From 6ca55cd4bf67ded4f7a9fcd230f2a1860cca4dac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20D=C3=BCpmeier?= <j.duepmeier@googlemail.com>
Date: Tue, 7 Nov 2017 11:49:07 +0100
Subject: impl uinput shutdown

---
 uinput.c | 29 ++++++++++++++++++++++++++++-
 uinput.h |  2 ++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/uinput.c b/uinput.c
index 25d6c70..b9396c2 100644
--- a/uinput.c
+++ b/uinput.c
@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <errno.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "midimonster.h"
 #include "uinput.h"
@@ -233,6 +234,32 @@ static int backend_set(instance* inst, size_t num, channel** c, channel_value* v
 }
 
 static int backend_shutdown() {
-	//TODO impl
+	uinput_instance* data = NULL;
+	instance** instances = NULL;
+	size_t n = 0;
+
+	if (mm_backend_instances(BACKEND_NAME, &n, &instances)) {
+		fprintf(stderr, "Failed to fetch instance list\n");
+		return 1;
+	}
+
+	if (!n) {
+		free(instances);
+		return 0;
+	}
+
+	for (unsigned p = 0; p < n; p++) {
+		data = (uinput_instance*) instances[p]->impl;
+		if (data->fd_in < 0) {
+			close(data->fd_in);
+			data->fd_in = -1;
+		}
+
+		if (data->fd_out < 0) {
+			close(data->fd_out);
+			data->fd_out = -1;
+		}
+	}
+	free(instances);
 	return 0;
 }
diff --git a/uinput.h b/uinput.h
index 8c4925a..035696d 100644
--- a/uinput.h
+++ b/uinput.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <sys/types.h>
 #include <linux/input.h>
 
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