tests: check decoding of remap_file_pages syscall

* tests/remap_file_pages.c: New file.
* tests/remap_file_pages.test: New test.
* tests/.gitignore: Add remap_file_pages.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add remap_file_pages.test.
diff --git a/tests/.gitignore b/tests/.gitignore
index 36504d1..7fa97ba 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -151,6 +151,7 @@
 readv
 reboot
 recvmsg
+remap_file_pages
 rename
 renameat
 renameat2
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 90991b0..d644a47 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -203,6 +203,7 @@
 	readv \
 	reboot \
 	recvmsg \
+	remap_file_pages \
 	rename \
 	renameat \
 	renameat2 \
@@ -471,6 +472,7 @@
 	readv.test \
 	reboot.test \
 	recvmsg.test \
+	remap_file_pages.test \
 	rename.test \
 	renameat.test \
 	renameat2.test \
diff --git a/tests/remap_file_pages.c b/tests/remap_file_pages.c
new file mode 100644
index 0000000..3714a17
--- /dev/null
+++ b/tests/remap_file_pages.c
@@ -0,0 +1,63 @@
+/*
+ * Check decoding of remap_file_pages syscall.
+ *
+ * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+#include <sys/syscall.h>
+
+#ifdef __NR_remap_file_pages
+
+# include <stdio.h>
+# include <sys/mman.h>
+# include <unistd.h>
+
+int
+main(void)
+{
+	const unsigned long addr = (unsigned long) 0xfacefeeddeadbeef;
+	const unsigned long size = (unsigned long) 0xdefaced1bad2f00d;
+	const unsigned long prot = (unsigned long) 0xacedcafe00000000
+				   | PROT_READ|PROT_WRITE|PROT_EXEC;
+	const unsigned long pgoff = (unsigned long) 0xcaf3babebad4deed;
+	const unsigned long flags = (unsigned long) 0xbadc0ded00000000
+				   | MAP_PRIVATE|MAP_ANONYMOUS;
+
+	long rc = syscall(__NR_remap_file_pages, addr, size, prot, pgoff, flags);
+	printf("remap_file_pages(%#lx, %lu, %s, %lu, %s) = %ld %s (%m)\n",
+	       addr, size, "PROT_READ|PROT_WRITE|PROT_EXEC", pgoff,
+	       "MAP_PRIVATE|MAP_ANONYMOUS", rc, errno2name());
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_remap_file_pages")
+
+#endif
diff --git a/tests/remap_file_pages.test b/tests/remap_file_pages.test
new file mode 100755
index 0000000..9d51a9a
--- /dev/null
+++ b/tests/remap_file_pages.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check remap_file_pages syscall decoding.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff