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d2b4564b | 1 | /** @file\r |
2 | Provides interface to EFI_FILE_HANDLE functionality.\r | |
3 | \r | |
9095d37b | 4 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved. <BR>\r |
9344f092 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
d2b4564b | 6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include <Uefi.h>\r | |
10 | \r | |
b1f95a06 | 11 | #include <Protocol/SimpleFileSystem.h>\r |
4eb59be3 | 12 | #include <Protocol/UnicodeCollation.h>\r |
b1f95a06 | 13 | \r |
14 | #include <Guid/FileInfo.h>\r | |
15 | \r | |
d2b4564b | 16 | #include <Library/DebugLib.h>\r |
17 | #include <Library/MemoryAllocationLib.h>\r | |
b1f95a06 | 18 | #include <Library/BaseLib.h>\r |
19 | #include <Library/BaseMemoryLib.h>\r | |
b3011f40 | 20 | #include <Library/FileHandleLib.h>\r |
21 | #include <Library/PcdLib.h>\r | |
22 | #include <Library/PrintLib.h>\r | |
d2b4564b | 23 | \r |
4eb59be3 | 24 | CONST UINT16 gUnicodeFileTag = EFI_UNICODE_BYTE_ORDER_MARK;\r |
25 | \r | |
d2b4564b | 26 | #define MAX_FILE_NAME_LEN 522 // (20 * (6+5+2))+1) unicode characters from EFI FAT spec (doubled for bytes)\r |
27 | #define FIND_XXXXX_FILE_BUFFER_SIZE (SIZE_OF_EFI_FILE_INFO + MAX_FILE_NAME_LEN)\r | |
28 | \r | |
29 | /**\r | |
a405b86d | 30 | This function will retrieve the information about the file for the handle\r |
d2b4564b | 31 | specified and store it in allocated pool memory.\r |
32 | \r | |
a405b86d | 33 | This function allocates a buffer to store the file's information. It is the\r |
69817bf8 | 34 | caller's responsibility to free the buffer\r |
d2b4564b | 35 | \r |
a405b86d | 36 | @param FileHandle The file handle of the file for which information is\r |
d2b4564b | 37 | being requested.\r |
38 | \r | |
39 | @retval NULL information could not be retrieved.\r | |
40 | \r | |
41 | @return the information about the file\r | |
42 | **/\r | |
43 | EFI_FILE_INFO*\r | |
44 | EFIAPI\r | |
45 | FileHandleGetInfo (\r | |
46 | IN EFI_FILE_HANDLE FileHandle\r | |
47 | )\r | |
48 | {\r | |
a405b86d | 49 | EFI_FILE_INFO *FileInfo;\r |
d2b4564b | 50 | UINTN FileInfoSize;\r |
51 | EFI_STATUS Status;\r | |
52 | \r | |
4eb59be3 | 53 | if (FileHandle == NULL) {\r |
54 | return (NULL);\r | |
55 | }\r | |
d2b4564b | 56 | \r |
57 | //\r | |
58 | // Get the required size to allocate\r | |
59 | //\r | |
d2b4564b | 60 | FileInfoSize = 0;\r |
a405b86d | 61 | FileInfo = NULL;\r |
62 | Status = FileHandle->GetInfo(FileHandle,\r | |
63 | &gEfiFileInfoGuid,\r | |
64 | &FileInfoSize,\r | |
4eb59be3 | 65 | NULL);\r |
66 | if (Status == EFI_BUFFER_TOO_SMALL){\r | |
67 | //\r | |
68 | // error is expected. getting size to allocate\r | |
69 | //\r | |
70 | FileInfo = AllocateZeroPool(FileInfoSize);\r | |
71 | //\r | |
72 | // now get the information\r | |
73 | //\r | |
74 | Status = FileHandle->GetInfo(FileHandle,\r | |
75 | &gEfiFileInfoGuid,\r | |
76 | &FileInfoSize,\r | |
77 | FileInfo);\r | |
78 | //\r | |
79 | // if we got an error free the memory and return NULL\r | |
80 | //\r | |
037ca235 | 81 | if (EFI_ERROR(Status) && (FileInfo != NULL)) {\r |
4eb59be3 | 82 | FreePool(FileInfo);\r |
037ca235 | 83 | FileInfo = NULL;\r |
4eb59be3 | 84 | }\r |
d2b4564b | 85 | }\r |
a405b86d | 86 | return (FileInfo);\r |
d2b4564b | 87 | }\r |
88 | \r | |
89 | /**\r | |
a405b86d | 90 | This function sets the information about the file for the opened handle\r |
d2b4564b | 91 | specified.\r |
92 | \r | |
a405b86d | 93 | @param[in] FileHandle The file handle of the file for which information\r |
94 | is being set.\r | |
d2b4564b | 95 | \r |
a405b86d | 96 | @param[in] FileInfo The information to set.\r |
d2b4564b | 97 | \r |
b0934ac4 | 98 | @retval EFI_SUCCESS The information was set.\r |
a405b86d | 99 | @retval EFI_INVALID_PARAMETER A parameter was out of range or invalid.\r |
100 | @retval EFI_UNSUPPORTED The FileHandle does not support FileInfo.\r | |
b0934ac4 | 101 | @retval EFI_NO_MEDIA The device has no medium.\r |
102 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
103 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
104 | @retval EFI_WRITE_PROTECTED The file or medium is write protected.\r | |
a405b86d | 105 | @retval EFI_ACCESS_DENIED The file was opened read only.\r |
106 | @retval EFI_VOLUME_FULL The volume is full.\r | |
d2b4564b | 107 | **/\r |
108 | EFI_STATUS\r | |
109 | EFIAPI\r | |
110 | FileHandleSetInfo (\r | |
b0934ac4 | 111 | IN EFI_FILE_HANDLE FileHandle,\r |
d2b4564b | 112 | IN CONST EFI_FILE_INFO *FileInfo\r |
113 | )\r | |
114 | {\r | |
a405b86d | 115 | \r |
183ecff5 JC |
116 | if (FileHandle == NULL || FileInfo == NULL) {\r |
117 | return (EFI_INVALID_PARAMETER);\r | |
118 | }\r | |
d2b4564b | 119 | \r |
d2b4564b | 120 | //\r |
121 | // Set the info\r | |
122 | //\r | |
a405b86d | 123 | return (FileHandle->SetInfo(FileHandle,\r |
3d342022 | 124 | &gEfiFileInfoGuid,\r |
d2b4564b | 125 | (UINTN)FileInfo->Size,\r |
126 | (EFI_FILE_INFO*)FileInfo));\r | |
a405b86d | 127 | }\r |
d2b4564b | 128 | \r |
129 | /**\r | |
130 | This function reads information from an opened file.\r | |
131 | \r | |
a405b86d | 132 | If FileHandle is not a directory, the function reads the requested number of\r |
133 | bytes from the file at the file's current position and returns them in Buffer.\r | |
d2b4564b | 134 | If the read goes beyond the end of the file, the read length is truncated to the\r |
a405b86d | 135 | end of the file. The file's current position is increased by the number of bytes\r |
136 | returned. If FileHandle is a directory, the function reads the directory entry\r | |
137 | at the file's current position and returns the entry in Buffer. If the Buffer\r | |
138 | is not large enough to hold the current directory entry, then\r | |
139 | EFI_BUFFER_TOO_SMALL is returned and the current file position is not updated.\r | |
140 | BufferSize is set to be the size of the buffer needed to read the entry. On\r | |
141 | success, the current position is updated to the next directory entry. If there\r | |
142 | are no more directory entries, the read returns a zero-length buffer.\r | |
d2b4564b | 143 | EFI_FILE_INFO is the structure returned as the directory entry.\r |
144 | \r | |
145 | @param FileHandle the opened file handle\r | |
a405b86d | 146 | @param BufferSize on input the size of buffer in bytes. on return\r |
d2b4564b | 147 | the number of bytes written.\r |
148 | @param Buffer the buffer to put read data into.\r | |
149 | \r | |
a405b86d | 150 | @retval EFI_SUCCESS Data was read.\r |
151 | @retval EFI_NO_MEDIA The device has no media.\r | |
152 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
153 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
154 | @retval EFI_BUFFER_TO_SMALL Buffer is too small. ReadSize contains required\r | |
d2b4564b | 155 | size.\r |
156 | \r | |
157 | **/\r | |
158 | EFI_STATUS\r | |
159 | EFIAPI\r | |
160 | FileHandleRead(\r | |
161 | IN EFI_FILE_HANDLE FileHandle,\r | |
162 | IN OUT UINTN *BufferSize,\r | |
163 | OUT VOID *Buffer\r | |
164 | )\r | |
165 | {\r | |
183ecff5 JC |
166 | if (FileHandle == NULL) {\r |
167 | return (EFI_INVALID_PARAMETER);\r | |
168 | }\r | |
d2b4564b | 169 | \r |
170 | //\r | |
171 | // Perform the read based on EFI_FILE_PROTOCOL\r | |
172 | //\r | |
173 | return (FileHandle->Read(FileHandle, BufferSize, Buffer));\r | |
174 | }\r | |
175 | \r | |
176 | \r | |
177 | /**\r | |
178 | Write data to a file.\r | |
179 | \r | |
a405b86d | 180 | This function writes the specified number of bytes to the file at the current\r |
181 | file position. The current file position is advanced the actual number of bytes\r | |
182 | written, which is returned in BufferSize. Partial writes only occur when there\r | |
183 | has been a data error during the write attempt (such as "volume space full").\r | |
184 | The file is automatically grown to hold the data if required. Direct writes to\r | |
d2b4564b | 185 | opened directories are not supported.\r |
186 | \r | |
187 | @param FileHandle The opened file for writing\r | |
188 | @param BufferSize on input the number of bytes in Buffer. On output\r | |
189 | the number of bytes written.\r | |
190 | @param Buffer the buffer containing data to write is stored.\r | |
191 | \r | |
b0934ac4 | 192 | @retval EFI_SUCCESS Data was written.\r |
193 | @retval EFI_UNSUPPORTED Writes to an open directory are not supported.\r | |
194 | @retval EFI_NO_MEDIA The device has no media.\r | |
195 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
196 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
197 | @retval EFI_WRITE_PROTECTED The device is write-protected.\r | |
198 | @retval EFI_ACCESS_DENIED The file was open for read only.\r | |
199 | @retval EFI_VOLUME_FULL The volume is full.\r | |
d2b4564b | 200 | **/\r |
201 | EFI_STATUS\r | |
202 | EFIAPI\r | |
203 | FileHandleWrite(\r | |
204 | IN EFI_FILE_HANDLE FileHandle,\r | |
205 | IN OUT UINTN *BufferSize,\r | |
206 | IN VOID *Buffer\r | |
207 | )\r | |
208 | {\r | |
183ecff5 JC |
209 | if (FileHandle == NULL) {\r |
210 | return (EFI_INVALID_PARAMETER);\r | |
211 | }\r | |
212 | \r | |
d2b4564b | 213 | //\r |
214 | // Perform the write based on EFI_FILE_PROTOCOL\r | |
215 | //\r | |
216 | return (FileHandle->Write(FileHandle, BufferSize, Buffer));\r | |
217 | }\r | |
218 | \r | |
a405b86d | 219 | /**\r |
d2b4564b | 220 | Close an open file handle.\r |
221 | \r | |
a405b86d | 222 | This function closes a specified file handle. All "dirty" cached file data is\r |
223 | flushed to the device, and the file is closed. In all cases the handle is\r | |
d2b4564b | 224 | closed.\r |
225 | \r | |
226 | @param FileHandle the file handle to close.\r | |
227 | \r | |
3868d06d | 228 | @retval EFI_SUCCESS the file handle was closed successfully.\r |
d2b4564b | 229 | **/\r |
230 | EFI_STATUS\r | |
231 | EFIAPI\r | |
232 | FileHandleClose (\r | |
233 | IN EFI_FILE_HANDLE FileHandle\r | |
234 | )\r | |
235 | {\r | |
236 | EFI_STATUS Status;\r | |
183ecff5 JC |
237 | \r |
238 | if (FileHandle == NULL) {\r | |
239 | return (EFI_INVALID_PARAMETER);\r | |
240 | }\r | |
241 | \r | |
d2b4564b | 242 | //\r |
243 | // Perform the Close based on EFI_FILE_PROTOCOL\r | |
244 | //\r | |
245 | Status = FileHandle->Close(FileHandle);\r | |
246 | return Status;\r | |
247 | }\r | |
248 | \r | |
249 | /**\r | |
250 | Delete a file and close the handle\r | |
251 | \r | |
252 | This function closes and deletes a file. In all cases the file handle is closed.\r | |
a405b86d | 253 | If the file cannot be deleted, the warning code EFI_WARN_DELETE_FAILURE is\r |
d2b4564b | 254 | returned, but the handle is still closed.\r |
255 | \r | |
256 | @param FileHandle the file handle to delete\r | |
257 | \r | |
3868d06d | 258 | @retval EFI_SUCCESS the file was closed successfully\r |
a405b86d | 259 | @retval EFI_WARN_DELETE_FAILURE the handle was closed, but the file was not\r |
d2b4564b | 260 | deleted\r |
b0934ac4 | 261 | @retval INVALID_PARAMETER One of the parameters has an invalid value.\r |
d2b4564b | 262 | **/\r |
263 | EFI_STATUS\r | |
264 | EFIAPI\r | |
265 | FileHandleDelete (\r | |
b0934ac4 | 266 | IN EFI_FILE_HANDLE FileHandle\r |
d2b4564b | 267 | )\r |
268 | {\r | |
269 | EFI_STATUS Status;\r | |
183ecff5 JC |
270 | \r |
271 | if (FileHandle == NULL) {\r | |
272 | return (EFI_INVALID_PARAMETER);\r | |
273 | }\r | |
274 | \r | |
d2b4564b | 275 | //\r |
276 | // Perform the Delete based on EFI_FILE_PROTOCOL\r | |
277 | //\r | |
278 | Status = FileHandle->Delete(FileHandle);\r | |
279 | return Status;\r | |
280 | }\r | |
281 | \r | |
282 | /**\r | |
283 | Set the current position in a file.\r | |
284 | \r | |
a405b86d | 285 | This function sets the current file position for the handle to the position\r |
d2b4564b | 286 | supplied. With the exception of seeking to position 0xFFFFFFFFFFFFFFFF, only\r |
a405b86d | 287 | absolute positioning is supported, and seeking past the end of the file is\r |
288 | allowed (a subsequent write would grow the file). Seeking to position\r | |
d2b4564b | 289 | 0xFFFFFFFFFFFFFFFF causes the current position to be set to the end of the file.\r |
a405b86d | 290 | If FileHandle is a directory, the only position that may be set is zero. This\r |
d2b4564b | 291 | has the effect of starting the read process of the directory entries over.\r |
292 | \r | |
293 | @param FileHandle The file handle on which the position is being set\r | |
3868d06d | 294 | @param Position Byte position from beginning of file\r |
d2b4564b | 295 | \r |
3868d06d | 296 | @retval EFI_SUCCESS Operation completed successfully.\r |
a405b86d | 297 | @retval EFI_UNSUPPORTED the seek request for non-zero is not valid on\r |
d2b4564b | 298 | directories.\r |
299 | @retval INVALID_PARAMETER One of the parameters has an invalid value.\r | |
300 | **/\r | |
301 | EFI_STATUS\r | |
302 | EFIAPI\r | |
303 | FileHandleSetPosition (\r | |
b0934ac4 | 304 | IN EFI_FILE_HANDLE FileHandle,\r |
305 | IN UINT64 Position\r | |
d2b4564b | 306 | )\r |
307 | {\r | |
183ecff5 JC |
308 | if (FileHandle == NULL) {\r |
309 | return (EFI_INVALID_PARAMETER);\r | |
310 | }\r | |
311 | \r | |
d2b4564b | 312 | //\r |
313 | // Perform the SetPosition based on EFI_FILE_PROTOCOL\r | |
314 | //\r | |
315 | return (FileHandle->SetPosition(FileHandle, Position));\r | |
316 | }\r | |
317 | \r | |
a405b86d | 318 | /**\r |
d2b4564b | 319 | Gets a file's current position\r |
320 | \r | |
a405b86d | 321 | This function retrieves the current file position for the file handle. For\r |
322 | directories, the current file position has no meaning outside of the file\r | |
d2b4564b | 323 | system driver and as such the operation is not supported. An error is returned\r |
324 | if FileHandle is a directory.\r | |
325 | \r | |
326 | @param FileHandle The open file handle on which to get the position.\r | |
3868d06d | 327 | @param Position Byte position from beginning of file.\r |
d2b4564b | 328 | \r |
3868d06d | 329 | @retval EFI_SUCCESS the operation completed successfully.\r |
d2b4564b | 330 | @retval INVALID_PARAMETER One of the parameters has an invalid value.\r |
331 | @retval EFI_UNSUPPORTED the request is not valid on directories.\r | |
332 | **/\r | |
333 | EFI_STATUS\r | |
334 | EFIAPI\r | |
335 | FileHandleGetPosition (\r | |
336 | IN EFI_FILE_HANDLE FileHandle,\r | |
337 | OUT UINT64 *Position\r | |
338 | )\r | |
339 | {\r | |
183ecff5 | 340 | if (Position == NULL || FileHandle == NULL) {\r |
a405b86d | 341 | return (EFI_INVALID_PARAMETER);\r |
342 | }\r | |
183ecff5 | 343 | \r |
d2b4564b | 344 | //\r |
345 | // Perform the GetPosition based on EFI_FILE_PROTOCOL\r | |
346 | //\r | |
347 | return (FileHandle->GetPosition(FileHandle, Position));\r | |
348 | }\r | |
349 | /**\r | |
350 | Flushes data on a file\r | |
a405b86d | 351 | \r |
d2b4564b | 352 | This function flushes all modified data associated with a file to a device.\r |
353 | \r | |
354 | @param FileHandle The file handle on which to flush data\r | |
355 | \r | |
356 | @retval EFI_SUCCESS The data was flushed.\r | |
357 | @retval EFI_NO_MEDIA The device has no media.\r | |
358 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
359 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
360 | @retval EFI_WRITE_PROTECTED The file or medium is write protected.\r | |
361 | @retval EFI_ACCESS_DENIED The file was opened for read only.\r | |
362 | **/\r | |
363 | EFI_STATUS\r | |
364 | EFIAPI\r | |
365 | FileHandleFlush (\r | |
366 | IN EFI_FILE_HANDLE FileHandle\r | |
367 | )\r | |
368 | {\r | |
183ecff5 JC |
369 | if (FileHandle == NULL) {\r |
370 | return (EFI_INVALID_PARAMETER);\r | |
371 | }\r | |
372 | \r | |
d2b4564b | 373 | //\r |
374 | // Perform the Flush based on EFI_FILE_PROTOCOL\r | |
375 | //\r | |
376 | return (FileHandle->Flush(FileHandle));\r | |
377 | }\r | |
378 | \r | |
379 | /**\r | |
e84fb6eb | 380 | Function to determine if a given handle is a directory handle.\r |
d2b4564b | 381 | \r |
e84fb6eb | 382 | Open the file information on the DirHandle and verify that the Attribute\r |
d2b4564b | 383 | includes EFI_FILE_DIRECTORY bit set.\r |
384 | \r | |
e84fb6eb | 385 | @param[in] DirHandle Handle to open file.\r |
d2b4564b | 386 | \r |
e84fb6eb | 387 | @retval EFI_SUCCESS DirHandle is a directory.\r |
9095d37b LG |
388 | @retval EFI_INVALID_PARAMETER DirHandle is NULL.\r |
389 | The file information returns from FileHandleGetInfo is NULL.\r | |
e84fb6eb | 390 | @retval EFI_NOT_FOUND DirHandle is not a directory.\r |
d2b4564b | 391 | **/\r |
392 | EFI_STATUS\r | |
393 | EFIAPI\r | |
394 | FileHandleIsDirectory (\r | |
395 | IN EFI_FILE_HANDLE DirHandle\r | |
396 | )\r | |
397 | {\r | |
398 | EFI_FILE_INFO *DirInfo;\r | |
399 | \r | |
183ecff5 JC |
400 | if (DirHandle == NULL) {\r |
401 | return (EFI_INVALID_PARAMETER);\r | |
402 | }\r | |
a405b86d | 403 | \r |
d2b4564b | 404 | //\r |
405 | // get the file information for DirHandle\r | |
406 | //\r | |
407 | DirInfo = FileHandleGetInfo (DirHandle);\r | |
a405b86d | 408 | \r |
d2b4564b | 409 | //\r |
410 | // Parse DirInfo\r | |
411 | //\r | |
412 | if (DirInfo == NULL) {\r | |
413 | //\r | |
414 | // We got nothing...\r | |
415 | //\r | |
416 | return (EFI_INVALID_PARAMETER);\r | |
a405b86d | 417 | }\r |
d2b4564b | 418 | if ((DirInfo->Attribute & EFI_FILE_DIRECTORY) == 0) {\r |
419 | //\r | |
420 | // Attributes say this is not a directory\r | |
421 | //\r | |
422 | FreePool (DirInfo);\r | |
423 | return (EFI_NOT_FOUND);\r | |
424 | }\r | |
425 | //\r | |
426 | // all good...\r | |
427 | //\r | |
428 | FreePool (DirInfo);\r | |
429 | return (EFI_SUCCESS);\r | |
430 | }\r | |
431 | \r | |
b0934ac4 | 432 | /** Retrieve first entry from a directory.\r |
433 | \r | |
434 | This function takes an open directory handle and gets information from the\r | |
435 | first entry in the directory. A buffer is allocated to contain\r | |
436 | the information and a pointer to the buffer is returned in *Buffer. The\r | |
437 | caller can use FileHandleFindNextFile() to get subsequent directory entries.\r | |
d2b4564b | 438 | \r |
b0934ac4 | 439 | The buffer will be freed by FileHandleFindNextFile() when the last directory\r |
440 | entry is read. Otherwise, the caller must free the buffer, using FreePool,\r | |
441 | when finished with it.\r | |
d2b4564b | 442 | \r |
b0934ac4 | 443 | @param[in] DirHandle The file handle of the directory to search.\r |
444 | @param[out] Buffer The pointer to pointer to buffer for file's information.\r | |
d2b4564b | 445 | \r |
446 | @retval EFI_SUCCESS Found the first file.\r | |
447 | @retval EFI_NOT_FOUND Cannot find the directory.\r | |
448 | @retval EFI_NO_MEDIA The device has no media.\r | |
449 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
450 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
451 | @return Others status of FileHandleGetInfo, FileHandleSetPosition,\r | |
452 | or FileHandleRead\r | |
453 | **/\r | |
454 | EFI_STATUS\r | |
455 | EFIAPI\r | |
456 | FileHandleFindFirstFile (\r | |
457 | IN EFI_FILE_HANDLE DirHandle,\r | |
458 | OUT EFI_FILE_INFO **Buffer\r | |
459 | )\r | |
460 | {\r | |
461 | EFI_STATUS Status;\r | |
462 | UINTN BufferSize;\r | |
463 | \r | |
4eb59be3 | 464 | if (Buffer == NULL || DirHandle == NULL) {\r |
465 | return (EFI_INVALID_PARAMETER);\r | |
466 | }\r | |
d2b4564b | 467 | \r |
468 | //\r | |
469 | // verify that DirHandle is a directory\r | |
470 | //\r | |
471 | Status = FileHandleIsDirectory(DirHandle);\r | |
472 | if (EFI_ERROR(Status)) {\r | |
473 | return (Status);\r | |
a405b86d | 474 | }\r |
d2b4564b | 475 | \r |
4eb59be3 | 476 | //\r |
477 | // Allocate a buffer sized to struct size + enough for the string at the end\r | |
478 | //\r | |
479 | BufferSize = FIND_XXXXX_FILE_BUFFER_SIZE;\r | |
480 | *Buffer = AllocateZeroPool(BufferSize);\r | |
481 | if (*Buffer == NULL){\r | |
482 | return (EFI_OUT_OF_RESOURCES);\r | |
483 | }\r | |
484 | \r | |
d2b4564b | 485 | //\r |
3868d06d | 486 | // reset to the beginning of the directory\r |
d2b4564b | 487 | //\r |
488 | Status = FileHandleSetPosition(DirHandle, 0);\r | |
489 | if (EFI_ERROR(Status)) {\r | |
4eb59be3 | 490 | FreePool(*Buffer);\r |
491 | *Buffer = NULL;\r | |
d2b4564b | 492 | return (Status);\r |
a405b86d | 493 | }\r |
d2b4564b | 494 | \r |
d2b4564b | 495 | //\r |
496 | // read in the info about the first file\r | |
497 | //\r | |
498 | Status = FileHandleRead (DirHandle, &BufferSize, *Buffer);\r | |
499 | ASSERT(Status != EFI_BUFFER_TOO_SMALL);\r | |
74fa83fd | 500 | if (EFI_ERROR(Status) || BufferSize == 0) {\r |
d2b4564b | 501 | FreePool(*Buffer);\r |
502 | *Buffer = NULL;\r | |
74fa83fd | 503 | if (BufferSize == 0) {\r |
504 | return (EFI_NOT_FOUND);\r | |
505 | }\r | |
d2b4564b | 506 | return (Status);\r |
507 | }\r | |
508 | return (EFI_SUCCESS);\r | |
509 | }\r | |
d2b4564b | 510 | \r |
b0934ac4 | 511 | /** Retrieve next entries from a directory.\r |
512 | \r | |
513 | To use this function, the caller must first call the FileHandleFindFirstFile()\r | |
514 | function to get the first directory entry. Subsequent directory entries are\r | |
515 | retrieved by using the FileHandleFindNextFile() function. This function can\r | |
516 | be called several times to get each entry from the directory. If the call of\r | |
517 | FileHandleFindNextFile() retrieved the last directory entry, the next call of\r | |
518 | this function will set *NoFile to TRUE and free the buffer.\r | |
d2b4564b | 519 | \r |
b0934ac4 | 520 | @param[in] DirHandle The file handle of the directory.\r |
521 | @param[out] Buffer The pointer to buffer for file's information.\r | |
522 | @param[out] NoFile The pointer to boolean when last file is found.\r | |
d2b4564b | 523 | \r |
524 | @retval EFI_SUCCESS Found the next file, or reached last file\r | |
525 | @retval EFI_NO_MEDIA The device has no media.\r | |
526 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
527 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
528 | **/\r | |
529 | EFI_STATUS\r | |
530 | EFIAPI\r | |
531 | FileHandleFindNextFile(\r | |
b0934ac4 | 532 | IN EFI_FILE_HANDLE DirHandle,\r |
533 | OUT EFI_FILE_INFO *Buffer,\r | |
534 | OUT BOOLEAN *NoFile\r | |
d2b4564b | 535 | )\r |
536 | {\r | |
537 | EFI_STATUS Status;\r | |
538 | UINTN BufferSize;\r | |
539 | \r | |
183ecff5 JC |
540 | if (DirHandle == NULL || Buffer == NULL || NoFile == NULL) {\r |
541 | return (EFI_INVALID_PARAMETER);\r | |
542 | }\r | |
d2b4564b | 543 | \r |
544 | //\r | |
545 | // This BufferSize MUST stay equal to the originally allocated one in GetFirstFile\r | |
546 | //\r | |
547 | BufferSize = FIND_XXXXX_FILE_BUFFER_SIZE;\r | |
548 | \r | |
549 | //\r | |
550 | // read in the info about the next file\r | |
551 | //\r | |
552 | Status = FileHandleRead (DirHandle, &BufferSize, Buffer);\r | |
553 | ASSERT(Status != EFI_BUFFER_TOO_SMALL);\r | |
554 | if (EFI_ERROR(Status)) {\r | |
555 | return (Status);\r | |
556 | }\r | |
557 | \r | |
558 | //\r | |
559 | // If we read 0 bytes (but did not have erros) we already read in the last file.\r | |
560 | //\r | |
561 | if (BufferSize == 0) {\r | |
562 | FreePool(Buffer);\r | |
563 | *NoFile = TRUE;\r | |
564 | }\r | |
565 | \r | |
566 | return (EFI_SUCCESS);\r | |
567 | }\r | |
a405b86d | 568 | \r |
d2b4564b | 569 | /**\r |
570 | Retrieve the size of a file.\r | |
571 | \r | |
a405b86d | 572 | This function extracts the file size info from the FileHandle's EFI_FILE_INFO\r |
d2b4564b | 573 | data.\r |
574 | \r | |
b269f895 QS |
575 | @param[in] FileHandle The file handle from which size is retrieved.\r |
576 | @param[out] Size The pointer to size.\r | |
d2b4564b | 577 | \r |
3868d06d | 578 | @retval EFI_SUCCESS Operation was completed successfully.\r |
b269f895 QS |
579 | @retval EFI_DEVICE_ERROR Cannot access the file.\r |
580 | @retval EFI_INVALID_PARAMETER FileHandle is NULL.\r | |
581 | Size is NULL.\r | |
d2b4564b | 582 | **/\r |
583 | EFI_STATUS\r | |
584 | EFIAPI\r | |
585 | FileHandleGetSize (\r | |
586 | IN EFI_FILE_HANDLE FileHandle,\r | |
587 | OUT UINT64 *Size\r | |
588 | )\r | |
589 | {\r | |
590 | EFI_FILE_INFO *FileInfo;\r | |
591 | \r | |
183ecff5 JC |
592 | if (FileHandle == NULL || Size == NULL) {\r |
593 | return (EFI_INVALID_PARAMETER);\r | |
594 | }\r | |
a405b86d | 595 | \r |
d2b4564b | 596 | //\r |
597 | // get the FileInfo structure\r | |
598 | //\r | |
599 | FileInfo = FileHandleGetInfo(FileHandle);\r | |
600 | if (FileInfo == NULL) {\r | |
601 | return (EFI_DEVICE_ERROR);\r | |
602 | }\r | |
603 | \r | |
604 | //\r | |
605 | // Assign the Size pointer to the correct value\r | |
606 | //\r | |
607 | *Size = FileInfo->FileSize;\r | |
a405b86d | 608 | \r |
d2b4564b | 609 | //\r |
610 | // free the FileInfo memory\r | |
611 | //\r | |
612 | FreePool(FileInfo);\r | |
613 | \r | |
614 | return (EFI_SUCCESS);\r | |
b1f95a06 | 615 | }\r |
616 | \r | |
a405b86d | 617 | /**\r |
618 | Set the size of a file.\r | |
619 | \r | |
a405b86d | 620 | This function changes the file size info from the FileHandle's EFI_FILE_INFO\r |
621 | data.\r | |
622 | \r | |
b269f895 QS |
623 | @param[in] FileHandle The file handle whose size is to be changed.\r |
624 | @param[in] Size The new size.\r | |
a405b86d | 625 | \r |
b269f895 QS |
626 | @retval EFI_SUCCESS The operation completed successfully.\r |
627 | @retval EFI_DEVICE_ERROR Cannot access the file.\r | |
628 | @retval EFI_INVALID_PARAMETER FileHandle is NULL.\r | |
a405b86d | 629 | **/\r |
630 | EFI_STATUS\r | |
631 | EFIAPI\r | |
632 | FileHandleSetSize (\r | |
633 | IN EFI_FILE_HANDLE FileHandle,\r | |
634 | IN UINT64 Size\r | |
635 | )\r | |
636 | {\r | |
637 | EFI_FILE_INFO *FileInfo;\r | |
638 | EFI_STATUS Status;\r | |
639 | \r | |
183ecff5 JC |
640 | if (FileHandle == NULL) {\r |
641 | return (EFI_INVALID_PARAMETER);\r | |
642 | }\r | |
a405b86d | 643 | \r |
644 | //\r | |
645 | // get the FileInfo structure\r | |
646 | //\r | |
647 | FileInfo = FileHandleGetInfo(FileHandle);\r | |
648 | if (FileInfo == NULL) {\r | |
649 | return (EFI_DEVICE_ERROR);\r | |
650 | }\r | |
651 | \r | |
652 | //\r | |
653 | // Assign the FileSize pointer to the new value\r | |
654 | //\r | |
655 | FileInfo->FileSize = Size;\r | |
656 | \r | |
657 | Status = FileHandleSetInfo(FileHandle, FileInfo);\r | |
658 | //\r | |
659 | // free the FileInfo memory\r | |
660 | //\r | |
661 | FreePool(FileInfo);\r | |
662 | \r | |
663 | return (Status);\r | |
664 | }\r | |
b1f95a06 | 665 | \r |
666 | /**\r | |
a405b86d | 667 | Safely append (on the left) with automatic string resizing given length of Destination and\r |
b1f95a06 | 668 | desired length of copy from Source.\r |
669 | \r | |
a405b86d | 670 | append the first D characters of Source to the end of Destination, where D is\r |
671 | the lesser of Count and the StrLen() of Source. If appending those D characters\r | |
672 | will fit within Destination (whose Size is given as CurrentSize) and\r | |
673 | still leave room for a NULL terminator, then those characters are appended,\r | |
674 | starting at the original terminating NULL of Destination, and a new terminating\r | |
ac255da6 | 675 | NULL is appended.\r |
b1f95a06 | 676 | \r |
677 | If appending D characters onto Destination will result in a overflow of the size\r | |
678 | given in CurrentSize the string will be grown such that the copy can be performed\r | |
679 | and CurrentSize will be updated to the new size.\r | |
680 | \r | |
a405b86d | 681 | If Source is NULL, there is nothing to append, just return the current buffer in\r |
b1f95a06 | 682 | Destination.\r |
683 | \r | |
183ecff5 | 684 | if Destination is NULL, then return error\r |
a405b86d | 685 | if Destination's current length (including NULL terminator) is already more then\r |
b1f95a06 | 686 | CurrentSize, then ASSERT()\r |
687 | \r | |
4ff7e37b ED |
688 | @param[in, out] Destination The String to append onto\r |
689 | @param[in, out] CurrentSize on call the number of bytes in Destination. On\r | |
b1f95a06 | 690 | return possibly the new size (still in bytes). if NULL\r |
691 | then allocate whatever is needed.\r | |
692 | @param[in] Source The String to append from\r | |
a405b86d | 693 | @param[in] Count Maximum number of characters to append. if 0 then\r |
b1f95a06 | 694 | all are appended.\r |
695 | \r | |
696 | @return Destination return the resultant string.\r | |
697 | **/\r | |
a405b86d | 698 | CHAR16*\r |
b1f95a06 | 699 | EFIAPI\r |
700 | StrnCatGrowLeft (\r | |
701 | IN OUT CHAR16 **Destination,\r | |
702 | IN OUT UINTN *CurrentSize,\r | |
703 | IN CONST CHAR16 *Source,\r | |
704 | IN UINTN Count\r | |
a405b86d | 705 | )\r |
706 | {\r | |
b1f95a06 | 707 | UINTN DestinationStartSize;\r |
708 | UINTN NewSize;\r | |
727a4c71 | 709 | UINTN CopySize;\r |
b1f95a06 | 710 | \r |
183ecff5 JC |
711 | if (Destination == NULL) {\r |
712 | return (NULL);\r | |
713 | }\r | |
b1f95a06 | 714 | \r |
715 | //\r | |
716 | // If there's nothing to do then just return Destination\r | |
717 | //\r | |
718 | if (Source == NULL) {\r | |
719 | return (*Destination);\r | |
720 | }\r | |
721 | \r | |
722 | //\r | |
723 | // allow for NULL pointers address as Destination\r | |
724 | //\r | |
725 | if (*Destination != NULL) {\r | |
726 | ASSERT(CurrentSize != 0);\r | |
727 | DestinationStartSize = StrSize(*Destination);\r | |
728 | ASSERT(DestinationStartSize <= *CurrentSize);\r | |
729 | } else {\r | |
730 | DestinationStartSize = 0;\r | |
731 | // ASSERT(*CurrentSize == 0);\r | |
732 | }\r | |
733 | \r | |
734 | //\r | |
735 | // Append all of Source?\r | |
736 | //\r | |
737 | if (Count == 0) {\r | |
d595d4b1 | 738 | Count = StrSize(Source);\r |
b1f95a06 | 739 | }\r |
740 | \r | |
741 | //\r | |
742 | // Test and grow if required\r | |
743 | //\r | |
744 | if (CurrentSize != NULL) {\r | |
745 | NewSize = *CurrentSize;\r | |
d595d4b1 | 746 | while (NewSize < (DestinationStartSize + Count)) {\r |
747 | NewSize += 2 * Count;\r | |
b1f95a06 | 748 | }\r |
749 | *Destination = ReallocatePool(*CurrentSize, NewSize, *Destination);\r | |
750 | *CurrentSize = NewSize;\r | |
751 | } else {\r | |
d595d4b1 | 752 | *Destination = AllocateZeroPool(Count+sizeof(CHAR16));\r |
b1f95a06 | 753 | }\r |
02a758cb | 754 | if (*Destination == NULL) {\r |
755 | return NULL;\r | |
756 | }\r | |
b1f95a06 | 757 | \r |
727a4c71 | 758 | CopySize = StrSize(*Destination);\r |
46f43bc4 | 759 | CopyMem((*Destination)+((Count-2)/sizeof(CHAR16)), *Destination, CopySize);\r |
760 | CopyMem(*Destination, Source, Count-2);\r | |
b1f95a06 | 761 | return (*Destination);\r |
762 | }\r | |
763 | \r | |
764 | /**\r | |
a405b86d | 765 | Function to get a full filename given a EFI_FILE_HANDLE somewhere lower on the\r |
9095d37b LG |
766 | directory 'stack'. If the file is a directory, then append the '\' char at the\r |
767 | end of name string. If it's not a directory, then the last '\' should not be\r | |
ad6f6f86 | 768 | added.\r |
b1f95a06 | 769 | \r |
770 | if Handle is NULL, return EFI_INVALID_PARAMETER\r | |
771 | \r | |
772 | @param[in] Handle Handle to the Directory or File to create path to.\r | |
a405b86d | 773 | @param[out] FullFileName pointer to pointer to generated full file name. It\r |
b1f95a06 | 774 | is the responsibility of the caller to free this memory\r |
775 | with a call to FreePool().\r | |
776 | @retval EFI_SUCCESS the operation was sucessful and the FullFileName is valid.\r | |
777 | @retval EFI_INVALID_PARAMETER Handle was NULL.\r | |
778 | @retval EFI_INVALID_PARAMETER FullFileName was NULL.\r | |
779 | @retval EFI_OUT_OF_RESOURCES a memory allocation failed.\r | |
780 | **/\r | |
781 | EFI_STATUS\r | |
782 | EFIAPI\r | |
783 | FileHandleGetFileName (\r | |
784 | IN CONST EFI_FILE_HANDLE Handle,\r | |
785 | OUT CHAR16 **FullFileName\r | |
a405b86d | 786 | )\r |
787 | {\r | |
b1f95a06 | 788 | EFI_STATUS Status;\r |
789 | UINTN Size;\r | |
790 | EFI_FILE_HANDLE CurrentHandle;\r | |
791 | EFI_FILE_HANDLE NextHigherHandle;\r | |
792 | EFI_FILE_INFO *FileInfo;\r | |
793 | \r | |
794 | Size = 0;\r | |
b1f95a06 | 795 | \r |
796 | //\r | |
797 | // Check our parameters\r | |
798 | //\r | |
799 | if (FullFileName == NULL || Handle == NULL) {\r | |
800 | return (EFI_INVALID_PARAMETER);\r | |
801 | }\r | |
802 | \r | |
d595d4b1 | 803 | *FullFileName = NULL;\r |
a405b86d | 804 | CurrentHandle = NULL;\r |
d595d4b1 | 805 | \r |
b1f95a06 | 806 | Status = Handle->Open(Handle, &CurrentHandle, L".", EFI_FILE_MODE_READ, 0);\r |
807 | if (!EFI_ERROR(Status)) {\r | |
808 | //\r | |
809 | // Reverse out the current directory on the device\r | |
810 | //\r | |
811 | for (;;) {\r | |
812 | FileInfo = FileHandleGetInfo(CurrentHandle);\r | |
813 | if (FileInfo == NULL) {\r | |
814 | Status = EFI_OUT_OF_RESOURCES;\r | |
815 | break;\r | |
816 | } else {\r | |
817 | //\r | |
3868d06d | 818 | // We got info... do we have a name? if yes precede the current path with it...\r |
b1f95a06 | 819 | //\r |
820 | if (StrLen (FileInfo->FileName) == 0) {\r | |
46f43bc4 | 821 | if (*FullFileName == NULL) {\r |
a405b86d | 822 | ASSERT((*FullFileName == NULL && Size == 0) || (*FullFileName != NULL));\r |
46f43bc4 | 823 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, L"\\", 0);\r |
824 | }\r | |
b1f95a06 | 825 | FreePool(FileInfo);\r |
826 | break;\r | |
827 | } else {\r | |
46f43bc4 | 828 | if (*FullFileName == NULL) {\r |
a405b86d | 829 | ASSERT((*FullFileName == NULL && Size == 0) || (*FullFileName != NULL));\r |
46f43bc4 | 830 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, L"\\", 0);\r |
831 | }\r | |
a405b86d | 832 | ASSERT((*FullFileName == NULL && Size == 0) || (*FullFileName != NULL));\r |
b1f95a06 | 833 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, FileInfo->FileName, 0);\r |
46f43bc4 | 834 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, L"\\", 0);\r |
b1f95a06 | 835 | FreePool(FileInfo);\r |
836 | }\r | |
837 | }\r | |
838 | //\r | |
839 | // Move to the parent directory\r | |
840 | //\r | |
841 | Status = CurrentHandle->Open (CurrentHandle, &NextHigherHandle, L"..", EFI_FILE_MODE_READ, 0);\r | |
842 | if (EFI_ERROR (Status)) {\r | |
843 | break;\r | |
844 | }\r | |
845 | \r | |
846 | FileHandleClose(CurrentHandle);\r | |
847 | CurrentHandle = NextHigherHandle;\r | |
848 | }\r | |
a405b86d | 849 | } else if (Status == EFI_NOT_FOUND) {\r |
850 | Status = EFI_SUCCESS;\r | |
851 | ASSERT((*FullFileName == NULL && Size == 0) || (*FullFileName != NULL));\r | |
852 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, L"\\", 0);\r | |
b1f95a06 | 853 | }\r |
854 | \r | |
9095d37b LG |
855 | if (*FullFileName != NULL &&\r |
856 | (*FullFileName)[StrLen(*FullFileName) - 1] == L'\\' &&\r | |
ad6f6f86 QS |
857 | StrLen(*FullFileName) > 1 &&\r |
858 | FileHandleIsDirectory(Handle) == EFI_NOT_FOUND\r | |
859 | ) {\r | |
860 | (*FullFileName)[StrLen(*FullFileName) - 1] = CHAR_NULL;\r | |
861 | }\r | |
862 | \r | |
b1f95a06 | 863 | if (CurrentHandle != NULL) {\r |
864 | CurrentHandle->Close (CurrentHandle);\r | |
865 | }\r | |
866 | \r | |
867 | if (EFI_ERROR(Status) && *FullFileName != NULL) {\r | |
9eb53ac3 | 868 | FreePool(*FullFileName);\r |
b1f95a06 | 869 | }\r |
870 | \r | |
871 | return (Status);\r | |
872 | }\r | |
873 | \r | |
b3011f40 | 874 | /**\r |
a405b86d | 875 | Function to read a single line from a file. The \n is not included in the returned\r |
b3011f40 | 876 | buffer. The returned buffer must be callee freed.\r |
877 | \r | |
a405b86d | 878 | If the position upon start is 0, then the Ascii Boolean will be set. This should be\r |
b3011f40 | 879 | maintained and not changed for all operations with the same file.\r |
880 | \r | |
4ff7e37b ED |
881 | @param[in] Handle FileHandle to read from.\r |
882 | @param[in, out] Ascii Boolean value for indicating whether the file is Ascii (TRUE) or UCS2 (FALSE);\r | |
b3011f40 | 883 | \r |
884 | @return The line of text from the file.\r | |
885 | \r | |
886 | @sa FileHandleReadLine\r | |
887 | **/\r | |
888 | CHAR16*\r | |
889 | EFIAPI\r | |
890 | FileHandleReturnLine(\r | |
891 | IN EFI_FILE_HANDLE Handle,\r | |
892 | IN OUT BOOLEAN *Ascii\r | |
893 | )\r | |
894 | {\r | |
895 | CHAR16 *RetVal;\r | |
896 | UINTN Size;\r | |
897 | EFI_STATUS Status;\r | |
898 | \r | |
899 | Size = 0;\r | |
900 | RetVal = NULL;\r | |
901 | \r | |
902 | Status = FileHandleReadLine(Handle, RetVal, &Size, FALSE, Ascii);\r | |
903 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
4eb59be3 | 904 | RetVal = AllocateZeroPool(Size);\r |
b3011f40 | 905 | Status = FileHandleReadLine(Handle, RetVal, &Size, FALSE, Ascii);\r |
906 | }\r | |
907 | ASSERT_EFI_ERROR(Status);\r | |
908 | if (EFI_ERROR(Status) && (RetVal != NULL)) {\r | |
909 | FreePool(RetVal);\r | |
910 | RetVal = NULL;\r | |
911 | }\r | |
912 | return (RetVal);\r | |
913 | }\r | |
914 | \r | |
b1f95a06 | 915 | /**\r |
bfc2fc9e | 916 | Function to read a single line (up to but not including the \n) from a file.\r |
b1f95a06 | 917 | \r |
a405b86d | 918 | If the position upon start is 0, then the Ascii Boolean will be set. This should be\r |
b3011f40 | 919 | maintained and not changed for all operations with the same file.\r |
ba180625 QS |
920 | The function will not return the \r and \n character in buffer. When an empty line is\r |
921 | read a CHAR_NULL character will be returned in buffer.\r | |
b3011f40 | 922 | \r |
bfc2fc9e QS |
923 | @param[in] Handle FileHandle to read from.\r |
924 | @param[in, out] Buffer The pointer to buffer to read into.\r | |
925 | @param[in, out] Size The pointer to number of bytes in Buffer.\r | |
926 | @param[in] Truncate If the buffer is large enough, this has no effect.\r | |
927 | If the buffer is is too small and Truncate is TRUE,\r | |
928 | the line will be truncated.\r | |
929 | If the buffer is is too small and Truncate is FALSE,\r | |
930 | then no read will occur.\r | |
931 | \r | |
932 | @param[in, out] Ascii Boolean value for indicating whether the file is\r | |
933 | Ascii (TRUE) or UCS2 (FALSE).\r | |
934 | \r | |
935 | @retval EFI_SUCCESS The operation was successful. The line is stored in\r | |
b1f95a06 | 936 | Buffer.\r |
937 | @retval EFI_INVALID_PARAMETER Handle was NULL.\r | |
b1f95a06 | 938 | @retval EFI_INVALID_PARAMETER Size was NULL.\r |
bfc2fc9e QS |
939 | @retval EFI_BUFFER_TOO_SMALL Size was not large enough to store the line.\r |
940 | Size was updated to the minimum space required.\r | |
b1f95a06 | 941 | @sa FileHandleRead\r |
942 | **/\r | |
943 | EFI_STATUS\r | |
944 | EFIAPI\r | |
945 | FileHandleReadLine(\r | |
946 | IN EFI_FILE_HANDLE Handle,\r | |
b3011f40 | 947 | IN OUT CHAR16 *Buffer,\r |
b1f95a06 | 948 | IN OUT UINTN *Size,\r |
b3011f40 | 949 | IN BOOLEAN Truncate,\r |
950 | IN OUT BOOLEAN *Ascii\r | |
a405b86d | 951 | )\r |
952 | {\r | |
b1f95a06 | 953 | EFI_STATUS Status;\r |
954 | CHAR16 CharBuffer;\r | |
bfc2fc9e | 955 | UINT64 FileSize;\r |
b1f95a06 | 956 | UINTN CharSize;\r |
957 | UINTN CountSoFar;\r | |
ba180625 | 958 | UINTN CrCount;\r |
b3011f40 | 959 | UINT64 OriginalFilePosition;\r |
b1f95a06 | 960 | \r |
b1f95a06 | 961 | if (Handle == NULL\r |
b1f95a06 | 962 | ||Size == NULL\r |
183ecff5 | 963 | ||(Buffer==NULL&&*Size!=0)\r |
a405b86d | 964 | ){\r |
965 | return (EFI_INVALID_PARAMETER);\r | |
9095d37b LG |
966 | }\r |
967 | \r | |
ba180625 | 968 | if (Buffer != NULL && *Size != 0) {\r |
a405b86d | 969 | *Buffer = CHAR_NULL;\r |
9095d37b LG |
970 | }\r |
971 | \r | |
bfc2fc9e QS |
972 | Status = FileHandleGetSize (Handle, &FileSize);\r |
973 | if (EFI_ERROR (Status)) {\r | |
974 | return Status;\r | |
975 | } else if (FileSize == 0) {\r | |
ba180625 | 976 | *Ascii = TRUE;\r |
bfc2fc9e | 977 | return EFI_SUCCESS;\r |
9095d37b LG |
978 | }\r |
979 | \r | |
b3011f40 | 980 | FileHandleGetPosition(Handle, &OriginalFilePosition);\r |
981 | if (OriginalFilePosition == 0) {\r | |
982 | CharSize = sizeof(CHAR16);\r | |
983 | Status = FileHandleRead(Handle, &CharSize, &CharBuffer);\r | |
984 | ASSERT_EFI_ERROR(Status);\r | |
4eb59be3 | 985 | if (CharBuffer == gUnicodeFileTag) {\r |
b3011f40 | 986 | *Ascii = FALSE;\r |
987 | } else {\r | |
988 | *Ascii = TRUE;\r | |
989 | FileHandleSetPosition(Handle, OriginalFilePosition);\r | |
990 | }\r | |
991 | }\r | |
b1f95a06 | 992 | \r |
ba180625 | 993 | CrCount = 0;\r |
b1f95a06 | 994 | for (CountSoFar = 0;;CountSoFar++){\r |
b3011f40 | 995 | CharBuffer = 0;\r |
996 | if (*Ascii) {\r | |
997 | CharSize = sizeof(CHAR8);\r | |
998 | } else {\r | |
999 | CharSize = sizeof(CHAR16);\r | |
1000 | }\r | |
b1f95a06 | 1001 | Status = FileHandleRead(Handle, &CharSize, &CharBuffer);\r |
a405b86d | 1002 | if ( EFI_ERROR(Status)\r |
1003 | || CharSize == 0\r | |
1004 | || (CharBuffer == L'\n' && !(*Ascii))\r | |
1005 | || (CharBuffer == '\n' && *Ascii)\r | |
1006 | ){\r | |
b1f95a06 | 1007 | break;\r |
ba180625 QS |
1008 | } else if (\r |
1009 | (CharBuffer == L'\r' && !(*Ascii)) ||\r | |
1010 | (CharBuffer == '\r' && *Ascii)\r | |
1011 | ) {\r | |
1012 | CrCount++;\r | |
1013 | continue;\r | |
b1f95a06 | 1014 | }\r |
1015 | //\r | |
1016 | // if we have space save it...\r | |
1017 | //\r | |
ba180625 | 1018 | if ((CountSoFar+1-CrCount)*sizeof(CHAR16) < *Size){\r |
b3011f40 | 1019 | ASSERT(Buffer != NULL);\r |
ba180625 QS |
1020 | ((CHAR16*)Buffer)[CountSoFar-CrCount] = CharBuffer;\r |
1021 | ((CHAR16*)Buffer)[CountSoFar+1-CrCount] = CHAR_NULL;\r | |
b1f95a06 | 1022 | }\r |
1023 | }\r | |
1024 | \r | |
1025 | //\r | |
1026 | // if we ran out of space tell when...\r | |
1027 | //\r | |
ba180625 QS |
1028 | if ((CountSoFar+1-CrCount)*sizeof(CHAR16) > *Size){\r |
1029 | *Size = (CountSoFar+1-CrCount)*sizeof(CHAR16);\r | |
a405b86d | 1030 | if (!Truncate) {\r |
ba180625 QS |
1031 | if (Buffer != NULL && *Size != 0) {\r |
1032 | ZeroMem(Buffer, *Size);\r | |
1033 | }\r | |
b3011f40 | 1034 | FileHandleSetPosition(Handle, OriginalFilePosition);\r |
ba180625 | 1035 | return (EFI_BUFFER_TOO_SMALL);\r |
b1f95a06 | 1036 | } else {\r |
b3011f40 | 1037 | DEBUG((DEBUG_WARN, "The line was truncated in FileHandleReadLine"));\r |
ba180625 | 1038 | return (EFI_SUCCESS);\r |
b1f95a06 | 1039 | }\r |
b3011f40 | 1040 | }\r |
1041 | \r | |
b1f95a06 | 1042 | return (Status);\r |
1043 | }\r | |
1044 | \r | |
1045 | /**\r | |
a86c73cd | 1046 | Function to write a line of text to a file.\r |
9095d37b LG |
1047 | \r |
1048 | If the file is a Unicode file (with UNICODE file tag) then write the unicode\r | |
a86c73cd QS |
1049 | text.\r |
1050 | If the file is an ASCII file then write the ASCII text.\r | |
9095d37b | 1051 | If the size of file is zero (without file tag at the beginning) then write\r |
a86c73cd | 1052 | ASCII text as default.\r |
b1f95a06 | 1053 | \r |
b269f895 QS |
1054 | @param[in] Handle FileHandle to write to.\r |
1055 | @param[in] Buffer Buffer to write, if NULL the function will\r | |
1056 | take no action and return EFI_SUCCESS.\r | |
b1f95a06 | 1057 | \r |
b269f895 QS |
1058 | @retval EFI_SUCCESS The data was written.\r |
1059 | Buffer is NULL.\r | |
1060 | @retval EFI_INVALID_PARAMETER Handle is NULL.\r | |
9095d37b | 1061 | @retval EFI_OUT_OF_RESOURCES Unable to allocate temporary space for ASCII\r |
a86c73cd | 1062 | string due to out of resources.\r |
b1f95a06 | 1063 | \r |
1064 | @sa FileHandleWrite\r | |
1065 | **/\r | |
1066 | EFI_STATUS\r | |
1067 | EFIAPI\r | |
1068 | FileHandleWriteLine(\r | |
1069 | IN EFI_FILE_HANDLE Handle,\r | |
1070 | IN CHAR16 *Buffer\r | |
a405b86d | 1071 | )\r |
1072 | {\r | |
a86c73cd QS |
1073 | EFI_STATUS Status;\r |
1074 | CHAR16 CharBuffer;\r | |
1075 | UINTN Size;\r | |
1cdc35c4 | 1076 | UINTN Index;\r |
a86c73cd QS |
1077 | UINTN CharSize;\r |
1078 | UINT64 FileSize;\r | |
1079 | UINT64 OriginalFilePosition;\r | |
1080 | BOOLEAN Ascii;\r | |
1081 | CHAR8 *AsciiBuffer;\r | |
b1f95a06 | 1082 | \r |
b1f95a06 | 1083 | if (Buffer == NULL) {\r |
1084 | return (EFI_SUCCESS);\r | |
1085 | }\r | |
1086 | \r | |
183ecff5 JC |
1087 | if (Handle == NULL) {\r |
1088 | return (EFI_INVALID_PARAMETER);\r | |
1089 | }\r | |
9095d37b | 1090 | \r |
a86c73cd QS |
1091 | Ascii = FALSE;\r |
1092 | AsciiBuffer = NULL;\r | |
9095d37b | 1093 | \r |
a86c73cd | 1094 | Status = FileHandleGetPosition(Handle, &OriginalFilePosition);\r |
b1f95a06 | 1095 | if (EFI_ERROR(Status)) {\r |
a86c73cd QS |
1096 | return Status;\r |
1097 | }\r | |
9095d37b | 1098 | \r |
a86c73cd QS |
1099 | Status = FileHandleSetPosition(Handle, 0);\r |
1100 | if (EFI_ERROR(Status)) {\r | |
1101 | return Status;\r | |
b1f95a06 | 1102 | }\r |
9095d37b | 1103 | \r |
a86c73cd QS |
1104 | Status = FileHandleGetSize(Handle, &FileSize);\r |
1105 | if (EFI_ERROR(Status)) {\r | |
1106 | return Status;\r | |
1107 | }\r | |
9095d37b | 1108 | \r |
a86c73cd QS |
1109 | if (FileSize == 0) {\r |
1110 | Ascii = TRUE;\r | |
1111 | } else {\r | |
1112 | CharSize = sizeof (CHAR16);\r | |
1113 | Status = FileHandleRead (Handle, &CharSize, &CharBuffer);\r | |
1114 | ASSERT_EFI_ERROR (Status);\r | |
1115 | if (CharBuffer == gUnicodeFileTag) {\r | |
1116 | Ascii = FALSE;\r | |
1117 | } else {\r | |
1118 | Ascii = TRUE;\r | |
1119 | }\r | |
1120 | }\r | |
9095d37b | 1121 | \r |
a86c73cd QS |
1122 | Status = FileHandleSetPosition(Handle, OriginalFilePosition);\r |
1123 | if (EFI_ERROR(Status)) {\r | |
1124 | return Status;\r | |
1125 | }\r | |
9095d37b | 1126 | \r |
a86c73cd QS |
1127 | if (Ascii) {\r |
1128 | Size = ( StrSize(Buffer) / sizeof(CHAR16) ) * sizeof(CHAR8);\r | |
1129 | AsciiBuffer = (CHAR8 *)AllocateZeroPool(Size);\r | |
1130 | if (AsciiBuffer == NULL) {\r | |
1131 | return EFI_OUT_OF_RESOURCES;\r | |
1132 | }\r | |
ca2ac9d5 | 1133 | UnicodeStrToAsciiStrS (Buffer, AsciiBuffer, Size);\r |
1cdc35c4 | 1134 | for (Index = 0; Index < Size; Index++) {\r |
fbda8a34 | 1135 | if ((AsciiBuffer[Index] & BIT7) != 0) {\r |
1cdc35c4 QS |
1136 | FreePool(AsciiBuffer);\r |
1137 | return EFI_INVALID_PARAMETER;\r | |
1138 | }\r | |
1139 | }\r | |
9095d37b | 1140 | \r |
a86c73cd QS |
1141 | Size = AsciiStrSize(AsciiBuffer) - sizeof(CHAR8);\r |
1142 | Status = FileHandleWrite(Handle, &Size, AsciiBuffer);\r | |
1143 | if (EFI_ERROR(Status)) {\r | |
1144 | FreePool (AsciiBuffer);\r | |
1145 | return (Status);\r | |
1146 | }\r | |
1147 | Size = AsciiStrSize("\r\n") - sizeof(CHAR8);\r | |
1148 | Status = FileHandleWrite(Handle, &Size, "\r\n");\r | |
1149 | } else {\r | |
1150 | if (OriginalFilePosition == 0) {\r | |
1151 | Status = FileHandleSetPosition (Handle, sizeof(CHAR16));\r | |
1152 | if (EFI_ERROR(Status)) {\r | |
1153 | return Status;\r | |
1154 | }\r | |
1155 | }\r | |
1156 | Size = StrSize(Buffer) - sizeof(CHAR16);\r | |
1157 | Status = FileHandleWrite(Handle, &Size, Buffer);\r | |
1158 | if (EFI_ERROR(Status)) {\r | |
1159 | return (Status);\r | |
1160 | }\r | |
1161 | Size = StrSize(L"\r\n") - sizeof(CHAR16);\r | |
1162 | Status = FileHandleWrite(Handle, &Size, L"\r\n");\r | |
1163 | }\r | |
9095d37b | 1164 | \r |
a86c73cd QS |
1165 | if (AsciiBuffer != NULL) {\r |
1166 | FreePool (AsciiBuffer);\r | |
1167 | }\r | |
1168 | return Status;\r | |
b1f95a06 | 1169 | }\r |
b3011f40 | 1170 | \r |
1171 | /**\r | |
1172 | function to take a formatted argument and print it to a file.\r | |
1173 | \r | |
1174 | @param[in] Handle the file handle for the file to write to\r | |
1175 | @param[in] Format the format argument (see printlib for format specifier)\r | |
1176 | @param[in] ... the variable arguments for the format\r | |
1177 | \r | |
3868d06d | 1178 | @retval EFI_SUCCESS the operation was successful\r |
b3011f40 | 1179 | @return other a return value from FileHandleWriteLine\r |
1180 | \r | |
1181 | @sa FileHandleWriteLine\r | |
1182 | **/\r | |
1183 | EFI_STATUS\r | |
1184 | EFIAPI\r | |
1185 | FileHandlePrintLine(\r | |
1186 | IN EFI_FILE_HANDLE Handle,\r | |
1187 | IN CONST CHAR16 *Format,\r | |
1188 | ...\r | |
1189 | )\r | |
1190 | {\r | |
1191 | VA_LIST Marker;\r | |
1192 | CHAR16 *Buffer;\r | |
1193 | EFI_STATUS Status;\r | |
1194 | \r | |
b3011f40 | 1195 | //\r |
1196 | // Get a buffer to print into\r | |
1197 | //\r | |
ae591c14 | 1198 | Buffer = AllocateZeroPool (PcdGet16 (PcdUefiFileHandleLibPrintBufferSize));\r |
183ecff5 JC |
1199 | if (Buffer == NULL) {\r |
1200 | return (EFI_OUT_OF_RESOURCES);\r | |
1201 | }\r | |
b3011f40 | 1202 | \r |
1203 | //\r | |
1204 | // Print into our buffer\r | |
1205 | //\r | |
3bbe68a3 | 1206 | VA_START (Marker, Format);\r |
ae591c14 | 1207 | UnicodeVSPrint (Buffer, PcdGet16 (PcdUefiFileHandleLibPrintBufferSize), Format, Marker);\r |
3bbe68a3 | 1208 | VA_END (Marker);\r |
b3011f40 | 1209 | \r |
1210 | //\r | |
1211 | // Print buffer into file\r | |
1212 | //\r | |
1213 | Status = FileHandleWriteLine(Handle, Buffer);\r | |
1214 | \r | |
1215 | //\r | |
a405b86d | 1216 | // Cleanup and return\r |
b3011f40 | 1217 | //\r |
1218 | FreePool(Buffer);\r | |
1219 | return (Status);\r | |
1220 | }\r | |
1221 | \r | |
1222 | /**\r | |
1223 | Function to determine if a FILE_HANDLE is at the end of the file.\r | |
1224 | \r | |
1225 | This will NOT work on directories.\r | |
1226 | \r | |
183ecff5 | 1227 | If Handle is NULL, then return False.\r |
b3011f40 | 1228 | \r |
1229 | @param[in] Handle the file handle\r | |
1230 | \r | |
1231 | @retval TRUE the position is at the end of the file\r | |
1232 | @retval FALSE the position is not at the end of the file\r | |
1233 | **/\r | |
1234 | BOOLEAN\r | |
1235 | EFIAPI\r | |
1236 | FileHandleEof(\r | |
1237 | IN EFI_FILE_HANDLE Handle\r | |
1238 | )\r | |
1239 | {\r | |
1240 | EFI_FILE_INFO *Info;\r | |
1241 | UINT64 Pos;\r | |
1242 | BOOLEAN RetVal;\r | |
1243 | \r | |
183ecff5 JC |
1244 | if (Handle == NULL) {\r |
1245 | return (FALSE);\r | |
1246 | }\r | |
a405b86d | 1247 | \r |
b3011f40 | 1248 | FileHandleGetPosition(Handle, &Pos);\r |
1249 | Info = FileHandleGetInfo (Handle);\r | |
a405b86d | 1250 | \r |
b3011f40 | 1251 | if (Info == NULL) {\r |
1252 | return (FALSE);\r | |
a405b86d | 1253 | }\r |
b3011f40 | 1254 | \r |
183ecff5 JC |
1255 | FileHandleSetPosition(Handle, Pos);\r |
1256 | \r | |
d54744cd | 1257 | if (Pos == Info->FileSize) {\r |
1258 | RetVal = TRUE;\r | |
1259 | } else {\r | |
1260 | RetVal = FALSE;\r | |
1261 | }\r | |
b3011f40 | 1262 | \r |
1263 | FreePool (Info);\r | |
1264 | \r | |
1265 | return (RetVal);\r | |
22d11953 | 1266 | }\r |