Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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@lougher.demon.co.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 *);
28 void (*free)(void *);
29 int (*decompress)(struct squashfs_sb_info *, void **,
30 struct buffer_head **, int, int, int, int, int);
31 int id;
32 char *name;
33 int supported;
34};
35
36static inline void *squashfs_decompressor_init(struct squashfs_sb_info *msblk)
37{
38 return msblk->decompressor->init(msblk);
39}
40
41static inline void squashfs_decompressor_free(struct squashfs_sb_info *msblk,
42 void *s)
43{
44 if (msblk->decompressor)
45 msblk->decompressor->free(s);
46}
47
48static inline int squashfs_decompress(struct squashfs_sb_info *msblk,
49 void **buffer, struct buffer_head **bh, int b, int offset, int length,
50 int srclength, int pages)
51{
52 return msblk->decompressor->decompress(msblk, buffer, bh, b, offset,
53 length, srclength, pages);
54}
55
56#ifdef CONFIG_SQUASHFS_XZ
57extern const struct squashfs_decompressor squashfs_xz_comp_ops;
58#endif
59
60#ifdef CONFIG_SQUASHFS_LZO
61extern const struct squashfs_decompressor squashfs_lzo_comp_ops;
62#endif
63
64#endif