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 extern int tagSocket(JNIEnv* env, int fd); 63 extern void untagSocket(JNIEnv* env, int fd); 64 65 #else 66 67 #define NET_Timeout JVM_Timeout 68 #define NET_Read JVM_Read 69 #define NET_RecvFrom JVM_RecvFrom 70 #define NET_ReadV readv 71 #define NET_Send JVM_Send 72 #define NET_SendTo JVM_SendTo 73 #define NET_WriteV writev 74 #define NET_Connect JVM_Connect 75 #define NET_Accept JVM_Accept 76 #define NET_SocketClose JVM_SocketClose 77 #define NET_Dup2 dup2 78 #define NET_Select select 79 #define NET_Poll poll 80 81 #define tagSocket(env,fd) (void)0 82 #define untagSocket(env,fd) (void)0 83 84 #endif 85 86 87 /* needed from libsocket on Solaris 8 */ 88 89 typedef int (*getaddrinfo_f)(const char *nodename, const char *servname, 90 const struct addrinfo *hints, struct addrinfo **res); 91 92 typedef void (*freeaddrinfo_f)(struct addrinfo *); 93 94 typedef const char * (*gai_strerror_f)(int ecode); 95 96 typedef int (*getnameinfo_f)(const struct sockaddr *, size_t, 97 char *, size_t, char *, size_t, int); 98 99 extern getaddrinfo_f getaddrinfo_ptr; 100 extern freeaddrinfo_f freeaddrinfo_ptr; 101 extern getnameinfo_f getnameinfo_ptr; 102 103 void ThrowUnknownHostExceptionWithGaiError(JNIEnv *env, 104 const char* hostname, 105 int gai_error); 106 107 /* do we have address translation support */ 108 109 extern jboolean NET_addrtransAvailable(); 110 111 #define NET_WAIT_READ 0x01 112 #define NET_WAIT_WRITE 0x02 113 #define NET_WAIT_CONNECT 0x04 114 115 extern jint NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout); 116 117 /************************************************************************ 118 * Macros and constants 119 */ 120 121 /* 122 * On 64-bit JDKs we use a much larger stack and heap buffer. 123 */ 124 #ifdef _LP64 125 #define MAX_BUFFER_LEN 65536 126 #define MAX_HEAP_BUFFER_LEN 131072 127 #else 128 #define MAX_BUFFER_LEN 8192 129 #define MAX_HEAP_BUFFER_LEN 65536 130 #endif 131 132 #ifdef AF_INET6 133 134 #define SOCKADDR union { \ 135 struct sockaddr_in him4; \ 136 struct sockaddr_in6 him6; \ 137 } 138 139 #define SOCKADDR_LEN (ipv6_available() ? sizeof(SOCKADDR) : \ 140 sizeof(struct sockaddr_in)) 141 142 #else 143 144 #define SOCKADDR union { struct sockaddr_in him4; } 145 #define SOCKADDR_LEN sizeof(SOCKADDR) 146 147 #endif 148 149 /************************************************************************ 150 * Utilities 151 */ 152 #ifdef __linux__ 153 extern int kernelIsV22(); 154 extern int kernelIsV24(); 155 #endif 156 157 void NET_ThrowByNameWithLastError(JNIEnv *env, const char *name, 158 const char *defaultDetail); 159 160 161 #endif /* NET_UTILS_MD_H */ 162
