text: /*-
   *  modified for EXT2FS support in Lites 1.1
   *
   *  Aug 1995, Godmar Back (gback@cs.utah.edu)
   *  University of Utah, Department of Computer Science
   *
   * $FreeBSD: src/sys/gnu/fs/ext2fs/ext2_fs.h,v 1.15 2005/06/16 06:51:38 imp Exp $
   */
  /*-
   *  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
   *
   *      This program is free software; you can redistribute it and/or modify
   *      it under the terms of the GNU General Public License as published by
   *      the Free Software Foundation; either version 2 of the License.
   *
   *      This program is distributed in the hope that it will be useful,
   *      but WITHOUT ANY WARRANTY; without even the implied warranty of
   *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *      GNU General Public License for more details.
   *
   *      You should have received a copy of the GNU General Public License
   *      along with this program; if not, write to the Free Software
   *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   *
   */
  
  #ifndef _LINUX_EXT2_FS_H
  #define _LINUX_EXT2_FS_H
  
  #include <sys/types.h>
  
  #define __u32 u_int32_t
  #define u32   u_int32_t
  #define __u16 u_int16_t
  #define __u8  u_int8_t
  
  #define __s32 int32_t
  #define __s16 int16_t
  #define __s8  int8_t
  
  #define umode_t mode_t
  #define loff_t  off_t
  
  /*
   * 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"
  
  /*
   * Debug code
   */
  #ifdef EXT2FS_DEBUG
  #	define ext2_debug(f, a...)	{ \
  					printf ("EXT2-fs DEBUG (%s, %d): %s:", \
  						__FILE__, __LINE__, __func__); \
  				  	printf (f, ## a); \
  					}
  #else
  #	define ext2_debug(f, a...)	/**/
  #endif
  
  /*
   * Special inodes 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 */
  
  /* 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
  
  /*
   * Maximal count of links to a file
   */
  #define EXT2_LINK_MAX		32000
  
  /*
   * Note: under FreeBSD, the "user" versions of the following macros are
   * used (and must be used) in most cases, because ((s)->u.ext2_sb.s_es is
   * not accessible.  This depends on __KERNEL__ not being defined for
   * kernel builds under FreeBSD.
   */
  
  /*
   * Macro-instructions used to manage several block sizes
   */
  #define EXT2_MIN_BLOCK_SIZE		1024
  #define	EXT2_MAX_BLOCK_SIZE		4096
  #define EXT2_MIN_BLOCK_LOG_SIZE		  10
  #if defined(__KERNEL__) || (defined(__FreeBSD__) && defined(_KERNEL))
  # define EXT2_BLOCK_SIZE(s)		((s)->s_blocksize)
  #else
  # define EXT2_BLOCK_SIZE(s)		(EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
  #endif
  #define EXT2_ACLE_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_acl_entry))
  #define	EXT2_ADDR_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (__u32))
  #ifdef __KERNEL__
  # define EXT2_BLOCK_SIZE_BITS(s)	((s)->s_blocksize_bits)
  #else
  # define EXT2_BLOCK_SIZE_BITS(s)	((s)->s_log_block_size + 10)
  #endif
  #ifdef notyet
  #ifdef __KERNEL__
  #define	EXT2_ADDR_PER_BLOCK_BITS(s)	((s)->u.ext2_sb.s_addr_per_block_bits)
  #define EXT2_INODE_SIZE(s)		((s)->u.ext2_sb.s_inode_size)
  #define EXT2_FIRST_INO(s)		((s)->u.ext2_sb.s_first_ino)
  #else
  #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
  #else /* !notyet */
  #define	EXT2_INODES_PER_BLOCK(s)	((s)->s_inodes_per_block)
  /* Should be sizeof(struct ext2_inode): */
  #define EXT2_INODE_SIZE			128
  #define EXT2_FIRST_INO			11
  #endif /* notyet */
  
  /*
   * Macro-instructions used to manage fragments
   */
  #define EXT2_MIN_FRAG_SIZE		1024
  #define	EXT2_MAX_FRAG_SIZE		4096
  #define EXT2_MIN_FRAG_LOG_SIZE		  10
  #ifdef __KERNEL__
  # define EXT2_FRAG_SIZE(s)		((s)->u.ext2_sb.s_frag_size)
  # define EXT2_FRAGS_PER_BLOCK(s)	((s)->u.ext2_sb.s_frags_per_block)
  #else
  # if defined(_KERNEL) && defined(__FreeBSD__)
  # define EXT2_FRAG_SIZE(s)		((s)->s_frag_size)
  # else
  # define EXT2_FRAG_SIZE(s)		(EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
  # endif
  # define EXT2_FRAGS_PER_BLOCK(s)	(EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
  #endif
  
  /*
   * ACL structures
   */
  struct ext2_acl_header	/* Header of Access Control Lists */
  {
  	__u32	aclh_size;
  	__u32	aclh_file_count;
  	__u32	aclh_acle_count;
  	__u32	aclh_first_acle;
  };
  
  struct ext2_acl_entry	/* Access Control List Entry */
  {
  	__u32	acle_size;
  	__u16	acle_perms;	/* Access permissions */
  	__u16	acle_type;	/* Type of entry */
  	__u16	acle_tag;	/* User or group identity */
  	__u16	acle_pad1;
  	__u32	acle_next;	/* Pointer on next entry for the */
  					/* same inode or on next free entry */
  };
  
  /*
   * Structure of a blocks group descriptor
   */
  struct ext2_group_desc
  {
  	__u32	bg_block_bitmap;		/* Blocks bitmap block */
  	__u32	bg_inode_bitmap;		/* Inodes bitmap block */
  	__u32	bg_inode_table;		/* Inodes table block */
  	__u16	bg_free_blocks_count;	/* Free blocks count */
  	__u16	bg_free_inodes_count;	/* Free inodes count */
  	__u16	bg_used_dirs_count;	/* Directories count */
  	__u16	bg_pad;
  	__u32	bg_reserved[3];
  };
  
  /*
   * Macro-instructions used to manage group descriptors
   */
  #ifdef __KERNEL__
  # define EXT2_BLOCKS_PER_GROUP(s)	((s)->u.ext2_sb.s_blocks_per_group)
  # define EXT2_DESC_PER_BLOCK(s)		((s)->u.ext2_sb.s_desc_per_block)
  # define EXT2_INODES_PER_GROUP(s)	((s)->u.ext2_sb.s_inodes_per_group)
  # define EXT2_DESC_PER_BLOCK_BITS(s)	((s)->u.ext2_sb.s_desc_per_block_bits)
  #else
  # define EXT2_BLOCKS_PER_GROUP(s)	((s)->s_blocks_per_group)
  # define EXT2_DESC_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
  # define EXT2_INODES_PER_GROUP(s)	((s)->s_inodes_per_group)
  #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)
  #define EXT2_MAXSYMLINKLEN		(EXT2_N_BLOCKS * sizeof (__u32))
  
  /*
   * 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_NOCOMP_FL			0x00000400 /* Don't compress */
  #define EXT2_ECOMPR_FL			0x00000800 /* Compression error */
  /* End compression flags --- maybe not all used */	
  #define EXT2_BTREE_FL			0x00001000 /* btree format dir */
  #define EXT2_RESERVED_FL		0x80000000 /* reserved for ext2 lib */
  
  #define EXT2_FL_USER_VISIBLE		0x00001FFF /* User visible flags */
  #define EXT2_FL_USER_MODIFIABLE		0x000000FF /* User modifiable flags */
  
  /*
   * ioctl commands
   */
  #define	EXT2_IOC_GETFLAGS		_IOR('f', 1, long)
  #define	EXT2_IOC_SETFLAGS		_IOW('f', 2, long)
  #define	EXT2_IOC_GETVERSION		_IOR('v', 1, long)
  #define	EXT2_IOC_SETVERSION		_IOW('v', 2, long)
  
  /*
   * Structure of an inode on the disk
   */
  struct ext2_inode {
  	__u16	i_mode;		/* File mode */
  	__u16	i_uid;		/* Owner Uid */
  	__u32	i_size;		/* Size in bytes */
  	__u32	i_atime;	/* Access time */
  	__u32	i_ctime;	/* Creation time */
  	__u32	i_mtime;	/* Modification time */
  	__u32	i_dtime;	/* Deletion Time */
  	__u16	i_gid;		/* Group Id */
  	__u16	i_links_count;	/* Links count */
  	__u32	i_blocks;	/* Blocks count */
  	__u32	i_flags;	/* File flags */
  	union {
  		struct {
  			__u32  l_i_reserved1;
  		} linux1;
  		struct {
  			__u32  h_i_translator;
  		} hurd1;
  		struct {
  			__u32  m_i_reserved1;
  		} masix1;
  	} osd1;				/* OS dependent 1 */
  	__u32	i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
  	__u32	i_generation;	/* File version (for NFS) */
  	__u32	i_file_acl;	/* File ACL */
  	__u32	i_dir_acl;	/* Directory ACL */
  	__u32	i_faddr;	/* Fragment address */
  	union {
  		struct {
  			__u8	l_i_frag;	/* Fragment number */
  			__u8	l_i_fsize;	/* Fragment size */
  			__u16	i_pad1;
  			__u32	l_i_reserved2[2];
  		} linux2;
  		struct {
  			__u8	h_i_frag;	/* Fragment number */
  			__u8	h_i_fsize;	/* Fragment size */
  			__u16	h_i_mode_high;
  			__u16	h_i_uid_high;
  			__u16	h_i_gid_high;
  			__u32	h_i_author;
  		} hurd2;
  		struct {
  			__u8	m_i_frag;	/* Fragment number */
  			__u8	m_i_fsize;	/* Fragment size */
  			__u16	m_pad1;
  			__u32	m_i_reserved2[2];
  		} masix2;
  	} osd2;				/* OS dependent 2 */
  };
  
  #define i_size_high	i_dir_acl
  
  #if defined(__KERNEL__) || defined(__linux__)
  #define i_reserved1	osd1.linux1.l_i_reserved1
  #define i_frag		osd2.linux2.l_i_frag
  #define i_fsize		osd2.linux2.l_i_fsize
  #define i_reserved2	osd2.linux2.l_i_reserved2
  #endif
  
  #ifdef	__hurd__
  #define i_translator	osd1.hurd1.h_i_translator
  #define i_frag		osd2.hurd2.h_i_frag;
  #define i_fsize		osd2.hurd2.h_i_fsize;
  #define i_uid_high	osd2.hurd2.h_i_uid_high
  #define i_gid_high	osd2.hurd2.h_i_gid_high
  #define i_author	osd2.hurd2.h_i_author
  #endif
  
  #ifdef	__masix__
  #define i_reserved1	osd1.masix1.m_i_reserved1
  #define i_frag		osd2.masix2.m_i_frag
  #define i_fsize		osd2.masix2.m_i_fsize
  #define i_reserved2	osd2.masix2.m_i_reserved2
  #endif
  
  /*
   * File system states
   */
  #define	EXT2_VALID_FS			0x0001	/* Unmounted cleanly */
  #define	EXT2_ERROR_FS			0x0002	/* Errors detected */
  
  /*
   * Mount flags
   */
  #define EXT2_MOUNT_CHECK_NORMAL		0x0001	/* Do some more checks */
  #define EXT2_MOUNT_CHECK_STRICT		0x0002	/* Do again more checks */
  #define EXT2_MOUNT_CHECK		(EXT2_MOUNT_CHECK_NORMAL | \
  					 EXT2_MOUNT_CHECK_STRICT)
  #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 clear_opt(o, opt)		o &= ~EXT2_MOUNT_##opt
  #define set_opt(o, opt)			o |= EXT2_MOUNT_##opt
  #define test_opt(sb, opt)		((sb)->u.ext2_sb.s_mount_opt & \
  					 EXT2_MOUNT_##opt)
  /*
   * Maximal mount counts between two filesystem checks
   */
  #define EXT2_DFL_MAX_MNT_COUNT		20	/* Allow 20 mounts */
  #define EXT2_DFL_CHECKINTERVAL		0	/* Don't use interval check */
  
  /*
   * Behaviour when detecting errors
   */
  #define EXT2_ERRORS_CONTINUE		1	/* Continue execution */
  #define EXT2_ERRORS_RO			2	/* Remount fs read-only */
  #define EXT2_ERRORS_PANIC		3	/* Panic */
  #define EXT2_ERRORS_DEFAULT		EXT2_ERRORS_CONTINUE
  
  /*
   * Structure of the super block
   */
  struct ext2_super_block {
  	__u32	s_inodes_count;		/* Inodes count */
  	__u32	s_blocks_count;		/* Blocks count */
  	__u32	s_r_blocks_count;	/* Reserved blocks count */
  	__u32	s_free_blocks_count;	/* Free blocks count */
  	__u32	s_free_inodes_count;	/* Free inodes count */
  	__u32	s_first_data_block;	/* First Data Block */
  	__u32	s_log_block_size;	/* Block size */
  	__s32	s_log_frag_size;	/* Fragment size */
  	__u32	s_blocks_per_group;	/* # Blocks per group */
  	__u32	s_frags_per_group;	/* # Fragments per group */
  	__u32	s_inodes_per_group;	/* # Inodes per group */
  	__u32	s_mtime;		/* Mount time */
  	__u32	s_wtime;		/* Write time */
  	__u16	s_mnt_count;		/* Mount count */
  	__s16	s_max_mnt_count;	/* Maximal mount count */
  	__u16	s_magic;		/* Magic signature */
  	__u16	s_state;		/* File system state */
  	__u16	s_errors;		/* Behaviour when detecting errors */
  	__u16	s_minor_rev_level; 	/* minor revision level */
  	__u32	s_lastcheck;		/* time of last check */
  	__u32	s_checkinterval;	/* max. time between checks */
  	__u32	s_creator_os;		/* OS */
  	__u32	s_rev_level;		/* Revision level */
  	__u16	s_def_resuid;		/* Default uid for reserved blocks */
  	__u16	s_def_resgid;		/* Default gid for reserved blocks */
  	/*
  	 * These fields are for EXT2_DYNAMIC_REV superblocks only.
  	 *
  	 * Note: the difference between the compatible feature set and
  	 * the incompatible feature set is that if there is a bit set
  	 * in the incompatible feature set that the kernel doesn't
  	 * know about, it should refuse to mount the filesystem.
  	 * 
  	 * e2fsck's requirements are more strict; if it doesn't know
  	 * about a feature in either the compatible or incompatible
  	 * feature set, it must abort and not try to meddle with
  	 * things it doesn't understand...
  	 */
  	__u32	s_first_ino; 		/* First non-reserved inode */
  	__u16   s_inode_size; 		/* size of inode structure */
  	__u16	s_block_group_nr; 	/* block group # of this superblock */
  	__u32	s_feature_compat; 	/* compatible feature set */
  	__u32	s_feature_incompat; 	/* incompatible feature set */
  	__u32	s_feature_ro_compat; 	/* readonly-compatible feature set */
  	__u8	s_uuid[16];		/* 128-bit uuid for volume */
  	char	s_volume_name[16]; 	/* volume name */
  	char	s_last_mounted[64]; 	/* directory where last mounted */
  	__u32	s_algorithm_usage_bitmap; /* For compression */
  	/*
  	 * Performance hints.  Directory preallocation should only
  	 * happen if the EXT2_COMPAT_PREALLOC flag is on.
  	 */
  	__u8	s_prealloc_blocks;	/* Nr of blocks to try to preallocate*/
  	__u8	s_prealloc_dir_blocks;	/* Nr to preallocate for dirs */
  	__u16	s_padding1;
  	__u32	s_reserved[204];	/* Padding to the end of the block */
  };
  
  #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
  
  /*
   * Codes for operating systems
   */
  #define EXT2_OS_LINUX		0
  #define EXT2_OS_HURD		1
  #define EXT2_OS_MASIX		2
  #define EXT2_OS_FREEBSD		3
  #define EXT2_OS_LITES		4
  
  /*
   * Revision levels
   */
  #define EXT2_GOOD_OLD_REV	0	/* The good old (original) format */
  #define EXT2_DYNAMIC_REV	1 	/* V2 format w/ dynamic inode sizes */
  
  #define EXT2_CURRENT_REV	EXT2_GOOD_OLD_REV
  #define EXT2_MAX_SUPP_REV	EXT2_DYNAMIC_REV
  
  #define EXT2_GOOD_OLD_INODE_SIZE 128
  
  /*
   * Feature set definitions
   */
  
  #define EXT2_HAS_COMPAT_FEATURE(sb,mask)			\
  	( EXT2_SB(sb)->s_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_RO_COMPAT_SPARSE_SUPER	0x0001
  #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE	0x0002
  #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR	0x0004
  
  #define EXT2_FEATURE_INCOMPAT_COMPRESSION	0x0001
  #define EXT2_FEATURE_INCOMPAT_FILETYPE		0x0002
  
  #define EXT2_FEATURE_COMPAT_SUPP	0
  #define EXT2_FEATURE_INCOMPAT_SUPP	EXT2_FEATURE_INCOMPAT_FILETYPE
  #ifdef notyet
  #define EXT2_FEATURE_RO_COMPAT_SUPP	(EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
  					 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
  					 EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
  #else
  #define EXT2_FEATURE_RO_COMPAT_SUPP	(EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
  					 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
  #endif
  
  /*
   * Default values for user and/or group using reserved blocks
   */
  #define	EXT2_DEF_RESUID		0
  #define	EXT2_DEF_RESGID		0
  
  /*
   * Structure of a directory entry
   */
  #define EXT2_NAME_LEN 255
  
  struct ext2_dir_entry {
  	__u32	inode;			/* Inode number */
  	__u16	rec_len;		/* Directory entry length */
  	__u16	name_len;		/* Name length */
  	char	name[EXT2_NAME_LEN];	/* File name */
  };
  
  /*
   * The new version of the directory entry.  Since EXT2 structures are
   * stored in intel byte order, and the name_len field could never be
   * bigger than 255 chars, it's safe to reclaim the extra byte for the
   * file_type field.
   */
  struct ext2_dir_entry_2 {
  	__u32	inode;			/* Inode number */
  	__u16	rec_len;		/* Directory entry length */
  	__u8	name_len;		/* Name length */
  	__u8	file_type;
  	char	name[EXT2_NAME_LEN];	/* File name */
  };
  
  /*
   * Ext2 directory file types.  Only the low 3 bits are used.  The
   * other bits are reserved for now.
   */
  #define EXT2_FT_UNKNOWN		0
  #define EXT2_FT_REG_FILE	1
  #define EXT2_FT_DIR		2
  #define EXT2_FT_CHRDEV		3
  #define EXT2_FT_BLKDEV 		4
  #define EXT2_FT_FIFO		5
  #define EXT2_FT_SOCK		6
  #define EXT2_FT_SYMLINK		7
  
  #define EXT2_FT_MAX		8
  
  /*
   * EXT2_DIR_PAD defines the directory entries boundaries
   *
   * NOTE: It must be a multiple of 4
   */
  #define EXT2_DIR_PAD		 	4
  #define EXT2_DIR_ROUND 			(EXT2_DIR_PAD - 1)
  #define EXT2_DIR_REC_LEN(name_len)	(((name_len) + 8 + EXT2_DIR_ROUND) & \
  					 ~EXT2_DIR_ROUND)
  
  #endif	/* _LINUX_EXT2_FS_H */
  