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);
79 extern const struct xfs_dir_ops xfs_dir2_ops;
80 extern const struct xfs_dir_ops xfs_dir2_ftype_ops;
81 extern const struct xfs_dir_ops xfs_dir3_ops;
84 * Generic directory interface routines
86 extern void xfs_dir_startup(void);
87 extern void xfs_dir_mount(struct xfs_mount *mp);
88 extern int xfs_dir_isempty(struct xfs_inode *dp);
89 extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp,
90 struct xfs_inode *pdp);
91 extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp,
92 struct xfs_name *name, xfs_ino_t inum,
94 struct xfs_bmap_free *flist, xfs_extlen_t tot);
95 extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
96 struct xfs_name *name, xfs_ino_t *inum,
97 struct xfs_name *ci_name);
98 extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp,
99 struct xfs_name *name, xfs_ino_t ino,
100 xfs_fsblock_t *first,
101 struct xfs_bmap_free *flist, xfs_extlen_t tot);
102 extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp,
103 struct xfs_name *name, xfs_ino_t inum,
104 xfs_fsblock_t *first,
105 struct xfs_bmap_free *flist, xfs_extlen_t tot);
106 extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp,
107 struct xfs_name *name, uint resblks);
110 * Direct call from the bmap code, bypassing the generic directory layer.
112 extern int xfs_dir2_sf_to_block(struct xfs_da_args *args);
115 * Interface routines used by userspace utilities
117 extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r);
118 extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r);
119 extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db,
122 extern void xfs_dir2_data_freescan(struct xfs_inode *dp,
123 struct xfs_dir2_data_hdr *hdr, int *loghead);
124 extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_inode *dp,
125 struct xfs_buf *bp, struct xfs_dir2_data_entry *dep);
126 extern void xfs_dir2_data_log_header(struct xfs_trans *tp, struct xfs_inode *dp,
128 extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_buf *bp,
129 struct xfs_dir2_data_unused *dup);
130 extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_inode *dp,
131 struct xfs_buf *bp, xfs_dir2_data_aoff_t offset,
132 xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp);
133 extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_inode *dp,
134 struct xfs_buf *bp, struct xfs_dir2_data_unused *dup,
135 xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len,
136 int *needlogp, int *needscanp);
138 extern struct xfs_dir2_data_free *xfs_dir2_data_freefind(
139 struct xfs_dir2_data_hdr *hdr, struct xfs_dir2_data_free *bf,
140 struct xfs_dir2_data_unused *dup);
142 extern const struct xfs_buf_ops xfs_dir3_block_buf_ops;
143 extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops;
144 extern const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops;
145 extern const struct xfs_buf_ops xfs_dir3_free_buf_ops;
146 extern const struct xfs_buf_ops xfs_dir3_data_buf_ops;
148 #endif /* __XFS_DIR2_H__ */