtocol->ReadSection (\r | |
83 | FvProtocol,\r | |
84 | &FvFileInfo->NameGuid,\r | |
85 | SectionType,\r | |
86 | 0,\r | |
87 | Buffer,\r | |
88 | BufferSize,\r | |
89 | &AuthenticationStatus\r | |
90 | );\r | |
91 | if (Status != EFI_NOT_FOUND) {\r | |
92 | return Status;\r | |
93 | }\r | |
94 | }\r | |
95 | \r | |
96 | return EFI_NOT_FOUND;\r | |
97 | }\r | |
98 | \r | |
99 | /**\r | |
100 | Get the size of the buffer that will be returned by FvFsReadFile.\r | |
101 | \r | |
102 | @param FvProtocol A pointer to the EFI_FIRMWARE_VOLUME2_PROTOCOL instance.\r | |
103 | @param FvFileInfo A pointer to the FV_FILESYSTEM_FILE_INFO instance that is a struct\r | |
104 | representing a file's info.\r | |
105 | \r | |
106 | @retval EFI_SUCCESS The file size was gotten correctly.\r | |
107 | @retval Others The file size wasn't gotten correctly.\r | |
108 | \r | |
109 | **/\r | |
110 | EFI_STATUS\r | |
111 | FvFsGetFileSize (\r | |
1436aea4 MK |
112 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol,\r |
113 | IN OUT FV_FILESYSTEM_FILE_INFO *FvFileInfo\r | |
9da91aea BJ |
114 | )\r |
115 | {\r | |
1436aea4 MK |
116 | UINT32 AuthenticationStatus;\r |
117 | EFI_FV_FILETYPE FoundType;\r | |
118 | EFI_FV_FILE_ATTRIBUTES Attributes;\r | |
119 | EFI_STATUS Status;\r | |
120 | UINT8 IgnoredByte;\r | |
121 | VOID *IgnoredPtr;\r | |
9da91aea BJ |
122 | \r |
123 | //\r | |
124 | // To get the size of a section, we pass 0 for BufferSize. But we can't pass\r | |
125 | // NULL for Buffer, as that will cause a return of INVALID_PARAMETER, and we\r | |
126 | // can't pass NULL for *Buffer, as that will cause the callee to allocate\r | |
127 | // a buffer of the sections size.\r | |
128 | //\r | |
1436aea4 | 129 | IgnoredPtr = &IgnoredByte;\r |
9da91aea BJ |
130 | FvFileInfo->FileInfo.FileSize = 0;\r |
131 | \r | |
132 | if (FV_FILETYPE_IS_EXECUTABLE (FvFileInfo->Type)) {\r | |
133 | //\r | |
134 | // Get the size of the first executable section out of the file.\r | |
135 | //\r | |
1436aea4 | 136 | Status = FvFsFindExecutableSection (FvProtocol, FvFileInfo, (UINTN *)&FvFileInfo->FileInfo.FileSize, &IgnoredPtr);\r |
9da91aea BJ |
137 | if (Status == EFI_WARN_BUFFER_TOO_SMALL) {\r |
138 | return EFI_SUCCESS;\r | |
139 | }\r | |
140 | } else if (FvFileInfo->Type == EFI_FV_FILETYPE_FREEFORM) {\r | |
141 | //\r | |
142 | // Try to get the size of a raw section out of the file\r | |
143 | //\r | |
144 | Status = FvProtocol->ReadSection (\r | |
145 | FvProtocol,\r | |
146 | &FvFileInfo->NameGuid,\r | |
147 | EFI_SECTION_RAW,\r | |
148 | 0,\r | |
149 | &IgnoredPtr,\r | |
1436aea4 | 150 | (UINTN *)&FvFileInfo->FileInfo.FileSize,\r |
9da91aea BJ |
151 | &AuthenticationStatus\r |
152 | );\r | |
153 | if (Status == EFI_WARN_BUFFER_TOO_SMALL) {\r | |
154 | return EFI_SUCCESS;\r | |
155 | }\r | |
1436aea4 | 156 | \r |
9da91aea BJ |
157 | if (EFI_ERROR (Status)) {\r |
158 | //\r | |
159 | // Didn't find a raw section, just return the whole file's size.\r | |
160 | //\r | |
161 | return FvProtocol->ReadFile (\r | |
162 | FvProtocol,\r | |
163 | &FvFileInfo->NameGuid,\r | |
164 | NULL,\r | |
1436aea4 | 165 | (UINTN *)&FvFileInfo->FileInfo.FileSize,\r |
9da91aea BJ |
166 | &FoundType,\r |
167 | &Attributes,\r | |
168 | &AuthenticationStatus\r | |
169 | );\r | |
170 | }\r | |
171 | } else {\r | |
172 | //\r | |
173 | // Get the size of the entire file\r | |
174 | //\r | |
175 | return FvProtocol->ReadFile (\r | |
176 | FvProtocol,\r | |
177 | &FvFileInfo->NameGuid,\r | |
178 | NULL,\r | |
1436aea4 | 179 | (UINTN *)&FvFileInfo->FileInfo.FileSize,\r |
9da91aea BJ |
180 | &FoundType,\r |
181 | &Attributes,\r | |
182 | &AuthenticationStatus\r | |
183 | );\r | |
184 | }\r | |
185 | \r | |
186 | return Status;\r | |
187 | }\r | |
188 | \r | |
189 | /**\r | |
190 | Helper function to read a file.\r | |
191 | \r | |
192 | The data returned depends on the type of the underlying FV file:\r | |
193 | - For executable types, the first section found that contains executable code is returned.\r | |
194 | - For files of type FREEFORM, the driver attempts to return the first section of type RAW.\r | |
195 | If none is found, the entire contents of the FV file are returned.\r | |
196 | - On all other files the entire contents of the FV file is returned, as by\r | |
197 | EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadFile.\r | |
198 | \r | |
199 | @param FvProtocol A pointer to the EFI_FIRMWARE_VOLUME2_PROTOCOL instance.\r | |
200 | @param FvFileInfo A pointer to the FV_FILESYSTEM_FILE_INFO instance that is a struct\r | |
201 | representing a file's info.\r | |
202 | @param BufferSize Pointer to a caller-allocated UINTN. It indicates the size of\r | |
203 | the memory represented by *Buffer.\r | |
204 | @param Buffer Pointer to a pointer to a data buffer to contain file content.\r | |
205 | \r | |
206 | @retval EFI_SUCCESS The call completed successfully.\r | |
207 | @retval EFI_WARN_BUFFER_TOO_SMALL The buffer is too small to contain the requested output.\r | |
208 | @retval EFI_ACCESS_DENIED The firmware volume is configured to disallow reads.\r | |
209 | @retval EFI_NOT_FOUND The requested file was not found in the firmware volume.\r | |
210 | @retval EFI_DEVICE_ERROR A hardware error occurred when attempting toaccess the firmware volume.\r | |
211 | \r | |
212 | **/\r | |
213 | EFI_STATUS\r | |
214 | FvFsReadFile (\r | |
1436aea4 MK |
215 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol,\r |
216 | IN FV_FILESYSTEM_FILE_INFO *FvFileInfo,\r | |
217 | IN OUT UINTN *BufferSize,\r | |
218 | IN OUT VOID **Buffer\r | |
9da91aea BJ |
219 | )\r |
220 | {\r | |
1436aea4 MK |
221 | UINT32 AuthenticationStatus;\r |
222 | EFI_FV_FILETYPE FoundType;\r | |
223 | EFI_FV_FILE_ATTRIBUTES Attributes;\r | |
224 | EFI_STATUS Status;\r | |
9da91aea BJ |
225 | \r |
226 | if (FV_FILETYPE_IS_EXECUTABLE (FvFileInfo->Type)) {\r | |
227 | //\r | |
228 | // Read the first executable section out of the file.\r | |
229 | //\r | |
230 | Status = FvFsFindExecutableSection (FvProtocol, FvFileInfo, BufferSize, Buffer);\r | |
231 | } else if (FvFileInfo->Type == EFI_FV_FILETYPE_FREEFORM) {\r | |
232 | //\r | |
233 | // Try to read a raw section out of the file\r | |
234 | //\r | |
235 | Status = FvProtocol->ReadSection (\r | |
236 | FvProtocol,\r | |
237 | &FvFileInfo->NameGuid,\r | |
238 | EFI_SECTION_RAW,\r | |
239 | 0,\r | |
240 | Buffer,\r | |
241 | BufferSize,\r | |
242 | &AuthenticationStatus\r | |
243 | );\r | |
244 | if (EFI_ERROR (Status)) {\r | |
245 | //\r | |
246 | // Didn't find a raw section, just return the whole file.\r | |
247 | //\r | |
248 | Status = FvProtocol->ReadFile (\r | |
249 | FvProtocol,\r | |
250 | &FvFileInfo->NameGuid,\r | |
251 | Buffer,\r | |
252 | BufferSize,\r | |
253 | &FoundType,\r | |
254 | &Attributes,\r | |
255 | &AuthenticationStatus\r | |
256 | );\r | |
257 | }\r | |
258 | } else {\r | |
259 | //\r | |
260 | // Read the entire file\r | |
261 | //\r | |
262 | Status = FvProtocol->ReadFile (\r | |
263 | FvProtocol,\r | |
264 | &FvFileInfo->NameGuid,\r | |
265 | Buffer,\r | |
266 | BufferSize,\r | |
267 | &FoundType,\r | |
268 | &Attributes,\r | |
269 | &AuthenticationStatus\r | |
270 | );\r | |
271 | }\r | |
272 | \r | |
273 | return Status;\r | |
274 | }\r | |
275 | \r | |
276 | /**\r | |
277 | Helper function for populating an EFI_FILE_INFO for a file.\r | |
278 | \r | |
279 | Note the CreateTime, LastAccessTime and ModificationTime fields in EFI_FILE_INFO\r | |
280 | are full zero as FV2 protocol has no corresponding info to fill.\r | |
281 | \r | |
282 | @param FvFileInfo A pointer to the FV_FILESYSTEM_FILE_INFO instance that is a struct\r | |
283 | representing a file's info.\r | |
284 | @param BufferSize Pointer to a caller-allocated UINTN. It indicates the size of\r | |
285 | the memory represented by FileInfo.\r | |
286 | @param FileInfo A pointer to EFI_FILE_INFO to contain the returned file info.\r | |
287 | \r | |
288 | @retval EFI_SUCCESS The call completed successfully.\r | |
289 | @retval EFI_BUFFER_TOO_SMALL The buffer is too small to contain the requested output.\r | |
290 | \r | |
291 | **/\r | |
292 | EFI_STATUS\r | |
293 | FvFsGetFileInfo (\r | |
1436aea4 MK |
294 | IN FV_FILESYSTEM_FILE_INFO *FvFileInfo,\r |
295 | IN OUT UINTN *BufferSize,\r | |
296 | OUT EFI_FILE_INFO *FileInfo\r | |
9da91aea BJ |
297 | )\r |
298 | {\r | |
1436aea4 | 299 | UINTN InfoSize;\r |
9da91aea | 300 | \r |
270fc03f | 301 | InfoSize = (UINTN)FvFileInfo->FileInfo.Size;\r |
9da91aea BJ |
302 | if (*BufferSize < InfoSize) {\r |
303 | *BufferSize = InfoSize;\r | |
304 | return EFI_BUFFER_TOO_SMALL;\r | |
305 | }\r | |
306 | \r | |
307 | //\r | |
308 | // Initialize FileInfo\r | |
309 | //\r | |
310 | CopyMem (FileInfo, &FvFileInfo->FileInfo, InfoSize);\r | |
311 | \r | |
312 | *BufferSize = InfoSize;\r | |
313 | return EFI_SUCCESS;\r | |
314 | }\r | |
315 | \r | |
316 | /**\r | |
317 | Removes the last directory or file entry in a path by changing the last\r | |
318 | L'\' to a CHAR_NULL.\r | |
319 | \r | |
320 | @param Path The pointer to the path to modify.\r | |
321 | \r | |
322 | @retval FALSE Nothing was found to remove.\r | |
323 | @retval TRUE A directory or file was removed.\r | |
324 | \r | |
325 | **/\r | |
326 | BOOLEAN\r | |
327 | EFIAPI\r | |
328 | RemoveLastItemFromPath (\r | |
1436aea4 | 329 | IN OUT CHAR16 *Path\r |
9da91aea BJ |
330 | )\r |
331 | {\r | |
1436aea4 MK |
332 | CHAR16 *Walker;\r |
333 | CHAR16 *LastSlash;\r | |
334 | \r | |
9da91aea BJ |
335 | //\r |
336 | // get directory name from path... ('chop' off extra)\r | |
337 | //\r | |
338 | for ( Walker = Path, LastSlash = NULL\r | |
1436aea4 MK |
339 | ; Walker != NULL && *Walker != CHAR_NULL\r |
340 | ; Walker++\r | |
341 | )\r | |
342 | {\r | |
343 | if ((*Walker == L'\\') && (*(Walker + 1) != CHAR_NULL)) {\r | |
9da91aea BJ |
344 | LastSlash = Walker + 1;\r |
345 | }\r | |
346 | }\r | |
347 | \r | |
348 | if (LastSlash != NULL) {\r | |
349 | *LastSlash = CHAR_NULL;\r | |
350 | return (TRUE);\r | |
351 | }\r | |
352 | \r | |
353 | return (FALSE);\r | |
354 | }\r | |
355 | \r | |
356 | /**\r | |
357 | Function to clean up paths.\r | |
358 | \r | |
359 | - Single periods in the path are removed.\r | |
360 | - Double periods in the path are removed along with a single parent directory.\r | |
361 | - Forward slashes L'/' are converted to backward slashes L'\'.\r | |
362 | \r | |
363 | This will be done inline and the existing buffer may be larger than required\r | |
364 | upon completion.\r | |
365 | \r | |
366 | @param Path The pointer to the string containing the path.\r | |
367 | \r | |
d181539b | 368 | @retval NULL An error occurred.\r |
9da91aea BJ |
369 | @return Path in all other instances.\r |
370 | \r | |
371 | **/\r | |
1436aea4 | 372 | CHAR16 *\r |
9da91aea BJ |
373 | EFIAPI\r |
374 | TrimFilePathToAbsolutePath (\r | |
1436aea4 | 375 | IN CHAR16 *Path\r |
9da91aea BJ |
376 | )\r |
377 | {\r | |
378 | CHAR16 *TempString;\r | |
379 | UINTN TempSize;\r | |
380 | \r | |
381 | if (Path == NULL) {\r | |
382 | return NULL;\r | |
383 | }\r | |
384 | \r | |
385 | //\r | |
386 | // Fix up the '/' vs '\'\r | |
387 | //\r | |
1436aea4 | 388 | for (TempString = Path; (TempString != NULL) && (*TempString != CHAR_NULL); TempString++) {\r |
9da91aea BJ |
389 | if (*TempString == L'/') {\r |
390 | *TempString = L'\\';\r | |
391 | }\r | |
392 | }\r | |
393 | \r | |
394 | //\r | |
395 | // Fix up the ..\r | |
396 | //\r | |
397 | while ((TempString = StrStr (Path, L"\\..\\")) != NULL) {\r | |
1436aea4 MK |
398 | *TempString = CHAR_NULL;\r |
399 | TempString += 4;\r | |
9da91aea | 400 | RemoveLastItemFromPath (Path);\r |
1436aea4 | 401 | TempSize = StrSize (TempString);\r |
9da91aea BJ |
402 | CopyMem (Path + StrLen (Path), TempString, TempSize);\r |
403 | }\r | |
404 | \r | |
405 | if (((TempString = StrStr (Path, L"\\..")) != NULL) && (*(TempString + 3) == CHAR_NULL)) {\r | |
1436aea4 | 406 | *TempString = CHAR_NULL;\r |
9da91aea BJ |
407 | RemoveLastItemFromPath (Path);\r |
408 | }\r | |
409 | \r | |
410 | //\r | |
411 | // Fix up the .\r | |
412 | //\r | |
413 | while ((TempString = StrStr (Path, L"\\.\\")) != NULL) {\r | |
1436aea4 MK |
414 | *TempString = CHAR_NULL;\r |
415 | TempString += 2;\r | |
416 | TempSize = StrSize (TempString);\r | |
417 | CopyMem (Path + StrLen (Path), TempString, TempSize);\r | |
9da91aea BJ |
418 | }\r |
419 | \r | |
420 | if (((TempString = StrStr (Path, L"\\.")) != NULL) && (*(TempString + 2) == CHAR_NULL)) {\r | |
421 | *(TempString + 1) = CHAR_NULL;\r | |
422 | }\r | |
423 | \r | |
424 | while ((TempString = StrStr (Path, L"\\\\")) != NULL) {\r | |
1436aea4 MK |
425 | *TempString = CHAR_NULL;\r |
426 | TempString += 1;\r | |
427 | TempSize = StrSize (TempString);\r | |
428 | CopyMem (Path + StrLen (Path), TempString, TempSize);\r | |
9da91aea BJ |
429 | }\r |
430 | \r | |
1436aea4 | 431 | if (((TempString = StrStr (Path, L"\\\\")) != NULL) && (*(TempString + 1) == CHAR_NULL)) {\r |
9da91aea BJ |
432 | *(TempString) = CHAR_NULL;\r |
433 | }\r | |
434 | \r | |
435 | return Path;\r | |
436 | }\r | |
437 | \r | |
438 | /**\r | |
439 | Opens a new file relative to the source file's location.\r | |
440 | \r | |
441 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the file\r | |
442 | handle to the source location. This would typically be an open\r | |
443 | handle to a directory.\r | |
444 | @param NewHandle A pointer to the location to return the opened handle for the new\r | |
445 | file.\r | |
446 | @param FileName The Null-terminated string of the name of the file to be opened.\r | |
447 | The file name may contain the following path modifiers: "\", ".",\r | |
448 | and "..".\r | |
449 | @param OpenMode The mode to open the file. The only valid combinations that the\r | |
450 | file may be opened with are: Read, Read/Write, or Create/Read/Write.\r | |
451 | @param Attributes Only valid for EFI_FILE_MODE_CREATE, in which case these are the\r | |
452 | attribute bits for the newly created file.\r | |
453 | \r | |
454 | @retval EFI_SUCCESS The file was opened.\r | |
455 | @retval EFI_NOT_FOUND The specified file could not be found on the device.\r | |
456 | @retval EFI_NO_MEDIA The device has no medium.\r | |
457 | @retval EFI_MEDIA_CHANGED The device has a different medium in it or the medium is no\r | |
458 | longer supported.\r | |
459 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
460 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
461 | @retval EFI_WRITE_PROTECTED An attempt was made to create a file, or open a file for write\r | |
462 | when the media is write-protected.\r | |
463 | @retval EFI_ACCESS_DENIED The service denied access to the file.\r | |
464 | @retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the file.\r | |
465 | @retval EFI_VOLUME_FULL The volume is full.\r | |
466 | \r | |
467 | **/\r | |
468 | EFI_STATUS\r | |
469 | EFIAPI\r | |
470 | FvSimpleFileSystemOpen (\r | |
1436aea4 MK |
471 | IN EFI_FILE_PROTOCOL *This,\r |
472 | OUT EFI_FILE_PROTOCOL **NewHandle,\r | |
473 | IN CHAR16 *FileName,\r | |
474 | IN UINT64 OpenMode,\r | |
475 | IN UINT64 Attributes\r | |
9da91aea BJ |
476 | )\r |
477 | {\r | |
1436aea4 MK |
478 | FV_FILESYSTEM_INSTANCE *Instance;\r |
479 | FV_FILESYSTEM_FILE *File;\r | |
480 | FV_FILESYSTEM_FILE *NewFile;\r | |
481 | FV_FILESYSTEM_FILE_INFO *FvFileInfo;\r | |
482 | LIST_ENTRY *FvFileInfoLink;\r | |
483 | EFI_STATUS Status;\r | |
484 | UINTN FileNameLength;\r | |
485 | UINTN NewFileNameLength;\r | |
486 | CHAR16 *FileNameWithExtension;\r | |
9da91aea BJ |
487 | \r |
488 | //\r | |
489 | // Check for a valid mode\r | |
490 | //\r | |
491 | switch (OpenMode) {\r | |
1436aea4 MK |
492 | case EFI_FILE_MODE_READ:\r |
493 | break;\r | |
9da91aea | 494 | \r |
1436aea4 MK |
495 | default:\r |
496 | return EFI_WRITE_PROTECTED;\r | |
9da91aea BJ |
497 | }\r |
498 | \r | |
1436aea4 | 499 | File = FVFS_FILE_FROM_FILE_THIS (This);\r |
9da91aea BJ |
500 | Instance = File->Instance;\r |
501 | \r | |
502 | FileName = TrimFilePathToAbsolutePath (FileName);\r | |
5a2dcd13 FT |
503 | if (FileName == NULL) {\r |
504 | return EFI_INVALID_PARAMETER;\r | |
505 | }\r | |
9da91aea BJ |
506 | \r |
507 | if (FileName[0] == L'\\') {\r | |
508 | FileName++;\r | |
509 | }\r | |
510 | \r | |
511 | //\r | |
512 | // Check for opening root\r | |
513 | //\r | |
1436aea4 | 514 | if ((StrCmp (FileName, L".") == 0) || (StrCmp (FileName, L"") == 0)) {\r |
9da91aea BJ |
515 | NewFile = AllocateZeroPool (sizeof (FV_FILESYSTEM_FILE));\r |
516 | if (NewFile == NULL) {\r | |
517 | return EFI_OUT_OF_RESOURCES;\r | |
518 | }\r | |
1436aea4 MK |
519 | \r |
520 | NewFile->Signature = FVFS_FILE_SIGNATURE;\r | |
521 | NewFile->Instance = Instance;\r | |
9da91aea BJ |
522 | NewFile->FvFileInfo = File->FvFileInfo;\r |
523 | CopyMem (&NewFile->FileProtocol, &mFileSystemTemplate, sizeof (mFileSystemTemplate));\r | |
524 | InitializeListHead (&NewFile->Link);\r | |
525 | InsertHeadList (&Instance->FileHead, &NewFile->Link);\r | |
526 | \r | |
ebd2be68 FT |
527 | NewFile->DirReadNext = NULL;\r |
528 | if (!IsListEmpty (&Instance->FileInfoHead)) {\r | |
529 | NewFile->DirReadNext = FVFS_GET_FIRST_FILE_INFO (Instance);\r | |
530 | }\r | |
9da91aea BJ |
531 | \r |
532 | *NewHandle = &NewFile->FileProtocol;\r | |
533 | return EFI_SUCCESS;\r | |
534 | }\r | |
535 | \r | |
536 | //\r | |
537 | // Do a linear search for a file in the FV with a matching filename\r | |
538 | //\r | |
1ca40fa9 OM |
539 | Status = EFI_NOT_FOUND;\r |
540 | FvFileInfo = NULL;\r | |
9da91aea | 541 | for (FvFileInfoLink = GetFirstNode (&Instance->FileInfoHead);\r |
1436aea4 MK |
542 | !IsNull (&Instance->FileInfoHead, FvFileInfoLink);\r |
543 | FvFileInfoLink = GetNextNode (&Instance->FileInfoHead, FvFileInfoLink))\r | |
544 | {\r | |
9da91aea BJ |
545 | FvFileInfo = FVFS_FILE_INFO_FROM_LINK (FvFileInfoLink);\r |
546 | if (mUnicodeCollation->StriColl (mUnicodeCollation, &FvFileInfo->FileInfo.FileName[0], FileName) == 0) {\r | |
1ca40fa9 OM |
547 | Status = EFI_SUCCESS;\r |
548 | break;\r | |
549 | }\r | |
550 | }\r | |
9da91aea | 551 | \r |
1ca40fa9 OM |
552 | // If the file has not been found check if the filename exists with an extension\r |
553 | // in case there was no extension present.\r | |
554 | // FvFileSystem adds a 'virtual' extension '.EFI' to EFI applications and drivers\r | |
555 | // present in the Firmware Volume\r | |
556 | if (Status == EFI_NOT_FOUND) {\r | |
557 | FileNameLength = StrLen (FileName);\r | |
558 | \r | |
559 | // Does the filename already contain the '.EFI' extension?\r | |
560 | if (mUnicodeCollation->StriColl (mUnicodeCollation, FileName + FileNameLength - 4, L".efi") != 0) {\r | |
561 | // No, there was no extension. So add one and search again for the file\r | |
562 | // NewFileNameLength = FileNameLength + 1 + 4 = (Number of non-null character) + (file extension) + (a null character)\r | |
1436aea4 | 563 | NewFileNameLength = FileNameLength + 1 + 4;\r |
469293f8 JW |
564 | FileNameWithExtension = AllocatePool (NewFileNameLength * 2);\r |
565 | StrCpyS (FileNameWithExtension, NewFileNameLength, FileName);\r | |
1ca40fa9 OM |
566 | StrCatS (FileNameWithExtension, NewFileNameLength, L".EFI");\r |
567 | \r | |
568 | for (FvFileInfoLink = GetFirstNode (&Instance->FileInfoHead);\r | |
1436aea4 MK |
569 | !IsNull (&Instance->FileInfoHead, FvFileInfoLink);\r |
570 | FvFileInfoLink = GetNextNode (&Instance->FileInfoHead, FvFileInfoLink))\r | |
571 | {\r | |
1ca40fa9 OM |
572 | FvFileInfo = FVFS_FILE_INFO_FROM_LINK (FvFileInfoLink);\r |
573 | if (mUnicodeCollation->StriColl (mUnicodeCollation, &FvFileInfo->FileInfo.FileName[0], FileNameWithExtension) == 0) {\r | |
574 | Status = EFI_SUCCESS;\r | |
575 | break;\r | |
576 | }\r | |
577 | }\r | |
578 | }\r | |
579 | }\r | |
9da91aea | 580 | \r |
1ca40fa9 OM |
581 | if (!EFI_ERROR (Status)) {\r |
582 | NewFile = AllocateZeroPool (sizeof (FV_FILESYSTEM_FILE));\r | |
583 | if (NewFile == NULL) {\r | |
584 | return EFI_OUT_OF_RESOURCES;\r | |
9da91aea | 585 | }\r |
1ca40fa9 | 586 | \r |
1436aea4 MK |
587 | NewFile->Signature = FVFS_FILE_SIGNATURE;\r |
588 | NewFile->Instance = Instance;\r | |
1ca40fa9 OM |
589 | NewFile->FvFileInfo = FvFileInfo;\r |
590 | CopyMem (&NewFile->FileProtocol, &mFileSystemTemplate, sizeof (mFileSystemTemplate));\r | |
591 | InitializeListHead (&NewFile->Link);\r | |
592 | InsertHeadList (&Instance->FileHead, &NewFile->Link);\r | |
593 | \r | |
594 | *NewHandle = &NewFile->FileProtocol;\r | |
595 | return EFI_SUCCESS;\r | |
9da91aea BJ |
596 | }\r |
597 | \r | |
598 | return EFI_NOT_FOUND;\r | |
599 | }\r | |
600 | \r | |
601 | /**\r | |
602 | Closes a specified file handle.\r | |
603 | \r | |
604 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the file\r | |
605 | handle to close.\r | |
606 | \r | |
607 | @retval EFI_SUCCESS The file was closed.\r | |
608 | \r | |
609 | **/\r | |
610 | EFI_STATUS\r | |
611 | EFIAPI\r | |
612 | FvSimpleFileSystemClose (\r | |
613 | IN EFI_FILE_PROTOCOL *This\r | |
614 | )\r | |
615 | {\r | |
1436aea4 MK |
616 | FV_FILESYSTEM_INSTANCE *Instance;\r |
617 | FV_FILESYSTEM_FILE *File;\r | |
9da91aea | 618 | \r |
1436aea4 | 619 | File = FVFS_FILE_FROM_FILE_THIS (This);\r |
9da91aea BJ |
620 | Instance = File->Instance;\r |
621 | \r | |
622 | if (File != Instance->Root) {\r | |
623 | RemoveEntryList (&File->Link);\r | |
624 | FreePool (File);\r | |
625 | }\r | |
1436aea4 | 626 | \r |
9da91aea BJ |
627 | return EFI_SUCCESS;\r |
628 | }\r | |
629 | \r | |
630 | /**\r | |
631 | Reads data from a file.\r | |
632 | \r | |
633 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the file\r | |
634 | handle to read data from.\r | |
635 | @param BufferSize On input, the size of the Buffer. On output, the amount of data\r | |
636 | returned in Buffer. In both cases, the size is measured in bytes.\r | |
637 | @param Buffer The buffer into which the data is read.\r | |
638 | \r | |
639 | @retval EFI_SUCCESS Data was read.\r | |
640 | @retval EFI_NO_MEDIA The device has no medium.\r | |
641 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
642 | @retval EFI_DEVICE_ERROR An attempt was made to read from a deleted file.\r | |
643 | @retval EFI_DEVICE_ERROR On entry, the current file position is beyond the end of the file.\r | |
644 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
645 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory\r | |
646 | entry. BufferSize has been updated with the size\r | |
647 | needed to complete the request.\r | |
648 | \r | |
649 | **/\r | |
650 | EFI_STATUS\r | |
651 | EFIAPI\r | |
652 | FvSimpleFileSystemRead (\r | |
1436aea4 MK |
653 | IN EFI_FILE_PROTOCOL *This,\r |
654 | IN OUT UINTN *BufferSize,\r | |
655 | OUT VOID *Buffer\r | |
9da91aea BJ |
656 | )\r |
657 | {\r | |
1436aea4 MK |
658 | FV_FILESYSTEM_INSTANCE *Instance;\r |
659 | FV_FILESYSTEM_FILE *File;\r | |
660 | EFI_STATUS Status;\r | |
661 | LIST_ENTRY *FvFileInfoLink;\r | |
662 | VOID *FileBuffer;\r | |
663 | UINTN FileSize;\r | |
664 | \r | |
665 | File = FVFS_FILE_FROM_FILE_THIS (This);\r | |
9da91aea BJ |
666 | Instance = File->Instance;\r |
667 | \r | |
668 | if (File->FvFileInfo == Instance->Root->FvFileInfo) {\r | |
669 | if (File->DirReadNext) {\r | |
670 | //\r | |
671 | // Directory read: populate Buffer with an EFI_FILE_INFO\r | |
672 | //\r | |
673 | Status = FvFsGetFileInfo (File->DirReadNext, BufferSize, Buffer);\r | |
674 | if (!EFI_ERROR (Status)) {\r | |
675 | //\r | |
676 | // Successfully read a directory entry, now update the pointer to the\r | |
677 | // next file, which will be read on the next call to this function\r | |
678 | //\r | |
679 | FvFileInfoLink = GetNextNode (&Instance->FileInfoHead, &File->DirReadNext->Link);\r | |
680 | if (IsNull (&Instance->FileInfoHead, FvFileInfoLink)) {\r | |
681 | //\r | |
682 | // No more files left\r | |
683 | //\r | |
684 | File->DirReadNext = NULL;\r | |
685 | } else {\r | |
686 | File->DirReadNext = FVFS_FILE_INFO_FROM_LINK (FvFileInfoLink);\r | |
687 | }\r | |
688 | }\r | |
1436aea4 | 689 | \r |
9da91aea BJ |
690 | return Status;\r |
691 | } else {\r | |
692 | //\r | |
693 | // Directory read. All entries have been read, so return a zero-size\r | |
694 | // buffer.\r | |
695 | //\r | |
696 | *BufferSize = 0;\r | |
697 | return EFI_SUCCESS;\r | |
698 | }\r | |
699 | } else {\r | |
270fc03f | 700 | FileSize = (UINTN)File->FvFileInfo->FileInfo.FileSize;\r |
9da91aea BJ |
701 | \r |
702 | FileBuffer = AllocateZeroPool (FileSize);\r | |
703 | if (FileBuffer == NULL) {\r | |
704 | return EFI_DEVICE_ERROR;\r | |
705 | }\r | |
706 | \r | |
707 | Status = FvFsReadFile (File->Instance->FvProtocol, File->FvFileInfo, &FileSize, &FileBuffer);\r | |
708 | if (EFI_ERROR (Status)) {\r | |
b5bd3ed6 | 709 | FreePool (FileBuffer);\r |
9da91aea BJ |
710 | return EFI_DEVICE_ERROR;\r |
711 | }\r | |
712 | \r | |
713 | if (*BufferSize + File->Position > FileSize) {\r | |
270fc03f | 714 | *BufferSize = (UINTN)(FileSize - File->Position);\r |
9da91aea BJ |
715 | }\r |
716 | \r | |
1436aea4 | 717 | CopyMem (Buffer, (UINT8 *)FileBuffer + File->Position, *BufferSize);\r |
9da91aea BJ |
718 | File->Position += *BufferSize;\r |
719 | \r | |
b5bd3ed6 VO |
720 | FreePool (FileBuffer);\r |
721 | \r | |
9da91aea BJ |
722 | return EFI_SUCCESS;\r |
723 | }\r | |
724 | }\r | |
725 | \r | |
726 | /**\r | |
727 | Writes data to a file.\r | |
728 | \r | |
729 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the file\r | |
730 | handle to write data to.\r | |
731 | @param BufferSize On input, the size of the Buffer. On output, the amount of data\r | |
732 | actually written. In both cases, the size is measured in bytes.\r | |
733 | @param Buffer The buffer of data to write.\r | |
734 | \r | |
735 | @retval EFI_SUCCESS Data was written.\r | |
736 | @retval EFI_UNSUPPORTED Writes to open directory files are not supported.\r | |
737 | @retval EFI_NO_MEDIA The device has no medium.\r | |
738 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
739 | @retval EFI_DEVICE_ERROR An attempt was made to write to a deleted file.\r | |
740 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
741 | @retval EFI_WRITE_PROTECTED The file or medium is write-protected.\r | |
742 | @retval EFI_ACCESS_DENIED The file was opened read only.\r | |
743 | @retval EFI_VOLUME_FULL The volume is full.\r | |
744 | \r | |
745 | **/\r | |
746 | EFI_STATUS\r | |
747 | EFIAPI\r | |
748 | FvSimpleFileSystemWrite (\r | |
1436aea4 MK |
749 | IN EFI_FILE_PROTOCOL *This,\r |
750 | IN OUT UINTN *BufferSize,\r | |
751 | IN VOID *Buffer\r | |
9da91aea BJ |
752 | )\r |
753 | {\r | |
1436aea4 MK |
754 | FV_FILESYSTEM_INSTANCE *Instance;\r |
755 | FV_FILESYSTEM_FILE *File;\r | |
9da91aea | 756 | \r |
1436aea4 | 757 | File = FVFS_FILE_FROM_FILE_THIS (This);\r |
9da91aea BJ |
758 | Instance = File->Instance;\r |
759 | \r | |
760 | if (File->FvFileInfo == Instance->Root->FvFileInfo) {\r | |
761 | return EFI_UNSUPPORTED;\r | |
762 | } else {\r | |
763 | return EFI_WRITE_PROTECTED;\r | |
764 | }\r | |
765 | }\r | |
766 | \r | |
767 | /**\r | |
768 | Returns a file's current position.\r | |
769 | \r | |
770 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the file\r | |
771 | handle to get the current position on.\r | |
772 | @param Position The address to return the file's current position value.\r | |
773 | \r | |
774 | @retval EFI_SUCCESS The position was returned.\r | |
775 | @retval EFI_UNSUPPORTED The request is not valid on open directories.\r | |
776 | @retval EFI_DEVICE_ERROR An attempt was made to get the position from a deleted file.\r | |
777 | \r | |
778 | **/\r | |
779 | EFI_STATUS\r | |
780 | EFIAPI\r | |
781 | FvSimpleFileSystemGetPosition (\r | |
1436aea4 MK |
782 | IN EFI_FILE_PROTOCOL *This,\r |
783 | OUT UINT64 *Position\r | |
9da91aea BJ |
784 | )\r |
785 | {\r | |
1436aea4 MK |
786 | FV_FILESYSTEM_INSTANCE *Instance;\r |
787 | FV_FILESYSTEM_FILE *File;\r | |
9da91aea | 788 | \r |
1436aea4 | 789 | File = FVFS_FILE_FROM_FILE_THIS (This);\r |
9da91aea BJ |
790 | Instance = File->Instance;\r |
791 | \r | |
792 | if (File->FvFileInfo == Instance->Root->FvFileInfo) {\r | |
793 | return EFI_UNSUPPORTED;\r | |
794 | } else {\r | |
795 | *Position = File->Position;\r | |
796 | return EFI_SUCCESS;\r | |
797 | }\r | |
798 | }\r | |
799 | \r | |
800 | /**\r | |
801 | Sets a file's current position.\r | |
802 | \r | |
803 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the\r | |
804 | file handle to set the requested position on.\r | |
805 | @param Position The byte position from the start of the file to set.\r | |
806 | \r | |
807 | @retval EFI_SUCCESS The position was set.\r | |
808 | @retval EFI_UNSUPPORTED The seek request for nonzero is not valid on open\r | |
809 | directories.\r | |
810 | @retval EFI_DEVICE_ERROR An attempt was made to set the position of a deleted file.\r | |
811 | \r | |
812 | **/\r | |
813 | EFI_STATUS\r | |
814 | EFIAPI\r | |
815 | FvSimpleFileSystemSetPosition (\r | |
1436aea4 MK |
816 | IN EFI_FILE_PROTOCOL *This,\r |
817 | IN UINT64 Position\r | |
9da91aea BJ |
818 | )\r |
819 | {\r | |
1436aea4 MK |
820 | FV_FILESYSTEM_INSTANCE *Instance;\r |
821 | FV_FILESYSTEM_FILE *File;\r | |
9da91aea | 822 | \r |
1436aea4 | 823 | File = FVFS_FILE_FROM_FILE_THIS (This);\r |
9da91aea BJ |
824 | Instance = File->Instance;\r |
825 | \r | |
826 | if (File->FvFileInfo == Instance->Root->FvFileInfo) {\r | |
827 | if (Position != 0) {\r | |
828 | return EFI_UNSUPPORTED;\r | |
829 | }\r | |
1436aea4 | 830 | \r |
9da91aea BJ |
831 | //\r |
832 | // Reset directory position to first entry\r | |
833 | //\r | |
ebd2be68 | 834 | if (File->DirReadNext) {\r |
d1102dba | 835 | File->DirReadNext = FVFS_GET_FIRST_FILE_INFO (Instance);\r |
ebd2be68 | 836 | }\r |
9da91aea BJ |
837 | } else if (Position == 0xFFFFFFFFFFFFFFFFull) {\r |
838 | File->Position = File->FvFileInfo->FileInfo.FileSize;\r | |
839 | } else {\r | |
840 | File->Position = Position;\r | |
841 | }\r | |
842 | \r | |
843 | return EFI_SUCCESS;\r | |
844 | }\r | |
845 | \r | |
846 | /**\r | |
847 | Flushes all modified data associated with a file to a device.\r | |
848 | \r | |
849 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the file\r | |
850 | handle to flush.\r | |
851 | \r | |
852 | @retval EFI_SUCCESS The data was flushed.\r | |
853 | @retval EFI_NO_MEDIA The device has no medium.\r | |
854 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
855 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
856 | @retval EFI_WRITE_PROTECTED The file or medium is write-protected.\r | |
857 | @retval EFI_ACCESS_DENIED The file was opened read-only.\r | |
858 | @retval EFI_VOLUME_FULL The volume is full.\r | |
859 | \r | |
860 | **/\r | |
861 | EFI_STATUS\r | |
862 | EFIAPI\r | |
863 | FvSimpleFileSystemFlush (\r | |
864 | IN EFI_FILE_PROTOCOL *This\r | |
865 | )\r | |
866 | {\r | |
867 | return EFI_WRITE_PROTECTED;\r | |
868 | }\r | |
869 | \r | |
870 | /**\r | |
871 | Close and delete the file handle.\r | |
872 | \r | |
873 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the\r | |
874 | handle to the file to delete.\r | |
875 | \r | |
876 | @retval EFI_SUCCESS The file was closed and deleted, and the handle was closed.\r | |
877 | @retval EFI_WARN_DELETE_FAILURE The handle was closed, but the file was not deleted.\r | |
878 | \r | |
879 | **/\r | |
880 | EFI_STATUS\r | |
881 | EFIAPI\r | |
882 | FvSimpleFileSystemDelete (\r | |
1436aea4 | 883 | IN EFI_FILE_PROTOCOL *This\r |
9da91aea BJ |
884 | )\r |
885 | {\r | |
1436aea4 | 886 | EFI_STATUS Status;\r |
9da91aea BJ |
887 | \r |
888 | Status = FvSimpleFileSystemClose (This);\r | |
889 | ASSERT_EFI_ERROR (Status);\r | |
890 | \r | |
891 | return EFI_WARN_DELETE_FAILURE;\r | |
892 | }\r | |
893 | \r | |
894 | /**\r | |
895 | Returns information about a file.\r | |
896 | \r | |
897 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the file\r | |
898 | handle the requested information is for.\r | |
899 | @param InformationType The type identifier for the information being requested.\r | |
900 | @param BufferSize On input, the size of Buffer. On output, the amount of data\r | |
901 | returned in Buffer. In both cases, the size is measured in bytes.\r | |
902 | @param Buffer A pointer to the data buffer to return. The buffer's type is\r | |
903 | indicated by InformationType.\r | |
904 | \r | |
905 | @retval EFI_SUCCESS The information was returned.\r | |
906 | @retval EFI_UNSUPPORTED The InformationType is not known.\r | |
907 | @retval EFI_NO_MEDIA The device has no medium.\r | |
908 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
909 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
910 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.\r | |
911 | BufferSize has been updated with the size needed to complete\r | |
912 | the request.\r | |
913 | **/\r | |
914 | EFI_STATUS\r | |
915 | EFIAPI\r | |
916 | FvSimpleFileSystemGetInfo (\r | |
1436aea4 MK |
917 | IN EFI_FILE_PROTOCOL *This,\r |
918 | IN EFI_GUID *InformationType,\r | |
919 | IN OUT UINTN *BufferSize,\r | |
920 | OUT VOID *Buffer\r | |
9da91aea BJ |
921 | )\r |
922 | {\r | |
1436aea4 MK |
923 | FV_FILESYSTEM_FILE *File;\r |
924 | EFI_FILE_SYSTEM_INFO *FsInfoOut;\r | |
925 | EFI_FILE_SYSTEM_VOLUME_LABEL *FsVolumeLabel;\r | |
926 | FV_FILESYSTEM_INSTANCE *Instance;\r | |
927 | UINTN Size;\r | |
928 | EFI_STATUS Status;\r | |
9da91aea BJ |
929 | \r |
930 | File = FVFS_FILE_FROM_FILE_THIS (This);\r | |
931 | \r | |
932 | if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid)) {\r | |
933 | //\r | |
934 | // Return filesystem info\r | |
935 | //\r | |
936 | Instance = File->Instance;\r | |
937 | \r | |
938 | Size = sizeof (EFI_FILE_SYSTEM_INFO) + StrSize (Instance->VolumeLabel) - sizeof (CHAR16);\r | |
939 | \r | |
940 | if (*BufferSize < Size) {\r | |
941 | *BufferSize = Size;\r | |
942 | return EFI_BUFFER_TOO_SMALL;\r | |
943 | }\r | |
944 | \r | |
945 | //\r | |
946 | // Cast output buffer for convenience\r | |
947 | //\r | |
1436aea4 | 948 | FsInfoOut = (EFI_FILE_SYSTEM_INFO *)Buffer;\r |
9da91aea BJ |
949 | \r |
950 | CopyMem (FsInfoOut, &mFsInfoTemplate, sizeof (EFI_FILE_SYSTEM_INFO));\r | |
1436aea4 MK |
951 | Status = StrnCpyS (\r |
952 | FsInfoOut->VolumeLabel,\r | |
953 | (*BufferSize - OFFSET_OF (EFI_FILE_SYSTEM_INFO, VolumeLabel)) / sizeof (CHAR16),\r | |
954 | Instance->VolumeLabel,\r | |
955 | StrLen (Instance->VolumeLabel)\r | |
956 | );\r | |
9da91aea BJ |
957 | ASSERT_EFI_ERROR (Status);\r |
958 | FsInfoOut->Size = Size;\r | |
959 | return Status;\r | |
960 | } else if (CompareGuid (InformationType, &gEfiFileInfoGuid)) {\r | |
961 | //\r | |
962 | // Return file info\r | |
963 | //\r | |
1436aea4 | 964 | return FvFsGetFileInfo (File->FvFileInfo, BufferSize, (EFI_FILE_INFO *)Buffer);\r |
9da91aea BJ |
965 | } else if (CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid)) {\r |
966 | //\r | |
967 | // Return Volume Label\r | |
968 | //\r | |
969 | Instance = File->Instance;\r | |
1436aea4 | 970 | Size = sizeof (EFI_FILE_SYSTEM_VOLUME_LABEL) + StrSize (Instance->VolumeLabel) - sizeof (CHAR16);\r |
9da91aea BJ |
971 | if (*BufferSize < Size) {\r |
972 | *BufferSize = Size;\r | |
973 | return EFI_BUFFER_TOO_SMALL;\r | |
974 | }\r | |
975 | \r | |
1436aea4 MK |
976 | FsVolumeLabel = (EFI_FILE_SYSTEM_VOLUME_LABEL *)Buffer;\r |
977 | Status = StrnCpyS (\r | |
978 | FsVolumeLabel->VolumeLabel,\r | |
979 | (*BufferSize - OFFSET_OF (EFI_FILE_SYSTEM_VOLUME_LABEL, VolumeLabel)) / sizeof (CHAR16),\r | |
980 | Instance->VolumeLabel,\r | |
981 | StrLen (Instance->VolumeLabel)\r | |
982 | );\r | |
9da91aea BJ |
983 | ASSERT_EFI_ERROR (Status);\r |
984 | return Status;\r | |
985 | } else {\r | |
986 | return EFI_UNSUPPORTED;\r | |
987 | }\r | |
988 | }\r | |
989 | \r | |
990 | /**\r | |
991 | Sets information about a file.\r | |
992 | \r | |
993 | @param This A pointer to the EFI_FILE_PROTOCOL instance that is the file\r | |
994 | handle the information is for.\r | |
995 | @param InformationType The type identifier for the information being set.\r | |
996 | @param BufferSize The size, in bytes, of Buffer.\r | |
997 | @param Buffer A pointer to the data buffer to write. The buffer's type is\r | |
998 | indicated by InformationType.\r | |
999 | \r | |
1000 | @retval EFI_SUCCESS The information was set.\r | |
1001 | @retval EFI_UNSUPPORTED The InformationType is not known.\r | |
1002 | @retval EFI_NO_MEDIA The device has no medium.\r | |
1003 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
1004 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
1005 | @retval EFI_WRITE_PROTECTED InformationType is EFI_FILE_INFO_ID and the media is\r | |
1006 | read-only.\r | |
1007 | @retval EFI_WRITE_PROTECTED InformationType is EFI_FILE_PROTOCOL_SYSTEM_INFO_ID\r | |
1008 | and the media is read only.\r | |
1009 | @retval EFI_WRITE_PROTECTED InformationType is EFI_FILE_SYSTEM_VOLUME_LABEL_ID\r | |
1010 | and the media is read-only.\r | |
1011 | @retval EFI_ACCESS_DENIED An attempt is made to change the name of a file to a\r | |
1012 | file that is already present.\r | |
1013 | @retval EFI_ACCESS_DENIED An attempt is being made to change the EFI_FILE_DIRECTORY\r | |
1014 | Attribute.\r | |
1015 | @retval EFI_ACCESS_DENIED An attempt is being made to change the size of a directory.\r | |
1016 | @retval EFI_ACCESS_DENIED InformationType is EFI_FILE_INFO_ID and the file was opened\r | |
1017 | read-only and an attempt is being made to modify a field\r | |
1018 | other than Attribute.\r | |
1019 | @retval EFI_VOLUME_FULL The volume is full.\r | |
1020 | @retval EFI_BAD_BUFFER_SIZE BufferSize is smaller than the size of the type indicated\r | |
1021 | by InformationType.\r | |
1022 | \r | |
1023 | **/\r | |
1024 | EFI_STATUS\r | |
1025 | EFIAPI\r | |
1026 | FvSimpleFileSystemSetInfo (\r | |
1436aea4 MK |
1027 | IN EFI_FILE_PROTOCOL *This,\r |
1028 | IN EFI_GUID *InformationType,\r | |
1029 | IN UINTN BufferSize,\r | |
1030 | IN VOID *Buffer\r | |
9da91aea BJ |
1031 | )\r |
1032 | {\r | |
d1102dba | 1033 | if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid) ||\r |
9da91aea | 1034 | CompareGuid (InformationType, &gEfiFileInfoGuid) ||\r |
1436aea4 MK |
1035 | CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid))\r |
1036 | {\r | |
9da91aea BJ |
1037 | return EFI_WRITE_PROTECTED;\r |
1038 | }\r | |
1039 | \r | |
1040 | return EFI_UNSUPPORTED;\r | |
1041 | }\r |