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init from v2.6.32.60
[mach-moxart.git] / drivers / media / video / v4l2-compat-ioctl32.c
blob64076ffec0e000bda9aa20027f3502305dd04d01
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 compat_uptr_t data;
197 };
198
199 static struct video_code __user *get_microcode32(struct video_code32 *kp)
200 {
201 struct video_code __user *up;
202
203 up = compat_alloc_user_space(sizeof(*up));
204
205 /*
206 * NOTE! We don't actually care if these fail. If the
207 * user address is invalid, the native ioctl will do
208 * the error handling for us
209 */
210 (void) copy_to_user(up->loadwhat, kp->loadwhat, sizeof(up->loadwhat));
211 (void) put_user(kp->datasize, &up->datasize);
212 (void) put_user(compat_ptr(kp->data), &up->data);
213 return up;
214 }
215
216 #define VIDIOCGTUNER32 _IOWR('v', 4, struct video_tuner32)
217 #define VIDIOCSTUNER32 _IOW('v', 5, struct video_tuner32)
218 #define VIDIOCGWIN32 _IOR('v', 9, struct video_window32)
219 #define VIDIOCSWIN32 _IOW('v', 10, struct video_window32)
220 #define VIDIOCGFBUF32 _IOR('v', 11, struct video_buffer32)
221 #define VIDIOCSFBUF32 _IOW('v', 12, struct video_buffer32)
222 #define VIDIOCGFREQ32 _IOR('v', 14, u32)
223 #define VIDIOCSFREQ32 _IOW('v', 15, u32)
224 #define VIDIOCSMICROCODE32 _IOW('v', 27, struct video_code32)
225
226 #define VIDIOCCAPTURE32 _IOW('v', 8, s32)
227 #define VIDIOCSYNC32 _IOW('v', 18, s32)
228 #define VIDIOCSWRITEMODE32 _IOW('v', 25, s32)
229
230 #endif
231
232 static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
233 {
234 long ret = -ENOIOCTLCMD;
235
236 if (file->f_op->unlocked_ioctl)
237 ret = file->f_op->unlocked_ioctl(file, cmd, arg);
238 else if (file->f_op->ioctl) {
239 lock_kernel();
240 ret = file->f_op->ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
241 unlock_kernel();
242 }
243
244 return ret;
245 }
246
247
248 struct v4l2_clip32 {
249 struct v4l2_rect c;
250 compat_caddr_t next;
251 };
252
253 struct v4l2_window32 {
254 struct v4l2_rect w;
255 enum v4l2_field field;
256 __u32 chromakey;
257 compat_caddr_t clips; /* actually struct v4l2_clip32 * */
258 __u32 clipcount;
259 compat_caddr_t bitmap;
260 };
261
262 static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
263 {
264 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
265 copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
266 get_user(kp->field, &up->field) ||
267 get_user(kp->chromakey, &up->chromakey) ||
268 get_user(kp->clipcount, &up->clipcount))
269 return -EFAULT;
270 if (kp->clipcount > 2048)
271 return -EINVAL;
272 if (kp->clipcount) {
273 struct v4l2_clip32 __user *uclips;
274 struct v4l2_clip __user *kclips;
275 int n = kp->clipcount;
276 compat_caddr_t p;
277
278 if (get_user(p, &up->clips))
279 return -EFAULT;
280 uclips = compat_ptr(p);
281 kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
282 kp->clips = kclips;
283 while (--n >= 0) {
284 if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
285 return -EFAULT;
286 if (put_user(n ? kclips + 1 : NULL, &kclips->next))
287 return -EFAULT;
288 uclips += 1;
289 kclips += 1;
290 }
291 } else
292 kp->clips = NULL;
293 return 0;
294 }
295
296 static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
297 {
298 if (copy_to_user(&up->w, &kp->w, sizeof(up->w)) ||
299 put_user(kp->field, &up->field) ||
300 put_user(kp->chromakey, &up->chromakey) ||
301 put_user(kp->clipcount, &up->clipcount))
302 return -EFAULT;
303 return 0;
304 }
305
306 static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
307 {
308 if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
309 return -EFAULT;
310 return 0;
311 }
312
313 static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
314 {
315 if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
316 return -EFAULT;
317 return 0;
318 }
319
320 static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
321 {
322 if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
323 return -EFAULT;
324 return 0;
325 }
326
327 static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
328 {
329 if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
330 return -EFAULT;
331 return 0;
332 }
333
334 static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
335 {
336 if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
337 return -EFAULT;
338 return 0;
339 }
340
341 static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
342 {
343 if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
344 return -EFAULT;
345 return 0;
346 }
347
348 struct v4l2_format32 {
349 enum v4l2_buf_type type;
350 union {
351 struct v4l2_pix_format pix;
352 struct v4l2_window32 win;
353 struct v4l2_vbi_format vbi;
354 struct v4l2_sliced_vbi_format sliced;
355 __u8 raw_data[200]; /* user-defined */
356 } fmt;
357 };
358
359 static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
360 {
361 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) ||
362 get_user(kp->type, &up->type))
363 return -EFAULT;
364 switch (kp->type) {
365 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
366 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
367 return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
368 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
369 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
370 return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
371 case V4L2_BUF_TYPE_VBI_CAPTURE:
372 case V4L2_BUF_TYPE_VBI_OUTPUT:
373 return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
374 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
375 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
376 return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
377 case V4L2_BUF_TYPE_PRIVATE:
378 if (copy_from_user(kp, up, sizeof(kp->fmt.raw_data)))
379 return -EFAULT;
380 return 0;
381 case 0:
382 return -EINVAL;
383 default:
384 printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
385 kp->type);
386 return -EINVAL;
387 }
388 }
389
390 static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
391 {
392 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) ||
393 put_user(kp->type, &up->type))
394 return -EFAULT;
395 switch (kp->type) {
396 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
397 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
398 return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
399 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
400 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
401 return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
402 case V4L2_BUF_TYPE_VBI_CAPTURE:
403 case V4L2_BUF_TYPE_VBI_OUTPUT:
404 return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
405 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
406 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
407 return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
408 case V4L2_BUF_TYPE_PRIVATE:
409 if (copy_to_user(up, kp, sizeof(up->fmt.raw_data)))
410 return -EFAULT;
411 return 0;
412 case 0:
413 return -EINVAL;
414 default:
415 printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
416 kp->type);
417 return -EINVAL;
418 }
419 }
420
421 struct v4l2_standard32 {
422 __u32 index;
423 __u32 id[2]; /* __u64 would get the alignment wrong */
424 __u8 name[24];
425 struct v4l2_fract frameperiod; /* Frames, not fields */
426 __u32 framelines;
427 __u32 reserved[4];
428 };
429
430 static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
431 {
432 /* other fields are not set by the user, nor used by the driver */
433 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
434 get_user(kp->index, &up->index))
435 return -EFAULT;
436 return 0;
437 }
438
439 static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
440 {
441 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
442 put_user(kp->index, &up->index) ||
443 copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
444 copy_to_user(up->name, kp->name, 24) ||
445 copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
446 put_user(kp->framelines, &up->framelines) ||
447 copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
448 return -EFAULT;
449 return 0;
450 }
451
452 struct v4l2_buffer32 {
453 __u32 index;
454 enum v4l2_buf_type type;
455 __u32 bytesused;
456 __u32 flags;
457 enum v4l2_field field;
458 struct compat_timeval timestamp;
459 struct v4l2_timecode timecode;
460 __u32 sequence;
461
462 /* memory location */
463 enum v4l2_memory memory;
464 union {
465 __u32 offset;
466 compat_long_t userptr;
467 } m;
468 __u32 length;
469 __u32 input;
470 __u32 reserved;
471 };
472
473 static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
474 {
475
476 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
477 get_user(kp->index, &up->index) ||
478 get_user(kp->type, &up->type) ||
479 get_user(kp->flags, &up->flags) ||
480 get_user(kp->memory, &up->memory) ||
481 get_user(kp->input, &up->input))
482 return -EFAULT;
483 switch (kp->memory) {
484 case V4L2_MEMORY_MMAP:
485 break;
486 case V4L2_MEMORY_USERPTR:
487 {
488 compat_long_t tmp;
489
490 if (get_user(kp->length, &up->length) ||
491 get_user(tmp, &up->m.userptr))
492 return -EFAULT;
493
494 kp->m.userptr = (unsigned long)compat_ptr(tmp);
495 }
496 break;
497 case V4L2_MEMORY_OVERLAY:
498 if (get_user(kp->m.offset, &up->m.offset))
499 return -EFAULT;
500 break;
501 }
502 return 0;
503 }
504
505 static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
506 {
507 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
508 put_user(kp->index, &up->index) ||
509 put_user(kp->type, &up->type) ||
510 put_user(kp->flags, &up->flags) ||
511 put_user(kp->memory, &up->memory) ||
512 put_user(kp->input, &up->input))
513 return -EFAULT;
514 switch (kp->memory) {
515 case V4L2_MEMORY_MMAP:
516 if (put_user(kp->length, &up->length) ||
517 put_user(kp->m.offset, &up->m.offset))
518 return -EFAULT;
519 break;
520 case V4L2_MEMORY_USERPTR:
521 if (put_user(kp->length, &up->length) ||
522 put_user(kp->m.userptr, &up->m.userptr))
523 return -EFAULT;
524 break;
525 case V4L2_MEMORY_OVERLAY:
526 if (put_user(kp->m.offset, &up->m.offset))
527 return -EFAULT;
528 break;
529 }
530 if (put_user(kp->bytesused, &up->bytesused) ||
531 put_user(kp->field, &up->field) ||
532 put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
533 put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
534 copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
535 put_user(kp->sequence, &up->sequence) ||
536 put_user(kp->reserved, &up->reserved))
537 return -EFAULT;
538 return 0;
539 }
540
541 struct v4l2_framebuffer32 {
542 __u32 capability;
543 __u32 flags;
544 compat_caddr_t base;
545 struct v4l2_pix_format fmt;
546 };
547
548 static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
549 {
550 u32 tmp;
551
552 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
553 get_user(tmp, &up->base) ||
554 get_user(kp->capability, &up->capability) ||
555 get_user(kp->flags, &up->flags))
556 return -EFAULT;
557 kp->base = compat_ptr(tmp);
558 get_v4l2_pix_format(&kp->fmt, &up->fmt);
559 return 0;
560 }
561
562 static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
563 {
564 u32 tmp = (u32)((unsigned long)kp->base);
565
566 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
567 put_user(tmp, &up->base) ||
568 put_user(kp->capability, &up->capability) ||
569 put_user(kp->flags, &up->flags))
570 return -EFAULT;
571 put_v4l2_pix_format(&kp->fmt, &up->fmt);
572 return 0;
573 }
574
575 struct v4l2_input32 {
576 __u32 index; /* Which input */
577 __u8 name[32]; /* Label */
578 __u32 type; /* Type of input */
579 __u32 audioset; /* Associated audios (bitfield) */
580 __u32 tuner; /* Associated tuner */
581 v4l2_std_id std;
582 __u32 status;
583 __u32 reserved[4];
584 } __attribute__ ((packed));
585
586 /* The 64-bit v4l2_input struct has extra padding at the end of the struct.
587 Otherwise it is identical to the 32-bit version. */
588 static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
589 {
590 if (copy_from_user(kp, up, sizeof(struct v4l2_input32)))
591 return -EFAULT;
592 return 0;
593 }
594
595 static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
596 {
597 if (copy_to_user(up, kp, sizeof(struct v4l2_input32)))
598 return -EFAULT;
599 return 0;
600 }
601
602 struct v4l2_ext_controls32 {
603 __u32 ctrl_class;
604 __u32 count;
605 __u32 error_idx;
606 __u32 reserved[2];
607 compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
608 };
609
610 struct v4l2_ext_control32 {
611 __u32 id;
612 __u32 size;
613 __u32 reserved2[1];
614 union {
615 __s32 value;
616 __s64 value64;
617 compat_caddr_t string; /* actually char * */
618 };
619 } __attribute__ ((packed));
620
621 /* The following function really belong in v4l2-common, but that causes
622 a circular dependency between modules. We need to think about this, but
623 for now this will do. */
624
625 /* Return non-zero if this control is a pointer type. Currently only
626 type STRING is a pointer type. */
627 static inline int ctrl_is_pointer(u32 id)
628 {
629 switch (id) {
630 case V4L2_CID_RDS_TX_PS_NAME:
631 case V4L2_CID_RDS_TX_RADIO_TEXT:
632 return 1;
633 default:
634 return 0;
635 }
636 }
637
638 static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
639 {
640 struct v4l2_ext_control32 __user *ucontrols;
641 struct v4l2_ext_control __user *kcontrols;
642 int n;
643 compat_caddr_t p;
644
645 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
646 get_user(kp->ctrl_class, &up->ctrl_class) ||
647 get_user(kp->count, &up->count) ||
648 get_user(kp->error_idx, &up->error_idx) ||
649 copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
650 return -EFAULT;
651 n = kp->count;
652 if (n == 0) {
653 kp->controls = NULL;
654 return 0;
655 }
656 if (get_user(p, &up->controls))
657 return -EFAULT;
658 ucontrols = compat_ptr(p);
659 if (!access_ok(VERIFY_READ, ucontrols, n * sizeof(struct v4l2_ext_control)))
660 return -EFAULT;
661 kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
662 kp->controls = kcontrols;
663 while (--n >= 0) {
664 if (copy_in_user(kcontrols, ucontrols, sizeof(*kcontrols)))
665 return -EFAULT;
666 if (ctrl_is_pointer(kcontrols->id)) {
667 void __user *s;
668
669 if (get_user(p, &ucontrols->string))
670 return -EFAULT;
671 s = compat_ptr(p);
672 if (put_user(s, &kcontrols->string))
673 return -EFAULT;
674 }
675 ucontrols++;
676 kcontrols++;
677 }
678 return 0;
679 }
680
681 static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
682 {
683 struct v4l2_ext_control32 __user *ucontrols;
684 struct v4l2_ext_control __user *kcontrols = kp->controls;
685 int n = kp->count;
686 compat_caddr_t p;
687
688 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
689 put_user(kp->ctrl_class, &up->ctrl_class) ||
690 put_user(kp->count, &up->count) ||
691 put_user(kp->error_idx, &up->error_idx) ||
692 copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
693 return -EFAULT;
694 if (!kp->count)
695 return 0;
696
697 if (get_user(p, &up->controls))
698 return -EFAULT;
699 ucontrols = compat_ptr(p);
700 if (!access_ok(VERIFY_WRITE, ucontrols, n * sizeof(struct v4l2_ext_control)))
701 return -EFAULT;
702
703 while (--n >= 0) {
704 unsigned size = sizeof(*ucontrols);
705
706 /* Do not modify the pointer when copying a pointer control.
707 The contents of the pointer was changed, not the pointer
708 itself. */
709 if (ctrl_is_pointer(kcontrols->id))
710 size -= sizeof(ucontrols->value64);
711 if (copy_in_user(ucontrols, kcontrols, size))
712 return -EFAULT;
713 ucontrols++;
714 kcontrols++;
715 }
716 return 0;
717 }
718
719 #define VIDIOC_G_FMT32 _IOWR('V', 4, struct v4l2_format32)
720 #define VIDIOC_S_FMT32 _IOWR('V', 5, struct v4l2_format32)
721 #define VIDIOC_QUERYBUF32 _IOWR('V', 9, struct v4l2_buffer32)
722 #define VIDIOC_G_FBUF32 _IOR ('V', 10, struct v4l2_framebuffer32)
723 #define VIDIOC_S_FBUF32 _IOW ('V', 11, struct v4l2_framebuffer32)
724 #define VIDIOC_QBUF32 _IOWR('V', 15, struct v4l2_buffer32)
725 #define VIDIOC_DQBUF32 _IOWR('V', 17, struct v4l2_buffer32)
726 #define VIDIOC_ENUMSTD32 _IOWR('V', 25, struct v4l2_standard32)
727 #define VIDIOC_ENUMINPUT32 _IOWR('V', 26, struct v4l2_input32)
728 #define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32)
729 #define VIDIOC_G_EXT_CTRLS32 _IOWR('V', 71, struct v4l2_ext_controls32)
730 #define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32)
731 #define VIDIOC_TRY_EXT_CTRLS32 _IOWR('V', 73, struct v4l2_ext_controls32)
732
733 #define VIDIOC_OVERLAY32 _IOW ('V', 14, s32)
734 #ifdef __OLD_VIDIOC_
735 #define VIDIOC_OVERLAY32_OLD _IOWR('V', 14, s32)
736 #endif
737 #define VIDIOC_STREAMON32 _IOW ('V', 18, s32)
738 #define VIDIOC_STREAMOFF32 _IOW ('V', 19, s32)
739 #define VIDIOC_G_INPUT32 _IOR ('V', 38, s32)
740 #define VIDIOC_S_INPUT32 _IOWR('V', 39, s32)
741 #define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32)
742 #define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32)
743
744 static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
745 {
746 union {
747 #ifdef CONFIG_VIDEO_V4L1_COMPAT
748 struct video_tuner vt;
749 struct video_buffer vb;
750 struct video_window vw;
751 struct video_code32 vc;
752 struct video_audio va;
753 #endif
754 struct v4l2_format v2f;
755 struct v4l2_buffer v2b;
756 struct v4l2_framebuffer v2fb;
757 struct v4l2_input v2i;
758 struct v4l2_standard v2s;
759 struct v4l2_ext_controls v2ecs;
760 unsigned long vx;
761 int vi;
762 } karg;
763 void __user *up = compat_ptr(arg);
764 int compatible_arg = 1;
765 long err = 0;
766
767 /* First, convert the command. */
768 switch (cmd) {
769 #ifdef CONFIG_VIDEO_V4L1_COMPAT
770 case VIDIOCGTUNER32: cmd = VIDIOCGTUNER; break;
771 case VIDIOCSTUNER32: cmd = VIDIOCSTUNER; break;
772 case VIDIOCGWIN32: cmd = VIDIOCGWIN; break;
773 case VIDIOCSWIN32: cmd = VIDIOCSWIN; break;
774 case VIDIOCGFBUF32: cmd = VIDIOCGFBUF; break;
775 case VIDIOCSFBUF32: cmd = VIDIOCSFBUF; break;
776 case VIDIOCGFREQ32: cmd = VIDIOCGFREQ; break;
777 case VIDIOCSFREQ32: cmd = VIDIOCSFREQ; break;
778 case VIDIOCSMICROCODE32: cmd = VIDIOCSMICROCODE; break;
779 #endif
780 case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;
781 case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break;
782 case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break;
783 case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break;
784 case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break;
785 case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break;
786 case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break;
787 case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break;
788 case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break;
789 case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break;
790 case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break;
791 case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break;
792 case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break;
793 case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break;
794 #ifdef __OLD_VIDIOC_
795 case VIDIOC_OVERLAY32_OLD: cmd = VIDIOC_OVERLAY; break;
796 #endif
797 case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break;
798 case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break;
799 case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break;
800 case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
801 case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
802 case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
803 }
804
805 switch (cmd) {
806 #ifdef CONFIG_VIDEO_V4L1_COMPAT
807 case VIDIOCSTUNER:
808 case VIDIOCGTUNER:
809 err = get_video_tuner32(&karg.vt, up);
810 compatible_arg = 0;
811 break;
812
813 case VIDIOCSFBUF:
814 err = get_video_buffer32(&karg.vb, up);
815 compatible_arg = 0;
816 break;
817
818 case VIDIOCSWIN:
819 err = get_video_window32(&karg.vw, up);
820 compatible_arg = 0;
821 break;
822
823 case VIDIOCGWIN:
824 case VIDIOCGFBUF:
825 case VIDIOCGFREQ:
826 compatible_arg = 0;
827 break;
828
829 case VIDIOCSMICROCODE:
830 /* Copy the 32-bit "video_code32" to kernel space */
831 if (copy_from_user(&karg.vc, up, sizeof(karg.vc)))
832 return -EFAULT;
833 /* Convert the 32-bit version to a 64-bit version in user space */
834 up = get_microcode32(&karg.vc);
835 break;
836
837 case VIDIOCSFREQ:
838 err = get_user(karg.vx, (u32 __user *)up);
839 compatible_arg = 0;
840 break;
841
842 case VIDIOCCAPTURE:
843 case VIDIOCSYNC:
844 case VIDIOCSWRITEMODE:
845 #endif
846 case VIDIOC_OVERLAY:
847 case VIDIOC_STREAMON:
848 case VIDIOC_STREAMOFF:
849 case VIDIOC_S_INPUT:
850 case VIDIOC_S_OUTPUT:
851 err = get_user(karg.vi, (s32 __user *)up);
852 compatible_arg = 0;
853 break;
854
855 case VIDIOC_G_INPUT:
856 case VIDIOC_G_OUTPUT:
857 compatible_arg = 0;
858 break;
859
860 case VIDIOC_G_FMT:
861 case VIDIOC_S_FMT:
862 case VIDIOC_TRY_FMT:
863 err = get_v4l2_format32(&karg.v2f, up);
864 compatible_arg = 0;
865 break;
866
867 case VIDIOC_QUERYBUF:
868 case VIDIOC_QBUF:
869 case VIDIOC_DQBUF:
870 err = get_v4l2_buffer32(&karg.v2b, up);
871 compatible_arg = 0;
872 break;
873
874 case VIDIOC_S_FBUF:
875 err = get_v4l2_framebuffer32(&karg.v2fb, up);
876 compatible_arg = 0;
877 break;
878
879 case VIDIOC_G_FBUF:
880 compatible_arg = 0;
881 break;
882
883 case VIDIOC_ENUMSTD:
884 err = get_v4l2_standard32(&karg.v2s, up);
885 compatible_arg = 0;
886 break;
887
888 case VIDIOC_ENUMINPUT:
889 err = get_v4l2_input32(&karg.v2i, up);
890 compatible_arg = 0;
891 break;
892
893 case VIDIOC_G_EXT_CTRLS:
894 case VIDIOC_S_EXT_CTRLS:
895 case VIDIOC_TRY_EXT_CTRLS:
896 err = get_v4l2_ext_controls32(&karg.v2ecs, up);
897 compatible_arg = 0;
898 break;
899 }
900 if (err)
901 return err;
902
903 if (compatible_arg)
904 err = native_ioctl(file, cmd, (unsigned long)up);
905 else {
906 mm_segment_t old_fs = get_fs();
907
908 set_fs(KERNEL_DS);
909 err = native_ioctl(file, cmd, (unsigned long)&karg);
910 set_fs(old_fs);
911 }
912
913 /* Special case: even after an error we need to put the
914 results back for these ioctls since the error_idx will
915 contain information on which control failed. */
916 switch (cmd) {
917 case VIDIOC_G_EXT_CTRLS:
918 case VIDIOC_S_EXT_CTRLS:
919 case VIDIOC_TRY_EXT_CTRLS:
920 if (put_v4l2_ext_controls32(&karg.v2ecs, up))
921 err = -EFAULT;
922 break;
923 }
924 if (err)
925 return err;
926
927 switch (cmd) {
928 #ifdef CONFIG_VIDEO_V4L1_COMPAT
929 case VIDIOCGTUNER:
930 err = put_video_tuner32(&karg.vt, up);
931 break;
932
933 case VIDIOCGWIN:
934 err = put_video_window32(&karg.vw, up);
935 break;
936
937 case VIDIOCGFBUF:
938 err = put_video_buffer32(&karg.vb, up);
939 break;
940
941 case VIDIOCGFREQ:
942 err = put_user(((u32)karg.vx), (u32 __user *)up);
943 break;
944 #endif
945 case VIDIOC_S_INPUT:
946 case VIDIOC_S_OUTPUT:
947 case VIDIOC_G_INPUT:
948 case VIDIOC_G_OUTPUT:
949 err = put_user(((s32)karg.vi), (s32 __user *)up);
950 break;
951
952 case VIDIOC_G_FBUF:
953 err = put_v4l2_framebuffer32(&karg.v2fb, up);
954 break;
955
956 case VIDIOC_G_FMT:
957 case VIDIOC_S_FMT:
958 case VIDIOC_TRY_FMT:
959 err = put_v4l2_format32(&karg.v2f, up);
960 break;
961
962 case VIDIOC_QUERYBUF:
963 case VIDIOC_QBUF:
964 case VIDIOC_DQBUF:
965 err = put_v4l2_buffer32(&karg.v2b, up);
966 break;
967
968 case VIDIOC_ENUMSTD:
969 err = put_v4l2_standard32(&karg.v2s, up);
970 break;
971
972 case VIDIOC_ENUMINPUT:
973 err = put_v4l2_input32(&karg.v2i, up);
974 break;
975 }
976 return err;
977 }
978
979 long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
980 {
981 long ret = -ENOIOCTLCMD;
982
983 if (!file->f_op->ioctl && !file->f_op->unlocked_ioctl)
984 return ret;
985
986 switch (cmd) {
987 #ifdef CONFIG_VIDEO_V4L1_COMPAT
988 case VIDIOCGCAP:
989 case VIDIOCGCHAN:
990 case VIDIOCSCHAN:
991 case VIDIOCGTUNER32:
992 case VIDIOCSTUNER32:
993 case VIDIOCGPICT:
994 case VIDIOCSPICT:
995 case VIDIOCCAPTURE32:
996 case VIDIOCGWIN32:
997 case VIDIOCSWIN32:
998 case VIDIOCGFBUF32:
999 case VIDIOCSFBUF32:
1000 case VIDIOCKEY:
1001 case VIDIOCGFREQ32:
1002 case VIDIOCSFREQ32:
1003 case VIDIOCGAUDIO:
1004 case VIDIOCSAUDIO:
1005 case VIDIOCSYNC32:
1006 case VIDIOCMCAPTURE:
1007 case VIDIOCGMBUF:
1008 case VIDIOCGUNIT:
1009 case VIDIOCGCAPTURE:
1010 case VIDIOCSCAPTURE:
1011 case VIDIOCSPLAYMODE:
1012 case VIDIOCSWRITEMODE32:
1013 case VIDIOCGPLAYINFO:
1014 case VIDIOCSMICROCODE32:
1015 case VIDIOCGVBIFMT:
1016 case VIDIOCSVBIFMT:
1017 #endif
1018 #ifdef __OLD_VIDIOC_
1019 case VIDIOC_OVERLAY32_OLD:
1020 case VIDIOC_S_PARM_OLD:
1021 case VIDIOC_S_CTRL_OLD:
1022 case VIDIOC_G_AUDIO_OLD:
1023 case VIDIOC_G_AUDOUT_OLD:
1024 case VIDIOC_CROPCAP_OLD:
1025 #endif
1026 case VIDIOC_QUERYCAP:
1027 case VIDIOC_RESERVED:
1028 case VIDIOC_ENUM_FMT:
1029 case VIDIOC_G_FMT32:
1030 case VIDIOC_S_FMT32:
1031 case VIDIOC_REQBUFS:
1032 case VIDIOC_QUERYBUF32:
1033 case VIDIOC_G_FBUF32:
1034 case VIDIOC_S_FBUF32:
1035 case VIDIOC_OVERLAY32:
1036 case VIDIOC_QBUF32:
1037 case VIDIOC_DQBUF32:
1038 case VIDIOC_STREAMON32:
1039 case VIDIOC_STREAMOFF32:
1040 case VIDIOC_G_PARM:
1041 case VIDIOC_S_PARM:
1042 case VIDIOC_G_STD:
1043 case VIDIOC_S_STD:
1044 case VIDIOC_ENUMSTD32:
1045 case VIDIOC_ENUMINPUT32:
1046 case VIDIOC_G_CTRL:
1047 case VIDIOC_S_CTRL:
1048 case VIDIOC_G_TUNER:
1049 case VIDIOC_S_TUNER:
1050 case VIDIOC_G_AUDIO:
1051 case VIDIOC_S_AUDIO:
1052 case VIDIOC_QUERYCTRL:
1053 case VIDIOC_QUERYMENU:
1054 case VIDIOC_G_INPUT32:
1055 case VIDIOC_S_INPUT32:
1056 case VIDIOC_G_OUTPUT32:
1057 case VIDIOC_S_OUTPUT32:
1058 case VIDIOC_ENUMOUTPUT:
1059 case VIDIOC_G_AUDOUT:
1060 case VIDIOC_S_AUDOUT:
1061 case VIDIOC_G_MODULATOR:
1062 case VIDIOC_S_MODULATOR:
1063 case VIDIOC_S_FREQUENCY:
1064 case VIDIOC_G_FREQUENCY:
1065 case VIDIOC_CROPCAP:
1066 case VIDIOC_G_CROP:
1067 case VIDIOC_S_CROP:
1068 case VIDIOC_G_JPEGCOMP:
1069 case VIDIOC_S_JPEGCOMP:
1070 case VIDIOC_QUERYSTD:
1071 case VIDIOC_TRY_FMT32:
1072 case VIDIOC_ENUMAUDIO:
1073 case VIDIOC_ENUMAUDOUT:
1074 case VIDIOC_G_PRIORITY:
1075 case VIDIOC_S_PRIORITY:
1076 case VIDIOC_G_SLICED_VBI_CAP:
1077 case VIDIOC_LOG_STATUS:
1078 case VIDIOC_G_EXT_CTRLS32:
1079 case VIDIOC_S_EXT_CTRLS32:
1080 case VIDIOC_TRY_EXT_CTRLS32:
1081 case VIDIOC_ENUM_FRAMESIZES:
1082 case VIDIOC_ENUM_FRAMEINTERVALS:
1083 case VIDIOC_G_ENC_INDEX:
1084 case VIDIOC_ENCODER_CMD:
1085 case VIDIOC_TRY_ENCODER_CMD:
1086 case VIDIOC_DBG_S_REGISTER:
1087 case VIDIOC_DBG_G_REGISTER:
1088 case VIDIOC_DBG_G_CHIP_IDENT:
1089 case VIDIOC_S_HW_FREQ_SEEK:
1090 ret = do_video_ioctl(file, cmd, arg);
1091 break;
1092
1093 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1094 /* BTTV specific... */
1095 case _IOW('v', BASE_VIDIOCPRIVATE+0, char [256]):
1096 case _IOR('v', BASE_VIDIOCPRIVATE+1, char [256]):
1097 case _IOR('v' , BASE_VIDIOCPRIVATE+2, unsigned int):
1098 case _IOW('v' , BASE_VIDIOCPRIVATE+3, char [16]): /* struct bttv_pll_info */
1099 case _IOR('v' , BASE_VIDIOCPRIVATE+4, int):
1100 case _IOR('v' , BASE_VIDIOCPRIVATE+5, int):
1101 case _IOR('v' , BASE_VIDIOCPRIVATE+6, int):
1102 case _IOR('v' , BASE_VIDIOCPRIVATE+7, int):
1103 ret = native_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
1104 break;
1105 #endif
1106 default:
1107 printk(KERN_WARNING "compat_ioctl32: "
1108 "unknown ioctl '%c', dir=%d, #%d (0x%08x)\n",
1109 _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), cmd);
1110 break;
1111 }
1112 return ret;
1113 }
1114 EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32);
1115 #endif
1116
1117 MODULE_LICENSE("GPL");
Linux MOXA ART SoC ARM port