1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/*
* OSS compatible sequencer driver
*
* OSS compatible i/o control
*
* Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "seq_oss_device.h"
#include "seq_oss_readq.h"
#include "seq_oss_writeq.h"
#include "seq_oss_timer.h"
#include "seq_oss_synth.h"
#include "seq_oss_midi.h"
#include "seq_oss_event.h"
static int snd_seq_oss_synth_info_user(struct seq_oss_devinfo *dp, void __user *arg)
{
struct synth_info info;
if (copy_from_user(&info, arg, sizeof(info)))
return -EFAULT;
if (snd_seq_oss_synth_make_info(dp, info.device, &info) < 0)
return -EINVAL;
if (copy_to_user(arg, &info, sizeof(info)))
return -EFAULT;
return 0;
}
static int snd_seq_oss_midi_info_user(struct seq_oss_devinfo *dp, void __user *arg)
{
struct midi_info info;
if (copy_from_user(&info, arg, sizeof(info)))
return -EFAULT;
if (snd_seq_oss_midi_make_info(dp, info.device, &info) < 0)
return -EINVAL;
if (copy_to_user(arg, &info, sizeof(info)))
return -EFAULT;
return 0;
}
static int snd_seq_oss_oob_user(struct seq_oss_devinfo *dp, void __user *arg)
{
unsigned char ev[8];
struct snd_seq_event tmpev;
if (copy_from_user(ev, arg, 8))
return -EFAULT;
memset(&tmpev, 0, sizeof(tmpev));
snd_seq_oss_fill_addr(dp, &tmpev, dp->addr.client, dp->addr.port);
tmpev.time.tick = 0;
if (! snd_seq_oss_process_event(dp, (union evrec *)ev, &tmpev)) {
snd_seq_oss_dispatch(dp, &tmpev, 0, 0);
}
return 0;
}
int
snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long carg)
{
int dev, val;
void __user *arg = (void __user *)carg;
int __user *p = arg;
switch (cmd) {
case SNDCTL_TMR_TIMEBASE:
case SNDCTL_TMR_TEMPO:
case SNDCTL_TMR_START:
case SNDCTL_TMR_STOP:
case SNDCTL_TMR_CONTINUE:
case SNDCTL_TMR_METRONOME:
case SNDCTL_TMR_SOURCE:
case SNDCTL_TMR_SELECT:
case SNDCTL_SEQ_CTRLRATE:
return snd_seq_oss_timer_ioctl(dp->timer, cmd, arg);
case SNDCTL_SEQ_PANIC:
snd_seq_oss_reset(dp);
return -EINVAL;
case SNDCTL_SEQ_SYNC:
if (! is_write_mode(dp->file_mode) || dp->writeq == NULL)
return 0;
while (snd_seq_oss_writeq_sync(dp->writeq))
;
if (signal_pending(current))
return -ERESTARTSYS;
return 0;
case SNDCTL_SEQ_RESET:
snd_seq_oss_reset(dp);
return 0;
case SNDCTL_SEQ_TESTMIDI:
if (get_user(dev, p))
return -EFAULT;
return snd_seq_oss_midi_open(dp, dev, dp->file_mode);
case SNDCTL_SEQ_GETINCOUNT:
if (dp->readq == NULL || ! is_read_mode(dp->file_mode))
return 0;
return put_user(dp->readq->qlen, p) ? -EFAULT : 0;
case SNDCTL_SEQ_GETOUTCOUNT:
if (! is_write_mode(dp->file_mode) || dp->writeq == NULL)
return 0;
return put_user(snd_seq_oss_writeq_get_free_size(dp->writeq), p) ? -EFAULT : 0;
case SNDCTL_SEQ_GETTIME:
return put_user(snd_seq_oss_timer_cur_tick(dp->timer), p) ? -EFAULT : 0;
case SNDCTL_SEQ_RESETSAMPLES:
if (get_user(dev, p))
return -EFAULT;
return snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
case SNDCTL_SEQ_NRSYNTHS:
return put_user(dp->max_synthdev, p) ? -EFAULT : 0;
case SNDCTL_SEQ_NRMIDIS:
return put_user(dp->max_mididev, p) ? -EFAULT : 0;
case SNDCTL_SYNTH_MEMAVL:
if (get_user(dev, p))
return -EFAULT;
val = snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
return put_user(val, p) ? -EFAULT : 0;
case SNDCTL_FM_4OP_ENABLE:
if (get_user(dev, p))
return -EFAULT;
snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
return 0;
case SNDCTL_SYNTH_INFO:
case SNDCTL_SYNTH_ID:
return snd_seq_oss_synth_info_user(dp, arg);
case SNDCTL_SEQ_OUTOFBAND:
return snd_seq_oss_oob_user(dp, arg);
case SNDCTL_MIDI_INFO:
return snd_seq_oss_midi_info_user(dp, arg);
case SNDCTL_SEQ_THRESHOLD:
if (! is_write_mode(dp->file_mode))
return 0;
if (get_user(val, p))
return -EFAULT;
if (val < 1)
val = 1;
if (val >= dp->writeq->maxlen)
val = dp->writeq->maxlen - 1;
snd_seq_oss_writeq_set_output(dp->writeq, val);
return 0;
case SNDCTL_MIDI_PRETIME:
if (dp->readq == NULL || !is_read_mode(dp->file_mode))
return 0;
if (get_user(val, p))
return -EFAULT;
if (val <= 0)
val = -1;
else
val = (HZ * val) / 10;
dp->readq->pre_event_timeout = val;
return put_user(val, p) ? -EFAULT : 0;
default:
if (! is_write_mode(dp->file_mode))
return -EIO;
return snd_seq_oss_synth_ioctl(dp, 0, cmd, carg);
}
return 0;
}
|
