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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 | if (snd_BUG_ON(!tu->timeri)) |
44 | return -ENXIO; |
45 | t = tu->timeri->timer; |
46 | if (snd_BUG_ON(!t)) |
47 | return -ENXIO; |
48 | memset(&info, 0, sizeof(info)); |
49 | info.card = t->card ? t->card->number : -1; |
50 | if (t->hw.flags & SNDRV_TIMER_HW_SLAVE) |
51 | info.flags |= SNDRV_TIMER_FLG_SLAVE; |
52 | strlcpy(info.id, t->id, sizeof(info.id)); |
53 | strlcpy(info.name, t->name, sizeof(info.name)); |
54 | info.resolution = t->hw.resolution; |
55 | if (copy_to_user(_info, &info, sizeof(*_info))) |
56 | return -EFAULT; |
57 | return 0; |
58 | } |
59 | |
60 | struct snd_timer_status32 { |
61 | struct compat_timespec tstamp; |
62 | u32 resolution; |
63 | u32 lost; |
64 | u32 overrun; |
65 | u32 queue; |
66 | unsigned char reserved[64]; |
67 | }; |
68 | |
69 | static int snd_timer_user_status_compat(struct file *file, |
70 | struct snd_timer_status32 __user *_status) |
71 | { |
72 | struct snd_timer_user *tu; |
73 | struct snd_timer_status status; |
74 | |
75 | tu = file->private_data; |
76 | if (snd_BUG_ON(!tu->timeri)) |
77 | return -ENXIO; |
78 | memset(&status, 0, sizeof(status)); |
79 | status.tstamp = tu->tstamp; |
80 | status.resolution = snd_timer_resolution(tu->timeri); |
81 | status.lost = tu->timeri->lost; |
82 | status.overrun = tu->overrun; |
83 | spin_lock_irq(&tu->qlock); |
84 | status.queue = tu->qused; |
85 | spin_unlock_irq(&tu->qlock); |
86 | if (copy_to_user(_status, &status, sizeof(status))) |
87 | return -EFAULT; |
88 | return 0; |
89 | } |
90 | |
91 | /* |
92 | */ |
93 | |
94 | enum { |
95 | SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32), |
96 | SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32), |
97 | }; |
98 | |
99 | static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) |
100 | { |
101 | void __user *argp = compat_ptr(arg); |
102 | |
103 | switch (cmd) { |
104 | case SNDRV_TIMER_IOCTL_PVERSION: |
105 | case SNDRV_TIMER_IOCTL_TREAD: |
106 | case SNDRV_TIMER_IOCTL_GINFO: |
107 | case SNDRV_TIMER_IOCTL_GPARAMS: |
108 | case SNDRV_TIMER_IOCTL_GSTATUS: |
109 | case SNDRV_TIMER_IOCTL_SELECT: |
110 | case SNDRV_TIMER_IOCTL_PARAMS: |
111 | case SNDRV_TIMER_IOCTL_START: |
112 | case SNDRV_TIMER_IOCTL_START_OLD: |
113 | case SNDRV_TIMER_IOCTL_STOP: |
114 | case SNDRV_TIMER_IOCTL_STOP_OLD: |
115 | case SNDRV_TIMER_IOCTL_CONTINUE: |
116 | case SNDRV_TIMER_IOCTL_CONTINUE_OLD: |
117 | case SNDRV_TIMER_IOCTL_PAUSE: |
118 | case SNDRV_TIMER_IOCTL_PAUSE_OLD: |
119 | case SNDRV_TIMER_IOCTL_NEXT_DEVICE: |
120 | return snd_timer_user_ioctl(file, cmd, (unsigned long)argp); |
121 | case SNDRV_TIMER_IOCTL_INFO32: |
122 | return snd_timer_user_info_compat(file, argp); |
123 | case SNDRV_TIMER_IOCTL_STATUS32: |
124 | return snd_timer_user_status_compat(file, argp); |
125 | } |
126 | return -ENOIOCTLCMD; |
127 | } |
128 |
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Tags:
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