1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_DIR2_H__
#define __XFS_DIR2_H__
struct xfs_bmap_free;
struct xfs_da_args;
struct xfs_inode;
struct xfs_mount;
struct xfs_trans;
struct xfs_dir2_sf_hdr;
struct xfs_dir2_sf_entry;
struct xfs_dir2_data_hdr;
struct xfs_dir2_data_entry;
struct xfs_dir2_data_unused;
extern struct xfs_name xfs_name_dotdot;
/*
* directory operations vector for encode/decode routines
*/
struct xfs_dir_ops {
int (*sf_entsize)(struct xfs_dir2_sf_hdr *hdr, int len);
struct xfs_dir2_sf_entry *
(*sf_nextentry)(struct xfs_dir2_sf_hdr *hdr,
struct xfs_dir2_sf_entry *sfep);
__uint8_t (*sf_get_ftype)(struct xfs_dir2_sf_entry *sfep);
void (*sf_put_ftype)(struct xfs_dir2_sf_entry *sfep,
__uint8_t ftype);
xfs_ino_t (*sf_get_ino)(struct xfs_dir2_sf_hdr *hdr,
struct xfs_dir2_sf_entry *sfep);
void (*sf_put_ino)(struct xfs_dir2_sf_hdr *hdr,
struct xfs_dir2_sf_entry *sfep,
xfs_ino_t ino);
xfs_ino_t (*sf_get_parent_ino)(struct xfs_dir2_sf_hdr *hdr);
void (*sf_put_parent_ino)(struct xfs_dir2_sf_hdr *hdr,
xfs_ino_t ino);
int (*data_entsize)(int len);
__uint8_t (*data_get_ftype)(struct xfs_dir2_data_entry *dep);
void (*data_put_ftype)(struct xfs_dir2_data_entry *dep,
__uint8_t ftype);
__be16 * (*data_entry_tag_p)(struct xfs_dir2_data_entry *dep);
struct xfs_dir2_data_free *
(*data_bestfree_p)(struct xfs_dir2_data_hdr *hdr);
xfs_dir2_data_aoff_t (*data_dot_offset)(void);
xfs_dir2_data_aoff_t (*data_dotdot_offset)(void);
xfs_dir2_data_aoff_t (*data_first_offset)(void);
size_t (*data_entry_offset)(void);
struct xfs_dir2_data_entry *
(*data_dot_entry_p)(struct xfs_dir2_data_hdr *hdr);
struct xfs_dir2_data_entry *
(*data_dotdot_entry_p)(struct xfs_dir2_data_hdr *hdr);
struct xfs_dir2_data_entry *
(*data_first_entry_p)(struct xfs_dir2_data_hdr *hdr);
struct xfs_dir2_data_entry *
(*data_entry_p)(struct xfs_dir2_data_hdr *hdr);
struct xfs_dir2_data_unused *
(*data_unused_p)(struct xfs_dir2_data_hdr *hdr);
int (*leaf_hdr_size)(void);
int (*leaf_max_ents)(struct xfs_mount *mp);
struct xfs_dir2_leaf_entry *
(*leaf_ents_p)(struct xfs_dir2_leaf *lp);
int (*node_hdr_size)(void);
struct xfs_da_node_entry *
(*node_tree_p)(struct xfs_da_intnode *dap);
};
extern const struct xfs_dir_ops *
xfs_dir_get_ops(struct xfs_mount *mp, struct xfs_inode *dp);
extern const struct xfs_dir_ops *
xfs_nondir_get_ops(struct xfs_mount *mp, struct xfs_inode *dp);
/*
* Generic directory interface routines
*/
extern void xfs_dir_startup(void);
extern void xfs_dir_mount(struct xfs_mount *mp);
extern int xfs_dir_isempty(struct xfs_inode *dp);
extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_inode *pdp);
extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_name *name, xfs_ino_t inum,
xfs_fsblock_t *first,
struct xfs_bmap_free *flist, xfs_extlen_t tot);
extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_name *name, xfs_ino_t *inum,
struct xfs_name *ci_name);
extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_name *name, xfs_ino_t ino,
xfs_fsblock_t *first,
struct xfs_bmap_free *flist, xfs_extlen_t tot);
extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_name *name, xfs_ino_t inum,
xfs_fsblock_t *first,
struct xfs_bmap_free *flist, xfs_extlen_t tot);
extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_name *name, uint resblks);
/*
* Direct call from the bmap code, bypassing the generic directory layer.
*/
extern int xfs_dir2_sf_to_block(struct xfs_da_args *args);
/*
* Interface routines used by userspace utilities
*/
extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r);
extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r);
extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db,
struct xfs_buf *bp);
extern void xfs_dir2_data_freescan(struct xfs_inode *dp,
struct xfs_dir2_data_hdr *hdr, int *loghead);
extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_buf *bp, struct xfs_dir2_data_entry *dep);
extern void xfs_dir2_data_log_header(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_buf *bp);
extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_buf *bp,
struct xfs_dir2_data_unused *dup);
extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_buf *bp, xfs_dir2_data_aoff_t offset,
xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp);
extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_buf *bp, struct xfs_dir2_data_unused *dup,
xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len,
int *needlogp, int *needscanp);
extern struct xfs_dir2_data_free *xfs_dir2_data_freefind(
struct xfs_dir2_data_hdr *hdr, struct xfs_dir2_data_free *bf,
struct xfs_dir2_data_unused *dup);
extern const struct xfs_buf_ops xfs_dir3_block_buf_ops;
extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops;
extern const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops;
extern const struct xfs_buf_ops xfs_dir3_free_buf_ops;
extern const struct xfs_buf_ops xfs_dir3_data_buf_ops;
#endif /* __XFS_DIR2_H__ */
|
