Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * |
| 4 | * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | // clang-format off |
Kari Argillander | 87790b6 | 2021-08-16 15:01:56 +0300 | [diff] [blame] | 9 | #ifndef _LINUX_NTFS3_NTFS_FS_H |
| 10 | #define _LINUX_NTFS3_NTFS_FS_H |
| 11 | |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 12 | #define MINUS_ONE_T ((size_t)(-1)) |
| 13 | /* Biggest MFT / smallest cluster */ |
| 14 | #define MAXIMUM_BYTES_PER_MFT 4096 |
| 15 | #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) |
| 16 | |
| 17 | #define MAXIMUM_BYTES_PER_INDEX 4096 |
| 18 | #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) |
| 19 | |
| 20 | /* ntfs specific error code when fixup failed*/ |
| 21 | #define E_NTFS_FIXUP 555 |
| 22 | /* ntfs specific error code about resident->nonresident*/ |
| 23 | #define E_NTFS_NONRESIDENT 556 |
| 24 | /* ntfs specific error code about punch hole*/ |
| 25 | #define E_NTFS_NOTALIGNED 557 |
| 26 | |
| 27 | |
| 28 | /* sbi->flags */ |
| 29 | #define NTFS_FLAGS_NODISCARD 0x00000001 |
| 30 | /* Set when LogFile is replaying */ |
| 31 | #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 |
| 32 | /* Set when we changed first MFT's which copy must be updated in $MftMirr */ |
| 33 | #define NTFS_FLAGS_MFTMIRR 0x00001000 |
| 34 | #define NTFS_FLAGS_NEED_REPLAY 0x04000000 |
| 35 | |
| 36 | |
| 37 | /* ni->ni_flags */ |
| 38 | /* |
| 39 | * Data attribute is external compressed (lzx/xpress) |
| 40 | * 1 - WOF_COMPRESSION_XPRESS4K |
| 41 | * 2 - WOF_COMPRESSION_XPRESS8K |
| 42 | * 3 - WOF_COMPRESSION_XPRESS16K |
| 43 | * 4 - WOF_COMPRESSION_LZX32K |
| 44 | */ |
| 45 | #define NI_FLAG_COMPRESSED_MASK 0x0000000f |
| 46 | /* Data attribute is deduplicated */ |
| 47 | #define NI_FLAG_DEDUPLICATED 0x00000010 |
| 48 | #define NI_FLAG_EA 0x00000020 |
| 49 | #define NI_FLAG_DIR 0x00000040 |
| 50 | #define NI_FLAG_RESIDENT 0x00000080 |
| 51 | #define NI_FLAG_UPDATE_PARENT 0x00000100 |
| 52 | // clang-format on |
| 53 | |
| 54 | struct ntfs_mount_options { |
| 55 | struct nls_table *nls; |
| 56 | |
| 57 | kuid_t fs_uid; |
| 58 | kgid_t fs_gid; |
| 59 | u16 fs_fmask_inv; |
| 60 | u16 fs_dmask_inv; |
| 61 | |
| 62 | unsigned uid : 1, /* uid was set */ |
| 63 | gid : 1, /* gid was set */ |
| 64 | fmask : 1, /* fmask was set */ |
| 65 | dmask : 1, /*dmask was set*/ |
| 66 | sys_immutable : 1, /* immutable system files */ |
| 67 | discard : 1, /* issue discard requests on deletions */ |
| 68 | sparse : 1, /*create sparse files*/ |
| 69 | showmeta : 1, /*show meta files*/ |
| 70 | nohidden : 1, /*do not show hidden files*/ |
| 71 | force : 1, /*rw mount dirty volume*/ |
| 72 | no_acs_rules : 1, /*exclude acs rules*/ |
| 73 | prealloc : 1 /*preallocate space when file is growing*/ |
| 74 | ; |
| 75 | }; |
| 76 | |
| 77 | /* special value to unpack and deallocate*/ |
| 78 | #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) |
| 79 | |
| 80 | /* TODO: use rb tree instead of array */ |
| 81 | struct runs_tree { |
| 82 | struct ntfs_run *runs; |
| 83 | size_t count; // Currently used size a ntfs_run storage. |
| 84 | size_t allocated; // Currently allocated ntfs_run storage size. |
| 85 | }; |
| 86 | |
| 87 | struct ntfs_buffers { |
| 88 | /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ |
| 89 | /* Biggest index / smallest cluster = 4096 / 512 = 8 */ |
| 90 | struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; |
| 91 | u32 bytes; |
| 92 | u32 nbufs; |
| 93 | u32 off; |
| 94 | }; |
| 95 | |
| 96 | enum ALLOCATE_OPT { |
| 97 | ALLOCATE_DEF = 0, // Allocate all clusters |
| 98 | ALLOCATE_MFT = 1, // Allocate for MFT |
| 99 | }; |
| 100 | |
| 101 | enum bitmap_mutex_classes { |
| 102 | BITMAP_MUTEX_CLUSTERS = 0, |
| 103 | BITMAP_MUTEX_MFT = 1, |
| 104 | }; |
| 105 | |
| 106 | struct wnd_bitmap { |
| 107 | struct super_block *sb; |
| 108 | struct rw_semaphore rw_lock; |
| 109 | |
| 110 | struct runs_tree run; |
| 111 | size_t nbits; |
| 112 | |
| 113 | size_t total_zeroes; // total number of free bits |
| 114 | u16 *free_bits; // free bits in each window |
| 115 | size_t nwnd; |
| 116 | u32 bits_last; // bits in last window |
| 117 | |
| 118 | struct rb_root start_tree; // extents, sorted by 'start' |
| 119 | struct rb_root count_tree; // extents, sorted by 'count + start' |
| 120 | size_t count; // extents count |
| 121 | |
| 122 | /* |
| 123 | * -1 Tree is activated but not updated (too many fragments) |
| 124 | * 0 - Tree is not activated |
| 125 | * 1 - Tree is activated and updated |
| 126 | */ |
| 127 | int uptodated; |
| 128 | size_t extent_min; // Minimal extent used while building |
| 129 | size_t extent_max; // Upper estimate of biggest free block |
| 130 | |
| 131 | /* Zone [bit, end) */ |
| 132 | size_t zone_bit; |
| 133 | size_t zone_end; |
| 134 | |
| 135 | bool set_tail; // not necessary in driver |
| 136 | bool inited; |
| 137 | }; |
| 138 | |
| 139 | typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, |
| 140 | size_t len2, const void *param); |
| 141 | |
| 142 | enum index_mutex_classed { |
| 143 | INDEX_MUTEX_I30 = 0, |
| 144 | INDEX_MUTEX_SII = 1, |
| 145 | INDEX_MUTEX_SDH = 2, |
| 146 | INDEX_MUTEX_SO = 3, |
| 147 | INDEX_MUTEX_SQ = 4, |
| 148 | INDEX_MUTEX_SR = 5, |
| 149 | INDEX_MUTEX_TOTAL |
| 150 | }; |
| 151 | |
| 152 | /* ntfs_index - allocation unit inside directory */ |
| 153 | struct ntfs_index { |
| 154 | struct runs_tree bitmap_run; |
| 155 | struct runs_tree alloc_run; |
| 156 | /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ |
| 157 | struct rw_semaphore run_lock; |
| 158 | |
| 159 | /*TODO: remove 'cmp'*/ |
| 160 | NTFS_CMP_FUNC cmp; |
| 161 | |
| 162 | u8 index_bits; // log2(root->index_block_size) |
| 163 | u8 idx2vbn_bits; // log2(root->index_block_clst) |
| 164 | u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits |
| 165 | u8 type; // index_mutex_classed |
| 166 | }; |
| 167 | |
| 168 | /* Minimum mft zone */ |
| 169 | #define NTFS_MIN_MFT_ZONE 100 |
| 170 | |
| 171 | /* ntfs file system in-core superblock data */ |
| 172 | struct ntfs_sb_info { |
| 173 | struct super_block *sb; |
| 174 | |
| 175 | u32 discard_granularity; |
| 176 | u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) |
| 177 | |
| 178 | u32 cluster_size; // bytes per cluster |
| 179 | u32 cluster_mask; // == cluster_size - 1 |
| 180 | u64 cluster_mask_inv; // ~(cluster_size - 1) |
| 181 | u32 block_mask; // sb->s_blocksize - 1 |
| 182 | u32 blocks_per_cluster; // cluster_size / sb->s_blocksize |
| 183 | |
| 184 | u32 record_size; |
| 185 | u32 sector_size; |
| 186 | u32 index_size; |
| 187 | |
| 188 | u8 sector_bits; |
| 189 | u8 cluster_bits; |
| 190 | u8 record_bits; |
| 191 | |
| 192 | u64 maxbytes; // Maximum size for normal files |
| 193 | u64 maxbytes_sparse; // Maximum size for sparse file |
| 194 | |
| 195 | u32 flags; // See NTFS_FLAGS_XXX |
| 196 | |
| 197 | CLST bad_clusters; // The count of marked bad clusters |
| 198 | |
| 199 | u16 max_bytes_per_attr; // maximum attribute size in record |
| 200 | u16 attr_size_tr; // attribute size threshold (320 bytes) |
| 201 | |
| 202 | /* Records in $Extend */ |
| 203 | CLST objid_no; |
| 204 | CLST quota_no; |
| 205 | CLST reparse_no; |
| 206 | CLST usn_jrnl_no; |
| 207 | |
| 208 | struct ATTR_DEF_ENTRY *def_table; // attribute definition table |
| 209 | u32 def_entries; |
| 210 | u32 ea_max_size; |
| 211 | |
| 212 | struct MFT_REC *new_rec; |
| 213 | |
| 214 | u16 *upcase; |
| 215 | |
| 216 | struct { |
| 217 | u64 lbo, lbo2; |
| 218 | struct ntfs_inode *ni; |
| 219 | struct wnd_bitmap bitmap; // $MFT::Bitmap |
| 220 | /* |
| 221 | * MFT records [11-24) used to expand MFT itself |
| 222 | * They always marked as used in $MFT::Bitmap |
| 223 | * 'reserved_bitmap' contains real bitmap of these records |
| 224 | */ |
| 225 | ulong reserved_bitmap; // bitmap of used records [11 - 24) |
| 226 | size_t next_free; // The next record to allocate from |
| 227 | size_t used; // mft valid size in records |
| 228 | u32 recs_mirr; // Number of records in MFTMirr |
| 229 | u8 next_reserved; |
| 230 | u8 reserved_bitmap_inited; |
| 231 | } mft; |
| 232 | |
| 233 | struct { |
| 234 | struct wnd_bitmap bitmap; // $Bitmap::Data |
| 235 | CLST next_free_lcn; |
| 236 | } used; |
| 237 | |
| 238 | struct { |
| 239 | u64 size; // in bytes |
| 240 | u64 blocks; // in blocks |
| 241 | u64 ser_num; |
| 242 | struct ntfs_inode *ni; |
| 243 | __le16 flags; // cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY |
| 244 | u8 major_ver; |
| 245 | u8 minor_ver; |
| 246 | char label[65]; |
| 247 | bool real_dirty; /* real fs state*/ |
| 248 | } volume; |
| 249 | |
| 250 | struct { |
| 251 | struct ntfs_index index_sii; |
| 252 | struct ntfs_index index_sdh; |
| 253 | struct ntfs_inode *ni; |
| 254 | u32 next_id; |
| 255 | u64 next_off; |
| 256 | |
| 257 | __le32 def_security_id; |
| 258 | } security; |
| 259 | |
| 260 | struct { |
| 261 | struct ntfs_index index_r; |
| 262 | struct ntfs_inode *ni; |
| 263 | u64 max_size; // 16K |
| 264 | } reparse; |
| 265 | |
| 266 | struct { |
| 267 | struct ntfs_index index_o; |
| 268 | struct ntfs_inode *ni; |
| 269 | } objid; |
| 270 | |
| 271 | struct { |
| 272 | struct mutex mtx_lznt; |
| 273 | struct lznt *lznt; |
| 274 | #ifdef CONFIG_NTFS3_LZX_XPRESS |
| 275 | struct mutex mtx_xpress; |
| 276 | struct xpress_decompressor *xpress; |
| 277 | struct mutex mtx_lzx; |
| 278 | struct lzx_decompressor *lzx; |
| 279 | #endif |
| 280 | } compress; |
| 281 | |
| 282 | struct ntfs_mount_options options; |
| 283 | struct ratelimit_state msg_ratelimit; |
| 284 | }; |
| 285 | |
| 286 | /* |
| 287 | * one MFT record(usually 1024 bytes), consists of attributes |
| 288 | */ |
| 289 | struct mft_inode { |
| 290 | struct rb_node node; |
| 291 | struct ntfs_sb_info *sbi; |
| 292 | |
| 293 | struct MFT_REC *mrec; |
| 294 | struct ntfs_buffers nb; |
| 295 | |
| 296 | CLST rno; |
| 297 | bool dirty; |
| 298 | }; |
| 299 | |
| 300 | /* nested class for ntfs_inode::ni_lock */ |
| 301 | enum ntfs_inode_mutex_lock_class { |
| 302 | NTFS_INODE_MUTEX_DIRTY, |
| 303 | NTFS_INODE_MUTEX_SECURITY, |
| 304 | NTFS_INODE_MUTEX_OBJID, |
| 305 | NTFS_INODE_MUTEX_REPARSE, |
| 306 | NTFS_INODE_MUTEX_NORMAL, |
| 307 | NTFS_INODE_MUTEX_PARENT, |
| 308 | }; |
| 309 | |
| 310 | /* |
| 311 | * ntfs inode - extends linux inode. consists of one or more mft inodes |
| 312 | */ |
| 313 | struct ntfs_inode { |
| 314 | struct mft_inode mi; // base record |
| 315 | |
| 316 | /* |
| 317 | * Valid size: [0 - i_valid) - these range in file contains valid data |
| 318 | * Range [i_valid - inode->i_size) - contains 0 |
| 319 | * Usually i_valid <= inode->i_size |
| 320 | */ |
| 321 | u64 i_valid; |
| 322 | struct timespec64 i_crtime; |
| 323 | |
| 324 | struct mutex ni_lock; |
| 325 | |
| 326 | /* file attributes from std */ |
| 327 | enum FILE_ATTRIBUTE std_fa; |
| 328 | __le32 std_security_id; |
| 329 | |
| 330 | /* |
| 331 | * tree of mft_inode |
| 332 | * not empty when primary MFT record (usually 1024 bytes) can't save all attributes |
| 333 | * e.g. file becomes too fragmented or contains a lot of names |
| 334 | */ |
| 335 | struct rb_root mi_tree; |
| 336 | |
| 337 | /* |
| 338 | * This member is used in ntfs_readdir to ensure that all subrecords are loaded |
| 339 | */ |
| 340 | u8 mi_loaded; |
| 341 | |
| 342 | union { |
| 343 | struct ntfs_index dir; |
| 344 | struct { |
| 345 | struct rw_semaphore run_lock; |
| 346 | struct runs_tree run; |
| 347 | #ifdef CONFIG_NTFS3_LZX_XPRESS |
| 348 | struct page *offs_page; |
| 349 | #endif |
| 350 | } file; |
| 351 | }; |
| 352 | |
| 353 | struct { |
| 354 | struct runs_tree run; |
| 355 | struct ATTR_LIST_ENTRY *le; // 1K aligned memory |
| 356 | size_t size; |
| 357 | bool dirty; |
| 358 | } attr_list; |
| 359 | |
| 360 | size_t ni_flags; // NI_FLAG_XXX |
| 361 | |
| 362 | struct inode vfs_inode; |
| 363 | }; |
| 364 | |
| 365 | struct indx_node { |
| 366 | struct ntfs_buffers nb; |
| 367 | struct INDEX_BUFFER *index; |
| 368 | }; |
| 369 | |
| 370 | struct ntfs_fnd { |
| 371 | int level; |
| 372 | struct indx_node *nodes[20]; |
| 373 | struct NTFS_DE *de[20]; |
| 374 | struct NTFS_DE *root_de; |
| 375 | }; |
| 376 | |
| 377 | enum REPARSE_SIGN { |
| 378 | REPARSE_NONE = 0, |
| 379 | REPARSE_COMPRESSED = 1, |
| 380 | REPARSE_DEDUPLICATED = 2, |
| 381 | REPARSE_LINK = 3 |
| 382 | }; |
| 383 | |
| 384 | /* functions from attrib.c*/ |
| 385 | int attr_load_runs(struct ATTRIB *attr, struct ntfs_inode *ni, |
| 386 | struct runs_tree *run, const CLST *vcn); |
| 387 | int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, |
| 388 | CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, |
| 389 | enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, |
| 390 | CLST *new_lcn); |
| 391 | int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, |
| 392 | struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, |
| 393 | u64 new_size, struct runs_tree *run, |
| 394 | struct ATTRIB **ins_attr, struct page *page); |
| 395 | int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, |
| 396 | const __le16 *name, u8 name_len, struct runs_tree *run, |
| 397 | u64 new_size, const u64 *new_valid, bool keep_prealloc, |
| 398 | struct ATTRIB **ret); |
| 399 | int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, |
| 400 | CLST *len, bool *new); |
| 401 | int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); |
| 402 | int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); |
| 403 | int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, |
| 404 | const __le16 *name, u8 name_len, struct runs_tree *run, |
| 405 | CLST vcn); |
| 406 | int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, |
| 407 | const __le16 *name, u8 name_len, struct runs_tree *run, |
| 408 | u64 from, u64 to); |
| 409 | int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, |
| 410 | struct runs_tree *run, u64 frame, u64 frames, |
| 411 | u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); |
| 412 | int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, |
| 413 | CLST frame, CLST *clst_data); |
| 414 | int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, |
| 415 | u64 new_valid); |
| 416 | int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); |
| 417 | int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); |
| 418 | |
| 419 | /* functions from attrlist.c*/ |
| 420 | void al_destroy(struct ntfs_inode *ni); |
| 421 | bool al_verify(struct ntfs_inode *ni); |
| 422 | int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); |
| 423 | struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, |
| 424 | struct ATTR_LIST_ENTRY *le); |
| 425 | struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, |
| 426 | struct ATTR_LIST_ENTRY *le, |
| 427 | const struct ATTRIB *attr); |
| 428 | struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, |
| 429 | struct ATTR_LIST_ENTRY *le, |
| 430 | enum ATTR_TYPE type, const __le16 *name, |
| 431 | u8 name_len, const CLST *vcn); |
| 432 | int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, |
| 433 | u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, |
| 434 | struct ATTR_LIST_ENTRY **new_le); |
| 435 | bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); |
| 436 | bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, |
| 437 | const __le16 *name, size_t name_len, |
| 438 | const struct MFT_REF *ref); |
| 439 | int al_update(struct ntfs_inode *ni); |
| 440 | static inline size_t al_aligned(size_t size) |
| 441 | { |
| 442 | return (size + 1023) & ~(size_t)1023; |
| 443 | } |
| 444 | |
| 445 | /* globals from bitfunc.c */ |
| 446 | bool are_bits_clear(const ulong *map, size_t bit, size_t nbits); |
| 447 | bool are_bits_set(const ulong *map, size_t bit, size_t nbits); |
| 448 | size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits); |
| 449 | |
| 450 | /* globals from dir.c */ |
| 451 | int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const struct le_str *uni, |
| 452 | u8 *buf, int buf_len); |
| 453 | int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, |
| 454 | struct cpu_str *uni, u32 max_ulen, |
| 455 | enum utf16_endian endian); |
| 456 | struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, |
| 457 | struct ntfs_fnd *fnd); |
| 458 | bool dir_is_empty(struct inode *dir); |
| 459 | extern const struct file_operations ntfs_dir_operations; |
| 460 | |
| 461 | /* globals from file.c*/ |
| 462 | int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path, |
| 463 | struct kstat *stat, u32 request_mask, u32 flags); |
| 464 | void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, |
| 465 | CLST len); |
| 466 | int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, |
| 467 | struct iattr *attr); |
| 468 | int ntfs_file_open(struct inode *inode, struct file *file); |
| 469 | int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
| 470 | __u64 start, __u64 len); |
| 471 | extern const struct inode_operations ntfs_special_inode_operations; |
| 472 | extern const struct inode_operations ntfs_file_inode_operations; |
| 473 | extern const struct file_operations ntfs_file_operations; |
| 474 | |
| 475 | /* globals from frecord.c */ |
| 476 | void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); |
| 477 | struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); |
| 478 | struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); |
| 479 | void ni_clear(struct ntfs_inode *ni); |
| 480 | int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); |
| 481 | int ni_load_mi(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le, |
| 482 | struct mft_inode **mi); |
| 483 | struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, |
| 484 | struct ATTR_LIST_ENTRY **entry_o, |
| 485 | enum ATTR_TYPE type, const __le16 *name, |
| 486 | u8 name_len, const CLST *vcn, |
| 487 | struct mft_inode **mi); |
| 488 | struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, |
| 489 | struct ATTR_LIST_ENTRY **le, |
| 490 | struct mft_inode **mi); |
| 491 | struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, |
| 492 | const __le16 *name, u8 name_len, CLST vcn, |
| 493 | struct mft_inode **pmi); |
| 494 | int ni_load_all_mi(struct ntfs_inode *ni); |
| 495 | bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); |
| 496 | int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, |
| 497 | const __le16 *name, size_t name_len, bool base_only, |
| 498 | const __le16 *id); |
| 499 | int ni_create_attr_list(struct ntfs_inode *ni); |
| 500 | int ni_expand_list(struct ntfs_inode *ni); |
| 501 | int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, |
| 502 | const __le16 *name, u8 name_len, |
| 503 | const struct runs_tree *run, CLST svcn, CLST len, |
| 504 | __le16 flags, struct ATTRIB **new_attr, |
| 505 | struct mft_inode **mi); |
| 506 | int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, |
| 507 | enum ATTR_TYPE type, const __le16 *name, u8 name_len, |
| 508 | struct ATTRIB **new_attr, struct mft_inode **mi); |
| 509 | int ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, |
| 510 | struct ATTR_LIST_ENTRY *le); |
| 511 | int ni_delete_all(struct ntfs_inode *ni); |
| 512 | struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, |
| 513 | const struct cpu_str *uni, |
| 514 | const struct MFT_REF *home, |
| 515 | struct ATTR_LIST_ENTRY **entry); |
| 516 | struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, |
| 517 | struct ATTR_LIST_ENTRY **entry); |
| 518 | int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); |
| 519 | enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, |
| 520 | void *buffer); |
| 521 | int ni_write_inode(struct inode *inode, int sync, const char *hint); |
| 522 | #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) |
| 523 | int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, |
| 524 | __u64 vbo, __u64 len); |
| 525 | int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); |
| 526 | int ni_decompress_file(struct ntfs_inode *ni); |
| 527 | int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, |
| 528 | u32 pages_per_frame); |
| 529 | int ni_write_frame(struct ntfs_inode *ni, struct page **pages, |
| 530 | u32 pages_per_frame); |
| 531 | |
| 532 | /* globals from fslog.c */ |
| 533 | int log_replay(struct ntfs_inode *ni, bool *initialized); |
| 534 | |
| 535 | /* globals from fsntfs.c */ |
| 536 | bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); |
| 537 | int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, |
| 538 | bool simple); |
| 539 | int ntfs_extend_init(struct ntfs_sb_info *sbi); |
| 540 | int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); |
| 541 | const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi, |
| 542 | enum ATTR_TYPE Type); |
| 543 | int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, |
| 544 | CLST *new_lcn, CLST *new_len, |
| 545 | enum ALLOCATE_OPT opt); |
| 546 | int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, |
| 547 | struct ntfs_inode *ni, struct mft_inode **mi); |
| 548 | void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno); |
| 549 | int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); |
| 550 | int ntfs_refresh_zone(struct ntfs_sb_info *sbi); |
| 551 | int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); |
| 552 | enum NTFS_DIRTY_FLAGS { |
| 553 | NTFS_DIRTY_CLEAR = 0, |
| 554 | NTFS_DIRTY_DIRTY = 1, |
| 555 | NTFS_DIRTY_ERROR = 2, |
| 556 | }; |
| 557 | int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); |
| 558 | int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); |
| 559 | int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, |
| 560 | const void *buffer, int wait); |
| 561 | int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
| 562 | u64 vbo, const void *buf, size_t bytes); |
| 563 | struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, |
| 564 | const struct runs_tree *run, u64 vbo); |
| 565 | int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
| 566 | u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); |
| 567 | int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, |
| 568 | struct NTFS_RECORD_HEADER *rhdr, u32 bytes, |
| 569 | struct ntfs_buffers *nb); |
| 570 | int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, |
| 571 | u32 bytes, struct ntfs_buffers *nb); |
| 572 | int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, |
| 573 | struct ntfs_buffers *nb, int sync); |
| 574 | int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
| 575 | struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, |
| 576 | u32 op); |
| 577 | int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); |
| 578 | int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
| 579 | u64 vbo, u64 *lbo, u64 *bytes); |
| 580 | struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, |
| 581 | bool dir); |
| 582 | extern const u8 s_default_security[0x50]; |
| 583 | bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); |
| 584 | int ntfs_security_init(struct ntfs_sb_info *sbi); |
| 585 | int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, |
| 586 | struct SECURITY_DESCRIPTOR_RELATIVE **sd, |
| 587 | size_t *size); |
| 588 | int ntfs_insert_security(struct ntfs_sb_info *sbi, |
| 589 | const struct SECURITY_DESCRIPTOR_RELATIVE *sd, |
| 590 | u32 size, __le32 *security_id, bool *inserted); |
| 591 | int ntfs_reparse_init(struct ntfs_sb_info *sbi); |
| 592 | int ntfs_objid_init(struct ntfs_sb_info *sbi); |
| 593 | int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); |
| 594 | int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, |
| 595 | const struct MFT_REF *ref); |
| 596 | int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, |
| 597 | const struct MFT_REF *ref); |
| 598 | void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); |
| 599 | int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim); |
| 600 | |
| 601 | /* globals from index.c */ |
| 602 | int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); |
| 603 | void fnd_clear(struct ntfs_fnd *fnd); |
| 604 | static inline struct ntfs_fnd *fnd_get(void) |
| 605 | { |
Kari Argillander | 195c52b | 2021-08-24 21:37:07 +0300 | [diff] [blame^] | 606 | return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 607 | } |
| 608 | static inline void fnd_put(struct ntfs_fnd *fnd) |
| 609 | { |
| 610 | if (fnd) { |
| 611 | fnd_clear(fnd); |
Kari Argillander | 195c52b | 2021-08-24 21:37:07 +0300 | [diff] [blame^] | 612 | kfree(fnd); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 613 | } |
| 614 | } |
| 615 | void indx_clear(struct ntfs_index *idx); |
| 616 | int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, |
| 617 | const struct ATTRIB *attr, enum index_mutex_classed type); |
| 618 | struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, |
| 619 | struct ATTRIB **attr, struct mft_inode **mi); |
| 620 | int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, |
| 621 | struct indx_node **node); |
| 622 | int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, |
| 623 | const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, |
| 624 | const void *param, int *diff, struct NTFS_DE **entry, |
| 625 | struct ntfs_fnd *fnd); |
| 626 | int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, |
| 627 | const struct INDEX_ROOT *root, struct NTFS_DE **entry, |
| 628 | struct ntfs_fnd *fnd); |
| 629 | int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, |
| 630 | const struct INDEX_ROOT *root, struct NTFS_DE **entry, |
| 631 | size_t *off, struct ntfs_fnd *fnd); |
| 632 | int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, |
| 633 | const struct NTFS_DE *new_de, const void *param, |
| 634 | struct ntfs_fnd *fnd); |
| 635 | int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, |
| 636 | const void *key, u32 key_len, const void *param); |
| 637 | int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, |
| 638 | const struct ATTR_FILE_NAME *fname, |
| 639 | const struct NTFS_DUP_INFO *dup, int sync); |
| 640 | |
| 641 | /* globals from inode.c */ |
| 642 | struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, |
| 643 | const struct cpu_str *name); |
| 644 | int ntfs_set_size(struct inode *inode, u64 new_size); |
| 645 | int reset_log_file(struct inode *inode); |
| 646 | int ntfs_get_block(struct inode *inode, sector_t vbn, |
| 647 | struct buffer_head *bh_result, int create); |
| 648 | int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); |
| 649 | int ntfs_sync_inode(struct inode *inode); |
| 650 | int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, |
| 651 | struct inode *i2); |
| 652 | int inode_write_data(struct inode *inode, const void *data, size_t bytes); |
| 653 | struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, |
| 654 | struct inode *dir, struct dentry *dentry, |
| 655 | const struct cpu_str *uni, umode_t mode, |
| 656 | dev_t dev, const char *symname, u32 size, |
| 657 | struct ntfs_fnd *fnd); |
| 658 | int ntfs_link_inode(struct inode *inode, struct dentry *dentry); |
| 659 | int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); |
| 660 | void ntfs_evict_inode(struct inode *inode); |
| 661 | extern const struct inode_operations ntfs_link_inode_operations; |
| 662 | extern const struct address_space_operations ntfs_aops; |
| 663 | extern const struct address_space_operations ntfs_aops_cmpr; |
| 664 | |
| 665 | /* globals from name_i.c*/ |
| 666 | int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, |
| 667 | const struct cpu_str *uni); |
| 668 | struct dentry *ntfs3_get_parent(struct dentry *child); |
| 669 | |
| 670 | extern const struct inode_operations ntfs_dir_inode_operations; |
| 671 | extern const struct inode_operations ntfs_special_inode_operations; |
| 672 | |
| 673 | /* globals from record.c */ |
| 674 | int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); |
| 675 | void mi_put(struct mft_inode *mi); |
| 676 | int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); |
| 677 | int mi_read(struct mft_inode *mi, bool is_mft); |
| 678 | struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); |
| 679 | // TODO: id? |
| 680 | struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, |
| 681 | enum ATTR_TYPE type, const __le16 *name, |
| 682 | size_t name_len, const __le16 *id); |
| 683 | static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, |
| 684 | struct ATTR_LIST_ENTRY *le) |
| 685 | { |
| 686 | return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, |
| 687 | &le->id); |
| 688 | } |
| 689 | int mi_write(struct mft_inode *mi, int wait); |
| 690 | int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, |
| 691 | __le16 flags, bool is_mft); |
| 692 | void mi_mark_free(struct mft_inode *mi); |
| 693 | struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, |
| 694 | const __le16 *name, u8 name_len, u32 asize, |
| 695 | u16 name_off); |
| 696 | |
| 697 | bool mi_remove_attr(struct mft_inode *mi, struct ATTRIB *attr); |
| 698 | bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); |
| 699 | int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, |
| 700 | struct runs_tree *run, CLST len); |
| 701 | static inline bool mi_is_ref(const struct mft_inode *mi, |
| 702 | const struct MFT_REF *ref) |
| 703 | { |
| 704 | if (le32_to_cpu(ref->low) != mi->rno) |
| 705 | return false; |
| 706 | if (ref->seq != mi->mrec->seq) |
| 707 | return false; |
| 708 | |
| 709 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER |
| 710 | return le16_to_cpu(ref->high) == (mi->rno >> 32); |
| 711 | #else |
| 712 | return !ref->high; |
| 713 | #endif |
| 714 | } |
| 715 | |
| 716 | static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) |
| 717 | { |
| 718 | ref->low = cpu_to_le32(mi->rno); |
| 719 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER |
| 720 | ref->high = cpu_to_le16(mi->rno >> 32); |
| 721 | #else |
| 722 | ref->high = 0; |
| 723 | #endif |
| 724 | ref->seq = mi->mrec->seq; |
| 725 | } |
| 726 | |
| 727 | /* globals from run.c */ |
| 728 | bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, |
| 729 | CLST *len, size_t *index); |
| 730 | void run_truncate(struct runs_tree *run, CLST vcn); |
| 731 | void run_truncate_head(struct runs_tree *run, CLST vcn); |
| 732 | void run_truncate_around(struct runs_tree *run, CLST vcn); |
| 733 | bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *Index); |
| 734 | bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, |
| 735 | bool is_mft); |
| 736 | bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); |
| 737 | bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, |
| 738 | CLST *lcn, CLST *len); |
| 739 | bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); |
| 740 | |
| 741 | int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, |
| 742 | u32 run_buf_size, CLST *packed_vcns); |
| 743 | int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, |
| 744 | CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, |
| 745 | u32 run_buf_size); |
| 746 | |
| 747 | #ifdef NTFS3_CHECK_FREE_CLST |
| 748 | int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, |
| 749 | CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, |
| 750 | u32 run_buf_size); |
| 751 | #else |
| 752 | #define run_unpack_ex run_unpack |
| 753 | #endif |
| 754 | int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); |
| 755 | |
| 756 | /* globals from super.c */ |
| 757 | void *ntfs_set_shared(void *ptr, u32 bytes); |
| 758 | void *ntfs_put_shared(void *ptr); |
| 759 | void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); |
| 760 | int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); |
| 761 | |
| 762 | /* globals from bitmap.c*/ |
| 763 | int __init ntfs3_init_bitmap(void); |
| 764 | void ntfs3_exit_bitmap(void); |
| 765 | void wnd_close(struct wnd_bitmap *wnd); |
| 766 | static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) |
| 767 | { |
| 768 | return wnd->total_zeroes; |
| 769 | } |
| 770 | int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); |
| 771 | int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
| 772 | int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
| 773 | bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
| 774 | bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
| 775 | |
| 776 | /* Possible values for 'flags' 'wnd_find' */ |
| 777 | #define BITMAP_FIND_MARK_AS_USED 0x01 |
| 778 | #define BITMAP_FIND_FULL 0x02 |
| 779 | size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, |
| 780 | size_t flags, size_t *allocated); |
| 781 | int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); |
| 782 | void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); |
| 783 | int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); |
| 784 | |
| 785 | /* globals from upcase.c */ |
| 786 | int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, |
| 787 | const u16 *upcase, bool bothcase); |
| 788 | int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, |
| 789 | const u16 *upcase, bool bothcase); |
| 790 | |
| 791 | /* globals from xattr.c */ |
| 792 | #ifdef CONFIG_NTFS3_FS_POSIX_ACL |
| 793 | struct posix_acl *ntfs_get_acl(struct inode *inode, int type); |
| 794 | int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, |
| 795 | struct posix_acl *acl, int type); |
| 796 | int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, |
| 797 | struct inode *dir); |
| 798 | #else |
| 799 | #define ntfs_get_acl NULL |
| 800 | #define ntfs_set_acl NULL |
| 801 | #endif |
| 802 | |
| 803 | int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode); |
| 804 | int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode, |
| 805 | int mask); |
| 806 | ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
| 807 | extern const struct xattr_handler *ntfs_xattr_handlers[]; |
| 808 | |
| 809 | int ntfs_save_wsl_perm(struct inode *inode); |
| 810 | void ntfs_get_wsl_perm(struct inode *inode); |
| 811 | |
| 812 | /* globals from lznt.c */ |
| 813 | struct lznt *get_lznt_ctx(int level); |
| 814 | size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, |
| 815 | void *compressed, size_t compressed_size, |
| 816 | struct lznt *ctx); |
| 817 | ssize_t decompress_lznt(const void *compressed, size_t compressed_size, |
| 818 | void *uncompressed, size_t uncompressed_size); |
| 819 | |
| 820 | static inline bool is_ntfs3(struct ntfs_sb_info *sbi) |
| 821 | { |
| 822 | return sbi->volume.major_ver >= 3; |
| 823 | } |
| 824 | |
| 825 | /*(sb->s_flags & SB_ACTIVE)*/ |
| 826 | static inline bool is_mounted(struct ntfs_sb_info *sbi) |
| 827 | { |
| 828 | return !!sbi->sb->s_root; |
| 829 | } |
| 830 | |
| 831 | static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) |
| 832 | { |
| 833 | return rno < MFT_REC_FREE || rno == sbi->objid_no || |
| 834 | rno == sbi->quota_no || rno == sbi->reparse_no || |
| 835 | rno == sbi->usn_jrnl_no; |
| 836 | } |
| 837 | |
| 838 | static inline void ntfs_unmap_page(struct page *page) |
| 839 | { |
| 840 | kunmap(page); |
| 841 | put_page(page); |
| 842 | } |
| 843 | |
| 844 | static inline struct page *ntfs_map_page(struct address_space *mapping, |
| 845 | unsigned long index) |
| 846 | { |
| 847 | struct page *page = read_mapping_page(mapping, index, NULL); |
| 848 | |
| 849 | if (!IS_ERR(page)) { |
| 850 | kmap(page); |
| 851 | if (!PageError(page)) |
| 852 | return page; |
| 853 | ntfs_unmap_page(page); |
| 854 | return ERR_PTR(-EIO); |
| 855 | } |
| 856 | return page; |
| 857 | } |
| 858 | |
| 859 | static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) |
| 860 | { |
| 861 | return wnd->zone_bit; |
| 862 | } |
| 863 | |
| 864 | static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) |
| 865 | { |
| 866 | return wnd->zone_end - wnd->zone_bit; |
| 867 | } |
| 868 | |
| 869 | static inline void run_init(struct runs_tree *run) |
| 870 | { |
| 871 | run->runs = NULL; |
| 872 | run->count = 0; |
| 873 | run->allocated = 0; |
| 874 | } |
| 875 | |
| 876 | static inline struct runs_tree *run_alloc(void) |
| 877 | { |
Kari Argillander | 195c52b | 2021-08-24 21:37:07 +0300 | [diff] [blame^] | 878 | return kzalloc(sizeof(struct runs_tree), GFP_NOFS); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 879 | } |
| 880 | |
| 881 | static inline void run_close(struct runs_tree *run) |
| 882 | { |
Kari Argillander | 195c52b | 2021-08-24 21:37:07 +0300 | [diff] [blame^] | 883 | kvfree(run->runs); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 884 | memset(run, 0, sizeof(*run)); |
| 885 | } |
| 886 | |
| 887 | static inline void run_free(struct runs_tree *run) |
| 888 | { |
| 889 | if (run) { |
Kari Argillander | 195c52b | 2021-08-24 21:37:07 +0300 | [diff] [blame^] | 890 | kvfree(run->runs); |
| 891 | kfree(run); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 892 | } |
| 893 | } |
| 894 | |
| 895 | static inline bool run_is_empty(struct runs_tree *run) |
| 896 | { |
| 897 | return !run->count; |
| 898 | } |
| 899 | |
| 900 | /* NTFS uses quad aligned bitmaps */ |
| 901 | static inline size_t bitmap_size(size_t bits) |
| 902 | { |
Kari Argillander | fa3cacf | 2021-08-26 11:56:29 +0300 | [diff] [blame] | 903 | return ALIGN((bits + 7) >> 3, 8); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 904 | } |
| 905 | |
| 906 | #define _100ns2seconds 10000000 |
| 907 | #define SecondsToStartOf1970 0x00000002B6109100 |
| 908 | |
| 909 | #define NTFS_TIME_GRAN 100 |
| 910 | |
| 911 | /* |
| 912 | * kernel2nt |
| 913 | * |
| 914 | * converts in-memory kernel timestamp into nt time |
| 915 | */ |
| 916 | static inline __le64 kernel2nt(const struct timespec64 *ts) |
| 917 | { |
| 918 | // 10^7 units of 100 nanoseconds one second |
| 919 | return cpu_to_le64(_100ns2seconds * |
| 920 | (ts->tv_sec + SecondsToStartOf1970) + |
| 921 | ts->tv_nsec / NTFS_TIME_GRAN); |
| 922 | } |
| 923 | |
| 924 | /* |
| 925 | * nt2kernel |
| 926 | * |
| 927 | * converts on-disk nt time into kernel timestamp |
| 928 | */ |
| 929 | static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) |
| 930 | { |
| 931 | u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; |
| 932 | |
| 933 | // WARNING: do_div changes its first argument(!) |
| 934 | ts->tv_nsec = do_div(t, _100ns2seconds) * 100; |
| 935 | ts->tv_sec = t; |
| 936 | } |
| 937 | |
| 938 | static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) |
| 939 | { |
| 940 | return sb->s_fs_info; |
| 941 | } |
| 942 | |
| 943 | /* Align up on cluster boundary */ |
| 944 | static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) |
| 945 | { |
| 946 | return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; |
| 947 | } |
| 948 | |
| 949 | /* Align up on cluster boundary */ |
| 950 | static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) |
| 951 | { |
| 952 | return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); |
| 953 | } |
| 954 | |
| 955 | static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) |
| 956 | { |
| 957 | return (size + sbi->cluster_mask) >> sbi->cluster_bits; |
| 958 | } |
| 959 | |
| 960 | static inline u64 bytes_to_block(const struct super_block *sb, u64 size) |
| 961 | { |
| 962 | return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; |
| 963 | } |
| 964 | |
| 965 | static inline struct buffer_head *ntfs_bread(struct super_block *sb, |
| 966 | sector_t block) |
| 967 | { |
| 968 | struct buffer_head *bh = sb_bread(sb, block); |
| 969 | |
| 970 | if (bh) |
| 971 | return bh; |
| 972 | |
| 973 | ntfs_err(sb, "failed to read volume at offset 0x%llx", |
| 974 | (u64)block << sb->s_blocksize_bits); |
| 975 | return NULL; |
| 976 | } |
| 977 | |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 978 | static inline struct ntfs_inode *ntfs_i(struct inode *inode) |
| 979 | { |
| 980 | return container_of(inode, struct ntfs_inode, vfs_inode); |
| 981 | } |
| 982 | |
| 983 | static inline bool is_compressed(const struct ntfs_inode *ni) |
| 984 | { |
| 985 | return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || |
| 986 | (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); |
| 987 | } |
| 988 | |
| 989 | static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) |
| 990 | { |
| 991 | return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); |
| 992 | } |
| 993 | |
| 994 | /* bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ |
| 995 | static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) |
| 996 | { |
| 997 | ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; |
| 998 | } |
| 999 | |
| 1000 | static inline bool is_dedup(const struct ntfs_inode *ni) |
| 1001 | { |
| 1002 | return ni->ni_flags & NI_FLAG_DEDUPLICATED; |
| 1003 | } |
| 1004 | |
| 1005 | static inline bool is_encrypted(const struct ntfs_inode *ni) |
| 1006 | { |
| 1007 | return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; |
| 1008 | } |
| 1009 | |
| 1010 | static inline bool is_sparsed(const struct ntfs_inode *ni) |
| 1011 | { |
| 1012 | return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; |
| 1013 | } |
| 1014 | |
| 1015 | static inline int is_resident(struct ntfs_inode *ni) |
| 1016 | { |
| 1017 | return ni->ni_flags & NI_FLAG_RESIDENT; |
| 1018 | } |
| 1019 | |
| 1020 | static inline void le16_sub_cpu(__le16 *var, u16 val) |
| 1021 | { |
| 1022 | *var = cpu_to_le16(le16_to_cpu(*var) - val); |
| 1023 | } |
| 1024 | |
| 1025 | static inline void le32_sub_cpu(__le32 *var, u32 val) |
| 1026 | { |
| 1027 | *var = cpu_to_le32(le32_to_cpu(*var) - val); |
| 1028 | } |
| 1029 | |
| 1030 | static inline void nb_put(struct ntfs_buffers *nb) |
| 1031 | { |
| 1032 | u32 i, nbufs = nb->nbufs; |
| 1033 | |
| 1034 | if (!nbufs) |
| 1035 | return; |
| 1036 | |
| 1037 | for (i = 0; i < nbufs; i++) |
| 1038 | put_bh(nb->bh[i]); |
| 1039 | nb->nbufs = 0; |
| 1040 | } |
| 1041 | |
| 1042 | static inline void put_indx_node(struct indx_node *in) |
| 1043 | { |
| 1044 | if (!in) |
| 1045 | return; |
| 1046 | |
Kari Argillander | 195c52b | 2021-08-24 21:37:07 +0300 | [diff] [blame^] | 1047 | kfree(in->index); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 1048 | nb_put(&in->nb); |
Kari Argillander | 195c52b | 2021-08-24 21:37:07 +0300 | [diff] [blame^] | 1049 | kfree(in); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 1050 | } |
| 1051 | |
| 1052 | static inline void mi_clear(struct mft_inode *mi) |
| 1053 | { |
| 1054 | nb_put(&mi->nb); |
Kari Argillander | 195c52b | 2021-08-24 21:37:07 +0300 | [diff] [blame^] | 1055 | kfree(mi->mrec); |
Konstantin Komarov | 4534a70 | 2021-08-13 17:21:29 +0300 | [diff] [blame] | 1056 | mi->mrec = NULL; |
| 1057 | } |
| 1058 | |
| 1059 | static inline void ni_lock(struct ntfs_inode *ni) |
| 1060 | { |
| 1061 | mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); |
| 1062 | } |
| 1063 | |
| 1064 | static inline void ni_lock_dir(struct ntfs_inode *ni) |
| 1065 | { |
| 1066 | mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); |
| 1067 | } |
| 1068 | |
| 1069 | static inline void ni_unlock(struct ntfs_inode *ni) |
| 1070 | { |
| 1071 | mutex_unlock(&ni->ni_lock); |
| 1072 | } |
| 1073 | |
| 1074 | static inline int ni_trylock(struct ntfs_inode *ni) |
| 1075 | { |
| 1076 | return mutex_trylock(&ni->ni_lock); |
| 1077 | } |
| 1078 | |
| 1079 | static inline int attr_load_runs_attr(struct ntfs_inode *ni, |
| 1080 | struct ATTRIB *attr, |
| 1081 | struct runs_tree *run, CLST vcn) |
| 1082 | { |
| 1083 | return attr_load_runs_vcn(ni, attr->type, attr_name(attr), |
| 1084 | attr->name_len, run, vcn); |
| 1085 | } |
| 1086 | |
| 1087 | static inline void le64_sub_cpu(__le64 *var, u64 val) |
| 1088 | { |
| 1089 | *var = cpu_to_le64(le64_to_cpu(*var) - val); |
| 1090 | } |
Kari Argillander | 87790b6 | 2021-08-16 15:01:56 +0300 | [diff] [blame] | 1091 | |
| 1092 | #endif /* _LINUX_NTFS3_NTFS_FS_H */ |