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 | { |
18d122c0 | 22 | struct snd_hwdep_dsp_image info = {}; |
1da177e4 | 23 | compat_caddr_t ptr; |
1da177e4 | 24 | |
18d122c0 AB |
25 | if (copy_from_user(&info, src, 4 + 64) || |
26 | get_user(ptr, &src->image) || | |
27 | get_user(info.length, &src->length) || | |
28 | get_user(info.driver_data, &src->driver_data)) | |
1da177e4 | 29 | return -EFAULT; |
18d122c0 | 30 | info.image = compat_ptr(ptr); |
1da177e4 | 31 | |
18d122c0 | 32 | return snd_hwdep_dsp_load(hw, &info); |
1da177e4 LT |
33 | } |
34 | ||
35 | enum { | |
d9a98de2 | 36 | SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32) |
1da177e4 LT |
37 | }; |
38 | ||
d9a98de2 TI |
39 | static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd, |
40 | unsigned long arg) | |
1da177e4 | 41 | { |
d9a98de2 | 42 | struct snd_hwdep *hw = file->private_data; |
1da177e4 LT |
43 | void __user *argp = compat_ptr(arg); |
44 | switch (cmd) { | |
45 | case SNDRV_HWDEP_IOCTL_PVERSION: | |
46 | case SNDRV_HWDEP_IOCTL_INFO: | |
47 | case SNDRV_HWDEP_IOCTL_DSP_STATUS: | |
48 | return snd_hwdep_ioctl(file, cmd, (unsigned long)argp); | |
49 | case SNDRV_HWDEP_IOCTL_DSP_LOAD32: | |
50 | return snd_hwdep_dsp_load_compat(hw, argp); | |
51 | } | |
52 | if (hw->ops.ioctl_compat) | |
53 | return hw->ops.ioctl_compat(hw, file, cmd, arg); | |
54 | return -ENOIOCTLCMD; | |
55 | } |