MdePkg: Add UDF volume structure definitions

This patch adds basic volume structure definitions necessary to identify
a valid UDF file system on a block device, as specified by OSTA
Universal Disk Format Specification 2.60.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

diff --git a/MdePkg/Include/IndustryStandard/Udf.h b/MdePkg/Include/IndustryStandard/Udf.h
new file mode 100644 (file)
index 0000000..0febb4b
--- /dev/null
+++ b/MdePkg/Include/IndustryStandard/Udf.h
@@ -0,0 +1,60 @@
+/** @file\r
+  OSTA Universal Disk Format (UDF) definitions.\r
+\r
+  Copyright (C) 2014-2017 Paulo Alcantara <pcacjr@zytor.com>\r
+\r
+  This program and the accompanying materials are licensed and made available\r
+  under the terms and conditions of the BSD License which accompanies this\r
+  distribution.  The full text of the license may be found at\r
+  http://opensource.org/licenses/bsd-license.php\r
+\r
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT\r
+  WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+**/\r
+\r
+#ifndef __UDF_H__\r
+#define __UDF_H__\r
+\r
+#define UDF_BEA_IDENTIFIER   "BEA01"\r
+#define UDF_NSR2_IDENTIFIER  "NSR02"\r
+#define UDF_NSR3_IDENTIFIER  "NSR03"\r
+#define UDF_TEA_IDENTIFIER   "TEA01"\r
+\r
+#define UDF_LOGICAL_SECTOR_SHIFT  11\r
+#define UDF_LOGICAL_SECTOR_SIZE   ((UINT64)(1ULL << UDF_LOGICAL_SECTOR_SHIFT))\r
+#define UDF_VRS_START_OFFSET      ((UINT64)(16ULL << UDF_LOGICAL_SECTOR_SHIFT))\r
+\r
+#define _GET_TAG_ID(_Pointer) \\r
+  (((UDF_DESCRIPTOR_TAG *)(_Pointer))->TagIdentifier)\r
+\r
+#define IS_AVDP(_Pointer) \\r
+  ((BOOLEAN)(_GET_TAG_ID (_Pointer) == 2))\r
+\r
+#pragma pack(1)\r
+\r
+typedef struct {\r
+  UINT16  TagIdentifier;\r
+  UINT16  DescriptorVersion;\r
+  UINT8   TagChecksum;\r
+  UINT8   Reserved;\r
+  UINT16  TagSerialNumber;\r
+  UINT16  DescriptorCRC;\r
+  UINT16  DescriptorCRCLength;\r
+  UINT32  TagLocation;\r
+} UDF_DESCRIPTOR_TAG;\r
+\r
+typedef struct {\r
+  UINT32  ExtentLength;\r
+  UINT32  ExtentLocation;\r
+} UDF_EXTENT_AD;\r
+\r
+typedef struct {\r
+  UDF_DESCRIPTOR_TAG  DescriptorTag;\r
+  UDF_EXTENT_AD       MainVolumeDescriptorSequenceExtent;\r
+  UDF_EXTENT_AD       ReserveVolumeDescriptorSequenceExtent;\r
+  UINT8               Reserved[480];\r
+} UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER;\r
+\r
+#pragma pack()\r
+\r
+#endif\r