| | 1 | /** @file\r |
| | 2 | Fat File System driver routines that support EFI driver model.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2005 - 2014, Intel Corporation. All rights reserved.<BR>\r |
| | 5 | This program and the accompanying materials are licensed and made available\r |
| | 6 | under the terms and conditions of the BSD License which accompanies this\r |
| | 7 | 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 "Fat.h"\r |
| | 16 | \r |
| | 17 | /**\r |
| | 18 | \r |
| | 19 | Register Driver Binding protocol for this driver.\r |
| | 20 | \r |
| | 21 | @param ImageHandle - Handle for the image of this driver.\r |
| | 22 | @param SystemTable - Pointer to the EFI System Table.\r |
| | 23 | \r |
| | 24 | @retval EFI_SUCCESS - Driver loaded.\r |
| | 25 | @return other - Driver not loaded.\r |
| | 26 | \r |
| | 27 | **/\r |
| | 28 | EFI_STATUS\r |
| | 29 | EFIAPI\r |
| | 30 | FatEntryPoint (\r |
| | 31 | IN EFI_HANDLE ImageHandle,\r |
| | 32 | IN EFI_SYSTEM_TABLE *SystemTable\r |
| | 33 | );\r |
| | 34 | \r |
| | 35 | /**\r |
| | 36 | \r |
| | 37 | Unload function for this image. Uninstall DriverBinding protocol.\r |
| | 38 | \r |
| | 39 | @param ImageHandle - Handle for the image of this driver.\r |
| | 40 | \r |
| | 41 | @retval EFI_SUCCESS - Driver unloaded successfully.\r |
| | 42 | @return other - Driver can not unloaded.\r |
| | 43 | \r |
| | 44 | **/\r |
| | 45 | EFI_STATUS\r |
| | 46 | EFIAPI\r |
| | 47 | FatUnload (\r |
| | 48 | IN EFI_HANDLE ImageHandle\r |
| | 49 | );\r |
| | 50 | \r |
| | 51 | /**\r |
| | 52 | \r |
| | 53 | Test to see if this driver can add a file system to ControllerHandle.\r |
| | 54 | ControllerHandle must support both Disk IO and Block IO protocols.\r |
| | 55 | \r |
| | 56 | @param This - Protocol instance pointer.\r |
| | 57 | @param ControllerHandle - Handle of device to test.\r |
| | 58 | @param RemainingDevicePath - Not used.\r |
| | 59 | \r |
| | 60 | @retval EFI_SUCCESS - This driver supports this device.\r |
| | 61 | @retval EFI_ALREADY_STARTED - This driver is already running on this device.\r |
| | 62 | @return other - This driver does not support this device.\r |
| | 63 | \r |
| | 64 | **/\r |
| | 65 | EFI_STATUS\r |
| | 66 | EFIAPI\r |
| | 67 | FatDriverBindingSupported (\r |
| | 68 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 69 | IN EFI_HANDLE Controller,\r |
| | 70 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r |
| | 71 | );\r |
| | 72 | \r |
| | 73 | /**\r |
| | 74 | \r |
| | 75 | Start this driver on ControllerHandle by opening a Block IO and Disk IO\r |
| | 76 | protocol, reading Device Path. Add a Simple File System protocol to\r |
| | 77 | ControllerHandle if the media contains a valid file system.\r |
| | 78 | \r |
| | 79 | @param This - Protocol instance pointer.\r |
| | 80 | @param ControllerHandle - Handle of device to bind driver to.\r |
| | 81 | @param RemainingDevicePath - Not used.\r |
| | 82 | \r |
| | 83 | @retval EFI_SUCCESS - This driver is added to DeviceHandle.\r |
| | 84 | @retval EFI_ALREADY_STARTED - This driver is already running on DeviceHandle.\r |
| | 85 | @retval EFI_OUT_OF_RESOURCES - Can not allocate the memory.\r |
| | 86 | @return other - This driver does not support this device.\r |
| | 87 | \r |
| | 88 | **/\r |
| | 89 | EFI_STATUS\r |
| | 90 | EFIAPI\r |
| | 91 | FatDriverBindingStart (\r |
| | 92 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 93 | IN EFI_HANDLE Controller,\r |
| | 94 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r |
| | 95 | );\r |
| | 96 | \r |
| | 97 | /**\r |
| | 98 | \r |
| | 99 | Stop this driver on ControllerHandle.\r |
| | 100 | \r |
| | 101 | @param This - Protocol instance pointer.\r |
| | 102 | @param ControllerHandle - Handle of device to stop driver on.\r |
| | 103 | @param NumberOfChildren - Not used.\r |
| | 104 | @param ChildHandleBuffer - Not used.\r |
| | 105 | \r |
| | 106 | @retval EFI_SUCCESS - This driver is removed DeviceHandle.\r |
| | 107 | @return other - This driver was not removed from this device.\r |
| | 108 | \r |
| | 109 | **/\r |
| | 110 | EFI_STATUS\r |
| | 111 | EFIAPI\r |
| | 112 | FatDriverBindingStop (\r |
| | 113 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 114 | IN EFI_HANDLE Controller,\r |
| | 115 | IN UINTN NumberOfChildren,\r |
| | 116 | IN EFI_HANDLE *ChildHandleBuffer\r |
| | 117 | );\r |
| | 118 | \r |
| | 119 | //\r |
| | 120 | // DriverBinding protocol instance\r |
| | 121 | //\r |
| | 122 | EFI_DRIVER_BINDING_PROTOCOL gFatDriverBinding = {\r |
| | 123 | FatDriverBindingSupported,\r |
| | 124 | FatDriverBindingStart,\r |
| | 125 | FatDriverBindingStop,\r |
| | 126 | 0xa,\r |
| | 127 | NULL,\r |
| | 128 | NULL\r |
| | 129 | };\r |
| | 130 | \r |
| | 131 | /**\r |
| | 132 | \r |
| | 133 | Register Driver Binding protocol for this driver.\r |
| | 134 | \r |
| | 135 | @param ImageHandle - Handle for the image of this driver.\r |
| | 136 | @param SystemTable - Pointer to the EFI System Table.\r |
| | 137 | \r |
| | 138 | @retval EFI_SUCCESS - Driver loaded.\r |
| | 139 | @return other - Driver not loaded.\r |
| | 140 | \r |
| | 141 | **/\r |
| | 142 | EFI_STATUS\r |
| | 143 | EFIAPI\r |
| | 144 | FatEntryPoint (\r |
| | 145 | IN EFI_HANDLE ImageHandle,\r |
| | 146 | IN EFI_SYSTEM_TABLE *SystemTable\r |
| | 147 | )\r |
| | 148 | {\r |
| | 149 | EFI_STATUS Status;\r |
| | 150 | \r |
| | 151 | //\r |
| | 152 | // Initialize the EFI Driver Library\r |
| | 153 | //\r |
| | 154 | Status = EfiLibInstallDriverBindingComponentName2 (\r |
| | 155 | ImageHandle,\r |
| | 156 | SystemTable,\r |
| | 157 | &gFatDriverBinding,\r |
| | 158 | ImageHandle,\r |
| | 159 | &gFatComponentName,\r |
| | 160 | &gFatComponentName2\r |
| | 161 | );\r |
| | 162 | ASSERT_EFI_ERROR (Status);\r |
| | 163 | \r |
| | 164 | return Status;\r |
| | 165 | }\r |
| | 166 | \r |
| | 167 | /**\r |
| | 168 | \r |
| | 169 | Unload function for this image. Uninstall DriverBinding protocol.\r |
| | 170 | \r |
| | 171 | @param ImageHandle - Handle for the image of this driver.\r |
| | 172 | \r |
| | 173 | @retval EFI_SUCCESS - Driver unloaded successfully.\r |
| | 174 | @return other - Driver can not unloaded.\r |
| | 175 | \r |
| | 176 | **/\r |
| | 177 | EFI_STATUS\r |
| | 178 | EFIAPI\r |
| | 179 | FatUnload (\r |
| | 180 | IN EFI_HANDLE ImageHandle\r |
| | 181 | )\r |
| | 182 | {\r |
| | 183 | EFI_STATUS Status;\r |
| | 184 | EFI_HANDLE *DeviceHandleBuffer;\r |
| | 185 | UINTN DeviceHandleCount;\r |
| | 186 | UINTN Index;\r |
| | 187 | VOID *ComponentName;\r |
| | 188 | VOID *ComponentName2;\r |
| | 189 | \r |
| | 190 | Status = gBS->LocateHandleBuffer (\r |
| | 191 | AllHandles,\r |
| | 192 | NULL,\r |
| | 193 | NULL,\r |
| | 194 | &DeviceHandleCount,\r |
| | 195 | &DeviceHandleBuffer\r |
| | 196 | );\r |
| | 197 | if (EFI_ERROR (Status)) {\r |
| | 198 | return Status;\r |
| | 199 | }\r |
| | 200 | \r |
| | 201 | for (Index = 0; Index < DeviceHandleCount; Index++) {\r |
| | 202 | Status = EfiTestManagedDevice (DeviceHandleBuffer[Index], ImageHandle, &gEfiDiskIoProtocolGuid);\r |
| | 203 | if (!EFI_ERROR (Status)) {\r |
| | 204 | Status = gBS->DisconnectController (\r |
| | 205 | DeviceHandleBuffer[Index],\r |
| | 206 | ImageHandle,\r |
| | 207 | NULL\r |
| | 208 | );\r |
| | 209 | if (EFI_ERROR (Status)) {\r |
| | 210 | break;\r |
| | 211 | }\r |
| | 212 | }\r |
| | 213 | }\r |
| | 214 | \r |
| | 215 | if (Index == DeviceHandleCount) {\r |
| | 216 | //\r |
| | 217 | // Driver is stopped successfully.\r |
| | 218 | //\r |
| | 219 | Status = gBS->HandleProtocol (ImageHandle, &gEfiComponentNameProtocolGuid, &ComponentName);\r |
| | 220 | if (EFI_ERROR (Status)) {\r |
| | 221 | ComponentName = NULL;\r |
| | 222 | }\r |
| | 223 | \r |
| | 224 | Status = gBS->HandleProtocol (ImageHandle, &gEfiComponentName2ProtocolGuid, &ComponentName2);\r |
| | 225 | if (EFI_ERROR (Status)) {\r |
| | 226 | ComponentName2 = NULL;\r |
| | 227 | }\r |
| | 228 | \r |
| | 229 | if (ComponentName == NULL) {\r |
| | 230 | if (ComponentName2 == NULL) {\r |
| | 231 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
| | 232 | ImageHandle,\r |
| | 233 | &gEfiDriverBindingProtocolGuid, &gFatDriverBinding,\r |
| | 234 | NULL\r |
| | 235 | );\r |
| | 236 | } else {\r |
| | 237 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
| | 238 | ImageHandle,\r |
| | 239 | &gEfiDriverBindingProtocolGuid, &gFatDriverBinding,\r |
| | 240 | &gEfiComponentName2ProtocolGuid, ComponentName2,\r |
| | 241 | NULL\r |
| | 242 | );\r |
| | 243 | }\r |
| | 244 | } else {\r |
| | 245 | if (ComponentName2 == NULL) {\r |
| | 246 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
| | 247 | ImageHandle,\r |
| | 248 | &gEfiDriverBindingProtocolGuid, &gFatDriverBinding,\r |
| | 249 | &gEfiComponentNameProtocolGuid, ComponentName,\r |
| | 250 | NULL\r |
| | 251 | );\r |
| | 252 | } else {\r |
| | 253 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
| | 254 | ImageHandle,\r |
| | 255 | &gEfiDriverBindingProtocolGuid, &gFatDriverBinding,\r |
| | 256 | &gEfiComponentNameProtocolGuid, ComponentName,\r |
| | 257 | &gEfiComponentName2ProtocolGuid, ComponentName2,\r |
| | 258 | NULL\r |
| | 259 | );\r |
| | 260 | }\r |
| | 261 | }\r |
| | 262 | }\r |
| | 263 | \r |
| | 264 | if (DeviceHandleBuffer != NULL) {\r |
| | 265 | FreePool (DeviceHandleBuffer);\r |
| | 266 | }\r |
| | 267 | \r |
| | 268 | return Status;\r |
| | 269 | }\r |
| | 270 | \r |
| | 271 | /**\r |
| | 272 | \r |
| | 273 | Test to see if this driver can add a file system to ControllerHandle.\r |
| | 274 | ControllerHandle must support both Disk IO and Block IO protocols.\r |
| | 275 | \r |
| | 276 | @param This - Protocol instance pointer.\r |
| | 277 | @param ControllerHandle - Handle of device to test.\r |
| | 278 | @param RemainingDevicePath - Not used.\r |
| | 279 | \r |
| | 280 | @retval EFI_SUCCESS - This driver supports this device.\r |
| | 281 | @retval EFI_ALREADY_STARTED - This driver is already running on this device.\r |
| | 282 | @return other - This driver does not support this device.\r |
| | 283 | \r |
| | 284 | **/\r |
| | 285 | EFI_STATUS\r |
| | 286 | EFIAPI\r |
| | 287 | FatDriverBindingSupported (\r |
| | 288 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 289 | IN EFI_HANDLE ControllerHandle,\r |
| | 290 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r |
| | 291 | )\r |
| | 292 | {\r |
| | 293 | EFI_STATUS Status;\r |
| | 294 | EFI_DISK_IO_PROTOCOL *DiskIo;\r |
| | 295 | \r |
| | 296 | //\r |
| | 297 | // Open the IO Abstraction(s) needed to perform the supported test\r |
| | 298 | //\r |
| | 299 | Status = gBS->OpenProtocol (\r |
| | 300 | ControllerHandle,\r |
| | 301 | &gEfiDiskIoProtocolGuid,\r |
| | 302 | (VOID **) &DiskIo,\r |
| | 303 | This->DriverBindingHandle,\r |
| | 304 | ControllerHandle,\r |
| | 305 | EFI_OPEN_PROTOCOL_BY_DRIVER\r |
| | 306 | );\r |
| | 307 | \r |
| | 308 | if (EFI_ERROR (Status)) {\r |
| | 309 | return Status;\r |
| | 310 | }\r |
| | 311 | //\r |
| | 312 | // Close the I/O Abstraction(s) used to perform the supported test\r |
| | 313 | //\r |
| | 314 | gBS->CloseProtocol (\r |
| | 315 | ControllerHandle,\r |
| | 316 | &gEfiDiskIoProtocolGuid,\r |
| | 317 | This->DriverBindingHandle,\r |
| | 318 | ControllerHandle\r |
| | 319 | );\r |
| | 320 | \r |
| | 321 | //\r |
| | 322 | // Open the IO Abstraction(s) needed to perform the supported test\r |
| | 323 | //\r |
| | 324 | Status = gBS->OpenProtocol (\r |
| | 325 | ControllerHandle,\r |
| | 326 | &gEfiBlockIoProtocolGuid,\r |
| | 327 | NULL,\r |
| | 328 | This->DriverBindingHandle,\r |
| | 329 | ControllerHandle,\r |
| | 330 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r |
| | 331 | );\r |
| | 332 | \r |
| | 333 | return Status;\r |
| | 334 | }\r |
| | 335 | \r |
| | 336 | /**\r |
| | 337 | \r |
| | 338 | Start this driver on ControllerHandle by opening a Block IO and Disk IO\r |
| | 339 | protocol, reading Device Path. Add a Simple File System protocol to\r |
| | 340 | ControllerHandle if the media contains a valid file system.\r |
| | 341 | \r |
| | 342 | @param This - Protocol instance pointer.\r |
| | 343 | @param ControllerHandle - Handle of device to bind driver to.\r |
| | 344 | @param RemainingDevicePath - Not used.\r |
| | 345 | \r |
| | 346 | @retval EFI_SUCCESS - This driver is added to DeviceHandle.\r |
| | 347 | @retval EFI_ALREADY_STARTED - This driver is already running on DeviceHandle.\r |
| | 348 | @retval EFI_OUT_OF_RESOURCES - Can not allocate the memory.\r |
| | 349 | @return other - This driver does not support this device.\r |
| | 350 | \r |
| | 351 | **/\r |
| | 352 | EFI_STATUS\r |
| | 353 | EFIAPI\r |
| | 354 | FatDriverBindingStart (\r |
| | 355 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 356 | IN EFI_HANDLE ControllerHandle,\r |
| | 357 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r |
| | 358 | )\r |
| | 359 | {\r |
| | 360 | EFI_STATUS Status;\r |
| | 361 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r |
| | 362 | EFI_DISK_IO_PROTOCOL *DiskIo;\r |
| | 363 | EFI_DISK_IO2_PROTOCOL *DiskIo2;\r |
| | 364 | BOOLEAN LockedByMe;\r |
| | 365 | \r |
| | 366 | LockedByMe = FALSE;\r |
| | 367 | //\r |
| | 368 | // Acquire the lock.\r |
| | 369 | // If caller has already acquired the lock, cannot lock it again.\r |
| | 370 | //\r |
| | 371 | Status = FatAcquireLockOrFail ();\r |
| | 372 | if (!EFI_ERROR (Status)) {\r |
| | 373 | LockedByMe = TRUE;\r |
| | 374 | }\r |
| | 375 | \r |
| | 376 | Status = InitializeUnicodeCollationSupport (This->DriverBindingHandle);\r |
| | 377 | if (EFI_ERROR (Status)) {\r |
| | 378 | goto Exit;\r |
| | 379 | }\r |
| | 380 | //\r |
| | 381 | // Open our required BlockIo and DiskIo\r |
| | 382 | //\r |
| | 383 | Status = gBS->OpenProtocol (\r |
| | 384 | ControllerHandle,\r |
| | 385 | &gEfiBlockIoProtocolGuid,\r |
| | 386 | (VOID **) &BlockIo,\r |
| | 387 | This->DriverBindingHandle,\r |
| | 388 | ControllerHandle,\r |
| | 389 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r |
| | 390 | );\r |
| | 391 | if (EFI_ERROR (Status)) {\r |
| | 392 | goto Exit;\r |
| | 393 | }\r |
| | 394 | \r |
| | 395 | Status = gBS->OpenProtocol (\r |
| | 396 | ControllerHandle,\r |
| | 397 | &gEfiDiskIoProtocolGuid,\r |
| | 398 | (VOID **) &DiskIo,\r |
| | 399 | This->DriverBindingHandle,\r |
| | 400 | ControllerHandle,\r |
| | 401 | EFI_OPEN_PROTOCOL_BY_DRIVER\r |
| | 402 | );\r |
| | 403 | if (EFI_ERROR (Status)) {\r |
| | 404 | goto Exit;\r |
| | 405 | }\r |
| | 406 | \r |
| | 407 | Status = gBS->OpenProtocol (\r |
| | 408 | ControllerHandle,\r |
| | 409 | &gEfiDiskIo2ProtocolGuid,\r |
| | 410 | (VOID **) &DiskIo2,\r |
| | 411 | This->DriverBindingHandle,\r |
| | 412 | ControllerHandle,\r |
| | 413 | EFI_OPEN_PROTOCOL_BY_DRIVER\r |
| | 414 | );\r |
| | 415 | if (EFI_ERROR (Status)) {\r |
| | 416 | DiskIo2 = NULL;\r |
| | 417 | }\r |
| | 418 | \r |
| | 419 | //\r |
| | 420 | // Allocate Volume structure. In FatAllocateVolume(), Resources\r |
| | 421 | // are allocated with protocol installed and cached initialized\r |
| | 422 | //\r |
| | 423 | Status = FatAllocateVolume (ControllerHandle, DiskIo, DiskIo2, BlockIo);\r |
| | 424 | \r |
| | 425 | //\r |
| | 426 | // When the media changes on a device it will Reinstall the BlockIo interaface.\r |
| | 427 | // This will cause a call to our Stop(), and a subsequent reentrant call to our\r |
| | 428 | // Start() successfully. We should leave the device open when this happen.\r |
| | 429 | //\r |
| | 430 | if (EFI_ERROR (Status)) {\r |
| | 431 | Status = gBS->OpenProtocol (\r |
| | 432 | ControllerHandle,\r |
| | 433 | &gEfiSimpleFileSystemProtocolGuid,\r |
| | 434 | NULL,\r |
| | 435 | This->DriverBindingHandle,\r |
| | 436 | ControllerHandle,\r |
| | 437 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r |
| | 438 | );\r |
| | 439 | if (EFI_ERROR (Status)) {\r |
| | 440 | gBS->CloseProtocol (\r |
| | 441 | ControllerHandle,\r |
| | 442 | &gEfiDiskIoProtocolGuid,\r |
| | 443 | This->DriverBindingHandle,\r |
| | 444 | ControllerHandle\r |
| | 445 | );\r |
| | 446 | gBS->CloseProtocol (\r |
| | 447 | ControllerHandle,\r |
| | 448 | &gEfiDiskIo2ProtocolGuid,\r |
| | 449 | This->DriverBindingHandle,\r |
| | 450 | ControllerHandle\r |
| | 451 | );\r |
| | 452 | }\r |
| | 453 | }\r |
| | 454 | \r |
| | 455 | Exit:\r |
| | 456 | //\r |
| | 457 | // Unlock if locked by myself.\r |
| | 458 | //\r |
| | 459 | if (LockedByMe) {\r |
| | 460 | FatReleaseLock ();\r |
| | 461 | }\r |
| | 462 | return Status;\r |
| | 463 | }\r |
| | 464 | \r |
| | 465 | /**\r |
| | 466 | \r |
| | 467 | Stop this driver on ControllerHandle.\r |
| | 468 | \r |
| | 469 | @param This - Protocol instance pointer.\r |
| | 470 | @param ControllerHandle - Handle of device to stop driver on.\r |
| | 471 | @param NumberOfChildren - Not used.\r |
| | 472 | @param ChildHandleBuffer - Not used.\r |
| | 473 | \r |
| | 474 | @retval EFI_SUCCESS - This driver is removed DeviceHandle.\r |
| | 475 | @return other - This driver was not removed from this device.\r |
| | 476 | \r |
| | 477 | **/\r |
| | 478 | EFI_STATUS\r |
| | 479 | EFIAPI\r |
| | 480 | FatDriverBindingStop (\r |
| | 481 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
| | 482 | IN EFI_HANDLE ControllerHandle,\r |
| | 483 | IN UINTN NumberOfChildren,\r |
| | 484 | IN EFI_HANDLE *ChildHandleBuffer\r |
| | 485 | )\r |
| | 486 | {\r |
| | 487 | EFI_STATUS Status;\r |
| | 488 | EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *FileSystem;\r |
| | 489 | FAT_VOLUME *Volume;\r |
| | 490 | EFI_DISK_IO2_PROTOCOL *DiskIo2;\r |
| | 491 | \r |
| | 492 | DiskIo2 = NULL;\r |
| | 493 | //\r |
| | 494 | // Get our context back\r |
| | 495 | //\r |
| | 496 | Status = gBS->OpenProtocol (\r |
| | 497 | ControllerHandle,\r |
| | 498 | &gEfiSimpleFileSystemProtocolGuid,\r |
| | 499 | (VOID **) &FileSystem,\r |
| | 500 | This->DriverBindingHandle,\r |
| | 501 | ControllerHandle,\r |
| | 502 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r |
| | 503 | );\r |
| | 504 | \r |
| | 505 | if (!EFI_ERROR (Status)) {\r |
| | 506 | Volume = VOLUME_FROM_VOL_INTERFACE (FileSystem);\r |
| | 507 | DiskIo2 = Volume->DiskIo2;\r |
| | 508 | Status = FatAbandonVolume (Volume);\r |
| | 509 | }\r |
| | 510 | \r |
| | 511 | if (!EFI_ERROR (Status)) {\r |
| | 512 | if (DiskIo2 != NULL) {\r |
| | 513 | Status = gBS->CloseProtocol (\r |
| | 514 | ControllerHandle,\r |
| | 515 | &gEfiDiskIo2ProtocolGuid,\r |
| | 516 | This->DriverBindingHandle,\r |
| | 517 | ControllerHandle\r |
| | 518 | );\r |
| | 519 | ASSERT_EFI_ERROR (Status);\r |
| | 520 | }\r |
| | 521 | Status = gBS->CloseProtocol (\r |
| | 522 | ControllerHandle,\r |
| | 523 | &gEfiDiskIoProtocolGuid,\r |
| | 524 | This->DriverBindingHandle,\r |
| | 525 | ControllerHandle\r |
| | 526 | );\r |
| | 527 | ASSERT_EFI_ERROR (Status);\r |
| | 528 | }\r |
| | 529 | \r |
| | 530 | return Status;\r |
| | 531 | }\r |
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