sound/core/pcm_compat.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   32bit -> 64bit ioctl wrapper for PCM API
   4  *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
   5  */
   6
   7 /* This file included from pcm_native.c */
   8
   9 #include <linux/compat.h>
  10 #include <linux/slab.h>
  11
  12 static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream,
  13                                       s32 __user *src)
  14 {
  15         snd_pcm_sframes_t delay;
  16         int err;
  17
  18         err = snd_pcm_delay(substream, &delay);
  19         if (err)
  20                 return err;
  21         if (put_user(delay, src))
  22                 return -EFAULT;
  23         return 0;
  24 }
  25
  26 static int snd_pcm_ioctl_rewind_compat(struct snd_pcm_substream *substream,
  27                                        u32 __user *src)
  28 {
  29         snd_pcm_uframes_t frames;
  30         int err;
  31
  32         if (get_user(frames, src))
  33                 return -EFAULT;
  34         err = snd_pcm_rewind(substream, frames);
  35         if (put_user(err, src))
  36                 return -EFAULT;
  37         return err < 0 ? err : 0;
  38 }
  39
  40 static int snd_pcm_ioctl_forward_compat(struct snd_pcm_substream *substream,
  41                                        u32 __user *src)
  42 {
  43         snd_pcm_uframes_t frames;
  44         int err;
  45
  46         if (get_user(frames, src))
  47                 return -EFAULT;
  48         err = snd_pcm_forward(substream, frames);
  49         if (put_user(err, src))
  50                 return -EFAULT;
  51         return err < 0 ? err : 0;
  52 }
  53
  54 struct snd_pcm_hw_params32 {
  55         u32 flags;
  56         struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; /* this must be identical */
  57         struct snd_mask mres[5];        /* reserved masks */
  58         struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
  59         struct snd_interval ires[9];    /* reserved intervals */
  60         u32 rmask;
  61         u32 cmask;
  62         u32 info;
  63         u32 msbits;
  64         u32 rate_num;
  65         u32 rate_den;
  66         u32 fifo_size;
  67         unsigned char reserved[64];
  68 };
  69
  70 struct snd_pcm_sw_params32 {
  71         s32 tstamp_mode;
  72         u32 period_step;
  73         u32 sleep_min;
  74         u32 avail_min;
  75         u32 xfer_align;
  76         u32 start_threshold;
  77         u32 stop_threshold;
  78         u32 silence_threshold;
  79         u32 silence_size;
  80         u32 boundary;
  81         u32 proto;
  82         u32 tstamp_type;
  83         unsigned char reserved[56];
  84 };
  85
  86 static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
  87                                           struct snd_pcm_sw_params32 __user *src)
  88 {
  89         struct snd_pcm_sw_params params;
  90         snd_pcm_uframes_t boundary;
  91         int err;
  92
  93         memset(&params, 0, sizeof(params));
  94         if (get_user(params.tstamp_mode, &src->tstamp_mode) ||
  95             get_user(params.period_step, &src->period_step) ||
  96             get_user(params.sleep_min, &src->sleep_min) ||
  97             get_user(params.avail_min, &src->avail_min) ||
  98             get_user(params.xfer_align, &src->xfer_align) ||
  99             get_user(params.start_threshold, &src->start_threshold) ||
 100             get_user(params.stop_threshold, &src->stop_threshold) ||
 101             get_user(params.silence_threshold, &src->silence_threshold) ||
 102             get_user(params.silence_size, &src->silence_size) ||
 103             get_user(params.tstamp_type, &src->tstamp_type) ||
 104             get_user(params.proto, &src->proto))
 105                 return -EFAULT;
 106         /*
 107          * Check silent_size parameter.  Since we have 64bit boundary,
 108          * silence_size must be compared with the 32bit boundary.
 109          */
 110         boundary = recalculate_boundary(substream->runtime);
 111         if (boundary && params.silence_size >= boundary)
 112                 params.silence_size = substream->runtime->boundary;
 113         err = snd_pcm_sw_params(substream, &params);
 114         if (err < 0)
 115                 return err;
 116         if (boundary && put_user(boundary, &src->boundary))
 117                 return -EFAULT;
 118         return err;
 119 }
 120
 121 struct snd_pcm_channel_info32 {
 122         u32 channel;
 123         u32 offset;
 124         u32 first;
 125         u32 step;
 126 };
 127
 128 static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream,
 129                                              struct snd_pcm_channel_info32 __user *src)
 130 {
 131         struct snd_pcm_channel_info info;
 132         int err;
 133
 134         if (get_user(info.channel, &src->channel) ||
 135             get_user(info.offset, &src->offset) ||
 136             get_user(info.first, &src->first) ||
 137             get_user(info.step, &src->step))
 138                 return -EFAULT;
 139         err = snd_pcm_channel_info(substream, &info);
 140         if (err < 0)
 141                 return err;
 142         if (put_user(info.channel, &src->channel) ||
 143             put_user(info.offset, &src->offset) ||
 144             put_user(info.first, &src->first) ||
 145             put_user(info.step, &src->step))
 146                 return -EFAULT;
 147         return err;
 148 }
 149
 150 #ifdef CONFIG_X86_X32
 151 /* X32 ABI has the same struct as x86-64 for snd_pcm_channel_info */
 152 static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream,
 153                                      struct snd_pcm_channel_info __user *src);
 154 #define snd_pcm_ioctl_channel_info_x32(s, p)    \
 155         snd_pcm_channel_info_user(s, p)
 156 #endif /* CONFIG_X86_X32 */
 157
 158 struct compat_snd_pcm_status64 {
 159         s32 state;
 160         u8 rsvd[4]; /* alignment */
 161         s64 trigger_tstamp_sec;
 162         s64 trigger_tstamp_nsec;
 163         s64 tstamp_sec;
 164         s64 tstamp_nsec;
 165         u32 appl_ptr;
 166         u32 hw_ptr;
 167         s32 delay;
 168         u32 avail;
 169         u32 avail_max;
 170         u32 overrange;
 171         s32 suspended_state;
 172         u32 audio_tstamp_data;
 173         s64 audio_tstamp_sec;
 174         s64 audio_tstamp_nsec;
 175         s64 driver_tstamp_sec;
 176         s64 driver_tstamp_nsec;
 177         u32 audio_tstamp_accuracy;
 178         unsigned char reserved[52-4*sizeof(s64)];
 179 } __packed;
 180
 181 #define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
 182
 183 static int snd_pcm_status_user_compat64(struct snd_pcm_substream *substream,
 184                                         struct compat_snd_pcm_status64 __user *src,
 185                                         bool ext)
 186 {
 187         struct snd_pcm_status64 status;
 188         struct compat_snd_pcm_status64 compat_status64;
 189         int err;
 190
 191         memset(&status, 0, sizeof(status));
 192         memset(&compat_status64, 0, sizeof(compat_status64));
 193         /*
 194          * with extension, parameters are read/write,
 195          * get audio_tstamp_data from user,
 196          * ignore rest of status structure
 197          */
 198         if (ext && get_user(status.audio_tstamp_data,
 199                                 (u32 __user *)(&src->audio_tstamp_data)))
 200                 return -EFAULT;
 201         err = snd_pcm_status64(substream, &status);
 202         if (err < 0)
 203                 return err;
 204
 205         if (clear_user(src, sizeof(*src)))
 206                 return -EFAULT;
 207
 208         compat_status64 = (struct compat_snd_pcm_status64) {
 209                 .state = status.state,
 210                 .trigger_tstamp_sec = status.trigger_tstamp_sec,
 211                 .trigger_tstamp_nsec = status.trigger_tstamp_nsec,
 212                 .tstamp_sec = status.tstamp_sec,
 213                 .tstamp_nsec = status.tstamp_nsec,
 214                 .appl_ptr = status.appl_ptr,
 215                 .hw_ptr = status.hw_ptr,
 216                 .delay = status.delay,
 217                 .avail = status.avail,
 218                 .avail_max = status.avail_max,
 219                 .overrange = status.overrange,
 220                 .suspended_state = status.suspended_state,
 221                 .audio_tstamp_data = status.audio_tstamp_data,
 222                 .audio_tstamp_sec = status.audio_tstamp_sec,
 223                 .audio_tstamp_nsec = status.audio_tstamp_nsec,
 224                 .driver_tstamp_sec = status.audio_tstamp_sec,
 225                 .driver_tstamp_nsec = status.audio_tstamp_nsec,
 226                 .audio_tstamp_accuracy = status.audio_tstamp_accuracy,
 227         };
 228
 229         if (copy_to_user(src, &compat_status64, sizeof(compat_status64)))
 230                 return -EFAULT;
 231
 232         return err;
 233 }
 234
 235 /* both for HW_PARAMS and HW_REFINE */
 236 static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
 237                                           int refine,
 238                                           struct snd_pcm_hw_params32 __user *data32)
 239 {
 240         struct snd_pcm_hw_params *data;
 241         struct snd_pcm_runtime *runtime;
 242         int err;
 243
 244         if (! (runtime = substream->runtime))
 245                 return -ENOTTY;
 246
 247         data = kmalloc(sizeof(*data), GFP_KERNEL);
 248         if (!data)
 249                 return -ENOMEM;
 250
 251         /* only fifo_size (RO from userspace) is different, so just copy all */
 252         if (copy_from_user(data, data32, sizeof(*data32))) {
 253                 err = -EFAULT;
 254                 goto error;
 255         }
 256
 257         if (refine)
 258                 err = snd_pcm_hw_refine(substream, data);
 259         else
 260                 err = snd_pcm_hw_params(substream, data);
 261         if (err < 0)
 262                 goto error;
 263         if (copy_to_user(data32, data, sizeof(*data32)) ||
 264             put_user(data->fifo_size, &data32->fifo_size)) {
 265                 err = -EFAULT;
 266                 goto error;
 267         }
 268
 269         if (! refine) {
 270                 unsigned int new_boundary = recalculate_boundary(runtime);
 271                 if (new_boundary)
 272                         runtime->boundary = new_boundary;
 273         }
 274  error:
 275         kfree(data);
 276         return err;
 277 }
 278
 279
 280 /*
 281  */
 282 struct snd_xferi32 {
 283         s32 result;
 284         u32 buf;
 285         u32 frames;
 286 };
 287
 288 static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream,
 289                                       int dir, struct snd_xferi32 __user *data32)
 290 {
 291         compat_caddr_t buf;
 292         u32 frames;
 293         int err;
 294
 295         if (! substream->runtime)
 296                 return -ENOTTY;
 297         if (substream->stream != dir)
 298                 return -EINVAL;
 299         if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
 300                 return -EBADFD;
 301
 302         if (get_user(buf, &data32->buf) ||
 303             get_user(frames, &data32->frames))
 304                 return -EFAULT;
 305
 306         if (dir == SNDRV_PCM_STREAM_PLAYBACK)
 307                 err = snd_pcm_lib_write(substream, compat_ptr(buf), frames);
 308         else
 309                 err = snd_pcm_lib_read(substream, compat_ptr(buf), frames);
 310         if (err < 0)
 311                 return err;
 312         /* copy the result */
 313         if (put_user(err, &data32->result))
 314                 return -EFAULT;
 315         return 0;
 316 }
 317
 318
 319 /* snd_xfern needs remapping of bufs */
 320 struct snd_xfern32 {
 321         s32 result;
 322         u32 bufs;  /* this is void **; */
 323         u32 frames;
 324 };
 325
 326 /*
 327  * xfern ioctl nees to copy (up to) 128 pointers on stack.
 328  * although we may pass the copied pointers through f_op->ioctl, but the ioctl
 329  * handler there expands again the same 128 pointers on stack, so it is better
 330  * to handle the function (calling pcm_readv/writev) directly in this handler.
 331  */
 332 static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
 333                                       int dir, struct snd_xfern32 __user *data32)
 334 {
 335         compat_caddr_t buf;
 336         compat_caddr_t __user *bufptr;
 337         u32 frames;
 338         void __user **bufs;
 339         int err, ch, i;
 340
 341         if (! substream->runtime)
 342                 return -ENOTTY;
 343         if (substream->stream != dir)
 344                 return -EINVAL;
 345         if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
 346                 return -EBADFD;
 347
 348         if ((ch = substream->runtime->channels) > 128)
 349                 return -EINVAL;
 350         if (get_user(buf, &data32->bufs) ||
 351             get_user(frames, &data32->frames))
 352                 return -EFAULT;
 353         bufptr = compat_ptr(buf);
 354         bufs = kmalloc_array(ch, sizeof(void __user *), GFP_KERNEL);
 355         if (bufs == NULL)
 356                 return -ENOMEM;
 357         for (i = 0; i < ch; i++) {
 358                 u32 ptr;
 359                 if (get_user(ptr, bufptr)) {
 360                         kfree(bufs);
 361                         return -EFAULT;
 362                 }
 363                 bufs[i] = compat_ptr(ptr);
 364                 bufptr++;
 365         }
 366         if (dir == SNDRV_PCM_STREAM_PLAYBACK)
 367                 err = snd_pcm_lib_writev(substream, bufs, frames);
 368         else
 369                 err = snd_pcm_lib_readv(substream, bufs, frames);
 370         if (err >= 0) {
 371                 if (put_user(err, &data32->result))
 372                         err = -EFAULT;
 373         }
 374         kfree(bufs);
 375         return err;
 376 }
 377
 378 #ifdef CONFIG_X86_X32
 379 /* X32 ABI has 64bit timespec and 64bit alignment */
 380 struct snd_pcm_mmap_status_x32 {
 381         s32 state;
 382         s32 pad1;
 383         u32 hw_ptr;
 384         u32 pad2; /* alignment */
 385         struct timespec tstamp;
 386         s32 suspended_state;
 387         s32 pad3;
 388         struct timespec audio_tstamp;
 389 } __packed;
 390
 391 struct snd_pcm_mmap_control_x32 {
 392         u32 appl_ptr;
 393         u32 avail_min;
 394 };
 395
 396 struct snd_pcm_sync_ptr_x32 {
 397         u32 flags;
 398         u32 rsvd; /* alignment */
 399         union {
 400                 struct snd_pcm_mmap_status_x32 status;
 401                 unsigned char reserved[64];
 402         } s;
 403         union {
 404                 struct snd_pcm_mmap_control_x32 control;
 405                 unsigned char reserved[64];
 406         } c;
 407 } __packed;
 408
 409 static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
 410                                       struct snd_pcm_sync_ptr_x32 __user *src)
 411 {
 412         struct snd_pcm_runtime *runtime = substream->runtime;
 413         volatile struct snd_pcm_mmap_status *status;
 414         volatile struct snd_pcm_mmap_control *control;
 415         u32 sflags;
 416         struct snd_pcm_mmap_control scontrol;
 417         struct snd_pcm_mmap_status sstatus;
 418         snd_pcm_uframes_t boundary;
 419         int err;
 420
 421         if (snd_BUG_ON(!runtime))
 422                 return -EINVAL;
 423
 424         if (get_user(sflags, &src->flags) ||
 425             get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
 426             get_user(scontrol.avail_min, &src->c.control.avail_min))
 427                 return -EFAULT;
 428         if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
 429                 err = snd_pcm_hwsync(substream);
 430                 if (err < 0)
 431                         return err;
 432         }
 433         status = runtime->status;
 434         control = runtime->control;
 435         boundary = recalculate_boundary(runtime);
 436         if (!boundary)
 437                 boundary = 0x7fffffff;
 438         snd_pcm_stream_lock_irq(substream);
 439         /* FIXME: we should consider the boundary for the sync from app */
 440         if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
 441                 control->appl_ptr = scontrol.appl_ptr;
 442         else
 443                 scontrol.appl_ptr = control->appl_ptr % boundary;
 444         if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
 445                 control->avail_min = scontrol.avail_min;
 446         else
 447                 scontrol.avail_min = control->avail_min;
 448         sstatus.state = status->state;
 449         sstatus.hw_ptr = status->hw_ptr % boundary;
 450         sstatus.tstamp = status->tstamp;
 451         sstatus.suspended_state = status->suspended_state;
 452         sstatus.audio_tstamp = status->audio_tstamp;
 453         snd_pcm_stream_unlock_irq(substream);
 454         if (put_user(sstatus.state, &src->s.status.state) ||
 455             put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
 456             put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
 457             put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
 458             put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) ||
 459             put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
 460             put_user(scontrol.avail_min, &src->c.control.avail_min))
 461                 return -EFAULT;
 462
 463         return 0;
 464 }
 465 #endif /* CONFIG_X86_X32 */
 466
 467 /*
 468  */
 469 enum {
 470         SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
 471         SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
 472         SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
 473         SNDRV_PCM_IOCTL_STATUS_COMPAT32 = _IOR('A', 0x20, struct snd_pcm_status32),
 474         SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
 475         SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
 476         SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
 477         SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
 478         SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32),
 479         SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32),
 480         SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
 481         SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
 482         SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
 483         SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
 484         SNDRV_PCM_IOCTL_STATUS_COMPAT64 = _IOR('A', 0x20, struct compat_snd_pcm_status64),
 485         SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64 = _IOWR('A', 0x24, struct compat_snd_pcm_status64),
 486 #ifdef CONFIG_X86_X32
 487         SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
 488         SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
 489 #endif /* CONFIG_X86_X32 */
 490 };
 491
 492 static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
 493 {
 494         struct snd_pcm_file *pcm_file;
 495         struct snd_pcm_substream *substream;
 496         void __user *argp = compat_ptr(arg);
 497
 498         pcm_file = file->private_data;
 499         if (! pcm_file)
 500                 return -ENOTTY;
 501         substream = pcm_file->substream;
 502         if (! substream)
 503                 return -ENOTTY;
 504
 505         /*
 506          * When PCM is used on 32bit mode, we need to disable
 507          * mmap of PCM status/control records because of the size
 508          * incompatibility.
 509          */
 510         pcm_file->no_compat_mmap = 1;
 511
 512         switch (cmd) {
 513         case SNDRV_PCM_IOCTL_PVERSION:
 514         case SNDRV_PCM_IOCTL_INFO:
 515         case SNDRV_PCM_IOCTL_TSTAMP:
 516         case SNDRV_PCM_IOCTL_TTSTAMP:
 517         case SNDRV_PCM_IOCTL_USER_PVERSION:
 518         case SNDRV_PCM_IOCTL_HWSYNC:
 519         case SNDRV_PCM_IOCTL_PREPARE:
 520         case SNDRV_PCM_IOCTL_RESET:
 521         case SNDRV_PCM_IOCTL_START:
 522         case SNDRV_PCM_IOCTL_DROP:
 523         case SNDRV_PCM_IOCTL_DRAIN:
 524         case SNDRV_PCM_IOCTL_PAUSE:
 525         case SNDRV_PCM_IOCTL_HW_FREE:
 526         case SNDRV_PCM_IOCTL_RESUME:
 527         case SNDRV_PCM_IOCTL_XRUN:
 528         case SNDRV_PCM_IOCTL_LINK:
 529         case SNDRV_PCM_IOCTL_UNLINK:
 530                 return snd_pcm_common_ioctl(file, substream, cmd, argp);
 531         case SNDRV_PCM_IOCTL_HW_REFINE32:
 532                 return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
 533         case SNDRV_PCM_IOCTL_HW_PARAMS32:
 534                 return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
 535         case SNDRV_PCM_IOCTL_SW_PARAMS32:
 536                 return snd_pcm_ioctl_sw_params_compat(substream, argp);
 537         case SNDRV_PCM_IOCTL_STATUS_COMPAT32:
 538                 return snd_pcm_status_user32(substream, argp, false);
 539         case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32:
 540                 return snd_pcm_status_user32(substream, argp, true);
 541         case SNDRV_PCM_IOCTL_SYNC_PTR32:
 542                 return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
 543         case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
 544                 return snd_pcm_ioctl_channel_info_compat(substream, argp);
 545         case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
 546                 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
 547         case SNDRV_PCM_IOCTL_READI_FRAMES32:
 548                 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
 549         case SNDRV_PCM_IOCTL_WRITEN_FRAMES32:
 550                 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
 551         case SNDRV_PCM_IOCTL_READN_FRAMES32:
 552                 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
 553         case SNDRV_PCM_IOCTL_DELAY32:
 554                 return snd_pcm_ioctl_delay_compat(substream, argp);
 555         case SNDRV_PCM_IOCTL_REWIND32:
 556                 return snd_pcm_ioctl_rewind_compat(substream, argp);
 557         case SNDRV_PCM_IOCTL_FORWARD32:
 558                 return snd_pcm_ioctl_forward_compat(substream, argp);
 559         case SNDRV_PCM_IOCTL_STATUS_COMPAT64:
 560                 return snd_pcm_status_user_compat64(substream, argp, false);
 561         case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64:
 562                 return snd_pcm_status_user_compat64(substream, argp, true);
 563 #ifdef CONFIG_X86_X32
 564         case SNDRV_PCM_IOCTL_SYNC_PTR_X32:
 565                 return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
 566         case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
 567                 return snd_pcm_ioctl_channel_info_x32(substream, argp);
 568 #endif /* CONFIG_X86_X32 */
 569         }
 570
 571         return -ENOIOCTLCMD;
 572 }