1 files changed, 86 insertions, 0 deletions
diff --git a/usr.sbin/etcupdate/tests/empty_file_test.sh b/usr.sbin/etcupdate/tests/empty_file_test.sh
new file mode 100755
index 000000000000..5fe7a5ffb2b3
--- /dev/null
+++ b/usr.sbin/etcupdate/tests/empty_file_test.sh
@@ -0,0 +1,86 @@
+#!/bin/sh
+
+# Regression test for "etcupdate: Do not ignore empty files"
+
+FAILED=no
+WORKDIR=$(pwd)/work
+
+usage()
+{
+	echo "Usage: empty_file_test.sh [-s script] [-w workdir]"
+	exit 1
+}
+
+COMMAND=etcupdate
+while getopts "s:w:" option; do
+	case $option in
+		s)
+			COMMAND="sh $OPTARG"
+			;;
+		w)
+			WORKDIR=$OPTARG
+			;;
+		*)
+			echo
+			usage
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+if [ $# -ne 0 ]; then
+	usage
+fi
+
+SRC=$WORKDIR/src
+DEST=$WORKDIR/dest
+TEST=$WORKDIR/test
+
+# Clean up
+rm -rf $WORKDIR
+
+# Create a mock source tree
+mkdir -p $SRC
+touch $SRC/empty_file
+
+# Create a mock make script
+cat > $WORKDIR/mock_make.sh <<EOF
+#!/bin/sh
+
+# Scan all arguments for targets
+for arg in "\$@"; do
+    case \$arg in
+        *=*)
+            # Export variable assignments
+            export "\$arg"
+            ;;
+        distrib-dirs)
+            if [ -n "\$DESTDIR" ]; then
+                mkdir -p "\$DESTDIR/etc"
+            fi
+            ;;
+        distribution)
+            if [ -n "\$DESTDIR" ]; then
+                 cp $SRC/empty_file "\$DESTDIR/etc/empty_file"
+                 echo "./etc/empty_file type=file mode=0644 uname=root gname=wheel" > "\$DESTDIR/METALOG"
+            fi
+            ;;
+    esac
+done
+exit 0
+EOF
+chmod +x $WORKDIR/mock_make.sh
+
+# Run etcupdate
+# Use -B to skip build targets
+# Use -N to run without root privileges
+# Use 'extract' command to bypass root check in 'update' command
+$COMMAND extract -N -B -s $SRC -d $WORKDIR -m $WORKDIR/mock_make.sh > $WORKDIR/test.out 2>&1
+
+if [ -f $WORKDIR/current/etc/empty_file ]; then
+    echo "Empty file preserved."
+else
+    echo "Empty file missing from current tree."
+    FAILED=yes
+fi
+
+[ "${FAILED}" = no ]