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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* dir.h
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#ifndef SQFS_DIR_H
#define SQFS_DIR_H
#include "config.h"
#include "sqfs/meta_reader.h"
#include "sqfs/meta_writer.h"
#include <stdint.h>
#define SQFS_MAX_DIR_ENT 256
typedef struct {
uint32_t count;
uint32_t start_block;
uint32_t inode_number;
} sqfs_dir_header_t;
typedef struct {
uint16_t offset;
int16_t inode_diff;
uint16_t type;
uint16_t size;
uint8_t name[];
} sqfs_dir_entry_t;
typedef struct {
uint32_t index;
uint32_t start_block;
uint32_t size;
uint8_t name[];
} sqfs_dir_index_t;
typedef struct sqfs_dir_writer_t sqfs_dir_writer_t;
#ifdef __cplusplus
extern "C" {
#endif
/* Returns 0 on success. Internally prints to stderr on failure */
int meta_reader_read_dir_header(meta_reader_t *m, sqfs_dir_header_t *hdr);
/* Entry can be freed with a single free() call.
The function internally prints to stderr on failure */
sqfs_dir_entry_t *meta_reader_read_dir_ent(meta_reader_t *m);
sqfs_dir_writer_t *sqfs_dir_writer_create(meta_writer_t *dm);
void sqfs_dir_writer_destroy(sqfs_dir_writer_t *writer);
int sqfs_dir_writer_begin(sqfs_dir_writer_t *writer);
int sqfs_dir_writer_add_entry(sqfs_dir_writer_t *writer, const char *name,
uint32_t inode_num, uint64_t inode_ref,
mode_t mode);
int sqfs_dir_writer_end(sqfs_dir_writer_t *writer);
size_t sqfs_dir_writer_get_size(sqfs_dir_writer_t *writer);
uint64_t sqfs_dir_writer_get_dir_reference(sqfs_dir_writer_t *writer);
size_t sqfs_dir_writer_get_index_size(sqfs_dir_writer_t *writer);
int sqfs_dir_writer_write_index(sqfs_dir_writer_t *writer,
meta_writer_t *im);
#ifdef __cplusplus
}
#endif
#endif /* SQFS_DIR_H */
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