AlkantarClanX12
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/*
* 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 Library
* General Public License, version 2.
* %End-Header%
*/
#ifndef _EXT2FS_EXT2FS_H
#define _EXT2FS_EXT2FS_H
#ifdef __GNUC__
#define EXT2FS_ATTR(x) __attribute__(x)
#else
#define EXT2FS_ATTR(x)
#endif
#ifdef CONFIG_TDB
#define EXT2FS_NO_TDB_UNUSED
#else
#define EXT2FS_NO_TDB_UNUSED EXT2FS_ATTR((unused))
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* 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
#define UUID_STR_SIZE 37
/*
* The last ext2fs revision level that this version of the library is
* able to support.
*/
#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#if EXT2_FLAT_INCLUDES
#include "e2_types.h"
#include "ext2_fs.h"
#include "ext3_extents.h"
#else
#include <ext2fs/ext2_types.h>
#include <ext2fs/ext2_fs.h>
#include <ext2fs/ext3_extents.h>
#endif /* EXT2_FLAT_INCLUDES */
typedef __u32 __bitwise ext2_ino_t;
typedef __u32 __bitwise blk_t;
typedef __u64 __bitwise blk64_t;
typedef __u32 __bitwise dgrp_t;
typedef __s32 __bitwise ext2_off_t;
typedef __s64 __bitwise ext2_off64_t;
typedef __s64 __bitwise e2_blkcnt_t;
typedef __u32 __bitwise ext2_dirhash_t;
#if EXT2_FLAT_INCLUDES
#include "com_err.h"
#include "ext2_io.h"
#include "ext2_err.h"
#include "ext2_ext_attr.h"
#else
#include <et/com_err.h>
#include <ext2fs/ext2_io.h>
#include <ext2fs/ext2_err.h>
#include <ext2fs/ext2_ext_attr.h>
#endif
#include "hashmap.h"
/*
* 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;
#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;
#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
/*
* 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;
#define BADBLOCKS_FLAG_DIRTY 1
/*
* ext2_dblist structure and abstractions (see dblist.c)
*/
struct ext2_db_entry2 {
ext2_ino_t ino;
blk64_t blk;
e2_blkcnt_t blockcnt;
};
/* Ye Olde 32-bit version */
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_SWAP_BYTES_READ 0x80
#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
#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
#define EXT2_FLAG_EXCLUSIVE 0x4000
#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
#define EXT2_FLAG_64BITS 0x20000
#define EXT2_FLAG_PRINT_PROGRESS 0x40000
#define EXT2_FLAG_DIRECT_IO 0x80000
#define EXT2_FLAG_SKIP_MMP 0x100000
#define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000
#define EXT2_FLAG_SHARE_DUP 0x400000
#define EXT2_FLAG_IGNORE_SB_ERRORS 0x800000
#define EXT2_FLAG_BBITMAP_TAIL_PROBLEM 0x1000000
#define EXT2_FLAG_IBITMAP_TAIL_PROBLEM 0x2000000
/*
* 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
*/
#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
#define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
#define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
struct blk_alloc_ctx;
struct opaque_ext2_group_desc;
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 opaque_ext2_group_desc * group_desc;
unsigned int inode_blocks_per_group;
ext2fs_inode_bitmap inode_map;
ext2fs_block_bitmap block_map;
/* XXX FIXME-64: not 64-bit safe, but not used? */
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;
time_t now;
int cluster_ratio_bits;
__u16 default_bitmap_type;
__u16 pad;
/*
* RedHat specific change to prevent ABI change by using 8
* reserved bytes
*/
const struct ext2fs_nls_table *encoding;
/*
* Reserved for future expansion
*/
__u32 reserved[5 - (sizeof(long int)/4)];
/*
* Reserved for the use of the calling application.
*/
void * priv_data;
/*
* Inode cache
*/
struct ext2_inode_cache *icache;
io_channel image_io;
/*
* More callback functions
*/
errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
blk64_t *ret);
errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,
blk64_t *ret, struct blk_alloc_ctx *ctx);
void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
/*
* Buffers for Multiple mount protection(MMP) block.
*/
void *mmp_buf;
void *mmp_cmp;
int mmp_fd;
/*
* Time at which e2fsck last updated the MMP block.
*/
long mmp_last_written;
/* progress operation functions */
struct ext2fs_progress_ops *progress_ops;
/* Precomputed FS UUID checksum for seeding other checksums */
__u32 csum_seed;
io_channel journal_io;
char *journal_name;
/* New block range allocation hooks */
errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
blk64_t len, blk64_t *pblk, blk64_t *plen);
void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
int inuse);
/* hashmap for SHA of data blocks */
struct ext2fs_hashmap* block_sha_map;
};
#if EXT2_FLAT_INCLUDES
#include "e2_bitops.h"
#else
#include <ext2fs/bitops.h>
#endif
/*
* 64-bit bitmap backend types
*/
#define EXT2FS_BMAP64_BITARRAY 1
#define EXT2FS_BMAP64_RBTREE 2
#define EXT2FS_BMAP64_AUTODIR 3
/*
* Return flags for the block iterator functions
*/
#define BLOCK_CHANGED 1
#define BLOCK_ABORT 2
#define BLOCK_ERROR 4
#define BLOCK_INLINE_DATA_CHANGED 8
/*
* 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_DEPTH_TRAVERSE indicates that the iterator function for
* the indirect, doubly indirect, etc. blocks should be called after
* all of the blocks contained 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_READ_ONLY is a promise by the caller that it will not
* modify returned block number.
*
* 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_READ_ONLY 8
#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)
#define BLOCK_ALLOC_UNKNOWN 0
#define BLOCK_ALLOC_DATA 1
#define BLOCK_ALLOC_METADATA 2
struct blk_alloc_ctx {
ext2_ino_t ino;
struct ext2_inode *inode;
blk64_t lblk;
int flags;
};
#if 0
/*
* Flags for ext2fs_move_blocks
*/
#define EXT2_BMOVE_GET_DBLIST 0x0001
#define EXT2_BMOVE_DEBUG 0x0002
#endif
/*
* Generic (non-filesystem layout specific) extents structure
*/
#define EXT2_EXTENT_FLAGS_LEAF 0x0001
#define EXT2_EXTENT_FLAGS_UNINIT 0x0002
#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
struct ext2fs_extent {
blk64_t e_pblk; /* first physical block */
blk64_t e_lblk; /* first logical block extent covers */
__u32 e_len; /* number of blocks covered by extent */
__u32 e_flags; /* extent flags */
};
typedef struct ext2_extent_handle *ext2_extent_handle_t;
typedef struct ext2_extent_path *ext2_extent_path_t;
/*
* Flags used by ext2fs_extent_get()
*/
#define EXT2_EXTENT_CURRENT 0x0000
#define EXT2_EXTENT_MOVE_MASK 0x000F
#define EXT2_EXTENT_ROOT 0x0001
#define EXT2_EXTENT_LAST_LEAF 0x0002
#define EXT2_EXTENT_FIRST_SIB 0x0003
#define EXT2_EXTENT_LAST_SIB 0x0004
#define EXT2_EXTENT_NEXT_SIB 0x0005
#define EXT2_EXTENT_PREV_SIB 0x0006
#define EXT2_EXTENT_NEXT_LEAF 0x0007
#define EXT2_EXTENT_PREV_LEAF 0x0008
#define EXT2_EXTENT_NEXT 0x0009
#define EXT2_EXTENT_PREV 0x000A
#define EXT2_EXTENT_UP 0x000B
#define EXT2_EXTENT_DOWN 0x000C
#define EXT2_EXTENT_DOWN_AND_LAST 0x000D
/*
* Flags used by ext2fs_extent_insert()
*/
#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
/*
* Flags used by ext2fs_extent_delete()
*/
#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */
/*
* Flags used by ext2fs_extent_set_bmap()
*/
#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
/*
* Data structure returned by ext2fs_extent_get_info()
*/
struct ext2_extent_info {
int curr_entry;
int curr_level;
int num_entries;
int max_entries;
int max_depth;
int bytes_avail;
blk64_t max_lblk;
blk64_t max_pblk;
__u32 max_len;
__u32 max_uninit_len;
};
/*
* Flags for directory block reading and writing functions
*/
#define EXT2_DIRBLOCK_V2_STRUCT 0x0001
/*
* 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_FLAG_INCLUDE_REMOVED 2
#define DIRENT_FLAG_INCLUDE_CSUM 4
#define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
#define DIRENT_DOT_FILE 1
#define DIRENT_DOT_DOT_FILE 2
#define DIRENT_OTHER_FILE 3
#define DIRENT_DELETED_FILE 4
#define DIRENT_CHECKSUM 5
/*
* 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
#define EXT2_SF_DO_LAZY 0x0010
#define EXT2_SF_WARN_GARBAGE_INODES 0x0020
/*
* 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)
#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 size of an inode
*/
#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
/*
* ext2_icount_t abstraction
*/
#define EXT2_ICOUNT_OPT_INCREMENT 0x01
#define EXT2_ICOUNT_OPT_FULLMAP 0x02
typedef struct ext2_icount *ext2_icount_t;
/*
* Flags for ext2fs_bmap
*/
#define BMAP_ALLOC 0x0001
#define BMAP_SET 0x0002
#define BMAP_UNINIT 0x0004
#define BMAP_ZERO 0x0008
/*
* Returned flags from ext2fs_bmap
*/
#define BMAP_RET_UNINIT 0x0001
/*
* Flags for ext2fs_read_inode2
*/
#define READ_INODE_NOCSUM 0x0001
/*
* Flags for ext2fs_write_inode2
*/
#define WRITE_INODE_NOCSUM 0x0001
/*
* Flags for imager.c functions
*/
#define IMAGER_FLAG_INODEMAP 1
#define IMAGER_FLAG_SPARSEWRITE 2
/*
* For checking structure magic numbers...
*/
#define EXT2_CHECK_MAGIC(struct, code) \
if ((struct)->magic != (code)) return (code)
/*
* Features supported by this version of the library
*/
#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
EXT2_FEATURE_COMPAT_RESIZE_INODE|\
EXT2_FEATURE_COMPAT_DIR_INDEX|\
EXT2_FEATURE_COMPAT_EXT_ATTR|\
EXT4_FEATURE_COMPAT_SPARSE_SUPER2)
#ifdef CONFIG_MMP
#define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
#else
#define EXT4_LIB_INCOMPAT_MMP (0)
#endif
#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
EXT2_FEATURE_INCOMPAT_META_BG|\
EXT3_FEATURE_INCOMPAT_RECOVER|\
EXT3_FEATURE_INCOMPAT_EXTENTS|\
EXT4_FEATURE_INCOMPAT_FLEX_BG|\
EXT4_FEATURE_INCOMPAT_EA_INODE|\
EXT4_LIB_INCOMPAT_MMP|\
EXT4_FEATURE_INCOMPAT_64BIT|\
EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
EXT4_FEATURE_INCOMPAT_ENCRYPT|\
EXT4_FEATURE_INCOMPAT_CASEFOLD|\
EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
EXT4_FEATURE_INCOMPAT_LARGEDIR)
#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
EXT4_FEATURE_RO_COMPAT_QUOTA|\
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
EXT4_FEATURE_RO_COMPAT_READONLY |\
EXT4_FEATURE_RO_COMPAT_PROJECT |\
EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
EXT4_FEATURE_RO_COMPAT_VERITY)
/*
* These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
* to ext2fs_openfs()
*/
#define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
/* Translate a block number to a cluster number */
#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
/* Translate a cluster number to a block number */
#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
/* Translate # of blks to # of clusters */
#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
(fs)->cluster_ratio_bits)
#if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
typedef struct stat64 ext2fs_struct_stat;
#else
typedef struct stat ext2fs_struct_stat;
#endif
/*
* For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
* avoid the fsync call.
*/
#define EXT2_FLAG_FLUSH_NO_SYNC 1
/*
* Modify and iterate extended attributes
*/
struct ext2_xattr_handle;
#define XATTR_ABORT 1
#define XATTR_CHANGED 2
/*
* function prototypes
*/
static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
{
return ext2fs_has_feature_metadata_csum(fs->super) ||
ext2fs_has_feature_gdt_csum(fs->super);
}
/* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
{
return file_size >= 0x80000000ULL;
}
/* alloc.c */
extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
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_new_block2(ext2_filsys fs, blk64_t goal,
ext2fs_block_bitmap map, blk64_t *ret);
extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
ext2fs_block_bitmap map, blk64_t *ret,
struct blk_alloc_ctx *ctx);
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_get_free_blocks2(ext2_filsys fs, blk64_t start,
blk64_t finish, int num,
ext2fs_block_bitmap map,
blk64_t *ret);
extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
char *block_buf, blk_t *ret);
extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
char *block_buf, blk64_t *ret);
extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
char *block_buf, blk64_t *ret,
struct blk_alloc_ctx *ctx);
extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
errcode_t (*func)(ext2_filsys fs,
blk64_t goal,
blk64_t *ret),
errcode_t (**old)(ext2_filsys fs,
blk64_t goal,
blk64_t *ret));
blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode, blk64_t lblk);
extern void ext2fs_set_new_range_callback(ext2_filsys fs,
errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
blk64_t len, blk64_t *pblk, blk64_t *plen),
errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
blk64_t len, blk64_t *pblk, blk64_t *plen));
extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
void (*func)(ext2_filsys fs, blk64_t blk,
blk_t num, int inuse),
void (**old)(ext2_filsys fs, blk64_t blk,
blk_t num, int inuse));
#define EXT2_NEWRANGE_FIXED_GOAL (0x1)
#define EXT2_NEWRANGE_MIN_LENGTH (0x2)
#define EXT2_NEWRANGE_ALL_FLAGS (0x3)
errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
blk64_t *plen);
#define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
#define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
#define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
blk_t len, blk64_t *ret);
/* alloc_sb.c */
extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
dgrp_t group,
ext2fs_block_bitmap bmap);
extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
void (*func)(ext2_filsys fs,
blk64_t blk,
int inuse),
void (**old)(ext2_filsys fs,
blk64_t blk,
int inuse));
/* 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);
void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
blk_t num, 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 void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
ext2fs_generic_bitmap *dest);
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_block_bitmap(ext2_filsys fs,
const char *descr,
ext2fs_block_bitmap *ret);
extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
const char *descr,
ext2fs_block_bitmap *ret);
extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
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 errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
blk64_t end, blk64_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);
extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
ext2fs_inode_bitmap bmap);
extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
__u64 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_resize_block_bitmap2(__u64 new_end,
__u64 new_real_end,
ext2fs_block_bitmap bmap);
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);
extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
ext2_ino_t start, unsigned int num,
void *in);
extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
__u64 start, size_t num,
void *in);
extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
ext2_ino_t start, unsigned int num,
void *out);
extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
__u64 start, size_t num,
void *out);
extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
blk_t start, unsigned int num,
void *in);
extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
blk64_t start, size_t num,
void *in);
extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
blk_t start, unsigned int num,
void *out);
extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
blk64_t start, size_t num,
void *out);
/* blknum.c */
extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
struct ext2_inode *inode);
extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
struct ext2_inode *inode);
extern blk64_t ext2fs_get_stat_i_blocks(ext2_filsys fs,
struct ext2_inode *inode);
extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
blk64_t blk);
extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
blk64_t blk);
extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
blk64_t blk);
extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
blk64_t blk);
extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
blk64_t blk);
extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
blk64_t blk);
/* Block group descriptor accessor functions */
extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
struct opaque_ext2_group_desc *gdp,
dgrp_t group);
extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
blk64_t blk);
extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
blk64_t blk);
extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
blk64_t blk);
extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
__u32 n);
extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
__u32 n);
extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
__u32 n);
extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
__u32 n);
extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
const struct ext2_inode *inode);
extern void ext2fs_file_acl_block_set(ext2_filsys fs,
struct ext2_inode *inode, blk64_t blk);
extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
ext2_off64_t size);
/* 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);
errcode_t ext2fs_block_iterate3(ext2_filsys fs,
ext2_ino_t ino,
int flags,
char *block_buf,
int (*func)(ext2_filsys fs,
blk64_t *blocknr,
e2_blkcnt_t blockcnt,
blk64_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);
extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
char *block_buf, int bmap_flags, blk64_t block,
int *ret_flags, blk64_t *phys_blk);
errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode, blk64_t lblk,
blk64_t *pblk);
#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_close2(ext2_filsys fs, int flags);
extern errcode_t ext2fs_close_free(ext2_filsys *fs);
extern errcode_t ext2fs_flush(ext2_filsys fs);
extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
dgrp_t group,
blk64_t *ret_super_blk,
blk64_t *ret_old_desc_blk,
blk64_t *ret_new_desc_blk,
blk_t *ret_used_blks);
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);
/* crc32c.c */
extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
/* csum.c */
extern void ext2fs_init_csum_seed(ext2_filsys fs);
extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
struct ext2_super_block *sb);
extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
struct ext2_super_block *sb);
extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
ext2_ino_t inum, blk64_t block,
struct ext2_ext_attr_header *hdr);
extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
blk64_t block,
struct ext2_ext_attr_header *hdr);
#define EXT2_DIRENT_TAIL(block, blocksize) \
((struct ext2_dir_entry_tail *)(((char *)(block)) + \
(blocksize) - sizeof(struct ext2_dir_entry_tail)))
extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
struct ext2_dir_entry_tail *t);
extern int ext2fs_dirent_has_tail(ext2_filsys fs,
struct ext2_dir_entry *dirent);
extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
struct ext2_dir_entry *dirent);
extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
struct ext2_dir_entry *dirent);
extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
struct ext2_dir_entry *dirent);
extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
struct ext2_dir_entry *dirent,
struct ext2_dx_countlimit **cc,
int *offset);
extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
ext2_ino_t inum,
struct ext3_extent_header *eh);
extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
ext2_ino_t inum,
struct ext3_extent_header *eh);
extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
char *bitmap, int size);
extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
char *bitmap, int size);
extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
char *bitmap, int size);
extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
char *bitmap, int size);
extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
struct ext2_inode_large *inode);
extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
struct ext2_inode_large *inode);
extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
/* dblist.c */
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 errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
blk64_t blk, e2_blkcnt_t blockcnt);
extern void ext2fs_dblist_sort(ext2_dblist dblist,
EXT2_QSORT_TYPE (*sortfunc)(const void *,
const void *));
extern void ext2fs_dblist_sort2(ext2_dblist dblist,
EXT2_QSORT_TYPE (*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_dblist_iterate2(ext2_dblist dblist,
int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
void *priv_data),
void *priv_data);
extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
void *priv_data),
unsigned long long start,
unsigned long long count,
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_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
blk64_t blk, e2_blkcnt_t blockcnt);
extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
ext2_dblist *dest);
extern int ext2fs_dblist_count(ext2_dblist dblist);
extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
struct ext2_db_entry **entry);
extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
struct ext2_db_entry2 **entry);
extern errcode_t ext2fs_dblist_drop_last(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);
#if 0
/* digest_encode.c */
#define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
extern int ext2fs_digest_encode(const char *src, int len, char *dst);
extern int ext2fs_digest_decode(const char *src, int len, char *dst);
#endif
/* 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_read_dir_block3(ext2_filsys fs, blk64_t block,
void *buf, int flags);
extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
void *buf, int flags, ext2_ino_t ino);
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);
extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
void *buf, int flags);
extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
void *buf, int flags, ext2_ino_t ino);
/* 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);
extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
const struct ext2fs_nls_table *charset,
int hash_flags,
const __u32 *seed,
ext2_dirhash_t *ret_hash,
ext2_dirhash_t *ret_minor_hash);
/* dir_iterate.c */
extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
struct ext2_dir_entry *dirent,
unsigned int *rec_len);
extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
unsigned int len,
struct ext2_dir_entry *dirent);
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 __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
void *data);
extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
struct ext2_ext_attr_entry *entry,
void *data, __u32 *hash);
extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
void *buf);
extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
void *buf, ext2_ino_t inum);
extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
void *buf);
extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
void *buf);
extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
void *buf, ext2_ino_t inum);
extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
char *block_buf,
int adjust, __u32 *newcount);
extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
char *block_buf,
int adjust, __u32 *newcount);
extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
char *block_buf,
int adjust, __u32 *newcount,
ext2_ino_t inum);
errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
int (*func)(char *name, char *value,
size_t value_len, void *data),
void *data);
errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
void **value, size_t *value_len);
errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
const char *key,
const void *value,
size_t value_len);
errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
const char *key);
errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
struct ext2_xattr_handle **handle);
errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode_large *inode);
errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
size_t *size);
#define XATTR_HANDLE_FLAG_RAW 0x0001
errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
unsigned int *new_flags, unsigned int *old_flags);
extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
struct ext2_ext_attr_entry *end);
extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
/* extent.c */
extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
ext2_extent_handle_t *handle);
extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
ext2_extent_handle_t *ret_handle);
extern void ext2fs_extent_free(ext2_extent_handle_t handle);
extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
int flags, struct ext2fs_extent *extent);
extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
struct ext2fs_extent *extent);
extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
struct ext2fs_extent *extent);
extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
blk64_t logical, blk64_t physical,
int flags);
extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
struct ext2_extent_info *info);
extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
blk64_t blk);
extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
int leaf_level, blk64_t blk);
extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode);
/* fallocate.c */
#define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
#define EXT2_FALLOCATE_FORCE_INIT (0x2)
#define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
#define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
#define EXT2_FALLOCATE_ALL_FLAGS (0xF)
errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
struct ext2_inode *inode, blk64_t goal,
blk64_t start, blk64_t len);
/* 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);
struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
extern ext2_ino_t ext2fs_file_get_inode_num(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);
extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_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_dblist(ext2_dblist dblist);
extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
extern void ext2fs_u32_list_free(ext2_u32_list bb);
/* gen_bitmap.c */
extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
__u32 start, __u32 end,
__u32 real_end,
const char *descr, char *init_map,
ext2fs_generic_bitmap *ret);
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_copy_generic_bitmap(ext2fs_generic_bitmap src,
ext2fs_generic_bitmap *dest);
extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
errcode_t magic,
errcode_t neq,
ext2_ino_t end,
ext2_ino_t *oend);
extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
__u32 new_end,
__u32 new_real_end,
ext2fs_generic_bitmap bmap);
extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
ext2fs_generic_bitmap bm1,
ext2fs_generic_bitmap bm2);
extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
errcode_t magic,
__u32 start, __u32 num,
void *out);
extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
errcode_t magic,
__u32 start, __u32 num,
void *in);
extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
__u32 start, __u32 end,
__u32 *out);
extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
__u32 start, __u32 end,
__u32 *out);
/* gen_bitmap64.c */
void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
int type, __u64 start, __u64 end,
__u64 real_end,
const char *descr,
ext2fs_generic_bitmap *ret);
errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
ext2fs_generic_bitmap *dest);
void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
errcode_t neq,
__u64 end, __u64 *oend);
void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
__u64 new_end,
__u64 new_real_end);
errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
ext2fs_generic_bitmap bm1,
ext2fs_generic_bitmap bm2);
errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
__u64 start, unsigned int num,
void *out);
errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
__u64 start, unsigned int num,
void *in);
errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
ext2fs_block_bitmap *bitmap);
/* get_num_dirs.c */
extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
/* getsize.c */
extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
blk_t *retblocks);
extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
blk64_t *retblocks);
/* getsectsize.c */
extern int ext2fs_get_dio_alignment(int fd);
errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
/* i_block.c */
errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
blk64_t num_blocks);
errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
blk64_t num_blocks);
errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
/* 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_icount_tdb(ext2_filsys fs, char *tdb_dir,
int flags, ext2_icount_t *ret);
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 *);
/* inline.c */
extern errcode_t ext2fs_get_memalign(unsigned long size,
unsigned long align, void *ptr);
/* inline_data.c */
extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
size_t *size);
extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
void *buf, size_t *size);
extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
void *buf, size_t size);
/* inode.c */
extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
unsigned int cache_size);
extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
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);
#define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
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,
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_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_read_inode2(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode,
int bufsize, int flags);
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_inode2(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode,
int bufsize, int flags);
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);
/* punch.c */
/*
* NOTE: This function removes from an inode the blocks "start", "end", and
* every block in between.
*/
extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
char *block_buf, blk64_t start,
blk64_t end);
/* 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);
extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
ext2_ino_t parent_ino, __u32 *iblock);
/* nls_utf8.c */
extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
/* 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_zero_blocks(ext2_filsys fs, blk_t blk, int num,
blk_t *ret_blk, int *ret_count);
extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
blk64_t *ret_blk, int *ret_count);
extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
__u32 num_blocks, 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 num_blocks,
int flags);
extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
blk64_t goal, int flags);
extern int ext2fs_default_journal_size(__u64 num_blocks);
extern int ext2fs_journal_sb_start(int blocksize);
/* 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);
/*
* The dgrp_t argument to these two functions is not actually a group number
* but a block number offset within a group table! Convert with the formula
* (group_number / groups_per_block).
*/
extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
blk64_t group_block, dgrp_t i);
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);
/* symlink.c */
errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
const char *name, const char *target);
int ext2fs_is_fast_symlink(struct ext2_inode *inode);
/* mmp.c */
errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
errcode_t ext2fs_mmp_clear(ext2_filsys fs);
errcode_t ext2fs_mmp_init(ext2_filsys fs);
errcode_t ext2fs_mmp_start(ext2_filsys fs);
errcode_t ext2fs_mmp_update(ext2_filsys fs);
errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
errcode_t ext2fs_mmp_stop(ext2_filsys fs);
unsigned ext2fs_mmp_new_seq(void);
/* 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);
/*sha256.c */
#define EXT2FS_SHA256_LENGTH 32
#if 0
extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
unsigned char out[EXT2FS_SHA256_LENGTH]);
#endif
/* sha512.c */
#define EXT2FS_SHA512_LENGTH 64
extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
unsigned char out[EXT2FS_SHA512_LENGTH]);
/* swapfs.c */
extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
int flags);
extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
int flags);
extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
int has_header);
extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
struct ext2_ext_attr_header *from_hdr);
extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
struct ext2_ext_attr_entry *from_entry);
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_group_desc2(ext2_filsys, 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);
extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
/* unix_io.c */
extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
/* valid_blk.c */
extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
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 */
#ifdef NO_INLINE_FUNCS
extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
extern errcode_t ext2fs_get_array(unsigned long count,
unsigned long size, void *ptr);
extern errcode_t ext2fs_get_arrayzero(unsigned long count,
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 errcode_t ext2fs_resize_array(unsigned long old_count, unsigned long count,
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 dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
struct ext2_inode *inode);
extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
#endif
/*
* 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
#if (__STDC_VERSION__ >= 199901L)
#define _INLINE_ inline
#else
#ifdef __GNUC__
#define _INLINE_ extern __inline__
#else /* For Watcom C */
#define _INLINE_ extern inline
#endif /* __GNUC__ */
#endif /* __STDC_VERSION__ >= 199901L */
#endif
#ifndef EXT2_CUSTOM_MEMORY_ROUTINES
#include <string.h>
/*
* Allocate memory. The 'ptr' arg must point to a pointer.
*/
_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
{
void *pp;
pp = malloc(size);
if (!pp)
return EXT2_ET_NO_MEMORY;
memcpy(ptr, &pp, sizeof (pp));
return 0;
}
_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
{
void *pp;
pp = malloc(size);
if (!pp)
return EXT2_ET_NO_MEMORY;
memset(pp, 0, size);
memcpy(ptr, &pp, sizeof(pp));
return 0;
}
_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size,
void *ptr)
{
if (count && (~0UL)/count < size)
return EXT2_ET_NO_MEMORY;
return ext2fs_get_mem(count*size, ptr);
}
_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
unsigned long size, void *ptr)
{
if (count && (~0UL)/count < size)
return EXT2_ET_NO_MEMORY;
return ext2fs_get_memzero((size_t)count * size, ptr);
}
/*
* Free memory. The 'ptr' arg must point to a pointer.
*/
_INLINE_ errcode_t ext2fs_free_mem(void *ptr)
{
void *p;
memcpy(&p, ptr, sizeof(p));
free(p);
p = 0;
memcpy(ptr, &p, sizeof(p));
return 0;
}
/*
* Resize memory. The 'ptr' arg must point to a pointer.
*/
_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
unsigned long size, void *ptr)
{
void *p;
/* Use "memcpy" for pointer assignments here to avoid problems
* with C99 strict type aliasing rules. */
memcpy(&p, ptr, sizeof(p));
p = realloc(p, size);
if (!p)
return EXT2_ET_NO_MEMORY;
memcpy(ptr, &p, sizeof(p));
return 0;
}
/*
* Resize array. The 'ptr' arg must point to a pointer.
*/
_INLINE_ errcode_t ext2fs_resize_array(unsigned long size,
unsigned long old_count,
unsigned long count, void *ptr)
{
unsigned long old_size;
errcode_t retval;
if (count && (~0UL)/count < size)
return EXT2_ET_NO_MEMORY;
size *= count;
old_size = size * old_count;
retval = ext2fs_resize_mem(old_size, size, ptr);
if (retval)
return retval;
if (size > old_size) {
void *p;
memcpy(&p, ptr, sizeof(p));
memset((char *)p + old_size, 0, size - old_size);
memcpy(ptr, &p, sizeof(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_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
{
return ext2fs_group_of_blk2(fs, blk);
}
/*
* Return the group # of an inode number
*/
_INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
{
return (ino - 1) / fs->super->s_inodes_per_group;
}
/*
* Return the first block (inclusive) in a group
*/
_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
{
return (blk_t) ext2fs_group_first_block2(fs, group);
}
/*
* Return the last block (inclusive) in a group
*/
_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
{
return (blk_t) ext2fs_group_last_block2(fs, group);
}
_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
struct ext2_inode *inode)
{
return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
}
_INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
{
int csum_size = 0;
if ((EXT2_SB(fs->super)->s_feature_ro_compat &
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) != 0)
csum_size = sizeof(struct ext2_dx_tail);
return blocks * ((fs->blocksize - (8 + csum_size)) /
sizeof(struct ext2_dx_entry));
}
/*
* This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
*/
_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
{
if (!a)
return 0;
return ((a - 1) / b) + 1;
}
_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
{
if (!a)
return 0;
return ((a - 1) / b) + 1;
}
_INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
{
return entry->name_len & 0xff;
}
_INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
{
entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
}
_INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
{
return entry->name_len >> 8;
}
_INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
{
entry->name_len = (entry->name_len & 0xff) | (type << 8);
}
_INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
{
/* It is always safe to convert large inode to a small inode */
return (struct ext2_inode *) large_inode;
}
_INLINE_ const struct ext2_inode *
ext2fs_const_inode(const struct ext2_inode_large * large_inode)
{
/* It is always safe to convert large inode to a small inode */
return (const struct ext2_inode *) large_inode;
}
#undef _INLINE_
#endif
/* htree levels for ext4 */
#define EXT4_HTREE_LEVEL_COMPAT 2
#define EXT4_HTREE_LEVEL 3
static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
{
if (ext2fs_has_feature_largedir(fs->super))
return EXT4_HTREE_LEVEL;
return EXT4_HTREE_LEVEL_COMPAT;
}
#ifdef __cplusplus
}
#endif
#endif /* _EXT2FS_EXT2FS_H */