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__ */