| /* |
| * Copyright (c) 1997, 2013, 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. |
| */ |
| |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| #include "jni.h" |
| #include "jni_util.h" |
| #include "jvm.h" |
| |
| #include "io_util_md.h" |
| #include "java_io_FileDescriptor.h" |
| |
| /*******************************************************************/ |
| /* BEGIN JNI ********* BEGIN JNI *********** BEGIN JNI ************/ |
| /*******************************************************************/ |
| |
| /* field id for jint 'fd' in java.io.FileDescriptor */ |
| jfieldID IO_fd_fdID; |
| |
| /* field id for jboolean 'append' in java.io.FileDescriptor */ |
| jfieldID IO_append_fdID; |
| |
| /************************************************************** |
| * static methods to store field ID's in initializers |
| */ |
| |
| JNIEXPORT void JNICALL |
| Java_java_io_FileDescriptor_initIDs(JNIEnv *env, jclass fdClass) { |
| CHECK_NULL(IO_fd_fdID = (*env)->GetFieldID(env, fdClass, "fd", "I")); |
| CHECK_NULL(IO_append_fdID = (*env)->GetFieldID(env, fdClass, "append", "Z")); |
| } |
| |
| /************************************************************** |
| * File Descriptor |
| */ |
| |
| JNIEXPORT void JNICALL |
| Java_java_io_FileDescriptor_sync(JNIEnv *env, jobject this) { |
| FD fd = THIS_FD(this); |
| if (IO_Sync(fd) == -1) { |
| JNU_ThrowByName(env, "java/io/SyncFailedException", "sync failed"); |
| } |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_java_io_FileDescriptor_getAppend(JNIEnv *env, jclass fdClass, jint fd) { |
| int flags = fcntl(fd, F_GETFL); |
| return ((flags & O_APPEND) == 0) ? JNI_FALSE : JNI_TRUE; |
| } |