/* * Copyright (c) 2013 Grzegorz Kostka (kostka.grzegorz@gmail.com) * * * HelenOS: * Copyright (c) 2012 Martin Sucha * Copyright (c) 2012 Frantisek Princ * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright *   notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright *   notice, this list of conditions and the following disclaimer in the *   documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products *   derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @addtogroup lwext4 * @{ *//** * @file  ext4_dir_idx.h * @brief Directory indexing procedures. */ #ifndef EXT4_DIR_IDX_H_#define EXT4_DIR_IDX_H_ #ifdef __cplusplusextern "C" {#endif #include <ext4_config.h>#include <ext4_types.h> #include <ext4_fs.h>#include <ext4_dir.h> #include <stdint.h>#include <stdbool.h> struct ext4_dir_idx_block {	struct ext4_block b;	struct ext4_dir_idx_entry *entries;	struct ext4_dir_idx_entry *position;}; #define EXT4_DIR_DX_INIT_BCNT 2  /**@brief Initialize index structure of new directory. * @param dir Pointer to directory i-node * @param dir Pointer to parent directory i-node * @return Error code */int ext4_dir_dx_init(struct ext4_inode_ref *dir,		     struct ext4_inode_ref *parent); /**@brief Try to find directory entry using directory index. * @param result    Output value - if entry will be found, *                  than will be passed through this parameter * @param inode_ref Directory i-node * @param name_len  Length of name to be found * @param name      Name to be found * @return Error code */int ext4_dir_dx_find_entry(struct ext4_dir_search_result *result,			   struct ext4_inode_ref *inode_ref, size_t name_len,			   const char *name); /**@brief Add new entry to indexed directory * @param parent Directory i-node * @param child  I-node to be referenced from directory entry * @param name   Name of new directory entry * @return Error code */int ext4_dir_dx_add_entry(struct ext4_inode_ref *parent,			  struct ext4_inode_ref *child, const char *name, uint32_t name_len); /**@brief Add new entry to indexed directory * @param dir           Directory i-node * @param parent_inode  parent inode index * @return Error code */int ext4_dir_dx_reset_parent_inode(struct ext4_inode_ref *dir,                                   uint32_t parent_inode); #ifdef __cplusplus}#endif #endif /* EXT4_DIR_IDX_H_ */ /** * @} */