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authorKonstantin Komarov <almaz.alexandrovich@paragon-software.com>2021-08-13 17:21:29 +0300
committerKonstantin Komarov <almaz.alexandrovich@paragon-software.com>2021-08-13 07:52:52 -0700
commit4534a70b7056fd4b9a1c6db5a4ce3c98546b291e (patch)
tree5b4817eceff22b2a43faa82037116310840a10cc /fs/ntfs3/ntfs.h
parent36a21d51725af2ce0700c6ebcb6b9594aac658a6 (diff)
fs/ntfs3: Add headers and misc files
This adds headers and misc files Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Diffstat (limited to 'fs/ntfs3/ntfs.h')
-rw-r--r--fs/ntfs3/ntfs.h1238
1 files changed, 1238 insertions, 0 deletions
diff --git a/fs/ntfs3/ntfs.h b/fs/ntfs3/ntfs.h
new file mode 100644
index 000000000000..40398e6c39c9
--- /dev/null
+++ b/fs/ntfs3/ntfs.h
@@ -0,0 +1,1238 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *
+ * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
+ *
+ * on-disk ntfs structs
+ */
+
+// clang-format off
+
+/* TODO:
+ * - Check 4K mft record and 512 bytes cluster
+ */
+
+/*
+ * Activate this define to use binary search in indexes
+ */
+#define NTFS3_INDEX_BINARY_SEARCH
+
+/*
+ * Check each run for marked clusters
+ */
+#define NTFS3_CHECK_FREE_CLST
+
+#define NTFS_NAME_LEN 255
+
+/*
+ * ntfs.sys used 500 maximum links
+ * on-disk struct allows up to 0xffff
+ */
+#define NTFS_LINK_MAX 0x400
+//#define NTFS_LINK_MAX 0xffff
+
+/*
+ * Activate to use 64 bit clusters instead of 32 bits in ntfs.sys
+ * Logical and virtual cluster number
+ * If needed, may be redefined to use 64 bit value
+ */
+//#define CONFIG_NTFS3_64BIT_CLUSTER
+
+#define NTFS_LZNT_MAX_CLUSTER 4096
+#define NTFS_LZNT_CUNIT 4
+#define NTFS_LZNT_CLUSTERS (1u<<NTFS_LZNT_CUNIT)
+
+struct GUID {
+ __le32 Data1;
+ __le16 Data2;
+ __le16 Data3;
+ u8 Data4[8];
+};
+
+/*
+ * this struct repeats layout of ATTR_FILE_NAME
+ * at offset 0x40
+ * it used to store global constants NAME_MFT/NAME_MIRROR...
+ * most constant names are shorter than 10
+ */
+struct cpu_str {
+ u8 len;
+ u8 unused;
+ u16 name[10];
+};
+
+struct le_str {
+ u8 len;
+ u8 unused;
+ __le16 name[];
+};
+
+static_assert(SECTOR_SHIFT == 9);
+
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
+typedef u64 CLST;
+static_assert(sizeof(size_t) == 8);
+#else
+typedef u32 CLST;
+#endif
+
+#define SPARSE_LCN64 ((u64)-1)
+#define SPARSE_LCN ((CLST)-1)
+#define RESIDENT_LCN ((CLST)-2)
+#define COMPRESSED_LCN ((CLST)-3)
+
+#define COMPRESSION_UNIT 4
+#define COMPRESS_MAX_CLUSTER 0x1000
+#define MFT_INCREASE_CHUNK 1024
+
+enum RECORD_NUM {
+ MFT_REC_MFT = 0,
+ MFT_REC_MIRR = 1,
+ MFT_REC_LOG = 2,
+ MFT_REC_VOL = 3,
+ MFT_REC_ATTR = 4,
+ MFT_REC_ROOT = 5,
+ MFT_REC_BITMAP = 6,
+ MFT_REC_BOOT = 7,
+ MFT_REC_BADCLUST = 8,
+ //MFT_REC_QUOTA = 9,
+ MFT_REC_SECURE = 9, // NTFS 3.0
+ MFT_REC_UPCASE = 10,
+ MFT_REC_EXTEND = 11, // NTFS 3.0
+ MFT_REC_RESERVED = 11,
+ MFT_REC_FREE = 16,
+ MFT_REC_USER = 24,
+};
+
+enum ATTR_TYPE {
+ ATTR_ZERO = cpu_to_le32(0x00),
+ ATTR_STD = cpu_to_le32(0x10),
+ ATTR_LIST = cpu_to_le32(0x20),
+ ATTR_NAME = cpu_to_le32(0x30),
+ // ATTR_VOLUME_VERSION on Nt4
+ ATTR_ID = cpu_to_le32(0x40),
+ ATTR_SECURE = cpu_to_le32(0x50),
+ ATTR_LABEL = cpu_to_le32(0x60),
+ ATTR_VOL_INFO = cpu_to_le32(0x70),
+ ATTR_DATA = cpu_to_le32(0x80),
+ ATTR_ROOT = cpu_to_le32(0x90),
+ ATTR_ALLOC = cpu_to_le32(0xA0),
+ ATTR_BITMAP = cpu_to_le32(0xB0),
+ // ATTR_SYMLINK on Nt4
+ ATTR_REPARSE = cpu_to_le32(0xC0),
+ ATTR_EA_INFO = cpu_to_le32(0xD0),
+ ATTR_EA = cpu_to_le32(0xE0),
+ ATTR_PROPERTYSET = cpu_to_le32(0xF0),
+ ATTR_LOGGED_UTILITY_STREAM = cpu_to_le32(0x100),
+ ATTR_END = cpu_to_le32(0xFFFFFFFF)
+};
+
+static_assert(sizeof(enum ATTR_TYPE) == 4);
+
+enum FILE_ATTRIBUTE {
+ FILE_ATTRIBUTE_READONLY = cpu_to_le32(0x00000001),
+ FILE_ATTRIBUTE_HIDDEN = cpu_to_le32(0x00000002),
+ FILE_ATTRIBUTE_SYSTEM = cpu_to_le32(0x00000004),
+ FILE_ATTRIBUTE_ARCHIVE = cpu_to_le32(0x00000020),
+ FILE_ATTRIBUTE_DEVICE = cpu_to_le32(0x00000040),
+ FILE_ATTRIBUTE_TEMPORARY = cpu_to_le32(0x00000100),
+ FILE_ATTRIBUTE_SPARSE_FILE = cpu_to_le32(0x00000200),
+ FILE_ATTRIBUTE_REPARSE_POINT = cpu_to_le32(0x00000400),
+ FILE_ATTRIBUTE_COMPRESSED = cpu_to_le32(0x00000800),
+ FILE_ATTRIBUTE_OFFLINE = cpu_to_le32(0x00001000),
+ FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = cpu_to_le32(0x00002000),
+ FILE_ATTRIBUTE_ENCRYPTED = cpu_to_le32(0x00004000),
+ FILE_ATTRIBUTE_VALID_FLAGS = cpu_to_le32(0x00007fb7),
+ FILE_ATTRIBUTE_DIRECTORY = cpu_to_le32(0x10000000),
+};
+
+static_assert(sizeof(enum FILE_ATTRIBUTE) == 4);
+
+extern const struct cpu_str NAME_MFT;
+extern const struct cpu_str NAME_MIRROR;
+extern const struct cpu_str NAME_LOGFILE;
+extern const struct cpu_str NAME_VOLUME;
+extern const struct cpu_str NAME_ATTRDEF;
+extern const struct cpu_str NAME_ROOT;
+extern const struct cpu_str NAME_BITMAP;
+extern const struct cpu_str NAME_BOOT;
+extern const struct cpu_str NAME_BADCLUS;
+extern const struct cpu_str NAME_QUOTA;
+extern const struct cpu_str NAME_SECURE;
+extern const struct cpu_str NAME_UPCASE;
+extern const struct cpu_str NAME_EXTEND;
+extern const struct cpu_str NAME_OBJID;
+extern const struct cpu_str NAME_REPARSE;
+extern const struct cpu_str NAME_USNJRNL;
+
+extern const __le16 I30_NAME[4];
+extern const __le16 SII_NAME[4];
+extern const __le16 SDH_NAME[4];
+extern const __le16 SO_NAME[2];
+extern const __le16 SQ_NAME[2];
+extern const __le16 SR_NAME[2];
+
+extern const __le16 BAD_NAME[4];
+extern const __le16 SDS_NAME[4];
+extern const __le16 WOF_NAME[17]; /* WofCompressedData */
+
+/* MFT record number structure */
+struct MFT_REF {
+ __le32 low; // The low part of the number
+ __le16 high; // The high part of the number
+ __le16 seq; // The sequence number of MFT record
+};
+
+static_assert(sizeof(__le64) == sizeof(struct MFT_REF));
+
+static inline CLST ino_get(const struct MFT_REF *ref)
+{
+#ifdef CONFIG_NTFS3_64BIT_CLUSTER
+ return le32_to_cpu(ref->low) | ((u64)le16_to_cpu(ref->high) << 32);
+#else
+ return le32_to_cpu(ref->low);
+#endif
+}
+
+struct NTFS_BOOT {
+ u8 jump_code[3]; // 0x00: Jump to boot code
+ u8 system_id[8]; // 0x03: System ID, equals "NTFS "
+
+ // NOTE: this member is not aligned(!)
+ // bytes_per_sector[0] must be 0
+ // bytes_per_sector[1] must be multiplied by 256
+ u8 bytes_per_sector[2]; // 0x0B: Bytes per sector
+
+ u8 sectors_per_clusters;// 0x0D: Sectors per cluster
+ u8 unused1[7];
+ u8 media_type; // 0x15: Media type (0xF8 - harddisk)
+ u8 unused2[2];
+ __le16 sct_per_track; // 0x18: number of sectors per track
+ __le16 heads; // 0x1A: number of heads per cylinder
+ __le32 hidden_sectors; // 0x1C: number of 'hidden' sectors
+ u8 unused3[4];
+ u8 bios_drive_num; // 0x24: BIOS drive number =0x80
+ u8 unused4;
+ u8 signature_ex; // 0x26: Extended BOOT signature =0x80
+ u8 unused5;
+ __le64 sectors_per_volume;// 0x28: size of volume in sectors
+ __le64 mft_clst; // 0x30: first cluster of $MFT
+ __le64 mft2_clst; // 0x38: first cluster of $MFTMirr
+ s8 record_size; // 0x40: size of MFT record in clusters(sectors)
+ u8 unused6[3];
+ s8 index_size; // 0x44: size of INDX record in clusters(sectors)
+ u8 unused7[3];
+ __le64 serial_num; // 0x48: Volume serial number
+ __le32 check_sum; // 0x50: Simple additive checksum of all
+ // of the u32's which precede the 'check_sum'
+
+ u8 boot_code[0x200 - 0x50 - 2 - 4]; // 0x54:
+ u8 boot_magic[2]; // 0x1FE: Boot signature =0x55 + 0xAA
+};
+
+static_assert(sizeof(struct NTFS_BOOT) == 0x200);
+
+enum NTFS_SIGNATURE {
+ NTFS_FILE_SIGNATURE = cpu_to_le32(0x454C4946), // 'FILE'
+ NTFS_INDX_SIGNATURE = cpu_to_le32(0x58444E49), // 'INDX'
+ NTFS_CHKD_SIGNATURE = cpu_to_le32(0x444B4843), // 'CHKD'
+ NTFS_RSTR_SIGNATURE = cpu_to_le32(0x52545352), // 'RSTR'
+ NTFS_RCRD_SIGNATURE = cpu_to_le32(0x44524352), // 'RCRD'
+ NTFS_BAAD_SIGNATURE = cpu_to_le32(0x44414142), // 'BAAD'
+ NTFS_HOLE_SIGNATURE = cpu_to_le32(0x454C4F48), // 'HOLE'
+ NTFS_FFFF_SIGNATURE = cpu_to_le32(0xffffffff),
+};
+
+static_assert(sizeof(enum NTFS_SIGNATURE) == 4);
+
+/* MFT Record header structure */
+struct NTFS_RECORD_HEADER {
+ /* Record magic number, equals 'FILE'/'INDX'/'RSTR'/'RCRD' */
+ enum NTFS_SIGNATURE sign; // 0x00:
+ __le16 fix_off; // 0x04:
+ __le16 fix_num; // 0x06:
+ __le64 lsn; // 0x08: Log file sequence number
+};
+
+static_assert(sizeof(struct NTFS_RECORD_HEADER) == 0x10);
+
+static inline int is_baad(const struct NTFS_RECORD_HEADER *hdr)
+{
+ return hdr->sign == NTFS_BAAD_SIGNATURE;
+}
+
+/* Possible bits in struct MFT_REC.flags */
+enum RECORD_FLAG {
+ RECORD_FLAG_IN_USE = cpu_to_le16(0x0001),
+ RECORD_FLAG_DIR = cpu_to_le16(0x0002),
+ RECORD_FLAG_SYSTEM = cpu_to_le16(0x0004),
+ RECORD_FLAG_UNKNOWN = cpu_to_le16(0x0008),
+};
+
+/* MFT Record structure */
+struct MFT_REC {
+ struct NTFS_RECORD_HEADER rhdr; // 'FILE'
+
+ __le16 seq; // 0x10: Sequence number for this record
+ __le16 hard_links; // 0x12: The number of hard links to record
+ __le16 attr_off; // 0x14: Offset to attributes
+ __le16 flags; // 0x16: See RECORD_FLAG
+ __le32 used; // 0x18: The size of used part
+ __le32 total; // 0x1C: Total record size
+
+ struct MFT_REF parent_ref; // 0x20: Parent MFT record
+ __le16 next_attr_id; // 0x28: The next attribute Id
+
+ __le16 res; // 0x2A: High part of mft record?
+ __le32 mft_record; // 0x2C: Current mft record number
+ __le16 fixups[]; // 0x30:
+};
+
+#define MFTRECORD_FIXUP_OFFSET_1 offsetof(struct MFT_REC, res)
+#define MFTRECORD_FIXUP_OFFSET_3 offsetof(struct MFT_REC, fixups)
+
+static_assert(MFTRECORD_FIXUP_OFFSET_1 == 0x2A);
+static_assert(MFTRECORD_FIXUP_OFFSET_3 == 0x30);
+
+static inline bool is_rec_base(const struct MFT_REC *rec)
+{
+ const struct MFT_REF *r = &rec->parent_ref;
+
+ return !r->low && !r->high && !r->seq;
+}
+
+static inline bool is_mft_rec5(const struct MFT_REC *rec)
+{
+ return le16_to_cpu(rec->rhdr.fix_off) >=
+ offsetof(struct MFT_REC, fixups);
+}
+
+static inline bool is_rec_inuse(const struct MFT_REC *rec)
+{
+ return rec->flags & RECORD_FLAG_IN_USE;
+}
+
+static inline bool clear_rec_inuse(struct MFT_REC *rec)
+{
+ return rec->flags &= ~RECORD_FLAG_IN_USE;
+}
+
+/* Possible values of ATTR_RESIDENT.flags */
+#define RESIDENT_FLAG_INDEXED 0x01
+
+struct ATTR_RESIDENT {
+ __le32 data_size; // 0x10: The size of data
+ __le16 data_off; // 0x14: Offset to data
+ u8 flags; // 0x16: resident flags ( 1 - indexed )
+ u8 res; // 0x17:
+}; // sizeof() = 0x18
+
+struct ATTR_NONRESIDENT {
+ __le64 svcn; // 0x10: Starting VCN of this segment
+ __le64 evcn; // 0x18: End VCN of this segment
+ __le16 run_off; // 0x20: Offset to packed runs
+ // Unit of Compression size for this stream, expressed
+ // as a log of the cluster size.
+ //
+ // 0 means file is not compressed
+ // 1, 2, 3, and 4 are potentially legal values if the
+ // stream is compressed, however the implementation
+ // may only choose to use 4, or possibly 3. Note
+ // that 4 means cluster size time 16. If convenient
+ // the implementation may wish to accept a
+ // reasonable range of legal values here (1-5?),
+ // even if the implementation only generates
+ // a smaller set of values itself.
+ u8 c_unit; // 0x22
+ u8 res1[5]; // 0x23:
+ __le64 alloc_size; // 0x28: The allocated size of attribute in bytes
+ // (multiple of cluster size)
+ __le64 data_size; // 0x30: The size of attribute in bytes <= alloc_size
+ __le64 valid_size; // 0x38: The size of valid part in bytes <= data_size
+ __le64 total_size; // 0x40: The sum of the allocated clusters for a file
+ // (present only for the first segment (0 == vcn)
+ // of compressed attribute)
+
+}; // sizeof()=0x40 or 0x48 (if compressed)
+
+/* Possible values of ATTRIB.flags: */
+#define ATTR_FLAG_COMPRESSED cpu_to_le16(0x0001)
+#define ATTR_FLAG_COMPRESSED_MASK cpu_to_le16(0x00FF)
+#define ATTR_FLAG_ENCRYPTED cpu_to_le16(0x4000)
+#define ATTR_FLAG_SPARSED cpu_to_le16(0x8000)
+
+struct ATTRIB {
+ enum ATTR_TYPE type; // 0x00: The type of this attribute
+ __le32 size; // 0x04: The size of this attribute
+ u8 non_res; // 0x08: Is this attribute non-resident ?
+ u8 name_len; // 0x09: This attribute name length
+ __le16 name_off; // 0x0A: Offset to the attribute name
+ __le16 flags; // 0x0C: See ATTR_FLAG_XXX
+ __le16 id; // 0x0E: unique id (per record)
+
+ union {
+ struct ATTR_RESIDENT res; // 0x10
+ struct ATTR_NONRESIDENT nres; // 0x10
+ };
+};
+
+/* Define attribute sizes */
+#define SIZEOF_RESIDENT 0x18
+#define SIZEOF_NONRESIDENT_EX 0x48
+#define SIZEOF_NONRESIDENT 0x40
+
+#define SIZEOF_RESIDENT_LE cpu_to_le16(0x18)
+#define SIZEOF_NONRESIDENT_EX_LE cpu_to_le16(0x48)
+#define SIZEOF_NONRESIDENT_LE cpu_to_le16(0x40)
+
+static inline u64 attr_ondisk_size(const struct ATTRIB *attr)
+{
+ return attr->non_res ? ((attr->flags &
+ (ATTR_FLAG_COMPRESSED | ATTR_FLAG_SPARSED)) ?
+ le64_to_cpu(attr->nres.total_size) :
+ le64_to_cpu(attr->nres.alloc_size)) :
+ QuadAlign(le32_to_cpu(attr->res.data_size));
+}
+
+static inline u64 attr_size(const struct ATTRIB *attr)
+{
+ return attr->non_res ? le64_to_cpu(attr->nres.data_size) :
+ le32_to_cpu(attr->res.data_size);
+}
+
+static inline bool is_attr_encrypted(const struct ATTRIB *attr)
+{
+ return attr->flags & ATTR_FLAG_ENCRYPTED;
+}
+
+static inline bool is_attr_sparsed(const struct ATTRIB *attr)
+{
+ return attr->flags & ATTR_FLAG_SPARSED;
+}
+
+static inline bool is_attr_compressed(const struct ATTRIB *attr)
+{
+ return attr->flags & ATTR_FLAG_COMPRESSED;
+}
+
+static inline bool is_attr_ext(const struct ATTRIB *attr)
+{
+ return attr->flags & (ATTR_FLAG_SPARSED | ATTR_FLAG_COMPRESSED);
+}
+
+static inline bool is_attr_indexed(const struct ATTRIB *attr)
+{
+ return !attr->non_res && (attr->res.flags & RESIDENT_FLAG_INDEXED);
+}
+
+static inline __le16 const *attr_name(const struct ATTRIB *attr)
+{
+ return Add2Ptr(attr, le16_to_cpu(attr->name_off));
+}
+
+static inline u64 attr_svcn(const struct ATTRIB *attr)
+{
+ return attr->non_res ? le64_to_cpu(attr->nres.svcn) : 0;
+}
+
+/* the size of resident attribute by its resident size */
+#define BYTES_PER_RESIDENT(b) (0x18 + (b))
+
+static_assert(sizeof(struct ATTRIB) == 0x48);
+static_assert(sizeof(((struct ATTRIB *)NULL)->res) == 0x08);
+static_assert(sizeof(((struct ATTRIB *)NULL)->nres) == 0x38);
+
+static inline void *resident_data_ex(const struct ATTRIB *attr, u32 datasize)
+{
+ u32 asize, rsize;
+ u16 off;
+
+ if (attr->non_res)
+ return NULL;
+
+ asize = le32_to_cpu(attr->size);
+ off = le16_to_cpu(attr->res.data_off);
+
+ if (asize < datasize + off)
+ return NULL;
+
+ rsize = le32_to_cpu(attr->res.data_size);
+ if (rsize < datasize)
+ return NULL;
+
+ return Add2Ptr(attr, off);
+}
+
+static inline void *resident_data(const struct ATTRIB *attr)
+{
+ return Add2Ptr(attr, le16_to_cpu(attr->res.data_off));
+}
+
+static inline void *attr_run(const struct ATTRIB *attr)
+{
+ return Add2Ptr(attr, le16_to_cpu(attr->nres.run_off));
+}
+
+/* Standard information attribute (0x10) */
+struct ATTR_STD_INFO {
+ __le64 cr_time; // 0x00: File creation file
+ __le64 m_time; // 0x08: File modification time
+ __le64 c_time; // 0x10: Last time any attribute was modified
+ __le64 a_time; // 0x18: File last access time
+ enum FILE_ATTRIBUTE fa; // 0x20: Standard DOS attributes & more
+ __le32 max_ver_num; // 0x24: Maximum Number of Versions
+ __le32 ver_num; // 0x28: Version Number
+ __le32 class_id; // 0x2C: Class Id from bidirectional Class Id index
+};
+
+static_assert(sizeof(struct ATTR_STD_INFO) == 0x30);
+
+#define SECURITY_ID_INVALID 0x00000000
+#define SECURITY_ID_FIRST 0x00000100
+
+struct ATTR_STD_INFO5 {
+ __le64 cr_time; // 0x00: File creation file
+ __le64 m_time; // 0x08: File modification time
+ __le64 c_time; // 0x10: Last time any attribute was modified
+ __le64 a_time; // 0x18: File last access time
+ enum FILE_ATTRIBUTE fa; // 0x20: Standard DOS attributes & more
+ __le32 max_ver_num; // 0x24: Maximum Number of Versions
+ __le32 ver_num; // 0x28: Version Number
+ __le32 class_id; // 0x2C: Class Id from bidirectional Class Id index
+
+ __le32 owner_id; // 0x30: Owner Id of the user owning the file.
+ __le32 security_id; // 0x34: The Security Id is a key in the $SII Index and $SDS
+ __le64 quota_charge; // 0x38:
+ __le64 usn; // 0x40: Last Update Sequence Number of the file. This is a direct
+ // index into the file $UsnJrnl. If zero, the USN Journal is
+ // disabled.
+};
+
+static_assert(sizeof(struct ATTR_STD_INFO5) == 0x48);
+
+/* attribute list entry structure (0x20) */
+struct ATTR_LIST_ENTRY {
+ enum ATTR_TYPE type; // 0x00: The type of attribute
+ __le16 size; // 0x04: The size of this record
+ u8 name_len; // 0x06: The length of attribute name
+ u8 name_off; // 0x07: The offset to attribute name
+ __le64 vcn; // 0x08: Starting VCN of this attribute
+ struct MFT_REF ref; // 0x10: MFT record number with attribute
+ __le16 id; // 0x18: struct ATTRIB ID
+ __le16 name[3]; // 0x1A: Just to align. To get real name can use bNameOffset
+
+}; // sizeof(0x20)
+
+static_assert(sizeof(struct ATTR_LIST_ENTRY) == 0x20);
+
+static inline u32 le_size(u8 name_len)
+{
+ return QuadAlign(offsetof(struct ATTR_LIST_ENTRY, name) +
+ name_len * sizeof(short));
+}
+
+/* returns 0 if 'attr' has the same type and name */
+static inline int le_cmp(const struct ATTR_LIST_ENTRY *le,
+ const struct ATTRIB *attr)
+{
+ return le->type != attr->type || le->name_len != attr->name_len ||
+ (!le->name_len &&
+ memcmp(Add2Ptr(le, le->name_off),
+ Add2Ptr(attr, le16_to_cpu(attr->name_off)),
+ le->name_len * sizeof(short)));
+}
+
+static inline __le16 const *le_name(const struct ATTR_LIST_ENTRY *le)
+{
+ return Add2Ptr(le, le->name_off);
+}
+
+/* File name types (the field type in struct ATTR_FILE_NAME ) */
+#define FILE_NAME_POSIX 0
+#define FILE_NAME_UNICODE 1
+#define FILE_NAME_DOS 2
+#define FILE_NAME_UNICODE_AND_DOS (FILE_NAME_DOS | FILE_NAME_UNICODE)
+
+/* Filename attribute structure (0x30) */
+struct NTFS_DUP_INFO {
+ __le64 cr_time; // 0x00: File creation file
+ __le64 m_time; // 0x08: File modification time
+ __le64 c_time; // 0x10: Last time any attribute was modified
+ __le64 a_time; // 0x18: File last access time
+ __le64 alloc_size; // 0x20: Data attribute allocated size, multiple of cluster size
+ __le64 data_size; // 0x28: Data attribute size <= Dataalloc_size
+ enum FILE_ATTRIBUTE fa; // 0x30: Standard DOS attributes & more
+ __le16 ea_size; // 0x34: Packed EAs
+ __le16 reparse; // 0x36: Used by Reparse
+
+}; // 0x38
+
+struct ATTR_FILE_NAME {
+ struct MFT_REF home; // 0x00: MFT record for directory
+ struct NTFS_DUP_INFO dup;// 0x08
+ u8 name_len; // 0x40: File name length in words
+ u8 type; // 0x41: File name type
+ __le16 name[]; // 0x42: File name
+};
+
+static_assert(sizeof(((struct ATTR_FILE_NAME *)NULL)->dup) == 0x38);
+static_assert(offsetof(struct ATTR_FILE_NAME, name) == 0x42);
+#define SIZEOF_ATTRIBUTE_FILENAME 0x44
+#define SIZEOF_ATTRIBUTE_FILENAME_MAX (0x42 + 255 * 2)
+
+static inline struct ATTRIB *attr_from_name(struct ATTR_FILE_NAME *fname)
+{
+ return (struct ATTRIB *)((char *)fname - SIZEOF_RESIDENT);
+}
+
+static inline u16 fname_full_size(const struct ATTR_FILE_NAME *fname)
+{
+ // don't return struct_size(fname, name, fname->name_len);
+ return offsetof(struct ATTR_FILE_NAME, name) +
+ fname->name_len * sizeof(short);
+}
+
+static inline u8 paired_name(u8 type)
+{
+ if (type == FILE_NAME_UNICODE)
+ return FILE_NAME_DOS;
+ if (type == FILE_NAME_DOS)
+ return FILE_NAME_UNICODE;
+ return FILE_NAME_POSIX;
+}
+
+/* Index entry defines ( the field flags in NtfsDirEntry ) */
+#define NTFS_IE_HAS_SUBNODES cpu_to_le16(1)
+#define NTFS_IE_LAST cpu_to_le16(2)
+
+/* Directory entry structure */
+struct NTFS_DE {
+ union {
+ struct MFT_REF ref; // 0x00: MFT record number with this file
+ struct {
+ __le16 data_off; // 0x00:
+ __le16 data_size; // 0x02:
+ __le32 res; // 0x04: must be 0
+ } view;
+ };
+ __le16 size; // 0x08: The size of this entry
+ __le16 key_size; // 0x0A: The size of File name length in bytes + 0x42
+ __le16 flags; // 0x0C: Entry flags: NTFS_IE_XXX
+ __le16 res; // 0x0E:
+
+ // Here any indexed attribute can be placed
+ // One of them is:
+ // struct ATTR_FILE_NAME AttrFileName;
+ //
+
+ // The last 8 bytes of this structure contains
+ // the VBN of subnode
+ // !!! Note !!!
+ // This field is presented only if (flags & NTFS_IE_HAS_SUBNODES)
+ // __le64 vbn;
+};
+
+static_assert(sizeof(struct NTFS_DE) == 0x10);
+
+static inline void de_set_vbn_le(struct NTFS_DE *e, __le64 vcn)
+{
+ __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
+
+ *v = vcn;
+}
+
+static inline void de_set_vbn(struct NTFS_DE *e, CLST vcn)
+{
+ __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
+
+ *v = cpu_to_le64(vcn);
+}
+
+static inline __le64 de_get_vbn_le(const struct NTFS_DE *e)
+{
+ return *(__le64 *)Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
+}
+
+static inline CLST de_get_vbn(const struct NTFS_DE *e)
+{
+ __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
+
+ return le64_to_cpu(*v);
+}
+
+static inline struct NTFS_DE *de_get_next(const struct NTFS_DE *e)
+{
+ return Add2Ptr(e, le16_to_cpu(e->size));
+}
+
+static inline struct ATTR_FILE_NAME *de_get_fname(const struct NTFS_DE *e)
+{
+ return le16_to_cpu(e->key_size) >= SIZEOF_ATTRIBUTE_FILENAME ?
+ Add2Ptr(e, sizeof(struct NTFS_DE)) :
+ NULL;
+}
+
+static inline bool de_is_last(const struct NTFS_DE *e)
+{
+ return e->flags & NTFS_IE_LAST;
+}
+
+static inline bool de_has_vcn(const struct NTFS_DE *e)
+{
+ return e->flags & NTFS_IE_HAS_SUBNODES;
+}
+
+static inline bool de_has_vcn_ex(const struct NTFS_DE *e)
+{
+ return (e->flags & NTFS_IE_HAS_SUBNODES) &&
+ (u64)(-1) != *((u64 *)Add2Ptr(e, le16_to_cpu(e->size) -
+ sizeof(__le64)));
+}
+
+#define MAX_BYTES_PER_NAME_ENTRY \
+ QuadAlign(sizeof(struct NTFS_DE) + \
+ offsetof(struct ATTR_FILE_NAME, name) + \
+ NTFS_NAME_LEN * sizeof(short))
+
+struct INDEX_HDR {
+ __le32 de_off; // 0x00: The offset from the start of this structure
+ // to the first NTFS_DE
+ __le32 used; // 0x04: The size of this structure plus all
+ // entries (quad-word aligned)
+ __le32 total; // 0x08: The allocated size of for this structure plus all entries
+ u8 flags; // 0x0C: 0x00 = Small directory, 0x01 = Large directory
+ u8 res[3];
+
+ //
+ // de_off + used <= total
+ //
+};
+
+static_assert(sizeof(struct INDEX_HDR) == 0x10);
+
+static inline struct NTFS_DE *hdr_first_de(const struct INDEX_HDR *hdr)
+{
+ u32 de_off = le32_to_cpu(hdr->de_off);
+ u32 used = le32_to_cpu(hdr->used);
+ struct NTFS_DE *e = Add2Ptr(hdr, de_off);
+ u16 esize;
+
+ if (de_off >= used || de_off >= le32_to_cpu(hdr->total))
+ return NULL;
+
+ esize = le16_to_cpu(e->size);
+ if (esize < sizeof(struct NTFS_DE) || de_off + esize > used)
+ return NULL;
+
+ return e;
+}
+
+static inline struct NTFS_DE *hdr_next_de(const struct INDEX_HDR *hdr,
+ const struct NTFS_DE *e)
+{
+ size_t off = PtrOffset(hdr, e);
+ u32 used = le32_to_cpu(hdr->used);
+ u16 esize;
+
+ if (off >= used)
+ return NULL;
+
+ esize = le16_to_cpu(e->size);
+
+ if (esize < sizeof(struct NTFS_DE) ||
+ off + esize + sizeof(struct NTFS_DE) > used)
+ return NULL;
+
+ return Add2Ptr(e, esize);
+}
+
+static inline bool hdr_has_subnode(const struct INDEX_HDR *hdr)
+{
+ return hdr->flags & 1;
+}
+
+struct INDEX_BUFFER {
+ struct NTFS_RECORD_HEADER rhdr; // 'INDX'
+ __le64 vbn; // 0x10: vcn if index >= cluster or vsn id index < cluster
+ struct INDEX_HDR ihdr; // 0x18:
+};
+
+static_assert(sizeof(struct INDEX_BUFFER) == 0x28);
+
+static inline bool ib_is_empty(const struct INDEX_BUFFER *ib)
+{
+ const struct NTFS_DE *first = hdr_first_de(&ib->ihdr);
+
+ return !first || de_is_last(first);
+}
+
+static inline bool ib_is_leaf(const struct INDEX_BUFFER *ib)
+{
+ return !(ib->ihdr.flags & 1);
+}
+
+/* Index root structure ( 0x90 ) */
+enum COLLATION_RULE {
+ NTFS_COLLATION_TYPE_BINARY = cpu_to_le32(0),
+ // $I30
+ NTFS_COLLATION_TYPE_FILENAME = cpu_to_le32(0x01),
+ // $SII of $Secure and $Q of Quota
+ NTFS_COLLATION_TYPE_UINT = cpu_to_le32(0x10),
+ // $O of Quota
+ NTFS_COLLATION_TYPE_SID = cpu_to_le32(0x11),
+ // $SDH of $Secure
+ NTFS_COLLATION_TYPE_SECURITY_HASH = cpu_to_le32(0x12),
+ // $O of ObjId and "$R" for Reparse
+ NTFS_COLLATION_TYPE_UINTS = cpu_to_le32(0x13)
+};
+
+static_assert(sizeof(enum COLLATION_RULE) == 4);
+
+//
+struct INDEX_ROOT {
+ enum ATTR_TYPE type; // 0x00: The type of attribute to index on
+ enum COLLATION_RULE rule; // 0x04: The rule
+ __le32 index_block_size;// 0x08: The size of index record
+ u8 index_block_clst; // 0x0C: The number of clusters or sectors per index
+ u8 res[3];
+ struct INDEX_HDR ihdr; // 0x10:
+};
+
+static_assert(sizeof(struct INDEX_ROOT) == 0x20);
+static_assert(offsetof(struct INDEX_ROOT, ihdr) == 0x10);
+
+#define VOLUME_FLAG_DIRTY cpu_to_le16(0x0001)
+#define VOLUME_FLAG_RESIZE_LOG_FILE cpu_to_le16(0x0002)
+
+struct VOLUME_INFO {
+ __le64 res1; // 0x00
+ u8 major_ver; // 0x08: NTFS major version number (before .)
+ u8 minor_ver; // 0x09: NTFS minor version number (after .)
+ __le16 flags; // 0x0A: Volume flags, see VOLUME_FLAG_XXX
+
+}; // sizeof=0xC
+
+#define SIZEOF_ATTRIBUTE_VOLUME_INFO 0xc
+
+#define NTFS_LABEL_MAX_LENGTH (0x100 / sizeof(short))
+#define NTFS_ATTR_INDEXABLE cpu_to_le32(0x00000002)
+#define NTFS_ATTR_DUPALLOWED cpu_to_le32(0x00000004)
+#define NTFS_ATTR_MUST_BE_INDEXED cpu_to_le32(0x00000010)
+#define NTFS_ATTR_MUST_BE_NAMED cpu_to_le32(0x00000020)
+#define NTFS_ATTR_MUST_BE_RESIDENT cpu_to_le32(0x00000040)
+#define NTFS_ATTR_LOG_ALWAYS cpu_to_le32(0x00000080)
+
+/* $AttrDef file entry */
+struct ATTR_DEF_ENTRY {
+ __le16 name[0x40]; // 0x00: Attr name
+ enum ATTR_TYPE type; // 0x80: struct ATTRIB type
+ __le32 res; // 0x84:
+ enum COLLATION_RULE rule; // 0x88:
+ __le32 flags; // 0x8C: NTFS_ATTR_XXX (see above)
+ __le64 min_sz; // 0x90: Minimum attribute data size
+ __le64 max_sz; // 0x98: Maximum attribute data size
+};
+
+static_assert(sizeof(struct ATTR_DEF_ENTRY) == 0xa0);
+
+/* Object ID (0x40) */
+struct OBJECT_ID {
+ struct GUID ObjId; // 0x00: Unique Id assigned to file
+ struct GUID BirthVolumeId;// 0x10: Birth Volume Id is the Object Id of the Volume on
+ // which the Object Id was allocated. It never changes
+ struct GUID BirthObjectId; // 0x20: Birth Object Id is the first Object Id that was
+ // ever assigned to this MFT Record. I.e. If the Object Id
+ // is changed for some reason, this field will reflect the
+ // original value of the Object Id.
+ struct GUID DomainId; // 0x30: Domain Id is currently unused but it is intended to be
+ // used in a network environment where the local machine is
+ // part of a Windows 2000 Domain. This may be used in a Windows
+ // 2000 Advanced Server managed domain.
+};
+
+static_assert(sizeof(struct OBJECT_ID) == 0x40);
+
+/* O Directory entry structure ( rule = 0x13 ) */
+struct NTFS_DE_O {
+ struct NTFS_DE de;
+ struct GUID ObjId; // 0x10: Unique Id assigned to file
+ struct MFT_REF ref; // 0x20: MFT record number with this file
+ struct GUID BirthVolumeId; // 0x28: Birth Volume Id is the Object Id of the Volume on
+ // which the Object Id was allocated. It never changes
+ struct GUID BirthObjectId; // 0x38: Birth Object Id is the first Object Id that was
+ // ever assigned to this MFT Record. I.e. If the Object Id
+ // is changed for some reason, this field will reflect the
+ // original value of the Object Id.
+ // This field is valid if data_size == 0x48
+ struct GUID BirthDomainId; // 0x48: Domain Id is currently unused but it is intended
+ // to be used in a network environment where the local
+ // machine is part of a Windows 2000 Domain. This may be
+ // used in a Windows 2000 Advanced Server managed domain.
+};
+
+static_assert(sizeof(struct NTFS_DE_O) == 0x58);
+
+#define NTFS_OBJECT_ENTRY_DATA_SIZE1 \
+ 0x38 // struct NTFS_DE_O.BirthDomainId is not used
+#define NTFS_OBJECT_ENTRY_DATA_SIZE2 \
+ 0x48 // struct NTFS_DE_O.BirthDomainId is used
+
+/* Q Directory entry structure ( rule = 0x11 ) */
+struct NTFS_DE_Q {
+ struct NTFS_DE de;
+ __le32 owner_id; // 0x10: Unique Id assigned to file
+ __le32 Version; // 0x14: 0x02
+ __le32 flags2; // 0x18: Quota flags, see above
+ __le64 BytesUsed; // 0x1C:
+ __le64 ChangeTime; // 0x24:
+ __le64 WarningLimit; // 0x28:
+ __le64 HardLimit; // 0x34:
+ __le64 ExceededTime; // 0x3C:
+
+ // SID is placed here
+}; // sizeof() = 0x44
+
+#define SIZEOF_NTFS_DE_Q 0x44
+
+#define SecurityDescriptorsBlockSize 0x40000 // 256K
+#define SecurityDescriptorMaxSize 0x20000 // 128K
+#define Log2OfSecurityDescriptorsBlockSize 18
+
+struct SECURITY_KEY {
+ __le32 hash; // Hash value for descriptor
+ __le32 sec_id; // Security Id (guaranteed unique)
+};
+
+/* Security descriptors (the content of $Secure::SDS data stream) */
+struct SECURITY_HDR {
+ struct SECURITY_KEY key; // 0x00: Security Key
+ __le64 off; // 0x08: Offset of this entry in the file
+ __le32 size; // 0x10: Size of this entry, 8 byte aligned
+ //
+ // Security descriptor itself is placed here
+ // Total size is 16 byte aligned
+ //
+} __packed;
+
+#define SIZEOF_SECURITY_HDR 0x14
+
+/* SII Directory entry structure */
+struct NTFS_DE_SII {
+ struct NTFS_DE de;
+ __le32 sec_id; // 0x10: Key: sizeof(security_id) = wKeySize
+ struct SECURITY_HDR sec_hdr; // 0x14:
+} __packed;
+
+#define SIZEOF_SII_DIRENTRY 0x28
+
+/* SDH Directory entry structure */
+struct NTFS_DE_SDH {
+ struct NTFS_DE de;
+ struct SECURITY_KEY key; // 0x10: Key
+ struct SECURITY_HDR sec_hdr; // 0x18: Data
+ __le16 magic[2]; // 0x2C: 0x00490049 "I I"
+};
+
+#define SIZEOF_SDH_DIRENTRY 0x30
+
+struct REPARSE_KEY {
+ __le32 ReparseTag; // 0x00: Reparse Tag
+ struct MFT_REF ref; // 0x04: MFT record number with this file
+}; // sizeof() = 0x0C
+
+static_assert(offsetof(struct REPARSE_KEY, ref) == 0x04);
+#define SIZEOF_REPARSE_KEY 0x0C
+
+/* Reparse Directory entry structure */
+struct NTFS_DE_R {
+ struct NTFS_DE de;
+ struct REPARSE_KEY key; // 0x10: Reparse Key
+ u32 zero; // 0x1c
+}; // sizeof() = 0x20
+
+static_assert(sizeof(struct NTFS_DE_R) == 0x20);
+
+/* CompressReparseBuffer.WofVersion */
+#define WOF_CURRENT_VERSION cpu_to_le32(1)
+/* CompressReparseBuffer.WofProvider */
+#define WOF_PROVIDER_WIM cpu_to_le32(1)
+/* CompressReparseBuffer.WofProvider */
+#define WOF_PROVIDER_SYSTEM cpu_to_le32(2)
+/* CompressReparseBuffer.ProviderVer */
+#define WOF_PROVIDER_CURRENT_VERSION cpu_to_le32(1)
+
+#define WOF_COMPRESSION_XPRESS4K cpu_to_le32(0) // 4k
+#define WOF_COMPRESSION_LZX32K cpu_to_le32(1) // 32k
+#define WOF_COMPRESSION_XPRESS8K cpu_to_le32(2) // 8k
+#define WOF_COMPRESSION_XPRESS16K cpu_to_le32(3) // 16k
+
+/*
+ * ATTR_REPARSE (0xC0)
+ *
+ * The reparse struct GUID structure is used by all 3rd party layered drivers to
+ * store data in a reparse point. For non-Microsoft tags, The struct GUID field
+ * cannot be GUID_NULL.
+ * The constraints on reparse tags are defined below.
+ * Microsoft tags can also be used with this format of the reparse point buffer.
+ */
+struct REPARSE_POINT {
+ __le32 ReparseTag; // 0x00:
+ __le16 ReparseDataLength;// 0x04:
+ __le16 Reserved;
+
+ struct GUID Guid; // 0x08:
+
+ //
+ // Here GenericReparseBuffer is placed
+ //
+};
+
+static_assert(sizeof(struct REPARSE_POINT) == 0x18);
+
+//
+// Maximum allowed size of the reparse data.
+//
+#define MAXIMUM_REPARSE_DATA_BUFFER_SIZE (16 * 1024)
+
+//
+// The value of the following constant needs to satisfy the following
+// conditions:
+// (1) Be at least as large as the largest of the reserved tags.
+// (2) Be strictly smaller than all the tags in use.
+//
+#define IO_REPARSE_TAG_RESERVED_RANGE 1
+
+//
+// The reparse tags are a ULONG. The 32 bits are laid out as follows:
+//
+// 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
+// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+// +-+-+-+-+-----------------------+-------------------------------+
+// |M|R|N|R| Reserved bits | Reparse Tag Value |
+// +-+-+-+-+-----------------------+-------------------------------+
+//
+// M is the Microsoft bit. When set to 1, it denotes a tag owned by Microsoft.
+// All ISVs must use a tag with a 0 in this position.
+// Note: If a Microsoft tag is used by non-Microsoft software, the
+// behavior is not defined.
+//
+// R is reserved. Must be zero for non-Microsoft tags.
+//
+// N is name surrogate. When set to 1, the file represents another named
+// entity in the system.
+//
+// The M and N bits are OR-able.
+// The following macros check for the M and N bit values:
+//
+
+//
+// Macro to determine whether a reparse point tag corresponds to a tag
+// owned by Microsoft.
+//
+#define IsReparseTagMicrosoft(_tag) (((_tag)&IO_REPARSE_TAG_MICROSOFT))
+
+//
+// Macro to determine whether a reparse point tag is a name surrogate
+//
+#define IsReparseTagNameSurrogate(_tag) (((_tag)&IO_REPARSE_TAG_NAME_SURROGATE))
+
+//
+// The following constant represents the bits that are valid to use in
+// reparse tags.
+//
+#define IO_REPARSE_TAG_VALID_VALUES 0xF000FFFF
+
+//
+// Macro to determine whether a reparse tag is a valid tag.
+//
+#define IsReparseTagValid(_tag) \
+ (!((_tag) & ~IO_REPARSE_TAG_VALID_VALUES) && \
+ ((_tag) > IO_REPARSE_TAG_RESERVED_RANGE))
+
+//
+// Microsoft tags for reparse points.
+//
+
+enum IO_REPARSE_TAG {
+ IO_REPARSE_TAG_SYMBOLIC_LINK = cpu_to_le32(0),
+ IO_REPARSE_TAG_NAME_SURROGATE = cpu_to_le32(0x20000000),
+ IO_REPARSE_TAG_MICROSOFT = cpu_to_le32(0x80000000),
+ IO_REPARSE_TAG_MOUNT_POINT = cpu_to_le32(0xA0000003),
+ IO_REPARSE_TAG_SYMLINK = cpu_to_le32(0xA000000C),
+ IO_REPARSE_TAG_HSM = cpu_to_le32(0xC0000004),
+ IO_REPARSE_TAG_SIS = cpu_to_le32(0x80000007),
+ IO_REPARSE_TAG_DEDUP = cpu_to_le32(0x80000013),
+ IO_REPARSE_TAG_COMPRESS = cpu_to_le32(0x80000017),
+
+ //
+ // The reparse tag 0x80000008 is reserved for Microsoft internal use
+ // (may be published in the future)
+ //
+
+ //
+ // Microsoft reparse tag reserved for DFS
+ //
+ IO_REPARSE_TAG_DFS = cpu_to_le32(0x8000000A),
+
+ //
+ // Microsoft reparse tag reserved for the file system filter manager
+ //
+ IO_REPARSE_TAG_FILTER_MANAGER = cpu_to_le32(0x8000000B),
+
+ //
+ // Non-Microsoft tags for reparse points
+ //
+
+ //
+ // Tag allocated to CONGRUENT, May 2000. Used by IFSTEST
+ //
+ IO_REPARSE_TAG_IFSTEST_CONGRUENT = cpu_to_le32(0x00000009),
+
+ //
+ // Tag allocated to ARKIVIO
+ //
+ IO_REPARSE_TAG_ARKIVIO = cpu_to_le32(0x0000000C),
+
+ //
+ // Tag allocated to SOLUTIONSOFT
+ //
+ IO_REPARSE_TAG_SOLUTIONSOFT = cpu_to_le32(0x2000000D),
+
+ //
+ // Tag allocated to COMMVAULT
+ //
+ IO_REPARSE_TAG_COMMVAULT = cpu_to_le32(0x0000000E),
+
+ // OneDrive??
+ IO_REPARSE_TAG_CLOUD = cpu_to_le32(0x9000001A),
+ IO_REPARSE_TAG_CLOUD_1 = cpu_to_le32(0x9000101A),
+ IO_REPARSE_TAG_CLOUD_2 = cpu_to_le32(0x9000201A),
+ IO_REPARSE_TAG_CLOUD_3 = cpu_to_le32(0x9000301A),
+ IO_REPARSE_TAG_CLOUD_4 = cpu_to_le32(0x9000401A),
+ IO_REPARSE_TAG_CLOUD_5 = cpu_to_le32(0x9000501A),
+ IO_REPARSE_TAG_CLOUD_6 = cpu_to_le32(0x9000601A),
+ IO_REPARSE_TAG_CLOUD_7 = cpu_to_le32(0x9000701A),
+ IO_REPARSE_TAG_CLOUD_8 = cpu_to_le32(0x9000801A),
+ IO_REPARSE_TAG_CLOUD_9 = cpu_to_le32(0x9000901A),
+ IO_REPARSE_TAG_CLOUD_A = cpu_to_le32(0x9000A01A),
+ IO_REPARSE_TAG_CLOUD_B = cpu_to_le32(0x9000B01A),
+ IO_REPARSE_TAG_CLOUD_C = cpu_to_le32(0x9000C01A),
+ IO_REPARSE_TAG_CLOUD_D = cpu_to_le32(0x9000D01A),
+ IO_REPARSE_TAG_CLOUD_E = cpu_to_le32(0x9000E01A),
+ IO_REPARSE_TAG_CLOUD_F = cpu_to_le32(0x9000F01A),
+
+};
+
+#define SYMLINK_FLAG_RELATIVE 1
+
+/* Microsoft reparse buffer. (see DDK for details) */
+struct REPARSE_DATA_BUFFER {
+ __le32 ReparseTag; // 0x00:
+ __le16 ReparseDataLength; // 0x04:
+ __le16 Reserved;
+
+ union {
+ // If ReparseTag == 0xA0000003 (IO_REPARSE_TAG_MOUNT_POINT)
+ struct {
+ __le16 SubstituteNameOffset; // 0x08
+ __le16 SubstituteNameLength; // 0x0A
+ __le16 PrintNameOffset; // 0x0C
+ __le16 PrintNameLength; // 0x0E
+ __le16 PathBuffer[]; // 0x10
+ } MountPointReparseBuffer;
+
+ // If ReparseTag == 0xA000000C (IO_REPARSE_TAG_SYMLINK)
+ // https://msdn.microsoft.com/en-us/library/cc232006.aspx
+ struct {
+ __le16 SubstituteNameOffset; // 0x08
+ __le16 SubstituteNameLength; // 0x0A
+ __le16 PrintNameOffset; // 0x0C
+ __le16 PrintNameLength; // 0x0E
+ // 0-absolute path 1- relative path, SYMLINK_FLAG_RELATIVE
+ __le32 Flags; // 0x10
+ __le16 PathBuffer[]; // 0x14
+ } SymbolicLinkReparseBuffer;
+
+ // If ReparseTag == 0x80000017U
+ struct {
+ __le32 WofVersion; // 0x08 == 1
+ /* 1 - WIM backing provider ("WIMBoot"),
+ * 2 - System compressed file provider
+ */
+ __le32 WofProvider; // 0x0C
+ __le32 ProviderVer; // 0x10: == 1 WOF_FILE_PROVIDER_CURRENT_VERSION == 1
+ __le32 CompressionFormat; // 0x14: 0, 1, 2, 3. See WOF_COMPRESSION_XXX
+ } CompressReparseBuffer;
+
+ struct {
+ u8 DataBuffer[1]; // 0x08
+ } GenericReparseBuffer;
+ };
+};
+
+/* ATTR_EA_INFO (0xD0) */
+
+#define FILE_NEED_EA 0x80 // See ntifs.h
+/* FILE_NEED_EA, indicates that the file to which the EA belongs cannot be
+ * interpreted without understanding the associated extended attributes.
+ */
+struct EA_INFO {
+ __le16 size_pack; // 0x00: Size of buffer to hold in packed form
+ __le16 count; // 0x02: Count of EA's with FILE_NEED_EA bit set
+ __le32 size; // 0x04: Size of buffer to hold in unpacked form
+};
+
+static_assert(sizeof(struct EA_INFO) == 8);
+
+/* ATTR_EA (0xE0) */
+struct EA_FULL {
+ __le32 size; // 0x00: (not in packed)
+ u8 flags; // 0x04
+ u8 name_len; // 0x05
+ __le16 elength; // 0x06
+ u8 name[]; // 0x08
+};
+
+static_assert(offsetof(struct EA_FULL, name) == 8);
+
+#define ACL_REVISION 2
+#define ACL_REVISION_DS 4
+
+#define SE_SELF_RELATIVE cpu_to_le16(0x8000)
+
+struct SECURITY_DESCRIPTOR_RELATIVE {
+ u8 Revision;
+ u8 Sbz1;
+ __le16 Control;
+ __le32 Owner;
+ __le32 Group;
+ __le32 Sacl;
+ __le32 Dacl;
+};
+static_assert(sizeof(struct SECURITY_DESCRIPTOR_RELATIVE) == 0x14);
+
+struct ACE_HEADER {
+ u8 AceType;
+ u8 AceFlags;
+ __le16 AceSize;
+};
+static_assert(sizeof(struct ACE_HEADER) == 4);
+
+struct ACL {
+ u8 AclRevision;
+ u8 Sbz1;
+ __le16 AclSize;
+ __le16 AceCount;
+ __le16 Sbz2;
+};
+static_assert(sizeof(struct ACL) == 8);
+
+struct SID {
+ u8 Revision;
+ u8 SubAuthorityCount;
+ u8 IdentifierAuthority[6];
+ __le32 SubAuthority[];
+};
+static_assert(offsetof(struct SID, SubAuthority) == 8);
+
+// clang-format on