From 0b9aaf1442259bb14619b92e251f6535b3dc0dd1 Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Tue, 22 Jun 2010 08:37:39 +0800
Subject: [PATCH] Trying to fix the string corruption bug, working on NTFS
 driver

---
 Kernel/arch/x86_64/Makefile       |  6 ----
 Kernel/arch/x86_64/include/arch.h |  2 +-
 Makefile.x86_64.cfg               |  6 ++--
 Modules/Filesystems/NTFS/common.h | 47 ++++++++++++++++++++++++++++++-
 Modules/Filesystems/NTFS/main.c   | 31 +++++++++++++++++++-
 5 files changed, 80 insertions(+), 12 deletions(-)

diff --git a/Kernel/arch/x86_64/Makefile b/Kernel/arch/x86_64/Makefile
index be7c12d6..f539e250 100644
--- a/Kernel/arch/x86_64/Makefile
+++ b/Kernel/arch/x86_64/Makefile
@@ -3,12 +3,6 @@
 # i386 Architecture Makefile
 # arch/i386/Makefile
 
-# Assuming build machine is 32-bit ELF
-#CC = gcc
-#AS = nasm
-#LD = ld
-#OBJDUMP = objdump
-
 MAX_CPUS := 4
 
 CPPFLAGS	:= -DMAX_CPUS=$(MAX_CPUS)
diff --git a/Kernel/arch/x86_64/include/arch.h b/Kernel/arch/x86_64/include/arch.h
index 48d19ca7..41acd883 100644
--- a/Kernel/arch/x86_64/include/arch.h
+++ b/Kernel/arch/x86_64/include/arch.h
@@ -5,7 +5,7 @@
 #ifndef _ARCH_H_
 #define _ARCH_H_
 
-#include <stdint.h>
+//#include <stdint.h>
 //#define KERNEL_BASE	0xFFFF8000##00000000
 #define KERNEL_BASE	0xFFFFFFFF##80000000
 #define BITS	64
diff --git a/Makefile.x86_64.cfg b/Makefile.x86_64.cfg
index e2b7c31b..3116e74d 100644
--- a/Makefile.x86_64.cfg
+++ b/Makefile.x86_64.cfg
@@ -1,7 +1,7 @@
 
-CC = x86_64-linux-gnu-gcc
-LD = ld
-DISASM = objdump -d -M x86-64
+CC = x86_64-none-elf-gcc
+LD = x86_64-none-elf-ld
+DISASM = x86_64-none-elf-objdump -d -M x86-64
 
 KERNEL_CFLAGS := -mcmodel=kernel -nostdlib
 DYNMOD_CFLAGS := -mcmodel=small -fPIC
diff --git a/Modules/Filesystems/NTFS/common.h b/Modules/Filesystems/NTFS/common.h
index ba25c18a..fb3fe357 100644
--- a/Modules/Filesystems/NTFS/common.h
+++ b/Modules/Filesystems/NTFS/common.h
@@ -4,11 +4,53 @@
 #define _COMMON_H_
 
 // === STRUCTURES ===
+/**
+ * In-memory representation of an NTFS Disk
+ */
 typedef struct sNTFS_Disk
 {
-	
+	 int	FD;
+	Uint64	MFTOfs;
+	tVFS_Node	RootNode;
 }	tNTFS_Disk;
 
+typedef struct sNTFS_BootSector
+{
+	// 0
+	Uint8	Jump[3];
+	Uint8	SystemID[8];	// = "NTFS    "
+	Uint16	BytesPerSector;
+	Uint8	SectorsPerCluster;
+	
+	// 14
+	Uint8	Unused[7];
+	Uint8	MediaDescriptor;
+	Uint16	Unused2;
+	Uint16	SectorsPerTrack;
+	
+	Uint64	Unused3;
+	Uint32	Unknown;
+	
+	// 38
+	Uint64	TotalSectorCount;	// Size of volume in sectors
+	Uint64	MFTStart;	// Logical Cluster Number of Cluster 0 of MFT
+	Uint64	MFTMirrorStart;	// Logical Cluster Number of Cluster 0 of MFT Backup
+	
+	// 60
+	// If either of these are -ve, the size can be obtained via
+	// SizeInBytes = 2^(-1 * Value)
+	Uint32	ClustersPerMFTRecord;
+	Uint32	ClustersPerIndexRecord;
+	
+	Uint64	SerialNumber;
+	
+	Uint8	Padding[515-offsetof(tNTFS_BootSector, Padding)];
+	
+}	tNTFS_BootSector;
+
+/**
+ * FILE header, an entry in the MFT
+ */
 typedef struct sNTFS_FILE_Header
 {
 	Uint32	Magic;	// 'FILE'
@@ -48,6 +90,9 @@ typedef struct sNTFS_FILE_Header
 	
 }	tNTFS_FILE_Header;
 
+/**
+ * File Attribute, follows the FILE header
+ */
 typedef struct sNTFS_FILE_Attrib
 {
 	Uint32	Type;	// See eNTFS_FILE_Attribs
diff --git a/Modules/Filesystems/NTFS/main.c b/Modules/Filesystems/NTFS/main.c
index 3fdab017..5ace3333 100644
--- a/Modules/Filesystems/NTFS/main.c
+++ b/Modules/Filesystems/NTFS/main.c
@@ -37,11 +37,40 @@ int NTFS_Install(char **Arguments)
  */
 tVFS_Node *NTFS_InitDevice(char *Device, char **Options)
 {
-	char	*path, *host;
 	tNTFS_Disk	*disk;
+	tNTFS_BootSector	bs;
 	
 	disk = malloc( sizeof(tNTFS_Disk) );
 	
+	disk->FD = VFS_Open(Device, VFS_OPENFLAG_READ);
+	if(!disk->FD) {
+		free(disk);
+		return NULL;
+	}
+	
+	VFS_ReadAt(disk->FD, 0, 512, &bs);
+	
+	disk->ClusterSize = bs.BytesPerSector * bs.SectorsPerCluster;
+	Log_Debug("NTFS", "Cluster Size = %i KiB", disk->ClusterSize/1024);
+	disk->MFTBase = bs.MFTStart;
+	Log_Debug("NTFS", "MFT Base = %i", disk->MFTBase);
+	
+	disk->RootNode.Inode = 5;	// MFT Ent #5 is '.'
+	disk->RootNode.ImplPtr = disk;
+	
+	disk->RootNode.UID = 0;
+	disk->RootNode.GID = 0;
+	
+	disk->RootNode.NumACLs = 1;
+	disk->RootNode.ACLs = &gVFS_ACL_EveryoneRX;
+	
+	disk->RootNode.ReadDir = NTFS_ReadDir;
+	disk->RootNode.FindDir = NTFS_FindDir;
+	disk->RootNode.MkNod = NULL;
+	disk->RootNode.Link = NULL;
+	disk->RootNode.Relink = NULL;
+	disk->RootNode.Close = NULL;
+	
 	return &disk->RootNode;
 }
 
-- 
2.20.1