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b9ec9330 QH |
1 | /*++\r |
2 | \r | |
149d6335 | 3 | Copyright (c) 2005 - 2013, Intel Corporation. All rights reserved.<BR>\r |
6163cc98 | 4 | This program and the accompanying materials are licensed and made available\r |
b9ec9330 QH |
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 | |
149d6335 | 76 | Status = FatCleanupVolume (Volume, Volume->Root, Status, NULL);\r |
b9ec9330 QH |
77 | FatReleaseLock ();\r |
78 | \r | |
79 | return Status;\r | |
80 | }\r |