summaryrefslogtreecommitdiffstats
path: root/src/H5D.c
blob: a1dfce5be2372628692ed55974aa675393b5f15b (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
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
 * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/****************/
/* Module Setup */
/****************/

#define H5D_PACKAGE		/*suppress error about including H5Dpkg	  */

/* Interface initialization */
#define H5_INTERFACE_INIT_FUNC	H5D_init_interface


/***********/
/* Headers */
/***********/
#include "H5private.h"		/* Generic Functions			*/
#include "H5Dpkg.h"		/* Datasets 				*/
#include "H5Eprivate.h"		/* Error handling		  	*/
#include "H5FLprivate.h"	/* Free Lists                           */
#include "H5FOprivate.h"        /* File objects                         */
#include "H5HLprivate.h"	/* Local heaps				*/
#include "H5Iprivate.h"		/* IDs			  		*/
#include "H5Lprivate.h"		/* Links		  		*/
#include "H5MMprivate.h"	/* Memory management			*/
#include "H5Sprivate.h"		/* Dataspaces 				*/
#include "H5Vprivate.h"		/* Vectors and arrays 			*/

/****************/
/* Local Macros */
/****************/

/******************/
/* Local Typedefs */
/******************/

/* Internal data structure for computing variable-length dataset's total size */
typedef struct {
    hid_t dataset_id;   /* ID of the dataset we are working on */
    hid_t fspace_id;    /* ID of the file dataset's dataspace we are working on */
    hid_t mspace_id;    /* ID of the memory dataset's dataspace we are working on */
    void *fl_tbuf;      /* Ptr to the temporary buffer we are using for fixed-length data */
    void *vl_tbuf;      /* Ptr to the temporary buffer we are using for VL data */
    hid_t xfer_pid;     /* ID of the dataset xfer property list */
    hsize_t size;       /* Accumulated number of bytes for the selection */
} H5D_vlen_bufsize_t;

/********************/
/* Local Prototypes */
/********************/

/* General stuff */
static herr_t H5D_init_storage(H5D_t *dataset, hbool_t full_overwrite, hid_t dxpl_id);
static H5D_shared_t * H5D_new(hid_t dcpl_id, hbool_t creating, hbool_t vl_type);
static H5D_t * H5D_create(H5F_t *file, hid_t type_id,
           const H5S_t *space, hid_t dcpl_id, hid_t dxpl_id);
static herr_t H5D_open_oid(H5D_t *dataset, hid_t dxpl_id);
static herr_t H5D_get_space_status(H5D_t *dset, H5D_space_status_t *allocation, hid_t dxpl_id);
static hsize_t H5D_get_storage_size(H5D_t *dset, hid_t dxpl_id);
static haddr_t H5D_get_offset(const H5D_t *dset);
static herr_t H5D_iterate(void *buf, hid_t type_id, H5S_t *space,
    H5D_operator_t op, void *operator_data);
static herr_t H5D_extend(H5D_t *dataset, const hsize_t *size, hid_t dxpl_id);
static herr_t H5D_set_extent(H5D_t *dataset, const hsize_t *size, hid_t dxpl_id);
static herr_t H5D_init_type(H5F_t *file, const H5D_t *dset, hid_t type_id, const H5T_t *type);

/*********************/
/* Package Variables */
/*********************/

/* Define a "default" dataset transfer property list cache structure to use for default DXPLs */
H5D_dxpl_cache_t H5D_def_dxpl_cache;

/*****************************/
/* Library Private Variables */
/*****************************/

/*******************/
/* Local Variables */
/*******************/

/* Declare a free list to manage the H5D_t and H5D_shared_t structs */
H5FL_DEFINE_STATIC(H5D_t);
H5FL_DEFINE_STATIC(H5D_shared_t);

/* Declare a free list to manage blocks of VL data */
H5FL_BLK_DEFINE_STATIC(vlen_vl_buf);

/* Declare a free list to manage other blocks of VL data */
H5FL_BLK_DEFINE_STATIC(vlen_fl_buf);

/* Declare the external PQ free list for the sieve buffer information */
H5FL_BLK_EXTERN(sieve_buf);

/* Define a static "default" dataset structure to use to initialize new datasets */
static H5D_shared_t H5D_def_dset;


/*-------------------------------------------------------------------------
 * Function:	H5D_init
 *
 * Purpose:	Initialize the interface from some other layer.
 *
 * Return:	Success:	non-negative
 *
 *		Failure:	negative
 *
 * Programmer:	Quincey Koziol
 *              Saturday, March 4, 2000
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5D_init(void)
{
    herr_t ret_value=SUCCEED;   /* Return value */

    FUNC_ENTER_NOAPI(H5D_init, FAIL)
    /* FUNC_ENTER() does all the work */

done:
    FUNC_LEAVE_NOAPI(ret_value)
}


/*--------------------------------------------------------------------------
NAME
   H5D_init_interface -- Initialize interface-specific information
USAGE
    herr_t H5D_init_interface()

RETURNS
    Non-negative on success/Negative on failure
DESCRIPTION
    Initializes any interface-specific data or routines.
NOTES
    Care must be taken when using the H5P functions, since they can cause
    a deadlock in the library when the library is attempting to terminate -QAK

--------------------------------------------------------------------------*/
static herr_t
H5D_init_interface(void)
{
    H5P_genplist_t *def_dcpl;               /* Default Dataset Creation Property list */
    herr_t          ret_value                = SUCCEED;   /* Return value */

    FUNC_ENTER_NOAPI_NOINIT(H5D_init_interface)

    /* Initialize the atom group for the dataset IDs */
    if(H5I_register_type(H5I_DATASET, (size_t)H5I_DATASETID_HASHSIZE, H5D_RESERVED_ATOMS, (H5I_free_t)H5D_close)<H5I_FILE)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize interface")

    /* Reset the "default dataset" information */
    HDmemset(&H5D_def_dset, 0, sizeof(H5D_shared_t));

    /* Get the default dataset creation property list values and initialize the
     * default dataset with them.
     */
    if(NULL == (def_dcpl = H5I_object(H5P_LST_DATASET_CREATE_g)))
        HGOTO_ERROR(H5E_DATASET, H5E_BADTYPE, FAIL, "can't get default dataset creation property list")

    /* Set up the default allocation time information */
    if(H5P_get(def_dcpl, H5D_CRT_ALLOC_TIME_NAME, &H5D_def_dset.alloc_time) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve space allocation time")

    /* Get the default external file list information */
    if(H5P_get(def_dcpl, H5D_CRT_EXT_FILE_LIST_NAME, &H5D_def_dset.efl) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve external file list")

    /* Get the default data storage method */
    if(H5P_get(def_dcpl, H5D_CRT_LAYOUT_NAME, &H5D_def_dset.layout.type) < 0)
         HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve layout")

    /* Get the default fill value time */
    if(H5P_get(def_dcpl, H5D_CRT_FILL_TIME_NAME, &H5D_def_dset.fill_time) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve fill time")

    /* Get the default fill value */
    if(H5P_get(def_dcpl, H5D_CRT_FILL_VALUE_NAME, &H5D_def_dset.fill) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve fill value")

    /* Reset the "default DXPL cache" information */
    HDmemset(&H5D_def_dxpl_cache, 0, sizeof(H5D_dxpl_cache_t));

    /* Get the default DXPL cache information */
    if(H5D_get_dxpl_cache_real(H5P_DATASET_XFER_DEFAULT, &H5D_def_dxpl_cache) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve default DXPL info")

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_init_interface() */


/*-------------------------------------------------------------------------
 * Function:	H5D_term_interface
 *
 * Purpose:	Terminate this interface.
 *
 * Return:	Success:	Positive if anything was done that might
 *				affect other interfaces; zero otherwise.
 *
 * 		Failure:	Negative.
 *
 * Programmer:	Robb Matzke
 *              Friday, November 20, 1998
 *
 *-------------------------------------------------------------------------
 */
int
H5D_term_interface(void)
{
    int		n=0;

    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5D_term_interface)

    if (H5_interface_initialize_g) {
	if ((n=H5I_nmembers(H5I_DATASET))>0) {
            /* The dataset API uses the "force" flag set to true because it
             * is using the "file objects" (H5FO) API functions to track open
             * objects in the file.  Using the H5FO code means that dataset
             * IDs can have reference counts >1, when an existing dataset is
             * opened more than once.  However, the H5I code does not attempt
             * to close objects with reference counts>1 unless the "force" flag
             * is set to true.
             *
             * At some point (probably after the group and datatypes use the
             * the H5FO code), the H5FO code might need to be switched around
             * to storing pointers to the objects being tracked (H5D_t, H5G_t,
             * etc) and reference count those itself instead of relying on the
             * reference counting in the H5I layer.  Then, the "force" flag can
             * be put back to false.
             *
             * Setting the "force" flag to true for all the interfaces won't
             * work because the "file driver" (H5FD) APIs use the H5I reference
             * counting to avoid closing a file driver out from underneath an
             * open file...
             *
             * QAK - 5/13/03
             */
	    H5I_clear_type(H5I_DATASET, TRUE);
	} else {
	    H5I_dec_type_ref(H5I_DATASET);
	    H5_interface_initialize_g = 0;
	    n = 1; /*H5I*/
	}
    }
    FUNC_LEAVE_NOAPI(n)
}


/*--------------------------------------------------------------------------
 NAME
    H5D_get_dcpl_cache
 PURPOSE
    Get all the values for the DCPL cache.
 USAGE
    herr_t H5D_get_dcpl_cache(dcpl_id, cache)
        hid_t dcpl_id;          IN: DCPL to query
        H5D_dcpl_cache_t *cache;IN/OUT: DCPL cache to fill with values
 RETURNS
    Non-negative on success/Negative on failure.
 DESCRIPTION
    Query all the values from a DCPL that are needed by internal routines
    within the library.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
H5D_get_dcpl_cache(hid_t dcpl_id, H5D_dcpl_cache_t *cache)
{
    H5P_genplist_t *dc_plist;   /* Data transfer property list */
    herr_t ret_value = SUCCEED;   /* Return value */

    FUNC_ENTER_NOAPI_NOINIT(H5D_get_dcpl_cache)

    /* Check args */
    HDassert(cache);

    /* Get the dataset transfer property list */
    if (NULL == (dc_plist = H5I_object(dcpl_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset creation property list")

    /* Get I/O pipeline info */
    if(H5P_get(dc_plist, H5D_CRT_DATA_PIPELINE_NAME, &cache->pline) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "Can't retrieve I/O pipeline info")

    /* Get fill value info */
    if(H5P_get(dc_plist, H5D_CRT_FILL_VALUE_NAME, &cache->fill) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "Can't retrieve fill value info")

    /* Get fill time info */
    if(H5P_get(dc_plist, H5D_CRT_FILL_TIME_NAME, &cache->fill_time) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "Can't retrieve fill time")

done:
    FUNC_LEAVE_NOAPI(ret_value)
}   /* H5D_get_dcpl_cache() */


/*-------------------------------------------------------------------------
 * Function:	H5Dcreate
 *
 * Purpose:	Creates a new dataset named NAME at LOC_ID, opens the
 *		dataset for access, and associates with that dataset constant
 *		and initial persistent properties including the type of each
 *		datapoint as stored in the file (TYPE_ID), the size of the
 *		dataset (SPACE_ID), and other initial miscellaneous
 *		properties (DCPL_ID).
 *
 *		All arguments are copied into the dataset, so the caller is
 *		allowed to derive new types, data spaces, and creation
 *		parameters from the old ones and reuse them in calls to
 *		create other datasets.
 *
 * Return:	Success:	The object ID of the new dataset.  At this
 *				point, the dataset is ready to receive its
 *				raw data.  Attempting to read raw data from
 *				the dataset will probably return the fill
 *				value.	The dataset should be closed when
 *				the caller is no longer interested in it.
 *
 *		Failure:	FAIL
 *
 * Programmer:	Robb Matzke
 *		Wednesday, December  3, 1997
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Dcreate(hid_t loc_id, const char *name, hid_t type_id, hid_t space_id,
	  hid_t dcpl_id)
{
    H5G_loc_t	    loc;                /* Object location to insert dataset into */
    H5G_loc_t	    dset_loc;           /* Object location of the dataset */
    H5G_loc_t       insertion_loc;      /* Loc of group in which to create object */
    H5G_name_t      insert_path;        /* Path of group in which to create object */
    H5O_loc_t       insert_oloc;        /* oloc of group in which to create object */
    hbool_t         insert_loc_valid = FALSE;  /* Is insertion_loc valid? */
    H5F_t*          file;               /* File in which dataset is being created */
    H5D_t	   *new_dset = NULL;    /* New dataset's info */
    const H5S_t    *space;              /* Dataspace for dataset */
    hid_t	    dset_id = -1;       /* New dataset's id */
    hid_t           ret_value;          /* Return value */

    FUNC_ENTER_API(H5Dcreate, FAIL)
    H5TRACE5("i","isiii",loc_id,name,type_id,space_id,dcpl_id);

    /* Check arguments */
    if(H5G_loc(loc_id, &loc) < 0)
	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location ID")
    if(!name || !*name)
	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")
    if(H5I_DATATYPE != H5I_get_type(type_id))
	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype ID")
    if(NULL == (space = H5I_object_verify(space_id,H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace ID")
    if(H5P_DEFAULT == dcpl_id)
        dcpl_id = H5P_DATASET_CREATE_DEFAULT;
    else
        if(TRUE != H5P_isa_class(dcpl_id, H5P_DATASET_CREATE))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not dataset create property list ID")

    /* What file is the dataset being added to? */
    insertion_loc.path = &insert_path;
    insertion_loc.oloc = &insert_oloc;
    H5G_loc_reset(&insertion_loc);
    if(H5G_insertion_loc(&loc, name, &insertion_loc, H5AC_dxpl_id) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to locate insertion point")
    insert_loc_valid=TRUE;
    file = insertion_loc.oloc->file;

    /* build and open the new dataset */
    if(NULL == (new_dset = H5D_create(file, type_id, space, dcpl_id, H5AC_dxpl_id)))
	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to create dataset")

    /* Register the new dataset to get an ID for it */
    if((dset_id = H5I_register(H5I_DATASET, new_dset)) < 0)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTREGISTER, FAIL, "unable to register dataset")

    if(H5G_loc(dset_id, &dset_loc) <0)
	HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "unable to get location for dataset")

    /* Link the new dataset */
    if( H5L_link(&loc, name, &dset_loc, H5P_DEFAULT, H5P_DEFAULT, H5AC_dxpl_id) < 0)
	HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create link to dataset")

    ret_value = dset_id;

done:
    if(insert_loc_valid) {
        if(H5G_loc_free(&insertion_loc) < 0)
            HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "unable to free location")
    }
    if(ret_value < 0) {
        if(dset_id >= 0)
        {
          H5I_dec_ref(dset_id);
        }
        else
        {
          if(new_dset != NULL) {
              if(H5D_close(new_dset) < 0)
                  HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataset")
          } /* end if */
        } /* end if-else */
    } /* end if */

    FUNC_LEAVE_API(ret_value)
} /* end H5Dcreate() */


/*-------------------------------------------------------------------------
 * Function:	H5Dcreate_expand
 *
 * Purpose:	Creates a new dataset named NAME at LOC_ID, opens the
 *		dataset for access, and associates with that dataset constant
 *		and initial persistent properties including the type of each
 *		datapoint as stored in the file (TYPE_ID), the size of the
 *		dataset (SPACE_ID), and other initial miscellaneous
 *		properties (DCPL_ID).
 *
 *		All arguments are copied into the dataset, so the caller is
 *		allowed to derive new types, data spaces, and creation
 *		parameters from the old ones and reuse them in calls to
 *		create other datasets.
 *
 *              The resulting ID should be linked into the file with
 *              H5Llink or it will be deleted when closed.
 *
 * Return:	Success:	The object ID of the new dataset.  At this
 *				point, the dataset is ready to receive its
 *				raw data.  Attempting to read raw data from
 *				the dataset will probably return the fill
 *				value.	The dataset should be linked into
 *                              the group hierarchy before being closed or
 *                              it will be deleted.  The dataset should be
 *                              closed when the caller is no longer interested
 *                              in it.
 *
 *		Failure:	FAIL
 *
 * Programmer:	James Laird
 *		Tuesday, January 24, 2006
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Dcreate_expand(hid_t loc_id, hid_t type_id, hid_t space_id,
	  hid_t dcpl_id, hid_t dapl_id)
{
    H5G_loc_t	   loc;                 /* Object location to insert dataset into */
    H5D_t	   *new_dset = NULL;    /* New dataset's info */
    const H5S_t    *space;              /* Dataspace for dataset */
    hid_t           ret_value;          /* Return value */

    FUNC_ENTER_API(H5Dcreate_expand, FAIL)
    H5TRACE5("i","iiiii",loc_id,type_id,space_id,dcpl_id,dapl_id);

    /* Check arguments */
    if(H5G_loc(loc_id, &loc) < 0)
	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location ID")
    if(H5I_DATATYPE != H5I_get_type(type_id))
	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype ID")
    if(NULL == (space = H5I_object_verify(space_id,H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace ID")
    if(H5P_DEFAULT == dcpl_id)
        dcpl_id = H5P_DATASET_CREATE_DEFAULT;
    else
        if(TRUE != H5P_isa_class(dcpl_id, H5P_DATASET_CREATE))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not dataset create property list ID")

    /* Get correct property list */
    if(H5P_DEFAULT == dapl_id)
        dapl_id = H5P_DATASET_ACCESS_DEFAULT;
    else
        if(TRUE != H5P_isa_class(dapl_id, H5P_DATASET_ACCESS))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not dataset access property list")

    /* build and open the new dataset */
    if(NULL == (new_dset = H5D_create(loc.oloc->file, type_id, space, dcpl_id, H5AC_dxpl_id)))
	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to create dataset")

    /* Register the new dataset to get an ID for it */
    if((ret_value = H5I_register(H5I_DATASET, new_dset)) < 0)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTREGISTER, FAIL, "unable to register dataset")

done:
    if(ret_value < 0) {
        if(new_dset != NULL) {
            if(H5D_close(new_dset) < 0)
                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataset")
        } /* end if */
    } /* end if */

    FUNC_LEAVE_API(ret_value)
} /* end H5Dcreate() */


/*-------------------------------------------------------------------------
 * Function:	H5Dopen
 *
 * Purpose:	Finds a dataset named NAME at LOC_ID, opens it, and returns
 *		its ID.	 The dataset should be close when the caller is no
 *		longer interested in it.
 *
 * Return:	Success:	A new dataset ID
 *
 *		Failure:	FAIL
 *
 * Programmer:	Robb Matzke
 *		Thursday, December  4, 1997
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Dopen(hid_t loc_id, const char *name)
{
    H5D_t       *dset = NULL;
    H5G_loc_t	 loc;		        /* Object location of group */
    H5G_loc_t	 dset_loc;		/* Object location of dataset */
    H5G_name_t   path;            	/* Dataset group hier. path */
    H5O_loc_t    oloc;            	/* Dataset object location */
    H5O_type_t   obj_type;              /* Type of object at location */
    hbool_t      loc_found = FALSE;     /* Location at 'name' found */
    hid_t        dxpl_id = H5AC_dxpl_id;    /* dxpl to use to open datset */
    hid_t        ret_value;

    FUNC_ENTER_API(H5Dopen, FAIL)
    H5TRACE2("i","is",loc_id,name);

    /* Check args */
    if(H5G_loc(loc_id, &loc) < 0)
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
    if(!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")

    /* Set up dataset location to fill in */
    dset_loc.oloc = &oloc;
    dset_loc.path = &path;
    H5G_loc_reset(&dset_loc);

    /* Find the dataset object */
    if(H5G_loc_find(&loc, name, &dset_loc, H5P_DEFAULT, dxpl_id) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_NOTFOUND, FAIL, "not found")
    loc_found = TRUE;

    /* Check that the object found is the correct type */
    if(H5O_obj_type(&oloc, &obj_type, dxpl_id) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get object type")
    if(obj_type != H5O_TYPE_DATASET)
        HGOTO_ERROR(H5E_DATASET, H5E_BADTYPE, FAIL, "not a dataset")

    /* Open the dataset */
    if((dset = H5D_open(&dset_loc, dxpl_id)) == NULL)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't open dataset")

    /* Register an atom for the dataset */
    if((ret_value = H5I_register(H5I_DATASET, dset)) < 0)
        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "can't register dataset atom")

done:
    if(ret_value < 0) {
        if(dset != NULL) {
            if(H5D_close(dset) < 0)
                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataset")
        } /* end if */
        else {
            if(loc_found) {
                if(H5G_loc_free(&dset_loc) < 0)
                    HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "can't free location")
            }
        } /* end else */
    } /* end if */

    FUNC_LEAVE_API(ret_value)
} /* end H5Dopen() */


/*-------------------------------------------------------------------------
 * Function:	H5Dopen_expand
 *
 * Purpose:	Finds a dataset named NAME at LOC_ID, opens it, and returns
 *		its ID.	 The dataset should be close when the caller is no
 *		longer interested in it.
 *
 *              Takes a dataset access property list
 *
 * Return:	Success:	A new dataset ID
 *		Failure:	FAIL
 *
 * Programmer:	James Laird
 *		Thursday, July 27, 2006
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Dopen_expand(hid_t loc_id, const char *name, hid_t dapl_id)
{
    H5D_t       *dset = NULL;
    H5G_loc_t	 loc;		        /* Object location of group */
    H5G_loc_t	 dset_loc;		/* Object location of dataset */
    H5G_name_t   path;            	/* Dataset group hier. path */
    H5O_loc_t    oloc;            	/* Dataset object location */
    H5O_type_t   obj_type;              /* Type of object at location */
    hbool_t      loc_found = FALSE;     /* Location at 'name' found */
    hid_t        dxpl_id = H5AC_dxpl_id;    /* dxpl to use to open datset */
    hid_t        ret_value;

    FUNC_ENTER_API(H5Dopen_expand, FAIL)
    H5TRACE3("i","isi",loc_id,name,dapl_id);

    /* Check args */
    if(H5G_loc(loc_id, &loc) < 0)
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
    if(!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")

    /* Get correct property list */
    if(H5P_DEFAULT == dapl_id)
        dapl_id = H5P_DATASET_ACCESS_DEFAULT;
    else
        if(TRUE != H5P_isa_class(dapl_id, H5P_DATASET_ACCESS))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not dataset access property list")

    /* Set up dataset location to fill in */
    dset_loc.oloc = &oloc;
    dset_loc.path = &path;
    H5G_loc_reset(&dset_loc);

    /* Find the dataset object */
    if(H5G_loc_find(&loc, name, &dset_loc, dapl_id, dxpl_id) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_NOTFOUND, FAIL, "not found")
    loc_found = TRUE;

    /* Check that the object found is the correct type */
    if(H5O_obj_type(&oloc, &obj_type, dxpl_id) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get object type")
    if(obj_type != H5O_TYPE_DATASET)
        HGOTO_ERROR(H5E_DATASET, H5E_BADTYPE, FAIL, "not a dataset")

    /* Open the dataset */
    if((dset = H5D_open(&dset_loc, dxpl_id)) == NULL)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't open dataset")

    /* Register an atom for the dataset */
    if((ret_value = H5I_register(H5I_DATASET, dset)) < 0)
        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "can't register dataset atom")

done:
    if(ret_value < 0) {
        if(dset != NULL) {
            if(H5D_close(dset) < 0)
                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataset")
        } /* end if */
        else {
            if(loc_found) {
                if(H5G_loc_free(&dset_loc) < 0)
                    HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "can't free location")
            }
        } /* end else */
    } /* end if */

    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5Dclose
 *
 * Purpose:	Closes access to a dataset (DATASET_ID) and releases
 *		resources used by it. It is illegal to subsequently use that
 *		same dataset ID in calls to other dataset functions.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Robb Matzke
 *		Thursday, December  4, 1997
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Dclose(hid_t dset_id)
{
    H5D_t	*dset;	                /* Dataset object to release */
    herr_t       ret_value = SUCCEED;   /* Return value */

    FUNC_ENTER_API(H5Dclose, FAIL)
    H5TRACE1("e","i",dset_id);

    /* Check args */
    if(NULL == (dset = H5I_object_verify(dset_id, H5I_DATASET)))
	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")

    /*
     * Decrement the counter on the dataset.  It will be freed if the count
     * reaches zero.
     */
    if(H5I_dec_ref(dset_id) < 0)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't free")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Dclose() */


/*-------------------------------------------------------------------------
 * Function:	H5Dget_space
 *
 * Purpose:	Returns a copy of the file data space for a dataset.
 *
 * Return:	Success:	ID for a copy of the data space.  The data
 *				space should be released by calling
 *				H5Sclose().
 *
 *		Failure:	FAIL
 *
 * Programmer:	Robb Matzke
 *		Wednesday, January 28, 1998
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Dget_space(hid_t dset_id)
{
    H5D_t	*dset = NULL;
    H5S_t	*space = NULL;
    hid_t	ret_value;

    FUNC_ENTER_API(H5Dget_space, FAIL)
    H5TRACE1("i","i",dset_id);

    /* Check args */
    if (NULL==(dset=H5I_object_verify(dset_id, H5I_DATASET)))
	HGOTO_ERROR (H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")

    /* Read the data space message and return a data space object */
    if (NULL==(space=H5S_copy (dset->shared->space, FALSE)))
	HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL, "unable to get data space")

    /* Create an atom */
    if ((ret_value=H5I_register (H5I_DATASPACE, space))<0)
	HGOTO_ERROR (H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register data space")

done:
    if(ret_value<0) {
        if(space!=NULL) {
            if(H5S_close(space)<0)
                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
        } /* end if */
    } /* end if */

    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5Dget_space_status
 *
 * Purpose:	Returns the status of data space allocation.
 *
 * Return:
 *		Success:	Non-negative
 *
 *		Failture:	Negative
 *
 * Programmer:	Raymond Lu
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Dget_space_status(hid_t dset_id, H5D_space_status_t *allocation)
{
    H5D_t 	*dset = NULL;
    herr_t 	ret_value = SUCCEED;

    FUNC_ENTER_API(H5Dget_space_status, FAIL)
    H5TRACE2("e","i*Ds",dset_id,allocation);

    /* Check arguments */
    if(NULL==(dset=H5I_object_verify(dset_id, H5I_DATASET)))
	HGOTO_ERROR (H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")

    /* Read data space address and return */
    if(FAIL==(ret_value=H5D_get_space_status(dset, allocation, H5AC_ind_dxpl_id)))
        HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL, "unable to get space status")

done:
    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:    H5D_get_space_status
 *
 * Purpose:     Returns the status of data space allocation.
 *
 * Return:
 *              Success:        Non-negative
 *
 *              Failture:       Negative
 *
 * Programmer:  Raymond Lu
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5D_get_space_status(H5D_t *dset, H5D_space_status_t *allocation, hid_t dxpl_id)
{
    H5S_t      *space;              /* Dataset's dataspace */
    hsize_t     space_allocated;    /* The number of bytes allocated for chunks */
    hssize_t    total_elem;         /* The total number of elements in dataspace */
    size_t      type_size;          /* The size of the datatype for the dataset */
    hsize_t     full_size;          /* The number of bytes in the dataset when fully populated */
    herr_t      ret_value = SUCCEED;

    FUNC_ENTER_NOAPI_NOINIT(H5D_get_space_status)

    assert(dset);

    /* Get the dataset's dataspace */
    space=dset->shared->space;
    assert(space);

    /* Get the total number of elements in dataset's dataspace */
    if((total_elem=H5S_GET_EXTENT_NPOINTS(space))<0)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTCOUNT, FAIL, "unable to get # of dataspace elements")

    /* Get the size of the dataset's datatype */
    if((type_size=H5T_get_size(dset->shared->type))==0)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTCOUNT, FAIL, "unable to get size of datatype")

    /* Compute the maximum size of the dataset in bytes */
    H5_CHECK_OVERFLOW(total_elem,hssize_t,hsize_t);
    full_size=((hsize_t)total_elem)*type_size;

    /* Difficult to error check, since the error value is 0 and 0 is a valid value... :-/ */
    space_allocated=H5D_get_storage_size(dset,dxpl_id);

    /* Decide on how much of the space is allocated */
    if(space_allocated==0)
        *allocation = H5D_SPACE_STATUS_NOT_ALLOCATED;
    else if(space_allocated==full_size)
        *allocation = H5D_SPACE_STATUS_ALLOCATED;
    else {
        /* Should only happen for chunked datasets currently */
        assert(dset->shared->layout.type==H5D_CHUNKED);

        *allocation = H5D_SPACE_STATUS_PART_ALLOCATED;
    } /* end else */

done:
    FUNC_LEAVE_NOAPI(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5Dget_type
 *
 * Purpose:	Returns a copy of the file datatype for a dataset.
 *
 * Return:	Success:	ID for a copy of the datatype.	 The data
 *				type should be released by calling
 *				H5Tclose().
 *
 *		Failure:	FAIL
 *
 * Programmer:	Robb Matzke
 *		Tuesday, February  3, 1998
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Dget_type(hid_t dset_id)
{

    H5D_t	*dset = NULL;
    H5T_t	*copied_type = NULL;
    hid_t	ret_value = FAIL;

    FUNC_ENTER_API(H5Dget_type, FAIL)
    H5TRACE1("i","i",dset_id);

    /* Check args */
    if (NULL==(dset=H5I_object_verify(dset_id, H5I_DATASET)))
	HGOTO_ERROR (H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")

    /* Copy the datatype and mark it read-only */
    if (NULL==(copied_type=H5T_copy (dset->shared->type, H5T_COPY_REOPEN)))
	HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL, "unable to copy the datatype")

    /* Mark any datatypes as being in memory now */
    if (H5T_set_loc(copied_type, NULL, H5T_LOC_MEMORY)<0)
        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "invalid datatype location")

    /* Unlock copied type */
    if (H5T_lock (copied_type, FALSE)<0)
	HGOTO_ERROR (H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to lock transient datatype")

    /* Create an atom */
    if ((ret_value=H5I_register (H5I_DATATYPE, copied_type))<0)
	HGOTO_ERROR (H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register datatype")

done:
    if(ret_value<0) {
        if(copied_type!=NULL) {
            if(H5T_close (copied_type)<0)
                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
        } /* end if */
    } /* end if */

    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5Dget_create_plist
 *
 * Purpose:	Returns a copy of the dataset creation property list.
 *
 * Return:	Success:	ID for a copy of the dataset creation
 *				property list.  The template should be
 *				released by calling H5P_close().
 *
 *		Failure:	FAIL
 *
 * Programmer:	Robb Matzke
 *		Tuesday, February  3, 1998
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Dget_create_plist(hid_t dset_id)
{
    H5D_t		*dset = NULL;
    H5O_fill_t          copied_fill={NULL,0,NULL};
    H5P_genplist_t      *dcpl_plist;
    H5P_genplist_t      *new_plist;
    hid_t		new_dcpl_id = FAIL;
    hid_t		ret_value = FAIL;

    FUNC_ENTER_API(H5Dget_create_plist, FAIL)
    H5TRACE1("i","i",dset_id);

    /* Check args */
    if (NULL==(dset=H5I_object_verify(dset_id, H5I_DATASET)))
	HGOTO_ERROR (H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
    if (NULL == (dcpl_plist = H5I_object(dset->shared->dcpl_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")

    /* Copy the creation property list */
    if((new_dcpl_id = H5P_copy_plist(dcpl_plist)) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to copy the creation property list")
    if (NULL == (new_plist = H5I_object(new_dcpl_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")

    /* Retrieve any object creation properties */
    if(H5O_get_create_plist(&dset->oloc, H5AC_ind_dxpl_id, new_plist) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "can't get object creation info")

    /* Get the fill value property */
    if(H5P_get(new_plist, H5D_CRT_FILL_VALUE_NAME, &copied_fill) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get fill value")

    /* Copy the dataset type into the fill value message */
    if(copied_fill.type==NULL)
        if(NULL==(copied_fill.type=H5T_copy(dset->shared->type, H5T_COPY_TRANSIENT)))
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to copy dataset datatype for fill value")

    /* Set back the fill value property to property list */
    if(H5P_set(new_plist, H5D_CRT_FILL_VALUE_NAME, &copied_fill) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "unable to set property list fill value")

    /* Set the return value */
    ret_value=new_dcpl_id;

done:
    if(ret_value<0) {
        if(new_dcpl_id>0)
            (void)H5I_dec_ref(new_dcpl_id);
    } /* end if */

    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5Dextend
 *
 * Purpose:	This function makes sure that the dataset is at least of size
 *		SIZE. The dimensionality of SIZE is the same as the data
 *		space of the dataset being changed.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Robb Matzke
 *		Friday, January 30, 1998
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Dextend(hid_t dset_id, const hsize_t *size)
{
    H5D_t	*dset = NULL;
    herr_t       ret_value=SUCCEED;  /* Return value */

    FUNC_ENTER_API(H5Dextend, FAIL)
    H5TRACE2("e","i*h",dset_id,size);

    /* Check args */
    if (NULL==(dset=H5I_object_verify(dset_id, H5I_DATASET)))
	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
    if (!size)
	HGOTO_ERROR (H5E_ARGS, H5E_BADVALUE, FAIL, "no size specified")

    /* Increase size */
    if (H5D_extend (dset, size, H5AC_dxpl_id)<0)
	HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL, "unable to extend dataset")

done:
    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5D_new
 *
 * Purpose:	Creates a new, empty dataset structure
 *
 * Return:	Success:	Pointer to a new dataset descriptor.
 *
 *		Failure:	NULL
 *
 * Programmer:	Quincey Koziol
 *		Monday, October 12, 1998
 *
 *-------------------------------------------------------------------------
 */
static H5D_shared_t *
H5D_new(hid_t dcpl_id, hbool_t creating, hbool_t vl_type)
{
    H5P_genplist_t  *plist;             /* Property list created */
    H5D_shared_t    *new_dset = NULL;   /* New dataset object */
    H5D_shared_t    *ret_value;         /* Return value */

    FUNC_ENTER_NOAPI_NOINIT(H5D_new)

    /* Allocate new shared dataset structure */
    if(NULL == (new_dset = H5FL_MALLOC(H5D_shared_t)))
        HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")

    /* If we are using the default dataset creation property list, during creation
     * don't bother to copy it, just increment the reference count
     */
    if(!vl_type && creating && dcpl_id == H5P_DATASET_CREATE_DEFAULT) {
        /* Copy the default dataset information */
        HDmemcpy(new_dset, &H5D_def_dset, sizeof(H5D_shared_t));

        if(H5I_inc_ref(dcpl_id) < 0)
            HGOTO_ERROR (H5E_DATASET, H5E_CANTINC, NULL, "Can't increment default DCPL ID")
        new_dset->dcpl_id = dcpl_id;
    } /* end if */
    else {
        /* Reset the dataset information */
        HDmemset(new_dset, 0, sizeof(H5D_shared_t));

        /* Get the property list */
        if(NULL == (plist = H5I_object(dcpl_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a property list")

        new_dset->dcpl_id = H5P_copy_plist(plist);
    } /* end else */

    /* Set return value */
    ret_value = new_dset;

done:
    if(ret_value == NULL)
        if(new_dset != NULL) {
            if(new_dset->dcpl_id != 0)
                (void)H5I_dec_ref(new_dset->dcpl_id);
            H5FL_FREE(H5D_shared_t, new_dset);
        } /* end if */

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_new() */


/*-------------------------------------------------------------------------
 * Function:	H5D_init_type
 *
 * Purpose:	Copy a datatype for a dataset's use, performing all the
 *              necessary adjustments, etc.
 *
 * Return:	Success:    SUCCEED
 *		Failure:    FAIL
 *
 * Programmer:	Quincey Koziol
 *		Thursday, June 24, 2004
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5D_init_type(H5F_t *file, const H5D_t *dset, hid_t type_id, const H5T_t *type)
{
    htri_t relocatable;                 /* Flag whether the type is relocatable */
    htri_t immutable;                   /* Flag whether the type is immutable */
    herr_t ret_value = SUCCEED;         /* Return value */

    FUNC_ENTER_NOAPI(H5D_init_type, FAIL)

    /* Sanity checking */
    assert(file);
    assert(dset);
    assert(type);

    /* Check whether the datatype is relocatable */
    if((relocatable=H5T_is_relocatable(type))<0)
        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "can't check datatype?")

    /* Check whether the datatype is immutable */
    if((immutable=H5T_is_immutable(type))<0)
        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "can't check datatype?")

    /* Copy the datatype if it's a custom datatype or if it'll change when it's location is changed */
    if(!immutable || relocatable) {
        /* Copy datatype for dataset */
        if((dset->shared->type = H5T_copy(type, H5T_COPY_ALL))==NULL)
            HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "can't copy datatype")

        /* Mark any datatypes as being on disk now */
        if(H5T_set_loc(dset->shared->type, file, H5T_LOC_DISK)<0)
            HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "invalid datatype location")

        /* Get a datatype ID for the dataset's datatype */
	if((dset->shared->type_id = H5I_register(H5I_DATATYPE, dset->shared->type))<0)
	    HGOTO_ERROR(H5E_DATASET, H5E_CANTREGISTER, FAIL, "unable to register type")
    } /* end if */
    /* Not a custom datatype, just use it directly */
    else {
        if(H5I_inc_ref(type_id)<0)
            HGOTO_ERROR (H5E_DATASET, H5E_CANTINC, FAIL, "Can't increment datatype ID")

        /* Use existing datatype */
        dset->shared->type_id = type_id;
        dset->shared->type = (H5T_t *)type; /* (Cast away const OK - QAK) */
    } /* end else */

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_init_type() */


/*-------------------------------------------------------------------------
 * Function:	H5D_update_entry_info
 *
 * Purpose:	Create and fill an H5G_entry_t object for insertion into
 *              the group LOC.
 *
 *              This code was originally found at the end of H5D_create()
 *              but was placed here for general use.
 *
 * Return:	Success:    SUCCEED
 *		Failure:    FAIL
 *
 * Programmer:	Bill Wendling
 *		Thursday, October 31, 2002
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5D_update_entry_info(H5F_t *file, hid_t dxpl_id, H5D_t *dset)
{
    size_t              ohdr_size = H5D_MINHDR_SIZE;    /* Size of dataset's object header */
    H5O_loc_t          *oloc = NULL;    /* Dataset's object location */
    H5O_layout_t       *layout;         /* Dataset's layout information */
    H5T_t              *type;           /* Dataset's datatype */
    H5D_alloc_time_t alloc_time;        /* Dataset's allocation time */
    H5O_efl_t          *efl;            /* Dataset's external file list */
    H5P_genplist_t     *dc_plist = NULL;        /* Dataset's creation property list */
    hbool_t             use_latest_format;      /* Flag indicating the newest file format should be used */

    /* fill value variables */
    H5D_fill_time_t	fill_time;
    H5O_fill_t		*fill_prop;     /* Pointer to dataset's fill value information */
    H5O_fill_new_t      fill;
    H5D_fill_value_t	fill_status;

    struct H5O_t       *oh = NULL;      /* Pointer to dataset's object header */
    unsigned		oh_flags = H5AC__DIRTIED_FLAG;
    herr_t ret_value = SUCCEED;         /* Return value */

    FUNC_ENTER_NOAPI(H5D_update_entry_info, FAIL)

    /* Sanity checking */
    HDassert(file);
    HDassert(dset);

    /* Set some location variables, for convenience */
    oloc = &dset->oloc;
    layout = &dset->shared->layout;
    type = dset->shared->type;
    alloc_time = dset->shared->alloc_time;
    efl = &dset->shared->efl;

    /* Get the file's 'use the latest version of the format' flag */
    use_latest_format = H5F_USE_LATEST_FORMAT(file);

    /* Initialize the fill value message */
    HDmemset(&fill,0,sizeof(H5O_fill_new_t));
    fill.alloc_time = H5D_ALLOC_TIME_LATE;
    fill.fill_time = H5D_FILL_TIME_ALLOC;
    fill.fill_defined = TRUE;

    /* Point at dataset's copy, to cache it for later */
    fill_prop = &dset->shared->fill;
    fill_time = dset->shared->fill_time;

    /* Check if dataset has non-default creation property list */
    if(dset->shared->dcpl_id != H5P_DATASET_CREATE_DEFAULT) {
        /* Get new dataset's property list object */
        if (NULL == (dc_plist = H5I_object(dset->shared->dcpl_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get dataset creation property list")

        /*
         * Retrieve properties of fill value and others. Copy them into new fill
         * value struct.
         */
        if(H5P_get(dc_plist, H5D_CRT_FILL_TIME_NAME, &fill_time) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve fill time")
        dset->shared->fill_time=fill_time;    /* Cache this for later */

        /* Get the fill value information from the property list */
        if(H5P_get(dc_plist, H5D_CRT_FILL_VALUE_NAME, fill_prop) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve fill value")
    } /* end if */

    if(H5P_is_fill_value_defined(fill_prop, &fill_status) < 0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't tell if fill value defined")

    /* Special case handling for variable-length types */
    if(H5T_detect_class(type, H5T_VLEN)) {
        /* If the default fill value is chosen for variable-length types, always write it */
        if(fill_time == H5D_FILL_TIME_IFSET && fill_status == H5D_FILL_VALUE_DEFAULT) {
            dset->shared->fill_time = fill_time = H5D_FILL_TIME_ALLOC;

            /* Update dataset creation property */
            HDassert(dset->shared->dcpl_id != H5P_DATASET_CREATE_DEFAULT);
            if(H5P_set(dc_plist, H5D_CRT_FILL_TIME_NAME, &fill_time) < 0)
                HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set fill time")
        } /* end if */

        /* Don't allow never writing fill values with variable-length types */
        if(fill_time == H5D_FILL_TIME_NEVER)
            HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "Dataset doesn't support VL datatype when fill value is not defined")
    } /* end if */

    if(fill_status == H5D_FILL_VALUE_DEFAULT || fill_status == H5D_FILL_VALUE_USER_DEFINED) {
        if(H5O_copy(H5O_FILL_ID, fill_prop, &fill) == NULL)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT,FAIL, "unable to copy fill value")

        if(fill_prop->buf && fill_prop->size > 0 && H5O_fill_convert(&fill, type, dxpl_id) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to convert fill value to dataset type")

	fill.fill_defined = TRUE;
    } else if (fill_status == H5D_FILL_VALUE_UNDEFINED) {
	fill.size = -1;
 	fill.type = fill.buf = NULL;
 	fill.fill_defined = FALSE;
    } else
        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to determine if fill value is defined")

    fill.alloc_time = alloc_time;
    fill.fill_time = fill_time;

    /* Check for invalid fill & allocation time setting */
    if(fill.fill_defined == FALSE && fill_time == H5D_FILL_TIME_ALLOC)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT,FAIL, "unable to create dataset")

    /* Add the dataset's raw data size to the size of the header, if the raw data will be stored as compact */
    if(layout->type == H5D_COMPACT)
        ohdr_size += layout->u.compact.size;

    /* Create an object header for the dataset */
    if(H5O_create(file, dxpl_id, ohdr_size, dset->shared->dcpl_id, oloc/*out*/) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to create dataset object header")

    /* Get a pointer to the object header itself */
    if((oh = H5O_protect(oloc, dxpl_id)) == NULL)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to protect dataset object header")

    /* Write new fill value message */
    if(H5O_append(file, dxpl_id, oh, H5O_FILL_NEW_ID, H5O_MSG_FLAG_CONSTANT, &fill, &oh_flags) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update fill value header message")

    /* If there is valid information for the old fill value struct, update it */
    /* (only if we aren't trying to write the latest version of the file format) */
    if(fill.buf && !use_latest_format) {
        /* Clear any previous values */
        if(H5O_reset(H5O_FILL_ID, fill_prop)<0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "can't release fill info")

        /* Copy new fill value information to old fill value struct */
        if(H5O_copy(H5O_FILL_ID, &fill, fill_prop) == NULL)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT,FAIL,"unable to copy fill value")

        /* Write old fill value */
        if(fill_prop->buf && H5O_append(file, dxpl_id, oh, H5O_FILL_ID, H5O_MSG_FLAG_CONSTANT, fill_prop, &oh_flags) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update fill value header message")

        /* Update dataset creation property */
        HDassert(dset->shared->dcpl_id!=H5P_DATASET_CREATE_DEFAULT);
        if(H5P_set(dc_plist, H5D_CRT_FILL_VALUE_NAME, fill_prop) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set fill value")
    } /* end if */

    /* Update the type and space header messages */
    if(H5O_append(file, dxpl_id, oh, H5O_DTYPE_ID, H5O_MSG_FLAG_CONSTANT | H5O_MSG_FLAG_SHARED, type, &oh_flags) < 0 ||
            H5S_append(file, dxpl_id, oh, dset->shared->space, &oh_flags) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update type or space header messages")

    /* Update the filters message, if this is a chunked dataset */
    if(layout->type == H5D_CHUNKED) {
        H5O_pline_t         pline;      /* Chunked data I/O pipeline info */

        if(H5P_get(dc_plist, H5D_CRT_DATA_PIPELINE_NAME, &pline) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "Can't retrieve pipeline filter")

        if(pline.nused > 0 && H5O_append(file, dxpl_id, oh, H5O_PLINE_ID, H5O_MSG_FLAG_CONSTANT, &pline, &oh_flags) < 0)
            HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update filter header message")
    } /* end if */

    /*
     * Allocate storage if space allocate time is early; otherwise delay
     * allocation until later.
     */
    if (alloc_time == H5D_ALLOC_TIME_EARLY)
        if (H5D_alloc_storage(file, dxpl_id, dset, H5D_ALLOC_CREATE, FALSE, FALSE) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize storage")

    /* Update external storage message */
    if (efl->nused > 0) {
        size_t heap_size = H5HL_ALIGN(1);
        size_t u;

        for (u = 0; u < efl->nused; ++u)
            heap_size += H5HL_ALIGN(HDstrlen(efl->slot[u].name) + 1);

        if (H5HL_create(file, dxpl_id, heap_size, &efl->heap_addr/*out*/) < 0 ||
                H5HL_insert(file, dxpl_id, efl->heap_addr, (size_t)1, "") == (size_t)(-1))
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to create external file list name heap")

        for (u = 0; u < efl->nused; ++u) {
            size_t offset = H5HL_insert(file, dxpl_id, efl->heap_addr,
                        HDstrlen(efl->slot[u].name) + 1, efl->slot[u].name);

            assert(0 == efl->slot[u].name_offset);

            if (offset == (size_t)(-1))
                HGOTO_ERROR(H5E_EFL, H5E_CANTINIT, FAIL, "unable to insert URL into name heap")

            efl->slot[u].name_offset = offset;
        }

        if (H5O_append(file, dxpl_id, oh, H5O_EFL_ID, H5O_MSG_FLAG_CONSTANT, efl, &oh_flags) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update external file list message")
    }

    /* Update layout message */
    /* (Don't make layout message constant unless allocation time is early, since space may not be allocated) */
    /* Note: this is relying on H5D_alloc_storage not calling H5O_modify during dataset creation */
    if (H5D_COMPACT != layout->type && H5O_append(file, dxpl_id, oh, H5O_LAYOUT_ID, (alloc_time == H5D_ALLOC_TIME_EARLY ? H5O_MSG_FLAG_CONSTANT : 0), layout, &oh_flags) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update layout")

#ifdef H5O_ENABLE_BOGUS
    /*
     * Add a "bogus" message (for error testing).
     */
    if(H5O_bogus_oh(file, dxpl_id, oh)) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, NULL, "unable to update 'bogus' message")
#endif /* H5O_ENABLE_BOGUS */

    /* Add a modification time message. */
    if (H5O_touch_oh(file, dxpl_id, oh, TRUE, &oh_flags) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update modification time message")

done:
    /* Release fill value information */
    if(H5O_reset(H5O_FILL_ID, &fill) < 0)
        HDONE_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "unable to release fill-value info")

    /* Release pointer to object header itself */
    if(oloc != NULL && oh != NULL)
        if(H5O_unprotect(oloc, oh, dxpl_id, oh_flags) < 0)
            HDONE_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to unprotect dataset object header")

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_update_entry_info() */


/*-------------------------------------------------------------------------
 * Function:	H5D_create
 *
 * Purpose:	Creates a new dataset with name NAME in file F and associates
 *		with it a datatype TYPE for each element as stored in the
 *		file, dimensionality information or dataspace SPACE, and
 *		other miscellaneous properties CREATE_PARMS.  All arguments
 *		are deep-copied before being associated with the new dataset,
 *		so the caller is free to subsequently modify them without
 *		affecting the dataset.
 *
 * Return:	Success:	Pointer to a new dataset
 *
 *		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *		Thursday, December  4, 1997
 *
 *-------------------------------------------------------------------------
 */
static H5D_t *
H5D_create(H5F_t *file, hid_t type_id, const H5S_t *space,
    hid_t dcpl_id, hid_t dxpl_id)
{
    const H5T_t         *type;                  /* Datatype for dataset */
    H5D_t		*new_dset = NULL;
    int		        i, ndims;
    unsigned		u;
    unsigned            chunk_ndims = 0;        /* Dimensionality of chunk */
    H5P_genplist_t 	*dc_plist=NULL;         /* New Property list */
    hbool_t             has_vl_type=FALSE;      /* Flag to indicate a VL-type for dataset */
    hbool_t             chunk_init=FALSE;       /* Flag to indicate that chunk information was initialized */
    H5G_loc_t           dset_loc;               /* Dataset location */
    H5D_t		*ret_value;             /* Return value */

    FUNC_ENTER_NOAPI(H5D_create, NULL)

    /* check args */
    HDassert(file);
    HDassert(H5I_DATATYPE==H5I_get_type(type_id));
    HDassert(space);
    HDassert(H5I_GENPROP_LST==H5I_get_type(dcpl_id));
    HDassert(H5I_GENPROP_LST==H5I_get_type(dxpl_id));

    /* Get the dataset's datatype */
    if (NULL == (type = H5I_object(type_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a datatype")

    /* Check if the datatype is "sensible" for use in a dataset */
    if(H5T_is_sensible(type)!=TRUE)
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "datatype is not sensible")

    /* Check if the datatype is/contains a VL-type */
    if(H5T_detect_class(type, H5T_VLEN))
        has_vl_type=TRUE;

    /* Check if the dataspace has an extent set (or is NULL) */
    if( !(H5S_has_extent(space)) )
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, NULL, "dataspace extent has not been set.")

    /* Initialize the dataset object */
    if (NULL==(new_dset = H5FL_CALLOC(H5D_t)))
        HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")

    /* Set up & reset dataset location */
    dset_loc.oloc = &(new_dset->oloc);
    dset_loc.path = &(new_dset->path);
    H5G_loc_reset(&dset_loc);

    /* Initialize the shared dataset space */
    if(NULL == (new_dset->shared = H5D_new(dcpl_id,TRUE,has_vl_type)))
        HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")

    /* Copy datatype for dataset */
    if(H5D_init_type(file, new_dset, type_id, type)<0)
        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy datatype")

    /* Check if the filters in the DCPL can be applied to this dataset */
    if(H5Z_can_apply(new_dset->shared->dcpl_id,new_dset->shared->type_id)<0)
        HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, NULL, "I/O filters can't operate on this dataset")

    /* Set the dataset's checked_filters flag to enable writing */
    new_dset->shared->checked_filters = TRUE;

    /* Copy dataspace for dataset */
    if((new_dset->shared->space = H5S_copy(space, FALSE))==NULL)
        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, NULL, "can't copy dataspace")

    /* Set the dataset's dataspace to 'all' selection */
    if(H5S_select_all(new_dset->shared->space,1)<0)
        HGOTO_ERROR (H5E_DATASPACE, H5E_CANTSET, NULL, "unable to set all selection")

    /* Make the "set local" filter callbacks for this dataset */
    if(H5Z_set_local(new_dset->shared->dcpl_id,new_dset->shared->type_id)<0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, NULL, "unable to set local filter parameters")

    /* Check if the dataset has a non-default DCPL & get important values, if so */
    if(new_dset->shared->dcpl_id!=H5P_DATASET_CREATE_DEFAULT) {
        H5D_layout_t    dcpl_layout;    /* Dataset's layout information */
        H5O_pline_t     dcpl_pline;     /* Dataset's I/O pipeline information */
        H5D_alloc_time_t alloc_time;    /* Dataset's allocation time */

        /* Get new dataset's property list object */
        if (NULL == (dc_plist = H5I_object(new_dset->shared->dcpl_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "can't get dataset creation property list")

        if(H5P_get(dc_plist, H5D_CRT_DATA_PIPELINE_NAME, &dcpl_pline) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't retrieve pipeline filter")
        if(H5P_get(dc_plist, H5D_CRT_LAYOUT_NAME, &dcpl_layout) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't retrieve layout")
        if(dcpl_pline.nused > 0 && H5D_CHUNKED != dcpl_layout)
            HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, NULL, "filters can only be used with chunked layout")
        if(H5P_get(dc_plist, H5D_CRT_ALLOC_TIME_NAME, &alloc_time) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't retrieve space allocation time")

        /* Check if the alloc_time is the default and error out */
        if(alloc_time==H5D_ALLOC_TIME_DEFAULT)
            HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, NULL, "invalid space allocation state")

        /* Don't allow compact datasets to allocate space later */
        if(dcpl_layout==H5D_COMPACT && alloc_time!=H5D_ALLOC_TIME_EARLY)
            HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, NULL, "compact dataset doesn't support late space allocation")

        /* Set the alloc_time for the dataset, in case the default was used */
        new_dset->shared->alloc_time=alloc_time;

        /* If MPI VFD is used, no filter support yet. */
        if(IS_H5FD_MPI(file) && dcpl_pline.nused > 0)
            HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, NULL, "Parallel I/O does not support filters yet")

        /* Chunked datasets are non-default, so retrieve their info here */
        if(H5P_get(dc_plist, H5D_CRT_CHUNK_DIM_NAME, &chunk_ndims) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't retrieve chunk dimensions")

        /* Get the dataset's external file list information */
        if(H5P_get(dc_plist, H5D_CRT_EXT_FILE_LIST_NAME, &new_dset->shared->efl) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't retrieve external file list")

        /* Set the dataset's data storage method */
        new_dset->shared->layout.type=dcpl_layout;
    } /* end if */

    /* Check if this dataset is going into a parallel file and set space allocation time */
    if(IS_H5FD_MPI(file))
        new_dset->shared->alloc_time=H5D_ALLOC_TIME_EARLY;

    switch (new_dset->shared->layout.type) {
        case H5D_CONTIGUOUS:
            {
                hssize_t tmp_size;                      /* Temporary holder for raw data size */
                hsize_t	dim[H5O_LAYOUT_NDIMS];	        /* Current size of data in elements */
                hsize_t	max_dim[H5O_LAYOUT_NDIMS];      /* Maximum size of data in elements */

                /*
                 * The maximum size of the dataset cannot exceed the storage size.
                 * Also, only the slowest varying dimension of a simple data space
                 * can be extendible (currently only for external data storage).
                 */
                new_dset->shared->layout.u.contig.addr = HADDR_UNDEF;        /* Initialize to no address */

                if ((ndims=H5S_get_simple_extent_dims(new_dset->shared->space, dim, max_dim))<0)
                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, NULL, "unable to initialize contiguous storage")
                for (i=1; i<ndims; i++)
                    if (max_dim[i]>dim[i])
                        HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, NULL, "only the first dimension can be extendible")
                if (new_dset->shared->efl.nused>0) {
                    hsize_t max_points = H5S_get_npoints_max (new_dset->shared->space);
                    hsize_t max_storage = H5O_efl_total_size (&new_dset->shared->efl);

                    if (H5S_UNLIMITED==max_points) {
                        if (H5O_EFL_UNLIMITED!=max_storage)
                            HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, NULL, "unlimited data space but finite storage")
                    } else if (max_points * H5T_get_size (type) < max_points) {
                        HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, NULL, "data space * type size overflowed")
                    } else if (max_points * H5T_get_size (type) > max_storage) {
                        HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, NULL, "data space size exceeds external storage size")
                    }

                    /* Set the I/O functions for this layout type */
                    new_dset->shared->io_ops.readvv=H5D_efl_readvv;
                    new_dset->shared->io_ops.writevv=H5D_efl_writevv;
                } /* end if */
                else {
                    if (ndims>0 && max_dim[0]>dim[0])
                        HGOTO_ERROR (H5E_DATASET, H5E_UNSUPPORTED, NULL, "extendible contiguous non-external dataset")

                    /* Set the I/O functions for this layout type */
                    new_dset->shared->io_ops.readvv=H5D_contig_readvv;
                    new_dset->shared->io_ops.writevv=H5D_contig_writevv;
                } /* end else */

                /* Compute the total size of a chunk */
                tmp_size = H5S_GET_EXTENT_NPOINTS(new_dset->shared->space) *
                                        H5T_get_size(new_dset->shared->type);
                H5_ASSIGN_OVERFLOW(new_dset->shared->layout.u.contig.size,tmp_size,hssize_t,hsize_t);

                /* Get the sieve buffer size for this dataset */
                new_dset->shared->cache.contig.sieve_buf_size = H5F_SIEVE_BUF_SIZE(file);
            } /* end case */
            break;

        case H5D_CHUNKED:
            {
                hsize_t	max_dim[H5O_LAYOUT_NDIMS];      /* Maximum size of data in elements */

                /* Set up layout information */
                if((ndims=H5S_GET_EXTENT_NDIMS(new_dset->shared->space))<0)
                    HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, NULL, "unable to get rank")
                new_dset->shared->layout.u.chunk.ndims = (unsigned)ndims + 1;
                assert((unsigned)(new_dset->shared->layout.u.chunk.ndims) <= NELMTS(new_dset->shared->layout.u.chunk.dim));

                new_dset->shared->layout.u.chunk.addr = HADDR_UNDEF;        /* Initialize to no address */

                /*
                 * Chunked storage allows any type of data space extension, so we
                 * don't even bother checking.
                 */
                if(chunk_ndims != (unsigned)ndims)
                    HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, NULL, "dimensionality of chunks doesn't match the data space")
                if (new_dset->shared->efl.nused>0)
                    HGOTO_ERROR (H5E_DATASET, H5E_BADVALUE, NULL, "external storage not supported with chunked layout")

                /*
                 * The chunk size of a dimension with a fixed size cannot exceed
                 * the maximum dimension size
                 */
                if(H5P_get(dc_plist, H5D_CRT_CHUNK_SIZE_NAME, new_dset->shared->layout.u.chunk.dim) < 0)
                    HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't retrieve chunk size")
                new_dset->shared->layout.u.chunk.dim[new_dset->shared->layout.u.chunk.ndims-1] = H5T_get_size(new_dset->shared->type);

                if (H5S_get_simple_extent_dims(new_dset->shared->space, NULL, max_dim)<0)
                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, NULL, "unable to query maximum dimensions")
                for (u=0; u<new_dset->shared->layout.u.chunk.ndims-1; u++)
                    if(max_dim[u] != H5S_UNLIMITED && max_dim[u] < new_dset->shared->layout.u.chunk.dim[u])
                        HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, NULL, "chunk size must be <= maximum dimension size for fixed-sized dimensions")

                /* Compute the total size of a chunk */
                for (u=1, new_dset->shared->layout.u.chunk.size=new_dset->shared->layout.u.chunk.dim[0]; u<new_dset->shared->layout.u.chunk.ndims; u++)
                    new_dset->shared->layout.u.chunk.size *= new_dset->shared->layout.u.chunk.dim[u];

                /* Set the I/O functions for this layout type */
                new_dset->shared->io_ops.readvv=H5D_istore_readvv;
                new_dset->shared->io_ops.writevv=H5D_istore_writevv;

                /* Initialize the chunk cache for the dataset */
                if(H5D_istore_init(file,new_dset)<0)
                    HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, NULL, "can't initialize chunk cache")

                /* Indicate that the chunk information was initialized */
                chunk_init=TRUE;
            } /* end case */
            break;

        case H5D_COMPACT:
            {
                hssize_t tmp_size;      /* Temporary holder for raw data size */
                hsize_t	comp_data_size;

                /*
                 * Compact dataset is stored in dataset object header message of
                 * layout.
                 */
                tmp_size = H5S_GET_EXTENT_NPOINTS(space) *
                                        H5T_get_size(new_dset->shared->type);
                H5_ASSIGN_OVERFLOW(new_dset->shared->layout.u.compact.size,tmp_size,hssize_t,size_t);

                /* Verify data size is smaller than maximum header message size
                 * (64KB) minus other layout message fields.
                 */
                comp_data_size=H5O_MESG_MAX_SIZE-H5O_layout_meta_size(file, &(new_dset->shared->layout));
                if(new_dset->shared->layout.u.compact.size > comp_data_size)
                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, NULL, "compact dataset size is bigger than header message maximum size")

                /* Set the I/O functions for this layout type */
                new_dset->shared->io_ops.readvv=H5D_compact_readvv;
                new_dset->shared->io_ops.writevv=H5D_compact_writevv;
            } /* end case */
            break;

        default:
            HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, NULL, "not implemented yet")
    } /* end switch */ /*lint !e788 All appropriate cases are covered */

    /* Update the dataset's entry info. */
    if(H5D_update_entry_info(file, dxpl_id, new_dset) != SUCCEED)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, NULL, "can't update the metadata cache")

    /* Get the dataset's DCPL cache info */
    if (H5D_get_dcpl_cache(new_dset->shared->dcpl_id,&new_dset->shared->dcpl_cache)<0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, NULL, "can't fill DCPL cache")

    /* Add the dataset to the list of opened objects in the file */
    if(H5FO_top_incr(new_dset->oloc.file, new_dset->oloc.addr) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINC, NULL, "can't incr object ref. count")
    if(H5FO_insert(new_dset->oloc.file, new_dset->oloc.addr, new_dset->shared, TRUE) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINSERT, NULL, "can't insert dataset into list of open objects")    

    new_dset->shared->fo_count = 1;

    /* Success */
    ret_value = new_dset;

done:
    if(!ret_value && new_dset && new_dset->shared) {
        if(new_dset->shared) {
            if(new_dset->shared->layout.type == H5D_CHUNKED && chunk_init) {
                if(H5D_istore_dest(new_dset,H5AC_dxpl_id) < 0)
                    HDONE_ERROR(H5E_DATASET, H5E_CANTRELEASE, NULL, "unable to destroy chunk cache")
            } /* end if */
            if(new_dset->shared->space) {
                if(H5S_close(new_dset->shared->space) < 0)
                    HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, NULL, "unable to release dataspace")
            } /* end if */
            if(new_dset->shared->type) {
                if(H5I_dec_ref(new_dset->shared->type_id) < 0)
                    HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, NULL, "unable to release datatype")
            } /* end if */
            if(H5F_addr_defined(new_dset->oloc.addr)) {
                if(H5O_close(&(new_dset->oloc)) < 0)
                    HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, NULL, "unable to release object header")
                if(file) {
                    if(H5O_delete(file, dxpl_id, new_dset->oloc.addr) < 0)
                        HDONE_ERROR(H5E_DATASET, H5E_CANTDELETE, NULL, "unable to delete object header")
                } /* end if */
            } /* end if */
            if(new_dset->shared->dcpl_id != 0) {
                if(H5I_dec_ref(new_dset->shared->dcpl_id) < 0)
                    HDONE_ERROR(H5E_DATASET, H5E_CANTDEC, NULL, "unable to decrement ref count on property list")
            } /* end if */
            H5FL_FREE(H5D_shared_t, new_dset->shared);
        } /* end if */
        new_dset->oloc.file = NULL;
        H5FL_FREE(H5D_t, new_dset);
    } /* end if */

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_create() */


/*
 *-------------------------------------------------------------------------
 * Function:	H5D_open
 *
 * Purpose:	Checks if dataset is already open, or opens a dataset for
 *              access.
 *
 * Return:	Success:	Dataset ID
 *		Failure:	FAIL
 *
 * Programmer:	Quincey Koziol
 *		Friday, December 20, 2002
 *
 *-------------------------------------------------------------------------
 */
H5D_t *
H5D_open(const H5G_loc_t *loc, hid_t dxpl_id)
{
    H5D_shared_t    *shared_fo = NULL;
    H5D_t           *dataset = NULL;
    H5D_t           *ret_value;              /* Return value */

    FUNC_ENTER_NOAPI(H5D_open, NULL)

    /* check args */
    HDassert(loc);

    /* Allocate the dataset structure */
    if(NULL == (dataset = H5FL_CALLOC(H5D_t)))
        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")

    /* Shallow copy (take ownership) of the object location object */
    if(H5O_loc_copy(&(dataset->oloc), loc->oloc, H5_COPY_SHALLOW) < 0)
        HGOTO_ERROR (H5E_DATASET, H5E_CANTCOPY, NULL, "can't copy object location")

    /* Shallow copy (take ownership) of the group hier. path */
    if(H5G_name_copy(&(dataset->path), loc->path, H5_COPY_SHALLOW) < 0)
        HGOTO_ERROR (H5E_DATASET, H5E_CANTCOPY, NULL, "can't copy path")

    /* Check if dataset was already open */
    if((shared_fo = H5FO_opened(dataset->oloc.file, dataset->oloc.addr)) == NULL) {
        /* Clear any errors from H5FO_opened() */
        H5E_clear_stack(NULL);

        /* Open the dataset object */
        if(H5D_open_oid(dataset, dxpl_id) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_NOTFOUND, NULL, "not found")

        /* Add the dataset to the list of opened objects in the file */
        if(H5FO_insert(dataset->oloc.file, dataset->oloc.addr, dataset->shared, FALSE) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINSERT, NULL, "can't insert dataset into list of open objects")

        /* Increment object count for the object in the top file */
        if(H5FO_top_incr(dataset->oloc.file, dataset->oloc.addr) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINC, NULL, "can't increment object count")

        /* We're the first dataset to use the the shared info */
        dataset->shared->fo_count = 1;
    } /* end if */
    else {
        /* Point to shared info */
        dataset->shared = shared_fo;

        /* Increment # of datasets using shared information */
        shared_fo->fo_count++;

        /* Check if the object has been opened through the top file yet */
        if(H5FO_top_count(dataset->oloc.file, dataset->oloc.addr) == 0) {
            /* Open the object through this top file */
            if(H5O_open(&(dataset->oloc)) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, NULL, "unable to open object header")
        } /* end if */

        /* Increment object count for the object in the top file */
        if(H5FO_top_incr(dataset->oloc.file, dataset->oloc.addr) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINC, NULL, "can't increment object count")
    } /* end else */

    ret_value = dataset;

done:
    if(ret_value == NULL) {
        /* Free the location--casting away const*/
        if(dataset) {
            if(shared_fo == NULL)   /* Need to free shared fo */
                H5FL_FREE(H5D_shared_t, dataset->shared);

            H5O_loc_free(&(dataset->oloc));
            H5G_name_free(&(dataset->path));

            H5FL_FREE(H5D_t, dataset);
        }
        if(shared_fo)
            shared_fo->fo_count--;
    } /* end if */

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_open() */


/*-------------------------------------------------------------------------
 * Function:	H5D_open_oid
 *
 * Purpose:	Opens a dataset for access.
 *
 * Return:	Dataset pointer on success, NULL on failure
 *
 * Programmer:	Quincey Koziol
 *		Monday, October 12, 1998
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5D_open_oid(H5D_t *dataset, hid_t dxpl_id)
{
    H5O_fill_new_t  fill;
    unsigned    alloc_time_state;       /* Allocation time state */
    H5O_fill_t     *fill_prop;          /* Pointer to dataset's fill value area */
    H5O_pline_t  pline;                 /* I/O pipeline information */
    H5P_genplist_t *plist;              /* Property list */
    herr_t ret_value = SUCCEED;		/* Return value			*/

    FUNC_ENTER_NOAPI_NOINIT(H5D_open_oid)

    /* check args */
    HDassert(dataset);

    /* (Set the 'vl_type' parameter to FALSE since it doesn't matter from here) */
    if(NULL == (dataset->shared = H5D_new(H5P_DATASET_CREATE_DEFAULT, FALSE, FALSE)))
        HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")

    /* Initialize the fill value message JAMES: initialize above instead? */
    HDmemset(&fill,0,sizeof(H5O_fill_new_t));
    fill.alloc_time = H5D_ALLOC_TIME_LATE;
    fill.fill_time = H5D_FILL_TIME_IFSET;
    fill.fill_defined = TRUE;

    /* Open the dataset object */
    if(H5O_open(&(dataset->oloc)) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, FAIL, "unable to open")

    /* Get the type and space */
    if(NULL == (dataset->shared->type = H5O_read(&(dataset->oloc), H5O_DTYPE_ID, 0, NULL, dxpl_id)))
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to load type info from dataset header")
    /* Get a datatype ID for the dataset's datatype */
    if((dataset->shared->type_id = H5I_register(H5I_DATATYPE, dataset->shared->type))<0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTREGISTER, FAIL, "unable to register type")

    if(NULL == (dataset->shared->space = H5S_read(&(dataset->oloc), dxpl_id)))
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to load space info from dataset header")

    /* Get dataset creation property list object */
    if(NULL == (plist = H5I_object(dataset->shared->dcpl_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get dataset creation property list")

    /* Get the optional filters message */
    if(NULL == H5O_read(&(dataset->oloc), H5O_PLINE_ID, 0, &pline, dxpl_id)) {
        H5E_clear_stack(NULL);
        HDmemset(&pline, 0, sizeof(pline));
    } /* end if */
    if(H5P_set(plist, H5D_CRT_DATA_PIPELINE_NAME, &pline) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set pipeline")

    /*
     * Get the raw data layout info.  It's actually stored in two locations:
     * the storage message of the dataset (dataset->storage) and certain
     * values are copied to the dataset create plist so the user can query
     * them.
     */
    if(NULL == H5O_read(&(dataset->oloc), H5O_LAYOUT_ID, 0, &(dataset->shared->layout), dxpl_id))
        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to read data layout message")
    if(H5P_set(plist, H5D_CRT_LAYOUT_NAME, &dataset->shared->layout.type) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set layout")
    switch (dataset->shared->layout.type) {
        case H5D_CONTIGUOUS:
            /* Compute the size of the contiguous storage for versions of the
             * layout message less than version 3 because versions 1 & 2 would
             * truncate the dimension sizes to 32-bits of information. - QAK 5/26/04
             */
            if(dataset->shared->layout.version<3) {
                hssize_t tmp_size;                      /* Temporary holder for raw data size */

                tmp_size = H5S_GET_EXTENT_NPOINTS(dataset->shared->space) *
                                        H5T_get_size(dataset->shared->type);
                H5_ASSIGN_OVERFLOW(dataset->shared->layout.u.contig.size,tmp_size,hssize_t,hsize_t);
            } /* end if */

            /* Set the I/O functions for this layout type */
            dataset->shared->io_ops.readvv=H5D_contig_readvv;
            dataset->shared->io_ops.writevv=H5D_contig_writevv;

            /* Get the sieve buffer size for this dataset */
            dataset->shared->cache.contig.sieve_buf_size = H5F_SIEVE_BUF_SIZE(dataset->oloc.file);
            break;

        case H5D_CHUNKED:
            /*
             * Chunked storage.  The creation plist's dimension is one less than
             * the chunk dimension because the chunk includes a dimension for the
             * individual bytes of the datatype.
             */
            {
                unsigned     chunk_ndims;           /* Dimensionality of chunk */

                chunk_ndims  = dataset->shared->layout.u.chunk.ndims - 1;

                if(H5P_set(plist, H5D_CRT_CHUNK_DIM_NAME, &chunk_ndims) < 0)
                     HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set chunk dimensions")
                if(H5P_set(plist, H5D_CRT_CHUNK_SIZE_NAME, dataset->shared->layout.u.chunk.dim) < 0)
                     HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set chunk size")

                /* Initialize the chunk cache for the dataset */
                if(H5D_istore_init(dataset->oloc.file, dataset)<0)
                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't initialize chunk cache")
            }

            /* Set the I/O functions for this layout type */
            dataset->shared->io_ops.readvv=H5D_istore_readvv;
            dataset->shared->io_ops.writevv=H5D_istore_writevv;
            break;

        case H5D_COMPACT:
            /* Set the I/O functions for this layout type */
            dataset->shared->io_ops.readvv=H5D_compact_readvv;
            dataset->shared->io_ops.writevv=H5D_compact_writevv;
            break;

        default:
            HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "not implemented yet")
    } /* end switch */ /*lint !e788 All appropriate cases are covered */

    /* Point at dataset's copy, to cache it for later */
    fill_prop=&dataset->shared->fill;

    /* Retrieve & release the previous fill-value settings */
    if(H5P_get(plist, H5D_CRT_FILL_VALUE_NAME, fill_prop) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't get fill value")
    if(H5O_reset(H5O_FILL_ID, fill_prop)<0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "can't release fill info")

    /* Get the new fill value message */
    if(NULL == H5O_read(&(dataset->oloc), H5O_FILL_NEW_ID, 0, &fill, dxpl_id)) {
        H5E_clear_stack(NULL);
        HDmemset(&fill, 0, sizeof(fill));

        /* Set the space allocation time appropriately, based on the type of dataset storage */
        switch (dataset->shared->layout.type) {
            case H5D_COMPACT:
                fill.alloc_time=H5D_ALLOC_TIME_EARLY;
                break;

            case H5D_CONTIGUOUS:
                fill.alloc_time=H5D_ALLOC_TIME_LATE;
                break;

            case H5D_CHUNKED:
                fill.alloc_time=H5D_ALLOC_TIME_INCR;
                break;

            default:
                HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "not implemented yet")
        } /* end switch */ /*lint !e788 All appropriate cases are covered */

        /* Set the default fill time */
        fill.fill_time = H5D_FILL_TIME_IFSET;
    } /* end if */
    if(fill.fill_defined) {
        if(NULL==H5O_copy(H5O_FILL_ID, &fill, fill_prop))
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't copy fill value")
    } else {
	/* For compatibility with v1.4.  Retrieve the old fill value message.
 	 * If size is 0, make it -1 for undefined. */
        if(NULL == H5O_read(&(dataset->oloc), H5O_FILL_ID, 0, fill_prop, dxpl_id)) {
            H5E_clear_stack(NULL);
            HDmemset(fill_prop, 0, sizeof(H5O_fill_t));
        } /* end if */
        if(fill_prop->size == 0) {
	    fill_prop->type = fill_prop->buf = NULL;
	    fill_prop->size = (size_t)-1;
	} /* end if */
    } /* end else */
    alloc_time_state=0;
    if( (dataset->shared->layout.type==H5D_COMPACT && fill.alloc_time==H5D_ALLOC_TIME_EARLY)
            || (dataset->shared->layout.type==H5D_CONTIGUOUS && fill.alloc_time==H5D_ALLOC_TIME_LATE)
            || (dataset->shared->layout.type==H5D_CHUNKED && fill.alloc_time==H5D_ALLOC_TIME_INCR))
        alloc_time_state=1;

    /* Set revised fill value properties */
    if(H5P_set(plist, H5D_CRT_FILL_VALUE_NAME, fill_prop) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set fill value")
    dataset->shared->alloc_time=fill.alloc_time;        /* Cache this for later */
    if(H5P_set(plist, H5D_CRT_ALLOC_TIME_NAME, &fill.alloc_time) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set allocation time")
    if(H5P_set(plist, H5D_CRT_ALLOC_TIME_STATE_NAME, &alloc_time_state) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set allocation time state")
    dataset->shared->fill_time=fill.fill_time;          /* Cache this for later */
    if(H5P_set(plist, H5D_CRT_FILL_TIME_NAME, &fill.fill_time) < 0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set fill time")

    /* Get the external file list message, which might not exist.  Space is
     * also undefined when space allocate time is H5D_ALLOC_TIME_LATE. */
    if((dataset->shared->layout.type==H5D_CONTIGUOUS && !H5F_addr_defined(dataset->shared->layout.u.contig.addr))
            || (dataset->shared->layout.type==H5D_CHUNKED && !H5F_addr_defined(dataset->shared->layout.u.chunk.addr))) {
        HDmemset(&dataset->shared->efl,0,sizeof(H5O_efl_t));
        if(NULL != H5O_read(&(dataset->oloc), H5O_EFL_ID, 0, &dataset->shared->efl, dxpl_id)) {
            if(H5P_set(plist, H5D_CRT_EXT_FILE_LIST_NAME, &dataset->shared->efl) < 0)
            	HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set external file list")

            /* Override the I/O functions for this layout type */
            dataset->shared->io_ops.readvv=H5D_efl_readvv;
            dataset->shared->io_ops.writevv=H5D_efl_writevv;
        } /* end if */
    } /* end if */

    /*
     * Make sure all storage is properly initialized.
     * This is important only for parallel I/O where the space must
     * be fully allocated before I/O can happen.
     */
    if((H5F_get_intent(dataset->oloc.file) & H5F_ACC_RDWR)
            && ((dataset->shared->layout.type==H5D_CONTIGUOUS && !H5F_addr_defined(dataset->shared->layout.u.contig.addr))
                || (dataset->shared->layout.type==H5D_CHUNKED && !H5F_addr_defined(dataset->shared->layout.u.chunk.addr)))
            && IS_H5FD_MPI(dataset->oloc.file)) {
        if(H5D_alloc_storage(dataset->oloc.file, dxpl_id, dataset,H5D_ALLOC_OPEN, TRUE, FALSE)<0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize file storage")
    } /* end if */

    /* Get the dataset's DCPL cache info */
    if(H5D_get_dcpl_cache(dataset->shared->dcpl_id,&dataset->shared->dcpl_cache)<0)
        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill DCPL cache")

done:
    /* Release fill value information */
    if(H5O_reset(H5O_FILL_ID, &fill) < 0)
        HDONE_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "unable to release fill-value info")

    if(ret_value < 0) {
        if(H5F_addr_defined(dataset->oloc.addr)) {
            if(H5O_close(&(dataset->oloc)) < 0)
                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release object header")
        } /* end if */
        if(dataset->shared->space) {
            if(H5S_close(dataset->shared->space) < 0)
                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
        } /* end if */
        if(dataset->shared->type) {
            if(H5I_dec_ref(dataset->shared->type_id) < 0)
                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
        } /* end if */
    } /* end if */

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_open_oid() */


/*-------------------------------------------------------------------------
 * Function:	H5D_close
 *
 * Purpose:	Insures that all data has been saved to the file, closes the
 *		dataset object header, and frees all resources used by the
 *		descriptor.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Robb Matzke
 *		Thursday, December  4, 1997
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5D_close(H5D_t *dataset)
{
    unsigned                free_failed=FALSE;
    herr_t                  ret_value=SUCCEED;      /* Return value */

    FUNC_ENTER_NOAPI(H5D_close, FAIL)

    /* check args */
    assert(dataset && dataset->oloc.file && dataset->shared);
    assert(dataset->shared->fo_count >0);

    /* Dump debugging info */
#ifdef H5D_ISTORE_DEBUG
    H5D_istore_stats(dataset, FALSE);
#endif /* H5F_ISTORE_DEBUG */

    dataset->shared->fo_count--;
    if(dataset->shared->fo_count ==0)
    {
        /* Free the data sieve buffer, if it's been allocated */
        if(dataset->shared->cache.contig.sieve_buf) {
            assert(dataset->shared->layout.type!=H5D_COMPACT);      /* We should never have a sieve buffer for compact storage */

            /* Flush the raw data buffer, if its dirty */
            if (dataset->shared->cache.contig.sieve_dirty) {
                /* Write dirty data sieve buffer to file */
                if (H5F_block_write(dataset->oloc.file, H5FD_MEM_DRAW, dataset->shared->cache.contig.sieve_loc,
                        dataset->shared->cache.contig.sieve_size, H5AC_dxpl_id, dataset->shared->cache.contig.sieve_buf) < 0)
                    HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "block write failed")

                /* Reset sieve buffer dirty flag */
                dataset->shared->cache.contig.sieve_dirty=0;
            } /* end if */

            dataset->shared->cache.contig.sieve_buf = H5FL_BLK_FREE (sieve_buf,dataset->shared->cache.contig.sieve_buf);
        } /* end if */

        /* Free cached information for each kind of dataset */
        switch(dataset->shared->layout.type) {
            case H5D_CONTIGUOUS:
                break;

            case H5D_CHUNKED:
                /* Flush and destroy chunks in the cache */
                if(H5D_istore_dest(dataset,H5AC_dxpl_id)<0)
                    HGOTO_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "unable to destroy chunk cache")
                break;

            case H5D_COMPACT:
                /* Update header message of layout for compact dataset. */
                if(dataset->shared->layout.u.compact.dirty) {
                    if(H5O_modify(&(dataset->oloc), H5O_LAYOUT_ID, 0, 0, H5O_UPDATE_TIME, &(dataset->shared->layout), H5AC_dxpl_id)<0)
                        HGOTO_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "unable to update layout message")
                    dataset->shared->layout.u.compact.dirty = FALSE;
                } /* end if */

                /* Free the buffer for the raw data for compact datasets */
                dataset->shared->layout.u.compact.buf=H5MM_xfree(dataset->shared->layout.u.compact.buf);
                break;

            default:
                assert ("not implemented yet" && 0);
#ifdef NDEBUG
                HGOTO_ERROR (H5E_IO, H5E_UNSUPPORTED, FAIL, "unsupported storage layout")
#endif /* NDEBUG */
        } /* end switch */ /*lint !e788 All appropriate cases are covered */

        /*
        * Release datatype, dataspace and creation property list -- there isn't
        * much we can do if one of these fails, so we just continue.
        */
        free_failed=(H5I_dec_ref(dataset->shared->type_id)<0 || H5S_close(dataset->shared->space)<0 ||
                          H5I_dec_ref(dataset->shared->dcpl_id) < 0);

        /* Remove the dataset from the list of opened objects in the file */
        if(H5FO_top_decr(dataset->oloc.file, dataset->oloc.addr) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "can't decrement count for object")
        if(H5FO_delete(dataset->oloc.file, H5AC_dxpl_id, dataset->oloc.addr) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "can't remove dataset from list of open objects")

        /* Close the dataset object */
        /* (This closes the file, if this is the last object open) */
        if(H5O_close(&(dataset->oloc)) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release object header")

        /*
        * Free memory.  Before freeing the memory set the file pointer to NULL.
        * We always check for a null file pointer in other H5D functions to be
        * sure we're not accessing an already freed dataset (see the assert()
        * above).
        */
        dataset->oloc.file = NULL;

        H5FL_FREE(H5D_shared_t,dataset->shared);
    } /* end if */
    else
    {
        /* Decrement the ref. count for this object in the top file */
        if(H5FO_top_decr(dataset->oloc.file, dataset->oloc.addr) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "can't decrement count for object")

        /* Check reference count for this object in the top file */
        if(H5FO_top_count(dataset->oloc.file, dataset->oloc.addr) == 0)
            if(H5O_close(&(dataset->oloc)) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to close")
    } /* end else */

   if(H5G_name_free(&(dataset->path)) < 0)
       free_failed=TRUE;

    H5FL_FREE(H5D_t,dataset);

    if (free_failed)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "couldn't free the type or creation property list, but the dataset was freed anyway.")

done:
    FUNC_LEAVE_NOAPI(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5D_extend
 *
 * Purpose:	Increases the size of a dataset.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Robb Matzke
 *		Friday, January 30, 1998
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5D_extend (H5D_t *dataset, const hsize_t *size, hid_t dxpl_id)
{
    int	changed;                        /* Flag to indicate that the dataspace was successfully extended */
    H5S_t	*space = NULL;          /* Dataset's dataspace */
    H5D_fill_value_t fill_status;
    H5D_fill_time_t  fill_time;
    herr_t	ret_value=SUCCEED;      /* Return value */

    FUNC_ENTER_NOAPI(H5D_extend, FAIL)

    /* Check args */
    assert (dataset);
    assert (size);

    /* Check if the filters in the DCPL will need to encode, and if so, can they?
     * Filters need encoding if fill value is defined and a fill policy is set that requires
     * writing on an extend.
     */
    if(! dataset->shared->checked_filters)
    {
        if(H5P_is_fill_value_defined(&(dataset->shared->fill), &fill_status) < 0)
            HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "Couldn't retrieve fill value from dataset.")

        if(fill_status == H5D_FILL_VALUE_DEFAULT || fill_status == H5D_FILL_VALUE_USER_DEFINED)
        {
            if( H5Pget_fill_time(dataset->shared->dcpl_id, &fill_time) < 0)
                HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "Couldn't retrieve fill time from dataset.")

            if(fill_time == H5D_FILL_TIME_ALLOC ||
                    (fill_time == H5D_FILL_TIME_IFSET && fill_status == H5D_FILL_VALUE_USER_DEFINED) )
            {
                /* Filters must have encoding enabled. Ensure that all filters can be applied */
                if(H5Z_can_apply(dataset->shared->dcpl_id, dataset->shared->type_id) <0)
                    HGOTO_ERROR(H5E_PLINE, H5E_CANAPPLY, FAIL, "can't apply filters")

                dataset->shared->checked_filters = TRUE;
            }
        }
    }

    /*
     * NOTE: Restrictions on extensions were checked when the dataset was
     *	     created.  All extensions are allowed here since none should be
     *	     able to muck things up.
     */

    /* Increase the size of the data space */
    space=dataset->shared->space;
    if ((changed=H5S_extend (space, size))<0)
	HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL, "unable to increase size of data space")

    if (changed>0){
	/* Save the new dataspace in the file if necessary */
	if(H5S_modify (&(dataset->oloc), space, TRUE, dxpl_id) < 0)
	    HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to update file with new dataspace")

        /* Update the index values for the cached chunks for this dataset */
        if(H5D_CHUNKED == dataset->shared->layout.type)
            if(H5D_istore_update_cache(dataset, dxpl_id) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to update cached chunk indices")

	/* Allocate space for the new parts of the dataset, if appropriate */
        if(dataset->shared->alloc_time == H5D_ALLOC_TIME_EARLY)
            if(H5D_alloc_storage(dataset->oloc.file, dxpl_id, dataset, H5D_ALLOC_EXTEND, TRUE, FALSE) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize dataset with fill value")
    } /* end if */

done:
    FUNC_LEAVE_NOAPI(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5D_oloc
 *
 * Purpose:	Returns a pointer to the object location for a dataset.
 *
 * Return:	Success:	Ptr to location
 *		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *              Friday, April 24, 1998
 *
 *-------------------------------------------------------------------------
 */
H5O_loc_t *
H5D_oloc(H5D_t *dataset)
{
    /* Use FUNC_ENTER_NOAPI_NOINIT_NOFUNC here to avoid performance issues */
    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5D_oloc)

    FUNC_LEAVE_NOAPI(dataset ? &(dataset->oloc) : (H5O_loc_t *)NULL)
} /* end H5D_oloc() */


/*-------------------------------------------------------------------------
 * Function:	H5D_nameof
 *
 * Purpose:	Returns a pointer to the group hier. path for a dataset.
 *
 * Return:	Success:	Ptr to entry
 *		Failure:	NULL
 *
 * Programmer:	Quincey Koziol
 *              Monday, September 12, 2005
 *
 *-------------------------------------------------------------------------
 */
H5G_name_t *
H5D_nameof(H5D_t *dataset)
{
    /* Use FUNC_ENTER_NOAPI_NOINIT_NOFUNC here to avoid performance issues */
    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5D_nameof)

    FUNC_LEAVE_NOAPI(dataset ? &(dataset->path) : (H5G_name_t *)NULL)
} /* end H5D_nameof() */


/*-------------------------------------------------------------------------
 * Function:	H5D_typeof
 *
 * Purpose:	Returns a pointer to the dataset's datatype.  The datatype
 *		is not copied.
 *
 * Return:	Success:	Ptr to the dataset's datatype, uncopied.
 *
 *		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *              Thursday, June  4, 1998
 *
 *-------------------------------------------------------------------------
 */
H5T_t *
H5D_typeof (const H5D_t *dset)
{
    /* Use FUNC_ENTER_NOAPI_NOINIT_NOFUNC here to avoid performance issues */
    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5D_typeof)

    assert (dset);
    assert (dset->shared->type);

    FUNC_LEAVE_NOAPI(dset->shared->type)
}


/*-------------------------------------------------------------------------
 * Function:  H5D_get_file
 *
 * Purpose:   Returns the dataset's file pointer.
 *
 * Return:    Success:        Ptr to the dataset's file pointer.
 *
 *            Failure:        NULL
 *
 * Programmer:        Quincey Koziol
 *              Thursday, October 22, 1998
 *
 *-------------------------------------------------------------------------
 */
static H5F_t *
H5D_get_file (const H5D_t *dset)
{
    /* Use FUNC_ENTER_NOAPI_NOINIT_NOFUNC here to avoid performance issues */
    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5D_get_file)

    HDassert(dset);
    HDassert(dset->oloc.file);

    FUNC_LEAVE_NOAPI(dset->oloc.file)
} /* end H5D_get_file() */


/*-------------------------------------------------------------------------
 * Function:	H5D_alloc_storage
 *
 * Purpose:	Allocate storage for the raw data of a dataset.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Robb Matzke
 *              Friday, January 16, 1998
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5D_alloc_storage (H5F_t *f, hid_t dxpl_id, H5D_t *dset/*in,out*/, H5D_time_alloc_t time_alloc,
    hbool_t update_time, hbool_t full_overwrite)
{
    struct H5O_layout_t *layout;        /* The dataset's layout information */
    unsigned init_space=0;              /* Flag to indicate that space should be initialized */
    unsigned addr_set=0;                /* Flag to indicate that the dataset's storage address was set */
    herr_t      ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI_NOINIT(H5D_alloc_storage)

    /* check args */
    assert (f);
    assert (dset);

    /* If the data is stored in external files, don't set an address for the layout
     * We assume that external storage is already
     * allocated by the caller, or at least will be before I/O is performed.
     */
    if(!(H5S_NULL == H5S_GET_EXTENT_TYPE(dset->shared->space) || dset->shared->efl.nused>0)) {
        /* Get a pointer to the dataset's layout information */
        layout=&(dset->shared->layout);

        switch (layout->type) {
            case H5D_CONTIGUOUS:
                if(layout->u.contig.addr==HADDR_UNDEF) {
                    /* Reserve space in the file for the entire array */
                    if (H5D_contig_create (f, dxpl_id, layout/*out*/)<0)
                        HGOTO_ERROR (H5E_IO, H5E_CANTINIT, FAIL, "unable to initialize contiguous storage")

                    /* Indicate that we set the storage addr */
                    addr_set=1;

                    /* Indicate that we should initialize storage space */
                    init_space=1;
                } /* end if */
                break;

            case H5D_CHUNKED:
                if(layout->u.chunk.addr==HADDR_UNDEF) {
                    /* Create the root of the B-tree that describes chunked storage */
                    if (H5D_istore_create (f, dxpl_id, layout/*out*/)<0)
                        HGOTO_ERROR (H5E_IO, H5E_CANTINIT, FAIL, "unable to initialize chunked storage")

                    /* Indicate that we set the storage addr */
                    addr_set=1;

                    /* Indicate that we should initialize storage space */
                    init_space=1;
                } /* end if */

                /* If space allocation is set to 'early' and we are extending
		 * the dataset, indicate that space should be allocated, so the
                 * B-tree gets expanded. -QAK
                 */
		if(dset->shared->alloc_time == H5D_ALLOC_TIME_EARLY &&
			time_alloc == H5D_ALLOC_EXTEND)
		{
		    init_space=1;
		}
                break;

            case H5D_COMPACT:
                /* Check if space is already allocated */
                if(layout->u.compact.buf==NULL) {
                    /* Reserve space in layout header message for the entire array. */
                    assert(layout->u.compact.size>0);
                    if (NULL==(layout->u.compact.buf=H5MM_malloc(layout->u.compact.size)))
                        HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate memory for compact dataset")
                    if(!full_overwrite)
                        HDmemset(layout->u.compact.buf, 0, layout->u.compact.size);
                    layout->u.compact.dirty = TRUE;

                    /* Indicate that we set the storage addr */
                    addr_set=1;

                    /* Indicate that we should initialize storage space */
                    init_space=1;
                } /* end if */
                break;

            default:
                assert ("not implemented yet" && 0);
#ifdef NDEBUG
                HGOTO_ERROR (H5E_IO, H5E_UNSUPPORTED, FAIL, "unsupported storage layout")
#endif /* NDEBUG */
        } /* end switch */ /*lint !e788 All appropriate cases are covered */

        /* Check if we need to initialize the space */
        if(init_space) {
            if (layout->type==H5D_CHUNKED) {
                /* If we are doing incremental allocation and the B-tree got
                 * created during a H5Dwrite call, don't initialize the storage
                 * now, wait for the actual writes to each block and let the
                 * low-level chunking routines handle initialize the fill-values.
                 * Otherwise, pass along the space initialization call and let
                 * the low-level chunking routines sort out whether to write
                 * fill values to the chunks they allocate space for.  Yes,
                 * this is icky. -QAK
                 */
                if(!(dset->shared->alloc_time==H5D_ALLOC_TIME_INCR && time_alloc==H5D_ALLOC_WRITE)) {
                    if(H5D_init_storage(dset, full_overwrite, dxpl_id) < 0)
                        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize dataset with fill value")
                } /* end if */
            } /* end if */
            else {
                H5D_fill_value_t	fill_status;    /* The fill value status */

                /* Check the dataset's fill-value status */
                if (H5P_is_fill_value_defined(&(dset->shared->fill), &fill_status) < 0)
                    HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't tell if fill value defined")

                /* If we are filling the dataset on allocation or "if set" and
                 * the fill value _is_ set, do that now */
                if(dset->shared->fill_time==H5D_FILL_TIME_ALLOC ||
                        (dset->shared->fill_time==H5D_FILL_TIME_IFSET && fill_status==H5D_FILL_VALUE_USER_DEFINED)) {
                    if(H5D_init_storage(dset, full_overwrite, dxpl_id) < 0)
                        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize dataset with fill value")
                } /* end if */
            } /* end else */
        } /* end if */

        /* Also update header message for layout with new address, if we
         * set the address.  (this is improves forward compatibility).
         */
        if(time_alloc != H5D_ALLOC_CREATE && addr_set)
            if(H5O_modify(&(dset->oloc), H5O_LAYOUT_ID, 0, H5O_MSG_FLAG_CONSTANT, update_time, &(dset->shared->layout), dxpl_id) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update layout message")
    } /* end if */

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_alloc_storage() */


/*-------------------------------------------------------------------------
 * Function:	H5D_init_storage
 *
 * Purpose:	Initialize the data for a new dataset.  If a selection is
 *		defined for SPACE then initialize only that part of the
 *		dataset.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Robb Matzke
 *              Monday, October  5, 1998
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5D_init_storage(H5D_t *dset, hbool_t full_overwrite, hid_t dxpl_id)
{
    herr_t		ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI_NOINIT(H5D_init_storage)

    assert(dset);

    switch (dset->shared->layout.type) {
        case H5D_COMPACT:
            {
                hssize_t            snpoints;       /* Number of points in space (for error checking) */
                size_t              npoints;        /* Number of points in space */

                /* Get the number of elements in the dataset's dataspace */
                snpoints = H5S_GET_EXTENT_NPOINTS(dset->shared->space);
                assert(snpoints>=0);
                H5_ASSIGN_OVERFLOW(npoints,snpoints,hssize_t,size_t);

                /* If we will be immediately overwriting the values, don't bother to clear them */
                if(!full_overwrite) {
                    /* If the fill value is defined, initialize the data buffer with it */
                    if(dset->shared->fill.buf)
                        /* Initialize the cached data buffer with the fill value */
                        H5V_array_fill(dset->shared->layout.u.compact.buf, dset->shared->fill.buf, dset->shared->fill.size, npoints);
                    else /* If the fill value is default, zero set data buf. */
                        HDmemset(dset->shared->layout.u.compact.buf, 0, dset->shared->layout.u.compact.size);
                } /* end if */
            }
            break;

        case H5D_CONTIGUOUS:
            /* Don't write default fill values to external files */
            /* If we will be immediately overwriting the values, don't bother to clear them */
            if((dset->shared->efl.nused==0 || dset->shared->fill.buf) && !full_overwrite) {
                if (H5D_contig_fill(dset, dxpl_id)<0)
                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to allocate all chunks of dataset")
            } /* end if */
            break;

        case H5D_CHUNKED:
            /*
             * Allocate file space
             * for all chunks now and initialize each chunk with the fill value.
             */
            if (H5D_istore_allocate(dset, dxpl_id, full_overwrite)<0)
                HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to allocate all chunks of dataset")
            break;

        default:
            assert ("not implemented yet" && 0);
#ifdef NDEBUG
            HGOTO_ERROR (H5E_IO, H5E_UNSUPPORTED, FAIL, "unsupported storage layout")
#endif /* NDEBUG */
    } /* end switch */ /*lint !e788 All appropriate cases are covered */

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_init_storage() */


/*-------------------------------------------------------------------------
 * Function:	H5Dget_storage_size
 *
 * Purpose:	Returns the amount of storage that is required for the
 *		dataset. For chunked datasets this is the number of allocated
 *		chunks times the chunk size.
 *
 * Return:	Success:	The amount of storage space allocated for the
 *				dataset, not counting meta data. The return
 *				value may be zero if no data has been stored.
 *
 *		Failure:	Zero
 *
 * Programmer:	Robb Matzke
 *              Wednesday, April 21, 1999
 *
 *-------------------------------------------------------------------------
 */
hsize_t
H5Dget_storage_size(hid_t dset_id)
{
    H5D_t	*dset=NULL;
    hsize_t	ret_value;      /* Return value */

    FUNC_ENTER_API(H5Dget_storage_size, 0)
    H5TRACE1("h","i",dset_id);

    /* Check args */
    if (NULL==(dset=H5I_object_verify(dset_id, H5I_DATASET)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "not a dataset")

    /* Set return value */
    ret_value = H5D_get_storage_size(dset,H5AC_ind_dxpl_id);

done:
    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5D_get_storage_size
 *
 * Purpose:	Determines how much space has been reserved to store the raw
 *		data of a dataset.
 *
 * Return:	Success:	Number of bytes reserved to hold raw data.
 *
 *		Failure:	0
 *
 * Programmer:	Robb Matzke
 *              Wednesday, April 21, 1999
 *
 *-------------------------------------------------------------------------
 */
static hsize_t
H5D_get_storage_size(H5D_t *dset, hid_t dxpl_id)
{
    hsize_t	ret_value;

    FUNC_ENTER_NOAPI(H5D_get_storage_size, 0)

    switch(dset->shared->layout.type) {
        case H5D_CHUNKED:
            if(dset->shared->layout.u.chunk.addr == HADDR_UNDEF)
                ret_value=0;
            else
                ret_value = H5D_istore_allocated(dset, dxpl_id);
            break;

        case H5D_CONTIGUOUS:
            /* Datasets which are not allocated yet are using no space on disk */
            if(dset->shared->layout.u.contig.addr == HADDR_UNDEF)
                ret_value=0;
            else
                 ret_value=dset->shared->layout.u.contig.size;
            break;

        case H5D_COMPACT:
            ret_value = dset->shared->layout.u.compact.size;
            break;

        default:
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "not a dataset type")
    } /*lint !e788 All appropriate cases are covered */

done:
    FUNC_LEAVE_NOAPI(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5Dget_offset
 *
 * Purpose:	Returns the address of dataset in file.
 *
 * Return:	Success:        the address of dataset
 *
 *		Failure:	HADDR_UNDEF
 *
 * Programmer:  Raymond Lu
 *              November 6, 2002
 *
 *-------------------------------------------------------------------------
 */
haddr_t
H5Dget_offset(hid_t dset_id)
{
    H5D_t	*dset=NULL;
    haddr_t	ret_value;      /* Return value */

    FUNC_ENTER_API(H5Dget_offset, HADDR_UNDEF)
    H5TRACE1("a","i",dset_id);

    /* Check args */
    if (NULL==(dset=H5I_object_verify(dset_id, H5I_DATASET)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, HADDR_UNDEF, "not a dataset")

    /* Set return value */
    ret_value = H5D_get_offset(dset);

done:
    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5D_get_offset
 *
 * Purpose:	Private function for H5D_get_offset.  Returns the address
 *              of dataset in file.
 *
 * Return:	Success:        the address of dataset
 *
 *		Failure:	HADDR_UNDEF
 *
 * Programmer:  Raymond Lu
 *              November 6, 2002
 *
 *-------------------------------------------------------------------------
 */
static haddr_t
H5D_get_offset(const H5D_t *dset)
{
    haddr_t	ret_value=HADDR_UNDEF;
    haddr_t     base_addr;
    H5F_t       *f;

    FUNC_ENTER_NOAPI(H5D_get_offset, HADDR_UNDEF)

    assert(dset);

    switch(dset->shared->layout.type) {
        case H5D_CHUNKED:
        case H5D_COMPACT:
            break;

        case H5D_CONTIGUOUS:
            /* If dataspace hasn't been allocated or dataset is stored in
             * an external file, the value will be HADDR_UNDEF. */
            f =  H5D_get_file(dset);
            base_addr = H5F_get_base_addr(f);

            /* If there's user block in file, returns the absolute dataset offset
             * from the beginning of file. */
            if(base_addr!=HADDR_UNDEF)
                ret_value = dset->shared->layout.u.contig.addr + base_addr;
            else
                ret_value = dset->shared->layout.u.contig.addr;
            break;

        default:
            assert ("not implemented yet" && 0);
#ifdef NDEBUG
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, HADDR_UNDEF, "unknown dataset layout type")
#endif /* NDEBUG */
    } /*lint !e788 All appropriate cases are covered */

done:
    FUNC_LEAVE_NOAPI(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:	H5Diterate
 *
 * Purpose:	This routine iterates over all the elements selected in a memory
 *      buffer.  The callback function is called once for each element selected
 *      in the dataspace.  The selection in the dataspace is modified so
 *      that any elements already iterated over are removed from the selection
 *      if the iteration is interrupted (by the H5D_operator_t function
 *      returning non-zero) in the "middle" of the iteration and may be
 *      re-started by the user where it left off.
 *
 *      NOTE: Until "subtracting" elements from a selection is implemented,
 *          the selection is not modified.
 *
 * Parameters:
 *      void *buf;          IN/OUT: Pointer to the buffer in memory containing
 *                              the elements to iterate over.
 *      hid_t type_id;      IN: Datatype ID for the elements stored in BUF.
 *      hid_t space_id;     IN: Dataspace ID for BUF, also contains the
 *                              selection to iterate over.
 *      H5D_operator_t op; IN: Function pointer to the routine to be
 *                              called for each element in BUF iterated over.
 *      void *operator_data;    IN/OUT: Pointer to any user-defined data
 *                              associated with the operation.
 *
 * Operation information:
 *      H5D_operator_t is defined as:
 *          typedef herr_t (*H5D_operator_t)(void *elem, hid_t type_id,
 *              unsigned ndim, const hsize_t *point, void *operator_data);
 *
 *      H5D_operator_t parameters:
 *          void *elem;         IN/OUT: Pointer to the element in memory containing
 *                                  the current point.
 *          hid_t type_id;      IN: Datatype ID for the elements stored in ELEM.
 *          unsigned ndim;       IN: Number of dimensions for POINT array
 *          const hsize_t *point; IN: Array containing the location of the element
 *                                  within the original dataspace.
 *          void *operator_data;    IN/OUT: Pointer to any user-defined data
 *                                  associated with the operation.
 *
 *      The return values from an operator are:
 *          Zero causes the iterator to continue, returning zero when all
 *              elements have been processed.
 *          Positive causes the iterator to immediately return that positive
 *              value, indicating short-circuit success.  The iterator can be
 *              restarted at the next element.
 *          Negative causes the iterator to immediately return that value,
 *              indicating failure. The iterator can be restarted at the next
 *              element.
 *
 * Return:	Returns the return value of the last operator if it was non-zero,
 *          or zero if all elements were processed. Otherwise returns a
 *          negative value.
 *
 * Programmer:	Quincey Koziol
 *              Friday, June 11, 1999
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Diterate(void *buf, hid_t type_id, hid_t space_id, H5D_operator_t op,
        void *operator_data)
{
    H5S_t		   *space = NULL;
    herr_t ret_value;

    FUNC_ENTER_API(H5Diterate, FAIL)
    H5TRACE5("e","xiixx",buf,type_id,space_id,op,operator_data);

    /* Check args */
    if(NULL==op)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid operator")
    if(buf==NULL)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid buffer")
    if(H5I_DATATYPE != H5I_get_type(type_id))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid datatype")
    if(NULL == (space = H5I_object_verify(space_id, H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid dataspace")
    if(!(H5S_has_extent(space)) )
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "dataspace does not have extent set")

    ret_value = H5D_iterate(buf, type_id, space, op, operator_data);

done:
    FUNC_LEAVE_API(ret_value)
}   /* end H5Diterate() */


/*-------------------------------------------------------------------------
 * Function:	H5D_iterate
 *
 * Purpose:	Internal version of H5Diterate()
 *
 * Return:	Returns the return value of the last operator if it was non-zero,
 *          or zero if all elements were processed. Otherwise returns a
 *          negative value.
 *
 * Programmer:	Quincey Koziol
 *              Tuesday, November 22, 2005
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5D_iterate(void *buf, hid_t type_id, H5S_t *space, H5D_operator_t op,
        void *operator_data)
{
    herr_t ret_value;

    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5D_iterate)

    /* Check args */
    HDassert(buf);
    HDassert(H5I_DATATYPE == H5I_get_type(type_id));
    HDassert(space);
    HDassert(H5S_has_extent(space));
    HDassert(op);

    ret_value = H5S_select_iterate(buf, type_id, space, op, operator_data);

    FUNC_LEAVE_NOAPI(ret_value)
}   /* end H5D_iterate() */


/*-------------------------------------------------------------------------
 * Function:	H5Dvlen_reclaim
 *
 * Purpose:	Frees the buffers allocated for storing variable-length data
 *      in memory.  Only frees the VL data in the selection defined in the
 *      dataspace.  The dataset transfer property list is required to find the
 *      correct allocation/free methods for the VL data in the buffer.
 *
 * Return:	Non-negative on success, negative on failure
 *
 * Programmer:	Quincey Koziol
 *              Thursday, June 10, 1999
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Dvlen_reclaim(hid_t type_id, hid_t space_id, hid_t plist_id, void *buf)
{
    H5S_t		   *space = NULL;
    herr_t ret_value;

    FUNC_ENTER_API(H5Dvlen_reclaim, FAIL)
    H5TRACE4("e","iiix",type_id,space_id,plist_id,buf);

    /* Check args */
    if (H5I_DATATYPE != H5I_get_type(type_id) || buf == NULL)
	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid argument")
    if(NULL == (space = H5I_object_verify(space_id, H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid dataspace")
    if(!(H5S_has_extent(space)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "dataspace does not have extent set")

    /* Get the default dataset transfer property list if the user didn't provide one */
    if(H5P_DEFAULT == plist_id)
        plist_id = H5P_DATASET_XFER_DEFAULT;
    else
        if(TRUE != H5P_isa_class(plist_id, H5P_DATASET_XFER))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not xfer parms")

    /* Call internal routine */
    ret_value = H5D_vlen_reclaim(type_id, space, plist_id, buf);

done:
    FUNC_LEAVE_API(ret_value)
}   /* end H5Dvlen_reclaim() */


/*-------------------------------------------------------------------------
 * Function:	H5D_vlen_reclaim
 *
 * Purpose:	Frees the buffers allocated for storing variable-length data
 *      in memory.  Only frees the VL data in the selection defined in the
 *      dataspace.  The dataset transfer property list is required to find the
 *      correct allocation/free methods for the VL data in the buffer.
 *
 * Return:	Non-negative on success, negative on failure
 *
 * Programmer:	Quincey Koziol
 *              Tuesday, November 22, 2005
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5D_vlen_reclaim(hid_t type_id, H5S_t *space, hid_t plist_id, void *buf)
{
    H5T_vlen_alloc_info_t _vl_alloc_info;       /* VL allocation info buffer */
    H5T_vlen_alloc_info_t *vl_alloc_info = &_vl_alloc_info;   /* VL allocation info */
    herr_t ret_value;

    FUNC_ENTER_NOAPI(H5D_vlen_reclaim, FAIL)

    /* Check args */
    HDassert(H5I_DATATYPE == H5I_get_type(type_id));
    HDassert(space);
    HDassert(H5P_isa_class(plist_id, H5P_DATASET_XFER));
    HDassert(buf);

    /* Get the allocation info */
    if(H5T_vlen_get_alloc_info(plist_id,&vl_alloc_info)<0)
        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "unable to retrieve VL allocation info")

    /* Call H5D_iterate with args, etc. */
    ret_value = H5D_iterate(buf, type_id, space ,H5T_vlen_reclaim, vl_alloc_info);

done:
    FUNC_LEAVE_NOAPI(ret_value)
}   /* end H5D_vlen_reclaim() */


/*-------------------------------------------------------------------------
 * Function:	H5D_vlen_get_buf_size_alloc
 *
 * Purpose:	This routine makes certain there is enough space in the temporary
 *      buffer for the new data to read in.  All the VL data read in is actually
 *      placed in this buffer, overwriting the previous data.  Needless to say,
 *      this data is not actually usable.
 *
 * Return:	Non-negative on success, negative on failure
 *
 * Programmer:	Quincey Koziol
 *              Tuesday, August 17, 1999
 *
 *-------------------------------------------------------------------------
 */
static void *
H5D_vlen_get_buf_size_alloc(size_t size, void *info)
{
    H5D_vlen_bufsize_t *vlen_bufsize=(H5D_vlen_bufsize_t *)info;
    void *ret_value;    /* Return value */

    FUNC_ENTER_NOAPI(H5D_vlen_get_buf_size_alloc, NULL)

    /* Get a temporary pointer to space for the VL data */
    if ((vlen_bufsize->vl_tbuf=H5FL_BLK_REALLOC(vlen_vl_buf,vlen_bufsize->vl_tbuf,size))!=NULL)
        vlen_bufsize->size+=size;

    /* Set return value */
    ret_value=vlen_bufsize->vl_tbuf;

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_vlen_get_buf_size_alloc() */


/*-------------------------------------------------------------------------
 * Function:	H5D_vlen_get_buf_size
 *
 * Purpose:	This routine checks the number of bytes required to store a single
 *      element from a dataset in memory, creating a selection with just the
 *      single element selected to read in the element and using a custom memory
 *      allocator for any VL data encountered.
 *          The *size value is modified according to how many bytes are
 *      required to store the element in memory.
 *
 * Implementation: This routine actually performs the read with a custom
 *      memory manager which basically just counts the bytes requested and
 *      uses a temporary memory buffer (through the H5FL API) to make certain
 *      enough space is available to perform the read.  Then the temporary
 *      buffer is released and the number of bytes allocated is returned.
 *      Kinda kludgy, but easier than the other method of trying to figure out
 *      the sizes without actually reading the data in... - QAK
 *
 * Return:	Non-negative on success, negative on failure
 *
 * Programmer:	Quincey Koziol
 *              Tuesday, August 17, 1999
 *
 *-------------------------------------------------------------------------
 */
/* ARGSUSED */
static herr_t
H5D_vlen_get_buf_size(void UNUSED *elem, hid_t type_id, unsigned UNUSED ndim, const hsize_t *point, void *op_data)
{
    H5D_vlen_bufsize_t *vlen_bufsize = (H5D_vlen_bufsize_t *)op_data;
    H5T_t	*dt = NULL;
    herr_t ret_value = 0;         /* The correct return value, if this function succeeds */

    FUNC_ENTER_NOAPI(H5D_vlen_get_buf_size, FAIL)

    HDassert(op_data);
    HDassert(H5I_DATATYPE == H5I_get_type(type_id));

    /* Check args */
    if(NULL == (dt = H5I_object(type_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")

    /* Make certain there is enough fixed-length buffer available */
    if((vlen_bufsize->fl_tbuf=H5FL_BLK_REALLOC(vlen_fl_buf, vlen_bufsize->fl_tbuf, H5T_get_size(dt))) == NULL)
        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't resize tbuf")

    /* Select point to read in */
    if(H5Sselect_elements(vlen_bufsize->fspace_id, H5S_SELECT_SET, (size_t)1, (const hsize_t **)point)<0)
        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCREATE, FAIL, "can't select point")

    /* Read in the point (with the custom VL memory allocator) */
    if(H5Dread(vlen_bufsize->dataset_id, type_id, vlen_bufsize->mspace_id, vlen_bufsize->fspace_id, vlen_bufsize->xfer_pid, vlen_bufsize->fl_tbuf)<0)
        HGOTO_ERROR(H5E_DATASET, H5E_READERROR, FAIL, "can't read point")

done:
    FUNC_LEAVE_NOAPI(ret_value)
}   /* end H5D_vlen_get_buf_size() */


/*-------------------------------------------------------------------------
 * Function:	H5Dvlen_get_buf_size
 *
 * Purpose:	This routine checks the number of bytes required to store the VL
 *      data from the dataset, using the space_id for the selection in the
 *      dataset on disk and the type_id for the memory representation of the
 *      VL data, in memory.  The *size value is modified according to how many
 *      bytes are required to store the VL data in memory.
 *
 * Implementation: This routine actually performs the read with a custom
 *      memory manager which basically just counts the bytes requested and
 *      uses a temporary memory buffer (through the H5FL API) to make certain
 *      enough space is available to perform the read.  Then the temporary
 *      buffer is released and the number of bytes allocated is returned.
 *      Kinda kludgy, but easier than the other method of trying to figure out
 *      the sizes without actually reading the data in... - QAK
 *
 * Return:	Non-negative on success, negative on failure
 *
 * Programmer:	Quincey Koziol
 *              Wednesday, August 11, 1999
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Dvlen_get_buf_size(hid_t dataset_id, hid_t type_id, hid_t space_id,
        hsize_t *size)
{
    H5D_vlen_bufsize_t vlen_bufsize = {0, 0, 0, 0, 0, 0, 0};
    char bogus;         /* bogus value to pass to H5Diterate() */
    H5S_t		   *space = NULL;
    H5P_genclass_t  *pclass;    /* Property class */
    H5P_genplist_t  *plist;     /* Property list */
    herr_t ret_value=FAIL;

    FUNC_ENTER_API(H5Dvlen_get_buf_size, FAIL)
    H5TRACE4("e","iii*h",dataset_id,type_id,space_id,size);

    /* Check args */
    if(H5I_DATASET!=H5I_get_type(dataset_id) ||
            H5I_DATATYPE!=H5I_get_type(type_id) || size==NULL)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid argument")
    if(NULL == (space = H5I_object_verify(space_id, H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid dataspace")
    if(!(H5S_has_extent(space)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "dataspace does not have extent set")

    /* Save the dataset ID */
    vlen_bufsize.dataset_id=dataset_id;

    /* Get a copy of the dataspace ID */
    if((vlen_bufsize.fspace_id=H5Dget_space(dataset_id))<0)
        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, FAIL, "can't copy dataspace")

    /* Create a scalar for the memory dataspace */
    if((vlen_bufsize.mspace_id = H5Screate(H5S_SCALAR)) < 0)
        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, FAIL, "can't create dataspace")

    /* Grab the temporary buffers required */
    if((vlen_bufsize.fl_tbuf = H5FL_BLK_MALLOC(vlen_fl_buf, (size_t)1)) == NULL)
        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "no temporary buffers available")
    if((vlen_bufsize.vl_tbuf = H5FL_BLK_MALLOC(vlen_vl_buf, (size_t)1)) == NULL)
        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "no temporary buffers available")

    /* Get the pointer to the dataset transfer class */
    if (NULL == (pclass = H5I_object(H5P_CLS_DATASET_XFER_g)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list class")

    /* Change to the custom memory allocation routines for reading VL data */
    if((vlen_bufsize.xfer_pid=H5P_create_id(pclass))<0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTCREATE, FAIL, "no dataset xfer plists available")

    /* Get the property list struct */
    if (NULL == (plist = H5I_object(vlen_bufsize.xfer_pid)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list")

    /* Set the memory manager to the special allocation routine */
    if(H5P_set_vlen_mem_manager(plist,H5D_vlen_get_buf_size_alloc,&vlen_bufsize,NULL,NULL)<0)
        HGOTO_ERROR(H5E_PLIST, H5E_CANTINIT, FAIL, "can't set VL data allocation routine")

    /* Set the initial number of bytes required */
    vlen_bufsize.size=0;

    /* Call H5D_iterate with args, etc. */
    ret_value = H5D_iterate(&bogus, type_id, space, H5D_vlen_get_buf_size, &vlen_bufsize);

    /* Get the size if we succeeded */
    if(ret_value>=0)
        *size=vlen_bufsize.size;

done:
    if(vlen_bufsize.fspace_id>0) {
        if(H5I_dec_ref(vlen_bufsize.fspace_id)<0)
            HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
    } /* end if */
    if(vlen_bufsize.mspace_id>0) {
        if(H5I_dec_ref(vlen_bufsize.mspace_id)<0)
            HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
    } /* end if */
    if(vlen_bufsize.fl_tbuf!=NULL)
        H5FL_BLK_FREE(vlen_fl_buf,vlen_bufsize.fl_tbuf);
    if(vlen_bufsize.vl_tbuf!=NULL)
        H5FL_BLK_FREE(vlen_vl_buf,vlen_bufsize.vl_tbuf);
    if(vlen_bufsize.xfer_pid>0) {
        if(H5I_dec_ref(vlen_bufsize.xfer_pid)<0)
            HDONE_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "unable to decrement ref count on property list")
    } /* end if */

    FUNC_LEAVE_API(ret_value)
}   /* end H5Dvlen_get_buf_size() */


/*-------------------------------------------------------------------------
 * Function: H5Dset_extent
 *
 * Purpose: Modifies the dimensions of a dataset, based on H5Dextend.
 *  Can change to a lower dimension.
 *
 * Return: Success: SUCCEED, Failure: FAIL
 *
 * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
 *
 * Date: April 9, 2002
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Dset_extent(hid_t dset_id, const hsize_t *size)
{
    H5D_t                  *dset = NULL;
    herr_t                  ret_value=SUCCEED;  /* Return value */

    FUNC_ENTER_API(H5Dset_extent, FAIL)
    H5TRACE2("e","i*h",dset_id,size);

    /* Check args */
    if(NULL == (dset = H5I_object_verify(dset_id, H5I_DATASET)))
	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
    if(!size)
	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no size specified")

    /* Private function */
    if(H5D_set_extent(dset, size, H5AC_dxpl_id) < 0)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to set extend dataset")

done:
    FUNC_LEAVE_API(ret_value)
}


/*-------------------------------------------------------------------------
 * Function: H5D_set_extent
 *
 * Purpose: Based in H5D_extend, allows change to a lower dimension,
 *  calls H5S_set_extent and H5D_istore_prune_by_extent instead
 *
 * Return: Success: SUCCEED, Failure: FAIL
 *
 * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
 *             Robb Matzke
 *
 * Date: April 9, 2002
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5D_set_extent(H5D_t *dset, const hsize_t *size, hid_t dxpl_id)
{
    hsize_t                 curr_dims[H5O_LAYOUT_NDIMS];	/* Current dimension sizes */
    int                     rank;	/* Dataspace # of dimensions */
    herr_t                  ret_value = SUCCEED;        /* Return value */
    H5S_t                  *space = NULL;
    int                     u;
    unsigned                shrink = 0;         /* Flag to indicate a dimension has shrank */
    unsigned                expand = 0;         /* Flag to indicate a dimension has grown */
    int                     changed = 0;

    FUNC_ENTER_NOAPI(H5D_set_extent, FAIL)

    /* Check args */
    assert(dset);
    assert(size);

 /*-------------------------------------------------------------------------
  * Get the data space
  *-------------------------------------------------------------------------
  */
    space = dset->shared->space;

 /*-------------------------------------------------------------------------
  * Check if we are shrinking or expanding any of the dimensions
  *-------------------------------------------------------------------------
  */
    if((rank = H5S_get_simple_extent_dims(space, curr_dims, NULL)) < 0)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get dataset dimensions")

    for(u = 0; u < rank; u++) {
	if(size[u] < curr_dims[u])
	    shrink = 1;
	if(size[u] > curr_dims[u])
	    expand = 1;
    }

 /*-------------------------------------------------------------------------
  * Modify the size of the data space
  *-------------------------------------------------------------------------
  */
    if((changed=H5S_set_extent(space, size)) < 0)
	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")

    /* Don't bother updating things, unless they've changed */
    if(changed) {
     /*-------------------------------------------------------------------------
      * Modify the dataset storage
      *-------------------------------------------------------------------------
      */
        /* Save the new dataspace in the file if necessary */
        if(H5S_modify(&(dset->oloc), space, TRUE, dxpl_id) < 0)
            HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to update file with new dataspace")

        /* Update the index values for the cached chunks for this dataset */
        if(H5D_CHUNKED == dset->shared->layout.type)
            if(H5D_istore_update_cache(dset, dxpl_id) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to update cached chunk indices")

	/* Allocate space for the new parts of the dataset, if appropriate */
        if(expand && dset->shared->alloc_time==H5D_ALLOC_TIME_EARLY)
            if(H5D_alloc_storage(dset->oloc.file, dxpl_id, dset, H5D_ALLOC_EXTEND, TRUE, FALSE) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize dataset storage")


     /*-------------------------------------------------------------------------
      * Remove chunk information in the case of chunked datasets
      * This removal takes place only in case we are shrinking the dateset
      *-------------------------------------------------------------------------
      */
        if(shrink && H5D_CHUNKED == dset->shared->layout.type) {
            H5D_io_info_t io_info;              /* Dataset I/O info */
            H5D_dxpl_cache_t _dxpl_cache;       /* Data transfer property cache buffer */
            H5D_dxpl_cache_t *dxpl_cache=&_dxpl_cache;   /* Data transfer property cache */

            /* Fill the DXPL cache values for later use */
            if (H5D_get_dxpl_cache(dxpl_id,&dxpl_cache)<0)
                HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")

            /* Construct dataset I/O info */
            H5D_BUILD_IO_INFO(&io_info,dset,dxpl_cache,dxpl_id,NULL);

            /* Remove excess chunks */
            if(H5D_istore_prune_by_extent(&io_info) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to remove chunks ")

            /* Reset the elements outsize the new dimensions, but in existing chunks */
            if(H5D_istore_initialize_by_extent(&io_info) < 0)
                HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to initialize chunks ")
        } /* end if */
    } /* end if */

done:
    FUNC_LEAVE_NOAPI(ret_value)
}


/*-------------------------------------------------------------------------
 * Function:    H5D_flush
 *
 * Purpose:     Flush any dataset information cached in memory
 *
 * Return:	Success:	Non-negative
 *		Failure:	Negative
 *
 *
 * Programmer:  Ray Lu
 *
 * Date:        August 14, 2002
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5D_flush(const H5F_t *f, hid_t dxpl_id, unsigned flags)
{
    unsigned    num_dsets;      /* Number of datasets in file   */
    hid_t       *id_list=NULL;  /* list of dataset IDs          */
    H5D_t       *dataset=NULL;  /* Dataset pointer              */
    unsigned	u;              /* Index variable */
    herr_t      ret_value = SUCCEED;        /* Return value     */

    FUNC_ENTER_NOAPI(H5D_flush, FAIL)

    /* Check args */
    assert(f);

    /* Retrieve the # of outstanding dataset IDs */
    num_dsets=H5F_get_obj_count(f, H5F_OBJ_DATASET);

    /* Check for something to do */
    if(num_dsets>0) {
        H5_CHECK_OVERFLOW(num_dsets,unsigned,size_t);
        if(NULL==(id_list=H5MM_malloc((size_t)num_dsets*sizeof(hid_t))))
            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to allocate memory for ID list")
        if(H5F_get_obj_ids(f, H5F_OBJ_DATASET, -1, id_list) != num_dsets)
            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to get dataset ID list")
        for(u = 0; u < num_dsets; u++) {
            if(NULL==(dataset=H5I_object_verify(id_list[u], H5I_DATASET)))
                HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to get dataset object")

            /* Flush the raw data buffer, if we have a dirty one */
            if (dataset->shared->cache.contig.sieve_buf && dataset->shared->cache.contig.sieve_dirty) {
                assert(dataset->shared->layout.type!=H5D_COMPACT);      /* We should never have a sieve buffer for compact storage */

                /* Write dirty data sieve buffer to file */
                if (H5F_block_write(f, H5FD_MEM_DRAW, dataset->shared->cache.contig.sieve_loc,
                        dataset->shared->cache.contig.sieve_size, dxpl_id, dataset->shared->cache.contig.sieve_buf) < 0)
                    HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "block write failed")

                /* Reset sieve buffer dirty flag */
                dataset->shared->cache.contig.sieve_dirty=0;
            } /* end if */

            /* Flush cached information for each kind of dataset */
            switch(dataset->shared->layout.type) {
                case H5D_CONTIGUOUS:
                    break;

                case H5D_CHUNKED:
                    /* Flush the raw data cache */
                    if (H5D_istore_flush(dataset, dxpl_id, flags & H5F_FLUSH_INVALIDATE) < 0)
                        HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush raw data cache")
                    break;

                case H5D_COMPACT:
                    if(dataset->shared->layout.u.compact.dirty) {
                        if(H5O_modify(&(dataset->oloc), H5O_LAYOUT_ID, 0, 0, H5O_UPDATE_TIME, &(dataset->shared->layout), dxpl_id)<0)
                            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to update layout message")
                        dataset->shared->layout.u.compact.dirty = FALSE;
                    } /* end if */
                    break;

                default:
                    assert ("not implemented yet" && 0);
#ifdef NDEBUG
                    HGOTO_ERROR (H5E_IO, H5E_UNSUPPORTED, FAIL, "unsupported storage layout")
#endif /* NDEBUG */
            } /* end switch */ /*lint !e788 All appropriate cases are covered */

        }
    } /* end if */

done:
    if(id_list!=NULL)
        H5MM_xfree(id_list);
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_flush() */


/*-------------------------------------------------------------------------
 * Function:	H5Ddebug
 *
 * Purpose:	Prints various information about a dataset.  This function is
 *		not to be documented in the API at this time.
 *
 * Return:	Success:	Non-negative
 *
 *		Failure:	Negative
 *
 * Programmer:	Robb Matzke
 *              Wednesday, April 28, 1999
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Ddebug(hid_t dset_id)
{
    H5D_t	*dset = NULL;
    herr_t      ret_value = SUCCEED;      /* Return value */

    FUNC_ENTER_API(H5Ddebug, FAIL)
    H5TRACE1("e","i",dset_id);

    /* Check args */
    if(NULL == (dset = H5I_object_verify(dset_id, H5I_DATASET)))
	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")

    /* Print B-tree information */
    if(H5D_CHUNKED == dset->shared->layout.type)
	(void)H5D_istore_dump_btree(dset->oloc.file, H5AC_dxpl_id, stdout, dset->shared->layout.u.chunk.ndims, dset->shared->layout.u.chunk.addr);
    else if(H5D_CONTIGUOUS == dset->shared->layout.type)
	HDfprintf(stdout, "    %-10s %a\n", "Address:", dset->shared->layout.u.contig.addr);

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Ddebug() */