1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * 32bit -> 64bit ioctl wrapper for hwdep API
7 /* This file is included from hwdep.c */
9 #include <linux/compat.h>
11 struct snd_hwdep_dsp_image32 {
13 unsigned char name[64];
14 u32 image; /* pointer */
17 } /* don't set packed attribute here */;
19 static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw,
20 struct snd_hwdep_dsp_image32 __user *src)
22 struct snd_hwdep_dsp_image info = {};
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))
30 info.image = compat_ptr(ptr);
32 return snd_hwdep_dsp_load(hw, &info);
36 SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32)
39 static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd,
42 struct snd_hwdep *hw = file->private_data;
43 void __user *argp = compat_ptr(arg);
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);
52 if (hw->ops.ioctl_compat)
53 return hw->ops.ioctl_compat(hw, file, cmd, arg);