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 26 struct squashfs_decompressor { 27 void *(*init)(struct squashfs_sb_info *, void *, int); 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 36 static inline void squashfs_decompressor_free(struct squashfs_sb_info *msblk, 37 void *s) 38 { 39 if (msblk->decompressor) 40 msblk->decompressor->free(s); 41 } 42 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) 46 { 47 return msblk->decompressor->decompress(msblk, buffer, bh, b, offset, 48 length, srclength, pages); 49 } 50 51 #ifdef CONFIG_SQUASHFS_XZ 52 extern const struct squashfs_decompressor squashfs_xz_comp_ops; 53 #endif 54 55 #ifdef CONFIG_SQUASHFS_LZO 56 extern const struct squashfs_decompressor squashfs_lzo_comp_ops; 57 #endif 58 59 #ifdef CONFIG_SQUASHFS_ZLIB 60 extern const struct squashfs_decompressor squashfs_zlib_comp_ops; 61 #endif 62 63 #endif 64