busybox: backport upstream fixes for ext2 related tools

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33662 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 1441 insertions, 0 deletions

diff --git a/package/busybox/patches/007-upstream_mkfs_ext2_fixes.patch b/package/busybox/patches/007-upstream_mkfs_ext2_fixes.patch
new file mode 100644
index 0000000000..e488838958
--- /dev/null
+++ b/package/busybox/patches/007-upstream_mkfs_ext2_fixes.patch
@@ -0,0 +1,1441 @@
+--- a/e2fsprogs/e2fs_defs.h
++++ /dev/null
+@@ -1,561 +0,0 @@
+-/* vi: set sw=4 ts=4: */
+-/*
+- *  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)
+- *
+- * Copyright (C) 1991, 1992  Linus Torvalds
+- */
+-
+-#ifndef LINUX_EXT2_FS_H
+-#define LINUX_EXT2_FS_H 1
+-
+-/*
+- * 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
+-
+-/* 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)
+-
+-/*
+- * 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)
+-#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)
+-#define EXT2_ADDR_PER_BLOCK(s)	(EXT2_BLOCK_SIZE(s) / sizeof(uint32_t))
+-
+-/*
+- * 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
+-#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))
+-
+-/*
+- * ACL structures
+- */
+-struct ext2_acl_header {	/* Header of Access Control Lists */
+-	uint32_t	aclh_size;
+-	uint32_t	aclh_file_count;
+-	uint32_t	aclh_acle_count;
+-	uint32_t	aclh_first_acle;
+-};
+-
+-struct ext2_acl_entry {	/* Access Control List Entry */
+-	uint32_t	acle_size;
+-	uint16_t	acle_perms;	/* Access permissions */
+-	uint16_t	acle_type;	/* Type of entry */
+-	uint16_t	acle_tag;	/* User or group identity */
+-	uint16_t	acle_pad1;
+-	uint32_t	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 {
+-	uint32_t	bg_block_bitmap;	/* Blocks bitmap block */
+-	uint32_t	bg_inode_bitmap;	/* Inodes bitmap block */
+-	uint32_t	bg_inode_table;		/* Inodes table block */
+-	uint16_t	bg_free_blocks_count;	/* Free blocks count */
+-	uint16_t	bg_free_inodes_count;	/* Free inodes count */
+-	uint16_t	bg_used_dirs_count;	/* Directories count */
+-	uint16_t	bg_pad;
+-	uint32_t	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 {
+-	uint32_t	reserved_zero;
+-	uint8_t		hash_version; /* 0 now, 1 at release */
+-	uint8_t		info_length; /* 8 */
+-	uint8_t		indirect_levels;
+-	uint8_t		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 {
+-	uint32_t hash;
+-	uint32_t block;
+-};
+-
+-struct ext2_dx_countlimit {
+-	uint16_t limit;
+-	uint16_t 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))
+-#define EXT2_DESC_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
+-
+-/*
+- * 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 {
+-	uint16_t	i_mode;		/* File mode */
+-	uint16_t	i_uid;		/* Low 16 bits of Owner Uid */
+-	uint32_t	i_size;		/* Size in bytes */
+-	uint32_t	i_atime;	/* Access time */
+-	uint32_t	i_ctime;	/* Creation time */
+-	uint32_t	i_mtime;	/* Modification time */
+-	uint32_t	i_dtime;	/* Deletion Time */
+-	uint16_t	i_gid;		/* Low 16 bits of Group Id */
+-	uint16_t	i_links_count;	/* Links count */
+-	uint32_t	i_blocks;	/* Blocks count */
+-	uint32_t	i_flags;	/* File flags */
+-	union {
+-		struct {
+-			uint32_t  l_i_reserved1;
+-		} linux1;
+-		struct {
+-			uint32_t  h_i_translator;
+-		} hurd1;
+-		struct {
+-			uint32_t  m_i_reserved1;
+-		} masix1;
+-	} osd1;				/* OS dependent 1 */
+-	uint32_t	i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
+-	uint32_t	i_generation;	/* File version (for NFS) */
+-	uint32_t	i_file_acl;	/* File ACL */
+-	uint32_t	i_dir_acl;	/* Directory ACL */
+-	uint32_t	i_faddr;	/* Fragment address */
+-	union {
+-		struct {
+-			uint8_t		l_i_frag;	/* Fragment number */
+-			uint8_t		l_i_fsize;	/* Fragment size */
+-			uint16_t	i_pad1;
+-			uint16_t	l_i_uid_high;	/* these 2 fields    */
+-			uint16_t	l_i_gid_high;	/* were reserved2[0] */
+-			uint32_t	l_i_reserved2;
+-		} linux2;
+-		struct {
+-			uint8_t		h_i_frag;	/* Fragment number */
+-			uint8_t		h_i_fsize;	/* Fragment size */
+-			uint16_t	h_i_mode_high;
+-			uint16_t	h_i_uid_high;
+-			uint16_t	h_i_gid_high;
+-			uint32_t	h_i_author;
+-		} hurd2;
+-		struct {
+-			uint8_t		m_i_frag;	/* Fragment number */
+-			uint8_t		m_i_fsize;	/* Fragment size */
+-			uint16_t	m_pad1;
+-			uint32_t	m_i_reserved2[2];
+-		} masix2;
+-	} osd2;				/* OS dependent 2 */
+-};
+-
+-/*
+- * Permanent part of an large inode on the disk
+- */
+-struct ext2_inode_large {
+-	uint16_t	i_mode;		/* File mode */
+-	uint16_t	i_uid;		/* Low 16 bits of Owner Uid */
+-	uint32_t	i_size;		/* Size in bytes */
+-	uint32_t	i_atime;	/* Access time */
+-	uint32_t	i_ctime;	/* Creation time */
+-	uint32_t	i_mtime;	/* Modification time */
+-	uint32_t	i_dtime;	/* Deletion Time */
+-	uint16_t	i_gid;		/* Low 16 bits of Group Id */
+-	uint16_t	i_links_count;	/* Links count */
+-	uint32_t	i_blocks;	/* Blocks count */
+-	uint32_t	i_flags;	/* File flags */
+-	union {
+-		struct {
+-			uint32_t  l_i_reserved1;
+-		} linux1;
+-		struct {
+-			uint32_t  h_i_translator;
+-		} hurd1;
+-		struct {
+-			uint32_t  m_i_reserved1;
+-		} masix1;
+-	} osd1;				/* OS dependent 1 */
+-	uint32_t	i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
+-	uint32_t	i_generation;	/* File version (for NFS) */
+-	uint32_t	i_file_acl;	/* File ACL */
+-	uint32_t	i_dir_acl;	/* Directory ACL */
+-	uint32_t	i_faddr;	/* Fragment address */
+-	union {
+-		struct {
+-			uint8_t		l_i_frag;	/* Fragment number */
+-			uint8_t		l_i_fsize;	/* Fragment size */
+-			uint16_t	i_pad1;
+-			uint16_t	l_i_uid_high;	/* these 2 fields    */
+-			uint16_t	l_i_gid_high;	/* were reserved2[0] */
+-			uint32_t	l_i_reserved2;
+-		} linux2;
+-		struct {
+-			uint8_t		h_i_frag;	/* Fragment number */
+-			uint8_t		h_i_fsize;	/* Fragment size */
+-			uint16_t	h_i_mode_high;
+-			uint16_t	h_i_uid_high;
+-			uint16_t	h_i_gid_high;
+-			uint32_t	h_i_author;
+-		} hurd2;
+-		struct {
+-			uint8_t		m_i_frag;	/* Fragment number */
+-			uint8_t		m_i_fsize;	/* Fragment size */
+-			uint16_t	m_pad1;
+-			uint32_t	m_i_reserved2[2];
+-		} masix2;
+-	} osd2;				/* OS dependent 2 */
+-	uint16_t	i_extra_isize;
+-	uint16_t	i_pad1;
+-};
+-
+-#define i_size_high	i_dir_acl
+-
+-/*
+- * 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 {
+-	uint32_t	s_inodes_count;		/* Inodes count */
+-	uint32_t	s_blocks_count;		/* Blocks count */
+-	uint32_t	s_r_blocks_count;	/* Reserved blocks count */
+-	uint32_t	s_free_blocks_count;	/* Free blocks count */
+-	uint32_t	s_free_inodes_count;	/* Free inodes count */
+-	uint32_t	s_first_data_block;	/* First Data Block */
+-	uint32_t	s_log_block_size;	/* Block size */
+-	int32_t		s_log_frag_size;	/* Fragment size */
+-	uint32_t	s_blocks_per_group;	/* # Blocks per group */
+-	uint32_t	s_frags_per_group;	/* # Fragments per group */
+-	uint32_t	s_inodes_per_group;	/* # Inodes per group */
+-	uint32_t	s_mtime;		/* Mount time */
+-	uint32_t	s_wtime;		/* Write time */
+-	uint16_t	s_mnt_count;		/* Mount count */
+-	int16_t		s_max_mnt_count;	/* Maximal mount count */
+-	uint16_t	s_magic;		/* Magic signature */
+-	uint16_t	s_state;		/* File system state */
+-	uint16_t	s_errors;		/* Behaviour when detecting errors */
+-	uint16_t	s_minor_rev_level;	/* minor revision level */
+-	uint32_t	s_lastcheck;		/* time of last check */
+-	uint32_t	s_checkinterval;	/* max. time between checks */
+-	uint32_t	s_creator_os;		/* OS */
+-	uint32_t	s_rev_level;		/* Revision level */
+-	uint16_t	s_def_resuid;		/* Default uid for reserved blocks */
+-	uint16_t	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...
+-	 */
+-	uint32_t	s_first_ino;		/* First non-reserved inode */
+-	uint16_t	s_inode_size;		/* size of inode structure */
+-	uint16_t	s_block_group_nr;	/* block group # of this superblock */
+-	uint32_t	s_feature_compat;	/* compatible feature set */
+-	uint32_t	s_feature_incompat;	/* incompatible feature set */
+-	uint32_t	s_feature_ro_compat;	/* readonly-compatible feature set */
+-	uint8_t		s_uuid[16];		/* 128-bit uuid for volume */
+-	char		s_volume_name[16];	/* volume name */
+-	char		s_last_mounted[64];	/* directory where last mounted */
+-	uint32_t	s_algorithm_usage_bitmap; /* For compression */
+-	/*
+-	 * Performance hints.  Directory preallocation should only
+-	 * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
+-	 */
+-	uint8_t	s_prealloc_blocks;	/* Nr of blocks to try to preallocate*/
+-	uint8_t	s_prealloc_dir_blocks;	/* Nr to preallocate for dirs */
+-	uint16_t	s_reserved_gdt_blocks;	/* Per group table for online growth */
+-	/*
+-	 * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
+-	 */
+-	uint8_t		s_journal_uuid[16];	/* uuid of journal superblock */
+-	uint32_t	s_journal_inum;		/* inode number of journal file */
+-	uint32_t	s_journal_dev;		/* device number of journal file */
+-	uint32_t	s_last_orphan;		/* start of list of inodes to delete */
+-	uint32_t	s_hash_seed[4];		/* HTREE hash seed */
+-	uint8_t		s_def_hash_version;	/* Default hash version to use */
+-	uint8_t		s_jnl_backup_type;	/* Default type of journal backup */
+-	uint16_t	s_reserved_word_pad;
+-	uint32_t	s_default_mount_opts;
+-	uint32_t	s_first_meta_bg;	/* First metablock group */
+-	uint32_t	s_mkfs_time;		/* When the filesystem was created */
+-	uint32_t	s_jnl_blocks[17];	/* Backup of the journal inode */
+-	uint32_t	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 {
+-	uint32_t	inode;			/* Inode number */
+-	uint16_t	rec_len;		/* Directory entry length */
+-	uint16_t	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 {
+-	uint32_t	inode;			/* Inode number */
+-	uint16_t	rec_len;		/* Directory entry length */
+-	uint8_t		name_len;		/* Name length */
+-	uint8_t		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
+--- a/e2fsprogs/e2fs_lib.h
++++ b/e2fsprogs/e2fs_lib.h
+@@ -7,7 +7,7 @@
+  */
+ 
+ /* Constants and structures */
+-#include "e2fs_defs.h"
++#include "bb_e2fs_defs.h"
+ 
+ PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
+ 
+--- a/e2fsprogs/old_e2fsprogs/e2fsck.c
++++ b/e2fsprogs/old_e2fsprogs/e2fsck.c
+@@ -11577,7 +11577,7 @@ static void check_resize_inode(e2fsck_t 
+ 	 * s_reserved_gdt_blocks must be zero.
+ 	 */
+ 	if (!(fs->super->s_feature_compat &
+-	      EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
++	      EXT2_FEATURE_COMPAT_RESIZE_INO)) {
+ 		if (fs->super->s_reserved_gdt_blocks) {
+ 			pctx.num = fs->super->s_reserved_gdt_blocks;
+ 			if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS,
+@@ -11593,7 +11593,7 @@ static void check_resize_inode(e2fsck_t 
+ 	retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode);
+ 	if (retval) {
+ 		if (fs->super->s_feature_compat &
+-		    EXT2_FEATURE_COMPAT_RESIZE_INODE)
++		    EXT2_FEATURE_COMPAT_RESIZE_INO)
+ 			ctx->flags |= E2F_FLAG_RESIZE_INODE;
+ 		return;
+ 	}
+@@ -11603,7 +11603,7 @@ static void check_resize_inode(e2fsck_t 
+ 	 * the resize inode is cleared; then we're done.
+ 	 */
+ 	if (!(fs->super->s_feature_compat &
+-	      EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
++	      EXT2_FEATURE_COMPAT_RESIZE_INO)) {
+ 		for (i=0; i < EXT2_N_BLOCKS; i++) {
+ 			if (inode.i_block[i])
+ 				break;
+--- a/e2fsprogs/old_e2fsprogs/e2p/feature.c
++++ b/e2fsprogs/old_e2fsprogs/e2p/feature.c
+@@ -34,7 +34,7 @@ static const struct feature feature_list
+ 			"ext_attr" },
+ 	{	E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX,
+ 			"dir_index" },
+-	{	E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_RESIZE_INODE,
++	{	E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_RESIZE_INO,
+ 			"resize_inode" },
+ 	{	E2P_FEATURE_RO_INCOMPAT, EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER,
+ 			"sparse_super" },
+--- a/e2fsprogs/old_e2fsprogs/ext2fs/ext2_fs.h
++++ b/e2fsprogs/old_e2fsprogs/ext2fs/ext2_fs.h
+@@ -475,7 +475,7 @@ struct ext2_super_block {
+ #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_RESIZE_INO		0x0010
+ #define EXT2_FEATURE_COMPAT_DIR_INDEX		0x0020
+ 
+ #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER	0x0001
+--- a/e2fsprogs/old_e2fsprogs/ext2fs/ext2fs.h
++++ b/e2fsprogs/old_e2fsprogs/ext2fs/ext2fs.h
+@@ -383,7 +383,7 @@ typedef struct ext2_icount *ext2_icount_
+ #define EXT2_LIB_FEATURE_COMPAT_SUPP	(EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
+ 					 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
+ 					 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
+-					 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
++					 EXT2_FEATURE_COMPAT_RESIZE_INO|\
+ 					 EXT2_FEATURE_COMPAT_DIR_INDEX|\
+ 					 EXT2_FEATURE_COMPAT_EXT_ATTR)
+ 
+--- a/e2fsprogs/old_e2fsprogs/ext2fs/initialize.c
++++ b/e2fsprogs/old_e2fsprogs/ext2fs/initialize.c
+@@ -284,7 +284,7 @@ retry:
+ 	/*
+ 	 * check the number of reserved group descriptor table blocks
+ 	 */
+-	if (super->s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)
++	if (super->s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INO)
+ 		rsv_gdt = calc_reserved_gdt_blocks(fs);
+ 	else
+ 		rsv_gdt = 0;
+--- a/e2fsprogs/old_e2fsprogs/mke2fs.c
++++ b/e2fsprogs/old_e2fsprogs/mke2fs.c
+@@ -757,7 +757,7 @@ static void parse_extended_opts(struct e
+ 
+ 			if (rsv_gdb > 0) {
+ 				sb_param->s_feature_compat |=
+-					EXT2_FEATURE_COMPAT_RESIZE_INODE;
++					EXT2_FEATURE_COMPAT_RESIZE_INO;
+ 
+ 				sb_param->s_reserved_gdt_blocks = rsv_gdb;
+ 			}
+@@ -778,7 +778,7 @@ static void parse_extended_opts(struct e
+ 
+ static __u32 ok_features[3] = {
+ 	EXT3_FEATURE_COMPAT_HAS_JOURNAL |
+-		EXT2_FEATURE_COMPAT_RESIZE_INODE |
++		EXT2_FEATURE_COMPAT_RESIZE_INO |
+ 		EXT2_FEATURE_COMPAT_DIR_INDEX,  /* Compat */
+ 	EXT2_FEATURE_INCOMPAT_FILETYPE|         /* Incompat */
+ 		EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
+@@ -1123,7 +1123,7 @@ static int PRS(int argc, char **argv)
+ 	/* Since sparse_super is the default, we would only have a problem
+ 	 * here if it was explicitly disabled.
+ 	 */
+-	if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
++	if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INO) &&
+ 	    !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
+ 		bb_error_msg_and_die("reserved online resize blocks not supported "
+ 			  "on non-sparse filesystem");
+@@ -1312,7 +1312,7 @@ int mke2fs_main (int argc, char **argv)
+ 		reserve_inodes(fs);
+ 		create_bad_block_inode(fs, bb_list);
+ 		if (fs->super->s_feature_compat &
+-		    EXT2_FEATURE_COMPAT_RESIZE_INODE) {
++		    EXT2_FEATURE_COMPAT_RESIZE_INO) {
+ 			retval = ext2fs_create_resize_inode(fs);
+ 			mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
+ 		}
+--- a/e2fsprogs/tune2fs.c
++++ b/e2fsprogs/tune2fs.c
+@@ -8,7 +8,7 @@
+  */
+ #include "libbb.h"
+ #include <linux/fs.h>
+-#include <linux/ext2_fs.h>
++#include "bb_e2fs_defs.h"
+ 
+ // storage helpers
+ char BUG_wrong_field_size(void);
+--- /dev/null
++++ b/include/bb_e2fs_defs.h
+@@ -0,0 +1,602 @@
++/* vi: set sw=4 ts=4: */
++/*
++ *  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)
++ *
++ * Copyright (C) 1991, 1992  Linus Torvalds
++ */
++
++#ifndef LINUX_EXT2_FS_H
++#define LINUX_EXT2_FS_H 1
++
++/*
++ * 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
++
++/* 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)
++
++/*
++ * 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)
++#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)
++#define EXT2_ADDR_PER_BLOCK(s)	(EXT2_BLOCK_SIZE(s) / sizeof(uint32_t))
++
++/*
++ * 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
++#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))
++
++/*
++ * ACL structures
++ */
++struct ext2_acl_header {	/* Header of Access Control Lists */
++	uint32_t	aclh_size;
++	uint32_t	aclh_file_count;
++	uint32_t	aclh_acle_count;
++	uint32_t	aclh_first_acle;
++};
++
++struct ext2_acl_entry {	/* Access Control List Entry */
++	uint32_t	acle_size;
++	uint16_t	acle_perms;	/* Access permissions */
++	uint16_t	acle_type;	/* Type of entry */
++	uint16_t	acle_tag;	/* User or group identity */
++	uint16_t	acle_pad1;
++	uint32_t	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 {
++	uint32_t	bg_block_bitmap;	/* Blocks bitmap block */
++	uint32_t	bg_inode_bitmap;	/* Inodes bitmap block */
++	uint32_t	bg_inode_table;		/* Inodes table block */
++	uint16_t	bg_free_blocks_count;	/* Free blocks count */
++	uint16_t	bg_free_inodes_count;	/* Free inodes count */
++	uint16_t	bg_used_dirs_count;	/* Directories count */
++	uint16_t	bg_pad;
++	uint32_t	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 {
++	uint32_t	reserved_zero;
++	uint8_t		hash_version; /* 0 now, 1 at release */
++	uint8_t		info_length; /* 8 */
++	uint8_t		indirect_levels;
++	uint8_t		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 {
++	uint32_t hash;
++	uint32_t block;
++};
++
++struct ext2_dx_countlimit {
++	uint16_t limit;
++	uint16_t 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))
++#define EXT2_DESC_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
++
++/*
++ * 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 {
++	uint16_t	i_mode;		/* File mode */
++	uint16_t	i_uid;		/* Low 16 bits of Owner Uid */
++	uint32_t	i_size;		/* Size in bytes */
++	uint32_t	i_atime;	/* Access time */
++	uint32_t	i_ctime;	/* Creation time */
++	uint32_t	i_mtime;	/* Modification time */
++	uint32_t	i_dtime;	/* Deletion Time */
++	uint16_t	i_gid;		/* Low 16 bits of Group Id */
++	uint16_t	i_links_count;	/* Links count */
++	uint32_t	i_blocks;	/* Blocks count */
++	uint32_t	i_flags;	/* File flags */
++	union {
++		struct {
++			uint32_t  l_i_reserved1;
++		} linux1;
++		struct {
++			uint32_t  h_i_translator;
++		} hurd1;
++		struct {
++			uint32_t  m_i_reserved1;
++		} masix1;
++	} osd1;				/* OS dependent 1 */
++	uint32_t	i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
++	uint32_t	i_generation;	/* File version (for NFS) */
++	uint32_t	i_file_acl;	/* File ACL */
++	uint32_t	i_dir_acl;	/* Directory ACL */
++	uint32_t	i_faddr;	/* Fragment address */
++	union {
++		struct {
++			uint8_t		l_i_frag;	/* Fragment number */
++			uint8_t		l_i_fsize;	/* Fragment size */
++			uint16_t	i_pad1;
++			uint16_t	l_i_uid_high;	/* these 2 fields    */
++			uint16_t	l_i_gid_high;	/* were reserved2[0] */
++			uint32_t	l_i_reserved2;
++		} linux2;
++		struct {
++			uint8_t		h_i_frag;	/* Fragment number */
++			uint8_t		h_i_fsize;	/* Fragment size */
++			uint16_t	h_i_mode_high;
++			uint16_t	h_i_uid_high;
++			uint16_t	h_i_gid_high;
++			uint32_t	h_i_author;
++		} hurd2;
++		struct {
++			uint8_t		m_i_frag;	/* Fragment number */
++			uint8_t		m_i_fsize;	/* Fragment size */
++			uint16_t	m_pad1;
++			uint32_t	m_i_reserved2[2];
++		} masix2;
++	} osd2;				/* OS dependent 2 */
++};
++
++/*
++ * Permanent part of an large inode on the disk
++ */
++struct ext2_inode_large {
++	uint16_t	i_mode;		/* File mode */
++	uint16_t	i_uid;		/* Low 16 bits of Owner Uid */
++	uint32_t	i_size;		/* Size in bytes */
++	uint32_t	i_atime;	/* Access time */
++	uint32_t	i_ctime;	/* Creation time */
++	uint32_t	i_mtime;	/* Modification time */
++	uint32_t	i_dtime;	/* Deletion Time */
++	uint16_t	i_gid;		/* Low 16 bits of Group Id */
++	uint16_t	i_links_count;	/* Links count */
++	uint32_t	i_blocks;	/* Blocks count */
++	uint32_t	i_flags;	/* File flags */
++	union {
++		struct {
++			uint32_t  l_i_reserved1;
++		} linux1;
++		struct {
++			uint32_t  h_i_translator;
++		} hurd1;
++		struct {
++			uint32_t  m_i_reserved1;
++		} masix1;
++	} osd1;				/* OS dependent 1 */
++	uint32_t	i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
++	uint32_t	i_generation;	/* File version (for NFS) */
++	uint32_t	i_file_acl;	/* File ACL */
++	uint32_t	i_dir_acl;	/* Directory ACL */
++	uint32_t	i_faddr;	/* Fragment address */
++	union {
++		struct {
++			uint8_t		l_i_frag;	/* Fragment number */
++			uint8_t		l_i_fsize;	/* Fragment size */
++			uint16_t	i_pad1;
++			uint16_t	l_i_uid_high;	/* these 2 fields    */
++			uint16_t	l_i_gid_high;	/* were reserved2[0] */
++			uint32_t	l_i_reserved2;
++		} linux2;
++		struct {
++			uint8_t		h_i_frag;	/* Fragment number */
++			uint8_t		h_i_fsize;	/* Fragment size */
++			uint16_t	h_i_mode_high;
++			uint16_t	h_i_uid_high;
++			uint16_t	h_i_gid_high;
++			uint32_t	h_i_author;
++		} hurd2;
++		struct {
++			uint8_t		m_i_frag;	/* Fragment number */
++			uint8_t		m_i_fsize;	/* Fragment size */
++			uint16_t	m_pad1;
++			uint32_t	m_i_reserved2[2];
++		} masix2;
++	} osd2;				/* OS dependent 2 */
++	uint16_t	i_extra_isize;
++	uint16_t	i_pad1;
++};
++
++#define i_size_high	i_dir_acl
++
++/*
++ * 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 {
++	uint32_t	s_inodes_count;		/* Inodes count */
++	uint32_t	s_blocks_count;		/* Blocks count */
++	uint32_t	s_r_blocks_count;	/* Reserved blocks count */
++	uint32_t	s_free_blocks_count;	/* Free blocks count */
++	uint32_t	s_free_inodes_count;	/* Free inodes count */
++	uint32_t	s_first_data_block;	/* First Data Block */
++	uint32_t	s_log_block_size;	/* Block size */
++	int32_t		s_log_frag_size;	/* Fragment size */
++	uint32_t	s_blocks_per_group;	/* # Blocks per group */
++	uint32_t	s_frags_per_group;	/* # Fragments per group */
++	uint32_t	s_inodes_per_group;	/* # Inodes per group */
++	uint32_t	s_mtime;		/* Mount time */
++	uint32_t	s_wtime;		/* Write time */
++	uint16_t	s_mnt_count;		/* Mount count */
++	int16_t		s_max_mnt_count;	/* Maximal mount count */
++	uint16_t	s_magic;		/* Magic signature */
++	uint16_t	s_state;		/* File system state */
++	uint16_t	s_errors;		/* Behaviour when detecting errors */
++	uint16_t	s_minor_rev_level;	/* minor revision level */
++	uint32_t	s_lastcheck;		/* time of last check */
++	uint32_t	s_checkinterval;	/* max. time between checks */
++	uint32_t	s_creator_os;		/* OS */
++	uint32_t	s_rev_level;		/* Revision level */
++	uint16_t	s_def_resuid;		/* Default uid for reserved blocks */
++	uint16_t	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...
++	 */
++	uint32_t	s_first_ino;		/* First non-reserved inode */
++	uint16_t	s_inode_size;		/* size of inode structure */
++	uint16_t	s_block_group_nr;	/* block group # of this superblock */
++	uint32_t	s_feature_compat;	/* compatible feature set */
++	uint32_t	s_feature_incompat;	/* incompatible feature set */
++	uint32_t	s_feature_ro_compat;	/* readonly-compatible feature set */
++	uint8_t		s_uuid[16];		/* 128-bit uuid for volume */
++	char		s_volume_name[16];	/* volume name */
++	char		s_last_mounted[64];	/* directory where last mounted */
++	uint32_t	s_algorithm_usage_bitmap; /* For compression */
++	/*
++	 * Performance hints.  Directory preallocation should only
++	 * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
++	 */
++	uint8_t		s_prealloc_blocks;	/* Nr of blocks to try to preallocate*/
++	uint8_t		s_prealloc_dir_blocks;	/* Nr to preallocate for dirs */
++	uint16_t	s_reserved_gdt_blocks;	/* Per group table for online growth */
++	/*
++	 * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
++	 */
++/*D0*/	uint8_t		s_journal_uuid[16];	/* uuid of journal superblock */
++/*E0*/	uint32_t	s_journal_inum;		/* inode number of journal file */
++	uint32_t	s_journal_dev;		/* device number of journal file */
++	uint32_t	s_last_orphan;		/* start of list of inodes to delete */
++	uint32_t	s_hash_seed[4];		/* HTREE hash seed */
++	uint8_t		s_def_hash_version;	/* Default hash version to use */
++	uint8_t		s_jnl_backup_type;	/* Default type of journal backup */
++	uint16_t	s_reserved_word_pad;
++/*100*/	uint32_t	s_default_mount_opts;
++	uint32_t	s_first_meta_bg;	/* First metablock group */
++	/* ext3 additions */
++	uint32_t	s_mkfs_time;		/* When the filesystem was created */
++	uint32_t	s_jnl_blocks[17];	/* Backup of the journal inode */
++	/* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */
++/*150*/	uint32_t	s_blocks_count_hi;	/* Blocks count */
++	uint32_t	s_r_blocks_count_hi;	/* Reserved blocks count */
++	uint32_t	s_free_blocks_count_hi;	/* Free blocks count */
++	uint16_t	s_min_extra_isize;	/* All inodes have at least # bytes */
++	uint16_t	s_want_extra_isize; 	/* New inodes should reserve # bytes */
++	uint32_t	s_flags;		/* Miscellaneous flags */
++	uint16_t	s_raid_stride;		/* RAID stride */
++	uint16_t	s_mmp_interval;		/* # seconds to wait in MMP checking */
++	uint64_t	s_mmp_block;		/* Block for multi-mount protection */
++	uint32_t	s_raid_stripe_width;	/* blocks on all data disks (N*stride)*/
++	uint8_t		s_log_groups_per_flex;	/* FLEX_BG group size */
++	uint8_t		s_reserved_char_pad2;
++	uint16_t	s_reserved_pad;
++	uint32_t	s_reserved[162];	/* Padding to the end of the block */
++};
++struct BUG_ext2_super_block {
++        char bug[sizeof(struct ext2_super_block) == 1024 ? 1 : -1];
++};
++
++/*
++ * 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) )
++
++/* for s_feature_compat */
++#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
++
++/* for s_feature_ro_compat */
++#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 EXT4_FEATURE_RO_COMPAT_HUGE_FILE	0x0008
++#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM		0x0010
++#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK	0x0020
++#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE	0x0040
++
++/* for s_feature_incompat */
++#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 EXT4_FEATURE_INCOMPAT_EXTENTS		0x0040
++#define EXT4_FEATURE_INCOMPAT_64BIT		0x0080
++#define EXT4_FEATURE_INCOMPAT_MMP		0x0100
++#define EXT4_FEATURE_INCOMPAT_FLEX_BG		0x0200
++
++
++#define EXT2_FEATURE_COMPAT_SUPP	0
++#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_INCOMPAT_SUPP	(EXT2_FEATURE_INCOMPAT_FILETYPE| \
++					 EXT2_FEATURE_INCOMPAT_META_BG)
++#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED	(~EXT2_FEATURE_INCOMPAT_SUPP)
++#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED	(~EXT2_FEATURE_RO_COMPAT_SUPP)
++
++#define EXT3_FEATURE_RO_COMPAT_SUPP	(EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
++					 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
++					 EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
++#define EXT3_FEATURE_INCOMPAT_SUPP	(EXT2_FEATURE_INCOMPAT_FILETYPE| \
++					 EXT3_FEATURE_INCOMPAT_RECOVER| \
++					 EXT2_FEATURE_INCOMPAT_META_BG)
++#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED	(~EXT3_FEATURE_INCOMPAT_SUPP)
++#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED	(~EXT3_FEATURE_RO_COMPAT_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
++#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 {
++	uint32_t	inode;			/* Inode number */
++	uint16_t	rec_len;		/* Directory entry length */
++	uint16_t	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 {
++	uint32_t	inode;			/* Inode number */
++	uint16_t	rec_len;		/* Directory entry length */
++	uint8_t		name_len;		/* Name length */
++	uint8_t		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
+--- a/testsuite/mount.tests
++++ b/testsuite/mount.tests
+@@ -36,7 +36,8 @@ testing "mount -o remount,mand" \
+ "mount -o loop mount.image1m $testdir "\
+ "&& grep -Fc $testdir </proc/mounts "\
+ "&& mount -o remount,mand $testdir "\
+-"&& grep -F $testdir </proc/mounts | grep -c '[, ]mand[, ]'" \
++"&& grep -F $testdir </proc/mounts | grep -c '[, ]mand[, ]'"\
++"|| grep -F $testdir </proc/mounts" \
+ 	"1\n""1\n" \
+ 	"" ""
+ 
+@@ -83,4 +84,28 @@ b
+ 	"" ""
+ SKIP=
+ 
++
++testing "mount RO loop" "\
++exec 2>&1
++umount -d mount.dir 2>/dev/null
++rmdir mount.dir     2>/dev/null
++mkdir -p mount.dir
++(
++cd mount.dir                               || { echo 'cd error'; exit 1; }
++mkdir z1 z2                                || { echo 'mkdir error'; exit 1; }
++mount -t tmpfs tmpfs z1                    || { echo 'mount tmpfs error'; exit 1; }
++dd if=/dev/zero of=z1/e2img count=10 bs=1M 2>/dev/null || { echo 'dd error'; exit 1; }
++mke2fs -F z1/e2img                         2>/dev/null >&2 || { echo 'mke2fs error'; exit 1; }
++mount -r -o loop -t ext2 z1/e2img z2       || { echo 'mount -r -o loop error'; exit 1; }
++mount -o remount,ro z1                     || { echo 'mount -o remount,ro error'; exit 1; }
++)
++umount -d mount.dir/z2
++##losetup -d /dev/loop*
++umount -d mount.dir/z1
++rm -rf mount.dir
++echo DONE
++" \
++"DONE\n" "" ""
++
++
+ exit $FAILCOUNT
+--- a/util-linux/mkfs_ext2.c
++++ b/util-linux/mkfs_ext2.c
+@@ -48,16 +48,11 @@
+ 
+ #include "libbb.h"
+ #include <linux/fs.h>
+-#include <linux/ext2_fs.h>
++#include "bb_e2fs_defs.h"
+ 
+ #define ENABLE_FEATURE_MKFS_EXT2_RESERVED_GDT 0
+ #define ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX    1
+ 
+-// from e2fsprogs
+-#define s_reserved_gdt_blocks s_padding1
+-#define s_mkfs_time           s_reserved[0]
+-#define s_flags               s_reserved[22]
+-
+ #define EXT2_HASH_HALF_MD4       1
+ #define EXT2_FLAGS_SIGNED_HASH   0x0001
+ #define EXT2_FLAGS_UNSIGNED_HASH 0x0002
+@@ -482,8 +477,10 @@ int mkfs_ext2_main(int argc UNUSED_PARAM
+ 	STORE_LE(sb->s_magic, EXT2_SUPER_MAGIC);
+ 	STORE_LE(sb->s_inode_size, inodesize);
+ 	// set "Required extra isize" and "Desired extra isize" fields to 28
+-	if (inodesize != sizeof(*inode))
+-		STORE_LE(sb->s_reserved[21], 0x001C001C);
++	if (inodesize != sizeof(*inode)) {
++		STORE_LE(sb->s_min_extra_isize, 0x001c);
++		STORE_LE(sb->s_want_extra_isize, 0x001c);
++	}
+ 	STORE_LE(sb->s_first_ino, EXT2_GOOD_OLD_FIRST_INO);
+ 	STORE_LE(sb->s_log_block_size, blocksize_log2 - EXT2_MIN_BLOCK_LOG_SIZE);
+ 	STORE_LE(sb->s_log_frag_size, blocksize_log2 - EXT2_MIN_BLOCK_LOG_SIZE);
+--- a/util-linux/volume_id/ext.c
++++ b/util-linux/volume_id/ext.c
+@@ -19,28 +19,8 @@
+  */
+ 
+ #include "volume_id_internal.h"
++#include "bb_e2fs_defs.h"
+ 
+-struct ext2_super_block {
+-	uint32_t	inodes_count;
+-	uint32_t	blocks_count;
+-	uint32_t	r_blocks_count;
+-	uint32_t	free_blocks_count;
+-	uint32_t	free_inodes_count;
+-	uint32_t	first_data_block;
+-	uint32_t	log_block_size;
+-	uint32_t	dummy3[7];
+-	uint8_t	magic[2];
+-	uint16_t	state;
+-	uint32_t	dummy5[8];
+-	uint32_t	feature_compat;
+-	uint32_t	feature_incompat;
+-	uint32_t	feature_ro_compat;
+-	uint8_t	uuid[16];
+-	uint8_t	volume_name[16];
+-} PACKED;
+-
+-#define EXT3_FEATURE_COMPAT_HAS_JOURNAL		0x00000004
+-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV	0x00000008
+ #define EXT_SUPERBLOCK_OFFSET			0x400
+ 
+ int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/)
+@@ -54,23 +34,27 @@ int FAST_FUNC volume_id_probe_ext(struct
+ 	if (es == NULL)
+ 		return -1;
+ 
+-	if (es->magic[0] != 0123 || es->magic[1] != 0357) {
++	if (es->s_magic != cpu_to_le16(EXT2_SUPER_MAGIC)) {
+ 		dbg("ext: no magic found");
+ 		return -1;
+ 	}
+ 
+ //	volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
+ //	volume_id_set_label_raw(id, es->volume_name, 16);
+-	volume_id_set_label_string(id, es->volume_name, 16);
+-	volume_id_set_uuid(id, es->uuid, UUID_DCE);
++	volume_id_set_label_string(id, (void*)es->s_volume_name, 16);
++	volume_id_set_uuid(id, es->s_uuid, UUID_DCE);
+ 	dbg("ext: label '%s' uuid '%s'", id->label, id->uuid);
+ 
+ #if ENABLE_FEATURE_BLKID_TYPE
+-	if ((le32_to_cpu(es->feature_compat) & EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0)
++	if ((es->s_feature_ro_compat & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_HUGE_FILE | EXT4_FEATURE_RO_COMPAT_DIR_NLINK))
++	 || (es->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_EXTENTS | EXT4_FEATURE_INCOMPAT_64BIT))
++	) {
++		id->type = "ext4";
++	}
++	else if (es->s_feature_compat & cpu_to_le32(EXT3_FEATURE_COMPAT_HAS_JOURNAL))
+ 		id->type = "ext3";
+ 	else
+ 		id->type = "ext2";
+ #endif
+-
+ 	return 0;
+ }