1 /* 2 * This file is auto-generated. Modifications will be lost. 3 * 4 * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/ 5 * for more information. 6 */ 7 #ifndef _LINUX_NILFS2_ONDISK_H 8 #define _LINUX_NILFS2_ONDISK_H 9 #include <linux/types.h> 10 #include <linux/magic.h> 11 #include <asm/byteorder.h> 12 #define NILFS_INODE_BMAP_SIZE 7 13 struct nilfs_inode { 14 __le64 i_blocks; 15 __le64 i_size; 16 __le64 i_ctime; 17 __le64 i_mtime; 18 __le32 i_ctime_nsec; 19 __le32 i_mtime_nsec; 20 __le32 i_uid; 21 __le32 i_gid; 22 __le16 i_mode; 23 __le16 i_links_count; 24 __le32 i_flags; 25 __le64 i_bmap[NILFS_INODE_BMAP_SIZE]; 26 #define i_device_code i_bmap[0] 27 __le64 i_xattr; 28 __le32 i_generation; 29 __le32 i_pad; 30 }; 31 #define NILFS_MIN_INODE_SIZE 128 32 struct nilfs_super_root { 33 __le32 sr_sum; 34 __le16 sr_bytes; 35 __le16 sr_flags; 36 __le64 sr_nongc_ctime; 37 struct nilfs_inode sr_dat; 38 struct nilfs_inode sr_cpfile; 39 struct nilfs_inode sr_sufile; 40 }; 41 #define NILFS_SR_MDT_OFFSET(inode_size,i) ((unsigned long) & ((struct nilfs_super_root *) 0)->sr_dat + (inode_size) * (i)) 42 #define NILFS_SR_DAT_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 0) 43 #define NILFS_SR_CPFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 1) 44 #define NILFS_SR_SUFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 2) 45 #define NILFS_SR_BYTES(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 3) 46 #define NILFS_DFL_MAX_MNT_COUNT 50 47 #define NILFS_VALID_FS 0x0001 48 #define NILFS_ERROR_FS 0x0002 49 #define NILFS_RESIZE_FS 0x0004 50 #define NILFS_MOUNT_ERROR_MODE 0x0070 51 #define NILFS_MOUNT_ERRORS_CONT 0x0010 52 #define NILFS_MOUNT_ERRORS_RO 0x0020 53 #define NILFS_MOUNT_ERRORS_PANIC 0x0040 54 #define NILFS_MOUNT_BARRIER 0x1000 55 #define NILFS_MOUNT_STRICT_ORDER 0x2000 56 #define NILFS_MOUNT_NORECOVERY 0x4000 57 #define NILFS_MOUNT_DISCARD 0x8000 58 struct nilfs_super_block { 59 __le32 s_rev_level; 60 __le16 s_minor_rev_level; 61 __le16 s_magic; 62 __le16 s_bytes; 63 __le16 s_flags; 64 __le32 s_crc_seed; 65 __le32 s_sum; 66 __le32 s_log_block_size; 67 __le64 s_nsegments; 68 __le64 s_dev_size; 69 __le64 s_first_data_block; 70 __le32 s_blocks_per_segment; 71 __le32 s_r_segments_percentage; 72 __le64 s_last_cno; 73 __le64 s_last_pseg; 74 __le64 s_last_seq; 75 __le64 s_free_blocks_count; 76 __le64 s_ctime; 77 __le64 s_mtime; 78 __le64 s_wtime; 79 __le16 s_mnt_count; 80 __le16 s_max_mnt_count; 81 __le16 s_state; 82 __le16 s_errors; 83 __le64 s_lastcheck; 84 __le32 s_checkinterval; 85 __le32 s_creator_os; 86 __le16 s_def_resuid; 87 __le16 s_def_resgid; 88 __le32 s_first_ino; 89 __le16 s_inode_size; 90 __le16 s_dat_entry_size; 91 __le16 s_checkpoint_size; 92 __le16 s_segment_usage_size; 93 __u8 s_uuid[16]; 94 char s_volume_name[80]; 95 __le32 s_c_interval; 96 __le32 s_c_block_max; 97 __le64 s_feature_compat; 98 __le64 s_feature_compat_ro; 99 __le64 s_feature_incompat; 100 __u32 s_reserved[186]; 101 }; 102 #define NILFS_OS_LINUX 0 103 #define NILFS_CURRENT_REV 2 104 #define NILFS_MINOR_REV 0 105 #define NILFS_MIN_SUPP_REV 2 106 #define NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 0x00000001ULL 107 #define NILFS_FEATURE_COMPAT_SUPP 0ULL 108 #define NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 109 #define NILFS_FEATURE_INCOMPAT_SUPP 0ULL 110 #define NILFS_SB_BYTES ((long) & ((struct nilfs_super_block *) 0)->s_reserved) 111 #define NILFS_ROOT_INO 2 112 #define NILFS_DAT_INO 3 113 #define NILFS_CPFILE_INO 4 114 #define NILFS_SUFILE_INO 5 115 #define NILFS_IFILE_INO 6 116 #define NILFS_ATIME_INO 7 117 #define NILFS_XATTR_INO 8 118 #define NILFS_SKETCH_INO 10 119 #define NILFS_USER_INO 11 120 #define NILFS_SB_OFFSET_BYTES 1024 121 #define NILFS_SEG_MIN_BLOCKS 16 122 #define NILFS_PSEG_MIN_BLOCKS 2 123 #define NILFS_MIN_NRSVSEGS 8 124 #define NILFS_ROOT_METADATA_FILE(ino) ((ino) >= NILFS_DAT_INO && (ino) <= NILFS_SUFILE_INO) 125 #define NILFS_SB2_OFFSET_BYTES(devsize) ((((devsize) >> 12) - 1) << 12) 126 #define NILFS_LINK_MAX 32000 127 #define NILFS_NAME_LEN 255 128 #define NILFS_MIN_BLOCK_SIZE 1024 129 #define NILFS_MAX_BLOCK_SIZE 65536 130 struct nilfs_dir_entry { 131 __le64 inode; 132 __le16 rec_len; 133 __u8 name_len; 134 __u8 file_type; 135 char name[NILFS_NAME_LEN]; 136 char pad; 137 }; 138 enum { 139 NILFS_FT_UNKNOWN, 140 NILFS_FT_REG_FILE, 141 NILFS_FT_DIR, 142 NILFS_FT_CHRDEV, 143 NILFS_FT_BLKDEV, 144 NILFS_FT_FIFO, 145 NILFS_FT_SOCK, 146 NILFS_FT_SYMLINK, 147 NILFS_FT_MAX 148 }; 149 #define NILFS_DIR_PAD 8 150 #define NILFS_DIR_ROUND (NILFS_DIR_PAD - 1) 151 #define NILFS_DIR_REC_LEN(name_len) (((name_len) + 12 + NILFS_DIR_ROUND) & ~NILFS_DIR_ROUND) 152 #define NILFS_MAX_REC_LEN ((1 << 16) - 1) 153 struct nilfs_finfo { 154 __le64 fi_ino; 155 __le64 fi_cno; 156 __le32 fi_nblocks; 157 __le32 fi_ndatablk; 158 }; 159 struct nilfs_binfo_v { 160 __le64 bi_vblocknr; 161 __le64 bi_blkoff; 162 }; 163 struct nilfs_binfo_dat { 164 __le64 bi_blkoff; 165 __u8 bi_level; 166 __u8 bi_pad[7]; 167 }; 168 union nilfs_binfo { 169 struct nilfs_binfo_v bi_v; 170 struct nilfs_binfo_dat bi_dat; 171 }; 172 struct nilfs_segment_summary { 173 __le32 ss_datasum; 174 __le32 ss_sumsum; 175 __le32 ss_magic; 176 __le16 ss_bytes; 177 __le16 ss_flags; 178 __le64 ss_seq; 179 __le64 ss_create; 180 __le64 ss_next; 181 __le32 ss_nblocks; 182 __le32 ss_nfinfo; 183 __le32 ss_sumbytes; 184 __le32 ss_pad; 185 __le64 ss_cno; 186 }; 187 #define NILFS_SEGSUM_MAGIC 0x1eaffa11 188 #define NILFS_SS_LOGBGN 0x0001 189 #define NILFS_SS_LOGEND 0x0002 190 #define NILFS_SS_SR 0x0004 191 #define NILFS_SS_SYNDT 0x0008 192 #define NILFS_SS_GC 0x0010 193 struct nilfs_btree_node { 194 __u8 bn_flags; 195 __u8 bn_level; 196 __le16 bn_nchildren; 197 __le32 bn_pad; 198 }; 199 #define NILFS_BTREE_NODE_ROOT 0x01 200 #define NILFS_BTREE_LEVEL_DATA 0 201 #define NILFS_BTREE_LEVEL_NODE_MIN (NILFS_BTREE_LEVEL_DATA + 1) 202 #define NILFS_BTREE_LEVEL_MAX 14 203 struct nilfs_direct_node { 204 __u8 dn_flags; 205 __u8 pad[7]; 206 }; 207 struct nilfs_palloc_group_desc { 208 __le32 pg_nfrees; 209 }; 210 struct nilfs_dat_entry { 211 __le64 de_blocknr; 212 __le64 de_start; 213 __le64 de_end; 214 __le64 de_rsv; 215 }; 216 #define NILFS_MIN_DAT_ENTRY_SIZE 32 217 struct nilfs_snapshot_list { 218 __le64 ssl_next; 219 __le64 ssl_prev; 220 }; 221 struct nilfs_checkpoint { 222 __le32 cp_flags; 223 __le32 cp_checkpoints_count; 224 struct nilfs_snapshot_list cp_snapshot_list; 225 __le64 cp_cno; 226 __le64 cp_create; 227 __le64 cp_nblk_inc; 228 __le64 cp_inodes_count; 229 __le64 cp_blocks_count; 230 struct nilfs_inode cp_ifile_inode; 231 }; 232 #define NILFS_MIN_CHECKPOINT_SIZE (64 + NILFS_MIN_INODE_SIZE) 233 enum { 234 NILFS_CHECKPOINT_SNAPSHOT, 235 NILFS_CHECKPOINT_INVALID, 236 NILFS_CHECKPOINT_SKETCH, 237 NILFS_CHECKPOINT_MINOR, 238 }; 239 #define NILFS_CHECKPOINT_FNS(flag,name) static inline void nilfs_checkpoint_set_ ##name(struct nilfs_checkpoint * cp) \ 240 { cp->cp_flags = __cpu_to_le32(__le32_to_cpu(cp->cp_flags) | (1UL << NILFS_CHECKPOINT_ ##flag)); \ 241 } static inline void nilfs_checkpoint_clear_ ##name(struct nilfs_checkpoint * cp) \ 242 { cp->cp_flags = __cpu_to_le32(__le32_to_cpu(cp->cp_flags) & ~(1UL << NILFS_CHECKPOINT_ ##flag)); \ 243 } static inline int nilfs_checkpoint_ ##name(const struct nilfs_checkpoint * cp) \ 244 { return ! ! (__le32_to_cpu(cp->cp_flags) & (1UL << NILFS_CHECKPOINT_ ##flag)); \ 245 } 246 struct nilfs_cpfile_header { 247 __le64 ch_ncheckpoints; 248 __le64 ch_nsnapshots; 249 struct nilfs_snapshot_list ch_snapshot_list; 250 }; 251 #define NILFS_CPFILE_FIRST_CHECKPOINT_OFFSET ((sizeof(struct nilfs_cpfile_header) + sizeof(struct nilfs_checkpoint) - 1) / sizeof(struct nilfs_checkpoint)) 252 struct nilfs_segment_usage { 253 __le64 su_lastmod; 254 __le32 su_nblocks; 255 __le32 su_flags; 256 }; 257 #define NILFS_MIN_SEGMENT_USAGE_SIZE 16 258 enum { 259 NILFS_SEGMENT_USAGE_ACTIVE, 260 NILFS_SEGMENT_USAGE_DIRTY, 261 NILFS_SEGMENT_USAGE_ERROR, 262 }; 263 #define NILFS_SEGMENT_USAGE_FNS(flag,name) static inline void nilfs_segment_usage_set_ ##name(struct nilfs_segment_usage * su) \ 264 { su->su_flags = __cpu_to_le32(__le32_to_cpu(su->su_flags) | (1UL << NILFS_SEGMENT_USAGE_ ##flag)); \ 265 } static inline void nilfs_segment_usage_clear_ ##name(struct nilfs_segment_usage * su) \ 266 { su->su_flags = __cpu_to_le32(__le32_to_cpu(su->su_flags) & ~(1UL << NILFS_SEGMENT_USAGE_ ##flag)); \ 267 } static inline int nilfs_segment_usage_ ##name(const struct nilfs_segment_usage * su) \ 268 { return ! ! (__le32_to_cpu(su->su_flags) & (1UL << NILFS_SEGMENT_USAGE_ ##flag)); \ 269 } 270 struct nilfs_sufile_header { 271 __le64 sh_ncleansegs; 272 __le64 sh_ndirtysegs; 273 __le64 sh_last_alloc; 274 }; 275 #define NILFS_SUFILE_FIRST_SEGMENT_USAGE_OFFSET ((sizeof(struct nilfs_sufile_header) + sizeof(struct nilfs_segment_usage) - 1) / sizeof(struct nilfs_segment_usage)) 276 #endif 277