X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=lwext4%2Fext4_dir_idx.h;h=ab5bafd1374f55702c220267fe677e46cc9b89be;hb=29a5d255e429f73fbe44ac7c878fff3003474c88;hp=9682d37155a92e93d991fecaa5bb15437ae19c64;hpb=d868262d36283441a727e1022414ac706abddb59;p=lwext4.git diff --git a/lwext4/ext4_dir_idx.h b/lwext4/ext4_dir_idx.h index 9682d37..ab5bafd 100644 --- a/lwext4/ext4_dir_idx.h +++ b/lwext4/ext4_dir_idx.h @@ -1,103 +1,90 @@ -/* - * 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_ - -#include -#include - -#include -#include - -uint8_t ext4_dir_dx_root_info_get_hash_version( - struct ext4_directory_dx_root_info *root_info); -void ext4_dir_dx_root_info_set_hash_version( - struct ext4_directory_dx_root_info *root_info, uint8_t v); - -uint8_t ext4_dir_dx_root_info_get_info_length( - struct ext4_directory_dx_root_info *root_info); -void ext4_dir_dx_root_info_set_info_length( - struct ext4_directory_dx_root_info *root_info, uint8_t len); - -uint8_t ext4_dir_dx_root_info_get_indirect_levels( - struct ext4_directory_dx_root_info *root_info); -void ext4_dir_dx_root_info_set_indirect_levels( - struct ext4_directory_dx_root_info *root_info, uint8_t lvl); - - - -uint16_t ext4_dir_dx_countlimit_get_limit( - struct ext4_directory_dx_countlimit *climit); -void ext4_dir_dx_countlimit_set_limit( - struct ext4_directory_dx_countlimit *climit, uint16_t limit); - -uint16_t ext4_dir_dx_countlimit_get_count( - struct ext4_directory_dx_countlimit *climit); -void ext4_dir_dx_countlimit_set_count( - struct ext4_directory_dx_countlimit *climit, uint16_t count); - - -uint32_t ext4_dir_dx_entry_get_hash( - struct ext4_directory_dx_entry *entry); -void ext4_dir_dx_entry_set_hash( - struct ext4_directory_dx_entry *entry, uint32_t hash); - -uint32_t ext4_dir_dx_entry_get_block( - struct ext4_directory_dx_entry *entry); -void ext4_dir_dx_entry_set_block( - struct ext4_directory_dx_entry *entry, uint32_t block); - - -int ext4_dir_dx_init(struct ext4_inode_ref *dir); - -int ext4_dir_dx_find_entry(struct ext4_directory_search_result * result, - struct ext4_inode_ref *inode_ref, size_t name_len, const char *name); - -int ext4_dir_dx_add_entry(struct ext4_inode_ref *parent, - struct ext4_inode_ref *child, const char *name); - -#endif /* EXT4_DIR_IDX_H_ */ - -/** - * @} - */ - +/* + * 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_ + +#include "ext4_config.h" +#include "ext4_types.h" + +#include +#include + +/**@brief Initialize index structure of new directory. + * @param dir Pointer to directory i-node + * @return Error code + */ +int ext4_dir_dx_init(struct ext4_inode_ref *dir); + +/**@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_directory_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); + +/**@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); + +#endif /* EXT4_DIR_IDX_H_ */ + +/** + * @} + */