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57926640 CH |
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 | ||
0cb97766 DC |
21 | struct dir_context; |
22 | ||
892e3f34 DC |
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 | */ | |
32 | static inline xfs_dir2_off_t | |
33 | xfs_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 | */ | |
41 | static inline xfs_dir2_dataptr_t | |
42 | xfs_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 | */ | |
50 | static inline xfs_dir2_db_t | |
30028030 | 51 | xfs_dir2_byte_to_db(struct xfs_da_geometry *geo, xfs_dir2_off_t by) |
892e3f34 | 52 | { |
30028030 | 53 | return (xfs_dir2_db_t)(by >> geo->blklog); |
892e3f34 DC |
54 | } |
55 | ||
56 | /* | |
57 | * Convert dataptr to a block number | |
58 | */ | |
59 | static inline xfs_dir2_db_t | |
30028030 | 60 | xfs_dir2_dataptr_to_db(struct xfs_da_geometry *geo, xfs_dir2_dataptr_t dp) |
892e3f34 | 61 | { |
30028030 | 62 | return xfs_dir2_byte_to_db(geo, xfs_dir2_dataptr_to_byte(dp)); |
892e3f34 DC |
63 | } |
64 | ||
65 | /* | |
66 | * Convert byte in space to offset in a block | |
67 | */ | |
68 | static inline xfs_dir2_data_aoff_t | |
9b3b5522 | 69 | xfs_dir2_byte_to_off(struct xfs_da_geometry *geo, xfs_dir2_off_t by) |
892e3f34 | 70 | { |
9b3b5522 | 71 | return (xfs_dir2_data_aoff_t)(by & (geo->blksize - 1)); |
892e3f34 DC |
72 | } |
73 | ||
74 | /* | |
75 | * Convert dataptr to a byte offset in a block | |
76 | */ | |
77 | static inline xfs_dir2_data_aoff_t | |
30028030 | 78 | xfs_dir2_dataptr_to_off(struct xfs_da_geometry *geo, xfs_dir2_dataptr_t dp) |
892e3f34 | 79 | { |
30028030 | 80 | return xfs_dir2_byte_to_off(geo, xfs_dir2_dataptr_to_byte(dp)); |
892e3f34 DC |
81 | } |
82 | ||
83 | /* | |
84 | * Convert block and offset to byte in space | |
85 | */ | |
86 | static inline xfs_dir2_off_t | |
9b3b5522 | 87 | xfs_dir2_db_off_to_byte(struct xfs_da_geometry *geo, xfs_dir2_db_t db, |
892e3f34 DC |
88 | xfs_dir2_data_aoff_t o) |
89 | { | |
9b3b5522 | 90 | return ((xfs_dir2_off_t)db << geo->blklog) + o; |
892e3f34 DC |
91 | } |
92 | ||
93 | /* | |
94 | * Convert block (DB) to block (dablk) | |
95 | */ | |
96 | static inline xfs_dablk_t | |
2998ab1d | 97 | xfs_dir2_db_to_da(struct xfs_da_geometry *geo, xfs_dir2_db_t db) |
892e3f34 | 98 | { |
2998ab1d | 99 | return (xfs_dablk_t)(db << (geo->blklog - geo->fsblog)); |
892e3f34 DC |
100 | } |
101 | ||
102 | /* | |
103 | * Convert byte in space to (DA) block | |
104 | */ | |
105 | static inline xfs_dablk_t | |
30028030 | 106 | xfs_dir2_byte_to_da(struct xfs_da_geometry *geo, xfs_dir2_off_t by) |
892e3f34 | 107 | { |
30028030 | 108 | return xfs_dir2_db_to_da(geo, xfs_dir2_byte_to_db(geo, by)); |
892e3f34 DC |
109 | } |
110 | ||
111 | /* | |
112 | * Convert block and offset to dataptr | |
113 | */ | |
114 | static inline xfs_dir2_dataptr_t | |
30028030 | 115 | xfs_dir2_db_off_to_dataptr(struct xfs_da_geometry *geo, xfs_dir2_db_t db, |
892e3f34 DC |
116 | xfs_dir2_data_aoff_t o) |
117 | { | |
30028030 | 118 | return xfs_dir2_byte_to_dataptr(xfs_dir2_db_off_to_byte(geo, db, o)); |
892e3f34 DC |
119 | } |
120 | ||
121 | /* | |
122 | * Convert block (dablk) to block (DB) | |
123 | */ | |
124 | static inline xfs_dir2_db_t | |
2998ab1d | 125 | xfs_dir2_da_to_db(struct xfs_da_geometry *geo, xfs_dablk_t da) |
892e3f34 | 126 | { |
2998ab1d | 127 | return (xfs_dir2_db_t)(da >> (geo->blklog - geo->fsblog)); |
892e3f34 DC |
128 | } |
129 | ||
130 | /* | |
131 | * Convert block (dablk) to byte offset in space | |
132 | */ | |
133 | static inline xfs_dir2_off_t | |
2998ab1d | 134 | xfs_dir2_da_to_byte(struct xfs_da_geometry *geo, xfs_dablk_t da) |
892e3f34 | 135 | { |
2998ab1d | 136 | return xfs_dir2_db_off_to_byte(geo, xfs_dir2_da_to_db(geo, da), 0); |
892e3f34 DC |
137 | } |
138 | ||
139 | /* | |
140 | * Directory tail pointer accessor functions. Based on block geometry. | |
141 | */ | |
142 | static inline struct xfs_dir2_block_tail * | |
8f66193c | 143 | xfs_dir2_block_tail_p(struct xfs_da_geometry *geo, struct xfs_dir2_data_hdr *hdr) |
892e3f34 DC |
144 | { |
145 | return ((struct xfs_dir2_block_tail *) | |
8f66193c | 146 | ((char *)hdr + geo->blksize)) - 1; |
892e3f34 DC |
147 | } |
148 | ||
149 | static inline struct xfs_dir2_leaf_tail * | |
8f66193c | 150 | xfs_dir2_leaf_tail_p(struct xfs_da_geometry *geo, struct xfs_dir2_leaf *lp) |
892e3f34 DC |
151 | { |
152 | return (struct xfs_dir2_leaf_tail *) | |
8f66193c | 153 | ((char *)lp + geo->blksize - |
892e3f34 DC |
154 | sizeof(struct xfs_dir2_leaf_tail)); |
155 | } | |
156 | ||
57926640 CH |
157 | /* xfs_dir2.c */ |
158 | extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino); | |
57926640 CH |
159 | extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, |
160 | xfs_dir2_db_t *dbp); | |
57926640 CH |
161 | extern int xfs_dir_cilookup_result(struct xfs_da_args *args, |
162 | const unsigned char *name, int len); | |
163 | ||
0cb97766 DC |
164 | #define S_SHIFT 12 |
165 | extern const unsigned char xfs_mode_to_ftype[]; | |
166 | ||
167 | extern unsigned char xfs_dir3_get_dtype(struct xfs_mount *mp, | |
168 | __uint8_t filetype); | |
169 | ||
170 | ||
57926640 | 171 | /* xfs_dir2_block.c */ |
4a8af273 DC |
172 | extern int xfs_dir3_block_read(struct xfs_trans *tp, struct xfs_inode *dp, |
173 | struct xfs_buf **bpp); | |
57926640 | 174 | extern int xfs_dir2_block_addname(struct xfs_da_args *args); |
57926640 CH |
175 | extern int xfs_dir2_block_lookup(struct xfs_da_args *args); |
176 | extern int xfs_dir2_block_removename(struct xfs_da_args *args); | |
177 | extern int xfs_dir2_block_replace(struct xfs_da_args *args); | |
178 | extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args, | |
1d9025e5 | 179 | struct xfs_buf *lbp, struct xfs_buf *dbp); |
57926640 CH |
180 | |
181 | /* xfs_dir2_data.c */ | |
182 | #ifdef DEBUG | |
33363fee | 183 | #define xfs_dir3_data_check(dp,bp) __xfs_dir3_data_check(dp, bp); |
57926640 | 184 | #else |
33363fee | 185 | #define xfs_dir3_data_check(dp,bp) |
57926640 | 186 | #endif |
1813dd64 | 187 | |
33363fee DC |
188 | extern int __xfs_dir3_data_check(struct xfs_inode *dp, struct xfs_buf *bp); |
189 | extern int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp, | |
e4813572 | 190 | xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp); |
9df2dd0b ES |
191 | extern int xfs_dir3_data_readahead(struct xfs_inode *dp, xfs_dablk_t bno, |
192 | xfs_daddr_t mapped_bno); | |
82025d7f | 193 | |
57926640 CH |
194 | extern struct xfs_dir2_data_free * |
195 | xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr, | |
2ca98774 DC |
196 | struct xfs_dir2_data_free *bf, struct xfs_dir2_data_unused *dup, |
197 | int *loghead); | |
f5f3d9b0 | 198 | extern int xfs_dir3_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno, |
1d9025e5 | 199 | struct xfs_buf **bpp); |
57926640 CH |
200 | |
201 | /* xfs_dir2_leaf.c */ | |
24df33b4 | 202 | extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp, |
e6f7667c | 203 | xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp); |
57926640 | 204 | extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args, |
1d9025e5 | 205 | struct xfs_buf *dbp); |
57926640 | 206 | extern int xfs_dir2_leaf_addname(struct xfs_da_args *args); |
24df33b4 DC |
207 | extern void xfs_dir3_leaf_compact(struct xfs_da_args *args, |
208 | struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_buf *bp); | |
209 | extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr, | |
210 | struct xfs_dir2_leaf_entry *ents, int *indexp, | |
57926640 | 211 | int *lowstalep, int *highstalep, int *lowlogp, int *highlogp); |
24df33b4 DC |
212 | extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno, |
213 | struct xfs_buf **bpp, __uint16_t magic); | |
4141956a DC |
214 | extern void xfs_dir3_leaf_log_ents(struct xfs_trans *tp, struct xfs_inode *dp, |
215 | struct xfs_buf *bp, int first, int last); | |
216 | extern void xfs_dir3_leaf_log_header(struct xfs_trans *tp, struct xfs_inode *dp, | |
1d9025e5 | 217 | struct xfs_buf *bp); |
57926640 CH |
218 | extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args); |
219 | extern int xfs_dir2_leaf_removename(struct xfs_da_args *args); | |
220 | extern int xfs_dir2_leaf_replace(struct xfs_da_args *args); | |
221 | extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args, | |
1d9025e5 | 222 | struct xfs_buf *lbp); |
57926640 | 223 | extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args, |
1d9025e5 | 224 | struct xfs_buf *lbp, xfs_dir2_db_t db); |
57926640 | 225 | extern struct xfs_dir2_leaf_entry * |
24df33b4 DC |
226 | xfs_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); | |
57926640 CH |
229 | extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state); |
230 | ||
4141956a | 231 | extern bool xfs_dir3_leaf_check_int(struct xfs_mount *mp, struct xfs_inode *dp, |
24df33b4 DC |
232 | struct xfs_dir3_icleaf_hdr *hdr, struct xfs_dir2_leaf *leaf); |
233 | ||
57926640 CH |
234 | /* xfs_dir2_node.c */ |
235 | extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args, | |
1d9025e5 | 236 | struct xfs_buf *lbp); |
4141956a DC |
237 | extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_inode *dp, |
238 | struct xfs_buf *bp, int *count); | |
1d9025e5 | 239 | extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp, |
57926640 CH |
240 | struct xfs_da_args *args, int *indexp, |
241 | struct xfs_da_state *state); | |
4141956a | 242 | extern int xfs_dir2_leafn_order(struct xfs_inode *dp, struct xfs_buf *leaf1_bp, |
1d9025e5 | 243 | struct xfs_buf *leaf2_bp); |
57926640 CH |
244 | extern int xfs_dir2_leafn_split(struct xfs_da_state *state, |
245 | struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk); | |
246 | extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action); | |
247 | extern 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); | |
250 | extern int xfs_dir2_node_addname(struct xfs_da_args *args); | |
251 | extern int xfs_dir2_node_lookup(struct xfs_da_args *args); | |
252 | extern int xfs_dir2_node_removename(struct xfs_da_args *args); | |
253 | extern int xfs_dir2_node_replace(struct xfs_da_args *args); | |
254 | extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo, | |
255 | int *rvalp); | |
2025207c DC |
256 | extern int xfs_dir2_free_read(struct xfs_trans *tp, struct xfs_inode *dp, |
257 | xfs_dablk_t fbno, struct xfs_buf **bpp); | |
57926640 CH |
258 | |
259 | /* xfs_dir2_sf.c */ | |
57926640 CH |
260 | extern int xfs_dir2_block_sfsize(struct xfs_inode *dp, |
261 | struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp); | |
1d9025e5 | 262 | extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp, |
57926640 CH |
263 | int size, xfs_dir2_sf_hdr_t *sfhp); |
264 | extern int xfs_dir2_sf_addname(struct xfs_da_args *args); | |
265 | extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino); | |
57926640 CH |
266 | extern int xfs_dir2_sf_lookup(struct xfs_da_args *args); |
267 | extern int xfs_dir2_sf_removename(struct xfs_da_args *args); | |
268 | extern int xfs_dir2_sf_replace(struct xfs_da_args *args); | |
269 | ||
c24b5dfa DC |
270 | /* xfs_dir2_readdir.c */ |
271 | extern int xfs_readdir(struct xfs_inode *dp, struct dir_context *ctx, | |
272 | size_t bufsize); | |
273 | ||
57926640 | 274 | #endif /* __XFS_DIR2_PRIV_H__ */ |