Add a regression test for mkdir(2) and rmdir(2).

regress/sys/fs/Makefile

@@ -1,5 +1,5 @@
-#	$NetBSD: Makefile,v 1.1 1999/03/10 18:56:46 bouyer Exp $
+#	$NetBSD: Makefile,v 1.2 2002/01/27 21:49:46 thorpej Exp $
 
-SUBDIR= 
+SUBDIR= mkdir
 
 .include <bsd.subdir.mk>

regress/sys/fs/mkdir/Makefile

@@ -0,0 +1,9 @@
+#	$NetBSD: Makefile,v 1.1 2002/01/27 21:49:46 thorpej Exp $
+
+PROG=	mkdir
+NOMAN=	# defined
+
+regress: ${PROG}
+	@./${PROG} || (echo 'mkdir test failed' && exit 1)
+
+.include <bsd.prog.mk>

regress/sys/fs/mkdir/mkdir.c

@@ -0,0 +1,42 @@
+/*	$NetBSD: mkdir.c,v 1.1 2002/01/27 21:49:46 thorpej Exp $	*/
+
+/*
+ * Written by Jason R. Thorpe, Jan 27, 2002.
+ * Public domain.
+ */
+
+#include <sys/types.h>
+#include <err.h>
+#include <unistd.h>
+
+static const char *testdirnames[] = {
+	/*
+	 * IEEE 1003.1 second ed. 2.2.2.78:
+	 *
+	 *	If the pathname refers to a directory, it may also have
+	 *	one or more trailing slashes.  Multiple successive slashes
+	 *	are considered to be the same as one slash.
+	 */
+	"dir1/",
+	"dir2//",
+
+	NULL,
+};
+
+int	main(int, char *[]);
+
+int
+main(int argc, char *argv[])
+{
+	int i;
+
+	for (i = 0; testdirnames[i] != NULL; i++) {
+		(void) rmdir(testdirnames[i]);
+		if (mkdir(testdirnames[i], 0777))
+			err(1, "mkdir(\"%s\", 0777)", testdirnames[i]);
+		if (rmdir(testdirnames[i]))
+			err(1, "rmdir(\"%s\")", testdirnames[i]);
+	}
+
+	exit(0);
+}