Add support for chmod, descriptor type to mode type mapping

app/enum.js

@@ -10,4 +10,10 @@ const NodeModeType = {
     Symlink: 40960,
 }
 
-module.exports = exports = { NodeDescriptorType, NodeModeType }
+const DescriptorTypeXNodeType = {
+    [NodeDescriptorType.File]: NodeModeType.File,
+    [NodeDescriptorType.Directory]: NodeModeType.Directory,
+    [NodeDescriptorType.Symlink]: NodeModeType.Symlink,
+}
+
+module.exports = exports = { NodeDescriptorType, NodeModeType, DescriptorTypeXNodeType }

app/ws/routes/fs.chmod.js

@@ -0,0 +1,34 @@
+const { Errors } = require('../../shared')
+const { NodeDescriptorType } = require('../../enum')
+
+// TODO should this return size info for the temp write file?
+module.exports = exports = async (message, di) => {
+    const Node = di.models.get('fs:Node')
+    const { path, mode } = message.data()
+
+    if ( !path ) {
+        return message.send_response(
+            message.fresh().error(Errors.NodeDoesNotExist)
+        )
+    }
+
+    if ( path === '/' ) {
+        return message.send_response(
+            message.fresh().error(Errors.NodePermissionFail)
+        )
+    }
+
+    const node = await Node.get_path(path, message.socket.session.overlay_name || 'mainline')
+    if ( !node ) {
+        return message.send_response(
+            message.fresh().error(Errors.NodeDoesNotExist)
+        )
+    }
+
+    node.mode = mode
+    await node.save()
+
+    message.send_response(
+        message.fresh().data({ node: node.to_api() })
+    )
+}