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, 104 const unsigned char *name, int len); 105 106 #endif /* __XFS_DIR2_H__ */ 107