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Edit File: ext2fs.h
/* * 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 #ifndef __nonstring #ifdef __has_attribute #if __has_attribute(__nonstring__) #define __nonstring __attribute__((__nonstring__)) #else #define __nonstring #endif /* __has_attribute(__nonstring__) */ #else # define __nonstring #endif /* __has_attribute */ #endif /* __nonstring */ #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 struct ext2fs_struct_generic_bitmap_base { errcode_t magic; ext2_filsys fs; }; typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_generic_bitmap; typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_inode_bitmap; typedef struct ext2fs_struct_generic_bitmap_base *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 #define EXT2_FLAG_THREADS 0x4000000 /* * 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 */ /* * Normal journal area size to fast commit area size ratio. This is used to * set default size of fast commit area. */ #define EXT2_JOURNAL_TO_FC_BLKS_RATIO 64 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; /* * Reserved for future expansion */ __u32 reserved[5]; /* * 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; const struct ext2fs_nls_table *encoding; }; #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|\ EXT4_FEATURE_COMPAT_FAST_COMMIT|\ EXT4_FEATURE_COMPAT_STABLE_INODES) #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 /* * flags for ext2fs_rw_bitmaps() */ #define EXT2FS_BITMAPS_WRITE 0x0001 #define EXT2FS_BITMAPS_BLOCK 0x0002 #define EXT2FS_BITMAPS_INODE 0x0004 #define EXT2FS_BITMAPS_VALID_FLAGS 0x0007 /* * 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_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_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_dx_csum(ext2_filsys fs, ext2_ino_t inum, struct ext2_dir_entry *dirent, __u32 *crc, struct ext2_dx_tail **ret_t); 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 __u32 ext2fs_ext_attr_hash_entry_signed(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_ext_attr_hash_entry3(ext2_filsys fs, struct ext2_ext_attr_entry *entry, void *data, __u32 *hash, __u32 *signed_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); extern errcode_t ext2fs_count_blocks(ext2_filsys fs, ext2_ino_t ino, struct ext2_inode *inode, blk64_t *ret_count); extern errcode_t ext2fs_decode_extent(struct ext2fs_extent *to, void *from, int len); /* 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); errcode_t ext2fs_count_used_clusters(ext2_filsys fs, blk64_t start, blk64_t end, blk64_t *out); /* 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); extern errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs, int super_only); /* 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); extern int ext2fs_check_encoded_name(const struct ext2fs_nls_table *table, char *s, size_t len, char **pos); extern int ext2fs_casefold_cmp(const struct ext2fs_nls_table *table, const unsigned char *str1, size_t len1, const unsigned char *str2, size_t len2); /* mkdir.c */ extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, const char *name); /* mkjournal.c */ struct ext2fs_journal_params { blk_t num_journal_blocks; blk_t num_fc_blocks; }; extern errcode_t ext2fs_get_journal_params( struct ext2fs_journal_params *params, ext2_filsys fs); 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_create_journal_superblock2(ext2_filsys fs, struct ext2fs_journal_params *params, 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 errcode_t ext2fs_add_journal_inode3(ext2_filsys fs, struct ext2fs_journal_params *params, 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 */ #define EXT2FS_UNLINK_FORCE 0x1 /* Forcefully unlink even if * the inode number doesn't * match the dirent */ 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); /* rw_bitmaps.c */ extern errcode_t ext2fs_rw_bitmaps(ext2_filsys fs, int flags, int num_threads); extern errcode_t ext2fs_read_bitmaps(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_write_bitmaps(ext2_filsys fs); extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); extern errcode_t ext2fs_write_block_bitmap (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 */