1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
648
649
650
651
652
653
654
655
659
660
661
662
663
664
665
666
667
668
669
670
671
672
674
675
676
677
678
679
680
681
682
687
688
689
690
691
693
694
695
699
700
701
702
703
704
705
706
707
708
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
760
761
762
763
764
769
770
771
777
778
779
780
781
784
785
786
787
788
789
790
791
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
853
854
858
859
863
864
865
866
867
871
872
873
877
878
879
880
881
882
883
884
885
892
893
894
895
896
897
898
905
906
907
908
913
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
966
967
968
969
970
971
974
981
982
983
984
985
986
987
988
989
990
991
992
993
994
998
999
1004
1008
1009
1015
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1074
1075
1076
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1095
1096
1097
1098
1101
1102
1103
1104
1105
1106
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1193
1194
1195
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1252
1253
1254
1255
1259
1260
1261
1262
1263
1264
1265
1266
1267
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1482
1483
1484
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1529
1530
1531
1532
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1673
1674
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1875
1876
1877
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2211
2215
2216
2217
2218
2219
2220
2221
2223
2224
2225
2230
2231
2232
2233
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2309
2312
2313
2314
2317
2318
2322
2323
2334
2335
2336
2337
2338
2339
2340
2351
2352
2361
2365
2366
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2392
2393
2394
2395
2396
2401
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2438
2439
2440
2441
2445
2446
2447
2448
2452
2453
2454
2462
2463
2464
2465
2466
2467
2468
2469
2481
2482
2483
2484
2485
2489
2490
2491
2492
2493
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2577
2578
2579
2580
2581
2582
2583
2584
2586
2587
2592
2593
2598
2599
2600
2601
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2625
2626
2627
2628
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2741
2742
2743
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2762
2763
2764
2765
2766
2772
2773
2774
2775
2776
2777
2778
2779
2780
2782
2785
2788
2791
2794
2797
2798
2799
2800
2801
2802
2807
2808
2809
2810
2811
2812
2813
2814
2818
2819
2824
2825
2826
2827
2832
2836
2837
2838
2839
2840
2841
2842
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2874
2876
2878
2880
2882
2884
2886
2888
2890
2892
2894
2896
2899
2901
2903
2905
2907
2909
2912
2914
2916
2917
2918
2919
2923
2924
/* ... */
#include "libusbi.h"
#include "version.h"
#ifdef __ANDROID__
#include <android/log.h>
#endif
#include <stdio.h>
#include <string.h>
#ifdef HAVE_SYSLOG
#include <syslog.h>
#endif
static const struct libusb_version libusb_version_internal =
{ LIBUSB_MAJOR, LIBUSB_MINOR, LIBUSB_MICRO, LIBUSB_NANO,
LIBUSB_RC, "https://libusb.info" ...};
static struct timespec timestamp_origin;
#if defined(ENABLE_LOGGING) && !defined(USE_SYSTEM_LOGGING_FACILITY)
static libusb_log_cb log_handler;
#endif
struct libusb_context *usbi_default_context;
struct libusb_context *usbi_fallback_context;
static int default_context_refcnt;
#if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING)
static usbi_atomic_t default_debug_level = -1;
#endif
static usbi_mutex_static_t default_context_lock = USBI_MUTEX_INITIALIZER;
static struct usbi_option default_context_options[LIBUSB_OPTION_MAX];
usbi_mutex_static_t active_contexts_lock = USBI_MUTEX_INITIALIZER;
struct list_head active_contexts_list;
/* ... */
/* ... */
/* ... */
/* ... */
/* ... */
/* ... */
/* ... */
#define DISCOVERED_DEVICES_SIZE_STEP 16
static struct discovered_devs *discovered_devs_alloc(void)
{
struct discovered_devs *ret =
malloc(sizeof(*ret) + (sizeof(void *) * DISCOVERED_DEVICES_SIZE_STEP));
if (ret) {
ret->len = 0;
ret->capacity = DISCOVERED_DEVICES_SIZE_STEP;
}if (ret) { ... }
return ret;
}{ ... }
static void discovered_devs_free(struct discovered_devs *discdevs)
{
size_t i;
for (i = 0; i < discdevs->len; i++)
libusb_unref_device(discdevs->devices[i]);
free(discdevs);
}{ ... }
/* ... */
struct discovered_devs *discovered_devs_append(
struct discovered_devs *discdevs, struct libusb_device *dev)
{
size_t len = discdevs->len;
size_t capacity;
struct discovered_devs *new_discdevs;
if (len < discdevs->capacity) {
discdevs->devices[len] = libusb_ref_device(dev);
discdevs->len++;
return discdevs;
}if (len < discdevs->capacity) { ... }
usbi_dbg(DEVICE_CTX(dev), "need to increase capacity");
capacity = discdevs->capacity + DISCOVERED_DEVICES_SIZE_STEP;
/* ... */
new_discdevs = realloc(discdevs,
sizeof(*discdevs) + (sizeof(void *) * capacity));
if (!new_discdevs) {
discovered_devs_free(discdevs);
return NULL;
}if (!new_discdevs) { ... }
discdevs = new_discdevs;
discdevs->capacity = capacity;
discdevs->devices[len] = libusb_ref_device(dev);
discdevs->len++;
return discdevs;
}{ ... }
/* ... */
struct libusb_device *usbi_alloc_device(struct libusb_context *ctx,
unsigned long session_id)
{
size_t priv_size = usbi_backend.device_priv_size;
struct libusb_device *dev = calloc(1, PTR_ALIGN(sizeof(*dev)) + priv_size);
if (!dev)
return NULL;
usbi_atomic_store(&dev->refcnt, 1);
dev->ctx = ctx;
dev->session_data = session_id;
dev->speed = LIBUSB_SPEED_UNKNOWN;
if (!libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG))
usbi_connect_device(dev);
return dev;
}{ ... }
void usbi_connect_device(struct libusb_device *dev)
{
struct libusb_context *ctx = DEVICE_CTX(dev);
usbi_atomic_store(&dev->attached, 1);
usbi_mutex_lock(&dev->ctx->usb_devs_lock);
list_add(&dev->list, &dev->ctx->usb_devs);
usbi_mutex_unlock(&dev->ctx->usb_devs_lock);
usbi_hotplug_notification(ctx, dev, LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED);
}{ ... }
void usbi_disconnect_device(struct libusb_device *dev)
{
struct libusb_context *ctx = DEVICE_CTX(dev);
usbi_atomic_store(&dev->attached, 0);
usbi_mutex_lock(&ctx->usb_devs_lock);
list_del(&dev->list);
usbi_mutex_unlock(&ctx->usb_devs_lock);
usbi_hotplug_notification(ctx, dev, LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT);
}{ ... }
/* ... */
int usbi_sanitize_device(struct libusb_device *dev)
{
uint8_t num_configurations;
if (dev->device_descriptor.bLength != LIBUSB_DT_DEVICE_SIZE ||
dev->device_descriptor.bDescriptorType != LIBUSB_DT_DEVICE) {
usbi_err(DEVICE_CTX(dev), "invalid device descriptor");
return LIBUSB_ERROR_IO;
}if (dev->device_descriptor.bLength != LIBUSB_DT_DEVICE_SIZE || dev->device_descriptor.bDescriptorType != LIBUSB_DT_DEVICE) { ... }
num_configurations = dev->device_descriptor.bNumConfigurations;
if (num_configurations > USB_MAXCONFIG) {
usbi_err(DEVICE_CTX(dev), "too many configurations");
return LIBUSB_ERROR_IO;
}if (num_configurations > USB_MAXCONFIG) { ... } else if (0 == num_configurations) {
usbi_dbg(DEVICE_CTX(dev), "zero configurations, maybe an unauthorized device");
}else if (0 == num_configurations) { ... }
return 0;
}{ ... }
/* ... */
struct libusb_device *usbi_get_device_by_session_id(struct libusb_context *ctx,
unsigned long session_id)
{
struct libusb_device *dev;
struct libusb_device *ret = NULL;
usbi_mutex_lock(&ctx->usb_devs_lock);
for_each_device(ctx, dev) {
if (dev->session_data == session_id) {
ret = libusb_ref_device(dev);
break;
}if (dev->session_data == session_id) { ... }
}for_each_device (ctx, dev) { ... }
usbi_mutex_unlock(&ctx->usb_devs_lock);
return ret;
}{ ... }
/* ... */
ssize_t API_EXPORTED libusb_get_device_list(libusb_context *ctx,
libusb_device ***list)
{
struct discovered_devs *discdevs = discovered_devs_alloc();
struct libusb_device **ret;
int r = 0;
ssize_t i, len;
usbi_dbg(ctx, " ");
if (!discdevs)
return LIBUSB_ERROR_NO_MEM;
ctx = usbi_get_context(ctx);
if (libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) {
struct libusb_device *dev;
if (usbi_backend.hotplug_poll)
usbi_backend.hotplug_poll();
usbi_mutex_lock(&ctx->usb_devs_lock);
for_each_device(ctx, dev) {
discdevs = discovered_devs_append(discdevs, dev);
if (!discdevs) {
r = LIBUSB_ERROR_NO_MEM;
break;
}if (!discdevs) { ... }
}for_each_device (ctx, dev) { ... }
usbi_mutex_unlock(&ctx->usb_devs_lock);
}if (libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) { ... } else {
r = usbi_backend.get_device_list(ctx, &discdevs);
}else { ... }
if (r < 0) {
len = r;
goto out;
}if (r < 0) { ... }
len = (ssize_t)discdevs->len;
ret = calloc((size_t)len + 1, sizeof(struct libusb_device *));
if (!ret) {
len = LIBUSB_ERROR_NO_MEM;
goto out;
}if (!ret) { ... }
ret[len] = NULL;
for (i = 0; i < len; i++) {
struct libusb_device *dev = discdevs->devices[i];
ret[i] = libusb_ref_device(dev);
}for (i = 0; i < len; i++) { ... }
*list = ret;
out:
if (discdevs)
discovered_devs_free(discdevs);
return len;
}libusb_get_device_list (libusb_context *ctx, libusb_device ***list) { ... }
/* ... */
void API_EXPORTED libusb_free_device_list(libusb_device **list,
int unref_devices)
{
if (!list)
return;
if (unref_devices) {
int i = 0;
struct libusb_device *dev;
while ((dev = list[i++]) != NULL)
libusb_unref_device(dev);
}if (unref_devices) { ... }
free(list);
}libusb_free_device_list (libusb_device **list, int unref_devices) { ... }
/* ... */
uint8_t API_EXPORTED libusb_get_bus_number(libusb_device *dev)
{
return dev->bus_number;
}libusb_get_bus_number (libusb_device *dev) { ... }
/* ... */
uint8_t API_EXPORTED libusb_get_port_number(libusb_device *dev)
{
return dev->port_number;
}libusb_get_port_number (libusb_device *dev) { ... }
/* ... */
int API_EXPORTED libusb_get_port_numbers(libusb_device *dev,
uint8_t *port_numbers, int port_numbers_len)
{
int i = port_numbers_len;
struct libusb_context *ctx = DEVICE_CTX(dev);
if (port_numbers_len <= 0)
return LIBUSB_ERROR_INVALID_PARAM;
while((dev) && (dev->port_number != 0)) {
if (--i < 0) {
usbi_warn(ctx, "port numbers array is too small");
return LIBUSB_ERROR_OVERFLOW;
}if (--i < 0) { ... }
port_numbers[i] = dev->port_number;
dev = dev->parent_dev;
}while ((dev) && (dev->port_number != 0)) { ... }
if (i < port_numbers_len)
memmove(port_numbers, &port_numbers[i], port_numbers_len - i);
return port_numbers_len - i;
}libusb_get_port_numbers (libusb_device *dev, uint8_t *port_numbers, int port_numbers_len) { ... }
/* ... */
int API_EXPORTED libusb_get_port_path(libusb_context *ctx, libusb_device *dev,
uint8_t *port_numbers, uint8_t port_numbers_len)
{
UNUSED(ctx);
return libusb_get_port_numbers(dev, port_numbers, port_numbers_len);
}libusb_get_port_path (libusb_context *ctx, libusb_device *dev, uint8_t *port_numbers, uint8_t port_numbers_len) { ... }
/* ... */
DEFAULT_VISIBILITY
libusb_device * LIBUSB_CALL libusb_get_parent(libusb_device *dev)
{
return dev->parent_dev;
}libusb_get_parent (libusb_device *dev) { ... }
/* ... */
uint8_t API_EXPORTED libusb_get_device_address(libusb_device *dev)
{
return dev->device_address;
}libusb_get_device_address (libusb_device *dev) { ... }
/* ... */
int API_EXPORTED libusb_get_device_speed(libusb_device *dev)
{
return dev->speed;
}libusb_get_device_speed (libusb_device *dev) { ... }
static const struct libusb_endpoint_descriptor *find_endpoint(
struct libusb_config_descriptor *config, unsigned char endpoint)
{
int iface_idx;
for (iface_idx = 0; iface_idx < config->bNumInterfaces; iface_idx++) {
const struct libusb_interface *iface = &config->interface[iface_idx];
int altsetting_idx;
for (altsetting_idx = 0; altsetting_idx < iface->num_altsetting;
altsetting_idx++) {
const struct libusb_interface_descriptor *altsetting
= &iface->altsetting[altsetting_idx];
int ep_idx;
for (ep_idx = 0; ep_idx < altsetting->bNumEndpoints; ep_idx++) {
const struct libusb_endpoint_descriptor *ep =
&altsetting->endpoint[ep_idx];
if (ep->bEndpointAddress == endpoint)
return ep;
}for (ep_idx = 0; ep_idx < altsetting->bNumEndpoints; ep_idx++) { ... }
}for (altsetting_idx = 0; altsetting_idx < iface->num_altsetting; altsetting_idx++) { ... }
}for (iface_idx = 0; iface_idx < config->bNumInterfaces; iface_idx++) { ... }
return NULL;
}find_endpoint (struct libusb_config_descriptor *config, unsigned char endpoint) { ... }
/* ... */
int API_EXPORTED libusb_get_max_packet_size(libusb_device *dev,
unsigned char endpoint)
{
struct libusb_config_descriptor *config;
const struct libusb_endpoint_descriptor *ep;
int r;
r = libusb_get_active_config_descriptor(dev, &config);
if (r < 0) {
usbi_err(DEVICE_CTX(dev),
"could not retrieve active config descriptor");
return LIBUSB_ERROR_OTHER;
}if (r < 0) { ... }
ep = find_endpoint(config, endpoint);
if (!ep) {
r = LIBUSB_ERROR_NOT_FOUND;
goto out;
}if (!ep) { ... }
r = ep->wMaxPacketSize;
out:
libusb_free_config_descriptor(config);
return r;
}libusb_get_max_packet_size (libusb_device *dev, unsigned char endpoint) { ... }
static const struct libusb_endpoint_descriptor *find_alt_endpoint(
struct libusb_config_descriptor *config,
int iface_idx, int altsetting_idx, unsigned char endpoint)
{
if (iface_idx >= config->bNumInterfaces) {
return NULL;
}if (iface_idx >= config->bNumInterfaces) { ... }
const struct libusb_interface *iface = &config->interface[iface_idx];
if (altsetting_idx >= iface->num_altsetting) {
return NULL;
}if (altsetting_idx >= iface->num_altsetting) { ... }
const struct libusb_interface_descriptor *altsetting
= &iface->altsetting[altsetting_idx];
int ep_idx;
for (ep_idx = 0; ep_idx < altsetting->bNumEndpoints; ep_idx++) {
const struct libusb_endpoint_descriptor *ep =
&altsetting->endpoint[ep_idx];
if (ep->bEndpointAddress == endpoint)
return ep;
}for (ep_idx = 0; ep_idx < altsetting->bNumEndpoints; ep_idx++) { ... }
return NULL;
}find_alt_endpoint (struct libusb_config_descriptor *config, int iface_idx, int altsetting_idx, unsigned char endpoint) { ... }
static int get_endpoint_max_packet_size(libusb_device *dev,
const struct libusb_endpoint_descriptor *ep)
{
struct libusb_ss_endpoint_companion_descriptor *ss_ep_cmp;
enum libusb_endpoint_transfer_type ep_type;
uint16_t val;
int r = 0;
int speed;
speed = libusb_get_device_speed(dev);
if (speed >= LIBUSB_SPEED_SUPER) {
r = libusb_get_ss_endpoint_companion_descriptor(dev->ctx, ep, &ss_ep_cmp);
if (r == LIBUSB_SUCCESS) {
r = ss_ep_cmp->wBytesPerInterval;
libusb_free_ss_endpoint_companion_descriptor(ss_ep_cmp);
}if (r == LIBUSB_SUCCESS) { ... }
}if (speed >= LIBUSB_SPEED_SUPER) { ... }
if (speed < LIBUSB_SPEED_SUPER || r < 0) {
val = ep->wMaxPacketSize;
ep_type = (enum libusb_endpoint_transfer_type) (ep->bmAttributes & 0x3);
r = val & 0x07ff;
if (ep_type == LIBUSB_ENDPOINT_TRANSFER_TYPE_ISOCHRONOUS
|| ep_type == LIBUSB_ENDPOINT_TRANSFER_TYPE_INTERRUPT)
r *= (1 + ((val >> 11) & 3));
}if (speed < LIBUSB_SPEED_SUPER || r < 0) { ... }
return r;
}get_endpoint_max_packet_size (libusb_device *dev, const struct libusb_endpoint_descriptor *ep) { ... }
/* ... */
int API_EXPORTED libusb_get_max_iso_packet_size(libusb_device *dev,
unsigned char endpoint)
{
struct libusb_config_descriptor *config;
const struct libusb_endpoint_descriptor *ep;
int r;
r = libusb_get_active_config_descriptor(dev, &config);
if (r < 0) {
usbi_err(DEVICE_CTX(dev),
"could not retrieve active config descriptor");
return LIBUSB_ERROR_OTHER;
}if (r < 0) { ... }
ep = find_endpoint(config, endpoint);
if (!ep) {
r = LIBUSB_ERROR_NOT_FOUND;
goto out;
}if (!ep) { ... }
r = get_endpoint_max_packet_size(dev, ep);
out:
libusb_free_config_descriptor(config);
return r;
}libusb_get_max_iso_packet_size (libusb_device *dev, unsigned char endpoint) { ... }
/* ... */
int API_EXPORTED libusb_get_max_alt_packet_size(libusb_device *dev,
int interface_number, int alternate_setting, unsigned char endpoint)
{
struct libusb_config_descriptor *config;
const struct libusb_endpoint_descriptor *ep;
int r;
r = libusb_get_active_config_descriptor(dev, &config);
if (r < 0) {
usbi_err(DEVICE_CTX(dev),
"could not retrieve active config descriptor");
return LIBUSB_ERROR_OTHER;
}if (r < 0) { ... }
ep = find_alt_endpoint(config, interface_number,
alternate_setting, endpoint);
if (!ep) {
r = LIBUSB_ERROR_NOT_FOUND;
goto out;
}if (!ep) { ... }
r = get_endpoint_max_packet_size(dev, ep);
out:
libusb_free_config_descriptor(config);
return r;
}libusb_get_max_alt_packet_size (libusb_device *dev, int interface_number, int alternate_setting, unsigned char endpoint) { ... }
/* ... */
DEFAULT_VISIBILITY
libusb_device * LIBUSB_CALL libusb_ref_device(libusb_device *dev)
{
long refcnt;
refcnt = usbi_atomic_inc(&dev->refcnt);
assert(refcnt >= 2);
return dev;
}libusb_ref_device (libusb_device *dev) { ... }
/* ... */
void API_EXPORTED libusb_unref_device(libusb_device *dev)
{
long refcnt;
if (!dev)
return;
refcnt = usbi_atomic_dec(&dev->refcnt);
assert(refcnt >= 0);
if (refcnt == 0) {
usbi_dbg(DEVICE_CTX(dev), "destroy device %d.%d", dev->bus_number, dev->device_address);
libusb_unref_device(dev->parent_dev);
if (usbi_backend.destroy_device)
usbi_backend.destroy_device(dev);
if (!libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) {
usbi_disconnect_device(dev);
}if (!libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) { ... }
free(dev);
}if (refcnt == 0) { ... }
}libusb_unref_device (libusb_device *dev) { ... }
/* ... */
int API_EXPORTED libusb_wrap_sys_device(libusb_context *ctx, intptr_t sys_dev,
libusb_device_handle **dev_handle)
{
struct libusb_device_handle *_dev_handle;
size_t priv_size = usbi_backend.device_handle_priv_size;
int r;
usbi_dbg(ctx, "wrap_sys_device 0x%" PRIxPTR, (uintptr_t)sys_dev);
ctx = usbi_get_context(ctx);
if (!usbi_backend.wrap_sys_device)
return LIBUSB_ERROR_NOT_SUPPORTED;
_dev_handle = calloc(1, PTR_ALIGN(sizeof(*_dev_handle)) + priv_size);
if (!_dev_handle)
return LIBUSB_ERROR_NO_MEM;
usbi_mutex_init(&_dev_handle->lock);
r = usbi_backend.wrap_sys_device(ctx, _dev_handle, sys_dev);
if (r < 0) {
usbi_dbg(ctx, "wrap_sys_device 0x%" PRIxPTR " returns %d", (uintptr_t)sys_dev, r);
usbi_mutex_destroy(&_dev_handle->lock);
free(_dev_handle);
return r;
}if (r < 0) { ... }
usbi_mutex_lock(&ctx->open_devs_lock);
list_add(&_dev_handle->list, &ctx->open_devs);
usbi_mutex_unlock(&ctx->open_devs_lock);
*dev_handle = _dev_handle;
return 0;
}libusb_wrap_sys_device (libusb_context *ctx, intptr_t sys_dev, libusb_device_handle **dev_handle) { ... }
/* ... */
int API_EXPORTED libusb_open(libusb_device *dev,
libusb_device_handle **dev_handle)
{
struct libusb_context *ctx = DEVICE_CTX(dev);
struct libusb_device_handle *_dev_handle;
size_t priv_size = usbi_backend.device_handle_priv_size;
int r;
usbi_dbg(DEVICE_CTX(dev), "open %d.%d", dev->bus_number, dev->device_address);
if (!usbi_atomic_load(&dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
_dev_handle = calloc(1, PTR_ALIGN(sizeof(*_dev_handle)) + priv_size);
if (!_dev_handle)
return LIBUSB_ERROR_NO_MEM;
usbi_mutex_init(&_dev_handle->lock);
_dev_handle->dev = libusb_ref_device(dev);
r = usbi_backend.open(_dev_handle);
if (r < 0) {
usbi_dbg(DEVICE_CTX(dev), "open %d.%d returns %d", dev->bus_number, dev->device_address, r);
libusb_unref_device(dev);
usbi_mutex_destroy(&_dev_handle->lock);
free(_dev_handle);
return r;
}if (r < 0) { ... }
usbi_mutex_lock(&ctx->open_devs_lock);
list_add(&_dev_handle->list, &ctx->open_devs);
usbi_mutex_unlock(&ctx->open_devs_lock);
*dev_handle = _dev_handle;
return 0;
}libusb_open (libusb_device *dev, libusb_device_handle **dev_handle) { ... }
/* ... */
DEFAULT_VISIBILITY
libusb_device_handle * LIBUSB_CALL libusb_open_device_with_vid_pid(
libusb_context *ctx, uint16_t vendor_id, uint16_t product_id)
{
struct libusb_device **devs;
struct libusb_device *found = NULL;
struct libusb_device *dev;
struct libusb_device_handle *dev_handle = NULL;
size_t i = 0;
int r;
if (libusb_get_device_list(ctx, &devs) < 0)
return NULL;
while ((dev = devs[i++]) != NULL) {
struct libusb_device_descriptor desc;
r = libusb_get_device_descriptor(dev, &desc);
if (r < 0)
goto out;
if (desc.idVendor == vendor_id && desc.idProduct == product_id) {
found = dev;
break;
}if (desc.idVendor == vendor_id && desc.idProduct == product_id) { ... }
}while ((dev = devs[i++]) != NULL) { ... }
if (found) {
r = libusb_open(found, &dev_handle);
if (r < 0)
dev_handle = NULL;
}if (found) { ... }
out:
libusb_free_device_list(devs, 1);
return dev_handle;
}libusb_open_device_with_vid_pid (libusb_context *ctx, uint16_t vendor_id, uint16_t product_id) { ... }
static void do_close(struct libusb_context *ctx,
struct libusb_device_handle *dev_handle)
{
struct usbi_transfer *itransfer;
struct usbi_transfer *tmp;
usbi_mutex_lock(&ctx->flying_transfers_lock);
for_each_transfer_safe(ctx, itransfer, tmp) {
struct libusb_transfer *transfer =
USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
uint32_t state_flags;
if (transfer->dev_handle != dev_handle)
continue;
usbi_mutex_lock(&itransfer->lock);
state_flags = itransfer->state_flags;
usbi_mutex_unlock(&itransfer->lock);
if (!(state_flags & USBI_TRANSFER_DEVICE_DISAPPEARED)) {
usbi_err(ctx, "Device handle closed while transfer was still being processed, but the device is still connected as far as we know");
if (state_flags & USBI_TRANSFER_CANCELLING)
usbi_warn(ctx, "A cancellation for an in-flight transfer hasn't completed but closing the device handle");
else
usbi_err(ctx, "A cancellation hasn't even been scheduled on the transfer for which the device is closing");
}if (!(state_flags & USBI_TRANSFER_DEVICE_DISAPPEARED)) { ... }
/* ... */
list_del(&itransfer->list);
transfer->dev_handle = NULL;
/* ... */
usbi_dbg(ctx, "Removed transfer %p from the in-flight list because device handle %p closed",
(void *) transfer, (void *) dev_handle);
}for_each_transfer_safe (ctx, itransfer, tmp) { ... }
usbi_mutex_unlock(&ctx->flying_transfers_lock);
usbi_mutex_lock(&ctx->open_devs_lock);
list_del(&dev_handle->list);
usbi_mutex_unlock(&ctx->open_devs_lock);
usbi_backend.close(dev_handle);
libusb_unref_device(dev_handle->dev);
usbi_mutex_destroy(&dev_handle->lock);
free(dev_handle);
}do_close (struct libusb_context *ctx, struct libusb_device_handle *dev_handle) { ... }
/* ... */
void API_EXPORTED libusb_close(libusb_device_handle *dev_handle)
{
struct libusb_context *ctx;
unsigned int event_flags;
int handling_events;
if (!dev_handle)
return;
ctx = HANDLE_CTX(dev_handle);
usbi_dbg(ctx, " ");
handling_events = usbi_handling_events(ctx);
/* ... */
if (!handling_events) {
/* ... */
usbi_mutex_lock(&ctx->event_data_lock);
event_flags = ctx->event_flags;
if (!ctx->device_close++)
ctx->event_flags |= USBI_EVENT_DEVICE_CLOSE;
if (!event_flags)
usbi_signal_event(&ctx->event);
usbi_mutex_unlock(&ctx->event_data_lock);
libusb_lock_events(ctx);
}if (!handling_events) { ... }
do_close(ctx, dev_handle);
if (!handling_events) {
/* ... */
usbi_mutex_lock(&ctx->event_data_lock);
if (!--ctx->device_close)
ctx->event_flags &= ~USBI_EVENT_DEVICE_CLOSE;
if (!ctx->event_flags)
usbi_clear_event(&ctx->event);
usbi_mutex_unlock(&ctx->event_data_lock);
libusb_unlock_events(ctx);
}if (!handling_events) { ... }
}libusb_close (libusb_device_handle *dev_handle) { ... }
/* ... */
DEFAULT_VISIBILITY
libusb_device * LIBUSB_CALL libusb_get_device(libusb_device_handle *dev_handle)
{
return dev_handle->dev;
}libusb_get_device (libusb_device_handle *dev_handle) { ... }
/* ... */
int API_EXPORTED libusb_get_configuration(libusb_device_handle *dev_handle,
int *config)
{
int r = LIBUSB_ERROR_NOT_SUPPORTED;
uint8_t tmp = 0;
struct libusb_context *ctx = HANDLE_CTX(dev_handle);
usbi_dbg(ctx, " ");
if (usbi_backend.get_configuration)
r = usbi_backend.get_configuration(dev_handle, &tmp);
if (r == LIBUSB_ERROR_NOT_SUPPORTED) {
usbi_dbg(ctx, "falling back to control message");
r = libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_IN,
LIBUSB_REQUEST_GET_CONFIGURATION, 0, 0, &tmp, 1, 1000);
if (r == 1) {
r = 0;
}if (r == 1) { ... } else if (r == 0) {
usbi_err(ctx, "zero bytes returned in ctrl transfer?");
r = LIBUSB_ERROR_IO;
}else if (r == 0) { ... } else {
usbi_dbg(ctx, "control failed, error %d", r);
}else { ... }
}if (r == LIBUSB_ERROR_NOT_SUPPORTED) { ... }
if (r == 0) {
usbi_dbg(ctx, "active config %u", tmp);
*config = (int)tmp;
}if (r == 0) { ... }
return r;
}libusb_get_configuration (libusb_device_handle *dev_handle, int *config) { ... }
/* ... */
int API_EXPORTED libusb_set_configuration(libusb_device_handle *dev_handle,
int configuration)
{
usbi_dbg(HANDLE_CTX(dev_handle), "configuration %d", configuration);
if (configuration < -1 || configuration > (int)UINT8_MAX)
return LIBUSB_ERROR_INVALID_PARAM;
return usbi_backend.set_configuration(dev_handle, configuration);
}libusb_set_configuration (libusb_device_handle *dev_handle, int configuration) { ... }
/* ... */
int API_EXPORTED libusb_claim_interface(libusb_device_handle *dev_handle,
int interface_number)
{
int r = 0;
usbi_dbg(HANDLE_CTX(dev_handle), "interface %d", interface_number);
if (interface_number < 0 || interface_number >= USB_MAXINTERFACES)
return LIBUSB_ERROR_INVALID_PARAM;
if (!usbi_atomic_load(&dev_handle->dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
usbi_mutex_lock(&dev_handle->lock);
if (dev_handle->claimed_interfaces & (1U << interface_number))
goto out;
r = usbi_backend.claim_interface(dev_handle, (uint8_t)interface_number);
if (r == 0)
dev_handle->claimed_interfaces |= 1U << interface_number;
out:
usbi_mutex_unlock(&dev_handle->lock);
return r;
}libusb_claim_interface (libusb_device_handle *dev_handle, int interface_number) { ... }
/* ... */
int API_EXPORTED libusb_release_interface(libusb_device_handle *dev_handle,
int interface_number)
{
int r;
usbi_dbg(HANDLE_CTX(dev_handle), "interface %d", interface_number);
if (interface_number < 0 || interface_number >= USB_MAXINTERFACES)
return LIBUSB_ERROR_INVALID_PARAM;
usbi_mutex_lock(&dev_handle->lock);
if (!(dev_handle->claimed_interfaces & (1U << interface_number))) {
r = LIBUSB_ERROR_NOT_FOUND;
goto out;
}if (!(dev_handle->claimed_interfaces & (1U << interface_number))) { ... }
r = usbi_backend.release_interface(dev_handle, (uint8_t)interface_number);
if (r == 0)
dev_handle->claimed_interfaces &= ~(1U << interface_number);
out:
usbi_mutex_unlock(&dev_handle->lock);
return r;
}libusb_release_interface (libusb_device_handle *dev_handle, int interface_number) { ... }
/* ... */
int API_EXPORTED libusb_set_interface_alt_setting(libusb_device_handle *dev_handle,
int interface_number, int alternate_setting)
{
usbi_dbg(HANDLE_CTX(dev_handle), "interface %d altsetting %d",
interface_number, alternate_setting);
if (interface_number < 0 || interface_number >= USB_MAXINTERFACES)
return LIBUSB_ERROR_INVALID_PARAM;
if (alternate_setting < 0 || alternate_setting > (int)UINT8_MAX)
return LIBUSB_ERROR_INVALID_PARAM;
if (!usbi_atomic_load(&dev_handle->dev->attached)) {
return LIBUSB_ERROR_NO_DEVICE;
}if (!usbi_atomic_load(&dev_handle->dev->attached)) { ... }
usbi_mutex_lock(&dev_handle->lock);
if (!(dev_handle->claimed_interfaces & (1U << interface_number))) {
usbi_mutex_unlock(&dev_handle->lock);
return LIBUSB_ERROR_NOT_FOUND;
}if (!(dev_handle->claimed_interfaces & (1U << interface_number))) { ... }
usbi_mutex_unlock(&dev_handle->lock);
return usbi_backend.set_interface_altsetting(dev_handle,
(uint8_t)interface_number, (uint8_t)alternate_setting);
}libusb_set_interface_alt_setting (libusb_device_handle *dev_handle, int interface_number, int alternate_setting) { ... }
/* ... */
int API_EXPORTED libusb_clear_halt(libusb_device_handle *dev_handle,
unsigned char endpoint)
{
usbi_dbg(HANDLE_CTX(dev_handle), "endpoint 0x%x", endpoint);
if (!usbi_atomic_load(&dev_handle->dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
return usbi_backend.clear_halt(dev_handle, endpoint);
}libusb_clear_halt (libusb_device_handle *dev_handle, unsigned char endpoint) { ... }
/* ... */
int API_EXPORTED libusb_reset_device(libusb_device_handle *dev_handle)
{
usbi_dbg(HANDLE_CTX(dev_handle), " ");
if (!usbi_atomic_load(&dev_handle->dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
if (usbi_backend.reset_device)
return usbi_backend.reset_device(dev_handle);
else
return LIBUSB_ERROR_NOT_SUPPORTED;
}libusb_reset_device (libusb_device_handle *dev_handle) { ... }
/* ... */
int API_EXPORTED libusb_alloc_streams(libusb_device_handle *dev_handle,
uint32_t num_streams, unsigned char *endpoints, int num_endpoints)
{
usbi_dbg(HANDLE_CTX(dev_handle), "streams %u eps %d", (unsigned)num_streams, num_endpoints);
if (!num_streams || !endpoints || num_endpoints <= 0)
return LIBUSB_ERROR_INVALID_PARAM;
if (!usbi_atomic_load(&dev_handle->dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
if (usbi_backend.alloc_streams)
return usbi_backend.alloc_streams(dev_handle, num_streams, endpoints,
num_endpoints);
else
return LIBUSB_ERROR_NOT_SUPPORTED;
}libusb_alloc_streams (libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints, int num_endpoints) { ... }
/* ... */
int API_EXPORTED libusb_free_streams(libusb_device_handle *dev_handle,
unsigned char *endpoints, int num_endpoints)
{
usbi_dbg(HANDLE_CTX(dev_handle), "eps %d", num_endpoints);
if (!endpoints || num_endpoints <= 0)
return LIBUSB_ERROR_INVALID_PARAM;
if (!usbi_atomic_load(&dev_handle->dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
if (usbi_backend.free_streams)
return usbi_backend.free_streams(dev_handle, endpoints,
num_endpoints);
else
return LIBUSB_ERROR_NOT_SUPPORTED;
}libusb_free_streams (libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints) { ... }
/* ... */
DEFAULT_VISIBILITY
unsigned char * LIBUSB_CALL libusb_dev_mem_alloc(libusb_device_handle *dev_handle,
size_t length)
{
if (!usbi_atomic_load(&dev_handle->dev->attached))
return NULL;
if (usbi_backend.dev_mem_alloc)
return usbi_backend.dev_mem_alloc(dev_handle, length);
else
return NULL;
}libusb_dev_mem_alloc (libusb_device_handle *dev_handle, size_t length) { ... }
/* ... */
int API_EXPORTED libusb_dev_mem_free(libusb_device_handle *dev_handle,
unsigned char *buffer, size_t length)
{
if (usbi_backend.dev_mem_free)
return usbi_backend.dev_mem_free(dev_handle, buffer, length);
else
return LIBUSB_ERROR_NOT_SUPPORTED;
}libusb_dev_mem_free (libusb_device_handle *dev_handle, unsigned char *buffer, size_t length) { ... }
/* ... */
int API_EXPORTED libusb_kernel_driver_active(libusb_device_handle *dev_handle,
int interface_number)
{
usbi_dbg(HANDLE_CTX(dev_handle), "interface %d", interface_number);
if (interface_number < 0 || interface_number >= USB_MAXINTERFACES)
return LIBUSB_ERROR_INVALID_PARAM;
if (!usbi_atomic_load(&dev_handle->dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
if (usbi_backend.kernel_driver_active)
return usbi_backend.kernel_driver_active(dev_handle, (uint8_t)interface_number);
else
return LIBUSB_ERROR_NOT_SUPPORTED;
}libusb_kernel_driver_active (libusb_device_handle *dev_handle, int interface_number) { ... }
/* ... */
int API_EXPORTED libusb_detach_kernel_driver(libusb_device_handle *dev_handle,
int interface_number)
{
usbi_dbg(HANDLE_CTX(dev_handle), "interface %d", interface_number);
if (interface_number < 0 || interface_number >= USB_MAXINTERFACES)
return LIBUSB_ERROR_INVALID_PARAM;
if (!usbi_atomic_load(&dev_handle->dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
if (usbi_backend.detach_kernel_driver)
return usbi_backend.detach_kernel_driver(dev_handle, (uint8_t)interface_number);
else
return LIBUSB_ERROR_NOT_SUPPORTED;
}libusb_detach_kernel_driver (libusb_device_handle *dev_handle, int interface_number) { ... }
/* ... */
int API_EXPORTED libusb_attach_kernel_driver(libusb_device_handle *dev_handle,
int interface_number)
{
usbi_dbg(HANDLE_CTX(dev_handle), "interface %d", interface_number);
if (interface_number < 0 || interface_number >= USB_MAXINTERFACES)
return LIBUSB_ERROR_INVALID_PARAM;
if (!usbi_atomic_load(&dev_handle->dev->attached))
return LIBUSB_ERROR_NO_DEVICE;
if (usbi_backend.attach_kernel_driver)
return usbi_backend.attach_kernel_driver(dev_handle, (uint8_t)interface_number);
else
return LIBUSB_ERROR_NOT_SUPPORTED;
}libusb_attach_kernel_driver (libusb_device_handle *dev_handle, int interface_number) { ... }
/* ... */
int API_EXPORTED libusb_set_auto_detach_kernel_driver(
libusb_device_handle *dev_handle, int enable)
{
if (!(usbi_backend.caps & USBI_CAP_SUPPORTS_DETACH_KERNEL_DRIVER))
return LIBUSB_ERROR_NOT_SUPPORTED;
dev_handle->auto_detach_kernel_driver = enable;
return LIBUSB_SUCCESS;
}libusb_set_auto_detach_kernel_driver (libusb_device_handle *dev_handle, int enable) { ... }
/* ... */
void API_EXPORTED libusb_set_debug(libusb_context *ctx, int level)
{
libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, level);
}libusb_set_debug (libusb_context *ctx, int level) { ... }
static void libusb_set_log_cb_internal(libusb_context *ctx, libusb_log_cb cb,
int mode)
{
#if defined(ENABLE_LOGGING) && (!defined(ENABLE_DEBUG_LOGGING) || !defined(USE_SYSTEM_LOGGING_FACILITY))
#if !defined(USE_SYSTEM_LOGGING_FACILITY)
if (mode & LIBUSB_LOG_CB_GLOBAL)
log_handler = cb;/* ... */
#endif
#if !defined(ENABLE_DEBUG_LOGGING)
if (mode & LIBUSB_LOG_CB_CONTEXT) {
ctx = usbi_get_context(ctx);
ctx->log_handler = cb;
}if (mode & LIBUSB_LOG_CB_CONTEXT) { ... }
/* ... */#else
UNUSED(ctx);
#endif/* ... */
#else
UNUSED(ctx);
UNUSED(cb);
UNUSED(mode);/* ... */
#endif
}libusb_set_log_cb_internal (libusb_context *ctx, libusb_log_cb cb, int mode) { ... }
/* ... */
void API_EXPORTED libusb_set_log_cb(libusb_context *ctx, libusb_log_cb cb,
int mode)
{
libusb_set_log_cb_internal(ctx, cb, mode);
}libusb_set_log_cb (libusb_context *ctx, libusb_log_cb cb, int mode) { ... }
/* ... */
int API_EXPORTEDV libusb_set_option(libusb_context *ctx,
enum libusb_option option, ...)
{
int arg = 0, r = LIBUSB_SUCCESS;
libusb_log_cb log_cb = NULL;
va_list ap;
#if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING)
int is_default_context = (NULL == ctx);
#endif
va_start(ap, option);
if (LIBUSB_OPTION_LOG_LEVEL == option) {
arg = va_arg(ap, int);
if (arg < LIBUSB_LOG_LEVEL_NONE || arg > LIBUSB_LOG_LEVEL_DEBUG) {
r = LIBUSB_ERROR_INVALID_PARAM;
}if (arg < LIBUSB_LOG_LEVEL_NONE || arg > LIBUSB_LOG_LEVEL_DEBUG) { ... }
}if (LIBUSB_OPTION_LOG_LEVEL == option) { ... }
if (LIBUSB_OPTION_LOG_CB == option) {
log_cb = (libusb_log_cb) va_arg(ap, libusb_log_cb);
}if (LIBUSB_OPTION_LOG_CB == option) { ... }
do {
if (LIBUSB_SUCCESS != r) {
break;
}if (LIBUSB_SUCCESS != r) { ... }
if (option >= LIBUSB_OPTION_MAX) {
r = LIBUSB_ERROR_INVALID_PARAM;
break;
}if (option >= LIBUSB_OPTION_MAX) { ... }
if (NULL == ctx) {
usbi_mutex_static_lock(&default_context_lock);
default_context_options[option].is_set = 1;
if (LIBUSB_OPTION_LOG_LEVEL == option) {
default_context_options[option].arg.ival = arg;
}if (LIBUSB_OPTION_LOG_LEVEL == option) { ... } else if (LIBUSB_OPTION_LOG_CB == option) {
default_context_options[option].arg.log_cbval = log_cb;
libusb_set_log_cb_internal(NULL, log_cb, LIBUSB_LOG_CB_GLOBAL);
}else if (LIBUSB_OPTION_LOG_CB == option) { ... }
usbi_mutex_static_unlock(&default_context_lock);
}if (NULL == ctx) { ... }
ctx = usbi_get_context(ctx);
if (NULL == ctx)
break;
switch (option) {
case LIBUSB_OPTION_LOG_LEVEL:
#if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING)
if (!ctx->debug_fixed) {
ctx->debug = (enum libusb_log_level)arg;
if (is_default_context)
usbi_atomic_store(&default_debug_level, CLAMP(arg, LIBUSB_LOG_LEVEL_NONE, LIBUSB_LOG_LEVEL_DEBUG));
}if (!ctx->debug_fixed) { ... }
/* ... */#endif
break;
case LIBUSB_OPTION_LOG_LEVEL:
case LIBUSB_OPTION_USE_USBDK:
case LIBUSB_OPTION_NO_DEVICE_DISCOVERY:
if (usbi_backend.set_option) {
r = usbi_backend.set_option(ctx, option, ap);
break;
}if (usbi_backend.set_option) { ... }
r = LIBUSB_ERROR_NOT_SUPPORTED;
break;
case LIBUSB_OPTION_NO_DEVICE_DISCOVERY:
case LIBUSB_OPTION_LOG_CB:
libusb_set_log_cb_internal(ctx, log_cb, LIBUSB_LOG_CB_CONTEXT);
break;
case LIBUSB_OPTION_LOG_CB:
case LIBUSB_OPTION_MAX:
default:
r = LIBUSB_ERROR_INVALID_PARAM;default
}switch (option) { ... }
...} while (0);
va_end(ap);
return r;
}libusb_set_option (libusb_context *ctx, enum libusb_option option, ...) { ... }
#if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING)
/* ... */
static enum libusb_log_level get_env_debug_level(void)
{
const char *dbg = getenv("LIBUSB_DEBUG");
enum libusb_log_level level;
if (dbg) {
int dbg_level = atoi(dbg);
dbg_level = CLAMP(dbg_level, LIBUSB_LOG_LEVEL_NONE, LIBUSB_LOG_LEVEL_DEBUG);
level = (enum libusb_log_level)dbg_level;
}if (dbg) { ... } else {
level = LIBUSB_LOG_LEVEL_NONE;
}else { ... }
return level;
}get_env_debug_level (void) { ... }
/* ... */#endif
/* ... */
int API_EXPORTED libusb_init(libusb_context **ctx)
{
return libusb_init_context(ctx, NULL, 0);
}libusb_init (libusb_context **ctx) { ... }
/* ... */
int API_EXPORTED libusb_init_context(libusb_context **ctx, const struct libusb_init_option options[], int num_options)
{
size_t priv_size = usbi_backend.context_priv_size;
struct libusb_context *_ctx;
int r;
usbi_mutex_static_lock(&default_context_lock);
if (!ctx && default_context_refcnt > 0) {
usbi_dbg(usbi_default_context, "reusing default context");
default_context_refcnt++;
usbi_mutex_static_unlock(&default_context_lock);
return 0;
}if (!ctx && default_context_refcnt > 0) { ... }
usbi_mutex_static_lock(&active_contexts_lock);
if (!active_contexts_list.next) {
list_init(&active_contexts_list);
usbi_get_monotonic_time(×tamp_origin);
}if (!active_contexts_list.next) { ... }
usbi_mutex_static_unlock(&active_contexts_lock);
_ctx = calloc(1, PTR_ALIGN(sizeof(*_ctx)) + priv_size);
if (!_ctx) {
usbi_mutex_static_unlock(&default_context_lock);
return LIBUSB_ERROR_NO_MEM;
}if (!_ctx) { ... }
#if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING)
_ctx->debug = LIBUSB_LOG_LEVEL_NONE;
if (getenv("LIBUSB_DEBUG")) {
_ctx->debug = get_env_debug_level();
_ctx->debug_fixed = 1;
}if (getenv("LIBUSB_DEBUG")) { ... } else if (default_context_options[LIBUSB_OPTION_LOG_LEVEL].is_set) {
_ctx->debug = default_context_options[LIBUSB_OPTION_LOG_LEVEL].arg.ival;
}else if (default_context_options[LIBUSB_OPTION_LOG_LEVEL].is_set) { ... }
/* ... */#endif
usbi_mutex_init(&_ctx->usb_devs_lock);
usbi_mutex_init(&_ctx->open_devs_lock);
list_init(&_ctx->usb_devs);
list_init(&_ctx->open_devs);
for (enum libusb_option option = 0 ; option < LIBUSB_OPTION_MAX ; option++) {
if (LIBUSB_OPTION_LOG_LEVEL == option || !default_context_options[option].is_set) {
continue;
}if (LIBUSB_OPTION_LOG_LEVEL == option || !default_context_options[option].is_set) { ... }
if (LIBUSB_OPTION_LOG_CB != option) {
r = libusb_set_option(_ctx, option);
}if (LIBUSB_OPTION_LOG_CB != option) { ... } else {
r = libusb_set_option(_ctx, option, default_context_options[option].arg.log_cbval);
}else { ... }
if (LIBUSB_SUCCESS != r)
goto err_free_ctx;
}for (enum libusb_option option = 0 ; option < LIBUSB_OPTION_MAX ; option++) { ... }
for (int i = 0 ; i < num_options ; ++i) {
switch(options[i].option) {
case LIBUSB_OPTION_LOG_CB:
r = libusb_set_option(_ctx, options[i].option, options[i].value.log_cbval);
break;
case LIBUSB_OPTION_LOG_CB:
case LIBUSB_OPTION_LOG_LEVEL:
case LIBUSB_OPTION_USE_USBDK:
case LIBUSB_OPTION_NO_DEVICE_DISCOVERY:
case LIBUSB_OPTION_MAX:
default:
r = libusb_set_option(_ctx, options[i].option, options[i].value.ival);default
}switch (options[i].option) { ... }
if (LIBUSB_SUCCESS != r)
goto err_free_ctx;
}for (int i = 0 ; i < num_options ; ++i) { ... }
if (!ctx) {
usbi_default_context = _ctx;
default_context_refcnt = 1;
#if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING)
usbi_atomic_store(&default_debug_level, _ctx->debug);
#endif
usbi_dbg(usbi_default_context, "created default context");
}if (!ctx) { ... }
usbi_dbg(_ctx, "libusb v%u.%u.%u.%u%s", libusb_version_internal.major, libusb_version_internal.minor,
libusb_version_internal.micro, libusb_version_internal.nano, libusb_version_internal.rc);
r = usbi_io_init(_ctx);
if (r < 0)
goto err_free_ctx;
usbi_mutex_static_lock(&active_contexts_lock);
list_add(&_ctx->list, &active_contexts_list);
usbi_mutex_static_unlock(&active_contexts_lock);
if (usbi_backend.init) {
r = usbi_backend.init(_ctx);
if (r)
goto err_io_exit;
}if (usbi_backend.init) { ... }
usbi_hotplug_init(_ctx);
if (ctx) {
*ctx = _ctx;
if (!usbi_fallback_context) {
#if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING)
if (usbi_atomic_load(&default_debug_level) == -1)
usbi_atomic_store(&default_debug_level, _ctx->debug);/* ... */
#endif
usbi_fallback_context = _ctx;
usbi_dbg(usbi_fallback_context, "installing new context as implicit default");
}if (!usbi_fallback_context) { ... }
}if (ctx) { ... }
usbi_mutex_static_unlock(&default_context_lock);
return 0;
err_io_exit:
usbi_mutex_static_lock(&active_contexts_lock);
list_del(&_ctx->list);
usbi_mutex_static_unlock(&active_contexts_lock);
usbi_hotplug_exit(_ctx);
usbi_io_exit(_ctx);
err_free_ctx:
if (!ctx) {
usbi_default_context = NULL;
default_context_refcnt = 0;
}if (!ctx) { ... }
usbi_mutex_destroy(&_ctx->open_devs_lock);
usbi_mutex_destroy(&_ctx->usb_devs_lock);
free(_ctx);
usbi_mutex_static_unlock(&default_context_lock);
return r;
}libusb_init_context (libusb_context **ctx, const struct libusb_init_option options[], int num_options) { ... }
/* ... */
void API_EXPORTED libusb_exit(libusb_context *ctx)
{
struct libusb_context *_ctx;
struct libusb_device *dev;
usbi_mutex_static_lock(&default_context_lock);
/* ... */
if (!ctx) {
if (!usbi_default_context) {
usbi_dbg(ctx, "no default context, not initialized?");
usbi_mutex_static_unlock(&default_context_lock);
return;
}if (!usbi_default_context) { ... }
if (--default_context_refcnt > 0) {
usbi_dbg(ctx, "not destroying default context");
usbi_mutex_static_unlock(&default_context_lock);
return;
}if (--default_context_refcnt > 0) { ... }
usbi_dbg(ctx, "destroying default context");
_ctx = usbi_default_context;
}if (!ctx) { ... } else {
usbi_dbg(ctx, " ");
_ctx = ctx;
}else { ... }
usbi_mutex_static_lock(&active_contexts_lock);
list_del(&_ctx->list);
usbi_mutex_static_unlock(&active_contexts_lock);
usbi_hotplug_exit(_ctx);
if (usbi_backend.exit)
usbi_backend.exit(_ctx);
if (!ctx)
usbi_default_context = NULL;
if (ctx == usbi_fallback_context)
usbi_fallback_context = NULL;
usbi_mutex_static_unlock(&default_context_lock);
/* ... */
usbi_io_exit(_ctx);
for_each_device(_ctx, dev) {
usbi_warn(_ctx, "device %d.%d still referenced",
dev->bus_number, dev->device_address);
DEVICE_CTX(dev) = NULL;
}for_each_device (_ctx, dev) { ... }
if (!list_empty(&_ctx->open_devs))
usbi_warn(_ctx, "application left some devices open");
usbi_mutex_destroy(&_ctx->open_devs_lock);
usbi_mutex_destroy(&_ctx->usb_devs_lock);
free(_ctx);
}libusb_exit (libusb_context *ctx) { ... }
/* ... */
int API_EXPORTED libusb_has_capability(uint32_t capability)
{
switch (capability) {
case LIBUSB_CAP_HAS_CAPABILITY:
return 1;case LIBUSB_CAP_HAS_CAPABILITY:
case LIBUSB_CAP_HAS_HOTPLUG:
return !(usbi_backend.get_device_list);case LIBUSB_CAP_HAS_HOTPLUG:
case LIBUSB_CAP_HAS_HID_ACCESS:
return (usbi_backend.caps & USBI_CAP_HAS_HID_ACCESS);case LIBUSB_CAP_HAS_HID_ACCESS:
case LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER:
return (usbi_backend.caps & USBI_CAP_SUPPORTS_DETACH_KERNEL_DRIVER);case LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER:
}switch (capability) { ... }
return 0;
}libusb_has_capability (uint32_t capability) { ... }
#ifdef ENABLE_LOGGING
#ifdef LIBUSB_PRINTF_WIN32
/* ... */
int usbi_snprintf(char *str, size_t size, const char *format, ...)
{
va_list args;
int ret;
va_start(args, format);
ret = usbi_vsnprintf(str, size, format, args);
va_end(args);
return ret;
}usbi_snprintf (char *str, size_t size, const char *format, ...) { ... }
int usbi_vsnprintf(char *str, size_t size, const char *format, va_list args)
{
int ret;
ret = _vsnprintf(str, size, format, args);
if (ret < 0 || ret == (int)size) {
/* ... */
str[size - 1] = '\0';
if (ret < 0)
ret = _vsnprintf(NULL, 0, format, args);
}if (ret < 0 || ret == (int)size) { ... }
return ret;
}usbi_vsnprintf (char *str, size_t size, const char *format, va_list args) { ... }
/* ... */#endif
static void log_str(enum libusb_log_level level, const char *str)
{
#if defined(USE_SYSTEM_LOGGING_FACILITY)
#if defined(__ANDROID__)
int priority;
switch (level) {
case LIBUSB_LOG_LEVEL_NONE: return;
case LIBUSB_LOG_LEVEL_ERROR: priority = ANDROID_LOG_ERROR; break;
case LIBUSB_LOG_LEVEL_WARNING: priority = ANDROID_LOG_WARN; break;
case LIBUSB_LOG_LEVEL_INFO: priority = ANDROID_LOG_INFO; break;
case LIBUSB_LOG_LEVEL_DEBUG: priority = ANDROID_LOG_DEBUG; break;
default: priority = ANDROID_LOG_UNKNOWN;
}switch (level) { ... }
__android_log_write(priority, "libusb", str);/* ... */
#elif defined(_WIN32)
UNUSED(level);
OutputDebugStringA(str);/* ... */
#elif defined(HAVE_SYSLOG)
int syslog_level;
switch (level) {
case LIBUSB_LOG_LEVEL_NONE: return;
case LIBUSB_LOG_LEVEL_ERROR: syslog_level = LOG_ERR; break;
case LIBUSB_LOG_LEVEL_WARNING: syslog_level = LOG_WARNING; break;
case LIBUSB_LOG_LEVEL_INFO: syslog_level = LOG_INFO; break;
case LIBUSB_LOG_LEVEL_DEBUG: syslog_level = LOG_DEBUG; break;
default: syslog_level = LOG_INFO;
}switch (level) { ... }
syslog(syslog_level, "%s", str);/* ... */
#else
#warning System logging is not supported on this platform. Logging to stderr will be used instead.
UNUSED(level);
fputs(str, stderr);/* ... */
#endif/* ... */
#else
if (log_handler)
log_handler(NULL, level, str);
else
fputs(str, stderr);/* ... */
#endif
}log_str (enum libusb_log_level level, const char *str) { ... }
static void log_v(struct libusb_context *ctx, enum libusb_log_level level,
const char *function, const char *format, va_list args)
{
const char *prefix;
char buf[USBI_MAX_LOG_LEN];
int global_debug, header_len, text_len;
static int has_debug_header_been_displayed = 0;
#ifdef ENABLE_DEBUG_LOGGING
global_debug = 1;
UNUSED(ctx);/* ... */
#else
enum libusb_log_level ctx_level;
long default_level_value;
if (ctx) {
ctx_level = ctx->debug;
}if (ctx) { ... } else {
default_level_value = usbi_atomic_load(&default_debug_level);
ctx_level = default_level_value < 0 ? get_env_debug_level() : (enum libusb_log_level)default_level_value;
}else { ... }
if (ctx_level < level)
return;
global_debug = (ctx_level == LIBUSB_LOG_LEVEL_DEBUG);/* ... */
#endif
switch (level) {
case LIBUSB_LOG_LEVEL_NONE:
return;case LIBUSB_LOG_LEVEL_NONE:
case LIBUSB_LOG_LEVEL_ERROR:
prefix = "error";
break;case LIBUSB_LOG_LEVEL_ERROR:
case LIBUSB_LOG_LEVEL_WARNING:
prefix = "warning";
break;case LIBUSB_LOG_LEVEL_WARNING:
case LIBUSB_LOG_LEVEL_INFO:
prefix = "info";
break;case LIBUSB_LOG_LEVEL_INFO:
case LIBUSB_LOG_LEVEL_DEBUG:
prefix = "debug";
break;case LIBUSB_LOG_LEVEL_DEBUG:
default:
prefix = "unknown";
break;default
}switch (level) { ... }
if (global_debug) {
struct timespec timestamp;
if (!has_debug_header_been_displayed) {
has_debug_header_been_displayed = 1;
log_str(LIBUSB_LOG_LEVEL_DEBUG, "[timestamp] [threadID] facility level [function call] <message>" USBI_LOG_LINE_END);
log_str(LIBUSB_LOG_LEVEL_DEBUG, "--------------------------------------------------------------------------------" USBI_LOG_LINE_END);
}if (!has_debug_header_been_displayed) { ... }
usbi_get_monotonic_time(×tamp);
TIMESPEC_SUB(×tamp, ×tamp_origin, ×tamp);
header_len = snprintf(buf, sizeof(buf),
"[%2ld.%06ld] [%08x] libusb: %s [%s] ",
(long)timestamp.tv_sec, (long)(timestamp.tv_nsec / 1000L), usbi_get_tid(), prefix, function);
}if (global_debug) { ... } else {
header_len = snprintf(buf, sizeof(buf),
"libusb: %s [%s] ", prefix, function);
}else { ... }
if (header_len < 0 || header_len >= (int)sizeof(buf)) {
/* ... */
header_len = 0;
}if (header_len < 0 || header_len >= (int)sizeof(buf)) { ... }
text_len = vsnprintf(buf + header_len, sizeof(buf) - (size_t)header_len,
format, args);
if (text_len < 0 || text_len + header_len >= (int)sizeof(buf)) {
/* ... */
text_len = (int)sizeof(buf) - header_len;
}if (text_len < 0 || text_len + header_len >= (int)sizeof(buf)) { ... }
if (header_len + text_len + (int)sizeof(USBI_LOG_LINE_END) >= (int)sizeof(buf)) {
text_len -= (header_len + text_len + (int)sizeof(USBI_LOG_LINE_END)) - (int)sizeof(buf);
}if (header_len + text_len + (int)sizeof(USBI_LOG_LINE_END) >= (int)sizeof(buf)) { ... }
strcpy(buf + header_len + text_len, USBI_LOG_LINE_END);
log_str(level, buf);
#ifndef ENABLE_DEBUG_LOGGING
if (ctx && ctx->log_handler)
ctx->log_handler(ctx, level, buf);/* ... */
#endif
}log_v (struct libusb_context *ctx, enum libusb_log_level level, const char *function, const char *format, va_list args) { ... }
void usbi_log(struct libusb_context *ctx, enum libusb_log_level level,
const char *function, const char *format, ...)
{
va_list args;
va_start(args, format);
log_v(ctx, level, function, format, args);
va_end(args);
}usbi_log (struct libusb_context *ctx, enum libusb_log_level level, const char *function, const char *format, ...) { ... }
/* ... */
#endif
/* ... */
DEFAULT_VISIBILITY const char * LIBUSB_CALL libusb_error_name(int error_code)
{
switch (error_code) {
case LIBUSB_ERROR_IO:
return "LIBUSB_ERROR_IO";case LIBUSB_ERROR_IO:
case LIBUSB_ERROR_INVALID_PARAM:
return "LIBUSB_ERROR_INVALID_PARAM";case LIBUSB_ERROR_INVALID_PARAM:
case LIBUSB_ERROR_ACCESS:
return "LIBUSB_ERROR_ACCESS";case LIBUSB_ERROR_ACCESS:
case LIBUSB_ERROR_NO_DEVICE:
return "LIBUSB_ERROR_NO_DEVICE";case LIBUSB_ERROR_NO_DEVICE:
case LIBUSB_ERROR_NOT_FOUND:
return "LIBUSB_ERROR_NOT_FOUND";case LIBUSB_ERROR_NOT_FOUND:
case LIBUSB_ERROR_BUSY:
return "LIBUSB_ERROR_BUSY";case LIBUSB_ERROR_BUSY:
case LIBUSB_ERROR_TIMEOUT:
return "LIBUSB_ERROR_TIMEOUT";case LIBUSB_ERROR_TIMEOUT:
case LIBUSB_ERROR_OVERFLOW:
return "LIBUSB_ERROR_OVERFLOW";case LIBUSB_ERROR_OVERFLOW:
case LIBUSB_ERROR_PIPE:
return "LIBUSB_ERROR_PIPE";case LIBUSB_ERROR_PIPE:
case LIBUSB_ERROR_INTERRUPTED:
return "LIBUSB_ERROR_INTERRUPTED";case LIBUSB_ERROR_INTERRUPTED:
case LIBUSB_ERROR_NO_MEM:
return "LIBUSB_ERROR_NO_MEM";case LIBUSB_ERROR_NO_MEM:
case LIBUSB_ERROR_NOT_SUPPORTED:
return "LIBUSB_ERROR_NOT_SUPPORTED";case LIBUSB_ERROR_NOT_SUPPORTED:
case LIBUSB_ERROR_OTHER:
return "LIBUSB_ERROR_OTHER";
case LIBUSB_ERROR_OTHER:
case LIBUSB_TRANSFER_ERROR:
return "LIBUSB_TRANSFER_ERROR";case LIBUSB_TRANSFER_ERROR:
case LIBUSB_TRANSFER_TIMED_OUT:
return "LIBUSB_TRANSFER_TIMED_OUT";case LIBUSB_TRANSFER_TIMED_OUT:
case LIBUSB_TRANSFER_CANCELLED:
return "LIBUSB_TRANSFER_CANCELLED";case LIBUSB_TRANSFER_CANCELLED:
case LIBUSB_TRANSFER_STALL:
return "LIBUSB_TRANSFER_STALL";case LIBUSB_TRANSFER_STALL:
case LIBUSB_TRANSFER_NO_DEVICE:
return "LIBUSB_TRANSFER_NO_DEVICE";case LIBUSB_TRANSFER_NO_DEVICE:
case LIBUSB_TRANSFER_OVERFLOW:
return "LIBUSB_TRANSFER_OVERFLOW";
case LIBUSB_TRANSFER_OVERFLOW:
case 0:
return "LIBUSB_SUCCESS / LIBUSB_TRANSFER_COMPLETED";case 0:
default:
return "**UNKNOWN**";default
}switch (error_code) { ... }
}libusb_error_name (int error_code) { ... }
/* ... */
DEFAULT_VISIBILITY
const struct libusb_version * LIBUSB_CALL libusb_get_version(void)
{
return &libusb_version_internal;
}libusb_get_version (void) { ... }