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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Gcompact.c
* Sep 5 2005
* Quincey Koziol <koziol@ncsa.uiuc.edu>
*
* Purpose: Functions for handling compact storage.
*
*-------------------------------------------------------------------------
*/
#include "H5Gmodule.h" /* This source code file is part of the H5G module */
/* Packages needed by this file... */
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Gpkg.h" /* Groups */
#include "H5MMprivate.h" /* Memory management */
/* Private typedefs */
/* User data for link message iteration when building link table */
typedef struct {
H5G_link_table_t *ltable; /* Pointer to link table to build */
size_t curr_lnk; /* Current link to operate on */
} H5G_iter_bt_t;
/* User data for deleting a link in the link messages */
typedef struct {
/* downward */
H5F_t *file; /* File that object header is located within */
hid_t dxpl_id; /* DXPL during insertion */
H5RS_str_t *grp_full_path_r;/* Full path for group of link */
const char *name; /* Link name to search for */
} H5G_iter_rm_t;
/* User data for link message iteration when querying link info */
typedef struct {
/* downward */
const char *name; /* Name to search for */
/* upward */
H5O_link_t *lnk; /* Link struct to fill in */
hbool_t found; /* Flag to indicate that the object was found */
} H5G_iter_lkp_t;
/* Private macros */
/* PRIVATE PROTOTYPES */
static herr_t H5G_compact_build_table_cb(const void *_mesg, unsigned idx, void *_udata);
static herr_t H5G_compact_build_table(const H5O_loc_t *oloc, hid_t dxpl_id,
const H5O_linfo_t *linfo, H5_index_t idx_type, H5_iter_order_t order,
H5G_link_table_t *ltable);
/*-------------------------------------------------------------------------
* Function: H5G_compact_build_table_cb
*
* Purpose: Callback routine for searching 'link' messages for a particular
* name.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Sep 5 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_compact_build_table_cb(const void *_mesg, unsigned H5_ATTR_UNUSED idx, void *_udata)
{
const H5O_link_t *lnk = (const H5O_link_t *)_mesg; /* Pointer to link */
H5G_iter_bt_t *udata = (H5G_iter_bt_t *)_udata; /* 'User data' passed in */
herr_t ret_value=H5_ITER_CONT; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
/* check arguments */
HDassert(lnk);
HDassert(udata);
HDassert(udata->curr_lnk < udata->ltable->nlinks);
/* Copy link message into table */
if(NULL == H5O_msg_copy(H5O_LINK_ID, lnk, &(udata->ltable->lnks[udata->curr_lnk])))
HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, H5_ITER_ERROR, "can't copy link message")
/* Increment current link entry to operate on */
udata->curr_lnk++;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_compact_build_table_cb() */
/*-------------------------------------------------------------------------
* Function: H5G_compact_build_table
*
* Purpose: Builds a table containing a sorted (alphabetically) list of
* links for a group
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* Sep 6, 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_compact_build_table(const H5O_loc_t *oloc, hid_t dxpl_id, const H5O_linfo_t *linfo,
H5_index_t idx_type, H5_iter_order_t order, H5G_link_table_t *ltable)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
/* Sanity check */
HDassert(oloc);
HDassert(linfo);
HDassert(ltable);
/* Set size of table */
H5_CHECK_OVERFLOW(linfo->nlinks, hsize_t, size_t);
ltable->nlinks = (size_t)linfo->nlinks;
/* Allocate space for the table entries */
if(ltable->nlinks > 0) {
H5G_iter_bt_t udata; /* User data for iteration callback */
H5O_mesg_operator_t op; /* Message operator */
/* Allocate the link table */
if((ltable->lnks = (H5O_link_t *)H5MM_malloc(sizeof(H5O_link_t) * ltable->nlinks)) == NULL)
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
/* Set up user data for iteration */
udata.ltable = ltable;
udata.curr_lnk = 0;
/* Iterate through the link messages, adding them to the table */
op.op_type = H5O_MESG_OP_APP;
op.u.app_op = H5G_compact_build_table_cb;
if(H5O_msg_iterate(oloc, H5O_LINK_ID, &op, &udata, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "error iterating over link messages")
/* Sort link table in correct iteration order */
if(H5G__link_sort_table(ltable, idx_type, order) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTSORT, FAIL, "error sorting link messages")
} /* end if */
else
ltable->lnks = NULL;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_compact_build_table() */
/*-------------------------------------------------------------------------
* Function: H5G__compact_insert
*
* Purpose: Insert a new symbol into the table described by GRP_ENT in
* file F. The name of the new symbol is NAME and its symbol
* table entry is OBJ_ENT.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Sep 6 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G__compact_insert(const H5O_loc_t *grp_oloc, H5O_link_t *obj_lnk,
hid_t dxpl_id)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* check arguments */
HDassert(grp_oloc && grp_oloc->file);
HDassert(obj_lnk);
/* Insert link message into group */
if(H5O_msg_create(grp_oloc, H5O_LINK_ID, 0, H5O_UPDATE_TIME, obj_lnk, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create message")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__compact_insert() */
/*-------------------------------------------------------------------------
* Function: H5G__compact_get_name_by_idx
*
* Purpose: Returns the name of objects in the group by giving index.
*
* Return: Success: Non-negative, length of name
* Failure: Negative
*
* Programmer: Quincey Koziol
* Sep 6, 2005
*
*-------------------------------------------------------------------------
*/
ssize_t
H5G__compact_get_name_by_idx(const H5O_loc_t *oloc, hid_t dxpl_id,
const H5O_linfo_t *linfo, H5_index_t idx_type, H5_iter_order_t order,
hsize_t idx, char* name, size_t size)
{
H5G_link_table_t ltable = {0, NULL}; /* Link table */
ssize_t ret_value = -1; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
HDassert(oloc);
/* Build table of all link messages */
if(H5G_compact_build_table(oloc, dxpl_id, linfo, idx_type, order, <able) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create link message table")
/* Check for going out of bounds */
if(idx >= ltable.nlinks)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "index out of bound")
/* Get the length of the name */
ret_value = (ssize_t)HDstrlen(ltable.lnks[idx].name);
/* Copy the name into the user's buffer, if given */
if(name) {
HDstrncpy(name, ltable.lnks[idx].name, MIN((size_t)(ret_value + 1), size));
if((size_t)ret_value >= size)
name[size - 1]='\0';
} /* end if */
done:
/* Release link table */
if(ltable.lnks && H5G__link_release_table(<able) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__compact_get_name_by_idx() */
/*-------------------------------------------------------------------------
* Function: H5G_compact_remove_common_cb
*
* Purpose: Common callback routine for deleting 'link' message for a
* particular name.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Sep 5 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_compact_remove_common_cb(const void *_mesg, unsigned H5_ATTR_UNUSED idx, void *_udata)
{
const H5O_link_t *lnk = (const H5O_link_t *)_mesg; /* Pointer to link */
H5G_iter_rm_t *udata = (H5G_iter_rm_t *)_udata; /* 'User data' passed in */
herr_t ret_value = H5_ITER_CONT; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
/* check arguments */
HDassert(lnk);
HDassert(udata);
/* If we've found the right link, get the object type */
if(HDstrcmp(lnk->name, udata->name) == 0) {
/* Replace path names for link being removed */
if(H5G__link_name_replace(udata->file, udata->dxpl_id, udata->grp_full_path_r, lnk) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5_ITER_ERROR, "unable to get object type")
/* Stop the iteration, we found the correct link */
HGOTO_DONE(H5_ITER_STOP)
} /* end if */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_compact_remove_common_cb() */
/*-------------------------------------------------------------------------
* Function: H5G__compact_remove
*
* Purpose: Remove NAME from links.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Monday, September 19, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G__compact_remove(const H5O_loc_t *oloc, hid_t dxpl_id, H5RS_str_t *grp_full_path_r,
const char *name)
{
H5G_iter_rm_t udata; /* Data to pass through OH iteration */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
HDassert(oloc && oloc->file);
HDassert(name && *name);
/* Initialize data to pass through object header iteration */
udata.file = oloc->file;
udata.dxpl_id = dxpl_id;
udata.grp_full_path_r = grp_full_path_r;
udata.name = name;
/* Iterate over the link messages to delete the right one */
if(H5O_msg_remove_op(oloc, H5O_LINK_ID, H5O_FIRST, H5G_compact_remove_common_cb, &udata, TRUE, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete link message")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__compact_remove() */
/*-------------------------------------------------------------------------
* Function: H5G__compact_remove_by_idx
*
* Purpose: Remove link from group, according to an index order.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, November 14, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5G__compact_remove_by_idx(const H5O_loc_t *oloc, hid_t dxpl_id,
const H5O_linfo_t *linfo, H5RS_str_t *grp_full_path_r, H5_index_t idx_type,
H5_iter_order_t order, hsize_t n)
{
H5G_link_table_t ltable = {0, NULL};/* Link table */
H5G_iter_rm_t udata; /* Data to pass through OH iteration */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
HDassert(oloc && oloc->file);
HDassert(linfo);
/* Build table of all link messages, sorted according to desired order */
if(H5G_compact_build_table(oloc, dxpl_id, linfo, idx_type, order, <able) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create link message table")
/* Check for going out of bounds */
if(n >= ltable.nlinks)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "index out of bound")
/* Initialize data to pass through object header iteration */
udata.file = oloc->file;
udata.dxpl_id = dxpl_id;
udata.grp_full_path_r = grp_full_path_r;
udata.name = ltable.lnks[n].name;
/* Iterate over the link messages to delete the right one */
if(H5O_msg_remove_op(oloc, H5O_LINK_ID, H5O_FIRST, H5G_compact_remove_common_cb, &udata, TRUE, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete link message")
done:
/* Release link table */
if(ltable.lnks && H5G__link_release_table(<able) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__compact_remove_by_idx() */
/*-------------------------------------------------------------------------
* Function: H5G__compact_iterate
*
* Purpose: Iterate over the links in a group
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Monday, October 3, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G__compact_iterate(const H5O_loc_t *oloc, hid_t dxpl_id, const H5O_linfo_t *linfo,
H5_index_t idx_type, H5_iter_order_t order, hsize_t skip, hsize_t *last_lnk,
H5G_lib_iterate_t op, void *op_data)
{
H5G_link_table_t ltable = {0, NULL}; /* Link table */
herr_t ret_value = FAIL; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
HDassert(oloc);
HDassert(linfo);
HDassert(op);
/* Build table of all link messages */
if(H5G_compact_build_table(oloc, dxpl_id, linfo, idx_type, order, <able) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create link message table")
/* Iterate over links in table */
if((ret_value = H5G__link_iterate_table(<able, skip, last_lnk, op, op_data)) < 0)
HERROR(H5E_SYM, H5E_CANTNEXT, "iteration operator failed");
done:
/* Release link table */
if(ltable.lnks && H5G__link_release_table(<able) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__compact_iterate() */
/*-------------------------------------------------------------------------
* Function: H5G_compact_lookup_cb
*
* Purpose: Callback routine for searching 'link' messages for a particular
* name & gettting object location for it
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Sep 20 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_compact_lookup_cb(const void *_mesg, unsigned H5_ATTR_UNUSED idx, void *_udata)
{
const H5O_link_t *lnk = (const H5O_link_t *)_mesg; /* Pointer to link */
H5G_iter_lkp_t *udata = (H5G_iter_lkp_t *)_udata; /* 'User data' passed in */
herr_t ret_value = H5_ITER_CONT; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
/* check arguments */
HDassert(lnk);
HDassert(udata);
/* Check for name to get information */
if(HDstrcmp(lnk->name, udata->name) == 0) {
if(udata->lnk) {
/* Copy link information */
if(NULL == H5O_msg_copy(H5O_LINK_ID, lnk, udata->lnk))
HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, H5_ITER_ERROR, "can't copy link message")
} /* end if */
/* Indicate that the correct link was found */
udata->found = TRUE;
/* Stop iteration now */
HGOTO_DONE(H5_ITER_STOP)
} /* end if */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_compact_lookup_cb() */
/*-------------------------------------------------------------------------
* Function: H5G__compact_lookup
*
* Purpose: Look up an object relative to a group, using link messages.
*
* Return: Non-negative (TRUE/FALSE) on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Sep 20 2005
*
*-------------------------------------------------------------------------
*/
htri_t
H5G__compact_lookup(const H5O_loc_t *oloc, const char *name, H5O_link_t *lnk,
hid_t dxpl_id)
{
H5G_iter_lkp_t udata; /* User data for iteration callback */
H5O_mesg_operator_t op; /* Message operator */
htri_t ret_value = FAIL; /* Return value */
FUNC_ENTER_PACKAGE
/* check arguments */
HDassert(lnk && oloc->file);
HDassert(name && *name);
/* Set up user data for iteration */
udata.name = name;
udata.lnk = lnk;
udata.found = FALSE;
/* Iterate through the link messages, adding them to the table */
op.op_type = H5O_MESG_OP_APP;
op.u.app_op = H5G_compact_lookup_cb;
if(H5O_msg_iterate(oloc, H5O_LINK_ID, &op, &udata, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "error iterating over link messages")
/* Determine if we found the link we were looking for */
ret_value = (htri_t)udata.found;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__compact_lookup() */
/*-------------------------------------------------------------------------
* Function: H5G__compact_lookup_by_idx
*
* Purpose: Look up an object in a group using link messages,
* according to the order of an index
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* Nov 6 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5G__compact_lookup_by_idx(const H5O_loc_t *oloc, hid_t dxpl_id, const H5O_linfo_t *linfo,
H5_index_t idx_type, H5_iter_order_t order, hsize_t n, H5O_link_t *lnk)
{
H5G_link_table_t ltable = {0, NULL};/* Link table */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* check arguments */
HDassert(oloc && oloc->file);
HDassert(linfo);
HDassert(lnk);
/* Build table of all link messages, sorted according to desired order */
if(H5G_compact_build_table(oloc, dxpl_id, linfo, idx_type, order, <able) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create link message table")
/* Check for going out of bounds */
if(n >= ltable.nlinks)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "index out of bound")
/* Copy link information */
if(NULL == H5O_msg_copy(H5O_LINK_ID, <able.lnks[n], lnk))
HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, H5_ITER_ERROR, "can't copy link message")
done:
/* Release link table */
if(ltable.lnks && H5G__link_release_table(<able) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__compact_lookup_by_idx() */
#ifndef H5_NO_DEPRECATED_SYMBOLS
/*-------------------------------------------------------------------------
* Function: H5G__compact_get_type_by_idx
*
* Purpose: Returns the type of objects in the group by giving index.
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* Sep 12, 2005
*
*-------------------------------------------------------------------------
*/
H5G_obj_t
H5G__compact_get_type_by_idx(H5O_loc_t *oloc, hid_t dxpl_id, const H5O_linfo_t *linfo,
hsize_t idx)
{
H5G_link_table_t ltable = {0, NULL}; /* Link table */
H5G_obj_t ret_value = H5G_UNKNOWN; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
HDassert(oloc);
/* Build table of all link messages */
if(H5G_compact_build_table(oloc, dxpl_id, linfo, H5_INDEX_NAME, H5_ITER_INC, <able) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, H5G_UNKNOWN, "can't create link message table")
/* Check for going out of bounds */
if(idx >= ltable.nlinks)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, H5G_UNKNOWN, "index out of bound")
/* Determine type of object */
if(ltable.lnks[idx].type == H5L_TYPE_SOFT)
ret_value = H5G_LINK;
else if(ltable.lnks[idx].type >= H5L_TYPE_UD_MIN)
ret_value = H5G_UDLINK;
else if(ltable.lnks[idx].type == H5L_TYPE_HARD){
H5O_loc_t tmp_oloc; /* Temporary object location */
H5O_type_t obj_type; /* Type of object at location */
/* Build temporary object location */
tmp_oloc.file = oloc->file;
tmp_oloc.addr = ltable.lnks[idx].u.hard.addr;
/* Get the type of the object */
if(H5O_obj_type(&tmp_oloc, &obj_type, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5G_UNKNOWN, "can't get object type")
/* Map to group object type */
if(H5G_UNKNOWN == (ret_value = H5G_map_obj_type(obj_type)))
HGOTO_ERROR(H5E_SYM, H5E_BADTYPE, H5G_UNKNOWN, "can't determine object type")
} else {
HGOTO_ERROR(H5E_SYM, H5E_BADTYPE, H5G_UNKNOWN, "unknown link type")
} /* end else */
done:
/* Release link table */
if(ltable.lnks && H5G__link_release_table(<able) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTFREE, H5G_UNKNOWN, "unable to release link table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__compact_get_type_by_idx() */
#endif /* H5_NO_DEPRECATED_SYMBOLS */
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