1 /*
   2  * Copyright (c) 1997, 2016, 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 #include <sys/poll.h>
  36 
  37 int NET_Timeout(int s, long timeout);
  38 int NET_Read(int s, void* buf, size_t len);
  39 int NET_NonBlockingRead(int s, void* buf, size_t len);
  40 int NET_RecvFrom(int s, void *buf, int len, unsigned int flags,
  41                  struct sockaddr *from, socklen_t *fromlen);
  42 int NET_ReadV(int s, const struct iovec * vector, int count);
  43 int NET_Send(int s, void *msg, int len, unsigned int flags);
  44 int NET_SendTo(int s, const void *msg, int len,  unsigned  int
  45                flags, const struct sockaddr *to, int tolen);
  46 int NET_Writev(int s, const struct iovec * vector, int count);
  47 int NET_Connect(int s, struct sockaddr *addr, int addrlen);
  48 int NET_Accept(int s, struct sockaddr *addr, socklen_t *addrlen);
  49 int NET_SocketClose(int s);
  50 int NET_Dup2(int oldfd, int newfd);
  51 int NET_Poll(struct pollfd *ufds, unsigned int nfds, int timeout);
  52 int NET_SocketAvailable(int s, jint *pbytes);
  53 
  54 void NET_ThrowUnknownHostExceptionWithGaiError(JNIEnv *env,
  55                                                const char* hostname,
  56                                                int gai_error);
  57 void NET_ThrowByNameWithLastError(JNIEnv *env, const char *name,
  58                                   const char *defaultDetail);
  59 
  60 #define NET_WAIT_READ    0x01
  61 #define NET_WAIT_WRITE   0x02
  62 #define NET_WAIT_CONNECT 0x04
  63 
  64 /* Defines SO_REUSEPORT */
  65 #ifndef SO_REUSEPORT
  66 #ifdef __linux__
  67 #define SO_REUSEPORT 15
  68 #elif __solaris__
  69 #define SO_REUSEPORT 0x100e
  70 #elif defined(AIX) || defined(MACOSX)
  71 #define SO_REUSEPORT 0x0200
  72 #else
  73 #define SO_REUSEPORT 0
  74 #endif
  75 #endif
  76 
  77 jint NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout);
  78 
  79 /************************************************************************
  80  * Macros and constants
  81  */
  82 
  83 /*
  84  * On 64-bit JDKs we use a much larger stack and heap buffer.
  85  */
  86 #ifdef _LP64
  87 #define MAX_BUFFER_LEN 65536
  88 #define MAX_HEAP_BUFFER_LEN 131072
  89 #else
  90 #define MAX_BUFFER_LEN 8192
  91 #define MAX_HEAP_BUFFER_LEN 65536
  92 #endif
  93 
  94 #ifdef AF_INET6
  95 
  96 #define SOCKADDR        union { \
  97                             struct sockaddr_in him4; \
  98                             struct sockaddr_in6 him6; \
  99                         }
 100 
 101 #define SOCKADDR_LEN    (ipv6_available() ? sizeof(SOCKADDR) : \
 102                          sizeof(struct sockaddr_in))
 103 
 104 #else
 105 
 106 #define SOCKADDR        union { struct sockaddr_in him4; }
 107 #define SOCKADDR_LEN    sizeof(SOCKADDR)
 108 
 109 #endif
 110 
 111 /************************************************************************
 112  *  Utilities
 113  */
 114 
 115 #ifdef __linux__
 116 int kernelIsV24();
 117 #ifdef AF_INET6
 118 int getDefaultIPv6Interface(struct in6_addr *target_addr);
 119 #endif
 120 #endif
 121 
 122 #ifdef __solaris__
 123 int net_getParam(char *driver, char *param);
 124 #endif
 125 
 126 #endif /* NET_UTILS_MD_H */