mirror of https://gitee.com/openkylin/linux.git
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
|
|
* 32bit -> 64bit ioctl wrapper for hwdep API
|
|
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
/* This file is included from hwdep.c */
|
|
|
|
#include <linux/compat.h>
|
|
|
|
struct sndrv_hwdep_dsp_image32 {
|
|
u32 index;
|
|
unsigned char name[64];
|
|
u32 image; /* pointer */
|
|
u32 length;
|
|
u32 driver_data;
|
|
} /* don't set packed attribute here */;
|
|
|
|
static int snd_hwdep_dsp_load_compat(snd_hwdep_t *hw,
|
|
struct sndrv_hwdep_dsp_image32 __user *src)
|
|
{
|
|
struct sndrv_hwdep_dsp_image *dst;
|
|
compat_caddr_t ptr;
|
|
u32 val;
|
|
|
|
dst = compat_alloc_user_space(sizeof(*dst));
|
|
|
|
/* index and name */
|
|
if (copy_in_user(dst, src, 4 + 64))
|
|
return -EFAULT;
|
|
if (get_user(ptr, &src->image) ||
|
|
put_user(compat_ptr(ptr), &dst->image))
|
|
return -EFAULT;
|
|
if (get_user(val, &src->length) ||
|
|
put_user(val, &dst->length))
|
|
return -EFAULT;
|
|
if (get_user(val, &src->driver_data) ||
|
|
put_user(val, &dst->driver_data))
|
|
return -EFAULT;
|
|
|
|
return snd_hwdep_dsp_load(hw, dst);
|
|
}
|
|
|
|
enum {
|
|
SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image32)
|
|
};
|
|
|
|
static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
snd_hwdep_t *hw = file->private_data;
|
|
void __user *argp = compat_ptr(arg);
|
|
switch (cmd) {
|
|
case SNDRV_HWDEP_IOCTL_PVERSION:
|
|
case SNDRV_HWDEP_IOCTL_INFO:
|
|
case SNDRV_HWDEP_IOCTL_DSP_STATUS:
|
|
return snd_hwdep_ioctl(file, cmd, (unsigned long)argp);
|
|
case SNDRV_HWDEP_IOCTL_DSP_LOAD32:
|
|
return snd_hwdep_dsp_load_compat(hw, argp);
|
|
}
|
|
if (hw->ops.ioctl_compat)
|
|
return hw->ops.ioctl_compat(hw, file, cmd, arg);
|
|
return -ENOIOCTLCMD;
|
|
}
|