/*
* 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.
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
* %End-Header%
*/
#include "com_err.h"
#include "ext2_io.h"
#include "ext2_err.h"
+#include "ext2_ext_attr.h"
#else
#include <et/com_err.h>
#include <ext2fs/ext2_io.h>
#include <ext2fs/ext2_err.h>
+#include <ext2fs/ext2_ext_attr.h>
#endif
/*
#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
*/
struct ext2_inode_cache *icache;
io_channel image_io;
+
+ /*
+ * More callback functions
+ */
+ errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
+ blk64_t *ret);
+ void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
};
#if EXT2_FLAT_INCLUDES
* 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.
* BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
* called for data blocks only.
*
- * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
+ * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
* modify returned block number.
*
* BLOCK_FLAG_NO_LARGE is for internal use only. It informs
/*
* Flags for ext2fs_move_blocks
*/
-#define EXT2_BMOVE_GET_DBLIST 0x0001
+#define EXT2_BMOVE_GET_DBLIST 0x0001
#define EXT2_BMOVE_DEBUG 0x0002
#endif
/*
+ * Generic (non-filesystem layout specific) extents structure
+ */
+
+#define EXT2_EXTENT_FLAGS_LEAF 0x0001
+#define EXT2_EXTENT_FLAGS_UNINIT 0x0002
+#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
+
+struct ext2fs_extent {
+ blk64_t e_pblk; /* first physical block */
+ blk64_t e_lblk; /* first logical block extent covers */
+ __u32 e_len; /* number of blocks covered by extent */
+ __u32 e_flags; /* extent flags */
+};
+
+typedef struct ext2_extent_handle *ext2_extent_handle_t;
+typedef struct ext2_extent_path *ext2_extent_path_t;
+
+/*
+ * Flags used by ext2fs_extent_get()
+ */
+#define EXT2_EXTENT_CURRENT 0x0000
+#define EXT2_EXTENT_MOVE_MASK 0x000F
+#define EXT2_EXTENT_ROOT 0x0001
+#define EXT2_EXTENT_LAST_LEAF 0x0002
+#define EXT2_EXTENT_FIRST_SIB 0x0003
+#define EXT2_EXTENT_LAST_SIB 0x0004
+#define EXT2_EXTENT_NEXT_SIB 0x0005
+#define EXT2_EXTENT_PREV_SIB 0x0006
+#define EXT2_EXTENT_NEXT_LEAF 0x0007
+#define EXT2_EXTENT_PREV_LEAF 0x0008
+#define EXT2_EXTENT_NEXT 0x0009
+#define EXT2_EXTENT_PREV 0x000A
+#define EXT2_EXTENT_UP 0x000B
+#define EXT2_EXTENT_DOWN 0x000C
+#define EXT2_EXTENT_DOWN_AND_LAST 0x000D
+
+/*
+ * Flags used by ext2fs_extent_insert()
+ */
+#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
+#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
+
+/*
+ * Flags used by ext2fs_extent_delete()
+ */
+#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */
+
+/*
+ * Flags used by ext2fs_extent_set_bmap()
+ */
+#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
+
+/*
+ * Data structure returned by ext2fs_extent_get_info()
+ */
+struct ext2_extent_info {
+ int curr_entry;
+ int curr_level;
+ int num_entries;
+ int max_entries;
+ int max_depth;
+ int bytes_avail;
+ blk64_t max_lblk;
+ blk64_t max_pblk;
+ __u32 max_len;
+ __u32 max_uninit_len;
+};
+
+/*
* Flags for directory block reading and writing functions
*/
#define EXT2_DIRBLOCK_V2_STRUCT 0x0001
#define BMAP_SET 0x0002
/*
+ * Returned flags from ext2fs_bmap
+ */
+#define BMAP_RET_UNINIT 0x0001
+
+/*
* Flags for imager.c functions
*/
#define IMAGER_FLAG_INODEMAP 1
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 */
EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
EXT2_FEATURE_INCOMPAT_META_BG|\
EXT3_FEATURE_INCOMPAT_RECOVER|\
+ EXT3_FEATURE_INCOMPAT_EXTENTS|\
EXT4_FEATURE_INCOMPAT_FLEX_BG)
#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|\
+ EXT3_FEATURE_INCOMPAT_EXTENTS|\
EXT4_FEATURE_INCOMPAT_FLEX_BG)
#endif
#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
+ EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
+ EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
+ EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
+ EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
/*
* 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)
+#define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
+#define EXT2_LIB_SOFTSUPP_RO_COMPAT (0)
/*
* function prototypes
blk_t *ret);
extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
char *block_buf, blk_t *ret);
+extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
+ errcode_t (*func)(ext2_filsys fs,
+ blk64_t goal,
+ blk64_t *ret),
+ errcode_t (**old)(ext2_filsys fs,
+ blk64_t goal,
+ blk64_t *ret));
/* alloc_sb.c */
-extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
+extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
dgrp_t group,
ext2fs_block_bitmap bmap);
+extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
+ void (*func)(ext2_filsys fs,
+ blk64_t blk,
+ int inuse),
+ void (**old)(ext2_filsys fs,
+ blk64_t blk,
+ int inuse));
/* alloc_stats.c */
void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
/* bmap.c */
extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode,
+ struct ext2_inode *inode,
char *block_buf, int bmap_flags,
blk_t block, blk_t *phys_blk);
-
+extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
+ struct ext2_inode *inode,
+ char *block_buf, int bmap_flags, blk64_t block,
+ int *ret_flags, blk64_t *phys_blk);
#if 0
/* bmove.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,
+extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
dgrp_t group,
blk_t *ret_super_blk,
blk_t *ret_old_desc_blk,
int *ret_meta_bg);
extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
+/* csum.c */
+extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
+extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
+extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
+
/* dblist.c */
extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
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
/* dir_iterate.c */
-extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
+extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
+ struct ext2_dir_entry *dirent,
+ unsigned int *rec_len);
+extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
+ unsigned int len,
+ struct ext2_dir_entry *dirent);
+extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
ext2_ino_t dir,
int flags,
char *block_buf,
char *buf,
void *priv_data),
void *priv_data);
-extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
+extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
ext2_ino_t dir,
int flags,
char *block_buf,
extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
/* ext_attr.c */
+extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
+ void *data);
extern 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);
char *block_buf,
int adjust, __u32 *newcount);
+/* extent.c */
+extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
+extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
+ ext2_extent_handle_t *handle);
+extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
+ struct ext2_inode *inode,
+ ext2_extent_handle_t *ret_handle);
+extern void ext2fs_extent_free(ext2_extent_handle_t handle);
+extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
+ int flags, struct ext2fs_extent *extent);
+extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
+ struct ext2fs_extent *extent);
+extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
+ struct ext2fs_extent *extent);
+extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
+ blk64_t logical, blk64_t physical,
+ int flags);
+extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
+extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
+ struct ext2_extent_info *info);
+extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
+ blk64_t blk);
+
/* fileio.c */
extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
/* gen_bitmap.c */
extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
-extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
- __u32 start, __u32 end,
+extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
+ __u32 start, __u32 end,
__u32 real_end,
const char *descr, char *init_map,
ext2fs_generic_bitmap *ret);
ext2fs_generic_bitmap *dest);
extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
- errcode_t magic,
+ errcode_t magic,
errcode_t neq,
- ext2_ino_t end,
+ ext2_ino_t end,
ext2_ino_t *oend);
extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
/* getsize.c */
extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
blk_t *retblocks);
+extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
+ blk64_t *retblocks);
/* getsectsize.c */
errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
+/* i_block.c */
+errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
+ blk64_t num_blocks);
+errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
+ blk64_t num_blocks);
+errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
+
/* imager.c */
extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
extern 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,
+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,
+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,
/* inode.c */
extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
-extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
+extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
ext2_ino_t *ino,
- struct ext2_inode *inode,
+ 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 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,
+ 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,
+ struct ext2_inode * inode,
int bufsize);
extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode * inode);
/* inode_io.c */
extern io_manager inode_io_manager;
-extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
+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,
const char *name);
/* mkjournal.c */
+extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
+ blk_t *ret_blk, int *ret_count);
extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
__u32 size, int flags,
char **ret_jsb);
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,
+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,
+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);
ext2_badblocks_list *bb_list);
/* read_bb_file.c */
-extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
+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,
+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));
extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
/* swapfs.c */
-extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
+extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
int has_header);
+extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
+ struct ext2_ext_attr_header *from_hdr);
+extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
+ struct ext2_ext_attr_entry *from_entry);
extern void ext2fs_swap_super(struct ext2_super_block * super);
extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
memcpy(ptr, &p, sizeof(p));
return 0;
}
-
+
/*
* Resize memory
*/