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Edit File : ext2fs.h \| Size : 70.71 KB
/* * 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(countsize, 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 */ Back

Edit File : ext2fs.h | Size : 70.71 KB

/*
 * 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_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 */

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