1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Squashfs - a compressed read only filesystem for Linux 4 * 5 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008 6 * Phillip Lougher <phillip@squashfs.org.uk> 7 * 8 * squashfs.h 9 */ 10 11 #define TRACE(s, args...) pr_debug("SQUASHFS: "s, ## args) 12 13 #define ERROR(s, args...) pr_err("SQUASHFS error: "s, ## args) 14 15 #define WARNING(s, args...) pr_warn("SQUASHFS: "s, ## args) 16 17 /* block.c */ 18 extern int squashfs_read_data(struct super_block *, u64, int, u64 *, 19 struct squashfs_page_actor *); 20 21 /* cache.c */ 22 extern struct squashfs_cache *squashfs_cache_init(char *, int, int); 23 extern void squashfs_cache_delete(struct squashfs_cache *); 24 extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *, 25 struct squashfs_cache *, u64, int); 26 extern void squashfs_cache_put(struct squashfs_cache_entry *); 27 extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int); 28 extern int squashfs_read_metadata(struct super_block *, void *, u64 *, 29 int *, int); 30 extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *, 31 u64, int); 32 extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *, 33 u64, int); 34 extern void *squashfs_read_table(struct super_block *, u64, int); 35 36 /* decompressor.c */ 37 extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int); 38 extern void *squashfs_decompressor_setup(struct super_block *, unsigned short); 39 40 /* decompressor_xxx.c */ 41 extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *); 42 extern void squashfs_decompressor_destroy(struct squashfs_sb_info *); 43 extern int squashfs_decompress(struct squashfs_sb_info *, struct bio *, 44 int, int, struct squashfs_page_actor *); 45 extern int squashfs_max_decompressors(void); 46 47 /* export.c */ 48 extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64, 49 unsigned int); 50 51 /* fragment.c */ 52 extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *); 53 extern __le64 *squashfs_read_fragment_index_table(struct super_block *, 54 u64, u64, unsigned int); 55 56 /* file.c */ 57 void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int); 58 void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int, 59 int); 60 61 /* file_xxx.c */ 62 extern int squashfs_readpage_block(struct page *, u64, int, int); 63 64 /* id.c */ 65 extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *); 66 extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64, 67 unsigned short); 68 69 /* inode.c */ 70 extern struct inode *squashfs_iget(struct super_block *, long long, 71 unsigned int); 72 extern int squashfs_read_inode(struct inode *, long long); 73 74 /* xattr.c */ 75 extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t); 76 77 /* 78 * Inodes, files, decompressor and xattr operations 79 */ 80 81 /* dir.c */ 82 extern const struct file_operations squashfs_dir_ops; 83 84 /* export.c */ 85 extern const struct export_operations squashfs_export_ops; 86 87 /* file.c */ 88 extern const struct address_space_operations squashfs_aops; 89 90 /* inode.c */ 91 extern const struct inode_operations squashfs_inode_ops; 92 93 /* namei.c */ 94 extern const struct inode_operations squashfs_dir_inode_ops; 95 96 /* symlink.c */ 97 extern const struct address_space_operations squashfs_symlink_aops; 98 extern const struct inode_operations squashfs_symlink_inode_ops; 99 100 /* xattr.c */ 101 extern const struct xattr_handler *squashfs_xattr_handlers[]; 102