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[linux-2.6-block.git] / sound / core / pcm_compat.c
CommitLineData
1da177e4
LT		 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>
5a0e3ad6 24#include <linux/slab.h>
1da177e4 25
877211f5 26static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 27 s32 __user *src)
28{
29 snd_pcm_sframes_t delay;
30 mm_segment_t fs;
31 int err;
32
33 fs = snd_enter_user();
34 err = snd_pcm_delay(substream, &delay);
35 snd_leave_user(fs);
36 if (err < 0)
37 return err;
38 if (put_user(delay, src))
39 return -EFAULT;
40 return err;
41}
42
877211f5 43static int snd_pcm_ioctl_rewind_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 44 u32 __user *src)
45{
46 snd_pcm_uframes_t frames;
47 int err;
48
49 if (get_user(frames, src))
50 return -EFAULT;
51 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
52 err = snd_pcm_playback_rewind(substream, frames);
53 else
54 err = snd_pcm_capture_rewind(substream, frames);
55 if (put_user(err, src))
56 return -EFAULT;
57 return err < 0 ? err : 0;
58}
59
877211f5 60static int snd_pcm_ioctl_forward_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 61 u32 __user *src)
62{
63 snd_pcm_uframes_t frames;
64 int err;
65
66 if (get_user(frames, src))
67 return -EFAULT;
68 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
69 err = snd_pcm_playback_forward(substream, frames);
70 else
71 err = snd_pcm_capture_forward(substream, frames);
72 if (put_user(err, src))
73 return -EFAULT;
74 return err < 0 ? err : 0;
75}
76
877211f5 77struct snd_pcm_hw_params32 {
1da177e4 78 u32 flags;
877211f5
TI		 79 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; /* this must be identical */
80 struct snd_mask mres[5]; /* reserved masks */
81 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
82 struct snd_interval ires[9]; /* reserved intervals */
1da177e4
LT		 83 u32 rmask;
84 u32 cmask;
85 u32 info;
86 u32 msbits;
87 u32 rate_num;
88 u32 rate_den;
89 u32 fifo_size;
90 unsigned char reserved[64];
91};
92
877211f5 93struct snd_pcm_sw_params32 {
1da177e4
LT		 94 s32 tstamp_mode;
95 u32 period_step;
96 u32 sleep_min;
97 u32 avail_min;
98 u32 xfer_align;
99 u32 start_threshold;
100 u32 stop_threshold;
101 u32 silence_threshold;
102 u32 silence_size;
103 u32 boundary;
e58c295c
TI		 104 u32 proto;
105 u32 tstamp_type;
106 unsigned char reserved[56];
1da177e4
LT		 107};
108
b2711310 109/* recalcuate the boundary within 32bit */
877211f5 110static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
b2711310
TI		 111{
112 snd_pcm_uframes_t boundary;
113
114 if (! runtime->buffer_size)
115 return 0;
116 boundary = runtime->buffer_size;
117 while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
118 boundary *= 2;
119 return boundary;
120}
121
877211f5
TI		 122static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
123 struct snd_pcm_sw_params32 __user *src)
1da177e4 124{
877211f5 125 struct snd_pcm_sw_params params;
b2711310 126 snd_pcm_uframes_t boundary;
1da177e4
LT		 127 int err;
128
129 memset(&params, 0, sizeof(params));
130 if (get_user(params.tstamp_mode, &src->tstamp_mode) ||
131 get_user(params.period_step, &src->period_step) ||
132 get_user(params.sleep_min, &src->sleep_min) ||
133 get_user(params.avail_min, &src->avail_min) ||
134 get_user(params.xfer_align, &src->xfer_align) ||
135 get_user(params.start_threshold, &src->start_threshold) ||
136 get_user(params.stop_threshold, &src->stop_threshold) ||
137 get_user(params.silence_threshold, &src->silence_threshold) ||
e58c295c
TI		 138 get_user(params.silence_size, &src->silence_size) ||
139 get_user(params.tstamp_type, &src->tstamp_type) ||
140 get_user(params.proto, &src->proto))
1da177e4 141 return -EFAULT;
b2711310
TI		 142 /*
143 * Check silent_size parameter. Since we have 64bit boundary,
144 * silence_size must be compared with the 32bit boundary.
145 */
146 boundary = recalculate_boundary(substream->runtime);
147 if (boundary && params.silence_size >= boundary)
148 params.silence_size = substream->runtime->boundary;
1da177e4
LT		 149 err = snd_pcm_sw_params(substream, &params);
150 if (err < 0)
151 return err;
7153a558 152 if (boundary && put_user(boundary, &src->boundary))
1da177e4
LT		 153 return -EFAULT;
154 return err;
155}
156
877211f5 157struct snd_pcm_channel_info32 {
1da177e4
LT		 158 u32 channel;
159 u32 offset;
160 u32 first;
161 u32 step;
162};
163
877211f5
TI		 164static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream,
165 struct snd_pcm_channel_info32 __user *src)
1da177e4 166{
877211f5 167 struct snd_pcm_channel_info info;
1da177e4
LT		 168 int err;
169
170 if (get_user(info.channel, &src->channel) ||
171 get_user(info.offset, &src->offset) ||
172 get_user(info.first, &src->first) ||
173 get_user(info.step, &src->step))
174 return -EFAULT;
175 err = snd_pcm_channel_info(substream, &info);
176 if (err < 0)
177 return err;
178 if (put_user(info.channel, &src->channel) ||
179 put_user(info.offset, &src->offset) ||
180 put_user(info.first, &src->first) ||
181 put_user(info.step, &src->step))
182 return -EFAULT;
183 return err;
184}
185
513ace79
TI		 186#ifdef CONFIG_X86_X32
187/* X32 ABI has the same struct as x86-64 for snd_pcm_channel_info */
188static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream,
189 struct snd_pcm_channel_info __user *src);
190#define snd_pcm_ioctl_channel_info_x32(s, p) \
191 snd_pcm_channel_info_user(s, p)
192#endif /* CONFIG_X86_X32 */
193
877211f5 194struct snd_pcm_status32 {
1da177e4
LT		 195 s32 state;
196 struct compat_timespec trigger_tstamp;
197 struct compat_timespec tstamp;
198 u32 appl_ptr;
199 u32 hw_ptr;
200 s32 delay;
201 u32 avail;
202 u32 avail_max;
203 u32 overrange;
204 s32 suspended_state;
5442a73a 205 u32 audio_tstamp_data;
4eeaaeae 206 struct compat_timespec audio_tstamp;
5442a73a
PLB		 207 struct compat_timespec driver_tstamp;
208 u32 audio_tstamp_accuracy;
209 unsigned char reserved[52-2*sizeof(struct compat_timespec)];
1da177e4
LT		 210} __attribute__((packed));
211
212
877211f5 213static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
5442a73a
PLB		 214 struct snd_pcm_status32 __user *src,
215 bool ext)
1da177e4 216{
877211f5 217 struct snd_pcm_status status;
1da177e4
LT		 218 int err;
219
5442a73a
PLB		 220 memset(&status, 0, sizeof(status));
221 /*
222 * with extension, parameters are read/write,
223 * get audio_tstamp_data from user,
224 * ignore rest of status structure
225 */
226 if (ext && get_user(status.audio_tstamp_data,
227 (u32 __user *)(&src->audio_tstamp_data)))
228 return -EFAULT;
1da177e4
LT		 229 err = snd_pcm_status(substream, &status);
230 if (err < 0)
231 return err;
232
317168d0
TI		 233 if (clear_user(src, sizeof(*src)))
234 return -EFAULT;
1da177e4 235 if (put_user(status.state, &src->state) ||
4eeaaeae
PLB		 236 compat_put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
237 compat_put_timespec(&status.tstamp, &src->tstamp) ||
1da177e4
LT		 238 put_user(status.appl_ptr, &src->appl_ptr) ||
239 put_user(status.hw_ptr, &src->hw_ptr) ||
240 put_user(status.delay, &src->delay) ||
241 put_user(status.avail, &src->avail) ||
242 put_user(status.avail_max, &src->avail_max) ||
243 put_user(status.overrange, &src->overrange) ||
4eeaaeae 244 put_user(status.suspended_state, &src->suspended_state) ||
5442a73a
PLB		 245 put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
246 compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
247 compat_put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
248 put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
1da177e4
LT		 249 return -EFAULT;
250
251 return err;
252}
253
513ace79
TI		 254#ifdef CONFIG_X86_X32
255/* X32 ABI has 64bit timespec and 64bit alignment */
256struct snd_pcm_status_x32 {
257 s32 state;
258 u32 rsvd; /* alignment */
259 struct timespec trigger_tstamp;
260 struct timespec tstamp;
261 u32 appl_ptr;
262 u32 hw_ptr;
263 s32 delay;
264 u32 avail;
265 u32 avail_max;
266 u32 overrange;
267 s32 suspended_state;
268 u32 audio_tstamp_data;
269 struct timespec audio_tstamp;
270 struct timespec driver_tstamp;
271 u32 audio_tstamp_accuracy;
272 unsigned char reserved[52-2*sizeof(struct timespec)];
273} __packed;
274
275#define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
276
277static int snd_pcm_status_user_x32(struct snd_pcm_substream *substream,
278 struct snd_pcm_status_x32 __user *src,
279 bool ext)
280{
281 struct snd_pcm_status status;
282 int err;
283
284 memset(&status, 0, sizeof(status));
285 /*
286 * with extension, parameters are read/write,
287 * get audio_tstamp_data from user,
288 * ignore rest of status structure
289 */
290 if (ext && get_user(status.audio_tstamp_data,
291 (u32 __user *)(&src->audio_tstamp_data)))
292 return -EFAULT;
293 err = snd_pcm_status(substream, &status);
294 if (err < 0)
295 return err;
296
297 if (clear_user(src, sizeof(*src)))
298 return -EFAULT;
299 if (put_user(status.state, &src->state) ||
300 put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
301 put_timespec(&status.tstamp, &src->tstamp) ||
302 put_user(status.appl_ptr, &src->appl_ptr) ||
303 put_user(status.hw_ptr, &src->hw_ptr) ||
304 put_user(status.delay, &src->delay) ||
305 put_user(status.avail, &src->avail) ||
306 put_user(status.avail_max, &src->avail_max) ||
307 put_user(status.overrange, &src->overrange) ||
308 put_user(status.suspended_state, &src->suspended_state) ||
309 put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
310 put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
311 put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
312 put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
313 return -EFAULT;
314
315 return err;
316}
317#endif /* CONFIG_X86_X32 */
318
1da177e4 319/* both for HW_PARAMS and HW_REFINE */
877211f5 320static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
1da177e4 321 int refine,
877211f5 322 struct snd_pcm_hw_params32 __user *data32)
1da177e4 323{
877211f5
TI		 324 struct snd_pcm_hw_params *data;
325 struct snd_pcm_runtime *runtime;
1da177e4
LT		 326 int err;
327
328 if (! (runtime = substream->runtime))
329 return -ENOTTY;
330
43c54b8c
NB		 331 data = kmalloc(sizeof(*data), GFP_KERNEL);
332 if (!data)
333 return -ENOMEM;
334
335 /* only fifo_size (RO from userspace) is different, so just copy all */
336 if (copy_from_user(data, data32, sizeof(*data32))) {
337 err = -EFAULT;
338 goto error;
339 }
ef44a1ec 340
1da177e4
LT		 341 if (refine)
342 err = snd_pcm_hw_refine(substream, data);
343 else
344 err = snd_pcm_hw_params(substream, data);
345 if (err < 0)
346 goto error;
347 if (copy_to_user(data32, data, sizeof(*data32)) ||
348 put_user(data->fifo_size, &data32->fifo_size)) {
349 err = -EFAULT;
350 goto error;
351 }
352
7153a558
TI		 353 if (! refine) {
354 unsigned int new_boundary = recalculate_boundary(runtime);
355 if (new_boundary)
356 runtime->boundary = new_boundary;
357 }
1da177e4
LT		 358 error:
359 kfree(data);
360 return err;
361}
362
363
364/*
365 */
877211f5 366struct snd_xferi32 {
1da177e4
LT		 367 s32 result;
368 u32 buf;
369 u32 frames;
370};
371
877211f5
TI		 372static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream,
373 int dir, struct snd_xferi32 __user *data32)
1da177e4
LT		 374{
375 compat_caddr_t buf;
376 u32 frames;
377 int err;
378
379 if (! substream->runtime)
380 return -ENOTTY;
381 if (substream->stream != dir)
382 return -EINVAL;
383 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
384 return -EBADFD;
385
386 if (get_user(buf, &data32->buf) ||
387 get_user(frames, &data32->frames))
388 return -EFAULT;
389
390 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
391 err = snd_pcm_lib_write(substream, compat_ptr(buf), frames);
392 else
393 err = snd_pcm_lib_read(substream, compat_ptr(buf), frames);
394 if (err < 0)
395 return err;
396 /* copy the result */
397 if (put_user(err, &data32->result))
398 return -EFAULT;
399 return 0;
400}
401
402
403/* snd_xfern needs remapping of bufs */
877211f5 404struct snd_xfern32 {
1da177e4
LT		 405 s32 result;
406 u32 bufs; /* this is void **; */
407 u32 frames;
408};
409
410/*
411 * xfern ioctl nees to copy (up to) 128 pointers on stack.
412 * although we may pass the copied pointers through f_op->ioctl, but the ioctl
413 * handler there expands again the same 128 pointers on stack, so it is better
414 * to handle the function (calling pcm_readv/writev) directly in this handler.
415 */
877211f5
TI		 416static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
417 int dir, struct snd_xfern32 __user *data32)
1da177e4
LT		 418{
419 compat_caddr_t buf;
420 compat_caddr_t __user *bufptr;
421 u32 frames;
422 void __user **bufs;
423 int err, ch, i;
424
425 if (! substream->runtime)
426 return -ENOTTY;
427 if (substream->stream != dir)
428 return -EINVAL;
429
430 if ((ch = substream->runtime->channels) > 128)
431 return -EINVAL;
432 if (get_user(buf, &data32->bufs) ||
433 get_user(frames, &data32->frames))
434 return -EFAULT;
435 bufptr = compat_ptr(buf);
436 bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL);
437 if (bufs == NULL)
438 return -ENOMEM;
439 for (i = 0; i < ch; i++) {
440 u32 ptr;
441 if (get_user(ptr, bufptr)) {
442 kfree(bufs);
443 return -EFAULT;
444 }
ca9380fd 445 bufs[i] = compat_ptr(ptr);
1da177e4
LT		 446 bufptr++;
447 }
448 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
449 err = snd_pcm_lib_writev(substream, bufs, frames);
450 else
451 err = snd_pcm_lib_readv(substream, bufs, frames);
452 if (err >= 0) {
453 if (put_user(err, &data32->result))
454 err = -EFAULT;
455 }
456 kfree(bufs);
457 return err;
458}
459
460
877211f5 461struct snd_pcm_mmap_status32 {
1da177e4
LT		 462 s32 state;
463 s32 pad1;
464 u32 hw_ptr;
465 struct compat_timespec tstamp;
466 s32 suspended_state;
4eeaaeae 467 struct compat_timespec audio_tstamp;
1da177e4
LT		 468} __attribute__((packed));
469
877211f5 470struct snd_pcm_mmap_control32 {
1da177e4
LT		 471 u32 appl_ptr;
472 u32 avail_min;
473};
474
877211f5 475struct snd_pcm_sync_ptr32 {
1da177e4
LT		 476 u32 flags;
477 union {
877211f5 478 struct snd_pcm_mmap_status32 status;
1da177e4
LT		 479 unsigned char reserved[64];
480 } s;
481 union {
877211f5 482 struct snd_pcm_mmap_control32 control;
1da177e4
LT		 483 unsigned char reserved[64];
484 } c;
485} __attribute__((packed));
486
877211f5
TI		 487static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
488 struct snd_pcm_sync_ptr32 __user *src)
1da177e4 489{
877211f5
TI		 490 struct snd_pcm_runtime *runtime = substream->runtime;
491 volatile struct snd_pcm_mmap_status *status;
492 volatile struct snd_pcm_mmap_control *control;
1da177e4 493 u32 sflags;
877211f5
TI		 494 struct snd_pcm_mmap_control scontrol;
495 struct snd_pcm_mmap_status sstatus;
b2711310 496 snd_pcm_uframes_t boundary;
1da177e4
LT		 497 int err;
498
7eaa943c
TI		 499 if (snd_BUG_ON(!runtime))
500 return -EINVAL;
1da177e4
LT		 501
502 if (get_user(sflags, &src->flags) ||
503 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
504 get_user(scontrol.avail_min, &src->c.control.avail_min))
505 return -EFAULT;
506 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
507 err = snd_pcm_hwsync(substream);
508 if (err < 0)
509 return err;
510 }
511 status = runtime->status;
512 control = runtime->control;
b2711310 513 boundary = recalculate_boundary(runtime);
7153a558
TI		 514 if (! boundary)
515 boundary = 0x7fffffff;
1da177e4 516 snd_pcm_stream_lock_irq(substream);
b2711310 517 /* FIXME: we should consider the boundary for the sync from app */
1da177e4
LT		 518 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
519 control->appl_ptr = scontrol.appl_ptr;
520 else
b2711310 521 scontrol.appl_ptr = control->appl_ptr % boundary;
1da177e4
LT		 522 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
523 control->avail_min = scontrol.avail_min;
524 else
525 scontrol.avail_min = control->avail_min;
526 sstatus.state = status->state;
b2711310 527 sstatus.hw_ptr = status->hw_ptr % boundary;
1da177e4
LT		 528 sstatus.tstamp = status->tstamp;
529 sstatus.suspended_state = status->suspended_state;
4eeaaeae 530 sstatus.audio_tstamp = status->audio_tstamp;
1da177e4
LT		 531 snd_pcm_stream_unlock_irq(substream);
532 if (put_user(sstatus.state, &src->s.status.state) ||
533 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
4eeaaeae 534 compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
1da177e4 535 put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
4eeaaeae
PLB		 536 compat_put_timespec(&sstatus.audio_tstamp,
537 &src->s.status.audio_tstamp) ||
1da177e4
LT		 538 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
539 put_user(scontrol.avail_min, &src->c.control.avail_min))
540 return -EFAULT;
541
542 return 0;
543}
544
513ace79
TI		 545#ifdef CONFIG_X86_X32
546/* X32 ABI has 64bit timespec and 64bit alignment */
547struct snd_pcm_mmap_status_x32 {
548 s32 state;
549 s32 pad1;
550 u32 hw_ptr;
551 u32 pad2; /* alignment */
552 struct timespec tstamp;
553 s32 suspended_state;
554 struct timespec audio_tstamp;
555} __packed;
556
557struct snd_pcm_mmap_control_x32 {
558 u32 appl_ptr;
559 u32 avail_min;
560};
561
562struct snd_pcm_sync_ptr_x32 {
563 u32 flags;
564 u32 rsvd; /* alignment */
565 union {
566 struct snd_pcm_mmap_status_x32 status;
567 unsigned char reserved[64];
568 } s;
569 union {
570 struct snd_pcm_mmap_control_x32 control;
571 unsigned char reserved[64];
572 } c;
573} __packed;
574
575static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
576 struct snd_pcm_sync_ptr_x32 __user *src)
577{
578 struct snd_pcm_runtime *runtime = substream->runtime;
579 volatile struct snd_pcm_mmap_status *status;
580 volatile struct snd_pcm_mmap_control *control;
581 u32 sflags;
582 struct snd_pcm_mmap_control scontrol;
583 struct snd_pcm_mmap_status sstatus;
584 snd_pcm_uframes_t boundary;
585 int err;
586
587 if (snd_BUG_ON(!runtime))
588 return -EINVAL;
589
590 if (get_user(sflags, &src->flags) ||
591 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
592 get_user(scontrol.avail_min, &src->c.control.avail_min))
593 return -EFAULT;
594 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
595 err = snd_pcm_hwsync(substream);
596 if (err < 0)
597 return err;
598 }
599 status = runtime->status;
600 control = runtime->control;
601 boundary = recalculate_boundary(runtime);
602 if (!boundary)
603 boundary = 0x7fffffff;
604 snd_pcm_stream_lock_irq(substream);
605 /* FIXME: we should consider the boundary for the sync from app */
606 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
607 control->appl_ptr = scontrol.appl_ptr;
608 else
609 scontrol.appl_ptr = control->appl_ptr % boundary;
610 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
611 control->avail_min = scontrol.avail_min;
612 else
613 scontrol.avail_min = control->avail_min;
614 sstatus.state = status->state;
615 sstatus.hw_ptr = status->hw_ptr % boundary;
616 sstatus.tstamp = status->tstamp;
617 sstatus.suspended_state = status->suspended_state;
618 sstatus.audio_tstamp = status->audio_tstamp;
619 snd_pcm_stream_unlock_irq(substream);
620 if (put_user(sstatus.state, &src->s.status.state) ||
621 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
622 put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
623 put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
624 put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) ||
625 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
626 put_user(scontrol.avail_min, &src->c.control.avail_min))
627 return -EFAULT;
628
629 return 0;
630}
631#endif /* CONFIG_X86_X32 */
1da177e4
LT		 632
633/*
634 */
635enum {
877211f5
TI		 636 SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
637 SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
638 SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
639 SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32),
5442a73a 640 SNDRV_PCM_IOCTL_STATUS_EXT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
1da177e4 641 SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
877211f5 642 SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
1da177e4
LT		 643 SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
644 SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32),
877211f5
TI		 645 SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32),
646 SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
647 SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
648 SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
649 SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
513ace79
TI		 650#ifdef CONFIG_X86_X32
651 SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
652 SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32),
653 SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32),
654 SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
655#endif /* CONFIG_X86_X32 */
1da177e4
LT		 656};
657
658static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
659{
877211f5
TI		 660 struct snd_pcm_file *pcm_file;
661 struct snd_pcm_substream *substream;
1da177e4
LT		 662 void __user *argp = compat_ptr(arg);
663
664 pcm_file = file->private_data;
665 if (! pcm_file)
666 return -ENOTTY;
667 substream = pcm_file->substream;
668 if (! substream)
669 return -ENOTTY;
670
671 /*
672 * When PCM is used on 32bit mode, we need to disable
673 * mmap of PCM status/control records because of the size
674 * incompatibility.
675 */
548a648b 676 pcm_file->no_compat_mmap = 1;
1da177e4
LT		 677
678 switch (cmd) {
679 case SNDRV_PCM_IOCTL_PVERSION:
680 case SNDRV_PCM_IOCTL_INFO:
5a7f2619 681 case SNDRV_PCM_IOCTL_TSTAMP:
6b587ef9 682 case SNDRV_PCM_IOCTL_TTSTAMP:
1da177e4
LT		 683 case SNDRV_PCM_IOCTL_HWSYNC:
684 case SNDRV_PCM_IOCTL_PREPARE:
685 case SNDRV_PCM_IOCTL_RESET:
686 case SNDRV_PCM_IOCTL_START:
687 case SNDRV_PCM_IOCTL_DROP:
688 case SNDRV_PCM_IOCTL_DRAIN:
689 case SNDRV_PCM_IOCTL_PAUSE:
690 case SNDRV_PCM_IOCTL_HW_FREE:
691 case SNDRV_PCM_IOCTL_RESUME:
692 case SNDRV_PCM_IOCTL_XRUN:
693 case SNDRV_PCM_IOCTL_LINK:
694 case SNDRV_PCM_IOCTL_UNLINK:
695 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
0df63e44 696 return snd_pcm_playback_ioctl1(file, substream, cmd, argp);
1da177e4 697 else
0df63e44 698 return snd_pcm_capture_ioctl1(file, substream, cmd, argp);
1da177e4
LT		 699 case SNDRV_PCM_IOCTL_HW_REFINE32:
700 return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
701 case SNDRV_PCM_IOCTL_HW_PARAMS32:
702 return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
703 case SNDRV_PCM_IOCTL_SW_PARAMS32:
704 return snd_pcm_ioctl_sw_params_compat(substream, argp);
705 case SNDRV_PCM_IOCTL_STATUS32:
5442a73a
PLB		 706 return snd_pcm_status_user_compat(substream, argp, false);
707 case SNDRV_PCM_IOCTL_STATUS_EXT32:
708 return snd_pcm_status_user_compat(substream, argp, true);
1da177e4
LT		 709 case SNDRV_PCM_IOCTL_SYNC_PTR32:
710 return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
711 case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
712 return snd_pcm_ioctl_channel_info_compat(substream, argp);
713 case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
714 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
715 case SNDRV_PCM_IOCTL_READI_FRAMES32:
716 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
717 case SNDRV_PCM_IOCTL_WRITEN_FRAMES32:
718 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
719 case SNDRV_PCM_IOCTL_READN_FRAMES32:
720 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
721 case SNDRV_PCM_IOCTL_DELAY32:
722 return snd_pcm_ioctl_delay_compat(substream, argp);
723 case SNDRV_PCM_IOCTL_REWIND32:
724 return snd_pcm_ioctl_rewind_compat(substream, argp);
725 case SNDRV_PCM_IOCTL_FORWARD32:
726 return snd_pcm_ioctl_forward_compat(substream, argp);
513ace79
TI		 727#ifdef CONFIG_X86_X32
728 case SNDRV_PCM_IOCTL_STATUS_X32:
729 return snd_pcm_status_user_x32(substream, argp, false);
730 case SNDRV_PCM_IOCTL_STATUS_EXT_X32:
731 return snd_pcm_status_user_x32(substream, argp, true);
732 case SNDRV_PCM_IOCTL_SYNC_PTR_X32:
733 return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
734 case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
735 return snd_pcm_ioctl_channel_info_x32(substream, argp);
736#endif /* CONFIG_X86_X32 */
1da177e4
LT		 737 }
738
739 return -ENOIOCTLCMD;
740}
Linux 6.x block layer and io_uring tree(s)