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 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef _LINUX_EXT2_FS_H 13 #define _LINUX_EXT2_FS_H 14 15 #include <linux/types.h> 16 17 #undef EXT2FS_DEBUG 18 19 #define EXT2_PREALLOCATE 20 #define EXT2_DEFAULT_PREALLOC_BLOCKS 8 21 22 #define EXT2FS_DATE "95/08/09" 23 #define EXT2FS_VERSION "0.5b" 24 25 #ifdef EXT2FS_DEBUG 26 #define ext2_debug(f, a...) { printk ("EXT2-fs DEBUG (%s, %d): %s:", __FILE__, __LINE__, __FUNCTION__); printk (f, ## a); } 27 #else 28 #define ext2_debug(f, a...) 29 #endif 30 31 #define EXT2_BAD_INO 1 32 #define EXT2_ROOT_INO 2 33 #define EXT2_BOOT_LOADER_INO 5 34 #define EXT2_UNDEL_DIR_INO 6 35 36 #define EXT2_GOOD_OLD_FIRST_INO 11 37 38 #define EXT2_SUPER_MAGIC 0xEF53 39 40 #define EXT2_SB(sb) (sb) 41 42 #define EXT2_LINK_MAX 32000 43 44 #define EXT2_MIN_BLOCK_SIZE 1024 45 #define EXT2_MAX_BLOCK_SIZE 4096 46 #define EXT2_MIN_BLOCK_LOG_SIZE 10 47 #define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size) 48 #define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32)) 49 #define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) 50 #define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? EXT2_GOOD_OLD_INODE_SIZE : (s)->s_inode_size) 51 #define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? EXT2_GOOD_OLD_FIRST_INO : (s)->s_first_ino) 52 53 #define EXT2_MIN_FRAG_SIZE 1024 54 #define EXT2_MAX_FRAG_SIZE 4096 55 #define EXT2_MIN_FRAG_LOG_SIZE 10 56 #define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size) 57 #define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s)) 58 59 struct ext2_group_desc 60 { 61 __le32 bg_block_bitmap; 62 __le32 bg_inode_bitmap; 63 __le32 bg_inode_table; 64 __le16 bg_free_blocks_count; 65 __le16 bg_free_inodes_count; 66 __le16 bg_used_dirs_count; 67 __le16 bg_pad; 68 __le32 bg_reserved[3]; 69 }; 70 71 #define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) 72 #define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc)) 73 #define EXT2_INODES_PER_GROUP(s) ((s)->s_inodes_per_group) 74 75 #define EXT2_NDIR_BLOCKS 12 76 #define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS 77 #define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1) 78 #define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1) 79 #define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1) 80 81 #define EXT2_SECRM_FL 0x00000001 82 #define EXT2_UNRM_FL 0x00000002 83 #define EXT2_COMPR_FL 0x00000004 84 #define EXT2_SYNC_FL 0x00000008 85 #define EXT2_IMMUTABLE_FL 0x00000010 86 #define EXT2_APPEND_FL 0x00000020 87 #define EXT2_NODUMP_FL 0x00000040 88 #define EXT2_NOATIME_FL 0x00000080 89 90 #define EXT2_DIRTY_FL 0x00000100 91 #define EXT2_COMPRBLK_FL 0x00000200 92 #define EXT2_NOCOMP_FL 0x00000400 93 #define EXT2_ECOMPR_FL 0x00000800 94 95 #define EXT2_BTREE_FL 0x00001000 96 #define EXT2_INDEX_FL 0x00001000 97 #define EXT2_IMAGIC_FL 0x00002000 98 #define EXT2_JOURNAL_DATA_FL 0x00004000 99 #define EXT2_NOTAIL_FL 0x00008000 100 #define EXT2_DIRSYNC_FL 0x00010000 101 #define EXT2_TOPDIR_FL 0x00020000 102 #define EXT2_RESERVED_FL 0x80000000 103 104 #define EXT2_FL_USER_VISIBLE 0x0003DFFF 105 #define EXT2_FL_USER_MODIFIABLE 0x000380FF 106 107 #define EXT2_IOC_GETFLAGS _IOR('f', 1, long) 108 #define EXT2_IOC_SETFLAGS _IOW('f', 2, long) 109 #define EXT2_IOC_GETVERSION _IOR('v', 1, long) 110 #define EXT2_IOC_SETVERSION _IOW('v', 2, long) 111 112 struct ext2_inode { 113 __le16 i_mode; 114 __le16 i_uid; 115 __le32 i_size; 116 __le32 i_atime; 117 __le32 i_ctime; 118 __le32 i_mtime; 119 __le32 i_dtime; 120 __le16 i_gid; 121 __le16 i_links_count; 122 __le32 i_blocks; 123 __le32 i_flags; 124 union { 125 struct { 126 __le32 l_i_reserved1; 127 } linux1; 128 struct { 129 __le32 h_i_translator; 130 } hurd1; 131 struct { 132 __le32 m_i_reserved1; 133 } masix1; 134 } osd1; 135 __le32 i_block[EXT2_N_BLOCKS]; 136 __le32 i_generation; 137 __le32 i_file_acl; 138 __le32 i_dir_acl; 139 __le32 i_faddr; 140 union { 141 struct { 142 __u8 l_i_frag; 143 __u8 l_i_fsize; 144 __u16 i_pad1; 145 __le16 l_i_uid_high; 146 __le16 l_i_gid_high; 147 __u32 l_i_reserved2; 148 } linux2; 149 struct { 150 __u8 h_i_frag; 151 __u8 h_i_fsize; 152 __le16 h_i_mode_high; 153 __le16 h_i_uid_high; 154 __le16 h_i_gid_high; 155 __le32 h_i_author; 156 } hurd2; 157 struct { 158 __u8 m_i_frag; 159 __u8 m_i_fsize; 160 __u16 m_pad1; 161 __u32 m_i_reserved2[2]; 162 } masix2; 163 } osd2; 164 }; 165 166 #define i_size_high i_dir_acl 167 168 #ifdef __linux__ 169 #define i_reserved1 osd1.linux1.l_i_reserved1 170 #define i_frag osd2.linux2.l_i_frag 171 #define i_fsize osd2.linux2.l_i_fsize 172 #define i_uid_low i_uid 173 #define i_gid_low i_gid 174 #define i_uid_high osd2.linux2.l_i_uid_high 175 #define i_gid_high osd2.linux2.l_i_gid_high 176 #define i_reserved2 osd2.linux2.l_i_reserved2 177 #endif 178 179 #ifdef __hurd__ 180 #define i_translator osd1.hurd1.h_i_translator 181 #define i_frag osd2.hurd2.h_i_frag; 182 #define i_fsize osd2.hurd2.h_i_fsize; 183 #define i_uid_high osd2.hurd2.h_i_uid_high 184 #define i_gid_high osd2.hurd2.h_i_gid_high 185 #define i_author osd2.hurd2.h_i_author 186 #endif 187 188 #ifdef __masix__ 189 #define i_reserved1 osd1.masix1.m_i_reserved1 190 #define i_frag osd2.masix2.m_i_frag 191 #define i_fsize osd2.masix2.m_i_fsize 192 #define i_reserved2 osd2.masix2.m_i_reserved2 193 #endif 194 195 #define EXT2_VALID_FS 0x0001 196 #define EXT2_ERROR_FS 0x0002 197 198 #define EXT2_MOUNT_CHECK 0x000001 199 #define EXT2_MOUNT_OLDALLOC 0x000002 200 #define EXT2_MOUNT_GRPID 0x000004 201 #define EXT2_MOUNT_DEBUG 0x000008 202 #define EXT2_MOUNT_ERRORS_CONT 0x000010 203 #define EXT2_MOUNT_ERRORS_RO 0x000020 204 #define EXT2_MOUNT_ERRORS_PANIC 0x000040 205 #define EXT2_MOUNT_MINIX_DF 0x000080 206 #define EXT2_MOUNT_NOBH 0x000100 207 #define EXT2_MOUNT_NO_UID32 0x000200 208 #define EXT2_MOUNT_XATTR_USER 0x004000 209 #define EXT2_MOUNT_POSIX_ACL 0x008000 210 #define EXT2_MOUNT_XIP 0x010000 211 #define EXT2_MOUNT_USRQUOTA 0x020000 212 #define EXT2_MOUNT_GRPQUOTA 0x040000 213 214 #define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt 215 #define set_opt(o, opt) o |= EXT2_MOUNT_##opt 216 #define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_##opt) 217 218 #define EXT2_DFL_MAX_MNT_COUNT 20 219 #define EXT2_DFL_CHECKINTERVAL 0 220 221 #define EXT2_ERRORS_CONTINUE 1 222 #define EXT2_ERRORS_RO 2 223 #define EXT2_ERRORS_PANIC 3 224 #define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE 225 226 struct ext2_super_block { 227 __le32 s_inodes_count; 228 __le32 s_blocks_count; 229 __le32 s_r_blocks_count; 230 __le32 s_free_blocks_count; 231 __le32 s_free_inodes_count; 232 __le32 s_first_data_block; 233 __le32 s_log_block_size; 234 __le32 s_log_frag_size; 235 __le32 s_blocks_per_group; 236 __le32 s_frags_per_group; 237 __le32 s_inodes_per_group; 238 __le32 s_mtime; 239 __le32 s_wtime; 240 __le16 s_mnt_count; 241 __le16 s_max_mnt_count; 242 __le16 s_magic; 243 __le16 s_state; 244 __le16 s_errors; 245 __le16 s_minor_rev_level; 246 __le32 s_lastcheck; 247 __le32 s_checkinterval; 248 __le32 s_creator_os; 249 __le32 s_rev_level; 250 __le16 s_def_resuid; 251 __le16 s_def_resgid; 252 253 __le32 s_first_ino; 254 __le16 s_inode_size; 255 __le16 s_block_group_nr; 256 __le32 s_feature_compat; 257 __le32 s_feature_incompat; 258 __le32 s_feature_ro_compat; 259 __u8 s_uuid[16]; 260 char s_volume_name[16]; 261 char s_last_mounted[64]; 262 __le32 s_algorithm_usage_bitmap; 263 264 __u8 s_prealloc_blocks; 265 __u8 s_prealloc_dir_blocks; 266 __u16 s_padding1; 267 268 __u8 s_journal_uuid[16]; 269 __u32 s_journal_inum; 270 __u32 s_journal_dev; 271 __u32 s_last_orphan; 272 __u32 s_hash_seed[4]; 273 __u8 s_def_hash_version; 274 __u8 s_reserved_char_pad; 275 __u16 s_reserved_word_pad; 276 __le32 s_default_mount_opts; 277 __le32 s_first_meta_bg; 278 __u32 s_reserved[190]; 279 }; 280 281 #define EXT2_OS_LINUX 0 282 #define EXT2_OS_HURD 1 283 #define EXT2_OS_MASIX 2 284 #define EXT2_OS_FREEBSD 3 285 #define EXT2_OS_LITES 4 286 287 #define EXT2_GOOD_OLD_REV 0 288 #define EXT2_DYNAMIC_REV 1 289 290 #define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV 291 #define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV 292 293 #define EXT2_GOOD_OLD_INODE_SIZE 128 294 295 #define EXT2_HAS_COMPAT_FEATURE(sb,mask) ( EXT2_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) ) 296 #define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) ( EXT2_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) ) 297 #define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) ( EXT2_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) ) 298 #define EXT2_SET_COMPAT_FEATURE(sb,mask) EXT2_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) 299 #define EXT2_SET_RO_COMPAT_FEATURE(sb,mask) EXT2_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) 300 #define EXT2_SET_INCOMPAT_FEATURE(sb,mask) EXT2_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) 301 #define EXT2_CLEAR_COMPAT_FEATURE(sb,mask) EXT2_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) 302 #define EXT2_CLEAR_RO_COMPAT_FEATURE(sb,mask) EXT2_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) 303 #define EXT2_CLEAR_INCOMPAT_FEATURE(sb,mask) EXT2_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) 304 305 #define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 306 #define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002 307 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 308 #define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008 309 #define EXT2_FEATURE_COMPAT_RESIZE_INO 0x0010 310 #define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020 311 #define EXT2_FEATURE_COMPAT_ANY 0xffffffff 312 313 #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 314 #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 315 #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 316 #define EXT2_FEATURE_RO_COMPAT_ANY 0xffffffff 317 318 #define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 319 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 320 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 321 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 322 #define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 323 #define EXT2_FEATURE_INCOMPAT_ANY 0xffffffff 324 325 #define EXT2_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR 326 #define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| EXT2_FEATURE_INCOMPAT_META_BG) 327 #define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| EXT2_FEATURE_RO_COMPAT_LARGE_FILE| EXT2_FEATURE_RO_COMPAT_BTREE_DIR) 328 #define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP 329 #define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP 330 331 #define EXT2_DEF_RESUID 0 332 #define EXT2_DEF_RESGID 0 333 334 #define EXT2_DEFM_DEBUG 0x0001 335 #define EXT2_DEFM_BSDGROUPS 0x0002 336 #define EXT2_DEFM_XATTR_USER 0x0004 337 #define EXT2_DEFM_ACL 0x0008 338 #define EXT2_DEFM_UID16 0x0010 339 340 #define EXT3_DEFM_JMODE 0x0060 341 #define EXT3_DEFM_JMODE_DATA 0x0020 342 #define EXT3_DEFM_JMODE_ORDERED 0x0040 343 #define EXT3_DEFM_JMODE_WBACK 0x0060 344 345 #define EXT2_NAME_LEN 255 346 347 struct ext2_dir_entry { 348 __le32 inode; 349 __le16 rec_len; 350 __le16 name_len; 351 char name[EXT2_NAME_LEN]; 352 }; 353 354 struct ext2_dir_entry_2 { 355 __le32 inode; 356 __le16 rec_len; 357 __u8 name_len; 358 __u8 file_type; 359 char name[EXT2_NAME_LEN]; 360 }; 361 362 enum { 363 EXT2_FT_UNKNOWN, 364 EXT2_FT_REG_FILE, 365 EXT2_FT_DIR, 366 EXT2_FT_CHRDEV, 367 EXT2_FT_BLKDEV, 368 EXT2_FT_FIFO, 369 EXT2_FT_SOCK, 370 EXT2_FT_SYMLINK, 371 EXT2_FT_MAX 372 }; 373 374 #define EXT2_DIR_PAD 4 375 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1) 376 #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & ~EXT2_DIR_ROUND) 377 378 #endif 379