/* 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.
   */

  #include <linux/lglock.h>

  struct super_block;

  struct file_system_type;

  struct linux_binprm;

  struct path;

  /*
   * block_dev.c
   */

  #ifdef CONFIG_BLOCK

  extern struct super_block *blockdev_superblock;
  extern void __init bdev_cache_init(void);

  static inline int sb_is_blkdev_sb(struct super_block *sb)
  {
  	return sb == blockdev_superblock;
  }

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

  #else

  static inline void bdev_cache_init(void)
  {
  }

  static inline int sb_is_blkdev_sb(struct super_block *sb)
  {
  	return 0;
  }

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

  #endif

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

   * exec.c
   */

  extern int check_unsafe_exec(struct linux_binprm *);

  
  /*

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

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

  extern unsigned int mnt_get_count(struct vfsmount *mnt);

  extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);

  extern struct vfsmount *lookup_mnt(struct path *);

  extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
  				struct vfsmount *);
  extern void release_mounts(struct list_head *);
  extern void umount_tree(struct vfsmount *, int, struct list_head *);
  extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);

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

  extern void mnt_make_longterm(struct vfsmount *);
  extern void mnt_make_shortterm(struct vfsmount *);

  extern void __init mnt_init(void);

  DECLARE_BRLOCK(vfsmount_lock);

  /*
   * fs_struct.c
   */
  extern void chroot_fs_refs(struct path *, struct path *);

  
  /*
   * file_table.c
   */

  extern void file_sb_list_add(struct file *f, struct super_block *sb);
  extern void file_sb_list_del(struct file *f);

  extern void mark_files_ro(struct super_block *);

  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 void __put_super(struct super_block *sb);
  extern void put_super(struct super_block *sb);

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

  
  /*
   * open.c
   */
  struct nameidata;
  extern struct file *nameidata_to_filp(struct nameidata *);
  extern void release_open_intent(struct nameidata *);

  struct open_flags {
  	int open_flag;
  	int mode;
  	int acc_mode;
  	int intent;
  };
  extern struct file *do_filp_open(int dfd, const char *pathname,
  		const struct open_flags *op, int lookup_flags);

  extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
  		const char *, const struct open_flags *, int lookup_flags);

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

  /*
   * inode.c
   */

  extern spinlock_t inode_sb_list_lock;

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

  extern int 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 *);