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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | /* * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_DIR2_H__ #define __XFS_DIR2_H__ struct uio; struct xfs_dabuf; struct xfs_da_args; struct xfs_dir2_put_args; struct xfs_bmap_free; struct xfs_inode; struct xfs_mount; struct xfs_trans; /* * Directory version 2. * There are 4 possible formats: * shortform * single block - data with embedded leaf at the end * multiple data blocks, single leaf+freeindex block * data blocks, node&leaf blocks (btree), freeindex blocks * * The shortform format is in xfs_dir2_sf.h. * The single block format is in xfs_dir2_block.h. * The data block format is in xfs_dir2_data.h. * The leaf and freeindex block formats are in xfs_dir2_leaf.h. * Node blocks are the same as the other version, in xfs_da_btree.h. */ /* * Byte offset in data block and shortform entry. */ typedef __uint16_t xfs_dir2_data_off_t; #define NULLDATAOFF 0xffffU typedef uint xfs_dir2_data_aoff_t; /* argument form */ /* * Directory block number (logical dirblk in file) */ typedef __uint32_t xfs_dir2_db_t; /* * Byte offset in a directory. */ typedef xfs_off_t xfs_dir2_off_t; extern struct xfs_name xfs_name_dotdot; /* * Generic directory interface routines */ extern void xfs_dir_startup(void); extern void xfs_dir_mount(struct xfs_mount *mp); extern int xfs_dir_isempty(struct xfs_inode *dp); extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_inode *pdp); extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_name *name, xfs_ino_t inum, xfs_fsblock_t *first, struct xfs_bmap_free *flist, xfs_extlen_t tot); extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_name *name, xfs_ino_t *inum, struct xfs_name *ci_name); extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_name *name, xfs_ino_t ino, xfs_fsblock_t *first, struct xfs_bmap_free *flist, xfs_extlen_t tot); extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_name *name, xfs_ino_t inum, xfs_fsblock_t *first, struct xfs_bmap_free *flist, xfs_extlen_t tot); extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_name *name, uint resblks); extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino); /* * Utility routines for v2 directories. */ extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, xfs_dir2_db_t *dbp); extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *vp); extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *vp); extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, struct xfs_dabuf *bp); extern int xfs_dir_cilookup_result(struct xfs_da_args *args, const unsigned char *name, int len); #endif /* __XFS_DIR2_H__ */ |