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1da177e4 | 1 | /* |
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2 | * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
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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 | |
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7 | * published by the Free Software Foundation. |
8 | * | |
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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 | * |
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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__ | |
19 | #define __XFS_DIR2_H__ | |
20 | ||
21 | struct uio; | |
22 | struct xfs_dabuf; | |
23 | struct xfs_da_args; | |
24 | struct xfs_dir2_put_args; | |
25 | struct xfs_inode; | |
26 | struct xfs_trans; | |
27 | ||
28 | /* | |
29 | * Directory version 2. | |
30 | * There are 4 possible formats: | |
31 | * shortform | |
32 | * single block - data with embedded leaf at the end | |
33 | * multiple data blocks, single leaf+freeindex block | |
34 | * data blocks, node&leaf blocks (btree), freeindex blocks | |
35 | * | |
36 | * The shortform format is in xfs_dir2_sf.h. | |
37 | * The single block format is in xfs_dir2_block.h. | |
38 | * The data block format is in xfs_dir2_data.h. | |
39 | * The leaf and freeindex block formats are in xfs_dir2_leaf.h. | |
40 | * Node blocks are the same as the other version, in xfs_da_btree.h. | |
41 | */ | |
42 | ||
43 | /* | |
44 | * Byte offset in data block and shortform entry. | |
45 | */ | |
46 | typedef __uint16_t xfs_dir2_data_off_t; | |
47 | #define NULLDATAOFF 0xffffU | |
48 | typedef uint xfs_dir2_data_aoff_t; /* argument form */ | |
49 | ||
50 | /* | |
51 | * Directory block number (logical dirblk in file) | |
52 | */ | |
53 | typedef __uint32_t xfs_dir2_db_t; | |
54 | ||
55 | /* | |
56 | * Byte offset in a directory. | |
57 | */ | |
2d0f864b | 58 | typedef xfs_off_t xfs_dir2_off_t; |
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59 | |
60 | /* | |
61 | * For getdents, argument struct for put routines. | |
62 | */ | |
63 | typedef int (*xfs_dir2_put_t)(struct xfs_dir2_put_args *pa); | |
64 | typedef struct xfs_dir2_put_args { | |
2d0f864b | 65 | xfs_off_t cook; /* cookie of (next) entry */ |
1da177e4 | 66 | xfs_intino_t ino; /* inode number */ |
2d0f864b | 67 | xfs_dirent_t *dbp; /* buffer pointer */ |
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68 | char *name; /* directory entry name */ |
69 | int namelen; /* length of name */ | |
70 | int done; /* output: set if value was stored */ | |
71 | xfs_dir2_put_t put; /* put function ptr (i/o) */ | |
72 | struct uio *uio; /* uio control structure */ | |
73 | } xfs_dir2_put_args_t; | |
74 | ||
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75 | /* |
76 | * Other interfaces used by the rest of the dir v2 code. | |
77 | */ | |
2d0f864b NS |
78 | extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, |
79 | xfs_dir2_db_t *dbp); | |
80 | extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, | |
81 | int *vp); | |
82 | extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, | |
83 | int *vp); | |
84 | extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, | |
85 | struct xfs_dabuf *bp); | |
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86 | |
87 | #endif /* __XFS_DIR2_H__ */ |