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 /* v4l2_fourcc_be was added by Linux commit v3.18-rc1~101^2^2~127 */
68 #ifndef v4l2_fourcc_be
69 # define v4l2_fourcc_be(a, b, c, d) (v4l2_fourcc(a, b, c, d) | (1 << 31))
70 #endif
71
72 #define FMT_FRACT "%u/%u"
73 #define ARGS_FRACT(x) ((x).numerator), ((x).denominator)
74
75 #define FMT_RECT "{left=%d, top=%d, width=%u, height=%u}"
76 #define ARGS_RECT(x) (x).left, (x).top, (x).width, (x).height
77
78 #include "xlat/v4l2_pix_fmts.h"
79 #include "xlat/v4l2_sdr_fmts.h"
80
81 static void
print_pixelformat(uint32_t fourcc,const struct xlat * xlat)82 print_pixelformat(uint32_t fourcc, const struct xlat *xlat)
83 {
84 unsigned char a[] = {
85 (unsigned char) fourcc,
86 (unsigned char) (fourcc >> 8),
87 (unsigned char) (fourcc >> 16),
88 (unsigned char) (fourcc >> 24),
89 };
90 unsigned int i;
91
92 tprints("v4l2_fourcc(");
93 for (i = 0; i < ARRAY_SIZE(a); ++i) {
94 unsigned char c = a[i];
95
96 if (i)
97 tprints(", ");
98 if (c == '\'' || c == '\\') {
99 char sym[] = {
100 '\'',
101 '\\',
102 c,
103 '\'',
104 '\0'
105 };
106 tprints(sym);
107 } else if (c >= ' ' && c <= 0x7e) {
108 char sym[] = {
109 '\'',
110 c,
111 '\'',
112 '\0'
113 };
114 tprints(sym);
115 } else {
116 char hex[] = {
117 '\'',
118 '\\',
119 'x',
120 "0123456789abcdef"[c >> 4],
121 "0123456789abcdef"[c & 0xf],
122 '\'',
123 '\0'
124 };
125 tprints(hex);
126 }
127 }
128 tprints(")");
129
130 if (xlat) {
131 const char *pixfmt_name = xlookup(xlat, fourcc);
132
133 if (pixfmt_name)
134 tprints_comment(pixfmt_name);
135 }
136 }
137
138 #include "xlat/v4l2_device_capabilities_flags.h"
139
140 static int
print_v4l2_capability(struct tcb * const tcp,const kernel_ulong_t arg)141 print_v4l2_capability(struct tcb *const tcp, const kernel_ulong_t arg)
142 {
143 struct v4l2_capability caps;
144
145 if (entering(tcp))
146 return 0;
147 tprints(", ");
148 if (umove_or_printaddr(tcp, arg, &caps))
149 return RVAL_IOCTL_DECODED;
150 PRINT_FIELD_CSTRING("{", caps, driver);
151 PRINT_FIELD_CSTRING(", ", caps, card);
152 PRINT_FIELD_CSTRING(", ", caps, bus_info);
153 tprintf(", version=%u.%u.%u, capabilities=",
154 (caps.version >> 16) & 0xFF,
155 (caps.version >> 8) & 0xFF,
156 caps.version & 0xFF);
157 printflags(v4l2_device_capabilities_flags, caps.capabilities,
158 "V4L2_CAP_???");
159 #ifdef V4L2_CAP_DEVICE_CAPS
160 tprints(", device_caps=");
161 printflags(v4l2_device_capabilities_flags, caps.device_caps,
162 "V4L2_CAP_???");
163 #endif
164 tprints("}");
165 return RVAL_IOCTL_DECODED;
166 }
167
168 #include "xlat/v4l2_buf_types.h"
169 #include "xlat/v4l2_format_description_flags.h"
170
171 static int
print_v4l2_fmtdesc(struct tcb * const tcp,const kernel_ulong_t arg)172 print_v4l2_fmtdesc(struct tcb *const tcp, const kernel_ulong_t arg)
173 {
174 struct v4l2_fmtdesc f;
175
176 if (entering(tcp)) {
177 tprints(", ");
178 if (umove_or_printaddr(tcp, arg, &f))
179 return RVAL_IOCTL_DECODED;
180 tprintf("{index=%u, type=", f.index);
181 printxval(v4l2_buf_types, f.type, "V4L2_BUF_TYPE_???");
182 return 0;
183 }
184
185 if (!syserror(tcp) && !umove(tcp, arg, &f)) {
186 tprints(", flags=");
187 printflags(v4l2_format_description_flags, f.flags,
188 "V4L2_FMT_FLAG_???");
189 PRINT_FIELD_CSTRING(", ", f, description);
190 tprints(", pixelformat=");
191 print_pixelformat(f.pixelformat, v4l2_pix_fmts);
192 }
193 tprints("}");
194 return RVAL_IOCTL_DECODED;
195 }
196
197 #include "xlat/v4l2_fields.h"
198 #include "xlat/v4l2_colorspaces.h"
199 #include "xlat/v4l2_vbi_flags.h"
200 #include "xlat/v4l2_sliced_flags.h"
201
202 static bool
print_v4l2_clip(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)203 print_v4l2_clip(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
204 {
205 const struct_v4l2_clip *p = elem_buf;
206 tprintf(FMT_RECT, ARGS_RECT(p->c));
207 return true;
208 }
209
210 static bool
print_v4l2_format_fmt(struct tcb * const tcp,const char * prefix,const struct_v4l2_format * f)211 print_v4l2_format_fmt(struct tcb *const tcp, const char *prefix,
212 const struct_v4l2_format *f)
213 {
214 bool ret = true;
215 switch (f->type) {
216 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
217 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
218 tprints(prefix);
219 tprintf("fmt.pix={width=%u, height=%u, pixelformat=",
220 f->fmt.pix.width, f->fmt.pix.height);
221 print_pixelformat(f->fmt.pix.pixelformat, v4l2_pix_fmts);
222 tprints(", field=");
223 printxval(v4l2_fields, f->fmt.pix.field, "V4L2_FIELD_???");
224 tprintf(", bytesperline=%u, sizeimage=%u, colorspace=",
225 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
226 printxval(v4l2_colorspaces, f->fmt.pix.colorspace,
227 "V4L2_COLORSPACE_???");
228 tprints("}");
229 break;
230 #if HAVE_DECL_V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
231 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
232 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: {
233 unsigned int i, max;
234
235 tprints(prefix);
236 tprintf("fmt.pix_mp={width=%u, height=%u, pixelformat=",
237 f->fmt.pix_mp.width, f->fmt.pix_mp.height);
238 print_pixelformat(f->fmt.pix_mp.pixelformat, v4l2_pix_fmts);
239 tprints(", field=");
240 printxval(v4l2_fields, f->fmt.pix_mp.field, "V4L2_FIELD_???");
241 tprints(", colorspace=");
242 printxval(v4l2_colorspaces, f->fmt.pix_mp.colorspace,
243 "V4L2_COLORSPACE_???");
244 tprints(", plane_fmt=[");
245 max = f->fmt.pix_mp.num_planes;
246 if (max > VIDEO_MAX_PLANES)
247 max = VIDEO_MAX_PLANES;
248 for (i = 0; i < max; i++) {
249 if (i > 0)
250 tprints(", ");
251 tprintf("{sizeimage=%u, bytesperline=%u}",
252 f->fmt.pix_mp.plane_fmt[i].sizeimage,
253 f->fmt.pix_mp.plane_fmt[i].bytesperline);
254 }
255 tprintf("], num_planes=%u}",
256 (unsigned) f->fmt.pix_mp.num_planes);
257 break;
258 }
259 #endif
260 /* OUTPUT_OVERLAY since Linux v2.6.22-rc1~1118^2~179 */
261 #if HAVE_DECL_V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
262 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
263 #endif
264 case V4L2_BUF_TYPE_VIDEO_OVERLAY: {
265 struct_v4l2_clip clip;
266 tprints(prefix);
267 tprintf("fmt.win={left=%d, top=%d, width=%u, height=%u, field=",
268 ARGS_RECT(f->fmt.win.w));
269 printxval(v4l2_fields, f->fmt.win.field, "V4L2_FIELD_???");
270 tprintf(", chromakey=%#x, clips=", f->fmt.win.chromakey);
271 ret = print_array(tcp, ptr_to_kulong(f->fmt.win.clips),
272 f->fmt.win.clipcount, &clip, sizeof(clip),
273 tfetch_mem, print_v4l2_clip, 0);
274 tprintf(", clipcount=%u, bitmap=", f->fmt.win.clipcount);
275 printaddr(ptr_to_kulong(f->fmt.win.bitmap));
276 #ifdef HAVE_STRUCT_V4L2_WINDOW_GLOBAL_ALPHA
277 tprintf(", global_alpha=%#x", f->fmt.win.global_alpha);
278 #endif
279 tprints("}");
280 break;
281 }
282 case V4L2_BUF_TYPE_VBI_CAPTURE:
283 case V4L2_BUF_TYPE_VBI_OUTPUT:
284 tprints(prefix);
285 tprintf("fmt.vbi={sampling_rate=%u, offset=%u, "
286 "samples_per_line=%u, sample_format=",
287 f->fmt.vbi.sampling_rate, f->fmt.vbi.offset,
288 f->fmt.vbi.samples_per_line);
289 print_pixelformat(f->fmt.vbi.sample_format, v4l2_pix_fmts);
290 tprintf(", start=[%u, %u], count=[%u, %u], ",
291 f->fmt.vbi.start[0], f->fmt.vbi.start[1],
292 f->fmt.vbi.count[0], f->fmt.vbi.count[1]);
293 tprints("flags=");
294 printxval(v4l2_vbi_flags, f->fmt.vbi.flags, "V4L2_VBI_???");
295 tprints("}");
296 break;
297 /* both since Linux v2.6.14-rc2~64 */
298 #if HAVE_DECL_V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
299 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
300 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: {
301 unsigned int i, j;
302
303 tprints(prefix);
304 tprints("fmt.sliced={service_set=");
305 printxval(v4l2_sliced_flags, f->fmt.sliced.service_set,
306 "V4L2_SLICED_???");
307 tprintf(", io_size=%u, service_lines=[",
308 f->fmt.sliced.io_size);
309 for (i = 0; i < ARRAY_SIZE(f->fmt.sliced.service_lines); i++) {
310 if (i > 0)
311 tprints(", ");
312 tprints("[");
313 for (j = 0;
314 j < ARRAY_SIZE(f->fmt.sliced.service_lines[0]);
315 j++) {
316 if (j > 0)
317 tprints(", ");
318 tprintf("%#x",
319 f->fmt.sliced.service_lines[i][j]);
320 }
321 tprints("]");
322 }
323 tprints("]}");
324 break;
325 }
326 #endif
327 /* since Linux v4.4-rc1~118^2~14 */
328 #if HAVE_DECL_V4L2_BUF_TYPE_SDR_OUTPUT
329 case V4L2_BUF_TYPE_SDR_OUTPUT:
330 #endif
331 /* since Linux v3.15-rc1~85^2~213 */
332 #if HAVE_DECL_V4L2_BUF_TYPE_SDR_CAPTURE
333 case V4L2_BUF_TYPE_SDR_CAPTURE:
334 tprints(prefix);
335 tprints("fmt.sdr={pixelformat=");
336 print_pixelformat(f->fmt.sdr.pixelformat, v4l2_sdr_fmts);
337 #ifdef HAVE_STRUCT_V4L2_SDR_FORMAT_BUFFERSIZE
338 tprintf(", buffersize=%u",
339 f->fmt.sdr.buffersize);
340 #endif
341 tprints("}");
342 break;
343 #endif
344 }
345 return ret;
346 }
347
348 static int
print_v4l2_format(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)349 print_v4l2_format(struct tcb *const tcp, const kernel_ulong_t arg,
350 const bool is_get)
351 {
352 struct_v4l2_format f;
353
354 if (entering(tcp)) {
355 tprints(", ");
356 if (umove_or_printaddr(tcp, arg, &f))
357 return RVAL_IOCTL_DECODED;
358 tprints("{type=");
359 printxval(v4l2_buf_types, f.type, "V4L2_BUF_TYPE_???");
360 if (is_get)
361 return 0;
362 if (!print_v4l2_format_fmt(tcp, ", ", &f)) {
363 tprints("}");
364 return RVAL_IOCTL_DECODED;
365 }
366
367 return 0;
368 }
369
370 if (!syserror(tcp) && !umove(tcp, arg, &f))
371 print_v4l2_format_fmt(tcp, is_get ? ", " : " => ", &f);
372
373 tprints("}");
374
375 return RVAL_IOCTL_DECODED;
376 }
377
378 #include "xlat/v4l2_memories.h"
379
380 static int
print_v4l2_requestbuffers(struct tcb * const tcp,const kernel_ulong_t arg)381 print_v4l2_requestbuffers(struct tcb *const tcp, const kernel_ulong_t arg)
382 {
383 struct v4l2_requestbuffers reqbufs;
384
385 if (entering(tcp)) {
386 tprints(", ");
387
388 if (umove_or_printaddr(tcp, arg, &reqbufs))
389 return RVAL_IOCTL_DECODED;
390
391 tprintf("{type=");
392 printxval(v4l2_buf_types, reqbufs.type, "V4L2_BUF_TYPE_???");
393 tprints(", memory=");
394 printxval(v4l2_memories, reqbufs.memory, "V4L2_MEMORY_???");
395 tprintf(", count=%u", reqbufs.count);
396
397 return 0;
398 }
399
400 if (!syserror(tcp)) {
401 tprints(" => ");
402
403 if (!umove(tcp, arg, &reqbufs))
404 tprintf("%u", reqbufs.count);
405 else
406 tprints("???");
407 }
408
409 tprints("}");
410
411 return RVAL_IOCTL_DECODED;
412 }
413
414 #include "xlat/v4l2_buf_flags.h"
415
416 static int
print_v4l2_buffer(struct tcb * const tcp,const unsigned int code,const kernel_ulong_t arg)417 print_v4l2_buffer(struct tcb *const tcp, const unsigned int code,
418 const kernel_ulong_t arg)
419 {
420 struct_v4l2_buffer b;
421
422 if (entering(tcp)) {
423 tprints(", ");
424 if (umove_or_printaddr(tcp, arg, &b))
425 return RVAL_IOCTL_DECODED;
426 tprints("{type=");
427 printxval(v4l2_buf_types, b.type, "V4L2_BUF_TYPE_???");
428 if (code != VIDIOC_DQBUF)
429 tprintf(", index=%u", b.index);
430
431 return 0;
432 }
433
434 if (!syserror(tcp) && !umove(tcp, arg, &b)) {
435 if (code == VIDIOC_DQBUF)
436 tprintf(", index=%u", b.index);
437 tprints(", memory=");
438 printxval(v4l2_memories, b.memory, "V4L2_MEMORY_???");
439
440 if (b.memory == V4L2_MEMORY_MMAP) {
441 tprintf(", m.offset=%#x", b.m.offset);
442 } else if (b.memory == V4L2_MEMORY_USERPTR) {
443 tprints(", m.userptr=");
444 printaddr(b.m.userptr);
445 }
446
447 tprintf(", length=%u, bytesused=%u, flags=",
448 b.length, b.bytesused);
449 printflags(v4l2_buf_flags, b.flags, "V4L2_BUF_FLAG_???");
450 if (code == VIDIOC_DQBUF) {
451 tprints(", timestamp = ");
452 MPERS_FUNC_NAME(print_struct_timeval)(&b.timestamp);
453 }
454 tprints(", ...");
455 }
456
457 tprints("}");
458
459 return RVAL_IOCTL_DECODED;
460 }
461
462 static int
print_v4l2_framebuffer(struct tcb * const tcp,const kernel_ulong_t arg)463 print_v4l2_framebuffer(struct tcb *const tcp, const kernel_ulong_t arg)
464 {
465 struct_v4l2_framebuffer b;
466
467 tprints(", ");
468 if (!umove_or_printaddr(tcp, arg, &b)) {
469 tprintf("{capability=%#x, flags=%#x, base=",
470 b.capability, b.flags);
471 printaddr(ptr_to_kulong(b.base));
472 tprints("}");
473 }
474
475 return RVAL_IOCTL_DECODED;
476 }
477
478 static int
print_v4l2_buf_type(struct tcb * const tcp,const kernel_ulong_t arg)479 print_v4l2_buf_type(struct tcb *const tcp, const kernel_ulong_t arg)
480 {
481 int type;
482
483 tprints(", ");
484 if (!umove_or_printaddr(tcp, arg, &type)) {
485 tprints("[");
486 printxval(v4l2_buf_types, type, "V4L2_BUF_TYPE_???");
487 tprints("]");
488 }
489 return RVAL_IOCTL_DECODED;
490 }
491
492 #include "xlat/v4l2_streaming_capabilities.h"
493 #include "xlat/v4l2_capture_modes.h"
494
495 static int
print_v4l2_streamparm(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)496 print_v4l2_streamparm(struct tcb *const tcp, const kernel_ulong_t arg,
497 const bool is_get)
498 {
499 struct v4l2_streamparm s;
500
501 if (entering(tcp)) {
502 tprints(", ");
503 if (umove_or_printaddr(tcp, arg, &s))
504 return RVAL_IOCTL_DECODED;
505 tprints("{type=");
506 printxval(v4l2_buf_types, s.type, "V4L2_BUF_TYPE_???");
507 switch (s.type) {
508 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
509 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
510 if (is_get)
511 return 0;
512 tprints(", ");
513 break;
514 default:
515 tprints("}");
516 return RVAL_IOCTL_DECODED;
517 }
518 } else {
519 if (syserror(tcp) || umove(tcp, arg, &s) < 0) {
520 tprints("}");
521 return RVAL_IOCTL_DECODED;
522 }
523 tprints(is_get ? ", " : " => ");
524 }
525
526 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
527 tprints("parm.capture={capability=");
528 printflags(v4l2_streaming_capabilities,
529 s.parm.capture.capability, "V4L2_CAP_???");
530
531 tprints(", capturemode=");
532 printflags(v4l2_capture_modes,
533 s.parm.capture.capturemode, "V4L2_MODE_???");
534
535 tprintf(", timeperframe=" FMT_FRACT,
536 ARGS_FRACT(s.parm.capture.timeperframe));
537
538 tprintf(", extendedmode=%u, readbuffers=%u}",
539 s.parm.capture.extendedmode,
540 s.parm.capture.readbuffers);
541 } else {
542 tprints("parm.output={capability=");
543 printflags(v4l2_streaming_capabilities,
544 s.parm.output.capability, "V4L2_CAP_???");
545
546 tprintf(", outputmode=%u", s.parm.output.outputmode);
547
548 tprintf(", timeperframe=" FMT_FRACT,
549 ARGS_FRACT(s.parm.output.timeperframe));
550
551 tprintf(", extendedmode=%u, writebuffers=%u}",
552 s.parm.output.extendedmode,
553 s.parm.output.writebuffers);
554 }
555 if (entering(tcp)) {
556 return 0;
557 } else {
558 tprints("}");
559 return RVAL_IOCTL_DECODED;
560 }
561 }
562
563 static int
print_v4l2_standard(struct tcb * const tcp,const kernel_ulong_t arg)564 print_v4l2_standard(struct tcb *const tcp, const kernel_ulong_t arg)
565 {
566 struct_v4l2_standard s;
567
568 if (entering(tcp)) {
569 tprints(", ");
570 if (umove_or_printaddr(tcp, arg, &s))
571 return RVAL_IOCTL_DECODED;
572 tprintf("{index=%u", s.index);
573
574 return 0;
575 }
576
577 if (!syserror(tcp) && !umove(tcp, arg, &s)) {
578 PRINT_FIELD_CSTRING(", ", s, name);
579 tprintf(", frameperiod=" FMT_FRACT,
580 ARGS_FRACT(s.frameperiod));
581 tprintf(", framelines=%d", s.framelines);
582 }
583
584 tprints("}");
585
586 return RVAL_IOCTL_DECODED;
587 }
588
589 #include "xlat/v4l2_input_types.h"
590
591 static int
print_v4l2_input(struct tcb * const tcp,const kernel_ulong_t arg)592 print_v4l2_input(struct tcb *const tcp, const kernel_ulong_t arg)
593 {
594 struct_v4l2_input i;
595
596 if (entering(tcp)) {
597 tprints(", ");
598 if (umove_or_printaddr(tcp, arg, &i))
599 return RVAL_IOCTL_DECODED;
600 tprintf("{index=%u", i.index);
601
602 return 0;
603 }
604
605 if (!syserror(tcp) && !umove(tcp, arg, &i)) {
606 PRINT_FIELD_CSTRING(", ", i, name);
607 tprints(", type=");
608 printxval(v4l2_input_types, i.type, "V4L2_INPUT_TYPE_???");
609 }
610
611 tprints("}");
612
613 return RVAL_IOCTL_DECODED;
614 }
615
616 /*
617 * We include it here and not before print_v4l2_ext_controls as we need
618 * V4L2_CTRL_CLASS_* definitions for V4L2_CID_*_BASE ones.
619 */
620 #include "xlat/v4l2_control_classes.h"
621 #include "xlat/v4l2_control_id_bases.h"
622 #include "xlat/v4l2_control_ids.h"
623
624 static int
print_v4l2_control(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)625 print_v4l2_control(struct tcb *const tcp, const kernel_ulong_t arg,
626 const bool is_get)
627 {
628 struct v4l2_control c;
629
630 if (entering(tcp)) {
631 tprints(", ");
632 if (umove_or_printaddr(tcp, arg, &c))
633 return RVAL_IOCTL_DECODED;
634 tprints("{id=");
635 printxval(v4l2_control_ids, c.id, "V4L2_CID_???");
636 if (!is_get)
637 tprintf(", value=%d", c.value);
638 return 0;
639 }
640
641 if (!syserror(tcp) && !umove(tcp, arg, &c)) {
642 tprints(is_get ? ", " : " => ");
643 tprintf("value=%d", c.value);
644 }
645
646 tprints("}");
647
648 return RVAL_IOCTL_DECODED;
649 }
650
651 #include "xlat/v4l2_tuner_types.h"
652 #include "xlat/v4l2_tuner_capabilities.h"
653 #include "xlat/v4l2_tuner_rxsubchanses.h"
654 #include "xlat/v4l2_tuner_audmodes.h"
655
656 static int
print_v4l2_tuner(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)657 print_v4l2_tuner(struct tcb *const tcp, const kernel_ulong_t arg,
658 const bool is_get)
659 {
660 struct v4l2_tuner c;
661 if (entering(tcp)) {
662 tprints(", ");
663 if (umove_or_printaddr(tcp, arg, &c))
664 return RVAL_IOCTL_DECODED;
665 tprintf("{index=%u", c.index);
666 if (is_get)
667 return 0;
668 tprints(", ");
669 } else {
670 if (syserror(tcp) || umove(tcp, arg, &c) < 0) {
671 tprints("}");
672 return RVAL_IOCTL_DECODED;
673 }
674 tprints(is_get ? ", " : " => ");
675 }
676
677 PRINT_FIELD_CSTRING("", c, name);
678 tprints(", type=");
679 printxval(v4l2_tuner_types, c.type, "V4L2_TUNER_TYPE_???");
680 tprints(", capability=");
681 printxval(v4l2_tuner_capabilities, c.capability,
682 "V4L2_TUNER_CAP_???");
683 tprintf(", rangelow=%u, rangehigh=%u, rxsubchans=",
684 c.rangelow, c.rangehigh);
685 printxval(v4l2_tuner_rxsubchanses, c.rxsubchans,
686 "V4L2_TUNER_SUB_???");
687 tprints(", audmode=");
688 printxval(v4l2_tuner_audmodes, c.audmode,
689 "V4L2_TUNER_MODE_???");
690 tprintf(", signal=%d, afc=%d", c.signal, c.afc);
691
692 if (entering(tcp)) {
693 return 0;
694 } else {
695 tprints("}");
696 return RVAL_IOCTL_DECODED;
697 }
698 }
699
700 #include "xlat/v4l2_control_types.h"
701 #include "xlat/v4l2_control_flags.h"
702
703 static int
print_v4l2_queryctrl(struct tcb * const tcp,const kernel_ulong_t arg)704 print_v4l2_queryctrl(struct tcb *const tcp, const kernel_ulong_t arg)
705 {
706 struct v4l2_queryctrl c;
707
708 if (entering(tcp)) {
709 tprints(", ");
710 if (umove_or_printaddr(tcp, arg, &c))
711 return RVAL_IOCTL_DECODED;
712 tprints("{id=");
713 } else {
714 if (syserror(tcp) || umove(tcp, arg, &c) < 0) {
715 tprints("}");
716 return RVAL_IOCTL_DECODED;
717 }
718 if (get_tcb_priv_ulong(tcp))
719 tprints(" => ");
720 }
721
722 if (entering(tcp) || get_tcb_priv_ulong(tcp)) {
723 #ifdef V4L2_CTRL_FLAG_NEXT_CTRL
724 const unsigned long next = c.id & V4L2_CTRL_FLAG_NEXT_CTRL;
725 set_tcb_priv_ulong(tcp, next);
726 if (next) {
727 print_xlat(V4L2_CTRL_FLAG_NEXT_CTRL);
728 tprints("|");
729 c.id &= ~V4L2_CTRL_FLAG_NEXT_CTRL;
730 }
731 #endif
732 printxval(v4l2_control_ids, c.id, "V4L2_CID_???");
733 }
734
735 if (exiting(tcp)) {
736 tprints(", type=");
737 printxval(v4l2_control_types, c.type, "V4L2_CTRL_TYPE_???");
738 PRINT_FIELD_CSTRING(", ", c, name);
739 tprintf(", minimum=%d, maximum=%d, step=%d"
740 ", default_value=%d, flags=",
741 c.minimum, c.maximum, c.step, c.default_value);
742 printflags(v4l2_control_flags, c.flags, "V4L2_CTRL_FLAG_???");
743 tprints("}");
744 }
745 return entering(tcp) ? 0 : RVAL_IOCTL_DECODED;
746 }
747
748 static int
print_v4l2_cropcap(struct tcb * const tcp,const kernel_ulong_t arg)749 print_v4l2_cropcap(struct tcb *const tcp, const kernel_ulong_t arg)
750 {
751 struct v4l2_cropcap c;
752
753 if (entering(tcp)) {
754 tprints(", ");
755 if (umove_or_printaddr(tcp, arg, &c))
756 return RVAL_IOCTL_DECODED;
757 tprints("{type=");
758 printxval(v4l2_buf_types, c.type, "V4L2_BUF_TYPE_???");
759
760 return 0;
761 }
762
763 if (!syserror(tcp) && !umove(tcp, arg, &c)) {
764 tprintf(", bounds=" FMT_RECT
765 ", defrect=" FMT_RECT
766 ", pixelaspect=" FMT_FRACT,
767 ARGS_RECT(c.bounds),
768 ARGS_RECT(c.defrect),
769 ARGS_FRACT(c.pixelaspect));
770 }
771
772 tprints("}");
773
774 return RVAL_IOCTL_DECODED;
775 }
776
777 static int
print_v4l2_crop(struct tcb * const tcp,const kernel_ulong_t arg,const bool is_get)778 print_v4l2_crop(struct tcb *const tcp, const kernel_ulong_t arg,
779 const bool is_get)
780 {
781 struct v4l2_crop c;
782
783 if (entering(tcp)) {
784 tprints(", ");
785 if (umove_or_printaddr(tcp, arg, &c))
786 return RVAL_IOCTL_DECODED;
787 tprints("{type=");
788 printxval(v4l2_buf_types, c.type, "V4L2_BUF_TYPE_???");
789 if (is_get)
790 return 0;
791 tprintf(", c=" FMT_RECT, ARGS_RECT(c.c));
792 } else {
793 if (!syserror(tcp) && !umove(tcp, arg, &c))
794 tprintf(", c=" FMT_RECT, ARGS_RECT(c.c));
795 }
796
797 tprints("}");
798
799 return RVAL_IOCTL_DECODED;
800 }
801
802 #ifdef VIDIOC_S_EXT_CTRLS
803 static bool
print_v4l2_ext_control(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)804 print_v4l2_ext_control(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
805 {
806 const struct_v4l2_ext_control *p = elem_buf;
807
808 tprints("{id=");
809 printxval(v4l2_control_ids, p->id, "V4L2_CID_???");
810 # if HAVE_DECL_V4L2_CTRL_TYPE_STRING
811 tprintf(", size=%u", p->size);
812 if (p->size > 0) {
813 tprints(", string=");
814 printstrn(tcp, ptr_to_kulong(p->string), p->size);
815 } else
816 # endif
817 tprintf(", value=%d, value64=%" PRId64, p->value, (int64_t) p->value64);
818 tprints("}");
819
820 return true;
821 }
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 tfetch_mem_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, v4l2_pix_fmts);
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, v4l2_pix_fmts);
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 ATTRIBUTE_FALLTHROUGH;
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 ATTRIBUTE_FALLTHROUGH;
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 ATTRIBUTE_FALLTHROUGH;
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