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
25struct 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
33static 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
58enum {
59	SNDRV_HWDEP_IOCTL_DSP_LOAD32   = _IOW('H', 0x03, struct snd_hwdep_dsp_image32)
60};
61
62static 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}

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 *   32bit -> 64bit ioctl wrapper for hwdep API
 4 *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 5 */
 6
 7/* This file is included from hwdep.c */
 8
 9#include <linux/compat.h>
10
11struct snd_hwdep_dsp_image32 {
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
19static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw,
20				     struct snd_hwdep_dsp_image32 __user *src)
21{
22	struct snd_hwdep_dsp_image info = {};
23	compat_caddr_t ptr;
 
24
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))
 
 
 
 
 
 
 
 
 
29		return -EFAULT;
30	info.image = compat_ptr(ptr);
31
32	return snd_hwdep_dsp_load(hw, &info);
33}
34
35enum {
36	SNDRV_HWDEP_IOCTL_DSP_LOAD32   = _IOW('H', 0x03, struct snd_hwdep_dsp_image32)
37};
38
39static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd,
40				   unsigned long arg)
41{
42	struct snd_hwdep *hw = file->private_data;
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}