diff options
Diffstat (limited to 'src/H5VLnative_object.c')
| -rw-r--r-- | src/H5VLnative_object.c | 588 |
1 files changed, 588 insertions, 0 deletions
diff --git a/src/H5VLnative_object.c b/src/H5VLnative_object.c new file mode 100644 index 0000000..8f60ac4 --- /dev/null +++ b/src/H5VLnative_object.c @@ -0,0 +1,588 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * 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: Object callbacks for the native VOL connector + * + */ + +#define H5O_FRIEND /* Suppress error about including H5Opkg */ +#define H5F_FRIEND /* Suppress error about including H5Fpkg */ + +#include "H5private.h" /* Generic Functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5Fpkg.h" /* Files (pkg needed for id_exists) */ +#include "H5Gprivate.h" /* Groups */ +#include "H5Iprivate.h" /* IDs */ +#include "H5Opkg.h" /* Object headers */ +#include "H5Pprivate.h" /* Property lists */ +#include "H5VLprivate.h" /* Virtual Object Layer */ + +#include "H5VLnative_private.h" /* Native VOL connector */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__native_object_open + * + * Purpose: Handles the object open callback + * + * Return: Success: object pointer + * Failure: NULL + * + *------------------------------------------------------------------------- + */ +void * +H5VL__native_object_open(void *obj, const H5VL_loc_params_t *loc_params, H5I_type_t *opened_type, + hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req) +{ + H5G_loc_t loc; + void *ret_value = NULL; + + FUNC_ENTER_PACKAGE + + if(H5G_loc_real(obj, loc_params->obj_type, &loc) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a file or file object") + + switch(loc_params->type) { + case H5VL_OBJECT_BY_NAME: + { + /* Open the object */ + if(NULL == (ret_value = H5O_open_name(&loc, loc_params->loc_data.loc_by_name.name, opened_type))) + HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, NULL, "unable to open object by name") + break; + } + + case H5VL_OBJECT_BY_IDX: + { + /* Open the object */ + if(NULL == (ret_value = H5O_open_by_idx(&loc, loc_params->loc_data.loc_by_idx.name, loc_params->loc_data.loc_by_idx.idx_type, + loc_params->loc_data.loc_by_idx.order, loc_params->loc_data.loc_by_idx.n, opened_type))) + HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, NULL, "unable to open object by index") + break; + } + + case H5VL_OBJECT_BY_TOKEN: + { + H5O_token_t token = *loc_params->loc_data.loc_by_token.token; + haddr_t addr; + + /* Decode token */ + if(H5VL_native_token_to_addr(loc.oloc->file, H5I_FILE, token, &addr) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTUNSERIALIZE, NULL, "can't deserialize object token into address") + + /* Open the object */ + if(NULL == (ret_value = H5O_open_by_addr(&loc, addr, opened_type))) + HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, NULL, "unable to open object by address") + break; + } + + case H5VL_OBJECT_BY_SELF: + default: + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, NULL, "unknown open parameters") + } /* end switch */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__native_object_open() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__native_object_copy + * + * Purpose: Handles the object copy callback + * + * Return: SUCCEED/FAIL + * + *------------------------------------------------------------------------- + */ +herr_t +H5VL__native_object_copy(void *src_obj, const H5VL_loc_params_t *loc_params1, const char *src_name, + void *dst_obj, const H5VL_loc_params_t *loc_params2, const char *dst_name, + hid_t ocpypl_id, hid_t lcpl_id, hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req) +{ + H5G_loc_t src_loc; /* Source object group location */ + H5G_loc_t dst_loc; /* Destination group location */ + herr_t ret_value = FAIL; + + FUNC_ENTER_PACKAGE + + /* get location for objects */ + if(H5G_loc_real(src_obj, loc_params1->obj_type, &src_loc) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object") + if(H5G_loc_real(dst_obj, loc_params2->obj_type, &dst_loc) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object") + + /* Copy the object */ + if((ret_value = H5O_copy(&src_loc, src_name, &dst_loc, dst_name, ocpypl_id, lcpl_id)) < 0) + HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, FAIL, "unable to copy object") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__native_object_copy() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__native_object_get + * + * Purpose: Handles the object get callback + * + * Return: SUCCEED/FAIL + * + *------------------------------------------------------------------------- + */ +herr_t +H5VL__native_object_get(void *obj, const H5VL_loc_params_t *loc_params, H5VL_object_get_t get_type, + hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req, va_list arguments) +{ + herr_t ret_value = SUCCEED; /* Return value */ + H5G_loc_t loc; /* Location of group */ + + FUNC_ENTER_PACKAGE + + if(H5G_loc_real(obj, loc_params->obj_type, &loc) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object") + + switch(get_type) { + + /* Object file */ + case H5VL_OBJECT_GET_FILE: + { + void **ret = HDva_arg(arguments, void **); + + if(loc_params->type == H5VL_OBJECT_BY_SELF) { + *ret = (void *)loc.oloc->file; + + /* TODO we currently need to set id_exists to TRUE because + * the upper layer will create an ID from the returned + * object. In theory this should not be needed and id_exists + * should be removed once the H5Fmount code gets fixed. */ + loc.oloc->file->id_exists = TRUE; + } else + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "unknown get_file parameters") + break; + } + + /* Object name */ + case H5VL_OBJECT_GET_NAME: + { + ssize_t *ret = HDva_arg(arguments, ssize_t *); + char *name = HDva_arg(arguments, char *); + size_t size = HDva_arg(arguments, size_t); + + if(loc_params->type == H5VL_OBJECT_BY_SELF) { + /* Retrieve object's name */ + if((*ret = H5G_get_name(&loc, name, size, NULL)) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't retrieve object name") + } /* end if */ + else if(loc_params->type == H5VL_OBJECT_BY_TOKEN) { + H5O_loc_t obj_oloc; /* Object location */ + H5O_token_t token = *loc_params->loc_data.loc_by_token.token; + + /* Initialize the object location */ + H5O_loc_reset(&obj_oloc); + obj_oloc.file = loc.oloc->file; + + /* Decode token */ + if(H5VL_native_token_to_addr(obj_oloc.file, H5I_FILE, token, &obj_oloc.addr) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTUNSERIALIZE, FAIL, "can't deserialize object token into address") + + /* Retrieve object's name */ + if((*ret = H5G_get_name_by_addr(loc.oloc->file, &obj_oloc, name, size)) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't determine object name") + } /* end else-if */ + else + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "unknown get_name parameters") + break; + } + + /* Object type */ + case H5VL_OBJECT_GET_TYPE: + { + H5O_type_t *obj_type = HDva_arg(arguments, H5O_type_t *); + + if(loc_params->type == H5VL_OBJECT_BY_TOKEN) { + H5O_loc_t obj_oloc; /* Object location */ + unsigned rc; /* Reference count of object */ + H5O_token_t token = *loc_params->loc_data.loc_by_token.token; + + /* Initialize the object location */ + H5O_loc_reset(&obj_oloc); + obj_oloc.file = loc.oloc->file; + + /* Decode token */ + if(H5VL_native_token_to_addr(obj_oloc.file, H5I_FILE, token, &obj_oloc.addr) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTUNSERIALIZE, FAIL, "can't deserialize object token into address") + + /* Get the # of links for object, and its type */ + /* (To check to make certain that this object hasn't been deleted) */ + if(H5O_get_rc_and_type(&obj_oloc, &rc, obj_type) < 0 || 0 == rc) + HGOTO_ERROR(H5E_REFERENCE, H5E_LINKCOUNT, FAIL, "dereferencing deleted object") + } else + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "unknown get_type parameters") + break; + } + + /* H5Oget_info(_name|_by_idx)3 */ + case H5VL_OBJECT_GET_INFO: + { + H5O_info2_t *oinfo = HDva_arg(arguments, H5O_info2_t *); + unsigned fields = HDva_arg(arguments, unsigned); + + /* Use the original H5Oget_info code to get the data */ + + if(loc_params->type == H5VL_OBJECT_BY_SELF) { /* H5Oget_info */ + /* Retrieve the object's information */ + if(H5G_loc_info(&loc, ".", oinfo, fields) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + } /* end if */ + else if(loc_params->type == H5VL_OBJECT_BY_NAME) { /* H5Oget_info_by_name */ + /* Retrieve the object's information */ + if(H5G_loc_info(&loc, loc_params->loc_data.loc_by_name.name, oinfo, fields) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + } /* end else-if */ + else if(loc_params->type == H5VL_OBJECT_BY_IDX) { /* H5Oget_info_by_idx */ + H5G_loc_t obj_loc; /* Location used to open group */ + H5G_name_t obj_path; /* Opened object group hier. path */ + H5O_loc_t obj_oloc; /* Opened object object location */ + + /* Set up opened group location to fill in */ + obj_loc.oloc = &obj_oloc; + obj_loc.path = &obj_path; + H5G_loc_reset(&obj_loc); + + /* Find the object's location, according to the order in the index */ + if(H5G_loc_find_by_idx(&loc, loc_params->loc_data.loc_by_idx.name, + loc_params->loc_data.loc_by_idx.idx_type, + loc_params->loc_data.loc_by_idx.order, + loc_params->loc_data.loc_by_idx.n, &obj_loc/*out*/) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "group not found") + + /* Retrieve the object's information */ + if(H5O_get_info(obj_loc.oloc, oinfo, fields) < 0) { + H5G_loc_free(&obj_loc); + HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't retrieve object info") + } /* end if */ + + /* Release the object location */ + if(H5G_loc_free(&obj_loc) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "can't free location") + } /* end else-if */ + else + HGOTO_ERROR(H5E_OHDR, H5E_UNSUPPORTED, FAIL, "unknown get info parameters") + break; + } + + default: + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't get this type of information from object") + } /* end switch */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__native_object_get() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__native_object_specific + * + * Purpose: Handles the object specific callback + * + * Return: SUCCEED/FAIL + * + *------------------------------------------------------------------------- + */ +herr_t +H5VL__native_object_specific(void *obj, const H5VL_loc_params_t *loc_params, H5VL_object_specific_t specific_type, + hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req, va_list arguments) +{ + H5G_loc_t loc; + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + if(H5G_loc_real(obj, loc_params->obj_type, &loc) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object") + + switch(specific_type) { + /* H5Oincr_refcount / H5Odecr_refcount */ + case H5VL_OBJECT_CHANGE_REF_COUNT: + { + int update_ref = HDva_arg(arguments, int); + H5O_loc_t *oloc = loc.oloc; + + if(H5O_link(oloc, update_ref) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_LINKCOUNT, FAIL, "modifying object link count failed") + + break; + } + + /* H5Oexists_by_name */ + case H5VL_OBJECT_EXISTS: + { + htri_t *ret = HDva_arg(arguments, htri_t *); + + if(loc_params->type == H5VL_OBJECT_BY_NAME) { + /* Check if the object exists */ + if((*ret = H5G_loc_exists(&loc, loc_params->loc_data.loc_by_name.name)) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to determine if '%s' exists", loc_params->loc_data.loc_by_name.name) + } /* end if */ + else + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "unknown object exists parameters") + break; + } + + /* Lookup object */ + case H5VL_OBJECT_LOOKUP: + { + H5O_token_t *token = va_arg(arguments, H5O_token_t *); + + HDassert(token); + + if(loc_params->type == H5VL_OBJECT_BY_NAME) { + H5G_loc_t obj_loc; /* Group hier. location of object */ + H5G_name_t obj_path; /* Object group hier. path */ + H5O_loc_t obj_oloc; /* Object object location */ + + /* Set up opened group location to fill in */ + obj_loc.oloc = &obj_oloc; + obj_loc.path = &obj_path; + H5G_loc_reset(&obj_loc); + + /* Find the object */ + if(H5G_loc_find(&loc, loc_params->loc_data.loc_by_name.name, &obj_loc) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + + /* Encode token */ + if(H5VL_native_addr_to_token(loc.oloc->file, H5I_FILE, obj_loc.oloc->addr, token) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "can't serialize address into object token") + + /* Release the object location */ + if(H5G_loc_free(&obj_loc) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "can't free location") + } /* end if */ + else + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "unknown object exists parameters") + break; + } + + case H5VL_OBJECT_VISIT: + { + H5_index_t idx_type = (H5_index_t)HDva_arg(arguments, int); /* enum work-around */ + H5_iter_order_t order = (H5_iter_order_t)HDva_arg(arguments, int); /* enum work-around */ + H5O_iterate2_t op = HDva_arg(arguments, H5O_iterate2_t); + void *op_data = HDva_arg(arguments, void *); + unsigned fields = HDva_arg(arguments, unsigned); + + /* Call internal object visitation routine */ + if(loc_params->type == H5VL_OBJECT_BY_SELF) { + /* H5Ovisit */ + if((ret_value = H5O__visit(&loc, ".", idx_type, order, op, op_data, fields)) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_BADITER, FAIL, "object visitation failed") + } /* end if */ + else if(loc_params->type == H5VL_OBJECT_BY_NAME) { + /* H5Ovisit_by_name */ + if((ret_value = H5O__visit(&loc, loc_params->loc_data.loc_by_name.name, idx_type, order, op, op_data, fields)) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_BADITER, FAIL, "object visitation failed") + } /* end else-if */ + else + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "unknown object visit params"); + break; + } + + case H5VL_OBJECT_FLUSH: + { + hid_t oid = HDva_arg(arguments, hid_t); + + /* Flush the object's metadata */ + if(H5O_flush(loc.oloc, oid) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTFLUSH, FAIL, "unable to flush object") + + break; + } + + case H5VL_OBJECT_REFRESH: + { + hid_t oid = HDva_arg(arguments, hid_t); + H5O_loc_t *oloc = loc.oloc; + + /* Refresh the metadata */ + if(H5O_refresh_metadata(oid, *oloc) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, FAIL, "unable to refresh object") + + break; + } + + default: + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't recognize this operation type") + } /* end switch */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__native_object_specific() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__native_object_optional + * + * Purpose: Handles the object optional callback + * + * Return: SUCCEED/FAIL + * + *------------------------------------------------------------------------- + */ +herr_t +H5VL__native_object_optional(void *obj, H5VL_object_optional_t optional_type, + hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req, va_list arguments) +{ + H5VL_loc_params_t *loc_params = HDva_arg(arguments, H5VL_loc_params_t *); + H5G_loc_t loc; /* Location of group */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + if(H5G_loc_real(obj, loc_params->obj_type, &loc) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object") + + switch(optional_type) { + /* H5Oget_comment / H5Oget_comment_by_name */ + case H5VL_NATIVE_OBJECT_GET_COMMENT: + { + char *comment = HDva_arg(arguments, char *); + size_t bufsize = HDva_arg(arguments, size_t); + ssize_t *ret = HDva_arg(arguments, ssize_t *); + + /* Retrieve the object's comment */ + if(loc_params->type == H5VL_OBJECT_BY_SELF) { /* H5Oget_comment */ + if((*ret = H5G_loc_get_comment(&loc, ".", comment/*out*/, bufsize)) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + } /* end if */ + else if(loc_params->type == H5VL_OBJECT_BY_NAME) { /* H5Oget_comment_by_name */ + if((*ret = H5G_loc_get_comment(&loc, loc_params->loc_data.loc_by_name.name, comment/*out*/, bufsize)) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + } /* end else-if */ + else + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "unknown set_coment parameters") + break; + } + + /* H5Oset_comment */ + case H5VL_NATIVE_OBJECT_SET_COMMENT: + { + const char *comment = HDva_arg(arguments, char *); + + if(loc_params->type == H5VL_OBJECT_BY_SELF) { /* H5Oset_comment */ + /* (Re)set the object's comment */ + if(H5G_loc_set_comment(&loc, ".", comment) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + } /* end if */ + else if(loc_params->type == H5VL_OBJECT_BY_NAME) { /* H5Oset_comment_by_name */ + /* (Re)set the object's comment */ + if(H5G_loc_set_comment(&loc, loc_params->loc_data.loc_by_name.name, comment) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + } /* end else-if */ + else + HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "unknown set_coment parameters") + break; + } + + /* H5Odisable_mdc_flushes */ + case H5VL_NATIVE_OBJECT_DISABLE_MDC_FLUSHES: + { + H5O_loc_t *oloc = loc.oloc; + + if (H5O_disable_mdc_flushes(oloc) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTCORK, FAIL, "unable to cork the metadata cache"); + + break; + } + + /* H5Oenable_mdc_flushes */ + case H5VL_NATIVE_OBJECT_ENABLE_MDC_FLUSHES: + { + H5O_loc_t *oloc = loc.oloc; + + if (H5O_enable_mdc_flushes(oloc) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTUNCORK, FAIL, "unable to uncork the metadata cache"); + + break; + } + + /* H5Oare_mdc_flushes_disabled */ + case H5VL_NATIVE_OBJECT_ARE_MDC_FLUSHES_DISABLED: + { + H5O_loc_t *oloc = loc.oloc; + hbool_t *are_disabled = (hbool_t *)HDva_arg(arguments, hbool_t *); + + if (H5O_are_mdc_flushes_disabled(oloc, are_disabled) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to determine metadata cache cork status"); + + break; + } + + /* H5Oget_native_info(_name|_by_idx) */ + case H5VL_NATIVE_OBJECT_GET_NATIVE_INFO: + { + H5O_native_info_t *native_info = HDva_arg(arguments, H5O_native_info_t *); + unsigned fields = HDva_arg(arguments, unsigned); + + /* Use the original H5Oget_info code to get the data */ + + if(loc_params->type == H5VL_OBJECT_BY_SELF) { /* H5Oget_info */ + /* Retrieve the object's information */ + if(H5G_loc_native_info(&loc, ".", native_info, fields) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + } /* end if */ + else if(loc_params->type == H5VL_OBJECT_BY_NAME) { /* H5Oget_info_by_name */ + /* Retrieve the object's information */ + if(H5G_loc_native_info(&loc, loc_params->loc_data.loc_by_name.name, native_info, fields) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") + } /* end else-if */ + else if(loc_params->type == H5VL_OBJECT_BY_IDX) { /* H5Oget_info_by_idx */ + H5G_loc_t obj_loc; /* Location used to open group */ + H5G_name_t obj_path; /* Opened object group hier. path */ + H5O_loc_t obj_oloc; /* Opened object object location */ + + /* Set up opened group location to fill in */ + obj_loc.oloc = &obj_oloc; + obj_loc.path = &obj_path; + H5G_loc_reset(&obj_loc); + + /* Find the object's location, according to the order in the index */ + if(H5G_loc_find_by_idx(&loc, loc_params->loc_data.loc_by_idx.name, + loc_params->loc_data.loc_by_idx.idx_type, + loc_params->loc_data.loc_by_idx.order, + loc_params->loc_data.loc_by_idx.n, &obj_loc/*out*/) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "group not found") + + /* Retrieve the object's information */ + if(H5O_get_native_info(obj_loc.oloc, native_info, fields) < 0) { + H5G_loc_free(&obj_loc); + HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't retrieve object info") + } /* end if */ + + /* Release the object location */ + if(H5G_loc_free(&obj_loc) < 0) + HGOTO_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "can't free location") + } /* end else-if */ + else + HGOTO_ERROR(H5E_OHDR, H5E_UNSUPPORTED, FAIL, "unknown get info parameters") + + break; + } + + default: + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't perform this operation on object"); + } /* end switch */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__native_object_optional() */ + |