nilfs2_ondisk.h revision 96c1db7b9d601c31d103389cac074a6cce0d7633
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 24struct 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 43struct 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 69struct 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 141struct 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}; 149enum { 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) 164struct nilfs_finfo { 165 __le64 fi_ino; 166 __le64 fi_cno; 167 __le32 fi_nblocks; 168 __le32 fi_ndatablk; 169}; 170struct nilfs_binfo_v { 171 __le64 bi_vblocknr; 172 __le64 bi_blkoff; 173}; 174struct nilfs_binfo_dat { 175 __le64 bi_blkoff; 176 __u8 bi_level; 177 __u8 bi_pad[7]; 178}; 179union nilfs_binfo { 180 struct nilfs_binfo_v bi_v; 181 struct nilfs_binfo_dat bi_dat; 182}; 183struct 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 204struct 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 214struct nilfs_direct_node { 215 __u8 dn_flags; 216 __u8 pad[7]; 217}; 218struct nilfs_palloc_group_desc { 219 __le32 pg_nfrees; 220}; 221struct 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 228struct nilfs_snapshot_list { 229 __le64 ssl_next; 230 __le64 ssl_prev; 231}; 232struct 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) 244enum { 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)) 258struct nilfs_segment_usage { 259 __le64 su_lastmod; 260 __le32 su_nblocks; 261 __le32 su_flags; 262}; 263#define NILFS_MIN_SEGMENT_USAGE_SIZE 16 264enum { 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} 276struct 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