2
* 32bit -> 64bit ioctl wrapper for raw MIDI API
3
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
5
* This program is free software; you can redistribute it and/or modify
6
* it under the terms of the GNU General Public License as published by
7
* the Free Software Foundation; either version 2 of the License, or
8
* (at your option) any later version.
10
* This program is distributed in the hope that it will be useful,
11
* but WITHOUT ANY WARRANTY; without even the implied warranty of
12
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13
* GNU General Public License for more details.
15
* You should have received a copy of the GNU General Public License
16
* along with this program; if not, write to the Free Software
17
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21
/* This file included from rawmidi.c */
23
#include <linux/compat.h>
25
struct snd_rawmidi_params32 {
29
unsigned int no_active_sensing; /* avoid bit-field */
30
unsigned char reserved[16];
31
} __attribute__((packed));
33
static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile,
34
struct snd_rawmidi_params32 __user *src)
36
struct snd_rawmidi_params params;
39
if (rfile->output == NULL)
41
if (get_user(params.stream, &src->stream) ||
42
get_user(params.buffer_size, &src->buffer_size) ||
43
get_user(params.avail_min, &src->avail_min) ||
44
get_user(val, &src->no_active_sensing))
46
params.no_active_sensing = val;
47
switch (params.stream) {
48
case SNDRV_RAWMIDI_STREAM_OUTPUT:
49
return snd_rawmidi_output_params(rfile->output, ¶ms);
50
case SNDRV_RAWMIDI_STREAM_INPUT:
51
return snd_rawmidi_input_params(rfile->input, ¶ms);
56
struct snd_rawmidi_status32 {
58
struct compat_timespec tstamp;
61
unsigned char reserved[16];
62
} __attribute__((packed));
64
static int snd_rawmidi_ioctl_status_compat(struct snd_rawmidi_file *rfile,
65
struct snd_rawmidi_status32 __user *src)
68
struct snd_rawmidi_status status;
70
if (rfile->output == NULL)
72
if (get_user(status.stream, &src->stream))
75
switch (status.stream) {
76
case SNDRV_RAWMIDI_STREAM_OUTPUT:
77
err = snd_rawmidi_output_status(rfile->output, &status);
79
case SNDRV_RAWMIDI_STREAM_INPUT:
80
err = snd_rawmidi_input_status(rfile->input, &status);
88
if (put_user(status.tstamp.tv_sec, &src->tstamp.tv_sec) ||
89
put_user(status.tstamp.tv_nsec, &src->tstamp.tv_nsec) ||
90
put_user(status.avail, &src->avail) ||
91
put_user(status.xruns, &src->xruns))
98
SNDRV_RAWMIDI_IOCTL_PARAMS32 = _IOWR('W', 0x10, struct snd_rawmidi_params32),
99
SNDRV_RAWMIDI_IOCTL_STATUS32 = _IOWR('W', 0x20, struct snd_rawmidi_status32),
102
static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
104
struct snd_rawmidi_file *rfile;
105
void __user *argp = compat_ptr(arg);
107
rfile = file->private_data;
109
case SNDRV_RAWMIDI_IOCTL_PVERSION:
110
case SNDRV_RAWMIDI_IOCTL_INFO:
111
case SNDRV_RAWMIDI_IOCTL_DROP:
112
case SNDRV_RAWMIDI_IOCTL_DRAIN:
113
return snd_rawmidi_ioctl(file, cmd, (unsigned long)argp);
114
case SNDRV_RAWMIDI_IOCTL_PARAMS32:
115
return snd_rawmidi_ioctl_params_compat(rfile, argp);
116
case SNDRV_RAWMIDI_IOCTL_STATUS32:
117
return snd_rawmidi_ioctl_status_compat(rfile, argp);