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}

 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}