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 */ |
51 | static int |
52 | ptmget_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. */ |
66 | static int |
67 | compat_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 | */ |
94 | int |
95 | compat_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 | |
108 | int |
109 | compat_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 | |