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 58 typedef uint64_t u_int64_t; 59 typedef uint32_t u_int32_t; 60 typedef uint16_t u_int16_t; 61 typedef uint8_t u_int8_t; 62 #endif 63 64 typedef u_int64_t u64; 65 typedef u_int32_t u32; 66 typedef u_int16_t u16; 67 typedef u_int8_t u8; 68 typedef u32 block_t; 69 typedef u32 nid_t; 70 #ifndef bool 71 typedef u8 bool; 72 #endif 73 typedef unsigned long pgoff_t; 74 typedef unsigned short umode_t; 75 76 #ifndef HAVE_LINUX_TYPES_H 77 typedef u8 __u8; 78 typedef u16 __u16; 79 typedef u32 __u32; 80 typedef u64 __u64; 81 typedef u16 __le16; 82 typedef u32 __le32; 83 typedef u64 __le64; 84 typedef u16 __be16; 85 typedef u32 __be32; 86 typedef 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 */ 100 static 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 */ 114 static 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 */ 133 static 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 256 293 294 enum f2fs_config_func { 295 MKFS, 296 FSCK, 297 DUMP, 298 DEFRAG, 299 RESIZE, 300 SLOAD, 301 }; 302 303 struct 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 }; 318 319 struct 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) 491 492 enum { 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) 563 struct f2fs_device { 564 __u8 path[MAX_PATH_LEN]; 565 __le32 total_segments; 566 } __attribute__((packed)); 567 568 struct 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 624 625 struct 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 663 664 struct 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 */ 676 struct 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) 744 745 struct 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)); 786 787 788 struct direct_node { 789 __le32 addr[ADDRS_PER_BLOCK]; /* array of data block address */ 790 } __attribute__((packed)); 791 792 struct indirect_node { 793 __le32 nid[NIDS_PER_BLOCK]; /* array of data block address */ 794 } __attribute__((packed)); 795 796 enum { 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) 805 struct 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)); 812 813 struct 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) 828 829 struct 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)); 834 835 struct 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) 870 871 struct 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)); 876 877 struct 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 */ 902 struct 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) 916 917 struct 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 */ 943 enum { 944 NAT_JOURNAL = 0, 945 SIT_JOURNAL 946 }; 947 948 struct nat_journal_entry { 949 __le32 nid; 950 struct f2fs_nat_entry ne; 951 } __attribute__((packed)); 952 953 struct nat_journal { 954 struct nat_journal_entry entries[NAT_JOURNAL_ENTRIES]; 955 __u8 reserved[NAT_JOURNAL_RESERVED]; 956 } __attribute__((packed)); 957 958 struct sit_journal_entry { 959 __le32 segno; 960 struct f2fs_sit_entry se; 961 } __attribute__((packed)); 962 963 struct sit_journal { 964 struct sit_journal_entry entries[SIT_JOURNAL_ENTRIES]; 965 __u8 reserved[SIT_JOURNAL_RESERVED]; 966 } __attribute__((packed)); 967 968 struct f2fs_extra_info { 969 __le64 kbytes_written; 970 __u8 reserved[EXTRA_INFO_RESERVED]; 971 } __attribute__((packed)); 972 973 struct 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 */ 987 struct 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 1001 typedef __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 */ 1026 struct 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 */ 1034 struct 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 */ 1058 enum 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 */ 1075 enum { 1076 LFS = 0, 1077 SSR 1078 }; 1079 1080 extern int utf8_to_utf16(u_int16_t *, const char *, size_t, size_t); 1081 extern int utf16_to_utf8(char *, const u_int16_t *, size_t, size_t); 1082 extern int log_base_2(u_int32_t); 1083 extern unsigned int addrs_per_inode(struct f2fs_inode *); 1084 extern __u32 f2fs_inode_chksum(struct f2fs_node *); 1085 1086 extern int get_bits_in_byte(unsigned char n); 1087 extern int test_and_set_bit_le(u32, u8 *); 1088 extern int test_and_clear_bit_le(u32, u8 *); 1089 extern int test_bit_le(u32, const u8 *); 1090 extern int f2fs_test_bit(unsigned int, const char *); 1091 extern int f2fs_set_bit(unsigned int, char *); 1092 extern int f2fs_clear_bit(unsigned int, char *); 1093 extern u64 find_next_bit_le(const u8 *, u64, u64); 1094 extern u64 find_next_zero_bit_le(const u8 *, u64, u64); 1095 1096 extern u_int32_t f2fs_cal_crc32(u_int32_t, void *, int); 1097 extern int f2fs_crc_valid(u_int32_t blk_crc, void *buf, int len); 1098 1099 extern void f2fs_init_configuration(void); 1100 extern int f2fs_devs_are_umounted(void); 1101 extern int f2fs_dev_is_umounted(char *); 1102 extern int f2fs_get_device_info(void); 1103 extern int get_device_info(int); 1104 extern int f2fs_init_sparse_file(void); 1105 extern int f2fs_finalize_device(void); 1106 extern int f2fs_fsync_device(void); 1107 1108 extern int dev_read(void *, __u64, size_t); 1109 extern int dev_write(void *, __u64, size_t); 1110 extern int dev_write_block(void *, __u64); 1111 extern int dev_write_dump(void *, __u64, size_t); 1112 /* All bytes in the buffer must be 0 use dev_fill(). */ 1113 extern int dev_fill(void *, __u64, size_t); 1114 extern int dev_fill_block(void *, __u64); 1115 1116 extern int dev_read_block(void *, __u64); 1117 extern int dev_reada_block(__u64); 1118 1119 extern int dev_read_version(void *, __u64, size_t); 1120 extern void get_kernel_version(__u8 *); 1121 extern void get_kernel_uname_version(__u8 *); 1122 f2fs_hash_t f2fs_dentry_hash(const unsigned char *, int); 1123 1124 static inline bool f2fs_has_extra_isize(struct f2fs_inode *inode) 1125 { 1126 return (inode->i_inline & F2FS_EXTRA_ATTR); 1127 } 1128 1129 static 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 1136 extern struct f2fs_configuration c; 1137 static 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 1162 static inline const char * 1163 blk_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 1178 static inline const char * 1179 blk_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 1212 extern void f2fs_get_zoned_model(int); 1213 extern int f2fs_get_zone_blocks(int); 1214 extern int f2fs_check_zones(int); 1215 extern int f2fs_reset_zones(int); 1216 1217 extern 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 1224 static 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 1252 static 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 1263 static 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 1273 static 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
