| 804405e7 |
1 | /*++\r |
| 2 | \r |
| 3 | Copyright (c) 2004 - 2007, Intel Corporation \r |
| 4 | All rights reserved. This program and the accompanying materials \r |
| 5 | are licensed and made available under the terms and conditions of the BSD License \r |
| 6 | which accompanies this distribution. The full text of the license may be found at \r |
| 7 | http://opensource.org/licenses/bsd-license.php \r |
| 8 | \r |
| 9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 11 | \r |
| 12 | Module Name:\r |
| 13 | \r |
| 14 | UnixBlockIo.c\r |
| 15 | \r |
| 16 | Abstract:\r |
| 17 | \r |
| 18 | Produce block IO abstractions for real devices on your PC using Posix APIs.\r |
| 19 | The configuration of what devices to mount or emulate comes from UNIX \r |
| 20 | environment variables. The variables must be visible to the Microsoft* \r |
| 21 | Developer Studio for them to work.\r |
| 22 | \r |
| 23 | <F>ixed - Fixed disk like a hard drive.\r |
| 24 | <R>emovable - Removable media like a floppy or CD-ROM.\r |
| 25 | Read <O>nly - Write protected device.\r |
| 26 | Read <W>rite - Read write device.\r |
| 27 | <block count> - Decimal number of blocks a device supports.\r |
| 28 | <block size> - Decimal number of bytes per block.\r |
| 29 | \r |
| 30 | UNIX envirnonment variable contents. '<' and '>' are not part of the variable, \r |
| 31 | they are just used to make this help more readable. There should be no \r |
| 32 | spaces between the ';'. Extra spaces will break the variable. A '!' is \r |
| 33 | used to seperate multiple devices in a variable.\r |
| 34 | \r |
| 35 | EFI_UNIX_VIRTUAL_DISKS = \r |
| 36 | <F | R><O | W>;<block count>;<block size>[!...]\r |
| 37 | \r |
| 38 | EFI_UNIX_PHYSICAL_DISKS =\r |
| 39 | <drive letter>:<F | R><O | W>;<block count>;<block size>[!...]\r |
| 40 | \r |
| 41 | Virtual Disks: These devices use a file to emulate a hard disk or removable\r |
| 42 | media device. \r |
| 43 | \r |
| 44 | Thus a 20 MB emulated hard drive would look like:\r |
| 45 | EFI_UNIX_VIRTUAL_DISKS=FW;40960;512\r |
| 46 | \r |
| 47 | A 1.44MB emulated floppy with a block size of 1024 would look like:\r |
| 48 | EFI_UNIX_VIRTUAL_DISKS=RW;1440;1024\r |
| 49 | \r |
| 50 | Physical Disks: These devices use UNIX to open a real device in your system\r |
| 51 | \r |
| 52 | Thus a 120 MB floppy would look like:\r |
| 53 | EFI_UNIX_PHYSICAL_DISKS=B:RW;245760;512\r |
| 54 | \r |
| 55 | Thus a standard CD-ROM floppy would look like:\r |
| 56 | EFI_UNIX_PHYSICAL_DISKS=Z:RO;307200;2048\r |
| 57 | \r |
| 58 | \r |
| 59 | * Other names and brands may be claimed as the property of others.\r |
| 60 | \r |
| 61 | --*/\r |
| 62 | \r |
| 63 | #include <fcntl.h>\r |
| 64 | #include <unistd.h>\r |
| 65 | #include "UnixBlockIo.h"\r |
| 66 | \r |
| 67 | //\r |
| 68 | // Block IO protocol member functions\r |
| 69 | //\r |
| 70 | STATIC\r |
| 71 | EFI_STATUS\r |
| 72 | EFIAPI\r |
| 73 | UnixBlockIoReadBlocks (\r |
| 74 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
| 75 | IN UINT32 MediaId,\r |
| 76 | IN EFI_LBA Lba,\r |
| 77 | IN UINTN BufferSize,\r |
| 78 | OUT VOID *Buffer\r |
| 79 | )\r |
| 80 | /*++\r |
| 81 | \r |
| 82 | Routine Description:\r |
| 83 | \r |
| 84 | TODO: Add function description\r |
| 85 | \r |
| 86 | Arguments:\r |
| 87 | \r |
| 88 | This - TODO: add argument description\r |
| 89 | MediaId - TODO: add argument description\r |
| 90 | Lba - TODO: add argument description\r |
| 91 | BufferSize - TODO: add argument description\r |
| 92 | Buffer - TODO: add argument description\r |
| 93 | \r |
| 94 | Returns:\r |
| 95 | \r |
| 96 | TODO: add return values\r |
| 97 | \r |
| 98 | --*/\r |
| 99 | ;\r |
| 100 | \r |
| 101 | STATIC\r |
| 102 | EFI_STATUS\r |
| 103 | EFIAPI\r |
| 104 | UnixBlockIoWriteBlocks (\r |
| 105 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
| 106 | IN UINT32 MediaId,\r |
| 107 | IN EFI_LBA Lba,\r |
| 108 | IN UINTN BufferSize,\r |
| 109 | IN VOID *Buffer\r |
| 110 | )\r |
| 111 | /*++\r |
| 112 | \r |
| 113 | Routine Description:\r |
| 114 | \r |
| 115 | TODO: Add function description\r |
| 116 | \r |
| 117 | Arguments:\r |
| 118 | \r |
| 119 | This - TODO: add argument description\r |
| 120 | MediaId - TODO: add argument description\r |
| 121 | Lba - TODO: add argument description\r |
| 122 | BufferSize - TODO: add argument description\r |
| 123 | Buffer - TODO: add argument description\r |
| 124 | \r |
| 125 | Returns:\r |
| 126 | \r |
| 127 | TODO: add return values\r |
| 128 | \r |
| 129 | --*/\r |
| 130 | ;\r |
| 131 | \r |
| 132 | STATIC\r |
| 133 | EFI_STATUS\r |
| 134 | EFIAPI\r |
| 135 | UnixBlockIoFlushBlocks (\r |
| 136 | IN EFI_BLOCK_IO_PROTOCOL *This\r |
| 137 | )\r |
| 138 | /*++\r |
| 139 | \r |
| 140 | Routine Description:\r |
| 141 | \r |
| 142 | TODO: Add function description\r |
| 143 | \r |
| 144 | Arguments:\r |
| 145 | \r |
| 146 | This - TODO: add argument description\r |
| 147 | \r |
| 148 | Returns:\r |
| 149 | \r |
| 150 | TODO: add return values\r |
| 151 | \r |
| 152 | --*/\r |
| 153 | ;\r |
| 154 | \r |
| 155 | STATIC\r |
| 156 | EFI_STATUS\r |
| 157 | EFIAPI\r |
| 158 | UnixBlockIoResetBlock (\r |
| 159 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
| 160 | IN BOOLEAN ExtendedVerification\r |
| 161 | )\r |
| 162 | /*++\r |
| 163 | \r |
| 164 | Routine Description:\r |
| 165 | \r |
| 166 | TODO: Add function description\r |
| 167 | \r |
| 168 | Arguments:\r |
| 169 | \r |
| 170 | This - TODO: add argument description\r |
| 171 | ExtendedVerification - TODO: add argument description\r |
| 172 | \r |
| 173 | Returns:\r |
| 174 | \r |
| 175 | TODO: add return values\r |
| 176 | \r |
| 177 | --*/\r |
| 178 | ;\r |
| 179 | \r |
| 180 | //\r |
| 181 | // Private Worker functions\r |
| 182 | //\r |
| 183 | STATIC\r |
| 184 | EFI_STATUS\r |
| 185 | UnixBlockIoCreateMapping (\r |
| 186 | IN EFI_UNIX_IO_PROTOCOL *UnixIo,\r |
| 187 | IN EFI_HANDLE EfiDeviceHandle,\r |
| 188 | IN CHAR16 *Filename,\r |
| 189 | IN BOOLEAN ReadOnly,\r |
| 190 | IN BOOLEAN RemovableMedia,\r |
| 191 | IN UINTN NumberOfBlocks,\r |
| 192 | IN UINTN BlockSize\r |
| 193 | )\r |
| 194 | /*++\r |
| 195 | \r |
| 196 | Routine Description:\r |
| 197 | \r |
| 198 | TODO: Add function description\r |
| 199 | \r |
| 200 | Arguments:\r |
| 201 | \r |
| 202 | UnixIo - TODO: add argument description\r |
| 203 | EfiDeviceHandle - TODO: add argument description\r |
| 204 | Filename - TODO: add argument description\r |
| 205 | ReadOnly - TODO: add argument description\r |
| 206 | RemovableMedia - TODO: add argument description\r |
| 207 | NumberOfBlocks - TODO: add argument description\r |
| 208 | BlockSize - TODO: add argument description\r |
| 209 | DeviceType - TODO: add argument description\r |
| 210 | \r |
| 211 | Returns:\r |
| 212 | \r |
| 213 | TODO: add return values\r |
| 214 | \r |
| 215 | --*/\r |
| 216 | ;\r |
| 217 | \r |
| 218 | STATIC\r |
| 219 | EFI_STATUS\r |
| 220 | UnixBlockIoReadWriteCommon (\r |
| 221 | IN UNIX_BLOCK_IO_PRIVATE *Private,\r |
| 222 | IN UINT32 MediaId,\r |
| 223 | IN EFI_LBA Lba,\r |
| 224 | IN UINTN BufferSize,\r |
| 225 | IN VOID *Buffer,\r |
| 226 | IN CHAR8 *CallerName\r |
| 227 | )\r |
| 228 | /*++\r |
| 229 | \r |
| 230 | Routine Description:\r |
| 231 | \r |
| 232 | TODO: Add function description\r |
| 233 | \r |
| 234 | Arguments:\r |
| 235 | \r |
| 236 | Private - TODO: add argument description\r |
| 237 | MediaId - TODO: add argument description\r |
| 238 | Lba - TODO: add argument description\r |
| 239 | BufferSize - TODO: add argument description\r |
| 240 | Buffer - TODO: add argument description\r |
| 241 | CallerName - TODO: add argument description\r |
| 242 | \r |
| 243 | Returns:\r |
| 244 | \r |
| 245 | TODO: add return values\r |
| 246 | \r |
| 247 | --*/\r |
| 248 | ;\r |
| 249 | \r |
| 250 | STATIC\r |
| 251 | EFI_STATUS\r |
| 252 | UnixBlockIoError (\r |
| 253 | IN UNIX_BLOCK_IO_PRIVATE *Private\r |
| 254 | )\r |
| 255 | /*++\r |
| 256 | \r |
| 257 | Routine Description:\r |
| 258 | \r |
| 259 | TODO: Add function description\r |
| 260 | \r |
| 261 | Arguments:\r |
| 262 | \r |
| 263 | Private - TODO: add argument description\r |
| 264 | \r |
| 265 | Returns:\r |
| 266 | \r |
| 267 | TODO: add return values\r |
| 268 | \r |
| 269 | --*/\r |
| 270 | ;\r |
| 271 | \r |
| 272 | STATIC\r |
| 273 | EFI_STATUS\r |
| 274 | UnixBlockIoOpenDevice (\r |
| 275 | UNIX_BLOCK_IO_PRIVATE *Private\r |
| 276 | )\r |
| 277 | /*++\r |
| 278 | \r |
| 279 | Routine Description:\r |
| 280 | \r |
| 281 | TODO: Add function description\r |
| 282 | \r |
| 283 | Arguments:\r |
| 284 | \r |
| 285 | Private - TODO: add argument description\r |
| 286 | \r |
| 287 | Returns:\r |
| 288 | \r |
| 289 | TODO: add return values\r |
| 290 | \r |
| 291 | --*/\r |
| 292 | ;\r |
| 293 | \r |
| 294 | STATIC\r |
| 295 | CHAR16 *\r |
| 296 | GetNextElementPastTerminator (\r |
| 297 | IN CHAR16 *EnvironmentVariable,\r |
| 298 | IN CHAR16 Terminator\r |
| 299 | )\r |
| 300 | /*++\r |
| 301 | \r |
| 302 | Routine Description:\r |
| 303 | \r |
| 304 | TODO: Add function description\r |
| 305 | \r |
| 306 | Arguments:\r |
| 307 | \r |
| 308 | EnvironmentVariable - TODO: add argument description\r |
| 309 | Terminator - TODO: add argument description\r |
| 310 | \r |
| 311 | Returns:\r |
| 312 | \r |
| 313 | TODO: add return values\r |
| 314 | \r |
| 315 | --*/\r |
| 316 | ;\r |
| 317 | EFI_DRIVER_BINDING_PROTOCOL gUnixBlockIoDriverBinding = {\r |
| 318 | UnixBlockIoDriverBindingSupported,\r |
| 319 | UnixBlockIoDriverBindingStart,\r |
| 320 | UnixBlockIoDriverBindingStop,\r |
| 321 | 0xa,\r |
| 322 | NULL,\r |
| 323 | NULL\r |
| 324 | };\r |
| 325 | \r |
| 326 | EFI_STATUS\r |
| 327 | EFIAPI\r |
| 328 | UnixBlockIoDriverBindingSupported (\r |
| 329 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| 330 | IN EFI_HANDLE Handle,\r |
| 331 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r |
| 332 | )\r |
| 333 | /*++\r |
| 334 | \r |
| 335 | Routine Description:\r |
| 336 | \r |
| 337 | Arguments:\r |
| 338 | \r |
| 339 | Returns:\r |
| 340 | \r |
| 341 | None\r |
| 342 | \r |
| 343 | --*/\r |
| 344 | // TODO: This - add argument and description to function comment\r |
| 345 | // TODO: Handle - add argument and description to function comment\r |
| 346 | // TODO: RemainingDevicePath - add argument and description to function comment\r |
| 347 | {\r |
| 348 | EFI_STATUS Status;\r |
| 349 | EFI_UNIX_IO_PROTOCOL *UnixIo;\r |
| 350 | \r |
| 351 | //\r |
| 352 | // Open the IO Abstraction(s) needed to perform the supported test\r |
| 353 | //\r |
| 354 | Status = gBS->OpenProtocol (\r |
| 355 | Handle,\r |
| 356 | &gEfiUnixIoProtocolGuid,\r |
| 357 | (VOID **)&UnixIo,\r |
| 358 | This->DriverBindingHandle,\r |
| 359 | Handle,\r |
| 360 | EFI_OPEN_PROTOCOL_BY_DRIVER\r |
| 361 | );\r |
| 362 | if (EFI_ERROR (Status)) {\r |
| 363 | return Status;\r |
| 364 | }\r |
| 365 | \r |
| 366 | //\r |
| 367 | // Make sure the UnixThunkProtocol is valid\r |
| 368 | //\r |
| 369 | Status = EFI_UNSUPPORTED;\r |
| 370 | if (UnixIo->UnixThunk->Signature == EFI_UNIX_THUNK_PROTOCOL_SIGNATURE) {\r |
| 371 | \r |
| 372 | //\r |
| 373 | // Check the GUID to see if this is a handle type the driver supports\r |
| 374 | //\r |
| 375 | if (CompareGuid (UnixIo->TypeGuid, &gEfiUnixVirtualDisksGuid) ) {\r |
| 376 | Status = EFI_SUCCESS;\r |
| 377 | }\r |
| 378 | }\r |
| 379 | \r |
| 380 | //\r |
| 381 | // Close the I/O Abstraction(s) used to perform the supported test\r |
| 382 | //\r |
| 383 | gBS->CloseProtocol (\r |
| 384 | Handle,\r |
| 385 | &gEfiUnixIoProtocolGuid,\r |
| 386 | This->DriverBindingHandle,\r |
| 387 | Handle\r |
| 388 | );\r |
| 389 | return Status;\r |
| 390 | }\r |
| 391 | \r |
| 392 | EFI_STATUS\r |
| 393 | EFIAPI\r |
| 394 | UnixBlockIoDriverBindingStart (\r |
| 395 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| 396 | IN EFI_HANDLE Handle,\r |
| 397 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r |
| 398 | )\r |
| 399 | /*++\r |
| 400 | \r |
| 401 | Routine Description:\r |
| 402 | \r |
| 403 | Arguments:\r |
| 404 | \r |
| 405 | Returns:\r |
| 406 | \r |
| 407 | None\r |
| 408 | \r |
| 409 | --*/\r |
| 410 | // TODO: This - add argument and description to function comment\r |
| 411 | // TODO: Handle - add argument and description to function comment\r |
| 412 | // TODO: RemainingDevicePath - add argument and description to function comment\r |
| 413 | {\r |
| 414 | EFI_STATUS Status;\r |
| 415 | EFI_UNIX_IO_PROTOCOL *UnixIo;\r |
| 416 | CHAR16 Buffer[FILENAME_BUFFER_SIZE];\r |
| 417 | CHAR16 *Str;\r |
| 418 | BOOLEAN RemovableMedia;\r |
| 419 | BOOLEAN WriteProtected;\r |
| 420 | UINTN NumberOfBlocks;\r |
| 421 | UINTN BlockSize;\r |
| 422 | INTN i;\r |
| 423 | \r |
| 424 | //\r |
| 425 | // Grab the protocols we need\r |
| 426 | //\r |
| 427 | \r |
| 428 | Status = gBS->OpenProtocol (\r |
| 429 | Handle,\r |
| 430 | &gEfiUnixIoProtocolGuid,\r |
| 431 | (void *)&UnixIo,\r |
| 432 | This->DriverBindingHandle,\r |
| 433 | Handle,\r |
| 434 | EFI_OPEN_PROTOCOL_BY_DRIVER\r |
| 435 | );\r |
| 436 | if (EFI_ERROR (Status)) {\r |
| 437 | return Status;\r |
| 438 | }\r |
| 439 | //\r |
| 440 | // Set DiskType\r |
| 441 | //\r |
| 442 | if (!CompareGuid (UnixIo->TypeGuid, &gEfiUnixVirtualDisksGuid)) {\r |
| 443 | Status = EFI_UNSUPPORTED;\r |
| 444 | goto Done;\r |
| 445 | }\r |
| 446 | \r |
| 447 | Status = EFI_NOT_FOUND;\r |
| 448 | // Extract filename.\r |
| 449 | Str = UnixIo->EnvString;\r |
| 450 | i = 0;\r |
| 451 | while (*Str && *Str != ':')\r |
| 452 | Buffer[i++] = *Str++;\r |
| 453 | Buffer[i] = 0;\r |
| 454 | if (*Str != ':') {\r |
| 455 | goto Done;\r |
| 456 | }\r |
| 457 | \r |
| 458 | Str++;\r |
| 459 | \r |
| 460 | RemovableMedia = FALSE;\r |
| 461 | WriteProtected = TRUE;\r |
| 462 | NumberOfBlocks = 0;\r |
| 463 | BlockSize = 512;\r |
| 464 | do {\r |
| 465 | if (*Str == 'R' || *Str == 'F') {\r |
| 466 | RemovableMedia = (BOOLEAN) (*Str == 'R');\r |
| 467 | Str++;\r |
| 468 | }\r |
| 469 | if (*Str == 'O' || *Str == 'W') {\r |
| 470 | WriteProtected = (BOOLEAN) (*Str == 'O');\r |
| 471 | Str++;\r |
| 472 | }\r |
| 473 | if (*Str == 0)\r |
| 474 | break;\r |
| 475 | if (*Str != ';')\r |
| 476 | goto Done;\r |
| 477 | Str++;\r |
| 478 | \r |
| 479 | NumberOfBlocks = Atoi (Str);\r |
| 480 | Str = GetNextElementPastTerminator (Str, ';');\r |
| 481 | if (NumberOfBlocks == 0)\r |
| 482 | break;\r |
| 483 | \r |
| 484 | BlockSize = Atoi (Str);\r |
| 485 | if (BlockSize != 0)\r |
| 486 | Str = GetNextElementPastTerminator (Str, ';');\r |
| 487 | } while (0);\r |
| 488 | \r |
| 489 | //\r |
| 490 | // If we get here the variable is valid so do the work.\r |
| 491 | //\r |
| 492 | Status = UnixBlockIoCreateMapping (\r |
| 493 | UnixIo,\r |
| 494 | Handle,\r |
| 495 | Buffer,\r |
| 496 | WriteProtected,\r |
| 497 | RemovableMedia,\r |
| 498 | NumberOfBlocks,\r |
| 499 | BlockSize\r |
| 500 | );\r |
| 501 | \r |
| 502 | Done:\r |
| 503 | if (EFI_ERROR (Status)) {\r |
| 504 | gBS->CloseProtocol (\r |
| 505 | Handle,\r |
| 506 | &gEfiUnixIoProtocolGuid,\r |
| 507 | This->DriverBindingHandle,\r |
| 508 | Handle\r |
| 509 | );\r |
| 510 | }\r |
| 511 | \r |
| 512 | return Status;\r |
| 513 | }\r |
| 514 | \r |
| 515 | EFI_STATUS\r |
| 516 | EFIAPI\r |
| 517 | UnixBlockIoDriverBindingStop (\r |
| 518 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| 519 | IN EFI_HANDLE Handle,\r |
| 520 | IN UINTN NumberOfChildren,\r |
| 521 | IN EFI_HANDLE *ChildHandleBuffer\r |
| 522 | )\r |
| 523 | /*++\r |
| 524 | \r |
| 525 | Routine Description:\r |
| 526 | \r |
| 527 | TODO: Add function description\r |
| 528 | \r |
| 529 | Arguments:\r |
| 530 | \r |
| 531 | This - TODO: add argument description\r |
| 532 | Handle - TODO: add argument description\r |
| 533 | NumberOfChildren - TODO: add argument description\r |
| 534 | ChildHandleBuffer - TODO: add argument description\r |
| 535 | \r |
| 536 | Returns:\r |
| 537 | \r |
| 538 | EFI_UNSUPPORTED - TODO: Add description for return value\r |
| 539 | \r |
| 540 | --*/\r |
| 541 | {\r |
| 542 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r |
| 543 | EFI_STATUS Status;\r |
| 544 | UNIX_BLOCK_IO_PRIVATE *Private;\r |
| 545 | \r |
| 546 | //\r |
| 547 | // Get our context back\r |
| 548 | //\r |
| 549 | Status = gBS->OpenProtocol (\r |
| 550 | Handle,\r |
| 551 | &gEfiBlockIoProtocolGuid,\r |
| 552 | (void *)&BlockIo,\r |
| 553 | This->DriverBindingHandle,\r |
| 554 | Handle,\r |
| 555 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r |
| 556 | );\r |
| 557 | if (EFI_ERROR (Status)) {\r |
| 558 | return EFI_UNSUPPORTED;\r |
| 559 | }\r |
| 560 | \r |
| 561 | Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (BlockIo);\r |
| 562 | \r |
| 563 | //\r |
| 564 | // BugBug: If we need to kick people off, we need to make Uninstall Close the handles.\r |
| 565 | // We could pass in our image handle or FLAG our open to be closed via\r |
| 566 | // Unistall (== to saying any CloseProtocol will close our open)\r |
| 567 | //\r |
| 568 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
| 569 | Private->EfiHandle,\r |
| 570 | &gEfiBlockIoProtocolGuid,\r |
| 571 | &Private->BlockIo,\r |
| 572 | NULL\r |
| 573 | );\r |
| 574 | if (!EFI_ERROR (Status)) {\r |
| 575 | \r |
| 576 | Status = gBS->CloseProtocol (\r |
| 577 | Handle,\r |
| 578 | &gEfiUnixIoProtocolGuid,\r |
| 579 | This->DriverBindingHandle,\r |
| 580 | Handle\r |
| 581 | );\r |
| 582 | \r |
| 583 | //\r |
| 584 | // Shut down our device\r |
| 585 | //\r |
| 586 | Private->UnixThunk->Close (Private->fd);\r |
| 587 | \r |
| 588 | //\r |
| 589 | // Free our instance data\r |
| 590 | //\r |
| 591 | FreeUnicodeStringTable (Private->ControllerNameTable);\r |
| 592 | \r |
| 593 | gBS->FreePool (Private);\r |
| 594 | }\r |
| 595 | \r |
| 596 | return Status;\r |
| 597 | }\r |
| 598 | \r |
| 599 | STATIC\r |
| 600 | CHAR16 *\r |
| 601 | GetNextElementPastTerminator (\r |
| 602 | IN CHAR16 *EnvironmentVariable,\r |
| 603 | IN CHAR16 Terminator\r |
| 604 | )\r |
| 605 | /*++\r |
| 606 | \r |
| 607 | Routine Description:\r |
| 608 | \r |
| 609 | Worker function to parse environment variables.\r |
| 610 | \r |
| 611 | Arguments:\r |
| 612 | EnvironmentVariable - Envirnment variable to parse.\r |
| 613 | \r |
| 614 | Terminator - Terminator to parse for.\r |
| 615 | \r |
| 616 | Returns: \r |
| 617 | \r |
| 618 | Pointer to next eliment past the first occurence of Terminator or the '\0'\r |
| 619 | at the end of the string.\r |
| 620 | \r |
| 621 | --*/\r |
| 622 | {\r |
| 623 | CHAR16 *Ptr;\r |
| 624 | \r |
| 625 | for (Ptr = EnvironmentVariable; *Ptr != '\0'; Ptr++) {\r |
| 626 | if (*Ptr == Terminator) {\r |
| 627 | Ptr++;\r |
| 628 | break;\r |
| 629 | }\r |
| 630 | }\r |
| 631 | \r |
| 632 | return Ptr;\r |
| 633 | }\r |
| 634 | \r |
| 635 | STATIC\r |
| 636 | EFI_STATUS\r |
| 637 | UnixBlockIoCreateMapping (\r |
| 638 | IN EFI_UNIX_IO_PROTOCOL *UnixIo,\r |
| 639 | IN EFI_HANDLE EfiDeviceHandle,\r |
| 640 | IN CHAR16 *Filename,\r |
| 641 | IN BOOLEAN ReadOnly,\r |
| 642 | IN BOOLEAN RemovableMedia,\r |
| 643 | IN UINTN NumberOfBlocks,\r |
| 644 | IN UINTN BlockSize\r |
| 645 | )\r |
| 646 | /*++\r |
| 647 | \r |
| 648 | Routine Description:\r |
| 649 | \r |
| 650 | TODO: Add function description\r |
| 651 | \r |
| 652 | Arguments:\r |
| 653 | \r |
| 654 | UnixIo - TODO: add argument description\r |
| 655 | EfiDeviceHandle - TODO: add argument description\r |
| 656 | Filename - TODO: add argument description\r |
| 657 | ReadOnly - TODO: add argument description\r |
| 658 | RemovableMedia - TODO: add argument description\r |
| 659 | NumberOfBlocks - TODO: add argument description\r |
| 660 | BlockSize - TODO: add argument description\r |
| 661 | DeviceType - TODO: add argument description\r |
| 662 | \r |
| 663 | Returns:\r |
| 664 | \r |
| 665 | TODO: add return values\r |
| 666 | \r |
| 667 | --*/\r |
| 668 | {\r |
| 669 | EFI_STATUS Status;\r |
| 670 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r |
| 671 | UNIX_BLOCK_IO_PRIVATE *Private;\r |
| 672 | UINTN Index;\r |
| 673 | \r |
| 674 | Status = gBS->AllocatePool (\r |
| 675 | EfiBootServicesData,\r |
| 676 | sizeof (UNIX_BLOCK_IO_PRIVATE),\r |
| 677 | (void *)&Private\r |
| 678 | );\r |
| 679 | ASSERT_EFI_ERROR (Status);\r |
| 680 | \r |
| 681 | EfiInitializeLock (&Private->Lock, TPL_NOTIFY);\r |
| 682 | \r |
| 683 | Private->UnixThunk = UnixIo->UnixThunk;\r |
| 684 | \r |
| 685 | Private->Signature = UNIX_BLOCK_IO_PRIVATE_SIGNATURE;\r |
| 686 | Private->LastBlock = NumberOfBlocks - 1;\r |
| 687 | Private->BlockSize = BlockSize;\r |
| 688 | \r |
| 689 | for (Index = 0; Filename[Index] != 0; Index++) {\r |
| 690 | Private->Filename[Index] = Filename[Index];\r |
| 691 | }\r |
| 692 | \r |
| 693 | Private->Filename[Index] = 0;\r |
| 694 | \r |
| 695 | Private->Mode = (ReadOnly ? O_RDONLY : O_RDWR);\r |
| 696 | \r |
| 697 | Private->NumberOfBlocks = NumberOfBlocks;\r |
| 698 | Private->fd = -1;\r |
| 699 | \r |
| 700 | Private->ControllerNameTable = NULL;\r |
| 701 | \r |
| 702 | AddUnicodeString (\r |
| 703 | "eng",\r |
| 704 | gUnixBlockIoComponentName.SupportedLanguages,\r |
| 705 | &Private->ControllerNameTable,\r |
| 706 | Filename\r |
| 707 | );\r |
| 708 | \r |
| 709 | BlockIo = &Private->BlockIo;\r |
| 710 | BlockIo->Revision = EFI_BLOCK_IO_PROTOCOL_REVISION;\r |
| 711 | BlockIo->Media = &Private->Media;\r |
| 712 | BlockIo->Media->BlockSize = Private->BlockSize;\r |
| 713 | BlockIo->Media->LastBlock = Private->NumberOfBlocks - 1;\r |
| 714 | BlockIo->Media->MediaId = 0;;\r |
| 715 | \r |
| 716 | BlockIo->Reset = UnixBlockIoResetBlock;\r |
| 717 | BlockIo->ReadBlocks = UnixBlockIoReadBlocks;\r |
| 718 | BlockIo->WriteBlocks = UnixBlockIoWriteBlocks;\r |
| 719 | BlockIo->FlushBlocks = UnixBlockIoFlushBlocks;\r |
| 720 | \r |
| 721 | BlockIo->Media->ReadOnly = ReadOnly;\r |
| 722 | BlockIo->Media->RemovableMedia = RemovableMedia;\r |
| 723 | BlockIo->Media->LogicalPartition = FALSE;\r |
| 724 | BlockIo->Media->MediaPresent = TRUE;\r |
| 725 | BlockIo->Media->WriteCaching = FALSE;\r |
| 726 | \r |
| 727 | BlockIo->Media->IoAlign = 1;\r |
| 728 | \r |
| 729 | Private->EfiHandle = EfiDeviceHandle;\r |
| 730 | Status = UnixBlockIoOpenDevice (Private);\r |
| 731 | if (!EFI_ERROR (Status)) {\r |
| 732 | \r |
| 733 | Status = gBS->InstallMultipleProtocolInterfaces (\r |
| 734 | &Private->EfiHandle,\r |
| 735 | &gEfiBlockIoProtocolGuid,\r |
| 736 | &Private->BlockIo,\r |
| 737 | NULL\r |
| 738 | );\r |
| 739 | if (EFI_ERROR (Status)) {\r |
| 740 | FreeUnicodeStringTable (Private->ControllerNameTable);\r |
| 741 | gBS->FreePool (Private);\r |
| 742 | }\r |
| 743 | \r |
| 744 | DEBUG ((EFI_D_ERROR, "BlockDevice added: %s\n", Filename));\r |
| 745 | }\r |
| 746 | \r |
| 747 | return Status;\r |
| 748 | }\r |
| 749 | \r |
| 750 | STATIC\r |
| 751 | EFI_STATUS\r |
| 752 | UnixBlockIoOpenDevice (\r |
| 753 | UNIX_BLOCK_IO_PRIVATE *Private\r |
| 754 | )\r |
| 755 | /*++\r |
| 756 | \r |
| 757 | Routine Description:\r |
| 758 | \r |
| 759 | TODO: Add function description\r |
| 760 | \r |
| 761 | Arguments:\r |
| 762 | \r |
| 763 | Private - TODO: add argument description\r |
| 764 | \r |
| 765 | Returns:\r |
| 766 | \r |
| 767 | TODO: add return values\r |
| 768 | \r |
| 769 | --*/\r |
| 770 | {\r |
| 771 | EFI_STATUS Status;\r |
| 772 | UINT64 FileSize;\r |
| 773 | UINT64 EndOfFile;\r |
| 774 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r |
| 775 | \r |
| 776 | BlockIo = &Private->BlockIo;\r |
| 777 | EfiAcquireLock (&Private->Lock);\r |
| 778 | \r |
| 779 | //\r |
| 780 | // If the device is already opened, close it\r |
| 781 | //\r |
| 782 | if (Private->fd >= 0) {\r |
| 783 | BlockIo->Reset (BlockIo, FALSE);\r |
| 784 | }\r |
| 785 | \r |
| 786 | //\r |
| 787 | // Open the device\r |
| 788 | //\r |
| 789 | Private->fd = Private->UnixThunk->Open\r |
| 790 | (Private->Filename, Private->Mode, 0644);\r |
| 791 | \r |
| 792 | if (Private->fd < 0) {\r |
| 793 | DEBUG ((EFI_D_INFO, "PlOpenBlock: Could not open %s\n",\r |
| 794 | Private->Filename));\r |
| 795 | BlockIo->Media->MediaPresent = FALSE;\r |
| 796 | Status = EFI_NO_MEDIA;\r |
| 797 | goto Done;\r |
| 798 | }\r |
| 799 | \r |
| 800 | if (!BlockIo->Media->MediaPresent) {\r |
| 801 | //\r |
| 802 | // BugBug: try to emulate if a CD appears - notify drivers to check it out\r |
| 803 | //\r |
| 804 | BlockIo->Media->MediaPresent = TRUE;\r |
| 805 | EfiReleaseLock (&Private->Lock);\r |
| 806 | EfiAcquireLock (&Private->Lock);\r |
| 807 | }\r |
| 808 | \r |
| 809 | //\r |
| 810 | // get the size of the file\r |
| 811 | //\r |
| 812 | Status = SetFilePointer64 (Private, 0, &FileSize, SEEK_END);\r |
| 813 | \r |
| 814 | if (EFI_ERROR (Status)) {\r |
| 815 | FileSize = MultU64x32 (Private->NumberOfBlocks, Private->BlockSize);\r |
| 816 | DEBUG ((EFI_D_ERROR, "PlOpenBlock: Could not get filesize of %s\n", Private->Filename));\r |
| 817 | Status = EFI_UNSUPPORTED;\r |
| 818 | goto Done;\r |
| 819 | }\r |
| 820 | \r |
| 821 | if (Private->NumberOfBlocks == 0) {\r |
| 822 | Private->NumberOfBlocks = DivU64x32 (FileSize, Private->BlockSize);\r |
| 823 | }\r |
| 824 | \r |
| 825 | EndOfFile = MultU64x32 (Private->NumberOfBlocks, Private->BlockSize);\r |
| 826 | \r |
| 827 | if (FileSize != EndOfFile) {\r |
| 828 | //\r |
| 829 | // file is not the proper size, change it\r |
| 830 | //\r |
| 831 | DEBUG ((EFI_D_INIT, "PlOpenBlock: Initializing block device: %a\n", Private->Filename));\r |
| 832 | \r |
| 833 | //\r |
| 834 | // first set it to 0\r |
| 835 | //\r |
| 836 | Private->UnixThunk->FTruncate (Private->fd, 0);\r |
| 837 | \r |
| 838 | //\r |
| 839 | // then set it to the needed file size (OS will zero fill it)\r |
| 840 | //\r |
| 841 | Private->UnixThunk->FTruncate (Private->fd, EndOfFile);\r |
| 842 | }\r |
| 843 | \r |
| 844 | DEBUG ((EFI_D_INIT, "%HPlOpenBlock: opened %s%N\n", Private->Filename));\r |
| 845 | Status = EFI_SUCCESS;\r |
| 846 | \r |
| 847 | Done:\r |
| 848 | if (EFI_ERROR (Status)) {\r |
| 849 | if (Private->fd >= 0) {\r |
| 850 | BlockIo->Reset (BlockIo, FALSE);\r |
| 851 | }\r |
| 852 | }\r |
| 853 | \r |
| 854 | EfiReleaseLock (&Private->Lock);\r |
| 855 | return Status;\r |
| 856 | }\r |
| 857 | \r |
| 858 | STATIC\r |
| 859 | EFI_STATUS\r |
| 860 | UnixBlockIoError (\r |
| 861 | IN UNIX_BLOCK_IO_PRIVATE *Private\r |
| 862 | )\r |
| 863 | /*++\r |
| 864 | \r |
| 865 | Routine Description:\r |
| 866 | \r |
| 867 | TODO: Add function description\r |
| 868 | \r |
| 869 | Arguments:\r |
| 870 | \r |
| 871 | Private - TODO: add argument description\r |
| 872 | \r |
| 873 | Returns:\r |
| 874 | \r |
| 875 | TODO: add return values\r |
| 876 | \r |
| 877 | --*/\r |
| 878 | {\r |
| 879 | return EFI_DEVICE_ERROR;\r |
| 880 | \r |
| 881 | #if 0\r |
| 882 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r |
| 883 | EFI_STATUS Status;\r |
| 884 | BOOLEAN ReinstallBlockIoFlag;\r |
| 885 | \r |
| 886 | \r |
| 887 | BlockIo = &Private->BlockIo;\r |
| 888 | \r |
| 889 | switch (Private->UnixThunk->GetLastError ()) {\r |
| 890 | \r |
| 891 | case ERROR_NOT_READY:\r |
| 892 | Status = EFI_NO_MEDIA;\r |
| 893 | BlockIo->Media->ReadOnly = FALSE;\r |
| 894 | BlockIo->Media->MediaPresent = FALSE;\r |
| 895 | ReinstallBlockIoFlag = FALSE;\r |
| 896 | break;\r |
| 897 | \r |
| 898 | case ERROR_WRONG_DISK:\r |
| 899 | BlockIo->Media->ReadOnly = FALSE;\r |
| 900 | BlockIo->Media->MediaPresent = TRUE;\r |
| 901 | BlockIo->Media->MediaId += 1;\r |
| 902 | ReinstallBlockIoFlag = TRUE;\r |
| 903 | Status = EFI_MEDIA_CHANGED;\r |
| 904 | break;\r |
| 905 | \r |
| 906 | case ERROR_WRITE_PROTECT:\r |
| 907 | BlockIo->Media->ReadOnly = TRUE;\r |
| 908 | ReinstallBlockIoFlag = FALSE;\r |
| 909 | Status = EFI_WRITE_PROTECTED;\r |
| 910 | break;\r |
| 911 | \r |
| 912 | default:\r |
| 913 | ReinstallBlockIoFlag = FALSE;\r |
| 914 | Status = EFI_DEVICE_ERROR;\r |
| 915 | break;\r |
| 916 | }\r |
| 917 | \r |
| 918 | if (ReinstallBlockIoFlag) {\r |
| 919 | BlockIo->Reset (BlockIo, FALSE);\r |
| 920 | \r |
| 921 | gBS->ReinstallProtocolInterface (\r |
| 922 | Private->EfiHandle,\r |
| 923 | &gEfiBlockIoProtocolGuid,\r |
| 924 | BlockIo,\r |
| 925 | BlockIo\r |
| 926 | );\r |
| 927 | }\r |
| 928 | \r |
| 929 | return Status;\r |
| 930 | #endif\r |
| 931 | }\r |
| 932 | \r |
| 933 | STATIC\r |
| 934 | EFI_STATUS\r |
| 935 | UnixBlockIoReadWriteCommon (\r |
| 936 | IN UNIX_BLOCK_IO_PRIVATE *Private,\r |
| 937 | IN UINT32 MediaId,\r |
| 938 | IN EFI_LBA Lba,\r |
| 939 | IN UINTN BufferSize,\r |
| 940 | IN VOID *Buffer,\r |
| 941 | IN CHAR8 *CallerName\r |
| 942 | )\r |
| 943 | /*++\r |
| 944 | \r |
| 945 | Routine Description:\r |
| 946 | \r |
| 947 | TODO: Add function description\r |
| 948 | \r |
| 949 | Arguments:\r |
| 950 | \r |
| 951 | Private - TODO: add argument description\r |
| 952 | MediaId - TODO: add argument description\r |
| 953 | Lba - TODO: add argument description\r |
| 954 | BufferSize - TODO: add argument description\r |
| 955 | Buffer - TODO: add argument description\r |
| 956 | CallerName - TODO: add argument description\r |
| 957 | \r |
| 958 | Returns:\r |
| 959 | \r |
| 960 | EFI_NO_MEDIA - TODO: Add description for return value\r |
| 961 | EFI_MEDIA_CHANGED - TODO: Add description for return value\r |
| 962 | EFI_INVALID_PARAMETER - TODO: Add description for return value\r |
| 963 | EFI_SUCCESS - TODO: Add description for return value\r |
| 964 | EFI_BAD_BUFFER_SIZE - TODO: Add description for return value\r |
| 965 | EFI_INVALID_PARAMETER - TODO: Add description for return value\r |
| 966 | EFI_SUCCESS - TODO: Add description for return value\r |
| 967 | \r |
| 968 | --*/\r |
| 969 | {\r |
| 970 | EFI_STATUS Status;\r |
| 971 | UINTN BlockSize;\r |
| 972 | UINT64 LastBlock;\r |
| 973 | INT64 DistanceToMove;\r |
| 974 | UINT64 DistanceMoved;\r |
| 975 | \r |
| 976 | if (Private->fd < 0) {\r |
| 977 | Status = UnixBlockIoOpenDevice (Private);\r |
| 978 | if (EFI_ERROR (Status)) {\r |
| 979 | return Status;\r |
| 980 | }\r |
| 981 | }\r |
| 982 | \r |
| 983 | if (!Private->Media.MediaPresent) {\r |
| 984 | DEBUG ((EFI_D_INIT, "%s: No Media\n", CallerName));\r |
| 985 | return EFI_NO_MEDIA;\r |
| 986 | }\r |
| 987 | \r |
| 988 | if (Private->Media.MediaId != MediaId) {\r |
| 989 | return EFI_MEDIA_CHANGED;\r |
| 990 | }\r |
| 991 | \r |
| 992 | if ((UINT32) Buffer % Private->Media.IoAlign != 0) {\r |
| 993 | return EFI_INVALID_PARAMETER;\r |
| 994 | }\r |
| 995 | \r |
| 996 | //\r |
| 997 | // Verify buffer size\r |
| 998 | //\r |
| 999 | BlockSize = Private->BlockSize;\r |
| 1000 | if (BufferSize == 0) {\r |
| 1001 | DEBUG ((EFI_D_INIT, "%s: Zero length read\n", CallerName));\r |
| 1002 | return EFI_SUCCESS;\r |
| 1003 | }\r |
| 1004 | \r |
| 1005 | if ((BufferSize % BlockSize) != 0) {\r |
| 1006 | DEBUG ((EFI_D_INIT, "%s: Invalid read size\n", CallerName));\r |
| 1007 | return EFI_BAD_BUFFER_SIZE;\r |
| 1008 | }\r |
| 1009 | \r |
| 1010 | LastBlock = Lba + (BufferSize / BlockSize) - 1;\r |
| 1011 | if (LastBlock > Private->LastBlock) {\r |
| 1012 | DEBUG ((EFI_D_INIT, "ReadBlocks: Attempted to read off end of device\n"));\r |
| 1013 | return EFI_INVALID_PARAMETER;\r |
| 1014 | }\r |
| 1015 | //\r |
| 1016 | // Seek to End of File\r |
| 1017 | //\r |
| 1018 | DistanceToMove = MultU64x32 (Lba, BlockSize);\r |
| 1019 | Status = SetFilePointer64 (Private, DistanceToMove, &DistanceMoved, SEEK_SET);\r |
| 1020 | \r |
| 1021 | if (EFI_ERROR (Status)) {\r |
| 1022 | DEBUG ((EFI_D_INIT, "WriteBlocks: SetFilePointer failed\n"));\r |
| 1023 | return UnixBlockIoError (Private);\r |
| 1024 | }\r |
| 1025 | \r |
| 1026 | return EFI_SUCCESS;\r |
| 1027 | }\r |
| 1028 | \r |
| 1029 | STATIC\r |
| 1030 | EFI_STATUS\r |
| 1031 | EFIAPI\r |
| 1032 | UnixBlockIoReadBlocks (\r |
| 1033 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
| 1034 | IN UINT32 MediaId,\r |
| 1035 | IN EFI_LBA Lba,\r |
| 1036 | IN UINTN BufferSize,\r |
| 1037 | OUT VOID *Buffer\r |
| 1038 | )\r |
| 1039 | /*++\r |
| 1040 | \r |
| 1041 | Routine Description:\r |
| 1042 | Read BufferSize bytes from Lba into Buffer.\r |
| 1043 | \r |
| 1044 | Arguments:\r |
| 1045 | This - Protocol instance pointer.\r |
| 1046 | MediaId - Id of the media, changes every time the media is replaced.\r |
| 1047 | Lba - The starting Logical Block Address to read from\r |
| 1048 | BufferSize - Size of Buffer, must be a multiple of device block size.\r |
| 1049 | Buffer - Buffer containing read data\r |
| 1050 | \r |
| 1051 | Returns:\r |
| 1052 | EFI_SUCCESS - The data was read correctly from the device.\r |
| 1053 | EFI_DEVICE_ERROR - The device reported an error while performing the read.\r |
| 1054 | EFI_NO_MEDIA - There is no media in the device.\r |
| 1055 | EFI_MEDIA_CHANGED - The MediaId does not matched the current device.\r |
| 1056 | EFI_BAD_BUFFER_SIZE - The Buffer was not a multiple of the block size of the \r |
| 1057 | device.\r |
| 1058 | EFI_INVALID_PARAMETER - The read request contains device addresses that are not \r |
| 1059 | valid for the device.\r |
| 1060 | \r |
| 1061 | --*/\r |
| 1062 | {\r |
| 1063 | UNIX_BLOCK_IO_PRIVATE *Private;\r |
| 1064 | ssize_t len;\r |
| 1065 | EFI_STATUS Status;\r |
| 1066 | EFI_TPL OldTpl;\r |
| 1067 | \r |
| 1068 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
| 1069 | \r |
| 1070 | Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r |
| 1071 | \r |
| 1072 | Status = UnixBlockIoReadWriteCommon (Private, MediaId, Lba, BufferSize, Buffer, "UnixReadBlocks");\r |
| 1073 | if (EFI_ERROR (Status)) {\r |
| 1074 | goto Done;\r |
| 1075 | }\r |
| 1076 | \r |
| 1077 | len = Private->UnixThunk->Read (Private->fd, Buffer, BufferSize);\r |
| 1078 | if (len != BufferSize) {\r |
| 1079 | DEBUG ((EFI_D_INIT, "ReadBlocks: ReadFile failed.\n"));\r |
| 1080 | Status = UnixBlockIoError (Private);\r |
| 1081 | goto Done;\r |
| 1082 | }\r |
| 1083 | \r |
| 1084 | //\r |
| 1085 | // If we wrote then media is present.\r |
| 1086 | //\r |
| 1087 | This->Media->MediaPresent = TRUE;\r |
| 1088 | Status = EFI_SUCCESS;\r |
| 1089 | \r |
| 1090 | Done:\r |
| 1091 | gBS->RestoreTPL (OldTpl);\r |
| 1092 | return Status;\r |
| 1093 | }\r |
| 1094 | \r |
| 1095 | STATIC\r |
| 1096 | EFI_STATUS\r |
| 1097 | EFIAPI\r |
| 1098 | UnixBlockIoWriteBlocks (\r |
| 1099 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
| 1100 | IN UINT32 MediaId,\r |
| 1101 | IN EFI_LBA Lba,\r |
| 1102 | IN UINTN BufferSize,\r |
| 1103 | IN VOID *Buffer\r |
| 1104 | )\r |
| 1105 | /*++\r |
| 1106 | \r |
| 1107 | Routine Description:\r |
| 1108 | Write BufferSize bytes from Lba into Buffer.\r |
| 1109 | \r |
| 1110 | Arguments:\r |
| 1111 | This - Protocol instance pointer.\r |
| 1112 | MediaId - Id of the media, changes every time the media is replaced.\r |
| 1113 | Lba - The starting Logical Block Address to read from\r |
| 1114 | BufferSize - Size of Buffer, must be a multiple of device block size.\r |
| 1115 | Buffer - Buffer containing read data\r |
| 1116 | \r |
| 1117 | Returns:\r |
| 1118 | EFI_SUCCESS - The data was written correctly to the device.\r |
| 1119 | EFI_WRITE_PROTECTED - The device can not be written to.\r |
| 1120 | EFI_DEVICE_ERROR - The device reported an error while performing the write.\r |
| 1121 | EFI_NO_MEDIA - There is no media in the device.\r |
| 1122 | EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.\r |
| 1123 | EFI_BAD_BUFFER_SIZE - The Buffer was not a multiple of the block size of the \r |
| 1124 | device.\r |
| 1125 | EFI_INVALID_PARAMETER - The write request contains a LBA that is not \r |
| 1126 | valid for the device.\r |
| 1127 | \r |
| 1128 | --*/\r |
| 1129 | {\r |
| 1130 | UNIX_BLOCK_IO_PRIVATE *Private;\r |
| 1131 | ssize_t len;\r |
| 1132 | EFI_STATUS Status;\r |
| 1133 | EFI_TPL OldTpl;\r |
| 1134 | \r |
| 1135 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
| 1136 | \r |
| 1137 | Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r |
| 1138 | \r |
| 1139 | Status = UnixBlockIoReadWriteCommon (Private, MediaId, Lba, BufferSize, Buffer, "UnixWriteBlocks");\r |
| 1140 | if (EFI_ERROR (Status)) {\r |
| 1141 | goto Done;\r |
| 1142 | }\r |
| 1143 | \r |
| 1144 | len = Private->UnixThunk->Write (Private->fd, Buffer, BufferSize);\r |
| 1145 | if (len != BufferSize) {\r |
| 1146 | DEBUG ((EFI_D_INIT, "ReadBlocks: WriteFile failed.\n"));\r |
| 1147 | Status = UnixBlockIoError (Private);\r |
| 1148 | goto Done;\r |
| 1149 | }\r |
| 1150 | \r |
| 1151 | //\r |
| 1152 | // If the write succeeded, we are not write protected and media is present.\r |
| 1153 | //\r |
| 1154 | This->Media->MediaPresent = TRUE;\r |
| 1155 | This->Media->ReadOnly = FALSE;\r |
| 1156 | Status = EFI_SUCCESS;\r |
| 1157 | \r |
| 1158 | Done:\r |
| 1159 | gBS->RestoreTPL (OldTpl);\r |
| 1160 | return Status;\r |
| 1161 | }\r |
| 1162 | \r |
| 1163 | STATIC\r |
| 1164 | EFI_STATUS\r |
| 1165 | EFIAPI\r |
| 1166 | UnixBlockIoFlushBlocks (\r |
| 1167 | IN EFI_BLOCK_IO_PROTOCOL *This\r |
| 1168 | )\r |
| 1169 | /*++\r |
| 1170 | \r |
| 1171 | Routine Description:\r |
| 1172 | Flush the Block Device.\r |
| 1173 | \r |
| 1174 | Arguments:\r |
| 1175 | This - Protocol instance pointer.\r |
| 1176 | \r |
| 1177 | Returns:\r |
| 1178 | EFI_SUCCESS - All outstanding data was written to the device\r |
| 1179 | EFI_DEVICE_ERROR - The device reported an error while writting back the data\r |
| 1180 | EFI_NO_MEDIA - There is no media in the device.\r |
| 1181 | \r |
| 1182 | --*/\r |
| 1183 | {\r |
| 1184 | return EFI_SUCCESS;\r |
| 1185 | }\r |
| 1186 | \r |
| 1187 | STATIC\r |
| 1188 | EFI_STATUS\r |
| 1189 | EFIAPI\r |
| 1190 | UnixBlockIoResetBlock (\r |
| 1191 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
| 1192 | IN BOOLEAN ExtendedVerification\r |
| 1193 | )\r |
| 1194 | /*++\r |
| 1195 | \r |
| 1196 | Routine Description:\r |
| 1197 | Reset the Block Device.\r |
| 1198 | \r |
| 1199 | Arguments:\r |
| 1200 | This - Protocol instance pointer.\r |
| 1201 | ExtendedVerification - Driver may perform diagnostics on reset.\r |
| 1202 | \r |
| 1203 | Returns:\r |
| 1204 | EFI_SUCCESS - The device was reset.\r |
| 1205 | EFI_DEVICE_ERROR - The device is not functioning properly and could \r |
| 1206 | not be reset.\r |
| 1207 | \r |
| 1208 | --*/\r |
| 1209 | {\r |
| 1210 | UNIX_BLOCK_IO_PRIVATE *Private;\r |
| 1211 | EFI_TPL OldTpl;\r |
| 1212 | \r |
| 1213 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
| 1214 | \r |
| 1215 | Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r |
| 1216 | \r |
| 1217 | if (Private->fd >= 0) {\r |
| 1218 | Private->UnixThunk->Close (Private->fd);\r |
| 1219 | Private->fd = -1;\r |
| 1220 | }\r |
| 1221 | \r |
| 1222 | gBS->RestoreTPL (OldTpl);\r |
| 1223 | \r |
| 1224 | return EFI_SUCCESS;\r |
| 1225 | }\r |
| 1226 | \r |
| 1227 | UINTN\r |
| 1228 | Atoi (\r |
| 1229 | CHAR16 *String\r |
| 1230 | )\r |
| 1231 | /*++\r |
| 1232 | \r |
| 1233 | Routine Description:\r |
| 1234 | \r |
| 1235 | Convert a unicode string to a UINTN\r |
| 1236 | \r |
| 1237 | Arguments:\r |
| 1238 | \r |
| 1239 | String - Unicode string.\r |
| 1240 | \r |
| 1241 | Returns: \r |
| 1242 | \r |
| 1243 | UINTN of the number represented by String. \r |
| 1244 | \r |
| 1245 | --*/\r |
| 1246 | {\r |
| 1247 | UINTN Number;\r |
| 1248 | CHAR16 *Str;\r |
| 1249 | \r |
| 1250 | //\r |
| 1251 | // skip preceeding white space\r |
| 1252 | //\r |
| 1253 | Str = String;\r |
| 1254 | while ((*Str) && (*Str == ' ')) {\r |
| 1255 | Str++;\r |
| 1256 | }\r |
| 1257 | //\r |
| 1258 | // Convert ot a Number\r |
| 1259 | //\r |
| 1260 | Number = 0;\r |
| 1261 | while (*Str != '\0') {\r |
| 1262 | if ((*Str >= '0') && (*Str <= '9')) {\r |
| 1263 | Number = (Number * 10) +*Str - '0';\r |
| 1264 | } else {\r |
| 1265 | break;\r |
| 1266 | }\r |
| 1267 | \r |
| 1268 | Str++;\r |
| 1269 | }\r |
| 1270 | \r |
| 1271 | return Number;\r |
| 1272 | }\r |
| 1273 | \r |
| 1274 | EFI_STATUS\r |
| 1275 | SetFilePointer64 (\r |
| 1276 | IN UNIX_BLOCK_IO_PRIVATE *Private,\r |
| 1277 | IN INT64 DistanceToMove,\r |
| 1278 | OUT UINT64 *NewFilePointer,\r |
| 1279 | IN INTN MoveMethod\r |
| 1280 | )\r |
| 1281 | /*++\r |
| 1282 | \r |
| 1283 | This function extends the capability of SetFilePointer to accept 64 bit parameters\r |
| 1284 | \r |
| 1285 | --*/\r |
| 1286 | // TODO: function comment is missing 'Routine Description:'\r |
| 1287 | // TODO: function comment is missing 'Arguments:'\r |
| 1288 | // TODO: function comment is missing 'Returns:'\r |
| 1289 | // TODO: Private - add argument and description to function comment\r |
| 1290 | // TODO: DistanceToMove - add argument and description to function comment\r |
| 1291 | // TODO: NewFilePointer - add argument and description to function comment\r |
| 1292 | // TODO: MoveMethod - add argument and description to function comment\r |
| 1293 | {\r |
| 1294 | EFI_STATUS Status;\r |
| 1295 | off_t res;\r |
| 1296 | \r |
| 1297 | res = Private->UnixThunk->Lseek(Private->fd, DistanceToMove, MoveMethod);\r |
| 1298 | if (res == -1) {\r |
| 1299 | Status = EFI_INVALID_PARAMETER;\r |
| 1300 | }\r |
| 1301 | \r |
| 1302 | if (NewFilePointer != NULL) {\r |
| 1303 | *NewFilePointer = res;\r |
| 1304 | }\r |
| 1305 | \r |
| 1306 | return Status;\r |
| 1307 | }\r |
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