1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _LINUX_NILFS2_ONDISK_H 20 #define _LINUX_NILFS2_ONDISK_H 21 #include <linux/types.h> 22 #include <linux/magic.h> 23 #define NILFS_INODE_BMAP_SIZE 7 24 struct nilfs_inode { 25 __le64 i_blocks; 26 __le64 i_size; 27 __le64 i_ctime; 28 __le64 i_mtime; 29 __le32 i_ctime_nsec; 30 __le32 i_mtime_nsec; 31 __le32 i_uid; 32 __le32 i_gid; 33 __le16 i_mode; 34 __le16 i_links_count; 35 __le32 i_flags; 36 __le64 i_bmap[NILFS_INODE_BMAP_SIZE]; 37 #define i_device_code i_bmap[0] 38 __le64 i_xattr; 39 __le32 i_generation; 40 __le32 i_pad; 41 }; 42 #define NILFS_MIN_INODE_SIZE 128 43 struct nilfs_super_root { 44 __le32 sr_sum; 45 __le16 sr_bytes; 46 __le16 sr_flags; 47 __le64 sr_nongc_ctime; 48 struct nilfs_inode sr_dat; 49 struct nilfs_inode sr_cpfile; 50 struct nilfs_inode sr_sufile; 51 }; 52 #define NILFS_SR_MDT_OFFSET(inode_size,i) ((unsigned long) & ((struct nilfs_super_root *) 0)->sr_dat + (inode_size) * (i)) 53 #define NILFS_SR_DAT_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 0) 54 #define NILFS_SR_CPFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 1) 55 #define NILFS_SR_SUFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 2) 56 #define NILFS_SR_BYTES(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 3) 57 #define NILFS_DFL_MAX_MNT_COUNT 50 58 #define NILFS_VALID_FS 0x0001 59 #define NILFS_ERROR_FS 0x0002 60 #define NILFS_RESIZE_FS 0x0004 61 #define NILFS_MOUNT_ERROR_MODE 0x0070 62 #define NILFS_MOUNT_ERRORS_CONT 0x0010 63 #define NILFS_MOUNT_ERRORS_RO 0x0020 64 #define NILFS_MOUNT_ERRORS_PANIC 0x0040 65 #define NILFS_MOUNT_BARRIER 0x1000 66 #define NILFS_MOUNT_STRICT_ORDER 0x2000 67 #define NILFS_MOUNT_NORECOVERY 0x4000 68 #define NILFS_MOUNT_DISCARD 0x8000 69 struct nilfs_super_block { 70 __le32 s_rev_level; 71 __le16 s_minor_rev_level; 72 __le16 s_magic; 73 __le16 s_bytes; 74 __le16 s_flags; 75 __le32 s_crc_seed; 76 __le32 s_sum; 77 __le32 s_log_block_size; 78 __le64 s_nsegments; 79 __le64 s_dev_size; 80 __le64 s_first_data_block; 81 __le32 s_blocks_per_segment; 82 __le32 s_r_segments_percentage; 83 __le64 s_last_cno; 84 __le64 s_last_pseg; 85 __le64 s_last_seq; 86 __le64 s_free_blocks_count; 87 __le64 s_ctime; 88 __le64 s_mtime; 89 __le64 s_wtime; 90 __le16 s_mnt_count; 91 __le16 s_max_mnt_count; 92 __le16 s_state; 93 __le16 s_errors; 94 __le64 s_lastcheck; 95 __le32 s_checkinterval; 96 __le32 s_creator_os; 97 __le16 s_def_resuid; 98 __le16 s_def_resgid; 99 __le32 s_first_ino; 100 __le16 s_inode_size; 101 __le16 s_dat_entry_size; 102 __le16 s_checkpoint_size; 103 __le16 s_segment_usage_size; 104 __u8 s_uuid[16]; 105 char s_volume_name[80]; 106 __le32 s_c_interval; 107 __le32 s_c_block_max; 108 __le64 s_feature_compat; 109 __le64 s_feature_compat_ro; 110 __le64 s_feature_incompat; 111 __u32 s_reserved[186]; 112 }; 113 #define NILFS_OS_LINUX 0 114 #define NILFS_CURRENT_REV 2 115 #define NILFS_MINOR_REV 0 116 #define NILFS_MIN_SUPP_REV 2 117 #define NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 0x00000001ULL 118 #define NILFS_FEATURE_COMPAT_SUPP 0ULL 119 #define NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 120 #define NILFS_FEATURE_INCOMPAT_SUPP 0ULL 121 #define NILFS_SB_BYTES ((long) & ((struct nilfs_super_block *) 0)->s_reserved) 122 #define NILFS_ROOT_INO 2 123 #define NILFS_DAT_INO 3 124 #define NILFS_CPFILE_INO 4 125 #define NILFS_SUFILE_INO 5 126 #define NILFS_IFILE_INO 6 127 #define NILFS_ATIME_INO 7 128 #define NILFS_XATTR_INO 8 129 #define NILFS_SKETCH_INO 10 130 #define NILFS_USER_INO 11 131 #define NILFS_SB_OFFSET_BYTES 1024 132 #define NILFS_SEG_MIN_BLOCKS 16 133 #define NILFS_PSEG_MIN_BLOCKS 2 134 #define NILFS_MIN_NRSVSEGS 8 135 #define NILFS_ROOT_METADATA_FILE(ino) ((ino) >= NILFS_DAT_INO && (ino) <= NILFS_SUFILE_INO) 136 #define NILFS_SB2_OFFSET_BYTES(devsize) ((((devsize) >> 12) - 1) << 12) 137 #define NILFS_LINK_MAX 32000 138 #define NILFS_NAME_LEN 255 139 #define NILFS_MIN_BLOCK_SIZE 1024 140 #define NILFS_MAX_BLOCK_SIZE 65536 141 struct nilfs_dir_entry { 142 __le64 inode; 143 __le16 rec_len; 144 __u8 name_len; 145 __u8 file_type; 146 char name[NILFS_NAME_LEN]; 147 char pad; 148 }; 149 enum { 150 NILFS_FT_UNKNOWN, 151 NILFS_FT_REG_FILE, 152 NILFS_FT_DIR, 153 NILFS_FT_CHRDEV, 154 NILFS_FT_BLKDEV, 155 NILFS_FT_FIFO, 156 NILFS_FT_SOCK, 157 NILFS_FT_SYMLINK, 158 NILFS_FT_MAX 159 }; 160 #define NILFS_DIR_PAD 8 161 #define NILFS_DIR_ROUND (NILFS_DIR_PAD - 1) 162 #define NILFS_DIR_REC_LEN(name_len) (((name_len) + 12 + NILFS_DIR_ROUND) & ~NILFS_DIR_ROUND) 163 #define NILFS_MAX_REC_LEN ((1 << 16) - 1) 164 struct nilfs_finfo { 165 __le64 fi_ino; 166 __le64 fi_cno; 167 __le32 fi_nblocks; 168 __le32 fi_ndatablk; 169 }; 170 struct nilfs_binfo_v { 171 __le64 bi_vblocknr; 172 __le64 bi_blkoff; 173 }; 174 struct nilfs_binfo_dat { 175 __le64 bi_blkoff; 176 __u8 bi_level; 177 __u8 bi_pad[7]; 178 }; 179 union nilfs_binfo { 180 struct nilfs_binfo_v bi_v; 181 struct nilfs_binfo_dat bi_dat; 182 }; 183 struct nilfs_segment_summary { 184 __le32 ss_datasum; 185 __le32 ss_sumsum; 186 __le32 ss_magic; 187 __le16 ss_bytes; 188 __le16 ss_flags; 189 __le64 ss_seq; 190 __le64 ss_create; 191 __le64 ss_next; 192 __le32 ss_nblocks; 193 __le32 ss_nfinfo; 194 __le32 ss_sumbytes; 195 __le32 ss_pad; 196 __le64 ss_cno; 197 }; 198 #define NILFS_SEGSUM_MAGIC 0x1eaffa11 199 #define NILFS_SS_LOGBGN 0x0001 200 #define NILFS_SS_LOGEND 0x0002 201 #define NILFS_SS_SR 0x0004 202 #define NILFS_SS_SYNDT 0x0008 203 #define NILFS_SS_GC 0x0010 204 struct nilfs_btree_node { 205 __u8 bn_flags; 206 __u8 bn_level; 207 __le16 bn_nchildren; 208 __le32 bn_pad; 209 }; 210 #define NILFS_BTREE_NODE_ROOT 0x01 211 #define NILFS_BTREE_LEVEL_DATA 0 212 #define NILFS_BTREE_LEVEL_NODE_MIN (NILFS_BTREE_LEVEL_DATA + 1) 213 #define NILFS_BTREE_LEVEL_MAX 14 214 struct nilfs_direct_node { 215 __u8 dn_flags; 216 __u8 pad[7]; 217 }; 218 struct nilfs_palloc_group_desc { 219 __le32 pg_nfrees; 220 }; 221 struct nilfs_dat_entry { 222 __le64 de_blocknr; 223 __le64 de_start; 224 __le64 de_end; 225 __le64 de_rsv; 226 }; 227 #define NILFS_MIN_DAT_ENTRY_SIZE 32 228 struct nilfs_snapshot_list { 229 __le64 ssl_next; 230 __le64 ssl_prev; 231 }; 232 struct nilfs_checkpoint { 233 __le32 cp_flags; 234 __le32 cp_checkpoints_count; 235 struct nilfs_snapshot_list cp_snapshot_list; 236 __le64 cp_cno; 237 __le64 cp_create; 238 __le64 cp_nblk_inc; 239 __le64 cp_inodes_count; 240 __le64 cp_blocks_count; 241 struct nilfs_inode cp_ifile_inode; 242 }; 243 #define NILFS_MIN_CHECKPOINT_SIZE (64 + NILFS_MIN_INODE_SIZE) 244 enum { 245 NILFS_CHECKPOINT_SNAPSHOT, 246 NILFS_CHECKPOINT_INVALID, 247 NILFS_CHECKPOINT_SKETCH, 248 NILFS_CHECKPOINT_MINOR, 249 }; 250 #define NILFS_CHECKPOINT_FNS(flag,name) static inline void nilfs_checkpoint_set_ ##name(struct nilfs_checkpoint * cp) \ 251 { cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) | (1UL << NILFS_CHECKPOINT_ ##flag)); \ 252 } static inline void nilfs_checkpoint_clear_ ##name(struct nilfs_checkpoint * cp) \ 253 { cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) & ~(1UL << NILFS_CHECKPOINT_ ##flag)); \ 254 } static inline int nilfs_checkpoint_ ##name(const struct nilfs_checkpoint * cp) \ 255 { return ! ! (le32_to_cpu(cp->cp_flags) & (1UL << NILFS_CHECKPOINT_ ##flag)); \ 256 } 257 #define NILFS_CPFILE_FIRST_CHECKPOINT_OFFSET ((sizeof(struct nilfs_cpfile_header) + sizeof(struct nilfs_checkpoint) - 1) / sizeof(struct nilfs_checkpoint)) 258 struct nilfs_segment_usage { 259 __le64 su_lastmod; 260 __le32 su_nblocks; 261 __le32 su_flags; 262 }; 263 #define NILFS_MIN_SEGMENT_USAGE_SIZE 16 264 enum { 265 NILFS_SEGMENT_USAGE_ACTIVE, 266 NILFS_SEGMENT_USAGE_DIRTY, 267 NILFS_SEGMENT_USAGE_ERROR, 268 }; 269 #define NILFS_SEGMENT_USAGE_FNS(flag,name) static inline void nilfs_segment_usage_set_ ##name(struct nilfs_segment_usage * su) \ 270 { su->su_flags = cpu_to_le32(le32_to_cpu(su->su_flags) | (1UL << NILFS_SEGMENT_USAGE_ ##flag)); \ 271 } static inline void nilfs_segment_usage_clear_ ##name(struct nilfs_segment_usage * su) \ 272 { su->su_flags = cpu_to_le32(le32_to_cpu(su->su_flags) & ~(1UL << NILFS_SEGMENT_USAGE_ ##flag)); \ 273 } static inline int nilfs_segment_usage_ ##name(const struct nilfs_segment_usage * su) \ 274 { return ! ! (le32_to_cpu(su->su_flags) & (1UL << NILFS_SEGMENT_USAGE_ ##flag)); \ 275 } 276 struct nilfs_sufile_header { 277 __le64 sh_ncleansegs; 278 __le64 sh_ndirtysegs; 279 __le64 sh_last_alloc; 280 }; 281 #define NILFS_SUFILE_FIRST_SEGMENT_USAGE_OFFSET ((sizeof(struct nilfs_sufile_header) + sizeof(struct nilfs_segment_usage) - 1) / sizeof(struct nilfs_segment_usage)) 282 #endif 283
