dbus.c (1854B)
1 /* 2 * Helpers for using D-Bus 3 * 4 * Copyright (C) 2019 Red Hat, Inc. 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2. See 7 * the COPYING file in the top-level directory. 8 */ 9 10 #include "qemu/osdep.h" 11 #include "qemu/dbus.h" 12 #include "qemu/error-report.h" 13 #include "qapi/error.h" 14 15 /* 16 * qemu_dbus_get_queued_owners() - return the list of queued unique names 17 * @connection: A GDBusConnection 18 * @name: a service name 19 * 20 * Return: a GStrv of unique names, or NULL on failure. 21 */ 22 GStrv 23 qemu_dbus_get_queued_owners(GDBusConnection *connection, const char *name, 24 Error **errp) 25 { 26 g_autoptr(GDBusProxy) proxy = NULL; 27 g_autoptr(GVariant) result = NULL; 28 g_autoptr(GVariant) child = NULL; 29 g_autoptr(GError) err = NULL; 30 31 proxy = g_dbus_proxy_new_sync(connection, G_DBUS_PROXY_FLAGS_NONE, NULL, 32 "org.freedesktop.DBus", 33 "/org/freedesktop/DBus", 34 "org.freedesktop.DBus", 35 NULL, &err); 36 if (!proxy) { 37 error_setg(errp, "Failed to create DBus proxy: %s", err->message); 38 return NULL; 39 } 40 41 result = g_dbus_proxy_call_sync(proxy, "ListQueuedOwners", 42 g_variant_new("(s)", name), 43 G_DBUS_CALL_FLAGS_NO_AUTO_START, 44 -1, NULL, &err); 45 if (!result) { 46 if (g_error_matches(err, 47 G_DBUS_ERROR, 48 G_DBUS_ERROR_NAME_HAS_NO_OWNER)) { 49 return g_new0(char *, 1); 50 } 51 error_setg(errp, "Failed to call ListQueuedOwners: %s", err->message); 52 return NULL; 53 } 54 55 child = g_variant_get_child_value(result, 0); 56 return g_variant_dup_strv(child, NULL); 57 }