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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: Link callbacks for the native VOL connector
*
*/
#define H5L_FRIEND /* Suppress error about including H5Lpkg */
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Gprivate.h" /* Groups */
#include "H5Iprivate.h" /* IDs */
#include "H5Lpkg.h" /* Links */
#include "H5Pprivate.h" /* Property lists */
#include "H5VLprivate.h" /* Virtual Object Layer */
#include "H5VLnative_private.h" /* Native VOL connector */
/*-------------------------------------------------------------------------
* Function: H5VL__native_link_create
*
* Purpose: Handles the link create callback
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5VL__native_link_create(H5VL_link_create_type_t create_type, void *obj, const H5VL_loc_params_t *loc_params,
hid_t lcpl_id, hid_t H5_ATTR_UNUSED lapl_id, hid_t H5_ATTR_UNUSED dxpl_id,
void H5_ATTR_UNUSED **req, va_list arguments)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
switch (create_type) {
case H5VL_LINK_CREATE_HARD: {
H5G_loc_t cur_loc;
H5G_loc_t link_loc;
void * cur_obj = HDva_arg(arguments, void *);
H5VL_loc_params_t *cur_params = HDva_arg(arguments, H5VL_loc_params_t *);
if (NULL != cur_obj && H5G_loc_real(cur_obj, cur_params->obj_type, &cur_loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object")
if (NULL != obj && H5G_loc_real(obj, loc_params->obj_type, &link_loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object")
/* H5Lcreate_hard */
if (H5VL_OBJECT_BY_NAME == cur_params->type) {
H5G_loc_t *cur_loc_p, *link_loc_p;
/* Set up current & new location pointers */
cur_loc_p = &cur_loc;
link_loc_p = &link_loc;
if (NULL == cur_obj)
cur_loc_p = link_loc_p;
else if (NULL == obj)
link_loc_p = cur_loc_p;
else if (cur_loc_p->oloc->file != link_loc_p->oloc->file)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"source and destination should be in the same file.")
/* Create the link */
if ((ret_value =
H5L__create_hard(cur_loc_p, cur_params->loc_data.loc_by_name.name, link_loc_p,
loc_params->loc_data.loc_by_name.name, lcpl_id)) < 0)
HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create link")
} /* end if */
else { /* H5Olink */
/* Link to the object */
if (H5L_link(&link_loc, loc_params->loc_data.loc_by_name.name, &cur_loc, lcpl_id) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to create link")
} /* end else */
break;
}
case H5VL_LINK_CREATE_SOFT: {
char * target_name = HDva_arg(arguments, char *);
H5G_loc_t link_loc; /* Group location for new link */
if (H5G_loc_real(obj, loc_params->obj_type, &link_loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object")
/* Create the link */
if ((ret_value = H5L__create_soft(target_name, &link_loc, loc_params->loc_data.loc_by_name.name,
lcpl_id)) < 0)
HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create link")
break;
}
case H5VL_LINK_CREATE_UD: {
H5G_loc_t link_loc; /* Group location for new link */
H5L_type_t link_type = (H5L_type_t)HDva_arg(arguments, int);
void * udata = HDva_arg(arguments, void *);
size_t udata_size = HDva_arg(arguments, size_t);
if (H5G_loc_real(obj, loc_params->obj_type, &link_loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object")
/* Create link */
if (H5L__create_ud(&link_loc, loc_params->loc_data.loc_by_name.name, udata, udata_size, link_type,
lcpl_id) < 0)
HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create link")
break;
}
default:
HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "invalid link creation call")
} /* end switch */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5VL__native_link_create() */
/*-------------------------------------------------------------------------
* Function: H5VL__native_link_copy
*
* Purpose: Handles the link copy callback
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5VL__native_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 H5_ATTR_UNUSED lapl_id,
hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req)
{
H5G_loc_t src_loc, *src_loc_p;
H5G_loc_t dst_loc, *dst_loc_p;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
if (NULL != src_obj && 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 (NULL != dst_obj && 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")
/* Set up src & dst location pointers */
src_loc_p = &src_loc;
dst_loc_p = &dst_loc;
if (NULL == src_obj)
src_loc_p = dst_loc_p;
else if (NULL == dst_obj)
dst_loc_p = src_loc_p;
/* Copy the link */
if (H5L__move(src_loc_p, loc_params1->loc_data.loc_by_name.name, dst_loc_p,
loc_params2->loc_data.loc_by_name.name, TRUE, lcpl_id) < 0)
HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to copy link")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5VL__native_link_copy() */
/*-------------------------------------------------------------------------
* Function: H5VL__native_link_move
*
* Purpose: Handles the link move callback
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5VL__native_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 H5_ATTR_UNUSED lapl_id,
hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req)
{
H5G_loc_t src_loc, *src_loc_p;
H5G_loc_t dst_loc, *dst_loc_p;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
if (NULL != src_obj && 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 (NULL != dst_obj && 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")
/* Set up src & dst location pointers */
src_loc_p = &src_loc;
dst_loc_p = &dst_loc;
if (NULL == src_obj)
src_loc_p = dst_loc_p;
else if (NULL == dst_obj)
dst_loc_p = src_loc_p;
/* Move the link */
if (H5L__move(src_loc_p, loc_params1->loc_data.loc_by_name.name, dst_loc_p,
loc_params2->loc_data.loc_by_name.name, FALSE, lcpl_id) < 0)
HGOTO_ERROR(H5E_LINK, H5E_CANTMOVE, FAIL, "unable to move link")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5VL__native_link_move() */
/*-------------------------------------------------------------------------
* Function: H5VL__native_link_get
*
* Purpose: Handles the link get callback
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5VL__native_link_get(void *obj, const H5VL_loc_params_t *loc_params, H5VL_link_get_t get_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 (get_type) {
/* H5Lget_info/H5Lget_info_by_idx */
case H5VL_LINK_GET_INFO: {
H5L_info2_t *linfo2 = HDva_arg(arguments, H5L_info2_t *);
/* Get the link information */
if (loc_params->type == H5VL_OBJECT_BY_NAME) { /* H5Lget_info */
if (H5L_get_info(&loc, loc_params->loc_data.loc_by_name.name, linfo2) < 0)
HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to get link info")
} /* end if */
else if (loc_params->type == H5VL_OBJECT_BY_IDX) { /* H5Lget_info_by_idx */
if (H5L__get_info_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, linfo2) < 0)
HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to get link info")
} /* end else-if */
else
HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to get link info")
break;
}
/* H5Lget_name_by_idx */
case H5VL_LINK_GET_NAME: {
char * name = HDva_arg(arguments, char *);
size_t size = HDva_arg(arguments, size_t);
ssize_t *ret = HDva_arg(arguments, ssize_t *);
/* Get the link name */
if ((*ret = H5L__get_name_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, name, size)) < 0)
HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to get link info")
break;
}
/* H5Lget_val/H5Lget_val_by_idx */
case H5VL_LINK_GET_VAL: {
void * buf = HDva_arg(arguments, void *);
size_t size = HDva_arg(arguments, size_t);
/* Get the link information */
if (loc_params->type == H5VL_OBJECT_BY_NAME) { /* H5Lget_val */
if (H5L__get_val(&loc, loc_params->loc_data.loc_by_name.name, buf, size) < 0)
HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to get link value")
}
else if (loc_params->type == H5VL_OBJECT_BY_IDX) { /* H5Lget_val_by_idx */
if (H5L__get_val_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, buf, size) < 0)
HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to get link val")
}
else
HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to get link val")
break;
}
default:
HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't get this type of information from link")
} /* end switch */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5VL__native_link_get() */
/*-------------------------------------------------------------------------
* Function: H5VL__native_link_specific
*
* Purpose: Handles the link specific callback
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5VL__native_link_specific(void *obj, const H5VL_loc_params_t *loc_params, H5VL_link_specific_t specific_type,
hid_t H5_ATTR_UNUSED dxpl_id, void H5_ATTR_UNUSED **req, va_list arguments)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
switch (specific_type) {
case H5VL_LINK_EXISTS: {
hbool_t * exists = HDva_arg(arguments, hbool_t *);
H5G_loc_t loc;
if (H5G_loc_real(obj, loc_params->obj_type, &loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object")
/* Check for the existence of the link */
if (H5L__exists(&loc, loc_params->loc_data.loc_by_name.name, exists) < 0)
HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to specific link info")
break;
}
case H5VL_LINK_ITER: {
H5G_loc_t loc;
hbool_t recursive = (hbool_t)HDva_arg(arguments, unsigned);
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 */
hsize_t * idx_p = HDva_arg(arguments, hsize_t *);
H5L_iterate2_t op = HDva_arg(arguments, H5L_iterate2_t);
void * op_data = HDva_arg(arguments, void *);
/* Get the location */
if (H5G_loc_real(obj, loc_params->obj_type, &loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
/* Visit or iterate over the links */
if (loc_params->type == H5VL_OBJECT_BY_SELF) {
if (recursive) {
/* H5Lvisit */
if ((ret_value = H5G_visit(&loc, ".", idx_type, order, op, op_data)) < 0)
HGOTO_ERROR(H5E_LINK, H5E_BADITER, FAIL, "link visitation failed")
} /* end if */
else {
/* H5Literate */
if ((ret_value = H5L_iterate(&loc, ".", idx_type, order, idx_p, op, op_data)) < 0)
HGOTO_ERROR(H5E_LINK, H5E_BADITER, FAIL, "error iterating over links")
} /* end else */
} /* end if */
else if (loc_params->type == H5VL_OBJECT_BY_NAME) {
if (recursive) {
/* H5Lvisit_by_name */
if ((ret_value = H5G_visit(&loc, loc_params->loc_data.loc_by_name.name, idx_type, order,
op, op_data)) < 0)
HGOTO_ERROR(H5E_LINK, H5E_BADITER, FAIL, "link visitation failed")
} /* end if */
else {
/* H5Literate_by_name */
if ((ret_value = H5L_iterate(&loc, loc_params->loc_data.loc_by_name.name, idx_type, order,
idx_p, op, op_data)) < 0)
HGOTO_ERROR(H5E_LINK, H5E_BADITER, FAIL, "error iterating over links")
} /* end else */
} /* end else-if */
else
HGOTO_ERROR(H5E_LINK, H5E_UNSUPPORTED, FAIL, "unknown link iterate params")
break;
}
case H5VL_LINK_DELETE: {
H5G_loc_t loc;
if (H5G_loc_real(obj, loc_params->obj_type, &loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object")
/* Unlink */
if (loc_params->type == H5VL_OBJECT_BY_NAME) { /* H5Ldelete */
if (H5L__delete(&loc, loc_params->loc_data.loc_by_name.name) < 0)
HGOTO_ERROR(H5E_LINK, H5E_CANTDELETE, FAIL, "unable to delete link")
} /* end if */
else if (loc_params->type == H5VL_OBJECT_BY_IDX) { /* H5Ldelete_by_idx */
if (H5L__delete_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) < 0)
HGOTO_ERROR(H5E_LINK, H5E_CANTDELETE, FAIL, "unable to delete link")
} /* end else-if */
else
HGOTO_ERROR(H5E_LINK, H5E_CANTDELETE, FAIL, "unable to delete link")
break;
}
default:
HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "invalid specific operation")
} /* end switch */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5VL__native_link_specific() */
|
