Add system init

system/init/CMakeLists.txt

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+# ##############################################################################
+# apps/system/init/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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.
+#
+# ##############################################################################
+
+if(CONFIG_SYSTEM_INIT)
+
+  set(CSRCS init.c action.c builtin.c import.c parser.c service.c)
+
+  nuttx_add_application(
+    MODULE
+    ${CONFIG_SYSTEM_INIT}
+    NAME
+    ${CONFIG_SYSTEM_INIT_PROGNAME}
+    STACKSIZE
+    ${CONFIG_SYSTEM_INIT_STACKSIZE}
+    PRIORITY
+    ${CONFIG_SYSTEM_INIT_PRIORITY}
+    SRCS
+    ${CSRCS})
+
+endif()

system/init/Kconfig

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+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config SYSTEM_INIT
+	tristate "System Init"
+	default n
+	depends on LIBC_EXECFUNCS
+	depends on SCHED_CHILD_STATUS
+	---help---
+		Enable system init.
+
+if SYSTEM_INIT
+
+#
+# Basic
+#
+
+config SYSTEM_INIT_PRIORITY
+	int "Thread priority"
+	default 100
+
+config SYSTEM_INIT_STACKSIZE
+	int "Stack size"
+	default DEFAULT_TASK_STACKSIZE
+
+config SYSTEM_INIT_PROGNAME
+	string "Program name"
+	default "init"
+
+#
+# RC
+#
+
+config SYSTEM_INIT_RC_LINE_MAX
+	int "Max line length of RC file"
+	default 128
+	---help---
+		Maximum line length of RC file.
+		More details: https://android.googlesource.com/platform/system/core/+/master/init/README.md
+
+#
+# Action
+#
+
+config SYSTEM_INIT_ACTION_CMD_ARGS_MAX
+	int "Max number of command arguments"
+	default 8
+	---help---
+		Maximum number of command arguments.
+		Form:
+		```
+		on <trigger>
+		   <command>
+		   <command>
+		   <command>
+		   ...
+		```
+
+config SYSTEM_INIT_ACTION_WARN_SLOW
+	int "Warn if command takes too long"
+	default 50
+	depends on SYSTEM_INIT_WARN
+	---help---
+		Warning if command took more than `SYSTEM_INIT_ACTION_WARN_SLOW` ms.
+
+config SYSTEM_INIT_ACTION_MANAGER_EVENT_MAX
+	int "Max number of action manager events"
+	default 32
+	---help---
+		Maximum number of action manager events.
+		```
+		struct action_manager_s
+		{
+		  ...
+		  FAR char *events[CONFIG_SYSTEM_INIT_ACTION_MANAGER_EVENT_MAX];
+		  ...
+		};
+		```
+
+#
+# Service
+#
+
+config SYSTEM_INIT_SERVICE_ARGS_MAX
+	int "Max number of service arguments"
+	default 8
+	range 3 64
+	---help---
+		Maximum number of service arguments,
+		including "name", "pathname" and key word "service"(at least 3). Form:
+		```
+		service <name> <pathname> [ <argument> ]*
+		   <option>
+		   <option>
+		   ...
+		```
+
+config SYSTEM_INIT_SERVICE_RESTART_PERIOD
+	int "Service restart period in ms"
+	default 5000
+
+#
+# Log level
+#
+
+config SYSTEM_INIT_ERR
+	bool "Enable error log"
+	default !DEFAULT_SMALL
+
+config SYSTEM_INIT_WARN
+	bool "Enable warning log"
+	depends on SYSTEM_INIT_ERR
+
+config SYSTEM_INIT_INFO
+	bool "Enable info log"
+	depends on SYSTEM_INIT_WARN
+
+config SYSTEM_INIT_DEBUG
+	bool "Enable debug log"
+	depends on SYSTEM_INIT_INFO
+
+endif

system/init/Make.defs

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+############################################################################
+# apps/system/init/Make.defs
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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_INIT),)
+CONFIGURED_APPS += $(APPDIR)/system/init
+endif

system/init/Makefile

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+############################################################################
+# apps/system/init/Makefile
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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
+
+# Init Example
+
+MAINSRC = init.c
+CSRCS += builtin.c
+CSRCS += parser.c
+CSRCS += action.c
+CSRCS += service.c
+CSRCS += import.c
+
+PROGNAME = $(CONFIG_SYSTEM_INIT_PROGNAME)
+PRIORITY = $(CONFIG_SYSTEM_INIT_PRIORITY)
+STACKSIZE = $(CONFIG_SYSTEM_INIT_STACKSIZE)
+MODULE = $(CONFIG_SYSTEM_INIT)
+
+include $(APPDIR)/Application.mk