| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | #ifndef DECOMPRESSOR_H |
| 3 | #define DECOMPRESSOR_H |
| 4 | /* |
| 5 | * Squashfs - a compressed read only filesystem for Linux |
| 6 | * |
| 7 | * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
| 8 | * Phillip Lougher <phillip@squashfs.org.uk> |
| 9 | * |
| 10 | * decompressor.h |
| 11 | */ |
| 12 | |
| 13 | struct squashfs_decompressor { |
| 14 | void *(*init)(struct squashfs_sb_info *, void *); |
| 15 | void *(*comp_opts)(struct squashfs_sb_info *, void *, int); |
| 16 | void (*free)(void *); |
| 17 | int (*decompress)(struct squashfs_sb_info *, void *, |
| 18 | struct buffer_head **, int, int, int, |
| 19 | struct squashfs_page_actor *); |
| 20 | int id; |
| 21 | char *name; |
| 22 | int supported; |
| 23 | }; |
| 24 | |
| 25 | static inline void *squashfs_comp_opts(struct squashfs_sb_info *msblk, |
| 26 | void *buff, int length) |
| 27 | { |
| 28 | return msblk->decompressor->comp_opts ? |
| 29 | msblk->decompressor->comp_opts(msblk, buff, length) : NULL; |
| 30 | } |
| 31 | |
| 32 | #ifdef CONFIG_SQUASHFS_XZ |
| 33 | extern const struct squashfs_decompressor squashfs_xz_comp_ops; |
| 34 | #endif |
| 35 | |
| 36 | #ifdef CONFIG_SQUASHFS_LZ4 |
| 37 | extern const struct squashfs_decompressor squashfs_lz4_comp_ops; |
| 38 | #endif |
| 39 | |
| 40 | #ifdef CONFIG_SQUASHFS_LZO |
| 41 | extern const struct squashfs_decompressor squashfs_lzo_comp_ops; |
| 42 | #endif |
| 43 | |
| 44 | #ifdef CONFIG_SQUASHFS_ZLIB |
| 45 | extern const struct squashfs_decompressor squashfs_zlib_comp_ops; |
| 46 | #endif |
| 47 | |
| 48 | #ifdef CONFIG_SQUASHFS_ZSTD |
| 49 | extern const struct squashfs_decompressor squashfs_zstd_comp_ops; |
| 50 | #endif |
| 51 | |
| 52 | #endif |