Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * 32bit -> 64bit ioctl wrapper for hwdep API | |
4 | * Copyright (c) by Takashi Iwai <tiwai@suse.de> | |
1da177e4 LT |
5 | */ |
6 | ||
7 | /* This file is included from hwdep.c */ | |
8 | ||
9 | #include <linux/compat.h> | |
10 | ||
d9a98de2 | 11 | struct snd_hwdep_dsp_image32 { |
1da177e4 LT |
12 | u32 index; |
13 | unsigned char name[64]; | |
14 | u32 image; /* pointer */ | |
15 | u32 length; | |
16 | u32 driver_data; | |
17 | } /* don't set packed attribute here */; | |
18 | ||
d9a98de2 TI |
19 | static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw, |
20 | struct snd_hwdep_dsp_image32 __user *src) | |
1da177e4 | 21 | { |
cb04e6b6 | 22 | struct snd_hwdep_dsp_image __user *dst; |
1da177e4 LT |
23 | compat_caddr_t ptr; |
24 | u32 val; | |
25 | ||
26 | dst = compat_alloc_user_space(sizeof(*dst)); | |
27 | ||
28 | /* index and name */ | |
29 | if (copy_in_user(dst, src, 4 + 64)) | |
30 | return -EFAULT; | |
31 | if (get_user(ptr, &src->image) || | |
32 | put_user(compat_ptr(ptr), &dst->image)) | |
33 | return -EFAULT; | |
34 | if (get_user(val, &src->length) || | |
35 | put_user(val, &dst->length)) | |
36 | return -EFAULT; | |
37 | if (get_user(val, &src->driver_data) || | |
38 | put_user(val, &dst->driver_data)) | |
39 | return -EFAULT; | |
40 | ||
41 | return snd_hwdep_dsp_load(hw, dst); | |
42 | } | |
43 | ||
44 | enum { | |
d9a98de2 | 45 | SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32) |
1da177e4 LT |
46 | }; |
47 | ||
d9a98de2 TI |
48 | static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd, |
49 | unsigned long arg) | |
1da177e4 | 50 | { |
d9a98de2 | 51 | struct snd_hwdep *hw = file->private_data; |
1da177e4 LT |
52 | void __user *argp = compat_ptr(arg); |
53 | switch (cmd) { | |
54 | case SNDRV_HWDEP_IOCTL_PVERSION: | |
55 | case SNDRV_HWDEP_IOCTL_INFO: | |
56 | case SNDRV_HWDEP_IOCTL_DSP_STATUS: | |
57 | return snd_hwdep_ioctl(file, cmd, (unsigned long)argp); | |
58 | case SNDRV_HWDEP_IOCTL_DSP_LOAD32: | |
59 | return snd_hwdep_dsp_load_compat(hw, argp); | |
60 | } | |
61 | if (hw->ops.ioctl_compat) | |
62 | return hw->ops.ioctl_compat(hw, file, cmd, arg); | |
63 | return -ENOIOCTLCMD; | |
64 | } |