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e2fsprogs/lib/ext2fs/ext2fs.h

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/*
* 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 <sys/types.h>
#include <linux/types.h>
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 {
int 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 {
int 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;
/*
* Reserved for future expansion
*/
__u32 reserved[12];
/*
* Not used by ext2fs library; reserved for the use of the
* calling application.
*/
void * private;
};
#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)
/*
* 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);
/* allocate_tables.c */
errcode_t ext2fs_allocate_tables(ext2_filsys fs);
/* badblocks.c */
extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
int size);
extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
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);
/* bb_compat */
extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
extern void badblocks_list_free(badblocks_list bb);
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);
/* 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);
/* 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 */
errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ino_t *ret_num_dirs);
errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
void ext2fs_free_dblist(ext2_dblist dblist);
errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ino_t ino, blk_t blk,
int blockcnt);
errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
int (*func)(ext2_filsys fs,
struct ext2_db_entry *db_info,
void *private),
void *private);
errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ino_t ino, blk_t blk,
int blockcnt);
/* 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);
/* 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);
/* 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);
/* 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
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