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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / media / video / v4l2-compat-ioctl32.c
blobf77f84bfe714be85b4c372cb010a1a37f4213de9
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(kp->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 if (get_user(kp->length, &up->length) ||
479 get_user(kp->m.offset, &up->m.offset))
480 return -EFAULT;
481 break;
482 case V4L2_MEMORY_USERPTR:
483 {
484 compat_long_t tmp;
485
486 if (get_user(kp->length, &up->length) ||
487 get_user(tmp, &up->m.userptr))
488 return -EFAULT;
489
490 kp->m.userptr = (unsigned long)compat_ptr(tmp);
491 }
492 break;
493 case V4L2_MEMORY_OVERLAY:
494 if (get_user(kp->m.offset, &up->m.offset))
495 return -EFAULT;
496 break;
497 }
498 return 0;
499 }
500
501 static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
502 {
503 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
504 put_user(kp->index, &up->index) ||
505 put_user(kp->type, &up->type) ||
506 put_user(kp->flags, &up->flags) ||
507 put_user(kp->memory, &up->memory) ||
508 put_user(kp->input, &up->input))
509 return -EFAULT;
510 switch (kp->memory) {
511 case V4L2_MEMORY_MMAP:
512 if (put_user(kp->length, &up->length) ||
513 put_user(kp->m.offset, &up->m.offset))
514 return -EFAULT;
515 break;
516 case V4L2_MEMORY_USERPTR:
517 if (put_user(kp->length, &up->length) ||
518 put_user(kp->m.userptr, &up->m.userptr))
519 return -EFAULT;
520 break;
521 case V4L2_MEMORY_OVERLAY:
522 if (put_user(kp->m.offset, &up->m.offset))
523 return -EFAULT;
524 break;
525 }
526 if (put_user(kp->bytesused, &up->bytesused) ||
527 put_user(kp->field, &up->field) ||
528 put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
529 put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
530 copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
531 put_user(kp->sequence, &up->sequence) ||
532 put_user(kp->reserved, &up->reserved))
533 return -EFAULT;
534 return 0;
535 }
536
537 struct v4l2_framebuffer32 {
538 __u32 capability;
539 __u32 flags;
540 compat_caddr_t base;
541 struct v4l2_pix_format fmt;
542 };
543
544 static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
545 {
546 u32 tmp;
547
548 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
549 get_user(tmp, &up->base) ||
550 get_user(kp->capability, &up->capability) ||
551 get_user(kp->flags, &up->flags))
552 return -EFAULT;
553 kp->base = compat_ptr(tmp);
554 get_v4l2_pix_format(&kp->fmt, &up->fmt);
555 return 0;
556 }
557
558 static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
559 {
560 u32 tmp = (u32)((unsigned long)kp->base);
561
562 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
563 put_user(tmp, &up->base) ||
564 put_user(kp->capability, &up->capability) ||
565 put_user(kp->flags, &up->flags))
566 return -EFAULT;
567 put_v4l2_pix_format(&kp->fmt, &up->fmt);
568 return 0;
569 }
570
571 struct v4l2_input32 {
572 __u32 index; /* Which input */
573 __u8 name[32]; /* Label */
574 __u32 type; /* Type of input */
575 __u32 audioset; /* Associated audios (bitfield) */
576 __u32 tuner; /* Associated tuner */
577 v4l2_std_id std;
578 __u32 status;
579 __u32 reserved[4];
580 } __attribute__ ((packed));
581
582 /* The 64-bit v4l2_input struct has extra padding at the end of the struct.
583 Otherwise it is identical to the 32-bit version. */
584 static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
585 {
586 if (copy_from_user(kp, up, sizeof(struct v4l2_input32)))
587 return -EFAULT;
588 return 0;
589 }
590
591 static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
592 {
593 if (copy_to_user(up, kp, sizeof(struct v4l2_input32)))
594 return -EFAULT;
595 return 0;
596 }
597
598 struct v4l2_ext_controls32 {
599 __u32 ctrl_class;
600 __u32 count;
601 __u32 error_idx;
602 __u32 reserved[2];
603 compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
604 };
605
606 struct v4l2_ext_control32 {
607 __u32 id;
608 __u32 size;
609 __u32 reserved2[1];
610 union {
611 __s32 value;
612 __s64 value64;
613 compat_caddr_t string; /* actually char * */
614 };
615 } __attribute__ ((packed));
616
617 /* The following function really belong in v4l2-common, but that causes
618 a circular dependency between modules. We need to think about this, but
619 for now this will do. */
620
621 /* Return non-zero if this control is a pointer type. Currently only
622 type STRING is a pointer type. */
623 static inline int ctrl_is_pointer(u32 id)
624 {
625 switch (id) {
626 case V4L2_CID_RDS_TX_PS_NAME:
627 case V4L2_CID_RDS_TX_RADIO_TEXT:
628 return 1;
629 default:
630 return 0;
631 }
632 }
633
634 static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
635 {
636 struct v4l2_ext_control32 __user *ucontrols;
637 struct v4l2_ext_control __user *kcontrols;
638 int n;
639 compat_caddr_t p;
640
641 if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
642 get_user(kp->ctrl_class, &up->ctrl_class) ||
643 get_user(kp->count, &up->count) ||
644 get_user(kp->error_idx, &up->error_idx) ||
645 copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
646 return -EFAULT;
647 n = kp->count;
648 if (n == 0) {
649 kp->controls = NULL;
650 return 0;
651 }
652 if (get_user(p, &up->controls))
653 return -EFAULT;
654 ucontrols = compat_ptr(p);
655 if (!access_ok(VERIFY_READ, ucontrols, n * sizeof(struct v4l2_ext_control)))
656 return -EFAULT;
657 kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
658 kp->controls = kcontrols;
659 while (--n >= 0) {
660 if (copy_in_user(kcontrols, ucontrols, sizeof(*kcontrols)))
661 return -EFAULT;
662 if (ctrl_is_pointer(kcontrols->id)) {
663 void __user *s;
664
665 if (get_user(p, &ucontrols->string))
666 return -EFAULT;
667 s = compat_ptr(p);
668 if (put_user(s, &kcontrols->string))
669 return -EFAULT;
670 }
671 ucontrols++;
672 kcontrols++;
673 }
674 return 0;
675 }
676
677 static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
678 {
679 struct v4l2_ext_control32 __user *ucontrols;
680 struct v4l2_ext_control __user *kcontrols = kp->controls;
681 int n = kp->count;
682 compat_caddr_t p;
683
684 if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
685 put_user(kp->ctrl_class, &up->ctrl_class) ||
686 put_user(kp->count, &up->count) ||
687 put_user(kp->error_idx, &up->error_idx) ||
688 copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
689 return -EFAULT;
690 if (!kp->count)
691 return 0;
692
693 if (get_user(p, &up->controls))
694 return -EFAULT;
695 ucontrols = compat_ptr(p);
696 if (!access_ok(VERIFY_WRITE, ucontrols, n * sizeof(struct v4l2_ext_control)))
697 return -EFAULT;
698
699 while (--n >= 0) {
700 unsigned size = sizeof(*ucontrols);
701
702 /* Do not modify the pointer when copying a pointer control.
703 The contents of the pointer was changed, not the pointer
704 itself. */
705 if (ctrl_is_pointer(kcontrols->id))
706 size -= sizeof(ucontrols->value64);
707 if (copy_in_user(ucontrols, kcontrols, size))
708 return -EFAULT;
709 ucontrols++;
710 kcontrols++;
711 }
712 return 0;
713 }
714
715 #define VIDIOC_G_FMT32 _IOWR('V', 4, struct v4l2_format32)
716 #define VIDIOC_S_FMT32 _IOWR('V', 5, struct v4l2_format32)
717 #define VIDIOC_QUERYBUF32 _IOWR('V', 9, struct v4l2_buffer32)
718 #define VIDIOC_G_FBUF32 _IOR ('V', 10, struct v4l2_framebuffer32)
719 #define VIDIOC_S_FBUF32 _IOW ('V', 11, struct v4l2_framebuffer32)
720 #define VIDIOC_QBUF32 _IOWR('V', 15, struct v4l2_buffer32)
721 #define VIDIOC_DQBUF32 _IOWR('V', 17, struct v4l2_buffer32)
722 #define VIDIOC_ENUMSTD32 _IOWR('V', 25, struct v4l2_standard32)
723 #define VIDIOC_ENUMINPUT32 _IOWR('V', 26, struct v4l2_input32)
724 #define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32)
725 #define VIDIOC_G_EXT_CTRLS32 _IOWR('V', 71, struct v4l2_ext_controls32)
726 #define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32)
727 #define VIDIOC_TRY_EXT_CTRLS32 _IOWR('V', 73, struct v4l2_ext_controls32)
728
729 #define VIDIOC_OVERLAY32 _IOW ('V', 14, s32)
730 #ifdef __OLD_VIDIOC_
731 #define VIDIOC_OVERLAY32_OLD _IOWR('V', 14, s32)
732 #endif
733 #define VIDIOC_STREAMON32 _IOW ('V', 18, s32)
734 #define VIDIOC_STREAMOFF32 _IOW ('V', 19, s32)
735 #define VIDIOC_G_INPUT32 _IOR ('V', 38, s32)
736 #define VIDIOC_S_INPUT32 _IOWR('V', 39, s32)
737 #define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32)
738 #define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32)
739
740 static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
741 {
742 union {
743 #ifdef CONFIG_VIDEO_V4L1_COMPAT
744 struct video_tuner vt;
745 struct video_buffer vb;
746 struct video_window vw;
747 struct video_code vc;
748 struct video_audio va;
749 #endif
750 struct v4l2_format v2f;
751 struct v4l2_buffer v2b;
752 struct v4l2_framebuffer v2fb;
753 struct v4l2_input v2i;
754 struct v4l2_standard v2s;
755 struct v4l2_ext_controls v2ecs;
756 unsigned long vx;
757 int vi;
758 } karg;
759 void __user *up = compat_ptr(arg);
760 int compatible_arg = 1;
761 long err = 0;
762
763 /* First, convert the command. */
764 switch (cmd) {
765 #ifdef CONFIG_VIDEO_V4L1_COMPAT
766 case VIDIOCGTUNER32: cmd = VIDIOCGTUNER; break;
767 case VIDIOCSTUNER32: cmd = VIDIOCSTUNER; break;
768 case VIDIOCGWIN32: cmd = VIDIOCGWIN; break;
769 case VIDIOCSWIN32: cmd = VIDIOCSWIN; break;
770 case VIDIOCGFBUF32: cmd = VIDIOCGFBUF; break;
771 case VIDIOCSFBUF32: cmd = VIDIOCSFBUF; break;
772 case VIDIOCGFREQ32: cmd = VIDIOCGFREQ; break;
773 case VIDIOCSFREQ32: cmd = VIDIOCSFREQ; break;
774 case VIDIOCSMICROCODE32: cmd = VIDIOCSMICROCODE; break;
775 #endif
776 case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;
777 case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break;
778 case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break;
779 case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break;
780 case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break;
781 case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break;
782 case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break;
783 case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break;
784 case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break;
785 case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break;
786 case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break;
787 case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break;
788 case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break;
789 case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break;
790 #ifdef __OLD_VIDIOC_
791 case VIDIOC_OVERLAY32_OLD: cmd = VIDIOC_OVERLAY; break;
792 #endif
793 case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break;
794 case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break;
795 case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break;
796 case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
797 case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
798 case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
799 }
800
801 switch (cmd) {
802 #ifdef CONFIG_VIDEO_V4L1_COMPAT
803 case VIDIOCSTUNER:
804 case VIDIOCGTUNER:
805 err = get_video_tuner32(&karg.vt, up);
806 compatible_arg = 0;
807 break;
808
809 case VIDIOCSFBUF:
810 err = get_video_buffer32(&karg.vb, up);
811 compatible_arg = 0;
812 break;
813
814 case VIDIOCSWIN:
815 err = get_video_window32(&karg.vw, up);
816 compatible_arg = 0;
817 break;
818
819 case VIDIOCGWIN:
820 case VIDIOCGFBUF:
821 case VIDIOCGFREQ:
822 compatible_arg = 0;
823 break;
824
825 case VIDIOCSMICROCODE:
826 err = get_microcode32(&karg.vc, up);
827 compatible_arg = 0;
828 break;
829
830 case VIDIOCSFREQ:
831 err = get_user(karg.vx, (u32 __user *)up);
832 compatible_arg = 0;
833 break;
834
835 case VIDIOCCAPTURE:
836 case VIDIOCSYNC:
837 case VIDIOCSWRITEMODE:
838 #endif
839 case VIDIOC_OVERLAY:
840 case VIDIOC_STREAMON:
841 case VIDIOC_STREAMOFF:
842 case VIDIOC_S_INPUT:
843 case VIDIOC_S_OUTPUT:
844 err = get_user(karg.vi, (s32 __user *)up);
845 compatible_arg = 0;
846 break;
847
848 case VIDIOC_G_INPUT:
849 case VIDIOC_G_OUTPUT:
850 compatible_arg = 0;
851 break;
852
853 case VIDIOC_G_FMT:
854 case VIDIOC_S_FMT:
855 case VIDIOC_TRY_FMT:
856 err = get_v4l2_format32(&karg.v2f, up);
857 compatible_arg = 0;
858 break;
859
860 case VIDIOC_QUERYBUF:
861 case VIDIOC_QBUF:
862 case VIDIOC_DQBUF:
863 err = get_v4l2_buffer32(&karg.v2b, up);
864 compatible_arg = 0;
865 break;
866
867 case VIDIOC_S_FBUF:
868 err = get_v4l2_framebuffer32(&karg.v2fb, up);
869 compatible_arg = 0;
870 break;
871
872 case VIDIOC_G_FBUF:
873 compatible_arg = 0;
874 break;
875
876 case VIDIOC_ENUMSTD:
877 err = get_v4l2_standard32(&karg.v2s, up);
878 compatible_arg = 0;
879 break;
880
881 case VIDIOC_ENUMINPUT:
882 err = get_v4l2_input32(&karg.v2i, up);
883 compatible_arg = 0;
884 break;
885
886 case VIDIOC_G_EXT_CTRLS:
887 case VIDIOC_S_EXT_CTRLS:
888 case VIDIOC_TRY_EXT_CTRLS:
889 err = get_v4l2_ext_controls32(&karg.v2ecs, up);
890 compatible_arg = 0;
891 break;
892 }
893 if (err)
894 return err;
895
896 if (compatible_arg)
897 err = native_ioctl(file, cmd, (unsigned long)up);
898 else {
899 mm_segment_t old_fs = get_fs();
900
901 set_fs(KERNEL_DS);
902 err = native_ioctl(file, cmd, (unsigned long)&karg);
903 set_fs(old_fs);
904 }
905
906 /* Special case: even after an error we need to put the
907 results back for these ioctls since the error_idx will
908 contain information on which control failed. */
909 switch (cmd) {
910 case VIDIOC_G_EXT_CTRLS:
911 case VIDIOC_S_EXT_CTRLS:
912 case VIDIOC_TRY_EXT_CTRLS:
913 if (put_v4l2_ext_controls32(&karg.v2ecs, up))
914 err = -EFAULT;
915 break;
916 }
917 if (err)
918 return err;
919
920 switch (cmd) {
921 #ifdef CONFIG_VIDEO_V4L1_COMPAT
922 case VIDIOCGTUNER:
923 err = put_video_tuner32(&karg.vt, up);
924 break;
925
926 case VIDIOCGWIN:
927 err = put_video_window32(&karg.vw, up);
928 break;
929
930 case VIDIOCGFBUF:
931 err = put_video_buffer32(&karg.vb, up);
932 break;
933
934 case VIDIOCGFREQ:
935 err = put_user(((u32)karg.vx), (u32 __user *)up);
936 break;
937 #endif
938 case VIDIOC_S_INPUT:
939 case VIDIOC_S_OUTPUT:
940 case VIDIOC_G_INPUT:
941 case VIDIOC_G_OUTPUT:
942 err = put_user(((s32)karg.vi), (s32 __user *)up);
943 break;
944
945 case VIDIOC_G_FBUF:
946 err = put_v4l2_framebuffer32(&karg.v2fb, up);
947 break;
948
949 case VIDIOC_G_FMT:
950 case VIDIOC_S_FMT:
951 case VIDIOC_TRY_FMT:
952 err = put_v4l2_format32(&karg.v2f, up);
953 break;
954
955 case VIDIOC_QUERYBUF:
956 case VIDIOC_QBUF:
957 case VIDIOC_DQBUF:
958 err = put_v4l2_buffer32(&karg.v2b, up);
959 break;
960
961 case VIDIOC_ENUMSTD:
962 err = put_v4l2_standard32(&karg.v2s, up);
963 break;
964
965 case VIDIOC_ENUMINPUT:
966 err = put_v4l2_input32(&karg.v2i, up);
967 break;
968 }
969 return err;
970 }
971
972 long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
973 {
974 long ret = -ENOIOCTLCMD;
975
976 if (!file->f_op->ioctl && !file->f_op->unlocked_ioctl)
977 return ret;
978
979 switch (cmd) {
980 #ifdef CONFIG_VIDEO_V4L1_COMPAT
981 case VIDIOCGCAP:
982 case VIDIOCGCHAN:
983 case VIDIOCSCHAN:
984 case VIDIOCGTUNER32:
985 case VIDIOCSTUNER32:
986 case VIDIOCGPICT:
987 case VIDIOCSPICT:
988 case VIDIOCCAPTURE32:
989 case VIDIOCGWIN32:
990 case VIDIOCSWIN32:
991 case VIDIOCGFBUF32:
992 case VIDIOCSFBUF32:
993 case VIDIOCKEY:
994 case VIDIOCGFREQ32:
995 case VIDIOCSFREQ32:
996 case VIDIOCGAUDIO:
997 case VIDIOCSAUDIO:
998 case VIDIOCSYNC32:
999 case VIDIOCMCAPTURE:
1000 case VIDIOCGMBUF:
1001 case VIDIOCGUNIT:
1002 case VIDIOCGCAPTURE:
1003 case VIDIOCSCAPTURE:
1004 case VIDIOCSPLAYMODE:
1005 case VIDIOCSWRITEMODE32:
1006 case VIDIOCGPLAYINFO:
1007 case VIDIOCSMICROCODE32:
1008 case VIDIOCGVBIFMT:
1009 case VIDIOCSVBIFMT:
1010 #endif
1011 #ifdef __OLD_VIDIOC_
1012 case VIDIOC_OVERLAY32_OLD:
1013 case VIDIOC_S_PARM_OLD:
1014 case VIDIOC_S_CTRL_OLD:
1015 case VIDIOC_G_AUDIO_OLD:
1016 case VIDIOC_G_AUDOUT_OLD:
1017 case VIDIOC_CROPCAP_OLD:
1018 #endif
1019 case VIDIOC_QUERYCAP:
1020 case VIDIOC_RESERVED:
1021 case VIDIOC_ENUM_FMT:
1022 case VIDIOC_G_FMT32:
1023 case VIDIOC_S_FMT32:
1024 case VIDIOC_REQBUFS:
1025 case VIDIOC_QUERYBUF32:
1026 case VIDIOC_G_FBUF32:
1027 case VIDIOC_S_FBUF32:
1028 case VIDIOC_OVERLAY32:
1029 case VIDIOC_QBUF32:
1030 case VIDIOC_DQBUF32:
1031 case VIDIOC_STREAMON32:
1032 case VIDIOC_STREAMOFF32:
1033 case VIDIOC_G_PARM:
1034 case VIDIOC_S_PARM:
1035 case VIDIOC_G_STD:
1036 case VIDIOC_S_STD:
1037 case VIDIOC_ENUMSTD32:
1038 case VIDIOC_ENUMINPUT32:
1039 case VIDIOC_G_CTRL:
1040 case VIDIOC_S_CTRL:
1041 case VIDIOC_G_TUNER:
1042 case VIDIOC_S_TUNER:
1043 case VIDIOC_G_AUDIO:
1044 case VIDIOC_S_AUDIO:
1045 case VIDIOC_QUERYCTRL:
1046 case VIDIOC_QUERYMENU:
1047 case VIDIOC_G_INPUT32:
1048 case VIDIOC_S_INPUT32:
1049 case VIDIOC_G_OUTPUT32:
1050 case VIDIOC_S_OUTPUT32:
1051 case VIDIOC_ENUMOUTPUT:
1052 case VIDIOC_G_AUDOUT:
1053 case VIDIOC_S_AUDOUT:
1054 case VIDIOC_G_MODULATOR:
1055 case VIDIOC_S_MODULATOR:
1056 case VIDIOC_S_FREQUENCY:
1057 case VIDIOC_G_FREQUENCY:
1058 case VIDIOC_CROPCAP:
1059 case VIDIOC_G_CROP:
1060 case VIDIOC_S_CROP:
1061 case VIDIOC_G_JPEGCOMP:
1062 case VIDIOC_S_JPEGCOMP:
1063 case VIDIOC_QUERYSTD:
1064 case VIDIOC_TRY_FMT32:
1065 case VIDIOC_ENUMAUDIO:
1066 case VIDIOC_ENUMAUDOUT:
1067 case VIDIOC_G_PRIORITY:
1068 case VIDIOC_S_PRIORITY:
1069 case VIDIOC_G_SLICED_VBI_CAP:
1070 case VIDIOC_LOG_STATUS:
1071 case VIDIOC_G_EXT_CTRLS32:
1072 case VIDIOC_S_EXT_CTRLS32:
1073 case VIDIOC_TRY_EXT_CTRLS32:
1074 case VIDIOC_ENUM_FRAMESIZES:
1075 case VIDIOC_ENUM_FRAMEINTERVALS:
1076 case VIDIOC_G_ENC_INDEX:
1077 case VIDIOC_ENCODER_CMD:
1078 case VIDIOC_TRY_ENCODER_CMD:
1079 case VIDIOC_DBG_S_REGISTER:
1080 case VIDIOC_DBG_G_REGISTER:
1081 case VIDIOC_DBG_G_CHIP_IDENT:
1082 case VIDIOC_S_HW_FREQ_SEEK:
1083 case VIDIOC_ENUM_DV_PRESETS:
1084 case VIDIOC_S_DV_PRESET:
1085 case VIDIOC_G_DV_PRESET:
1086 case VIDIOC_QUERY_DV_PRESET:
1087 case VIDIOC_S_DV_TIMINGS:
1088 case VIDIOC_G_DV_TIMINGS:
1089 ret = do_video_ioctl(file, cmd, arg);
1090 break;
1091
1092 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1093 /* BTTV specific... */
1094 case _IOW('v', BASE_VIDIOCPRIVATE+0, char [256]):
1095 case _IOR('v', BASE_VIDIOCPRIVATE+1, char [256]):
1096 case _IOR('v' , BASE_VIDIOCPRIVATE+2, unsigned int):
1097 case _IOW('v' , BASE_VIDIOCPRIVATE+3, char [16]): /* struct bttv_pll_info */
1098 case _IOR('v' , BASE_VIDIOCPRIVATE+4, int):
1099 case _IOR('v' , BASE_VIDIOCPRIVATE+5, int):
1100 case _IOR('v' , BASE_VIDIOCPRIVATE+6, int):
1101 case _IOR('v' , BASE_VIDIOCPRIVATE+7, int):
1102 ret = native_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
1103 break;
1104 #endif
1105 default:
1106 printk(KERN_WARNING "compat_ioctl32: "
1107 "unknown ioctl '%c', dir=%d, #%d (0x%08x)\n",
1108 _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), cmd);
1109 break;
1110 }
1111 return ret;
1112 }
1113 EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32);
1114 #endif
1115
1116 MODULE_LICENSE("GPL");