[mirror_ubuntu-bionic-kernel.git] / include / linux / devpts_fs.h

/* -*- 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_pty_new(struct tty_struct *tty);      /* mknod in devpts */
struct tty_struct *devpts_get_tty(int number);	 /* get tty structure */
void devpts_pty_kill(int number);		 /* unlink */

#else

/* Dummy stubs in the no-pty case */
static inline int devpts_pty_new(struct tty_struct *tty) { return -EINVAL; }
static inline struct tty_struct *devpts_get_tty(int number) { return NULL; }
static inline void devpts_pty_kill(int number) { }

#endif


#endif /* _LINUX_DEVPTS_FS_H */
Commit	Line	Data
1da177e4 LT	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	int devpts_pty_new(struct tty_struct tty); / mknod in devpts */
	21	struct tty_struct devpts_get_tty(int number); / get tty structure */
	22	void devpts_pty_kill(int number); /* unlink */
	23
	24	#else
	25
	26	/* Dummy stubs in the no-pty case */
	27	static inline int devpts_pty_new(struct tty_struct *tty) { return -EINVAL; }
	28	static inline struct tty_struct *devpts_get_tty(int number) { return NULL; }
	29	static inline void devpts_pty_kill(int number) { }
	30
	31	#endif
	32
	33
	34	#endif /* _LINUX_DEVPTS_FS_H */