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17#include <linux/compat.h>
18#include <linux/module.h>
19#include <linux/videodev2.h>
20#include <linux/v4l2-subdev.h>
21#include <media/v4l2-dev.h>
22#include <media/v4l2-fh.h>
23#include <media/v4l2-ctrls.h>
24#include <media/v4l2-ioctl.h>
25
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36
37
38#define assign_in_user(to, from) \
39({ \
40 typeof(*from) __assign_tmp; \
41 \
42 get_user(__assign_tmp, from) || put_user(__assign_tmp, to); \
43})
44
45
46
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53
54
55
56
57
58#define get_user_cast(__x, __ptr) \
59({ \
60 get_user(__x, (typeof(*__ptr) __user *)(__ptr)); \
61})
62
63
64
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66
67
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69
70
71
72
73
74
75#define put_user_force(__x, __ptr) \
76({ \
77 put_user((typeof(*__x) __force *)(__x), __ptr); \
78})
79
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93
94
95#define assign_in_user_cast(to, from) \
96({ \
97 typeof(*from) __assign_tmp; \
98 \
99 get_user_cast(__assign_tmp, from) || put_user(__assign_tmp, to);\
100})
101
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109
110
111
112static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
113{
114 long ret = -ENOIOCTLCMD;
115
116 if (file->f_op->unlocked_ioctl)
117 ret = file->f_op->unlocked_ioctl(file, cmd, arg);
118
119 return ret;
120}
121
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136
137
138struct v4l2_clip32 {
139 struct v4l2_rect c;
140 compat_caddr_t next;
141};
142
143struct v4l2_window32 {
144 struct v4l2_rect w;
145 __u32 field;
146 __u32 chromakey;
147 compat_caddr_t clips;
148 __u32 clipcount;
149 compat_caddr_t bitmap;
150 __u8 global_alpha;
151};
152
153static int get_v4l2_window32(struct v4l2_window __user *p64,
154 struct v4l2_window32 __user *p32,
155 void __user *aux_buf, u32 aux_space)
156{
157 struct v4l2_clip32 __user *uclips;
158 struct v4l2_clip __user *kclips;
159 compat_caddr_t p;
160 u32 clipcount;
161
162 if (!access_ok(p32, sizeof(*p32)) ||
163 copy_in_user(&p64->w, &p32->w, sizeof(p32->w)) ||
164 assign_in_user(&p64->field, &p32->field) ||
165 assign_in_user(&p64->chromakey, &p32->chromakey) ||
166 assign_in_user(&p64->global_alpha, &p32->global_alpha) ||
167 get_user(clipcount, &p32->clipcount) ||
168 put_user(clipcount, &p64->clipcount))
169 return -EFAULT;
170 if (clipcount > 2048)
171 return -EINVAL;
172 if (!clipcount)
173 return put_user(NULL, &p64->clips);
174
175 if (get_user(p, &p32->clips))
176 return -EFAULT;
177 uclips = compat_ptr(p);
178 if (aux_space < clipcount * sizeof(*kclips))
179 return -EFAULT;
180 kclips = aux_buf;
181 if (put_user(kclips, &p64->clips))
182 return -EFAULT;
183
184 while (clipcount--) {
185 if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
186 return -EFAULT;
187 if (put_user(clipcount ? kclips + 1 : NULL, &kclips->next))
188 return -EFAULT;
189 uclips++;
190 kclips++;
191 }
192 return 0;
193}
194
195static int put_v4l2_window32(struct v4l2_window __user *p64,
196 struct v4l2_window32 __user *p32)
197{
198 struct v4l2_clip __user *kclips;
199 struct v4l2_clip32 __user *uclips;
200 compat_caddr_t p;
201 u32 clipcount;
202
203 if (copy_in_user(&p32->w, &p64->w, sizeof(p64->w)) ||
204 assign_in_user(&p32->field, &p64->field) ||
205 assign_in_user(&p32->chromakey, &p64->chromakey) ||
206 assign_in_user(&p32->global_alpha, &p64->global_alpha) ||
207 get_user(clipcount, &p64->clipcount) ||
208 put_user(clipcount, &p32->clipcount))
209 return -EFAULT;
210 if (!clipcount)
211 return 0;
212
213 if (get_user(kclips, &p64->clips))
214 return -EFAULT;
215 if (get_user(p, &p32->clips))
216 return -EFAULT;
217 uclips = compat_ptr(p);
218 while (clipcount--) {
219 if (copy_in_user(&uclips->c, &kclips->c, sizeof(uclips->c)))
220 return -EFAULT;
221 uclips++;
222 kclips++;
223 }
224 return 0;
225}
226
227struct v4l2_format32 {
228 __u32 type;
229 union {
230 struct v4l2_pix_format pix;
231 struct v4l2_pix_format_mplane pix_mp;
232 struct v4l2_window32 win;
233 struct v4l2_vbi_format vbi;
234 struct v4l2_sliced_vbi_format sliced;
235 struct v4l2_sdr_format sdr;
236 struct v4l2_meta_format meta;
237 __u8 raw_data[200];
238 } fmt;
239};
240
241
242
243
244
245
246
247
248
249
250
251struct v4l2_create_buffers32 {
252 __u32 index;
253 __u32 count;
254 __u32 memory;
255 struct v4l2_format32 format;
256 __u32 capabilities;
257 __u32 reserved[7];
258};
259
260static int __bufsize_v4l2_format(struct v4l2_format32 __user *p32, u32 *size)
261{
262 u32 type;
263
264 if (get_user(type, &p32->type))
265 return -EFAULT;
266
267 switch (type) {
268 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
269 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
270 u32 clipcount;
271
272 if (get_user(clipcount, &p32->fmt.win.clipcount))
273 return -EFAULT;
274 if (clipcount > 2048)
275 return -EINVAL;
276 *size = clipcount * sizeof(struct v4l2_clip);
277 return 0;
278 }
279 default:
280 *size = 0;
281 return 0;
282 }
283}
284
285static int bufsize_v4l2_format(struct v4l2_format32 __user *p32, u32 *size)
286{
287 if (!access_ok(p32, sizeof(*p32)))
288 return -EFAULT;
289 return __bufsize_v4l2_format(p32, size);
290}
291
292static int __get_v4l2_format32(struct v4l2_format __user *p64,
293 struct v4l2_format32 __user *p32,
294 void __user *aux_buf, u32 aux_space)
295{
296 u32 type;
297
298 if (get_user(type, &p32->type) || put_user(type, &p64->type))
299 return -EFAULT;
300
301 switch (type) {
302 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
303 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
304 return copy_in_user(&p64->fmt.pix, &p32->fmt.pix,
305 sizeof(p64->fmt.pix)) ? -EFAULT : 0;
306 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
307 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
308 return copy_in_user(&p64->fmt.pix_mp, &p32->fmt.pix_mp,
309 sizeof(p64->fmt.pix_mp)) ? -EFAULT : 0;
310 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
311 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
312 return get_v4l2_window32(&p64->fmt.win, &p32->fmt.win,
313 aux_buf, aux_space);
314 case V4L2_BUF_TYPE_VBI_CAPTURE:
315 case V4L2_BUF_TYPE_VBI_OUTPUT:
316 return copy_in_user(&p64->fmt.vbi, &p32->fmt.vbi,
317 sizeof(p64->fmt.vbi)) ? -EFAULT : 0;
318 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
319 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
320 return copy_in_user(&p64->fmt.sliced, &p32->fmt.sliced,
321 sizeof(p64->fmt.sliced)) ? -EFAULT : 0;
322 case V4L2_BUF_TYPE_SDR_CAPTURE:
323 case V4L2_BUF_TYPE_SDR_OUTPUT:
324 return copy_in_user(&p64->fmt.sdr, &p32->fmt.sdr,
325 sizeof(p64->fmt.sdr)) ? -EFAULT : 0;
326 case V4L2_BUF_TYPE_META_CAPTURE:
327 case V4L2_BUF_TYPE_META_OUTPUT:
328 return copy_in_user(&p64->fmt.meta, &p32->fmt.meta,
329 sizeof(p64->fmt.meta)) ? -EFAULT : 0;
330 default:
331 return -EINVAL;
332 }
333}
334
335static int get_v4l2_format32(struct v4l2_format __user *p64,
336 struct v4l2_format32 __user *p32,
337 void __user *aux_buf, u32 aux_space)
338{
339 if (!access_ok(p32, sizeof(*p32)))
340 return -EFAULT;
341 return __get_v4l2_format32(p64, p32, aux_buf, aux_space);
342}
343
344static int bufsize_v4l2_create(struct v4l2_create_buffers32 __user *p32,
345 u32 *size)
346{
347 if (!access_ok(p32, sizeof(*p32)))
348 return -EFAULT;
349 return __bufsize_v4l2_format(&p32->format, size);
350}
351
352static int get_v4l2_create32(struct v4l2_create_buffers __user *p64,
353 struct v4l2_create_buffers32 __user *p32,
354 void __user *aux_buf, u32 aux_space)
355{
356 if (!access_ok(p32, sizeof(*p32)) ||
357 copy_in_user(p64, p32,
358 offsetof(struct v4l2_create_buffers32, format)))
359 return -EFAULT;
360 return __get_v4l2_format32(&p64->format, &p32->format,
361 aux_buf, aux_space);
362}
363
364static int __put_v4l2_format32(struct v4l2_format __user *p64,
365 struct v4l2_format32 __user *p32)
366{
367 u32 type;
368
369 if (get_user(type, &p64->type))
370 return -EFAULT;
371
372 switch (type) {
373 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
374 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
375 return copy_in_user(&p32->fmt.pix, &p64->fmt.pix,
376 sizeof(p64->fmt.pix)) ? -EFAULT : 0;
377 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
378 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
379 return copy_in_user(&p32->fmt.pix_mp, &p64->fmt.pix_mp,
380 sizeof(p64->fmt.pix_mp)) ? -EFAULT : 0;
381 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
382 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
383 return put_v4l2_window32(&p64->fmt.win, &p32->fmt.win);
384 case V4L2_BUF_TYPE_VBI_CAPTURE:
385 case V4L2_BUF_TYPE_VBI_OUTPUT:
386 return copy_in_user(&p32->fmt.vbi, &p64->fmt.vbi,
387 sizeof(p64->fmt.vbi)) ? -EFAULT : 0;
388 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
389 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
390 return copy_in_user(&p32->fmt.sliced, &p64->fmt.sliced,
391 sizeof(p64->fmt.sliced)) ? -EFAULT : 0;
392 case V4L2_BUF_TYPE_SDR_CAPTURE:
393 case V4L2_BUF_TYPE_SDR_OUTPUT:
394 return copy_in_user(&p32->fmt.sdr, &p64->fmt.sdr,
395 sizeof(p64->fmt.sdr)) ? -EFAULT : 0;
396 case V4L2_BUF_TYPE_META_CAPTURE:
397 case V4L2_BUF_TYPE_META_OUTPUT:
398 return copy_in_user(&p32->fmt.meta, &p64->fmt.meta,
399 sizeof(p64->fmt.meta)) ? -EFAULT : 0;
400 default:
401 return -EINVAL;
402 }
403}
404
405static int put_v4l2_format32(struct v4l2_format __user *p64,
406 struct v4l2_format32 __user *p32)
407{
408 if (!access_ok(p32, sizeof(*p32)))
409 return -EFAULT;
410 return __put_v4l2_format32(p64, p32);
411}
412
413static int put_v4l2_create32(struct v4l2_create_buffers __user *p64,
414 struct v4l2_create_buffers32 __user *p32)
415{
416 if (!access_ok(p32, sizeof(*p32)) ||
417 copy_in_user(p32, p64,
418 offsetof(struct v4l2_create_buffers32, format)) ||
419 assign_in_user(&p32->capabilities, &p64->capabilities) ||
420 copy_in_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
421 return -EFAULT;
422 return __put_v4l2_format32(&p64->format, &p32->format);
423}
424
425struct v4l2_standard32 {
426 __u32 index;
427 compat_u64 id;
428 __u8 name[24];
429 struct v4l2_fract frameperiod;
430 __u32 framelines;
431 __u32 reserved[4];
432};
433
434static int get_v4l2_standard32(struct v4l2_standard __user *p64,
435 struct v4l2_standard32 __user *p32)
436{
437
438 if (!access_ok(p32, sizeof(*p32)) ||
439 assign_in_user(&p64->index, &p32->index))
440 return -EFAULT;
441 return 0;
442}
443
444static int put_v4l2_standard32(struct v4l2_standard __user *p64,
445 struct v4l2_standard32 __user *p32)
446{
447 if (!access_ok(p32, sizeof(*p32)) ||
448 assign_in_user(&p32->index, &p64->index) ||
449 assign_in_user(&p32->id, &p64->id) ||
450 copy_in_user(p32->name, p64->name, sizeof(p32->name)) ||
451 copy_in_user(&p32->frameperiod, &p64->frameperiod,
452 sizeof(p32->frameperiod)) ||
453 assign_in_user(&p32->framelines, &p64->framelines) ||
454 copy_in_user(p32->reserved, p64->reserved, sizeof(p32->reserved)))
455 return -EFAULT;
456 return 0;
457}
458
459struct v4l2_plane32 {
460 __u32 bytesused;
461 __u32 length;
462 union {
463 __u32 mem_offset;
464 compat_long_t userptr;
465 __s32 fd;
466 } m;
467 __u32 data_offset;
468 __u32 reserved[11];
469};
470
471struct v4l2_buffer32 {
472 __u32 index;
473 __u32 type;
474 __u32 bytesused;
475 __u32 flags;
476 __u32 field;
477 struct compat_timeval timestamp;
478 struct v4l2_timecode timecode;
479 __u32 sequence;
480
481
482 __u32 memory;
483 union {
484 __u32 offset;
485 compat_long_t userptr;
486 compat_caddr_t planes;
487 __s32 fd;
488 } m;
489 __u32 length;
490 __u32 reserved2;
491 __s32 request_fd;
492};
493
494static int get_v4l2_plane32(struct v4l2_plane __user *p64,
495 struct v4l2_plane32 __user *p32,
496 enum v4l2_memory memory)
497{
498 compat_ulong_t p;
499
500 if (copy_in_user(p64, p32, 2 * sizeof(__u32)) ||
501 copy_in_user(&p64->data_offset, &p32->data_offset,
502 sizeof(p64->data_offset)))
503 return -EFAULT;
504
505 switch (memory) {
506 case V4L2_MEMORY_MMAP:
507 case V4L2_MEMORY_OVERLAY:
508 if (copy_in_user(&p64->m.mem_offset, &p32->m.mem_offset,
509 sizeof(p32->m.mem_offset)))
510 return -EFAULT;
511 break;
512 case V4L2_MEMORY_USERPTR:
513 if (get_user(p, &p32->m.userptr) ||
514 put_user((unsigned long)compat_ptr(p), &p64->m.userptr))
515 return -EFAULT;
516 break;
517 case V4L2_MEMORY_DMABUF:
518 if (copy_in_user(&p64->m.fd, &p32->m.fd, sizeof(p32->m.fd)))
519 return -EFAULT;
520 break;
521 }
522
523 return 0;
524}
525
526static int put_v4l2_plane32(struct v4l2_plane __user *p64,
527 struct v4l2_plane32 __user *p32,
528 enum v4l2_memory memory)
529{
530 unsigned long p;
531
532 if (copy_in_user(p32, p64, 2 * sizeof(__u32)) ||
533 copy_in_user(&p32->data_offset, &p64->data_offset,
534 sizeof(p64->data_offset)))
535 return -EFAULT;
536
537 switch (memory) {
538 case V4L2_MEMORY_MMAP:
539 case V4L2_MEMORY_OVERLAY:
540 if (copy_in_user(&p32->m.mem_offset, &p64->m.mem_offset,
541 sizeof(p64->m.mem_offset)))
542 return -EFAULT;
543 break;
544 case V4L2_MEMORY_USERPTR:
545 if (get_user(p, &p64->m.userptr) ||
546 put_user((compat_ulong_t)ptr_to_compat((void __user *)p),
547 &p32->m.userptr))
548 return -EFAULT;
549 break;
550 case V4L2_MEMORY_DMABUF:
551 if (copy_in_user(&p32->m.fd, &p64->m.fd, sizeof(p64->m.fd)))
552 return -EFAULT;
553 break;
554 }
555
556 return 0;
557}
558
559static int bufsize_v4l2_buffer(struct v4l2_buffer32 __user *p32, u32 *size)
560{
561 u32 type;
562 u32 length;
563
564 if (!access_ok(p32, sizeof(*p32)) ||
565 get_user(type, &p32->type) ||
566 get_user(length, &p32->length))
567 return -EFAULT;
568
569 if (V4L2_TYPE_IS_MULTIPLANAR(type)) {
570 if (length > VIDEO_MAX_PLANES)
571 return -EINVAL;
572
573
574
575
576
577 *size = length * sizeof(struct v4l2_plane);
578 } else {
579 *size = 0;
580 }
581 return 0;
582}
583
584static int get_v4l2_buffer32(struct v4l2_buffer __user *p64,
585 struct v4l2_buffer32 __user *p32,
586 void __user *aux_buf, u32 aux_space)
587{
588 u32 type;
589 u32 length;
590 s32 request_fd;
591 enum v4l2_memory memory;
592 struct v4l2_plane32 __user *uplane32;
593 struct v4l2_plane __user *uplane;
594 compat_caddr_t p;
595 int ret;
596
597 if (!access_ok(p32, sizeof(*p32)) ||
598 assign_in_user(&p64->index, &p32->index) ||
599 get_user(type, &p32->type) ||
600 put_user(type, &p64->type) ||
601 assign_in_user(&p64->flags, &p32->flags) ||
602 get_user(memory, &p32->memory) ||
603 put_user(memory, &p64->memory) ||
604 get_user(length, &p32->length) ||
605 put_user(length, &p64->length) ||
606 get_user(request_fd, &p32->request_fd) ||
607 put_user(request_fd, &p64->request_fd))
608 return -EFAULT;
609
610 if (V4L2_TYPE_IS_OUTPUT(type))
611 if (assign_in_user(&p64->bytesused, &p32->bytesused) ||
612 assign_in_user(&p64->field, &p32->field) ||
613 assign_in_user(&p64->timestamp.tv_sec,
614 &p32->timestamp.tv_sec) ||
615 assign_in_user(&p64->timestamp.tv_usec,
616 &p32->timestamp.tv_usec))
617 return -EFAULT;
618
619 if (V4L2_TYPE_IS_MULTIPLANAR(type)) {
620 u32 num_planes = length;
621
622 if (num_planes == 0) {
623
624
625
626
627 return put_user(NULL, &p64->m.planes);
628 }
629 if (num_planes > VIDEO_MAX_PLANES)
630 return -EINVAL;
631
632 if (get_user(p, &p32->m.planes))
633 return -EFAULT;
634
635 uplane32 = compat_ptr(p);
636 if (!access_ok(uplane32,
637 num_planes * sizeof(*uplane32)))
638 return -EFAULT;
639
640
641
642
643
644 if (aux_space < num_planes * sizeof(*uplane))
645 return -EFAULT;
646
647 uplane = aux_buf;
648 if (put_user_force(uplane, &p64->m.planes))
649 return -EFAULT;
650
651 while (num_planes--) {
652 ret = get_v4l2_plane32(uplane, uplane32, memory);
653 if (ret)
654 return ret;
655 uplane++;
656 uplane32++;
657 }
658 } else {
659 switch (memory) {
660 case V4L2_MEMORY_MMAP:
661 case V4L2_MEMORY_OVERLAY:
662 if (assign_in_user(&p64->m.offset, &p32->m.offset))
663 return -EFAULT;
664 break;
665 case V4L2_MEMORY_USERPTR: {
666 compat_ulong_t userptr;
667
668 if (get_user(userptr, &p32->m.userptr) ||
669 put_user((unsigned long)compat_ptr(userptr),
670 &p64->m.userptr))
671 return -EFAULT;
672 break;
673 }
674 case V4L2_MEMORY_DMABUF:
675 if (assign_in_user(&p64->m.fd, &p32->m.fd))
676 return -EFAULT;
677 break;
678 }
679 }
680
681 return 0;
682}
683
684static int put_v4l2_buffer32(struct v4l2_buffer __user *p64,
685 struct v4l2_buffer32 __user *p32)
686{
687 u32 type;
688 u32 length;
689 enum v4l2_memory memory;
690 struct v4l2_plane32 __user *uplane32;
691 struct v4l2_plane *uplane;
692 compat_caddr_t p;
693 int ret;
694
695 if (!access_ok(p32, sizeof(*p32)) ||
696 assign_in_user(&p32->index, &p64->index) ||
697 get_user(type, &p64->type) ||
698 put_user(type, &p32->type) ||
699 assign_in_user(&p32->flags, &p64->flags) ||
700 get_user(memory, &p64->memory) ||
701 put_user(memory, &p32->memory))
702 return -EFAULT;
703
704 if (assign_in_user(&p32->bytesused, &p64->bytesused) ||
705 assign_in_user(&p32->field, &p64->field) ||
706 assign_in_user(&p32->timestamp.tv_sec, &p64->timestamp.tv_sec) ||
707 assign_in_user(&p32->timestamp.tv_usec, &p64->timestamp.tv_usec) ||
708 copy_in_user(&p32->timecode, &p64->timecode, sizeof(p64->timecode)) ||
709 assign_in_user(&p32->sequence, &p64->sequence) ||
710 assign_in_user(&p32->reserved2, &p64->reserved2) ||
711 assign_in_user(&p32->request_fd, &p64->request_fd) ||
712 get_user(length, &p64->length) ||
713 put_user(length, &p32->length))
714 return -EFAULT;
715
716 if (V4L2_TYPE_IS_MULTIPLANAR(type)) {
717 u32 num_planes = length;
718
719 if (num_planes == 0)
720 return 0;
721
722
723
724
725
726
727
728
729 if (get_user(uplane, &p64->m.planes))
730 return -EFAULT;
731 if (get_user(p, &p32->m.planes))
732 return -EFAULT;
733 uplane32 = compat_ptr(p);
734
735 while (num_planes--) {
736 ret = put_v4l2_plane32((void __user *)uplane,
737 uplane32, memory);
738 if (ret)
739 return ret;
740 ++uplane;
741 ++uplane32;
742 }
743 } else {
744 switch (memory) {
745 case V4L2_MEMORY_MMAP:
746 case V4L2_MEMORY_OVERLAY:
747 if (assign_in_user(&p32->m.offset, &p64->m.offset))
748 return -EFAULT;
749 break;
750 case V4L2_MEMORY_USERPTR:
751 if (assign_in_user(&p32->m.userptr, &p64->m.userptr))
752 return -EFAULT;
753 break;
754 case V4L2_MEMORY_DMABUF:
755 if (assign_in_user(&p32->m.fd, &p64->m.fd))
756 return -EFAULT;
757 break;
758 }
759 }
760
761 return 0;
762}
763
764struct v4l2_framebuffer32 {
765 __u32 capability;
766 __u32 flags;
767 compat_caddr_t base;
768 struct {
769 __u32 width;
770 __u32 height;
771 __u32 pixelformat;
772 __u32 field;
773 __u32 bytesperline;
774 __u32 sizeimage;
775 __u32 colorspace;
776 __u32 priv;
777 } fmt;
778};
779
780static int get_v4l2_framebuffer32(struct v4l2_framebuffer __user *p64,
781 struct v4l2_framebuffer32 __user *p32)
782{
783 compat_caddr_t tmp;
784
785 if (!access_ok(p32, sizeof(*p32)) ||
786 get_user(tmp, &p32->base) ||
787 put_user_force(compat_ptr(tmp), &p64->base) ||
788 assign_in_user(&p64->capability, &p32->capability) ||
789 assign_in_user(&p64->flags, &p32->flags) ||
790 copy_in_user(&p64->fmt, &p32->fmt, sizeof(p64->fmt)))
791 return -EFAULT;
792 return 0;
793}
794
795static int put_v4l2_framebuffer32(struct v4l2_framebuffer __user *p64,
796 struct v4l2_framebuffer32 __user *p32)
797{
798 void *base;
799
800 if (!access_ok(p32, sizeof(*p32)) ||
801 get_user(base, &p64->base) ||
802 put_user(ptr_to_compat((void __user *)base), &p32->base) ||
803 assign_in_user(&p32->capability, &p64->capability) ||
804 assign_in_user(&p32->flags, &p64->flags) ||
805 copy_in_user(&p32->fmt, &p64->fmt, sizeof(p64->fmt)))
806 return -EFAULT;
807 return 0;
808}
809
810struct v4l2_input32 {
811 __u32 index;
812 __u8 name[32];
813 __u32 type;
814 __u32 audioset;
815 __u32 tuner;
816 compat_u64 std;
817 __u32 status;
818 __u32 capabilities;
819 __u32 reserved[3];
820};
821
822
823
824
825
826static inline int get_v4l2_input32(struct v4l2_input __user *p64,
827 struct v4l2_input32 __user *p32)
828{
829 if (copy_in_user(p64, p32, sizeof(*p32)))
830 return -EFAULT;
831 return 0;
832}
833
834static inline int put_v4l2_input32(struct v4l2_input __user *p64,
835 struct v4l2_input32 __user *p32)
836{
837 if (copy_in_user(p32, p64, sizeof(*p32)))
838 return -EFAULT;
839 return 0;
840}
841
842struct v4l2_ext_controls32 {
843 __u32 which;
844 __u32 count;
845 __u32 error_idx;
846 __s32 request_fd;
847 __u32 reserved[1];
848 compat_caddr_t controls;
849};
850
851struct v4l2_ext_control32 {
852 __u32 id;
853 __u32 size;
854 __u32 reserved2[1];
855 union {
856 __s32 value;
857 __s64 value64;
858 compat_caddr_t string;
859 };
860} __attribute__ ((packed));
861
862
863static inline bool ctrl_is_pointer(struct file *file, u32 id)
864{
865 struct video_device *vdev = video_devdata(file);
866 struct v4l2_fh *fh = NULL;
867 struct v4l2_ctrl_handler *hdl = NULL;
868 struct v4l2_query_ext_ctrl qec = { id };
869 const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops;
870
871 if (test_bit(V4L2_FL_USES_V4L2_FH, &vdev->flags))
872 fh = file->private_data;
873
874 if (fh && fh->ctrl_handler)
875 hdl = fh->ctrl_handler;
876 else if (vdev->ctrl_handler)
877 hdl = vdev->ctrl_handler;
878
879 if (hdl) {
880 struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, id);
881
882 return ctrl && ctrl->is_ptr;
883 }
884
885 if (!ops || !ops->vidioc_query_ext_ctrl)
886 return false;
887
888 return !ops->vidioc_query_ext_ctrl(file, fh, &qec) &&
889 (qec.flags & V4L2_CTRL_FLAG_HAS_PAYLOAD);
890}
891
892static int bufsize_v4l2_ext_controls(struct v4l2_ext_controls32 __user *p32,
893 u32 *size)
894{
895 u32 count;
896
897 if (!access_ok(p32, sizeof(*p32)) ||
898 get_user(count, &p32->count))
899 return -EFAULT;
900 if (count > V4L2_CID_MAX_CTRLS)
901 return -EINVAL;
902 *size = count * sizeof(struct v4l2_ext_control);
903 return 0;
904}
905
906static int get_v4l2_ext_controls32(struct file *file,
907 struct v4l2_ext_controls __user *p64,
908 struct v4l2_ext_controls32 __user *p32,
909 void __user *aux_buf, u32 aux_space)
910{
911 struct v4l2_ext_control32 __user *ucontrols;
912 struct v4l2_ext_control __user *kcontrols;
913 u32 count;
914 u32 n;
915 compat_caddr_t p;
916
917 if (!access_ok(p32, sizeof(*p32)) ||
918 assign_in_user(&p64->which, &p32->which) ||
919 get_user(count, &p32->count) ||
920 put_user(count, &p64->count) ||
921 assign_in_user(&p64->error_idx, &p32->error_idx) ||
922 assign_in_user(&p64->request_fd, &p32->request_fd) ||
923 copy_in_user(p64->reserved, p32->reserved, sizeof(p64->reserved)))
924 return -EFAULT;
925
926 if (count == 0)
927 return put_user(NULL, &p64->controls);
928 if (count > V4L2_CID_MAX_CTRLS)
929 return -EINVAL;
930 if (get_user(p, &p32->controls))
931 return -EFAULT;
932 ucontrols = compat_ptr(p);
933 if (!access_ok(ucontrols, count * sizeof(*ucontrols)))
934 return -EFAULT;
935 if (aux_space < count * sizeof(*kcontrols))
936 return -EFAULT;
937 kcontrols = aux_buf;
938 if (put_user_force(kcontrols, &p64->controls))
939 return -EFAULT;
940
941 for (n = 0; n < count; n++) {
942 u32 id;
943
944 if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols)))
945 return -EFAULT;
946
947 if (get_user(id, &kcontrols->id))
948 return -EFAULT;
949
950 if (ctrl_is_pointer(file, id)) {
951 void __user *s;
952
953 if (get_user(p, &ucontrols->string))
954 return -EFAULT;
955 s = compat_ptr(p);
956 if (put_user(s, &kcontrols->string))
957 return -EFAULT;
958 }
959 ucontrols++;
960 kcontrols++;
961 }
962 return 0;
963}
964
965static int put_v4l2_ext_controls32(struct file *file,
966 struct v4l2_ext_controls __user *p64,
967 struct v4l2_ext_controls32 __user *p32)
968{
969 struct v4l2_ext_control32 __user *ucontrols;
970 struct v4l2_ext_control *kcontrols;
971 u32 count;
972 u32 n;
973 compat_caddr_t p;
974
975
976
977
978
979
980
981
982
983 if (!access_ok(p32, sizeof(*p32)) ||
984 assign_in_user(&p32->which, &p64->which) ||
985 get_user(count, &p64->count) ||
986 put_user(count, &p32->count) ||
987 assign_in_user(&p32->error_idx, &p64->error_idx) ||
988 assign_in_user(&p32->request_fd, &p64->request_fd) ||
989 copy_in_user(p32->reserved, p64->reserved, sizeof(p32->reserved)) ||
990 get_user(kcontrols, &p64->controls))
991 return -EFAULT;
992
993 if (!count || count > (U32_MAX/sizeof(*ucontrols)))
994 return 0;
995 if (get_user(p, &p32->controls))
996 return -EFAULT;
997 ucontrols = compat_ptr(p);
998 if (!access_ok(ucontrols, count * sizeof(*ucontrols)))
999 return -EFAULT;
1000
1001 for (n = 0; n < count; n++) {
1002 unsigned int size = sizeof(*ucontrols);
1003 u32 id;
1004
1005 if (get_user_cast(id, &kcontrols->id) ||
1006 put_user(id, &ucontrols->id) ||
1007 assign_in_user_cast(&ucontrols->size, &kcontrols->size) ||
1008 copy_in_user(&ucontrols->reserved2,
1009 (void __user *)&kcontrols->reserved2,
1010 sizeof(ucontrols->reserved2)))
1011 return -EFAULT;
1012
1013
1014
1015
1016
1017
1018 if (ctrl_is_pointer(file, id))
1019 size -= sizeof(ucontrols->value64);
1020
1021 if (copy_in_user(ucontrols,
1022 (void __user *)kcontrols, size))
1023 return -EFAULT;
1024
1025 ucontrols++;
1026 kcontrols++;
1027 }
1028 return 0;
1029}
1030
1031struct v4l2_event32 {
1032 __u32 type;
1033 union {
1034 compat_s64 value64;
1035 __u8 data[64];
1036 } u;
1037 __u32 pending;
1038 __u32 sequence;
1039 struct compat_timespec timestamp;
1040 __u32 id;
1041 __u32 reserved[8];
1042};
1043
1044static int put_v4l2_event32(struct v4l2_event __user *p64,
1045 struct v4l2_event32 __user *p32)
1046{
1047 if (!access_ok(p32, sizeof(*p32)) ||
1048 assign_in_user(&p32->type, &p64->type) ||
1049 copy_in_user(&p32->u, &p64->u, sizeof(p64->u)) ||
1050 assign_in_user(&p32->pending, &p64->pending) ||
1051 assign_in_user(&p32->sequence, &p64->sequence) ||
1052 assign_in_user(&p32->timestamp.tv_sec, &p64->timestamp.tv_sec) ||
1053 assign_in_user(&p32->timestamp.tv_nsec, &p64->timestamp.tv_nsec) ||
1054 assign_in_user(&p32->id, &p64->id) ||
1055 copy_in_user(p32->reserved, p64->reserved, sizeof(p32->reserved)))
1056 return -EFAULT;
1057 return 0;
1058}
1059
1060struct v4l2_edid32 {
1061 __u32 pad;
1062 __u32 start_block;
1063 __u32 blocks;
1064 __u32 reserved[5];
1065 compat_caddr_t edid;
1066};
1067
1068static int get_v4l2_edid32(struct v4l2_edid __user *p64,
1069 struct v4l2_edid32 __user *p32)
1070{
1071 compat_uptr_t tmp;
1072
1073 if (!access_ok(p32, sizeof(*p32)) ||
1074 assign_in_user(&p64->pad, &p32->pad) ||
1075 assign_in_user(&p64->start_block, &p32->start_block) ||
1076 assign_in_user_cast(&p64->blocks, &p32->blocks) ||
1077 get_user(tmp, &p32->edid) ||
1078 put_user_force(compat_ptr(tmp), &p64->edid) ||
1079 copy_in_user(p64->reserved, p32->reserved, sizeof(p64->reserved)))
1080 return -EFAULT;
1081 return 0;
1082}
1083
1084static int put_v4l2_edid32(struct v4l2_edid __user *p64,
1085 struct v4l2_edid32 __user *p32)
1086{
1087 void *edid;
1088
1089 if (!access_ok(p32, sizeof(*p32)) ||
1090 assign_in_user(&p32->pad, &p64->pad) ||
1091 assign_in_user(&p32->start_block, &p64->start_block) ||
1092 assign_in_user(&p32->blocks, &p64->blocks) ||
1093 get_user(edid, &p64->edid) ||
1094 put_user(ptr_to_compat((void __user *)edid), &p32->edid) ||
1095 copy_in_user(p32->reserved, p64->reserved, sizeof(p32->reserved)))
1096 return -EFAULT;
1097 return 0;
1098}
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108#define VIDIOC_G_FMT32 _IOWR('V', 4, struct v4l2_format32)
1109#define VIDIOC_S_FMT32 _IOWR('V', 5, struct v4l2_format32)
1110#define VIDIOC_QUERYBUF32 _IOWR('V', 9, struct v4l2_buffer32)
1111#define VIDIOC_G_FBUF32 _IOR ('V', 10, struct v4l2_framebuffer32)
1112#define VIDIOC_S_FBUF32 _IOW ('V', 11, struct v4l2_framebuffer32)
1113#define VIDIOC_QBUF32 _IOWR('V', 15, struct v4l2_buffer32)
1114#define VIDIOC_DQBUF32 _IOWR('V', 17, struct v4l2_buffer32)
1115#define VIDIOC_ENUMSTD32 _IOWR('V', 25, struct v4l2_standard32)
1116#define VIDIOC_ENUMINPUT32 _IOWR('V', 26, struct v4l2_input32)
1117#define VIDIOC_G_EDID32 _IOWR('V', 40, struct v4l2_edid32)
1118#define VIDIOC_S_EDID32 _IOWR('V', 41, struct v4l2_edid32)
1119#define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32)
1120#define VIDIOC_G_EXT_CTRLS32 _IOWR('V', 71, struct v4l2_ext_controls32)
1121#define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32)
1122#define VIDIOC_TRY_EXT_CTRLS32 _IOWR('V', 73, struct v4l2_ext_controls32)
1123#define VIDIOC_DQEVENT32 _IOR ('V', 89, struct v4l2_event32)
1124#define VIDIOC_CREATE_BUFS32 _IOWR('V', 92, struct v4l2_create_buffers32)
1125#define VIDIOC_PREPARE_BUF32 _IOWR('V', 93, struct v4l2_buffer32)
1126
1127#define VIDIOC_OVERLAY32 _IOW ('V', 14, s32)
1128#define VIDIOC_STREAMON32 _IOW ('V', 18, s32)
1129#define VIDIOC_STREAMOFF32 _IOW ('V', 19, s32)
1130#define VIDIOC_G_INPUT32 _IOR ('V', 38, s32)
1131#define VIDIOC_S_INPUT32 _IOWR('V', 39, s32)
1132#define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32)
1133#define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32)
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150static int alloc_userspace(unsigned int size, u32 aux_space,
1151 void __user **new_p64)
1152{
1153 *new_p64 = compat_alloc_user_space(size + aux_space);
1154 if (!*new_p64)
1155 return -ENOMEM;
1156 if (clear_user(*new_p64, size))
1157 return -EFAULT;
1158 return 0;
1159}
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1179{
1180 void __user *p32 = compat_ptr(arg);
1181 void __user *new_p64 = NULL;
1182 void __user *aux_buf;
1183 u32 aux_space;
1184 int compatible_arg = 1;
1185 long err = 0;
1186
1187
1188
1189
1190 switch (cmd) {
1191 case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;
1192 case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break;
1193 case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break;
1194 case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break;
1195 case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break;
1196 case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break;
1197 case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break;
1198 case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break;
1199 case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break;
1200 case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break;
1201 case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break;
1202 case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break;
1203 case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break;
1204 case VIDIOC_DQEVENT32: cmd = VIDIOC_DQEVENT; break;
1205 case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break;
1206 case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break;
1207 case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break;
1208 case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break;
1209 case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
1210 case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
1211 case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
1212 case VIDIOC_CREATE_BUFS32: cmd = VIDIOC_CREATE_BUFS; break;
1213 case VIDIOC_PREPARE_BUF32: cmd = VIDIOC_PREPARE_BUF; break;
1214 case VIDIOC_G_EDID32: cmd = VIDIOC_G_EDID; break;
1215 case VIDIOC_S_EDID32: cmd = VIDIOC_S_EDID; break;
1216 }
1217
1218
1219
1220
1221
1222
1223 switch (cmd) {
1224 case VIDIOC_OVERLAY:
1225 case VIDIOC_STREAMON:
1226 case VIDIOC_STREAMOFF:
1227 case VIDIOC_S_INPUT:
1228 case VIDIOC_S_OUTPUT:
1229 err = alloc_userspace(sizeof(unsigned int), 0, &new_p64);
1230 if (!err && assign_in_user((unsigned int __user *)new_p64,
1231 (compat_uint_t __user *)p32))
1232 err = -EFAULT;
1233 compatible_arg = 0;
1234 break;
1235
1236 case VIDIOC_G_INPUT:
1237 case VIDIOC_G_OUTPUT:
1238 err = alloc_userspace(sizeof(unsigned int), 0, &new_p64);
1239 compatible_arg = 0;
1240 break;
1241
1242 case VIDIOC_G_EDID:
1243 case VIDIOC_S_EDID:
1244 err = alloc_userspace(sizeof(struct v4l2_edid), 0, &new_p64);
1245 if (!err)
1246 err = get_v4l2_edid32(new_p64, p32);
1247 compatible_arg = 0;
1248 break;
1249
1250 case VIDIOC_G_FMT:
1251 case VIDIOC_S_FMT:
1252 case VIDIOC_TRY_FMT:
1253 err = bufsize_v4l2_format(p32, &aux_space);
1254 if (!err)
1255 err = alloc_userspace(sizeof(struct v4l2_format),
1256 aux_space, &new_p64);
1257 if (!err) {
1258 aux_buf = new_p64 + sizeof(struct v4l2_format);
1259 err = get_v4l2_format32(new_p64, p32,
1260 aux_buf, aux_space);
1261 }
1262 compatible_arg = 0;
1263 break;
1264
1265 case VIDIOC_CREATE_BUFS:
1266 err = bufsize_v4l2_create(p32, &aux_space);
1267 if (!err)
1268 err = alloc_userspace(sizeof(struct v4l2_create_buffers),
1269 aux_space, &new_p64);
1270 if (!err) {
1271 aux_buf = new_p64 + sizeof(struct v4l2_create_buffers);
1272 err = get_v4l2_create32(new_p64, p32,
1273 aux_buf, aux_space);
1274 }
1275 compatible_arg = 0;
1276 break;
1277
1278 case VIDIOC_PREPARE_BUF:
1279 case VIDIOC_QUERYBUF:
1280 case VIDIOC_QBUF:
1281 case VIDIOC_DQBUF:
1282 err = bufsize_v4l2_buffer(p32, &aux_space);
1283 if (!err)
1284 err = alloc_userspace(sizeof(struct v4l2_buffer),
1285 aux_space, &new_p64);
1286 if (!err) {
1287 aux_buf = new_p64 + sizeof(struct v4l2_buffer);
1288 err = get_v4l2_buffer32(new_p64, p32,
1289 aux_buf, aux_space);
1290 }
1291 compatible_arg = 0;
1292 break;
1293
1294 case VIDIOC_S_FBUF:
1295 err = alloc_userspace(sizeof(struct v4l2_framebuffer), 0,
1296 &new_p64);
1297 if (!err)
1298 err = get_v4l2_framebuffer32(new_p64, p32);
1299 compatible_arg = 0;
1300 break;
1301
1302 case VIDIOC_G_FBUF:
1303 err = alloc_userspace(sizeof(struct v4l2_framebuffer), 0,
1304 &new_p64);
1305 compatible_arg = 0;
1306 break;
1307
1308 case VIDIOC_ENUMSTD:
1309 err = alloc_userspace(sizeof(struct v4l2_standard), 0,
1310 &new_p64);
1311 if (!err)
1312 err = get_v4l2_standard32(new_p64, p32);
1313 compatible_arg = 0;
1314 break;
1315
1316 case VIDIOC_ENUMINPUT:
1317 err = alloc_userspace(sizeof(struct v4l2_input), 0, &new_p64);
1318 if (!err)
1319 err = get_v4l2_input32(new_p64, p32);
1320 compatible_arg = 0;
1321 break;
1322
1323 case VIDIOC_G_EXT_CTRLS:
1324 case VIDIOC_S_EXT_CTRLS:
1325 case VIDIOC_TRY_EXT_CTRLS:
1326 err = bufsize_v4l2_ext_controls(p32, &aux_space);
1327 if (!err)
1328 err = alloc_userspace(sizeof(struct v4l2_ext_controls),
1329 aux_space, &new_p64);
1330 if (!err) {
1331 aux_buf = new_p64 + sizeof(struct v4l2_ext_controls);
1332 err = get_v4l2_ext_controls32(file, new_p64, p32,
1333 aux_buf, aux_space);
1334 }
1335 compatible_arg = 0;
1336 break;
1337 case VIDIOC_DQEVENT:
1338 err = alloc_userspace(sizeof(struct v4l2_event), 0, &new_p64);
1339 compatible_arg = 0;
1340 break;
1341 }
1342 if (err)
1343 return err;
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354 if (compatible_arg)
1355 err = native_ioctl(file, cmd, (unsigned long)p32);
1356 else
1357 err = native_ioctl(file, cmd, (unsigned long)new_p64);
1358
1359 if (err == -ENOTTY)
1360 return err;
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372 switch (cmd) {
1373 case VIDIOC_G_EXT_CTRLS:
1374 case VIDIOC_S_EXT_CTRLS:
1375 case VIDIOC_TRY_EXT_CTRLS:
1376 if (put_v4l2_ext_controls32(file, new_p64, p32))
1377 err = -EFAULT;
1378 break;
1379 case VIDIOC_S_EDID:
1380 if (put_v4l2_edid32(new_p64, p32))
1381 err = -EFAULT;
1382 break;
1383 }
1384 if (err)
1385 return err;
1386
1387
1388
1389
1390
1391 switch (cmd) {
1392 case VIDIOC_S_INPUT:
1393 case VIDIOC_S_OUTPUT:
1394 case VIDIOC_G_INPUT:
1395 case VIDIOC_G_OUTPUT:
1396 if (assign_in_user((compat_uint_t __user *)p32,
1397 ((unsigned int __user *)new_p64)))
1398 err = -EFAULT;
1399 break;
1400
1401 case VIDIOC_G_FBUF:
1402 err = put_v4l2_framebuffer32(new_p64, p32);
1403 break;
1404
1405 case VIDIOC_DQEVENT:
1406 err = put_v4l2_event32(new_p64, p32);
1407 break;
1408
1409 case VIDIOC_G_EDID:
1410 err = put_v4l2_edid32(new_p64, p32);
1411 break;
1412
1413 case VIDIOC_G_FMT:
1414 case VIDIOC_S_FMT:
1415 case VIDIOC_TRY_FMT:
1416 err = put_v4l2_format32(new_p64, p32);
1417 break;
1418
1419 case VIDIOC_CREATE_BUFS:
1420 err = put_v4l2_create32(new_p64, p32);
1421 break;
1422
1423 case VIDIOC_PREPARE_BUF:
1424 case VIDIOC_QUERYBUF:
1425 case VIDIOC_QBUF:
1426 case VIDIOC_DQBUF:
1427 err = put_v4l2_buffer32(new_p64, p32);
1428 break;
1429
1430 case VIDIOC_ENUMSTD:
1431 err = put_v4l2_standard32(new_p64, p32);
1432 break;
1433
1434 case VIDIOC_ENUMINPUT:
1435 err = put_v4l2_input32(new_p64, p32);
1436 break;
1437 }
1438 return err;
1439}
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
1456{
1457 struct video_device *vdev = video_devdata(file);
1458 long ret = -ENOIOCTLCMD;
1459
1460 if (!file->f_op->unlocked_ioctl)
1461 return ret;
1462
1463 if (_IOC_TYPE(cmd) == 'V' && _IOC_NR(cmd) < BASE_VIDIOC_PRIVATE)
1464 ret = do_video_ioctl(file, cmd, arg);
1465 else if (vdev->fops->compat_ioctl32)
1466 ret = vdev->fops->compat_ioctl32(file, cmd, arg);
1467
1468 if (ret == -ENOIOCTLCMD)
1469 pr_debug("compat_ioctl32: unknown ioctl '%c', dir=%d, #%d (0x%08x)\n",
1470 _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), cmd);
1471 return ret;
1472}
1473EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32);
1474