LXR linux/include/linux/devpts

   1/* -*- linux-c -*- --------------------------------------------------------- *
   2 *
   3 * linux/include/linux/devpts_fs.h
   4 *
   5 *  Copyright 1998-2004 H. Peter Anvin -- All Rights Reserved
   6 *
   7 * This file is part of the Linux kernel and is made available under
   8 * the terms of the GNU General Public License, version 2, or at your
   9 * option, any later version, incorporated herein by reference.
  10 *
  11 * ------------------------------------------------------------------------- */
  12
  13#ifndef _LINUX_DEVPTS_FS_H
  14#define _LINUX_DEVPTS_FS_H
  15
  16#include <linux/errno.h>
  17
  18#ifdef CONFIG_UNIX98_PTYS
  19
  20struct pts_fs_info;
  21
  22struct vfsmount *devpts_mntget(struct file *, struct pts_fs_info *);
  23struct pts_fs_info *devpts_acquire(struct file *);
  24void devpts_release(struct pts_fs_info *);
  25
  26int devpts_new_index(struct pts_fs_info *);
  27void devpts_kill_index(struct pts_fs_info *, int);
  28
  29/* mknod in devpts */
  30struct dentry *devpts_pty_new(struct pts_fs_info *, int, void *);
  31/* get private structure */
  32void *devpts_get_priv(struct dentry *);
  33/* unlink */
  34void devpts_pty_kill(struct dentry *);
  35
  36/* in pty.c */
  37int ptm_open_peer(struct file *master, struct tty_struct *tty, int flags);
  38
  39#else
  40static inline int
  41ptm_open_peer(struct file *master, struct tty_struct *tty, int flags)
  42{
  43        return -EIO;
  44}
  45#endif
  46
  47
  48#endif /* _LINUX_DEVPTS_FS_H */
  49