src/java.base/unix/classes/sun/nio/fs/UnixChannelFactory.java

*** 62,71 ****
--- 62,72 ----
          boolean create;
          boolean createNew;
          boolean deleteOnClose;
          boolean sync;
          boolean dsync;
+         boolean direct;
  
          static Flags toFlags(Set<? extends OpenOption> options) {
              Flags flags = new Flags();
              for (OpenOption option: options) {
                  if (option instanceof StandardOpenOption) {
*** 86,95 ****
--- 87,102 ----
                  }
                  if (option == LinkOption.NOFOLLOW_LINKS && O_NOFOLLOW != 0) {
                      flags.noFollowLinks = true;
                      continue;
                  }
+ 
+                 if (ExtendedOptions.DIRECT.matches(option)) {
+                     flags.direct = true;
+                     continue;
+                 }
+ 
                  if (option == null)
                      throw new NullPointerException();
                 throw new UnsupportedOperationException(option + " not supported");
              }
              return flags;
*** 132,142 ****
              throw new IllegalArgumentException("READ + APPEND not allowed");
          if (flags.append && flags.truncateExisting)
              throw new IllegalArgumentException("APPEND + TRUNCATE_EXISTING not allowed");
  
          FileDescriptor fdObj = open(dfd, path, pathForPermissionCheck, flags, mode);
!         return FileChannelImpl.open(fdObj, path.toString(), flags.read, flags.write, null);
      }
  
      /**
       * Constructs a file channel by opening the given file.
       */
--- 139,149 ----
              throw new IllegalArgumentException("READ + APPEND not allowed");
          if (flags.append && flags.truncateExisting)
              throw new IllegalArgumentException("APPEND + TRUNCATE_EXISTING not allowed");
  
          FileDescriptor fdObj = open(dfd, path, pathForPermissionCheck, flags, mode);
!         return FileChannelImpl.open(fdObj, path.toString(), flags.read, flags.write, flags.direct, null);
      }
  
      /**
       * Constructs a file channel by opening the given file.
       */