LXR linux/include/linux/devpts

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/* -*- linux-c -*- --------------------------------------------------------- *
   3 *
   4 * linux/include/linux/devpts_fs.h
   5 *
   6 *  Copyright 1998-2004 H. Peter Anvin -- All Rights Reserved
   7 *
   8 * ------------------------------------------------------------------------- */
   9
  10#ifndef _LINUX_DEVPTS_FS_H
  11#define _LINUX_DEVPTS_FS_H
  12
  13#include <linux/errno.h>
  14
  15#ifdef CONFIG_UNIX98_PTYS
  16
  17struct pts_fs_info;
  18
  19struct vfsmount *devpts_mntget(struct file *, struct pts_fs_info *);
  20struct pts_fs_info *devpts_acquire(struct file *);
  21void devpts_release(struct pts_fs_info *);
  22
  23int devpts_new_index(struct pts_fs_info *);
  24void devpts_kill_index(struct pts_fs_info *, int);
  25
  26/* mknod in devpts */
  27struct dentry *devpts_pty_new(struct pts_fs_info *, int, void *);
  28/* get private structure */
  29void *devpts_get_priv(struct dentry *);
  30/* unlink */
  31void devpts_pty_kill(struct dentry *);
  32
  33/* in pty.c */
  34int ptm_open_peer(struct file *master, struct tty_struct *tty, int flags);
  35
  36#else
  37static inline int
  38ptm_open_peer(struct file *master, struct tty_struct *tty, int flags)
  39{
  40        return -EIO;
  41}
  42#endif
  43
  44
  45#endif /* _LINUX_DEVPTS_FS_H */
  46