diff options
Diffstat (limited to 'util-linux/ext2_fs.h')
| -rw-r--r-- | util-linux/ext2_fs.h | 644 |
1 files changed, 0 insertions, 644 deletions
diff --git a/util-linux/ext2_fs.h b/util-linux/ext2_fs.h deleted file mode 100644 index ff615c4..0000000 --- a/util-linux/ext2_fs.h +++ /dev/null @@ -1,644 +0,0 @@ -/* - * linux/include/linux/ext2_fs.h - * - * Copyright (C) 1992, 1993, 1994, 1995 - * Remy Card (card@masi.ibp.fr) - * Laboratoire MASI - Institut Blaise Pascal - * Universite Pierre et Marie Curie (Paris VI) - * - * from - * - * linux/include/linux/minix_fs.h - * - * Copyright (C) 1991, 1992 Linus Torvalds - */ - -#ifndef _LINUX_EXT2_FS_H -#define _LINUX_EXT2_FS_H - -#include <ext2fs/ext2_types.h> /* Changed from linux/types.h */ - -/* - * The second extended filesystem constants/structures - */ - -/* - * Define EXT2FS_DEBUG to produce debug messages - */ -#undef EXT2FS_DEBUG - -/* - * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files - */ -#define EXT2_PREALLOCATE -#define EXT2_DEFAULT_PREALLOC_BLOCKS 8 - -/* - * The second extended file system version - */ -#define EXT2FS_DATE "95/08/09" -#define EXT2FS_VERSION "0.5b" - -/* - * Special inode numbers - */ -#define EXT2_BAD_INO 1 /* Bad blocks inode */ -#define EXT2_ROOT_INO 2 /* Root inode */ -#define EXT2_ACL_IDX_INO 3 /* ACL inode */ -#define EXT2_ACL_DATA_INO 4 /* ACL inode */ -#define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */ -#define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */ -#define EXT2_RESIZE_INO 7 /* Reserved group descriptors inode */ -#define EXT2_JOURNAL_INO 8 /* Journal inode */ - -/* First non-reserved inode for old ext2 filesystems */ -#define EXT2_GOOD_OLD_FIRST_INO 11 - -/* - * The second extended file system magic number - */ -#define EXT2_SUPER_MAGIC 0xEF53 - -#ifdef __KERNEL__ -#define EXT2_SB(sb) (&((sb)->u.ext2_sb)) -#else -/* Assume that user mode programs are passing in an ext2fs superblock, not - * a kernel struct super_block. This will allow us to call the feature-test - * macros from user land. */ -#define EXT2_SB(sb) (sb) -#endif - -/* - * Maximal count of links to a file - */ -#define EXT2_LINK_MAX 32000 - -/* - * Macro-instructions used to manage several block sizes - */ -#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */ -#define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */ -#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE) -#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE) -#ifdef __KERNEL__ -#define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize) -#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) -#define EXT2_ADDR_PER_BLOCK_BITS(s) (EXT2_SB(s)->addr_per_block_bits) -#define EXT2_INODE_SIZE(s) (EXT2_SB(s)->s_inode_size) -#define EXT2_FIRST_INO(s) (EXT2_SB(s)->s_first_ino) -#else -#define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size) -#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) -#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ - EXT2_GOOD_OLD_INODE_SIZE : (s)->s_inode_size) -#define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ - EXT2_GOOD_OLD_FIRST_INO : (s)->s_first_ino) -#endif -#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof(__u32)) - -/* - * Macro-instructions used to manage fragments - */ -#define EXT2_MIN_FRAG_SIZE EXT2_MIN_BLOCK_SIZE -#define EXT2_MAX_FRAG_SIZE EXT2_MAX_BLOCK_SIZE -#define EXT2_MIN_FRAG_LOG_SIZE EXT2_MIN_BLOCK_LOG_SIZE -#ifdef __KERNEL__ -# define EXT2_FRAG_SIZE(s) (EXT2_SB(s)->s_frag_size) -# define EXT2_FRAGS_PER_BLOCK(s) (EXT2_SB(s)->s_frags_per_block) -#else -# define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size) -# define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s)) -#endif - -/* - * ACL structures - */ -struct ext2_acl_header /* Header of Access Control Lists */ -{ - __u32 aclh_size; - __u32 aclh_file_count; - __u32 aclh_acle_count; - __u32 aclh_first_acle; -}; - -struct ext2_acl_entry /* Access Control List Entry */ -{ - __u32 acle_size; - __u16 acle_perms; /* Access permissions */ - __u16 acle_type; /* Type of entry */ - __u16 acle_tag; /* User or group identity */ - __u16 acle_pad1; - __u32 acle_next; /* Pointer on next entry for the */ - /* same inode or on next free entry */ -}; - -/* - * Structure of a blocks group descriptor - */ -struct ext2_group_desc -{ - __u32 bg_block_bitmap; /* Blocks bitmap block */ - __u32 bg_inode_bitmap; /* Inodes bitmap block */ - __u32 bg_inode_table; /* Inodes table block */ - __u16 bg_free_blocks_count; /* Free blocks count */ - __u16 bg_free_inodes_count; /* Free inodes count */ - __u16 bg_used_dirs_count; /* Directories count */ - __u16 bg_pad; - __u32 bg_reserved[3]; -}; - -/* - * Data structures used by the directory indexing feature - * - * Note: all of the multibyte integer fields are little endian. - */ - -/* - * Note: dx_root_info is laid out so that if it should somehow get - * overlaid by a dirent the two low bits of the hash version will be - * zero. Therefore, the hash version mod 4 should never be 0. - * Sincerely, the paranoia department. - */ -struct ext2_dx_root_info { - __u32 reserved_zero; - __u8 hash_version; /* 0 now, 1 at release */ - __u8 info_length; /* 8 */ - __u8 indirect_levels; - __u8 unused_flags; -}; - -#define EXT2_HASH_LEGACY 0 -#define EXT2_HASH_HALF_MD4 1 -#define EXT2_HASH_TEA 2 - -#define EXT2_HASH_FLAG_INCOMPAT 0x1 - -struct ext2_dx_entry { - __u32 hash; - __u32 block; -}; - -struct ext2_dx_countlimit { - __u16 limit; - __u16 count; -}; - - -/* - * Macro-instructions used to manage group descriptors - */ -#define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group) -#define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group) -#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s)) -/* limits imposed by 16-bit value gd_free_{blocks,inode}_count */ -#define EXT2_MAX_BLOCKS_PER_GROUP(s) ((1 << 16) - 8) -#define EXT2_MAX_INODES_PER_GROUP(s) ((1 << 16) - EXT2_INODES_PER_BLOCK(s)) -#ifdef __KERNEL__ -#define EXT2_DESC_PER_BLOCK(s) (EXT2_SB(s)->s_desc_per_block) -#define EXT2_DESC_PER_BLOCK_BITS(s) (EXT2_SB(s)->s_desc_per_block_bits) -#else -#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc)) -#endif - -/* - * Constants relative to the data blocks - */ -#define EXT2_NDIR_BLOCKS 12 -#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS -#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1) -#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1) -#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1) - -/* - * Inode flags - */ -#define EXT2_SECRM_FL 0x00000001 /* Secure deletion */ -#define EXT2_UNRM_FL 0x00000002 /* Undelete */ -#define EXT2_COMPR_FL 0x00000004 /* Compress file */ -#define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */ -#define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */ -#define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */ -#define EXT2_NODUMP_FL 0x00000040 /* do not dump file */ -#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */ -/* Reserved for compression usage... */ -#define EXT2_DIRTY_FL 0x00000100 -#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ -#define EXT2_NOCOMPR_FL 0x00000400 /* Access raw compressed data */ -#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */ -/* End compression flags --- maybe not all used */ -#define EXT2_BTREE_FL 0x00001000 /* btree format dir */ -#define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */ -#define EXT2_IMAGIC_FL 0x00002000 -#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */ -#define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */ -#define EXT2_DIRSYNC_FL 0x00010000 /* Synchronous directory modifications */ -#define EXT2_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ -#define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */ -#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ - -#define EXT2_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ -#define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */ - -/* - * ioctl commands - */ -#define EXT2_IOC_GETFLAGS _IOR('f', 1, long) -#define EXT2_IOC_SETFLAGS _IOW('f', 2, long) -#define EXT2_IOC_GETVERSION _IOR('v', 1, long) -#define EXT2_IOC_SETVERSION _IOW('v', 2, long) - -/* - * Structure of an inode on the disk - */ -struct ext2_inode { - __u16 i_mode; /* File mode */ - __u16 i_uid; /* Low 16 bits of Owner Uid */ - __u32 i_size; /* Size in bytes */ - __u32 i_atime; /* Access time */ - __u32 i_ctime; /* Creation time */ - __u32 i_mtime; /* Modification time */ - __u32 i_dtime; /* Deletion Time */ - __u16 i_gid; /* Low 16 bits of Group Id */ - __u16 i_links_count; /* Links count */ - __u32 i_blocks; /* Blocks count */ - __u32 i_flags; /* File flags */ - union { - struct { - __u32 l_i_reserved1; - } linux1; - struct { - __u32 h_i_translator; - } hurd1; - struct { - __u32 m_i_reserved1; - } masix1; - } osd1; /* OS dependent 1 */ - __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */ - __u32 i_generation; /* File version (for NFS) */ - __u32 i_file_acl; /* File ACL */ - __u32 i_dir_acl; /* Directory ACL */ - __u32 i_faddr; /* Fragment address */ - union { - struct { - __u8 l_i_frag; /* Fragment number */ - __u8 l_i_fsize; /* Fragment size */ - __u16 i_pad1; - __u16 l_i_uid_high; /* these 2 fields */ - __u16 l_i_gid_high; /* were reserved2[0] */ - __u32 l_i_reserved2; - } linux2; - struct { - __u8 h_i_frag; /* Fragment number */ - __u8 h_i_fsize; /* Fragment size */ - __u16 h_i_mode_high; - __u16 h_i_uid_high; - __u16 h_i_gid_high; - __u32 h_i_author; - } hurd2; - struct { - __u8 m_i_frag; /* Fragment number */ - __u8 m_i_fsize; /* Fragment size */ - __u16 m_pad1; - __u32 m_i_reserved2[2]; - } masix2; - } osd2; /* OS dependent 2 */ -}; - -/* - * Permanent part of an large inode on the disk - */ -struct ext2_inode_large { - __u16 i_mode; /* File mode */ - __u16 i_uid; /* Low 16 bits of Owner Uid */ - __u32 i_size; /* Size in bytes */ - __u32 i_atime; /* Access time */ - __u32 i_ctime; /* Creation time */ - __u32 i_mtime; /* Modification time */ - __u32 i_dtime; /* Deletion Time */ - __u16 i_gid; /* Low 16 bits of Group Id */ - __u16 i_links_count; /* Links count */ - __u32 i_blocks; /* Blocks count */ - __u32 i_flags; /* File flags */ - union { - struct { - __u32 l_i_reserved1; - } linux1; - struct { - __u32 h_i_translator; - } hurd1; - struct { - __u32 m_i_reserved1; - } masix1; - } osd1; /* OS dependent 1 */ - __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */ - __u32 i_generation; /* File version (for NFS) */ - __u32 i_file_acl; /* File ACL */ - __u32 i_dir_acl; /* Directory ACL */ - __u32 i_faddr; /* Fragment address */ - union { - struct { - __u8 l_i_frag; /* Fragment number */ - __u8 l_i_fsize; /* Fragment size */ - __u16 i_pad1; - __u16 l_i_uid_high; /* these 2 fields */ - __u16 l_i_gid_high; /* were reserved2[0] */ - __u32 l_i_reserved2; - } linux2; - struct { - __u8 h_i_frag; /* Fragment number */ - __u8 h_i_fsize; /* Fragment size */ - __u16 h_i_mode_high; - __u16 h_i_uid_high; - __u16 h_i_gid_high; - __u32 h_i_author; - } hurd2; - struct { - __u8 m_i_frag; /* Fragment number */ - __u8 m_i_fsize; /* Fragment size */ - __u16 m_pad1; - __u32 m_i_reserved2[2]; - } masix2; - } osd2; /* OS dependent 2 */ - __u16 i_extra_isize; - __u16 i_pad1; -}; - -#define i_size_high i_dir_acl - -#if defined(__KERNEL__) || defined(__linux__) -#define i_reserved1 osd1.linux1.l_i_reserved1 -#define i_frag osd2.linux2.l_i_frag -#define i_fsize osd2.linux2.l_i_fsize -#define i_uid_low i_uid -#define i_gid_low i_gid -#define i_uid_high osd2.linux2.l_i_uid_high -#define i_gid_high osd2.linux2.l_i_gid_high -#define i_reserved2 osd2.linux2.l_i_reserved2 - -#else -#if defined(__GNU__) - -#define i_translator osd1.hurd1.h_i_translator -#define i_frag osd2.hurd2.h_i_frag; -#define i_fsize osd2.hurd2.h_i_fsize; -#define i_uid_high osd2.hurd2.h_i_uid_high -#define i_gid_high osd2.hurd2.h_i_gid_high -#define i_author osd2.hurd2.h_i_author - -#else -#if defined(__masix__) - -#define i_reserved1 osd1.masix1.m_i_reserved1 -#define i_frag osd2.masix2.m_i_frag -#define i_fsize osd2.masix2.m_i_fsize -#define i_reserved2 osd2.masix2.m_i_reserved2 - -#endif /* __masix__ */ -#endif /* __GNU__ */ -#endif /* defined(__KERNEL__) || defined(__linux__) */ - -/* - * File system states - */ -#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */ -#define EXT2_ERROR_FS 0x0002 /* Errors detected */ - -/* - * Mount flags - */ -#define EXT2_MOUNT_CHECK 0x0001 /* Do mount-time checks */ -#define EXT2_MOUNT_GRPID 0x0004 /* Create files with directory's group */ -#define EXT2_MOUNT_DEBUG 0x0008 /* Some debugging messages */ -#define EXT2_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */ -#define EXT2_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */ -#define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */ -#define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */ -#define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */ - -#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt -#define set_opt(o, opt) o |= EXT2_MOUNT_##opt -#define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & \ - EXT2_MOUNT_##opt) -/* - * Maximal mount counts between two filesystem checks - */ -#define EXT2_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */ -#define EXT2_DFL_CHECKINTERVAL 0 /* Don't use interval check */ - -/* - * Behaviour when detecting errors - */ -#define EXT2_ERRORS_CONTINUE 1 /* Continue execution */ -#define EXT2_ERRORS_RO 2 /* Remount fs read-only */ -#define EXT2_ERRORS_PANIC 3 /* Panic */ -#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE - -/* - * Structure of the super block - */ -struct ext2_super_block { - __u32 s_inodes_count; /* Inodes count */ - __u32 s_blocks_count; /* Blocks count */ - __u32 s_r_blocks_count; /* Reserved blocks count */ - __u32 s_free_blocks_count; /* Free blocks count */ - __u32 s_free_inodes_count; /* Free inodes count */ - __u32 s_first_data_block; /* First Data Block */ - __u32 s_log_block_size; /* Block size */ - __s32 s_log_frag_size; /* Fragment size */ - __u32 s_blocks_per_group; /* # Blocks per group */ - __u32 s_frags_per_group; /* # Fragments per group */ - __u32 s_inodes_per_group; /* # Inodes per group */ - __u32 s_mtime; /* Mount time */ - __u32 s_wtime; /* Write time */ - __u16 s_mnt_count; /* Mount count */ - __s16 s_max_mnt_count; /* Maximal mount count */ - __u16 s_magic; /* Magic signature */ - __u16 s_state; /* File system state */ - __u16 s_errors; /* Behaviour when detecting errors */ - __u16 s_minor_rev_level; /* minor revision level */ - __u32 s_lastcheck; /* time of last check */ - __u32 s_checkinterval; /* max. time between checks */ - __u32 s_creator_os; /* OS */ - __u32 s_rev_level; /* Revision level */ - __u16 s_def_resuid; /* Default uid for reserved blocks */ - __u16 s_def_resgid; /* Default gid for reserved blocks */ - /* - * These fields are for EXT2_DYNAMIC_REV superblocks only. - * - * Note: the difference between the compatible feature set and - * the incompatible feature set is that if there is a bit set - * in the incompatible feature set that the kernel doesn't - * know about, it should refuse to mount the filesystem. - * - * e2fsck's requirements are more strict; if it doesn't know - * about a feature in either the compatible or incompatible - * feature set, it must abort and not try to meddle with - * things it doesn't understand... - */ - __u32 s_first_ino; /* First non-reserved inode */ - __u16 s_inode_size; /* size of inode structure */ - __u16 s_block_group_nr; /* block group # of this superblock */ - __u32 s_feature_compat; /* compatible feature set */ - __u32 s_feature_incompat; /* incompatible feature set */ - __u32 s_feature_ro_compat; /* readonly-compatible feature set */ - __u8 s_uuid[16]; /* 128-bit uuid for volume */ - char s_volume_name[16]; /* volume name */ - char s_last_mounted[64]; /* directory where last mounted */ - __u32 s_algorithm_usage_bitmap; /* For compression */ - /* - * Performance hints. Directory preallocation should only - * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on. - */ - __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ - __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ - __u16 s_reserved_gdt_blocks; /* Per group table for online growth */ - /* - * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set. - */ - __u8 s_journal_uuid[16]; /* uuid of journal superblock */ - __u32 s_journal_inum; /* inode number of journal file */ - __u32 s_journal_dev; /* device number of journal file */ - __u32 s_last_orphan; /* start of list of inodes to delete */ - __u32 s_hash_seed[4]; /* HTREE hash seed */ - __u8 s_def_hash_version; /* Default hash version to use */ - __u8 s_jnl_backup_type; /* Default type of journal backup */ - __u16 s_reserved_word_pad; - __u32 s_default_mount_opts; - __u32 s_first_meta_bg; /* First metablock group */ - __u32 s_mkfs_time; /* When the filesystem was created */ - __u32 s_jnl_blocks[17]; /* Backup of the journal inode */ - __u32 s_reserved[172]; /* Padding to the end of the block */ -}; - -/* - * Codes for operating systems - */ -#define EXT2_OS_LINUX 0 -#define EXT2_OS_HURD 1 -#define EXT2_OS_MASIX 2 -#define EXT2_OS_FREEBSD 3 -#define EXT2_OS_LITES 4 - -/* - * Revision levels - */ -#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */ -#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ - -#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV -#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV - -#define EXT2_GOOD_OLD_INODE_SIZE 128 - -/* - * Journal inode backup types - */ -#define EXT3_JNL_BACKUP_BLOCKS 1 - -/* - * Feature set definitions - */ - -#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \ - ( EXT2_SB(sb)->s_feature_compat & (mask) ) -#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \ - ( EXT2_SB(sb)->s_feature_ro_compat & (mask) ) -#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \ - ( EXT2_SB(sb)->s_feature_incompat & (mask) ) - -#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 -#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002 -#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 -#define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008 -#define EXT2_FEATURE_COMPAT_RESIZE_INODE 0x0010 -#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020 - -#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 -#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 -/* #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 not used */ - -#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 -#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 -#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ -#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ -#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 -#define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040 - - -#define EXT2_FEATURE_COMPAT_SUPP 0 -#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE) -#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ - EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ - EXT2_FEATURE_RO_COMPAT_BTREE_DIR) - -/* - * Default values for user and/or group using reserved blocks - */ -#define EXT2_DEF_RESUID 0 -#define EXT2_DEF_RESGID 0 - -/* - * Default mount options - */ -#define EXT2_DEFM_DEBUG 0x0001 -#define EXT2_DEFM_BSDGROUPS 0x0002 -#define EXT2_DEFM_XATTR_USER 0x0004 -#define EXT2_DEFM_ACL 0x0008 -#define EXT2_DEFM_UID16 0x0010 -#define EXT3_DEFM_JMODE 0x0060 -#define EXT3_DEFM_JMODE_DATA 0x0020 -#define EXT3_DEFM_JMODE_ORDERED 0x0040 -#define EXT3_DEFM_JMODE_WBACK 0x0060 - -/* - * Structure of a directory entry - */ -#define EXT2_NAME_LEN 255 - -struct ext2_dir_entry { - __u32 inode; /* Inode number */ - __u16 rec_len; /* Directory entry length */ - __u16 name_len; /* Name length */ - char name[EXT2_NAME_LEN]; /* File name */ -}; - -/* - * The new version of the directory entry. Since EXT2 structures are - * stored in intel byte order, and the name_len field could never be - * bigger than 255 chars, it's safe to reclaim the extra byte for the - * file_type field. - */ -struct ext2_dir_entry_2 { - __u32 inode; /* Inode number */ - __u16 rec_len; /* Directory entry length */ - __u8 name_len; /* Name length */ - __u8 file_type; - char name[EXT2_NAME_LEN]; /* File name */ -}; - -/* - * Ext2 directory file types. Only the low 3 bits are used. The - * other bits are reserved for now. - */ -#define EXT2_FT_UNKNOWN 0 -#define EXT2_FT_REG_FILE 1 -#define EXT2_FT_DIR 2 -#define EXT2_FT_CHRDEV 3 -#define EXT2_FT_BLKDEV 4 -#define EXT2_FT_FIFO 5 -#define EXT2_FT_SOCK 6 -#define EXT2_FT_SYMLINK 7 - -#define EXT2_FT_MAX 8 - -/* - * EXT2_DIR_PAD defines the directory entries boundaries - * - * NOTE: It must be a multiple of 4 - */ -#define EXT2_DIR_PAD 4 -#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1) -#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \ - ~EXT2_DIR_ROUND) - -#endif /* _LINUX_EXT2_FS_H */ |