summaryrefslogtreecommitdiffstats
path: root/xlators/nfs/server/src/mount3.c
blob: adf018c94beb71c91844862dc66c7c4d8cef395d (plain)
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
/*
  Copyright (c) 2010-2011 Gluster, Inc. <http://www.gluster.com>
  This file is part of GlusterFS.

  GlusterFS 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.

  GlusterFS 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, see
  <http://www.gnu.org/licenses/>.
*/

#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif

#include "rpcsvc.h"
#include "dict.h"
#include "xlator.h"
#include "mount3.h"
#include "xdr-nfs3.h"
#include "msg-nfs3.h"
#include "iobuf.h"
#include "nfs-common.h"
#include "nfs3-fh.h"
#include "nfs-fops.h"
#include "nfs-inodes.h"
#include "nfs-generics.h"
#include "locking.h"
#include "iatt.h"
#include "nfs-mem-types.h"
#include "nfs.h"
#include "common-utils.h"


#include <errno.h>
#include <sys/socket.h>
#include <sys/uio.h>


#define IPv4_ADDR_SIZE  32

/* Macro to typecast the parameter to struct sockaddr_in
 */
#define SA(addr) ((struct sockaddr_in*)(addr))

/* Macro will mask the ip address with netmask.
 */
#define MASKED_IP(ipv4addr, netmask)                    \
                (ntohl(SA(ipv4addr)->sin_addr.s_addr) & (netmask))

/* Macro will compare two IP address after applying the mask
 */
#define COMPARE_IPv4_ADDRS(ip1, ip2, netmask)           \
                ((MASKED_IP(ip1, netmask)) == (MASKED_IP(ip2, netmask)))

/* This macro will assist in freeing up entire link list
 * of host_auth_spec structure.
 */
#define FREE_HOSTSPEC(exp) do {                                 \
                struct host_auth_spec *host= exp->hostspec;     \
                while (NULL != host){                           \
                        struct host_auth_spec* temp = host;     \
                        host = host->next;                      \
                        if (NULL != temp->host_addr) {          \
                                GF_FREE (temp->host_addr);      \
                        }                                       \
                        GF_FREE (temp);                         \
                }                                               \
                exp->hostspec = NULL;                           \
        } while (0)

typedef ssize_t (*mnt3_serializer) (struct iovec outmsg, void *args);

extern void *
mount3udp_thread (void *argv);


/* Generic reply function for MOUNTv3 specific replies. */
int
mnt3svc_submit_reply (rpcsvc_request_t *req, void *arg, mnt3_serializer sfunc)
{
        struct iovec            outmsg = {0, };
        struct iobuf            *iob = NULL;
        struct mount3_state     *ms = NULL;
        int                     ret = -1;
        struct iobref           *iobref = NULL;

        if (!req)
                return -1;

        ms = (struct mount3_state *)rpcsvc_request_program_private (req);
        if (!ms) {
                gf_log (GF_MNT, GF_LOG_ERROR, "mount state not found");
                goto ret;
        }

        /* First, get the io buffer into which the reply in arg will
         * be serialized.
         */
        /* TODO: use 'xdrproc_t' instead of 'sfunc' to get the xdr-size */
        iob = iobuf_get (ms->iobpool);
        if (!iob) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to get iobuf");
                goto ret;
        }

        iobuf_to_iovec (iob, &outmsg);
        /* Use the given serializer to translate the give C structure in arg
         * to XDR format which will be written into the buffer in outmsg.
         */
        outmsg.iov_len = sfunc (outmsg, arg);

        iobref = iobref_new ();
        if (iobref == NULL) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to get iobref");
                goto ret;
        }

        iobref_add (iobref, iob);

        /* Then, submit the message for transmission. */
        ret = rpcsvc_submit_message (req, &outmsg, 1, NULL, 0, iobref);
        iobuf_unref (iob);
        iobref_unref (iobref);
        if (ret == -1) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Reply submission failed");
                goto ret;
        }

        ret = 0;
ret:
        return ret;
}


/* Generic error reply function, just pass the err status
 * and it will do the rest, including transmission.
 */
int
mnt3svc_mnt_error_reply (rpcsvc_request_t *req, int mntstat)
{
        mountres3       res;

        if (!req)
                return -1;

        res.fhs_status = mntstat;
        mnt3svc_submit_reply (req, (void *)&res,
                              (mnt3_serializer)xdr_serialize_mountres3);

        return 0;
}


mountstat3
mnt3svc_errno_to_mnterr (int32_t errnum)
{
        mountstat3      stat;

        switch (errnum) {

                case 0:
                        stat = MNT3_OK;
                        break;
                case ENOENT:
                        stat = MNT3ERR_NOENT;
                        break;
                case EPERM:
                        stat = MNT3ERR_PERM;
                        break;
                case EIO:
                        stat = MNT3ERR_IO;
                        break;
                case EACCES:
                        stat = MNT3ERR_ACCES;
                        break;
                case ENOTDIR:
                        stat = MNT3ERR_NOTDIR;
                        break;
                case EINVAL:
                        stat = MNT3ERR_INVAL;
                        break;
                case ENOSYS:
                        stat = MNT3ERR_NOTSUPP;
                        break;
                case ENOMEM:
                        stat = MNT3ERR_SERVERFAULT;
                        break;
                default:
                        stat = MNT3ERR_SERVERFAULT;
                        break;
        }

        return stat;
}


mountres3
mnt3svc_set_mountres3 (mountstat3 stat, struct nfs3_fh *fh, int *authflavor,
                       u_int aflen)
{
        mountres3       res = {0, };
        uint32_t        fhlen = 0;

        res.fhs_status = stat;
        fhlen = nfs3_fh_compute_size (fh);
        res.mountres3_u.mountinfo.fhandle.fhandle3_len = fhlen;
        res.mountres3_u.mountinfo.fhandle.fhandle3_val = (char *)fh;
        res.mountres3_u.mountinfo.auth_flavors.auth_flavors_val = authflavor;
        res.mountres3_u.mountinfo.auth_flavors.auth_flavors_len = aflen;

        return res;
}


int
mnt3svc_update_mountlist (struct mount3_state *ms, rpcsvc_request_t *req,
                          char  *expname)
{
        struct mountentry       *me = NULL;
        int                     ret = -1;
        char                    *colon = NULL;

        if ((!ms) || (!req) || (!expname))
                return -1;

        me = (struct mountentry *)GF_CALLOC (1, sizeof (*me),
                                             gf_nfs_mt_mountentry);
        if (!me)
                return -1;

        strcpy (me->exname, expname);
        INIT_LIST_HEAD (&me->mlist);
        /* Must get the IP or hostname of the client so we
         * can map it into the mount entry.
         */
        ret = rpcsvc_transport_peername (req->trans, me->hostname, MNTPATHLEN);
        if (ret == -1)
                goto free_err;

        colon = strrchr (me->hostname, ':');
        if (colon) {
                *colon = '\0';
        }
        LOCK (&ms->mountlock);
        {
                list_add_tail (&me->mlist, &ms->mountlist);
        }
        UNLOCK (&ms->mountlock);

free_err:
        if (ret == -1)
                GF_FREE (me);

        return ret;
}


int
__mnt3_get_volume_id (struct mount3_state *ms, xlator_t *mntxl,
                      uuid_t volumeid)
{
        int                     ret = -1;
        struct mnt3_export      *exp = NULL;

        if ((!ms) || (!mntxl))
                return ret;

        list_for_each_entry (exp, &ms->exportlist, explist) {
                if (exp->vol == mntxl) {
                        uuid_copy (volumeid, exp->volumeid);
                        ret = 0;
                        goto out;
                }
        }

out:
        return ret;
}


int32_t
mnt3svc_lookup_mount_cbk (call_frame_t *frame, void  *cookie,
                          xlator_t *this, int32_t op_ret, int32_t op_errno,
                          inode_t *inode, struct iatt *buf, dict_t *xattr,
                          struct iatt *postparent)
{
        mountres3               res = {0, };
        rpcsvc_request_t        *req = NULL;
        struct nfs3_fh          fh = {{0}, };
        struct mount3_state     *ms = NULL;
        mountstat3              status = 0;
        int                     autharr[10];
        int                     autharrlen = 0;
        rpcsvc_t                *svc = NULL;
        xlator_t                *mntxl = NULL;
        uuid_t                  volumeid = {0, };
        char                    fhstr[1024];

        req = (rpcsvc_request_t *)frame->local;

        if (!req)
                return -1;

        mntxl = (xlator_t *)cookie;
        ms = (struct mount3_state *)rpcsvc_request_program_private (req);
        if (!ms) {
                gf_log (GF_MNT, GF_LOG_ERROR, "mount state not found");
                op_ret = -1;
                op_errno = EINVAL;
        }

        if (op_ret == -1) {
                gf_log (GF_NFS, GF_LOG_ERROR, "error=%s", strerror (op_errno));
                status = mnt3svc_errno_to_mnterr (op_errno);
        }
        if (status != MNT3_OK)
                goto xmit_res;

        mnt3svc_update_mountlist (ms, req, mntxl->name);
        if (gf_nfs_dvm_off (nfs_state (ms->nfsx))) {
                fh = nfs3_fh_build_indexed_root_fh (ms->nfsx->children, mntxl);
                goto xmit_res;
        }

        __mnt3_get_volume_id (ms, mntxl, volumeid);
        fh = nfs3_fh_build_uuid_root_fh (volumeid);

xmit_res:
        nfs3_fh_to_str (&fh, fhstr);
        gf_log (GF_MNT, GF_LOG_DEBUG, "MNT reply: fh %s, status: %d", fhstr,
                status);
        if (op_ret == 0) {
                svc = rpcsvc_request_service (req);
                autharrlen = rpcsvc_auth_array (svc, mntxl->name, autharr,
                                                10);
        }

        res = mnt3svc_set_mountres3 (status, &fh, autharr, autharrlen);
        mnt3svc_submit_reply (req, (void *)&res,
                              (mnt3_serializer)xdr_serialize_mountres3);

        return 0;
}


int
mnt3_match_dirpath_export (char *expname, char *dirpath)
{
        int     ret = 0;
        size_t  dlen;

        if ((!expname) || (!dirpath))
                return 0;

        /* Some clients send a dirpath for mount that includes the slash at the
         * end. String compare for searching the export will fail because our
         * exports list does not include that slash. Remove the slash to
         * compare.
         */
        dlen = strlen (dirpath);
        if (dlen && dirpath [dlen - 1] == '/')
                dirpath [dlen - 1] = '\0';

        if (dirpath[0] != '/')
                expname++;

        if (strcmp (expname, dirpath) == 0)
                ret = 1;

        return ret;
}


int
mnt3svc_mount_inode (rpcsvc_request_t *req, struct mount3_state *ms,
                     xlator_t * xl, inode_t *exportinode)
{
        int             ret = -EFAULT;
        nfs_user_t      nfu = {0, };
        loc_t           exportloc = {0, };

        if ((!req) || (!xl) || (!ms) || (!exportinode))
                return ret;

        ret = nfs_inode_loc_fill (exportinode, &exportloc, NFS_RESOLVE_EXIST);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Loc fill failed for export inode"
                        ": gfid %s, volume: %s",
                        uuid_utoa (exportinode->gfid), xl->name);
                goto err;
        }

        /* To service the mount request, all we need to do
         * is to send a lookup fop that returns the stat
         * for the root of the child volume. This is
         * used to build the root fh sent to the client.
         */
        nfs_request_user_init (&nfu, req);
        ret = nfs_lookup (ms->nfsx, xl, &nfu, &exportloc,
                          mnt3svc_lookup_mount_cbk, (void *)req);

        nfs_loc_wipe (&exportloc);
err:
        return ret;
}


/* For a volume mount request, we just have to create loc on the root inode,
 * and send a lookup. In the lookup callback the mount reply is send along with
 * the file handle.
 */
int
mnt3svc_volume_mount (rpcsvc_request_t *req, struct mount3_state *ms,
                      struct mnt3_export *exp)
{
        inode_t         *exportinode = NULL;
        int             ret = -EFAULT;
        uuid_t          rootgfid = {0, };

        if ((!req) || (!exp) || (!ms))
                return ret;

        rootgfid[15] = 1;
        exportinode = inode_find (exp->vol->itable, rootgfid);
        if (!exportinode) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to get root inode");
                ret = -ENOENT;
                goto err;
        }

        ret = mnt3svc_mount_inode (req, ms, exp->vol, exportinode);
        inode_unref (exportinode);

err:
        return ret;
}


/* The catch with directory exports is that the first component of the export
 * name will be the name of the volume.
 * Any lookup that needs to be performed to build the directory's file handle
 * needs to start from the directory path from the root of the volume. For that
 * we need to strip out the volume name first.
 */
char *
__volume_subdir (char *dirpath, char **volname)
{
        char    *subdir = NULL;
        int     volname_len = 0;

        if (!dirpath)
                return NULL;

        if (dirpath[0] == '/')
                dirpath++;

        subdir = index (dirpath, (int)'/');
        if (!subdir)
                goto out;

        if (!volname)
                goto out;

        if (!*volname)
                goto out;

        /* subdir points to the first / after the volume name while dirpath
         * points to the first char of the volume name.
         */
        volname_len = subdir - dirpath;
        strncpy (*volname, dirpath, volname_len);
        *(*volname + volname_len) = '\0';
out:
        return subdir;
}


void
mnt3_resolve_state_wipe (mnt3_resolve_t *mres)
{
        if (!mres)
                return;

        nfs_loc_wipe (&mres->resolveloc);
        GF_FREE (mres);

}


/* Sets up the component argument to contain the next component in the path and
 * sets up path as an absolute path starting from the next component.
 */
char *
__setup_next_component (char *path, char *component)
{
        char    *comp = NULL;
        char    *nextcomp = NULL;

        if ((!path) || (!component))
                return NULL;

        strcpy (component, path);
        comp = index (component, (int)'/');
        if (!comp)
                goto err;

        comp++;
        nextcomp = index (comp, (int)'/');
        if (nextcomp) {
                strcpy (path, nextcomp);
                *nextcomp = '\0';
        } else
                path[0] = '\0';

err:
        return comp;
}

int32_t
mnt3_resolve_subdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         int32_t op_ret, int32_t op_errno, inode_t *inode,
                         struct iatt *buf, dict_t *xattr,
                         struct iatt *postparent);

/* There are multiple components in the directory export path and each one
 * needs to be looked up one after the other.
 */
int
__mnt3_resolve_export_subdir_comp (mnt3_resolve_t *mres)
{
        char            dupsubdir[MNTPATHLEN];
        char            *nextcomp = NULL;
        int             ret = -EFAULT;
        nfs_user_t      nfu = {0, };
        uuid_t          gfid = {0, };

        if (!mres)
                return ret;

        nextcomp = __setup_next_component (mres->remainingdir, dupsubdir);
        if (!nextcomp)
                goto err;

        /* Wipe the contents of the previous component */
        uuid_copy (gfid, mres->resolveloc.inode->gfid);
        nfs_loc_wipe (&mres->resolveloc);
        ret = nfs_entry_loc_fill (mres->exp->vol->itable, gfid, nextcomp,
                                  &mres->resolveloc, NFS_RESOLVE_CREATE);
        if ((ret < 0) && (ret != -2)) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to resolve and create "
                        "inode: parent gfid %s, entry %s",
                        uuid_utoa (gfid), nextcomp);
                ret = -EFAULT;
                goto err;
        }

        nfs_request_user_init (&nfu, mres->req);
        ret = nfs_lookup (mres->mstate->nfsx, mres->exp->vol, &nfu,
                          &mres->resolveloc, mnt3_resolve_subdir_cbk, mres);

err:
        return ret;
}


int32_t
mnt3_resolve_subdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         int32_t op_ret, int32_t op_errno, inode_t *inode,
                         struct iatt *buf, dict_t *xattr,
                         struct iatt *postparent)
{
        mnt3_resolve_t          *mres = NULL;
        mountstat3              mntstat = MNT3ERR_SERVERFAULT;
        struct nfs3_fh          fh = {{0}, };
        int                     autharr[10];
        int                     autharrlen = 0;
        rpcsvc_t                *svc = NULL;
        mountres3               res = {0, };
        xlator_t                *mntxl = NULL;

        mres = frame->local;
        mntxl = (xlator_t *)cookie;
        if (op_ret == -1) {
                gf_log (GF_NFS, GF_LOG_ERROR, "path=%s (%s)",
                        mres->resolveloc.path, strerror (op_errno));
                mntstat = mnt3svc_errno_to_mnterr (op_errno);
                goto err;
        }

        inode_link (mres->resolveloc.inode, mres->resolveloc.parent,
                    mres->resolveloc.name, buf);

        nfs3_fh_build_child_fh (&mres->parentfh, buf, &fh);
        if (strlen (mres->remainingdir) <= 0) {
                op_ret = -1;
                mntstat = MNT3_OK;
                mnt3svc_update_mountlist (mres->mstate, mres->req,
                                          mres->exp->expname);
                goto err;
        }

        mres->parentfh = fh;
        op_ret = __mnt3_resolve_export_subdir_comp (mres);
        if (op_ret < 0)
                mntstat = mnt3svc_errno_to_mnterr (-op_ret);
err:
        if (op_ret == -1) {
                gf_log (GF_MNT, GF_LOG_DEBUG, "Mount reply status: %d",
                        mntstat);
                svc = rpcsvc_request_service (mres->req);
                autharrlen = rpcsvc_auth_array (svc, mntxl->name, autharr,
                                                10);

                res = mnt3svc_set_mountres3 (mntstat, &fh, autharr, autharrlen);
                mnt3svc_submit_reply (mres->req, (void *)&res,
                                      (mnt3_serializer)xdr_serialize_mountres3);
                mnt3_resolve_state_wipe (mres);
        }

        return 0;
}



/* We will always have to perform a hard lookup on all the components of a
 * directory export for a mount request because in the mount reply we need the
 * file handle of the directory. Our file handle creation code is designed with
 * the assumption that to build a child file/dir fh, we'll always have the
 * parent dir's fh available so that we may copy the hash array of the previous
 * dir levels.
 *
 * Since we do not store the file handles anywhere, for every mount request we
 * must resolve the file handles of every component so that the parent dir file
 * of the exported directory can be built.
 */
int
__mnt3_resolve_subdir (mnt3_resolve_t *mres)
{
        char            dupsubdir[MNTPATHLEN];
        char            *firstcomp = NULL;
        int             ret = -EFAULT;
        nfs_user_t      nfu = {0, };
        uuid_t          rootgfid = {0, };

        if (!mres)
                return ret;

        firstcomp = __setup_next_component (mres->remainingdir, dupsubdir);
        if (!firstcomp)
                goto err;

        rootgfid[15] = 1;
        ret = nfs_entry_loc_fill (mres->exp->vol->itable, rootgfid, firstcomp,
                                  &mres->resolveloc, NFS_RESOLVE_CREATE);
        if ((ret < 0) && (ret != -2)) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to resolve and create "
                        "inode for volume root: %s", mres->exp->vol->name);
                ret = -EFAULT;
                goto err;
        }

        nfs_request_user_init (&nfu, mres->req);
        ret = nfs_lookup (mres->mstate->nfsx, mres->exp->vol, &nfu,
                          &mres->resolveloc, mnt3_resolve_subdir_cbk, mres);

err:
        return ret;
}


/**
 * This function will verify if the client is allowed to mount
 * the directory or not. Client's IP address will be compared with
 * allowed IP list or range present in mnt3_export structure.
 *
 * @param req - RPC request. This structure contains client's IP address.
 * @param export - mnt3_export structure. Contains allowed IP list/range.
 *
 * @return 0 - on Success and -EACCES on failure.
 */
int
mnt3_verify_auth (rpcsvc_request_t *req, struct mnt3_export *export)
{
        int                     retvalue = -EACCES;
        int                     ret = 0;
        int                     shiftbits = 0;
        uint32_t                ipv4netmask = 0;
        uint32_t                routingprefix = 0;
        struct host_auth_spec   *host = NULL;
        struct sockaddr_in      *client_addr = NULL;
        struct sockaddr_in      *allowed_addr = NULL;
        struct addrinfo         *allowed_addrinfo = NULL;

        /* Sanity check */
        if ((NULL == req) ||
            (NULL == req->trans) ||
            (NULL == export) ||
            (NULL == export->hostspec)) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Invalid argument");
                return retvalue;
        }

        host = export->hostspec;


        /* Client's IP address. */
        client_addr = (struct sockaddr_in *)(&(req->trans->peerinfo.sockaddr));

        /* Try to see if the client IP matches the allowed IP list.*/
        while (NULL != host){
                GF_ASSERT (host->host_addr);

                if (NULL != allowed_addrinfo) {
                        freeaddrinfo (allowed_addrinfo);
                        allowed_addrinfo = NULL;
                }

                /* Get the addrinfo for the allowed host (host_addr). */
                ret = getaddrinfo (host->host_addr,
                                NULL,
                                NULL,
                                &allowed_addrinfo);
                if (0 != ret){
                        gf_log (GF_MNT, GF_LOG_ERROR, "getaddrinfo: %s\n",
                                gai_strerror (ret));
                        host = host->next;

                        /* Failed to get IP addrinfo. Continue to check other
                         * allowed IPs in the list.
                         */
                        continue;
                }

                allowed_addr = (struct sockaddr_in *)(allowed_addrinfo->ai_addr);

                if (NULL == allowed_addr) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Invalid structure");
                        break;
                }

                if (AF_INET == allowed_addr->sin_family){
                        if (IPv4_ADDR_SIZE < host->routeprefix) {
                                gf_log (GF_MNT, GF_LOG_ERROR, "invalid IP "
                                        "configured for export-dir AUTH");
                                host = host->next;
                                continue;
                        }

                        /* -1 means no route prefix is provided. In this case
                         * the IP should be an exact match. Which is same as
                         * providing a route prefix of IPv4_ADDR_SIZE.
                         */
                        if (-1 == host->routeprefix) {
                                routingprefix = IPv4_ADDR_SIZE;
                        } else {
                                routingprefix = host->routeprefix;
                        }

                        /* Create a mask from the routing prefix. User provided
                         * CIDR address is split into IP address (host_addr) and
                         * routing prefix (routeprefix). This CIDR address may
                         * denote a single, distinct interface address or the
                         * beginning address of an entire network.
                         *
                         * e.g. the IPv4 block 192.168.100.0/24 represents the
                         * 256 IPv4 addresses from 192.168.100.0 to
                         * 192.168.100.255.
                         * Therefore to check if an IP matches 192.168.100.0/24
                         * we should mask the IP with FFFFFF00 and compare it
                         * with host address part of CIDR.
                         */
                        shiftbits = IPv4_ADDR_SIZE - routingprefix;
                        ipv4netmask = 0xFFFFFFFFUL << shiftbits;

                        /* Mask both the IPs and then check if they match
                         * or not. */
                        if (COMPARE_IPv4_ADDRS (allowed_addr,
                                                client_addr,
                                                ipv4netmask)){
                                retvalue = 0;
                                break;
                        }
                }

                /* Client IP didn't match the allowed IP.
                 * Check with the next allowed IP.*/
               host = host->next;
        }

        if (NULL != allowed_addrinfo) {
               freeaddrinfo (allowed_addrinfo);
        }

        return retvalue;
}

int
mnt3_resolve_subdir (rpcsvc_request_t *req, struct mount3_state *ms,
                     struct mnt3_export *exp, char *subdir)
{
        mnt3_resolve_t  *mres = NULL;
        int             ret = -EFAULT;
        struct nfs3_fh  pfh = GF_NFS3FH_STATIC_INITIALIZER;

        if ((!req) || (!ms) || (!exp) || (!subdir))
                return ret;

        /* Need to check AUTH */
        if (NULL != exp->hostspec) {
                ret = mnt3_verify_auth (req, exp);
                if (0 != ret) {
                        gf_log (GF_MNT,GF_LOG_ERROR,
                                        "AUTH verification failed");
                        return ret;
                }
        }

        mres = GF_CALLOC (1, sizeof (mnt3_resolve_t), gf_nfs_mt_mnt3_resolve);
        if (!mres) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation failed");
                goto err;
        }

        mres->exp = exp;
        mres->mstate = ms;
        mres->req = req;
        strcpy (mres->remainingdir, subdir);
        if (gf_nfs_dvm_off (nfs_state (ms->nfsx)))
                pfh = nfs3_fh_build_indexed_root_fh (mres->mstate->nfsx->children, mres->exp->vol);
        else
                pfh = nfs3_fh_build_uuid_root_fh (exp->volumeid);

        mres->parentfh = pfh;
        ret = __mnt3_resolve_subdir (mres);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to resolve export dir: %s"
                        , mres->exp->expname);
                GF_FREE (mres);
        }

err:
        return ret;
}


int
mnt3_resolve_export_subdir (rpcsvc_request_t *req, struct mount3_state *ms,
                            struct mnt3_export *exp)
{
        char            *volume_subdir = NULL;
        int             ret = -EFAULT;

        if ((!req) || (!ms) || (!exp))
                return ret;

        volume_subdir = __volume_subdir (exp->expname, NULL);
        if (!volume_subdir)
                goto err;

        ret = mnt3_resolve_subdir (req, ms, exp, volume_subdir);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to resolve export dir: %s"
                        , exp->expname);
                goto err;
        }

err:
        return ret;
}


int
mnt3svc_mount (rpcsvc_request_t *req, struct mount3_state *ms,
               struct mnt3_export *exp)
{
        int     ret = -EFAULT;

        if ((!req) || (!ms) || (!exp))
                return ret;

        if (exp->exptype == MNT3_EXPTYPE_VOLUME)
                ret = mnt3svc_volume_mount (req, ms, exp);
        else if (exp->exptype == MNT3_EXPTYPE_DIR)
                ret = mnt3_resolve_export_subdir (req, ms, exp);

        return ret;
}


/* mnt3_mntpath_to_xlator sets this to 1 if the mount is for a full
* volume or 2 for a subdir in the volume.
*/
struct mnt3_export *
mnt3_mntpath_to_export (struct mount3_state *ms, char *dirpath)
{
        struct mnt3_export      *exp = NULL;
        struct mnt3_export      *found = NULL;

        if ((!ms) || (!dirpath))
                return NULL;

        list_for_each_entry (exp, &ms->exportlist, explist) {

                /* Search for the an exact match with the volume */
                if (mnt3_match_dirpath_export (exp->expname, dirpath)) {
                        found = exp;
                        gf_log (GF_MNT, GF_LOG_DEBUG, "Found export volume: "
                                "%s", exp->vol->name);
                        goto foundexp;
                }
        }

        gf_log (GF_MNT, GF_LOG_DEBUG, "Export not found");
foundexp:
        return found;
}


int
mnt3_check_client_net (struct mount3_state *ms, rpcsvc_request_t *req,
                       xlator_t *targetxl)
{

        rpcsvc_t                *svc = NULL;
        rpc_transport_t         *trans = NULL;
        struct sockaddr_storage sastorage = {0,};
        char                    peer[RPCSVC_PEER_STRLEN] = {0,};
        int                     ret = -1;

        if ((!ms) || (!req) || (!targetxl))
                return -1;

        svc = rpcsvc_request_service (req);

        trans = rpcsvc_request_transport (req);
        ret = rpcsvc_transport_peeraddr (trans, peer, RPCSVC_PEER_STRLEN,
                                         &sastorage, sizeof (sastorage));
        if (ret != 0) {
                gf_log (GF_MNT, GF_LOG_WARNING, "Failed to get peer addr: %s",
                        gai_strerror (ret));
        }

        ret = rpcsvc_auth_check (svc->options, targetxl->name, trans);
        if (ret == RPCSVC_AUTH_REJECT) {
                gf_log (GF_MNT, GF_LOG_INFO, "Peer %s  not allowed", peer);
                goto err;
        }

        ret = rpcsvc_transport_privport_check (svc, targetxl->name,
                                               rpcsvc_request_transport (req));
        if (ret == RPCSVC_AUTH_REJECT) {
                gf_log (GF_MNT, GF_LOG_INFO, "Peer %s rejected. Unprivileged "
                        "port not allowed", peer);
                goto err;
        }

        ret = 0;
err:
        return ret;
}


int
mnt3_parse_dir_exports (rpcsvc_request_t *req, struct mount3_state *ms,
                        char *subdir)
{
        char                    volname[1024];
        struct mnt3_export      *exp = NULL;
        char                    *volname_ptr = NULL;
        int                     ret = -1;

        if ((!ms) || (!subdir))
                return -1;

        volname_ptr = volname;
        subdir = __volume_subdir (subdir, &volname_ptr);
        if (!subdir)
                goto err;

        exp = mnt3_mntpath_to_export (ms, volname);
        if (!exp)
                goto err;

        ret = mnt3_resolve_subdir (req, ms, exp, subdir);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to resolve export dir: %s"
                        , subdir);
                goto err;
        }

err:
        return ret;
}


int
mnt3_find_export (rpcsvc_request_t *req, char *path, struct mnt3_export **e)
{
        int                     ret = -EFAULT;
        struct mount3_state     *ms = NULL;
        struct mnt3_export      *exp = NULL;

        if ((!req) || (!path) || (!e))
                return -1;

        ms = (struct mount3_state *) rpcsvc_request_program_private (req);
        if (!ms) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Mount state not present");
                rpcsvc_request_seterr (req, SYSTEM_ERR);
                goto err;
        }

        gf_log (GF_MNT, GF_LOG_DEBUG, "dirpath: %s", path);
        exp = mnt3_mntpath_to_export (ms, path);
        if (exp) {
                ret = 0;
                *e = exp;
                goto err;
        }

        if (!gf_mnt3_export_dirs(ms)) {
                ret = -1;
                goto err;
        }

        ret = mnt3_parse_dir_exports (req, ms, path);
        if (ret == 0) {
                ret = -2;
                goto err;
        }

err:
        return ret;
}


int
mnt3svc_mnt (rpcsvc_request_t *req)
{
        struct iovec            pvec = {0, };
        char                    path[MNTPATHLEN];
        int                     ret = -1;
        struct mount3_state     *ms = NULL;
        mountstat3              mntstat = MNT3ERR_SERVERFAULT;
        struct mnt3_export      *exp = NULL;
        struct nfs_state        *nfs = NULL;

        if (!req)
                return -1;

        pvec.iov_base = path;
        pvec.iov_len = MNTPATHLEN;
        ret = xdr_to_mountpath (pvec, req->msg[0]);
        if (ret == -1) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to decode args");
                rpcsvc_request_seterr (req, GARBAGE_ARGS);
                goto rpcerr;
        }

        ms = (struct mount3_state *)rpcsvc_request_program_private (req);
        if (!ms) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Mount state not present");
                rpcsvc_request_seterr (req, SYSTEM_ERR);
                ret = -1;
                goto rpcerr;
        }

        ret = 0;
        nfs = (struct nfs_state *)ms->nfsx->private;
        gf_log (GF_MNT, GF_LOG_DEBUG, "dirpath: %s", path);
        ret = mnt3_find_export (req, path, &exp);
        if (ret == -2) {
                ret = 0;
                goto rpcerr;
        } else if (ret < 0) {
                ret = -1;
                mntstat = MNT3ERR_NOENT;
                goto mnterr;
        }

        if (!nfs_subvolume_started (nfs, exp->vol)) {
                gf_log (GF_MNT, GF_LOG_DEBUG, "Volume %s not started",
                        exp->vol->name);
                ret = -1;
                mntstat = MNT3ERR_NOENT;
                goto mnterr;
        }

        ret = mnt3_check_client_net (ms, req, exp->vol);
        if (ret == RPCSVC_AUTH_REJECT) {
                mntstat = MNT3ERR_ACCES;
                gf_log (GF_MNT, GF_LOG_DEBUG, "Client mount not allowed");
                ret = -1;
                goto mnterr;
        }

        ret = mnt3svc_mount (req, ms, exp);
        if (ret < 0)
                mntstat = mnt3svc_errno_to_mnterr (-ret);
mnterr:
        if (ret < 0) {
                mnt3svc_mnt_error_reply (req, mntstat);
                ret = 0;
        }

rpcerr:
        return ret;
}


int
mnt3svc_null (rpcsvc_request_t *req)
{
        struct iovec    dummyvec = {0, };

        if (!req) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Got NULL request!");
                return 0;
        }
        rpcsvc_submit_generic (req, &dummyvec, 1,  NULL, 0, NULL);
        return 0;
}


mountlist
__build_mountlist (struct mount3_state *ms, int *count)
{
        struct mountbody        *mlist = NULL;
        struct mountbody        *prev = NULL;
        struct mountbody        *first = NULL;
        size_t                  namelen = 0;
        int                     ret = -1;
        struct mountentry       *me = NULL;

        if ((!ms) || (!count))
                return NULL;

        *count = 0;
        gf_log (GF_MNT, GF_LOG_DEBUG, "Building mount list:");
        list_for_each_entry (me, &ms->mountlist, mlist) {
                namelen = strlen (me->exname);
                mlist = GF_CALLOC (1, sizeof (*mlist), gf_nfs_mt_mountbody);
                if (!mlist) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation"
                                " failed");
                        goto free_list;
                }

                mlist->ml_directory = GF_CALLOC (namelen + 2, sizeof (char),
                                                 gf_nfs_mt_char);
                if (!mlist->ml_directory) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation"
                                " failed");
                        goto free_list;
                }

                strcpy (mlist->ml_directory, "/");
                strcat (mlist->ml_directory, me->exname);

                namelen = strlen (me->hostname);
                mlist->ml_hostname = GF_CALLOC (namelen + 2, sizeof (char),
                                                gf_nfs_mt_char);
                if (!mlist->ml_hostname) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation"
                                " failed");
                        goto free_list;
                }

                strcat (mlist->ml_hostname, me->hostname);

                gf_log (GF_MNT, GF_LOG_DEBUG, "mount entry: dir: %s, host: %s",
                        mlist->ml_directory, mlist->ml_hostname);
                if (prev) {
                        prev->ml_next = mlist;
                        prev = mlist;
                } else
                        prev = mlist;

                if (!first)
                        first = mlist;

                (*count)++;
        }

        ret = 0;

free_list:
        if (ret == -1) {
                xdr_free_mountlist (first);
                first = NULL;
        }

        return first;
}


mountlist
mnt3svc_build_mountlist (struct mount3_state *ms, int *count)
{
        struct mountbody        *first = NULL;

        LOCK (&ms->mountlock);
        {
                first = __build_mountlist (ms, count);
        }
        UNLOCK (&ms->mountlock);

        return first;
}


int
mnt3svc_dump (rpcsvc_request_t *req)
{
        int                     ret = -1;
        struct mount3_state     *ms = NULL;
        mountlist               mlist;
        mountstat3              mstat = 0;
        mnt3_serializer         sfunc = NULL;
        void                    *arg = NULL;


        if (!req)
                return -1;

        ms = (struct mount3_state *)rpcsvc_request_program_private (req);
        if (!ms) {
                rpcsvc_request_seterr (req, SYSTEM_ERR);
                goto rpcerr;
        }

        sfunc = (mnt3_serializer)xdr_serialize_mountlist;
        mlist = mnt3svc_build_mountlist (ms, &ret);
        arg = &mlist;

        if (!mlist) {
                if (ret != 0) {
                        rpcsvc_request_seterr (req, SYSTEM_ERR);
                        ret = -1;
                        goto rpcerr;
                } else {
                        arg = &mstat;
                        sfunc = (mnt3_serializer)xdr_serialize_mountstat3;
                }
        }

        mnt3svc_submit_reply (req, arg, sfunc);

        xdr_free_mountlist (mlist);
        ret = 0;

rpcerr:
        return ret;
}


int
__mnt3svc_umount (struct mount3_state *ms, char *dirpath, char *hostname)
{
        struct mountentry       *me = NULL;
        char                    *exname = NULL;
        int                     ret = -1;

        if ((!ms) || (!dirpath) || (!hostname))
                return -1;

        if (list_empty (&ms->mountlist))
                return 0;

        if (dirpath[0] == '/')
                exname = dirpath+1;
        else
                exname = dirpath;

        list_for_each_entry (me, &ms->mountlist, mlist) {
               if ((strcmp (me->exname, exname) == 0) &&
                    (strcmp (me->hostname, hostname) == 0)) {
                       ret = 0;
                       break;
               }
        }

        /* Need this check here because at the end of the search me might still
         * be pointing to the last entry, which may not be the one we're
         * looking for.
         */
        if (ret == -1)  {/* Not found in list. */
                gf_log (GF_MNT, GF_LOG_DEBUG, "Export not found");
                goto ret;
        }

        if (!me)
                goto ret;

        gf_log (GF_MNT, GF_LOG_DEBUG, "Unmounting: dir %s, host: %s",
                me->exname, me->hostname);
        list_del (&me->mlist);
        GF_FREE (me);
        ret = 0;
ret:
        return ret;
}



int
mnt3svc_umount (struct mount3_state *ms, char *dirpath, char *hostname)
{
        int ret = -1;
        if ((!ms) || (!dirpath) || (!hostname))
                return -1;

        LOCK (&ms->mountlock);
        {
               ret = __mnt3svc_umount (ms, dirpath, hostname);
        }
        UNLOCK (&ms->mountlock);

        return ret;
}


int
mnt3svc_umnt (rpcsvc_request_t *req)
{
        char                    hostname[MNTPATHLEN];
        char                    dirpath[MNTPATHLEN];
        struct iovec            pvec = {0, };
        int                     ret = -1;
        struct mount3_state     *ms = NULL;
        mountstat3              mstat = MNT3_OK;
        char                    *colon = NULL;

        if (!req)
                return -1;

        /* Remove the mount point from the exports list. */
        pvec.iov_base = dirpath;
        pvec.iov_len = MNTPATHLEN;
        ret = xdr_to_mountpath (pvec, req->msg[0]);
        if (ret == -1) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed decode args");
                rpcsvc_request_seterr (req, GARBAGE_ARGS);
                goto rpcerr;
        }

        ms = (struct mount3_state *)rpcsvc_request_program_private (req);
        if (!ms) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Mount state not present");
                rpcsvc_request_seterr (req, SYSTEM_ERR);
                ret = -1;
                goto rpcerr;
        }

        ret = rpcsvc_transport_peername (req->trans, hostname, MNTPATHLEN);
        if (ret != 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to get remote name: %s",
                        gai_strerror (ret));
                goto rpcerr;
        }

        colon = strrchr (hostname, ':');
        if (colon) {
                *colon= '\0';
        }
        gf_log (GF_MNT, GF_LOG_DEBUG, "dirpath: %s, hostname: %s", dirpath,
                hostname);
        ret = mnt3svc_umount (ms, dirpath, hostname);

        if (ret == -1) {
                ret = 0;
                mstat = MNT3ERR_NOENT;
        }
        /* FIXME: also take care of the corner case where the
         * client was resolvable at mount but not at the umount - vice-versa.
         */
        mnt3svc_submit_reply (req, &mstat,
                              (mnt3_serializer)xdr_serialize_mountstat3);

rpcerr:
        return ret;
}


int
__mnt3svc_umountall (struct mount3_state *ms)
{
        struct mountentry       *me = NULL;
        struct mountentry       *tmp = NULL;

        if (!ms)
                return -1;

        if (list_empty (&ms->mountlist))
                return 0;

        list_for_each_entry_safe (me, tmp, &ms->mountlist, mlist) {
                list_del (&me->mlist);
                GF_FREE (me);
        }

        return 0;
}


int
mnt3svc_umountall (struct mount3_state *ms)
{
        int     ret = -1;
        if (!ms)
                return -1;

        LOCK (&ms->mountlock);
        {
               ret = __mnt3svc_umountall (ms);
        }
        UNLOCK (&ms->mountlock);

        return ret;
}


int
mnt3svc_umntall (rpcsvc_request_t *req)
{
        int                     ret = RPCSVC_ACTOR_ERROR;
        struct mount3_state     *ms = NULL;
        mountstat3              mstat = MNT3_OK;

        if (!req)
                return ret;

        ms = (struct mount3_state *)rpcsvc_request_program_private (req);
        if (!ms) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Mount state not present");
                rpcsvc_request_seterr (req, SYSTEM_ERR);
                goto rpcerr;
        }

        mnt3svc_umountall (ms);
        mnt3svc_submit_reply (req, &mstat,
                              (mnt3_serializer)xdr_serialize_mountstat3);

        ret = RPCSVC_ACTOR_SUCCESS;
rpcerr:
        return ret;
}


exports
mnt3_xlchildren_to_exports (rpcsvc_t *svc, struct mount3_state *ms)
{
        struct exportnode       *elist = NULL;
        struct exportnode       *prev = NULL;
        struct exportnode       *first = NULL;
        size_t                  namelen = 0;
        int                     ret = -1;
        char                    *addrstr = NULL;
        struct mnt3_export      *ent = NULL;
        struct nfs_state        *nfs = NULL;

        if ((!ms) || (!svc))
                return NULL;

        nfs = (struct nfs_state *)ms->nfsx->private;
        list_for_each_entry(ent, &ms->exportlist, explist) {

                /* If volume is not started yet, do not list it for tools like
                 * showmount.
                 */
                if (!nfs_subvolume_started (nfs, ent->vol))
                        continue;

                namelen = strlen (ent->expname) + 1;
                elist = GF_CALLOC (1, sizeof (*elist), gf_nfs_mt_exportnode);
                if (!elist) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation"
                                " failed");
                        goto free_list;
                }

                elist->ex_dir = GF_CALLOC (namelen + 2, sizeof (char),
                                           gf_nfs_mt_char);
                if (!elist->ex_dir) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation"
                                " failed");
                        goto free_list;
                }

                strcpy (elist->ex_dir, ent->expname);

                addrstr = rpcsvc_volume_allowed (svc->options,
                                                 ent->vol->name);
                if (addrstr)
                        addrstr = gf_strdup (addrstr);
                else
                        addrstr = gf_strdup ("No Access");

                elist->ex_groups = GF_CALLOC (1, sizeof (struct groupnode),
                                              gf_nfs_mt_groupnode);
                if (!elist->ex_groups) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation"
                                " failed");
                        goto free_list;
                }

                elist->ex_groups->gr_name = addrstr;
                if (prev) {
                        prev->ex_next = elist;
                        prev = elist;
                } else
                        prev = elist;

                if (!first)
                        first = elist;
        }

        ret = 0;

free_list:
        if (ret == -1) {
                xdr_free_exports_list (first);
                first = NULL;
        }

        return first;
}


int
mnt3svc_export (rpcsvc_request_t *req)
{
        struct mount3_state     *ms = NULL;
        exports                 elist = NULL;
        int                     ret = -1;

        if (!req)
                return -1;

        ms = (struct mount3_state *)rpcsvc_request_program_private (req);
        if (!ms) {
                gf_log (GF_MNT, GF_LOG_ERROR, "mount state not found");
                rpcsvc_request_seterr (req, SYSTEM_ERR);
                goto err;
        }

        /* Using the children translator names, build the export list */
        elist = mnt3_xlchildren_to_exports (rpcsvc_request_service (req),
                                            ms);
        /* Do not return error when exports list is empty. An exports list can
         * be empty when no subvolumes have come up. No point returning error
         * and confusing the user.
        if (!elist) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to build exports list");
                nfs_rpcsvc_request_seterr (req, SYSTEM_ERR);
                goto err;
        }
        */

        /* Note how the serializer is passed to the generic reply function. */
        mnt3svc_submit_reply (req, &elist,
                              (mnt3_serializer)xdr_serialize_exports);

        xdr_free_exports_list (elist);
        ret = 0;
err:
        return ret;
}

/* just declaring, definition is way down below */
rpcsvc_program_t        mnt3prog;

/* nfs3_rootfh used by mount3udp thread needs to access mount3prog.private
 * directly as we don't have nfs xlator pointer to dereference it. But thats OK
 */

struct nfs3_fh *
nfs3_rootfh (char* path)
{
        struct mount3_state     *ms = NULL;
        struct nfs3_fh          *fh = NULL;
        struct mnt3_export      *exp = NULL;
        inode_t                 *inode = NULL;
        char                    *tmp = NULL;

        ms = mnt3prog.private;
        exp = mnt3_mntpath_to_export (ms, path);
        if (exp == NULL)
                goto err;

        tmp = (char *)path;
        tmp = strchr (tmp, '/');
        if (tmp == NULL)
                tmp = "/";

        inode = inode_from_path (exp->vol->itable, tmp);
        if (inode == NULL)
                goto err;

        fh = GF_CALLOC (1, sizeof(*fh), gf_nfs_mt_nfs3_fh);
        if (fh == NULL)
                goto err;
        nfs3_build_fh (inode, exp->volumeid, fh);

err:
        if (inode)
                inode_unref (inode);
        return fh;
}

int
mount3udp_add_mountlist (char *host, dirpath *expname)
{
        struct mountentry       *me = NULL;
        struct mount3_state     *ms = NULL;
        char                    *export = NULL;

        ms = mnt3prog.private;
        me = GF_CALLOC (1, sizeof (*me), gf_nfs_mt_mountentry);
        if (!me)
                return -1;
        export = (char *)expname;
        while (*export == '/')
                export++;

        strcpy (me->exname, export);
        strcpy (me->hostname, host);
        INIT_LIST_HEAD (&me->mlist);
        LOCK (&ms->mountlock);
        {
                list_add_tail (&me->mlist, &ms->mountlist);
        }
        UNLOCK (&ms->mountlock);
        return 0;
}

int
mount3udp_delete_mountlist (char *hostname, dirpath *expname)
{
        struct mount3_state     *ms = NULL;
        char                    *export = NULL;

        ms = mnt3prog.private;
        export = (char *)expname;
        while (*export == '/')
                export++;
        __mnt3svc_umount (ms, export, hostname);
        return 0;
}

/**
 * This function will parse the hostip (IP addres, IP range, or hostname)
 * and fill the host_auth_spec structure.
 *
 * @param hostspec - struct host_auth_spec
 * @param hostip   - IP address, IP range (CIDR format) or hostname
 *
 * @return 0 - on success and -1 on failure
 */
int
mnt3_export_fill_hostspec (struct host_auth_spec* hostspec, const char* hostip)
{
        char *ipdupstr = NULL;
        char *savptr = NULL;
        char *ip = NULL;
        char *token = NULL;
        int  ret = -1;

        /* Create copy of the string so that the source won't change
         */
        ipdupstr = gf_strdup (hostip);
        if (NULL == ipdupstr) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation failed");
                goto err;
        }

        ip = strtok_r (ipdupstr, "/", &savptr);
        hostspec->host_addr = gf_strdup (ip);
        if (NULL == hostspec->host_addr) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation failed");
                goto err;
        }

        /* Check if the IP is in <IP address> / <Range> format.
         * If yes, then strip the range and store it separately.
         */
        token = strtok_r (NULL, "/", &savptr);

        if (NULL == token) {
              hostspec->routeprefix = -1;
        } else {
              hostspec->routeprefix = atoi (token);
        }

        // success
        ret = 0;
err:
        if (NULL != ipdupstr) {
                GF_FREE (ipdupstr);
        }
        return ret;
}


/**
 * This function will parse the AUTH parameter passed along with
 * "export-dir" option. If AUTH parameter is present then it will be
 * stripped from exportpath and stored in mnt3_export (exp) structure.
 *
 * @param exp - mnt3_export structure. Holds information needed for mount.
 * @param exportpath - Value of "export-dir" key. Holds both export path
 *                     and AUTH parameter for the path.
 *                     exportpath format: <abspath>[(hostdesc[|hostspec|...])]
 *
 * @return This function will return 0 on success and -1 on failure.
 */
int
mnt3_export_parse_auth_param (struct mnt3_export* exp, char* exportpath)
{
        char *token = NULL;
        char *savPtr = NULL;
        char *hostip = NULL;
        struct host_auth_spec *host = NULL;
        int ret = 0;

        /* Using exportpath directly in strtok_r because we want
         * to strip off AUTH parameter from exportpath. */
        token = strtok_r (exportpath, "(", &savPtr);

        /* Get the next token, which will be the AUTH parameter. */
        token = strtok_r (NULL, ")", &savPtr);

        if (NULL == token) {
                /* If AUTH is not present then we should return success. */
                return 0;
        }

        /* Free any previously allocated hostspec structure. */
        if (NULL != exp->hostspec) {
                GF_FREE (exp->hostspec);
                exp->hostspec = NULL;
        }

        exp->hostspec = GF_CALLOC (1,
                        sizeof (*(exp->hostspec)),
                        gf_nfs_mt_auth_spec);
        if (NULL == exp->hostspec){
                gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation failed");
                return -1;
        }

        /* AUTH parameter can have multiple entries. For each entry
         * a host_auth_spec structure is created. */
        host = exp->hostspec;

        hostip = strtok_r (token, "|", &savPtr);

        /* Parse all AUTH parameters separated by '|' */
        while (NULL != hostip){
                ret = mnt3_export_fill_hostspec (host, hostip);
                if (0 != ret) {
                        gf_log(GF_MNT, GF_LOG_WARNING,
                                        "Failed to parse hostspec: %s", hostip);
                        goto err;
                }

                hostip = strtok_r (NULL, "|", &savPtr);
                if (NULL == hostip) {
                        break;
                }

                host->next = GF_CALLOC (1, sizeof (*(host)),
                                gf_nfs_mt_auth_spec);
                if (NULL == host->next){
                        gf_log (GF_MNT,GF_LOG_ERROR,
                                        "Memory allocation failed");
                        goto err;
                }
                host = host->next;
        }

        /* In case of success return from here */
        return 0;
err:
        /* In case of failure free up hostspec structure.  */
        FREE_HOSTSPEC (exp);

        return -1;
}

/**
 * exportpath will also have AUTH options (ip address, subnet address or
 * hostname) mentioned.
 * exportpath format: <abspath>[(hostdesc[|hostspec|...])]
 */
struct mnt3_export *
mnt3_init_export_ent (struct mount3_state *ms, xlator_t *xl, char *exportpath,
                      uuid_t volumeid)
{
        struct mnt3_export      *exp = NULL;
        int                     alloclen = 0;
        int                     ret = -1;

        if ((!ms) || (!xl))
                return NULL;

        exp = GF_CALLOC (1, sizeof (*exp), gf_nfs_mt_mnt3_export);
        if (!exp) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation failed");
                return NULL;
        }

        if (NULL != exportpath) {
                /* If exportpath is not NULL then we should check if AUTH
                 * parameter is present or not. If AUTH parameter is present
                 * then it will be stripped and stored in mnt3_export (exp)
                 * structure.
                 */
                if (0 != mnt3_export_parse_auth_param (exp, exportpath)){
                        gf_log (GF_MNT, GF_LOG_ERROR,
                                                "Failed to parse auth param");
                        goto err;
                }
        }


        INIT_LIST_HEAD (&exp->explist);
        if (exportpath)
                alloclen = strlen (xl->name) + 2 + strlen (exportpath);
        else
                alloclen = strlen (xl->name) + 2;

        exp->expname = GF_CALLOC (alloclen, sizeof (char), gf_nfs_mt_char);
        if (!exp->expname) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation failed");
                goto err;
        }

        if (exportpath) {
                gf_log (GF_MNT, GF_LOG_TRACE, "Initing dir export: %s:%s",
                        xl->name, exportpath);
                exp->exptype = MNT3_EXPTYPE_DIR;
                ret = snprintf (exp->expname, alloclen, "/%s%s", xl->name,
                                exportpath);
        } else {
                gf_log (GF_MNT, GF_LOG_TRACE, "Initing volume export: %s",
                        xl->name);
                exp->exptype = MNT3_EXPTYPE_VOLUME;
                ret = snprintf (exp->expname, alloclen, "/%s", xl->name);
        }
        if (ret < 0) {
                gf_log (xl->name, GF_LOG_WARNING,
                        "failed to get the export name");
        }
        /* Just copy without discrimination, we'll determine whether to
         * actually use it when a mount request comes in and a file handle
         * needs to be built.
         */
        uuid_copy (exp->volumeid, volumeid);
        exp->vol = xl;

        /* On success we should return from here*/
        return exp;
err:
        /* On failure free exp and it's members.*/
        if (NULL != exp) {
                FREE_HOSTSPEC (exp);
                GF_FREE (exp);
                exp = NULL;
        }

        return exp;
}


int
__mnt3_init_volume_direxports (struct mount3_state *ms, xlator_t *xlator,
                               char *optstr, uuid_t volumeid)
{
        struct mnt3_export      *newexp = NULL;
        int                     ret = -1;
        char                    *savptr = NULL;
        char                    *dupopt = NULL;
        char                    *token = NULL;

        if ((!ms) || (!xlator) || (!optstr))
                return -1;

        dupopt = gf_strdup (optstr);
        if (!dupopt) {
                gf_log (GF_MNT, GF_LOG_ERROR, "gf_strdup failed");
                goto err;
        }

        token = strtok_r (dupopt, ",", &savptr);
        while (token) {
                newexp = mnt3_init_export_ent (ms, xlator, token, volumeid);
                if (!newexp) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Failed to init dir "
                                "export: %s", token);
                        ret = -1;
                        goto err;
                }

                list_add_tail (&newexp->explist, &ms->exportlist);
                token = strtok_r (NULL, ",", &savptr);
        }

        ret = 0;
err:
        GF_FREE (dupopt);

        return ret;
}


int
__mnt3_init_volume (struct mount3_state *ms, dict_t *opts, xlator_t *xlator)
{
        struct mnt3_export      *newexp = NULL;
        int                     ret = -1;
        char                    searchstr[1024];
        char                    *optstr  = NULL;
        uuid_t                  volumeid = {0, };

        if ((!ms) || (!xlator) || (!opts))
                return -1;

        uuid_clear (volumeid);
        if (gf_nfs_dvm_off (nfs_state (ms->nfsx)))
                goto no_dvm;

        ret = snprintf (searchstr, 1024, "nfs3.%s.volume-id", xlator->name);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "snprintf failed");
                ret = -1;
                goto err;
        }

        if (dict_get (opts, searchstr)) {
                ret = dict_get_str (opts, searchstr, &optstr);
                if (ret < 0) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Failed to read option"
                                ": %s", searchstr);
                        ret = -1;
                        goto err;
                }
        } else {
                gf_log (GF_MNT, GF_LOG_ERROR, "DVM is on but volume-id not "
                        "given for volume: %s", xlator->name);
                ret = -1;
                goto err;
        }

        if (optstr) {
                ret = uuid_parse (optstr, volumeid);
                if (ret < 0) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Failed to parse volume "
                                "UUID");
                        ret = -1;
                        goto err;
                }
        }

no_dvm:
        ret = snprintf (searchstr, 1024, "nfs3.%s.export-dir", xlator->name);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "snprintf failed");
                ret = -1;
                goto err;
        }

        if (dict_get (opts, searchstr)) {
                ret = dict_get_str (opts, searchstr, &optstr);
                if (ret < 0) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Failed to read option: "
                                "%s", searchstr);
                        ret = -1;
                        goto err;
                }

                ret = __mnt3_init_volume_direxports (ms, xlator, optstr,
                                                     volumeid);
                if (ret == -1) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Dir export setup failed"
                                " for volume: %s", xlator->name);
                        goto err;
                }
        }

        if (ms->export_volumes) {
                newexp = mnt3_init_export_ent (ms, xlator, NULL, volumeid);
                if (!newexp) {
                        ret = -1;
                        goto err;
                }

                list_add_tail (&newexp->explist, &ms->exportlist);
        }
        ret = 0;


err:
        return ret;
}


int
__mnt3_init_volume_export (struct mount3_state *ms, dict_t *opts)
{
        int                     ret = -1;
        char                    *optstr  = NULL;
        /* On by default. */
        gf_boolean_t            boolt = _gf_true;

        if ((!ms) || (!opts))
                return -1;

        if (!dict_get (opts, "nfs3.export-volumes")) {
                ret = 0;
                goto err;
        }

        ret = dict_get_str (opts, "nfs3.export-volumes", &optstr);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to read option: "
                        "nfs3.export-volumes");
                ret = -1;
                goto err;
        }

        gf_string2boolean (optstr, &boolt);
        ret = 0;

err:
        if (boolt == _gf_false) {
                gf_log (GF_MNT, GF_LOG_TRACE, "Volume exports disabled");
                ms->export_volumes = 0;
        } else {
                gf_log (GF_MNT, GF_LOG_TRACE, "Volume exports enabled");
                ms->export_volumes = 1;
        }

        return ret;
}


int
__mnt3_init_dir_export (struct mount3_state *ms, dict_t *opts)
{
        int                     ret = -1;
        char                    *optstr  = NULL;
        /* On by default. */
        gf_boolean_t            boolt = _gf_true;

        if ((!ms) || (!opts))
                return -1;

        if (!dict_get (opts, "nfs3.export-dirs")) {
                ret = 0;
                goto err;
        }

        ret = dict_get_str (opts, "nfs3.export-dirs", &optstr);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Failed to read option: "
                        "nfs3.export-dirs");
                ret = -1;
                goto err;
        }

        gf_string2boolean (optstr, &boolt);
        ret = 0;

err:
        if (boolt == _gf_false) {
                gf_log (GF_MNT, GF_LOG_TRACE, "Dir exports disabled");
                ms->export_dirs = 0;
        } else {
                gf_log (GF_MNT, GF_LOG_TRACE, "Dir exports enabled");
                ms->export_dirs = 1;
        }

        return ret;
}


int
mnt3_init_options (struct mount3_state *ms, dict_t *options)
{
        xlator_list_t   *volentry = NULL;
        int             ret = -1;

        if ((!ms) || (!options))
                return -1;

        __mnt3_init_volume_export (ms, options);
        __mnt3_init_dir_export (ms, options);
        volentry = ms->nfsx->children;
        while (volentry) {
                gf_log (GF_MNT, GF_LOG_TRACE, "Initing options for: %s",
                        volentry->xlator->name);
                ret = __mnt3_init_volume (ms, options, volentry->xlator);
                if (ret < 0) {
                        gf_log (GF_MNT, GF_LOG_ERROR, "Volume init failed");
                        goto err;
                }

                volentry = volentry->next;
        }

        ret = 0;
err:
        return ret;
}


struct mount3_state *
mnt3_init_state (xlator_t *nfsx)
{
        struct mount3_state     *ms = NULL;
        int                     ret = -1;

        if (!nfsx)
                return NULL;

        ms = GF_CALLOC (1, sizeof (*ms), gf_nfs_mt_mount3_state);
        if (!ms) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Memory allocation failed");
                return NULL;
        }

        ms->iobpool = nfsx->ctx->iobuf_pool;
        ms->nfsx = nfsx;
        INIT_LIST_HEAD (&ms->exportlist);
        ret = mnt3_init_options (ms, nfsx->options);
        if (ret < 0) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Options init failed");
                return NULL;
        }

        INIT_LIST_HEAD (&ms->mountlist);
        LOCK_INIT (&ms->mountlock);

        return ms;
}

int
mount_init_state (xlator_t *nfsx)
{
        int              ret = -1;
        struct nfs_state *nfs = NULL;

        if (!nfsx)
                goto out;

        nfs = (struct nfs_state *)nfs_state (nfsx);
        /*Maintaining global state for MOUNT1 and MOUNT3*/
        nfs->mstate =  mnt3_init_state (nfsx);
        if (!nfs->mstate) {
                gf_log (GF_NFS, GF_LOG_ERROR, "Failed to allocate"
                        "mount state");
                goto out;
        }
        ret = 0;
out:
        return ret;
}

rpcsvc_actor_t  mnt3svc_actors[MOUNT3_PROC_COUNT] = {
        {"NULL",    MOUNT3_NULL,    mnt3svc_null,    NULL, 0, DRC_NA},
        {"MNT",     MOUNT3_MNT,     mnt3svc_mnt,     NULL, 0, DRC_NA},
        {"DUMP",    MOUNT3_DUMP,    mnt3svc_dump,    NULL, 0, DRC_NA},
        {"UMNT",    MOUNT3_UMNT,    mnt3svc_umnt,    NULL, 0, DRC_NA},
        {"UMNTALL", MOUNT3_UMNTALL, mnt3svc_umntall, NULL, 0, DRC_NA},
        {"EXPORT",  MOUNT3_EXPORT,  mnt3svc_export,  NULL, 0, DRC_NA}
};



/* Static init parts are assigned here, dynamic ones are done in
 * mnt3svc_init and mnt3_init_state.
 * Making MOUNT3 a synctask so that the blocking DNS calls during rpc auth
 * gets offloaded to syncenv, keeping the main/poll thread unblocked
 */
rpcsvc_program_t        mnt3prog = {
                        .progname       = "MOUNT3",
                        .prognum        = MOUNT_PROGRAM,
                        .progver        = MOUNT_V3,
                        .progport       = GF_MOUNTV3_PORT,
                        .actors         = mnt3svc_actors,
                        .numactors      = MOUNT3_PROC_COUNT,
                        .min_auth       = AUTH_NULL,
                        .synctask       = _gf_true,
};



rpcsvc_program_t *
mnt3svc_init (xlator_t *nfsx)
{
        struct mount3_state     *mstate = NULL;
        struct nfs_state        *nfs = NULL;
        dict_t                  *options = NULL;
        char                    *portstr = NULL;
        int                      ret = -1;
        pthread_t                udp_thread;

        if (!nfsx || !nfsx->private)
                return NULL;

        nfs = (struct nfs_state *)nfsx->private;

        gf_log (GF_MNT, GF_LOG_DEBUG, "Initing Mount v3 state");
        mstate = (struct mount3_state *)nfs->mstate;
        if (!mstate) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Mount v3 state init failed");
                goto err;
        }

        mnt3prog.private = mstate;
        options = dict_new ();

        ret = gf_asprintf (&portstr, "%d", GF_MOUNTV3_PORT);
        if (ret == -1)
                goto err;

        ret = dict_set_dynstr (options, "transport.socket.listen-port", portstr);
        if (ret == -1)
                goto err;
        ret = dict_set_str (options, "transport-type", "socket");
        if (ret == -1) {
                gf_log (GF_NFS, GF_LOG_ERROR, "dict_set_str error");
                goto err;
        }

        if (nfs->allow_insecure) {
                ret = dict_set_str (options, "rpc-auth-allow-insecure", "on");
                if (ret == -1) {
                        gf_log (GF_NFS, GF_LOG_ERROR, "dict_set_str error");
                        goto err;
                }
                ret = dict_set_str (options, "rpc-auth.ports.insecure", "on");
                if (ret == -1) {
                        gf_log (GF_NFS, GF_LOG_ERROR, "dict_set_str error");
                        goto err;
                }
        }

        rpcsvc_create_listeners (nfs->rpcsvc, options, nfsx->name);
        if (ret == -1) {
                gf_log (GF_NFS, GF_LOG_ERROR, "Unable to create listeners");
                dict_unref (options);
                goto err;
        }

        if (nfs->mount_udp) {
                pthread_create (&udp_thread, NULL, mount3udp_thread, NULL);
        }
        return &mnt3prog;
err:
        return NULL;
}


rpcsvc_actor_t  mnt1svc_actors[MOUNT1_PROC_COUNT] = {
        {"NULL",    MOUNT1_NULL,    mnt3svc_null,   NULL, 0, DRC_NA},
        {"MNT",     MOUNT1_MNT,     NULL,           NULL, 0, DRC_NA },
        {"DUMP",    MOUNT1_DUMP,    mnt3svc_dump,   NULL, 0, DRC_NA},
        {"UMNT",    MOUNT1_UMNT,    mnt3svc_umnt,   NULL, 0, DRC_NA},
        {"UMNTALL", MOUNT1_UMNTALL, NULL,           NULL, 0, DRC_NA},
        {"EXPORT",  MOUNT1_EXPORT,  mnt3svc_export, NULL, 0, DRC_NA}
};

rpcsvc_program_t        mnt1prog = {
                        .progname       = "MOUNT1",
                        .prognum        = MOUNT_PROGRAM,
                        .progver        = MOUNT_V1,
                        .progport       = GF_MOUNTV1_PORT,
                        .actors         = mnt1svc_actors,
                        .numactors      = MOUNT1_PROC_COUNT,
                        .min_auth       = AUTH_NULL,
                        .synctask       = _gf_true,
};


rpcsvc_program_t *
mnt1svc_init (xlator_t *nfsx)
{
        struct mount3_state     *mstate = NULL;
        struct nfs_state        *nfs = NULL;
        dict_t                  *options = NULL;
        char                    *portstr = NULL;
        int                      ret = -1;

        if (!nfsx || !nfsx->private)
                return NULL;

        nfs = (struct nfs_state *)nfsx->private;

        gf_log (GF_MNT, GF_LOG_DEBUG, "Initing Mount v1 state");
        mstate = (struct mount3_state *)nfs->mstate;
        if (!mstate) {
                gf_log (GF_MNT, GF_LOG_ERROR, "Mount v3 state init failed");
                goto err;
        }

        mnt1prog.private = mstate;

        options = dict_new ();

        ret = gf_asprintf (&portstr, "%d", GF_MOUNTV1_PORT);
        if (ret == -1)
                goto err;

        ret = dict_set_dynstr (options, "transport.socket.listen-port", portstr);
        if (ret == -1)
                goto err;
        ret = dict_set_str (options, "transport-type", "socket");
        if (ret == -1) {
                gf_log (GF_NFS, GF_LOG_ERROR, "dict_set_str error");
                goto err;
        }

        if (nfs->allow_insecure) {
                ret = dict_set_str (options, "rpc-auth-allow-insecure", "on");
                if (ret == -1) {
                        gf_log (GF_NFS, GF_LOG_ERROR, "dict_set_str error");
                        goto err;
                }
                ret = dict_set_str (options, "rpc-auth.ports.insecure", "on");
                if (ret == -1) {
                        gf_log (GF_NFS, GF_LOG_ERROR, "dict_set_str error");
                        goto err;
                }
        }

        rpcsvc_create_listeners (nfs->rpcsvc, options, nfsx->name);
        if (ret == -1) {
                gf_log (GF_NFS, GF_LOG_ERROR, "Unable to create listeners");
                dict_unref (options);
                goto err;
        }

        return &mnt1prog;
err:
        return NULL;
}