/* * 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% */ /* * Non-GNU C compilers won't necessarily understand inline */ #ifndef __GNUC__ #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 #include #include typedef __u32 blk_t; typedef unsigned int dgrp_t; #include "et/com_err.h" #include "ext2fs/io.h" #include "ext2fs/ext2_err.h" 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 /* * 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; unsigned long group_desc_count; unsigned long desc_blocks; struct ext2_group_desc * group_desc; int inode_blocks_per_group; ext2fs_inode_bitmap inode_map; ext2fs_block_bitmap block_map; errcode_t (*get_blocks)(ext2_filsys fs, ino_t ino, blk_t *blocks); errcode_t (*check_directory)(ext2_filsys fs, ino_t ino); errcode_t (*write_bitmaps)(ext2_filsys fs); errcode_t (*read_inode)(ext2_filsys fs, ino_t ino, struct ext2_inode *inode); errcode_t (*write_inode)(ext2_filsys fs, ino_t ino, struct ext2_inode *inode); badblocks_list badblocks; ext2_dblist dblist; __u32 stride; /* for mke2fs */ /* * Reserved for future expansion */ __u32 reserved[11]; /* * Reserved for the use of the calling application. */ void * private; /* * Inode cache */ struct ext2_inode_cache *icache; }; #include "ext2fs/bitops.h" /* * 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. */ #define BLOCK_FLAG_APPEND 1 #define BLOCK_FLAG_HOLE 1 #define BLOCK_FLAG_DEPTH_TRAVERSE 2 #define BLOCK_FLAG_DATA_ONLY 4 /* * 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) /* * Flags for ext2fs_move_blocks */ #define EXT2_BMOVE_GET_DBLIST 0x0001 #define EXT2_BMOVE_DEBUG 0x0002 /* * 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; /* * 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_reserved[206]; /* Padding to the end of the block */ }; /* * Feature set definitions (that might not be in ext2_fs.h * (was EXT2_COMPAT_SPARSE_SUPER) */ #ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 #endif #define EXT2_LIB_FEATURE_COMPAT_SUPP 0 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP 0 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* * 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); /* alloc_tables.c */ extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, int group, ext2fs_block_bitmap bmap); /* badblocks.c */ extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, int size); extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, blk_t blk); extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, blk_t blk); extern errcode_t ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, ext2_badblocks_iterate *ret); extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, blk_t *blk); extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, ext2_badblocks_list *dest); /* bb_compat */ extern errcode_t badblocks_list_create(badblocks_list *ret, int size); extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); extern int badblocks_list_test(badblocks_list bb, blk_t blk); extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, badblocks_iterate *ret); extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); extern void badblocks_list_iterate_end(badblocks_iterate iter); extern void badblocks_list_free(badblocks_list bb); /* bb_inode.c */ extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, ext2_badblocks_list bb_list); /* bitmaps.c */ extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, __u32 end, __u32 real_end, const char *descr, ext2fs_generic_bitmap *ret); extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, const char *descr, ext2fs_block_bitmap *ret); extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, const char *descr, ext2fs_inode_bitmap *ret); extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, ino_t end, ino_t *oend); extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, blk_t end, blk_t *oend); extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); /* block.c */ extern errcode_t ext2fs_block_iterate(ext2_filsys fs, ino_t ino, int flags, char *block_buf, int (*func)(ext2_filsys fs, blk_t *blocknr, int blockcnt, void *private), void *private); errcode_t ext2fs_block_iterate2(ext2_filsys fs, ino_t ino, int flags, char *block_buf, int (*func)(ext2_filsys fs, blk_t *blocknr, int blockcnt, blk_t ref_blk, int ref_offset, void *private), void *private); /* bmove.c */ extern errcode_t ext2fs_move_blocks(ext2_filsys fs, ext2fs_block_bitmap reserve, ext2fs_block_bitmap alloc_map, int flags); /* 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 *private), void *private); 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 *private), void *private); /* 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 *private), void *private); /* private to library */ extern int ext2fs_process_dir_block(ext2_filsys fs, blk_t *blocknr, int blockcnt, void *private); /* 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); /* freefs.c */ extern void ext2fs_free(ext2_filsys fs); extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); extern void ext2fs_free_dblist(ext2_dblist dblist); extern void ext2fs_badblocks_list_free(badblocks_list bb); /* getsize.c */ extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, blk_t *retblocks); /* initialize.c */ extern errcode_t ext2fs_initialize(const char *name, int flags, struct ext2_super_block *param, io_manager manager, ext2_filsys *ret_fs); /* inode.c */ extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, ext2_inode_scan *ret_scan); extern void ext2fs_close_inode_scan(ext2_inode_scan scan); extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ino_t *ino, struct ext2_inode *inode); extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, int group); extern void ext2fs_set_inode_callback (ext2_inode_scan scan, errcode_t (*done_group)(ext2_filsys fs, ext2_inode_scan scan, dgrp_t group, void * private), void *done_group_data); extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, int clear_flags); extern errcode_t ext2fs_read_inode (ext2_filsys fs, ino_t ino, struct ext2_inode * inode); extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino, struct ext2_inode * inode); extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks); extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino); /* icount.c */ extern void ext2fs_free_icount(ext2_icount_t icount); extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size, ext2_icount_t hint, ext2_icount_t *ret); extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size, ext2_icount_t *ret); extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino, __u16 *ret); extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino, __u16 *ret); extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino, __u16 *ret); extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino, __u16 count); extern ino_t ext2fs_get_icount_size(ext2_icount_t icount); errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); /* ismounted.c */ extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); /* namei.c */ extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name, int namelen, char *buf, ino_t *inode); extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd, const char *name, ino_t *inode); errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd, const char *name, ino_t *inode); extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd, ino_t inode, ino_t *res_inode); /* native.c */ int ext2fs_native_flag(void); /* newdir.c */ extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino, ino_t parent_ino, char **block); /* mkdir.c */ extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum, const char *name); /* openfs.c */ extern errcode_t ext2fs_open(const char *name, int flags, int superblock, int block_size, io_manager manager, ext2_filsys *ret_fs); /* get_pathname.c */ extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino, char **name); /* link.c */ errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name, ino_t ino, int flags); errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name, ino_t ino, int flags); /* read_bb.c */ extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, ext2_badblocks_list *bb_list); /* read_bb_file.c */ extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, ext2_badblocks_list *bb_list, void (*invalid)(ext2_filsys fs, blk_t blk)); /* rs_bitmap.c */ extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, __u32 new_real_end, ext2fs_generic_bitmap bmap); extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, ext2fs_inode_bitmap bmap); extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, ext2fs_block_bitmap bmap); extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, ext2fs_generic_bitmap *dest); /* swapfs.c */ extern void ext2fs_swap_super(struct ext2_super_block * super); extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, struct ext2_inode *f, int hostorder); /* valid_blk.c */ extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); /* version.c */ extern int ext2fs_parse_version_string(const char *ver_string); extern int ext2fs_get_library_version(const char **ver_string, const char **date_string); /* inline functions */ extern 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 #define _INLINE_ extern __inline__ #endif /* * 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