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
snd_pcm_ioctl_delay_compat(struct snd_pcm_substream * substream,s32 __user * src)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
snd_pcm_ioctl_rewind_compat(struct snd_pcm_substream * substream,u32 __user * src)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
snd_pcm_ioctl_forward_compat(struct snd_pcm_substream * substream,u32 __user * src)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
snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream * substream,struct snd_pcm_sw_params32 __user * src)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(¶ms, 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, ¶ms);
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
snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream * substream,struct snd_pcm_channel_info32 __user * src)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_ABI
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_ABI */
157
158 struct compat_snd_pcm_status64 {
159 snd_pcm_state_t 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 snd_pcm_state_t 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
snd_pcm_status_user_compat64(struct snd_pcm_substream * substream,struct compat_snd_pcm_status64 __user * src,bool ext)181 static int snd_pcm_status_user_compat64(struct snd_pcm_substream *substream,
182 struct compat_snd_pcm_status64 __user *src,
183 bool ext)
184 {
185 struct snd_pcm_status64 status;
186 struct compat_snd_pcm_status64 compat_status64;
187 int err;
188
189 memset(&status, 0, sizeof(status));
190 memset(&compat_status64, 0, sizeof(compat_status64));
191 /*
192 * with extension, parameters are read/write,
193 * get audio_tstamp_data from user,
194 * ignore rest of status structure
195 */
196 if (ext && get_user(status.audio_tstamp_data,
197 (u32 __user *)(&src->audio_tstamp_data)))
198 return -EFAULT;
199 err = snd_pcm_status64(substream, &status);
200 if (err < 0)
201 return err;
202
203 if (clear_user(src, sizeof(*src)))
204 return -EFAULT;
205
206 compat_status64 = (struct compat_snd_pcm_status64) {
207 .state = status.state,
208 .trigger_tstamp_sec = status.trigger_tstamp_sec,
209 .trigger_tstamp_nsec = status.trigger_tstamp_nsec,
210 .tstamp_sec = status.tstamp_sec,
211 .tstamp_nsec = status.tstamp_nsec,
212 .appl_ptr = status.appl_ptr,
213 .hw_ptr = status.hw_ptr,
214 .delay = status.delay,
215 .avail = status.avail,
216 .avail_max = status.avail_max,
217 .overrange = status.overrange,
218 .suspended_state = status.suspended_state,
219 .audio_tstamp_data = status.audio_tstamp_data,
220 .audio_tstamp_sec = status.audio_tstamp_sec,
221 .audio_tstamp_nsec = status.audio_tstamp_nsec,
222 .driver_tstamp_sec = status.audio_tstamp_sec,
223 .driver_tstamp_nsec = status.audio_tstamp_nsec,
224 .audio_tstamp_accuracy = status.audio_tstamp_accuracy,
225 };
226
227 if (copy_to_user(src, &compat_status64, sizeof(compat_status64)))
228 return -EFAULT;
229
230 return err;
231 }
232
233 /* both for HW_PARAMS and HW_REFINE */
snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream * substream,int refine,struct snd_pcm_hw_params32 __user * data32)234 static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
235 int refine,
236 struct snd_pcm_hw_params32 __user *data32)
237 {
238 struct snd_pcm_runtime *runtime;
239 int err;
240
241 runtime = substream->runtime;
242 if (!runtime)
243 return -ENOTTY;
244
245 struct snd_pcm_hw_params *data __free(kfree) =
246 kmalloc_obj(*data);
247 if (!data)
248 return -ENOMEM;
249
250 /* only fifo_size (RO from userspace) is different, so just copy all */
251 if (copy_from_user(data, data32, sizeof(*data32)))
252 return -EFAULT;
253
254 if (refine) {
255 err = snd_pcm_hw_refine(substream, data);
256 if (err < 0)
257 return err;
258 err = fixup_unreferenced_params(substream, data);
259 } else {
260 err = snd_pcm_hw_params(substream, data);
261 }
262 if (err < 0)
263 return err;
264 if (copy_to_user(data32, data, sizeof(*data32)) ||
265 put_user(data->fifo_size, &data32->fifo_size))
266 return -EFAULT;
267
268 if (! refine) {
269 unsigned int new_boundary = recalculate_boundary(runtime);
270 if (new_boundary)
271 runtime->boundary = new_boundary;
272 }
273 return err;
274 }
275
276
277 /*
278 */
279 struct snd_xferi32 {
280 s32 result;
281 u32 buf;
282 u32 frames;
283 };
284
snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream * substream,int dir,struct snd_xferi32 __user * data32)285 static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream,
286 int dir, struct snd_xferi32 __user *data32)
287 {
288 compat_caddr_t buf;
289 u32 frames;
290 int err;
291
292 if (! substream->runtime)
293 return -ENOTTY;
294 if (substream->stream != dir)
295 return -EINVAL;
296 if (substream->runtime->state == SNDRV_PCM_STATE_OPEN)
297 return -EBADFD;
298
299 if (get_user(buf, &data32->buf) ||
300 get_user(frames, &data32->frames))
301 return -EFAULT;
302
303 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
304 err = snd_pcm_lib_write(substream, compat_ptr(buf), frames);
305 else
306 err = snd_pcm_lib_read(substream, compat_ptr(buf), frames);
307 if (err < 0)
308 return err;
309 /* copy the result */
310 if (put_user(err, &data32->result))
311 return -EFAULT;
312 return 0;
313 }
314
315
316 /* snd_xfern needs remapping of bufs */
317 struct snd_xfern32 {
318 s32 result;
319 u32 bufs; /* this is void **; */
320 u32 frames;
321 };
322
323 /*
324 * xfern ioctl nees to copy (up to) 128 pointers on stack.
325 * although we may pass the copied pointers through f_op->ioctl, but the ioctl
326 * handler there expands again the same 128 pointers on stack, so it is better
327 * to handle the function (calling pcm_readv/writev) directly in this handler.
328 */
snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream * substream,int dir,struct snd_xfern32 __user * data32)329 static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
330 int dir, struct snd_xfern32 __user *data32)
331 {
332 compat_caddr_t buf;
333 compat_caddr_t __user *bufptr;
334 u32 frames;
335 int err, ch, i;
336
337 if (! substream->runtime)
338 return -ENOTTY;
339 if (substream->stream != dir)
340 return -EINVAL;
341 if (substream->runtime->state == SNDRV_PCM_STATE_OPEN)
342 return -EBADFD;
343
344 ch = substream->runtime->channels;
345 if (ch > 128)
346 return -EINVAL;
347 if (get_user(buf, &data32->bufs) ||
348 get_user(frames, &data32->frames))
349 return -EFAULT;
350 bufptr = compat_ptr(buf);
351
352 void __user **bufs __free(kfree) =
353 kmalloc_array(ch, sizeof(void __user *), GFP_KERNEL);
354 if (bufs == NULL)
355 return -ENOMEM;
356 for (i = 0; i < ch; i++) {
357 u32 ptr;
358 if (get_user(ptr, bufptr))
359 return -EFAULT;
360 bufs[i] = compat_ptr(ptr);
361 bufptr++;
362 }
363 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
364 err = snd_pcm_lib_writev(substream, bufs, frames);
365 else
366 err = snd_pcm_lib_readv(substream, bufs, frames);
367 if (err >= 0) {
368 if (put_user(err, &data32->result))
369 return -EFAULT;
370 }
371 return err;
372 }
373
374 #ifdef CONFIG_X86_X32_ABI
375 /* X32 ABI has 64bit timespec and 64bit alignment */
376 struct snd_pcm_mmap_status_x32 {
377 snd_pcm_state_t state;
378 s32 pad1;
379 u32 hw_ptr;
380 u32 pad2; /* alignment */
381 struct __snd_timespec64 tstamp;
382 snd_pcm_state_t suspended_state;
383 s32 pad3;
384 struct __snd_timespec64 audio_tstamp;
385 } __packed;
386
387 struct snd_pcm_mmap_control_x32 {
388 u32 appl_ptr;
389 u32 avail_min;
390 };
391
392 struct snd_pcm_sync_ptr_x32 {
393 u32 flags;
394 u32 rsvd; /* alignment */
395 union {
396 struct snd_pcm_mmap_status_x32 status;
397 unsigned char reserved[64];
398 } s;
399 union {
400 struct snd_pcm_mmap_control_x32 control;
401 unsigned char reserved[64];
402 } c;
403 } __packed;
404
snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream * substream,struct snd_pcm_sync_ptr_x32 __user * src)405 static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
406 struct snd_pcm_sync_ptr_x32 __user *src)
407 {
408 struct snd_pcm_runtime *runtime = substream->runtime;
409 volatile struct snd_pcm_mmap_status *status;
410 volatile struct snd_pcm_mmap_control *control;
411 u32 sflags;
412 struct snd_pcm_mmap_control scontrol;
413 struct snd_pcm_mmap_status sstatus;
414 snd_pcm_uframes_t boundary;
415 int err;
416
417 if (snd_BUG_ON(!runtime))
418 return -EINVAL;
419
420 if (snd_pcm_sync_ptr_get_user(sflags, scontrol, src))
421 return -EFAULT;
422 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
423 err = snd_pcm_hwsync(substream);
424 if (err < 0)
425 return err;
426 }
427 status = runtime->status;
428 control = runtime->control;
429 boundary = recalculate_boundary(runtime);
430 if (!boundary)
431 boundary = 0x7fffffff;
432 scoped_guard(pcm_stream_lock_irq, substream) {
433 /* FIXME: we should consider the boundary for the sync from app */
434 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
435 control->appl_ptr = scontrol.appl_ptr;
436 else
437 scontrol.appl_ptr = control->appl_ptr % boundary;
438 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
439 control->avail_min = scontrol.avail_min;
440 else
441 scontrol.avail_min = control->avail_min;
442 sstatus.state = status->state;
443 sstatus.hw_ptr = status->hw_ptr % boundary;
444 sstatus.tstamp = status->tstamp;
445 sstatus.suspended_state = status->suspended_state;
446 sstatus.audio_tstamp = status->audio_tstamp;
447 }
448 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
449 snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
450 if (snd_pcm_sync_ptr_put_user(sstatus, scontrol, src))
451 return -EFAULT;
452
453 return 0;
454 }
455 #endif /* CONFIG_X86_X32_ABI */
456
457 #ifdef __BIG_ENDIAN
458 typedef char __pad_before_u32[4];
459 typedef char __pad_after_u32[0];
460 #else
461 typedef char __pad_before_u32[0];
462 typedef char __pad_after_u32[4];
463 #endif
464
465 /* PCM 2.0.15 API definition had a bug in mmap control; it puts the avail_min
466 * at the wrong offset due to a typo in padding type.
467 * The bug hits only 32bit.
468 * A workaround for incorrect read/write is needed only in 32bit compat mode.
469 */
470 struct __snd_pcm_mmap_control64_buggy {
471 __pad_before_u32 __pad1;
472 __u32 appl_ptr;
473 __pad_before_u32 __pad2; /* SiC! here is the bug */
474 __pad_before_u32 __pad3;
475 __u32 avail_min;
476 __pad_after_uframe __pad4;
477 };
478
snd_pcm_ioctl_sync_ptr_buggy(struct snd_pcm_substream * substream,struct snd_pcm_sync_ptr __user * _sync_ptr)479 static int snd_pcm_ioctl_sync_ptr_buggy(struct snd_pcm_substream *substream,
480 struct snd_pcm_sync_ptr __user *_sync_ptr)
481 {
482 struct snd_pcm_runtime *runtime = substream->runtime;
483 struct snd_pcm_sync_ptr sync_ptr;
484 struct __snd_pcm_mmap_control64_buggy *sync_cp;
485 volatile struct snd_pcm_mmap_status *status;
486 volatile struct snd_pcm_mmap_control *control;
487 int err;
488
489 memset(&sync_ptr, 0, sizeof(sync_ptr));
490 sync_cp = (struct __snd_pcm_mmap_control64_buggy *)&sync_ptr.c.control;
491 if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags)))
492 return -EFAULT;
493 if (copy_from_user(sync_cp, &(_sync_ptr->c.control), sizeof(*sync_cp)))
494 return -EFAULT;
495 status = runtime->status;
496 control = runtime->control;
497 if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
498 err = snd_pcm_hwsync(substream);
499 if (err < 0)
500 return err;
501 }
502 scoped_guard(pcm_stream_lock_irq, substream) {
503 if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) {
504 err = pcm_lib_apply_appl_ptr(substream, sync_cp->appl_ptr);
505 if (err < 0)
506 return err;
507 } else {
508 sync_cp->appl_ptr = control->appl_ptr;
509 }
510 if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
511 control->avail_min = sync_cp->avail_min;
512 else
513 sync_cp->avail_min = control->avail_min;
514 sync_ptr.s.status.state = status->state;
515 sync_ptr.s.status.hw_ptr = status->hw_ptr;
516 sync_ptr.s.status.tstamp = status->tstamp;
517 sync_ptr.s.status.suspended_state = status->suspended_state;
518 sync_ptr.s.status.audio_tstamp = status->audio_tstamp;
519 }
520 if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL))
521 snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
522 if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr)))
523 return -EFAULT;
524 return 0;
525 }
526
527 /*
528 */
529 enum {
530 SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
531 SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
532 SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
533 SNDRV_PCM_IOCTL_STATUS_COMPAT32 = _IOR('A', 0x20, struct snd_pcm_status32),
534 SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
535 SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
536 SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
537 SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
538 SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32),
539 SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32),
540 SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
541 SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
542 SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
543 SNDRV_PCM_IOCTL_STATUS_COMPAT64 = _IOR('A', 0x20, struct compat_snd_pcm_status64),
544 SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64 = _IOWR('A', 0x24, struct compat_snd_pcm_status64),
545 #ifdef CONFIG_X86_X32_ABI
546 SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
547 SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
548 #endif /* CONFIG_X86_X32_ABI */
549 };
550
snd_pcm_ioctl_compat(struct file * file,unsigned int cmd,unsigned long arg)551 static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
552 {
553 struct snd_pcm_file *pcm_file;
554 struct snd_pcm_substream *substream;
555 void __user *argp = compat_ptr(arg);
556
557 pcm_file = file->private_data;
558 if (! pcm_file)
559 return -ENOTTY;
560 substream = pcm_file->substream;
561 if (! substream)
562 return -ENOTTY;
563
564 /*
565 * When PCM is used on 32bit mode, we need to disable
566 * mmap of the old PCM status/control records because
567 * of the size incompatibility.
568 */
569 pcm_file->no_compat_mmap = 1;
570
571 switch (cmd) {
572 case SNDRV_PCM_IOCTL_PVERSION:
573 case SNDRV_PCM_IOCTL_INFO:
574 case SNDRV_PCM_IOCTL_TSTAMP:
575 case SNDRV_PCM_IOCTL_TTSTAMP:
576 case SNDRV_PCM_IOCTL_USER_PVERSION:
577 case SNDRV_PCM_IOCTL_HWSYNC:
578 case SNDRV_PCM_IOCTL_PREPARE:
579 case SNDRV_PCM_IOCTL_RESET:
580 case SNDRV_PCM_IOCTL_START:
581 case SNDRV_PCM_IOCTL_DROP:
582 case SNDRV_PCM_IOCTL_DRAIN:
583 case SNDRV_PCM_IOCTL_PAUSE:
584 case SNDRV_PCM_IOCTL_HW_FREE:
585 case SNDRV_PCM_IOCTL_RESUME:
586 case SNDRV_PCM_IOCTL_XRUN:
587 case SNDRV_PCM_IOCTL_LINK:
588 case SNDRV_PCM_IOCTL_UNLINK:
589 case __SNDRV_PCM_IOCTL_SYNC_PTR32:
590 return snd_pcm_common_ioctl(file, substream, cmd, argp);
591 case __SNDRV_PCM_IOCTL_SYNC_PTR64:
592 #ifdef CONFIG_X86_X32_ABI
593 if (in_x32_syscall())
594 return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
595 #endif /* CONFIG_X86_X32_ABI */
596 return snd_pcm_ioctl_sync_ptr_buggy(substream, argp);
597 case SNDRV_PCM_IOCTL_HW_REFINE32:
598 return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
599 case SNDRV_PCM_IOCTL_HW_PARAMS32:
600 return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
601 case SNDRV_PCM_IOCTL_SW_PARAMS32:
602 return snd_pcm_ioctl_sw_params_compat(substream, argp);
603 case SNDRV_PCM_IOCTL_STATUS_COMPAT32:
604 return snd_pcm_status_user32(substream, argp, false);
605 case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32:
606 return snd_pcm_status_user32(substream, argp, true);
607 case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
608 return snd_pcm_ioctl_channel_info_compat(substream, argp);
609 case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
610 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
611 case SNDRV_PCM_IOCTL_READI_FRAMES32:
612 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
613 case SNDRV_PCM_IOCTL_WRITEN_FRAMES32:
614 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
615 case SNDRV_PCM_IOCTL_READN_FRAMES32:
616 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
617 case SNDRV_PCM_IOCTL_DELAY32:
618 return snd_pcm_ioctl_delay_compat(substream, argp);
619 case SNDRV_PCM_IOCTL_REWIND32:
620 return snd_pcm_ioctl_rewind_compat(substream, argp);
621 case SNDRV_PCM_IOCTL_FORWARD32:
622 return snd_pcm_ioctl_forward_compat(substream, argp);
623 case SNDRV_PCM_IOCTL_STATUS_COMPAT64:
624 return snd_pcm_status_user_compat64(substream, argp, false);
625 case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64:
626 return snd_pcm_status_user_compat64(substream, argp, true);
627 #ifdef CONFIG_X86_X32_ABI
628 case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
629 return snd_pcm_ioctl_channel_info_x32(substream, argp);
630 #endif /* CONFIG_X86_X32_ABI */
631 }
632
633 return -ENOIOCTLCMD;
634 }
635