| | 1 | /** @file\r |
| | 2 | Provides interface to EFI_FILE_HANDLE functionality.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved. <BR>\r |
| | 5 | This program and the accompanying materials\r |
| | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
| | 7 | which accompanies this distribution. The full text of the license may be found at\r |
| | 8 | http://opensource.org/licenses/bsd-license.php\r |
| | 9 | \r |
| | 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| | 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| | 12 | \r |
| | 13 | **/\r |
| | 14 | \r |
| | 15 | #include <Uefi.h>\r |
| | 16 | \r |
| | 17 | #include <Protocol/SimpleFileSystem.h>\r |
| | 18 | #include <Protocol/UnicodeCollation.h>\r |
| | 19 | \r |
| | 20 | #include <Guid/FileInfo.h>\r |
| | 21 | \r |
| | 22 | #include <Library/DebugLib.h>\r |
| | 23 | #include <Library/MemoryAllocationLib.h>\r |
| | 24 | #include <Library/BaseLib.h>\r |
| | 25 | #include <Library/BaseMemoryLib.h>\r |
| | 26 | #include <Library/FileHandleLib.h>\r |
| | 27 | #include <Library/PcdLib.h>\r |
| | 28 | #include <Library/PrintLib.h>\r |
| | 29 | \r |
| | 30 | CONST UINT16 gUnicodeFileTag = EFI_UNICODE_BYTE_ORDER_MARK;\r |
| | 31 | \r |
| | 32 | #define MAX_FILE_NAME_LEN 522 // (20 * (6+5+2))+1) unicode characters from EFI FAT spec (doubled for bytes)\r |
| | 33 | #define FIND_XXXXX_FILE_BUFFER_SIZE (SIZE_OF_EFI_FILE_INFO + MAX_FILE_NAME_LEN)\r |
| | 34 | \r |
| | 35 | /**\r |
| | 36 | This function will retrieve the information about the file for the handle\r |
| | 37 | specified and store it in allocated pool memory.\r |
| | 38 | \r |
| | 39 | This function allocates a buffer to store the file's information. It is the\r |
| | 40 | caller's responsibility to free the buffer\r |
| | 41 | \r |
| | 42 | @param FileHandle The file handle of the file for which information is\r |
| | 43 | being requested.\r |
| | 44 | \r |
| | 45 | @retval NULL information could not be retrieved.\r |
| | 46 | \r |
| | 47 | @return the information about the file\r |
| | 48 | **/\r |
| | 49 | EFI_FILE_INFO*\r |
| | 50 | EFIAPI\r |
| | 51 | FileHandleGetInfo (\r |
| | 52 | IN EFI_FILE_HANDLE FileHandle\r |
| | 53 | )\r |
| | 54 | {\r |
| | 55 | EFI_FILE_INFO *FileInfo;\r |
| | 56 | UINTN FileInfoSize;\r |
| | 57 | EFI_STATUS Status;\r |
| | 58 | \r |
| | 59 | if (FileHandle == NULL) {\r |
| | 60 | return (NULL);\r |
| | 61 | }\r |
| | 62 | \r |
| | 63 | //\r |
| | 64 | // Get the required size to allocate\r |
| | 65 | //\r |
| | 66 | FileInfoSize = 0;\r |
| | 67 | FileInfo = NULL;\r |
| | 68 | Status = FileHandle->GetInfo(FileHandle,\r |
| | 69 | &gEfiFileInfoGuid,\r |
| | 70 | &FileInfoSize,\r |
| | 71 | NULL);\r |
| | 72 | if (Status == EFI_BUFFER_TOO_SMALL){\r |
| | 73 | //\r |
| | 74 | // error is expected. getting size to allocate\r |
| | 75 | //\r |
| | 76 | FileInfo = AllocateZeroPool(FileInfoSize);\r |
| | 77 | //\r |
| | 78 | // now get the information\r |
| | 79 | //\r |
| | 80 | Status = FileHandle->GetInfo(FileHandle,\r |
| | 81 | &gEfiFileInfoGuid,\r |
| | 82 | &FileInfoSize,\r |
| | 83 | FileInfo);\r |
| | 84 | //\r |
| | 85 | // if we got an error free the memory and return NULL\r |
| | 86 | //\r |
| | 87 | if (EFI_ERROR(Status)) {\r |
| | 88 | FreePool(FileInfo);\r |
| | 89 | return NULL;\r |
| | 90 | }\r |
| | 91 | }\r |
| | 92 | return (FileInfo);\r |
| | 93 | }\r |
| | 94 | \r |
| | 95 | /**\r |
| | 96 | This function sets the information about the file for the opened handle\r |
| | 97 | specified.\r |
| | 98 | \r |
| | 99 | @param[in] FileHandle The file handle of the file for which information\r |
| | 100 | is being set.\r |
| | 101 | \r |
| | 102 | @param[in] FileInfo The information to set.\r |
| | 103 | \r |
| | 104 | @retval EFI_SUCCESS The information was set.\r |
| | 105 | @retval EFI_INVALID_PARAMETER A parameter was out of range or invalid.\r |
| | 106 | @retval EFI_UNSUPPORTED The FileHandle does not support FileInfo.\r |
| | 107 | @retval EFI_NO_MEDIA The device has no medium.\r |
| | 108 | @retval EFI_DEVICE_ERROR The device reported an error.\r |
| | 109 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r |
| | 110 | @retval EFI_WRITE_PROTECTED The file or medium is write protected.\r |
| | 111 | @retval EFI_ACCESS_DENIED The file was opened read only.\r |
| | 112 | @retval EFI_VOLUME_FULL The volume is full.\r |
| | 113 | **/\r |
| | 114 | EFI_STATUS\r |
| | 115 | EFIAPI\r |
| | 116 | FileHandleSetInfo (\r |
| | 117 | IN EFI_FILE_HANDLE FileHandle,\r |
| | 118 | IN CONST EFI_FILE_INFO *FileInfo\r |
| | 119 | )\r |
| | 120 | {\r |
| | 121 | \r |
| | 122 | //\r |
| | 123 | // ASSERT if the FileHandle or FileInfo is NULL\r |
| | 124 | //\r |
| | 125 | ASSERT (FileHandle != NULL);\r |
| | 126 | ASSERT (FileInfo != NULL);\r |
| | 127 | \r |
| | 128 | //\r |
| | 129 | // Set the info\r |
| | 130 | //\r |
| | 131 | return (FileHandle->SetInfo(FileHandle,\r |
| | 132 | &gEfiFileInfoGuid,\r |
| | 133 | (UINTN)FileInfo->Size,\r |
| | 134 | (EFI_FILE_INFO*)FileInfo));\r |
| | 135 | }\r |
| | 136 | \r |
| | 137 | /**\r |
| | 138 | This function reads information from an opened file.\r |
| | 139 | \r |
| | 140 | If FileHandle is not a directory, the function reads the requested number of\r |
| | 141 | bytes from the file at the file's current position and returns them in Buffer.\r |
| | 142 | If the read goes beyond the end of the file, the read length is truncated to the\r |
| | 143 | end of the file. The file's current position is increased by the number of bytes\r |
| | 144 | returned. If FileHandle is a directory, the function reads the directory entry\r |
| | 145 | at the file's current position and returns the entry in Buffer. If the Buffer\r |
| | 146 | is not large enough to hold the current directory entry, then\r |
| | 147 | EFI_BUFFER_TOO_SMALL is returned and the current file position is not updated.\r |
| | 148 | BufferSize is set to be the size of the buffer needed to read the entry. On\r |
| | 149 | success, the current position is updated to the next directory entry. If there\r |
| | 150 | are no more directory entries, the read returns a zero-length buffer.\r |
| | 151 | EFI_FILE_INFO is the structure returned as the directory entry.\r |
| | 152 | \r |
| | 153 | @param FileHandle the opened file handle\r |
| | 154 | @param BufferSize on input the size of buffer in bytes. on return\r |
| | 155 | the number of bytes written.\r |
| | 156 | @param Buffer the buffer to put read data into.\r |
| | 157 | \r |
| | 158 | @retval EFI_SUCCESS Data was read.\r |
| | 159 | @retval EFI_NO_MEDIA The device has no media.\r |
| | 160 | @retval EFI_DEVICE_ERROR The device reported an error.\r |
| | 161 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r |
| | 162 | @retval EFI_BUFFER_TO_SMALL Buffer is too small. ReadSize contains required\r |
| | 163 | size.\r |
| | 164 | \r |
| | 165 | **/\r |
| | 166 | EFI_STATUS\r |
| | 167 | EFIAPI\r |
| | 168 | FileHandleRead(\r |
| | 169 | IN EFI_FILE_HANDLE FileHandle,\r |
| | 170 | IN OUT UINTN *BufferSize,\r |
| | 171 | OUT VOID *Buffer\r |
| | 172 | )\r |
| | 173 | {\r |
| | 174 | //\r |
| | 175 | // ASSERT if FileHandle is NULL\r |
| | 176 | //\r |
| | 177 | ASSERT (FileHandle != NULL);\r |
| | 178 | \r |
| | 179 | //\r |
| | 180 | // Perform the read based on EFI_FILE_PROTOCOL\r |
| | 181 | //\r |
| | 182 | return (FileHandle->Read(FileHandle, BufferSize, Buffer));\r |
| | 183 | }\r |
| | 184 | \r |
| | 185 | \r |
| | 186 | /**\r |
| | 187 | Write data to a file.\r |
| | 188 | \r |
| | 189 | This function writes the specified number of bytes to the file at the current\r |
| | 190 | file position. The current file position is advanced the actual number of bytes\r |
| | 191 | written, which is returned in BufferSize. Partial writes only occur when there\r |
| | 192 | has been a data error during the write attempt (such as "volume space full").\r |
| | 193 | The file is automatically grown to hold the data if required. Direct writes to\r |
| | 194 | opened directories are not supported.\r |
| | 195 | \r |
| | 196 | @param FileHandle The opened file for writing\r |
| | 197 | @param BufferSize on input the number of bytes in Buffer. On output\r |
| | 198 | the number of bytes written.\r |
| | 199 | @param Buffer the buffer containing data to write is stored.\r |
| | 200 | \r |
| | 201 | @retval EFI_SUCCESS Data was written.\r |
| | 202 | @retval EFI_UNSUPPORTED Writes to an open directory are not supported.\r |
| | 203 | @retval EFI_NO_MEDIA The device has no media.\r |
| | 204 | @retval EFI_DEVICE_ERROR The device reported an error.\r |
| | 205 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r |
| | 206 | @retval EFI_WRITE_PROTECTED The device is write-protected.\r |
| | 207 | @retval EFI_ACCESS_DENIED The file was open for read only.\r |
| | 208 | @retval EFI_VOLUME_FULL The volume is full.\r |
| | 209 | **/\r |
| | 210 | EFI_STATUS\r |
| | 211 | EFIAPI\r |
| | 212 | FileHandleWrite(\r |
| | 213 | IN EFI_FILE_HANDLE FileHandle,\r |
| | 214 | IN OUT UINTN *BufferSize,\r |
| | 215 | IN VOID *Buffer\r |
| | 216 | )\r |
| | 217 | {\r |
| | 218 | //\r |
| | 219 | // ASSERT if FileHandle is NULL\r |
| | 220 | //\r |
| | 221 | ASSERT (FileHandle != NULL);\r |
| | 222 | //\r |
| | 223 | // Perform the write based on EFI_FILE_PROTOCOL\r |
| | 224 | //\r |
| | 225 | return (FileHandle->Write(FileHandle, BufferSize, Buffer));\r |
| | 226 | }\r |
| | 227 | \r |
| | 228 | /**\r |
| | 229 | Close an open file handle.\r |
| | 230 | \r |
| | 231 | This function closes a specified file handle. All "dirty" cached file data is\r |
| | 232 | flushed to the device, and the file is closed. In all cases the handle is\r |
| | 233 | closed.\r |
| | 234 | \r |
| | 235 | @param FileHandle the file handle to close.\r |
| | 236 | \r |
| | 237 | @retval EFI_SUCCESS the file handle was closed sucessfully.\r |
| | 238 | **/\r |
| | 239 | EFI_STATUS\r |
| | 240 | EFIAPI\r |
| | 241 | FileHandleClose (\r |
| | 242 | IN EFI_FILE_HANDLE FileHandle\r |
| | 243 | )\r |
| | 244 | {\r |
| | 245 | EFI_STATUS Status;\r |
| | 246 | //\r |
| | 247 | // ASSERT if FileHandle is NULL\r |
| | 248 | //\r |
| | 249 | ASSERT (FileHandle != NULL);\r |
| | 250 | //\r |
| | 251 | // Perform the Close based on EFI_FILE_PROTOCOL\r |
| | 252 | //\r |
| | 253 | Status = FileHandle->Close(FileHandle);\r |
| | 254 | return Status;\r |
| | 255 | }\r |
| | 256 | \r |
| | 257 | /**\r |
| | 258 | Delete a file and close the handle\r |
| | 259 | \r |
| | 260 | This function closes and deletes a file. In all cases the file handle is closed.\r |
| | 261 | If the file cannot be deleted, the warning code EFI_WARN_DELETE_FAILURE is\r |
| | 262 | returned, but the handle is still closed.\r |
| | 263 | \r |
| | 264 | @param FileHandle the file handle to delete\r |
| | 265 | \r |
| | 266 | @retval EFI_SUCCESS the file was closed sucessfully\r |
| | 267 | @retval EFI_WARN_DELETE_FAILURE the handle was closed, but the file was not\r |
| | 268 | deleted\r |
| | 269 | @retval INVALID_PARAMETER One of the parameters has an invalid value.\r |
| | 270 | **/\r |
| | 271 | EFI_STATUS\r |
| | 272 | EFIAPI\r |
| | 273 | FileHandleDelete (\r |
| | 274 | IN EFI_FILE_HANDLE FileHandle\r |
| | 275 | )\r |
| | 276 | {\r |
| | 277 | EFI_STATUS Status;\r |
| | 278 | //\r |
| | 279 | // ASSERT if FileHandle is NULL\r |
| | 280 | //\r |
| | 281 | ASSERT (FileHandle != NULL);\r |
| | 282 | //\r |
| | 283 | // Perform the Delete based on EFI_FILE_PROTOCOL\r |
| | 284 | //\r |
| | 285 | Status = FileHandle->Delete(FileHandle);\r |
| | 286 | return Status;\r |
| | 287 | }\r |
| | 288 | \r |
| | 289 | /**\r |
| | 290 | Set the current position in a file.\r |
| | 291 | \r |
| | 292 | This function sets the current file position for the handle to the position\r |
| | 293 | supplied. With the exception of seeking to position 0xFFFFFFFFFFFFFFFF, only\r |
| | 294 | absolute positioning is supported, and seeking past the end of the file is\r |
| | 295 | allowed (a subsequent write would grow the file). Seeking to position\r |
| | 296 | 0xFFFFFFFFFFFFFFFF causes the current position to be set to the end of the file.\r |
| | 297 | If FileHandle is a directory, the only position that may be set is zero. This\r |
| | 298 | has the effect of starting the read process of the directory entries over.\r |
| | 299 | \r |
| | 300 | @param FileHandle The file handle on which the position is being set\r |
| | 301 | @param Position Byte position from begining of file\r |
| | 302 | \r |
| | 303 | @retval EFI_SUCCESS Operation completed sucessfully.\r |
| | 304 | @retval EFI_UNSUPPORTED the seek request for non-zero is not valid on\r |
| | 305 | directories.\r |
| | 306 | @retval INVALID_PARAMETER One of the parameters has an invalid value.\r |
| | 307 | **/\r |
| | 308 | EFI_STATUS\r |
| | 309 | EFIAPI\r |
| | 310 | FileHandleSetPosition (\r |
| | 311 | IN EFI_FILE_HANDLE FileHandle,\r |
| | 312 | IN UINT64 Position\r |
| | 313 | )\r |
| | 314 | {\r |
| | 315 | //\r |
| | 316 | // ASSERT if FileHandle is NULL\r |
| | 317 | //\r |
| | 318 | ASSERT (FileHandle != NULL);\r |
| | 319 | //\r |
| | 320 | // Perform the SetPosition based on EFI_FILE_PROTOCOL\r |
| | 321 | //\r |
| | 322 | return (FileHandle->SetPosition(FileHandle, Position));\r |
| | 323 | }\r |
| | 324 | \r |
| | 325 | /**\r |
| | 326 | Gets a file's current position\r |
| | 327 | \r |
| | 328 | This function retrieves the current file position for the file handle. For\r |
| | 329 | directories, the current file position has no meaning outside of the file\r |
| | 330 | system driver and as such the operation is not supported. An error is returned\r |
| | 331 | if FileHandle is a directory.\r |
| | 332 | \r |
| | 333 | @param FileHandle The open file handle on which to get the position.\r |
| | 334 | @param Position Byte position from begining of file.\r |
| | 335 | \r |
| | 336 | @retval EFI_SUCCESS the operation completed sucessfully.\r |
| | 337 | @retval INVALID_PARAMETER One of the parameters has an invalid value.\r |
| | 338 | @retval EFI_UNSUPPORTED the request is not valid on directories.\r |
| | 339 | **/\r |
| | 340 | EFI_STATUS\r |
| | 341 | EFIAPI\r |
| | 342 | FileHandleGetPosition (\r |
| | 343 | IN EFI_FILE_HANDLE FileHandle,\r |
| | 344 | OUT UINT64 *Position\r |
| | 345 | )\r |
| | 346 | {\r |
| | 347 | if (Position == NULL) {\r |
| | 348 | return (EFI_INVALID_PARAMETER);\r |
| | 349 | }\r |
| | 350 | //\r |
| | 351 | // ASSERT if FileHandle is NULL\r |
| | 352 | //\r |
| | 353 | ASSERT (FileHandle != NULL);\r |
| | 354 | //\r |
| | 355 | // Perform the GetPosition based on EFI_FILE_PROTOCOL\r |
| | 356 | //\r |
| | 357 | return (FileHandle->GetPosition(FileHandle, Position));\r |
| | 358 | }\r |
| | 359 | /**\r |
| | 360 | Flushes data on a file\r |
| | 361 | \r |
| | 362 | This function flushes all modified data associated with a file to a device.\r |
| | 363 | \r |
| | 364 | @param FileHandle The file handle on which to flush data\r |
| | 365 | \r |
| | 366 | @retval EFI_SUCCESS The data was flushed.\r |
| | 367 | @retval EFI_NO_MEDIA The device has no media.\r |
| | 368 | @retval EFI_DEVICE_ERROR The device reported an error.\r |
| | 369 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r |
| | 370 | @retval EFI_WRITE_PROTECTED The file or medium is write protected.\r |
| | 371 | @retval EFI_ACCESS_DENIED The file was opened for read only.\r |
| | 372 | **/\r |
| | 373 | EFI_STATUS\r |
| | 374 | EFIAPI\r |
| | 375 | FileHandleFlush (\r |
| | 376 | IN EFI_FILE_HANDLE FileHandle\r |
| | 377 | )\r |
| | 378 | {\r |
| | 379 | //\r |
| | 380 | // ASSERT if FileHandle is NULL\r |
| | 381 | //\r |
| | 382 | ASSERT (FileHandle != NULL);\r |
| | 383 | //\r |
| | 384 | // Perform the Flush based on EFI_FILE_PROTOCOL\r |
| | 385 | //\r |
| | 386 | return (FileHandle->Flush(FileHandle));\r |
| | 387 | }\r |
| | 388 | \r |
| | 389 | /**\r |
| | 390 | function to determine if a given handle is a directory handle\r |
| | 391 | \r |
| | 392 | if DirHandle is NULL then ASSERT()\r |
| | 393 | \r |
| | 394 | open the file information on the DirHandle and verify that the Attribute\r |
| | 395 | includes EFI_FILE_DIRECTORY bit set.\r |
| | 396 | \r |
| | 397 | @param DirHandle Handle to open file\r |
| | 398 | \r |
| | 399 | @retval EFI_SUCCESS DirHandle is a directory\r |
| | 400 | @retval EFI_INVALID_PARAMETER DirHandle did not have EFI_FILE_INFO available\r |
| | 401 | @retval EFI_NOT_FOUND DirHandle is not a directory\r |
| | 402 | **/\r |
| | 403 | EFI_STATUS\r |
| | 404 | EFIAPI\r |
| | 405 | FileHandleIsDirectory (\r |
| | 406 | IN EFI_FILE_HANDLE DirHandle\r |
| | 407 | )\r |
| | 408 | {\r |
| | 409 | EFI_FILE_INFO *DirInfo;\r |
| | 410 | \r |
| | 411 | //\r |
| | 412 | // ASSERT if DirHandle is NULL\r |
| | 413 | //\r |
| | 414 | ASSERT(DirHandle != NULL);\r |
| | 415 | \r |
| | 416 | //\r |
| | 417 | // get the file information for DirHandle\r |
| | 418 | //\r |
| | 419 | DirInfo = FileHandleGetInfo (DirHandle);\r |
| | 420 | \r |
| | 421 | //\r |
| | 422 | // Parse DirInfo\r |
| | 423 | //\r |
| | 424 | if (DirInfo == NULL) {\r |
| | 425 | //\r |
| | 426 | // We got nothing...\r |
| | 427 | //\r |
| | 428 | return (EFI_INVALID_PARAMETER);\r |
| | 429 | }\r |
| | 430 | if ((DirInfo->Attribute & EFI_FILE_DIRECTORY) == 0) {\r |
| | 431 | //\r |
| | 432 | // Attributes say this is not a directory\r |
| | 433 | //\r |
| | 434 | FreePool (DirInfo);\r |
| | 435 | return (EFI_NOT_FOUND);\r |
| | 436 | }\r |
| | 437 | //\r |
| | 438 | // all good...\r |
| | 439 | //\r |
| | 440 | FreePool (DirInfo);\r |
| | 441 | return (EFI_SUCCESS);\r |
| | 442 | }\r |
| | 443 | \r |
| | 444 | /**\r |
| | 445 | Retrieves the first file from a directory\r |
| | 446 | \r |
| | 447 | This function opens a directory and gets the first file's info in the\r |
| | 448 | directory. Caller can use FileHandleFindNextFile() to get other files. When\r |
| | 449 | complete the caller is responsible for calling FreePool() on Buffer.\r |
| | 450 | \r |
| | 451 | @param DirHandle The file handle of the directory to search\r |
| | 452 | @param Buffer Pointer to buffer for file's information\r |
| | 453 | \r |
| | 454 | @retval EFI_SUCCESS Found the first file.\r |
| | 455 | @retval EFI_NOT_FOUND Cannot find the directory.\r |
| | 456 | @retval EFI_NO_MEDIA The device has no media.\r |
| | 457 | @retval EFI_DEVICE_ERROR The device reported an error.\r |
| | 458 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r |
| | 459 | @return Others status of FileHandleGetInfo, FileHandleSetPosition,\r |
| | 460 | or FileHandleRead\r |
| | 461 | **/\r |
| | 462 | EFI_STATUS\r |
| | 463 | EFIAPI\r |
| | 464 | FileHandleFindFirstFile (\r |
| | 465 | IN EFI_FILE_HANDLE DirHandle,\r |
| | 466 | OUT EFI_FILE_INFO **Buffer\r |
| | 467 | )\r |
| | 468 | {\r |
| | 469 | EFI_STATUS Status;\r |
| | 470 | UINTN BufferSize;\r |
| | 471 | \r |
| | 472 | if (Buffer == NULL || DirHandle == NULL) {\r |
| | 473 | return (EFI_INVALID_PARAMETER);\r |
| | 474 | }\r |
| | 475 | \r |
| | 476 | //\r |
| | 477 | // verify that DirHandle is a directory\r |
| | 478 | //\r |
| | 479 | Status = FileHandleIsDirectory(DirHandle);\r |
| | 480 | if (EFI_ERROR(Status)) {\r |
| | 481 | return (Status);\r |
| | 482 | }\r |
| | 483 | \r |
| | 484 | //\r |
| | 485 | // Allocate a buffer sized to struct size + enough for the string at the end\r |
| | 486 | //\r |
| | 487 | BufferSize = FIND_XXXXX_FILE_BUFFER_SIZE;\r |
| | 488 | *Buffer = AllocateZeroPool(BufferSize);\r |
| | 489 | if (*Buffer == NULL){\r |
| | 490 | return (EFI_OUT_OF_RESOURCES);\r |
| | 491 | }\r |
| | 492 | \r |
| | 493 | //\r |
| | 494 | // reset to the begining of the directory\r |
| | 495 | //\r |
| | 496 | Status = FileHandleSetPosition(DirHandle, 0);\r |
| | 497 | if (EFI_ERROR(Status)) {\r |
| | 498 | FreePool(*Buffer);\r |
| | 499 | *Buffer = NULL;\r |
| | 500 | return (Status);\r |
| | 501 | }\r |
| | 502 | \r |
| | 503 | //\r |
| | 504 | // read in the info about the first file\r |
| | 505 | //\r |
| | 506 | Status = FileHandleRead (DirHandle, &BufferSize, *Buffer);\r |
| | 507 | ASSERT(Status != EFI_BUFFER_TOO_SMALL);\r |
| | 508 | if (EFI_ERROR(Status)) {\r |
| | 509 | FreePool(*Buffer);\r |
| | 510 | *Buffer = NULL;\r |
| | 511 | return (Status);\r |
| | 512 | }\r |
| | 513 | return (EFI_SUCCESS);\r |
| | 514 | }\r |
| | 515 | /**\r |
| | 516 | Retrieves the next file in a directory.\r |
| | 517 | \r |
| | 518 | To use this function, caller must call the FileHandleFindFirstFile() to get the\r |
| | 519 | first file, and then use this function get other files. This function can be\r |
| | 520 | called for several times to get each file's information in the directory. If\r |
| | 521 | the call of FileHandleFindNextFile() got the last file in the directory, the next\r |
| | 522 | call of this function has no file to get. *NoFile will be set to TRUE and the\r |
| | 523 | Buffer memory will be automatically freed.\r |
| | 524 | \r |
| | 525 | @param DirHandle the file handle of the directory\r |
| | 526 | @param Buffer pointer to buffer for file's information\r |
| | 527 | @param NoFile pointer to boolean when last file is found\r |
| | 528 | \r |
| | 529 | @retval EFI_SUCCESS Found the next file, or reached last file\r |
| | 530 | @retval EFI_NO_MEDIA The device has no media.\r |
| | 531 | @retval EFI_DEVICE_ERROR The device reported an error.\r |
| | 532 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r |
| | 533 | **/\r |
| | 534 | EFI_STATUS\r |
| | 535 | EFIAPI\r |
| | 536 | FileHandleFindNextFile(\r |
| | 537 | IN EFI_FILE_HANDLE DirHandle,\r |
| | 538 | OUT EFI_FILE_INFO *Buffer,\r |
| | 539 | OUT BOOLEAN *NoFile\r |
| | 540 | )\r |
| | 541 | {\r |
| | 542 | EFI_STATUS Status;\r |
| | 543 | UINTN BufferSize;\r |
| | 544 | \r |
| | 545 | //\r |
| | 546 | // ASSERTs for DirHandle or Buffer or NoFile poitners being NULL\r |
| | 547 | //\r |
| | 548 | ASSERT (DirHandle != NULL);\r |
| | 549 | ASSERT (Buffer != NULL);\r |
| | 550 | ASSERT (NoFile != NULL);\r |
| | 551 | \r |
| | 552 | //\r |
| | 553 | // This BufferSize MUST stay equal to the originally allocated one in GetFirstFile\r |
| | 554 | //\r |
| | 555 | BufferSize = FIND_XXXXX_FILE_BUFFER_SIZE;\r |
| | 556 | \r |
| | 557 | //\r |
| | 558 | // read in the info about the next file\r |
| | 559 | //\r |
| | 560 | Status = FileHandleRead (DirHandle, &BufferSize, Buffer);\r |
| | 561 | ASSERT(Status != EFI_BUFFER_TOO_SMALL);\r |
| | 562 | if (EFI_ERROR(Status)) {\r |
| | 563 | return (Status);\r |
| | 564 | }\r |
| | 565 | \r |
| | 566 | //\r |
| | 567 | // If we read 0 bytes (but did not have erros) we already read in the last file.\r |
| | 568 | //\r |
| | 569 | if (BufferSize == 0) {\r |
| | 570 | FreePool(Buffer);\r |
| | 571 | *NoFile = TRUE;\r |
| | 572 | }\r |
| | 573 | \r |
| | 574 | return (EFI_SUCCESS);\r |
| | 575 | }\r |
| | 576 | \r |
| | 577 | /**\r |
| | 578 | Retrieve the size of a file.\r |
| | 579 | \r |
| | 580 | if FileHandle is NULL then ASSERT()\r |
| | 581 | if Size is NULL then ASSERT()\r |
| | 582 | \r |
| | 583 | This function extracts the file size info from the FileHandle's EFI_FILE_INFO\r |
| | 584 | data.\r |
| | 585 | \r |
| | 586 | @param FileHandle file handle from which size is retrieved\r |
| | 587 | @param Size pointer to size\r |
| | 588 | \r |
| | 589 | @retval EFI_SUCCESS operation was completed sucessfully\r |
| | 590 | @retval EFI_DEVICE_ERROR cannot access the file\r |
| | 591 | **/\r |
| | 592 | EFI_STATUS\r |
| | 593 | EFIAPI\r |
| | 594 | FileHandleGetSize (\r |
| | 595 | IN EFI_FILE_HANDLE FileHandle,\r |
| | 596 | OUT UINT64 *Size\r |
| | 597 | )\r |
| | 598 | {\r |
| | 599 | EFI_FILE_INFO *FileInfo;\r |
| | 600 | \r |
| | 601 | //\r |
| | 602 | // ASSERT for FileHandle or Size being NULL\r |
| | 603 | //\r |
| | 604 | ASSERT (FileHandle != NULL);\r |
| | 605 | ASSERT (Size != NULL);\r |
| | 606 | \r |
| | 607 | //\r |
| | 608 | // get the FileInfo structure\r |
| | 609 | //\r |
| | 610 | FileInfo = FileHandleGetInfo(FileHandle);\r |
| | 611 | if (FileInfo == NULL) {\r |
| | 612 | return (EFI_DEVICE_ERROR);\r |
| | 613 | }\r |
| | 614 | \r |
| | 615 | //\r |
| | 616 | // Assign the Size pointer to the correct value\r |
| | 617 | //\r |
| | 618 | *Size = FileInfo->FileSize;\r |
| | 619 | \r |
| | 620 | //\r |
| | 621 | // free the FileInfo memory\r |
| | 622 | //\r |
| | 623 | FreePool(FileInfo);\r |
| | 624 | \r |
| | 625 | return (EFI_SUCCESS);\r |
| | 626 | }\r |
| | 627 | \r |
| | 628 | /**\r |
| | 629 | Set the size of a file.\r |
| | 630 | \r |
| | 631 | If FileHandle is NULL then ASSERT().\r |
| | 632 | \r |
| | 633 | This function changes the file size info from the FileHandle's EFI_FILE_INFO\r |
| | 634 | data.\r |
| | 635 | \r |
| | 636 | @param FileHandle File handle whose size is to be changed.\r |
| | 637 | @param Size New size.\r |
| | 638 | \r |
| | 639 | @retval EFI_SUCCESS operation was completed sucessfully.\r |
| | 640 | @retval EFI_DEVICE_ERROR cannot access the file.\r |
| | 641 | **/\r |
| | 642 | EFI_STATUS\r |
| | 643 | EFIAPI\r |
| | 644 | FileHandleSetSize (\r |
| | 645 | IN EFI_FILE_HANDLE FileHandle,\r |
| | 646 | IN UINT64 Size\r |
| | 647 | )\r |
| | 648 | {\r |
| | 649 | EFI_FILE_INFO *FileInfo;\r |
| | 650 | EFI_STATUS Status;\r |
| | 651 | \r |
| | 652 | //\r |
| | 653 | // ASSERT for FileHandle or Size being NULL\r |
| | 654 | //\r |
| | 655 | ASSERT (FileHandle != NULL);\r |
| | 656 | \r |
| | 657 | //\r |
| | 658 | // get the FileInfo structure\r |
| | 659 | //\r |
| | 660 | FileInfo = FileHandleGetInfo(FileHandle);\r |
| | 661 | if (FileInfo == NULL) {\r |
| | 662 | return (EFI_DEVICE_ERROR);\r |
| | 663 | }\r |
| | 664 | \r |
| | 665 | //\r |
| | 666 | // Assign the FileSize pointer to the new value\r |
| | 667 | //\r |
| | 668 | FileInfo->FileSize = Size;\r |
| | 669 | \r |
| | 670 | Status = FileHandleSetInfo(FileHandle, FileInfo);\r |
| | 671 | //\r |
| | 672 | // free the FileInfo memory\r |
| | 673 | //\r |
| | 674 | FreePool(FileInfo);\r |
| | 675 | \r |
| | 676 | return (Status);\r |
| | 677 | }\r |
| | 678 | \r |
| | 679 | /**\r |
| | 680 | Safely append (on the left) with automatic string resizing given length of Destination and\r |
| | 681 | desired length of copy from Source.\r |
| | 682 | \r |
| | 683 | append the first D characters of Source to the end of Destination, where D is\r |
| | 684 | the lesser of Count and the StrLen() of Source. If appending those D characters\r |
| | 685 | will fit within Destination (whose Size is given as CurrentSize) and\r |
| | 686 | still leave room for a NULL terminator, then those characters are appended,\r |
| | 687 | starting at the original terminating NULL of Destination, and a new terminating\r |
| | 688 | NULL is appended.\r |
| | 689 | \r |
| | 690 | If appending D characters onto Destination will result in a overflow of the size\r |
| | 691 | given in CurrentSize the string will be grown such that the copy can be performed\r |
| | 692 | and CurrentSize will be updated to the new size.\r |
| | 693 | \r |
| | 694 | If Source is NULL, there is nothing to append, just return the current buffer in\r |
| | 695 | Destination.\r |
| | 696 | \r |
| | 697 | if Destination is NULL, then ASSERT()\r |
| | 698 | if Destination's current length (including NULL terminator) is already more then\r |
| | 699 | CurrentSize, then ASSERT()\r |
| | 700 | \r |
| | 701 | @param[in, out] Destination The String to append onto\r |
| | 702 | @param[in, out] CurrentSize on call the number of bytes in Destination. On\r |
| | 703 | return possibly the new size (still in bytes). if NULL\r |
| | 704 | then allocate whatever is needed.\r |
| | 705 | @param[in] Source The String to append from\r |
| | 706 | @param[in] Count Maximum number of characters to append. if 0 then\r |
| | 707 | all are appended.\r |
| | 708 | \r |
| | 709 | @return Destination return the resultant string.\r |
| | 710 | **/\r |
| | 711 | CHAR16*\r |
| | 712 | EFIAPI\r |
| | 713 | StrnCatGrowLeft (\r |
| | 714 | IN OUT CHAR16 **Destination,\r |
| | 715 | IN OUT UINTN *CurrentSize,\r |
| | 716 | IN CONST CHAR16 *Source,\r |
| | 717 | IN UINTN Count\r |
| | 718 | )\r |
| | 719 | {\r |
| | 720 | UINTN DestinationStartSize;\r |
| | 721 | UINTN NewSize;\r |
| | 722 | UINTN CopySize;\r |
| | 723 | \r |
| | 724 | //\r |
| | 725 | // ASSERTs\r |
| | 726 | //\r |
| | 727 | ASSERT(Destination != NULL);\r |
| | 728 | \r |
| | 729 | //\r |
| | 730 | // If there's nothing to do then just return Destination\r |
| | 731 | //\r |
| | 732 | if (Source == NULL) {\r |
| | 733 | return (*Destination);\r |
| | 734 | }\r |
| | 735 | \r |
| | 736 | //\r |
| | 737 | // allow for NULL pointers address as Destination\r |
| | 738 | //\r |
| | 739 | if (*Destination != NULL) {\r |
| | 740 | ASSERT(CurrentSize != 0);\r |
| | 741 | DestinationStartSize = StrSize(*Destination);\r |
| | 742 | ASSERT(DestinationStartSize <= *CurrentSize);\r |
| | 743 | } else {\r |
| | 744 | DestinationStartSize = 0;\r |
| | 745 | // ASSERT(*CurrentSize == 0);\r |
| | 746 | }\r |
| | 747 | \r |
| | 748 | //\r |
| | 749 | // Append all of Source?\r |
| | 750 | //\r |
| | 751 | if (Count == 0) {\r |
| | 752 | Count = StrSize(Source);\r |
| | 753 | }\r |
| | 754 | \r |
| | 755 | //\r |
| | 756 | // Test and grow if required\r |
| | 757 | //\r |
| | 758 | if (CurrentSize != NULL) {\r |
| | 759 | NewSize = *CurrentSize;\r |
| | 760 | while (NewSize < (DestinationStartSize + Count)) {\r |
| | 761 | NewSize += 2 * Count;\r |
| | 762 | }\r |
| | 763 | *Destination = ReallocatePool(*CurrentSize, NewSize, *Destination);\r |
| | 764 | *CurrentSize = NewSize;\r |
| | 765 | } else {\r |
| | 766 | *Destination = AllocateZeroPool(Count+sizeof(CHAR16));\r |
| | 767 | }\r |
| | 768 | \r |
| | 769 | CopySize = StrSize(*Destination);\r |
| | 770 | CopyMem((*Destination)+((Count-2)/sizeof(CHAR16)), *Destination, CopySize);\r |
| | 771 | CopyMem(*Destination, Source, Count-2);\r |
| | 772 | return (*Destination);\r |
| | 773 | }\r |
| | 774 | \r |
| | 775 | /**\r |
| | 776 | Function to get a full filename given a EFI_FILE_HANDLE somewhere lower on the\r |
| | 777 | directory 'stack'.\r |
| | 778 | \r |
| | 779 | if Handle is NULL, return EFI_INVALID_PARAMETER\r |
| | 780 | \r |
| | 781 | @param[in] Handle Handle to the Directory or File to create path to.\r |
| | 782 | @param[out] FullFileName pointer to pointer to generated full file name. It\r |
| | 783 | is the responsibility of the caller to free this memory\r |
| | 784 | with a call to FreePool().\r |
| | 785 | @retval EFI_SUCCESS the operation was sucessful and the FullFileName is valid.\r |
| | 786 | @retval EFI_INVALID_PARAMETER Handle was NULL.\r |
| | 787 | @retval EFI_INVALID_PARAMETER FullFileName was NULL.\r |
| | 788 | @retval EFI_OUT_OF_RESOURCES a memory allocation failed.\r |
| | 789 | **/\r |
| | 790 | EFI_STATUS\r |
| | 791 | EFIAPI\r |
| | 792 | FileHandleGetFileName (\r |
| | 793 | IN CONST EFI_FILE_HANDLE Handle,\r |
| | 794 | OUT CHAR16 **FullFileName\r |
| | 795 | )\r |
| | 796 | {\r |
| | 797 | EFI_STATUS Status;\r |
| | 798 | UINTN Size;\r |
| | 799 | EFI_FILE_HANDLE CurrentHandle;\r |
| | 800 | EFI_FILE_HANDLE NextHigherHandle;\r |
| | 801 | EFI_FILE_INFO *FileInfo;\r |
| | 802 | \r |
| | 803 | Size = 0;\r |
| | 804 | \r |
| | 805 | //\r |
| | 806 | // Check our parameters\r |
| | 807 | //\r |
| | 808 | if (FullFileName == NULL || Handle == NULL) {\r |
| | 809 | return (EFI_INVALID_PARAMETER);\r |
| | 810 | }\r |
| | 811 | \r |
| | 812 | *FullFileName = NULL;\r |
| | 813 | CurrentHandle = NULL;\r |
| | 814 | \r |
| | 815 | Status = Handle->Open(Handle, &CurrentHandle, L".", EFI_FILE_MODE_READ, 0);\r |
| | 816 | if (!EFI_ERROR(Status)) {\r |
| | 817 | //\r |
| | 818 | // Reverse out the current directory on the device\r |
| | 819 | //\r |
| | 820 | for (;;) {\r |
| | 821 | FileInfo = FileHandleGetInfo(CurrentHandle);\r |
| | 822 | if (FileInfo == NULL) {\r |
| | 823 | Status = EFI_OUT_OF_RESOURCES;\r |
| | 824 | break;\r |
| | 825 | } else {\r |
| | 826 | //\r |
| | 827 | // We got info... do we have a name? if yes preceed the current path with it...\r |
| | 828 | //\r |
| | 829 | if (StrLen (FileInfo->FileName) == 0) {\r |
| | 830 | if (*FullFileName == NULL) {\r |
| | 831 | ASSERT((*FullFileName == NULL && Size == 0) || (*FullFileName != NULL));\r |
| | 832 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, L"\\", 0);\r |
| | 833 | }\r |
| | 834 | FreePool(FileInfo);\r |
| | 835 | break;\r |
| | 836 | } else {\r |
| | 837 | if (*FullFileName == NULL) {\r |
| | 838 | ASSERT((*FullFileName == NULL && Size == 0) || (*FullFileName != NULL));\r |
| | 839 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, L"\\", 0);\r |
| | 840 | }\r |
| | 841 | ASSERT((*FullFileName == NULL && Size == 0) || (*FullFileName != NULL));\r |
| | 842 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, FileInfo->FileName, 0);\r |
| | 843 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, L"\\", 0);\r |
| | 844 | FreePool(FileInfo);\r |
| | 845 | }\r |
| | 846 | }\r |
| | 847 | //\r |
| | 848 | // Move to the parent directory\r |
| | 849 | //\r |
| | 850 | Status = CurrentHandle->Open (CurrentHandle, &NextHigherHandle, L"..", EFI_FILE_MODE_READ, 0);\r |
| | 851 | if (EFI_ERROR (Status)) {\r |
| | 852 | break;\r |
| | 853 | }\r |
| | 854 | \r |
| | 855 | FileHandleClose(CurrentHandle);\r |
| | 856 | CurrentHandle = NextHigherHandle;\r |
| | 857 | }\r |
| | 858 | } else if (Status == EFI_NOT_FOUND) {\r |
| | 859 | Status = EFI_SUCCESS;\r |
| | 860 | ASSERT((*FullFileName == NULL && Size == 0) || (*FullFileName != NULL));\r |
| | 861 | *FullFileName = StrnCatGrowLeft(FullFileName, &Size, L"\\", 0);\r |
| | 862 | }\r |
| | 863 | \r |
| | 864 | if (CurrentHandle != NULL) {\r |
| | 865 | CurrentHandle->Close (CurrentHandle);\r |
| | 866 | }\r |
| | 867 | \r |
| | 868 | if (EFI_ERROR(Status) && *FullFileName != NULL) {\r |
| | 869 | FreePool(*FullFileName);\r |
| | 870 | }\r |
| | 871 | \r |
| | 872 | return (Status);\r |
| | 873 | }\r |
| | 874 | \r |
| | 875 | /**\r |
| | 876 | Function to read a single line from a file. The \n is not included in the returned\r |
| | 877 | buffer. The returned buffer must be callee freed.\r |
| | 878 | \r |
| | 879 | If the position upon start is 0, then the Ascii Boolean will be set. This should be\r |
| | 880 | maintained and not changed for all operations with the same file.\r |
| | 881 | \r |
| | 882 | @param[in] Handle FileHandle to read from.\r |
| | 883 | @param[in, out] Ascii Boolean value for indicating whether the file is Ascii (TRUE) or UCS2 (FALSE);\r |
| | 884 | \r |
| | 885 | @return The line of text from the file.\r |
| | 886 | \r |
| | 887 | @sa FileHandleReadLine\r |
| | 888 | **/\r |
| | 889 | CHAR16*\r |
| | 890 | EFIAPI\r |
| | 891 | FileHandleReturnLine(\r |
| | 892 | IN EFI_FILE_HANDLE Handle,\r |
| | 893 | IN OUT BOOLEAN *Ascii\r |
| | 894 | )\r |
| | 895 | {\r |
| | 896 | CHAR16 *RetVal;\r |
| | 897 | UINTN Size;\r |
| | 898 | EFI_STATUS Status;\r |
| | 899 | \r |
| | 900 | Size = 0;\r |
| | 901 | RetVal = NULL;\r |
| | 902 | \r |
| | 903 | Status = FileHandleReadLine(Handle, RetVal, &Size, FALSE, Ascii);\r |
| | 904 | if (Status == EFI_BUFFER_TOO_SMALL) {\r |
| | 905 | RetVal = AllocateZeroPool(Size);\r |
| | 906 | Status = FileHandleReadLine(Handle, RetVal, &Size, FALSE, Ascii);\r |
| | 907 | }\r |
| | 908 | ASSERT_EFI_ERROR(Status);\r |
| | 909 | if (EFI_ERROR(Status) && (RetVal != NULL)) {\r |
| | 910 | FreePool(RetVal);\r |
| | 911 | RetVal = NULL;\r |
| | 912 | }\r |
| | 913 | return (RetVal);\r |
| | 914 | }\r |
| | 915 | \r |
| | 916 | /**\r |
| | 917 | Function to read a single line (up to but not including the \n) from a EFI_FILE_HANDLE.\r |
| | 918 | \r |
| | 919 | If the position upon start is 0, then the Ascii Boolean will be set. This should be\r |
| | 920 | maintained and not changed for all operations with the same file.\r |
| | 921 | \r |
| | 922 | @param[in] Handle FileHandle to read from\r |
| | 923 | @param[in, out] Buffer pointer to buffer to read into\r |
| | 924 | @param[in, out] Size pointer to number of bytes in buffer\r |
| | 925 | @param[in] Truncate if TRUE then allows for truncation of the line to fit.\r |
| | 926 | if FALSE will reset the position to the begining of the\r |
| | 927 | line if the buffer is not large enough.\r |
| | 928 | @param[in, out] Ascii Boolean value for indicating whether the file is Ascii (TRUE) or UCS2 (FALSE);\r |
| | 929 | \r |
| | 930 | @retval EFI_SUCCESS the operation was sucessful. the line is stored in\r |
| | 931 | Buffer.\r |
| | 932 | @retval EFI_INVALID_PARAMETER Handle was NULL.\r |
| | 933 | @retval EFI_INVALID_PARAMETER Size was NULL.\r |
| | 934 | @retval EFI_BUFFER_TOO_SMALL Size was not enough space to store the line.\r |
| | 935 | Size was updated to minimum space required.\r |
| | 936 | @sa FileHandleRead\r |
| | 937 | **/\r |
| | 938 | EFI_STATUS\r |
| | 939 | EFIAPI\r |
| | 940 | FileHandleReadLine(\r |
| | 941 | IN EFI_FILE_HANDLE Handle,\r |
| | 942 | IN OUT CHAR16 *Buffer,\r |
| | 943 | IN OUT UINTN *Size,\r |
| | 944 | IN BOOLEAN Truncate,\r |
| | 945 | IN OUT BOOLEAN *Ascii\r |
| | 946 | )\r |
| | 947 | {\r |
| | 948 | EFI_STATUS Status;\r |
| | 949 | CHAR16 CharBuffer;\r |
| | 950 | UINTN CharSize;\r |
| | 951 | UINTN CountSoFar;\r |
| | 952 | UINT64 OriginalFilePosition;\r |
| | 953 | \r |
| | 954 | \r |
| | 955 | if (Handle == NULL\r |
| | 956 | ||Size == NULL\r |
| | 957 | ){\r |
| | 958 | return (EFI_INVALID_PARAMETER);\r |
| | 959 | }\r |
| | 960 | if (Buffer == NULL) {\r |
| | 961 | ASSERT(*Size == 0);\r |
| | 962 | } else {\r |
| | 963 | *Buffer = CHAR_NULL;\r |
| | 964 | }\r |
| | 965 | FileHandleGetPosition(Handle, &OriginalFilePosition);\r |
| | 966 | if (OriginalFilePosition == 0) {\r |
| | 967 | CharSize = sizeof(CHAR16);\r |
| | 968 | Status = FileHandleRead(Handle, &CharSize, &CharBuffer);\r |
| | 969 | ASSERT_EFI_ERROR(Status);\r |
| | 970 | if (CharBuffer == gUnicodeFileTag) {\r |
| | 971 | *Ascii = FALSE;\r |
| | 972 | } else {\r |
| | 973 | *Ascii = TRUE;\r |
| | 974 | FileHandleSetPosition(Handle, OriginalFilePosition);\r |
| | 975 | }\r |
| | 976 | }\r |
| | 977 | \r |
| | 978 | for (CountSoFar = 0;;CountSoFar++){\r |
| | 979 | CharBuffer = 0;\r |
| | 980 | if (*Ascii) {\r |
| | 981 | CharSize = sizeof(CHAR8);\r |
| | 982 | } else {\r |
| | 983 | CharSize = sizeof(CHAR16);\r |
| | 984 | }\r |
| | 985 | Status = FileHandleRead(Handle, &CharSize, &CharBuffer);\r |
| | 986 | if ( EFI_ERROR(Status)\r |
| | 987 | || CharSize == 0\r |
| | 988 | || (CharBuffer == L'\n' && !(*Ascii))\r |
| | 989 | || (CharBuffer == '\n' && *Ascii)\r |
| | 990 | ){\r |
| | 991 | break;\r |
| | 992 | }\r |
| | 993 | //\r |
| | 994 | // if we have space save it...\r |
| | 995 | //\r |
| | 996 | if ((CountSoFar+1)*sizeof(CHAR16) < *Size){\r |
| | 997 | ASSERT(Buffer != NULL);\r |
| | 998 | ((CHAR16*)Buffer)[CountSoFar] = CharBuffer;\r |
| | 999 | ((CHAR16*)Buffer)[CountSoFar+1] = CHAR_NULL;\r |
| | 1000 | }\r |
| | 1001 | }\r |
| | 1002 | \r |
| | 1003 | //\r |
| | 1004 | // if we ran out of space tell when...\r |
| | 1005 | //\r |
| | 1006 | if ((CountSoFar+1)*sizeof(CHAR16) > *Size){\r |
| | 1007 | *Size = (CountSoFar+1)*sizeof(CHAR16);\r |
| | 1008 | if (!Truncate) {\r |
| | 1009 | FileHandleSetPosition(Handle, OriginalFilePosition);\r |
| | 1010 | } else {\r |
| | 1011 | DEBUG((DEBUG_WARN, "The line was truncated in FileHandleReadLine"));\r |
| | 1012 | }\r |
| | 1013 | return (EFI_BUFFER_TOO_SMALL);\r |
| | 1014 | }\r |
| | 1015 | while(Buffer[StrLen(Buffer)-1] == L'\r') {\r |
| | 1016 | Buffer[StrLen(Buffer)-1] = CHAR_NULL;\r |
| | 1017 | }\r |
| | 1018 | \r |
| | 1019 | return (Status);\r |
| | 1020 | }\r |
| | 1021 | \r |
| | 1022 | /**\r |
| | 1023 | function to write a line of unicode text to a file.\r |
| | 1024 | \r |
| | 1025 | if Handle is NULL, ASSERT.\r |
| | 1026 | if Buffer is NULL, do nothing. (return SUCCESS)\r |
| | 1027 | \r |
| | 1028 | @param[in] Handle FileHandle to write to\r |
| | 1029 | @param[in] Buffer Buffer to write\r |
| | 1030 | \r |
| | 1031 | @retval EFI_SUCCESS the data was written.\r |
| | 1032 | @retval other failure.\r |
| | 1033 | \r |
| | 1034 | @sa FileHandleWrite\r |
| | 1035 | **/\r |
| | 1036 | EFI_STATUS\r |
| | 1037 | EFIAPI\r |
| | 1038 | FileHandleWriteLine(\r |
| | 1039 | IN EFI_FILE_HANDLE Handle,\r |
| | 1040 | IN CHAR16 *Buffer\r |
| | 1041 | )\r |
| | 1042 | {\r |
| | 1043 | EFI_STATUS Status;\r |
| | 1044 | UINTN Size;\r |
| | 1045 | \r |
| | 1046 | ASSERT(Handle != NULL);\r |
| | 1047 | \r |
| | 1048 | if (Buffer == NULL) {\r |
| | 1049 | return (EFI_SUCCESS);\r |
| | 1050 | }\r |
| | 1051 | \r |
| | 1052 | Size = StrSize(Buffer) - sizeof(Buffer[0]);\r |
| | 1053 | Status = FileHandleWrite(Handle, &Size, Buffer);\r |
| | 1054 | if (EFI_ERROR(Status)) {\r |
| | 1055 | return (Status);\r |
| | 1056 | }\r |
| | 1057 | Size = StrSize(L"\r\n") - sizeof(CHAR16);\r |
| | 1058 | return FileHandleWrite(Handle, &Size, L"\r\n");\r |
| | 1059 | }\r |
| | 1060 | \r |
| | 1061 | /**\r |
| | 1062 | function to take a formatted argument and print it to a file.\r |
| | 1063 | \r |
| | 1064 | @param[in] Handle the file handle for the file to write to\r |
| | 1065 | @param[in] Format the format argument (see printlib for format specifier)\r |
| | 1066 | @param[in] ... the variable arguments for the format\r |
| | 1067 | \r |
| | 1068 | @retval EFI_SUCCESS the operation was sucessful\r |
| | 1069 | @return other a return value from FileHandleWriteLine\r |
| | 1070 | \r |
| | 1071 | @sa FileHandleWriteLine\r |
| | 1072 | **/\r |
| | 1073 | EFI_STATUS\r |
| | 1074 | EFIAPI\r |
| | 1075 | FileHandlePrintLine(\r |
| | 1076 | IN EFI_FILE_HANDLE Handle,\r |
| | 1077 | IN CONST CHAR16 *Format,\r |
| | 1078 | ...\r |
| | 1079 | )\r |
| | 1080 | {\r |
| | 1081 | VA_LIST Marker;\r |
| | 1082 | CHAR16 *Buffer;\r |
| | 1083 | EFI_STATUS Status;\r |
| | 1084 | \r |
| | 1085 | VA_START (Marker, Format);\r |
| | 1086 | \r |
| | 1087 | //\r |
| | 1088 | // Get a buffer to print into\r |
| | 1089 | //\r |
| | 1090 | Buffer = AllocateZeroPool (PcdGet16 (PcdShellPrintBufferSize));\r |
| | 1091 | ASSERT (Buffer != NULL);\r |
| | 1092 | \r |
| | 1093 | //\r |
| | 1094 | // Print into our buffer\r |
| | 1095 | //\r |
| | 1096 | UnicodeVSPrint (Buffer, PcdGet16 (PcdShellPrintBufferSize), Format, Marker);\r |
| | 1097 | \r |
| | 1098 | //\r |
| | 1099 | // Print buffer into file\r |
| | 1100 | //\r |
| | 1101 | Status = FileHandleWriteLine(Handle, Buffer);\r |
| | 1102 | \r |
| | 1103 | //\r |
| | 1104 | // Cleanup and return\r |
| | 1105 | //\r |
| | 1106 | FreePool(Buffer);\r |
| | 1107 | return (Status);\r |
| | 1108 | }\r |
| | 1109 | \r |
| | 1110 | /**\r |
| | 1111 | Function to determine if a FILE_HANDLE is at the end of the file.\r |
| | 1112 | \r |
| | 1113 | This will NOT work on directories.\r |
| | 1114 | \r |
| | 1115 | If Handle is NULL, then ASSERT.\r |
| | 1116 | \r |
| | 1117 | @param[in] Handle the file handle\r |
| | 1118 | \r |
| | 1119 | @retval TRUE the position is at the end of the file\r |
| | 1120 | @retval FALSE the position is not at the end of the file\r |
| | 1121 | **/\r |
| | 1122 | BOOLEAN\r |
| | 1123 | EFIAPI\r |
| | 1124 | FileHandleEof(\r |
| | 1125 | IN EFI_FILE_HANDLE Handle\r |
| | 1126 | )\r |
| | 1127 | {\r |
| | 1128 | EFI_FILE_INFO *Info;\r |
| | 1129 | UINT64 Pos;\r |
| | 1130 | BOOLEAN RetVal;\r |
| | 1131 | \r |
| | 1132 | //\r |
| | 1133 | // ASSERT if Handle is NULL\r |
| | 1134 | //\r |
| | 1135 | ASSERT(Handle != NULL);\r |
| | 1136 | \r |
| | 1137 | FileHandleGetPosition(Handle, &Pos);\r |
| | 1138 | Info = FileHandleGetInfo (Handle);\r |
| | 1139 | ASSERT(Info != NULL);\r |
| | 1140 | FileHandleSetPosition(Handle, Pos);\r |
| | 1141 | \r |
| | 1142 | if (Info == NULL) {\r |
| | 1143 | return (FALSE);\r |
| | 1144 | }\r |
| | 1145 | \r |
| | 1146 | if (Pos == Info->FileSize) {\r |
| | 1147 | RetVal = TRUE;\r |
| | 1148 | } else {\r |
| | 1149 | RetVal = FALSE;\r |
| | 1150 | }\r |
| | 1151 | \r |
| | 1152 | FreePool (Info);\r |
| | 1153 | \r |
| | 1154 | return (RetVal);\r |
| | 1155 | }\r |
projects / mirror_edk2.git / blame_incremental