From fe180cbf5d5747388720a989a5aa784b737d4433 Mon Sep 17 00:00:00 2001
From: Richard Hughes <richard@hughsie.com>
Date: Thu, 4 Nov 2021 13:30:27 +0000
Subject: [PATCH] trivial: Add fu_udev_device_get_sysfs_attr_uint64() for
 future code

---
 libfwupdplugin/fu-udev-device.c | 35 +++++++++++++++++++++++++++++++++
 libfwupdplugin/fu-udev-device.h |  5 +++++
 libfwupdplugin/fwupdplugin.map  |  1 +
 3 files changed, 41 insertions(+)

diff --git a/libfwupdplugin/fu-udev-device.c b/libfwupdplugin/fu-udev-device.c
index cbb31cf76..16b591c38 100644
--- a/libfwupdplugin/fu-udev-device.c
+++ b/libfwupdplugin/fu-udev-device.c
@@ -1594,6 +1594,41 @@ fu_udev_device_get_sysfs_attr(FuUdevDevice *self, const gchar *attr, GError **er
 #endif
 }
 
+/**
+ * fu_udev_device_get_sysfs_attr_uint64:
+ * @self: a #FuUdevDevice
+ * @attr: name of attribute to get
+ * @value: (out) (optional): value to return
+ * @error: (nullable): optional return location for an error
+ *
+ * Reads an arbitrary sysfs attribute 'attr' associated with UDEV device as a uint64.
+ *
+ * Returns: %TRUE for success
+ *
+ * Since: 1.7.2
+ **/
+gboolean
+fu_udev_device_get_sysfs_attr_uint64(FuUdevDevice *self,
+				     const gchar *attr,
+				     guint64 *value,
+				     GError **error)
+{
+	const gchar *tmp;
+	guint64 tmp64;
+
+	g_return_val_if_fail(FU_IS_UDEV_DEVICE(self), FALSE);
+	g_return_val_if_fail(attr != NULL, FALSE);
+	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);
+
+	tmp = fu_udev_device_get_sysfs_attr(self, attr, error);
+	if (tmp == NULL)
+		return FALSE;
+	tmp64 = fu_common_strtoull(tmp);
+	if (value != NULL)
+		*value = tmp64;
+	return TRUE;
+}
+
 /**
  * fu_udev_device_pread:
  * @self: a #FuUdevDevice
diff --git a/libfwupdplugin/fu-udev-device.h b/libfwupdplugin/fu-udev-device.h
index 97c907f13..106a97cb5 100644
--- a/libfwupdplugin/fu-udev-device.h
+++ b/libfwupdplugin/fu-udev-device.h
@@ -115,6 +115,11 @@ fu_udev_device_pread_full(FuUdevDevice *self,
 			  GError **error) G_GNUC_WARN_UNUSED_RESULT;
 const gchar *
 fu_udev_device_get_sysfs_attr(FuUdevDevice *self, const gchar *attr, GError **error);
+gboolean
+fu_udev_device_get_sysfs_attr_uint64(FuUdevDevice *self,
+				     const gchar *attr,
+				     guint64 *value,
+				     GError **error);
 gchar *
 fu_udev_device_get_parent_name(FuUdevDevice *self);
 
diff --git a/libfwupdplugin/fwupdplugin.map b/libfwupdplugin/fwupdplugin.map
index 9f7cf9c28..543a81736 100644
--- a/libfwupdplugin/fwupdplugin.map
+++ b/libfwupdplugin/fwupdplugin.map
@@ -949,5 +949,6 @@ LIBFWUPDPLUGIN_1.7.1 {
 LIBFWUPDPLUGIN_1.7.2 {
   global:
     fu_context_has_hwid_flag;
+    fu_udev_device_get_sysfs_attr_uint64;
   local: *;
 } LIBFWUPDPLUGIN_1.7.1;