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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Purpose: The public header file for the "splitter" driver.
*/
#ifndef H5FDsplitter_H
#define H5FDsplitter_H
#define H5FD_SPLITTER (H5FD_splitter_init())
/* The version of the H5FD_splitter_vfd_config_t structure used */
#define H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION 1
/* Maximum length of a filename/path string in the Write-Only channel,
* including the NULL-terminator.
*/
#define H5FD_SPLITTER_PATH_MAX 4096
/* Semi-unique constant used to help identify structure pointers */
#define H5FD_SPLITTER_MAGIC 0x2B916880
/* ----------------------------------------------------------------------------
* Structure: H5FD_spliiter_vfd_config_t
*
* One-stop shopping for configuring a Splitter VFD (rather than many
* paramaters passed into H5Pset/get functions).
*
* magic (int32_t)
* Semi-unique number, used to sanity-check that a given pointer is
* likely (or not) to be this structure type. MUST be first.
* If magic is not H5FD_SPLITTER_MAGIC, the structure (and/or pointer to)
* must be considered invalid.
*
* version (unsigned int)
* Version number of this structure -- informs component membership.
* If not H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION, the structure (and/or
* pointer to) must be considered invalid.
*
* rw_fapl_id (hid_t)
* Library-given identification number of the Read/Write channel driver
* File Access Property List.
* The driver must support read/write access.
* Must be set to H5P_DEFAULT or a valid FAPL ID.
*
* wo_fapl_id (hid_t)
* Library-given identification number of the Read/Write channel driver
* File Access Property List.
* The driver feature flags must include H5FD_FEAT_DEFAULT_VFD_COMPAITBLE.
* Must be set to H5P_DEFAULT or a valid FAPL ID.
*
* wo_file_path (char[H5FD_SPLITTER_PATH_MAX + 1])
* String buffer for the Write-Only channel target file.
* Must be null-terminated, cannot be empty.
*
* log_file_path (char[H5FD_SPLITTER_PATH_MAX + 1])
* String buffer for the Splitter VFD logging output.
* Must be null-terminated.
* If null, no logfile is created.
*
* ignore_wo_errors (hbool_t)
* Toggle flag for how judiciously to respond to errors on the Write-Only
* channel.
*
* ----------------------------------------------------------------------------
*/
typedef struct H5FD_splitter_vfd_config_t {
int32_t magic;
unsigned int version;
hid_t rw_fapl_id;
hid_t wo_fapl_id;
char wo_path[H5FD_SPLITTER_PATH_MAX + 1];
char log_file_path[H5FD_SPLITTER_PATH_MAX + 1];
hbool_t ignore_wo_errs;
} H5FD_splitter_vfd_config_t;
#ifdef __cplusplus
extern "C" {
#endif
H5_DLL hid_t H5FD_splitter_init(void);
H5_DLL herr_t H5Pset_fapl_splitter(hid_t fapl_id, H5FD_splitter_vfd_config_t *config_ptr);
H5_DLL herr_t H5Pget_fapl_splitter(hid_t fapl_id, H5FD_splitter_vfd_config_t *config_ptr);
#ifdef __cplusplus
}
#endif
#endif
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