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 int devpts_new_index(void);
  21 void devpts_kill_index(int idx);
  22 int devpts_pty_new(struct tty_struct *tty);      /* mknod in devpts */
  23 struct tty_struct *devpts_get_tty(int number);   /* get tty structure */
  24 void devpts_pty_kill(int number);                /* unlink */
  25
  26 #else
  27
  28 /* Dummy stubs in the no-pty case */
  29 static inline int devpts_new_index(void) { return -EINVAL; }
  30 static inline void devpts_kill_index(int idx) { }
  31 static inline int devpts_pty_new(struct tty_struct *tty) { return -EINVAL; }
  32 static inline struct tty_struct *devpts_get_tty(int number) { return NULL; }
  33 static inline void devpts_pty_kill(int number) { }
  34
  35 #endif
  36
  37
  38 #endif /* _LINUX_DEVPTS_FS_H */