2 * Squashfs - a compressed read only filesystem for Linux
4 * Copyright (c) 2002, 2003, 2004, 2005, 2006
5 * Phillip Lougher <phillip@lougher.org.uk>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2,
10 * or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
25 #undef CONFIG_SQUASHFS_1_0_COMPATIBILITY
29 #define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args)
31 #define TRACE(s, args...) {}
34 #define ERROR(s, args...) printk(KERN_NOTICE "SQUASHFS error: "s, ## args)
36 #define SERROR(s, args...) do { \
38 printk(KERN_ERR "SQUASHFS error: "s, ## args);\
41 #define WARNING(s, args...) printk(KERN_WARNING "SQUASHFS: "s, ## args)
43 static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode)
45 return list_entry(inode, struct squashfs_inode_info, vfs_inode);
48 #if defined(CONFIG_SQUASHFS_1_0_COMPATIBILITY ) || defined(CONFIG_SQUASHFS_2_0_COMPATIBILITY)
50 extern unsigned int squashfs_read_data(struct super_block *s, char *buffer,
51 long long index, unsigned int length,
52 long long *next_index, int srclength);
53 extern int squashfs_get_cached_block(struct super_block *s, char *buffer,
54 long long block, unsigned int offset,
55 int length, long long *next_block,
56 unsigned int *next_offset);
57 extern void release_cached_fragment(struct squashfs_sb_info *msblk, struct
58 squashfs_fragment_cache *fragment);
59 extern struct squashfs_fragment_cache *get_cached_fragment(struct super_block
60 *s, long long start_block,
62 extern struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode, unsigned int inode_number);
63 extern struct address_space_operations squashfs_symlink_aops;
64 extern struct address_space_operations squashfs_aops;
65 extern struct address_space_operations squashfs_aops_4K;
66 extern struct inode_operations squashfs_dir_inode_ops;
68 #define SQSH_EXTERN static
71 #ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
72 extern int squashfs_1_0_supported(struct squashfs_sb_info *msblk);
74 static inline int squashfs_1_0_supported(struct squashfs_sb_info *msblk)
80 #ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY
81 extern int squashfs_2_0_supported(struct squashfs_sb_info *msblk);
83 static inline int squashfs_2_0_supported(struct squashfs_sb_info *msblk)