lapi: Add abisize.h

This moves ifdefs that decides if we should use compat version of
syscall or not from fallocate.h to lapi/abisize.h

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>

include/lapi/abisize.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2014 Linux Test Project
+ *  Cyril Hrubis <chrubis@suse.cz>
+ *
+ * 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 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef ABISIZE_H__
+#define ABISIZE_H__
+
+/*
+ * Determines if we have to split up 64 bit arguments or not
+ *
+ * Deals with 32bit ABIs that have 64bit syscalls
+ */
+#define LTP_USE_64_ABI \
+     (defined(__mips__) && _MIPS_SIM == _ABIN32) || \
+     (defined(__x86_64__) && defined(__ILP32__)) || \
+     __WORDSIZE == 64
+
+#endif /* ABISIZE_H__ */

testcases/kernel/syscalls/fallocate/fallocate.h

@@ -24,23 +24,22 @@
 #include <sys/types.h>
 #include <endian.h>
 #include "config.h"
+#include "lapi/abisize.h"
 #include "linux_syscall_numbers.h"
 
 #if !defined(HAVE_FALLOCATE)
 static inline long fallocate(int fd, int mode, loff_t offset, loff_t len)
 {
 	/* Deal with 32bit ABIs that have 64bit syscalls. */
-#if (defined(__mips__) && _MIPS_SIM == _ABIN32) || \
-     (defined(__x86_64__) && defined(__ILP32__)) || \
-     __WORDSIZE == 64
+# if LTP_USE_64_ABI
 	return ltp_syscall(__NR_fallocate, fd, mode, offset, len);
-#else
+# else
 	return (long)ltp_syscall(__NR_fallocate, fd, mode,
 				 __LONG_LONG_PAIR((off_t) (offset >> 32),
 						  (off_t) offset),
 				 __LONG_LONG_PAIR((off_t) (len >> 32),
 						  (off_t) len));
-#endif
+# endif
 }
 #endif