mirror of
https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
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a5ab76da1e
Add the D-Bus API definition and its implementation in the form of a GPIO manager daemon and a companion command-line client as well as some additional configuration and data files (systemd service, example udev configuration, etc.) and test suites. Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Link: https://lore.kernel.org/r/20240812-dbus-v5-4-ead288509217@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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// SPDX-FileCopyrightText: 2022-2023 Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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#include <gio/gio.h>
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#include "helpers.h"
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GDBusConnection *gpiodbus_test_get_dbus_connection(void)
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{
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g_autoptr(GDBusConnection) con = NULL;
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g_autofree gchar *addr = NULL;
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g_autoptr(GError) err = NULL;
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addr = g_dbus_address_get_for_bus_sync(G_BUS_TYPE_SYSTEM, NULL, &err);
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if (!addr)
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g_error("Failed to get address on the bus: %s", err->message);
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con = g_dbus_connection_new_for_address_sync(addr,
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G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT |
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G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION,
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NULL, NULL, &err);
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if (!con)
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g_error("Failed to get system bus connection: %s",
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err->message);
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return g_object_ref(con);
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}
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typedef struct {
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gboolean *added;
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gchar *obj_path;
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} OnObjectAddedData;
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static void on_object_added(GDBusObjectManager *manager G_GNUC_UNUSED,
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GpiodbusObject *object, gpointer data)
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{
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OnObjectAddedData *cb_data = data;
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const gchar *path;
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path = g_dbus_object_get_object_path(G_DBUS_OBJECT(object));
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if (g_strcmp0(path, cb_data->obj_path) == 0)
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*cb_data->added = TRUE;
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}
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static gboolean on_timeout(gpointer data G_GNUC_UNUSED)
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{
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g_error("timeout reached waiting for the gpiochip interface to appear on the bus");
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return G_SOURCE_REMOVE;
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}
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void gpiodbus_test_wait_for_sim_intf(GPIOSimChip *sim)
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{
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g_autoptr(GDBusObjectManager) manager = NULL;
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g_autoptr(GDBusConnection) con = NULL;
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g_autoptr(GpiodbusObject) obj = NULL;
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g_autoptr(GError) err = NULL;
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g_autofree gchar *obj_path;
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OnObjectAddedData cb_data;
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gboolean added = FALSE;
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guint timeout_id;
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con = gpiodbus_test_get_dbus_connection();
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if (!con)
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g_error("failed to obtain a bus connection: %s", err->message);
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obj_path = g_strdup_printf("/io/gpiod1/chips/%s",
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g_gpiosim_chip_get_name(sim));
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cb_data.added = &added;
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cb_data.obj_path = obj_path;
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manager = gpiodbus_object_manager_client_new_sync(con,
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G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_NONE,
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"io.gpiod1", "/io/gpiod1/chips", NULL, &err);
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if (!manager)
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g_error("failed to create the object manager client: %s",
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err->message);
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g_signal_connect(manager, "object-added", G_CALLBACK(on_object_added),
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&cb_data);
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obj = GPIODBUS_OBJECT(g_dbus_object_manager_get_object(manager,
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obj_path));
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if (obj) {
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if (g_strcmp0(g_dbus_object_get_object_path(G_DBUS_OBJECT(obj)),
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obj_path) == 0)
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added = TRUE;
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}
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timeout_id = g_timeout_add_seconds(5, on_timeout, NULL);
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while (!added)
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g_main_context_iteration(NULL, TRUE);
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g_source_remove(timeout_id);
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}
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GVariant *gpiodbus_test_make_empty_request_config(void)
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{
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GVariantBuilder builder;
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g_variant_builder_init(&builder, G_VARIANT_TYPE("a{sv}"));
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return g_variant_ref_sink(g_variant_builder_end(&builder));
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}
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