fs/ocfs2/dir.h

   1 /* -*- mode: c; c-basic-offset: 8; -*-
   2  * vim: noexpandtab sw=8 ts=8 sts=0:
   3  *
   4  * dir.h
   5  *
   6  * Function prototypes
   7  *
   8  * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2 of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public
  21  * License along with this program; if not, write to the
  22  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23  * Boston, MA 021110-1307, USA.
  24  */
  25
  26 #ifndef OCFS2_DIR_H
  27 #define OCFS2_DIR_H
  28
  29 struct ocfs2_dir_lookup_result {
  30         struct buffer_head              *dl_leaf_bh;
  31         struct ocfs2_dir_entry          *dl_entry;
  32 };
  33 void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res);
  34
  35 int ocfs2_find_entry(const char *name, int namelen,
  36                      struct inode *dir,
  37                      struct ocfs2_dir_lookup_result *lookup);
  38 int ocfs2_delete_entry(handle_t *handle,
  39                        struct inode *dir,
  40                        struct ocfs2_dir_lookup_result *res);
  41 int __ocfs2_add_entry(handle_t *handle,
  42                       struct inode *dir,
  43                       const char *name, int namelen,
  44                       struct inode *inode, u64 blkno,
  45                       struct buffer_head *parent_fe_bh,
  46                       struct ocfs2_dir_lookup_result *lookup);
  47 static inline int ocfs2_add_entry(handle_t *handle,
  48                                   struct dentry *dentry,
  49                                   struct inode *inode, u64 blkno,
  50                                   struct buffer_head *parent_fe_bh,
  51                                   struct ocfs2_dir_lookup_result *lookup)
  52 {
  53         return __ocfs2_add_entry(handle, dentry->d_parent->d_inode,
  54                                  dentry->d_name.name, dentry->d_name.len,
  55                                  inode, blkno, parent_fe_bh, lookup);
  56 }
  57 int ocfs2_update_entry(struct inode *dir, handle_t *handle,
  58                        struct ocfs2_dir_lookup_result *res,
  59                        struct inode *new_entry_inode);
  60
  61 int ocfs2_check_dir_for_entry(struct inode *dir,
  62                               const char *name,
  63                               int namelen);
  64 int ocfs2_empty_dir(struct inode *inode);
  65
  66 int ocfs2_find_files_on_disk(const char *name,
  67                              int namelen,
  68                              u64 *blkno,
  69                              struct inode *inode,
  70                              struct ocfs2_dir_lookup_result *res);
  71 int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name,
  72                                int namelen, u64 *blkno);
  73 int ocfs2_readdir(struct file *filp, void *dirent, filldir_t filldir);
  74 int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv,
  75                       filldir_t filldir);
  76 int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
  77                                  struct inode *dir,
  78                                  struct buffer_head *parent_fe_bh,
  79                                  const char *name,
  80                                  int namelen,
  81                                  struct ocfs2_dir_lookup_result *lookup);
  82 struct ocfs2_alloc_context;
  83 int ocfs2_fill_new_dir(struct ocfs2_super *osb,
  84                        handle_t *handle,
  85                        struct inode *parent,
  86                        struct inode *inode,
  87                        struct buffer_head *fe_bh,
  88                        struct ocfs2_alloc_context *data_ac);
  89
  90 struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize,
  91                                                             void *data);
  92 #endif /* OCFS2_DIR_H */