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-rw-r--r--MANIFEST2
-rw-r--r--src/CMakeLists.txt2
-rw-r--r--src/H5VLpassthru.c3061
-rw-r--r--src/H5VLpassthru.h46
-rw-r--r--src/Makefile.am4
-rw-r--r--src/hdf5.h5
6 files changed, 3116 insertions, 4 deletions
diff --git a/MANIFEST b/MANIFEST
index 4342d97..c24fb32 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -896,6 +896,8 @@
./src/H5VLnative.c
./src/H5VLnative.h
./src/H5VLnative_private.h
+./src/H5VLpassthru.c
+./src/H5VLpassthru.h
./src/H5VLpkg.h
./src/H5VLprivate.h
./src/H5VLpublic.h
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f1193b8..80b26ff 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -628,9 +628,11 @@ set (H5VL_SOURCES
${HDF5_SRC_DIR}/H5VLcallback.c
${HDF5_SRC_DIR}/H5VLint.c
${HDF5_SRC_DIR}/H5VLnative.c
+ ${HDF5_SRC_DIR}/H5VLpassthru.c
)
set (H5VL_HDRS
${HDF5_SRC_DIR}/H5VLnative.h
+ ${HDF5_SRC_DIR}/H5VLpassthru.h
${HDF5_SRC_DIR}/H5VLpublic.h
)
IDE_GENERATED_PROPERTIES ("H5VL" "${H5VL_HDRS}" "${H5VL_SOURCES}" )
diff --git a/src/H5VLpassthru.c b/src/H5VLpassthru.c
new file mode 100644
index 0000000..3181834
--- /dev/null
+++ b/src/H5VLpassthru.c
@@ -0,0 +1,3061 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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://support.hdfgroup.org/ftp/HDF5/releases. *
+ * If you do not have access to either file, you may request a copy from *
+ * help@hdfgroup.org. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Purpose: This is a "pass through" VOL connector, which forwards each
+ * VOL callback to an underlying connector.
+ *
+ * It is designed as an example VOL connector for developers to
+ * use when creating new connectors, especially connectors that
+ * are outside of the HDF5 library. As such, it should _NOT_
+ * include _any_ private HDF5 header files. This connector should
+ * therefore only make public HDF5 API calls and use standard C /
+ * POSIX calls.
+ */
+
+
+/* Header files needed */
+/* (Public HDF5 and standard C / POSIX only) */
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "hdf5.h"
+#include "H5VLpassthru.h"
+
+
+/**********/
+/* Macros */
+/**********/
+
+/* Whether to display log messge when callback is invoked */
+/* (Uncomment to enable) */
+/* #define ENABLE_LOGGING */
+
+
+/************/
+/* Typedefs */
+/************/
+
+/* The pass through VOL info object */
+typedef struct H5VL_pass_through_t {
+ hid_t under_vol_id; /* ID for underlying VOL connector */
+ void *under_object; /* Info object for underlying VOL connector */
+} H5VL_pass_through_t;
+
+/* The pass through VOL wrapper context */
+typedef struct H5VL_pass_through_wrap_ctx_t {
+ hid_t under_vol_id; /* VOL ID for under VOL */
+ void *under_wrap_ctx; /* Object wrapping context for under VOL */
+} H5VL_pass_through_wrap_ctx_t;
+
+
+/********************* */
+/* Function prototypes */
+/********************* */
+
+/* "Management" callbacks */
+static herr_t H5VL_pass_through_init(hid_t vipl_id);
+static herr_t H5VL_pass_through_term(void);
+static void *H5VL_pass_through_info_copy(const void *info);
+static herr_t H5VL_pass_through_info_cmp(int *cmp_value, const void *info1, const void *info2);
+static herr_t H5VL_pass_through_info_free(void *info);
+static herr_t H5VL_pass_through_info_to_str(const void *info, char **str);
+static herr_t H5VL_pass_through_str_to_info(const char *str, void **info);
+static void *H5VL_pass_through_get_object(const void *obj);
+static herr_t H5VL_pass_through_get_wrap_ctx(const void *obj, void **wrap_ctx);
+static herr_t H5VL_pass_through_free_wrap_ctx(void *obj);
+static void *H5VL_pass_through_wrap_object(void *obj, void *wrap_ctx);
+
+/* Attribute callbacks */
+static void *H5VL_pass_through_attr_create(void *obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t acpl_id, hid_t aapl_id, hid_t dxpl_id, void **req);
+static void *H5VL_pass_through_attr_open(void *obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t aapl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_attr_read(void *attr, hid_t mem_type_id, void *buf, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_attr_write(void *attr, hid_t mem_type_id, const void *buf, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_attr_get(void *obj, H5VL_attr_get_t get_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_attr_specific(void *obj, const H5VL_loc_params_t *loc_params, H5VL_attr_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_attr_optional(void *obj, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_attr_close(void *attr, hid_t dxpl_id, void **req);
+
+/* Dataset callbacks */
+static void *H5VL_pass_through_dataset_create(void *obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t dcpl_id, hid_t dapl_id, hid_t dxpl_id, void **req);
+static void *H5VL_pass_through_dataset_open(void *obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t dapl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_dataset_read(void *dset, hid_t mem_type_id, hid_t mem_space_id,
+ hid_t file_space_id, hid_t plist_id, void *buf, void **req);
+static herr_t H5VL_pass_through_dataset_write(void *dset, hid_t mem_type_id, hid_t mem_space_id, hid_t file_space_id, hid_t plist_id, const void *buf, void **req);
+static herr_t H5VL_pass_through_dataset_get(void *dset, H5VL_dataset_get_t get_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_dataset_specific(void *obj, H5VL_dataset_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_dataset_optional(void *obj, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_dataset_close(void *dset, hid_t dxpl_id, void **req);
+
+/* Datatype callbacks */
+static void *H5VL_pass_through_datatype_commit(void *obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t type_id, hid_t lcpl_id, hid_t tcpl_id, hid_t tapl_id, hid_t dxpl_id, void **req);
+static void *H5VL_pass_through_datatype_open(void *obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t tapl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_datatype_get(void *dt, H5VL_datatype_get_t get_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_datatype_specific(void *obj, H5VL_datatype_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_datatype_optional(void *obj, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_datatype_close(void *dt, hid_t dxpl_id, void **req);
+
+/* File callbacks */
+static void *H5VL_pass_through_file_create(const char *name, unsigned flags, hid_t fcpl_id, hid_t fapl_id, hid_t dxpl_id, void **req);
+static void *H5VL_pass_through_file_open(const char *name, unsigned flags, hid_t fapl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_file_get(void *file, H5VL_file_get_t get_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_file_specific(void *file, H5VL_file_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_file_optional(void *file, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_file_close(void *file, hid_t dxpl_id, void **req);
+
+/* Group callbacks */
+static void *H5VL_pass_through_group_create(void *obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t gcpl_id, hid_t gapl_id, hid_t dxpl_id, void **req);
+static void *H5VL_pass_through_group_open(void *obj, const H5VL_loc_params_t *loc_params, const char *name, hid_t gapl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_group_get(void *obj, H5VL_group_get_t get_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_group_specific(void *obj, H5VL_group_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_group_optional(void *obj, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_group_close(void *grp, hid_t dxpl_id, void **req);
+
+/* Link callbacks */
+static herr_t H5VL_pass_through_link_create(H5VL_link_create_type_t create_type, void *obj, const H5VL_loc_params_t *loc_params, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_link_copy(void *src_obj, const H5VL_loc_params_t *loc_params1, void *dst_obj, const H5VL_loc_params_t *loc_params2, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_link_move(void *src_obj, const H5VL_loc_params_t *loc_params1, void *dst_obj, const H5VL_loc_params_t *loc_params2, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_link_get(void *obj, const H5VL_loc_params_t *loc_params, H5VL_link_get_t get_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_link_specific(void *obj, const H5VL_loc_params_t *loc_params, H5VL_link_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_link_optional(void *obj, hid_t dxpl_id, void **req, va_list arguments);
+
+/* Object callbacks */
+static void *H5VL_pass_through_object_open(void *obj, const H5VL_loc_params_t *loc_params, H5I_type_t *opened_type, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_object_copy(void *src_obj, const H5VL_loc_params_t *src_loc_params, const char *src_name, void *dst_obj, const H5VL_loc_params_t *dst_loc_params, const char *dst_name, hid_t ocpypl_id, hid_t lcpl_id, hid_t dxpl_id, void **req);
+static herr_t H5VL_pass_through_object_get(void *obj, const H5VL_loc_params_t *loc_params, H5VL_object_get_t get_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_object_specific(void *obj, const H5VL_loc_params_t *loc_params, H5VL_object_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL_pass_through_object_optional(void *obj, hid_t dxpl_id, void **req, va_list arguments);
+
+/* Async request callbacks */
+static herr_t H5VL_pass_through_request_wait(void *req, uint64_t timeout, H5ES_status_t *status);
+static herr_t H5VL_pass_through_request_notify(void *obj, H5VL_request_notify_t cb, void *ctx);
+static herr_t H5VL_pass_through_request_cancel(void *req);
+static herr_t H5VL_pass_through_request_specific(void *req, H5VL_request_specific_t specific_type, va_list arguments);
+static herr_t H5VL_pass_through_request_optional(void *req, va_list arguments);
+static herr_t H5VL_pass_through_request_free(void *req);
+
+/*******************/
+/* Local variables */
+/*******************/
+
+/* Pass through VOL connector class struct */
+static const H5VL_class_t H5VL_pass_through_g = {
+ H5VL_PASSTHRU_VERSION, /* version */
+ (H5VL_class_value_t)H5VL_PASSTHRU_VALUE, /* value */
+ H5VL_PASSTHRU_NAME, /* name */
+ 0, /* capability flags */
+ H5VL_pass_through_init, /* initialize */
+ H5VL_pass_through_term, /* terminate */
+ sizeof(H5VL_pass_through_t), /* info size */
+ H5VL_pass_through_info_copy, /* info copy */
+ H5VL_pass_through_info_cmp, /* info compare */
+ H5VL_pass_through_info_free, /* info free */
+ H5VL_pass_through_info_to_str, /* info to str */
+ H5VL_pass_through_str_to_info, /* str to info */
+ H5VL_pass_through_get_object, /* get_object */
+ H5VL_pass_through_get_wrap_ctx, /* get_wrap_ctx */
+ H5VL_pass_through_wrap_object, /* wrap_object */
+ H5VL_pass_through_free_wrap_ctx, /* free_wrap_ctx */
+ { /* attribute_cls */
+ H5VL_pass_through_attr_create, /* create */
+ H5VL_pass_through_attr_open, /* open */
+ H5VL_pass_through_attr_read, /* read */
+ H5VL_pass_through_attr_write, /* write */
+ H5VL_pass_through_attr_get, /* get */
+ H5VL_pass_through_attr_specific, /* specific */
+ H5VL_pass_through_attr_optional, /* optional */
+ H5VL_pass_through_attr_close /* close */
+ },
+ { /* dataset_cls */
+ H5VL_pass_through_dataset_create, /* create */
+ H5VL_pass_through_dataset_open, /* open */
+ H5VL_pass_through_dataset_read, /* read */
+ H5VL_pass_through_dataset_write, /* write */
+ H5VL_pass_through_dataset_get, /* get */
+ H5VL_pass_through_dataset_specific, /* specific */
+ H5VL_pass_through_dataset_optional, /* optional */
+ H5VL_pass_through_dataset_close /* close */
+ },
+ { /* datatype_cls */
+ H5VL_pass_through_datatype_commit, /* commit */
+ H5VL_pass_through_datatype_open, /* open */
+ H5VL_pass_through_datatype_get, /* get_size */
+ H5VL_pass_through_datatype_specific, /* specific */
+ H5VL_pass_through_datatype_optional, /* optional */
+ H5VL_pass_through_datatype_close /* close */
+ },
+ { /* file_cls */
+ H5VL_pass_through_file_create, /* create */
+ H5VL_pass_through_file_open, /* open */
+ H5VL_pass_through_file_get, /* get */
+ H5VL_pass_through_file_specific, /* specific */
+ H5VL_pass_through_file_optional, /* optional */
+ H5VL_pass_through_file_close /* close */
+ },
+ { /* group_cls */
+ H5VL_pass_through_group_create, /* create */
+ H5VL_pass_through_group_open, /* open */
+ H5VL_pass_through_group_get, /* get */
+ H5VL_pass_through_group_specific, /* specific */
+ H5VL_pass_through_group_optional, /* optional */
+ H5VL_pass_through_group_close /* close */
+ },
+ { /* link_cls */
+ H5VL_pass_through_link_create, /* create */
+ H5VL_pass_through_link_copy, /* copy */
+ H5VL_pass_through_link_move, /* move */
+ H5VL_pass_through_link_get, /* get */
+ H5VL_pass_through_link_specific, /* specific */
+ H5VL_pass_through_link_optional, /* optional */
+ },
+ { /* object_cls */
+ H5VL_pass_through_object_open, /* open */
+ H5VL_pass_through_object_copy, /* copy */
+ H5VL_pass_through_object_get, /* get */
+ H5VL_pass_through_object_specific, /* specific */
+ H5VL_pass_through_object_optional, /* optional */
+ },
+ { /* request_cls */
+ H5VL_pass_through_request_wait, /* wait */
+ H5VL_pass_through_request_notify, /* notify */
+ H5VL_pass_through_request_cancel, /* cancel */
+ H5VL_pass_through_request_specific, /* specific */
+ H5VL_pass_through_request_optional, /* optional */
+ H5VL_pass_through_request_free /* free */
+ },
+ NULL /* optional */
+};
+
+/* The connector identification number, initialized at runtime */
+static hid_t H5VL_PASSTHRU_g = 0;
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_register
+ *
+ * Purpose: Register the pass-through VOL connector and retrieve an ID
+ * for it.
+ *
+ * Return: Success: The ID for the pass-through VOL connector
+ * Failure: -1
+ *
+ * Programmer: Quincey Koziol
+ * Wednesday, November 28, 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5VL_pass_through_register(void)
+{
+ /* Clear the error stack */
+ H5Eclear2(H5E_DEFAULT);
+
+ /* Singleton register the pass-through VOL connector ID */
+ if(H5I_VOL != H5Iget_type(H5VL_PASSTHRU_g))
+ H5VL_PASSTHRU_g = H5VLregister_connector(&H5VL_pass_through_g, H5P_DEFAULT);
+
+ return(H5VL_PASSTHRU_g);
+} /* end H5VL_pass_through_register() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_init
+ *
+ * Purpose: Initialize this VOL connector, performing any necessary
+ * operations for the connector that will apply to all containers
+ * accessed with the connector.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_init(hid_t vipl_id)
+{
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL INIT\n");
+#endif
+
+ /* Shut compiler up about unused parameter */
+ vipl_id = vipl_id;
+
+ return(0);
+} /* end H5VL_pass_through_init() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_term
+ *
+ * Purpose: Terminate this VOL connector, performing any necessary
+ * operations for the connector that release connector-wide
+ * resources (usually created / initialized with the 'init'
+ * callback).
+ *
+ * Return: Success: 0
+ * Failure: (Can't fail)
+ *
+ *---------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_term(void)
+{
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL TERM\n");
+#endif
+
+ /* Reset VOL ID */
+ H5VL_PASSTHRU_g = 0;
+
+ return(0);
+} /* end H5VL_pass_through_term() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_info_copy
+ *
+ * Purpose: Duplicate the connector's info object.
+ *
+ * Returns: Success: New connector info object
+ * Failure: NULL
+ *
+ *---------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_info_copy(const void *_info)
+{
+ const H5VL_pass_through_info_t *info = (const H5VL_pass_through_info_t *)_info;
+ H5VL_pass_through_info_t *new_info;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL INFO Copy\n");
+#endif
+
+ /* Allocate new VOL info struct for the pass through connector */
+ new_info = (H5VL_pass_through_info_t *)calloc(1, sizeof(H5VL_pass_through_info_t));
+
+ /* Increment reference count on underlying VOL ID, and copy the VOL info */
+ new_info->under_vol_id = info->under_vol_id;
+ H5Iinc_ref(new_info->under_vol_id);
+ if(info->under_vol_info)
+ H5VLcopy_connector_info(new_info->under_vol_id, &(new_info->under_vol_info), info->under_vol_info);
+
+ return(new_info);
+} /* end H5VL_pass_through_info_copy() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_info_cmp
+ *
+ * Purpose: Compare two of the connector's info objects, setting *cmp_value,
+ * following the same rules as strcmp().
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *---------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_info_cmp(int *cmp_value, const void *_info1, const void *_info2)
+{
+ const H5VL_pass_through_info_t *info1 = (const H5VL_pass_through_info_t *)_info1;
+ const H5VL_pass_through_info_t *info2 = (const H5VL_pass_through_info_t *)_info2;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL INFO Compare\n");
+#endif
+
+ /* Sanity checks */
+ assert(info1);
+ assert(info2);
+
+ /* Initialize comparison value */
+ *cmp_value = 0;
+
+ /* Compare under VOL connector classes */
+ H5VLcmp_connector_cls(cmp_value, info1->under_vol_id, info2->under_vol_id);
+ if(*cmp_value != 0)
+ return(0);
+
+ /* Compare under VOL connector info objects */
+ H5VLcmp_connector_info(cmp_value, info1->under_vol_id, info1->under_vol_info, info2->under_vol_info);
+ if(*cmp_value != 0)
+ return(0);
+
+ return(0);
+} /* end H5VL_pass_through_info_cmp() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_info_free
+ *
+ * Purpose: Release an info object for the connector.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *---------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_info_free(void *_info)
+{
+ H5VL_pass_through_info_t *info = (H5VL_pass_through_info_t *)_info;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL INFO Free\n");
+#endif
+
+ /* Release underlying VOL ID and info */
+ if(info->under_vol_info)
+ H5VLfree_connector_info(info->under_vol_id, info->under_vol_info);
+ H5Idec_ref(info->under_vol_id);
+
+ /* Free pass through info object itself */
+ free(info);
+
+ return(0);
+} /* end H5VL_pass_through_info_free() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_info_to_str
+ *
+ * Purpose: Serialize an info object for this connector into a string
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *---------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_info_to_str(const void *_info, char **str)
+{
+ const H5VL_pass_through_info_t *info = (const H5VL_pass_through_info_t *)_info;
+ H5VL_class_value_t under_value = (H5VL_class_value_t)-1;
+ char *under_vol_string = NULL;
+ size_t under_vol_str_len = 0;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL INFO To String\n");
+#endif
+
+ /* Get value and string for underlying VOL connector */
+ H5VLget_value(info->under_vol_id, &under_value);
+ H5VLconnector_info_to_str(info->under_vol_info, info->under_vol_id, &under_vol_string);
+
+ /* Determine length of underlying VOL info string */
+ if(under_vol_string)
+ under_vol_str_len = strlen(under_vol_string);
+
+ /* Allocate space for our info */
+ *str = (char *)H5allocate_memory(32 + under_vol_str_len, (hbool_t)0);
+ assert(*str);
+
+ /* Encode our info */
+ snprintf(*str, 32 + under_vol_str_len, "under_val=%u, under_info={%s}", (unsigned)under_value, (under_vol_string ? under_vol_string : ""));
+
+ return(0);
+} /* end H5VL_pass_through_info_to_str() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_str_to_info
+ *
+ * Purpose: Deserialize a string into an info object for this connector.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *---------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_str_to_info(const char *str, void **_info)
+{
+ H5VL_pass_through_info_t *info;
+ unsigned under_vol_value;
+ const char *under_vol_info_start, *under_vol_info_end;
+ hid_t under_vol_id;
+ void *under_vol_info = NULL;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL INFO String To Info\n");
+#endif
+
+ /* Retrieve the underlying VOL connector value and info */
+ sscanf(str, "under_vol=%u,", &under_vol_value);
+ under_vol_id = H5VLregister_connector_by_value((H5VL_class_value_t)under_vol_value, H5P_DEFAULT);
+ under_vol_info_start = strchr(str, '{');
+ under_vol_info_end = strrchr(str, '}');
+ assert(under_vol_info_end > under_vol_info_start);
+ if(under_vol_info_end != (under_vol_info_start + 1)) {
+ char *under_vol_info_str;
+
+ under_vol_info_str = (char *)malloc((size_t)(under_vol_info_end - under_vol_info_start));
+ memcpy(under_vol_info_str, under_vol_info_start + 1, (size_t)((under_vol_info_end - under_vol_info_start) - 1));
+ *(under_vol_info_str + (under_vol_info_end - under_vol_info_start)) = '\0';
+
+ H5VLconnector_str_to_info(under_vol_info_str, under_vol_id, &under_vol_info);
+
+ free(under_vol_info_str);
+ } /* end else */
+
+ /* Allocate new pass-through VOL connector info and set its fields */
+ info = (H5VL_pass_through_info_t *)calloc(1, sizeof(H5VL_pass_through_info_t));
+ info->under_vol_id = under_vol_id;
+ info->under_vol_info = under_vol_info;
+
+ /* Set return value */
+ *_info = info;
+
+ return(0);
+} /* end H5VL_pass_through_str_to_info() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_get_object
+ *
+ * Purpose: Retrieve the 'data' for a VOL object.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *---------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_get_object(const void *obj)
+{
+ const H5VL_pass_through_t *o = (const H5VL_pass_through_t *)obj;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL Get object\n");
+#endif
+
+ return(H5VLget_object(o->under_object, o->under_vol_id));
+} /* end H5VL_pass_through_get_object() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_get_wrap_ctx
+ *
+ * Purpose: Retrieve a "wrapper context" for an object
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *---------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_get_wrap_ctx(const void *obj, void **wrap_ctx)
+{
+ const H5VL_pass_through_t *o = (const H5VL_pass_through_t *)obj;
+ H5VL_pass_through_wrap_ctx_t *new_wrap_ctx;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL WRAP CTX Get\n");
+#endif
+
+ /* Allocate new VOL object wrapping context for the pass through connector */
+ new_wrap_ctx = (H5VL_pass_through_wrap_ctx_t *)calloc(1, sizeof(H5VL_pass_through_wrap_ctx_t));
+
+ /* Increment reference count on underlying VOL ID, and copy the VOL info */
+ new_wrap_ctx->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(new_wrap_ctx->under_vol_id);
+ H5VLget_wrap_ctx(o->under_object, o->under_vol_id, &new_wrap_ctx->under_wrap_ctx);
+
+ /* Set wrap context to return */
+ *wrap_ctx = new_wrap_ctx;
+
+ return(0);
+} /* end H5VL_pass_through_get_wrap_ctx() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_wrap_object
+ *
+ * Purpose: Use a "wrapper context" to wrap a data object
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *---------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_wrap_object(void *obj, void *_wrap_ctx)
+{
+ H5VL_pass_through_wrap_ctx_t *wrap_ctx = (H5VL_pass_through_wrap_ctx_t *)_wrap_ctx;
+ H5VL_pass_through_t *new_obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL WRAP Object\n");
+#endif
+
+ /* Wrap the object with the underlying VOL */
+ under = H5VLwrap_object(obj, wrap_ctx->under_vol_id, wrap_ctx->under_wrap_ctx);
+ if(under) {
+ new_obj = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ new_obj->under_object = under;
+ new_obj->under_vol_id = wrap_ctx->under_vol_id;
+ H5Iinc_ref(new_obj->under_vol_id);
+ } /* end if */
+ else
+ new_obj = NULL;
+
+ return(new_obj);
+} /* end H5VL_pass_through_wrap_object() */
+
+
+/*---------------------------------------------------------------------------
+ * Function: H5VL_pass_through_free_wrap_ctx
+ *
+ * Purpose: Release a "wrapper context" for an object
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *---------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_free_wrap_ctx(void *_wrap_ctx)
+{
+ H5VL_pass_through_wrap_ctx_t *wrap_ctx = (H5VL_pass_through_wrap_ctx_t *)_wrap_ctx;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL WRAP CTX Free\n");
+#endif
+
+ /* Release underlying VOL ID and wrap context */
+ if(wrap_ctx->under_wrap_ctx)
+ H5VLfree_wrap_ctx(wrap_ctx->under_wrap_ctx, wrap_ctx->under_vol_id);
+ H5Idec_ref(wrap_ctx->under_vol_id);
+
+ /* Free pass through wrap context object itself */
+ free(wrap_ctx);
+
+ return(0);
+} /* end H5VL_pass_through_free_wrap_ctx() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_attr_create
+ *
+ * Purpose: Creates an attribute on an object.
+ *
+ * Return: Success: Pointer to attribute object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_attr_create(void *obj, const H5VL_loc_params_t *loc_params,
+ const char *name, hid_t acpl_id, hid_t aapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *attr;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL ATTRIBUTE Create\n");
+#endif
+
+ under = H5VLattr_create(o->under_object, loc_params, o->under_vol_id, name, acpl_id, aapl_id, dxpl_id, req);
+ if(under) {
+ attr = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ attr->under_object = under;
+ attr->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(attr->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ attr = NULL;
+
+ return((void*)attr);
+} /* end H5VL_pass_through_attr_create() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_attr_open
+ *
+ * Purpose: Opens an attribute on an object.
+ *
+ * Return: Success: Pointer to attribute object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_attr_open(void *obj, const H5VL_loc_params_t *loc_params,
+ const char *name, hid_t aapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *attr;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL ATTRIBUTE Open\n");
+#endif
+
+ under = H5VLattr_open(o->under_object, loc_params, o->under_vol_id, name, aapl_id, dxpl_id, req);
+ if(under) {
+ attr = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ attr->under_object = under;
+ attr->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(attr->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ attr = NULL;
+
+ return((void *)attr);
+} /* end H5VL_pass_through_attr_open() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_attr_read
+ *
+ * Purpose: Reads data from attribute.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_attr_read(void *attr, hid_t mem_type_id, void *buf,
+ hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)attr;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL ATTRIBUTE Read\n");
+#endif
+
+ ret_value = H5VLattr_read(o->under_object, o->under_vol_id, mem_type_id, buf, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_attr_read() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_attr_write
+ *
+ * Purpose: Writes data to attribute.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_attr_write(void *attr, hid_t mem_type_id, const void *buf,
+ hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)attr;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL ATTRIBUTE Write\n");
+#endif
+
+ ret_value = H5VLattr_write(o->under_object, o->under_vol_id, mem_type_id, buf, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_attr_write() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_attr_get
+ *
+ * Purpose: Gets information about an attribute
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_attr_get(void *obj, H5VL_attr_get_t get_type, hid_t dxpl_id,
+ void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL ATTRIBUTE Get\n");
+#endif
+
+ ret_value = H5VLattr_get(o->under_object, o->under_vol_id, get_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_attr_get() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_attr_specific
+ *
+ * Purpose: Specific operation on attribute
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_attr_specific(void *obj, const H5VL_loc_params_t *loc_params,
+ H5VL_attr_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL ATTRIBUTE Specific\n");
+#endif
+
+ ret_value = H5VLattr_specific(o->under_object, loc_params, o->under_vol_id, specific_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return ret_value;
+} /* end H5VL_pass_through_attr_specific() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_attr_optional
+ *
+ * Purpose: Perform a connector-specific operation on an attribute
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_attr_optional(void *obj, hid_t dxpl_id, void **req,
+ va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL ATTRIBUTE Optional\n");
+#endif
+
+ ret_value = H5VLattr_optional(o->under_object, o->under_vol_id, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return ret_value;
+} /* end H5VL_pass_through_attr_optional() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_attr_close
+ *
+ * Purpose: Closes an attribute.
+ *
+ * Return: Success: 0
+ * Failure: -1, attr not closed.
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_attr_close(void *attr, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)attr;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL ATTRIBUTE Close\n");
+#endif
+
+ ret_value = H5VLattr_close(o->under_object, o->under_vol_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ /* Release our wrapper, if underlying attribute was closed */
+ if(ret_value >= 0) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_attr_close() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_dataset_create
+ *
+ * Purpose: Creates a dataset in a container
+ *
+ * Return: Success: Pointer to a dataset object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_dataset_create(void *obj, const H5VL_loc_params_t *loc_params,
+ const char *name, hid_t dcpl_id, hid_t dapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *dset;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATASET Create\n");
+#endif
+
+ under = H5VLdataset_create(o->under_object, loc_params, o->under_vol_id, name, dcpl_id, dapl_id, dxpl_id, req);
+ if(under) {
+ dset = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ dset->under_object = under;
+ dset->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(dset->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ dset = NULL;
+
+ return((void *)dset);
+} /* end H5VL_pass_through_dataset_create() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_dataset_open
+ *
+ * Purpose: Opens a dataset in a container
+ *
+ * Return: Success: Pointer to a dataset object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_dataset_open(void *obj, const H5VL_loc_params_t *loc_params,
+ const char *name, hid_t dapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *dset;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATASET Open\n");
+#endif
+
+ under = H5VLdataset_open(o->under_object, loc_params, o->under_vol_id, name, dapl_id, dxpl_id, req);
+ if(under) {
+ dset = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ dset->under_object = under;
+ dset->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(dset->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ dset = NULL;
+
+ return((void *)dset);
+} /* end H5VL_pass_through_dataset_open() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_dataset_read
+ *
+ * Purpose: Reads data elements from a dataset into a buffer.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_dataset_read(void *dset, hid_t mem_type_id, hid_t mem_space_id,
+ hid_t file_space_id, hid_t plist_id, void *buf, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)dset;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATASET Read\n");
+#endif
+
+ ret_value = H5VLdataset_read(o->under_object, o->under_vol_id, mem_type_id, mem_space_id, file_space_id, plist_id, buf, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_dataset_read() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_dataset_write
+ *
+ * Purpose: Writes data elements from a buffer into a dataset.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_dataset_write(void *dset, hid_t mem_type_id, hid_t mem_space_id,
+ hid_t file_space_id, hid_t plist_id, const void *buf, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)dset;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATASET Write\n");
+#endif
+
+ ret_value = H5VLdataset_write(o->under_object, o->under_vol_id, mem_type_id, mem_space_id, file_space_id, plist_id, buf, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return ret_value;
+} /* end H5VL_pass_through_dataset_write() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_dataset_get
+ *
+ * Purpose: Gets information about a dataset
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_dataset_get(void *dset, H5VL_dataset_get_t get_type,
+ hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)dset;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATASET Get\n");
+#endif
+
+ ret_value = H5VLdataset_get(o->under_object, o->under_vol_id, get_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return ret_value;
+} /* end H5VL_pass_through_dataset_get() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_dataset_specific
+ *
+ * Purpose: Specific operation on a dataset
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_dataset_specific(void *obj, H5VL_dataset_specific_t specific_type,
+ hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL H5Dspecific\n");
+#endif
+
+ ret_value = H5VLdataset_specific(o->under_object, o->under_vol_id, specific_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ }
+
+ return ret_value;
+} /* end H5VL_pass_through_dataset_specific() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_dataset_optional
+ *
+ * Purpose: Perform a connector-specific operation on a dataset
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_dataset_optional(void *obj, hid_t dxpl_id, void **req,
+ va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATASET Optional\n");
+#endif
+
+ ret_value = H5VLdataset_optional(o->under_object, o->under_vol_id, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ }
+
+ return(ret_value);
+} /* end H5VL_pass_through_dataset_optional() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_dataset_close
+ *
+ * Purpose: Closes a dataset.
+ *
+ * Return: Success: 0
+ * Failure: -1, dataset not closed.
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_dataset_close(void *dset, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)dset;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATASET Close\n");
+#endif
+
+ ret_value = H5VLdataset_close(o->under_object, o->under_vol_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ }
+
+ /* Release our wrapper, if underlying dataset was closed */
+ if(ret_value >= 0) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_dataset_close() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_datatype_commit
+ *
+ * Purpose: Commits a datatype inside a container.
+ *
+ * Return: Success: Pointer to datatype object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_datatype_commit(void *obj, const H5VL_loc_params_t *loc_params,
+ const char *name, hid_t type_id, hid_t lcpl_id, hid_t tcpl_id, hid_t tapl_id,
+ hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *dt;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATATYPE Commit\n");
+#endif
+
+ under = H5VLdatatype_commit(o->under_object, loc_params, o->under_vol_id, name, type_id, lcpl_id, tcpl_id, tapl_id, dxpl_id, req);
+ if(under) {
+ dt = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ dt->under_object = under;
+ dt->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(dt->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ dt = NULL;
+
+ return((void *)dt);
+} /* end H5VL_pass_through_datatype_commit() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_datatype_open
+ *
+ * Purpose: Opens a named datatype inside a container.
+ *
+ * Return: Success: Pointer to datatype object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_datatype_open(void *obj, const H5VL_loc_params_t *loc_params,
+ const char *name, hid_t tapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *dt;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATATYPE Open\n");
+#endif
+
+ under = H5VLdatatype_open(o->under_object, loc_params, o->under_vol_id, name, tapl_id, dxpl_id, req);
+ if(under) {
+ dt = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ dt->under_object = under;
+ dt->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(dt->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ dt = NULL;
+
+ return((void *)dt);
+} /* end H5VL_pass_through_datatype_open() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_datatype_get
+ *
+ * Purpose: Get information about a datatype
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_datatype_get(void *dt, H5VL_datatype_get_t get_type,
+ hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)dt;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATATYPE Get\n");
+#endif
+
+ ret_value = H5VLdatatype_get(o->under_object, o->under_vol_id, get_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ }
+
+ return(ret_value);
+} /* end H5VL_pass_through_datatype_get() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_datatype_specific
+ *
+ * Purpose: Specific operations for datatypes
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_datatype_specific(void *obj, H5VL_datatype_specific_t specific_type,
+ hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATATYPE Specific\n");
+#endif
+
+ ret_value = H5VLdatatype_specific(o->under_object, o->under_vol_id, specific_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ }
+
+ return(ret_value);
+} /* end H5VL_pass_through_datatype_specific() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_datatype_optional
+ *
+ * Purpose: Perform a connector-specific operation on a datatype
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_datatype_optional(void *obj, hid_t dxpl_id, void **req,
+ va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATATYPE Optional\n");
+#endif
+
+ ret_value = H5VLdatatype_optional(o->under_object, o->under_vol_id, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ }
+
+ return(ret_value);
+} /* end H5VL_pass_through_datatype_optional() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_datatype_close
+ *
+ * Purpose: Closes a datatype.
+ *
+ * Return: Success: 0
+ * Failure: -1, datatype not closed.
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_datatype_close(void *dt, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)dt;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL DATATYPE Close\n");
+#endif
+
+ assert(o->under_object);
+
+ ret_value = H5VLdatatype_close(o->under_object, o->under_vol_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ }
+
+ /* Release our wrapper, if underlying datatype was closed */
+ if(ret_value >= 0) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_datatype_close() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_file_create
+ *
+ * Purpose: Creates a container using this connector
+ *
+ * Return: Success: Pointer to a file object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_file_create(const char *name, unsigned flags, hid_t fcpl_id,
+ hid_t fapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_info_t *info;
+ H5VL_pass_through_t *file;
+ hid_t under_fapl_id;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL FILE Create\n");
+#endif
+
+ /* Get copy of our VOL info from FAPL */
+ H5Pget_vol_info(fapl_id, (void **)&info);
+
+ /* Copy the FAPL */
+ under_fapl_id = H5Pcopy(fapl_id);
+
+ /* Set the VOL ID and info for the underlying FAPL */
+ H5Pset_vol(under_fapl_id, info->under_vol_id, info->under_vol_info);
+
+ /* Open the file with the underlying VOL connector */
+ under = H5VLfile_create(name, flags, fcpl_id, under_fapl_id, dxpl_id, req);
+ if(under) {
+ file = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ file->under_object = under;
+ file->under_vol_id = info->under_vol_id;
+ H5Iinc_ref(file->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = info->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ file = NULL;
+
+ /* Close underlying FAPL */
+ H5Pclose(under_fapl_id);
+
+ /* Release copy of our VOL info */
+ H5VL_pass_through_info_free(info);
+
+ return((void *)file);
+} /* end H5VL_pass_through_file_create() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_file_open
+ *
+ * Purpose: Opens a container created with this connector
+ *
+ * Return: Success: Pointer to a file object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_file_open(const char *name, unsigned flags, hid_t fapl_id,
+ hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_info_t *info;
+ H5VL_pass_through_t *file;
+ hid_t under_fapl_id;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL FILE Open\n");
+#endif
+
+ /* Get copy of our VOL info from FAPL */
+ H5Pget_vol_info(fapl_id, (void **)&info);
+
+ /* Copy the FAPL */
+ under_fapl_id = H5Pcopy(fapl_id);
+
+ /* Set the VOL ID and info for the underlying FAPL */
+ H5Pset_vol(under_fapl_id, info->under_vol_id, info->under_vol_info);
+
+ /* Open the file with the underlying VOL connector */
+ under = H5VLfile_open(name, flags, under_fapl_id, dxpl_id, req);
+ if(under) {
+ file = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ file->under_object = under;
+ file->under_vol_id = info->under_vol_id;
+ H5Iinc_ref(file->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = info->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ file = NULL;
+
+ /* Close underlying FAPL */
+ H5Pclose(under_fapl_id);
+
+ /* Release copy of our VOL info */
+ H5VL_pass_through_info_free(info);
+
+ return((void *)file);
+} /* end H5VL_pass_through_file_open() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_file_get
+ *
+ * Purpose: Get info about a file
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_file_get(void *file, H5VL_file_get_t get_type, hid_t dxpl_id,
+ void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)file;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL FILE Get\n");
+#endif
+
+ ret_value = H5VLfile_get(o->under_object, o->under_vol_id, get_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_file_get() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_file_specific_reissue
+ *
+ * Purpose: Re-wrap vararg arguments into a va_list and reissue the
+ * file specific callback to the underlying VOL connector.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_file_specific_reissue(void *obj, hid_t connector_id,
+ H5VL_file_specific_t specific_type, hid_t dxpl_id, void **req, ...)
+{
+ va_list arguments;
+ herr_t ret_value;
+
+ va_start(arguments, req);
+ ret_value = H5VLfile_specific(obj, connector_id, specific_type, dxpl_id, req, arguments);
+ va_end(arguments);
+
+ return(ret_value);
+} /* end H5VL_pass_through_file_specific_reissue() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_file_specific
+ *
+ * Purpose: Specific operation on file
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_file_specific(void *file, H5VL_file_specific_t specific_type,
+ hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)file;
+ hid_t under_vol_id = -1;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL FILE Specific\n");
+#endif
+
+ /* Unpack arguments to get at the child file pointer when mounting a file */
+ if(specific_type == H5VL_FILE_MOUNT) {
+ H5I_type_t loc_type;
+ const char *name;
+ H5VL_pass_through_t *child_file;
+ hid_t plist_id;
+
+ /* Retrieve parameters for 'mount' operation, so we can unwrap the child file */
+ loc_type = va_arg(arguments, H5I_type_t);
+ name = va_arg(arguments, const char *);
+ child_file = (H5VL_pass_through_t *)va_arg(arguments, void *);
+ plist_id = va_arg(arguments, hid_t);
+
+ /* Keep the correct underlying VOL ID for possible async request token */
+ under_vol_id = o->under_vol_id;
+
+ /* Re-issue 'file specific' call, using the unwrapped pieces */
+ ret_value = H5VL_pass_through_file_specific_reissue(o->under_object, o->under_vol_id, specific_type, dxpl_id, req, loc_type, name, child_file->under_object, plist_id);
+ } /* end if */
+ else if(specific_type == H5VL_FILE_IS_ACCESSIBLE) {
+ H5VL_pass_through_info_t *info;
+ hid_t fapl_id, under_fapl_id;
+ const char *name;
+ htri_t *ret;
+
+ /* Get the arguments for the 'is accessible' check */
+ fapl_id = va_arg(arguments, hid_t);
+ name = va_arg(arguments, const char *);
+ ret = va_arg(arguments, htri_t *);
+
+ /* Get copy of our VOL info from FAPL */
+ H5Pget_vol_info(fapl_id, (void **)&info);
+
+ /* Copy the FAPL */
+ under_fapl_id = H5Pcopy(fapl_id);
+
+ /* Set the VOL ID and info for the underlying FAPL */
+ H5Pset_vol(under_fapl_id, info->under_vol_id, info->under_vol_info);
+
+ /* Keep the correct underlying VOL ID for possible async request token */
+ under_vol_id = info->under_vol_id;
+
+ /* Re-issue 'file specific' call */
+ ret_value = H5VL_pass_through_file_specific_reissue(NULL, info->under_vol_id, specific_type, dxpl_id, req, under_fapl_id, name, ret);
+
+ /* Close underlying FAPL */
+ H5Pclose(under_fapl_id);
+
+ /* Release copy of our VOL info */
+ H5VL_pass_through_info_free(info);
+ } /* end else-if */
+ else {
+ va_list my_arguments;
+
+ /* Make a copy of the argument list for later, if reopening */
+ if(specific_type == H5VL_FILE_REOPEN)
+ va_copy(my_arguments, arguments);
+
+ /* Keep the correct underlying VOL ID for possible async request token */
+ under_vol_id = o->under_vol_id;
+
+ ret_value = H5VLfile_specific(o->under_object, o->under_vol_id, specific_type, dxpl_id, req, arguments);
+
+ /* Wrap file struct pointer, if we reopened one */
+ if(specific_type == H5VL_FILE_REOPEN) {
+ if(ret_value >= 0) {
+ void **ret = va_arg(my_arguments, void **);
+
+ if(ret && *ret) {
+ H5VL_pass_through_t *new_file;
+
+ new_file = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ new_file->under_object = *ret;
+ new_file->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(new_file->under_vol_id);
+
+ *ret = new_file;
+ } /* end if */
+ } /* end if */
+
+ /* Finish use of copied vararg list */
+ va_end(my_arguments);
+ } /* end if */
+ } /* end else */
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ assert(under_vol_id);
+ r->under_vol_id = under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_file_specific() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_file_optional
+ *
+ * Purpose: Perform a connector-specific operation on a file
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_file_optional(void *file, hid_t dxpl_id, void **req,
+ va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)file;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL File Optional\n");
+#endif
+
+ ret_value = H5VLfile_optional(o->under_object, o->under_vol_id, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_file_optional() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_file_close
+ *
+ * Purpose: Closes a file.
+ *
+ * Return: Success: 0
+ * Failure: -1, file not closed.
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_file_close(void *file, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)file;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL FILE Close\n");
+#endif
+
+ ret_value = H5VLfile_close(o->under_object, o->under_vol_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ /* Release our wrapper, if underlying file was closed */
+ if(ret_value >= 0) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_file_close() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_group_create
+ *
+ * Purpose: Creates a group inside a container
+ *
+ * Return: Success: Pointer to a group object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_group_create(void *obj, const H5VL_loc_params_t *loc_params,
+ const char *name, hid_t gcpl_id, hid_t gapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *group;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL GROUP Create\n");
+#endif
+
+ under = H5VLgroup_create(o->under_object, loc_params, o->under_vol_id, name, gcpl_id, gapl_id, dxpl_id, req);
+ if(under) {
+ group = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ group->under_object = under;
+ group->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(group->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ group = NULL;
+
+ return((void *)group);
+} /* end H5VL_pass_through_group_create() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_group_open
+ *
+ * Purpose: Opens a group inside a container
+ *
+ * Return: Success: Pointer to a group object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_group_open(void *obj, const H5VL_loc_params_t *loc_params,
+ const char *name, hid_t gapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *group;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL GROUP Open\n");
+#endif
+
+ under = H5VLgroup_open(o->under_object, loc_params, o->under_vol_id, name, gapl_id, dxpl_id, req);
+ if(under) {
+ group = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ group->under_object = under;
+ group->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(group->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ group = NULL;
+
+ return((void *)group);
+} /* end H5VL_pass_through_group_open() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_group_get
+ *
+ * Purpose: Get info about a group
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_group_get(void *obj, H5VL_group_get_t get_type, hid_t dxpl_id,
+ void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL GROUP Get\n");
+#endif
+
+ ret_value = H5VLgroup_get(o->under_object, o->under_vol_id, get_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_group_get() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_group_specific
+ *
+ * Purpose: Specific operation on a group
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_group_specific(void *obj, H5VL_group_specific_t specific_type,
+ hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL GROUP Specific\n");
+#endif
+
+ ret_value = H5VLgroup_specific(o->under_object, o->under_vol_id, specific_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_group_specific() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_group_optional
+ *
+ * Purpose: Perform a connector-specific operation on a group
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_group_optional(void *obj, hid_t dxpl_id, void **req,
+ va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL GROUP Optional\n");
+#endif
+
+ ret_value = H5VLgroup_optional(o->under_object, o->under_vol_id, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_group_optional() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_group_close
+ *
+ * Purpose: Closes a group.
+ *
+ * Return: Success: 0
+ * Failure: -1, group not closed.
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_group_close(void *grp, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)grp;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL H5Gclose\n");
+#endif
+
+ ret_value = H5VLgroup_close(o->under_object, o->under_vol_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ /* Release our wrapper, if underlying file was closed */
+ if(ret_value >= 0) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_group_close() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_link_create
+ *
+ * Purpose: Creates a hard / soft / UD / external link.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_link_create(H5VL_link_create_type_t create_type, void *obj, const H5VL_loc_params_t *loc_params, hid_t lcpl_id, hid_t lapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ hid_t under_vol_id = -1;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL LINK Create\n");
+#endif
+
+ /* Try to retrieve the "under" VOL id */
+ if(o)
+ under_vol_id = o->under_vol_id;
+
+ /* Fix up the link target object for hard link creation */
+ if(H5VL_LINK_CREATE_HARD == create_type) {
+ void *cur_obj;
+
+ /* Retrieve the object for the link target */
+ H5Pget(lcpl_id, H5VL_PROP_LINK_TARGET, &cur_obj);
+
+ /* If it's a non-NULL pointer, find the 'under object' and re-set the property */
+ if(cur_obj) {
+ /* Check if we still need the "under" VOL ID */
+ if(under_vol_id < 0)
+ under_vol_id = ((H5VL_pass_through_t *)cur_obj)->under_vol_id;
+
+ /* Set the object for the link target */
+ H5Pset(lcpl_id, H5VL_PROP_LINK_TARGET, &(((H5VL_pass_through_t *)cur_obj)->under_object));
+ } /* end if */
+ } /* end if */
+
+ ret_value = H5VLlink_create(create_type, (o ? o->under_object : NULL), loc_params, under_vol_id, lcpl_id, lapl_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_link_create() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_link_copy
+ *
+ * Purpose: Renames an object within an HDF5 container and copies it to a new
+ * group. The original name SRC is unlinked from the group graph
+ * and then inserted with the new name DST (which can specify a
+ * new path for the object) as an atomic operation. The names
+ * are interpreted relative to SRC_LOC_ID and
+ * DST_LOC_ID, which are either file IDs or group ID.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_link_copy(void *src_obj, const H5VL_loc_params_t *loc_params1,
+ void *dst_obj, const H5VL_loc_params_t *loc_params2, hid_t lcpl_id,
+ hid_t lapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o_src = (H5VL_pass_through_t *)src_obj;
+ H5VL_pass_through_t *o_dst = (H5VL_pass_through_t *)dst_obj;
+ hid_t under_vol_id = -1;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL LINK Copy\n");
+#endif
+
+ /* Retrieve the "under" VOL id */
+ if(o_src)
+ under_vol_id = o_src->under_vol_id;
+ else if(o_dst)
+ under_vol_id = o_dst->under_vol_id;
+ assert(under_vol_id > 0);
+
+ ret_value = H5VLlink_copy((o_src ? o_src->under_object : NULL), loc_params1, (o_dst ? o_dst->under_object : NULL), loc_params2, under_vol_id, lcpl_id, lapl_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_link_copy() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:
+H5VL_pass_through_link_move(void *src_obj, const H5VL_loc_params_t *loc_params1,
+ *
+ * Purpose: Moves a link within an HDF5 file to a new group. The original
+ * name SRC is unlinked from the group graph
+ * and then inserted with the new name DST (which can specify a
+ * new path for the object) as an atomic operation. The names
+ * are interpreted relative to SRC_LOC_ID and
+ * DST_LOC_ID, which are either file IDs or group ID.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_link_move(void *src_obj, const H5VL_loc_params_t *loc_params1,
+ void *dst_obj, const H5VL_loc_params_t *loc_params2, hid_t lcpl_id,
+ hid_t lapl_id, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *o_src = (H5VL_pass_through_t *)src_obj;
+ H5VL_pass_through_t *o_dst = (H5VL_pass_through_t *)dst_obj;
+ hid_t under_vol_id = -1;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL LINK Move\n");
+#endif
+
+ /* Retrieve the "under" VOL id */
+ if(o_src)
+ under_vol_id = o_src->under_vol_id;
+ else if(o_dst)
+ under_vol_id = o_dst->under_vol_id;
+ assert(under_vol_id > 0);
+
+ ret_value = H5VLlink_move((o_src ? o_src->under_object : NULL), loc_params1, (o_dst ? o_dst->under_object : NULL), loc_params2, under_vol_id, lcpl_id, lapl_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_link_move() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_link_get
+ *
+ * Purpose: Get info about a link
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_link_get(void *obj, const H5VL_loc_params_t *loc_params,
+ H5VL_link_get_t get_type, hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL LINK Get\n");
+#endif
+
+ ret_value = H5VLlink_get(o->under_object, loc_params, o->under_vol_id, get_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_link_get() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_link_specific
+ *
+ * Purpose: Specific operation on a link
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_link_specific(void *obj, const H5VL_loc_params_t *loc_params,
+ H5VL_link_specific_t specific_type, hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL LINK Specific\n");
+#endif
+
+ ret_value = H5VLlink_specific(o->under_object, loc_params, o->under_vol_id, specific_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_link_specific() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_link_optional
+ *
+ * Purpose: Perform a connector-specific operation on a link
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_link_optional(void *obj, hid_t dxpl_id, void **req,
+ va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL LINK Optional\n");
+#endif
+
+ ret_value = H5VLlink_optional(o->under_object, o->under_vol_id, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_link_optional() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_object_open
+ *
+ * Purpose: Opens an object inside a container.
+ *
+ * Return: Success: Pointer to object
+ * Failure: NULL
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5VL_pass_through_object_open(void *obj, const H5VL_loc_params_t *loc_params,
+ H5I_type_t *opened_type, hid_t dxpl_id, void **req)
+{
+ H5VL_pass_through_t *new_obj;
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ void *under;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL OBJECT Open\n");
+#endif
+
+ under = H5VLobject_open(o->under_object, loc_params, o->under_vol_id, opened_type, dxpl_id, req);
+ if(under) {
+ new_obj = (H5VL_pass_through_t *)calloc(1, sizeof(H5VL_pass_through_t));
+ new_obj->under_object = under;
+ new_obj->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(new_obj->under_vol_id);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+ } /* end if */
+ else
+ new_obj = NULL;
+
+ return((void *)new_obj);
+} /* end H5VL_pass_through_object_open() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_object_copy
+ *
+ * Purpose: Copies an object inside a container.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_object_copy(void *src_obj, const H5VL_loc_params_t *src_loc_params,
+ const char *src_name, void *dst_obj, const H5VL_loc_params_t *dst_loc_params,
+ const char *dst_name, hid_t ocpypl_id, hid_t lcpl_id, hid_t dxpl_id,
+ void **req)
+{
+ H5VL_pass_through_t *o_src = (H5VL_pass_through_t *)src_obj;
+ H5VL_pass_through_t *o_dst = (H5VL_pass_through_t *)dst_obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL OBJECT Copy\n");
+#endif
+
+ ret_value = H5VLobject_copy(o_src->under_object, src_loc_params, src_name, o_dst->under_object, dst_loc_params, dst_name, o_src->under_vol_id, ocpypl_id, lcpl_id, dxpl_id, req);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o_src->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_object_copy() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_object_get
+ *
+ * Purpose: Get info about an object
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_object_get(void *obj, const H5VL_loc_params_t *loc_params, H5VL_object_get_t get_type, hid_t dxpl_id, void **req, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL OBJECT Get\n");
+#endif
+
+ ret_value = H5VLobject_get(o->under_object, loc_params, o->under_vol_id, get_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_object_get() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_object_specific
+ *
+ * Purpose: Specific operation on an object
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_object_specific(void *obj, const H5VL_loc_params_t *loc_params,
+ H5VL_object_specific_t specific_type, hid_t dxpl_id, void **req,
+ va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL OBJECT Specific\n");
+#endif
+
+ ret_value = H5VLobject_specific(o->under_object, loc_params, o->under_vol_id, specific_type, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_object_specific() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_object_optional
+ *
+ * Purpose: Perform a connector-specific operation for an object
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_object_optional(void *obj, hid_t dxpl_id, void **req,
+ va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL OBJECT Optional\n");
+#endif
+
+ ret_value = H5VLobject_optional(o->under_object, o->under_vol_id, dxpl_id, req, arguments);
+
+ /* Check for async request */
+ if(req && *req) {
+ H5VL_pass_through_t *r;
+
+ r = (H5VL_pass_through_t*)calloc(1, sizeof(H5VL_pass_through_t));
+ r->under_object = *req;
+ r->under_vol_id = o->under_vol_id;
+ H5Iinc_ref(r->under_vol_id);
+
+ *req = r;
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_object_optional() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_request_wait
+ *
+ * Purpose: Wait (with a timeout) for an async operation to complete
+ *
+ * Note: Releases the request if the operation has completed and the
+ * connector callback succeeds
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_request_wait(void *obj, uint64_t timeout,
+ H5ES_status_t *status)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL REQUEST Wait\n");
+#endif
+
+ ret_value = H5VLrequest_wait(o->under_object, o->under_vol_id, timeout, status);
+
+ if(ret_value >= 0 && *status != H5ES_STATUS_IN_PROGRESS) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_request_wait() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_request_notify
+ *
+ * Purpose: Registers a user callback to be invoked when an asynchronous
+ * operation completes
+ *
+ * Note: Releases the request, if connector callback succeeds
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_request_notify(void *obj, H5VL_request_notify_t cb, void *ctx)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL REQUEST Wait\n");
+#endif
+
+ ret_value = H5VLrequest_notify(o->under_object, o->under_vol_id, cb, ctx);
+
+ if(ret_value >= 0) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_request_notify() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_request_cancel
+ *
+ * Purpose: Cancels an asynchronous operation
+ *
+ * Note: Releases the request, if connector callback succeeds
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_request_cancel(void *obj)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL REQUEST Cancel\n");
+#endif
+
+ ret_value = H5VLrequest_cancel(o->under_object, o->under_vol_id);
+
+ if(ret_value >= 0) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_request_cancel() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_request_specific_reissue
+ *
+ * Purpose: Re-wrap vararg arguments into a va_list and reissue the
+ * request specific callback to the underlying VOL connector.
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_request_specific_reissue(void *obj, hid_t connector_id,
+ H5VL_request_specific_t specific_type, ...)
+{
+ va_list arguments;
+ herr_t ret_value;
+
+ va_start(arguments, specific_type);
+ ret_value = H5VLrequest_specific(obj, connector_id, specific_type, arguments);
+ va_end(arguments);
+
+ return(ret_value);
+} /* end H5VL_pass_through_request_specific_reissue() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_request_specific
+ *
+ * Purpose: Specific operation on a request
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_request_specific(void *obj, H5VL_request_specific_t specific_type,
+ va_list arguments)
+{
+ herr_t ret_value = -1;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL REQUEST Specific\n");
+#endif
+
+ if(H5VL_REQUEST_WAITANY == specific_type ||
+ H5VL_REQUEST_WAITSOME == specific_type ||
+ H5VL_REQUEST_WAITALL == specific_type) {
+ va_list tmp_arguments;
+ size_t req_count;
+
+ /* Sanity check */
+ assert(obj == NULL);
+
+ /* Get enough info to call the underlying connector */
+ va_copy(tmp_arguments, arguments);
+ req_count = va_arg(tmp_arguments, size_t);
+
+ /* Can only use a request to invoke the underlying VOL connector when there's >0 requests */
+ if(req_count > 0) {
+ void **req_array;
+ void **under_req_array;
+ uint64_t timeout;
+ H5VL_pass_through_t *o;
+ size_t u; /* Local index variable */
+
+ /* Get the request array */
+ req_array = va_arg(tmp_arguments, void **);
+
+ /* Get a request to use for determining the underlying VOL connector */
+ o = (H5VL_pass_through_t *)req_array[0];
+
+ /* Create array of underlying VOL requests */
+ under_req_array = (void **)malloc(req_count * sizeof(void **));
+ for(u = 0; u < req_count; u++)
+ under_req_array[u] = ((H5VL_pass_through_t *)req_array[u])->under_object;
+
+ /* Remove the timeout value from the vararg list (it's used in all the calls below) */
+ timeout = va_arg(tmp_arguments, uint64_t);
+
+ /* Release requests that have completed */
+ if(H5VL_REQUEST_WAITANY == specific_type) {
+ size_t *index; /* Pointer to the index of completed request */
+ H5ES_status_t *status; /* Pointer to the request's status */
+
+ /* Retrieve the remaining arguments */
+ index = va_arg(tmp_arguments, size_t *);
+ assert(*index <= req_count);
+ status = va_arg(tmp_arguments, H5ES_status_t *);
+
+ /* Reissue the WAITANY 'request specific' call */
+ ret_value = H5VL_pass_through_request_specific_reissue(o->under_object, o->under_vol_id, specific_type, req_count, under_req_array, timeout, index, status);
+
+ /* Release the completed request, if it completed */
+ if(ret_value >= 0 && *status != H5ES_STATUS_IN_PROGRESS) {
+ H5VL_pass_through_t *tmp_o;
+
+ tmp_o = (H5VL_pass_through_t *)req_array[*index];
+ H5Idec_ref(tmp_o->under_vol_id);
+ free(tmp_o);
+ } /* end if */
+ } /* end if */
+ else if(H5VL_REQUEST_WAITSOME == specific_type) {
+ size_t *outcount; /* # of completed requests */
+ unsigned *array_of_indices; /* Array of indices for completed requests */
+ H5ES_status_t *array_of_statuses; /* Array of statuses for completed requests */
+
+ /* Retrieve the remaining arguments */
+ outcount = va_arg(tmp_arguments, size_t *);
+ assert(*outcount <= req_count);
+ array_of_indices = va_arg(tmp_arguments, unsigned *);
+ array_of_statuses = va_arg(tmp_arguments, H5ES_status_t *);
+
+ /* Reissue the WAITSOME 'request specific' call */
+ ret_value = H5VL_pass_through_request_specific_reissue(o->under_object, o->under_vol_id, specific_type, req_count, under_req_array, timeout, outcount, array_of_indices, array_of_statuses);
+
+ /* If any requests completed, release them */
+ if(ret_value >= 0 && *outcount > 0) {
+ unsigned *idx_array; /* Array of indices of completed requests */
+
+ /* Retrieve the array of completed request indices */
+ idx_array = va_arg(tmp_arguments, unsigned *);
+
+ /* Release the completed requests */
+ for(u = 0; u < *outcount; u++) {
+ H5VL_pass_through_t *tmp_o;
+
+ tmp_o = (H5VL_pass_through_t *)req_array[idx_array[u]];
+ H5Idec_ref(tmp_o->under_vol_id);
+ free(tmp_o);
+ } /* end for */
+ } /* end if */
+ } /* end else-if */
+ else { /* H5VL_REQUEST_WAITALL == specific_type */
+ H5ES_status_t *array_of_statuses; /* Array of statuses for completed requests */
+
+ /* Retrieve the remaining arguments */
+ array_of_statuses = va_arg(tmp_arguments, H5ES_status_t *);
+
+ /* Reissue the WAITALL 'request specific' call */
+ ret_value = H5VL_pass_through_request_specific_reissue(o->under_object, o->under_vol_id, specific_type, req_count, under_req_array, timeout, array_of_statuses);
+
+ /* Release the completed requests */
+ if(ret_value >= 0) {
+ for(u = 0; u < req_count; u++) {
+ if(array_of_statuses[u] != H5ES_STATUS_IN_PROGRESS) {
+ H5VL_pass_through_t *tmp_o;
+
+ tmp_o = (H5VL_pass_through_t *)req_array[u];
+ H5Idec_ref(tmp_o->under_vol_id);
+ free(tmp_o);
+ } /* end if */
+ } /* end for */
+ } /* end if */
+ } /* end else */
+
+ /* Release array of requests for underlying connector */
+ free(under_req_array);
+ } /* end if */
+
+ /* Finish use of copied vararg list */
+ va_end(tmp_arguments);
+ } /* end if */
+ else
+ assert(0 && "Unknown 'specific' operation");
+
+ return(ret_value);
+} /* end H5VL_pass_through_request_specific() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_request_optional
+ *
+ * Purpose: Perform a connector-specific operation for a request
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_request_optional(void *obj, va_list arguments)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL REQUEST Optional\n");
+#endif
+
+ ret_value = H5VLrequest_optional(o->under_object, o->under_vol_id, arguments);
+
+ return(ret_value);
+} /* end H5VL_pass_through_request_optional() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5VL_pass_through_request_free
+ *
+ * Purpose: Releases a request, allowing the operation to complete without
+ * application tracking
+ *
+ * Return: Success: 0
+ * Failure: -1
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL_pass_through_request_free(void *obj)
+{
+ H5VL_pass_through_t *o = (H5VL_pass_through_t *)obj;
+ herr_t ret_value;
+
+#ifdef ENABLE_LOGGING
+ printf("------- PASS THROUGH VOL REQUEST Free\n");
+#endif
+
+ ret_value = H5VLrequest_free(o->under_object, o->under_vol_id);
+
+ if(ret_value >= 0) {
+ H5Idec_ref(o->under_vol_id);
+ free(o);
+ } /* end if */
+
+ return(ret_value);
+} /* end H5VL_pass_through_request_free() */
+
diff --git a/src/H5VLpassthru.h b/src/H5VLpassthru.h
new file mode 100644
index 0000000..e640636
--- /dev/null
+++ b/src/H5VLpassthru.h
@@ -0,0 +1,46 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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://support.hdfgroup.org/ftp/HDF5/releases. *
+ * If you do not have access to either file, you may request a copy from *
+ * help@hdfgroup.org. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Purpose: The public header file for the pass-through VOL connector.
+ */
+
+#ifndef _H5VLpassthru_H
+#define _H5VLpassthru_H
+
+/* Identifier for the pass-through VOL connector */
+#define H5VL_PASSTHRU (H5VL_pass_through_register())
+
+/* Characteristics of the pass-through VOL connector */
+#define H5VL_PASSTHRU_NAME "pass_through"
+#define H5VL_PASSTHRU_VALUE 505 /* VOL connector ID */
+#define H5VL_PASSTHRU_VERSION 0
+
+/* Pass-through VOL connector info */
+typedef struct H5VL_pass_through_info_t {
+ hid_t under_vol_id; /* VOL ID for under VOL */
+ void *under_vol_info; /* VOL info for under VOL */
+} H5VL_pass_through_info_t;
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+H5_DLL hid_t H5VL_pass_through_register(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _H5VLpassthru_H */
+
diff --git a/src/Makefile.am b/src/Makefile.am
index d91cca8..69b51b2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -114,7 +114,7 @@ libhdf5_la_SOURCES= H5.c H5checksum.c H5dbg.c H5system.c H5timer.c H5trace.c \
H5Topaque.c \
H5Torder.c \
H5Tpad.c H5Tprecis.c H5Tstrpad.c H5Tvisit.c H5Tvlen.c H5TS.c \
- H5VL.c H5VLcallback.c H5VLint.c H5VLnative.c \
+ H5VL.c H5VLcallback.c H5VLint.c H5VLnative.c H5VLpassthru.c \
H5VM.c H5WB.c H5Z.c \
H5Zdeflate.c H5Zfletcher32.c H5Znbit.c H5Zshuffle.c \
H5Zscaleoffset.c H5Zszip.c H5Ztrans.c
@@ -141,7 +141,7 @@ include_HEADERS = hdf5.h H5api_adpt.h H5overflow.h H5pubconf.h H5public.h H5vers
H5MMpublic.h H5Opublic.h H5Ppublic.h \
H5PLextern.h H5PLpublic.h \
H5Rpublic.h H5Spublic.h H5Tpublic.h \
- H5VLnative.h H5VLpublic.h H5Zpublic.h
+ H5VLnative.h H5VLpassthru.h H5VLpublic.h H5Zpublic.h
# install libhdf5.settings in lib directory
settingsdir=$(libdir)
diff --git a/src/hdf5.h b/src/hdf5.h
index f19abd9..c12037f 100644
--- a/src/hdf5.h
+++ b/src/hdf5.h
@@ -52,7 +52,8 @@
#include "H5FDwindows.h" /* Win32 I/O */
#endif
-/* Virtual object layer drivers */
-#include "H5VLnative.h" /* Native VOL driver */
+/* Virtual object layer (VOL) connectors */
+#include "H5VLnative.h" /* Native VOL connector */
+#include "H5VLpassthru.h" /* Pass-through VOL connector */
#endif