From 377247d261f82cc9c26ccd06cc075594b12bd760 Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Sun, 20 Jun 2010 21:51:38 +0800
Subject: [PATCH] Working on a NTFS implementation (it's only going to be RO)

---
 Modules/Filesystems/NTFS/common.h | 88 +++++++++++++++++++++++++++++++
 Modules/Filesystems/NTFS/main.c   | 54 +++++++++++++++++++
 2 files changed, 142 insertions(+)
 create mode 100644 Modules/Filesystems/NTFS/common.h
 create mode 100644 Modules/Filesystems/NTFS/main.c

diff --git a/Modules/Filesystems/NTFS/common.h b/Modules/Filesystems/NTFS/common.h
new file mode 100644
index 00000000..ba25c18a
--- /dev/null
+++ b/Modules/Filesystems/NTFS/common.h
@@ -0,0 +1,88 @@
+/*
+ */
+#ifndef _COMMON_H_
+#define _COMMON_H_
+
+// === STRUCTURES ===
+typedef struct sNTFS_Disk
+{
+	
+}	tNTFS_Disk;
+
+typedef struct sNTFS_FILE_Header
+{
+	Uint32	Magic;	// 'FILE'
+	Uint16	UpdateSequenceOfs;
+	Uint16	UpdateSequenceSize;	// Size in words of the UpdateSequenceArray
+	
+	Uint64	LSN;	// $LogFile Sequence Number
+	
+	Uint16	SequenceNumber;
+	Uint16	HardLinkCount;	
+	Uint16	FirstAttribOfs;	// Size of header?
+	Uint16	Flags;	// 0: In Use, 1: Directory
+	
+	Uint32	RecordSize;		// Real Size of FILE Record
+	Uint32	RecordSpace;	// Allocated Size for FILE Record
+	
+	/**
+	 * Base address of the MFT containing this record
+	 */
+	Uint64	Reference;	// "File reference to the base FILE record" ???
+	
+	Uint16	NextAttribID;
+	union
+	{
+		// Only in XP
+		struct {
+			Uint16	AlignTo4Byte;
+			Uint16	RecordNumber;	// Number of this MFT Record
+			Uint16	UpdateSequenceNumber;
+			Uint16	UpdateSequenceArray[];
+		}	XP;
+		struct {
+			Uint16	UpdateSequenceNumber;
+			Uint16	UpdateSequenceArray[];
+		}	All;
+	} OSDep;	
+	
+}	tNTFS_FILE_Header;
+
+typedef struct sNTFS_FILE_Attrib
+{
+	Uint32	Type;	// See eNTFS_FILE_Attribs
+	Uint32	Size;	// Includes header
+	
+	Uint8	ResidentFlag;	// (What does this mean?)
+	Uint8	NameLength;
+	Uint16	NameOffset;
+	Uint16	Flags;	// 0: Compressed, 14: Encrypted, 15: Sparse
+	Uint16	AttributeID;
+	
+	union
+	{
+		struct {
+			Uint32	AttribLen;	// In words
+			Uint16	AttribOfs;
+			Uint8	IndexedFlag;
+			Uint8	Padding;
+			
+			Uint16	Name[];	// UTF-16
+			// Attribute Data
+		}	Resident;
+		struct {
+			Uint64	StartingVCN;
+			Uint64	LastVCN;
+			Uint16	DataRunOfs;
+			Uint16	CompressionUnitSize;
+			Uint32	Padding;
+			Uint64	AllocatedSize;
+			Uint64	RealSize;
+			Uint64	InitiatedSize;	// One assumes, ammount of actual data stored
+			Uint16	Name[];	// UTF-16
+			// Data Runs
+		}	NonResident;
+	};
+}	tNTFS_FILE_Attrib;
+
+#endif
diff --git a/Modules/Filesystems/NTFS/main.c b/Modules/Filesystems/NTFS/main.c
new file mode 100644
index 00000000..3fdab017
--- /dev/null
+++ b/Modules/Filesystems/NTFS/main.c
@@ -0,0 +1,54 @@
+/*
+ * Acess2 - NTFS Driver
+ * By John Hodge (thePowersGang)
+ * This file is published under the terms of the Acess licence. See the
+ * file COPYING for details.
+ *
+ * main.c - Driver core
+ */
+#define DEBUG	1
+#define VERBOSE	0
+#include "common.h"
+#include <modules.h>
+
+// === PROTOTYPES ===
+ int	NTFS_Install(char **Arguments);
+tVFS_Node	*NTFS_InitDevice(char *Devices, char **Options);
+void	NTFS_Unmount(tVFS_Node *Node);
+
+// === GLOBALS ===
+MODULE_DEFINE(0, 0x0A /*v0.1*/, FS_NTFS, NTFS_Install, NULL);
+tVFS_Driver	gNTFS_FSInfo = {"ntfs", 0, NTFS_InitDevice, NTFS_Unmount, NULL};
+
+tNTFS_Disk	gNTFS_Disks;
+
+// === CODE ===
+/**
+ * \brief Installs the NTFS driver
+ */
+int NTFS_Install(char **Arguments)
+{
+	VFS_AddDriver( &gNTFS_FSInfo );
+	return 1;
+}
+
+/**
+ * \brief Mount a NTFS volume
+ */
+tVFS_Node *NTFS_InitDevice(char *Device, char **Options)
+{
+	char	*path, *host;
+	tNTFS_Disk	*disk;
+	
+	disk = malloc( sizeof(tNTFS_Disk) );
+	
+	return &disk->RootNode;
+}
+
+/**
+ * \brief Unmount an NTFS Disk
+ */
+void NTFS_Unmount(tVFS_Node *Node)
+{
+	
+}
-- 
2.20.1