summaryrefslogtreecommitdiffstats
path: root/src/H5Gdeprec.c
blob: 65e71e8d5920cf949451bbe2e78ddd6b2861f35a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*-------------------------------------------------------------------------
 *
 * Created:	H5Gdeprec.c
 *
 * Purpose:	Deprecated functions from the H5G interface.  These
 *              functions are here for compatibility purposes and may be
 *              removed in the future.  Applications should switch to the
 *              newer APIs.
 *
 *-------------------------------------------------------------------------
 */

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

#include "H5Gmodule.h" /* This source code file is part of the H5G module */

/***********/
/* Headers */
/***********/
#include "H5private.h"   /* Generic Functions			*/
#include "H5ACprivate.h" /* Metadata cache			*/
#include "H5CXprivate.h" /* API Contexts                         */
#include "H5Eprivate.h"  /* Error handling		  	*/
#include "H5Gpkg.h"      /* Groups		  		*/
#include "H5Iprivate.h"  /* IDs			  		*/
#include "H5Lprivate.h"  /* Links                                */
#include "H5Pprivate.h"  /* Property lists                       */
#include "H5VLprivate.h" /* Virtual Object Layer                 */

#include "H5VLnative_private.h" /* Native VOL connector                     */

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

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

#ifndef H5_NO_DEPRECATED_SYMBOLS
/* User data for path traversal routine for getting object info */
typedef struct {
    H5G_stat_t *statbuf;     /* Stat buffer about object */
    hbool_t     follow_link; /* Whether we are following a link or not */
    H5F_t      *loc_file;    /* Pointer to the file the location is in */
} H5G_trav_goi_t;

/********************/
/* Package Typedefs */
/********************/

/********************/
/* Local Prototypes */
/********************/
static herr_t H5G__get_objinfo_cb(H5G_loc_t *grp_loc /*in*/, const char *name, const H5O_link_t *lnk,
                                  H5G_loc_t *obj_loc, void *_udata /*in,out*/,
                                  H5G_own_loc_t *own_loc /*out*/);
#endif /* H5_NO_DEPRECATED_SYMBOLS */

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

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

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

#ifndef H5_NO_DEPRECATED_SYMBOLS

/*-------------------------------------------------------------------------
 * Function:	H5G_map_obj_type
 *
 * Purpose:	Maps the object type to the older "group" object type
 *
 * Return:	Object type (can't fail)
 *
 *-------------------------------------------------------------------------
 */
H5G_obj_t
H5G_map_obj_type(H5O_type_t obj_type)
{
    H5G_obj_t ret_value = H5G_UNKNOWN; /* Return value */

    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
    FUNC_ENTER_NOAPI_NOINIT_NOERR

    /* Map object type to older "group" object type */
    switch (obj_type) {
        case H5O_TYPE_GROUP:
            ret_value = H5G_GROUP;
            break;

        case H5O_TYPE_DATASET:
            ret_value = H5G_DATASET;
            break;

        case H5O_TYPE_NAMED_DATATYPE:
            ret_value = H5G_TYPE;
            break;

        case H5O_TYPE_MAP:
            /* Maps not supported in native VOL connector */

        case H5O_TYPE_UNKNOWN:
        case H5O_TYPE_NTYPES:
        default:
            ret_value = H5G_UNKNOWN;
    } /* end switch */

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_map_obj_type() */

/*-------------------------------------------------------------------------
 * Function:	H5Gcreate1
 *
 * Purpose:	Creates a new group relative to LOC_ID and gives it the
 *		specified NAME.  The group is opened for write access
 *		and it's object ID is returned.
 *
 *		The SIZE_HINT parameter specifies how much file space to reserve
 *		to store the names that will appear in this group. This number
 *		must be less than or equal to UINT32_MAX. If zero is supplied
 *		for the SIZE_HINT then a default size is chosen.
 *
 * Note:	Deprecated in favor of H5Gcreate2
 *
 * Return:	Success:	The object ID of a new, empty group open for
 *				writing.  Call H5Gclose() when finished with
 *				the group.
 *
 *		Failure:	H5I_INVALID_HID
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Gcreate1(hid_t loc_id, const char *name, size_t size_hint)
{
    void             *grp = NULL; /* New group created */
    H5VL_object_t    *vol_obj;    /* Object of loc_id */
    H5VL_loc_params_t loc_params;
    hid_t             tmp_gcpl  = H5I_INVALID_HID; /* Temporary group creation property list */
    hid_t             ret_value = H5I_INVALID_HID; /* Return value */

    FUNC_ENTER_API(H5I_INVALID_HID)
    H5TRACE3("i", "i*sz", loc_id, name, size_hint);

    /* Check arguments */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, H5I_INVALID_HID, "no name given")
    if (size_hint > UINT32_MAX)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, H5I_INVALID_HID, "size_hint cannot be larger than UINT32_MAX")

    /* Check if we need to create a non-standard GCPL */
    if (size_hint > 0) {
        H5O_ginfo_t     ginfo;    /* Group info property */
        H5P_genplist_t *gc_plist; /* Property list created */

        /* Get the default property list */
        if (NULL == (gc_plist = (H5P_genplist_t *)H5I_object(H5P_GROUP_CREATE_DEFAULT)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "not a property list")

        /* Make a copy of the default property list */
        if ((tmp_gcpl = H5P_copy_plist(gc_plist, FALSE)) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5I_INVALID_HID, "unable to copy the creation property list")

        /* Get pointer to the copied property list */
        if (NULL == (gc_plist = (H5P_genplist_t *)H5I_object(tmp_gcpl)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "not a property list")

        /* Get the group info property */
        if (H5P_get(gc_plist, H5G_CRT_GROUP_INFO_NAME, &ginfo) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, H5I_INVALID_HID, "can't get group info")

        /* Set the non-default local heap size hint */
        H5_CHECKED_ASSIGN(ginfo.lheap_size_hint, uint32_t, size_hint, size_t);
        if (H5P_set(gc_plist, H5G_CRT_GROUP_INFO_NAME, &ginfo) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set group info")
    }
    else
        tmp_gcpl = H5P_GROUP_CREATE_DEFAULT;

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, H5I_INVALID_HID, "can't set collective metadata read info")

    /* Set location parameters */
    loc_params.type     = H5VL_OBJECT_BY_SELF;
    loc_params.obj_type = H5I_get_type(loc_id);

    /* get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "invalid location identifier")

    /* Create the group */
    if (NULL ==
        (grp = H5VL_group_create(vol_obj, &loc_params, name, H5P_LINK_CREATE_DEFAULT, tmp_gcpl,
                                 H5P_GROUP_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL)))
        HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, H5I_INVALID_HID, "unable to create group")

    /* Get an ID for the group */
    if ((ret_value = H5VL_register(H5I_GROUP, grp, vol_obj->connector, TRUE)) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to register group")

done:
    if (H5I_INVALID_HID != tmp_gcpl && tmp_gcpl != H5P_GROUP_CREATE_DEFAULT)
        if (H5I_dec_ref(tmp_gcpl) < 0)
            HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, H5I_INVALID_HID, "unable to release property list")

    if (H5I_INVALID_HID == ret_value)
        if (grp && H5VL_group_close(vol_obj, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, H5I_INVALID_HID, "unable to release group")

    FUNC_LEAVE_API(ret_value)
} /* end H5Gcreate1() */

/*-------------------------------------------------------------------------
 * Function:	H5Gopen1
 *
 * Purpose:	Opens an existing group for modification.  When finished,
 *		call H5Gclose() to close it and release resources.
 *
 * Note:	Deprecated in favor of H5Gopen2
 *
 * Return:	Success:	Object ID of the group.
 *
 *		Failure:	H5I_INVALID_HID
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Gopen1(hid_t loc_id, const char *name)
{
    void             *grp     = NULL; /* Group opened */
    H5VL_object_t    *vol_obj = NULL; /* Object of loc_id */
    H5VL_loc_params_t loc_params;
    hid_t             ret_value = H5I_INVALID_HID; /* Return value */

    FUNC_ENTER_API(H5I_INVALID_HID)
    H5TRACE2("i", "i*s", loc_id, name);

    /* Check args */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, H5I_INVALID_HID, "no name")

    /* Set location parameters */
    loc_params.type     = H5VL_OBJECT_BY_SELF;
    loc_params.obj_type = H5I_get_type(loc_id);

    /* get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "invalid location identifier")

    /* Open the group */
    if (NULL == (grp = H5VL_group_open(vol_obj, &loc_params, name, H5P_GROUP_ACCESS_DEFAULT,
                                       H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL)))
        HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, H5I_INVALID_HID, "unable to open group")

    /* Get an ID for the group */
    if ((ret_value = H5VL_register(H5I_GROUP, grp, vol_obj->connector, TRUE)) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to register group")

done:
    if (H5I_INVALID_HID == ret_value)
        if (grp && H5VL_group_close(vol_obj, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, H5I_INVALID_HID, "unable to release group")

    FUNC_LEAVE_API(ret_value)
} /* end H5Gopen1() */

/*-------------------------------------------------------------------------
 * Function:	H5Glink
 *
 * Purpose:	Creates a link between two existing objects.  The new
 *              APIs to do this are H5Lcreate_hard and H5Lcreate_soft.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Glink(hid_t cur_loc_id, H5G_link_t type, const char *cur_name, const char *new_name)
{
    H5VL_link_create_args_t vol_cb_args;         /* Arguments to VOL callback */
    herr_t                  ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE4("e", "iLl*s*s", cur_loc_id, type, cur_name, new_name);

    /* Check arguments */
    if (!cur_name || !*cur_name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no current name specified")
    if (!new_name || !*new_name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no new name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(cur_loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Create link */
    if (type == H5L_TYPE_HARD) {
        H5VL_object_t    *vol_obj; /* Object of loc_id */
        H5VL_loc_params_t new_loc_params;
        H5VL_object_t     tmp_vol_obj; /* Temporary object */

        /* Set up new location struct */
        new_loc_params.type                         = H5VL_OBJECT_BY_NAME;
        new_loc_params.loc_data.loc_by_name.name    = new_name;
        new_loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

        /* Get the location object */
        if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(cur_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

        /* Construct a temporary VOL object */
        tmp_vol_obj.data      = NULL;
        tmp_vol_obj.connector = vol_obj->connector;

        /* Set up VOL callback arguments */
        vol_cb_args.op_type                                                = H5VL_LINK_CREATE_HARD;
        vol_cb_args.args.hard.curr_obj                                     = vol_obj->data;
        vol_cb_args.args.hard.curr_loc_params.type                         = H5VL_OBJECT_BY_NAME;
        vol_cb_args.args.hard.curr_loc_params.obj_type                     = H5I_get_type(cur_loc_id);
        vol_cb_args.args.hard.curr_loc_params.loc_data.loc_by_name.name    = cur_name;
        vol_cb_args.args.hard.curr_loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

        /* Create the link through the VOL */
        if (H5VL_link_create(&vol_cb_args, &tmp_vol_obj, &new_loc_params, H5P_LINK_CREATE_DEFAULT,
                             H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create link")
    } /* end if */
    else if (type == H5L_TYPE_SOFT) {
        H5VL_object_t    *vol_obj; /* Object of loc_id */
        H5VL_loc_params_t loc_params;

        /* Set up location struct */
        loc_params.type                         = H5VL_OBJECT_BY_NAME;
        loc_params.loc_data.loc_by_name.name    = new_name;
        loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
        loc_params.obj_type                     = H5I_get_type(cur_loc_id);

        /* get the location object */
        if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(cur_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

        /* Set up VOL callback arguments */
        vol_cb_args.op_type          = H5VL_LINK_CREATE_SOFT;
        vol_cb_args.args.soft.target = cur_name;

        /* Create the link through the VOL */
        if (H5VL_link_create(&vol_cb_args, vol_obj, &loc_params, H5P_LINK_CREATE_DEFAULT,
                             H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create link")
    } /* end else-if */
    else
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "Not a valid link type")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Glink() */

/*-------------------------------------------------------------------------
 * Function:	H5Glink2
 *
 * Purpose:	Creates a link between two existing objects.  The new
 *              APIs to do this are H5Lcreate_hard and H5Lcreate_soft.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Glink2(hid_t cur_loc_id, const char *cur_name, H5G_link_t type, hid_t new_loc_id, const char *new_name)
{
    H5VL_link_create_args_t vol_cb_args;         /* Arguments to VOL callback */
    herr_t                  ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE5("e", "i*sLli*s", cur_loc_id, cur_name, type, new_loc_id, new_name);

    /* Check arguments */
    if (!cur_name || !*cur_name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no current name specified")
    if (!new_name || !*new_name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no new name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(cur_loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Create the appropriate kind of link */
    if (type == H5L_TYPE_HARD) {
        H5VL_object_t    *vol_obj1; /* Object of loc_id */
        H5VL_object_t    *vol_obj2; /* Object of loc_id */
        H5VL_loc_params_t new_loc_params;

        /* Set up new location struct */
        new_loc_params.type                         = H5VL_OBJECT_BY_NAME;
        new_loc_params.obj_type                     = H5I_get_type(new_loc_id);
        new_loc_params.loc_data.loc_by_name.name    = new_name;
        new_loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

        /* Get the location objects */
        if (NULL == (vol_obj1 = (H5VL_object_t *)H5I_object(cur_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
        if (NULL == (vol_obj2 = (H5VL_object_t *)H5I_object(new_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

        /* Set up VOL callback arguments */
        vol_cb_args.op_type                                                = H5VL_LINK_CREATE_HARD;
        vol_cb_args.args.hard.curr_obj                                     = vol_obj1->data;
        vol_cb_args.args.hard.curr_loc_params.type                         = H5VL_OBJECT_BY_NAME;
        vol_cb_args.args.hard.curr_loc_params.obj_type                     = H5I_get_type(cur_loc_id);
        vol_cb_args.args.hard.curr_loc_params.loc_data.loc_by_name.name    = cur_name;
        vol_cb_args.args.hard.curr_loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

        /* Create the link through the VOL */
        if (H5VL_link_create(&vol_cb_args, vol_obj2, &new_loc_params, H5P_LINK_CREATE_DEFAULT,
                             H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create link")
    } /* end if */
    else if (type == H5L_TYPE_SOFT) {
        H5VL_object_t    *vol_obj; /* Object of loc_id */
        H5VL_loc_params_t loc_params;

        /* Soft links only need one location, the new_loc_id, but it's possible that
         * new_loc_id is H5L_SAME_LOC */
        if (new_loc_id == H5L_SAME_LOC)
            new_loc_id = cur_loc_id;

        /* Set up location struct */
        loc_params.type                         = H5VL_OBJECT_BY_NAME;
        loc_params.loc_data.loc_by_name.name    = new_name;
        loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
        loc_params.obj_type                     = H5I_get_type(new_loc_id);

        /* get the location object */
        if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(new_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

        /* Set up VOL callback arguments */
        vol_cb_args.op_type          = H5VL_LINK_CREATE_SOFT;
        vol_cb_args.args.soft.target = cur_name;

        /* Create the link through the VOL */
        if (H5VL_link_create(&vol_cb_args, vol_obj, &loc_params, H5P_LINK_CREATE_DEFAULT,
                             H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create link")
    } /* end else-if */
    else
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a valid link type")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Glink2() */

/*-------------------------------------------------------------------------
 * Function:	H5Gmove
 *
 * Purpose:	Moves and renames a link.  The new API to do this is H5Lmove.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gmove(hid_t src_loc_id, const char *src_name, const char *dst_name)
{
    H5VL_object_t    *vol_obj; /* Object of loc_id */
    H5VL_loc_params_t loc_params1;
    H5VL_loc_params_t loc_params2;
    herr_t            ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE3("e", "i*s*s", src_loc_id, src_name, dst_name);

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(src_loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    loc_params1.type                         = H5VL_OBJECT_BY_NAME;
    loc_params1.obj_type                     = H5I_get_type(src_loc_id);
    loc_params1.loc_data.loc_by_name.name    = src_name;
    loc_params1.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

    loc_params2.type                         = H5VL_OBJECT_BY_NAME;
    loc_params2.loc_data.loc_by_name.name    = dst_name;
    loc_params2.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

    /* get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(src_loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Move the link */
    if (H5VL_link_move(vol_obj, &loc_params1, NULL, &loc_params2, H5P_LINK_CREATE_DEFAULT,
                       H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTMOVE, FAIL, "couldn't move link")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gmove() */

/*-------------------------------------------------------------------------
 * Function:	H5Gmove2
 *
 * Purpose:	Moves and renames a link.  The new API to do this is H5Lmove.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gmove2(hid_t src_loc_id, const char *src_name, hid_t dst_loc_id, const char *dst_name)
{
    H5VL_object_t    *vol_obj1 = NULL; /* Object of src_id */
    H5VL_loc_params_t loc_params1;
    H5VL_object_t    *vol_obj2 = NULL; /* Object of dst_id */
    H5VL_loc_params_t loc_params2;
    herr_t            ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE4("e", "i*si*s", src_loc_id, src_name, dst_loc_id, dst_name);

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(dst_loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Set location parameter for source object */
    loc_params1.type                         = H5VL_OBJECT_BY_NAME;
    loc_params1.loc_data.loc_by_name.name    = src_name;
    loc_params1.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    loc_params1.obj_type                     = H5I_get_type(src_loc_id);

    /* Set location parameter for destination object */
    loc_params2.type                         = H5VL_OBJECT_BY_NAME;
    loc_params2.loc_data.loc_by_name.name    = dst_name;
    loc_params2.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    loc_params2.obj_type                     = H5I_get_type(dst_loc_id);

    if (H5L_SAME_LOC != src_loc_id)
        /* get the location object */
        if (NULL == (vol_obj1 = (H5VL_object_t *)H5I_object(src_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
    if (H5L_SAME_LOC != dst_loc_id)
        /* get the location object */
        if (NULL == (vol_obj2 = (H5VL_object_t *)H5I_object(dst_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Move the link */
    if (H5VL_link_move(vol_obj1, &loc_params1, vol_obj2, &loc_params2, H5P_LINK_CREATE_DEFAULT,
                       H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTMOVE, FAIL, "unable to move link")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gmove2() */

/*-------------------------------------------------------------------------
 * Function:	H5Gunlink
 *
 * Purpose:	Removes a link.  The new API is H5Ldelete/H5Ldelete_by_idx.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gunlink(hid_t loc_id, const char *name)
{
    H5VL_object_t            *vol_obj;     /* Object of loc_id */
    H5VL_link_specific_args_t vol_cb_args; /* Arguments to VOL callback */
    H5VL_loc_params_t         loc_params;
    herr_t                    ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE2("e", "i*s", loc_id, name);

    /* Check arguments */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    loc_params.type                         = H5VL_OBJECT_BY_NAME;
    loc_params.obj_type                     = H5I_get_type(loc_id);
    loc_params.loc_data.loc_by_name.name    = name;
    loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

    /* Get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Set up VOL callback arguments */
    vol_cb_args.op_type = H5VL_LINK_DELETE;

    /* Delete the link */
    if (H5VL_link_specific(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "couldn't delete link")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gunlink() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_linkval
 *
 * Purpose:	Retrieve's a soft link's data.  The new API is
 *              H5Lget_val/H5Lget_val_by_idx.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gget_linkval(hid_t loc_id, const char *name, size_t size, char *buf /*out*/)
{
    H5VL_object_t       *vol_obj;     /* Object of loc_id */
    H5VL_link_get_args_t vol_cb_args; /* Arguments to VOL callback */
    H5VL_loc_params_t    loc_params;
    herr_t               ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE4("e", "i*szx", loc_id, name, size, buf);

    /* Check arguments */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Set up location struct */
    loc_params.type                         = H5VL_OBJECT_BY_NAME;
    loc_params.obj_type                     = H5I_get_type(loc_id);
    loc_params.loc_data.loc_by_name.name    = name;
    loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

    /* Get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Set up VOL callback arguments */
    vol_cb_args.op_type               = H5VL_LINK_GET_VAL;
    vol_cb_args.args.get_val.buf      = buf;
    vol_cb_args.args.get_val.buf_size = size;

    /* Get the link value */
    if (H5VL_link_get(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "unable to get link value")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gget_linkval() */

/*-------------------------------------------------------------------------
 * Function:	H5Gset_comment
 *
 * Purpose:     Gives the specified object a comment.  The COMMENT string
 *		should be a null terminated string.  An object can have only
 *		one comment at a time.  Passing NULL for the COMMENT argument
 *		will remove the comment property from the object.
 *
 * Note:	Deprecated in favor of H5Oset_comment/H5Oset_comment_by_name
 *
 * Return:	Non-negative on success/Negative on failure
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gset_comment(hid_t loc_id, const char *name, const char *comment)
{
    H5VL_object_t                     *vol_obj;      /* Object of loc_id */
    H5VL_optional_args_t               vol_cb_args;  /* Arguments to VOL callback */
    H5VL_native_object_optional_args_t obj_opt_args; /* Arguments for optional operation */
    H5VL_loc_params_t                  loc_params;
    herr_t                             ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE3("e", "i*s*s", loc_id, name, comment);

    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Fill in location struct fields */
    loc_params.type                         = H5VL_OBJECT_BY_NAME;
    loc_params.loc_data.loc_by_name.name    = name;
    loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    loc_params.obj_type                     = H5I_get_type(loc_id);

    /* Get the location object */
    if (NULL == (vol_obj = H5VL_vol_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Set up VOL callback arguments */
    obj_opt_args.set_comment.comment = comment;
    vol_cb_args.op_type              = H5VL_NATIVE_OBJECT_SET_COMMENT;
    vol_cb_args.args                 = &obj_opt_args;

    /* Set the comment */
    if (H5VL_object_optional(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) <
        0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "unable to set comment value")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gset_comment() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_comment
 *
 * Purpose:	Return at most BUFSIZE characters of the comment for the
 *		specified object.  If BUFSIZE is large enough to hold the
 *		entire comment then the comment string will be null
 *		terminated, otherwise it will not.  If the object does not
 *		have a comment value then no bytes are copied to the BUF
 *		buffer.
 *
 * Note:	Deprecated in favor of H5Oget_comment/H5Oget_comment_by_name
 *
 * Return:	Success:	Number of characters in the comment counting
 *				the null terminator.  The value returned may
 *				be larger than the BUFSIZE argument.
 *
 *		Failure:	Negative
 *
 *-------------------------------------------------------------------------
 */
int
H5Gget_comment(hid_t loc_id, const char *name, size_t bufsize, char *buf /*out*/)
{
    H5VL_object_t                     *vol_obj;      /* Object of loc_id */
    H5VL_optional_args_t               vol_cb_args;  /* Arguments to VOL callback */
    H5VL_native_object_optional_args_t obj_opt_args; /* Arguments for optional operation */
    H5VL_loc_params_t                  loc_params;
    size_t                             comment_len = 0; /* Length of comment */
    int                                ret_value;       /* Return value */

    FUNC_ENTER_API(-1)
    H5TRACE4("Is", "i*szx", loc_id, name, bufsize, buf);

    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, -1, "no name specified")
    if (bufsize > 0 && !buf)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, -1, "no buffer specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, -1, "can't set collective metadata read info")

    /* Fill in location struct fields */
    loc_params.type                         = H5VL_OBJECT_BY_NAME;
    loc_params.loc_data.loc_by_name.name    = name;
    loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    loc_params.obj_type                     = H5I_get_type(loc_id);

    /* Get the location object */
    if (NULL == (vol_obj = H5VL_vol_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, -1, "invalid location identifier")

    /* Set up VOL callback arguments */
    obj_opt_args.get_comment.buf         = buf;
    obj_opt_args.get_comment.buf_size    = bufsize;
    obj_opt_args.get_comment.comment_len = &comment_len;
    vol_cb_args.op_type                  = H5VL_NATIVE_OBJECT_GET_COMMENT;
    vol_cb_args.args                     = &obj_opt_args;

    /* Get the comment */
    if (H5VL_object_optional(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) <
        0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTGET, -1, "unable to get comment value")

    /* Set return value */
    ret_value = (int)comment_len;

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gget_comment() */

/*-------------------------------------------------------------------------
 * Function:    H5Giterate
 *
 * Purpose:     Iterates over the entries of a group.  The LOC_ID and NAME
 *              identify the group over which to iterate and IDX indicates
 *              where to start iterating (zero means at the beginning).	 The
 *              OPERATOR is called for each member and the iteration
 *              continues until the operator returns non-zero or all members
 *              are processed. The operator is passed a group ID for the
 *              group being iterated, a member name, and OP_DATA for each
 *              member.
 *
 * NOTE:        Deprecated in favor of H5Literate
 *
 * Return:      Success:    The return value of the first operator that
 *                          returns non-zero, or zero if all members were
 *                          processed with no operator returning non-zero.
 *
 *              Failure:    Negative if something goes wrong within the
 *                          library, or the negative value returned by one
 *                          of the operators.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Giterate(hid_t loc_id, const char *name, int *idx_p, H5G_iterate_t op, void *op_data)
{
    H5VL_object_t                    *vol_obj;      /* Object of loc_id */
    H5VL_optional_args_t              vol_cb_args;  /* Arguments to VOL callback */
    H5VL_native_group_optional_args_t grp_opt_args; /* Arguments for optional operation */
    hsize_t                           last_obj = 0; /* Pointer to index value */
    herr_t                            ret_value;    /* Return value                     */

    FUNC_ENTER_API(FAIL)
    H5TRACE5("e", "i*s*IsGi*x", loc_id, name, idx_p, op, op_data);

    /* Check args */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified")
    if (idx_p && *idx_p < 0)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index specified")
    if (!op)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no operator specified")

    /* Get the object pointer */
    if (NULL == (vol_obj = H5VL_vol_object(loc_id)))
        HGOTO_ERROR(H5E_ID, H5E_BADTYPE, (-1), "invalid identifier")

    /* Set up VOL callback arguments */
    grp_opt_args.iterate_old.loc_params.type                         = H5VL_OBJECT_BY_NAME;
    grp_opt_args.iterate_old.loc_params.loc_data.loc_by_name.name    = name;
    grp_opt_args.iterate_old.loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    grp_opt_args.iterate_old.loc_params.obj_type                     = H5I_get_type(loc_id);
    grp_opt_args.iterate_old.idx                                     = (hsize_t)(idx_p == NULL ? 0 : *idx_p);
    grp_opt_args.iterate_old.last_obj                                = &last_obj;
    grp_opt_args.iterate_old.op                                      = op;
    grp_opt_args.iterate_old.op_data                                 = op_data;
    vol_cb_args.op_type                                              = H5VL_NATIVE_GROUP_ITERATE_OLD;
    vol_cb_args.args                                                 = &grp_opt_args;

    /* Call private iteration function, through VOL callback */
    if ((ret_value = H5VL_group_optional(vol_obj, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL)) <
        0)
        HERROR(H5E_SYM, H5E_BADITER, "error iterating over group's links");

    /* Set value to return */
    if (idx_p)
        *idx_p = (int)last_obj;

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Giterate() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_num_objs
 *
 * Purpose:     Returns the number of objects in the group.  It iterates
 *              all B-tree leaves and sum up total number of group members.
 *
 * Note:	Deprecated in favor of H5Gget_info
 *
 * Return:	Success:        Non-negative
 *		Failure:	Negative
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gget_num_objs(hid_t loc_id, hsize_t *num_objs /*out*/)
{
    H5VL_object_t        *vol_obj = NULL;      /* Object of loc_id */
    H5VL_group_get_args_t vol_cb_args;         /* Arguments to VOL callback */
    H5I_type_t            id_type;             /* Type of ID */
    H5G_info_t            grp_info;            /* Group information */
    herr_t                ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE2("e", "ix", loc_id, num_objs);

    /* Check args */
    id_type = H5I_get_type(loc_id);
    if (!(H5I_GROUP == id_type || H5I_FILE == id_type))
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid group (or file) ID")
    if (!num_objs)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "bad pointer to # of objects")

    /* Set up VOL callback & object access arguments */
    vol_cb_args.op_type = H5VL_GROUP_GET_INFO;
    if (H5VL_setup_self_args(loc_id, &vol_obj, &vol_cb_args.args.get_info.loc_params) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set object access arguments")
    vol_cb_args.args.get_info.ginfo = &grp_info;

    /* Retrieve the group's information */
    if (H5VL_group_get(vol_obj, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "unable to get group info")

    /* Set the number of objects [i.e. links] in the group */
    *num_objs = grp_info.nlinks;

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gget_num_objs() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_objinfo
 *
 * Purpose:	Returns information about an object.  If FOLLOW_LINK is
 *		non-zero then all symbolic links are followed; otherwise all
 *		links except the last component of the name are followed.
 *
 * Note:	Deprecated in favor of H5Lget_info/H5Oget_info
 *
 * Return:	Non-negative on success, with the fields of STATBUF (if
 *              non-null) initialized. Negative on failure.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gget_objinfo(hid_t loc_id, const char *name, hbool_t follow_link, H5G_stat_t *statbuf /*out*/)
{
    H5VL_object_t                    *vol_obj = NULL;      /* Object of loc_id */
    H5VL_optional_args_t              vol_cb_args;         /* Arguments to VOL callback */
    H5VL_native_group_optional_args_t grp_opt_args;        /* Arguments for optional operation */
    herr_t                            ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL);
    H5TRACE4("e", "i*sbx", loc_id, name, follow_link, statbuf);

    /* Check arguments */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info");

    /* Get the location object */
    if (NULL == (vol_obj = H5VL_vol_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier");

    /* Set up VOL callback arguments */
    grp_opt_args.get_objinfo.loc_params.type                         = H5VL_OBJECT_BY_NAME;
    grp_opt_args.get_objinfo.loc_params.loc_data.loc_by_name.name    = name;
    grp_opt_args.get_objinfo.loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    grp_opt_args.get_objinfo.loc_params.obj_type                     = H5I_get_type(loc_id);
    grp_opt_args.get_objinfo.follow_link                             = follow_link;
    grp_opt_args.get_objinfo.statbuf                                 = statbuf;
    vol_cb_args.op_type                                              = H5VL_NATIVE_GROUP_GET_OBJINFO;
    vol_cb_args.args                                                 = &grp_opt_args;

    /* Retrieve the object's information */
    if (H5VL_group_optional(vol_obj, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "can't get info for object: '%s'", name);

done:
    FUNC_LEAVE_API(ret_value);
} /* end H5Gget_objinfo() */

/*-------------------------------------------------------------------------
 * Function:	H5G__get_objinfo_cb
 *
 * Purpose:	Callback for retrieving info about an object.  This routine
 *              gets the info
 *
 * Return:	Non-negative on success/Negative on failure
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5G__get_objinfo_cb(H5G_loc_t H5_ATTR_UNUSED *grp_loc /*in*/, const char *name, const H5O_link_t *lnk,
                    H5G_loc_t *obj_loc, void *_udata /*in,out*/, H5G_own_loc_t *own_loc /*out*/)
{
    H5G_trav_goi_t *udata     = (H5G_trav_goi_t *)_udata; /* User data passed in */
    herr_t          ret_value = SUCCEED;                  /* Return value */

    FUNC_ENTER_PACKAGE

    /* Check if the name in this group resolved to a valid link */
    if (lnk == NULL && obj_loc == NULL)
        HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "'%s' doesn't exist", name);

    /* Only modify user's buffer if it's available */
    if (udata->statbuf) {
        H5G_stat_t *statbuf = udata->statbuf; /* Convenience pointer for statbuf */

        /* Common code to retrieve the file's fileno */
        if (H5F_get_fileno((obj_loc ? obj_loc : grp_loc)->oloc->file, &statbuf->fileno[0]) < 0)
            HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "unable to read fileno");

        /* Info for soft and UD links is gotten by H5L_get_info. If we have
         *      a hard link, follow it and get info on the object
         */
        if (udata->follow_link || !lnk || (lnk->type == H5L_TYPE_HARD)) {
            H5O_info2_t       dm_info;  /* Data model information */
            H5O_native_info_t nat_info; /* Native information */
            haddr_t           obj_addr; /* Address of object */

            /* Go retrieve the data model & native object information */
            /* (don't need index & heap info) */
            assert(obj_loc);
            if (H5O_get_info(obj_loc->oloc, &dm_info, H5O_INFO_BASIC | H5O_INFO_TIME) < 0)
                HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to get data model object info")
            if (H5O_get_native_info(obj_loc->oloc, &nat_info, H5O_INFO_HDR) < 0)
                HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to get native object info")

            /* Get mapped object type */
            statbuf->type = H5G_map_obj_type(dm_info.type);

            /* Get object number (i.e. address) for object */
            if (H5VL_native_token_to_addr(obj_loc->oloc->file, H5I_FILE, dm_info.token, &obj_addr) < 0)
                HGOTO_ERROR(H5E_OHDR, H5E_CANTUNSERIALIZE, FAIL,
                            "can't deserialize object token into address")

            statbuf->objno[0] = (unsigned long)(obj_addr);
#if H5_SIZEOF_UINT64_T > H5_SIZEOF_LONG
            statbuf->objno[1] = (unsigned long)(obj_addr >> 8 * sizeof(long));
#else
            statbuf->objno[1] = 0;
#endif
            /* Get # of hard links pointing to object */
            statbuf->nlink = dm_info.rc;

            /* Get modification time for object */
            statbuf->mtime = dm_info.ctime;

            /* Retrieve the object header information */
            statbuf->ohdr.size    = nat_info.hdr.space.total;
            statbuf->ohdr.free    = nat_info.hdr.space.free;
            statbuf->ohdr.nmesgs  = nat_info.hdr.nmesgs;
            statbuf->ohdr.nchunks = nat_info.hdr.nchunks;
        } /* end if */
    }     /* end if */

done:
    /* Indicate that this callback didn't take ownership of the group *
     * location for the object */
    *own_loc = H5G_OWN_NONE;

    FUNC_LEAVE_NOAPI(ret_value);
} /* end H5G__get_objinfo_cb() */

/*-------------------------------------------------------------------------
 * Function:	H5G__get_objinfo
 *
 * Purpose:	Returns information about an object.
 *
 * Return:	Success:	Non-negative with info about the object
 *				returned through STATBUF if it isn't the null
 *				pointer.
 *
 *		Failure:	Negative
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5G__get_objinfo(const H5G_loc_t *loc, const char *name, hbool_t follow_link, H5G_stat_t *statbuf /*out*/)
{
    H5G_trav_goi_t udata;               /* User data for callback */
    herr_t         ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_PACKAGE;

    /* Sanity checks */
    assert(loc);
    assert(name && *name);

    /* Reset stat buffer */
    if (statbuf)
        memset(statbuf, 0, sizeof(H5G_stat_t));

    /* Set up user data for retrieving information */
    udata.statbuf     = statbuf;
    udata.follow_link = follow_link;
    udata.loc_file    = loc->oloc->file;

    /* Traverse the group hierarchy to locate the object to get info about */
    if (H5G_traverse(loc, name,
                     (unsigned)(follow_link ? H5G_TARGET_NORMAL : (H5G_TARGET_SLINK | H5G_TARGET_UDLINK)),
                     H5G__get_objinfo_cb, &udata) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_EXISTS, FAIL, "name doesn't exist");

    /* If we're pointing at a soft or UD link, get the real link length and type */
    if (statbuf && follow_link == 0) {
        H5L_info2_t linfo; /* Link information buffer */
        herr_t      ret;

        /* Get information about link to the object. If this fails, e.g.
         * because the object is ".", just treat the object as a hard link. */
        H5E_BEGIN_TRY
        {
            ret = H5L_get_info(loc, name, &linfo);
        }
        H5E_END_TRY;

        if (ret >= 0 && linfo.type != H5L_TYPE_HARD) {
            statbuf->linklen = linfo.u.val_size;
            if (linfo.type == H5L_TYPE_SOFT) {
                statbuf->type = H5G_LINK;
            }
            else {
                /* UD link. H5L_get_info checked for invalid link classes */
                assert(linfo.type >= H5L_TYPE_UD_MIN && linfo.type <= H5L_TYPE_MAX);
                statbuf->type = H5G_UDLINK;
            }
        }
    }

done:
    FUNC_LEAVE_NOAPI(ret_value);
} /* end H5G__get_objinfo() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_objname_by_idx
 *
 * Purpose:     Returns the name of objects in the group by giving index.
 *              If `name' is non-NULL then write up to `size' bytes into that
 *              buffer and always return the length of the entry name.
 *              Otherwise `size' is ignored and the function does not store the name,
 *              just returning the number of characters required to store the name.
 *              If an error occurs then the buffer pointed to by `name' (NULL or non-NULL)
 *              is unchanged and the function returns a negative value.
 *              If a zero is returned for the name's length, then there is no name
 *              associated with the ID.
 *
 * Note:	Deprecated in favor of H5Lget_name_by_idx
 *
 * Return:	Success:        Non-negative
 *		Failure:	Negative
 *
 *-------------------------------------------------------------------------
 */
ssize_t
H5Gget_objname_by_idx(hid_t loc_id, hsize_t idx, char *name /*out*/, size_t size)
{
    H5VL_object_t       *vol_obj;     /* Object of loc_id */
    H5VL_link_get_args_t vol_cb_args; /* Arguments to VOL callback */
    H5VL_loc_params_t    loc_params;
    size_t               name_len = 0; /* Length of object name */
    ssize_t              ret_value;    /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE4("Zs", "ihxz", loc_id, idx, name, size);

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, (-1), "can't set collective metadata read info")

    /* Set up location struct */
    loc_params.type                         = H5VL_OBJECT_BY_IDX;
    loc_params.loc_data.loc_by_idx.name     = ".";
    loc_params.loc_data.loc_by_idx.idx_type = H5_INDEX_NAME;
    loc_params.loc_data.loc_by_idx.order    = H5_ITER_INC;
    loc_params.loc_data.loc_by_idx.n        = idx;
    loc_params.loc_data.loc_by_idx.lapl_id  = H5P_LINK_ACCESS_DEFAULT;
    loc_params.obj_type                     = H5I_get_type(loc_id);

    /* Get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, (-1), "invalid location identifier")

    /* Set up VOL callback arguments */
    vol_cb_args.op_type                 = H5VL_LINK_GET_NAME;
    vol_cb_args.args.get_name.name_size = size;
    vol_cb_args.args.get_name.name      = name;
    vol_cb_args.args.get_name.name_len  = &name_len;

    /* Call internal function */
    if (H5VL_link_get(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTGET, (-1), "can't get object name")

    /* Set the return value */
    ret_value = (ssize_t)name_len;

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gget_objname_by_idx() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_objtype_by_idx
 *
 * Purpose:     Returns the type of objects in the group by giving index.
 *
 * Note:	Deprecated in favor of H5Lget_info/H5Oget_info
 *
 * Return:	Success:        H5G_GROUP(1), H5G_DATASET(2), H5G_TYPE(3)
 *		Failure:	H5G_UNKNOWN
 *
 *-------------------------------------------------------------------------
 */
H5G_obj_t
H5Gget_objtype_by_idx(hid_t loc_id, hsize_t idx)
{
    H5VL_object_t         *vol_obj;     /* Object of loc_id */
    H5VL_object_get_args_t vol_cb_args; /* Arguments to VOL callback */
    H5VL_loc_params_t      loc_params;
    H5O_info2_t            oinfo;     /* Object info (contains object type) */
    H5G_obj_t              ret_value; /* Return value */

    FUNC_ENTER_API(H5G_UNKNOWN)
    H5TRACE2("Go", "ih", loc_id, idx);

    /* Set location parameters */
    loc_params.type                         = H5VL_OBJECT_BY_IDX;
    loc_params.loc_data.loc_by_idx.name     = ".";
    loc_params.loc_data.loc_by_idx.idx_type = H5_INDEX_NAME;
    loc_params.loc_data.loc_by_idx.order    = H5_ITER_INC;
    loc_params.loc_data.loc_by_idx.n        = idx;
    loc_params.loc_data.loc_by_idx.lapl_id  = H5P_LINK_ACCESS_DEFAULT;
    loc_params.obj_type                     = H5I_get_type(loc_id);

    /* Get the location object */
    if (NULL == (vol_obj = H5VL_vol_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5G_UNKNOWN, "invalid location identifier")

    /* Set up VOL callback arguments */
    vol_cb_args.op_type              = H5VL_OBJECT_GET_INFO;
    vol_cb_args.args.get_info.oinfo  = &oinfo;
    vol_cb_args.args.get_info.fields = H5O_INFO_BASIC;

    /* Retrieve the object's basic information (which includes its type) */
    if (H5VL_object_get(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_BADTYPE, H5G_UNKNOWN, "can't get object info")

    /* Map to group object type */
    if (H5G_UNKNOWN == (ret_value = H5G_map_obj_type(oinfo.type)))
        HGOTO_ERROR(H5E_SYM, H5E_BADTYPE, H5G_UNKNOWN, "can't determine object type")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gget_objtype_by_idx() */
#endif /* H5_NO_DEPRECATED_SYMBOLS */