| /** |
| * f2fs_fs.h |
| * |
| * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com/ |
| * Copyright (c) 2019 Google Inc. |
| * http://www.google.com/ |
| * Copyright (c) 2020 Google Inc. |
| * Robin Hsu <robinhsu@google.com> |
| * : add sload compression support |
| * |
| * Dual licensed under the GPL or LGPL version 2 licenses. |
| * |
| * The byteswap codes are copied from: |
| * samba_3_master/lib/ccan/endian/endian.h under LGPL 2.1 |
| */ |
| #ifndef __F2FS_FS_H__ |
| #define __F2FS_FS_H__ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <time.h> |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #ifdef __ANDROID__ |
| #define WITH_ANDROID |
| #endif |
| |
| #ifdef WITH_ANDROID |
| #include <android_config.h> |
| #else |
| #define WITH_DUMP |
| #define WITH_DEFRAG |
| #define WITH_RESIZE |
| #define WITH_SLOAD |
| #define WITH_LABEL |
| #endif |
| |
| #include <inttypes.h> |
| #ifdef HAVE_LINUX_TYPES_H |
| #ifndef __SANE_USERSPACE_TYPES__ |
| #define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */ |
| #endif |
| #include <linux/types.h> |
| #endif |
| #include <sys/types.h> |
| |
| #ifdef HAVE_LINUX_BLKZONED_H |
| #include <linux/blkzoned.h> |
| #endif |
| |
| #ifdef HAVE_LIBSELINUX |
| #include <selinux/selinux.h> |
| #include <selinux/label.h> |
| #endif |
| |
| #ifdef UNUSED |
| #elif defined(__GNUC__) |
| # define UNUSED(x) UNUSED_ ## x __attribute__((unused)) |
| #elif defined(__LCLINT__) |
| # define UNUSED(x) x |
| #elif defined(__cplusplus) |
| # define UNUSED(x) |
| #else |
| # define UNUSED(x) x |
| #endif |
| |
| #ifdef ANDROID_WINDOWS_HOST |
| #undef HAVE_LINUX_TYPES_H |
| typedef uint64_t u_int64_t; |
| typedef uint32_t u_int32_t; |
| typedef uint16_t u_int16_t; |
| typedef uint8_t u_int8_t; |
| #endif |
| |
| /* codes from kernel's f2fs.h, GPL-v2.0 */ |
| #define MIN_COMPRESS_LOG_SIZE 2 |
| #define MAX_COMPRESS_LOG_SIZE 8 |
| |
| typedef u_int64_t u64; |
| typedef u_int32_t u32; |
| typedef u_int16_t u16; |
| typedef u_int8_t u8; |
| typedef u32 block_t; |
| typedef u32 nid_t; |
| #ifndef bool |
| typedef u8 bool; |
| #endif |
| typedef unsigned long pgoff_t; |
| typedef unsigned short umode_t; |
| |
| #ifndef HAVE_LINUX_TYPES_H |
| typedef u8 __u8; |
| typedef u16 __u16; |
| typedef u32 __u32; |
| typedef u64 __u64; |
| typedef u16 __le16; |
| typedef u32 __le32; |
| typedef u64 __le64; |
| typedef u16 __be16; |
| typedef u32 __be32; |
| typedef u64 __be64; |
| #endif |
| |
| /* |
| * code borrowed from kernel f2fs dirver: f2fs.h, GPL-2.0 |
| * : definitions of COMPRESS_DATA_RESERVED_SIZE, |
| * struct compress_data, COMPRESS_HEADER_SIZE, |
| * and struct compress_ctx |
| */ |
| #define COMPRESS_DATA_RESERVED_SIZE 4 |
| struct compress_data { |
| __le32 clen; /* compressed data size */ |
| __le32 chksum; /* checksum of compressed data */ |
| __le32 reserved[COMPRESS_DATA_RESERVED_SIZE]; /* reserved */ |
| u8 cdata[]; /* compressed data */ |
| }; |
| #define COMPRESS_HEADER_SIZE (sizeof(struct compress_data)) |
| /* compress context */ |
| struct compress_ctx { |
| unsigned int cluster_size; /* page count in cluster */ |
| unsigned int log_cluster_size; /* log of cluster size */ |
| void *rbuf; /* compression input buffer */ |
| struct compress_data *cbuf; /* comprsssion output header + data */ |
| size_t rlen; /* valid data length in rbuf */ |
| size_t clen; /* valid data length in cbuf */ |
| void *private; /* work buf for compress algorithm */ |
| }; |
| |
| #if HAVE_BYTESWAP_H |
| #include <byteswap.h> |
| #else |
| /** |
| * bswap_16 - reverse bytes in a uint16_t value. |
| * @val: value whose bytes to swap. |
| * |
| * Example: |
| * // Output contains "1024 is 4 as two bytes reversed" |
| * printf("1024 is %u as two bytes reversed\n", bswap_16(1024)); |
| */ |
| static inline uint16_t bswap_16(uint16_t val) |
| { |
| return ((val & (uint16_t)0x00ffU) << 8) |
| | ((val & (uint16_t)0xff00U) >> 8); |
| } |
| |
| /** |
| * bswap_32 - reverse bytes in a uint32_t value. |
| * @val: value whose bytes to swap. |
| * |
| * Example: |
| * // Output contains "1024 is 262144 as four bytes reversed" |
| * printf("1024 is %u as four bytes reversed\n", bswap_32(1024)); |
| */ |
| static inline uint32_t bswap_32(uint32_t val) |
| { |
| return ((val & (uint32_t)0x000000ffUL) << 24) |
| | ((val & (uint32_t)0x0000ff00UL) << 8) |
| | ((val & (uint32_t)0x00ff0000UL) >> 8) |
| | ((val & (uint32_t)0xff000000UL) >> 24); |
| } |
| #endif /* !HAVE_BYTESWAP_H */ |
| |
| #if defined HAVE_DECL_BSWAP_64 && !HAVE_DECL_BSWAP_64 |
| /** |
| * bswap_64 - reverse bytes in a uint64_t value. |
| * @val: value whose bytes to swap. |
| * |
| * Example: |
| * // Output contains "1024 is 1125899906842624 as eight bytes reversed" |
| * printf("1024 is %llu as eight bytes reversed\n", |
| * (unsigned long long)bswap_64(1024)); |
| */ |
| static inline uint64_t bswap_64(uint64_t val) |
| { |
| return ((val & (uint64_t)0x00000000000000ffULL) << 56) |
| | ((val & (uint64_t)0x000000000000ff00ULL) << 40) |
| | ((val & (uint64_t)0x0000000000ff0000ULL) << 24) |
| | ((val & (uint64_t)0x00000000ff000000ULL) << 8) |
| | ((val & (uint64_t)0x000000ff00000000ULL) >> 8) |
| | ((val & (uint64_t)0x0000ff0000000000ULL) >> 24) |
| | ((val & (uint64_t)0x00ff000000000000ULL) >> 40) |
| | ((val & (uint64_t)0xff00000000000000ULL) >> 56); |
| } |
| #endif |
| |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| #define le16_to_cpu(x) ((__u16)(x)) |
| #define le32_to_cpu(x) ((__u32)(x)) |
| #define le64_to_cpu(x) ((__u64)(x)) |
| #define cpu_to_le16(x) ((__u16)(x)) |
| #define cpu_to_le32(x) ((__u32)(x)) |
| #define cpu_to_le64(x) ((__u64)(x)) |
| #elif __BYTE_ORDER == __BIG_ENDIAN |
| #define le16_to_cpu(x) bswap_16(x) |
| #define le32_to_cpu(x) bswap_32(x) |
| #define le64_to_cpu(x) bswap_64(x) |
| #define cpu_to_le16(x) bswap_16(x) |
| #define cpu_to_le32(x) bswap_32(x) |
| #define cpu_to_le64(x) bswap_64(x) |
| #endif |
| |
| #define typecheck(type,x) \ |
| ({ type __dummy; \ |
| typeof(x) __dummy2; \ |
| (void)(&__dummy == &__dummy2); \ |
| 1; \ |
| }) |
| |
| #define NULL_SEGNO ((unsigned int)~0) |
| |
| /* |
| * Debugging interfaces |
| */ |
| #define FIX_MSG(fmt, ...) \ |
| do { \ |
| printf("[FIX] (%s:%4d) ", __func__, __LINE__); \ |
| printf(" --> "fmt"\n", ##__VA_ARGS__); \ |
| } while (0) |
| |
| #define ASSERT_MSG(fmt, ...) \ |
| do { \ |
| printf("[ASSERT] (%s:%4d) ", __func__, __LINE__); \ |
| printf(" --> "fmt"\n", ##__VA_ARGS__); \ |
| c.bug_on = 1; \ |
| } while (0) |
| |
| #define ASSERT(exp) \ |
| do { \ |
| if (!(exp)) { \ |
| printf("[ASSERT] (%s:%4d) %s\n", \ |
| __func__, __LINE__, #exp); \ |
| exit(-1); \ |
| } \ |
| } while (0) |
| |
| #define ERR_MSG(fmt, ...) \ |
| do { \ |
| printf("[%s:%d] " fmt, __func__, __LINE__, ##__VA_ARGS__); \ |
| } while (0) |
| |
| #define MSG(n, fmt, ...) \ |
| do { \ |
| if (c.dbg_lv >= n && !c.layout && !c.show_file_map) { \ |
| printf(fmt, ##__VA_ARGS__); \ |
| } \ |
| } while (0) |
| |
| #define DBG(n, fmt, ...) \ |
| do { \ |
| if (c.dbg_lv >= n && !c.layout && !c.show_file_map) { \ |
| printf("[%s:%4d] " fmt, \ |
| __func__, __LINE__, ##__VA_ARGS__); \ |
| } \ |
| } while (0) |
| |
| /* Display on console */ |
| #define DISP(fmt, ptr, member) \ |
| do { \ |
| printf("%-30s" fmt, #member, ((ptr)->member)); \ |
| } while (0) |
| |
| #define DISP_u16(ptr, member) \ |
| do { \ |
| assert(sizeof((ptr)->member) == 2); \ |
| if (c.layout) \ |
| printf("%-30s %u\n", \ |
| #member":", le16_to_cpu(((ptr)->member))); \ |
| else \ |
| printf("%-30s" "\t\t[0x%8x : %u]\n", \ |
| #member, le16_to_cpu(((ptr)->member)), \ |
| le16_to_cpu(((ptr)->member))); \ |
| } while (0) |
| |
| #define DISP_u32(ptr, member) \ |
| do { \ |
| assert(sizeof((ptr)->member) <= 4); \ |
| if (c.layout) \ |
| printf("%-30s %u\n", \ |
| #member":", le32_to_cpu(((ptr)->member))); \ |
| else \ |
| printf("%-30s" "\t\t[0x%8x : %u]\n", \ |
| #member, le32_to_cpu(((ptr)->member)), \ |
| le32_to_cpu(((ptr)->member))); \ |
| } while (0) |
| |
| #define DISP_u64(ptr, member) \ |
| do { \ |
| assert(sizeof((ptr)->member) == 8); \ |
| if (c.layout) \ |
| printf("%-30s %llu\n", \ |
| #member":", le64_to_cpu(((ptr)->member))); \ |
| else \ |
| printf("%-30s" "\t\t[0x%8llx : %llu]\n", \ |
| #member, le64_to_cpu(((ptr)->member)), \ |
| le64_to_cpu(((ptr)->member))); \ |
| } while (0) |
| |
| #define DISP_utf(ptr, member) \ |
| do { \ |
| if (c.layout) \ |
| printf("%-30s %s\n", #member":", \ |
| ((ptr)->member)); \ |
| else \ |
| printf("%-30s" "\t\t[%s]\n", #member, \ |
| ((ptr)->member)); \ |
| } while (0) |
| |
| /* Display to buffer */ |
| #define BUF_DISP_u32(buf, data, len, ptr, member) \ |
| do { \ |
| assert(sizeof((ptr)->member) <= 4); \ |
| snprintf(buf, len, #member); \ |
| snprintf(data, len, "0x%x : %u", ((ptr)->member), \ |
| ((ptr)->member)); \ |
| } while (0) |
| |
| #define BUF_DISP_u64(buf, data, len, ptr, member) \ |
| do { \ |
| assert(sizeof((ptr)->member) == 8); \ |
| snprintf(buf, len, #member); \ |
| snprintf(data, len, "0x%llx : %llu", ((ptr)->member), \ |
| ((ptr)->member)); \ |
| } while (0) |
| |
| #define BUF_DISP_utf(buf, data, len, ptr, member) \ |
| snprintf(buf, len, #member) |
| |
| /* these are defined in kernel */ |
| #ifndef PAGE_SIZE |
| #define PAGE_SIZE 4096 |
| #endif |
| #define PAGE_CACHE_SIZE 4096 |
| #define BITS_PER_BYTE 8 |
| #ifndef SECTOR_SHIFT |
| #define SECTOR_SHIFT 9 |
| #endif |
| #define F2FS_SUPER_MAGIC 0xF2F52010 /* F2FS Magic Number */ |
| #define CP_CHKSUM_OFFSET 4092 |
| #define SB_CHKSUM_OFFSET 3068 |
| #define MAX_PATH_LEN 64 |
| #define MAX_DEVICES 8 |
| |
| #define F2FS_BYTES_TO_BLK(bytes) ((bytes) >> F2FS_BLKSIZE_BITS) |
| #define F2FS_BLKSIZE_BITS 12 |
| |
| /* for mkfs */ |
| #define F2FS_NUMBER_OF_CHECKPOINT_PACK 2 |
| #define DEFAULT_SECTOR_SIZE 512 |
| #define DEFAULT_SECTORS_PER_BLOCK 8 |
| #define DEFAULT_BLOCKS_PER_SEGMENT 512 |
| #define DEFAULT_SEGMENTS_PER_SECTION 1 |
| |
| #define VERSION_LEN 256 |
| #define VERSION_TIMESTAMP_LEN 4 |
| #define VERSION_NAME_LEN (VERSION_LEN - VERSION_TIMESTAMP_LEN) |
| |
| #define LPF "lost+found" |
| |
| enum f2fs_config_func { |
| MKFS, |
| FSCK, |
| DUMP, |
| DEFRAG, |
| RESIZE, |
| SLOAD, |
| LABEL, |
| }; |
| |
| enum default_set { |
| CONF_NONE = 0, |
| CONF_ANDROID, |
| }; |
| |
| struct device_info { |
| char *path; |
| int32_t fd; |
| u_int32_t sector_size; |
| u_int64_t total_sectors; /* got by get_device_info */ |
| u_int64_t start_blkaddr; |
| u_int64_t end_blkaddr; |
| u_int32_t total_segments; |
| |
| /* to handle zone block devices */ |
| int zoned_model; |
| u_int32_t nr_zones; |
| u_int32_t nr_rnd_zones; |
| size_t zone_blocks; |
| size_t *zone_cap_blocks; |
| }; |
| |
| typedef struct { |
| /* Value 0 means no cache, minimum 1024 */ |
| long num_cache_entry; |
| |
| /* Value 0 means always overwrite (no collision allowed). maximum 16 */ |
| unsigned max_hash_collision; |
| |
| bool dbg_en; |
| } dev_cache_config_t; |
| |
| /* f2fs_configration for compression used for sload.f2fs */ |
| typedef struct { |
| void (*init)(struct compress_ctx *cc); |
| int (*compress)(struct compress_ctx *cc); |
| void (*reset)(struct compress_ctx *cc); |
| } compress_ops; |
| |
| /* Should be aligned to supported_comp_names and support_comp_ops */ |
| enum compress_algorithms { |
| COMPR_LZO, |
| COMPR_LZ4, |
| MAX_COMPRESS_ALGS, |
| }; |
| |
| enum filter_policy { |
| COMPR_FILTER_UNASSIGNED = 0, |
| COMPR_FILTER_ALLOW, |
| COMPR_FILTER_DENY, |
| }; |
| |
| typedef struct { |
| void (*add)(const char *); |
| void (*destroy)(void); |
| bool (*filter)(const char *); |
| } filter_ops; |
| |
| typedef struct { |
| bool enabled; /* disabled by default */ |
| bool required; /* require to enable */ |
| bool readonly; /* readonly to release blocks */ |
| struct compress_ctx cc; /* work context */ |
| enum compress_algorithms alg; /* algorithm to compress */ |
| compress_ops *ops; /* ops per algorithm */ |
| unsigned int min_blocks; /* save more blocks than this */ |
| enum filter_policy filter; /* filter to try compression */ |
| filter_ops *filter_ops; /* filter ops */ |
| } compress_config_t; |
| |
| #define ALIGN_DOWN(addrs, size) (((addrs) / (size)) * (size)) |
| #define ALIGN_UP(addrs, size) ALIGN_DOWN(((addrs) + (size) - 1), (size)) |
| |
| struct f2fs_configuration { |
| u_int32_t reserved_segments; |
| u_int32_t new_reserved_segments; |
| int sparse_mode; |
| int zoned_mode; |
| int zoned_model; |
| size_t zone_blocks; |
| double overprovision; |
| double new_overprovision; |
| u_int32_t cur_seg[6]; |
| u_int32_t segs_per_sec; |
| u_int32_t secs_per_zone; |
| u_int32_t segs_per_zone; |
| u_int32_t start_sector; |
| u_int32_t total_segments; |
| u_int32_t sector_size; |
| u_int64_t device_size; |
| u_int64_t total_sectors; |
| u_int64_t wanted_total_sectors; |
| u_int64_t wanted_sector_size; |
| u_int64_t target_sectors; |
| u_int64_t max_size; |
| u_int32_t sectors_per_blk; |
| u_int32_t blks_per_seg; |
| __u8 init_version[VERSION_LEN + 1]; |
| __u8 sb_version[VERSION_LEN + 1]; |
| __u8 version[VERSION_LEN + 1]; |
| char *vol_label; |
| char *vol_uuid; |
| u_int16_t s_encoding; |
| u_int16_t s_encoding_flags; |
| int heap; |
| int32_t kd; |
| int32_t dump_fd; |
| struct device_info devices[MAX_DEVICES]; |
| int ndevs; |
| char *extension_list[2]; |
| const char *rootdev_name; |
| int dbg_lv; |
| int show_dentry; |
| int trim; |
| int trimmed; |
| int func; |
| void *private; |
| int dry_run; |
| int no_kernel_check; |
| int fix_on; |
| int force; |
| int defset; |
| int bug_on; |
| int bug_nat_bits; |
| bool quota_fixed; |
| int alloc_failed; |
| int auto_fix; |
| int layout; |
| int show_file_map; |
| u64 show_file_map_max_offset; |
| int quota_fix; |
| int preen_mode; |
| int ro; |
| int preserve_limits; /* preserve quota limits */ |
| int large_nat_bitmap; |
| int fix_chksum; /* fix old cp.chksum position */ |
| __le32 feature; /* defined features */ |
| unsigned int quota_bits; /* quota bits */ |
| time_t fixed_time; |
| |
| /* mkfs parameters */ |
| int fake_seed; |
| u_int32_t next_free_nid; |
| u_int32_t quota_inum; |
| u_int32_t quota_dnum; |
| u_int32_t lpf_inum; |
| u_int32_t lpf_dnum; |
| u_int32_t lpf_ino; |
| u_int32_t root_uid; |
| u_int32_t root_gid; |
| |
| /* defragmentation parameters */ |
| int defrag_shrink; |
| u_int64_t defrag_start; |
| u_int64_t defrag_len; |
| u_int64_t defrag_target; |
| |
| /* sload parameters */ |
| char *from_dir; |
| char *mount_point; |
| char *target_out_dir; |
| char *fs_config_file; |
| #ifdef HAVE_LIBSELINUX |
| struct selinux_opt seopt_file[8]; |
| int nr_opt; |
| #endif |
| int preserve_perms; |
| |
| /* resize parameters */ |
| int safe_resize; |
| |
| /* precomputed fs UUID checksum for seeding other checksums */ |
| u_int32_t chksum_seed; |
| |
| /* cache parameters */ |
| dev_cache_config_t cache_config; |
| |
| /* compression support for sload.f2fs */ |
| compress_config_t compress; |
| }; |
| |
| #ifdef CONFIG_64BIT |
| #define BITS_PER_LONG 64 |
| #else |
| #define BITS_PER_LONG 32 |
| #endif |
| |
| #define BIT_MASK(nr) (1 << (nr % BITS_PER_LONG)) |
| #define BIT_WORD(nr) (nr / BITS_PER_LONG) |
| |
| #define set_sb_le64(member, val) (sb->member = cpu_to_le64(val)) |
| #define set_sb_le32(member, val) (sb->member = cpu_to_le32(val)) |
| #define set_sb_le16(member, val) (sb->member = cpu_to_le16(val)) |
| #define get_sb_le64(member) le64_to_cpu(sb->member) |
| #define get_sb_le32(member) le32_to_cpu(sb->member) |
| #define get_sb_le16(member) le16_to_cpu(sb->member) |
| #define get_newsb_le64(member) le64_to_cpu(new_sb->member) |
| #define get_newsb_le32(member) le32_to_cpu(new_sb->member) |
| #define get_newsb_le16(member) le16_to_cpu(new_sb->member) |
| |
| #define set_sb(member, val) \ |
| do { \ |
| typeof(sb->member) t; \ |
| switch (sizeof(t)) { \ |
| case 8: set_sb_le64(member, val); break; \ |
| case 4: set_sb_le32(member, val); break; \ |
| case 2: set_sb_le16(member, val); break; \ |
| } \ |
| } while(0) |
| |
| #define get_sb(member) \ |
| ({ \ |
| typeof(sb->member) t; \ |
| switch (sizeof(t)) { \ |
| case 8: t = get_sb_le64(member); break; \ |
| case 4: t = get_sb_le32(member); break; \ |
| case 2: t = get_sb_le16(member); break; \ |
| } \ |
| t; \ |
| }) |
| #define get_newsb(member) \ |
| ({ \ |
| typeof(new_sb->member) t; \ |
| switch (sizeof(t)) { \ |
| case 8: t = get_newsb_le64(member); break; \ |
| case 4: t = get_newsb_le32(member); break; \ |
| case 2: t = get_newsb_le16(member); break; \ |
| } \ |
| t; \ |
| }) |
| |
| #define set_cp_le64(member, val) (cp->member = cpu_to_le64(val)) |
| #define set_cp_le32(member, val) (cp->member = cpu_to_le32(val)) |
| #define set_cp_le16(member, val) (cp->member = cpu_to_le16(val)) |
| #define get_cp_le64(member) le64_to_cpu(cp->member) |
| #define get_cp_le32(member) le32_to_cpu(cp->member) |
| #define get_cp_le16(member) le16_to_cpu(cp->member) |
| |
| #define set_cp(member, val) \ |
| do { \ |
| typeof(cp->member) t; \ |
| switch (sizeof(t)) { \ |
| case 8: set_cp_le64(member, val); break; \ |
| case 4: set_cp_le32(member, val); break; \ |
| case 2: set_cp_le16(member, val); break; \ |
| } \ |
| } while(0) |
| |
| #define get_cp(member) \ |
| ({ \ |
| typeof(cp->member) t; \ |
| switch (sizeof(t)) { \ |
| case 8: t = get_cp_le64(member); break; \ |
| case 4: t = get_cp_le32(member); break; \ |
| case 2: t = get_cp_le16(member); break; \ |
| } \ |
| t; \ |
| }) |
| |
| /* |
| * Copied from include/linux/kernel.h |
| */ |
| #define __round_mask(x, y) ((__typeof__(x))((y)-1)) |
| #define round_down(x, y) ((x) & ~__round_mask(x, y)) |
| |
| #define min(x, y) ({ \ |
| typeof(x) _min1 = (x); \ |
| typeof(y) _min2 = (y); \ |
| (void) (&_min1 == &_min2); \ |
| _min1 < _min2 ? _min1 : _min2; }) |
| |
| #define max(x, y) ({ \ |
| typeof(x) _max1 = (x); \ |
| typeof(y) _max2 = (y); \ |
| (void) (&_max1 == &_max2); \ |
| _max1 > _max2 ? _max1 : _max2; }) |
| |
| #define round_up(x, y) (((x) + (y) - 1) / (y)) |
| /* |
| * Copied from fs/f2fs/f2fs.h |
| */ |
| #define NR_CURSEG_DATA_TYPE (3) |
| #define NR_CURSEG_NODE_TYPE (3) |
| #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) |
| |
| enum { |
| CURSEG_HOT_DATA = 0, /* directory entry blocks */ |
| CURSEG_WARM_DATA, /* data blocks */ |
| CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ |
| CURSEG_HOT_NODE, /* direct node blocks of directory files */ |
| CURSEG_WARM_NODE, /* direct node blocks of normal files */ |
| CURSEG_COLD_NODE, /* indirect node blocks */ |
| NO_CHECK_TYPE |
| }; |
| |
| #define F2FS_MIN_SEGMENTS 9 /* SB + 2 (CP + SIT + NAT) + SSA + MAIN */ |
| |
| /* |
| * Copied from fs/f2fs/segment.h |
| */ |
| #define GET_SUM_TYPE(footer) ((footer)->entry_type) |
| #define SET_SUM_TYPE(footer, type) ((footer)->entry_type = type) |
| |
| /* |
| * Copied from include/linux/f2fs_sb.h |
| */ |
| #define F2FS_SUPER_OFFSET 1024 /* byte-size offset */ |
| #define F2FS_MIN_LOG_SECTOR_SIZE 9 /* 9 bits for 512 bytes */ |
| #define F2FS_MAX_LOG_SECTOR_SIZE 12 /* 12 bits for 4096 bytes */ |
| #define F2FS_BLKSIZE 4096 /* support only 4KB block */ |
| #define F2FS_MAX_EXTENSION 64 /* # of extension entries */ |
| #define F2FS_EXTENSION_LEN 8 /* max size of extension */ |
| #define F2FS_BLK_ALIGN(x) (((x) + F2FS_BLKSIZE - 1) / F2FS_BLKSIZE) |
| |
| #define NULL_ADDR 0x0U |
| #define NEW_ADDR -1U |
| #define COMPRESS_ADDR -2U |
| |
| #define F2FS_ROOT_INO(sbi) (sbi->root_ino_num) |
| #define F2FS_NODE_INO(sbi) (sbi->node_ino_num) |
| #define F2FS_META_INO(sbi) (sbi->meta_ino_num) |
| |
| #define F2FS_MAX_QUOTAS 3 |
| #define QUOTA_DATA(i) (2) |
| #define QUOTA_INO(sb,t) (le32_to_cpu((sb)->qf_ino[t])) |
| |
| #define FS_IMMUTABLE_FL 0x00000010 /* Immutable file */ |
| |
| #define F2FS_ENC_UTF8_12_1 1 |
| #define F2FS_ENC_STRICT_MODE_FL (1 << 0) |
| |
| /* This flag is used by node and meta inodes, and by recovery */ |
| #define GFP_F2FS_ZERO (GFP_NOFS | __GFP_ZERO) |
| |
| /* |
| * For further optimization on multi-head logs, on-disk layout supports maximum |
| * 16 logs by default. The number, 16, is expected to cover all the cases |
| * enoughly. The implementaion currently uses no more than 6 logs. |
| * Half the logs are used for nodes, and the other half are used for data. |
| */ |
| #define MAX_ACTIVE_LOGS 16 |
| #define MAX_ACTIVE_NODE_LOGS 8 |
| #define MAX_ACTIVE_DATA_LOGS 8 |
| |
| #define F2FS_FEATURE_ENCRYPT 0x0001 |
| #define F2FS_FEATURE_BLKZONED 0x0002 |
| #define F2FS_FEATURE_ATOMIC_WRITE 0x0004 |
| #define F2FS_FEATURE_EXTRA_ATTR 0x0008 |
| #define F2FS_FEATURE_PRJQUOTA 0x0010 |
| #define F2FS_FEATURE_INODE_CHKSUM 0x0020 |
| #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040 |
| #define F2FS_FEATURE_QUOTA_INO 0x0080 |
| #define F2FS_FEATURE_INODE_CRTIME 0x0100 |
| #define F2FS_FEATURE_LOST_FOUND 0x0200 |
| #define F2FS_FEATURE_VERITY 0x0400 /* reserved */ |
| #define F2FS_FEATURE_SB_CHKSUM 0x0800 |
| #define F2FS_FEATURE_CASEFOLD 0x1000 |
| #define F2FS_FEATURE_COMPRESSION 0x2000 |
| #define F2FS_FEATURE_RO 0x4000 |
| |
| #define MAX_VOLUME_NAME 512 |
| |
| /* |
| * For superblock |
| */ |
| #pragma pack(push, 1) |
| struct f2fs_device { |
| __u8 path[MAX_PATH_LEN]; |
| __le32 total_segments; |
| } __attribute__((packed)); |
| |
| struct f2fs_super_block { |
| __le32 magic; /* Magic Number */ |
| __le16 major_ver; /* Major Version */ |
| __le16 minor_ver; /* Minor Version */ |
| __le32 log_sectorsize; /* log2 sector size in bytes */ |
| __le32 log_sectors_per_block; /* log2 # of sectors per block */ |
| __le32 log_blocksize; /* log2 block size in bytes */ |
| __le32 log_blocks_per_seg; /* log2 # of blocks per segment */ |
| __le32 segs_per_sec; /* # of segments per section */ |
| __le32 secs_per_zone; /* # of sections per zone */ |
| __le32 checksum_offset; /* checksum offset inside super block */ |
| __le64 block_count; /* total # of user blocks */ |
| __le32 section_count; /* total # of sections */ |
| __le32 segment_count; /* total # of segments */ |
| __le32 segment_count_ckpt; /* # of segments for checkpoint */ |
| __le32 segment_count_sit; /* # of segments for SIT */ |
| __le32 segment_count_nat; /* # of segments for NAT */ |
| __le32 segment_count_ssa; /* # of segments for SSA */ |
| __le32 segment_count_main; /* # of segments for main area */ |
| __le32 segment0_blkaddr; /* start block address of segment 0 */ |
| __le32 cp_blkaddr; /* start block address of checkpoint */ |
| __le32 sit_blkaddr; /* start block address of SIT */ |
| __le32 nat_blkaddr; /* start block address of NAT */ |
| __le32 ssa_blkaddr; /* start block address of SSA */ |
| __le32 main_blkaddr; /* start block address of main area */ |
| __le32 root_ino; /* root inode number */ |
| __le32 node_ino; /* node inode number */ |
| __le32 meta_ino; /* meta inode number */ |
| __u8 uuid[16]; /* 128-bit uuid for volume */ |
| __le16 volume_name[MAX_VOLUME_NAME]; /* volume name */ |
| __le32 extension_count; /* # of extensions below */ |
| __u8 extension_list[F2FS_MAX_EXTENSION][8]; /* extension array */ |
| __le32 cp_payload; |
| __u8 version[VERSION_LEN]; /* the kernel version */ |
| __u8 init_version[VERSION_LEN]; /* the initial kernel version */ |
| __le32 feature; /* defined features */ |
| __u8 encryption_level; /* versioning level for encryption */ |
| __u8 encrypt_pw_salt[16]; /* Salt used for string2key algorithm */ |
| struct f2fs_device devs[MAX_DEVICES]; /* device list */ |
| __le32 qf_ino[F2FS_MAX_QUOTAS]; /* quota inode numbers */ |
| __u8 hot_ext_count; /* # of hot file extension */ |
| __le16 s_encoding; /* Filename charset encoding */ |
| __le16 s_encoding_flags; /* Filename charset encoding flags */ |
| __u8 reserved[306]; /* valid reserved region */ |
| __le32 crc; /* checksum of superblock */ |
| } __attribute__((packed)); |
| |
| /* |
| * For checkpoint |
| */ |
| #define CP_RESIZEFS_FLAG 0x00004000 |
| #define CP_DISABLED_FLAG 0x00001000 |
| #define CP_QUOTA_NEED_FSCK_FLAG 0x00000800 |
| #define CP_LARGE_NAT_BITMAP_FLAG 0x00000400 |
| #define CP_NOCRC_RECOVERY_FLAG 0x00000200 |
| #define CP_TRIMMED_FLAG 0x00000100 |
| #define CP_NAT_BITS_FLAG 0x00000080 |
| #define CP_CRC_RECOVERY_FLAG 0x00000040 |
| #define CP_FASTBOOT_FLAG 0x00000020 |
| #define CP_FSCK_FLAG 0x00000010 |
| #define CP_ERROR_FLAG 0x00000008 |
| #define CP_COMPACT_SUM_FLAG 0x00000004 |
| #define CP_ORPHAN_PRESENT_FLAG 0x00000002 |
| #define CP_UMOUNT_FLAG 0x00000001 |
| |
| #define F2FS_CP_PACKS 2 /* # of checkpoint packs */ |
| |
| struct f2fs_checkpoint { |
| __le64 checkpoint_ver; /* checkpoint block version number */ |
| __le64 user_block_count; /* # of user blocks */ |
| __le64 valid_block_count; /* # of valid blocks in main area */ |
| __le32 rsvd_segment_count; /* # of reserved segments for gc */ |
| __le32 overprov_segment_count; /* # of overprovision segments */ |
| __le32 free_segment_count; /* # of free segments in main area */ |
| |
| /* information of current node segments */ |
| __le32 cur_node_segno[MAX_ACTIVE_NODE_LOGS]; |
| __le16 cur_node_blkoff[MAX_ACTIVE_NODE_LOGS]; |
| /* information of current data segments */ |
| __le32 cur_data_segno[MAX_ACTIVE_DATA_LOGS]; |
| __le16 cur_data_blkoff[MAX_ACTIVE_DATA_LOGS]; |
| __le32 ckpt_flags; /* Flags : umount and journal_present */ |
| __le32 cp_pack_total_block_count; /* total # of one cp pack */ |
| __le32 cp_pack_start_sum; /* start block number of data summary */ |
| __le32 valid_node_count; /* Total number of valid nodes */ |
| __le32 valid_inode_count; /* Total number of valid inodes */ |
| __le32 next_free_nid; /* Next free node number */ |
| __le32 sit_ver_bitmap_bytesize; /* Default value 64 */ |
| __le32 nat_ver_bitmap_bytesize; /* Default value 256 */ |
| __le32 checksum_offset; /* checksum offset inside cp block */ |
| __le64 elapsed_time; /* mounted time */ |
| /* allocation type of current segment */ |
| unsigned char alloc_type[MAX_ACTIVE_LOGS]; |
| |
| /* SIT and NAT version bitmap */ |
| unsigned char sit_nat_version_bitmap[1]; |
| } __attribute__((packed)); |
| |
| #define CP_BITMAP_OFFSET \ |
| (offsetof(struct f2fs_checkpoint, sit_nat_version_bitmap)) |
| #define CP_MIN_CHKSUM_OFFSET CP_BITMAP_OFFSET |
| |
| #define MIN_NAT_BITMAP_SIZE 64 |
| #define MAX_SIT_BITMAP_SIZE_IN_CKPT \ |
| (CP_CHKSUM_OFFSET - CP_BITMAP_OFFSET - MIN_NAT_BITMAP_SIZE) |
| #define MAX_BITMAP_SIZE_IN_CKPT \ |
| (CP_CHKSUM_OFFSET - CP_BITMAP_OFFSET) |
| |
| /* |
| * For orphan inode management |
| */ |
| #define F2FS_ORPHANS_PER_BLOCK 1020 |
| |
| struct f2fs_orphan_block { |
| __le32 ino[F2FS_ORPHANS_PER_BLOCK]; /* inode numbers */ |
| __le32 reserved; /* reserved */ |
| __le16 blk_addr; /* block index in current CP */ |
| __le16 blk_count; /* Number of orphan inode blocks in CP */ |
| __le32 entry_count; /* Total number of orphan nodes in current CP */ |
| __le32 check_sum; /* CRC32 for orphan inode block */ |
| } __attribute__((packed)); |
| |
| /* |
| * For NODE structure |
| */ |
| struct f2fs_extent { |
| __le32 fofs; /* start file offset of the extent */ |
| __le32 blk_addr; /* start block address of the extent */ |
| __le32 len; /* lengh of the extent */ |
| } __attribute__((packed)); |
| |
| #define F2FS_NAME_LEN 255 |
| |
| /* max output length of pretty_print_filename() including null terminator */ |
| #define F2FS_PRINT_NAMELEN (4 * ((F2FS_NAME_LEN + 2) / 3) + 1) |
| |
| /* 200 bytes for inline xattrs by default */ |
| #define DEFAULT_INLINE_XATTR_ADDRS 50 |
| #define DEF_ADDRS_PER_INODE 923 /* Address Pointers in an Inode */ |
| #define CUR_ADDRS_PER_INODE(inode) (DEF_ADDRS_PER_INODE - \ |
| __get_extra_isize(inode)) |
| #define ADDRS_PER_INODE(i) addrs_per_inode(i) |
| #define DEF_ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */ |
| #define ADDRS_PER_BLOCK(i) addrs_per_block(i) |
| #define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */ |
| |
| #define NODE_DIR1_BLOCK (DEF_ADDRS_PER_INODE + 1) |
| #define NODE_DIR2_BLOCK (DEF_ADDRS_PER_INODE + 2) |
| #define NODE_IND1_BLOCK (DEF_ADDRS_PER_INODE + 3) |
| #define NODE_IND2_BLOCK (DEF_ADDRS_PER_INODE + 4) |
| #define NODE_DIND_BLOCK (DEF_ADDRS_PER_INODE + 5) |
| |
| #define F2FS_INLINE_XATTR 0x01 /* file inline xattr flag */ |
| #define F2FS_INLINE_DATA 0x02 /* file inline data flag */ |
| #define F2FS_INLINE_DENTRY 0x04 /* file inline dentry flag */ |
| #define F2FS_DATA_EXIST 0x08 /* file inline data exist flag */ |
| #define F2FS_INLINE_DOTS 0x10 /* file having implicit dot dentries */ |
| #define F2FS_EXTRA_ATTR 0x20 /* file having extra attribute */ |
| #define F2FS_PIN_FILE 0x40 /* file should not be gced */ |
| #define F2FS_COMPRESS_RELEASED 0x80 /* file released compressed blocks */ |
| |
| #if !defined(offsetof) |
| #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) |
| #endif |
| |
| #define F2FS_EXTRA_ISIZE_OFFSET \ |
| offsetof(struct f2fs_inode, i_extra_isize) |
| #define F2FS_TOTAL_EXTRA_ATTR_SIZE \ |
| (offsetof(struct f2fs_inode, i_extra_end) - F2FS_EXTRA_ISIZE_OFFSET) |
| |
| #define F2FS_DEF_PROJID 0 /* default project ID */ |
| |
| #define MAX_INLINE_DATA(node) (sizeof(__le32) * \ |
| (DEF_ADDRS_PER_INODE - \ |
| get_inline_xattr_addrs(&node->i) - \ |
| get_extra_isize(node) - \ |
| DEF_INLINE_RESERVED_SIZE)) |
| #define DEF_MAX_INLINE_DATA (sizeof(__le32) * \ |
| (DEF_ADDRS_PER_INODE - \ |
| DEFAULT_INLINE_XATTR_ADDRS - \ |
| F2FS_TOTAL_EXTRA_ATTR_SIZE - \ |
| DEF_INLINE_RESERVED_SIZE)) |
| #define INLINE_DATA_OFFSET (PAGE_CACHE_SIZE - sizeof(struct node_footer) \ |
| - sizeof(__le32)*(DEF_ADDRS_PER_INODE + 5 - \ |
| DEF_INLINE_RESERVED_SIZE)) |
| |
| #define DEF_DIR_LEVEL 0 |
| |
| /* |
| * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. |
| */ |
| #define FADVISE_COLD_BIT 0x01 |
| #define FADVISE_LOST_PINO_BIT 0x02 |
| #define FADVISE_ENCRYPT_BIT 0x04 |
| #define FADVISE_ENC_NAME_BIT 0x08 |
| #define FADVISE_KEEP_SIZE_BIT 0x10 |
| #define FADVISE_HOT_BIT 0x20 |
| #define FADVISE_VERITY_BIT 0x40 /* reserved */ |
| |
| #define file_is_encrypt(fi) ((fi)->i_advise & FADVISE_ENCRYPT_BIT) |
| #define file_enc_name(fi) ((fi)->i_advise & FADVISE_ENC_NAME_BIT) |
| |
| #define F2FS_CASEFOLD_FL 0x40000000 /* Casefolded file */ |
| #define IS_CASEFOLDED(dir) ((dir)->i_flags & F2FS_CASEFOLD_FL) |
| |
| /* |
| * fsck i_compr_blocks counting helper |
| */ |
| struct f2fs_compr_blk_cnt { |
| /* counting i_compr_blocks, init 0 */ |
| u32 cnt; |
| |
| /* |
| * previous seen compression header (COMPR_ADDR) page offsets, |
| * use CHEADER_PGOFS_NONE for none |
| */ |
| u32 cheader_pgofs; |
| }; |
| #define CHEADER_PGOFS_NONE ((u32)-(1 << MAX_COMPRESS_LOG_SIZE)) |
| |
| /* |
| * inode flags |
| */ |
| #define F2FS_COMPR_FL 0x00000004 /* Compress file */ |
| struct f2fs_inode { |
| __le16 i_mode; /* file mode */ |
| __u8 i_advise; /* file hints */ |
| __u8 i_inline; /* file inline flags */ |
| __le32 i_uid; /* user ID */ |
| __le32 i_gid; /* group ID */ |
| __le32 i_links; /* links count */ |
| __le64 i_size; /* file size in bytes */ |
| __le64 i_blocks; /* file size in blocks */ |
| __le64 i_atime; /* access time */ |
| __le64 i_ctime; /* change time */ |
| __le64 i_mtime; /* modification time */ |
| __le32 i_atime_nsec; /* access time in nano scale */ |
| __le32 i_ctime_nsec; /* change time in nano scale */ |
| __le32 i_mtime_nsec; /* modification time in nano scale */ |
| __le32 i_generation; /* file version (for NFS) */ |
| union { |
| __le32 i_current_depth; /* only for directory depth */ |
| __le16 i_gc_failures; /* |
| * # of gc failures on pinned file. |
| * only for regular files. |
| */ |
| }; |
| __le32 i_xattr_nid; /* nid to save xattr */ |
| __le32 i_flags; /* file attributes */ |
| __le32 i_pino; /* parent inode number */ |
| __le32 i_namelen; /* file name length */ |
| __u8 i_name[F2FS_NAME_LEN]; /* file name for SPOR */ |
| __u8 i_dir_level; /* dentry_level for large dir */ |
| |
| struct f2fs_extent i_ext; /* caching a largest extent */ |
| |
| union { |
| struct { |
| __le16 i_extra_isize; /* extra inode attribute size */ |
| __le16 i_inline_xattr_size; /* inline xattr size, unit: 4 bytes */ |
| __le32 i_projid; /* project id */ |
| __le32 i_inode_checksum;/* inode meta checksum */ |
| __le64 i_crtime; /* creation time */ |
| __le32 i_crtime_nsec; /* creation time in nano scale */ |
| __le64 i_compr_blocks; /* # of compressed blocks */ |
| __u8 i_compress_algrithm; /* compress algrithm */ |
| __u8 i_log_cluster_size; /* log of cluster size */ |
| __le16 i_padding; /* padding */ |
| __le32 i_extra_end[0]; /* for attribute size calculation */ |
| } __attribute__((packed)); |
| __le32 i_addr[DEF_ADDRS_PER_INODE]; /* Pointers to data blocks */ |
| }; |
| __le32 i_nid[5]; /* direct(2), indirect(2), |
| double_indirect(1) node id */ |
| } __attribute__((packed)); |
| |
| |
| struct direct_node { |
| __le32 addr[DEF_ADDRS_PER_BLOCK]; /* array of data block address */ |
| } __attribute__((packed)); |
| |
| struct indirect_node { |
| __le32 nid[NIDS_PER_BLOCK]; /* array of data block address */ |
| } __attribute__((packed)); |
| |
| enum { |
| COLD_BIT_SHIFT = 0, |
| FSYNC_BIT_SHIFT, |
| DENT_BIT_SHIFT, |
| OFFSET_BIT_SHIFT |
| }; |
| |
| #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ |
| >> OFFSET_BIT_SHIFT) |
| struct node_footer { |
| __le32 nid; /* node id */ |
| __le32 ino; /* inode nunmber */ |
| __le32 flag; /* include cold/fsync/dentry marks and offset */ |
| __le64 cp_ver; /* checkpoint version */ |
| __le32 next_blkaddr; /* next node page block address */ |
| } __attribute__((packed)); |
| |
| struct f2fs_node { |
| /* can be one of three types: inode, direct, and indirect types */ |
| union { |
| struct f2fs_inode i; |
| struct direct_node dn; |
| struct indirect_node in; |
| }; |
| struct node_footer footer; |
| } __attribute__((packed)); |
| |
| /* |
| * For NAT entries |
| */ |
| #define NAT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_nat_entry)) |
| #define NAT_BLOCK_OFFSET(start_nid) (start_nid / NAT_ENTRY_PER_BLOCK) |
| |
| #define DEFAULT_NAT_ENTRY_RATIO 20 |
| |
| struct f2fs_nat_entry { |
| __u8 version; /* latest version of cached nat entry */ |
| __le32 ino; /* inode number */ |
| __le32 block_addr; /* block address */ |
| } __attribute__((packed)); |
| |
| struct f2fs_nat_block { |
| struct f2fs_nat_entry entries[NAT_ENTRY_PER_BLOCK]; |
| } __attribute__((packed)); |
| |
| /* |
| * For SIT entries |
| * |
| * Each segment is 2MB in size by default so that a bitmap for validity of |
| * there-in blocks should occupy 64 bytes, 512 bits. |
| * Not allow to change this. |
| */ |
| #define SIT_VBLOCK_MAP_SIZE 64 |
| #define SIT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_sit_entry)) |
| |
| /* |
| * F2FS uses 4 bytes to represent block address. As a result, supported size of |
| * disk is 16 TB and it equals to 16 * 1024 * 1024 / 2 segments. |
| */ |
| #define F2FS_MIN_SEGMENT 9 /* SB + 2 (CP + SIT + NAT) + SSA + MAIN */ |
| #define F2FS_MAX_SEGMENT ((16 * 1024 * 1024) / 2) |
| #define MAX_SIT_BITMAP_SIZE (SEG_ALIGN(SIZE_ALIGN(F2FS_MAX_SEGMENT, \ |
| SIT_ENTRY_PER_BLOCK)) * \ |
| c.blks_per_seg / 8) |
| |
| /* |
| * Note that f2fs_sit_entry->vblocks has the following bit-field information. |
| * [15:10] : allocation type such as CURSEG_XXXX_TYPE |
| * [9:0] : valid block count |
| */ |
| #define SIT_VBLOCKS_SHIFT 10 |
| #define SIT_VBLOCKS_MASK ((1 << SIT_VBLOCKS_SHIFT) - 1) |
| #define GET_SIT_VBLOCKS(raw_sit) \ |
| (le16_to_cpu((raw_sit)->vblocks) & SIT_VBLOCKS_MASK) |
| #define GET_SIT_TYPE(raw_sit) \ |
| ((le16_to_cpu((raw_sit)->vblocks) & ~SIT_VBLOCKS_MASK) \ |
| >> SIT_VBLOCKS_SHIFT) |
| |
| struct f2fs_sit_entry { |
| __le16 vblocks; /* reference above */ |
| __u8 valid_map[SIT_VBLOCK_MAP_SIZE]; /* bitmap for valid blocks */ |
| __le64 mtime; /* segment age for cleaning */ |
| } __attribute__((packed)); |
| |
| struct f2fs_sit_block { |
| struct f2fs_sit_entry entries[SIT_ENTRY_PER_BLOCK]; |
| } __attribute__((packed)); |
| |
| /* |
| * For segment summary |
| * |
| * One summary block contains exactly 512 summary entries, which represents |
| * exactly 2MB segment by default. Not allow to change the basic units. |
| * |
| * NOTE: For initializing fields, you must use set_summary |
| * |
| * - If data page, nid represents dnode's nid |
| * - If node page, nid represents the node page's nid. |
| * |
| * The ofs_in_node is used by only data page. It represents offset |
| * from node's page's beginning to get a data block address. |
| * ex) data_blkaddr = (block_t)(nodepage_start_address + ofs_in_node) |
| */ |
| #define ENTRIES_IN_SUM 512 |
| #define SUMMARY_SIZE (7) /* sizeof(struct summary) */ |
| #define SUM_FOOTER_SIZE (5) /* sizeof(struct summary_footer) */ |
| #define SUM_ENTRIES_SIZE (SUMMARY_SIZE * ENTRIES_IN_SUM) |
| |
| /* a summary entry for a 4KB-sized block in a segment */ |
| struct f2fs_summary { |
| __le32 nid; /* parent node id */ |
| union { |
| __u8 reserved[3]; |
| struct { |
| __u8 version; /* node version number */ |
| __le16 ofs_in_node; /* block index in parent node */ |
| } __attribute__((packed)); |
| }; |
| } __attribute__((packed)); |
| |
| /* summary block type, node or data, is stored to the summary_footer */ |
| #define SUM_TYPE_NODE (1) |
| #define SUM_TYPE_DATA (0) |
| |
| struct summary_footer { |
| unsigned char entry_type; /* SUM_TYPE_XXX */ |
| __le32 check_sum; /* summary checksum */ |
| } __attribute__((packed)); |
| |
| #define SUM_JOURNAL_SIZE (F2FS_BLKSIZE - SUM_FOOTER_SIZE -\ |
| SUM_ENTRIES_SIZE) |
| #define NAT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\ |
| sizeof(struct nat_journal_entry)) |
| #define NAT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\ |
| sizeof(struct nat_journal_entry)) |
| #define SIT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\ |
| sizeof(struct sit_journal_entry)) |
| #define SIT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\ |
| sizeof(struct sit_journal_entry)) |
| |
| /* |
| * Reserved area should make size of f2fs_extra_info equals to |
| * that of nat_journal and sit_journal. |
| */ |
| #define EXTRA_INFO_RESERVED (SUM_JOURNAL_SIZE - 2 - 8) |
| |
| /* |
| * frequently updated NAT/SIT entries can be stored in the spare area in |
| * summary blocks |
| */ |
| enum { |
| NAT_JOURNAL = 0, |
| SIT_JOURNAL |
| }; |
| |
| struct nat_journal_entry { |
| __le32 nid; |
| struct f2fs_nat_entry ne; |
| } __attribute__((packed)); |
| |
| struct nat_journal { |
| struct nat_journal_entry entries[NAT_JOURNAL_ENTRIES]; |
| __u8 reserved[NAT_JOURNAL_RESERVED]; |
| } __attribute__((packed)); |
| |
| struct sit_journal_entry { |
| __le32 segno; |
| struct f2fs_sit_entry se; |
| } __attribute__((packed)); |
| |
| struct sit_journal { |
| struct sit_journal_entry entries[SIT_JOURNAL_ENTRIES]; |
| __u8 reserved[SIT_JOURNAL_RESERVED]; |
| } __attribute__((packed)); |
| |
| struct f2fs_extra_info { |
| __le64 kbytes_written; |
| __u8 reserved[EXTRA_INFO_RESERVED]; |
| } __attribute__((packed)); |
| |
| struct f2fs_journal { |
| union { |
| __le16 n_nats; |
| __le16 n_sits; |
| }; |
| /* spare area is used by NAT or SIT journals or extra info */ |
| union { |
| struct nat_journal nat_j; |
| struct sit_journal sit_j; |
| struct f2fs_extra_info info; |
| }; |
| } __attribute__((packed)); |
| |
| /* 4KB-sized summary block structure */ |
| struct f2fs_summary_block { |
| struct f2fs_summary entries[ENTRIES_IN_SUM]; |
| struct f2fs_journal journal; |
| struct summary_footer footer; |
| } __attribute__((packed)); |
| |
| /* |
| * For directory operations |
| */ |
| #define F2FS_DOT_HASH 0 |
| #define F2FS_DDOT_HASH F2FS_DOT_HASH |
| #define F2FS_MAX_HASH (~((0x3ULL) << 62)) |
| #define F2FS_HASH_COL_BIT ((0x1ULL) << 63) |
| |
| typedef __le32 f2fs_hash_t; |
| |
| /* One directory entry slot covers 8bytes-long file name */ |
| #define F2FS_SLOT_LEN 8 |
| #define F2FS_SLOT_LEN_BITS 3 |
| |
| #define GET_DENTRY_SLOTS(x) ((x + F2FS_SLOT_LEN - 1) >> F2FS_SLOT_LEN_BITS) |
| |
| /* the number of dentry in a block */ |
| #define NR_DENTRY_IN_BLOCK 214 |
| |
| /* MAX level for dir lookup */ |
| #define MAX_DIR_HASH_DEPTH 63 |
| |
| /* MAX buckets in one level of dir */ |
| #define MAX_DIR_BUCKETS (1 << ((MAX_DIR_HASH_DEPTH / 2) - 1)) |
| |
| #define SIZE_OF_DIR_ENTRY 11 /* by byte */ |
| #define SIZE_OF_DENTRY_BITMAP ((NR_DENTRY_IN_BLOCK + BITS_PER_BYTE - 1) / \ |
| BITS_PER_BYTE) |
| #define SIZE_OF_RESERVED (PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \ |
| F2FS_SLOT_LEN) * \ |
| NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP)) |
| #define MIN_INLINE_DENTRY_SIZE 40 /* just include '.' and '..' entries */ |
| |
| /* One directory entry slot representing F2FS_SLOT_LEN-sized file name */ |
| struct f2fs_dir_entry { |
| __le32 hash_code; /* hash code of file name */ |
| __le32 ino; /* inode number */ |
| __le16 name_len; /* lengh of file name */ |
| __u8 file_type; /* file type */ |
| } __attribute__((packed)); |
| |
| /* 4KB-sized directory entry block */ |
| struct f2fs_dentry_block { |
| /* validity bitmap for directory entries in each block */ |
| __u8 dentry_bitmap[SIZE_OF_DENTRY_BITMAP]; |
| __u8 reserved[SIZE_OF_RESERVED]; |
| struct f2fs_dir_entry dentry[NR_DENTRY_IN_BLOCK]; |
| __u8 filename[NR_DENTRY_IN_BLOCK][F2FS_SLOT_LEN]; |
| } __attribute__((packed)); |
| #pragma pack(pop) |
| |
| /* for inline stuff */ |
| #define DEF_INLINE_RESERVED_SIZE 1 |
| |
| /* for inline dir */ |
| #define NR_INLINE_DENTRY(node) (MAX_INLINE_DATA(node) * BITS_PER_BYTE / \ |
| ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ |
| BITS_PER_BYTE + 1)) |
| #define INLINE_DENTRY_BITMAP_SIZE(node) ((NR_INLINE_DENTRY(node) + \ |
| BITS_PER_BYTE - 1) / BITS_PER_BYTE) |
| #define INLINE_RESERVED_SIZE(node) (MAX_INLINE_DATA(node) - \ |
| ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ |
| NR_INLINE_DENTRY(node) + \ |
| INLINE_DENTRY_BITMAP_SIZE(node))) |
| |
| /* file types used in inode_info->flags */ |
| enum FILE_TYPE { |
| F2FS_FT_UNKNOWN, |
| F2FS_FT_REG_FILE, |
| F2FS_FT_DIR, |
| F2FS_FT_CHRDEV, |
| F2FS_FT_BLKDEV, |
| F2FS_FT_FIFO, |
| F2FS_FT_SOCK, |
| F2FS_FT_SYMLINK, |
| F2FS_FT_MAX, |
| /* added for fsck */ |
| F2FS_FT_ORPHAN, |
| F2FS_FT_XATTR, |
| F2FS_FT_LAST_FILE_TYPE = F2FS_FT_XATTR, |
| }; |
| |
| #define LINUX_S_IFMT 00170000 |
| #define LINUX_S_IFREG 0100000 |
| #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) |
| |
| /* from f2fs/segment.h */ |
| enum { |
| LFS = 0, |
| SSR |
| }; |
| |
| extern int utf8_to_utf16(u_int16_t *, const char *, size_t, size_t); |
| extern int utf16_to_utf8(char *, const u_int16_t *, size_t, size_t); |
| extern int log_base_2(u_int32_t); |
| extern unsigned int addrs_per_inode(struct f2fs_inode *); |
| extern unsigned int addrs_per_block(struct f2fs_inode *); |
| extern unsigned int f2fs_max_file_offset(struct f2fs_inode *); |
| extern __u32 f2fs_inode_chksum(struct f2fs_node *); |
| extern __u32 f2fs_checkpoint_chksum(struct f2fs_checkpoint *); |
| extern int write_inode(struct f2fs_node *, u64); |
| |
| extern int get_bits_in_byte(unsigned char n); |
| extern int test_and_set_bit_le(u32, u8 *); |
| extern int test_and_clear_bit_le(u32, u8 *); |
| extern int test_bit_le(u32, const u8 *); |
| extern int f2fs_test_bit(unsigned int, const char *); |
| extern int f2fs_set_bit(unsigned int, char *); |
| extern int f2fs_clear_bit(unsigned int, char *); |
| extern u64 find_next_bit_le(const u8 *, u64, u64); |
| extern u64 find_next_zero_bit_le(const u8 *, u64, u64); |
| |
| extern u_int32_t f2fs_cal_crc32(u_int32_t, void *, int); |
| extern int f2fs_crc_valid(u_int32_t blk_crc, void *buf, int len); |
| |
| extern void f2fs_init_configuration(void); |
| extern int f2fs_devs_are_umounted(void); |
| extern int f2fs_dev_is_writable(void); |
| extern int f2fs_dev_is_umounted(char *); |
| extern int f2fs_get_device_info(void); |
| extern int f2fs_get_f2fs_info(void); |
| extern unsigned int calc_extra_isize(void); |
| extern int get_device_info(int); |
| extern int f2fs_init_sparse_file(void); |
| extern void f2fs_release_sparse_resource(void); |
| extern int f2fs_finalize_device(void); |
| extern int f2fs_fsync_device(void); |
| |
| extern void dcache_init(void); |
| extern void dcache_release(void); |
| |
| extern int dev_read(void *, __u64, size_t); |
| #ifdef POSIX_FADV_WILLNEED |
| extern int dev_readahead(__u64, size_t); |
| #else |
| extern int dev_readahead(__u64, size_t UNUSED(len)); |
| #endif |
| extern int dev_write(void *, __u64, size_t); |
| extern int dev_write_block(void *, __u64); |
| extern int dev_write_dump(void *, __u64, size_t); |
| /* All bytes in the buffer must be 0 use dev_fill(). */ |
| extern int dev_fill(void *, __u64, size_t); |
| extern int dev_fill_block(void *, __u64); |
| |
| extern int dev_read_block(void *, __u64); |
| extern int dev_reada_block(__u64); |
| |
| extern int dev_read_version(void *, __u64, size_t); |
| extern void get_kernel_version(__u8 *); |
| extern void get_kernel_uname_version(__u8 *); |
| f2fs_hash_t f2fs_dentry_hash(int, int, const unsigned char *, int); |
| |
| static inline bool f2fs_has_extra_isize(struct f2fs_inode *inode) |
| { |
| return (inode->i_inline & F2FS_EXTRA_ATTR); |
| } |
| |
| static inline int __get_extra_isize(struct f2fs_inode *inode) |
| { |
| if (f2fs_has_extra_isize(inode)) |
| return le16_to_cpu(inode->i_extra_isize) / sizeof(__le32); |
| return 0; |
| } |
| |
| extern struct f2fs_configuration c; |
| static inline int get_inline_xattr_addrs(struct f2fs_inode *inode) |
| { |
| if (c.feature & cpu_to_le32(F2FS_FEATURE_FLEXIBLE_INLINE_XATTR)) |
| return le16_to_cpu(inode->i_inline_xattr_size); |
| else if (inode->i_inline & F2FS_INLINE_XATTR || |
| inode->i_inline & F2FS_INLINE_DENTRY) |
| return DEFAULT_INLINE_XATTR_ADDRS; |
| else |
| return 0; |
| } |
| |
| #define get_extra_isize(node) __get_extra_isize(&node->i) |
| |
| #define F2FS_ZONED_NONE 0 |
| #define F2FS_ZONED_HA 1 |
| #define F2FS_ZONED_HM 2 |
| |
| #ifdef HAVE_LINUX_BLKZONED_H |
| |
| /* Let's just use v2, since v1 should be compatible with v2 */ |
| #define BLK_ZONE_REP_CAPACITY (1 << 0) |
| struct blk_zone_v2 { |
| __u64 start; /* Zone start sector */ |
| __u64 len; /* Zone length in number of sectors */ |
| __u64 wp; /* Zone write pointer position */ |
| __u8 type; /* Zone type */ |
| __u8 cond; /* Zone condition */ |
| __u8 non_seq; /* Non-sequential write resources active */ |
| __u8 reset; /* Reset write pointer recommended */ |
| __u8 resv[4]; |
| __u64 capacity; /* Zone capacity in number of sectors */ |
| __u8 reserved[24]; |
| }; |
| #define blk_zone blk_zone_v2 |
| |
| struct blk_zone_report_v2 { |
| __u64 sector; |
| __u32 nr_zones; |
| __u32 flags; |
| struct blk_zone zones[0]; |
| }; |
| #define blk_zone_report blk_zone_report_v2 |
| |
| #define blk_zone_type(z) (z)->type |
| #define blk_zone_conv(z) ((z)->type == BLK_ZONE_TYPE_CONVENTIONAL) |
| #define blk_zone_seq_req(z) ((z)->type == BLK_ZONE_TYPE_SEQWRITE_REQ) |
| #define blk_zone_seq_pref(z) ((z)->type == BLK_ZONE_TYPE_SEQWRITE_PREF) |
| #define blk_zone_seq(z) (blk_zone_seq_req(z) || blk_zone_seq_pref(z)) |
| |
| static inline const char * |
| blk_zone_type_str(struct blk_zone *blkz) |
| { |
| switch (blk_zone_type(blkz)) { |
| case BLK_ZONE_TYPE_CONVENTIONAL: |
| return( "Conventional" ); |
| case BLK_ZONE_TYPE_SEQWRITE_REQ: |
| return( "Sequential-write-required" ); |
| case BLK_ZONE_TYPE_SEQWRITE_PREF: |
| return( "Sequential-write-preferred" ); |
| } |
| return( "Unknown-type" ); |
| } |
| |
| #define blk_zone_cond(z) (z)->cond |
| |
| static inline const char * |
| blk_zone_cond_str(struct blk_zone *blkz) |
| { |
| switch (blk_zone_cond(blkz)) { |
| case BLK_ZONE_COND_NOT_WP: |
| return "Not-write-pointer"; |
| case BLK_ZONE_COND_EMPTY: |
| return "Empty"; |
| case BLK_ZONE_COND_IMP_OPEN: |
| return "Implicit-open"; |
| case BLK_ZONE_COND_EXP_OPEN: |
| return "Explicit-open"; |
| case BLK_ZONE_COND_CLOSED: |
| return "Closed"; |
| case BLK_ZONE_COND_READONLY: |
| return "Read-only"; |
| case BLK_ZONE_COND_FULL: |
| return "Full"; |
| case BLK_ZONE_COND_OFFLINE: |
| return "Offline"; |
| } |
| return "Unknown-cond"; |
| } |
| |
| /* |
| * Handle kernel zone capacity support |
| */ |
| #define blk_zone_empty(z) (blk_zone_cond(z) == BLK_ZONE_COND_EMPTY) |
| #define blk_zone_sector(z) (z)->start |
| #define blk_zone_length(z) (z)->len |
| #define blk_zone_wp_sector(z) (z)->wp |
| #define blk_zone_need_reset(z) (int)(z)->reset |
| #define blk_zone_non_seq(z) (int)(z)->non_seq |
| #define blk_zone_capacity(z, f) ((f & BLK_ZONE_REP_CAPACITY) ? \ |
| (z)->capacity : (z)->len) |
| |
| #endif |
| |
| extern int f2fs_get_zoned_model(int); |
| extern int f2fs_get_zone_blocks(int); |
| extern int f2fs_report_zone(int, u_int64_t, void *); |
| typedef int (report_zones_cb_t)(int i, void *, void *); |
| extern int f2fs_report_zones(int, report_zones_cb_t *, void *); |
| extern int f2fs_check_zones(int); |
| int f2fs_reset_zone(int, void *); |
| extern int f2fs_reset_zones(int); |
| extern uint32_t f2fs_get_usable_segments(struct f2fs_super_block *sb); |
| |
| #define SIZE_ALIGN(val, size) (((val) + (size) - 1) / (size)) |
| #define SEG_ALIGN(blks) SIZE_ALIGN(blks, c.blks_per_seg) |
| #define ZONE_ALIGN(blks) SIZE_ALIGN(blks, c.blks_per_seg * \ |
| c.segs_per_zone) |
| |
| static inline double get_best_overprovision(struct f2fs_super_block *sb) |
| { |
| double reserved, ovp, candidate, end, diff, space; |
| double max_ovp = 0, max_space = 0; |
| u_int32_t usable_main_segs = f2fs_get_usable_segments(sb); |
| |
| if (get_sb(segment_count_main) < 256) { |
| candidate = 10; |
| end = 95; |
| diff = 5; |
| } else { |
| candidate = 0.01; |
| end = 10; |
| diff = 0.01; |
| } |
| |
| for (; candidate <= end; candidate += diff) { |
| reserved = (2 * (100 / candidate + 1) + 6) * |
| round_up(usable_main_segs, get_sb(section_count)); |
| ovp = (usable_main_segs - reserved) * candidate / 100; |
| space = usable_main_segs - reserved - ovp; |
| if (max_space < space) { |
| max_space = space; |
| max_ovp = candidate; |
| } |
| } |
| return max_ovp; |
| } |
| |
| static inline __le64 get_cp_crc(struct f2fs_checkpoint *cp) |
| { |
| u_int64_t cp_ver = get_cp(checkpoint_ver); |
| size_t crc_offset = get_cp(checksum_offset); |
| u_int32_t crc = le32_to_cpu(*(__le32 *)((unsigned char *)cp + |
| crc_offset)); |
| |
| cp_ver |= ((u_int64_t)crc << 32); |
| return cpu_to_le64(cp_ver); |
| } |
| |
| static inline int exist_qf_ino(struct f2fs_super_block *sb) |
| { |
| int i; |
| |
| for (i = 0; i < F2FS_MAX_QUOTAS; i++) |
| if (sb->qf_ino[i]) |
| return 1; |
| return 0; |
| } |
| |
| static inline int is_qf_ino(struct f2fs_super_block *sb, nid_t ino) |
| { |
| int i; |
| |
| for (i = 0; i < F2FS_MAX_QUOTAS; i++) |
| if (sb->qf_ino[i] == ino) |
| return 1; |
| return 0; |
| } |
| |
| static inline void show_version(const char *prog) |
| { |
| #if defined(F2FS_TOOLS_VERSION) && defined(F2FS_TOOLS_DATE) |
| MSG(0, "%s %s (%s)\n", prog, F2FS_TOOLS_VERSION, F2FS_TOOLS_DATE); |
| #else |
| MSG(0, "%s -- version not supported\n", prog); |
| #endif |
| } |
| |
| static inline void f2fs_init_qf_inode(struct f2fs_super_block *sb, |
| struct f2fs_node *raw_node, int qtype, time_t mtime) |
| { |
| raw_node->footer.nid = sb->qf_ino[qtype]; |
| raw_node->footer.ino = sb->qf_ino[qtype]; |
| raw_node->footer.cp_ver = cpu_to_le64(1); |
| raw_node->i.i_mode = cpu_to_le16(0x8180); |
| raw_node->i.i_links = cpu_to_le32(1); |
| raw_node->i.i_uid = cpu_to_le32(c.root_uid); |
| raw_node->i.i_gid = cpu_to_le32(c.root_gid); |
| |
| raw_node->i.i_size = cpu_to_le64(1024 * 6); /* Hard coded */ |
| raw_node->i.i_blocks = cpu_to_le64(1); |
| |
| raw_node->i.i_atime = cpu_to_le32(mtime); |
| raw_node->i.i_atime_nsec = 0; |
| raw_node->i.i_ctime = cpu_to_le32(mtime); |
| raw_node->i.i_ctime_nsec = 0; |
| raw_node->i.i_mtime = cpu_to_le32(mtime); |
| raw_node->i.i_mtime_nsec = 0; |
| raw_node->i.i_generation = 0; |
| raw_node->i.i_xattr_nid = 0; |
| raw_node->i.i_flags = FS_IMMUTABLE_FL; |
| raw_node->i.i_current_depth = cpu_to_le32(0); |
| raw_node->i.i_dir_level = DEF_DIR_LEVEL; |
| |
| if (c.feature & cpu_to_le32(F2FS_FEATURE_EXTRA_ATTR)) { |
| raw_node->i.i_inline = F2FS_EXTRA_ATTR; |
| raw_node->i.i_extra_isize = cpu_to_le16(calc_extra_isize()); |
| } |
| |
| if (c.feature & cpu_to_le32(F2FS_FEATURE_PRJQUOTA)) |
| raw_node->i.i_projid = cpu_to_le32(F2FS_DEF_PROJID); |
| |
| raw_node->i.i_ext.fofs = 0; |
| raw_node->i.i_ext.blk_addr = 0; |
| raw_node->i.i_ext.len = 0; |
| } |
| |
| struct feature { |
| char *name; |
| u32 mask; |
| }; |
| |
| #define INIT_FEATURE_TABLE \ |
| struct feature feature_table[] = { \ |
| { "encrypt", F2FS_FEATURE_ENCRYPT }, \ |
| { "extra_attr", F2FS_FEATURE_EXTRA_ATTR }, \ |
| { "project_quota", F2FS_FEATURE_PRJQUOTA }, \ |
| { "inode_checksum", F2FS_FEATURE_INODE_CHKSUM }, \ |
| { "flexible_inline_xattr", F2FS_FEATURE_FLEXIBLE_INLINE_XATTR },\ |
| { "quota", F2FS_FEATURE_QUOTA_INO }, \ |
| { "inode_crtime", F2FS_FEATURE_INODE_CRTIME }, \ |
| { "lost_found", F2FS_FEATURE_LOST_FOUND }, \ |
| { "verity", F2FS_FEATURE_VERITY }, /* reserved */ \ |
| { "sb_checksum", F2FS_FEATURE_SB_CHKSUM }, \ |
| { "casefold", F2FS_FEATURE_CASEFOLD }, \ |
| { "compression", F2FS_FEATURE_COMPRESSION }, \ |
| { "ro", F2FS_FEATURE_RO}, \ |
| { NULL, 0x0}, \ |
| }; |
| |
| static inline u32 feature_map(struct feature *table, char *feature) |
| { |
| struct feature *p; |
| for (p = table; p->name && strcmp(p->name, feature); p++) |
| ; |
| return p->mask; |
| } |
| |
| static inline int set_feature_bits(struct feature *table, char *features) |
| { |
| u32 mask = feature_map(table, features); |
| if (mask) { |
| c.feature |= cpu_to_le32(mask); |
| } else { |
| MSG(0, "Error: Wrong features %s\n", features); |
| return -1; |
| } |
| return 0; |
| } |
| |
| static inline int parse_feature(struct feature *table, const char *features) |
| { |
| char *buf, *sub, *next; |
| |
| buf = strdup(features); |
| if (!buf) |
| return -1; |
| |
| for (sub = buf; sub && *sub; sub = next ? next + 1 : NULL) { |
| /* Skip the beginning blanks */ |
| while (*sub && *sub == ' ') |
| sub++; |
| next = sub; |
| /* Skip a feature word */ |
| while (*next && *next != ' ' && *next != ',') |
| next++; |
| |
| if (*next == 0) |
| next = NULL; |
| else |
| *next = 0; |
| |
| if (set_feature_bits(table, sub)) { |
| free(buf); |
| return -1; |
| } |
| } |
| free(buf); |
| return 0; |
| } |
| |
| static inline int parse_root_owner(char *ids, |
| u_int32_t *root_uid, u_int32_t *root_gid) |
| { |
| char *uid = ids; |
| char *gid = NULL; |
| int i; |
| |
| /* uid:gid */ |
| for (i = 0; i < strlen(ids) - 1; i++) |
| if (*(ids + i) == ':') |
| gid = ids + i + 1; |
| if (!gid) |
| return -1; |
| |
| *root_uid = atoi(uid); |
| *root_gid = atoi(gid); |
| return 0; |
| } |
| |
| /* |
| * NLS definitions |
| */ |
| struct f2fs_nls_table { |
| int version; |
| const struct f2fs_nls_ops *ops; |
| }; |
| |
| struct f2fs_nls_ops { |
| int (*casefold)(const struct f2fs_nls_table *charset, |
| const unsigned char *str, size_t len, |
| unsigned char *dest, size_t dlen); |
| }; |
| |
| extern const struct f2fs_nls_table *f2fs_load_nls_table(int encoding); |
| #define F2FS_ENC_UTF8_12_0 1 |
| |
| extern int f2fs_str2encoding(const char *string); |
| extern char *f2fs_encoding2str(const int encoding); |
| extern int f2fs_get_encoding_flags(int encoding); |
| extern int f2fs_str2encoding_flags(char **param, __u16 *flags); |
| |
| #endif /*__F2FS_FS_H */ |