1328970deSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 2ccd979bdSMark Fasheh /* -*- mode: c; c-basic-offset: 8; -*- 3ccd979bdSMark Fasheh * vim: noexpandtab sw=8 ts=8 sts=0: 4ccd979bdSMark Fasheh * 5ccd979bdSMark Fasheh * dir.h 6ccd979bdSMark Fasheh * 7ccd979bdSMark Fasheh * Function prototypes 8ccd979bdSMark Fasheh * 9ccd979bdSMark Fasheh * Copyright (C) 2002, 2004 Oracle. All rights reserved. 10ccd979bdSMark Fasheh */ 11ccd979bdSMark Fasheh 12ccd979bdSMark Fasheh #ifndef OCFS2_DIR_H 13ccd979bdSMark Fasheh #define OCFS2_DIR_H 14ccd979bdSMark Fasheh 159b7895efSMark Fasheh struct ocfs2_dx_hinfo { 169b7895efSMark Fasheh u32 major_hash; 179b7895efSMark Fasheh u32 minor_hash; 189b7895efSMark Fasheh }; 199b7895efSMark Fasheh 204a12ca3aSMark Fasheh struct ocfs2_dir_lookup_result { 219b7895efSMark Fasheh struct buffer_head *dl_leaf_bh; /* Unindexed leaf 229b7895efSMark Fasheh * block */ 239b7895efSMark Fasheh struct ocfs2_dir_entry *dl_entry; /* Target dirent in 249b7895efSMark Fasheh * unindexed leaf */ 259b7895efSMark Fasheh 264ed8a6bbSMark Fasheh struct buffer_head *dl_dx_root_bh; /* Root of indexed 274ed8a6bbSMark Fasheh * tree */ 28e7c17e43SMark Fasheh 299b7895efSMark Fasheh struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */ 309b7895efSMark Fasheh struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in 319b7895efSMark Fasheh * indexed leaf */ 329b7895efSMark Fasheh struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */ 33e7c17e43SMark Fasheh 34e7c17e43SMark Fasheh struct buffer_head *dl_prev_leaf_bh;/* Previous entry in 35e7c17e43SMark Fasheh * dir free space 36e7c17e43SMark Fasheh * list. NULL if 37e7c17e43SMark Fasheh * previous entry is 38e7c17e43SMark Fasheh * dx root block. */ 394a12ca3aSMark Fasheh }; 40e7c17e43SMark Fasheh 414a12ca3aSMark Fasheh void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res); 424a12ca3aSMark Fasheh 434a12ca3aSMark Fasheh int ocfs2_find_entry(const char *name, int namelen, 44316f4b9fSMark Fasheh struct inode *dir, 454a12ca3aSMark Fasheh struct ocfs2_dir_lookup_result *lookup); 46316f4b9fSMark Fasheh int ocfs2_delete_entry(handle_t *handle, 47316f4b9fSMark Fasheh struct inode *dir, 484a12ca3aSMark Fasheh struct ocfs2_dir_lookup_result *res); 49316f4b9fSMark Fasheh int __ocfs2_add_entry(handle_t *handle, 50316f4b9fSMark Fasheh struct inode *dir, 51316f4b9fSMark Fasheh const char *name, int namelen, 52316f4b9fSMark Fasheh struct inode *inode, u64 blkno, 53316f4b9fSMark Fasheh struct buffer_head *parent_fe_bh, 544a12ca3aSMark Fasheh struct ocfs2_dir_lookup_result *lookup); 55316f4b9fSMark Fasheh static inline int ocfs2_add_entry(handle_t *handle, 56316f4b9fSMark Fasheh struct dentry *dentry, 57316f4b9fSMark Fasheh struct inode *inode, u64 blkno, 58316f4b9fSMark Fasheh struct buffer_head *parent_fe_bh, 594a12ca3aSMark Fasheh struct ocfs2_dir_lookup_result *lookup) 60316f4b9fSMark Fasheh { 612b0143b5SDavid Howells return __ocfs2_add_entry(handle, d_inode(dentry->d_parent), 62316f4b9fSMark Fasheh dentry->d_name.name, dentry->d_name.len, 634a12ca3aSMark Fasheh inode, blkno, parent_fe_bh, lookup); 64316f4b9fSMark Fasheh } 6538760e24SMark Fasheh int ocfs2_update_entry(struct inode *dir, handle_t *handle, 664a12ca3aSMark Fasheh struct ocfs2_dir_lookup_result *res, 6738760e24SMark Fasheh struct inode *new_entry_inode); 68316f4b9fSMark Fasheh 69ccd979bdSMark Fasheh int ocfs2_check_dir_for_entry(struct inode *dir, 70ccd979bdSMark Fasheh const char *name, 71ccd979bdSMark Fasheh int namelen); 720bfbbf62SMark Fasheh int ocfs2_empty_dir(struct inode *inode); 734a12ca3aSMark Fasheh 74ccd979bdSMark Fasheh int ocfs2_find_files_on_disk(const char *name, 75ccd979bdSMark Fasheh int namelen, 76ccd979bdSMark Fasheh u64 *blkno, 77ccd979bdSMark Fasheh struct inode *inode, 784a12ca3aSMark Fasheh struct ocfs2_dir_lookup_result *res); 79be94d117SMark Fasheh int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name, 80be94d117SMark Fasheh int namelen, u64 *blkno); 813704412bSAl Viro int ocfs2_readdir(struct file *file, struct dir_context *ctx); 823704412bSAl Viro int ocfs2_dir_foreach(struct inode *inode, struct dir_context *ctx); 83ccd979bdSMark Fasheh int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb, 84ccd979bdSMark Fasheh struct inode *dir, 85ccd979bdSMark Fasheh struct buffer_head *parent_fe_bh, 86ccd979bdSMark Fasheh const char *name, 87ccd979bdSMark Fasheh int namelen, 884a12ca3aSMark Fasheh struct ocfs2_dir_lookup_result *lookup); 89ccd979bdSMark Fasheh struct ocfs2_alloc_context; 90316f4b9fSMark Fasheh int ocfs2_fill_new_dir(struct ocfs2_super *osb, 911fabe148SMark Fasheh handle_t *handle, 92316f4b9fSMark Fasheh struct inode *parent, 93316f4b9fSMark Fasheh struct inode *inode, 94316f4b9fSMark Fasheh struct buffer_head *fe_bh, 959b7895efSMark Fasheh struct ocfs2_alloc_context *data_ac, 969b7895efSMark Fasheh struct ocfs2_alloc_context *meta_ac); 979b7895efSMark Fasheh 989b7895efSMark Fasheh int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh); 99316f4b9fSMark Fasheh 100c175a518SJoel Becker struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize, 101c175a518SJoel Becker void *data); 102ccd979bdSMark Fasheh #endif /* OCFS2_DIR_H */ 103