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 */
bswap_16(uint16_t val)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 */
bswap_32(uint32_t val)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 */
bswap_64(uint64_t val)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
f2fs_has_extra_isize(struct f2fs_inode * inode)1124 static inline bool f2fs_has_extra_isize(struct f2fs_inode *inode)
1125 {
1126 return (inode->i_inline & F2FS_EXTRA_ATTR);
1127 }
1128
__get_extra_isize(struct f2fs_inode * inode)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;
get_inline_xattr_addrs(struct f2fs_inode * inode)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 *
blk_zone_type_str(struct blk_zone * blkz)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 *
blk_zone_cond_str(struct blk_zone * blkz)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
get_best_overprovision(struct f2fs_super_block * sb)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
get_cp_crc(struct f2fs_checkpoint * cp)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
exist_qf_ino(struct f2fs_super_block * sb)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
is_qf_ino(struct f2fs_super_block * sb,nid_t ino)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