#include <linux/types.h>
#include <linux/magic.h>
-#include <linux/fs.h>
-#include <linux/ext2_fs_sb.h>
-
-/*
- * The second extended filesystem constants/structures
- */
-
-/*
- * Define EXT2FS_DEBUG to produce debug messages
- */
-#undef EXT2FS_DEBUG
-
-/*
- * Define EXT2_RESERVATION to reserve data blocks for expanding files
- */
-#define EXT2_DEFAULT_RESERVE_BLOCKS 8
-/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */
-#define EXT2_MAX_RESERVE_BLOCKS 1027
-#define EXT2_RESERVE_WINDOW_NOT_ALLOCATED 0
-/*
- * The second extended file system version
- */
-#define EXT2FS_DATE "95/08/09"
-#define EXT2FS_VERSION "0.5b"
-
-/*
- * Debug code
- */
-#ifdef EXT2FS_DEBUG
-# define ext2_debug(f, a...) { \
- printk ("EXT2-fs DEBUG (%s, %d): %s:", \
- __FILE__, __LINE__, __func__); \
- printk (f, ## a); \
- }
-#else
-# define ext2_debug(f, a...) /**/
-#endif
-
-/*
- * Special inode numbers
- */
-#define EXT2_BAD_INO 1 /* Bad blocks inode */
-#define EXT2_ROOT_INO 2 /* Root inode */
-#define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
-#define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
-
-/* First non-reserved inode for old ext2 filesystems */
-#define EXT2_GOOD_OLD_FIRST_INO 11
-
-static inline struct ext2_sb_info *EXT2_SB(struct super_block *sb)
-{
- return sb->s_fs_info;
-}
+#define EXT2_NAME_LEN 255
/*
* Maximal count of links to a file
*/
#define EXT2_LINK_MAX 32000
-/*
- * Macro-instructions used to manage several block sizes
- */
-#define EXT2_MIN_BLOCK_SIZE 1024
-#define EXT2_MAX_BLOCK_SIZE 4096
-#define EXT2_MIN_BLOCK_LOG_SIZE 10
-#define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize)
-#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
-#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
-#define EXT2_ADDR_PER_BLOCK_BITS(s) (EXT2_SB(s)->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)
-
-/*
- * Macro-instructions used to manage fragments
- */
-#define EXT2_MIN_FRAG_SIZE 1024
-#define EXT2_MAX_FRAG_SIZE 4096
-#define EXT2_MIN_FRAG_LOG_SIZE 10
-#define EXT2_FRAG_SIZE(s) (EXT2_SB(s)->s_frag_size)
-#define EXT2_FRAGS_PER_BLOCK(s) (EXT2_SB(s)->s_frags_per_block)
-
-/*
- * Structure of a blocks group descriptor
- */
-struct ext2_group_desc
-{
- __le32 bg_block_bitmap; /* Blocks bitmap block */
- __le32 bg_inode_bitmap; /* Inodes bitmap block */
- __le32 bg_inode_table; /* Inodes table block */
- __le16 bg_free_blocks_count; /* Free blocks count */
- __le16 bg_free_inodes_count; /* Free inodes count */
- __le16 bg_used_dirs_count; /* Directories count */
- __le16 bg_pad;
- __le32 bg_reserved[3];
-};
-
-/*
- * Macro-instructions used to manage group descriptors
- */
-#define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group)
-#define EXT2_DESC_PER_BLOCK(s) (EXT2_SB(s)->s_desc_per_block)
-#define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group)
-#define EXT2_DESC_PER_BLOCK_BITS(s) (EXT2_SB(s)->s_desc_per_block_bits)
-
-/*
- * 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 (GETFLAGS/SETFLAGS)
- */
-#define EXT2_SECRM_FL FS_SECRM_FL /* Secure deletion */
-#define EXT2_UNRM_FL FS_UNRM_FL /* Undelete */
-#define EXT2_COMPR_FL FS_COMPR_FL /* Compress file */
-#define EXT2_SYNC_FL FS_SYNC_FL /* Synchronous updates */
-#define EXT2_IMMUTABLE_FL FS_IMMUTABLE_FL /* Immutable file */
-#define EXT2_APPEND_FL FS_APPEND_FL /* writes to file may only append */
-#define EXT2_NODUMP_FL FS_NODUMP_FL /* do not dump file */
-#define EXT2_NOATIME_FL FS_NOATIME_FL /* do not update atime */
-/* Reserved for compression usage... */
-#define EXT2_DIRTY_FL FS_DIRTY_FL
-#define EXT2_COMPRBLK_FL FS_COMPRBLK_FL /* One or more compressed clusters */
-#define EXT2_NOCOMP_FL FS_NOCOMP_FL /* Don't compress */
-#define EXT2_ECOMPR_FL FS_ECOMPR_FL /* Compression error */
-/* End compression flags --- maybe not all used */
-#define EXT2_BTREE_FL FS_BTREE_FL /* btree format dir */
-#define EXT2_INDEX_FL FS_INDEX_FL /* hash-indexed directory */
-#define EXT2_IMAGIC_FL FS_IMAGIC_FL /* AFS directory */
-#define EXT2_JOURNAL_DATA_FL FS_JOURNAL_DATA_FL /* Reserved for ext3 */
-#define EXT2_NOTAIL_FL FS_NOTAIL_FL /* file tail should not be merged */
-#define EXT2_DIRSYNC_FL FS_DIRSYNC_FL /* dirsync behaviour (directories only) */
-#define EXT2_TOPDIR_FL FS_TOPDIR_FL /* Top of directory hierarchies*/
-#define EXT2_RESERVED_FL FS_RESERVED_FL /* reserved for ext2 lib */
-
-#define EXT2_FL_USER_VISIBLE FS_FL_USER_VISIBLE /* User visible flags */
-#define EXT2_FL_USER_MODIFIABLE FS_FL_USER_MODIFIABLE /* User modifiable flags */
+#define EXT2_SB_MAGIC_OFFSET 0x38
+#define EXT2_SB_BLOCKS_OFFSET 0x04
+#define EXT2_SB_BSIZE_OFFSET 0x18
-/* Flags that should be inherited by new inodes from their parent. */
-#define EXT2_FL_INHERITED (EXT2_SECRM_FL | EXT2_UNRM_FL | EXT2_COMPR_FL |\
- EXT2_SYNC_FL | EXT2_NODUMP_FL |\
- EXT2_NOATIME_FL | EXT2_COMPRBLK_FL |\
- EXT2_NOCOMP_FL | EXT2_JOURNAL_DATA_FL |\
- EXT2_NOTAIL_FL | EXT2_DIRSYNC_FL)
-
-/* Flags that are appropriate for regular files (all but dir-specific ones). */
-#define EXT2_REG_FLMASK (~(EXT2_DIRSYNC_FL | EXT2_TOPDIR_FL))
-
-/* Flags that are appropriate for non-directories/regular files. */
-#define EXT2_OTHER_FLMASK (EXT2_NODUMP_FL | EXT2_NOATIME_FL)
-
-/* Mask out flags that are inappropriate for the given type of inode. */
-static inline __u32 ext2_mask_flags(umode_t mode, __u32 flags)
+static inline u64 ext2_image_size(void *ext2_sb)
{
- if (S_ISDIR(mode))
- return flags;
- else if (S_ISREG(mode))
- return flags & EXT2_REG_FLMASK;
- else
- return flags & EXT2_OTHER_FLMASK;
+ __u8 *p = ext2_sb;
+ if (*(__le16 *)(p + EXT2_SB_MAGIC_OFFSET) != cpu_to_le16(EXT2_SUPER_MAGIC))
+ return 0;
+ return (u64)le32_to_cpup((__le32 *)(p + EXT2_SB_BLOCKS_OFFSET)) <<
+ le32_to_cpup((__le32 *)(p + EXT2_SB_BSIZE_OFFSET));
}
-/*
- * ioctl commands
- */
-#define EXT2_IOC_GETFLAGS FS_IOC_GETFLAGS
-#define EXT2_IOC_SETFLAGS FS_IOC_SETFLAGS
-#define EXT2_IOC_GETVERSION FS_IOC_GETVERSION
-#define EXT2_IOC_SETVERSION FS_IOC_SETVERSION
-#define EXT2_IOC_GETRSVSZ _IOR('f', 5, long)
-#define EXT2_IOC_SETRSVSZ _IOW('f', 6, long)
-
-/*
- * ioctl commands in 32 bit emulation
- */
-#define EXT2_IOC32_GETFLAGS FS_IOC32_GETFLAGS
-#define EXT2_IOC32_SETFLAGS FS_IOC32_SETFLAGS
-#define EXT2_IOC32_GETVERSION FS_IOC32_GETVERSION
-#define EXT2_IOC32_SETVERSION FS_IOC32_SETVERSION
-
-/*
- * Structure of an inode on the disk
- */
-struct ext2_inode {
- __le16 i_mode; /* File mode */
- __le16 i_uid; /* Low 16 bits of Owner Uid */
- __le32 i_size; /* Size in bytes */
- __le32 i_atime; /* Access time */
- __le32 i_ctime; /* Creation time */
- __le32 i_mtime; /* Modification time */
- __le32 i_dtime; /* Deletion Time */
- __le16 i_gid; /* Low 16 bits of Group Id */
- __le16 i_links_count; /* Links count */
- __le32 i_blocks; /* Blocks count */
- __le32 i_flags; /* File flags */
- union {
- struct {
- __le32 l_i_reserved1;
- } linux1;
- struct {
- __le32 h_i_translator;
- } hurd1;
- struct {
- __le32 m_i_reserved1;
- } masix1;
- } osd1; /* OS dependent 1 */
- __le32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
- __le32 i_generation; /* File version (for NFS) */
- __le32 i_file_acl; /* File ACL */
- __le32 i_dir_acl; /* Directory ACL */
- __le32 i_faddr; /* Fragment address */
- union {
- struct {
- __u8 l_i_frag; /* Fragment number */
- __u8 l_i_fsize; /* Fragment size */
- __u16 i_pad1;
- __le16 l_i_uid_high; /* these 2 fields */
- __le16 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 */
- __le16 h_i_mode_high;
- __le16 h_i_uid_high;
- __le16 h_i_gid_high;
- __le32 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 */
-};
-
-#define i_size_high i_dir_acl
-
-#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
-
-/*
- * File system states
- */
-#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
-#define EXT2_ERROR_FS 0x0002 /* Errors detected */
-
-/*
- * Mount flags
- */
-#define EXT2_MOUNT_CHECK 0x000001 /* Do mount-time checks */
-#define EXT2_MOUNT_OLDALLOC 0x000002 /* Don't use the new Orlov allocator */
-#define EXT2_MOUNT_GRPID 0x000004 /* Create files with directory's group */
-#define EXT2_MOUNT_DEBUG 0x000008 /* Some debugging messages */
-#define EXT2_MOUNT_ERRORS_CONT 0x000010 /* Continue on errors */
-#define EXT2_MOUNT_ERRORS_RO 0x000020 /* Remount fs ro on errors */
-#define EXT2_MOUNT_ERRORS_PANIC 0x000040 /* Panic on errors */
-#define EXT2_MOUNT_MINIX_DF 0x000080 /* Mimics the Minix statfs */
-#define EXT2_MOUNT_NOBH 0x000100 /* No buffer_heads */
-#define EXT2_MOUNT_NO_UID32 0x000200 /* Disable 32-bit UIDs */
-#define EXT2_MOUNT_XATTR_USER 0x004000 /* Extended user attributes */
-#define EXT2_MOUNT_POSIX_ACL 0x008000 /* POSIX Access Control Lists */
-#define EXT2_MOUNT_XIP 0x010000 /* Execute in place */
-#define EXT2_MOUNT_USRQUOTA 0x020000 /* user quota */
-#define EXT2_MOUNT_GRPQUOTA 0x040000 /* group quota */
-#define EXT2_MOUNT_RESERVATION 0x080000 /* Preallocation */
-
-
-#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 {
- __le32 s_inodes_count; /* Inodes count */
- __le32 s_blocks_count; /* Blocks count */
- __le32 s_r_blocks_count; /* Reserved blocks count */
- __le32 s_free_blocks_count; /* Free blocks count */
- __le32 s_free_inodes_count; /* Free inodes count */
- __le32 s_first_data_block; /* First Data Block */
- __le32 s_log_block_size; /* Block size */
- __le32 s_log_frag_size; /* Fragment size */
- __le32 s_blocks_per_group; /* # Blocks per group */
- __le32 s_frags_per_group; /* # Fragments per group */
- __le32 s_inodes_per_group; /* # Inodes per group */
- __le32 s_mtime; /* Mount time */
- __le32 s_wtime; /* Write time */
- __le16 s_mnt_count; /* Mount count */
- __le16 s_max_mnt_count; /* Maximal mount count */
- __le16 s_magic; /* Magic signature */
- __le16 s_state; /* File system state */
- __le16 s_errors; /* Behaviour when detecting errors */
- __le16 s_minor_rev_level; /* minor revision level */
- __le32 s_lastcheck; /* time of last check */
- __le32 s_checkinterval; /* max. time between checks */
- __le32 s_creator_os; /* OS */
- __le32 s_rev_level; /* Revision level */
- __le16 s_def_resuid; /* Default uid for reserved blocks */
- __le16 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...
- */
- __le32 s_first_ino; /* First non-reserved inode */
- __le16 s_inode_size; /* size of inode structure */
- __le16 s_block_group_nr; /* block group # of this superblock */
- __le32 s_feature_compat; /* compatible feature set */
- __le32 s_feature_incompat; /* incompatible feature set */
- __le32 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 */
- __le32 s_algorithm_usage_bitmap; /* For compression */
- /*
- * Performance hints. Directory preallocation should only
- * happen if the EXT2_COMPAT_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_padding1;
- /*
- * Journaling support valid if EXT3_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_reserved_char_pad;
- __u16 s_reserved_word_pad;
- __le32 s_default_mount_opts;
- __le32 s_first_meta_bg; /* First metablock block group */
- __u32 s_reserved[190]; /* 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
-
-/*
- * Feature set definitions
- */
-
-#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
- ( EXT2_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
-#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \
- ( EXT2_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
-#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
- ( EXT2_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
-#define EXT2_SET_COMPAT_FEATURE(sb,mask) \
- EXT2_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
-#define EXT2_SET_RO_COMPAT_FEATURE(sb,mask) \
- EXT2_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
-#define EXT2_SET_INCOMPAT_FEATURE(sb,mask) \
- EXT2_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
-#define EXT2_CLEAR_COMPAT_FEATURE(sb,mask) \
- EXT2_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
-#define EXT2_CLEAR_RO_COMPAT_FEATURE(sb,mask) \
- EXT2_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
-#define EXT2_CLEAR_INCOMPAT_FEATURE(sb,mask) \
- EXT2_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(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_INO 0x0010
-#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
-#define EXT2_FEATURE_COMPAT_ANY 0xffffffff
-
-#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
-#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
-#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
-#define EXT2_FEATURE_RO_COMPAT_ANY 0xffffffff
-
-#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
-#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
-#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
-#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
-#define EXT2_FEATURE_INCOMPAT_ANY 0xffffffff
-
-#define EXT2_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
-#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
- EXT2_FEATURE_INCOMPAT_META_BG)
-#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
- EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
-#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP
-#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP
-
-/*
- * 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
- /* Not used by ext2, but reserved for use by ext3 */
-#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 {
- __le32 inode; /* Inode number */
- __le16 rec_len; /* Directory entry length */
- __le16 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 {
- __le32 inode; /* Inode number */
- __le16 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.
- */
-enum {
- EXT2_FT_UNKNOWN = 0,
- EXT2_FT_REG_FILE = 1,
- EXT2_FT_DIR = 2,
- EXT2_FT_CHRDEV = 3,
- EXT2_FT_BLKDEV = 4,
- EXT2_FT_FIFO = 5,
- EXT2_FT_SOCK = 6,
- EXT2_FT_SYMLINK = 7,
- EXT2_FT_MAX
-};
-
-/*
- * 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)
-#define EXT2_MAX_REC_LEN ((1<<16)-1)
-
#endif /* _LINUX_EXT2_FS_H */
projects / karo-tx-linux.git / blobdiff