/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 */ /****************/ #define H5F_PACKAGE /*suppress error about including H5Fpkg */ /* Interface initialization */ #define H5_INTERFACE_INIT_FUNC H5F_init_interface /***********/ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ #include "H5Aprivate.h" /* Attributes */ #include "H5ACprivate.h" /* Metadata cache */ #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 "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 */ /* Predefined file drivers */ #include "H5FDcore.h" /* temporary in-memory files */ #include "H5FDfamily.h" /* family of files */ #include "H5FDlog.h" /* sec2 driver with logging, for debugging */ #include "H5FDmpi.h" /* MPI-based file drivers */ #include "H5FDmulti.h" /* multiple files partitioned by mem usage */ #include "H5FDsec2.h" /* Posix unbuffered I/O */ #include "H5FDstdio.h" /* Standard C buffered I/O */ #ifdef H5_HAVE_WINDOWS #include "H5FDwindows.h" /* Windows buffered I/O */ #endif #include "H5FDdirect.h" /* Linux direct I/O */ /****************/ /* 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 int H5F_get_objects_cb(void *obj_ptr, hid_t obj_id, void *key); static herr_t H5F_build_actual_name(const H5F_t *f, const H5P_genplist_t *fapl, const char *name, char ** /*out*/ actual_name); /* Declare a free list to manage the H5F_t struct */ /*********************/ /* 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_init_interface * * Purpose: Initialize interface-specific information. * * Return: Success: non-negative * Failure: negative * * Programmer: Robb Matzke * Friday, November 20, 1998 * *------------------------------------------------------------------------- */ static herr_t H5F_init_interface(void) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT_NOERR FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_init_interface() */ /*------------------------------------------------------------------------- * 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 */ void * driver_info = NULL; 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_INTERNAL, 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_LATEST_FORMAT_NAME, &(f->shared->latest_format)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set 'latest format' flag") 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") /* * Since we're resetting the driver ID and info, close them if they * exist in this new property list. */ if (H5P_facc_close(ret_value, NULL) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTFREE, H5I_INVALID_HID, "can't free the old driver information") /* Increment the reference count on the driver ID and insert it into the property list */ if (H5I_inc_ref(f->shared->lf->driver_id, FALSE) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINC, H5I_INVALID_HID, "unable to increment ref count on VFL driver") if (H5P_set(new_plist, H5F_ACS_FILE_DRV_ID_NAME, &(f->shared->lf->driver_id)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set file driver ID") /* Set the driver "info" in the property list */ driver_info = H5FD_fapl_get(f->shared->lf); if (driver_info != NULL && H5P_set(new_plist, H5F_ACS_FILE_DRV_INFO_NAME, &driver_info) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set file driver 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: 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_INTERNAL, 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_INTERNAL, 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 *--------------------------------------------------------------------------- */ 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_NOAPI_NOINIT /* 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; } /* end if */ else { olist.file_info.local = FALSE; olist.file_info.ptr.shared = f ? f->shared : NULL; } /* end else */ /* 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)") } /* end if */ /* 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_index < olist.max_nobjs)) { if (types & H5F_OBJ_DATASET) { olist.obj_type = H5I_DATASET; if (H5I_iterate(H5I_DATASET, H5F_get_objects_cb, &olist, app_ref) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(2)") } /* end if */ } /* 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 group IDs to count number of groups, and put their * IDs on the object list */ if (!olist.max_nobjs || (olist.max_nobjs && olist.list_index < olist.max_nobjs)) { if (types & H5F_OBJ_GROUP) { olist.obj_type = H5I_GROUP; if (H5I_iterate(H5I_GROUP, H5F_get_objects_cb, &olist, app_ref) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(3)") } } /* 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 datatype IDs to count number of named datatypes, and put their * IDs on the object list */ if (!olist.max_nobjs || (olist.max_nobjs && olist.list_index < olist.max_nobjs)) { if (types & H5F_OBJ_DATATYPE) { olist.obj_type = H5I_DATATYPE; if (H5I_iterate(H5I_DATATYPE, H5F_get_objects_cb, &olist, app_ref) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(4)") } /* end if */ } /* 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 attribute IDs to count number of attributes, and put their * IDs on the object list */ if (!olist.max_nobjs || (olist.max_nobjs && olist.list_index < olist.max_nobjs)) { if (types & H5F_OBJ_ATTR) { olist.obj_type = H5I_ATTR; if (H5I_iterate(H5I_ATTR, H5F_get_objects_cb, &olist, app_ref) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(5)") } /* end if */ } /* Set the number of objects currently open */ *obj_id_count_ptr = obj_id_count; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_get_objects() */ /*------------------------------------------------------------------------- * Function: H5F_get_objects_cb * * Purpose: H5F_get_objects' callback function. It verifies if an * object is in the file, and either count it or put its ID * on the list. * * Return: H5_ITER_STOP if the array of object IDs is filled up. * H5_ITER_CONT otherwise. *------------------------------------------------------------------------- */ static int H5F_get_objects_cb(void *obj_ptr, hid_t obj_id, void *key) { H5F_olist_t *olist = (H5F_olist_t *)key; /* Alias for search info */ hbool_t add_obj = FALSE; int ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT HDassert(obj_ptr); HDassert(olist); /* Count file IDs */ if (olist->obj_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; } /* end if */ } /* end if */ 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_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 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 if */ } /* end else */ if (TRUE == 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++; } /* end if */ /* 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_is_hdf5 * * Purpose: Check the file signature to detect an HDF5 file. * * Bugs: This function is not robust: it only uses the default file * driver when attempting to open the file when in fact it * should use all known file drivers. * * Return: TRUE/FALSE/FAIL *------------------------------------------------------------------------- */ htri_t H5F_is_hdf5(const char *name) { H5FD_t *file = NULL; /* Low-level file struct */ haddr_t sig_addr = HADDR_UNDEF; /* Addess of hdf5 file signature */ htri_t ret_value = FAIL; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* Open the file at the virtual file layer */ if (NULL == (file = H5FD_open(name, H5F_ACC_RDONLY, H5P_FILE_ACCESS_DEFAULT, 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, H5AC_ind_dxpl_g, &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 && ret_value >= 0) 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_NOAPI_NOINIT if (NULL == (f = H5FL_CALLOC(H5F_t))) HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, NULL, "can't allocate top file structure") f->file_id = H5I_INVALID_HID; 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; for (u = 0; u < NELMTS(f->shared->fs_addr); u++) f->shared->fs_addr[u] = HADDR_UNDEF; f->shared->accum.loc = HADDR_UNDEF; f->shared->lf = lf; /* * 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); /* 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_LATEST_FORMAT_NAME, &(f->shared->latest_format)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'latest format' 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") /* 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") 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); /* * 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)) < 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, hid_t dxpl_id, hbool_t flush) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* Sanity check */ HDassert(f); HDassert(f->shared); if (1 == f->shared->nrefs) { H5F_io_info_t fio_info; /* I/O info for operation */ /* Flush at this point since the file will be closed. * Only try to flush the file if it was opened with write access, and if * the caller requested a flush. */ if ((f->shared->flags & H5F_ACC_RDWR) && flush) if (H5F_flush(f, dxpl_id, TRUE) < 0) HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush cache") /* Release the external file cache */ if (f->shared->efc) { if (H5F_efc_destroy(f->shared->efc) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't destroy external file cache") f->shared->efc = NULL; } /* end if */ /* 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) */ if (H5F_ACC_RDWR & H5F_INTENT(f)) { if (H5MF_close(f, dxpl_id) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file free space info") /* Flush the file again (if requested), as shutting down the * free space manager may dirty some data structures again. */ if (flush) if (H5F_flush(f, dxpl_id, TRUE) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush cache") } /* end if */ /* 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 */ /* 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 */ if (H5AC_dest(f, dxpl_id)) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file") /* * 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 */ /* Set up I/O info for operation */ fio_info.f = f; if (NULL == (fio_info.dxpl = (H5P_genplist_t *)H5I_object(dxpl_id))) HDONE_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list") /* Destroy other components of the file */ if (H5F__accum_reset(&fio_info, 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; /* 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. * * 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, hid_t dxpl_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 */ H5F_t * ret_value; /*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") /* * 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) { #ifndef H5_USING_MEMCHECKER time_t mytime = HDtime(NULL); HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: time = %s, name = '%s', tent_flags = %x", HDctime(&mytime), name, tent_flags) #else /* H5_USING_MEMCHECKER */ HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: name = '%s', tent_flags = %x", name, tent_flags) #endif /* H5_USING_MEMCHECKER */ } /* end if */ H5E_clear_stack(NULL); tent_flags = flags; if (NULL == (lf = H5FD_open(name, tent_flags, fapl_id, HADDR_UNDEF))) { #ifndef H5_USING_MEMCHECKER time_t mytime = HDtime(NULL); HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: time = %s, name = '%s', tent_flags = %x", HDctime(&mytime), name, tent_flags) #else /* H5_USING_MEMCHECKER */ HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: name = '%s', tent_flags = %x", name, tent_flags) #endif /* H5_USING_MEMCHECKER */ } /* end if */ } /* 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). */ 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") /* 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) { file = NULL; /*to prevent destruction of wrong file*/ HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info") } /* end if */ if (NULL == (lf = H5FD_open(name, flags, fapl_id, HADDR_UNDEF))) { file = NULL; /*to prevent destruction of wrong file*/ HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file") } /* end if */ } /* end if */ if (NULL == (file = H5F_new(NULL, flags, fcpl_id, fapl_id, lf))) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to create new file object") } /* end else */ /* Retain the name the file was opened with */ file->open_name = H5MM_xstrdup(name); /* Short cuts */ shared = file->shared; lf = shared->lf; /* * Read or write the file superblock, depending on whether the file is * empty or not. */ if (0 == H5FD_get_eof(lf) && (flags & H5F_ACC_RDWR)) { /* * We've just opened a fresh new file (or truncated one). We need * to create & write the superblock. */ /* Initialize information about the superblock and allocate space for it */ /* (Writes superblock extension messages, if there are any) */ if (H5F_super_init(file, dxpl_id) < 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, dxpl_id, TRUE) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create/open root group") } else if (1 == shared->nrefs) { /* Read the superblock if it hasn't been read before. */ if (H5F_super_read(file, dxpl_id) < 0) HGOTO_ERROR(H5E_FILE, H5E_READERROR, NULL, "unable to read superblock") /* Open the root group */ if (H5G_mkroot(file, dxpl_id, FALSE) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to read root group") } /* end if */ /* 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") /* * 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") if (shared->nrefs == 1) { if (fc_degree == H5F_CLOSE_DEFAULT) shared->fc_degree = lf->cls->fc_degree; else shared->fc_degree = fc_degree; } 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 */ /* 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") /* Success */ ret_value = file; done: if (!ret_value && file) if (H5F_dest(file, dxpl_id, FALSE) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, NULL, "problems closing file") FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_open() */ /*------------------------------------------------------------------------- * Function: H5F_flush * * Purpose: Flushes cached data. * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ herr_t H5F_flush(H5F_t *f, hid_t dxpl_id, hbool_t closing) { H5F_io_info_t fio_info; /* I/O info for operation */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) /* Sanity check arguments */ HDassert(f); /* Flush any cached dataset storage raw data */ if (H5D_flush(f, dxpl_id) < 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, dxpl_id) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file space") /* Flush the entire metadata cache */ if (H5AC_flush(f, dxpl_id) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush metadata cache") /* Truncate the file to the current allocated size */ if (H5FD_truncate(f->shared->lf, dxpl_id, closing) < 0) 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, dxpl_id) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush metadata cache") /* Set up I/O info for operation */ fio_info.f = f; if (NULL == (fio_info.dxpl = (H5P_genplist_t *)H5I_object(dxpl_id))) HDONE_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list") /* Flush out the metadata accumulator */ if (H5F__accum_flush(&fio_info) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush metadata accumulator") /* Flush file buffers to disk. */ if (H5FD_flush(f->shared->lf, dxpl_id, closing) < 0) /* Push error, but keep going*/ HDONE_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "low level flush failed") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_flush() */ /*------------------------------------------------------------------------- * Function: H5F_close * * Purpose: Internal routine to close a file. * * Return: SUCCEED/FAIL * *------------------------------------------------------------------------- */ herr_t H5F_close(H5F_t *f) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* Sanity check */ HDassert(f); HDassert(f->file_id > 0); /* This routine should only be called when a file ID's ref count drops to zero */ /* 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->file_id = -1; /* Attempt to close the file/mount hierarchy */ if (H5F_try_close(f) < 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) { 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); /* Check if this file is already in the process of closing */ if (f->closing) 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_INTERNAL, 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) < 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, H5AC_dxpl_id, TRUE) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "problems closing file") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F_try_close() */ /*------------------------------------------------------------------------- * 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, hbool_t app_ref) { hid_t ret_value = H5I_INVALID_HID; /* Return value */ FUNC_ENTER_NOAPI_NOINIT HDassert(file); if (file->file_id == H5I_INVALID_HID) { /* Get an atom for the file */ if ((file->file_id = H5I_register(H5I_FILE, file, app_ref)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to atomize file") } else { /* Increment reference count on existing ID */ if (H5I_inc_ref(file->file_id, app_ref) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTSET, H5I_INVALID_HID, "incrementing file ID failed") } /* end else */ ret_value = file->file_id; 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 */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* 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 */ char realname[PATH_MAX]; /* Fully resolved path name of file */ hbool_t want_posix_fd; /* Flag for retrieving file descriptor from VFD */ /* 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") 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, H5RC_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_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_NOAPI_NOINIT /* 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 performed 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 */ /* 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, H5AC_ind_dxpl_g, H5FD_MEM_DEFAULT, 0, space_needed, buf_ptr) < 0) HGOTO_ERROR(H5E_FILE, H5E_READERROR, (-1), "file image read request failed") } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F_get_file_image() */