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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 Bootlin
*
* Author: Joao Marcos Costa <joaomarcos.costa@bootlin.com>
*/
#ifndef SQFS_DECOMPRESSOR_H
#define SQFS_DECOMPRESSOR_H
#include <stdint.h>
#include "sqfs_filesystem.h"
#define SQFS_COMP_ZLIB 1
#define SQFS_COMP_LZMA 2
#define SQFS_COMP_LZO 3
#define SQFS_COMP_XZ 4
#define SQFS_COMP_LZ4 5
#define SQFS_COMP_ZSTD 6
/* LZMA does not support any compression options */
struct squashfs_gzip_opts {
u32 compression_level;
u16 window_size;
u16 strategies;
};
struct squashfs_xz_opts {
u32 dictionary_size;
u32 executable_filters;
};
struct squashfs_lz4_opts {
u32 version;
u32 flags;
};
struct squashfs_zstd_opts {
u32 compression_level;
};
struct squashfs_lzo_opts {
u32 algorithm;
u32 level;
};
union squashfs_compression_opts {
struct squashfs_gzip_opts *gzip;
struct squashfs_xz_opts *xz;
struct squashfs_lz4_opts *lz4;
struct squashfs_zstd_opts *zstd;
struct squashfs_lzo_opts *lzo;
};
int sqfs_decompress(u16 comp_type, void *dest, unsigned long *dest_len,
void *source, u32 lenp);
int sqfs_decompressor_init(struct squashfs_ctxt *ctxt);
void sqfs_decompressor_cleanup(struct squashfs_ctxt *ctxt);
#endif /* SQFS_DECOMPRESSOR_H */
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