root/fs/squashfs/squashfs.h

INCLUDED FROM

   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 buffer_head **,
  44         int, 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[];