ref: 8321f180e635400137d052270e3c463a81738c1f
dir: /include/ext4_inode.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_inode.h
* @brief Inode handle functions
*/
#ifndef EXT4_INODE_H_
#define EXT4_INODE_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "ext4_config.h"
#include "ext4_types.h"
#include <stdint.h>
/**@brief Get mode of the i-node.
* @param sb Superblock
* @param inode I-node to load mode from
* @return Mode of the i-node
*/
uint32_t ext4_inode_get_mode(struct ext4_sblock *sb, struct ext4_inode *inode);
/**@brief Set mode of the i-node.
* @param sb Superblock
* @param inode I-node to set mode to
* @param mode Mode to set to i-node
*/
void ext4_inode_set_mode(struct ext4_sblock *sb, struct ext4_inode *inode,
uint32_t mode);
/**@brief Get ID of the i-node owner (user id).
* @param inode I-node to load uid from
* @return User ID of the i-node owner
*/
uint32_t ext4_inode_get_uid(struct ext4_inode *inode);
/**@brief Set ID of the i-node owner.
* @param inode I-node to set uid to
* @param uid ID of the i-node owner
*/
void ext4_inode_set_uid(struct ext4_inode *inode, uint32_t uid);
/**@brief Get real i-node size.
* @param sb Superblock
* @param inode I-node to load size from
* @return Real size of i-node
*/
uint64_t ext4_inode_get_size(struct ext4_sblock *sb, struct ext4_inode *inode);
/**@brief Set real i-node size.
* @param inode I-node to set size to
* @param size Size of the i-node
*/
void ext4_inode_set_size(struct ext4_inode *inode, uint64_t size);
/**@brief Get time, when i-node was last accessed.
* @param inode I-node
* @return Time of the last access (POSIX)
*/
uint32_t ext4_inode_get_access_time(struct ext4_inode *inode);
/**@brief Set time, when i-node was last accessed.
* @param inode I-node
* @param time Time of the last access (POSIX)
*/
void ext4_inode_set_access_time(struct ext4_inode *inode, uint32_t time);
/**@brief Get time, when i-node was last changed.
* @param inode I-node
* @return Time of the last change (POSIX)
*/
uint32_t ext4_inode_get_change_inode_time(struct ext4_inode *inode);
/**@brief Set time, when i-node was last changed.
* @param inode I-node
* @param time Time of the last change (POSIX)
*/
void ext4_inode_set_change_inode_time(struct ext4_inode *inode, uint32_t time);
/**@brief Get time, when i-node content was last modified.
* @param inode I-node
* @return Time of the last content modification (POSIX)
*/
uint32_t ext4_inode_get_modif_time(struct ext4_inode *inode);
/**@brief Set time, when i-node content was last modified.
* @param inode I-node
* @param time Time of the last content modification (POSIX)
*/
void ext4_inode_set_modif_time(struct ext4_inode *inode, uint32_t time);
/**@brief Get time, when i-node was deleted.
* @param inode I-node
* @return Time of the delete action (POSIX)
*/
uint32_t ext4_inode_get_del_time(struct ext4_inode *inode);
/**@brief Set time, when i-node was deleted.
* @param inode I-node
* @param time Time of the delete action (POSIX)
*/
void ext4_inode_set_del_time(struct ext4_inode *inode, uint32_t time);
/**@brief Get ID of the i-node owner's group.
* @param inode I-node to load gid from
* @return Group ID of the i-node owner
*/
uint32_t ext4_inode_get_gid(struct ext4_inode *inode);
/**@brief Set ID to the i-node owner's group.
* @param inode I-node to set gid to
* @param gid Group ID of the i-node owner
*/
void ext4_inode_set_gid(struct ext4_inode *inode, uint32_t gid);
/**@brief Get number of links to i-node.
* @param inode I-node to load number of links from
* @return Number of links to i-node
*/
uint16_t ext4_inode_get_links_cnt(struct ext4_inode *inode);
/**@brief Set number of links to i-node.
* @param inode I-node to set number of links to
* @param count Number of links to i-node
*/
void ext4_inode_set_links_cnt(struct ext4_inode *inode, uint16_t cnt);
/**@brief Get number of 512-bytes blocks used for i-node.
* @param sb Superblock
* @param inode I-node
* @return Number of 512-bytes blocks
*/
uint64_t ext4_inode_get_blocks_count(struct ext4_sblock *sb,
struct ext4_inode *inode);
/**@brief Set number of 512-bytes blocks used for i-node.
* @param sb Superblock
* @param inode I-node
* @param count Number of 512-bytes blocks
* @return Error code
*/
int ext4_inode_set_blocks_count(struct ext4_sblock *sb,
struct ext4_inode *inode, uint64_t cnt);
/**@brief Get flags (features) of i-node.
* @param inode I-node to get flags from
* @return Flags (bitmap)
*/
uint32_t ext4_inode_get_flags(struct ext4_inode *inode);
/**@brief Set flags (features) of i-node.
* @param inode I-node to set flags to
* @param flags Flags to set to i-node
*/
void ext4_inode_set_flags(struct ext4_inode *inode, uint32_t flags);
/**@brief Get file generation (used by NFS).
* @param inode I-node
* @return File generation
*/
uint32_t ext4_inode_get_generation(struct ext4_inode *inode);
/**@brief Set file generation (used by NFS).
* @param inode I-node
* @param generation File generation
*/
void ext4_inode_set_generation(struct ext4_inode *inode, uint32_t gen);
/**@brief Get extra I-node size field.
* @param sb Superblock
* @param inode I-node
* @return extra I-node size
*/
uint16_t ext4_inode_get_extra_isize(struct ext4_sblock *sb,
struct ext4_inode *inode);
/**@brief Set extra I-node size field.
* @param sb Superblock
* @param inode I-node
* @param size extra I-node size
*/
void ext4_inode_set_extra_isize(struct ext4_sblock *sb,
struct ext4_inode *inode,
uint16_t size);
/**@brief Get address of block, where are extended attributes located.
* @param inode I-node
* @param sb Superblock
* @return Block address
*/
uint64_t ext4_inode_get_file_acl(struct ext4_inode *inode,
struct ext4_sblock *sb);
/**@brief Set address of block, where are extended attributes located.
* @param inode I-node
* @param sb Superblock
* @param file_acl Block address
*/
void ext4_inode_set_file_acl(struct ext4_inode *inode, struct ext4_sblock *sb,
uint64_t acl);
/**@brief Get block address of specified direct block.
* @param inode I-node to load block from
* @param idx Index of logical block
* @return Physical block address
*/
uint32_t ext4_inode_get_direct_block(struct ext4_inode *inode, uint32_t idx);
/**@brief Set block address of specified direct block.
* @param inode I-node to set block address to
* @param idx Index of logical block
* @param fblock Physical block address
*/
void ext4_inode_set_direct_block(struct ext4_inode *inode, uint32_t idx,
uint32_t block);
/**@brief Get block address of specified indirect block.
* @param inode I-node to get block address from
* @param idx Index of indirect block
* @return Physical block address
*/
uint32_t ext4_inode_get_indirect_block(struct ext4_inode *inode, uint32_t idx);
/**@brief Set block address of specified indirect block.
* @param inode I-node to set block address to
* @param idx Index of indirect block
* @param fblock Physical block address
*/
void ext4_inode_set_indirect_block(struct ext4_inode *inode, uint32_t idx,
uint32_t block);
/**@brief Get device number
* @param inode I-node to get device number from
* @return Device number
*/
uint32_t ext4_inode_get_dev(struct ext4_inode *inode);
/**@brief Set device number
* @param inode I-node to set device number to
* @param dev Device number
*/
void ext4_inode_set_dev(struct ext4_inode *inode, uint32_t dev);
/**@brief return the type of i-node
* @param sb Superblock
* @param inode I-node to return the type of
* @return Result of check operation
*/
uint32_t ext4_inode_type(struct ext4_sblock *sb, struct ext4_inode *inode);
/**@brief Check if i-node has specified type.
* @param sb Superblock
* @param inode I-node to check type of
* @param type Type to check
* @return Result of check operation
*/
bool ext4_inode_is_type(struct ext4_sblock *sb, struct ext4_inode *inode,
uint32_t type);
/**@brief Check if i-node has specified flag.
* @param inode I-node to check flags of
* @param flag Flag to check
* @return Result of check operation
*/
bool ext4_inode_has_flag(struct ext4_inode *inode, uint32_t f);
/**@brief Remove specified flag from i-node.
* @param inode I-node to clear flag on
* @param clear_flag Flag to be cleared
*/
void ext4_inode_clear_flag(struct ext4_inode *inode, uint32_t f);
/**@brief Set specified flag to i-node.
* @param inode I-node to set flag on
* @param set_flag Flag to be set
*/
void ext4_inode_set_flag(struct ext4_inode *inode, uint32_t f);
/**@brief Get inode checksum(crc32)
* @param sb Superblock
* @param inode I-node to get checksum value from
*/
uint32_t
ext4_inode_get_csum(struct ext4_sblock *sb, struct ext4_inode *inode);
/**@brief Get inode checksum(crc32)
* @param sb Superblock
* @param inode I-node to get checksum value from
*/
void
ext4_inode_set_csum(struct ext4_sblock *sb, struct ext4_inode *inode,
uint32_t checksum);
/**@brief Check if i-node can be truncated.
* @param sb Superblock
* @param inode I-node to check
* @return Result of the check operation
*/
bool ext4_inode_can_truncate(struct ext4_sblock *sb, struct ext4_inode *inode);
/**@brief Get extent header from the root of the extent tree.
* @param inode I-node to get extent header from
* @return Pointer to extent header of the root node
*/
struct ext4_extent_header *
ext4_inode_get_extent_header(struct ext4_inode *inode);
#ifdef __cplusplus
}
#endif
#endif /* EXT4_INODE_H_ */
/**
* @}
*/