1 /*
2 * Copyright (c) 1997, 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 #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 /*
41 AIX needs a workaround for I/O cancellation, see:
42 http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.ibm.aix.basetechref/doc/basetrf1/close.htm
43 ...
44 The close subroutine is blocked until all subroutines which use the file
45 descriptor return to usr space. For example, when a thread is calling close
46 and another thread is calling select with the same file descriptor, the
47 close subroutine does not return until the select call returns.
48 ...
49 */
50 #if defined (_AIX)
51 extern int IO_Fcntl(int s, int cmd, void *arg);
52 extern int IO_Read(int s, void* buf, size_t len);
53 extern int IO_Write(int s, void* buf, size_t len);
54 #endif
55
56 #if defined(__linux__) || defined(MACOSX) || defined (_AIX)
57 extern int NET_Timeout(int s, long timeout);
58 extern int NET_Read(int s, void* buf, size_t len);
59 extern int NET_RecvFrom(int s, void *buf, int len, unsigned int flags,
60 struct sockaddr *from, int *fromlen);
61 extern int NET_ReadV(int s, const struct iovec * vector, int count);
62 extern int NET_Send(int s, void *msg, int len, unsigned int flags);
63 extern int NET_SendTo(int s, const void *msg, int len, unsigned int
64 flags, const struct sockaddr *to, int tolen);
65 extern int NET_WriteV(int s, const struct iovec * vector, int count);
66 extern int NET_Connect(int s, struct sockaddr *addr, int addrlen);
67 extern int NET_Accept(int s, struct sockaddr *addr, int *addrlen);
68 extern int NET_SocketClose(int s);
69 extern int NET_Dup2(int oldfd, int newfd);
70
71 #ifdef USE_SELECT
72 extern int NET_Select(int s, fd_set *readfds, fd_set *writefds,
73 fd_set *exceptfds, struct timeval *timeout);
74 #else
75 extern int NET_Poll(struct pollfd *ufds, unsigned int nfds, int timeout);
76 #endif
77
78 #else
79
80 #define NET_Timeout JVM_Timeout
81 #define NET_Read JVM_Read
82 #define NET_RecvFrom JVM_RecvFrom
83 #define NET_ReadV readv
84 #define NET_Send JVM_Send
85 #define NET_SendTo JVM_SendTo
86 #define NET_WriteV writev
87 #define NET_Connect JVM_Connect
88 #define NET_Accept JVM_Accept
89 #define NET_SocketClose JVM_SocketClose
90 #define NET_Dup2 dup2
91 #define NET_Select select
92 #define NET_Poll poll
93
94 #endif
95
96 #ifdef _AIX
97 /* defined in src/aix/native/java/net/aix_close.c */
98 int javaToNativeEvents(int javaEvents);
99 int nativeToJavaEvents(int nativeEvents);
100 #endif
101
102 #if defined(__linux__) && defined(AF_INET6)
103 int getDefaultIPv6Interface(struct in6_addr *target_addr);
104 #endif
105
106
107 /* needed from libsocket on Solaris 8 */
108
109 typedef int (*getaddrinfo_f)(const char *nodename, const char *servname,
110 const struct addrinfo *hints, struct addrinfo **res);
111
112 typedef void (*freeaddrinfo_f)(struct addrinfo *);
113
114 typedef const char * (*gai_strerror_f)(int ecode);
115
116 typedef int (*getnameinfo_f)(const struct sockaddr *, size_t,
117 char *, size_t, char *, size_t, int);
118
119 extern getaddrinfo_f getaddrinfo_ptr;
120 extern freeaddrinfo_f freeaddrinfo_ptr;
121 extern getnameinfo_f getnameinfo_ptr;
122
123 void ThrowUnknownHostExceptionWithGaiError(JNIEnv *env,
124 const char* hostname,
125 int gai_error);
126
127 #define NET_WAIT_READ 0x01
128 #define NET_WAIT_WRITE 0x02
129 #define NET_WAIT_CONNECT 0x04
130
131 extern jint NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout);
132
133 /************************************************************************
134 * Macros and constants
135 */
136
137 /*
138 * On 64-bit JDKs we use a much larger stack and heap buffer.
139 */
140 #ifdef _LP64
141 #define MAX_BUFFER_LEN 65536
142 #define MAX_HEAP_BUFFER_LEN 131072
143 #else
144 #define MAX_BUFFER_LEN 8192
145 #define MAX_HEAP_BUFFER_LEN 65536
146 #endif
147
148 #ifdef AF_INET6
149
150 #define SOCKADDR union { \
151 struct sockaddr_in him4; \
152 struct sockaddr_in6 him6; \
153 }
154
155 #define SOCKADDR_LEN (ipv6_available() ? sizeof(SOCKADDR) : \
156 sizeof(struct sockaddr_in))
157
158 #else
159
160 #define SOCKADDR union { struct sockaddr_in him4; }
161 #define SOCKADDR_LEN sizeof(SOCKADDR)
162
163 #endif
164
165 /************************************************************************
166 * Utilities
167 */
168 #ifdef __linux__
169 extern int kernelIsV24();
170 #endif
171
172 void NET_ThrowByNameWithLastError(JNIEnv *env, const char *name,
173 const char *defaultDetail);
174
175
176 #endif /* NET_UTILS_MD_H */