Commit | Line | Data |
---|---|---|
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 | 12 | static 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 | 26 | static 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 | 40 | static 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 | 54 | struct 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 | 70 | struct 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 | ||
877211f5 TI |
86 | static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream, |
87 | struct snd_pcm_sw_params32 __user *src) | |
1da177e4 | 88 | { |
877211f5 | 89 | struct snd_pcm_sw_params params; |
b2711310 | 90 | snd_pcm_uframes_t boundary; |
1da177e4 LT |
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) || | |
e58c295c TI |
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)) | |
1da177e4 | 105 | return -EFAULT; |
b2711310 TI |
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; | |
1da177e4 LT |
113 | err = snd_pcm_sw_params(substream, ¶ms); |
114 | if (err < 0) | |
115 | return err; | |
7153a558 | 116 | if (boundary && put_user(boundary, &src->boundary)) |
1da177e4 LT |
117 | return -EFAULT; |
118 | return err; | |
119 | } | |
120 | ||
877211f5 | 121 | struct snd_pcm_channel_info32 { |
1da177e4 LT |
122 | u32 channel; |
123 | u32 offset; | |
124 | u32 first; | |
125 | u32 step; | |
126 | }; | |
127 | ||
877211f5 TI |
128 | static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream, |
129 | struct snd_pcm_channel_info32 __user *src) | |
1da177e4 | 130 | { |
877211f5 | 131 | struct snd_pcm_channel_info info; |
1da177e4 LT |
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 | ||
83a44a4f | 150 | #ifdef CONFIG_X86_X32_ABI |
513ace79 TI |
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) | |
83a44a4f | 156 | #endif /* CONFIG_X86_X32_ABI */ |
513ace79 | 157 | |
3ddee7f8 | 158 | struct compat_snd_pcm_status64 { |
cb639a42 | 159 | snd_pcm_state_t state; |
3ddee7f8 BW |
160 | u8 rsvd[4]; /* alignment */ |
161 | s64 trigger_tstamp_sec; | |
162 | s64 trigger_tstamp_nsec; | |
163 | s64 tstamp_sec; | |
164 | s64 tstamp_nsec; | |
513ace79 TI |
165 | u32 appl_ptr; |
166 | u32 hw_ptr; | |
167 | s32 delay; | |
168 | u32 avail; | |
169 | u32 avail_max; | |
170 | u32 overrange; | |
cb639a42 | 171 | snd_pcm_state_t suspended_state; |
513ace79 | 172 | u32 audio_tstamp_data; |
3ddee7f8 BW |
173 | s64 audio_tstamp_sec; |
174 | s64 audio_tstamp_nsec; | |
175 | s64 driver_tstamp_sec; | |
176 | s64 driver_tstamp_nsec; | |
513ace79 | 177 | u32 audio_tstamp_accuracy; |
3ddee7f8 | 178 | unsigned char reserved[52-4*sizeof(s64)]; |
513ace79 TI |
179 | } __packed; |
180 | ||
3ddee7f8 BW |
181 | static int snd_pcm_status_user_compat64(struct snd_pcm_substream *substream, |
182 | struct compat_snd_pcm_status64 __user *src, | |
183 | bool ext) | |
513ace79 | 184 | { |
3ddee7f8 BW |
185 | struct snd_pcm_status64 status; |
186 | struct compat_snd_pcm_status64 compat_status64; | |
513ace79 TI |
187 | int err; |
188 | ||
189 | memset(&status, 0, sizeof(status)); | |
3ddee7f8 | 190 | memset(&compat_status64, 0, sizeof(compat_status64)); |
513ace79 TI |
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; | |
3ddee7f8 | 199 | err = snd_pcm_status64(substream, &status); |
513ace79 TI |
200 | if (err < 0) |
201 | return err; | |
202 | ||
203 | if (clear_user(src, sizeof(*src))) | |
204 | return -EFAULT; | |
3ddee7f8 BW |
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))) | |
513ace79 TI |
228 | return -EFAULT; |
229 | ||
230 | return err; | |
231 | } | |
513ace79 | 232 | |
1da177e4 | 233 | /* both for HW_PARAMS and HW_REFINE */ |
877211f5 | 234 | static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream, |
1da177e4 | 235 | int refine, |
877211f5 | 236 | struct snd_pcm_hw_params32 __user *data32) |
1da177e4 | 237 | { |
ae921398 | 238 | struct snd_pcm_hw_params *data __free(kfree) = NULL; |
877211f5 | 239 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
240 | int err; |
241 | ||
137c171c TI |
242 | runtime = substream->runtime; |
243 | if (!runtime) | |
1da177e4 LT |
244 | return -ENOTTY; |
245 | ||
43c54b8c NB |
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 */ | |
ae921398 TI |
251 | if (copy_from_user(data, data32, sizeof(*data32))) |
252 | return -EFAULT; | |
ef44a1ec | 253 | |
358040e3 | 254 | if (refine) { |
1da177e4 | 255 | err = snd_pcm_hw_refine(substream, data); |
358040e3 | 256 | if (err < 0) |
ae921398 | 257 | return err; |
358040e3 TI |
258 | err = fixup_unreferenced_params(substream, data); |
259 | } else { | |
1da177e4 | 260 | err = snd_pcm_hw_params(substream, data); |
358040e3 | 261 | } |
1da177e4 | 262 | if (err < 0) |
ae921398 | 263 | return err; |
1da177e4 | 264 | if (copy_to_user(data32, data, sizeof(*data32)) || |
ae921398 TI |
265 | put_user(data->fifo_size, &data32->fifo_size)) |
266 | return -EFAULT; | |
1da177e4 | 267 | |
7153a558 TI |
268 | if (! refine) { |
269 | unsigned int new_boundary = recalculate_boundary(runtime); | |
270 | if (new_boundary) | |
271 | runtime->boundary = new_boundary; | |
272 | } | |
1da177e4 LT |
273 | return err; |
274 | } | |
275 | ||
276 | ||
277 | /* | |
278 | */ | |
877211f5 | 279 | struct snd_xferi32 { |
1da177e4 LT |
280 | s32 result; |
281 | u32 buf; | |
282 | u32 frames; | |
283 | }; | |
284 | ||
877211f5 TI |
285 | static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream, |
286 | int dir, struct snd_xferi32 __user *data32) | |
1da177e4 LT |
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; | |
f0061c18 | 296 | if (substream->runtime->state == SNDRV_PCM_STATE_OPEN) |
1da177e4 LT |
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 */ | |
877211f5 | 317 | struct snd_xfern32 { |
1da177e4 LT |
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 | */ | |
877211f5 TI |
329 | static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream, |
330 | int dir, struct snd_xfern32 __user *data32) | |
1da177e4 LT |
331 | { |
332 | compat_caddr_t buf; | |
333 | compat_caddr_t __user *bufptr; | |
334 | u32 frames; | |
ae921398 | 335 | void __user **bufs __free(kfree) = NULL; |
1da177e4 LT |
336 | int err, ch, i; |
337 | ||
338 | if (! substream->runtime) | |
339 | return -ENOTTY; | |
340 | if (substream->stream != dir) | |
341 | return -EINVAL; | |
f0061c18 | 342 | if (substream->runtime->state == SNDRV_PCM_STATE_OPEN) |
f13876e2 | 343 | return -EBADFD; |
1da177e4 | 344 | |
137c171c TI |
345 | ch = substream->runtime->channels; |
346 | if (ch > 128) | |
1da177e4 LT |
347 | return -EINVAL; |
348 | if (get_user(buf, &data32->bufs) || | |
349 | get_user(frames, &data32->frames)) | |
350 | return -EFAULT; | |
351 | bufptr = compat_ptr(buf); | |
6da2ec56 | 352 | bufs = kmalloc_array(ch, sizeof(void __user *), GFP_KERNEL); |
1da177e4 LT |
353 | if (bufs == NULL) |
354 | return -ENOMEM; | |
355 | for (i = 0; i < ch; i++) { | |
356 | u32 ptr; | |
ae921398 | 357 | if (get_user(ptr, bufptr)) |
1da177e4 | 358 | return -EFAULT; |
ca9380fd | 359 | bufs[i] = compat_ptr(ptr); |
1da177e4 LT |
360 | bufptr++; |
361 | } | |
362 | if (dir == SNDRV_PCM_STREAM_PLAYBACK) | |
363 | err = snd_pcm_lib_writev(substream, bufs, frames); | |
364 | else | |
365 | err = snd_pcm_lib_readv(substream, bufs, frames); | |
366 | if (err >= 0) { | |
367 | if (put_user(err, &data32->result)) | |
ae921398 | 368 | return -EFAULT; |
1da177e4 | 369 | } |
1da177e4 LT |
370 | return err; |
371 | } | |
372 | ||
83a44a4f | 373 | #ifdef CONFIG_X86_X32_ABI |
513ace79 TI |
374 | /* X32 ABI has 64bit timespec and 64bit alignment */ |
375 | struct snd_pcm_mmap_status_x32 { | |
cb639a42 | 376 | snd_pcm_state_t state; |
513ace79 TI |
377 | s32 pad1; |
378 | u32 hw_ptr; | |
379 | u32 pad2; /* alignment */ | |
80fe7430 AB |
380 | s64 tstamp_sec; |
381 | s64 tstamp_nsec; | |
cb639a42 | 382 | snd_pcm_state_t suspended_state; |
c9adcdbc | 383 | s32 pad3; |
80fe7430 AB |
384 | s64 audio_tstamp_sec; |
385 | s64 audio_tstamp_nsec; | |
513ace79 TI |
386 | } __packed; |
387 | ||
388 | struct snd_pcm_mmap_control_x32 { | |
389 | u32 appl_ptr; | |
390 | u32 avail_min; | |
391 | }; | |
392 | ||
393 | struct snd_pcm_sync_ptr_x32 { | |
394 | u32 flags; | |
395 | u32 rsvd; /* alignment */ | |
396 | union { | |
397 | struct snd_pcm_mmap_status_x32 status; | |
398 | unsigned char reserved[64]; | |
399 | } s; | |
400 | union { | |
401 | struct snd_pcm_mmap_control_x32 control; | |
402 | unsigned char reserved[64]; | |
403 | } c; | |
404 | } __packed; | |
405 | ||
406 | static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream, | |
407 | struct snd_pcm_sync_ptr_x32 __user *src) | |
408 | { | |
409 | struct snd_pcm_runtime *runtime = substream->runtime; | |
410 | volatile struct snd_pcm_mmap_status *status; | |
411 | volatile struct snd_pcm_mmap_control *control; | |
412 | u32 sflags; | |
413 | struct snd_pcm_mmap_control scontrol; | |
414 | struct snd_pcm_mmap_status sstatus; | |
415 | snd_pcm_uframes_t boundary; | |
416 | int err; | |
417 | ||
418 | if (snd_BUG_ON(!runtime)) | |
419 | return -EINVAL; | |
420 | ||
421 | if (get_user(sflags, &src->flags) || | |
422 | get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || | |
423 | get_user(scontrol.avail_min, &src->c.control.avail_min)) | |
424 | return -EFAULT; | |
425 | if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
426 | err = snd_pcm_hwsync(substream); | |
427 | if (err < 0) | |
428 | return err; | |
429 | } | |
430 | status = runtime->status; | |
431 | control = runtime->control; | |
432 | boundary = recalculate_boundary(runtime); | |
433 | if (!boundary) | |
434 | boundary = 0x7fffffff; | |
650224fe TI |
435 | scoped_guard(pcm_stream_lock_irq, substream) { |
436 | /* FIXME: we should consider the boundary for the sync from app */ | |
437 | if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) | |
438 | control->appl_ptr = scontrol.appl_ptr; | |
439 | else | |
440 | scontrol.appl_ptr = control->appl_ptr % boundary; | |
441 | if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
442 | control->avail_min = scontrol.avail_min; | |
443 | else | |
444 | scontrol.avail_min = control->avail_min; | |
445 | sstatus.state = status->state; | |
446 | sstatus.hw_ptr = status->hw_ptr % boundary; | |
447 | sstatus.tstamp = status->tstamp; | |
448 | sstatus.suspended_state = status->suspended_state; | |
449 | sstatus.audio_tstamp = status->audio_tstamp; | |
450 | } | |
a25684a9 TI |
451 | if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) |
452 | snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE); | |
513ace79 TI |
453 | if (put_user(sstatus.state, &src->s.status.state) || |
454 | put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) || | |
80fe7430 AB |
455 | put_user(sstatus.tstamp.tv_sec, &src->s.status.tstamp_sec) || |
456 | put_user(sstatus.tstamp.tv_nsec, &src->s.status.tstamp_nsec) || | |
513ace79 | 457 | put_user(sstatus.suspended_state, &src->s.status.suspended_state) || |
80fe7430 AB |
458 | put_user(sstatus.audio_tstamp.tv_sec, &src->s.status.audio_tstamp_sec) || |
459 | put_user(sstatus.audio_tstamp.tv_nsec, &src->s.status.audio_tstamp_nsec) || | |
513ace79 TI |
460 | put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || |
461 | put_user(scontrol.avail_min, &src->c.control.avail_min)) | |
462 | return -EFAULT; | |
463 | ||
464 | return 0; | |
465 | } | |
83a44a4f | 466 | #endif /* CONFIG_X86_X32_ABI */ |
1da177e4 | 467 | |
228af5a4 TI |
468 | #ifdef __BIG_ENDIAN |
469 | typedef char __pad_before_u32[4]; | |
470 | typedef char __pad_after_u32[0]; | |
471 | #else | |
472 | typedef char __pad_before_u32[0]; | |
473 | typedef char __pad_after_u32[4]; | |
474 | #endif | |
475 | ||
476 | /* PCM 2.0.15 API definition had a bug in mmap control; it puts the avail_min | |
477 | * at the wrong offset due to a typo in padding type. | |
478 | * The bug hits only 32bit. | |
479 | * A workaround for incorrect read/write is needed only in 32bit compat mode. | |
480 | */ | |
481 | struct __snd_pcm_mmap_control64_buggy { | |
482 | __pad_before_u32 __pad1; | |
483 | __u32 appl_ptr; | |
484 | __pad_before_u32 __pad2; /* SiC! here is the bug */ | |
485 | __pad_before_u32 __pad3; | |
486 | __u32 avail_min; | |
487 | __pad_after_uframe __pad4; | |
488 | }; | |
489 | ||
490 | static int snd_pcm_ioctl_sync_ptr_buggy(struct snd_pcm_substream *substream, | |
491 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
492 | { | |
493 | struct snd_pcm_runtime *runtime = substream->runtime; | |
494 | struct snd_pcm_sync_ptr sync_ptr; | |
495 | struct __snd_pcm_mmap_control64_buggy *sync_cp; | |
496 | volatile struct snd_pcm_mmap_status *status; | |
497 | volatile struct snd_pcm_mmap_control *control; | |
498 | int err; | |
499 | ||
500 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
501 | sync_cp = (struct __snd_pcm_mmap_control64_buggy *)&sync_ptr.c.control; | |
502 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
503 | return -EFAULT; | |
504 | if (copy_from_user(sync_cp, &(_sync_ptr->c.control), sizeof(*sync_cp))) | |
505 | return -EFAULT; | |
506 | status = runtime->status; | |
507 | control = runtime->control; | |
508 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
509 | err = snd_pcm_hwsync(substream); | |
510 | if (err < 0) | |
511 | return err; | |
512 | } | |
650224fe TI |
513 | scoped_guard(pcm_stream_lock_irq, substream) { |
514 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) { | |
515 | err = pcm_lib_apply_appl_ptr(substream, sync_cp->appl_ptr); | |
516 | if (err < 0) | |
517 | return err; | |
518 | } else { | |
519 | sync_cp->appl_ptr = control->appl_ptr; | |
228af5a4 | 520 | } |
650224fe TI |
521 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) |
522 | control->avail_min = sync_cp->avail_min; | |
523 | else | |
524 | sync_cp->avail_min = control->avail_min; | |
525 | sync_ptr.s.status.state = status->state; | |
526 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
527 | sync_ptr.s.status.tstamp = status->tstamp; | |
528 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
529 | sync_ptr.s.status.audio_tstamp = status->audio_tstamp; | |
228af5a4 | 530 | } |
a25684a9 TI |
531 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) |
532 | snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE); | |
228af5a4 TI |
533 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) |
534 | return -EFAULT; | |
535 | return 0; | |
536 | } | |
537 | ||
1da177e4 LT |
538 | /* |
539 | */ | |
540 | enum { | |
877211f5 TI |
541 | SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32), |
542 | SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32), | |
543 | SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32), | |
3ddee7f8 BW |
544 | SNDRV_PCM_IOCTL_STATUS_COMPAT32 = _IOR('A', 0x20, struct snd_pcm_status32), |
545 | SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32 = _IOWR('A', 0x24, struct snd_pcm_status32), | |
1da177e4 | 546 | SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32), |
877211f5 | 547 | SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32), |
1da177e4 LT |
548 | SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32), |
549 | SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32), | |
877211f5 TI |
550 | SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32), |
551 | SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32), | |
552 | SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32), | |
553 | SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32), | |
3ddee7f8 BW |
554 | SNDRV_PCM_IOCTL_STATUS_COMPAT64 = _IOR('A', 0x20, struct compat_snd_pcm_status64), |
555 | SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64 = _IOWR('A', 0x24, struct compat_snd_pcm_status64), | |
83a44a4f | 556 | #ifdef CONFIG_X86_X32_ABI |
513ace79 | 557 | SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info), |
513ace79 | 558 | SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32), |
83a44a4f | 559 | #endif /* CONFIG_X86_X32_ABI */ |
1da177e4 LT |
560 | }; |
561 | ||
562 | static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) | |
563 | { | |
877211f5 TI |
564 | struct snd_pcm_file *pcm_file; |
565 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
566 | void __user *argp = compat_ptr(arg); |
567 | ||
568 | pcm_file = file->private_data; | |
569 | if (! pcm_file) | |
570 | return -ENOTTY; | |
571 | substream = pcm_file->substream; | |
572 | if (! substream) | |
573 | return -ENOTTY; | |
574 | ||
575 | /* | |
576 | * When PCM is used on 32bit mode, we need to disable | |
80fe7430 AB |
577 | * mmap of the old PCM status/control records because |
578 | * of the size incompatibility. | |
1da177e4 | 579 | */ |
548a648b | 580 | pcm_file->no_compat_mmap = 1; |
1da177e4 LT |
581 | |
582 | switch (cmd) { | |
583 | case SNDRV_PCM_IOCTL_PVERSION: | |
584 | case SNDRV_PCM_IOCTL_INFO: | |
5a7f2619 | 585 | case SNDRV_PCM_IOCTL_TSTAMP: |
6b587ef9 | 586 | case SNDRV_PCM_IOCTL_TTSTAMP: |
4b671f57 | 587 | case SNDRV_PCM_IOCTL_USER_PVERSION: |
1da177e4 LT |
588 | case SNDRV_PCM_IOCTL_HWSYNC: |
589 | case SNDRV_PCM_IOCTL_PREPARE: | |
590 | case SNDRV_PCM_IOCTL_RESET: | |
591 | case SNDRV_PCM_IOCTL_START: | |
592 | case SNDRV_PCM_IOCTL_DROP: | |
593 | case SNDRV_PCM_IOCTL_DRAIN: | |
594 | case SNDRV_PCM_IOCTL_PAUSE: | |
595 | case SNDRV_PCM_IOCTL_HW_FREE: | |
596 | case SNDRV_PCM_IOCTL_RESUME: | |
597 | case SNDRV_PCM_IOCTL_XRUN: | |
598 | case SNDRV_PCM_IOCTL_LINK: | |
599 | case SNDRV_PCM_IOCTL_UNLINK: | |
80fe7430 AB |
600 | case __SNDRV_PCM_IOCTL_SYNC_PTR32: |
601 | return snd_pcm_common_ioctl(file, substream, cmd, argp); | |
602 | case __SNDRV_PCM_IOCTL_SYNC_PTR64: | |
83a44a4f | 603 | #ifdef CONFIG_X86_X32_ABI |
80fe7430 AB |
604 | if (in_x32_syscall()) |
605 | return snd_pcm_ioctl_sync_ptr_x32(substream, argp); | |
83a44a4f | 606 | #endif /* CONFIG_X86_X32_ABI */ |
228af5a4 | 607 | return snd_pcm_ioctl_sync_ptr_buggy(substream, argp); |
1da177e4 LT |
608 | case SNDRV_PCM_IOCTL_HW_REFINE32: |
609 | return snd_pcm_ioctl_hw_params_compat(substream, 1, argp); | |
610 | case SNDRV_PCM_IOCTL_HW_PARAMS32: | |
611 | return snd_pcm_ioctl_hw_params_compat(substream, 0, argp); | |
612 | case SNDRV_PCM_IOCTL_SW_PARAMS32: | |
613 | return snd_pcm_ioctl_sw_params_compat(substream, argp); | |
3ddee7f8 BW |
614 | case SNDRV_PCM_IOCTL_STATUS_COMPAT32: |
615 | return snd_pcm_status_user32(substream, argp, false); | |
616 | case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32: | |
617 | return snd_pcm_status_user32(substream, argp, true); | |
1da177e4 LT |
618 | case SNDRV_PCM_IOCTL_CHANNEL_INFO32: |
619 | return snd_pcm_ioctl_channel_info_compat(substream, argp); | |
620 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES32: | |
621 | return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); | |
622 | case SNDRV_PCM_IOCTL_READI_FRAMES32: | |
623 | return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); | |
624 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES32: | |
625 | return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); | |
626 | case SNDRV_PCM_IOCTL_READN_FRAMES32: | |
627 | return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); | |
628 | case SNDRV_PCM_IOCTL_DELAY32: | |
629 | return snd_pcm_ioctl_delay_compat(substream, argp); | |
630 | case SNDRV_PCM_IOCTL_REWIND32: | |
631 | return snd_pcm_ioctl_rewind_compat(substream, argp); | |
632 | case SNDRV_PCM_IOCTL_FORWARD32: | |
633 | return snd_pcm_ioctl_forward_compat(substream, argp); | |
3ddee7f8 BW |
634 | case SNDRV_PCM_IOCTL_STATUS_COMPAT64: |
635 | return snd_pcm_status_user_compat64(substream, argp, false); | |
636 | case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64: | |
637 | return snd_pcm_status_user_compat64(substream, argp, true); | |
83a44a4f | 638 | #ifdef CONFIG_X86_X32_ABI |
513ace79 TI |
639 | case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32: |
640 | return snd_pcm_ioctl_channel_info_x32(substream, argp); | |
83a44a4f | 641 | #endif /* CONFIG_X86_X32_ABI */ |
1da177e4 LT |
642 | } |
643 | ||
644 | return -ENOIOCTLCMD; | |
645 | } |