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* ext2fs.h --- ext2fs

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* %Begin-Header%

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* This file may be redistributed under the terms of the GNU Library

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* General Public License, version 2.

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* %End-Header%

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#ifndef _EXT2FS_EXT2FS_H

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#define _EXT2FS_EXT2FS_H

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#ifdef __GNUC__

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#define EXT2FS_ATTR(x) __attribute__(x)

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#else

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#define EXT2FS_ATTR(x)

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#endif

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#ifdef CONFIG_TDB

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#define EXT2FS_NO_TDB_UNUSED

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#else

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#define EXT2FS_NO_TDB_UNUSED EXT2FS_ATTR((unused))

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#endif

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#ifdef __cplusplus

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extern "C" {

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#endif

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* Non-GNU C compilers won't necessarily understand inline

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#if (!defined(__GNUC__) && !defined(__WATCOMC__))

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#define NO_INLINE_FUNCS

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#endif

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* Where the master copy of the superblock is located, and how big

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* superblocks are supposed to be. We define SUPERBLOCK_SIZE because

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* the size of the superblock structure is not necessarily trustworthy

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* (some versions have the padding set up so that the superblock is

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* 1032 bytes long).

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#define SUPERBLOCK_OFFSET 1024

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#define SUPERBLOCK_SIZE 1024

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#define UUID_STR_SIZE 37

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* The last ext2fs revision level that this version of the library is

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* able to support.

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#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV

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#ifdef HAVE_SYS_TYPES_H

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#include <sys/types.h>

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#endif

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#include <stdio.h>

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#include <stdlib.h>

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#include <string.h>

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#include <time.h>

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#include <errno.h>

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#if EXT2_FLAT_INCLUDES

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#include "e2_types.h"

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#include "ext2_fs.h"

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#include "ext3_extents.h"

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#else

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#include <ext2fs/ext2_types.h>

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#include <ext2fs/ext2_fs.h>

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#include <ext2fs/ext3_extents.h>

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#endif /* EXT2_FLAT_INCLUDES */

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typedef __u32 __bitwise ext2_ino_t;

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typedef __u32 __bitwise blk_t;

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typedef __u64 __bitwise blk64_t;

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typedef __u32 __bitwise dgrp_t;

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typedef __s32 __bitwise ext2_off_t;

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typedef __s64 __bitwise ext2_off64_t;

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typedef __s64 __bitwise e2_blkcnt_t;

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typedef __u32 __bitwise ext2_dirhash_t;

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#if EXT2_FLAT_INCLUDES

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#include "com_err.h"

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#include "ext2_io.h"

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#include "ext2_err.h"

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#include "ext2_ext_attr.h"

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#else

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#include <et/com_err.h>

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#include <ext2fs/ext2_io.h>

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#include <ext2fs/ext2_err.h>

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#include <ext2fs/ext2_ext_attr.h>

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#endif

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#include "hashmap.h"

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* Portability help for Microsoft Visual C++

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#ifdef _MSC_VER

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#define EXT2_QSORT_TYPE int __cdecl

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#else

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#define EXT2_QSORT_TYPE int

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#endif

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typedef struct struct_ext2_filsys *ext2_filsys;

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#define EXT2FS_MARK_ERROR 0

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#define EXT2FS_UNMARK_ERROR 1

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#define EXT2FS_TEST_ERROR 2

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typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;

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typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;

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typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;

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#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)

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* Badblocks list definitions

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typedef struct ext2_struct_u32_list *ext2_badblocks_list;

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typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;

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typedef struct ext2_struct_u32_list *ext2_u32_list;

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typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;

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/* old */

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typedef struct ext2_struct_u32_list *badblocks_list;

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typedef struct ext2_struct_u32_iterate *badblocks_iterate;

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#define BADBLOCKS_FLAG_DIRTY 1

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* ext2_dblist structure and abstractions (see dblist.c)

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struct ext2_db_entry2 {

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ext2_ino_t ino;

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blk64_t blk;

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e2_blkcnt_t blockcnt;

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};

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/* Ye Olde 32-bit version */

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struct ext2_db_entry {

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ext2_ino_t ino;

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blk_t blk;

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int blockcnt;

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};

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typedef struct ext2_struct_dblist *ext2_dblist;

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#define DBLIST_ABORT 1

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* ext2_fileio definitions

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#define EXT2_FILE_WRITE 0x0001

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#define EXT2_FILE_CREATE 0x0002

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#define EXT2_FILE_MASK 0x00FF

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#define EXT2_FILE_BUF_DIRTY 0x4000

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#define EXT2_FILE_BUF_VALID 0x2000

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typedef struct ext2_file *ext2_file_t;

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#define EXT2_SEEK_SET 0

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#define EXT2_SEEK_CUR 1

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#define EXT2_SEEK_END 2

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* Flags for the ext2_filsys structure and for ext2fs_open()

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#define EXT2_FLAG_RW 0x01

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#define EXT2_FLAG_CHANGED 0x02

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#define EXT2_FLAG_DIRTY 0x04

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#define EXT2_FLAG_VALID 0x08

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#define EXT2_FLAG_IB_DIRTY 0x10

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#define EXT2_FLAG_BB_DIRTY 0x20

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#define EXT2_FLAG_SWAP_BYTES 0x40

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#define EXT2_FLAG_SWAP_BYTES_READ 0x80

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#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100

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#define EXT2_FLAG_MASTER_SB_ONLY 0x200

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#define EXT2_FLAG_FORCE 0x400

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#define EXT2_FLAG_SUPER_ONLY 0x800

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#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000

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#define EXT2_FLAG_IMAGE_FILE 0x2000

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#define EXT2_FLAG_EXCLUSIVE 0x4000

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#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000

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#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000

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#define EXT2_FLAG_64BITS 0x20000

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#define EXT2_FLAG_PRINT_PROGRESS 0x40000

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#define EXT2_FLAG_DIRECT_IO 0x80000

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#define EXT2_FLAG_SKIP_MMP 0x100000

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#define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000

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#define EXT2_FLAG_SHARE_DUP 0x400000

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#define EXT2_FLAG_IGNORE_SB_ERRORS 0x800000

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#define EXT2_FLAG_BBITMAP_TAIL_PROBLEM 0x1000000

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#define EXT2_FLAG_IBITMAP_TAIL_PROBLEM 0x2000000

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* Special flag in the ext2 inode i_flag field that means that this is

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* a new inode. (So that ext2_write_inode() can clear extra fields.)

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#define EXT2_NEW_INODE_FL 0x80000000

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* Flags for mkjournal

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#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */

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#define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/

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#define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */

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struct blk_alloc_ctx;

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struct opaque_ext2_group_desc;

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struct struct_ext2_filsys {

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errcode_t magic;

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io_channel io;

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int flags;

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char * device_name;

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struct ext2_super_block * super;

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unsigned int blocksize;

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int fragsize;

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dgrp_t group_desc_count;

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unsigned long desc_blocks;

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struct opaque_ext2_group_desc * group_desc;

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unsigned int inode_blocks_per_group;

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ext2fs_inode_bitmap inode_map;

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ext2fs_block_bitmap block_map;

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/* XXX FIXME-64: not 64-bit safe, but not used? */

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errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);

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errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);

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errcode_t (*write_bitmaps)(ext2_filsys fs);

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errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,

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struct ext2_inode *inode);

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errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,

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struct ext2_inode *inode);

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ext2_badblocks_list badblocks;

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ext2_dblist dblist;

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__u32 stride; /* for mke2fs */

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struct ext2_super_block * orig_super;

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struct ext2_image_hdr * image_header;

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__u32 umask;

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time_t now;

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int cluster_ratio_bits;

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__u16 default_bitmap_type;

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__u16 pad;

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* RedHat specific change to prevent ABI change by using 8

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* reserved bytes

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const struct ext2fs_nls_table *encoding;

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* Reserved for future expansion

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__u32 reserved[5 - (sizeof(long int)/4)];

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* Reserved for the use of the calling application.

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void * priv_data;

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* Inode cache

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struct ext2_inode_cache *icache;

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io_channel image_io;

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* More callback functions

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errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,

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blk64_t *ret);

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errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,

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blk64_t *ret, struct blk_alloc_ctx *ctx);

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void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);

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* Buffers for Multiple mount protection(MMP) block.

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void *mmp_buf;

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void *mmp_cmp;

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int mmp_fd;

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* Time at which e2fsck last updated the MMP block.

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long mmp_last_written;

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/* progress operation functions */

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struct ext2fs_progress_ops *progress_ops;

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/* Precomputed FS UUID checksum for seeding other checksums */

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__u32 csum_seed;

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io_channel journal_io;

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char *journal_name;

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/* New block range allocation hooks */

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errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,

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blk64_t len, blk64_t *pblk, blk64_t *plen);

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void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,

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int inuse);

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/* hashmap for SHA of data blocks */

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struct ext2fs_hashmap* block_sha_map;

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};

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#if EXT2_FLAT_INCLUDES

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#include "e2_bitops.h"

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#else

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#include <ext2fs/bitops.h>

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#endif

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* 64-bit bitmap backend types

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#define EXT2FS_BMAP64_BITARRAY 1

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#define EXT2FS_BMAP64_RBTREE 2

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#define EXT2FS_BMAP64_AUTODIR 3

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* Return flags for the block iterator functions

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#define BLOCK_CHANGED 1

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#define BLOCK_ABORT 2

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#define BLOCK_ERROR 4

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#define BLOCK_INLINE_DATA_CHANGED 8

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* Block interate flags

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* BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator

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* function should be called on blocks where the block number is zero.

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* This is used by ext2fs_expand_dir() to be able to add a new block

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* to an inode. It can also be used for programs that want to be able

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* to deal with files that contain "holes".

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* BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for

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* the indirect, doubly indirect, etc. blocks should be called after

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* all of the blocks contained in the indirect blocks are processed.

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* This is useful if you are going to be deallocating blocks from an

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* inode.

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* BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be

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* called for data blocks only.

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* BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not

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* modify returned block number.

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* BLOCK_FLAG_NO_LARGE is for internal use only. It informs

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* ext2fs_block_iterate2 that large files won't be accepted.

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#define BLOCK_FLAG_APPEND 1

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#define BLOCK_FLAG_HOLE 1

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#define BLOCK_FLAG_DEPTH_TRAVERSE 2

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#define BLOCK_FLAG_DATA_ONLY 4

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#define BLOCK_FLAG_READ_ONLY 8

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#define BLOCK_FLAG_NO_LARGE 0x1000

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* Magic "block count" return values for the block iterator function.

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#define BLOCK_COUNT_IND (-1)

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#define BLOCK_COUNT_DIND (-2)

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#define BLOCK_COUNT_TIND (-3)

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#define BLOCK_COUNT_TRANSLATOR (-4)

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#define BLOCK_ALLOC_UNKNOWN 0

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#define BLOCK_ALLOC_DATA 1

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#define BLOCK_ALLOC_METADATA 2

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struct blk_alloc_ctx {

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ext2_ino_t ino;

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struct ext2_inode *inode;

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blk64_t lblk;

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int flags;

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};

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#if 0

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* Flags for ext2fs_move_blocks

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#define EXT2_BMOVE_GET_DBLIST 0x0001

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#define EXT2_BMOVE_DEBUG 0x0002

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#endif

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* Generic (non-filesystem layout specific) extents structure

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#define EXT2_EXTENT_FLAGS_LEAF 0x0001

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#define EXT2_EXTENT_FLAGS_UNINIT 0x0002

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#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004

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struct ext2fs_extent {

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blk64_t e_pblk; /* first physical block */

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blk64_t e_lblk; /* first logical block extent covers */

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__u32 e_len; /* number of blocks covered by extent */

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__u32 e_flags; /* extent flags */

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};

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typedef struct ext2_extent_handle *ext2_extent_handle_t;

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typedef struct ext2_extent_path *ext2_extent_path_t;

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* Flags used by ext2fs_extent_get()

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#define EXT2_EXTENT_CURRENT 0x0000

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#define EXT2_EXTENT_MOVE_MASK 0x000F

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#define EXT2_EXTENT_ROOT 0x0001

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#define EXT2_EXTENT_LAST_LEAF 0x0002

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#define EXT2_EXTENT_FIRST_SIB 0x0003

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#define EXT2_EXTENT_LAST_SIB 0x0004

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#define EXT2_EXTENT_NEXT_SIB 0x0005

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#define EXT2_EXTENT_PREV_SIB 0x0006

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#define EXT2_EXTENT_NEXT_LEAF 0x0007

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#define EXT2_EXTENT_PREV_LEAF 0x0008

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#define EXT2_EXTENT_NEXT 0x0009

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#define EXT2_EXTENT_PREV 0x000A

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#define EXT2_EXTENT_UP 0x000B

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#define EXT2_EXTENT_DOWN 0x000C

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#define EXT2_EXTENT_DOWN_AND_LAST 0x000D

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* Flags used by ext2fs_extent_insert()

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#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */

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#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */

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* Flags used by ext2fs_extent_delete()

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#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */

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* Flags used by ext2fs_extent_set_bmap()

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#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001

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* Data structure returned by ext2fs_extent_get_info()

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struct ext2_extent_info {

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int curr_entry;

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int curr_level;

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int num_entries;

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int max_entries;

[455] Fix | Delete

int max_depth;

[456] Fix | Delete

int bytes_avail;

[457] Fix | Delete

blk64_t max_lblk;

[458] Fix | Delete

blk64_t max_pblk;

[459] Fix | Delete

__u32 max_len;

[460] Fix | Delete

__u32 max_uninit_len;

[461] Fix | Delete

};

[462] Fix | Delete

[463] Fix | Delete

[464] Fix | Delete

* Flags for directory block reading and writing functions

[465] Fix | Delete

[466] Fix | Delete

#define EXT2_DIRBLOCK_V2_STRUCT 0x0001

[467] Fix | Delete

[468] Fix | Delete

[469] Fix | Delete

* Return flags for the directory iterator functions

[470] Fix | Delete

[471] Fix | Delete

#define DIRENT_CHANGED 1

[472] Fix | Delete

#define DIRENT_ABORT 2

[473] Fix | Delete

#define DIRENT_ERROR 3

[474] Fix | Delete

[475] Fix | Delete

[476] Fix | Delete

* Directory iterator flags

[477] Fix | Delete

[478] Fix | Delete

[479] Fix | Delete

#define DIRENT_FLAG_INCLUDE_EMPTY 1

[480] Fix | Delete

#define DIRENT_FLAG_INCLUDE_REMOVED 2

[481] Fix | Delete

#define DIRENT_FLAG_INCLUDE_CSUM 4

[482] Fix | Delete

#define DIRENT_FLAG_INCLUDE_INLINE_DATA 8

[483] Fix | Delete

[484] Fix | Delete

#define DIRENT_DOT_FILE 1

[485] Fix | Delete

#define DIRENT_DOT_DOT_FILE 2

[486] Fix | Delete

#define DIRENT_OTHER_FILE 3

[487] Fix | Delete

#define DIRENT_DELETED_FILE 4

[488] Fix | Delete

#define DIRENT_CHECKSUM 5

[489] Fix | Delete

[490] Fix | Delete

[491] Fix | Delete

* Inode scan definitions

[492] Fix | Delete

[493] Fix | Delete

typedef struct ext2_struct_inode_scan *ext2_inode_scan;

[494] Fix | Delete

[495] Fix | Delete

[496] Fix | Delete

* ext2fs_scan flags

[497] Fix | Delete

[498] Fix | Delete

#define EXT2_SF_CHK_BADBLOCKS 0x0001

[499] Fix | Delete

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