projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| b9ec9330 QH |
1 | /*++\r |
| 2 | \r | |
| dba03ba1 | 3 | Copyright (c) 2005 - 2009, Intel Corporation\r |
| b9ec9330 QH |
4 | All rights reserved. This program and the accompanying materials are licensed and made available\r |
| 5 | under the terms and conditions of the BSD License which accompanies this\r | |
| 6 | 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 | \r | |
| 13 | Module Name:\r | |
| 14 | \r | |
| 15 | OpenVolume.c\r | |
| 16 | \r | |
| 17 | Abstract:\r | |
| 18 | \r | |
| 19 | OpenVolume() function of Simple File System Protocol\r | |
| 20 | \r | |
| 21 | Revision History\r | |
| 22 | \r | |
| 23 | --*/\r | |
| 24 | \r | |
| 25 | #include "Fat.h"\r | |
| 26 | \r | |
| 27 | EFI_STATUS\r | |
| 28 | EFIAPI\r | |
| 29 | FatOpenVolume (\r | |
| 30 | IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,\r | |
| dba03ba1 | 31 | OUT EFI_FILE_PROTOCOL **File\r |
| b9ec9330 QH |
32 | )\r |
| 33 | /*++\r | |
| 34 | \r | |
| 35 | Routine Description:\r | |
| 36 | \r | |
| 37 | Implements Simple File System Protocol interface function OpenVolume().\r | |
| 38 | \r | |
| 39 | Arguments:\r | |
| 40 | \r | |
| 41 | This - Calling context.\r | |
| 42 | File - the Root Directory of the volume.\r | |
| 43 | \r | |
| 44 | Returns:\r | |
| 45 | \r | |
| 46 | EFI_OUT_OF_RESOURCES - Can not allocate the memory.\r | |
| 47 | EFI_VOLUME_CORRUPTED - The FAT type is error.\r | |
| 48 | EFI_SUCCESS - Open the volume successfully.\r | |
| 49 | \r | |
| 50 | --*/\r | |
| 51 | {\r | |
| 52 | EFI_STATUS Status;\r | |
| 53 | FAT_VOLUME *Volume;\r | |
| 54 | FAT_IFILE *IFile;\r | |
| 55 | \r | |
| 56 | Volume = VOLUME_FROM_VOL_INTERFACE (This);\r | |
| 57 | FatAcquireLock ();\r | |
| 58 | \r | |
| 59 | //\r | |
| 60 | // Open Root file\r | |
| 61 | //\r | |
| 62 | Status = FatOpenDirEnt (NULL, &Volume->RootDirEnt);\r | |
| 63 | if (EFI_ERROR (Status)) {\r | |
| 64 | goto Done;\r | |
| 65 | }\r | |
| 66 | //\r | |
| 67 | // Open a new instance to the root\r | |
| 68 | //\r | |
| 69 | Status = FatAllocateIFile (Volume->Root, &IFile);\r | |
| 70 | if (!EFI_ERROR (Status)) {\r | |
| 71 | *File = &IFile->Handle;\r | |
| 72 | }\r | |
| 73 | \r | |
| 74 | Done:\r | |
| 75 | \r | |
| 76 | Status = FatCleanupVolume (Volume, Volume->Root, Status);\r | |
| 77 | FatReleaseLock ();\r | |
| 78 | \r | |
| 79 | return Status;\r | |
| 80 | }\r |