| /* |
| * 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 __GNUC__ |
| #define EXT2FS_ATTR(x) __attribute__(x) |
| #else |
| #define EXT2FS_ATTR(x) |
| #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 |
| |
| /* |
| * Build in support for byte-swapping filesystems if we the feature |
| * has been configured or if we're being built on a CPU architecture |
| * with a non-native byte order. |
| */ |
| #if defined(ENABLE_SWAPFS) || defined(WORDS_BIGENDIAN) |
| #define EXT2FS_ENABLE_SWAPFS |
| #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 EXT2_DYNAMIC_REV |
| |
| #ifdef HAVE_SYS_TYPES_H |
| #include <sys/types.h> |
| #endif |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.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 ext2_ino_t; |
| typedef __u32 blk_t; |
| typedef __u32 dgrp_t; |
| typedef __u32 ext2_off_t; |
| typedef __s64 e2_blkcnt_t; |
| typedef __u32 ext2_dirhash_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; |
| |
| #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_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 |
| |
| /* |
| * 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 |
| * |
| * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock |
| */ |
| #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 |
| |
| 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 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, 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; |
| /* |
| * Reserved for future expansion |
| */ |
| __u32 reserved[7]; |
| |
| /* |
| * Reserved for the use of the calling application. |
| */ |
| void * priv_data; |
| |
| /* |
| * Inode cache |
| */ |
| struct ext2_inode_cache *icache; |
| io_channel image_io; |
| }; |
| |
| #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_DEPTH_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 |
| |
| /* |
| * 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_DOT_FILE 1 |
| #define DIRENT_DOT_DOT_FILE 2 |
| #define DIRENT_OTHER_FILE 3 |
| #define DIRENT_DELETED_FILE 4 |
| |
| /* |
| * 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 |
| |
| /* |
| * 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 |
| |
| typedef struct ext2_icount *ext2_icount_t; |
| |
| /* |
| * Flags for ext2fs_bmap |
| */ |
| #define BMAP_ALLOC 0x0001 |
| #define BMAP_SET 0x0002 |
| |
| /* |
| * 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) |
| |
| |
| /* |
| * For ext2 compression support |
| */ |
| #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) |
| #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) |
| |
| /* |
| * 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_LAZY_BG|\ |
| EXT2_FEATURE_COMPAT_EXT_ATTR) |
| |
| /* 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_JOURNAL_DEV|\ |
| EXT2_FEATURE_INCOMPAT_META_BG|\ |
| EXT3_FEATURE_INCOMPAT_RECOVER) |
| #else |
| #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ |
| EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ |
| EXT2_FEATURE_INCOMPAT_META_BG|\ |
| EXT3_FEATURE_INCOMPAT_RECOVER) |
| #endif |
| #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ |
| EXT2_FEATURE_RO_COMPAT_LARGE_FILE) |
| |
| /* |
| * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed |
| * to ext2fs_openfs() |
| */ |
| #define EXT2_LIB_SOFTSUPP_INCOMPAT (EXT3_FEATURE_INCOMPAT_EXTENTS) |
| #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ |
| EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ |
| EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ |
| EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) |
| |
| /* |
| * function prototypes |
| */ |
| |
| /* alloc.c */ |
| 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_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_sb.c */ |
| extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, |
| dgrp_t group, |
| ext2fs_block_bitmap bmap); |
| |
| /* 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); |
| |
| /* 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 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, |
| 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 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, |
| 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); |
| |
| /* 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); |
| |
| |
| #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); |
| 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); |
| |
| /* 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, ext2_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, ext2_ino_t ino, |
| blk_t blk, int blockcnt); |
| extern void ext2fs_dblist_sort(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_set_dir_block(ext2_dblist dblist, ext2_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); |
| extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, |
| struct ext2_db_entry **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); |
| |
| /* 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_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); |
| |
| /* 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); |
| |
| |
| /* dir_iterate.c */ |
| 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 errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); |
| extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, |
| void *buf); |
| extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, |
| char *block_buf, |
| int adjust, __u32 *newcount); |
| |
| /* 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); |
| 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); |
| |
| /* 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_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(ext2_badblocks_list bb); |
| extern void ext2fs_u32_list_free(ext2_u32_list bb); |
| |
| /* getsize.c */ |
| extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, |
| blk_t *retblocks); |
| |
| /* getsectsize.c */ |
| errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); |
| |
| /* imager.c */ |
| extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); |
| extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); |
| extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); |
| extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); |
| extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); |
| extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); |
| |
| /* ind_block.c */ |
| errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); |
| errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); |
| |
| /* initialize.c */ |
| extern errcode_t ext2fs_initialize(const char *name, int flags, |
| struct ext2_super_block *param, |
| io_manager manager, ext2_filsys *ret_fs); |
| |
| /* icount.c */ |
| extern void ext2fs_free_icount(ext2_icount_t icount); |
| extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, |
| int flags, ext2_icount_t *ret); |
| extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, |
| unsigned int size, |
| ext2_icount_t hint, ext2_icount_t *ret); |
| extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, |
| unsigned int size, |
| ext2_icount_t *ret); |
| extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, |
| __u16 *ret); |
| extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, |
| __u16 *ret); |
| extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, |
| __u16 *ret); |
| extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, |
| __u16 count); |
| extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); |
| errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); |
| |
| /* inode.c */ |
| 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); |
| 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_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_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); |
| |
| /* 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); |
| |
| /* mkdir.c */ |
| extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, |
| const char *name); |
| |
| /* mkjournal.c */ |
| extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, |
| __u32 size, 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 size, |
| int flags); |
| extern int ext2fs_default_journal_size(__u64 blocks); |
| |
| /* 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); |
| extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, |
| dgrp_t i); |
| errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); |
| errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); |
| errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); |
| |
| /* get_pathname.c */ |
| extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, |
| char **name); |
| |
| /* link.c */ |
| errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, |
| ext2_ino_t ino, int flags); |
| errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, |
| ext2_ino_t ino, int flags); |
| |
| /* 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); |
| |
| /* 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_ext_attr(char *to, char *from, int bufsize, |
| int has_header); |
| 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_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); |
| |
| /* 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); |
| |
| /* write_bb_file.c */ |
| extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, |
| unsigned int flags, |
| FILE *f); |
| |
| |
| /* inline functions */ |
| extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); |
| extern errcode_t ext2fs_get_array(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 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, 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 unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); |
| |
| /* |
| * 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 |
| #include <string.h> |
| /* |
| * Allocate memory |
| */ |
| _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_array(unsigned long count, unsigned long size, void *ptr) |
| { |
| if (count && (-1UL)/count<size) |
| return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? |
| return ext2fs_get_mem(count*size, ptr); |
| } |
| |
| /* |
| * Free memory |
| */ |
| _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 |
| */ |
| _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; |
| } |
| #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, 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 fs->super->s_first_data_block + |
| (group * fs->super->s_blocks_per_group); |
| } |
| |
| /* |
| * Return the last block (inclusive) in a group |
| */ |
| _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) |
| { |
| return (group == fs->group_desc_count - 1 ? |
| fs->super->s_blocks_count - 1 : |
| ext2fs_group_first_block(fs, group) + |
| (fs->super->s_blocks_per_group - 1)); |
| } |
| |
| _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, |
| struct ext2_inode *inode) |
| { |
| return inode->i_blocks - |
| (inode->i_file_acl ? fs->blocksize >> 9 : 0); |
| } |
| |
| /* |
| * 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; |
| } |
| #undef _INLINE_ |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _EXT2FS_EXT2FS_H */ |
