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 | |
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 | |
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 | |
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 | |
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 | |
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 | |
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(to: src, n: 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(to: src, from: &compat_status64, n: sizeof(compat_status64))) |
228 | return -EFAULT; |
229 | |
230 | return err; |
231 | } |
232 | |
233 | /* both for HW_PARAMS and HW_REFINE */ |
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_hw_params *data; |
239 | struct snd_pcm_runtime *runtime; |
240 | int err; |
241 | |
242 | runtime = substream->runtime; |
243 | if (!runtime) |
244 | return -ENOTTY; |
245 | |
246 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
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(to: data, from: data32, n: sizeof(*data32))) { |
252 | err = -EFAULT; |
253 | goto error; |
254 | } |
255 | |
256 | if (refine) { |
257 | err = snd_pcm_hw_refine(substream, data); |
258 | if (err < 0) |
259 | goto error; |
260 | err = fixup_unreferenced_params(substream, data); |
261 | } else { |
262 | err = snd_pcm_hw_params(substream, data); |
263 | } |
264 | if (err < 0) |
265 | goto error; |
266 | if (copy_to_user(to: data32, from: data, n: sizeof(*data32)) || |
267 | put_user(data->fifo_size, &data32->fifo_size)) { |
268 | err = -EFAULT; |
269 | goto error; |
270 | } |
271 | |
272 | if (! refine) { |
273 | unsigned int new_boundary = recalculate_boundary(runtime); |
274 | if (new_boundary) |
275 | runtime->boundary = new_boundary; |
276 | } |
277 | error: |
278 | kfree(objp: data); |
279 | return err; |
280 | } |
281 | |
282 | |
283 | /* |
284 | */ |
285 | struct snd_xferi32 { |
286 | s32 result; |
287 | u32 buf; |
288 | u32 frames; |
289 | }; |
290 | |
291 | static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream, |
292 | int dir, struct snd_xferi32 __user *data32) |
293 | { |
294 | compat_caddr_t buf; |
295 | u32 frames; |
296 | int err; |
297 | |
298 | if (! substream->runtime) |
299 | return -ENOTTY; |
300 | if (substream->stream != dir) |
301 | return -EINVAL; |
302 | if (substream->runtime->state == SNDRV_PCM_STATE_OPEN) |
303 | return -EBADFD; |
304 | |
305 | if (get_user(buf, &data32->buf) || |
306 | get_user(frames, &data32->frames)) |
307 | return -EFAULT; |
308 | |
309 | if (dir == SNDRV_PCM_STREAM_PLAYBACK) |
310 | err = snd_pcm_lib_write(substream, compat_ptr(uptr: buf), frames); |
311 | else |
312 | err = snd_pcm_lib_read(substream, compat_ptr(uptr: buf), frames); |
313 | if (err < 0) |
314 | return err; |
315 | /* copy the result */ |
316 | if (put_user(err, &data32->result)) |
317 | return -EFAULT; |
318 | return 0; |
319 | } |
320 | |
321 | |
322 | /* snd_xfern needs remapping of bufs */ |
323 | struct snd_xfern32 { |
324 | s32 result; |
325 | u32 bufs; /* this is void **; */ |
326 | u32 frames; |
327 | }; |
328 | |
329 | /* |
330 | * xfern ioctl nees to copy (up to) 128 pointers on stack. |
331 | * although we may pass the copied pointers through f_op->ioctl, but the ioctl |
332 | * handler there expands again the same 128 pointers on stack, so it is better |
333 | * to handle the function (calling pcm_readv/writev) directly in this handler. |
334 | */ |
335 | static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream, |
336 | int dir, struct snd_xfern32 __user *data32) |
337 | { |
338 | compat_caddr_t buf; |
339 | compat_caddr_t __user *bufptr; |
340 | u32 frames; |
341 | void __user **bufs; |
342 | int err, ch, i; |
343 | |
344 | if (! substream->runtime) |
345 | return -ENOTTY; |
346 | if (substream->stream != dir) |
347 | return -EINVAL; |
348 | if (substream->runtime->state == SNDRV_PCM_STATE_OPEN) |
349 | return -EBADFD; |
350 | |
351 | ch = substream->runtime->channels; |
352 | if (ch > 128) |
353 | return -EINVAL; |
354 | if (get_user(buf, &data32->bufs) || |
355 | get_user(frames, &data32->frames)) |
356 | return -EFAULT; |
357 | bufptr = compat_ptr(uptr: buf); |
358 | bufs = kmalloc_array(n: ch, size: sizeof(void __user *), GFP_KERNEL); |
359 | if (bufs == NULL) |
360 | return -ENOMEM; |
361 | for (i = 0; i < ch; i++) { |
362 | u32 ptr; |
363 | if (get_user(ptr, bufptr)) { |
364 | kfree(objp: bufs); |
365 | return -EFAULT; |
366 | } |
367 | bufs[i] = compat_ptr(uptr: ptr); |
368 | bufptr++; |
369 | } |
370 | if (dir == SNDRV_PCM_STREAM_PLAYBACK) |
371 | err = snd_pcm_lib_writev(substream, bufs, frames); |
372 | else |
373 | err = snd_pcm_lib_readv(substream, bufs, frames); |
374 | if (err >= 0) { |
375 | if (put_user(err, &data32->result)) |
376 | err = -EFAULT; |
377 | } |
378 | kfree(objp: bufs); |
379 | return err; |
380 | } |
381 | |
382 | #ifdef CONFIG_X86_X32_ABI |
383 | /* X32 ABI has 64bit timespec and 64bit alignment */ |
384 | struct snd_pcm_mmap_status_x32 { |
385 | snd_pcm_state_t state; |
386 | s32 pad1; |
387 | u32 hw_ptr; |
388 | u32 pad2; /* alignment */ |
389 | s64 tstamp_sec; |
390 | s64 tstamp_nsec; |
391 | snd_pcm_state_t suspended_state; |
392 | s32 pad3; |
393 | s64 audio_tstamp_sec; |
394 | s64 audio_tstamp_nsec; |
395 | } __packed; |
396 | |
397 | struct snd_pcm_mmap_control_x32 { |
398 | u32 appl_ptr; |
399 | u32 avail_min; |
400 | }; |
401 | |
402 | struct snd_pcm_sync_ptr_x32 { |
403 | u32 flags; |
404 | u32 rsvd; /* alignment */ |
405 | union { |
406 | struct snd_pcm_mmap_status_x32 status; |
407 | unsigned char reserved[64]; |
408 | } s; |
409 | union { |
410 | struct snd_pcm_mmap_control_x32 control; |
411 | unsigned char reserved[64]; |
412 | } c; |
413 | } __packed; |
414 | |
415 | static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream, |
416 | struct snd_pcm_sync_ptr_x32 __user *src) |
417 | { |
418 | struct snd_pcm_runtime *runtime = substream->runtime; |
419 | volatile struct snd_pcm_mmap_status *status; |
420 | volatile struct snd_pcm_mmap_control *control; |
421 | u32 sflags; |
422 | struct snd_pcm_mmap_control scontrol; |
423 | struct snd_pcm_mmap_status sstatus; |
424 | snd_pcm_uframes_t boundary; |
425 | int err; |
426 | |
427 | if (snd_BUG_ON(!runtime)) |
428 | return -EINVAL; |
429 | |
430 | if (get_user(sflags, &src->flags) || |
431 | get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || |
432 | get_user(scontrol.avail_min, &src->c.control.avail_min)) |
433 | return -EFAULT; |
434 | if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) { |
435 | err = snd_pcm_hwsync(substream); |
436 | if (err < 0) |
437 | return err; |
438 | } |
439 | status = runtime->status; |
440 | control = runtime->control; |
441 | boundary = recalculate_boundary(runtime); |
442 | if (!boundary) |
443 | boundary = 0x7fffffff; |
444 | snd_pcm_stream_lock_irq(substream); |
445 | /* FIXME: we should consider the boundary for the sync from app */ |
446 | if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) |
447 | control->appl_ptr = scontrol.appl_ptr; |
448 | else |
449 | scontrol.appl_ptr = control->appl_ptr % boundary; |
450 | if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) |
451 | control->avail_min = scontrol.avail_min; |
452 | else |
453 | scontrol.avail_min = control->avail_min; |
454 | sstatus.state = status->state; |
455 | sstatus.hw_ptr = status->hw_ptr % boundary; |
456 | sstatus.tstamp = status->tstamp; |
457 | sstatus.suspended_state = status->suspended_state; |
458 | sstatus.audio_tstamp = status->audio_tstamp; |
459 | snd_pcm_stream_unlock_irq(substream); |
460 | if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) |
461 | snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE); |
462 | if (put_user(sstatus.state, &src->s.status.state) || |
463 | put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) || |
464 | put_user(sstatus.tstamp.tv_sec, &src->s.status.tstamp_sec) || |
465 | put_user(sstatus.tstamp.tv_nsec, &src->s.status.tstamp_nsec) || |
466 | put_user(sstatus.suspended_state, &src->s.status.suspended_state) || |
467 | put_user(sstatus.audio_tstamp.tv_sec, &src->s.status.audio_tstamp_sec) || |
468 | put_user(sstatus.audio_tstamp.tv_nsec, &src->s.status.audio_tstamp_nsec) || |
469 | put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || |
470 | put_user(scontrol.avail_min, &src->c.control.avail_min)) |
471 | return -EFAULT; |
472 | |
473 | return 0; |
474 | } |
475 | #endif /* CONFIG_X86_X32_ABI */ |
476 | |
477 | #ifdef __BIG_ENDIAN |
478 | typedef char __pad_before_u32[4]; |
479 | typedef char __pad_after_u32[0]; |
480 | #else |
481 | typedef char __pad_before_u32[0]; |
482 | typedef char __pad_after_u32[4]; |
483 | #endif |
484 | |
485 | /* PCM 2.0.15 API definition had a bug in mmap control; it puts the avail_min |
486 | * at the wrong offset due to a typo in padding type. |
487 | * The bug hits only 32bit. |
488 | * A workaround for incorrect read/write is needed only in 32bit compat mode. |
489 | */ |
490 | struct __snd_pcm_mmap_control64_buggy { |
491 | __pad_before_u32 __pad1; |
492 | __u32 appl_ptr; |
493 | __pad_before_u32 __pad2; /* SiC! here is the bug */ |
494 | __pad_before_u32 __pad3; |
495 | __u32 avail_min; |
496 | __pad_after_uframe __pad4; |
497 | }; |
498 | |
499 | static int snd_pcm_ioctl_sync_ptr_buggy(struct snd_pcm_substream *substream, |
500 | struct snd_pcm_sync_ptr __user *_sync_ptr) |
501 | { |
502 | struct snd_pcm_runtime *runtime = substream->runtime; |
503 | struct snd_pcm_sync_ptr sync_ptr; |
504 | struct __snd_pcm_mmap_control64_buggy *sync_cp; |
505 | volatile struct snd_pcm_mmap_status *status; |
506 | volatile struct snd_pcm_mmap_control *control; |
507 | int err; |
508 | |
509 | memset(&sync_ptr, 0, sizeof(sync_ptr)); |
510 | sync_cp = (struct __snd_pcm_mmap_control64_buggy *)&sync_ptr.c.control; |
511 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) |
512 | return -EFAULT; |
513 | if (copy_from_user(to: sync_cp, from: &(_sync_ptr->c.control), n: sizeof(*sync_cp))) |
514 | return -EFAULT; |
515 | status = runtime->status; |
516 | control = runtime->control; |
517 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { |
518 | err = snd_pcm_hwsync(substream); |
519 | if (err < 0) |
520 | return err; |
521 | } |
522 | snd_pcm_stream_lock_irq(substream); |
523 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) { |
524 | err = pcm_lib_apply_appl_ptr(substream, sync_cp->appl_ptr); |
525 | if (err < 0) { |
526 | snd_pcm_stream_unlock_irq(substream); |
527 | return err; |
528 | } |
529 | } else { |
530 | sync_cp->appl_ptr = control->appl_ptr; |
531 | } |
532 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) |
533 | control->avail_min = sync_cp->avail_min; |
534 | else |
535 | sync_cp->avail_min = control->avail_min; |
536 | sync_ptr.s.status.state = status->state; |
537 | sync_ptr.s.status.hw_ptr = status->hw_ptr; |
538 | sync_ptr.s.status.tstamp = status->tstamp; |
539 | sync_ptr.s.status.suspended_state = status->suspended_state; |
540 | sync_ptr.s.status.audio_tstamp = status->audio_tstamp; |
541 | snd_pcm_stream_unlock_irq(substream); |
542 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) |
543 | snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE); |
544 | if (copy_to_user(to: _sync_ptr, from: &sync_ptr, n: sizeof(sync_ptr))) |
545 | return -EFAULT; |
546 | return 0; |
547 | } |
548 | |
549 | /* |
550 | */ |
551 | enum { |
552 | SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32), |
553 | SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32), |
554 | SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32), |
555 | SNDRV_PCM_IOCTL_STATUS_COMPAT32 = _IOR('A', 0x20, struct snd_pcm_status32), |
556 | SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32 = _IOWR('A', 0x24, struct snd_pcm_status32), |
557 | SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32), |
558 | SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32), |
559 | SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32), |
560 | SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32), |
561 | SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32), |
562 | SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32), |
563 | SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32), |
564 | SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32), |
565 | SNDRV_PCM_IOCTL_STATUS_COMPAT64 = _IOR('A', 0x20, struct compat_snd_pcm_status64), |
566 | SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64 = _IOWR('A', 0x24, struct compat_snd_pcm_status64), |
567 | #ifdef CONFIG_X86_X32_ABI |
568 | SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info), |
569 | SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32), |
570 | #endif /* CONFIG_X86_X32_ABI */ |
571 | }; |
572 | |
573 | static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) |
574 | { |
575 | struct snd_pcm_file *pcm_file; |
576 | struct snd_pcm_substream *substream; |
577 | void __user *argp = compat_ptr(uptr: arg); |
578 | |
579 | pcm_file = file->private_data; |
580 | if (! pcm_file) |
581 | return -ENOTTY; |
582 | substream = pcm_file->substream; |
583 | if (! substream) |
584 | return -ENOTTY; |
585 | |
586 | /* |
587 | * When PCM is used on 32bit mode, we need to disable |
588 | * mmap of the old PCM status/control records because |
589 | * of the size incompatibility. |
590 | */ |
591 | pcm_file->no_compat_mmap = 1; |
592 | |
593 | switch (cmd) { |
594 | case SNDRV_PCM_IOCTL_PVERSION: |
595 | case SNDRV_PCM_IOCTL_INFO: |
596 | case SNDRV_PCM_IOCTL_TSTAMP: |
597 | case SNDRV_PCM_IOCTL_TTSTAMP: |
598 | case SNDRV_PCM_IOCTL_USER_PVERSION: |
599 | case SNDRV_PCM_IOCTL_HWSYNC: |
600 | case SNDRV_PCM_IOCTL_PREPARE: |
601 | case SNDRV_PCM_IOCTL_RESET: |
602 | case SNDRV_PCM_IOCTL_START: |
603 | case SNDRV_PCM_IOCTL_DROP: |
604 | case SNDRV_PCM_IOCTL_DRAIN: |
605 | case SNDRV_PCM_IOCTL_PAUSE: |
606 | case SNDRV_PCM_IOCTL_HW_FREE: |
607 | case SNDRV_PCM_IOCTL_RESUME: |
608 | case SNDRV_PCM_IOCTL_XRUN: |
609 | case SNDRV_PCM_IOCTL_LINK: |
610 | case SNDRV_PCM_IOCTL_UNLINK: |
611 | case __SNDRV_PCM_IOCTL_SYNC_PTR32: |
612 | return snd_pcm_common_ioctl(file, substream, cmd, argp); |
613 | case __SNDRV_PCM_IOCTL_SYNC_PTR64: |
614 | #ifdef CONFIG_X86_X32_ABI |
615 | if (in_x32_syscall()) |
616 | return snd_pcm_ioctl_sync_ptr_x32(substream, src: argp); |
617 | #endif /* CONFIG_X86_X32_ABI */ |
618 | return snd_pcm_ioctl_sync_ptr_buggy(substream, sync_ptr: argp); |
619 | case SNDRV_PCM_IOCTL_HW_REFINE32: |
620 | return snd_pcm_ioctl_hw_params_compat(substream, refine: 1, data32: argp); |
621 | case SNDRV_PCM_IOCTL_HW_PARAMS32: |
622 | return snd_pcm_ioctl_hw_params_compat(substream, refine: 0, data32: argp); |
623 | case SNDRV_PCM_IOCTL_SW_PARAMS32: |
624 | return snd_pcm_ioctl_sw_params_compat(substream, src: argp); |
625 | case SNDRV_PCM_IOCTL_STATUS_COMPAT32: |
626 | return snd_pcm_status_user32(substream, argp, false); |
627 | case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32: |
628 | return snd_pcm_status_user32(substream, argp, true); |
629 | case SNDRV_PCM_IOCTL_CHANNEL_INFO32: |
630 | return snd_pcm_ioctl_channel_info_compat(substream, src: argp); |
631 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES32: |
632 | return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); |
633 | case SNDRV_PCM_IOCTL_READI_FRAMES32: |
634 | return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); |
635 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES32: |
636 | return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); |
637 | case SNDRV_PCM_IOCTL_READN_FRAMES32: |
638 | return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); |
639 | case SNDRV_PCM_IOCTL_DELAY32: |
640 | return snd_pcm_ioctl_delay_compat(substream, src: argp); |
641 | case SNDRV_PCM_IOCTL_REWIND32: |
642 | return snd_pcm_ioctl_rewind_compat(substream, src: argp); |
643 | case SNDRV_PCM_IOCTL_FORWARD32: |
644 | return snd_pcm_ioctl_forward_compat(substream, src: argp); |
645 | case SNDRV_PCM_IOCTL_STATUS_COMPAT64: |
646 | return snd_pcm_status_user_compat64(substream, src: argp, ext: false); |
647 | case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64: |
648 | return snd_pcm_status_user_compat64(substream, src: argp, ext: true); |
649 | #ifdef CONFIG_X86_X32_ABI |
650 | case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32: |
651 | return snd_pcm_ioctl_channel_info_x32(substream, argp); |
652 | #endif /* CONFIG_X86_X32_ABI */ |
653 | } |
654 | |
655 | return -ENOIOCTLCMD; |
656 | } |
657 | |