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1/* SPDX-License-Identifier: GPL-2.0-or-later */2#ifndef DECOMPRESSOR_H3#define DECOMPRESSOR_H4/*5 * Squashfs - a compressed read only filesystem for Linux6 *7 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 20098 * Phillip Lougher <phillip@squashfs.org.uk>9 *10 * decompressor.h11 */12 13#include <linux/bio.h>14 15struct squashfs_decompressor {16 void *(*init)(struct squashfs_sb_info *, void *);17 void *(*comp_opts)(struct squashfs_sb_info *, void *, int);18 void (*free)(void *);19 int (*decompress)(struct squashfs_sb_info *, void *,20 struct bio *, int, int, struct squashfs_page_actor *);21 int id;22 char *name;23 int alloc_buffer;24 int supported;25};26 27static inline void *squashfs_comp_opts(struct squashfs_sb_info *msblk,28 void *buff, int length)29{30 return msblk->decompressor->comp_opts ?31 msblk->decompressor->comp_opts(msblk, buff, length) : NULL;32}33 34#ifdef CONFIG_SQUASHFS_XZ35extern const struct squashfs_decompressor squashfs_xz_comp_ops;36#endif37 38#ifdef CONFIG_SQUASHFS_LZ439extern const struct squashfs_decompressor squashfs_lz4_comp_ops;40#endif41 42#ifdef CONFIG_SQUASHFS_LZO43extern const struct squashfs_decompressor squashfs_lzo_comp_ops;44#endif45 46#ifdef CONFIG_SQUASHFS_ZLIB47extern const struct squashfs_decompressor squashfs_zlib_comp_ops;48#endif49 50#ifdef CONFIG_SQUASHFS_ZSTD51extern const struct squashfs_decompressor squashfs_zstd_comp_ops;52#endif53 54#endif55