1 files changed, 57 insertions, 0 deletions
diff --git a/regress/reexec.sh b/regress/reexec.sh
new file mode 100644
index 0000000..3f88d41
--- /dev/null
+++ b/regress/reexec.sh
@@ -0,0 +1,57 @@
+#	$OpenBSD: reexec.sh,v 1.13 2023/01/19 07:53:45 dtucker Exp $
+#	Placed in the Public Domain.
+
+tid="reexec tests"
+
+SSHD_ORIG=$SSHD
+SSHD_COPY=$OBJ/sshd
+
+# Start a sshd and then delete it
+start_sshd_copy ()
+{
+	# NB. prefer ln to cp here. On some OSX 19.4 configurations,
+	# djm has seen failure after fork() when the executable image
+	# has been removed from the filesystem.
+	ln $SSHD_ORIG $SSHD_COPY || cp $SSHD_ORIG $SSHD_COPY
+	SSHD=$SSHD_COPY
+	start_sshd
+	SSHD=$SSHD_ORIG
+}
+
+# Do basic copy tests
+copy_tests ()
+{
+	rm -f ${COPY}
+	${SSH} -nq -F $OBJ/ssh_config somehost \
+	    cat ${DATA} > ${COPY}
+	if [ $? -ne 0 ]; then
+		fail "ssh cat $DATA failed"
+	fi
+	cmp ${DATA} ${COPY}		|| fail "corrupted copy"
+	rm -f ${COPY}
+}
+
+verbose "test config passing"
+
+cp $OBJ/sshd_config $OBJ/sshd_config.orig
+start_sshd
+echo "InvalidXXX=no" >> $OBJ/sshd_config
+
+copy_tests
+
+stop_sshd
+
+cp $OBJ/sshd_config.orig $OBJ/sshd_config
+
+# cygwin can't fork a deleted binary
+if [ "$os" != "cygwin" ]; then
+
+verbose "test reexec fallback"
+
+start_sshd_copy
+$SUDO rm -f $SSHD_COPY
+
+copy_tests
+
+stop_sshd
+fi