autoupdate

[gnulib.git] / m4 / selinux-selinux-h.m4

diff --git a/m4/selinux-selinux-h.m4 b/m4/selinux-selinux-h.m4
index 20dc77c..35d2dbe 100644 (file)
--- a/m4/selinux-selinux-h.m4
+++ b/m4/selinux-selinux-h.m4
@@ -1,19 +1,31 @@
 # serial 3   -*- Autoconf -*-
-# Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2010 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
 # From Jim Meyering
 # Provide <selinux/selinux.h>, if necessary.
+# If it is already present, provide wrapper functions to guard against
+# misbehavior from getfilecon, lgetfilecon, and fgetfilecon.
 
 AC_DEFUN([gl_HEADERS_SELINUX_SELINUX_H],
 [
   AC_REQUIRE([gl_LIBSELINUX])
-  AC_CHECK_HEADERS([selinux/selinux.h],
-                  [SELINUX_SELINUX_H=],
-                  [SELINUX_SELINUX_H=selinux/selinux.h])
-  AC_SUBST([SELINUX_SELINUX_H])
+  AC_CHECK_HEADERS([selinux/selinux.h])
+
+  if test "$ac_cv_header_selinux_selinux_h" = yes; then
+    # We do have <selinux/selinux.h>, so do compile getfilecon.c
+    # and arrange to use its wrappers.
+    AC_LIBOBJ([getfilecon])
+    gl_CHECK_NEXT_HEADERS([selinux/selinux.h])
+    AC_DEFINE([getfilecon], [rpl_getfilecon],
+              [Always use our getfilecon wrapper.])
+    AC_DEFINE([lgetfilecon], [rpl_lgetfilecon],
+              [Always use our lgetfilecon wrapper.])
+    AC_DEFINE([fgetfilecon], [rpl_fgetfilecon],
+              [Always use our fgetfilecon wrapper.])
+  fi
 
   case "$ac_cv_search_setfilecon:$ac_cv_header_selinux_selinux_h" in
     no:*) # already warned