/* -*- linux-c -*- --------------------------------------------------------- *
   *
   * linux/include/linux/devpts_fs.h
   *
   *  Copyright 1998-2004 H. Peter Anvin -- All Rights Reserved
   *
   * This file is part of the Linux kernel and is made available under
   * the terms of the GNU General Public License, version 2, or at your
   * option, any later version, incorporated herein by reference.
   *
   * ------------------------------------------------------------------------- */
  
  #ifndef _LINUX_DEVPTS_FS_H
  #define _LINUX_DEVPTS_FS_H
  
  #include <linux/errno.h>
  
  #ifdef CONFIG_UNIX98_PTYS

  int devpts_new_index(struct inode *ptmx_inode);
  void devpts_kill_index(struct inode *ptmx_inode, int idx);
  /* mknod in devpts */
  int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty);
  /* get tty structure */
  struct tty_struct *devpts_get_tty(struct inode *pts_inode, int number);
  /* unlink */
  void devpts_pty_kill(struct tty_struct *tty);

  
  #else
  
  /* Dummy stubs in the no-pty case */

  static inline int devpts_new_index(struct inode *ptmx_inode) { return -EINVAL; }
  static inline void devpts_kill_index(struct inode *ptmx_inode, int idx) { }
  static inline int devpts_pty_new(struct inode *ptmx_inode,
  				struct tty_struct *tty)
  {
  	return -EINVAL;
  }
  static inline struct tty_struct *devpts_get_tty(struct inode *pts_inode,
  		int number)
  {
  	return NULL;
  }
  static inline void devpts_pty_kill(struct tty_struct *tty) { }

  
  #endif
  
  
  #endif /* _LINUX_DEVPTS_FS_H */