6972374: NetworkInterface.getNetworkInterfaces throws "java.net.SocketException" on Solaris zone

Reviewed-by: alanb, dsamersoff

src/solaris/native/java/net/NetworkInterface.c

@@ -131,7 +131,7 @@ static struct  sockaddr *getBroadcast(JNIEnv *env, int sock, const char *name, s
 static short   getSubnet(JNIEnv *env, int sock, const char *ifname);
 static int     getIndex(int sock, const char *ifname);
 
-static int     getFlags(JNIEnv *env, int sock, const char *ifname);
+static int     getFlags(int sock, const char *ifname);
 static int     getMacAddress(JNIEnv *env, int sock,  const char* ifname, const struct in_addr* addr, unsigned char *buf);
 static int     getMTU(JNIEnv *env, int sock, const char *ifname);
 
@@ -550,7 +550,7 @@ static int getFlags0(JNIEnv *env, jstring name) {
 
     name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
 
-    ret = getFlags(env, sock, name_utf);
+    ret = getFlags(sock, name_utf);
 
     close(sock);
     (*env)->ReleaseStringUTFChars(env, name, name_utf);
@@ -885,7 +885,7 @@ netif *addif(JNIEnv *env, int sock, const char * if_name, netif *ifs, struct soc
        * the 'parent' interface with the new records.
        */
         *name_colonP = 0;
-        if (getFlags(env,sock,name) < 0) {
+        if (getFlags(sock, name) < 0) {
             // failed to access parent interface do not create parent.
             // We are a virtual interface with no parent.
             isVirtual = 1;
@@ -1257,7 +1257,7 @@ static int getMTU(JNIEnv *env, int sock,  const char *ifname) {
     return  if2.ifr_mtu;
 }
 
-static int getFlags(JNIEnv *env, int sock, const char *ifname) {
+static int getFlags(int sock, const char *ifname) {
   struct ifreq if2;
   int ret = -1;
 
@@ -1633,13 +1633,12 @@ static int getMTU(JNIEnv *env, int sock,  const char *ifname) {
 }
 
 
-static int getFlags(JNIEnv *env, int sock, const char *ifname) {
+static int getFlags(int sock, const char *ifname) {
      struct   lifreq lifr;
      memset((caddr_t)&lifr, 0, sizeof(lifr));
      strcpy((caddr_t)&(lifr.lifr_name), ifname);
 
      if (ioctl(sock, SIOCGLIFFLAGS, (char *)&lifr) < 0) {
-         NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGLIFFLAGS failed");
          return -1;
      }