File: options.c

package info (click to toggle)
rsync 3.1.3-6
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 3,888 kB
  • sloc: ansic: 40,820; sh: 5,508; perl: 1,932; makefile: 326; python: 83
file content (2917 lines) | stat: -rw-r--r-- 97,282 bytes parent folder | download
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
/*
 * Command-line (and received via daemon-socket) option parsing.
 *
 * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
 * Copyright (C) 2000, 2001, 2002 Martin Pool <mbp@samba.org>
 * Copyright (C) 2002-2018 Wayne Davison
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, visit the http://fsf.org website.
 */

#include "rsync.h"
#include "itypes.h"
#include <popt.h>
#include <zlib.h>

extern int module_id;
extern int local_server;
extern int sanitize_paths;
extern int daemon_over_rsh;
extern unsigned int module_dirlen;
extern filter_rule_list filter_list;
extern filter_rule_list daemon_filter_list;

#define NOT_SPECIFIED (-42)

int make_backups = 0;

/**
 * If 1, send the whole file as literal data rather than trying to
 * create an incremental diff.
 *
 * If -1, then look at whether we're local or remote and go by that.
 *
 * @sa disable_deltas_p()
 **/
int whole_file = -1;

int append_mode = 0;
int keep_dirlinks = 0;
int copy_dirlinks = 0;
int copy_links = 0;
int preserve_links = 0;
int preserve_hard_links = 0;
int preserve_acls = 0;
int preserve_xattrs = 0;
int preserve_perms = 0;
int preserve_executability = 0;
int preserve_devices = 0;
int preserve_specials = 0;
int preserve_uid = 0;
int preserve_gid = 0;
int preserve_times = 0;
int update_only = 0;
int cvs_exclude = 0;
int dry_run = 0;
int do_xfers = 1;
int ignore_times = 0;
int delete_mode = 0;
int delete_during = 0;
int delete_before = 0;
int delete_after = 0;
int delete_excluded = 0;
int remove_source_files = 0;
int one_file_system = 0;
int protocol_version = PROTOCOL_VERSION;
int sparse_files = 0;
int preallocate_files = 0;
int do_compression = 0;
int def_compress_level = NOT_SPECIFIED;
int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
int am_server = 0;
int am_sender = 0;
int am_starting_up = 1;
int relative_paths = -1;
int implied_dirs = 1;
int missing_args = 0; /* 0 = FERROR_XFER, 1 = ignore, 2 = delete */
int numeric_ids = 0;
int msgs2stderr = 0;
int allow_8bit_chars = 0;
int force_delete = 0;
int io_timeout = 0;
int prune_empty_dirs = 0;
int use_qsort = 0;
char *files_from = NULL;
int filesfrom_fd = -1;
char *filesfrom_host = NULL;
int eol_nulls = 0;
int protect_args = -1;
int human_readable = 1;
int recurse = 0;
int allow_inc_recurse = 1;
int xfer_dirs = -1;
int am_daemon = 0;
int connect_timeout = 0;
int keep_partial = 0;
int safe_symlinks = 0;
int copy_unsafe_links = 0;
int munge_symlinks = 0;
int size_only = 0;
int daemon_bwlimit = 0;
int bwlimit = 0;
int fuzzy_basis = 0;
size_t bwlimit_writemax = 0;
int ignore_existing = 0;
int ignore_non_existing = 0;
int need_messages_from_generator = 0;
int max_delete = INT_MIN;
OFF_T max_size = -1;
OFF_T min_size = -1;
int ignore_errors = 0;
int modify_window = 0;
int blocking_io = -1;
int checksum_seed = 0;
int inplace = 0;
int delay_updates = 0;
long block_size = 0; /* "long" because popt can't set an int32. */
char *skip_compress = NULL;
item_list dparam_list = EMPTY_ITEM_LIST;

/** Network address family. **/
int default_af_hint
#ifdef INET6
	= 0;		/* Any protocol */
#else
	= AF_INET;	/* Must use IPv4 */
# ifdef AF_INET6
#  undef AF_INET6
# endif
# define AF_INET6 AF_INET /* make -6 option a no-op */
#endif

/** Do not go into the background when run as --daemon.  Good
 * for debugging and required for running as a service on W32,
 * or under Unix process-monitors. **/
int no_detach
#if defined _WIN32 || defined __WIN32__
	= 1;
#else
	= 0;
#endif

int write_batch = 0;
int read_batch = 0;
int backup_dir_len = 0;
int backup_suffix_len;
unsigned int backup_dir_remainder;

char *backup_suffix = NULL;
char *tmpdir = NULL;
char *partial_dir = NULL;
char *basis_dir[MAX_BASIS_DIRS+1];
char *config_file = NULL;
char *shell_cmd = NULL;
char *logfile_name = NULL;
char *logfile_format = NULL;
char *stdout_format = NULL;
char *password_file = NULL;
char *rsync_path = RSYNC_PATH;
char *backup_dir = NULL;
char backup_dir_buf[MAXPATHLEN];
char *sockopts = NULL;
char *usermap = NULL;
char *groupmap = NULL;
int rsync_port = 0;
int compare_dest = 0;
int copy_dest = 0;
int link_dest = 0;
int basis_dir_cnt = 0;
char *dest_option = NULL;

static int remote_option_alloc = 0;
int remote_option_cnt = 0;
const char **remote_options = NULL;
const char *checksum_choice = NULL;

int quiet = 0;
int output_motd = 1;
int log_before_transfer = 0;
int stdout_format_has_i = 0;
int stdout_format_has_o_or_i = 0;
int logfile_format_has_i = 0;
int logfile_format_has_o_or_i = 0;
int always_checksum = 0;
int list_only = 0;

#define MAX_BATCH_NAME_LEN 256	/* Must be less than MAXPATHLEN-13 */
char *batch_name = NULL;

int need_unsorted_flist = 0;
#ifdef ICONV_OPTION
char *iconv_opt = ICONV_OPTION;
#endif

struct chmod_mode_struct *chmod_modes = NULL;

static const char *debug_verbosity[] = {
	/*0*/ NULL,
	/*1*/ NULL,
	/*2*/ "BIND,CMD,CONNECT,DEL,DELTASUM,DUP,FILTER,FLIST,ICONV",
	/*3*/ "ACL,BACKUP,CONNECT2,DELTASUM2,DEL2,EXIT,FILTER2,FLIST2,FUZZY,GENR,OWN,RECV,SEND,TIME",
	/*4*/ "CMD2,DELTASUM3,DEL3,EXIT2,FLIST3,ICONV2,OWN2,PROTO,TIME2",
	/*5*/ "CHDIR,DELTASUM4,FLIST4,FUZZY2,HASH,HLINK",
};

#define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)

static const char *info_verbosity[1+MAX_VERBOSITY] = {
	/*0*/ NULL,
	/*1*/ "COPY,DEL,FLIST,MISC,NAME,STATS,SYMSAFE",
	/*2*/ "BACKUP,MISC2,MOUNT,NAME2,REMOVE,SKIP",
};

#define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */

short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];

#define DEFAULT_PRIORITY 0 	/* Default/implied/--verbose set values. */
#define HELP_PRIORITY 1		/* The help output uses this level. */
#define USER_PRIORITY 2		/* User-specified via --info or --debug */
#define LIMIT_PRIORITY 3	/* Overriding priority when limiting values. */

#define W_CLI (1<<0)	/* client side */
#define W_SRV (1<<1)	/* server side */
#define W_SND (1<<2)	/* sending side */
#define W_REC (1<<3)	/* receiving side */

struct output_struct {
	char *name;	/* The name of the info/debug flag. */
	char *help;	/* The description of the info/debug flag. */
	uchar namelen;  /* The length of the name string. */
	uchar flag;	/* The flag's value, for consistency check. */
	uchar where;	/* Bits indicating where the flag is used. */
	uchar priority; /* See *_PRIORITY defines. */
};

#define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }

static struct output_struct info_words[COUNT_INFO+1] = {
	INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
	INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
	INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
	INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
	INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information (levels 1-2)"),
	INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
	INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
	INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
	INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
	INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
	INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
	INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
	{ NULL, "--info", 0, 0, 0, 0 }
};

#define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }

static struct output_struct debug_words[COUNT_DEBUG+1] = {
	DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
	DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
	DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
	DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
	DEBUG_WORD(CONNECT, W_CLI, "Debug connection events (levels 1-2)"),
	DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
	DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
	DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
	DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
	DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-3)"),
	DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
	DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
	DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
	DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
	DEBUG_WORD(HASH, W_SND|W_REC, "Debug hashtable code"),
	DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions (levels 1-3)"),
	DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv character conversions (levels 1-2)"),
	DEBUG_WORD(IO, W_CLI|W_SRV, "Debug I/O routines (levels 1-4)"),
	DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
	DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
	DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
	DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
	DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
	{ NULL, "--debug", 0, 0, 0, 0 }
};

static int verbose = 0;
static int do_stats = 0;
static int do_progress = 0;
static int daemon_opt;   /* sets am_daemon after option error-reporting */
static int omit_dir_times = 0;
static int omit_link_times = 0;
static int F_option_cnt = 0;
static int modify_window_set;
static int itemize_changes = 0;
static int refused_delete, refused_archive_part, refused_compress;
static int refused_partial, refused_progress, refused_delete_before;
static int refused_delete_during;
static int refused_inplace, refused_no_iconv;
static BOOL usermap_via_chown, groupmap_via_chown;
#ifdef HAVE_SETVBUF
static char *outbuf_mode;
#endif
static char *bwlimit_arg, *max_size_arg, *min_size_arg;
static char tmp_partialdir[] = ".~tmp~";

/** Local address to bind.  As a character string because it's
 * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 * address, or a hostname. **/
char *bind_address;

static void output_item_help(struct output_struct *words);

/* This constructs a string that represents all the options set for either
 * the --info or --debug setting, skipping any implied options (by -v, etc.).
 * This is used both when conveying the user's options to the server, and
 * when the help output wants to tell the user what options are implied. */
static char *make_output_option(struct output_struct *words, short *levels, uchar where)
{
	char *str = words == info_words ? "--info=" : "--debug=";
	int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
	int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
	char *buf;

	memset(counts, 0, sizeof counts);

	for (j = 0; words[j].name; j++) {
		if (words[j].flag != j) {
			rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
				words == info_words ? "INFO_" : "DEBUG_",
				words[j].name, words[j].flag, j);
			exit_cleanup(RERR_UNSUPPORTED);
		}
		if (!(words[j].where & where))
			continue;
		if (words[j].priority == DEFAULT_PRIORITY) {
			/* Implied items don't need to be mentioned. */
			skipped++;
			continue;
		}
		len += len ? 1 : strlen(str);
		len += strlen(words[j].name);
		len += levels[j] == 1 ? 0 : 1;

		if (words[j].priority == HELP_PRIORITY)
			continue; /* no abbreviating for help */

		assert(levels[j] <= MAX_OUT_LEVEL);
		if (++counts[levels[j]] > max) {
			/* Determine which level has the most items. */
			lev = levels[j];
			max = counts[lev];
		}
	}

	/* Sanity check the COUNT_* define against the length of the table. */
	if (j != word_count) {
		rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
			words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
			j, word_count);
		exit_cleanup(RERR_UNSUPPORTED);
	}

	if (!len)
		return NULL;

	len++;
	if (!(buf = new_array(char, len)))
		out_of_memory("make_output_option");
	pos = 0;

	if (skipped || max < 5)
		lev = -1;
	else {
		if (lev == 0)
			pos += snprintf(buf, len, "%sNONE", str);
		else if (lev == 1)
			pos += snprintf(buf, len, "%sALL", str);
		else
			pos += snprintf(buf, len, "%sALL%d", str, lev);
	}

	for (j = 0; words[j].name && pos < len; j++) {
		if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
			continue;
		if (pos)
			buf[pos++] = ',';
		else
			pos += strlcpy(buf+pos, str, len-pos);
		if (pos < len)
			pos += strlcpy(buf+pos, words[j].name, len-pos);
		/* Level 1 is implied by the name alone. */
		if (levels[j] != 1 && pos < len)
			buf[pos++] = '0' + levels[j];
	}

	buf[pos] = '\0';

	return buf;
}

static void parse_output_words(struct output_struct *words, short *levels,
			       const char *str, uchar priority)
{
	const char *s;
	int j, len, lev;

	for ( ; str; str = s) {
		if ((s = strchr(str, ',')) != NULL)
			len = s++ - str;
		else
			len = strlen(str);
		if (!len)
			continue;
		if (!isDigit(str)) {
			while (len && isDigit(str+len-1))
				len--;
		}
		lev = isDigit(str+len) ? atoi(str+len) : 1;
		if (lev > MAX_OUT_LEVEL)
			lev = MAX_OUT_LEVEL;
		if (len == 4 && strncasecmp(str, "help", 4) == 0) {
			output_item_help(words);
			exit_cleanup(0);
		}
		if (len == 4 && strncasecmp(str, "none", 4) == 0)
			len = lev = 0;
		else if (len == 3 && strncasecmp(str, "all", 3) == 0)
			len = 0;
		for (j = 0; words[j].name; j++) {
			if (!len
			 || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
				if (priority >= words[j].priority) {
					words[j].priority = priority;
					levels[j] = lev;
				}
				if (len)
					break;
			}
		}
		if (len && !words[j].name) {
			rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
				words[j].help, len, str);
			exit_cleanup(RERR_SYNTAX);
		}
	}
}

/* Tell the user what all the info or debug flags mean. */
static void output_item_help(struct output_struct *words)
{
	short *levels = words == info_words ? info_levels : debug_levels;
	const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
	char buf[128], *opt, *fmt = "%-10s %s\n";
	int j;

	reset_output_levels();

	rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
	rprintf(FINFO, "\n");
	for (j = 0; words[j].name; j++)
		rprintf(FINFO, fmt, words[j].name, words[j].help);
	rprintf(FINFO, "\n");

	snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
		 words[j].help, MAX_OUT_LEVEL);
	rprintf(FINFO, fmt, "ALL", buf);

	snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
		 words[j].help);
	rprintf(FINFO, fmt, "NONE", buf);

	rprintf(FINFO, fmt, "HELP", "Output this help message");
	rprintf(FINFO, "\n");
	rprintf(FINFO, "Options added for each increase in verbose level:\n");

	for (j = 1; j <= MAX_VERBOSITY; j++) {
		parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
		opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
		if (opt) {
			rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
			free(opt);
		}
		reset_output_levels();
	}
}

/* The --verbose option now sets info+debug flags. */
static void set_output_verbosity(int level, uchar priority)
{
	int j;

	if (level > MAX_VERBOSITY)
		level = MAX_VERBOSITY;

	for (j = 1; j <= level; j++) {
		parse_output_words(info_words, info_levels, info_verbosity[j], priority);
		parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
	}
}

/* Limit the info+debug flag levels given a verbose-option level limit. */
void limit_output_verbosity(int level)
{
	short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
	int j;

	if (level > MAX_VERBOSITY)
		return;

	memset(info_limits, 0, sizeof info_limits);
	memset(debug_limits, 0, sizeof debug_limits);

	/* Compute the level limits in the above arrays. */
	for (j = 1; j <= level; j++) {
		parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
		parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
	}

	for (j = 0; j < COUNT_INFO; j++) {
		if (info_levels[j] > info_limits[j])
			info_levels[j] = info_limits[j];
	}

	for (j = 0; j < COUNT_DEBUG; j++) {
		if (debug_levels[j] > debug_limits[j])
			debug_levels[j] = debug_limits[j];
	}
}

void reset_output_levels(void)
{
	int j;

	memset(info_levels, 0, sizeof info_levels);
	memset(debug_levels, 0, sizeof debug_levels);

	for (j = 0; j < COUNT_INFO; j++)
		info_words[j].priority = DEFAULT_PRIORITY;

	for (j = 0; j < COUNT_DEBUG; j++)
		debug_words[j].priority = DEFAULT_PRIORITY;
}

void negate_output_levels(void)
{
	int j;

	for (j = 0; j < COUNT_INFO; j++)
		info_levels[j] *= -1;

	for (j = 0; j < COUNT_DEBUG; j++)
		debug_levels[j] *= -1;
}

static void print_rsync_version(enum logcode f)
{
	char *subprotocol = "";
	char const *got_socketpair = "no ";
	char const *have_inplace = "no ";
	char const *hardlinks = "no ";
	char const *prealloc = "no ";
	char const *symtimes = "no ";
	char const *acls = "no ";
	char const *xattrs = "no ";
	char const *links = "no ";
	char const *iconv = "no ";
	char const *ipv6 = "no ";
	STRUCT_STAT *dumstat;

#if SUBPROTOCOL_VERSION != 0
	if (asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION) < 0)
		out_of_memory("print_rsync_version");
#endif
#ifdef HAVE_SOCKETPAIR
	got_socketpair = "";
#endif
#ifdef HAVE_FTRUNCATE
	have_inplace = "";
#endif
#ifdef SUPPORT_HARD_LINKS
	hardlinks = "";
#endif
#ifdef SUPPORT_PREALLOCATION
	prealloc = "";
#endif
#ifdef SUPPORT_ACLS
	acls = "";
#endif
#ifdef SUPPORT_XATTRS
	xattrs = "";
#endif
#ifdef SUPPORT_LINKS
	links = "";
#endif
#ifdef INET6
	ipv6 = "";
#endif
#ifdef ICONV_OPTION
	iconv = "";
#endif
#ifdef CAN_SET_SYMLINK_TIMES
	symtimes = "";
#endif

	rprintf(f, "%s  version %s  protocol version %d%s\n",
		RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
	rprintf(f, "Copyright (C) 1996-2018 by Andrew Tridgell, Wayne Davison, and others.\n");
	rprintf(f, "Web site: http://rsync.samba.org/\n");
	rprintf(f, "Capabilities:\n");
	rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
		(int)(sizeof (OFF_T) * 8),
		(int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
		(int)(sizeof (time_t) * 8),
		(int)(sizeof (int64) * 8));
	rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
		got_socketpair, hardlinks, links, ipv6, have_inplace);
	rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes, %sprealloc\n",
		have_inplace, acls, xattrs, iconv, symtimes, prealloc);

#ifdef MAINTAINER_MODE
	rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
#endif

#if SIZEOF_INT64 < 8
	rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
#endif
	if (sizeof (int64) != SIZEOF_INT64) {
		rprintf(f,
			"WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
			(int) SIZEOF_INT64, (int) sizeof (int64));
	}

	rprintf(f,"\n");
	rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
	rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
	rprintf(f,"General Public Licence for details.\n");
}


void usage(enum logcode F)
{
  print_rsync_version(F);

  rprintf(F,"\n");
  rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
  rprintf(F,"via a fast differencing algorithm.\n");

  rprintf(F,"\n");
  rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
  rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
  rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
  rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
  rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
  rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
  rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
  rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
  rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
  rprintf(F,"\n");
  rprintf(F,"Options\n");
  rprintf(F," -v, --verbose               increase verbosity\n");
  rprintf(F,"     --info=FLAGS            fine-grained informational verbosity\n");
  rprintf(F,"     --debug=FLAGS           fine-grained debug verbosity\n");
  rprintf(F,"     --msgs2stderr           special output handling for debugging\n");
  rprintf(F," -q, --quiet                 suppress non-error messages\n");
  rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
  rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
  rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
  rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
  rprintf(F," -r, --recursive             recurse into directories\n");
  rprintf(F," -R, --relative              use relative path names\n");
  rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
  rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
  rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
  rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
  rprintf(F," -u, --update                skip files that are newer on the receiver\n");
  rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
  rprintf(F,"     --append                append data onto shorter files\n");
  rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
  rprintf(F," -d, --dirs                  transfer directories without recursing\n");
  rprintf(F," -l, --links                 copy symlinks as symlinks\n");
  rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
  rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
  rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
  rprintf(F,"     --munge-links           munge symlinks to make them safer (but unusable)\n");
  rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
  rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
  rprintf(F," -H, --hard-links            preserve hard links\n");
  rprintf(F," -p, --perms                 preserve permissions\n");
  rprintf(F," -E, --executability         preserve the file's executability\n");
  rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
#ifdef SUPPORT_ACLS
  rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
#endif
#ifdef SUPPORT_XATTRS
  rprintf(F," -X, --xattrs                preserve extended attributes\n");
#endif
  rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
  rprintf(F," -g, --group                 preserve group\n");
  rprintf(F,"     --devices               preserve device files (super-user only)\n");
  rprintf(F,"     --specials              preserve special files\n");
  rprintf(F," -D                          same as --devices --specials\n");
  rprintf(F," -t, --times                 preserve modification times\n");
  rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
  rprintf(F," -J, --omit-link-times       omit symlinks from --times\n");
  rprintf(F,"     --super                 receiver attempts super-user activities\n");
#ifdef SUPPORT_XATTRS
  rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
#endif
  rprintf(F," -S, --sparse                turn sequences of nulls into sparse blocks\n");
#ifdef SUPPORT_PREALLOCATION
  rprintf(F,"     --preallocate           allocate dest files before writing them\n");
#else
  rprintf(F,"     --preallocate           pre-allocate dest files on remote receiver\n");
#endif
  rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
  rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
  rprintf(F,"     --checksum-choice=STR   choose the checksum algorithms\n");
  rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
  rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
  rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
  rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
  rprintf(F,"     --existing              skip creating new files on receiver\n");
  rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
  rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
  rprintf(F,"     --del                   an alias for --delete-during\n");
  rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
  rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
  rprintf(F,"     --delete-during         receiver deletes during the transfer\n");
  rprintf(F,"     --delete-delay          find deletions during, delete after\n");
  rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
  rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
  rprintf(F,"     --ignore-missing-args   ignore missing source args without error\n");
  rprintf(F,"     --delete-missing-args   delete missing source args from destination\n");
  rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
  rprintf(F,"     --force                 force deletion of directories even if not empty\n");
  rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
  rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
  rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
  rprintf(F,"     --partial               keep partially transferred files\n");
  rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
  rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
  rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
  rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
  rprintf(F,"     --usermap=STRING        custom username mapping\n");
  rprintf(F,"     --groupmap=STRING       custom groupname mapping\n");
  rprintf(F,"     --chown=USER:GROUP      simple username/groupname mapping\n");
  rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
  rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
  rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
  rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
  rprintf(F,"     --size-only             skip files that match in size\n");
  rprintf(F," -@, --modify-window=NUM     set the accuracy for mod-time comparisons\n");
  rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
  rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
  rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
  rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
  rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
  rprintf(F," -z, --compress              compress file data during the transfer\n");
  rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
  rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
  rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
  rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
  rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
  rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
  rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
  rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
  rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
  rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
  rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
  rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
  rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
  rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
  rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
  rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
  rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
  rprintf(F,"     --stats                 give some file-transfer stats\n");
  rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
  rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
  rprintf(F,"     --progress              show progress during transfer\n");
  rprintf(F," -P                          same as --partial --progress\n");
  rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
  rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
  rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
  rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
  rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
  rprintf(F,"     --list-only             list the files instead of copying them\n");
  rprintf(F,"     --bwlimit=RATE          limit socket I/O bandwidth\n");
#ifdef HAVE_SETVBUF
  rprintf(F,"     --outbuf=N|L|B          set output buffering to None, Line, or Block\n");
#endif
  rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
  rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
  rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
  rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
#ifdef ICONV_OPTION
  rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
#endif
  rprintf(F,"     --checksum-seed=NUM     set block/file checksum seed (advanced)\n");
  rprintf(F," -4, --ipv4                  prefer IPv4\n");
  rprintf(F," -6, --ipv6                  prefer IPv6\n");
  rprintf(F,"     --version               print version number\n");
  rprintf(F,"(-h) --help                  show this help (-h is --help only if used alone)\n");

  rprintf(F,"\n");
  rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
  rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
  rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
}

enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
      OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
      OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
      OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
      OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
      OPT_USERMAP, OPT_GROUPMAP, OPT_CHOWN, OPT_BWLIMIT,
      OPT_SERVER, OPT_REFUSED_BASE = 9000};

static struct poptOption long_options[] = {
  /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
  {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
  {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
  {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
  {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
  {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
  {"info",             0,  POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
  {"debug",            0,  POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
  {"msgs2stderr",      0,  POPT_ARG_NONE,   &msgs2stderr, 0, 0, 0 },
  {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
  {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
  {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
  {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
  {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
  {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
  {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
  {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
  {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
  {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
  {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
  {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
  {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
  {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
  {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
  {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
  {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
  {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
  {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
  {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
  {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
  {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
  {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
  {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
  {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
  {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
  {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
  {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
  {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
  {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
  {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
  {"times",           't', POPT_ARG_VAL,    &preserve_times, 1, 0, 0 },
  {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
  {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
  {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
  {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
  {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
  {"omit-link-times", 'J', POPT_ARG_VAL,    &omit_link_times, 1, 0, 0 },
  {"no-omit-link-times",0, POPT_ARG_VAL,    &omit_link_times, 0, 0, 0 },
  {"no-J",             0,  POPT_ARG_VAL,    &omit_link_times, 0, 0, 0 },
  {"modify-window",   '@', POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
  {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
  {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
  {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
  {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
  {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
  {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
  {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
  {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
  {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
  {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
  {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
  {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
  {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
  {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
  {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
  {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
  {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
  {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
  {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
  {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
  {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
  {"munge-links",      0,  POPT_ARG_VAL,    &munge_symlinks, 1, 0, 0 },
  {"no-munge-links",   0,  POPT_ARG_VAL,    &munge_symlinks, 0, 0, 0 },
  {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
  {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
  {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
  {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
  {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
  {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
  {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
  {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
  {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
  {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
  {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
  {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
  {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
  {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
  {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
  {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
  {"no-one-file-system",0, POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
  {"no-x",             0,  POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
  {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
  {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
  {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
  {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
  {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
  {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
  {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
  {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
  {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
  {"preallocate",      0,  POPT_ARG_NONE,   &preallocate_files, 0, 0, 0},
  {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
  {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
  {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
  {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
  {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
  {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
  {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
  {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
  {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
  {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
  {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
  {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
  {"delete-missing-args",0,POPT_BIT_SET,    &missing_args, 2, 0, 0 },
  {"ignore-missing-args",0,POPT_BIT_SET,    &missing_args, 1, 0, 0 },
  {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
  {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
  {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
  {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
  {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
  {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
  {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
  {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
  {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
  {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
  {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
  {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
  {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
  {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
  {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
  {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
  {"checksum-choice",  0,  POPT_ARG_STRING, &checksum_choice, 0, 0, 0 },
  {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
  {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
  {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
  {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
  {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
  {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
  {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
  {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
  {"fuzzy",           'y', POPT_ARG_NONE,   0, 'y', 0, 0 },
  {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
  {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
  {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
  {"old-compress",     0,  POPT_ARG_VAL,    &do_compression, 1, 0, 0 },
  {"new-compress",     0,  POPT_ARG_VAL,    &do_compression, 2, 0, 0 },
  {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
  {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
  {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
  {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 0, 0, 0 },
  {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
  {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
  {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
  {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
  {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
  {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
  {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
  {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
  {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
  {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
  {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
  {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
  {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
  {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
  {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
  {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
  {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
  {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
  {"bwlimit",          0,  POPT_ARG_STRING, &bwlimit_arg, OPT_BWLIMIT, 0, 0 },
  {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
  {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
  {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
  {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
  {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
  {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
  {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
  {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
  {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
  {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
  {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
  {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
  {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
  {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
  {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
  {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
  {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
  {"usermap",          0,  POPT_ARG_STRING, 0, OPT_USERMAP, 0, 0 },
  {"groupmap",         0,  POPT_ARG_STRING, 0, OPT_GROUPMAP, 0, 0 },
  {"chown",            0,  POPT_ARG_STRING, 0, OPT_CHOWN, 0, 0 },
  {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
  {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
  {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
  {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
  {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
  {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
  {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
#ifdef ICONV_OPTION
  {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
  {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
#endif
  {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
  {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
  {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
  {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
  {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
  {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
  {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
  {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
  {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
  {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
  {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
  {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
#ifdef HAVE_SETVBUF
  {"outbuf",           0,  POPT_ARG_STRING, &outbuf_mode, 0, 0, 0 },
#endif
  {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
  {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
  {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
  {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
  {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
  /* All the following options switch us into daemon-mode option-parsing. */
  {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
  {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
  {"dparam",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
  {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
  {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
  {0,0,0,0, 0, 0, 0}
};

static void daemon_usage(enum logcode F)
{
  print_rsync_version(F);

  rprintf(F,"\n");
  rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
  rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
  rprintf(F,"     --bwlimit=RATE          limit socket I/O bandwidth\n");
  rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
  rprintf(F," -M, --dparam=OVERRIDE       override global daemon config parameter\n");
  rprintf(F,"     --no-detach             do not detach from the parent\n");
  rprintf(F,"     --port=PORT             listen on alternate port number\n");
  rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
  rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
  rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
  rprintf(F," -v, --verbose               increase verbosity\n");
  rprintf(F," -4, --ipv4                  prefer IPv4\n");
  rprintf(F," -6, --ipv6                  prefer IPv6\n");
  rprintf(F,"     --help                  show this help screen\n");

  rprintf(F,"\n");
  rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
  rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
}

static struct poptOption long_daemon_options[] = {
  /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
  {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
  {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
  {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
  {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
  {"dparam",          'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
  {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
  {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
  {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
  {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
  {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
  {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
  {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
  {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
  {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
  {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
  {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
  {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
  {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
  {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
  {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
  {0,0,0,0, 0, 0, 0}
};


static char err_buf[200];


/**
 * Store the option error message, if any, so that we can log the
 * connection attempt (which requires parsing the options), and then
 * show the error later on.
 **/
void option_error(void)
{
	if (!err_buf[0]) {
		strlcpy(err_buf, "Error parsing options: option may "
			"be supported on client but not on server?\n",
			sizeof err_buf);
	}

	rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
	msleep(20);
}


/**
 * Tweak the option table to disable all options that the rsyncd.conf
 * file has told us to refuse.
 **/
static void set_refuse_options(char *bp)
{
	struct poptOption *op;
	char *cp, shortname[2];
	int is_wild, found_match;

	shortname[1] = '\0';

	while (1) {
		while (*bp == ' ') bp++;
		if (!*bp)
			break;
		if ((cp = strchr(bp, ' ')) != NULL)
			*cp= '\0';
		is_wild = strpbrk(bp, "*?[") != NULL;
		found_match = 0;
		for (op = long_options; ; op++) {
			*shortname = op->shortName;
			if (!op->longName && !*shortname)
				break;
			if ((op->longName && wildmatch(bp, op->longName))
			    || (*shortname && wildmatch(bp, shortname))) {
				if (op->argInfo == POPT_ARG_VAL)
					op->argInfo = POPT_ARG_NONE;
				op->val = (op - long_options) + OPT_REFUSED_BASE;
				found_match = 1;
				/* These flags are set to let us easily check
				 * an implied option later in the code. */
				switch (*shortname) {
				case 'r': case 'd': case 'l': case 'p':
				case 't': case 'g': case 'o': case 'D':
					refused_archive_part = op->val;
					break;
				case 'z':
					refused_compress = op->val;
					break;
				case '\0':
					if (wildmatch("delete", op->longName))
						refused_delete = op->val;
					else if (wildmatch("delete-before", op->longName))
						refused_delete_before = op->val;
					else if (wildmatch("delete-during", op->longName))
						refused_delete_during = op->val;
					else if (wildmatch("partial", op->longName))
						refused_partial = op->val;
					else if (wildmatch("progress", op->longName))
						refused_progress = op->val;
					else if (wildmatch("inplace", op->longName))
						refused_inplace = op->val;
					else if (wildmatch("no-iconv", op->longName))
						refused_no_iconv = op->val;
					break;
				}
				if (!is_wild)
					break;
			}
		}
		if (!found_match) {
			rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
				bp);
		}
		if (!cp)
			break;
		*cp = ' ';
		bp = cp + 1;
	}
}


static int count_args(const char **argv)
{
	int i = 0;

	if (argv) {
		while (argv[i] != NULL)
			i++;
	}

	return i;
}


static OFF_T parse_size_arg(char **size_arg, char def_suf)
{
	int reps, mult, make_compatible = 0;
	const char *arg;
	OFF_T size = 1;

	for (arg = *size_arg; isDigit(arg); arg++) {}
	if (*arg == '.')
		for (arg++; isDigit(arg); arg++) {}
	switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
	case 'b': case 'B':
		reps = 0;
		break;
	case 'k': case 'K':
		reps = 1;
		break;
	case 'm': case 'M':
		reps = 2;
		break;
	case 'g': case 'G':
		reps = 3;
		break;
	default:
		return -1;
	}
	if (*arg == 'b' || *arg == 'B')
		mult = 1000, make_compatible = 1, arg++;
	else if (!*arg || *arg == '+' || *arg == '-')
		mult = 1024;
	else if (strncasecmp(arg, "ib", 2) == 0)
		mult = 1024, arg += 2;
	else
		return -1;
	while (reps--)
		size *= mult;
	size *= atof(*size_arg);
	if ((*arg == '+' || *arg == '-') && arg[1] == '1')
		size += atoi(arg), make_compatible = 1, arg += 2;
	if (*arg)
		return -1;
	if (size > 0 && make_compatible && def_suf == 'b') {
		/* We convert this manually because we may need %lld precision,
		 * and that's not a portable sprintf() escape. */
		char buf[128], *s = buf + sizeof buf - 1;
		OFF_T num = size;
		*s = '\0';
		while (num) {
			*--s = (char)(num % 10) + '0';
			num /= 10;
		}
		if (!(*size_arg = strdup(s)))
			out_of_memory("parse_size_arg");
	}
	return size;
}


static void create_refuse_error(int which)
{
	/* The "which" value is the index + OPT_REFUSED_BASE. */
	struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
	int n = snprintf(err_buf, sizeof err_buf,
			 "The server is configured to refuse --%s\n",
			 op->longName) - 1;
	if (op->shortName) {
		snprintf(err_buf + n, sizeof err_buf - n,
			 " (-%c)\n", op->shortName);
	}
}

/* This is used to make sure that --daemon & --server cannot be aliased to
 * something else. These options have always disabled popt aliases for the
 * parsing of a daemon or server command-line, but we have to make sure that
 * these options cannot vanish so that the alias disabling can take effect. */
static void popt_unalias(poptContext con, const char *opt)
{
	struct poptAlias unalias;

	unalias.longName = opt + 2; /* point past the leading "--" */
	unalias.shortName = '\0';
	unalias.argc = 1;
	unalias.argv = new_array(const char*, 1);
	unalias.argv[0] = strdup(opt);

	poptAddAlias(con, unalias, 0);
}

/**
 * Process command line arguments.  Called on both local and remote.
 *
 * @retval 1 if all options are OK; with globals set to appropriate
 * values
 *
 * @retval 0 on error, with err_buf containing an explanation
 **/
int parse_arguments(int *argc_p, const char ***argv_p)
{
	static poptContext pc;
	char *ref = lp_refuse_options(module_id);
	const char *arg, **argv = *argv_p;
	int argc = *argc_p;
	int opt;
	int orig_protect_args = protect_args;

	if (ref && *ref)
		set_refuse_options(ref);
	if (am_daemon) {
		set_refuse_options("log-file*");
#ifdef ICONV_OPTION
		if (!*lp_charset(module_id))
			set_refuse_options("iconv");
#endif
	}

#ifdef ICONV_OPTION
	if (!am_daemon && protect_args <= 0 && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
		iconv_opt = strdup(arg);
#endif

	/* TODO: Call poptReadDefaultConfig; handle errors. */

	/* The context leaks in case of an error, but if there's a
	 * problem we always exit anyhow. */
	if (pc)
		poptFreeContext(pc);
	pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
	if (!am_server) {
		poptReadDefaultConfig(pc, 0);
		popt_unalias(pc, "--daemon");
		popt_unalias(pc, "--server");
	}

	while ((opt = poptGetNextOpt(pc)) != -1) {
		/* most options are handled automatically by popt;
		 * only special cases are returned and listed here. */

		switch (opt) {
		case OPT_VERSION:
			print_rsync_version(FINFO);
			exit_cleanup(0);

		case OPT_SERVER:
			if (!am_server) {
				/* Disable popt aliases on the server side and
				 * then start parsing the options again. */
				poptFreeContext(pc);
				pc = poptGetContext(RSYNC_NAME, argc, argv,
						    long_options, 0);
				am_server = 1;
			}
#ifdef ICONV_OPTION
			iconv_opt = NULL;
#endif
			break;

		case OPT_SENDER:
			if (!am_server) {
				usage(FERROR);
				exit_cleanup(RERR_SYNTAX);
			}
			am_sender = 1;
			break;

		case OPT_DAEMON:
			if (am_daemon) {
				strlcpy(err_buf,
					"Attempt to hack rsync thwarted!\n",
					sizeof err_buf);
				return 0;
			}
#ifdef ICONV_OPTION
			iconv_opt = NULL;
#endif
			protect_args = 0;
			poptFreeContext(pc);
			pc = poptGetContext(RSYNC_NAME, argc, argv,
					    long_daemon_options, 0);
			while ((opt = poptGetNextOpt(pc)) != -1) {
				char **cpp;
				switch (opt) {
				case 'h':
					daemon_usage(FINFO);
					exit_cleanup(0);

				case 'M':
					arg = poptGetOptArg(pc);
					if (!strchr(arg, '=')) {
						rprintf(FERROR,
						    "--dparam value is missing an '=': %s\n",
						    arg);
						goto daemon_error;
					}
					cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
					*cpp = strdup(arg);
					break;

				case 'v':
					verbose++;
					break;

				default:
					rprintf(FERROR,
					    "rsync: %s: %s (in daemon mode)\n",
					    poptBadOption(pc, POPT_BADOPTION_NOALIAS),
					    poptStrerror(opt));
					goto daemon_error;
				}
			}

			if (dparam_list.count && !set_dparams(1))
				exit_cleanup(RERR_SYNTAX);

			if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
				snprintf(err_buf, sizeof err_buf,
					 "the --temp-dir path is WAY too long.\n");
				return 0;
			}

			if (!daemon_opt) {
				rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
			    daemon_error:
				rprintf(FERROR,
				    "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
				exit_cleanup(RERR_SYNTAX);
			}

			*argv_p = argv = poptGetArgs(pc);
			*argc_p = argc = count_args(argv);
			am_starting_up = 0;
			daemon_opt = 0;
			am_daemon = 1;
			return 1;

		case OPT_MODIFY_WINDOW:
			/* The value has already been set by popt, but
			 * we need to remember that we're using a
			 * non-default setting. */
			modify_window_set = 1;
			break;

		case OPT_FILTER:
			parse_filter_str(&filter_list, poptGetOptArg(pc),
					rule_template(0), 0);
			break;

		case OPT_EXCLUDE:
			parse_filter_str(&filter_list, poptGetOptArg(pc),
					rule_template(0), XFLG_OLD_PREFIXES);
			break;

		case OPT_INCLUDE:
			parse_filter_str(&filter_list, poptGetOptArg(pc),
					rule_template(FILTRULE_INCLUDE), XFLG_OLD_PREFIXES);
			break;

		case OPT_EXCLUDE_FROM:
		case OPT_INCLUDE_FROM:
			arg = poptGetOptArg(pc);
			if (sanitize_paths)
				arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
			if (daemon_filter_list.head) {
				int rej;
				char *cp = strdup(arg);
				if (!cp)
					out_of_memory("parse_arguments");
				if (!*cp)
					rej = 1;
				else {
					char *dir = cp + (*cp == '/' ? module_dirlen : 0);
					clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
					rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
				}
				free(cp);
				if (rej)
					goto options_rejected;
			}
			parse_filter_file(&filter_list, arg,
				rule_template(opt == OPT_INCLUDE_FROM ? FILTRULE_INCLUDE : 0),
				XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
			break;

		case 'a':
			if (refused_archive_part) {
				create_refuse_error(refused_archive_part);
				return 0;
			}
			if (!recurse) /* preserve recurse == 2 */
				recurse = 1;
#ifdef SUPPORT_LINKS
			preserve_links = 1;
#endif
			preserve_perms = 1;
			preserve_times = 1;
			preserve_gid = 1;
			preserve_uid = 1;
			preserve_devices = 1;
			preserve_specials = 1;
			break;

		case 'D':
			preserve_devices = preserve_specials = 1;
			break;

		case OPT_NO_D:
			preserve_devices = preserve_specials = 0;
			break;

		case 'h':
			human_readable++;
			break;

		case 'H':
			preserve_hard_links++;
			break;

		case 'i':
			itemize_changes++;
			break;

		case 'v':
			verbose++;
			break;

		case 'y':
			fuzzy_basis++;
			break;

		case 'q':
			quiet++;
			break;

		case 'x':
			one_file_system++;
			break;

		case 'F':
			switch (++F_option_cnt) {
			case 1:
				parse_filter_str(&filter_list,": /.rsync-filter",rule_template(0),0);
				break;
			case 2:
				parse_filter_str(&filter_list,"- .rsync-filter",rule_template(0),0);
				break;
			}
			break;

		case 'P':
			if (refused_partial || refused_progress) {
				create_refuse_error(refused_partial
				    ? refused_partial : refused_progress);
				return 0;
			}
			do_progress = 1;
			keep_partial = 1;
			break;

		case 'z':
			do_compression++;
			break;

		case 'M':
			arg = poptGetOptArg(pc);
			if (*arg != '-') {
				snprintf(err_buf, sizeof err_buf,
					"Remote option must start with a dash: %s\n", arg);
				return 0;
			}
			if (remote_option_cnt+2 >= remote_option_alloc) {
				remote_option_alloc += 16;
				remote_options = realloc_array(remote_options,
							const char *, remote_option_alloc);
				if (!remote_options)
					out_of_memory("parse_arguments");
				if (!remote_option_cnt)
					remote_options[0] = "ARG0";
			}
			remote_options[++remote_option_cnt] = arg;
			remote_options[remote_option_cnt+1] = NULL;
			break;

		case OPT_WRITE_BATCH:
			/* batch_name is already set */
			write_batch = 1;
			break;

		case OPT_ONLY_WRITE_BATCH:
			/* batch_name is already set */
			write_batch = -1;
			break;

		case OPT_READ_BATCH:
			/* batch_name is already set */
			read_batch = 1;
			break;

		case OPT_NO_ICONV:
#ifdef ICONV_OPTION
			iconv_opt = NULL;
#endif
			break;

		case OPT_MAX_SIZE:
			if ((max_size = parse_size_arg(&max_size_arg, 'b')) < 0) {
				snprintf(err_buf, sizeof err_buf,
					"--max-size value is invalid: %s\n",
					max_size_arg);
				return 0;
			}
			break;

		case OPT_MIN_SIZE:
			if ((min_size = parse_size_arg(&min_size_arg, 'b')) < 0) {
				snprintf(err_buf, sizeof err_buf,
					"--min-size value is invalid: %s\n",
					min_size_arg);
				return 0;
			}
			break;

		case OPT_BWLIMIT:
			{
				OFF_T limit = parse_size_arg(&bwlimit_arg, 'K');
				if (limit < 0) {
					snprintf(err_buf, sizeof err_buf,
						"--bwlimit value is invalid: %s\n", bwlimit_arg);
					return 0;
				}
				bwlimit = (limit + 512) / 1024;
				if (limit && !bwlimit) {
					snprintf(err_buf, sizeof err_buf,
						"--bwlimit value is too small: %s\n", bwlimit_arg);
					return 0;
				}
			}
			break;

		case OPT_APPEND:
			if (am_server)
				append_mode++;
			else
				append_mode = 1;
			break;

		case OPT_LINK_DEST:
#ifdef SUPPORT_HARD_LINKS
			link_dest = 1;
			dest_option = "--link-dest";
			goto set_dest_dir;
#else
			snprintf(err_buf, sizeof err_buf,
				 "hard links are not supported on this %s\n",
				 am_server ? "server" : "client");
			return 0;
#endif

		case OPT_COPY_DEST:
			copy_dest = 1;
			dest_option = "--copy-dest";
			goto set_dest_dir;

		case OPT_COMPARE_DEST:
			compare_dest = 1;
			dest_option = "--compare-dest";
		set_dest_dir:
			if (basis_dir_cnt >= MAX_BASIS_DIRS) {
				snprintf(err_buf, sizeof err_buf,
					"ERROR: at most %d %s args may be specified\n",
					MAX_BASIS_DIRS, dest_option);
				return 0;
			}
			/* We defer sanitizing this arg until we know what
			 * our destination directory is going to be. */
			basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
			break;

		case OPT_CHMOD:
			arg = poptGetOptArg(pc);
			if (!parse_chmod(arg, &chmod_modes)) {
				snprintf(err_buf, sizeof err_buf,
				    "Invalid argument passed to --chmod (%s)\n",
				    arg);
				return 0;
			}
			break;

		case OPT_INFO:
			arg = poptGetOptArg(pc);
			parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
			break;

		case OPT_DEBUG:
			arg = poptGetOptArg(pc);
			parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
			break;

		case OPT_USERMAP:
			if (usermap) {
				if (usermap_via_chown) {
					snprintf(err_buf, sizeof err_buf,
					    "--usermap conflicts with prior --chown.\n");
					return 0;
				}
				snprintf(err_buf, sizeof err_buf,
				    "You can only specify --usermap once.\n");
				return 0;
			}
			usermap = (char *)poptGetOptArg(pc);
			usermap_via_chown = False;
			break;

		case OPT_GROUPMAP:
			if (groupmap) {
				if (groupmap_via_chown) {
					snprintf(err_buf, sizeof err_buf,
					    "--groupmap conflicts with prior --chown.\n");
					return 0;
				}
				snprintf(err_buf, sizeof err_buf,
				    "You can only specify --groupmap once.\n");
				return 0;
			}
			groupmap = (char *)poptGetOptArg(pc);
			groupmap_via_chown = False;
			break;

		case OPT_CHOWN: {
			const char *chown = poptGetOptArg(pc);
			int len;
			if ((arg = strchr(chown, ':')) != NULL)
				len = arg++ - chown;
			else
				len = strlen(chown);
			if (len) {
				if (usermap) {
					if (!usermap_via_chown) {
						snprintf(err_buf, sizeof err_buf,
						    "--chown conflicts with prior --usermap.\n");
						return 0;
					}
					snprintf(err_buf, sizeof err_buf,
					    "You can only specify a user-affecting --chown once.\n");
					return 0;
				}
				if (asprintf(&usermap, "*:%.*s", len, chown) < 0)
					out_of_memory("parse_arguments");
				usermap_via_chown = True;
			}
			if (arg && *arg) {
				if (groupmap) {
					if (!groupmap_via_chown) {
						snprintf(err_buf, sizeof err_buf,
						    "--chown conflicts with prior --groupmap.\n");
						return 0;
					}
					snprintf(err_buf, sizeof err_buf,
					    "You can only specify a group-affecting --chown once.\n");
					return 0;
				}
				if (asprintf(&groupmap, "*:%s", arg) < 0)
					out_of_memory("parse_arguments");
				groupmap_via_chown = True;
			}
			break;
		}

		case OPT_HELP:
			usage(FINFO);
			exit_cleanup(0);

		case 'A':
#ifdef SUPPORT_ACLS
			preserve_acls = 1;
			preserve_perms = 1;
			break;
#else
			/* FIXME: this should probably be ignored with a
			 * warning and then countermeasures taken to
			 * restrict group and other access in the presence
			 * of any more restrictive ACLs, but this is safe
			 * for now */
			snprintf(err_buf,sizeof(err_buf),
                                 "ACLs are not supported on this %s\n",
				 am_server ? "server" : "client");
			return 0;
#endif

		case 'X':
#ifdef SUPPORT_XATTRS
			preserve_xattrs++;
			break;
#else
			snprintf(err_buf,sizeof(err_buf),
				 "extended attributes are not supported on this %s\n",
				 am_server ? "server" : "client");
			return 0;
#endif

		default:
			/* A large opt value means that set_refuse_options()
			 * turned this option off. */
			if (opt >= OPT_REFUSED_BASE) {
				create_refuse_error(opt);
				return 0;
			}
			snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
				 am_server ? "on remote machine: " : "",
				 poptBadOption(pc, POPT_BADOPTION_NOALIAS),
				 poptStrerror(opt));
			return 0;
		}
	}

	if (protect_args < 0) {
		if (am_server)
			protect_args = 0;
		else if ((arg = getenv("RSYNC_PROTECT_ARGS")) != NULL && *arg)
			protect_args = atoi(arg) ? 1 : 0;
		else {
#ifdef RSYNC_USE_PROTECTED_ARGS
			protect_args = 1;
#else
			protect_args = 0;
#endif
		}
	}

	if (checksum_choice && strcmp(checksum_choice, "auto") != 0 && strcmp(checksum_choice, "auto,auto") != 0) {
		/* Call this early to verify the args and figure out if we need to force
		 * --whole-file. Note that the parse function will get called again later,
		 * just in case an "auto" choice needs to know the protocol_version. */
		if (parse_checksum_choice())
			whole_file = 1;
	} else
		checksum_choice = NULL;

	if (human_readable > 1 && argc == 2 && !am_server) {
		/* Allow the old meaning of 'h' (--help) on its own. */
		usage(FINFO);
		exit_cleanup(0);
	}

	if (do_compression || def_compress_level != NOT_SPECIFIED) {
		if (def_compress_level == NOT_SPECIFIED)
			def_compress_level = Z_DEFAULT_COMPRESSION;
		else if (def_compress_level < Z_DEFAULT_COMPRESSION || def_compress_level > Z_BEST_COMPRESSION) {
			snprintf(err_buf, sizeof err_buf, "--compress-level value is invalid: %d\n",
				 def_compress_level);
			return 0;
		} else if (def_compress_level == Z_NO_COMPRESSION)
			do_compression = 0;
		else if (!do_compression)
			do_compression = 1;
		if (do_compression && refused_compress) {
			create_refuse_error(refused_compress);
			return 0;
		}
#ifdef EXTERNAL_ZLIB
		if (do_compression == 1) {
			snprintf(err_buf, sizeof err_buf,
				"This rsync lacks old-style --compress due to its external zlib.  Try -zz.\n");
			if (am_server)
				return 0;
			fprintf(stderr, "%s" "Continuing without compression.\n\n", err_buf);
			do_compression = 0;
		}
#endif
	}

#ifdef HAVE_SETVBUF
	if (outbuf_mode && !am_server) {
		int mode = *(uchar *)outbuf_mode;
		if (islower(mode))
			mode = toupper(mode);
		fflush(stdout); /* Just in case... */
		switch (mode) {
		case 'N': /* None */
		case 'U': /* Unbuffered */
			mode = _IONBF;
			break;
		case 'L': /* Line */
			mode = _IOLBF;
			break;
		case 'B': /* Block */
		case 'F': /* Full */
			mode = _IOFBF;
			break;
		default:
			snprintf(err_buf, sizeof err_buf,
				"Invalid --outbuf setting -- specify N, L, or B.\n");
			return 0;
		}
		setvbuf(stdout, (char *)NULL, mode, 0);
	}

	if (msgs2stderr) {
		/* Make stderr line buffered for better sharing of the stream. */
		fflush(stderr); /* Just in case... */
		setvbuf(stderr, (char *)NULL, _IOLBF, 0);
	}
#endif

	set_output_verbosity(verbose, DEFAULT_PRIORITY);

	if (do_stats) {
		parse_output_words(info_words, info_levels,
			verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
	}

#ifdef ICONV_OPTION
	if (iconv_opt && protect_args != 2) {
		if (!am_server && strcmp(iconv_opt, "-") == 0)
			iconv_opt = NULL;
		else
			need_unsorted_flist = 1;
	}
	if (refused_no_iconv && !iconv_opt) {
		create_refuse_error(refused_no_iconv);
		return 0;
	}
#endif

	if (fuzzy_basis > 1)
		fuzzy_basis = basis_dir_cnt + 1;

	/* Don't let the client reset protect_args if it was already processed */
	if (orig_protect_args == 2 && am_server)
		protect_args = orig_protect_args;

	if (protect_args == 1 && am_server)
		return 1;

	*argv_p = argv = poptGetArgs(pc);
	*argc_p = argc = count_args(argv);

#ifndef SUPPORT_LINKS
	if (preserve_links && !am_sender) {
		snprintf(err_buf, sizeof err_buf,
			 "symlinks are not supported on this %s\n",
			 am_server ? "server" : "client");
		return 0;
	}
#endif

#ifndef SUPPORT_HARD_LINKS
	if (preserve_hard_links) {
		snprintf(err_buf, sizeof err_buf,
			 "hard links are not supported on this %s\n",
			 am_server ? "server" : "client");
		return 0;
	}
#endif

#ifdef SUPPORT_XATTRS
	if (am_root < 0 && preserve_xattrs > 1) {
		snprintf(err_buf, sizeof err_buf,
			 "--fake-super conflicts with -XX\n");
		return 0;
	}
#else
	if (am_root < 0) {
		snprintf(err_buf, sizeof err_buf,
			 "--fake-super requires an rsync with extended attributes enabled\n");
		return 0;
	}
#endif

	if (block_size > MAX_BLOCK_SIZE) {
		snprintf(err_buf, sizeof err_buf,
			 "--block-size=%lu is too large (max: %u)\n", block_size, MAX_BLOCK_SIZE);
		return 0;
	}

	if (write_batch && read_batch) {
		snprintf(err_buf, sizeof err_buf,
			"--write-batch and --read-batch can not be used together\n");
		return 0;
	}
	if (write_batch > 0 || read_batch) {
		if (am_server) {
			rprintf(FINFO,
				"ignoring --%s-batch option sent to server\n",
				write_batch ? "write" : "read");
			/* We don't actually exit_cleanup(), so that we can
			 * still service older version clients that still send
			 * batch args to server. */
			read_batch = write_batch = 0;
			batch_name = NULL;
		} else if (dry_run)
			write_batch = 0;
	} else if (write_batch < 0 && dry_run)
		write_batch = 0;
	if (read_batch && files_from) {
		snprintf(err_buf, sizeof err_buf,
			"--read-batch cannot be used with --files-from\n");
		return 0;
	}
	if (read_batch && remove_source_files) {
		snprintf(err_buf, sizeof err_buf,
			"--read-batch cannot be used with --remove-%s-files\n",
			remove_source_files == 1 ? "source" : "sent");
		return 0;
	}
	if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
		snprintf(err_buf, sizeof err_buf,
			"the batch-file name must be %d characters or less.\n",
			MAX_BATCH_NAME_LEN);
		return 0;
	}

	if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
		snprintf(err_buf, sizeof err_buf,
			 "the --temp-dir path is WAY too long.\n");
		return 0;
	}

	if (max_delete < 0 && max_delete != INT_MIN) {
		/* Negative numbers are treated as "no deletions". */
		max_delete = 0;
	}

	if (compare_dest + copy_dest + link_dest > 1) {
		snprintf(err_buf, sizeof err_buf,
			"You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
		return 0;
	}

	if (files_from) {
		if (recurse == 1) /* preserve recurse == 2 */
			recurse = 0;
		if (xfer_dirs < 0)
			xfer_dirs = 1;
	}

	if (argc < 2 && !read_batch && !am_server)
		list_only |= 1;

	if (xfer_dirs >= 4) {
		parse_filter_str(&filter_list, "- /*/*", rule_template(0), 0);
		recurse = xfer_dirs = 1;
	} else if (recurse)
		xfer_dirs = 1;
	else if (xfer_dirs < 0)
		xfer_dirs = list_only ? 1 : 0;

	if (relative_paths < 0)
		relative_paths = files_from? 1 : 0;
	if (!relative_paths)
		implied_dirs = 0;

	if (delete_before + !!delete_during + delete_after > 1) {
		snprintf(err_buf, sizeof err_buf,
			"You may not combine multiple --delete-WHEN options.\n");
		return 0;
	}
	if (delete_before || delete_during || delete_after)
		delete_mode = 1;
	else if (delete_mode || delete_excluded) {
		/* Only choose now between before & during if one is refused. */
		if (refused_delete_before) {
			if (!refused_delete_during)
				delete_during = 1;
			else {
				create_refuse_error(refused_delete_before);
				return 0;
			}
		} else if (refused_delete_during)
			delete_before = 1;
		delete_mode = 1;
	}
	if (!xfer_dirs && delete_mode) {
		snprintf(err_buf, sizeof err_buf,
			"--delete does not work without --recursive (-r) or --dirs (-d).\n");
		return 0;
	}

	if (missing_args == 3) /* simplify if both options were specified */
		missing_args = 2;
	if (refused_delete && (delete_mode || missing_args == 2)) {
		create_refuse_error(refused_delete);
		return 0;
	}

	if (remove_source_files) {
		/* We only want to infer this refusal of --remove-source-files
		 * via the refusal of "delete", not any of the "delete-FOO"
		 * options. */
		if (refused_delete && am_sender) {
			create_refuse_error(refused_delete);
			return 0;
		}
		need_messages_from_generator = 1;
	}

	if (munge_symlinks && !am_daemon) {
		STRUCT_STAT st;
		char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */
		strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */
		if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) {
			rprintf(FERROR, "Symlink munging is unsafe when a %s directory exists.\n",
				prefix);
			exit_cleanup(RERR_UNSUPPORTED);
		}
	}

	if (sanitize_paths) {
		int i;
		for (i = argc; i-- > 0; )
			argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
		if (tmpdir)
			tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
		if (backup_dir)
			backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
	}
	if (daemon_filter_list.head && !am_sender) {
		filter_rule_list *elp = &daemon_filter_list;
		if (tmpdir) {
			char *dir;
			if (!*tmpdir)
				goto options_rejected;
			dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
			clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
			if (check_filter(elp, FLOG, dir, 1) < 0)
				goto options_rejected;
		}
		if (backup_dir) {
			char *dir;
			if (!*backup_dir)
				goto options_rejected;
			dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
			clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
			if (check_filter(elp, FLOG, dir, 1) < 0)
				goto options_rejected;
		}
	}

	if (!backup_suffix)
		backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
	backup_suffix_len = strlen(backup_suffix);
	if (strchr(backup_suffix, '/') != NULL) {
		snprintf(err_buf, sizeof err_buf,
			"--suffix cannot contain slashes: %s\n",
			backup_suffix);
		return 0;
	}
	if (backup_dir) {
		size_t len;
		while (*backup_dir == '.' && backup_dir[1] == '/')
			backup_dir += 2;
		if (*backup_dir == '.' && backup_dir[1] == '\0')
			backup_dir++;
		len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
		if (len > sizeof backup_dir_buf - 128) {
			snprintf(err_buf, sizeof err_buf,
				"the --backup-dir path is WAY too long.\n");
			return 0;
		}
		backup_dir_len = (int)len;
		if (!backup_dir_len) {
			backup_dir_len = -1;
			backup_dir = NULL;
		} else if (backup_dir_buf[backup_dir_len - 1] != '/') {
			backup_dir_buf[backup_dir_len++] = '/';
			backup_dir_buf[backup_dir_len] = '\0';
		}
		backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
	}
	if (backup_dir) {
		/* No need for a suffix or a protect rule. */
	} else if (!backup_suffix_len && (!am_server || !am_sender)) {
		snprintf(err_buf, sizeof err_buf,
			"--suffix cannot be empty %s\n", backup_dir_len < 0
			? "when --backup-dir is the same as the dest dir"
			: "without a --backup-dir");
		return 0;
	} else if (make_backups && delete_mode && !delete_excluded && !am_server) {
		snprintf(backup_dir_buf, sizeof backup_dir_buf,
			"P *%s", backup_suffix);
		parse_filter_str(&filter_list, backup_dir_buf, rule_template(0), 0);
	}

	if (preserve_times) {
		preserve_times = PRESERVE_FILE_TIMES;
		if (!omit_dir_times)
			preserve_times |= PRESERVE_DIR_TIMES;
#ifdef CAN_SET_SYMLINK_TIMES
		if (!omit_link_times)
			preserve_times |= PRESERVE_LINK_TIMES;
#endif
	}

	if (make_backups && !backup_dir) {
		omit_dir_times = 0; /* Implied, so avoid -O to sender. */
		preserve_times &= ~PRESERVE_DIR_TIMES;
	}

	if (stdout_format) {
		if (am_server && log_format_has(stdout_format, 'I'))
			stdout_format_has_i = 2;
		else if (log_format_has(stdout_format, 'i'))
			stdout_format_has_i = itemize_changes | 1;
		if (!log_format_has(stdout_format, 'b')
		 && !log_format_has(stdout_format, 'c')
		 && !log_format_has(stdout_format, 'C'))
			log_before_transfer = !am_server;
	} else if (itemize_changes) {
		stdout_format = "%i %n%L";
		stdout_format_has_i = itemize_changes;
		log_before_transfer = !am_server;
	}

	if (do_progress && !am_server) {
		if (!log_before_transfer && INFO_EQ(NAME, 0))
			parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
		parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
	}

	if (dry_run)
		do_xfers = 0;

	set_io_timeout(io_timeout);

	if (INFO_GTE(NAME, 1) && !stdout_format) {
		stdout_format = "%n%L";
		log_before_transfer = !am_server;
	}
	if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
		stdout_format_has_o_or_i = 1;

	if (logfile_name && !am_daemon) {
		if (!logfile_format) {
			logfile_format = "%i %n%L";
			logfile_format_has_i = logfile_format_has_o_or_i = 1;
		} else {
			if (log_format_has(logfile_format, 'i'))
				logfile_format_has_i = 1;
			if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
				logfile_format_has_o_or_i = 1;
		}
		log_init(0);
	} else if (!am_daemon)
		logfile_format = NULL;

	if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
		bwlimit = daemon_bwlimit;
	if (bwlimit) {
		bwlimit_writemax = (size_t)bwlimit * 128;
		if (bwlimit_writemax < 512)
			bwlimit_writemax = 512;
	}

	if (append_mode) {
		if (whole_file > 0) {
			snprintf(err_buf, sizeof err_buf,
				 "--append cannot be used with --whole-file\n");
			return 0;
		}
		if (refused_inplace) {
			create_refuse_error(refused_inplace);
			return 0;
		}
		inplace = 1;
	}

	if (delay_updates && !partial_dir)
		partial_dir = tmp_partialdir;

	if (inplace) {
#ifdef HAVE_FTRUNCATE
		if (partial_dir) {
			snprintf(err_buf, sizeof err_buf,
				 "--%s cannot be used with --%s\n",
				 append_mode ? "append" : "inplace",
				 delay_updates ? "delay-updates" : "partial-dir");
			return 0;
		}
		/* --inplace implies --partial for refusal purposes, but we
		 * clear the keep_partial flag for internal logic purposes. */
		if (refused_partial) {
			create_refuse_error(refused_partial);
			return 0;
		}
		keep_partial = 0;
#else
		snprintf(err_buf, sizeof err_buf,
			 "--%s is not supported on this %s\n",
			 append_mode ? "append" : "inplace",
			 am_server ? "server" : "client");
		return 0;
#endif
	} else {
		if (keep_partial && !partial_dir && !am_server) {
			if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
				partial_dir = strdup(arg);
		}
		if (partial_dir) {
			if (*partial_dir)
				clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
			if (!*partial_dir || strcmp(partial_dir, ".") == 0)
				partial_dir = NULL;
			if (!partial_dir && refused_partial) {
				create_refuse_error(refused_partial);
				return 0;
			}
			keep_partial = 1;
		}
	}

	if (files_from) {
		char *h, *p;
		int q;
		if (argc > 2 || (!am_daemon && !am_server && argc == 1)) {
			usage(FERROR);
			exit_cleanup(RERR_SYNTAX);
		}
		if (strcmp(files_from, "-") == 0) {
			filesfrom_fd = 0;
			if (am_server)
				filesfrom_host = ""; /* reading from socket */
		} else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
			if (am_server) {
				snprintf(err_buf, sizeof err_buf,
					"The --files-from sent to the server cannot specify a host.\n");
				return 0;
			}
			files_from = p;
			filesfrom_host = h;
			if (strcmp(files_from, "-") == 0) {
				snprintf(err_buf, sizeof err_buf,
					"Invalid --files-from remote filename\n");
				return 0;
			}
		} else {
			if (sanitize_paths)
				files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
			if (daemon_filter_list.head) {
				char *dir;
				if (!*files_from)
					goto options_rejected;
				dir = files_from + (*files_from == '/' ? module_dirlen : 0);
				clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
				if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
					goto options_rejected;
			}
			filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
			if (filesfrom_fd < 0) {
				snprintf(err_buf, sizeof err_buf,
					"failed to open files-from file %s: %s\n",
					files_from, strerror(errno));
				return 0;
			}
		}
	}

	am_starting_up = 0;

	return 1;

  options_rejected:
	snprintf(err_buf, sizeof err_buf,
		"Your options have been rejected by the server.\n");
	return 0;
}


/**
 * Construct a filtered list of options to pass through from the
 * client to the server.
 *
 * This involves setting options that will tell the server how to
 * behave, and also filtering out options that are processed only
 * locally.
 **/
void server_options(char **args, int *argc_p)
{
	static char argstr[64];
	int ac = *argc_p;
	uchar where;
	char *arg;
	int i, x;

	/* This should always remain first on the server's command-line. */
	args[ac++] = "--server";

	if (daemon_over_rsh > 0) {
		args[ac++] = "--daemon";
		*argc_p = ac;
		/* if we're passing --daemon, we're done */
		return;
	}

	if (!am_sender)
		args[ac++] = "--sender";

	x = 1;
	argstr[0] = '-';

	if (protect_args)
		argstr[x++] = 's';

	for (i = 0; i < verbose; i++)
		argstr[x++] = 'v';

	/* the -q option is intentionally left out */
	if (make_backups)
		argstr[x++] = 'b';
	if (update_only)
		argstr[x++] = 'u';
	if (!do_xfers) /* Note: NOT "dry_run"! */
		argstr[x++] = 'n';
	if (preserve_links)
		argstr[x++] = 'l';
	if ((xfer_dirs >= 2 && xfer_dirs < 4)
	 || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
		argstr[x++] = 'd';
	if (am_sender) {
		if (keep_dirlinks)
			argstr[x++] = 'K';
		if (prune_empty_dirs)
			argstr[x++] = 'm';
		if (omit_dir_times)
			argstr[x++] = 'O';
		if (omit_link_times)
			argstr[x++] = 'J';
		if (fuzzy_basis) {
			argstr[x++] = 'y';
			if (fuzzy_basis > 1)
				argstr[x++] = 'y';
		}
	} else {
		if (copy_links)
			argstr[x++] = 'L';
		if (copy_dirlinks)
			argstr[x++] = 'k';
	}

	if (whole_file > 0)
		argstr[x++] = 'W';
	/* We don't need to send --no-whole-file, because it's the
	 * default for remote transfers, and in any case old versions
	 * of rsync will not understand it. */

	if (preserve_hard_links) {
		argstr[x++] = 'H';
		if (preserve_hard_links > 1)
			argstr[x++] = 'H';
	}
	if (preserve_uid)
		argstr[x++] = 'o';
	if (preserve_gid)
		argstr[x++] = 'g';
	if (preserve_devices) /* ignore preserve_specials here */
		argstr[x++] = 'D';
	if (preserve_times)
		argstr[x++] = 't';
	if (preserve_perms)
		argstr[x++] = 'p';
	else if (preserve_executability && am_sender)
		argstr[x++] = 'E';
#ifdef SUPPORT_ACLS
	if (preserve_acls)
		argstr[x++] = 'A';
#endif
#ifdef SUPPORT_XATTRS
	if (preserve_xattrs) {
		argstr[x++] = 'X';
		if (preserve_xattrs > 1)
			argstr[x++] = 'X';
	}
#endif
	if (recurse)
		argstr[x++] = 'r';
	if (always_checksum)
		argstr[x++] = 'c';
	if (cvs_exclude)
		argstr[x++] = 'C';
	if (ignore_times)
		argstr[x++] = 'I';
	if (relative_paths)
		argstr[x++] = 'R';
	if (one_file_system) {
		argstr[x++] = 'x';
		if (one_file_system > 1)
			argstr[x++] = 'x';
	}
	if (sparse_files)
		argstr[x++] = 'S';
	if (do_compression == 1)
		argstr[x++] = 'z';

	set_allow_inc_recurse();

	/* We don't really know the actual protocol_version at this point,
	 * but checking the pre-negotiated value allows the user to use a
	 * --protocol=29 override to avoid the use of this -eFLAGS opt. */
	if (protocol_version >= 30) {
		/* Use "eFlags" alias so that cull_options doesn't think that these are no-arg option letters. */
#define eFlags argstr
		/* We make use of the -e option to let the server know about
		 * any pre-release protocol version && some behavior flags. */
		eFlags[x++] = 'e';
#if SUBPROTOCOL_VERSION != 0
		if (protocol_version == PROTOCOL_VERSION) {
			x += snprintf(argstr+x, sizeof argstr - x,
				      "%d.%d",
				      PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
		} else
#endif
			eFlags[x++] = '.';
		if (allow_inc_recurse)
			eFlags[x++] = 'i';
#ifdef CAN_SET_SYMLINK_TIMES
		eFlags[x++] = 'L'; /* symlink time-setting support */
#endif
#ifdef ICONV_OPTION
		eFlags[x++] = 's'; /* symlink iconv translation support */
#endif
		eFlags[x++] = 'f'; /* flist I/O-error safety support */
		eFlags[x++] = 'x'; /* xattr hardlink optimization not desired */
		eFlags[x++] = 'C'; /* support checksum seed order fix */
#undef eFlags
	}

	if (x >= (int)sizeof argstr) { /* Not possible... */
		rprintf(FERROR, "argstr overflow in server_options().\n");
		exit_cleanup(RERR_MALLOC);
	}

	argstr[x] = '\0';

	if (x > 1)
		args[ac++] = argstr;

#ifdef ICONV_OPTION
	if (iconv_opt) {
		char *set = strchr(iconv_opt, ',');
		if (set)
			set++;
		else
			set = iconv_opt;
		if (asprintf(&arg, "--iconv=%s", set) < 0)
			goto oom;
		args[ac++] = arg;
	}
#endif

	if (protect_args && !local_server) /* unprotected args stop here */
		args[ac++] = NULL;

	if (list_only > 1)
		args[ac++] = "--list-only";

	/* This makes sure that the remote rsync can handle deleting with -d
	 * sans -r because the --no-r option was added at the same time. */
	if (xfer_dirs && !recurse && delete_mode && am_sender)
		args[ac++] = "--no-r";

	if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
		if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (preserve_devices) {
		/* Note: sending "--devices" would not be backward-compatible. */
		if (!preserve_specials)
			args[ac++] = "--no-specials"; /* -D is already set. */
	} else if (preserve_specials)
		args[ac++] = "--specials";

	/* The server side doesn't use our log-format, but in certain
	 * circumstances they need to know a little about the option. */
	if (stdout_format && am_sender) {
		/* Use --log-format, not --out-format, for compatibility. */
		if (stdout_format_has_i > 1)
			args[ac++] = "--log-format=%i%I";
		else if (stdout_format_has_i)
			args[ac++] = "--log-format=%i";
		else if (stdout_format_has_o_or_i)
			args[ac++] = "--log-format=%o";
		else if (!verbose)
			args[ac++] = "--log-format=X";
	}

	if (block_size) {
		if (asprintf(&arg, "-B%lu", block_size) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (io_timeout) {
		if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (bwlimit) {
		if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (backup_dir) {
		args[ac++] = "--backup-dir";
		args[ac++] = backup_dir;
	}

	/* Only send --suffix if it specifies a non-default value. */
	if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
		/* We use the following syntax to avoid weirdness with '~'. */
		if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (checksum_choice) {
		if (asprintf(&arg, "--checksum-choice=%s", checksum_choice) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (am_sender) {
		if (max_delete > 0) {
			if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
				goto oom;
			args[ac++] = arg;
		} else if (max_delete == 0)
			args[ac++] = "--max-delete=-1";
		if (min_size >= 0) {
			args[ac++] = "--min-size";
			args[ac++] = min_size_arg;
		}
		if (max_size >= 0) {
			args[ac++] = "--max-size";
			args[ac++] = max_size_arg;
		}
		if (delete_before)
			args[ac++] = "--delete-before";
		else if (delete_during == 2)
			args[ac++] = "--delete-delay";
		else if (delete_during)
			args[ac++] = "--delete-during";
		else if (delete_after)
			args[ac++] = "--delete-after";
		else if (delete_mode && !delete_excluded)
			args[ac++] = "--delete";
		if (delete_excluded)
			args[ac++] = "--delete-excluded";
		if (force_delete)
			args[ac++] = "--force";
		if (write_batch < 0)
			args[ac++] = "--only-write-batch=X";
		if (am_root > 1)
			args[ac++] = "--super";
		if (size_only)
			args[ac++] = "--size-only";
		if (do_stats)
			args[ac++] = "--stats";
	} else {
		if (skip_compress) {
			if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
				goto oom;
			args[ac++] = arg;
		}
	}

	/* --delete-missing-args needs the cooperation of both sides, but
	 * the sender can handle --ignore-missing-args by itself. */
	if (missing_args == 2)
		args[ac++] = "--delete-missing-args";
	else if (missing_args == 1 && !am_sender)
		args[ac++] = "--ignore-missing-args";

	if (modify_window_set && am_sender) {
		char *fmt = modify_window < 0 ? "-@%d" : "--modify-window=%d";
		if (asprintf(&arg, fmt, modify_window) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (checksum_seed) {
		if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (partial_dir && am_sender) {
		if (partial_dir != tmp_partialdir) {
			args[ac++] = "--partial-dir";
			args[ac++] = partial_dir;
		}
		if (delay_updates)
			args[ac++] = "--delay-updates";
	} else if (keep_partial && am_sender)
		args[ac++] = "--partial";

	if (ignore_errors)
		args[ac++] = "--ignore-errors";

	if (copy_unsafe_links)
		args[ac++] = "--copy-unsafe-links";

	if (safe_symlinks)
		args[ac++] = "--safe-links";

	if (numeric_ids)
		args[ac++] = "--numeric-ids";

	if (use_qsort)
		args[ac++] = "--use-qsort";

	if (am_sender) {
		if (usermap) {
			if (asprintf(&arg, "--usermap=%s", usermap) < 0)
				goto oom;
			args[ac++] = arg;
		}

		if (groupmap) {
			if (asprintf(&arg, "--groupmap=%s", groupmap) < 0)
				goto oom;
			args[ac++] = arg;
		}

		if (ignore_existing)
			args[ac++] = "--ignore-existing";

		/* Backward compatibility: send --existing, not --ignore-non-existing. */
		if (ignore_non_existing)
			args[ac++] = "--existing";

		if (tmpdir) {
			args[ac++] = "--temp-dir";
			args[ac++] = tmpdir;
		}

		if (basis_dir[0]) {
			/* the server only needs this option if it is not the sender,
			 *   and it may be an older version that doesn't know this
			 *   option, so don't send it if client is the sender.
			 */
			for (i = 0; i < basis_dir_cnt; i++) {
				args[ac++] = dest_option;
				args[ac++] = basis_dir[i];
			}
		}
	}

	/* What flags do we need to send to the other side? */
	where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
	arg = make_output_option(info_words, info_levels, where);
	if (arg)
		args[ac++] = arg;

	arg = make_output_option(debug_words, debug_levels, where);
	if (arg)
		args[ac++] = arg;

	if (append_mode) {
		if (append_mode > 1)
			args[ac++] = "--append";
		args[ac++] = "--append";
	} else if (inplace)
		args[ac++] = "--inplace";

	if (files_from && (!am_sender || filesfrom_host)) {
		if (filesfrom_host) {
			args[ac++] = "--files-from";
			args[ac++] = files_from;
			if (eol_nulls)
				args[ac++] = "--from0";
		} else {
			args[ac++] = "--files-from=-";
			args[ac++] = "--from0";
		}
		if (!relative_paths)
			args[ac++] = "--no-relative";
	}
	/* It's OK that this checks the upper-bound of the protocol_version. */
	if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
		args[ac++] = "--no-implied-dirs";

	if (remove_source_files == 1)
		args[ac++] = "--remove-source-files";
	else if (remove_source_files)
		args[ac++] = "--remove-sent-files";

	if (preallocate_files && am_sender)
		args[ac++] = "--preallocate";

	if (ac > MAX_SERVER_ARGS) { /* Not possible... */
		rprintf(FERROR, "argc overflow in server_options().\n");
		exit_cleanup(RERR_MALLOC);
	}

	if (do_compression > 1)
		args[ac++] = "--new-compress";

	if (remote_option_cnt) {
		int j;
		if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
			rprintf(FERROR, "too many remote options specified.\n");
			exit_cleanup(RERR_SYNTAX);
		}
		for (j = 1; j <= remote_option_cnt; j++)
			args[ac++] = (char*)remote_options[j];
	}

	*argc_p = ac;
	return;

    oom:
	out_of_memory("server_options");
}

/* If str points to a valid hostspec, return allocated memory containing the
 * [USER@]HOST part of the string, and set the path_start_ptr to the part of
 * the string after the host part.  Otherwise, return NULL.  If port_ptr is
 * non-NULL, we must be parsing an rsync:// URL hostname, and we will set
 * *port_ptr if a port number is found.  Note that IPv6 IPs will have their
 * (required for parsing) [ and ] chars elided from the returned string. */
static char *parse_hostspec(char *str, char **path_start_ptr, int *port_ptr)
{
	char *s, *host_start = str;
	int hostlen = 0, userlen = 0;
	char *ret;

	for (s = str; ; s++) {
		if (!*s) {
			/* It is only OK if we run out of string with rsync:// */
			if (!port_ptr)
				return NULL;
			if (!hostlen)
				hostlen = s - host_start;
			break;
		}
		if (*s == ':' || *s == '/') {
			if (!hostlen)
				hostlen = s - host_start;
			if (*s++ == '/') {
				if (!port_ptr)
					return NULL;
			} else if (port_ptr) {
				*port_ptr = atoi(s);
				while (isDigit(s)) s++;
				if (*s && *s++ != '/')
					return NULL;
			}
			break;
		}
		if (*s == '@') {
			userlen = s - str + 1;
			host_start = s + 1;
		} else if (*s == '[') {
			if (s != host_start++)
				return NULL;
			while (*s && *s != ']' && *s != '/') s++; /*SHARED ITERATOR*/
			hostlen = s - host_start;
			if (*s != ']' || (s[1] && s[1] != '/' && s[1] != ':') || !hostlen)
				return NULL;
		}
	}

	*path_start_ptr = s;
	ret = new_array(char, userlen + hostlen + 1);
	if (userlen)
		strlcpy(ret, str, userlen + 1);
	strlcpy(ret + userlen, host_start, hostlen + 1);
	return ret;
}

/* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
 * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
 * memory with the HOST.  If a daemon-accessing spec was specified, the value
 * of *port_ptr will contain a non-0 port number, otherwise it will be set to
 * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
 * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
 * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
{
	char *path;

	if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
		*host_ptr = parse_hostspec(s + strlen(URL_PREFIX), &path, port_ptr);
		if (*host_ptr) {
			if (!*port_ptr)
				*port_ptr = RSYNC_PORT;
			return path;
		}
	}

	*host_ptr = parse_hostspec(s, &path, NULL);
	if (!*host_ptr)
		return NULL;

	if (*path == ':') {
		if (port_ptr && !*port_ptr)
			*port_ptr = RSYNC_PORT;
		return path + 1;
	}
	if (port_ptr)
		*port_ptr = 0;

	return path;
}