| ext2fs.h (218273) | ext2fs.h (221126) |
|---|---|
| 1/*- 2 * modified for EXT2FS support in Lites 1.1 3 * 4 * Aug 1995, Godmar Back (gback@cs.utah.edu) 5 * University of Utah, Department of Computer Science 6 * | 1/*- 2 * modified for EXT2FS support in Lites 1.1 3 * 4 * Aug 1995, Godmar Back (gback@cs.utah.edu) 5 * University of Utah, Department of Computer Science 6 * |
| 7 * $FreeBSD: head/sys/fs/ext2fs/ext2fs.h 218273 2011-02-04 14:20:27Z jhb $ | 7 * $FreeBSD: head/sys/fs/ext2fs/ext2fs.h 221126 2011-04-27 18:15:34Z jhb $ |
| 8 */ 9/*- 10 * Copyright (c) 2009 Aditya Sarawgi 11 * All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: --- 44 unchanged lines hidden (view full) --- 60 * the super block for this name. 61 */ 62#define MAXMNTLEN 512 63 64/* 65 * Super block for an ext2fs file system. 66 */ 67struct ext2fs { | 8 */ 9/*- 10 * Copyright (c) 2009 Aditya Sarawgi 11 * All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: --- 44 unchanged lines hidden (view full) --- 60 * the super block for this name. 61 */ 62#define MAXMNTLEN 512 63 64/* 65 * Super block for an ext2fs file system. 66 */ 67struct ext2fs { |
| 68 u_int32_t e2fs_icount; /* Inode count */ 69 u_int32_t e2fs_bcount; /* blocks count */ 70 u_int32_t e2fs_rbcount; /* reserved blocks count */ 71 u_int32_t e2fs_fbcount; /* free blocks count */ 72 u_int32_t e2fs_ficount; /* free inodes count */ 73 u_int32_t e2fs_first_dblock; /* first data block */ 74 u_int32_t e2fs_log_bsize; /* block size = 1024*(2^e2fs_log_bsize) */ 75 u_int32_t e2fs_log_fsize; /* fragment size */ 76 u_int32_t e2fs_bpg; /* blocks per group */ 77 u_int32_t e2fs_fpg; /* frags per group */ 78 u_int32_t e2fs_ipg; /* inodes per group */ 79 u_int32_t e2fs_mtime; /* mount time */ 80 u_int32_t e2fs_wtime; /* write time */ 81 u_int16_t e2fs_mnt_count; /* mount count */ 82 u_int16_t e2fs_max_mnt_count; /* max mount count */ 83 u_int16_t e2fs_magic; /* magic number */ 84 u_int16_t e2fs_state; /* file system state */ 85 u_int16_t e2fs_beh; /* behavior on errors */ 86 u_int16_t e2fs_minrev; /* minor revision level */ 87 u_int32_t e2fs_lastfsck; /* time of last fsck */ 88 u_int32_t e2fs_fsckintv; /* max time between fscks */ 89 u_int32_t e2fs_creator; /* creator OS */ 90 u_int32_t e2fs_rev; /* revision level */ 91 u_int16_t e2fs_ruid; /* default uid for reserved blocks */ 92 u_int16_t e2fs_rgid; /* default gid for reserved blocks */ | 68 uint32_t e2fs_icount; /* Inode count */ 69 uint32_t e2fs_bcount; /* blocks count */ 70 uint32_t e2fs_rbcount; /* reserved blocks count */ 71 uint32_t e2fs_fbcount; /* free blocks count */ 72 uint32_t e2fs_ficount; /* free inodes count */ 73 uint32_t e2fs_first_dblock; /* first data block */ 74 uint32_t e2fs_log_bsize; /* block size = 1024*(2^e2fs_log_bsize) */ 75 uint32_t e2fs_log_fsize; /* fragment size */ 76 uint32_t e2fs_bpg; /* blocks per group */ 77 uint32_t e2fs_fpg; /* frags per group */ 78 uint32_t e2fs_ipg; /* inodes per group */ 79 uint32_t e2fs_mtime; /* mount time */ 80 uint32_t e2fs_wtime; /* write time */ 81 uint16_t e2fs_mnt_count; /* mount count */ 82 uint16_t e2fs_max_mnt_count; /* max mount count */ 83 uint16_t e2fs_magic; /* magic number */ 84 uint16_t e2fs_state; /* file system state */ 85 uint16_t e2fs_beh; /* behavior on errors */ 86 uint16_t e2fs_minrev; /* minor revision level */ 87 uint32_t e2fs_lastfsck; /* time of last fsck */ 88 uint32_t e2fs_fsckintv; /* max time between fscks */ 89 uint32_t e2fs_creator; /* creator OS */ 90 uint32_t e2fs_rev; /* revision level */ 91 uint16_t e2fs_ruid; /* default uid for reserved blocks */ 92 uint16_t e2fs_rgid; /* default gid for reserved blocks */ |
| 93 /* EXT2_DYNAMIC_REV superblocks */ | 93 /* EXT2_DYNAMIC_REV superblocks */ |
| 94 u_int32_t e2fs_first_ino; /* first non-reserved inode */ 95 u_int16_t e2fs_inode_size; /* size of inode structure */ 96 u_int16_t e2fs_block_group_nr; /* block grp number of this sblk*/ 97 u_int32_t e2fs_features_compat; /* compatible feature set */ 98 u_int32_t e2fs_features_incompat; /* incompatible feature set */ 99 u_int32_t e2fs_features_rocompat; /* RO-compatible feature set */ 100 u_int8_t e2fs_uuid[16]; /* 128-bit uuid for volume */ 101 char e2fs_vname[16]; /* volume name */ 102 char e2fs_fsmnt[64]; /* name mounted on */ 103 u_int32_t e2fs_algo; /* For comcate for dir */ 104 u_int16_t e2fs_reserved_ngdb; /* # of reserved gd blocks for resize */ 105 u_int32_t reserved2[204]; | 94 uint32_t e2fs_first_ino; /* first non-reserved inode */ 95 uint16_t e2fs_inode_size; /* size of inode structure */ 96 uint16_t e2fs_block_group_nr; /* block grp number of this sblk*/ 97 uint32_t e2fs_features_compat; /* compatible feature set */ 98 uint32_t e2fs_features_incompat; /* incompatible feature set */ 99 uint32_t e2fs_features_rocompat; /* RO-compatible feature set */ 100 uint8_t e2fs_uuid[16]; /* 128-bit uuid for volume */ 101 char e2fs_vname[16]; /* volume name */ 102 char e2fs_fsmnt[64]; /* name mounted on */ 103 uint32_t e2fs_algo; /* For compression */ 104 uint8_t e2fs_prealloc; /* # of blocks for old prealloc */ 105 uint8_t e2fs_dir_prealloc; /* # of blocks for old prealloc dirs */ 106 uint16_t e2fs_reserved_ngdb; /* # of reserved gd blocks for resize */ 107 char e3fs_journal_uuid[16]; /* uuid of journal superblock */ 108 uint32_t e3fs_journal_inum; /* inode number of journal file */ 109 uint32_t e3fs_journal_dev; /* device number of journal file */ 110 uint32_t e3fs_last_orphan; /* start of list of inodes to delete */ 111 uint32_t e3fs_hash_seed[4]; /* HTREE hash seed */ 112 char e3fs_def_hash_version; /* Default hash version to use */ 113 char e3fs_reserved_char_pad; 114 uint32_t e3fs_default_mount_opts; 115 uint32_t e3fs_first_meta_bg; /* First metablock block group */ 116 uint32_t reserved2[190]; /* Padding to the end of the block */ |
| 106}; 107 108 109/* 110 * In-Memory Superblock 111 */ 112 113struct m_ext2fs { 114 struct ext2fs * e2fs; | 117}; 118 119 120/* 121 * In-Memory Superblock 122 */ 123 124struct m_ext2fs { 125 struct ext2fs * e2fs; |
| 115 char e2fs_fsmnt[MAXMNTLEN];/* name mounted on */ 116 char e2fs_ronly; /* mounted read-only flag */ 117 char e2fs_fmod; /* super block modified flag */ | 126 char e2fs_fsmnt[MAXMNTLEN];/* name mounted on */ 127 char e2fs_ronly; /* mounted read-only flag */ 128 char e2fs_fmod; /* super block modified flag */ |
| 118 uint32_t e2fs_bsize; /* Block size */ 119 uint32_t e2fs_bshift; /* calc of logical block no */ | 129 uint32_t e2fs_bsize; /* Block size */ 130 uint32_t e2fs_bshift; /* calc of logical block no */ |
| 120 int32_t e2fs_bmask; /* calc of block offset */ 121 int32_t e2fs_bpg; /* Number of blocks per group */ 122 int64_t e2fs_qbmask; /* = s_blocksize -1 */ | 131 int32_t e2fs_bmask; /* calc of block offset */ 132 int32_t e2fs_bpg; /* Number of blocks per group */ 133 int64_t e2fs_qbmask; /* = s_blocksize -1 */ |
| 123 uint32_t e2fs_fsbtodb; /* Shift to get disk block */ 124 uint32_t e2fs_ipg; /* Number of inodes per group */ 125 uint32_t e2fs_ipb; /* Number of inodes per block */ 126 uint32_t e2fs_itpg; /* Number of inode table per group */ 127 uint32_t e2fs_fsize; /* Size of fragments per block */ 128 uint32_t e2fs_fpb; /* Number of fragments per block */ 129 uint32_t e2fs_fpg; /* Number of fragments per group */ 130 uint32_t e2fs_dbpg; /* Number of descriptor blocks per group */ 131 uint32_t e2fs_descpb; /* Number of group descriptors per block */ 132 uint32_t e2fs_gdbcount; /* Number of group descriptors */ 133 uint32_t e2fs_gcount; /* Number of groups */ 134 uint32_t e2fs_first_inode;/* First inode on fs */ 135 int32_t e2fs_isize; /* Size of inode */ 136 uint32_t e2fs_mount_opt; 137 uint32_t e2fs_blocksize_bits; 138 uint32_t e2fs_total_dir; /* Total number of directories */ 139 uint8_t *e2fs_contigdirs; /* (u) # of contig. allocated dirs */ | 134 uint32_t e2fs_fsbtodb; /* Shift to get disk block */ 135 uint32_t e2fs_ipg; /* Number of inodes per group */ 136 uint32_t e2fs_ipb; /* Number of inodes per block */ 137 uint32_t e2fs_itpg; /* Number of inode table per group */ 138 uint32_t e2fs_fsize; /* Size of fragments per block */ 139 uint32_t e2fs_fpb; /* Number of fragments per block */ 140 uint32_t e2fs_fpg; /* Number of fragments per group */ 141 uint32_t e2fs_dbpg; /* Number of descriptor blocks per group */ 142 uint32_t e2fs_descpb; /* Number of group descriptors per block */ 143 uint32_t e2fs_gdbcount; /* Number of group descriptors */ 144 uint32_t e2fs_gcount; /* Number of groups */ 145 uint32_t e2fs_first_inode;/* First inode on fs */ 146 int32_t e2fs_isize; /* Size of inode */ 147 uint32_t e2fs_mount_opt; 148 uint32_t e2fs_blocksize_bits; 149 uint32_t e2fs_total_dir; /* Total number of directories */ 150 uint8_t *e2fs_contigdirs; /* (u) # of contig. allocated dirs */ |
| 140 char e2fs_wasvalid; /* valid at mount time */ 141 off_t e2fs_maxfilesize; 142 struct ext2_gd *e2fs_gd; /* Group Descriptors */ | 151 char e2fs_wasvalid; /* valid at mount time */ 152 off_t e2fs_maxfilesize; 153 struct ext2_gd *e2fs_gd; /* Group Descriptors */ |
| 143}; 144 145/* 146 * The second extended file system version 147 */ 148#define E2FS_DATE "95/08/09" 149#define E2FS_VERSION "0.5b" 150 --- 76 unchanged lines hidden (view full) --- 227 * File clean flags 228 */ 229#define E2FS_ISCLEAN 0x0001 /* Unmounted cleanly */ 230#define E2FS_ERRORS 0x0002 /* Errors detected */ 231 232/* ext2 file system block group descriptor */ 233 234struct ext2_gd { | 154}; 155 156/* 157 * The second extended file system version 158 */ 159#define E2FS_DATE "95/08/09" 160#define E2FS_VERSION "0.5b" 161 --- 76 unchanged lines hidden (view full) --- 238 * File clean flags 239 */ 240#define E2FS_ISCLEAN 0x0001 /* Unmounted cleanly */ 241#define E2FS_ERRORS 0x0002 /* Errors detected */ 242 243/* ext2 file system block group descriptor */ 244 245struct ext2_gd { |
| 235 u_int32_t ext2bgd_b_bitmap; /* blocks bitmap block */ 236 u_int32_t ext2bgd_i_bitmap; /* inodes bitmap block */ 237 u_int32_t ext2bgd_i_tables; /* inodes table block */ 238 u_int16_t ext2bgd_nbfree; /* number of free blocks */ 239 u_int16_t ext2bgd_nifree; /* number of free inodes */ 240 u_int16_t ext2bgd_ndirs; /* number of directories */ 241 u_int16_t reserved; 242 u_int32_t reserved2[3]; | 246 uint32_t ext2bgd_b_bitmap; /* blocks bitmap block */ 247 uint32_t ext2bgd_i_bitmap; /* inodes bitmap block */ 248 uint32_t ext2bgd_i_tables; /* inodes table block */ 249 uint16_t ext2bgd_nbfree; /* number of free blocks */ 250 uint16_t ext2bgd_nifree; /* number of free inodes */ 251 uint16_t ext2bgd_ndirs; /* number of directories */ 252 uint16_t reserved; 253 uint32_t reserved2[3]; |
| 243}; 244 245/* EXT2FS metadatas are stored in little-endian byte order. These macros 246 * helps reading these metadatas 247 */ 248 249#define e2fs_cgload(old, new, size) memcpy((new), (old), (size)); 250#define e2fs_cgsave(old, new, size) memcpy((new), (old), (size)); --- 57 unchanged lines hidden --- | 254}; 255 256/* EXT2FS metadatas are stored in little-endian byte order. These macros 257 * helps reading these metadatas 258 */ 259 260#define e2fs_cgload(old, new, size) memcpy((new), (old), (size)); 261#define e2fs_cgsave(old, new, size) memcpy((new), (old), (size)); --- 57 unchanged lines hidden --- |