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@squashfs.org.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 /* block.c */
  31 extern int squashfs_read_data(struct super_block *, void **, u64, int, u64 *,
  32                                 int, int);
  33
  34 /* cache.c */
  35 extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
  36 extern void squashfs_cache_delete(struct squashfs_cache *);
  37 extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
  38                                 struct squashfs_cache *, u64, int);
  39 extern void squashfs_cache_put(struct squashfs_cache_entry *);
  40 extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
  41 extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
  42                                 int *, int);
  43 extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
  44                                 u64, int);
  45 extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
  46                                 u64, int);
  47 extern void *squashfs_read_table(struct super_block *, u64, int);
  48
  49 /* decompressor.c */
  50 extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
  51 extern void *squashfs_decompressor_init(struct super_block *, unsigned short);
  52
  53 /* export.c */
  54 extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
  55                                 unsigned int);
  56
  57 /* fragment.c */
  58 extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
  59 extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
  60                                 u64, u64, unsigned int);
  61
  62 /* id.c */
  63 extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
  64 extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
  65                                 unsigned short);
  66
  67 /* inode.c */
  68 extern struct inode *squashfs_iget(struct super_block *, long long,
  69                                 unsigned int);
  70 extern int squashfs_read_inode(struct inode *, long long);
  71
  72 /* xattr.c */
  73 extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
  74
  75 /*
  76  * Inodes, files,  decompressor and xattr operations
  77  */
  78
  79 /* dir.c */
  80 extern const struct file_operations squashfs_dir_ops;
  81
  82 /* export.c */
  83 extern const struct export_operations squashfs_export_ops;
  84
  85 /* file.c */
  86 extern const struct address_space_operations squashfs_aops;
  87
  88 /* inode.c */
  89 extern const struct inode_operations squashfs_inode_ops;
  90
  91 /* namei.c */
  92 extern const struct inode_operations squashfs_dir_inode_ops;
  93
  94 /* symlink.c */
  95 extern const struct address_space_operations squashfs_symlink_aops;
  96 extern const struct inode_operations squashfs_symlink_inode_ops;
  97
  98 /* xattr.c */
  99 extern const struct xattr_handler *squashfs_xattr_handlers[];
 100
 101 /* zlib_wrapper.c */
 102 extern const struct squashfs_decompressor squashfs_zlib_comp_ops;