/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /****************/ /* Module Setup */ /****************/ #include "H5Fmodule.h" /* This source code file is part of the H5F module */ /***********/ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ #include "H5ACprivate.h" /* Metadata cache */ #include "H5Eprivate.h" /* Error handling */ #include "H5Fpkg.h" /* File access */ #include "H5FDprivate.h" /* File drivers */ #include "H5FLprivate.h" /* Free Lists */ #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 */ /****************/ /* Local Macros */ /****************/ /******************/ /* Local Typedefs */ /******************/ /********************/ /* Package Typedefs */ /********************/ /********************/ /* Local Prototypes */ /********************/ static herr_t H5F__super_ext_create(H5F_t *f, H5O_loc_t *ext_ptr); static herr_t H5F__update_super_ext_driver_msg(H5F_t *f); /*********************/ /* Package Variables */ /*********************/ /*****************************/ /* Library Private Variables */ /*****************************/ /* Declare a free list to manage the H5F_super_t struct */ H5FL_DEFINE(H5F_super_t); /*******************/ /* Local Variables */ /*******************/ /* Format version bounds for superblock */ static const unsigned HDF5_superblock_ver_bounds[] = { HDF5_SUPERBLOCK_VERSION_DEF, /* H5F_LIBVER_EARLIEST */ HDF5_SUPERBLOCK_VERSION_2, /* H5F_LIBVER_V18 */ HDF5_SUPERBLOCK_VERSION_3, /* H5F_LIBVER_V110 */ HDF5_SUPERBLOCK_VERSION_3, /* H5F_LIBVER_V112 */ HDF5_SUPERBLOCK_VERSION_3, /* H5F_LIBVER_V114 */ HDF5_SUPERBLOCK_VERSION_LATEST /* H5F_LIBVER_LATEST */ }; /*------------------------------------------------------------------------- * Function: H5F__super_ext_create * * Purpose: Create the superblock extension * * Return: Success: non-negative on success * Failure: Negative * *------------------------------------------------------------------------- */ static herr_t H5F__super_ext_create(H5F_t *f, H5O_loc_t *ext_ptr) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ assert(f); assert(f->shared); assert(f->shared->sblock); assert(!H5_addr_defined(f->shared->sblock->ext_addr)); assert(ext_ptr); /* Check for older version of superblock format that can't support superblock extensions */ if (f->shared->sblock->super_vers < HDF5_SUPERBLOCK_VERSION_2) HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "superblock extension not permitted with version %u of superblock", f->shared->sblock->super_vers); else if (H5_addr_defined(f->shared->sblock->ext_addr)) HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "superblock extension already exists?!?!"); else { /* The superblock extension isn't actually a group, but the * default group creation list should work fine. * If we don't supply a size for the object header, HDF5 will * allocate H5O_MIN_SIZE by default. This is currently * big enough to hold the biggest possible extension, but should * be tuned if more information is added to the superblock * extension. */ H5O_loc_reset(ext_ptr); if (H5O_create(f, (size_t)0, (size_t)1, H5P_GROUP_CREATE_DEFAULT, ext_ptr) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTCREATE, FAIL, "unable to create superblock extension"); /* Record the address of the superblock extension */ f->shared->sblock->ext_addr = ext_ptr->addr; } /* end else */ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F__super_ext_create() */ /*------------------------------------------------------------------------- * Function: H5F__super_ext_open * * Purpose: Open an existing superblock extension * * Return: Success: non-negative on success * Failure: Negative * *------------------------------------------------------------------------- */ herr_t H5F__super_ext_open(H5F_t *f, haddr_t ext_addr, H5O_loc_t *ext_ptr) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ assert(f); assert(H5_addr_defined(ext_addr)); assert(ext_ptr); /* Set up "fake" object location for superblock extension */ H5O_loc_reset(ext_ptr); ext_ptr->file = f; ext_ptr->addr = ext_addr; /* Open the superblock extension object header */ if (H5O_open(ext_ptr) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, FAIL, "unable to open superblock extension"); done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F__super_ext_open() */ /*------------------------------------------------------------------------- * Function: H5F__super_ext_close * * Purpose: Close superblock extension * * Return: Success: non-negative on success * Failure: Negative * *------------------------------------------------------------------------- */ herr_t H5F__super_ext_close(H5F_t *f, H5O_loc_t *ext_ptr, bool was_created) { H5AC_ring_t orig_ring = H5AC_RING_INV; /* Original ring value */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ assert(f); assert(ext_ptr); /* Check if extension was created */ if (was_created) { /* Set the ring type in the API context */ H5AC_set_ring(H5AC_RING_SBE, &orig_ring); /* Increment link count on superblock extension's object header */ if (H5O_link(ext_ptr, 1) < 0) HGOTO_ERROR(H5E_FILE, H5E_LINKCOUNT, FAIL, "unable to increment hard link count"); /* Decrement refcount on superblock extension's object header in memory */ if (H5O_dec_rc_by_loc(ext_ptr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTDEC, FAIL, "unable to decrement refcount on superblock extension"); } /* end if */ /* Twiddle the number of open objects to avoid closing the file. */ f->nopen_objs++; if (H5O_close(ext_ptr, NULL) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEOBJ, FAIL, "unable to close superblock extension"); f->nopen_objs--; done: /* Reset the ring in the API context */ if (orig_ring != H5AC_RING_INV) H5AC_set_ring(orig_ring, NULL); FUNC_LEAVE_NOAPI(ret_value) } /* H5F__super_ext_close() */ /*------------------------------------------------------------------------- * Function: H5F__update_super_ext_driver_msg * * Purpose: Update the superblock extension file driver info message if * we are using a V 2 superblock. Observe that the function * is a NO-OP if the file driver info message does not exist. * This is necessary, as the function is called whenever the * EOA is updated, and were it to create the file driver info * message, it would find itself in an infinite recursion. * * Return: Success: SUCCEED * Failure: FAIL * *------------------------------------------------------------------------- */ static herr_t H5F__update_super_ext_driver_msg(H5F_t *f) { H5F_super_t *sblock; /* Pointer to the super block */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ assert(f); assert(f->shared); sblock = f->shared->sblock; assert(sblock); assert(sblock->cache_info.type == H5AC_SUPERBLOCK); /* Update the driver information message in the superblock extension * if appropriate. */ if (sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_2) { if (H5_addr_defined(sblock->ext_addr)) { /* Check for ignoring the driver info for this file */ if (!H5F_HAS_FEATURE(f, H5FD_FEAT_IGNORE_DRVRINFO)) { size_t driver_size; /* Size of driver info block (bytes)*/ /* Check for driver info */ H5_CHECKED_ASSIGN(driver_size, size_t, H5FD_sb_size(f->shared->lf), hsize_t); /* Nothing to do unless there is both driver info and * the driver info superblock extension message has * already been created. */ if (driver_size > 0) { H5O_drvinfo_t drvinfo; /* Driver info */ uint8_t dbuf[H5F_MAX_DRVINFOBLOCK_SIZE]; /* Driver info block encoding buffer */ /* Sanity check */ assert(driver_size <= H5F_MAX_DRVINFOBLOCK_SIZE); /* Encode driver-specific data */ if (H5FD_sb_encode(f->shared->lf, drvinfo.name, dbuf) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to encode driver information"); /* Write the message to the superblock extension. * * Note that the superblock extension and the * file driver info message must already exist. */ drvinfo.len = driver_size; drvinfo.buf = dbuf; if (H5F__super_ext_write_msg(f, H5O_DRVINFO_ID, &drvinfo, false, H5O_MSG_NO_FLAGS_SET) < 0) HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "unable to update driver info header message"); } /* end if driver_size > 0 */ } /* end if !H5F_HAS_FEATURE(f, H5FD_FEAT_IGNORE_DRVRINFO) */ } /* end if superblock extension exists */ } /* end if sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_2 */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5F__update_super_ext_driver_msg() */ /*------------------------------------------------------------------------- * Function: H5F__super_read * * Purpose: Reads the superblock from the file or from the BUF. If * ADDR is a valid address, then it reads it from the file. * If not, then BUF must be non-NULL for it to read from the * BUF. * * Return: Success: SUCCEED * Failure: FAIL * *------------------------------------------------------------------------- */ herr_t H5F__super_read(H5F_t *f, H5P_genplist_t *fa_plist, bool initial_read) { H5AC_ring_t orig_ring = H5AC_RING_INV; H5F_super_t *sblock = NULL; /* Superblock structure */ H5F_superblock_cache_ud_t udata; /* User data for cache callbacks */ H5P_genplist_t *c_plist; /* File creation property list */ H5FD_t *file; /* File driver pointer */ unsigned sblock_flags = H5AC__NO_FLAGS_SET; /* flags used in superblock unprotect call */ haddr_t super_addr; /* Absolute address of superblock */ haddr_t eof; /* End of file address */ unsigned rw_flags; /* Read/write permissions for file */ bool skip_eof_check = false; /* Whether to skip checking the EOF value */ #ifdef H5_HAVE_PARALLEL int mpi_size = 1; #endif /* H5_HAVE_PARALLEL */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE_TAG(H5AC__SUPERBLOCK_TAG) /* initialize the drvinfo to NULL -- we will overwrite this if there * is a driver information block */ f->shared->drvinfo = NULL; /* Set up file driver I/O info */ file = f->shared->lf; /* Find the superblock */ #ifdef H5_HAVE_PARALLEL if (H5F_HAS_FEATURE(f, H5FD_FEAT_HAS_MPI)) if ((mpi_size = H5F_mpi_get_size(f)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve MPI communicator size"); /* If we are an MPI application with at least two processes, the * following superblock signature location optimization is applicable. * * Note:: For parallel applications which don't setup for using the * HDF5 MPIO driver, we will arrive here with mpi_size == 1. * This occurs because of the variable initialization (above) and the * fact that we have skipped actually calling MPI functions to determine * our MPI rank and size. */ if (mpi_size > 1) { MPI_Comm this_comm; int mpi_rank; int mpi_result; /* Sanity check */ assert(H5F_HAS_FEATURE(f, H5FD_FEAT_HAS_MPI)); /* Set up MPI info */ if ((mpi_rank = H5F_mpi_get_rank(f)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "Can't get MPI rank"); if (MPI_COMM_NULL == (this_comm = H5F_mpi_get_comm(f))) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get MPI communicator"); /* Search for the file's signature only with rank 0 process */ if (0 == mpi_rank) { herr_t status; /* Try detecting file's signature */ /* (Don't leave before Bcast, to avoid hang on error) */ H5E_BEGIN_TRY { status = H5FD_locate_signature(file, &super_addr); } H5E_END_TRY /* Set superblock address to undefined on error */ if (status < 0) super_addr = HADDR_UNDEF; } /* end if */ /* Broadcast superblock address to other processes */ if (MPI_SUCCESS != (mpi_result = MPI_Bcast(&super_addr, sizeof(super_addr), MPI_BYTE, 0, this_comm))) HMPI_GOTO_ERROR(FAIL, "MPI_Bcast failed", mpi_result) } /* end if */ else { /* Locate the signature as per per the serial library */ #endif /* H5_HAVE_PARALLEL */ if (H5FD_locate_signature(file, &super_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_NOTHDF5, FAIL, "unable to locate file signature"); #ifdef H5_HAVE_PARALLEL } /* end else */ #endif /* H5_HAVE_PARALLEL */ if (!H5_addr_defined(super_addr)) HGOTO_ERROR(H5E_FILE, H5E_NOTHDF5, FAIL, "file signature not found"); /* Check for userblock present */ if (H5_addr_gt(super_addr, 0)) { /* Set the base address for the file in the VFD now */ if (H5F__set_base_addr(f, super_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "failed to set base address for file driver"); } /* end if */ /* Determine file intent for superblock protect */ /* Must tell cache at protect time that the super block is to be * flushed last (and collectively in the parallel case). */ rw_flags = H5AC__FLUSH_LAST_FLAG; #ifdef H5_HAVE_PARALLEL rw_flags |= H5C__FLUSH_COLLECTIVELY_FLAG; #endif /* H5_HAVE_PARALLEL */ if (!(H5F_INTENT(f) & H5F_ACC_RDWR)) rw_flags |= H5AC__READ_ONLY_FLAG; /* Get the shared file creation property list */ if (NULL == (c_plist = (H5P_genplist_t *)H5I_object(f->shared->fcpl_id))) HGOTO_ERROR(H5E_FILE, H5E_BADTYPE, FAIL, "can't get property list"); /* Make certain we can read the fixed-size portion of the superblock */ if (H5F__set_eoa(f, H5FD_MEM_SUPER, (haddr_t)(H5F_SUPERBLOCK_FIXED_SIZE + H5F_SUPERBLOCK_MINIMAL_VARLEN_SIZE)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "set end of space allocation request failed"); /* Set up the user data for cache callbacks */ udata.f = f; udata.ignore_drvrinfo = H5F_HAS_FEATURE(f, H5FD_FEAT_IGNORE_DRVRINFO); udata.sym_leaf_k = 0; if (H5P_get(c_plist, H5F_CRT_BTREE_RANK_NAME, udata.btree_k) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get rank for btree internal nodes"); udata.stored_eof = HADDR_UNDEF; udata.drvrinfo_removed = false; /* Set the ring type in the API context */ H5AC_set_ring(H5AC_RING_SB, &orig_ring); /* Look up the superblock */ if (NULL == (sblock = (H5F_super_t *)H5AC_protect(f, H5AC_SUPERBLOCK, (haddr_t)0, &udata, rw_flags))) HGOTO_ERROR(H5E_FILE, H5E_CANTPROTECT, FAIL, "unable to load superblock"); /* * When opening a file with SWMR-write access, the library will first * check to ensure that superblock version 3 is used. Otherwise fail * file open. * * Then the library will upgrade the file's low_bound depending on * superblock version as follows: * --version 0 or 1: no change to low_bound * --version 2: upgrade low_bound to at least V18 * --version 3: upgrade low_bound to at least V110 * * Upgrading low_bound will give the best format versions available for * that superblock version. Due to the possible upgrade, the fapl returned * from H5Fget_access_plist() might indicate a low_bound higher than what * the user originally set. * * After upgrading low_bound, the library will check to ensure that the * superblock version does not exceed the version allowed by high_bound. * Otherwise fail file open. * * For details, please see RFC:Setting Bounds for Object Creation in HDF5 1.10.0. */ /* Check to ensure that superblock version 3 is used for SWMR-write access */ if (H5F_INTENT(f) & H5F_ACC_SWMR_WRITE) { if (sblock->super_vers < HDF5_SUPERBLOCK_VERSION_3) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "superblock version for SWMR is less than 3"); } /* Upgrade low_bound to at least V18 when encountering version 2 superblock */ if (sblock->super_vers == HDF5_SUPERBLOCK_VERSION_2) f->shared->low_bound = MAX(H5F_LIBVER_V18, f->shared->low_bound); /* Upgrade low_bound to at least V110 when encountering version 3 superblock */ if (sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_3) f->shared->low_bound = MAX(H5F_LIBVER_V110, f->shared->low_bound); /* Version bounds check */ if (sblock->super_vers > HDF5_superblock_ver_bounds[f->shared->high_bound]) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "superblock version exceeds high bound"); /* Pin the superblock in the cache */ if (H5AC_pin_protected_entry(sblock) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTPIN, FAIL, "unable to pin superblock"); /* Mark the superblock dirty if it was modified during loading */ if (((rw_flags & H5AC__READ_ONLY_FLAG) == 0) && udata.ignore_drvrinfo && udata.drvrinfo_removed) { assert(sblock->super_vers < HDF5_SUPERBLOCK_VERSION_2); sblock_flags |= H5AC__DIRTIED_FLAG; } /* end if */ /* The superblock must be flushed last (and collectively in parallel) */ sblock_flags |= H5AC__FLUSH_LAST_FLAG; #ifdef H5_HAVE_PARALLEL sblock_flags |= H5AC__FLUSH_COLLECTIVELY_FLAG; #endif /* H5_HAVE_PARALLEL */ /* Check if superblock address is different from base address and adjust * base address and "end of file" address if so. */ if (!H5_addr_eq(super_addr, sblock->base_addr)) { /* If the superblock moved in the file, adjust the EOF */ /* (Handles moving earlier & later) */ udata.stored_eof -= (sblock->base_addr - super_addr); /* Adjust base address for offsets of the HDF5 data in the file */ sblock->base_addr = super_addr; /* Set the base address for the file in the VFD now */ if (H5F__set_base_addr(f, sblock->base_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "failed to set base address for file driver"); /* Indicate that the superblock should be marked dirty */ if ((rw_flags & H5AC__READ_ONLY_FLAG) == 0) sblock_flags |= H5AC__DIRTIED_FLAG; } /* end if */ /* Set information in the file's creation property list */ if (H5P_set(c_plist, H5F_CRT_SUPER_VERS_NAME, &sblock->super_vers) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set superblock version"); if (H5P_set(c_plist, H5F_CRT_ADDR_BYTE_NUM_NAME, &sblock->sizeof_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set byte number in an address"); if (H5P_set(c_plist, H5F_CRT_OBJ_BYTE_NUM_NAME, &sblock->sizeof_size) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set byte number for object size"); /* Handle the B-tree 'K' values */ if (sblock->super_vers < HDF5_SUPERBLOCK_VERSION_2) { /* Sanity check */ assert(udata.sym_leaf_k != 0); /* Set the symbol table internal node 'K' value */ if (H5P_set(c_plist, H5F_CRT_SYM_LEAF_NAME, &udata.sym_leaf_k) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set rank for symbol table leaf nodes"); sblock->sym_leaf_k = udata.sym_leaf_k; /* Set the B-tree internal node values, etc */ if (H5P_set(c_plist, H5F_CRT_BTREE_RANK_NAME, udata.btree_k) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set rank for btree internal nodes"); H5MM_memcpy(sblock->btree_k, udata.btree_k, sizeof(unsigned) * (size_t)H5B_NUM_BTREE_ID); } /* end if */ else { /* Get the (default) B-tree internal node values, etc */ /* (Note: these may be reset in a superblock extension) */ if (H5P_get(c_plist, H5F_CRT_BTREE_RANK_NAME, sblock->btree_k) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get rank for btree internal nodes"); if (H5P_get(c_plist, H5F_CRT_SYM_LEAF_NAME, &sblock->sym_leaf_k) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get rank for btree internal nodes"); } /* end else */ /* * The user-defined data is the area of the file before the base * address. */ if (H5P_set(c_plist, H5F_CRT_USER_BLOCK_NAME, &sblock->base_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set userblock size"); /* * Make sure that the data is not truncated. One case where this is * possible is if the first file of a family of files was opened * individually. * * Can skip this test when it is not the initial file open. * * When flushing file buffers and fractal heap is involved, * the library will allocate actual space for tmp addresses * via the file layer. The aggregator allocates a block, * thus the eoa might be greater than eof. * Note: the aggregator is changed again after being reset * earlier before H5AC_flush due to allocation of tmp addresses. * * The EOF check must be skipped when the file is opened for SWMR read, * as the file can appear truncated if only part of it has been * been flushed to disk by the SWMR writer process. * * The EOF check is also skipped when the private property * H5F_ACS_SKIP_EOF_CHECK_NAME exists in the fapl. * This property is enabled by the tool h5clear with these * two options: (1) --filesize (2) --increment */ /* Check if this private property exists in fapl */ if (H5P_exist_plist(fa_plist, H5F_ACS_SKIP_EOF_CHECK_NAME) > 0) if (H5P_get(fa_plist, H5F_ACS_SKIP_EOF_CHECK_NAME, &skip_eof_check) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get skip EOF check value"); if (H5F_INTENT(f) & H5F_ACC_SWMR_READ) { /* * When the file is opened for SWMR read access, skip the check if: * --the file is already marked for SWMR writing and * --the file has version 3 superblock for SWMR support */ if ((sblock->status_flags & H5F_SUPER_SWMR_WRITE_ACCESS) && (sblock->status_flags & H5F_SUPER_WRITE_ACCESS) && sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_3) skip_eof_check = true; } if (!skip_eof_check && initial_read) { if (HADDR_UNDEF == (eof = H5FD_get_eof(f->shared->lf, H5FD_MEM_DEFAULT))) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to determine file size"); /* (Account for the stored EOA being absolute offset -QAK) */ if ((eof + sblock->base_addr) < udata.stored_eof) HGOTO_ERROR(H5E_FILE, H5E_TRUNCATED, FAIL, "truncated file: eof = %llu, sblock->base_addr = %llu, stored_eof = %llu", (unsigned long long)eof, (unsigned long long)sblock->base_addr, (unsigned long long)udata.stored_eof); } /* * Tell the file driver how much address space has already been * allocated so that it knows how to allocate additional memory. */ /* Set the ring type in the API context */ H5AC_set_ring(H5AC_RING_SBE, NULL); /* Decode the optional driver information block */ if (H5_addr_defined(sblock->driver_addr)) { H5O_drvinfo_t *drvinfo; /* Driver info */ H5F_drvrinfo_cache_ud_t drvrinfo_udata; /* User data for metadata callbacks */ unsigned drvinfo_flags = H5AC__NO_FLAGS_SET; /* Flags used in driver info block unprotect call */ /* Sanity check - driver info block should only be defined for * superblock version < 2. */ assert(sblock->super_vers < HDF5_SUPERBLOCK_VERSION_2); /* Set up user data */ drvrinfo_udata.f = f; drvrinfo_udata.driver_addr = sblock->driver_addr; /* extend EOA so we can read at least the fixed sized * portion of the driver info block */ if (H5FD_set_eoa(f->shared->lf, H5FD_MEM_SUPER, sblock->driver_addr + H5F_DRVINFOBLOCK_HDR_SIZE) < 0) /* will extend eoa later if required */ HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "set end of space allocation request failed"); /* Look up the driver info block */ if (NULL == (drvinfo = (H5O_drvinfo_t *)H5AC_protect(f, H5AC_DRVRINFO, sblock->driver_addr, &drvrinfo_udata, rw_flags))) HGOTO_ERROR(H5E_FILE, H5E_CANTPROTECT, FAIL, "unable to load driver info block"); /* Loading the driver info block is enough to set up the right info */ /* Check if we need to rewrite the driver info block info */ if (((rw_flags & H5AC__READ_ONLY_FLAG) == 0) && H5F_HAS_FEATURE(f, H5FD_FEAT_DIRTY_DRVRINFO_LOAD)) drvinfo_flags |= H5AC__DIRTIED_FLAG; /* set the pin entry flag so that the driver information block * cache entry will be pinned in the cache. */ drvinfo_flags |= H5AC__PIN_ENTRY_FLAG; /* Release the driver info block */ if (H5AC_unprotect(f, H5AC_DRVRINFO, sblock->driver_addr, drvinfo, drvinfo_flags) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTUNPROTECT, FAIL, "unable to release driver info block"); /* save a pointer to the driver information cache entry */ f->shared->drvinfo = drvinfo; } /* end if */ /* (Account for the stored EOA being absolute offset -NAF) */ if (H5F__set_eoa(f, H5FD_MEM_DEFAULT, udata.stored_eof - sblock->base_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set end-of-address marker for file"); /* Decode the optional superblock extension info */ if (H5_addr_defined(sblock->ext_addr)) { H5O_loc_t ext_loc; /* "Object location" for superblock extension */ H5O_btreek_t btreek; /* v1 B-tree 'K' value message from superblock extension */ H5O_drvinfo_t drvinfo; /* Driver info message from superblock extension */ size_t u; /* Local index variable */ htri_t status; /* Status for message existing */ /* Sanity check - superblock extension should only be defined for * superblock version >= 2. */ if (sblock->super_vers < HDF5_SUPERBLOCK_VERSION_2) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "invalid superblock - extension message should not be defined for version < 2"); /* Check for superblock extension being located "outside" the stored * 'eoa' value, which can occur with the split/multi VFD. */ if (H5_addr_gt(sblock->ext_addr, udata.stored_eof)) { /* Set the 'eoa' for the object header memory type large enough * to give some room for a reasonably sized superblock extension. * (This is _rather_ a kludge -QAK) */ if (H5F__set_eoa(f, H5FD_MEM_OHDR, (haddr_t)(sblock->ext_addr + 1024)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set end-of-address marker for file"); } /* end if */ /* Open the superblock extension */ if (H5F__super_ext_open(f, sblock->ext_addr, &ext_loc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENOBJ, FAIL, "unable to open file's superblock extension"); /* Check for the extension having a 'driver info' message */ if ((status = H5O_msg_exists(&ext_loc, H5O_DRVINFO_ID)) < 0) HGOTO_ERROR(H5E_FILE, H5E_EXISTS, FAIL, "unable to read object header"); if (status) { /* Check for ignoring the driver info for this file */ if (!udata.ignore_drvrinfo) { /* Retrieve the 'driver info' structure */ if (NULL == H5O_msg_read(&ext_loc, H5O_DRVINFO_ID, &drvinfo)) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "driver info message not present"); /* Validate and decode driver information */ if (H5FD_sb_load(f->shared->lf, drvinfo.name, drvinfo.buf) < 0) { H5O_msg_reset(H5O_DRVINFO_ID, &drvinfo); HGOTO_ERROR(H5E_FILE, H5E_CANTDECODE, FAIL, "unable to decode driver information"); } /* end if */ /* Reset driver info message */ H5O_msg_reset(H5O_DRVINFO_ID, &drvinfo); assert(false == f->shared->drvinfo_sb_msg_exists); f->shared->drvinfo_sb_msg_exists = true; } /* end else */ } /* end if */ /* Read in the shared OH message information if there is any */ if (H5SM_get_info(&ext_loc, c_plist) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to read SOHM table information"); /* Check for the extension having a 'v1 B-tree "K"' message */ if ((status = H5O_msg_exists(&ext_loc, H5O_BTREEK_ID)) < 0) HGOTO_ERROR(H5E_FILE, H5E_EXISTS, FAIL, "unable to read object header"); if (status) { /* Retrieve the 'v1 B-tree "K"' structure */ if (NULL == H5O_msg_read(&ext_loc, H5O_BTREEK_ID, &btreek)) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "v1 B-tree 'K' info message not present"); /* Set non-default v1 B-tree 'K' value info from file */ sblock->btree_k[H5B_CHUNK_ID] = btreek.btree_k[H5B_CHUNK_ID]; sblock->btree_k[H5B_SNODE_ID] = btreek.btree_k[H5B_SNODE_ID]; sblock->sym_leaf_k = btreek.sym_leaf_k; /* Set non-default v1 B-tree 'K' values in the property list */ if (H5P_set(c_plist, H5F_CRT_BTREE_RANK_NAME, btreek.btree_k) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set rank for btree internal nodes"); if (H5P_set(c_plist, H5F_CRT_SYM_LEAF_NAME, &btreek.sym_leaf_k) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set rank for symbol table leaf nodes"); } /* end if */ /* Check for the extension having a 'free-space manager info' message */ if ((status = H5O_msg_exists(&ext_loc, H5O_FSINFO_ID)) < 0) HGOTO_ERROR(H5E_FILE, H5E_EXISTS, FAIL, "unable to read object header"); if (status) { uint8_t flags; /* Message flags */ /* Get message flags */ if (H5O_msg_get_flags(&ext_loc, H5O_FSINFO_ID, &flags) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to message flags for free-space manager info message"); /* If message is NOT marked "unknown"--set up file space info */ if (!(flags & H5O_MSG_FLAG_WAS_UNKNOWN)) { H5O_fsinfo_t fsinfo; /* File space info message from superblock extension */ /* f->shared->null_fsm_addr: Whether to drop free-space to the floor */ /* The h5clear tool uses this property to tell the library * to drop free-space to the floor */ if (H5P_exist_plist(fa_plist, H5F_ACS_NULL_FSM_ADDR_NAME) > 0) if (H5P_get(fa_plist, H5F_ACS_NULL_FSM_ADDR_NAME, &f->shared->null_fsm_addr) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get clearance for persisting fsm addr"); /* Retrieve the 'file space info' structure */ if (NULL == H5O_msg_read(&ext_loc, H5O_FSINFO_ID, &fsinfo)) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get free-space manager info message"); /* Version bounds check */ if (H5O_fsinfo_check_version(H5F_HIGH_BOUND(f), &fsinfo) < 0) HGOTO_ERROR(H5E_FILE, H5E_BADRANGE, FAIL, "File space info message's version out of bounds"); /* Update changed values */ if (f->shared->fs_version != fsinfo.version) f->shared->fs_version = fsinfo.version; if (f->shared->fs_strategy != fsinfo.strategy) { f->shared->fs_strategy = fsinfo.strategy; /* Set non-default strategy in the property list */ if (H5P_set(c_plist, H5F_CRT_FILE_SPACE_STRATEGY_NAME, &fsinfo.strategy) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set file space strategy"); } /* end if */ if (f->shared->fs_persist != fsinfo.persist) { f->shared->fs_persist = fsinfo.persist; /* Set non-default strategy in the property list */ if (H5P_set(c_plist, H5F_CRT_FREE_SPACE_PERSIST_NAME, &fsinfo.persist) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set file space strategy"); } /* end if */ if (f->shared->fs_threshold != fsinfo.threshold) { f->shared->fs_threshold = fsinfo.threshold; /* Set non-default threshold in the property list */ if (H5P_set(c_plist, H5F_CRT_FREE_SPACE_THRESHOLD_NAME, &fsinfo.threshold) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set file space strategy"); } /* end if */ assert(f->shared->fs_page_size >= H5F_FILE_SPACE_PAGE_SIZE_MIN); assert(fsinfo.page_size >= H5F_FILE_SPACE_PAGE_SIZE_MIN); if (f->shared->fs_page_size != fsinfo.page_size) { f->shared->fs_page_size = fsinfo.page_size; /* Set file space page size in the property list */ if (H5P_set(c_plist, H5F_CRT_FILE_SPACE_PAGE_SIZE_NAME, &fsinfo.page_size) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set file space page size"); } /* end if */ if (f->shared->pgend_meta_thres != fsinfo.pgend_meta_thres) /* Initialize page end meta threshold */ f->shared->pgend_meta_thres = fsinfo.pgend_meta_thres; if (f->shared->eoa_fsm_fsalloc != fsinfo.eoa_pre_fsm_fsalloc) f->shared->eoa_fsm_fsalloc = fsinfo.eoa_pre_fsm_fsalloc; /* * If the following two conditions are true: * (1) skipping EOF check (skip_eof_check) * (2) dropping free-space to the floor (f->shared->null_fsm_addr) * skip the asserts as "eoa_fsm_fsalloc" may be undefined * for a crashed file with persistent free space managers. * The above two conditions are enabled when the tool h5clear --increment * option is used. */ if (!skip_eof_check && !f->shared->null_fsm_addr) assert((!f->shared->fs_persist) || (f->shared->eoa_fsm_fsalloc != HADDR_UNDEF)); /* * A crashed file with persistent free-space managers may have * undefined f->shared->eoa_fsm_fsalloc. * eoa_fsm_fsalloc is the final eoa which is saved in the free-space * info message's eoa_pre_fsm_fsalloc field for backward compatibility. * If the tool h5clear sets to dropping free-space to the floor * as indicated by f->shared->null_fsm_addr, we are not going to * perform actions to settle things on file close in the routines * H5MF_settle_meta_data_fsm() and H5MF_settle_raw_data_fsm(). * * We remove the following check: * if((f->shared->eoa_pre_fsm_fsalloc != HADDR_UNDEF || null_fsm_addr) && * (H5F_INTENT(f) & H5F_ACC_RDWR)) * f->shared->first_alloc_dealloc = true; * * Because: * --there is no more f->shared->eoa_pre_fsm_fsalloc and * f->shared->first_alloc_dealloc * --the check for null_fsm_addr is directly done in H5MF_settle_meta_data_fsm() * and H5MF_settle_raw_data_fsm() */ f->shared->fs_addr[0] = HADDR_UNDEF; for (u = 1; u < NELMTS(f->shared->fs_addr); u++) f->shared->fs_addr[u] = fsinfo.fs_addr[u - 1]; /* If the following two conditions are true: * (1) file is persisting free-space * (2) dropping free-space to the floor (f->shared->null_fsm_addr) * nullify the addresses of the FSMs */ if (f->shared->fs_persist && f->shared->null_fsm_addr) for (u = 0; u < NELMTS(fsinfo.fs_addr); u++) f->shared->fs_addr[u] = fsinfo.fs_addr[u] = HADDR_UNDEF; /* For fsinfo.mapped: remove the FSINFO message from the superblock extension and write a new message to the extension */ /* For f->shared->null_fsm_addr: just update FSINFO message in the superblock extension */ if (((fsinfo.mapped || f->shared->null_fsm_addr) && (rw_flags & H5AC__READ_ONLY_FLAG) == 0)) { /* Do the same kluge until we know for sure. VC */ #if 1 /* bug fix test code -- tidy this up if all goes well */ /* JRM */ /* KLUGE ALERT!! * * H5F__super_ext_write_msg() expects f->shared->sblock to * be set -- verify that it is NULL, and then set it. * Set it back to NULL when we are done. */ assert(f->shared->sblock == NULL); f->shared->sblock = sblock; #endif /* JRM */ if (f->shared->null_fsm_addr) { if (H5F__super_ext_write_msg(f, H5O_FSINFO_ID, &fsinfo, false, H5O_MSG_FLAG_MARK_IF_UNKNOWN) < 0) HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "error in writing fsinfo message to superblock extension"); } else { if (H5F__super_ext_remove_msg(f, H5O_FSINFO_ID) < 0) { #if 1 /* bug fix test code -- tidy this up if all goes well */ /* JRM */ f->shared->sblock = NULL; #endif /* JRM */ HGOTO_ERROR(H5E_FILE, H5E_CANTDELETE, FAIL, "error in removing message from superblock extension"); } if (H5F__super_ext_write_msg(f, H5O_FSINFO_ID, &fsinfo, true, H5O_MSG_FLAG_MARK_IF_UNKNOWN) < 0) HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "error in writing fsinfo message to superblock extension"); } #if 1 /* bug fix test code -- tidy this up if all goes well */ /* JRM */ f->shared->sblock = NULL; #endif /* JRM */ } /* end if */ } /* end if not marked "unknown" */ } /* end if */ /* Check for the extension having a 'metadata cache image' message */ if ((status = H5O_msg_exists(&ext_loc, H5O_MDCI_MSG_ID)) < 0) HGOTO_ERROR(H5E_FILE, H5E_EXISTS, FAIL, "unable to read object header"); if (status) { bool rw = ((rw_flags & H5AC__READ_ONLY_FLAG) == 0); H5O_mdci_t mdci_msg; /* if the metadata cache image superblock extension message exists, * read its contents and pass the data on to the metadata cache. * Given this data, the cache will load and decode the metadata * cache image block, decoded it and load its contents into the * the cache on the test protect call. * * Further, if the file is opened R/W, the metadata cache will * delete the metadata cache image superblock extension and free * the cache image block. Don't do this now as f->shared * is not fully setup, which complicates matters. */ /* Retrieve the 'metadata cache image message' structure */ if (NULL == H5O_msg_read(&ext_loc, H5O_MDCI_MSG_ID, &mdci_msg)) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get metadata cache image message"); /* Indicate to the cache that there's an image to load on first protect call */ if (H5AC_load_cache_image_on_next_protect(f, mdci_msg.addr, mdci_msg.size, rw) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTLOAD, FAIL, "call to H5AC_load_cache_image_on_next_protect failed"); } /* end if */ /* Close superblock extension */ if (H5F__super_ext_close(f, &ext_loc, false) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEOBJ, FAIL, "unable to close file's superblock extension"); } /* end if */ /* Update the driver info if VFD indicated to do so */ /* (NOTE: only for later versions of superblock, earlier versions are handled * earlier in this routine. */ if (((rw_flags & H5AC__READ_ONLY_FLAG) == 0) && sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_2 && H5_addr_defined(sblock->ext_addr)) { /* Check for modifying the driver info when opening the file */ if (H5F_HAS_FEATURE(f, H5FD_FEAT_DIRTY_DRVRINFO_LOAD)) { size_t driver_size; /* Size of driver info block (bytes) */ /* Check for driver info message */ H5_CHECKED_ASSIGN(driver_size, size_t, H5FD_sb_size(f->shared->lf), hsize_t); if (driver_size > 0) { H5O_drvinfo_t drvinfo; /* Driver info */ uint8_t dbuf[H5F_MAX_DRVINFOBLOCK_SIZE]; /* Driver info block encoding buffer */ /* Sanity check */ assert(driver_size <= H5F_MAX_DRVINFOBLOCK_SIZE); /* Encode driver-specific data */ if (H5FD_sb_encode(f->shared->lf, drvinfo.name, dbuf) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to encode driver information"); /* Set the driver info information for the superblock extension */ drvinfo.len = driver_size; drvinfo.buf = dbuf; /* Write driver info information to the superblock extension */ #if 1 /* bug fix test code -- tidy this up if all goes well */ /* JRM */ /* KLUGE ALERT!! * * H5F__super_ext_write_msg() expects f->shared->sblock to * be set -- verify that it is NULL, and then set it. * Set it back to NULL when we are done. */ assert(f->shared->sblock == NULL); f->shared->sblock = sblock; #endif /* JRM */ if (H5F__super_ext_write_msg(f, H5O_DRVINFO_ID, &drvinfo, false, H5O_MSG_NO_FLAGS_SET) < 0) HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "error in writing message to superblock extension"); #if 1 /* bug fix test code -- tidy this up if all goes well */ /* JRM */ f->shared->sblock = NULL; #endif /* JRM */ } /* end if */ } /* end if */ /* Check for eliminating the driver info block */ else if (H5F_HAS_FEATURE(f, H5FD_FEAT_IGNORE_DRVRINFO)) { /* Remove the driver info message from the superblock extension */ if (H5F__super_ext_remove_msg(f, H5O_DRVINFO_ID) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "error in removing message from superblock extension"); /* Check if the superblock extension was removed */ if (!H5_addr_defined(sblock->ext_addr)) sblock_flags |= H5AC__DIRTIED_FLAG; } /* end if */ } /* end if */ /* Set the pointer to the pinned superblock */ f->shared->sblock = sblock; /* Set the page aggregation mode */ if (H5F__set_paged_aggr(f, (bool)H5F_PAGED_AGGR(f)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "failed to set paged_aggr status for file driver"); done: /* Reset the ring in the API context */ if (orig_ring != H5AC_RING_INV) H5AC_set_ring(orig_ring, NULL); /* Release the superblock */ if (sblock && H5AC_unprotect(f, H5AC_SUPERBLOCK, (haddr_t)0, sblock, sblock_flags) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTUNPROTECT, FAIL, "unable to close superblock"); /* If we have failed, make sure no entries are left in the * metadata cache, so that it can be shut down and discarded. */ if (ret_value < 0) { /* Unpin and discard drvinfo cache entry */ if (f->shared->drvinfo) { if (H5AC_unpin_entry(f->shared->drvinfo) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTUNPIN, FAIL, "unable to unpin driver info"); /* Evict the driver info block from the cache */ if (sblock) { if (H5AC_expunge_entry(f, H5AC_DRVRINFO, sblock->driver_addr, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTEXPUNGE, FAIL, "unable to expunge driver info block"); f->shared->drvinfo = NULL; } } /* end if */ /* Unpin & discard superblock */ if (sblock) { /* Unpin superblock in cache */ if (H5AC_unpin_entry(sblock) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTUNPIN, FAIL, "unable to unpin superblock"); /* Evict the superblock from the cache */ if (H5AC_expunge_entry(f, H5AC_SUPERBLOCK, (haddr_t)0, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTEXPUNGE, FAIL, "unable to expunge superblock"); f->shared->sblock = NULL; } /* end if */ } /* end if */ FUNC_LEAVE_NOAPI_TAG(ret_value) } /* end H5F__super_read() */ /*------------------------------------------------------------------------- * Function: H5F__super_init * * Purpose: Allocates the superblock for the file and initializes * information about the superblock in memory. Writes extension * messages if any are needed. * * Return: Success: SUCCEED * Failure: FAIL * *------------------------------------------------------------------------- */ herr_t H5F__super_init(H5F_t *f) { H5F_super_t *sblock = NULL; /* Superblock cache structure */ bool sblock_in_cache = false; /* Whether the superblock has been inserted into the metadata cache */ H5O_drvinfo_t *drvinfo = NULL; /* Driver info */ bool drvinfo_in_cache = false; /* Whether the driver info block has been inserted into the metadata cache */ H5P_genplist_t *plist; /* File creation property list */ H5AC_ring_t orig_ring = H5AC_RING_INV; hsize_t userblock_size; /* Size of userblock, in bytes */ hsize_t superblock_size = 0; /* Size of superblock, in bytes */ haddr_t superblock_addr = HADDR_UNDEF; size_t driver_size; /* Size of driver info block (bytes) */ unsigned super_vers = HDF5_SUPERBLOCK_VERSION_DEF; /* Superblock version for file */ H5O_loc_t ext_loc; /* Superblock extension object location */ bool need_ext; /* Whether the superblock extension is needed */ bool ext_created = false; /* Whether the extension has been created */ bool non_default_fs_settings = false; /* Whether the file has non-default free-space settings */ herr_t ret_value = SUCCEED; /* Return Value */ FUNC_ENTER_PACKAGE_TAG(H5AC__SUPERBLOCK_TAG) /* Allocate space for the superblock */ if (NULL == (sblock = H5FL_CALLOC(H5F_super_t))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed"); /* Initialize various address information */ sblock->base_addr = HADDR_UNDEF; sblock->ext_addr = HADDR_UNDEF; sblock->driver_addr = HADDR_UNDEF; sblock->root_addr = HADDR_UNDEF; /* Get the shared file creation property list */ if (NULL == (plist = (H5P_genplist_t *)H5I_object(f->shared->fcpl_id))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list"); /* Initialize sym_leaf_k */ if (H5P_get(plist, H5F_CRT_SYM_LEAF_NAME, &sblock->sym_leaf_k) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get byte number for object size"); /* Initialize btree_k */ if (H5P_get(plist, H5F_CRT_BTREE_RANK_NAME, &sblock->btree_k[0]) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "unable to get rank for btree internal nodes"); /* Check for non-default free-space settings */ if (!(f->shared->fs_strategy == H5F_FILE_SPACE_STRATEGY_DEF && f->shared->fs_persist == H5F_FREE_SPACE_PERSIST_DEF && f->shared->fs_threshold == H5F_FREE_SPACE_THRESHOLD_DEF && f->shared->fs_page_size == H5F_FILE_SPACE_PAGE_SIZE_DEF)) non_default_fs_settings = true; /* * When creating a file with write access, the library will: * -- set superblock version to 0, 1 or 2 based on feature enabled * -- no change to low_bound * When creating a file with SWMR-write access, the library will: * (See explanation (#) below.) * -- set superblock version to 3 * -- upgrade low_bound to at least V110 * * Then the library will finalize superblock version to that allowed by * low_bound if that is higher. * Lastly, the library will check to ensure the superblock version does not * exceed the version allowed by high_bound. Otherwise fail file open. * * For details, please see RFC:Setting Bounds for Object Creation in HDF5 1.10.0. * * (#) * Version 3 superblock is introduced in 1.10 for SWMR due to the problem of * the status_flags field in the superblock. The problem is discussed in * jira issue SWMR-79 and also in the RFC: File Format Changes in HDF5 1.10.0. * The file's low_bound is upgraded for SWMR so that the library will * use the best format versions available in 1.10. * Due to the possible upgrade, the fapl returned from H5Fget_access_plist() * might indicate a low_bound higher than what the user originally set. */ /* * Creating a file with SWMR-write access will * upgrade superblock version and low_bound */ if (H5F_INTENT(f) & H5F_ACC_SWMR_WRITE) { super_vers = HDF5_SUPERBLOCK_VERSION_3; f->shared->low_bound = MAX(H5F_LIBVER_V110, f->shared->low_bound); /* Bump superblock version to create superblock extension for SOHM info */ } else if (f->shared->sohm_nindexes > 0) super_vers = HDF5_SUPERBLOCK_VERSION_2; /* * Bump superblock version to create superblock extension for: * -- non-default file space strategy or * -- non-default persisting free-space or * -- non-default free-space threshold or * -- non-default page_size */ else if (non_default_fs_settings) super_vers = HDF5_SUPERBLOCK_VERSION_2; /* Check for non-default indexed storage B-tree internal 'K' value * and set the version # of the superblock to 1 if it is a non-default * value. */ else if (sblock->btree_k[H5B_CHUNK_ID] != HDF5_BTREE_CHUNK_IK_DEF) super_vers = HDF5_SUPERBLOCK_VERSION_1; /* Finalize superblock version to that allowed by the file's low bound if higher */ super_vers = MAX(super_vers, HDF5_superblock_ver_bounds[f->shared->low_bound]); /* Version bounds check */ if (super_vers > HDF5_superblock_ver_bounds[f->shared->high_bound]) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "superblock version out of bounds"); /* If a newer superblock version is required, set it here */ if (super_vers != HDF5_SUPERBLOCK_VERSION_DEF) { H5P_genplist_t *c_plist; /* Property list */ if (NULL == (c_plist = (H5P_genplist_t *)H5I_object(f->shared->fcpl_id))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not property list"); if (H5P_set(c_plist, H5F_CRT_SUPER_VERS_NAME, &super_vers) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "unable to set superblock version"); } /* end if */ if (H5FD_set_paged_aggr(f->shared->lf, (bool)H5F_PAGED_AGGR(f)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "failed to set paged_aggr status for file driver"); /* * The superblock starts immediately after the user-defined * header, which we have already insured is a proper size. The * base address is set to the same thing as the superblock for * now. */ if (H5P_get(plist, H5F_CRT_USER_BLOCK_NAME, &userblock_size) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get userblock size"); /* Sanity check the userblock size vs. the file's allocation alignment */ if (userblock_size > 0) { /* Set up the alignment to use for page or aggr fs */ hsize_t alignment = H5F_PAGED_AGGR(f) ? f->shared->fs_page_size : f->shared->alignment; if (userblock_size < alignment) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "userblock size must be > file object alignment"); if (0 != (userblock_size % alignment)) HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "userblock size must be an integral multiple of file object alignment"); } /* end if */ sblock->base_addr = userblock_size; sblock->status_flags = 0; /* Reserve space for the userblock */ if (H5F__set_eoa(f, H5FD_MEM_SUPER, userblock_size) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to set EOA value for userblock"); /* Set the base address for the file in the VFD now, after allocating * space for userblock. */ if (H5F__set_base_addr(f, sblock->base_addr) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "failed to set base address for file driver"); /* Save a local copy of the superblock version number, size of addresses & offsets */ sblock->super_vers = super_vers; sblock->sizeof_addr = f->shared->sizeof_addr; sblock->sizeof_size = f->shared->sizeof_size; /* Compute the size of the superblock */ superblock_size = (hsize_t)H5F_SUPERBLOCK_SIZE(sblock); /* Compute the size of the driver information block */ H5_CHECKED_ASSIGN(driver_size, size_t, H5FD_sb_size(f->shared->lf), hsize_t); /* The following code sets driver_size to the valued needed * for the driver info block, and sets the driver info block * address regardless of the version of the superblock. */ if (driver_size > 0) { /* Add in the driver info header, for older superblocks */ /* Superblock versions >= 2 will put the driver info in a message * and don't need the header -QAK, 1/4/2017 */ if (super_vers < HDF5_SUPERBLOCK_VERSION_2) driver_size += H5F_DRVINFOBLOCK_HDR_SIZE; /* * The file driver information block begins immediately after the * superblock. (relative to base address in file) */ sblock->driver_addr = superblock_size; } /* end if */ /* * Allocate space for the superblock & driver info block. * We do it with one allocation request because the superblock needs to be * at the beginning of the file and only the first allocation request is * required to return memory at format address zero. */ if (super_vers < HDF5_SUPERBLOCK_VERSION_2) superblock_size += driver_size; /* Set the ring type in the API context */ H5AC_set_ring(H5AC_RING_SB, &orig_ring); /* Insert superblock into cache, pinned */ if (H5AC_insert_entry(f, H5AC_SUPERBLOCK, (haddr_t)0, sblock, H5AC__PIN_ENTRY_FLAG | H5AC__FLUSH_LAST_FLAG | H5AC__FLUSH_COLLECTIVELY_FLAG) < 0) HGOTO_ERROR(H5E_CACHE, H5E_CANTINS, FAIL, "can't add superblock to cache"); sblock_in_cache = true; /* Keep a copy of the superblock info */ f->shared->sblock = sblock; /* Allocate space for the superblock */ if (HADDR_UNDEF == (superblock_addr = H5MF_alloc(f, H5FD_MEM_SUPER, superblock_size))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for superblock"); /* set the drvinfo filed to NULL -- will overwrite this later if needed */ f->shared->drvinfo = NULL; /* * Determine if we will need a superblock extension */ /* Files with SOHM indices always need the superblock extension */ if (f->shared->sohm_nindexes > 0) { assert(super_vers >= HDF5_SUPERBLOCK_VERSION_2); need_ext = true; } /* end if */ /* Files with non-default free space settings always need the superblock extension */ else if (non_default_fs_settings) { assert(super_vers >= HDF5_SUPERBLOCK_VERSION_2); need_ext = true; } /* end if */ /* If we're going to use a version of the superblock format which allows * for the superblock extension, check for non-default values to store * in it. */ else if (super_vers >= HDF5_SUPERBLOCK_VERSION_2) { /* Check for non-default v1 B-tree 'K' values to store */ if (sblock->btree_k[H5B_SNODE_ID] != HDF5_BTREE_SNODE_IK_DEF || sblock->btree_k[H5B_CHUNK_ID] != HDF5_BTREE_CHUNK_IK_DEF || sblock->sym_leaf_k != H5F_CRT_SYM_LEAF_DEF) need_ext = true; /* Check for driver info to store */ else if (driver_size > 0) need_ext = true; else need_ext = false; } /* end if */ else need_ext = false; /* Set the ring type in the API context */ H5AC_set_ring(H5AC_RING_SBE, NULL); /* Create the superblock extension for "extra" superblock data, if necessary. */ if (need_ext) { /* The superblock extension isn't actually a group, but the * default group creation list should work fine. * If we don't supply a size for the object header, HDF5 will * allocate H5O_MIN_SIZE by default. This is currently * big enough to hold the biggest possible extension, but should * be tuned if more information is added to the superblock * extension. */ if (H5F__super_ext_create(f, &ext_loc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "unable to create superblock extension"); ext_created = true; /* Create the Shared Object Header Message table and register it with * the metadata cache, if this file supports shared messages. */ if (f->shared->sohm_nindexes > 0) { /* Initialize the shared message code & write the SOHM message to the extension */ if (H5SM_init(f, plist, &ext_loc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to create SOHM table"); } /* Check for non-default v1 B-tree 'K' values to store */ if (sblock->btree_k[H5B_SNODE_ID] != HDF5_BTREE_SNODE_IK_DEF || sblock->btree_k[H5B_CHUNK_ID] != HDF5_BTREE_CHUNK_IK_DEF || sblock->sym_leaf_k != H5F_CRT_SYM_LEAF_DEF) { H5O_btreek_t btreek; /* v1 B-tree 'K' value message for superblock extension */ /* Write v1 B-tree 'K' value information to the superblock extension */ btreek.btree_k[H5B_CHUNK_ID] = sblock->btree_k[H5B_CHUNK_ID]; btreek.btree_k[H5B_SNODE_ID] = sblock->btree_k[H5B_SNODE_ID]; btreek.sym_leaf_k = sblock->sym_leaf_k; if (H5O_msg_create(&ext_loc, H5O_BTREEK_ID, H5O_MSG_FLAG_CONSTANT | H5O_MSG_FLAG_DONTSHARE, H5O_UPDATE_TIME, &btreek) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to update v1 B-tree 'K' value header message"); } /* end if */ /* Check for driver info to store */ if (driver_size > 0) { H5O_drvinfo_t info; /* Driver info */ uint8_t dbuf[H5F_MAX_DRVINFOBLOCK_SIZE]; /* Driver info block encoding buffer */ /* Sanity check */ assert(driver_size <= H5F_MAX_DRVINFOBLOCK_SIZE); /* Encode driver-specific data */ memset(dbuf, 0, sizeof(dbuf)); if (H5FD_sb_encode(f->shared->lf, info.name, dbuf) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to encode driver information"); /* Write driver info information to the superblock extension */ info.len = driver_size; info.buf = dbuf; if (H5O_msg_create(&ext_loc, H5O_DRVINFO_ID, H5O_MSG_FLAG_DONTSHARE, H5O_UPDATE_TIME, &info) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to update driver info header message"); assert(false == f->shared->drvinfo_sb_msg_exists); f->shared->drvinfo_sb_msg_exists = true; } /* end if */ /* Check for non-default free-space info settings */ if (non_default_fs_settings) { H5F_mem_page_t ptype; H5O_fsinfo_t fsinfo; /* Free space manager info message */ /* Write free-space manager info message to superblock extension object header if needed */ fsinfo.strategy = f->shared->fs_strategy; fsinfo.persist = f->shared->fs_persist; fsinfo.threshold = f->shared->fs_threshold; fsinfo.page_size = f->shared->fs_page_size; fsinfo.pgend_meta_thres = f->shared->pgend_meta_thres; fsinfo.eoa_pre_fsm_fsalloc = HADDR_UNDEF; fsinfo.mapped = false; /* Set the version for the fsinfo message */ if (H5O_fsinfo_set_version(H5F_LOW_BOUND(f), H5F_HIGH_BOUND(f), &fsinfo) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "can't set version of fsinfo"); f->shared->fs_version = fsinfo.version; for (ptype = H5F_MEM_PAGE_SUPER; ptype < H5F_MEM_PAGE_NTYPES; ptype++) fsinfo.fs_addr[ptype - 1] = HADDR_UNDEF; if (H5O_msg_create(&ext_loc, H5O_FSINFO_ID, H5O_MSG_FLAG_DONTSHARE | H5O_MSG_FLAG_MARK_IF_UNKNOWN, H5O_UPDATE_TIME, &fsinfo) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to update free-space info header message"); } /* end if */ } /* end if */ else { /* Check for creating an "old-style" driver info block */ if (driver_size > 0) { /* Sanity check */ assert(H5_addr_defined(sblock->driver_addr)); /* Allocate space for the driver info */ if (NULL == (drvinfo = (H5O_drvinfo_t *)H5MM_calloc(sizeof(H5O_drvinfo_t)))) HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, FAIL, "memory allocation failed for driver info message"); /* Set up driver info message */ /* (NOTE: All the actual information (name & driver information) is * actually based on the VFD info in the file handle and * will be encoded by the VFD's 'encode' callback, so it * doesn't need to be set here. -QAK, 7/20/2013 */ H5_CHECKED_ASSIGN(drvinfo->len, size_t, H5FD_sb_size(f->shared->lf), hsize_t); /* Insert driver info block into cache */ if (H5AC_insert_entry(f, H5AC_DRVRINFO, sblock->driver_addr, drvinfo, H5AC__PIN_ENTRY_FLAG | H5AC__FLUSH_LAST_FLAG | H5AC__FLUSH_COLLECTIVELY_FLAG) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTINS, FAIL, "can't add driver info block to cache"); drvinfo_in_cache = true; f->shared->drvinfo = drvinfo; } /* end if */ else assert(!H5_addr_defined(sblock->driver_addr)); } /* end if */ done: /* Reset the ring in the API context */ if (orig_ring != H5AC_RING_INV) H5AC_set_ring(orig_ring, NULL); /* Close superblock extension, if it was created */ if (ext_created && H5F__super_ext_close(f, &ext_loc, ext_created) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "unable to close file's superblock extension"); /* Cleanup on failure */ if (ret_value < 0) { /* Check if the driver info block has been allocated yet */ if (drvinfo) { /* Check if we've cached it already */ if (drvinfo_in_cache) { /* Unpin drvinfo in cache */ if (H5AC_unpin_entry(drvinfo) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTUNPIN, FAIL, "unable to unpin driver info"); /* Evict the driver info block from the cache */ if (H5AC_expunge_entry(f, H5AC_DRVRINFO, sblock->driver_addr, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTEXPUNGE, FAIL, "unable to expunge driver info block"); } /* end if */ else /* Free driver info block */ H5MM_xfree(drvinfo); } /* end if */ /* Check if the superblock has been allocated yet */ if (sblock) { if (non_default_fs_settings && H5_addr_defined(superblock_addr)) { /* * For non-default free-space settings, the allocation of * space in the file for the superblock may have have allocated * memory for the free-space manager and inserted it into the * metadata cache. Clean that up before returning or we may fail * to close the file later due to the metadata cache's metadata * free space manager ring (H5AC_RING_MDFSM) not being clean. */ if (H5MF_try_close(f) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTFREE, FAIL, "can't close file free space manager"); } /* Check if we've cached it already */ if (sblock_in_cache) { /* Unpin superblock in cache */ if (H5AC_unpin_entry(sblock) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTUNPIN, FAIL, "unable to unpin superblock"); /* Evict the superblock from the cache */ if (H5AC_expunge_entry(f, H5AC_SUPERBLOCK, (haddr_t)0, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTEXPUNGE, FAIL, "unable to expunge superblock"); } /* end if */ else /* Free superblock */ if (H5F__super_free(sblock) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTFREE, FAIL, "unable to destroy superblock"); /* Reset variables in file structure */ f->shared->sblock = NULL; } /* end if */ } /* end if */ FUNC_LEAVE_NOAPI_TAG(ret_value) } /* end H5F__super_init() */ /*------------------------------------------------------------------------- * Function: H5F_eoa_dirty * * Purpose: Mark the file's EOA info dirty * * Return: Success: non-negative on success * Failure: Negative * *------------------------------------------------------------------------- */ herr_t H5F_eoa_dirty(H5F_t *f) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) /* Sanity check */ assert(f); assert(f->shared); assert(f->shared->sblock); /* Mark superblock dirty in cache, so change to EOA will get encoded */ if (H5F_super_dirty(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty"); /* If the driver information block exists, mark it dirty as well * so that the change in eoa will be reflected there as well if * appropriate. */ if (f->shared->drvinfo) { if (H5AC_mark_entry_dirty(f->shared->drvinfo) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark drvinfo as dirty"); } /* end if */ /* If the driver info is stored as a message, update that instead */ else if (f->shared->drvinfo_sb_msg_exists) { if (H5F__update_super_ext_driver_msg(f) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark drvinfo message as dirty"); } done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F_eoa_dirty() */ /*------------------------------------------------------------------------- * Function: H5F_super_dirty * * Purpose: Mark the file's superblock dirty * * Return: Success: non-negative on success * Failure: Negative * *------------------------------------------------------------------------- */ herr_t H5F_super_dirty(H5F_t *f) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) /* Sanity check */ assert(f); assert(f->shared); assert(f->shared->sblock); /* Mark superblock dirty in cache, so change to EOA will get encoded */ if (H5AC_mark_entry_dirty(f->shared->sblock) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty"); done: FUNC_LEAVE_NOAPI(ret_value) } /* H5F_super_dirty() */ /*------------------------------------------------------------------------- * Function: H5F__super_free * * Purpose: Destroyer the file's superblock * * Return: Success: non-negative on success * Failure: Negative * *------------------------------------------------------------------------- */ herr_t H5F__super_free(H5F_super_t *sblock) { FUNC_ENTER_PACKAGE_NOERR /* Sanity check */ assert(sblock); /* Free root group symbol table entry, if any */ sblock->root_ent = (H5G_entry_t *)H5MM_xfree(sblock->root_ent); /* Free superblock */ sblock = (H5F_super_t *)H5FL_FREE(H5F_super_t, sblock); FUNC_LEAVE_NOAPI(SUCCEED) } /* H5F__super_free() */ /*------------------------------------------------------------------------- * Function: H5F__super_size * * Purpose: Get storage size of the superblock and superblock extension * * Return: Success: non-negative on success * Failure: Negative * *------------------------------------------------------------------------- */ herr_t H5F__super_size(H5F_t *f, hsize_t *super_size, hsize_t *super_ext_size) { H5AC_ring_t orig_ring = H5AC_RING_INV; /* Original ring value */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity check */ assert(f); assert(f->shared); assert(f->shared->sblock); /* Set the superblock size */ if (super_size) *super_size = (hsize_t)H5F_SUPERBLOCK_SIZE(f->shared->sblock); /* Set the superblock extension size */ if (super_ext_size) { if (H5_addr_defined(f->shared->sblock->ext_addr)) { H5O_loc_t ext_loc; /* "Object location" for superblock extension */ H5O_hdr_info_t hdr_info; /* Object info for superblock extension */ /* Set up "fake" object location for superblock extension */ H5O_loc_reset(&ext_loc); ext_loc.file = f; ext_loc.addr = f->shared->sblock->ext_addr; /* Set the ring type in the API context */ H5AC_set_ring(H5AC_RING_SBE, &orig_ring); /* Get object header info for superblock extension */ if (H5O_get_hdr_info(&ext_loc, &hdr_info) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to retrieve superblock extension info"); /* Set the superblock extension size */ *super_ext_size = hdr_info.space.total; } /* end if */ else /* Set the superblock extension size to zero */ *super_ext_size = (hsize_t)0; } /* end if */ done: /* Reset the ring in the API context */ if (orig_ring != H5AC_RING_INV) H5AC_set_ring(orig_ring, NULL); FUNC_LEAVE_NOAPI(ret_value) } /* H5F__super_size() */ /*------------------------------------------------------------------------- * Function: H5F__super_ext_write_msg() * * Purpose: Write the message with ID to the superblock extension * * Return: Non-negative on success/Negative on failure * *------------------------------------------------------------------------- */ herr_t H5F__super_ext_write_msg(H5F_t *f, unsigned id, void *mesg, bool may_create, unsigned mesg_flags) { H5AC_ring_t orig_ring = H5AC_RING_INV; /* Original ring value */ bool ext_created = false; /* Whether superblock extension was created */ bool ext_opened = false; /* Whether superblock extension was opened */ H5O_loc_t ext_loc; /* "Object location" for superblock extension */ htri_t status; /* Indicate whether the message exists or not */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Sanity checks */ assert(f); assert(f->shared); assert(f->shared->sblock); /* Set the ring type in the API context */ H5AC_set_ring(H5AC_RING_SBE, &orig_ring); /* Open/create the superblock extension object header */ if (H5_addr_defined(f->shared->sblock->ext_addr)) { if (H5F__super_ext_open(f, f->shared->sblock->ext_addr, &ext_loc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENOBJ, FAIL, "unable to open file's superblock extension"); } /* end if */ else { assert(may_create); if (H5F__super_ext_create(f, &ext_loc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "unable to create file's superblock extension"); ext_created = true; } /* end else */ assert(H5_addr_defined(ext_loc.addr)); ext_opened = true; /* Check if message with ID does not exist in the object header */ if ((status = H5O_msg_exists(&ext_loc, id)) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to check object header for message or message exists"); /* Check for creating vs. writing */ if (may_create) { if (status) HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "Message should not exist"); /* Create the message with ID in the superblock extension */ if (H5O_msg_create(&ext_loc, id, (mesg_flags | H5O_MSG_FLAG_DONTSHARE), H5O_UPDATE_TIME, mesg) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to create the message in object header"); } /* end if */ else { if (!status) HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "Message should exist"); /* Update the message with ID in the superblock extension */ if (H5O_msg_write(&ext_loc, id, (mesg_flags | H5O_MSG_FLAG_DONTSHARE), H5O_UPDATE_TIME, mesg) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to write the message in object header"); } /* end else */ done: /* Reset the ring in the API context */ if (orig_ring != H5AC_RING_INV) H5AC_set_ring(orig_ring, NULL); /* Close the superblock extension, if it was opened */ if (ext_opened && H5F__super_ext_close(f, &ext_loc, ext_created) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "unable to close file's superblock extension"); /* Mark superblock dirty in cache, if superblock extension was created */ if (ext_created && H5AC_mark_entry_dirty(f->shared->sblock) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty"); FUNC_LEAVE_NOAPI(ret_value) } /* H5F__super_ext_write_msg() */ /*------------------------------------------------------------------------- * Function: H5F__super_ext_remove_msg * * Purpose: Remove the message with ID from the superblock extension * * Return: Non-negative on success/Negative on failure * *------------------------------------------------------------------------- */ herr_t H5F__super_ext_remove_msg(H5F_t *f, unsigned id) { H5AC_ring_t orig_ring = H5AC_RING_INV; /* Original ring value */ H5O_loc_t ext_loc; /* "Object location" for superblock extension */ bool ext_opened = false; /* Whether the superblock extension was opened */ int null_count = 0; /* # of null messages */ htri_t status; /* Indicate whether the message exists or not */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE /* Make sure that the superblock extension object header exists */ assert(H5_addr_defined(f->shared->sblock->ext_addr)); /* Set the ring type in the API context */ H5AC_set_ring(H5AC_RING_SBE, &orig_ring); /* Open superblock extension object header */ if (H5F__super_ext_open(f, f->shared->sblock->ext_addr, &ext_loc) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "error in starting file's superblock extension"); ext_opened = true; /* Check if message with ID exists in the object header */ if ((status = H5O_msg_exists(&ext_loc, id)) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to check object header for message"); else if (status) { /* message exists */ H5O_hdr_info_t hdr_info; /* Object header info for superblock extension */ /* Remove the message */ if (H5O_msg_remove(&ext_loc, id, H5O_ALL, true) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, FAIL, "unable to delete free-space manager info message"); /* Get info for the superblock extension's object header */ if (H5O_get_hdr_info(&ext_loc, &hdr_info) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to retrieve superblock extension info"); /* If the object header is an empty base chunk, remove superblock extension */ if (hdr_info.nchunks == 1) { if ((null_count = H5O_msg_count(&ext_loc, H5O_NULL_ID)) < 0) HGOTO_ERROR(H5E_SYM, H5E_CANTCOUNT, FAIL, "unable to count messages"); else if ((unsigned)null_count == hdr_info.nmesgs) { assert(H5_addr_defined(ext_loc.addr)); if (H5O_delete(f, ext_loc.addr) < 0) HGOTO_ERROR(H5E_SYM, H5E_CANTCOUNT, FAIL, "unable to count messages"); f->shared->sblock->ext_addr = HADDR_UNDEF; } /* end else-if */ } /* end if */ } /* end if */ done: /* Reset the ring in the API context */ if (orig_ring != H5AC_RING_INV) H5AC_set_ring(orig_ring, NULL); /* Close superblock extension object header, if opened */ if (ext_opened && H5F__super_ext_close(f, &ext_loc, false) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "unable to close file's superblock extension"); FUNC_LEAVE_NOAPI(ret_value) } /* H5F__super_ext_remove_msg() */