/* fs/ internal definitions
   *
   * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
   * Written by David Howells (dhowells@redhat.com)
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version
   * 2 of the License, or (at your option) any later version.
   */

  struct super_block;

  struct file_system_type;

  struct linux_binprm;

  struct path;

  struct mount;

  /*
   * block_dev.c
   */

  #ifdef CONFIG_BLOCK

  extern void __init bdev_cache_init(void);

  extern int __sync_blockdev(struct block_device *bdev, int wait);

  #else

  static inline void bdev_cache_init(void)
  {
  }

  static inline int __sync_blockdev(struct block_device *bdev, int wait)
  {
  	return 0;
  }

  #endif

  /*
   * char_dev.c
   */
  extern void __init chrdev_init(void);
  
  /*

   * namei.c
   */
  extern int __inode_permission(struct inode *, int);

  extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
  extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
  			   const char *, unsigned int, struct path *);

  
  /*

   * namespace.c
   */
  extern int copy_mount_options(const void __user *, unsigned long *);

  extern int copy_mount_string(const void __user *, char **);

  extern struct vfsmount *lookup_mnt(struct path *);

  extern int finish_automount(struct vfsmount *, struct path *);

  extern int sb_prepare_remount_readonly(struct super_block *);

  extern void __init mnt_init(void);

  extern int __mnt_want_write(struct vfsmount *);
  extern int __mnt_want_write_file(struct file *);
  extern void __mnt_drop_write(struct vfsmount *);
  extern void __mnt_drop_write_file(struct file *);

  /*
   * fs_struct.c
   */

  extern void chroot_fs_refs(const struct path *, const struct path *);

  
  /*
   * file_table.c
   */

  extern struct file *get_empty_filp(void);

  
  /*
   * super.c
   */
  extern int do_remount_sb(struct super_block *, int, void *, int);

  extern bool grab_super_passive(struct super_block *sb);

  extern struct dentry *mount_fs(struct file_system_type *,
  			       int, const char *, void *);

  extern struct super_block *user_get_super(dev_t);

  
  /*
   * open.c
   */

  struct open_flags {
  	int open_flag;

  	umode_t mode;

  	int acc_mode;
  	int intent;

  	int lookup_flags;

  };

  extern struct file *do_filp_open(int dfd, struct filename *pathname,

  		const struct open_flags *op);

  extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,

  		const char *, const struct open_flags *);

  extern long do_handle_open(int mountdirfd,
  			   struct file_handle __user *ufh, int open_flag);

  extern int open_check_o_direct(struct file *f);

  /*
   * inode.c
   */

  extern spinlock_t inode_sb_list_lock;

  extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan,
  			    int nid);

  extern void inode_add_lru(struct inode *inode);

  /*
   * fs-writeback.c
   */
  extern void inode_wb_list_del(struct inode *inode);

  extern long get_nr_dirty_inodes(void);

  extern void evict_inodes(struct super_block *);

  extern int invalidate_inodes(struct super_block *, bool);

  
  /*
   * dcache.c
   */
  extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);

  extern int d_set_mounted(struct dentry *dentry);

  extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,
  			    int nid);

  
  /*
   * read_write.c
   */
  extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);

  extern int rw_verify_area(int, struct file *, const loff_t *, size_t);

  
  /*

   * splice.c
   */
  extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
  		loff_t *opos, size_t len, unsigned int flags);
  
  /*

   * pipe.c
   */
  extern const struct file_operations pipefifo_fops;