system: dd: add standalone dd command

enabling SYSTEM_DD will disable nsh_dd by selecting NSH_DISABLE_DD

Signed-off-by: chenxiaoyi <[email protected]>

system/dd/Kconfig

@@ -0,0 +1,30 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config SYSTEM_DD
+	tristate "system 'dd' command"
+	default n
+	select NSH_DISABLE_DD if NSH_LIBRARY
+	---help---
+		Enable support for the system 'dd' command.
+
+if SYSTEM_DD
+
+config SYSTEM_DD_PROGNAME
+	string "dd program name"
+	default "dd"
+	---help---
+		This is the name of the program that will be used when the dd
+		program is installed.
+
+config SYSTEM_DD_PRIORITY
+	int "dd task priority"
+	default 100
+
+config SYSTEM_DD_STACKSIZE
+	int "dd stack size"
+	default DEFAULT_TASK_STACKSIZE
+
+endif

system/dd/Make.defs

@@ -0,0 +1,23 @@
+############################################################################
+# apps/system/dd/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_SYSTEM_DD),)
+CONFIGURED_APPS += $(APPDIR)/system/dd
+endif

system/dd/Makefile

@@ -0,0 +1,34 @@
+############################################################################
+# apps/system/dd/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+# Standalone dd command
+
+PROGNAME = $(CONFIG_SYSTEM_DD_PROGNAME)
+PRIORITY = $(CONFIG_SYSTEM_DD_PRIORITY)
+STACKSIZE = $(CONFIG_SYSTEM_DD_STACKSIZE)
+MODULE = $(CONFIG_SYSTEM_DD)
+
+# Files
+
+MAINSRC = dd_main.c
+
+include $(APPDIR)/Application.mk