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fs/ocfs2/dir.h
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/* -*- mode: c; c-basic-offset: 8; -*- * vim: noexpandtab sw=8 ts=8 sts=0: * * dir.h * * Function prototypes * * Copyright (C) 2002, 2004 Oracle. 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; either * version 2 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will 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 to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #ifndef OCFS2_DIR_H #define OCFS2_DIR_H |
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struct ocfs2_dx_hinfo { u32 major_hash; u32 minor_hash; }; |
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struct ocfs2_dir_lookup_result { |
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struct buffer_head *dl_leaf_bh; /* Unindexed leaf * block */ struct ocfs2_dir_entry *dl_entry; /* Target dirent in * unindexed leaf */ |
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struct buffer_head *dl_dx_root_bh; /* Root of indexed * tree */ |
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struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */ struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in * indexed leaf */ struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */ |
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struct buffer_head *dl_prev_leaf_bh;/* Previous entry in * dir free space * list. NULL if * previous entry is * dx root block. */ |
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}; |
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void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res); int ocfs2_find_entry(const char *name, int namelen, struct inode *dir, struct ocfs2_dir_lookup_result *lookup); |
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int ocfs2_delete_entry(handle_t *handle, struct inode *dir, |
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struct ocfs2_dir_lookup_result *res); |
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int __ocfs2_add_entry(handle_t *handle, struct inode *dir, const char *name, int namelen, struct inode *inode, u64 blkno, struct buffer_head *parent_fe_bh, |
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struct ocfs2_dir_lookup_result *lookup); |
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static inline int ocfs2_add_entry(handle_t *handle, struct dentry *dentry, struct inode *inode, u64 blkno, struct buffer_head *parent_fe_bh, |
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struct ocfs2_dir_lookup_result *lookup) |
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{ |
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return __ocfs2_add_entry(handle, d_inode(dentry->d_parent), |
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dentry->d_name.name, dentry->d_name.len, |
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inode, blkno, parent_fe_bh, lookup); |
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} |
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int ocfs2_update_entry(struct inode *dir, handle_t *handle, |
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struct ocfs2_dir_lookup_result *res, |
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struct inode *new_entry_inode); |
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int ocfs2_check_dir_for_entry(struct inode *dir, const char *name, int namelen); |
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int ocfs2_empty_dir(struct inode *inode); |
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int ocfs2_find_files_on_disk(const char *name, int namelen, u64 *blkno, struct inode *inode, |
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struct ocfs2_dir_lookup_result *res); |
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int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name, int namelen, u64 *blkno); |
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int ocfs2_readdir(struct file *file, struct dir_context *ctx); int ocfs2_dir_foreach(struct inode *inode, struct dir_context *ctx); |
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int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb, struct inode *dir, struct buffer_head *parent_fe_bh, const char *name, int namelen, |
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struct ocfs2_dir_lookup_result *lookup); |
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struct ocfs2_alloc_context; |
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int ocfs2_fill_new_dir(struct ocfs2_super *osb, handle_t *handle, struct inode *parent, struct inode *inode, struct buffer_head *fe_bh, |
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struct ocfs2_alloc_context *data_ac, struct ocfs2_alloc_context *meta_ac); int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh); |
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struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize, void *data); |
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#endif /* OCFS2_DIR_H */ |