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574cb4e9425ba1ce8bf0a777caa6cf4e9d57ca4e
hdf5/src/H5Gint.c
Quincey Koziol ba087ce2b5 Clean up private / package / static namespace issues (function naming, which 
header file, FUNC_ENTER / LEAVE, etc).  Removed remaining personal email
addresses from library source code (still needs cleaned from other directories).
Misc. warning, style, and whitespace cleanup.
2020-08-22 14:00:44 -05:00

1359 lines
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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: H5Gint.c
* April 5 2007
* Quincey Koziol
*
* Purpose: General use, "internal" routines for groups.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5Gmodule.h" /* This source code file is part of the H5G module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5FOprivate.h" /* File objects */
#include "H5Gpkg.h" /* Groups */
#include "H5Iprivate.h" /* IDs */
#include "H5Lprivate.h" /* Links */
#include "H5MMprivate.h" /* Memory management */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/* User data for path traversal routine for "insertion file" routine */
typedef struct {
H5G_loc_t *loc; /* Pointer to the location for insertion */
} H5G_trav_ins_t;
/* User data for application-style iteration over links in a group */
typedef struct {
hid_t gid; /* The group ID for the application callback */
H5O_loc_t *link_loc; /* The object location for the link */
H5G_link_iterate_t lnk_op; /* Application callback */
void *op_data; /* Application's op data */
} H5G_iter_appcall_ud_t;
/* User data for recursive traversal over links from a group */
typedef struct {
hid_t gid; /* The group ID for the starting group */
H5G_loc_t *curr_loc; /* Location of starting group */
H5_index_t idx_type; /* Index to use */
H5_iter_order_t order; /* Iteration order within index */
H5SL_t *visited; /* Skip list for tracking visited nodes */
char *path; /* Path name of the link */
size_t curr_path_len; /* Current length of the path in the buffer */
size_t path_buf_size; /* Size of path buffer */
H5L_iterate2_t op; /* Application callback */
void *op_data; /* Application's op data */
} H5G_iter_visit_ud_t;
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
static herr_t H5G__open_oid(H5G_t *grp);
static herr_t H5G__visit_cb(const H5O_link_t *lnk, void *_udata);
/*********************/
/* Package Variables */
/*********************/
/* Declare a free list to manage the H5G_t struct */
H5FL_DEFINE(H5G_t);
H5FL_DEFINE(H5G_shared_t);
/* Declare the free list to manage H5_obj_t's */
H5FL_DEFINE(H5_obj_t);
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5G__create_named
*
* Purpose: Internal routine to create a new "named" group.
*
* Return: Success: Non-NULL, pointer to new group object.
*
* Failure: NULL
*
* Programmer: Quincey Koziol
* April 5, 2007
*
*-------------------------------------------------------------------------
*/
H5G_t *
H5G__create_named(const H5G_loc_t *loc, const char *name, hid_t lcpl_id,
hid_t gcpl_id)
{
H5O_obj_create_t ocrt_info; /* Information for object creation */
H5G_obj_create_t gcrt_info; /* Information for group creation */
H5G_t *ret_value = NULL; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
HDassert(loc);
HDassert(name && *name);
HDassert(lcpl_id != H5P_DEFAULT);
HDassert(gcpl_id != H5P_DEFAULT);
/* Set up group creation info */
gcrt_info.gcpl_id = gcpl_id;
gcrt_info.cache_type = H5G_NOTHING_CACHED;
HDmemset(&gcrt_info.cache, 0, sizeof(gcrt_info.cache));
/* Set up object creation information */
ocrt_info.obj_type = H5O_TYPE_GROUP;
ocrt_info.crt_info = &gcrt_info;
ocrt_info.new_obj = NULL;
/* Create the new group and link it to its parent group */
if(H5L_link_object(loc, name, &ocrt_info, lcpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, NULL, "unable to create and link to group")
HDassert(ocrt_info.new_obj);
/* Set the return value */
ret_value = (H5G_t *)ocrt_info.new_obj;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__create_named() */
/*-------------------------------------------------------------------------
* Function: H5G__create
*
* Purpose: Creates a new empty group with the specified name. The name
* is either an absolute name or is relative to LOC.
*
* Return: Success: A handle for the group. The group is opened
* and should eventually be close by calling
* H5G_close().
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Aug 11 1997
*
*-------------------------------------------------------------------------
*/
H5G_t *
H5G__create(H5F_t *file, H5G_obj_create_t *gcrt_info)
{
H5G_t *grp = NULL; /*new group */
unsigned oloc_init = 0; /* Flag to indicate that the group object location was created successfully */
H5G_t *ret_value = NULL; /* Return value */
FUNC_ENTER_PACKAGE
/* check args */
HDassert(file);
HDassert(gcrt_info->gcpl_id != H5P_DEFAULT);
/* create an open group */
if(NULL == (grp = H5FL_CALLOC(H5G_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
if(NULL == (grp->shared = H5FL_CALLOC(H5G_shared_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
/* Create the group object header */
if(H5G__obj_create(file, gcrt_info, &(grp->oloc)/*out*/) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, NULL, "unable to create group object header")
oloc_init = 1; /* Indicate that the object location information is valid */
/* Add group to list of open objects in file */
if(H5FO_top_incr(grp->oloc.file, grp->oloc.addr) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINC, NULL, "can't incr object ref. count")
if(H5FO_insert(grp->oloc.file, grp->oloc.addr, grp->shared, TRUE) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, NULL, "can't insert group into list of open objects")
/* Set the count of times the object is opened */
grp->shared->fo_count = 1;
/* Set return value */
ret_value = grp;
done:
if(ret_value == NULL) {
/* Check if we need to release the file-oriented symbol table info */
if(oloc_init) {
if(H5O_dec_rc_by_loc(&(grp->oloc)) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTDEC, NULL, "unable to decrement refcount on newly created object")
if(H5O_close(&(grp->oloc), NULL) < 0)
HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, NULL, "unable to release object header")
if(H5O_delete(file, grp->oloc.addr) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTDELETE, NULL, "unable to delete object header")
} /* end if */
if(grp != NULL) {
if(grp->shared != NULL)
grp->shared = H5FL_FREE(H5G_shared_t, grp->shared);
grp = H5FL_FREE(H5G_t, grp);
} /* end if */
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__create() */
/*-------------------------------------------------------------------------
* Function: H5G__open_name
*
* Purpose: Opens an existing group by name.
*
* Return: Success: Ptr to a new group.
* Failure: NULL
*
* Programmer: Quincey Koziol
* Monday, August 27, 2007
*
*-------------------------------------------------------------------------
*/
H5G_t *
H5G__open_name(const H5G_loc_t *loc, const char *name)
{
H5G_t *grp = NULL; /* Group to open */
H5G_loc_t grp_loc; /* Location used to open group */
H5G_name_t grp_path; /* Opened object group hier. path */
H5O_loc_t grp_oloc; /* Opened object object location */
hbool_t loc_found = FALSE; /* Location at 'name' found */
H5O_type_t obj_type; /* Type of object at location */
H5G_t *ret_value = NULL; /* Return value */
FUNC_ENTER_PACKAGE
/* Check args */
HDassert(loc);
HDassert(name);
/* Set up opened group location to fill in */
grp_loc.oloc = &grp_oloc;
grp_loc.path = &grp_path;
H5G_loc_reset(&grp_loc);
/* Find the group object */
if(H5G_loc_find(loc, name, &grp_loc/*out*/) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, NULL, "group not found")
loc_found = TRUE;
/* Check that the object found is the correct type */
if(H5O_obj_type(&grp_oloc, &obj_type) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, NULL, "can't get object type")
if(obj_type != H5O_TYPE_GROUP)
HGOTO_ERROR(H5E_SYM, H5E_BADTYPE, NULL, "not a group")
/* Open the group */
if(NULL == (grp = H5G_open(&grp_loc)))
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, NULL, "unable to open group")
/* Set return value */
ret_value = grp;
done:
if(!ret_value)
if(loc_found && H5G_loc_free(&grp_loc) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, NULL, "can't free location")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__open_name() */
/*-------------------------------------------------------------------------
* Function: H5G_open
*
* Purpose: Opens an existing group. The group should eventually be
* closed by calling H5G_close().
*
* Return: Success: Ptr to a new group.
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Monday, January 5, 1998
*
*-------------------------------------------------------------------------
*/
H5G_t *
H5G_open(const H5G_loc_t *loc)
{
H5G_t *grp = NULL; /* Group opened */
H5G_shared_t *shared_fo; /* Shared group object */
H5G_t *ret_value = NULL; /* Return value */
FUNC_ENTER_NOAPI(NULL)
/* Check args */
HDassert(loc);
/* Allocate the group structure */
if(NULL == (grp = H5FL_CALLOC(H5G_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate space for group")
/* Shallow copy (take ownership) of the group location object */
if(H5O_loc_copy_shallow(&(grp->oloc), loc->oloc) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, NULL, "can't copy object location")
if(H5G_name_copy(&(grp->path), loc->path, H5_COPY_SHALLOW) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, NULL, "can't copy path")
/* Check if group was already open */
if((shared_fo = (H5G_shared_t *)H5FO_opened(grp->oloc.file, grp->oloc.addr)) == NULL) {
/* Clear any errors from H5FO_opened() */
H5E_clear_stack(NULL);
/* Open the group object */
if(H5G__open_oid(grp) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, NULL, "not found")
/* Add group to list of open objects in file */
if(H5FO_insert(grp->oloc.file, grp->oloc.addr, grp->shared, FALSE) < 0) {
grp->shared = H5FL_FREE(H5G_shared_t, grp->shared);
HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, NULL, "can't insert group into list of open objects")
} /* end if */
/* Increment object count for the object in the top file */
if(H5FO_top_incr(grp->oloc.file, grp->oloc.addr) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINC, NULL, "can't increment object count")
/* Set open object count */
grp->shared->fo_count = 1;
} /* end if */
else {
/* Point to shared group info */
grp->shared = shared_fo;
/* Increment shared reference count */
shared_fo->fo_count++;
/* Check if the object has been opened through the top file yet */
if(H5FO_top_count(grp->oloc.file, grp->oloc.addr) == 0) {
/* Open the object through this top file */
if(H5O_open(&(grp->oloc)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, NULL, "unable to open object header")
} /* end if */
/* Increment object count for the object in the top file */
if(H5FO_top_incr(grp->oloc.file, grp->oloc.addr) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINC, NULL, "can't increment object count")
} /* end else */
/* Set return value */
ret_value = grp;
done:
if(!ret_value && grp) {
H5O_loc_free(&(grp->oloc));
H5G_name_free(&(grp->path));
grp = H5FL_FREE(H5G_t, grp);
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_open() */
/*-------------------------------------------------------------------------
* Function: H5G__open_oid
*
* Purpose: Opens an existing group. The group should eventually be
* closed by calling H5G_close().
*
* Return: Success: Ptr to a new group.
*
* Failure: NULL
*
* Programmer: Quincey Koziol
* Wednesday, March 17, 1999
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G__open_oid(H5G_t *grp)
{
hbool_t obj_opened = FALSE;
herr_t ret_value = SUCCEED;
FUNC_ENTER_STATIC
/* Check args */
HDassert(grp);
/* Allocate the shared information for the group */
if(NULL == (grp->shared = H5FL_CALLOC(H5G_shared_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
/* Grab the object header */
if(H5O_open(&(grp->oloc)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open group")
obj_opened = TRUE;
/* Check if this object has the right message(s) to be treated as a group */
if((H5O_msg_exists(&(grp->oloc), H5O_STAB_ID) <= 0)
&& (H5O_msg_exists(&(grp->oloc), H5O_LINFO_ID) <= 0))
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "not a group")
done:
if(ret_value < 0) {
if(obj_opened)
H5O_close(&(grp->oloc), NULL);
if(grp->shared)
grp->shared = H5FL_FREE(H5G_shared_t, grp->shared);
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__open_oid() */
/*-------------------------------------------------------------------------
* Function: H5G_close
*
* Purpose: Closes the specified group.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Monday, January 5, 1998
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_close(H5G_t *grp)
{
hbool_t corked; /* Whether the group is corked or not */
hbool_t file_closed = TRUE; /* H5O_close also closed the file? */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* Check args */
HDassert(grp && grp->shared);
HDassert(grp->shared->fo_count > 0);
--grp->shared->fo_count;
if(0 == grp->shared->fo_count) {
HDassert(grp != H5G_rootof(H5G_fileof(grp)));
/* Uncork cache entries with object address tag */
if(H5AC_cork(grp->oloc.file, grp->oloc.addr, H5AC__GET_CORKED, &corked) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "unable to retrieve an object's cork status")
if(corked)
if(H5AC_cork(grp->oloc.file, grp->oloc.addr, H5AC__UNCORK, NULL) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTUNCORK, FAIL, "unable to uncork an object")
/* Remove the group from the list of opened objects in the file */
if(H5FO_top_decr(grp->oloc.file, grp->oloc.addr) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "can't decrement count for object")
if(H5FO_delete(grp->oloc.file, grp->oloc.addr) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "can't remove group from list of open objects")
if(H5O_close(&(grp->oloc), &file_closed) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to close")
/* Evict group metadata if evicting on close */
if(!file_closed && H5F_SHARED(grp->oloc.file) && H5F_EVICT_ON_CLOSE(grp->oloc.file)) {
if(H5AC_flush_tagged_metadata(grp->oloc.file, grp->oloc.addr) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush tagged metadata")
if(H5AC_evict_tagged_metadata(grp->oloc.file, grp->oloc.addr, FALSE) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to evict tagged metadata")
} /* end if */
/* Free memory */
grp->shared = H5FL_FREE(H5G_shared_t, grp->shared);
} else {
/* Decrement the ref. count for this object in the top file */
if(H5FO_top_decr(grp->oloc.file, grp->oloc.addr) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "can't decrement count for object")
/* Check reference count for this object in the top file */
if(H5FO_top_count(grp->oloc.file, grp->oloc.addr) == 0) {
if(H5O_close(&(grp->oloc), NULL) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to close")
} /* end if */
else
/* Free object location (i.e. "unhold" the file if appropriate) */
if(H5O_loc_free(&(grp->oloc)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "problem attempting to free location")
/* If this group is a mount point and the mount point is the last open
* reference to the group (i.e. fo_count == 1 now), then attempt to
* close down the file hierarchy
*/
if(grp->shared->mounted && grp->shared->fo_count == 1) {
/* Attempt to close down the file hierarchy */
if(H5F_try_close(grp->oloc.file, NULL) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "problem attempting file close")
} /* end if */
} /* end else */
if(H5G_name_free(&(grp->path)) < 0) {
grp = H5FL_FREE(H5G_t, grp);
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't free group entry name")
} /* end if */
grp = H5FL_FREE(H5G_t, grp);
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_close() */
/*-------------------------------------------------------------------------
* Function: H5G_oloc
*
* Purpose: Returns a pointer to the object location for a group.
*
* Return: Success: Ptr to group entry
* Failure: NULL
*
* Programmer: Robb Matzke
* Tuesday, March 24, 1998
*
*-------------------------------------------------------------------------
*/
H5O_loc_t *
H5G_oloc(H5G_t *grp)
{
/* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
FUNC_ENTER_NOAPI_NOINIT_NOERR
FUNC_LEAVE_NOAPI(grp ? &(grp->oloc) : NULL)
} /* end H5G_oloc() */
/*-------------------------------------------------------------------------
* Function: H5G_nameof
*
* Purpose: Returns a pointer to the hier. name for a group.
*
* Return: Success: Ptr to hier. name
* Failure: NULL
*
* Programmer: Quincey Koziol
* Monday, September 12, 2005
*
*-------------------------------------------------------------------------
*/
H5G_name_t *
H5G_nameof(const H5G_t *grp)
{
/* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
FUNC_ENTER_NOAPI_NOINIT_NOERR
FUNC_LEAVE_NOAPI(grp ? &(grp->path) : NULL)
} /* end H5G_nameof() */
/*-------------------------------------------------------------------------
* Function: H5G_fileof
*
* Purpose: Returns the file to which the specified group belongs.
*
* Return: Success: File pointer.
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Tuesday, March 24, 1998
*
*-------------------------------------------------------------------------
*/
H5F_t *
H5G_fileof(H5G_t *grp)
{
/* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
FUNC_ENTER_NOAPI_NOINIT_NOERR
HDassert(grp);
FUNC_LEAVE_NOAPI(grp->oloc.file)
} /* end H5G_fileof() */
/*-------------------------------------------------------------------------
* Function: H5G_get_shared_count
*
* Purpose: Queries the group object's "shared count"
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, July 5, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_get_shared_count(H5G_t *grp)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Check args */
HDassert(grp && grp->shared);
FUNC_LEAVE_NOAPI(grp->shared->fo_count)
} /* end H5G_get_shared_count() */
/*-------------------------------------------------------------------------
* Function: H5G_mount
*
* Purpose: Sets the 'mounted' flag for a group
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, July 19, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_mount(H5G_t *grp)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Check args */
HDassert(grp && grp->shared);
HDassert(grp->shared->mounted == FALSE);
/* Set the 'mounted' flag */
grp->shared->mounted = TRUE;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5G_mount() */
/*-------------------------------------------------------------------------
* Function: H5G_mounted
*
* Purpose: Retrieves the 'mounted' flag for a group
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, July 15, 2008
*
*-------------------------------------------------------------------------
*/
hbool_t
H5G_mounted(H5G_t *grp)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Check args */
HDassert(grp && grp->shared);
FUNC_LEAVE_NOAPI(grp->shared->mounted)
} /* end H5G_mounted() */
/*-------------------------------------------------------------------------
* Function: H5G_unmount
*
* Purpose: Resets the 'mounted' flag for a group
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, July 19, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_unmount(H5G_t *grp)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Check args */
HDassert(grp && grp->shared);
HDassert(grp->shared->mounted == TRUE);
/* Reset the 'mounted' flag */
grp->shared->mounted = FALSE;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5G_unmount() */
/*-------------------------------------------------------------------------
* Function: H5G__iterate_cb
*
* Purpose: Callback function for iterating over links in a group
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* Oct 3, 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G__iterate_cb(const H5O_link_t *lnk, void *_udata)
{
H5G_iter_appcall_ud_t *udata = (H5G_iter_appcall_ud_t *)_udata; /* User data for callback */
herr_t ret_value = H5_ITER_ERROR; /* Return value */
FUNC_ENTER_STATIC
/* Sanity check */
HDassert(lnk);
HDassert(udata);
switch(udata->lnk_op.op_type) {
#ifndef H5_NO_DEPRECATED_SYMBOLS
case H5G_LINK_OP_OLD:
/* Make the old-type application callback */
ret_value = (udata->lnk_op.op_func.op_old)(udata->gid, lnk->name, udata->op_data);
break;
#endif /* H5_NO_DEPRECATED_SYMBOLS */
case H5G_LINK_OP_NEW:
{
H5L_info2_t info; /* Link info */
/* Retrieve the info for the link */
if(H5G_link_to_info(udata->link_loc, lnk, &info) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5_ITER_ERROR, "unable to get info for link")
/* Make the application callback */
ret_value = (udata->lnk_op.op_func.op_new)(udata->gid, lnk->name, &info, udata->op_data);
}
break;
default:
HDassert(0 && "Unknown link op type?!?");
} /* end switch */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__iterate_cb() */
/*-------------------------------------------------------------------------
* Function: H5G_iterate
*
* Purpose: Private function for iterating over links in a group
*
* Return: SUCCEED/FAIL
*
* Programmer: Quincey Koziol
* Oct 3, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_iterate(H5G_loc_t *loc, const char *group_name,
H5_index_t idx_type, H5_iter_order_t order, hsize_t skip, hsize_t *last_lnk,
const H5G_link_iterate_t *lnk_op, void *op_data)
{
hid_t gid = H5I_INVALID_HID; /* ID of group to iterate over */
H5G_t *grp = NULL; /* Pointer to group data structure to iterate over */
H5G_iter_appcall_ud_t udata; /* User data for callback */
herr_t ret_value = FAIL; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* Sanity check */
HDassert(loc);
HDassert(group_name);
HDassert(last_lnk);
HDassert(lnk_op && lnk_op->op_func.op_new);
/* Open the group on which to operate. We also create a group ID which
* we can pass to the application-defined operator.
*/
if(NULL == (grp = H5G__open_name(loc, group_name)))
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open group")
if((gid = H5VL_wrap_register(H5I_GROUP, grp, TRUE)) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register group")
/* Set up user data for callback */
udata.gid = gid;
udata.link_loc = &grp->oloc;
udata.lnk_op = *lnk_op;
udata.op_data = op_data;
/* Call the real group iteration routine */
if((ret_value = H5G__obj_iterate(&(grp->oloc), idx_type, order, skip, last_lnk, H5G__iterate_cb, &udata)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_BADITER, FAIL, "error iterating over links")
done:
/* Release the group opened */
if(gid != H5I_INVALID_HID) {
if(H5I_dec_app_ref(gid) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "unable to close group")
}
else if(grp && H5G_close(grp) < 0)
HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "unable to release group")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_iterate() */
/*-------------------------------------------------------------------------
* Function: H5G__free_visit_visited
*
* Purpose: Free the key for an object visited during a group traversal
*
* Return: Non-negative on success, negative on failure
*
* Programmer: Quincey Koziol
* Nov 4, 2007
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G__free_visit_visited(void *item, void H5_ATTR_UNUSED *key, void H5_ATTR_UNUSED *operator_data/*in,out*/)
{
FUNC_ENTER_STATIC_NOERR
item = H5FL_FREE(H5_obj_t, item);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5G__free_visit_visited() */
/*-------------------------------------------------------------------------
* Function: H5G__visit_cb
*
* Purpose: Callback function for recursively visiting links from a group
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* Nov 4, 2007
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G__visit_cb(const H5O_link_t *lnk, void *_udata)
{
H5G_iter_visit_ud_t *udata = (H5G_iter_visit_ud_t *)_udata; /* User data for callback */
H5L_info2_t info; /* Link info */
H5G_loc_t obj_loc; /* Location of object */
H5G_name_t obj_path; /* Object's group hier. path */
H5O_loc_t obj_oloc; /* Object's object location */
hbool_t obj_found = FALSE; /* Object at 'name' found */
size_t old_path_len = udata->curr_path_len; /* Length of path before appending this link's name */
size_t link_name_len; /* Length of link's name */
size_t len_needed; /* Length of path string needed */
herr_t ret_value = H5_ITER_CONT; /* Return value */
FUNC_ENTER_STATIC
/* Sanity check */
HDassert(lnk);
HDassert(udata);
/* Check if we will need more space to store this link's relative path */
/* ("+2" is for string terminator and possible '/' for group separator later) */
link_name_len = HDstrlen(lnk->name);
len_needed = udata->curr_path_len + link_name_len + 2;
if(len_needed > udata->path_buf_size) {
void *new_path; /* Pointer to new path buffer */
/* Attempt to allocate larger buffer for path */
if(NULL == (new_path = H5MM_realloc(udata->path, len_needed)))
HGOTO_ERROR(H5E_SYM, H5E_NOSPACE, H5_ITER_ERROR, "can't allocate path string")
udata->path = (char *)new_path;
udata->path_buf_size = len_needed;
} /* end if */
/* Build the link's relative path name */
HDassert(udata->path[old_path_len] == '\0');
HDstrncpy(&(udata->path[old_path_len]), lnk->name, link_name_len + 1);
udata->curr_path_len += link_name_len;
/* Construct the link info from the link message */
if(H5G_link_to_info(udata->curr_loc->oloc, lnk, &info) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5_ITER_ERROR, "unable to get info for link")
/* Make the application callback */
ret_value = (udata->op)(udata->gid, udata->path, &info, udata->op_data);
/* Check for doing more work */
if(ret_value == H5_ITER_CONT && lnk->type == H5L_TYPE_HARD) {
H5_obj_t obj_pos; /* Object "position" for this object */
/* 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 using the LAPL passed in */
/* (Correctly handles mounted files) */
if(H5G_loc_find(udata->curr_loc, lnk->name, &obj_loc/*out*/) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, H5_ITER_ERROR, "object not found")
obj_found = TRUE;
/* Construct unique "position" for this object */
H5F_GET_FILENO(obj_oloc.file, obj_pos.fileno);
obj_pos.addr = obj_oloc.addr;
/* Check if we've seen the object the link references before */
if(NULL == H5SL_search(udata->visited, &obj_pos)) {
H5O_type_t otype; /* Basic object type (group, dataset, etc.) */
unsigned rc; /* Reference count of object */
/* Get the object's reference count and type */
if(H5O_get_rc_and_type(&obj_oloc, &rc, &otype) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5_ITER_ERROR, "unable to get object info")
/* If its ref count is > 1, we add it to the list of visited objects */
/* (because it could come up again during traversal) */
if(rc > 1) {
H5_obj_t *new_node; /* New object node for visited list */
/* Allocate new object "position" node */
if((new_node = H5FL_MALLOC(H5_obj_t)) == NULL)
HGOTO_ERROR(H5E_SYM, H5E_NOSPACE, H5_ITER_ERROR, "can't allocate object node")
/* Set node information */
*new_node = obj_pos;
/* Add to list of visited objects */
if(H5SL_insert(udata->visited, new_node, new_node) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, H5_ITER_ERROR, "can't insert object node into visited list")
} /* end if */
/* If it's a group, we recurse into it */
if(otype == H5O_TYPE_GROUP) {
H5G_loc_t *old_loc = udata->curr_loc; /* Pointer to previous group location info */
H5_index_t idx_type = udata->idx_type; /* Type of index to use */
H5O_linfo_t linfo; /* Link info message */
htri_t linfo_exists; /* Whether the link info message exists */
/* Add the path separator to the current path */
HDassert(udata->path[udata->curr_path_len] == '\0');
HDstrncpy(&(udata->path[udata->curr_path_len]), "/", (size_t)2);
udata->curr_path_len++;
/* Attempt to get the link info for this group */
if((linfo_exists = H5G__obj_get_linfo(&obj_oloc, &linfo)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5_ITER_ERROR, "can't check for link info message")
if(linfo_exists) {
/* Check for creation order tracking, if creation order index lookup requested */
if(idx_type == H5_INDEX_CRT_ORDER) {
/* Check if creation order is tracked */
if(!linfo.track_corder)
/* Switch to name order for this group */
idx_type = H5_INDEX_NAME;
} /* end if */
else
HDassert(idx_type == H5_INDEX_NAME);
} /* end if */
else {
/* Can only perform name lookups on groups with symbol tables */
if(idx_type != H5_INDEX_NAME)
/* Switch to name order for this group */
idx_type = H5_INDEX_NAME;
} /* end if */
/* Point to this group's location info */
udata->curr_loc = &obj_loc;
/* Iterate over links in group */
ret_value = H5G__obj_iterate(&obj_oloc, idx_type, udata->order, (hsize_t)0, NULL, H5G__visit_cb, udata);
/* Restore location */
udata->curr_loc = old_loc;
} /* end if */
} /* end if */
} /* end if */
done:
/* Reset path back to incoming path */
udata->path[old_path_len] = '\0';
udata->curr_path_len = old_path_len;
/* Release resources */
if(obj_found && H5G_loc_free(&obj_loc) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, H5_ITER_ERROR, "can't free location")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__visit_cb() */
/*-------------------------------------------------------------------------
* Function: H5G_visit
*
* Purpose: Recursively visit all the links in a group and all
* the groups that are linked to from that group. Links within
* each group are visited according to the order within the
* specified index (unless the specified index does not exist for
* a particular group, then the "name" index is used).
*
* NOTE: Each _link_ reachable from the initial group will only be
* visited once. However, because an object may be reached from
* more than one link, the visitation may call the application's
* callback with more than one link that points to a particular
* _object_.
*
* Return: Success: The return value of the first operator that
* returns non-zero, or zero if all members were
* processed with no operator returning non-zero.
*
* Failure: Negative if something goes wrong within the
* library, or the negative value returned by one
* of the operators.
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_visit(H5G_loc_t *loc, const char *group_name, H5_index_t idx_type,
H5_iter_order_t order, H5L_iterate2_t op, void *op_data)
{
H5G_iter_visit_ud_t udata; /* User data for callback */
H5O_linfo_t linfo; /* Link info message */
htri_t linfo_exists; /* Whether the link info message exists */
hid_t gid = H5I_INVALID_HID; /* Group ID */
H5G_t *grp = NULL; /* Group opened */
H5G_loc_t start_loc; /* Location of starting group */
unsigned rc; /* Reference count of object */
herr_t ret_value = FAIL; /* Return value */
/* Portably clear udata struct (before FUNC_ENTER) */
HDmemset(&udata, 0, sizeof(udata));
FUNC_ENTER_NOAPI(FAIL)
/* Check args */
if(!loc)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "loc parameter cannot be NULL")
/* Open the group to begin visiting within */
if(NULL == (grp = H5G__open_name(loc, group_name)))
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open group")
/* Register an ID for the starting group */
if((gid = H5VL_wrap_register(H5I_GROUP, grp, TRUE)) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register group")
/* Get the location of the starting group */
if(H5G_loc(gid, &start_loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
/* Set up user data */
udata.gid = gid;
udata.curr_loc = &start_loc;
udata.idx_type = idx_type;
udata.order = order;
udata.op = op;
udata.op_data = op_data;
/* Allocate space for the path name */
if(NULL == (udata.path = H5MM_strdup("")))
HGOTO_ERROR(H5E_SYM, H5E_NOSPACE, FAIL, "can't allocate path name buffer")
udata.path_buf_size = 1;
udata.curr_path_len = 0;
/* Create skip list to store visited object information */
if((udata.visited = H5SL_create(H5SL_TYPE_OBJ, NULL)) == NULL)
HGOTO_ERROR(H5E_SYM, H5E_CANTCREATE, FAIL, "can't create skip list for visited objects")
/* Get the group's reference count */
if(H5O_get_rc_and_type(&grp->oloc, &rc, NULL) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "unable to get object info")
/* If its ref count is > 1, we add it to the list of visited objects */
/* (because it could come up again during traversal) */
if(rc > 1) {
H5_obj_t *obj_pos; /* New object node for visited list */
/* Allocate new object "position" node */
if((obj_pos = H5FL_MALLOC(H5_obj_t)) == NULL)
HGOTO_ERROR(H5E_SYM, H5E_NOSPACE, FAIL, "can't allocate object node")
/* Construct unique "position" for this object */
H5F_GET_FILENO(grp->oloc.file, obj_pos->fileno);
obj_pos->addr = grp->oloc.addr;
/* Add to list of visited objects */
if(H5SL_insert(udata.visited, obj_pos, obj_pos) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "can't insert object node into visited list")
} /* end if */
/* Attempt to get the link info for this group */
if((linfo_exists = H5G__obj_get_linfo(&(grp->oloc), &linfo)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "can't check for link info message")
if(linfo_exists) {
/* Check for creation order tracking, if creation order index lookup requested */
if(idx_type == H5_INDEX_CRT_ORDER) {
/* Check if creation order is tracked */
if(!linfo.track_corder)
/* Switch to name order for this group */
idx_type = H5_INDEX_NAME;
} /* end if */
else
HDassert(idx_type == H5_INDEX_NAME);
} /* end if */
else {
/* Can only perform name lookups on groups with symbol tables */
if(idx_type != H5_INDEX_NAME)
/* Switch to name order for this group */
idx_type = H5_INDEX_NAME;
} /* end if */
/* Call the link iteration routine */
if((ret_value = H5G__obj_iterate(&(grp->oloc), idx_type, order, (hsize_t)0, NULL, H5G__visit_cb, &udata)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_BADITER, FAIL, "can't visit links")
done:
/* Release user data resources */
H5MM_xfree(udata.path);
if(udata.visited)
H5SL_destroy(udata.visited, H5G__free_visit_visited, NULL);
/* Release the group opened */
if(gid != H5I_INVALID_HID) {
if(H5I_dec_app_ref(gid) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "unable to close group")
}
else if(grp && H5G_close(grp) < 0)
HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "unable to release group")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_visit() */
/*-------------------------------------------------------------------------
* Function: H5G_get_create_plist
*
* Purpose: Private function for H5Gget_create_plist
*
* Return: Success: ID for a copy of the group creation
* property list. The property list ID should be
* released by calling H5Pclose().
*
* Failure: H5I_INVALID_HID
*
* Programmer: Quincey Koziol
* Tuesday, October 25, 2005
*
*-------------------------------------------------------------------------
*/
hid_t
H5G_get_create_plist(const H5G_t *grp)
{
H5O_linfo_t linfo; /* Link info message */
htri_t ginfo_exists;
htri_t linfo_exists;
htri_t pline_exists;
H5P_genplist_t *gcpl_plist;
H5P_genplist_t *new_plist;
hid_t new_gcpl_id = H5I_INVALID_HID;
hid_t ret_value = H5I_INVALID_HID;
FUNC_ENTER_NOAPI(H5I_INVALID_HID)
/* Copy the default group creation property list */
if(NULL == (gcpl_plist = (H5P_genplist_t *)H5I_object(H5P_LST_GROUP_CREATE_ID_g)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "can't get default group creation property list")
if((new_gcpl_id = H5P_copy_plist(gcpl_plist, TRUE)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5I_INVALID_HID, "unable to copy the creation property list")
if(NULL == (new_plist = (H5P_genplist_t *)H5I_object(new_gcpl_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "can't get property list")
/* Retrieve any object creation properties */
if(H5O_get_create_plist(&grp->oloc, new_plist) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5I_INVALID_HID, "can't get object creation info")
/* Check for the group having a group info message */
if((ginfo_exists = H5O_msg_exists(&(grp->oloc), H5O_GINFO_ID)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, H5I_INVALID_HID, "unable to read object header")
if(ginfo_exists) {
H5O_ginfo_t ginfo; /* Group info message */
/* Read the group info */
if(NULL == H5O_msg_read(&(grp->oloc), H5O_GINFO_ID, &ginfo))
HGOTO_ERROR(H5E_SYM, H5E_BADMESG, H5I_INVALID_HID, "can't get group info")
/* Set the group info for the property list */
if(H5P_set(new_plist, H5G_CRT_GROUP_INFO_NAME, &ginfo) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set group info")
} /* end if */
/* Check for the group having a link info message */
if((linfo_exists = H5G__obj_get_linfo(&(grp->oloc), &linfo)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, H5I_INVALID_HID, "unable to read object header")
if(linfo_exists) {
/* Set the link info for the property list */
if(H5P_set(new_plist, H5G_CRT_LINK_INFO_NAME, &linfo) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set link info")
} /* end if */
/* Check for the group having a pipeline message */
if((pline_exists = H5O_msg_exists(&(grp->oloc), H5O_PLINE_ID)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5I_INVALID_HID, "unable to read object header")
if(pline_exists) {
H5O_pline_t pline; /* Pipeline message */
/* Read the pipeline */
if(NULL == H5O_msg_read(&(grp->oloc), H5O_PLINE_ID, &pline))
HGOTO_ERROR(H5E_SYM, H5E_BADMESG, H5I_INVALID_HID, "can't get link pipeline")
/* Set the pipeline for the property list */
if(H5P_poke(new_plist, H5O_CRT_PIPELINE_NAME, &pline) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set link pipeline")
} /* end if */
/* Set the return value */
ret_value = new_gcpl_id;
done:
if(ret_value < 0) {
if(new_gcpl_id > 0)
if(H5I_dec_app_ref(new_gcpl_id) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTDEC, H5I_INVALID_HID, "can't free")
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_get_create_plist() */
/*-------------------------------------------------------------------------
* Function: H5G__get_info_by_name
*
* Purpose: Internal routine to retrieve the info for a group, by name.
*
* Return: SUCCEED/FAIL
*
* Programmer: Quincey Koziol
* December 18, 2017
*
*-------------------------------------------------------------------------
*/
herr_t
H5G__get_info_by_name(const H5G_loc_t *loc, const char *name, H5G_info_t *grp_info)
{
H5G_loc_t grp_loc; /* Location used to open group */
H5G_name_t grp_path; /* Opened object group hier. path */
H5O_loc_t grp_oloc; /* Opened object object location */
hbool_t loc_found = FALSE; /* Location at 'name' found */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
HDassert(loc);
HDassert(grp_info);
/* Set up opened group location to fill in */
grp_loc.oloc = &grp_oloc;
grp_loc.path = &grp_path;
H5G_loc_reset(&grp_loc);
/* Find the group object */
if(H5G_loc_find(loc, name, &grp_loc/*out*/) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "group not found")
loc_found = TRUE;
/* Retrieve the group's information */
if(H5G__obj_info(grp_loc.oloc, grp_info/*out*/) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "can't retrieve group info")
done:
/* Clean up */
if(loc_found && H5G_loc_free(&grp_loc) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "can't free location")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__get_info_by_name() */
/*-------------------------------------------------------------------------
* Function: H5G__get_info_by_idx
*
* Purpose: Internal routine to retrieve the info for a group, by index.
*
* Return: SUCCEED/FAIL
*
* Programmer: Quincey Koziol
* December 18, 2017
*
*-------------------------------------------------------------------------
*/
herr_t
H5G__get_info_by_idx(const H5G_loc_t *loc, const char *group_name,
H5_index_t idx_type, H5_iter_order_t order, hsize_t n, H5G_info_t *grp_info)
{
H5G_loc_t grp_loc; /* Location used to open group */
H5G_name_t grp_path; /* Opened object group hier. path */
H5O_loc_t grp_oloc; /* Opened object object location */
hbool_t loc_found = FALSE; /* Location at 'name' found */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
HDassert(loc);
HDassert(grp_info);
/* Set up opened group location to fill in */
grp_loc.oloc = &grp_oloc;
grp_loc.path = &grp_path;
H5G_loc_reset(&grp_loc);
/* Find the object's location, according to the order in the index */
if(H5G_loc_find_by_idx(loc, group_name, idx_type, order, n, &grp_loc/*out*/) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "group not found")
loc_found = TRUE;
/* Retrieve the group's information */
if(H5G__obj_info(grp_loc.oloc, grp_info/*out*/) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "can't retrieve group info")
done:
/* Clean up */
if(loc_found && H5G_loc_free(&grp_loc) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "can't free location")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__get_info_by_idx() */
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