--- a/src/java.base/solaris/classes/sun/nio/ch/FileDispatcherImpl.java	Mon Oct 10 20:08:47 2022
+++ b/src/java.base/solaris/classes/sun/nio/ch/FileDispatcherImpl.java	Mon Oct 10 19:39:09 2022
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2000, 2022, 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.
+ */
+
+package sun.nio.ch;
+
+import java.io.FileDescriptor;
+
+class FileDispatcherImpl extends UnixFileDispatcherImpl {
+    FileDispatcherImpl() {
+        super();
+    }
+
+    long transferTo(FileDescriptor src, long position, long count,
+                    FileDescriptor dst, boolean append) {
+        return transferTo0(src, position, count, dst, append);
+    }
+
+    // -- Native methods --
+
+    static native long transferTo0(FileDescriptor src, long position,
+                                   long count, FileDescriptor dst,
+                                   boolean append);
+}
--- a/src/java.base/solaris/native/libnio/ch/FileDispatcherImpl.c	Mon Oct 10 20:09:47 2022
+++ b/src/java.base/solaris/native/libnio/ch/FileDispatcherImpl.c	Mon Oct 10 19:39:25 2022
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2000, 2022, 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 <sys/sendfile.h>
+#include <dlfcn.h>
+
+#include "jni.h"
+#include "nio.h"
+#include "nio_util.h"
+#include "sun_nio_ch_FileDispatcherImpl.h"
+
+JNIEXPORT jlong JNICALL
+Java_sun_nio_ch_FileDispatcherImpl_transferTo0(JNIEnv *env, jobject this,
+                                            jobject srcFDO,
+                                            jlong position, jlong count,
+                                            jobject dstFDO, jboolean append)
+{
+    jint srcFD = fdval(env, srcFDO);
+    jint dstFD = fdval(env, dstFDO);
+
+    sendfilevec64_t sfv;
+    size_t numBytes = 0;
+    jlong result;
+
+    sfv.sfv_fd = srcFD;
+    sfv.sfv_flag = 0;
+    sfv.sfv_off = (off64_t)position;
+    sfv.sfv_len = count;
+
+    result = sendfilev64(dstFD, &sfv, 1, &numBytes);
+
+    /* Solaris sendfilev() will return -1 even if some bytes have been
+     * transferred, so we check numBytes first.
+     */
+    if (numBytes > 0)
+        return numBytes;
+    if (result < 0) {
+        if (errno == EAGAIN)
+            return IOS_UNAVAILABLE;
+        if (errno == EOPNOTSUPP)
+            return IOS_UNSUPPORTED_CASE;
+        if ((errno == EINVAL) && ((ssize_t)count >= 0))
+            return IOS_UNSUPPORTED_CASE;
+        if (errno == EINTR)
+            return IOS_INTERRUPTED;
+        JNU_ThrowIOExceptionWithLastError(env, "Transfer failed");
+        return IOS_THROWN;
+    }
+    return result;
+}