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
;
63 xfs_dir2_data_aoff_t data_dotdot_offset
;
64 xfs_dir2_data_aoff_t data_first_offset
;
65 size_t data_entry_offset
;
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
);
79 void (*leaf_hdr_to_disk
)(struct xfs_dir2_leaf
*to
,
80 struct xfs_dir3_icleaf_hdr
*from
);
81 void (*leaf_hdr_from_disk
)(struct xfs_dir3_icleaf_hdr
*to
,
82 struct xfs_dir2_leaf
*from
);
83 int (*leaf_max_ents
)(struct xfs_mount
*mp
);
84 struct xfs_dir2_leaf_entry
*
85 (*leaf_ents_p
)(struct xfs_dir2_leaf
*lp
);
88 void (*node_hdr_to_disk
)(struct xfs_da_intnode
*to
,
89 struct xfs_da3_icnode_hdr
*from
);
90 void (*node_hdr_from_disk
)(struct xfs_da3_icnode_hdr
*to
,
91 struct xfs_da_intnode
*from
);
92 struct xfs_da_node_entry
*
93 (*node_tree_p
)(struct xfs_da_intnode
*dap
);
96 void (*free_hdr_to_disk
)(struct xfs_dir2_free
*to
,
97 struct xfs_dir3_icfree_hdr
*from
);
98 void (*free_hdr_from_disk
)(struct xfs_dir3_icfree_hdr
*to
,
99 struct xfs_dir2_free
*from
);
100 int (*free_max_bests
)(struct xfs_mount
*mp
);
101 __be16
* (*free_bests_p
)(struct xfs_dir2_free
*free
);
102 xfs_dir2_db_t (*db_to_fdb
)(struct xfs_mount
*mp
, xfs_dir2_db_t db
);
103 int (*db_to_fdindex
)(struct xfs_mount
*mp
, xfs_dir2_db_t db
);
106 extern const struct xfs_dir_ops
*
107 xfs_dir_get_ops(struct xfs_mount
*mp
, struct xfs_inode
*dp
);
108 extern const struct xfs_dir_ops
*
109 xfs_nondir_get_ops(struct xfs_mount
*mp
, struct xfs_inode
*dp
);
112 * Generic directory interface routines
114 extern void xfs_dir_startup(void);
115 extern void xfs_dir_mount(struct xfs_mount
*mp
);
116 extern int xfs_dir_isempty(struct xfs_inode
*dp
);
117 extern int xfs_dir_init(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
118 struct xfs_inode
*pdp
);
119 extern int xfs_dir_createname(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
120 struct xfs_name
*name
, xfs_ino_t inum
,
121 xfs_fsblock_t
*first
,
122 struct xfs_bmap_free
*flist
, xfs_extlen_t tot
);
123 extern int xfs_dir_lookup(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
124 struct xfs_name
*name
, xfs_ino_t
*inum
,
125 struct xfs_name
*ci_name
);
126 extern int xfs_dir_removename(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
127 struct xfs_name
*name
, xfs_ino_t ino
,
128 xfs_fsblock_t
*first
,
129 struct xfs_bmap_free
*flist
, xfs_extlen_t tot
);
130 extern int xfs_dir_replace(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
131 struct xfs_name
*name
, xfs_ino_t inum
,
132 xfs_fsblock_t
*first
,
133 struct xfs_bmap_free
*flist
, xfs_extlen_t tot
);
134 extern int xfs_dir_canenter(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
135 struct xfs_name
*name
, uint resblks
);
138 * Direct call from the bmap code, bypassing the generic directory layer.
140 extern int xfs_dir2_sf_to_block(struct xfs_da_args
*args
);
143 * Interface routines used by userspace utilities
145 extern int xfs_dir2_isblock(struct xfs_trans
*tp
, struct xfs_inode
*dp
, int *r
);
146 extern int xfs_dir2_isleaf(struct xfs_trans
*tp
, struct xfs_inode
*dp
, int *r
);
147 extern int xfs_dir2_shrink_inode(struct xfs_da_args
*args
, xfs_dir2_db_t db
,
150 extern void xfs_dir2_data_freescan(struct xfs_inode
*dp
,
151 struct xfs_dir2_data_hdr
*hdr
, int *loghead
);
152 extern void xfs_dir2_data_log_entry(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
153 struct xfs_buf
*bp
, struct xfs_dir2_data_entry
*dep
);
154 extern void xfs_dir2_data_log_header(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
156 extern void xfs_dir2_data_log_unused(struct xfs_trans
*tp
, struct xfs_buf
*bp
,
157 struct xfs_dir2_data_unused
*dup
);
158 extern void xfs_dir2_data_make_free(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
159 struct xfs_buf
*bp
, xfs_dir2_data_aoff_t offset
,
160 xfs_dir2_data_aoff_t len
, int *needlogp
, int *needscanp
);
161 extern void xfs_dir2_data_use_free(struct xfs_trans
*tp
, struct xfs_inode
*dp
,
162 struct xfs_buf
*bp
, struct xfs_dir2_data_unused
*dup
,
163 xfs_dir2_data_aoff_t offset
, xfs_dir2_data_aoff_t len
,
164 int *needlogp
, int *needscanp
);
166 extern struct xfs_dir2_data_free
*xfs_dir2_data_freefind(
167 struct xfs_dir2_data_hdr
*hdr
, struct xfs_dir2_data_free
*bf
,
168 struct xfs_dir2_data_unused
*dup
);
170 extern const struct xfs_buf_ops xfs_dir3_block_buf_ops
;
171 extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops
;
172 extern const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops
;
173 extern const struct xfs_buf_ops xfs_dir3_free_buf_ops
;
174 extern const struct xfs_buf_ops xfs_dir3_data_buf_ops
;
176 #endif /* __XFS_DIR2_H__ */