| | 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_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_bmap_free; |
| | 26 | struct xfs_inode; |
| | 27 | struct xfs_mount; |
| | 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 | */ |
| | 60 | typedef xfs_off_t xfs_dir2_off_t; |
| | 61 | |
| | 62 | extern struct xfs_name xfs_name_dotdot; |
| | 63 | |
| | 64 | /* |
| | 65 | * Generic directory interface routines |
| | 66 | */ |
| | 67 | extern void xfs_dir_startup(void); |
| | 68 | extern void xfs_dir_mount(struct xfs_mount *mp); |
| | 69 | extern int xfs_dir_isempty(struct xfs_inode *dp); |
| | 70 | extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp, |
| | 71 | struct xfs_inode *pdp); |
| | 72 | extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp, |
| | 73 | struct xfs_name *name, xfs_ino_t inum, |
| | 74 | xfs_fsblock_t *first, |
| | 75 | struct xfs_bmap_free *flist, xfs_extlen_t tot); |
| | 76 | extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp, |
| | 77 | struct xfs_name *name, xfs_ino_t *inum, |
| | 78 | struct xfs_name *ci_name); |
| | 79 | extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp, |
| | 80 | struct xfs_name *name, xfs_ino_t ino, |
| | 81 | xfs_fsblock_t *first, |
| | 82 | struct xfs_bmap_free *flist, xfs_extlen_t tot); |
| | 83 | extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp, |
| | 84 | struct xfs_name *name, xfs_ino_t inum, |
| | 85 | xfs_fsblock_t *first, |
| | 86 | struct xfs_bmap_free *flist, xfs_extlen_t tot); |
| | 87 | extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp, |
| | 88 | struct xfs_name *name, uint resblks); |
| | 89 | extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino); |
| | 90 | |
| | 91 | /* |
| | 92 | * Utility routines for v2 directories. |
| | 93 | */ |
| | 94 | extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, |
| | 95 | xfs_dir2_db_t *dbp); |
| | 96 | extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, |
| | 97 | int *vp); |
| | 98 | extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, |
| | 99 | int *vp); |
| | 100 | extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, |
| | 101 | struct xfs_dabuf *bp); |
| | 102 | |
| | 103 | extern int xfs_dir_cilookup_result(struct xfs_da_args *args, const char *name, |
| | 104 | int len); |
| | 105 | |
| | 106 | #endif /* __XFS_DIR2_H__ */ |
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