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 */ 49