1/* $NetBSD: tty_60.c,v 1.4 2015/10/22 15:18:25 christos Exp $ */
2
3/*-
4 * Copyright (c) 2012 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Alan Barrett
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: tty_60.c,v 1.4 2015/10/22 15:18:25 christos Exp $");
34
35#if defined(_KERNEL_OPT)
36#include "opt_compat_netbsd.h"
37#endif
38
39#include <sys/types.h>
40
41#include <sys/conf.h>
42#include <sys/errno.h>
43#include <sys/systm.h>
44
45#include <sys/tty.h>
46#include <compat/sys/ttycom.h>
47
48#ifdef COMPAT_60
49
50/* convert struct ptmget to struct compat_60_ptmget */
51static int
52ptmget_to_ptmget60(struct ptmget *pg, struct compat_60_ptmget *pg60)
53{
54 memset(pg60, 0, sizeof(*pg60));
55 pg60->cfd = pg->cfd;
56 pg60->sfd = pg->sfd;
57 strlcpy(pg60->cn, pg->cn, sizeof(pg60->cn));
58 strlcpy(pg60->sn, pg->sn, sizeof(pg60->sn));
59 if (strlen(pg->cn) >= sizeof(pg60->cn)
60 || strlen(pg->sn) >= sizeof(pg60->sn))
61 return E2BIG;
62 return 0;
63}
64
65/* Helper for compat ioctls that use struct compat_60_ptmget. */
66static int
67compat_60_ptmget_ioctl(dev_t dev, u_long cmd, void *data, int flag,
68 struct lwp *l)
69{
70 int ret;
71 u_long newcmd;
72 struct ptmget pg;
73 const struct cdevsw *cd = cdevsw_lookup(dev);
74
75 if (cd == NULL || cd->d_ioctl == NULL)
76 return ENXIO;
77
78 switch (cmd) {
79 case COMPAT_60_TIOCPTMGET: newcmd = TIOCPTMGET; break;
80 case COMPAT_60_TIOCPTSNAME: newcmd = TIOCPTSNAME; break;
81 default: return ENOTTY;
82 }
83
84 ret = (cd->d_ioctl)(dev, newcmd, &pg, flag, l);
85 if (ret != 0)
86 return ret;
87 ret = ptmget_to_ptmget60(&pg, data);
88 return ret;
89}
90
91/*
92 * COMPAT_60 versions of ttioctl and ptmioctl.
93 */
94int
95compat_60_ttioctl(struct tty *tp, u_long cmd, void *data, int flag,
96 struct lwp *l)
97{
98
99 switch (cmd) {
100 case COMPAT_60_TIOCPTMGET:
101 case COMPAT_60_TIOCPTSNAME:
102 return compat_60_ptmget_ioctl(tp->t_dev, cmd, data, flag, l);
103 default:
104 return EPASSTHROUGH;
105 }
106}
107
108int
109compat_60_ptmioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
110{
111
112 switch (cmd) {
113 case COMPAT_60_TIOCPTMGET:
114 return compat_60_ptmget_ioctl(dev, cmd, data, flag, l);
115 default:
116 return EPASSTHROUGH;
117 }
118}
119
120#endif /* COMPAT_60 */
121