tests: check decoding of clock_adjtime syscall

* tests/clock_adjtime.c: New file.
* tests/clock_adjtime.test: New test.
* tests/.gitignore: Add clock_adjtime.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add clock_adjtime.test.

tests/.gitignore

@@ -20,6 +20,7 @@ chmod
 chown
 chown32
 chroot
+clock_adjtime
 clock_nanosleep
 clock_xettime
 copy_file_range

tests/Makefile.am

@@ -73,6 +73,7 @@ check_PROGRAMS = \
 	chown \
 	chown32 \
 	chroot \
+	clock_adjtime \
 	clock_nanosleep \
 	clock_xettime \
 	copy_file_range \
@@ -326,6 +327,7 @@ DECODER_TESTS = \
 	chown.test \
 	chown32.test \
 	chroot.test \
+	clock_adjtime.test \
 	clock_nanosleep.test \
 	clock_xettime.test \
 	copy_file_range.test \

tests/clock_adjtime.c

@@ -0,0 +1,61 @@
+/*
+ * This file is part of clock_adjtime strace test.
+ *
+ * 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_clock_adjtime
+
+# include <stdio.h>
+# include <time.h>
+# include <unistd.h>
+
+int
+main(void)
+{
+	long rc = syscall(__NR_clock_adjtime, CLOCK_MONOTONIC, NULL);
+	printf("clock_adjtime(CLOCK_MONOTONIC, NULL) = %ld %s (%m)\n",
+	       rc, errno2name());
+
+	void *efault = tail_alloc(1);
+	(void) tail_alloc(1);
+
+	rc = syscall(__NR_clock_adjtime, CLOCK_REALTIME, efault);
+	printf("clock_adjtime(CLOCK_REALTIME, %p) = %ld %s (%m)\n",
+	       efault, rc, errno2name());
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_clock_adjtime")
+
+#endif

tests/clock_adjtime.test

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check clock_adjtime syscall decoding.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a37