/* * ext2fs.h --- ext2fs * * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. * * %Begin-Header% * This file may be redistributed under the terms of the GNU Public * License. * %End-Header% */ #ifndef _EXT2FS_EXT2FS_H #define _EXT2FS_EXT2FS_H #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 /* * The last ext2fs revision level that this version of the library is * able to support. */ #define EXT2_LIB_CURRENT_REV 0 #ifdef HAVE_SYS_TYPES_H #include #endif #include #if EXT2_FLAT_INCLUDES #include "e2_types.h" #else #include #if !defined(__GNUC__) || defined(__STRICT_ANSI__) /* asm/types.h already defines __s64 and __u64 otherwise */ #if SIZEOF_LONG == 8 typedef __signed__ long __s64; typedef unsigned long __u64; #elif SIZEOF_LONG_LONG == 8 || \ defined(__GNUC__) && (((~0UL) == 0xffffffff) || defined(__i386__)) typedef __signed__ long long __s64; typedef unsigned long long __u64; #endif /* SIZEOF_LONG == 8 */ #endif #endif /* EXT2_FLAT_INCLUDES */ typedef __u32 blk_t; typedef __u32 dgrp_t; typedef __u32 ext2_off_t; typedef __s64 e2_blkcnt_t; #if EXT2_FLAT_INCLUDES #include "com_err.h" #include "ext2_io.h" #include "ext2_err.h" #else #include "et/com_err.h" #include "ext2fs/ext2_io.h" #include "ext2fs/ext2_err.h" #endif /* * Portability help for Microsoft Visual C++ */ #ifdef _MSC_VER #define EXT2_QSORT_TYPE int __cdecl #else #define EXT2_QSORT_TYPE int #endif typedef struct struct_ext2_filsys *ext2_filsys; struct ext2fs_struct_generic_bitmap { errcode_t magic; ext2_filsys fs; __u32 start, end; __u32 real_end; char * description; char * bitmap; errcode_t base_error_code; __u32 reserved[7]; }; #define EXT2FS_MARK_ERROR 0 #define EXT2FS_UNMARK_ERROR 1 #define EXT2FS_TEST_ERROR 2 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; #ifdef EXT2_DYNAMIC_REV #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) #else #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode) #endif /* * badblocks list definitions */ typedef struct ext2_struct_badblocks_list *ext2_badblocks_list; typedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate; /* old */ typedef struct ext2_struct_badblocks_list *badblocks_list; typedef struct ext2_struct_badblocks_iterate *badblocks_iterate; #define BADBLOCKS_FLAG_DIRTY 1 /* * ext2_dblist structure and abstractions (see dblist.c) */ struct ext2_db_entry { ino_t ino; blk_t blk; int blockcnt; }; typedef struct ext2_struct_dblist *ext2_dblist; #define DBLIST_ABORT 1 /* * ext2_fileio definitions */ #define EXT2_FILE_WRITE 0x0001 #define EXT2_FILE_CREATE 0x0002 #define EXT2_FILE_MASK 0x00FF #define EXT2_FILE_BUF_DIRTY 0x4000 #define EXT2_FILE_BUF_VALID 0x2000 typedef struct ext2_file *ext2_file_t; #define EXT2_SEEK_SET 0 #define EXT2_SEEK_CUR 1 #define EXT2_SEEK_END 2 /* * Flags for the ext2_filsys structure */ #define EXT2_FLAG_RW 0x01 #define EXT2_FLAG_CHANGED 0x02 #define EXT2_FLAG_DIRTY 0x04 #define EXT2_FLAG_VALID 0x08 #define EXT2_FLAG_IB_DIRTY 0x10 #define EXT2_FLAG_BB_DIRTY 0x20 #define EXT2_FLAG_SWAP_BYTES 0x40 #define EXT2_FLAG_SWAP_BYTES_READ 0x80 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 #define EXT2_FLAG_MASTER_SB_ONLY 0x200 #define EXT2_FLAG_FORCE 0x400 /* * Special flag in the ext2 inode i_flag field that means that this is * a new inode. (So that ext2_write_inode() can clear extra fields.) */ #define EXT2_NEW_INODE_FL 0x80000000 struct struct_ext2_filsys { errcode_t magic; io_channel io; int flags; char * device_name; struct ext2_super_block * super; int blocksize; int fragsize; dgrp_t group_desc_count; unsigned long desc_blocks; struct ext2_group_desc * group_desc; int inode_blocks_per_group; ext2fs_inode_bitmap inode_map; ext2fs_block_bitmap block_map; errcode_t (*get_blocks)(ext2_filsys fs, ino_t ino, blk_t *blocks); errcode_t (*check_directory)(ext2_filsys fs, ino_t ino); errcode_t (*write_bitmaps)(ext2_filsys fs); errcode_t (*read_inode)(ext2_filsys fs, ino_t ino, struct ext2_inode *inode); errcode_t (*write_inode)(ext2_filsys fs, ino_t ino, struct ext2_inode *inode); badblocks_list badblocks; ext2_dblist dblist; __u32 stride; /* for mke2fs */ struct ext2_super_block * orig_super; /* * Reserved for future expansion */ __u32 reserved[10]; /* * Reserved for the use of the calling application. */ void * priv_data; /* * Inode cache */ struct ext2_inode_cache *icache; }; #if EXT2_FLAT_INCLUDES #include "e2_bitops.h" #else #include "ext2fs/bitops.h" #endif /* * Return flags for the block iterator functions */ #define BLOCK_CHANGED 1 #define BLOCK_ABORT 2 #define BLOCK_ERROR 4 /* * Block interate flags * * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator * function should be called on blocks where the block number is zero. * This is used by ext2fs_expand_dir() to be able to add a new block * to an inode. It can also be used for programs that want to be able * to deal with files that contain "holes". * * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the * indirect, doubly indirect, etc. blocks should be called after all * of the blocks containined in the indirect blocks are processed. * This is useful if you are going to be deallocating blocks from an * inode. * * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be * called for data blocks only. * * BLOCK_FLAG_NO_LARGE is for internal use only. It informs * ext2fs_block_iterate2 that large files won't be accepted. */ #define BLOCK_FLAG_APPEND 1 #define BLOCK_FLAG_HOLE 1 #define BLOCK_FLAG_DEPTH_TRAVERSE 2 #define BLOCK_FLAG_DATA_ONLY 4 #define BLOCK_FLAG_NO_LARGE 0x1000 /* * Magic "block count" return values for the block iterator function. */ #define BLOCK_COUNT_IND (-1) #define BLOCK_COUNT_DIND (-2) #define BLOCK_COUNT_TIND (-3) #define BLOCK_COUNT_TRANSLATOR (-4) #if 0 /* * Flags for ext2fs_move_blocks */ #define EXT2_BMOVE_GET_DBLIST 0x0001 #define EXT2_BMOVE_DEBUG 0x0002 #endif /* * Return flags for the directory iterator functions */ #define DIRENT_CHANGED 1 #define DIRENT_ABORT 2 #define DIRENT_ERROR 3 /* * Directory iterator flags */ #define DIRENT_FLAG_INCLUDE_EMPTY 1 #define DIRENT_DOT_FILE 1 #define DIRENT_DOT_DOT_FILE 2 #define DIRENT_OTHER_FILE 3 /* * Inode scan definitions */ typedef struct ext2_struct_inode_scan *ext2_inode_scan; /* * ext2fs_scan flags */ #define EXT2_SF_CHK_BADBLOCKS 0x0001 #define EXT2_SF_BAD_INODE_BLK 0x0002 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 /* * ext2fs_check_if_mounted flags */ #define EXT2_MF_MOUNTED 1 #define EXT2_MF_ISROOT 2 #define EXT2_MF_READONLY 4 /* * Ext2/linux mode flags. We define them here so that we don't need * to depend on the OS's sys/stat.h, since we may be compiling on a * non-Linux system. */ #define LINUX_S_IFMT 00170000 #define LINUX_S_IFSOCK 0140000 #define LINUX_S_IFLNK 0120000 #define LINUX_S_IFREG 0100000 #define LINUX_S_IFBLK 0060000 #define LINUX_S_IFDIR 0040000 #define LINUX_S_IFCHR 0020000 #define LINUX_S_IFIFO 0010000 #define LINUX_S_ISUID 0004000 #define LINUX_S_ISGID 0002000 #define LINUX_S_ISVTX 0001000 #define LINUX_S_IRWXU 00700 #define LINUX_S_IRUSR 00400 #define LINUX_S_IWUSR 00200 #define LINUX_S_IXUSR 00100 #define LINUX_S_IRWXG 00070 #define LINUX_S_IRGRP 00040 #define LINUX_S_IWGRP 00020 #define LINUX_S_IXGRP 00010 #define LINUX_S_IRWXO 00007 #define LINUX_S_IROTH 00004 #define LINUX_S_IWOTH 00002 #define LINUX_S_IXOTH 00001 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) /* * ext2_icount_t abstraction */ #define EXT2_ICOUNT_OPT_INCREMENT 0x01 typedef struct ext2_icount *ext2_icount_t; /* * Flags for ext2fs_bmap */ #define BMAP_ALLOC 1 /* * 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) /* * The ext2fs library private definition of the ext2 superblock, so we * don't have to depend on the kernel's definition of the superblock, * which might not have the latest features. */ struct ext2fs_sb { __u32 s_inodes_count; /* Inodes count */ __u32 s_blocks_count; /* Blocks count */ __u32 s_r_blocks_count; /* Reserved blocks count */ __u32 s_free_blocks_count; /* Free blocks count */ __u32 s_free_inodes_count; /* Free inodes count */ __u32 s_first_data_block; /* First Data Block */ __u32 s_log_block_size; /* Block size */ __s32 s_log_frag_size; /* Fragment size */ __u32 s_blocks_per_group; /* # Blocks per group */ __u32 s_frags_per_group; /* # Fragments per group */ __u32 s_inodes_per_group; /* # Inodes per group */ __u32 s_mtime; /* Mount time */ __u32 s_wtime; /* Write time */ __u16 s_mnt_count; /* Mount count */ __s16 s_max_mnt_count; /* Maximal mount count */ __u16 s_magic; /* Magic signature */ __u16 s_state; /* File system state */ __u16 s_errors; /* Behaviour when detecting errors */ __u16 s_minor_rev_level; /* minor revision level */ __u32 s_lastcheck; /* time of last check */ __u32 s_checkinterval; /* max. time between checks */ __u32 s_creator_os; /* OS */ __u32 s_rev_level; /* Revision level */ __u16 s_def_resuid; /* Default uid for reserved blocks */ __u16 s_def_resgid; /* Default gid for reserved blocks */ /* * These fields are for EXT2_DYNAMIC_REV superblocks only. * * Note: the difference between the compatible feature set and * the incompatible feature set is that if there is a bit set * in the incompatible feature set that the kernel doesn't * know about, it should refuse to mount the filesystem. * * e2fsck's requirements are more strict; if it doesn't know * about a feature in either the compatible or incompatible * feature set, it must abort and not try to meddle with * things it doesn't understand... */ __u32 s_first_ino; /* First non-reserved inode */ __u16 s_inode_size; /* size of inode structure */ __u16 s_block_group_nr; /* block group # of this superblock */ __u32 s_feature_compat; /* compatible feature set */ __u32 s_feature_incompat; /* incompatible feature set */ __u32 s_feature_ro_compat; /* readonly-compatible feature set */ __u8 s_uuid[16]; /* 128-bit uuid for volume */ char s_volume_name[16]; /* volume name */ char s_last_mounted[64]; /* directory where last mounted */ __u32 s_algorithm_usage_bitmap; /* For compression */ /* * Performance hints. Directory preallocation should only * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on. */ __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ __u16 s_padding1; /* * Journaling support. */ __u8 s_journal_uuid[16]; /* uuid of journal superblock */ __u32 s_journal_inum; /* inode number of journal file */ __u32 s_journal_dev; /* device number of journal file */ __u32 s_last_orphan; /* start of list of inodes to delete */ __u32 s_reserved[197]; /* Padding to the end of the block */ }; #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) /* * Feature set definitions (that might not be in ext2_fs.h */ #ifndef EXT2_FEATURE_COMPAT_DIR_PREALLOC #define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 #endif #ifndef EXT2_FEATURE_COMPAT_IMAGIC_INODES /* for AFS, etc. */ #define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002 #define EXT2_IMAGIC_FL 0x00002000 #endif #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 #endif #ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 #endif #ifndef EXT2_FEATURE_RO_COMPAT_LARGE_FILE #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 #define i_size_high i_dir_acl #endif #ifndef EXT2_FEATURE_RO_COMPAT_BTREE_DIR #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 #endif #ifndef EXT2_FEATURE_INCOMPAT_COMPRESSION #define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 #endif #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 #endif #ifndef EXT3_FEATURE_INCOMPAT_RECOVER #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ #endif #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ EXT3_FEATURE_COMPAT_HAS_JOURNAL) /* This #ifdef is temporary until compression is fully supported */ #ifdef ENABLE_COMPRESSION #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL /* If the below warning bugs you, then have `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your environment at configure time. */ #warning "Compression support is experimental" #endif #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ EXT2_FEATURE_INCOMPAT_COMPRESSION|\ EXT3_FEATURE_INCOMPAT_RECOVER) #else #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ EXT3_FEATURE_INCOMPAT_RECOVER) #endif #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ EXT2_FEATURE_RO_COMPAT_LARGE_FILE) /* * function prototypes */ /* alloc.c */ extern errcode_t ext2fs_new_inode(ext2_filsys fs, ino_t dir, int mode, ext2fs_inode_bitmap map, ino_t *ret); extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, ext2fs_block_bitmap map, blk_t *ret); extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish, int num, ext2fs_block_bitmap map, blk_t *ret); extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, char *block_buf, blk_t *ret); /* alloc_tables.c */ extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, ext2fs_block_bitmap bmap); /* badblocks.c */ extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, int size); extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, blk_t blk); extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, blk_t blk); extern errcode_t ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, ext2_badblocks_iterate *ret); extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, blk_t *blk); extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, ext2_badblocks_list *dest); extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, ext2_badblocks_list bb2); /* bb_compat */ extern errcode_t badblocks_list_create(badblocks_list *ret, int size); extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); extern int badblocks_list_test(badblocks_list bb, blk_t blk); extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, badblocks_iterate *ret); extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); extern void badblocks_list_iterate_end(badblocks_iterate iter); extern void badblocks_list_free(badblocks_list bb); /* bb_inode.c */ extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, ext2_badblocks_list bb_list); /* bitmaps.c */ extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, __u32 end, __u32 real_end, const char *descr, ext2fs_generic_bitmap *ret); extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, const char *descr, ext2fs_block_bitmap *ret); extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, const char *descr, ext2fs_inode_bitmap *ret); extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, ino_t end, ino_t *oend); extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, blk_t end, blk_t *oend); extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); /* block.c */ extern errcode_t ext2fs_block_iterate(ext2_filsys fs, ino_t ino, int flags, char *block_buf, int (*func)(ext2_filsys fs, blk_t *blocknr, int blockcnt, void *priv_data), void *priv_data); errcode_t ext2fs_block_iterate2(ext2_filsys fs, ino_t ino, int flags, char *block_buf, int (*func)(ext2_filsys fs, blk_t *blocknr, e2_blkcnt_t blockcnt, blk_t ref_blk, int ref_offset, void *priv_data), void *priv_data); /* bmap.c */ extern errcode_t ext2fs_bmap(ext2_filsys fs, ino_t ino, struct ext2_inode *inode, char *block_buf, int bmap_flags, blk_t block, blk_t *phys_blk); #if 0 /* bmove.c */ extern errcode_t ext2fs_move_blocks(ext2_filsys fs, ext2fs_block_bitmap reserve, ext2fs_block_bitmap alloc_map, int flags); #endif /* check_desc.c */ extern errcode_t ext2fs_check_desc(ext2_filsys fs); /* closefs.c */ extern errcode_t ext2fs_close(ext2_filsys fs); extern errcode_t ext2fs_flush(ext2_filsys fs); extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); /* cmp_bitmaps.c */ extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, ext2fs_block_bitmap bm2); extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, ext2fs_inode_bitmap bm2); /* dblist.c */ extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ino_t *ret_num_dirs); extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ino_t ino, blk_t blk, int blockcnt); extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, void *priv_data), void *priv_data); extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ino_t ino, blk_t blk, int blockcnt); extern errcode_t ext2fs_copy_dblist(ext2_dblist src, ext2_dblist *dest); extern int ext2fs_dblist_count(ext2_dblist dblist); /* dblist_dir.c */ extern errcode_t ext2fs_dblist_dir_iterate(ext2_dblist dblist, int flags, char *block_buf, int (*func)(ino_t dir, int entry, struct ext2_dir_entry *dirent, int offset, int blocksize, char *buf, void *priv_data), void *priv_data); /* dirblock.c */ extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, void *buf); extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, void *buf); /* dir_iterate.c */ extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, ino_t dir, int flags, char *block_buf, int (*func)(struct ext2_dir_entry *dirent, int offset, int blocksize, char *buf, void *priv_data), void *priv_data); /* dupfs.c */ extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); /* expanddir.c */ extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ino_t dir); /* fileio.c */ extern errcode_t ext2fs_file_open(ext2_filsys fs, ino_t ino, int flags, ext2_file_t *ret); extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); extern errcode_t ext2fs_file_close(ext2_file_t file); extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, unsigned int wanted, unsigned int *got); extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf, unsigned int nbytes, unsigned int *written); extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, int whence, ext2_off_t *ret_pos); extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); /* finddev.c */ extern char *ext2fs_find_block_device(dev_t device); /* freefs.c */ extern void ext2fs_free(ext2_filsys fs); extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); extern void ext2fs_free_dblist(ext2_dblist dblist); extern void ext2fs_badblocks_list_free(badblocks_list bb); /* getsize.c */ extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, blk_t *retblocks); /* 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); /* initialize.c */ extern errcode_t ext2fs_initialize(const char *name, int flags, struct ext2_super_block *param, io_manager manager, ext2_filsys *ret_fs); /* inode.c */ extern errcode_t ext2fs_flush_icache(ext2_filsys fs); extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, ext2_inode_scan *ret_scan); extern void ext2fs_close_inode_scan(ext2_inode_scan scan); extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ino_t *ino, struct ext2_inode *inode); extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, int group); extern void ext2fs_set_inode_callback (ext2_inode_scan scan, errcode_t (*done_group)(ext2_filsys fs, ext2_inode_scan scan, dgrp_t group, void * priv_data), void *done_group_data); extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, int clear_flags); extern errcode_t ext2fs_read_inode (ext2_filsys fs, ino_t ino, struct ext2_inode * inode); extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino, struct ext2_inode * inode); extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks); extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino); /* icount.c */ extern void ext2fs_free_icount(ext2_icount_t icount); extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size, ext2_icount_t hint, ext2_icount_t *ret); extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size, ext2_icount_t *ret); extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino, __u16 *ret); extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino, __u16 *ret); extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino, __u16 *ret); extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino, __u16 count); extern ino_t ext2fs_get_icount_size(ext2_icount_t icount); errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); /* ismounted.c */ extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); /* namei.c */ extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name, int namelen, char *buf, ino_t *inode); extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd, const char *name, ino_t *inode); errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd, const char *name, ino_t *inode); extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd, ino_t inode, ino_t *res_inode); /* native.c */ int ext2fs_native_flag(void); /* newdir.c */ extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino, ino_t parent_ino, char **block); /* mkdir.c */ extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum, const char *name); /* mkjournal.c */ extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, char *device, blk_t size); extern errcode_t ext2fs_add_journal_fs(ext2_filsys fs, blk_t size); /* openfs.c */ extern errcode_t ext2fs_open(const char *name, int flags, int superblock, int block_size, io_manager manager, ext2_filsys *ret_fs); /* get_pathname.c */ extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino, char **name); /* link.c */ errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name, ino_t ino, int flags); errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name, ino_t ino, int flags); /* read_bb.c */ extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, ext2_badblocks_list *bb_list); /* read_bb_file.c */ extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, ext2_badblocks_list *bb_list, void *private, void (*invalid)(ext2_filsys fs, blk_t blk, char *badstr, void *private)); extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, ext2_badblocks_list *bb_list, void (*invalid)(ext2_filsys fs, blk_t blk)); /* rs_bitmap.c */ extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, __u32 new_real_end, ext2fs_generic_bitmap bmap); extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, ext2fs_inode_bitmap bmap); extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, ext2fs_block_bitmap bmap); extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, ext2fs_generic_bitmap *dest); /* swapfs.c */ extern void ext2fs_swap_super(struct ext2_super_block * super); extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, struct ext2_inode *f, int hostorder); /* valid_blk.c */ extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); /* version.c */ extern int ext2fs_parse_version_string(const char *ver_string); extern int ext2fs_get_library_version(const char **ver_string, const char **date_string); /* inline functions */ extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr); extern errcode_t ext2fs_free_mem(void **ptr); extern errcode_t ext2fs_resize_mem(unsigned long old_size, unsigned long size, void **ptr); extern void ext2fs_mark_super_dirty(ext2_filsys fs); extern void ext2fs_mark_changed(ext2_filsys fs); extern int ext2fs_test_changed(ext2_filsys fs); extern void ext2fs_mark_valid(ext2_filsys fs); extern void ext2fs_unmark_valid(ext2_filsys fs); extern int ext2fs_test_valid(ext2_filsys fs); extern void ext2fs_mark_ib_dirty(ext2_filsys fs); extern void ext2fs_mark_bb_dirty(ext2_filsys fs); extern int ext2fs_test_ib_dirty(ext2_filsys fs); extern int ext2fs_test_bb_dirty(ext2_filsys fs); extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); extern int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino); /* * The actual inlined functions definitions themselves... * * If NO_INLINE_FUNCS is defined, then we won't try to do inline * functions at all! */ #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) #ifdef INCLUDE_INLINE_FUNCS #define _INLINE_ extern #else #ifdef __GNUC__ #define _INLINE_ extern __inline__ #else /* For Watcom C */ #define _INLINE_ extern inline #endif #endif #ifndef EXT2_CUSTOM_MEMORY_ROUTINES /* * Allocate memory */ _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr) { *ptr = malloc(size); if (!*ptr) return EXT2_ET_NO_MEMORY; return 0; } /* * Free memory */ _INLINE_ errcode_t ext2fs_free_mem(void **ptr) { free(*ptr); *ptr = 0; return 0; } /* * Resize memory */ _INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size, unsigned long size, void **ptr) { void *p; p = realloc(*ptr, size); if (!p) return EXT2_ET_NO_MEMORY; *ptr = p; return 0; } #endif /* Custom memory routines */ /* * Mark a filesystem superblock as dirty */ _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) { fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; } /* * Mark a filesystem as changed */ _INLINE_ void ext2fs_mark_changed(ext2_filsys fs) { fs->flags |= EXT2_FLAG_CHANGED; } /* * Check to see if a filesystem has changed */ _INLINE_ int ext2fs_test_changed(ext2_filsys fs) { return (fs->flags & EXT2_FLAG_CHANGED); } /* * Mark a filesystem as valid */ _INLINE_ void ext2fs_mark_valid(ext2_filsys fs) { fs->flags |= EXT2_FLAG_VALID; } /* * Mark a filesystem as NOT valid */ _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) { fs->flags &= ~EXT2_FLAG_VALID; } /* * Check to see if a filesystem is valid */ _INLINE_ int ext2fs_test_valid(ext2_filsys fs) { return (fs->flags & EXT2_FLAG_VALID); } /* * Mark the inode bitmap as dirty */ _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) { fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; } /* * Mark the block bitmap as dirty */ _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) { fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; } /* * Check to see if a filesystem's inode bitmap is dirty */ _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) { return (fs->flags & EXT2_FLAG_IB_DIRTY); } /* * Check to see if a filesystem's block bitmap is dirty */ _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) { return (fs->flags & EXT2_FLAG_BB_DIRTY); } /* * Return the group # of a block */ _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) { return (blk - fs->super->s_first_data_block) / fs->super->s_blocks_per_group; } /* * Return the group # of an inode number */ _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino) { return (ino - 1) / fs->super->s_inodes_per_group; } #undef _INLINE_ #endif #ifdef __cplusplus } #endif #endif /* _EXT2FS_EXT2FS_H */