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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(struct squashfs_ctxt *ctxt, void *dest,
- unsigned long *dest_len, void *source, u32 src_len);
- int sqfs_decompressor_init(struct squashfs_ctxt *ctxt);
- void sqfs_decompressor_cleanup(struct squashfs_ctxt *ctxt);
- #endif /* SQFS_DECOMPRESSOR_H */
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