int bus_event_loop_with_idle( sd_event *e, sd_bus *bus, const char *name, usec_t timeout, check_idle_t check_idle, void *userdata) { bool exiting = false; int r, code; assert(e); assert(bus); assert(name); for (;;) { bool idle; r = sd_event_get_state(e); if (r < 0) return r; if (r == SD_EVENT_FINISHED) break; if (check_idle) idle = check_idle(userdata); else idle = true; r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout); if (r < 0) return r; if (r == 0 && !exiting) { r = sd_bus_try_close(bus); if (r == -EBUSY) continue; /* Fallback for dbus1 connections: we * unregister the name and wait for the * response to come through for it */ if (r == -ENOTSUP) { /* Inform the service manager that we * are going down, so that it will * queue all further start requests, * instead of assuming we are already * running. */ sd_notify(false, "STOPPING=1"); r = bus_async_unregister_and_exit(e, bus, name); if (r < 0) return r; exiting = true; continue; } if (r < 0) return r; sd_event_exit(e, 0); break; } } r = sd_event_get_exit_code(e, &code); if (r < 0) return r; return code; }
int main(int argc, char *argv[]) { _cleanup_close_ int bus_ref = -1; _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL, *bname = NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; const char *ua = NULL, *ub = NULL, *the_string = NULL; sd_bus *a, *b; int r, pipe_fds[2]; const char *nn; log_set_max_level(LOG_DEBUG); assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0); bus_ref = bus_kernel_create_bus(name, false, &bus_name); if (bus_ref == -ENOENT) return EXIT_TEST_SKIP; assert_se(bus_ref >= 0); address = strappend("kernel:path=", bus_name); assert_se(address); r = sd_bus_new(&a); assert_se(r >= 0); r = sd_bus_new(&b); assert_se(r >= 0); r = sd_bus_set_description(a, "a"); assert_se(r >= 0); r = sd_bus_set_address(a, address); assert_se(r >= 0); r = sd_bus_set_address(b, address); assert_se(r >= 0); assert_se(sd_bus_negotiate_timestamp(a, 1) >= 0); assert_se(sd_bus_negotiate_creds(a, true, _SD_BUS_CREDS_ALL) >= 0); assert_se(sd_bus_negotiate_timestamp(b, 0) >= 0); assert_se(sd_bus_negotiate_creds(b, true, 0) >= 0); r = sd_bus_start(a); assert_se(r >= 0); r = sd_bus_start(b); assert_se(r >= 0); assert_se(sd_bus_negotiate_timestamp(b, 1) >= 0); assert_se(sd_bus_negotiate_creds(b, true, _SD_BUS_CREDS_ALL) >= 0); r = sd_bus_get_unique_name(a, &ua); assert_se(r >= 0); printf("unique a: %s\n", ua); r = sd_bus_get_description(a, &nn); assert_se(r >= 0); printf("name of a: %s\n", nn); r = sd_bus_get_unique_name(b, &ub); assert_se(r >= 0); printf("unique b: %s\n", ub); r = sd_bus_get_description(b, &nn); assert_se(r >= 0); printf("name of b: %s\n", nn); assert_se(bus_kernel_get_bus_name(b, &bname) >= 0); assert_se(endswith(bname, name)); r = sd_bus_call_method(a, "this.doesnt.exist", "/foo", "meh.mah", "muh", &error, NULL, "s", "yayayay"); assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_SERVICE_UNKNOWN)); assert_se(r == -EHOSTUNREACH); r = sd_bus_add_match(b, NULL, "interface='waldo.com',member='Piep'", NULL, NULL); assert_se(r >= 0); r = sd_bus_emit_signal(a, "/foo/bar/waldo", "waldo.com", "Piep", "sss", "I am a string", "/this/is/a/path", "and.this.a.domain.name"); assert_se(r >= 0); r = sd_bus_try_close(b); assert_se(r == -EBUSY); r = sd_bus_process_priority(b, -10, &m); assert_se(r == 0); r = sd_bus_process(b, &m); assert_se(r > 0); assert_se(m); bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); assert_se(sd_bus_message_rewind(m, true) >= 0); r = sd_bus_message_read(m, "s", &the_string); assert_se(r >= 0); assert_se(streq(the_string, "I am a string")); sd_bus_message_unref(m); m = NULL; r = sd_bus_request_name(a, "net.x0pointer.foobar", 0); assert_se(r >= 0); r = sd_bus_message_new_method_call(b, &m, "net.x0pointer.foobar", "/a/path", "an.inter.face", "AMethod"); assert_se(r >= 0); assert_se(pipe2(pipe_fds, O_CLOEXEC) >= 0); assert_se(write(pipe_fds[1], "x", 1) == 1); pipe_fds[1] = safe_close(pipe_fds[1]); r = sd_bus_message_append(m, "h", pipe_fds[0]); assert_se(r >= 0); pipe_fds[0] = safe_close(pipe_fds[0]); r = sd_bus_send(b, m, NULL); assert_se(r >= 0); for (;;) { sd_bus_message_unref(m); m = NULL; r = sd_bus_process(a, &m); assert_se(r > 0); assert_se(m); bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); assert_se(sd_bus_message_rewind(m, true) >= 0); if (sd_bus_message_is_method_call(m, "an.inter.face", "AMethod")) { int fd; char x; r = sd_bus_message_read(m, "h", &fd); assert_se(r >= 0); assert_se(read(fd, &x, 1) == 1); assert_se(x == 'x'); break; } } r = sd_bus_release_name(a, "net.x0pointer.foobar"); assert_se(r >= 0); r = sd_bus_release_name(a, "net.x0pointer.foobar"); assert_se(r == -ESRCH); r = sd_bus_try_close(a); assert_se(r >= 0); sd_bus_unref(a); sd_bus_unref(b); return 0; }