From daf017bc98276fecce1893c7e4db70cbd8c8f7a0 Mon Sep 17 00:00:00 2001
From: Alexander Kanavin <alex@linutronix.de>
Date: Fri, 16 Aug 2024 16:59:21 +0200
Subject: [PATCH] ext2_fs.h: do not carry an outdated copy

This copy is no longer compatible with latest e2fsprogs
(which installs a correct version).

Upstream-Status: Inactive-Upstream
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
---
 core/fs/ext2/ext2_fs.h        | 312 -------------
 libinstaller/ext2fs/ext2_fs.h | 856 ----------------------------------
 2 files changed, 1168 deletions(-)
 delete mode 100644 core/fs/ext2/ext2_fs.h
 delete mode 100644 libinstaller/ext2fs/ext2_fs.h

diff --git a/core/fs/ext2/ext2_fs.h b/core/fs/ext2/ext2_fs.h
deleted file mode 100644
index d8d07eb..0000000
--- a/core/fs/ext2/ext2_fs.h
+++ /dev/null
@@ -1,312 +0,0 @@
-#ifndef __EXT2_FS_H
-#define __EXT2_FS_H
-
-#include <stdint.h>
-
-#define	EXT2_SUPER_MAGIC	0xEF53
-
-#define EXT2_GOOD_OLD_REV       0       // The good old (original) format
-#define EXT2_DYNAMIC_REV        1       // V2 format w/ dynamic inode sizes
-#define EXT2_GOOD_OLD_INODE_SIZE 128
-
-// 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
-#define EXT3_RESIZE_INO		 7	// Reserved group descriptors inode
-#define EXT3_JOURNAL_INO	 8	// Journal inode
-
-// We're readonly, so we only care about incompat features.
-#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_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)
-
-
-/* for EXT4 extent */
-#define EXT4_EXT_MAGIC     0xf30a
-#define EXT4_EXTENTS_FLAG  0x00080000
-
-/*
- * File types and file modes
- */
-#define S_IFDIR		0040000	        // Directory
-#define S_IFCHR		0020000	        // Character device
-#define S_IFBLK		0060000		// Block device
-#define S_IFREG		0100000	        // Regular file
-#define S_IFIFO		0010000	        // FIFO
-#define S_IFLNK		0120000		// Symbolic link
-#define S_IFSOCK	0140000		// Socket
-
-#define S_IFSHIFT	12
-
-#define T_IFDIR		(S_IFDIR >> S_IFSHIFT)
-#define T_IFCHR		(S_IFCHR >> S_IFSHIFT)
-#define T_IFBLK		(S_IFBLK >> S_IFSHIFT)
-#define T_IFREG		(S_IFREG >> S_IFSHIFT)
-#define T_IFIFO		(S_IFIFO >> S_IFSHIFT)
-#define T_IFLNK		(S_IFLNK >> S_IFSHIFT)
-#define T_IFSOCK	(S_IFSOCK >> S_IFSHIFT)
-
-
-#define ext2_group_desc_lg2size 5
-
-
-
-/*
- * super block structure:
- * include/linux/ext2_fs.h
- */
-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 */
-    uint32_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;
-    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 */
-
-    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 */
-    uint8_t  s_prealloc_blocks;	        /* Nr of blocks to try to preallocate*/
-    uint8_t  s_prealloc_dir_blocks;
-    uint16_t s_reserved_gdt_blocks;	/* Per group desc for online growth */
-    /*
-     * Journaling support valid if EXT4_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_reserved_char_pad;
-    uint16_t s_desc_size;		/* size of group descriptor */
-    uint32_t s_default_mount_opts;
-    uint32_t s_first_meta_bg;	/* First metablock block group */
-    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 */
-    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 */
-};
-
-/*******************************************************************************
-#ifndef DEPEND
-#if ext2_super_block_size != 1024
-#error ext2_super_block definition bogus
-#endif
-#endif
-*******************************************************************************/
-
-/*
- *  ext2 group desc structure:
- */
-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];
-};
-
-/*******************************************************************************
-#ifndef DEPEND
-#if ext2_group_desc_size != 32
-#error ext2_group_desc definition bogus
-#endif
-#endif
-*******************************************************************************/
-
-
-/*
- * ext2 inode structure:
- */
-struct ext2_inode {
-    uint16_t i_mode;		/* File mode */
-    uint16_t i_uid;		/* Owner Uid */
-    uint32_t i_size;		/* 4: Size in bytes */
-    uint32_t i_atime;		/* Access time */
-    uint32_t i_ctime;		/* 12: Creation time */
-    uint32_t i_mtime;		/* Modification time */
-    uint32_t i_dtime;		/* 20: Deletion Time */
-    uint16_t i_gid;		/* Group Id */
-    uint16_t i_links_count;	/* 24: Links count */
-    uint32_t i_blocks;		/* Blocks count */
-    uint32_t i_flags;		/* 32: File flags */
-    uint32_t l_i_reserved1;
-    uint32_t i_block[EXT2_N_BLOCKS];	/* 40: Pointers to blocks */
-    uint32_t i_version;		/* File version (for NFS) */
-    uint32_t i_file_acl;	/* File ACL */
-    uint32_t i_dir_acl;		/* Directory ACL */
-    uint32_t i_faddr;		/* Fragment address */
-    uint8_t  l_i_frag;	        /* Fragment number */
-    uint8_t  l_i_fsize;	        /* Fragment size */
-    uint16_t i_pad1;
-    uint32_t l_i_reserved2[2];
-};
-
-/*******************************************************************************
-#ifndef DEPEND
-#if ext2_inode_size != 128
-#error ext2_inode definition bogus
-#endif
-#endif
-*******************************************************************************/
-
-
-#define EXT2_NAME_LEN 255
-struct ext2_dir_entry {
-    unsigned int	d_inode;		/* Inode number */
-    unsigned short	d_rec_len;		/* Directory entry length */
-    unsigned char	d_name_len;		/* Name length */
-    unsigned char	d_file_type;
-    char	d_name[EXT2_NAME_LEN];	        /* File name */
-};
-
-/*******************************************************************************
-#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)
-*******************************************************************************/
-
-
-
-
-
-
-/*
- * This is the extent on-disk structure.
- * It's used at the bottom of the tree.
- */
-struct ext4_extent {
-    uint32_t ee_block;	        /* first logical block extent covers */
-    uint16_t ee_len;	        /* number of blocks covered by extent */
-    uint16_t ee_start_hi;	/* high 16 bits of physical block */
-    uint32_t ee_start_lo;	/* low 32 bits of physical block */
-};
-
-/*
- * This is index on-disk structure.
- * It's used at all the levels except the bottom.
- */
-struct ext4_extent_idx {
-    uint32_t ei_block;	        /* index covers logical blocks from 'block' */
-    uint32_t ei_leaf_lo;	/* pointer to the physical block of the next *
-				 * level. leaf or next index could be there */
-    uint16_t ei_leaf_hi;	/* high 16 bits of physical block */
-    uint16_t ei_unused;
-};
-
-/*
- * Each block (leaves and indexes), even inode-stored has header.
- */
-struct ext4_extent_header {
-    uint16_t eh_magic;	        /* probably will support different formats */
-    uint16_t eh_entries;	/* number of valid entries */
-    uint16_t eh_max;	        /* capacity of store in entries */
-    uint16_t eh_depth;	        /* has tree real underlying blocks? */
-    uint32_t eh_generation;	/* generation of the tree */
-};
-
-
-
-#define EXT4_FIRST_EXTENT(header) ( (struct ext4_extent *)(header + 1) )
-#define EXT4_FIRST_INDEX(header)  ( (struct ext4_extent_idx *) (header + 1) )
-
-
-/*
- * The ext2 super block information in memory
- */
-struct ext2_sb_info {
-    uint32_t s_inodes_per_block;/* Number of inodes per block */
-    uint32_t s_inodes_per_group;/* Number of inodes in a group */
-    uint32_t s_blocks_per_group;/* Number of blocks in a group */
-    uint32_t s_desc_per_block;  /* Number of group descriptors per block */
-    uint32_t s_groups_count;    /* Number of groups in the fs */
-    uint32_t s_first_data_block;	/* First Data Block */
-    int      s_inode_size;
-    uint8_t  s_uuid[16];	/* 128-bit uuid for volume */
-    int      s_desc_size;	/* size of group descriptor */
-};
-
-static inline struct ext2_sb_info *EXT2_SB(struct fs_info *fs)
-{
-    return fs->fs_info;
-}
-
-#define EXT2_BLOCKS_PER_GROUP(fs)      (EXT2_SB(fs)->s_blocks_per_group)
-#define EXT2_INODES_PER_GROUP(fs)      (EXT2_SB(fs)->s_inodes_per_group)
-#define EXT2_INODES_PER_BLOCK(fs)      (EXT2_SB(fs)->s_inodes_per_block)
-#define EXT2_DESC_PER_BLOCK(fs)        (EXT2_SB(fs)->s_desc_per_block)
-
-/*
- * ext2 private inode information
- */
-struct ext2_pvt_inode {
-    union {
-	uint32_t i_block[EXT2_N_BLOCKS];
-	struct ext4_extent_header i_extent_hdr;
-    };
-};
-
-#define PVT(i) ((struct ext2_pvt_inode *)((i)->pvt))
-
-/*
- * functions
- */
-block_t ext2_bmap(struct inode *, block_t, size_t *);
-int ext2_next_extent(struct inode *, uint32_t);
-
-#endif /* ext2_fs.h */
diff --git a/libinstaller/ext2fs/ext2_fs.h b/libinstaller/ext2fs/ext2_fs.h
deleted file mode 100644
index e52c9e1..0000000
--- a/libinstaller/ext2fs/ext2_fs.h
+++ /dev/null
@@ -1,856 +0,0 @@
-/*
- *  linux/include/linux/ext2_fs.h
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card (card@masi.ibp.fr)
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- *  from
- *
- *  linux/include/linux/minix_fs.h
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- */
-
-#ifndef _EXT2FS_EXT2_FS_H
-#define _EXT2FS_EXT2_FS_H
-
-#include <linux/types.h>
-
-/*
- * The second extended filesystem constants/structures
- */
-
-/*
- * Define EXT2FS_DEBUG to produce debug messages
- */
-#undef EXT2FS_DEBUG
-
-/*
- * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files
- */
-#define EXT2_PREALLOCATE
-#define EXT2_DEFAULT_PREALLOC_BLOCKS	8
-
-/*
- * The second extended file system version
- */
-#define EXT2FS_DATE		"95/08/09"
-#define EXT2FS_VERSION		"0.5b"
-
-/*
- * Special inode numbers
- */
-#define EXT2_BAD_INO		 1	/* Bad blocks inode */
-#define EXT2_ROOT_INO		 2	/* Root inode */
-#define EXT4_USR_QUOTA_INO	 3	/* User quota inode */
-#define EXT4_GRP_QUOTA_INO	 4	/* Group quota 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 */
-#define EXT2_EXCLUDE_INO	 9	/* The "exclude" inode, for snapshots */
-#define EXT4_REPLICA_INO	10	/* Used by non-upstream feature */
-
-/* First non-reserved inode for old ext2 filesystems */
-#define EXT2_GOOD_OLD_FIRST_INO	11
-
-/*
- * The second extended file system magic number
- */
-#define EXT2_SUPER_MAGIC	0xEF53
-
-#ifdef __KERNEL__
-#define EXT2_SB(sb)	(&((sb)->u.ext2_sb))
-#else
-/* Assume that user mode programs are passing in an ext2fs superblock, not
- * a kernel struct super_block.  This will allow us to call the feature-test
- * macros from user land. */
-#define EXT2_SB(sb)	(sb)
-#endif
-
-/*
- * Maximal count of links to a file
- */
-#define EXT2_LINK_MAX		65000
-
-/*
- * Macro-instructions used to manage several block sizes
- */
-#define EXT2_MIN_BLOCK_LOG_SIZE		10	/* 1024 */
-#define EXT2_MAX_BLOCK_LOG_SIZE		16	/* 65536 */
-#define EXT2_MIN_BLOCK_SIZE	(1 << EXT2_MIN_BLOCK_LOG_SIZE)
-#define EXT2_MAX_BLOCK_SIZE	(1 << EXT2_MAX_BLOCK_LOG_SIZE)
-#ifdef __KERNEL__
-#define EXT2_BLOCK_SIZE(s)	((s)->s_blocksize)
-#define EXT2_BLOCK_SIZE_BITS(s)	((s)->s_blocksize_bits)
-#define EXT2_ADDR_PER_BLOCK_BITS(s)	(EXT2_SB(s)->addr_per_block_bits)
-#define EXT2_INODE_SIZE(s)	(EXT2_SB(s)->s_inode_size)
-#define EXT2_FIRST_INO(s)	(EXT2_SB(s)->s_first_ino)
-#else
-#define EXT2_BLOCK_SIZE(s)	(EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
-#define EXT2_BLOCK_SIZE_BITS(s)	((s)->s_log_block_size + 10)
-#define EXT2_INODE_SIZE(s)	(((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
-				 EXT2_GOOD_OLD_INODE_SIZE : (s)->s_inode_size)
-#define EXT2_FIRST_INO(s)	(((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
-				 EXT2_GOOD_OLD_FIRST_INO : (s)->s_first_ino)
-#endif
-#define EXT2_ADDR_PER_BLOCK(s)	(EXT2_BLOCK_SIZE(s) / sizeof(__u32))
-
-/*
- * Macro-instructions used to manage allocation clusters
- */
-#define EXT2_MIN_CLUSTER_LOG_SIZE	EXT2_MIN_BLOCK_LOG_SIZE
-#define EXT2_MAX_CLUSTER_LOG_SIZE	29	/* 512MB  */
-#define EXT2_MIN_CLUSTER_SIZE		EXT2_MIN_BLOCK_SIZE
-#define EXT2_MAX_CLUSTER_SIZE		(1 << EXT2_MAX_CLUSTER_LOG_SIZE)
-#define EXT2_CLUSTER_SIZE(s)		(EXT2_MIN_BLOCK_SIZE << \
-						(s)->s_log_cluster_size)
-#define EXT2_CLUSTER_SIZE_BITS(s)	((s)->s_log_cluster_size + 10)
-
-/*
- * Macro-instructions used to manage fragments
- *
- * Note: for backwards compatibility only, for the dump program.
- * Ext2/3/4 will never support 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_BLOCK_SIZE(s)
-#define EXT2_FRAGS_PER_BLOCK(s)		1
-
-/*
- * ACL structures
- */
-struct ext2_acl_header	/* Header of Access Control Lists */
-{
-	__u32	aclh_size;
-	__u32	aclh_file_count;
-	__u32	aclh_acle_count;
-	__u32	aclh_first_acle;
-};
-
-struct ext2_acl_entry	/* Access Control List Entry */
-{
-	__u32	acle_size;
-	__u16	acle_perms;	/* Access permissions */
-	__u16	acle_type;	/* Type of entry */
-	__u16	acle_tag;	/* User or group identity */
-	__u16	acle_pad1;
-	__u32	acle_next;	/* Pointer on next entry for the */
-					/* same inode or on next free entry */
-};
-
-/*
- * Structure of a blocks group descriptor
- */
-struct ext2_group_desc
-{
-	__u32	bg_block_bitmap;	/* Blocks bitmap block */
-	__u32	bg_inode_bitmap;	/* Inodes bitmap block */
-	__u32	bg_inode_table;		/* Inodes table block */
-	__u16	bg_free_blocks_count;	/* Free blocks count */
-	__u16	bg_free_inodes_count;	/* Free inodes count */
-	__u16	bg_used_dirs_count;	/* Directories count */
-	__u16	bg_flags;
-	__u32	bg_exclude_bitmap_lo;	/* Exclude bitmap for snapshots */
-	__u16	bg_block_bitmap_csum_lo;/* crc32c(s_uuid+grp_num+bitmap) LSB */
-	__u16	bg_inode_bitmap_csum_lo;/* crc32c(s_uuid+grp_num+bitmap) LSB */
-	__u16	bg_itable_unused;	/* Unused inodes count */
-	__u16	bg_checksum;		/* crc16(s_uuid+grouo_num+group_desc)*/
-};
-
-/*
- * Structure of a blocks group descriptor
- */
-struct ext4_group_desc
-{
-	__u32	bg_block_bitmap;	/* Blocks bitmap block */
-	__u32	bg_inode_bitmap;	/* Inodes bitmap block */
-	__u32	bg_inode_table;		/* Inodes table block */
-	__u16	bg_free_blocks_count;	/* Free blocks count */
-	__u16	bg_free_inodes_count;	/* Free inodes count */
-	__u16	bg_used_dirs_count;	/* Directories count */
-	__u16	bg_flags;		/* EXT4_BG_flags (INODE_UNINIT, etc) */
-	__u32	bg_exclude_bitmap_lo;	/* Exclude bitmap for snapshots */
-	__u16	bg_block_bitmap_csum_lo;/* crc32c(s_uuid+grp_num+bitmap) LSB */
-	__u16	bg_inode_bitmap_csum_lo;/* crc32c(s_uuid+grp_num+bitmap) LSB */
-	__u16	bg_itable_unused;	/* Unused inodes count */
-	__u16	bg_checksum;		/* crc16(sb_uuid+group+desc) */
-	__u32	bg_block_bitmap_hi;	/* Blocks bitmap block MSB */
-	__u32	bg_inode_bitmap_hi;	/* Inodes bitmap block MSB */
-	__u32	bg_inode_table_hi;	/* Inodes table block MSB */
-	__u16	bg_free_blocks_count_hi;/* Free blocks count MSB */
-	__u16	bg_free_inodes_count_hi;/* Free inodes count MSB */
-	__u16	bg_used_dirs_count_hi;	/* Directories count MSB */
-	__u16	bg_itable_unused_hi;	/* Unused inodes count MSB */
-	__u32	bg_exclude_bitmap_hi;	/* Exclude bitmap block MSB */
-	__u16	bg_block_bitmap_csum_hi;/* crc32c(s_uuid+grp_num+bitmap) MSB */
-	__u16	bg_inode_bitmap_csum_hi;/* crc32c(s_uuid+grp_num+bitmap) MSB */
-	__u32	bg_reserved;
-};
-
-#define EXT2_BG_INODE_UNINIT	0x0001 /* Inode table/bitmap not initialized */
-#define EXT2_BG_BLOCK_UNINIT	0x0002 /* Block bitmap not initialized */
-#define EXT2_BG_INODE_ZEROED	0x0004 /* On-disk itable initialized to zero */
-
-/*
- * Data structures used by the directory indexing feature
- *
- * Note: all of the multibyte integer fields are little endian.
- */
-
-/*
- * Note: dx_root_info is laid out so that if it should somehow get
- * overlaid by a dirent the two low bits of the hash version will be
- * zero.  Therefore, the hash version mod 4 should never be 0.
- * Sincerely, the paranoia department.
- */
-struct ext2_dx_root_info {
-	__u32 reserved_zero;
-	__u8 hash_version; /* 0 now, 1 at release */
-	__u8 info_length; /* 8 */
-	__u8 indirect_levels;
-	__u8 unused_flags;
-};
-
-#define EXT2_HASH_LEGACY		0
-#define EXT2_HASH_HALF_MD4		1
-#define EXT2_HASH_TEA			2
-#define EXT2_HASH_LEGACY_UNSIGNED	3 /* reserved for userspace lib */
-#define EXT2_HASH_HALF_MD4_UNSIGNED	4 /* reserved for userspace lib */
-#define EXT2_HASH_TEA_UNSIGNED		5 /* reserved for userspace lib */
-
-#define EXT2_HASH_FLAG_INCOMPAT	0x1
-
-struct ext2_dx_entry {
-	__u32 hash;
-	__u32 block;
-};
-
-struct ext2_dx_countlimit {
-	__u16 limit;
-	__u16 count;
-};
-
-
-/*
- * Macro-instructions used to manage group descriptors
- */
-#define EXT2_MIN_DESC_SIZE             32
-#define EXT2_MIN_DESC_SIZE_64BIT       64
-#define EXT2_MAX_DESC_SIZE             EXT2_MIN_BLOCK_SIZE
-#define EXT2_DESC_SIZE(s)                                                \
-       ((EXT2_SB(s)->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) ? \
-	(s)->s_desc_size : EXT2_MIN_DESC_SIZE)
-
-#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_CLUSTERS_PER_GROUP(s)	(EXT2_SB(s)->s_clusters_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)	((((unsigned) 1 << 16) - 8) *	\
-					 (EXT2_CLUSTER_SIZE(s) / \
-					  EXT2_BLOCK_SIZE(s)))
-#define EXT2_MAX_CLUSTERS_PER_GROUP(s)	(((unsigned) 1 << 16) - 8)
-#define EXT2_MAX_INODES_PER_GROUP(s)	(((unsigned) 1 << 16) - \
-					 EXT2_INODES_PER_BLOCK(s))
-#ifdef __KERNEL__
-#define EXT2_DESC_PER_BLOCK(s)		(EXT2_SB(s)->s_desc_per_block)
-#define EXT2_DESC_PER_BLOCK_BITS(s)	(EXT2_SB(s)->s_desc_per_block_bits)
-#else
-#define EXT2_DESC_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / EXT2_DESC_SIZE(s))
-#endif
-
-/*
- * Constants relative to the data blocks
- */
-#define EXT2_NDIR_BLOCKS		12
-#define EXT2_IND_BLOCK			EXT2_NDIR_BLOCKS
-#define EXT2_DIND_BLOCK			(EXT2_IND_BLOCK + 1)
-#define EXT2_TIND_BLOCK			(EXT2_DIND_BLOCK + 1)
-#define EXT2_N_BLOCKS			(EXT2_TIND_BLOCK + 1)
-
-/*
- * Inode flags
- */
-#define EXT2_SECRM_FL			0x00000001 /* Secure deletion */
-#define EXT2_UNRM_FL			0x00000002 /* Undelete */
-#define EXT2_COMPR_FL			0x00000004 /* Compress file */
-#define EXT2_SYNC_FL			0x00000008 /* Synchronous updates */
-#define EXT2_IMMUTABLE_FL		0x00000010 /* Immutable file */
-#define EXT2_APPEND_FL			0x00000020 /* writes to file may only append */
-#define EXT2_NODUMP_FL			0x00000040 /* do not dump file */
-#define EXT2_NOATIME_FL			0x00000080 /* do not update atime */
-/* Reserved for compression usage... */
-#define EXT2_DIRTY_FL			0x00000100
-#define EXT2_COMPRBLK_FL		0x00000200 /* One or more compressed clusters */
-#define EXT2_NOCOMPR_FL			0x00000400 /* Access raw compressed data */
-#define EXT2_ECOMPR_FL			0x00000800 /* Compression error */
-/* End compression flags --- maybe not all used */
-#define EXT2_BTREE_FL			0x00001000 /* btree format dir */
-#define EXT2_INDEX_FL			0x00001000 /* hash-indexed directory */
-#define EXT2_IMAGIC_FL			0x00002000
-#define EXT3_JOURNAL_DATA_FL		0x00004000 /* file data should be journaled */
-#define EXT2_NOTAIL_FL			0x00008000 /* file tail should not be merged */
-#define EXT2_DIRSYNC_FL 		0x00010000 /* Synchronous directory modifications */
-#define EXT2_TOPDIR_FL			0x00020000 /* Top of directory hierarchies*/
-#define EXT4_HUGE_FILE_FL               0x00040000 /* Set to each huge file */
-#define EXT4_EXTENTS_FL 		0x00080000 /* Inode uses extents */
-#define EXT4_EA_INODE_FL	        0x00200000 /* Inode used for large EA */
-/* EXT4_EOFBLOCKS_FL 0x00400000 was here */
-#define EXT4_SNAPFILE_FL		0x01000000  /* Inode is a snapshot */
-#define EXT4_SNAPFILE_DELETED_FL	0x04000000  /* Snapshot is being deleted */
-#define EXT4_SNAPFILE_SHRUNK_FL		0x08000000  /* Snapshot shrink has completed */
-#define EXT2_RESERVED_FL		0x80000000 /* reserved for ext2 lib */
-
-#define EXT2_FL_USER_VISIBLE		0x004BDFFF /* User visible flags */
-#define EXT2_FL_USER_MODIFIABLE		0x004B80FF /* User modifiable flags */
-
-/*
- * ioctl commands
- */
-
-/* Used for online resize */
-struct ext2_new_group_input {
-	__u32 group;		/* Group number for this data */
-	__u32 block_bitmap;	/* Absolute block number of block bitmap */
-	__u32 inode_bitmap;	/* Absolute block number of inode bitmap */
-	__u32 inode_table;	/* Absolute block number of inode table start */
-	__u32 blocks_count;	/* Total number of blocks in this group */
-	__u16 reserved_blocks;	/* Number of reserved blocks in this group */
-	__u16 unused;		/* Number of reserved GDT blocks in group */
-};
-
-struct ext4_new_group_input {
-	__u32 group;		/* Group number for this data */
-	__u64 block_bitmap;	/* Absolute block number of block bitmap */
-	__u64 inode_bitmap;	/* Absolute block number of inode bitmap */
-	__u64 inode_table;	/* Absolute block number of inode table start */
-	__u32 blocks_count;	/* Total number of blocks in this group */
-	__u16 reserved_blocks;	/* Number of reserved blocks in this group */
-	__u16 unused;
-};
-
-#ifdef __GNU__			/* Needed for the Hurd */
-#define _IOT_ext2_new_group_input _IOT (_IOTS(__u32), 5, _IOTS(__u16), 2, 0, 0)
-#endif
-
-#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)
-#define EXT2_IOC_GETVERSION_NEW		_IOR('f', 3, long)
-#define EXT2_IOC_SETVERSION_NEW		_IOW('f', 4, long)
-#define EXT2_IOC_GROUP_EXTEND		_IOW('f', 7, unsigned long)
-#define EXT2_IOC_GROUP_ADD		_IOW('f', 8,struct ext2_new_group_input)
-#define EXT4_IOC_GROUP_ADD		_IOW('f', 8,struct ext4_new_group_input)
-#define EXT4_IOC_RESIZE_FS		_IOW('f', 16, __u64)
-
-/*
- * Structure of an inode on the disk
- */
-struct ext2_inode {
-	__u16	i_mode;		/* File mode */
-	__u16	i_uid;		/* Low 16 bits of Owner Uid */
-	__u32	i_size;		/* Size in bytes */
-	__u32	i_atime;	/* Access time */
-	__u32	i_ctime;	/* Inode change time */
-	__u32	i_mtime;	/* Modification time */
-	__u32	i_dtime;	/* Deletion Time */
-	__u16	i_gid;		/* Low 16 bits of Group Id */
-	__u16	i_links_count;	/* Links count */
-	__u32	i_blocks;	/* Blocks count */
-	__u32	i_flags;	/* File flags */
-	union {
-		struct {
-			__u32	l_i_version; /* was l_i_reserved1 */
-		} linux1;
-		struct {
-			__u32  h_i_translator;
-		} hurd1;
-	} osd1;				/* OS dependent 1 */
-	__u32	i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
-	__u32	i_generation;	/* File version (for NFS) */
-	__u32	i_file_acl;	/* File ACL */
-	__u32	i_size_high;	/* Formerly i_dir_acl, directory ACL */
-	__u32	i_faddr;	/* Fragment address */
-	union {
-		struct {
-			__u16	l_i_blocks_hi;
-			__u16	l_i_file_acl_high;
-			__u16	l_i_uid_high;	/* these 2 fields    */
-			__u16	l_i_gid_high;	/* were reserved2[0] */
-			__u16	l_i_checksum_lo; /* crc32c(uuid+inum+inode) */
-			__u16	l_i_reserved;
-		} linux2;
-		struct {
-			__u8	h_i_frag;	/* Fragment number */
-			__u8	h_i_fsize;	/* Fragment size */
-			__u16	h_i_mode_high;
-			__u16	h_i_uid_high;
-			__u16	h_i_gid_high;
-			__u32	h_i_author;
-		} hurd2;
-	} osd2;				/* OS dependent 2 */
-};
-
-/*
- * Permanent part of an large inode on the disk
- */
-struct ext2_inode_large {
-	__u16	i_mode;		/* File mode */
-	__u16	i_uid;		/* Low 16 bits of Owner Uid */
-	__u32	i_size;		/* Size in bytes */
-	__u32	i_atime;	/* Access time */
-	__u32	i_ctime;	/* Inode Change time */
-	__u32	i_mtime;	/* Modification time */
-	__u32	i_dtime;	/* Deletion Time */
-	__u16	i_gid;		/* Low 16 bits of Group Id */
-	__u16	i_links_count;	/* Links count */
-	__u32	i_blocks;	/* Blocks count */
-	__u32	i_flags;	/* File flags */
-	union {
-		struct {
-			__u32	l_i_version; /* was l_i_reserved1 */
-		} linux1;
-		struct {
-			__u32  h_i_translator;
-		} hurd1;
-	} osd1;				/* OS dependent 1 */
-	__u32	i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
-	__u32	i_generation;	/* File version (for NFS) */
-	__u32	i_file_acl;	/* File ACL */
-	__u32	i_size_high;	/* Formerly i_dir_acl, directory ACL */
-	__u32	i_faddr;	/* Fragment address */
-	union {
-		struct {
-			__u16	l_i_blocks_hi;
-			__u16	l_i_file_acl_high;
-			__u16	l_i_uid_high;	/* these 2 fields    */
-			__u16	l_i_gid_high;	/* were reserved2[0] */
-			__u16	l_i_checksum_lo; /* crc32c(uuid+inum+inode) */
-			__u16	l_i_reserved;
-		} linux2;
-		struct {
-			__u8	h_i_frag;	/* Fragment number */
-			__u8	h_i_fsize;	/* Fragment size */
-			__u16	h_i_mode_high;
-			__u16	h_i_uid_high;
-			__u16	h_i_gid_high;
-			__u32	h_i_author;
-		} hurd2;
-	} osd2;				/* OS dependent 2 */
-	__u16	i_extra_isize;
-	__u16	i_checksum_hi;	/* crc32c(uuid+inum+inode) */
-	__u32	i_ctime_extra;	/* extra Change time (nsec << 2 | epoch) */
-	__u32	i_mtime_extra;	/* extra Modification time (nsec << 2 | epoch) */
-	__u32	i_atime_extra;	/* extra Access time (nsec << 2 | epoch) */
-	__u32	i_crtime;	/* File creation time */
-	__u32	i_crtime_extra;	/* extra File creation time (nsec << 2 | epoch)*/
-	__u32	i_version_hi;	/* high 32 bits for 64-bit version */
-};
-
-#define i_dir_acl	i_size_high
-
-#if defined(__KERNEL__) || defined(__linux__)
-#define i_reserved1	osd1.linux1.l_i_reserved1
-#define i_frag		osd2.linux2.l_i_frag
-#define i_fsize		osd2.linux2.l_i_fsize
-#define i_uid_low	i_uid
-#define i_gid_low	i_gid
-#define i_uid_high	osd2.linux2.l_i_uid_high
-#define i_gid_high	osd2.linux2.l_i_gid_high
-#else
-#if defined(__GNU__)
-
-#define i_translator	osd1.hurd1.h_i_translator
-#define i_frag		osd2.hurd2.h_i_frag;
-#define i_fsize		osd2.hurd2.h_i_fsize;
-#define i_uid_high	osd2.hurd2.h_i_uid_high
-#define i_gid_high	osd2.hurd2.h_i_gid_high
-#define i_author	osd2.hurd2.h_i_author
-
-#endif  /* __GNU__ */
-#endif	/* defined(__KERNEL__) || defined(__linux__) */
-
-#define inode_uid(inode)	((inode).i_uid | (inode).osd2.linux2.l_i_uid_high << 16)
-#define inode_gid(inode)	((inode).i_gid | (inode).osd2.linux2.l_i_gid_high << 16)
-#define ext2fs_set_i_uid_high(inode,x) ((inode).osd2.linux2.l_i_uid_high = (x))
-#define ext2fs_set_i_gid_high(inode,x) ((inode).osd2.linux2.l_i_gid_high = (x))
-
-/*
- * File system states
- */
-#define EXT2_VALID_FS			0x0001	/* Unmounted cleanly */
-#define EXT2_ERROR_FS			0x0002	/* Errors detected */
-#define EXT3_ORPHAN_FS			0x0004	/* Orphans being recovered */
-
-/*
- * Misc. filesystem flags
- */
-#define EXT2_FLAGS_SIGNED_HASH		0x0001  /* Signed dirhash in use */
-#define EXT2_FLAGS_UNSIGNED_HASH	0x0002  /* Unsigned dirhash in use */
-#define EXT2_FLAGS_TEST_FILESYS		0x0004	/* OK for use on development code */
-#define EXT2_FLAGS_IS_SNAPSHOT		0x0010	/* This is a snapshot image */
-#define EXT2_FLAGS_FIX_SNAPSHOT		0x0020	/* Snapshot inodes corrupted */
-#define EXT2_FLAGS_FIX_EXCLUDE		0x0040	/* Exclude bitmaps corrupted */
-
-/*
- * 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
-
-#if (__GNUC__ >= 4)
-#define ext4_offsetof(TYPE,MEMBER) __builtin_offsetof(TYPE,MEMBER)
-#else
-#define ext4_offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-#endif
-
-/*
- * Structure of the super block
- */
-struct ext2_super_block {
-	__u32	s_inodes_count;		/* Inodes count */
-	__u32	s_blocks_count;		/* Blocks count */
-	__u32	s_r_blocks_count;	/* Reserved blocks count */
-	__u32	s_free_blocks_count;	/* Free blocks count */
-	__u32	s_free_inodes_count;	/* Free inodes count */
-	__u32	s_first_data_block;	/* First Data Block */
-	__u32	s_log_block_size;	/* Block size */
-	__u32	s_log_cluster_size;	/* Allocation cluster size */
-	__u32	s_blocks_per_group;	/* # Blocks per group */
-	__u32	s_clusters_per_group;	/* # Fragments per group */
-	__u32	s_inodes_per_group;	/* # Inodes per group */
-	__u32	s_mtime;		/* Mount time */
-	__u32	s_wtime;		/* Write time */
-	__u16	s_mnt_count;		/* Mount count */
-	__s16	s_max_mnt_count;	/* Maximal mount count */
-	__u16	s_magic;		/* Magic signature */
-	__u16	s_state;		/* File system state */
-	__u16	s_errors;		/* Behaviour when detecting errors */
-	__u16	s_minor_rev_level;	/* minor revision level */
-	__u32	s_lastcheck;		/* time of last check */
-	__u32	s_checkinterval;	/* max. time between checks */
-	__u32	s_creator_os;		/* OS */
-	__u32	s_rev_level;		/* Revision level */
-	__u16	s_def_resuid;		/* Default uid for reserved blocks */
-	__u16	s_def_resgid;		/* Default gid for reserved blocks */
-	/*
-	 * These fields are for EXT2_DYNAMIC_REV superblocks only.
-	 *
-	 * Note: the difference between the compatible feature set and
-	 * the incompatible feature set is that if there is a bit set
-	 * in the incompatible feature set that the kernel doesn't
-	 * know about, it should refuse to mount the filesystem.
-	 *
-	 * e2fsck's requirements are more strict; if it doesn't know
-	 * about a feature in either the compatible or incompatible
-	 * feature set, it must abort and not try to meddle with
-	 * things it doesn't understand...
-	 */
-	__u32	s_first_ino;		/* First non-reserved inode */
-	__u16   s_inode_size;		/* size of inode structure */
-	__u16	s_block_group_nr;	/* block group # of this superblock */
-	__u32	s_feature_compat;	/* compatible feature set */
-	__u32	s_feature_incompat;	/* incompatible feature set */
-	__u32	s_feature_ro_compat;	/* readonly-compatible feature set */
-	__u8	s_uuid[16];		/* 128-bit uuid for volume */
-	char	s_volume_name[16];	/* volume name */
-	char	s_last_mounted[64];	/* directory where last mounted */
-	__u32	s_algorithm_usage_bitmap; /* For compression */
-	/*
-	 * Performance hints.  Directory preallocation should only
-	 * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
-	 */
-	__u8	s_prealloc_blocks;	/* Nr of blocks to try to preallocate*/
-	__u8	s_prealloc_dir_blocks;	/* Nr to preallocate for dirs */
-	__u16	s_reserved_gdt_blocks;	/* Per group table for online growth */
-	/*
-	 * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
-	 */
-	__u8	s_journal_uuid[16];	/* uuid of journal superblock */
-	__u32	s_journal_inum;		/* inode number of journal file */
-	__u32	s_journal_dev;		/* device number of journal file */
-	__u32	s_last_orphan;		/* start of list of inodes to delete */
-	__u32	s_hash_seed[4];		/* HTREE hash seed */
-	__u8	s_def_hash_version;	/* Default hash version to use */
-	__u8	s_jnl_backup_type; 	/* Default type of journal backup */
-	__u16	s_desc_size;		/* Group desc. size: INCOMPAT_64BIT */
-	__u32	s_default_mount_opts;
-	__u32	s_first_meta_bg;	/* First metablock group */
-	__u32	s_mkfs_time;		/* When the filesystem was created */
-	__u32	s_jnl_blocks[17]; 	/* Backup of the journal inode */
-	__u32	s_blocks_count_hi;	/* Blocks count high 32bits */
-	__u32	s_r_blocks_count_hi;	/* Reserved blocks count high 32 bits*/
-	__u32	s_free_blocks_hi; 	/* Free blocks count */
-	__u16	s_min_extra_isize;	/* All inodes have at least # bytes */
-	__u16	s_want_extra_isize; 	/* New inodes should reserve # bytes */
-	__u32	s_flags;		/* Miscellaneous flags */
-	__u16   s_raid_stride;		/* RAID stride */
-	__u16   s_mmp_update_interval;  /* # seconds to wait in MMP checking */
-	__u64   s_mmp_block;            /* Block for multi-mount protection */
-	__u32   s_raid_stripe_width;    /* blocks on all data disks (N*stride)*/
-	__u8	s_log_groups_per_flex;	/* FLEX_BG group size */
-	__u8    s_reserved_char_pad;
-	__u16	s_reserved_pad;		/* Padding to next 32bits */
-	__u64	s_kbytes_written;	/* nr of lifetime kilobytes written */
-	__u32	s_snapshot_inum;	/* Inode number of active snapshot */
-	__u32	s_snapshot_id;		/* sequential ID of active snapshot */
-	__u64	s_snapshot_r_blocks_count; /* reserved blocks for active
-					      snapshot's future use */
-	__u32	s_snapshot_list;	/* inode number of the head of the on-disk snapshot list */
-#define EXT4_S_ERR_START ext4_offsetof(struct ext2_super_block, s_error_count)
-	__u32	s_error_count;		/* number of fs errors */
-	__u32	s_first_error_time;	/* first time an error happened */
-	__u32	s_first_error_ino;	/* inode involved in first error */
-	__u64	s_first_error_block;	/* block involved of first error */
-	__u8	s_first_error_func[32];	/* function where the error happened */
-	__u32	s_first_error_line;	/* line number where error happened */
-	__u32	s_last_error_time;	/* most recent time of an error */
-	__u32	s_last_error_ino;	/* inode involved in last error */
-	__u32	s_last_error_line;	/* line number where error happened */
-	__u64	s_last_error_block;	/* block involved of last error */
-	__u8	s_last_error_func[32];	/* function where the error happened */
-#define EXT4_S_ERR_END ext4_offsetof(struct ext2_super_block, s_mount_opts)
-	__u8	s_mount_opts[64];
-	__u32	s_usr_quota_inum;	/* inode number of user quota file */
-	__u32	s_grp_quota_inum;	/* inode number of group quota file */
-	__u32	s_overhead_blocks;	/* overhead blocks/clusters in fs */
-	__u32   s_reserved[108];        /* Padding to the end of the block */
-	__u32	s_checksum;		/* crc32c(superblock) */
-};
-
-#define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
-
-/*
- * Codes for operating systems
- */
-#define EXT2_OS_LINUX		0
-#define EXT2_OS_HURD		1
-#define EXT2_OBSO_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_COMPAT_LAZY_BG		0x0040
-/* #define EXT2_FEATURE_COMPAT_EXCLUDE_INODE	0x0080 not used, legacy */
-#define EXT2_FEATURE_COMPAT_EXCLUDE_BITMAP	0x0100
-
-
-#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
-#define EXT4_FEATURE_RO_COMPAT_HAS_SNAPSHOT	0x0080
-#define EXT4_FEATURE_RO_COMPAT_QUOTA		0x0100
-#define EXT4_FEATURE_RO_COMPAT_BIGALLOC		0x0200
-#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM	0x0400
-#define EXT4_FEATURE_RO_COMPAT_REPLICA		0x0800
-
-#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 EXT4_FEATURE_INCOMPAT_64BIT		0x0080
-#define EXT4_FEATURE_INCOMPAT_MMP		0x0100
-#define EXT4_FEATURE_INCOMPAT_FLEX_BG		0x0200
-#define EXT4_FEATURE_INCOMPAT_EA_INODE		0x0400
-#define EXT4_FEATURE_INCOMPAT_DIRDATA		0x1000
-
-#define EXT2_FEATURE_COMPAT_SUPP	0
-#define EXT2_FEATURE_INCOMPAT_SUPP    (EXT2_FEATURE_INCOMPAT_FILETYPE| \
-				       EXT4_FEATURE_INCOMPAT_MMP)
-#define EXT2_FEATURE_RO_COMPAT_SUPP	(EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
-					 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
-					 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| \
-					 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
-#define EXT4_DEFM_NOBARRIER	0x0100
-#define EXT4_DEFM_BLOCK_VALIDITY 0x0200
-#define EXT4_DEFM_DISCARD	0x0400
-#define EXT4_DEFM_NODELALLOC	0x0800
-
-/*
- * Structure of a directory entry
- */
-#define EXT2_NAME_LEN 255
-
-struct ext2_dir_entry {
-	__u32	inode;			/* Inode number */
-	__u16	rec_len;		/* Directory entry length */
-	__u16	name_len;		/* Name length */
-	char	name[EXT2_NAME_LEN];	/* File name */
-};
-
-/*
- * The new version of the directory entry.  Since EXT2 structures are
- * stored in intel byte order, and the name_len field could never be
- * bigger than 255 chars, it's safe to reclaim the extra byte for the
- * file_type field.
- */
-struct ext2_dir_entry_2 {
-	__u32	inode;			/* Inode number */
-	__u16	rec_len;		/* Directory entry length */
-	__u8	name_len;		/* Name length */
-	__u8	file_type;
-	char	name[EXT2_NAME_LEN];	/* File name */
-};
-
-/*
- * Ext2 directory file types.  Only the low 3 bits are used.  The
- * other bits are reserved for now.
- */
-#define EXT2_FT_UNKNOWN		0
-#define EXT2_FT_REG_FILE	1
-#define EXT2_FT_DIR		2
-#define EXT2_FT_CHRDEV		3
-#define EXT2_FT_BLKDEV		4
-#define EXT2_FT_FIFO		5
-#define EXT2_FT_SOCK		6
-#define EXT2_FT_SYMLINK		7
-
-#define EXT2_FT_MAX		8
-
-/*
- * EXT2_DIR_PAD defines the directory entries boundaries
- *
- * NOTE: It must be a multiple of 4
- */
-#define EXT2_DIR_PAD			4
-#define EXT2_DIR_ROUND			(EXT2_DIR_PAD - 1)
-#define EXT2_DIR_REC_LEN(name_len)	(((name_len) + 8 + EXT2_DIR_ROUND) & \
-					 ~EXT2_DIR_ROUND)
-
-/*
- * This structure is used for multiple mount protection. It is written
- * into the block number saved in the s_mmp_block field in the superblock.
- * Programs that check MMP should assume that if SEQ_FSCK (or any unknown
- * code above SEQ_MAX) is present then it is NOT safe to use the filesystem,
- * regardless of how old the timestamp is.
- *
- * The timestamp in the MMP structure will be updated by e2fsck at some
- * arbitary intervals (start of passes, after every few groups of inodes
- * in pass1 and pass1b).  There is no guarantee that e2fsck is updating
- * the MMP block in a timely manner, and the updates it does are purely
- * for the convenience of the sysadmin and not for automatic validation.
- *
- * Note: Only the mmp_seq value is used to determine whether the MMP block
- *	is being updated.  The mmp_time, mmp_nodename, and mmp_bdevname
- *	fields are only for informational purposes for the administrator,
- *	due to clock skew between nodes and hostname HA service takeover.
- */
-#define EXT4_MMP_MAGIC     0x004D4D50U /* ASCII for MMP */
-#define EXT4_MMP_SEQ_CLEAN 0xFF4D4D50U /* mmp_seq value for clean unmount */
-#define EXT4_MMP_SEQ_FSCK  0xE24D4D50U /* mmp_seq value when being fscked */
-#define EXT4_MMP_SEQ_MAX   0xE24D4D4FU /* maximum valid mmp_seq value */
-
-struct mmp_struct {
-	__u32	mmp_magic;		/* Magic number for MMP */
-	__u32	mmp_seq;		/* Sequence no. updated periodically */
-	__u64	mmp_time;		/* Time last updated */
-	char	mmp_nodename[64];	/* Node which last updated MMP block */
-	char	mmp_bdevname[32];	/* Bdev which last updated MMP block */
-	__u16	mmp_check_interval;	/* Changed mmp_check_interval */
-	__u16	mmp_pad1;
-	__u32	mmp_pad2[227];
-};
-
-/*
- * Default interval for MMP update in seconds.
- */
-#define EXT4_MMP_UPDATE_INTERVAL	5
-
-/*
- * Maximum interval for MMP update in seconds.
- */
-#define EXT4_MMP_MAX_UPDATE_INTERVAL	300
-
-/*
- * Minimum interval for MMP checking in seconds.
- */
-#define EXT4_MMP_MIN_CHECK_INTERVAL     5
-
-#endif	/* _EXT2FS_EXT2_FS_H */
