static void *server(void *p) {
struct context *c = p;
sd_bus *bus = NULL;
sd_id128_t id;
int r;
c->quit = false;
assert_se(sd_id128_randomize(&id) >= 0);
assert_se(sd_bus_new(&bus) >= 0);
assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
assert_se(sd_bus_set_server(bus, 1, id) >= 0);
assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "org.freedesktop.systemd.test", vtable, c) >= 0);
assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "org.freedesktop.systemd.test2", vtable, c) >= 0);
assert_se(sd_bus_add_fallback_vtable(bus, NULL, "/value", "org.freedesktop.systemd.ValueTest", vtable2, NULL, UINT_TO_PTR(20)) >= 0);
assert_se(sd_bus_add_node_enumerator(bus, NULL, "/value", enumerator_callback, NULL) >= 0);
assert_se(sd_bus_add_node_enumerator(bus, NULL, "/value/a", enumerator2_callback, NULL) >= 0);
assert_se(sd_bus_add_object_manager(bus, NULL, "/value") >= 0);
assert_se(sd_bus_add_object_manager(bus, NULL, "/value/a") >= 0);
assert_se(sd_bus_start(bus) >= 0);
log_error("Entering event loop on server");
while (!c->quit) {
log_error("Loop!");
r = sd_bus_process(bus, NULL);
if (r < 0) {
log_error_errno(r, "Failed to process requests: %m");
goto fail;
}
if (r == 0) {
r = sd_bus_wait(bus, (uint64_t) -1);
if (r < 0) {
log_error_errno(r, "Failed to wait: %m");
goto fail;
}
continue;
}
}
r = 0;
fail:
if (bus) {
sd_bus_flush(bus);
sd_bus_unref(bus);
}
return INT_TO_PTR(r);
}
int main(int argc, char *argv[]) {
_cleanup_(sd_bus_unrefp) sd_bus *a = NULL, *b = NULL;
sd_id128_t server_id;
bool is_unix;
int r, in_fd, out_fd;
log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
r = sd_listen_fds(0);
if (r == 0) {
in_fd = STDIN_FILENO;
out_fd = STDOUT_FILENO;
} else if (r == 1) {
in_fd = SD_LISTEN_FDS_START;
out_fd = SD_LISTEN_FDS_START;
} else {
log_error("Illegal number of file descriptors passed\n");
goto finish;
}
is_unix =
sd_is_socket(in_fd, AF_UNIX, 0, 0) > 0 &&
sd_is_socket(out_fd, AF_UNIX, 0, 0) > 0;
r = sd_bus_new(&a);
if (r < 0) {
log_error_errno(r, "Failed to allocate bus: %m");
goto finish;
}
r = sd_bus_set_address(a, arg_bus_path);
if (r < 0) {
log_error_errno(r, "Failed to set address to connect to: %m");
goto finish;
}
r = sd_bus_negotiate_fds(a, is_unix);
if (r < 0) {
log_error_errno(r, "Failed to set FD negotiation: %m");
goto finish;
}
r = sd_bus_start(a);
if (r < 0) {
log_error_errno(r, "Failed to start bus client: %m");
goto finish;
}
r = sd_bus_get_bus_id(a, &server_id);
if (r < 0) {
log_error_errno(r, "Failed to get server ID: %m");
goto finish;
}
r = sd_bus_new(&b);
if (r < 0) {
log_error_errno(r, "Failed to allocate bus: %m");
goto finish;
}
r = sd_bus_set_fd(b, in_fd, out_fd);
if (r < 0) {
log_error_errno(r, "Failed to set fds: %m");
goto finish;
}
r = sd_bus_set_server(b, 1, server_id);
if (r < 0) {
log_error_errno(r, "Failed to set server mode: %m");
goto finish;
}
r = sd_bus_negotiate_fds(b, is_unix);
if (r < 0) {
log_error_errno(r, "Failed to set FD negotiation: %m");
goto finish;
}
r = sd_bus_set_anonymous(b, true);
if (r < 0) {
log_error_errno(r, "Failed to set anonymous authentication: %m");
goto finish;
}
r = sd_bus_start(b);
if (r < 0) {
log_error_errno(r, "Failed to start bus client: %m");
goto finish;
}
for (;;) {
_cleanup_(sd_bus_message_unrefp)sd_bus_message *m = NULL;
int events_a, events_b, fd;
uint64_t timeout_a, timeout_b, t;
struct timespec _ts, *ts;
r = sd_bus_process(a, &m);
if (r < 0) {
log_error_errno(r, "Failed to process bus a: %m");
goto finish;
}
if (m) {
r = sd_bus_send(b, m, NULL);
if (r < 0) {
log_error_errno(r, "Failed to send message: %m");
goto finish;
}
}
if (r > 0)
continue;
r = sd_bus_process(b, &m);
if (r < 0) {
/* treat 'connection reset by peer' as clean exit condition */
if (r == -ECONNRESET)
r = 0;
goto finish;
}
if (m) {
r = sd_bus_send(a, m, NULL);
if (r < 0) {
log_error_errno(r, "Failed to send message: %m");
goto finish;
}
}
if (r > 0)
continue;
fd = sd_bus_get_fd(a);
if (fd < 0) {
log_error_errno(r, "Failed to get fd: %m");
goto finish;
}
events_a = sd_bus_get_events(a);
if (events_a < 0) {
log_error_errno(r, "Failed to get events mask: %m");
goto finish;
}
r = sd_bus_get_timeout(a, &timeout_a);
if (r < 0) {
log_error_errno(r, "Failed to get timeout: %m");
goto finish;
}
events_b = sd_bus_get_events(b);
if (events_b < 0) {
log_error_errno(r, "Failed to get events mask: %m");
goto finish;
}
r = sd_bus_get_timeout(b, &timeout_b);
if (r < 0) {
log_error_errno(r, "Failed to get timeout: %m");
goto finish;
}
t = timeout_a;
if (t == (uint64_t) -1 || (timeout_b != (uint64_t) -1 && timeout_b < timeout_a))
t = timeout_b;
if (t == (uint64_t) -1)
ts = NULL;
else {
usec_t nw;
nw = now(CLOCK_MONOTONIC);
if (t > nw)
t -= nw;
else
t = 0;
ts = timespec_store(&_ts, t);
}
{
struct pollfd p[3] = {
{.fd = fd, .events = events_a, },
{.fd = STDIN_FILENO, .events = events_b & POLLIN, },
{.fd = STDOUT_FILENO, .events = events_b & POLLOUT, }};
static int client(struct context *c) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_unref_ sd_bus *bus = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
const char *s;
int r;
assert_se(sd_bus_new(&bus) >= 0);
assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0);
assert_se(sd_bus_start(bus) >= 0);
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "NoOperation", &error, NULL, NULL);
assert_se(r >= 0);
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "s", "hallo");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
assert_se(streq(s, "<<<hallo>>>"));
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Doesntexist", &error, &reply, "");
assert_se(r < 0);
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD));
sd_bus_error_free(&error);
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "as", 1, "hallo");
assert_se(r < 0);
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS));
sd_bus_error_free(&error);
r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
assert_se(streq(s, "<<<hallo>>>"));
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, "s", "test");
assert_se(r >= 0);
r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
assert_se(streq(s, "test"));
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AutomaticIntegerProperty", &error, "u", 815);
assert_se(r >= 0);
assert_se(c->automatic_integer_property == 815);
r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AutomaticStringProperty", &error, "s", "Du Dödel, Du!");
assert_se(r >= 0);
assert_se(streq(c->automatic_string_property, "Du Dödel, Du!"));
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
fputs(s, stdout);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/value/xuzz", "org.freedesktop.systemd.ValueTest", "Value", &error, &reply, "s");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
log_info("read %s", s);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
fputs(s, stdout);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
fputs(s, stdout);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
fputs(s, stdout);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "");
assert_se(r >= 0);
bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "org.freedesktop.systemd.ValueTest2");
assert_se(r < 0);
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_INTERFACE));
sd_bus_error_free(&error);
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.ObjectManager", "GetManagedObjects", &error, &reply, "");
assert_se(r < 0);
assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD));
sd_bus_error_free(&error);
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value", "org.freedesktop.DBus.ObjectManager", "GetManagedObjects", &error, &reply, "");
assert_se(r >= 0);
bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.systemd.ValueTest", "NotifyTest", &error, NULL, "");
assert_se(r >= 0);
r = sd_bus_process(bus, &reply);
assert_se(r > 0);
assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.Properties", "PropertiesChanged"));
bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.systemd.ValueTest", "NotifyTest2", &error, NULL, "");
assert_se(r >= 0);
r = sd_bus_process(bus, &reply);
assert_se(r > 0);
assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.Properties", "PropertiesChanged"));
bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitInterfacesAdded", &error, NULL, "");
assert_se(r >= 0);
r = sd_bus_process(bus, &reply);
assert_se(r > 0);
assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"));
bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitInterfacesRemoved", &error, NULL, "");
assert_se(r >= 0);
r = sd_bus_process(bus, &reply);
assert_se(r > 0);
assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"));
bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitObjectAdded", &error, NULL, "");
assert_se(r >= 0);
r = sd_bus_process(bus, &reply);
assert_se(r > 0);
assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"));
bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitObjectRemoved", &error, NULL, "");
assert_se(r >= 0);
r = sd_bus_process(bus, &reply);
assert_se(r > 0);
assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"));
bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Exit", &error, NULL, "");
assert_se(r >= 0);
sd_bus_flush(bus);
return 0;
}
static void *server(void *p) {
struct context *c = p;
sd_bus *bus = NULL;
sd_id128_t id;
bool quit = false;
int r;
assert_se(sd_id128_randomize(&id) >= 0);
assert_se(sd_bus_new(&bus) >= 0);
assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
assert_se(sd_bus_set_server(bus, 1, id) >= 0);
assert_se(sd_bus_set_anonymous(bus, c->server_anonymous_auth) >= 0);
assert_se(sd_bus_negotiate_fds(bus, c->server_negotiate_unix_fds) >= 0);
assert_se(sd_bus_start(bus) >= 0);
while (!quit) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
r = sd_bus_process(bus, &m);
if (r < 0) {
log_error("Failed to process requests: %s", strerror(-r));
goto fail;
}
if (r == 0) {
r = sd_bus_wait(bus, (uint64_t) -1);
if (r < 0) {
log_error("Failed to wait: %s", strerror(-r));
goto fail;
}
continue;
}
if (!m)
continue;
log_info("Got message! member=%s", strna(sd_bus_message_get_member(m)));
if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Exit")) {
assert_se((sd_bus_can_send(bus, 'h') >= 1) == (c->server_negotiate_unix_fds && c->client_negotiate_unix_fds));
r = sd_bus_message_new_method_return(m, &reply);
if (r < 0) {
log_error("Failed to allocate return: %s", strerror(-r));
goto fail;
}
quit = true;
} else if (sd_bus_message_is_method_call(m, NULL, NULL)) {
r = sd_bus_message_new_method_error(
m,
&reply,
&SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method."));
if (r < 0) {
log_error("Failed to allocate return: %s", strerror(-r));
goto fail;
}
}
if (reply) {
r = sd_bus_send(bus, reply, NULL);
if (r < 0) {
log_error("Failed to send reply: %s", strerror(-r));
goto fail;
}
}
}
r = 0;
fail:
if (bus) {
sd_bus_flush(bus);
sd_bus_unref(bus);
}
return INT_TO_PTR(r);
}
int main(int argc, char *argv[]) {
enum {
MODE_BISECT,
MODE_CHART,
} mode = MODE_BISECT;
Type type = TYPE_KDBUS;
int i, pair[2] = { -1, -1 };
_cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL, *server_name = NULL;
_cleanup_close_ int bus_ref = -1;
const char *unique;
cpu_set_t cpuset;
size_t result;
sd_bus *b;
pid_t pid;
int r;
for (i = 1; i < argc; i++) {
if (streq(argv[i], "chart")) {
mode = MODE_CHART;
continue;
} else if (streq(argv[i], "legacy")) {
type = TYPE_LEGACY;
continue;
} else if (streq(argv[i], "direct")) {
type = TYPE_DIRECT;
continue;
}
assert_se(parse_sec(argv[i], &arg_loop_usec) >= 0);
}
assert_se(!MODE_BISECT || TYPE_KDBUS);
assert_se(arg_loop_usec > 0);
if (type == TYPE_KDBUS) {
assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0);
bus_ref = bus_kernel_create_bus(name, false, &bus_name);
if (bus_ref == -ENOENT)
exit(EXIT_TEST_SKIP);
assert_se(bus_ref >= 0);
address = strappend("kernel:path=", bus_name);
assert_se(address);
} else if (type == TYPE_LEGACY) {
const char *e;
e = secure_getenv("DBUS_SESSION_BUS_ADDRESS");
assert_se(e);
address = strdup(e);
assert_se(address);
}
r = sd_bus_new(&b);
assert_se(r >= 0);
if (type == TYPE_DIRECT) {
assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) >= 0);
r = sd_bus_set_fd(b, pair[0], pair[0]);
assert_se(r >= 0);
r = sd_bus_set_server(b, true, SD_ID128_NULL);
assert_se(r >= 0);
} else {
r = sd_bus_set_address(b, address);
assert_se(r >= 0);
r = sd_bus_set_bus_client(b, true);
assert_se(r >= 0);
}
r = sd_bus_start(b);
assert_se(r >= 0);
if (type != TYPE_DIRECT) {
r = sd_bus_get_unique_name(b, &unique);
assert_se(r >= 0);
server_name = strdup(unique);
assert_se(server_name);
}
sync();
setpriority(PRIO_PROCESS, 0, -19);
pid = fork();
assert_se(pid >= 0);
if (pid == 0) {
CPU_ZERO(&cpuset);
CPU_SET(0, &cpuset);
pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
safe_close(bus_ref);
sd_bus_unref(b);
switch (mode) {
case MODE_BISECT:
client_bisect(address, server_name);
break;
case MODE_CHART:
client_chart(type, address, server_name, pair[1]);
break;
}
_exit(0);
}
CPU_ZERO(&cpuset);
CPU_SET(1, &cpuset);
pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
server(b, &result);
if (mode == MODE_BISECT)
printf("Copying/memfd are equally fast at %zu bytes\n", result);
assert_se(waitpid(pid, NULL, 0) == pid);
safe_close(pair[1]);
sd_bus_unref(b);
return 0;
}
static void client_chart(Type type, const char *address, const char *server_name, int fd) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *x = NULL;
size_t csize;
sd_bus *b;
int r;
r = sd_bus_new(&b);
assert_se(r >= 0);
if (type == TYPE_DIRECT) {
r = sd_bus_set_fd(b, fd, fd);
assert_se(r >= 0);
} else {
r = sd_bus_set_address(b, address);
assert_se(r >= 0);
r = sd_bus_set_bus_client(b, true);
assert_se(r >= 0);
}
r = sd_bus_start(b);
assert_se(r >= 0);
r = sd_bus_call_method(b, server_name, "/", "benchmark.server", "Ping", NULL, NULL, NULL);
assert_se(r >= 0);
switch (type) {
case TYPE_KDBUS:
printf("SIZE\tCOPY\tMEMFD\n");
break;
case TYPE_LEGACY:
printf("SIZE\tLEGACY\n");
break;
case TYPE_DIRECT:
printf("SIZE\tDIRECT\n");
break;
}
for (csize = 1; csize <= MAX_SIZE; csize *= 2) {
usec_t t;
unsigned n_copying, n_memfd;
printf("%zu\t", csize);
if (type == TYPE_KDBUS) {
b->use_memfd = 0;
t = now(CLOCK_MONOTONIC);
for (n_copying = 0;; n_copying++) {
transaction(b, csize, server_name);
if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec)
break;
}
printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec));
b->use_memfd = -1;
}
t = now(CLOCK_MONOTONIC);
for (n_memfd = 0;; n_memfd++) {
transaction(b, csize, server_name);
if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec)
break;
}
printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec));
}
b->use_memfd = 1;
assert_se(sd_bus_message_new_method_call(b, &x, server_name, "/", "benchmark.server", "Exit") >= 0);
assert_se(sd_bus_message_append(x, "t", csize) >= 0);
assert_se(sd_bus_send(b, x, NULL) >= 0);
sd_bus_unref(b);
}
int main(int argc, char *argv[]) {
_cleanup_bus_unref_ sd_bus *a = NULL, *b = NULL;
sd_id128_t server_id;
bool is_unix;
int r;
if (argc > 1) {
log_error("This program takes no argument.");
return EXIT_FAILURE;
}
log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
log_parse_environment();
log_open();
is_unix =
sd_is_socket(STDIN_FILENO, AF_UNIX, 0, 0) > 0 &&
sd_is_socket(STDOUT_FILENO, AF_UNIX, 0, 0) > 0;
r = sd_bus_new(&a);
if (r < 0) {
log_error("Failed to allocate bus: %s", strerror(-r));
goto finish;
}
r = sd_bus_set_address(a, "unix:path=/run/dbus/system_bus_socket");
if (r < 0) {
log_error("Failed to set address to connect to: %s", strerror(-r));
goto finish;
}
r = sd_bus_set_negotiate_fds(a, is_unix);
if (r < 0) {
log_error("Failed to set FD negotiation: %s", strerror(-r));
goto finish;
}
r = sd_bus_start(a);
if (r < 0) {
log_error("Failed to start bus client: %s", strerror(-r));
goto finish;
}
r = sd_bus_get_server_id(a, &server_id);
if (r < 0) {
log_error("Failed to get server ID: %s", strerror(-r));
goto finish;
}
r = sd_bus_new(&b);
if (r < 0) {
log_error("Failed to allocate bus: %s", strerror(-r));
goto finish;
}
r = sd_bus_set_fd(b, STDIN_FILENO, STDOUT_FILENO);
if (r < 0) {
log_error("Failed to set fds: %s", strerror(-r));
goto finish;
}
r = sd_bus_set_server(b, 1, server_id);
if (r < 0) {
log_error("Failed to set server mode: %s", strerror(-r));
goto finish;
}
r = sd_bus_set_negotiate_fds(b, is_unix);
if (r < 0) {
log_error("Failed to set FD negotiation: %s", strerror(-r));
goto finish;
}
r = sd_bus_set_anonymous(b, true);
if (r < 0) {
log_error("Failed to set anonymous authentication: %s", strerror(-r));
goto finish;
}
r = sd_bus_start(b);
if (r < 0) {
log_error("Failed to start bus client: %s", strerror(-r));
goto finish;
}
for (;;) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
int events_a, events_b, fd;
uint64_t timeout_a, timeout_b, t;
struct timespec _ts, *ts;
r = sd_bus_process(a, &m);
if (r < 0) {
log_error("Failed to process bus: %s", strerror(-r));
goto finish;
}
if (m) {
r = sd_bus_send(b, m, NULL);
if (r < 0) {
log_error("Failed to send message: %s", strerror(-r));
goto finish;
}
}
if (r > 0)
continue;
r = sd_bus_process(b, &m);
if (r < 0) {
log_error("Failed to process bus: %s", strerror(-r));
goto finish;
}
if (m) {
r = sd_bus_send(a, m, NULL);
if (r < 0) {
log_error("Failed to send message: %s", strerror(-r));
goto finish;
}
}
if (r > 0)
continue;
fd = sd_bus_get_fd(a);
if (fd < 0) {
log_error("Failed to get fd: %s", strerror(-r));
goto finish;
}
events_a = sd_bus_get_events(a);
if (events_a < 0) {
log_error("Failed to get events mask: %s", strerror(-r));
goto finish;
}
r = sd_bus_get_timeout(a, &timeout_a);
if (r < 0) {
log_error("Failed to get timeout: %s", strerror(-r));
goto finish;
}
events_b = sd_bus_get_events(b);
if (events_b < 0) {
log_error("Failed to get events mask: %s", strerror(-r));
goto finish;
}
r = sd_bus_get_timeout(b, &timeout_b);
if (r < 0) {
log_error("Failed to get timeout: %s", strerror(-r));
goto finish;
}
t = timeout_a;
if (t == (uint64_t) -1 || (timeout_b != (uint64_t) -1 && timeout_b < timeout_a))
t = timeout_b;
if (t == (uint64_t) -1)
ts = NULL;
else {
usec_t nw;
nw = now(CLOCK_MONOTONIC);
if (t > nw)
t -= nw;
else
t = 0;
ts = timespec_store(&_ts, t);
}
{
struct pollfd p[3] = {
{.fd = fd, .events = events_a, },
{.fd = STDIN_FILENO, .events = events_b & POLLIN, },
{.fd = STDOUT_FILENO, .events = events_b & POLLOUT, }};