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_warn("SQUASHFS: "s, ## args) 29 30 /* block.c */ 31 extern int squashfs_read_data(struct super_block *, u64, int, u64 *, 32 struct squashfs_page_actor *); 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_setup(struct super_block *, unsigned short); 52 53 /* decompressor_xxx.c */ 54 extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *); 55 extern void squashfs_decompressor_destroy(struct squashfs_sb_info *); 56 extern int squashfs_decompress(struct squashfs_sb_info *, struct buffer_head **, 57 int, int, int, struct squashfs_page_actor *); 58 extern int squashfs_max_decompressors(void); 59 60 /* export.c */ 61 extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64, 62 unsigned int); 63 64 /* fragment.c */ 65 extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *); 66 extern __le64 *squashfs_read_fragment_index_table(struct super_block *, 67 u64, u64, unsigned int); 68 69 /* file.c */ 70 void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int, 71 int); 72 73 /* file_xxx.c */ 74 extern int squashfs_readpage_block(struct page *, u64, int); 75 76 /* id.c */ 77 extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *); 78 extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64, 79 unsigned short); 80 81 /* inode.c */ 82 extern struct inode *squashfs_iget(struct super_block *, long long, 83 unsigned int); 84 extern int squashfs_read_inode(struct inode *, long long); 85 86 /* xattr.c */ 87 extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t); 88 89 /* 90 * Inodes, files, decompressor and xattr operations 91 */ 92 93 /* dir.c */ 94 extern const struct file_operations squashfs_dir_ops; 95 96 /* export.c */ 97 extern const struct export_operations squashfs_export_ops; 98 99 /* file.c */ 100 extern const struct address_space_operations squashfs_aops; 101 102 /* inode.c */ 103 extern const struct inode_operations squashfs_inode_ops; 104 105 /* namei.c */ 106 extern const struct inode_operations squashfs_dir_inode_ops; 107 108 /* symlink.c */ 109 extern const struct address_space_operations squashfs_symlink_aops; 110 extern const struct inode_operations squashfs_symlink_inode_ops; 111 112 /* xattr.c */ 113 extern const struct xattr_handler *squashfs_xattr_handlers[]; 114