1/*
2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26/*
27 */
28
29#include "jni.h"
30#include "jni_util.h"
31#include "jvm.h"
32#include "jlong.h"
33#include "sun_nio_ch_DatagramDispatcher.h"
34#include <sys/types.h>
35#include <sys/uio.h>
36#include <sys/socket.h>
37#include <string.h>
38
39#include "nio_util.h"
40#include <limits.h>
41
42JNIEXPORT jint JNICALL
43Java_sun_nio_ch_DatagramDispatcher_read0(JNIEnv *env, jclass clazz,
44 jobject fdo, jlong address, jint len)
45{
46 jint fd = fdval(env, fdo);
47 void *buf = (void *)jlong_to_ptr(address);
48 int result = recv(fd, buf, len, 0);
49 if (result < 0 && errno == ECONNREFUSED) {
50 JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
51 return -2;
52 }
53 return convertReturnVal(env, result, JNI_TRUE);
54}
55
56
57JNIEXPORT jlong JNICALL
58Java_sun_nio_ch_DatagramDispatcher_readv0(JNIEnv *env, jclass clazz,
59 jobject fdo, jlong address, jint len)
60{
61 jint fd = fdval(env, fdo);
62 ssize_t result = 0;
63 struct iovec *iov = (struct iovec *)jlong_to_ptr(address);
64 struct msghdr m;
65 if (len > IOV_MAX) {
66 len = IOV_MAX;
67 }
68
69 // initialize the message
70 memset(&m, 0, sizeof(m));
71 m.msg_iov = iov;
72 m.msg_iovlen = len;
73
74 result = recvmsg(fd, &m, 0);
75 if (result < 0 && errno == ECONNREFUSED) {
76 JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
77 return -2;
78 }
79 return convertLongReturnVal(env, (jlong)result, JNI_TRUE);
80}
81
82JNIEXPORT jint JNICALL
83Java_sun_nio_ch_DatagramDispatcher_write0(JNIEnv *env, jclass clazz,
84 jobject fdo, jlong address, jint len)
85{
86 jint fd = fdval(env, fdo);
87 void *buf = (void *)jlong_to_ptr(address);
88 int result = send(fd, buf, len, 0);
89 if (result < 0 && errno == ECONNREFUSED) {
90 JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
91 return -2;
92 }
93 return convertReturnVal(env, result, JNI_FALSE);
94}
95
96JNIEXPORT jlong JNICALL
97Java_sun_nio_ch_DatagramDispatcher_writev0(JNIEnv *env, jclass clazz,
98 jobject fdo, jlong address, jint len)
99{
100 jint fd = fdval(env, fdo);
101 struct iovec *iov = (struct iovec *)jlong_to_ptr(address);
102 struct msghdr m;
103 ssize_t result = 0;
104 if (len > IOV_MAX) {
105 len = IOV_MAX;
106 }
107
108 // initialize the message
109 memset(&m, 0, sizeof(m));
110 m.msg_iov = iov;
111 m.msg_iovlen = len;
112
113 result = sendmsg(fd, &m, 0);
114 if (result < 0 && errno == ECONNREFUSED) {
115 JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
116 return -2;
117 }
118 return convertLongReturnVal(env, (jlong)result, JNI_FALSE);
119}
120