aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/compat_ioctl32.c
blob: 54de0cd482e926c1f31f230ea823b90e3e77d078 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
/*
 * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
 *	Separated from fs stuff by Arnd Bergmann <arnd@arndb.de>
 *
 * Copyright (C) 1997-2000  Jakub Jelinek  (jakub@redhat.com)
 * Copyright (C) 1998  Eddie C. Dost  (ecd@skynet.be)
 * Copyright (C) 2001,2002  Andi Kleen, SuSE Labs
 * Copyright (C) 2003       Pavel Machek (pavel@suse.cz)
 * Copyright (C) 2005       Philippe De Muyter (phdm@macqel.be)
 *
 * These routines maintain argument size conversion between 32bit and 64bit
 * ioctls.
 */

#include <linux/compat.h>
#include <linux/videodev.h>
#include <linux/videodev2.h>
#include <linux/module.h>
#include <linux/smp_lock.h>
#include <media/v4l2-common.h>

#ifdef CONFIG_COMPAT

#ifdef CONFIG_VIDEO_V4L1_COMPAT
struct video_tuner32 {
	compat_int_t tuner;
	char name[32];
	compat_ulong_t rangelow, rangehigh;
	u32 flags;	/* It is really u32 in videodev.h */
	u16 mode, signal;
};

static int get_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
{
	if(!access_ok(VERIFY_READ, up, sizeof(struct video_tuner32)) ||
		get_user(kp->tuner, &up->tuner) ||
		copy_from_user(kp->name, up->name, 32) ||
		get_user(kp->rangelow, &up->rangelow) ||
		get_user(kp->rangehigh, &up->rangehigh) ||
		get_user(kp->flags, &up->flags) ||
		get_user(kp->mode, &up->mode) ||
		get_user(kp->signal, &up->signal))
		return -EFAULT;
	return 0;
}

static int put_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
{
	if(!access_ok(VERIFY_WRITE, up, sizeof(struct video_tuner32)) ||
		put_user(kp->tuner, &up->tuner) ||
		copy_to_user(up->name, kp->name, 32) ||
		put_user(kp->rangelow, &up->rangelow) ||
		put_user(kp->rangehigh, &up->rangehigh) ||
		put_user(kp->flags, &up->flags) ||
		put_user(kp->mode, &up->mode) ||
		put_user(kp->signal, &up->signal))
			return -EFAULT;
	return 0;
}


struct video_buffer32 {
	compat_caddr_t base;
	compat_int_t height, width, depth, bytesperline;
};

static int get_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
{
	u32 tmp;

	if (!access_ok(VERIFY_READ, up, sizeof(struct video_buffer32)) ||
		get_user(tmp, &up->base) ||
		get_user(kp->height, &up->height) ||
		get_user(kp->width, &up->width) ||
		get_user(kp->depth, &up->depth) ||
		get_user(kp->bytesperline, &up->bytesperline))
			return -EFAULT;

	/* This is actually a physical address stored
	 * as a void pointer.
	 */
	kp->base = (void *)(unsigned long) tmp;

	return 0;
}

static int put_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
{
	u32 tmp = (u32)((unsigned long)kp->base);

	if(!access_ok(VERIFY_WRITE, up, sizeof(struct video_buffer32)) ||
		put_user(tmp, &up->base) ||
		put_user(kp->height, &up->height) ||
		put_user(kp->width, &up->width) ||
		put_user(kp->depth, &up->depth) ||
		put_user(kp->bytesperline, &up->bytesperline))
			return -EFAULT;
	return 0;
}

struct video_clip32 {
	s32 x, y, width, height;	/* Its really s32 in videodev.h */
	compat_caddr_t next;
};

struct video_window32 {
	u32 x, y, width, height, chromakey, flags;
	compat_caddr_t clips;
	compat_int_t clipcount;
};
#endif

static int native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	int ret = -ENOIOCTLCMD;

	if (file->f_op->unlocked_ioctl)
		ret = file->f_op->unlocked_ioctl(file, cmd, arg);
	else if (file->f_op->ioctl) {
		lock_kernel();
		ret = file->f_op->ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
		unlock_kernel();
	}

	return ret;
}


#ifdef CONFIG_VIDEO_V4L1_COMPAT
/* You get back everything except the clips... */
static int put_video_window32(struct video_window *kp, struct video_window32 __user *up)
{
	if(!access_ok(VERIFY_WRITE, up, sizeof(struct video_window32)) ||
		put_user(kp->x, &up->x) ||
		put_user(kp->y, &up->y) ||
		put_user(kp->width, &up->width) ||
		put_user(kp->height, &up->height) ||
		put_user(kp->chromakey, &up->chromakey) ||
		put_user(kp->flags, &up->flags) ||
		put_user(kp->clipcount, &up->clipcount))
			return -EFAULT;
	return 0;
}
#endif

struct v4l2_clip32
{
	struct v4l2_rect        c;
	compat_caddr_t 		next;
};

struct v4l2_window32
{
	struct v4l2_rect        w;
	enum v4l2_field  	field;
	__u32			chromakey;
	compat_caddr_t		clips; /* actually struct v4l2_clip32 * */
	__u32			clipcount;
	compat_caddr_t		bitmap;
};

static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
{
	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
		copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
		get_user(kp->field, &up->field) ||
		get_user(kp->chromakey, &up->chromakey) ||
		get_user(kp->clipcount, &up->clipcount))
			return -EFAULT;
	if (kp->clipcount > 2048)
		return -EINVAL;
	if (kp->clipcount) {
		struct v4l2_clip32 __user *uclips;
		struct v4l2_clip __user *kclips;
		int n = kp->clipcount;
		compat_caddr_t p;

		if (get_user(p, &up->clips))
			return -EFAULT;
		uclips = compat_ptr(p);
		kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
		kp->clips = kclips;
		while (--n >= 0) {
			if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
				return -EFAULT;
			if (put_user(n ? kclips + 1 : NULL, &kclips->next))
				return -EFAULT;
			uclips += 1;
			kclips += 1;
		}
	} else
		kp->clips = NULL;
	return 0;
}

static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
{
	if (copy_to_user(&up->w, &kp->w, sizeof(up->w)) ||
		put_user(kp->field, &up->field) ||
		put_user(kp->chromakey, &up->chromakey) ||
		put_user(kp->clipcount, &up->clipcount))
			return -EFAULT;
	return 0;
}

static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
{
	if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
		return -EFAULT;
	return 0;
}

static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
{
	if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
		return -EFAULT;
	return 0;
}

static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
{
	if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
		return -EFAULT;
	return 0;
}

static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
{
	if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
		return -EFAULT;
	return 0;
}

struct v4l2_format32
{
	enum v4l2_buf_type type;
	union
	{
		struct v4l2_pix_format	pix;  // V4L2_BUF_TYPE_VIDEO_CAPTURE
		struct v4l2_window32	win;  // V4L2_BUF_TYPE_VIDEO_OVERLAY
		struct v4l2_vbi_format	vbi;  // V4L2_BUF_TYPE_VBI_CAPTURE
		__u8	raw_data[200];        // user-defined
	} fmt;
};

static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
{
	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) ||
			get_user(kp->type, &up->type))
			return -EFAULT;
	switch (kp->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
		return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
	case V4L2_BUF_TYPE_VBI_CAPTURE:
		return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
	default:
		printk("compat_ioctl : unexpected VIDIOC_FMT type %d\n",
								kp->type);
		return -ENXIO;
	}
}

static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
{
	if(!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) ||
		put_user(kp->type, &up->type))
		return -EFAULT;
	switch (kp->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
		return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
	case V4L2_BUF_TYPE_VBI_CAPTURE:
		return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
	default:
		return -ENXIO;
	}
}

static inline int get_v4l2_standard(struct v4l2_standard *kp, struct v4l2_standard __user *up)
{
	if (copy_from_user(kp, up, sizeof(struct v4l2_standard)))
		return -EFAULT;
	return 0;

}

static inline int put_v4l2_standard(struct v4l2_standard *kp, struct v4l2_standard __user *up)
{
	if (copy_to_user(up, kp, sizeof(struct v4l2_standard)))
		return -EFAULT;
	return 0;
}

struct v4l2_standard32
{
	__u32		     index;
	__u32		     id[2]; /* __u64 would get the alignment wrong */
	__u8		     name[24];
	struct v4l2_fract    frameperiod; /* Frames, not fields */
	__u32		     framelines;
	__u32		     reserved[4];
};

static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
{
	/* other fields are not set by the user, nor used by the driver */
	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
		get_user(kp->index, &up->index))
		return -EFAULT;
	return 0;
}

static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
{
	if(!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
		put_user(kp->index, &up->index) ||
		copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
		copy_to_user(up->name, kp->name, 24) ||
		copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
		put_user(kp->framelines, &up->framelines) ||
		copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
			return -EFAULT;
	return 0;
}

static inline int get_v4l2_tuner(struct v4l2_tuner *kp, struct v4l2_tuner __user *up)
{
	if (copy_from_user(kp, up, sizeof(struct v4l2_tuner)))
		return -EFAULT;
	return 0;

}

static inline int put_v4l2_tuner(struct v4l2_tuner *kp, struct v4l2_tuner __user *up)
{
	if (copy_to_user(up, kp, sizeof(struct v4l2_tuner)))
		return -EFAULT;
	return 0;
}

struct v4l2_buffer32
{
	__u32			index;
	enum v4l2_buf_type      type;
	__u32			bytesused;
	__u32			flags;
	enum v4l2_field		field;
	struct compat_timeval	timestamp;
	struct v4l2_timecode	timecode;
	__u32			sequence;

	/* memory location */
	enum v4l2_memory        memory;
	union {
		__u32           offset;
		compat_long_t   userptr;
	} m;
	__u32			length;
	__u32			input;
	__u32			reserved;
};

static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
{

	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
		get_user(kp->index, &up->index) ||
		get_user(kp->type, &up->type) ||
		get_user(kp->flags, &up->flags) ||
		get_user(kp->memory, &up->memory) ||
		get_user(kp->input, &up->input))
			return -EFAULT;
	switch(kp->memory) {
	case V4L2_MEMORY_MMAP:
		break;
	case V4L2_MEMORY_USERPTR:
		{
		compat_long_t tmp;

		if (get_user(kp->length, &up->length) ||
		    get_user(tmp, &up->m.userptr))
			return -EFAULT;

		kp->m.userptr = (unsigned long)compat_ptr(tmp);
		}
		break;
	case V4L2_MEMORY_OVERLAY:
		if(get_user(kp->m.offset, &up->m.offset))
			return -EFAULT;
		break;
	}
	return 0;
}

static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
{
	if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
		put_user(kp->index, &up->index) ||
		put_user(kp->type, &up->type) ||
		put_user(kp->flags, &up->flags) ||
		put_user(kp->memory, &up->memory) ||
		put_user(kp->input, &up->input))
			return -EFAULT;
	switch(kp->memory) {
	case V4L2_MEMORY_MMAP:
		if (put_user(kp->length, &up->length) ||
			put_user(kp->m.offset, &up->m.offset))
			return -EFAULT;
		break;
	case V4L2_MEMORY_USERPTR:
		if (put_user(kp->length, &up->length) ||
			put_user(kp->m.userptr, &up->m.userptr))
			return -EFAULT;
		break;
	case V4L2_MEMORY_OVERLAY:
		if (put_user(kp->m.offset, &up->m.offset))
			return -EFAULT;
		break;
	}
	if (put_user(kp->bytesused, &up->bytesused) ||
		put_user(kp->field, &up->field) ||
		put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
		put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
		copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
		put_user(kp->sequence, &up->sequence) ||
		put_user(kp->reserved, &up->reserved))
			return -EFAULT;
	return 0;
}

struct v4l2_framebuffer32
{
	__u32			capability;
	__u32			flags;
	compat_caddr_t 		base;
	struct v4l2_pix_format	fmt;
};

static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
{
	u32 tmp;

	if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
		get_user(tmp, &up->base) ||
		get_user(kp->capability, &up->capability) ||
		get_user(kp->flags, &up->flags))
			return -EFAULT;
	kp->base = compat_ptr(tmp);
	get_v4l2_pix_format(&kp->fmt, &up->fmt);
	return 0;
}

static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
{
	u32 tmp = (u32)((unsigned long)kp->base);

	if(!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
		put_user(tmp, &up->base) ||
		put_user(kp->capability, &up->capability) ||
		put_user(kp->flags, &up->flags))
			return -EFAULT;
	put_v4l2_pix_format(&kp->fmt, &up->fmt);
	return 0;
}

static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input __user *up)
{
	if (copy_from_user(kp, up, sizeof(struct v4l2_input) - 4))
		return -EFAULT;
	return 0;
}

static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input __user *up)
{
	if (copy_to_user(up, kp, sizeof(struct v4l2_input) - 4))
		return -EFAULT;
	return 0;
}

static inline int get_v4l2_input(struct v4l2_input *kp, struct v4l2_input __user *up)
{
	if (copy_from_user(kp, up, sizeof(struct v4l2_input)))
		return -EFAULT;
	return 0;
}

static inline int put_v4l2_input(struct v4l2_input *kp, struct v4l2_input __user *up)
{
	if (copy_to_user(up, kp, sizeof(struct v4l2_input)))
		return -EFAULT;
	return 0;
}

#ifdef CONFIG_VIDEO_V4L1_COMPAT
struct video_code32
{
	char		loadwhat[16];	/* name or tag of file being passed */
	compat_int_t	datasize;
	unsigned char	*data;
};

static inline int microcode32(struct video_code *kp, struct video_code32 __user *up)
{
	if(!access_ok(VERIFY_READ, up, sizeof(struct video_code32)) ||
		copy_from_user(kp->loadwhat, up->loadwhat, sizeof (up->loadwhat)) ||
		get_user(kp->datasize, &up->datasize) ||
		copy_from_user(kp->data, up->data, up->datasize))
			return -EFAULT;
	return 0;
}

#define VIDIOCGTUNER32		_IOWR('v',4, struct video_tuner32)
#define VIDIOCSTUNER32		_IOW('v',5, struct video_tuner32)
#define VIDIOCGWIN32		_IOR('v',9, struct video_window32)
#define VIDIOCSWIN32		_IOW('v',10, struct video_window32)
#define VIDIOCGFBUF32		_IOR('v',11, struct video_buffer32)
#define VIDIOCSFBUF32		_IOW('v',12, struct video_buffer32)
#define VIDIOCGFREQ32		_IOR('v',14, u32)
#define VIDIOCSFREQ32		_IOW('v',15, u32)
#define VIDIOCSMICROCODE32	_IOW('v',27, struct video_code32)

#endif

/* VIDIOC_ENUMINPUT32 is VIDIOC_ENUMINPUT minus 4 bytes of padding alignement */
#define VIDIOC_ENUMINPUT32	VIDIOC_ENUMINPUT - _IOC(0, 0, 0, 4)
#define VIDIOC_G_FMT32		_IOWR ('V',  4, struct v4l2_format32)
#define VIDIOC_S_FMT32		_IOWR ('V',  5, struct v4l2_format32)
#define VIDIOC_QUERYBUF32	_IOWR ('V',  9, struct v4l2_buffer32)
#define VIDIOC_G_FBUF32		_IOR  ('V', 10, struct v4l2_framebuffer32)
#define VIDIOC_S_FBUF32		_IOW  ('V', 11, struct v4l2_framebuffer32)
/* VIDIOC_OVERLAY is now _IOW, but was _IOWR */
#define VIDIOC_OVERLAY32	_IOWR ('V', 14, compat_int_t)
#define VIDIOC_QBUF32		_IOWR ('V', 15, struct v4l2_buffer32)
#define VIDIOC_DQBUF32		_IOWR ('V', 17, struct v4l2_buffer32)
#define VIDIOC_STREAMON32	_IOW  ('V', 18, compat_int_t)
#define VIDIOC_STREAMOFF32	_IOW  ('V', 19, compat_int_t)
#define VIDIOC_ENUMSTD32	_IOWR ('V', 25, struct v4l2_standard32)
/* VIDIOC_S_CTRL is now _IOWR, but was _IOW */
#define VIDIOC_S_CTRL32		_IOW  ('V', 28, struct v4l2_control)
#define VIDIOC_G_INPUT32	_IOR  ('V', 38, compat_int_t)
#define VIDIOC_S_INPUT32	_IOWR ('V', 39, compat_int_t)
#define VIDIOC_TRY_FMT32      	_IOWR ('V', 64, struct v4l2_format32)

#ifdef CONFIG_VIDEO_V4L1_COMPAT
enum {
	MaxClips = (~0U-sizeof(struct video_window))/sizeof(struct video_clip)
};

static int do_set_window(struct file *file, unsigned int cmd, unsigned long arg)
{
	struct video_window32 __user *up = compat_ptr(arg);
	struct video_window __user *vw;
	struct video_clip __user *p;
	int nclips;
	u32 n;

	if (!access_ok(VERIFY_READ, up, sizeof(struct video_window32)))
		return -EFAULT;

	if (get_user(nclips, &up->clipcount))
		return -EFAULT;

	/* Peculiar interface... */
	if (nclips < 0)
		nclips = VIDEO_CLIPMAP_SIZE;

	if (nclips > MaxClips)
		return -ENOMEM;

	vw = compat_alloc_user_space(sizeof(struct video_window) +
				    nclips * sizeof(struct video_clip));

	p = nclips ? (struct video_clip __user *)(vw + 1) : NULL;

	if (get_user(n, &up->x) || put_user(n, &vw->x) ||
	    get_user(n, &up->y) || put_user(n, &vw->y) ||
	    get_user(n, &up->width) || put_user(n, &vw->width) ||
	    get_user(n, &up->height) || put_user(n, &vw->height) ||
	    get_user(n, &up->chromakey) || put_user(n, &vw->chromakey) ||
	    get_user(n, &up->flags) || put_user(n, &vw->flags) ||
	    get_user(n, &up->clipcount) || put_user(n, &vw->clipcount) ||
	    get_user(n, &up->clips) || put_user(p, &vw->clips))
		return -EFAULT;

	if (nclips) {
		struct video_clip32 __user *u = compat_ptr(n);
		int i;
		if (!u)
			return -EINVAL;
		for (i = 0; i < nclips; i++, u++, p++) {
			s32 v;
			if (!access_ok(VERIFY_READ, u, sizeof(struct video_clip32)) ||
			    !access_ok(VERIFY_WRITE, p, sizeof(struct video_clip32)) ||
			    get_user(v, &u->x) ||
			    put_user(v, &p->x) ||
			    get_user(v, &u->y) ||
			    put_user(v, &p->y) ||
			    get_user(v, &u->width) ||
			    put_user(v, &p->width) ||
			    get_user(v, &u->height) ||
			    put_user(v, &p->height) ||
			    put_user(NULL, &p->next))
				return -EFAULT;
		}
	}

	return native_ioctl(file, VIDIOCSWIN, (unsigned long)vw);
}
#endif

static int do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	union {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
		struct video_tuner vt;
		struct video_buffer vb;
		struct video_window vw;
		struct video_code vc;
		struct video_audio va;
#endif
		struct v4l2_format v2f;
		struct v4l2_buffer v2b;
		struct v4l2_framebuffer v2fb;
		struct v4l2_standard v2s;
		struct v4l2_input v2i;
		struct v4l2_tuner v2t;
		unsigned long vx;
	} karg;
	void __user *up = compat_ptr(arg);
	int compatible_arg = 1;
	int err = 0;
	int realcmd = cmd;

	/* First, convert the command. */
	switch(cmd) {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	case VIDIOCGTUNER32: realcmd = cmd = VIDIOCGTUNER; break;
	case VIDIOCSTUNER32: realcmd = cmd = VIDIOCSTUNER; break;
	case VIDIOCGWIN32: realcmd = cmd = VIDIOCGWIN; break;
	case VIDIOCGFBUF32: realcmd = cmd = VIDIOCGFBUF; break;
	case VIDIOCSFBUF32: realcmd = cmd = VIDIOCSFBUF; break;
	case VIDIOCGFREQ32: realcmd = cmd = VIDIOCGFREQ; break;
	case VIDIOCSFREQ32: realcmd = cmd = VIDIOCSFREQ; break;
	case VIDIOCSMICROCODE32: realcmd = cmd = VIDIOCSMICROCODE; break;
#endif
	case VIDIOC_G_FMT32: realcmd = cmd = VIDIOC_G_FMT; break;
	case VIDIOC_S_FMT32: realcmd = cmd = VIDIOC_S_FMT; break;
	case VIDIOC_QUERYBUF32: realcmd = cmd = VIDIOC_QUERYBUF; break;
	case VIDIOC_QBUF32: realcmd = cmd = VIDIOC_QBUF; break;
	case VIDIOC_DQBUF32: realcmd = cmd = VIDIOC_DQBUF; break;
	case VIDIOC_STREAMON32: realcmd = cmd = VIDIOC_STREAMON; break;
	case VIDIOC_STREAMOFF32: realcmd = cmd = VIDIOC_STREAMOFF; break;
	case VIDIOC_G_FBUF32: realcmd = cmd = VIDIOC_G_FBUF; break;
	case VIDIOC_S_FBUF32: realcmd = cmd = VIDIOC_S_FBUF; break;
	case VIDIOC_OVERLAY32: realcmd = cmd = VIDIOC_OVERLAY; break;
	case VIDIOC_ENUMSTD32: realcmd = VIDIOC_ENUMSTD; break;
	case VIDIOC_ENUMINPUT32: realcmd = VIDIOC_ENUMINPUT; break;
	case VIDIOC_S_CTRL32: realcmd = cmd = VIDIOC_S_CTRL; break;
	case VIDIOC_G_INPUT32: realcmd = cmd = VIDIOC_G_INPUT; break;
	case VIDIOC_S_INPUT32: realcmd = cmd = VIDIOC_S_INPUT; break;
	case VIDIOC_TRY_FMT32: realcmd = cmd = VIDIOC_TRY_FMT; break;
	};

	switch(cmd) {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	case VIDIOCSTUNER:
	case VIDIOCGTUNER:
		err = get_video_tuner32(&karg.vt, up);
		compatible_arg = 0;

		break;

	case VIDIOCSFBUF:
		err = get_video_buffer32(&karg.vb, up);
		compatible_arg = 0;
		break;


	case VIDIOCSFREQ:
#endif
	case VIDIOC_S_INPUT:
	case VIDIOC_OVERLAY:
	case VIDIOC_STREAMON:
	case VIDIOC_STREAMOFF:
		err = get_user(karg.vx, (u32 __user *)up);
		compatible_arg = 1;
		break;

	case VIDIOC_S_FBUF:
		err = get_v4l2_framebuffer32(&karg.v2fb, up);
		compatible_arg = 0;
		break;

	case VIDIOC_G_FMT:
	case VIDIOC_S_FMT:
	case VIDIOC_TRY_FMT:
		err = get_v4l2_format32(&karg.v2f, up);
		compatible_arg = 0;
		break;

	case VIDIOC_QUERYBUF:
	case VIDIOC_QBUF:
	case VIDIOC_DQBUF:
		err = get_v4l2_buffer32(&karg.v2b, up);
		compatible_arg = 0;
		break;

	case VIDIOC_ENUMSTD:
		err = get_v4l2_standard(&karg.v2s, up);
		compatible_arg = 0;
		break;

	case VIDIOC_ENUMSTD32:
		err = get_v4l2_standard32(&karg.v2s, up);
		compatible_arg = 0;
		break;

	case VIDIOC_ENUMINPUT:
		err = get_v4l2_input(&karg.v2i, up);
		compatible_arg = 0;
		break;

	case VIDIOC_ENUMINPUT32:
		err = get_v4l2_input32(&karg.v2i, up);
		compatible_arg = 0;
		break;

	case VIDIOC_G_TUNER:
	case VIDIOC_S_TUNER:
		err = get_v4l2_tuner(&karg.v2t, up);
		compatible_arg = 0;
		break;

#ifdef CONFIG_VIDEO_V4L1_COMPAT
	case VIDIOCGWIN:
	case VIDIOCGFBUF:
	case VIDIOCGFREQ:
#endif
	case VIDIOC_G_FBUF:
	case VIDIOC_G_INPUT:
		compatible_arg = 0;
		break;
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	case VIDIOCSMICROCODE:
		err = microcode32(&karg.vc, up);
		compatible_arg = 0;
		break;
#endif
	};
	if(err)
		goto out;

	if(compatible_arg)
		err = native_ioctl(file, realcmd, (unsigned long)up);
	else {
		mm_segment_t old_fs = get_fs();

		set_fs(KERNEL_DS);
		err = native_ioctl(file, realcmd, (unsigned long) &karg);
		set_fs(old_fs);
	}
	if(err == 0) {
		switch(cmd) {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
		case VIDIOCGTUNER:
			err = put_video_tuner32(&karg.vt, up);
			break;

		case VIDIOCGWIN:
			err = put_video_window32(&karg.vw, up);
			break;

		case VIDIOCGFBUF:
			err = put_video_buffer32(&karg.vb, up);
			break;

#endif
		case VIDIOC_G_FBUF:
			err = put_v4l2_framebuffer32(&karg.v2fb, up);
			break;

		case VIDIOC_G_FMT:
		case VIDIOC_S_FMT:
		case VIDIOC_TRY_FMT:
			err = put_v4l2_format32(&karg.v2f, up);
			break;

		case VIDIOC_QUERYBUF:
		case VIDIOC_QBUF:
		case VIDIOC_DQBUF:
			err = put_v4l2_buffer32(&karg.v2b, up);
			break;

		case VIDIOC_ENUMSTD:
			err = put_v4l2_standard(&karg.v2s, up);
			break;

		case VIDIOC_ENUMSTD32:
			err = put_v4l2_standard32(&karg.v2s, up);
			break;

		case VIDIOC_G_TUNER:
		case VIDIOC_S_TUNER:
			err = put_v4l2_tuner(&karg.v2t, up);
			break;

		case VIDIOC_ENUMINPUT:
			err = put_v4l2_input(&karg.v2i, up);
			break;

		case VIDIOC_ENUMINPUT32:
			err = put_v4l2_input32(&karg.v2i, up);
			break;

#ifdef CONFIG_VIDEO_V4L1_COMPAT
		case VIDIOCGFREQ:
#endif
		case VIDIOC_G_INPUT:
			err = put_user(((u32)karg.vx), (u32 __user *)up);
			break;
		};
	}
out:
	return err;
}

long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
{
	int ret = -ENOIOCTLCMD;

	if (!file->f_op->ioctl)
		return ret;

	switch (cmd) {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	case VIDIOCSWIN32:
		ret = do_set_window(file, cmd, arg);
		break;
	case VIDIOCGTUNER32:
	case VIDIOCSTUNER32:
	case VIDIOCGWIN32:
	case VIDIOCGFBUF32:
	case VIDIOCSFBUF32:
	case VIDIOCGFREQ32:
	case VIDIOCSFREQ32:
	case VIDIOCGAUDIO:
	case VIDIOCSAUDIO:
	case VIDIOCGVBIFMT:
	case VIDIOCSVBIFMT:
#endif
	case VIDIOC_QUERYCAP:
	case VIDIOC_ENUM_FMT:
	case VIDIOC_G_FMT32:
	case VIDIOC_CROPCAP:
	case VIDIOC_S_CROP:
	case VIDIOC_S_FMT32:
	case VIDIOC_REQBUFS:
	case VIDIOC_QUERYBUF32:
	case VIDIOC_G_FBUF32:
	case VIDIOC_S_FBUF32:
	case VIDIOC_OVERLAY32:
	case VIDIOC_QBUF32:
	case VIDIOC_DQBUF32:
	case VIDIOC_STREAMON32:
	case VIDIOC_STREAMOFF32:
	case VIDIOC_G_PARM:
	case VIDIOC_G_STD:
	case VIDIOC_S_STD:
	case VIDIOC_G_TUNER:
	case VIDIOC_S_TUNER:
	case VIDIOC_ENUMSTD:
	case VIDIOC_ENUMSTD32:
	case VIDIOC_ENUMINPUT:
	case VIDIOC_ENUMINPUT32:
	case VIDIOC_G_CTRL:
	case VIDIOC_S_CTRL:
	case VIDIOC_S_CTRL32:
	case VIDIOC_S_FREQUENCY:
	case VIDIOC_G_FREQUENCY:
	case VIDIOC_QUERYCTRL:
	case VIDIOC_G_INPUT32:
	case VIDIOC_S_INPUT32:
	case VIDIOC_TRY_FMT32:
	case VIDIOC_S_HW_FREQ_SEEK:
		ret = do_video_ioctl(file, cmd, arg);
		break;

#ifdef CONFIG_VIDEO_V4L1_COMPAT
	/* Little v, the video4linux ioctls (conflict?) */
	case VIDIOCGCAP:
	case VIDIOCGCHAN:
	case VIDIOCSCHAN:
	case VIDIOCGPICT:
	case VIDIOCSPICT:
	case VIDIOCCAPTURE:
	case VIDIOCKEY:
	case VIDIOCSYNC:
	case VIDIOCMCAPTURE:
	case VIDIOCGMBUF:
	case VIDIOCGUNIT:
	case VIDIOCGCAPTURE:
	case VIDIOCSCAPTURE:

	/* BTTV specific... */
	case _IOW('v',  BASE_VIDIOCPRIVATE+0, char [256]):
	case _IOR('v',  BASE_VIDIOCPRIVATE+1, char [256]):
	case _IOR('v' , BASE_VIDIOCPRIVATE+2, unsigned int):
	case _IOW('v' , BASE_VIDIOCPRIVATE+3, char [16]): /* struct bttv_pll_info */
	case _IOR('v' , BASE_VIDIOCPRIVATE+4, int):
	case _IOR('v' , BASE_VIDIOCPRIVATE+5, int):
	case _IOR('v' , BASE_VIDIOCPRIVATE+6, int):
	case _IOR('v' , BASE_VIDIOCPRIVATE+7, int):
		ret = native_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
		break;
#endif
	default:
		v4l_print_ioctl("compat_ioctl32", cmd);
	}
	return ret;
}
#else
long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
{
	return -ENOIOCTLCMD;
}
#endif
EXPORT_SYMBOL_GPL(v4l_compat_ioctl32);

MODULE_LICENSE("GPL");