Integrate contrib/netbsd-tests/bin/dd into the FreeBSD test suite as

bin/dd/tests

Ensure fdescfs is mounted on /dev/fd/ for the length testcase as it's used
in validating the characters read from /dev/zero

MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division

bin/dd/Makefile

@@ -1,6 +1,8 @@
 #	@(#)Makefile	8.1 (Berkeley) 5/31/93
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 PROG=	dd
 SRCS=	args.c conv.c conv_tab.c dd.c misc.c position.c
 
@@ -24,4 +26,8 @@ test: ${PROG} gen
 .endfor
 	@rm -f gen
 
+.if ${MK_TESTS} != "no"
+SUBDIR+=	tests
+.endif
+
 .include <bsd.prog.mk>

bin/dd/tests/Makefile

@@ -0,0 +1,7 @@
+# $FreeBSD$
+
+NETBSD_ATF_TESTS_SH=	dd_test
+
+.include <netbsd-tests.test.mk>
+
+.include <bsd.test.mk>

contrib/netbsd-tests/bin/dd/t_dd.sh

@@ -44,6 +44,12 @@ length_head() {
 	                "the one expected to fail.  (NetBSD PR bin/8521)"
 }
 length_body() {
+	# Begin FreeBSD
+	if ! df /dev/fd | grep -q '^fdescfs'; then
+		atf_skip "fdescfs is not mounted on /dev/fd"
+	fi
+	# End FreeBSD
+
 	test_dd_length 512 \
 	    "dd if=/dev/zero of=/dev/fd/5 count=1 5>&1 >/dev/null 2>/dev/null"
 	test_dd_length 512 \

etc/mtree/BSD.tests.dist

@@ -12,6 +12,8 @@
         ..
         date
         ..
+        dd
+        ..
         expr
         ..
         ls