src/solaris/classes/sun/nio/fs/LinuxFileSystem.java

*** 1,7 ****
  /*
!  * Copyright (c) 2008, 2018, 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
--- 1,7 ----
  /*
!  * Copyright (c) 2008, 2019, 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
*** 77,90 ****
       */
      List<UnixMountEntry> getMountEntries(String fstab) {
          ArrayList<UnixMountEntry> entries = new ArrayList<>();
          try {
              long fp = setmntent(Util.toBytes(fstab), Util.toBytes("r"));
              try {
                  for (;;) {
                      UnixMountEntry entry = new UnixMountEntry();
!                     int res = getmntent(fp, entry);
                      if (res < 0)
                          break;
                      entries.add(entry);
                  }
              } finally {
--- 77,106 ----
       */
      List<UnixMountEntry> getMountEntries(String fstab) {
          ArrayList<UnixMountEntry> entries = new ArrayList<>();
          try {
              long fp = setmntent(Util.toBytes(fstab), Util.toBytes("r"));
+             int maxLineSize = 1024;
+             try {
+                 for (;;) {
+                     int lineSize = getlinelen(fp);
+                     if (lineSize == -1)
+                         break;
+                     if (lineSize > maxLineSize)
+                         maxLineSize = lineSize;
+                 }
+             } catch (UnixException x) {
+                 // nothing we need to do
+             } finally {
+                 rewind(fp);
+             }
+ 
              try {
                  for (;;) {
                      UnixMountEntry entry = new UnixMountEntry();
!                     // count in NUL character at the end
!                     int res = getmntent(fp, entry, maxLineSize + 1);
                      if (res < 0)
                          break;
                      entries.add(entry);
                  }
              } finally {