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view src/os/os_config.c @ 0:a1985f14b030
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author | chegar |
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date | Fri, 11 May 2012 10:42:02 +0100 |
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/*- * See the file LICENSE for redistribution information. * * Copyright (c) 1998, 2012 Oracle and/or its affiliates. All rights reserved. * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * * $Id$ */ #include "db_config.h" #include "db_int.h" /* * __os_fs_notzero -- * Return 1 if allocated filesystem blocks are not zeroed. * * PUBLIC: int __os_fs_notzero __P((void)); */ int __os_fs_notzero() { /* Most filesystems zero out implicitly created pages. */ return (0); } /* * __os_support_direct_io -- * Return 1 if we support direct I/O. * * PUBLIC: int __os_support_direct_io __P((void)); */ int __os_support_direct_io() { int ret; ret = 0; #ifdef HAVE_O_DIRECT ret = 1; #endif #if defined(HAVE_DIRECTIO) && defined(DIRECTIO_ON) ret = 1; #endif return (ret); } /* * __os_support_db_register -- * Return 1 if the system supports DB_REGISTER. * * PUBLIC: int __os_support_db_register __P((void)); */ int __os_support_db_register() { return (1); } /* * __os_support_replication -- * Return 1 if the system supports replication. * * PUBLIC: int __os_support_replication __P((void)); */ int __os_support_replication() { return (1); }