11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * 32bit -> 64bit ioctl wrapper for hwdep API 31da177e4SLinus Torvalds * Copyright (c) by Takashi Iwai <tiwai@suse.de> 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 61da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 71da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 81da177e4SLinus Torvalds * (at your option) any later version. 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, 111da177e4SLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 121da177e4SLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 131da177e4SLinus Torvalds * GNU General Public License for more details. 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 161da177e4SLinus Torvalds * along with this program; if not, write to the Free Software 171da177e4SLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds */ 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds /* This file is included from hwdep.c */ 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #include <linux/compat.h> 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds struct sndrv_hwdep_dsp_image32 { 261da177e4SLinus Torvalds u32 index; 271da177e4SLinus Torvalds unsigned char name[64]; 281da177e4SLinus Torvalds u32 image; /* pointer */ 291da177e4SLinus Torvalds u32 length; 301da177e4SLinus Torvalds u32 driver_data; 311da177e4SLinus Torvalds } /* don't set packed attribute here */; 321da177e4SLinus Torvalds 331da177e4SLinus Torvalds static int snd_hwdep_dsp_load_compat(snd_hwdep_t *hw, 341da177e4SLinus Torvalds struct sndrv_hwdep_dsp_image32 __user *src) 351da177e4SLinus Torvalds { 361da177e4SLinus Torvalds struct sndrv_hwdep_dsp_image *dst; 371da177e4SLinus Torvalds compat_caddr_t ptr; 381da177e4SLinus Torvalds u32 val; 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds dst = compat_alloc_user_space(sizeof(*dst)); 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds /* index and name */ 431da177e4SLinus Torvalds if (copy_in_user(dst, src, 4 + 64)) 441da177e4SLinus Torvalds return -EFAULT; 451da177e4SLinus Torvalds if (get_user(ptr, &src->image) || 461da177e4SLinus Torvalds put_user(compat_ptr(ptr), &dst->image)) 471da177e4SLinus Torvalds return -EFAULT; 481da177e4SLinus Torvalds if (get_user(val, &src->length) || 491da177e4SLinus Torvalds put_user(val, &dst->length)) 501da177e4SLinus Torvalds return -EFAULT; 511da177e4SLinus Torvalds if (get_user(val, &src->driver_data) || 521da177e4SLinus Torvalds put_user(val, &dst->driver_data)) 531da177e4SLinus Torvalds return -EFAULT; 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds return snd_hwdep_dsp_load(hw, dst); 561da177e4SLinus Torvalds } 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds enum { 591da177e4SLinus Torvalds SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image32) 601da177e4SLinus Torvalds }; 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd, unsigned long arg) 631da177e4SLinus Torvalds { 641da177e4SLinus Torvalds snd_hwdep_t *hw = file->private_data; 651da177e4SLinus Torvalds void __user *argp = compat_ptr(arg); 661da177e4SLinus Torvalds switch (cmd) { 671da177e4SLinus Torvalds case SNDRV_HWDEP_IOCTL_PVERSION: 681da177e4SLinus Torvalds case SNDRV_HWDEP_IOCTL_INFO: 691da177e4SLinus Torvalds case SNDRV_HWDEP_IOCTL_DSP_STATUS: 701da177e4SLinus Torvalds return snd_hwdep_ioctl(file, cmd, (unsigned long)argp); 711da177e4SLinus Torvalds case SNDRV_HWDEP_IOCTL_DSP_LOAD32: 721da177e4SLinus Torvalds return snd_hwdep_dsp_load_compat(hw, argp); 731da177e4SLinus Torvalds } 741da177e4SLinus Torvalds if (hw->ops.ioctl_compat) 751da177e4SLinus Torvalds return hw->ops.ioctl_compat(hw, file, cmd, arg); 761da177e4SLinus Torvalds return -ENOIOCTLCMD; 771da177e4SLinus Torvalds } 78