tcl.git - Tcl is a high-level, general-purpose, interpreted, dynamic programming language. It was designed with the goal of being very simple but powerful.

Tcl is a high-level, general-purpose, interpreted, dynamic programming language. It was designed with the goal of being very simple but powerful.

summary refs log tree commit diff stats

path: root/unix/tclUnixChan.c

diff options

author	jan.nijtmans <nijtmans@users.sourceforge.net>	2013-03-21 14:56:00 (GMT)
committer	jan.nijtmans <nijtmans@users.sourceforge.net>	2013-03-21 14:56:00 (GMT)
commit	b49107e5e323792c06ddde8bec11d840fa7b4ff2 (patch)
tree	e3182c8b689488da24da5d987a7b69322784c5e6 /unix/tclUnixChan.c
parent	23c7c728b03bf24002fde9d83f0211529388136a (diff)
download	tcl-b49107e5e323792c06ddde8bec11d840fa7b4ff2.zip tcl-b49107e5e323792c06ddde8bec11d840fa7b4ff2.tar.gz tcl-b49107e5e323792c06ddde8bec11d840fa7b4ff2.tar.bz2

Tcl 8.5 doesn't have [try]

Diffstat (limited to 'unix/tclUnixChan.c')

0 files changed, 0 insertions, 0 deletions

f='#n1045'>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 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678 5679 5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921 5922

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * 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 COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Purpose:     Tests the basic features of Virtual File Drivers
 */

#include "h5test.h"

#define KB            1024U
#define FAMILY_NUMBER 4
#define FAMILY_SIZE   (1 * KB)
#define FAMILY_SIZE2  (5 * KB)
#define MULTI_SIZE    128
#define SPLITTER_SIZE 8 /* dimensions of a dataset */

#define CORE_INCREMENT (4 * KB)
#define CORE_PAGE_SIZE (1024 * KB)
#define CORE_DSET_NAME "core dset"
#define CORE_DSET_DIM1 1024
#define CORE_DSET_DIM2 32

#define DSET1_NAME "dset1"
#define DSET1_DIM1 1024
#define DSET1_DIM2 32
#define DSET3_NAME "dset3"

/* Macros for Direct VFD */
#ifdef H5_HAVE_DIRECT
#define MBOUNDARY  512
#define FBSIZE     (4 * KB)
#define CBSIZE     (8 * KB)
#define THRESHOLD  1
#define DSET2_NAME "dset2"
#define DSET2_DIM  4
#endif /* H5_HAVE_DIRECT */

static const char *FILENAME[] = {"sec2_file",            /*0*/
                                 "core_file",            /*1*/
                                 "family_file",          /*2*/
                                 "new_family_v16",       /*3*/
                                 "multi_file",           /*4*/
                                 "direct_file",          /*5*/
                                 "log_file",             /*6*/
                                 "stdio_file",           /*7*/
                                 "windows_file",         /*8*/
                                 "new_multi_file_v16",   /*9*/
                                 "ro_s3_file",           /*10*/
                                 "splitter_rw_file",     /*11*/
                                 "splitter_wo_file",     /*12*/
                                 "splitter.log",         /*13*/
                                 "ctl_file",             /*14*/
                                 "ctl_splitter_wo_file", /*15*/
                                 NULL};

#define LOG_FILENAME "log_vfd_out.log"

#define COMPAT_BASENAME       "family_v16"
#define MULTI_COMPAT_BASENAME "multi_file_v16"
#define SPLITTER_DATASET_NAME "dataset"

/* Macro: HEXPRINT()
 * Helper macro to pretty-print hexadecimal output of a buffer of known size.
 * Each line has the address of the first printed byte, and four columns of
 * four-byte data.
 */
static int __k;
#define HEXPRINT(size, buf)                                                                                  \
    do {                                                                                                     \
        for (__k = 0; __k < (size); __k++) {                                                                 \
            if (__k % 16 == 0) {                                                                             \
                printf("\n%04x", __k);                                                                       \
            }                                                                                                \
            printf((__k % 4 == 0) ? "  %02X" : " %02X", (unsigned char)(buf)[__k]);                          \
        }                                                                                                    \
    } while (0) /* end #define HEXPRINT() */

/* Macro SET_SIZE()
 *
 * Helper macro to track the sizes of entries in a vector
 * I/O call when stepping through the vector incrementally.
 * Assuming that bool_size_fixed is initialized to false
 * before the scan, this macro will detect the sizes array
 * optimization for the case in which all remaining entries
 * are of the same size, and set size_value accordingly.
 *
 *                                   JRM -- 3/11/21
 */
#define SET_SIZE(bool_size_fixed, sizes_array, size_value, idx)                                              \
    do {                                                                                                     \
        if (!(bool_size_fixed)) {                                                                            \
                                                                                                             \
            if ((sizes_array)[idx] == 0) {                                                                   \
                                                                                                             \
                assert((idx) > 0);                                                                           \
                (bool_size_fixed) = true;                                                                    \
            }                                                                                                \
            else {                                                                                           \
                                                                                                             \
                (size_value) = (sizes_array)[idx];                                                           \
            }                                                                                                \
        }                                                                                                    \
    } while (false)

/* Macro SET_TYPE()
 *
 * Helper macro to track the types of entries in a vector
 * I/O call when stepping through the vector incrementally.
 * Assuming that bool_type_fixed is initialized to false
 * before the scan, this macro will detect the types array
 * optimization for the case in which all remaining entries
 * are of the same type, and set type_value accordingly.
 *
 *                                   JRM -- 3/11/21
 */
#define SET_TYPE(bool_type_fixed, types_array, type_value, idx)                                              \
    do {                                                                                                     \
        if (!(bool_type_fixed)) {                                                                            \
                                                                                                             \
            if ((types_array)[idx] == H5FD_MEM_NOLIST) {                                                     \
                                                                                                             \
                assert((idx) > 0);                                                                           \
                (bool_type_fixed) = true;                                                                    \
            }                                                                                                \
            else {                                                                                           \
                                                                                                             \
                (type_value) = (types_array)[idx];                                                           \
            }                                                                                                \
        }                                                                                                    \
    } while (false)

/* Helper structure to pass around dataset information.
 */
struct splitter_dataset_def {
    void          *buf;         /* contents of dataset */
    const char    *dset_name;   /* dataset name, always added to root group */
    hid_t          mem_type_id; /* datatype */
    const hsize_t *dims;        /* dimensions */
    int            n_dims;      /* rank */
};

/* Op code type enum for ctl callback test */
typedef enum {
    CTL_OPC_KNOWN_PASSTHROUGH, /* op code known to passthrough VFD */
    CTL_OPC_KNOWN_TERMINAL,    /* op code known to terminal VFD    */
    CTL_OPC_UNKNOWN            /* unknown op code                  */
} ctl_test_opc_type;

static int splitter_prepare_file_paths(H5FD_splitter_vfd_config_t *vfd_config, char *filename_rw_out);
static int splitter_create_single_file_at(const char *filename, hid_t fapl_id,
                                          const struct splitter_dataset_def *data);
static int splitter_compare_expected_data(hid_t file_id, const struct splitter_dataset_def *data);
static int run_splitter_test(const struct splitter_dataset_def *data, bool ignore_wo_errors,
                             bool provide_logfile_path, const hid_t sub_fapl_ids[2]);
static int splitter_RO_test(const struct splitter_dataset_def *data, hid_t child_fapl_id);
static int splitter_tentative_open_test(hid_t child_fapl_id);
static int file_exists(const char *filename, hid_t fapl_id);

static herr_t  run_ctl_test(uint64_t op_code, uint64_t flags, ctl_test_opc_type opc_type, hid_t fapl_id);
static H5FD_t *H5FD__ctl_test_vfd_open(const char *name, unsigned flags, hid_t fapl_id, haddr_t maxaddr);
static herr_t  H5FD__ctl_test_vfd_close(H5FD_t *_file);
static haddr_t H5FD__ctl_test_vfd_get_eoa(const H5FD_t *_file, H5FD_mem_t type);
static herr_t  H5FD__ctl_test_vfd_set_eoa(H5FD_t *_file, H5FD_mem_t type, haddr_t addr);
static haddr_t H5FD__ctl_test_vfd_get_eof(const H5FD_t *_file, H5FD_mem_t type);
static herr_t  H5FD__ctl_test_vfd_read(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr,
                                       size_t size, void *buf);
static herr_t  H5FD__ctl_test_vfd_write(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr,
                                        size_t size, const void *buf);
static herr_t  H5FD__ctl_test_vfd_ctl(H5FD_t *_file, uint64_t op_code, uint64_t flags, const void *input,
                                      void **output);

/*-------------------------------------------------------------------------
 * Function:    test_sec2
 *
 * Purpose:     Tests the file handle interface for SEC2 driver
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_sec2(void)
{
    hid_t         fid          = H5I_INVALID_HID; /* file ID                      */
    hid_t         fapl_id      = H5I_INVALID_HID; /* file access property list ID */
    hid_t         fapl_id_out  = H5I_INVALID_HID; /* from H5Fget_access_plist     */
    hid_t         driver_id    = H5I_INVALID_HID; /* ID for this VFD              */
    unsigned long driver_flags = 0;               /* VFD feature flags            */
    char          filename[1024];                 /* filename                     */
    void         *os_file_handle = NULL;          /* OS file handle               */
    hsize_t       file_size;                      /* file size                    */

    TESTING("SEC2 file driver");

    /* Set property list and file name for SEC2 driver. */
    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    if (H5Pset_fapl_sec2(fapl_id) < 0)
        TEST_ERROR;
    h5_fixname(FILENAME[0], fapl_id, filename, sizeof(filename));

    /* Check that the VFD feature flags are correct */
    if ((driver_id = H5Pget_driver(fapl_id)) < 0)
        TEST_ERROR;
    if (H5FDdriver_query(driver_id, &driver_flags) < 0)
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_ACCUMULATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_SMALLDATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_POSIX_COMPAT_HANDLE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_SUPPORTS_SWMR_IO))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DEFAULT_VFD_COMPATIBLE))
        TEST_ERROR;
    /* Check for extra flags not accounted for above */
    if (driver_flags != (H5FD_FEAT_AGGREGATE_METADATA | H5FD_FEAT_ACCUMULATE_METADATA | H5FD_FEAT_DATA_SIEVE |
                         H5FD_FEAT_AGGREGATE_SMALLDATA | H5FD_FEAT_POSIX_COMPAT_HANDLE |
                         H5FD_FEAT_SUPPORTS_SWMR_IO | H5FD_FEAT_DEFAULT_VFD_COMPATIBLE))
        TEST_ERROR;

    if ((fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id)) < 0)
        TEST_ERROR;

    /* Retrieve the access property list... */
    if ((fapl_id_out = H5Fget_access_plist(fid)) < 0)
        TEST_ERROR;

    /* Check that the driver is correct */
    if (H5FD_SEC2 != H5Pget_driver(fapl_id_out))
        TEST_ERROR;

    /* ...and close the property list */
    if (H5Pclose(fapl_id_out) < 0)
        TEST_ERROR;

    /* Check that we can get an operating-system-specific handle from
     * the library.
     */
    if (H5Fget_vfd_handle(fid, H5P_DEFAULT, &os_file_handle) < 0)
        TEST_ERROR;
    if (os_file_handle == NULL)
        FAIL_PUTS_ERROR("NULL os-specific vfd/file handle was returned from H5Fget_vfd_handle");

    /* There is no guarantee the size of metadata in file is constant.
     * Just try to check if it's reasonable.
     *
     * Currently it should be around 2 KB.
     */
    if (H5Fget_filesize(fid, &file_size) < 0)
        TEST_ERROR;
    if (file_size < 1 * KB || file_size > 4 * KB)
        FAIL_PUTS_ERROR("suspicious file size obtained from H5Fget_filesize");

    /* Close and delete the file */
    if (H5Fclose(fid) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[0], fapl_id);

    /* Close the fapl */
    if (H5Pclose(fapl_id) < 0)
        TEST_ERROR;

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(fapl_id);
        H5Pclose(fapl_id_out);
        H5Fclose(fid);
    }
    H5E_END_TRY
    return -1;
} /* end test_sec2() */

/*-------------------------------------------------------------------------
 * Function:    test_core
 *
 * Purpose:     Tests the file handle interface for CORE driver
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_core(void)
{
    hid_t         fid          = H5I_INVALID_HID; /* file ID                      */
    hid_t         fapl_id      = H5I_INVALID_HID; /* file access property list ID */
    hid_t         fapl_id_out  = H5I_INVALID_HID; /* from H5Fget_access_plist     */
    hid_t         driver_id    = H5I_INVALID_HID; /* ID for this VFD              */
    unsigned long driver_flags = 0;               /* VFD feature flags            */
    hid_t         did          = H5I_INVALID_HID; /* dataset ID                   */
    hid_t         sid          = H5I_INVALID_HID; /* dataspace ID                 */
    char          filename[1024];                 /* filename                     */
    void         *os_file_handle = NULL;          /* OS file handle               */
    hsize_t       file_size;                      /* file size                    */
    size_t        increment;                      /* core VFD increment           */
    bool          backing_store;                  /* use backing store?           */
    bool          use_write_tracking;             /* write tracking flag          */
    size_t        write_tracking_page_size;       /* write tracking page size     */
    int          *data_w = NULL;                  /* data written to the dataset  */
    int          *data_r = NULL;                  /* data read from the dataset   */
    int           val;                            /* data value                   */
    int          *pw = NULL, *pr = NULL;          /* pointers for iterating over
                                                     data arrays (write & read)   */
    hsize_t dims[2];                              /* dataspace dimensions         */
    int     i, j;                                 /* iterators                    */
    htri_t  status;                               /* return value from H5Lexists  */

    TESTING("CORE file driver");

    /* Get a file access property list and fix up the file name */
    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    h5_fixname(FILENAME[1], fapl_id, filename, sizeof(filename));

    /************************************************************************
     * Check that the backing store flag works by creating a file, close
     * it, and ensure that the file does not exist.
     ************************************************************************/

    /* Make sure it's not present at the start of the test */
    if (HDaccess(filename, F_OK) != -1)
        if (HDremove(filename) < 0)
            FAIL_PUTS_ERROR("unable to remove backing store file");

    /* Create and close file w/ backing store off */
    if (H5Pset_fapl_core(fapl_id, (size_t)CORE_INCREMENT, false) < 0)
        TEST_ERROR;

    /* Check that the VFD feature flags are correct.
     * Note that the H5FDdriver_query() API call does not require a file
     * so backing-store related flags will not be returned here.
     */
    if ((driver_id = H5Pget_driver(fapl_id)) < 0)
        TEST_ERROR;
    if (H5FDdriver_query(driver_id, &driver_flags) < 0)
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_ACCUMULATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_SMALLDATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_ALLOW_FILE_IMAGE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_CAN_USE_FILE_IMAGE_CALLBACKS))
        TEST_ERROR;
    /* Check for extra flags not accounted for above */
    if (driver_flags !=
        (H5FD_FEAT_AGGREGATE_METADATA | H5FD_FEAT_ACCUMULATE_METADATA | H5FD_FEAT_DATA_SIEVE |
         H5FD_FEAT_AGGREGATE_SMALLDATA | H5FD_FEAT_ALLOW_FILE_IMAGE | H5FD_FEAT_CAN_USE_FILE_IMAGE_CALLBACKS))
        TEST_ERROR;

    if ((fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id)) < 0)
        TEST_ERROR;
    if (H5Fclose(fid) < 0)
        TEST_ERROR;
    /* Check for the backing store file */
    if (HDaccess(filename, F_OK) != -1)
        FAIL_PUTS_ERROR("file created when backing store set to false");

    /************************************************************************
     * Check basic core VFD operation and properties. This is done with the
     * backing store on so a file will be created for later use.
     ************************************************************************/

    /* Turn the backing store on */
    if (H5Pset_fapl_core(fapl_id, (size_t)CORE_INCREMENT, true) < 0)
        TEST_ERROR;

    /* Check that write tracking is off by default and that the default
     * page size is non-zero.
     */
    if (H5Pget_core_write_tracking(fapl_id, &use_write_tracking, &write_tracking_page_size) < 0)
        TEST_ERROR;
    if (false != use_write_tracking)
        FAIL_PUTS_ERROR("write tracking should be off by default");
    if (0 == write_tracking_page_size)
        FAIL_PUTS_ERROR("write tracking page size should never be zero");

    /* Set core VFD properties */
    if (H5Pset_core_write_tracking(fapl_id, true, CORE_PAGE_SIZE) < 0)
        TEST_ERROR;

    /* Create the file */
    if ((fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id)) < 0)
        TEST_ERROR;

    /* Retrieve the access property list */
    if ((fapl_id_out = H5Fget_access_plist(fid)) < 0)
        TEST_ERROR;

    /* Check that the driver is correct */
    if (H5FD_CORE != H5Pget_driver(fapl_id_out))
        TEST_ERROR;

    /* Get the basic VFD properties from the fapl and ensure that
     * they are correct.
     */
    if (H5Pget_fapl_core(fapl_id_out, &increment, &backing_store) < 0)
        TEST_ERROR;
    if (increment != (size_t)CORE_INCREMENT)
        FAIL_PUTS_ERROR("incorrect increment from file fapl");
    if (backing_store != true)
        FAIL_PUTS_ERROR("incorrect backing store flag from file fapl");

    /* Check that the backing store write tracking info was saved */
    /* TODO: There is a bug where H5Fget_access_plist() does not return
     *       the write tracking properties. Until this bug is fixed, just
     *       test the main fapl_id.
     */
    if (H5Pget_core_write_tracking(fapl_id, &use_write_tracking, &write_tracking_page_size) < 0)
        TEST_ERROR;
    if (true != use_write_tracking)
        FAIL_PUTS_ERROR("write tracking flag incorrect in fapl obtained from H5Fget_access_plist");
    if (CORE_PAGE_SIZE != write_tracking_page_size)
        FAIL_PUTS_ERROR("write tracking page size incorrect in fapl obtained from H5Fget_access_plist");

    /* Close the property list */
    if (H5Pclose(fapl_id_out) < 0)
        TEST_ERROR;

    /* Check that we can get an operating-system-specific handle from
     * the library.
     */
    if (H5Fget_vfd_handle(fid, H5P_DEFAULT, &os_file_handle) < 0)
        TEST_ERROR;
    if (os_file_handle == NULL)
        FAIL_PUTS_ERROR("NULL os-specific vfd/file handle was returned from H5Fget_vfd_handle");

    /* There is no guarantee the size of metadata in file is constant.
     * Just try to check if it's reasonable.
     *
     * TODO: Needs justification of why is this is a reasonable size.
     */
    if (H5Fget_filesize(fid, &file_size) < 0)
        TEST_ERROR;
    if (file_size < 2 * KB || file_size > 6 * KB)
        FAIL_PUTS_ERROR("suspicious file size obtained from H5Fget_filesize");

    /* Close the file */
    if (H5Fclose(fid) < 0)
        TEST_ERROR;

    /************************************************************************
     * Make changes to the file with the backing store flag OFF to ensure
     * that they ARE NOT propagated.
     ************************************************************************/

    /* Open the file with backing store off for read and write.
     * Changes won't be saved in file.
     */
    if (H5Pset_fapl_core(fapl_id, (size_t)CORE_INCREMENT, false) < 0)
        TEST_ERROR;
    if ((fid = H5Fopen(filename, H5F_ACC_RDWR, fapl_id)) < 0)
        TEST_ERROR;

    /* Allocate memory for data set. */
    if (NULL == (data_w = (int *)malloc(DSET1_DIM1 * DSET1_DIM2 * sizeof(int))))
        FAIL_PUTS_ERROR("unable to allocate memory for input array");
    if (NULL == (data_r = (int *)malloc(DSET1_DIM1 * DSET1_DIM2 * sizeof(int))))
        FAIL_PUTS_ERROR("unable to allocate memory for output array");

    /* Initialize the buffers */
    val = 0;
    pw  = data_w;
    for (i = 0; i < CORE_DSET_DIM1; i++)
        for (j = 0; j < CORE_DSET_DIM2; j++)
            *pw++ = val++;
    memset(data_r, 0, DSET1_DIM1 * DSET1_DIM2 * sizeof(int));

    /* Create the dataspace */
    dims[0] = CORE_DSET_DIM1;
    dims[1] = CORE_DSET_DIM2;
    if ((sid = H5Screate_simple(2, dims, NULL)) < 0)
        TEST_ERROR;

    /* Create the dataset */
    if ((did = H5Dcreate2(fid, CORE_DSET_NAME, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) <
        0)
        TEST_ERROR;

    /* Write the data to the dataset */
    if (H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data_w) < 0)
        TEST_ERROR;

    /* Close and reopen the dataset */
    if (H5Dclose(did) < 0)
        TEST_ERROR;
    if ((did = H5Dopen2(fid, CORE_DSET_NAME, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    /* Read the data back from dset1 */
    if (H5Dread(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data_r) < 0)
        TEST_ERROR;

    /* Check that the values read are the same as the values written */
    pw = data_w;
    pr = data_r;
    for (i = 0; i < CORE_DSET_DIM1; i++)
        for (j = 0; j < CORE_DSET_DIM2; j++)
            if (*pr++ != *pw++) {
                H5_FAILED();
                printf("    Read different values than written in data set.\n");
                printf("    At index %d,%d\n", i, j);
                TEST_ERROR;
            } /* end if */

    /* Close everything except the dataspace ID (needed below)*/
    if (H5Dclose(did) < 0)
        TEST_ERROR;
    if (H5Fclose(fid) < 0)
        TEST_ERROR;

    /* Reopen the file and ensure that the dataset does not exist */
    if ((fid = H5Fopen(filename, H5F_ACC_RDWR, fapl_id)) < 0)
        TEST_ERROR;
    status = H5Lexists(fid, CORE_DSET_NAME, H5P_DEFAULT);
    if (status < 0)
        TEST_ERROR;
    if (status > 0)
        FAIL_PUTS_ERROR("core VFD dataset created in file when backing store disabled");

    /* Close the file */
    if (H5Fclose(fid) < 0)
        TEST_ERROR;

    /************************************************************************
     * Make changes to the file with the backing store flag ON to ensure
     * that they ARE propagated.
     ************************************************************************/

    /* Open the file with backing store on for read and write.
     * Changes will be saved in file.
     */
    if (H5Pset_fapl_core(fapl_id, (size_t)CORE_INCREMENT, true) < 0)
        TEST_ERROR;
    if ((fid = H5Fopen(filename, H5F_ACC_RDWR, fapl_id)) < 0)
        TEST_ERROR;

    /* Create the dataset */
    if ((did = H5Dcreate2(fid, CORE_DSET_NAME, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) <
        0)
        TEST_ERROR;

    /* Write the data to the dataset */
    if (H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data_w) < 0)
        TEST_ERROR;

    /* Close everything and reopen */
    if (H5Dclose(did) < 0)
        TEST_ERROR;
    if (H5Fclose(fid) < 0)
        TEST_ERROR;
    if ((fid = H5Fopen(filename, H5F_ACC_RDWR, fapl_id)) < 0)
        TEST_ERROR;
    if ((did = H5Dopen2(fid, CORE_DSET_NAME, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    /* Read the data back from the dataset */
    memset(data_r, 0, DSET1_DIM1 * DSET1_DIM2 * sizeof(int));
    if (H5Dread(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data_r) < 0)
        TEST_ERROR;

    /* Check that the values read are the same as the values written */
    pw = data_w;
    pr = data_r;
    for (i = 0; i < CORE_DSET_DIM1; i++)
        for (j = 0; j < CORE_DSET_DIM2; j++)
            if (*pw++ != *pr++) {
                H5_FAILED();
                printf("    Read different values than written in data set.\n");
                printf("    At index %d,%d\n", i, j);
                TEST_ERROR;
            } /* end if */

    /* Check file size API.
     * There is no guarantee the size of metadata in file is constant.
     * Just try to check if it's reasonable.
     *
     * TODO: Needs justification of why is this is a reasonable size.
     */
    if (H5Fget_filesize(fid, &file_size) < 0)
        TEST_ERROR;
    if (file_size < 64 * KB || file_size > 256 * KB)
        FAIL_PUTS_ERROR("suspicious file size obtained from H5Fget_filesize");

    /* Close everything */
    if (H5Sclose(sid) < 0)
        TEST_ERROR;
    if (H5Dclose(did) < 0)
        TEST_ERROR;

    free(data_w);
    free(data_r);

    /* Close and delete the file */
    if (H5Fclose(fid) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[1], fapl_id);

    /************************************************************************
     * Check that delete behavior works correctly
     ************************************************************************/

    /* Create and close a file */
    if (H5Pset_fapl_core(fapl_id, (size_t)CORE_INCREMENT, true) < 0)
        TEST_ERROR;
    if ((fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id)) < 0)
        TEST_ERROR;
    if (H5Fclose(fid) < 0)
        TEST_ERROR;

    /* Try to delete the file with the backing store off (shouldn't delete anything) */
    if (H5Pset_fapl_core(fapl_id, (size_t)CORE_INCREMENT, false) < 0)
        TEST_ERROR;
    if (H5Fdelete(filename, fapl_id) < 0)
        TEST_ERROR;
    if (-1 == HDaccess(filename, F_OK))
        FAIL_PUTS_ERROR("file deleted when backing store set to false");

    /* Try to delete the file with the backing store on (should work) */
    if (H5Pset_fapl_core(fapl_id, (size_t)CORE_INCREMENT, true) < 0)
        TEST_ERROR;
    if (H5Fdelete(filename, fapl_id) < 0)
        TEST_ERROR;
    if (0 == HDaccess(filename, F_OK))
        FAIL_PUTS_ERROR("file not deleted when backing store set to true");

    /************************************************************************
     * Clean up
     ************************************************************************/

    /* Close the fapl */
    if (H5Pclose(fapl_id) < 0)
        TEST_ERROR;

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Sclose(sid);
        H5Dclose(did);
        H5Pclose(fapl_id_out);
        H5Pclose(fapl_id);
        H5Fclose(fid);
    }
    H5E_END_TRY

    if (data_w)
        free(data_w);
    if (data_r)
        free(data_r);

    return -1;
} /* end test_core() */

/*-------------------------------------------------------------------------
 * Function:    test_direct
 *
 * Purpose:     Tests the file handle interface for DIRECT I/O driver
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_direct(void)
{
#ifdef H5_HAVE_DIRECT
    hid_t file = H5I_INVALID_HID, fapl = H5I_INVALID_HID, access_fapl = H5I_INVALID_HID;
    hid_t dset1 = H5I_INVALID_HID, dset2 = H5I_INVALID_HID, space1 = H5I_INVALID_HID,
          space2 = H5I_INVALID_HID;
    char    filename[1024];
    int    *fhandle = NULL;
    hsize_t file_size;
    hsize_t dims1[2], dims2[1];
    size_t  mbound;
    size_t  fbsize;
    size_t  cbsize;
    void   *proto_points = NULL, *proto_check = NULL;
    int    *points = NULL, *check = NULL, *p1 = NULL, *p2 = NULL;
    int     wdata2[DSET2_DIM] = {11, 12, 13, 14};
    int     rdata2[DSET2_DIM];
    int     i, j, n;
#endif /*H5_HAVE_DIRECT*/

    TESTING("DIRECT I/O file driver");

#ifndef H5_HAVE_DIRECT
    SKIPPED();
    return 0;
#else  /*H5_HAVE_DIRECT*/

    /* Set property list and file name for Direct driver.  Set memory alignment boundary
     * and file block size to 512 which is the minimum for Linux 2.6. */
    if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    if (H5Pset_fapl_direct(fapl, MBOUNDARY, FBSIZE, CBSIZE) < 0)
        TEST_ERROR;
    h5_fixname(FILENAME[5], fapl, filename, sizeof filename);

    /* Verify the file access properties */
    if (H5Pget_fapl_direct(fapl, &mbound, &fbsize, &cbsize) < 0)
        TEST_ERROR;
    if (mbound != MBOUNDARY || fbsize != FBSIZE || cbsize != CBSIZE)
        TEST_ERROR;

    if (H5Pset_alignment(fapl, (hsize_t)THRESHOLD, (hsize_t)FBSIZE) < 0)
        TEST_ERROR;

    H5E_BEGIN_TRY
    {
        file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
    }
    H5E_END_TRY
    if (file < 0) {
        H5Pclose(fapl);
        SKIPPED();
        printf("  Probably the file system doesn't support Direct I/O\n");
        return 0;
    }

    /* Retrieve the access property list... */
    if ((access_fapl = H5Fget_access_plist(file)) < 0)
        TEST_ERROR;

    /* Check that the driver is correct */
    if (H5FD_DIRECT != H5Pget_driver(access_fapl))
        TEST_ERROR;

    /* ...and close the property list */
    if (H5Pclose(access_fapl) < 0)
        TEST_ERROR;

    /* Check file handle API */
    if (H5Fget_vfd_handle(file, H5P_DEFAULT, (void **)&fhandle) < 0)
        TEST_ERROR;
    if (*fhandle < 0)
        TEST_ERROR;

    /* Check file size API */
    if (H5Fget_filesize(file, &file_size) < 0)
        TEST_ERROR;

    /* There is no guarantee of the number of metadata allocations, but it's
     * 4 currently and the size of the file should be between 3 & 4 file buffer
     * sizes..
     */
    if (file_size < (FBSIZE * 3) || file_size >= (FBSIZE * 4))
        TEST_ERROR;

    /* Allocate aligned memory for data set 1. For data set 1, everything is aligned including
     * memory address, size of data, and file address. */
    if (0 != posix_memalign(&proto_points, (size_t)FBSIZE, (size_t)(DSET1_DIM1 * DSET1_DIM2 * sizeof(int))))
        TEST_ERROR;
    points = proto_points;
    if (0 != posix_memalign(&proto_check, (size_t)FBSIZE, (size_t)(DSET1_DIM1 * DSET1_DIM2 * sizeof(int))))
        TEST_ERROR;
    check = proto_check;

    /* Initialize the dset1 */
    p1 = points;
    for (i = n = 0; i < DSET1_DIM1; i++)
        for (j = 0; j < DSET1_DIM2; j++)
            *p1++ = n++;

    /* Create the data space1 */
    dims1[0] = DSET1_DIM1;
    dims1[1] = DSET1_DIM2;
    if ((space1 = H5Screate_simple(2, dims1, NULL)) < 0)
        TEST_ERROR;

    /* Create the dset1 */
    if ((dset1 =
             H5Dcreate2(file, DSET1_NAME, H5T_NATIVE_INT, space1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    /* Write the data to the dset1 */
    if (H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, points) < 0)
        TEST_ERROR;

    if (H5Dclose(dset1) < 0)
        TEST_ERROR;

    if ((dset1 = H5Dopen2(file, DSET1_NAME, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    /* Read the data back from dset1 */
    if (H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, check) < 0)
        TEST_ERROR;

    /* Check that the values read are the same as the values written */
    p1 = points;
    p2 = check;
    for (i = 0; i < DSET1_DIM1; i++)
        for (j = 0; j < DSET1_DIM2; j++)
            if (*p1++ != *p2++) {
                H5_FAILED();
                printf("    Read different values than written in data set 1.\n");
                printf("    At index %d,%d\n", i, j);
                TEST_ERROR;
            } /* end if */

    /* Create the data space2. For data set 2, memory address and data size are not aligned. */
    dims2[0] = DSET2_DIM;
    if ((space2 = H5Screate_simple(1, dims2, NULL)) < 0)
        TEST_ERROR;

    /* Create the dset2 */
    if ((dset2 =
             H5Dcreate2(file, DSET2_NAME, H5T_NATIVE_INT, space2, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    /* Write the data to the dset1 */
    if (H5Dwrite(dset2, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata2) < 0)
        TEST_ERROR;

    if (H5Dclose(dset2) < 0)
        TEST_ERROR;

    if ((dset2 = H5Dopen2(file, DSET2_NAME, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    /* Read the data back from dset1 */
    if (H5Dread(dset2, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata2) < 0)
        TEST_ERROR;

    /* Check that the values read are the same as the values written */
    for (i = 0; i < DSET2_DIM; i++)
        if (wdata2[i] != rdata2[i]) {
            H5_FAILED();
            printf("    Read different values than written in data set 2.\n");
            printf("    At index %d\n", i);
            TEST_ERROR;
        } /* end if */

    if (H5Sclose(space1) < 0)
        TEST_ERROR;
    if (H5Dclose(dset1) < 0)
        TEST_ERROR;
    if (H5Sclose(space2) < 0)
        TEST_ERROR;
    if (H5Dclose(dset2) < 0)
        TEST_ERROR;

    free(points);
    free(check);

    /* Close and delete the file */
    if (H5Fclose(file) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[5], fapl);

    /* Close the fapl */
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(fapl);
        H5Sclose(space1);
        H5Dclose(dset1);
        H5Sclose(space2);
        H5Dclose(dset2);
        H5Fclose(file);
    }
    H5E_END_TRY

    if (proto_points)
        free(proto_points);
    if (proto_check)
        free(proto_check);

    return -1;
#endif /*H5_HAVE_DIRECT*/
}

/*-------------------------------------------------------------------------
 * Function:    test_family_opens
 *
 * Purpose:     Private function for test_family() to tests wrong ways of
 *              reopening family file.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
/* Disable warning for "format not a string literal" here -QAK */
/*
 *      This pragma only needs to surround the snprintf() calls with
 *      'first_name' in the code below, but early (4.4.7, at least) gcc only
 *      allows diagnostic pragmas to be toggled outside of functions.
 */
H5_GCC_CLANG_DIAG_OFF("format-nonliteral")
static herr_t
test_family_opens(char *fname, hid_t fa_pl)
{
    hid_t file = H5I_INVALID_HID;
    char  first_name[1024];
    char  wrong_name[1024];
    int   i;

    /* Case 1: reopen file with 1st member file name and default property list */
    HDsnprintf(first_name, sizeof(first_name), fname, 0);

    H5E_BEGIN_TRY
    {
        file = H5Fopen(first_name, H5F_ACC_RDWR, H5P_DEFAULT);
    }
    H5E_END_TRY
    if (file >= 0)
        TEST_ERROR;

    /* Case 2: reopen file with correct name template but default property list */
    H5E_BEGIN_TRY
    {
        file = H5Fopen(fname, H5F_ACC_RDWR, H5P_DEFAULT);
    }
    H5E_END_TRY
    if (file >= 0)
        TEST_ERROR;

    /* Case 3: reopen file with wrong member size */
    if (H5Pset_fapl_family(fa_pl, (hsize_t)128, H5P_DEFAULT) < 0)
        TEST_ERROR;

    H5E_BEGIN_TRY
    {
        file = H5Fopen(fname, H5F_ACC_RDWR, fa_pl);
    }
    H5E_END_TRY
    if (file >= 0)
        TEST_ERROR;

    /* Case 4: reopen file with wrong name template */
    HDstrcpy(wrong_name, fname);
    for (i = 0; i < 1024; i++)
        if (wrong_name[i] == '5') {
            wrong_name[i] = '4';
            break;
        }

    if (H5Pset_fapl_family(fa_pl, (hsize_t)FAMILY_SIZE, H5P_DEFAULT) < 0)
        TEST_ERROR;

    H5E_BEGIN_TRY
    {
        file = H5Fopen(wrong_name, H5F_ACC_RDWR, fa_pl);
    }
    H5E_END_TRY
    if (file >= 0)
        TEST_ERROR;

    return 0;

error:
    return -1;
} /* end test_family_opens() */
H5_GCC_CLANG_DIAG_ON("format-nonliteral")

/*-------------------------------------------------------------------------
 * Function:    test_family
 *
 * Purpose:     Tests the file handle interface for FAMILY driver
 *
 * Return:      SUCCEED/FAIL
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_family(void)
{
    hid_t file = H5I_INVALID_HID, fapl = H5I_INVALID_HID, fapl2 = H5I_INVALID_HID, space = H5I_INVALID_HID,
          dset                 = H5I_INVALID_HID;
    hid_t         access_fapl  = H5I_INVALID_HID;
    hid_t         driver_id    = H5I_INVALID_HID; /* ID for this VFD              */
    unsigned long driver_flags = 0;               /* VFD feature flags            */
    char          filename[1024];
    char          dname[] = "dataset";
    unsigned int  i, j;
    int          *fhandle = NULL, *fhandle2 = NULL;
    int         **buf      = NULL;
    int          *buf_data = NULL;
    hsize_t       dims[2]  = {FAMILY_NUMBER, FAMILY_SIZE};
    hsize_t       file_size;

    TESTING("FAMILY file driver");

    /* Set up data array */
    if (NULL == (buf_data = (int *)calloc(FAMILY_NUMBER * FAMILY_SIZE, sizeof(int))))
        TEST_ERROR;
    if (NULL == (buf = (int **)calloc(FAMILY_NUMBER, sizeof(buf_data))))
        TEST_ERROR;
    for (i = 0; i < FAMILY_NUMBER; i++)
        buf[i] = buf_data + (i * FAMILY_SIZE);

    /* Set property list and file name for FAMILY driver */
    if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    if (H5Pset_fapl_family(fapl, (hsize_t)FAMILY_SIZE, H5P_DEFAULT) < 0)
        TEST_ERROR;
    h5_fixname(FILENAME[2], fapl, filename, sizeof(filename));

    /* Check that the VFD feature flags are correct */
    if ((driver_id = H5Pget_driver(fapl)) < 0)
        TEST_ERROR;
    if (H5FDdriver_query(driver_id, &driver_flags) < 0)
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_ACCUMULATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_SMALLDATA))
        TEST_ERROR;
    /* Check for extra flags not accounted for above */
    if (driver_flags != (H5FD_FEAT_AGGREGATE_METADATA | H5FD_FEAT_ACCUMULATE_METADATA | H5FD_FEAT_DATA_SIEVE |
                         H5FD_FEAT_AGGREGATE_SMALLDATA))
        TEST_ERROR;

    if ((file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl)) < 0)
        TEST_ERROR;

    if (H5Fclose(file) < 0)
        TEST_ERROR;

    /* Test different wrong ways to reopen family files where there's only
     * one member file existing. */
    if (test_family_opens(filename, fapl) < 0)
        TEST_ERROR;

    /* Reopen the file with default member file size */
    if (H5Pset_fapl_family(fapl, (hsize_t)H5F_FAMILY_DEFAULT, H5P_DEFAULT) < 0)
        TEST_ERROR;

    if ((file = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
        TEST_ERROR;

    /* Check file size API */
    if (H5Fget_filesize(file, &file_size) < 0)
        TEST_ERROR;

    /* The file size is supposed to be about 800 bytes right now. */
    if (file_size < (KB / 2) || file_size > KB)
        TEST_ERROR;

    /* Create and write dataset */
    if ((space = H5Screate_simple(2, dims, NULL)) < 0)
        TEST_ERROR;

    /* Retrieve the access property list... */
    if ((access_fapl = H5Fget_access_plist(file)) < 0)
        TEST_ERROR;

    /* Check that the driver is correct */
    if (H5FD_FAMILY != H5Pget_driver(access_fapl))
        TEST_ERROR;

    /* ...and close the property list */
    if (H5Pclose(access_fapl) < 0)
        TEST_ERROR;

    if ((dset = H5Dcreate2(file, dname, H5T_NATIVE_INT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    for (i = 0; i < FAMILY_NUMBER; i++)
        for (j = 0; j < FAMILY_SIZE; j++)
            buf[i][j] = (int)((i * 10000) + j);

    if (H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf_data) < 0)
        TEST_ERROR;

    /* check file handle API */
    if ((fapl2 = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    if (H5Pset_family_offset(fapl2, (hsize_t)0) < 0)
        TEST_ERROR;

    if (H5Fget_vfd_handle(file, fapl2, (void **)&fhandle) < 0)
        TEST_ERROR;
    if (*fhandle < 0)
        TEST_ERROR;

    if (H5Pset_family_offset(fapl2, (hsize_t)(FAMILY_SIZE * 2)) < 0)
        TEST_ERROR;
    if (H5Fget_vfd_handle(file, fapl2, (void **)&fhandle2) < 0)
        TEST_ERROR;
    if (*fhandle2 < 0)
        TEST_ERROR;

    /* Check file size API */
    if (H5Fget_filesize(file, &file_size) < 0)
        TEST_ERROR;

        /* Some data has been written.  The file size should be bigger (18KB+976)
         * bytes if int size is 4 bytes) now. */
#if H5_SIZEOF_INT <= 4
    if (file_size < (18 * KB) || file_size > (20 * KB))
        TEST_ERROR;
#elif H5_SIZEOF_INT >= 8
    if (file_size < (32 * KB) || file_size > (40 * KB))
        TEST_ERROR;
#endif

    if (H5Sclose(space) < 0)
        TEST_ERROR;
    if (H5Dclose(dset) < 0)
        TEST_ERROR;
    if (H5Pclose(fapl2) < 0)
        TEST_ERROR;
    if (H5Fclose(file) < 0)
        TEST_ERROR;

    /* Test different wrong ways to reopen family files when there're multiple
     * member files existing. */
    if (test_family_opens(filename, fapl) < 0)
        TEST_ERROR;

    /* Reopen the file with correct member file size. */
    if (H5Pset_fapl_family(fapl, (hsize_t)FAMILY_SIZE, H5P_DEFAULT) < 0)
        TEST_ERROR;

    if ((file = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
        TEST_ERROR;

    /* Close and delete the file */
    if (H5Fclose(file) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[2], fapl);

    /* Close the fapl */
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    free(buf);
    free(buf_data);

    PASSED();
    return SUCCEED;

error:
    H5E_BEGIN_TRY
    {
        H5Sclose(space);
        H5Dclose(dset);
        H5Pclose(fapl);
        H5Pclose(fapl2);
        H5Fclose(file);
    }
    H5E_END_TRY

    free(buf);
    free(buf_data);

    return FAIL;
} /* end test_family() */

/*-------------------------------------------------------------------------
 * Function:    test_family_compat
 *
 * Purpose:     Tests the backward compatibility for FAMILY driver.
 *              See if we can open files created with v1.6 library.
 *              The source file was created by the test/file_handle.c
 *              of the v1.6 library.  Then tools/misc/h5repart.c was
 *              used to concatenated.  The command was "h5repart -m 5k
 *              family_file%05d.h5 family_v16_%05d.h5".
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
/* Disable warning for "format not a string literal" here -QAK */
/*
 *      This pragma only needs to surround the snprintf() calls with
 *      'newname_individual', etc. in the code below, but early (4.4.7, at least) gcc only
 *      allows diagnostic pragmas to be toggled outside of functions.
 */
H5_GCC_CLANG_DIAG_OFF("format-nonliteral")
static herr_t
test_family_compat(void)
{
    hid_t file = H5I_INVALID_HID, fapl = H5I_INVALID_HID;
    hid_t dset    = H5I_INVALID_HID;
    char  dname[] = "dataset";
    char  filename[1024];
    char  pathname[1024], pathname_individual[1024];
    char  newname[1024], newname_individual[1024];
    int   counter = 0;

    TESTING("FAMILY file driver backward compatibility");

    /* Set property list and file name for FAMILY driver */
    if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    if (H5Pset_fapl_family(fapl, (hsize_t)FAMILY_SIZE2, H5P_DEFAULT) < 0)
        TEST_ERROR;

    h5_fixname(COMPAT_BASENAME, fapl, filename, sizeof(filename));
    h5_fixname(FILENAME[3], fapl, newname, sizeof(newname));

    pathname[0] = '\0';
    HDstrcat(pathname, filename);

    /* The following code makes the copies of the family files in the source directory.
     * Since we're going to open the files with write mode, this protects the original
     * files.
     */
    HDsnprintf(newname_individual, sizeof(newname_individual), newname, counter);
    HDsnprintf(pathname_individual, sizeof(pathname_individual), pathname, counter);

    while (h5_make_local_copy(pathname_individual, newname_individual) >= 0) {
        counter++;
        HDsnprintf(newname_individual, sizeof(newname_individual), newname, counter);
        HDsnprintf(pathname_individual, sizeof(pathname_individual), pathname, counter);
    } /* end while */

    /* Make sure we can open the file.  Use the read and write mode to flush the
     * superblock. */
    if ((file = H5Fopen(newname, H5F_ACC_RDWR, fapl)) < 0)
        TEST_ERROR;

    if ((dset = H5Dopen2(file, dname, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    if (H5Dclose(dset) < 0)
        TEST_ERROR;

    if (H5Fclose(file) < 0)
        TEST_ERROR;

    /* Open the file again to make sure it isn't corrupted. */
    if ((file = H5Fopen(newname, H5F_ACC_RDWR, fapl)) < 0)
        TEST_ERROR;

    if ((dset = H5Dopen2(file, dname, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    if (H5Dclose(dset) < 0)
        TEST_ERROR;

    /* Close and delete the file */
    if (H5Fclose(file) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[3], fapl);

    /* Close the fapl */
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    PASSED();

    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Fclose(file);
        H5Pclose(fapl);
    }
    H5E_END_TRY

    return -1;
} /* end test_family_compat() */
H5_GCC_CLANG_DIAG_ON("format-nonliteral")

/*-------------------------------------------------------------------------
 * Function:    test_family_member_fapl
 *
 * Purpose:     Actually use the member fapl input to the member vfd.
 *
 * Return:      SUCCEED/FAIL
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_family_member_fapl(void)
{
    hid_t    file         = H5I_INVALID_HID;
    hid_t    fapl_id      = H5I_INVALID_HID;
    hid_t    memb_fapl_id = H5I_INVALID_HID;
    hid_t    space        = H5I_INVALID_HID;
    hid_t    dset         = H5I_INVALID_HID;
    char     filename[1024];
    char     dname[]  = "dataset";
    unsigned i        = 0;
    unsigned j        = 0;
    int    **buf      = NULL;
    int     *buf_data = NULL;
    hsize_t  dims[2]  = {FAMILY_NUMBER, FAMILY_SIZE};

    TESTING("Family member FAPL");

    /* Set up data array */
    if (NULL == (buf_data = (int *)calloc(FAMILY_NUMBER * FAMILY_SIZE, sizeof(int))))
        TEST_ERROR;
    if (NULL == (buf = (int **)calloc(FAMILY_NUMBER, sizeof(buf_data))))
        TEST_ERROR;
    for (i = 0; i < FAMILY_NUMBER; i++)
        buf[i] = buf_data + (i * FAMILY_SIZE);

    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) == H5I_INVALID_HID)
        TEST_ERROR;

    if ((memb_fapl_id = H5Pcreate(H5P_FILE_ACCESS)) == H5I_INVALID_HID)
        TEST_ERROR;

    if (H5Pset_fapl_sec2(memb_fapl_id) == FAIL)
        TEST_ERROR;
    if (H5Pset_fapl_family(fapl_id, (hsize_t)FAMILY_SIZE, memb_fapl_id) == FAIL)
        TEST_ERROR;

    h5_fixname(FILENAME[2], fapl_id, filename, sizeof(filename));

    if ((file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id)) == H5I_INVALID_HID)
        TEST_ERROR;

    if ((space = H5Screate_simple(2, dims, NULL)) == H5I_INVALID_HID)
        TEST_ERROR;

    /* Create and write to dataset, then close file.
     */
    if ((dset = H5Dcreate2(file, dname, H5T_NATIVE_INT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) ==
        H5I_INVALID_HID)
        TEST_ERROR;

    for (i = 0; i < FAMILY_NUMBER; i++) {
        for (j = 0; j < FAMILY_SIZE; j++) {
            buf[i][j] = (int)((i * 10000) + j);
        }
    }

    if (H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf_data) == FAIL)
        TEST_ERROR;

    if (H5Dclose(dset) == FAIL)
        TEST_ERROR;
    if (H5Sclose(space) == FAIL)
        TEST_ERROR;
    if (H5Fclose(file) == FAIL)
        TEST_ERROR;

    /* "Close" member FAPL at top level and re-open file.
     * Should succeed, with library managing reference count properly
     */
    if (H5Pclose(memb_fapl_id) == FAIL)
        TEST_ERROR;

    if ((file = H5Fopen(filename, H5F_ACC_RDWR, fapl_id)) == H5I_INVALID_HID)
        TEST_ERROR;

    if (H5Fclose(file) == FAIL)
        TEST_ERROR;

    h5_delete_test_file(FILENAME[2], fapl_id);

    if (H5Pclose(fapl_id) == FAIL)
        TEST_ERROR;

    free(buf);
    free(buf_data);

    PASSED();
    return SUCCEED;

error:
    H5E_BEGIN_TRY
    {
        H5Sclose(space);
        H5Dclose(dset);
        H5Pclose(memb_fapl_id);
        H5Pclose(fapl_id);
        H5Fclose(file);
    }
    H5E_END_TRY

    free(buf);
    free(buf_data);

    return FAIL;
} /* end test_family_member_fapl() */

/*-------------------------------------------------------------------------
 * Function:    test_multi_opens
 *
 * Purpose:     Private function for test_multi() to tests wrong ways of
 *              reopening multi file.
 *
 * Return:      SUCCEED/FAIL
 *
 *-------------------------------------------------------------------------
 */
/* Disable warning for "format not a string literal" here -QAK */
/*
 *      This pragma only needs to surround the snprintf() calls with
 *      'sf_name' in the code below, but early (4.4.7, at least) gcc only
 *      allows diagnostic pragmas to be toggled outside of functions.
 */
H5_GCC_CLANG_DIAG_OFF("format-nonliteral")
static herr_t
test_multi_opens(char *fname)
{
    hid_t fid = H5I_INVALID_HID;
    char  super_name[1024]; /*name string "%%s-s.h5"*/
    char  sf_name[1024];    /*name string "multi_file-s.h5"*/

    /* Case: reopen with the name of super file and default property list */
    HDsnprintf(super_name, sizeof(super_name), "%%s-%c.h5", 's');
    HDsnprintf(sf_name, sizeof(sf_name), super_name, fname);

    H5E_BEGIN_TRY
    {
        fid = H5Fopen(sf_name, H5F_ACC_RDWR, H5P_DEFAULT);
    }
    H5E_END_TRY

    return (fid >= 0 ? FAIL : SUCCEED);
} /* end test_multi_opens() */
H5_GCC_CLANG_DIAG_ON("format-nonliteral")

/*-------------------------------------------------------------------------
 * Function:    test_multi
 *
 * Purpose:     Tests the file handle interface for MULTI driver
 *
 * Return:      SUCCEED/FAIL
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_multi(void)
{
    hid_t file = H5I_INVALID_HID, fapl = H5I_INVALID_HID, fapl2 = H5I_INVALID_HID, dset = H5I_INVALID_HID,
          space = H5I_INVALID_HID;
    hid_t root = H5I_INVALID_HID, attr = H5I_INVALID_HID, aspace = H5I_INVALID_HID, atype = H5I_INVALID_HID;
    hid_t access_fapl          = H5I_INVALID_HID;
    hid_t driver_id            = H5I_INVALID_HID; /* ID for this VFD              */
    unsigned long driver_flags = 0;               /* VFD feature flags            */
    char          filename[1024];
    int          *fhandle2 = NULL, *fhandle = NULL;
    hsize_t       file_size;
    H5FD_mem_t    mt, memb_map[H5FD_MEM_NTYPES];
    hid_t         memb_fapl[H5FD_MEM_NTYPES];
    haddr_t       memb_addr[H5FD_MEM_NTYPES];
    const char   *memb_name[H5FD_MEM_NTYPES];
    char          sv[H5FD_MEM_NTYPES][32];
    hsize_t       dims[2]  = {MULTI_SIZE, MULTI_SIZE};
    hsize_t       adims[1] = {1};
    char          dname[]  = "dataset";
    char          meta[]   = "this is some metadata on this file";
    int           i, j;
    int         **buf      = NULL;
    int          *buf_data = NULL;

    TESTING("MULTI file driver");

    /* Set up data array */
    if (NULL == (buf_data = (int *)calloc(MULTI_SIZE * MULTI_SIZE, sizeof(int))))
        TEST_ERROR;
    if (NULL == (buf = (int **)calloc(MULTI_SIZE, sizeof(buf_data))))
        TEST_ERROR;
    for (i = 0; i < MULTI_SIZE; i++)
        buf[i] = buf_data + (i * MULTI_SIZE);

    /* Set file access property list for MULTI driver */
    if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;

    memset(memb_map, 0, sizeof(memb_map));
    memset(memb_fapl, 0, sizeof(memb_fapl));
    memset(memb_name, 0, sizeof(memb_name));
    memset(memb_addr, 0, sizeof(memb_addr));
    memset(sv, 0, sizeof(sv));

    for (mt = H5FD_MEM_DEFAULT; mt < H5FD_MEM_NTYPES; mt++) {
        memb_fapl[mt] = H5P_DEFAULT;
        memb_map[mt]  = H5FD_MEM_SUPER;
    }
    memb_map[H5FD_MEM_DRAW]  = H5FD_MEM_DRAW;
    memb_map[H5FD_MEM_BTREE] = H5FD_MEM_BTREE;
    memb_map[H5FD_MEM_GHEAP] = H5FD_MEM_GHEAP;

    HDsnprintf(sv[H5FD_MEM_SUPER], 32, "%%s-%c.h5", 's');
    memb_name[H5FD_MEM_SUPER] = sv[H5FD_MEM_SUPER];
    memb_addr[H5FD_MEM_SUPER] = 0;

    HDsnprintf(sv[H5FD_MEM_BTREE], 32, "%%s-%c.h5", 'b');
    memb_name[H5FD_MEM_BTREE] = sv[H5FD_MEM_BTREE];
    memb_addr[H5FD_MEM_BTREE] = HADDR_MAX / 4;

    HDsnprintf(sv[H5FD_MEM_DRAW], 32, "%%s-%c.h5", 'r');
    memb_name[H5FD_MEM_DRAW] = sv[H5FD_MEM_DRAW];
    memb_addr[H5FD_MEM_DRAW] = HADDR_MAX / 2;

    HDsnprintf(sv[H5FD_MEM_GHEAP], 32, "%%s-%c.h5", 'g');
    memb_name[H5FD_MEM_GHEAP] = sv[H5FD_MEM_GHEAP];
    memb_addr[H5FD_MEM_GHEAP] = (HADDR_MAX / 4) * 3;

    if (H5Pset_fapl_multi(fapl, memb_map, memb_fapl, memb_name, memb_addr, true) < 0)
        TEST_ERROR;
    h5_fixname(FILENAME[4], fapl, filename, sizeof filename);

    /* Check that the VFD feature flags are correct */
    if ((driver_id = H5Pget_driver(fapl)) < 0)
        TEST_ERROR;
    if (H5FDdriver_query(driver_id, &driver_flags) < 0)
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_SMALLDATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_USE_ALLOC_SIZE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_PAGED_AGGR))
        TEST_ERROR;
    /* Check for extra flags not accounted for above */
    if (driver_flags != (H5FD_FEAT_DATA_SIEVE | H5FD_FEAT_AGGREGATE_SMALLDATA | H5FD_FEAT_USE_ALLOC_SIZE |
                         H5FD_FEAT_PAGED_AGGR))
        TEST_ERROR;

    if ((file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl)) < 0)
        TEST_ERROR;

    if (H5Fclose(file) < 0)
        TEST_ERROR;

    /* Test wrong ways to reopen multi files */
    if (test_multi_opens(filename) < 0)
        TEST_ERROR;

    /* Reopen the file */
    if ((file = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
        TEST_ERROR;

    /* Create and write data set */
    if ((space = H5Screate_simple(2, dims, NULL)) < 0)
        TEST_ERROR;

    /* Retrieve the access property list... */
    if ((access_fapl = H5Fget_access_plist(file)) < 0)
        TEST_ERROR;

    /* Check that the driver is correct */
    if (H5FD_MULTI != H5Pget_driver(access_fapl))
        TEST_ERROR;

    /* ...and close the property list */
    if (H5Pclose(access_fapl) < 0)
        TEST_ERROR;

    /* Check file size API */
    if (H5Fget_filesize(file, &file_size) < 0)
        TEST_ERROR;

    /* Before any data is written, the raw data file is empty.  So
     * the file size is only the size of b-tree + HADDR_MAX/4.
     */
    if (file_size < HADDR_MAX / 4 || file_size > HADDR_MAX / 2)
        TEST_ERROR;

    if ((dset = H5Dcreate2(file, dname, H5T_NATIVE_INT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    for (i = 0; i < MULTI_SIZE; i++)
        for (j = 0; j < MULTI_SIZE; j++)
            buf[i][j] = i * 10000 + j;
    if (H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf_data) < 0)
        TEST_ERROR;

    if ((fapl2 = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    if (H5Pset_multi_type(fapl2, H5FD_MEM_SUPER) < 0)
        TEST_ERROR;
    if (H5Fget_vfd_handle(file, fapl2, (void **)&fhandle) < 0)
        TEST_ERROR;
    if (*fhandle < 0)
        TEST_ERROR;

    if (H5Pset_multi_type(fapl2, H5FD_MEM_DRAW) < 0)
        TEST_ERROR;
    if (H5Fget_vfd_handle(file, fapl2, (void **)&fhandle2) < 0)
        TEST_ERROR;
    if (*fhandle2 < 0)
        TEST_ERROR;

    /* Check file size API */
    if (H5Fget_filesize(file, &file_size) < 0)
        TEST_ERROR;

    /* After the data is written, the file size is huge because the
     * beginning of raw data file is set at HADDR_MAX/2.  It's supposed
     * to be (HADDR_MAX/2 + 128*128*4)
     */
    if (file_size < HADDR_MAX / 2 || file_size > HADDR_MAX)
        TEST_ERROR;

    if (H5Sclose(space) < 0)
        TEST_ERROR;
    if (H5Dclose(dset) < 0)
        TEST_ERROR;
    if (H5Pclose(fapl2) < 0)
        TEST_ERROR;

    /* Create and write attribute for the root group. */
    if ((root = H5Gopen2(file, "/", H5P_DEFAULT)) < 0)
        TEST_ERROR;

    /* Attribute string. */
    if ((atype = H5Tcopy(H5T_C_S1)) < 0)
        TEST_ERROR;

    if (H5Tset_size(atype, HDstrlen(meta) + 1) < 0)
        TEST_ERROR;

    if (H5Tset_strpad(atype, H5T_STR_NULLTERM) < 0)
        TEST_ERROR;

    /* Create and write attribute */
    if ((aspace = H5Screate_simple(1, adims, NULL)) < 0)
        TEST_ERROR;

    if ((attr = H5Acreate2(root, "Metadata", atype, aspace, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    if (H5Awrite(attr, atype, meta) < 0)
        TEST_ERROR;

    /* Close IDs */
    if (H5Tclose(atype) < 0)
        TEST_ERROR;
    if (H5Sclose(aspace) < 0)
        TEST_ERROR;
    if (H5Aclose(attr) < 0)
        TEST_ERROR;

    /* Close and delete the file */
    if (H5Fclose(file) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[4], fapl);

    /* Close the fapl */
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    free(buf);
    free(buf_data);

    PASSED();

    return SUCCEED;

error:
    H5E_BEGIN_TRY
    {
        H5Sclose(space);
        H5Dclose(dset);
        H5Pclose(fapl);
        H5Pclose(fapl2);
        H5Fclose(file);
        H5Aclose(attr);
    }
    H5E_END_TRY

    free(buf);
    free(buf_data);

    return FAIL;
} /* end test_multi() */

/*-------------------------------------------------------------------------
 * Function:    test_multi_compat
 *
 * Purpose:     Tests the backward compatibility for MULTI driver.
 *              See if we can open files created with v1.6 library.
 *              The source file was created by the test/file_handle.c
 *              of the v1.6 library.  This test verifies the fix for
 *              Issue 2598. In v1.6 library, there was EOA for the whole
 *              MULTI file saved in the super block.  We took it out in
 *              v1.8 library because it's meaningless for the MULTI file.
 *              v1.8 library saves the EOA for the metadata file, instead.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_multi_compat(void)
{
    hid_t file = H5I_INVALID_HID, fapl = H5I_INVALID_HID, dset = H5I_INVALID_HID, space = H5I_INVALID_HID;
    char  newname[1024];
    char  filename_s[1024], newname_s[1024];
    char  filename_r[1024], newname_r[1024];
    H5FD_mem_t  mt, memb_map[H5FD_MEM_NTYPES];
    hid_t       memb_fapl[H5FD_MEM_NTYPES];
    haddr_t     memb_addr[H5FD_MEM_NTYPES];
    const char *memb_name[H5FD_MEM_NTYPES];
    char        sv[H5FD_MEM_NTYPES][32];
    hsize_t     dims[2] = {MULTI_SIZE, MULTI_SIZE};
    int         i, j;
    int       **buf      = NULL;
    int        *buf_data = NULL;

    TESTING("MULTI file driver backward compatibility");

    /* Set up data array */
    if (NULL == (buf_data = (int *)calloc(MULTI_SIZE * MULTI_SIZE, sizeof(int))))
        TEST_ERROR;
    if (NULL == (buf = (int **)calloc(MULTI_SIZE, sizeof(buf_data))))
        TEST_ERROR;
    for (i = 0; i < MULTI_SIZE; i++)
        buf[i] = buf_data + (i * MULTI_SIZE);

    /* Set file access property list for MULTI driver */
    if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;

    memset(memb_map, 0, sizeof memb_map);
    memset(memb_fapl, 0, sizeof memb_fapl);
    memset(memb_name, 0, sizeof memb_name);
    memset(memb_addr, 0, sizeof memb_addr);
    memset(sv, 0, sizeof sv);

    for (mt = H5FD_MEM_DEFAULT; mt < H5FD_MEM_NTYPES; mt++)
        memb_map[mt] = H5FD_MEM_SUPER;
    memb_map[H5FD_MEM_DRAW] = H5FD_MEM_DRAW;

    memb_fapl[H5FD_MEM_SUPER] = H5P_DEFAULT;
    HDsnprintf(sv[H5FD_MEM_SUPER], 32, "%%s-%c.h5", 's');
    memb_name[H5FD_MEM_SUPER] = sv[H5FD_MEM_SUPER];
    memb_addr[H5FD_MEM_SUPER] = 0;

    memb_fapl[H5FD_MEM_DRAW] = H5P_DEFAULT;
    HDsnprintf(sv[H5FD_MEM_DRAW], 32, "%%s-%c.h5", 'r');
    memb_name[H5FD_MEM_DRAW] = sv[H5FD_MEM_DRAW];
    memb_addr[H5FD_MEM_DRAW] = HADDR_MAX / 2;

    if (H5Pset_fapl_multi(fapl, memb_map, memb_fapl, memb_name, memb_addr, true) < 0)
        TEST_ERROR;

    h5_fixname(FILENAME[9], fapl, newname, sizeof newname);

    /* Make copy for the data file in the build directory, to protect the
     * original file in the source directory
     */
    HDsnprintf(filename_s, sizeof(filename_s), "%s-%c.h5", MULTI_COMPAT_BASENAME, 's');
    HDsnprintf(newname_s, sizeof(newname_s), "%s-%c.h5", FILENAME[9], 's');
    h5_make_local_copy(filename_s, newname_s);

    HDsnprintf(filename_r, sizeof(filename_r), "%s-%c.h5", MULTI_COMPAT_BASENAME, 'r');
    HDsnprintf(newname_r, sizeof(newname_r), "%s-%c.h5", FILENAME[9], 'r');
    h5_make_local_copy(filename_r, newname_r);

    /* Reopen the file for read only.  Verify 1.8 library can open file
     * created with 1.6 library.
     */
    if ((file = H5Fopen(newname, H5F_ACC_RDONLY, fapl)) < 0)
        TEST_ERROR;

    if ((dset = H5Dopen2(file, DSET1_NAME, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    if (H5Dclose(dset) < 0)
        TEST_ERROR;

    if (H5Fclose(file) < 0)
        TEST_ERROR;

    /* Make sure we can reopen the file for read and write */
    if ((file = H5Fopen(newname, H5F_ACC_RDWR, fapl)) < 0)
        TEST_ERROR;

    if ((dset = H5Dopen2(file, DSET1_NAME, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    if (H5Dclose(dset) < 0)
        TEST_ERROR;

    if (H5Fclose(file) < 0)
        TEST_ERROR;

    /* Reopen the file for adding another dataset. The new EOA for metadata file
     * should be written to the file */
    if ((file = H5Fopen(newname, H5F_ACC_RDWR, fapl)) < 0)
        TEST_ERROR;

    /* Create and write data set */
    if ((space = H5Screate_simple(2, dims, NULL)) < 0)
        TEST_ERROR;

    if ((dset = H5Dcreate2(file, DSET3_NAME, H5T_NATIVE_INT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) <
        0)
        TEST_ERROR;

    for (i = 0; i < MULTI_SIZE; i++)
        for (j = 0; j < MULTI_SIZE; j++)
            buf[i][j] = i * 10000 + j;
    if (H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf_data) < 0)
        TEST_ERROR;

    if (H5Dclose(dset) < 0)
        TEST_ERROR;

    if (H5Sclose(space) < 0)
        TEST_ERROR;

    if (H5Fclose(file) < 0)
        TEST_ERROR;

    /* Reopen the file for read only again. Verify the library can handle
     * the EOA correctly */
    if ((file = H5Fopen(newname, H5F_ACC_RDONLY, fapl)) < 0)
        TEST_ERROR;

    if ((dset = H5Dopen2(file, DSET1_NAME, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    if (H5Dclose(dset) < 0)
        TEST_ERROR;

    if ((dset = H5Dopen2(file, DSET3_NAME, H5P_DEFAULT)) < 0)
        TEST_ERROR;

    if (H5Dclose(dset) < 0)
        TEST_ERROR;

    /* Close and delete the file */
    if (H5Fclose(file) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[9], fapl);

    /* Close the fapl */
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    free(buf);
    free(buf_data);

    PASSED();

    return SUCCEED;

error:
    H5E_BEGIN_TRY
    {
        H5Sclose(space);
        H5Dclose(dset);
        H5Pclose(fapl);
        H5Fclose(file);
    }
    H5E_END_TRY

    free(buf);
    free(buf_data);

    return FAIL;
} /* end test_multi_compat() */

/*-------------------------------------------------------------------------
 * Function:    test_log
 *
 * Purpose:     Tests the file handle interface for log driver
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_log(void)
{
    hid_t         file         = H5I_INVALID_HID;
    hid_t         fapl         = H5I_INVALID_HID;
    hid_t         access_fapl  = H5I_INVALID_HID;
    hid_t         driver_id    = H5I_INVALID_HID; /* ID for this VFD              */
    unsigned long driver_flags = 0;               /* VFD feature flags            */
    char          filename[1024];
    int          *fhandle   = NULL;
    hsize_t       file_size = 0;
    unsigned int  flags     = H5FD_LOG_ALL;
    size_t        buf_size  = 4 * KB;
    herr_t        ret       = SUCCEED;

    TESTING("LOG file driver");

    if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;

    /* Make sure calling with an invalid fapl doesn't crash */
    H5E_BEGIN_TRY
    {
        ret = H5Pset_fapl_log(H5I_INVALID_HID, LOG_FILENAME, 0, 0);
    }
    H5E_END_TRY
    if (SUCCEED == ret)
        TEST_ERROR;

    /* Set property list and file name for log driver. */
    if (H5Pset_fapl_log(fapl, LOG_FILENAME, flags, buf_size) < 0)
        TEST_ERROR;
    h5_fixname(FILENAME[6], fapl, filename, sizeof filename);

    /* Check that the VFD feature flags are correct */
    if ((driver_id = H5Pget_driver(fapl)) < 0)
        TEST_ERROR;
    if (H5FDdriver_query(driver_id, &driver_flags) < 0)
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_ACCUMULATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_SMALLDATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_POSIX_COMPAT_HANDLE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_SUPPORTS_SWMR_IO))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DEFAULT_VFD_COMPATIBLE))
        TEST_ERROR;
    /* Check for extra flags not accounted for above */
    if (driver_flags != (H5FD_FEAT_AGGREGATE_METADATA | H5FD_FEAT_ACCUMULATE_METADATA | H5FD_FEAT_DATA_SIEVE |
                         H5FD_FEAT_AGGREGATE_SMALLDATA | H5FD_FEAT_POSIX_COMPAT_HANDLE |
                         H5FD_FEAT_SUPPORTS_SWMR_IO | H5FD_FEAT_DEFAULT_VFD_COMPATIBLE))
        TEST_ERROR;

    /* Create the test file */
    if ((file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl)) < 0)
        TEST_ERROR;

    /* Retrieve the access property list... */
    if ((access_fapl = H5Fget_access_plist(file)) < 0)
        TEST_ERROR;

    /* Check that the driver is correct */
    if (H5FD_LOG != H5Pget_driver(access_fapl))
        TEST_ERROR;

    /* ...and close the property list */
    if (H5Pclose(access_fapl) < 0)
        TEST_ERROR;

    /* Check file handle API */
    if (H5Fget_vfd_handle(file, H5P_DEFAULT, (void **)&fhandle) < 0)
        TEST_ERROR;
    if (*fhandle < 0)
        TEST_ERROR;

    /* Check file size API */
    if (H5Fget_filesize(file, &file_size) < 0)
        TEST_ERROR;

    /* There is no guarantee the size of metadata in file is constant.
     * Just try to check if it's reasonable.  It's 2KB right now.
     */
    if (file_size < 1 * KB || file_size > 4 * KB)
        TEST_ERROR;

    /* Close and delete the file */
    if (H5Fclose(file) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[6], fapl);

    /* Close the fapl */
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(fapl);
        H5Fclose(file);
    }
    H5E_END_TRY
    return -1;
}

/*-------------------------------------------------------------------------
 * Function:    test_stdio
 *
 * Purpose:     Tests the file handle interface for STDIO driver
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_stdio(void)
{
    hid_t         file         = H5I_INVALID_HID;
    hid_t         fapl         = H5I_INVALID_HID;
    hid_t         access_fapl  = H5I_INVALID_HID;
    hid_t         driver_id    = H5I_INVALID_HID; /* ID for this VFD              */
    unsigned long driver_flags = 0;               /* VFD feature flags            */
    char          filename[1024];
    FILE         *fhandle   = NULL;
    hsize_t       file_size = 0;

    TESTING("STDIO file driver");

    /* Set property list and file name for STDIO driver. */
    if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    if (H5Pset_fapl_stdio(fapl) < 0)
        TEST_ERROR;
    h5_fixname(FILENAME[7], fapl, filename, sizeof filename);

    /* Check that the VFD feature flags are correct */
    if ((driver_id = H5Pget_driver(fapl)) < 0)
        TEST_ERROR;
    if (H5FDdriver_query(driver_id, &driver_flags) < 0)
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_ACCUMULATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_SMALLDATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DEFAULT_VFD_COMPATIBLE))
        TEST_ERROR;
    /* Check for extra flags not accounted for above */
    if (driver_flags != (H5FD_FEAT_AGGREGATE_METADATA | H5FD_FEAT_ACCUMULATE_METADATA | H5FD_FEAT_DATA_SIEVE |
                         H5FD_FEAT_AGGREGATE_SMALLDATA | H5FD_FEAT_DEFAULT_VFD_COMPATIBLE))
        TEST_ERROR;

    if ((file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl)) < 0)
        TEST_ERROR;

    /* Retrieve the access property list... */
    if ((access_fapl = H5Fget_access_plist(file)) < 0)
        TEST_ERROR;

    /* Check that the driver is correct */
    if (H5FD_STDIO != H5Pget_driver(access_fapl))
        TEST_ERROR;

    /* ...and close the property list */
    if (H5Pclose(access_fapl) < 0)
        TEST_ERROR;

    /* Check file handle API */
    if (H5Fget_vfd_handle(file, H5P_DEFAULT, (void **)&fhandle) < 0)
        TEST_ERROR;
    if (NULL == fhandle)
        TEST_ERROR;

    /* Check file size API */
    if (H5Fget_filesize(file, &file_size) < 0)
        TEST_ERROR;

    /* There is no guarantee the size of metadata in file is constant.
     * Just try to check if it's reasonable.  It's 2KB right now.
     */
    if (file_size < 1 * KB || file_size > 4 * KB)
        TEST_ERROR;

    /* Close and delete the file */
    if (H5Fclose(file) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[7], fapl);

    /* Close the fapl */
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(fapl);
        H5Fclose(file);
    }
    H5E_END_TRY
    return -1;
}

/*-------------------------------------------------------------------------
 * Function:    test_windows
 *
 * Purpose:     Tests the file handle interface for WINDOWS driver
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_windows(void)
{
#ifdef H5_HAVE_WINDOWS

    hid_t         file         = H5I_INVALID_HID;
    hid_t         fapl         = H5I_INVALID_HID;
    hid_t         access_fapl  = H5I_INVALID_HID;
    hid_t         driver_id    = H5I_INVALID_HID; /* ID for this VFD              */
    unsigned long driver_flags = 0;               /* VFD feature flags            */
    char          filename[1024];
    int          *fhandle   = NULL;
    hsize_t       file_size = 0;

#endif /*H5_HAVE_WINDOWS*/

    TESTING("WINDOWS file driver");

#ifndef H5_HAVE_WINDOWS

    SKIPPED();
    return 0;

#else /* H5_HAVE_WINDOWS */

    /* Set property list and file name for WINDOWS driver. */
    if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;
    if (H5Pset_fapl_windows(fapl) < 0)
        TEST_ERROR;
    h5_fixname(FILENAME[8], fapl, filename, sizeof filename);

    /* Check that the VFD feature flags are correct */
    if ((driver_id = H5Pget_driver(fapl)) < 0)
        TEST_ERROR;
    if (H5FDdriver_query(driver_id, &driver_flags) < 0)
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_ACCUMULATE_METADATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_AGGREGATE_SMALLDATA))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_POSIX_COMPAT_HANDLE))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_SUPPORTS_SWMR_IO))
        TEST_ERROR;
    if (!(driver_flags & H5FD_FEAT_DEFAULT_VFD_COMPATIBLE))
        TEST_ERROR;
    /* Check for extra flags not accounted for above */
    if (driver_flags != (H5FD_FEAT_AGGREGATE_METADATA | H5FD_FEAT_ACCUMULATE_METADATA | H5FD_FEAT_DATA_SIEVE |
                         H5FD_FEAT_AGGREGATE_SMALLDATA | H5FD_FEAT_POSIX_COMPAT_HANDLE |
                         H5FD_FEAT_SUPPORTS_SWMR_IO | H5FD_FEAT_DEFAULT_VFD_COMPATIBLE))
        TEST_ERROR;

    if ((file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl)) < 0)
        TEST_ERROR;

    /* Retrieve the access property list... */
    if ((access_fapl = H5Fget_access_plist(file)) < 0)
        TEST_ERROR;

    /* Check that the driver is correct */
    if (H5FD_WINDOWS != H5Pget_driver(access_fapl))
        TEST_ERROR;

    /* ...and close the property list */
    if (H5Pclose(access_fapl) < 0)
        TEST_ERROR;

    /* Check file handle API */
    if (H5Fget_vfd_handle(file, H5P_DEFAULT, (void **)&fhandle) < 0)
        TEST_ERROR;
    if (*fhandle < 0)
        TEST_ERROR;

    /* Check file size API */
    if (H5Fget_filesize(file, &file_size) < 0)
        TEST_ERROR;

    /* There is no guarantee the size of metadata in file is constant.
     * Just try to check if it's reasonable.  It's 2KB right now.
     */
    if (file_size < 1 * KB || file_size > 4 * KB)
        TEST_ERROR;

    /* Close and delete the file */
    if (H5Fclose(file) < 0)
        TEST_ERROR;
    h5_delete_test_file(FILENAME[8], fapl);

    /* Close the fapl */
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(fapl);
        H5Fclose(file);
    }
    H5E_END_TRY
    return -1;

#endif /* H5_HAVE_WINDOWS */
} /* end test_windows() */

/*-------------------------------------------------------------------------
 * Function:    test_ros3
 *
 * Purpose:     Tests the file handle interface for the ROS3 driver
 *
 *              As the ROS3 driver is 1) read only, 2) requires access
 *              to an S3 server (minio for now), this test is quite
 *              different from the other tests.
 *
 *              For now, test only fapl & flags.  Extend as the
 *              work on the VFD continues.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_ros3(void)
{
#ifdef H5_HAVE_ROS3_VFD
    hid_t            fid          = H5I_INVALID_HID; /* file ID                      */
    hid_t            fapl_id      = H5I_INVALID_HID; /* file access property list ID */
    hid_t            fapl_id_out  = H5I_INVALID_HID; /* from H5Fget_access_plist     */
    hid_t            driver_id    = H5I_INVALID_HID; /* ID for this VFD              */
    unsigned long    driver_flags = 0;               /* VFD feature flags            */
    char             filename[1024];                 /* filename                     */
    H5FD_ros3_fapl_t test_ros3_fa;
    H5FD_ros3_fapl_t ros3_fa_0 = {
        /* version      = */ H5FD_CURR_ROS3_FAPL_T_VERSION,
        /* authenticate = */ false,
        /* aws_region   = */ "",
        /* secret_id    = */ "",
        /* secret_key   = */ "plugh",
    };
#endif /*H5_HAVE_ROS3_VFD */

    TESTING("Read-only S3 file driver");

#ifndef H5_HAVE_ROS3_VFD
    SKIPPED();
    return 0;
#else  /* H5_HAVE_ROS3_VFD */

    /* Set property list and file name for ROS3 driver. */
    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;

    if (H5Pset_fapl_ros3(fapl_id, &ros3_fa_0) < 0)
        TEST_ERROR;

    /* verify that the ROS3 FAPL entry is set as expected */
    if (H5Pget_fapl_ros3(fapl_id, &test_ros3_fa) < 0)
        TEST_ERROR;

    /* need a macro to compare instances of H5FD_ros3_fapl_t */
    if ((test_ros3_fa.version != ros3_fa_0.version) ||
        (test_ros3_fa.authenticate != ros3_fa_0.authenticate) ||
        (HDstrcmp(test_ros3_fa.aws_region, ros3_fa_0.aws_region) != 0) ||
        (HDstrcmp(test_ros3_fa.secret_id, ros3_fa_0.secret_id) != 0) ||
        (HDstrcmp(test_ros3_fa.secret_key, ros3_fa_0.secret_key) != 0))
        TEST_ERROR;

    h5_fixname(FILENAME[10], fapl_id, filename, sizeof(filename));

    /* Check that the VFD feature flags are correct */
    if ((driver_id = H5Pget_driver(fapl_id)) < 0)
        TEST_ERROR;

    if (H5FDdriver_query(driver_id, &driver_flags) < 0)
        TEST_ERROR;

    if (!(driver_flags & H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;

    /* Check for extra flags not accounted for above */
    if (driver_flags != (H5FD_FEAT_DATA_SIEVE))
        TEST_ERROR;

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(fapl_id);
        H5Pclose(fapl_id_out);
        H5Fclose(fid);
    }
    H5E_END_TRY
    return -1;
#endif /* H5_HAVE_ROS3_VFD */
} /* end test_ros3() */

/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 * Macro: SPLITTER_TEST_FAULT()
 *
 * utility macro, helps create stack-like backtrace on error.
 * requires defined in the calling function:
 *    * variable `int ret_value` (return -1 on error)`
 *    * label `done` for exit on fault
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 */
#define SPLITTER_TEST_FAULT(mesg)                                                                            \
    do {                                                                                                     \
        H5_FAILED();                                                                                         \
        AT();                                                                                                \
        fprintf(stderr, mesg);                                                                               \
        H5Eprint2(H5E_DEFAULT, stderr);                                                                      \
        fflush(stderr);                                                                                      \
        ret_value = -1;                                                                                      \
        goto done;                                                                                           \
    } while (0)

/*-------------------------------------------------------------------------
 * Function:    compare_splitter_config_info
 *
 * Purpose:     Helper function to compare configuration info found in a
 *              FAPL against a canonical structure.
 *
 * Return:      Success:  0, if config info in FAPL matches info structure.
 *              Failure: -1, if difference detected.
 *
 *-------------------------------------------------------------------------
 */
static int
compare_splitter_config_info(hid_t fapl_id, H5FD_splitter_vfd_config_t *info)
{
    int                         ret_value    = 0;
    H5FD_splitter_vfd_config_t *fetched_info = NULL;

    if (NULL == (fetched_info = calloc(1, sizeof(H5FD_splitter_vfd_config_t))))
        SPLITTER_TEST_FAULT("memory allocation for fetched_info struct failed");

    fetched_info->magic      = H5FD_SPLITTER_MAGIC;
    fetched_info->version    = H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION;
    fetched_info->rw_fapl_id = H5I_INVALID_HID;
    fetched_info->wo_fapl_id = H5I_INVALID_HID;

    if (H5Pget_fapl_splitter(fapl_id, fetched_info) < 0) {
        SPLITTER_TEST_FAULT("can't get splitter info");
    }
    if (info->rw_fapl_id == H5P_DEFAULT) {
        if (H5Pget_driver(fetched_info->rw_fapl_id) != H5Pget_driver(H5P_FILE_ACCESS_DEFAULT)) {
            SPLITTER_TEST_FAULT("Read-Write driver mismatch (default)\n");
        }
    }
    else {
        if (H5Pget_driver(fetched_info->rw_fapl_id) != H5Pget_driver(info->rw_fapl_id)) {
            SPLITTER_TEST_FAULT("Read-Write driver mismatch\n");
        }
    }
    if (info->wo_fapl_id == H5P_DEFAULT) {
        if (H5Pget_driver(fetched_info->wo_fapl_id) != H5Pget_driver(H5P_FILE_ACCESS_DEFAULT)) {
            SPLITTER_TEST_FAULT("Write-Only driver mismatch (default)\n");
        }
    }
    else {
        if (H5Pget_driver(fetched_info->wo_fapl_id) != H5Pget_driver(info->wo_fapl_id)) {
            SPLITTER_TEST_FAULT("Write-Only driver mismatch\n");
        }
    }
    if ((HDstrlen(info->wo_path) != HDstrlen(fetched_info->wo_path)) ||
        HDstrncmp(info->wo_path, fetched_info->wo_path, H5FD_SPLITTER_PATH_MAX) != 0) {
        fprintf(stderr, "MISMATCH: '%s' :: '%s'\n", info->wo_path, fetched_info->wo_path);
        HEXPRINT(H5FD_SPLITTER_PATH_MAX, info->wo_path);
        HEXPRINT(H5FD_SPLITTER_PATH_MAX, fetched_info->wo_path);
        SPLITTER_TEST_FAULT("Write-Only file path mismatch\n");
    }

done:
    free(fetched_info);

    return ret_value;
} /* end compare_splitter_config_info() */

/*-------------------------------------------------------------------------
 * Function:    run_splitter_test
 *
 * Purpose:     Auxiliary function for test_splitter().
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 * Description:
 *              Perform basic open-write-close with the Splitter VFD.
 *              Prior to operations, removes files from a previous run,
 *              if they exist.
 *              After writing, compares read-write and write-only files.
 *              Includes FAPL sanity testing.
 *
 *-------------------------------------------------------------------------
 */
static int
run_splitter_test(const struct splitter_dataset_def *data, bool ignore_wo_errors, bool provide_logfile_path,
                  const hid_t sub_fapl_ids[2])
{
    hid_t                       file_id     = H5I_INVALID_HID;
    hid_t                       fapl_id     = H5I_INVALID_HID;
    hid_t                       dset_id     = H5I_INVALID_HID;
    hid_t                       space_id    = H5I_INVALID_HID;
    hid_t                       fapl_id_out = H5I_INVALID_HID;
    hid_t                       fapl_id_cpy = H5I_INVALID_HID;
    H5FD_splitter_vfd_config_t *vfd_config  = NULL;
    char                       *filename_rw = NULL;
    FILE                       *logfile     = NULL;
    int                         ret_value   = 0;

    if (NULL == (vfd_config = calloc(1, sizeof(H5FD_splitter_vfd_config_t))))
        SPLITTER_TEST_FAULT("memory allocation for vfd_config struct failed");
    if (NULL == (filename_rw = calloc(H5FD_SPLITTER_PATH_MAX + 1, sizeof(char))))
        SPLITTER_TEST_FAULT("memory allocation for filename_rw string failed");

    vfd_config->magic          = H5FD_SPLITTER_MAGIC;
    vfd_config->version        = H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION;
    vfd_config->ignore_wo_errs = ignore_wo_errors;
    vfd_config->rw_fapl_id     = sub_fapl_ids[0];
    vfd_config->wo_fapl_id     = sub_fapl_ids[1];

    if (splitter_prepare_file_paths(vfd_config, filename_rw) < 0) {
        SPLITTER_TEST_FAULT("can't prepare file paths\n");
    }

    if (provide_logfile_path == false) {
        vfd_config->log_file_path[0] = '\0'; /* reset as empty string */
    }

    /* Create a new fapl to use the SPLITTER file driver */
    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) == H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("can't create FAPL ID\n");
    }
    if (H5Pset_fapl_splitter(fapl_id, vfd_config) < 0) {
        SPLITTER_TEST_FAULT("can't set splitter FAPL\n");
    }
    if (H5Pget_driver(fapl_id) != H5FD_SPLITTER) {
        SPLITTER_TEST_FAULT("set FAPL not SPLITTER\n");
    }

    if (compare_splitter_config_info(fapl_id, vfd_config) < 0) {
        SPLITTER_TEST_FAULT("information mismatch\n");
    }

    /*
     * Copy property list, light compare, and close the copy.
     * Helps test driver-implemented FAPL-copying and library ID management.
     */

    fapl_id_cpy = H5Pcopy(fapl_id);
    if (H5I_INVALID_HID == fapl_id_cpy) {
        SPLITTER_TEST_FAULT("can't copy FAPL\n");
    }
    if (compare_splitter_config_info(fapl_id_cpy, vfd_config) < 0) {
        SPLITTER_TEST_FAULT("information mismatch\n");
    }
    if (H5Pclose(fapl_id_cpy) < 0) {
        SPLITTER_TEST_FAULT("can't close fapl copy\n");
    }

    /*
     * Proceed with test. Create file.
     */
    file_id = H5Fcreate(filename_rw, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id);
    if (file_id < 0) {
        SPLITTER_TEST_FAULT("can't create file\n");
    }

    /*
     * Check driver from file
     */

    fapl_id_out = H5Fget_access_plist(file_id);
    if (H5I_INVALID_HID == fapl_id_out) {
        SPLITTER_TEST_FAULT("can't get file's FAPL\n");
    }
    if (H5Pget_driver(fapl_id_out) != H5FD_SPLITTER) {
        SPLITTER_TEST_FAULT("wrong file FAPL driver\n");
    }
    if (compare_splitter_config_info(fapl_id_out, vfd_config) < 0) {
        SPLITTER_TEST_FAULT("information mismatch\n");
    }
    if (H5Pclose(fapl_id_out) < 0) {
        SPLITTER_TEST_FAULT("can't close file's FAPL\n");
    }

    /*
     * Create and write the dataset
     */

    space_id = H5Screate_simple(data->n_dims, data->dims, NULL);
    if (space_id < 0) {
        SPLITTER_TEST_FAULT("can't create dataspace\n");
    }
    dset_id = H5Dcreate2(file_id, data->dset_name, data->mem_type_id, space_id, H5P_DEFAULT, H5P_DEFAULT,
                         H5P_DEFAULT);
    if (dset_id < 0) {
        SPLITTER_TEST_FAULT("can't create dataset\n");
    }
    if (H5Dwrite(dset_id, data->mem_type_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, data->buf) < 0) {
        SPLITTER_TEST_FAULT("can't write data to dataset\n");
    }

    /* Close everything */
    if (H5Dclose(dset_id) < 0) {
        SPLITTER_TEST_FAULT("can't close dset\n");
    }
    if (H5Sclose(space_id) < 0) {
        SPLITTER_TEST_FAULT("can't close space\n");
    }
    if (H5Pclose(fapl_id) < 0) {
        SPLITTER_TEST_FAULT("can't close fapl\n");
    }
    if (H5Fclose(file_id) < 0) {
        SPLITTER_TEST_FAULT("can't close file\n");
    }

    /* Verify that the R/W and W/O files are identical */
    if (h5_compare_file_bytes(filename_rw, vfd_config->wo_path) < 0) {
        SPLITTER_TEST_FAULT("files are not byte-for-byte equivalent\n");
    }

    /* Verify existence of logfile if appropriate */
    logfile = fopen(vfd_config->log_file_path, "r");
    if ((true == provide_logfile_path && NULL == logfile) ||
        (false == provide_logfile_path && NULL != logfile)) {
        SPLITTER_TEST_FAULT("no logfile when one was expected\n");
    }

done:
    if (ret_value < 0) {
        H5E_BEGIN_TRY
        {
            H5Dclose(dset_id);
            H5Sclose(space_id);
            H5Pclose(fapl_id_out);
            H5Pclose(fapl_id_cpy);
            H5Pclose(fapl_id);
            H5Fclose(file_id);
        }
        H5E_END_TRY
    }

    if (logfile != NULL)
        fclose(logfile);

    free(vfd_config);
    free(filename_rw);

    return ret_value;
} /* end run_splitter_test() */

/*-------------------------------------------------------------------------
 * Function:    driver_is_splitter_compatible
 *
 * Purpose:     Determine whether the driver set in the FAPL ID is compatible
 *              with the Splitter VFD -- specifically, Write-Only channel.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 * Description: Attempts to put the given FAPL ID as the W/O channel.
 *              Uses driver's own mechanisms to generate error, and catches
 *              error.
 *
 *-------------------------------------------------------------------------
 */
static int
driver_is_splitter_compatible(hid_t fapl_id)
{
    H5FD_splitter_vfd_config_t *vfd_config    = NULL;
    hid_t                       split_fapl_id = H5I_INVALID_HID;
    herr_t                      ret           = SUCCEED;
    int                         ret_value     = 0;

    if (NULL == (vfd_config = calloc(1, sizeof(H5FD_splitter_vfd_config_t)))) {
        FAIL_PUTS_ERROR("memory allocation for vfd_config struct failed");
    }

    if (H5I_INVALID_HID == (split_fapl_id = H5Pcreate(H5P_FILE_ACCESS))) {
        FAIL_PUTS_ERROR("Can't create contained FAPL");
    }
    vfd_config->magic          = H5FD_SPLITTER_MAGIC;
    vfd_config->version        = H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION;
    vfd_config->ignore_wo_errs = false;
    vfd_config->rw_fapl_id     = H5P_DEFAULT;
    vfd_config->wo_fapl_id     = fapl_id;
    HDstrncpy(vfd_config->wo_path, "nonesuch", H5FD_SPLITTER_PATH_MAX);
    vfd_config->log_file_path[0] = '\0';

    H5E_BEGIN_TRY
    {
        ret = H5Pset_fapl_splitter(split_fapl_id, vfd_config);
    }
    H5E_END_TRY
    if (SUCCEED == ret) {
        ret_value = -1;
    }

    if (H5Pclose(split_fapl_id) < 0) {
        FAIL_PUTS_ERROR("Can't close contained FAPL");
    }
    split_fapl_id = H5I_INVALID_HID;

    free(vfd_config);

    return ret_value;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(split_fapl_id);
    }
    H5E_END_TRY

    free(vfd_config);

    return -1;
} /* end driver_is_splitter_compatible() */

/*-------------------------------------------------------------------------
 * Function:    splitter_RO_test
 *
 * Purpose:     Verify Splitter VFD with the Read-Only access flag.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 * Description: Attempt read-only opening of files with different
 *              permutations of files already existing on-disk.
 *
 *-------------------------------------------------------------------------
 */
static int
splitter_RO_test(const struct splitter_dataset_def *data, hid_t child_fapl_id)
{
    char                       *filename_rw = NULL;
    H5FD_splitter_vfd_config_t *vfd_config  = NULL;
    hid_t                       fapl_id     = H5I_INVALID_HID;
    hid_t                       file_id     = H5I_INVALID_HID;
    int                         ret_value   = 0;

    if (NULL == (vfd_config = calloc(1, sizeof(H5FD_splitter_vfd_config_t))))
        SPLITTER_TEST_FAULT("memory allocation for vfd_config struct failed");
    if (NULL == (filename_rw = calloc(H5FD_SPLITTER_PATH_MAX + 1, sizeof(char))))
        SPLITTER_TEST_FAULT("memory allocation for filename_rw string failed");

    vfd_config->magic          = H5FD_SPLITTER_MAGIC;
    vfd_config->version        = H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION;
    vfd_config->ignore_wo_errs = false;
    vfd_config->rw_fapl_id     = child_fapl_id;
    vfd_config->wo_fapl_id     = child_fapl_id;

    if (splitter_prepare_file_paths(vfd_config, filename_rw) < 0) {
        SPLITTER_TEST_FAULT("can't prepare splitter file paths\n");
    }

    /* Create a new fapl to use the SPLITTER file driver */
    fapl_id = H5Pcreate(H5P_FILE_ACCESS);
    if (H5I_INVALID_HID == fapl_id) {
        SPLITTER_TEST_FAULT("can't create FAPL ID\n");
    }
    if (H5Pset_fapl_splitter(fapl_id, vfd_config) < 0) {
        SPLITTER_TEST_FAULT("can't set splitter FAPL\n");
    }
    if (H5Pget_driver(fapl_id) != H5FD_SPLITTER) {
        SPLITTER_TEST_FAULT("set FAPL not SPLITTER\n");
    }

    /* Attempt R/O open when both files are nonexistent
     * Should fail.
     */

    H5E_BEGIN_TRY
    {
        file_id = H5Fopen(filename_rw, H5F_ACC_RDONLY, fapl_id);
    }
    H5E_END_TRY
    if (file_id >= 0) {
        SPLITTER_TEST_FAULT("R/O open on nonexistent files unexpectedly successful\n");
    }

    /* Attempt R/O open when only W/O file exists
     * Should fail.
     */

    if (splitter_create_single_file_at(vfd_config->wo_path, vfd_config->wo_fapl_id, data) < 0) {
        SPLITTER_TEST_FAULT("can't write W/O file\n");
    }
    H5E_BEGIN_TRY
    {
        file_id = H5Fopen(filename_rw, H5F_ACC_RDONLY, fapl_id);
    }
    H5E_END_TRY
    if (file_id >= 0) {
        SPLITTER_TEST_FAULT("R/O open with extant W/O file unexpectedly successful\n");
    }
    HDremove(vfd_config->wo_path);

    /* Attempt R/O open when only R/W file exists
     * Should fail.
     */

    if (splitter_create_single_file_at(filename_rw, vfd_config->rw_fapl_id, data) < 0) {
        SPLITTER_TEST_FAULT("can't create R/W file\n");
    }
    H5E_BEGIN_TRY
    {
        file_id = H5Fopen(filename_rw, H5F_ACC_RDONLY, fapl_id);
    }
    H5E_END_TRY
    if (file_id >= 0) {
        SPLITTER_TEST_FAULT("R/O open with extant R/W file unexpectedly successful\n");
    }

    /* Attempt R/O open when both R/W and W/O files exist
     */

    if (splitter_create_single_file_at(vfd_config->wo_path, vfd_config->wo_fapl_id, data) < 0) {
        SPLITTER_TEST_FAULT("can't create W/O file\n");
    }
    file_id = H5Fopen(filename_rw, H5F_ACC_RDONLY, fapl_id);
    if (file_id < 0) {
        SPLITTER_TEST_FAULT("R/O open on two extant files failed\n");
    }
    if (splitter_compare_expected_data(file_id, data) < 0) {
        SPLITTER_TEST_FAULT("data mismatch in R/W file\n");
    }
    if (H5Fclose(file_id) < 0) {
        SPLITTER_TEST_FAULT("can't close file(s)\n");
    }
    file_id = H5I_INVALID_HID;

    /* Cleanup
     */

    if (H5Pclose(fapl_id) < 0) {
        SPLITTER_TEST_FAULT("can't close FAPL ID\n");
    }
    fapl_id = H5I_INVALID_HID;

done:
    if (ret_value < 0) {
        H5E_BEGIN_TRY
        {
            H5Pclose(fapl_id);
            H5Fclose(file_id);
        }
        H5E_END_TRY
    }

    free(vfd_config);
    free(filename_rw);

    return ret_value;
} /* end splitter_RO_test() */

/*-------------------------------------------------------------------------
 * Function:    splitter_prepare_file_paths
 *
 * Purpose:     Get file paths ready for use by the Splitter VFD tests.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 * Description:
 *              Use h5_fixname to adjust the splitter-relevant file paths
 *              from those given in FILENAMES.
 *
 *              REMOVES EXISTING FILES AT THE PATH LOCATIONS PRIOR TO RETURN.
 *
 *              The relevant file paths will be set in filename_rw_out and
 *              inside the config structure (wo_path, log_file_path).
 *
 *              `filename_rw_out` must be at least H5FD_SPLITTER_PATH_MAX+1
 *              characters long.
 *
 *              `vfd_config` must have its child FAPL IDs preset.
 *
 *-------------------------------------------------------------------------
 */
static int
splitter_prepare_file_paths(H5FD_splitter_vfd_config_t *vfd_config, char *filename_rw_out)
{
    int ret_value = 0;

    if (vfd_config == NULL || vfd_config->magic != H5FD_SPLITTER_MAGIC) {
        SPLITTER_TEST_FAULT("invalid splitter config pointer\n");
    }
    if (filename_rw_out == NULL) {
        SPLITTER_TEST_FAULT("NULL filename_rw pointer\n");
    }

    /* TODO: sanity-check fapl IDs? */

    /* Build the r/w file, w/o file, and the log file paths.
     * Output is stored in the associated string pointers.
     */
    h5_fixname(FILENAME[11], vfd_config->rw_fapl_id, filename_rw_out, H5FD_SPLITTER_PATH_MAX);
    h5_fixname(FILENAME[12], vfd_config->wo_fapl_id, vfd_config->wo_path, H5FD_SPLITTER_PATH_MAX);
    h5_fixname_no_suffix(FILENAME[13], vfd_config->wo_fapl_id, vfd_config->log_file_path,
                         H5FD_SPLITTER_PATH_MAX);

    /* Delete any existing files on disk.
     */
    HDremove(filename_rw_out);
    HDremove(vfd_config->wo_path);
    HDremove(vfd_config->log_file_path);

done:
    return ret_value;
} /* end splitter_prepare_file_paths() */

/*-------------------------------------------------------------------------
 * Function:    splitter_crate_single_file_at
 *
 * Purpose:     Create a file, optionally w/ dataset.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 * Description:
 *              Create a file at the given location with the given FAPL,
 *              and write data as defined in `data` in a pre-determined location in the file.
 *
 *              If the dataset definition pointer is NULL, no data is written
 *              to the file.
 *
 *              Will always overwrite an existing file with the given name/path.
 *
 *-------------------------------------------------------------------------
 */
static int
splitter_create_single_file_at(const char *filename, hid_t fapl_id, const struct splitter_dataset_def *data)
{
    hid_t file_id   = H5I_INVALID_HID;
    hid_t space_id  = H5I_INVALID_HID;
    hid_t dset_id   = H5I_INVALID_HID;
    int   ret_value = 0;

    if (filename == NULL || *filename == '\0') {
        SPLITTER_TEST_FAULT("filename is invalid\n");
    }
    /* TODO: sanity-check fapl id? */

    file_id = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id);
    if (file_id < 0) {
        SPLITTER_TEST_FAULT("can't create file\n");
    }

    if (data) {
        /* TODO: sanity-check data, if it exists? */
        space_id = H5Screate_simple(data->n_dims, data->dims, NULL);
        if (space_id < 0) {
            SPLITTER_TEST_FAULT("can't create dataspace\n");
        }

        dset_id = H5Dcreate2(file_id, data->dset_name, data->mem_type_id, space_id, H5P_DEFAULT, H5P_DEFAULT,
                             H5P_DEFAULT);
        if (dset_id < 0) {
            SPLITTER_TEST_FAULT("can't create dataset\n");
        }

        if (H5Dwrite(dset_id, data->mem_type_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, data->buf) < 0) {
            SPLITTER_TEST_FAULT("can't write data to dataset\n");
        }

        if (H5Dclose(dset_id) < 0) {
            SPLITTER_TEST_FAULT("can't close dset\n");
        }
        if (H5Sclose(space_id) < 0) {
            SPLITTER_TEST_FAULT("can't close space\n");
        }
    } /* end if data definition is provided */

    if (H5Fclose(file_id) < 0) {
        SPLITTER_TEST_FAULT("can't close file\n");
    }

done:
    if (ret_value < 0) {
        H5E_BEGIN_TRY
        {
            H5Dclose(dset_id);
            H5Sclose(space_id);
            H5Fclose(file_id);
        }
        H5E_END_TRY
    } /* end if error */
    return ret_value;
} /* end splitter_create_single_file_at() */

/*-------------------------------------------------------------------------
 * Function:    splitter_compare_expected_data
 *
 * Purpose:     Compare data within a predermined dataset.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 * Description: Read data from the file at a predetermined location, and
 *              compare its contents byte-for-byte with that expected in
 *              the `data` definition structure.
 *
 *-------------------------------------------------------------------------
 */
static int
splitter_compare_expected_data(hid_t file_id, const struct splitter_dataset_def *data)
{
    hid_t  dset_id = H5I_INVALID_HID;
    int    buf[SPLITTER_SIZE][SPLITTER_SIZE];
    int    expected[SPLITTER_SIZE][SPLITTER_SIZE];
    size_t i         = 0;
    size_t j         = 0;
    int    ret_value = 0;

    if (sizeof((void *)buf) != sizeof(data->buf)) {
        SPLITTER_TEST_FAULT("invariant size of expected data does not match that received!\n");
    }
    memcpy(expected, data->buf, sizeof(expected));

    dset_id = H5Dopen2(file_id, data->dset_name, H5P_DEFAULT);
    if (dset_id < 0) {
        SPLITTER_TEST_FAULT("can't open dataset\n");
    }

    if (H5Dread(dset_id, data->mem_type_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, (void *)buf) < 0) {
        SPLITTER_TEST_FAULT("can't read dataset\n");
    }

    for (i = 0; i < SPLITTER_SIZE; i++) {
        for (j = 0; j < SPLITTER_SIZE; j++) {
            if (buf[i][j] != expected[i][j]) {
                SPLITTER_TEST_FAULT("mismatch in expected data\n");
            }
        }
    }

    if (H5Dclose(dset_id) < 0) {
        SPLITTER_TEST_FAULT("can't close dataset\n");
    }

done:
    if (ret_value < 0) {
        H5E_BEGIN_TRY
        {
            H5Dclose(dset_id);
        }
        H5E_END_TRY
    }
    return ret_value;
} /* end splitter_compare_expected_data() */

/*-------------------------------------------------------------------------
 * Function:    splitter_tentative_open_test()
 *
 * Purpose:     Verifies Splitter behavior with "tentative" H5F_open.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 * Description:
 *              H5F_open() has a two-stage opening process when given a
 *              Read/Write access flag -- first it performs a "tentative
 *              open", where it checks to see whether files already exist
 *              on the system, done in such a way as to not "alter its state"
 *              (i.e., truncate).
 *              This can cause problems with the Splitter VFD, as the
 *              file on the R/W channel might exist already, but that on the
 *              W/O channel will not, and vice-versa.
 *
 *              This test exists to verify that in any event, files will be
 *              created as required.
 *
 *-------------------------------------------------------------------------
 */
static int
splitter_tentative_open_test(hid_t child_fapl_id)
{
    const char                 *filename_tmp = "splitter_tmp.h5";
    char                       *filename_rw  = NULL;
    H5FD_splitter_vfd_config_t *vfd_config   = NULL;
    hid_t                       fapl_id      = H5I_INVALID_HID;
    hid_t                       file_id      = H5I_INVALID_HID;
    int                         buf[SPLITTER_SIZE][SPLITTER_SIZE];        /* for comparison */
    hsize_t                     dims[2] = {SPLITTER_SIZE, SPLITTER_SIZE}; /* for comparison */
    int                         i       = 0;                              /* for comparison */
    int                         j       = 0;                              /* for comparison */
    struct splitter_dataset_def data;                                     /* for comparison */
    int                         ret_value = 0;

    if (NULL == (vfd_config = calloc(1, sizeof(H5FD_splitter_vfd_config_t))))
        SPLITTER_TEST_FAULT("memory allocation for vfd_config struct failed");
    if (NULL == (filename_rw = calloc(H5FD_SPLITTER_PATH_MAX + 1, sizeof(char))))
        SPLITTER_TEST_FAULT("memory allocation for filename_rw string failed");

    /* pre-fill data buffer to write */
    for (i = 0; i < SPLITTER_SIZE; i++) {
        for (j = 0; j < SPLITTER_SIZE; j++) {
            buf[i][j] = i * 100 + j;
        }
    }

    /* Dataset info */
    data.buf         = (void *)buf;
    data.mem_type_id = H5T_NATIVE_INT;
    data.dims        = dims;
    data.n_dims      = 2;
    data.dset_name   = SPLITTER_DATASET_NAME;

    vfd_config->magic          = H5FD_SPLITTER_MAGIC;
    vfd_config->version        = H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION;
    vfd_config->ignore_wo_errs = false;
    vfd_config->rw_fapl_id     = child_fapl_id;
    vfd_config->wo_fapl_id     = child_fapl_id;

    if (splitter_prepare_file_paths(vfd_config, filename_rw) < 0) {
        SPLITTER_TEST_FAULT("can't prepare splitter file paths\n");
    }

    /* Create a new fapl to use the SPLITTER file driver */
    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) == H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("can't create FAPL ID\n");
    }
    if (H5Pset_fapl_splitter(fapl_id, vfd_config) < 0) {
        SPLITTER_TEST_FAULT("can't set splitter FAPL\n");
    }
    if (H5Pget_driver(fapl_id) != H5FD_SPLITTER) {
        SPLITTER_TEST_FAULT("set FAPL not SPLITTER\n");
    }

    /* Create instance of file on disk.
     * Will be copied verbatim as needed, to avoid issues where differences in
     * the creation time would befoul comparisons.
     */
    if (splitter_create_single_file_at(filename_tmp, child_fapl_id, &data) < 0) {
        SPLITTER_TEST_FAULT("can't write W/O file\n");
    }

    /*
     * H5Fopen() with RDWR access.
     * Neither file exist already
     * Should fail.
     */

    H5E_BEGIN_TRY
    {
        file_id = H5Fopen(filename_rw, H5F_ACC_RDWR, fapl_id);
    }
    H5E_END_TRY
    if (file_id != H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("open with both nonexistent files unexpectedly succeeded\n");
    }
    if (file_exists(filename_rw, child_fapl_id)) {
        SPLITTER_TEST_FAULT("R/W file unexpectedly created\n");
    }
    if (file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("W/O file unexpectedly created\n");
    }

    /*
     * H5Fopen() with RDWR access.
     * Only W/O file present.
     * Should fail.
     */

    if (h5_duplicate_file_by_bytes(filename_tmp, vfd_config->wo_path) < 0) {
        SPLITTER_TEST_FAULT("Can't create W/O file copy.\n");
    }
    H5E_BEGIN_TRY
    {
        file_id = H5Fopen(filename_rw, H5F_ACC_RDWR, fapl_id);
    }
    H5E_END_TRY
    if (file_id != H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("open with nonexistent R/W file unexpectedly succeeded\n");
    }
    if (file_exists(filename_rw, child_fapl_id)) {
        SPLITTER_TEST_FAULT("R/W file unexpectedly created\n");
    }
    if (!file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("W/O file mysteriously disappeared\n");
    }
    HDremove(vfd_config->wo_path);
    if (file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("failed to remove W/O file\n");
    }

    /*
     * H5Fopen() with RDWR access.
     * Only R/W file present.
     * Should fail.
     */

    if (h5_duplicate_file_by_bytes(filename_tmp, filename_rw) < 0) {
        SPLITTER_TEST_FAULT("Can't create R/W file copy.\n");
    }
    H5E_BEGIN_TRY
    {
        file_id = H5Fopen(filename_rw, H5F_ACC_RDWR, fapl_id);
    }
    H5E_END_TRY
    if (file_id != H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("open with nonexistent W/O unexpectedly succeeded\n");
    }
    if (!file_exists(filename_rw, child_fapl_id)) {
        SPLITTER_TEST_FAULT("R/W file mysteriously disappeared\n");
    }
    if (file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("W/O file unexpectedly created\n");
    }

    /*
     * H5Fopen() with RDWR access.
     * Both files present.
     */

    if (h5_duplicate_file_by_bytes(filename_tmp, vfd_config->wo_path) < 0) {
        SPLITTER_TEST_FAULT("Can't create W/O file copy.\n");
    }
    file_id = H5Fopen(filename_rw, H5F_ACC_RDWR, fapl_id);
    if (file_id == H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("file-open failed with both present\n");
    }
    /* Open successful; close file then inspect presence again */
    if (H5Fclose(file_id) < 0) {
        SPLITTER_TEST_FAULT("can't close file ID\n");
    }
    if (!file_exists(filename_rw, child_fapl_id)) {
        SPLITTER_TEST_FAULT("R/W file mysteriously disappeared\n");
    }
    if (!file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("W/O file mysteriously disappeared\n");
    }

    /*
     * H5Fcreate() with TRUNC access.
     * Both files present.
     */

    file_id = H5Fcreate(filename_rw, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id);
    if (file_id == H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("file-open failed with both present\n");
    }
    /* Open successful; close file then inspect presence again */
    if (H5Fclose(file_id) < 0) {
        SPLITTER_TEST_FAULT("can't close file ID\n");
    }
    if (!file_exists(filename_rw, child_fapl_id)) {
        SPLITTER_TEST_FAULT("R/W file mysteriously disappeared\n");
    }
    if (!file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("W/O file mysteriously disappeared\n");
    }
    if (h5_compare_file_bytes(filename_rw, vfd_config->wo_path) < 0) {
        SPLITTER_TEST_FAULT("files are not byte-for-byte equivalent\n");
    }
    HDremove(filename_rw);
    HDremove(vfd_config->wo_path);

    /*
     * H5Fcreate() with TRUNC access.
     * R/W already exists.
     */

    if (h5_duplicate_file_by_bytes(filename_tmp, filename_rw) < 0) {
        SPLITTER_TEST_FAULT("Can't create R/W file copy.\n");
    }
    if (file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("failed to remove W/O file\n");
    }
    file_id = H5Fcreate(filename_rw, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id);
    if (file_id == H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("file-open failed with both present\n");
    }
    /* Open successful; close file then inspect presence again */
    if (H5Fclose(file_id) < 0) {
        SPLITTER_TEST_FAULT("can't close file ID\n");
    }
    if (!file_exists(filename_rw, child_fapl_id)) {
        SPLITTER_TEST_FAULT("R/W file mysteriously disappeared\n");
    }
    if (!file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("W/O file mysteriously disappeared\n");
    }
    if (h5_compare_file_bytes(filename_rw, vfd_config->wo_path) < 0) {
        SPLITTER_TEST_FAULT("files are not byte-for-byte equivalent\n");
    }
    HDremove(filename_rw);
    HDremove(vfd_config->wo_path);

    /*
     * H5Fcreate() with TRUNC access.
     * Only W/O present.
     */

    if (h5_duplicate_file_by_bytes(filename_tmp, vfd_config->wo_path) < 0) {
        SPLITTER_TEST_FAULT("Can't create W/O file copy.\n");
    }
    if (file_exists(filename_rw, child_fapl_id)) {
        SPLITTER_TEST_FAULT("failed to remove R/W file\n");
    }
    file_id = H5Fcreate(filename_rw, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id);
    if (file_id == H5I_INVALID_HID) {
        SPLITTER_TEST_FAULT("file-open failed with both present\n");
    }
    /* Open successful; close file then inspect presence again */
    if (H5Fclose(file_id) < 0) {
        SPLITTER_TEST_FAULT("can't close file ID\n");
    }
    if (!file_exists(filename_rw, child_fapl_id)) {
        SPLITTER_TEST_FAULT("R/W file mysteriously disappeared\n");
    }
    if (!file_exists(vfd_config->wo_path, child_fapl_id)) {
        SPLITTER_TEST_FAULT("W/O file mysteriously disappeared\n");
    }
    if (h5_compare_file_bytes(filename_rw, vfd_config->wo_path) < 0) {
        SPLITTER_TEST_FAULT("files are not byte-for-byte equivalent\n");
    }
    HDremove(filename_rw);
    HDremove(vfd_config->wo_path);

    /* H5Fcreate with both files absent is tested elsewhere */

    /*
     * Cleanup
     */

    if (H5Pclose(fapl_id) < 0) {
        SPLITTER_TEST_FAULT("can't close splitter FAPL ID\n");
    }

done:
    if (ret_value < 0) {
        H5E_BEGIN_TRY
        {
            H5Pclose(fapl_id);
            H5Fclose(file_id);
        }
        H5E_END_TRY
    }

    free(vfd_config);
    free(filename_rw);

    return ret_value;
} /* end splitter_tentative_open_test() */

/*-------------------------------------------------------------------------
 * Function:    file_exists()
 *
 * Purpose:     Determine whether a file exists on-system
 *
 * Return:      Non-zero (1) if it exists (H5Fopen successful),
 *              zero (0) if absent (cannot be opened).
 *
 * Description: Attempt H5Fopen with the given FAPL ID and RDONLY access flag.
 *
 *-------------------------------------------------------------------------
 */
static int
file_exists(const char *filename, hid_t fapl_id)
{
    hid_t file_id   = H5I_INVALID_HID;
    int   ret_value = 0;

    H5E_BEGIN_TRY
    {
        file_id = H5Fopen(filename, H5F_ACC_RDONLY, fapl_id);
    }
    H5E_END_TRY
    if (file_id != H5I_INVALID_HID) {
        ret_value = 1;
        if (H5Fclose(file_id) < 0) {
            FAIL_PUTS_ERROR("can't close file ID\n");
        }
    }

    return ret_value;

error:
    H5E_BEGIN_TRY
    {
        H5Fclose(file_id);
    }
    H5E_END_TRY
    return ret_value;
} /* end file_exists() */

/*-------------------------------------------------------------------------
 * Function:    test_splitter
 *
 * Purpose:     Tests the Splitter VFD
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 * Description:
 *              This test function uses the Splitter VFD to produce a r/w
 *              file and a w/o file. It will verify that the two files
 *              are identical.
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_splitter(void)
{
    int                         buf[SPLITTER_SIZE][SPLITTER_SIZE];
    hsize_t                     dims[2]       = {SPLITTER_SIZE, SPLITTER_SIZE};
    hid_t                       child_fapl_id = H5I_INVALID_HID;
    int                         i             = 0;
    int                         j             = 0;
    struct splitter_dataset_def data;

    TESTING("SPLITTER file driver");

    /* pre-fill data buffer to write */
    for (i = 0; i < SPLITTER_SIZE; i++) {
        for (j = 0; j < SPLITTER_SIZE; j++) {
            buf[i][j] = i * 100 + j;
        }
    }

    /* Dataset info */
    data.buf         = (void *)buf;
    data.mem_type_id = H5T_NATIVE_INT;
    data.dims        = dims;
    data.n_dims      = 2;
    data.dset_name   = SPLITTER_DATASET_NAME;

    /* Stand-in for manual FAPL creation
     * Enables verification with arbitrary VFDs via `make check-vfd`
     */
    child_fapl_id = h5_fileaccess();
    if (child_fapl_id < 0) {
        TEST_ERROR;
    }

    if (!driver_is_splitter_compatible(child_fapl_id)) {
        SKIPPED();
        printf("  given driver is not Splitter W/O compatible.\n");
        return 0;
    }

    /* Test Read-Only access, including when a file on the W/O channel
     * does not exist.
     */
    if (splitter_RO_test(&data, child_fapl_id) < 0) {
        TEST_ERROR;
    }

    /* Test opening of files when the W/O channel does not exist.
     */
    if (splitter_tentative_open_test(child_fapl_id) < 0) {
        TEST_ERROR;
    }

    /* Test file creation, utilizing different child FAPLs (default vs.
     * specified), logfile, and Write Channel error ignoring behavior.
     */
    for (i = 0; i < 4; i++) {
        bool  ignore_wo_errors     = (i & 1) ? true : false;
        bool  provide_logfile_path = (i & 2) ? true : false;
        hid_t child_fapl_ids[2]    = {H5P_DEFAULT, H5P_DEFAULT};

        /* Test child driver definition/default combination */
        for (j = 0; j < 4; j++) {

            child_fapl_ids[0] = (j & 1) ? child_fapl_id : H5P_DEFAULT;
            child_fapl_ids[1] = (j & 2) ? child_fapl_id : H5P_DEFAULT;

            if (run_splitter_test(&data, ignore_wo_errors, provide_logfile_path, child_fapl_ids) < 0) {
                TEST_ERROR;
            }

        } /* end for child fapl definition/pairing */

    } /* end for behavior-flag loops */

    /* TODO: SWMR open? */
    /* Concurrent opens with both drivers using the Splitter */

    if (H5Pclose(child_fapl_id) == FAIL) {
        TEST_ERROR;
    }

    PASSED();
    return 0;

error:
    if (child_fapl_id != H5I_INVALID_HID)
        H5Pclose(child_fapl_id);

    return -1;
} /* end test_splitter() */

#undef SPLITTER_TEST_FAULT

/*****************************************************************************
 *
 * Function    setup_rand()
 *
 * Purpose:    Use gettimeofday() to obtain a seed for rand(), print the
 *             seed to stdout, and then pass it to srand().
 *
 *             This is a version of the same routine in
 *             testpar/t_cache.c modified for use in serial tests.
 *
 * Return:     void.
 *
 *****************************************************************************/
static void
setup_rand(void)
{
    bool           use_predefined_seed = false;
    unsigned       predefined_seed     = 18669;
    unsigned       seed;
    struct timeval tv;

    if (use_predefined_seed) {

        seed = predefined_seed;

        fprintf(stdout, "\n%s: predefined_seed = %d.\n\n", __func__, seed);
        fflush(stdout);

        HDsrand(seed);
    }
    else {

        if (HDgettimeofday(&tv, NULL) != 0) {

            fprintf(stdout, "\n%s: gettimeofday() failed -- srand() not called.\n\n", __func__);
            fflush(stdout);
        }
        else {

            seed = (unsigned)tv.tv_usec;

            fprintf(stdout, "\n%s: seed = %d.\n\n", __func__, seed);
            fflush(stdout);

            HDsrand(seed);
        }
    }

    return;

} /* setup_rand() */

/*
 * Callback implementations for ctl feature testing VFD
 */
static H5FD_t *
H5FD__ctl_test_vfd_open(const char H5_ATTR_UNUSED *name, unsigned H5_ATTR_UNUSED flags,
                        hid_t H5_ATTR_UNUSED fapl_id, haddr_t H5_ATTR_UNUSED maxaddr)
{
    return calloc(1, sizeof(H5FD_t));
}
static herr_t
H5FD__ctl_test_vfd_close(H5FD_t H5_ATTR_UNUSED *_file)
{
    free(_file);
    return SUCCEED;
}
static haddr_t
H5FD__ctl_test_vfd_get_eoa(const H5FD_t H5_ATTR_UNUSED *file, H5FD_mem_t H5_ATTR_UNUSED type)
{
    return HADDR_UNDEF;
}
static herr_t
H5FD__ctl_test_vfd_set_eoa(H5FD_t H5_ATTR_UNUSED *_file, H5FD_mem_t H5_ATTR_UNUSED type,
                           haddr_t H5_ATTR_UNUSED addr)
{
    return FAIL;
}
static haddr_t
H5FD__ctl_test_vfd_get_eof(const H5FD_t H5_ATTR_UNUSED *file, H5FD_mem_t H5_ATTR_UNUSED type)
{
    return HADDR_UNDEF;
}
static herr_t
H5FD__ctl_test_vfd_read(H5FD_t H5_ATTR_UNUSED *_file, H5FD_mem_t H5_ATTR_UNUSED type,
                        hid_t H5_ATTR_UNUSED fapl_id, haddr_t H5_ATTR_UNUSED addr, size_t H5_ATTR_UNUSED size,
                        void H5_ATTR_UNUSED *buf)
{
    return FAIL;
}
static herr_t
H5FD__ctl_test_vfd_write(H5FD_t H5_ATTR_UNUSED *_file, H5FD_mem_t H5_ATTR_UNUSED type,
                         hid_t H5_ATTR_UNUSED fapl_id, haddr_t H5_ATTR_UNUSED addr,
                         size_t H5_ATTR_UNUSED size, const void H5_ATTR_UNUSED *buf)
{
    return FAIL;
}
static herr_t
H5FD__ctl_test_vfd_ctl(H5FD_t H5_ATTR_UNUSED *_file, uint64_t op_code, uint64_t flags,
                       const void H5_ATTR_UNUSED *input, void H5_ATTR_UNUSED **output)
{
    herr_t ret_value = SUCCEED;

    switch (op_code) {
        /* Op code for testing purposes */
        case H5FD_CTL_TEST_OPCODE:
            break;

        /* Unknown op code */
        default:
            if (flags & H5FD_CTL_FAIL_IF_UNKNOWN_FLAG)
                ret_value = FAIL;
            break;
    }

    return ret_value;
}

/* Minimal VFD for ctl feature tests */
static const H5FD_class_t H5FD_ctl_test_vfd_g = {
    H5FD_CLASS_VERSION,         /* struct version        */
    (H5FD_class_value_t)201,    /* value                 */
    "ctl_test_vfd",             /* name                  */
    HADDR_MAX,                  /* maxaddr               */
    H5F_CLOSE_SEMI,             /* fc_degree             */
    NULL,                       /* terminate             */
    NULL,                       /* sb_size               */
    NULL,                       /* sb_encode             */
    NULL,                       /* sb_decode             */
    0,                          /* fapl_size             */
    NULL,                       /* fapl_get              */
    NULL,                       /* fapl_copy             */
    NULL,                       /* fapl_free             */
    0,                          /* dxpl_size             */
    NULL,                       /* dxpl_copy             */
    NULL,                       /* dxpl_free             */
    H5FD__ctl_test_vfd_open,    /* open                  */
    H5FD__ctl_test_vfd_close,   /* close                 */
    NULL,                       /* cmp                   */
    NULL,                       /* query                 */
    NULL,                       /* get_type_map          */
    NULL,                       /* alloc                 */
    NULL,                       /* free                  */
    H5FD__ctl_test_vfd_get_eoa, /* get_eoa               */
    H5FD__ctl_test_vfd_set_eoa, /* set_eoa               */
    H5FD__ctl_test_vfd_get_eof, /* get_eof               */
    NULL,                       /* get_handle            */
    H5FD__ctl_test_vfd_read,    /* read                  */
    H5FD__ctl_test_vfd_write,   /* write                 */
    NULL,                       /* read_vector           */
    NULL,                       /* write_vector          */
    NULL,                       /* read_selection        */
    NULL,                       /* write_selection       */
    NULL,                       /* flush                 */
    NULL,                       /* truncate              */
    NULL,                       /* lock                  */
    NULL,                       /* unlock                */
    NULL,                       /* del                   */
    H5FD__ctl_test_vfd_ctl,     /* ctl                   */
    H5FD_FLMAP_DICHOTOMY        /* fl_map                */
};

/*-------------------------------------------------------------------------
 * Function:    run_ctl_test
 *
 * Purpose:     Helper method for VFD "ctl" callback test
 *
 * Return:      Non-negative on success/Negative on failure
 *
 *-------------------------------------------------------------------------
 */
static herr_t
run_ctl_test(uint64_t op_code, uint64_t flags, ctl_test_opc_type opc_type, hid_t fapl_id)
{
    bool    fail_if_unknown    = false;
    bool    routing_flag_set   = false;
    bool    is_passthrough_vfd = false;
    bool    expect_fail        = false;
    H5FD_t *file_drv_ptr       = NULL;
    herr_t  ctl_result         = SUCCEED;
    hid_t   driver_id          = H5I_INVALID_HID;
    char    filename[1024];

    /* Check for a few ctl function flags */
    fail_if_unknown  = (flags & H5FD_CTL_FAIL_IF_UNKNOWN_FLAG);
    routing_flag_set = (flags & H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG);

    /* Determine if the top-level VFD is a passthrough VFD */
    if ((driver_id = H5Pget_driver(fapl_id)) < 0)
        PUTS_ERROR("couldn't get VFD ID from FAPL");

    is_passthrough_vfd = ((driver_id == H5FD_SPLITTER) || (driver_id == H5FD_MULTI));

    /*
     * "Open" testing file. Note that our VFD for testing the ctl
     * feature doesn't actually create or open files, so we don't
     * need to create the testing file; we just need the VFD to
     * give us a pointer to a H5FD_t structure.
     */
    h5_fixname(FILENAME[14], fapl_id, filename, sizeof(filename));
    if (NULL == (file_drv_ptr = H5FDopen(filename, H5F_ACC_RDWR, fapl_id, HADDR_UNDEF)))
        PUTS_ERROR("couldn't get pointer to H5FD_t structure");

    /* Determine whether the H5FDctl call is expected to fail */
    expect_fail = fail_if_unknown && (CTL_OPC_UNKNOWN == opc_type);
    if (is_passthrough_vfd) {
        /* Should fail if op code is unknown to passthrough VFD
         * (but known to terminal VFD), no routing flag is specified
         * and the "fail if unknown" flag is specified.
         */
        expect_fail =
            expect_fail || ((CTL_OPC_KNOWN_TERMINAL == opc_type) && !routing_flag_set && fail_if_unknown);
    }

    /* Issue opcode to VFD */
    if (expect_fail) {
        H5E_BEGIN_TRY
        {
            ctl_result = H5FDctl(file_drv_ptr, op_code, flags, NULL, NULL);
        }
        H5E_END_TRY
    }
    else
        ctl_result = H5FDctl(file_drv_ptr, op_code, flags, NULL, NULL);

    /* Verify result of H5FDctl call */
    if (expect_fail) {
        if (ctl_result == SUCCEED)
            PUTS_ERROR("H5FDctl call succeeded when it should have failed");
    }
    else {
        if (ctl_result != SUCCEED)
            PUTS_ERROR("H5FDctl call failed when it should have succeeded");
    }

    /* Close H5FD_t structure pointer */
    if (H5FDclose(file_drv_ptr) < 0)
        PUTS_ERROR("couldn't close H5FD_t structure pointer");
    file_drv_ptr = NULL;

    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5FDclose(file_drv_ptr);
    }
    H5E_END_TRY

    return -1;
}

/*-------------------------------------------------------------------------
 * Function:    test_ctl
 *
 * Purpose:     Tests the VFD "ctl" callback
 *
 * Return:      Non-negative on success/Negative on failure
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_ctl(void)
{
    H5FD_splitter_vfd_config_t *splitter_config = NULL;
    uint64_t                    op_code;
    uint64_t                    flags;
    hid_t                       driver_id   = H5I_INVALID_HID;
    hid_t                       fapl_id     = H5I_INVALID_HID;
    hid_t                       sub_fapl_id = H5I_INVALID_HID;

    TESTING("VFD ctl callback");
    HDputs("");

    /* Register VFD for test */
    if ((driver_id = H5FDregister(&H5FD_ctl_test_vfd_g)) < 0)
        PUTS_ERROR("couldn't register VFD for testing");

    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        PUTS_ERROR("couldn't create FAPL");
    if (H5Pset_driver(fapl_id, driver_id, NULL) < 0)
        PUTS_ERROR("couldn't set testing VFD on FAPL");

    TESTING_2("known op code to terminal VFD (without fail on unknown flag)");

    op_code = H5FD_CTL_TEST_OPCODE;
    flags   = 0;

    /* H5FDctl call should succeed normally */
    if (run_ctl_test(op_code, flags, CTL_OPC_KNOWN_TERMINAL, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("known op code to terminal VFD (with fail on unknown flag)");

    op_code = H5FD_CTL_TEST_OPCODE;
    flags   = H5FD_CTL_FAIL_IF_UNKNOWN_FLAG;

    /* H5FDctl call should succeed normally */
    if (run_ctl_test(op_code, flags, CTL_OPC_KNOWN_TERMINAL, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("known op code to terminal VFD (without fail on unknown flag/route to terminal VFD)");

    op_code = H5FD_CTL_TEST_OPCODE;
    flags   = H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG;

    /* H5FDctl call should succeed normally */
    if (run_ctl_test(op_code, flags, CTL_OPC_KNOWN_TERMINAL, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("known op code to terminal VFD (with fail on unknown flag/route to terminal VFD)");

    op_code = H5FD_CTL_TEST_OPCODE;
    flags   = H5FD_CTL_FAIL_IF_UNKNOWN_FLAG | H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG;

    /* H5FDctl call should succeed normally */
    if (run_ctl_test(op_code, flags, CTL_OPC_KNOWN_TERMINAL, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("unknown op code to terminal VFD (without fail on unknown flag)");

    op_code = H5FD_CTL_OPC_RESERVED;
    flags   = 0;

    /* H5FDctl call should silently ignore unknown op code and succeed */
    if (run_ctl_test(op_code, flags, CTL_OPC_UNKNOWN, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("unknown op code to terminal VFD (with fail on unknown flag)");

    op_code = H5FD_CTL_OPC_RESERVED;
    flags   = H5FD_CTL_FAIL_IF_UNKNOWN_FLAG;

    /* H5FDctl call should fail due to 'fail if unknown' flag being specified */
    if (run_ctl_test(op_code, flags, CTL_OPC_UNKNOWN, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("unknown op code to terminal VFD (without fail on unknown flag/route to terminal VFD)");

    op_code = H5FD_CTL_OPC_RESERVED;
    flags   = H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG;

    /* H5FDctl call should silently ignore unknown op code and succeed */
    if (run_ctl_test(op_code, flags, CTL_OPC_UNKNOWN, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("unknown op code to terminal VFD (with fail on unknown flag/route to terminal VFD)");

    op_code = H5FD_CTL_OPC_RESERVED;
    flags   = H5FD_CTL_FAIL_IF_UNKNOWN_FLAG | H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG;

    /* H5FDctl call should fail due to 'fail if unknown' flag being specified */
    if (run_ctl_test(op_code, flags, CTL_OPC_UNKNOWN, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    /* Set up splitter VFD config */
    if (NULL == (splitter_config = calloc(1, sizeof(H5FD_splitter_vfd_config_t))))
        TEST_ERROR;

    splitter_config->magic          = H5FD_SPLITTER_MAGIC;
    splitter_config->version        = H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION;
    splitter_config->ignore_wo_errs = true;
    splitter_config->rw_fapl_id     = H5P_DEFAULT;
    splitter_config->wo_fapl_id     = H5P_DEFAULT;
    h5_fixname(FILENAME[15], splitter_config->wo_fapl_id, splitter_config->wo_path, H5FD_SPLITTER_PATH_MAX);

    if ((sub_fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        PUTS_ERROR("couldn't create FAPL");
    if (H5Pset_driver(sub_fapl_id, driver_id, NULL) < 0)
        PUTS_ERROR("couldn't set testing VFD on FAPL");
    splitter_config->rw_fapl_id = sub_fapl_id;

    if (H5Pset_fapl_splitter(fapl_id, splitter_config) < 0)
        PUTS_ERROR("couldn't set splitter VFD on FAPL");

    TESTING_2("known op code through passthrough VFD to terminal VFD (without fail on unknown flag/no "
              "routing flag)");

    op_code = H5FD_CTL_TEST_OPCODE;
    flags   = 0;

    /*
     * H5FDctl call should silently ignore unknown op code in
     * passthrough VFD since no routing flag is specified and
     * 'fail if unknown' flag is not specified.
     */
    if (run_ctl_test(op_code, flags, CTL_OPC_KNOWN_TERMINAL, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2(
        "known op code through passthrough VFD to terminal VFD (with fail on unknown flag/no routing flag)");

    op_code = H5FD_CTL_TEST_OPCODE;
    flags   = H5FD_CTL_FAIL_IF_UNKNOWN_FLAG;

    /*
     * H5FDctl call should fail since op code is unknown to
     * passthrough VFD (though known to terminal VFD), no
     * routing flag is specified and the 'fail if unknown'
     * flag is specified.
     */
    if (run_ctl_test(op_code, flags, CTL_OPC_KNOWN_TERMINAL, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("known op code through passthrough VFD to terminal VFD (without fail on unknown flag/route to "
              "terminal VFD)");

    op_code = H5FD_CTL_TEST_OPCODE;
    flags   = H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG;

    /*
     * H5Dctl call should succeed since the passthrough VFD
     * doesn't recognize the op code, but has been instructed
     * to route it down to the terminal VFD.
     */
    if (run_ctl_test(op_code, flags, CTL_OPC_KNOWN_TERMINAL, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("known op code through passthrough VFD to terminal VFD (with fail on unknown flag/route to "
              "terminal VFD)");

    op_code = H5FD_CTL_TEST_OPCODE;
    flags   = H5FD_CTL_FAIL_IF_UNKNOWN_FLAG | H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG;

    /*
     * H5Dctl call should succeed since the passthrough VFD
     * doesn't recognize the op code, but has been instructed
     * to route it down to the terminal VFD.
     */
    if (run_ctl_test(op_code, flags, CTL_OPC_KNOWN_TERMINAL, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("unknown op code to passthrough VFD (without fail on unknown flag)");

    op_code = H5FD_CTL_OPC_RESERVED;
    flags   = 0;

    /*
     * H5FDctl call should silently ignore unknown op code in
     * passthrough VFD since no routing flag is specified and
     * 'fail if unknown' flag is not specified.
     */
    if (run_ctl_test(op_code, flags, CTL_OPC_UNKNOWN, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("unknown op code to passthrough VFD (with fail on unknown flag)");

    op_code = H5FD_CTL_OPC_RESERVED;
    flags   = H5FD_CTL_FAIL_IF_UNKNOWN_FLAG;

    /*
     * H5FDctl call should fail since op code is unknown to
     * passthrough VFD, no routing flag is specified and the
     * 'fail if unknown' flag is specified.
     */
    if (run_ctl_test(op_code, flags, CTL_OPC_UNKNOWN, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("unknown op code to passthrough VFD (without fail on unknown flag/route to terminal VFD)");

    op_code = H5FD_CTL_OPC_RESERVED;
    flags   = H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG;

    /*
     * H5Dctl call should succeed since the passthrough VFD
     * doesn't recognize the op code, but has been instructed
     * to route it down to the terminal VFD and the 'fail if
     * unknown' flag has not been specified. Therefore, the
     * terminal VFD should silently ignore the unknown op
     * code.
     */
    if (run_ctl_test(op_code, flags, CTL_OPC_UNKNOWN, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("unknown op code to passthrough VFD (with fail on unknown flag/route to terminal VFD)");

    op_code = H5FD_CTL_OPC_RESERVED;
    flags   = H5FD_CTL_FAIL_IF_UNKNOWN_FLAG | H5FD_CTL_ROUTE_TO_TERMINAL_VFD_FLAG;

    /*
     * H5Dctl call should fail since the passthrough VFD
     * doesn't recognize the op code, but has been instructed
     * to route it down to the terminal VFD and the 'fail if
     * unknown' flag has been specified. Therefore, the
     * terminal VFD will throw an error for the unknown op
     * code.
     */
    if (run_ctl_test(op_code, flags, CTL_OPC_UNKNOWN, fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    TESTING_2("test cleanup");

    free(splitter_config);

    if (H5FDunregister(driver_id) < 0)
        TEST_ERROR;
    if (H5Pclose(sub_fapl_id) < 0)
        TEST_ERROR;
    if (H5Pclose(fapl_id) < 0)
        TEST_ERROR;

    PASSED();

    return 0;

error:
    H5E_BEGIN_TRY
    {
        if (splitter_config)
            free(splitter_config);
        H5FDunregister(driver_id);
        H5Pclose(sub_fapl_id);
        H5Pclose(fapl_id);
    }
    H5E_END_TRY

    return -1;
}

/*-------------------------------------------------------------------------
 * Function:    test_vector_io__setup_v
 *
 * Purpose:     Construct and initialize a vector of I/O requests used
 *              to test vector I/O.  Note that while the vectors are
 *              allocated and initialized, they are not assigned
 *              base addresses.
 *
 *              All arrays parameters are presumed to be of length
 *              count.
 *
 * Return:      Return true if successful, and false if any errors
 *              are encountered.
 *
 *-------------------------------------------------------------------------
 */

static bool
test_vector_io__setup_v(uint32_t count, H5FD_mem_t types[], haddr_t addrs[], size_t sizes[],
                        const void *write_bufs[], void *read_bufs[], char base_fill_char)
{
    bool       result    = true; /* will set to false on failure */
    char       fill_char = base_fill_char;
    void      *temp_buf  = NULL;
    uint32_t   i;
    uint32_t   j;
    H5FD_mem_t mem_types[6] = {H5FD_MEM_SUPER, H5FD_MEM_BTREE, H5FD_MEM_DRAW,
                               H5FD_MEM_GHEAP, H5FD_MEM_LHEAP, H5FD_MEM_OHDR};

    /* set the arrays of pointers to the write and read buffers to NULL,
     * so that we can release memory on failure.
     */
    for (i = 0; i < count; i++) {

        write_bufs[i] = NULL;
        read_bufs[i]  = NULL;
    }

    for (i = 0; i < count; i++) {
        types[i] = mem_types[i % 6];

        addrs[i] = HADDR_UNDEF;

        sizes[i] = (size_t)((rand() & 1023) + 1);

        temp_buf     = malloc(sizes[i] + 1);
        read_bufs[i] = malloc(sizes[i] + 1);

        if ((NULL == temp_buf) || (NULL == read_bufs[i])) {

            fprintf(stderr, "%s: can't malloc read / write bufs.\n", __func__);
            result = false;
            break;
        }

        for (j = 0; j < sizes[i]; j++) {

            ((char *)temp_buf)[j]       = fill_char;
            ((char *)(read_bufs[i]))[j] = '\0';
        }

        ((char *)temp_buf)[sizes[i]]       = '\0';
        ((char *)(read_bufs[i]))[sizes[i]] = '\0';

        write_bufs[i] = (const void *)temp_buf;
        temp_buf      = NULL;

        fill_char++;
    }

    if (!result) { /* free buffers */

        free(temp_buf);

        for (i = 0; i < count; i++) {

            if (write_bufs[i]) {

                h5_free_const(write_bufs[i]);
                write_bufs[i] = NULL;
            }

            if (read_bufs[i]) {

                free(read_bufs[i]);
                read_bufs[i] = NULL;
            }
        }
    }

    return (result);

} /* end test_vector_io__setup_v() */

/*-------------------------------------------------------------------------
 * Function:    test_vector_io__setup_fixed_size_v
 *
 * Purpose:     To test the optimization allowing short sizes and types
 *              arrays, construct and initialize a vector of I/O requests
 *              with each request of the same size and type, and use the
 *              optimizatin to allow reduced length sizes and types
 *              vectors.  Since the function is supplied with types and
 *              sizes vectors of length count, simulate shorter vectors
 *              by initializing the sizes and types vectors to values
 *              that will cause failure if used.
 *
 *              All arrays parameters are presumed to be of length
 *              count. Count is presumed to be a power of 2, and at
 *              least 2.
 *
 * Return:      Return true if successful, and false if any errors
 *              are encountered.
 *
 *-------------------------------------------------------------------------
 */

static bool
test_vector_io__setup_fixed_size_v(uint32_t count, H5FD_mem_t types[], haddr_t addrs[], size_t sizes[],
                                   const void *write_bufs[], void *read_bufs[], char base_fill_char)
{
    bool       result    = true; /* will set to false on failure */
    char       fill_char = base_fill_char;
    void      *temp_buf  = NULL;
    uint32_t   fix_point;
    uint32_t   i;
    uint32_t   j;
    uint32_t   k;
    H5FD_mem_t mem_types[6] = {H5FD_MEM_SUPER, H5FD_MEM_BTREE, H5FD_MEM_DRAW,
                               H5FD_MEM_GHEAP, H5FD_MEM_LHEAP, H5FD_MEM_OHDR};

    /* set the arrays of pointers to the write and read buffers to NULL,
     * so that we can release memory on failure.
     *
     * Set the types[] and sizes[] arrays to invalid / improbable values
     * so that use of these values will trigger failures.
     */
    for (i = 0; i < count; i++) {

        write_bufs[i] = NULL;
        read_bufs[i]  = NULL;
        types[i]      = H5FD_MEM_NTYPES;
        sizes[i]      = SIZE_MAX;
    }

    /* randomly select the point in the vector after which all entries are
     * fixed at the same size and type.  Observe that 0 <= fix_point <
     * count / 2.
     */
    fix_point = ((uint32_t)rand() & (count - 1)) / 2;

    assert(fix_point < count / 2);

    for (i = 0; i < count; i++) {

        if (i <= fix_point) {

            types[i] = mem_types[i % 6];

            addrs[i] = HADDR_UNDEF;

            sizes[i] = (size_t)((rand() & 1023) + 1);

            temp_buf     = malloc(sizes[i] + 1);
            read_bufs[i] = malloc(sizes[i] + 1);
        }
        else {

            if (i == fix_point + 1) {

                /* set the sentinels that indicate that all remaining
                 * types and sizes are the same as the previous value.
                 */
                types[i] = H5FD_MEM_NOLIST;
                sizes[i] = 0;
            }

            addrs[i] = HADDR_UNDEF;

            temp_buf     = malloc(sizes[fix_point] + 1);
            read_bufs[i] = malloc(sizes[fix_point] + 1);
        }

        if ((NULL == temp_buf) || (NULL == read_bufs[i])) {

            fprintf(stderr, "%s: can't malloc read / write bufs.\n", __func__);
            result = false;
            break;
        }

        /* need to avoid examining sizes beyond the fix_point */
        k = MIN(i, fix_point);

        for (j = 0; j < sizes[k]; j++) {

            ((char *)temp_buf)[j]       = fill_char;
            ((char *)(read_bufs[i]))[j] = '\0';
        }

        ((char *)temp_buf)[sizes[k]]       = '\0';
        ((char *)(read_bufs[i]))[sizes[k]] = '\0';

        write_bufs[i] = (const void *)temp_buf;
        temp_buf      = NULL;

        fill_char++;
    }

    if (!result) { /* free buffers */

        free(temp_buf);

        for (i = 0; i < count; i++) {

            if (write_bufs[i]) {

                h5_free_const(write_bufs[i]);
                write_bufs[i] = NULL;
            }

            if (read_bufs[i]) {

                free(read_bufs[i]);
                read_bufs[i] = NULL;
            }
        }
    }

    return (result);

} /* end test_vector_io__setup_fixed_size_v() */

/*-------------------------------------------------------------------------
 * Function:    test_vector_io__read_v_indiv
 *
 * Purpose:     Read the supplied vector as a sequence of individual
 *              reads.
 *
 *              All arrays parameters are presumed to be of length
 *              count.
 *
 * Return:      Return true if successful, and false if any errors
 *              are encountered.
 *
 *-------------------------------------------------------------------------
 */

static bool
test_vector_io__read_v_indiv(H5FD_t *lf, uint32_t count, H5FD_mem_t types[], haddr_t addrs[], size_t sizes[],
                             void *read_bufs[])
{
    bool       size_fixed = false;
    bool       type_fixed = false;
    bool       result     = true; /* will set to false on failure */
    bool       verbose    = false;
    uint32_t   i;
    size_t     size = SIZE_MAX;
    H5FD_mem_t type = H5FD_MEM_NTYPES;

    for (i = 0; i < count; i++) {

        SET_SIZE(size_fixed, sizes, size, i);

        SET_TYPE(type_fixed, types, type, i);

        if (H5FDread(lf, type, H5P_DEFAULT, addrs[i], size, read_bufs[i]) < 0) {

            if (verbose) {

                fprintf(stdout, "%s: H5FDread() failed on entry %d.\n", __func__, i);
            }
            result = false;
            break;
        }
    }

    return (result);

} /* end test_vector_io__read_v_indiv() */

/*-------------------------------------------------------------------------
 * Function:    test_vector_io__write_v_indiv
 *
 * Purpose:     Write the supplied vector as a sequence of individual
 *              writes.
 *
 *              All arrays parameters are presumed to be of length
 *              count.
 *
 * Return:      Return true if successful, and false if any errors
 *              are encountered.
 *
 *-------------------------------------------------------------------------
 */

static bool
test_vector_io__write_v_indiv(H5FD_t *lf, uint32_t count, H5FD_mem_t types[], haddr_t addrs[], size_t sizes[],
                              const void *write_bufs[])
{
    bool       size_fixed = false;
    bool       type_fixed = false;
    bool       result     = true; /* will set to false on failure */
    bool       verbose    = false;
    uint32_t   i;
    size_t     size = SIZE_MAX;
    H5FD_mem_t type = H5FD_MEM_NTYPES;

    for (i = 0; i < count; i++) {

        SET_SIZE(size_fixed, sizes, size, i);

        SET_TYPE(type_fixed, types, type, i);

        if (H5FDwrite(lf, type, H5P_DEFAULT, addrs[i], size, write_bufs[i]) < 0) {

            if (verbose) {

                fprintf(stdout, "%s: HDwrite() failed on entry %d.\n", __func__, i);
            }
            result = false;
            break;
        }
    }

    return (result);

} /* end test_vector_io__write_v_indiv() */

/*-------------------------------------------------------------------------
 *
 * Function:    test_vector_io__verify_v
 *
 * Purpose:     Verify that the read and write buffers of the supplied
 *              vectors are identical.
 *
 * Return:      true if the read and write vectors are identical, and
 *              false otherwise.
 *
 *-------------------------------------------------------------------------
 */

static bool
test_vector_io__verify_v(uint32_t count, H5FD_mem_t types[], size_t sizes[], const void *write_bufs[],
                         void *read_bufs[], const char *name)
{
    bool        size_fixed = false;
    bool        type_fixed = false;
    bool        identical  = true;
    bool        verbose    = true;
    uint32_t    i;
    size_t      j;
    const char *w_buf;
    char       *r_buf;
    const char *mem_type_names[7] = {"H5FD_MEM_DEFAULT", "H5FD_MEM_SUPER", "H5FD_MEM_BTREE", "H5FD_MEM_DRAW",
                                     "H5FD_MEM_GHEAP",   "H5FD_MEM_LHEAP", "H5FD_MEM_OHDR"};
    size_t      size              = SIZE_MAX;
    H5FD_mem_t  type              = H5FD_MEM_NTYPES;

    i = 0;

    while ((i < count) && (identical)) {

        SET_SIZE(size_fixed, sizes, size, i);

        SET_TYPE(type_fixed, types, type, i);

        w_buf = (const char *)(write_bufs[i]);
        r_buf = (char *)(read_bufs[i]);

        j = 0;
        while ((j < size) && (identical)) {

            if (w_buf[j] != r_buf[j]) {

                identical = false;

                if (verbose) {

                    fprintf(stdout, "\n\nread/write buf mismatch in vector/entry");
                    fprintf(stdout, "\"%s\"/%u at offset %llu/%llu w/r = %c/%c type = %s\n\n", name,
                            (unsigned)i, (long long unsigned)j, (long long unsigned)size, w_buf[j], r_buf[j],
                            mem_type_names[type]);
                }
            }
            j++;
        }
        i++;
    }

    return (identical);

} /* end test_vector_io__verify_v() */

/*-------------------------------------------------------------------------
 *
 * Function:    test_vector_io__dump_test_vectors
 *
 * Purpose:     Print a set of test vectors to stdout.
 *              Vectors are assumed to be of length count, and
 *              buffers must be either NULL, or null terminate strings
 *              of char.
 *
 * Return:      void.
 *
 *-------------------------------------------------------------------------
 */

static void
test_vector_io__dump_test_vectors(uint32_t count, H5FD_mem_t types[], haddr_t addrs[], size_t sizes[],
                                  const void *write_bufs[], void *read_bufs[], const char *name)
{
    bool        size_fixed = false;
    bool        type_fixed = false;
    uint32_t    i;
    const char *mem_type_names[7] = {"H5FD_MEM_DEFAULT", "H5FD_MEM_SUPER", "H5FD_MEM_BTREE", "H5FD_MEM_DRAW",
                                     "H5FD_MEM_GHEAP",   "H5FD_MEM_LHEAP", "H5FD_MEM_OHDR"};
    size_t      size              = SIZE_MAX;
    H5FD_mem_t  type              = H5FD_MEM_NTYPES;

    const char *w_buf;
    char       *r_buf;

    fprintf(stdout, "\n\nDumping test vector \"%s\" of length %d\n\n", name, count);

    for (i = 0; i < count; i++) {

        SET_SIZE(size_fixed, sizes, size, i);

        SET_TYPE(type_fixed, types, type, i);

        assert((H5FD_MEM_DEFAULT <= type) && (type <= H5FD_MEM_OHDR));

        w_buf = (const char *)(write_bufs[i]);

        if (read_bufs) {

            r_buf = (char *)(read_bufs[i]);
        }
        else {

            r_buf = NULL;
        }

        fprintf(stdout, "%u: addr/len = %llu/%llu, type = %s, w_buf = \"%s\"\n", (unsigned)i,
                (long long unsigned)(addrs[i]), (long long unsigned)(size), mem_type_names[type], w_buf);

        if (r_buf) {

            fprintf(stdout, " r_buf = \"%s\"\n", r_buf);
        }
    }

    return;

} /* end test_vector_io__dump_test_vectors() */

/*-------------------------------------------------------------------------
 * Function:    test_vector_io
 *
 * Purpose:     Test I/O using the vector I/O VFD public VFD calls.
 *
 *              Test proceeds as follows:
 *
 *              1) read / write vectors and verify results
 *
 *              2) write individual / read vector and verify results
 *
 *              3) write vector / read individual and verify results
 *
 *              4) Close and then re-open the file, verify data written
 *                 above.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
#define VECTOR_LEN 16

static herr_t
test_vector_io(const char *vfd_name)
{
    char        test_title[80];
    bool        size_fixed_0 = false; /* whether remaining entry      */
    bool        size_fixed_1 = false; /* sizes in vector are fixed.   */
    bool        size_fixed_2 = false; /*                              */
    bool        type_fixed_0 = false; /* whether remaining entry      */
    bool        type_fixed_1 = false; /* types in vector are fixed.   */
    bool        type_fixed_2 = false; /*                              */
    bool        verbose      = false;
    hid_t       fapl_id      = H5I_INVALID_HID; /* file access property list ID */
    haddr_t     eoa;                            /* file eoa                     */
    char        filename[1024];                 /* filename                     */
    char       *buf;                            /* tmp ptr to buf               */
    unsigned    flags = 0;                      /* file open flags              */
    H5FD_t     *lf    = NULL;                   /* VFD struct ptr               */
    uint32_t    i;                              /* index                        */
    uint32_t    j;                              /* index                        */
    uint32_t    count = VECTOR_LEN;             /* length of vectors            */
    H5FD_mem_t  types_0[VECTOR_LEN];            /* types vector                 */
    H5FD_mem_t  types_1[VECTOR_LEN];            /* types vector                 */
    H5FD_mem_t  types_2[VECTOR_LEN];            /* types vector                 */
    H5FD_mem_t  f_types_0[VECTOR_LEN];          /* fixed types vector           */
    H5FD_mem_t  f_types_1[VECTOR_LEN];          /* fixed types vector           */
    H5FD_mem_t  f_types_2[VECTOR_LEN];          /* fixed types vector           */
    H5FD_mem_t  f_type_0 = H5FD_MEM_NTYPES;     /* current type for f vector 0  */
    H5FD_mem_t  f_type_1 = H5FD_MEM_NTYPES;     /* current type for f vector 1  */
    H5FD_mem_t  f_type_2 = H5FD_MEM_NTYPES;     /* current type for f vector 2  */
    haddr_t     addrs_0[VECTOR_LEN];            /* addresses vector             */
    haddr_t     addrs_1[VECTOR_LEN];            /* addresses vector             */
    haddr_t     addrs_2[VECTOR_LEN];            /* addresses vector             */
    haddr_t     f_addrs_0[VECTOR_LEN];          /* fixed addresses vector       */
    haddr_t     f_addrs_1[VECTOR_LEN];          /* fixed addresses vector       */
    haddr_t     f_addrs_2[VECTOR_LEN];          /* fixed addresses vector       */
    size_t      sizes_0[VECTOR_LEN];            /* sizes vector                 */
    size_t      sizes_1[VECTOR_LEN];            /* sizes vector                 */
    size_t      sizes_2[VECTOR_LEN];            /* sizes vector                 */
    size_t      f_sizes_0[VECTOR_LEN];          /* fixed sizes vector           */
    size_t      f_sizes_1[VECTOR_LEN];          /* fixed sizes vector           */
    size_t      f_sizes_2[VECTOR_LEN];          /* fixed sizes vector           */
    size_t      f_size_0 = 0;                   /* current size for f vector 0  */
    size_t      f_size_1 = 0;                   /* current size for f vector 1  */
    size_t      f_size_2 = 0;                   /* current size for f vector 2  */
    const void *write_bufs_0[VECTOR_LEN];       /* write bufs vector            */
    const void *write_bufs_1[VECTOR_LEN];       /* write bufs vector            */
    const void *write_bufs_2[VECTOR_LEN];       /* write bufs vector            */
    const void *f_write_bufs_0[VECTOR_LEN];     /* fixed write bufs vector      */
    const void *f_write_bufs_1[VECTOR_LEN];     /* fixed write bufs vector      */
    const void *f_write_bufs_2[VECTOR_LEN];     /* fixed write bufs vector      */
    void       *read_bufs_0[VECTOR_LEN];        /* read bufs vector             */
    void       *read_bufs_1[VECTOR_LEN];        /* read bufs vector             */
    void       *read_bufs_2[VECTOR_LEN];        /* read bufs vector             */
    void       *f_read_bufs_0[VECTOR_LEN];      /* fixed read bufs vector       */
    void       *f_read_bufs_1[VECTOR_LEN];      /* fixed read bufs vector       */
    void       *f_read_bufs_2[VECTOR_LEN];      /* fixed read bufs vector       */

    HDsnprintf(test_title, sizeof(test_title), "vector I/O with %s VFD", vfd_name);

    TESTING(test_title);

    /* Set property list and file name for target driver */

    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;

    if (HDstrcmp(vfd_name, "sec2") == 0) {

        if (H5Pset_fapl_sec2(fapl_id) < 0)
            TEST_ERROR;

        h5_fixname(FILENAME[0], fapl_id, filename, sizeof(filename));
    }
    else if (HDstrcmp(vfd_name, "stdio") == 0) {

        if (H5Pset_fapl_stdio(fapl_id) < 0)
            TEST_ERROR;

        h5_fixname(FILENAME[7], fapl_id, filename, sizeof filename);
    }
    else {

        fprintf(stdout, "un-supported VFD\n");
        TEST_ERROR;
    }

    /* setup the test vectors -- note that addresses are not set until
     * we allocate space via the file driver.
     */
    if (!(test_vector_io__setup_v(count, types_0, addrs_0, sizes_0, write_bufs_0, read_bufs_0, 'a') &&
          test_vector_io__setup_v(count, types_1, addrs_1, sizes_1, write_bufs_1, read_bufs_1, 'e') &&
          test_vector_io__setup_v(count, types_2, addrs_2, sizes_2, write_bufs_2, read_bufs_2, 'A')))
        TEST_ERROR;

    if (!(test_vector_io__setup_fixed_size_v(count, f_types_0, f_addrs_0, f_sizes_0, f_write_bufs_0,
                                             f_read_bufs_0, 'b') &&
          test_vector_io__setup_fixed_size_v(count, f_types_1, f_addrs_1, f_sizes_1, f_write_bufs_1,
                                             f_read_bufs_1, 'f') &&
          test_vector_io__setup_fixed_size_v(count, f_types_2, f_addrs_2, f_sizes_2, f_write_bufs_2,
                                             f_read_bufs_2, 'B')))
        TEST_ERROR;

    flags = H5F_ACC_RDWR | H5F_ACC_CREAT | H5F_ACC_TRUNC;

    if (NULL == (lf = H5FDopen(filename, flags, fapl_id, HADDR_UNDEF)))
        TEST_ERROR;

    /* allocate space for the data in the test vectors */
    for (i = 0; i < count; i++) {

        addrs_0[i] = H5FDalloc(lf, types_0[i], H5P_DEFAULT, (hsize_t)(sizes_0[i]));
        addrs_1[i] = H5FDalloc(lf, types_1[i], H5P_DEFAULT, (hsize_t)(sizes_1[i]));
        addrs_2[i] = H5FDalloc(lf, types_2[i], H5P_DEFAULT, (hsize_t)(sizes_2[i]));

        if ((addrs_0[i] == HADDR_UNDEF) || (addrs_1[i] == HADDR_UNDEF) || (addrs_2[i] == HADDR_UNDEF))
            TEST_ERROR;

        SET_SIZE(size_fixed_0, f_sizes_0, f_size_0, i);
        SET_SIZE(size_fixed_1, f_sizes_1, f_size_1, i);
        SET_SIZE(size_fixed_2, f_sizes_2, f_size_2, i);

        SET_TYPE(type_fixed_0, f_types_0, f_type_0, i);
        SET_TYPE(type_fixed_1, f_types_1, f_type_1, i);
        SET_TYPE(type_fixed_2, f_types_2, f_type_2, i);

        f_addrs_0[i] = H5FDalloc(lf, f_type_0, H5P_DEFAULT, (hsize_t)(f_size_0));
        f_addrs_1[i] = H5FDalloc(lf, f_type_1, H5P_DEFAULT, (hsize_t)(f_size_1));
        f_addrs_2[i] = H5FDalloc(lf, f_type_2, H5P_DEFAULT, (hsize_t)(f_size_2));

        if ((f_addrs_0[i] == HADDR_UNDEF) || (f_addrs_1[i] == HADDR_UNDEF) || (f_addrs_2[i] == HADDR_UNDEF))
            TEST_ERROR;
    }

    if (verbose) {

        test_vector_io__dump_test_vectors(count, types_0, addrs_0, sizes_0, write_bufs_0, NULL, "zero");

        test_vector_io__dump_test_vectors(count, types_1, addrs_1, sizes_1, write_bufs_1, NULL, "one");

        test_vector_io__dump_test_vectors(count, types_2, addrs_2, sizes_2, write_bufs_2, NULL, "two");

        test_vector_io__dump_test_vectors(count, f_types_0, f_addrs_0, f_sizes_0, f_write_bufs_0, NULL,
                                          "fixed zero");

        test_vector_io__dump_test_vectors(count, f_types_1, f_addrs_1, f_sizes_1, f_write_bufs_1, NULL,
                                          "fixed one");

        test_vector_io__dump_test_vectors(count, f_types_2, f_addrs_2, f_sizes_2, f_write_bufs_2, NULL,
                                          "fixed two");
    }

    /* write and then read using vector I/O.  First, read/write vector
     * of length 1, then of length 2, then remainder of vector
     */
    if (H5FDwrite_vector(lf, H5P_DEFAULT, 1, &(types_0[0]), &(addrs_0[0]), &(sizes_0[0]),
                         &(write_bufs_0[0])) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, 1, &(types_0[0]), &(addrs_0[0]), &(sizes_0[0]), &(read_bufs_0[0])) <
        0)
        TEST_ERROR;

    if (H5FDwrite_vector(lf, H5P_DEFAULT, 2, &(types_0[1]), &(addrs_0[1]), &(sizes_0[1]),
                         &(write_bufs_0[1])) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, 2, &(types_0[1]), &(addrs_0[1]), &(sizes_0[1]), &(read_bufs_0[1])) <
        0)
        TEST_ERROR;

    if (H5FDwrite_vector(lf, H5P_DEFAULT, count - 3, &(types_0[3]), &(addrs_0[3]), &(sizes_0[3]),
                         &(write_bufs_0[3])) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count - 3, &(types_0[3]), &(addrs_0[3]), &(sizes_0[3]),
                        &(read_bufs_0[3])) < 0)
        TEST_ERROR;

    /* for fixed size / type vector, just write and read as single operations */
    if (H5FDwrite_vector(lf, H5P_DEFAULT, count, f_types_0, f_addrs_0, f_sizes_0, f_write_bufs_0) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count, f_types_0, f_addrs_0, f_sizes_0, f_read_bufs_0) < 0)
        TEST_ERROR;

    /* verify that the expected data is read */
    if (!test_vector_io__verify_v(count, types_0, sizes_0, write_bufs_0, read_bufs_0, "zero"))
        TEST_ERROR;

    if (!test_vector_io__verify_v(count, f_types_0, f_sizes_0, f_write_bufs_0, f_read_bufs_0, "fixed zero"))
        TEST_ERROR;

    /* write the contents of a vector individually, and then read it back
     * in several vector reads.
     */
    if (!test_vector_io__write_v_indiv(lf, count, types_1, addrs_1, sizes_1, write_bufs_1))
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, 1, &(types_1[0]), &(addrs_1[0]), &(sizes_1[0]), &(read_bufs_1[0])) <
        0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, 2, &(types_1[1]), &(addrs_1[1]), &(sizes_1[1]), &(read_bufs_1[1])) <
        0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count - 3, &(types_1[3]), &(addrs_1[3]), &(sizes_1[3]),
                        &(read_bufs_1[3])) < 0)
        TEST_ERROR;

    /* for fixed size, write individually, and the read back in a single call */
    if (!test_vector_io__write_v_indiv(lf, count, f_types_1, f_addrs_1, f_sizes_1, f_write_bufs_1))
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count, f_types_1, f_addrs_1, f_sizes_1, f_read_bufs_1) < 0)
        TEST_ERROR;

    /* verify that the expected data is read */
    if (!test_vector_io__verify_v(count, types_1, sizes_1, write_bufs_1, read_bufs_1, "one"))
        TEST_ERROR;

    if (!test_vector_io__verify_v(count, f_types_1, f_sizes_1, f_write_bufs_1, f_read_bufs_1, "fixed one"))
        TEST_ERROR;

    /* Write the contents of a vector as several vector writes, then
     * read it back in individual reads.
     */
    if (H5FDwrite_vector(lf, H5P_DEFAULT, 1, &(types_2[0]), &(addrs_2[0]), &(sizes_2[0]),
                         &(write_bufs_2[0])) < 0)
        TEST_ERROR;

    if (H5FDwrite_vector(lf, H5P_DEFAULT, 2, &(types_2[1]), &(addrs_2[1]), &(sizes_2[1]),
                         &(write_bufs_2[1])) < 0)
        TEST_ERROR;

    if (H5FDwrite_vector(lf, H5P_DEFAULT, count - 3, &(types_2[3]), &(addrs_2[3]), &(sizes_2[3]),
                         &(write_bufs_2[3])) < 0)
        TEST_ERROR;

    if (!test_vector_io__read_v_indiv(lf, count, types_2, addrs_2, sizes_2, read_bufs_2))
        TEST_ERROR;

    /* for fixed size, write as a single vector, read back individually */
    if (H5FDwrite_vector(lf, H5P_DEFAULT, count, f_types_2, f_addrs_2, f_sizes_2, f_write_bufs_2) < 0)
        TEST_ERROR;

    if (!test_vector_io__read_v_indiv(lf, count, f_types_2, f_addrs_2, f_sizes_2, f_read_bufs_2))
        TEST_ERROR;

    /* verify that the expected data is read */
    if (!test_vector_io__verify_v(count, types_2, sizes_2, write_bufs_2, read_bufs_2, "two"))
        TEST_ERROR;

    if (!test_vector_io__verify_v(count, f_types_2, f_sizes_2, f_write_bufs_2, f_read_bufs_2, "fixed two"))
        TEST_ERROR;

    /* make note of eoa -- needed after we re-open the file */
    if (HADDR_UNDEF == (eoa = H5FDget_eoa(lf, H5FD_MEM_DEFAULT)))
        TEST_ERROR;

    /* close the file and then re-open it */
    if (H5FDclose(lf) < 0)
        TEST_ERROR;

    flags = H5F_ACC_RDWR;

    if (NULL == (lf = H5FDopen(filename, flags, fapl_id, HADDR_UNDEF)))
        TEST_ERROR;

    /* The EOA is set to 0 on open.  To avoid errors, we must set it
     * to its correct value before we do any reads.
     *
     * Note:  In the context of using the VFD layer without the HDF5
     *        library on top, this doesn't make much sense.  Consider
     *        adding an open flag that sets the EOA to the current file
     *        size.
     */
    if (H5FDset_eoa(lf, H5FD_MEM_DEFAULT, eoa) < 0)
        TEST_ERROR;

    /* Null the read vectors */

    size_fixed_0 = false;
    size_fixed_1 = false;
    size_fixed_2 = false;

    for (i = 0; i < count; i++) {

        buf = read_bufs_0[i];
        for (j = 0; j < sizes_0[i]; j++) {
            buf[j] = '\0';
        }

        buf = read_bufs_1[i];
        for (j = 0; j < sizes_1[i]; j++) {
            buf[j] = '\0';
        }

        buf = read_bufs_2[i];
        for (j = 0; j < sizes_2[i]; j++) {
            buf[j] = '\0';
        }

        SET_SIZE(size_fixed_0, f_sizes_0, f_size_0, i);
        SET_SIZE(size_fixed_1, f_sizes_1, f_size_1, i);
        SET_SIZE(size_fixed_2, f_sizes_2, f_size_2, i);

        buf = f_read_bufs_0[i];
        for (j = 0; j < f_size_0; j++) {
            buf[j] = '\0';
        }

        buf = f_read_bufs_1[i];
        for (j = 0; j < f_size_1; j++) {
            buf[j] = '\0';
        }

        buf = f_read_bufs_2[i];
        for (j = 0; j < f_size_2; j++) {
            buf[j] = '\0';
        }
    }

    /* read the contents of the file */
    if (H5FDread_vector(lf, H5P_DEFAULT, count, types_0, addrs_0, sizes_0, read_bufs_0) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count, types_1, addrs_1, sizes_1, read_bufs_1) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count, types_2, addrs_2, sizes_2, read_bufs_2) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count, f_types_0, f_addrs_0, f_sizes_0, f_read_bufs_0) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count, f_types_1, f_addrs_1, f_sizes_1, f_read_bufs_1) < 0)
        TEST_ERROR;

    if (H5FDread_vector(lf, H5P_DEFAULT, count, f_types_2, f_addrs_2, f_sizes_2, f_read_bufs_2) < 0)
        TEST_ERROR;

    /* verify the contents. */
    if (!test_vector_io__verify_v(count, types_0, sizes_0, write_bufs_0, read_bufs_0, "zero-"))
        TEST_ERROR;

    if (!test_vector_io__verify_v(count, types_1, sizes_1, write_bufs_1, read_bufs_1, "one-"))
        TEST_ERROR;

    if (!test_vector_io__verify_v(count, types_2, sizes_2, write_bufs_2, read_bufs_2, "two-"))
        TEST_ERROR;

    if (!test_vector_io__verify_v(count, f_types_0, f_sizes_0, f_write_bufs_0, f_read_bufs_0, "fixed zero-"))
        TEST_ERROR;

    if (!test_vector_io__verify_v(count, f_types_1, f_sizes_1, f_write_bufs_1, f_read_bufs_1, "fixed one-"))
        TEST_ERROR;

    if (!test_vector_io__verify_v(count, f_types_2, f_sizes_2, f_write_bufs_2, f_read_bufs_2, "fixed two-"))
        TEST_ERROR;

    if (H5FDclose(lf) < 0)
        TEST_ERROR;

    h5_delete_test_file(FILENAME[0], fapl_id);

    /* Close the fapl */
    if (H5Pclose(fapl_id) < 0)
        TEST_ERROR;

    /* discard the read and write buffers */

    for (i = 0; i < count; i++) {

        h5_free_const(write_bufs_0[i]);
        write_bufs_0[i] = NULL;

        h5_free_const(write_bufs_1[i]);
        write_bufs_1[i] = NULL;

        h5_free_const(write_bufs_2[i]);
        write_bufs_2[i] = NULL;

        free(read_bufs_0[i]);
        read_bufs_0[i] = NULL;

        free(read_bufs_1[i]);
        read_bufs_1[i] = NULL;

        free(read_bufs_2[i]);
        read_bufs_2[i] = NULL;

        h5_free_const(f_write_bufs_0[i]);
        f_write_bufs_0[i] = NULL;

        h5_free_const(f_write_bufs_1[i]);
        f_write_bufs_1[i] = NULL;

        h5_free_const(f_write_bufs_2[i]);
        f_write_bufs_2[i] = NULL;

        free(f_read_bufs_0[i]);
        f_read_bufs_0[i] = NULL;

        free(f_read_bufs_1[i]);
        f_read_bufs_1[i] = NULL;

        free(f_read_bufs_2[i]);
        f_read_bufs_2[i] = NULL;
    }

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(fapl_id);
        H5FDclose(lf);
    }
    H5E_END_TRY
    return -1;
} /* end test_vector_io() */

/*-------------------------------------------------------------------------
 * Function:    test_selection_io_write
 *
 * Purpose:     Updates write buffers to ensure a unique value is written
 *              to each element and issues a selection write call.
 *
 * Return:      Success:        true
 *              Failure:        false
 *-------------------------------------------------------------------------
 */
/* Array dimensions, used for all selection I/O tests.  Currently both must be
 * even.  1-Dimensional arrays have a size of SEL_IO_DIM0 * SEL_IO_DIM1. */
#define SEL_IO_DIM0 8
#define SEL_IO_DIM1 10

static herr_t
test_selection_io_write(H5FD_t *lf, H5FD_mem_t type, uint32_t count, hid_t mem_spaces[], hid_t file_spaces[],
                        haddr_t offsets[], size_t element_sizes[], int *wbufs[])
{
    const void **bufs; /* Avoids cast/const warnings */
    int          i;
    int          j;

    if (NULL == (bufs = calloc(count, sizeof(void *))))
        TEST_ERROR;

    /* Update write buffer */
    for (i = 0; i < (int)count; i++) {
        if (wbufs[i] && (i == 0 || wbufs[i] != wbufs[i - 1]))
            for (j = 0; j < SEL_IO_DIM0 * SEL_IO_DIM1; j++)
                wbufs[i][j] += 2 * SEL_IO_DIM0 * SEL_IO_DIM1;
        bufs[i] = wbufs[i];
    }

    /* Issue write call */
    if (H5FDwrite_selection(lf, type, H5P_DEFAULT, count, mem_spaces, file_spaces, offsets, element_sizes,
                            bufs) < 0)
        TEST_ERROR;

    free(bufs);

    return 0;

error:
    free(bufs);
    return -1;
} /* end test_selection_io_write() */

/*-------------------------------------------------------------------------
 * Function:    test_selection_io_read_verify
 *
 * Purpose:     Issues a selection read call and compares the result to
 *              the arrays provided in erbufs.  If rbufcount is less than
 *              count the last element in erbufs will be repeated to make
 *              up the difference.
 *
 * Return:      Success:        true
 *              Failure:        false
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_selection_io_read_verify(H5FD_t *lf, H5FD_mem_t type, uint32_t count, hid_t mem_spaces[],
                              hid_t file_spaces[], haddr_t offsets[], size_t element_sizes[],
                              uint32_t rbufcount, int *erbufs[], bool shorten_rbufs)
{
    int  rbuf1[SEL_IO_DIM0 * SEL_IO_DIM1];
    int  rbuf2[SEL_IO_DIM0 * SEL_IO_DIM1];
    int *rbufs[2] = {rbuf1, rbuf2};
    int  i;
    int  j;

    /* Initialize read buffer */
    for (i = 0; i < (int)rbufcount; i++)
        for (j = 0; j < SEL_IO_DIM0 * SEL_IO_DIM1; j++)
            rbufs[i][j] = -1;

    /* Handle elements in count that are not part of rbufcount */
    for (i = (int)rbufcount; i < (int)count; i++)
        if (shorten_rbufs)
            rbufs[i] = NULL;
        else
            rbufs[i] = rbufs[rbufcount - 1];

    /* Issue read call */
    if (H5FDread_selection(lf, type, H5P_DEFAULT, count, mem_spaces, file_spaces, offsets, element_sizes,
                           (void **)rbufs) < 0)
        TEST_ERROR;

    /* Verify result */
    for (i = 0; i < (int)rbufcount; i++)
        for (j = 0; j < SEL_IO_DIM0 * SEL_IO_DIM1; j++)
            if (rbufs[i][j] != erbufs[i][j]) {
                H5_FAILED();
                AT();
                printf("data read from file does not match expected values at mapping array location %d\n",
                       i);
                printf("expected data: \n");
                for (j = 0; j < SEL_IO_DIM0 * SEL_IO_DIM1; j++) {
                    printf("%6d", erbufs[i][j]);
                    if (!((j + 1) % SEL_IO_DIM1))
                        printf("\n");
                }
                printf("read data: \n");
                for (j = 0; j < SEL_IO_DIM0 * SEL_IO_DIM1; j++) {
                    printf("%6d", rbufs[i][j]);
                    if (!((j + 1) % SEL_IO_DIM1))
                        printf("\n");
                }
                goto error;
            }

    return 0;

error:
    return -1;
} /* end test_selection_io_read_verify() */

/*-------------------------------------------------------------------------
 * Function:    test_selection_io
 *
 * Purpose:     Test I/O using the selection I/O VFD public VFD calls.
 *
 *              Tests various combinations of 1D, 2D, contiguous, and
 *              strided selections with different file data types and
 *              with and without shortened arrays.
 *
 * Return:      Success:        0
 *              Failure:        -1
 *
 *-------------------------------------------------------------------------
 */
static herr_t
test_selection_io(const char *vfd_name)
{
    char       test_title[80];
    hid_t      fapl_id = H5I_INVALID_HID;                           /* file access property list ID */
    char       filename[1024];                                      /* filename                     */
    unsigned   flags = 0;                                           /* file open flags              */
    H5FD_t    *lf    = NULL;                                        /* VFD struct ptr               */
    int        i;                                                   /* index                        */
    int        j;                                                   /* index                        */
    int        i2;                                                  /* index                        */
    int        j2;                                                  /* index                        */
    hid_t      mem_spaces[2]  = {H5I_INVALID_HID, H5I_INVALID_HID}; /* memory dataspaces vector */
    hid_t      file_spaces[2] = {H5I_INVALID_HID, H5I_INVALID_HID}; /* file dataspaces vector */
    hsize_t    dims1[1]       = {SEL_IO_DIM0 * SEL_IO_DIM1};        /* 1D dataspace dimensions */
    hsize_t    dims2[2]       = {SEL_IO_DIM0, SEL_IO_DIM1};         /* 1D dataspace dimensions */
    hsize_t    start[2];                                            /* start for hyperslab          */
    hsize_t    stride[2];                                           /* stride for hyperslab         */
    hsize_t    count[2];                                            /* count for hyperslab          */
    hsize_t    block[2];                                            /* block for hyperslab          */
    H5FD_mem_t type;                                                /* file data type               */
    haddr_t    addrs[2];                                            /* addresses vector             */
    size_t     element_sizes[2] = {sizeof(int), sizeof(int)};       /* element sizes vector */
    int        wbuf1[SEL_IO_DIM0 * SEL_IO_DIM1];                    /* 1D write buffer        */
    int        wbuf2[SEL_IO_DIM0][SEL_IO_DIM1];                     /* 2D write buffer         */
    int       *wbufs[2] = {wbuf1, wbuf2[0]};                        /* Array of write buffers    */
    int        fbuf1[SEL_IO_DIM0 * SEL_IO_DIM1];                    /* 1D file buffer         */
    int        fbuf2[SEL_IO_DIM0][SEL_IO_DIM1];                     /* 2D file buffer          */
    int       *fbufs[2] = {fbuf1, fbuf2[0]};                        /* Array of file buffers     */
    int        erbuf1[SEL_IO_DIM0 * SEL_IO_DIM1];                   /* 1D expected read buffer */
    int        erbuf2[SEL_IO_DIM0][SEL_IO_DIM1];                    /* 2D expected read buffer */
    int       *erbufs[2] = {erbuf1, erbuf2[0]};                     /* Array of expected read buffers */
    int        shorten_element_sizes; /* Whether to shorten the element sizes array */

    HDsnprintf(test_title, sizeof(test_title), "selection I/O with %s VFD", vfd_name);

    TESTING(test_title);

    /* Set property list and file name for target driver */

    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        TEST_ERROR;

    if (HDstrcmp(vfd_name, "sec2") == 0) {

        if (H5Pset_fapl_sec2(fapl_id) < 0)
            TEST_ERROR;

        h5_fixname(FILENAME[0], fapl_id, filename, sizeof(filename));
    }
    else if (HDstrcmp(vfd_name, "stdio") == 0) {

        if (H5Pset_fapl_stdio(fapl_id) < 0)
            TEST_ERROR;

        h5_fixname(FILENAME[7], fapl_id, filename, sizeof filename);
    }
    else {

        fprintf(stdout, "un-supported VFD\n");
        TEST_ERROR;
    }

    /* Initialize write buffers */
    for (i = 0; i < SEL_IO_DIM0; i++)
        for (j = 0; j < SEL_IO_DIM1; j++) {
            wbuf1[(i * SEL_IO_DIM1) + j] = (i * SEL_IO_DIM1) + j;
            wbuf2[i][j]                  = (i * SEL_IO_DIM1) + j + (SEL_IO_DIM0 * SEL_IO_DIM1);
        }

    /* Create dataspaces - location 0 will be 1D and location 1 will be 2D */
    if ((mem_spaces[0] = H5Screate_simple(1, dims1, NULL)) < 0)
        TEST_ERROR;
    if ((mem_spaces[1] = H5Screate_simple(2, dims2, NULL)) < 0)
        TEST_ERROR;
    if ((file_spaces[0] = H5Screate_simple(1, dims1, NULL)) < 0)
        TEST_ERROR;
    if ((file_spaces[1] = H5Screate_simple(2, dims2, NULL)) < 0)
        TEST_ERROR;

    /* Create file */
    flags = H5F_ACC_RDWR | H5F_ACC_CREAT | H5F_ACC_TRUNC;

    if (NULL == (lf = H5FDopen(filename, flags, fapl_id, HADDR_UNDEF)))
        TEST_ERROR;

    /* Loop over memory types */
    for (type = 1; type < H5FD_MEM_NTYPES; type++) {
        /* Allocate space for I/O */
        addrs[0] = H5FDalloc(lf, type, H5P_DEFAULT, (hsize_t)(sizeof(int) * SEL_IO_DIM0 * SEL_IO_DIM1));
        addrs[1] = H5FDalloc(lf, type, H5P_DEFAULT, (hsize_t)(sizeof(int) * SEL_IO_DIM0 * SEL_IO_DIM1));

        /*
         * Test 1: Simple 1D contiguous I/O
         */
        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0], element_sizes,
                                    (int **)&wbufs[0]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0; i < SEL_IO_DIM0 * SEL_IO_DIM1; i++)
            fbuf1[i] = wbuf1[i];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&fbufs[0], false) < 0)
            TEST_ERROR;

        /*
         * Test 2: Simple 2D contiguous I/O
         */
        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1], element_sizes,
                                    (int **)&wbufs[1]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0; i < SEL_IO_DIM0; i++)
            for (j = 0; j < SEL_IO_DIM1; j++)
                fbuf2[i][j] = wbuf2[i][j];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&fbufs[1], false) < 0)
            TEST_ERROR;

        /*
         * Test 3: Strided <> Contiguous 1D I/O
         */
        /* SEL_IO_DIM1 must be even */
        assert(SEL_IO_DIM1 / 2 == (SEL_IO_DIM1 + 1) / 2);

        /* Strided selection in memory */
        start[0]  = 1;
        stride[0] = 2;
        count[0]  = (SEL_IO_DIM0 * SEL_IO_DIM1) / 2;
        block[0]  = 1;
        if (H5Sselect_hyperslab(mem_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Contiguous selection in file */
        if (H5Sselect_hyperslab(file_spaces[0], H5S_SELECT_SET, start, NULL, count, NULL) < 0)
            TEST_ERROR;

        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0], element_sizes,
                                    (int **)&wbufs[0]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1) / 2; i++)
            fbuf1[i + 1] = wbuf1[(2 * i) + 1];

        /* Update expected read buf */
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1); i++)
            erbuf1[i] = -1;
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1) / 2; i++)
            erbuf1[(2 * i) + 1] = wbuf1[(2 * i) + 1];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&erbufs[0], false) < 0)
            TEST_ERROR;

        /* Reset selections */
        if (H5Sselect_all(mem_spaces[0]) < 0)
            TEST_ERROR;
        if (H5Sselect_all(file_spaces[0]) < 0)
            TEST_ERROR;

        /* Read entire file buffer and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&fbufs[0], false) < 0)
            TEST_ERROR;

        /*
         * Test 4: Contiguous <> Strided 1D I/O
         */
        /* SEL_IO_DIM1 must be even */
        assert(SEL_IO_DIM1 / 2 == (SEL_IO_DIM1 + 1) / 2);

        /* Contiguous selection in memory */
        start[0]  = 1;
        stride[0] = 2;
        if (H5Sselect_hyperslab(mem_spaces[0], H5S_SELECT_SET, start, NULL, count, NULL) < 0)
            TEST_ERROR;

        /* Strided selection in file */
        count[0] = (SEL_IO_DIM0 * SEL_IO_DIM1) / 2;
        block[0] = 1;
        if (H5Sselect_hyperslab(file_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0], element_sizes,
                                    (int **)&wbufs[0]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1) / 2; i++)
            fbuf1[(2 * i) + 1] = wbuf1[i + 1];

        /* Update expected read buf */
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1); i++)
            erbuf1[i] = -1;
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1) / 2; i++)
            erbuf1[i + 1] = wbuf1[i + 1];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&erbufs[0], false) < 0)
            TEST_ERROR;

        /* Reset selections */
        if (H5Sselect_all(mem_spaces[0]) < 0)
            TEST_ERROR;
        if (H5Sselect_all(file_spaces[0]) < 0)
            TEST_ERROR;

        /* Read entire file buffer and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&fbufs[0], false) < 0)
            TEST_ERROR;

        /*
         * Test 5: Strided <> Strided 1D I/O
         */
        /* SEL_IO_DIM1 must be even */
        assert(SEL_IO_DIM1 / 2 == (SEL_IO_DIM1 + 1) / 2);

        /* Strided selection in memory */
        start[0]  = 1;
        stride[0] = 2;
        count[0]  = (SEL_IO_DIM0 * SEL_IO_DIM1) / 2;
        block[0]  = 1;
        if (H5Sselect_hyperslab(mem_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Strided selection in file */
        start[0] = 0;
        if (H5Sselect_hyperslab(file_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0], element_sizes,
                                    (int **)&wbufs[0]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1) / 2; i++)
            fbuf1[2 * i] = wbuf1[(2 * i) + 1];

        /* Update expected read buf */
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1); i++)
            erbuf1[i] = -1;
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1) / 2; i++)
            erbuf1[(2 * i) + 1] = wbuf1[(2 * i) + 1];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&erbufs[0], false) < 0)
            TEST_ERROR;

        /* Reset selections */
        if (H5Sselect_all(mem_spaces[0]) < 0)
            TEST_ERROR;
        if (H5Sselect_all(file_spaces[0]) < 0)
            TEST_ERROR;

        /* Read entire file buffer and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&fbufs[0], false) < 0)
            TEST_ERROR;

        /*
         * Test 6: Strided <> Contiguous 2D I/O
         */
        /* Strided selection in memory */
        start[0]  = 1;
        start[1]  = 0;
        stride[0] = 2;
        stride[1] = 1;
        count[0]  = SEL_IO_DIM0 / 2;
        count[1]  = SEL_IO_DIM1;
        block[0]  = 1;
        block[1]  = 1;
        if (H5Sselect_hyperslab(mem_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Contiguous selection in file */
        if (H5Sselect_hyperslab(file_spaces[1], H5S_SELECT_SET, start, NULL, count, NULL) < 0)
            TEST_ERROR;

        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1], element_sizes,
                                    (int **)&wbufs[1]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0; i < SEL_IO_DIM0 / 2; i++)
            for (j = 0; j < SEL_IO_DIM1; j++)
                fbuf2[i + 1][j] = wbuf2[(2 * i) + 1][j];

        /* Update expected read buf */
        for (i = 0; i < SEL_IO_DIM0; i++)
            for (j = 0; j < SEL_IO_DIM1; j++)
                erbuf2[i][j] = -1;
        for (i = 0; i < SEL_IO_DIM0 / 2; i++)
            for (j = 0; j < SEL_IO_DIM1; j++)
                erbuf2[(2 * i) + 1][j] = wbuf2[(2 * i) + 1][j];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&erbufs[1], false) < 0)
            TEST_ERROR;

        /* Reset selections */
        if (H5Sselect_all(mem_spaces[1]) < 0)
            TEST_ERROR;
        if (H5Sselect_all(file_spaces[1]) < 0)
            TEST_ERROR;

        /* Read entire file buffer and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&fbufs[1], false) < 0)
            TEST_ERROR;

        /*
         * Test 7: Contiguous <> Strided 2D I/O
         */
        /* Contiguous selection in memory */
        start[0] = 0;
        start[1] = 1;
        count[0] = SEL_IO_DIM0;
        count[1] = SEL_IO_DIM1 / 2;
        if (H5Sselect_hyperslab(mem_spaces[1], H5S_SELECT_SET, start, NULL, count, NULL) < 0)
            TEST_ERROR;

        /* Strided selection in file */
        stride[0] = 1;
        stride[1] = 2;
        block[0]  = 1;
        block[1]  = 1;
        if (H5Sselect_hyperslab(file_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1], element_sizes,
                                    (int **)&wbufs[1]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0; i < SEL_IO_DIM0; i++)
            for (j = 0; j < SEL_IO_DIM1 / 2; j++)
                fbuf2[i][(2 * j) + 1] = wbuf2[i][j + 1];

        /* Update expected read buf */
        for (i = 0; i < SEL_IO_DIM0; i++)
            for (j = 0; j < SEL_IO_DIM1; j++)
                erbuf2[i][j] = -1;
        for (i = 0; i < SEL_IO_DIM0; i++)
            for (j = 0; j < SEL_IO_DIM1 / 2; j++)
                erbuf2[i][j + 1] = wbuf2[i][j + 1];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&erbufs[1], false) < 0)
            TEST_ERROR;

        /* Reset selections */
        if (H5Sselect_all(mem_spaces[1]) < 0)
            TEST_ERROR;
        if (H5Sselect_all(file_spaces[1]) < 0)
            TEST_ERROR;

        /* Read entire file buffer and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&fbufs[1], false) < 0)
            TEST_ERROR;

        /*
         * Test 8: Strided <> Strided 2D I/O
         */
        /* SEL_IO_DIM0 and SEL_IO_DIM1 must be even */
        assert(SEL_IO_DIM0 / 2 == (SEL_IO_DIM0 + 1) / 2);
        assert(SEL_IO_DIM1 / 2 == (SEL_IO_DIM1 + 1) / 2);

        /* Strided selection (across dim 1) in memory */
        start[0]  = 0;
        start[1]  = 1;
        stride[0] = 1;
        stride[1] = 2;
        count[0]  = SEL_IO_DIM0;
        count[1]  = SEL_IO_DIM1 / 2;
        block[0]  = 1;
        block[1]  = 1;
        if (H5Sselect_hyperslab(mem_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Strided selection (across dim 0) in file */
        start[0]  = 1;
        start[1]  = 0;
        stride[0] = 2;
        stride[1] = 1;
        count[0]  = SEL_IO_DIM0 / 2;
        count[1]  = SEL_IO_DIM1;
        block[0]  = 1;
        block[1]  = 1;
        if (H5Sselect_hyperslab(file_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1], element_sizes,
                                    (int **)&wbufs[1]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0, i2 = 1, j2 = 0; i < SEL_IO_DIM0; i++)
            for (j = 1; j < SEL_IO_DIM1; j += 2) {
                assert(i2 < SEL_IO_DIM0);
                fbuf2[i2][j2] = wbuf2[i][j];
                if (++j2 == SEL_IO_DIM1) {
                    i2 += 2;
                    j2 = 0;
                }
            }

        /* Update expected read buf */
        for (i = 0; i < SEL_IO_DIM0; i++)
            for (j = 0; j < SEL_IO_DIM1; j++)
                erbuf2[i][j] = -1;
        for (i = 0; i < SEL_IO_DIM0; i++)
            for (j = 1; j < SEL_IO_DIM1; j += 2)
                erbuf2[i][j] = wbuf2[i][j];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&erbufs[1], false) < 0)
            TEST_ERROR;

        /* Reset selections */
        if (H5Sselect_all(mem_spaces[1]) < 0)
            TEST_ERROR;
        if (H5Sselect_all(file_spaces[1]) < 0)
            TEST_ERROR;

        /* Read entire file buffer and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&fbufs[1], false) < 0)
            TEST_ERROR;

        /*
         * Test 9: Strided 1D <> Strided 2D I/O
         */
        /* Strided selection in memory */
        start[0]  = 1;
        stride[0] = 2;
        count[0]  = (SEL_IO_DIM0 * SEL_IO_DIM1) / 2;
        block[0]  = 1;
        if (H5Sselect_hyperslab(mem_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Strided selection (across dim 1) in file */
        start[0]  = 0;
        start[1]  = 1;
        stride[0] = 1;
        stride[1] = 2;
        count[0]  = SEL_IO_DIM0;
        count[1]  = SEL_IO_DIM1 / 2;
        block[0]  = 1;
        block[1]  = 1;
        if (H5Sselect_hyperslab(file_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[0], &file_spaces[1], &addrs[1], element_sizes,
                                    (int **)&wbufs[0]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 1, i2 = 0, j2 = 1; i < (SEL_IO_DIM0 * SEL_IO_DIM1); i += 2) {
            assert(i2 < SEL_IO_DIM0);
            fbuf2[i2][j2] = wbuf1[i];
            j2 += 2;
            if (j2 >= SEL_IO_DIM1) {
                i2++;
                j2 = 1;
            }
        }

        /* Update expected read buf */
        for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1); i++)
            erbuf1[i] = -1;
        for (i = 1; i < (SEL_IO_DIM0 * SEL_IO_DIM1); i += 2)
            erbuf1[i] = wbuf1[i];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&erbufs[0], false) < 0)
            TEST_ERROR;

        /* Reset selections */
        if (H5Sselect_all(mem_spaces[0]) < 0)
            TEST_ERROR;
        if (H5Sselect_all(file_spaces[1]) < 0)
            TEST_ERROR;

        /* Read entire file buffer and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[0], &file_spaces[1], &addrs[1],
                                          element_sizes, 1, (int **)&fbufs[1], false) < 0)
            TEST_ERROR;

        /*
         * Test 10: Strided 2D <> Strided 1D I/O
         */
        /* Strided selection (across dim 0) in memory */
        start[0]  = 0;
        start[1]  = 0;
        stride[0] = 2;
        stride[1] = 1;
        count[0]  = SEL_IO_DIM0 / 2;
        count[1]  = SEL_IO_DIM1;
        block[0]  = 1;
        block[1]  = 1;
        if (H5Sselect_hyperslab(mem_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Strided selection in file */
        start[0]  = 0;
        stride[0] = 2;
        count[0]  = (SEL_IO_DIM0 * SEL_IO_DIM1) / 2;
        block[0]  = 1;
        if (H5Sselect_hyperslab(file_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
            TEST_ERROR;

        /* Issue write call */
        if (test_selection_io_write(lf, type, 1, &mem_spaces[1], &file_spaces[0], &addrs[0], element_sizes,
                                    (int **)&wbufs[1]) < 0)
            TEST_ERROR;

        /* Update file buf */
        for (i = 0, i2 = 0; i < SEL_IO_DIM0; i += 2)
            for (j = 0; j < SEL_IO_DIM1; j++) {
                assert(i2 < (SEL_IO_DIM0 * SEL_IO_DIM1));
                fbuf1[i2] = wbuf2[i][j];
                i2 += 2;
            }

        /* Update expected read buf */
        for (i = 0; i < SEL_IO_DIM0; i++)
            for (j = 0; j < SEL_IO_DIM1; j++)
                erbuf2[i][j] = -1;
        for (i = 0; i < SEL_IO_DIM0; i += 2)
            for (j = 0; j < SEL_IO_DIM1; j++)
                erbuf2[i][j] = wbuf2[i][j];

        /* Read and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&erbufs[1], false) < 0)
            TEST_ERROR;

        /* Reset selections */
        if (H5Sselect_all(mem_spaces[1]) < 0)
            TEST_ERROR;
        if (H5Sselect_all(file_spaces[0]) < 0)
            TEST_ERROR;

        /* Read entire file buffer and verify */
        if (test_selection_io_read_verify(lf, type, 1, &mem_spaces[1], &file_spaces[0], &addrs[0],
                                          element_sizes, 1, (int **)&fbufs[0], false) < 0)
            TEST_ERROR;

        /* Run tests with full and partial element sizes array */
        for (shorten_element_sizes = 0; shorten_element_sizes <= 1; shorten_element_sizes++) {
            /*
             * Test 11: Strided <> Strided 1D and 2D I/O
             */
            /* SEL_IO_DIM1 must be even */
            assert(SEL_IO_DIM1 / 2 == (SEL_IO_DIM1 + 1) / 2);

            /* Strided selection in memory (1D) */
            start[0]  = 0;
            stride[0] = 2;
            count[0]  = (SEL_IO_DIM0 * SEL_IO_DIM1) / 2;
            block[0]  = 1;
            if (H5Sselect_hyperslab(mem_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
                TEST_ERROR;

            /* Strided selection in file (1D) */
            start[0] = 1;
            if (H5Sselect_hyperslab(file_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
                TEST_ERROR;

            /* Strided selection (across dim 0) in memory (2D) */
            start[0]  = 1;
            start[1]  = 0;
            stride[0] = 2;
            stride[1] = 1;
            count[0]  = SEL_IO_DIM0 / 2;
            count[1]  = SEL_IO_DIM1;
            block[0]  = 1;
            block[1]  = 1;
            if (H5Sselect_hyperslab(mem_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
                TEST_ERROR;

            /* Strided selection (across dim 1) in file (2D) */
            start[0]  = 0;
            start[1]  = 1;
            stride[0] = 1;
            stride[1] = 2;
            count[0]  = SEL_IO_DIM0;
            count[1]  = SEL_IO_DIM1 / 2;
            block[0]  = 1;
            block[1]  = 1;
            if (H5Sselect_hyperslab(file_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
                TEST_ERROR;

            /* Issue write call */
            if (test_selection_io_write(lf, type, 2, mem_spaces, file_spaces, addrs, element_sizes,
                                        (int **)wbufs) < 0)
                TEST_ERROR;

            /* Update file bufs */
            for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1) / 2; i++)
                fbuf1[(2 * i) + 1] = wbuf1[2 * i];
            for (i = 1, i2 = 0, j2 = 1; i < SEL_IO_DIM0; i += 2)
                for (j = 0; j < SEL_IO_DIM1; j++) {
                    assert(i2 < SEL_IO_DIM0);
                    fbuf2[i2][j2] = wbuf2[i][j];
                    j2 += 2;
                    if (j2 >= SEL_IO_DIM1) {
                        i2++;
                        j2 = 1;
                    }
                }

            /* Update expected read bufs */
            for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1); i++)
                erbuf1[i] = -1;
            for (i = 0; i < (SEL_IO_DIM0 * SEL_IO_DIM1) / 2; i++)
                erbuf1[2 * i] = wbuf1[2 * i];
            for (i = 0; i < SEL_IO_DIM0; i++)
                for (j = 0; j < SEL_IO_DIM1; j++)
                    erbuf2[i][j] = -1;
            for (i = 1; i < SEL_IO_DIM0; i += 2)
                for (j = 0; j < SEL_IO_DIM1; j++)
                    erbuf2[i][j] = wbuf2[i][j];

            /* Read and verify */
            if (test_selection_io_read_verify(lf, type, 2, mem_spaces, file_spaces, addrs, element_sizes, 2,
                                              (int **)erbufs, false) < 0)
                TEST_ERROR;

            /* Reset selections */
            if (H5Sselect_all(mem_spaces[0]) < 0)
                TEST_ERROR;
            if (H5Sselect_all(file_spaces[0]) < 0)
                TEST_ERROR;
            if (H5Sselect_all(mem_spaces[1]) < 0)
                TEST_ERROR;
            if (H5Sselect_all(file_spaces[1]) < 0)
                TEST_ERROR;

            /* Read entire file buffer and verify */
            if (test_selection_io_read_verify(lf, type, 2, mem_spaces, file_spaces, addrs, element_sizes, 2,
                                              (int **)fbufs, false) < 0)
                TEST_ERROR;

            /*
             * Test 12: Strided <> Strided 2D I/O, 2 different selections in the same memory buffer
             */
            /* Switch mem and file spaces to both be 2D */
            if (H5Sset_extent_simple(mem_spaces[0], 2, dims2, NULL) < 0)
                TEST_ERROR;
            if (H5Sset_extent_simple(file_spaces[0], 2, dims2, NULL) < 0)
                TEST_ERROR;

            /* Strided selection in memory (1st) */
            start[0]  = 0;
            start[1]  = 0;
            stride[0] = 2;
            stride[1] = 1;
            count[0]  = SEL_IO_DIM0 / 2;
            count[1]  = SEL_IO_DIM1;
            block[0]  = 1;
            block[1]  = 1;
            if (H5Sselect_hyperslab(mem_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
                TEST_ERROR;

            /* Strided selection (across dim 0) in memory (2nd) */
            start[0] = 1;
            if (H5Sselect_hyperslab(mem_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
                TEST_ERROR;

            /* Strided selection in file (1st) */
            start[0]  = 0;
            start[1]  = 0;
            stride[0] = 1;
            stride[1] = 2;
            count[0]  = SEL_IO_DIM0;
            count[1]  = SEL_IO_DIM1 / 2;
            block[0]  = 1;
            block[1]  = 1;
            if (H5Sselect_hyperslab(file_spaces[0], H5S_SELECT_SET, start, stride, count, block) < 0)
                TEST_ERROR;

            /* Strided selection (across dim 1) in file (2nd) */
            start[0]  = 0;
            start[1]  = 1;
            stride[0] = 1;
            stride[1] = 2;
            count[0]  = SEL_IO_DIM0;
            count[1]  = SEL_IO_DIM1 / 2;
            block[0]  = 1;
            block[1]  = 1;
            if (H5Sselect_hyperslab(file_spaces[1], H5S_SELECT_SET, start, stride, count, block) < 0)
                TEST_ERROR;

            /* Use the same memory buffer for both selections */
            wbufs[0] = wbuf2[0];

            /* Shorten wbuf array */
            if (shorten_element_sizes)
                wbufs[1] = NULL;
            else
                wbufs[1] = wbufs[0];

            /* Issue write call */
            if (test_selection_io_write(lf, type, 2, mem_spaces, file_spaces, addrs, element_sizes,
                                        (int **)wbufs) < 0)
                TEST_ERROR;

            /* Update file bufs - need to reuse 1D array so data stays consistent, so use math to
             * find 1D index into 2D array */
            for (i = 0, i2 = 0, j2 = 0; i < SEL_IO_DIM0; i += 2)
                for (j = 0; j < SEL_IO_DIM1; j++) {
                    assert(i2 < SEL_IO_DIM0);
                    fbuf1[(i2 * SEL_IO_DIM1) + j2] = wbuf2[i][j];
                    j2 += 2;
                    if (j2 >= SEL_IO_DIM1) {
                        i2++;
                        j2 = 0;
                    }
                }
            for (i = 1, i2 = 0, j2 = 1; i < SEL_IO_DIM0; i += 2)
                for (j = 0; j < SEL_IO_DIM1; j++) {
                    assert(i2 < SEL_IO_DIM0);
                    fbuf2[i2][j2] = wbuf2[i][j];
                    j2 += 2;
                    if (j2 >= SEL_IO_DIM1) {
                        i2++;
                        j2 = 1;
                    }
                }

            /* Update expected read buf */
            for (i = 0; i < SEL_IO_DIM0; i++)
                for (j = 0; j < SEL_IO_DIM1; j++)
                    erbuf2[i][j] = -1;
            for (i = 0; i < SEL_IO_DIM0; i += 2)
                for (j = 0; j < SEL_IO_DIM1; j++)
                    erbuf2[i][j] = wbuf2[i][j];
            for (i = 1; i < SEL_IO_DIM0; i += 2)
                for (j = 0; j < SEL_IO_DIM1; j++)
                    erbuf2[i][j] = wbuf2[i][j];

            /* Read and verify */
            if (test_selection_io_read_verify(lf, type, 2, mem_spaces, file_spaces, addrs, element_sizes, 1,
                                              (int **)&erbufs[1], shorten_element_sizes ? true : false) < 0)
                TEST_ERROR;

            /* Reset selections */
            if (H5Sselect_all(mem_spaces[0]) < 0)
                TEST_ERROR;
            if (H5Sselect_all(file_spaces[0]) < 0)
                TEST_ERROR;
            if (H5Sselect_all(mem_spaces[1]) < 0)
                TEST_ERROR;
            if (H5Sselect_all(file_spaces[1]) < 0)
                TEST_ERROR;

            /* Read entire file buffer and verify */
            if (test_selection_io_read_verify(lf, type, 2, mem_spaces, file_spaces, addrs, element_sizes, 2,
                                              (int **)fbufs, false) < 0)
                TEST_ERROR;

            /* Reset first spaces to 1D */
            if (H5Sset_extent_simple(mem_spaces[0], 1, dims1, NULL) < 0)
                TEST_ERROR;
            if (H5Sset_extent_simple(file_spaces[0], 1, dims1, NULL) < 0)
                TEST_ERROR;

            /* Reset write buffer array */
            wbufs[0] = wbuf1;
            wbufs[1] = wbuf2[0];

            /* Change to shortened element sizes array */
            element_sizes[1] = 0;
        }

        /* Reset element sizes array */
        element_sizes[1] = element_sizes[0];
    }

    /*
     * Cleanup
     */
    /* Close file */
    if (H5FDclose(lf) < 0)
        TEST_ERROR;

    h5_delete_test_file(FILENAME[0], fapl_id);

    /* Close the fapl */
    if (H5Pclose(fapl_id) < 0)
        TEST_ERROR;

    /* Close dataspaces */
    for (i = 0; i < 2; i++) {
        if (H5Sclose(mem_spaces[i]) < 0)
            TEST_ERROR;
        if (H5Sclose(file_spaces[i]) < 0)
            TEST_ERROR;
    }

    PASSED();
    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Pclose(fapl_id);
        H5FDclose(lf);
        for (i = 0; i < 2; i++) {
            H5Sclose(mem_spaces[i]);
            H5Sclose(file_spaces[i]);
        }
    }
    H5E_END_TRY
    return -1;
} /* end test_selection_io() */

/*-------------------------------------------------------------------------
 * Function:    main
 *
 * Purpose:     Tests the basic features of Virtual File Drivers
 *
 * Return:      EXIT_SUCCESS/EXIT_FAILURE
 *
 *-------------------------------------------------------------------------
 */
int
main(void)
{
    char *env_h5_drvr = NULL;
    int   nerrors     = 0;

    /* Don't run VFD tests when HDF5_DRIVER is set. These tests expect a
     * specific VFD to be set and HDF5_DRIVER being set can interfere
     * with that.
     */
    env_h5_drvr = HDgetenv(HDF5_DRIVER);
    if (env_h5_drvr) {
        printf(" -- SKIPPED VFD tests because %s is set -- \n", HDF5_DRIVER);
        exit(EXIT_SUCCESS);
    }

    h5_reset();

    printf("Testing basic Virtual File Driver functionality.\n");

    setup_rand();

    nerrors += test_sec2() < 0 ? 1 : 0;
    nerrors += test_core() < 0 ? 1 : 0;
    nerrors += test_direct() < 0 ? 1 : 0;
    nerrors += test_family() < 0 ? 1 : 0;
    nerrors += test_family_compat() < 0 ? 1 : 0;
    nerrors += test_family_member_fapl() < 0 ? 1 : 0;
    nerrors += test_multi() < 0 ? 1 : 0;
    nerrors += test_multi_compat() < 0 ? 1 : 0;
    nerrors += test_log() < 0 ? 1 : 0;
    nerrors += test_stdio() < 0 ? 1 : 0;
    nerrors += test_windows() < 0 ? 1 : 0;
    nerrors += test_ros3() < 0 ? 1 : 0;
    nerrors += test_splitter() < 0 ? 1 : 0;
    nerrors += test_vector_io("sec2") < 0 ? 1 : 0;
    nerrors += test_vector_io("stdio") < 0 ? 1 : 0;
    nerrors += test_selection_io("sec2") < 0 ? 1 : 0;
    nerrors += test_selection_io("stdio") < 0 ? 1 : 0;
    nerrors += test_ctl() < 0 ? 1 : 0;

    if (nerrors) {
        printf("***** %d Virtual File Driver TEST%s FAILED! *****\n", nerrors, nerrors > 1 ? "S" : "");
        return EXIT_FAILURE;
    }

    printf("All Virtual File Driver tests passed.\n");

    return EXIT_SUCCESS;
} /* end main() */


context:
space:
mode: