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/* vi: set sw=4 ts=4: */
* ext2fs.h --- ext2fs
* Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
#ifndef EXT2FS_EXT2FS_H
#define EXT2FS_EXT2FS_H 1
#define EXT2FS_ATTR(x)
#ifdef __cplusplus
extern "C" {
* Where the master copy of the superblock is located, and how big
* superblocks are supposed to be. We define SUPERBLOCK_SIZE because
* the size of the superblock structure is not necessarily trustworthy
* (some versions have the padding set up so that the superblock is
* 1032 bytes long).
#define SUPERBLOCK_SIZE 1024
* The last ext2fs revision level that this version of the library is
* able to support.
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include "ext2_types.h"
#include "ext2_fs.h"
typedef __u32 ext2_ino_t;
typedef __u32 blk_t;
typedef __u32 dgrp_t;
typedef __u32 ext2_off_t;
typedef __s64 e2_blkcnt_t;
typedef __u32 ext2_dirhash_t;
#include "ext2_io.h"
#include "ext2_err.h"
typedef struct struct_ext2_filsys *ext2_filsys;
struct ext2fs_struct_generic_bitmap {
errcode_t magic;
ext2_filsys fs;
__u32 start, end;
__u32 real_end;
char * description;
char * bitmap;
errcode_t base_error_code;
__u32 reserved[7];
typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
* badblocks list definitions
typedef struct ext2_struct_u32_list *ext2_badblocks_list;
typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
typedef struct ext2_struct_u32_list *ext2_u32_list;
typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
/* old */
typedef struct ext2_struct_u32_list *badblocks_list;
typedef struct ext2_struct_u32_iterate *badblocks_iterate;
* ext2_dblist structure and abstractions (see dblist.c)
struct ext2_db_entry {
ext2_ino_t ino;
blk_t blk;
int blockcnt;
typedef struct ext2_struct_dblist *ext2_dblist;
#define DBLIST_ABORT 1
* ext2_fileio definitions
#define EXT2_FILE_WRITE 0x0001
#define EXT2_FILE_CREATE 0x0002
#define EXT2_FILE_MASK 0x00FF
#define EXT2_FILE_BUF_DIRTY 0x4000
#define EXT2_FILE_BUF_VALID 0x2000
typedef struct ext2_file *ext2_file_t;
#define EXT2_SEEK_SET 0
#define EXT2_SEEK_CUR 1
#define EXT2_SEEK_END 2
* Flags for the ext2_filsys structure and for ext2fs_open()
#define EXT2_FLAG_RW 0x01
#define EXT2_FLAG_CHANGED 0x02
#define EXT2_FLAG_DIRTY 0x04
#define EXT2_FLAG_VALID 0x08
#define EXT2_FLAG_IB_DIRTY 0x10
#define EXT2_FLAG_BB_DIRTY 0x20
#define EXT2_FLAG_SWAP_BYTES 0x40
#define EXT2_FLAG_MASTER_SB_ONLY 0x200
#define EXT2_FLAG_FORCE 0x400
#define EXT2_FLAG_SUPER_ONLY 0x800
#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
#define EXT2_FLAG_IMAGE_FILE 0x2000
* Special flag in the ext2 inode i_flag field that means that this is
* a new inode. (So that ext2_write_inode() can clear extra fields.)
#define EXT2_NEW_INODE_FL 0x80000000
* Flags for mkjournal
* EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
#define EXT2_MKJOURNAL_V1_SUPER 0x0000001
struct struct_ext2_filsys {
errcode_t magic;
io_channel io;
int flags;
char * device_name;
struct ext2_super_block * super;
unsigned int blocksize;
int fragsize;
dgrp_t group_desc_count;
unsigned long desc_blocks;
struct ext2_group_desc * group_desc;
int inode_blocks_per_group;
ext2fs_inode_bitmap inode_map;
ext2fs_block_bitmap block_map;
errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
errcode_t (*write_bitmaps)(ext2_filsys fs);
errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode);
errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode);
ext2_badblocks_list badblocks;
ext2_dblist dblist;
__u32 stride; /* for mke2fs */
struct ext2_super_block * orig_super;
struct ext2_image_hdr * image_header;
__u32 umask;
* Reserved for future expansion
__u32 reserved[8];
* Reserved for the use of the calling application.
void * priv_data;
* Inode cache
struct ext2_inode_cache *icache;
io_channel image_io;
#include "bitops.h"
* Return flags for the block iterator functions
#define BLOCK_ABORT 2
#define BLOCK_ERROR 4
* Block interate flags
* BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
* function should be called on blocks where the block number is zero.
* This is used by ext2fs_expand_dir() to be able to add a new block
* to an inode. It can also be used for programs that want to be able
* to deal with files that contain "holes".
* BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
* indirect, doubly indirect, etc. blocks should be called after all
* of the blocks containined in the indirect blocks are processed.
* This is useful if you are going to be deallocating blocks from an
* inode.
* BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
* called for data blocks only.
* BLOCK_FLAG_NO_LARGE is for internal use only. It informs
* ext2fs_block_iterate2 that large files won't be accepted.
#define BLOCK_FLAG_NO_LARGE 0x1000
* Magic "block count" return values for the block iterator function.
#define BLOCK_COUNT_IND (-1)
#define BLOCK_COUNT_DIND (-2)
#define BLOCK_COUNT_TIND (-3)
#if 0
* Flags for ext2fs_move_blocks
#define EXT2_BMOVE_GET_DBLIST 0x0001
#define EXT2_BMOVE_DEBUG 0x0002
* Flags for directory block reading and writing functions
#define EXT2_DIRBLOCK_V2_STRUCT 0x0001
* Return flags for the directory iterator functions
#define DIRENT_ABORT 2
#define DIRENT_ERROR 3
* Directory iterator flags
* Inode scan definitions
typedef struct ext2_struct_inode_scan *ext2_inode_scan;
* ext2fs_scan flags
#define EXT2_SF_CHK_BADBLOCKS 0x0001
#define EXT2_SF_BAD_INODE_BLK 0x0002
#define EXT2_SF_BAD_EXTRA_BYTES 0x0004
* ext2fs_check_if_mounted flags
#define EXT2_MF_MOUNTED 1
#define EXT2_MF_ISROOT 2
#define EXT2_MF_READONLY 4
#define EXT2_MF_SWAP 8
#define EXT2_MF_BUSY 16
* Ext2/linux mode flags. We define them here so that we don't need
* to depend on the OS's sys/stat.h, since we may be compiling on a
* non-Linux system.
#define LINUX_S_IFMT 00170000
#define LINUX_S_IFSOCK 0140000
#define LINUX_S_IFLNK 0120000
#define LINUX_S_IFREG 0100000
#define LINUX_S_IFBLK 0060000
#define LINUX_S_IFDIR 0040000
#define LINUX_S_IFCHR 0020000
#define LINUX_S_IFIFO 0010000
#define LINUX_S_ISUID 0004000
#define LINUX_S_ISGID 0002000
#define LINUX_S_ISVTX 0001000
#define LINUX_S_IRWXU 00700
#define LINUX_S_IRUSR 00400
#define LINUX_S_IWUSR 00200
#define LINUX_S_IXUSR 00100
#define LINUX_S_IRWXG 00070
#define LINUX_S_IRGRP 00040
#define LINUX_S_IWGRP 00020
#define LINUX_S_IXGRP 00010
#define LINUX_S_IRWXO 00007
#define LINUX_S_IROTH 00004
#define LINUX_S_IWOTH 00002
#define LINUX_S_IXOTH 00001
#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
* ext2 size of an inode
#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
* ext2_icount_t abstraction
typedef struct ext2_icount *ext2_icount_t;
* Flags for ext2fs_bmap
#define BMAP_ALLOC 0x0001
#define BMAP_SET 0x0002
* Flags for imager.c functions
* For checking structure magic numbers...
#define EXT2_CHECK_MAGIC(struct, code) \
if ((struct)->magic != (code)) return (code)
* For ext2 compression support
#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
* Features supported by this version of the library
/* This #ifdef is temporary until compression is fully supported */
/* If the below warning bugs you, then have
environment at configure time. */
#warning "Compression support is experimental"
* function prototypes
/* alloc.c */
extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
ext2fs_inode_bitmap map, ext2_ino_t *ret);
extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
ext2fs_block_bitmap map, blk_t *ret);
extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
blk_t finish, int num,
ext2fs_block_bitmap map,
blk_t *ret);
extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
char *block_buf, blk_t *ret);
/* alloc_sb.c */
extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
dgrp_t group,
ext2fs_block_bitmap bmap);
/* alloc_stats.c */
void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
int inuse, int isdir);
void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
/* alloc_tables.c */
extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
ext2fs_block_bitmap bmap);
/* badblocks.c */
extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
ext2_u32_iterate *ret);
extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
int size);
extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
blk_t blk);
extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
blk_t blk);
extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
extern errcode_t
ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
ext2_badblocks_iterate *ret);
extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
blk_t *blk);
extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
ext2_badblocks_list *dest);
extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
ext2_badblocks_list bb2);
extern int ext2fs_u32_list_count(ext2_u32_list bb);
/* bb_compat */
extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
extern int badblocks_list_test(badblocks_list bb, blk_t blk);
extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
badblocks_iterate *ret);
extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
extern void badblocks_list_iterate_end(badblocks_iterate iter);
extern void badblocks_list_free(badblocks_list bb);
/* bb_inode.c */
extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
ext2_badblocks_list bb_list);
/* bitmaps.c */
extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
__u32 end,
__u32 real_end,
const char *descr,
ext2fs_generic_bitmap *ret);
extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
const char *descr,
ext2fs_block_bitmap *ret);
extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
const char *descr,
ext2fs_inode_bitmap *ret);
extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
ext2_ino_t end, ext2_ino_t *oend);
extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
blk_t end, blk_t *oend);
extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
/* block.c */
extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
ext2_ino_t ino,
int flags,
char *block_buf,
int (*func)(ext2_filsys fs,
blk_t *blocknr,
int blockcnt,
void *priv_data),
void *priv_data);
errcode_t ext2fs_block_iterate2(ext2_filsys fs,
ext2_ino_t ino,
int flags,
char *block_buf,
int (*func)(ext2_filsys fs,
blk_t *blocknr,
e2_blkcnt_t blockcnt,
blk_t ref_blk,
int ref_offset,
void *priv_data),
void *priv_data);
/* bmap.c */
extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
char *block_buf, int bmap_flags,
blk_t block, blk_t *phys_blk);
#if 0
/* bmove.c */
extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
ext2fs_block_bitmap reserve,
ext2fs_block_bitmap alloc_map,
int flags);
/* check_desc.c */
extern errcode_t ext2fs_check_desc(ext2_filsys fs);
/* closefs.c */
extern errcode_t ext2fs_close(ext2_filsys fs);
extern errcode_t ext2fs_flush(ext2_filsys fs);
extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
dgrp_t group,
blk_t *ret_super_blk,
blk_t *ret_old_desc_blk,
blk_t *ret_new_desc_blk,
int *ret_meta_bg);
extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
/* cmp_bitmaps.c */
extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
ext2fs_block_bitmap bm2);
extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
ext2fs_inode_bitmap bm2);
/* dblist.c */
extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
blk_t blk, int blockcnt);
extern void ext2fs_dblist_sort(ext2_dblist dblist,
int (*sortfunc)(const void *,
const void *));
extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
void *priv_data),
void *priv_data);
extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
blk_t blk, int blockcnt);
extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
ext2_dblist *dest);
extern int ext2fs_dblist_count(ext2_dblist dblist);
/* dblist_dir.c */
extern errcode_t
ext2fs_dblist_dir_iterate(ext2_dblist dblist,
int flags,
char *block_buf,
int (*func)(ext2_ino_t dir,
int entry,
struct ext2_dir_entry *dirent,
int offset,
int blocksize,
char *buf,
void *priv_data),
void *priv_data);
/* dirblock.c */
extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
void *buf);
extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
void *buf, int flags);
extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
void *buf);
extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
void *buf, int flags);
/* dirhash.c */
extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
const __u32 *seed,
ext2_dirhash_t *ret_hash,
ext2_dirhash_t *ret_minor_hash);
/* dir_iterate.c */
extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
ext2_ino_t dir,
int flags,
char *block_buf,
int (*func)(struct ext2_dir_entry *dirent,
int offset,
int blocksize,
char *buf,
void *priv_data),
void *priv_data);
extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
ext2_ino_t dir,
int flags,
char *block_buf,
int (*func)(ext2_ino_t dir,
int entry,
struct ext2_dir_entry *dirent,
int offset,
int blocksize,
char *buf,
void *priv_data),
void *priv_data);
/* dupfs.c */
extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
/* expanddir.c */
extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
/* ext_attr.c */
extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
void *buf);
extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
char *block_buf,
int adjust, __u32 *newcount);
/* fileio.c */
extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
int flags, ext2_file_t *ret);
extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
int flags, ext2_file_t *ret);
extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
extern errcode_t ext2fs_file_close(ext2_file_t file);
extern errcode_t ext2fs_file_flush(ext2_file_t file);
extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
unsigned int wanted, unsigned int *got);
extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
unsigned int nbytes, unsigned int *written);
extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
int whence, __u64 *ret_pos);
extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
int whence, ext2_off_t *ret_pos);
errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
/* finddev.c */
extern char *ext2fs_find_block_device(dev_t device);
/* flushb.c */
extern errcode_t ext2fs_sync_device(int fd, int flushb);
/* freefs.c */
extern void ext2fs_free(ext2_filsys fs);
extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
extern void ext2fs_free_dblist(ext2_dblist dblist);
extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
extern void ext2fs_u32_list_free(ext2_u32_list bb);
/* getsize.c */
extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
blk_t *retblocks);
/* getsectsize.c */
errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
/* imager.c */
extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
/* ind_block.c */
errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
/* initialize.c */
extern errcode_t ext2fs_initialize(const char *name, int flags,
struct ext2_super_block *param,
io_manager manager, ext2_filsys *ret_fs);
/* icount.c */
extern void ext2fs_free_icount(ext2_icount_t icount);
extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
unsigned int size,
ext2_icount_t hint, ext2_icount_t *ret);
extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
unsigned int size,
ext2_icount_t *ret);
extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
__u16 *ret);
extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
__u16 *ret);
extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
__u16 *ret);
extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
__u16 count);
extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
/* inode.c */
extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
ext2_ino_t *ino,
struct ext2_inode *inode,
int bufsize);
extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
ext2_inode_scan *ret_scan);
extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
struct ext2_inode *inode);
extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
int group);
extern void ext2fs_set_inode_callback
(ext2_inode_scan scan,
errcode_t (*done_group)(ext2_filsys fs,
dgrp_t group,
void * priv_data),
void *done_group_data);
extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
int clear_flags);
extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode,
int bufsize);
extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode);
extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode,
int bufsize);
extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode);
extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode);
extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
/* inode_io.c */
extern io_manager inode_io_manager;
extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
char **name);
extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
char **name);
/* ismounted.c */
extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
char *mtpt, int mtlen);
/* namei.c */
extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
int namelen, char *buf, ext2_ino_t *inode);
extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
const char *name, ext2_ino_t *inode);
errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
const char *name, ext2_ino_t *inode);
extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
ext2_ino_t inode, ext2_ino_t *res_inode);
/* native.c */
int ext2fs_native_flag(void);
/* newdir.c */
extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
ext2_ino_t parent_ino, char **block);
/* mkdir.c */
extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
const char *name);
/* mkjournal.c */
extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
__u32 size, int flags,
char **ret_jsb);
extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
ext2_filsys journal_dev);
extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
int flags);
/* openfs.c */
extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
unsigned int block_size, io_manager manager,
ext2_filsys *ret_fs);
extern errcode_t ext2fs_open2(const char *name, const char *io_options,
int flags, int superblock,
unsigned int block_size, io_manager manager,
ext2_filsys *ret_fs);
extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
dgrp_t i);
errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
/* get_pathname.c */
extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
char **name);
/* link.c */
errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
ext2_ino_t ino, int flags);
errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
ext2_ino_t ino, int flags);
/* read_bb.c */
extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
ext2_badblocks_list *bb_list);
/* read_bb_file.c */
extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
ext2_badblocks_list *bb_list,
void *priv_data,
void (*invalid)(ext2_filsys fs,
blk_t blk,
char *badstr,
void *priv_data));
extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
ext2_badblocks_list *bb_list,
void (*invalid)(ext2_filsys fs,
blk_t blk));
/* res_gdt.c */
extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
/* rs_bitmap.c */
extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
__u32 new_real_end,
ext2fs_generic_bitmap bmap);
extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
ext2fs_inode_bitmap bmap);
extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
ext2fs_block_bitmap bmap);
extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
ext2fs_generic_bitmap *dest);
/* swapfs.c */
extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
int has_header);
extern void ext2fs_swap_super(struct ext2_super_block * super);
extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
struct ext2_inode_large *f, int hostorder,
int bufsize);
extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
struct ext2_inode *f, int hostorder);
/* valid_blk.c */
extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
/* version.c */
extern int ext2fs_parse_version_string(const char *ver_string);
extern int ext2fs_get_library_version(const char **ver_string,
const char **date_string);
/* write_bb_file.c */
extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
unsigned int flags,
FILE *f);
/* inline functions */
extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
extern errcode_t ext2fs_free_mem(void *ptr);
extern errcode_t ext2fs_resize_mem(unsigned long old_size,
unsigned long size, void *ptr);
extern void ext2fs_mark_super_dirty(ext2_filsys fs);
extern void ext2fs_mark_changed(ext2_filsys fs);
extern int ext2fs_test_changed(ext2_filsys fs);
extern void ext2fs_mark_valid(ext2_filsys fs);
extern void ext2fs_unmark_valid(ext2_filsys fs);
extern int ext2fs_test_valid(ext2_filsys fs);
extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
extern int ext2fs_test_ib_dirty(ext2_filsys fs);
extern int ext2fs_test_bb_dirty(ext2_filsys fs);
extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
struct ext2_inode *inode);
#ifdef __cplusplus