--- a
+++ b/m4/ltp-signalfd.m4
@@ -0,0 +1,91 @@
+dnl
+dnl Copyright (c) Red Hat Inc., 2008
+dnl
+dnl This program is free software;  you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY;  without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+dnl the GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program;  if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+dnl
+dnl Author: Masatake YAMATO <yamato@redhat.com>
+dnl
+
+dnl
+dnl LTP_CHECK_SYSCALL_SIGNALFD
+dnl --------------------------
+dnl
+dnl * Checking the existence of the libc wrapper for signalfd.
+dnl   If it exists, a shell variable LTP_SYSCALL_SIGNALFD_FUNCTION is set to "yes".
+dnl
+dnl * Checking the existence of signalfd.h.
+dnl   If it exists, a shell variable LTP_SYSCALL_SIGNALFD_HEADER is set to "yes".
+dnl
+dnl * Checking the prefix used in fileds for signalfd_siginfo structure.
+dnl   If it exists, a shell variable LTP_SYSCALL_SIGNALFD_FIELD_PREFIX is set to "given".
+dnl
+dnl About cpp macros defined in this macro,
+dnl see testcases/kernel/syscalls/signalfd/signalfd01.c of ltp.
+dnl
+
+AC_DEFUN([LTP_CHECK_SYSCALL_SIGNALFD],
+[dnl
+_LTP_CHECK_SYSCALL_SIGNALFD_FUNCTION
+_LTP_CHECK_SYSCALL_SIGNALFD_HEADER
+
+if test "$LTP_SYSCALL_SIGNALFD_HEADER" = yes; then
+   _LTP_CHECK_SYSCALL_SIGNALFD_FIELD_PREFIX
+fi]dnl
+)dnl
+
+dnl _LTP_CHECK_SYSCALL_SIGNALFD_FUNCTION
+dnl ------------------------------------
+dnl
+dnl
+AC_DEFUN([_LTP_CHECK_SYSCALL_SIGNALFD_FUNCTION],[dnl
+AC_CHECK_FUNCS(signalfd,[LTP_SYSCALL_SIGNALFD_FUNCTION=yes])])
+
+dnl _LTP_CHECK_SYSCALL_SIGNALFD_HEADER
+dnl ----------------------------------
+dnl
+dnl
+AC_DEFUN([_LTP_CHECK_SYSCALL_SIGNALFD_HEADER],
+[dnl
+AC_CHECK_HEADERS([linux/types.h])
+AC_CHECK_HEADERS(sys/signalfd.h linux/signalfd.h signalfd.h,[dnl
+LTP_SYSCALL_SIGNALFD_HEADER=yes],[],[dnl
+#ifdef HAVE_LINUX_TYPES_H
+#include <linux/types.h>
+#endif)
+]dnl
+)dnl
+]dnl
+)dnl
+
+dnl _LTP_CHECK_SYSCALL_SIGNALFD_FIELD_PREFIX
+dnl ----------------------------------------
+dnl
+dnl
+AC_DEFUN([_LTP_CHECK_SYSCALL_SIGNALFD_FIELD_PREFIX],
+[dnl
+AC_CHECK_MEMBERS([struct signalfd_siginfo.ssi_signo, struct signalfd_siginfo.signo],[dnl
+LTP_SYSCALL_SIGNALFD_FIELD_PREFIX=given],[],[dnl
+#ifdef HAVE_LINUX_TYPES_H
+#include <linux/types.h>
+#endif
+#if defined HAVE_SYS_SIGNALFD_H
+#include <sys/signalfd.h>
+#elif defined HAVE_LINUX_SIGNALFD_H
+#include <linux/signalfd.h>
+#elif defined HAVE_SIGNALFD_H
+#include <signalfd.h>
+#endif])
+]dnl
+)dnl