block_writer.h

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/* SPDX-License-Identifier: LGPL-3.0-or-later */
/*
 * block_writer.h - This file is part of libsquashfs
 *
 * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#ifndef SQFS_BLOCK_WRITER_H
#define SQFS_BLOCK_WRITER_H
 
#include "sqfs/predef.h"


struct sqfs_block_writer_t {
    sqfs_object_t base;

    int (*write_data_block)(sqfs_block_writer_t *wr, void *user,
                sqfs_u32 size, sqfs_u32 checksum,
                sqfs_u32 flags, const sqfs_u8 *data,
                sqfs_u64 *location);

    sqfs_u64 (*get_block_count)(const sqfs_block_writer_t *wr);
};

typedef enum {
    SQFS_BLOCK_WRITER_HASH_COMPARE_ONLY = 0x01,

    SQFS_BLOCK_WRITER_ALL_FLAGS = 0x01
} SQFS_BLOCK_WRITER_FLAGS;
 
#ifdef __cplusplus
extern "C" {
#endif

SQFS_API sqfs_block_writer_t *sqfs_block_writer_create(sqfs_file_t *file,
                               size_t devblksz,
                               sqfs_u32 flags);
 
#ifdef __cplusplus
}
#endif
 
#endif /* SQFS_BLOCK_WRITER_H */