1 /*
2 * Squashfs - a compressed read only filesystem for Linux
3 *
4 * Copyright (c) 2002, 2003, 2004, 2005, 2006
5 * Phillip Lougher <phillip@lougher.demon.co.uk>
6 *
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.
11 *
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.
16 *
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.
20 *
21 * squashfs.h
22 */
23
24 #ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
25 #undef CONFIG_SQUASHFS_1_0_COMPATIBILITY
26 #endif
27 #ifdef SQUASHFS_TRACE
28 #define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args)
29 #else
30 #define TRACE(s, args...) {}
31 #endif
32
33 #define ERROR(s, args...) printk(KERN_ERR "SQUASHFS error: "s, ## args)
34
35 #define SERROR(s, args...) do { \
36 if (!silent) \
37 printk(KERN_ERR "SQUASHFS error: "s, ## args);\
38 } while(0)
39
40 #define WARNING(s, args...) printk(KERN_WARNING "SQUASHFS: "s, ## args)
41
42 #define SQUASHFS_I(INO) (&INO->u.squashfs_i)
43
44 #define i_size_read(INO) (INO->i_size)
45
46 #if defined(CONFIG_SQUASHFS_1_0_COMPATIBILITY ) || defined(CONFIG_SQUASHFS_2_0_COMPATIBILITY)
47 #define SQSH_EXTERN
48 extern unsigned int squashfs_read_data(struct super_block *s, char *buffer,
49 long long index, unsigned int length,
50 long long *next_index);
51 extern int squashfs_get_cached_block(struct super_block *s, char *buffer,
52 long long block, unsigned int offset,
53 int length, long long *next_block,
54 unsigned int *next_offset);
55 extern void release_cached_fragment(struct squashfs_sb_info *msblk, struct
56 squashfs_fragment_cache *fragment);
57 extern struct squashfs_fragment_cache *get_cached_fragment(struct super_block
58 *s, long long start_block,
59 int length);
60 extern struct address_space_operations squashfs_symlink_aops;
61 extern struct address_space_operations squashfs_aops;
62 extern struct address_space_operations squashfs_aops_4K;
63 extern struct file_operations squashfs_dir_ops;
64 extern struct inode_operations squashfs_dir_inode_ops;
65 #else
66 #define SQSH_EXTERN static
67 #endif
68
69 #ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
70 extern int squashfs_1_0_supported(struct squashfs_sb_info *msblk);
71 #else
squashfs_1_0_supported(struct squashfs_sb_info * msblk)72 static inline int squashfs_1_0_supported(struct squashfs_sb_info *msblk)
73 {
74 return 0;
75 }
76 #endif
77
78 #ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY
79 extern int squashfs_2_0_supported(struct squashfs_sb_info *msblk);
80 #else
squashfs_2_0_supported(struct squashfs_sb_info * msblk)81 static inline int squashfs_2_0_supported(struct squashfs_sb_info *msblk)
82 {
83 return 0;
84 }
85 #endif
86