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Message-ID: <0911041fee4649f5bbd76cca7cb225cc@paragon-software.com>
Date: Fri, 21 Aug 2020 16:24:57 +0000
From: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
To: "viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>
CC: Pali Rohár <pali@...nel.org>
Subject: [PATCH v2 01/10] fs/ntfs3: Add headers and misc files
This adds fs/ntfs3 headers and misc files
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
---
fs/ntfs3/debug.h | 77 +++
fs/ntfs3/ntfs.h | 1253 ++++++++++++++++++++++++++++++++++++++++++++
fs/ntfs3/ntfs_fs.h | 965 ++++++++++++++++++++++++++++++++++
fs/ntfs3/upcase.c | 78 +++
4 files changed, 2373 insertions(+)
create mode 100644 fs/ntfs3/debug.h
create mode 100644 fs/ntfs3/ntfs.h
create mode 100644 fs/ntfs3/ntfs_fs.h
create mode 100644 fs/ntfs3/upcase.c
diff --git a/fs/ntfs3/debug.h b/fs/ntfs3/debug.h
new file mode 100644
index 000000000000..ee348daeb7a9
--- /dev/null
+++ b/fs/ntfs3/debug.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/fs/ntfs3/debug.h
+ *
+ * Copyright (C) 2019-2020 Paragon Software GmbH, All rights reserved.
+ *
+ * useful functions for debuging
+ */
+
+#ifndef Add2Ptr
+#define Add2Ptr(P, I) (void *)((u8 *)(P) + (I))
+#define PtrOffset(B, O) ((size_t)((size_t)(O) - (size_t)(B)))
+#endif
+
+#define QuadAlign(n) (((n) + 7u) & (~7u))
+#define IsQuadAligned(n) (!((size_t)(n)&7u))
+#define Quad2Align(n) (((n) + 15u) & (~15u))
+#define IsQuad2Aligned(n) (!((size_t)(n)&15u))
+#define Quad4Align(n) (((n) + 31u) & (~31u))
+#define IsSizeTAligned(n) (!((size_t)(n) & (sizeof(size_t) - 1)))
+#define DwordAlign(n) (((n) + 3u) & (~3u))
+#define IsDwordAligned(n) (!((size_t)(n)&3u))
+#define WordAlign(n) (((n) + 1u) & (~1u))
+#define IsWordAligned(n) (!((size_t)(n)&1u))
+
+__printf(3, 4) void __ntfs_trace(const struct super_block *sb,
+ const char *level, const char *fmt, ...);
+__printf(3, 4) void __ntfs_fs_error(struct super_block *sb, int report,
+ const char *fmt, ...);
+__printf(3, 4) void __ntfs_inode_trace(struct inode *inode, const char *level,
+ const char *fmt, ...);
+
+#define ntfs_trace(sb, fmt, args...) __ntfs_trace(sb, KERN_NOTICE, fmt, ##args)
+#define ntfs_error(sb, fmt, args...) __ntfs_trace(sb, KERN_ERR, fmt, ##args)
+#define ntfs_warning(sb, fmt, args...) \
+ __ntfs_trace(sb, KERN_WARNING, fmt, ##args)
+
+#define ntfs_fs_error(sb, fmt, args...) __ntfs_fs_error(sb, 1, fmt, ##args)
+#define ntfs_inode_error(inode, fmt, args...) \
+ __ntfs_inode_trace(inode, KERN_ERR, fmt, ##args)
+#define ntfs_inode_warning(inode, fmt, args...) \
+ __ntfs_inode_trace(inode, KERN_WARNING, fmt, ##args)
+
+static inline void *ntfs_alloc(size_t size, int zero)
+{
+ void *p = kmalloc(size, zero ? (GFP_NOFS | __GFP_ZERO) : GFP_NOFS);
+
+ return p;
+}
+
+static inline void ntfs_free(void *p)
+{
+ if (!p)
+ return;
+ kfree(p);
+}
+
+static inline void trace_mem_report(int on_exit)
+{
+}
+
+static inline void ntfs_init_trace_file(void)
+{
+}
+
+static inline void ntfs_close_trace_file(void)
+{
+}
+
+static inline void *ntfs_memdup(const void *src, size_t len)
+{
+ void *p = ntfs_alloc(len, 0);
+
+ if (p)
+ memcpy(p, src, len);
+ return p;
+}
diff --git a/fs/ntfs3/ntfs.h b/fs/ntfs3/ntfs.h
new file mode 100644
index 000000000000..b9735129f45b
--- /dev/null
+++ b/fs/ntfs3/ntfs.h
@@ -0,0 +1,1253 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/fs/ntfs3/ntfs.h
+ *
+ * Copyright (C) 2019-2020 Paragon Software GmbH, All rights reserved.
+ *
+ * on-disk ntfs structs
+ */
+
+/* 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
+
+/*
+ * Activate this define to activate preallocate
+ */
+//#define NTFS3_PREALLOCATE
+
+#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 NTFS3_64BIT_CLUSTER
+
+#define NTFS_LZNT_MAX_CLUSTER 4096
+#define NTFS_LZNT_CUNIT 4
+
+#ifndef GUID_DEFINED
+#define GUID_DEFINED
+typedef struct {
+ __le32 Data1;
+ __le16 Data2;
+ __le16 Data3;
+ u8 Data4[8];
+} GUID;
+#endif
+
+struct le_str {
+ u8 len;
+ u8 unused;
+ __le16 name[20];
+};
+
+struct cpu_str {
+ u8 len;
+ u8 unused;
+ u16 name[20];
+};
+
+static_assert(SECTOR_SHIFT == 9);
+
+#ifdef NTFS3_64BIT_CLUSTER
+typedef u64 CLST;
+static_assert(sizeof(size_t) == 8);
+#else
+typedef u32 CLST;
+#endif
+
+#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,
+};
+
+typedef enum {
+ 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)
+} ATTR_TYPE;
+
+static_assert(sizeof(ATTR_TYPE) == 4);
+
+typedef enum {
+ 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),
+} FILE_ATTRIBUTE;
+
+static_assert(sizeof(FILE_ATTRIBUTE) == 4);
+
+extern const struct cpu_str NAME_MFT; // L"$MFT"
+extern const struct cpu_str NAME_MIRROR; // L"$MFTMirr"
+extern const struct cpu_str NAME_LOGFILE; // L"$LogFile"
+extern const struct cpu_str NAME_VOLUME; // L"$Volume"
+extern const struct cpu_str NAME_ATTRDEF; // L"$AttrDef"
+extern const struct cpu_str NAME_ROOT; // L"."
+extern const struct cpu_str NAME_BITMAP; // L"$Bitmap"
+extern const struct cpu_str NAME_BOOT; // L"$Boot"
+extern const struct cpu_str NAME_BADCLUS; // L"$BadClus"
+extern const struct cpu_str NAME_QUOTA; // L"$Quota"
+extern const struct cpu_str NAME_SECURE; // L"$Secure"
+extern const struct cpu_str NAME_UPCASE; // L"$UpCase"
+extern const struct cpu_str NAME_EXTEND; // L"$Extend"
+extern const struct cpu_str NAME_OBJID; // L"$ObjId"
+extern const struct cpu_str NAME_REPARSE; // L"$Reparse"
+extern const struct cpu_str NAME_USNJRNL; // L"$UsnJrnl"
+extern const struct cpu_str NAME_UGM; // L"$UGM"
+
+extern const __le16 I30_NAME[4]; // L"$I30"
+extern const __le16 SII_NAME[4]; // L"$SII"
+extern const __le16 SDH_NAME[4]; // L"$SDH"
+extern const __le16 SO_NAME[2]; // L"$O"
+extern const __le16 SQ_NAME[2]; // L"$Q"
+extern const __le16 SR_NAME[2]; // L"$R"
+
+extern const __le16 BAD_NAME[4]; // L"$Bad"
+extern const __le16 SDS_NAME[4]; // L"$SDS"
+extern const __le16 EFS_NAME[4]; // L"$EFS"
+extern const __le16 WOF_NAME[17]; // L"WofCompressedData"
+extern const __le16 J_NAME[2]; // L"$J"
+extern const __le16 MAX_NAME[4]; // L"$Max"
+
+/* MFT record number structure */
+typedef struct {
+ __le32 low; // The low part of the number
+ __le16 high; // The high part of the number
+ __le16 seq; // The sequence number of MFT record
+} MFT_REF;
+
+static_assert(sizeof(__le64) == sizeof(MFT_REF));
+
+static inline CLST ino_get(const MFT_REF *ref)
+{
+#ifdef 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 secotrs_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);
+
+typedef enum {
+ 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),
+} NTFS_SIGNATURE;
+
+static_assert(sizeof(NTFS_SIGNATURE) == 4);
+
+/* MFT Record header structure */
+typedef struct {
+ /* Record magic number, equals 'FILE'/'INDX'/'RSTR'/'RCRD' */
+ __le32 sign; // 0x00:
+ __le16 fix_off; // 0x04:
+ __le16 fix_num; // 0x06:
+ __le64 lsn; // 0x08: Log file sequence number
+} NTFS_RECORD_HEADER;
+
+static_assert(sizeof(NTFS_RECORD_HEADER) == 0x10);
+
+static inline int is_baad(const NTFS_RECORD_HEADER *hdr)
+{
+ return hdr->sign == NTFS_BAAD_SIGNATURE;
+}
+
+/* Possible bits in MFT_REC.flags */
+typedef enum {
+ 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),
+} RECORD_FLAG;
+
+/* MFT Record structure */
+typedef 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: 1=non-resident, 2=dir. See RECORD_FLAG_XXX
+ __le32 used; // 0x18: The size of used part
+ __le32 total; // 0x1C: Total record size
+
+ MFT_REF parent_ref; // 0x20: Parent MFT record
+ __le16 next_attr_id; // 0x28: The next attribute Id
+
+ //
+ // NTFS of version 3.1 uses this record header
+ // if fix_off >= 0x30
+
+ __le16 Res; // 0x2A: ? High part of MftRecord
+ __le32 MftRecord; // 0x2C: Current record number
+ __le16 Fixups[1]; // 0x30:
+
+} MFT_REC;
+
+#define MFTRECORD_FIXUP_OFFSET_1 offsetof(MFT_REC, Res)
+#define MFTRECORD_FIXUP_OFFSET_3 offsetof(MFT_REC, Fixups)
+
+static_assert(MFTRECORD_FIXUP_OFFSET_1 == 0x2A);
+static_assert(MFTRECORD_FIXUP_OFFSET_3 == 0x30);
+
+static inline bool is_rec_base(const MFT_REC *rec)
+{
+ const MFT_REF *r = &rec->parent_ref;
+
+ return !r->low && !r->high && !r->seq;
+}
+
+static inline bool is_mft_rec5(const MFT_REC *rec)
+{
+ return le16_to_cpu(rec->rhdr.fix_off) >= offsetof(MFT_REC, Fixups);
+}
+
+static inline bool is_rec_inuse(const MFT_REC *rec)
+{
+ return rec->flags & RECORD_FLAG_IN_USE;
+}
+
+static inline bool clear_rec_inuse(MFT_REC *rec)
+{
+ return rec->flags &= ~RECORD_FLAG_IN_USE;
+}
+
+/* Possible values of ATTR_RESIDENT.flags */
+#define RESIDENT_FLAG_INDEXED 0x01
+
+typedef struct {
+ __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:
+} ATTR_RESIDENT; // sizeof() = 0x18
+
+typedef struct {
+ __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)
+
+} ATTR_NONRESIDENT; // 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)
+
+typedef struct {
+ 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 {
+ ATTR_RESIDENT res; // 0x10
+ ATTR_NONRESIDENT nres; // 0x10
+ };
+} ATTRIB;
+
+/* 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 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 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 ATTRIB *attr)
+{
+ return attr->flags & ATTR_FLAG_ENCRYPTED;
+}
+
+static inline bool is_attr_sparsed(const ATTRIB *attr)
+{
+ return attr->flags & ATTR_FLAG_SPARSED;
+}
+
+static inline bool is_attr_compressed(const ATTRIB *attr)
+{
+ return attr->flags & ATTR_FLAG_COMPRESSED;
+}
+
+static inline bool is_attr_ext(const ATTRIB *attr)
+{
+ return attr->flags & (ATTR_FLAG_SPARSED | ATTR_FLAG_COMPRESSED);
+}
+
+static inline bool is_attr_indexed(const ATTRIB *attr)
+{
+ return !attr->non_res && (attr->res.flags & RESIDENT_FLAG_INDEXED);
+}
+
+static inline const __le16 *attr_name(const ATTRIB *attr)
+{
+ return Add2Ptr(attr, le16_to_cpu(attr->name_off));
+}
+
+static inline u64 attr_svcn(const 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(ATTRIB) == 0x48);
+static_assert(sizeof(((ATTRIB *)NULL)->res) == 0x08);
+static_assert(sizeof(((ATTRIB *)NULL)->nres) == 0x38);
+
+static inline void *resident_data_ex(const 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 ATTRIB *attr)
+{
+ return Add2Ptr(attr, le16_to_cpu(attr->res.data_off));
+}
+
+static inline void *attr_run(const ATTRIB *attr)
+{
+ return Add2Ptr(attr, le16_to_cpu(attr->nres.run_off));
+}
+
+/* Standard information attribute (0x10) */
+typedef struct {
+ __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
+ 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
+} ATTR_STD_INFO;
+
+static_assert(sizeof(ATTR_STD_INFO) == 0x30);
+
+#define SECURITY_ID_INVALID 0x00000000
+#define SECURITY_ID_FIRST 0x00000100
+
+typedef struct {
+ __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
+ 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. This Id is a key
+ // in the $O and $Q Indexes of the file $Quota. If zero, then
+ // quotas are disabled
+ __le32 security_id; // 0x34: The Security Id is a key in the $SII Index and $SDS
+ // Data Stream in the file $Secure.
+ __le64 quota_charge; // 0x38: The number of bytes this file user from the user's
+ // quota. This should be the total data size of all streams.
+ // If zero, then quotas are disabled.
+ __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.
+} ATTR_STD_INFO5;
+
+static_assert(sizeof(ATTR_STD_INFO5) == 0x48);
+
+/* attribute list entry structure (0x20) */
+typedef struct {
+ 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
+ MFT_REF ref; // 0x10: MFT record number with attribute
+ __le16 id; // 0x18: ATTRIB ID
+ __le16 name[3]; // 0x1A: Just to align. To get real name can use bNameOffset
+
+} ATTR_LIST_ENTRY; // sizeof(0x20)
+
+static_assert(sizeof(ATTR_LIST_ENTRY) == 0x20);
+
+static inline u32 le_size(u8 name_len)
+{
+ return QuadAlign(offsetof(ATTR_LIST_ENTRY, name) +
+ name_len * sizeof(short));
+}
+
+/* returns 0 if 'attr' has the same type and name */
+static inline int le_cmp(const ATTR_LIST_ENTRY *le, const 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 const __le16 *le_name(const ATTR_LIST_ENTRY *le)
+{
+ return Add2Ptr(le, le->name_off);
+}
+
+/* File name types (the field type in 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) */
+typedef struct {
+ __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
+ FILE_ATTRIBUTE fa; // 0x30: Standard DOS attributes & more
+ __le16 ea_size; // 0x34: Packed EAs
+ __le16 reparse; // 0x36: Used by Reparse
+
+} NTFS_DUP_INFO; // 0x38
+
+typedef struct {
+ MFT_REF home; // 0x00: MFT record for directory
+ NTFS_DUP_INFO dup; // 0x08
+ u8 name_len; // 0x40: File name length in words
+ u8 type; // 0x41: File name type
+ __le16 name[1]; // 0x42: File name
+} ATTR_FILE_NAME;
+
+static_assert(sizeof(((ATTR_FILE_NAME *)NULL)->dup) == 0x38);
+static_assert(offsetof(ATTR_FILE_NAME, name) == 0x42);
+#define SIZEOF_ATTRIBUTE_FILENAME 0x44
+#define SIZEOF_ATTRIBUTE_FILENAME_MAX (0x42 + 255 * 2)
+
+static inline ATTRIB *attr_from_name(ATTR_FILE_NAME *fname)
+{
+ return (ATTRIB *)((char *)fname - SIZEOF_RESIDENT);
+}
+
+static inline u16 fname_full_size(const ATTR_FILE_NAME *fname)
+{
+ return offsetof(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 */
+typedef struct {
+ union {
+ 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, 1=subnodes, 2=last
+ __le16 Reserved; // 0x0E:
+
+ // Here any indexed attribute can be placed
+ // One of them is:
+ // 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;
+
+} NTFS_DE;
+
+static_assert(sizeof(NTFS_DE) == 0x10);
+
+static inline void de_set_vbn_le(NTFS_DE *e, __le64 vcn)
+{
+ __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
+
+ *v = vcn;
+}
+
+static inline void de_set_vbn(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 NTFS_DE *e)
+{
+ return *(__le64 *)Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
+}
+
+static inline CLST de_get_vbn(const NTFS_DE *e)
+{
+ __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64));
+
+ return le64_to_cpu(*v);
+}
+
+static inline NTFS_DE *de_get_next(const NTFS_DE *e)
+{
+ return Add2Ptr(e, le16_to_cpu(e->size));
+}
+
+static inline ATTR_FILE_NAME *de_get_fname(const NTFS_DE *e)
+{
+ return le16_to_cpu(e->key_size) >= SIZEOF_ATTRIBUTE_FILENAME ?
+ Add2Ptr(e, sizeof(NTFS_DE)) :
+ NULL;
+}
+
+static inline bool de_is_last(const NTFS_DE *e)
+{
+ return e->flags & NTFS_IE_LAST;
+}
+
+static inline bool de_has_vcn(const NTFS_DE *e)
+{
+ return e->flags & NTFS_IE_HAS_SUBNODES;
+}
+
+static inline bool de_has_vcn_ex(const 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(NTFS_DE) + offsetof(ATTR_FILE_NAME, name) + \
+ NTFS_NAME_LEN * sizeof(short))
+
+typedef struct {
+ // The offset from the start of this structure to the first NtfsDirEntry
+ __le32 de_off; // 0x00:
+ // The size of this structure plus all entries (quad-word aligned)
+ __le32 used; // 0x04
+ // The allocated size of for this structure plus all entries
+ __le32 total; // 0x08:
+ // 0x00 = Small directory, 0x01 = Large directory
+ u8 flags; // 0x0C
+ u8 res[3];
+
+ //
+ // de_off + used <= total
+ //
+
+} INDEX_HDR;
+
+static_assert(sizeof(INDEX_HDR) == 0x10);
+
+static inline NTFS_DE *hdr_first_de(const INDEX_HDR *hdr)
+{
+ u32 de_off = le32_to_cpu(hdr->de_off);
+ u32 used = le32_to_cpu(hdr->used);
+ 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(NTFS_DE) || de_off + esize > used)
+ return NULL;
+
+ return e;
+}
+
+static inline NTFS_DE *hdr_next_de(const INDEX_HDR *hdr, const 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(NTFS_DE) || off + esize + sizeof(NTFS_DE) > used)
+ return NULL;
+
+ return Add2Ptr(e, esize);
+}
+
+static inline bool hdr_has_subnode(const INDEX_HDR *hdr)
+{
+ return hdr->flags & 1;
+}
+
+typedef struct {
+ NTFS_RECORD_HEADER rhdr; // 'INDX'
+ __le64 vbn; // 0x10: vcn if index >= cluster or vsn id index < cluster
+ INDEX_HDR ihdr; // 0x18:
+
+} INDEX_BUFFER;
+
+static_assert(sizeof(INDEX_BUFFER) == 0x28);
+
+static inline bool ib_is_empty(const INDEX_BUFFER *ib)
+{
+ const NTFS_DE *first = hdr_first_de(&ib->ihdr);
+
+ return !first || de_is_last(first);
+}
+
+static inline bool ib_is_leaf(const INDEX_BUFFER *ib)
+{
+ return !(ib->ihdr.flags & 1);
+}
+
+/* Index root structure ( 0x90 ) */
+typedef enum {
+ NTFS_COLLATION_TYPE_BINARY = cpu_to_le32(0),
+ NTFS_COLLATION_TYPE_FILENAME = cpu_to_le32(0x01),
+ // $SII of $Secure / $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)
+} COLLATION_RULE;
+
+static_assert(sizeof(COLLATION_RULE) == 4);
+
+//
+typedef struct {
+ ATTR_TYPE type; // 0x00: The type of attribute to index on
+ 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 per index
+ u8 res[3];
+ INDEX_HDR ihdr; // 0x10:
+
+} INDEX_ROOT;
+
+static_assert(sizeof(INDEX_ROOT) == 0x20);
+static_assert(offsetof(INDEX_ROOT, ihdr) == 0x10);
+
+#define VOLUME_FLAG_DIRTY cpu_to_le16(0x0001)
+#define VOLUME_FLAG_RESIZE_LOG_FILE cpu_to_le16(0x0002)
+
+typedef struct {
+ __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
+
+} VOLUME_INFO; // 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 */
+typedef struct {
+ __le16 name[0x40]; // 0x00: Attr name
+ ATTR_TYPE type; // 0x80: ATTRIB type
+ __le32 res; // 0x84:
+ 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
+} ATTR_DEF_ENTRY;
+
+static_assert(sizeof(ATTR_DEF_ENTRY) == 0xa0);
+
+/* Object ID (0x40) */
+typedef struct {
+ GUID ObjId; // 0x00: Unique Id assigned to file
+ GUID BirthVolumeId; // 0x10: Birth Volume Id is the Object Id of the Volume on
+ // which the Object Id was allocated. It never changes
+ 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.
+ 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.
+} OBJECT_ID;
+
+static_assert(sizeof(OBJECT_ID) == 0x40);
+
+/* O Directory entry structure ( rule = 0x13 ) */
+typedef struct {
+ NTFS_DE de;
+ // See OBJECT_ID (0x40) for details
+ GUID ObjId; // 0x10: Unique Id assigned to file
+ MFT_REF ref; // 0x20: MFT record number with this file
+ GUID BirthVolumeId; // 0x28: Birth Volume Id is the Object Id of the Volume on
+ // which the Object Id was allocated. It never changes
+ 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
+ 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.
+
+ // The last 8 bytes of this structure contains
+ // the VCN of subnode
+ // !!! Note !!!
+ // This field is presented only if (flags & 0x1)
+ // __le64 SubnodesVCN;
+} NTFS_DE_O;
+
+static_assert(sizeof(NTFS_DE_O) == 0x58);
+
+#define NTFS_OBJECT_ENTRY_DATA_SIZE1 0x38 // NTFS_DE_O.BirthDomainId is not used
+#define NTFS_OBJECT_ENTRY_DATA_SIZE2 0x48 // NTFS_DE_O.BirthDomainId is used
+
+/* Q Directory entry structure ( rule = 0x11 ) */
+typedef 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
+
+ // The last 8 bytes of this structure contains
+ // the VCN of subnode
+ // !!! Note !!!
+ // This field is presented only if (flags & 0x1)
+ // __le64 SubnodesVCN;
+
+} NTFS_DE_Q; // __attribute__ ((packed)); // sizeof() = 0x44
+
+#define SIZEOF_NTFS_DE_Q 0x44
+
+#define SecurityDescriptorsBlockSize 0x40000 // 256K
+#define SecurityDescriptorMaxSize 0x20000 // 128K
+#define Log2OfSecurityDescriptorsBlockSize 18
+
+typedef struct {
+ __le32 hash; // Hash value for descriptor
+ __le32 sec_id; // Security Id (guaranteed unique)
+} SECURITY_KEY;
+
+/* Security descriptors (the content of $Secure::SDS data stream) */
+typedef 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 SECURITY_HDR;
+
+#define SIZEOF_SECURITY_HDR 0x14
+
+/* SII Directory entry structure */
+typedef struct {
+ NTFS_DE de;
+ __le32 sec_id; // 0x10: Key: sizeof(security_id) = wKeySize
+ SECURITY_HDR sec_hdr; // 0x14:
+
+} __packed NTFS_DE_SII;
+
+#define SIZEOF_SII_DIRENTRY 0x28
+
+/* SDH Directory entry structure */
+typedef struct {
+ NTFS_DE de;
+ SECURITY_KEY key; // 0x10: Key
+ SECURITY_HDR sec_hdr; // 0x18: Data
+ __le16 magic[2]; // 0x2C: 0x00490049 "I I"
+
+} NTFS_DE_SDH; // __attribute__ ((packed));
+
+#define SIZEOF_SDH_DIRENTRY 0x30
+
+typedef struct {
+ __le32 ReparseTag; // 0x00: Reparse Tag
+ MFT_REF ref; // 0x04: MFT record number with this file
+
+} REPARSE_KEY; // sizeof() = 0x0C
+
+static_assert(offsetof(REPARSE_KEY, ref) == 0x04);
+#define SIZEOF_REPARSE_KEY 0x0C
+
+/* Reparse Directory entry structure */
+typedef struct {
+ NTFS_DE de;
+ REPARSE_KEY Key; // 0x10: Reparse Key (Tag + MFT_REF)
+
+ // The last 8 bytes of this structure contains
+ // the VCN of subnode
+ // !!! Note !!!
+ // This field is presented only if (flags & 0x1)
+ // __le64 SubnodesVCN;
+
+} NTFS_DE_R; // sizeof() = 0x1C
+
+#define SIZEOF_R_DIRENTRY 0x1C
+
+/* 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 0 // 4k
+#define WOF_COMPRESSION_LZX 1 // 32k
+#define WOF_COMPRESSION_XPRESS8K 2 // 8k
+#define WOF_COMPRESSION_XPRESS16K 3 // 16k
+
+/*
+ * ATTR_REPARSE (0xC0)
+ *
+ * The reparse GUID structure is used by all 3rd party layered drivers to
+ * store data in a reparse point. For non-Microsoft tags, The 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.
+ */
+typedef struct {
+ __le32 ReparseTag; // 0x00:
+ __le16 ReparseDataLength; // 0x04:
+ __le16 Reserved;
+
+ GUID Guid; // 0x08:
+
+ //
+ // Here GenericReparseBuffer is placed
+ //
+} REPARSE_POINT;
+
+static_assert(sizeof(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.
+//
+
+typedef enum {
+ 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),
+
+} NTFS_IO_REPARSE_TAG;
+
+static_assert(sizeof(NTFS_IO_REPARSE_TAG) == 4);
+
+/* Microsoft reparse buffer. (see DDK for details) */
+typedef struct {
+ __le32 ReparseTag; // 0x00:
+ __le16 ReparseDataLength; // 0x04:
+ __le16 Reserved;
+
+ union {
+ // If ReparseTag == 0
+ struct {
+ __le16 SubstituteNameOffset; // 0x08
+ __le16 SubstituteNameLength; // 0x0A
+ __le16 PrintNameOffset; // 0x0C
+ __le16 PrintNameLength; // 0x0E
+ __le16 PathBuffer[1]; // 0x10
+ } SymbolicLinkReparseBuffer;
+
+ // If ReparseTag == 0xA0000003U
+ struct {
+ __le16 SubstituteNameOffset; // 0x08
+ __le16 SubstituteNameLength; // 0x0A
+ __le16 PrintNameOffset; // 0x0C
+ __le16 PrintNameLength; // 0x0E
+ __le16 PathBuffer[1]; // 0x10
+ } MountPointReparseBuffer;
+
+ // If ReparseTag == IO_REPARSE_TAG_SYMLINK2 (0xA000000CU)
+ // 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
+ __le32 Flags; // 0x10
+ __le16 PathBuffer[1]; // 0x14
+ } SymbolicLink2ReparseBuffer;
+
+ // 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;
+ };
+
+} REPARSE_DATA_BUFFER;
+
+static inline u32 ntfs_reparse_bytes(u32 uni_len)
+{
+ return sizeof(short) * (2 * uni_len + 4) +
+ offsetof(REPARSE_DATA_BUFFER,
+ SymbolicLink2ReparseBuffer.PathBuffer);
+}
+
+/* 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.
+ */
+typedef struct {
+ __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
+} EA_INFO;
+
+static_assert(sizeof(EA_INFO) == 8);
+
+/* ATTR_EA (0xE0) */
+typedef struct {
+ __le32 size; // 0x00: (not in packed)
+ u8 flags; // 0x04
+ u8 name_len; // 0x05
+ __le16 elength; // 0x06
+ u8 name[1]; // 0x08
+
+} EA_FULL;
+
+static_assert(offsetof(EA_FULL, name) == 8);
+
+#define MAX_EA_DATA_SIZE (256 * 1024)
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
new file mode 100644
index 000000000000..0024fcad3b89
--- /dev/null
+++ b/fs/ntfs3/ntfs_fs.h
@@ -0,0 +1,965 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/fs/ntfs3/ntfs_fs.h
+ *
+ * Copyright (C) 2019-2020 Paragon Software GmbH, All rights reserved.
+ *
+ */
+
+/* "true" when [s,s+c) intersects with [l,l+w) */
+#define IS_IN_RANGE(s, c, l, w) \
+ (((c) > 0 && (w) > 0) && \
+ (((l) <= (s) && (s) < ((l) + (w))) || \
+ ((s) <= (l) && ((s) + (c)) >= ((l) + (w))) || \
+ ((l) < ((s) + (c)) && ((s) + (c)) < ((l) + (w)))))
+
+/* "true" when [s,se) intersects with [l,le) */
+#define IS_IN_RANGE2(s, se, l, le) \
+ (((se) > (s) && (le) > (l)) && \
+ (((l) <= (s) && (s) < (le)) || ((s) <= (l) && (se) >= (le)) || \
+ ((l) < (se) && (se) < (le))))
+
+#define MINUS_ONE_T ((size_t)(-1))
+/* Biggest MFT / smallest cluster */
+#define MAXIMUM_BYTES_PER_MFT 4096 // ??
+#define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512)
+
+#define MAXIMUM_BYTES_PER_INDEX 4096 // ??
+#define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512)
+
+typedef struct ntfs_inode ntfs_inode;
+typedef struct ntfs_sb_info ntfs_sb_info;
+struct lznt;
+
+struct mount_options {
+ kuid_t fs_uid;
+ kgid_t fs_gid;
+ u16 fs_fmask;
+ u16 fs_dmask;
+ unsigned quiet : 1, /* set = fake successful chmods and chowns */
+ sys_immutable : 1, /* set = system files are immutable */
+ discard : 1, /* Issue discard requests on deletions */
+ uid : 1, /* uid was set */
+ gid : 1, /* gid was set */
+ fmask : 1, /* fmask was set */
+ dmask : 1, /*dmask was set*/
+ sparse : 1, /*create sparse files*/
+ showmeta : 1, /*show meta files*/
+ nohidden : 1, /*do not shot hidden files*/
+ acl : 1, /*create acl*/
+ force : 1, /*rw mount dirty volume*/
+ no_acs_rules : 1 /*exclude acs rules*/
+ ;
+};
+
+struct ntfs_run;
+
+/* TODO: use rb tree instead of array */
+struct runs_tree {
+ struct ntfs_run *runs_;
+ size_t count; // Currently used size a ntfs_run storage.
+ size_t allocated; // Currently allocated ntfs_run storage size.
+};
+
+struct ntfs_buffers {
+ /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */
+ /* Biggest index / smallest cluster = 4096 / 512 = 8 */
+ struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT];
+ u32 bytes;
+ u32 nbufs;
+ u32 off;
+};
+
+#define NTFS_FLAGS_NODISCARD 0x00000001
+#define NTFS_FLAGS_NEED_REPLAY 0x04000000
+
+enum ALLOCATE_OPT {
+ ALLOCATE_DEF = 0, // Allocate all clusters
+ ALLOCATE_MFT = 1, // Allocate for MFT
+};
+
+enum bitmap_mutex_classes {
+ BITMAP_MUTEX_CLUSTERS = 0,
+ BITMAP_MUTEX_MFT = 1,
+};
+
+typedef struct {
+ struct super_block *sb;
+ struct rw_semaphore rw_lock;
+
+ struct runs_tree run;
+ size_t nbits;
+
+ u16 free_holder[8]; // holder for free_bits
+
+ size_t total_zeroes; // total number of free bits
+ u16 *free_bits; // free bits in each window
+ size_t nwnd;
+ u32 bits_last; // bits in last window
+
+ struct rb_root start_tree; // extents, sorted by 'start'
+ struct rb_root count_tree; // extents, sorted by 'count + start'
+ size_t count; // extents count
+ int uptodated; // -1 Tree is activated but not updated (too many fragments)
+ // 0 - Tree is not activated
+ // 1 - Tree is activated and updated
+ size_t extent_min; // Minimal extent used while building
+ size_t extent_max; // Upper estimate of biggest free block
+
+ bool set_tail; // not necessary in driver
+ bool inited;
+
+ /* Zone [bit, end) */
+ size_t zone_bit;
+ size_t zone_end;
+
+} wnd_bitmap;
+
+typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2,
+ size_t len2, const void *param);
+
+enum index_mutex_classed {
+ INDEX_MUTEX_I30 = 0,
+ INDEX_MUTEX_SII = 1,
+ INDEX_MUTEX_SDH = 2,
+ INDEX_MUTEX_SO = 3,
+ INDEX_MUTEX_SQ = 4,
+ INDEX_MUTEX_SR = 5,
+ INDEX_MUTEX_TOTAL
+};
+
+/* This struct works with indexes */
+typedef struct {
+ struct runs_tree bitmap_run;
+ struct runs_tree alloc_run;
+
+ /*TODO: remove 'cmp'*/
+ NTFS_CMP_FUNC cmp;
+
+ u8 index_bits; // log2(root->index_block_size)
+ u8 idx2vbn_bits; // log2(root->index_block_clst)
+ u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits
+ u8 changed; // set when tree is changed
+ u8 type; // index_mutex_classed
+
+} ntfs_index;
+
+/* Set when $LogFile is replaying */
+#define NTFS_FLAGS_LOG_REPLAING 0x00000008
+
+/* Set when we changed first MFT's which copy must be updated in $MftMirr */
+#define NTFS_FLAGS_MFTMIRR 0x00001000
+
+/* Minimum mft zone */
+#define NTFS_MIN_MFT_ZONE 100
+
+struct COMPRESS_CTX {
+ u64 chunk_num; // Number of chunk cmpr_buffer/unc_buffer
+ u64 first_chunk, last_chunk, total_chunks;
+ u64 chunk0_off;
+ void *ctx;
+ u8 *cmpr_buffer;
+ u8 *unc_buffer;
+ void *chunk_off_mem;
+ size_t chunk_off;
+ u32 *chunk_off32; // pointer inside ChunkOffsetsMem
+ u64 *chunk_off64; // pointer inside ChunkOffsetsMem
+ u32 compress_format;
+ u32 offset_bits;
+ u32 chunk_bits;
+ u32 chunk_size;
+};
+
+/* ntfs file system in-core superblock data */
+typedef struct ntfs_sb_info {
+ struct super_block *sb;
+
+ u32 discard_granularity;
+ u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1)
+
+ u32 cluster_size; // bytes per cluster
+ u32 cluster_mask; // == cluster_size - 1
+ u64 cluster_mask_inv; // ~(cluster_size - 1)
+ u32 block_mask; // sb->s_blocksize - 1
+ u32 blocks_per_cluster; // cluster_size / sb->s_blocksize
+
+ u32 record_size;
+ u32 sector_size;
+ u32 index_size;
+
+ u8 sector_bits;
+ u8 cluster_bits;
+ u8 record_bits;
+
+ u64 maxbytes; // Maximum size for normal files
+ u64 maxbytes_sparse; // Maximum size for sparse file
+
+ u32 flags; // See NTFS_FLAGS_XXX
+
+ CLST bad_clusters; // The count of marked bad clusters
+
+ u16 max_bytes_per_attr; // maximum attribute size in record
+ u16 attr_size_tr; // attribute size threshold (320 bytes)
+
+ /* Records in $Extend */
+ CLST objid_no;
+ CLST quota_no;
+ CLST reparse_no;
+ CLST usn_jrnl_no;
+
+ ATTR_DEF_ENTRY *def_table; // attribute definition table
+ u32 def_entries;
+
+ MFT_REC *new_rec;
+
+ u16 *upcase;
+
+ struct nls_table *nls;
+
+ struct {
+ u64 lbo, lbo2;
+ ntfs_inode *ni;
+ wnd_bitmap bitmap; // $MFT::Bitmap
+ ulong reserved_bitmap;
+ size_t next_free; // The next record to allocate from
+ size_t used;
+ u32 recs_mirr; // Number of records MFTMirr
+ u8 next_reserved;
+ u8 reserved_bitmap_inited;
+ } mft;
+
+ struct {
+ wnd_bitmap bitmap; // $Bitmap::Data
+ CLST next_free_lcn;
+ } used;
+
+ struct {
+ u64 size; // in bytes
+ u64 blocks; // in blocks
+ u64 ser_num;
+ ntfs_inode *ni;
+ __le16 flags; // see VOLUME_FLAG_XXX
+ u8 major_ver;
+ u8 minor_ver;
+ char label[65];
+ bool real_dirty; /* real fs state*/
+ } volume;
+
+ struct {
+ ntfs_index index_sii;
+ ntfs_index index_sdh;
+ ntfs_inode *ni;
+ u32 next_id;
+ u64 next_off;
+
+ __le32 def_file_id;
+ __le32 def_dir_id;
+ } security;
+
+ struct {
+ ntfs_index index_r;
+ ntfs_inode *ni;
+ u64 max_size; // 16K
+ } reparse;
+
+ struct {
+ ntfs_index index_o;
+ ntfs_inode *ni;
+ } objid;
+
+ struct {
+ /*protect 'frame_unc' and 'ctx'*/
+ spinlock_t lock;
+ u8 *frame_unc;
+ struct lznt *ctx;
+ } compress;
+
+ struct mount_options options;
+ struct ratelimit_state ratelimit;
+
+} ntfs_sb_info;
+
+typedef struct {
+ struct rb_node node;
+ ntfs_sb_info *sbi;
+
+ CLST rno;
+ MFT_REC *mrec;
+ struct ntfs_buffers nb;
+
+ bool dirty;
+} mft_inode;
+
+#define NI_FLAG_DIR 0x00000001
+#define NI_FLAG_RESIDENT 0x00000002
+#define NI_FLAG_UPDATE_PARENT 0x00000004
+
+/* Data attribute is compressed special way */
+#define NI_FLAG_COMPRESSED_MASK 0x00000f00 //
+/* Data attribute is deduplicated */
+#define NI_FLAG_DEDUPLICATED 0x00001000
+#define NI_FLAG_EA 0x00002000
+
+/* ntfs file system inode data memory */
+typedef struct ntfs_inode {
+ mft_inode mi; // base record
+
+ loff_t i_valid; /* valid size */
+ struct timespec64 i_crtime;
+
+ struct mutex ni_lock;
+
+ /* file attributes from std */
+ FILE_ATTRIBUTE std_fa;
+ __le32 std_security_id;
+
+ // subrecords tree
+ struct rb_root mi_tree;
+
+ union {
+ ntfs_index dir;
+ struct {
+ struct rw_semaphore run_lock;
+ struct runs_tree run;
+ } file;
+ };
+
+ struct {
+ struct runs_tree run;
+ void *le; // 1K aligned memory
+ size_t size;
+ bool dirty;
+ } attr_list;
+
+ size_t ni_flags; // NI_FLAG_XXX
+
+ struct inode vfs_inode;
+} ntfs_inode;
+
+struct indx_node {
+ struct ntfs_buffers nb;
+ INDEX_BUFFER *index;
+};
+
+struct ntfs_fnd {
+ int level;
+ struct indx_node *nodes[20];
+ NTFS_DE *de[20];
+ NTFS_DE *root_de;
+};
+
+enum REPARSE_SIGN {
+ REPARSE_NONE = 0,
+ REPARSE_COMPRESSED = 1,
+ REPARSE_DEDUPLICATED = 2,
+ REPARSE_LINK = 3
+};
+
+/* functions from attrib.c*/
+int attr_load_runs(ATTRIB *attr, ntfs_inode *ni, struct runs_tree *run);
+int attr_allocate_clusters(ntfs_sb_info *sbi, struct runs_tree *run, CLST vcn,
+ CLST lcn, CLST len, CLST *pre_alloc,
+ enum ALLOCATE_OPT opt, CLST *alen, const size_t fr,
+ CLST *new_lcn);
+int attr_set_size(ntfs_inode *ni, ATTR_TYPE type, const __le16 *name,
+ u8 name_len, struct runs_tree *run, u64 new_size,
+ const u64 *new_valid, bool keep_prealloc, ATTRIB **ret);
+int attr_data_get_block(ntfs_inode *ni, CLST vcn, CLST *lcn, CLST *len,
+ bool *new);
+int attr_load_runs_vcn(ntfs_inode *ni, ATTR_TYPE type, const __le16 *name,
+ u8 name_len, struct runs_tree *run, CLST vcn);
+int attr_is_frame_compressed(ntfs_inode *ni, ATTRIB *attr, CLST frame,
+ CLST *clst_data, bool *is_compr);
+int attr_allocate_frame(ntfs_inode *ni, CLST frame, size_t compr_size,
+ u64 new_valid);
+
+/* functions from attrlist.c*/
+void al_destroy(ntfs_inode *ni);
+bool al_verify(ntfs_inode *ni);
+int ntfs_load_attr_list(ntfs_inode *ni, ATTRIB *attr);
+ATTR_LIST_ENTRY *al_enumerate(ntfs_inode *ni, ATTR_LIST_ENTRY *le);
+ATTR_LIST_ENTRY *al_find_le(ntfs_inode *ni, ATTR_LIST_ENTRY *le,
+ const ATTRIB *attr);
+ATTR_LIST_ENTRY *al_find_ex(ntfs_inode *ni, ATTR_LIST_ENTRY *le, ATTR_TYPE type,
+ const __le16 *name, u8 name_len, const CLST *vcn);
+int al_add_le(ntfs_inode *ni, ATTR_TYPE type, const __le16 *name, u8 name_len,
+ CLST svcn, __le16 id, const MFT_REF *ref,
+ ATTR_LIST_ENTRY **new_le);
+bool al_remove_le(ntfs_inode *ni, ATTR_LIST_ENTRY *le);
+bool al_delete_le(ntfs_inode *ni, ATTR_TYPE type, CLST vcn, const __le16 *name,
+ size_t name_len, const MFT_REF *ref);
+int al_update(ntfs_inode *ni);
+static inline size_t al_aligned(size_t size)
+{
+ return (size + 1023) & ~(size_t)1023;
+}
+
+/* globals from bitfunc.c */
+bool are_bits_clear(const ulong *map, size_t bit, size_t nbits);
+bool are_bits_set(const ulong *map, size_t bit, size_t nbits);
+size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits);
+
+/* globals from dir.c */
+int uni_to_x8(ntfs_sb_info *sbi, const struct le_str *uni, u8 *buf,
+ int buf_len);
+int x8_to_uni(ntfs_sb_info *sbi, const u8 *name, u32 name_len,
+ struct cpu_str *uni, u32 max_ulen, enum utf16_endian endian);
+struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni,
+ struct ntfs_fnd *fnd);
+struct inode *dir_search(struct inode *dir, const struct qstr *name,
+ struct ntfs_fnd *fnd);
+bool dir_is_empty(struct inode *dir);
+extern const struct file_operations ntfs_dir_operations;
+
+/* globals from file.c*/
+int ntfs_getattr(const struct path *path, struct kstat *stat, u32 request_mask,
+ u32 flags);
+void ntfs_sparse_cluster(struct inode *inode, struct page *page0, loff_t vbo,
+ u32 bytes);
+int ntfs_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync);
+void ntfs_truncate_blocks(struct inode *inode, loff_t offset);
+int ntfs_setattr(struct dentry *dentry, struct iattr *attr);
+int ntfs_file_open(struct inode *inode, struct file *file);
+extern const struct inode_operations ntfs_special_inode_operations;
+extern const struct inode_operations ntfs_file_inode_operations;
+extern const struct file_operations ntfs_file_operations;
+
+/* globals from frecord.c */
+void ni_remove_mi(ntfs_inode *ni, mft_inode *mi);
+ATTR_STD_INFO *ni_std(ntfs_inode *ni);
+void ni_clear(ntfs_inode *ni);
+int ni_load_mi_ex(ntfs_inode *ni, CLST rno, mft_inode **mi);
+int ni_load_mi(ntfs_inode *ni, ATTR_LIST_ENTRY *le, mft_inode **mi);
+ATTRIB *ni_find_attr(ntfs_inode *ni, ATTRIB *attr, ATTR_LIST_ENTRY **entry_o,
+ ATTR_TYPE type, const __le16 *name, u8 name_len,
+ const CLST *vcn, mft_inode **mi);
+ATTRIB *ni_enum_attr_ex(ntfs_inode *ni, ATTRIB *attr, ATTR_LIST_ENTRY **le);
+ATTRIB *ni_load_attr(ntfs_inode *ni, ATTR_TYPE type, const __le16 *name,
+ u8 name_len, CLST vcn, mft_inode **pmi);
+int ni_load_all_mi(ntfs_inode *ni);
+bool ni_add_subrecord(ntfs_inode *ni, CLST rno, mft_inode **mi);
+int ni_remove_attr(ntfs_inode *ni, ATTR_TYPE type, const __le16 *name,
+ size_t name_len, bool base_only, const __le16 *id);
+int ni_create_attr_list(ntfs_inode *ni);
+int ni_expand_list(ntfs_inode *ni);
+int ni_insert_nonresident(ntfs_inode *ni, ATTR_TYPE type, const __le16 *name,
+ u8 name_len, const struct runs_tree *run, CLST svcn,
+ CLST len, __le16 flags, ATTRIB **new_attr,
+ mft_inode **mi);
+int ni_insert_resident(ntfs_inode *ni, u32 data_size, ATTR_TYPE type,
+ const __le16 *name, u8 name_len, ATTRIB **new_attr,
+ mft_inode **mi);
+int ni_remove_attr_le(ntfs_inode *ni, ATTRIB *attr, ATTR_LIST_ENTRY *le);
+int ni_delete_all(ntfs_inode *ni);
+ATTR_FILE_NAME *ni_fname_name(ntfs_inode *ni, const struct cpu_str *uni,
+ const MFT_REF *home, ATTR_LIST_ENTRY **entry);
+ATTR_FILE_NAME *ni_fname_type(ntfs_inode *ni, u8 name_type,
+ ATTR_LIST_ENTRY **entry);
+u16 ni_fnames_count(ntfs_inode *ni);
+int ni_init_compress(ntfs_inode *ni, struct COMPRESS_CTX *ctx);
+enum REPARSE_SIGN ni_parse_reparse(ntfs_inode *ni, ATTRIB *attr, void *buffer);
+int ni_write_inode(struct inode *inode, int sync, const char *hint);
+#define _ni_write_inode(i, w) ni_write_inode(i, w, __func__)
+
+/* globals from compress.c */
+int ni_readpage_cmpr(ntfs_inode *ni, struct page *page);
+int ni_writepage_cmpr(struct page *page, int sync);
+
+/* globals from fslog.c */
+int log_replay(ntfs_inode *ni);
+
+/* globals from fsntfs.c */
+bool ntfs_fix_pre_write(NTFS_RECORD_HEADER *rhdr, size_t bytes);
+int ntfs_fix_post_read(NTFS_RECORD_HEADER *rhdr, size_t bytes, bool simple);
+int ntfs_extend_init(ntfs_sb_info *sbi);
+int ntfs_loadlog_and_replay(ntfs_inode *ni, ntfs_sb_info *sbi);
+const ATTR_DEF_ENTRY *ntfs_query_def(ntfs_sb_info *sbi, ATTR_TYPE Type);
+int ntfs_look_for_free_space(ntfs_sb_info *sbi, CLST lcn, CLST len,
+ CLST *new_lcn, CLST *new_len,
+ enum ALLOCATE_OPT opt);
+int ntfs_look_free_mft(ntfs_sb_info *sbi, CLST *rno, bool mft, ntfs_inode *ni,
+ mft_inode **mi);
+void ntfs_mark_rec_free(ntfs_sb_info *sbi, CLST nRecord);
+int ntfs_clear_mft_tail(ntfs_sb_info *sbi, size_t from, size_t to);
+int ntfs_refresh_zone(ntfs_sb_info *sbi);
+int ntfs_update_mftmirr(ntfs_sb_info *sbi, int wait);
+enum NTFS_DIRTY_FLAGS {
+ NTFS_DIRTY_DIRTY = 0,
+ NTFS_DIRTY_CLEAR = 1,
+ NTFS_DIRTY_ERROR = 2,
+};
+int ntfs_set_state(ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty);
+int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer);
+int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes,
+ const void *buffer, int wait);
+int ntfs_sb_write_run(ntfs_sb_info *sbi, struct runs_tree *run, u64 vbo,
+ const void *buf, size_t bytes);
+struct buffer_head *ntfs_bread_run(ntfs_sb_info *sbi, struct runs_tree *run,
+ u64 vbo);
+int ntfs_read_run_nb(ntfs_sb_info *sbi, struct runs_tree *run, u64 vbo,
+ void *buf, u32 bytes, struct ntfs_buffers *nb);
+int ntfs_read_bh_ex(ntfs_sb_info *sbi, struct runs_tree *run, u64 vbo,
+ NTFS_RECORD_HEADER *rhdr, u32 bytes,
+ struct ntfs_buffers *nb);
+int ntfs_get_bh(ntfs_sb_info *sbi, struct runs_tree *run, u64 vbo, u32 bytes,
+ struct ntfs_buffers *nb);
+int ntfs_write_bh_ex(ntfs_sb_info *sbi, NTFS_RECORD_HEADER *rhdr,
+ struct ntfs_buffers *nb, int sync);
+int ntfs_vbo_to_pbo(ntfs_sb_info *sbi, struct runs_tree *run, u64 vbo, u64 *pbo,
+ u64 *bytes);
+ntfs_inode *ntfs_new_inode(ntfs_sb_info *sbi, CLST nRec, bool dir);
+extern const u8 s_dir_security[0x50];
+extern const u8 s_file_security[0x58];
+int ntfs_security_init(ntfs_sb_info *sbi);
+int ntfs_get_security_by_id(ntfs_sb_info *sbi, u32 security_id, void **sd,
+ size_t *size);
+int ntfs_insert_security(ntfs_sb_info *sbi, const void *sd, u32 size,
+ __le32 *security_id, bool *inserted);
+int ntfs_reparse_init(ntfs_sb_info *sbi);
+int ntfs_objid_init(ntfs_sb_info *sbi);
+int ntfs_objid_remove(ntfs_sb_info *sbi, GUID *guid);
+int ntfs_insert_reparse(ntfs_sb_info *sbi, __le32 rtag, const MFT_REF *ref);
+int ntfs_remove_reparse(ntfs_sb_info *sbi, __le32 rtag, const MFT_REF *ref);
+void mark_as_free_ex(ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim);
+int run_deallocate(ntfs_sb_info *sbi, struct runs_tree *run, bool trim);
+
+/* globals from index.c */
+int indx_used_bit(ntfs_index *indx, ntfs_inode *ni, size_t *bit);
+void fnd_clear(struct ntfs_fnd *fnd);
+struct ntfs_fnd *fnd_get(ntfs_index *indx);
+void fnd_put(struct ntfs_fnd *fnd);
+void indx_clear(ntfs_index *idx);
+int indx_init(ntfs_index *indx, ntfs_sb_info *sbi, const ATTRIB *attr,
+ enum index_mutex_classed type);
+INDEX_ROOT *indx_get_root(ntfs_index *indx, ntfs_inode *ni, ATTRIB **attr,
+ mft_inode **mi);
+int indx_read(ntfs_index *idx, ntfs_inode *ni, CLST vbn,
+ struct indx_node **node);
+int indx_find(ntfs_index *indx, ntfs_inode *dir, const INDEX_ROOT *root,
+ const void *Key, size_t KeyLen, const void *param, int *diff,
+ NTFS_DE **entry, struct ntfs_fnd *fnd);
+int indx_find_sort(ntfs_index *indx, ntfs_inode *ni, const INDEX_ROOT *root,
+ NTFS_DE **entry, struct ntfs_fnd *fnd);
+int indx_find_raw(ntfs_index *indx, ntfs_inode *ni, const INDEX_ROOT *root,
+ NTFS_DE **entry, size_t *off, struct ntfs_fnd *fnd);
+int indx_insert_entry(ntfs_index *indx, ntfs_inode *ni, const NTFS_DE *new_de,
+ const void *param, struct ntfs_fnd *fnd);
+int indx_delete_entry(ntfs_index *indx, ntfs_inode *ni, const void *key,
+ u32 key_len, const void *param);
+int indx_update_dup(ntfs_inode *ni, ntfs_sb_info *sbi,
+ const ATTR_FILE_NAME *fname, const NTFS_DUP_INFO *dup,
+ int sync);
+
+/* globals from inode.c */
+struct inode *ntfs_iget5(struct super_block *sb, const MFT_REF *ref,
+ const struct cpu_str *name);
+int ntfs_set_size(struct inode *inode, u64 new_size);
+int reset_log_file(struct inode *inode);
+int ntfs_get_block(struct inode *inode, sector_t vbn,
+ struct buffer_head *bh_result, int create);
+int ntfs_write_inode(struct inode *inode, struct writeback_control *wbc);
+int ntfs_sync_inode(struct inode *inode);
+int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,
+ struct inode *i2);
+int inode_write_data(struct inode *inode, const void *data, size_t bytes);
+int ntfs_create_inode(struct inode *dir, struct dentry *dentry,
+ struct file *file, umode_t mode, dev_t dev,
+ const char *symname, unsigned int size, int excl,
+ struct ntfs_fnd *fnd, struct inode **new_inode);
+int ntfs_link_inode(struct inode *inode, struct dentry *dentry);
+int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry);
+void ntfs_evict_inode(struct inode *inode);
+int ntfs_readpage(struct file *file, struct page *page);
+extern const struct inode_operations ntfs_link_inode_operations;
+extern const struct address_space_operations ntfs_aops;
+extern const struct address_space_operations ntfs_aops_cmpr;
+
+/* globals from name_i.c*/
+int fill_name_de(ntfs_sb_info *sbi, void *buf, const struct qstr *name);
+struct dentry *ntfs_get_parent(struct dentry *child);
+
+extern const struct inode_operations ntfs_dir_inode_operations;
+
+/* globals from record.c */
+int mi_get(ntfs_sb_info *sbi, CLST rno, mft_inode **mi);
+void mi_put(mft_inode *mi);
+int mi_init(mft_inode *mi, ntfs_sb_info *sbi, CLST rno);
+int mi_read(mft_inode *mi, bool is_mft);
+ATTRIB *mi_enum_attr(mft_inode *mi, ATTRIB *attr);
+// TODO: id?
+ATTRIB *mi_find_attr(mft_inode *mi, ATTRIB *attr, ATTR_TYPE type,
+ const __le16 *name, size_t name_len, const __le16 *id);
+static inline ATTRIB *rec_find_attr_le(mft_inode *rec, ATTR_LIST_ENTRY *le)
+{
+ return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len,
+ &le->id);
+}
+int mi_write(mft_inode *mi, int wait);
+int mi_format_new(mft_inode *mi, ntfs_sb_info *sbi, CLST rno, __le16 flags,
+ bool is_mft);
+void mi_mark_free(mft_inode *mi);
+ATTRIB *mi_insert_attr(mft_inode *mi, ATTR_TYPE type, const __le16 *name,
+ u8 name_len, u32 asize, u16 name_off);
+
+bool mi_remove_attr(mft_inode *mi, ATTRIB *attr);
+bool mi_resize_attr(mft_inode *mi, ATTRIB *attr, int bytes);
+int mi_pack_runs(mft_inode *mi, ATTRIB *attr, struct runs_tree *run, CLST len);
+static inline bool mi_is_ref(const mft_inode *mi, const MFT_REF *ref)
+{
+ if (le32_to_cpu(ref->low) != mi->rno)
+ return false;
+ if (ref->seq != mi->mrec->seq)
+ return false;
+
+#ifdef NTFS3_64BIT_CLUSTER
+ return le16_to_cpu(ref->high) == (mi->rno >> 32);
+#else
+ return !ref->high;
+#endif
+}
+
+/* globals from run.c */
+bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn,
+ CLST *len, size_t *index);
+void run_truncate(struct runs_tree *run, CLST vcn);
+void run_truncate_head(struct runs_tree *run, CLST vcn);
+bool run_lookup(const struct runs_tree *run, CLST Vcn, size_t *Index);
+bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len);
+bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn,
+ CLST *lcn, CLST *len);
+bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn);
+
+int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf,
+ u32 run_buf_size, CLST *packed_vcns);
+int run_unpack(struct runs_tree *run, ntfs_sb_info *sbi, CLST ino, CLST svcn,
+ CLST evcn, const u8 *run_buf, u32 run_buf_size);
+
+#ifdef NTFS3_CHECK_FREE_CLST
+int run_unpack_ex(struct runs_tree *run, ntfs_sb_info *sbi, CLST ino, CLST svcn,
+ CLST evcn, const u8 *run_buf, u32 run_buf_size);
+#else
+#define run_unpack_ex run_unpack
+#endif
+int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn);
+
+/* globals from super.c */
+void *ntfs_set_shared(void *ptr, u32 bytes);
+void *ntfs_put_shared(void *ptr);
+void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len);
+int ntfs_discard(ntfs_sb_info *sbi, CLST Lcn, CLST Len);
+
+/* globals from ubitmap.c*/
+void wnd_close(wnd_bitmap *wnd);
+static inline size_t wnd_zeroes(const wnd_bitmap *wnd)
+{
+ return wnd->total_zeroes;
+}
+void wnd_trace(wnd_bitmap *wnd);
+void wnd_trace_tree(wnd_bitmap *wnd, u32 nExtents, const char *Hint);
+int wnd_init(wnd_bitmap *wnd, struct super_block *sb, size_t nBits);
+int wnd_set_free(wnd_bitmap *wnd, size_t FirstBit, size_t Bits);
+int wnd_set_used(wnd_bitmap *wnd, size_t FirstBit, size_t Bits);
+bool wnd_is_free(wnd_bitmap *wnd, size_t FirstBit, size_t Bits);
+bool wnd_is_used(wnd_bitmap *wnd, size_t FirstBit, size_t Bits);
+
+/* Possible values for 'flags' 'wnd_find' */
+#define BITMAP_FIND_MARK_AS_USED 0x01
+#define BITMAP_FIND_FULL 0x02
+size_t wnd_find(wnd_bitmap *wnd, size_t to_alloc, size_t hint, size_t flags,
+ size_t *allocated);
+int wnd_extend(wnd_bitmap *wnd, size_t new_bits);
+void wnd_zone_set(wnd_bitmap *wnd, size_t Lcn, size_t Len);
+int ntfs_trim_fs(ntfs_sb_info *sbi, struct fstrim_range *range);
+
+/* globals from upcase.c */
+int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2,
+ const u16 *upcase);
+int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2,
+ const u16 *upcase);
+
+/* globals from xattr.c */
+struct posix_acl *ntfs_get_acl(struct inode *inode, int type);
+int ntfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
+int ntfs_acl_chmod(struct inode *inode);
+int ntfs_permission(struct inode *inode, int mask);
+ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
+extern const struct xattr_handler *ntfs_xattr_handlers[];
+
+/* globals from lznt.c */
+struct lznt *get_compression_ctx(bool std);
+size_t compress_lznt(const void *uncompressed, size_t uncompressed_size,
+ void *compressed, size_t compressed_size,
+ struct lznt *ctx);
+ssize_t decompress_lznt(const void *compressed, size_t compressed_size,
+ void *uncompressed, size_t uncompressed_size);
+
+char *attr_str(const ATTRIB *attr, char *buf, size_t buf_len);
+
+static inline bool is_nt5(ntfs_sb_info *sbi)
+{
+ return sbi->volume.major_ver >= 3;
+}
+
+/*(sb->s_flags & SB_ACTIVE)*/
+static inline bool is_mounted(ntfs_sb_info *sbi)
+{
+ return !!sbi->sb->s_root;
+}
+
+static inline bool ntfs_is_meta_file(ntfs_sb_info *sbi, CLST rno)
+{
+ return rno < MFT_REC_FREE || rno == sbi->objid_no ||
+ rno == sbi->quota_no || rno == sbi->reparse_no ||
+ rno == sbi->usn_jrnl_no;
+}
+
+static inline void ntfs_unmap_page(struct page *page)
+{
+ kunmap(page);
+ put_page(page);
+}
+
+static inline struct page *ntfs_map_page(struct address_space *mapping,
+ unsigned long index)
+{
+ struct page *page = read_mapping_page(mapping, index, NULL);
+
+ if (!IS_ERR(page)) {
+ kmap(page);
+ if (!PageError(page))
+ return page;
+ ntfs_unmap_page(page);
+ return ERR_PTR(-EIO);
+ }
+ return page;
+}
+
+static inline size_t wnd_zone_bit(const wnd_bitmap *wnd)
+{
+ return wnd->zone_bit;
+}
+
+static inline size_t wnd_zone_len(const wnd_bitmap *wnd)
+{
+ return wnd->zone_end - wnd->zone_bit;
+}
+
+static inline void run_init(struct runs_tree *run)
+{
+ run->runs_ = NULL;
+ run->count = 0;
+ run->allocated = 0;
+}
+
+static inline struct runs_tree *run_alloc(void)
+{
+ return ntfs_alloc(sizeof(struct runs_tree), 1);
+}
+
+static inline void run_close(struct runs_tree *run)
+{
+ ntfs_free(run->runs_);
+ memset(run, 0, sizeof(*run));
+}
+
+static inline void run_free(struct runs_tree *run)
+{
+ if (run) {
+ ntfs_free(run->runs_);
+ ntfs_free(run);
+ }
+}
+
+static inline bool run_is_empty(struct runs_tree *run)
+{
+ return !run->count;
+}
+
+/* NTFS uses quad aligned bitmaps */
+static inline size_t bitmap_size(size_t bits)
+{
+ return QuadAlign((bits + 7) >> 3);
+}
+
+#define _100ns2seconds 10000000
+#define SecondsToStartOf1970 0x00000002B6109100
+
+#define NTFS_TIME_GRAN 100
+
+/*
+ * kernel2nt
+ *
+ * converts in-memory kernel timestamp into nt time
+ */
+static inline __le64 kernel2nt(const struct timespec64 *ts)
+{
+ // 10^7 units of 100 nanoseconds one second
+ return cpu_to_le64(_100ns2seconds *
+ (ts->tv_sec + SecondsToStartOf1970) +
+ ts->tv_nsec / NTFS_TIME_GRAN);
+}
+
+/*
+ * nt2kernel
+ *
+ * converts on-disk nt time into kernel timestamp
+ */
+static inline void nt2kernel(const __le64 tm, struct timespec64 *ts)
+{
+ u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970;
+
+ // WARNING: do_div changes its first argument(!)
+ ts->tv_nsec = do_div(t, _100ns2seconds) * 100;
+ ts->tv_sec = t;
+}
+
+static inline ntfs_sb_info *ntfs_sb(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+/* Align up on cluster boundary */
+static inline u64 ntfs_up_cluster(const ntfs_sb_info *sbi, u64 size)
+{
+ return (size + sbi->cluster_mask) & ~((u64)sbi->cluster_mask);
+}
+
+/* Align up on cluster boundary */
+static inline u64 ntfs_up_block(const struct super_block *sb, u64 size)
+{
+ return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1);
+}
+
+static inline CLST bytes_to_cluster(const ntfs_sb_info *sbi, u64 size)
+{
+ return (size + sbi->cluster_mask) >> sbi->cluster_bits;
+}
+
+static inline u64 bytes_to_block(const struct super_block *sb, u64 size)
+{
+ return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
+}
+
+/* calculates ((bytes + frame_size - 1)/frame_size)*frame_size; */
+static inline u64 ntfs_up_frame(const ntfs_sb_info *sbi, u64 bytes, u8 c_unit)
+{
+ u32 bytes_per_frame = 1u << (c_unit + sbi->cluster_bits);
+
+ return (bytes + bytes_per_frame - 1) & ~(u64)(bytes_per_frame - 1);
+}
+
+static inline struct buffer_head *ntfs_bread(struct super_block *sb,
+ sector_t block)
+{
+ struct buffer_head *bh;
+
+ bh = sb_bread(sb, block);
+ if (bh)
+ return bh;
+
+ __ntfs_trace(sb, KERN_ERR, "failed to read volume at offset 0x%llx",
+ (u64)block << sb->s_blocksize_bits);
+ return NULL;
+}
+
+static inline bool is_power_of2(size_t v)
+{
+ return v && !(v & (v - 1));
+}
+
+static inline ntfs_inode *ntfs_i(struct inode *inode)
+{
+ return container_of(inode, ntfs_inode, vfs_inode);
+}
+
+static inline bool is_compressed(const ntfs_inode *ni)
+{
+ return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) ||
+ (ni->ni_flags & NI_FLAG_COMPRESSED_MASK);
+}
+
+static inline bool is_dedup(const ntfs_inode *ni)
+{
+ return ni->ni_flags & NI_FLAG_DEDUPLICATED;
+}
+
+static inline bool is_encrypted(const ntfs_inode *ni)
+{
+ return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED;
+}
+
+static inline bool is_sparsed(const ntfs_inode *ni)
+{
+ return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE;
+}
+
+static inline void le16_sub_cpu(__le16 *var, u16 val)
+{
+ *var = cpu_to_le16(le16_to_cpu(*var) - val);
+}
+
+static inline void le32_sub_cpu(__le32 *var, u32 val)
+{
+ *var = cpu_to_le32(le32_to_cpu(*var) - val);
+}
+
+static inline void nb_put(struct ntfs_buffers *nb)
+{
+ u32 i, nbufs = nb->nbufs;
+
+ if (!nbufs)
+ return;
+
+ for (i = 0; i < nbufs; i++)
+ put_bh(nb->bh[i]);
+ nb->nbufs = 0;
+}
+
+static inline void put_indx_node(struct indx_node *in)
+{
+ if (!in)
+ return;
+
+ ntfs_free(in->index);
+ nb_put(&in->nb);
+ ntfs_free(in);
+}
+
+static inline void mi_clear(mft_inode *mi)
+{
+ nb_put(&mi->nb);
+ ntfs_free(mi->mrec);
+ mi->mrec = NULL;
+}
+
+static inline void ni_lock(ntfs_inode *ni)
+{
+ mutex_lock(&ni->ni_lock);
+}
+
+static inline void ni_unlock(ntfs_inode *ni)
+{
+ mutex_unlock(&ni->ni_lock);
+}
+
+static inline int ni_trylock(ntfs_inode *ni)
+{
+ return mutex_trylock(&ni->ni_lock);
+}
+
+static inline int ni_has_resident_data(ntfs_inode *ni)
+{
+ return ni->ni_flags & NI_FLAG_RESIDENT;
+}
+
+static inline int attr_load_runs_attr(ntfs_inode *ni, ATTRIB *attr,
+ struct runs_tree *run, CLST vcn)
+{
+ return attr_load_runs_vcn(ni, attr->type, attr_name(attr),
+ attr->name_len, run, vcn);
+}
+
+static inline void le64_sub_cpu(__le64 *var, u64 val)
+{
+ *var = cpu_to_le64(le64_to_cpu(*var) - val);
+}
diff --git a/fs/ntfs3/upcase.c b/fs/ntfs3/upcase.c
new file mode 100644
index 000000000000..0bb8d75b8abb
--- /dev/null
+++ b/fs/ntfs3/upcase.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/fs/ntfs3/upcase.c
+ *
+ * Copyright (C) 2019-2020 Paragon Software GmbH, All rights reserved.
+ *
+ */
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/module.h>
+#include <linux/nls.h>
+
+#include "debug.h"
+#include "ntfs.h"
+#include "ntfs_fs.h"
+
+static inline u16 upcase_unicode_char(const u16 *upcase, u16 chr)
+{
+ if (chr < 'a')
+ return chr;
+
+ if (chr <= 'z')
+ return (u16)(chr - ('a' - 'A'));
+
+ return upcase[chr];
+}
+
+int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2,
+ const u16 *upcase)
+{
+ int diff;
+ size_t len = l1 < l2 ? l1 : l2;
+
+ if (upcase) {
+ while (len--) {
+ diff = upcase_unicode_char(upcase, le16_to_cpu(*s1++)) -
+ upcase_unicode_char(upcase, le16_to_cpu(*s2++));
+ if (diff)
+ return diff;
+ }
+ } else {
+ while (len--) {
+ diff = le16_to_cpu(*s1++) - le16_to_cpu(*s2++);
+ if (diff)
+ return diff;
+ }
+ }
+
+ return (int)(l1 - l2);
+}
+
+int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2,
+ const u16 *upcase)
+{
+ const u16 *s1 = uni1->name;
+ const __le16 *s2 = uni2->name;
+ size_t l1 = uni1->len;
+ size_t l2 = uni2->len;
+ size_t len = l1 < l2 ? l1 : l2;
+ int diff;
+
+ if (upcase) {
+ while (len--) {
+ diff = upcase_unicode_char(upcase, *s1++) -
+ upcase_unicode_char(upcase, le16_to_cpu(*s2++));
+ if (diff)
+ return diff;
+ }
+ } else {
+ while (len--) {
+ diff = *s1++ - le16_to_cpu(*s2++);
+ if (diff)
+ return diff;
+ }
+ }
+
+ return l1 - l2;
+}
--
2.25.2
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