/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /****************/ /* Module Setup */ /****************/ #include "H5Fmodule.h" /* This source code file is part of the H5F module */ /***********/ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ #include "H5Aprivate.h" /* Attributes */ #include "H5ACprivate.h" /* Metadata cache */ #include "H5CXprivate.h" /* API Contexts */ #include "H5Dprivate.h" /* Datasets */ #include "H5Eprivate.h" /* Error handling */ #include "H5Fpkg.h" /* File access */ #include "H5FDprivate.h" /* File drivers */ #include "H5Gprivate.h" /* Groups */ #include "H5Iprivate.h" /* IDs */ #include "H5Lprivate.h" /* Links */ #include "H5MFprivate.h" /* File memory management */ #include "H5MMprivate.h" /* Memory management */ #include "H5Pprivate.h" /* Property lists */ #include "H5SMprivate.h" /* Shared Object Header Messages */ #include "H5Tprivate.h" /* Datatypes */ #include "H5VLprivate.h" /* VOL plugins */ #include "H5VLnative_private.h" /* Native VOL plugin */ /****************/ /* Local Macros */ /****************/ /******************/ /* Local Typedefs */ /******************/ /* Struct only used by functions H5F__get_objects and H5F__get_objects_cb */ typedef struct H5F_olist_t { H5I_type_t obj_type; /* Type of object to look for */ hid_t *obj_id_list; /* Pointer to the list of open IDs to return */ size_t *obj_id_count; /* Number of open IDs */ struct { hbool_t local; /* Set flag for "local" file searches */ union { H5F_file_t *shared; /* Pointer to shared file to look inside */ const H5F_t *file; /* Pointer to file to look inside */ } ptr; } file_info; size_t list_index; /* Current index in open ID array */ size_t max_nobjs; /* Maximum # of IDs to put into array */ } H5F_olist_t; /********************/ /* Package Typedefs */ /********************/ /********************/ /* Local Prototypes */ /********************/ static herr_t H5F__get_objects(const H5F_t *f, unsigned types, size_t max_index, hid_t *obj_id_list, hbool_t app_ref, size_t *obj_id_count_ptr); static int H5F__get_objects_cb(void *obj_ptr, hid_t obj_id, void *key); static herr_t H5F__build_name(const char *prefix, const char *file_name, char **full_name/*out*/); static char *H5F__getenv_prefix_name(char **env_prefix/*in,out*/); static herr_t H5F__build_actual_name(const H5F_t *f, const H5P_genplist_t *fapl, const char *name, char ** /*out*/ actual_name); static herr_t H5F__flush_phase1(H5F_t *f); static herr_t H5F__flush_phase2(H5F_t *f, hbool_t closing); /*********************/ /* Package Variables */ /*********************/ /*****************************/ /* Library Private Variables */ /*****************************/ /*******************/ /* Local Variables */ /*******************/ /* Declare a free list to manage the H5F_t struct */ H5FL_DEFINE(H5F_t); /* Declare a free list to manage the H5F_file_t struct */ H5FL_DEFINE(H5F_file_t); /*------------------------------------------------------------------------- * Function: H5F_get_access_plist * * Purpose: Returns a copy of the file access property list of the * specified file. * * NOTE: Make sure that, if you are going to overwrite * information in the copied property list that was * previously opened and assigned to the property list, then * you must close it before overwriting the values. * * Return: Success: Object ID for a copy of the file access * property list. * Failure: H5I_INVALID_HID *------------------------------------------------------------------------- */ hid_t H5F_get_access_plist(H5F_t *f, hbool_t app_ref) { H5P_genplist_t *new_plist; /* New property list */ H5P_genplist_t *old_plist; /* Old property list */ H5FD_driver_prop_t driver_prop; /* Property for driver ID & info */ hbool_t driver_prop_copied = FALSE; /* Whether the driver property has been set up */ unsigned efc_size = 0; hid_t ret_value = H5I_INVALID_HID; /* Return value */ FUNC_ENTER_NOAPI(H5I_INVALID_HID) /* Check args */ HDassert(f); /* Make a copy of the default file access property list */ if(NULL == (old_plist = (H5P_genplist_t *)H5I_object(H5P_LST_FILE_ACCESS_ID_g))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "not a property list") if((ret_value = H5P_copy_plist(old_plist, app_ref)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTINIT, H5I_INVALID_HID, "can't copy file access property list") if(NULL == (new_plist = (H5P_genplist_t *)H5I_object(ret_value))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "not a property list") /* Copy properties of the file access property list */ if(H5P_set(new_plist, H5F_ACS_META_CACHE_INIT_CONFIG_NAME, &(f->shared->mdc_initCacheCfg)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set initial metadata cache resize config.") if(H5P_set(new_plist, H5F_ACS_DATA_CACHE_NUM_SLOTS_NAME, &(f->shared->rdcc_nslots)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set data cache number of slots") if(H5P_set(new_plist, H5F_ACS_DATA_CACHE_BYTE_SIZE_NAME, &(f->shared->rdcc_nbytes)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set data cache byte size") if(H5P_set(new_plist, H5F_ACS_PREEMPT_READ_CHUNKS_NAME, &(f->shared->rdcc_w0)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set preempt read chunks") if(H5P_set(new_plist, H5F_ACS_ALIGN_THRHD_NAME, &(f->shared->threshold)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set alignment threshold") if(H5P_set(new_plist, H5F_ACS_ALIGN_NAME, &(f->shared->alignment)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set alignment") if(H5P_set(new_plist, H5F_ACS_GARBG_COLCT_REF_NAME, &(f->shared->gc_ref)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set garbage collect reference") if(H5P_set(new_plist, H5F_ACS_META_BLOCK_SIZE_NAME, &(f->shared->meta_aggr.alloc_size)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set metadata cache size") if(H5P_set(new_plist, H5F_ACS_SIEVE_BUF_SIZE_NAME, &(f->shared->sieve_buf_size)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't sieve buffer size") if(H5P_set(new_plist, H5F_ACS_SDATA_BLOCK_SIZE_NAME, &(f->shared->sdata_aggr.alloc_size)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set 'small data' cache size") if(H5P_set(new_plist, H5F_ACS_LIBVER_LOW_BOUND_NAME, &f->shared->low_bound) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set 'low' bound for library format versions") if(H5P_set(new_plist, H5F_ACS_LIBVER_HIGH_BOUND_NAME, &f->shared->high_bound) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set 'high' bound for library format versions") if(H5P_set(new_plist, H5F_ACS_METADATA_READ_ATTEMPTS_NAME, &(f->shared->read_attempts)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set 'read attempts ' flag") if(H5P_set(new_plist, H5F_ACS_OBJECT_FLUSH_CB_NAME, &(f->shared->object_flush)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set object flush callback") if(f->shared->efc) efc_size = H5F__efc_max_nfiles(f->shared->efc); if(H5P_set(new_plist, H5F_ACS_EFC_SIZE_NAME, &efc_size) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, H5I_INVALID_HID, "can't set elink file cache size") if(f->shared->page_buf != NULL) { if(H5P_set(new_plist, H5F_ACS_PAGE_BUFFER_SIZE_NAME, &(f->shared->page_buf->max_size)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, H5I_INVALID_HID, "can't set page buffer size") if(H5P_set(new_plist, H5F_ACS_PAGE_BUFFER_MIN_META_PERC_NAME, &(f->shared->page_buf->min_meta_perc)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, H5I_INVALID_HID, "can't set minimum metadata fraction of page buffer") if(H5P_set(new_plist, H5F_ACS_PAGE_BUFFER_MIN_RAW_PERC_NAME, &(f->shared->page_buf->min_raw_perc)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, H5I_INVALID_HID, "can't set minimum raw data fraction of page buffer") } /* end if */ #ifdef H5_HAVE_PARALLEL if(H5P_set(new_plist, H5_COLL_MD_READ_FLAG_NAME, &(f->coll_md_read)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, H5I_INVALID_HID, "can't set collective metadata read flag") if(H5P_set(new_plist, H5F_ACS_COLL_MD_WRITE_FLAG_NAME, &(f->coll_md_write)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, H5I_INVALID_HID, "can't set collective metadata read flag") #endif /* H5_HAVE_PARALLEL */ if(H5P_set(new_plist, H5F_ACS_META_CACHE_INIT_IMAGE_CONFIG_NAME, &(f->shared->mdc_initCacheImageCfg)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set initial metadata cache resize config.") /* Prepare the driver property */ driver_prop.driver_id = f->shared->lf->driver_id; driver_prop.driver_info = H5FD_fapl_get(f->shared->lf); driver_prop_copied = TRUE; /* Set the driver property */ if(H5P_set(new_plist, H5F_ACS_FILE_DRV_NAME, &driver_prop) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set file driver ID & info") /* Set the file close degree appropriately */ if(f->shared->fc_degree == H5F_CLOSE_DEFAULT && H5P_set(new_plist, H5F_ACS_CLOSE_DEGREE_NAME, &(f->shared->lf->cls->fc_degree)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set file close degree") else if(f->shared->fc_degree != H5F_CLOSE_DEFAULT && H5P_set(new_plist, H5F_ACS_CLOSE_DEGREE_NAME, &(f->shared->fc_degree)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set file close degree") done: /* Release the copy of the driver info, if it was set up */ if(driver_prop_copied && H5FD_fapl_close(driver_prop.driver_id, driver_prop.driver_info) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEOBJ, H5I_INVALID_HID, "can't close copy of driver info") FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_get_access_plist() */ /*------------------------------------------------------------------------- * Function: H5F_get_obj_count * * Purpose: Private function return the number of opened object IDs * (files, datasets, groups, datatypes) in the same file. * * Return: SUCCEED on success, FAIL on failure. *------------------------------------------------------------------------- */ herr_t H5F_get_obj_count(const H5F_t *f, unsigned types, hbool_t app_ref, size_t *obj_id_count_ptr) { herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI(FAIL) /* Sanity check */ HDassert(obj_id_count_ptr); /* Perform the query */ if((ret_value = H5F__get_objects(f, types, 0, NULL, app_ref, obj_id_count_ptr)) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "H5F__get_objects failed") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_get_obj_count() */ /*------------------------------------------------------------------------- * Function: H5F_get_obj_ids * * Purpose: Private function to return a list of opened object IDs. * * Return: Non-negative on success; can't fail. *------------------------------------------------------------------------- */ herr_t H5F_get_obj_ids(const H5F_t *f, unsigned types, size_t max_objs, hid_t *oid_list, hbool_t app_ref, size_t *obj_id_count_ptr) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) /* Sanity check */ HDassert(obj_id_count_ptr); /* Perform the query */ if((ret_value = H5F__get_objects(f, types, max_objs, oid_list, app_ref, obj_id_count_ptr)) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "H5F__get_objects failed") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_get_obj_ids() */ /*--------------------------------------------------------------------------- * Function: H5F__get_objects * * Purpose: This function is called by H5F_get_obj_count or * H5F_get_obj_ids to get number of object IDs and/or a * list of opened object IDs (in return value). * * Return: SUCCEED/FAIL *--------------------------------------------------------------------------- */ static herr_t H5F__get_objects(const H5F_t *f, unsigned types, size_t max_nobjs, hid_t *obj_id_list, hbool_t app_ref, size_t *obj_id_count_ptr) { size_t obj_id_count = 0; /* Number of open IDs */ H5F_olist_t olist; /* Structure to hold search results */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC /* Sanity check */ HDassert(obj_id_count_ptr); /* Set up search information */ olist.obj_id_list = (max_nobjs==0 ? NULL : obj_id_list); olist.obj_id_count = &obj_id_count; olist.list_index = 0; olist.max_nobjs = max_nobjs; /* Determine if we are searching for local or global objects */ if(types & H5F_OBJ_LOCAL) { olist.file_info.local = TRUE; olist.file_info.ptr.file = f; } else { olist.file_info.local = FALSE; olist.file_info.ptr.shared = f ? f->shared : NULL; } /* Iterate through file IDs to count the number, and put their * IDs on the object list. */ if(types & H5F_OBJ_FILE) { olist.obj_type = H5I_FILE; if(H5I_iterate(H5I_FILE, H5F__get_objects_cb, &olist, app_ref) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(1)") } /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero), * or the caller wants to get the list of IDs and the list isn't full, * search through dataset IDs to count number of datasets, and put their * IDs on the object list */ if(!olist.max_nobjs || (olist.max_nobjs && olist.list_indexobj_type == H5I_FILE) { if((olist->file_info.local && (!olist->file_info.ptr.file || (olist->file_info.ptr.file && (H5F_t*)obj_ptr == olist->file_info.ptr.file))) || (!olist->file_info.local && (!olist->file_info.ptr.shared || (olist->file_info.ptr.shared && ((H5F_t*)obj_ptr)->shared == olist->file_info.ptr.shared)))) { add_obj = TRUE; } } else { /* Either count opened object IDs or put the IDs on the list */ H5O_loc_t *oloc; /* Group entry info for object */ switch(olist->obj_type) { case H5I_ATTR: oloc = H5A_oloc((H5A_t *)obj_ptr); break; case H5I_GROUP: oloc = H5G_oloc((H5G_t *)obj_ptr); break; case H5I_DATASET: oloc = H5D_oloc((H5D_t *)obj_ptr); break; case H5I_DATATYPE: if(H5T_is_named((H5T_t*)obj_ptr)==TRUE) oloc = H5T_oloc((H5T_t*)obj_ptr); else oloc = NULL; break; case H5I_UNINIT: case H5I_BADID: case H5I_FILE: case H5I_DATASPACE: case H5I_REFERENCE: case H5I_VFL: case H5I_VOL: case H5I_GENPROP_CLS: case H5I_GENPROP_LST: case H5I_ERROR_CLASS: case H5I_ERROR_MSG: case H5I_ERROR_STACK: case H5I_NTYPES: default: HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5_ITER_ERROR, "unknown or invalid data object") } /* end switch */ if((olist->file_info.local && ((!olist->file_info.ptr.file && olist->obj_type == H5I_DATATYPE && H5T_is_immutable((H5T_t *)obj_ptr) == FALSE) || (!olist->file_info.ptr.file && olist->obj_type != H5I_DATATYPE) || (oloc && oloc->file == olist->file_info.ptr.file))) || (!olist->file_info.local && ((!olist->file_info.ptr.shared && olist->obj_type == H5I_DATATYPE && H5T_is_immutable((H5T_t *)obj_ptr) == FALSE) || (!olist->file_info.ptr.shared && olist->obj_type != H5I_DATATYPE) || (oloc && oloc->file && oloc->file->shared == olist->file_info.ptr.shared)))) { add_obj = TRUE; } } /* end else */ if(add_obj) { /* Add the object's ID to the ID list, if appropriate */ if(olist->obj_id_list) { olist->obj_id_list[olist->list_index] = obj_id; olist->list_index++; } /* Increment the number of open objects */ if(olist->obj_id_count) (*olist->obj_id_count)++; /* Check if we've filled up the array. Return H5_ITER_STOP only if * we have filled up the array. Otherwise return H5_ITER_CONT(RET_VALUE is * preset to H5_ITER_CONT) because H5I_iterate needs the return value of * H5_ITER_CONT to continue the iteration. */ if(olist->max_nobjs > 0 && olist->list_index >= olist->max_nobjs) HGOTO_DONE(H5_ITER_STOP) /* Indicate that the iterator should stop */ } done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__get_objects_cb() */ /*-------------------------------------------------------------------------- * Function: H5F__build_name * * Purpose: Prepend PREFIX to FILE_NAME and store in FULL_NAME * * Return: SUCCEED/FAIL *--------------------------------------------------------------------------*/ static herr_t H5F__build_name(const char *prefix, const char *file_name, char **full_name/*out*/) { size_t prefix_len; /* length of prefix */ size_t fname_len; /* Length of external link file name */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC prefix_len = HDstrlen(prefix); fname_len = HDstrlen(file_name); /* Allocate a buffer to hold the filename + prefix + possibly the delimiter + terminating null byte */ if(NULL == (*full_name = (char *)H5MM_malloc(prefix_len + fname_len + 2))) HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, FAIL, "unable to allocate filename buffer") /* Compose the full file name */ HDsnprintf(*full_name, (prefix_len + fname_len + 2), "%s%s%s", prefix, ((prefix_len == 0 || H5_CHECK_DELIMITER(prefix[prefix_len - 1])) ? "" : H5_DIR_SEPS), file_name); done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F__build_name() */ /*-------------------------------------------------------------------------- * Function: H5F__getenv_prefix_name * * Purpose: Get the first pathname in the list of pathnames stored in env_prefix, * which is separated by the environment delimiter. * env_prefix is modified to point to the remaining pathnames * in the list. * * Return: A pointer to a pathname (can't fail but can return NULL) --------------------------------------------------------------------------*/ static char * H5F__getenv_prefix_name(char **env_prefix/*in,out*/) { char *strret; /* Pointer to next separator */ char *ret_value = NULL; /* Return value */ FUNC_ENTER_STATIC_NOERR /* Set return value now */ ret_value = *env_prefix; /* Advance to next component, if possible */ strret = HDstrchr(*env_prefix, H5_COLON_SEPC); if(strret == NULL) *env_prefix = NULL; else { /* Advance to next component */ *env_prefix = strret + 1; /* Terminate current component (pointed to by ret_value) */ *strret = '\0'; } /* end else */ FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__getenv_prefix_name() */ /*------------------------------------------------------------------------- * Function: H5F_prefix_open_file * * Purpose: Attempts to open a dataset file. * * Return: Pointer to an opened file on success / NULL on failure *------------------------------------------------------------------------- */ H5F_t * H5F_prefix_open_file(H5F_t *primary_file, H5F_prefix_open_t prefix_type, const char *prop_prefix, const char *file_name, unsigned file_intent, hid_t fapl_id) { H5F_t *src_file = NULL; /* Source file */ char *full_name = NULL; /* File name with prefix */ char *actual_file_name = NULL; /* File's actual name */ char *temp_file_name = NULL; /* Temporary pointer to file name */ size_t temp_file_name_len; /* Length of temporary file name */ H5F_t *ret_value = NULL; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* Simplify intent flags for open calls */ file_intent &= (H5F_ACC_RDWR | H5F_ACC_SWMR_WRITE | H5F_ACC_SWMR_READ); /* Copy the file name to use */ if(NULL == (temp_file_name = H5MM_strdup(file_name))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") temp_file_name_len = HDstrlen(temp_file_name); /* Target file_name is an absolute pathname: see RM for detailed description */ if(H5_CHECK_ABSOLUTE(file_name) || H5_CHECK_ABS_PATH(file_name)) { /* Try opening file */ src_file = H5F__efc_open(primary_file, file_name, file_intent, H5P_FILE_CREATE_DEFAULT, fapl_id); /* Adjust temporary file name if file not opened */ if(NULL == src_file) { char *ptr; /* Reset the error stack */ H5E_clear_stack(NULL); /* Get last component of file_name */ H5_GET_LAST_DELIMITER(file_name, ptr) HDassert(ptr); /* Increment past delimiter */ ptr++; /* Copy into the temp. file name */ HDstrncpy(temp_file_name, ptr, temp_file_name_len); temp_file_name[temp_file_name_len - 1] = '\0'; } /* end if */ } /* end if */ else if(H5_CHECK_ABS_DRIVE(file_name)) { /* Try opening file */ src_file = H5F__efc_open(primary_file, file_name, file_intent, H5P_FILE_CREATE_DEFAULT, fapl_id); /* Adjust temporary file name if file not opened */ if(NULL == src_file) { /* Reset the error stack */ H5E_clear_stack(NULL); /* Strip ":" */ HDstrncpy(temp_file_name, &file_name[2], temp_file_name_len); temp_file_name[temp_file_name_len - 1] = '\0'; } /* end if */ } /* end if */ /* Try searching from paths set in the environment variable */ if(src_file == NULL) { char *env_prefix; /* Get the appropriate environment variable */ if(H5F_PREFIX_VDS == prefix_type) env_prefix = HDgetenv("HDF5_VDS_PREFIX"); else if(H5F_PREFIX_ELINK == prefix_type) env_prefix = HDgetenv("HDF5_EXT_PREFIX"); else HGOTO_ERROR(H5E_FILE, H5E_BADTYPE, NULL, "prefix type is not sensible") /* If environment variable is defined, iterate through prefixes it defines */ if(NULL != env_prefix) { char *tmp_env_prefix, *saved_env; /* Make a copy of the environment variable string */ if(NULL == (saved_env = tmp_env_prefix = H5MM_strdup(env_prefix))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") /* Loop over prefixes in environment variable */ while((tmp_env_prefix) && (*tmp_env_prefix)) { char *out_prefix_name; out_prefix_name = H5F__getenv_prefix_name(&tmp_env_prefix/*in,out*/); if(out_prefix_name && (*out_prefix_name)) { if(H5F__build_name(out_prefix_name, temp_file_name, &full_name/*out*/) < 0) { saved_env = (char *)H5MM_xfree(saved_env); HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't prepend prefix to filename") } /* end if */ /* Try opening file */ src_file = H5F__efc_open(primary_file, full_name, file_intent, H5P_FILE_CREATE_DEFAULT, fapl_id); /* Release copy of file name */ full_name = (char *)H5MM_xfree(full_name); /* Check for file not opened */ if(NULL == src_file) /* Reset the error stack */ H5E_clear_stack(NULL); /* Leave if file was opened */ else break; H5E_clear_stack(NULL); } /* end if */ } /* end while */ saved_env = (char *)H5MM_xfree(saved_env); } /* end if */ } /* end if */ /* Try searching from property list */ if(src_file == NULL && prop_prefix) { /* Construct name to open */ if(H5F__build_name(prop_prefix, temp_file_name, &full_name/*out*/) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't prepend prefix to filename") /* Try opening file */ src_file = H5F__efc_open(primary_file, full_name, file_intent, H5P_FILE_CREATE_DEFAULT, fapl_id); /* Release name */ full_name = (char *)H5MM_xfree(full_name); /* Check for file not opened */ if(NULL == src_file) /* Reset the error stack */ H5E_clear_stack(NULL); } /* end if */ /* Try searching from main file's "extpath": see description in H5F_open() & H5_build_extpath() */ if(src_file == NULL) { char *dspath; if(NULL != (dspath = H5F_EXTPATH(primary_file))) { /* Construct name to open */ if(H5F__build_name(dspath, temp_file_name, &full_name/*out*/) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't prepend prefix to filename") /* Try opening file */ src_file = H5F__efc_open(primary_file, full_name, file_intent, H5P_FILE_CREATE_DEFAULT, fapl_id); /* Release name */ full_name = (char *)H5MM_xfree(full_name); /* Check for file not opened */ if(NULL == src_file) /* Reset the error stack */ H5E_clear_stack(NULL); } /* end if */ } /* end if */ /* Try the relative file_name stored in temp_file_name */ if(src_file == NULL) { /* Try opening file */ src_file = H5F__efc_open(primary_file, temp_file_name, file_intent, H5P_FILE_CREATE_DEFAULT, fapl_id); /* Check for file not opened */ if(NULL == src_file) /* Reset the error stack */ H5E_clear_stack(NULL); } /* end if */ /* try the 'resolved' name for the virtual file */ if(src_file == NULL) { char *ptr = NULL; /* Copy resolved file name */ if(NULL == (actual_file_name = H5MM_strdup(H5F_ACTUAL_NAME(primary_file)))) HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, NULL, "can't duplicate resolved file name string") /* get last component of file_name */ H5_GET_LAST_DELIMITER(actual_file_name, ptr) if(!ptr) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file, file name = '%s', temp_file_name = '%s'", file_name, temp_file_name) /* Truncate filename portion from actual file name path */ *ptr = '\0'; /* Build new file name for the external file */ if(H5F__build_name(actual_file_name, temp_file_name, &full_name/*out*/) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't prepend prefix to filename") actual_file_name = (char *)H5MM_xfree(actual_file_name); /* Try opening with the resolved name */ src_file = H5F__efc_open(primary_file, full_name, file_intent, H5P_FILE_CREATE_DEFAULT, fapl_id); /* Release name */ full_name = (char *)H5MM_xfree(full_name); /* Check for file not opened */ if(NULL == src_file) /* Reset the error stack */ H5E_clear_stack(NULL); } /* end if */ /* Success */ ret_value = src_file; done: if((NULL == ret_value) && src_file) if(H5F_efc_close(primary_file, src_file) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, NULL, "can't close source file") if(full_name) full_name = (char *)H5MM_xfree(full_name); if(temp_file_name) temp_file_name = (char *)H5MM_xfree(temp_file_name); if(actual_file_name) actual_file_name = (char *)H5MM_xfree(actual_file_name); FUNC_LEAVE_NOAPI(ret_value) } /* H5F_prefix_open_file() */ /*------------------------------------------------------------------------- * Function: H5F__is_hdf5 * * Purpose: Check the file signature to detect an HDF5 file. * * Return: TRUE/FALSE/FAIL *------------------------------------------------------------------------- */ htri_t H5F__is_hdf5(const char *name, hid_t fapl_id) { H5FD_t *file = NULL; /* Low-level file struct */ haddr_t sig_addr; /* Addess of hdf5 file signature */ htri_t ret_value = FAIL; /* Return value */ FUNC_ENTER_PACKAGE /* Open the file */ /* NOTE: This now uses the fapl_id that was passed in, so H5Fis_accessible() * should work with arbitrary VFDs, unlike H5Fis_hdf5(). */ if(NULL == (file = H5FD_open(name, H5F_ACC_RDONLY, fapl_id, HADDR_UNDEF))) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, FAIL, "unable to open file") /* The file is an hdf5 file if the hdf5 file signature can be found */ if(H5FD_locate_signature(file, &sig_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_NOTHDF5, FAIL, "unable to locate file signature") ret_value = (HADDR_UNDEF != sig_addr); done: /* Close the file */ if(file) if(H5FD_close(file) < 0 && TRUE == ret_value) HDONE_ERROR(H5E_IO, H5E_CANTCLOSEFILE, FAIL, "unable to close file") FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__is_hdf5() */ /*------------------------------------------------------------------------- * Function: H5F__new * * Purpose: Creates a new file object and initializes it. The * H5Fopen and H5Fcreate functions then fill in various fields. * If SHARED is a non-null pointer then the shared info * to which it points has the reference count incremented. * Otherwise a new, empty shared info struct is created and * initialized with the specified file access property list. * * Return: Success: Pointer to a new file struct * * Failure: NULL * *------------------------------------------------------------------------- */ H5F_t * H5F__new(H5F_file_t *shared, unsigned flags, hid_t fcpl_id, hid_t fapl_id, H5FD_t *lf) { H5F_t *f = NULL; H5F_t *ret_value = NULL; FUNC_ENTER_PACKAGE if(NULL == (f = H5FL_CALLOC(H5F_t))) HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, NULL, "can't allocate top file structure") f->id_exists = FALSE; if(shared) { HDassert(lf == NULL); f->shared = shared; } else { H5P_genplist_t *plist; /* Property list */ unsigned efc_size; /* External file cache size */ size_t u; /* Local index variable */ HDassert(lf != NULL); if(NULL == (f->shared = H5FL_CALLOC(H5F_file_t))) HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, NULL, "can't allocate shared file structure") f->shared->flags = flags; f->shared->sohm_addr = HADDR_UNDEF; f->shared->sohm_vers = HDF5_SHAREDHEADER_VERSION; f->shared->accum.loc = HADDR_UNDEF; f->shared->lf = lf; /* Initialization for handling file space */ for(u = 0; u < NELMTS(f->shared->fs_addr); u++) { f->shared->fs_state[u] = H5F_FS_STATE_CLOSED; f->shared->fs_addr[u] = HADDR_UNDEF; f->shared->fs_man[u] = NULL; } f->shared->first_alloc_dealloc = FALSE; f->shared->eoa_pre_fsm_fsalloc = HADDR_UNDEF; f->shared->eoa_post_fsm_fsalloc = HADDR_UNDEF; f->shared->eoa_post_mdci_fsalloc = HADDR_UNDEF; /* Initialization for handling file space (for paged aggregation) */ f->shared->pgend_meta_thres = H5F_FILE_SPACE_PGEND_META_THRES; /* intialize point of no return */ f->shared->point_of_no_return = FALSE; /* Copy the file creation and file access property lists into the * new file handle. We do this early because some values might need * to change as the file is being opened. */ if(NULL == (plist = (H5P_genplist_t *)H5I_object(fcpl_id))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not property list") f->shared->fcpl_id = H5P_copy_plist(plist, FALSE); /* Get the FCPL values to cache */ if(H5P_get(plist, H5F_CRT_ADDR_BYTE_NUM_NAME, &f->shared->sizeof_addr) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get byte number for address") if(H5P_get(plist, H5F_CRT_OBJ_BYTE_NUM_NAME, &f->shared->sizeof_size) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get byte number for object size") if(H5P_get(plist, H5F_CRT_SHMSG_NINDEXES_NAME, &f->shared->sohm_nindexes) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get number of SOHM indexes") HDassert(f->shared->sohm_nindexes < 255); if(H5P_get(plist, H5F_CRT_FILE_SPACE_STRATEGY_NAME, &f->shared->fs_strategy) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get file space strategy") if(H5P_get(plist, H5F_CRT_FREE_SPACE_PERSIST_NAME, &f->shared->fs_persist) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get file space persisting status") if(H5P_get(plist, H5F_CRT_FREE_SPACE_THRESHOLD_NAME, &f->shared->fs_threshold) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get free-space section threshold") if(H5P_get(plist, H5F_CRT_FILE_SPACE_PAGE_SIZE_NAME, &f->shared->fs_page_size) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get file space page size") HDassert(f->shared->fs_page_size >= H5F_FILE_SPACE_PAGE_SIZE_MIN); /* Temporary for multi/split drivers: fail file creation * when persisting free-space or using paged aggregation strategy. */ if(H5F_HAS_FEATURE(f, H5FD_FEAT_PAGED_AGGR)) if(f->shared->fs_strategy == H5F_FSPACE_STRATEGY_PAGE || f->shared->fs_persist) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't open with this strategy or persistent fs") /* Get the FAPL values to cache */ if(NULL == (plist = (H5P_genplist_t *)H5I_object(fapl_id))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not file access property list") if(H5P_get(plist, H5F_ACS_META_CACHE_INIT_CONFIG_NAME, &(f->shared->mdc_initCacheCfg)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get initial metadata cache resize config") if(H5P_get(plist, H5F_ACS_DATA_CACHE_NUM_SLOTS_NAME, &(f->shared->rdcc_nslots)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get data cache number of slots") if(H5P_get(plist, H5F_ACS_DATA_CACHE_BYTE_SIZE_NAME, &(f->shared->rdcc_nbytes)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get data cache byte size") if(H5P_get(plist, H5F_ACS_PREEMPT_READ_CHUNKS_NAME, &(f->shared->rdcc_w0)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get preempt read chunk") if(H5P_get(plist, H5F_ACS_ALIGN_THRHD_NAME, &(f->shared->threshold)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get alignment threshold") if(H5P_get(plist, H5F_ACS_ALIGN_NAME, &(f->shared->alignment)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get alignment") if(H5P_get(plist, H5F_ACS_GARBG_COLCT_REF_NAME,&(f->shared->gc_ref)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get garbage collect reference") if(H5P_get(plist, H5F_ACS_SIEVE_BUF_SIZE_NAME, &(f->shared->sieve_buf_size)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get sieve buffer size") if(H5P_get(plist, H5F_ACS_LIBVER_LOW_BOUND_NAME, &(f->shared->low_bound)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'low' bound for library format versions") if(H5P_get(plist, H5F_ACS_LIBVER_HIGH_BOUND_NAME, &(f->shared->high_bound)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'high' bound for library format versions") if(H5P_get(plist, H5F_ACS_USE_MDC_LOGGING_NAME, &(f->shared->use_mdc_logging)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'use mdc logging' flag") if(H5P_get(plist, H5F_ACS_START_MDC_LOG_ON_ACCESS_NAME, &(f->shared->start_mdc_log_on_access)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'start mdc log on access' flag") if(H5P_get(plist, H5F_ACS_META_BLOCK_SIZE_NAME, &(f->shared->meta_aggr.alloc_size)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get metadata cache size") f->shared->meta_aggr.feature_flag = H5FD_FEAT_AGGREGATE_METADATA; if(H5P_get(plist, H5F_ACS_SDATA_BLOCK_SIZE_NAME, &(f->shared->sdata_aggr.alloc_size)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'small data' cache size") f->shared->sdata_aggr.feature_flag = H5FD_FEAT_AGGREGATE_SMALLDATA; if(H5P_get(plist, H5F_ACS_EFC_SIZE_NAME, &efc_size) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get elink file cache size") if(efc_size > 0) if(NULL == (f->shared->efc = H5F__efc_create(efc_size))) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "can't create external file cache") #ifdef H5_HAVE_PARALLEL if(H5P_get(plist, H5_COLL_MD_READ_FLAG_NAME, &(f->coll_md_read)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get collective metadata read flag") if(H5P_get(plist, H5F_ACS_COLL_MD_WRITE_FLAG_NAME, &(f->coll_md_write)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get collective metadata write flag") #endif /* H5_HAVE_PARALLEL */ if(H5P_get(plist, H5F_ACS_META_CACHE_INIT_IMAGE_CONFIG_NAME, &(f->shared->mdc_initCacheImageCfg)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get initial metadata cache resize config") /* Get the VFD values to cache */ f->shared->maxaddr = H5FD_get_maxaddr(lf); if(!H5F_addr_defined(f->shared->maxaddr)) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad maximum address from VFD") if(H5FD_get_feature_flags(lf, &f->shared->feature_flags) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get feature flags from VFD") /* Require the SWMR feature flag if SWMR I/O is desired */ if(!H5F_HAS_FEATURE(f, H5FD_FEAT_SUPPORTS_SWMR_IO) && (H5F_INTENT(f) & (H5F_ACC_SWMR_WRITE | H5F_ACC_SWMR_READ))) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "must use a SWMR-compatible VFD when SWMR is specified") if(H5FD_get_fs_type_map(lf, f->shared->fs_type_map) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get free space type mapping from VFD") if(H5MF_init_merge_flags(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "problem initializing free space merge flags") f->shared->tmp_addr = f->shared->maxaddr; /* Disable temp. space allocation for parallel I/O (for now) */ /* (When we've arranged to have the relocated metadata addresses (and * sizes) broadcast during the "end of epoch" metadata operations, * this can be enabled - QAK) */ /* (This should be disabled when the metadata journaling branch is * merged into the trunk and journaling is enabled, at least until * we make it work. - QAK) */ f->shared->use_tmp_space = !H5F_HAS_FEATURE(f, H5FD_FEAT_HAS_MPI); /* Retrieve the # of read attempts here so that sohm in superblock will get the correct # of attempts */ if(H5P_get(plist, H5F_ACS_METADATA_READ_ATTEMPTS_NAME, &f->shared->read_attempts) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get the # of read attempts") /* When opening file with SWMR access, the # of read attempts is H5F_SWMR_METADATA_READ_ATTEMPTS if not set */ /* When opening file without SWMR access, the # of read attempts is always H5F_METADATA_READ_ATTEMPTS (set or not set) */ if(H5F_INTENT(f) & (H5F_ACC_SWMR_READ | H5F_ACC_SWMR_WRITE)) { /* If no value for read attempts has been set, use the default */ if(!f->shared->read_attempts) f->shared->read_attempts = H5F_SWMR_METADATA_READ_ATTEMPTS; /* Turn off accumulator with SWMR */ f->shared->feature_flags &= ~(unsigned)H5FD_FEAT_ACCUMULATE_METADATA; if(H5FD_set_feature_flags(f->shared->lf, f->shared->feature_flags) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, NULL, "can't set feature_flags in VFD") } else { /* If no value for read attempts has been set, use the default */ if(!f->shared->read_attempts) f->shared->read_attempts = H5F_METADATA_READ_ATTEMPTS; } /* Determine the # of bins for metdata read retries */ if(H5F_set_retries(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "can't set retries and retries_nbins") /* Get the metadata cache log location (if we're logging) */ { char *mdc_log_location = NULL; /* location of metadata cache log location */ if(H5P_get(plist, H5F_ACS_MDC_LOG_LOCATION_NAME, &mdc_log_location) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get mdc log location") if(mdc_log_location != NULL) { size_t len = HDstrlen(mdc_log_location); if(NULL == (f->shared->mdc_log_location = (char *)H5MM_calloc((len + 1) * sizeof(char)))) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, NULL, "can't allocate memory for mdc log file name") HDstrncpy(f->shared->mdc_log_location, mdc_log_location, len); } else f->shared->mdc_log_location = NULL; } /* end block */ /* Get object flush callback information */ if(H5P_get(plist, H5F_ACS_OBJECT_FLUSH_CB_NAME, &(f->shared->object_flush)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get object flush cb info") /* Create a metadata cache with the specified number of elements. * The cache might be created with a different number of elements and * the access property list should be updated to reflect that. */ if(H5AC_create(f, &(f->shared->mdc_initCacheCfg), &(f->shared->mdc_initCacheImageCfg)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create metadata cache") /* Create the file's "open object" information */ if(H5FO_create(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create open object data structure") /* Add new "shared" struct to list of open files */ if(H5F__sfile_add(f->shared) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to append to list of open files") } /* end else */ f->shared->nrefs++; /* Create the file's "top open object" information */ if(H5FO_top_create(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create open object data structure") /* Set return value */ ret_value = f; done: if(!ret_value && f) { if(!shared) { /* Attempt to clean up some of the shared file structures */ if(f->shared->efc) if(H5F__efc_destroy(f->shared->efc) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, NULL, "can't destroy external file cache") if(f->shared->fcpl_id > 0) if(H5I_dec_ref(f->shared->fcpl_id) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTDEC, NULL, "can't close property list") f->shared = H5FL_FREE(H5F_file_t, f->shared); } f = H5FL_FREE(H5F_t, f); } FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__new() */ /*------------------------------------------------------------------------- * Function: H5F__dest * * Purpose: Destroys a file structure. This function flushes the cache * but doesn't do any other cleanup other than freeing memory * for the file struct. The shared info for the file is freed * only when its reference count reaches zero. * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F__dest(H5F_t *f, hbool_t flush) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ HDassert(f); HDassert(f->shared); if(1 == f->shared->nrefs) { int actype; /* metadata cache type (enum value) */ /* Flush at this point since the file will be closed (phase 1). * Only try to flush the file if it was opened with write access, and if * the caller requested a flush. */ if((H5F_ACC_RDWR & H5F_INTENT(f)) && flush) if(H5F__flush_phase1(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush cached data (phase 1)") /* Notify the metadata cache that the file is about to be closed. * This allows the cache to set up for creating a metadata cache * image if this has been requested. */ if(H5AC_prep_for_file_close(f) < 0) /* Push error, but keep going */ HDONE_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "metadata cache prep for close failed") /* Flush at this point since the file will be closed (phase 2). * Only try to flush the file if it was opened with write access, and if * the caller requested a flush. */ if((H5F_ACC_RDWR & H5F_INTENT(f)) && flush) if(H5F__flush_phase2(f, TRUE) < 0) /* Push error, but keep going */ HDONE_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush cached data (phase 2)") /* With the shutdown modifications, the contents of the metadata cache * should be clean at this point, with the possible exception of the * the superblock and superblock extension. * * Verify this. */ HDassert(H5AC_cache_is_clean(f, H5AC_RING_MDFSM)); /* Release the external file cache */ if(f->shared->efc) { if(H5F__efc_destroy(f->shared->efc) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't destroy external file cache") f->shared->efc = NULL; } /* end if */ /* With the shutdown modifications, the contents of the metadata cache * should be clean at this point, with the possible exception of the * the superblock and superblock extension. * * Verify this. */ HDassert(H5AC_cache_is_clean(f, H5AC_RING_MDFSM)); /* Release objects that depend on the superblock being initialized */ if(f->shared->sblock) { /* Shutdown file free space manager(s) */ /* (We should release the free space information now (before * truncating the file and before the metadata cache is shut * down) since the free space manager is holding some data * structures in memory and also because releasing free space * can shrink the file's 'eoa' value) * * Update 11/1/16: * * With recent library shutdown modifications, the free space * managers should be settled and written to file at this point * (assuming they are persistent). In this case, closing the * free space managers should have no effect on EOA. * * -- JRM */ if(H5F_ACC_RDWR & H5F_INTENT(f)) { if(H5MF_close(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file free space info") /* at this point, only the superblock and superblock * extension should be dirty. */ HDassert(H5AC_cache_is_clean(f, H5AC_RING_MDFSM)); /* Flush the file again (if requested), as shutting down the * free space manager may dirty some data structures again. */ if(flush) { /* Clear status_flags */ f->shared->sblock->status_flags &= (uint8_t)(~H5F_SUPER_WRITE_ACCESS); f->shared->sblock->status_flags &= (uint8_t)(~H5F_SUPER_SWMR_WRITE_ACCESS); /* Mark EOA info dirty in cache, so change will get encoded */ if(H5F_eoa_dirty(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty") /* Release any space allocated to space aggregators, * so that the eoa value corresponds to the end of the * space written to in the file. * * At most, this should change the superblock or the * superblock extension messages. */ if(H5MF_free_aggrs(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file space") /* Truncate the file to the current allocated size */ if(H5FD_truncate(f->shared->lf, TRUE) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "low level truncate failed") /* at this point, only the superblock and superblock * extension should be dirty. */ HDassert(H5AC_cache_is_clean(f, H5AC_RING_MDFSM)); } /* end if */ } /* end if */ /* if it exists, unpin the driver information block cache entry, * since we're about to destroy the cache */ if(f->shared->drvinfo) if(H5AC_unpin_entry(f->shared->drvinfo) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FSPACE, H5E_CANTUNPIN, FAIL, "unable to unpin drvinfo") /* Unpin the superblock, since we're about to destroy the cache */ if(H5AC_unpin_entry(f->shared->sblock) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FSPACE, H5E_CANTUNPIN, FAIL, "unable to unpin superblock") f->shared->sblock = NULL; } /* end if */ /* with the possible exception of the superblock and superblock * extension, the metadata cache should be clean at this point. * * Verify this. */ HDassert(H5AC_cache_is_clean(f, H5AC_RING_MDFSM)); /* Remove shared file struct from list of open files */ if(H5F__sfile_remove(f->shared) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file") /* Shutdown the metadata cache */ /* (Flushes any remaining dirty entries, which should only be the * superblock and / or driver info at this point) */ if(H5AC_dest(f)) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file") /* Shutdown the page buffer cache */ if(H5PB_dest(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing page buffer cache") /* Clean up the metadata cache log location string */ if(f->shared->mdc_log_location) f->shared->mdc_log_location = (char *)H5MM_xfree(f->shared->mdc_log_location); /* * Do not close the root group since we didn't count it, but free * the memory associated with it. */ if(f->shared->root_grp) { /* Free the root group */ if(H5G_root_free(f->shared->root_grp) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file") f->shared->root_grp = NULL; } /* end if */ /* Destroy other components of the file */ if(H5F__accum_reset(f, TRUE) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file") if(H5FO_dest(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file") f->shared->cwfs = (struct H5HG_heap_t **)H5MM_xfree(f->shared->cwfs); if(H5G_node_close(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file") /* Destroy file creation properties */ if(H5I_GENPROP_LST != H5I_get_type(f->shared->fcpl_id)) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_BADTYPE, FAIL, "not a property list") if(H5I_dec_ref(f->shared->fcpl_id) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTDEC, FAIL, "can't close property list") /* Close the file */ if(H5FD_close(f->shared->lf) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "unable to close file") /* Free mount table */ f->shared->mtab.child = (H5F_mount_t *)H5MM_xfree(f->shared->mtab.child); f->shared->mtab.nalloc = 0; /* Clean up the metadata retries array */ for(actype = 0; actype < (int)H5AC_NTYPES; actype++) if(f->shared->retries[actype]) f->shared->retries[actype] = (uint32_t *)H5MM_xfree(f->shared->retries[actype]); /* Destroy shared file struct */ f->shared = (H5F_file_t *)H5FL_FREE(H5F_file_t, f->shared); } else if(f->shared->nrefs > 0) { /* * There are other references to the shared part of the file. * Only decrement the reference count. */ --f->shared->nrefs; } /* Free the non-shared part of the file */ f->open_name = (char *)H5MM_xfree(f->open_name); f->actual_name = (char *)H5MM_xfree(f->actual_name); f->extpath = (char *)H5MM_xfree(f->extpath); if(H5FO_top_dest(f) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "problems closing file") f->shared = NULL; f = H5FL_FREE(H5F_t, f); FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__dest() */ /*------------------------------------------------------------------------- * Function: H5F_open * * Purpose: Opens (or creates) a file. This function understands the * following flags which are similar in nature to the Posix * open(2) flags. * * H5F_ACC_RDWR: Open with read/write access. If the file is * currently open for read-only access then it * will be reopened. Absence of this flag * implies read-only access. * * H5F_ACC_CREAT: Create a new file if it doesn't exist yet. * The permissions are 0666 bit-wise AND with * the current umask. H5F_ACC_WRITE must also * be specified. * * H5F_ACC_EXCL: This flag causes H5F_open() to fail if the * file already exists. * * H5F_ACC_TRUNC: The file is truncated and a new HDF5 superblock * is written. This operation will fail if the * file is already open. * * Unlinking the file name from the group directed graph while * the file is opened causes the file to continue to exist but * one will not be able to upgrade the file from read-only * access to read-write access by reopening it. Disk resources * for the file are released when all handles to the file are * closed. NOTE: This paragraph probably only applies to Unix; * deleting the file name in other OS's has undefined results. * * The CREATE_PARMS argument is optional. A null pointer will * cause the default file creation parameters to be used. * * The ACCESS_PARMS argument is optional. A null pointer will * cause the default file access parameters to be used. * * The following two tables show results of file opens for single and concurrent access: * * SINGLE PROCESS ACCESS CONCURRENT ACCESS * * #1st open# #1st open# * -- SR SR -- -- SR SR -- -- SR SR -- -- SR SR -- * -- -- SW SW SW SW -- -- -- -- SW SW SW SW -- -- * W W W W R R R R W W W W R R R R * #2nd open# #2nd open# * -------------------------- -------------------------- * -- -- W | s x x s x x f f | -- -- W | f x x f x x f f | * SR -- W | x x x x x x x x | SR -- W | x x x x x x x x | * SR SW W | x x x x x x x x | SR SW W | x x x x x x x x | * -- SW W | f x x s x x f f | -- SW W | f x x f x x f f | * -- SW R | x x x x x x x x | -- SW R | x x x x x x x x | * SR SW R | x x x x x x x x | SR SW R | x x x x x x x x | * SR -- R | s x x s x x s f | SR -- R | f x x s x x s s | * -- -- R | s x x s x x s s | -- -- R | f x x f x x s s | * -------------------------- -------------------------- * * Notations: * W: H5F_ACC_RDWR * R: H5F_ACC_RDONLY * SW: H5F_ACC_SWMR_WRITE * SR: H5F_ACC_SWMR_READ * * x: the first open or second open itself fails due to invalid flags combination * f: the open fails with flags combination from both the first and second opens * s: the open succeeds with flags combination from both the first and second opens * * * Return: Success: A new file pointer. * Failure: NULL *------------------------------------------------------------------------- */ H5F_t * H5F_open(const char *name, unsigned flags, hid_t fcpl_id, hid_t fapl_id) { H5F_t *file = NULL; /*the success return value */ H5F_file_t *shared = NULL; /*shared part of `file' */ H5FD_t *lf = NULL; /*file driver part of `shared' */ unsigned tent_flags; /*tentative flags */ H5FD_class_t *drvr; /*file driver class info */ H5P_genplist_t *a_plist; /*file access property list */ H5F_close_degree_t fc_degree; /*file close degree */ size_t page_buf_size; unsigned page_buf_min_meta_perc; unsigned page_buf_min_raw_perc; hbool_t set_flag = FALSE; /*set the status_flags in the superblock */ hbool_t clear = FALSE; /*clear the status_flags */ hbool_t evict_on_close; /* evict on close value from plist */ char *lock_env_var = NULL;/*env var pointer */ hbool_t use_file_locking; /*read from env var */ hbool_t ci_load = FALSE; /* whether MDC ci load requested */ hbool_t ci_write = FALSE; /* whether MDC CI write requested */ H5F_t *ret_value = NULL; /*actual return value */ FUNC_ENTER_NOAPI(NULL) /* * If the driver has a `cmp' method then the driver is capable of * determining when two file handles refer to the same file and the * library can insure that when the application opens a file twice * that the two handles coordinate their operations appropriately. * Otherwise it is the application's responsibility to never open the * same file more than once at a time. */ if(NULL == (drvr = H5FD_get_class(fapl_id))) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "unable to retrieve VFL class") /* Check the environment variable that determines if we care * about file locking. File locking should be used unless explicitly * disabled. */ lock_env_var = HDgetenv("HDF5_USE_FILE_LOCKING"); if(lock_env_var && !HDstrcmp(lock_env_var, "FALSE")) use_file_locking = FALSE; else use_file_locking = TRUE; /* * Opening a file is a two step process. First we try to open the * file in a way which doesn't affect its state (like not truncating * or creating it) so we can compare it with files that are already * open. If that fails then we try again with the full set of flags * (only if they're different than the original failed attempt). * However, if the file driver can't distinquish between files then * there's no reason to open the file tentatively because it's the * application's responsibility to prevent this situation (there's no * way for us to detect it here anyway). */ if(drvr->cmp) tent_flags = flags & ~(H5F_ACC_CREAT|H5F_ACC_TRUNC|H5F_ACC_EXCL); else tent_flags = flags; if(NULL == (lf = H5FD_open(name, tent_flags, fapl_id, HADDR_UNDEF))) { if(tent_flags == flags) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: name = '%s', tent_flags = %x", name, tent_flags) H5E_clear_stack(NULL); tent_flags = flags; if(NULL == (lf = H5FD_open(name, tent_flags, fapl_id, HADDR_UNDEF))) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: name = '%s', tent_flags = %x", name, tent_flags) } /* end if */ /* Is the file already open? */ if((shared = H5F__sfile_search(lf)) != NULL) { /* * The file is already open, so use that one instead of the one we * just opened. We only one one H5FD_t* per file so one doesn't * confuse the other. But fail if this request was to truncate the * file (since we can't do that while the file is open), or if the * request was to create a non-existent file (since the file already * exists), or if the new request adds write access (since the * readers don't expect the file to change under them), or if the * SWMR write/read access flags don't agree. */ if(H5FD_close(lf) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info") if(flags & H5F_ACC_TRUNC) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to truncate a file which is already open") if(flags & H5F_ACC_EXCL) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file exists") if((flags & H5F_ACC_RDWR) && 0 == (shared->flags & H5F_ACC_RDWR)) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file is already open for read-only") if((flags & H5F_ACC_SWMR_WRITE) && 0 == (shared->flags & H5F_ACC_SWMR_WRITE)) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "SWMR write access flag not the same for file that is already open") if((flags & H5F_ACC_SWMR_READ) && !((shared->flags & H5F_ACC_SWMR_WRITE) || (shared->flags & H5F_ACC_SWMR_READ) || (shared->flags & H5F_ACC_RDWR))) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "SWMR read access flag not the same for file that is already open") /* Allocate new "high-level" file struct */ if((file = H5F__new(shared, flags, fcpl_id, fapl_id, NULL)) == NULL) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to create new file object") } /* end if */ else { /* Check if tentative open was good enough */ if(flags != tent_flags) { /* * This file is not yet open by the library and the flags we used to * open it are different than the desired flags. Close the tentative * file and open it for real. */ if(H5FD_close(lf) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info") if(NULL == (lf = H5FD_open(name, flags, fapl_id, HADDR_UNDEF))) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file") } /* end if */ /* Place an advisory lock on the file */ if(use_file_locking) if(H5FD_lock(lf, (hbool_t)((flags & H5F_ACC_RDWR) ? TRUE : FALSE)) < 0) { /* Locking failed - Closing will remove the lock */ if(H5FD_close(lf) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info") HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to lock the file") } /* end if */ /* Create the 'top' file structure */ if(NULL == (file = H5F__new(NULL, flags, fcpl_id, fapl_id, lf))) { /* If this is the only time the file has been opened and the struct * returned is NULL, H5FD_close() will never be called via H5F_dest() * so we have to close lf here before heading to the error handling. */ if(H5FD_close(lf) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info") HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to initialize file structure") } /* end if */ /* Need to set status_flags in the superblock if the driver has a 'lock' method */ if(drvr->lock) set_flag = TRUE; } /* end else */ /* Check to see if both SWMR and cache image are requested. Fail if so */ if(H5C_cache_image_status(file, &ci_load, &ci_write) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get MDC cache image status") if((ci_load || ci_write) && (flags & (H5F_ACC_SWMR_READ | H5F_ACC_SWMR_WRITE))) HGOTO_ERROR(H5E_FILE, H5E_UNSUPPORTED, NULL, "can't have both SWMR and cache image") /* Retain the name the file was opened with */ file->open_name = H5MM_xstrdup(name); /* Short cuts */ shared = file->shared; lf = shared->lf; /* Get the file access property list, for future queries */ if(NULL == (a_plist = (H5P_genplist_t *)H5I_object(fapl_id))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not file access property list") /* Check if page buffering is enabled */ if(H5P_get(a_plist, H5F_ACS_PAGE_BUFFER_SIZE_NAME, &page_buf_size) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get page buffer size") if(page_buf_size) { #ifdef H5_HAVE_PARALLEL /* Collective metadata writes are not supported with page buffering */ if(file->coll_md_write) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "collective metadata writes are not supported with page buffering") /* Temporary: fail file create when page buffering feature is enabled for parallel */ HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "page buffering is disabled for parallel") #endif /* H5_HAVE_PARALLEL */ /* Query for other page buffer cache properties */ if(H5P_get(a_plist, H5F_ACS_PAGE_BUFFER_MIN_META_PERC_NAME, &page_buf_min_meta_perc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get minimum metadata fraction of page buffer") if(H5P_get(a_plist, H5F_ACS_PAGE_BUFFER_MIN_RAW_PERC_NAME, &page_buf_min_raw_perc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get minimum raw data fraction of page buffer") } /* end if */ /* * Read or write the file superblock, depending on whether the file is * empty or not. */ if(0 == (MAX(H5FD_get_eof(lf, H5FD_MEM_SUPER), H5FD_get_eoa(lf, H5FD_MEM_SUPER))) && (flags & H5F_ACC_RDWR)) { /* * We've just opened a fresh new file (or truncated one). We need * to create & write the superblock. */ /* Create the page buffer before initializing the superblock */ if(page_buf_size) if(H5PB_create(file, page_buf_size, page_buf_min_meta_perc, page_buf_min_raw_perc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create page buffer") /* Initialize information about the superblock and allocate space for it */ /* (Writes superblock extension messages, if there are any) */ if(H5F__super_init(file) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to allocate file superblock") /* Create and open the root group */ /* (This must be after the space for the superblock is allocated in * the file, since the superblock must be at offset 0) */ if(H5G_mkroot(file, TRUE) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create/open root group") } /* end if */ else if(1 == shared->nrefs) { /* Read the superblock if it hasn't been read before. */ if(H5F__super_read(file, a_plist, TRUE) < 0) HGOTO_ERROR(H5E_FILE, H5E_READERROR, NULL, "unable to read superblock") /* Create the page buffer before initializing the superblock */ if(page_buf_size) if(H5PB_create(file, page_buf_size, page_buf_min_meta_perc, page_buf_min_raw_perc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create page buffer") /* Open the root group */ if(H5G_mkroot(file, FALSE) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to read root group") } /* end if */ /* * Decide the file close degree. If it's the first time to open the * file, set the degree to access property list value; if it's the * second time or later, verify the access property list value matches * the degree in shared file structure. */ if(H5P_get(a_plist, H5F_ACS_CLOSE_DEGREE_NAME, &fc_degree) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get file close degree") /* This is a private property to clear the status_flags in the super block */ /* Use by h5clear and a routine in test/flush2.c to clear the test file's status_flags */ if(H5P_exist_plist(a_plist, H5F_ACS_CLEAR_STATUS_FLAGS_NAME) > 0) { if(H5P_get(a_plist, H5F_ACS_CLEAR_STATUS_FLAGS_NAME, &clear) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get clearance for status_flags") else if(clear) file->shared->sblock->status_flags = 0; } /* end if */ if(shared->nrefs == 1) { if(fc_degree == H5F_CLOSE_DEFAULT) shared->fc_degree = lf->cls->fc_degree; else shared->fc_degree = fc_degree; } /* end if */ else if(shared->nrefs > 1) { if(fc_degree == H5F_CLOSE_DEFAULT && shared->fc_degree != lf->cls->fc_degree) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "file close degree doesn't match") if(fc_degree != H5F_CLOSE_DEFAULT && fc_degree != shared->fc_degree) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "file close degree doesn't match") } /* end if */ /* Record the evict-on-close MDC behavior. If it's the first time opening * the file, set it to access property list value; if it's the second time * or later, verify that the access property list value matches the value * in shared file structure. */ if(H5P_get(a_plist, H5F_ACS_EVICT_ON_CLOSE_FLAG_NAME, &evict_on_close) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get evict on close value") if(shared->nrefs == 1) shared->evict_on_close = evict_on_close; else if(shared->nrefs > 1) { if(shared->evict_on_close != evict_on_close) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "file evict-on-close value doesn't match") } /* end if */ /* Formulate the absolute path for later search of target file for external links */ if(H5_build_extpath(name, &file->extpath) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to build extpath") /* Formulate the actual file name, after following symlinks, etc. */ if(H5F__build_actual_name(file, a_plist, name, &file->actual_name) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to build actual name") if(set_flag) { if(H5F_INTENT(file) & H5F_ACC_RDWR) { /* Set and check consistency of status_flags */ /* Skip check of status_flags for file with < superblock version 3 */ if(file->shared->sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_3) { if(file->shared->sblock->status_flags & H5F_SUPER_WRITE_ACCESS || file->shared->sblock->status_flags & H5F_SUPER_SWMR_WRITE_ACCESS) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file is already open for write/SWMR write (may use to clear file consistency flags)") } /* version 3 superblock */ file->shared->sblock->status_flags |= H5F_SUPER_WRITE_ACCESS; if(H5F_INTENT(file) & H5F_ACC_SWMR_WRITE) file->shared->sblock->status_flags |= H5F_SUPER_SWMR_WRITE_ACCESS; /* Flush the superblock & superblock extension */ if(H5F_super_dirty(file) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, NULL, "unable to mark superblock as dirty") if(H5F_flush_tagged_metadata(file, H5AC__SUPERBLOCK_TAG) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, NULL, "unable to flush superblock") if(H5F_flush_tagged_metadata(file, file->shared->sblock->ext_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, NULL, "unable to flush superblock extension") /* Remove the file lock for SWMR_WRITE */ if(use_file_locking && (H5F_INTENT(file) & H5F_ACC_SWMR_WRITE)) { if(H5FD_unlock(file->shared->lf) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to unlock the file") } /* end if */ } /* end if */ else { /* H5F_ACC_RDONLY: check consistency of status_flags */ /* Skip check of status_flags for file with < superblock version 3 */ if(file->shared->sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_3) { if(H5F_INTENT(file) & H5F_ACC_SWMR_READ) { if((file->shared->sblock->status_flags & H5F_SUPER_WRITE_ACCESS && !(file->shared->sblock->status_flags & H5F_SUPER_SWMR_WRITE_ACCESS)) || (!(file->shared->sblock->status_flags & H5F_SUPER_WRITE_ACCESS) && file->shared->sblock->status_flags & H5F_SUPER_SWMR_WRITE_ACCESS)) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file is not already open for SWMR writing") } /* end if */ else if((file->shared->sblock->status_flags & H5F_SUPER_WRITE_ACCESS) || (file->shared->sblock->status_flags & H5F_SUPER_SWMR_WRITE_ACCESS)) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file is already open for write (may use to clear file consistency flags)") } /* version 3 superblock */ } /* end else */ } /* end if set_flag */ /* Success */ ret_value = file; done: if((NULL == ret_value) && file) if(H5F__dest(file, FALSE) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, NULL, "problems closing file") FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_open() */ /*------------------------------------------------------------------------- * Function: H5F_flush_phase1 * * Purpose: First phase of flushing cached data. * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ static herr_t H5F__flush_phase1(H5F_t *f) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC /* Sanity check arguments */ HDassert(f); /* Flush any cached dataset storage raw data */ if(H5D_flush_all(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush dataset cache") /* Release any space allocated to space aggregators, so that the eoa value * corresponds to the end of the space written to in the file. */ /* (needs to happen before cache flush, with superblock write, since the * 'eoa' value is written in superblock -QAK) */ if(H5MF_free_aggrs(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file space") FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__flush_phase1() */ /*------------------------------------------------------------------------- * Function: H5F__flush_phase2 * * Purpose: Second phase of flushing cached data. * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ static herr_t H5F__flush_phase2(H5F_t *f, hbool_t closing) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC /* Sanity check arguments */ HDassert(f); /* Flush the entire metadata cache */ if(H5AC_flush(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush metadata cache") #ifdef H5_HAVE_PARALLEL if(H5F_HAS_FEATURE(f, H5FD_FEAT_HAS_MPI)) { /* Since we just returned from a call to H5AC_flush(), we just * passed through a barrier. Hence we can skip the barrier on * entry to the mpio file driver truncate call below, and the first * barrier in the following call to flush the cache again. */ H5CX_set_mpi_file_flushing(TRUE); } #endif /* H5_HAVE_PARALLEL */ /* Truncate the file to the current allocated size */ if(H5FD_truncate(f->shared->lf, closing) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "low level truncate failed") /* Flush the entire metadata cache again since the EOA could have changed in the truncate call. */ if(H5AC_flush(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush metadata cache") #ifdef H5_HAVE_PARALLEL if(H5F_HAS_FEATURE(f, H5FD_FEAT_HAS_MPI)) /* Reset the "flushing the file" flag */ H5CX_set_mpi_file_flushing(FALSE); #endif /* H5_HAVE_PARALLEL */ /* Flush out the metadata accumulator */ if(H5F__accum_flush(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush metadata accumulator") /* Flush the page buffer */ if(H5PB_flush(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_IO, H5E_CANTFLUSH, FAIL, "page buffer flush failed") /* Flush file buffers to disk. */ if(H5FD_flush(f->shared->lf, closing) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_IO, H5E_CANTFLUSH, FAIL, "low level flush failed") FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__flush_phase2() */ /*------------------------------------------------------------------------- * Function: H5F__flush * * Purpose: Flushes cached data. * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ herr_t H5F__flush(H5F_t *f) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check arguments */ HDassert(f); /* First phase of flushing data */ if(H5F__flush_phase1(f) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush file data") /* Second phase of flushing data */ if(H5F__flush_phase2(f, FALSE) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush file data") FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__flush() */ /*------------------------------------------------------------------------- * Function: H5F__close * * Purpose: Closes a file or causes the close operation to be pended. * This function is called two ways: from the API it gets called * by H5Fclose->H5I_dec_ref->H5F__close when H5I_dec_ref() * decrements the file ID reference count to zero. The file ID * is removed from the H5I_FILE group by H5I_dec_ref() just * before H5F__close() is called. If there are open object * headers then the close is pended by moving the file to the * H5I_FILE_CLOSING ID group (the f->closing contains the ID * assigned to file). * * This function is also called directly from H5O_close() when * the last object header is closed for the file and the file * has a pending close. * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ herr_t H5F__close(H5F_t *f) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ HDassert(f); /* Perform checks for "semi" file close degree here, since closing the * file is not allowed if there are objects still open. */ if(f->shared->fc_degree == H5F_CLOSE_SEMI) { unsigned nopen_files = 0; /* Number of open files in file/mount hierarchy */ unsigned nopen_objs = 0; /* Number of open objects in file/mount hierarchy */ /* Get the number of open objects and open files on this file/mount hierarchy */ if(H5F__mount_count_ids(f, &nopen_files, &nopen_objs) < 0) HGOTO_ERROR(H5E_SYM, H5E_MOUNT, FAIL, "problem checking mount hierarchy") /* If there are no other file IDs open on this file/mount hier., but * there are still open objects, issue an error and bail out now, * without decrementing the file ID's reference count and triggering * a "real" attempt at closing the file. */ if(nopen_files == 1 && nopen_objs > 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file, there are objects still open") } /* Reset the file ID for this file */ f->id_exists = FALSE; /* Attempt to close the file/mount hierarchy */ if(H5F_try_close(f, NULL) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__close() */ /*------------------------------------------------------------------------- * Function: H5F_try_close * * Purpose: Attempts to close a file due to one of several actions: * - The reference count on the file ID dropped to zero * - The last open object was closed in the file * - The file was unmounted * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ herr_t H5F_try_close(H5F_t *f, hbool_t *was_closed /*out*/) { unsigned nopen_files = 0; /* Number of open files in file/mount hierarchy */ unsigned nopen_objs = 0; /* Number of open objects in file/mount hierarchy */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* Sanity check */ HDassert(f); HDassert(f->shared); /* Set the was_closed flag to the default value. * This flag lets downstream code know if the file struct is * still accessible and/or likely to contain useful data. * It's needed by the evict-on-close code. Clients can ignore * this value by passing in NULL. */ if(was_closed) *was_closed = FALSE; /* Check if this file is already in the process of closing */ if(f->closing) { if(was_closed) *was_closed = TRUE; HGOTO_DONE(SUCCEED) } /* Get the number of open objects and open files on this file/mount hierarchy */ if(H5F__mount_count_ids(f, &nopen_files, &nopen_objs) < 0) HGOTO_ERROR(H5E_SYM, H5E_MOUNT, FAIL, "problem checking mount hierarchy") /* * Close file according to close degree: * * H5F_CLOSE_WEAK: if there are still objects open, wait until * they are all closed. * H5F_CLOSE_SEMI: if there are still objects open, return fail; * otherwise, close file. * H5F_CLOSE_STRONG: if there are still objects open, close them * first, then close file. */ switch(f->shared->fc_degree) { case H5F_CLOSE_WEAK: /* * If file or object IDS are still open then delay deletion of * resources until they have all been closed. Flush all * caches and update the object header anyway so that failing to * close all objects isn't a major problem. */ if((nopen_files + nopen_objs) > 0) HGOTO_DONE(SUCCEED) break; case H5F_CLOSE_SEMI: /* Can leave safely if file IDs are still open on this file */ if(nopen_files > 0) HGOTO_DONE(SUCCEED) /* Sanity check: If close degree if "semi" and we have gotten this * far and there are objects left open, bail out now. */ HDassert(nopen_files == 0 && nopen_objs == 0); /* If we've gotten this far (ie. there are no open objects in the file), fall through to flush & close */ break; case H5F_CLOSE_STRONG: /* If there are other open files in the hierarchy, we can leave now */ if(nopen_files > 0) HGOTO_DONE(SUCCEED) /* If we've gotten this far (ie. there are no open file IDs in the file/mount hierarchy), fall through to flush & close */ break; case H5F_CLOSE_DEFAULT: default: HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file, unknown file close degree") } /* end switch */ /* Mark this file as closing (prevents re-entering file shutdown code below) */ f->closing = TRUE; /* If the file close degree is "strong", close all the open objects in this file */ if(f->shared->fc_degree == H5F_CLOSE_STRONG) { HDassert(nopen_files == 0); /* Forced close of all opened objects in this file */ if(f->nopen_objs > 0) { size_t obj_count; /* # of open objects */ hid_t objs[128]; /* Array of objects to close */ herr_t result; /* Local result from obj ID query */ size_t u; /* Local index variable */ /* Get the list of IDs of open dataset, group, & attribute objects */ while((result = H5F_get_obj_ids(f, H5F_OBJ_LOCAL | H5F_OBJ_DATASET | H5F_OBJ_GROUP | H5F_OBJ_ATTR, (int)(sizeof(objs) / sizeof(objs[0])), objs, FALSE, &obj_count)) <= 0 && obj_count != 0 ) { /* Try to close all the open objects in this file */ for(u = 0; u < obj_count; u++) if(H5I_dec_ref(objs[u]) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't close object") } if(result < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "H5F_get_obj_ids failed(1)") /* Get the list of IDs of open named datatype objects */ /* (Do this separately from the dataset & attribute IDs, because * they could be using one of the named datatypes and then the * open named datatype ID will get closed twice) */ while((result = H5F_get_obj_ids(f, H5F_OBJ_LOCAL | H5F_OBJ_DATATYPE, (int)(sizeof(objs) / sizeof(objs[0])), objs, FALSE, &obj_count)) <= 0 && obj_count != 0) { /* Try to close all the open objects in this file */ for(u = 0; u < obj_count; u++) if(H5I_dec_ref(objs[u]) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't close object") } if(result < 0) HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_ids failed(2)") } /* end if */ } /* end if */ /* Check if this is a child file in a mounting hierarchy & proceed up the * hierarchy if so. */ if(f->parent) if(H5F_try_close(f->parent, NULL) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close parent file") /* Unmount and close each child before closing the current file. */ if(H5F__close_mounts(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't unmount child files") /* If there is more than one reference to the shared file struct and the * file has an external file cache, we should see if it can be closed. This * can happen if a cycle is formed with external file caches. */ if(f->shared->efc && (f->shared->nrefs > 1)) if(H5F__efc_try_close(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't attempt to close EFC") /* Delay flush until the shared file struct is closed, in H5F__dest. If the * application called H5Fclose, it would have been flushed in that function * (unless it will have been flushed in H5F_dest anyways). */ /* Destroy the H5F_t struct and decrement the reference count for the * shared H5F_file_t struct. If the reference count for the H5F_file_t * struct reaches zero then destroy it also. */ if(H5F__dest(f, TRUE) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "problems closing file") /* Since we closed the file, this should be set to TRUE */ if(was_closed) *was_closed = TRUE; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_try_close() */ /*------------------------------------------------------------------------- * Function: H5F__reopen * * Purpose: Reopen a file. The new file handle which is returned points * to the same file as the specified file handle. Both handles * share caches and other information. The only difference * between the handles is that the new handle is not mounted * anywhere and no files are mounted on it. * * Return: Success: A pointer to a file struct * * Failure: NULL * *------------------------------------------------------------------------- */ H5F_t * H5F__reopen(H5F_t *f) { H5F_t *ret_value = NULL; FUNC_ENTER_PACKAGE /* Get a new "top level" file struct, sharing the same "low level" file struct */ if(NULL == (ret_value = H5F__new(f->shared, 0, H5P_FILE_CREATE_DEFAULT, H5P_FILE_ACCESS_DEFAULT, NULL))) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to reopen file") /* Duplicate old file's names */ ret_value->open_name = H5MM_xstrdup(f->open_name); ret_value->actual_name = H5MM_xstrdup(f->actual_name); ret_value->extpath = H5MM_xstrdup(f->extpath); done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__reopen() */ /*------------------------------------------------------------------------- * Function: H5F_get_id * * Purpose: Get the file ID, incrementing it, or "resurrecting" it as * appropriate. * * Return: Success: An ID for a file * * Failure: H5I_INVALID_HID * *------------------------------------------------------------------------- */ hid_t H5F_get_id(H5F_t *file) { hid_t ret_value = H5I_INVALID_HID; /* Return value */ FUNC_ENTER_NOAPI_NOINIT HDassert(file); if(H5I_find_id(file, H5I_FILE, &ret_value) < 0 || H5I_INVALID_HID == ret_value) { /* resurrect the ID - Register an ID with the native driver */ if((ret_value = H5VL_native_register(H5I_FILE, file, FALSE)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to register group") file->id_exists = TRUE; } /* end if */ else { /* Increment reference count on existing ID */ if(H5I_inc_ref(ret_value, FALSE) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTSET, H5I_INVALID_HID, "incrementing file ID failed") } /* end else */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_get_id() */ /*------------------------------------------------------------------------- * Function: H5F_incr_nopen_objs * * Purpose: Increment the number of open objects for a file. * * Return: Success: The number of open objects, after the increment * Failure: (can't happen) *------------------------------------------------------------------------- */ unsigned H5F_incr_nopen_objs(H5F_t *f) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(f); FUNC_LEAVE_NOAPI(++f->nopen_objs) } /* end H5F_incr_nopen_objs() */ /*------------------------------------------------------------------------- * Function: H5F_decr_nopen_objs * * Purpose: Decrement the number of open objects for a file. * * Return: Success: The number of open objects, after the decrement * Failure: (can't happen) *------------------------------------------------------------------------- */ unsigned H5F_decr_nopen_objs(H5F_t *f) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(f); FUNC_LEAVE_NOAPI(--f->nopen_objs) } /* end H5F_decr_nopen_objs() */ /*------------------------------------------------------------------------- * Function: H5F__build_actual_name * * Purpose: Retrieve the name of a file, after following symlinks, etc. * * Note: Currently only working for "POSIX I/O compatible" VFDs * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ static herr_t H5F__build_actual_name(const H5F_t *f, const H5P_genplist_t *fapl, const char *name, char **actual_name/*out*/) { hid_t new_fapl_id = H5I_INVALID_HID; /* ID for duplicated FAPL */ #ifdef H5_HAVE_SYMLINK /* This has to be declared here to avoid unfreed resources on errors */ char *realname = NULL; /* Fully resolved path name of file */ #endif /* H5_HAVE_SYMLINK */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC /* Sanity check */ HDassert(f); HDassert(fapl); HDassert(name); HDassert(actual_name); /* Clear actual name pointer to begin with */ *actual_name = NULL; /* Assume that if the OS can't create symlinks, that we don't need to worry * about resolving them either. -QAK */ #ifdef H5_HAVE_SYMLINK /* Check for POSIX I/O compatible file handle */ if(H5F_HAS_FEATURE(f, H5FD_FEAT_POSIX_COMPAT_HANDLE)) { h5_stat_t lst; /* Stat info from lstat() call */ /* Call lstat() on the file's name */ if(HDlstat(name, &lst) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve stat info for file") /* Check for symbolic link */ if(S_IFLNK == (lst.st_mode & S_IFMT)) { H5P_genplist_t *new_fapl; /* Duplicated FAPL */ int *fd; /* POSIX I/O file descriptor */ h5_stat_t st; /* Stat info from stat() call */ h5_stat_t fst; /* Stat info from fstat() call */ hbool_t want_posix_fd; /* Flag for retrieving file descriptor from VFD */ /* Allocate realname buffer */ if(NULL == (realname = (char *)H5MM_calloc((size_t)PATH_MAX * sizeof(char)))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") /* Perform a sanity check that the file or link wasn't switched * between when we opened it and when we called lstat(). This is * according to the security best practices for lstat() documented * here: https://www.securecoding.cert.org/confluence/display/seccode/POS35-C.+Avoid+race+conditions+while+checking+for+the+existence+of+a+symbolic+link */ /* Copy the FAPL object to modify */ if((new_fapl_id = H5P_copy_plist(fapl, FALSE)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCOPY, FAIL, "unable to copy file access property list") if(NULL == (new_fapl = (H5P_genplist_t *)H5I_object(new_fapl_id))) HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "can't get property list") /* Set the character encoding on the new property list */ want_posix_fd = TRUE; if(H5P_set(new_fapl, H5F_ACS_WANT_POSIX_FD_NAME, &want_posix_fd) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set character encoding") /* Retrieve the file handle */ if(H5F_get_vfd_handle(f, new_fapl_id, (void **)&fd) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve POSIX file descriptor") /* Stat the filename we're resolving */ if(HDstat(name, &st) < 0) HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, FAIL, "unable to stat file") /* Stat the file we opened */ if(HDfstat(*fd, &fst) < 0) HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, FAIL, "unable to fstat file") /* Verify that the files are really the same */ if(st.st_mode != fst.st_mode || st.st_ino != fst.st_ino || st.st_dev != fst.st_dev) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "files' st_ino or st_dev fields changed!") /* Get the resolved path for the file name */ if(NULL == HDrealpath(name, realname)) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve real path for file") /* Duplicate the resolved path for the file name */ if(NULL == (*actual_name = (char *)H5MM_strdup(realname))) HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, FAIL, "can't duplicate real path") } /* end if */ } /* end if */ #endif /* H5_HAVE_SYMLINK */ /* Check if we've resolved the file's name */ if(NULL == *actual_name) { /* Just duplicate the name used to open the file */ if(NULL == (*actual_name = (char *)H5MM_strdup(name))) HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, FAIL, "can't duplicate open name") } /* end else */ done: /* Close the property list */ if(new_fapl_id > 0) if(H5I_dec_app_ref(new_fapl_id) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEOBJ, FAIL, "can't close duplicated FAPL") #ifdef H5_HAVE_SYMLINK if(realname) realname = (char *)H5MM_xfree(realname); #endif /* H5_HAVE_SYMLINK */ FUNC_LEAVE_NOAPI(ret_value) } /* H5F__build_actual_name() */ /*------------------------------------------------------------------------- * Function: H5F_addr_encode_len * * Purpose: Encodes an address into the buffer pointed to by *PP and * then increments the pointer to the first byte after the * address. An undefined value is stored as all 1's. * * Return: void *------------------------------------------------------------------------- */ void H5F_addr_encode_len(size_t addr_len, uint8_t **pp/*in,out*/, haddr_t addr) { unsigned u; /* Local index variable */ /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(addr_len); HDassert(pp && *pp); if(H5F_addr_defined(addr)) { for(u = 0; u < addr_len; u++) { *(*pp)++ = (uint8_t)(addr & 0xff); addr >>= 8; } /* end for */ HDassert("overflow" && 0 == addr); } /* end if */ else { for(u = 0; u < addr_len; u++) *(*pp)++ = 0xff; } /* end else */ FUNC_LEAVE_NOAPI_VOID } /* end H5F_addr_encode_len() */ /*------------------------------------------------------------------------- * Function: H5F_addr_encode * * Purpose: Encodes an address into the buffer pointed to by *PP and * then increments the pointer to the first byte after the * address. An undefined value is stored as all 1's. * * Return: void *------------------------------------------------------------------------- */ void H5F_addr_encode(const H5F_t *f, uint8_t **pp/*in,out*/, haddr_t addr) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(f); H5F_addr_encode_len(H5F_SIZEOF_ADDR(f), pp, addr); FUNC_LEAVE_NOAPI_VOID } /* end H5F_addr_encode() */ /*------------------------------------------------------------------------- * Function: H5F_addr_decode_len * * Purpose: Decodes an address from the buffer pointed to by *PP and * updates the pointer to point to the next byte after the * address. * * If the value read is all 1's then the address is returned * with an undefined value. * * Return: void *------------------------------------------------------------------------- */ void H5F_addr_decode_len(size_t addr_len, const uint8_t **pp/*in,out*/, haddr_t *addr_p/*out*/) { hbool_t all_zero = TRUE; /* True if address was all zeroes */ unsigned u; /* Local index variable */ /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(addr_len); HDassert(pp && *pp); HDassert(addr_p); /* Reset value in destination */ *addr_p = 0; /* Decode bytes from address */ for(u = 0; u < addr_len; u++) { uint8_t c; /* Local decoded byte */ /* Get decoded byte (and advance pointer) */ c = *(*pp)++; /* Check for non-undefined address byte value */ if(c != 0xff) all_zero = FALSE; if(u < sizeof(*addr_p)) { haddr_t tmp = c; /* Local copy of address, for casting */ /* Shift decoded byte to correct position */ tmp <<= (u * 8); /*use tmp to get casting right */ /* Merge into already decoded bytes */ *addr_p |= tmp; } /* end if */ else if(!all_zero) HDassert(0 == **pp); /*overflow */ } /* end for */ /* If 'all_zero' is still TRUE, the address was entirely composed of '0xff' * bytes, which is the encoded form of 'HADDR_UNDEF', so set the destination * to that value */ if(all_zero) *addr_p = HADDR_UNDEF; FUNC_LEAVE_NOAPI_VOID } /* end H5F_addr_decode_len() */ /*------------------------------------------------------------------------- * Function: H5F_addr_decode * * Purpose: Decodes an address from the buffer pointed to by *PP and * updates the pointer to point to the next byte after the * address. * * If the value read is all 1's then the address is returned * with an undefined value. * * Return: void *------------------------------------------------------------------------- */ void H5F_addr_decode(const H5F_t *f, const uint8_t **pp/*in,out*/, haddr_t *addr_p/*out*/) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(f); H5F_addr_decode_len(H5F_SIZEOF_ADDR(f), pp, addr_p); FUNC_LEAVE_NOAPI_VOID } /* end H5F_addr_decode() */ /*------------------------------------------------------------------------- * Function: H5F_set_grp_btree_shared * * Purpose: Set the grp_btree_shared field with a valid ref-count pointer. * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F_set_grp_btree_shared(H5F_t *f, H5UC_t *rc) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR /* Sanity check */ HDassert(f); HDassert(f->shared); HDassert(rc); f->shared->grp_btree_shared = rc; FUNC_LEAVE_NOAPI(SUCCEED) } /* H5F_set_grp_btree_shared() */ /*------------------------------------------------------------------------- * Function: H5F_set_sohm_addr * * Purpose: Set the sohm_addr field with a new value. * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F_set_sohm_addr(H5F_t *f, haddr_t addr) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR /* Sanity check */ HDassert(f); HDassert(f->shared); f->shared->sohm_addr = addr; FUNC_LEAVE_NOAPI(SUCCEED) } /* H5F_set_sohm_addr() */ /*------------------------------------------------------------------------- * Function: H5F_set_sohm_vers * * Purpose: Set the sohm_vers field with a new value. * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F_set_sohm_vers(H5F_t *f, unsigned vers) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR /* Sanity check */ HDassert(f); HDassert(f->shared); f->shared->sohm_vers = vers; FUNC_LEAVE_NOAPI(SUCCEED) } /* H5F_set_sohm_vers() */ /*------------------------------------------------------------------------- * Function: H5F_set_sohm_nindexes * * Purpose: Set the sohm_nindexes field with a new value. * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F_set_sohm_nindexes(H5F_t *f, unsigned nindexes) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR /* Sanity check */ HDassert(f); HDassert(f->shared); f->shared->sohm_nindexes = nindexes; FUNC_LEAVE_NOAPI(SUCCEED) } /* H5F_set_sohm_nindexes() */ /*------------------------------------------------------------------------- * Function: H5F_set_store_msg_crt_idx * * Purpose: Set the store_msg_crt_idx field with a new value. * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F_set_store_msg_crt_idx(H5F_t *f, hbool_t flag) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR /* Sanity check */ HDassert(f); HDassert(f->shared); f->shared->store_msg_crt_idx = flag; FUNC_LEAVE_NOAPI(SUCCEED) } /* H5F_set_store_msg_crt_idx() */ /*------------------------------------------------------------------------- * Function: H5F__set_libver_bounds() * * Purpose: Set the file's low and high bound to the input parameters * 'low' and 'high' respectively. * This is done only if the existing setting is different * from the inputs. * * Return: SUCCEED/FAIL * * Programmer: Vailin Choi; December 2017 * *------------------------------------------------------------------------- */ herr_t H5F__set_libver_bounds(H5F_t *f, H5F_libver_t low, H5F_libver_t high) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity checks */ HDassert(f); HDassert(f->shared); /* Set the bounds only if the existing setting is different from the inputs */ if(f->shared->low_bound != low || f->shared->high_bound != high) { /* Call the flush routine, for this file */ /* Note: This is done in case the binary format for representing a * metadata entry class changes when the file format low / high * bounds are changed and an unwritten entry of that class is * sitting in the metadata cache. * * If that happens, it's possible that the entry's size could * become larger, potentially corrupting the file (if the larger * entry is fully written, overwriting data outside its allocated * space), or corrupting the entry (if the entry is truncated to * fit into the allocated space). * * Although I'm not aware of any metadata with this behavior * currently, it would be very difficult to guard against and / or * detect, but if we flush everything here, the format version * for metadata entries in the cache will be finalized and these * sorts of problems can be avoided. * * QAK - April, 2018 */ if(H5F__flush(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush file's cached information") /* Set the new bounds */ f->shared->low_bound = low; f->shared->high_bound = high; } done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F__set_libver_bounds() */ /*------------------------------------------------------------------------- * Function: H5F__get_file_image * * Purpose: Private version of H5Fget_file_image * * Return: Success: Bytes copied / number of bytes needed. * Failure: -1 *------------------------------------------------------------------------- */ ssize_t H5F__get_file_image(H5F_t *file, void *buf_ptr, size_t buf_len) { H5FD_t *fd_ptr; /* file driver */ haddr_t eoa; /* End of file address */ ssize_t ret_value = -1; /* Return value */ FUNC_ENTER_PACKAGE /* Check args */ if(!file || !file->shared || !file->shared->lf) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, (-1), "file_id yields invalid file pointer") fd_ptr = file->shared->lf; if(!fd_ptr->cls) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, (-1), "fd_ptr yields invalid class pointer") /* the address space used by the split and multi file drivers is not * a good fit for this call. Since the plan is to depreciate these * drivers anyway, don't bother to do a "force fit". * * The following clause tests for the multi file driver, and fails * if the supplied file has the multi file driver as its top level * file driver. However, this test will not work if there is some * other file driver sitting on top of the multi file driver. * * I'm not sure if this is possible at present, but in all likelyhood, * it will become possible in the future. On the other hand, we may * remove the split/multi file drivers before then. * * I am leaving this solution in for now, but we should review it, * and improve the solution if necessary. * * JRM -- 11/11/22 */ if(HDstrcmp(fd_ptr->cls->name, "multi") == 0) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, (-1), "Not supported for multi file driver.") /* While the family file driver is conceptually fully compatible * with the get file image operation, it sets a file driver message * in the super block that prevents the image being opened with any * driver other than the family file driver. Needless to say, this * rather defeats the purpose of the get file image operation. * * While this problem is quire solvable, the required time and * resources are lacking at present. Hence, for now, we don't * allow the get file image operation to be perfomed on files * opened with the family file driver. * * Observe that the following test only looks at the top level * driver, and fails if there is some other driver sitting on to * of the family file driver. * * I don't think this can happen at present, but that may change * in the future. * JRM -- 12/21/11 */ if(HDstrcmp(fd_ptr->cls->name, "family") == 0) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, (-1), "Not supported for family file driver.") /* Go get the actual file size */ if(HADDR_UNDEF == (eoa = H5FD_get_eoa(file->shared->lf, H5FD_MEM_DEFAULT))) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, (-1), "unable to get file size") /* set ret_value = to eoa -- will overwrite this if appropriate */ ret_value = (ssize_t)eoa; /* test to see if a buffer was provided -- if not, we are done */ if(buf_ptr != NULL) { size_t space_needed; /* size of file image */ hsize_t tmp; size_t tmp_size; /* Check for buffer too small */ if((haddr_t)buf_len < eoa) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, (-1), "supplied buffer too small") space_needed = (size_t)eoa; /* read in the file image */ /* (Note compensation for base address addition in internal routine) */ if(H5FD_read(fd_ptr, H5FD_MEM_DEFAULT, 0, space_needed, buf_ptr) < 0) HGOTO_ERROR(H5E_FILE, H5E_READERROR, (-1), "file image read request failed") /* Offset to "status_flags" in the superblock */ tmp = H5F_SUPER_STATUS_FLAGS_OFF(file->shared->sblock->super_vers); /* Size of "status_flags" depends on the superblock version */ tmp_size = H5F_SUPER_STATUS_FLAGS_SIZE(file->shared->sblock->super_vers); /* Clear "status_flags" */ HDmemset((uint8_t *)(buf_ptr) + tmp, 0, tmp_size); } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F__get_file_image() */ /*------------------------------------------------------------------------- * Function: H5F__get_info * * Purpose: Private version of H5Fget_info * * Return: Success: SUCCEED * Failure: FAIL *------------------------------------------------------------------------- */ herr_t H5F__get_info(H5F_t *f, H5F_info2_t *finfo) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ HDassert(f); HDassert(f->shared); HDassert(finfo); /* Reset file info struct */ HDmemset(finfo, 0, sizeof(*finfo)); /* Get the size of the superblock and any superblock extensions */ if(H5F__super_size(f, &finfo->super.super_size, &finfo->super.super_ext_size) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to retrieve superblock sizes") /* Get the size of any persistent free space */ if(H5MF_get_freespace(f, &finfo->free.tot_space, &finfo->free.meta_size) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to retrieve free space information") /* Check for SOHM info */ if(H5F_addr_defined(f->shared->sohm_addr)) if(H5SM_ih_size(f, &finfo->sohm.hdr_size, &finfo->sohm.msgs_info) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to retrieve SOHM index & heap storage info") /* Set version # fields */ finfo->super.version = f->shared->sblock->super_vers; finfo->sohm.version = f->shared->sohm_vers; finfo->free.version = HDF5_FREESPACE_VERSION; done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F__get_info() */ /*------------------------------------------------------------------------- * Function: H5F_track_metadata_read_retries * * Purpose: To track the # of a "retries" (log10) for a metadata item. * This routine should be used only when: * "retries" > 0 * f->shared->read_attempts > 1 (does not have retry when 1) * f->shared->retries_nbins > 0 (calculated based on f->shared->read_attempts) * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F_track_metadata_read_retries(H5F_t *f, unsigned actype, unsigned retries) { unsigned log_ind; /* Index to the array of retries based on log10 of retries */ double tmp; /* Temporary value, to keep compiler quiet */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) /* Sanity check */ HDassert(f); HDassert(f->shared->read_attempts > 1); HDassert(f->shared->retries_nbins > 0); HDassert(retries > 0); HDassert(retries < f->shared->read_attempts); HDassert(actype < H5AC_NTYPES); /* Allocate memory for retries */ if(NULL == f->shared->retries[actype]) if(NULL == (f->shared->retries[actype] = (uint32_t *)H5MM_calloc((size_t)f->shared->retries_nbins * sizeof(uint32_t)))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") /* Index to retries based on log10 */ tmp = HDlog10((double)retries); log_ind = (unsigned)tmp; HDassert(log_ind < f->shared->retries_nbins); /* Increment the # of the "retries" */ f->shared->retries[actype][log_ind]++; done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F_track_metadata_read_retries() */ /*------------------------------------------------------------------------- * Function: H5F_set_retries * * Purpose: To initialize data structures for read retries: * --zero out "retries" * --set up "retries_nbins" based on read_attempts * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F_set_retries(H5F_t *f) { double tmp; /* Temporary variable */ /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR /* Sanity check */ HDassert(f); /* Initialize the tracking for metadata read retries */ HDmemset(f->shared->retries, 0, sizeof(f->shared->retries)); /* Initialize the # of bins for retries */ f->shared->retries_nbins = 0; if(f->shared->read_attempts > 1) { tmp = HDlog10((double)(f->shared->read_attempts - 1)); f->shared->retries_nbins = (unsigned)tmp + 1; } FUNC_LEAVE_NOAPI(SUCCEED) } /* H5F_set_retries() */ /*------------------------------------------------------------------------- * Function: H5F_object_flush_cb * * Purpose: To invoke the callback function for object flush that is set * in the file's access property list. * * Return: Success: SUCCEED * Failure: FAIL *------------------------------------------------------------------------- */ herr_t H5F_object_flush_cb(H5F_t *f, hid_t obj_id) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) /* Sanity check */ HDassert(f); HDassert(f->shared); /* Invoke object flush callback if there is one */ if(f->shared->object_flush.func && f->shared->object_flush.func(obj_id, f->shared->object_flush.udata) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "object flush callback returns error") done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F_object_flush_cb() */ /*------------------------------------------------------------------------- * Function: H5F__set_base_addr * * Purpose: Quick and dirty routine to set the file's 'base_addr' value * * Return: Non-negative on success/Negative on failure *------------------------------------------------------------------------- */ herr_t H5F__set_base_addr(const H5F_t *f, haddr_t addr) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE HDassert(f); HDassert(f->shared); /* Dispatch to driver */ if(H5FD_set_base_addr(f->shared->lf, addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "driver set_base_addr request failed") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__set_base_addr() */ /*------------------------------------------------------------------------- * Function: H5F__set_eoa * * Purpose: Quick and dirty routine to set the file's 'eoa' value * * Return: Non-negative on success/Negative on failure *------------------------------------------------------------------------- */ herr_t H5F__set_eoa(const H5F_t *f, H5F_mem_t type, haddr_t addr) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE HDassert(f); HDassert(f->shared); /* Dispatch to driver */ /* (H5FD_set_eoa() will add base_addr to addr) */ if(H5FD_set_eoa(f->shared->lf, type, addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "driver set_eoa request failed") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__set_eoa() */ /*------------------------------------------------------------------------- * Function: H5F__set_paged_aggr * * Purpose: Quick and dirty routine to set the file's paged_aggr mode * * Return: Non-negative on success/Negative on failure *------------------------------------------------------------------------- */ herr_t H5F__set_paged_aggr(const H5F_t *f, hbool_t paged) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ HDassert(f); HDassert(f->shared); /* Dispatch to driver */ if(H5FD_set_paged_aggr(f->shared->lf, paged) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "driver set paged aggr mode failed") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__set_paged_aggr() */ /*------------------------------------------------------------------------- * Function: H5F__get_max_eof_eoa * * Purpose: Determine the maximum of (EOA, EOF) for the file * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ herr_t H5F__get_max_eof_eoa(const H5F_t *f, haddr_t *max_eof_eoa) { haddr_t eof; /* Relative address for EOF */ haddr_t eoa; /* Relative address for EOA */ haddr_t tmp_max; herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity checks */ HDassert(f); HDassert(f->shared); /* Get the relative EOA and EOF */ eoa = H5FD_get_eoa(f->shared->lf, H5FD_MEM_DEFAULT); eof = H5FD_get_eof(f->shared->lf, H5FD_MEM_DEFAULT); /* Determine the maximum */ tmp_max = MAX(eof, eoa); if(HADDR_UNDEF == tmp_max) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "file get eof/eoa requests failed") *max_eof_eoa = tmp_max; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__get_max_eof_eoa() */ #ifdef H5_HAVE_PARALLEL /*------------------------------------------------------------------------- * Function: H5F_set_coll_md_read * * Purpose: Set the coll_md_read field with a new value. * * Return: SUCCEED/FAIL *------------------------------------------------------------------------- */ void H5F_set_coll_md_read(H5F_t *f, H5P_coll_md_read_flag_t cmr) { /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOERR /* Sanity check */ HDassert(f); f->coll_md_read = cmr; FUNC_LEAVE_NOAPI_VOID } /* H5F_set_coll_md_read() */ #endif /* H5_HAVE_PARALLEL */ /*------------------------------------------------------------------------- * Function: H5F_get_metadata_read_retry_info * * Purpose: Private function to retrieve the collection of read retries * for metadata items with checksum. * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ herr_t H5F_get_metadata_read_retry_info(H5F_t *file, H5F_retry_info_t *info) { unsigned i, j; /* Local index variable */ size_t tot_size; /* Size of each retries[i] */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) /* Check args */ HDassert(file); HDassert(info); /* Copy the # of bins for "retries" array */ info->nbins = file->shared->retries_nbins; /* Initialize the array of "retries" */ HDmemset(info->retries, 0, sizeof(info->retries)); /* Return if there are no bins -- no retries */ if(!info->nbins) HGOTO_DONE(SUCCEED); /* Calculate size for each retries[i] */ tot_size = info->nbins * sizeof(uint32_t); /* Map and copy information to info's retries for metadata items with tracking for read retries */ j = 0; for(i = 0; i < H5AC_NTYPES; i++) { switch (i) { case H5AC_OHDR_ID: case H5AC_OHDR_CHK_ID: case H5AC_BT2_HDR_ID: case H5AC_BT2_INT_ID: case H5AC_BT2_LEAF_ID: case H5AC_FHEAP_HDR_ID: case H5AC_FHEAP_DBLOCK_ID: case H5AC_FHEAP_IBLOCK_ID: case H5AC_FSPACE_HDR_ID: case H5AC_FSPACE_SINFO_ID: case H5AC_SOHM_TABLE_ID: case H5AC_SOHM_LIST_ID: case H5AC_EARRAY_HDR_ID: case H5AC_EARRAY_IBLOCK_ID: case H5AC_EARRAY_SBLOCK_ID: case H5AC_EARRAY_DBLOCK_ID: case H5AC_EARRAY_DBLK_PAGE_ID: case H5AC_FARRAY_HDR_ID: case H5AC_FARRAY_DBLOCK_ID: case H5AC_FARRAY_DBLK_PAGE_ID: case H5AC_SUPERBLOCK_ID: HDassert(j < H5F_NUM_METADATA_READ_RETRY_TYPES); if(file->shared->retries[i] != NULL) { /* Allocate memory for retries[i] * * This memory should be released by the user with * the H5free_memory() call. */ if(NULL == (info->retries[j] = (uint32_t *)H5MM_malloc(tot_size))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") /* Copy the information */ HDmemcpy(info->retries[j], file->shared->retries[i], tot_size); } /* Increment location in info->retries[] array */ j++; break; default: break; } } done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_get_metadata_read_retry_info() */ /*------------------------------------------------------------------------- * Function: H5F__start_swmr_write * * Purpose: Private version of H5Fstart_swmr_write * * 1) Refresh opened objects: part 1 * 2) Flush & reset accumulator * 3) Mark the file in SWMR writing mode * 4) Set metadata read attempts and retries info * 5) Disable accumulator * 6) Evict all cache entries except the superblock * 7) Refresh opened objects (part 2) * 8) Unlock the file * * Pre-conditions: * * 1) The file being opened has v3 superblock * 2) The file is opened with H5F_ACC_RDWR * 3) The file is not already marked for SWMR writing * 4) Current implementaion for opened objects: * --only allow datasets and groups without attributes * --disallow named datatype with/without attributes * --disallow opened attributes attached to objects * * NOTE: Currently, only opened groups and datasets are allowed * when enabling SWMR via H5Fstart_swmr_write(). * Will later implement a different approach-- * set up flush dependency/proxy even for file opened without * SWMR to resolve issues with opened objects. * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ herr_t H5F__start_swmr_write(H5F_t *f) { hbool_t ci_load = FALSE; /* whether MDC ci load requested */ hbool_t ci_write = FALSE; /* whether MDC CI write requested */ size_t grp_dset_count = 0; /* # of open objects: groups & datasets */ size_t nt_attr_count = 0; /* # of opened named datatypes + opened attributes */ hid_t *obj_ids = NULL; /* List of ids */ H5G_loc_t *obj_glocs = NULL; /* Group location of the object */ H5O_loc_t *obj_olocs = NULL; /* Object location */ H5G_name_t *obj_paths = NULL; /* Group hierarchy path */ size_t u; /* Local index variable */ hbool_t setup = FALSE; /* Boolean flag to indicate whether SWMR setting is enabled */ H5VL_t *vol_plugin = NULL; /* VOL plugin for the file */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ HDassert(f); HDassert(f->shared); /* Should have write permission */ if((H5F_INTENT(f) & H5F_ACC_RDWR) == 0) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "no write intent on file") /* Check superblock version */ if(f->shared->sblock->super_vers < HDF5_SUPERBLOCK_VERSION_3) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file superblock version - should be at least 3") /* Check for correct file format version */ if((f->shared->low_bound != H5F_LIBVER_V110) || (f->shared->high_bound != H5F_LIBVER_V110)) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file format version does not support SWMR - needs to be 1.10 or greater") /* Should not be marked for SWMR writing mode already */ if(f->shared->sblock->status_flags & H5F_SUPER_SWMR_WRITE_ACCESS) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file already in SWMR writing mode") /* Check to see if cache image is enabled. Fail if so */ if(H5C_cache_image_status(f, &ci_load, &ci_write) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get MDC cache image status") if(ci_load || ci_write ) HGOTO_ERROR(H5E_FILE, H5E_UNSUPPORTED, FAIL, "can't have both SWMR and MDC cache image") /* Flush the superblock extension */ if(H5F_flush_tagged_metadata(f, f->shared->sblock->ext_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock extension") /* Flush data buffers */ if(H5F__flush(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush file's cached information") /* Get the # of opened named datatypes and attributes */ if(H5F_get_obj_count(f, H5F_OBJ_DATATYPE|H5F_OBJ_ATTR, FALSE, &nt_attr_count) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "H5F_get_obj_count failed") if(nt_attr_count) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "named datatypes and/or attributes opened in the file") /* Get the # of opened datasets and groups */ if(H5F_get_obj_count(f, H5F_OBJ_GROUP|H5F_OBJ_DATASET, FALSE, &grp_dset_count) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "H5F_get_obj_count failed") if(grp_dset_count) { /* Allocate space for group and object locations */ if((obj_ids = (hid_t *) H5MM_malloc(grp_dset_count * sizeof(hid_t))) == NULL) HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for hid_t") if((obj_glocs = (H5G_loc_t *) H5MM_malloc(grp_dset_count * sizeof(H5G_loc_t))) == NULL) HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5G_loc_t") if((obj_olocs = (H5O_loc_t *) H5MM_malloc(grp_dset_count * sizeof(H5O_loc_t))) == NULL) HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5O_loc_t") if((obj_paths = (H5G_name_t *) H5MM_malloc(grp_dset_count * sizeof(H5G_name_t))) == NULL) HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5G_name_t") /* Get the list of opened object ids (groups & datasets) */ if(H5F_get_obj_ids(f, H5F_OBJ_GROUP|H5F_OBJ_DATASET, grp_dset_count, obj_ids, FALSE, &grp_dset_count) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "H5F_get_obj_ids failed") /* Save the VOL plugin for the refresh step */ if(grp_dset_count > 0) { H5VL_object_t *vol_obj = NULL; if(NULL == (vol_obj = H5VL_vol_object(obj_ids[0]))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid object identifier") vol_plugin = vol_obj->plugin; } /* end if */ /* Refresh opened objects (groups, datasets) in the file */ for(u = 0; u < grp_dset_count; u++) { H5O_loc_t *oloc; /* object location */ H5G_loc_t tmp_loc; /* Set up the id's group location */ obj_glocs[u].oloc = &obj_olocs[u]; obj_glocs[u].path = &obj_paths[u]; H5G_loc_reset(&obj_glocs[u]); /* get the id's object location */ if((oloc = H5O_get_loc(obj_ids[u])) == NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an object") /* Make deep local copy of object's location information */ H5G_loc(obj_ids[u], &tmp_loc); H5G_loc_copy(&obj_glocs[u], &tmp_loc, H5_COPY_DEEP); /* Close the object */ if(H5I_dec_ref(obj_ids[u]) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTCLOSEOBJ, FAIL, "decrementing object ID failed") } /* end for */ } /* end if */ /* Flush and reset the accumulator */ if(H5F__accum_reset(f, TRUE) < 0) HGOTO_ERROR(H5E_IO, H5E_CANTRESET, FAIL, "can't reset accumulator") /* Turn on SWMR write in shared file open flags */ f->shared->flags |= H5F_ACC_SWMR_WRITE; /* Mark the file in SWMR writing mode */ f->shared->sblock->status_flags |= H5F_SUPER_SWMR_WRITE_ACCESS; /* Set up metadata read attempts */ f->shared->read_attempts = H5F_SWMR_METADATA_READ_ATTEMPTS; /* Initialize "retries" and "retries_nbins" */ if(H5F_set_retries(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "can't set retries and retries_nbins") /* Turn off usage of accumulator */ f->shared->feature_flags &= ~(unsigned)H5FD_FEAT_ACCUMULATE_METADATA; if(H5FD_set_feature_flags(f->shared->lf, f->shared->feature_flags) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "can't set feature_flags in VFD") setup = TRUE; /* Mark superblock as dirty */ if(H5F_super_dirty(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty") /* Flush the superblock */ if(H5F_flush_tagged_metadata(f, H5AC__SUPERBLOCK_TAG) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock") /* Evict all flushed entries in the cache except the pinned superblock */ if(H5F__evict_cache_entries(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to evict file's cached information") /* Refresh (reopen) the objects (groups & datasets) in the file */ for(u = 0; u < grp_dset_count; u++) if(H5O_refresh_metadata_reopen(obj_ids[u], &obj_glocs[u], vol_plugin, TRUE) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't refresh-close object") /* Unlock the file */ if(H5FD_unlock(f->shared->lf) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, FAIL, "unable to unlock the file") done: if(ret_value < 0 && setup) { /* Re-enable accumulator */ f->shared->feature_flags |= (unsigned)H5FD_FEAT_ACCUMULATE_METADATA; if(H5FD_set_feature_flags(f->shared->lf, f->shared->feature_flags) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "can't set feature_flags in VFD") /* Reset the # of read attempts */ f->shared->read_attempts = H5F_METADATA_READ_ATTEMPTS; if(H5F_set_retries(f) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "can't set retries and retries_nbins") /* Un-set H5F_ACC_SWMR_WRITE in shared open flags */ f->shared->flags &= ~H5F_ACC_SWMR_WRITE; /* Unmark the file: not in SWMR writing mode */ f->shared->sblock->status_flags &= (uint8_t)(~H5F_SUPER_SWMR_WRITE_ACCESS); /* Mark superblock as dirty */ if(H5F_super_dirty(f) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty") /* Flush the superblock */ if(H5F_flush_tagged_metadata(f, H5AC__SUPERBLOCK_TAG) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock") } /* end if */ /* Free memory */ if(obj_ids) H5MM_xfree(obj_ids); if(obj_glocs) H5MM_xfree(obj_glocs); if(obj_olocs) H5MM_xfree(obj_olocs); if(obj_paths) H5MM_xfree(obj_paths); FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__start_swmr_write() */ /*------------------------------------------------------------------------- * Function: H5F__format_convert * * Purpose: Private version of H5Fformat_convert * * Return: Success: SUCCEED * Failure: FAIL *------------------------------------------------------------------------- */ herr_t H5F__format_convert(H5F_t *f) { hbool_t mark_dirty = FALSE; /* Whether to mark the file's superblock dirty */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ HDassert(f); HDassert(f->shared); /* Check if the superblock should be downgraded */ if(f->shared->sblock->super_vers > HDF5_SUPERBLOCK_VERSION_V18_LATEST) { f->shared->sblock->super_vers = HDF5_SUPERBLOCK_VERSION_V18_LATEST; mark_dirty = TRUE; } /* Check for persistent freespace manager, which needs to be downgraded */ if(!(f->shared->fs_strategy == H5F_FILE_SPACE_STRATEGY_DEF && f->shared->fs_persist == H5F_FREE_SPACE_PERSIST_DEF && f->shared->fs_threshold == H5F_FREE_SPACE_THRESHOLD_DEF && f->shared->fs_page_size == H5F_FILE_SPACE_PAGE_SIZE_DEF)) { /* Check to remove free-space manager info message from superblock extension */ if(H5F_addr_defined(f->shared->sblock->ext_addr)) if(H5F__super_ext_remove_msg(f, H5O_FSINFO_ID) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "error in removing message from superblock extension") /* Close freespace manager */ if(H5MF_try_close(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "unable to free free-space address") /* Set non-persistent freespace manager */ f->shared->fs_strategy = H5F_FILE_SPACE_STRATEGY_DEF; f->shared->fs_persist = H5F_FREE_SPACE_PERSIST_DEF; f->shared->fs_threshold = H5F_FREE_SPACE_THRESHOLD_DEF; f->shared->fs_page_size = H5F_FILE_SPACE_PAGE_SIZE_DEF; /* Indicate that the superblock should be marked dirty */ mark_dirty = TRUE; } /* end if */ /* Check if we should mark the superblock dirty */ if(mark_dirty) /* Mark superblock as dirty */ if(H5F_super_dirty(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty") done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F__format_convert() */ /*------------------------------------------------------------------------- * Function: H5F_get_file_id * * Purpose: The private version of H5Iget_file_id(), obtains the file * ID given an object ID. * * Return: Success: The file ID associated with the object * Failure: H5I_INVALID_HID * *------------------------------------------------------------------------- */ hid_t H5F_get_file_id(hid_t obj_id, H5I_type_t type) { H5VL_object_t *vol_obj; void *file = NULL; hbool_t vol_wrapper_set = FALSE; /* Whether the VOL object wrapping context was set up */ hid_t ret_value = H5I_INVALID_HID; /* Return value */ FUNC_ENTER_NOAPI(H5I_INVALID_HID) /* Get the object pointer */ if(NULL == (vol_obj = H5VL_vol_object(obj_id))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "invalid identifier") /* Set wrapper info in API context */ if(H5VL_set_vol_wrapper(vol_obj->data, vol_obj->plugin) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, H5I_INVALID_HID, "can't set VOL wrapper info") vol_wrapper_set = TRUE; /* Get the file through the VOL */ if(H5VL_file_optional(vol_obj->data, vol_obj->plugin->cls, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL, H5VL_FILE_GET_FILE, type, &file) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, H5I_INVALID_HID, "unable to get file") if(NULL == file) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, H5I_INVALID_HID, "unable to get the file through the VOL") /* Check if the file's ID already exists */ if(H5I_find_id(file, H5I_FILE, &ret_value) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, H5I_INVALID_HID, "getting file ID failed") /* If the ID does not exist, register it with the VOL plugin */ if(H5I_INVALID_HID == ret_value) { { void *vol_wrap_ctx = NULL; /* Object wrapping context */ /* Retrieve the VOL object wrap context */ if(H5CX_get_vol_wrap_ctx((void **)&vol_wrap_ctx) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTGET, H5I_INVALID_HID, "can't get VOL object wrap context") HDassert(vol_wrap_ctx); } if ((ret_value = H5VL_wrap_register(H5I_FILE, file, TRUE)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to atomize file handle") } /* end if */ else { /* Increment ref count on existing ID */ if(H5I_inc_ref(ret_value, TRUE) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, H5I_INVALID_HID, "incrementing file ID failed") } /* end else */ done: /* Reset object wrapping info in API context */ if(vol_wrapper_set && H5VL_reset_vol_wrapper() < 0) HDONE_ERROR(H5E_FILE, H5E_CANTSET, H5I_INVALID_HID, "can't reset VOL wrapper info") FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_get_file_id() */