libc/kernel/common/linux/ext2_fs.h - android_bionic - Gitiles

 /****************************************************************************
  ****************************************************************************
  ***
  ***   This header was automatically generated from a Linux kernel header
  ***   of the same name, to make information necessary for userspace to
  ***   call into the kernel available to libc.  It contains only constants,
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _LINUX_EXT2_FS_H
 #define _LINUX_EXT2_FS_H

 #include <linux/types.h>

 #undef EXT2FS_DEBUG

 #define EXT2_PREALLOCATE
 #define EXT2_DEFAULT_PREALLOC_BLOCKS 8

 #define EXT2FS_DATE "95/08/09"
 #define EXT2FS_VERSION "0.5b"

 #ifdef EXT2FS_DEBUG
 #define ext2_debug(f, a...) {   printk ("EXT2-fs DEBUG (%s, %d): %s:",   __FILE__, __LINE__, __FUNCTION__);   printk (f, ## a);   }
 #else
 #define ext2_debug(f, a...)
 #endif

 #define EXT2_BAD_INO 1
 #define EXT2_ROOT_INO 2
 #define EXT2_BOOT_LOADER_INO 5
 #define EXT2_UNDEL_DIR_INO 6

 #define EXT2_GOOD_OLD_FIRST_INO 11

 #define EXT2_SUPER_MAGIC 0xEF53

 #define EXT2_SB(sb) (sb)

 #define EXT2_LINK_MAX 32000

 #define EXT2_MIN_BLOCK_SIZE 1024
 #define EXT2_MAX_BLOCK_SIZE 4096
 #define EXT2_MIN_BLOCK_LOG_SIZE 10
 #define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
 #define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
 #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)

 #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_MIN_FRAG_SIZE << (s)->s_log_frag_size)
 #define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))

 struct ext2_group_desc
 {
  __le32 bg_block_bitmap;
  __le32 bg_inode_bitmap;
  __le32 bg_inode_table;
  __le16 bg_free_blocks_count;
  __le16 bg_free_inodes_count;
  __le16 bg_used_dirs_count;
  __le16 bg_pad;
  __le32 bg_reserved[3];
 };

 #define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
 #define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
 #define EXT2_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)

 #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)

 #define EXT2_SECRM_FL 0x00000001
 #define EXT2_UNRM_FL 0x00000002
 #define EXT2_COMPR_FL 0x00000004
 #define EXT2_SYNC_FL 0x00000008
 #define EXT2_IMMUTABLE_FL 0x00000010
 #define EXT2_APPEND_FL 0x00000020
 #define EXT2_NODUMP_FL 0x00000040
 #define EXT2_NOATIME_FL 0x00000080

 #define EXT2_DIRTY_FL 0x00000100
 #define EXT2_COMPRBLK_FL 0x00000200
 #define EXT2_NOCOMP_FL 0x00000400
 #define EXT2_ECOMPR_FL 0x00000800

 #define EXT2_BTREE_FL 0x00001000
 #define EXT2_INDEX_FL 0x00001000
 #define EXT2_IMAGIC_FL 0x00002000
 #define EXT2_JOURNAL_DATA_FL 0x00004000
 #define EXT2_NOTAIL_FL 0x00008000
 #define EXT2_DIRSYNC_FL 0x00010000
 #define EXT2_TOPDIR_FL 0x00020000
 #define EXT2_RESERVED_FL 0x80000000

 #define EXT2_FL_USER_VISIBLE 0x0003DFFF
 #define EXT2_FL_USER_MODIFIABLE 0x000380FF

 #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)

 struct ext2_inode {
  __le16 i_mode;
  __le16 i_uid;
  __le32 i_size;
  __le32 i_atime;
  __le32 i_ctime;
  __le32 i_mtime;
  __le32 i_dtime;
  __le16 i_gid;
  __le16 i_links_count;
  __le32 i_blocks;
  __le32 i_flags;
  union {
  struct {
  __le32 l_i_reserved1;
  } linux1;
  struct {
  __le32 h_i_translator;
  } hurd1;
  struct {
  __le32 m_i_reserved1;
  } masix1;
  } osd1;
  __le32 i_block[EXT2_N_BLOCKS];
  __le32 i_generation;
  __le32 i_file_acl;
  __le32 i_dir_acl;
  __le32 i_faddr;
  union {
  struct {
  __u8 l_i_frag;
  __u8 l_i_fsize;
  __u16 i_pad1;
  __le16 l_i_uid_high;
  __le16 l_i_gid_high;
  __u32 l_i_reserved2;
  } linux2;
  struct {
  __u8 h_i_frag;
  __u8 h_i_fsize;
  __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;
  __u8 m_i_fsize;
  __u16 m_pad1;
  __u32 m_i_reserved2[2];
  } masix2;
  } osd2;
 };

 #define i_size_high i_dir_acl

 #ifdef __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
 #endif

 #ifdef __hurd__
 #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
 #endif

 #ifdef __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

 #define EXT2_VALID_FS 0x0001
 #define EXT2_ERROR_FS 0x0002

 #define EXT2_MOUNT_CHECK 0x000001
 #define EXT2_MOUNT_OLDALLOC 0x000002
 #define EXT2_MOUNT_GRPID 0x000004
 #define EXT2_MOUNT_DEBUG 0x000008
 #define EXT2_MOUNT_ERRORS_CONT 0x000010
 #define EXT2_MOUNT_ERRORS_RO 0x000020
 #define EXT2_MOUNT_ERRORS_PANIC 0x000040
 #define EXT2_MOUNT_MINIX_DF 0x000080
 #define EXT2_MOUNT_NOBH 0x000100
 #define EXT2_MOUNT_NO_UID32 0x000200
 #define EXT2_MOUNT_XATTR_USER 0x004000
 #define EXT2_MOUNT_POSIX_ACL 0x008000
 #define EXT2_MOUNT_XIP 0x010000
 #define EXT2_MOUNT_USRQUOTA 0x020000
 #define EXT2_MOUNT_GRPQUOTA 0x040000

 #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)

 #define EXT2_DFL_MAX_MNT_COUNT 20
 #define EXT2_DFL_CHECKINTERVAL 0

 #define EXT2_ERRORS_CONTINUE 1
 #define EXT2_ERRORS_RO 2
 #define EXT2_ERRORS_PANIC 3
 #define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE

 struct ext2_super_block {
  __le32 s_inodes_count;
  __le32 s_blocks_count;
  __le32 s_r_blocks_count;
  __le32 s_free_blocks_count;
  __le32 s_free_inodes_count;
  __le32 s_first_data_block;
  __le32 s_log_block_size;
  __le32 s_log_frag_size;
  __le32 s_blocks_per_group;
  __le32 s_frags_per_group;
  __le32 s_inodes_per_group;
  __le32 s_mtime;
  __le32 s_wtime;
  __le16 s_mnt_count;
  __le16 s_max_mnt_count;
  __le16 s_magic;
  __le16 s_state;
  __le16 s_errors;
  __le16 s_minor_rev_level;
  __le32 s_lastcheck;
  __le32 s_checkinterval;
  __le32 s_creator_os;
  __le32 s_rev_level;
  __le16 s_def_resuid;
  __le16 s_def_resgid;

  __le32 s_first_ino;
  __le16 s_inode_size;
  __le16 s_block_group_nr;
  __le32 s_feature_compat;
  __le32 s_feature_incompat;
  __le32 s_feature_ro_compat;
  __u8 s_uuid[16];
  char s_volume_name[16];
  char s_last_mounted[64];
  __le32 s_algorithm_usage_bitmap;

  __u8 s_prealloc_blocks;
  __u8 s_prealloc_dir_blocks;
  __u16 s_padding1;

  __u8 s_journal_uuid[16];
  __u32 s_journal_inum;
  __u32 s_journal_dev;
  __u32 s_last_orphan;
  __u32 s_hash_seed[4];
  __u8 s_def_hash_version;
  __u8 s_reserved_char_pad;
  __u16 s_reserved_word_pad;
  __le32 s_default_mount_opts;
  __le32 s_first_meta_bg;
  __u32 s_reserved[190];
 };

 #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

 #define EXT2_GOOD_OLD_REV 0
 #define EXT2_DYNAMIC_REV 1

 #define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
 #define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV

 #define EXT2_GOOD_OLD_INODE_SIZE 128

 #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

 #define EXT2_DEF_RESUID 0
 #define EXT2_DEF_RESGID 0

 #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

 #define EXT2_NAME_LEN 255

 struct ext2_dir_entry {
  __le32 inode;
  __le16 rec_len;
  __le16 name_len;
  char name[EXT2_NAME_LEN];
 };

 struct ext2_dir_entry_2 {
  __le32 inode;
  __le16 rec_len;
  __u8 name_len;
  __u8 file_type;
  char name[EXT2_NAME_LEN];
 };

 enum {
  EXT2_FT_UNKNOWN,
  EXT2_FT_REG_FILE,
  EXT2_FT_DIR,
  EXT2_FT_CHRDEV,
  EXT2_FT_BLKDEV,
  EXT2_FT_FIFO,
  EXT2_FT_SOCK,
  EXT2_FT_SYMLINK,
  EXT2_FT_MAX
 };

 #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
	/****************************************************************************
	****************************************************************************
	***
	*** This header was automatically generated from a Linux kernel header
	*** of the same name, to make information necessary for userspace to
	*** call into the kernel available to libc. It contains only constants,
	*** structures, and macros generated from the original header, and thus,
	*** contains no copyrightable information.
	***
	****************************************************************************
	****************************************************************************/
	#ifndef _LINUX_EXT2_FS_H
	#define _LINUX_EXT2_FS_H

	#include <linux/types.h>

	#undef EXT2FS_DEBUG

	#define EXT2_PREALLOCATE
	#define EXT2_DEFAULT_PREALLOC_BLOCKS 8

	#define EXT2FS_DATE "95/08/09"
	#define EXT2FS_VERSION "0.5b"

	#ifdef EXT2FS_DEBUG
	#define ext2_debug(f, a...) { printk ("EXT2-fs DEBUG (%s, %d): %s:", __FILE__, __LINE__, __FUNCTION__); printk (f, ## a); }
	#else
	#define ext2_debug(f, a...)
	#endif

	#define EXT2_BAD_INO 1
	#define EXT2_ROOT_INO 2
	#define EXT2_BOOT_LOADER_INO 5
	#define EXT2_UNDEL_DIR_INO 6

	#define EXT2_GOOD_OLD_FIRST_INO 11

	#define EXT2_SUPER_MAGIC 0xEF53

	#define EXT2_SB(sb) (sb)

	#define EXT2_LINK_MAX 32000

	#define EXT2_MIN_BLOCK_SIZE 1024
	#define EXT2_MAX_BLOCK_SIZE 4096
	#define EXT2_MIN_BLOCK_LOG_SIZE 10
	#define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
	#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
	#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)

	#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_MIN_FRAG_SIZE << (s)->s_log_frag_size)
	#define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))

	struct ext2_group_desc
	{
	__le32 bg_block_bitmap;
	__le32 bg_inode_bitmap;
	__le32 bg_inode_table;
	__le16 bg_free_blocks_count;
	__le16 bg_free_inodes_count;
	__le16 bg_used_dirs_count;
	__le16 bg_pad;
	__le32 bg_reserved[3];
	};

	#define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
	#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
	#define EXT2_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)

	#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)

	#define EXT2_SECRM_FL 0x00000001
	#define EXT2_UNRM_FL 0x00000002
	#define EXT2_COMPR_FL 0x00000004
	#define EXT2_SYNC_FL 0x00000008
	#define EXT2_IMMUTABLE_FL 0x00000010
	#define EXT2_APPEND_FL 0x00000020
	#define EXT2_NODUMP_FL 0x00000040
	#define EXT2_NOATIME_FL 0x00000080

	#define EXT2_DIRTY_FL 0x00000100
	#define EXT2_COMPRBLK_FL 0x00000200
	#define EXT2_NOCOMP_FL 0x00000400
	#define EXT2_ECOMPR_FL 0x00000800

	#define EXT2_BTREE_FL 0x00001000
	#define EXT2_INDEX_FL 0x00001000
	#define EXT2_IMAGIC_FL 0x00002000
	#define EXT2_JOURNAL_DATA_FL 0x00004000
	#define EXT2_NOTAIL_FL 0x00008000
	#define EXT2_DIRSYNC_FL 0x00010000
	#define EXT2_TOPDIR_FL 0x00020000
	#define EXT2_RESERVED_FL 0x80000000

	#define EXT2_FL_USER_VISIBLE 0x0003DFFF
	#define EXT2_FL_USER_MODIFIABLE 0x000380FF

	#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)

	struct ext2_inode {
	__le16 i_mode;
	__le16 i_uid;
	__le32 i_size;
	__le32 i_atime;
	__le32 i_ctime;
	__le32 i_mtime;
	__le32 i_dtime;
	__le16 i_gid;
	__le16 i_links_count;
	__le32 i_blocks;
	__le32 i_flags;
	union {
	struct {
	__le32 l_i_reserved1;
	} linux1;
	struct {
	__le32 h_i_translator;
	} hurd1;
	struct {
	__le32 m_i_reserved1;
	} masix1;
	} osd1;
	__le32 i_block[EXT2_N_BLOCKS];
	__le32 i_generation;
	__le32 i_file_acl;
	__le32 i_dir_acl;
	__le32 i_faddr;
	union {
	struct {
	__u8 l_i_frag;
	__u8 l_i_fsize;
	__u16 i_pad1;
	__le16 l_i_uid_high;
	__le16 l_i_gid_high;
	__u32 l_i_reserved2;
	} linux2;
	struct {
	__u8 h_i_frag;
	__u8 h_i_fsize;
	__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;
	__u8 m_i_fsize;
	__u16 m_pad1;
	__u32 m_i_reserved2[2];
	} masix2;
	} osd2;
	};

	#define i_size_high i_dir_acl

	#ifdef __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
	#endif

	#ifdef __hurd__
	#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
	#endif

	#ifdef __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

	#define EXT2_VALID_FS 0x0001
	#define EXT2_ERROR_FS 0x0002

	#define EXT2_MOUNT_CHECK 0x000001
	#define EXT2_MOUNT_OLDALLOC 0x000002
	#define EXT2_MOUNT_GRPID 0x000004
	#define EXT2_MOUNT_DEBUG 0x000008
	#define EXT2_MOUNT_ERRORS_CONT 0x000010
	#define EXT2_MOUNT_ERRORS_RO 0x000020
	#define EXT2_MOUNT_ERRORS_PANIC 0x000040
	#define EXT2_MOUNT_MINIX_DF 0x000080
	#define EXT2_MOUNT_NOBH 0x000100
	#define EXT2_MOUNT_NO_UID32 0x000200
	#define EXT2_MOUNT_XATTR_USER 0x004000
	#define EXT2_MOUNT_POSIX_ACL 0x008000
	#define EXT2_MOUNT_XIP 0x010000
	#define EXT2_MOUNT_USRQUOTA 0x020000
	#define EXT2_MOUNT_GRPQUOTA 0x040000

	#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)

	#define EXT2_DFL_MAX_MNT_COUNT 20
	#define EXT2_DFL_CHECKINTERVAL 0

	#define EXT2_ERRORS_CONTINUE 1
	#define EXT2_ERRORS_RO 2
	#define EXT2_ERRORS_PANIC 3
	#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE

	struct ext2_super_block {
	__le32 s_inodes_count;
	__le32 s_blocks_count;
	__le32 s_r_blocks_count;
	__le32 s_free_blocks_count;
	__le32 s_free_inodes_count;
	__le32 s_first_data_block;
	__le32 s_log_block_size;
	__le32 s_log_frag_size;
	__le32 s_blocks_per_group;
	__le32 s_frags_per_group;
	__le32 s_inodes_per_group;
	__le32 s_mtime;
	__le32 s_wtime;
	__le16 s_mnt_count;
	__le16 s_max_mnt_count;
	__le16 s_magic;
	__le16 s_state;
	__le16 s_errors;
	__le16 s_minor_rev_level;
	__le32 s_lastcheck;
	__le32 s_checkinterval;
	__le32 s_creator_os;
	__le32 s_rev_level;
	__le16 s_def_resuid;
	__le16 s_def_resgid;

	__le32 s_first_ino;
	__le16 s_inode_size;
	__le16 s_block_group_nr;
	__le32 s_feature_compat;
	__le32 s_feature_incompat;
	__le32 s_feature_ro_compat;
	__u8 s_uuid[16];
	char s_volume_name[16];
	char s_last_mounted[64];
	__le32 s_algorithm_usage_bitmap;

	__u8 s_prealloc_blocks;
	__u8 s_prealloc_dir_blocks;
	__u16 s_padding1;

	__u8 s_journal_uuid[16];
	__u32 s_journal_inum;
	__u32 s_journal_dev;
	__u32 s_last_orphan;
	__u32 s_hash_seed[4];
	__u8 s_def_hash_version;
	__u8 s_reserved_char_pad;
	__u16 s_reserved_word_pad;
	__le32 s_default_mount_opts;
	__le32 s_first_meta_bg;
	__u32 s_reserved[190];
	};

	#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

	#define EXT2_GOOD_OLD_REV 0
	#define EXT2_DYNAMIC_REV 1

	#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
	#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV

	#define EXT2_GOOD_OLD_INODE_SIZE 128

	#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

	#define EXT2_DEF_RESUID 0
	#define EXT2_DEF_RESGID 0

	#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

	#define EXT2_NAME_LEN 255

	struct ext2_dir_entry {
	__le32 inode;
	__le16 rec_len;
	__le16 name_len;
	char name[EXT2_NAME_LEN];
	};

	struct ext2_dir_entry_2 {
	__le32 inode;
	__le16 rec_len;
	__u8 name_len;
	__u8 file_type;
	char name[EXT2_NAME_LEN];
	};

	enum {
	EXT2_FT_UNKNOWN,
	EXT2_FT_REG_FILE,
	EXT2_FT_DIR,
	EXT2_FT_CHRDEV,
	EXT2_FT_BLKDEV,
	EXT2_FT_FIFO,
	EXT2_FT_SOCK,
	EXT2_FT_SYMLINK,
	EXT2_FT_MAX
	};

	#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