nim: add ListSystemUpdateTask/DestroySystemUpdateTask (#390)

nx/include/switch.h

@@ -82,6 +82,7 @@ extern "C" {
 #include "switch/services/vi.h"
 #include "switch/services/nv.h"
 #include "switch/services/nifm.h"
+#include "switch/services/nim.h"
 #include "switch/services/ns.h"
 #include "switch/services/ldr.h"
 #include "switch/services/ro.h"

nx/include/switch/services/nim.h

@@ -0,0 +1,26 @@
+/**
+ * @file nim.h
+ * @brief Network Install Manager (nim) service IPC wrapper.
+ * @author SciresM
+ * @copyright libnx Authors
+ */
+#pragma once
+#include "../types.h"
+#include "../sf/service.h"
+
+/// SystemUpdateTaskId
+typedef struct {
+    alignas(8) Uuid uuid;  ///< UUID
+} NimSystemUpdateTaskId;
+
+/// Initialize nim.
+Result nimInitialize(void);
+
+/// Exit nim.
+void nimExit(void);
+
+/// Gets the Service object for the actual nim service session.
+Service* nimGetServiceSession(void);
+
+Result nimListSystemUpdateTask(s32 *out_count, NimSystemUpdateTaskId *out_task_ids, size_t max_task_ids);
+Result nimDestroySystemUpdateTask(const NimSystemUpdateTaskId *task_id);

nx/source/services/nim.c

@@ -0,0 +1,36 @@
+#include <string.h>
+#include "service_guard.h"
+#include "services/nim.h"
+
+#include "runtime/hosversion.h"
+
+static Service g_nimSrv;
+
+NX_GENERATE_SERVICE_GUARD(nim);
+
+Result _nimInitialize(void) {
+    return smGetService(&g_nimSrv, "nim");
+}
+
+void _nimCleanup(void) {
+    serviceClose(&g_nimSrv);
+}
+
+Service* nimGetServiceSession(void) {
+    return &g_nimSrv;
+}
+
+Result nimDestroySystemUpdateTask(const NimSystemUpdateTaskId *task_id) {
+    return serviceDispatchIn(&g_nimSrv, 1, *task_id);
+}
+
+Result nimListSystemUpdateTask(s32 *out_count, NimSystemUpdateTaskId *out_task_ids, size_t max_task_ids) {
+    return serviceDispatchOut(&g_nimSrv, 2, *out_count,
+        .buffer_attrs = {
+            SfBufferAttr_HipcMapAlias | SfBufferAttr_Out,
+        },
+        .buffers = {
+            { out_task_ids,  max_task_ids * sizeof(*out_task_ids) },
+        },
+    );
+}