2010-12-28 15:18:25 +01:00
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/*
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* layout.h - Ntfs on-disk layout structures. Originated from the Linux-NTFS project.
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*
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* Copyright (c) 2000-2005 Anton Altaparmakov
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* Copyright (c) 2005 Yura Pakhuchiy
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* Copyright (c) 2005-2006 Szabolcs Szakacsits
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*
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* This program/include file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program/include file is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program (in the main directory of the NTFS-3G
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* distribution in the file COPYING); if not, write to the Free Software
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* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _NTFS_LAYOUT_H
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#define _NTFS_LAYOUT_H
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#include "types.h"
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#include "endians.h"
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#include "support.h"
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/* The NTFS oem_id */
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#define magicNTFS const_cpu_to_le64(0x202020205346544e) /* "NTFS " */
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#define NTFS_SB_MAGIC 0x5346544e /* 'NTFS' */
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/*
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* Location of bootsector on partition:
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* The standard NTFS_BOOT_SECTOR is on sector 0 of the partition.
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* On NT4 and above there is one backup copy of the boot sector to
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* be found on the last sector of the partition (not normally accessible
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* from within Windows as the bootsector contained number of sectors
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* value is one less than the actual value!).
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* On versions of NT 3.51 and earlier, the backup copy was located at
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* number of sectors/2 (integer divide), i.e. in the middle of the volume.
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*/
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/**
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* struct BIOS_PARAMETER_BLOCK - BIOS parameter block (bpb) structure.
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*/
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typedef struct {
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u16 bytes_per_sector; /* Size of a sector in bytes. */
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u8 sectors_per_cluster; /* Size of a cluster in sectors. */
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u16 reserved_sectors; /* zero */
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u8 fats; /* zero */
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u16 root_entries; /* zero */
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u16 sectors; /* zero */
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u8 media_type; /* 0xf8 = hard disk */
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u16 sectors_per_fat; /* zero */
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/*0x0d*/u16 sectors_per_track; /* Required to boot Windows. */
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/*0x0f*/u16 heads; /* Required to boot Windows. */
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/*0x11*/u32 hidden_sectors; /* Offset to the start of the partition
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relative to the disk in sectors.
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Required to boot Windows. */
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/*0x15*/u32 large_sectors; /* zero */
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/* sizeof() = 25 (0x19) bytes */
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} __attribute__((__packed__)) BIOS_PARAMETER_BLOCK;
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/**
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* struct NTFS_BOOT_SECTOR - NTFS boot sector structure.
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*/
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typedef struct {
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u8 jump[3]; /* Irrelevant (jump to boot up code).*/
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u64 oem_id; /* Magic "NTFS ". */
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/*0x0b*/BIOS_PARAMETER_BLOCK bpb; /* See BIOS_PARAMETER_BLOCK. */
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u8 physical_drive; /* 0x00 floppy, 0x80 hard disk */
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u8 current_head; /* zero */
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u8 extended_boot_signature; /* 0x80 */
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u8 reserved2; /* zero */
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/*0x28*/s64 number_of_sectors; /* Number of sectors in volume. Gives
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maximum volume size of 2^63 sectors.
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Assuming standard sector size of 512
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bytes, the maximum byte size is
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approx. 4.7x10^21 bytes. (-; */
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s64 mft_lcn; /* Cluster location of mft data. */
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s64 mftmirr_lcn; /* Cluster location of copy of mft. */
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s8 clusters_per_mft_record; /* Mft record size in clusters. */
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u8 reserved0[3]; /* zero */
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s8 clusters_per_index_record; /* Index block size in clusters. */
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u8 reserved1[3]; /* zero */
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u64 volume_serial_number; /* Irrelevant (serial number). */
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u32 checksum; /* Boot sector checksum. */
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/*0x54*/u8 bootstrap[426]; /* Irrelevant (boot up code). */
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u16 end_of_sector_marker; /* End of bootsector magic. Always is
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0xaa55 in little endian. */
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/* sizeof() = 512 (0x200) bytes */
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} __attribute__((__packed__)) NTFS_BOOT_SECTOR;
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/**
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* enum NTFS_RECORD_TYPES -
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*
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* Magic identifiers present at the beginning of all ntfs record containing
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* records (like mft records for example).
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*/
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typedef enum {
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/* Found in $MFT/$DATA. */
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magic_FILE = const_cpu_to_le32(0x454c4946), /* Mft entry. */
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magic_INDX = const_cpu_to_le32(0x58444e49), /* Index buffer. */
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magic_HOLE = const_cpu_to_le32(0x454c4f48), /* ? (NTFS 3.0+?) */
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/* Found in $LogFile/$DATA. */
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magic_RSTR = const_cpu_to_le32(0x52545352), /* Restart page. */
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magic_RCRD = const_cpu_to_le32(0x44524352), /* Log record page. */
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/* Found in $LogFile/$DATA. (May be found in $MFT/$DATA, also?) */
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magic_CHKD = const_cpu_to_le32(0x444b4843), /* Modified by chkdsk. */
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/* Found in all ntfs record containing records. */
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magic_BAAD = const_cpu_to_le32(0x44414142), /* Failed multi sector
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transfer was detected. */
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/*
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* Found in $LogFile/$DATA when a page is full or 0xff bytes and is
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* thus not initialized. User has to initialize the page before using
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* it.
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*/
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magic_empty = const_cpu_to_le32(0xffffffff),/* Record is empty and has
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to be initialized before
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it can be used. */
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} NTFS_RECORD_TYPES;
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/*
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* Generic magic comparison macros. Finally found a use for the ## preprocessor
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* operator! (-8
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*/
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#define ntfs_is_magic(x, m) ( (u32)(x) == (u32)magic_##m )
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#define ntfs_is_magicp(p, m) ( *(u32*)(p) == (u32)magic_##m )
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/*
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* Specialised magic comparison macros for the NTFS_RECORD_TYPES defined above.
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*/
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#define ntfs_is_file_record(x) ( ntfs_is_magic (x, FILE) )
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#define ntfs_is_file_recordp(p) ( ntfs_is_magicp(p, FILE) )
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#define ntfs_is_mft_record(x) ( ntfs_is_file_record(x) )
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#define ntfs_is_mft_recordp(p) ( ntfs_is_file_recordp(p) )
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#define ntfs_is_indx_record(x) ( ntfs_is_magic (x, INDX) )
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#define ntfs_is_indx_recordp(p) ( ntfs_is_magicp(p, INDX) )
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#define ntfs_is_hole_record(x) ( ntfs_is_magic (x, HOLE) )
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#define ntfs_is_hole_recordp(p) ( ntfs_is_magicp(p, HOLE) )
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#define ntfs_is_rstr_record(x) ( ntfs_is_magic (x, RSTR) )
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#define ntfs_is_rstr_recordp(p) ( ntfs_is_magicp(p, RSTR) )
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#define ntfs_is_rcrd_record(x) ( ntfs_is_magic (x, RCRD) )
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#define ntfs_is_rcrd_recordp(p) ( ntfs_is_magicp(p, RCRD) )
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#define ntfs_is_chkd_record(x) ( ntfs_is_magic (x, CHKD) )
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#define ntfs_is_chkd_recordp(p) ( ntfs_is_magicp(p, CHKD) )
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#define ntfs_is_baad_record(x) ( ntfs_is_magic (x, BAAD) )
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#define ntfs_is_baad_recordp(p) ( ntfs_is_magicp(p, BAAD) )
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#define ntfs_is_empty_record(x) ( ntfs_is_magic (x, empty) )
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#define ntfs_is_empty_recordp(p) ( ntfs_is_magicp(p, empty) )
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#define NTFS_BLOCK_SIZE 512
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#define NTFS_BLOCK_SIZE_BITS 9
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/**
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* struct NTFS_RECORD -
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*
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* The Update Sequence Array (usa) is an array of the u16 values which belong
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* to the end of each sector protected by the update sequence record in which
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* this array is contained. Note that the first entry is the Update Sequence
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* Number (usn), a cyclic counter of how many times the protected record has
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* been written to disk. The values 0 and -1 (ie. 0xffff) are not used. All
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* last u16's of each sector have to be equal to the usn (during reading) or
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* are set to it (during writing). If they are not, an incomplete multi sector
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* transfer has occurred when the data was written.
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* The maximum size for the update sequence array is fixed to:
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* maximum size = usa_ofs + (usa_count * 2) = 510 bytes
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* The 510 bytes comes from the fact that the last u16 in the array has to
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* (obviously) finish before the last u16 of the first 512-byte sector.
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* This formula can be used as a consistency check in that usa_ofs +
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* (usa_count * 2) has to be less than or equal to 510.
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*/
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typedef struct {
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NTFS_RECORD_TYPES magic;/* A four-byte magic identifying the
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record type and/or status. */
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u16 usa_ofs; /* Offset to the Update Sequence Array (usa)
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from the start of the ntfs record. */
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u16 usa_count; /* Number of u16 sized entries in the usa
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including the Update Sequence Number (usn),
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thus the number of fixups is the usa_count
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minus 1. */
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} __attribute__((__packed__)) NTFS_RECORD;
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/**
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* enum NTFS_SYSTEM_FILES - System files mft record numbers.
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*
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* All these files are always marked as used in the bitmap attribute of the
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* mft; presumably in order to avoid accidental allocation for random other
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* mft records. Also, the sequence number for each of the system files is
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* always equal to their mft record number and it is never modified.
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*/
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typedef enum {
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FILE_MFT = 0, /* Master file table (mft). Data attribute
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contains the entries and bitmap attribute
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records which ones are in use (bit==1). */
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FILE_MFTMirr = 1, /* Mft mirror: copy of first four mft records
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in data attribute. If cluster size > 4kiB,
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copy of first N mft records, with
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N = cluster_size / mft_record_size. */
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FILE_LogFile = 2, /* Journalling log in data attribute. */
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FILE_Volume = 3, /* Volume name attribute and volume information
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attribute (flags and ntfs version). Windows
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refers to this file as volume DASD (Direct
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Access Storage Device). */
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FILE_AttrDef = 4, /* Array of attribute definitions in data
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attribute. */
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FILE_root = 5, /* Root directory. */
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FILE_Bitmap = 6, /* Allocation bitmap of all clusters (lcns) in
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data attribute. */
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FILE_Boot = 7, /* Boot sector (always at cluster 0) in data
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attribute. */
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FILE_BadClus = 8, /* Contains all bad clusters in the non-resident
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data attribute. */
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FILE_Secure = 9, /* Shared security descriptors in data attribute
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and two indexes into the descriptors.
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Appeared in Windows 2000. Before that, this
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file was named $Quota but was unused. */
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FILE_UpCase = 10, /* Uppercase equivalents of all 65536 Unicode
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characters in data attribute. */
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FILE_Extend = 11, /* Directory containing other system files (eg.
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$ObjId, $Quota, $Reparse and $UsnJrnl). This
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is new to NTFS3.0. */
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FILE_reserved12 = 12, /* Reserved for future use (records 12-15). */
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FILE_reserved13 = 13,
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FILE_reserved14 = 14,
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FILE_reserved15 = 15,
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FILE_first_user = 16, /* First user file, used as test limit for
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whether to allow opening a file or not. */
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} NTFS_SYSTEM_FILES;
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/**
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* enum MFT_RECORD_FLAGS -
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*
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* These are the so far known MFT_RECORD_* flags (16-bit) which contain
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* information about the mft record in which they are present.
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*
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* MFT_RECORD_IS_4 exists on all $Extend sub-files.
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* It seems that it marks it is a metadata file with MFT record >24, however,
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* it is unknown if it is limited to metadata files only.
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*
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* MFT_RECORD_IS_VIEW_INDEX exists on every metafile with a non directory
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* index, that means an INDEX_ROOT and an INDEX_ALLOCATION with a name other
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* than "$I30". It is unknown if it is limited to metadata files only.
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*/
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typedef enum {
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MFT_RECORD_IN_USE = const_cpu_to_le16(0x0001),
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MFT_RECORD_IS_DIRECTORY = const_cpu_to_le16(0x0002),
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MFT_RECORD_IS_4 = const_cpu_to_le16(0x0004),
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MFT_RECORD_IS_VIEW_INDEX = const_cpu_to_le16(0x0008),
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MFT_REC_SPACE_FILLER = 0xffff, /* Just to make flags
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16-bit. */
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} __attribute__((__packed__)) MFT_RECORD_FLAGS;
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/*
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* mft references (aka file references or file record segment references) are
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* used whenever a structure needs to refer to a record in the mft.
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*
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* A reference consists of a 48-bit index into the mft and a 16-bit sequence
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* number used to detect stale references.
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*
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* For error reporting purposes we treat the 48-bit index as a signed quantity.
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*
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* The sequence number is a circular counter (skipping 0) describing how many
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* times the referenced mft record has been (re)used. This has to match the
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* sequence number of the mft record being referenced, otherwise the reference
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* is considered stale and removed (FIXME: only ntfsck or the driver itself?).
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*
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* If the sequence number is zero it is assumed that no sequence number
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* consistency checking should be performed.
|
|
|
|
|
*
|
|
|
|
|
* FIXME: Since inodes are 32-bit as of now, the driver needs to always check
|
|
|
|
|
* for high_part being 0 and if not either BUG(), cause a panic() or handle
|
|
|
|
|
* the situation in some other way. This shouldn't be a problem as a volume has
|
|
|
|
|
* to become HUGE in order to need more than 32-bits worth of mft records.
|
|
|
|
|
* Assuming the standard mft record size of 1kb only the records (never mind
|
|
|
|
|
* the non-resident attributes, etc.) would require 4Tb of space on their own
|
|
|
|
|
* for the first 32 bits worth of records. This is only if some strange person
|
|
|
|
|
* doesn't decide to foul play and make the mft sparse which would be a really
|
|
|
|
|
* horrible thing to do as it would trash our current driver implementation. )-:
|
|
|
|
|
* Do I hear screams "we want 64-bit inodes!" ?!? (-;
|
|
|
|
|
*
|
|
|
|
|
* FIXME: The mft zone is defined as the first 12% of the volume. This space is
|
|
|
|
|
* reserved so that the mft can grow contiguously and hence doesn't become
|
|
|
|
|
* fragmented. Volume free space includes the empty part of the mft zone and
|
|
|
|
|
* when the volume's free 88% are used up, the mft zone is shrunk by a factor
|
|
|
|
|
* of 2, thus making more space available for more files/data. This process is
|
|
|
|
|
* repeated every time there is no more free space except for the mft zone until
|
|
|
|
|
* there really is no more free space.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Typedef the MFT_REF as a 64-bit value for easier handling.
|
|
|
|
|
* Also define two unpacking macros to get to the reference (MREF) and
|
|
|
|
|
* sequence number (MSEQNO) respectively.
|
|
|
|
|
* The _LE versions are to be applied on little endian MFT_REFs.
|
|
|
|
|
* Note: The _LE versions will return a CPU endian formatted value!
|
|
|
|
|
*/
|
|
|
|
|
#define MFT_REF_MASK_CPU 0x0000ffffffffffffULL
|
|
|
|
|
#define MFT_REF_MASK_LE const_cpu_to_le64(MFT_REF_MASK_CPU)
|
|
|
|
|
|
|
|
|
|
typedef u64 MFT_REF;
|
2011-05-14 21:20:44 +02:00
|
|
|
typedef le64 leMFT_REF; /* a little-endian MFT_MREF */
|
2010-12-28 15:18:25 +01:00
|
|
|
|
|
|
|
|
#define MK_MREF(m, s) ((MFT_REF)(((MFT_REF)(s) << 48) | \
|
|
|
|
|
((MFT_REF)(m) & MFT_REF_MASK_CPU)))
|
|
|
|
|
#define MK_LE_MREF(m, s) const_cpu_to_le64(((MFT_REF)(((MFT_REF)(s) << 48) | \
|
|
|
|
|
((MFT_REF)(m) & MFT_REF_MASK_CPU))))
|
|
|
|
|
|
|
|
|
|
#define MREF(x) ((u64)((x) & MFT_REF_MASK_CPU))
|
|
|
|
|
#define MSEQNO(x) ((u16)(((x) >> 48) & 0xffff))
|
|
|
|
|
#define MREF_LE(x) ((u64)(const_le64_to_cpu(x) & MFT_REF_MASK_CPU))
|
|
|
|
|
#define MSEQNO_LE(x) ((u16)((const_le64_to_cpu(x) >> 48) & 0xffff))
|
|
|
|
|
|
|
|
|
|
#define IS_ERR_MREF(x) (((x) & 0x0000800000000000ULL) ? 1 : 0)
|
|
|
|
|
#define ERR_MREF(x) ((u64)((s64)(x)))
|
|
|
|
|
#define MREF_ERR(x) ((int)((s64)(x)))
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct MFT_RECORD - An MFT record layout (NTFS 3.1+)
|
|
|
|
|
*
|
|
|
|
|
* The mft record header present at the beginning of every record in the mft.
|
|
|
|
|
* This is followed by a sequence of variable length attribute records which
|
|
|
|
|
* is terminated by an attribute of type AT_END which is a truncated attribute
|
|
|
|
|
* in that it only consists of the attribute type code AT_END and none of the
|
|
|
|
|
* other members of the attribute structure are present.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/*Ofs*/
|
|
|
|
|
/* 0 NTFS_RECORD; -- Unfolded here as gcc doesn't like unnamed structs. */
|
|
|
|
|
NTFS_RECORD_TYPES magic;/* Usually the magic is "FILE". */
|
|
|
|
|
u16 usa_ofs; /* See NTFS_RECORD definition above. */
|
|
|
|
|
u16 usa_count; /* See NTFS_RECORD definition above. */
|
|
|
|
|
|
|
|
|
|
/* 8*/ LSN lsn; /* $LogFile sequence number for this record.
|
|
|
|
|
Changed every time the record is modified. */
|
|
|
|
|
/* 16*/ u16 sequence_number; /* Number of times this mft record has been
|
|
|
|
|
reused. (See description for MFT_REF
|
|
|
|
|
above.) NOTE: The increment (skipping zero)
|
|
|
|
|
is done when the file is deleted. NOTE: If
|
|
|
|
|
this is zero it is left zero. */
|
|
|
|
|
/* 18*/ u16 link_count; /* Number of hard links, i.e. the number of
|
|
|
|
|
directory entries referencing this record.
|
|
|
|
|
NOTE: Only used in mft base records.
|
|
|
|
|
NOTE: When deleting a directory entry we
|
|
|
|
|
check the link_count and if it is 1 we
|
|
|
|
|
delete the file. Otherwise we delete the
|
|
|
|
|
FILE_NAME_ATTR being referenced by the
|
|
|
|
|
directory entry from the mft record and
|
|
|
|
|
decrement the link_count.
|
|
|
|
|
FIXME: Careful with Win32 + DOS names! */
|
|
|
|
|
/* 20*/ u16 attrs_offset; /* Byte offset to the first attribute in this
|
|
|
|
|
mft record from the start of the mft record.
|
|
|
|
|
NOTE: Must be aligned to 8-byte boundary. */
|
|
|
|
|
/* 22*/ MFT_RECORD_FLAGS flags; /* Bit array of MFT_RECORD_FLAGS. When a file
|
|
|
|
|
is deleted, the MFT_RECORD_IN_USE flag is
|
|
|
|
|
set to zero. */
|
|
|
|
|
/* 24*/ u32 bytes_in_use; /* Number of bytes used in this mft record.
|
|
|
|
|
NOTE: Must be aligned to 8-byte boundary. */
|
|
|
|
|
/* 28*/ u32 bytes_allocated; /* Number of bytes allocated for this mft
|
|
|
|
|
record. This should be equal to the mft
|
|
|
|
|
record size. */
|
|
|
|
|
/* 32*/ MFT_REF base_mft_record; /* This is zero for base mft records.
|
|
|
|
|
When it is not zero it is a mft reference
|
|
|
|
|
pointing to the base mft record to which
|
|
|
|
|
this record belongs (this is then used to
|
|
|
|
|
locate the attribute list attribute present
|
|
|
|
|
in the base record which describes this
|
|
|
|
|
extension record and hence might need
|
|
|
|
|
modification when the extension record
|
|
|
|
|
itself is modified, also locating the
|
|
|
|
|
attribute list also means finding the other
|
|
|
|
|
potential extents, belonging to the non-base
|
|
|
|
|
mft record). */
|
|
|
|
|
/* 40*/ u16 next_attr_instance; /* The instance number that will be
|
|
|
|
|
assigned to the next attribute added to this
|
|
|
|
|
mft record. NOTE: Incremented each time
|
|
|
|
|
after it is used. NOTE: Every time the mft
|
|
|
|
|
record is reused this number is set to zero.
|
|
|
|
|
NOTE: The first instance number is always 0.
|
|
|
|
|
*/
|
|
|
|
|
/* The below fields are specific to NTFS 3.1+ (Windows XP and above): */
|
|
|
|
|
/* 42*/ u16 reserved; /* Reserved/alignment. */
|
|
|
|
|
/* 44*/ u32 mft_record_number; /* Number of this mft record. */
|
|
|
|
|
/* sizeof() = 48 bytes */
|
|
|
|
|
/*
|
|
|
|
|
* When (re)using the mft record, we place the update sequence array at this
|
|
|
|
|
* offset, i.e. before we start with the attributes. This also makes sense,
|
|
|
|
|
* otherwise we could run into problems with the update sequence array
|
|
|
|
|
* containing in itself the last two bytes of a sector which would mean that
|
|
|
|
|
* multi sector transfer protection wouldn't work. As you can't protect data
|
|
|
|
|
* by overwriting it since you then can't get it back...
|
|
|
|
|
* When reading we obviously use the data from the ntfs record header.
|
|
|
|
|
*/
|
|
|
|
|
} __attribute__((__packed__)) MFT_RECORD;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct MFT_RECORD_OLD - An MFT record layout (NTFS <=3.0)
|
|
|
|
|
*
|
|
|
|
|
* This is the version without the NTFS 3.1+ specific fields.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/*Ofs*/
|
|
|
|
|
/* 0 NTFS_RECORD; -- Unfolded here as gcc doesn't like unnamed structs. */
|
|
|
|
|
NTFS_RECORD_TYPES magic;/* Usually the magic is "FILE". */
|
|
|
|
|
u16 usa_ofs; /* See NTFS_RECORD definition above. */
|
|
|
|
|
u16 usa_count; /* See NTFS_RECORD definition above. */
|
|
|
|
|
|
|
|
|
|
/* 8*/ LSN lsn; /* $LogFile sequence number for this record.
|
|
|
|
|
Changed every time the record is modified. */
|
|
|
|
|
/* 16*/ u16 sequence_number; /* Number of times this mft record has been
|
|
|
|
|
reused. (See description for MFT_REF
|
|
|
|
|
above.) NOTE: The increment (skipping zero)
|
|
|
|
|
is done when the file is deleted. NOTE: If
|
|
|
|
|
this is zero it is left zero. */
|
|
|
|
|
/* 18*/ u16 link_count; /* Number of hard links, i.e. the number of
|
|
|
|
|
directory entries referencing this record.
|
|
|
|
|
NOTE: Only used in mft base records.
|
|
|
|
|
NOTE: When deleting a directory entry we
|
|
|
|
|
check the link_count and if it is 1 we
|
|
|
|
|
delete the file. Otherwise we delete the
|
|
|
|
|
FILE_NAME_ATTR being referenced by the
|
|
|
|
|
directory entry from the mft record and
|
|
|
|
|
decrement the link_count.
|
|
|
|
|
FIXME: Careful with Win32 + DOS names! */
|
|
|
|
|
/* 20*/ u16 attrs_offset; /* Byte offset to the first attribute in this
|
|
|
|
|
mft record from the start of the mft record.
|
|
|
|
|
NOTE: Must be aligned to 8-byte boundary. */
|
|
|
|
|
/* 22*/ MFT_RECORD_FLAGS flags; /* Bit array of MFT_RECORD_FLAGS. When a file
|
|
|
|
|
is deleted, the MFT_RECORD_IN_USE flag is
|
|
|
|
|
set to zero. */
|
|
|
|
|
/* 24*/ u32 bytes_in_use; /* Number of bytes used in this mft record.
|
|
|
|
|
NOTE: Must be aligned to 8-byte boundary. */
|
|
|
|
|
/* 28*/ u32 bytes_allocated; /* Number of bytes allocated for this mft
|
|
|
|
|
record. This should be equal to the mft
|
|
|
|
|
record size. */
|
|
|
|
|
/* 32*/ MFT_REF base_mft_record; /* This is zero for base mft records.
|
|
|
|
|
When it is not zero it is a mft reference
|
|
|
|
|
pointing to the base mft record to which
|
|
|
|
|
this record belongs (this is then used to
|
|
|
|
|
locate the attribute list attribute present
|
|
|
|
|
in the base record which describes this
|
|
|
|
|
extension record and hence might need
|
|
|
|
|
modification when the extension record
|
|
|
|
|
itself is modified, also locating the
|
|
|
|
|
attribute list also means finding the other
|
|
|
|
|
potential extents, belonging to the non-base
|
|
|
|
|
mft record). */
|
|
|
|
|
/* 40*/ u16 next_attr_instance; /* The instance number that will be
|
|
|
|
|
assigned to the next attribute added to this
|
|
|
|
|
mft record. NOTE: Incremented each time
|
|
|
|
|
after it is used. NOTE: Every time the mft
|
|
|
|
|
record is reused this number is set to zero.
|
|
|
|
|
NOTE: The first instance number is always 0.
|
|
|
|
|
*/
|
|
|
|
|
/* sizeof() = 42 bytes */
|
|
|
|
|
/*
|
|
|
|
|
* When (re)using the mft record, we place the update sequence array at this
|
|
|
|
|
* offset, i.e. before we start with the attributes. This also makes sense,
|
|
|
|
|
* otherwise we could run into problems with the update sequence array
|
|
|
|
|
* containing in itself the last two bytes of a sector which would mean that
|
|
|
|
|
* multi sector transfer protection wouldn't work. As you can't protect data
|
|
|
|
|
* by overwriting it since you then can't get it back...
|
|
|
|
|
* When reading we obviously use the data from the ntfs record header.
|
|
|
|
|
*/
|
|
|
|
|
} __attribute__((__packed__)) MFT_RECORD_OLD;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum ATTR_TYPES - System defined attributes (32-bit).
|
|
|
|
|
*
|
|
|
|
|
* Each attribute type has a corresponding attribute name (Unicode string of
|
|
|
|
|
* maximum 64 character length) as described by the attribute definitions
|
|
|
|
|
* present in the data attribute of the $AttrDef system file.
|
|
|
|
|
*
|
|
|
|
|
* On NTFS 3.0 volumes the names are just as the types are named in the below
|
|
|
|
|
* enum exchanging AT_ for the dollar sign ($). If that isn't a revealing
|
|
|
|
|
* choice of symbol... (-;
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
AT_UNUSED = const_cpu_to_le32( 0),
|
|
|
|
|
AT_STANDARD_INFORMATION = const_cpu_to_le32( 0x10),
|
|
|
|
|
AT_ATTRIBUTE_LIST = const_cpu_to_le32( 0x20),
|
|
|
|
|
AT_FILE_NAME = const_cpu_to_le32( 0x30),
|
|
|
|
|
AT_OBJECT_ID = const_cpu_to_le32( 0x40),
|
|
|
|
|
AT_SECURITY_DESCRIPTOR = const_cpu_to_le32( 0x50),
|
|
|
|
|
AT_VOLUME_NAME = const_cpu_to_le32( 0x60),
|
|
|
|
|
AT_VOLUME_INFORMATION = const_cpu_to_le32( 0x70),
|
|
|
|
|
AT_DATA = const_cpu_to_le32( 0x80),
|
|
|
|
|
AT_INDEX_ROOT = const_cpu_to_le32( 0x90),
|
|
|
|
|
AT_INDEX_ALLOCATION = const_cpu_to_le32( 0xa0),
|
|
|
|
|
AT_BITMAP = const_cpu_to_le32( 0xb0),
|
|
|
|
|
AT_REPARSE_POINT = const_cpu_to_le32( 0xc0),
|
|
|
|
|
AT_EA_INFORMATION = const_cpu_to_le32( 0xd0),
|
|
|
|
|
AT_EA = const_cpu_to_le32( 0xe0),
|
|
|
|
|
AT_PROPERTY_SET = const_cpu_to_le32( 0xf0),
|
|
|
|
|
AT_LOGGED_UTILITY_STREAM = const_cpu_to_le32( 0x100),
|
|
|
|
|
AT_FIRST_USER_DEFINED_ATTRIBUTE = const_cpu_to_le32( 0x1000),
|
|
|
|
|
AT_END = const_cpu_to_le32(0xffffffff),
|
|
|
|
|
} ATTR_TYPES;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum COLLATION_RULES - The collation rules for sorting views/indexes/etc
|
|
|
|
|
* (32-bit).
|
|
|
|
|
*
|
|
|
|
|
* COLLATION_UNICODE_STRING - Collate Unicode strings by comparing their binary
|
|
|
|
|
* Unicode values, except that when a character can be uppercased, the
|
|
|
|
|
* upper case value collates before the lower case one.
|
|
|
|
|
* COLLATION_FILE_NAME - Collate file names as Unicode strings. The collation
|
|
|
|
|
* is done very much like COLLATION_UNICODE_STRING. In fact I have no idea
|
|
|
|
|
* what the difference is. Perhaps the difference is that file names
|
|
|
|
|
* would treat some special characters in an odd way (see
|
|
|
|
|
* unistr.c::ntfs_collate_names() and unistr.c::legal_ansi_char_array[]
|
|
|
|
|
* for what I mean but COLLATION_UNICODE_STRING would not give any special
|
|
|
|
|
* treatment to any characters at all, but this is speculation.
|
|
|
|
|
* COLLATION_NTOFS_ULONG - Sorting is done according to ascending u32 key
|
|
|
|
|
* values. E.g. used for $SII index in FILE_Secure, which sorts by
|
|
|
|
|
* security_id (u32).
|
|
|
|
|
* COLLATION_NTOFS_SID - Sorting is done according to ascending SID values.
|
|
|
|
|
* E.g. used for $O index in FILE_Extend/$Quota.
|
|
|
|
|
* COLLATION_NTOFS_SECURITY_HASH - Sorting is done first by ascending hash
|
|
|
|
|
* values and second by ascending security_id values. E.g. used for $SDH
|
|
|
|
|
* index in FILE_Secure.
|
|
|
|
|
* COLLATION_NTOFS_ULONGS - Sorting is done according to a sequence of ascending
|
|
|
|
|
* u32 key values. E.g. used for $O index in FILE_Extend/$ObjId, which
|
|
|
|
|
* sorts by object_id (16-byte), by splitting up the object_id in four
|
|
|
|
|
* u32 values and using them as individual keys. E.g. take the following
|
|
|
|
|
* two security_ids, stored as follows on disk:
|
|
|
|
|
* 1st: a1 61 65 b7 65 7b d4 11 9e 3d 00 e0 81 10 42 59
|
|
|
|
|
* 2nd: 38 14 37 d2 d2 f3 d4 11 a5 21 c8 6b 79 b1 97 45
|
|
|
|
|
* To compare them, they are split into four u32 values each, like so:
|
|
|
|
|
* 1st: 0xb76561a1 0x11d47b65 0xe0003d9e 0x59421081
|
|
|
|
|
* 2nd: 0xd2371438 0x11d4f3d2 0x6bc821a5 0x4597b179
|
|
|
|
|
* Now, it is apparent why the 2nd object_id collates after the 1st: the
|
|
|
|
|
* first u32 value of the 1st object_id is less than the first u32 of
|
|
|
|
|
* the 2nd object_id. If the first u32 values of both object_ids were
|
|
|
|
|
* equal then the second u32 values would be compared, etc.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
COLLATION_BINARY = const_cpu_to_le32(0), /* Collate by binary
|
|
|
|
|
compare where the first byte is most
|
|
|
|
|
significant. */
|
|
|
|
|
COLLATION_FILE_NAME = const_cpu_to_le32(1), /* Collate file names
|
|
|
|
|
as Unicode strings. */
|
|
|
|
|
COLLATION_UNICODE_STRING = const_cpu_to_le32(2), /* Collate Unicode
|
|
|
|
|
strings by comparing their binary
|
|
|
|
|
Unicode values, except that when a
|
|
|
|
|
character can be uppercased, the upper
|
|
|
|
|
case value collates before the lower
|
|
|
|
|
case one. */
|
|
|
|
|
COLLATION_NTOFS_ULONG = const_cpu_to_le32(16),
|
|
|
|
|
COLLATION_NTOFS_SID = const_cpu_to_le32(17),
|
|
|
|
|
COLLATION_NTOFS_SECURITY_HASH = const_cpu_to_le32(18),
|
|
|
|
|
COLLATION_NTOFS_ULONGS = const_cpu_to_le32(19),
|
|
|
|
|
} COLLATION_RULES;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum ATTR_DEF_FLAGS -
|
|
|
|
|
*
|
|
|
|
|
* The flags (32-bit) describing attribute properties in the attribute
|
|
|
|
|
* definition structure. FIXME: This information is based on Regis's
|
|
|
|
|
* information and, according to him, it is not certain and probably
|
|
|
|
|
* incomplete. The INDEXABLE flag is fairly certainly correct as only the file
|
|
|
|
|
* name attribute has this flag set and this is the only attribute indexed in
|
|
|
|
|
* NT4.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
ATTR_DEF_INDEXABLE = const_cpu_to_le32(0x02), /* Attribute can be
|
|
|
|
|
indexed. */
|
|
|
|
|
ATTR_DEF_MULTIPLE = const_cpu_to_le32(0x04), /* Attribute type
|
|
|
|
|
can be present multiple times in the
|
|
|
|
|
mft records of an inode. */
|
|
|
|
|
ATTR_DEF_NOT_ZERO = const_cpu_to_le32(0x08), /* Attribute value
|
|
|
|
|
must contain at least one non-zero
|
|
|
|
|
byte. */
|
|
|
|
|
ATTR_DEF_INDEXED_UNIQUE = const_cpu_to_le32(0x10), /* Attribute must be
|
|
|
|
|
indexed and the attribute value must be
|
|
|
|
|
unique for the attribute type in all of
|
|
|
|
|
the mft records of an inode. */
|
|
|
|
|
ATTR_DEF_NAMED_UNIQUE = const_cpu_to_le32(0x20), /* Attribute must be
|
|
|
|
|
named and the name must be unique for
|
|
|
|
|
the attribute type in all of the mft
|
|
|
|
|
records of an inode. */
|
|
|
|
|
ATTR_DEF_RESIDENT = const_cpu_to_le32(0x40), /* Attribute must be
|
|
|
|
|
resident. */
|
|
|
|
|
ATTR_DEF_ALWAYS_LOG = const_cpu_to_le32(0x80), /* Always log
|
|
|
|
|
modifications to this attribute,
|
|
|
|
|
regardless of whether it is resident or
|
|
|
|
|
non-resident. Without this, only log
|
|
|
|
|
modifications if the attribute is
|
|
|
|
|
resident. */
|
|
|
|
|
} ATTR_DEF_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct ATTR_DEF -
|
|
|
|
|
*
|
|
|
|
|
* The data attribute of FILE_AttrDef contains a sequence of attribute
|
|
|
|
|
* definitions for the NTFS volume. With this, it is supposed to be safe for an
|
|
|
|
|
* older NTFS driver to mount a volume containing a newer NTFS version without
|
|
|
|
|
* damaging it (that's the theory. In practice it's: not damaging it too much).
|
|
|
|
|
* Entries are sorted by attribute type. The flags describe whether the
|
|
|
|
|
* attribute can be resident/non-resident and possibly other things, but the
|
|
|
|
|
* actual bits are unknown.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/*hex ofs*/
|
|
|
|
|
/* 0*/ ntfschar name[0x40]; /* Unicode name of the attribute. Zero
|
|
|
|
|
terminated. */
|
|
|
|
|
/* 80*/ ATTR_TYPES type; /* Type of the attribute. */
|
|
|
|
|
/* 84*/ u32 display_rule; /* Default display rule.
|
|
|
|
|
FIXME: What does it mean? (AIA) */
|
|
|
|
|
/* 88*/ COLLATION_RULES collation_rule; /* Default collation rule. */
|
|
|
|
|
/* 8c*/ ATTR_DEF_FLAGS flags; /* Flags describing the attribute. */
|
|
|
|
|
/* 90*/ s64 min_size; /* Optional minimum attribute size. */
|
|
|
|
|
/* 98*/ s64 max_size; /* Maximum size of attribute. */
|
|
|
|
|
/* sizeof() = 0xa0 or 160 bytes */
|
|
|
|
|
} __attribute__((__packed__)) ATTR_DEF;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum ATTR_FLAGS - Attribute flags (16-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
ATTR_IS_COMPRESSED = const_cpu_to_le16(0x0001),
|
|
|
|
|
ATTR_COMPRESSION_MASK = const_cpu_to_le16(0x00ff), /* Compression
|
|
|
|
|
method mask. Also, first
|
|
|
|
|
illegal value. */
|
|
|
|
|
ATTR_IS_ENCRYPTED = const_cpu_to_le16(0x4000),
|
|
|
|
|
ATTR_IS_SPARSE = const_cpu_to_le16(0x8000),
|
|
|
|
|
} __attribute__((__packed__)) ATTR_FLAGS;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Attribute compression.
|
|
|
|
|
*
|
|
|
|
|
* Only the data attribute is ever compressed in the current ntfs driver in
|
|
|
|
|
* Windows. Further, compression is only applied when the data attribute is
|
|
|
|
|
* non-resident. Finally, to use compression, the maximum allowed cluster size
|
|
|
|
|
* on a volume is 4kib.
|
|
|
|
|
*
|
|
|
|
|
* The compression method is based on independently compressing blocks of X
|
|
|
|
|
* clusters, where X is determined from the compression_unit value found in the
|
|
|
|
|
* non-resident attribute record header (more precisely: X = 2^compression_unit
|
|
|
|
|
* clusters). On Windows NT/2k, X always is 16 clusters (compression_unit = 4).
|
|
|
|
|
*
|
|
|
|
|
* There are three different cases of how a compression block of X clusters
|
|
|
|
|
* can be stored:
|
|
|
|
|
*
|
|
|
|
|
* 1) The data in the block is all zero (a sparse block):
|
|
|
|
|
* This is stored as a sparse block in the runlist, i.e. the runlist
|
|
|
|
|
* entry has length = X and lcn = -1. The mapping pairs array actually
|
|
|
|
|
* uses a delta_lcn value length of 0, i.e. delta_lcn is not present at
|
|
|
|
|
* all, which is then interpreted by the driver as lcn = -1.
|
|
|
|
|
* NOTE: Even uncompressed files can be sparse on NTFS 3.0 volumes, then
|
|
|
|
|
* the same principles apply as above, except that the length is not
|
|
|
|
|
* restricted to being any particular value.
|
|
|
|
|
*
|
|
|
|
|
* 2) The data in the block is not compressed:
|
|
|
|
|
* This happens when compression doesn't reduce the size of the block
|
|
|
|
|
* in clusters. I.e. if compression has a small effect so that the
|
|
|
|
|
* compressed data still occupies X clusters, then the uncompressed data
|
|
|
|
|
* is stored in the block.
|
|
|
|
|
* This case is recognised by the fact that the runlist entry has
|
|
|
|
|
* length = X and lcn >= 0. The mapping pairs array stores this as
|
|
|
|
|
* normal with a run length of X and some specific delta_lcn, i.e.
|
|
|
|
|
* delta_lcn has to be present.
|
|
|
|
|
*
|
|
|
|
|
* 3) The data in the block is compressed:
|
|
|
|
|
* The common case. This case is recognised by the fact that the run
|
|
|
|
|
* list entry has length L < X and lcn >= 0. The mapping pairs array
|
|
|
|
|
* stores this as normal with a run length of X and some specific
|
|
|
|
|
* delta_lcn, i.e. delta_lcn has to be present. This runlist entry is
|
|
|
|
|
* immediately followed by a sparse entry with length = X - L and
|
|
|
|
|
* lcn = -1. The latter entry is to make up the vcn counting to the
|
|
|
|
|
* full compression block size X.
|
|
|
|
|
*
|
|
|
|
|
* In fact, life is more complicated because adjacent entries of the same type
|
|
|
|
|
* can be coalesced. This means that one has to keep track of the number of
|
|
|
|
|
* clusters handled and work on a basis of X clusters at a time being one
|
|
|
|
|
* block. An example: if length L > X this means that this particular runlist
|
|
|
|
|
* entry contains a block of length X and part of one or more blocks of length
|
|
|
|
|
* L - X. Another example: if length L < X, this does not necessarily mean that
|
|
|
|
|
* the block is compressed as it might be that the lcn changes inside the block
|
|
|
|
|
* and hence the following runlist entry describes the continuation of the
|
|
|
|
|
* potentially compressed block. The block would be compressed if the
|
|
|
|
|
* following runlist entry describes at least X - L sparse clusters, thus
|
|
|
|
|
* making up the compression block length as described in point 3 above. (Of
|
|
|
|
|
* course, there can be several runlist entries with small lengths so that the
|
|
|
|
|
* sparse entry does not follow the first data containing entry with
|
|
|
|
|
* length < X.)
|
|
|
|
|
*
|
|
|
|
|
* NOTE: At the end of the compressed attribute value, there most likely is not
|
|
|
|
|
* just the right amount of data to make up a compression block, thus this data
|
|
|
|
|
* is not even attempted to be compressed. It is just stored as is, unless
|
|
|
|
|
* the number of clusters it occupies is reduced when compressed in which case
|
|
|
|
|
* it is stored as a compressed compression block, complete with sparse
|
|
|
|
|
* clusters at the end.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum RESIDENT_ATTR_FLAGS - Flags of resident attributes (8-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
RESIDENT_ATTR_IS_INDEXED = 0x01, /* Attribute is referenced in an index
|
|
|
|
|
(has implications for deleting and
|
|
|
|
|
modifying the attribute). */
|
|
|
|
|
} __attribute__((__packed__)) RESIDENT_ATTR_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct ATTR_RECORD - Attribute record header.
|
|
|
|
|
*
|
|
|
|
|
* Always aligned to 8-byte boundary.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/*Ofs*/
|
|
|
|
|
/* 0*/ ATTR_TYPES type; /* The (32-bit) type of the attribute. */
|
|
|
|
|
/* 4*/ u32 length; /* Byte size of the resident part of the
|
|
|
|
|
attribute (aligned to 8-byte boundary).
|
|
|
|
|
Used to get to the next attribute. */
|
|
|
|
|
/* 8*/ u8 non_resident; /* If 0, attribute is resident.
|
|
|
|
|
If 1, attribute is non-resident. */
|
|
|
|
|
/* 9*/ u8 name_length; /* Unicode character size of name of attribute.
|
|
|
|
|
0 if unnamed. */
|
|
|
|
|
/* 10*/ u16 name_offset; /* If name_length != 0, the byte offset to the
|
|
|
|
|
beginning of the name from the attribute
|
|
|
|
|
record. Note that the name is stored as a
|
|
|
|
|
Unicode string. When creating, place offset
|
|
|
|
|
just at the end of the record header. Then,
|
|
|
|
|
follow with attribute value or mapping pairs
|
|
|
|
|
array, resident and non-resident attributes
|
|
|
|
|
respectively, aligning to an 8-byte
|
|
|
|
|
boundary. */
|
|
|
|
|
/* 12*/ ATTR_FLAGS flags; /* Flags describing the attribute. */
|
|
|
|
|
/* 14*/ u16 instance; /* The instance of this attribute record. This
|
|
|
|
|
number is unique within this mft record (see
|
|
|
|
|
MFT_RECORD/next_attribute_instance notes
|
|
|
|
|
above for more details). */
|
|
|
|
|
/* 16*/ union {
|
|
|
|
|
/* Resident attributes. */
|
|
|
|
|
struct {
|
|
|
|
|
/* 16 */ u32 value_length; /* Byte size of attribute value. */
|
|
|
|
|
/* 20 */ u16 value_offset; /* Byte offset of the attribute
|
|
|
|
|
value from the start of the
|
|
|
|
|
attribute record. When creating,
|
|
|
|
|
align to 8-byte boundary if we
|
|
|
|
|
have a name present as this might
|
|
|
|
|
not have a length of a multiple
|
|
|
|
|
of 8-bytes. */
|
|
|
|
|
/* 22 */ RESIDENT_ATTR_FLAGS resident_flags; /* See above. */
|
|
|
|
|
/* 23 */ s8 reservedR; /* Reserved/alignment to 8-byte
|
|
|
|
|
boundary. */
|
|
|
|
|
/* 24 */ void *resident_end[0]; /* Use offsetof(ATTR_RECORD,
|
|
|
|
|
resident_end) to get size of
|
|
|
|
|
a resident attribute. */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
/* Non-resident attributes. */
|
|
|
|
|
struct {
|
|
|
|
|
/* 16*/ VCN lowest_vcn; /* Lowest valid virtual cluster number
|
|
|
|
|
for this portion of the attribute value or
|
|
|
|
|
0 if this is the only extent (usually the
|
|
|
|
|
case). - Only when an attribute list is used
|
|
|
|
|
does lowest_vcn != 0 ever occur. */
|
|
|
|
|
/* 24*/ VCN highest_vcn; /* Highest valid vcn of this extent of
|
|
|
|
|
the attribute value. - Usually there is only one
|
|
|
|
|
portion, so this usually equals the attribute
|
|
|
|
|
value size in clusters minus 1. Can be -1 for
|
|
|
|
|
zero length files. Can be 0 for "single extent"
|
|
|
|
|
attributes. */
|
|
|
|
|
/* 32*/ u16 mapping_pairs_offset; /* Byte offset from the
|
|
|
|
|
beginning of the structure to the mapping pairs
|
|
|
|
|
array which contains the mappings between the
|
|
|
|
|
vcns and the logical cluster numbers (lcns).
|
|
|
|
|
When creating, place this at the end of this
|
|
|
|
|
record header aligned to 8-byte boundary. */
|
|
|
|
|
/* 34*/ u8 compression_unit; /* The compression unit expressed
|
|
|
|
|
as the log to the base 2 of the number of
|
|
|
|
|
clusters in a compression unit. 0 means not
|
|
|
|
|
compressed. (This effectively limits the
|
|
|
|
|
compression unit size to be a power of two
|
|
|
|
|
clusters.) WinNT4 only uses a value of 4. */
|
|
|
|
|
/* 35*/ u8 reserved1[5]; /* Align to 8-byte boundary. */
|
|
|
|
|
/* The sizes below are only used when lowest_vcn is zero, as otherwise it would
|
|
|
|
|
be difficult to keep them up-to-date.*/
|
|
|
|
|
/* 40*/ s64 allocated_size; /* Byte size of disk space
|
|
|
|
|
allocated to hold the attribute value. Always
|
|
|
|
|
is a multiple of the cluster size. When a file
|
|
|
|
|
is compressed, this field is a multiple of the
|
|
|
|
|
compression block size (2^compression_unit) and
|
|
|
|
|
it represents the logically allocated space
|
|
|
|
|
rather than the actual on disk usage. For this
|
|
|
|
|
use the compressed_size (see below). */
|
|
|
|
|
/* 48*/ s64 data_size; /* Byte size of the attribute
|
|
|
|
|
value. Can be larger than allocated_size if
|
|
|
|
|
attribute value is compressed or sparse. */
|
|
|
|
|
/* 56*/ s64 initialized_size; /* Byte size of initialized
|
|
|
|
|
portion of the attribute value. Usually equals
|
|
|
|
|
data_size. */
|
|
|
|
|
/* 64 */ void *non_resident_end[0]; /* Use offsetof(ATTR_RECORD,
|
|
|
|
|
non_resident_end) to get
|
|
|
|
|
size of a non resident
|
|
|
|
|
attribute. */
|
|
|
|
|
/* sizeof(uncompressed attr) = 64*/
|
|
|
|
|
/* 64*/ s64 compressed_size; /* Byte size of the attribute
|
|
|
|
|
value after compression. Only present when
|
|
|
|
|
compressed. Always is a multiple of the
|
|
|
|
|
cluster size. Represents the actual amount of
|
|
|
|
|
disk space being used on the disk. */
|
|
|
|
|
/* 72 */ void *compressed_end[0];
|
|
|
|
|
/* Use offsetof(ATTR_RECORD, compressed_end) to
|
|
|
|
|
get size of a compressed attribute. */
|
|
|
|
|
/* sizeof(compressed attr) = 72*/
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__)) ATTR_RECORD;
|
|
|
|
|
|
|
|
|
|
typedef ATTR_RECORD ATTR_REC;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum FILE_ATTR_FLAGS - File attribute flags (32-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
/*
|
|
|
|
|
* These flags are only present in the STANDARD_INFORMATION attribute
|
|
|
|
|
* (in the field file_attributes).
|
|
|
|
|
*/
|
|
|
|
|
FILE_ATTR_READONLY = const_cpu_to_le32(0x00000001),
|
|
|
|
|
FILE_ATTR_HIDDEN = const_cpu_to_le32(0x00000002),
|
|
|
|
|
FILE_ATTR_SYSTEM = const_cpu_to_le32(0x00000004),
|
|
|
|
|
/* Old DOS volid. Unused in NT. = cpu_to_le32(0x00000008), */
|
|
|
|
|
|
|
|
|
|
FILE_ATTR_DIRECTORY = const_cpu_to_le32(0x00000010),
|
|
|
|
|
/* FILE_ATTR_DIRECTORY is not considered valid in NT. It is reserved
|
|
|
|
|
for the DOS SUBDIRECTORY flag. */
|
|
|
|
|
FILE_ATTR_ARCHIVE = const_cpu_to_le32(0x00000020),
|
|
|
|
|
FILE_ATTR_DEVICE = const_cpu_to_le32(0x00000040),
|
|
|
|
|
FILE_ATTR_NORMAL = const_cpu_to_le32(0x00000080),
|
|
|
|
|
|
|
|
|
|
FILE_ATTR_TEMPORARY = const_cpu_to_le32(0x00000100),
|
|
|
|
|
FILE_ATTR_SPARSE_FILE = const_cpu_to_le32(0x00000200),
|
|
|
|
|
FILE_ATTR_REPARSE_POINT = const_cpu_to_le32(0x00000400),
|
|
|
|
|
FILE_ATTR_COMPRESSED = const_cpu_to_le32(0x00000800),
|
|
|
|
|
|
|
|
|
|
FILE_ATTR_OFFLINE = const_cpu_to_le32(0x00001000),
|
|
|
|
|
FILE_ATTR_NOT_CONTENT_INDEXED = const_cpu_to_le32(0x00002000),
|
|
|
|
|
FILE_ATTR_ENCRYPTED = const_cpu_to_le32(0x00004000),
|
|
|
|
|
|
|
|
|
|
FILE_ATTR_VALID_FLAGS = const_cpu_to_le32(0x00007fb7),
|
|
|
|
|
/* FILE_ATTR_VALID_FLAGS masks out the old DOS VolId and the
|
|
|
|
|
FILE_ATTR_DEVICE and preserves everything else. This mask
|
|
|
|
|
is used to obtain all flags that are valid for reading. */
|
|
|
|
|
FILE_ATTR_VALID_SET_FLAGS = const_cpu_to_le32(0x000031a7),
|
|
|
|
|
/* FILE_ATTR_VALID_SET_FLAGS masks out the old DOS VolId, the
|
|
|
|
|
FILE_ATTR_DEVICE, FILE_ATTR_DIRECTORY, FILE_ATTR_SPARSE_FILE,
|
|
|
|
|
FILE_ATTR_REPARSE_POINT, FILE_ATRE_COMPRESSED and FILE_ATTR_ENCRYPTED
|
|
|
|
|
and preserves the rest. This mask is used to to obtain all flags that
|
|
|
|
|
are valid for setting. */
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* FILE_ATTR_I30_INDEX_PRESENT - Is it a directory?
|
|
|
|
|
*
|
|
|
|
|
* This is a copy of the MFT_RECORD_IS_DIRECTORY bit from the mft
|
|
|
|
|
* record, telling us whether this is a directory or not, i.e. whether
|
|
|
|
|
* it has an index root attribute named "$I30" or not.
|
|
|
|
|
*
|
|
|
|
|
* This flag is only present in the FILE_NAME attribute (in the
|
|
|
|
|
* file_attributes field).
|
|
|
|
|
*/
|
|
|
|
|
FILE_ATTR_I30_INDEX_PRESENT = const_cpu_to_le32(0x10000000),
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* FILE_ATTR_VIEW_INDEX_PRESENT - Does have a non-directory index?
|
|
|
|
|
*
|
|
|
|
|
* This is a copy of the MFT_RECORD_IS_VIEW_INDEX bit from the mft
|
|
|
|
|
* record, telling us whether this file has a view index present (eg.
|
|
|
|
|
* object id index, quota index, one of the security indexes and the
|
|
|
|
|
* reparse points index).
|
|
|
|
|
*
|
|
|
|
|
* This flag is only present in the $STANDARD_INFORMATION and
|
|
|
|
|
* $FILE_NAME attributes.
|
|
|
|
|
*/
|
|
|
|
|
FILE_ATTR_VIEW_INDEX_PRESENT = const_cpu_to_le32(0x20000000),
|
|
|
|
|
} __attribute__((__packed__)) FILE_ATTR_FLAGS;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* NOTE on times in NTFS: All times are in MS standard time format, i.e. they
|
|
|
|
|
* are the number of 100-nanosecond intervals since 1st January 1601, 00:00:00
|
|
|
|
|
* universal coordinated time (UTC). (In Linux time starts 1st January 1970,
|
|
|
|
|
* 00:00:00 UTC and is stored as the number of 1-second intervals since then.)
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct STANDARD_INFORMATION - Attribute: Standard information (0x10).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Always resident.
|
|
|
|
|
* NOTE: Present in all base file records on a volume.
|
|
|
|
|
* NOTE: There is conflicting information about the meaning of each of the time
|
|
|
|
|
* fields but the meaning as defined below has been verified to be
|
|
|
|
|
* correct by practical experimentation on Windows NT4 SP6a and is hence
|
|
|
|
|
* assumed to be the one and only correct interpretation.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/*Ofs*/
|
|
|
|
|
/* 0*/ s64 creation_time; /* Time file was created. Updated when
|
|
|
|
|
a filename is changed(?). */
|
|
|
|
|
/* 8*/ s64 last_data_change_time; /* Time the data attribute was last
|
|
|
|
|
modified. */
|
|
|
|
|
/* 16*/ s64 last_mft_change_time; /* Time this mft record was last
|
|
|
|
|
modified. */
|
|
|
|
|
/* 24*/ s64 last_access_time; /* Approximate time when the file was
|
|
|
|
|
last accessed (obviously this is not
|
|
|
|
|
updated on read-only volumes). In
|
|
|
|
|
Windows this is only updated when
|
|
|
|
|
accessed if some time delta has
|
|
|
|
|
passed since the last update. Also,
|
|
|
|
|
last access times updates can be
|
|
|
|
|
disabled altogether for speed. */
|
|
|
|
|
/* 32*/ FILE_ATTR_FLAGS file_attributes; /* Flags describing the file. */
|
|
|
|
|
/* 36*/ union {
|
|
|
|
|
/* NTFS 1.2 (and previous, presumably) */
|
|
|
|
|
struct {
|
|
|
|
|
/* 36 */ u8 reserved12[12]; /* Reserved/alignment to 8-byte
|
|
|
|
|
boundary. */
|
|
|
|
|
/* 48 */ void *v1_end[0]; /* Marker for offsetof(). */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
/* sizeof() = 48 bytes */
|
|
|
|
|
/* NTFS 3.0 */
|
|
|
|
|
struct {
|
|
|
|
|
/*
|
|
|
|
|
* If a volume has been upgraded from a previous NTFS version, then these
|
|
|
|
|
* fields are present only if the file has been accessed since the upgrade.
|
|
|
|
|
* Recognize the difference by comparing the length of the resident attribute
|
|
|
|
|
* value. If it is 48, then the following fields are missing. If it is 72 then
|
|
|
|
|
* the fields are present. Maybe just check like this:
|
|
|
|
|
* if (resident.ValueLength < sizeof(STANDARD_INFORMATION)) {
|
|
|
|
|
* Assume NTFS 1.2- format.
|
|
|
|
|
* If (volume version is 3.0+)
|
|
|
|
|
* Upgrade attribute to NTFS 3.0 format.
|
|
|
|
|
* else
|
|
|
|
|
* Use NTFS 1.2- format for access.
|
|
|
|
|
* } else
|
|
|
|
|
* Use NTFS 3.0 format for access.
|
|
|
|
|
* Only problem is that it might be legal to set the length of the value to
|
|
|
|
|
* arbitrarily large values thus spoiling this check. - But chkdsk probably
|
|
|
|
|
* views that as a corruption, assuming that it behaves like this for all
|
|
|
|
|
* attributes.
|
|
|
|
|
*/
|
|
|
|
|
/* 36*/ u32 maximum_versions; /* Maximum allowed versions for
|
|
|
|
|
file. Zero if version numbering is disabled. */
|
|
|
|
|
/* 40*/ u32 version_number; /* This file's version (if any).
|
|
|
|
|
Set to zero if maximum_versions is zero. */
|
|
|
|
|
/* 44*/ u32 class_id; /* Class id from bidirectional
|
|
|
|
|
class id index (?). */
|
|
|
|
|
/* 48*/ u32 owner_id; /* Owner_id of the user owning
|
|
|
|
|
the file. Translate via $Q index in FILE_Extend
|
|
|
|
|
/$Quota to the quota control entry for the user
|
|
|
|
|
owning the file. Zero if quotas are disabled. */
|
|
|
|
|
/* 52*/ u32 security_id; /* Security_id for the file.
|
|
|
|
|
Translate via $SII index and $SDS data stream
|
|
|
|
|
in FILE_Secure to the security descriptor. */
|
|
|
|
|
/* 56*/ u64 quota_charged; /* Byte size of the charge to
|
|
|
|
|
the quota for all streams of the file. Note: Is
|
|
|
|
|
zero if quotas are disabled. */
|
|
|
|
|
/* 64*/ u64 usn; /* Last update sequence number
|
|
|
|
|
of the file. This is a direct index into the
|
|
|
|
|
change (aka usn) journal file. It is zero if
|
|
|
|
|
the usn journal is disabled.
|
|
|
|
|
NOTE: To disable the journal need to delete
|
|
|
|
|
the journal file itself and to then walk the
|
|
|
|
|
whole mft and set all Usn entries in all mft
|
|
|
|
|
records to zero! (This can take a while!)
|
|
|
|
|
The journal is FILE_Extend/$UsnJrnl. Win2k
|
|
|
|
|
will recreate the journal and initiate
|
|
|
|
|
logging if necessary when mounting the
|
|
|
|
|
partition. This, in contrast to disabling the
|
|
|
|
|
journal is a very fast process, so the user
|
|
|
|
|
won't even notice it. */
|
|
|
|
|
/* 72*/ void *v3_end[0]; /* Marker for offsetof(). */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
/* sizeof() = 72 bytes (NTFS 3.0) */
|
|
|
|
|
} __attribute__((__packed__)) STANDARD_INFORMATION;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct ATTR_LIST_ENTRY - Attribute: Attribute list (0x20).
|
|
|
|
|
*
|
|
|
|
|
* - Can be either resident or non-resident.
|
|
|
|
|
* - Value consists of a sequence of variable length, 8-byte aligned,
|
|
|
|
|
* ATTR_LIST_ENTRY records.
|
|
|
|
|
* - The attribute list attribute contains one entry for each attribute of
|
|
|
|
|
* the file in which the list is located, except for the list attribute
|
|
|
|
|
* itself. The list is sorted: first by attribute type, second by attribute
|
|
|
|
|
* name (if present), third by instance number. The extents of one
|
|
|
|
|
* non-resident attribute (if present) immediately follow after the initial
|
|
|
|
|
* extent. They are ordered by lowest_vcn and have their instance set to zero.
|
|
|
|
|
* It is not allowed to have two attributes with all sorting keys equal.
|
|
|
|
|
* - Further restrictions:
|
|
|
|
|
* - If not resident, the vcn to lcn mapping array has to fit inside the
|
|
|
|
|
* base mft record.
|
|
|
|
|
* - The attribute list attribute value has a maximum size of 256kb. This
|
|
|
|
|
* is imposed by the Windows cache manager.
|
|
|
|
|
* - Attribute lists are only used when the attributes of mft record do not
|
|
|
|
|
* fit inside the mft record despite all attributes (that can be made
|
|
|
|
|
* non-resident) having been made non-resident. This can happen e.g. when:
|
|
|
|
|
* - File has a large number of hard links (lots of file name
|
|
|
|
|
* attributes present).
|
|
|
|
|
* - The mapping pairs array of some non-resident attribute becomes so
|
|
|
|
|
* large due to fragmentation that it overflows the mft record.
|
|
|
|
|
* - The security descriptor is very complex (not applicable to
|
|
|
|
|
* NTFS 3.0 volumes).
|
|
|
|
|
* - There are many named streams.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/*Ofs*/
|
|
|
|
|
/* 0*/ ATTR_TYPES type; /* Type of referenced attribute. */
|
|
|
|
|
/* 4*/ u16 length; /* Byte size of this entry. */
|
|
|
|
|
/* 6*/ u8 name_length; /* Size in Unicode chars of the name of the
|
|
|
|
|
attribute or 0 if unnamed. */
|
|
|
|
|
/* 7*/ u8 name_offset; /* Byte offset to beginning of attribute name
|
|
|
|
|
(always set this to where the name would
|
|
|
|
|
start even if unnamed). */
|
|
|
|
|
/* 8*/ VCN lowest_vcn; /* Lowest virtual cluster number of this portion
|
|
|
|
|
of the attribute value. This is usually 0. It
|
|
|
|
|
is non-zero for the case where one attribute
|
|
|
|
|
does not fit into one mft record and thus
|
|
|
|
|
several mft records are allocated to hold
|
|
|
|
|
this attribute. In the latter case, each mft
|
|
|
|
|
record holds one extent of the attribute and
|
|
|
|
|
there is one attribute list entry for each
|
|
|
|
|
extent. NOTE: This is DEFINITELY a signed
|
|
|
|
|
value! The windows driver uses cmp, followed
|
|
|
|
|
by jg when comparing this, thus it treats it
|
|
|
|
|
as signed. */
|
|
|
|
|
/* 16*/ MFT_REF mft_reference; /* The reference of the mft record holding
|
|
|
|
|
the ATTR_RECORD for this portion of the
|
|
|
|
|
attribute value. */
|
|
|
|
|
/* 24*/ u16 instance; /* If lowest_vcn = 0, the instance of the
|
|
|
|
|
attribute being referenced; otherwise 0. */
|
|
|
|
|
/* 26*/ ntfschar name[0]; /* Use when creating only. When reading use
|
|
|
|
|
name_offset to determine the location of the
|
|
|
|
|
name. */
|
|
|
|
|
/* sizeof() = 26 + (attribute_name_length * 2) bytes */
|
|
|
|
|
} __attribute__((__packed__)) ATTR_LIST_ENTRY;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The maximum allowed length for a file name.
|
|
|
|
|
*/
|
|
|
|
|
#define NTFS_MAX_NAME_LEN 255
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum FILE_NAME_TYPE_FLAGS - Possible namespaces for filenames in ntfs.
|
|
|
|
|
* (8-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
FILE_NAME_POSIX = 0x00,
|
|
|
|
|
/* This is the largest namespace. It is case sensitive and
|
|
|
|
|
allows all Unicode characters except for: '\0' and '/'.
|
|
|
|
|
Beware that in WinNT/2k files which eg have the same name
|
|
|
|
|
except for their case will not be distinguished by the
|
|
|
|
|
standard utilities and thus a "del filename" will delete
|
|
|
|
|
both "filename" and "fileName" without warning. */
|
|
|
|
|
FILE_NAME_WIN32 = 0x01,
|
|
|
|
|
/* The standard WinNT/2k NTFS long filenames. Case insensitive.
|
|
|
|
|
All Unicode chars except: '\0', '"', '*', '/', ':', '<',
|
|
|
|
|
'>', '?', '\' and '|'. Further, names cannot end with a '.'
|
|
|
|
|
or a space. */
|
|
|
|
|
FILE_NAME_DOS = 0x02,
|
|
|
|
|
/* The standard DOS filenames (8.3 format). Uppercase only.
|
|
|
|
|
All 8-bit characters greater space, except: '"', '*', '+',
|
|
|
|
|
',', '/', ':', ';', '<', '=', '>', '?' and '\'. */
|
|
|
|
|
FILE_NAME_WIN32_AND_DOS = 0x03,
|
|
|
|
|
/* 3 means that both the Win32 and the DOS filenames are
|
|
|
|
|
identical and hence have been saved in this single filename
|
|
|
|
|
record. */
|
|
|
|
|
} __attribute__((__packed__)) FILE_NAME_TYPE_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct FILE_NAME_ATTR - Attribute: Filename (0x30).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Always resident.
|
|
|
|
|
* NOTE: All fields, except the parent_directory, are only updated when the
|
|
|
|
|
* filename is changed. Until then, they just become out of sync with
|
|
|
|
|
* reality and the more up to date values are present in the standard
|
|
|
|
|
* information attribute.
|
|
|
|
|
* NOTE: There is conflicting information about the meaning of each of the time
|
|
|
|
|
* fields but the meaning as defined below has been verified to be
|
|
|
|
|
* correct by practical experimentation on Windows NT4 SP6a and is hence
|
|
|
|
|
* assumed to be the one and only correct interpretation.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/*hex ofs*/
|
|
|
|
|
/* 0*/ MFT_REF parent_directory; /* Directory this filename is
|
|
|
|
|
referenced from. */
|
|
|
|
|
/* 8*/ s64 creation_time; /* Time file was created. */
|
|
|
|
|
/* 10*/ s64 last_data_change_time; /* Time the data attribute was last
|
|
|
|
|
modified. */
|
|
|
|
|
/* 18*/ s64 last_mft_change_time; /* Time this mft record was last
|
|
|
|
|
modified. */
|
|
|
|
|
/* 20*/ s64 last_access_time; /* Last time this mft record was
|
|
|
|
|
accessed. */
|
|
|
|
|
/* 28*/ s64 allocated_size; /* Byte size of on-disk allocated space
|
|
|
|
|
for the data attribute. So for
|
|
|
|
|
normal $DATA, this is the
|
|
|
|
|
allocated_size from the unnamed
|
|
|
|
|
$DATA attribute and for compressed
|
|
|
|
|
and/or sparse $DATA, this is the
|
|
|
|
|
compressed_size from the unnamed
|
|
|
|
|
$DATA attribute. NOTE: This is a
|
|
|
|
|
multiple of the cluster size. */
|
|
|
|
|
/* 30*/ s64 data_size; /* Byte size of actual data in data
|
|
|
|
|
attribute. */
|
|
|
|
|
/* 38*/ FILE_ATTR_FLAGS file_attributes; /* Flags describing the file. */
|
|
|
|
|
/* 3c*/ union {
|
|
|
|
|
/* 3c*/ struct {
|
|
|
|
|
/* 3c*/ u16 packed_ea_size; /* Size of the buffer needed to
|
|
|
|
|
pack the extended attributes
|
|
|
|
|
(EAs), if such are present.*/
|
|
|
|
|
/* 3e*/ u16 reserved; /* Reserved for alignment. */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
/* 3c*/ u32 reparse_point_tag; /* Type of reparse point,
|
|
|
|
|
present only in reparse
|
|
|
|
|
points and only if there are
|
|
|
|
|
no EAs. */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
/* 40*/ u8 file_name_length; /* Length of file name in
|
|
|
|
|
(Unicode) characters. */
|
|
|
|
|
/* 41*/ FILE_NAME_TYPE_FLAGS file_name_type; /* Namespace of the file name.*/
|
|
|
|
|
/* 42*/ ntfschar file_name[0]; /* File name in Unicode. */
|
|
|
|
|
} __attribute__((__packed__)) FILE_NAME_ATTR;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct GUID - GUID structures store globally unique identifiers (GUID).
|
|
|
|
|
*
|
|
|
|
|
* A GUID is a 128-bit value consisting of one group of eight hexadecimal
|
|
|
|
|
* digits, followed by three groups of four hexadecimal digits each, followed
|
|
|
|
|
* by one group of twelve hexadecimal digits. GUIDs are Microsoft's
|
|
|
|
|
* implementation of the distributed computing environment (DCE) universally
|
|
|
|
|
* unique identifier (UUID).
|
|
|
|
|
*
|
|
|
|
|
* Example of a GUID:
|
|
|
|
|
* 1F010768-5A73-BC91-0010-A52216A7227B
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 data1; /* The first eight hexadecimal digits of the GUID. */
|
|
|
|
|
u16 data2; /* The first group of four hexadecimal digits. */
|
|
|
|
|
u16 data3; /* The second group of four hexadecimal digits. */
|
|
|
|
|
u8 data4[8]; /* The first two bytes are the third group of four
|
|
|
|
|
hexadecimal digits. The remaining six bytes are the
|
|
|
|
|
final 12 hexadecimal digits. */
|
|
|
|
|
} __attribute__((__packed__)) GUID;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct OBJ_ID_INDEX_DATA - FILE_Extend/$ObjId contains an index named $O.
|
|
|
|
|
*
|
|
|
|
|
* This index contains all object_ids present on the volume as the index keys
|
|
|
|
|
* and the corresponding mft_record numbers as the index entry data parts.
|
|
|
|
|
*
|
|
|
|
|
* The data part (defined below) also contains three other object_ids:
|
|
|
|
|
* birth_volume_id - object_id of FILE_Volume on which the file was first
|
|
|
|
|
* created. Optional (i.e. can be zero).
|
|
|
|
|
* birth_object_id - object_id of file when it was first created. Usually
|
|
|
|
|
* equals the object_id. Optional (i.e. can be zero).
|
|
|
|
|
* domain_id - Reserved (always zero).
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
MFT_REF mft_reference; /* Mft record containing the object_id in
|
|
|
|
|
the index entry key. */
|
|
|
|
|
union {
|
|
|
|
|
struct {
|
|
|
|
|
GUID birth_volume_id;
|
|
|
|
|
GUID birth_object_id;
|
|
|
|
|
GUID domain_id;
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
u8 extended_info[48];
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__)) OBJ_ID_INDEX_DATA;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct OBJECT_ID_ATTR - Attribute: Object id (NTFS 3.0+) (0x40).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Always resident.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
GUID object_id; /* Unique id assigned to the
|
|
|
|
|
file.*/
|
|
|
|
|
/* The following fields are optional. The attribute value size is 16
|
|
|
|
|
bytes, i.e. sizeof(GUID), if these are not present at all. Note,
|
|
|
|
|
the entries can be present but one or more (or all) can be zero
|
|
|
|
|
meaning that that particular value(s) is(are) not defined. Note,
|
|
|
|
|
when the fields are missing here, it is well possible that they are
|
|
|
|
|
to be found within the $Extend/$ObjId system file indexed under the
|
|
|
|
|
above object_id. */
|
|
|
|
|
union {
|
|
|
|
|
struct {
|
|
|
|
|
GUID birth_volume_id; /* Unique id of volume on which
|
|
|
|
|
the file was first created.*/
|
|
|
|
|
GUID birth_object_id; /* Unique id of file when it was
|
|
|
|
|
first created. */
|
|
|
|
|
GUID domain_id; /* Reserved, zero. */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
u8 extended_info[48];
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__)) OBJECT_ID_ATTR;
|
|
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
|
/**
|
|
|
|
|
* enum IDENTIFIER_AUTHORITIES -
|
|
|
|
|
*
|
|
|
|
|
* The pre-defined IDENTIFIER_AUTHORITIES used as SID_IDENTIFIER_AUTHORITY in
|
|
|
|
|
* the SID structure (see below).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum { /* SID string prefix. */
|
|
|
|
|
SECURITY_NULL_SID_AUTHORITY = {0, 0, 0, 0, 0, 0}, /* S-1-0 */
|
|
|
|
|
SECURITY_WORLD_SID_AUTHORITY = {0, 0, 0, 0, 0, 1}, /* S-1-1 */
|
|
|
|
|
SECURITY_LOCAL_SID_AUTHORITY = {0, 0, 0, 0, 0, 2}, /* S-1-2 */
|
|
|
|
|
SECURITY_CREATOR_SID_AUTHORITY = {0, 0, 0, 0, 0, 3}, /* S-1-3 */
|
|
|
|
|
SECURITY_NON_UNIQUE_AUTHORITY = {0, 0, 0, 0, 0, 4}, /* S-1-4 */
|
|
|
|
|
SECURITY_NT_SID_AUTHORITY = {0, 0, 0, 0, 0, 5}, /* S-1-5 */
|
|
|
|
|
} IDENTIFIER_AUTHORITIES;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum RELATIVE_IDENTIFIERS -
|
|
|
|
|
*
|
|
|
|
|
* These relative identifiers (RIDs) are used with the above identifier
|
|
|
|
|
* authorities to make up universal well-known SIDs.
|
|
|
|
|
*
|
|
|
|
|
* Note: The relative identifier (RID) refers to the portion of a SID, which
|
|
|
|
|
* identifies a user or group in relation to the authority that issued the SID.
|
|
|
|
|
* For example, the universal well-known SID Creator Owner ID (S-1-3-0) is
|
|
|
|
|
* made up of the identifier authority SECURITY_CREATOR_SID_AUTHORITY (3) and
|
|
|
|
|
* the relative identifier SECURITY_CREATOR_OWNER_RID (0).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum { /* Identifier authority. */
|
|
|
|
|
SECURITY_NULL_RID = 0, /* S-1-0 */
|
|
|
|
|
SECURITY_WORLD_RID = 0, /* S-1-1 */
|
|
|
|
|
SECURITY_LOCAL_RID = 0, /* S-1-2 */
|
|
|
|
|
|
|
|
|
|
SECURITY_CREATOR_OWNER_RID = 0, /* S-1-3 */
|
|
|
|
|
SECURITY_CREATOR_GROUP_RID = 1, /* S-1-3 */
|
|
|
|
|
|
|
|
|
|
SECURITY_CREATOR_OWNER_SERVER_RID = 2, /* S-1-3 */
|
|
|
|
|
SECURITY_CREATOR_GROUP_SERVER_RID = 3, /* S-1-3 */
|
|
|
|
|
|
|
|
|
|
SECURITY_DIALUP_RID = 1,
|
|
|
|
|
SECURITY_NETWORK_RID = 2,
|
|
|
|
|
SECURITY_BATCH_RID = 3,
|
|
|
|
|
SECURITY_INTERACTIVE_RID = 4,
|
|
|
|
|
SECURITY_SERVICE_RID = 6,
|
|
|
|
|
SECURITY_ANONYMOUS_LOGON_RID = 7,
|
|
|
|
|
SECURITY_PROXY_RID = 8,
|
|
|
|
|
SECURITY_ENTERPRISE_CONTROLLERS_RID=9,
|
|
|
|
|
SECURITY_SERVER_LOGON_RID = 9,
|
|
|
|
|
SECURITY_PRINCIPAL_SELF_RID = 0xa,
|
|
|
|
|
SECURITY_AUTHENTICATED_USER_RID = 0xb,
|
|
|
|
|
SECURITY_RESTRICTED_CODE_RID = 0xc,
|
|
|
|
|
SECURITY_TERMINAL_SERVER_RID = 0xd,
|
|
|
|
|
|
|
|
|
|
SECURITY_LOGON_IDS_RID = 5,
|
|
|
|
|
SECURITY_LOGON_IDS_RID_COUNT = 3,
|
|
|
|
|
|
|
|
|
|
SECURITY_LOCAL_SYSTEM_RID = 0x12,
|
|
|
|
|
|
|
|
|
|
SECURITY_NT_NON_UNIQUE = 0x15,
|
|
|
|
|
|
|
|
|
|
SECURITY_BUILTIN_DOMAIN_RID = 0x20,
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Well-known domain relative sub-authority values (RIDs).
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* Users. */
|
|
|
|
|
DOMAIN_USER_RID_ADMIN = 0x1f4,
|
|
|
|
|
DOMAIN_USER_RID_GUEST = 0x1f5,
|
|
|
|
|
DOMAIN_USER_RID_KRBTGT = 0x1f6,
|
|
|
|
|
|
|
|
|
|
/* Groups. */
|
|
|
|
|
DOMAIN_GROUP_RID_ADMINS = 0x200,
|
|
|
|
|
DOMAIN_GROUP_RID_USERS = 0x201,
|
|
|
|
|
DOMAIN_GROUP_RID_GUESTS = 0x202,
|
|
|
|
|
DOMAIN_GROUP_RID_COMPUTERS = 0x203,
|
|
|
|
|
DOMAIN_GROUP_RID_CONTROLLERS = 0x204,
|
|
|
|
|
DOMAIN_GROUP_RID_CERT_ADMINS = 0x205,
|
|
|
|
|
DOMAIN_GROUP_RID_SCHEMA_ADMINS = 0x206,
|
|
|
|
|
DOMAIN_GROUP_RID_ENTERPRISE_ADMINS= 0x207,
|
|
|
|
|
DOMAIN_GROUP_RID_POLICY_ADMINS = 0x208,
|
|
|
|
|
|
|
|
|
|
/* Aliases. */
|
|
|
|
|
DOMAIN_ALIAS_RID_ADMINS = 0x220,
|
|
|
|
|
DOMAIN_ALIAS_RID_USERS = 0x221,
|
|
|
|
|
DOMAIN_ALIAS_RID_GUESTS = 0x222,
|
|
|
|
|
DOMAIN_ALIAS_RID_POWER_USERS = 0x223,
|
|
|
|
|
|
|
|
|
|
DOMAIN_ALIAS_RID_ACCOUNT_OPS = 0x224,
|
|
|
|
|
DOMAIN_ALIAS_RID_SYSTEM_OPS = 0x225,
|
|
|
|
|
DOMAIN_ALIAS_RID_PRINT_OPS = 0x226,
|
|
|
|
|
DOMAIN_ALIAS_RID_BACKUP_OPS = 0x227,
|
|
|
|
|
|
|
|
|
|
DOMAIN_ALIAS_RID_REPLICATOR = 0x228,
|
|
|
|
|
DOMAIN_ALIAS_RID_RAS_SERVERS = 0x229,
|
|
|
|
|
DOMAIN_ALIAS_RID_PREW2KCOMPACCESS = 0x22a,
|
|
|
|
|
} RELATIVE_IDENTIFIERS;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The universal well-known SIDs:
|
|
|
|
|
*
|
|
|
|
|
* NULL_SID S-1-0-0
|
|
|
|
|
* WORLD_SID S-1-1-0
|
|
|
|
|
* LOCAL_SID S-1-2-0
|
|
|
|
|
* CREATOR_OWNER_SID S-1-3-0
|
|
|
|
|
* CREATOR_GROUP_SID S-1-3-1
|
|
|
|
|
* CREATOR_OWNER_SERVER_SID S-1-3-2
|
|
|
|
|
* CREATOR_GROUP_SERVER_SID S-1-3-3
|
|
|
|
|
*
|
|
|
|
|
* (Non-unique IDs) S-1-4
|
|
|
|
|
*
|
|
|
|
|
* NT well-known SIDs:
|
|
|
|
|
*
|
|
|
|
|
* NT_AUTHORITY_SID S-1-5
|
|
|
|
|
* DIALUP_SID S-1-5-1
|
|
|
|
|
*
|
|
|
|
|
* NETWORD_SID S-1-5-2
|
|
|
|
|
* BATCH_SID S-1-5-3
|
|
|
|
|
* INTERACTIVE_SID S-1-5-4
|
|
|
|
|
* SERVICE_SID S-1-5-6
|
|
|
|
|
* ANONYMOUS_LOGON_SID S-1-5-7 (aka null logon session)
|
|
|
|
|
* PROXY_SID S-1-5-8
|
|
|
|
|
* SERVER_LOGON_SID S-1-5-9 (aka domain controller account)
|
|
|
|
|
* SELF_SID S-1-5-10 (self RID)
|
|
|
|
|
* AUTHENTICATED_USER_SID S-1-5-11
|
|
|
|
|
* RESTRICTED_CODE_SID S-1-5-12 (running restricted code)
|
|
|
|
|
* TERMINAL_SERVER_SID S-1-5-13 (running on terminal server)
|
|
|
|
|
*
|
|
|
|
|
* (Logon IDs) S-1-5-5-X-Y
|
|
|
|
|
*
|
|
|
|
|
* (NT non-unique IDs) S-1-5-0x15-...
|
|
|
|
|
*
|
|
|
|
|
* (Built-in domain) S-1-5-0x20
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* union SID_IDENTIFIER_AUTHORITY - A 48-bit value used in the SID structure
|
|
|
|
|
*
|
|
|
|
|
* NOTE: This is stored as a big endian number.
|
|
|
|
|
*/
|
|
|
|
|
typedef union {
|
|
|
|
|
struct {
|
|
|
|
|
u16 high_part; /* High 16-bits. */
|
|
|
|
|
u32 low_part; /* Low 32-bits. */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
u8 value[6]; /* Value as individual bytes. */
|
|
|
|
|
} __attribute__((__packed__)) SID_IDENTIFIER_AUTHORITY;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SID -
|
|
|
|
|
*
|
|
|
|
|
* The SID structure is a variable-length structure used to uniquely identify
|
|
|
|
|
* users or groups. SID stands for security identifier.
|
|
|
|
|
*
|
|
|
|
|
* The standard textual representation of the SID is of the form:
|
|
|
|
|
* S-R-I-S-S...
|
|
|
|
|
* Where:
|
|
|
|
|
* - The first "S" is the literal character 'S' identifying the following
|
|
|
|
|
* digits as a SID.
|
|
|
|
|
* - R is the revision level of the SID expressed as a sequence of digits
|
|
|
|
|
* in decimal.
|
|
|
|
|
* - I is the 48-bit identifier_authority, expressed as digits in decimal,
|
|
|
|
|
* if I < 2^32, or hexadecimal prefixed by "0x", if I >= 2^32.
|
|
|
|
|
* - S... is one or more sub_authority values, expressed as digits in
|
|
|
|
|
* decimal.
|
|
|
|
|
*
|
|
|
|
|
* Example SID; the domain-relative SID of the local Administrators group on
|
|
|
|
|
* Windows NT/2k:
|
|
|
|
|
* S-1-5-32-544
|
|
|
|
|
* This translates to a SID with:
|
|
|
|
|
* revision = 1,
|
|
|
|
|
* sub_authority_count = 2,
|
|
|
|
|
* identifier_authority = {0,0,0,0,0,5}, // SECURITY_NT_AUTHORITY
|
|
|
|
|
* sub_authority[0] = 32, // SECURITY_BUILTIN_DOMAIN_RID
|
|
|
|
|
* sub_authority[1] = 544 // DOMAIN_ALIAS_RID_ADMINS
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u8 revision;
|
|
|
|
|
u8 sub_authority_count;
|
|
|
|
|
SID_IDENTIFIER_AUTHORITY identifier_authority;
|
|
|
|
|
u32 sub_authority[1]; /* At least one sub_authority. */
|
|
|
|
|
} __attribute__((__packed__)) SID;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum SID_CONSTANTS - Current constants for SIDs.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
SID_REVISION = 1, /* Current revision level. */
|
|
|
|
|
SID_MAX_SUB_AUTHORITIES = 15, /* Maximum number of those. */
|
|
|
|
|
SID_RECOMMENDED_SUB_AUTHORITIES = 1, /* Will change to around 6 in
|
|
|
|
|
a future revision. */
|
|
|
|
|
} SID_CONSTANTS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum ACE_TYPES - The predefined ACE types (8-bit, see below).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
ACCESS_MIN_MS_ACE_TYPE = 0,
|
|
|
|
|
ACCESS_ALLOWED_ACE_TYPE = 0,
|
|
|
|
|
ACCESS_DENIED_ACE_TYPE = 1,
|
|
|
|
|
SYSTEM_AUDIT_ACE_TYPE = 2,
|
|
|
|
|
SYSTEM_ALARM_ACE_TYPE = 3, /* Not implemented as of Win2k. */
|
|
|
|
|
ACCESS_MAX_MS_V2_ACE_TYPE = 3,
|
|
|
|
|
|
|
|
|
|
ACCESS_ALLOWED_COMPOUND_ACE_TYPE= 4,
|
|
|
|
|
ACCESS_MAX_MS_V3_ACE_TYPE = 4,
|
|
|
|
|
|
|
|
|
|
/* The following are Win2k only. */
|
|
|
|
|
ACCESS_MIN_MS_OBJECT_ACE_TYPE = 5,
|
|
|
|
|
ACCESS_ALLOWED_OBJECT_ACE_TYPE = 5,
|
|
|
|
|
ACCESS_DENIED_OBJECT_ACE_TYPE = 6,
|
|
|
|
|
SYSTEM_AUDIT_OBJECT_ACE_TYPE = 7,
|
|
|
|
|
SYSTEM_ALARM_OBJECT_ACE_TYPE = 8,
|
|
|
|
|
ACCESS_MAX_MS_OBJECT_ACE_TYPE = 8,
|
|
|
|
|
|
|
|
|
|
ACCESS_MAX_MS_V4_ACE_TYPE = 8,
|
|
|
|
|
|
|
|
|
|
/* This one is for WinNT&2k. */
|
|
|
|
|
ACCESS_MAX_MS_ACE_TYPE = 8,
|
|
|
|
|
} __attribute__((__packed__)) ACE_TYPES;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum ACE_FLAGS - The ACE flags (8-bit) for audit and inheritance.
|
|
|
|
|
*
|
|
|
|
|
* SUCCESSFUL_ACCESS_ACE_FLAG is only used with system audit and alarm ACE
|
|
|
|
|
* types to indicate that a message is generated (in Windows!) for successful
|
|
|
|
|
* accesses.
|
|
|
|
|
*
|
|
|
|
|
* FAILED_ACCESS_ACE_FLAG is only used with system audit and alarm ACE types
|
|
|
|
|
* to indicate that a message is generated (in Windows!) for failed accesses.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
/* The inheritance flags. */
|
|
|
|
|
OBJECT_INHERIT_ACE = 0x01,
|
|
|
|
|
CONTAINER_INHERIT_ACE = 0x02,
|
|
|
|
|
NO_PROPAGATE_INHERIT_ACE = 0x04,
|
|
|
|
|
INHERIT_ONLY_ACE = 0x08,
|
|
|
|
|
INHERITED_ACE = 0x10, /* Win2k only. */
|
|
|
|
|
VALID_INHERIT_FLAGS = 0x1f,
|
|
|
|
|
|
|
|
|
|
/* The audit flags. */
|
|
|
|
|
SUCCESSFUL_ACCESS_ACE_FLAG = 0x40,
|
|
|
|
|
FAILED_ACCESS_ACE_FLAG = 0x80,
|
|
|
|
|
} __attribute__((__packed__)) ACE_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct ACE_HEADER -
|
|
|
|
|
*
|
|
|
|
|
* An ACE is an access-control entry in an access-control list (ACL).
|
|
|
|
|
* An ACE defines access to an object for a specific user or group or defines
|
|
|
|
|
* the types of access that generate system-administration messages or alarms
|
|
|
|
|
* for a specific user or group. The user or group is identified by a security
|
|
|
|
|
* identifier (SID).
|
|
|
|
|
*
|
|
|
|
|
* Each ACE starts with an ACE_HEADER structure (aligned on 4-byte boundary),
|
|
|
|
|
* which specifies the type and size of the ACE. The format of the subsequent
|
|
|
|
|
* data depends on the ACE type.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
ACE_TYPES type; /* Type of the ACE. */
|
|
|
|
|
ACE_FLAGS flags; /* Flags describing the ACE. */
|
|
|
|
|
u16 size; /* Size in bytes of the ACE. */
|
|
|
|
|
} __attribute__((__packed__)) ACE_HEADER;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum ACCESS_MASK - The access mask (32-bit).
|
|
|
|
|
*
|
|
|
|
|
* Defines the access rights.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
/*
|
|
|
|
|
* The specific rights (bits 0 to 15). Depend on the type of the
|
|
|
|
|
* object being secured by the ACE.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* Specific rights for files and directories are as follows: */
|
|
|
|
|
|
|
|
|
|
/* Right to read data from the file. (FILE) */
|
|
|
|
|
FILE_READ_DATA = const_cpu_to_le32(0x00000001),
|
|
|
|
|
/* Right to list contents of a directory. (DIRECTORY) */
|
|
|
|
|
FILE_LIST_DIRECTORY = const_cpu_to_le32(0x00000001),
|
|
|
|
|
|
|
|
|
|
/* Right to write data to the file. (FILE) */
|
|
|
|
|
FILE_WRITE_DATA = const_cpu_to_le32(0x00000002),
|
|
|
|
|
/* Right to create a file in the directory. (DIRECTORY) */
|
|
|
|
|
FILE_ADD_FILE = const_cpu_to_le32(0x00000002),
|
|
|
|
|
|
|
|
|
|
/* Right to append data to the file. (FILE) */
|
|
|
|
|
FILE_APPEND_DATA = const_cpu_to_le32(0x00000004),
|
|
|
|
|
/* Right to create a subdirectory. (DIRECTORY) */
|
|
|
|
|
FILE_ADD_SUBDIRECTORY = const_cpu_to_le32(0x00000004),
|
|
|
|
|
|
|
|
|
|
/* Right to read extended attributes. (FILE/DIRECTORY) */
|
|
|
|
|
FILE_READ_EA = const_cpu_to_le32(0x00000008),
|
|
|
|
|
|
|
|
|
|
/* Right to write extended attributes. (FILE/DIRECTORY) */
|
|
|
|
|
FILE_WRITE_EA = const_cpu_to_le32(0x00000010),
|
|
|
|
|
|
|
|
|
|
/* Right to execute a file. (FILE) */
|
|
|
|
|
FILE_EXECUTE = const_cpu_to_le32(0x00000020),
|
|
|
|
|
/* Right to traverse the directory. (DIRECTORY) */
|
|
|
|
|
FILE_TRAVERSE = const_cpu_to_le32(0x00000020),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Right to delete a directory and all the files it contains (its
|
|
|
|
|
* children), even if the files are read-only. (DIRECTORY)
|
|
|
|
|
*/
|
|
|
|
|
FILE_DELETE_CHILD = const_cpu_to_le32(0x00000040),
|
|
|
|
|
|
|
|
|
|
/* Right to read file attributes. (FILE/DIRECTORY) */
|
|
|
|
|
FILE_READ_ATTRIBUTES = const_cpu_to_le32(0x00000080),
|
|
|
|
|
|
|
|
|
|
/* Right to change file attributes. (FILE/DIRECTORY) */
|
|
|
|
|
FILE_WRITE_ATTRIBUTES = const_cpu_to_le32(0x00000100),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The standard rights (bits 16 to 23). Are independent of the type of
|
|
|
|
|
* object being secured.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* Right to delete the object. */
|
|
|
|
|
DELETE = const_cpu_to_le32(0x00010000),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Right to read the information in the object's security descriptor,
|
|
|
|
|
* not including the information in the SACL. I.e. right to read the
|
|
|
|
|
* security descriptor and owner.
|
|
|
|
|
*/
|
|
|
|
|
READ_CONTROL = const_cpu_to_le32(0x00020000),
|
|
|
|
|
|
|
|
|
|
/* Right to modify the DACL in the object's security descriptor. */
|
|
|
|
|
WRITE_DAC = const_cpu_to_le32(0x00040000),
|
|
|
|
|
|
|
|
|
|
/* Right to change the owner in the object's security descriptor. */
|
|
|
|
|
WRITE_OWNER = const_cpu_to_le32(0x00080000),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Right to use the object for synchronization. Enables a process to
|
|
|
|
|
* wait until the object is in the signalled state. Some object types
|
|
|
|
|
* do not support this access right.
|
|
|
|
|
*/
|
|
|
|
|
SYNCHRONIZE = const_cpu_to_le32(0x00100000),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The following STANDARD_RIGHTS_* are combinations of the above for
|
|
|
|
|
* convenience and are defined by the Win32 API.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* These are currently defined to READ_CONTROL. */
|
|
|
|
|
STANDARD_RIGHTS_READ = const_cpu_to_le32(0x00020000),
|
|
|
|
|
STANDARD_RIGHTS_WRITE = const_cpu_to_le32(0x00020000),
|
|
|
|
|
STANDARD_RIGHTS_EXECUTE = const_cpu_to_le32(0x00020000),
|
|
|
|
|
|
|
|
|
|
/* Combines DELETE, READ_CONTROL, WRITE_DAC, and WRITE_OWNER access. */
|
|
|
|
|
STANDARD_RIGHTS_REQUIRED = const_cpu_to_le32(0x000f0000),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Combines DELETE, READ_CONTROL, WRITE_DAC, WRITE_OWNER, and
|
|
|
|
|
* SYNCHRONIZE access.
|
|
|
|
|
*/
|
|
|
|
|
STANDARD_RIGHTS_ALL = const_cpu_to_le32(0x001f0000),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The access system ACL and maximum allowed access types (bits 24 to
|
|
|
|
|
* 25, bits 26 to 27 are reserved).
|
|
|
|
|
*/
|
|
|
|
|
ACCESS_SYSTEM_SECURITY = const_cpu_to_le32(0x01000000),
|
|
|
|
|
MAXIMUM_ALLOWED = const_cpu_to_le32(0x02000000),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The generic rights (bits 28 to 31). These map onto the standard and
|
|
|
|
|
* specific rights.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* Read, write, and execute access. */
|
|
|
|
|
GENERIC_ALL = const_cpu_to_le32(0x10000000),
|
|
|
|
|
|
|
|
|
|
/* Execute access. */
|
|
|
|
|
GENERIC_EXECUTE = const_cpu_to_le32(0x20000000),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Write access. For files, this maps onto:
|
|
|
|
|
* FILE_APPEND_DATA | FILE_WRITE_ATTRIBUTES | FILE_WRITE_DATA |
|
|
|
|
|
* FILE_WRITE_EA | STANDARD_RIGHTS_WRITE | SYNCHRONIZE
|
|
|
|
|
* For directories, the mapping has the same numerical value. See
|
|
|
|
|
* above for the descriptions of the rights granted.
|
|
|
|
|
*/
|
|
|
|
|
GENERIC_WRITE = const_cpu_to_le32(0x40000000),
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Read access. For files, this maps onto:
|
|
|
|
|
* FILE_READ_ATTRIBUTES | FILE_READ_DATA | FILE_READ_EA |
|
|
|
|
|
* STANDARD_RIGHTS_READ | SYNCHRONIZE
|
|
|
|
|
* For directories, the mapping has the same numerical value. See
|
|
|
|
|
* above for the descriptions of the rights granted.
|
|
|
|
|
*/
|
|
|
|
|
GENERIC_READ = const_cpu_to_le32(0x80000000),
|
|
|
|
|
} ACCESS_MASK;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct GENERIC_MAPPING -
|
|
|
|
|
*
|
|
|
|
|
* The generic mapping array. Used to denote the mapping of each generic
|
|
|
|
|
* access right to a specific access mask.
|
|
|
|
|
*
|
|
|
|
|
* FIXME: What exactly is this and what is it for? (AIA)
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
ACCESS_MASK generic_read;
|
|
|
|
|
ACCESS_MASK generic_write;
|
|
|
|
|
ACCESS_MASK generic_execute;
|
|
|
|
|
ACCESS_MASK generic_all;
|
|
|
|
|
} __attribute__((__packed__)) GENERIC_MAPPING;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The predefined ACE type structures are as defined below.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct ACCESS_DENIED_ACE -
|
|
|
|
|
*
|
|
|
|
|
* ACCESS_ALLOWED_ACE, ACCESS_DENIED_ACE, SYSTEM_AUDIT_ACE, SYSTEM_ALARM_ACE
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0 ACE_HEADER; -- Unfolded here as gcc doesn't like unnamed structs. */
|
|
|
|
|
ACE_TYPES type; /* Type of the ACE. */
|
|
|
|
|
ACE_FLAGS flags; /* Flags describing the ACE. */
|
|
|
|
|
u16 size; /* Size in bytes of the ACE. */
|
|
|
|
|
|
|
|
|
|
/* 4*/ ACCESS_MASK mask; /* Access mask associated with the ACE. */
|
|
|
|
|
/* 8*/ SID sid; /* The SID associated with the ACE. */
|
|
|
|
|
} __attribute__((__packed__)) ACCESS_ALLOWED_ACE, ACCESS_DENIED_ACE,
|
|
|
|
|
SYSTEM_AUDIT_ACE, SYSTEM_ALARM_ACE;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum OBJECT_ACE_FLAGS - The object ACE flags (32-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
ACE_OBJECT_TYPE_PRESENT = const_cpu_to_le32(1),
|
|
|
|
|
ACE_INHERITED_OBJECT_TYPE_PRESENT = const_cpu_to_le32(2),
|
|
|
|
|
} OBJECT_ACE_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct ACCESS_ALLOWED_OBJECT_ACE -
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0 ACE_HEADER; -- Unfolded here as gcc doesn't like unnamed structs. */
|
|
|
|
|
ACE_TYPES type; /* Type of the ACE. */
|
|
|
|
|
ACE_FLAGS flags; /* Flags describing the ACE. */
|
|
|
|
|
u16 size; /* Size in bytes of the ACE. */
|
|
|
|
|
|
|
|
|
|
/* 4*/ ACCESS_MASK mask; /* Access mask associated with the ACE. */
|
|
|
|
|
/* 8*/ OBJECT_ACE_FLAGS object_flags; /* Flags describing the object ACE. */
|
|
|
|
|
/* 12*/ GUID object_type;
|
|
|
|
|
/* 28*/ GUID inherited_object_type;
|
|
|
|
|
/* 44*/ SID sid; /* The SID associated with the ACE. */
|
|
|
|
|
} __attribute__((__packed__)) ACCESS_ALLOWED_OBJECT_ACE,
|
|
|
|
|
ACCESS_DENIED_OBJECT_ACE,
|
|
|
|
|
SYSTEM_AUDIT_OBJECT_ACE,
|
|
|
|
|
SYSTEM_ALARM_OBJECT_ACE;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct ACL - An ACL is an access-control list (ACL).
|
|
|
|
|
*
|
|
|
|
|
* An ACL starts with an ACL header structure, which specifies the size of
|
|
|
|
|
* the ACL and the number of ACEs it contains. The ACL header is followed by
|
|
|
|
|
* zero or more access control entries (ACEs). The ACL as well as each ACE
|
|
|
|
|
* are aligned on 4-byte boundaries.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u8 revision; /* Revision of this ACL. */
|
|
|
|
|
u8 alignment1;
|
|
|
|
|
u16 size; /* Allocated space in bytes for ACL. Includes this
|
|
|
|
|
header, the ACEs and the remaining free space. */
|
|
|
|
|
u16 ace_count; /* Number of ACEs in the ACL. */
|
|
|
|
|
u16 alignment2;
|
|
|
|
|
/* sizeof() = 8 bytes */
|
|
|
|
|
} __attribute__((__packed__)) ACL;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum ACL_CONSTANTS - Current constants for ACLs.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
/* Current revision. */
|
|
|
|
|
ACL_REVISION = 2,
|
|
|
|
|
ACL_REVISION_DS = 4,
|
|
|
|
|
|
|
|
|
|
/* History of revisions. */
|
|
|
|
|
ACL_REVISION1 = 1,
|
|
|
|
|
MIN_ACL_REVISION = 2,
|
|
|
|
|
ACL_REVISION2 = 2,
|
|
|
|
|
ACL_REVISION3 = 3,
|
|
|
|
|
ACL_REVISION4 = 4,
|
|
|
|
|
MAX_ACL_REVISION = 4,
|
|
|
|
|
} ACL_CONSTANTS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum SECURITY_DESCRIPTOR_CONTROL -
|
|
|
|
|
*
|
|
|
|
|
* The security descriptor control flags (16-bit).
|
|
|
|
|
*
|
|
|
|
|
* SE_OWNER_DEFAULTED - This boolean flag, when set, indicates that the
|
|
|
|
|
* SID pointed to by the Owner field was provided by a
|
|
|
|
|
* defaulting mechanism rather than explicitly provided by the
|
|
|
|
|
* original provider of the security descriptor. This may
|
|
|
|
|
* affect the treatment of the SID with respect to inheritance
|
|
|
|
|
* of an owner.
|
|
|
|
|
*
|
|
|
|
|
* SE_GROUP_DEFAULTED - This boolean flag, when set, indicates that the
|
|
|
|
|
* SID in the Group field was provided by a defaulting mechanism
|
|
|
|
|
* rather than explicitly provided by the original provider of
|
|
|
|
|
* the security descriptor. This may affect the treatment of
|
|
|
|
|
* the SID with respect to inheritance of a primary group.
|
|
|
|
|
*
|
|
|
|
|
* SE_DACL_PRESENT - This boolean flag, when set, indicates that the
|
|
|
|
|
* security descriptor contains a discretionary ACL. If this
|
|
|
|
|
* flag is set and the Dacl field of the SECURITY_DESCRIPTOR is
|
|
|
|
|
* null, then a null ACL is explicitly being specified.
|
|
|
|
|
*
|
|
|
|
|
* SE_DACL_DEFAULTED - This boolean flag, when set, indicates that the
|
|
|
|
|
* ACL pointed to by the Dacl field was provided by a defaulting
|
|
|
|
|
* mechanism rather than explicitly provided by the original
|
|
|
|
|
* provider of the security descriptor. This may affect the
|
|
|
|
|
* treatment of the ACL with respect to inheritance of an ACL.
|
|
|
|
|
* This flag is ignored if the DaclPresent flag is not set.
|
|
|
|
|
*
|
|
|
|
|
* SE_SACL_PRESENT - This boolean flag, when set, indicates that the
|
|
|
|
|
* security descriptor contains a system ACL pointed to by the
|
|
|
|
|
* Sacl field. If this flag is set and the Sacl field of the
|
|
|
|
|
* SECURITY_DESCRIPTOR is null, then an empty (but present)
|
|
|
|
|
* ACL is being specified.
|
|
|
|
|
*
|
|
|
|
|
* SE_SACL_DEFAULTED - This boolean flag, when set, indicates that the
|
|
|
|
|
* ACL pointed to by the Sacl field was provided by a defaulting
|
|
|
|
|
* mechanism rather than explicitly provided by the original
|
|
|
|
|
* provider of the security descriptor. This may affect the
|
|
|
|
|
* treatment of the ACL with respect to inheritance of an ACL.
|
|
|
|
|
* This flag is ignored if the SaclPresent flag is not set.
|
|
|
|
|
*
|
|
|
|
|
* SE_SELF_RELATIVE - This boolean flag, when set, indicates that the
|
|
|
|
|
* security descriptor is in self-relative form. In this form,
|
|
|
|
|
* all fields of the security descriptor are contiguous in memory
|
|
|
|
|
* and all pointer fields are expressed as offsets from the
|
|
|
|
|
* beginning of the security descriptor.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
SE_OWNER_DEFAULTED = const_cpu_to_le16(0x0001),
|
|
|
|
|
SE_GROUP_DEFAULTED = const_cpu_to_le16(0x0002),
|
|
|
|
|
SE_DACL_PRESENT = const_cpu_to_le16(0x0004),
|
|
|
|
|
SE_DACL_DEFAULTED = const_cpu_to_le16(0x0008),
|
|
|
|
|
SE_SACL_PRESENT = const_cpu_to_le16(0x0010),
|
|
|
|
|
SE_SACL_DEFAULTED = const_cpu_to_le16(0x0020),
|
|
|
|
|
SE_DACL_AUTO_INHERIT_REQ = const_cpu_to_le16(0x0100),
|
|
|
|
|
SE_SACL_AUTO_INHERIT_REQ = const_cpu_to_le16(0x0200),
|
|
|
|
|
SE_DACL_AUTO_INHERITED = const_cpu_to_le16(0x0400),
|
|
|
|
|
SE_SACL_AUTO_INHERITED = const_cpu_to_le16(0x0800),
|
|
|
|
|
SE_DACL_PROTECTED = const_cpu_to_le16(0x1000),
|
|
|
|
|
SE_SACL_PROTECTED = const_cpu_to_le16(0x2000),
|
|
|
|
|
SE_RM_CONTROL_VALID = const_cpu_to_le16(0x4000),
|
|
|
|
|
SE_SELF_RELATIVE = const_cpu_to_le16(0x8000),
|
|
|
|
|
} __attribute__((__packed__)) SECURITY_DESCRIPTOR_CONTROL;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SECURITY_DESCRIPTOR_RELATIVE -
|
|
|
|
|
*
|
|
|
|
|
* Self-relative security descriptor. Contains the owner and group SIDs as well
|
|
|
|
|
* as the sacl and dacl ACLs inside the security descriptor itself.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u8 revision; /* Revision level of the security descriptor. */
|
|
|
|
|
u8 alignment;
|
|
|
|
|
SECURITY_DESCRIPTOR_CONTROL control; /* Flags qualifying the type of
|
|
|
|
|
the descriptor as well as the following fields. */
|
|
|
|
|
u32 owner; /* Byte offset to a SID representing an object's
|
|
|
|
|
owner. If this is NULL, no owner SID is present in
|
|
|
|
|
the descriptor. */
|
|
|
|
|
u32 group; /* Byte offset to a SID representing an object's
|
|
|
|
|
primary group. If this is NULL, no primary group
|
|
|
|
|
SID is present in the descriptor. */
|
|
|
|
|
u32 sacl; /* Byte offset to a system ACL. Only valid, if
|
|
|
|
|
SE_SACL_PRESENT is set in the control field. If
|
|
|
|
|
SE_SACL_PRESENT is set but sacl is NULL, a NULL ACL
|
|
|
|
|
is specified. */
|
|
|
|
|
u32 dacl; /* Byte offset to a discretionary ACL. Only valid, if
|
|
|
|
|
SE_DACL_PRESENT is set in the control field. If
|
|
|
|
|
SE_DACL_PRESENT is set but dacl is NULL, a NULL ACL
|
|
|
|
|
(unconditionally granting access) is specified. */
|
|
|
|
|
/* sizeof() = 0x14 bytes */
|
|
|
|
|
} __attribute__((__packed__)) SECURITY_DESCRIPTOR_RELATIVE;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SECURITY_DESCRIPTOR - Absolute security descriptor.
|
|
|
|
|
*
|
|
|
|
|
* Does not contain the owner and group SIDs, nor the sacl and dacl ACLs inside
|
|
|
|
|
* the security descriptor. Instead, it contains pointers to these structures
|
|
|
|
|
* in memory. Obviously, absolute security descriptors are only useful for in
|
|
|
|
|
* memory representations of security descriptors.
|
|
|
|
|
*
|
|
|
|
|
* On disk, a self-relative security descriptor is used.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u8 revision; /* Revision level of the security descriptor. */
|
|
|
|
|
u8 alignment;
|
|
|
|
|
SECURITY_DESCRIPTOR_CONTROL control; /* Flags qualifying the type of
|
|
|
|
|
the descriptor as well as the following fields. */
|
|
|
|
|
SID *owner; /* Points to a SID representing an object's owner. If
|
|
|
|
|
this is NULL, no owner SID is present in the
|
|
|
|
|
descriptor. */
|
|
|
|
|
SID *group; /* Points to a SID representing an object's primary
|
|
|
|
|
group. If this is NULL, no primary group SID is
|
|
|
|
|
present in the descriptor. */
|
|
|
|
|
ACL *sacl; /* Points to a system ACL. Only valid, if
|
|
|
|
|
SE_SACL_PRESENT is set in the control field. If
|
|
|
|
|
SE_SACL_PRESENT is set but sacl is NULL, a NULL ACL
|
|
|
|
|
is specified. */
|
|
|
|
|
ACL *dacl; /* Points to a discretionary ACL. Only valid, if
|
|
|
|
|
SE_DACL_PRESENT is set in the control field. If
|
|
|
|
|
SE_DACL_PRESENT is set but dacl is NULL, a NULL ACL
|
|
|
|
|
(unconditionally granting access) is specified. */
|
|
|
|
|
} __attribute__((__packed__)) SECURITY_DESCRIPTOR;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum SECURITY_DESCRIPTOR_CONSTANTS -
|
|
|
|
|
*
|
|
|
|
|
* Current constants for security descriptors.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
/* Current revision. */
|
|
|
|
|
SECURITY_DESCRIPTOR_REVISION = 1,
|
|
|
|
|
SECURITY_DESCRIPTOR_REVISION1 = 1,
|
|
|
|
|
|
|
|
|
|
/* The sizes of both the absolute and relative security descriptors is
|
|
|
|
|
the same as pointers, at least on ia32 architecture are 32-bit. */
|
|
|
|
|
SECURITY_DESCRIPTOR_MIN_LENGTH = sizeof(SECURITY_DESCRIPTOR),
|
|
|
|
|
} SECURITY_DESCRIPTOR_CONSTANTS;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Attribute: Security descriptor (0x50).
|
|
|
|
|
*
|
|
|
|
|
* A standard self-relative security descriptor.
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Can be resident or non-resident.
|
|
|
|
|
* NOTE: Not used in NTFS 3.0+, as security descriptors are stored centrally
|
|
|
|
|
* in FILE_Secure and the correct descriptor is found using the security_id
|
|
|
|
|
* from the standard information attribute.
|
|
|
|
|
*/
|
|
|
|
|
typedef SECURITY_DESCRIPTOR_RELATIVE SECURITY_DESCRIPTOR_ATTR;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* On NTFS 3.0+, all security descriptors are stored in FILE_Secure. Only one
|
|
|
|
|
* referenced instance of each unique security descriptor is stored.
|
|
|
|
|
*
|
|
|
|
|
* FILE_Secure contains no unnamed data attribute, i.e. it has zero length. It
|
|
|
|
|
* does, however, contain two indexes ($SDH and $SII) as well as a named data
|
|
|
|
|
* stream ($SDS).
|
|
|
|
|
*
|
|
|
|
|
* Every unique security descriptor is assigned a unique security identifier
|
|
|
|
|
* (security_id, not to be confused with a SID). The security_id is unique for
|
|
|
|
|
* the NTFS volume and is used as an index into the $SII index, which maps
|
|
|
|
|
* security_ids to the security descriptor's storage location within the $SDS
|
|
|
|
|
* data attribute. The $SII index is sorted by ascending security_id.
|
|
|
|
|
*
|
|
|
|
|
* A simple hash is computed from each security descriptor. This hash is used
|
|
|
|
|
* as an index into the $SDH index, which maps security descriptor hashes to
|
|
|
|
|
* the security descriptor's storage location within the $SDS data attribute.
|
|
|
|
|
* The $SDH index is sorted by security descriptor hash and is stored in a B+
|
|
|
|
|
* tree. When searching $SDH (with the intent of determining whether or not a
|
|
|
|
|
* new security descriptor is already present in the $SDS data stream), if a
|
|
|
|
|
* matching hash is found, but the security descriptors do not match, the
|
|
|
|
|
* search in the $SDH index is continued, searching for a next matching hash.
|
|
|
|
|
*
|
|
|
|
|
* When a precise match is found, the security_id corresponding to the security
|
|
|
|
|
* descriptor in the $SDS attribute is read from the found $SDH index entry and
|
|
|
|
|
* is stored in the $STANDARD_INFORMATION attribute of the file/directory to
|
|
|
|
|
* which the security descriptor is being applied. The $STANDARD_INFORMATION
|
|
|
|
|
* attribute is present in all base mft records (i.e. in all files and
|
|
|
|
|
* directories).
|
|
|
|
|
*
|
|
|
|
|
* If a match is not found, the security descriptor is assigned a new unique
|
|
|
|
|
* security_id and is added to the $SDS data attribute. Then, entries
|
|
|
|
|
* referencing the this security descriptor in the $SDS data attribute are
|
|
|
|
|
* added to the $SDH and $SII indexes.
|
|
|
|
|
*
|
|
|
|
|
* Note: Entries are never deleted from FILE_Secure, even if nothing
|
|
|
|
|
* references an entry any more.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SECURITY_DESCRIPTOR_HEADER -
|
|
|
|
|
*
|
|
|
|
|
* This header precedes each security descriptor in the $SDS data stream.
|
|
|
|
|
* This is also the index entry data part of both the $SII and $SDH indexes.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 hash; /* Hash of the security descriptor. */
|
|
|
|
|
u32 security_id; /* The security_id assigned to the descriptor. */
|
|
|
|
|
u64 offset; /* Byte offset of this entry in the $SDS stream. */
|
|
|
|
|
u32 length; /* Size in bytes of this entry in $SDS stream. */
|
|
|
|
|
} __attribute__((__packed__)) SECURITY_DESCRIPTOR_HEADER;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SDH_INDEX_DATA -
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 hash; /* Hash of the security descriptor. */
|
|
|
|
|
u32 security_id; /* The security_id assigned to the descriptor. */
|
|
|
|
|
u64 offset; /* Byte offset of this entry in the $SDS stream. */
|
|
|
|
|
u32 length; /* Size in bytes of this entry in $SDS stream. */
|
|
|
|
|
u32 reserved_II; /* Padding - always unicode "II" or zero. This field
|
|
|
|
|
isn't counted in INDEX_ENTRY's data_length. */
|
|
|
|
|
} __attribute__((__packed__)) SDH_INDEX_DATA;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SII_INDEX_DATA -
|
|
|
|
|
*/
|
|
|
|
|
typedef SECURITY_DESCRIPTOR_HEADER SII_INDEX_DATA;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SDS_ENTRY -
|
|
|
|
|
*
|
|
|
|
|
* The $SDS data stream contains the security descriptors, aligned on 16-byte
|
|
|
|
|
* boundaries, sorted by security_id in a B+ tree. Security descriptors cannot
|
|
|
|
|
* cross 256kib boundaries (this restriction is imposed by the Windows cache
|
|
|
|
|
* manager). Each security descriptor is contained in a SDS_ENTRY structure.
|
|
|
|
|
* Also, each security descriptor is stored twice in the $SDS stream with a
|
|
|
|
|
* fixed offset of 0x40000 bytes (256kib, the Windows cache manager's max size)
|
|
|
|
|
* between them; i.e. if a SDS_ENTRY specifies an offset of 0x51d0, then the
|
|
|
|
|
* the first copy of the security descriptor will be at offset 0x51d0 in the
|
|
|
|
|
* $SDS data stream and the second copy will be at offset 0x451d0.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0 SECURITY_DESCRIPTOR_HEADER; -- Unfolded here as gcc doesn't like
|
|
|
|
|
unnamed structs. */
|
|
|
|
|
u32 hash; /* Hash of the security descriptor. */
|
|
|
|
|
u32 security_id; /* The security_id assigned to the descriptor. */
|
|
|
|
|
u64 offset; /* Byte offset of this entry in the $SDS stream. */
|
|
|
|
|
u32 length; /* Size in bytes of this entry in $SDS stream. */
|
|
|
|
|
/* 20*/ SECURITY_DESCRIPTOR_RELATIVE sid; /* The self-relative security
|
|
|
|
|
descriptor. */
|
|
|
|
|
} __attribute__((__packed__)) SDS_ENTRY;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SII_INDEX_KEY - The index entry key used in the $SII index.
|
|
|
|
|
*
|
|
|
|
|
* The collation type is COLLATION_NTOFS_ULONG.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 security_id; /* The security_id assigned to the descriptor. */
|
|
|
|
|
} __attribute__((__packed__)) SII_INDEX_KEY;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct SDH_INDEX_KEY - The index entry key used in the $SDH index.
|
|
|
|
|
*
|
|
|
|
|
* The keys are sorted first by hash and then by security_id.
|
|
|
|
|
* The collation rule is COLLATION_NTOFS_SECURITY_HASH.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 hash; /* Hash of the security descriptor. */
|
|
|
|
|
u32 security_id; /* The security_id assigned to the descriptor. */
|
|
|
|
|
} __attribute__((__packed__)) SDH_INDEX_KEY;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct VOLUME_NAME - Attribute: Volume name (0x60).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Always resident.
|
|
|
|
|
* NOTE: Present only in FILE_Volume.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
ntfschar name[0]; /* The name of the volume in Unicode. */
|
|
|
|
|
} __attribute__((__packed__)) VOLUME_NAME;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum VOLUME_FLAGS - Possible flags for the volume (16-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
VOLUME_IS_DIRTY = const_cpu_to_le16(0x0001),
|
|
|
|
|
VOLUME_RESIZE_LOG_FILE = const_cpu_to_le16(0x0002),
|
|
|
|
|
VOLUME_UPGRADE_ON_MOUNT = const_cpu_to_le16(0x0004),
|
|
|
|
|
VOLUME_MOUNTED_ON_NT4 = const_cpu_to_le16(0x0008),
|
|
|
|
|
VOLUME_DELETE_USN_UNDERWAY = const_cpu_to_le16(0x0010),
|
|
|
|
|
VOLUME_REPAIR_OBJECT_ID = const_cpu_to_le16(0x0020),
|
|
|
|
|
VOLUME_CHKDSK_UNDERWAY = const_cpu_to_le16(0x4000),
|
|
|
|
|
VOLUME_MODIFIED_BY_CHKDSK = const_cpu_to_le16(0x8000),
|
|
|
|
|
VOLUME_FLAGS_MASK = const_cpu_to_le16(0xc03f),
|
|
|
|
|
} __attribute__((__packed__)) VOLUME_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct VOLUME_INFORMATION - Attribute: Volume information (0x70).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Always resident.
|
|
|
|
|
* NOTE: Present only in FILE_Volume.
|
|
|
|
|
* NOTE: Windows 2000 uses NTFS 3.0 while Windows NT4 service pack 6a uses
|
|
|
|
|
* NTFS 1.2. I haven't personally seen other values yet.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u64 reserved; /* Not used (yet?). */
|
|
|
|
|
u8 major_ver; /* Major version of the ntfs format. */
|
|
|
|
|
u8 minor_ver; /* Minor version of the ntfs format. */
|
|
|
|
|
VOLUME_FLAGS flags; /* Bit array of VOLUME_* flags. */
|
|
|
|
|
} __attribute__((__packed__)) VOLUME_INFORMATION;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct DATA_ATTR - Attribute: Data attribute (0x80).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Can be resident or non-resident.
|
|
|
|
|
*
|
|
|
|
|
* Data contents of a file (i.e. the unnamed stream) or of a named stream.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u8 data[0]; /* The file's data contents. */
|
|
|
|
|
} __attribute__((__packed__)) DATA_ATTR;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum INDEX_HEADER_FLAGS - Index header flags (8-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
/* When index header is in an index root attribute: */
|
|
|
|
|
SMALL_INDEX = 0, /* The index is small enough to fit inside the
|
|
|
|
|
index root attribute and there is no index
|
|
|
|
|
allocation attribute present. */
|
|
|
|
|
LARGE_INDEX = 1, /* The index is too large to fit in the index
|
|
|
|
|
root attribute and/or an index allocation
|
|
|
|
|
attribute is present. */
|
|
|
|
|
/*
|
|
|
|
|
* When index header is in an index block, i.e. is part of index
|
|
|
|
|
* allocation attribute:
|
|
|
|
|
*/
|
|
|
|
|
LEAF_NODE = 0, /* This is a leaf node, i.e. there are no more
|
|
|
|
|
nodes branching off it. */
|
|
|
|
|
INDEX_NODE = 1, /* This node indexes other nodes, i.e. is not a
|
|
|
|
|
leaf node. */
|
|
|
|
|
NODE_MASK = 1, /* Mask for accessing the *_NODE bits. */
|
|
|
|
|
} __attribute__((__packed__)) INDEX_HEADER_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct INDEX_HEADER -
|
|
|
|
|
*
|
|
|
|
|
* This is the header for indexes, describing the INDEX_ENTRY records, which
|
|
|
|
|
* follow the INDEX_HEADER. Together the index header and the index entries
|
|
|
|
|
* make up a complete index.
|
|
|
|
|
*
|
|
|
|
|
* IMPORTANT NOTE: The offset, length and size structure members are counted
|
|
|
|
|
* relative to the start of the index header structure and not relative to the
|
|
|
|
|
* start of the index root or index allocation structures themselves.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0*/ u32 entries_offset; /* Byte offset from the INDEX_HEADER to first
|
|
|
|
|
INDEX_ENTRY, aligned to 8-byte boundary. */
|
|
|
|
|
/* 4*/ u32 index_length; /* Data size in byte of the INDEX_ENTRY's,
|
|
|
|
|
including the INDEX_HEADER, aligned to 8. */
|
|
|
|
|
/* 8*/ u32 allocated_size; /* Allocated byte size of this index (block),
|
|
|
|
|
multiple of 8 bytes. See more below. */
|
|
|
|
|
/*
|
|
|
|
|
For the index root attribute, the above two numbers are always
|
|
|
|
|
equal, as the attribute is resident and it is resized as needed.
|
|
|
|
|
|
|
|
|
|
For the index allocation attribute, the attribute is not resident
|
|
|
|
|
and the allocated_size is equal to the index_block_size specified
|
|
|
|
|
by the corresponding INDEX_ROOT attribute minus the INDEX_BLOCK
|
|
|
|
|
size not counting the INDEX_HEADER part (i.e. minus -24).
|
|
|
|
|
*/
|
|
|
|
|
/* 12*/ INDEX_HEADER_FLAGS ih_flags; /* Bit field of INDEX_HEADER_FLAGS. */
|
|
|
|
|
/* 13*/ u8 reserved[3]; /* Reserved/align to 8-byte boundary.*/
|
|
|
|
|
/* sizeof() == 16 */
|
|
|
|
|
} __attribute__((__packed__)) INDEX_HEADER;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct INDEX_ROOT - Attribute: Index root (0x90).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Always resident.
|
|
|
|
|
*
|
|
|
|
|
* This is followed by a sequence of index entries (INDEX_ENTRY structures)
|
|
|
|
|
* as described by the index header.
|
|
|
|
|
*
|
|
|
|
|
* When a directory is small enough to fit inside the index root then this
|
|
|
|
|
* is the only attribute describing the directory. When the directory is too
|
|
|
|
|
* large to fit in the index root, on the other hand, two additional attributes
|
|
|
|
|
* are present: an index allocation attribute, containing sub-nodes of the B+
|
|
|
|
|
* directory tree (see below), and a bitmap attribute, describing which virtual
|
|
|
|
|
* cluster numbers (vcns) in the index allocation attribute are in use by an
|
|
|
|
|
* index block.
|
|
|
|
|
*
|
|
|
|
|
* NOTE: The root directory (FILE_root) contains an entry for itself. Other
|
|
|
|
|
* directories do not contain entries for themselves, though.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0*/ ATTR_TYPES type; /* Type of the indexed attribute. Is
|
|
|
|
|
$FILE_NAME for directories, zero
|
|
|
|
|
for view indexes. No other values
|
|
|
|
|
allowed. */
|
|
|
|
|
/* 4*/ COLLATION_RULES collation_rule; /* Collation rule used to sort the
|
|
|
|
|
index entries. If type is $FILE_NAME,
|
|
|
|
|
this must be COLLATION_FILE_NAME. */
|
|
|
|
|
/* 8*/ u32 index_block_size; /* Size of index block in bytes (in
|
|
|
|
|
the index allocation attribute). */
|
|
|
|
|
/* 12*/ s8 clusters_per_index_block; /* Size of index block in clusters (in
|
|
|
|
|
the index allocation attribute), when
|
|
|
|
|
an index block is >= than a cluster,
|
|
|
|
|
otherwise sectors per index block. */
|
|
|
|
|
/* 13*/ u8 reserved[3]; /* Reserved/align to 8-byte boundary. */
|
|
|
|
|
/* 16*/ INDEX_HEADER index; /* Index header describing the
|
|
|
|
|
following index entries. */
|
|
|
|
|
/* sizeof()= 32 bytes */
|
|
|
|
|
} __attribute__((__packed__)) INDEX_ROOT;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct INDEX_BLOCK - Attribute: Index allocation (0xa0).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Always non-resident (doesn't make sense to be resident anyway!).
|
|
|
|
|
*
|
|
|
|
|
* This is an array of index blocks. Each index block starts with an
|
|
|
|
|
* INDEX_BLOCK structure containing an index header, followed by a sequence of
|
|
|
|
|
* index entries (INDEX_ENTRY structures), as described by the INDEX_HEADER.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0 NTFS_RECORD; -- Unfolded here as gcc doesn't like unnamed structs. */
|
|
|
|
|
NTFS_RECORD_TYPES magic;/* Magic is "INDX". */
|
|
|
|
|
u16 usa_ofs; /* See NTFS_RECORD definition. */
|
|
|
|
|
u16 usa_count; /* See NTFS_RECORD definition. */
|
|
|
|
|
|
|
|
|
|
/* 8*/ LSN lsn; /* $LogFile sequence number of the last
|
|
|
|
|
modification of this index block. */
|
|
|
|
|
/* 16*/ VCN index_block_vcn; /* Virtual cluster number of the index block. */
|
|
|
|
|
/* 24*/ INDEX_HEADER index; /* Describes the following index entries. */
|
|
|
|
|
/* sizeof()= 40 (0x28) bytes */
|
|
|
|
|
/*
|
|
|
|
|
* When creating the index block, we place the update sequence array at this
|
|
|
|
|
* offset, i.e. before we start with the index entries. This also makes sense,
|
|
|
|
|
* otherwise we could run into problems with the update sequence array
|
|
|
|
|
* containing in itself the last two bytes of a sector which would mean that
|
|
|
|
|
* multi sector transfer protection wouldn't work. As you can't protect data
|
|
|
|
|
* by overwriting it since you then can't get it back...
|
|
|
|
|
* When reading use the data from the ntfs record header.
|
|
|
|
|
*/
|
|
|
|
|
} __attribute__((__packed__)) INDEX_BLOCK;
|
|
|
|
|
|
|
|
|
|
typedef INDEX_BLOCK INDEX_ALLOCATION;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct REPARSE_INDEX_KEY -
|
|
|
|
|
*
|
|
|
|
|
* The system file FILE_Extend/$Reparse contains an index named $R listing
|
|
|
|
|
* all reparse points on the volume. The index entry keys are as defined
|
|
|
|
|
* below. Note, that there is no index data associated with the index entries.
|
|
|
|
|
*
|
|
|
|
|
* The index entries are sorted by the index key file_id. The collation rule is
|
|
|
|
|
* COLLATION_NTOFS_ULONGS. FIXME: Verify whether the reparse_tag is not the
|
|
|
|
|
* primary key / is not a key at all. (AIA)
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 reparse_tag; /* Reparse point type (inc. flags). */
|
|
|
|
|
MFT_REF file_id; /* Mft record of the file containing the
|
|
|
|
|
reparse point attribute. */
|
|
|
|
|
} __attribute__((__packed__)) REPARSE_INDEX_KEY;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum QUOTA_FLAGS - Quota flags (32-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
/* The user quota flags. Names explain meaning. */
|
|
|
|
|
QUOTA_FLAG_DEFAULT_LIMITS = const_cpu_to_le32(0x00000001),
|
|
|
|
|
QUOTA_FLAG_LIMIT_REACHED = const_cpu_to_le32(0x00000002),
|
|
|
|
|
QUOTA_FLAG_ID_DELETED = const_cpu_to_le32(0x00000004),
|
|
|
|
|
|
|
|
|
|
QUOTA_FLAG_USER_MASK = const_cpu_to_le32(0x00000007),
|
|
|
|
|
/* Bit mask for user quota flags. */
|
|
|
|
|
|
|
|
|
|
/* These flags are only present in the quota defaults index entry,
|
|
|
|
|
i.e. in the entry where owner_id = QUOTA_DEFAULTS_ID. */
|
|
|
|
|
QUOTA_FLAG_TRACKING_ENABLED = const_cpu_to_le32(0x00000010),
|
|
|
|
|
QUOTA_FLAG_ENFORCEMENT_ENABLED = const_cpu_to_le32(0x00000020),
|
|
|
|
|
QUOTA_FLAG_TRACKING_REQUESTED = const_cpu_to_le32(0x00000040),
|
|
|
|
|
QUOTA_FLAG_LOG_THRESHOLD = const_cpu_to_le32(0x00000080),
|
|
|
|
|
QUOTA_FLAG_LOG_LIMIT = const_cpu_to_le32(0x00000100),
|
|
|
|
|
QUOTA_FLAG_OUT_OF_DATE = const_cpu_to_le32(0x00000200),
|
|
|
|
|
QUOTA_FLAG_CORRUPT = const_cpu_to_le32(0x00000400),
|
|
|
|
|
QUOTA_FLAG_PENDING_DELETES = const_cpu_to_le32(0x00000800),
|
|
|
|
|
} QUOTA_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct QUOTA_CONTROL_ENTRY -
|
|
|
|
|
*
|
|
|
|
|
* The system file FILE_Extend/$Quota contains two indexes $O and $Q. Quotas
|
|
|
|
|
* are on a per volume and per user basis.
|
|
|
|
|
*
|
|
|
|
|
* The $Q index contains one entry for each existing user_id on the volume. The
|
|
|
|
|
* index key is the user_id of the user/group owning this quota control entry,
|
|
|
|
|
* i.e. the key is the owner_id. The user_id of the owner of a file, i.e. the
|
|
|
|
|
* owner_id, is found in the standard information attribute. The collation rule
|
|
|
|
|
* for $Q is COLLATION_NTOFS_ULONG.
|
|
|
|
|
*
|
|
|
|
|
* The $O index contains one entry for each user/group who has been assigned
|
|
|
|
|
* a quota on that volume. The index key holds the SID of the user_id the
|
|
|
|
|
* entry belongs to, i.e. the owner_id. The collation rule for $O is
|
|
|
|
|
* COLLATION_NTOFS_SID.
|
|
|
|
|
*
|
|
|
|
|
* The $O index entry data is the user_id of the user corresponding to the SID.
|
|
|
|
|
* This user_id is used as an index into $Q to find the quota control entry
|
|
|
|
|
* associated with the SID.
|
|
|
|
|
*
|
|
|
|
|
* The $Q index entry data is the quota control entry and is defined below.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 version; /* Currently equals 2. */
|
|
|
|
|
QUOTA_FLAGS flags; /* Flags describing this quota entry. */
|
|
|
|
|
u64 bytes_used; /* How many bytes of the quota are in use. */
|
|
|
|
|
s64 change_time; /* Last time this quota entry was changed. */
|
|
|
|
|
s64 threshold; /* Soft quota (-1 if not limited). */
|
|
|
|
|
s64 limit; /* Hard quota (-1 if not limited). */
|
|
|
|
|
s64 exceeded_time; /* How long the soft quota has been exceeded. */
|
|
|
|
|
/* The below field is NOT present for the quota defaults entry. */
|
|
|
|
|
SID sid; /* The SID of the user/object associated with
|
|
|
|
|
this quota entry. If this field is missing
|
2012-02-05 21:43:39 +01:00
|
|
|
then the INDEX_ENTRY is padded to a multiple
|
|
|
|
|
of 8 with zeros which are not counted in
|
2010-12-28 15:18:25 +01:00
|
|
|
the data_length field. If the sid is present
|
|
|
|
|
then this structure is padded with zeros to
|
2012-02-05 21:43:39 +01:00
|
|
|
a multiple of 8 and the padding is counted in
|
2010-12-28 15:18:25 +01:00
|
|
|
the INDEX_ENTRY's data_length. */
|
|
|
|
|
} __attribute__((__packed__)) QUOTA_CONTROL_ENTRY;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct QUOTA_O_INDEX_DATA -
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 owner_id;
|
|
|
|
|
u32 unknown; /* Always 32. Seems to be padding and it's not
|
|
|
|
|
counted in the INDEX_ENTRY's data_length.
|
|
|
|
|
This field shouldn't be really here. */
|
|
|
|
|
} __attribute__((__packed__)) QUOTA_O_INDEX_DATA;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum PREDEFINED_OWNER_IDS - Predefined owner_id values (32-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
QUOTA_INVALID_ID = const_cpu_to_le32(0x00000000),
|
|
|
|
|
QUOTA_DEFAULTS_ID = const_cpu_to_le32(0x00000001),
|
|
|
|
|
QUOTA_FIRST_USER_ID = const_cpu_to_le32(0x00000100),
|
|
|
|
|
} PREDEFINED_OWNER_IDS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum INDEX_ENTRY_FLAGS - Index entry flags (16-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
INDEX_ENTRY_NODE = const_cpu_to_le16(1), /* This entry contains a
|
|
|
|
|
sub-node, i.e. a reference to an index
|
|
|
|
|
block in form of a virtual cluster
|
|
|
|
|
number (see below). */
|
|
|
|
|
INDEX_ENTRY_END = const_cpu_to_le16(2), /* This signifies the last
|
|
|
|
|
entry in an index block. The index
|
|
|
|
|
entry does not represent a file but it
|
|
|
|
|
can point to a sub-node. */
|
|
|
|
|
INDEX_ENTRY_SPACE_FILLER = 0xffff, /* Just to force 16-bit width. */
|
|
|
|
|
} __attribute__((__packed__)) INDEX_ENTRY_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct INDEX_ENTRY_HEADER - This the index entry header (see below).
|
|
|
|
|
*
|
|
|
|
|
* ==========================================================
|
|
|
|
|
* !!!!! SEE DESCRIPTION OF THE FIELDS AT INDEX_ENTRY !!!!!
|
|
|
|
|
* ==========================================================
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0*/ union {
|
|
|
|
|
MFT_REF indexed_file;
|
|
|
|
|
struct {
|
|
|
|
|
u16 data_offset;
|
|
|
|
|
u16 data_length;
|
|
|
|
|
u32 reservedV;
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
/* 8*/ u16 length;
|
|
|
|
|
/* 10*/ u16 key_length;
|
|
|
|
|
/* 12*/ INDEX_ENTRY_FLAGS flags;
|
|
|
|
|
/* 14*/ u16 reserved;
|
|
|
|
|
/* sizeof() = 16 bytes */
|
|
|
|
|
} __attribute__((__packed__)) INDEX_ENTRY_HEADER;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct INDEX_ENTRY - This is an index entry.
|
|
|
|
|
*
|
|
|
|
|
* A sequence of such entries follows each INDEX_HEADER structure. Together
|
|
|
|
|
* they make up a complete index. The index follows either an index root
|
|
|
|
|
* attribute or an index allocation attribute.
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Before NTFS 3.0 only filename attributes were indexed.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0 INDEX_ENTRY_HEADER; -- Unfolded here as gcc dislikes unnamed structs. */
|
|
|
|
|
union { /* Only valid when INDEX_ENTRY_END is not set. */
|
|
|
|
|
MFT_REF indexed_file; /* The mft reference of the file
|
|
|
|
|
described by this index
|
|
|
|
|
entry. Used for directory
|
|
|
|
|
indexes. */
|
|
|
|
|
struct { /* Used for views/indexes to find the entry's data. */
|
|
|
|
|
u16 data_offset; /* Data byte offset from this
|
|
|
|
|
INDEX_ENTRY. Follows the
|
|
|
|
|
index key. */
|
|
|
|
|
u16 data_length; /* Data length in bytes. */
|
|
|
|
|
u32 reservedV; /* Reserved (zero). */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
/* 8*/ u16 length; /* Byte size of this index entry, multiple of
|
|
|
|
|
8-bytes. Size includes INDEX_ENTRY_HEADER
|
|
|
|
|
and the optional subnode VCN. See below. */
|
|
|
|
|
/* 10*/ u16 key_length; /* Byte size of the key value, which is in the
|
|
|
|
|
index entry. It follows field reserved. Not
|
|
|
|
|
multiple of 8-bytes. */
|
|
|
|
|
/* 12*/ INDEX_ENTRY_FLAGS ie_flags; /* Bit field of INDEX_ENTRY_* flags. */
|
|
|
|
|
/* 14*/ u16 reserved; /* Reserved/align to 8-byte boundary. */
|
|
|
|
|
/* End of INDEX_ENTRY_HEADER */
|
|
|
|
|
/* 16*/ union { /* The key of the indexed attribute. NOTE: Only present
|
|
|
|
|
if INDEX_ENTRY_END bit in flags is not set. NOTE: On
|
|
|
|
|
NTFS versions before 3.0 the only valid key is the
|
|
|
|
|
FILE_NAME_ATTR. On NTFS 3.0+ the following
|
|
|
|
|
additional index keys are defined: */
|
|
|
|
|
FILE_NAME_ATTR file_name;/* $I30 index in directories. */
|
|
|
|
|
SII_INDEX_KEY sii; /* $SII index in $Secure. */
|
|
|
|
|
SDH_INDEX_KEY sdh; /* $SDH index in $Secure. */
|
|
|
|
|
GUID object_id; /* $O index in FILE_Extend/$ObjId: The
|
|
|
|
|
object_id of the mft record found in
|
|
|
|
|
the data part of the index. */
|
|
|
|
|
REPARSE_INDEX_KEY reparse; /* $R index in
|
|
|
|
|
FILE_Extend/$Reparse. */
|
|
|
|
|
SID sid; /* $O index in FILE_Extend/$Quota:
|
|
|
|
|
SID of the owner of the user_id. */
|
|
|
|
|
u32 owner_id; /* $Q index in FILE_Extend/$Quota:
|
|
|
|
|
user_id of the owner of the quota
|
|
|
|
|
control entry in the data part of
|
|
|
|
|
the index. */
|
|
|
|
|
} __attribute__((__packed__)) key;
|
|
|
|
|
/* The (optional) index data is inserted here when creating.
|
|
|
|
|
VCN vcn; If INDEX_ENTRY_NODE bit in ie_flags is set, the last
|
|
|
|
|
eight bytes of this index entry contain the virtual
|
|
|
|
|
cluster number of the index block that holds the
|
|
|
|
|
entries immediately preceding the current entry.
|
|
|
|
|
|
|
|
|
|
If the key_length is zero, then the vcn immediately
|
|
|
|
|
follows the INDEX_ENTRY_HEADER.
|
|
|
|
|
|
|
|
|
|
The address of the vcn of "ie" INDEX_ENTRY is given by
|
|
|
|
|
(char*)ie + le16_to_cpu(ie->length) - sizeof(VCN)
|
|
|
|
|
*/
|
|
|
|
|
} __attribute__((__packed__)) INDEX_ENTRY;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct BITMAP_ATTR - Attribute: Bitmap (0xb0).
|
|
|
|
|
*
|
|
|
|
|
* Contains an array of bits (aka a bitfield).
|
|
|
|
|
*
|
|
|
|
|
* When used in conjunction with the index allocation attribute, each bit
|
|
|
|
|
* corresponds to one index block within the index allocation attribute. Thus
|
|
|
|
|
* the number of bits in the bitmap * index block size / cluster size is the
|
|
|
|
|
* number of clusters in the index allocation attribute.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u8 bitmap[0]; /* Array of bits. */
|
|
|
|
|
} __attribute__((__packed__)) BITMAP_ATTR;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum PREDEFINED_REPARSE_TAGS -
|
|
|
|
|
*
|
|
|
|
|
* The reparse point tag defines the type of the reparse point. It also
|
|
|
|
|
* includes several flags, which further describe the reparse point.
|
|
|
|
|
*
|
|
|
|
|
* The reparse point tag is an unsigned 32-bit value divided in three parts:
|
|
|
|
|
*
|
|
|
|
|
* 1. The least significant 16 bits (i.e. bits 0 to 15) specify the type of
|
|
|
|
|
* the reparse point.
|
|
|
|
|
* 2. The 13 bits after this (i.e. bits 16 to 28) are reserved for future use.
|
|
|
|
|
* 3. The most significant three bits are flags describing the reparse point.
|
|
|
|
|
* They are defined as follows:
|
|
|
|
|
* bit 29: Name surrogate bit. If set, the filename is an alias for
|
|
|
|
|
* another object in the system.
|
|
|
|
|
* bit 30: High-latency bit. If set, accessing the first byte of data will
|
|
|
|
|
* be slow. (E.g. the data is stored on a tape drive.)
|
|
|
|
|
* bit 31: Microsoft bit. If set, the tag is owned by Microsoft. User
|
|
|
|
|
* defined tags have to use zero here.
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
IO_REPARSE_TAG_IS_ALIAS = const_cpu_to_le32(0x20000000),
|
|
|
|
|
IO_REPARSE_TAG_IS_HIGH_LATENCY = const_cpu_to_le32(0x40000000),
|
|
|
|
|
IO_REPARSE_TAG_IS_MICROSOFT = const_cpu_to_le32(0x80000000),
|
|
|
|
|
|
|
|
|
|
IO_REPARSE_TAG_RESERVED_ZERO = const_cpu_to_le32(0x00000000),
|
|
|
|
|
IO_REPARSE_TAG_RESERVED_ONE = const_cpu_to_le32(0x00000001),
|
|
|
|
|
IO_REPARSE_TAG_RESERVED_RANGE = const_cpu_to_le32(0x00000001),
|
|
|
|
|
|
|
|
|
|
IO_REPARSE_TAG_NSS = const_cpu_to_le32(0x68000005),
|
|
|
|
|
IO_REPARSE_TAG_NSS_RECOVER = const_cpu_to_le32(0x68000006),
|
|
|
|
|
IO_REPARSE_TAG_SIS = const_cpu_to_le32(0x68000007),
|
|
|
|
|
IO_REPARSE_TAG_DFS = const_cpu_to_le32(0x68000008),
|
|
|
|
|
|
|
|
|
|
IO_REPARSE_TAG_MOUNT_POINT = const_cpu_to_le32(0x88000003),
|
|
|
|
|
|
|
|
|
|
IO_REPARSE_TAG_HSM = const_cpu_to_le32(0xa8000004),
|
|
|
|
|
|
|
|
|
|
IO_REPARSE_TAG_SYMBOLIC_LINK = const_cpu_to_le32(0xe8000000),
|
|
|
|
|
|
|
|
|
|
IO_REPARSE_TAG_VALID_VALUES = const_cpu_to_le32(0xe000ffff),
|
|
|
|
|
} PREDEFINED_REPARSE_TAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct REPARSE_POINT - Attribute: Reparse point (0xc0).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Can be resident or non-resident.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 reparse_tag; /* Reparse point type (inc. flags). */
|
|
|
|
|
u16 reparse_data_length; /* Byte size of reparse data. */
|
|
|
|
|
u16 reserved; /* Align to 8-byte boundary. */
|
|
|
|
|
u8 reparse_data[0]; /* Meaning depends on reparse_tag. */
|
|
|
|
|
} __attribute__((__packed__)) REPARSE_POINT;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct EA_INFORMATION - Attribute: Extended attribute information (0xd0).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Always resident.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u16 ea_length; /* Byte size of the packed extended
|
|
|
|
|
attributes. */
|
|
|
|
|
u16 need_ea_count; /* The number of extended attributes which have
|
|
|
|
|
the NEED_EA bit set. */
|
|
|
|
|
u32 ea_query_length; /* Byte size of the buffer required to query
|
|
|
|
|
the extended attributes when calling
|
|
|
|
|
ZwQueryEaFile() in Windows NT/2k. I.e. the
|
|
|
|
|
byte size of the unpacked extended
|
|
|
|
|
attributes. */
|
|
|
|
|
} __attribute__((__packed__)) EA_INFORMATION;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* enum EA_FLAGS - Extended attribute flags (8-bit).
|
|
|
|
|
*/
|
|
|
|
|
typedef enum {
|
|
|
|
|
NEED_EA = 0x80, /* Indicate that the file to which the EA
|
|
|
|
|
belongs cannot be interpreted without
|
|
|
|
|
understanding the associated extended
|
|
|
|
|
attributes. */
|
|
|
|
|
} __attribute__((__packed__)) EA_FLAGS;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct EA_ATTR - Attribute: Extended attribute (EA) (0xe0).
|
|
|
|
|
*
|
|
|
|
|
* Like the attribute list and the index buffer list, the EA attribute value is
|
|
|
|
|
* a sequence of EA_ATTR variable length records.
|
|
|
|
|
*
|
|
|
|
|
* FIXME: It appears weird that the EA name is not Unicode. Is it true?
|
|
|
|
|
* FIXME: It seems that name is always uppercased. Is it true?
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 next_entry_offset; /* Offset to the next EA_ATTR. */
|
|
|
|
|
EA_FLAGS flags; /* Flags describing the EA. */
|
|
|
|
|
u8 name_length; /* Length of the name of the extended
|
|
|
|
|
attribute in bytes. */
|
|
|
|
|
u16 value_length; /* Byte size of the EA's value. */
|
|
|
|
|
u8 name[0]; /* Name of the EA. */
|
|
|
|
|
u8 value[0]; /* The value of the EA. Immediately
|
|
|
|
|
follows the name. */
|
|
|
|
|
} __attribute__((__packed__)) EA_ATTR;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct PROPERTY_SET - Attribute: Property set (0xf0).
|
|
|
|
|
*
|
|
|
|
|
* Intended to support Native Structure Storage (NSS) - a feature removed from
|
|
|
|
|
* NTFS 3.0 during beta testing.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* Irrelevant as feature unused. */
|
|
|
|
|
} __attribute__((__packed__)) PROPERTY_SET;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct LOGGED_UTILITY_STREAM - Attribute: Logged utility stream (0x100).
|
|
|
|
|
*
|
|
|
|
|
* NOTE: Can be resident or non-resident.
|
|
|
|
|
*
|
|
|
|
|
* Operations on this attribute are logged to the journal ($LogFile) like
|
|
|
|
|
* normal metadata changes.
|
|
|
|
|
*
|
|
|
|
|
* Used by the Encrypting File System (EFS). All encrypted files have this
|
|
|
|
|
* attribute with the name $EFS. See below for the relevant structures.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* Can be anything the creator chooses. */
|
|
|
|
|
} __attribute__((__packed__)) LOGGED_UTILITY_STREAM;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* $EFS Data Structure:
|
|
|
|
|
*
|
|
|
|
|
* The following information is about the data structures that are contained
|
|
|
|
|
* inside a logged utility stream (0x100) with a name of "$EFS".
|
|
|
|
|
*
|
|
|
|
|
* The stream starts with an instance of EFS_ATTR_HEADER.
|
|
|
|
|
*
|
|
|
|
|
* Next, at offsets offset_to_ddf_array and offset_to_drf_array (unless any of
|
|
|
|
|
* them is 0) there is a EFS_DF_ARRAY_HEADER immediately followed by a sequence
|
|
|
|
|
* of multiple data decryption/recovery fields.
|
|
|
|
|
*
|
|
|
|
|
* Each data decryption/recovery field starts with a EFS_DF_HEADER and the next
|
|
|
|
|
* one (if it exists) can be found by adding EFS_DF_HEADER->df_length bytes to
|
|
|
|
|
* the offset of the beginning of the current EFS_DF_HEADER.
|
|
|
|
|
*
|
|
|
|
|
* The data decryption/recovery field contains an EFS_DF_CERTIFICATE_HEADER, a
|
|
|
|
|
* SID, an optional GUID, an optional container name, a non-optional user name,
|
|
|
|
|
* and the encrypted FEK.
|
|
|
|
|
*
|
|
|
|
|
* Note all the below are best guesses so may have mistakes/inaccuracies.
|
|
|
|
|
* Corrections/clarifications/additions are always welcome!
|
|
|
|
|
*
|
|
|
|
|
* Ntfs.sys takes an EFS value length of <= 0x54 or > 0x40000 to BSOD, i.e. it
|
|
|
|
|
* is invalid.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct EFS_ATTR_HEADER - "$EFS" header.
|
|
|
|
|
*
|
|
|
|
|
* The header of the Logged utility stream (0x100) attribute named "$EFS".
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0*/ u32 length; /* Length of EFS attribute in bytes. */
|
|
|
|
|
u32 state; /* Always 0? */
|
|
|
|
|
u32 version; /* Efs version. Always 2? */
|
|
|
|
|
u32 crypto_api_version; /* Always 0? */
|
|
|
|
|
/* 16*/ u8 unknown4[16]; /* MD5 hash of decrypted FEK? This field is
|
|
|
|
|
created with a call to UuidCreate() so is
|
|
|
|
|
unlikely to be an MD5 hash and is more
|
|
|
|
|
likely to be GUID of this encrytped file
|
|
|
|
|
or something like that. */
|
|
|
|
|
/* 32*/ u8 unknown5[16]; /* MD5 hash of DDFs? */
|
|
|
|
|
/* 48*/ u8 unknown6[16]; /* MD5 hash of DRFs? */
|
|
|
|
|
/* 64*/ u32 offset_to_ddf_array;/* Offset in bytes to the array of data
|
|
|
|
|
decryption fields (DDF), see below. Zero if
|
|
|
|
|
no DDFs are present. */
|
|
|
|
|
u32 offset_to_drf_array;/* Offset in bytes to the array of data
|
|
|
|
|
recovery fields (DRF), see below. Zero if
|
|
|
|
|
no DRFs are present. */
|
|
|
|
|
u32 reserved; /* Reserved. */
|
|
|
|
|
} __attribute__((__packed__)) EFS_ATTR_HEADER;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct EFS_DF_ARRAY_HEADER -
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
u32 df_count; /* Number of data decryption/recovery fields in
|
|
|
|
|
the array. */
|
|
|
|
|
} __attribute__((__packed__)) EFS_DF_ARRAY_HEADER;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct EFS_DF_HEADER -
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0*/ u32 df_length; /* Length of this data decryption/recovery
|
|
|
|
|
field in bytes. */
|
|
|
|
|
u32 cred_header_offset; /* Offset in bytes to the credential header. */
|
|
|
|
|
u32 fek_size; /* Size in bytes of the encrypted file
|
|
|
|
|
encryption key (FEK). */
|
|
|
|
|
u32 fek_offset; /* Offset in bytes to the FEK from the start of
|
|
|
|
|
the data decryption/recovery field. */
|
|
|
|
|
/* 16*/ u32 unknown1; /* always 0? Might be just padding. */
|
|
|
|
|
} __attribute__((__packed__)) EFS_DF_HEADER;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct EFS_DF_CREDENTIAL_HEADER -
|
|
|
|
|
*/
|
|
|
|
|
typedef struct {
|
|
|
|
|
/* 0*/ u32 cred_length; /* Length of this credential in bytes. */
|
|
|
|
|
u32 sid_offset; /* Offset in bytes to the user's sid from start
|
|
|
|
|
of this structure. Zero if no sid is
|
|
|
|
|
present. */
|
|
|
|
|
/* 8*/ u32 type; /* Type of this credential:
|
|
|
|
|
1 = CryptoAPI container.
|
|
|
|
|
2 = Unexpected type.
|
|
|
|
|
3 = Certificate thumbprint.
|
|
|
|
|
other = Unknown type. */
|
|
|
|
|
union {
|
|
|
|
|
/* CryptoAPI container. */
|
|
|
|
|
struct {
|
|
|
|
|
/* 12*/ u32 container_name_offset; /* Offset in bytes to
|
|
|
|
|
the name of the container from start of this
|
|
|
|
|
structure (may not be zero). */
|
|
|
|
|
/* 16*/ u32 provider_name_offset; /* Offset in bytes to
|
|
|
|
|
the name of the provider from start of this
|
|
|
|
|
structure (may not be zero). */
|
|
|
|
|
u32 public_key_blob_offset; /* Offset in bytes to
|
|
|
|
|
the public key blob from start of this
|
|
|
|
|
structure. */
|
|
|
|
|
/* 24*/ u32 public_key_blob_size; /* Size in bytes of
|
|
|
|
|
public key blob. */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
/* Certificate thumbprint. */
|
|
|
|
|
struct {
|
|
|
|
|
/* 12*/ u32 cert_thumbprint_header_size; /* Size in
|
|
|
|
|
bytes of the header of the certificate
|
|
|
|
|
thumbprint. */
|
|
|
|
|
/* 16*/ u32 cert_thumbprint_header_offset; /* Offset in
|
|
|
|
|
bytes to the header of the certificate
|
|
|
|
|
thumbprint from start of this structure. */
|
|
|
|
|
u32 unknown1; /* Always 0? Might be padding... */
|
|
|
|
|
u32 unknown2; /* Always 0? Might be padding... */
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
} __attribute__((__packed__)) EFS_DF_CREDENTIAL_HEADER;
|
|
|
|
|
|
|
|
|
|
typedef EFS_DF_CREDENTIAL_HEADER EFS_DF_CRED_HEADER;
|
|
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/**
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* struct EFS_DF_CERTIFICATE_THUMBPRINT_HEADER -
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*/
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typedef struct {
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/* 0*/ u32 thumbprint_offset; /* Offset in bytes to the thumbprint. */
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u32 thumbprint_size; /* Size of thumbprint in bytes. */
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/* 8*/ u32 container_name_offset; /* Offset in bytes to the name of the
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container from start of this
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structure or 0 if no name present. */
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u32 provider_name_offset; /* Offset in bytes to the name of the
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cryptographic provider from start of
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this structure or 0 if no name
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present. */
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/* 16*/ u32 user_name_offset; /* Offset in bytes to the user name
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from start of this structure or 0 if
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no user name present. (This is also
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known as lpDisplayInformation.) */
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} __attribute__((__packed__)) EFS_DF_CERTIFICATE_THUMBPRINT_HEADER;
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typedef EFS_DF_CERTIFICATE_THUMBPRINT_HEADER EFS_DF_CERT_THUMBPRINT_HEADER;
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typedef enum {
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INTX_SYMBOLIC_LINK =
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const_cpu_to_le64(0x014B4E4C78746E49ULL), /* "IntxLNK\1" */
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INTX_CHARACTER_DEVICE =
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const_cpu_to_le64(0x0052484378746E49ULL), /* "IntxCHR\0" */
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INTX_BLOCK_DEVICE =
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const_cpu_to_le64(0x004B4C4278746E49ULL), /* "IntxBLK\0" */
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} INTX_FILE_TYPES;
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typedef struct {
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INTX_FILE_TYPES magic; /* Intx file magic. */
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union {
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/* For character and block devices. */
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struct {
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u64 major; /* Major device number. */
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u64 minor; /* Minor device number. */
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void *device_end[0]; /* Marker for offsetof(). */
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} __attribute__((__packed__));
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/* For symbolic links. */
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ntfschar target[0];
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} __attribute__((__packed__));
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} __attribute__((__packed__)) INTX_FILE;
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#endif /* defined _NTFS_LAYOUT_H */
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