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(__linux__) || defined(MACOSX) || defined (_AIX)
51 extern int NET_Timeout(int s, long timeout);
52 extern int NET_Read(int s, void* buf, size_t len);
53 extern int NET_RecvFrom(int s, void *buf, int len, unsigned int flags,
54 struct sockaddr *from, int *fromlen);
55 extern int NET_ReadV(int s, const struct iovec * vector, int count);
56 extern int NET_Send(int s, void *msg, int len, unsigned int flags);
57 extern int NET_SendTo(int s, const void *msg, int len, unsigned int
58 flags, const struct sockaddr *to, int tolen);
59 extern int NET_Writev(int s, const struct iovec * vector, int count);
60 extern int NET_Connect(int s, struct sockaddr *addr, int addrlen);
61 extern int NET_Accept(int s, struct sockaddr *addr, int *addrlen);
62 extern int NET_SocketClose(int s);
63 extern int NET_Dup2(int oldfd, int newfd);
64
65 #ifdef USE_SELECT
66 extern int NET_Select(int s, fd_set *readfds, fd_set *writefds,
67 fd_set *exceptfds, struct timeval *timeout);
68 #else
69 extern int NET_Poll(struct pollfd *ufds, unsigned int nfds, int timeout);
70 #endif
71
72 #else
73
74 #define NET_Timeout JVM_Timeout
75 #define NET_Read JVM_Read
76 #define NET_RecvFrom JVM_RecvFrom
77 #define NET_ReadV readv
78 #define NET_Send JVM_Send
79 #define NET_SendTo JVM_SendTo
80 #define NET_WriteV writev
81 #define NET_Connect JVM_Connect
82 #define NET_Accept JVM_Accept
83 #define NET_SocketClose JVM_SocketClose
84 #define NET_Dup2 dup2
85 #define NET_Select select
86 #define NET_Poll poll
87
88 #endif
89
90 #if defined(__linux__) && defined(AF_INET6)
91 int getDefaultIPv6Interface(struct in6_addr *target_addr);
92 #endif
93
94 #ifdef __solaris__
95 extern int net_getParam(char *driver, char *param);
96
97 #ifndef SO_FLOW_SLA
98 #define SO_FLOW_SLA 0x1018
99
100 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
101 #pragma pack(4)
102 #endif
103
104 /*
105 * Used with the setsockopt(SO_FLOW_SLA, ...) call to set
106 * per socket service level properties.
107 * When the application uses per-socket API, we will enforce the properties
108 * on both outbound and inbound packets.
109 *
110 * For now, only priority and maxbw are supported in SOCK_FLOW_PROP_VERSION1.
111 */
112 typedef struct sock_flow_props_s {
113 int sfp_version;
114 uint32_t sfp_mask;
115 int sfp_priority; /* flow priority */
116 uint64_t sfp_maxbw; /* bandwidth limit in bps */
117 int sfp_status; /* flow create status for getsockopt */
118 } sock_flow_props_t;
119
120 #define SOCK_FLOW_PROP_VERSION1 1
121
122 /* bit mask values for sfp_mask */
123 #define SFP_MAXBW 0x00000001 /* Flow Bandwidth Limit */
124 #define SFP_PRIORITY 0x00000008 /* Flow priority */
125
126 /* possible values for sfp_priority */
127 #define SFP_PRIO_NORMAL 1
128 #define SFP_PRIO_HIGH 2
129
130 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
131 #pragma pack()
132 #endif /* _LONG_LONG_ALIGNMENT */
133
134 #endif /* SO_FLOW_SLA */
135 #endif /* __solaris__ */
136
137 void ThrowUnknownHostExceptionWithGaiError(JNIEnv *env,
138 const char* hostname,
139 int gai_error);
140
141 #define NET_WAIT_READ 0x01
142 #define NET_WAIT_WRITE 0x02
143 #define NET_WAIT_CONNECT 0x04
144
145 extern jint NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout);
146
147 /************************************************************************
148 * Macros and constants
149 */
150
151 /*
152 * On 64-bit JDKs we use a much larger stack and heap buffer.
153 */
154 #ifdef _LP64
155 #define MAX_BUFFER_LEN 65536
156 #define MAX_HEAP_BUFFER_LEN 131072
157 #else
158 #define MAX_BUFFER_LEN 8192
159 #define MAX_HEAP_BUFFER_LEN 65536
160 #endif
161
162 #ifdef AF_INET6
163
164 #define SOCKADDR union { \
165 struct sockaddr_in him4; \
166 struct sockaddr_in6 him6; \
167 }
168
169 #define SOCKADDR_LEN (ipv6_available() ? sizeof(SOCKADDR) : \
170 sizeof(struct sockaddr_in))
171
172 #else
173
174 #define SOCKADDR union { struct sockaddr_in him4; }
175 #define SOCKADDR_LEN sizeof(SOCKADDR)
176
177 #endif
178
179 /************************************************************************
180 * Utilities
181 */
182 #ifdef __linux__
183 extern int kernelIsV24();
184 #endif
185
186 void NET_ThrowByNameWithLastError(JNIEnv *env, const char *name,
187 const char *defaultDetail);
188
189
190 #endif /* NET_UTILS_MD_H */