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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
[linux-block.git] / sound / core / pcm_compat.c
CommitLineData
1a59d1b8 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4
LT		 2/*
3 * 32bit -> 64bit ioctl wrapper for PCM API
4 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
1da177e4
LT		 5 */
6
7/* This file included from pcm_native.c */
8
9#include <linux/compat.h>
5a0e3ad6 10#include <linux/slab.h>
1da177e4 11
877211f5 12static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 13 s32 __user *src)
14{
15 snd_pcm_sframes_t delay;
912e4c33 16 int err;
1da177e4 17
912e4c33
JM		 18 err = snd_pcm_delay(substream, &delay);
19 if (err)
20 return err;
1da177e4
LT		 21 if (put_user(delay, src))
22 return -EFAULT;
c2c86a97 23 return 0;
1da177e4
LT		 24}
25
877211f5 26static int snd_pcm_ioctl_rewind_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 27 u32 __user *src)
28{
29 snd_pcm_uframes_t frames;
30 int err;
31
32 if (get_user(frames, src))
33 return -EFAULT;
763e5067 34 err = snd_pcm_rewind(substream, frames);
1da177e4
LT		 35 if (put_user(err, src))
36 return -EFAULT;
37 return err < 0 ? err : 0;
38}
39
877211f5 40static int snd_pcm_ioctl_forward_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 41 u32 __user *src)
42{
43 snd_pcm_uframes_t frames;
44 int err;
45
46 if (get_user(frames, src))
47 return -EFAULT;
763e5067 48 err = snd_pcm_forward(substream, frames);
1da177e4
LT		 49 if (put_user(err, src))
50 return -EFAULT;
51 return err < 0 ? err : 0;
52}
53
877211f5 54struct snd_pcm_hw_params32 {
1da177e4 55 u32 flags;
877211f5
TI		 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 */
1da177e4
LT		 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
877211f5 70struct snd_pcm_sw_params32 {
1da177e4
LT		 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;
e58c295c
TI		 81 u32 proto;
82 u32 tstamp_type;
83 unsigned char reserved[56];
1da177e4
LT		 84};
85
b2711310 86/* recalcuate the boundary within 32bit */
877211f5 87static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
b2711310
TI		 88{
89 snd_pcm_uframes_t boundary;
90
91 if (! runtime->buffer_size)
92 return 0;
93 boundary = runtime->buffer_size;
94 while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
95 boundary *= 2;
96 return boundary;
97}
98
877211f5
TI		 99static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
100 struct snd_pcm_sw_params32 __user *src)
1da177e4 101{
877211f5 102 struct snd_pcm_sw_params params;
b2711310 103 snd_pcm_uframes_t boundary;
1da177e4
LT		 104 int err;
105
106 memset(&params, 0, sizeof(params));
107 if (get_user(params.tstamp_mode, &src->tstamp_mode) ||
108 get_user(params.period_step, &src->period_step) ||
109 get_user(params.sleep_min, &src->sleep_min) ||
110 get_user(params.avail_min, &src->avail_min) ||
111 get_user(params.xfer_align, &src->xfer_align) ||
112 get_user(params.start_threshold, &src->start_threshold) ||
113 get_user(params.stop_threshold, &src->stop_threshold) ||
114 get_user(params.silence_threshold, &src->silence_threshold) ||
e58c295c
TI		 115 get_user(params.silence_size, &src->silence_size) ||
116 get_user(params.tstamp_type, &src->tstamp_type) ||
117 get_user(params.proto, &src->proto))
1da177e4 118 return -EFAULT;
b2711310
TI		 119 /*
120 * Check silent_size parameter. Since we have 64bit boundary,
121 * silence_size must be compared with the 32bit boundary.
122 */
123 boundary = recalculate_boundary(substream->runtime);
124 if (boundary && params.silence_size >= boundary)
125 params.silence_size = substream->runtime->boundary;
1da177e4
LT		 126 err = snd_pcm_sw_params(substream, &params);
127 if (err < 0)
128 return err;
7153a558 129 if (boundary && put_user(boundary, &src->boundary))
1da177e4
LT		 130 return -EFAULT;
131 return err;
132}
133
877211f5 134struct snd_pcm_channel_info32 {
1da177e4
LT		 135 u32 channel;
136 u32 offset;
137 u32 first;
138 u32 step;
139};
140
877211f5
TI		 141static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream,
142 struct snd_pcm_channel_info32 __user *src)
1da177e4 143{
877211f5 144 struct snd_pcm_channel_info info;
1da177e4
LT		 145 int err;
146
147 if (get_user(info.channel, &src->channel) ||
148 get_user(info.offset, &src->offset) ||
149 get_user(info.first, &src->first) ||
150 get_user(info.step, &src->step))
151 return -EFAULT;
152 err = snd_pcm_channel_info(substream, &info);
153 if (err < 0)
154 return err;
155 if (put_user(info.channel, &src->channel) ||
156 put_user(info.offset, &src->offset) ||
157 put_user(info.first, &src->first) ||
158 put_user(info.step, &src->step))
159 return -EFAULT;
160 return err;
161}
162
513ace79
TI		 163#ifdef CONFIG_X86_X32
164/* X32 ABI has the same struct as x86-64 for snd_pcm_channel_info */
165static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream,
166 struct snd_pcm_channel_info __user *src);
167#define snd_pcm_ioctl_channel_info_x32(s, p) \
168 snd_pcm_channel_info_user(s, p)
169#endif /* CONFIG_X86_X32 */
170
877211f5 171struct snd_pcm_status32 {
1da177e4
LT		 172 s32 state;
173 struct compat_timespec trigger_tstamp;
174 struct compat_timespec tstamp;
175 u32 appl_ptr;
176 u32 hw_ptr;
177 s32 delay;
178 u32 avail;
179 u32 avail_max;
180 u32 overrange;
181 s32 suspended_state;
5442a73a 182 u32 audio_tstamp_data;
4eeaaeae 183 struct compat_timespec audio_tstamp;
5442a73a
PLB		 184 struct compat_timespec driver_tstamp;
185 u32 audio_tstamp_accuracy;
186 unsigned char reserved[52-2*sizeof(struct compat_timespec)];
1da177e4
LT		 187} __attribute__((packed));
188
189
877211f5 190static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
5442a73a
PLB		 191 struct snd_pcm_status32 __user *src,
192 bool ext)
1da177e4 193{
877211f5 194 struct snd_pcm_status status;
1da177e4
LT		 195 int err;
196
5442a73a
PLB		 197 memset(&status, 0, sizeof(status));
198 /*
199 * with extension, parameters are read/write,
200 * get audio_tstamp_data from user,
201 * ignore rest of status structure
202 */
203 if (ext && get_user(status.audio_tstamp_data,
204 (u32 __user *)(&src->audio_tstamp_data)))
205 return -EFAULT;
1da177e4
LT		 206 err = snd_pcm_status(substream, &status);
207 if (err < 0)
208 return err;
209
317168d0
TI		 210 if (clear_user(src, sizeof(*src)))
211 return -EFAULT;
1da177e4 212 if (put_user(status.state, &src->state) ||
4eeaaeae
PLB		 213 compat_put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
214 compat_put_timespec(&status.tstamp, &src->tstamp) ||
1da177e4
LT		 215 put_user(status.appl_ptr, &src->appl_ptr) ||
216 put_user(status.hw_ptr, &src->hw_ptr) ||
217 put_user(status.delay, &src->delay) ||
218 put_user(status.avail, &src->avail) ||
219 put_user(status.avail_max, &src->avail_max) ||
220 put_user(status.overrange, &src->overrange) ||
4eeaaeae 221 put_user(status.suspended_state, &src->suspended_state) ||
5442a73a
PLB		 222 put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
223 compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
224 compat_put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
225 put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
1da177e4
LT		 226 return -EFAULT;
227
228 return err;
229}
230
513ace79
TI		 231#ifdef CONFIG_X86_X32
232/* X32 ABI has 64bit timespec and 64bit alignment */
233struct snd_pcm_status_x32 {
234 s32 state;
235 u32 rsvd; /* alignment */
236 struct timespec trigger_tstamp;
237 struct timespec tstamp;
238 u32 appl_ptr;
239 u32 hw_ptr;
240 s32 delay;
241 u32 avail;
242 u32 avail_max;
243 u32 overrange;
244 s32 suspended_state;
245 u32 audio_tstamp_data;
246 struct timespec audio_tstamp;
247 struct timespec driver_tstamp;
248 u32 audio_tstamp_accuracy;
249 unsigned char reserved[52-2*sizeof(struct timespec)];
250} __packed;
251
252#define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
253
254static int snd_pcm_status_user_x32(struct snd_pcm_substream *substream,
255 struct snd_pcm_status_x32 __user *src,
256 bool ext)
257{
258 struct snd_pcm_status status;
259 int err;
260
261 memset(&status, 0, sizeof(status));
262 /*
263 * with extension, parameters are read/write,
264 * get audio_tstamp_data from user,
265 * ignore rest of status structure
266 */
267 if (ext && get_user(status.audio_tstamp_data,
268 (u32 __user *)(&src->audio_tstamp_data)))
269 return -EFAULT;
270 err = snd_pcm_status(substream, &status);
271 if (err < 0)
272 return err;
273
274 if (clear_user(src, sizeof(*src)))
275 return -EFAULT;
276 if (put_user(status.state, &src->state) ||
277 put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
278 put_timespec(&status.tstamp, &src->tstamp) ||
279 put_user(status.appl_ptr, &src->appl_ptr) ||
280 put_user(status.hw_ptr, &src->hw_ptr) ||
281 put_user(status.delay, &src->delay) ||
282 put_user(status.avail, &src->avail) ||
283 put_user(status.avail_max, &src->avail_max) ||
284 put_user(status.overrange, &src->overrange) ||
285 put_user(status.suspended_state, &src->suspended_state) ||
286 put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
287 put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
288 put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
289 put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
290 return -EFAULT;
291
292 return err;
293}
294#endif /* CONFIG_X86_X32 */
295
1da177e4 296/* both for HW_PARAMS and HW_REFINE */
877211f5 297static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
1da177e4 298 int refine,
877211f5 299 struct snd_pcm_hw_params32 __user *data32)
1da177e4 300{
877211f5
TI		 301 struct snd_pcm_hw_params *data;
302 struct snd_pcm_runtime *runtime;
1da177e4
LT		 303 int err;
304
305 if (! (runtime = substream->runtime))
306 return -ENOTTY;
307
43c54b8c
NB		 308 data = kmalloc(sizeof(*data), GFP_KERNEL);
309 if (!data)
310 return -ENOMEM;
311
312 /* only fifo_size (RO from userspace) is different, so just copy all */
313 if (copy_from_user(data, data32, sizeof(*data32))) {
314 err = -EFAULT;
315 goto error;
316 }
ef44a1ec 317
1da177e4
LT		 318 if (refine)
319 err = snd_pcm_hw_refine(substream, data);
320 else
321 err = snd_pcm_hw_params(substream, data);
322 if (err < 0)
323 goto error;
324 if (copy_to_user(data32, data, sizeof(*data32)) ||
325 put_user(data->fifo_size, &data32->fifo_size)) {
326 err = -EFAULT;
327 goto error;
328 }
329
7153a558
TI		 330 if (! refine) {
331 unsigned int new_boundary = recalculate_boundary(runtime);
332 if (new_boundary)
333 runtime->boundary = new_boundary;
334 }
1da177e4
LT		 335 error:
336 kfree(data);
337 return err;
338}
339
340
341/*
342 */
877211f5 343struct snd_xferi32 {
1da177e4
LT		 344 s32 result;
345 u32 buf;
346 u32 frames;
347};
348
877211f5
TI		 349static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream,
350 int dir, struct snd_xferi32 __user *data32)
1da177e4
LT		 351{
352 compat_caddr_t buf;
353 u32 frames;
354 int err;
355
356 if (! substream->runtime)
357 return -ENOTTY;
358 if (substream->stream != dir)
359 return -EINVAL;
360 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
361 return -EBADFD;
362
363 if (get_user(buf, &data32->buf) ||
364 get_user(frames, &data32->frames))
365 return -EFAULT;
366
367 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
368 err = snd_pcm_lib_write(substream, compat_ptr(buf), frames);
369 else
370 err = snd_pcm_lib_read(substream, compat_ptr(buf), frames);
371 if (err < 0)
372 return err;
373 /* copy the result */
374 if (put_user(err, &data32->result))
375 return -EFAULT;
376 return 0;
377}
378
379
380/* snd_xfern needs remapping of bufs */
877211f5 381struct snd_xfern32 {
1da177e4
LT		 382 s32 result;
383 u32 bufs; /* this is void **; */
384 u32 frames;
385};
386
387/*
388 * xfern ioctl nees to copy (up to) 128 pointers on stack.
389 * although we may pass the copied pointers through f_op->ioctl, but the ioctl
390 * handler there expands again the same 128 pointers on stack, so it is better
391 * to handle the function (calling pcm_readv/writev) directly in this handler.
392 */
877211f5
TI		 393static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
394 int dir, struct snd_xfern32 __user *data32)
1da177e4
LT		 395{
396 compat_caddr_t buf;
397 compat_caddr_t __user *bufptr;
398 u32 frames;
399 void __user **bufs;
400 int err, ch, i;
401
402 if (! substream->runtime)
403 return -ENOTTY;
404 if (substream->stream != dir)
405 return -EINVAL;
f13876e2
TI		 406 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
407 return -EBADFD;
1da177e4
LT		 408
409 if ((ch = substream->runtime->channels) > 128)
410 return -EINVAL;
411 if (get_user(buf, &data32->bufs) ||
412 get_user(frames, &data32->frames))
413 return -EFAULT;
414 bufptr = compat_ptr(buf);
6da2ec56 415 bufs = kmalloc_array(ch, sizeof(void __user *), GFP_KERNEL);
1da177e4
LT		 416 if (bufs == NULL)
417 return -ENOMEM;
418 for (i = 0; i < ch; i++) {
419 u32 ptr;
420 if (get_user(ptr, bufptr)) {
421 kfree(bufs);
422 return -EFAULT;
423 }
ca9380fd 424 bufs[i] = compat_ptr(ptr);
1da177e4
LT		 425 bufptr++;
426 }
427 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
428 err = snd_pcm_lib_writev(substream, bufs, frames);
429 else
430 err = snd_pcm_lib_readv(substream, bufs, frames);
431 if (err >= 0) {
432 if (put_user(err, &data32->result))
433 err = -EFAULT;
434 }
435 kfree(bufs);
436 return err;
437}
438
439
877211f5 440struct snd_pcm_mmap_status32 {
1da177e4
LT		 441 s32 state;
442 s32 pad1;
443 u32 hw_ptr;
444 struct compat_timespec tstamp;
445 s32 suspended_state;
4eeaaeae 446 struct compat_timespec audio_tstamp;
1da177e4
LT		 447} __attribute__((packed));
448
877211f5 449struct snd_pcm_mmap_control32 {
1da177e4
LT		 450 u32 appl_ptr;
451 u32 avail_min;
452};
453
877211f5 454struct snd_pcm_sync_ptr32 {
1da177e4
LT		 455 u32 flags;
456 union {
877211f5 457 struct snd_pcm_mmap_status32 status;
1da177e4
LT		 458 unsigned char reserved[64];
459 } s;
460 union {
877211f5 461 struct snd_pcm_mmap_control32 control;
1da177e4
LT		 462 unsigned char reserved[64];
463 } c;
464} __attribute__((packed));
465
877211f5
TI		 466static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
467 struct snd_pcm_sync_ptr32 __user *src)
1da177e4 468{
877211f5
TI		 469 struct snd_pcm_runtime *runtime = substream->runtime;
470 volatile struct snd_pcm_mmap_status *status;
471 volatile struct snd_pcm_mmap_control *control;
1da177e4 472 u32 sflags;
877211f5
TI		 473 struct snd_pcm_mmap_control scontrol;
474 struct snd_pcm_mmap_status sstatus;
b2711310 475 snd_pcm_uframes_t boundary;
1da177e4
LT		 476 int err;
477
7eaa943c
TI		 478 if (snd_BUG_ON(!runtime))
479 return -EINVAL;
1da177e4
LT		 480
481 if (get_user(sflags, &src->flags) ||
482 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
483 get_user(scontrol.avail_min, &src->c.control.avail_min))
484 return -EFAULT;
485 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
486 err = snd_pcm_hwsync(substream);
487 if (err < 0)
488 return err;
489 }
490 status = runtime->status;
491 control = runtime->control;
b2711310 492 boundary = recalculate_boundary(runtime);
7153a558
TI		 493 if (! boundary)
494 boundary = 0x7fffffff;
1da177e4 495 snd_pcm_stream_lock_irq(substream);
b2711310 496 /* FIXME: we should consider the boundary for the sync from app */
1da177e4
LT		 497 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
498 control->appl_ptr = scontrol.appl_ptr;
499 else
b2711310 500 scontrol.appl_ptr = control->appl_ptr % boundary;
1da177e4
LT		 501 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
502 control->avail_min = scontrol.avail_min;
503 else
504 scontrol.avail_min = control->avail_min;
505 sstatus.state = status->state;
b2711310 506 sstatus.hw_ptr = status->hw_ptr % boundary;
1da177e4
LT		 507 sstatus.tstamp = status->tstamp;
508 sstatus.suspended_state = status->suspended_state;
4eeaaeae 509 sstatus.audio_tstamp = status->audio_tstamp;
1da177e4
LT		 510 snd_pcm_stream_unlock_irq(substream);
511 if (put_user(sstatus.state, &src->s.status.state) ||
512 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
4eeaaeae 513 compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
1da177e4 514 put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
4eeaaeae
PLB		 515 compat_put_timespec(&sstatus.audio_tstamp,
516 &src->s.status.audio_tstamp) ||
1da177e4
LT		 517 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
518 put_user(scontrol.avail_min, &src->c.control.avail_min))
519 return -EFAULT;
520
521 return 0;
522}
523
513ace79
TI		 524#ifdef CONFIG_X86_X32
525/* X32 ABI has 64bit timespec and 64bit alignment */
526struct snd_pcm_mmap_status_x32 {
527 s32 state;
528 s32 pad1;
529 u32 hw_ptr;
530 u32 pad2; /* alignment */
531 struct timespec tstamp;
532 s32 suspended_state;
c9adcdbc 533 s32 pad3;
513ace79
TI		 534 struct timespec audio_tstamp;
535} __packed;
536
537struct snd_pcm_mmap_control_x32 {
538 u32 appl_ptr;
539 u32 avail_min;
540};
541
542struct snd_pcm_sync_ptr_x32 {
543 u32 flags;
544 u32 rsvd; /* alignment */
545 union {
546 struct snd_pcm_mmap_status_x32 status;
547 unsigned char reserved[64];
548 } s;
549 union {
550 struct snd_pcm_mmap_control_x32 control;
551 unsigned char reserved[64];
552 } c;
553} __packed;
554
555static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
556 struct snd_pcm_sync_ptr_x32 __user *src)
557{
558 struct snd_pcm_runtime *runtime = substream->runtime;
559 volatile struct snd_pcm_mmap_status *status;
560 volatile struct snd_pcm_mmap_control *control;
561 u32 sflags;
562 struct snd_pcm_mmap_control scontrol;
563 struct snd_pcm_mmap_status sstatus;
564 snd_pcm_uframes_t boundary;
565 int err;
566
567 if (snd_BUG_ON(!runtime))
568 return -EINVAL;
569
570 if (get_user(sflags, &src->flags) ||
571 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
572 get_user(scontrol.avail_min, &src->c.control.avail_min))
573 return -EFAULT;
574 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
575 err = snd_pcm_hwsync(substream);
576 if (err < 0)
577 return err;
578 }
579 status = runtime->status;
580 control = runtime->control;
581 boundary = recalculate_boundary(runtime);
582 if (!boundary)
583 boundary = 0x7fffffff;
584 snd_pcm_stream_lock_irq(substream);
585 /* FIXME: we should consider the boundary for the sync from app */
586 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
587 control->appl_ptr = scontrol.appl_ptr;
588 else
589 scontrol.appl_ptr = control->appl_ptr % boundary;
590 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
591 control->avail_min = scontrol.avail_min;
592 else
593 scontrol.avail_min = control->avail_min;
594 sstatus.state = status->state;
595 sstatus.hw_ptr = status->hw_ptr % boundary;
596 sstatus.tstamp = status->tstamp;
597 sstatus.suspended_state = status->suspended_state;
598 sstatus.audio_tstamp = status->audio_tstamp;
599 snd_pcm_stream_unlock_irq(substream);
600 if (put_user(sstatus.state, &src->s.status.state) ||
601 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
602 put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
603 put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
604 put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) ||
605 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
606 put_user(scontrol.avail_min, &src->c.control.avail_min))
607 return -EFAULT;
608
609 return 0;
610}
611#endif /* CONFIG_X86_X32 */
1da177e4
LT		 612
613/*
614 */
615enum {
877211f5
TI		 616 SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
617 SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
618 SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
619 SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32),
5442a73a 620 SNDRV_PCM_IOCTL_STATUS_EXT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
1da177e4 621 SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
877211f5 622 SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
1da177e4
LT		 623 SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
624 SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32),
877211f5
TI		 625 SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32),
626 SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
627 SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
628 SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
629 SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
513ace79
TI		 630#ifdef CONFIG_X86_X32
631 SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
632 SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32),
633 SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32),
634 SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
635#endif /* CONFIG_X86_X32 */
1da177e4
LT		 636};
637
638static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
639{
877211f5
TI		 640 struct snd_pcm_file *pcm_file;
641 struct snd_pcm_substream *substream;
1da177e4
LT		 642 void __user *argp = compat_ptr(arg);
643
644 pcm_file = file->private_data;
645 if (! pcm_file)
646 return -ENOTTY;
647 substream = pcm_file->substream;
648 if (! substream)
649 return -ENOTTY;
650
651 /*
652 * When PCM is used on 32bit mode, we need to disable
653 * mmap of PCM status/control records because of the size
654 * incompatibility.
655 */
548a648b 656 pcm_file->no_compat_mmap = 1;
1da177e4
LT		 657
658 switch (cmd) {
659 case SNDRV_PCM_IOCTL_PVERSION:
660 case SNDRV_PCM_IOCTL_INFO:
5a7f2619 661 case SNDRV_PCM_IOCTL_TSTAMP:
6b587ef9 662 case SNDRV_PCM_IOCTL_TTSTAMP:
4b671f57 663 case SNDRV_PCM_IOCTL_USER_PVERSION:
1da177e4
LT		 664 case SNDRV_PCM_IOCTL_HWSYNC:
665 case SNDRV_PCM_IOCTL_PREPARE:
666 case SNDRV_PCM_IOCTL_RESET:
667 case SNDRV_PCM_IOCTL_START:
668 case SNDRV_PCM_IOCTL_DROP:
669 case SNDRV_PCM_IOCTL_DRAIN:
670 case SNDRV_PCM_IOCTL_PAUSE:
671 case SNDRV_PCM_IOCTL_HW_FREE:
672 case SNDRV_PCM_IOCTL_RESUME:
673 case SNDRV_PCM_IOCTL_XRUN:
674 case SNDRV_PCM_IOCTL_LINK:
675 case SNDRV_PCM_IOCTL_UNLINK:
67616fed 676 return snd_pcm_common_ioctl(file, substream, cmd, argp);
1da177e4
LT		 677 case SNDRV_PCM_IOCTL_HW_REFINE32:
678 return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
679 case SNDRV_PCM_IOCTL_HW_PARAMS32:
680 return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
681 case SNDRV_PCM_IOCTL_SW_PARAMS32:
682 return snd_pcm_ioctl_sw_params_compat(substream, argp);
683 case SNDRV_PCM_IOCTL_STATUS32:
5442a73a
PLB		 684 return snd_pcm_status_user_compat(substream, argp, false);
685 case SNDRV_PCM_IOCTL_STATUS_EXT32:
686 return snd_pcm_status_user_compat(substream, argp, true);
1da177e4
LT		 687 case SNDRV_PCM_IOCTL_SYNC_PTR32:
688 return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
689 case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
690 return snd_pcm_ioctl_channel_info_compat(substream, argp);
691 case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
692 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
693 case SNDRV_PCM_IOCTL_READI_FRAMES32:
694 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
695 case SNDRV_PCM_IOCTL_WRITEN_FRAMES32:
696 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
697 case SNDRV_PCM_IOCTL_READN_FRAMES32:
698 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
699 case SNDRV_PCM_IOCTL_DELAY32:
700 return snd_pcm_ioctl_delay_compat(substream, argp);
701 case SNDRV_PCM_IOCTL_REWIND32:
702 return snd_pcm_ioctl_rewind_compat(substream, argp);
703 case SNDRV_PCM_IOCTL_FORWARD32:
704 return snd_pcm_ioctl_forward_compat(substream, argp);
513ace79
TI		 705#ifdef CONFIG_X86_X32
706 case SNDRV_PCM_IOCTL_STATUS_X32:
707 return snd_pcm_status_user_x32(substream, argp, false);
708 case SNDRV_PCM_IOCTL_STATUS_EXT_X32:
709 return snd_pcm_status_user_x32(substream, argp, true);
710 case SNDRV_PCM_IOCTL_SYNC_PTR_X32:
711 return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
712 case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
713 return snd_pcm_ioctl_channel_info_x32(substream, argp);
714#endif /* CONFIG_X86_X32 */
1da177e4
LT		 715 }
716
717 return -ENOIOCTLCMD;
718}
Linux 6.x block layer and io_uring tree(s)