1 /*
2 * Copyright (c) 2014 Philippe De Muyter <phdm@macqel.be>
3 * Copyright (c) 2014 William Manley <will@williammanley.net>
4 * Copyright (c) 2011 Peter Zotov <whitequark@whitequark.org>
5 * Copyright (c) 2014-2018 The strace developers.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "defs.h"
32
33 #include <stdint.h>
34 #include <linux/ioctl.h>
35 #include <linux/types.h>
36 #include <linux/videodev2.h>
37
38 #include DEF_MPERS_TYPE(struct_v4l2_buffer)
39 #include DEF_MPERS_TYPE(struct_v4l2_clip)
40 #ifdef VIDIOC_CREATE_BUFS
41 # include DEF_MPERS_TYPE(struct_v4l2_create_buffers)
42 #endif
43 #include DEF_MPERS_TYPE(struct_v4l2_ext_control)
44 #include DEF_MPERS_TYPE(struct_v4l2_ext_controls)
45 #include DEF_MPERS_TYPE(struct_v4l2_format)
46 #include DEF_MPERS_TYPE(struct_v4l2_framebuffer)
47 #include DEF_MPERS_TYPE(struct_v4l2_input)
48 #include DEF_MPERS_TYPE(struct_v4l2_standard)
49
50 typedef struct v4l2_buffer struct_v4l2_buffer;
51 typedef struct v4l2_clip struct_v4l2_clip;
52 #ifdef VIDIOC_CREATE_BUFS
53 typedef struct v4l2_create_buffers struct_v4l2_create_buffers;
54 #endif
55 typedef struct v4l2_ext_control struct_v4l2_ext_control;
56 typedef struct v4l2_ext_controls struct_v4l2_ext_controls;
57 typedef struct v4l2_format struct_v4l2_format;
58 typedef struct v4l2_framebuffer struct_v4l2_framebuffer;
59 typedef struct v4l2_input struct_v4l2_input;
60 typedef struct v4l2_standard struct_v4l2_standard;
61
62 #include MPERS_DEFS
63
64 #include "print_fields.h"
65 #include "xstring.h"
66
67 /* some historical constants */
68 #ifndef V4L2_CID_HCENTER
69 #define V4L2_CID_HCENTER (V4L2_CID_BASE+22)
70 #endif
71 #ifndef V4L2_CID_VCENTER
72 #define V4L2_CID_VCENTER (V4L2_CID_BASE+23)
73 #endif
74 #ifndef V4L2_CID_BAND_STOP_FILTER
75 #define V4L2_CID_BAND_STOP_FILTER (V4L2_CID_BASE+33)
76 #endif
77
78 #define FMT_FRACT "%u/%u"
79 #define ARGS_FRACT(x) ((x).numerator), ((x).denominator)
80
81 #define FMT_RECT "{left=%d, top=%d, width=%u, height=%u}"
82 #define ARGS_RECT(x) (x).left, (x).top, (x).width, (x).height
83
84 static void
print_pixelformat(uint32_t fourcc)85 print_pixelformat(uint32_t fourcc)
86 {
87 const union {
88 uint32_t pixelformat;
89 unsigned char cc[sizeof(uint32_t)];
90 } u = {
91 #if WORDS_BIGENDIAN
92 .cc = {
93 (unsigned char) (fourcc >> 24),
94 (unsigned char) (fourcc >> 16),
95 (unsigned char) (fourcc >> 8),
96 (unsigned char) fourcc
97 }
98 #else
99 .pixelformat = fourcc
100 #endif
101 };
102 unsigned int i;
103
104 tprints("v4l2_fourcc(");
105 for (i = 0; i < sizeof(u.cc); ++i) {
106 unsigned char c = u.cc[i];
107
108 if (i)
109 tprints(", ");
110 if (c == '\'' || c == '\\') {
111 char sym[] = {
112 '\'',
113 '\\',
114 c,
115 '\'',
116 '\0'
117 };
118 tprints(sym);
119 } else if (c >= ' ' && c <= 0x7e) {
120 char sym[] = {
121 '\'',
122 c,
123 '\'',
124 '\0'
125 };
126 tprints(sym);
127 } else {
128 char hex[] = {
129 '\'',
130 '\\',
131 'x',
132 "0123456789abcdef"[c >> 4],
133 "0123456789abcdef"[c & 0xf],
134 '\'',
135 '\0'
136 };
137 tprints(hex);
138 }
139 }
140 tprints(")");
141 }
142
143 #include "xlat/v4l2_device_capabilities_flags.h"
144
145 static int
print_v4l2_capability(struct tcb * const tcp,const kernel_ulong_t arg)146 print_v4l2_capability(struct tcb *const tcp, const kernel_ulong_t arg)
147 {
148 struct v4l2_capability caps;
149
150 if (entering(tcp))
151 return 0;
152 tprints(", ");
153 if (umove_or_printaddr(tcp, arg, &caps))
154 return RVAL_IOCTL_DECODED;
155 PRINT_FIELD_CSTRING("{", caps, driver);
156 PRINT_FIELD_CSTRING(", ", caps, card);
157 PRINT_FIELD_CSTRING(", ", caps, bus_info);
158 tprintf(", version=%u.%u.%u, capabilities=",
159 (caps.version >> 16) & 0xFF,
160 (caps.version >> 8) & 0xFF,
161 caps.version & 0xFF);
162 printflags(v4l2_device_capabilities_flags, caps.capabilities,
163 "V4L2_CAP_???");
164 #ifdef V4L2_CAP_DEVICE_CAPS
165 tprints(", device_caps=");
166 printflags(v4l2_device_capabilities_flags, caps.device_caps,
167 "V4L2_CAP_???");
168 #endif
169 tprints("}");
170 return RVAL_IOCTL_DECODED;
171 }
172
173 #include "xlat/v4l2_buf_types.h"
174 #include "xlat/v4l2_format_description_flags.h"
175
176 static int
print_v4l2_fmtdesc(struct tcb * const tcp,const kernel_ulong_t arg)177 print_v4l2_fmtdesc(struct tcb *const tcp, const kernel_ulong_t arg)
178 {
179 struct v4l2_fmtdesc f;
180
181 if (entering(tcp)) {
182 tprints(", ");
183 if (umove_or_printaddr(tcp, arg, &f))
184 return RVAL_IOCTL_DECODED;
185 tprintf("{index=%u, type=", f.index);
186 printxval(v4l2_buf_types, f.type, "V4L2_BUF_TYPE_???");
187 return 0;
188 }
189
190 if (!syserror(tcp) && !umove(tcp, arg, &f)) {
191 tprints(", flags=");
192 printflags(v4l2_format_description_flags, f.flags,
193 "V4L2_FMT_FLAG_???");
194 PRINT_FIELD_CSTRING(", ", f, description);
195 tprints(", pixelformat=");
196 print_pixelformat(f.pixelformat);
197 }
198 tprints("}");
199 return RVAL_IOCTL_DECODED;
200 }
201
202 #include "xlat/v4l2_fields.h"
203 #include "xlat/v4l2_colorspaces.h"
204 #include "xlat/v4l2_vbi_flags.h"
205 #include "xlat/v4l2_sliced_flags.h"
206
207 static bool
print_v4l2_clip(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)208 print_v4l2_clip(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
209 {
210 const struct_v4l2_clip *p = elem_buf;
211 tprintf(FMT_RECT, ARGS_RECT(p->c));
212 return true;
213 }
214
215 static bool
print_v4l2_format_fmt(struct tcb * const tcp,const char * prefix,const struct_v4l2_format * f)216 print_v4l2_format_fmt(struct tcb *const tcp, const char *prefix,
217 const struct_v4l2_format *f)
218 {
219 bool ret = true;
220 switch (f->type) {
221 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
222 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
223 tprints(prefix);
224 tprintf("fmt.pix={width=%u, height=%u, pixelformat=",
225 f->fmt.pix.width, f->fmt.pix.height);
226 print_pixelformat(f->fmt.pix.pixelformat);
227 tprints(", field=");
228 printxval(v4l2_fields, f->fmt.pix.field, "V4L2_FIELD_???");
229 tprintf(", bytesperline=%u, sizeimage=%u, colorspace=",
230 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
231 printxval(v4l2_colorspaces, f->fmt.pix.colorspace,
232 "V4L2_COLORSPACE_???");
233 tprints("}");
234 break;
235 #if HAVE_DECL_V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
236 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
237 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: {
238 unsigned int i, max;
239
240 tprints(prefix);
241 tprintf("fmt.pix_mp={width=%u, height=%u, pixelformat=",
242 f->fmt.pix_mp.width, f->fmt.pix_mp.height);
243 print_pixelformat(f->fmt.pix_mp.pixelformat);
244 tprints(", field=");
245 printxval(v4l2_fields, f->fmt.pix_mp.field, "V4L2_FIELD_???");
246 tprints(", colorspace=");
247 printxval(v4l2_colorspaces, f->fmt.pix_mp.colorspace,
248 "V4L2_COLORSPACE_???");
249 tprints(", plane_fmt=[");
250 max = f->fmt.pix_mp.num_planes;
251 if (max > VIDEO_MAX_PLANES)
252 max = VIDEO_MAX_PLANES;
253 for (i = 0; i < max; i++) {
254 if (i > 0)
255 tprints(", ");
256 tprintf("{sizeimage=%u, bytesperline=%u}",
257 f->fmt.pix_mp.plane_fmt[i].sizeimage,
258 f->fmt.pix_mp.plane_fmt[i].bytesperline);
259 }
260 tprintf("], num_planes=%u}",
261 (unsigned) f->fmt.pix_mp.num_planes);
262 break;
263 }
264 #endif
265 /* OUTPUT_OVERLAY since Linux v2.6.22-rc1~1118^2~179 */
266 #if HAVE_DECL_V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
267 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
268 #endif
269 case V4L2_BUF_TYPE_VIDEO_OVERLAY: {
270 struct_v4l2_clip clip;
271 tprints(prefix);
272 tprintf("fmt.win={left=%d, top=%d, width=%u, height=%u, field=",
273 ARGS_RECT(f->fmt.win.w));
274 printxval(v4l2_fields, f->fmt.win.field, "V4L2_FIELD_???");
275 tprintf(", chromakey=%#x, clips=", f->fmt.win.chromakey);
276 ret = print_array(tcp, ptr_to_kulong(f->fmt.win.clips),
277 f->fmt.win.clipcount, &clip, sizeof(clip),
278 umoven_or_printaddr, print_v4l2_clip, 0);
279 tprintf(", clipcount=%u, bitmap=", f->fmt.win.clipcount);
280 printaddr(ptr_to_kulong(f->fmt.win.bitmap));
281 #ifdef HAVE_STRUCT_V4L2_WINDOW_GLOBAL_ALPHA
282 tprintf(", global_alpha=%#x", f->fmt.win.global_alpha);
283 #endif
284 tprints("}");
285 break;
286 }
287 case V4L2_BUF_TYPE_VBI_CAPTURE:
288 case V4L2_BUF_TYPE_VBI_OUTPUT:
289 tprints(prefix);
290 tprintf("fmt.vbi={sampling_rate=%u, offset=%u, "
291 "samples_per_line=%u, sample_format=",
292 f->fmt.vbi.sampling_rate, f->fmt.vbi.offset,
293 f->fmt.vbi.samples_per_line);
294 print_pixelformat(f->fmt.vbi.sample_format);
295 tprintf(", start=[%u, %u], count=[%u, %u], ",
296 f->fmt.vbi.start[0], f->fmt.vbi.start[1],
297 f->fmt.vbi.count[0], f->fmt.vbi.count[1]);
298 tprints("flags=");
299 printxval(v4l2_vbi_flags, f->fmt.vbi.flags, "V4L2_VBI_???");
300 tprints("}");
301 break;
302 /* both since Linux v2.6.14-rc2~64 */
303 #if HAVE_DECL_V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
304 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
305 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: {
306 unsigned int i, j;
307
308 tprints(prefix);
309 tprints("fmt.sliced={service_set=");
310 printxval(v4l2_sliced_flags, f->fmt.sliced.service_set,
311 "V4L2_SLICED_???");
312 tprintf(", io_size=%u, service_lines=[",
313 f->fmt.sliced.io_size);
314 for (i = 0; i < ARRAY_SIZE(f->fmt.sliced.service_lines); i++) {
315 if (i > 0)
316 tprints(", ");
317 tprints("[");
318 for (j = 0;
319 j < ARRAY_SIZE(f->fmt.sliced.service_lines[0]);
320 j++) {
321 if (j > 0)
322 tprints(", ");
323 tprintf("%#x",
324 f->fmt.sliced.service_lines[i][j]);
325 }
326 tprints("]");
327 }
328 tprints("]}");
329 break;
330 }
331 #endif
332 /* since Linux v4.4-rc1~118^2~14 */
333 #if HAVE_DECL_V4L2_BUF_TYPE_SDR_OUTPUT
334 case V4L2_BUF_TYPE_SDR_OUTPUT:
335 #endif
336 /* since Linux v3.15-rc1~85^2~213 */
337 #if HAVE_DECL_V4L2_BUF_TYPE_SDR_CAPTURE
338 case V4L2_BUF_TYPE_SDR_CAPTURE:
339 tprints(prefix);
340 tprints("fmt.sdr={pixelformat=");
341 print_pixelformat(f->fmt.sdr.pixelformat);
342 #ifdef HAVE_STRUCT_V4L2_SDR_FORMAT_BUFFERSIZE
343 tprintf(", buffersize=%u",
344 f->fmt.sdr.buffersize);
345 #endif
346 tprints("}");
347 break;
348 #endif
349 }
350 return ret;
351 }
352
353 static int
print_v4l2_format(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)354 print_v4l2_format(struct tcb *const tcp, const kernel_ulong_t arg,
355 const bool is_get)
356 {
357 struct_v4l2_format f;
358
359 if (entering(tcp)) {
360 tprints(", ");
361 if (umove_or_printaddr(tcp, arg, &f))
362 return RVAL_IOCTL_DECODED;
363 tprints("{type=");
364 printxval(v4l2_buf_types, f.type, "V4L2_BUF_TYPE_???");
365 if (is_get)
366 return 0;
367 if (!print_v4l2_format_fmt(tcp, ", ", &f)) {
368 tprints("}");
369 return RVAL_IOCTL_DECODED;
370 }
371
372 return 0;
373 }
374
375 if (!syserror(tcp) && !umove(tcp, arg, &f))
376 print_v4l2_format_fmt(tcp, is_get ? ", " : " => ", &f);
377
378 tprints("}");
379
380 return RVAL_IOCTL_DECODED;
381 }
382
383 #include "xlat/v4l2_memories.h"
384
385 static int
print_v4l2_requestbuffers(struct tcb * const tcp,const kernel_ulong_t arg)386 print_v4l2_requestbuffers(struct tcb *const tcp, const kernel_ulong_t arg)
387 {
388 struct v4l2_requestbuffers reqbufs;
389
390 if (entering(tcp)) {
391 tprints(", ");
392
393 if (umove_or_printaddr(tcp, arg, &reqbufs))
394 return RVAL_IOCTL_DECODED;
395
396 tprintf("{type=");
397 printxval(v4l2_buf_types, reqbufs.type, "V4L2_BUF_TYPE_???");
398 tprints(", memory=");
399 printxval(v4l2_memories, reqbufs.memory, "V4L2_MEMORY_???");
400 tprintf(", count=%u", reqbufs.count);
401
402 return 0;
403 }
404
405 if (!syserror(tcp)) {
406 tprints(" => ");
407
408 if (!umove(tcp, arg, &reqbufs))
409 tprintf("%u", reqbufs.count);
410 else
411 tprints("???");
412 }
413
414 tprints("}");
415
416 return RVAL_IOCTL_DECODED;
417 }
418
419 #include "xlat/v4l2_buf_flags.h"
420
421 static int
print_v4l2_buffer(struct tcb * const tcp,const unsigned int code,const kernel_ulong_t arg)422 print_v4l2_buffer(struct tcb *const tcp, const unsigned int code,
423 const kernel_ulong_t arg)
424 {
425 struct_v4l2_buffer b;
426
427 if (entering(tcp)) {
428 tprints(", ");
429 if (umove_or_printaddr(tcp, arg, &b))
430 return RVAL_IOCTL_DECODED;
431 tprints("{type=");
432 printxval(v4l2_buf_types, b.type, "V4L2_BUF_TYPE_???");
433 if (code != VIDIOC_DQBUF)
434 tprintf(", index=%u", b.index);
435
436 return 0;
437 }
438
439 if (!syserror(tcp) && !umove(tcp, arg, &b)) {
440 if (code == VIDIOC_DQBUF)
441 tprintf(", index=%u", b.index);
442 tprints(", memory=");
443 printxval(v4l2_memories, b.memory, "V4L2_MEMORY_???");
444
445 if (b.memory == V4L2_MEMORY_MMAP) {
446 tprintf(", m.offset=%#x", b.m.offset);
447 } else if (b.memory == V4L2_MEMORY_USERPTR) {
448 tprints(", m.userptr=");
449 printaddr(b.m.userptr);
450 }
451
452 tprintf(", length=%u, bytesused=%u, flags=",
453 b.length, b.bytesused);
454 printflags(v4l2_buf_flags, b.flags, "V4L2_BUF_FLAG_???");
455 if (code == VIDIOC_DQBUF) {
456 tprints(", timestamp = ");
457 MPERS_FUNC_NAME(print_struct_timeval)(&b.timestamp);
458 }
459 tprints(", ...");
460 }
461
462 tprints("}");
463
464 return RVAL_IOCTL_DECODED;
465 }
466
467 static int
print_v4l2_framebuffer(struct tcb * const tcp,const kernel_ulong_t arg)468 print_v4l2_framebuffer(struct tcb *const tcp, const kernel_ulong_t arg)
469 {
470 struct_v4l2_framebuffer b;
471
472 tprints(", ");
473 if (!umove_or_printaddr(tcp, arg, &b)) {
474 tprintf("{capability=%#x, flags=%#x, base=",
475 b.capability, b.flags);
476 printaddr(ptr_to_kulong(b.base));
477 tprints("}");
478 }
479
480 return RVAL_IOCTL_DECODED;
481 }
482
483 static int
print_v4l2_buf_type(struct tcb * const tcp,const kernel_ulong_t arg)484 print_v4l2_buf_type(struct tcb *const tcp, const kernel_ulong_t arg)
485 {
486 int type;
487
488 tprints(", ");
489 if (!umove_or_printaddr(tcp, arg, &type)) {
490 tprints("[");
491 printxval(v4l2_buf_types, type, "V4L2_BUF_TYPE_???");
492 tprints("]");
493 }
494 return RVAL_IOCTL_DECODED;
495 }
496
497 #include "xlat/v4l2_streaming_capabilities.h"
498 #include "xlat/v4l2_capture_modes.h"
499
500 static int
print_v4l2_streamparm(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)501 print_v4l2_streamparm(struct tcb *const tcp, const kernel_ulong_t arg,
502 const bool is_get)
503 {
504 struct v4l2_streamparm s;
505
506 if (entering(tcp)) {
507 tprints(", ");
508 if (umove_or_printaddr(tcp, arg, &s))
509 return RVAL_IOCTL_DECODED;
510 tprints("{type=");
511 printxval(v4l2_buf_types, s.type, "V4L2_BUF_TYPE_???");
512 switch (s.type) {
513 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
514 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
515 if (is_get)
516 return 0;
517 tprints(", ");
518 break;
519 default:
520 tprints("}");
521 return RVAL_IOCTL_DECODED;
522 }
523 } else {
524 if (syserror(tcp) || umove(tcp, arg, &s) < 0) {
525 tprints("}");
526 return RVAL_IOCTL_DECODED;
527 }
528 tprints(is_get ? ", " : " => ");
529 }
530
531 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
532 tprints("parm.capture={capability=");
533 printflags(v4l2_streaming_capabilities,
534 s.parm.capture.capability, "V4L2_CAP_???");
535
536 tprints(", capturemode=");
537 printflags(v4l2_capture_modes,
538 s.parm.capture.capturemode, "V4L2_MODE_???");
539
540 tprintf(", timeperframe=" FMT_FRACT,
541 ARGS_FRACT(s.parm.capture.timeperframe));
542
543 tprintf(", extendedmode=%u, readbuffers=%u}",
544 s.parm.capture.extendedmode,
545 s.parm.capture.readbuffers);
546 } else {
547 tprints("parm.output={capability=");
548 printflags(v4l2_streaming_capabilities,
549 s.parm.output.capability, "V4L2_CAP_???");
550
551 tprintf(", outputmode=%u", s.parm.output.outputmode);
552
553 tprintf(", timeperframe=" FMT_FRACT,
554 ARGS_FRACT(s.parm.output.timeperframe));
555
556 tprintf(", extendedmode=%u, writebuffers=%u}",
557 s.parm.output.extendedmode,
558 s.parm.output.writebuffers);
559 }
560 if (entering(tcp)) {
561 return 0;
562 } else {
563 tprints("}");
564 return RVAL_IOCTL_DECODED;
565 }
566 }
567
568 static int
print_v4l2_standard(struct tcb * const tcp,const kernel_ulong_t arg)569 print_v4l2_standard(struct tcb *const tcp, const kernel_ulong_t arg)
570 {
571 struct_v4l2_standard s;
572
573 if (entering(tcp)) {
574 tprints(", ");
575 if (umove_or_printaddr(tcp, arg, &s))
576 return RVAL_IOCTL_DECODED;
577 tprintf("{index=%u", s.index);
578
579 return 0;
580 }
581
582 if (!syserror(tcp) && !umove(tcp, arg, &s)) {
583 PRINT_FIELD_CSTRING(", ", s, name);
584 tprintf(", frameperiod=" FMT_FRACT,
585 ARGS_FRACT(s.frameperiod));
586 tprintf(", framelines=%d", s.framelines);
587 }
588
589 tprints("}");
590
591 return RVAL_IOCTL_DECODED;
592 }
593
594 #include "xlat/v4l2_input_types.h"
595
596 static int
print_v4l2_input(struct tcb * const tcp,const kernel_ulong_t arg)597 print_v4l2_input(struct tcb *const tcp, const kernel_ulong_t arg)
598 {
599 struct_v4l2_input i;
600
601 if (entering(tcp)) {
602 tprints(", ");
603 if (umove_or_printaddr(tcp, arg, &i))
604 return RVAL_IOCTL_DECODED;
605 tprintf("{index=%u", i.index);
606
607 return 0;
608 }
609
610 if (!syserror(tcp) && !umove(tcp, arg, &i)) {
611 PRINT_FIELD_CSTRING(", ", i, name);
612 tprints(", type=");
613 printxval(v4l2_input_types, i.type, "V4L2_INPUT_TYPE_???");
614 }
615
616 tprints("}");
617
618 return RVAL_IOCTL_DECODED;
619 }
620
621 #include "xlat/v4l2_control_ids.h"
622
623 static int
print_v4l2_control(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)624 print_v4l2_control(struct tcb *const tcp, const kernel_ulong_t arg,
625 const bool is_get)
626 {
627 struct v4l2_control c;
628
629 if (entering(tcp)) {
630 tprints(", ");
631 if (umove_or_printaddr(tcp, arg, &c))
632 return RVAL_IOCTL_DECODED;
633 tprints("{id=");
634 printxval(v4l2_control_ids, c.id, "V4L2_CID_???");
635 if (!is_get)
636 tprintf(", value=%d", c.value);
637 return 0;
638 }
639
640 if (!syserror(tcp) && !umove(tcp, arg, &c)) {
641 tprints(is_get ? ", " : " => ");
642 tprintf("value=%d", c.value);
643 }
644
645 tprints("}");
646
647 return RVAL_IOCTL_DECODED;
648 }
649
650 #include "xlat/v4l2_tuner_types.h"
651 #include "xlat/v4l2_tuner_capabilities.h"
652 #include "xlat/v4l2_tuner_rxsubchanses.h"
653 #include "xlat/v4l2_tuner_audmodes.h"
654
655 static int
print_v4l2_tuner(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)656 print_v4l2_tuner(struct tcb *const tcp, const kernel_ulong_t arg,
657 const bool is_get)
658 {
659 struct v4l2_tuner c;
660 if (entering(tcp)) {
661 tprints(", ");
662 if (umove_or_printaddr(tcp, arg, &c))
663 return RVAL_IOCTL_DECODED;
664 tprintf("{index=%u", c.index);
665 if (is_get)
666 return 0;
667 tprints(", ");
668 } else {
669 if (syserror(tcp) || umove(tcp, arg, &c) < 0) {
670 tprints("}");
671 return RVAL_IOCTL_DECODED;
672 }
673 tprints(is_get ? ", " : " => ");
674 }
675
676 PRINT_FIELD_CSTRING("", c, name);
677 tprints(", type=");
678 printxval(v4l2_tuner_types, c.type, "V4L2_TUNER_TYPE_???");
679 tprints(", capability=");
680 printxval(v4l2_tuner_capabilities, c.capability,
681 "V4L2_TUNER_CAP_???");
682 tprintf(", rangelow=%u, rangehigh=%u, rxsubchans=",
683 c.rangelow, c.rangehigh);
684 printxval(v4l2_tuner_rxsubchanses, c.rxsubchans,
685 "V4L2_TUNER_SUB_???");
686 tprints(", audmode=");
687 printxval(v4l2_tuner_audmodes, c.audmode,
688 "V4L2_TUNER_MODE_???");
689 tprintf(", signal=%d, afc=%d", c.signal, c.afc);
690
691 if (entering(tcp)) {
692 return 0;
693 } else {
694 tprints("}");
695 return RVAL_IOCTL_DECODED;
696 }
697 }
698
699 #include "xlat/v4l2_control_types.h"
700 #include "xlat/v4l2_control_flags.h"
701
702 static int
print_v4l2_queryctrl(struct tcb * const tcp,const kernel_ulong_t arg)703 print_v4l2_queryctrl(struct tcb *const tcp, const kernel_ulong_t arg)
704 {
705 struct v4l2_queryctrl c;
706
707 if (entering(tcp)) {
708 tprints(", ");
709 if (umove_or_printaddr(tcp, arg, &c))
710 return RVAL_IOCTL_DECODED;
711 tprints("{id=");
712 } else {
713 if (syserror(tcp) || umove(tcp, arg, &c) < 0) {
714 tprints("}");
715 return RVAL_IOCTL_DECODED;
716 }
717 if (get_tcb_priv_ulong(tcp))
718 tprints(" => ");
719 }
720
721 if (entering(tcp) || get_tcb_priv_ulong(tcp)) {
722 #ifdef V4L2_CTRL_FLAG_NEXT_CTRL
723 const unsigned long next = c.id & V4L2_CTRL_FLAG_NEXT_CTRL;
724 set_tcb_priv_ulong(tcp, next);
725 if (next) {
726 tprints("V4L2_CTRL_FLAG_NEXT_CTRL|");
727 c.id &= ~V4L2_CTRL_FLAG_NEXT_CTRL;
728 }
729 #endif
730 printxval(v4l2_control_ids, c.id, "V4L2_CID_???");
731 }
732
733 if (exiting(tcp)) {
734 tprints(", type=");
735 printxval(v4l2_control_types, c.type, "V4L2_CTRL_TYPE_???");
736 PRINT_FIELD_CSTRING(", ", c, name);
737 tprintf(", minimum=%d, maximum=%d, step=%d"
738 ", default_value=%d, flags=",
739 c.minimum, c.maximum, c.step, c.default_value);
740 printflags(v4l2_control_flags, c.flags, "V4L2_CTRL_FLAG_???");
741 tprints("}");
742 }
743 return entering(tcp) ? 0 : RVAL_IOCTL_DECODED;
744 }
745
746 static int
print_v4l2_cropcap(struct tcb * const tcp,const kernel_ulong_t arg)747 print_v4l2_cropcap(struct tcb *const tcp, const kernel_ulong_t arg)
748 {
749 struct v4l2_cropcap c;
750
751 if (entering(tcp)) {
752 tprints(", ");
753 if (umove_or_printaddr(tcp, arg, &c))
754 return RVAL_IOCTL_DECODED;
755 tprints("{type=");
756 printxval(v4l2_buf_types, c.type, "V4L2_BUF_TYPE_???");
757
758 return 0;
759 }
760
761 if (!syserror(tcp) && !umove(tcp, arg, &c)) {
762 tprintf(", bounds=" FMT_RECT
763 ", defrect=" FMT_RECT
764 ", pixelaspect=" FMT_FRACT,
765 ARGS_RECT(c.bounds),
766 ARGS_RECT(c.defrect),
767 ARGS_FRACT(c.pixelaspect));
768 }
769
770 tprints("}");
771
772 return RVAL_IOCTL_DECODED;
773 }
774
775 static int
print_v4l2_crop(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)776 print_v4l2_crop(struct tcb *const tcp, const kernel_ulong_t arg,
777 const bool is_get)
778 {
779 struct v4l2_crop c;
780
781 if (entering(tcp)) {
782 tprints(", ");
783 if (umove_or_printaddr(tcp, arg, &c))
784 return RVAL_IOCTL_DECODED;
785 tprints("{type=");
786 printxval(v4l2_buf_types, c.type, "V4L2_BUF_TYPE_???");
787 if (is_get)
788 return 0;
789 tprintf(", c=" FMT_RECT, ARGS_RECT(c.c));
790 } else {
791 if (!syserror(tcp) && !umove(tcp, arg, &c))
792 tprintf(", c=" FMT_RECT, ARGS_RECT(c.c));
793 }
794
795 tprints("}");
796
797 return RVAL_IOCTL_DECODED;
798 }
799
800 #ifdef VIDIOC_S_EXT_CTRLS
801 static bool
print_v4l2_ext_control(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)802 print_v4l2_ext_control(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
803 {
804 const struct_v4l2_ext_control *p = elem_buf;
805
806 tprints("{id=");
807 printxval(v4l2_control_ids, p->id, "V4L2_CID_???");
808 # if HAVE_DECL_V4L2_CTRL_TYPE_STRING
809 tprintf(", size=%u", p->size);
810 if (p->size > 0) {
811 tprints(", string=");
812 printstrn(tcp, ptr_to_kulong(p->string), p->size);
813 } else
814 # endif
815 tprintf(", value=%d, value64=%" PRId64, p->value, (int64_t) p->value64);
816 tprints("}");
817
818 return true;
819 }
820
821 #include "xlat/v4l2_control_classes.h"
822
823 static int
print_v4l2_ext_controls(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)824 print_v4l2_ext_controls(struct tcb *const tcp, const kernel_ulong_t arg,
825 const bool is_get)
826 {
827 struct_v4l2_ext_controls c;
828
829 if (entering(tcp)) {
830 tprints(", ");
831 if (umove_or_printaddr(tcp, arg, &c))
832 return RVAL_IOCTL_DECODED;
833 tprints("{ctrl_class=");
834 printxval(v4l2_control_classes, c.ctrl_class,
835 "V4L2_CTRL_CLASS_???");
836 tprintf(", count=%u", c.count);
837 if (!c.count) {
838 tprints("}");
839 return RVAL_IOCTL_DECODED;
840 }
841 if (is_get)
842 return 0;
843 tprints(", ");
844 } else {
845 if (umove(tcp, arg, &c) < 0) {
846 tprints("}");
847 return RVAL_IOCTL_DECODED;
848 }
849 tprints(is_get ? ", " : " => ");
850 }
851
852 tprints("controls=");
853 struct_v4l2_ext_control ctrl;
854 bool fail = !print_array(tcp, ptr_to_kulong(c.controls), c.count,
855 &ctrl, sizeof(ctrl),
856 umoven_or_printaddr_ignore_syserror,
857 print_v4l2_ext_control, 0);
858
859 if (exiting(tcp) && syserror(tcp))
860 tprintf(", error_idx=%u", c.error_idx);
861
862 if (exiting(tcp) || fail) {
863 tprints("}");
864 return RVAL_IOCTL_DECODED;
865 }
866
867 /* entering */
868 return 0;
869 }
870 #endif /* VIDIOC_S_EXT_CTRLS */
871
872 #ifdef VIDIOC_ENUM_FRAMESIZES
873 # include "xlat/v4l2_framesize_types.h"
874
875 static int
print_v4l2_frmsizeenum(struct tcb * const tcp,const kernel_ulong_t arg)876 print_v4l2_frmsizeenum(struct tcb *const tcp, const kernel_ulong_t arg)
877 {
878 struct v4l2_frmsizeenum s;
879
880 if (entering(tcp)) {
881 tprints(", ");
882 if (umove_or_printaddr(tcp, arg, &s))
883 return RVAL_IOCTL_DECODED;
884 tprintf("{index=%u, pixel_format=", s.index);
885 print_pixelformat(s.pixel_format);
886 return 0;
887 }
888
889 if (!syserror(tcp) && !umove(tcp, arg, &s)) {
890 tprints(", type=");
891 printxval(v4l2_framesize_types, s.type, "V4L2_FRMSIZE_TYPE_???");
892 switch (s.type) {
893 case V4L2_FRMSIZE_TYPE_DISCRETE:
894 tprintf(", discrete={width=%u, height=%u}",
895 s.discrete.width, s.discrete.height);
896 break;
897 case V4L2_FRMSIZE_TYPE_STEPWISE:
898 tprintf(", stepwise={min_width=%u, max_width=%u, "
899 "step_width=%u, min_height=%u, max_height=%u, "
900 "step_height=%u}",
901 s.stepwise.min_width, s.stepwise.max_width,
902 s.stepwise.step_width, s.stepwise.min_height,
903 s.stepwise.max_height, s.stepwise.step_height);
904 break;
905 }
906 }
907 tprints("}");
908 return RVAL_IOCTL_DECODED;
909 }
910 #endif /* VIDIOC_ENUM_FRAMESIZES */
911
912 #ifdef VIDIOC_ENUM_FRAMEINTERVALS
913 # include "xlat/v4l2_frameinterval_types.h"
914
915 static int
print_v4l2_frmivalenum(struct tcb * const tcp,const kernel_ulong_t arg)916 print_v4l2_frmivalenum(struct tcb *const tcp, const kernel_ulong_t arg)
917 {
918 struct v4l2_frmivalenum f;
919
920 if (entering(tcp)) {
921 tprints(", ");
922 if (umove_or_printaddr(tcp, arg, &f))
923 return RVAL_IOCTL_DECODED;
924 tprintf("{index=%u, pixel_format=", f.index);
925 print_pixelformat(f.pixel_format);
926 tprintf(", width=%u, height=%u", f.width, f.height);
927 return 0;
928 }
929
930 if (!syserror(tcp) && !umove(tcp, arg, &f)) {
931 tprints(", type=");
932 printxval(v4l2_frameinterval_types, f.type,
933 "V4L2_FRMIVAL_TYPE_???");
934 switch (f.type) {
935 case V4L2_FRMIVAL_TYPE_DISCRETE:
936 tprintf(", discrete=" FMT_FRACT,
937 ARGS_FRACT(f.discrete));
938 break;
939 case V4L2_FRMIVAL_TYPE_STEPWISE:
940 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
941 tprintf(", stepwise={min=" FMT_FRACT ", max="
942 FMT_FRACT ", step=" FMT_FRACT "}",
943 ARGS_FRACT(f.stepwise.min),
944 ARGS_FRACT(f.stepwise.max),
945 ARGS_FRACT(f.stepwise.step));
946 break;
947 }
948 }
949
950 tprints("}");
951
952 return RVAL_IOCTL_DECODED;
953 }
954 #endif /* VIDIOC_ENUM_FRAMEINTERVALS */
955
956 #ifdef VIDIOC_CREATE_BUFS
957 static int
print_v4l2_create_buffers(struct tcb * const tcp,const kernel_ulong_t arg)958 print_v4l2_create_buffers(struct tcb *const tcp, const kernel_ulong_t arg)
959 {
960 static const char fmt[] = "{index=%u, count=%u}";
961 static char outstr[sizeof(fmt) + sizeof(int) * 6];
962
963 struct_v4l2_create_buffers b;
964
965 if (entering(tcp)) {
966 tprints(", ");
967 if (umove_or_printaddr(tcp, arg, &b))
968 return RVAL_IOCTL_DECODED;
969 tprintf("{count=%u, memory=", b.count);
970 printxval(v4l2_memories, b.memory, "V4L2_MEMORY_???");
971 tprints(", format={type=");
972 printxval(v4l2_buf_types, b.format.type,
973 "V4L2_BUF_TYPE_???");
974 print_v4l2_format_fmt(tcp, ", ",
975 (struct_v4l2_format *) &b.format);
976 tprints("}}");
977 return 0;
978 }
979
980 if (syserror(tcp) || umove(tcp, arg, &b))
981 return RVAL_IOCTL_DECODED;
982
983 xsprintf(outstr, fmt, b.index, b.count);
984 tcp->auxstr = outstr;
985
986 return RVAL_IOCTL_DECODED | RVAL_STR;
987 }
988 #endif /* VIDIOC_CREATE_BUFS */
989
MPERS_PRINTER_DECL(int,v4l2_ioctl,struct tcb * const tcp,const unsigned int code,const kernel_ulong_t arg)990 MPERS_PRINTER_DECL(int, v4l2_ioctl, struct tcb *const tcp,
991 const unsigned int code, const kernel_ulong_t arg)
992 {
993 if (!verbose(tcp))
994 return RVAL_DECODED;
995
996 switch (code) {
997 case VIDIOC_QUERYCAP: /* R */
998 return print_v4l2_capability(tcp, arg);
999
1000 case VIDIOC_ENUM_FMT: /* RW */
1001 return print_v4l2_fmtdesc(tcp, arg);
1002
1003 case VIDIOC_G_FMT: /* RW */
1004 case VIDIOC_S_FMT: /* RW */
1005 case VIDIOC_TRY_FMT: /* RW */
1006 return print_v4l2_format(tcp, arg, code == VIDIOC_G_FMT);
1007
1008 case VIDIOC_REQBUFS: /* RW */
1009 return print_v4l2_requestbuffers(tcp, arg);
1010
1011 case VIDIOC_QUERYBUF: /* RW */
1012 case VIDIOC_QBUF: /* RW */
1013 case VIDIOC_DQBUF: /* RW */
1014 return print_v4l2_buffer(tcp, code, arg);
1015
1016 case VIDIOC_G_FBUF: /* R */
1017 if (entering(tcp))
1018 return 0;
1019 /* fall through */
1020 case VIDIOC_S_FBUF: /* W */
1021 return print_v4l2_framebuffer(tcp, arg);
1022
1023 case VIDIOC_STREAMON: /* W */
1024 case VIDIOC_STREAMOFF: /* W */
1025 return print_v4l2_buf_type(tcp, arg);
1026
1027 case VIDIOC_G_PARM: /* RW */
1028 case VIDIOC_S_PARM: /* RW */
1029 return print_v4l2_streamparm(tcp, arg, code == VIDIOC_G_PARM);
1030
1031 case VIDIOC_G_STD: /* R */
1032 if (entering(tcp))
1033 return 0;
1034 /* fall through */
1035 case VIDIOC_S_STD: /* W */
1036 tprints(", ");
1037 printnum_int64(tcp, arg, "%#" PRIx64);
1038 break;
1039
1040 case VIDIOC_ENUMSTD: /* RW */
1041 return print_v4l2_standard(tcp, arg);
1042
1043 case VIDIOC_ENUMINPUT: /* RW */
1044 return print_v4l2_input(tcp, arg);
1045
1046 case VIDIOC_G_CTRL: /* RW */
1047 case VIDIOC_S_CTRL: /* RW */
1048 return print_v4l2_control(tcp, arg, code == VIDIOC_G_CTRL);
1049
1050 case VIDIOC_G_TUNER: /* RW */
1051 case VIDIOC_S_TUNER: /* RW */
1052 return print_v4l2_tuner(tcp, arg, code == VIDIOC_G_TUNER);
1053
1054 case VIDIOC_QUERYCTRL: /* RW */
1055 return print_v4l2_queryctrl(tcp, arg);
1056
1057 case VIDIOC_G_INPUT: /* R */
1058 if (entering(tcp))
1059 return 0;
1060 /* fall through */
1061 case VIDIOC_S_INPUT: /* RW */
1062 tprints(", ");
1063 printnum_int(tcp, arg, "%u");
1064 break;
1065
1066 case VIDIOC_CROPCAP: /* RW */
1067 return print_v4l2_cropcap(tcp, arg);
1068
1069 case VIDIOC_G_CROP: /* RW */
1070 case VIDIOC_S_CROP: /* W */
1071 return print_v4l2_crop(tcp, arg, code == VIDIOC_G_CROP);
1072
1073 #ifdef VIDIOC_S_EXT_CTRLS
1074 case VIDIOC_S_EXT_CTRLS: /* RW */
1075 case VIDIOC_TRY_EXT_CTRLS: /* RW */
1076 case VIDIOC_G_EXT_CTRLS: /* RW */
1077 return print_v4l2_ext_controls(tcp, arg,
1078 code == VIDIOC_G_EXT_CTRLS);
1079 #endif /* VIDIOC_S_EXT_CTRLS */
1080
1081 #ifdef VIDIOC_ENUM_FRAMESIZES
1082 case VIDIOC_ENUM_FRAMESIZES: /* RW */
1083 return print_v4l2_frmsizeenum(tcp, arg);
1084 #endif /* VIDIOC_ENUM_FRAMESIZES */
1085
1086 #ifdef VIDIOC_ENUM_FRAMEINTERVALS
1087 case VIDIOC_ENUM_FRAMEINTERVALS: /* RW */
1088 return print_v4l2_frmivalenum(tcp, arg);
1089 #endif /* VIDIOC_ENUM_FRAMEINTERVALS */
1090
1091 #ifdef VIDIOC_CREATE_BUFS
1092 case VIDIOC_CREATE_BUFS: /* RW */
1093 return print_v4l2_create_buffers(tcp, arg);
1094 #endif /* VIDIOC_CREATE_BUFS */
1095
1096 default:
1097 return RVAL_DECODED;
1098 }
1099
1100 return RVAL_IOCTL_DECODED;
1101 }
1102