f11afb6124
The goal is to stop setting and using tty->driver_data in devpts code. It should be used solely by the driver's code, pty in this case. Now driver_data are managed only in the pty driver. devpts_pty_new is switched to accept what we used to dig out of tty_struct, i.e. device node number and index. This also removes a note about driver_data being set outside of the driver. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/* -*- linux-c -*- --------------------------------------------------------- *
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*
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* linux/include/linux/devpts_fs.h
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*
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* Copyright 1998-2004 H. Peter Anvin -- All Rights Reserved
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*
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* This file is part of the Linux kernel and is made available under
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* the terms of the GNU General Public License, version 2, or at your
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* option, any later version, incorporated herein by reference.
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*
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* ------------------------------------------------------------------------- */
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#ifndef _LINUX_DEVPTS_FS_H
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#define _LINUX_DEVPTS_FS_H
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#include <linux/errno.h>
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#ifdef CONFIG_UNIX98_PTYS
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int devpts_new_index(struct inode *ptmx_inode);
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void devpts_kill_index(struct inode *ptmx_inode, int idx);
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/* mknod in devpts */
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struct inode *devpts_pty_new(struct inode *ptmx_inode, dev_t device, int index,
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void *priv);
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/* get private structure */
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void *devpts_get_priv(struct inode *pts_inode);
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/* unlink */
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void devpts_pty_kill(struct inode *inode);
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#else
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/* Dummy stubs in the no-pty case */
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static inline int devpts_new_index(struct inode *ptmx_inode) { return -EINVAL; }
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static inline void devpts_kill_index(struct inode *ptmx_inode, int idx) { }
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static inline struct inode *devpts_pty_new(struct inode *ptmx_inode,
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dev_t device, int index, void *priv)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline void *devpts_get_priv(struct inode *pts_inode)
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{
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return NULL;
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}
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static inline void devpts_pty_kill(struct inode *inode) { }
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#endif
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#endif /* _LINUX_DEVPTS_FS_H */
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