76 void setDefaultScopeID(JNIEnv *env, struct sockaddr *him)

    77 {

    78 #ifdef MACOSX

    79     static jclass ni_class = NULL;

    80     static jfieldID ni_defaultIndexID;

    81     if (ni_class == NULL) {

    82         jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");

    83         CHECK_NULL(c);

    84         c = (*env)->NewGlobalRef(env, c);

    85         CHECK_NULL(c);

    86         ni_defaultIndexID = (*env)->GetStaticFieldID(env, c, "defaultIndex", "I");

    87         CHECK_NULL(ni_defaultIndexID);

    88         ni_class = c;

    89     }

    90     int defaultIndex;

    91     struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)him;

    92     if (sin6->sin6_family == AF_INET6 && (sin6->sin6_scope_id == 0) &&

    93         (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) ||

    94          IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))) {

    95         defaultIndex = (*env)->GetStaticIntField(env, ni_class,

    96                                                  ni_defaultIndexID);

    97         sin6->sin6_scope_id = defaultIndex;

    98     }

    99 #endif

   100 }

   101 

   102 int getDefaultScopeID(JNIEnv *env) {

   103     int defaultIndex = 0;

   104     static jclass ni_class = NULL;

   105     static jfieldID ni_defaultIndexID;

   106     if (ni_class == NULL) {

   107         jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");

   108         CHECK_NULL_RETURN(c, 0);

   109         c = (*env)->NewGlobalRef(env, c);

   110         CHECK_NULL_RETURN(c, 0);

   111         ni_defaultIndexID = (*env)->GetStaticFieldID(env, c, "defaultIndex", "I");

   112         CHECK_NULL_RETURN(ni_defaultIndexID, 0);

   113         ni_class = c;

   114     }

   115     defaultIndex = (*env)->GetStaticIntField(env, ni_class,

   116                                              ni_defaultIndexID);

   117     return defaultIndex;

   118 }

   119 

   217 }

   218 #endif

   219 

   220 #ifdef __linux__

   221 static int vinit = 0;

   222 static int kernelV24 = 0;

   223 static int vinit24 = 0;

   224 

   225 int kernelIsV24 () {

   226     if (!vinit24) {

   227         struct utsname sysinfo;

   228         if (uname(&sysinfo) == 0) {

   229             sysinfo.release[3] = '\0';

   230             if (strcmp(sysinfo.release, "2.4") == 0) {

   231                 kernelV24 = JNI_TRUE;

   232             }

   233         }

   234         vinit24 = 1;

   235     }

   236     return kernelV24;