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1/*
2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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.
8 *
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.
13 *
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
17 */
18#ifndef __XFS_DIR2_PRIV_H__
19#define __XFS_DIR2_PRIV_H__
20
21struct dir_context;
22
23/*
24 * Directory offset/block conversion functions.
25 *
26 * DB blocks here are logical directory block numbers, not filesystem blocks.
27 */
28
29/*
30 * Convert dataptr to byte in file space
31 */
32static inline xfs_dir2_off_t
33xfs_dir2_dataptr_to_byte(xfs_dir2_dataptr_t dp)
34{
35 return (xfs_dir2_off_t)dp << XFS_DIR2_DATA_ALIGN_LOG;
36}
37
38/*
39 * Convert byte in file space to dataptr. It had better be aligned.
40 */
41static inline xfs_dir2_dataptr_t
42xfs_dir2_byte_to_dataptr(xfs_dir2_off_t by)
43{
44 return (xfs_dir2_dataptr_t)(by >> XFS_DIR2_DATA_ALIGN_LOG);
45}
46
47/*
48 * Convert byte in space to (DB) block
49 */
50static inline xfs_dir2_db_t
51xfs_dir2_byte_to_db(struct xfs_da_geometry *geo, xfs_dir2_off_t by)
52{
53 return (xfs_dir2_db_t)(by >> geo->blklog);
54}
55
56/*
57 * Convert dataptr to a block number
58 */
59static inline xfs_dir2_db_t
60xfs_dir2_dataptr_to_db(struct xfs_da_geometry *geo, xfs_dir2_dataptr_t dp)
61{
62 return xfs_dir2_byte_to_db(geo, xfs_dir2_dataptr_to_byte(dp));
63}
64
65/*
66 * Convert byte in space to offset in a block
67 */
68static inline xfs_dir2_data_aoff_t
69xfs_dir2_byte_to_off(struct xfs_da_geometry *geo, xfs_dir2_off_t by)
70{
71 return (xfs_dir2_data_aoff_t)(by & (geo->blksize - 1));
72}
73
74/*
75 * Convert dataptr to a byte offset in a block
76 */
77static inline xfs_dir2_data_aoff_t
78xfs_dir2_dataptr_to_off(struct xfs_da_geometry *geo, xfs_dir2_dataptr_t dp)
79{
80 return xfs_dir2_byte_to_off(geo, xfs_dir2_dataptr_to_byte(dp));
81}
82
83/*
84 * Convert block and offset to byte in space
85 */
86static inline xfs_dir2_off_t
87xfs_dir2_db_off_to_byte(struct xfs_da_geometry *geo, xfs_dir2_db_t db,
88 xfs_dir2_data_aoff_t o)
89{
90 return ((xfs_dir2_off_t)db << geo->blklog) + o;
91}
92
93/*
94 * Convert block (DB) to block (dablk)
95 */
96static inline xfs_dablk_t
97xfs_dir2_db_to_da(struct xfs_da_geometry *geo, xfs_dir2_db_t db)
98{
99 return (xfs_dablk_t)(db << (geo->blklog - geo->fsblog));
100}
101
102/*
103 * Convert byte in space to (DA) block
104 */
105static inline xfs_dablk_t
106xfs_dir2_byte_to_da(struct xfs_da_geometry *geo, xfs_dir2_off_t by)
107{
108 return xfs_dir2_db_to_da(geo, xfs_dir2_byte_to_db(geo, by));
109}
110
111/*
112 * Convert block and offset to dataptr
113 */
114static inline xfs_dir2_dataptr_t
115xfs_dir2_db_off_to_dataptr(struct xfs_da_geometry *geo, xfs_dir2_db_t db,
116 xfs_dir2_data_aoff_t o)
117{
118 return xfs_dir2_byte_to_dataptr(xfs_dir2_db_off_to_byte(geo, db, o));
119}
120
121/*
122 * Convert block (dablk) to block (DB)
123 */
124static inline xfs_dir2_db_t
125xfs_dir2_da_to_db(struct xfs_da_geometry *geo, xfs_dablk_t da)
126{
127 return (xfs_dir2_db_t)(da >> (geo->blklog - geo->fsblog));
128}
129
130/*
131 * Convert block (dablk) to byte offset in space
132 */
133static inline xfs_dir2_off_t
134xfs_dir2_da_to_byte(struct xfs_da_geometry *geo, xfs_dablk_t da)
135{
136 return xfs_dir2_db_off_to_byte(geo, xfs_dir2_da_to_db(geo, da), 0);
137}
138
139/*
140 * Directory tail pointer accessor functions. Based on block geometry.
141 */
142static inline struct xfs_dir2_block_tail *
143xfs_dir2_block_tail_p(struct xfs_da_geometry *geo, struct xfs_dir2_data_hdr *hdr)
144{
145 return ((struct xfs_dir2_block_tail *)
146 ((char *)hdr + geo->blksize)) - 1;
147}
148
149static inline struct xfs_dir2_leaf_tail *
150xfs_dir2_leaf_tail_p(struct xfs_da_geometry *geo, struct xfs_dir2_leaf *lp)
151{
152 return (struct xfs_dir2_leaf_tail *)
153 ((char *)lp + geo->blksize -
154 sizeof(struct xfs_dir2_leaf_tail));
155}
156
157/* xfs_dir2.c */
158extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino);
159extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space,
160 xfs_dir2_db_t *dbp);
161extern int xfs_dir_cilookup_result(struct xfs_da_args *args,
162 const unsigned char *name, int len);
163
164#define S_SHIFT 12
165extern const unsigned char xfs_mode_to_ftype[];
166
167extern unsigned char xfs_dir3_get_dtype(struct xfs_mount *mp,
168 __uint8_t filetype);
169
170
171/* xfs_dir2_block.c */
172extern int xfs_dir3_block_read(struct xfs_trans *tp, struct xfs_inode *dp,
173 struct xfs_buf **bpp);
174extern int xfs_dir2_block_addname(struct xfs_da_args *args);
175extern int xfs_dir2_block_lookup(struct xfs_da_args *args);
176extern int xfs_dir2_block_removename(struct xfs_da_args *args);
177extern int xfs_dir2_block_replace(struct xfs_da_args *args);
178extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args,
179 struct xfs_buf *lbp, struct xfs_buf *dbp);
180
181/* xfs_dir2_data.c */
182#ifdef DEBUG
183#define xfs_dir3_data_check(dp,bp) __xfs_dir3_data_check(dp, bp);
184#else
185#define xfs_dir3_data_check(dp,bp)
186#endif
187
188extern int __xfs_dir3_data_check(struct xfs_inode *dp, struct xfs_buf *bp);
189extern int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp,
190 xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp);
191extern int xfs_dir3_data_readahead(struct xfs_inode *dp, xfs_dablk_t bno,
192 xfs_daddr_t mapped_bno);
193
194extern struct xfs_dir2_data_free *
195xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr,
196 struct xfs_dir2_data_free *bf, struct xfs_dir2_data_unused *dup,
197 int *loghead);
198extern int xfs_dir3_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno,
199 struct xfs_buf **bpp);
200
201/* xfs_dir2_leaf.c */
202extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp,
203 xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp);
204extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args,
205 struct xfs_buf *dbp);
206extern int xfs_dir2_leaf_addname(struct xfs_da_args *args);
207extern void xfs_dir3_leaf_compact(struct xfs_da_args *args,
208 struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_buf *bp);
209extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr,
210 struct xfs_dir2_leaf_entry *ents, int *indexp,
211 int *lowstalep, int *highstalep, int *lowlogp, int *highlogp);
212extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno,
213 struct xfs_buf **bpp, __uint16_t magic);
214extern void xfs_dir3_leaf_log_ents(struct xfs_da_args *args,
215 struct xfs_buf *bp, int first, int last);
216extern void xfs_dir3_leaf_log_header(struct xfs_da_args *args,
217 struct xfs_buf *bp);
218extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args);
219extern int xfs_dir2_leaf_removename(struct xfs_da_args *args);
220extern int xfs_dir2_leaf_replace(struct xfs_da_args *args);
221extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args,
222 struct xfs_buf *lbp);
223extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args,
224 struct xfs_buf *lbp, xfs_dir2_db_t db);
225extern struct xfs_dir2_leaf_entry *
226xfs_dir3_leaf_find_entry(struct xfs_dir3_icleaf_hdr *leafhdr,
227 struct xfs_dir2_leaf_entry *ents, int index, int compact,
228 int lowstale, int highstale, int *lfloglow, int *lfloghigh);
229extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state);
230
231extern bool xfs_dir3_leaf_check_int(struct xfs_mount *mp, struct xfs_inode *dp,
232 struct xfs_dir3_icleaf_hdr *hdr, struct xfs_dir2_leaf *leaf);
233
234/* xfs_dir2_node.c */
235extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args,
236 struct xfs_buf *lbp);
237extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_inode *dp,
238 struct xfs_buf *bp, int *count);
239extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp,
240 struct xfs_da_args *args, int *indexp,
241 struct xfs_da_state *state);
242extern int xfs_dir2_leafn_order(struct xfs_inode *dp, struct xfs_buf *leaf1_bp,
243 struct xfs_buf *leaf2_bp);
244extern int xfs_dir2_leafn_split(struct xfs_da_state *state,
245 struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk);
246extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action);
247extern void xfs_dir2_leafn_unbalance(struct xfs_da_state *state,
248 struct xfs_da_state_blk *drop_blk,
249 struct xfs_da_state_blk *save_blk);
250extern int xfs_dir2_node_addname(struct xfs_da_args *args);
251extern int xfs_dir2_node_lookup(struct xfs_da_args *args);
252extern int xfs_dir2_node_removename(struct xfs_da_args *args);
253extern int xfs_dir2_node_replace(struct xfs_da_args *args);
254extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo,
255 int *rvalp);
256extern int xfs_dir2_free_read(struct xfs_trans *tp, struct xfs_inode *dp,
257 xfs_dablk_t fbno, struct xfs_buf **bpp);
258
259/* xfs_dir2_sf.c */
260extern int xfs_dir2_block_sfsize(struct xfs_inode *dp,
261 struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp);
262extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp,
263 int size, xfs_dir2_sf_hdr_t *sfhp);
264extern int xfs_dir2_sf_addname(struct xfs_da_args *args);
265extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino);
266extern int xfs_dir2_sf_lookup(struct xfs_da_args *args);
267extern int xfs_dir2_sf_removename(struct xfs_da_args *args);
268extern int xfs_dir2_sf_replace(struct xfs_da_args *args);
269
270/* xfs_dir2_readdir.c */
271extern int xfs_readdir(struct xfs_inode *dp, struct dir_context *ctx,
272 size_t bufsize);
273
274#endif /* __XFS_DIR2_PRIV_H__ */
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-08 20:58:08 -0500