[ALSA] Remove xxx_t typedefs: Timer
[linux-2.6.git] / sound / core / timer_compat.c
1 /*
2  *   32bit -> 64bit ioctl wrapper for timer API
3  *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
4  *
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.
9  *
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.
14  *
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
18  *
19  */
20
21 /* This file included from timer.c */
22
23 #include <linux/compat.h>
24
25 struct snd_timer_info32 {
26         u32 flags;
27         s32 card;
28         unsigned char id[64];
29         unsigned char name[80];
30         u32 reserved0;
31         u32 resolution;
32         unsigned char reserved[64];
33 };
34
35 static int snd_timer_user_info_compat(struct file *file,
36                                       struct snd_timer_info32 __user *_info)
37 {
38         struct snd_timer_user *tu;
39         struct snd_timer_info32 info;
40         struct snd_timer *t;
41
42         tu = file->private_data;
43         snd_assert(tu->timeri != NULL, return -ENXIO);
44         t = tu->timeri->timer;
45         snd_assert(t != NULL, return -ENXIO);
46         memset(&info, 0, sizeof(info));
47         info.card = t->card ? t->card->number : -1;
48         if (t->hw.flags & SNDRV_TIMER_HW_SLAVE)
49                 info.flags |= SNDRV_TIMER_FLG_SLAVE;
50         strlcpy(info.id, t->id, sizeof(info.id));
51         strlcpy(info.name, t->name, sizeof(info.name));
52         info.resolution = t->hw.resolution;
53         if (copy_to_user(_info, &info, sizeof(*_info)))
54                 return -EFAULT;
55         return 0;
56 }
57
58 struct snd_timer_status32 {
59         struct compat_timespec tstamp;
60         u32 resolution;
61         u32 lost;
62         u32 overrun;
63         u32 queue;
64         unsigned char reserved[64];
65 };
66
67 static int snd_timer_user_status_compat(struct file *file,
68                                         struct snd_timer_status32 __user *_status)
69 {
70         struct snd_timer_user *tu;
71         struct snd_timer_status status;
72         
73         tu = file->private_data;
74         snd_assert(tu->timeri != NULL, return -ENXIO);
75         memset(&status, 0, sizeof(status));
76         status.tstamp = tu->tstamp;
77         status.resolution = snd_timer_resolution(tu->timeri);
78         status.lost = tu->timeri->lost;
79         status.overrun = tu->overrun;
80         spin_lock_irq(&tu->qlock);
81         status.queue = tu->qused;
82         spin_unlock_irq(&tu->qlock);
83         if (copy_to_user(_status, &status, sizeof(status)))
84                 return -EFAULT;
85         return 0;
86 }
87
88 /*
89  */
90
91 enum {
92         SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32),
93         SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32),
94 };
95
96 static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
97 {
98         void __user *argp = compat_ptr(arg);
99
100         switch (cmd) {
101         case SNDRV_TIMER_IOCTL_PVERSION:
102         case SNDRV_TIMER_IOCTL_TREAD:
103         case SNDRV_TIMER_IOCTL_GINFO:
104         case SNDRV_TIMER_IOCTL_GPARAMS:
105         case SNDRV_TIMER_IOCTL_GSTATUS:
106         case SNDRV_TIMER_IOCTL_SELECT:
107         case SNDRV_TIMER_IOCTL_PARAMS:
108         case SNDRV_TIMER_IOCTL_START:
109         case SNDRV_TIMER_IOCTL_START_OLD:
110         case SNDRV_TIMER_IOCTL_STOP:
111         case SNDRV_TIMER_IOCTL_STOP_OLD:
112         case SNDRV_TIMER_IOCTL_CONTINUE:
113         case SNDRV_TIMER_IOCTL_CONTINUE_OLD:
114         case SNDRV_TIMER_IOCTL_PAUSE:
115         case SNDRV_TIMER_IOCTL_PAUSE_OLD:
116         case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
117                 return snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
118         case SNDRV_TIMER_IOCTL_INFO32:
119                 return snd_timer_user_info_compat(file, argp);
120         case SNDRV_TIMER_IOCTL_STATUS32:
121                 return snd_timer_user_status_compat(file, argp);
122         }
123         return -ENOIOCTLCMD;
124 }