include/linux/devpts_fs.h

   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
  20 struct pts_fs_info;
  21
  22 struct vfsmount *devpts_mntget(struct file *, struct pts_fs_info *);
  23 struct pts_fs_info *devpts_acquire(struct file *);
  24 void devpts_release(struct pts_fs_info *);
  25
  26 int devpts_new_index(struct pts_fs_info *);
  27 void devpts_kill_index(struct pts_fs_info *, int);
  28
  29 /* mknod in devpts */
  30 struct dentry *devpts_pty_new(struct pts_fs_info *, int, void *);
  31 /* get private structure */
  32 void *devpts_get_priv(struct dentry *);
  33 /* unlink */
  34 void devpts_pty_kill(struct dentry *);
  35
  36 /* in pty.c */
  37 int ptm_open_peer(struct file *master, struct tty_struct *tty, int flags);
  38
  39 #else
  40 static inline int
  41 ptm_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 */