Index: findutils-4.4.2/find/fstype.c
===================================================================
--- findutils-4.4.2.orig/find/fstype.c
+++ findutils-4.4.2/find/fstype.c
@@ -205,7 +205,72 @@ must_read_fs_list(bool need_fs_type)
   return entries;
 }
 
+/* Return the device number from MOUNT_OPTIONS, if possible.
+   Otherwise return (dev_t) -1. Taken from 'mountlist' module
+   from gnulib.  */
+static dev_t
+dev_from_mount_options (char const *mount_options)
+{
+  /* GNU/Linux allows file system implementations to define their own
+     meaning for "dev=" mount options, so don't trust the meaning
+     here.  */
+# ifndef __linux__
+
+  static char const dev_pattern[] = ",dev=";
+  char const *devopt = strstr (mount_options, dev_pattern);
+
+  if (devopt)
+    {
+      char const *optval = devopt + sizeof dev_pattern - 1;
+      char *optvalend;
+      unsigned long int dev;
+      errno = 0;
+      dev = strtoul (optval, &optvalend, 16);
+      if (optval != optvalend
+	  && (*optvalend == '\0' || *optvalend == ',')
+	  && ! (dev == ULONG_MAX && errno == ERANGE)
+	  && dev == (dev_t) dev)
+	return dev;
+    }
+
+# endif
+  (void) mount_options;
+  return -1;
+}
+
+/* Return true if the file described by STATP is on autofs file system
+   and call set_fstype_devno () if the autofs file system is matched.  */
+static bool
+filesystem_check_autofs (const struct stat *statp)
+{
+  FILE *fp;
+  struct mntent *mnt;
+  struct mount_entry entry;
+  bool match = false;
+
+  /* open /proc/mounts because autofs is not listed in /etc/mtab */
+  fp = setmntent ("/proc/mounts", "r");
+  if (fp == NULL)
+    return false;
 
+  while ((mnt = getmntent (fp)))
+    {
+      if (0 != strcmp ("autofs", mnt->mnt_type))
+	  continue;
+
+      entry.me_mountdir = mnt->mnt_dir;
+      entry.me_dev = dev_from_mount_options (mnt->mnt_opts);
+      set_fstype_devno (&entry);
+      if (entry.me_dev == statp->st_dev)
+	{
+	  match = true;
+	  break;
+	}
+    }
+
+  endmntent (fp);
+  return match;
+}
 
 /* Return a newly allocated string naming the type of file system that the
    file PATH, described by STATP, is on.
@@ -244,6 +309,10 @@ file_system_type_uncached (const struct
     }
   free_file_system_list(entries);
 
+  /* check for autofs */
+  if (type == NULL && filesystem_check_autofs (statp))
+    type = xstrdup ("autofs");
+
   /* Don't cache unknown values. */
   fstype_known = (type != NULL);