LXR linux/fs/xfs/xfs_dir2

   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_PRIV_H__
  19#define __XFS_DIR2_PRIV_H__
  20
  21/* xfs_dir2.c */
  22extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino);
  23extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r);
  24extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r);
  25extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space,
  26                                xfs_dir2_db_t *dbp);
  27extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db,
  28                                struct xfs_buf *bp);
  29extern int xfs_dir_cilookup_result(struct xfs_da_args *args,
  30                                const unsigned char *name, int len);
  31
  32/* xfs_dir2_block.c */
  33extern const struct xfs_buf_ops xfs_dir3_block_buf_ops;
  34
  35extern int xfs_dir2_block_addname(struct xfs_da_args *args);
  36extern int xfs_dir2_block_getdents(struct xfs_inode *dp, void *dirent,
  37                xfs_off_t *offset, filldir_t filldir);
  38extern int xfs_dir2_block_lookup(struct xfs_da_args *args);
  39extern int xfs_dir2_block_removename(struct xfs_da_args *args);
  40extern int xfs_dir2_block_replace(struct xfs_da_args *args);
  41extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args,
  42                struct xfs_buf *lbp, struct xfs_buf *dbp);
  43
  44/* xfs_dir2_data.c */
  45#ifdef DEBUG
  46#define xfs_dir3_data_check(dp,bp) __xfs_dir3_data_check(dp, bp);
  47#else
  48#define xfs_dir3_data_check(dp,bp)
  49#endif
  50
  51extern const struct xfs_buf_ops xfs_dir3_data_buf_ops;
  52extern const struct xfs_buf_ops xfs_dir3_free_buf_ops;
  53
  54extern int __xfs_dir3_data_check(struct xfs_inode *dp, struct xfs_buf *bp);
  55extern int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp,
  56                xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp);
  57extern int xfs_dir3_data_readahead(struct xfs_trans *tp, struct xfs_inode *dp,
  58                xfs_dablk_t bno, xfs_daddr_t mapped_bno);
  59
  60extern struct xfs_dir2_data_free *
  61xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr,
  62                struct xfs_dir2_data_unused *dup, int *loghead);
  63extern void xfs_dir2_data_freescan(struct xfs_mount *mp,
  64                struct xfs_dir2_data_hdr *hdr, int *loghead);
  65extern int xfs_dir3_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno,
  66                struct xfs_buf **bpp);
  67extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_buf *bp,
  68                struct xfs_dir2_data_entry *dep);
  69extern void xfs_dir2_data_log_header(struct xfs_trans *tp,
  70                struct xfs_buf *bp);
  71extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_buf *bp,
  72                struct xfs_dir2_data_unused *dup);
  73extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_buf *bp,
  74                xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len,
  75                int *needlogp, int *needscanp);
  76extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_buf *bp,
  77                struct xfs_dir2_data_unused *dup, xfs_dir2_data_aoff_t offset,
  78                xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp);
  79
  80/* xfs_dir2_leaf.c */
  81extern const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops;
  82extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops;
  83
  84extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp,
  85                xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp);
  86extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args,
  87                struct xfs_buf *dbp);
  88extern int xfs_dir2_leaf_addname(struct xfs_da_args *args);
  89extern void xfs_dir3_leaf_compact(struct xfs_da_args *args,
  90                struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_buf *bp);
  91extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr,
  92                struct xfs_dir2_leaf_entry *ents, int *indexp,
  93                int *lowstalep, int *highstalep, int *lowlogp, int *highlogp);
  94extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, void *dirent,
  95                size_t bufsize, xfs_off_t *offset, filldir_t filldir);
  96extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno,
  97                struct xfs_buf **bpp, __uint16_t magic);
  98extern void xfs_dir3_leaf_log_ents(struct xfs_trans *tp, struct xfs_buf *bp,
  99                int first, int last);
 100extern void xfs_dir3_leaf_log_header(struct xfs_trans *tp,
 101                struct xfs_buf *bp);
 102extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args);
 103extern int xfs_dir2_leaf_removename(struct xfs_da_args *args);
 104extern int xfs_dir2_leaf_replace(struct xfs_da_args *args);
 105extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args,
 106                struct xfs_buf *lbp);
 107extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args,
 108                struct xfs_buf *lbp, xfs_dir2_db_t db);
 109extern struct xfs_dir2_leaf_entry *
 110xfs_dir3_leaf_find_entry(struct xfs_dir3_icleaf_hdr *leafhdr,
 111                struct xfs_dir2_leaf_entry *ents, int index, int compact,
 112                int lowstale, int highstale, int *lfloglow, int *lfloghigh);
 113extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state);
 114
 115extern void xfs_dir3_leaf_hdr_from_disk(struct xfs_dir3_icleaf_hdr *to,
 116                struct xfs_dir2_leaf *from);
 117extern void xfs_dir3_leaf_hdr_to_disk(struct xfs_dir2_leaf *to,
 118                struct xfs_dir3_icleaf_hdr *from);
 119extern bool xfs_dir3_leaf_check_int(struct xfs_mount *mp,
 120                struct xfs_dir3_icleaf_hdr *hdr, struct xfs_dir2_leaf *leaf);
 121
 122/* xfs_dir2_node.c */
 123extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args,
 124                struct xfs_buf *lbp);
 125extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_buf *bp, int *count);
 126extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp,
 127                struct xfs_da_args *args, int *indexp,
 128                struct xfs_da_state *state);
 129extern int xfs_dir2_leafn_order(struct xfs_buf *leaf1_bp,
 130                struct xfs_buf *leaf2_bp);
 131extern int xfs_dir2_leafn_split(struct xfs_da_state *state,
 132        struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk);
 133extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action);
 134extern void xfs_dir2_leafn_unbalance(struct xfs_da_state *state,
 135                struct xfs_da_state_blk *drop_blk,
 136                struct xfs_da_state_blk *save_blk);
 137extern int xfs_dir2_node_addname(struct xfs_da_args *args);
 138extern int xfs_dir2_node_lookup(struct xfs_da_args *args);
 139extern int xfs_dir2_node_removename(struct xfs_da_args *args);
 140extern int xfs_dir2_node_replace(struct xfs_da_args *args);
 141extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo,
 142                int *rvalp);
 143extern int xfs_dir2_free_read(struct xfs_trans *tp, struct xfs_inode *dp,
 144                xfs_dablk_t fbno, struct xfs_buf **bpp);
 145
 146/* xfs_dir2_sf.c */
 147extern xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf_hdr *sfp);
 148extern xfs_ino_t xfs_dir2_sfe_get_ino(struct xfs_dir2_sf_hdr *sfp,
 149                struct xfs_dir2_sf_entry *sfep);
 150extern int xfs_dir2_block_sfsize(struct xfs_inode *dp,
 151                struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp);
 152extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp,
 153                int size, xfs_dir2_sf_hdr_t *sfhp);
 154extern int xfs_dir2_sf_addname(struct xfs_da_args *args);
 155extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino);
 156extern int xfs_dir2_sf_getdents(struct xfs_inode *dp, void *dirent,
 157                xfs_off_t *offset, filldir_t filldir);
 158extern int xfs_dir2_sf_lookup(struct xfs_da_args *args);
 159extern int xfs_dir2_sf_removename(struct xfs_da_args *args);
 160extern int xfs_dir2_sf_replace(struct xfs_da_args *args);
 161
 162#endif /* __XFS_DIR2_PRIV_H__ */
 163