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/* SPDX-License-Identifier: LGPL-3.0-or-later */
/*
* super.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#define SQFS_BUILDING_DLL
#include "config.h"
#include "sqfs/super.h"
#include "sqfs/error.h"
#include <string.h>
int sqfs_super_init(sqfs_super_t *super, size_t block_size, sqfs_u32 mtime,
SQFS_COMPRESSOR compressor)
{
unsigned int i;
if (block_size & (block_size - 1))
return SQFS_ERROR_SUPER_BLOCK_SIZE;
if (block_size < SQFS_MIN_BLOCK_SIZE)
return SQFS_ERROR_SUPER_BLOCK_SIZE;
if (block_size > SQFS_MAX_BLOCK_SIZE)
return SQFS_ERROR_SUPER_BLOCK_SIZE;
memset(super, 0, sizeof(*super));
super->magic = SQFS_MAGIC;
super->modification_time = mtime;
super->block_size = block_size;
super->compression_id = compressor;
super->flags = SQFS_FLAG_NO_FRAGMENTS | SQFS_FLAG_NO_XATTRS;
super->flags |= SQFS_FLAG_NO_DUPLICATES;
super->version_major = SQFS_VERSION_MAJOR;
super->version_minor = SQFS_VERSION_MINOR;
super->bytes_used = sizeof(*super);
super->id_table_start = 0xFFFFFFFFFFFFFFFFUL;
super->xattr_id_table_start = 0xFFFFFFFFFFFFFFFFUL;
super->inode_table_start = 0xFFFFFFFFFFFFFFFFUL;
super->directory_table_start = 0xFFFFFFFFFFFFFFFFUL;
super->fragment_table_start = 0xFFFFFFFFFFFFFFFFUL;
super->export_table_start = 0xFFFFFFFFFFFFFFFFUL;
for (i = block_size; i != 0x01; i >>= 1)
super->block_log += 1;
return 0;
}
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