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
|
/*
* 32bit -> 64bit ioctl wrapper for timer API
* Copyright (c) by 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
*
*/
/* This file included from timer.c */
#include <linux/compat.h>
/*
* ILP32/LP64 has different size for 'long' type. Additionally, the size
* of storage alignment differs depending on architectures. Here, '__packed'
* qualifier is used so that the size of this structure is multiple of 4 and
* it fits to any architectures with 32 bit storage alignment.
*/
struct snd_timer_gparams32 {
struct snd_timer_id tid;
u32 period_num;
u32 period_den;
unsigned char reserved[32];
} __packed;
struct snd_timer_info32 {
u32 flags;
s32 card;
unsigned char id[64];
unsigned char name[80];
u32 reserved0;
u32 resolution;
unsigned char reserved[64];
};
static int snd_timer_user_gparams_compat(struct file *file,
struct snd_timer_gparams32 __user *user)
{
struct snd_timer_gparams gparams;
if (copy_from_user(&gparams.tid, &user->tid, sizeof(gparams.tid)) ||
get_user(gparams.period_num, &user->period_num) ||
get_user(gparams.period_den, &user->period_den))
return -EFAULT;
return timer_set_gparams(&gparams);
}
static int snd_timer_user_info_compat(struct file *file,
struct snd_timer_info32 __user *_info)
{
struct snd_timer_user *tu;
struct snd_timer_info32 info;
struct snd_timer *t;
tu = file->private_data;
if (snd_BUG_ON(!tu->timeri))
return -ENXIO;
t = tu->timeri->timer;
if (snd_BUG_ON(!t))
return -ENXIO;
memset(&info, 0, sizeof(info));
info.card = t->card ? t->card->number : -1;
if (t->hw.flags & SNDRV_TIMER_HW_SLAVE)
info.flags |= SNDRV_TIMER_FLG_SLAVE;
strlcpy(info.id, t->id, sizeof(info.id));
strlcpy(info.name, t->name, sizeof(info.name));
info.resolution = t->hw.resolution;
if (copy_to_user(_info, &info, sizeof(*_info)))
return -EFAULT;
return 0;
}
struct snd_timer_status32 {
struct compat_timespec tstamp;
u32 resolution;
u32 lost;
u32 overrun;
u32 queue;
unsigned char reserved[64];
};
static int snd_timer_user_status_compat(struct file *file,
struct snd_timer_status32 __user *_status)
{
struct snd_timer_user *tu;
struct snd_timer_status32 status;
tu = file->private_data;
if (snd_BUG_ON(!tu->timeri))
return -ENXIO;
memset(&status, 0, sizeof(status));
status.tstamp.tv_sec = tu->tstamp.tv_sec;
status.tstamp.tv_nsec = tu->tstamp.tv_nsec;
status.resolution = snd_timer_resolution(tu->timeri);
status.lost = tu->timeri->lost;
status.overrun = tu->overrun;
spin_lock_irq(&tu->qlock);
status.queue = tu->qused;
spin_unlock_irq(&tu->qlock);
if (copy_to_user(_status, &status, sizeof(status)))
return -EFAULT;
return 0;
}
#ifdef CONFIG_X86_X32
/* X32 ABI has the same struct as x86-64 */
#define snd_timer_user_status_x32(file, s) \
snd_timer_user_status(file, s)
#endif /* CONFIG_X86_X32 */
/*
*/
enum {
SNDRV_TIMER_IOCTL_GPARAMS32 = _IOW('T', 0x04, struct snd_timer_gparams32),
SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32),
SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32),
#ifdef CONFIG_X86_X32
SNDRV_TIMER_IOCTL_STATUS_X32 = _IOW('T', 0x14, struct snd_timer_status),
#endif /* CONFIG_X86_X32 */
};
static long __snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd,
unsigned long arg)
{
void __user *argp = compat_ptr(arg);
switch (cmd) {
case SNDRV_TIMER_IOCTL_PVERSION:
case SNDRV_TIMER_IOCTL_TREAD:
case SNDRV_TIMER_IOCTL_GINFO:
case SNDRV_TIMER_IOCTL_GSTATUS:
case SNDRV_TIMER_IOCTL_SELECT:
case SNDRV_TIMER_IOCTL_PARAMS:
case SNDRV_TIMER_IOCTL_START:
case SNDRV_TIMER_IOCTL_START_OLD:
case SNDRV_TIMER_IOCTL_STOP:
case SNDRV_TIMER_IOCTL_STOP_OLD:
case SNDRV_TIMER_IOCTL_CONTINUE:
case SNDRV_TIMER_IOCTL_CONTINUE_OLD:
case SNDRV_TIMER_IOCTL_PAUSE:
case SNDRV_TIMER_IOCTL_PAUSE_OLD:
case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
return __snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
case SNDRV_TIMER_IOCTL_GPARAMS32:
return snd_timer_user_gparams_compat(file, argp);
case SNDRV_TIMER_IOCTL_INFO32:
return snd_timer_user_info_compat(file, argp);
case SNDRV_TIMER_IOCTL_STATUS32:
return snd_timer_user_status_compat(file, argp);
#ifdef CONFIG_X86_X32
case SNDRV_TIMER_IOCTL_STATUS_X32:
return snd_timer_user_status_x32(file, argp);
#endif /* CONFIG_X86_X32 */
}
return -ENOIOCTLCMD;
}
static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct snd_timer_user *tu = file->private_data;
long ret;
mutex_lock(&tu->ioctl_lock);
ret = __snd_timer_user_ioctl_compat(file, cmd, arg);
mutex_unlock(&tu->ioctl_lock);
return ret;
}
|
