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V4L/DVB (12543): v4l: introduce string control support.
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / v4l2-compat-ioctl32.c
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
8 * Copyright (C) 2003 Pavel Machek (pavel@suse.cz)
9 * Copyright (C) 2005 Philippe De Muyter (phdm@macqel.be)
10 * Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
11 *
12 * These routines maintain argument size conversion between 32bit and 64bit
13 * ioctls.
14 */
15
16 #include <linux/compat.h>
17 #define __OLD_VIDIOC_ /* To allow fixing old calls*/
18 #include <linux/videodev.h>
19 #include <linux/videodev2.h>
20 #include <linux/module.h>
21 #include <linux/smp_lock.h>
22 #include <media/v4l2-ioctl.h>
23
24 #ifdef CONFIG_COMPAT
25
26 #ifdef CONFIG_VIDEO_V4L1_COMPAT
27 struct video_tuner32 {
28 compat_int_t tuner;
29 char name[32];
30 compat_ulong_t rangelow, rangehigh;
31 u32 flags; /* It is really u32 in videodev.h */
32 u16 mode, signal;
33 };
34
35 static int get_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
36 {
37 if (!access_ok(VERIFY_READ, up, sizeof(struct video_tuner32)) ||
38 get_user(kp->tuner, &up->tuner) ||
39 copy_from_user(kp->name, up->name, 32) ||
40 get_user(kp->rangelow, &up->rangelow) ||
41 get_user(kp->rangehigh, &up->rangehigh) ||
42 get_user(kp->flags, &up->flags) ||
43 get_user(kp->mode, &up->mode) ||
44 get_user(kp->signal, &up->signal))
45 return -EFAULT;
46 return 0;
47 }
48
49 static int put_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
50 {
51 if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_tuner32)) ||
52 put_user(kp->tuner, &up->tuner) ||
53 copy_to_user(up->name, kp->name, 32) ||
54 put_user(kp->rangelow, &up->rangelow) ||
55 put_user(kp->rangehigh, &up->rangehigh) ||
56 put_user(kp->flags, &up->flags) ||
57 put_user(kp->mode, &up->mode) ||
58 put_user(kp->signal, &up->signal))
59 return -EFAULT;
60 return 0;
61 }
62
63 struct video_buffer32 {
64 compat_caddr_t base;
65 compat_int_t height, width, depth, bytesperline;
66 };
67
68 static int get_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
69 {
70 u32 tmp;
71
72 if (!access_ok(VERIFY_READ, up, sizeof(struct video_buffer32)) ||
73 get_user(tmp, &up->base) ||
74 get_user(kp->height, &up->height) ||
75 get_user(kp->width, &up->width) ||
76 get_user(kp->depth, &up->depth) ||
77 get_user(kp->bytesperline, &up->bytesperline))
78 return -EFAULT;
79
80 /* This is actually a physical address stored
81 * as a void pointer.
82 */
83 kp->base = (void *)(unsigned long) tmp;
84
85 return 0;
86 }
87
88 static int put_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
89 {
90 u32 tmp = (u32)((unsigned long)kp->base);
91
92 if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_buffer32)) ||
93 put_user(tmp, &up->base) ||
94 put_user(kp->height, &up->height) ||
95 put_user(kp->width, &up->width) ||
96 put_user(kp->depth, &up->depth) ||
97 put_user(kp->bytesperline, &up->bytesperline))
98 return -EFAULT;
99 return 0;
100 }
101
102 struct video_clip32 {
103 s32 x, y, width, height; /* It's really s32 in videodev.h */
104 compat_caddr_t next;
105 };
106
107 struct video_window32 {
108 u32 x, y, width, height, chromakey, flags;
109 compat_caddr_t clips;
110 compat_int_t clipcount;
111 };
112
113 static int get_video_window32(struct video_window *kp, struct video_window32 __user *up)
114 {
115 struct video_clip __user *uclips;
116 struct video_clip __user *kclips;
117 compat_caddr_t p;
118 int nclips;
119
120 if (!access_ok(VERIFY_READ, up, sizeof(struct video_window32)))
121 return -EFAULT;
122
123 if (get_user(nclips, &up->clipcount))
124 return -EFAULT;
125
126 if (!access_ok(VERIFY_READ, up, sizeof(struct video_window32)) ||
127 get_user(kp->x, &up->x) ||
128 get_user(kp->y, &up->y) ||
129 get_user(kp->width, &up->width) ||
130 get_user(kp->height, &up->height) ||
131 get_user(kp->chromakey, &up->chromakey) ||
132 get_user(kp->flags, &up->flags) ||
133 get_user(kp->clipcount, &up->clipcount))
134 return -EFAULT;
135
136 nclips = kp->clipcount;
137 kp->clips = NULL;
138
139 if (nclips == 0)
140 return 0;
141 if (get_user(p, &up->clips))
142 return -EFAULT;
143 uclips = compat_ptr(p);
144
145 /* If nclips < 0, then it is a clipping bitmap of size
146 VIDEO_CLIPMAP_SIZE */
147 if (nclips < 0) {
148 if (!access_ok(VERIFY_READ, uclips, VIDEO_CLIPMAP_SIZE))
149 return -EFAULT;
150 kp->clips = compat_alloc_user_space(VIDEO_CLIPMAP_SIZE);
151 if (copy_in_user(kp->clips, uclips, VIDEO_CLIPMAP_SIZE))
152 return -EFAULT;
153 return 0;
154 }
155
156 /* Otherwise it is an array of video_clip structs. */
157 if (!access_ok(VERIFY_READ, uclips, nclips * sizeof(struct video_clip)))
158 return -EFAULT;
159
160 kp->clips = compat_alloc_user_space(nclips * sizeof(struct video_clip));
161 kclips = kp->clips;
162 while (nclips--) {
163 int err;
164
165 err = copy_in_user(&kclips->x, &uclips->x, sizeof(kclips->x));
166 err |= copy_in_user(&kclips->y, &uclips->y, sizeof(kclips->y));
167 err |= copy_in_user(&kclips->width, &uclips->width, sizeof(kclips->width));
168 err |= copy_in_user(&kclips->height, &uclips->height, sizeof(kclips->height));
169 kclips->next = NULL;
170 if (err)
171 return -EFAULT;
172 kclips++;
173 uclips++;
174 }
175 return 0;
176 }
177
178 /* You get back everything except the clips... */
179 static int put_video_window32(struct video_window *kp, struct video_window32 __user *up)
180 {
181 if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_window32)) ||
182 put_user(kp->x, &up->x) ||
183 put_user(kp->y, &up->y) ||
184 put_user(kp->width, &up->width) ||
185 put_user(kp->height, &up->height) ||
186 put_user(kp->chromakey, &up->chromakey) ||
187 put_user(kp->flags, &up->flags) ||
188 put_user(kp->clipcount, &up->clipcount))
189 return -EFAULT;
190 return 0;
191 }
192
193 struct video_code32 {
194 char loadwhat[16]; /* name or tag of file being passed */
195 compat_int_t datasize;
196 unsigned char *data;
197 };
198
199 static int get_microcode32(struct video_code *kp, struct video_code32 __user *up)
200 {
201 if (!access_ok(VERIFY_READ, up, sizeof(struct video_code32)) ||
202 copy_from_user(kp->loadwhat, up->loadwhat, sizeof(up->loadwhat)) ||
203 get_user(kp->datasize, &up->datasize) ||
204 copy_from_user(kp->data, up->data, up->datasize))
205 return -EFAULT;
206 return 0;
207 }
208
209 #define VIDIOCGTUNER32 _IOWR('v', 4, struct video_tuner32)
210 #define VIDIOCSTUNER32 _IOW('v', 5, struct video_tuner32)
211 #define VIDIOCGWIN32 _IOR('v', 9, struct video_window32)
212 #define VIDIOCSWIN32 _IOW('v', 10, struct video_window32)
213 #define VIDIOCGFBUF32 _IOR('v', 11, struct video_buffer32)
214 #define VIDIOCSFBUF32 _IOW('v', 12, struct video_buffer32)
215 #define VIDIOCGFREQ32 _IOR('v', 14, u32)
216 #define VIDIOCSFREQ32 _IOW('v', 15, u32)
217 #define VIDIOCSMICROCODE32 _IOW('v', 27, struct video_code32)
218
219 #define VIDIOCCAPTURE32 _IOW('v', 8, s32)
220 #define VIDIOCSYNC32 _IOW('v', 18, s32)
221 #define VIDIOCSWRITEMODE32 _IOW('v', 25, s32)
222
223 #endif
224
225 static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
226 {
227 long ret = -ENOIOCTLCMD;
228
229 if (file->f_op->unlocked_ioctl)
230 ret = file->f_op->unlocked_ioctl(file, cmd, arg);
231 else if (file->f_op->ioctl) {
232 lock_kernel();
233 ret = file->f_op->ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
234 unlock_kernel();
235 }
236
237 return ret;
238 }
239
240
241 struct v4l2_clip32 {
242 struct v4l2_rect c;
243 compat_caddr_t next;
244 };
245
246 struct v4l2_window32 {
247 struct v4l2_rect w;
248 enum v4l2_field field;
249 __u32 chromakey;
250 compat_caddr_t clips; /* actually struct v4l2_clip32 * */
251 __u32 clipcount;
252 compat_caddr_t bitmap;
253 };
254
255 static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
256 {
257 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
258 copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
259 get_user(kp->field, &up->field) ||
260 get_user(kp->chromakey, &up->chromakey) ||
261 get_user(kp->clipcount, &up->clipcount))
262 return -EFAULT;
263 if (kp->clipcount > 2048)
264 return -EINVAL;
265 if (kp->clipcount) {
266 struct v4l2_clip32 __user *uclips;
267 struct v4l2_clip __user *kclips;
268 int n = kp->clipcount;
269 compat_caddr_t p;
270
271 if (get_user(p, &up->clips))
272 return -EFAULT;
273 uclips = compat_ptr(p);
274 kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
275 kp->clips = kclips;
276 while (--n >= 0) {
277 if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
278 return -EFAULT;
279 if (put_user(n ? kclips + 1 : NULL, &kclips->next))
280 return -EFAULT;
281 uclips += 1;
282 kclips += 1;
283 }
284 } else
285 kp->clips = NULL;
286 return 0;
287 }
288
289 static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
290 {
291 if (copy_to_user(&up->w, &kp->w, sizeof(up->w)) ||
292 put_user(kp->field, &up->field) ||
293 put_user(kp->chromakey, &up->chromakey) ||
294 put_user(kp->clipcount, &up->clipcount))
295 return -EFAULT;
296 return 0;
297 }
298
299 static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
300 {
301 if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
302 return -EFAULT;
303 return 0;
304 }
305
306 static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
307 {
308 if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
309 return -EFAULT;
310 return 0;
311 }
312
313 static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
314 {
315 if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
316 return -EFAULT;
317 return 0;
318 }
319
320 static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
321 {
322 if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
323 return -EFAULT;
324 return 0;
325 }
326
327 static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
328 {
329 if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
330 return -EFAULT;
331 return 0;
332 }
333
334 static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
335 {
336 if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
337 return -EFAULT;
338 return 0;
339 }
340
341 struct v4l2_format32 {
342 enum v4l2_buf_type type;
343 union {
344 struct v4l2_pix_format pix;
345 struct v4l2_window32 win;
346 struct v4l2_vbi_format vbi;
347 struct v4l2_sliced_vbi_format sliced;
348 __u8 raw_data[200]; /* user-defined */
349 } fmt;
350 };
351
352 static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
353 {
354 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) ||
355 get_user(kp->type, &up->type))
356 return -EFAULT;
357 switch (kp->type) {
358 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
359 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
360 return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
361 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
362 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
363 return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
364 case V4L2_BUF_TYPE_VBI_CAPTURE:
365 case V4L2_BUF_TYPE_VBI_OUTPUT:
366 return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
367 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
368 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
369 return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
370 case V4L2_BUF_TYPE_PRIVATE:
371 if (copy_from_user(kp, up, sizeof(kp->fmt.raw_data)))
372 return -EFAULT;
373 return 0;
374 case 0:
375 return -EINVAL;
376 default:
377 printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
378 kp->type);
379 return -EINVAL;
380 }
381 }
382
383 static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
384 {
385 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) ||
386 put_user(kp->type, &up->type))
387 return -EFAULT;
388 switch (kp->type) {
389 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
390 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
391 return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
392 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
393 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
394 return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
395 case V4L2_BUF_TYPE_VBI_CAPTURE:
396 case V4L2_BUF_TYPE_VBI_OUTPUT:
397 return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
398 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
399 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
400 return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
401 case V4L2_BUF_TYPE_PRIVATE:
402 if (copy_to_user(up, kp, sizeof(up->fmt.raw_data)))
403 return -EFAULT;
404 return 0;
405 case 0:
406 return -EINVAL;
407 default:
408 printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
409 kp->type);
410 return -EINVAL;
411 }
412 }
413
414 struct v4l2_standard32 {
415 __u32 index;
416 __u32 id[2]; /* __u64 would get the alignment wrong */
417 __u8 name[24];
418 struct v4l2_fract frameperiod; /* Frames, not fields */
419 __u32 framelines;
420 __u32 reserved[4];
421 };
422
423 static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
424 {
425 /* other fields are not set by the user, nor used by the driver */
426 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
427 get_user(kp->index, &up->index))
428 return -EFAULT;
429 return 0;
430 }
431
432 static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
433 {
434 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
435 put_user(kp->index, &up->index) ||
436 copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
437 copy_to_user(up->name, kp->name, 24) ||
438 copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
439 put_user(kp->framelines, &up->framelines) ||
440 copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
441 return -EFAULT;
442 return 0;
443 }
444
445 struct v4l2_buffer32 {
446 __u32 index;
447 enum v4l2_buf_type type;
448 __u32 bytesused;
449 __u32 flags;
450 enum v4l2_field field;
451 struct compat_timeval timestamp;
452 struct v4l2_timecode timecode;
453 __u32 sequence;
454
455 /* memory location */
456 enum v4l2_memory memory;
457 union {
458 __u32 offset;
459 compat_long_t userptr;
460 } m;
461 __u32 length;
462 __u32 input;
463 __u32 reserved;
464 };
465
466 static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
467 {
468
469 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
470 get_user(kp->index, &up->index) ||
471 get_user(kp->type, &up->type) ||
472 get_user(kp->flags, &up->flags) ||
473 get_user(kp->memory, &up->memory) ||
474 get_user(kp->input, &up->input))
475 return -EFAULT;
476 switch (kp->memory) {
477 case V4L2_MEMORY_MMAP:
478 break;
479 case V4L2_MEMORY_USERPTR:
480 {
481 compat_long_t tmp;
482
483 if (get_user(kp->length, &up->length) ||
484 get_user(tmp, &up->m.userptr))
485 return -EFAULT;
486
487 kp->m.userptr = (unsigned long)compat_ptr(tmp);
488 }
489 break;
490 case V4L2_MEMORY_OVERLAY:
491 if (get_user(kp->m.offset, &up->m.offset))
492 return -EFAULT;
493 break;
494 }
495 return 0;
496 }
497
498 static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
499 {
500 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
501 put_user(kp->index, &up->index) ||
502 put_user(kp->type, &up->type) ||
503 put_user(kp->flags, &up->flags) ||
504 put_user(kp->memory, &up->memory) ||
505 put_user(kp->input, &up->input))
506 return -EFAULT;
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 if (put_user(kp->bytesused, &up->bytesused) ||
524 put_user(kp->field, &up->field) ||
525 put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
526 put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
527 copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
528 put_user(kp->sequence, &up->sequence) ||
529 put_user(kp->reserved, &up->reserved))
530 return -EFAULT;
531 return 0;
532 }
533
534 struct v4l2_framebuffer32 {
535 __u32 capability;
536 __u32 flags;
537 compat_caddr_t base;
538 struct v4l2_pix_format fmt;
539 };
540
541 static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
542 {
543 u32 tmp;
544
545 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
546 get_user(tmp, &up->base) ||
547 get_user(kp->capability, &up->capability) ||
548 get_user(kp->flags, &up->flags))
549 return -EFAULT;
550 kp->base = compat_ptr(tmp);
551 get_v4l2_pix_format(&kp->fmt, &up->fmt);
552 return 0;
553 }
554
555 static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
556 {
557 u32 tmp = (u32)((unsigned long)kp->base);
558
559 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
560 put_user(tmp, &up->base) ||
561 put_user(kp->capability, &up->capability) ||
562 put_user(kp->flags, &up->flags))
563 return -EFAULT;
564 put_v4l2_pix_format(&kp->fmt, &up->fmt);
565 return 0;
566 }
567
568 struct v4l2_input32 {
569 __u32 index; /* Which input */
570 __u8 name[32]; /* Label */
571 __u32 type; /* Type of input */
572 __u32 audioset; /* Associated audios (bitfield) */
573 __u32 tuner; /* Associated tuner */
574 v4l2_std_id std;
575 __u32 status;
576 __u32 reserved[4];
577 } __attribute__ ((packed));
578
579 /* The 64-bit v4l2_input struct has extra padding at the end of the struct.
580 Otherwise it is identical to the 32-bit version. */
581 static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
582 {
583 if (copy_from_user(kp, up, sizeof(struct v4l2_input32)))
584 return -EFAULT;
585 return 0;
586 }
587
588 static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
589 {
590 if (copy_to_user(up, kp, sizeof(struct v4l2_input32)))
591 return -EFAULT;
592 return 0;
593 }
594
595 struct v4l2_ext_controls32 {
596 __u32 ctrl_class;
597 __u32 count;
598 __u32 error_idx;
599 __u32 reserved[2];
600 compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
601 };
602
603 struct v4l2_ext_control32 {
604 __u32 id;
605 __u32 size;
606 __u32 reserved2[1];
607 union {
608 __s32 value;
609 __s64 value64;
610 compat_caddr_t string; /* actually char * */
611 };
612 } __attribute__ ((packed));
613
614 /* The following function really belong in v4l2-common, but that causes
615 a circular dependency between modules. We need to think about this, but
616 for now this will do. */
617
618 /* Return non-zero if this control is a pointer type. Currently only
619 * type STRING is a pointer type.
620 *
621 * Note that there are currently no controls of this type, but at least the
622 * compat32 code is in place to properly handle such controls. Please
623 * remove this note once the first pointer controls are added. */
624 static inline int ctrl_is_pointer(u32 id)
625 {
626 return 0;
627 }
628
629 static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
630 {
631 struct v4l2_ext_control32 __user *ucontrols;
632 struct v4l2_ext_control __user *kcontrols;
633 int n;
634 compat_caddr_t p;
635
636 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
637 get_user(kp->ctrl_class, &up->ctrl_class) ||
638 get_user(kp->count, &up->count) ||
639 get_user(kp->error_idx, &up->error_idx) ||
640 copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
641 return -EFAULT;
642 n = kp->count;
643 if (n == 0) {
644 kp->controls = NULL;
645 return 0;
646 }
647 if (get_user(p, &up->controls))
648 return -EFAULT;
649 ucontrols = compat_ptr(p);
650 if (!access_ok(VERIFY_READ, ucontrols, n * sizeof(struct v4l2_ext_control)))
651 return -EFAULT;
652 kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
653 kp->controls = kcontrols;
654 while (--n >= 0) {
655 if (copy_in_user(kcontrols, ucontrols, sizeof(*kcontrols)))
656 return -EFAULT;
657 if (ctrl_is_pointer(kcontrols->id)) {
658 void __user *s;
659
660 if (get_user(p, &ucontrols->string))
661 return -EFAULT;
662 s = compat_ptr(p);
663 if (put_user(s, &kcontrols->string))
664 return -EFAULT;
665 }
666 ucontrols++;
667 kcontrols++;
668 }
669 return 0;
670 }
671
672 static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
673 {
674 struct v4l2_ext_control32 __user *ucontrols;
675 struct v4l2_ext_control __user *kcontrols = kp->controls;
676 int n = kp->count;
677 compat_caddr_t p;
678
679 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
680 put_user(kp->ctrl_class, &up->ctrl_class) ||
681 put_user(kp->count, &up->count) ||
682 put_user(kp->error_idx, &up->error_idx) ||
683 copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
684 return -EFAULT;
685 if (!kp->count)
686 return 0;
687
688 if (get_user(p, &up->controls))
689 return -EFAULT;
690 ucontrols = compat_ptr(p);
691 if (!access_ok(VERIFY_WRITE, ucontrols, n * sizeof(struct v4l2_ext_control)))
692 return -EFAULT;
693
694 while (--n >= 0) {
695 unsigned size = sizeof(*ucontrols);
696
697 /* Do not modify the pointer when copying a pointer control.
698 The contents of the pointer was changed, not the pointer
699 itself. */
700 if (ctrl_is_pointer(kcontrols->id))
701 size -= sizeof(ucontrols->value64);
702 if (copy_in_user(ucontrols, kcontrols, size))
703 return -EFAULT;
704 ucontrols++;
705 kcontrols++;
706 }
707 return 0;
708 }
709
710 #define VIDIOC_G_FMT32 _IOWR('V', 4, struct v4l2_format32)
711 #define VIDIOC_S_FMT32 _IOWR('V', 5, struct v4l2_format32)
712 #define VIDIOC_QUERYBUF32 _IOWR('V', 9, struct v4l2_buffer32)
713 #define VIDIOC_G_FBUF32 _IOR ('V', 10, struct v4l2_framebuffer32)
714 #define VIDIOC_S_FBUF32 _IOW ('V', 11, struct v4l2_framebuffer32)
715 #define VIDIOC_QBUF32 _IOWR('V', 15, struct v4l2_buffer32)
716 #define VIDIOC_DQBUF32 _IOWR('V', 17, struct v4l2_buffer32)
717 #define VIDIOC_ENUMSTD32 _IOWR('V', 25, struct v4l2_standard32)
718 #define VIDIOC_ENUMINPUT32 _IOWR('V', 26, struct v4l2_input32)
719 #define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32)
720 #define VIDIOC_G_EXT_CTRLS32 _IOWR('V', 71, struct v4l2_ext_controls32)
721 #define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32)
722 #define VIDIOC_TRY_EXT_CTRLS32 _IOWR('V', 73, struct v4l2_ext_controls32)
723
724 #define VIDIOC_OVERLAY32 _IOW ('V', 14, s32)
725 #ifdef __OLD_VIDIOC_
726 #define VIDIOC_OVERLAY32_OLD _IOWR('V', 14, s32)
727 #endif
728 #define VIDIOC_STREAMON32 _IOW ('V', 18, s32)
729 #define VIDIOC_STREAMOFF32 _IOW ('V', 19, s32)
730 #define VIDIOC_G_INPUT32 _IOR ('V', 38, s32)
731 #define VIDIOC_S_INPUT32 _IOWR('V', 39, s32)
732 #define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32)
733 #define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32)
734
735 static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
736 {
737 union {
738 #ifdef CONFIG_VIDEO_V4L1_COMPAT
739 struct video_tuner vt;
740 struct video_buffer vb;
741 struct video_window vw;
742 struct video_code vc;
743 struct video_audio va;
744 #endif
745 struct v4l2_format v2f;
746 struct v4l2_buffer v2b;
747 struct v4l2_framebuffer v2fb;
748 struct v4l2_input v2i;
749 struct v4l2_standard v2s;
750 struct v4l2_ext_controls v2ecs;
751 unsigned long vx;
752 int vi;
753 } karg;
754 void __user *up = compat_ptr(arg);
755 int compatible_arg = 1;
756 long err = 0;
757
758 /* First, convert the command. */
759 switch (cmd) {
760 #ifdef CONFIG_VIDEO_V4L1_COMPAT
761 case VIDIOCGTUNER32: cmd = VIDIOCGTUNER; break;
762 case VIDIOCSTUNER32: cmd = VIDIOCSTUNER; break;
763 case VIDIOCGWIN32: cmd = VIDIOCGWIN; break;
764 case VIDIOCSWIN32: cmd = VIDIOCSWIN; break;
765 case VIDIOCGFBUF32: cmd = VIDIOCGFBUF; break;
766 case VIDIOCSFBUF32: cmd = VIDIOCSFBUF; break;
767 case VIDIOCGFREQ32: cmd = VIDIOCGFREQ; break;
768 case VIDIOCSFREQ32: cmd = VIDIOCSFREQ; break;
769 case VIDIOCSMICROCODE32: cmd = VIDIOCSMICROCODE; break;
770 #endif
771 case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;
772 case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break;
773 case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break;
774 case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break;
775 case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break;
776 case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break;
777 case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break;
778 case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break;
779 case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break;
780 case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break;
781 case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break;
782 case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break;
783 case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break;
784 case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break;
785 #ifdef __OLD_VIDIOC_
786 case VIDIOC_OVERLAY32_OLD: cmd = VIDIOC_OVERLAY; break;
787 #endif
788 case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break;
789 case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break;
790 case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break;
791 case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
792 case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
793 case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
794 }
795
796 switch (cmd) {
797 #ifdef CONFIG_VIDEO_V4L1_COMPAT
798 case VIDIOCSTUNER:
799 case VIDIOCGTUNER:
800 err = get_video_tuner32(&karg.vt, up);
801 compatible_arg = 0;
802 break;
803
804 case VIDIOCSFBUF:
805 err = get_video_buffer32(&karg.vb, up);
806 compatible_arg = 0;
807 break;
808
809 case VIDIOCSWIN:
810 err = get_video_window32(&karg.vw, up);
811 compatible_arg = 0;
812 break;
813
814 case VIDIOCGWIN:
815 case VIDIOCGFBUF:
816 case VIDIOCGFREQ:
817 compatible_arg = 0;
818 break;
819
820 case VIDIOCSMICROCODE:
821 err = get_microcode32(&karg.vc, up);
822 compatible_arg = 0;
823 break;
824
825 case VIDIOCSFREQ:
826 err = get_user(karg.vx, (u32 __user *)up);
827 compatible_arg = 0;
828 break;
829
830 case VIDIOCCAPTURE:
831 case VIDIOCSYNC:
832 case VIDIOCSWRITEMODE:
833 #endif
834 case VIDIOC_OVERLAY:
835 case VIDIOC_STREAMON:
836 case VIDIOC_STREAMOFF:
837 case VIDIOC_S_INPUT:
838 case VIDIOC_S_OUTPUT:
839 err = get_user(karg.vi, (s32 __user *)up);
840 compatible_arg = 0;
841 break;
842
843 case VIDIOC_G_INPUT:
844 case VIDIOC_G_OUTPUT:
845 compatible_arg = 0;
846 break;
847
848 case VIDIOC_G_FMT:
849 case VIDIOC_S_FMT:
850 case VIDIOC_TRY_FMT:
851 err = get_v4l2_format32(&karg.v2f, up);
852 compatible_arg = 0;
853 break;
854
855 case VIDIOC_QUERYBUF:
856 case VIDIOC_QBUF:
857 case VIDIOC_DQBUF:
858 err = get_v4l2_buffer32(&karg.v2b, up);
859 compatible_arg = 0;
860 break;
861
862 case VIDIOC_S_FBUF:
863 err = get_v4l2_framebuffer32(&karg.v2fb, up);
864 compatible_arg = 0;
865 break;
866
867 case VIDIOC_G_FBUF:
868 compatible_arg = 0;
869 break;
870
871 case VIDIOC_ENUMSTD:
872 err = get_v4l2_standard32(&karg.v2s, up);
873 compatible_arg = 0;
874 break;
875
876 case VIDIOC_ENUMINPUT:
877 err = get_v4l2_input32(&karg.v2i, up);
878 compatible_arg = 0;
879 break;
880
881 case VIDIOC_G_EXT_CTRLS:
882 case VIDIOC_S_EXT_CTRLS:
883 case VIDIOC_TRY_EXT_CTRLS:
884 err = get_v4l2_ext_controls32(&karg.v2ecs, up);
885 compatible_arg = 0;
886 break;
887 }
888 if (err)
889 return err;
890
891 if (compatible_arg)
892 err = native_ioctl(file, cmd, (unsigned long)up);
893 else {
894 mm_segment_t old_fs = get_fs();
895
896 set_fs(KERNEL_DS);
897 err = native_ioctl(file, cmd, (unsigned long)&karg);
898 set_fs(old_fs);
899 }
900
901 /* Special case: even after an error we need to put the
902 results back for these ioctls since the error_idx will
903 contain information on which control failed. */
904 switch (cmd) {
905 case VIDIOC_G_EXT_CTRLS:
906 case VIDIOC_S_EXT_CTRLS:
907 case VIDIOC_TRY_EXT_CTRLS:
908 if (put_v4l2_ext_controls32(&karg.v2ecs, up))
909 err = -EFAULT;
910 break;
911 }
912 if (err)
913 return err;
914
915 switch (cmd) {
916 #ifdef CONFIG_VIDEO_V4L1_COMPAT
917 case VIDIOCGTUNER:
918 err = put_video_tuner32(&karg.vt, up);
919 break;
920
921 case VIDIOCGWIN:
922 err = put_video_window32(&karg.vw, up);
923 break;
924
925 case VIDIOCGFBUF:
926 err = put_video_buffer32(&karg.vb, up);
927 break;
928
929 case VIDIOCGFREQ:
930 err = put_user(((u32)karg.vx), (u32 __user *)up);
931 break;
932 #endif
933 case VIDIOC_S_INPUT:
934 case VIDIOC_S_OUTPUT:
935 case VIDIOC_G_INPUT:
936 case VIDIOC_G_OUTPUT:
937 err = put_user(((s32)karg.vi), (s32 __user *)up);
938 break;
939
940 case VIDIOC_G_FBUF:
941 err = put_v4l2_framebuffer32(&karg.v2fb, up);
942 break;
943
944 case VIDIOC_G_FMT:
945 case VIDIOC_S_FMT:
946 case VIDIOC_TRY_FMT:
947 err = put_v4l2_format32(&karg.v2f, up);
948 break;
949
950 case VIDIOC_QUERYBUF:
951 case VIDIOC_QBUF:
952 case VIDIOC_DQBUF:
953 err = put_v4l2_buffer32(&karg.v2b, up);
954 break;
955
956 case VIDIOC_ENUMSTD:
957 err = put_v4l2_standard32(&karg.v2s, up);
958 break;
959
960 case VIDIOC_ENUMINPUT:
961 err = put_v4l2_input32(&karg.v2i, up);
962 break;
963 }
964 return err;
965 }
966
967 long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
968 {
969 long ret = -ENOIOCTLCMD;
970
971 if (!file->f_op->ioctl && !file->f_op->unlocked_ioctl)
972 return ret;
973
974 switch (cmd) {
975 #ifdef CONFIG_VIDEO_V4L1_COMPAT
976 case VIDIOCGCAP:
977 case VIDIOCGCHAN:
978 case VIDIOCSCHAN:
979 case VIDIOCGTUNER32:
980 case VIDIOCSTUNER32:
981 case VIDIOCGPICT:
982 case VIDIOCSPICT:
983 case VIDIOCCAPTURE32:
984 case VIDIOCGWIN32:
985 case VIDIOCSWIN32:
986 case VIDIOCGFBUF32:
987 case VIDIOCSFBUF32:
988 case VIDIOCKEY:
989 case VIDIOCGFREQ32:
990 case VIDIOCSFREQ32:
991 case VIDIOCGAUDIO:
992 case VIDIOCSAUDIO:
993 case VIDIOCSYNC32:
994 case VIDIOCMCAPTURE:
995 case VIDIOCGMBUF:
996 case VIDIOCGUNIT:
997 case VIDIOCGCAPTURE:
998 case VIDIOCSCAPTURE:
999 case VIDIOCSPLAYMODE:
1000 case VIDIOCSWRITEMODE32:
1001 case VIDIOCGPLAYINFO:
1002 case VIDIOCSMICROCODE32:
1003 case VIDIOCGVBIFMT:
1004 case VIDIOCSVBIFMT:
1005 #endif
1006 #ifdef __OLD_VIDIOC_
1007 case VIDIOC_OVERLAY32_OLD:
1008 case VIDIOC_S_PARM_OLD:
1009 case VIDIOC_S_CTRL_OLD:
1010 case VIDIOC_G_AUDIO_OLD:
1011 case VIDIOC_G_AUDOUT_OLD:
1012 case VIDIOC_CROPCAP_OLD:
1013 #endif
1014 case VIDIOC_QUERYCAP:
1015 case VIDIOC_RESERVED:
1016 case VIDIOC_ENUM_FMT:
1017 case VIDIOC_G_FMT32:
1018 case VIDIOC_S_FMT32:
1019 case VIDIOC_REQBUFS:
1020 case VIDIOC_QUERYBUF32:
1021 case VIDIOC_G_FBUF32:
1022 case VIDIOC_S_FBUF32:
1023 case VIDIOC_OVERLAY32:
1024 case VIDIOC_QBUF32:
1025 case VIDIOC_DQBUF32:
1026 case VIDIOC_STREAMON32:
1027 case VIDIOC_STREAMOFF32:
1028 case VIDIOC_G_PARM:
1029 case VIDIOC_S_PARM:
1030 case VIDIOC_G_STD:
1031 case VIDIOC_S_STD:
1032 case VIDIOC_ENUMSTD32:
1033 case VIDIOC_ENUMINPUT32:
1034 case VIDIOC_G_CTRL:
1035 case VIDIOC_S_CTRL:
1036 case VIDIOC_G_TUNER:
1037 case VIDIOC_S_TUNER:
1038 case VIDIOC_G_AUDIO:
1039 case VIDIOC_S_AUDIO:
1040 case VIDIOC_QUERYCTRL:
1041 case VIDIOC_QUERYMENU:
1042 case VIDIOC_G_INPUT32:
1043 case VIDIOC_S_INPUT32:
1044 case VIDIOC_G_OUTPUT32:
1045 case VIDIOC_S_OUTPUT32:
1046 case VIDIOC_ENUMOUTPUT:
1047 case VIDIOC_G_AUDOUT:
1048 case VIDIOC_S_AUDOUT:
1049 case VIDIOC_G_MODULATOR:
1050 case VIDIOC_S_MODULATOR:
1051 case VIDIOC_S_FREQUENCY:
1052 case VIDIOC_G_FREQUENCY:
1053 case VIDIOC_CROPCAP:
1054 case VIDIOC_G_CROP:
1055 case VIDIOC_S_CROP:
1056 case VIDIOC_G_JPEGCOMP:
1057 case VIDIOC_S_JPEGCOMP:
1058 case VIDIOC_QUERYSTD:
1059 case VIDIOC_TRY_FMT32:
1060 case VIDIOC_ENUMAUDIO:
1061 case VIDIOC_ENUMAUDOUT:
1062 case VIDIOC_G_PRIORITY:
1063 case VIDIOC_S_PRIORITY:
1064 case VIDIOC_G_SLICED_VBI_CAP:
1065 case VIDIOC_LOG_STATUS:
1066 case VIDIOC_G_EXT_CTRLS32:
1067 case VIDIOC_S_EXT_CTRLS32:
1068 case VIDIOC_TRY_EXT_CTRLS32:
1069 case VIDIOC_ENUM_FRAMESIZES:
1070 case VIDIOC_ENUM_FRAMEINTERVALS:
1071 case VIDIOC_G_ENC_INDEX:
1072 case VIDIOC_ENCODER_CMD:
1073 case VIDIOC_TRY_ENCODER_CMD:
1074 case VIDIOC_DBG_S_REGISTER:
1075 case VIDIOC_DBG_G_REGISTER:
1076 case VIDIOC_DBG_G_CHIP_IDENT:
1077 case VIDIOC_S_HW_FREQ_SEEK:
1078 ret = do_video_ioctl(file, cmd, arg);
1079 break;
1080
1081 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1082 /* BTTV specific... */
1083 case _IOW('v', BASE_VIDIOCPRIVATE+0, char [256]):
1084 case _IOR('v', BASE_VIDIOCPRIVATE+1, char [256]):
1085 case _IOR('v' , BASE_VIDIOCPRIVATE+2, unsigned int):
1086 case _IOW('v' , BASE_VIDIOCPRIVATE+3, char [16]): /* struct bttv_pll_info */
1087 case _IOR('v' , BASE_VIDIOCPRIVATE+4, int):
1088 case _IOR('v' , BASE_VIDIOCPRIVATE+5, int):
1089 case _IOR('v' , BASE_VIDIOCPRIVATE+6, int):
1090 case _IOR('v' , BASE_VIDIOCPRIVATE+7, int):
1091 ret = native_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
1092 break;
1093 #endif
1094 default:
1095 printk(KERN_WARNING "compat_ioctl32: "
1096 "unknown ioctl '%c', dir=%d, #%d (0x%08x)\n",
1097 _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), cmd);
1098 break;
1099 }
1100 return ret;
1101 }
1102 EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32);
1103 #endif
1104
1105 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)