Add support for extended attributes

app/ws/routes/fs.xattr.get.js

@@ -0,0 +1,17 @@
+const { Errors } = require('../../shared')
+
+module.exports = exports = async (message, di) => {
+    const Node = di.models.get('fs:Node')
+    const { path, name } = message.data()
+
+    const node = await Node.get_path(path, message.socket.session.overlay_name || 'mainline')
+    if ( !node ) {
+        return message.send_response(
+            message.fresh().error(Errors.NodeDoesNotExist)
+        )
+    }
+
+    message.send_response(
+        message.fresh().data({ node: node.to_api(), value: node.get_xattr(name)?.value })
+    )
+}

app/ws/routes/fs.xattr.list.js

@@ -0,0 +1,19 @@
+const { Errors } = require('../../shared')
+
+module.exports = exports = async (message, di) => {
+    const Node = di.models.get('fs:Node')
+    const { path } = message.data()
+
+    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.guarantee_xattrs()
+
+    message.send_response(
+        message.fresh().data({ node: node.to_api(), names: node.extended_attributes.map(x => x.name) })
+    )
+}

app/ws/routes/fs.xattr.remove.js

@@ -0,0 +1,20 @@
+const { Errors } = require('../../shared')
+
+module.exports = exports = async (message, di) => {
+    const Node = di.models.get('fs:Node')
+    const { path, name } = message.data()
+
+    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.remove_xattr(name)
+    await node.save()
+
+    message.send_response(
+        message.fresh().data({ node: node.to_api() })
+    )
+}

app/ws/routes/fs.xattr.set.js

@@ -0,0 +1,20 @@
+const { Errors } = require('../../shared')
+
+module.exports = exports = async (message, di) => {
+    const Node = di.models.get('fs:Node')
+    const { path, name, value } = message.data()
+
+    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.set_xattr(name, value)
+    await node.save()
+
+    message.send_response(
+        message.fresh().data({ node: node.to_api() })
+    )
+}