1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Squashfs - a compressed read only filesystem for Linux 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008 6*4882a593Smuzhiyun * Phillip Lougher <phillip@squashfs.org.uk> 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * squashfs.h 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #define TRACE(s, args...) pr_debug("SQUASHFS: "s, ## args) 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define ERROR(s, args...) pr_err("SQUASHFS error: "s, ## args) 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define WARNING(s, args...) pr_warn("SQUASHFS: "s, ## args) 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* block.c */ 18*4882a593Smuzhiyun extern int squashfs_read_data(struct super_block *, u64, int, u64 *, 19*4882a593Smuzhiyun struct squashfs_page_actor *); 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun /* cache.c */ 22*4882a593Smuzhiyun extern struct squashfs_cache *squashfs_cache_init(char *, int, int); 23*4882a593Smuzhiyun extern void squashfs_cache_delete(struct squashfs_cache *); 24*4882a593Smuzhiyun extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *, 25*4882a593Smuzhiyun struct squashfs_cache *, u64, int); 26*4882a593Smuzhiyun extern void squashfs_cache_put(struct squashfs_cache_entry *); 27*4882a593Smuzhiyun extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int); 28*4882a593Smuzhiyun extern int squashfs_read_metadata(struct super_block *, void *, u64 *, 29*4882a593Smuzhiyun int *, int); 30*4882a593Smuzhiyun extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *, 31*4882a593Smuzhiyun u64, int); 32*4882a593Smuzhiyun extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *, 33*4882a593Smuzhiyun u64, int); 34*4882a593Smuzhiyun extern void *squashfs_read_table(struct super_block *, u64, int); 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* decompressor.c */ 37*4882a593Smuzhiyun extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int); 38*4882a593Smuzhiyun extern void *squashfs_decompressor_setup(struct super_block *, unsigned short); 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun /* decompressor_xxx.c */ 41*4882a593Smuzhiyun extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *); 42*4882a593Smuzhiyun extern void squashfs_decompressor_destroy(struct squashfs_sb_info *); 43*4882a593Smuzhiyun extern int squashfs_decompress(struct squashfs_sb_info *, struct bio *, 44*4882a593Smuzhiyun int, int, struct squashfs_page_actor *); 45*4882a593Smuzhiyun extern int squashfs_max_decompressors(void); 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun /* export.c */ 48*4882a593Smuzhiyun extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64, 49*4882a593Smuzhiyun unsigned int); 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun /* fragment.c */ 52*4882a593Smuzhiyun extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *); 53*4882a593Smuzhiyun extern __le64 *squashfs_read_fragment_index_table(struct super_block *, 54*4882a593Smuzhiyun u64, u64, unsigned int); 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun /* file.c */ 57*4882a593Smuzhiyun void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int); 58*4882a593Smuzhiyun void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int, 59*4882a593Smuzhiyun int); 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun /* file_xxx.c */ 62*4882a593Smuzhiyun extern int squashfs_readpage_block(struct page *, u64, int, int); 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun /* id.c */ 65*4882a593Smuzhiyun extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *); 66*4882a593Smuzhiyun extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64, 67*4882a593Smuzhiyun unsigned short); 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun /* inode.c */ 70*4882a593Smuzhiyun extern struct inode *squashfs_iget(struct super_block *, long long, 71*4882a593Smuzhiyun unsigned int); 72*4882a593Smuzhiyun extern int squashfs_read_inode(struct inode *, long long); 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun /* xattr.c */ 75*4882a593Smuzhiyun extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t); 76*4882a593Smuzhiyun 77*4882a593Smuzhiyun /* 78*4882a593Smuzhiyun * Inodes, files, decompressor and xattr operations 79*4882a593Smuzhiyun */ 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun /* dir.c */ 82*4882a593Smuzhiyun extern const struct file_operations squashfs_dir_ops; 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun /* export.c */ 85*4882a593Smuzhiyun extern const struct export_operations squashfs_export_ops; 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun /* file.c */ 88*4882a593Smuzhiyun extern const struct address_space_operations squashfs_aops; 89*4882a593Smuzhiyun 90*4882a593Smuzhiyun /* inode.c */ 91*4882a593Smuzhiyun extern const struct inode_operations squashfs_inode_ops; 92*4882a593Smuzhiyun 93*4882a593Smuzhiyun /* namei.c */ 94*4882a593Smuzhiyun extern const struct inode_operations squashfs_dir_inode_ops; 95*4882a593Smuzhiyun 96*4882a593Smuzhiyun /* symlink.c */ 97*4882a593Smuzhiyun extern const struct address_space_operations squashfs_symlink_aops; 98*4882a593Smuzhiyun extern const struct inode_operations squashfs_symlink_inode_ops; 99*4882a593Smuzhiyun 100*4882a593Smuzhiyun /* xattr.c */ 101*4882a593Smuzhiyun extern const struct xattr_handler *squashfs_xattr_handlers[]; 102