From 3d12272d183061c11cd80bfe96ae89898f4c081c Mon Sep 17 00:00:00 2001 From: Aleksander Morgado Date: Fri, 30 Oct 2020 10:05:24 +0100 Subject: kerneldevice: allow loading port attributes In addition to loading port and device properties, we now also allow loading sysfs properties that are assumed to be static (i.e. their values won't change since loaded the first time). --- src/kerneldevice/mm-kernel-device-generic.c | 37 +++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'src/kerneldevice/mm-kernel-device-generic.c') diff --git a/src/kerneldevice/mm-kernel-device-generic.c b/src/kerneldevice/mm-kernel-device-generic.c index 90228f17..b1a3bf97 100644 --- a/src/kerneldevice/mm-kernel-device-generic.c +++ b/src/kerneldevice/mm-kernel-device-generic.c @@ -963,6 +963,41 @@ kernel_device_get_property (MMKernelDevice *self, /*****************************************************************************/ +static gchar * +build_attribute_data_key (const gchar *attribute) +{ + return g_strdup_printf ("ATTR:%s", attribute); +} + +static gboolean +kernel_device_has_attribute (MMKernelDevice *self, + const gchar *attribute) +{ + return has_sysfs_attribute (MM_KERNEL_DEVICE_GENERIC (self)->priv->sysfs_path, attribute); +} + +static const gchar * +kernel_device_get_attribute (MMKernelDevice *_self, + const gchar *attribute) +{ + MMKernelDeviceGeneric *self; + g_autofree gchar *key = NULL; + gchar *value = NULL; + + self = MM_KERNEL_DEVICE_GENERIC (_self); + + key = build_attribute_data_key (attribute); + value = g_object_get_data (G_OBJECT (self), key); + if (!value) { + value = read_sysfs_attribute_as_string (self->priv->sysfs_path, attribute); + if (value) + g_object_set_data_full (G_OBJECT (self), key, value, g_free); + } + return (const gchar *) value; +} + +/*****************************************************************************/ + MMKernelDevice * mm_kernel_device_generic_new_with_rules (MMKernelEventProperties *props, GArray *rules, @@ -1145,6 +1180,8 @@ mm_kernel_device_generic_class_init (MMKernelDeviceGenericClass *klass) kernel_device_class->cmp = kernel_device_cmp; kernel_device_class->has_property = kernel_device_has_property; kernel_device_class->get_property = kernel_device_get_property; + kernel_device_class->has_attribute = kernel_device_has_attribute; + kernel_device_class->get_attribute = kernel_device_get_attribute; /* Device-wide properties are stored per-port in the generic backend */ kernel_device_class->has_global_property = kernel_device_has_property; -- cgit v1.2.3-70-g09d2