/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * This file contains macros & information for file access
 */

#ifndef H5Fprivate_H
#define H5Fprivate_H

/* This definition has to be early, before the other private headers,
 * due to circular dependencies.
 */
typedef struct H5F_t H5F_t;

/* Include package's public header */
#include "H5Fpublic.h"

/* Private headers needed by this file */
#include "H5FDprivate.h" /* File drivers                 */
#ifdef H5_HAVE_PARALLEL
#include "H5Pprivate.h" /* Property lists               */
#endif
#include "H5VLprivate.h" /* Virtual Object Layer         */

/**************************/
/* Library Private Macros */
/**************************/

/* If the module using this macro is allowed access to the private variables, access them directly */
#ifdef H5F_MODULE
#define H5F_LOW_BOUND(F)                 ((F)->shared->low_bound)
#define H5F_HIGH_BOUND(F)                ((F)->shared->high_bound)
#define H5F_SHARED_INTENT(F_SH)          ((F_SH)->flags)
#define H5F_INTENT(F)                    ((F)->shared->flags)
#define H5F_OPEN_NAME(F)                 ((F)->open_name)
#define H5F_ACTUAL_NAME(F)               ((F)->actual_name)
#define H5F_EXTPATH(F)                   ((F)->shared->extpath)
#define H5F_SHARED(F)                    ((F)->shared)
#define H5F_SAME_SHARED(F1, F2)          ((F1)->shared == (F2)->shared)
#define H5F_NOPEN_OBJS(F)                ((F)->nopen_objs)
#define H5F_INCR_NOPEN_OBJS(F)           ((F)->nopen_objs++)
#define H5F_DECR_NOPEN_OBJS(F)           ((F)->nopen_objs--)
#define H5F_ID_EXISTS(F)                 ((F)->id_exists)
#define H5F_PARENT(F)                    ((F)->parent)
#define H5F_NMOUNTS(F)                   ((F)->nmounts)
#define H5F_GET_READ_ATTEMPTS(F)         ((F)->shared->read_attempts)
#define H5F_DRIVER_ID(F)                 ((F)->shared->lf->driver_id)
#define H5F_GET_FILENO(F, FILENUM)       ((FILENUM) = (F)->shared->lf->fileno)
#define H5F_SHARED_HAS_FEATURE(F_SH, FL) ((F_SH)->lf->feature_flags & (FL))
#define H5F_HAS_FEATURE(F, FL)           ((F)->shared->lf->feature_flags & (FL))
#define H5F_BASE_ADDR(F)                 ((F)->shared->sblock->base_addr)
#define H5F_SYM_LEAF_K(F)                ((F)->shared->sblock->sym_leaf_k)
#define H5F_KVALUE(F, T)                 ((F)->shared->sblock->btree_k[(T)->id])
#define H5F_NREFS(F)                     ((F)->shared->nrefs)
#define H5F_SIZEOF_ADDR(F)               ((F)->shared->sizeof_addr)
#define H5F_SIZEOF_SIZE(F)               ((F)->shared->sizeof_size)
#define H5F_SOHM_ADDR(F)                 ((F)->shared->sohm_addr)
#define H5F_SET_SOHM_ADDR(F, A)          ((F)->shared->sohm_addr = (A))
#define H5F_SOHM_VERS(F)                 ((F)->shared->sohm_vers)
#define H5F_SET_SOHM_VERS(F, V)          ((F)->shared->sohm_vers = (V))
#define H5F_SOHM_NINDEXES(F)             ((F)->shared->sohm_nindexes)
#define H5F_SET_SOHM_NINDEXES(F, N)      ((F)->shared->sohm_nindexes = (N))
#define H5F_FCPL(F)                      ((F)->shared->fcpl_id)
#define H5F_GET_FC_DEGREE(F)             ((F)->shared->fc_degree)
#define H5F_EVICT_ON_CLOSE(F)            ((F)->shared->evict_on_close)
#define H5F_RDCC_NSLOTS(F)               ((F)->shared->rdcc_nslots)
#define H5F_RDCC_NBYTES(F)               ((F)->shared->rdcc_nbytes)
#define H5F_RDCC_W0(F)                   ((F)->shared->rdcc_w0)
#define H5F_SIEVE_BUF_SIZE(F)            ((F)->shared->sieve_buf_size)
#define H5F_GC_REF(F)                    ((F)->shared->gc_ref)
#define H5F_STORE_MSG_CRT_IDX(F)         ((F)->shared->store_msg_crt_idx)
#define H5F_SET_STORE_MSG_CRT_IDX(F, FL) ((F)->shared->store_msg_crt_idx = (FL))
#define H5F_GRP_BTREE_SHARED(F)          ((F)->shared->grp_btree_shared)
#define H5F_SET_GRP_BTREE_SHARED(F, RC)  (((F)->shared->grp_btree_shared = (RC)) ? SUCCEED : FAIL)
#define H5F_USE_TMP_SPACE(F)             ((F)->shared->fs.use_tmp_space)
#define H5F_IS_TMP_ADDR(F, ADDR)         (H5_addr_le((F)->shared->fs.tmp_addr, (ADDR)))
#ifdef H5_HAVE_PARALLEL
#define H5F_COLL_MD_READ(F)           ((F)->shared->coll_md_read)
#define H5F_SHARED_COLL_MD_READ(F_SH) ((F_SH)->coll_md_read)
#endif /* H5_HAVE_PARALLEL */
#define H5F_USE_MDC_LOGGING(F)         ((F)->shared->use_mdc_logging)
#define H5F_START_MDC_LOG_ON_ACCESS(F) ((F)->shared->start_mdc_log_on_access)
#define H5F_MDC_LOG_LOCATION(F)        ((F)->shared->mdc_log_location)
#define H5F_ALIGNMENT(F)               ((F)->shared->alignment)
#define H5F_THRESHOLD(F)               ((F)->shared->threshold)
#define H5F_PGEND_META_THRES(F)        ((F)->shared->fs.pgend_meta_thres)
#define H5F_POINT_OF_NO_RETURN(F)      ((F)->shared->fs.point_of_no_return)
#define H5F_NULL_FSM_ADDR(F)           ((F)->shared->null_fsm_addr)
#define H5F_GET_MIN_DSET_OHDR(F)       ((F)->shared->crt_dset_min_ohdr_flag)
#define H5F_SET_MIN_DSET_OHDR(F, V)    ((F)->shared->crt_dset_min_ohdr_flag = (V))
#define H5F_VOL_CLS(F)                 ((F)->shared->vol_cls)
#define H5F_VOL_OBJ(F)                 ((F)->vol_obj)
#define H5F_USE_FILE_LOCKING(F)        ((F)->shared->use_file_locking)
#define H5F_RFIC_FLAGS(F)              ((F)->shared->rfic_flags)
#else /* H5F_MODULE */
#define H5F_LOW_BOUND(F)                 (H5F_get_low_bound(F))
#define H5F_HIGH_BOUND(F)                (H5F_get_high_bound(F))
#define H5F_SHARED_INTENT(F_SH)          (H5F_shared_get_intent(F_SH))
#define H5F_INTENT(F)                    (H5F_get_intent(F))
#define H5F_OPEN_NAME(F)                 (H5F_get_open_name(F))
#define H5F_ACTUAL_NAME(F)               (H5F_get_actual_name(F))
#define H5F_EXTPATH(F)                   (H5F_get_extpath(F))
#define H5F_SHARED(F)                    (H5F_get_shared(F))
#define H5F_SAME_SHARED(F1, F2)          (H5F_same_shared((F1), (F2)))
#define H5F_NOPEN_OBJS(F)                (H5F_get_nopen_objs(F))
#define H5F_INCR_NOPEN_OBJS(F)           (H5F_incr_nopen_objs(F))
#define H5F_DECR_NOPEN_OBJS(F)           (H5F_decr_nopen_objs(F))
#define H5F_ID_EXISTS(F)                 (H5F_file_id_exists(F))
#define H5F_PARENT(F)                    (H5F_get_parent(F))
#define H5F_NMOUNTS(F)                   (H5F_get_nmounts(F))
#define H5F_GET_READ_ATTEMPTS(F)         (H5F_get_read_attempts(F))
#define H5F_DRIVER_ID(F)                 (H5F_get_driver_id(F))
#define H5F_GET_FILENO(F, FILENUM)       (H5F_get_fileno((F), &(FILENUM)))
#define H5F_SHARED_HAS_FEATURE(F_SH, FL) (H5F_shared_has_feature(F_SH, FL))
#define H5F_HAS_FEATURE(F, FL)           (H5F_has_feature(F, FL))
#define H5F_BASE_ADDR(F)                 (H5F_get_base_addr(F))
#define H5F_SYM_LEAF_K(F)                (H5F_sym_leaf_k(F))
#define H5F_KVALUE(F, T)                 (H5F_Kvalue(F, T))
#define H5F_NREFS(F)                     (H5F_get_nrefs(F))
#define H5F_SIZEOF_ADDR(F)               (H5F_sizeof_addr(F))
#define H5F_SIZEOF_SIZE(F)               (H5F_sizeof_size(F))
#define H5F_SOHM_ADDR(F)                 (H5F_get_sohm_addr(F))
#define H5F_SET_SOHM_ADDR(F, A)          (H5F_set_sohm_addr((F), (A)))
#define H5F_SOHM_VERS(F)                 (H5F_get_sohm_vers(F))
#define H5F_SET_SOHM_VERS(F, V)          (H5F_set_sohm_vers((F), (V)))
#define H5F_SOHM_NINDEXES(F)             (H5F_get_sohm_nindexes(F))
#define H5F_SET_SOHM_NINDEXES(F, N)      (H5F_set_sohm_nindexes((F), (N)))
#define H5F_FCPL(F)                      (H5F_get_fcpl(F))
#define H5F_GET_FC_DEGREE(F)             (H5F_get_fc_degree(F))
#define H5F_EVICT_ON_CLOSE(F)            (H5F_get_evict_on_close(F))
#define H5F_RDCC_NSLOTS(F)               (H5F_rdcc_nslots(F))
#define H5F_RDCC_NBYTES(F)               (H5F_rdcc_nbytes(F))
#define H5F_RDCC_W0(F)                   (H5F_rdcc_w0(F))
#define H5F_SIEVE_BUF_SIZE(F)            (H5F_sieve_buf_size(F))
#define H5F_GC_REF(F)                    (H5F_gc_ref(F))
#define H5F_STORE_MSG_CRT_IDX(F)         (H5F_store_msg_crt_idx(F))
#define H5F_SET_STORE_MSG_CRT_IDX(F, FL) (H5F_set_store_msg_crt_idx((F), (FL)))
#define H5F_GRP_BTREE_SHARED(F)          (H5F_grp_btree_shared(F))
#define H5F_SET_GRP_BTREE_SHARED(F, RC)  (H5F_set_grp_btree_shared((F), (RC)))
#define H5F_USE_TMP_SPACE(F)             (H5F_use_tmp_space(F))
#define H5F_IS_TMP_ADDR(F, ADDR)         (H5F_is_tmp_addr((F), (ADDR)))
#ifdef H5_HAVE_PARALLEL
#define H5F_COLL_MD_READ(F)           (H5F_coll_md_read(F))
#define H5F_SHARED_COLL_MD_READ(F_SH) (H5F_shared_coll_md_read(F))
#endif /* H5_HAVE_PARALLEL */
#define H5F_USE_MDC_LOGGING(F)         (H5F_use_mdc_logging(F))
#define H5F_START_MDC_LOG_ON_ACCESS(F) (H5F_start_mdc_log_on_access(F))
#define H5F_MDC_LOG_LOCATION(F)        (H5F_mdc_log_location(F))
#define H5F_ALIGNMENT(F)               (H5F_get_alignment(F))
#define H5F_THRESHOLD(F)               (H5F_get_threshold(F))
#define H5F_PGEND_META_THRES(F)        (H5F_get_pgend_meta_thres(F))
#define H5F_POINT_OF_NO_RETURN(F)      (H5F_get_point_of_no_return(F))
#define H5F_NULL_FSM_ADDR(F)           (H5F_get_null_fsm_addr(F))
#define H5F_GET_MIN_DSET_OHDR(F)       (H5F_get_min_dset_ohdr(F))
#define H5F_SET_MIN_DSET_OHDR(F, V)    (H5F_set_min_dset_ohdr((F), (V)))
#define H5F_VOL_CLS(F)                 (H5F_get_vol_cls(F))
#define H5F_VOL_OBJ(F)                 (H5F_get_vol_obj(F))
#define H5F_USE_FILE_LOCKING(F)        (H5F_get_use_file_locking(F))
#define H5F_RFIC_FLAGS(F)              (H5F_get_rfic_flags(F))
#endif /* H5F_MODULE */

/* Macros to encode/decode offset/length's for storing in the file */
#define H5F_ENCODE_LENGTH(f, p, l) H5_ENCODE_LENGTH_LEN(p, l, H5F_SIZEOF_SIZE(f))
#define H5F_DECODE_LENGTH(f, p, l) H5_DECODE_LENGTH_LEN(p, l, H5F_SIZEOF_SIZE(f))

/*
 * Macros that check for overflows.  These are somewhat dangerous to fiddle
 * with.
 */
#if (H5_SIZEOF_SIZE_T >= H5_SIZEOF_OFF_T)
#define H5F_OVERFLOW_SIZET2OFFT(X) ((size_t)(X) >= (size_t)((size_t)1 << (8 * sizeof(HDoff_t) - 1)))
#else
#define H5F_OVERFLOW_SIZET2OFFT(X) 0
#endif
#if (H5_SIZEOF_HSIZE_T >= H5_SIZEOF_OFF_T)
#define H5F_OVERFLOW_HSIZET2OFFT(X) ((hsize_t)(X) >= (hsize_t)((hsize_t)1 << (8 * sizeof(HDoff_t) - 1)))
#else
#define H5F_OVERFLOW_HSIZET2OFFT(X) 0
#endif

/* Sizes of object addresses & sizes in the file (in bytes) */
#define H5F_OBJ_ADDR_SIZE sizeof(haddr_t)
#define H5F_OBJ_SIZE_SIZE sizeof(hsize_t)

/* File-wide default character encoding can not yet be set via the file
 * creation property list and is always ASCII. */
#define H5F_DEFAULT_CSET H5T_CSET_ASCII

/* ========= File Creation properties ============ */
#define H5F_CRT_USER_BLOCK_NAME    "block_size"  /* Size of the file user block in bytes */
#define H5F_CRT_SYM_LEAF_NAME      "symbol_leaf" /* 1/2 rank for symbol table leaf nodes */
#define H5F_CRT_SYM_LEAF_DEF       4
#define H5F_CRT_BTREE_RANK_NAME    "btree_rank"    /* 1/2 rank for btree internal nodes    */
#define H5F_CRT_ADDR_BYTE_NUM_NAME "addr_byte_num" /* Byte number in an address            */
#define H5F_CRT_OBJ_BYTE_NUM_NAME  "obj_byte_num"  /* Byte number for object size          */
#define H5F_CRT_SUPER_VERS_NAME    "super_version" /* Version number of the superblock     */
/* Number of shared object header message indexes */
#define H5F_CRT_SHMSG_NINDEXES_NAME    "num_shmsg_indexes"
#define H5F_CRT_SHMSG_INDEX_TYPES_NAME "shmsg_message_types" /* Types of message in each index */
/* Minimum size of messages in each index */
#define H5F_CRT_SHMSG_INDEX_MINSIZE_NAME  "shmsg_message_minsize"
#define H5F_CRT_SHMSG_LIST_MAX_NAME       "shmsg_list_max"       /* Shared message list maximum size */
#define H5F_CRT_SHMSG_BTREE_MIN_NAME      "shmsg_btree_min"      /* Shared message B-tree minimum size */
#define H5F_CRT_FILE_SPACE_STRATEGY_NAME  "file_space_strategy"  /* File space handling strategy */
#define H5F_CRT_FREE_SPACE_PERSIST_NAME   "free_space_persist"   /* Free-space persisting status */
#define H5F_CRT_FREE_SPACE_THRESHOLD_NAME "free_space_threshold" /* Free space section threshold */
#define H5F_CRT_FILE_SPACE_PAGE_SIZE_NAME "file_space_page_size" /* File space page size */

/* ========= File Access properties ============ */
#define H5F_ACS_META_CACHE_INIT_CONFIG_NAME                                                                  \
    "mdc_initCacheCfg"                                  /* Initial metadata cache resize configuration */
#define H5F_ACS_DATA_CACHE_NUM_SLOTS_NAME "rdcc_nslots" /* Size of raw data chunk cache(slots) */
#define H5F_ACS_DATA_CACHE_BYTE_SIZE_NAME "rdcc_nbytes" /* Size of raw data chunk cache(bytes) */
#define H5F_ACS_PREEMPT_READ_CHUNKS_NAME  "rdcc_w0"     /* Preemption read chunks first */
#define H5F_ACS_ALIGN_THRHD_NAME          "threshold"   /* Threshold for alignment */
#define H5F_ACS_ALIGN_NAME                "align"       /* Alignment */
#define H5F_ACS_META_BLOCK_SIZE_NAME                                                                         \
    "meta_block_size" /* Minimum metadata allocation block size (when aggregating metadata allocations) */
#define H5F_ACS_SIEVE_BUF_SIZE_NAME                                                                          \
    "sieve_buf_size" /* Maximum sieve buffer size (when data sieving is allowed by file driver) */
#define H5F_ACS_SDATA_BLOCK_SIZE_NAME                                                                        \
    "sdata_block_size" /* Minimum "small data" allocation block size (when aggregating "small" raw data      \
                          allocations) */
#define H5F_ACS_GARBG_COLCT_REF_NAME "gc_ref"             /* Garbage-collect references */
#define H5F_ACS_FILE_DRV_NAME        "vfd_info"           /* File driver ID & info */
#define H5F_ACS_VOL_CONN_NAME        "vol_connector_info" /* VOL connector ID & info */
#define H5F_ACS_CLOSE_DEGREE_NAME    "close_degree"       /* File close degree */
#define H5F_ACS_FAMILY_OFFSET_NAME   "family_offset"      /* Offset position in file for family file driver */
#define H5F_ACS_FAMILY_NEWSIZE_NAME                                                                          \
    "family_newsize" /* New member size of family driver.  (private property only used by h5repart) */
#define H5F_ACS_FAMILY_TO_SINGLE_NAME                                                                        \
    "family_to_single" /* Whether to convert family to a single-file driver.  (private property only used by \
                          h5repart) */
#define H5F_ACS_MULTI_TYPE_NAME        "multi_type"        /* Data type in multi file driver */
#define H5F_ACS_LIBVER_LOW_BOUND_NAME  "libver_low_bound"  /* 'low' bound of library format versions */
#define H5F_ACS_LIBVER_HIGH_BOUND_NAME "libver_high_bound" /* 'high' bound of library format versions */
#define H5F_ACS_WANT_POSIX_FD_NAME                                                                           \
    "want_posix_fd" /* Internal: query the file descriptor from the core VFD, instead of the memory address  \
                     */
#define H5F_ACS_METADATA_READ_ATTEMPTS_NAME "metadata_read_attempts" /* # of metadata read attempts */
#define H5F_ACS_OBJECT_FLUSH_CB_NAME        "object_flush_cb"        /* Object flush callback */
#define H5F_ACS_EFC_SIZE_NAME               "efc_size"               /* Size of external file cache */
#define H5F_ACS_FILE_IMAGE_INFO_NAME                                                                         \
    "file_image_info" /* struct containing initial file image and callback info */
#define H5F_ACS_CLEAR_STATUS_FLAGS_NAME                                                                      \
    "clear_status_flags" /* Whether to clear superblock status_flags (private property only used by h5clear) \
                          */
#define H5F_ACS_NULL_FSM_ADDR_NAME "null_fsm_addr" /* Nullify addresses of free-space managers */
/* Private property used only by h5clear */
#define H5F_ACS_SKIP_EOF_CHECK_NAME "skip_eof_check" /* Skip EOF check */
/* Private property used only by h5clear */
#define H5F_ACS_USE_MDC_LOGGING_NAME  "use_mdc_logging"  /* Whether to use metadata cache logging */
#define H5F_ACS_MDC_LOG_LOCATION_NAME "mdc_log_location" /* Name of metadata cache log location */
#define H5F_ACS_START_MDC_LOG_ON_ACCESS_NAME                                                                 \
    "start_mdc_log_on_access" /* Whether logging starts on file create/open */
#define H5F_ACS_EVICT_ON_CLOSE_FLAG_NAME                                                                     \
    "evict_on_close_flag" /* Whether or not the metadata cache will evict objects on close */
#define H5F_ACS_COLL_MD_WRITE_FLAG_NAME                                                                      \
    "collective_metadata_write" /* property indicating whether metadata writes are done collectively or not  \
                                 */
#define H5F_ACS_META_CACHE_INIT_IMAGE_CONFIG_NAME                                                            \
    "mdc_initCacheImageCfg" /* Initial metadata cache image creation configuration */
#define H5F_ACS_PAGE_BUFFER_SIZE_NAME "page_buffer_size" /* the maximum size for the page buffer cache */
#define H5F_ACS_PAGE_BUFFER_MIN_META_PERC_NAME                                                               \
    "page_buffer_min_meta_perc" /* the min metadata percentage for the page buffer cache */
#define H5F_ACS_PAGE_BUFFER_MIN_RAW_PERC_NAME                                                                \
    "page_buffer_min_raw_perc" /* the min raw data percentage for the page buffer cache */
#define H5F_ACS_USE_FILE_LOCKING_NAME                                                                        \
    "use_file_locking" /* whether or not we use file locks for SWMR control and to prevent multiple writers  \
                        */
#define H5F_ACS_IGNORE_DISABLED_FILE_LOCKS_NAME                                                              \
    "ignore_disabled_file_locks" /* whether or not we ignore "locks disabled" errors */
#ifdef H5_HAVE_PARALLEL
#define H5F_ACS_MPI_PARAMS_COMM_NAME "mpi_params_comm" /* the MPI communicator */
#define H5F_ACS_MPI_PARAMS_INFO_NAME "mpi_params_info" /* the MPI info struct */
#endif                                                 /* H5_HAVE_PARALLEL */
#define H5F_ACS_RFIC_FLAGS_NAME "rfic_flags"           /* Relaxed file integrity check (RFIC) flags */

/* ======================== File Mount properties ====================*/
#define H5F_MNT_SYM_LOCAL_NAME "local" /* Whether absolute symlinks local to file. */

#ifdef H5_HAVE_PARALLEL
/* Which process writes metadata */
#define H5_PAR_META_WRITE 0
#endif /* H5_HAVE_PARALLEL */

/* Define the HDF5 file signature */
#define H5F_SIGNATURE     "\211HDF\r\n\032\n"
#define H5F_SIGNATURE_LEN 8

/* Version number's of the major components of the file format */
#define HDF5_SUPERBLOCK_VERSION_DEF 0 /* The default super block format      */
#define HDF5_SUPERBLOCK_VERSION_1   1 /* Version with non-default B-tree 'K' value */
#define HDF5_SUPERBLOCK_VERSION_2   2 /* Revised version with superblock extension and checksum */
#define HDF5_SUPERBLOCK_VERSION_3                                                                            \
    3 /* With file locking and consistency flags (at least this version for SWMR support) */
#define HDF5_SUPERBLOCK_VERSION_LATEST HDF5_SUPERBLOCK_VERSION_3 /* The maximum super block format    */
#define HDF5_SUPERBLOCK_VERSION_V18_LATEST                                                                   \
    HDF5_SUPERBLOCK_VERSION_2       /* The latest superblock version for v18 */
#define HDF5_FREESPACE_VERSION    0 /* of the Free-Space Info      */
#define HDF5_OBJECTDIR_VERSION    0 /* of the Object Directory format */
#define HDF5_SHAREDHEADER_VERSION 0 /* of the Shared-Header Info      */
#define HDF5_DRIVERINFO_VERSION_0 0 /* of the Driver Information Block*/

/* B-tree internal 'K' values */
#define HDF5_BTREE_SNODE_IK_DEF 16
#define HDF5_BTREE_CHUNK_IK_DEF                                                                              \
    32                                  /* Note! this value is assumed                                       \
                                           to be 32 for version 0                                            \
                                           of the superblock and                                             \
                                           if it is changed, the code                                        \
                                           must compensate. -QAK                                             \
                                        */
#define HDF5_BTREE_IK_MAX_ENTRIES 65536 /* 2^16 - 2 bytes for storing entries (children) */
/* See format specification on version 1 B-trees */

/* Default file space handling strategy */
#define H5F_FILE_SPACE_STRATEGY_DEF H5F_FSPACE_STRATEGY_FSM_AGGR

/* Default free space section threshold used by free-space managers */
#define H5F_FREE_SPACE_PERSIST_DEF false

/* Default free space section threshold used by free-space managers */
#define H5F_FREE_SPACE_THRESHOLD_DEF 1

/* For paged aggregation: default file space page size when not set */
#define H5F_FILE_SPACE_PAGE_SIZE_DEF 4096
/* For paged aggregation: minimum value for file space page size */
#define H5F_FILE_SPACE_PAGE_SIZE_MIN 512
/* For paged aggregation: maximum value for file space page size: 1 gigabyte */
#define H5F_FILE_SPACE_PAGE_SIZE_MAX 1024 * 1024 * 1024

/* For paged aggregation: drop free-space with size <= this threshold for small meta section */
#define H5F_FILE_SPACE_PGEND_META_THRES 0

/* Default for threshold for alignment (can be set via H5Pset_alignment()) */
#define H5F_ALIGN_DEF 1
/* Default for alignment (can be set via H5Pset_alignment()) */
#define H5F_ALIGN_THRHD_DEF 1
/* Default size for meta data aggregation block (can be set via H5Pset_meta_block_size()) */
#define H5F_META_BLOCK_SIZE_DEF 2048
/* Default size for small data aggregation block (can be set via H5Pset_small_data_block_size()) */
#define H5F_SDATA_BLOCK_SIZE_DEF 2048

/* Check for file using paged aggregation */
#define H5F_SHARED_PAGED_AGGR(F_SH) ((F_SH)->fs_strategy == H5F_FSPACE_STRATEGY_PAGE && (F_SH)->fs_page_size)
#define H5F_PAGED_AGGR(F)           (F->shared->fs_strategy == H5F_FSPACE_STRATEGY_PAGE && F->shared->fs_page_size)

/* Metadata read attempt values */
#define H5F_METADATA_READ_ATTEMPTS      1   /* Default # of read attempts for non-SWMR access */
#define H5F_SWMR_METADATA_READ_ATTEMPTS 100 /* Default # of read attempts for SWMR access */

/* Macros to define signatures of all objects in the file */

/* Size of signature information (on disk) */
/* (all on-disk signatures should be this length) */
#define H5_SIZEOF_MAGIC 4

/* Size of checksum information (on disk) */
/* (all on-disk checksums should be this length) */
#define H5_SIZEOF_CHKSUM 4

/* v1 B-tree node signature */
#define H5B_MAGIC "TREE"

/* v2 B-tree signatures */
#define H5B2_HDR_MAGIC  "BTHD" /* Header */
#define H5B2_INT_MAGIC  "BTIN" /* Internal node */
#define H5B2_LEAF_MAGIC "BTLF" /* Leaf node */

/* Extensible array signatures */
#define H5EA_HDR_MAGIC    "EAHD" /* Header */
#define H5EA_IBLOCK_MAGIC "EAIB" /* Index block */
#define H5EA_SBLOCK_MAGIC "EASB" /* Super block */
#define H5EA_DBLOCK_MAGIC "EADB" /* Data block */

/* Fixed array signatures */
#define H5FA_HDR_MAGIC    "FAHD" /* Header */
#define H5FA_DBLOCK_MAGIC "FADB" /* Data block */

/* Free space signatures */
#define H5FS_HDR_MAGIC   "FSHD" /* Header */
#define H5FS_SINFO_MAGIC "FSSE" /* Serialized sections */

/* Symbol table node signature */
#define H5G_NODE_MAGIC "SNOD"

/* Fractal heap signatures */
#define H5HF_HDR_MAGIC    "FRHP" /* Header */
#define H5HF_IBLOCK_MAGIC "FHIB" /* Indirect block */
#define H5HF_DBLOCK_MAGIC "FHDB" /* Direct block */

/* Global heap signature */
#define H5HG_MAGIC "GCOL"

/* Local heap signature */
#define H5HL_MAGIC "HEAP"

/* Object header signatures */
#define H5O_HDR_MAGIC "OHDR" /* Header */
#define H5O_CHK_MAGIC "OCHK" /* Continuation chunk */

/* Shared Message signatures */
#define H5SM_TABLE_MAGIC "SMTB" /* Shared Message Table */
#define H5SM_LIST_MAGIC  "SMLI" /* Shared Message List */

/****************************/
/* Library Private Typedefs */
/****************************/

/* Forward declarations (for prototypes & type definitions) */
struct H5B_class_t;
struct H5UC_t;
struct H5G_loc_t;
struct H5O_loc_t;
struct H5HG_heap_t;
struct H5VL_class_t;
struct H5P_genplist_t;
struct H5S_t;

/* Forward declarations for anonymous H5F objects */

/* Main file structures */
typedef struct H5F_shared_t H5F_shared_t;

/* Block aggregation structure */
typedef struct H5F_blk_aggr_t H5F_blk_aggr_t;

/* Structure for object flush callback property (H5Pset_object_flush_cb)*/
typedef struct H5F_object_flush_t {
    H5F_flush_cb_t func;  /* The callback function */
    void          *udata; /* User data */
} H5F_object_flush_t;

/* Concise info about a block of bytes in a file */
typedef struct H5F_block_t {
    haddr_t offset; /* Offset of the block in the file */
    hsize_t length; /* Length of the block in the file */
} H5F_block_t;

/* Enum for free space manager state */
typedef enum H5F_fs_state_t {
    H5F_FS_STATE_CLOSED   = 0, /* Free space manager is closed */
    H5F_FS_STATE_OPEN     = 1, /* Free space manager has been opened */
    H5F_FS_STATE_DELETING = 2  /* Free space manager is being deleted */
} H5F_fs_state_t;

/* For paged aggregation */
/* The values 0 to 6 is the same as H5F_mem_t */
typedef enum H5F_mem_page_t {
    H5F_MEM_PAGE_DEFAULT     = 0, /* Not used */
    H5F_MEM_PAGE_SUPER       = 1,
    H5F_MEM_PAGE_BTREE       = 2,
    H5F_MEM_PAGE_DRAW        = 3,
    H5F_MEM_PAGE_GHEAP       = 4,
    H5F_MEM_PAGE_LHEAP       = 5,
    H5F_MEM_PAGE_OHDR        = 6,
    H5F_MEM_PAGE_LARGE_SUPER = 7,
    H5F_MEM_PAGE_LARGE_BTREE = 8,
    H5F_MEM_PAGE_LARGE_DRAW  = 9,
    H5F_MEM_PAGE_LARGE_GHEAP = 10,
    H5F_MEM_PAGE_LARGE_LHEAP = 11,
    H5F_MEM_PAGE_LARGE_OHDR  = 12,
    H5F_MEM_PAGE_NTYPES      = 13 /* Sentinel value - must be last */
} H5F_mem_page_t;

/* Aliases for H5F_mem_page_t enum values */
#define H5F_MEM_PAGE_META    H5F_MEM_PAGE_SUPER       /* Small-sized meta data */
#define H5F_MEM_PAGE_GENERIC H5F_MEM_PAGE_LARGE_SUPER /* Large-sized generic: meta and raw */

/* Type of prefix for opening prefixed files */
typedef enum H5F_prefix_open_t {
    H5F_PREFIX_VDS   = 0, /* Virtual dataset prefix */
    H5F_PREFIX_ELINK = 1, /* External link prefix   */
    H5F_PREFIX_EFILE = 2  /* External file prefix   */
} H5F_prefix_open_t;

/*****************************/
/* Library-private Variables */
/*****************************/

/***************************************/
/* Library-private Function Prototypes */
/***************************************/

/* Private functions */
H5_DLL herr_t H5F_init(void);
H5_DLL H5F_t *H5F_open(const char *name, unsigned flags, hid_t fcpl_id, hid_t fapl_id);
H5_DLL herr_t H5F_try_close(H5F_t *f, bool *was_closed /*out*/);
H5_DLL hid_t  H5F_get_file_id(H5VL_object_t *vol_obj, H5I_type_t obj_type, bool app_ref);

/* Functions that retrieve values from the file struct */
H5_DLL H5F_libver_t  H5F_get_low_bound(const H5F_t *f);
H5_DLL H5F_libver_t  H5F_get_high_bound(const H5F_t *f);
H5_DLL unsigned      H5F_shared_get_intent(const H5F_shared_t *f);
H5_DLL unsigned      H5F_get_intent(const H5F_t *f);
H5_DLL char         *H5F_get_open_name(const H5F_t *f);
H5_DLL char         *H5F_get_actual_name(const H5F_t *f);
H5_DLL char         *H5F_get_extpath(const H5F_t *f);
H5_DLL H5F_shared_t *H5F_get_shared(const H5F_t *f);
H5_DLL bool          H5F_same_shared(const H5F_t *f1, const H5F_t *f2);
H5_DLL unsigned      H5F_get_nopen_objs(const H5F_t *f);
H5_DLL unsigned      H5F_incr_nopen_objs(H5F_t *f);
H5_DLL unsigned      H5F_decr_nopen_objs(H5F_t *f);
H5_DLL bool          H5F_file_id_exists(const H5F_t *f);
H5_DLL H5F_t        *H5F_get_parent(const H5F_t *f);
H5_DLL unsigned      H5F_get_nmounts(const H5F_t *f);
H5_DLL unsigned      H5F_get_read_attempts(const H5F_t *f);
H5_DLL hid_t         H5F_get_access_plist(H5F_t *f, bool app_ref);
H5_DLL hid_t         H5F_get_id(H5F_t *file);
H5_DLL herr_t  H5F_get_obj_count(const H5F_t *f, unsigned types, bool app_ref, size_t *obj_id_count_ptr);
H5_DLL herr_t  H5F_get_obj_ids(const H5F_t *f, unsigned types, size_t max_objs, hid_t *oid_list, bool app_ref,
                               size_t *obj_id_count_ptr);
H5_DLL hsize_t H5F_get_pgend_meta_thres(const H5F_t *f);
H5_DLL bool    H5F_get_point_of_no_return(const H5F_t *f);
H5_DLL bool    H5F_get_null_fsm_addr(const H5F_t *f);
H5_DLL bool    H5F_get_min_dset_ohdr(const H5F_t *f);
H5_DLL herr_t  H5F_set_min_dset_ohdr(H5F_t *f, bool minimize);
H5_DLL const H5VL_class_t *H5F_get_vol_cls(const H5F_t *f);
H5_DLL H5VL_object_t      *H5F_get_vol_obj(const H5F_t *f);
H5_DLL bool                H5F_get_use_file_locking(const H5F_t *f);
H5_DLL uint64_t            H5F_get_rfic_flags(const H5F_t *f);

/* Functions than retrieve values set/cached from the superblock/FCPL */
H5_DLL haddr_t            H5F_get_base_addr(const H5F_t *f);
H5_DLL unsigned           H5F_sym_leaf_k(const H5F_t *f);
H5_DLL unsigned           H5F_Kvalue(const H5F_t *f, const struct H5B_class_t *type);
H5_DLL unsigned           H5F_get_nrefs(const H5F_t *f);
H5_DLL uint8_t            H5F_sizeof_addr(const H5F_t *f);
H5_DLL uint8_t            H5F_sizeof_size(const H5F_t *f);
H5_DLL haddr_t            H5F_get_sohm_addr(const H5F_t *f);
H5_DLL herr_t             H5F_set_sohm_addr(H5F_t *f, haddr_t addr);
H5_DLL unsigned           H5F_get_sohm_vers(const H5F_t *f);
H5_DLL herr_t             H5F_set_sohm_vers(H5F_t *f, unsigned vers);
H5_DLL unsigned           H5F_get_sohm_nindexes(const H5F_t *f);
H5_DLL herr_t             H5F_set_sohm_nindexes(H5F_t *f, unsigned nindexes);
H5_DLL hid_t              H5F_get_fcpl(const H5F_t *f);
H5_DLL H5F_close_degree_t H5F_get_fc_degree(const H5F_t *f);
H5_DLL bool               H5F_get_evict_on_close(const H5F_t *f);
H5_DLL size_t             H5F_rdcc_nbytes(const H5F_t *f);
H5_DLL size_t             H5F_rdcc_nslots(const H5F_t *f);
H5_DLL double             H5F_rdcc_w0(const H5F_t *f);
H5_DLL size_t             H5F_sieve_buf_size(const H5F_t *f);
H5_DLL unsigned           H5F_gc_ref(const H5F_t *f);
H5_DLL bool               H5F_store_msg_crt_idx(const H5F_t *f);
H5_DLL herr_t             H5F_set_store_msg_crt_idx(H5F_t *f, bool flag);
H5_DLL struct H5UC_t     *H5F_grp_btree_shared(const H5F_t *f);
H5_DLL herr_t             H5F_set_grp_btree_shared(H5F_t *f, struct H5UC_t *rc);
H5_DLL bool               H5F_use_tmp_space(const H5F_t *f);
H5_DLL bool               H5F_is_tmp_addr(const H5F_t *f, haddr_t addr);
H5_DLL hsize_t            H5F_get_alignment(const H5F_t *f);
H5_DLL hsize_t            H5F_get_threshold(const H5F_t *f);
#ifdef H5_HAVE_PARALLEL
H5_DLL H5P_coll_md_read_flag_t H5F_coll_md_read(const H5F_t *f);
H5_DLL H5P_coll_md_read_flag_t H5F_shared_coll_md_read(const H5F_shared_t *f_sh);
#endif /* H5_HAVE_PARALLEL */
H5_DLL bool  H5F_use_mdc_logging(const H5F_t *f);
H5_DLL bool  H5F_start_mdc_log_on_access(const H5F_t *f);
H5_DLL char *H5F_mdc_log_location(const H5F_t *f);

/* Functions that retrieve values from VFD layer */
H5_DLL hid_t   H5F_get_driver_id(const H5F_t *f);
H5_DLL herr_t  H5F_get_fileno(const H5F_t *f, unsigned long *filenum);
H5_DLL bool    H5F_shared_has_feature(const H5F_shared_t *f, unsigned feature);
H5_DLL bool    H5F_has_feature(const H5F_t *f, unsigned feature);
H5_DLL haddr_t H5F_shared_get_eoa(const H5F_shared_t *f_sh, H5FD_mem_t type);
H5_DLL haddr_t H5F_get_eoa(const H5F_t *f, H5FD_mem_t type);
H5_DLL herr_t  H5F_shared_get_file_driver(const H5F_shared_t *f_sh, H5FD_t **file_handle);
H5_DLL herr_t  H5F_get_vfd_handle(const H5F_t *file, hid_t fapl, void **file_handle);
H5_DLL bool    H5F_has_vector_select_io(const H5F_t *f, bool is_write);

/* File mounting routines */
H5_DLL herr_t H5F_mount(const struct H5G_loc_t *loc, const char *name, H5F_t *child, hid_t plist_id);
H5_DLL herr_t H5F_unmount(const struct H5G_loc_t *loc, const char *name);
H5_DLL bool   H5F_is_mount(const H5F_t *file);
H5_DLL bool   H5F_has_mount(const H5F_t *file);
H5_DLL herr_t H5F_traverse_mount(struct H5O_loc_t *oloc /*in,out*/);
H5_DLL herr_t H5F_flush_mounts(H5F_t *f);

/* Functions that operate on blocks of bytes wrt super block */
H5_DLL herr_t H5F_shared_block_read(H5F_shared_t *f_sh, H5FD_mem_t type, haddr_t addr, size_t size,
                                    void *buf /*out*/);
H5_DLL herr_t H5F_block_read(H5F_t *f, H5FD_mem_t type, haddr_t addr, size_t size, void *buf /*out*/);
H5_DLL herr_t H5F_shared_block_write(H5F_shared_t *f_sh, H5FD_mem_t type, haddr_t addr, size_t size,
                                     const void *buf);
H5_DLL herr_t H5F_block_write(H5F_t *f, H5FD_mem_t type, haddr_t addr, size_t size, const void *buf);

/* Functions that operate on selections of elements in the file */
H5_DLL herr_t H5F_shared_select_read(H5F_shared_t *f_sh, H5FD_mem_t type, uint32_t count,
                                     struct H5S_t **mem_spaces, struct H5S_t **file_spaces, haddr_t offsets[],
                                     size_t element_sizes[], void *bufs[] /* out */);
H5_DLL herr_t H5F_shared_select_write(H5F_shared_t *f_sh, H5FD_mem_t type, uint32_t count,
                                      struct H5S_t **mem_spaces, struct H5S_t **file_spaces,
                                      haddr_t offsets[], size_t element_sizes[], const void *bufs[]);

/* Functions that operate on I/O vectors */
H5_DLL herr_t H5F_shared_vector_read(H5F_shared_t *f_sh, uint32_t count, H5FD_mem_t types[], haddr_t addrs[],
                                     size_t sizes[], void *bufs[]);
H5_DLL herr_t H5F_shared_vector_write(H5F_shared_t *f_sh, uint32_t count, H5FD_mem_t types[], haddr_t addrs[],
                                      size_t sizes[], const void *bufs[]);

/* Functions that flush or evict */
H5_DLL herr_t H5F_flush_tagged_metadata(H5F_t *f, haddr_t tag);

/* Functions that verify a piece of metadata with checksum */
H5_DLL herr_t H5F_get_checksums(const uint8_t *buf, size_t chk_size, uint32_t *s_chksum, uint32_t *c_chksum);

/* Routine to track the # of retries */
H5_DLL herr_t H5F_track_metadata_read_retries(H5F_t *f, unsigned actype, unsigned retries);
H5_DLL herr_t H5F_set_retries(H5F_t *f);
H5_DLL herr_t H5F_get_metadata_read_retry_info(H5F_t *file, H5F_retry_info_t *info);

/* Routine to invoke callback function upon object flush */
H5_DLL herr_t H5F_object_flush_cb(H5F_t *f, hid_t obj_id);

/* Address-related functions */
H5_DLL void H5F_addr_encode(const H5F_t *f, uint8_t **pp, haddr_t addr);
H5_DLL void H5F_addr_encode_len(size_t addr_len, uint8_t **pp, haddr_t addr);
H5_DLL void H5F_addr_decode(const H5F_t *f, const uint8_t **pp, haddr_t *addr_p);
H5_DLL void H5F_addr_decode_len(size_t addr_len, const uint8_t **pp, haddr_t *addr_p);

/* Shared file list related routines */
H5_DLL void H5F_sfile_assert_num(unsigned n);

/* Routines for creating & destroying "fake" file structures */
H5_DLL H5F_t *H5F_fake_alloc(uint8_t sizeof_size);
H5_DLL herr_t H5F_fake_free(H5F_t *f);

/* Superblock related routines */
H5_DLL herr_t H5F_super_dirty(H5F_t *f);
H5_DLL herr_t H5F_eoa_dirty(H5F_t *f);

/* Parallel I/O (i.e. MPI) related routines */
#ifdef H5_HAVE_PARALLEL
H5_DLL int      H5F_mpi_get_rank(const H5F_t *f);
H5_DLL MPI_Comm H5F_mpi_get_comm(const H5F_t *f);
H5_DLL MPI_Info H5F_mpi_get_info(const H5F_t *f);
H5_DLL int      H5F_shared_mpi_get_size(const H5F_shared_t *f_sh);
H5_DLL int      H5F_mpi_get_size(const H5F_t *f);
H5_DLL herr_t   H5F_mpi_retrieve_comm(hid_t loc_id, hid_t acspl_id, MPI_Comm *mpi_comm);
H5_DLL herr_t   H5F_mpi_get_file_block_type(bool commit, MPI_Datatype *new_type, bool *new_type_derived);
H5_DLL bool     H5F_get_coll_metadata_reads(const H5F_t *f);
H5_DLL bool     H5F_shared_get_coll_metadata_reads(const H5F_shared_t *f_sh);
H5_DLL void     H5F_set_coll_metadata_reads(H5F_t *f, H5P_coll_md_read_flag_t *file_flag, bool *context_flag);
H5_DLL herr_t   H5F_shared_get_mpi_file_sync_required(const H5F_shared_t *f_sh, bool *flag);
#endif /* H5_HAVE_PARALLEL */

/* External file cache routines */
H5_DLL herr_t H5F_efc_close(H5F_t *parent, H5F_t *file);

/* File prefix routines */
H5_DLL 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);

/* Global heap CWFS routines */
H5_DLL herr_t H5F_cwfs_add(H5F_t *f, struct H5HG_heap_t *heap);
H5_DLL herr_t H5F_cwfs_find_free_heap(H5F_t *f, size_t need, haddr_t *addr);
H5_DLL herr_t H5F_cwfs_advance_heap(H5F_t *f, struct H5HG_heap_t *heap, bool add_heap);
H5_DLL herr_t H5F_cwfs_remove_heap(H5F_shared_t *shared, struct H5HG_heap_t *heap);

/* Debugging functions */
H5_DLL herr_t H5F_debug(H5F_t *f, FILE *stream, int indent, int fwidth);

#endif /* H5Fprivate_H */
