1 /*
2 * 32bit -> 64bit ioctl wrapper for hwdep 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 #include <sound/driver.h>
22 #include <linux/time.h>
23 #include <linux/fs.h>
24 #include <sound/core.h>
25 #include <sound/hwdep.h>
26 #include <asm/uaccess.h>
27 #include "ioctl32.h"
28
29 struct sndrv_hwdep_dsp_image32 {
30 u32 index;
31 unsigned char name[64];
32 u32 image; /* pointer */
33 u32 length;
34 u32 driver_data;
35 } /* don't set packed attribute here */;
36
37 static inline int _snd_ioctl32_hwdep_dsp_image(unsigned int fd, unsigned int cmd, unsigned long arg, struct file *file, unsigned int native_ctl)
38 {
39 struct sndrv_hwdep_dsp_image __user *data, *dst;
40 struct sndrv_hwdep_dsp_image32 __user *data32, *src;
41 compat_caddr_t ptr;
42
43 data32 = compat_ptr(arg);
44 data = compat_alloc_user_space(sizeof(*data));
45
46 /* index and name */
47 if (copy_in_user(data, data32, 4 + 64))
48 return -EFAULT;
49 if (__get_user(ptr, &data32->image) ||
50 __put_user(compat_ptr(ptr), &data->image))
51 return -EFAULT;
52 src = data32;
53 dst = data;
54 COPY_CVT(length);
55 COPY_CVT(driver_data);
56 return file->f_op->ioctl(file->f_dentry->d_inode, file, native_ctl, (unsigned long)data);
57 }
58
59 DEFINE_ALSA_IOCTL_ENTRY(hwdep_dsp_image, hwdep_dsp_image, SNDRV_HWDEP_IOCTL_DSP_LOAD);
60
61 #define AP(x) snd_ioctl32_##x
62
63 enum {
64 SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image32)
65 };
66
67 struct ioctl32_mapper hwdep_mappers[] = {
68 MAP_COMPAT(SNDRV_HWDEP_IOCTL_PVERSION),
69 MAP_COMPAT(SNDRV_HWDEP_IOCTL_INFO),
70 MAP_COMPAT(SNDRV_HWDEP_IOCTL_DSP_STATUS),
71 { SNDRV_HWDEP_IOCTL_DSP_LOAD32, AP(hwdep_dsp_image) },
72 { 0 },
73 };
74
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