LXR linux/fs/squashfs/squashfs.h

   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 */
  18extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
  19                                struct squashfs_page_actor *);
  20
  21/* cache.c */
  22extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
  23extern void squashfs_cache_delete(struct squashfs_cache *);
  24extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
  25                                struct squashfs_cache *, u64, int);
  26extern void squashfs_cache_put(struct squashfs_cache_entry *);
  27extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
  28extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
  29                                int *, int);
  30extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
  31                                u64, int);
  32extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
  33                                u64, int);
  34extern void *squashfs_read_table(struct super_block *, u64, int);
  35
  36/* decompressor.c */
  37extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
  38extern void *squashfs_decompressor_setup(struct super_block *, unsigned short);
  39
  40/* decompressor_xxx.c */
  41extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *);
  42extern void squashfs_decompressor_destroy(struct squashfs_sb_info *);
  43extern int squashfs_decompress(struct squashfs_sb_info *, struct buffer_head **,
  44        int, int, int, struct squashfs_page_actor *);
  45extern int squashfs_max_decompressors(void);
  46
  47/* export.c */
  48extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
  49                                unsigned int);
  50
  51/* fragment.c */
  52extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
  53extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
  54                                u64, u64, unsigned int);
  55
  56/* file.c */
  57void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
  58void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
  59                                int);
  60
  61/* file_xxx.c */
  62extern int squashfs_readpage_block(struct page *, u64, int, int);
  63
  64/* id.c */
  65extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
  66extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
  67                                unsigned short);
  68
  69/* inode.c */
  70extern struct inode *squashfs_iget(struct super_block *, long long,
  71                                unsigned int);
  72extern int squashfs_read_inode(struct inode *, long long);
  73
  74/* xattr.c */
  75extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
  76
  77/*
  78 * Inodes, files,  decompressor and xattr operations
  79 */
  80
  81/* dir.c */
  82extern const struct file_operations squashfs_dir_ops;
  83
  84/* export.c */
  85extern const struct export_operations squashfs_export_ops;
  86
  87/* file.c */
  88extern const struct address_space_operations squashfs_aops;
  89
  90/* inode.c */
  91extern const struct inode_operations squashfs_inode_ops;
  92
  93/* namei.c */
  94extern const struct inode_operations squashfs_dir_inode_ops;
  95
  96/* symlink.c */
  97extern const struct address_space_operations squashfs_symlink_aops;
  98extern const struct inode_operations squashfs_symlink_inode_ops;
  99
 100/* xattr.c */
 101extern const struct xattr_handler *squashfs_xattr_handlers[];
 102