From: John Hodge Date: Sun, 20 Jun 2010 13:51:38 +0000 (+0800) Subject: Working on a NTFS implementation (it's only going to be RO) X-Git-Tag: rel0.06~134 X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=377247d261f82cc9c26ccd06cc075594b12bd760;p=tpg%2Facess2.git Working on a NTFS implementation (it's only going to be RO) --- 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 + +// === 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) +{ + +}