1/** 2 * f2fs_fs.h 3 * 4 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5 * http://www.samsung.com/ 6 * 7 * Dual licensed under the GPL or LGPL version 2 licenses. 8 * 9 * The byteswap codes are copied from: 10 * samba_3_master/lib/ccan/endian/endian.h under LGPL 2.1 11 */ 12#ifndef __F2FS_FS_H__ 13#define __F2FS_FS_H__ 14 15#ifdef HAVE_CONFIG_H 16#include <config.h> 17#endif 18 19#ifdef __ANDROID__ 20#define WITH_ANDROID 21#endif 22 23#ifdef WITH_ANDROID 24#include <android_config.h> 25#else 26#define WITH_DUMP 27#define WITH_DEFRAG 28#define WITH_RESIZE 29#define WITH_SLOAD 30#endif 31 32#include <inttypes.h> 33#ifdef HAVE_LINUX_TYPES_H 34#include <linux/types.h> 35#endif 36#include <sys/types.h> 37 38#ifdef HAVE_LINUX_BLKZONED_H 39#include <linux/blkzoned.h> 40#endif 41 42#ifdef HAVE_LIBSELINUX 43#include <selinux/selinux.h> 44#include <selinux/label.h> 45#endif 46 47#ifdef UNUSED 48#elif defined(__GNUC__) 49# define UNUSED(x) UNUSED_ ## x __attribute__((unused)) 50#elif defined(__LCLINT__) 51# define UNUSED(x) x 52#else 53# define UNUSED(x) x 54#endif 55 56#ifdef ANDROID_WINDOWS_HOST 57#undef HAVE_LINUX_TYPES_H 58typedef uint64_t u_int64_t; 59typedef uint32_t u_int32_t; 60typedef uint16_t u_int16_t; 61typedef uint8_t u_int8_t; 62#endif 63 64typedef u_int64_t u64; 65typedef u_int32_t u32; 66typedef u_int16_t u16; 67typedef u_int8_t u8; 68typedef u32 block_t; 69typedef u32 nid_t; 70#ifndef bool 71typedef u8 bool; 72#endif 73typedef unsigned long pgoff_t; 74typedef unsigned short umode_t; 75 76#ifndef HAVE_LINUX_TYPES_H 77typedef u8 __u8; 78typedef u16 __u16; 79typedef u32 __u32; 80typedef u64 __u64; 81typedef u16 __le16; 82typedef u32 __le32; 83typedef u64 __le64; 84typedef u16 __be16; 85typedef u32 __be32; 86typedef u64 __be64; 87#endif 88 89#if HAVE_BYTESWAP_H 90#include <byteswap.h> 91#else 92/** 93 * bswap_16 - reverse bytes in a uint16_t value. 94 * @val: value whose bytes to swap. 95 * 96 * Example: 97 * // Output contains "1024 is 4 as two bytes reversed" 98 * printf("1024 is %u as two bytes reversed\n", bswap_16(1024)); 99 */ 100static inline uint16_t bswap_16(uint16_t val) 101{ 102 return ((val & (uint16_t)0x00ffU) << 8) 103 | ((val & (uint16_t)0xff00U) >> 8); 104} 105 106/** 107 * bswap_32 - reverse bytes in a uint32_t value. 108 * @val: value whose bytes to swap. 109 * 110 * Example: 111 * // Output contains "1024 is 262144 as four bytes reversed" 112 * printf("1024 is %u as four bytes reversed\n", bswap_32(1024)); 113 */ 114static inline uint32_t bswap_32(uint32_t val) 115{ 116 return ((val & (uint32_t)0x000000ffUL) << 24) 117 | ((val & (uint32_t)0x0000ff00UL) << 8) 118 | ((val & (uint32_t)0x00ff0000UL) >> 8) 119 | ((val & (uint32_t)0xff000000UL) >> 24); 120} 121#endif /* !HAVE_BYTESWAP_H */ 122 123#if defined HAVE_DECL_BSWAP_64 && !HAVE_DECL_BSWAP_64 124/** 125 * bswap_64 - reverse bytes in a uint64_t value. 126 * @val: value whose bytes to swap. 127 * 128 * Example: 129 * // Output contains "1024 is 1125899906842624 as eight bytes reversed" 130 * printf("1024 is %llu as eight bytes reversed\n", 131 * (unsigned long long)bswap_64(1024)); 132 */ 133static inline uint64_t bswap_64(uint64_t val) 134{ 135 return ((val & (uint64_t)0x00000000000000ffULL) << 56) 136 | ((val & (uint64_t)0x000000000000ff00ULL) << 40) 137 | ((val & (uint64_t)0x0000000000ff0000ULL) << 24) 138 | ((val & (uint64_t)0x00000000ff000000ULL) << 8) 139 | ((val & (uint64_t)0x000000ff00000000ULL) >> 8) 140 | ((val & (uint64_t)0x0000ff0000000000ULL) >> 24) 141 | ((val & (uint64_t)0x00ff000000000000ULL) >> 40) 142 | ((val & (uint64_t)0xff00000000000000ULL) >> 56); 143} 144#endif 145 146#if __BYTE_ORDER == __LITTLE_ENDIAN 147#define le16_to_cpu(x) ((__u16)(x)) 148#define le32_to_cpu(x) ((__u32)(x)) 149#define le64_to_cpu(x) ((__u64)(x)) 150#define cpu_to_le16(x) ((__u16)(x)) 151#define cpu_to_le32(x) ((__u32)(x)) 152#define cpu_to_le64(x) ((__u64)(x)) 153#elif __BYTE_ORDER == __BIG_ENDIAN 154#define le16_to_cpu(x) bswap_16(x) 155#define le32_to_cpu(x) bswap_32(x) 156#define le64_to_cpu(x) bswap_64(x) 157#define cpu_to_le16(x) bswap_16(x) 158#define cpu_to_le32(x) bswap_32(x) 159#define cpu_to_le64(x) bswap_64(x) 160#endif 161 162#define typecheck(type,x) \ 163 ({ type __dummy; \ 164 typeof(x) __dummy2; \ 165 (void)(&__dummy == &__dummy2); \ 166 1; \ 167 }) 168 169#define NULL_SEGNO ((unsigned int)~0) 170 171/* 172 * Debugging interfaces 173 */ 174#define FIX_MSG(fmt, ...) \ 175 do { \ 176 printf("[FIX] (%s:%4d) ", __func__, __LINE__); \ 177 printf(" --> "fmt"\n", ##__VA_ARGS__); \ 178 } while (0) 179 180#define ASSERT_MSG(fmt, ...) \ 181 do { \ 182 printf("[ASSERT] (%s:%4d) ", __func__, __LINE__); \ 183 printf(" --> "fmt"\n", ##__VA_ARGS__); \ 184 c.bug_on = 1; \ 185 } while (0) 186 187#define ASSERT(exp) \ 188 do { \ 189 if (!(exp)) { \ 190 printf("[ASSERT] (%s:%4d) " #exp"\n", \ 191 __func__, __LINE__); \ 192 exit(-1); \ 193 } \ 194 } while (0) 195 196#define ERR_MSG(fmt, ...) \ 197 do { \ 198 printf("[%s:%d] " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 199 } while (0) 200 201#define MSG(n, fmt, ...) \ 202 do { \ 203 if (c.dbg_lv >= n) { \ 204 printf(fmt, ##__VA_ARGS__); \ 205 } \ 206 } while (0) 207 208#define DBG(n, fmt, ...) \ 209 do { \ 210 if (c.dbg_lv >= n) { \ 211 printf("[%s:%4d] " fmt, \ 212 __func__, __LINE__, ##__VA_ARGS__); \ 213 } \ 214 } while (0) 215 216/* Display on console */ 217#define DISP(fmt, ptr, member) \ 218 do { \ 219 printf("%-30s" fmt, #member, ((ptr)->member)); \ 220 } while (0) 221 222#define DISP_u16(ptr, member) \ 223 do { \ 224 assert(sizeof((ptr)->member) == 2); \ 225 printf("%-30s" "\t\t[0x%8x : %u]\n", \ 226 #member, le16_to_cpu(((ptr)->member)), \ 227 le16_to_cpu(((ptr)->member))); \ 228 } while (0) 229 230#define DISP_u32(ptr, member) \ 231 do { \ 232 assert(sizeof((ptr)->member) <= 4); \ 233 printf("%-30s" "\t\t[0x%8x : %u]\n", \ 234 #member, le32_to_cpu(((ptr)->member)), \ 235 le32_to_cpu(((ptr)->member))); \ 236 } while (0) 237 238#define DISP_u64(ptr, member) \ 239 do { \ 240 assert(sizeof((ptr)->member) == 8); \ 241 printf("%-30s" "\t\t[0x%8llx : %llu]\n", \ 242 #member, le64_to_cpu(((ptr)->member)), \ 243 le64_to_cpu(((ptr)->member))); \ 244 } while (0) 245 246#define DISP_utf(ptr, member) \ 247 do { \ 248 printf("%-30s" "\t\t[%s]\n", #member, ((ptr)->member)); \ 249 } while (0) 250 251/* Display to buffer */ 252#define BUF_DISP_u32(buf, data, len, ptr, member) \ 253 do { \ 254 assert(sizeof((ptr)->member) <= 4); \ 255 snprintf(buf, len, #member); \ 256 snprintf(data, len, "0x%x : %u", ((ptr)->member), \ 257 ((ptr)->member)); \ 258 } while (0) 259 260#define BUF_DISP_u64(buf, data, len, ptr, member) \ 261 do { \ 262 assert(sizeof((ptr)->member) == 8); \ 263 snprintf(buf, len, #member); \ 264 snprintf(data, len, "0x%llx : %llu", ((ptr)->member), \ 265 ((ptr)->member)); \ 266 } while (0) 267 268#define BUF_DISP_utf(buf, data, len, ptr, member) \ 269 snprintf(buf, len, #member) 270 271/* these are defined in kernel */ 272#ifndef PAGE_SIZE 273#define PAGE_SIZE 4096 274#endif 275#define PAGE_CACHE_SIZE 4096 276#define BITS_PER_BYTE 8 277#define F2FS_SUPER_MAGIC 0xF2F52010 /* F2FS Magic Number */ 278#define CHECKSUM_OFFSET 4092 279#define MAX_PATH_LEN 64 280#define MAX_DEVICES 8 281 282#define F2FS_BYTES_TO_BLK(bytes) ((bytes) >> F2FS_BLKSIZE_BITS) 283#define F2FS_BLKSIZE_BITS 12 284 285/* for mkfs */ 286#define F2FS_NUMBER_OF_CHECKPOINT_PACK 2 287#define DEFAULT_SECTOR_SIZE 512 288#define DEFAULT_SECTORS_PER_BLOCK 8 289#define DEFAULT_BLOCKS_PER_SEGMENT 512 290#define DEFAULT_SEGMENTS_PER_SECTION 1 291 292#define VERSION_LEN 256 293 294enum f2fs_config_func { 295 MKFS, 296 FSCK, 297 DUMP, 298 DEFRAG, 299 RESIZE, 300 SLOAD, 301}; 302 303struct device_info { 304 char *path; 305 int32_t fd; 306 u_int32_t sector_size; 307 u_int64_t total_sectors; /* got by get_device_info */ 308 u_int64_t start_blkaddr; 309 u_int64_t end_blkaddr; 310 u_int32_t total_segments; 311 312 /* to handle zone block devices */ 313 int zoned_model; 314 u_int32_t nr_zones; 315 u_int32_t nr_rnd_zones; 316 size_t zone_blocks; 317}; 318 319struct f2fs_configuration { 320 u_int32_t reserved_segments; 321 u_int32_t new_reserved_segments; 322 int sparse_mode; 323 int zoned_mode; 324 int zoned_model; 325 size_t zone_blocks; 326 double overprovision; 327 double new_overprovision; 328 u_int32_t cur_seg[6]; 329 u_int32_t segs_per_sec; 330 u_int32_t secs_per_zone; 331 u_int32_t segs_per_zone; 332 u_int32_t start_sector; 333 u_int32_t total_segments; 334 u_int32_t sector_size; 335 u_int64_t device_size; 336 u_int64_t total_sectors; 337 u_int64_t wanted_total_sectors; 338 u_int64_t wanted_sector_size; 339 u_int64_t target_sectors; 340 u_int32_t sectors_per_blk; 341 u_int32_t blks_per_seg; 342 __u8 init_version[VERSION_LEN + 1]; 343 __u8 sb_version[VERSION_LEN + 1]; 344 __u8 version[VERSION_LEN + 1]; 345 char *vol_label; 346 int heap; 347 int32_t kd; 348 int32_t dump_fd; 349 struct device_info devices[MAX_DEVICES]; 350 int ndevs; 351 char *extension_list; 352 const char *rootdev_name; 353 int dbg_lv; 354 int show_dentry; 355 int trim; 356 int trimmed; 357 int func; 358 void *private; 359 int dry_run; 360 int fix_on; 361 int bug_on; 362 int auto_fix; 363 int preen_mode; 364 int ro; 365 int preserve_limits; /* preserve quota limits */ 366 __le32 feature; /* defined features */ 367 368 /* defragmentation parameters */ 369 int defrag_shrink; 370 u_int64_t defrag_start; 371 u_int64_t defrag_len; 372 u_int64_t defrag_target; 373 374 /* sload parameters */ 375 char *from_dir; 376 char *mount_point; 377 char *target_out_dir; 378 char *fs_config_file; 379 time_t fixed_time; 380#ifdef HAVE_LIBSELINUX 381 struct selinux_opt seopt_file[8]; 382 int nr_opt; 383#endif 384 385 /* precomputed fs UUID checksum for seeding other checksums */ 386 u_int32_t chksum_seed; 387}; 388 389#ifdef CONFIG_64BIT 390#define BITS_PER_LONG 64 391#else 392#define BITS_PER_LONG 32 393#endif 394 395#define BIT_MASK(nr) (1 << (nr % BITS_PER_LONG)) 396#define BIT_WORD(nr) (nr / BITS_PER_LONG) 397 398#define set_sb_le64(member, val) (sb->member = cpu_to_le64(val)) 399#define set_sb_le32(member, val) (sb->member = cpu_to_le32(val)) 400#define set_sb_le16(member, val) (sb->member = cpu_to_le16(val)) 401#define get_sb_le64(member) le64_to_cpu(sb->member) 402#define get_sb_le32(member) le32_to_cpu(sb->member) 403#define get_sb_le16(member) le16_to_cpu(sb->member) 404#define get_newsb_le64(member) le64_to_cpu(new_sb->member) 405#define get_newsb_le32(member) le32_to_cpu(new_sb->member) 406#define get_newsb_le16(member) le16_to_cpu(new_sb->member) 407 408#define set_sb(member, val) \ 409 do { \ 410 typeof(sb->member) t; \ 411 switch (sizeof(t)) { \ 412 case 8: set_sb_le64(member, val); break; \ 413 case 4: set_sb_le32(member, val); break; \ 414 case 2: set_sb_le16(member, val); break; \ 415 } \ 416 } while(0) 417 418#define get_sb(member) \ 419 ({ \ 420 typeof(sb->member) t; \ 421 switch (sizeof(t)) { \ 422 case 8: t = get_sb_le64(member); break; \ 423 case 4: t = get_sb_le32(member); break; \ 424 case 2: t = get_sb_le16(member); break; \ 425 } \ 426 t; \ 427 }) 428#define get_newsb(member) \ 429 ({ \ 430 typeof(new_sb->member) t; \ 431 switch (sizeof(t)) { \ 432 case 8: t = get_newsb_le64(member); break; \ 433 case 4: t = get_newsb_le32(member); break; \ 434 case 2: t = get_newsb_le16(member); break; \ 435 } \ 436 t; \ 437 }) 438 439#define set_cp_le64(member, val) (cp->member = cpu_to_le64(val)) 440#define set_cp_le32(member, val) (cp->member = cpu_to_le32(val)) 441#define set_cp_le16(member, val) (cp->member = cpu_to_le16(val)) 442#define get_cp_le64(member) le64_to_cpu(cp->member) 443#define get_cp_le32(member) le32_to_cpu(cp->member) 444#define get_cp_le16(member) le16_to_cpu(cp->member) 445 446#define set_cp(member, val) \ 447 do { \ 448 typeof(cp->member) t; \ 449 switch (sizeof(t)) { \ 450 case 8: set_cp_le64(member, val); break; \ 451 case 4: set_cp_le32(member, val); break; \ 452 case 2: set_cp_le16(member, val); break; \ 453 } \ 454 } while(0) 455 456#define get_cp(member) \ 457 ({ \ 458 typeof(cp->member) t; \ 459 switch (sizeof(t)) { \ 460 case 8: t = get_cp_le64(member); break; \ 461 case 4: t = get_cp_le32(member); break; \ 462 case 2: t = get_cp_le16(member); break; \ 463 } \ 464 t; \ 465 }) 466 467/* 468 * Copied from include/linux/kernel.h 469 */ 470#define __round_mask(x, y) ((__typeof__(x))((y)-1)) 471#define round_down(x, y) ((x) & ~__round_mask(x, y)) 472 473#define min(x, y) ({ \ 474 typeof(x) _min1 = (x); \ 475 typeof(y) _min2 = (y); \ 476 (void) (&_min1 == &_min2); \ 477 _min1 < _min2 ? _min1 : _min2; }) 478 479#define max(x, y) ({ \ 480 typeof(x) _max1 = (x); \ 481 typeof(y) _max2 = (y); \ 482 (void) (&_max1 == &_max2); \ 483 _max1 > _max2 ? _max1 : _max2; }) 484 485/* 486 * Copied from fs/f2fs/f2fs.h 487 */ 488#define NR_CURSEG_DATA_TYPE (3) 489#define NR_CURSEG_NODE_TYPE (3) 490#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) 491 492enum { 493 CURSEG_HOT_DATA = 0, /* directory entry blocks */ 494 CURSEG_WARM_DATA, /* data blocks */ 495 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ 496 CURSEG_HOT_NODE, /* direct node blocks of directory files */ 497 CURSEG_WARM_NODE, /* direct node blocks of normal files */ 498 CURSEG_COLD_NODE, /* indirect node blocks */ 499 NO_CHECK_TYPE 500}; 501 502#define F2FS_MIN_SEGMENTS 9 /* SB + 2 (CP + SIT + NAT) + SSA + MAIN */ 503 504/* 505 * Copied from fs/f2fs/segment.h 506 */ 507#define GET_SUM_TYPE(footer) ((footer)->entry_type) 508#define SET_SUM_TYPE(footer, type) ((footer)->entry_type = type) 509 510/* 511 * Copied from include/linux/f2fs_sb.h 512 */ 513#define F2FS_SUPER_OFFSET 1024 /* byte-size offset */ 514#define F2FS_MIN_LOG_SECTOR_SIZE 9 /* 9 bits for 512 bytes */ 515#define F2FS_MAX_LOG_SECTOR_SIZE 12 /* 12 bits for 4096 bytes */ 516#define F2FS_BLKSIZE 4096 /* support only 4KB block */ 517#define F2FS_MAX_EXTENSION 64 /* # of extension entries */ 518#define F2FS_BLK_ALIGN(x) (((x) + F2FS_BLKSIZE - 1) / F2FS_BLKSIZE) 519 520#define NULL_ADDR 0x0U 521#define NEW_ADDR -1U 522 523#define F2FS_ROOT_INO(sbi) (sbi->root_ino_num) 524#define F2FS_NODE_INO(sbi) (sbi->node_ino_num) 525#define F2FS_META_INO(sbi) (sbi->meta_ino_num) 526 527#define F2FS_MAX_QUOTAS 3 528#define QUOTA_DATA(i) (2) 529#define QUOTA_INO(sb,t) (le32_to_cpu((sb)->qf_ino[t])) 530 531#define FS_IMMUTABLE_FL 0x00000010 /* Immutable file */ 532 533/* This flag is used by node and meta inodes, and by recovery */ 534#define GFP_F2FS_ZERO (GFP_NOFS | __GFP_ZERO) 535 536/* 537 * For further optimization on multi-head logs, on-disk layout supports maximum 538 * 16 logs by default. The number, 16, is expected to cover all the cases 539 * enoughly. The implementaion currently uses no more than 6 logs. 540 * Half the logs are used for nodes, and the other half are used for data. 541 */ 542#define MAX_ACTIVE_LOGS 16 543#define MAX_ACTIVE_NODE_LOGS 8 544#define MAX_ACTIVE_DATA_LOGS 8 545 546#define F2FS_FEATURE_ENCRYPT 0x0001 547#define F2FS_FEATURE_BLKZONED 0x0002 548#define F2FS_FEATURE_ATOMIC_WRITE 0x0004 549#define F2FS_FEATURE_EXTRA_ATTR 0x0008 550#define F2FS_FEATURE_PRJQUOTA 0x0010 551#define F2FS_FEATURE_INODE_CHKSUM 0x0020 552#define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040 553#define F2FS_FEATURE_QUOTA_INO 0x0080 554#define F2FS_FEATURE_INODE_CRTIME 0x0100 555#define F2FS_FEATURE_VERITY 0x0400 /* reserved */ 556 557#define MAX_VOLUME_NAME 512 558 559/* 560 * For superblock 561 */ 562#pragma pack(push, 1) 563struct f2fs_device { 564 __u8 path[MAX_PATH_LEN]; 565 __le32 total_segments; 566} __attribute__((packed)); 567 568struct f2fs_super_block { 569 __le32 magic; /* Magic Number */ 570 __le16 major_ver; /* Major Version */ 571 __le16 minor_ver; /* Minor Version */ 572 __le32 log_sectorsize; /* log2 sector size in bytes */ 573 __le32 log_sectors_per_block; /* log2 # of sectors per block */ 574 __le32 log_blocksize; /* log2 block size in bytes */ 575 __le32 log_blocks_per_seg; /* log2 # of blocks per segment */ 576 __le32 segs_per_sec; /* # of segments per section */ 577 __le32 secs_per_zone; /* # of sections per zone */ 578 __le32 checksum_offset; /* checksum offset inside super block */ 579 __le64 block_count; /* total # of user blocks */ 580 __le32 section_count; /* total # of sections */ 581 __le32 segment_count; /* total # of segments */ 582 __le32 segment_count_ckpt; /* # of segments for checkpoint */ 583 __le32 segment_count_sit; /* # of segments for SIT */ 584 __le32 segment_count_nat; /* # of segments for NAT */ 585 __le32 segment_count_ssa; /* # of segments for SSA */ 586 __le32 segment_count_main; /* # of segments for main area */ 587 __le32 segment0_blkaddr; /* start block address of segment 0 */ 588 __le32 cp_blkaddr; /* start block address of checkpoint */ 589 __le32 sit_blkaddr; /* start block address of SIT */ 590 __le32 nat_blkaddr; /* start block address of NAT */ 591 __le32 ssa_blkaddr; /* start block address of SSA */ 592 __le32 main_blkaddr; /* start block address of main area */ 593 __le32 root_ino; /* root inode number */ 594 __le32 node_ino; /* node inode number */ 595 __le32 meta_ino; /* meta inode number */ 596 __u8 uuid[16]; /* 128-bit uuid for volume */ 597 __le16 volume_name[MAX_VOLUME_NAME]; /* volume name */ 598 __le32 extension_count; /* # of extensions below */ 599 __u8 extension_list[F2FS_MAX_EXTENSION][8]; /* extension array */ 600 __le32 cp_payload; 601 __u8 version[VERSION_LEN]; /* the kernel version */ 602 __u8 init_version[VERSION_LEN]; /* the initial kernel version */ 603 __le32 feature; /* defined features */ 604 __u8 encryption_level; /* versioning level for encryption */ 605 __u8 encrypt_pw_salt[16]; /* Salt used for string2key algorithm */ 606 struct f2fs_device devs[MAX_DEVICES]; /* device list */ 607 __le32 qf_ino[F2FS_MAX_QUOTAS]; /* quota inode numbers */ 608 __u8 reserved[315]; /* valid reserved region */ 609} __attribute__((packed)); 610 611/* 612 * For checkpoint 613 */ 614#define CP_NOCRC_RECOVERY_FLAG 0x00000200 615#define CP_TRIMMED_FLAG 0x00000100 616#define CP_NAT_BITS_FLAG 0x00000080 617#define CP_CRC_RECOVERY_FLAG 0x00000040 618#define CP_FASTBOOT_FLAG 0x00000020 619#define CP_FSCK_FLAG 0x00000010 620#define CP_ERROR_FLAG 0x00000008 621#define CP_COMPACT_SUM_FLAG 0x00000004 622#define CP_ORPHAN_PRESENT_FLAG 0x00000002 623#define CP_UMOUNT_FLAG 0x00000001 624 625struct f2fs_checkpoint { 626 __le64 checkpoint_ver; /* checkpoint block version number */ 627 __le64 user_block_count; /* # of user blocks */ 628 __le64 valid_block_count; /* # of valid blocks in main area */ 629 __le32 rsvd_segment_count; /* # of reserved segments for gc */ 630 __le32 overprov_segment_count; /* # of overprovision segments */ 631 __le32 free_segment_count; /* # of free segments in main area */ 632 633 /* information of current node segments */ 634 __le32 cur_node_segno[MAX_ACTIVE_NODE_LOGS]; 635 __le16 cur_node_blkoff[MAX_ACTIVE_NODE_LOGS]; 636 /* information of current data segments */ 637 __le32 cur_data_segno[MAX_ACTIVE_DATA_LOGS]; 638 __le16 cur_data_blkoff[MAX_ACTIVE_DATA_LOGS]; 639 __le32 ckpt_flags; /* Flags : umount and journal_present */ 640 __le32 cp_pack_total_block_count; /* total # of one cp pack */ 641 __le32 cp_pack_start_sum; /* start block number of data summary */ 642 __le32 valid_node_count; /* Total number of valid nodes */ 643 __le32 valid_inode_count; /* Total number of valid inodes */ 644 __le32 next_free_nid; /* Next free node number */ 645 __le32 sit_ver_bitmap_bytesize; /* Default value 64 */ 646 __le32 nat_ver_bitmap_bytesize; /* Default value 256 */ 647 __le32 checksum_offset; /* checksum offset inside cp block */ 648 __le64 elapsed_time; /* mounted time */ 649 /* allocation type of current segment */ 650 unsigned char alloc_type[MAX_ACTIVE_LOGS]; 651 652 /* SIT and NAT version bitmap */ 653 unsigned char sit_nat_version_bitmap[1]; 654} __attribute__((packed)); 655 656#define MAX_SIT_BITMAP_SIZE_IN_CKPT \ 657 (CHECKSUM_OFFSET - sizeof(struct f2fs_checkpoint) + 1 - 64) 658 659/* 660 * For orphan inode management 661 */ 662#define F2FS_ORPHANS_PER_BLOCK 1020 663 664struct f2fs_orphan_block { 665 __le32 ino[F2FS_ORPHANS_PER_BLOCK]; /* inode numbers */ 666 __le32 reserved; /* reserved */ 667 __le16 blk_addr; /* block index in current CP */ 668 __le16 blk_count; /* Number of orphan inode blocks in CP */ 669 __le32 entry_count; /* Total number of orphan nodes in current CP */ 670 __le32 check_sum; /* CRC32 for orphan inode block */ 671} __attribute__((packed)); 672 673/* 674 * For NODE structure 675 */ 676struct f2fs_extent { 677 __le32 fofs; /* start file offset of the extent */ 678 __le32 blk_addr; /* start block address of the extent */ 679 __le32 len; /* lengh of the extent */ 680} __attribute__((packed)); 681 682#define F2FS_NAME_LEN 255 683/* 200 bytes for inline xattrs by default */ 684#define DEFAULT_INLINE_XATTR_ADDRS 50 685#define DEF_ADDRS_PER_INODE 923 /* Address Pointers in an Inode */ 686#define CUR_ADDRS_PER_INODE(inode) (DEF_ADDRS_PER_INODE - \ 687 __get_extra_isize(inode)) 688#define ADDRS_PER_INODE(i) addrs_per_inode(i) 689#define ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */ 690#define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */ 691 692#define NODE_DIR1_BLOCK (DEF_ADDRS_PER_INODE + 1) 693#define NODE_DIR2_BLOCK (DEF_ADDRS_PER_INODE + 2) 694#define NODE_IND1_BLOCK (DEF_ADDRS_PER_INODE + 3) 695#define NODE_IND2_BLOCK (DEF_ADDRS_PER_INODE + 4) 696#define NODE_DIND_BLOCK (DEF_ADDRS_PER_INODE + 5) 697 698#define F2FS_INLINE_XATTR 0x01 /* file inline xattr flag */ 699#define F2FS_INLINE_DATA 0x02 /* file inline data flag */ 700#define F2FS_INLINE_DENTRY 0x04 /* file inline dentry flag */ 701#define F2FS_DATA_EXIST 0x08 /* file inline data exist flag */ 702#define F2FS_INLINE_DOTS 0x10 /* file having implicit dot dentries */ 703#define F2FS_EXTRA_ATTR 0x20 /* file having extra attribute */ 704 705#if !defined(offsetof) 706#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) 707#endif 708 709#define F2FS_TOTAL_EXTRA_ATTR_SIZE \ 710 (offsetof(struct f2fs_inode, i_extra_end) - \ 711 offsetof(struct f2fs_inode, i_extra_isize)) \ 712 713#define F2FS_DEF_PROJID 0 /* default project ID */ 714 715#define MAX_INLINE_DATA(node) (sizeof(__le32) * \ 716 (DEF_ADDRS_PER_INODE - \ 717 get_inline_xattr_addrs(&node->i) - \ 718 get_extra_isize(node) - \ 719 DEF_INLINE_RESERVED_SIZE)) 720#define DEF_MAX_INLINE_DATA (sizeof(__le32) * \ 721 (DEF_ADDRS_PER_INODE - \ 722 DEFAULT_INLINE_XATTR_ADDRS - \ 723 F2FS_TOTAL_EXTRA_ATTR_SIZE - \ 724 DEF_INLINE_RESERVED_SIZE)) 725#define INLINE_DATA_OFFSET (PAGE_CACHE_SIZE - sizeof(struct node_footer) \ 726 - sizeof(__le32)*(DEF_ADDRS_PER_INODE + 5 - \ 727 DEF_INLINE_RESERVED_SIZE)) 728 729#define DEF_DIR_LEVEL 0 730 731/* 732 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. 733 */ 734#define FADVISE_COLD_BIT 0x01 735#define FADVISE_LOST_PINO_BIT 0x02 736#define FADVISE_ENCRYPT_BIT 0x04 737#define FADVISE_ENC_NAME_BIT 0x08 738#define FADVISE_KEEP_SIZE_BIT 0x10 739#define FADVISE_HOT_BIT 0x20 740#define FADVISE_VERITY_BIT 0x40 /* reserved */ 741 742#define file_is_encrypt(fi) ((fi)->i_advise & FADVISE_ENCRYPT_BIT) 743#define file_enc_name(fi) ((fi)->i_advise & FADVISE_ENC_NAME_BIT) 744 745struct f2fs_inode { 746 __le16 i_mode; /* file mode */ 747 __u8 i_advise; /* file hints */ 748 __u8 i_inline; /* file inline flags */ 749 __le32 i_uid; /* user ID */ 750 __le32 i_gid; /* group ID */ 751 __le32 i_links; /* links count */ 752 __le64 i_size; /* file size in bytes */ 753 __le64 i_blocks; /* file size in blocks */ 754 __le64 i_atime; /* access time */ 755 __le64 i_ctime; /* change time */ 756 __le64 i_mtime; /* modification time */ 757 __le32 i_atime_nsec; /* access time in nano scale */ 758 __le32 i_ctime_nsec; /* change time in nano scale */ 759 __le32 i_mtime_nsec; /* modification time in nano scale */ 760 __le32 i_generation; /* file version (for NFS) */ 761 __le32 i_current_depth; /* only for directory depth */ 762 __le32 i_xattr_nid; /* nid to save xattr */ 763 __le32 i_flags; /* file attributes */ 764 __le32 i_pino; /* parent inode number */ 765 __le32 i_namelen; /* file name length */ 766 __u8 i_name[F2FS_NAME_LEN]; /* file name for SPOR */ 767 __u8 i_dir_level; /* dentry_level for large dir */ 768 769 struct f2fs_extent i_ext; /* caching a largest extent */ 770 771 union { 772 struct { 773 __le16 i_extra_isize; /* extra inode attribute size */ 774 __le16 i_inline_xattr_size; /* inline xattr size, unit: 4 bytes */ 775 __le32 i_projid; /* project id */ 776 __le32 i_inode_checksum;/* inode meta checksum */ 777 __le64 i_crtime; /* creation time */ 778 __le32 i_crtime_nsec; /* creation time in nano scale */ 779 __le32 i_extra_end[0]; /* for attribute size calculation */ 780 } __attribute__((packed)); 781 __le32 i_addr[DEF_ADDRS_PER_INODE]; /* Pointers to data blocks */ 782 }; 783 __le32 i_nid[5]; /* direct(2), indirect(2), 784 double_indirect(1) node id */ 785} __attribute__((packed)); 786 787 788struct direct_node { 789 __le32 addr[ADDRS_PER_BLOCK]; /* array of data block address */ 790} __attribute__((packed)); 791 792struct indirect_node { 793 __le32 nid[NIDS_PER_BLOCK]; /* array of data block address */ 794} __attribute__((packed)); 795 796enum { 797 COLD_BIT_SHIFT = 0, 798 FSYNC_BIT_SHIFT, 799 DENT_BIT_SHIFT, 800 OFFSET_BIT_SHIFT 801}; 802 803#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ 804 >> OFFSET_BIT_SHIFT) 805struct node_footer { 806 __le32 nid; /* node id */ 807 __le32 ino; /* inode nunmber */ 808 __le32 flag; /* include cold/fsync/dentry marks and offset */ 809 __le64 cp_ver; /* checkpoint version */ 810 __le32 next_blkaddr; /* next node page block address */ 811} __attribute__((packed)); 812 813struct f2fs_node { 814 /* can be one of three types: inode, direct, and indirect types */ 815 union { 816 struct f2fs_inode i; 817 struct direct_node dn; 818 struct indirect_node in; 819 }; 820 struct node_footer footer; 821} __attribute__((packed)); 822 823/* 824 * For NAT entries 825 */ 826#define NAT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_nat_entry)) 827#define NAT_BLOCK_OFFSET(start_nid) (start_nid / NAT_ENTRY_PER_BLOCK) 828 829struct f2fs_nat_entry { 830 __u8 version; /* latest version of cached nat entry */ 831 __le32 ino; /* inode number */ 832 __le32 block_addr; /* block address */ 833} __attribute__((packed)); 834 835struct f2fs_nat_block { 836 struct f2fs_nat_entry entries[NAT_ENTRY_PER_BLOCK]; 837} __attribute__((packed)); 838 839/* 840 * For SIT entries 841 * 842 * Each segment is 2MB in size by default so that a bitmap for validity of 843 * there-in blocks should occupy 64 bytes, 512 bits. 844 * Not allow to change this. 845 */ 846#define SIT_VBLOCK_MAP_SIZE 64 847#define SIT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_sit_entry)) 848 849/* 850 * F2FS uses 4 bytes to represent block address. As a result, supported size of 851 * disk is 16 TB and it equals to 16 * 1024 * 1024 / 2 segments. 852 */ 853#define F2FS_MAX_SEGMENT ((16 * 1024 * 1024) / 2) 854#define MAX_SIT_BITMAP_SIZE (SEG_ALIGN(SIZE_ALIGN(F2FS_MAX_SEGMENT, \ 855 SIT_ENTRY_PER_BLOCK)) * \ 856 c.blks_per_seg / 8) 857 858/* 859 * Note that f2fs_sit_entry->vblocks has the following bit-field information. 860 * [15:10] : allocation type such as CURSEG_XXXX_TYPE 861 * [9:0] : valid block count 862 */ 863#define SIT_VBLOCKS_SHIFT 10 864#define SIT_VBLOCKS_MASK ((1 << SIT_VBLOCKS_SHIFT) - 1) 865#define GET_SIT_VBLOCKS(raw_sit) \ 866 (le16_to_cpu((raw_sit)->vblocks) & SIT_VBLOCKS_MASK) 867#define GET_SIT_TYPE(raw_sit) \ 868 ((le16_to_cpu((raw_sit)->vblocks) & ~SIT_VBLOCKS_MASK) \ 869 >> SIT_VBLOCKS_SHIFT) 870 871struct f2fs_sit_entry { 872 __le16 vblocks; /* reference above */ 873 __u8 valid_map[SIT_VBLOCK_MAP_SIZE]; /* bitmap for valid blocks */ 874 __le64 mtime; /* segment age for cleaning */ 875} __attribute__((packed)); 876 877struct f2fs_sit_block { 878 struct f2fs_sit_entry entries[SIT_ENTRY_PER_BLOCK]; 879} __attribute__((packed)); 880 881/* 882 * For segment summary 883 * 884 * One summary block contains exactly 512 summary entries, which represents 885 * exactly 2MB segment by default. Not allow to change the basic units. 886 * 887 * NOTE: For initializing fields, you must use set_summary 888 * 889 * - If data page, nid represents dnode's nid 890 * - If node page, nid represents the node page's nid. 891 * 892 * The ofs_in_node is used by only data page. It represents offset 893 * from node's page's beginning to get a data block address. 894 * ex) data_blkaddr = (block_t)(nodepage_start_address + ofs_in_node) 895 */ 896#define ENTRIES_IN_SUM 512 897#define SUMMARY_SIZE (7) /* sizeof(struct summary) */ 898#define SUM_FOOTER_SIZE (5) /* sizeof(struct summary_footer) */ 899#define SUM_ENTRIES_SIZE (SUMMARY_SIZE * ENTRIES_IN_SUM) 900 901/* a summary entry for a 4KB-sized block in a segment */ 902struct f2fs_summary { 903 __le32 nid; /* parent node id */ 904 union { 905 __u8 reserved[3]; 906 struct { 907 __u8 version; /* node version number */ 908 __le16 ofs_in_node; /* block index in parent node */ 909 } __attribute__((packed)); 910 }; 911} __attribute__((packed)); 912 913/* summary block type, node or data, is stored to the summary_footer */ 914#define SUM_TYPE_NODE (1) 915#define SUM_TYPE_DATA (0) 916 917struct summary_footer { 918 unsigned char entry_type; /* SUM_TYPE_XXX */ 919 __le32 check_sum; /* summary checksum */ 920} __attribute__((packed)); 921 922#define SUM_JOURNAL_SIZE (F2FS_BLKSIZE - SUM_FOOTER_SIZE -\ 923 SUM_ENTRIES_SIZE) 924#define NAT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\ 925 sizeof(struct nat_journal_entry)) 926#define NAT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\ 927 sizeof(struct nat_journal_entry)) 928#define SIT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\ 929 sizeof(struct sit_journal_entry)) 930#define SIT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\ 931 sizeof(struct sit_journal_entry)) 932 933/* 934 * Reserved area should make size of f2fs_extra_info equals to 935 * that of nat_journal and sit_journal. 936 */ 937#define EXTRA_INFO_RESERVED (SUM_JOURNAL_SIZE - 2 - 8) 938 939/* 940 * frequently updated NAT/SIT entries can be stored in the spare area in 941 * summary blocks 942 */ 943enum { 944 NAT_JOURNAL = 0, 945 SIT_JOURNAL 946}; 947 948struct nat_journal_entry { 949 __le32 nid; 950 struct f2fs_nat_entry ne; 951} __attribute__((packed)); 952 953struct nat_journal { 954 struct nat_journal_entry entries[NAT_JOURNAL_ENTRIES]; 955 __u8 reserved[NAT_JOURNAL_RESERVED]; 956} __attribute__((packed)); 957 958struct sit_journal_entry { 959 __le32 segno; 960 struct f2fs_sit_entry se; 961} __attribute__((packed)); 962 963struct sit_journal { 964 struct sit_journal_entry entries[SIT_JOURNAL_ENTRIES]; 965 __u8 reserved[SIT_JOURNAL_RESERVED]; 966} __attribute__((packed)); 967 968struct f2fs_extra_info { 969 __le64 kbytes_written; 970 __u8 reserved[EXTRA_INFO_RESERVED]; 971} __attribute__((packed)); 972 973struct f2fs_journal { 974 union { 975 __le16 n_nats; 976 __le16 n_sits; 977 }; 978 /* spare area is used by NAT or SIT journals or extra info */ 979 union { 980 struct nat_journal nat_j; 981 struct sit_journal sit_j; 982 struct f2fs_extra_info info; 983 }; 984} __attribute__((packed)); 985 986/* 4KB-sized summary block structure */ 987struct f2fs_summary_block { 988 struct f2fs_summary entries[ENTRIES_IN_SUM]; 989 struct f2fs_journal journal; 990 struct summary_footer footer; 991} __attribute__((packed)); 992 993/* 994 * For directory operations 995 */ 996#define F2FS_DOT_HASH 0 997#define F2FS_DDOT_HASH F2FS_DOT_HASH 998#define F2FS_MAX_HASH (~((0x3ULL) << 62)) 999#define F2FS_HASH_COL_BIT ((0x1ULL) << 63) 1000 1001typedef __le32 f2fs_hash_t; 1002 1003/* One directory entry slot covers 8bytes-long file name */ 1004#define F2FS_SLOT_LEN 8 1005#define F2FS_SLOT_LEN_BITS 3 1006 1007#define GET_DENTRY_SLOTS(x) ((x + F2FS_SLOT_LEN - 1) >> F2FS_SLOT_LEN_BITS) 1008 1009/* the number of dentry in a block */ 1010#define NR_DENTRY_IN_BLOCK 214 1011 1012/* MAX level for dir lookup */ 1013#define MAX_DIR_HASH_DEPTH 63 1014 1015/* MAX buckets in one level of dir */ 1016#define MAX_DIR_BUCKETS (1 << ((MAX_DIR_HASH_DEPTH / 2) - 1)) 1017 1018#define SIZE_OF_DIR_ENTRY 11 /* by byte */ 1019#define SIZE_OF_DENTRY_BITMAP ((NR_DENTRY_IN_BLOCK + BITS_PER_BYTE - 1) / \ 1020 BITS_PER_BYTE) 1021#define SIZE_OF_RESERVED (PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \ 1022 F2FS_SLOT_LEN) * \ 1023 NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP)) 1024 1025/* One directory entry slot representing F2FS_SLOT_LEN-sized file name */ 1026struct f2fs_dir_entry { 1027 __le32 hash_code; /* hash code of file name */ 1028 __le32 ino; /* inode number */ 1029 __le16 name_len; /* lengh of file name */ 1030 __u8 file_type; /* file type */ 1031} __attribute__((packed)); 1032 1033/* 4KB-sized directory entry block */ 1034struct f2fs_dentry_block { 1035 /* validity bitmap for directory entries in each block */ 1036 __u8 dentry_bitmap[SIZE_OF_DENTRY_BITMAP]; 1037 __u8 reserved[SIZE_OF_RESERVED]; 1038 struct f2fs_dir_entry dentry[NR_DENTRY_IN_BLOCK]; 1039 __u8 filename[NR_DENTRY_IN_BLOCK][F2FS_SLOT_LEN]; 1040} __attribute__((packed)); 1041#pragma pack(pop) 1042 1043/* for inline stuff */ 1044#define DEF_INLINE_RESERVED_SIZE 1 1045 1046/* for inline dir */ 1047#define NR_INLINE_DENTRY(node) (MAX_INLINE_DATA(node) * BITS_PER_BYTE / \ 1048 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ 1049 BITS_PER_BYTE + 1)) 1050#define INLINE_DENTRY_BITMAP_SIZE(node) ((NR_INLINE_DENTRY(node) + \ 1051 BITS_PER_BYTE - 1) / BITS_PER_BYTE) 1052#define INLINE_RESERVED_SIZE(node) (MAX_INLINE_DATA(node) - \ 1053 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ 1054 NR_INLINE_DENTRY(node) + \ 1055 INLINE_DENTRY_BITMAP_SIZE(node))) 1056 1057/* file types used in inode_info->flags */ 1058enum FILE_TYPE { 1059 F2FS_FT_UNKNOWN, 1060 F2FS_FT_REG_FILE, 1061 F2FS_FT_DIR, 1062 F2FS_FT_CHRDEV, 1063 F2FS_FT_BLKDEV, 1064 F2FS_FT_FIFO, 1065 F2FS_FT_SOCK, 1066 F2FS_FT_SYMLINK, 1067 F2FS_FT_MAX, 1068 /* added for fsck */ 1069 F2FS_FT_ORPHAN, 1070 F2FS_FT_XATTR, 1071 F2FS_FT_LAST_FILE_TYPE = F2FS_FT_XATTR, 1072}; 1073 1074/* from f2fs/segment.h */ 1075enum { 1076 LFS = 0, 1077 SSR 1078}; 1079 1080extern int utf8_to_utf16(u_int16_t *, const char *, size_t, size_t); 1081extern int utf16_to_utf8(char *, const u_int16_t *, size_t, size_t); 1082extern int log_base_2(u_int32_t); 1083extern unsigned int addrs_per_inode(struct f2fs_inode *); 1084extern __u32 f2fs_inode_chksum(struct f2fs_node *); 1085 1086extern int get_bits_in_byte(unsigned char n); 1087extern int test_and_set_bit_le(u32, u8 *); 1088extern int test_and_clear_bit_le(u32, u8 *); 1089extern int test_bit_le(u32, const u8 *); 1090extern int f2fs_test_bit(unsigned int, const char *); 1091extern int f2fs_set_bit(unsigned int, char *); 1092extern int f2fs_clear_bit(unsigned int, char *); 1093extern u64 find_next_bit_le(const u8 *, u64, u64); 1094extern u64 find_next_zero_bit_le(const u8 *, u64, u64); 1095 1096extern u_int32_t f2fs_cal_crc32(u_int32_t, void *, int); 1097extern int f2fs_crc_valid(u_int32_t blk_crc, void *buf, int len); 1098 1099extern void f2fs_init_configuration(void); 1100extern int f2fs_devs_are_umounted(void); 1101extern int f2fs_dev_is_umounted(char *); 1102extern int f2fs_get_device_info(void); 1103extern int get_device_info(int); 1104extern int f2fs_init_sparse_file(void); 1105extern int f2fs_finalize_device(void); 1106extern int f2fs_fsync_device(void); 1107 1108extern int dev_read(void *, __u64, size_t); 1109extern int dev_write(void *, __u64, size_t); 1110extern int dev_write_block(void *, __u64); 1111extern int dev_write_dump(void *, __u64, size_t); 1112/* All bytes in the buffer must be 0 use dev_fill(). */ 1113extern int dev_fill(void *, __u64, size_t); 1114extern int dev_fill_block(void *, __u64); 1115 1116extern int dev_read_block(void *, __u64); 1117extern int dev_reada_block(__u64); 1118 1119extern int dev_read_version(void *, __u64, size_t); 1120extern void get_kernel_version(__u8 *); 1121extern void get_kernel_uname_version(__u8 *); 1122f2fs_hash_t f2fs_dentry_hash(const unsigned char *, int); 1123 1124static inline bool f2fs_has_extra_isize(struct f2fs_inode *inode) 1125{ 1126 return (inode->i_inline & F2FS_EXTRA_ATTR); 1127} 1128 1129static inline int __get_extra_isize(struct f2fs_inode *inode) 1130{ 1131 if (f2fs_has_extra_isize(inode)) 1132 return le16_to_cpu(inode->i_extra_isize) / sizeof(__le32); 1133 return 0; 1134} 1135 1136extern struct f2fs_configuration c; 1137static inline int get_inline_xattr_addrs(struct f2fs_inode *inode) 1138{ 1139 if (c.feature & cpu_to_le32(F2FS_FEATURE_FLEXIBLE_INLINE_XATTR)) 1140 return le16_to_cpu(inode->i_inline_xattr_size); 1141 else if (inode->i_inline & F2FS_INLINE_XATTR || 1142 inode->i_inline & F2FS_INLINE_DENTRY) 1143 return DEFAULT_INLINE_XATTR_ADDRS; 1144 else 1145 return 0; 1146} 1147 1148#define get_extra_isize(node) __get_extra_isize(&node->i) 1149 1150#define F2FS_ZONED_NONE 0 1151#define F2FS_ZONED_HA 1 1152#define F2FS_ZONED_HM 2 1153 1154#ifdef HAVE_LINUX_BLKZONED_H 1155 1156#define blk_zone_type(z) (z)->type 1157#define blk_zone_conv(z) ((z)->type == BLK_ZONE_TYPE_CONVENTIONAL) 1158#define blk_zone_seq_req(z) ((z)->type == BLK_ZONE_TYPE_SEQWRITE_REQ) 1159#define blk_zone_seq_pref(z) ((z)->type == BLK_ZONE_TYPE_SEQWRITE_PREF) 1160#define blk_zone_seq(z) (blk_zone_seq_req(z) || blk_zone_seq_pref(z)) 1161 1162static inline const char * 1163blk_zone_type_str(struct blk_zone *blkz) 1164{ 1165 switch (blk_zone_type(blkz)) { 1166 case BLK_ZONE_TYPE_CONVENTIONAL: 1167 return( "Conventional" ); 1168 case BLK_ZONE_TYPE_SEQWRITE_REQ: 1169 return( "Sequential-write-required" ); 1170 case BLK_ZONE_TYPE_SEQWRITE_PREF: 1171 return( "Sequential-write-preferred" ); 1172 } 1173 return( "Unknown-type" ); 1174} 1175 1176#define blk_zone_cond(z) (z)->cond 1177 1178static inline const char * 1179blk_zone_cond_str(struct blk_zone *blkz) 1180{ 1181 switch (blk_zone_cond(blkz)) { 1182 case BLK_ZONE_COND_NOT_WP: 1183 return "Not-write-pointer"; 1184 case BLK_ZONE_COND_EMPTY: 1185 return "Empty"; 1186 case BLK_ZONE_COND_IMP_OPEN: 1187 return "Implicit-open"; 1188 case BLK_ZONE_COND_EXP_OPEN: 1189 return "Explicit-open"; 1190 case BLK_ZONE_COND_CLOSED: 1191 return "Closed"; 1192 case BLK_ZONE_COND_READONLY: 1193 return "Read-only"; 1194 case BLK_ZONE_COND_FULL: 1195 return "Full"; 1196 case BLK_ZONE_COND_OFFLINE: 1197 return "Offline"; 1198 } 1199 return "Unknown-cond"; 1200} 1201 1202#define blk_zone_empty(z) (blk_zone_cond(z) == BLK_ZONE_COND_EMPTY) 1203 1204#define blk_zone_sector(z) (z)->start 1205#define blk_zone_length(z) (z)->len 1206#define blk_zone_wp_sector(z) (z)->wp 1207#define blk_zone_need_reset(z) (int)(z)->reset 1208#define blk_zone_non_seq(z) (int)(z)->non_seq 1209 1210#endif 1211 1212extern void f2fs_get_zoned_model(int); 1213extern int f2fs_get_zone_blocks(int); 1214extern int f2fs_check_zones(int); 1215extern int f2fs_reset_zones(int); 1216 1217extern struct f2fs_configuration c; 1218 1219#define SIZE_ALIGN(val, size) ((val) + (size) - 1) / (size) 1220#define SEG_ALIGN(blks) SIZE_ALIGN(blks, c.blks_per_seg) 1221#define ZONE_ALIGN(blks) SIZE_ALIGN(blks, c.blks_per_seg * \ 1222 c.segs_per_zone) 1223 1224static inline double get_best_overprovision(struct f2fs_super_block *sb) 1225{ 1226 double reserved, ovp, candidate, end, diff, space; 1227 double max_ovp = 0, max_space = 0; 1228 1229 if (get_sb(segment_count_main) < 256) { 1230 candidate = 10; 1231 end = 95; 1232 diff = 5; 1233 } else { 1234 candidate = 0.01; 1235 end = 10; 1236 diff = 0.01; 1237 } 1238 1239 for (; candidate <= end; candidate += diff) { 1240 reserved = (2 * (100 / candidate + 1) + 6) * 1241 get_sb(segs_per_sec); 1242 ovp = (get_sb(segment_count_main) - reserved) * candidate / 100; 1243 space = get_sb(segment_count_main) - reserved - ovp; 1244 if (max_space < space) { 1245 max_space = space; 1246 max_ovp = candidate; 1247 } 1248 } 1249 return max_ovp; 1250} 1251 1252static inline __le64 get_cp_crc(struct f2fs_checkpoint *cp) 1253{ 1254 u_int64_t cp_ver = get_cp(checkpoint_ver); 1255 size_t crc_offset = get_cp(checksum_offset); 1256 u_int32_t crc = le32_to_cpu(*(__le32 *)((unsigned char *)cp + 1257 crc_offset)); 1258 1259 cp_ver |= ((u_int64_t)crc << 32); 1260 return cpu_to_le64(cp_ver); 1261} 1262 1263static inline int exist_qf_ino(struct f2fs_super_block *sb) 1264{ 1265 int i; 1266 1267 for (i = 0; i < F2FS_MAX_QUOTAS; i++) 1268 if (sb->qf_ino[i]) 1269 return 1; 1270 return 0; 1271} 1272 1273static inline int is_qf_ino(struct f2fs_super_block *sb, nid_t ino) 1274{ 1275 int i; 1276 1277 for (i = 0; i < F2FS_MAX_QUOTAS; i++) 1278 if (sb->qf_ino[i] == ino) 1279 return 1; 1280 return 0; 1281} 1282 1283#endif /*__F2FS_FS_H */ 1284