projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 7b718769 NS |
2 | * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. | |
| 1da177e4 | 4 | * |
| 7b718769 NS |
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 | |
| 1da177e4 LT |
7 | * published by the Free Software Foundation. |
| 8 | * | |
| 7b718769 NS |
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 | * |
| 7b718769 NS |
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; | |
| f6c2d1fa | 25 | struct xfs_bmap_free; |
| 1da177e4 | 26 | struct xfs_inode; |
| f6c2d1fa | 27 | struct xfs_mount; |
| 1da177e4 LT |
28 | struct xfs_trans; |
| 29 | ||
| 30 | /* | |
| 31 | * Directory version 2. | |
| 32 | * There are 4 possible formats: | |
| 33 | * shortform | |
| 34 | * single block - data with embedded leaf at the end | |
| 35 | * multiple data blocks, single leaf+freeindex block | |
| 36 | * data blocks, node&leaf blocks (btree), freeindex blocks | |
| 37 | * | |
| 38 | * The shortform format is in xfs_dir2_sf.h. | |
| 39 | * The single block format is in xfs_dir2_block.h. | |
| 40 | * The data block format is in xfs_dir2_data.h. | |
| 41 | * The leaf and freeindex block formats are in xfs_dir2_leaf.h. | |
| 42 | * Node blocks are the same as the other version, in xfs_da_btree.h. | |
| 43 | */ | |
| 44 | ||
| 45 | /* | |
| 46 | * Byte offset in data block and shortform entry. | |
| 47 | */ | |
| 48 | typedef __uint16_t xfs_dir2_data_off_t; | |
| 49 | #define NULLDATAOFF 0xffffU | |
| 50 | typedef uint xfs_dir2_data_aoff_t; /* argument form */ | |
| 51 | ||
| 52 | /* | |
| 53 | * Directory block number (logical dirblk in file) | |
| 54 | */ | |
| 55 | typedef __uint32_t xfs_dir2_db_t; | |
| 56 | ||
| 57 | /* | |
| 58 | * Byte offset in a directory. | |
| 59 | */ | |
| 2d0f864b | 60 | typedef xfs_off_t xfs_dir2_off_t; |
| 1da177e4 LT |
61 | |
| 62 | /* | |
| 63 | * For getdents, argument struct for put routines. | |
| 64 | */ | |
| 65 | typedef int (*xfs_dir2_put_t)(struct xfs_dir2_put_args *pa); | |
| 66 | typedef struct xfs_dir2_put_args { | |
| 2d0f864b | 67 | xfs_off_t cook; /* cookie of (next) entry */ |
| 1da177e4 | 68 | xfs_intino_t ino; /* inode number */ |
| 2d0f864b | 69 | xfs_dirent_t *dbp; /* buffer pointer */ |
| 1da177e4 LT |
70 | char *name; /* directory entry name */ |
| 71 | int namelen; /* length of name */ | |
| 72 | int done; /* output: set if value was stored */ | |
| 73 | xfs_dir2_put_t put; /* put function ptr (i/o) */ | |
| 74 | struct uio *uio; /* uio control structure */ | |
| 75 | } xfs_dir2_put_args_t; | |
| 76 | ||
| 1da177e4 | 77 | /* |
| f6c2d1fa NS |
78 | * Generic directory interface routines |
| 79 | */ | |
| 80 | extern void xfs_dir_startup(void); | |
| 81 | extern void xfs_dir_mount(struct xfs_mount *mp); | |
| 82 | extern int xfs_dir_isempty(struct xfs_inode *dp); | |
| 83 | extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 84 | struct xfs_inode *pdp); | |
| 85 | extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 86 | char *name, int namelen, xfs_ino_t inum, | |
| 87 | xfs_fsblock_t *first, | |
| 88 | struct xfs_bmap_free *flist, xfs_extlen_t tot); | |
| 89 | extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 90 | char *name, int namelen, xfs_ino_t *inum); | |
| 91 | extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 92 | char *name, int namelen, xfs_ino_t ino, | |
| 93 | xfs_fsblock_t *first, | |
| 94 | struct xfs_bmap_free *flist, xfs_extlen_t tot); | |
| 95 | extern int xfs_dir_getdents(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 96 | uio_t *uio, int *eofp); | |
| 97 | extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 98 | char *name, int namelen, xfs_ino_t inum, | |
| 99 | xfs_fsblock_t *first, | |
| 100 | struct xfs_bmap_free *flist, xfs_extlen_t tot); | |
| 101 | extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 102 | char *name, int namelen); | |
| 103 | extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino); | |
| 104 | ||
| 105 | /* | |
| 106 | * Utility routines for v2 directories. | |
| 1da177e4 | 107 | */ |
| 2d0f864b NS |
108 | extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, |
| 109 | xfs_dir2_db_t *dbp); | |
| 110 | extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 111 | int *vp); | |
| 112 | extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, | |
| 113 | int *vp); | |
| 114 | extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, | |
| 115 | struct xfs_dabuf *bp); | |
| 1da177e4 LT |
116 | |
| 117 | #endif /* __XFS_DIR2_H__ */ |