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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_DIR2_H__ | |
57926640 | 19 | #define __XFS_DIR2_H__ |
1da177e4 | 20 | |
f6c2d1fa | 21 | struct xfs_bmap_free; |
57926640 | 22 | struct xfs_da_args; |
1da177e4 | 23 | struct xfs_inode; |
f6c2d1fa | 24 | struct xfs_mount; |
1da177e4 | 25 | struct xfs_trans; |
2b9ab5ab DC |
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; | |
1da177e4 | 31 | |
556b8b16 BN |
32 | extern struct xfs_name xfs_name_dotdot; |
33 | ||
32c5483a DC |
34 | /* |
35 | * directory operations vector for encode/decode routines | |
36 | */ | |
37 | struct xfs_dir_ops { | |
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); | |
4740175e DC |
42 | __uint8_t (*sf_get_ftype)(struct xfs_dir2_sf_entry *sfep); |
43 | void (*sf_put_ftype)(struct xfs_dir2_sf_entry *sfep, | |
44 | __uint8_t ftype); | |
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, | |
49 | xfs_ino_t ino); | |
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, | |
52 | xfs_ino_t ino); | |
9d23fc85 DC |
53 | |
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, | |
57 | __uint8_t ftype); | |
58 | __be16 * (*data_entry_tag_p)(struct xfs_dir2_data_entry *dep); | |
2ca98774 DC |
59 | struct xfs_dir2_data_free * |
60 | (*data_bestfree_p)(struct xfs_dir2_data_hdr *hdr); | |
9d23fc85 DC |
61 | |
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); | |
2ca98774 DC |
65 | size_t (*data_entry_offset)(void); |
66 | ||
9d23fc85 DC |
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); | |
2ca98774 DC |
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); | |
4141956a DC |
77 | |
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); | |
32c5483a DC |
82 | }; |
83 | ||
4141956a DC |
84 | extern const struct xfs_dir_ops * |
85 | xfs_dir_get_ops(struct xfs_mount *mp, struct xfs_inode *dp); | |
32c5483a | 86 | |
1da177e4 | 87 | /* |
f6c2d1fa NS |
88 | * Generic directory interface routines |
89 | */ | |
90 | extern void xfs_dir_startup(void); | |
91 | extern void xfs_dir_mount(struct xfs_mount *mp); | |
92 | extern int xfs_dir_isempty(struct xfs_inode *dp); | |
93 | extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp, | |
94 | struct xfs_inode *pdp); | |
95 | extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp, | |
556b8b16 | 96 | struct xfs_name *name, xfs_ino_t inum, |
f6c2d1fa NS |
97 | xfs_fsblock_t *first, |
98 | struct xfs_bmap_free *flist, xfs_extlen_t tot); | |
99 | extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp, | |
384f3ced BN |
100 | struct xfs_name *name, xfs_ino_t *inum, |
101 | struct xfs_name *ci_name); | |
f6c2d1fa | 102 | extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp, |
556b8b16 | 103 | struct xfs_name *name, xfs_ino_t ino, |
f6c2d1fa NS |
104 | xfs_fsblock_t *first, |
105 | struct xfs_bmap_free *flist, xfs_extlen_t tot); | |
f6c2d1fa | 106 | extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp, |
556b8b16 | 107 | struct xfs_name *name, xfs_ino_t inum, |
f6c2d1fa NS |
108 | xfs_fsblock_t *first, |
109 | struct xfs_bmap_free *flist, xfs_extlen_t tot); | |
110 | extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp, | |
556b8b16 | 111 | struct xfs_name *name, uint resblks); |
f6c2d1fa NS |
112 | |
113 | /* | |
57926640 | 114 | * Direct call from the bmap code, bypassing the generic directory layer. |
1da177e4 | 115 | */ |
57926640 | 116 | extern int xfs_dir2_sf_to_block(struct xfs_da_args *args); |
384f3ced | 117 | |
2b9ab5ab DC |
118 | /* |
119 | * Interface routines used by userspace utilities | |
120 | */ | |
2b9ab5ab DC |
121 | extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r); |
122 | extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r); | |
123 | extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, | |
124 | struct xfs_buf *bp); | |
125 | ||
9d23fc85 | 126 | extern void xfs_dir2_data_freescan(struct xfs_inode *dp, |
2b9ab5ab | 127 | struct xfs_dir2_data_hdr *hdr, int *loghead); |
9d23fc85 DC |
128 | extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_inode *dp, |
129 | struct xfs_buf *bp, struct xfs_dir2_data_entry *dep); | |
2ca98774 | 130 | extern void xfs_dir2_data_log_header(struct xfs_trans *tp, struct xfs_inode *dp, |
2b9ab5ab DC |
131 | struct xfs_buf *bp); |
132 | extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_buf *bp, | |
133 | struct xfs_dir2_data_unused *dup); | |
2ca98774 DC |
134 | extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_inode *dp, |
135 | struct xfs_buf *bp, xfs_dir2_data_aoff_t offset, | |
136 | xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp); | |
137 | extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_inode *dp, | |
138 | struct xfs_buf *bp, struct xfs_dir2_data_unused *dup, | |
2b9ab5ab DC |
139 | xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len, |
140 | int *needlogp, int *needscanp); | |
2b9ab5ab DC |
141 | |
142 | extern struct xfs_dir2_data_free *xfs_dir2_data_freefind( | |
2ca98774 DC |
143 | struct xfs_dir2_data_hdr *hdr, struct xfs_dir2_data_free *bf, |
144 | struct xfs_dir2_data_unused *dup); | |
2b9ab5ab DC |
145 | |
146 | extern const struct xfs_buf_ops xfs_dir3_block_buf_ops; | |
147 | extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops; | |
148 | extern const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops; | |
149 | extern const struct xfs_buf_ops xfs_dir3_free_buf_ops; | |
150 | extern const struct xfs_buf_ops xfs_dir3_data_buf_ops; | |
151 | ||
1da177e4 | 152 | #endif /* __XFS_DIR2_H__ */ |