11a59d1b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
21da177e4SLinus Torvalds /*
31da177e4SLinus Torvalds * 32bit -> 64bit ioctl wrapper for hwdep API
41da177e4SLinus Torvalds * Copyright (c) by Takashi Iwai <tiwai@suse.de>
51da177e4SLinus Torvalds */
61da177e4SLinus Torvalds
71da177e4SLinus Torvalds /* This file is included from hwdep.c */
81da177e4SLinus Torvalds
91da177e4SLinus Torvalds #include <linux/compat.h>
101da177e4SLinus Torvalds
11d9a98de2STakashi Iwai struct snd_hwdep_dsp_image32 {
121da177e4SLinus Torvalds u32 index;
131da177e4SLinus Torvalds unsigned char name[64];
141da177e4SLinus Torvalds u32 image; /* pointer */
151da177e4SLinus Torvalds u32 length;
161da177e4SLinus Torvalds u32 driver_data;
171da177e4SLinus Torvalds } /* don't set packed attribute here */;
181da177e4SLinus Torvalds
snd_hwdep_dsp_load_compat(struct snd_hwdep * hw,struct snd_hwdep_dsp_image32 __user * src)19d9a98de2STakashi Iwai static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw,
20d9a98de2STakashi Iwai struct snd_hwdep_dsp_image32 __user *src)
211da177e4SLinus Torvalds {
2218d122c0SArnd Bergmann struct snd_hwdep_dsp_image info = {};
231da177e4SLinus Torvalds compat_caddr_t ptr;
241da177e4SLinus Torvalds
2518d122c0SArnd Bergmann if (copy_from_user(&info, src, 4 + 64) ||
2618d122c0SArnd Bergmann get_user(ptr, &src->image) ||
2718d122c0SArnd Bergmann get_user(info.length, &src->length) ||
2818d122c0SArnd Bergmann get_user(info.driver_data, &src->driver_data))
2918d122c0SArnd Bergmann return -EFAULT;
3018d122c0SArnd Bergmann info.image = compat_ptr(ptr);
311da177e4SLinus Torvalds
3218d122c0SArnd Bergmann return snd_hwdep_dsp_load(hw, &info);
331da177e4SLinus Torvalds }
341da177e4SLinus Torvalds
351da177e4SLinus Torvalds enum {
36d9a98de2STakashi Iwai SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32)
371da177e4SLinus Torvalds };
381da177e4SLinus Torvalds
snd_hwdep_ioctl_compat(struct file * file,unsigned int cmd,unsigned long arg)39d9a98de2STakashi Iwai static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd,
40d9a98de2STakashi Iwai unsigned long arg)
411da177e4SLinus Torvalds {
42d9a98de2STakashi Iwai struct snd_hwdep *hw = file->private_data;
431da177e4SLinus Torvalds void __user *argp = compat_ptr(arg);
441da177e4SLinus Torvalds switch (cmd) {
451da177e4SLinus Torvalds case SNDRV_HWDEP_IOCTL_PVERSION:
461da177e4SLinus Torvalds case SNDRV_HWDEP_IOCTL_INFO:
471da177e4SLinus Torvalds case SNDRV_HWDEP_IOCTL_DSP_STATUS:
481da177e4SLinus Torvalds return snd_hwdep_ioctl(file, cmd, (unsigned long)argp);
491da177e4SLinus Torvalds case SNDRV_HWDEP_IOCTL_DSP_LOAD32:
501da177e4SLinus Torvalds return snd_hwdep_dsp_load_compat(hw, argp);
511da177e4SLinus Torvalds }
521da177e4SLinus Torvalds if (hw->ops.ioctl_compat)
531da177e4SLinus Torvalds return hw->ops.ioctl_compat(hw, file, cmd, arg);
541da177e4SLinus Torvalds return -ENOIOCTLCMD;
551da177e4SLinus Torvalds }
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