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