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
37
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
522
523
524
525
526
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
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
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
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
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
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
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
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
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
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
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
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
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
1372
1373
1374
1375
1376
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
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
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
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
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
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
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
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
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
1828
1829
1830
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
1873
1874
1875
1876
1877
1878
1879
1880
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
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
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
2263
2264
2265
2266
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
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
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
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
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
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
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
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
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
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
|
// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build zos && s390x
// Many of the following syscalls are not available on all versions of z/OS.
// Some missing calls have legacy implementations/simulations but others
// will be missing completely. To achieve consistent failing behaviour on
// legacy systems, we first test the function pointer via a safeloading
// mechanism to see if the function exists on a given system. Then execution
// is branched to either continue the function call, or return an error.
package unix
import (
"bytes"
"fmt"
"os"
"reflect"
"regexp"
"runtime"
"sort"
"strings"
"sync"
"syscall"
"unsafe"
)
//go:noescape
func initZosLibVec()
//go:noescape
func GetZosLibVec() uintptr
func init() {
initZosLibVec()
r0, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS_____GETENV_A<<4, uintptr(unsafe.Pointer(&([]byte("__ZOS_XSYSTRACE\x00"))[0])))
if r0 != 0 {
n, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___ATOI_A<<4, r0)
ZosTraceLevel = int(n)
r0, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS_____GETENV_A<<4, uintptr(unsafe.Pointer(&([]byte("__ZOS_XSYSTRACEFD\x00"))[0])))
if r0 != 0 {
fd, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___ATOI_A<<4, r0)
f := os.NewFile(fd, "zostracefile")
if f != nil {
ZosTracefile = f
}
}
}
}
//go:noescape
func CallLeFuncWithErr(funcdesc uintptr, parms ...uintptr) (ret, errno2 uintptr, err Errno)
//go:noescape
func CallLeFuncWithPtrReturn(funcdesc uintptr, parms ...uintptr) (ret, errno2 uintptr, err Errno)
// -------------------------------
// pointer validity test
// good pointer returns 0
// bad pointer returns 1
//
//go:nosplit
func ptrtest(uintptr) uint64
// Load memory at ptr location with error handling if the location is invalid
//
//go:noescape
func safeload(ptr uintptr) (value uintptr, error uintptr)
const (
entrypointLocationOffset = 8 // From function descriptor
xplinkEyecatcher = 0x00c300c500c500f1 // ".C.E.E.1"
eyecatcherOffset = 16 // From function entrypoint (negative)
ppa1LocationOffset = 8 // From function entrypoint (negative)
nameLenOffset = 0x14 // From PPA1 start
nameOffset = 0x16 // From PPA1 start
)
func getPpaOffset(funcptr uintptr) int64 {
entrypoint, err := safeload(funcptr + entrypointLocationOffset)
if err != 0 {
return -1
}
// XPLink functions have ".C.E.E.1" as the first 8 bytes (EBCDIC)
val, err := safeload(entrypoint - eyecatcherOffset)
if err != 0 {
return -1
}
if val != xplinkEyecatcher {
return -1
}
ppaoff, err := safeload(entrypoint - ppa1LocationOffset)
if err != 0 {
return -1
}
ppaoff >>= 32
return int64(ppaoff)
}
//-------------------------------
// function descriptor pointer validity test
// good pointer returns 0
// bad pointer returns 1
// TODO: currently mksyscall_zos_s390x.go generate empty string for funcName
// have correct funcName pass to the funcptrtest function
func funcptrtest(funcptr uintptr, funcName string) uint64 {
entrypoint, err := safeload(funcptr + entrypointLocationOffset)
if err != 0 {
return 1
}
ppaoff := getPpaOffset(funcptr)
if ppaoff == -1 {
return 1
}
// PPA1 offset value is from the start of the entire function block, not the entrypoint
ppa1 := (entrypoint - eyecatcherOffset) + uintptr(ppaoff)
nameLen, err := safeload(ppa1 + nameLenOffset)
if err != 0 {
return 1
}
nameLen >>= 48
if nameLen > 128 {
return 1
}
// no function name input to argument end here
if funcName == "" {
return 0
}
var funcname [128]byte
for i := 0; i < int(nameLen); i += 8 {
v, err := safeload(ppa1 + nameOffset + uintptr(i))
if err != 0 {
return 1
}
funcname[i] = byte(v >> 56)
funcname[i+1] = byte(v >> 48)
funcname[i+2] = byte(v >> 40)
funcname[i+3] = byte(v >> 32)
funcname[i+4] = byte(v >> 24)
funcname[i+5] = byte(v >> 16)
funcname[i+6] = byte(v >> 8)
funcname[i+7] = byte(v)
}
runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4, // __e2a_l
[]uintptr{uintptr(unsafe.Pointer(&funcname[0])), nameLen})
name := string(funcname[:nameLen])
if name != funcName {
return 1
}
return 0
}
// For detection of capabilities on a system.
// Is function descriptor f a valid function?
func isValidLeFunc(f uintptr) error {
ret := funcptrtest(f, "")
if ret != 0 {
return fmt.Errorf("Bad pointer, not an LE function ")
}
return nil
}
// Retrieve function name from descriptor
func getLeFuncName(f uintptr) (string, error) {
// assume it has been checked, only check ppa1 validity here
entry := ((*[2]uintptr)(unsafe.Pointer(f)))[1]
preamp := ((*[4]uint32)(unsafe.Pointer(entry - eyecatcherOffset)))
offsetPpa1 := preamp[2]
if offsetPpa1 > 0x0ffff {
return "", fmt.Errorf("PPA1 offset seems too big 0x%x\n", offsetPpa1)
}
ppa1 := uintptr(unsafe.Pointer(preamp)) + uintptr(offsetPpa1)
res := ptrtest(ppa1)
if res != 0 {
return "", fmt.Errorf("PPA1 address not valid")
}
size := *(*uint16)(unsafe.Pointer(ppa1 + nameLenOffset))
if size > 128 {
return "", fmt.Errorf("Function name seems too long, length=%d\n", size)
}
var name [128]byte
funcname := (*[128]byte)(unsafe.Pointer(ppa1 + nameOffset))
copy(name[0:size], funcname[0:size])
runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4, // __e2a_l
[]uintptr{uintptr(unsafe.Pointer(&name[0])), uintptr(size)})
return string(name[:size]), nil
}
// Check z/OS version
func zosLeVersion() (version, release uint32) {
p1 := (*(*uintptr)(unsafe.Pointer(uintptr(1208)))) >> 32
p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 88)))
p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 8)))
p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 984)))
vrm := *(*uint32)(unsafe.Pointer(p1 + 80))
version = (vrm & 0x00ff0000) >> 16
release = (vrm & 0x0000ff00) >> 8
return
}
// returns a zos C FILE * for stdio fd 0, 1, 2
func ZosStdioFilep(fd int32) uintptr {
return uintptr(*(*uint64)(unsafe.Pointer(uintptr(*(*uint64)(unsafe.Pointer(uintptr(*(*uint64)(unsafe.Pointer(uintptr(uint64(*(*uint32)(unsafe.Pointer(uintptr(1208)))) + 80))) + uint64((fd+2)<<3))))))))
}
func copyStat(stat *Stat_t, statLE *Stat_LE_t) {
stat.Dev = uint64(statLE.Dev)
stat.Ino = uint64(statLE.Ino)
stat.Nlink = uint64(statLE.Nlink)
stat.Mode = uint32(statLE.Mode)
stat.Uid = uint32(statLE.Uid)
stat.Gid = uint32(statLE.Gid)
stat.Rdev = uint64(statLE.Rdev)
stat.Size = statLE.Size
stat.Atim.Sec = int64(statLE.Atim)
stat.Atim.Nsec = 0 //zos doesn't return nanoseconds
stat.Mtim.Sec = int64(statLE.Mtim)
stat.Mtim.Nsec = 0 //zos doesn't return nanoseconds
stat.Ctim.Sec = int64(statLE.Ctim)
stat.Ctim.Nsec = 0 //zos doesn't return nanoseconds
stat.Blksize = int64(statLE.Blksize)
stat.Blocks = statLE.Blocks
}
func svcCall(fnptr unsafe.Pointer, argv *unsafe.Pointer, dsa *uint64)
func svcLoad(name *byte) unsafe.Pointer
func svcUnload(name *byte, fnptr unsafe.Pointer) int64
func (d *Dirent) NameString() string {
if d == nil {
return ""
}
s := string(d.Name[:])
idx := strings.IndexByte(s, 0)
if idx == -1 {
return s
} else {
return s[:idx]
}
}
func DecodeData(dest []byte, sz int, val uint64) {
for i := 0; i < sz; i++ {
dest[sz-1-i] = byte((val >> (uint64(i * 8))) & 0xff)
}
}
func EncodeData(data []byte) uint64 {
var value uint64
sz := len(data)
for i := 0; i < sz; i++ {
value |= uint64(data[i]) << uint64(((sz - i - 1) * 8))
}
return value
}
func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
if sa.Port < 0 || sa.Port > 0xFFFF {
return nil, 0, EINVAL
}
sa.raw.Len = SizeofSockaddrInet4
sa.raw.Family = AF_INET
p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
p[0] = byte(sa.Port >> 8)
p[1] = byte(sa.Port)
for i := 0; i < len(sa.Addr); i++ {
sa.raw.Addr[i] = sa.Addr[i]
}
return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil
}
func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) {
if sa.Port < 0 || sa.Port > 0xFFFF {
return nil, 0, EINVAL
}
sa.raw.Len = SizeofSockaddrInet6
sa.raw.Family = AF_INET6
p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
p[0] = byte(sa.Port >> 8)
p[1] = byte(sa.Port)
sa.raw.Scope_id = sa.ZoneId
for i := 0; i < len(sa.Addr); i++ {
sa.raw.Addr[i] = sa.Addr[i]
}
return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil
}
func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
name := sa.Name
n := len(name)
if n >= len(sa.raw.Path) || n == 0 {
return nil, 0, EINVAL
}
sa.raw.Len = byte(3 + n) // 2 for Family, Len; 1 for NUL
sa.raw.Family = AF_UNIX
for i := 0; i < n; i++ {
sa.raw.Path[i] = int8(name[i])
}
return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil
}
func anyToSockaddr(_ int, rsa *RawSockaddrAny) (Sockaddr, error) {
// TODO(neeilan): Implement use of first param (fd)
switch rsa.Addr.Family {
case AF_UNIX:
pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
sa := new(SockaddrUnix)
// For z/OS, only replace NUL with @ when the
// length is not zero.
if pp.Len != 0 && pp.Path[0] == 0 {
// "Abstract" Unix domain socket.
// Rewrite leading NUL as @ for textual display.
// (This is the standard convention.)
// Not friendly to overwrite in place,
// but the callers below don't care.
pp.Path[0] = '@'
}
// Assume path ends at NUL.
//
// For z/OS, the length of the name is a field
// in the structure. To be on the safe side, we
// will still scan the name for a NUL but only
// to the length provided in the structure.
//
// This is not technically the Linux semantics for
// abstract Unix domain sockets--they are supposed
// to be uninterpreted fixed-size binary blobs--but
// everyone uses this convention.
n := 0
for n < int(pp.Len) && pp.Path[n] != 0 {
n++
}
sa.Name = string(unsafe.Slice((*byte)(unsafe.Pointer(&pp.Path[0])), n))
return sa, nil
case AF_INET:
pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
sa := new(SockaddrInet4)
p := (*[2]byte)(unsafe.Pointer(&pp.Port))
sa.Port = int(p[0])<<8 + int(p[1])
for i := 0; i < len(sa.Addr); i++ {
sa.Addr[i] = pp.Addr[i]
}
return sa, nil
case AF_INET6:
pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
sa := new(SockaddrInet6)
p := (*[2]byte)(unsafe.Pointer(&pp.Port))
sa.Port = int(p[0])<<8 + int(p[1])
sa.ZoneId = pp.Scope_id
for i := 0; i < len(sa.Addr); i++ {
sa.Addr[i] = pp.Addr[i]
}
return sa, nil
}
return nil, EAFNOSUPPORT
}
func Accept(fd int) (nfd int, sa Sockaddr, err error) {
var rsa RawSockaddrAny
var len _Socklen = SizeofSockaddrAny
nfd, err = accept(fd, &rsa, &len)
if err != nil {
return
}
// TODO(neeilan): Remove 0 in call
sa, err = anyToSockaddr(0, &rsa)
if err != nil {
Close(nfd)
nfd = 0
}
return
}
func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) {
var rsa RawSockaddrAny
var len _Socklen = SizeofSockaddrAny
nfd, err = accept4(fd, &rsa, &len, flags)
if err != nil {
return
}
if len > SizeofSockaddrAny {
panic("RawSockaddrAny too small")
}
// TODO(neeilan): Remove 0 in call
sa, err = anyToSockaddr(0, &rsa)
if err != nil {
Close(nfd)
nfd = 0
}
return
}
func Ctermid() (tty string, err error) {
var termdev [1025]byte
runtime.EnterSyscall()
r0, err2, err1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___CTERMID_A<<4, uintptr(unsafe.Pointer(&termdev[0])))
runtime.ExitSyscall()
if r0 == 0 {
return "", fmt.Errorf("%s (errno2=0x%x)\n", err1.Error(), err2)
}
s := string(termdev[:])
idx := strings.Index(s, string(rune(0)))
if idx == -1 {
tty = s
} else {
tty = s[:idx]
}
return
}
func (iov *Iovec) SetLen(length int) {
iov.Len = uint64(length)
}
func (msghdr *Msghdr) SetControllen(length int) {
msghdr.Controllen = int32(length)
}
func (cmsg *Cmsghdr) SetLen(length int) {
cmsg.Len = int32(length)
}
//sys fcntl(fd int, cmd int, arg int) (val int, err error)
//sys Flistxattr(fd int, dest []byte) (sz int, err error) = SYS___FLISTXATTR_A
//sys Fremovexattr(fd int, attr string) (err error) = SYS___FREMOVEXATTR_A
//sys read(fd int, p []byte) (n int, err error)
//sys write(fd int, p []byte) (n int, err error)
//sys Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) = SYS___FGETXATTR_A
//sys Fsetxattr(fd int, attr string, data []byte, flag int) (err error) = SYS___FSETXATTR_A
//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) = SYS___ACCEPT_A
//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = SYS___ACCEPT4_A
//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = SYS___BIND_A
//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = SYS___CONNECT_A
//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
//sysnb setgroups(n int, list *_Gid_t) (err error)
//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
//sysnb socket(domain int, typ int, proto int) (fd int, err error)
//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = SYS___GETPEERNAME_A
//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = SYS___GETSOCKNAME_A
//sys Removexattr(path string, attr string) (err error) = SYS___REMOVEXATTR_A
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) = SYS___RECVFROM_A
//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) = SYS___SENDTO_A
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = SYS___RECVMSG_A
//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = SYS___SENDMSG_A
//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) = SYS_MMAP
//sys munmap(addr uintptr, length uintptr) (err error) = SYS_MUNMAP
//sys ioctl(fd int, req int, arg uintptr) (err error) = SYS_IOCTL
//sys ioctlPtr(fd int, req int, arg unsafe.Pointer) (err error) = SYS_IOCTL
//sys shmat(id int, addr uintptr, flag int) (ret uintptr, err error) = SYS_SHMAT
//sys shmctl(id int, cmd int, buf *SysvShmDesc) (result int, err error) = SYS_SHMCTL64
//sys shmdt(addr uintptr) (err error) = SYS_SHMDT
//sys shmget(key int, size int, flag int) (id int, err error) = SYS_SHMGET
//sys Access(path string, mode uint32) (err error) = SYS___ACCESS_A
//sys Chdir(path string) (err error) = SYS___CHDIR_A
//sys Chown(path string, uid int, gid int) (err error) = SYS___CHOWN_A
//sys Chmod(path string, mode uint32) (err error) = SYS___CHMOD_A
//sys Creat(path string, mode uint32) (fd int, err error) = SYS___CREAT_A
//sys Dup(oldfd int) (fd int, err error)
//sys Dup2(oldfd int, newfd int) (err error)
//sys Dup3(oldfd int, newfd int, flags int) (err error) = SYS_DUP3
//sys Dirfd(dirp uintptr) (fd int, err error) = SYS_DIRFD
//sys EpollCreate(size int) (fd int, err error) = SYS_EPOLL_CREATE
//sys EpollCreate1(flags int) (fd int, err error) = SYS_EPOLL_CREATE1
//sys EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error) = SYS_EPOLL_CTL
//sys EpollPwait(epfd int, events []EpollEvent, msec int, sigmask *int) (n int, err error) = SYS_EPOLL_PWAIT
//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_WAIT
//sys Errno2() (er2 int) = SYS___ERRNO2
//sys Eventfd(initval uint, flags int) (fd int, err error) = SYS_EVENTFD
//sys Exit(code int)
//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) = SYS___FACCESSAT_A
func Faccessat2(dirfd int, path string, mode uint32, flags int) (err error) {
return Faccessat(dirfd, path, mode, flags)
}
//sys Fchdir(fd int) (err error)
//sys Fchmod(fd int, mode uint32) (err error)
//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) = SYS___FCHMODAT_A
//sys Fchown(fd int, uid int, gid int) (err error)
//sys Fchownat(fd int, path string, uid int, gid int, flags int) (err error) = SYS___FCHOWNAT_A
//sys FcntlInt(fd uintptr, cmd int, arg int) (retval int, err error) = SYS_FCNTL
//sys Fdatasync(fd int) (err error) = SYS_FDATASYNC
//sys fstat(fd int, stat *Stat_LE_t) (err error)
//sys fstatat(dirfd int, path string, stat *Stat_LE_t, flags int) (err error) = SYS___FSTATAT_A
func Fstat(fd int, stat *Stat_t) (err error) {
var statLE Stat_LE_t
err = fstat(fd, &statLE)
copyStat(stat, &statLE)
return
}
func Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) {
var statLE Stat_LE_t
err = fstatat(dirfd, path, &statLE, flags)
copyStat(stat, &statLE)
return
}
func impl_Getxattr(path string, attr string, dest []byte) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = BytePtrFromString(attr)
if err != nil {
return
}
var _p2 unsafe.Pointer
if len(dest) > 0 {
_p2 = unsafe.Pointer(&dest[0])
} else {
_p2 = unsafe.Pointer(&_zero)
}
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___GETXATTR_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)))
sz = int(r0)
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
}
return
}
//go:nosplit
func get_GetxattrAddr() *(func(path string, attr string, dest []byte) (sz int, err error))
var Getxattr = enter_Getxattr
func enter_Getxattr(path string, attr string, dest []byte) (sz int, err error) {
funcref := get_GetxattrAddr()
if validGetxattr() {
*funcref = impl_Getxattr
} else {
*funcref = error_Getxattr
}
return (*funcref)(path, attr, dest)
}
func error_Getxattr(path string, attr string, dest []byte) (sz int, err error) {
return -1, ENOSYS
}
func validGetxattr() bool {
if funcptrtest(GetZosLibVec()+SYS___GETXATTR_A<<4, "") == 0 {
if name, err := getLeFuncName(GetZosLibVec() + SYS___GETXATTR_A<<4); err == nil {
return name == "__getxattr_a"
}
}
return false
}
//sys Lgetxattr(link string, attr string, dest []byte) (sz int, err error) = SYS___LGETXATTR_A
//sys Lsetxattr(path string, attr string, data []byte, flags int) (err error) = SYS___LSETXATTR_A
func impl_Setxattr(path string, attr string, data []byte, flags int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = BytePtrFromString(attr)
if err != nil {
return
}
var _p2 unsafe.Pointer
if len(data) > 0 {
_p2 = unsafe.Pointer(&data[0])
} else {
_p2 = unsafe.Pointer(&_zero)
}
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___SETXATTR_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags))
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
}
return
}
//go:nosplit
func get_SetxattrAddr() *(func(path string, attr string, data []byte, flags int) (err error))
var Setxattr = enter_Setxattr
func enter_Setxattr(path string, attr string, data []byte, flags int) (err error) {
funcref := get_SetxattrAddr()
if validSetxattr() {
*funcref = impl_Setxattr
} else {
*funcref = error_Setxattr
}
return (*funcref)(path, attr, data, flags)
}
func error_Setxattr(path string, attr string, data []byte, flags int) (err error) {
return ENOSYS
}
func validSetxattr() bool {
if funcptrtest(GetZosLibVec()+SYS___SETXATTR_A<<4, "") == 0 {
if name, err := getLeFuncName(GetZosLibVec() + SYS___SETXATTR_A<<4); err == nil {
return name == "__setxattr_a"
}
}
return false
}
//sys Fstatfs(fd int, buf *Statfs_t) (err error) = SYS_FSTATFS
//sys Fstatvfs(fd int, stat *Statvfs_t) (err error) = SYS_FSTATVFS
//sys Fsync(fd int) (err error)
//sys Futimes(fd int, tv []Timeval) (err error) = SYS_FUTIMES
//sys Futimesat(dirfd int, path string, tv []Timeval) (err error) = SYS___FUTIMESAT_A
//sys Ftruncate(fd int, length int64) (err error)
//sys Getrandom(buf []byte, flags int) (n int, err error) = SYS_GETRANDOM
//sys InotifyInit() (fd int, err error) = SYS_INOTIFY_INIT
//sys InotifyInit1(flags int) (fd int, err error) = SYS_INOTIFY_INIT1
//sys InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error) = SYS___INOTIFY_ADD_WATCH_A
//sys InotifyRmWatch(fd int, watchdesc uint32) (success int, err error) = SYS_INOTIFY_RM_WATCH
//sys Listxattr(path string, dest []byte) (sz int, err error) = SYS___LISTXATTR_A
//sys Llistxattr(path string, dest []byte) (sz int, err error) = SYS___LLISTXATTR_A
//sys Lremovexattr(path string, attr string) (err error) = SYS___LREMOVEXATTR_A
//sys Lutimes(path string, tv []Timeval) (err error) = SYS___LUTIMES_A
//sys Mprotect(b []byte, prot int) (err error) = SYS_MPROTECT
//sys Msync(b []byte, flags int) (err error) = SYS_MSYNC
//sys Console2(cmsg *ConsMsg2, modstr *byte, concmd *uint32) (err error) = SYS___CONSOLE2
// Pipe2 begin
//go:nosplit
func getPipe2Addr() *(func([]int, int) error)
var Pipe2 = pipe2Enter
func pipe2Enter(p []int, flags int) (err error) {
if funcptrtest(GetZosLibVec()+SYS_PIPE2<<4, "") == 0 {
*getPipe2Addr() = pipe2Impl
} else {
*getPipe2Addr() = pipe2Error
}
return (*getPipe2Addr())(p, flags)
}
func pipe2Impl(p []int, flags int) (err error) {
var pp [2]_C_int
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_PIPE2<<4, uintptr(unsafe.Pointer(&pp[0])), uintptr(flags))
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
} else {
p[0] = int(pp[0])
p[1] = int(pp[1])
}
return
}
func pipe2Error(p []int, flags int) (err error) {
return fmt.Errorf("Pipe2 is not available on this system")
}
// Pipe2 end
//sys Poll(fds []PollFd, timeout int) (n int, err error) = SYS_POLL
func Readdir(dir uintptr) (dirent *Dirent, err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___READDIR_A<<4, uintptr(dir))
runtime.ExitSyscall()
dirent = (*Dirent)(unsafe.Pointer(r0))
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
}
return
}
//sys Readdir_r(dirp uintptr, entry *direntLE, result **direntLE) (err error) = SYS___READDIR_R_A
//sys Statfs(path string, buf *Statfs_t) (err error) = SYS___STATFS_A
//sys Syncfs(fd int) (err error) = SYS_SYNCFS
//sys Times(tms *Tms) (ticks uintptr, err error) = SYS_TIMES
//sys W_Getmntent(buff *byte, size int) (lastsys int, err error) = SYS_W_GETMNTENT
//sys W_Getmntent_A(buff *byte, size int) (lastsys int, err error) = SYS___W_GETMNTENT_A
//sys mount_LE(path string, filesystem string, fstype string, mtm uint32, parmlen int32, parm string) (err error) = SYS___MOUNT_A
//sys unmount_LE(filesystem string, mtm int) (err error) = SYS___UMOUNT_A
//sys Chroot(path string) (err error) = SYS___CHROOT_A
//sys Select(nmsgsfds int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (ret int, err error) = SYS_SELECT
//sysnb Uname(buf *Utsname) (err error) = SYS_____OSNAME_A
//sys Unshare(flags int) (err error) = SYS_UNSHARE
func Ptsname(fd int) (name string, err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___PTSNAME_A<<4, uintptr(fd))
runtime.ExitSyscall()
if r0 == 0 {
err = errnoErr2(e1, e2)
} else {
name = u2s(unsafe.Pointer(r0))
}
return
}
func u2s(cstr unsafe.Pointer) string {
str := (*[1024]uint8)(cstr)
i := 0
for str[i] != 0 {
i++
}
return string(str[:i])
}
func Close(fd int) (err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSE<<4, uintptr(fd))
runtime.ExitSyscall()
for i := 0; e1 == EAGAIN && i < 10; i++ {
runtime.EnterSyscall()
CallLeFuncWithErr(GetZosLibVec()+SYS_USLEEP<<4, uintptr(10))
runtime.ExitSyscall()
runtime.EnterSyscall()
r0, e2, e1 = CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSE<<4, uintptr(fd))
runtime.ExitSyscall()
}
if r0 != 0 {
err = errnoErr2(e1, e2)
}
return
}
// Dummy function: there are no semantics for Madvise on z/OS
func Madvise(b []byte, advice int) (err error) {
return
}
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
return mapper.Mmap(fd, offset, length, prot, flags)
}
func Munmap(b []byte) (err error) {
return mapper.Munmap(b)
}
//sys Gethostname(buf []byte) (err error) = SYS___GETHOSTNAME_A
//sysnb Getgid() (gid int)
//sysnb Getpid() (pid int)
//sysnb Getpgid(pid int) (pgid int, err error) = SYS_GETPGID
func Getpgrp() (pid int) {
pid, _ = Getpgid(0)
return
}
//sysnb Getppid() (pid int)
//sys Getpriority(which int, who int) (prio int, err error)
//sysnb Getrlimit(resource int, rlim *Rlimit) (err error) = SYS_GETRLIMIT
//sysnb getrusage(who int, rusage *rusage_zos) (err error) = SYS_GETRUSAGE
func Getrusage(who int, rusage *Rusage) (err error) {
var ruz rusage_zos
err = getrusage(who, &ruz)
//Only the first two fields of Rusage are set
rusage.Utime.Sec = ruz.Utime.Sec
rusage.Utime.Usec = int64(ruz.Utime.Usec)
rusage.Stime.Sec = ruz.Stime.Sec
rusage.Stime.Usec = int64(ruz.Stime.Usec)
return
}
//sys Getegid() (egid int) = SYS_GETEGID
//sys Geteuid() (euid int) = SYS_GETEUID
//sysnb Getsid(pid int) (sid int, err error) = SYS_GETSID
//sysnb Getuid() (uid int)
//sysnb Kill(pid int, sig Signal) (err error)
//sys Lchown(path string, uid int, gid int) (err error) = SYS___LCHOWN_A
//sys Link(path string, link string) (err error) = SYS___LINK_A
//sys Linkat(oldDirFd int, oldPath string, newDirFd int, newPath string, flags int) (err error) = SYS___LINKAT_A
//sys Listen(s int, n int) (err error)
//sys lstat(path string, stat *Stat_LE_t) (err error) = SYS___LSTAT_A
func Lstat(path string, stat *Stat_t) (err error) {
var statLE Stat_LE_t
err = lstat(path, &statLE)
copyStat(stat, &statLE)
return
}
// for checking symlinks begins with $VERSION/ $SYSNAME/ $SYSSYMR/ $SYSSYMA/
func isSpecialPath(path []byte) (v bool) {
var special = [4][8]byte{
[8]byte{'V', 'E', 'R', 'S', 'I', 'O', 'N', '/'},
[8]byte{'S', 'Y', 'S', 'N', 'A', 'M', 'E', '/'},
[8]byte{'S', 'Y', 'S', 'S', 'Y', 'M', 'R', '/'},
[8]byte{'S', 'Y', 'S', 'S', 'Y', 'M', 'A', '/'}}
var i, j int
for i = 0; i < len(special); i++ {
for j = 0; j < len(special[i]); j++ {
if path[j] != special[i][j] {
break
}
}
if j == len(special[i]) {
return true
}
}
return false
}
func realpath(srcpath string, abspath []byte) (pathlen int, errno int) {
var source [1024]byte
copy(source[:], srcpath)
source[len(srcpath)] = 0
ret := runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___REALPATH_A<<4, //__realpath_a()
[]uintptr{uintptr(unsafe.Pointer(&source[0])),
uintptr(unsafe.Pointer(&abspath[0]))})
if ret != 0 {
index := bytes.IndexByte(abspath[:], byte(0))
if index != -1 {
return index, 0
}
} else {
errptr := (*int)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4, []uintptr{}))) //__errno()
return 0, *errptr
}
return 0, 245 // EBADDATA 245
}
func Readlink(path string, buf []byte) (n int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(buf) > 0 {
_p1 = unsafe.Pointer(&buf[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
n = int(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___READLINK_A<<4,
[]uintptr{uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf))}))
runtime.KeepAlive(unsafe.Pointer(_p0))
if n == -1 {
value := *(*int32)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4, []uintptr{})))
err = errnoErr(Errno(value))
} else {
if buf[0] == '$' {
if isSpecialPath(buf[1:9]) {
cnt, err1 := realpath(path, buf)
if err1 == 0 {
n = cnt
}
}
}
}
return
}
func impl_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(buf) > 0 {
_p1 = unsafe.Pointer(&buf[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___READLINKAT_A<<4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
runtime.ExitSyscall()
n = int(r0)
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
return n, err
} else {
if buf[0] == '$' {
if isSpecialPath(buf[1:9]) {
cnt, err1 := realpath(path, buf)
if err1 == 0 {
n = cnt
}
}
}
}
return
}
//go:nosplit
func get_ReadlinkatAddr() *(func(dirfd int, path string, buf []byte) (n int, err error))
var Readlinkat = enter_Readlinkat
func enter_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
funcref := get_ReadlinkatAddr()
if funcptrtest(GetZosLibVec()+SYS___READLINKAT_A<<4, "") == 0 {
*funcref = impl_Readlinkat
} else {
*funcref = error_Readlinkat
}
return (*funcref)(dirfd, path, buf)
}
func error_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
n = -1
err = ENOSYS
return
}
//sys Mkdir(path string, mode uint32) (err error) = SYS___MKDIR_A
//sys Mkdirat(dirfd int, path string, mode uint32) (err error) = SYS___MKDIRAT_A
//sys Mkfifo(path string, mode uint32) (err error) = SYS___MKFIFO_A
//sys Mknod(path string, mode uint32, dev int) (err error) = SYS___MKNOD_A
//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) = SYS___MKNODAT_A
//sys PivotRoot(newroot string, oldroot string) (err error) = SYS___PIVOT_ROOT_A
//sys Pread(fd int, p []byte, offset int64) (n int, err error)
//sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
//sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error) = SYS___PRCTL_A
//sysnb Prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) = SYS_PRLIMIT
//sys Rename(from string, to string) (err error) = SYS___RENAME_A
//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) = SYS___RENAMEAT_A
//sys Renameat2(olddirfd int, oldpath string, newdirfd int, newpath string, flags uint) (err error) = SYS___RENAMEAT2_A
//sys Rmdir(path string) (err error) = SYS___RMDIR_A
//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
//sys Setegid(egid int) (err error) = SYS_SETEGID
//sys Seteuid(euid int) (err error) = SYS_SETEUID
//sys Sethostname(p []byte) (err error) = SYS___SETHOSTNAME_A
//sys Setns(fd int, nstype int) (err error) = SYS_SETNS
//sys Setpriority(which int, who int, prio int) (err error)
//sysnb Setpgid(pid int, pgid int) (err error) = SYS_SETPGID
//sysnb Setrlimit(resource int, lim *Rlimit) (err error)
//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID
//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID
//sysnb Setsid() (pid int, err error) = SYS_SETSID
//sys Setuid(uid int) (err error) = SYS_SETUID
//sys Setgid(uid int) (err error) = SYS_SETGID
//sys Shutdown(fd int, how int) (err error)
//sys stat(path string, statLE *Stat_LE_t) (err error) = SYS___STAT_A
func Stat(path string, sta *Stat_t) (err error) {
var statLE Stat_LE_t
err = stat(path, &statLE)
copyStat(sta, &statLE)
return
}
//sys Symlink(path string, link string) (err error) = SYS___SYMLINK_A
//sys Symlinkat(oldPath string, dirfd int, newPath string) (err error) = SYS___SYMLINKAT_A
//sys Sync() = SYS_SYNC
//sys Truncate(path string, length int64) (err error) = SYS___TRUNCATE_A
//sys Tcgetattr(fildes int, termptr *Termios) (err error) = SYS_TCGETATTR
//sys Tcsetattr(fildes int, when int, termptr *Termios) (err error) = SYS_TCSETATTR
//sys Umask(mask int) (oldmask int)
//sys Unlink(path string) (err error) = SYS___UNLINK_A
//sys Unlinkat(dirfd int, path string, flags int) (err error) = SYS___UNLINKAT_A
//sys Utime(path string, utim *Utimbuf) (err error) = SYS___UTIME_A
//sys open(path string, mode int, perm uint32) (fd int, err error) = SYS___OPEN_A
func Open(path string, mode int, perm uint32) (fd int, err error) {
if mode&O_ACCMODE == 0 {
mode |= O_RDONLY
}
return open(path, mode, perm)
}
//sys openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) = SYS___OPENAT_A
func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) {
if flags&O_ACCMODE == 0 {
flags |= O_RDONLY
}
return openat(dirfd, path, flags, mode)
}
//sys openat2(dirfd int, path string, open_how *OpenHow, size int) (fd int, err error) = SYS___OPENAT2_A
func Openat2(dirfd int, path string, how *OpenHow) (fd int, err error) {
if how.Flags&O_ACCMODE == 0 {
how.Flags |= O_RDONLY
}
return openat2(dirfd, path, how, SizeofOpenHow)
}
func ZosFdToPath(dirfd int) (path string, err error) {
var buffer [1024]byte
runtime.EnterSyscall()
ret, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_W_IOCTL<<4, uintptr(dirfd), 17, 1024, uintptr(unsafe.Pointer(&buffer[0])))
runtime.ExitSyscall()
if ret == 0 {
zb := bytes.IndexByte(buffer[:], 0)
if zb == -1 {
zb = len(buffer)
}
CallLeFuncWithErr(GetZosLibVec()+SYS___E2A_L<<4, uintptr(unsafe.Pointer(&buffer[0])), uintptr(zb))
return string(buffer[:zb]), nil
}
return "", errnoErr2(e1, e2)
}
//sys remove(path string) (err error)
func Remove(path string) error {
return remove(path)
}
const ImplementsGetwd = true
func Getcwd(buf []byte) (n int, err error) {
var p unsafe.Pointer
if len(buf) > 0 {
p = unsafe.Pointer(&buf[0])
} else {
p = unsafe.Pointer(&_zero)
}
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___GETCWD_A<<4, uintptr(p), uintptr(len(buf)))
runtime.ExitSyscall()
n = clen(buf) + 1
if r0 == 0 {
err = errnoErr2(e1, e2)
}
return
}
func Getwd() (wd string, err error) {
var buf [PathMax]byte
n, err := Getcwd(buf[0:])
if err != nil {
return "", err
}
// Getcwd returns the number of bytes written to buf, including the NUL.
if n < 1 || n > len(buf) || buf[n-1] != 0 {
return "", EINVAL
}
return string(buf[0 : n-1]), nil
}
func Getgroups() (gids []int, err error) {
n, err := getgroups(0, nil)
if err != nil {
return nil, err
}
if n == 0 {
return nil, nil
}
// Sanity check group count. Max is 1<<16 on Linux.
if n < 0 || n > 1<<20 {
return nil, EINVAL
}
a := make([]_Gid_t, n)
n, err = getgroups(n, &a[0])
if err != nil {
return nil, err
}
gids = make([]int, n)
for i, v := range a[0:n] {
gids[i] = int(v)
}
return
}
func Setgroups(gids []int) (err error) {
if len(gids) == 0 {
return setgroups(0, nil)
}
a := make([]_Gid_t, len(gids))
for i, v := range gids {
a[i] = _Gid_t(v)
}
return setgroups(len(a), &a[0])
}
func gettid() uint64
func Gettid() (tid int) {
return int(gettid())
}
type WaitStatus uint32
// Wait status is 7 bits at bottom, either 0 (exited),
// 0x7F (stopped), or a signal number that caused an exit.
// The 0x80 bit is whether there was a core dump.
// An extra number (exit code, signal causing a stop)
// is in the high bits. At least that's the idea.
// There are various irregularities. For example, the
// "continued" status is 0xFFFF, distinguishing itself
// from stopped via the core dump bit.
const (
mask = 0x7F
core = 0x80
exited = 0x00
stopped = 0x7F
shift = 8
)
func (w WaitStatus) Exited() bool { return w&mask == exited }
func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != exited }
func (w WaitStatus) Stopped() bool { return w&0xFF == stopped }
func (w WaitStatus) Continued() bool { return w == 0xFFFF }
func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 }
func (w WaitStatus) ExitStatus() int {
if !w.Exited() {
return -1
}
return int(w>>shift) & 0xFF
}
func (w WaitStatus) Signal() Signal {
if !w.Signaled() {
return -1
}
return Signal(w & mask)
}
func (w WaitStatus) StopSignal() Signal {
if !w.Stopped() {
return -1
}
return Signal(w>>shift) & 0xFF
}
func (w WaitStatus) TrapCause() int { return -1 }
//sys waitid(idType int, id int, info *Siginfo, options int) (err error)
func Waitid(idType int, id int, info *Siginfo, options int, rusage *Rusage) (err error) {
return waitid(idType, id, info, options)
}
//sys waitpid(pid int, wstatus *_C_int, options int) (wpid int, err error)
func impl_Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_WAIT4<<4, uintptr(pid), uintptr(unsafe.Pointer(wstatus)), uintptr(options), uintptr(unsafe.Pointer(rusage)))
runtime.ExitSyscall()
wpid = int(r0)
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
}
return
}
//go:nosplit
func get_Wait4Addr() *(func(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error))
var Wait4 = enter_Wait4
func enter_Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
funcref := get_Wait4Addr()
if funcptrtest(GetZosLibVec()+SYS_WAIT4<<4, "") == 0 {
*funcref = impl_Wait4
} else {
*funcref = legacyWait4
}
return (*funcref)(pid, wstatus, options, rusage)
}
func legacyWait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
// TODO(mundaym): z/OS doesn't have wait4. I don't think getrusage does what we want.
// At the moment rusage will not be touched.
var status _C_int
wpid, err = waitpid(pid, &status, options)
if wstatus != nil {
*wstatus = WaitStatus(status)
}
return
}
//sysnb gettimeofday(tv *timeval_zos) (err error)
func Gettimeofday(tv *Timeval) (err error) {
var tvz timeval_zos
err = gettimeofday(&tvz)
tv.Sec = tvz.Sec
tv.Usec = int64(tvz.Usec)
return
}
func Time(t *Time_t) (tt Time_t, err error) {
var tv Timeval
err = Gettimeofday(&tv)
if err != nil {
return 0, err
}
if t != nil {
*t = Time_t(tv.Sec)
}
return Time_t(tv.Sec), nil
}
func setTimespec(sec, nsec int64) Timespec {
return Timespec{Sec: sec, Nsec: nsec}
}
func setTimeval(sec, usec int64) Timeval { //fix
return Timeval{Sec: sec, Usec: usec}
}
//sysnb pipe(p *[2]_C_int) (err error)
func Pipe(p []int) (err error) {
if len(p) != 2 {
return EINVAL
}
var pp [2]_C_int
err = pipe(&pp)
p[0] = int(pp[0])
p[1] = int(pp[1])
return
}
//sys utimes(path string, timeval *[2]Timeval) (err error) = SYS___UTIMES_A
func Utimes(path string, tv []Timeval) (err error) {
if tv == nil {
return utimes(path, nil)
}
if len(tv) != 2 {
return EINVAL
}
return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}
//sys utimensat(dirfd int, path string, ts *[2]Timespec, flags int) (err error) = SYS___UTIMENSAT_A
func validUtimensat() bool {
if funcptrtest(GetZosLibVec()+SYS___UTIMENSAT_A<<4, "") == 0 {
if name, err := getLeFuncName(GetZosLibVec() + SYS___UTIMENSAT_A<<4); err == nil {
return name == "__utimensat_a"
}
}
return false
}
// Begin UtimesNano
//go:nosplit
func get_UtimesNanoAddr() *(func(path string, ts []Timespec) (err error))
var UtimesNano = enter_UtimesNano
func enter_UtimesNano(path string, ts []Timespec) (err error) {
funcref := get_UtimesNanoAddr()
if validUtimensat() {
*funcref = utimesNanoImpl
} else {
*funcref = legacyUtimesNano
}
return (*funcref)(path, ts)
}
func utimesNanoImpl(path string, ts []Timespec) (err error) {
if ts == nil {
return utimensat(AT_FDCWD, path, nil, 0)
}
if len(ts) != 2 {
return EINVAL
}
return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
}
func legacyUtimesNano(path string, ts []Timespec) (err error) {
if len(ts) != 2 {
return EINVAL
}
// Not as efficient as it could be because Timespec and
// Timeval have different types in the different OSes
tv := [2]Timeval{
NsecToTimeval(TimespecToNsec(ts[0])),
NsecToTimeval(TimespecToNsec(ts[1])),
}
return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}
// End UtimesNano
// Begin UtimesNanoAt
//go:nosplit
func get_UtimesNanoAtAddr() *(func(dirfd int, path string, ts []Timespec, flags int) (err error))
var UtimesNanoAt = enter_UtimesNanoAt
func enter_UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) (err error) {
funcref := get_UtimesNanoAtAddr()
if validUtimensat() {
*funcref = utimesNanoAtImpl
} else {
*funcref = legacyUtimesNanoAt
}
return (*funcref)(dirfd, path, ts, flags)
}
func utimesNanoAtImpl(dirfd int, path string, ts []Timespec, flags int) (err error) {
if ts == nil {
return utimensat(dirfd, path, nil, flags)
}
if len(ts) != 2 {
return EINVAL
}
return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags)
}
func legacyUtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) (err error) {
if path[0] != '/' {
dirPath, err := ZosFdToPath(dirfd)
if err != nil {
return err
}
path = dirPath + "/" + path
}
if flags == AT_SYMLINK_NOFOLLOW {
if len(ts) != 2 {
return EINVAL
}
if ts[0].Nsec >= 5e8 {
ts[0].Sec++
}
ts[0].Nsec = 0
if ts[1].Nsec >= 5e8 {
ts[1].Sec++
}
ts[1].Nsec = 0
// Not as efficient as it could be because Timespec and
// Timeval have different types in the different OSes
tv := []Timeval{
NsecToTimeval(TimespecToNsec(ts[0])),
NsecToTimeval(TimespecToNsec(ts[1])),
}
return Lutimes(path, tv)
}
return UtimesNano(path, ts)
}
// End UtimesNanoAt
func Getsockname(fd int) (sa Sockaddr, err error) {
var rsa RawSockaddrAny
var len _Socklen = SizeofSockaddrAny
if err = getsockname(fd, &rsa, &len); err != nil {
return
}
// TODO(neeilan) : Remove this 0 ( added to get sys/unix compiling on z/OS )
return anyToSockaddr(0, &rsa)
}
const (
// identifier constants
nwmHeaderIdentifier = 0xd5e6d4c8
nwmFilterIdentifier = 0xd5e6d4c6
nwmTCPConnIdentifier = 0xd5e6d4c3
nwmRecHeaderIdentifier = 0xd5e6d4d9
nwmIPStatsIdentifier = 0xd5e6d4c9d7e2e340
nwmIPGStatsIdentifier = 0xd5e6d4c9d7c7e2e3
nwmTCPStatsIdentifier = 0xd5e6d4e3c3d7e2e3
nwmUDPStatsIdentifier = 0xd5e6d4e4c4d7e2e3
nwmICMPGStatsEntry = 0xd5e6d4c9c3d4d7c7
nwmICMPTStatsEntry = 0xd5e6d4c9c3d4d7e3
// nwmHeader constants
nwmVersion1 = 1
nwmVersion2 = 2
nwmCurrentVer = 2
nwmTCPConnType = 1
nwmGlobalStatsType = 14
// nwmFilter constants
nwmFilterLclAddrMask = 0x20000000 // Local address
nwmFilterSrcAddrMask = 0x20000000 // Source address
nwmFilterLclPortMask = 0x10000000 // Local port
nwmFilterSrcPortMask = 0x10000000 // Source port
// nwmConnEntry constants
nwmTCPStateClosed = 1
nwmTCPStateListen = 2
nwmTCPStateSynSent = 3
nwmTCPStateSynRcvd = 4
nwmTCPStateEstab = 5
nwmTCPStateFinWait1 = 6
nwmTCPStateFinWait2 = 7
nwmTCPStateClosWait = 8
nwmTCPStateLastAck = 9
nwmTCPStateClosing = 10
nwmTCPStateTimeWait = 11
nwmTCPStateDeletTCB = 12
// Existing constants on linux
BPF_TCP_CLOSE = 1
BPF_TCP_LISTEN = 2
BPF_TCP_SYN_SENT = 3
BPF_TCP_SYN_RECV = 4
BPF_TCP_ESTABLISHED = 5
BPF_TCP_FIN_WAIT1 = 6
BPF_TCP_FIN_WAIT2 = 7
BPF_TCP_CLOSE_WAIT = 8
BPF_TCP_LAST_ACK = 9
BPF_TCP_CLOSING = 10
BPF_TCP_TIME_WAIT = 11
BPF_TCP_NEW_SYN_RECV = -1
BPF_TCP_MAX_STATES = -2
)
type nwmTriplet struct {
offset uint32
length uint32
number uint32
}
type nwmQuadruplet struct {
offset uint32
length uint32
number uint32
match uint32
}
type nwmHeader struct {
ident uint32
length uint32
version uint16
nwmType uint16
bytesNeeded uint32
options uint32
_ [16]byte
inputDesc nwmTriplet
outputDesc nwmQuadruplet
}
type nwmFilter struct {
ident uint32
flags uint32
resourceName [8]byte
resourceId uint32
listenerId uint32
local [28]byte // union of sockaddr4 and sockaddr6
remote [28]byte // union of sockaddr4 and sockaddr6
_ uint16
_ uint16
asid uint16
_ [2]byte
tnLuName [8]byte
tnMonGrp uint32
tnAppl [8]byte
applData [40]byte
nInterface [16]byte
dVipa [16]byte
dVipaPfx uint16
dVipaPort uint16
dVipaFamily byte
_ [3]byte
destXCF [16]byte
destXCFPfx uint16
destXCFFamily byte
_ [1]byte
targIP [16]byte
targIPPfx uint16
targIPFamily byte
_ [1]byte
_ [20]byte
}
type nwmRecHeader struct {
ident uint32
length uint32
number byte
_ [3]byte
}
type nwmTCPStatsEntry struct {
ident uint64
currEstab uint32
activeOpened uint32
passiveOpened uint32
connClosed uint32
estabResets uint32
attemptFails uint32
passiveDrops uint32
timeWaitReused uint32
inSegs uint64
predictAck uint32
predictData uint32
inDupAck uint32
inBadSum uint32
inBadLen uint32
inShort uint32
inDiscOldTime uint32
inAllBeforeWin uint32
inSomeBeforeWin uint32
inAllAfterWin uint32
inSomeAfterWin uint32
inOutOfOrder uint32
inAfterClose uint32
inWinProbes uint32
inWinUpdates uint32
outWinUpdates uint32
outSegs uint64
outDelayAcks uint32
outRsts uint32
retransSegs uint32
retransTimeouts uint32
retransDrops uint32
pmtuRetrans uint32
pmtuErrors uint32
outWinProbes uint32
probeDrops uint32
keepAliveProbes uint32
keepAliveDrops uint32
finwait2Drops uint32
acceptCount uint64
inBulkQSegs uint64
inDiscards uint64
connFloods uint32
connStalls uint32
cfgEphemDef uint16
ephemInUse uint16
ephemHiWater uint16
flags byte
_ [1]byte
ephemExhaust uint32
smcRCurrEstabLnks uint32
smcRLnkActTimeOut uint32
smcRActLnkOpened uint32
smcRPasLnkOpened uint32
smcRLnksClosed uint32
smcRCurrEstab uint32
smcRActiveOpened uint32
smcRPassiveOpened uint32
smcRConnClosed uint32
smcRInSegs uint64
smcROutSegs uint64
smcRInRsts uint32
smcROutRsts uint32
smcDCurrEstabLnks uint32
smcDActLnkOpened uint32
smcDPasLnkOpened uint32
smcDLnksClosed uint32
smcDCurrEstab uint32
smcDActiveOpened uint32
smcDPassiveOpened uint32
smcDConnClosed uint32
smcDInSegs uint64
smcDOutSegs uint64
smcDInRsts uint32
smcDOutRsts uint32
}
type nwmConnEntry struct {
ident uint32
local [28]byte // union of sockaddr4 and sockaddr6
remote [28]byte // union of sockaddr4 and sockaddr6
startTime [8]byte // uint64, changed to prevent padding from being inserted
lastActivity [8]byte // uint64
bytesIn [8]byte // uint64
bytesOut [8]byte // uint64
inSegs [8]byte // uint64
outSegs [8]byte // uint64
state uint16
activeOpen byte
flag01 byte
outBuffered uint32
inBuffered uint32
maxSndWnd uint32
reXmtCount uint32
congestionWnd uint32
ssThresh uint32
roundTripTime uint32
roundTripVar uint32
sendMSS uint32
sndWnd uint32
rcvBufSize uint32
sndBufSize uint32
outOfOrderCount uint32
lcl0WindowCount uint32
rmt0WindowCount uint32
dupacks uint32
flag02 byte
sockOpt6Cont byte
asid uint16
resourceName [8]byte
resourceId uint32
subtask uint32
sockOpt byte
sockOpt6 byte
clusterConnFlag byte
proto byte
targetAppl [8]byte
luName [8]byte
clientUserId [8]byte
logMode [8]byte
timeStamp uint32
timeStampAge uint32
serverResourceId uint32
intfName [16]byte
ttlsStatPol byte
ttlsStatConn byte
ttlsSSLProt uint16
ttlsNegCiph [2]byte
ttlsSecType byte
ttlsFIPS140Mode byte
ttlsUserID [8]byte
applData [40]byte
inOldestTime [8]byte // uint64
outOldestTime [8]byte // uint64
tcpTrustedPartner byte
_ [3]byte
bulkDataIntfName [16]byte
ttlsNegCiph4 [4]byte
smcReason uint32
lclSMCLinkId uint32
rmtSMCLinkId uint32
smcStatus byte
smcFlags byte
_ [2]byte
rcvWnd uint32
lclSMCBufSz uint32
rmtSMCBufSz uint32
ttlsSessID [32]byte
ttlsSessIDLen int16
_ [1]byte
smcDStatus byte
smcDReason uint32
}
var svcNameTable [][]byte = [][]byte{
[]byte("\xc5\xe9\xc2\xd5\xd4\xc9\xc6\xf4"), // svc_EZBNMIF4
}
const (
svc_EZBNMIF4 = 0
)
func GetsockoptTCPInfo(fd, level, opt int) (*TCPInfo, error) {
jobname := []byte("\x5c\x40\x40\x40\x40\x40\x40\x40") // "*"
responseBuffer := [4096]byte{0}
var bufferAlet, reasonCode uint32 = 0, 0
var bufferLen, returnValue, returnCode int32 = 4096, 0, 0
dsa := [18]uint64{0}
var argv [7]unsafe.Pointer
argv[0] = unsafe.Pointer(&jobname[0])
argv[1] = unsafe.Pointer(&responseBuffer[0])
argv[2] = unsafe.Pointer(&bufferAlet)
argv[3] = unsafe.Pointer(&bufferLen)
argv[4] = unsafe.Pointer(&returnValue)
argv[5] = unsafe.Pointer(&returnCode)
argv[6] = unsafe.Pointer(&reasonCode)
request := (*struct {
header nwmHeader
filter nwmFilter
})(unsafe.Pointer(&responseBuffer[0]))
EZBNMIF4 := svcLoad(&svcNameTable[svc_EZBNMIF4][0])
if EZBNMIF4 == nil {
return nil, errnoErr(EINVAL)
}
// GetGlobalStats EZBNMIF4 call
request.header.ident = nwmHeaderIdentifier
request.header.length = uint32(unsafe.Sizeof(request.header))
request.header.version = nwmCurrentVer
request.header.nwmType = nwmGlobalStatsType
request.header.options = 0x80000000
svcCall(EZBNMIF4, &argv[0], &dsa[0])
// outputDesc field is filled by EZBNMIF4 on success
if returnCode != 0 || request.header.outputDesc.offset == 0 {
return nil, errnoErr(EINVAL)
}
// Check that EZBNMIF4 returned a nwmRecHeader
recHeader := (*nwmRecHeader)(unsafe.Pointer(&responseBuffer[request.header.outputDesc.offset]))
if recHeader.ident != nwmRecHeaderIdentifier {
return nil, errnoErr(EINVAL)
}
// Parse nwmTriplets to get offsets of returned entries
var sections []*uint64
var sectionDesc *nwmTriplet = (*nwmTriplet)(unsafe.Pointer(&responseBuffer[0]))
for i := uint32(0); i < uint32(recHeader.number); i++ {
offset := request.header.outputDesc.offset + uint32(unsafe.Sizeof(*recHeader)) + i*uint32(unsafe.Sizeof(*sectionDesc))
sectionDesc = (*nwmTriplet)(unsafe.Pointer(&responseBuffer[offset]))
for j := uint32(0); j < sectionDesc.number; j++ {
offset = request.header.outputDesc.offset + sectionDesc.offset + j*sectionDesc.length
sections = append(sections, (*uint64)(unsafe.Pointer(&responseBuffer[offset])))
}
}
// Find nwmTCPStatsEntry in returned entries
var tcpStats *nwmTCPStatsEntry = nil
for _, ptr := range sections {
switch *ptr {
case nwmTCPStatsIdentifier:
if tcpStats != nil {
return nil, errnoErr(EINVAL)
}
tcpStats = (*nwmTCPStatsEntry)(unsafe.Pointer(ptr))
case nwmIPStatsIdentifier:
case nwmIPGStatsIdentifier:
case nwmUDPStatsIdentifier:
case nwmICMPGStatsEntry:
case nwmICMPTStatsEntry:
default:
return nil, errnoErr(EINVAL)
}
}
if tcpStats == nil {
return nil, errnoErr(EINVAL)
}
// GetConnectionDetail EZBNMIF4 call
responseBuffer = [4096]byte{0}
dsa = [18]uint64{0}
bufferAlet, reasonCode = 0, 0
bufferLen, returnValue, returnCode = 4096, 0, 0
nameptr := (*uint32)(unsafe.Pointer(uintptr(0x21c))) // Get jobname of current process
nameptr = (*uint32)(unsafe.Pointer(uintptr(*nameptr + 12)))
argv[0] = unsafe.Pointer(uintptr(*nameptr))
request.header.ident = nwmHeaderIdentifier
request.header.length = uint32(unsafe.Sizeof(request.header))
request.header.version = nwmCurrentVer
request.header.nwmType = nwmTCPConnType
request.header.options = 0x80000000
request.filter.ident = nwmFilterIdentifier
var localSockaddr RawSockaddrAny
socklen := _Socklen(SizeofSockaddrAny)
err := getsockname(fd, &localSockaddr, &socklen)
if err != nil {
return nil, errnoErr(EINVAL)
}
if localSockaddr.Addr.Family == AF_INET {
localSockaddr := (*RawSockaddrInet4)(unsafe.Pointer(&localSockaddr.Addr))
localSockFilter := (*RawSockaddrInet4)(unsafe.Pointer(&request.filter.local[0]))
localSockFilter.Family = AF_INET
var i int
for i = 0; i < 4; i++ {
if localSockaddr.Addr[i] != 0 {
break
}
}
if i != 4 {
request.filter.flags |= nwmFilterLclAddrMask
for i = 0; i < 4; i++ {
localSockFilter.Addr[i] = localSockaddr.Addr[i]
}
}
if localSockaddr.Port != 0 {
request.filter.flags |= nwmFilterLclPortMask
localSockFilter.Port = localSockaddr.Port
}
} else if localSockaddr.Addr.Family == AF_INET6 {
localSockaddr := (*RawSockaddrInet6)(unsafe.Pointer(&localSockaddr.Addr))
localSockFilter := (*RawSockaddrInet6)(unsafe.Pointer(&request.filter.local[0]))
localSockFilter.Family = AF_INET6
var i int
for i = 0; i < 16; i++ {
if localSockaddr.Addr[i] != 0 {
break
}
}
if i != 16 {
request.filter.flags |= nwmFilterLclAddrMask
for i = 0; i < 16; i++ {
localSockFilter.Addr[i] = localSockaddr.Addr[i]
}
}
if localSockaddr.Port != 0 {
request.filter.flags |= nwmFilterLclPortMask
localSockFilter.Port = localSockaddr.Port
}
}
svcCall(EZBNMIF4, &argv[0], &dsa[0])
// outputDesc field is filled by EZBNMIF4 on success
if returnCode != 0 || request.header.outputDesc.offset == 0 {
return nil, errnoErr(EINVAL)
}
// Check that EZBNMIF4 returned a nwmConnEntry
conn := (*nwmConnEntry)(unsafe.Pointer(&responseBuffer[request.header.outputDesc.offset]))
if conn.ident != nwmTCPConnIdentifier {
return nil, errnoErr(EINVAL)
}
// Copy data from the returned data structures into tcpInfo
// Stats from nwmConnEntry are specific to that connection.
// Stats from nwmTCPStatsEntry are global (to the interface?)
// Fields may not be an exact match. Some fields have no equivalent.
var tcpinfo TCPInfo
tcpinfo.State = uint8(conn.state)
tcpinfo.Ca_state = 0 // dummy
tcpinfo.Retransmits = uint8(tcpStats.retransSegs)
tcpinfo.Probes = uint8(tcpStats.outWinProbes)
tcpinfo.Backoff = 0 // dummy
tcpinfo.Options = 0 // dummy
tcpinfo.Rto = tcpStats.retransTimeouts
tcpinfo.Ato = tcpStats.outDelayAcks
tcpinfo.Snd_mss = conn.sendMSS
tcpinfo.Rcv_mss = conn.sendMSS // dummy
tcpinfo.Unacked = 0 // dummy
tcpinfo.Sacked = 0 // dummy
tcpinfo.Lost = 0 // dummy
tcpinfo.Retrans = conn.reXmtCount
tcpinfo.Fackets = 0 // dummy
tcpinfo.Last_data_sent = uint32(*(*uint64)(unsafe.Pointer(&conn.lastActivity[0])))
tcpinfo.Last_ack_sent = uint32(*(*uint64)(unsafe.Pointer(&conn.outOldestTime[0])))
tcpinfo.Last_data_recv = uint32(*(*uint64)(unsafe.Pointer(&conn.inOldestTime[0])))
tcpinfo.Last_ack_recv = uint32(*(*uint64)(unsafe.Pointer(&conn.inOldestTime[0])))
tcpinfo.Pmtu = conn.sendMSS // dummy, NWMIfRouteMtu is a candidate
tcpinfo.Rcv_ssthresh = conn.ssThresh
tcpinfo.Rtt = conn.roundTripTime
tcpinfo.Rttvar = conn.roundTripVar
tcpinfo.Snd_ssthresh = conn.ssThresh // dummy
tcpinfo.Snd_cwnd = conn.congestionWnd
tcpinfo.Advmss = conn.sendMSS // dummy
tcpinfo.Reordering = 0 // dummy
tcpinfo.Rcv_rtt = conn.roundTripTime // dummy
tcpinfo.Rcv_space = conn.sendMSS // dummy
tcpinfo.Total_retrans = conn.reXmtCount
svcUnload(&svcNameTable[svc_EZBNMIF4][0], EZBNMIF4)
return &tcpinfo, nil
}
// GetsockoptString returns the string value of the socket option opt for the
// socket associated with fd at the given socket level.
func GetsockoptString(fd, level, opt int) (string, error) {
buf := make([]byte, 256)
vallen := _Socklen(len(buf))
err := getsockopt(fd, level, opt, unsafe.Pointer(&buf[0]), &vallen)
if err != nil {
return "", err
}
return ByteSliceToString(buf[:vallen]), nil
}
func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
var msg Msghdr
var rsa RawSockaddrAny
msg.Name = (*byte)(unsafe.Pointer(&rsa))
msg.Namelen = SizeofSockaddrAny
var iov Iovec
if len(p) > 0 {
iov.Base = (*byte)(unsafe.Pointer(&p[0]))
iov.SetLen(len(p))
}
var dummy byte
if len(oob) > 0 {
// receive at least one normal byte
if len(p) == 0 {
iov.Base = &dummy
iov.SetLen(1)
}
msg.Control = (*byte)(unsafe.Pointer(&oob[0]))
msg.SetControllen(len(oob))
}
msg.Iov = &iov
msg.Iovlen = 1
if n, err = recvmsg(fd, &msg, flags); err != nil {
return
}
oobn = int(msg.Controllen)
recvflags = int(msg.Flags)
// source address is only specified if the socket is unconnected
if rsa.Addr.Family != AF_UNSPEC {
// TODO(neeilan): Remove 0 arg added to get this compiling on z/OS
from, err = anyToSockaddr(0, &rsa)
}
return
}
func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
_, err = SendmsgN(fd, p, oob, to, flags)
return
}
func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) {
var ptr unsafe.Pointer
var salen _Socklen
if to != nil {
var err error
ptr, salen, err = to.sockaddr()
if err != nil {
return 0, err
}
}
var msg Msghdr
msg.Name = (*byte)(unsafe.Pointer(ptr))
msg.Namelen = int32(salen)
var iov Iovec
if len(p) > 0 {
iov.Base = (*byte)(unsafe.Pointer(&p[0]))
iov.SetLen(len(p))
}
var dummy byte
if len(oob) > 0 {
// send at least one normal byte
if len(p) == 0 {
iov.Base = &dummy
iov.SetLen(1)
}
msg.Control = (*byte)(unsafe.Pointer(&oob[0]))
msg.SetControllen(len(oob))
}
msg.Iov = &iov
msg.Iovlen = 1
if n, err = sendmsg(fd, &msg, flags); err != nil {
return 0, err
}
if len(oob) > 0 && len(p) == 0 {
n = 0
}
return n, nil
}
func Opendir(name string) (uintptr, error) {
p, err := BytePtrFromString(name)
if err != nil {
return 0, err
}
err = nil
runtime.EnterSyscall()
dir, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___OPENDIR_A<<4, uintptr(unsafe.Pointer(p)))
runtime.ExitSyscall()
runtime.KeepAlive(unsafe.Pointer(p))
if dir == 0 {
err = errnoErr2(e1, e2)
}
return dir, err
}
// clearsyscall.Errno resets the errno value to 0.
func clearErrno()
func Closedir(dir uintptr) error {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSEDIR<<4, dir)
runtime.ExitSyscall()
if r0 != 0 {
return errnoErr2(e1, e2)
}
return nil
}
func Seekdir(dir uintptr, pos int) {
runtime.EnterSyscall()
CallLeFuncWithErr(GetZosLibVec()+SYS_SEEKDIR<<4, dir, uintptr(pos))
runtime.ExitSyscall()
}
func Telldir(dir uintptr) (int, error) {
p, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_TELLDIR<<4, dir)
pos := int(p)
if int64(p) == -1 {
return pos, errnoErr2(e1, e2)
}
return pos, nil
}
// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
// struct flock is packed on z/OS. We can't emulate that in Go so
// instead we pack it here.
var flock [24]byte
*(*int16)(unsafe.Pointer(&flock[0])) = lk.Type
*(*int16)(unsafe.Pointer(&flock[2])) = lk.Whence
*(*int64)(unsafe.Pointer(&flock[4])) = lk.Start
*(*int64)(unsafe.Pointer(&flock[12])) = lk.Len
*(*int32)(unsafe.Pointer(&flock[20])) = lk.Pid
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_FCNTL<<4, fd, uintptr(cmd), uintptr(unsafe.Pointer(&flock)))
runtime.ExitSyscall()
lk.Type = *(*int16)(unsafe.Pointer(&flock[0]))
lk.Whence = *(*int16)(unsafe.Pointer(&flock[2]))
lk.Start = *(*int64)(unsafe.Pointer(&flock[4]))
lk.Len = *(*int64)(unsafe.Pointer(&flock[12]))
lk.Pid = *(*int32)(unsafe.Pointer(&flock[20]))
if r0 == 0 {
return nil
}
return errnoErr2(e1, e2)
}
func impl_Flock(fd int, how int) (err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_FLOCK<<4, uintptr(fd), uintptr(how))
runtime.ExitSyscall()
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
}
return
}
//go:nosplit
func get_FlockAddr() *(func(fd int, how int) (err error))
var Flock = enter_Flock
func validFlock(fp uintptr) bool {
if funcptrtest(GetZosLibVec()+SYS_FLOCK<<4, "") == 0 {
if name, err := getLeFuncName(GetZosLibVec() + SYS_FLOCK<<4); err == nil {
return name == "flock"
}
}
return false
}
func enter_Flock(fd int, how int) (err error) {
funcref := get_FlockAddr()
if validFlock(GetZosLibVec() + SYS_FLOCK<<4) {
*funcref = impl_Flock
} else {
*funcref = legacyFlock
}
return (*funcref)(fd, how)
}
func legacyFlock(fd int, how int) error {
var flock_type int16
var fcntl_cmd int
switch how {
case LOCK_SH | LOCK_NB:
flock_type = F_RDLCK
fcntl_cmd = F_SETLK
case LOCK_EX | LOCK_NB:
flock_type = F_WRLCK
fcntl_cmd = F_SETLK
case LOCK_EX:
flock_type = F_WRLCK
fcntl_cmd = F_SETLKW
case LOCK_UN:
flock_type = F_UNLCK
fcntl_cmd = F_SETLKW
default:
}
flock := Flock_t{
Type: int16(flock_type),
Whence: int16(0),
Start: int64(0),
Len: int64(0),
Pid: int32(Getppid()),
}
err := FcntlFlock(uintptr(fd), fcntl_cmd, &flock)
return err
}
func Mlock(b []byte) (err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP)
runtime.ExitSyscall()
if r0 != 0 {
err = errnoErr2(e1, e2)
}
return
}
func Mlock2(b []byte, flags int) (err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP)
runtime.ExitSyscall()
if r0 != 0 {
err = errnoErr2(e1, e2)
}
return
}
func Mlockall(flags int) (err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP)
runtime.ExitSyscall()
if r0 != 0 {
err = errnoErr2(e1, e2)
}
return
}
func Munlock(b []byte) (err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_SWAP)
runtime.ExitSyscall()
if r0 != 0 {
err = errnoErr2(e1, e2)
}
return
}
func Munlockall() (err error) {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_SWAP)
runtime.ExitSyscall()
if r0 != 0 {
err = errnoErr2(e1, e2)
}
return
}
func ClockGettime(clockid int32, ts *Timespec) error {
var ticks_per_sec uint32 = 100 //TODO(kenan): value is currently hardcoded; need sysconf() call otherwise
var nsec_per_sec int64 = 1000000000
if ts == nil {
return EFAULT
}
if clockid == CLOCK_REALTIME || clockid == CLOCK_MONOTONIC {
var nanotime int64 = runtime.Nanotime1()
ts.Sec = nanotime / nsec_per_sec
ts.Nsec = nanotime % nsec_per_sec
} else if clockid == CLOCK_PROCESS_CPUTIME_ID || clockid == CLOCK_THREAD_CPUTIME_ID {
var tm Tms
_, err := Times(&tm)
if err != nil {
return EFAULT
}
ts.Sec = int64(tm.Utime / ticks_per_sec)
ts.Nsec = int64(tm.Utime) * nsec_per_sec / int64(ticks_per_sec)
} else {
return EINVAL
}
return nil
}
// Chtag
//go:nosplit
func get_ChtagAddr() *(func(path string, ccsid uint64, textbit uint64) error)
var Chtag = enter_Chtag
func enter_Chtag(path string, ccsid uint64, textbit uint64) error {
funcref := get_ChtagAddr()
if validSetxattr() {
*funcref = impl_Chtag
} else {
*funcref = legacy_Chtag
}
return (*funcref)(path, ccsid, textbit)
}
func legacy_Chtag(path string, ccsid uint64, textbit uint64) error {
tag := ccsid<<16 | textbit<<15
var tag_buff [8]byte
DecodeData(tag_buff[:], 8, tag)
return Setxattr(path, "filetag", tag_buff[:], XATTR_REPLACE)
}
func impl_Chtag(path string, ccsid uint64, textbit uint64) error {
tag := ccsid<<16 | textbit<<15
var tag_buff [4]byte
DecodeData(tag_buff[:], 4, tag)
return Setxattr(path, "system.filetag", tag_buff[:], XATTR_REPLACE)
}
// End of Chtag
// Nanosleep
//go:nosplit
func get_NanosleepAddr() *(func(time *Timespec, leftover *Timespec) error)
var Nanosleep = enter_Nanosleep
func enter_Nanosleep(time *Timespec, leftover *Timespec) error {
funcref := get_NanosleepAddr()
if funcptrtest(GetZosLibVec()+SYS_NANOSLEEP<<4, "") == 0 {
*funcref = impl_Nanosleep
} else {
*funcref = legacyNanosleep
}
return (*funcref)(time, leftover)
}
func impl_Nanosleep(time *Timespec, leftover *Timespec) error {
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_NANOSLEEP<<4, uintptr(unsafe.Pointer(time)), uintptr(unsafe.Pointer(leftover)))
runtime.ExitSyscall()
if int64(r0) == -1 {
return errnoErr2(e1, e2)
}
return nil
}
func legacyNanosleep(time *Timespec, leftover *Timespec) error {
t0 := runtime.Nanotime1()
var secrem uint32
var nsecrem uint32
total := time.Sec*1000000000 + time.Nsec
elapsed := runtime.Nanotime1() - t0
var rv int32
var rc int32
var err error
// repeatedly sleep for 1 second until less than 1 second left
for total-elapsed > 1000000000 {
rv, rc, _ = BpxCondTimedWait(uint32(1), uint32(0), uint32(CW_CONDVAR), &secrem, &nsecrem)
if rv != 0 && rc != 112 { // 112 is EAGAIN
if leftover != nil && rc == 120 { // 120 is EINTR
leftover.Sec = int64(secrem)
leftover.Nsec = int64(nsecrem)
}
err = Errno(rc)
return err
}
elapsed = runtime.Nanotime1() - t0
}
// sleep the remainder
if total > elapsed {
rv, rc, _ = BpxCondTimedWait(uint32(0), uint32(total-elapsed), uint32(CW_CONDVAR), &secrem, &nsecrem)
}
if leftover != nil && rc == 120 {
leftover.Sec = int64(secrem)
leftover.Nsec = int64(nsecrem)
}
if rv != 0 && rc != 112 {
err = Errno(rc)
}
return err
}
// End of Nanosleep
var (
Stdin = 0
Stdout = 1
Stderr = 2
)
// Do the interface allocations only once for common
// Errno values.
var (
errEAGAIN error = syscall.EAGAIN
errEINVAL error = syscall.EINVAL
errENOENT error = syscall.ENOENT
)
var ZosTraceLevel int
var ZosTracefile *os.File
var (
signalNameMapOnce sync.Once
signalNameMap map[string]syscall.Signal
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e Errno) error {
switch e {
case 0:
return nil
case EAGAIN:
return errEAGAIN
case EINVAL:
return errEINVAL
case ENOENT:
return errENOENT
}
return e
}
var reg *regexp.Regexp
// enhanced with zos specific errno2
func errnoErr2(e Errno, e2 uintptr) error {
switch e {
case 0:
return nil
case EAGAIN:
return errEAGAIN
/*
Allow the retrieval of errno2 for EINVAL and ENOENT on zos
case EINVAL:
return errEINVAL
case ENOENT:
return errENOENT
*/
}
if ZosTraceLevel > 0 {
var name string
if reg == nil {
reg = regexp.MustCompile("(^unix\\.[^/]+$|.*\\/unix\\.[^/]+$)")
}
i := 1
pc, file, line, ok := runtime.Caller(i)
if ok {
name = runtime.FuncForPC(pc).Name()
}
for ok && reg.MatchString(runtime.FuncForPC(pc).Name()) {
i += 1
pc, file, line, ok = runtime.Caller(i)
}
if ok {
if ZosTracefile == nil {
ZosConsolePrintf("From %s:%d\n", file, line)
ZosConsolePrintf("%s: %s (errno2=0x%x)\n", name, e.Error(), e2)
} else {
fmt.Fprintf(ZosTracefile, "From %s:%d\n", file, line)
fmt.Fprintf(ZosTracefile, "%s: %s (errno2=0x%x)\n", name, e.Error(), e2)
}
} else {
if ZosTracefile == nil {
ZosConsolePrintf("%s (errno2=0x%x)\n", e.Error(), e2)
} else {
fmt.Fprintf(ZosTracefile, "%s (errno2=0x%x)\n", e.Error(), e2)
}
}
}
return e
}
// ErrnoName returns the error name for error number e.
func ErrnoName(e Errno) string {
i := sort.Search(len(errorList), func(i int) bool {
return errorList[i].num >= e
})
if i < len(errorList) && errorList[i].num == e {
return errorList[i].name
}
return ""
}
// SignalName returns the signal name for signal number s.
func SignalName(s syscall.Signal) string {
i := sort.Search(len(signalList), func(i int) bool {
return signalList[i].num >= s
})
if i < len(signalList) && signalList[i].num == s {
return signalList[i].name
}
return ""
}
// SignalNum returns the syscall.Signal for signal named s,
// or 0 if a signal with such name is not found.
// The signal name should start with "SIG".
func SignalNum(s string) syscall.Signal {
signalNameMapOnce.Do(func() {
signalNameMap = make(map[string]syscall.Signal, len(signalList))
for _, signal := range signalList {
signalNameMap[signal.name] = signal.num
}
})
return signalNameMap[s]
}
// clen returns the index of the first NULL byte in n or len(n) if n contains no NULL byte.
func clen(n []byte) int {
i := bytes.IndexByte(n, 0)
if i == -1 {
i = len(n)
}
return i
}
// Mmap manager, for use by operating system-specific implementations.
type mmapper struct {
sync.Mutex
active map[*byte][]byte // active mappings; key is last byte in mapping
mmap func(addr, length uintptr, prot, flags, fd int, offset int64) (uintptr, error)
munmap func(addr uintptr, length uintptr) error
}
func (m *mmapper) Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
if length <= 0 {
return nil, EINVAL
}
// Set __MAP_64 by default
flags |= __MAP_64
// Map the requested memory.
addr, errno := m.mmap(0, uintptr(length), prot, flags, fd, offset)
if errno != nil {
return nil, errno
}
// Slice memory layout
var sl = struct {
addr uintptr
len int
cap int
}{addr, length, length}
// Use unsafe to turn sl into a []byte.
b := *(*[]byte)(unsafe.Pointer(&sl))
// Register mapping in m and return it.
p := &b[cap(b)-1]
m.Lock()
defer m.Unlock()
m.active[p] = b
return b, nil
}
func (m *mmapper) Munmap(data []byte) (err error) {
if len(data) == 0 || len(data) != cap(data) {
return EINVAL
}
// Find the base of the mapping.
p := &data[cap(data)-1]
m.Lock()
defer m.Unlock()
b := m.active[p]
if b == nil || &b[0] != &data[0] {
return EINVAL
}
// Unmap the memory and update m.
if errno := m.munmap(uintptr(unsafe.Pointer(&b[0])), uintptr(len(b))); errno != nil {
return errno
}
delete(m.active, p)
return nil
}
func Read(fd int, p []byte) (n int, err error) {
n, err = read(fd, p)
if raceenabled {
if n > 0 {
raceWriteRange(unsafe.Pointer(&p[0]), n)
}
if err == nil {
raceAcquire(unsafe.Pointer(&ioSync))
}
}
return
}
func Write(fd int, p []byte) (n int, err error) {
if raceenabled {
raceReleaseMerge(unsafe.Pointer(&ioSync))
}
n, err = write(fd, p)
if raceenabled && n > 0 {
raceReadRange(unsafe.Pointer(&p[0]), n)
}
return
}
// For testing: clients can set this flag to force
// creation of IPv6 sockets to return EAFNOSUPPORT.
var SocketDisableIPv6 bool
// Sockaddr represents a socket address.
type Sockaddr interface {
sockaddr() (ptr unsafe.Pointer, len _Socklen, err error) // lowercase; only we can define Sockaddrs
}
// SockaddrInet4 implements the Sockaddr interface for AF_INET type sockets.
type SockaddrInet4 struct {
Port int
Addr [4]byte
raw RawSockaddrInet4
}
// SockaddrInet6 implements the Sockaddr interface for AF_INET6 type sockets.
type SockaddrInet6 struct {
Port int
ZoneId uint32
Addr [16]byte
raw RawSockaddrInet6
}
// SockaddrUnix implements the Sockaddr interface for AF_UNIX type sockets.
type SockaddrUnix struct {
Name string
raw RawSockaddrUnix
}
func Bind(fd int, sa Sockaddr) (err error) {
ptr, n, err := sa.sockaddr()
if err != nil {
return err
}
return bind(fd, ptr, n)
}
func Connect(fd int, sa Sockaddr) (err error) {
ptr, n, err := sa.sockaddr()
if err != nil {
return err
}
return connect(fd, ptr, n)
}
func Getpeername(fd int) (sa Sockaddr, err error) {
var rsa RawSockaddrAny
var len _Socklen = SizeofSockaddrAny
if err = getpeername(fd, &rsa, &len); err != nil {
return
}
return anyToSockaddr(fd, &rsa)
}
func GetsockoptByte(fd, level, opt int) (value byte, err error) {
var n byte
vallen := _Socklen(1)
err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen)
return n, err
}
func GetsockoptInt(fd, level, opt int) (value int, err error) {
var n int32
vallen := _Socklen(4)
err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen)
return int(n), err
}
func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, err error) {
vallen := _Socklen(4)
err = getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen)
return value, err
}
func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, error) {
var value IPMreq
vallen := _Socklen(SizeofIPMreq)
err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
return &value, err
}
func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, error) {
var value IPv6Mreq
vallen := _Socklen(SizeofIPv6Mreq)
err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
return &value, err
}
func GetsockoptIPv6MTUInfo(fd, level, opt int) (*IPv6MTUInfo, error) {
var value IPv6MTUInfo
vallen := _Socklen(SizeofIPv6MTUInfo)
err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
return &value, err
}
func GetsockoptICMPv6Filter(fd, level, opt int) (*ICMPv6Filter, error) {
var value ICMPv6Filter
vallen := _Socklen(SizeofICMPv6Filter)
err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
return &value, err
}
func GetsockoptLinger(fd, level, opt int) (*Linger, error) {
var linger Linger
vallen := _Socklen(SizeofLinger)
err := getsockopt(fd, level, opt, unsafe.Pointer(&linger), &vallen)
return &linger, err
}
func GetsockoptTimeval(fd, level, opt int) (*Timeval, error) {
var tv Timeval
vallen := _Socklen(unsafe.Sizeof(tv))
err := getsockopt(fd, level, opt, unsafe.Pointer(&tv), &vallen)
return &tv, err
}
func GetsockoptUint64(fd, level, opt int) (value uint64, err error) {
var n uint64
vallen := _Socklen(8)
err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen)
return n, err
}
func Recvfrom(fd int, p []byte, flags int) (n int, from Sockaddr, err error) {
var rsa RawSockaddrAny
var len _Socklen = SizeofSockaddrAny
if n, err = recvfrom(fd, p, flags, &rsa, &len); err != nil {
return
}
if rsa.Addr.Family != AF_UNSPEC {
from, err = anyToSockaddr(fd, &rsa)
}
return
}
func Sendto(fd int, p []byte, flags int, to Sockaddr) (err error) {
ptr, n, err := to.sockaddr()
if err != nil {
return err
}
return sendto(fd, p, flags, ptr, n)
}
func SetsockoptByte(fd, level, opt int, value byte) (err error) {
return setsockopt(fd, level, opt, unsafe.Pointer(&value), 1)
}
func SetsockoptInt(fd, level, opt int, value int) (err error) {
var n = int32(value)
return setsockopt(fd, level, opt, unsafe.Pointer(&n), 4)
}
func SetsockoptInet4Addr(fd, level, opt int, value [4]byte) (err error) {
return setsockopt(fd, level, opt, unsafe.Pointer(&value[0]), 4)
}
func SetsockoptIPMreq(fd, level, opt int, mreq *IPMreq) (err error) {
return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPMreq)
}
func SetsockoptIPv6Mreq(fd, level, opt int, mreq *IPv6Mreq) (err error) {
return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPv6Mreq)
}
func SetsockoptICMPv6Filter(fd, level, opt int, filter *ICMPv6Filter) error {
return setsockopt(fd, level, opt, unsafe.Pointer(filter), SizeofICMPv6Filter)
}
func SetsockoptLinger(fd, level, opt int, l *Linger) (err error) {
return setsockopt(fd, level, opt, unsafe.Pointer(l), SizeofLinger)
}
func SetsockoptString(fd, level, opt int, s string) (err error) {
var p unsafe.Pointer
if len(s) > 0 {
p = unsafe.Pointer(&[]byte(s)[0])
}
return setsockopt(fd, level, opt, p, uintptr(len(s)))
}
func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (err error) {
return setsockopt(fd, level, opt, unsafe.Pointer(tv), unsafe.Sizeof(*tv))
}
func SetsockoptUint64(fd, level, opt int, value uint64) (err error) {
return setsockopt(fd, level, opt, unsafe.Pointer(&value), 8)
}
func Socket(domain, typ, proto int) (fd int, err error) {
if domain == AF_INET6 && SocketDisableIPv6 {
return -1, EAFNOSUPPORT
}
fd, err = socket(domain, typ, proto)
return
}
func Socketpair(domain, typ, proto int) (fd [2]int, err error) {
var fdx [2]int32
err = socketpair(domain, typ, proto, &fdx)
if err == nil {
fd[0] = int(fdx[0])
fd[1] = int(fdx[1])
}
return
}
var ioSync int64
func CloseOnExec(fd int) { fcntl(fd, F_SETFD, FD_CLOEXEC) }
func SetNonblock(fd int, nonblocking bool) (err error) {
flag, err := fcntl(fd, F_GETFL, 0)
if err != nil {
return err
}
if nonblocking {
flag |= O_NONBLOCK
} else {
flag &= ^O_NONBLOCK
}
_, err = fcntl(fd, F_SETFL, flag)
return err
}
// Exec calls execve(2), which replaces the calling executable in the process
// tree. argv0 should be the full path to an executable ("/bin/ls") and the
// executable name should also be the first argument in argv (["ls", "-l"]).
// envv are the environment variables that should be passed to the new
// process (["USER=go", "PWD=/tmp"]).
func Exec(argv0 string, argv []string, envv []string) error {
return syscall.Exec(argv0, argv, envv)
}
func Getag(path string) (ccsid uint16, flag uint16, err error) {
var val [8]byte
sz, err := Getxattr(path, "ccsid", val[:])
if err != nil {
return
}
ccsid = uint16(EncodeData(val[0:sz]))
sz, err = Getxattr(path, "flags", val[:])
if err != nil {
return
}
flag = uint16(EncodeData(val[0:sz]) >> 15)
return
}
// Mount begin
func impl_Mount(source string, target string, fstype string, flags uintptr, data string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(source)
if err != nil {
return
}
var _p1 *byte
_p1, err = BytePtrFromString(target)
if err != nil {
return
}
var _p2 *byte
_p2, err = BytePtrFromString(fstype)
if err != nil {
return
}
var _p3 *byte
_p3, err = BytePtrFromString(data)
if err != nil {
return
}
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MOUNT1_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(_p3)))
runtime.ExitSyscall()
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
}
return
}
//go:nosplit
func get_MountAddr() *(func(source string, target string, fstype string, flags uintptr, data string) (err error))
var Mount = enter_Mount
func enter_Mount(source string, target string, fstype string, flags uintptr, data string) (err error) {
funcref := get_MountAddr()
if validMount() {
*funcref = impl_Mount
} else {
*funcref = legacyMount
}
return (*funcref)(source, target, fstype, flags, data)
}
func legacyMount(source string, target string, fstype string, flags uintptr, data string) (err error) {
if needspace := 8 - len(fstype); needspace <= 0 {
fstype = fstype[0:8]
} else {
fstype += " "[0:needspace]
}
return mount_LE(target, source, fstype, uint32(flags), int32(len(data)), data)
}
func validMount() bool {
if funcptrtest(GetZosLibVec()+SYS___MOUNT1_A<<4, "") == 0 {
if name, err := getLeFuncName(GetZosLibVec() + SYS___MOUNT1_A<<4); err == nil {
return name == "__mount1_a"
}
}
return false
}
// Mount end
// Unmount begin
func impl_Unmount(target string, flags int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(target)
if err != nil {
return
}
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___UMOUNT2_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(flags))
runtime.ExitSyscall()
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
}
return
}
//go:nosplit
func get_UnmountAddr() *(func(target string, flags int) (err error))
var Unmount = enter_Unmount
func enter_Unmount(target string, flags int) (err error) {
funcref := get_UnmountAddr()
if funcptrtest(GetZosLibVec()+SYS___UMOUNT2_A<<4, "") == 0 {
*funcref = impl_Unmount
} else {
*funcref = legacyUnmount
}
return (*funcref)(target, flags)
}
func legacyUnmount(name string, mtm int) (err error) {
// mountpoint is always a full path and starts with a '/'
// check if input string is not a mountpoint but a filesystem name
if name[0] != '/' {
return unmount_LE(name, mtm)
}
// treat name as mountpoint
b2s := func(arr []byte) string {
var str string
for i := 0; i < len(arr); i++ {
if arr[i] == 0 {
str = string(arr[:i])
break
}
}
return str
}
var buffer struct {
header W_Mnth
fsinfo [64]W_Mntent
}
fs_count, err := W_Getmntent_A((*byte)(unsafe.Pointer(&buffer)), int(unsafe.Sizeof(buffer)))
if err == nil {
err = EINVAL
for i := 0; i < fs_count; i++ {
if b2s(buffer.fsinfo[i].Mountpoint[:]) == name {
err = unmount_LE(b2s(buffer.fsinfo[i].Fsname[:]), mtm)
break
}
}
} else if fs_count == 0 {
err = EINVAL
}
return err
}
// Unmount end
func direntIno(buf []byte) (uint64, bool) {
return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
}
func direntReclen(buf []byte) (uint64, bool) {
return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
}
func direntNamlen(buf []byte) (uint64, bool) {
reclen, ok := direntReclen(buf)
if !ok {
return 0, false
}
return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
}
func direntLeToDirentUnix(dirent *direntLE, dir uintptr, path string) (Dirent, error) {
var d Dirent
d.Ino = uint64(dirent.Ino)
offset, err := Telldir(dir)
if err != nil {
return d, err
}
d.Off = int64(offset)
s := string(bytes.Split(dirent.Name[:], []byte{0})[0])
copy(d.Name[:], s)
d.Reclen = uint16(24 + len(d.NameString()))
var st Stat_t
path = path + "/" + s
err = Lstat(path, &st)
if err != nil {
return d, err
}
d.Type = uint8(st.Mode >> 24)
return d, err
}
func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
// Simulation of Getdirentries port from the Darwin implementation.
// COMMENTS FROM DARWIN:
// It's not the full required semantics, but should handle the case
// of calling Getdirentries or ReadDirent repeatedly.
// It won't handle assigning the results of lseek to *basep, or handle
// the directory being edited underfoot.
skip, err := Seek(fd, 0, 1 /* SEEK_CUR */)
if err != nil {
return 0, err
}
// Get path from fd to avoid unavailable call (fdopendir)
path, err := ZosFdToPath(fd)
if err != nil {
return 0, err
}
d, err := Opendir(path)
if err != nil {
return 0, err
}
defer Closedir(d)
var cnt int64
for {
var entryLE direntLE
var entrypLE *direntLE
e := Readdir_r(d, &entryLE, &entrypLE)
if e != nil {
return n, e
}
if entrypLE == nil {
break
}
if skip > 0 {
skip--
cnt++
continue
}
// Dirent on zos has a different structure
entry, e := direntLeToDirentUnix(&entryLE, d, path)
if e != nil {
return n, e
}
reclen := int(entry.Reclen)
if reclen > len(buf) {
// Not enough room. Return for now.
// The counter will let us know where we should start up again.
// Note: this strategy for suspending in the middle and
// restarting is O(n^2) in the length of the directory. Oh well.
break
}
// Copy entry into return buffer.
s := unsafe.Slice((*byte)(unsafe.Pointer(&entry)), reclen)
copy(buf, s)
buf = buf[reclen:]
n += reclen
cnt++
}
// Set the seek offset of the input fd to record
// how many files we've already returned.
_, err = Seek(fd, cnt, 0 /* SEEK_SET */)
if err != nil {
return n, err
}
return n, nil
}
func Err2ad() (eadd *int) {
r0, _, _ := CallLeFuncWithErr(GetZosLibVec() + SYS___ERR2AD<<4)
eadd = (*int)(unsafe.Pointer(r0))
return
}
func ZosConsolePrintf(format string, v ...interface{}) (int, error) {
type __cmsg struct {
_ uint16
_ [2]uint8
__msg_length uint32
__msg uintptr
_ [4]uint8
}
msg := fmt.Sprintf(format, v...)
strptr := unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&msg)).Data)
len := (*reflect.StringHeader)(unsafe.Pointer(&msg)).Len
cmsg := __cmsg{__msg_length: uint32(len), __msg: uintptr(strptr)}
cmd := uint32(0)
runtime.EnterSyscall()
rc, err2, err1 := CallLeFuncWithErr(GetZosLibVec()+SYS_____CONSOLE_A<<4, uintptr(unsafe.Pointer(&cmsg)), 0, uintptr(unsafe.Pointer(&cmd)))
runtime.ExitSyscall()
if rc != 0 {
return 0, fmt.Errorf("%s (errno2=0x%x)\n", err1.Error(), err2)
}
return 0, nil
}
func ZosStringToEbcdicBytes(str string, nullterm bool) (ebcdicBytes []byte) {
if nullterm {
ebcdicBytes = []byte(str + "\x00")
} else {
ebcdicBytes = []byte(str)
}
A2e(ebcdicBytes)
return
}
func ZosEbcdicBytesToString(b []byte, trimRight bool) (str string) {
res := make([]byte, len(b))
copy(res, b)
E2a(res)
if trimRight {
str = string(bytes.TrimRight(res, " \x00"))
} else {
str = string(res)
}
return
}
func fdToPath(dirfd int) (path string, err error) {
var buffer [1024]byte
// w_ctrl()
ret := runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS_W_IOCTL<<4,
[]uintptr{uintptr(dirfd), 17, 1024, uintptr(unsafe.Pointer(&buffer[0]))})
if ret == 0 {
zb := bytes.IndexByte(buffer[:], 0)
if zb == -1 {
zb = len(buffer)
}
// __e2a_l()
runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4,
[]uintptr{uintptr(unsafe.Pointer(&buffer[0])), uintptr(zb)})
return string(buffer[:zb]), nil
}
// __errno()
errno := int(*(*int32)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4,
[]uintptr{}))))
// __errno2()
errno2 := int(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO2<<4,
[]uintptr{}))
// strerror_r()
ret = runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS_STRERROR_R<<4,
[]uintptr{uintptr(errno), uintptr(unsafe.Pointer(&buffer[0])), 1024})
if ret == 0 {
zb := bytes.IndexByte(buffer[:], 0)
if zb == -1 {
zb = len(buffer)
}
return "", fmt.Errorf("%s (errno2=0x%x)", buffer[:zb], errno2)
} else {
return "", fmt.Errorf("fdToPath errno %d (errno2=0x%x)", errno, errno2)
}
}
func impl_Mkfifoat(dirfd int, path string, mode uint32) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
runtime.EnterSyscall()
r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MKFIFOAT_A<<4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
runtime.ExitSyscall()
if int64(r0) == -1 {
err = errnoErr2(e1, e2)
}
return
}
//go:nosplit
func get_MkfifoatAddr() *(func(dirfd int, path string, mode uint32) (err error))
var Mkfifoat = enter_Mkfifoat
func enter_Mkfifoat(dirfd int, path string, mode uint32) (err error) {
funcref := get_MkfifoatAddr()
if funcptrtest(GetZosLibVec()+SYS___MKFIFOAT_A<<4, "") == 0 {
*funcref = impl_Mkfifoat
} else {
*funcref = legacy_Mkfifoat
}
return (*funcref)(dirfd, path, mode)
}
func legacy_Mkfifoat(dirfd int, path string, mode uint32) (err error) {
dirname, err := ZosFdToPath(dirfd)
if err != nil {
return err
}
return Mkfifo(dirname+"/"+path, mode)
}
//sys Posix_openpt(oflag int) (fd int, err error) = SYS_POSIX_OPENPT
//sys Grantpt(fildes int) (rc int, err error) = SYS_GRANTPT
//sys Unlockpt(fildes int) (rc int, err error) = SYS_UNLOCKPT
|