diff --git a/core/src/main/java/jenkins/slaves/restarter/UnixSlaveRestarter.java b/core/src/main/java/jenkins/slaves/restarter/UnixSlaveRestarter.java
index 8b7aeeefbd..4fcf557798 100644
--- a/core/src/main/java/jenkins/slaves/restarter/UnixSlaveRestarter.java
+++ b/core/src/main/java/jenkins/slaves/restarter/UnixSlaveRestarter.java
@@ -6,14 +6,13 @@ import static hudson.util.jna.GNUCLibrary.F_SETFD;
 import static hudson.util.jna.GNUCLibrary.LIBC;
 import static java.util.logging.Level.FINE;
 
-import com.sun.jna.Memory;
 import com.sun.jna.Native;
-import com.sun.jna.NativeLong;
 import com.sun.jna.StringArray;
 import hudson.Extension;
 import java.io.File;
 import java.io.IOException;
-import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.InvalidPathException;
 import java.util.List;
 import java.util.logging.Logger;
 import jenkins.util.JavaVMArguments;
@@ -73,11 +72,8 @@ public class UnixSlaveRestarter extends SlaveRestarter {
         File exe = new File(name);
         if (exe.exists()) {
             try {
-                String path = resolveSymlink(exe);
-                if (path != null) {
-                    return path;
-                }
-            } catch (IOException e) {
+                return Files.readSymbolicLink(exe.toPath()).toString();
+            } catch (IOException | InvalidPathException | UnsupportedOperationException e) {
                 LOGGER.log(FINE, "Failed to resolve symlink " + exe, e);
             }
             return name;
@@ -87,33 +83,6 @@ public class UnixSlaveRestarter extends SlaveRestarter {
         return System.getProperty("java.home") + "/bin/java";
     }
 
-    private static String resolveSymlink(File link) throws IOException {
-        String filename = link.getAbsolutePath();
-
-        for (int sz = 512; sz < 65536; sz *= 2) {
-            Memory m = new Memory(sz);
-            int r = LIBC.readlink(filename, m, new NativeLong(sz));
-            if (r < 0) {
-                int err = Native.getLastError();
-                if (err == 22 /*EINVAL --- but is this really portable?*/) {
-                    return null; // this means it's not a symlink
-                }
-                throw new IOException(
-                        "Failed to readlink " + link + " error=" + err + " " + LIBC.strerror(err));
-            }
-
-            if (r == sz) {
-                continue; // buffer too small
-            }
-
-            byte[] buf = new byte[r];
-            m.read(0, buf, 0, r);
-            return new String(buf, StandardCharsets.UTF_8);
-        }
-
-        throw new IOException("Failed to readlink " + link);
-    }
-
     private static final Logger LOGGER = Logger.getLogger(UnixSlaveRestarter.class.getName());
 
     private static final long serialVersionUID = 1L;