ref: 733c5d6645b133b60d304c38fcb1398f94d0618c
dir: /sys/src/cmd/ext4srv/include/ext4_dir_idx.h/
#pragma once #include "ext4_config.h" #include "ext4_types.h" #include "ext4_fs.h" #include "ext4_dir.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, usize 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, u32int 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, u32int parent_inode);