mirror of https://github.com/vitalif/e2fsprogs
1006 lines
29 KiB
C
1006 lines
29 KiB
C
/*
|
|
* 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
|
|
|
|
/*
|
|
* Non-GNU C compilers won't necessarily understand inline
|
|
*/
|
|
#if (!defined(__GNUC__) && !defined(__WATCOMC__))
|
|
#define NO_INLINE_FUNCS
|
|
#endif
|
|
|
|
/*
|
|
* 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_OFFSET 1024
|
|
#define SUPERBLOCK_SIZE 1024
|
|
|
|
/*
|
|
* The last ext2fs revision level that this version of the library is
|
|
* able to support.
|
|
*/
|
|
#define EXT2_LIB_CURRENT_REV 0
|
|
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
|
|
#if EXT2_FLAT_INCLUDES
|
|
#include "e2_types.h"
|
|
#else
|
|
#include <asm/types.h>
|
|
#if !defined(__GNUC__) || defined(__STRICT_ANSI__) /* asm/types.h already defines __s64 and __u64 otherwise */
|
|
#if SIZEOF_LONG == 8
|
|
typedef __signed__ long __s64;
|
|
typedef unsigned long __u64;
|
|
#elif SIZEOF_LONG_LONG == 8 || \
|
|
defined(__GNUC__) && (((~0UL) == 0xffffffff) || defined(__i386__))
|
|
typedef __signed__ long long __s64;
|
|
typedef unsigned long long __u64;
|
|
#endif /* SIZEOF_LONG == 8 */
|
|
#endif
|
|
#endif /* EXT2_FLAT_INCLUDES */
|
|
|
|
typedef __u32 blk_t;
|
|
typedef __u32 dgrp_t;
|
|
typedef __u32 ext2_off_t;
|
|
typedef __s64 e2_blkcnt_t;
|
|
|
|
#if EXT2_FLAT_INCLUDES
|
|
#include "com_err.h"
|
|
#include "ext2_io.h"
|
|
#include "ext2_err.h"
|
|
#else
|
|
#include "et/com_err.h"
|
|
#include "ext2fs/ext2_io.h"
|
|
#include "ext2fs/ext2_err.h"
|
|
#endif
|
|
|
|
/*
|
|
* Portability help for Microsoft Visual C++
|
|
*/
|
|
#ifdef _MSC_VER
|
|
#define EXT2_QSORT_TYPE int __cdecl
|
|
#else
|
|
#define EXT2_QSORT_TYPE int
|
|
#endif
|
|
|
|
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];
|
|
};
|
|
|
|
#define EXT2FS_MARK_ERROR 0
|
|
#define EXT2FS_UNMARK_ERROR 1
|
|
#define EXT2FS_TEST_ERROR 2
|
|
|
|
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;
|
|
|
|
#ifdef EXT2_DYNAMIC_REV
|
|
#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
|
|
#else
|
|
#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO
|
|
#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
|
|
#endif
|
|
|
|
/*
|
|
* badblocks list definitions
|
|
*/
|
|
|
|
typedef struct ext2_struct_badblocks_list *ext2_badblocks_list;
|
|
typedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate;
|
|
|
|
/* old */
|
|
typedef struct ext2_struct_badblocks_list *badblocks_list;
|
|
typedef struct ext2_struct_badblocks_iterate *badblocks_iterate;
|
|
|
|
#define BADBLOCKS_FLAG_DIRTY 1
|
|
|
|
/*
|
|
* ext2_dblist structure and abstractions (see dblist.c)
|
|
*/
|
|
struct ext2_db_entry {
|
|
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
|
|
*/
|
|
|
|
#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_SWAP_BYTES_READ 0x80
|
|
#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
|
|
#define EXT2_FLAG_MASTER_SB_ONLY 0x200
|
|
#define EXT2_FLAG_FORCE 0x400
|
|
|
|
/*
|
|
* 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
|
|
|
|
struct struct_ext2_filsys {
|
|
errcode_t magic;
|
|
io_channel io;
|
|
int flags;
|
|
char * device_name;
|
|
struct ext2_super_block * super;
|
|
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, ino_t ino, blk_t *blocks);
|
|
errcode_t (*check_directory)(ext2_filsys fs, ino_t ino);
|
|
errcode_t (*write_bitmaps)(ext2_filsys fs);
|
|
errcode_t (*read_inode)(ext2_filsys fs, ino_t ino,
|
|
struct ext2_inode *inode);
|
|
errcode_t (*write_inode)(ext2_filsys fs, ino_t ino,
|
|
struct ext2_inode *inode);
|
|
badblocks_list badblocks;
|
|
ext2_dblist dblist;
|
|
__u32 stride; /* for mke2fs */
|
|
/*
|
|
* Reserved for future expansion
|
|
*/
|
|
__u32 reserved[11];
|
|
|
|
/*
|
|
* Reserved for the use of the calling application.
|
|
*/
|
|
void * priv_data;
|
|
|
|
/*
|
|
* Inode cache
|
|
*/
|
|
struct ext2_inode_cache *icache;
|
|
};
|
|
|
|
#if EXT2_FLAT_INCLUDES
|
|
#include "e2_bitops.h"
|
|
#else
|
|
#include "ext2fs/bitops.h"
|
|
#endif
|
|
|
|
/*
|
|
* Return flags for the block iterator functions
|
|
*/
|
|
#define BLOCK_CHANGED 1
|
|
#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_APPEND 1
|
|
#define BLOCK_FLAG_HOLE 1
|
|
#define BLOCK_FLAG_DEPTH_TRAVERSE 2
|
|
#define BLOCK_FLAG_DATA_ONLY 4
|
|
|
|
#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)
|
|
#define BLOCK_COUNT_TRANSLATOR (-4)
|
|
|
|
#if 0
|
|
/*
|
|
* Flags for ext2fs_move_blocks
|
|
*/
|
|
#define EXT2_BMOVE_GET_DBLIST 0x0001
|
|
#define EXT2_BMOVE_DEBUG 0x0002
|
|
#endif
|
|
|
|
/*
|
|
* Return flags for the directory iterator functions
|
|
*/
|
|
#define DIRENT_CHANGED 1
|
|
#define DIRENT_ABORT 2
|
|
#define DIRENT_ERROR 3
|
|
|
|
/*
|
|
* Directory iterator flags
|
|
*/
|
|
|
|
#define DIRENT_FLAG_INCLUDE_EMPTY 1
|
|
|
|
|
|
#define DIRENT_DOT_FILE 1
|
|
#define DIRENT_DOT_DOT_FILE 2
|
|
#define DIRENT_OTHER_FILE 3
|
|
|
|
/*
|
|
* 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
|
|
#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
|
|
|
|
/*
|
|
* ext2fs_check_if_mounted flags
|
|
*/
|
|
#define EXT2_MF_MOUNTED 1
|
|
#define EXT2_MF_ISROOT 2
|
|
#define EXT2_MF_READONLY 4
|
|
|
|
/*
|
|
* 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)
|
|
#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
|
|
#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
|
|
|
|
/*
|
|
* ext2_icount_t abstraction
|
|
*/
|
|
#define EXT2_ICOUNT_OPT_INCREMENT 0x01
|
|
|
|
typedef struct ext2_icount *ext2_icount_t;
|
|
|
|
/*
|
|
* Flags for ext2fs_bmap
|
|
*/
|
|
#define BMAP_ALLOC 1
|
|
|
|
/*
|
|
* For checking structure magic numbers...
|
|
*/
|
|
|
|
#define EXT2_CHECK_MAGIC(struct, code) \
|
|
if ((struct)->magic != (code)) return (code)
|
|
|
|
|
|
/*
|
|
* The ext2fs library private definition of the ext2 superblock, so we
|
|
* don't have to depend on the kernel's definition of the superblock,
|
|
* which might not have the latest features.
|
|
*/
|
|
struct ext2fs_sb {
|
|
__u32 s_inodes_count; /* Inodes count */
|
|
__u32 s_blocks_count; /* Blocks count */
|
|
__u32 s_r_blocks_count; /* Reserved blocks count */
|
|
__u32 s_free_blocks_count; /* Free blocks count */
|
|
__u32 s_free_inodes_count; /* Free inodes count */
|
|
__u32 s_first_data_block; /* First Data Block */
|
|
__u32 s_log_block_size; /* Block size */
|
|
__s32 s_log_frag_size; /* Fragment size */
|
|
__u32 s_blocks_per_group; /* # Blocks per group */
|
|
__u32 s_frags_per_group; /* # Fragments per group */
|
|
__u32 s_inodes_per_group; /* # Inodes per group */
|
|
__u32 s_mtime; /* Mount time */
|
|
__u32 s_wtime; /* Write time */
|
|
__u16 s_mnt_count; /* Mount count */
|
|
__s16 s_max_mnt_count; /* Maximal mount count */
|
|
__u16 s_magic; /* Magic signature */
|
|
__u16 s_state; /* File system state */
|
|
__u16 s_errors; /* Behaviour when detecting errors */
|
|
__u16 s_minor_rev_level; /* minor revision level */
|
|
__u32 s_lastcheck; /* time of last check */
|
|
__u32 s_checkinterval; /* max. time between checks */
|
|
__u32 s_creator_os; /* OS */
|
|
__u32 s_rev_level; /* Revision level */
|
|
__u16 s_def_resuid; /* Default uid for reserved blocks */
|
|
__u16 s_def_resgid; /* Default gid for reserved blocks */
|
|
/*
|
|
* These fields are for EXT2_DYNAMIC_REV superblocks only.
|
|
*
|
|
* Note: the difference between the compatible feature set and
|
|
* the incompatible feature set is that if there is a bit set
|
|
* in the incompatible feature set that the kernel doesn't
|
|
* know about, it should refuse to mount the filesystem.
|
|
*
|
|
* e2fsck's requirements are more strict; if it doesn't know
|
|
* about a feature in either the compatible or incompatible
|
|
* feature set, it must abort and not try to meddle with
|
|
* things it doesn't understand...
|
|
*/
|
|
__u32 s_first_ino; /* First non-reserved inode */
|
|
__u16 s_inode_size; /* size of inode structure */
|
|
__u16 s_block_group_nr; /* block group # of this superblock */
|
|
__u32 s_feature_compat; /* compatible feature set */
|
|
__u32 s_feature_incompat; /* incompatible feature set */
|
|
__u32 s_feature_ro_compat; /* readonly-compatible feature set */
|
|
__u8 s_uuid[16]; /* 128-bit uuid for volume */
|
|
char s_volume_name[16]; /* volume name */
|
|
char s_last_mounted[64]; /* directory where last mounted */
|
|
__u32 s_algorithm_usage_bitmap; /* For compression */
|
|
/*
|
|
* Performance hints. Directory preallocation should only
|
|
* happen if the EXT2_COMPAT_PREALLOC flag is on.
|
|
*/
|
|
__u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
|
|
__u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
|
|
__u16 s_padding1;
|
|
/*
|
|
* Journaling support.
|
|
*/
|
|
__u8 s_journal_uuid[16]; /* uuid of journal superblock */
|
|
__u32 s_journal_inum; /* inode number of journal file */
|
|
|
|
__u32 s_reserved[199]; /* Padding to the end of the block */
|
|
};
|
|
|
|
#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
|
|
#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
|
|
|
|
/*
|
|
* Feature set definitions (that might not be in ext2_fs.h
|
|
*/
|
|
|
|
#ifndef EXT2_FEATURE_COMPAT_DIR_PREALLOC
|
|
#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
|
|
#endif
|
|
|
|
#ifndef EXT2_FEATURE_COMPAT_IMAGIC_INODES /* for AFS, etc. */
|
|
#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
|
|
#define EXT2_IMAGIC_FL 0x00002000
|
|
#endif
|
|
|
|
#ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
|
|
#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
|
|
#endif
|
|
|
|
#ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
|
|
#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
|
|
#endif
|
|
|
|
#ifndef EXT2_FEATURE_RO_COMPAT_LARGE_FILE
|
|
#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
|
|
#define i_size_high i_dir_acl
|
|
#endif
|
|
|
|
#ifndef EXT2_FEATURE_RO_COMPAT_BTREE_DIR
|
|
#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
|
|
#endif
|
|
|
|
#ifndef EXT2_FEATURE_INCOMPAT_COMPRESSION
|
|
#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
|
|
#endif
|
|
|
|
#ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
|
|
#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
|
|
#endif
|
|
|
|
#ifndef EXT3_FEATURE_INCOMPAT_RECOVER
|
|
#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
|
|
#endif
|
|
|
|
#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
|
|
EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
|
|
EXT3_FEATURE_COMPAT_HAS_JOURNAL)
|
|
/* This #ifdef is temporary until compression is fully supported */
|
|
#ifdef ENABLE_COMPRESSION
|
|
#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
|
|
/* If the below warning bugs you, then have
|
|
`CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
|
|
environment at configure time. */
|
|
#warning "Compression support is experimental"
|
|
#endif
|
|
#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
|
|
EXT2_FEATURE_INCOMPAT_COMPRESSION)
|
|
#else
|
|
#define EXT2_LIB_FEATURE_INCOMPAT_SUPP EXT2_FEATURE_INCOMPAT_FILETYPE
|
|
#endif
|
|
#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
|
|
EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
|
|
/*
|
|
* function prototypes
|
|
*/
|
|
|
|
/* alloc.c */
|
|
extern errcode_t ext2fs_new_inode(ext2_filsys fs, ino_t dir, int mode,
|
|
ext2fs_inode_bitmap map, 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_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_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 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);
|
|
|
|
/* 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,
|
|
ino_t end, 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,
|
|
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,
|
|
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, 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);
|
|
#endif
|
|
|
|
/* 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);
|
|
|
|
/* 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, 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, ino_t ino,
|
|
blk_t blk, int blockcnt);
|
|
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, 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)(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_write_dir_block(ext2_filsys fs, blk_t block,
|
|
void *buf);
|
|
|
|
/* dir_iterate.c */
|
|
extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
|
|
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);
|
|
|
|
/* 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, ino_t dir);
|
|
|
|
/* fileio.c */
|
|
extern errcode_t ext2fs_file_open(ext2_filsys fs, 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_read(ext2_file_t file, void *buf,
|
|
unsigned int wanted, unsigned int *got);
|
|
extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf,
|
|
unsigned int nbytes, unsigned int *written);
|
|
extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
|
|
int whence, ext2_off_t *ret_pos);
|
|
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);
|
|
|
|
/* 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(badblocks_list bb);
|
|
|
|
/* getsize.c */
|
|
extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
|
|
blk_t *retblocks);
|
|
|
|
/* initialize.c */
|
|
extern errcode_t ext2fs_initialize(const char *name, int flags,
|
|
struct ext2_super_block *param,
|
|
io_manager manager, ext2_filsys *ret_fs);
|
|
|
|
/* inode.c */
|
|
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, 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,
|
|
ext2_inode_scan scan,
|
|
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 (ext2_filsys fs, ino_t ino,
|
|
struct ext2_inode * inode);
|
|
extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino,
|
|
struct ext2_inode * inode);
|
|
extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks);
|
|
extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino);
|
|
|
|
/* icount.c */
|
|
extern void ext2fs_free_icount(ext2_icount_t icount);
|
|
extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size,
|
|
ext2_icount_t hint, ext2_icount_t *ret);
|
|
extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size,
|
|
ext2_icount_t *ret);
|
|
extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino,
|
|
__u16 *ret);
|
|
extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino,
|
|
__u16 *ret);
|
|
extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino,
|
|
__u16 *ret);
|
|
extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino,
|
|
__u16 count);
|
|
extern ino_t ext2fs_get_icount_size(ext2_icount_t icount);
|
|
errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
|
|
|
|
/* ismounted.c */
|
|
extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
|
|
|
|
/* namei.c */
|
|
extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name,
|
|
int namelen, char *buf, ino_t *inode);
|
|
extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd,
|
|
const char *name, ino_t *inode);
|
|
errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd,
|
|
const char *name, ino_t *inode);
|
|
extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd,
|
|
ino_t inode, ino_t *res_inode);
|
|
|
|
/* native.c */
|
|
int ext2fs_native_flag(void);
|
|
|
|
/* newdir.c */
|
|
extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino,
|
|
ino_t parent_ino, char **block);
|
|
|
|
/* mkdir.c */
|
|
extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum,
|
|
const char *name);
|
|
|
|
/* openfs.c */
|
|
extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
|
|
int block_size, io_manager manager,
|
|
ext2_filsys *ret_fs);
|
|
|
|
/* get_pathname.c */
|
|
extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino,
|
|
char **name);
|
|
|
|
/* link.c */
|
|
errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name,
|
|
ino_t ino, int flags);
|
|
errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name,
|
|
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_FILE(ext2_filsys fs, FILE *f,
|
|
ext2_badblocks_list *bb_list,
|
|
void (*invalid)(ext2_filsys fs,
|
|
blk_t blk));
|
|
|
|
/* 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_super(struct ext2_super_block * super);
|
|
extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
|
|
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);
|
|
|
|
/* 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, ino_t ino);
|
|
|
|
/*
|
|
* The actual inlined functions definitions themselves...
|
|
*
|
|
* If NO_INLINE_FUNCS is defined, then we won't try to do inline
|
|
* functions at all!
|
|
*/
|
|
#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
|
|
#ifdef INCLUDE_INLINE_FUNCS
|
|
#define _INLINE_ extern
|
|
#else
|
|
#ifdef __GNUC__
|
|
#define _INLINE_ extern __inline__
|
|
#else /* For Watcom C */
|
|
#define _INLINE_ extern inline
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef EXT2_CUSTOM_MEMORY_ROUTINES
|
|
/*
|
|
* Allocate memory
|
|
*/
|
|
_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr)
|
|
{
|
|
*ptr = malloc(size);
|
|
if (!*ptr)
|
|
return EXT2_ET_NO_MEMORY;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Free memory
|
|
*/
|
|
_INLINE_ errcode_t ext2fs_free_mem(void **ptr)
|
|
{
|
|
free(*ptr);
|
|
*ptr = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Resize memory
|
|
*/
|
|
_INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size,
|
|
unsigned long size, void **ptr)
|
|
{
|
|
void *p;
|
|
|
|
p = realloc(*ptr, size);
|
|
if (!p)
|
|
return EXT2_ET_NO_MEMORY;
|
|
*ptr = p;
|
|
return 0;
|
|
}
|
|
#endif /* Custom memory routines */
|
|
|
|
/*
|
|
* Mark a filesystem superblock as dirty
|
|
*/
|
|
_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
|
|
{
|
|
fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
|
|
}
|
|
|
|
/*
|
|
* Mark a filesystem as changed
|
|
*/
|
|
_INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
|
|
{
|
|
fs->flags |= EXT2_FLAG_CHANGED;
|
|
}
|
|
|
|
/*
|
|
* Check to see if a filesystem has changed
|
|
*/
|
|
_INLINE_ int ext2fs_test_changed(ext2_filsys fs)
|
|
{
|
|
return (fs->flags & EXT2_FLAG_CHANGED);
|
|
}
|
|
|
|
/*
|
|
* Mark a filesystem as valid
|
|
*/
|
|
_INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
|
|
{
|
|
fs->flags |= EXT2_FLAG_VALID;
|
|
}
|
|
|
|
/*
|
|
* Mark a filesystem as NOT valid
|
|
*/
|
|
_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
|
|
{
|
|
fs->flags &= ~EXT2_FLAG_VALID;
|
|
}
|
|
|
|
/*
|
|
* Check to see if a filesystem is valid
|
|
*/
|
|
_INLINE_ int ext2fs_test_valid(ext2_filsys fs)
|
|
{
|
|
return (fs->flags & EXT2_FLAG_VALID);
|
|
}
|
|
|
|
/*
|
|
* Mark the inode bitmap as dirty
|
|
*/
|
|
_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
|
|
{
|
|
fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
|
|
}
|
|
|
|
/*
|
|
* Mark the block bitmap as dirty
|
|
*/
|
|
_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
|
|
{
|
|
fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
|
|
}
|
|
|
|
/*
|
|
* Check to see if a filesystem's inode bitmap is dirty
|
|
*/
|
|
_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
|
|
{
|
|
return (fs->flags & EXT2_FLAG_IB_DIRTY);
|
|
}
|
|
|
|
/*
|
|
* Check to see if a filesystem's block bitmap is dirty
|
|
*/
|
|
_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
|
|
{
|
|
return (fs->flags & EXT2_FLAG_BB_DIRTY);
|
|
}
|
|
|
|
/*
|
|
* Return the group # of a block
|
|
*/
|
|
_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
|
|
{
|
|
return (blk - fs->super->s_first_data_block) /
|
|
fs->super->s_blocks_per_group;
|
|
}
|
|
|
|
/*
|
|
* Return the group # of an inode number
|
|
*/
|
|
_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino)
|
|
{
|
|
return (ino - 1) / fs->super->s_inodes_per_group;
|
|
}
|
|
#undef _INLINE_
|
|
#endif
|
|
|
|
#endif /* _EXT2FS_EXT2FS_H */
|