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[media] Two small string fixes in v4l2-ctrls.c
[deliverable/linux.git] / drivers / media / video / v4l2-compat-ioctl32.c
CommitLineData
cf664a64
PDM		 1/*
2 * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
3 * Separated from fs stuff by Arnd Bergmann <arnd@arndb.de>
4 *
5 * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com)
6 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
7 * Copyright (C) 2001,2002 Andi Kleen, SuSE Labs
a2531293 8 * Copyright (C) 2003 Pavel Machek (pavel@ucw.cz)
cf664a64 9 * Copyright (C) 2005 Philippe De Muyter (phdm@macqel.be)
92f45bad 10 * Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
cf664a64
PDM		 11 *
12 * These routines maintain argument size conversion between 32bit and 64bit
13 * ioctls.
14 */
15
0d0fbf81 16#include <linux/compat.h>
cf664a64 17#include <linux/videodev2.h>
133b7354 18#include <linux/module.h>
2864462e 19#include <media/v4l2-ioctl.h>
0d0fbf81
AB		 20
21#ifdef CONFIG_COMPAT
a113bc78 22
069b7479 23static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
92f45bad 24{
069b7479 25 long ret = -ENOIOCTLCMD;
92f45bad
HV		 26
27 if (file->f_op->unlocked_ioctl)
28 ret = file->f_op->unlocked_ioctl(file, cmd, arg);
92f45bad
HV		 29
30 return ret;
31}
32
33
d1f81da2 34struct v4l2_clip32 {
cf664a64
PDM		 35 struct v4l2_rect c;
36 compat_caddr_t next;
37};
38
d1f81da2 39struct v4l2_window32 {
cf664a64
PDM		 40 struct v4l2_rect w;
41 enum v4l2_field field;
42 __u32 chromakey;
43 compat_caddr_t clips; /* actually struct v4l2_clip32 * */
44 __u32 clipcount;
45 compat_caddr_t bitmap;
46};
47
48static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
49{
a113bc78
GM		 50 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
51 copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
52 get_user(kp->field, &up->field) ||
53 get_user(kp->chromakey, &up->chromakey) ||
54 get_user(kp->clipcount, &up->clipcount))
55 return -EFAULT;
cf664a64
PDM		 56 if (kp->clipcount > 2048)
57 return -EINVAL;
58 if (kp->clipcount) {
5b1a43d7
AV		 59 struct v4l2_clip32 __user *uclips;
60 struct v4l2_clip __user *kclips;
cf664a64 61 int n = kp->clipcount;
5b1a43d7 62 compat_caddr_t p;
cf664a64 63
5b1a43d7
AV		 64 if (get_user(p, &up->clips))
65 return -EFAULT;
66 uclips = compat_ptr(p);
cf664a64
PDM		 67 kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
68 kp->clips = kclips;
69 while (--n >= 0) {
5b1a43d7
AV		 70 if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
71 return -EFAULT;
72 if (put_user(n ? kclips + 1 : NULL, &kclips->next))
a113bc78 73 return -EFAULT;
cf664a64
PDM		 74 uclips += 1;
75 kclips += 1;
76 }
77 } else
5b1a43d7 78 kp->clips = NULL;
cf664a64
PDM		 79 return 0;
80}
81
82static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
83{
f2e6c6ad 84 if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) ||
a113bc78
GM		 85 put_user(kp->field, &up->field) ||
86 put_user(kp->chromakey, &up->chromakey) ||
87 put_user(kp->clipcount, &up->clipcount))
88 return -EFAULT;
cf664a64
PDM		 89 return 0;
90}
91
92static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
93{
5b1a43d7
AV		 94 if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
95 return -EFAULT;
a113bc78 96 return 0;
cf664a64
PDM		 97}
98
52a3082f
PO		 99static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
100 struct v4l2_pix_format_mplane __user *up)
101{
102 if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane)))
103 return -EFAULT;
104 return 0;
105}
106
cf664a64
PDM		 107static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
108{
5b1a43d7
AV		 109 if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
110 return -EFAULT;
a113bc78 111 return 0;
cf664a64
PDM		 112}
113
52a3082f
PO		 114static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
115 struct v4l2_pix_format_mplane __user *up)
116{
117 if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane)))
118 return -EFAULT;
119 return 0;
120}
121
cf664a64
PDM		 122static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
123{
5b1a43d7
AV		 124 if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
125 return -EFAULT;
a113bc78 126 return 0;
cf664a64
PDM		 127}
128
129static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
130{
5b1a43d7
AV		 131 if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
132 return -EFAULT;
a113bc78 133 return 0;
cf664a64
PDM		 134}
135
92f45bad
HV		 136static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
137{
138 if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
139 return -EFAULT;
140 return 0;
141}
142
143static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
144{
145 if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
146 return -EFAULT;
147 return 0;
148}
149
d1f81da2 150struct v4l2_format32 {
cf664a64 151 enum v4l2_buf_type type;
d1f81da2 152 union {
92f45bad 153 struct v4l2_pix_format pix;
52a3082f 154 struct v4l2_pix_format_mplane pix_mp;
92f45bad
HV		 155 struct v4l2_window32 win;
156 struct v4l2_vbi_format vbi;
157 struct v4l2_sliced_vbi_format sliced;
d1f81da2 158 __u8 raw_data[200]; /* user-defined */
cf664a64
PDM		 159 } fmt;
160};
161
09362ec2
GL		 162/**
163 * struct v4l2_create_buffers32 - VIDIOC_CREATE_BUFS32 argument
164 * @index: on return, index of the first created buffer
165 * @count: entry: number of requested buffers,
166 * return: number of created buffers
167 * @memory: buffer memory type
168 * @format: frame format, for which buffers are requested
169 * @reserved: future extensions
170 */
2150158b 171struct v4l2_create_buffers32 {
09362ec2 172 __u32 index;
2150158b
GL		 173 __u32 count;
174 enum v4l2_memory memory;
09362ec2 175 struct v4l2_format32 format;
2150158b
GL		 176 __u32 reserved[8];
177};
178
179static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
cf664a64 180{
cf664a64
PDM		 181 switch (kp->type) {
182 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
92f45bad 183 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
cf664a64 184 return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
52a3082f
PO		 185 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
186 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
187 return get_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
188 &up->fmt.pix_mp);
cf664a64 189 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
92f45bad 190 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
cf664a64
PDM		 191 return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
192 case V4L2_BUF_TYPE_VBI_CAPTURE:
92f45bad 193 case V4L2_BUF_TYPE_VBI_OUTPUT:
cf664a64 194 return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
92f45bad
HV		 195 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
196 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
197 return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
198 case V4L2_BUF_TYPE_PRIVATE:
199 if (copy_from_user(kp, up, sizeof(kp->fmt.raw_data)))
200 return -EFAULT;
201 return 0;
cf664a64 202 default:
92f45bad 203 printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
cf664a64 204 kp->type);
92f45bad 205 return -EINVAL;
cf664a64
PDM		 206 }
207}
208
2150158b
GL		 209static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
210{
211 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) ||
212 get_user(kp->type, &up->type))
213 return -EFAULT;
214 return __get_v4l2_format32(kp, up);
215}
216
217static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
218{
219 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_create_buffers32)) ||
220 copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format.fmt)))
221 return -EFAULT;
222 return __get_v4l2_format32(&kp->format, &up->format);
223}
224
225static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
cf664a64 226{
cf664a64
PDM		 227 switch (kp->type) {
228 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
92f45bad 229 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
cf664a64 230 return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
52a3082f
PO		 231 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
232 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
233 return put_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
234 &up->fmt.pix_mp);
cf664a64 235 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
92f45bad 236 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
cf664a64
PDM		 237 return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
238 case V4L2_BUF_TYPE_VBI_CAPTURE:
92f45bad 239 case V4L2_BUF_TYPE_VBI_OUTPUT:
cf664a64 240 return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
92f45bad
HV		 241 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
242 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
243 return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
244 case V4L2_BUF_TYPE_PRIVATE:
245 if (copy_to_user(up, kp, sizeof(up->fmt.raw_data)))
246 return -EFAULT;
247 return 0;
cf664a64 248 default:
92f45bad
HV		 249 printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
250 kp->type);
251 return -EINVAL;
cf664a64
PDM		 252 }
253}
254
2150158b
GL		 255static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
256{
257 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) ||
258 put_user(kp->type, &up->type))
259 return -EFAULT;
260 return __put_v4l2_format32(kp, up);
261}
262
263static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
264{
265 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) ||
266 copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format.fmt)))
267 return -EFAULT;
268 return __put_v4l2_format32(&kp->format, &up->format);
269}
270
d1f81da2 271struct v4l2_standard32 {
cf664a64
PDM		 272 __u32 index;
273 __u32 id[2]; /* __u64 would get the alignment wrong */
274 __u8 name[24];
275 struct v4l2_fract frameperiod; /* Frames, not fields */
276 __u32 framelines;
277 __u32 reserved[4];
278};
279
280static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
281{
282 /* other fields are not set by the user, nor used by the driver */
a113bc78
GM		 283 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
284 get_user(kp->index, &up->index))
285 return -EFAULT;
286 return 0;
cf664a64
PDM		 287}
288
289static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
290{
d1f81da2 291 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
a113bc78
GM		 292 put_user(kp->index, &up->index) ||
293 copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
294 copy_to_user(up->name, kp->name, 24) ||
295 copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
296 put_user(kp->framelines, &up->framelines) ||
297 copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
298 return -EFAULT;
299 return 0;
300}
301
52a3082f
PO		 302struct v4l2_plane32 {
303 __u32 bytesused;
304 __u32 length;
305 union {
306 __u32 mem_offset;
307 compat_long_t userptr;
308 } m;
309 __u32 data_offset;
310 __u32 reserved[11];
311};
312
d1f81da2 313struct v4l2_buffer32 {
cf664a64
PDM		 314 __u32 index;
315 enum v4l2_buf_type type;
316 __u32 bytesused;
317 __u32 flags;
318 enum v4l2_field field;
319 struct compat_timeval timestamp;
320 struct v4l2_timecode timecode;
321 __u32 sequence;
322
323 /* memory location */
324 enum v4l2_memory memory;
325 union {
326 __u32 offset;
327 compat_long_t userptr;
52a3082f 328 compat_caddr_t planes;
cf664a64
PDM		 329 } m;
330 __u32 length;
331 __u32 input;
332 __u32 reserved;
333};
334
52a3082f
PO		 335static int get_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
336 enum v4l2_memory memory)
337{
338 void __user *up_pln;
339 compat_long_t p;
340
341 if (copy_in_user(up, up32, 2 * sizeof(__u32)) ||
342 copy_in_user(&up->data_offset, &up32->data_offset,
343 sizeof(__u32)))
344 return -EFAULT;
345
346 if (memory == V4L2_MEMORY_USERPTR) {
347 if (get_user(p, &up32->m.userptr))
348 return -EFAULT;
349 up_pln = compat_ptr(p);
350 if (put_user((unsigned long)up_pln, &up->m.userptr))
351 return -EFAULT;
352 } else {
353 if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset,
354 sizeof(__u32)))
355 return -EFAULT;
356 }
357
358 return 0;
359}
360
361static int put_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
362 enum v4l2_memory memory)
363{
364 if (copy_in_user(up32, up, 2 * sizeof(__u32)) ||
365 copy_in_user(&up32->data_offset, &up->data_offset,
366 sizeof(__u32)))
367 return -EFAULT;
368
369 /* For MMAP, driver might've set up the offset, so copy it back.
370 * USERPTR stays the same (was userspace-provided), so no copying. */
371 if (memory == V4L2_MEMORY_MMAP)
372 if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset,
373 sizeof(__u32)))
374 return -EFAULT;
375
376 return 0;
377}
378
cf664a64
PDM		 379static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
380{
52a3082f
PO		 381 struct v4l2_plane32 __user *uplane32;
382 struct v4l2_plane __user *uplane;
383 compat_caddr_t p;
384 int num_planes;
385 int ret;
cf664a64 386
a113bc78
GM		 387 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
388 get_user(kp->index, &up->index) ||
389 get_user(kp->type, &up->type) ||
390 get_user(kp->flags, &up->flags) ||
391 get_user(kp->memory, &up->memory) ||
392 get_user(kp->input, &up->input))
393 return -EFAULT;
52a3082f
PO		 394
395 if (V4L2_TYPE_IS_OUTPUT(kp->type))
396 if (get_user(kp->bytesused, &up->bytesused) ||
397 get_user(kp->field, &up->field) ||
398 get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
399 get_user(kp->timestamp.tv_usec,
400 &up->timestamp.tv_usec))
22c859fa 401 return -EFAULT;
cf664a64 402
52a3082f
PO		 403 if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
404 if (get_user(kp->length, &up->length))
5b1a43d7
AV		 405 return -EFAULT;
406
52a3082f
PO		 407 num_planes = kp->length;
408 if (num_planes == 0) {
409 kp->m.planes = NULL;
410 /* num_planes == 0 is legal, e.g. when userspace doesn't
411 * need planes array on DQBUF*/
412 return 0;
cf664a64 413 }
52a3082f
PO		 414
415 if (get_user(p, &up->m.planes))
a113bc78 416 return -EFAULT;
52a3082f
PO		 417
418 uplane32 = compat_ptr(p);
419 if (!access_ok(VERIFY_READ, uplane32,
420 num_planes * sizeof(struct v4l2_plane32)))
421 return -EFAULT;
422
423 /* We don't really care if userspace decides to kill itself
424 * by passing a very big num_planes value */
425 uplane = compat_alloc_user_space(num_planes *
426 sizeof(struct v4l2_plane));
427 kp->m.planes = uplane;
428
429 while (--num_planes >= 0) {
430 ret = get_v4l2_plane32(uplane, uplane32, kp->memory);
431 if (ret)
432 return ret;
433 ++uplane;
434 ++uplane32;
435 }
436 } else {
437 switch (kp->memory) {
438 case V4L2_MEMORY_MMAP:
439 if (get_user(kp->length, &up->length) ||
440 get_user(kp->m.offset, &up->m.offset))
441 return -EFAULT;
442 break;
443 case V4L2_MEMORY_USERPTR:
444 {
445 compat_long_t tmp;
446
447 if (get_user(kp->length, &up->length) ||
448 get_user(tmp, &up->m.userptr))
449 return -EFAULT;
450
451 kp->m.userptr = (unsigned long)compat_ptr(tmp);
452 }
453 break;
454 case V4L2_MEMORY_OVERLAY:
455 if (get_user(kp->m.offset, &up->m.offset))
456 return -EFAULT;
457 break;
458 }
cf664a64 459 }
52a3082f 460
cf664a64
PDM		 461 return 0;
462}
463
464static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
465{
52a3082f
PO		 466 struct v4l2_plane32 __user *uplane32;
467 struct v4l2_plane __user *uplane;
468 compat_caddr_t p;
469 int num_planes;
470 int ret;
471
a113bc78
GM		 472 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
473 put_user(kp->index, &up->index) ||
474 put_user(kp->type, &up->type) ||
475 put_user(kp->flags, &up->flags) ||
476 put_user(kp->memory, &up->memory) ||
477 put_user(kp->input, &up->input))
478 return -EFAULT;
52a3082f 479
a113bc78
GM		 480 if (put_user(kp->bytesused, &up->bytesused) ||
481 put_user(kp->field, &up->field) ||
482 put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
483 put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
484 copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
485 put_user(kp->sequence, &up->sequence) ||
486 put_user(kp->reserved, &up->reserved))
487 return -EFAULT;
52a3082f
PO		 488
489 if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
490 num_planes = kp->length;
491 if (num_planes == 0)
492 return 0;
493
494 uplane = kp->m.planes;
495 if (get_user(p, &up->m.planes))
496 return -EFAULT;
497 uplane32 = compat_ptr(p);
498
499 while (--num_planes >= 0) {
500 ret = put_v4l2_plane32(uplane, uplane32, kp->memory);
501 if (ret)
502 return ret;
503 ++uplane;
504 ++uplane32;
505 }
506 } else {
507 switch (kp->memory) {
508 case V4L2_MEMORY_MMAP:
509 if (put_user(kp->length, &up->length) ||
510 put_user(kp->m.offset, &up->m.offset))
511 return -EFAULT;
512 break;
513 case V4L2_MEMORY_USERPTR:
514 if (put_user(kp->length, &up->length) ||
515 put_user(kp->m.userptr, &up->m.userptr))
516 return -EFAULT;
517 break;
518 case V4L2_MEMORY_OVERLAY:
519 if (put_user(kp->m.offset, &up->m.offset))
520 return -EFAULT;
521 break;
522 }
523 }
524
cf664a64
PDM		 525 return 0;
526}
527
d1f81da2 528struct v4l2_framebuffer32 {
cf664a64
PDM		 529 __u32 capability;
530 __u32 flags;
531 compat_caddr_t base;
532 struct v4l2_pix_format fmt;
533};
534
13d133bc
PDM		 535static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
536{
537 u32 tmp;
538
a113bc78
GM		 539 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
540 get_user(tmp, &up->base) ||
541 get_user(kp->capability, &up->capability) ||
542 get_user(kp->flags, &up->flags))
543 return -EFAULT;
13d133bc 544 kp->base = compat_ptr(tmp);
13d133bc
PDM		 545 get_v4l2_pix_format(&kp->fmt, &up->fmt);
546 return 0;
547}
548
cf664a64
PDM		 549static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
550{
551 u32 tmp = (u32)((unsigned long)kp->base);
552
d1f81da2 553 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
a113bc78
GM		 554 put_user(tmp, &up->base) ||
555 put_user(kp->capability, &up->capability) ||
556 put_user(kp->flags, &up->flags))
557 return -EFAULT;
cf664a64
PDM		 558 put_v4l2_pix_format(&kp->fmt, &up->fmt);
559 return 0;
560}
561
92f45bad
HV		 562struct v4l2_input32 {
563 __u32 index; /* Which input */
564 __u8 name[32]; /* Label */
565 __u32 type; /* Type of input */
566 __u32 audioset; /* Associated audios (bitfield) */
567 __u32 tuner; /* Associated tuner */
568 v4l2_std_id std;
569 __u32 status;
570 __u32 reserved[4];
571} __attribute__ ((packed));
572
573/* The 64-bit v4l2_input struct has extra padding at the end of the struct.
574 Otherwise it is identical to the 32-bit version. */
575static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
a113bc78 576{
92f45bad 577 if (copy_from_user(kp, up, sizeof(struct v4l2_input32)))
5b1a43d7 578 return -EFAULT;
a113bc78
GM		 579 return 0;
580}
581
92f45bad 582static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
a113bc78 583{
92f45bad 584 if (copy_to_user(up, kp, sizeof(struct v4l2_input32)))
5b1a43d7 585 return -EFAULT;
a113bc78
GM		 586 return 0;
587}
588
92f45bad
HV		 589struct v4l2_ext_controls32 {
590 __u32 ctrl_class;
591 __u32 count;
592 __u32 error_idx;
593 __u32 reserved[2];
594 compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
eb4eeccc
MCC		 595};
596
6b5a9492
HV		 597struct v4l2_ext_control32 {
598 __u32 id;
599 __u32 size;
600 __u32 reserved2[1];
601 union {
602 __s32 value;
603 __s64 value64;
604 compat_caddr_t string; /* actually char * */
605 };
606} __attribute__ ((packed));
607
608/* The following function really belong in v4l2-common, but that causes
609 a circular dependency between modules. We need to think about this, but
610 for now this will do. */
611
612/* Return non-zero if this control is a pointer type. Currently only
fdf82dc2 613 type STRING is a pointer type. */
6b5a9492
HV		 614static inline int ctrl_is_pointer(u32 id)
615{
fdf82dc2
EV		 616 switch (id) {
617 case V4L2_CID_RDS_TX_PS_NAME:
618 case V4L2_CID_RDS_TX_RADIO_TEXT:
619 return 1;
620 default:
621 return 0;
622 }
6b5a9492
HV		 623}
624
92f45bad 625static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
eb4eeccc 626{
6b5a9492 627 struct v4l2_ext_control32 __user *ucontrols;
92f45bad
HV		 628 struct v4l2_ext_control __user *kcontrols;
629 int n;
630 compat_caddr_t p;
631
632 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
633 get_user(kp->ctrl_class, &up->ctrl_class) ||
634 get_user(kp->count, &up->count) ||
635 get_user(kp->error_idx, &up->error_idx) ||
636 copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
637 return -EFAULT;
638 n = kp->count;
639 if (n == 0) {
640 kp->controls = NULL;
641 return 0;
642 }
643 if (get_user(p, &up->controls))
644 return -EFAULT;
645 ucontrols = compat_ptr(p);
52a3082f
PO		 646 if (!access_ok(VERIFY_READ, ucontrols,
647 n * sizeof(struct v4l2_ext_control32)))
92f45bad
HV		 648 return -EFAULT;
649 kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
650 kp->controls = kcontrols;
651 while (--n >= 0) {
52a3082f 652 if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols)))
92f45bad 653 return -EFAULT;
6b5a9492
HV		 654 if (ctrl_is_pointer(kcontrols->id)) {
655 void __user *s;
656
657 if (get_user(p, &ucontrols->string))
658 return -EFAULT;
659 s = compat_ptr(p);
660 if (put_user(s, &kcontrols->string))
661 return -EFAULT;
662 }
92f45bad
HV		 663 ucontrols++;
664 kcontrols++;
665 }
eb4eeccc
MCC		 666 return 0;
667}
668
92f45bad 669static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
0d0fbf81 670{
6b5a9492 671 struct v4l2_ext_control32 __user *ucontrols;
92f45bad
HV		 672 struct v4l2_ext_control __user *kcontrols = kp->controls;
673 int n = kp->count;
674 compat_caddr_t p;
675
676 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
677 put_user(kp->ctrl_class, &up->ctrl_class) ||
678 put_user(kp->count, &up->count) ||
679 put_user(kp->error_idx, &up->error_idx) ||
680 copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
681 return -EFAULT;
682 if (!kp->count)
683 return 0;
a113bc78 684
92f45bad 685 if (get_user(p, &up->controls))
0d0fbf81 686 return -EFAULT;
92f45bad 687 ucontrols = compat_ptr(p);
52a3082f
PO		 688 if (!access_ok(VERIFY_WRITE, ucontrols,
689 n * sizeof(struct v4l2_ext_control32)))
0d0fbf81
AB		 690 return -EFAULT;
691
92f45bad 692 while (--n >= 0) {
6b5a9492
HV		 693 unsigned size = sizeof(*ucontrols);
694
695 /* Do not modify the pointer when copying a pointer control.
696 The contents of the pointer was changed, not the pointer
697 itself. */
698 if (ctrl_is_pointer(kcontrols->id))
699 size -= sizeof(ucontrols->value64);
700 if (copy_in_user(ucontrols, kcontrols, size))
92f45bad
HV		 701 return -EFAULT;
702 ucontrols++;
703 kcontrols++;
0d0fbf81 704 }
92f45bad 705 return 0;
0d0fbf81 706}
92f45bad 707
2330fb82
HV		 708struct v4l2_event32 {
709 __u32 type;
710 union {
711 __u8 data[64];
712 } u;
713 __u32 pending;
714 __u32 sequence;
715 struct compat_timespec timestamp;
716 __u32 id;
717 __u32 reserved[8];
718};
719
720static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up)
721{
722 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_event32)) ||
723 put_user(kp->type, &up->type) ||
724 copy_to_user(&up->u, &kp->u, sizeof(kp->u)) ||
725 put_user(kp->pending, &up->pending) ||
726 put_user(kp->sequence, &up->sequence) ||
727 put_compat_timespec(&kp->timestamp, &up->timestamp) ||
728 put_user(kp->id, &up->id) ||
729 copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32)))
730 return -EFAULT;
731 return 0;
732}
733
92f45bad
HV		 734#define VIDIOC_G_FMT32 _IOWR('V', 4, struct v4l2_format32)
735#define VIDIOC_S_FMT32 _IOWR('V', 5, struct v4l2_format32)
736#define VIDIOC_QUERYBUF32 _IOWR('V', 9, struct v4l2_buffer32)
737#define VIDIOC_G_FBUF32 _IOR ('V', 10, struct v4l2_framebuffer32)
738#define VIDIOC_S_FBUF32 _IOW ('V', 11, struct v4l2_framebuffer32)
739#define VIDIOC_QBUF32 _IOWR('V', 15, struct v4l2_buffer32)
740#define VIDIOC_DQBUF32 _IOWR('V', 17, struct v4l2_buffer32)
741#define VIDIOC_ENUMSTD32 _IOWR('V', 25, struct v4l2_standard32)
742#define VIDIOC_ENUMINPUT32 _IOWR('V', 26, struct v4l2_input32)
743#define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32)
744#define VIDIOC_G_EXT_CTRLS32 _IOWR('V', 71, struct v4l2_ext_controls32)
745#define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32)
746#define VIDIOC_TRY_EXT_CTRLS32 _IOWR('V', 73, struct v4l2_ext_controls32)
2330fb82 747#define VIDIOC_DQEVENT32 _IOR ('V', 89, struct v4l2_event32)
2150158b
GL		 748#define VIDIOC_CREATE_BUFS32 _IOWR('V', 92, struct v4l2_create_buffers32)
749#define VIDIOC_PREPARE_BUF32 _IOWR('V', 93, struct v4l2_buffer32)
92f45bad
HV		 750
751#define VIDIOC_OVERLAY32 _IOW ('V', 14, s32)
92f45bad
HV		 752#define VIDIOC_STREAMON32 _IOW ('V', 18, s32)
753#define VIDIOC_STREAMOFF32 _IOW ('V', 19, s32)
754#define VIDIOC_G_INPUT32 _IOR ('V', 38, s32)
755#define VIDIOC_S_INPUT32 _IOWR('V', 39, s32)
756#define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32)
757#define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32)
0d0fbf81 758
069b7479 759static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
0d0fbf81
AB		 760{
761 union {
cf664a64
PDM		 762 struct v4l2_format v2f;
763 struct v4l2_buffer v2b;
764 struct v4l2_framebuffer v2fb;
a113bc78 765 struct v4l2_input v2i;
92f45bad
HV		 766 struct v4l2_standard v2s;
767 struct v4l2_ext_controls v2ecs;
2330fb82 768 struct v4l2_event v2ev;
2150158b 769 struct v4l2_create_buffers v2crt;
0d0fbf81 770 unsigned long vx;
92f45bad 771 int vi;
0d0fbf81 772 } karg;
0d0fbf81 773 void __user *up = compat_ptr(arg);
cf664a64 774 int compatible_arg = 1;
069b7479 775 long err = 0;
0d0fbf81
AB		 776
777 /* First, convert the command. */
d1f81da2 778 switch (cmd) {
92f45bad
HV		 779 case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;
780 case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break;
781 case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break;
782 case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break;
783 case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break;
784 case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break;
785 case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break;
786 case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break;
787 case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break;
788 case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break;
789 case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break;
790 case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break;
791 case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break;
2330fb82 792 case VIDIOC_DQEVENT32: cmd = VIDIOC_DQEVENT; break;
92f45bad 793 case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break;
92f45bad
HV		 794 case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break;
795 case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break;
796 case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break;
797 case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
798 case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
799 case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
2150158b
GL		 800 case VIDIOC_CREATE_BUFS32: cmd = VIDIOC_CREATE_BUFS; break;
801 case VIDIOC_PREPARE_BUF32: cmd = VIDIOC_PREPARE_BUF; break;
92f45bad 802 }
0d0fbf81 803
d1f81da2 804 switch (cmd) {
cf664a64 805 case VIDIOC_OVERLAY:
13d133bc
PDM		 806 case VIDIOC_STREAMON:
807 case VIDIOC_STREAMOFF:
92f45bad
HV		 808 case VIDIOC_S_INPUT:
809 case VIDIOC_S_OUTPUT:
810 err = get_user(karg.vi, (s32 __user *)up);
811 compatible_arg = 0;
0d0fbf81 812 break;
13d133bc 813
92f45bad
HV		 814 case VIDIOC_G_INPUT:
815 case VIDIOC_G_OUTPUT:
13d133bc
PDM		 816 compatible_arg = 0;
817 break;
cf664a64
PDM		 818
819 case VIDIOC_G_FMT:
820 case VIDIOC_S_FMT:
821 case VIDIOC_TRY_FMT:
822 err = get_v4l2_format32(&karg.v2f, up);
823 compatible_arg = 0;
824 break;
825
2150158b
GL		 826 case VIDIOC_CREATE_BUFS:
827 err = get_v4l2_create32(&karg.v2crt, up);
828 compatible_arg = 0;
829 break;
830
831 case VIDIOC_PREPARE_BUF:
cf664a64
PDM		 832 case VIDIOC_QUERYBUF:
833 case VIDIOC_QBUF:
834 case VIDIOC_DQBUF:
835 err = get_v4l2_buffer32(&karg.v2b, up);
836 compatible_arg = 0;
837 break;
838
92f45bad
HV		 839 case VIDIOC_S_FBUF:
840 err = get_v4l2_framebuffer32(&karg.v2fb, up);
a113bc78
GM		 841 compatible_arg = 0;
842 break;
843
92f45bad 844 case VIDIOC_G_FBUF:
cf664a64
PDM		 845 compatible_arg = 0;
846 break;
847
92f45bad
HV		 848 case VIDIOC_ENUMSTD:
849 err = get_v4l2_standard32(&karg.v2s, up);
a113bc78
GM		 850 compatible_arg = 0;
851 break;
852
92f45bad 853 case VIDIOC_ENUMINPUT:
a113bc78
GM		 854 err = get_v4l2_input32(&karg.v2i, up);
855 compatible_arg = 0;
856 break;
857
92f45bad
HV		 858 case VIDIOC_G_EXT_CTRLS:
859 case VIDIOC_S_EXT_CTRLS:
860 case VIDIOC_TRY_EXT_CTRLS:
861 err = get_v4l2_ext_controls32(&karg.v2ecs, up);
a113bc78
GM		 862 compatible_arg = 0;
863 break;
2330fb82
HV		 864 case VIDIOC_DQEVENT:
865 compatible_arg = 0;
866 break;
92f45bad 867 }
d1f81da2 868 if (err)
92f45bad 869 return err;
0d0fbf81 870
d1f81da2 871 if (compatible_arg)
92f45bad 872 err = native_ioctl(file, cmd, (unsigned long)up);
cf664a64
PDM		 873 else {
874 mm_segment_t old_fs = get_fs();
0d0fbf81 875
cf664a64 876 set_fs(KERNEL_DS);
92f45bad 877 err = native_ioctl(file, cmd, (unsigned long)&karg);
cf664a64
PDM		 878 set_fs(old_fs);
879 }
92f45bad
HV		 880
881 /* Special case: even after an error we need to put the
882 results back for these ioctls since the error_idx will
883 contain information on which control failed. */
884 switch (cmd) {
885 case VIDIOC_G_EXT_CTRLS:
886 case VIDIOC_S_EXT_CTRLS:
887 case VIDIOC_TRY_EXT_CTRLS:
888 if (put_v4l2_ext_controls32(&karg.v2ecs, up))
889 err = -EFAULT;
890 break;
891 }
892 if (err)
893 return err;
894
895 switch (cmd) {
92f45bad
HV		 896 case VIDIOC_S_INPUT:
897 case VIDIOC_S_OUTPUT:
898 case VIDIOC_G_INPUT:
899 case VIDIOC_G_OUTPUT:
900 err = put_user(((s32)karg.vi), (s32 __user *)up);
901 break;
a113bc78 902
92f45bad
HV		 903 case VIDIOC_G_FBUF:
904 err = put_v4l2_framebuffer32(&karg.v2fb, up);
905 break;
906
2330fb82
HV		 907 case VIDIOC_DQEVENT:
908 err = put_v4l2_event32(&karg.v2ev, up);
909 break;
910
92f45bad
HV		 911 case VIDIOC_G_FMT:
912 case VIDIOC_S_FMT:
913 case VIDIOC_TRY_FMT:
914 err = put_v4l2_format32(&karg.v2f, up);
915 break;
916
2150158b
GL		 917 case VIDIOC_CREATE_BUFS:
918 err = put_v4l2_create32(&karg.v2crt, up);
919 break;
920
92f45bad
HV		 921 case VIDIOC_QUERYBUF:
922 case VIDIOC_QBUF:
923 case VIDIOC_DQBUF:
924 err = put_v4l2_buffer32(&karg.v2b, up);
925 break;
926
927 case VIDIOC_ENUMSTD:
928 err = put_v4l2_standard32(&karg.v2s, up);
929 break;
930
931 case VIDIOC_ENUMINPUT:
932 err = put_v4l2_input32(&karg.v2i, up);
933 break;
0d0fbf81 934 }
0d0fbf81
AB		 935 return err;
936}
937
9bb7cde7 938long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
0d0fbf81 939{
069b7479 940 long ret = -ENOIOCTLCMD;
0d0fbf81 941
c6d7ba8b 942 if (!file->f_op->unlocked_ioctl)
0d0fbf81
AB		 943 return ret;
944
945 switch (cmd) {
13d133bc 946 case VIDIOC_QUERYCAP:
92f45bad 947 case VIDIOC_RESERVED:
13d133bc
PDM		 948 case VIDIOC_ENUM_FMT:
949 case VIDIOC_G_FMT32:
950 case VIDIOC_S_FMT32:
951 case VIDIOC_REQBUFS:
952 case VIDIOC_QUERYBUF32:
953 case VIDIOC_G_FBUF32:
954 case VIDIOC_S_FBUF32:
955 case VIDIOC_OVERLAY32:
956 case VIDIOC_QBUF32:
957 case VIDIOC_DQBUF32:
958 case VIDIOC_STREAMON32:
959 case VIDIOC_STREAMOFF32:
960 case VIDIOC_G_PARM:
c7f09db6 961 case VIDIOC_S_PARM:
13d133bc
PDM		 962 case VIDIOC_G_STD:
963 case VIDIOC_S_STD:
964 case VIDIOC_ENUMSTD32:
965 case VIDIOC_ENUMINPUT32:
966 case VIDIOC_G_CTRL:
7963fa48 967 case VIDIOC_S_CTRL:
92f45bad
HV		 968 case VIDIOC_G_TUNER:
969 case VIDIOC_S_TUNER:
970 case VIDIOC_G_AUDIO:
971 case VIDIOC_S_AUDIO:
13d133bc 972 case VIDIOC_QUERYCTRL:
92f45bad 973 case VIDIOC_QUERYMENU:
13d133bc
PDM		 974 case VIDIOC_G_INPUT32:
975 case VIDIOC_S_INPUT32:
92f45bad
HV		 976 case VIDIOC_G_OUTPUT32:
977 case VIDIOC_S_OUTPUT32:
978 case VIDIOC_ENUMOUTPUT:
979 case VIDIOC_G_AUDOUT:
980 case VIDIOC_S_AUDOUT:
981 case VIDIOC_G_MODULATOR:
982 case VIDIOC_S_MODULATOR:
983 case VIDIOC_S_FREQUENCY:
984 case VIDIOC_G_FREQUENCY:
985 case VIDIOC_CROPCAP:
986 case VIDIOC_G_CROP:
987 case VIDIOC_S_CROP:
0e8caace
TS		 988 case VIDIOC_G_SELECTION:
989 case VIDIOC_S_SELECTION:
92f45bad
HV		 990 case VIDIOC_G_JPEGCOMP:
991 case VIDIOC_S_JPEGCOMP:
992 case VIDIOC_QUERYSTD:
13d133bc 993 case VIDIOC_TRY_FMT32:
92f45bad
HV		 994 case VIDIOC_ENUMAUDIO:
995 case VIDIOC_ENUMAUDOUT:
996 case VIDIOC_G_PRIORITY:
997 case VIDIOC_S_PRIORITY:
998 case VIDIOC_G_SLICED_VBI_CAP:
999 case VIDIOC_LOG_STATUS:
1000 case VIDIOC_G_EXT_CTRLS32:
1001 case VIDIOC_S_EXT_CTRLS32:
1002 case VIDIOC_TRY_EXT_CTRLS32:
c7f09db6
GJ		 1003 case VIDIOC_ENUM_FRAMESIZES:
1004 case VIDIOC_ENUM_FRAMEINTERVALS:
92f45bad
HV		 1005 case VIDIOC_G_ENC_INDEX:
1006 case VIDIOC_ENCODER_CMD:
1007 case VIDIOC_TRY_ENCODER_CMD:
a45c0ad5
HV		 1008 case VIDIOC_DECODER_CMD:
1009 case VIDIOC_TRY_DECODER_CMD:
92f45bad
HV		 1010 case VIDIOC_DBG_S_REGISTER:
1011 case VIDIOC_DBG_G_REGISTER:
aecde8b5 1012 case VIDIOC_DBG_G_CHIP_IDENT:
92f45bad 1013 case VIDIOC_S_HW_FREQ_SEEK:
b6456c0c
MK		 1014 case VIDIOC_ENUM_DV_PRESETS:
1015 case VIDIOC_S_DV_PRESET:
1016 case VIDIOC_G_DV_PRESET:
1017 case VIDIOC_QUERY_DV_PRESET:
1018 case VIDIOC_S_DV_TIMINGS:
1019 case VIDIOC_G_DV_TIMINGS:
fda10214 1020 case VIDIOC_DQEVENT:
2330fb82 1021 case VIDIOC_DQEVENT32:
fda10214
SA		 1022 case VIDIOC_SUBSCRIBE_EVENT:
1023 case VIDIOC_UNSUBSCRIBE_EVENT:
2150158b
GL		 1024 case VIDIOC_CREATE_BUFS32:
1025 case VIDIOC_PREPARE_BUF32:
0d0fbf81
AB		 1026 ret = do_video_ioctl(file, cmd, arg);
1027 break;
1028
a113bc78 1029 default:
7943ecf1
HV		 1030 printk(KERN_WARNING "compat_ioctl32: "
1031 "unknown ioctl '%c', dir=%d, #%d (0x%08x)\n",
1032 _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), cmd);
7d4f0b81 1033 break;