1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2020 Bootlin
5 * Author: Joao Marcos Costa <joaomarcos.costa@bootlin.com>
8 #ifndef SQFS_DECOMPRESSOR_H
9 #define SQFS_DECOMPRESSOR_H
12 #include "sqfs_filesystem.h"
14 #define SQFS_COMP_ZLIB 1
15 #define SQFS_COMP_LZMA 2
16 #define SQFS_COMP_LZO 3
17 #define SQFS_COMP_XZ 4
18 #define SQFS_COMP_LZ4 5
19 #define SQFS_COMP_ZSTD 6
21 /* LZMA does not support any compression options */
23 struct squashfs_gzip_opts {
24 u32 compression_level;
29 struct squashfs_xz_opts {
31 u32 executable_filters;
34 struct squashfs_lz4_opts {
39 struct squashfs_zstd_opts {
40 u32 compression_level;
43 struct squashfs_lzo_opts {
48 union squashfs_compression_opts {
49 struct squashfs_gzip_opts *gzip;
50 struct squashfs_xz_opts *xz;
51 struct squashfs_lz4_opts *lz4;
52 struct squashfs_zstd_opts *zstd;
53 struct squashfs_lzo_opts *lzo;
56 int sqfs_decompress(struct squashfs_ctxt *ctxt, void *dest,
57 unsigned long *dest_len, void *source, u32 src_len);
58 int sqfs_decompressor_init(struct squashfs_ctxt *ctxt);
59 void sqfs_decompressor_cleanup(struct squashfs_ctxt *ctxt);
61 #endif /* SQFS_DECOMPRESSOR_H */