SQUASHFS/squashfs-tools-4.4/kernel/kernel-2.4/fs/squashfs/squashfs.h

   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
  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
  81 static inline int squashfs_2_0_supported(struct squashfs_sb_info *msblk)
  82 {
  83         return 0;
  84 }
  85 #endif