kernel-device: new helper to load lower device link names

Based exclusively on sysfs for now. We could do this via netlink if
needed as well.

1 files changed, 26 insertions, 0 deletions

diff --git a/src/kerneldevice/mm-kernel-device-helpers.h b/src/kerneldevice/mm-kernel-device-helpers.h
new file mode 100644
index 00000000..48a86233
--- /dev/null
+++ b/src/kerneldevice/mm-kernel-device-helpers.h
@@ -0,0 +1,26 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details:
+ *
+ * Copyright (C) 2021 Aleksander Morgado <aleksander@aleksander.es>
+ */
+
+#ifndef MM_KERNEL_DEVICE_HELPERS_H
+#define MM_KERNEL_DEVICE_HELPERS_H
+
+#include <glib.h>
+
+/* For virtual devices that keep a "lower" link to the parent physical device
+ * they're based on, get the name of that parent physical device.
+ * (e.g. lower_device_name(qmimux0) == wwan0) */
+gchar *mm_kernel_device_get_lower_device_name (const gchar *sysfs_path);
+
+#endif /* MM_KERNEL_DEVICE_HERLPERS_H */