1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * Squashfs - a compressed read only filesystem for Linux
7 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
8 * Phillip Lougher <phillip@squashfs.org.uk>
13 #include <linux/bio.h>
15 struct squashfs_decompressor {
16 void *(*init)(struct squashfs_sb_info *, void *);
17 void *(*comp_opts)(struct squashfs_sb_info *, void *, int);
19 int (*decompress)(struct squashfs_sb_info *, void *,
20 struct bio *, int, int, struct squashfs_page_actor *);
26 static inline void *squashfs_comp_opts(struct squashfs_sb_info *msblk,
27 void *buff, int length)
29 return msblk->decompressor->comp_opts ?
30 msblk->decompressor->comp_opts(msblk, buff, length) : NULL;
33 #ifdef CONFIG_SQUASHFS_XZ
34 extern const struct squashfs_decompressor squashfs_xz_comp_ops;
37 #ifdef CONFIG_SQUASHFS_LZ4
38 extern const struct squashfs_decompressor squashfs_lz4_comp_ops;
41 #ifdef CONFIG_SQUASHFS_LZO
42 extern const struct squashfs_decompressor squashfs_lzo_comp_ops;
45 #ifdef CONFIG_SQUASHFS_ZLIB
46 extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
49 #ifdef CONFIG_SQUASHFS_ZSTD
50 extern const struct squashfs_decompressor squashfs_zstd_comp_ops;