2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 #ifndef __XFS_DIR2_H__
19 #define __XFS_DIR2_H__
26 struct xfs_dir2_sf_hdr
;
27 struct xfs_dir2_sf_entry
;
28 struct xfs_dir2_data_hdr
;
29 struct xfs_dir2_data_entry
;
30 struct xfs_dir2_data_unused
;
32 extern struct xfs_name xfs_name_dotdot
;
35 * directory operations vector for encode/decode routines
38 int (*sf_entsize
)(struct xfs_dir2_sf_hdr
*hdr
, int len
);
39 struct xfs_dir2_sf_entry
*
40 (*sf_nextentry
)(struct xfs_dir2_sf_hdr
*hdr
,
41 struct xfs_dir2_sf_entry
*sfep
);
42 __uint8_t (*sf_get_ftype
)(struct xfs_dir2_sf_entry
*sfep
);
43 void (*sf_put_ftype
)(struct xfs_dir2_sf_entry
*sfep
,
45 xfs_ino_t (*sf_get_ino
)(struct xfs_dir2_sf_hdr
*hdr
,
46 struct xfs_dir2_sf_entry
*sfep
);
47 void (*sf_put_ino
)(struct xfs_dir2_sf_hdr
*hdr
,
48 struct xfs_dir2_sf_entry
*sfep
,
50 xfs_ino_t (*sf_get_parent_ino
)(struct xfs_dir2_sf_hdr
*hdr
);
51 void (*sf_put_parent_ino
)(struct xfs_dir2_sf_hdr
*hdr
,
54 int (*data_entsize
)(int len
);
55 __uint8_t (*data_get_ftype
)(struct xfs_dir2_data_entry
*dep
);
56 void (*data_put_ftype
)(struct xfs_dir2_data_entry
*dep
,
58 __be16
* (*data_entry_tag_p
)(struct xfs_dir2_data_entry
*dep
);
59 struct xfs_dir2_data_free
*
60 (*data_bestfree_p
)(struct xfs_dir2_data_hdr
*hdr
);
62 xfs_dir2_data_aoff_t (*data_dot_offset
)(void);
63 xfs_dir2_data_aoff_t (*data_dotdot_offset
)(void);
64 xfs_dir2_data_aoff_t (*data_first_offset
)(void);
65 size_t (*data_entry_offset
)(void);
67 struct xfs_dir2_data_entry
*
68 (*data_dot_entry_p
)(struct xfs_dir2_data_hdr
*hdr
);
69 struct xfs_dir2_data_entry
*
70 (*data_dotdot_entry_p
)(struct xfs_dir2_data_hdr
*hdr
);
71 struct xfs_dir2_data_entry
*
72 (*data_first_entry_p
)(struct xfs_dir2_data_hdr
*hdr
);
73 struct xfs_dir2_data_entry
*
74 (*data_entry_p
)(struct xfs_dir2_data_hdr
*hdr
);
75 struct xfs_dir2_data_unused
*
76 (*data_unused_p
)(struct xfs_dir2_data_hdr
*hdr
);
78 int (*leaf_hdr_size
)(void);
79 int (*leaf_max_ents
)(struct xfs_mount
*mp
);
80 struct xfs_dir2_leaf_entry
*
81 (*leaf_ents_p
)(struct xfs_dir2_leaf
*lp
);
83 int (*node_hdr_size
)(void);
84 struct xfs_da_node_entry
*
85 (*node_tree_p
)(struct xfs_da_intnode
*dap
);
88 extern const struct xfs_dir_ops
*
89 xfs_dir_get_ops(struct xfs_mount
*mp
, struct xfs_inode
*dp
);
90 extern const struct xfs_dir_ops
*
91 xfs_nondir_get_ops(struct xfs_mount
*mp
, struct xfs_inode
*dp
);
94 * Generic directory interface routines
96 extern void xfs_dir_startup(void);
97 extern void xfs_dir_mount(struct xfs_mount
*mp
);
98 extern int xfs_dir_isempty(struct xfs_inode
*dp
);
99 extern int xfs_dir_init(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
100 struct xfs_inode
*pdp
);
101 extern int xfs_dir_createname(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
102 struct xfs_name
*name
, xfs_ino_t inum
,
103 xfs_fsblock_t
*first
,
104 struct xfs_bmap_free
*flist
, xfs_extlen_t tot
);
105 extern int xfs_dir_lookup(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
106 struct xfs_name
*name
, xfs_ino_t
*inum
,
107 struct xfs_name
*ci_name
);
108 extern int xfs_dir_removename(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
109 struct xfs_name
*name
, xfs_ino_t ino
,
110 xfs_fsblock_t
*first
,
111 struct xfs_bmap_free
*flist
, xfs_extlen_t tot
);
112 extern int xfs_dir_replace(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
113 struct xfs_name
*name
, xfs_ino_t inum
,
114 xfs_fsblock_t
*first
,
115 struct xfs_bmap_free
*flist
, xfs_extlen_t tot
);
116 extern int xfs_dir_canenter(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
117 struct xfs_name
*name
, uint resblks
);
120 * Direct call from the bmap code, bypassing the generic directory layer.
122 extern int xfs_dir2_sf_to_block(struct xfs_da_args
*args
);
125 * Interface routines used by userspace utilities
127 extern int xfs_dir2_isblock(struct xfs_trans
*tp
, struct xfs_inode
*dp
, int *r
);
128 extern int xfs_dir2_isleaf(struct xfs_trans
*tp
, struct xfs_inode
*dp
, int *r
);
129 extern int xfs_dir2_shrink_inode(struct xfs_da_args
*args
, xfs_dir2_db_t db
,
132 extern void xfs_dir2_data_freescan(struct xfs_inode
*dp
,
133 struct xfs_dir2_data_hdr
*hdr
, int *loghead
);
134 extern void xfs_dir2_data_log_entry(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
135 struct xfs_buf
*bp
, struct xfs_dir2_data_entry
*dep
);
136 extern void xfs_dir2_data_log_header(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
138 extern void xfs_dir2_data_log_unused(struct xfs_trans
*tp
, struct xfs_buf
*bp
,
139 struct xfs_dir2_data_unused
*dup
);
140 extern void xfs_dir2_data_make_free(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
141 struct xfs_buf
*bp
, xfs_dir2_data_aoff_t offset
,
142 xfs_dir2_data_aoff_t len
, int *needlogp
, int *needscanp
);
143 extern void xfs_dir2_data_use_free(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
144 struct xfs_buf
*bp
, struct xfs_dir2_data_unused
*dup
,
145 xfs_dir2_data_aoff_t offset
, xfs_dir2_data_aoff_t len
,
146 int *needlogp
, int *needscanp
);
148 extern struct xfs_dir2_data_free
*xfs_dir2_data_freefind(
149 struct xfs_dir2_data_hdr
*hdr
, struct xfs_dir2_data_free
*bf
,
150 struct xfs_dir2_data_unused
*dup
);
152 extern const struct xfs_buf_ops xfs_dir3_block_buf_ops
;
153 extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops
;
154 extern const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops
;
155 extern const struct xfs_buf_ops xfs_dir3_free_buf_ops
;
156 extern const struct xfs_buf_ops xfs_dir3_data_buf_ops
;
158 #endif /* __XFS_DIR2_H__ */