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_PRIV_H__
19 #define __XFS_DIR2_PRIV_H__
24 * Directory offset/block conversion functions.
26 * DB blocks here are logical directory block numbers, not filesystem blocks.
30 * Convert dataptr to byte in file space
32 static inline xfs_dir2_off_t
33 xfs_dir2_dataptr_to_byte(xfs_dir2_dataptr_t dp)
35 return (xfs_dir2_off_t)dp << XFS_DIR2_DATA_ALIGN_LOG;
39 * Convert byte in file space to dataptr. It had better be aligned.
41 static inline xfs_dir2_dataptr_t
42 xfs_dir2_byte_to_dataptr(xfs_dir2_off_t by)
44 return (xfs_dir2_dataptr_t)(by >> XFS_DIR2_DATA_ALIGN_LOG);
48 * Convert byte in space to (DB) block
50 static inline xfs_dir2_db_t
51 xfs_dir2_byte_to_db(struct xfs_mount *mp, xfs_dir2_off_t by)
53 return (xfs_dir2_db_t)
54 (by >> (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog));
58 * Convert dataptr to a block number
60 static inline xfs_dir2_db_t
61 xfs_dir2_dataptr_to_db(struct xfs_mount *mp, xfs_dir2_dataptr_t dp)
63 return xfs_dir2_byte_to_db(mp, xfs_dir2_dataptr_to_byte(dp));
67 * Convert byte in space to offset in a block
69 static inline xfs_dir2_data_aoff_t
70 xfs_dir2_byte_to_off(struct xfs_da_geometry *geo, xfs_dir2_off_t by)
72 return (xfs_dir2_data_aoff_t)(by & (geo->blksize - 1));
76 * Convert dataptr to a byte offset in a block
78 static inline xfs_dir2_data_aoff_t
79 xfs_dir2_dataptr_to_off(struct xfs_mount *mp, xfs_dir2_dataptr_t dp)
81 return xfs_dir2_byte_to_off(mp->m_dir_geo, xfs_dir2_dataptr_to_byte(dp));
85 * Convert block and offset to byte in space
87 static inline xfs_dir2_off_t
88 xfs_dir2_db_off_to_byte(struct xfs_da_geometry *geo, xfs_dir2_db_t db,
89 xfs_dir2_data_aoff_t o)
91 return ((xfs_dir2_off_t)db << geo->blklog) + o;
95 * Convert block (DB) to block (dablk)
97 static inline xfs_dablk_t
98 xfs_dir2_db_to_da(struct xfs_mount *mp, xfs_dir2_db_t db)
100 return (xfs_dablk_t)(db << mp->m_sb.sb_dirblklog);
104 * Convert byte in space to (DA) block
106 static inline xfs_dablk_t
107 xfs_dir2_byte_to_da(struct xfs_mount *mp, xfs_dir2_off_t by)
109 return xfs_dir2_db_to_da(mp, xfs_dir2_byte_to_db(mp, by));
113 * Convert block and offset to dataptr
115 static inline xfs_dir2_dataptr_t
116 xfs_dir2_db_off_to_dataptr(struct xfs_mount *mp, xfs_dir2_db_t db,
117 xfs_dir2_data_aoff_t o)
119 return xfs_dir2_byte_to_dataptr(
120 xfs_dir2_db_off_to_byte(mp->m_dir_geo, db, o));
124 * Convert block (dablk) to block (DB)
126 static inline xfs_dir2_db_t
127 xfs_dir2_da_to_db(struct xfs_mount *mp, xfs_dablk_t da)
129 return (xfs_dir2_db_t)(da >> mp->m_sb.sb_dirblklog);
133 * Convert block (dablk) to byte offset in space
135 static inline xfs_dir2_off_t
136 xfs_dir2_da_to_byte(struct xfs_mount *mp, xfs_dablk_t da)
138 return xfs_dir2_db_off_to_byte(mp->m_dir_geo,
139 xfs_dir2_da_to_db(mp, da), 0);
143 * Directory tail pointer accessor functions. Based on block geometry.
145 static inline struct xfs_dir2_block_tail *
146 xfs_dir2_block_tail_p(struct xfs_mount *mp, struct xfs_dir2_data_hdr *hdr)
148 return ((struct xfs_dir2_block_tail *)
149 ((char *)hdr + mp->m_dirblksize)) - 1;
152 static inline struct xfs_dir2_leaf_tail *
153 xfs_dir2_leaf_tail_p(struct xfs_mount *mp, struct xfs_dir2_leaf *lp)
155 return (struct xfs_dir2_leaf_tail *)
156 ((char *)lp + mp->m_dirblksize -
157 sizeof(struct xfs_dir2_leaf_tail));
161 extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino);
162 extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space,
164 extern int xfs_dir_cilookup_result(struct xfs_da_args *args,
165 const unsigned char *name, int len);
168 extern const unsigned char xfs_mode_to_ftype[];
170 extern unsigned char xfs_dir3_get_dtype(struct xfs_mount *mp,
174 /* xfs_dir2_block.c */
175 extern int xfs_dir3_block_read(struct xfs_trans *tp, struct xfs_inode *dp,
176 struct xfs_buf **bpp);
177 extern int xfs_dir2_block_addname(struct xfs_da_args *args);
178 extern int xfs_dir2_block_lookup(struct xfs_da_args *args);
179 extern int xfs_dir2_block_removename(struct xfs_da_args *args);
180 extern int xfs_dir2_block_replace(struct xfs_da_args *args);
181 extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args,
182 struct xfs_buf *lbp, struct xfs_buf *dbp);
184 /* xfs_dir2_data.c */
186 #define xfs_dir3_data_check(dp,bp) __xfs_dir3_data_check(dp, bp);
188 #define xfs_dir3_data_check(dp,bp)
191 extern int __xfs_dir3_data_check(struct xfs_inode *dp, struct xfs_buf *bp);
192 extern int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp,
193 xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp);
194 extern int xfs_dir3_data_readahead(struct xfs_inode *dp, xfs_dablk_t bno,
195 xfs_daddr_t mapped_bno);
197 extern struct xfs_dir2_data_free *
198 xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr,
199 struct xfs_dir2_data_free *bf, struct xfs_dir2_data_unused *dup,
201 extern int xfs_dir3_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno,
202 struct xfs_buf **bpp);
204 /* xfs_dir2_leaf.c */
205 extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp,
206 xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp);
207 extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args,
208 struct xfs_buf *dbp);
209 extern int xfs_dir2_leaf_addname(struct xfs_da_args *args);
210 extern void xfs_dir3_leaf_compact(struct xfs_da_args *args,
211 struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_buf *bp);
212 extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr,
213 struct xfs_dir2_leaf_entry *ents, int *indexp,
214 int *lowstalep, int *highstalep, int *lowlogp, int *highlogp);
215 extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno,
216 struct xfs_buf **bpp, __uint16_t magic);
217 extern void xfs_dir3_leaf_log_ents(struct xfs_trans *tp, struct xfs_inode *dp,
218 struct xfs_buf *bp, int first, int last);
219 extern void xfs_dir3_leaf_log_header(struct xfs_trans *tp, struct xfs_inode *dp,
221 extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args);
222 extern int xfs_dir2_leaf_removename(struct xfs_da_args *args);
223 extern int xfs_dir2_leaf_replace(struct xfs_da_args *args);
224 extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args,
225 struct xfs_buf *lbp);
226 extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args,
227 struct xfs_buf *lbp, xfs_dir2_db_t db);
228 extern struct xfs_dir2_leaf_entry *
229 xfs_dir3_leaf_find_entry(struct xfs_dir3_icleaf_hdr *leafhdr,
230 struct xfs_dir2_leaf_entry *ents, int index, int compact,
231 int lowstale, int highstale, int *lfloglow, int *lfloghigh);
232 extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state);
234 extern bool xfs_dir3_leaf_check_int(struct xfs_mount *mp, struct xfs_inode *dp,
235 struct xfs_dir3_icleaf_hdr *hdr, struct xfs_dir2_leaf *leaf);
237 /* xfs_dir2_node.c */
238 extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args,
239 struct xfs_buf *lbp);
240 extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_inode *dp,
241 struct xfs_buf *bp, int *count);
242 extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp,
243 struct xfs_da_args *args, int *indexp,
244 struct xfs_da_state *state);
245 extern int xfs_dir2_leafn_order(struct xfs_inode *dp, struct xfs_buf *leaf1_bp,
246 struct xfs_buf *leaf2_bp);
247 extern int xfs_dir2_leafn_split(struct xfs_da_state *state,
248 struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk);
249 extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action);
250 extern void xfs_dir2_leafn_unbalance(struct xfs_da_state *state,
251 struct xfs_da_state_blk *drop_blk,
252 struct xfs_da_state_blk *save_blk);
253 extern int xfs_dir2_node_addname(struct xfs_da_args *args);
254 extern int xfs_dir2_node_lookup(struct xfs_da_args *args);
255 extern int xfs_dir2_node_removename(struct xfs_da_args *args);
256 extern int xfs_dir2_node_replace(struct xfs_da_args *args);
257 extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo,
259 extern int xfs_dir2_free_read(struct xfs_trans *tp, struct xfs_inode *dp,
260 xfs_dablk_t fbno, struct xfs_buf **bpp);
263 extern int xfs_dir2_block_sfsize(struct xfs_inode *dp,
264 struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp);
265 extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp,
266 int size, xfs_dir2_sf_hdr_t *sfhp);
267 extern int xfs_dir2_sf_addname(struct xfs_da_args *args);
268 extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino);
269 extern int xfs_dir2_sf_lookup(struct xfs_da_args *args);
270 extern int xfs_dir2_sf_removename(struct xfs_da_args *args);
271 extern int xfs_dir2_sf_replace(struct xfs_da_args *args);
273 /* xfs_dir2_readdir.c */
274 extern int xfs_readdir(struct xfs_inode *dp, struct dir_context *ctx,
277 #endif /* __XFS_DIR2_PRIV_H__ */