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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Squashfs - a compressed read only filesystem for Linux
*
* Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
* Phillip Lougher <phillip@squashfs.org.uk>
*
* squashfs.h
*/
#define TRACE(s, args...) pr_debug("SQUASHFS: "s, ## args)
#define ERROR(s, args...) pr_err("SQUASHFS error: "s, ## args)
#define WARNING(s, args...) pr_warn("SQUASHFS: "s, ## args)
/* block.c */
extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
struct squashfs_page_actor *);
/* cache.c */
extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
extern void squashfs_cache_delete(struct squashfs_cache *);
extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
struct squashfs_cache *, u64, int);
extern void squashfs_cache_put(struct squashfs_cache_entry *);
extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
int *, int);
extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
u64, int);
extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
u64, int);
extern void *squashfs_read_table(struct super_block *, u64, int);
/* decompressor.c */
extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
extern void *squashfs_decompressor_setup(struct super_block *, unsigned short);
/* decompressor_xxx.c */
struct squashfs_decompressor_thread_ops {
void * (*create)(struct squashfs_sb_info *msblk, void *comp_opts);
void (*destroy)(struct squashfs_sb_info *msblk);
int (*decompress)(struct squashfs_sb_info *msblk, struct bio *bio,
int offset, int length, struct squashfs_page_actor *output);
int (*max_decompressors)(void);
};
#ifdef CONFIG_SQUASHFS_DECOMP_SINGLE
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_single;
#endif
#ifdef CONFIG_SQUASHFS_DECOMP_MULTI
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_multi;
#endif
#ifdef CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_percpu;
#endif
/* export.c */
extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
unsigned int);
/* fragment.c */
extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
u64, u64, unsigned int);
/* file.c */
void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
int);
/* file_xxx.c */
extern int squashfs_readpage_block(struct page *, u64, int, int);
/* id.c */
extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
unsigned short);
/* inode.c */
extern struct inode *squashfs_iget(struct super_block *, long long,
unsigned int);
extern int squashfs_read_inode(struct inode *, long long);
/* xattr.c */
extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
/*
* Inodes, files, decompressor and xattr operations
*/
/* dir.c */
extern const struct file_operations squashfs_dir_ops;
/* export.c */
extern const struct export_operations squashfs_export_ops;
/* file.c */
extern const struct address_space_operations squashfs_aops;
/* inode.c */
extern const struct inode_operations squashfs_inode_ops;
/* namei.c */
extern const struct inode_operations squashfs_dir_inode_ops;
/* symlink.c */
extern const struct address_space_operations squashfs_symlink_aops;
extern const struct inode_operations squashfs_symlink_inode_ops;
/* xattr.c */
extern const struct xattr_handler * const squashfs_xattr_handlers[];
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