mirror of
https://github.com/reactos/reactos.git
synced 2024-08-07 19:58:21 +00:00
Undo part of r42190. Sorry.
svn path=/trunk/; revision=42194
This commit is contained in:
Dmitry Gorbachev
parent
6e31a0dd00
commit
5687429f69
|
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@ -20,154 +20,613 @@
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#ifndef __EXT2_H
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#define __EXT2_H
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/*
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* grub/fs/ext2.c
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* linux/include/linux/ext3_fs.h
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*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2004,2005,2007 Free Software Foundation, Inc.
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* Copyright (C) 1992, 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* from
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* linux/include/linux/minix_fs.h
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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* Copyright (C) 1991, 1992 Linus Torvalds
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*/
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/* Magic value used to identify an ext2 filesystem. */
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#define EXT2_MAGIC 0xEF53
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/* Amount of indirect blocks in an inode. */
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#define INDIRECT_BLOCKS 12
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/* Maximum lenght of a pathname. */
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#define EXT2_PATH_MAX 4096
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/* Maximum nesting of symlinks, used to prevent a loop. */
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#define EXT2_MAX_SYMLINKCNT 8
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#ifndef _LINUX_EXT3_FS_H
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#define _LINUX_EXT3_FS_H
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/* The good old revision and the default inode size. */
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#define EXT2_GOOD_OLD_REVISION 0
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#define EXT2_GOOD_OLD_INODE_SIZE 128
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//#include <linux/types.h>
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/* Filetype used in directory entry. */
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#define FILETYPE_UNKNOWN 0
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#define FILETYPE_REG 1
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#define FILETYPE_DIRECTORY 2
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#define FILETYPE_SYMLINK 7
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/*
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* The second extended filesystem constants/structures
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*/
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/* Filetype information as used in inodes. */
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#define FILETYPE_INO_MASK 0170000
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#define FILETYPE_INO_REG 0100000
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#define FILETYPE_INO_DIRECTORY 0040000
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#define FILETYPE_INO_SYMLINK 0120000
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/*
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* Define EXT3FS_DEBUG to produce debug messages
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*/
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#undef EXT3FS_DEBUG
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/* The ext2 superblock. */
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struct ext2_sblock
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/*
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* Define EXT3_PREALLOCATE to preallocate data blocks for expanding files
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*/
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#undef EXT3_PREALLOCATE /* @@@ Fix this! */
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#define EXT3_DEFAULT_PREALLOC_BLOCKS 8
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/*
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* The second extended file system version
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*/
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#define EXT3FS_DATE "10 Jan 2002"
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#define EXT3FS_VERSION "2.4-0.9.17"
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/*
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* Debug code
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*/
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#ifdef EXT3FS_DEBUG
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#define ext3_debug(f, a...) \
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do { \
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printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:", \
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__FILE__, __LINE__, __FUNCTION__); \
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printk (KERN_DEBUG f, ## a); \
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} while (0)
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#else
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#ifdef __GNUC__
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#define ext3_debug(f, a...) do {} while (0)
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#else
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#define ext3_debug
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#endif
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#endif
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/*
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* Special inodes numbers
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*/
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#define EXT3_BAD_INO 1 /* Bad blocks inode */
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#define EXT3_ROOT_INO 2 /* Root inode */
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#define EXT3_ACL_IDX_INO 3 /* ACL inode */
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#define EXT3_ACL_DATA_INO 4 /* ACL inode */
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#define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */
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#define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */
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#define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */
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#define EXT3_JOURNAL_INO 8 /* Journal inode */
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/* First non-reserved inode for old ext3 filesystems */
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#define EXT3_GOOD_OLD_FIRST_INO 11
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/*
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* The second extended file system magic number
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*/
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#define EXT3_SUPER_MAGIC 0xEF53
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/*
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* Maximal count of links to a file
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*/
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#define EXT3_LINK_MAX 32000
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/*
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* Macro-instructions used to manage several block sizes
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*/
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#define EXT3_MIN_BLOCK_SIZE 1024
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#define EXT3_MAX_BLOCK_SIZE 4096
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#define EXT3_MIN_BLOCK_LOG_SIZE 10
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#ifdef __KERNEL__
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# define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize)
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#else
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# define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size)
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#endif
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#define EXT3_ACLE_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_acl_entry))
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#define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (ULONG))
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#ifdef __KERNEL__
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# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
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#else
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# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
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#endif
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#ifdef __KERNEL__
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#define EXT3_ADDR_PER_BLOCK_BITS(s) ((s)->u.ext3_sb.s_addr_per_block_bits)
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#define EXT3_INODE_SIZE(s) ((s)->u.ext3_sb.s_inode_size)
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#define EXT3_FIRST_INO(s) ((s)->u.ext3_sb.s_first_ino)
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#else
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#define EXT3_INODE_SIZE(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \
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EXT3_GOOD_OLD_INODE_SIZE : \
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(s)->s_inode_size)
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#define EXT3_FIRST_INO(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \
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EXT3_GOOD_OLD_FIRST_INO : \
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(s)->s_first_ino)
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#endif
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/*
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* Macro-instructions used to manage fragments
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*/
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#define EXT3_MIN_FRAG_SIZE 1024
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#define EXT3_MAX_FRAG_SIZE 4096
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#define EXT3_MIN_FRAG_LOG_SIZE 10
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#ifdef __KERNEL__
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# define EXT3_FRAG_SIZE(s) ((s)->u.ext3_sb.s_frag_size)
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# define EXT3_FRAGS_PER_BLOCK(s) ((s)->u.ext3_sb.s_frags_per_block)
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#else
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# define EXT3_FRAG_SIZE(s) (EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size)
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# define EXT3_FRAGS_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s))
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#endif
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/*
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* ACL structures
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*/
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struct ext3_acl_header /* Header of Access Control Lists */
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{
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ULONG total_inodes;
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ULONG total_blocks;
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ULONG reserved_blocks;
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ULONG free_blocks;
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ULONG free_inodes;
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ULONG first_data_block;
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ULONG log2_block_size;
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ULONG log2_fragment_size;
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ULONG blocks_per_group;
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ULONG fragments_per_group;
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ULONG inodes_per_group;
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ULONG mtime;
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ULONG utime;
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USHORT mnt_count;
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USHORT max_mnt_count;
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USHORT magic;
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USHORT fs_state;
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USHORT error_handling;
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USHORT minor_revision_level;
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ULONG lastcheck;
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ULONG checkinterval;
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ULONG creator_os;
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ULONG revision_level;
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USHORT uid_reserved;
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USHORT gid_reserved;
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ULONG first_inode;
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USHORT inode_size;
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USHORT block_group_number;
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ULONG feature_compatibility;
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ULONG feature_incompat;
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ULONG feature_ro_compat;
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ULONG unique_id[4];
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char volume_name[16];
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char last_mounted_on[64];
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ULONG compression_info;
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ULONG aclh_size;
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ULONG aclh_file_count;
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ULONG aclh_acle_count;
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ULONG aclh_first_acle;
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};
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/* The ext2 blockgroup. */
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struct ext2_block_group
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struct ext3_acl_entry /* Access Control List Entry */
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{
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ULONG block_id;
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ULONG inode_id;
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ULONG inode_table_id;
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USHORT free_blocks;
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USHORT free_inodes;
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USHORT used_dirs;
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USHORT pad;
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ULONG reserved[3];
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};
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/* The ext2 inode. */
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struct ext2_inode
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{
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USHORT mode;
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USHORT uid;
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ULONG size;
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ULONG atime;
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ULONG ctime;
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ULONG mtime;
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ULONG dtime;
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USHORT gid;
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USHORT nlinks;
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ULONG blockcnt; /* Blocks of 512 bytes!! */
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ULONG flags;
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ULONG osd1;
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union
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{
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struct datablocks
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{
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ULONG dir_blocks[INDIRECT_BLOCKS];
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ULONG indir_block;
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ULONG double_indir_block;
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ULONG tripple_indir_block;
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} blocks;
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char symlink[60];
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};
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ULONG version;
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ULONG acl;
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ULONG dir_acl;
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ULONG fragment_addr;
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ULONG osd2[3];
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};
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/* The header of an ext2 directory entry. */
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struct ext2_dirent
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{
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ULONG inode;
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USHORT direntlen;
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UCHAR namelen;
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UCHAR filetype;
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ULONG acle_size;
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USHORT acle_perms; /* Access permissions */
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USHORT acle_type; /* Type of entry */
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USHORT acle_tag; /* User or group identity */
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USHORT acle_pad1;
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ULONG acle_next; /* Pointer on next entry for the */
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/* same inode or on next free entry */
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};
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/*
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* End of code from grub/fs/ext2.c
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* Structure of a blocks group descriptor
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*/
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struct ext3_group_desc
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{
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ULONG bg_block_bitmap; /* Blocks bitmap block */
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ULONG bg_inode_bitmap; /* Inodes bitmap block */
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ULONG bg_inode_table; /* Inodes table block */
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USHORT bg_free_blocks_count; /* Free blocks count */
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USHORT bg_free_inodes_count; /* Free inodes count */
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USHORT bg_used_dirs_count; /* Directories count */
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USHORT bg_pad;
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ULONG bg_reserved[3];
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};
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/*
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* Macro-instructions used to manage group descriptors
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*/
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#ifdef __KERNEL__
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# define EXT3_BLOCKS_PER_GROUP(s) ((s)->u.ext3_sb.s_blocks_per_group)
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# define EXT3_DESC_PER_BLOCK(s) ((s)->u.ext3_sb.s_desc_per_block)
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# define EXT3_INODES_PER_GROUP(s) ((s)->u.ext3_sb.s_inodes_per_group)
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# define EXT3_DESC_PER_BLOCK_BITS(s) ((s)->u.ext3_sb.s_desc_per_block_bits)
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#else
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# define EXT3_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
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# define EXT3_DESC_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc))
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# define EXT3_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
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#endif
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/*
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* Constants relative to the data blocks
|
||||
*/
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#define EXT3_NDIR_BLOCKS 12
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#define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS
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#define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1)
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#define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1)
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#define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1)
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|
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/*
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* Inode flags
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*/
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#define EXT3_SECRM_FL 0x00000001 /* Secure deletion */
|
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#define EXT3_UNRM_FL 0x00000002 /* Undelete */
|
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#define EXT3_COMPR_FL 0x00000004 /* Compress file */
|
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#define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */
|
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#define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */
|
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#define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */
|
||||
#define EXT3_NODUMP_FL 0x00000040 /* do not dump file */
|
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#define EXT3_NOATIME_FL 0x00000080 /* do not update atime */
|
||||
/* Reserved for compression usage... */
|
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#define EXT3_DIRTY_FL 0x00000100
|
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#define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
|
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#define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */
|
||||
#define EXT3_ECOMPR_FL 0x00000800 /* Compression error */
|
||||
/* End compression flags --- maybe not all used */
|
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#define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */
|
||||
#define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */
|
||||
#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
|
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#define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */
|
||||
|
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#define EXT3_FL_USER_VISIBLE 0x00005FFF /* User visible flags */
|
||||
#define EXT3_FL_USER_MODIFIABLE 0x000000FF /* User modifiable flags */
|
||||
|
||||
/*
|
||||
* Inode dynamic state flags
|
||||
*/
|
||||
#define EXT3_STATE_JDATA 0x00000001 /* journaled data exists */
|
||||
#define EXT3_STATE_NEW 0x00000002 /* inode is newly created */
|
||||
|
||||
/*
|
||||
* ioctl commands
|
||||
*/
|
||||
#define EXT3_IOC_GETFLAGS _IOR('f', 1, long)
|
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#define EXT3_IOC_SETFLAGS _IOW('f', 2, long)
|
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#define EXT3_IOC_GETVERSION _IOR('f', 3, long)
|
||||
#define EXT3_IOC_SETVERSION _IOW('f', 4, long)
|
||||
#define EXT3_IOC_GETVERSION_OLD _IOR('v', 1, long)
|
||||
#define EXT3_IOC_SETVERSION_OLD _IOW('v', 2, long)
|
||||
#ifdef CONFIG_JBD_DEBUG
|
||||
#define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long)
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Structure of an inode on the disk
|
||||
*/
|
||||
struct ext3_inode {
|
||||
USHORT i_mode; /* File mode */
|
||||
USHORT i_uid; /* Low 16 bits of Owner Uid */
|
||||
ULONG i_size; /* Size in bytes */
|
||||
ULONG i_atime; /* Access time */
|
||||
ULONG i_ctime; /* Creation time */
|
||||
ULONG i_mtime; /* Modification time */
|
||||
ULONG i_dtime; /* Deletion Time */
|
||||
USHORT i_gid; /* Low 16 bits of Group Id */
|
||||
USHORT i_links_count; /* Links count */
|
||||
ULONG i_blocks; /* Blocks count */
|
||||
ULONG i_flags; /* File flags */
|
||||
union {
|
||||
struct {
|
||||
ULONG l_i_reserved1;
|
||||
} linux1;
|
||||
struct {
|
||||
ULONG h_i_translator;
|
||||
} hurd1;
|
||||
struct {
|
||||
ULONG m_i_reserved1;
|
||||
} masix1;
|
||||
} osd1; /* OS dependent 1 */
|
||||
ULONG i_block[EXT3_N_BLOCKS];/* Pointers to blocks */
|
||||
ULONG i_generation; /* File version (for NFS) */
|
||||
ULONG i_file_acl; /* File ACL */
|
||||
ULONG i_dir_acl; /* Directory ACL */
|
||||
ULONG i_faddr; /* Fragment address */
|
||||
union {
|
||||
struct {
|
||||
UCHAR l_i_frag; /* Fragment number */
|
||||
UCHAR l_i_fsize; /* Fragment size */
|
||||
USHORT i_pad1;
|
||||
USHORT l_i_uid_high; /* these 2 fields */
|
||||
USHORT l_i_gid_high; /* were reserved2[0] */
|
||||
ULONG l_i_reserved2;
|
||||
} linux2;
|
||||
struct {
|
||||
UCHAR h_i_frag; /* Fragment number */
|
||||
UCHAR h_i_fsize; /* Fragment size */
|
||||
USHORT h_i_mode_high;
|
||||
USHORT h_i_uid_high;
|
||||
USHORT h_i_gid_high;
|
||||
ULONG h_i_author;
|
||||
} hurd2;
|
||||
struct {
|
||||
UCHAR m_i_frag; /* Fragment number */
|
||||
UCHAR m_i_fsize; /* Fragment size */
|
||||
USHORT m_pad1;
|
||||
ULONG 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_uid_low i_uid
|
||||
#define i_gid_low i_gid
|
||||
#define i_uid_high osd2.linux2.l_i_uid_high
|
||||
#define i_gid_high osd2.linux2.l_i_gid_high
|
||||
#define i_reserved2 osd2.linux2.l_i_reserved2
|
||||
|
||||
#elif 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
|
||||
|
||||
#elif defined(__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 /* defined(__KERNEL__) || defined(__linux__) */
|
||||
|
||||
/*
|
||||
* File system states
|
||||
*/
|
||||
#define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */
|
||||
#define EXT3_ERROR_FS 0x0002 /* Errors detected */
|
||||
#define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */
|
||||
|
||||
/*
|
||||
* Mount flags
|
||||
*/
|
||||
#define EXT3_MOUNT_CHECK 0x0001 /* Do mount-time checks */
|
||||
#define EXT3_MOUNT_GRPID 0x0004 /* Create files with directory's group */
|
||||
#define EXT3_MOUNT_DEBUG 0x0008 /* Some debugging messages */
|
||||
#define EXT3_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */
|
||||
#define EXT3_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */
|
||||
#define EXT3_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */
|
||||
#define EXT3_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */
|
||||
#define EXT3_MOUNT_NOLOAD 0x0100 /* Don't use existing journal*/
|
||||
#define EXT3_MOUNT_ABORT 0x0200 /* Fatal error detected */
|
||||
#define EXT3_MOUNT_DATA_FLAGS 0x0C00 /* Mode for data writes: */
|
||||
#define EXT3_MOUNT_JOURNAL_DATA 0x0400 /* Write data to journal */
|
||||
#define EXT3_MOUNT_ORDERED_DATA 0x0800 /* Flush data before commit */
|
||||
#define EXT3_MOUNT_WRITEBACK_DATA 0x0C00 /* No data ordering */
|
||||
#define EXT3_MOUNT_UPDATE_JOURNAL 0x1000 /* Update the journal format */
|
||||
#define EXT3_MOUNT_NO_UID32 0x2000 /* Disable 32-bit UIDs */
|
||||
|
||||
/* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
|
||||
#ifndef _LINUX_EXT2_FS_H
|
||||
#define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt
|
||||
#define set_opt(o, opt) o |= EXT3_MOUNT_##opt
|
||||
#define test_opt(sb, opt) ((sb)->u.ext3_sb.s_mount_opt & \
|
||||
EXT3_MOUNT_##opt)
|
||||
#else
|
||||
#define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD
|
||||
#define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT
|
||||
#endif
|
||||
|
||||
#define ext3_set_bit ext2_set_bit
|
||||
#define ext3_clear_bit ext2_clear_bit
|
||||
#define ext3_test_bit ext2_test_bit
|
||||
#define ext3_find_first_zero_bit ext2_find_first_zero_bit
|
||||
#define ext3_find_next_zero_bit ext2_find_next_zero_bit
|
||||
|
||||
/*
|
||||
* Maximal mount counts between two filesystem checks
|
||||
*/
|
||||
#define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
|
||||
#define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */
|
||||
|
||||
/*
|
||||
* Behaviour when detecting errors
|
||||
*/
|
||||
#define EXT3_ERRORS_CONTINUE 1 /* Continue execution */
|
||||
#define EXT3_ERRORS_RO 2 /* Remount fs read-only */
|
||||
#define EXT3_ERRORS_PANIC 3 /* Panic */
|
||||
#define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE
|
||||
|
||||
/*
|
||||
* Structure of the super block
|
||||
*/
|
||||
struct ext3_super_block {
|
||||
/*00*/ ULONG s_inodes_count; /* Inodes count */
|
||||
ULONG s_blocks_count; /* Blocks count */
|
||||
ULONG s_r_blocks_count; /* Reserved blocks count */
|
||||
ULONG s_free_blocks_count; /* Free blocks count */
|
||||
/*10*/ ULONG s_free_inodes_count; /* Free inodes count */
|
||||
ULONG s_first_data_block; /* First Data Block */
|
||||
ULONG s_log_block_size; /* Block size */
|
||||
LONG s_log_frag_size; /* Fragment size */
|
||||
/*20*/ ULONG s_blocks_per_group; /* # Blocks per group */
|
||||
ULONG s_frags_per_group; /* # Fragments per group */
|
||||
ULONG s_inodes_per_group; /* # Inodes per group */
|
||||
ULONG s_mtime; /* Mount time */
|
||||
/*30*/ ULONG s_wtime; /* Write time */
|
||||
USHORT s_mnt_count; /* Mount count */
|
||||
SHORT s_max_mnt_count; /* Maximal mount count */
|
||||
USHORT s_magic; /* Magic signature */
|
||||
USHORT s_state; /* File system state */
|
||||
USHORT s_errors; /* Behaviour when detecting errors */
|
||||
USHORT s_minor_rev_level; /* minor revision level */
|
||||
/*40*/ ULONG s_lastcheck; /* time of last check */
|
||||
ULONG s_checkinterval; /* max. time between checks */
|
||||
ULONG s_creator_os; /* OS */
|
||||
ULONG s_rev_level; /* Revision level */
|
||||
/*50*/ USHORT s_def_resuid; /* Default uid for reserved blocks */
|
||||
USHORT s_def_resgid; /* Default gid for reserved blocks */
|
||||
/*
|
||||
* These fields are for EXT3_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...
|
||||
*/
|
||||
ULONG s_first_ino; /* First non-reserved inode */
|
||||
USHORT s_inode_size; /* size of inode structure */
|
||||
USHORT s_block_group_nr; /* block group # of this superblock */
|
||||
ULONG s_feature_compat; /* compatible feature set */
|
||||
/*60*/ ULONG s_feature_incompat; /* incompatible feature set */
|
||||
ULONG s_feature_ro_compat; /* readonly-compatible feature set */
|
||||
/*68*/ UCHAR s_uuid[16]; /* 128-bit uuid for volume */
|
||||
/*78*/ char s_volume_name[16]; /* volume name */
|
||||
/*88*/ char s_last_mounted[64]; /* directory where last mounted */
|
||||
/*C8*/ ULONG s_algorithm_usage_bitmap; /* For compression */
|
||||
/*
|
||||
* Performance hints. Directory preallocation should only
|
||||
* happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on.
|
||||
*/
|
||||
UCHAR s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
|
||||
UCHAR s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
|
||||
USHORT s_padding1;
|
||||
/*
|
||||
* Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set.
|
||||
*/
|
||||
/*D0*/ UCHAR s_journal_uuid[16]; /* uuid of journal superblock */
|
||||
/*E0*/ ULONG s_journal_inum; /* inode number of journal file */
|
||||
ULONG s_journal_dev; /* device number of journal file */
|
||||
ULONG s_last_orphan; /* start of list of inodes to delete */
|
||||
|
||||
/*EC*/ ULONG s_reserved[197]; /* Padding to the end of the block */
|
||||
};
|
||||
|
||||
#ifdef __KERNEL__
|
||||
#define EXT3_SB(sb) (&((sb)->u.ext3_sb))
|
||||
#define EXT3_I(inode) (&((inode)->u.ext3_i))
|
||||
#else
|
||||
/* Assume that user mode programs are passing in an ext3fs superblock, not
|
||||
* a kernel struct super_block. This will allow us to call the feature-test
|
||||
* macros from user land. */
|
||||
#define EXT3_SB(sb) (sb)
|
||||
#endif
|
||||
|
||||
#define NEXT_ORPHAN(inode) (inode)->u.ext3_i.i_dtime
|
||||
|
||||
/*
|
||||
* Codes for operating systems
|
||||
*/
|
||||
#define EXT3_OS_LINUX 0
|
||||
#define EXT3_OS_HURD 1
|
||||
#define EXT3_OS_MASIX 2
|
||||
#define EXT3_OS_FREEBSD 3
|
||||
#define EXT3_OS_LITES 4
|
||||
|
||||
/*
|
||||
* Revision levels
|
||||
*/
|
||||
#define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */
|
||||
#define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
|
||||
|
||||
#define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV
|
||||
#define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV
|
||||
|
||||
#define EXT3_GOOD_OLD_INODE_SIZE 128
|
||||
|
||||
/*
|
||||
* Feature set definitions
|
||||
*/
|
||||
|
||||
typedef struct ext2_sblock EXT2_SUPER_BLOCK, *PEXT2_SUPER_BLOCK;
|
||||
typedef struct ext2_inode EXT2_INODE, *PEXT2_INODE;
|
||||
typedef struct ext2_block_group EXT2_GROUP_DESC, *PEXT2_GROUP_DESC;
|
||||
typedef struct ext2_dirent EXT2_DIR_ENTRY, *PEXT2_DIR_ENTRY;
|
||||
#define EXT3_HAS_COMPAT_FEATURE(sb,mask) \
|
||||
( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
|
||||
#define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \
|
||||
( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
|
||||
#define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \
|
||||
( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
|
||||
#define EXT3_SET_COMPAT_FEATURE(sb,mask) \
|
||||
EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
|
||||
#define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \
|
||||
EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
|
||||
#define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \
|
||||
EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
|
||||
#define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \
|
||||
EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
|
||||
#define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \
|
||||
EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
|
||||
#define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \
|
||||
EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask)
|
||||
|
||||
#define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001
|
||||
#define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002
|
||||
#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
|
||||
#define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008
|
||||
#define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010
|
||||
#define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020
|
||||
|
||||
#define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
|
||||
#define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
|
||||
#define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
|
||||
|
||||
#define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001
|
||||
#define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002
|
||||
#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
|
||||
#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
|
||||
|
||||
#define EXT3_FEATURE_COMPAT_SUPP 0
|
||||
/*#define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \
|
||||
EXT3_FEATURE_INCOMPAT_RECOVER)*/
|
||||
#define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE)
|
||||
#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \
|
||||
EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \
|
||||
EXT3_FEATURE_RO_COMPAT_BTREE_DIR)
|
||||
|
||||
/*
|
||||
* Default values for user and/or group using reserved blocks
|
||||
*/
|
||||
#define EXT3_DEF_RESUID 0
|
||||
#define EXT3_DEF_RESGID 0
|
||||
|
||||
/*
|
||||
* Structure of a directory entry
|
||||
*/
|
||||
#define EXT3_NAME_LEN 255
|
||||
|
||||
struct ext3_dir_entry {
|
||||
ULONG inode; /* Inode number */
|
||||
USHORT rec_len; /* Directory entry length */
|
||||
USHORT name_len; /* Name length */
|
||||
CHAR name[EXT3_NAME_LEN]; /* File name */
|
||||
};
|
||||
|
||||
/*
|
||||
* The new version of the directory entry. Since EXT3 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 ext3_dir_entry_2 {
|
||||
ULONG inode; /* Inode number */
|
||||
USHORT rec_len; /* Directory entry length */
|
||||
UCHAR name_len; /* Name length */
|
||||
UCHAR file_type;
|
||||
CHAR name[EXT3_NAME_LEN]; /* File name */
|
||||
};
|
||||
|
||||
/*
|
||||
* Ext3 directory file types. Only the low 3 bits are used. The
|
||||
* other bits are reserved for now.
|
||||
*/
|
||||
#define EXT3_FT_UNKNOWN 0
|
||||
#define EXT3_FT_REG_FILE 1
|
||||
#define EXT3_FT_DIR 2
|
||||
#define EXT3_FT_CHRDEV 3
|
||||
#define EXT3_FT_BLKDEV 4
|
||||
#define EXT3_FT_FIFO 5
|
||||
#define EXT3_FT_SOCK 6
|
||||
#define EXT3_FT_SYMLINK 7
|
||||
|
||||
#define EXT3_FT_MAX 8
|
||||
|
||||
/*
|
||||
* EXT3_DIR_PAD defines the directory entries boundaries
|
||||
*
|
||||
* NOTE: It must be a multiple of 4
|
||||
*/
|
||||
#define EXT3_DIR_PAD 4
|
||||
#define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1)
|
||||
#define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \
|
||||
~EXT3_DIR_ROUND)
|
||||
|
||||
#ifdef __KERNEL__
|
||||
/*
|
||||
* Describe an inode's exact location on disk and in memory
|
||||
*/
|
||||
struct ext3_iloc
|
||||
{
|
||||
struct buffer_head *bh;
|
||||
struct ext3_inode *raw_inode;
|
||||
unsigned long block_group;
|
||||
};
|
||||
|
||||
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* _LINUX_EXT3_FS_H */
|
||||
|
||||
|
||||
|
||||
typedef struct ext3_super_block EXT2_SUPER_BLOCK, *PEXT2_SUPER_BLOCK;
|
||||
typedef struct ext3_inode EXT2_INODE, *PEXT2_INODE;
|
||||
typedef struct ext3_group_desc EXT2_GROUP_DESC, *PEXT2_GROUP_DESC;
|
||||
typedef struct ext3_dir_entry_2 EXT2_DIR_ENTRY, *PEXT2_DIR_ENTRY;
|
||||
|
||||
// EXT2_INODE::i_mode values
|
||||
#define EXT2_S_IRWXO 0x0007 // Other mask
|
||||
|
|
@ -202,21 +661,23 @@ typedef struct ext2_dirent EXT2_DIR_ENTRY, *PEXT2_DIR_ENTRY;
|
|||
|
||||
typedef struct
|
||||
{
|
||||
ULONGLONG FileSize; // File size
|
||||
ULONGLONG FilePointer; // File pointer
|
||||
ULONGLONG FileSize; // File size
|
||||
ULONGLONG FilePointer; // File pointer
|
||||
ULONG* FileBlockList; // File block list
|
||||
UCHAR DriveNumber; // Drive number of open file
|
||||
EXT2_INODE Inode; // File's inode
|
||||
UCHAR DriveNumber; // Drive number of open file
|
||||
EXT2_INODE Inode; // File's inode
|
||||
} EXT2_FILE_INFO, * PEXT2_FILE_INFO;
|
||||
|
||||
|
||||
|
||||
BOOLEAN Ext2OpenVolume(UCHAR DriveNumber, ULONGLONG VolumeStartSector, ULONGLONG PartitionSectorCount);
|
||||
FILE* Ext2OpenFile(PCSTR FileName);
|
||||
BOOLEAN Ext2LookupFile(PCSTR FileName, PEXT2_FILE_INFO Ext2FileInfoPointer);
|
||||
BOOLEAN Ext2SearchDirectoryBufferForFile(PVOID DirectoryBuffer, ULONG DirectorySize, PCHAR FileName, PEXT2_DIR_ENTRY DirectoryEntry);
|
||||
BOOLEAN Ext2ReadFile(FILE *FileHandle, ULONG BytesToRead, ULONG* BytesRead, PVOID Buffer);
|
||||
ULONG Ext2GetFileSize(FILE *FileHandle);
|
||||
ULONG Ext2GetFileSize(FILE *FileHandle);
|
||||
VOID Ext2SetFilePointer(FILE *FileHandle, ULONG NewFilePointer);
|
||||
ULONG Ext2GetFilePointer(FILE *FileHandle);
|
||||
ULONG Ext2GetFilePointer(FILE *FileHandle);
|
||||
BOOLEAN Ext2ReadVolumeSectors(UCHAR DriveNumber, ULONGLONG SectorNumber, ULONGLONG SectorCount, PVOID Buffer);
|
||||
|
||||
BOOLEAN Ext2ReadFileBig(FILE *FileHandle, ULONGLONG BytesToRead, ULONGLONG* BytesRead, PVOID Buffer);
|
||||
|
|
@ -225,15 +686,15 @@ BOOLEAN Ext2ReadGroupDescriptors(VOID);
|
|||
BOOLEAN Ext2ReadDirectory(ULONG Inode, PVOID* DirectoryBuffer, PEXT2_INODE InodePointer);
|
||||
BOOLEAN Ext2ReadBlock(ULONG BlockNumber, PVOID Buffer);
|
||||
BOOLEAN Ext2ReadPartialBlock(ULONG BlockNumber, ULONG StartingOffset, ULONG Length, PVOID Buffer);
|
||||
ULONG Ext2GetGroupDescBlockNumber(ULONG Group);
|
||||
ULONG Ext2GetGroupDescOffsetInBlock(ULONG Group);
|
||||
ULONG Ext2GetInodeGroupNumber(ULONG Inode);
|
||||
ULONG Ext2GetInodeBlockNumber(ULONG Inode);
|
||||
ULONG Ext2GetInodeOffsetInBlock(ULONG Inode);
|
||||
ULONG Ext2GetGroupDescBlockNumber(ULONG Group);
|
||||
ULONG Ext2GetGroupDescOffsetInBlock(ULONG Group);
|
||||
ULONG Ext2GetInodeGroupNumber(ULONG Inode);
|
||||
ULONG Ext2GetInodeBlockNumber(ULONG Inode);
|
||||
ULONG Ext2GetInodeOffsetInBlock(ULONG Inode);
|
||||
BOOLEAN Ext2ReadInode(ULONG Inode, PEXT2_INODE InodeBuffer);
|
||||
BOOLEAN Ext2ReadGroupDescriptor(ULONG Group, PEXT2_GROUP_DESC GroupBuffer);
|
||||
ULONG* Ext2ReadBlockPointerList(PEXT2_INODE Inode);
|
||||
ULONGLONG Ext2GetInodeFileSize(PEXT2_INODE Inode);
|
||||
ULONGLONG Ext2GetInodeFileSize(PEXT2_INODE Inode);
|
||||
BOOLEAN Ext2CopyIndirectBlockPointers(ULONG* BlockList, ULONG* CurrentBlockInList, ULONG BlockCount, ULONG IndirectBlock);
|
||||
BOOLEAN Ext2CopyDoubleIndirectBlockPointers(ULONG* BlockList, ULONG* CurrentBlockInList, ULONG BlockCount, ULONG DoubleIndirectBlock);
|
||||
BOOLEAN Ext2CopyTripleIndirectBlockPointers(ULONG* BlockList, ULONG* CurrentBlockInList, ULONG BlockCount, ULONG TripleIndirectBlock);
|
||||
|
|
|
|||
Loading…
Reference in a new issue