jdk/src/solaris/native/java/net/ExtendedOptionsImpl.c - edge/openjdk - Git at Google

 /*
  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 #include <jni.h>
 #include <string.h>

 #include "net_util.h"
 #include "jdk_net_SocketFlow.h"

 static jclass sf_status_class;          /* Status enum type */

 static jfieldID sf_status;
 static jfieldID sf_priority;
 static jfieldID sf_bandwidth;

 static jfieldID sf_fd_fdID;             /* FileDescriptor.fd */

 /* References to the literal enum values */

 static jobject sfs_NOSTATUS;
 static jobject sfs_OK;
 static jobject sfs_NOPERMISSION;
 static jobject sfs_NOTCONNECTED;
 static jobject sfs_NOTSUPPORTED;
 static jobject sfs_ALREADYCREATED;
 static jobject sfs_INPROGRESS;
 static jobject sfs_OTHER;

 static jobject getEnumField(JNIEnv *env, char *name);
 static void setStatus(JNIEnv *env, jobject obj, int errval);

 /* OS specific code is implemented in these three functions */

 static jboolean flowSupported0() ;

 /*
  * Class:     sun_net_ExtendedOptionsImpl
  * Method:    init
  * Signature: ()V
  */
 JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_init
   (JNIEnv *env, jclass UNUSED) {

     static int initialized = 0;
     jclass c;

     /* Global class references */

     if (initialized) {
         return;
     }

     c = (*env)->FindClass(env, "jdk/net/SocketFlow$Status");
     CHECK_NULL(c);
     sf_status_class = (*env)->NewGlobalRef(env, c);
     CHECK_NULL(sf_status_class);

     /* int "fd" field of java.io.FileDescriptor  */

     c = (*env)->FindClass(env, "java/io/FileDescriptor");
     CHECK_NULL(c);
     sf_fd_fdID = (*env)->GetFieldID(env, c, "fd", "I");
     CHECK_NULL(sf_fd_fdID);


     /* SocketFlow fields */

     c = (*env)->FindClass(env, "jdk/net/SocketFlow");

     /* status */

     sf_status = (*env)->GetFieldID(env, c, "status",
         "Ljdk/net/SocketFlow$Status;");
     CHECK_NULL(sf_status);

     /* priority */

     sf_priority = (*env)->GetFieldID(env, c, "priority", "I");
     CHECK_NULL(sf_priority);

     /* bandwidth */

     sf_bandwidth = (*env)->GetFieldID(env, c, "bandwidth", "J");
     CHECK_NULL(sf_bandwidth);

     /* Initialize the static enum values */

     sfs_NOSTATUS = getEnumField(env, "NO_STATUS");
     CHECK_NULL(sfs_NOSTATUS);
     sfs_OK = getEnumField(env, "OK");
     CHECK_NULL(sfs_OK);
     sfs_NOPERMISSION = getEnumField(env, "NO_PERMISSION");
     CHECK_NULL(sfs_NOPERMISSION);
     sfs_NOTCONNECTED = getEnumField(env, "NOT_CONNECTED");
     CHECK_NULL(sfs_NOTCONNECTED);
     sfs_NOTSUPPORTED = getEnumField(env, "NOT_SUPPORTED");
     CHECK_NULL(sfs_NOTSUPPORTED);
     sfs_ALREADYCREATED = getEnumField(env, "ALREADY_CREATED");
     CHECK_NULL(sfs_ALREADYCREATED);
     sfs_INPROGRESS = getEnumField(env, "IN_PROGRESS");
     CHECK_NULL(sfs_INPROGRESS);
     sfs_OTHER = getEnumField(env, "OTHER");
     CHECK_NULL(sfs_OTHER);
     initialized = JNI_TRUE;
 }

 static jobject getEnumField(JNIEnv *env, char *name) {
     jobject f;
     jfieldID fID = (*env)->GetStaticFieldID(env, sf_status_class, name,
         "Ljdk/net/SocketFlow$Status;");
     CHECK_NULL_RETURN(fID, NULL);

     f = (*env)->GetStaticObjectField(env, sf_status_class, fID);
     CHECK_NULL_RETURN(f, NULL);
     f  = (*env)->NewGlobalRef(env, f);
     CHECK_NULL_RETURN(f, NULL);
     return f;
 }

 /*
  * Retrieve the int file-descriptor from a public socket type object.
  * Gets impl, then the FileDescriptor from the impl, and then the fd
  * from that.
  */
 static int getFD(JNIEnv *env, jobject fileDesc) {
     return (*env)->GetIntField(env, fileDesc, sf_fd_fdID);
 }

 /**
  * Sets the status field of a SocketFlow to one of the
  * canned enum values
  */
 static void setStatus (JNIEnv *env, jobject obj, int errval) {
     switch (errval) {
       case 0: /* OK */
         (*env)->SetObjectField(env, obj, sf_status, sfs_OK);
         break;
       case EPERM:
         (*env)->SetObjectField(env, obj, sf_status, sfs_NOPERMISSION);
         break;
       case ENOTCONN:
         (*env)->SetObjectField(env, obj, sf_status, sfs_NOTCONNECTED);
         break;
       case EOPNOTSUPP:
         (*env)->SetObjectField(env, obj, sf_status, sfs_NOTSUPPORTED);
         break;
       case EALREADY:
         (*env)->SetObjectField(env, obj, sf_status, sfs_ALREADYCREATED);
         break;
       case EINPROGRESS:
         (*env)->SetObjectField(env, obj, sf_status, sfs_INPROGRESS);
         break;
       default:
         (*env)->SetObjectField(env, obj, sf_status, sfs_OTHER);
         break;
     }
 }

 #ifdef __solaris__

 /*
  * Class:     sun_net_ExtendedOptionsImpl
  * Method:    setFlowOption
  * Signature: (Ljava/io/FileDescriptor;Ljdk/net/SocketFlow;)V
  */
 JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_setFlowOption
   (JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) {
     int fd = getFD(env, fileDesc);

     if (fd < 0) {
         NET_ERROR(env, JNU_JAVANETPKG "SocketException", "socket closed");
         return;
     } else {
         sock_flow_props_t props;
         jlong bandwidth;
         int rv;

         jint priority = (*env)->GetIntField(env, flow, sf_priority);
         memset(&props, 0, sizeof(props));
         props.sfp_version = SOCK_FLOW_PROP_VERSION1;

         if (priority != jdk_net_SocketFlow_UNSET) {
             props.sfp_mask |= SFP_PRIORITY;
             props.sfp_priority = priority;
         }
         bandwidth = (*env)->GetLongField(env, flow, sf_bandwidth);
         if (bandwidth > -1)  {
             props.sfp_mask |= SFP_MAXBW;
             props.sfp_maxbw = (uint64_t) bandwidth;
         }
         rv = setsockopt(fd, SOL_SOCKET, SO_FLOW_SLA, &props, sizeof(props));
         if (rv < 0) {
             if (errno == ENOPROTOOPT) {
                 JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
                         "unsupported socket option");
             } else if (errno == EACCES || errno == EPERM) {
                 NET_ERROR(env, JNU_JAVANETPKG "SocketException",
                                 "Permission denied");
             } else {
                 NET_ERROR(env, JNU_JAVANETPKG "SocketException",
                                 "set option SO_FLOW_SLA failed");
             }
             return;
         }
         setStatus(env, flow, props.sfp_status);
     }
 }

 /*
  * Class:     sun_net_ExtendedOptionsImpl
  * Method:    getFlowOption
  * Signature: (Ljava/io/FileDescriptor;Ljdk/net/SocketFlow;)V
  */
 JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_getFlowOption
   (JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) {
     int fd = getFD(env, fileDesc);

     if (fd < 0) {
         NET_ERROR(env, JNU_JAVANETPKG "SocketException", "socket closed");
         return;
     } else {
         sock_flow_props_t props;
         int status;
         socklen_t sz = sizeof(props);

         int rv = getsockopt(fd, SOL_SOCKET, SO_FLOW_SLA, &props, &sz);
         if (rv < 0) {
             if (errno == ENOPROTOOPT) {
                 JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
                         "unsupported socket option");
             } else if (errno == EACCES || errno == EPERM) {
                 NET_ERROR(env, JNU_JAVANETPKG "SocketException",
                                 "Permission denied");
             } else {
                 NET_ERROR(env, JNU_JAVANETPKG "SocketException",
                                 "set option SO_FLOW_SLA failed");
             }
             return;
         }
         /* first check status to see if flow exists */
         status = props.sfp_status;
         setStatus(env, flow, status);
         if (status == 0) { /* OK */
             /* can set the other fields now */
             if (props.sfp_mask & SFP_PRIORITY) {
                 (*env)->SetIntField(env, flow, sf_priority, props.sfp_priority);
             }
             if (props.sfp_mask & SFP_MAXBW) {
                 (*env)->SetLongField(env, flow, sf_bandwidth,
                                         (jlong)props.sfp_maxbw);
             }
         }
     }
 }

 static jboolean flowsupported;
 static jboolean flowsupported_set = JNI_FALSE;

 static jboolean flowSupported0() {
     /* Do a simple dummy call, and try to figure out from that */
     sock_flow_props_t props;
     int rv, s;
     if (flowsupported_set) {
         return flowsupported;
     }
     s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
     if (s < 0) {
         flowsupported = JNI_FALSE;
         flowsupported_set = JNI_TRUE;
         return JNI_FALSE;
     }
     memset(&props, 0, sizeof(props));
     props.sfp_version = SOCK_FLOW_PROP_VERSION1;
     props.sfp_mask |= SFP_PRIORITY;
     props.sfp_priority = SFP_PRIO_NORMAL;
     rv = setsockopt(s, SOL_SOCKET, SO_FLOW_SLA, &props, sizeof(props));
     if (rv != 0 && errno == ENOPROTOOPT) {
         rv = JNI_FALSE;
     } else {
         rv = JNI_TRUE;
     }
     close(s);
     flowsupported = rv;
     flowsupported_set = JNI_TRUE;
     return flowsupported;
 }

 #else /* __solaris__ */

 /* Non Solaris. Functionality is not supported. So, throw UnsupportedOpExc */

 JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_setFlowOption
   (JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) {
     JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
         "unsupported socket option");
 }

 JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_getFlowOption
   (JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) {
     JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
         "unsupported socket option");
 }

 static jboolean flowSupported0() {
     return JNI_FALSE;
 }

 #endif /* __solaris__ */

 JNIEXPORT jboolean JNICALL Java_sun_net_ExtendedOptionsImpl_flowSupported
   (JNIEnv *env, jclass UNUSED) {
     return flowSupported0();
 }
	/*
	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	#include <jni.h>
	#include <string.h>

	#include "net_util.h"
	#include "jdk_net_SocketFlow.h"

	static jclass sf_status_class; /* Status enum type */

	static jfieldID sf_status;
	static jfieldID sf_priority;
	static jfieldID sf_bandwidth;

	static jfieldID sf_fd_fdID; /* FileDescriptor.fd */

	/* References to the literal enum values */

	static jobject sfs_NOSTATUS;
	static jobject sfs_OK;
	static jobject sfs_NOPERMISSION;
	static jobject sfs_NOTCONNECTED;
	static jobject sfs_NOTSUPPORTED;
	static jobject sfs_ALREADYCREATED;
	static jobject sfs_INPROGRESS;
	static jobject sfs_OTHER;

	static jobject getEnumField(JNIEnv env, char name);
	static void setStatus(JNIEnv *env, jobject obj, int errval);

	/* OS specific code is implemented in these three functions */

	static jboolean flowSupported0() ;

	/*
	* Class: sun_net_ExtendedOptionsImpl
	* Method: init
	* Signature: ()V
	*/
	JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_init
	(JNIEnv *env, jclass UNUSED) {

	static int initialized = 0;
	jclass c;

	/* Global class references */

	if (initialized) {
	return;
	}

	c = (*env)->FindClass(env, "jdk/net/SocketFlow$Status");
	CHECK_NULL(c);
	sf_status_class = (*env)->NewGlobalRef(env, c);
	CHECK_NULL(sf_status_class);

	/* int "fd" field of java.io.FileDescriptor */

	c = (*env)->FindClass(env, "java/io/FileDescriptor");
	CHECK_NULL(c);
	sf_fd_fdID = (*env)->GetFieldID(env, c, "fd", "I");
	CHECK_NULL(sf_fd_fdID);


	/* SocketFlow fields */

	c = (*env)->FindClass(env, "jdk/net/SocketFlow");

	/* status */

	sf_status = (*env)->GetFieldID(env, c, "status",
	"Ljdk/net/SocketFlow$Status;");
	CHECK_NULL(sf_status);

	/* priority */

	sf_priority = (*env)->GetFieldID(env, c, "priority", "I");
	CHECK_NULL(sf_priority);

	/* bandwidth */

	sf_bandwidth = (*env)->GetFieldID(env, c, "bandwidth", "J");
	CHECK_NULL(sf_bandwidth);

	/* Initialize the static enum values */

	sfs_NOSTATUS = getEnumField(env, "NO_STATUS");
	CHECK_NULL(sfs_NOSTATUS);
	sfs_OK = getEnumField(env, "OK");
	CHECK_NULL(sfs_OK);
	sfs_NOPERMISSION = getEnumField(env, "NO_PERMISSION");
	CHECK_NULL(sfs_NOPERMISSION);
	sfs_NOTCONNECTED = getEnumField(env, "NOT_CONNECTED");
	CHECK_NULL(sfs_NOTCONNECTED);
	sfs_NOTSUPPORTED = getEnumField(env, "NOT_SUPPORTED");
	CHECK_NULL(sfs_NOTSUPPORTED);
	sfs_ALREADYCREATED = getEnumField(env, "ALREADY_CREATED");
	CHECK_NULL(sfs_ALREADYCREATED);
	sfs_INPROGRESS = getEnumField(env, "IN_PROGRESS");
	CHECK_NULL(sfs_INPROGRESS);
	sfs_OTHER = getEnumField(env, "OTHER");
	CHECK_NULL(sfs_OTHER);
	initialized = JNI_TRUE;
	}

	static jobject getEnumField(JNIEnv env, char name) {
	jobject f;
	jfieldID fID = (*env)->GetStaticFieldID(env, sf_status_class, name,
	"Ljdk/net/SocketFlow$Status;");
	CHECK_NULL_RETURN(fID, NULL);

	f = (*env)->GetStaticObjectField(env, sf_status_class, fID);
	CHECK_NULL_RETURN(f, NULL);
	f = (*env)->NewGlobalRef(env, f);
	CHECK_NULL_RETURN(f, NULL);
	return f;
	}

	/*
	* Retrieve the int file-descriptor from a public socket type object.
	* Gets impl, then the FileDescriptor from the impl, and then the fd
	* from that.
	*/
	static int getFD(JNIEnv *env, jobject fileDesc) {
	return (*env)->GetIntField(env, fileDesc, sf_fd_fdID);
	}

	/**
	* Sets the status field of a SocketFlow to one of the
	* canned enum values
	*/
	static void setStatus (JNIEnv *env, jobject obj, int errval) {
	switch (errval) {
	case 0: /* OK */
	(*env)->SetObjectField(env, obj, sf_status, sfs_OK);
	break;
	case EPERM:
	(*env)->SetObjectField(env, obj, sf_status, sfs_NOPERMISSION);
	break;
	case ENOTCONN:
	(*env)->SetObjectField(env, obj, sf_status, sfs_NOTCONNECTED);
	break;
	case EOPNOTSUPP:
	(*env)->SetObjectField(env, obj, sf_status, sfs_NOTSUPPORTED);
	break;
	case EALREADY:
	(*env)->SetObjectField(env, obj, sf_status, sfs_ALREADYCREATED);
	break;
	case EINPROGRESS:
	(*env)->SetObjectField(env, obj, sf_status, sfs_INPROGRESS);
	break;
	default:
	(*env)->SetObjectField(env, obj, sf_status, sfs_OTHER);
	break;
	}
	}

	#ifdef __solaris__

	/*
	* Class: sun_net_ExtendedOptionsImpl
	* Method: setFlowOption
	* Signature: (Ljava/io/FileDescriptor;Ljdk/net/SocketFlow;)V
	*/
	JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_setFlowOption
	(JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) {
	int fd = getFD(env, fileDesc);

	if (fd < 0) {
	NET_ERROR(env, JNU_JAVANETPKG "SocketException", "socket closed");
	return;
	} else {
	sock_flow_props_t props;
	jlong bandwidth;
	int rv;

	jint priority = (*env)->GetIntField(env, flow, sf_priority);
	memset(&props, 0, sizeof(props));
	props.sfp_version = SOCK_FLOW_PROP_VERSION1;

	if (priority != jdk_net_SocketFlow_UNSET) {
	props.sfp_mask \|= SFP_PRIORITY;
	props.sfp_priority = priority;
	}
	bandwidth = (*env)->GetLongField(env, flow, sf_bandwidth);
	if (bandwidth > -1) {
	props.sfp_mask \|= SFP_MAXBW;
	props.sfp_maxbw = (uint64_t) bandwidth;
	}
	rv = setsockopt(fd, SOL_SOCKET, SO_FLOW_SLA, &props, sizeof(props));
	if (rv < 0) {
	if (errno == ENOPROTOOPT) {
	JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
	"unsupported socket option");
	} else if (errno == EACCES \|\| errno == EPERM) {
	NET_ERROR(env, JNU_JAVANETPKG "SocketException",
	"Permission denied");
	} else {
	NET_ERROR(env, JNU_JAVANETPKG "SocketException",
	"set option SO_FLOW_SLA failed");
	}
	return;
	}
	setStatus(env, flow, props.sfp_status);
	}
	}

	/*
	* Class: sun_net_ExtendedOptionsImpl
	* Method: getFlowOption
	* Signature: (Ljava/io/FileDescriptor;Ljdk/net/SocketFlow;)V
	*/
	JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_getFlowOption
	(JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) {
	int fd = getFD(env, fileDesc);

	if (fd < 0) {
	NET_ERROR(env, JNU_JAVANETPKG "SocketException", "socket closed");
	return;
	} else {
	sock_flow_props_t props;
	int status;
	socklen_t sz = sizeof(props);

	int rv = getsockopt(fd, SOL_SOCKET, SO_FLOW_SLA, &props, &sz);
	if (rv < 0) {
	if (errno == ENOPROTOOPT) {
	JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
	"unsupported socket option");
	} else if (errno == EACCES \|\| errno == EPERM) {
	NET_ERROR(env, JNU_JAVANETPKG "SocketException",
	"Permission denied");
	} else {
	NET_ERROR(env, JNU_JAVANETPKG "SocketException",
	"set option SO_FLOW_SLA failed");
	}
	return;
	}
	/* first check status to see if flow exists */
	status = props.sfp_status;
	setStatus(env, flow, status);
	if (status == 0) { /* OK */
	/* can set the other fields now */
	if (props.sfp_mask & SFP_PRIORITY) {
	(*env)->SetIntField(env, flow, sf_priority, props.sfp_priority);
	}
	if (props.sfp_mask & SFP_MAXBW) {
	(*env)->SetLongField(env, flow, sf_bandwidth,
	(jlong)props.sfp_maxbw);
	}
	}
	}
	}

	static jboolean flowsupported;
	static jboolean flowsupported_set = JNI_FALSE;

	static jboolean flowSupported0() {
	/* Do a simple dummy call, and try to figure out from that */
	sock_flow_props_t props;
	int rv, s;
	if (flowsupported_set) {
	return flowsupported;
	}
	s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
	if (s < 0) {
	flowsupported = JNI_FALSE;
	flowsupported_set = JNI_TRUE;
	return JNI_FALSE;
	}
	memset(&props, 0, sizeof(props));
	props.sfp_version = SOCK_FLOW_PROP_VERSION1;
	props.sfp_mask \|= SFP_PRIORITY;
	props.sfp_priority = SFP_PRIO_NORMAL;
	rv = setsockopt(s, SOL_SOCKET, SO_FLOW_SLA, &props, sizeof(props));
	if (rv != 0 && errno == ENOPROTOOPT) {
	rv = JNI_FALSE;
	} else {
	rv = JNI_TRUE;
	}
	close(s);
	flowsupported = rv;
	flowsupported_set = JNI_TRUE;
	return flowsupported;
	}

	#else /* __solaris__ */

	/* Non Solaris. Functionality is not supported. So, throw UnsupportedOpExc */

	JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_setFlowOption
	(JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) {
	JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
	"unsupported socket option");
	}

	JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_getFlowOption
	(JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) {
	JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
	"unsupported socket option");
	}

	static jboolean flowSupported0() {
	return JNI_FALSE;
	}

	#endif /* __solaris__ */

	JNIEXPORT jboolean JNICALL Java_sun_net_ExtendedOptionsImpl_flowSupported
	(JNIEnv *env, jclass UNUSED) {
	return flowSupported0();
	}