/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef DECOMPRESSOR_H
#define DECOMPRESSOR_H
/*
 * Squashfs - a compressed read only filesystem for Linux
 *
 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
 * Phillip Lougher <phillip@squashfs.org.uk>
 *
 * decompressor.h
 */

#include <linux/bio.h>

struct squashfs_decompressor {
        void    *(*init)(struct squashfs_sb_info *, void *);
        void    *(*comp_opts)(struct squashfs_sb_info *, void *, int);
        void    (*free)(void *);
        int     (*decompress)(struct squashfs_sb_info *, void *,
                struct bio *, int, int, struct squashfs_page_actor *);
        int     id;
        char    *name;
        int     alloc_buffer;
        int     supported;
};

static inline void *squashfs_comp_opts(struct squashfs_sb_info *msblk,
                                                        void *buff, int length)
{
        return msblk->decompressor->comp_opts ?
                msblk->decompressor->comp_opts(msblk, buff, length) : NULL;
}

#ifdef CONFIG_SQUASHFS_XZ
extern const struct squashfs_decompressor squashfs_xz_comp_ops;
#endif

#ifdef CONFIG_SQUASHFS_LZ4
extern const struct squashfs_decompressor squashfs_lz4_comp_ops;
#endif

#ifdef CONFIG_SQUASHFS_LZO
extern const struct squashfs_decompressor squashfs_lzo_comp_ops;
#endif

#ifdef CONFIG_SQUASHFS_ZLIB
extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
#endif

#ifdef CONFIG_SQUASHFS_ZSTD
extern const struct squashfs_decompressor squashfs_zstd_comp_ops;
#endif

#endif