source: src/linux/universal/linux-4.9/fs/squashfs/decompressor.h @ 31630

Last change on this file since 31630 was 31630, checked in by brainslayer, 12 days ago

new fs is compatible with standard squashfs, just smaller

File size: 1.9 KB
Line 
1#ifndef DECOMPRESSOR_H
2#define DECOMPRESSOR_H
3/*
4 * Squashfs - a compressed read only filesystem for Linux
5 *
6 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
7 * Phillip Lougher <phillip@squashfs.org.uk>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2,
12 * or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22 *
23 * decompressor.h
24 */
25
26struct squashfs_decompressor {
27        void    *(*init)(struct squashfs_sb_info *, void *);
28        void    *(*comp_opts)(struct squashfs_sb_info *, void *, int);
29        void    (*free)(void *);
30        int     (*decompress)(struct squashfs_sb_info *, void *,
31                struct buffer_head **, int, int, int,
32                struct squashfs_page_actor *);
33        int     id;
34        char    *name;
35        int     supported;
36};
37
38static inline void *squashfs_comp_opts(struct squashfs_sb_info *msblk,
39                                                        void *buff, int length)
40{
41        return msblk->decompressor->comp_opts ?
42                msblk->decompressor->comp_opts(msblk, buff, length) : NULL;
43}
44
45#ifdef CONFIG_SQUASHFS_XZ
46extern const struct squashfs_decompressor squashfs_xz_comp_ops;
47#endif
48
49#ifdef CONFIG_SQUASHFS_LZ4
50extern const struct squashfs_decompressor squashfs_lz4_comp_ops;
51#endif
52
53#ifdef CONFIG_SQUASHFS_LZO
54extern const struct squashfs_decompressor squashfs_lzo_comp_ops;
55#endif
56
57#ifdef CONFIG_SQUASHFS_ZLIB
58extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
59#endif
60
61#endif
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