diff options
Diffstat (limited to 'src/H5F.c')
| -rw-r--r-- | src/H5F.c | 70 |
1 files changed, 70 insertions, 0 deletions
@@ -1442,3 +1442,73 @@ done: FUNC_LEAVE_API(ret_value) } /* end H5Fclear_elink_file_cache() */ + +/*------------------------------------------------------------------------- + * Function: H5Fformat_convert_super (Internal) + * + * Purpose: Downgrade the superblock version to v2 and + * downgrade persistent file space to non-persistent + * for 1.8 library. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Vailin Choi + * Jan 2016 + * + *------------------------------------------------------------------------- + */ +herr_t +H5Fformat_convert(hid_t fid) +{ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_API(FAIL) + H5TRACE1("e", "i", fid); + + if(H5I_FILE == H5I_get_type(fid)) { + H5F_t *f; /* File to flush */ + hbool_t mark_dirty = FALSE; + + /* Get file object */ + if(NULL == (f = (H5F_t *)H5I_object(fid))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid file identifier") + + /* Check if the superblock should be downgraded */ + if(f->shared->sblock->super_vers > HDF5_SUPERBLOCK_VERSION_V18_LATEST) { + f->shared->sblock->super_vers = HDF5_SUPERBLOCK_VERSION_V18_LATEST; + mark_dirty = TRUE; + } /* end if */ + + /* Check for persistent freespace manager, which needs to be downgraded */ + if(!(f->shared->fs_strategy == H5F_FILE_SPACE_STRATEGY_DEF && + f->shared->fs_threshold == H5F_FREE_SPACE_THRESHOLD_DEF)) { + /* Check to remove free-space manager info message from superblock extension */ + if(H5F_addr_defined(f->shared->sblock->ext_addr)) + if(H5F_super_ext_remove_msg(f, H5AC_ind_read_dxpl_id, H5O_FSINFO_ID) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "error in removing message from superblock extension") + + /* Close freespace manager */ + if(H5MF_try_close(f, H5AC_ind_read_dxpl_id) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "unable to free free-space address") + + /* Set non-persistent freespace manager */ + f->shared->fs_strategy = H5F_FILE_SPACE_STRATEGY_DEF; + f->shared->fs_threshold = H5F_FREE_SPACE_THRESHOLD_DEF; + + /* Indicate that the superblock should be marked dirty */ + mark_dirty = TRUE; + } /* end if */ + + /* Check if we should mark the superblock dirty */ + if(mark_dirty) + /* Mark superblock as dirty */ + if(H5F_super_dirty(f) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty") + } /* end if */ + else + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file or file object") + +done: + FUNC_LEAVE_API(ret_value) +} /* end H5Fformat_convert() */ + |