1 /*
2 * Copyright (c) 1997, 2010, 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 #ifndef NET_UTILS_MD_H
27 #define NET_UTILS_MD_H
28
29 #include <sys/socket.h>
30 #include <sys/types.h>
31 #include <netdb.h>
32 #include <netinet/in.h>
33 #include <unistd.h>
34
35 #ifndef USE_SELECT
36 #include <sys/poll.h>
37 #endif
38
39
40 #if defined(__linux__) || defined(MACOSX)
41 extern int NET_Timeout(int s, long timeout);
42 extern int NET_Read(int s, void* buf, size_t len);
43 extern int NET_RecvFrom(int s, void *buf, int len, unsigned int flags,
44 struct sockaddr *from, int *fromlen);
45 extern int NET_ReadV(int s, const struct iovec * vector, int count);
46 extern int NET_Send(int s, void *msg, int len, unsigned int flags);
47 extern int NET_SendTo(int s, const void *msg, int len, unsigned int
48 flags, const struct sockaddr *to, int tolen);
49 extern int NET_Writev(int s, const struct iovec * vector, int count);
50 extern int NET_Connect(int s, struct sockaddr *addr, int addrlen);
51 extern int NET_Accept(int s, struct sockaddr *addr, int *addrlen);
52 extern int NET_SocketClose(int s);
53 extern int NET_Dup2(int oldfd, int newfd);
54
55 #ifdef USE_SELECT
56 extern int NET_Select(int s, fd_set *readfds, fd_set *writefds,
57 fd_set *exceptfds, struct timeval *timeout);
58 #else
59 extern int NET_Poll(struct pollfd *ufds, unsigned int nfds, int timeout);
60 #endif
61
62 #else
63
64 #define NET_Timeout JVM_Timeout
65 #define NET_Read JVM_Read
66 #define NET_RecvFrom JVM_RecvFrom
67 #define NET_ReadV readv
68 #define NET_Send JVM_Send
69 #define NET_SendTo JVM_SendTo
70 #define NET_WriteV writev
71 #define NET_Connect JVM_Connect
72 #define NET_Accept JVM_Accept
73 #define NET_SocketClose JVM_SocketClose
74 #define NET_Dup2 dup2
75 #define NET_Select select
76 #define NET_Poll poll
77
78 #endif
79
80 #if defined(__linux__) && defined(AF_INET6)
81 int getDefaultIPv6Interface(struct in6_addr *target_addr);
82 #endif
83
84 #ifdef __solaris__
85 extern int net_getParam(char *driver, char *param);
86 #endif
87
88 /* needed from libsocket on Solaris 8 */
89
90 typedef int (*getaddrinfo_f)(const char *nodename, const char *servname,
91 const struct addrinfo *hints, struct addrinfo **res);
92
93 typedef void (*freeaddrinfo_f)(struct addrinfo *);
94
95 typedef const char * (*gai_strerror_f)(int ecode);
96
97 typedef int (*getnameinfo_f)(const struct sockaddr *, size_t,
98 char *, size_t, char *, size_t, int);
99
100 extern getaddrinfo_f getaddrinfo_ptr;
101 extern freeaddrinfo_f freeaddrinfo_ptr;
102 extern getnameinfo_f getnameinfo_ptr;
103
104 void ThrowUnknownHostExceptionWithGaiError(JNIEnv *env,
105 const char* hostname,
106 int gai_error);
107
108 /* do we have address translation support */
109
110 extern jboolean NET_addrtransAvailable();
111
112 #define NET_WAIT_READ 0x01
113 #define NET_WAIT_WRITE 0x02
114 #define NET_WAIT_CONNECT 0x04
115
116 extern jint NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout);
117
118 /************************************************************************
119 * Macros and constants
120 */
121
122 /*
123 * On 64-bit JDKs we use a much larger stack and heap buffer.
124 */
125 #ifdef _LP64
126 #define MAX_BUFFER_LEN 65536
127 #define MAX_HEAP_BUFFER_LEN 131072
128 #else
129 #define MAX_BUFFER_LEN 8192
130 #define MAX_HEAP_BUFFER_LEN 65536
131 #endif
132
133 #ifdef AF_INET6
134
135 #define SOCKADDR union { \
136 struct sockaddr_in him4; \
137 struct sockaddr_in6 him6; \
138 }
139
140 #define SOCKADDR_LEN (ipv6_available() ? sizeof(SOCKADDR) : \
141 sizeof(struct sockaddr_in))
142
143 #else
144
145 #define SOCKADDR union { struct sockaddr_in him4; }
146 #define SOCKADDR_LEN sizeof(SOCKADDR)
147
148 #endif
149
150 /************************************************************************
151 * Utilities
152 */
153 #ifdef __linux__
154 extern int kernelIsV22();
155 extern int kernelIsV24();
156 #endif
157
158 void NET_ThrowByNameWithLastError(JNIEnv *env, const char *name,
159 const char *defaultDetail);
160
161
162 #endif /* NET_UTILS_MD_H */