4 * Squashfs - a compressed read only filesystem for Linux
6 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
7 * Phillip Lougher <phillip@squashfs.org.uk>
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.
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.
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.
26 struct squashfs_decompressor {
27 void *(*init)(struct squashfs_sb_info *, void *, int);
29 int (*decompress)(struct squashfs_sb_info *, void **,
30 struct buffer_head **, int, int, int, int, int);
36 static inline void squashfs_decompressor_free(struct squashfs_sb_info *msblk,
39 if (msblk->decompressor)
40 msblk->decompressor->free(s);
43 static inline int squashfs_decompress(struct squashfs_sb_info *msblk,
44 void **buffer, struct buffer_head **bh, int b, int offset, int length,
45 int srclength, int pages)
47 return msblk->decompressor->decompress(msblk, buffer, bh, b, offset,
48 length, srclength, pages);
51 #ifdef CONFIG_SQUASHFS_XZ
52 extern const struct squashfs_decompressor squashfs_xz_comp_ops;
55 #ifdef CONFIG_SQUASHFS_LZO
56 extern const struct squashfs_decompressor squashfs_lzo_comp_ops;
59 #ifdef CONFIG_SQUASHFS_ZLIB
60 extern const struct squashfs_decompressor squashfs_zlib_comp_ops;