new file mode 100644
--- /dev/null
+++ b/lib/acl.c
@@ -0,0 +1,62 @@
+/* acl.c - access control lists
+
+   Copyright (C) 2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   Written by Paul Eggert.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/stat.h>
+#ifndef S_ISLNK
+# define S_ISLNK(Mode) 0
+#endif
+
+#include "acl.h"
+
+#include <errno.h>
+#ifndef ENOSYS
+# define ENOSYS (-1)
+#endif
+
+#ifndef MIN_ACL_ENTRIES
+# define MIN_ACL_ENTRIES 4
+#endif
+
+/* Return 1 if PATH has a nontrivial access control list, 0 if not,
+   and -1 (setting errno) if an error is encountered.  */
+
+int
+file_has_acl (char const *path, struct stat const *pathstat)
+{
+  /* FIXME: This implementation should work on recent-enough versions
+     of HP-UX, Solaris, and Unixware, but it simply returns 0 with
+     POSIX 1003.1e (draft 17 -- abandoned), AIX, GNU/Linux, Irix, and
+     Tru64.  Please see Samba's source/lib/sysacls.c file for
+     fix-related ideas.  */
+
+#if HAVE_ACL && defined GETACLCNT
+  if (! S_ISLNK (pathstat->st_mode))
+    {
+      int n = acl (path, GETACLCNT, 0, NULL);
+      return n < 0 ? (errno == ENOSYS ? 0 : -1) : (MIN_ACL_ENTRIES < n);
+    }
+#endif
+
+  return 0;
+}

new file mode 100644
--- /dev/null
+++ b/lib/acl.h
@@ -0,0 +1,28 @@
+/* acl.c - access control lists
+
+   Copyright (C) 2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   Written by Paul Eggert.  */
+
+#if HAVE_SYS_ACL_H && HAVE_ACL
+# include <sys/acl.h>
+#endif
+#if ! defined GETACLCNT && defined ACL_CNT
+# define GETACLCNT ACL_CNT
+#endif
+
+int file_has_acl (char const *, struct stat const *);