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(¶ms, 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, ¶ms); 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; 426 427 if ((ch = substream->runtime->channels) > 128) 428 return -EINVAL; 429 if (get_user(buf, &data32->bufs) || 430 get_user(frames, &data32->frames)) 431 return -EFAULT; 432 bufptr = compat_ptr(buf); 433 bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL); 434 if (bufs == NULL) 435 return -ENOMEM; 436 for (i = 0; i < ch; i++) { 437 u32 ptr; 438 if (get_user(ptr, bufptr)) { 439 kfree(bufs); 440 return -EFAULT; 441 } 442 bufs[i] = compat_ptr(ptr); 443 bufptr++; 444 } 445 if (dir == SNDRV_PCM_STREAM_PLAYBACK) 446 err = snd_pcm_lib_writev(substream, bufs, frames); 447 else 448 err = snd_pcm_lib_readv(substream, bufs, frames); 449 if (err >= 0) { 450 if (put_user(err, &data32->result)) 451 err = -EFAULT; 452 } 453 kfree(bufs); 454 return err; 455 } 456 457 458 struct snd_pcm_mmap_status32 { 459 s32 state; 460 s32 pad1; 461 u32 hw_ptr; 462 struct compat_timespec tstamp; 463 s32 suspended_state; 464 struct compat_timespec audio_tstamp; 465 } __attribute__((packed)); 466 467 struct snd_pcm_mmap_control32 { 468 u32 appl_ptr; 469 u32 avail_min; 470 }; 471 472 struct snd_pcm_sync_ptr32 { 473 u32 flags; 474 union { 475 struct snd_pcm_mmap_status32 status; 476 unsigned char reserved[64]; 477 } s; 478 union { 479 struct snd_pcm_mmap_control32 control; 480 unsigned char reserved[64]; 481 } c; 482 } __attribute__((packed)); 483 484 static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream, 485 struct snd_pcm_sync_ptr32 __user *src) 486 { 487 struct snd_pcm_runtime *runtime = substream->runtime; 488 volatile struct snd_pcm_mmap_status *status; 489 volatile struct snd_pcm_mmap_control *control; 490 u32 sflags; 491 struct snd_pcm_mmap_control scontrol; 492 struct snd_pcm_mmap_status sstatus; 493 snd_pcm_uframes_t boundary; 494 int err; 495 496 if (snd_BUG_ON(!runtime)) 497 return -EINVAL; 498 499 if (get_user(sflags, &src->flags) || 500 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || 501 get_user(scontrol.avail_min, &src->c.control.avail_min)) 502 return -EFAULT; 503 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) { 504 err = snd_pcm_hwsync(substream); 505 if (err < 0) 506 return err; 507 } 508 status = runtime->status; 509 control = runtime->control; 510 boundary = recalculate_boundary(runtime); 511 if (! boundary) 512 boundary = 0x7fffffff; 513 snd_pcm_stream_lock_irq(substream); 514 /* FIXME: we should consider the boundary for the sync from app */ 515 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) 516 control->appl_ptr = scontrol.appl_ptr; 517 else 518 scontrol.appl_ptr = control->appl_ptr % boundary; 519 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) 520 control->avail_min = scontrol.avail_min; 521 else 522 scontrol.avail_min = control->avail_min; 523 sstatus.state = status->state; 524 sstatus.hw_ptr = status->hw_ptr % boundary; 525 sstatus.tstamp = status->tstamp; 526 sstatus.suspended_state = status->suspended_state; 527 sstatus.audio_tstamp = status->audio_tstamp; 528 snd_pcm_stream_unlock_irq(substream); 529 if (put_user(sstatus.state, &src->s.status.state) || 530 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) || 531 compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) || 532 put_user(sstatus.suspended_state, &src->s.status.suspended_state) || 533 compat_put_timespec(&sstatus.audio_tstamp, 534 &src->s.status.audio_tstamp) || 535 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || 536 put_user(scontrol.avail_min, &src->c.control.avail_min)) 537 return -EFAULT; 538 539 return 0; 540 } 541 542 #ifdef CONFIG_X86_X32 543 /* X32 ABI has 64bit timespec and 64bit alignment */ 544 struct snd_pcm_mmap_status_x32 { 545 s32 state; 546 s32 pad1; 547 u32 hw_ptr; 548 u32 pad2; /* alignment */ 549 struct timespec tstamp; 550 s32 suspended_state; 551 s32 pad3; 552 struct timespec audio_tstamp; 553 } __packed; 554 555 struct snd_pcm_mmap_control_x32 { 556 u32 appl_ptr; 557 u32 avail_min; 558 }; 559 560 struct snd_pcm_sync_ptr_x32 { 561 u32 flags; 562 u32 rsvd; /* alignment */ 563 union { 564 struct snd_pcm_mmap_status_x32 status; 565 unsigned char reserved[64]; 566 } s; 567 union { 568 struct snd_pcm_mmap_control_x32 control; 569 unsigned char reserved[64]; 570 } c; 571 } __packed; 572 573 static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream, 574 struct snd_pcm_sync_ptr_x32 __user *src) 575 { 576 struct snd_pcm_runtime *runtime = substream->runtime; 577 volatile struct snd_pcm_mmap_status *status; 578 volatile struct snd_pcm_mmap_control *control; 579 u32 sflags; 580 struct snd_pcm_mmap_control scontrol; 581 struct snd_pcm_mmap_status sstatus; 582 snd_pcm_uframes_t boundary; 583 int err; 584 585 if (snd_BUG_ON(!runtime)) 586 return -EINVAL; 587 588 if (get_user(sflags, &src->flags) || 589 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || 590 get_user(scontrol.avail_min, &src->c.control.avail_min)) 591 return -EFAULT; 592 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) { 593 err = snd_pcm_hwsync(substream); 594 if (err < 0) 595 return err; 596 } 597 status = runtime->status; 598 control = runtime->control; 599 boundary = recalculate_boundary(runtime); 600 if (!boundary) 601 boundary = 0x7fffffff; 602 snd_pcm_stream_lock_irq(substream); 603 /* FIXME: we should consider the boundary for the sync from app */ 604 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) 605 control->appl_ptr = scontrol.appl_ptr; 606 else 607 scontrol.appl_ptr = control->appl_ptr % boundary; 608 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) 609 control->avail_min = scontrol.avail_min; 610 else 611 scontrol.avail_min = control->avail_min; 612 sstatus.state = status->state; 613 sstatus.hw_ptr = status->hw_ptr % boundary; 614 sstatus.tstamp = status->tstamp; 615 sstatus.suspended_state = status->suspended_state; 616 sstatus.audio_tstamp = status->audio_tstamp; 617 snd_pcm_stream_unlock_irq(substream); 618 if (put_user(sstatus.state, &src->s.status.state) || 619 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) || 620 put_timespec(&sstatus.tstamp, &src->s.status.tstamp) || 621 put_user(sstatus.suspended_state, &src->s.status.suspended_state) || 622 put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) || 623 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || 624 put_user(scontrol.avail_min, &src->c.control.avail_min)) 625 return -EFAULT; 626 627 return 0; 628 } 629 #endif /* CONFIG_X86_X32 */ 630 631 /* 632 */ 633 enum { 634 SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32), 635 SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32), 636 SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32), 637 SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32), 638 SNDRV_PCM_IOCTL_STATUS_EXT32 = _IOWR('A', 0x24, struct snd_pcm_status32), 639 SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32), 640 SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32), 641 SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32), 642 SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32), 643 SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32), 644 SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32), 645 SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32), 646 SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32), 647 SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32), 648 #ifdef CONFIG_X86_X32 649 SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info), 650 SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32), 651 SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32), 652 SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32), 653 #endif /* CONFIG_X86_X32 */ 654 }; 655 656 static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) 657 { 658 struct snd_pcm_file *pcm_file; 659 struct snd_pcm_substream *substream; 660 void __user *argp = compat_ptr(arg); 661 662 pcm_file = file->private_data; 663 if (! pcm_file) 664 return -ENOTTY; 665 substream = pcm_file->substream; 666 if (! substream) 667 return -ENOTTY; 668 669 /* 670 * When PCM is used on 32bit mode, we need to disable 671 * mmap of PCM status/control records because of the size 672 * incompatibility. 673 */ 674 pcm_file->no_compat_mmap = 1; 675 676 switch (cmd) { 677 case SNDRV_PCM_IOCTL_PVERSION: 678 case SNDRV_PCM_IOCTL_INFO: 679 case SNDRV_PCM_IOCTL_TSTAMP: 680 case SNDRV_PCM_IOCTL_TTSTAMP: 681 case SNDRV_PCM_IOCTL_USER_PVERSION: 682 case SNDRV_PCM_IOCTL_HWSYNC: 683 case SNDRV_PCM_IOCTL_PREPARE: 684 case SNDRV_PCM_IOCTL_RESET: 685 case SNDRV_PCM_IOCTL_START: 686 case SNDRV_PCM_IOCTL_DROP: 687 case SNDRV_PCM_IOCTL_DRAIN: 688 case SNDRV_PCM_IOCTL_PAUSE: 689 case SNDRV_PCM_IOCTL_HW_FREE: 690 case SNDRV_PCM_IOCTL_RESUME: 691 case SNDRV_PCM_IOCTL_XRUN: 692 case SNDRV_PCM_IOCTL_LINK: 693 case SNDRV_PCM_IOCTL_UNLINK: 694 return snd_pcm_common_ioctl(file, substream, cmd, argp); 695 case SNDRV_PCM_IOCTL_HW_REFINE32: 696 return snd_pcm_ioctl_hw_params_compat(substream, 1, argp); 697 case SNDRV_PCM_IOCTL_HW_PARAMS32: 698 return snd_pcm_ioctl_hw_params_compat(substream, 0, argp); 699 case SNDRV_PCM_IOCTL_SW_PARAMS32: 700 return snd_pcm_ioctl_sw_params_compat(substream, argp); 701 case SNDRV_PCM_IOCTL_STATUS32: 702 return snd_pcm_status_user_compat(substream, argp, false); 703 case SNDRV_PCM_IOCTL_STATUS_EXT32: 704 return snd_pcm_status_user_compat(substream, argp, true); 705 case SNDRV_PCM_IOCTL_SYNC_PTR32: 706 return snd_pcm_ioctl_sync_ptr_compat(substream, argp); 707 case SNDRV_PCM_IOCTL_CHANNEL_INFO32: 708 return snd_pcm_ioctl_channel_info_compat(substream, argp); 709 case SNDRV_PCM_IOCTL_WRITEI_FRAMES32: 710 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); 711 case SNDRV_PCM_IOCTL_READI_FRAMES32: 712 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); 713 case SNDRV_PCM_IOCTL_WRITEN_FRAMES32: 714 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); 715 case SNDRV_PCM_IOCTL_READN_FRAMES32: 716 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); 717 case SNDRV_PCM_IOCTL_DELAY32: 718 return snd_pcm_ioctl_delay_compat(substream, argp); 719 case SNDRV_PCM_IOCTL_REWIND32: 720 return snd_pcm_ioctl_rewind_compat(substream, argp); 721 case SNDRV_PCM_IOCTL_FORWARD32: 722 return snd_pcm_ioctl_forward_compat(substream, argp); 723 #ifdef CONFIG_X86_X32 724 case SNDRV_PCM_IOCTL_STATUS_X32: 725 return snd_pcm_status_user_x32(substream, argp, false); 726 case SNDRV_PCM_IOCTL_STATUS_EXT_X32: 727 return snd_pcm_status_user_x32(substream, argp, true); 728 case SNDRV_PCM_IOCTL_SYNC_PTR_X32: 729 return snd_pcm_ioctl_sync_ptr_x32(substream, argp); 730 case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32: 731 return snd_pcm_ioctl_channel_info_x32(substream, argp); 732 #endif /* CONFIG_X86_X32 */ 733 } 734 735 return -ENOIOCTLCMD; 736 } 737