fs/squashfs/squashfs.h

   1 /*
   2  * Squashfs - a compressed read only filesystem for Linux
   3  *
   4  * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
   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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  *
  21  * squashfs.h
  22  */
  23
  24 #define TRACE(s, args...)       pr_debug("SQUASHFS: "s, ## args)
  25
  26 #define ERROR(s, args...)       pr_err("SQUASHFS error: "s, ## args)
  27
  28 #define WARNING(s, args...)     pr_warning("SQUASHFS: "s, ## args)
  29
  30 static inline struct squashfs_inode_info *squashfs_i(struct inode *inode)
  31 {
  32         return list_entry(inode, struct squashfs_inode_info, vfs_inode);
  33 }
  34
  35 /* block.c */
  36 extern int squashfs_read_data(struct super_block *, void **, u64, int, u64 *,
  37                                 int, int);
  38
  39 /* cache.c */
  40 extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
  41 extern void squashfs_cache_delete(struct squashfs_cache *);
  42 extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
  43                                 struct squashfs_cache *, u64, int);
  44 extern void squashfs_cache_put(struct squashfs_cache_entry *);
  45 extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
  46 extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
  47                                 int *, int);
  48 extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
  49                                 u64, int);
  50 extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
  51                                 u64, int);
  52 extern int squashfs_read_table(struct super_block *, void *, u64, int);
  53
  54 /* decompressor.c */
  55 extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
  56
  57 /* export.c */
  58 extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64,
  59                                 unsigned int);
  60
  61 /* fragment.c */
  62 extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
  63 extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
  64                                 u64, unsigned int);
  65
  66 /* id.c */
  67 extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
  68 extern __le64 *squashfs_read_id_index_table(struct super_block *, u64,
  69                                 unsigned short);
  70
  71 /* inode.c */
  72 extern struct inode *squashfs_iget(struct super_block *, long long,
  73                                 unsigned int);
  74 extern int squashfs_read_inode(struct inode *, long long);
  75
  76 /* xattr.c */
  77 extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
  78
  79 /*
  80  * Inodes, files,  decompressor and xattr operations
  81  */
  82
  83 /* dir.c */
  84 extern const struct file_operations squashfs_dir_ops;
  85
  86 /* export.c */
  87 extern const struct export_operations squashfs_export_ops;
  88
  89 /* file.c */
  90 extern const struct address_space_operations squashfs_aops;
  91
  92 /* inode.c */
  93 extern const struct inode_operations squashfs_inode_ops;
  94
  95 /* namei.c */
  96 extern const struct inode_operations squashfs_dir_inode_ops;
  97
  98 /* symlink.c */
  99 extern const struct address_space_operations squashfs_symlink_aops;
 100 extern const struct inode_operations squashfs_symlink_inode_ops;
 101
 102 /* xattr.c */
 103 extern const struct xattr_handler *squashfs_xattr_handlers[];
 104
 105 /* zlib_wrapper.c */
 106 extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
 107
 108 /* lzo_wrapper.c */
 109 extern const struct squashfs_decompressor squashfs_lzo_comp_ops;