1 /*
   2  * Copyright (c) 1997, 2019, 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 <netdb.h>
  30 #include <poll.h>
  31 #include <sys/socket.h>
  32 
  33 /************************************************************************
  34  * Macros and constants
  35  */
  36 
  37 #define NET_NSEC_PER_MSEC 1000000
  38 #define NET_NSEC_PER_SEC  1000000000
  39 #define NET_NSEC_PER_USEC 1000
  40 
  41 /* in case NI_MAXHOST is not defined in netdb.h */
  42 #ifndef NI_MAXHOST
  43 #define NI_MAXHOST 1025
  44 #endif
  45 
  46 /* Defines SO_REUSEPORT */
  47 #ifndef SO_REUSEPORT
  48 #ifdef __linux__
  49 #define SO_REUSEPORT 15
  50 #elif defined(__solaris__)
  51 #define SO_REUSEPORT 0x100e
  52 #elif defined(AIX) || defined(MACOSX)
  53 #define SO_REUSEPORT 0x0200
  54 #else
  55 #define SO_REUSEPORT 0
  56 #endif
  57 #endif
  58 
  59 /*
  60  * On 64-bit JDKs we use a much larger stack and heap buffer.
  61  */
  62 #ifdef _LP64
  63 #define MAX_BUFFER_LEN 65536
  64 #define MAX_HEAP_BUFFER_LEN 131072
  65 #else
  66 #define MAX_BUFFER_LEN 8192
  67 #define MAX_HEAP_BUFFER_LEN 65536
  68 #endif
  69 
  70 typedef union {
  71     struct sockaddr     sa;
  72     struct sockaddr_in  sa4;
  73     struct sockaddr_in6 sa6;
  74 } SOCKETADDRESS;
  75 
  76 /************************************************************************
  77  * Functions
  78  */
  79 
  80 int NET_Timeout(JNIEnv *env, int s, long timeout, jlong  nanoTimeStamp);
  81 int NET_Read(int s, void* buf, size_t len);
  82 int NET_NonBlockingRead(int s, void* buf, size_t len);
  83 int NET_RecvFrom(int s, void *buf, int len, unsigned int flags,
  84                  struct sockaddr *from, socklen_t *fromlen);
  85 int NET_ReadV(int s, const struct iovec * vector, int count);
  86 int NET_Send(int s, void *msg, int len, unsigned int flags);
  87 int NET_SendTo(int s, const void *msg, int len,  unsigned  int
  88                flags, const struct sockaddr *to, int tolen);
  89 int NET_Connect(int s, struct sockaddr *addr, int addrlen);
  90 int NET_Accept(int s, struct sockaddr *addr, socklen_t *addrlen);
  91 int NET_SocketClose(int s);
  92 int NET_Dup2(int oldfd, int newfd);
  93 int NET_Poll(struct pollfd *ufds, unsigned int nfds, int timeout);
  94 
  95 void NET_ThrowUnknownHostExceptionWithGaiError(JNIEnv *env,
  96                                                const char* hostname,
  97                                                int gai_error);
  98 void NET_ThrowByNameWithLastError(JNIEnv *env, const char *name,
  99                                   const char *defaultDetail);
 100 void NET_SetTrafficClass(SOCKETADDRESS *sa, int trafficClass);
 101 
 102 #ifdef __linux__
 103 int kernelIsV24();
 104 int getDefaultIPv6Interface(struct in6_addr *target_addr);
 105 #endif
 106 
 107 #ifdef __solaris__
 108 int net_getParam(char *driver, char *param);
 109 #endif
 110 
 111 #endif /* NET_UTILS_MD_H */