| /* |
| * Squashfs - a compressed read only filesystem for Linux |
| * |
| * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
| * Phillip Lougher <phillip@lougher.demon.co.uk> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2, |
| * or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| * |
| * decompressor.c |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/mutex.h> |
| #include <linux/buffer_head.h> |
| |
| #include "squashfs_fs.h" |
| #include "squashfs_fs_sb.h" |
| #include "squashfs_fs_i.h" |
| #include "decompressor.h" |
| #include "squashfs.h" |
| |
| /* |
| * This file (and decompressor.h) implements a decompressor framework for |
| * Squashfs, allowing multiple decompressors to be easily supported |
| */ |
| |
| static const struct squashfs_decompressor squashfs_unknown_comp_ops = { |
| NULL, NULL, NULL, 0, "unknown", 0 |
| }; |
| |
| static const struct squashfs_decompressor *decompressor[] = { |
| &squashfs_zlib_comp_ops, |
| &squashfs_unknown_comp_ops |
| }; |
| |
| |
| const struct squashfs_decompressor *squashfs_lookup_decompressor(int id) |
| { |
| int i; |
| |
| for (i = 0; decompressor[i]->id; i++) |
| if (id == decompressor[i]->id) |
| break; |
| |
| return decompressor[i]; |
| } |