2 files changed, 60 insertions, 0 deletions
diff --git a/share/examples/kld/syscall/test/Makefile b/share/examples/kld/syscall/test/Makefile
new file mode 100644
index 000000000000..d14cd895c15d
--- /dev/null
+++ b/share/examples/kld/syscall/test/Makefile
@@ -0,0 +1,9 @@
+# Makefile for simple caller of syscall
+
+PACKAGE=examples
+FILESDIR=${SHAREDIR}/examples/kld/test
+PROG=	call
+MAN=
+WARNS?=	5
+
+.include <bsd.prog.mk>
diff --git a/share/examples/kld/syscall/test/call.c b/share/examples/kld/syscall/test/call.c
new file mode 100644
index 000000000000..e62f8f27f1dd
--- /dev/null
+++ b/share/examples/kld/syscall/test/call.c
@@ -0,0 +1,51 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 1999 Assar Westerlund
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <sys/param.h>
+#include <sys/module.h>
+#include <sys/syscall.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+main(int argc __unused, char **argv __unused)
+{
+	int modid, syscall_num;
+	struct module_stat stat;
+
+	stat.version = sizeof(stat);
+	if ((modid = modfind("sys/syscall")) == -1)
+		err(1, "modfind");
+	if (modstat(modid, &stat) != 0)
+		err(1, "modstat");
+	syscall_num = stat.data.intval;
+	return syscall (syscall_num);
+}