sound/core/pcm_compat.c

   1 /*
   2  *   32bit -> 64bit ioctl wrapper for PCM API
   3  *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *   GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program; if not, write to the Free Software
  17  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  *
  19  */
  20
  21 /* This file included from pcm_native.c */
  22
  23 #include <linux/compat.h>
  24 #include <linux/slab.h>
  25
  26 static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream,
  27                                       s32 __user *src)
  28 {
  29         snd_pcm_sframes_t delay;
  30         int err;
  31
  32         err = snd_pcm_delay(substream, &delay);
  33         if (err)
  34                 return err;
  35         if (put_user(delay, src))
  36                 return -EFAULT;
  37         return 0;
  38 }
  39
  40 static int snd_pcm_ioctl_rewind_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         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
  49                 err = snd_pcm_playback_rewind(substream, frames);
  50         else
  51                 err = snd_pcm_capture_rewind(substream, frames);
  52         if (put_user(err, src))
  53                 return -EFAULT;
  54         return err < 0 ? err : 0;
  55 }
  56
  57 static int snd_pcm_ioctl_forward_compat(struct snd_pcm_substream *substream,
  58                                        u32 __user *src)
  59 {
  60         snd_pcm_uframes_t frames;
  61         int err;
  62
  63         if (get_user(frames, src))
  64                 return -EFAULT;
  65         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
  66                 err = snd_pcm_playback_forward(substream, frames);
  67         else
  68                 err = snd_pcm_capture_forward(substream, frames);
  69         if (put_user(err, src))
  70                 return -EFAULT;
  71         return err < 0 ? err : 0;
  72 }
  73
  74 struct snd_pcm_hw_params32 {
  75         u32 flags;
  76         struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; /* this must be identical */
  77         struct snd_mask mres[5];        /* reserved masks */
  78         struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
  79         struct snd_interval ires[9];    /* reserved intervals */
  80         u32 rmask;
  81         u32 cmask;
  82         u32 info;
  83         u32 msbits;
  84         u32 rate_num;
  85         u32 rate_den;
  86         u32 fifo_size;
  87         unsigned char reserved[64];
  88 };
  89
  90 struct snd_pcm_sw_params32 {
  91         s32 tstamp_mode;
  92         u32 period_step;
  93         u32 sleep_min;
  94         u32 avail_min;
  95         u32 xfer_align;
  96         u32 start_threshold;
  97         u32 stop_threshold;
  98         u32 silence_threshold;
  99         u32 silence_size;
 100         u32 boundary;
 101         u32 proto;
 102         u32 tstamp_type;
 103         unsigned char reserved[56];
 104 };
 105
 106 /* recalcuate the boundary within 32bit */
 107 static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
 108 {
 109         snd_pcm_uframes_t boundary;
 110
 111         if (! runtime->buffer_size)
 112                 return 0;
 113         boundary = runtime->buffer_size;
 114         while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
 115                 boundary *= 2;
 116         return boundary;
 117 }
 118
 119 static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
 120                                           struct snd_pcm_sw_params32 __user *src)
 121 {
 122         struct snd_pcm_sw_params params;
 123         snd_pcm_uframes_t boundary;
 124         int err;
 125
 126         memset(&params, 0, sizeof(params));
 127         if (get_user(params.tstamp_mode, &src->tstamp_mode) ||
 128             get_user(params.period_step, &src->period_step) ||
 129             get_user(params.sleep_min, &src->sleep_min) ||
 130             get_user(params.avail_min, &src->avail_min) ||
 131             get_user(params.xfer_align, &src->xfer_align) ||
 132             get_user(params.start_threshold, &src->start_threshold) ||
 133             get_user(params.stop_threshold, &src->stop_threshold) ||
 134             get_user(params.silence_threshold, &src->silence_threshold) ||
 135             get_user(params.silence_size, &src->silence_size) ||
 136             get_user(params.tstamp_type, &src->tstamp_type) ||
 137             get_user(params.proto, &src->proto))
 138                 return -EFAULT;
 139         /*
 140          * Check silent_size parameter.  Since we have 64bit boundary,
 141          * silence_size must be compared with the 32bit boundary.
 142          */
 143         boundary = recalculate_boundary(substream->runtime);
 144         if (boundary && params.silence_size >= boundary)
 145                 params.silence_size = substream->runtime->boundary;
 146         err = snd_pcm_sw_params(substream, &params);
 147         if (err < 0)
 148                 return err;
 149         if (boundary && put_user(boundary, &src->boundary))
 150                 return -EFAULT;
 151         return err;
 152 }
 153
 154 struct snd_pcm_channel_info32 {
 155         u32 channel;
 156         u32 offset;
 157         u32 first;
 158         u32 step;
 159 };
 160
 161 static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream,
 162                                              struct snd_pcm_channel_info32 __user *src)
 163 {
 164         struct snd_pcm_channel_info info;
 165         int err;
 166
 167         if (get_user(info.channel, &src->channel) ||
 168             get_user(info.offset, &src->offset) ||
 169             get_user(info.first, &src->first) ||
 170             get_user(info.step, &src->step))
 171                 return -EFAULT;
 172         err = snd_pcm_channel_info(substream, &info);
 173         if (err < 0)
 174                 return err;
 175         if (put_user(info.channel, &src->channel) ||
 176             put_user(info.offset, &src->offset) ||
 177             put_user(info.first, &src->first) ||
 178             put_user(info.step, &src->step))
 179                 return -EFAULT;
 180         return err;
 181 }
 182
 183 #ifdef CONFIG_X86_X32
 184 /* X32 ABI has the same struct as x86-64 for snd_pcm_channel_info */
 185 static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream,
 186                                      struct snd_pcm_channel_info __user *src);
 187 #define snd_pcm_ioctl_channel_info_x32(s, p)    \
 188         snd_pcm_channel_info_user(s, p)
 189 #endif /* CONFIG_X86_X32 */
 190
 191 struct snd_pcm_status32 {
 192         s32 state;
 193         struct compat_timespec trigger_tstamp;
 194         struct compat_timespec tstamp;
 195         u32 appl_ptr;
 196         u32 hw_ptr;
 197         s32 delay;
 198         u32 avail;
 199         u32 avail_max;
 200         u32 overrange;
 201         s32 suspended_state;
 202         u32 audio_tstamp_data;
 203         struct compat_timespec audio_tstamp;
 204         struct compat_timespec driver_tstamp;
 205         u32 audio_tstamp_accuracy;
 206         unsigned char reserved[52-2*sizeof(struct compat_timespec)];
 207 } __attribute__((packed));
 208
 209
 210 static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
 211                                       struct snd_pcm_status32 __user *src,
 212                                       bool ext)
 213 {
 214         struct snd_pcm_status status;
 215         int err;
 216
 217         memset(&status, 0, sizeof(status));
 218         /*
 219          * with extension, parameters are read/write,
 220          * get audio_tstamp_data from user,
 221          * ignore rest of status structure
 222          */
 223         if (ext && get_user(status.audio_tstamp_data,
 224                                 (u32 __user *)(&src->audio_tstamp_data)))
 225                 return -EFAULT;
 226         err = snd_pcm_status(substream, &status);
 227         if (err < 0)
 228                 return err;
 229
 230         if (clear_user(src, sizeof(*src)))
 231                 return -EFAULT;
 232         if (put_user(status.state, &src->state) ||
 233             compat_put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
 234             compat_put_timespec(&status.tstamp, &src->tstamp) ||
 235             put_user(status.appl_ptr, &src->appl_ptr) ||
 236             put_user(status.hw_ptr, &src->hw_ptr) ||
 237             put_user(status.delay, &src->delay) ||
 238             put_user(status.avail, &src->avail) ||
 239             put_user(status.avail_max, &src->avail_max) ||
 240             put_user(status.overrange, &src->overrange) ||
 241             put_user(status.suspended_state, &src->suspended_state) ||
 242             put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
 243             compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
 244             compat_put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
 245             put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
 246                 return -EFAULT;
 247
 248         return err;
 249 }
 250
 251 #ifdef CONFIG_X86_X32
 252 /* X32 ABI has 64bit timespec and 64bit alignment */
 253 struct snd_pcm_status_x32 {
 254         s32 state;
 255         u32 rsvd; /* alignment */
 256         struct timespec trigger_tstamp;
 257         struct timespec tstamp;
 258         u32 appl_ptr;
 259         u32 hw_ptr;
 260         s32 delay;
 261         u32 avail;
 262         u32 avail_max;
 263         u32 overrange;
 264         s32 suspended_state;
 265         u32 audio_tstamp_data;
 266         struct timespec audio_tstamp;
 267         struct timespec driver_tstamp;
 268         u32 audio_tstamp_accuracy;
 269         unsigned char reserved[52-2*sizeof(struct timespec)];
 270 } __packed;
 271
 272 #define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
 273
 274 static int snd_pcm_status_user_x32(struct snd_pcm_substream *substream,
 275                                    struct snd_pcm_status_x32 __user *src,
 276                                    bool ext)
 277 {
 278         struct snd_pcm_status status;
 279         int err;
 280
 281         memset(&status, 0, sizeof(status));
 282         /*
 283          * with extension, parameters are read/write,
 284          * get audio_tstamp_data from user,
 285          * ignore rest of status structure
 286          */
 287         if (ext && get_user(status.audio_tstamp_data,
 288                                 (u32 __user *)(&src->audio_tstamp_data)))
 289                 return -EFAULT;
 290         err = snd_pcm_status(substream, &status);
 291         if (err < 0)
 292                 return err;
 293
 294         if (clear_user(src, sizeof(*src)))
 295                 return -EFAULT;
 296         if (put_user(status.state, &src->state) ||
 297             put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
 298             put_timespec(&status.tstamp, &src->tstamp) ||
 299             put_user(status.appl_ptr, &src->appl_ptr) ||
 300             put_user(status.hw_ptr, &src->hw_ptr) ||
 301             put_user(status.delay, &src->delay) ||
 302             put_user(status.avail, &src->avail) ||
 303             put_user(status.avail_max, &src->avail_max) ||
 304             put_user(status.overrange, &src->overrange) ||
 305             put_user(status.suspended_state, &src->suspended_state) ||
 306             put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
 307             put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
 308             put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
 309             put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
 310                 return -EFAULT;
 311
 312         return err;
 313 }
 314 #endif /* CONFIG_X86_X32 */
 315
 316 /* both for HW_PARAMS and HW_REFINE */
 317 static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
 318                                           int refine,
 319                                           struct snd_pcm_hw_params32 __user *data32)
 320 {
 321         struct snd_pcm_hw_params *data;
 322         struct snd_pcm_runtime *runtime;
 323         int err;
 324
 325         if (! (runtime = substream->runtime))
 326                 return -ENOTTY;
 327
 328         data = kmalloc(sizeof(*data), GFP_KERNEL);
 329         if (!data)
 330                 return -ENOMEM;
 331
 332         /* only fifo_size (RO from userspace) is different, so just copy all */
 333         if (copy_from_user(data, data32, sizeof(*data32))) {
 334                 err = -EFAULT;
 335                 goto error;
 336         }
 337
 338         if (refine)
 339                 err = snd_pcm_hw_refine(substream, data);
 340         else
 341                 err = snd_pcm_hw_params(substream, data);
 342         if (err < 0)
 343                 goto error;
 344         if (copy_to_user(data32, data, sizeof(*data32)) ||
 345             put_user(data->fifo_size, &data32->fifo_size)) {
 346                 err = -EFAULT;
 347                 goto error;
 348         }
 349
 350         if (! refine) {
 351                 unsigned int new_boundary = recalculate_boundary(runtime);
 352                 if (new_boundary)
 353                         runtime->boundary = new_boundary;
 354         }
 355  error:
 356         kfree(data);
 357         return err;
 358 }
 359
 360
 361 /*
 362  */
 363 struct snd_xferi32 {
 364         s32 result;
 365         u32 buf;
 366         u32 frames;
 367 };
 368
 369 static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream,
 370                                       int dir, struct snd_xferi32 __user *data32)
 371 {
 372         compat_caddr_t buf;
 373         u32 frames;
 374         int err;
 375
 376         if (! substream->runtime)
 377                 return -ENOTTY;
 378         if (substream->stream != dir)
 379                 return -EINVAL;
 380         if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
 381                 return -EBADFD;
 382
 383         if (get_user(buf, &data32->buf) ||
 384             get_user(frames, &data32->frames))
 385                 return -EFAULT;
 386
 387         if (dir == SNDRV_PCM_STREAM_PLAYBACK)
 388                 err = snd_pcm_lib_write(substream, compat_ptr(buf), frames);
 389         else
 390                 err = snd_pcm_lib_read(substream, compat_ptr(buf), frames);
 391         if (err < 0)
 392                 return err;
 393         /* copy the result */
 394         if (put_user(err, &data32->result))
 395                 return -EFAULT;
 396         return 0;
 397 }
 398
 399
 400 /* snd_xfern needs remapping of bufs */
 401 struct snd_xfern32 {
 402         s32 result;
 403         u32 bufs;  /* this is void **; */
 404         u32 frames;
 405 };
 406
 407 /*
 408  * xfern ioctl nees to copy (up to) 128 pointers on stack.
 409  * although we may pass the copied pointers through f_op->ioctl, but the ioctl
 410  * handler there expands again the same 128 pointers on stack, so it is better
 411  * to handle the function (calling pcm_readv/writev) directly in this handler.
 412  */
 413 static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
 414                                       int dir, struct snd_xfern32 __user *data32)
 415 {
 416         compat_caddr_t buf;
 417         compat_caddr_t __user *bufptr;
 418         u32 frames;
 419         void __user **bufs;
 420         int err, ch, i;
 421
 422         if (! substream->runtime)
 423                 return -ENOTTY;
 424         if (substream->stream != dir)
 425                 return -EINVAL;
 426         if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
 427                 return -EBADFD;
 428
 429         if ((ch = substream->runtime->channels) > 128)
 430                 return -EINVAL;
 431         if (get_user(buf, &data32->bufs) ||
 432             get_user(frames, &data32->frames))
 433                 return -EFAULT;
 434         bufptr = compat_ptr(buf);
 435         bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL);
 436         if (bufs == NULL)
 437                 return -ENOMEM;
 438         for (i = 0; i < ch; i++) {
 439                 u32 ptr;
 440                 if (get_user(ptr, bufptr)) {
 441                         kfree(bufs);
 442                         return -EFAULT;
 443                 }
 444                 bufs[i] = compat_ptr(ptr);
 445                 bufptr++;
 446         }
 447         if (dir == SNDRV_PCM_STREAM_PLAYBACK)
 448                 err = snd_pcm_lib_writev(substream, bufs, frames);
 449         else
 450                 err = snd_pcm_lib_readv(substream, bufs, frames);
 451         if (err >= 0) {
 452                 if (put_user(err, &data32->result))
 453                         err = -EFAULT;
 454         }
 455         kfree(bufs);
 456         return err;
 457 }
 458
 459
 460 struct snd_pcm_mmap_status32 {
 461         s32 state;
 462         s32 pad1;
 463         u32 hw_ptr;
 464         struct compat_timespec tstamp;
 465         s32 suspended_state;
 466         struct compat_timespec audio_tstamp;
 467 } __attribute__((packed));
 468
 469 struct snd_pcm_mmap_control32 {
 470         u32 appl_ptr;
 471         u32 avail_min;
 472 };
 473
 474 struct snd_pcm_sync_ptr32 {
 475         u32 flags;
 476         union {
 477                 struct snd_pcm_mmap_status32 status;
 478                 unsigned char reserved[64];
 479         } s;
 480         union {
 481                 struct snd_pcm_mmap_control32 control;
 482                 unsigned char reserved[64];
 483         } c;
 484 } __attribute__((packed));
 485
 486 static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
 487                                          struct snd_pcm_sync_ptr32 __user *src)
 488 {
 489         struct snd_pcm_runtime *runtime = substream->runtime;
 490         volatile struct snd_pcm_mmap_status *status;
 491         volatile struct snd_pcm_mmap_control *control;
 492         u32 sflags;
 493         struct snd_pcm_mmap_control scontrol;
 494         struct snd_pcm_mmap_status sstatus;
 495         snd_pcm_uframes_t boundary;
 496         int err;
 497
 498         if (snd_BUG_ON(!runtime))
 499                 return -EINVAL;
 500
 501         if (get_user(sflags, &src->flags) ||
 502             get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
 503             get_user(scontrol.avail_min, &src->c.control.avail_min))
 504                 return -EFAULT;
 505         if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
 506                 err = snd_pcm_hwsync(substream);
 507                 if (err < 0)
 508                         return err;
 509         }
 510         status = runtime->status;
 511         control = runtime->control;
 512         boundary = recalculate_boundary(runtime);
 513         if (! boundary)
 514                 boundary = 0x7fffffff;
 515         snd_pcm_stream_lock_irq(substream);
 516         /* FIXME: we should consider the boundary for the sync from app */
 517         if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
 518                 control->appl_ptr = scontrol.appl_ptr;
 519         else
 520                 scontrol.appl_ptr = control->appl_ptr % boundary;
 521         if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
 522                 control->avail_min = scontrol.avail_min;
 523         else
 524                 scontrol.avail_min = control->avail_min;
 525         sstatus.state = status->state;
 526         sstatus.hw_ptr = status->hw_ptr % boundary;
 527         sstatus.tstamp = status->tstamp;
 528         sstatus.suspended_state = status->suspended_state;
 529         sstatus.audio_tstamp = status->audio_tstamp;
 530         snd_pcm_stream_unlock_irq(substream);
 531         if (put_user(sstatus.state, &src->s.status.state) ||
 532             put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
 533             compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
 534             put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
 535             compat_put_timespec(&sstatus.audio_tstamp,
 536                     &src->s.status.audio_tstamp) ||
 537             put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
 538             put_user(scontrol.avail_min, &src->c.control.avail_min))
 539                 return -EFAULT;
 540
 541         return 0;
 542 }
 543
 544 #ifdef CONFIG_X86_X32
 545 /* X32 ABI has 64bit timespec and 64bit alignment */
 546 struct snd_pcm_mmap_status_x32 {
 547         s32 state;
 548         s32 pad1;
 549         u32 hw_ptr;
 550         u32 pad2; /* alignment */
 551         struct timespec tstamp;
 552         s32 suspended_state;
 553         s32 pad3;
 554         struct timespec audio_tstamp;
 555 } __packed;
 556
 557 struct snd_pcm_mmap_control_x32 {
 558         u32 appl_ptr;
 559         u32 avail_min;
 560 };
 561
 562 struct snd_pcm_sync_ptr_x32 {
 563         u32 flags;
 564         u32 rsvd; /* alignment */
 565         union {
 566                 struct snd_pcm_mmap_status_x32 status;
 567                 unsigned char reserved[64];
 568         } s;
 569         union {
 570                 struct snd_pcm_mmap_control_x32 control;
 571                 unsigned char reserved[64];
 572         } c;
 573 } __packed;
 574
 575 static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
 576                                       struct snd_pcm_sync_ptr_x32 __user *src)
 577 {
 578         struct snd_pcm_runtime *runtime = substream->runtime;
 579         volatile struct snd_pcm_mmap_status *status;
 580         volatile struct snd_pcm_mmap_control *control;
 581         u32 sflags;
 582         struct snd_pcm_mmap_control scontrol;
 583         struct snd_pcm_mmap_status sstatus;
 584         snd_pcm_uframes_t boundary;
 585         int err;
 586
 587         if (snd_BUG_ON(!runtime))
 588                 return -EINVAL;
 589
 590         if (get_user(sflags, &src->flags) ||
 591             get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
 592             get_user(scontrol.avail_min, &src->c.control.avail_min))
 593                 return -EFAULT;
 594         if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
 595                 err = snd_pcm_hwsync(substream);
 596                 if (err < 0)
 597                         return err;
 598         }
 599         status = runtime->status;
 600         control = runtime->control;
 601         boundary = recalculate_boundary(runtime);
 602         if (!boundary)
 603                 boundary = 0x7fffffff;
 604         snd_pcm_stream_lock_irq(substream);
 605         /* FIXME: we should consider the boundary for the sync from app */
 606         if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
 607                 control->appl_ptr = scontrol.appl_ptr;
 608         else
 609                 scontrol.appl_ptr = control->appl_ptr % boundary;
 610         if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
 611                 control->avail_min = scontrol.avail_min;
 612         else
 613                 scontrol.avail_min = control->avail_min;
 614         sstatus.state = status->state;
 615         sstatus.hw_ptr = status->hw_ptr % boundary;
 616         sstatus.tstamp = status->tstamp;
 617         sstatus.suspended_state = status->suspended_state;
 618         sstatus.audio_tstamp = status->audio_tstamp;
 619         snd_pcm_stream_unlock_irq(substream);
 620         if (put_user(sstatus.state, &src->s.status.state) ||
 621             put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
 622             put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
 623             put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
 624             put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) ||
 625             put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
 626             put_user(scontrol.avail_min, &src->c.control.avail_min))
 627                 return -EFAULT;
 628
 629         return 0;
 630 }
 631 #endif /* CONFIG_X86_X32 */
 632
 633 /*
 634  */
 635 enum {
 636         SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
 637         SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
 638         SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
 639         SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32),
 640         SNDRV_PCM_IOCTL_STATUS_EXT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
 641         SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
 642         SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
 643         SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
 644         SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32),
 645         SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32),
 646         SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
 647         SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
 648         SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
 649         SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
 650 #ifdef CONFIG_X86_X32
 651         SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
 652         SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32),
 653         SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32),
 654         SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
 655 #endif /* CONFIG_X86_X32 */
 656 };
 657
 658 static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
 659 {
 660         struct snd_pcm_file *pcm_file;
 661         struct snd_pcm_substream *substream;
 662         void __user *argp = compat_ptr(arg);
 663
 664         pcm_file = file->private_data;
 665         if (! pcm_file)
 666                 return -ENOTTY;
 667         substream = pcm_file->substream;
 668         if (! substream)
 669                 return -ENOTTY;
 670
 671         /*
 672          * When PCM is used on 32bit mode, we need to disable
 673          * mmap of PCM status/control records because of the size
 674          * incompatibility.
 675          */
 676         pcm_file->no_compat_mmap = 1;
 677
 678         switch (cmd) {
 679         case SNDRV_PCM_IOCTL_PVERSION:
 680         case SNDRV_PCM_IOCTL_INFO:
 681         case SNDRV_PCM_IOCTL_TSTAMP:
 682         case SNDRV_PCM_IOCTL_TTSTAMP:
 683         case SNDRV_PCM_IOCTL_USER_PVERSION:
 684         case SNDRV_PCM_IOCTL_HWSYNC:
 685         case SNDRV_PCM_IOCTL_PREPARE:
 686         case SNDRV_PCM_IOCTL_RESET:
 687         case SNDRV_PCM_IOCTL_START:
 688         case SNDRV_PCM_IOCTL_DROP:
 689         case SNDRV_PCM_IOCTL_DRAIN:
 690         case SNDRV_PCM_IOCTL_PAUSE:
 691         case SNDRV_PCM_IOCTL_HW_FREE:
 692         case SNDRV_PCM_IOCTL_RESUME:
 693         case SNDRV_PCM_IOCTL_XRUN:
 694         case SNDRV_PCM_IOCTL_LINK:
 695         case SNDRV_PCM_IOCTL_UNLINK:
 696                 return snd_pcm_common_ioctl(file, substream, cmd, argp);
 697         case SNDRV_PCM_IOCTL_HW_REFINE32:
 698                 return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
 699         case SNDRV_PCM_IOCTL_HW_PARAMS32:
 700                 return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
 701         case SNDRV_PCM_IOCTL_SW_PARAMS32:
 702                 return snd_pcm_ioctl_sw_params_compat(substream, argp);
 703         case SNDRV_PCM_IOCTL_STATUS32:
 704                 return snd_pcm_status_user_compat(substream, argp, false);
 705         case SNDRV_PCM_IOCTL_STATUS_EXT32:
 706                 return snd_pcm_status_user_compat(substream, argp, true);
 707         case SNDRV_PCM_IOCTL_SYNC_PTR32:
 708                 return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
 709         case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
 710                 return snd_pcm_ioctl_channel_info_compat(substream, argp);
 711         case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
 712                 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
 713         case SNDRV_PCM_IOCTL_READI_FRAMES32:
 714                 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
 715         case SNDRV_PCM_IOCTL_WRITEN_FRAMES32:
 716                 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
 717         case SNDRV_PCM_IOCTL_READN_FRAMES32:
 718                 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
 719         case SNDRV_PCM_IOCTL_DELAY32:
 720                 return snd_pcm_ioctl_delay_compat(substream, argp);
 721         case SNDRV_PCM_IOCTL_REWIND32:
 722                 return snd_pcm_ioctl_rewind_compat(substream, argp);
 723         case SNDRV_PCM_IOCTL_FORWARD32:
 724                 return snd_pcm_ioctl_forward_compat(substream, argp);
 725 #ifdef CONFIG_X86_X32
 726         case SNDRV_PCM_IOCTL_STATUS_X32:
 727                 return snd_pcm_status_user_x32(substream, argp, false);
 728         case SNDRV_PCM_IOCTL_STATUS_EXT_X32:
 729                 return snd_pcm_status_user_x32(substream, argp, true);
 730         case SNDRV_PCM_IOCTL_SYNC_PTR_X32:
 731                 return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
 732         case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
 733                 return snd_pcm_ioctl_channel_info_x32(substream, argp);
 734 #endif /* CONFIG_X86_X32 */
 735         }
 736
 737         return -ENOIOCTLCMD;
 738 }