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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* inode.h
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#ifndef SQFS_INODE_H
#define SQFS_INODE_H
#include "config.h"
#include "sqfs/predef.h"
#include "sqfs/meta_reader.h"
#include "sqfs/meta_writer.h"
#include <stdint.h>
typedef enum {
SQFS_INODE_DIR = 1,
SQFS_INODE_FILE = 2,
SQFS_INODE_SLINK = 3,
SQFS_INODE_BDEV = 4,
SQFS_INODE_CDEV = 5,
SQFS_INODE_FIFO = 6,
SQFS_INODE_SOCKET = 7,
SQFS_INODE_EXT_DIR = 8,
SQFS_INODE_EXT_FILE = 9,
SQFS_INODE_EXT_SLINK = 10,
SQFS_INODE_EXT_BDEV = 11,
SQFS_INODE_EXT_CDEV = 12,
SQFS_INODE_EXT_FIFO = 13,
SQFS_INODE_EXT_SOCKET = 14,
} E_SQFS_INODE_TYPE;
typedef struct {
uint16_t type;
uint16_t mode;
uint16_t uid_idx;
uint16_t gid_idx;
uint32_t mod_time;
uint32_t inode_number;
} sqfs_inode_t;
typedef struct {
uint32_t nlink;
uint32_t devno;
} sqfs_inode_dev_t;
typedef struct {
uint32_t nlink;
uint32_t devno;
uint32_t xattr_idx;
} sqfs_inode_dev_ext_t;
typedef struct {
uint32_t nlink;
} sqfs_inode_ipc_t;
typedef struct {
uint32_t nlink;
uint32_t xattr_idx;
} sqfs_inode_ipc_ext_t;
typedef struct {
uint32_t nlink;
uint32_t target_size;
/*uint8_t target[];*/
} sqfs_inode_slink_t;
typedef struct {
uint32_t nlink;
uint32_t target_size;
/*uint8_t target[];*/
uint32_t xattr_idx;
} sqfs_inode_slink_ext_t;
typedef struct {
uint32_t blocks_start;
uint32_t fragment_index;
uint32_t fragment_offset;
uint32_t file_size;
/*uint32_t block_sizes[];*/
} sqfs_inode_file_t;
typedef struct {
uint64_t blocks_start;
uint64_t file_size;
uint64_t sparse;
uint32_t nlink;
uint32_t fragment_idx;
uint32_t fragment_offset;
uint32_t xattr_idx;
/*uint32_t block_sizes[];*/
} sqfs_inode_file_ext_t;
typedef struct {
uint32_t start_block;
uint32_t nlink;
uint16_t size;
uint16_t offset;
uint32_t parent_inode;
} sqfs_inode_dir_t;
typedef struct {
uint32_t nlink;
uint32_t size;
uint32_t start_block;
uint32_t parent_inode;
uint16_t inodex_count;
uint16_t offset;
uint32_t xattr_idx;
} sqfs_inode_dir_ext_t;
typedef struct {
sqfs_inode_t base;
char *slink_target;
uint32_t *block_sizes;
size_t num_file_blocks;
union {
sqfs_inode_dev_t dev;
sqfs_inode_dev_ext_t dev_ext;
sqfs_inode_ipc_t ipc;
sqfs_inode_ipc_ext_t ipc_ext;
sqfs_inode_slink_t slink;
sqfs_inode_slink_ext_t slink_ext;
sqfs_inode_file_t file;
sqfs_inode_file_ext_t file_ext;
sqfs_inode_dir_t dir;
sqfs_inode_dir_ext_t dir_ext;
} data;
uint8_t extra[];
} sqfs_inode_generic_t;
#ifdef __cplusplus
extern "C" {
#endif
/* Inode can be freed with a single free() call.
The function internally prints error message to stderr on failure. */
SQFS_API
sqfs_inode_generic_t *sqfs_meta_reader_read_inode(sqfs_meta_reader_t *ir,
sqfs_super_t *super,
uint64_t block_start,
size_t offset);
SQFS_API int sqfs_meta_writer_write_inode(sqfs_meta_writer_t *iw,
sqfs_inode_generic_t *n);
#ifdef __cplusplus
}
#endif
#endif /* SQFS_INODE_H */
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