Root/
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 | /* This file is included from hwdep.c */ |
22 | |
23 | #include <linux/compat.h> |
24 | |
25 | struct snd_hwdep_dsp_image32 { |
26 | u32 index; |
27 | unsigned char name[64]; |
28 | u32 image; /* pointer */ |
29 | u32 length; |
30 | u32 driver_data; |
31 | } /* don't set packed attribute here */; |
32 | |
33 | static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw, |
34 | struct snd_hwdep_dsp_image32 __user *src) |
35 | { |
36 | struct snd_hwdep_dsp_image __user *dst; |
37 | compat_caddr_t ptr; |
38 | u32 val; |
39 | |
40 | dst = compat_alloc_user_space(sizeof(*dst)); |
41 | |
42 | /* index and name */ |
43 | if (copy_in_user(dst, src, 4 + 64)) |
44 | return -EFAULT; |
45 | if (get_user(ptr, &src->image) || |
46 | put_user(compat_ptr(ptr), &dst->image)) |
47 | return -EFAULT; |
48 | if (get_user(val, &src->length) || |
49 | put_user(val, &dst->length)) |
50 | return -EFAULT; |
51 | if (get_user(val, &src->driver_data) || |
52 | put_user(val, &dst->driver_data)) |
53 | return -EFAULT; |
54 | |
55 | return snd_hwdep_dsp_load(hw, dst); |
56 | } |
57 | |
58 | enum { |
59 | SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32) |
60 | }; |
61 | |
62 | static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd, |
63 | unsigned long arg) |
64 | { |
65 | struct snd_hwdep *hw = file->private_data; |
66 | void __user *argp = compat_ptr(arg); |
67 | switch (cmd) { |
68 | case SNDRV_HWDEP_IOCTL_PVERSION: |
69 | case SNDRV_HWDEP_IOCTL_INFO: |
70 | case SNDRV_HWDEP_IOCTL_DSP_STATUS: |
71 | return snd_hwdep_ioctl(file, cmd, (unsigned long)argp); |
72 | case SNDRV_HWDEP_IOCTL_DSP_LOAD32: |
73 | return snd_hwdep_dsp_load_compat(hw, argp); |
74 | } |
75 | if (hw->ops.ioctl_compat) |
76 | return hw->ops.ioctl_compat(hw, file, cmd, arg); |
77 | return -ENOIOCTLCMD; |
78 | } |
79 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9