[PATCH] tests: add openat.test

[Katerina Koukiou]

* tests/openat.c: New file.
* tests/openat.test: New test.
* tests/.gitignore: Add openat.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(TESTS): Add openat.test.
---
 tests/.gitignore  |  1 +
 tests/Makefile.am |  2 ++
 tests/openat.c    | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/openat.test | 13 ++++++++++
 4 files changed, 94 insertions(+)
 create mode 100644 tests/openat.c
 create mode 100755 tests/openat.test

diff --git a/tests/.gitignore b/tests/.gitignore
index 449af18..62bf784 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -78,6 +78,7 @@ netlink_inet_diag
 netlink_unix_diag
 newfstatat
 oldselect
+openat
 pc
 personality
 pipe
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 3005382..1126b1d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -126,6 +126,7 @@ check_PROGRAMS = \
 	netlink_unix_diag \
 	newfstatat \
 	oldselect \
+	openat \
 	pc \
 	personality \
 	pipe \
@@ -299,6 +300,7 @@ TESTS = \
 	net.test \
 	newfstatat.test \
 	oldselect.test \
+	openat.test \
 	pc.test \
 	personality.test \
 	pipe.test \
diff --git a/tests/openat.c b/tests/openat.c
new file mode 100644
index 0000000..ce76018
--- /dev/null
+++ b/tests/openat.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2016 Katerina Koukiou <k.koukiou at gmail.com>
+ * 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>
+
+#if defined __NR_openat
+
+# include <fcntl.h>
+# include <stdio.h>
+# include <unistd.h>
+# include <errno.h>
+
+int
+main(void)
+{
+	int fd;
+	static const char fname[] = "openat_test_file";
+
+	fd = syscall(__NR_openat, -100, fname, O_RDONLY|O_CREAT, 0400);
+	if (fd == -1) {
+		if (errno == ENOSYS) {
+			printf("openat(AT_FDCWD, \"%s\", O_RDONLY|O_CREAT,"
+			        " 0400) = -1 ENOSYS (%m)\n", fname);
+		} else {
+			perror_msg_and_fail("openat");
+		}
+	} else {
+		printf("openat(AT_FDCWD, \"%s\", O_RDONLY|O_CREAT,"
+			" 0400) = %d\n", fname, fd);
+		close(fd);
+		if (unlink(fname) == -1)
+			perror_msg_and_fail("unlink");
+	}
+
+	if (fd != -1) {
+		fd = syscall(__NR_openat, -100, fname, O_RDONLY);
+		if (fd == -1 && errno == ENOENT) {
+			printf("openat(AT_FDCWD, \"%s\", O_RDONLY) = %d ENOENT"
+				" (%m)\n", fname, fd);
+		} else {
+			perror_msg_and_fail("openat");
+		}
+	}
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_openat")
+
+#endif
diff --git a/tests/openat.test b/tests/openat.test
new file mode 100755
index 0000000..2fc686f
--- /dev/null
+++ b/tests/openat.test
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Check openat syscall decoding.
+
+. "${srcdir=.}/init.sh"
+
+run_prog > /dev/null
+OUT="$LOG.out"
+run_strace -eopenat $args > "$OUT"
+match_diff "$LOG" "$OUT"
+rm -f "$OUT"
+
+exit 0
-- 
2.5.0