return r;
if (all || n > 0) {
- unsigned int i;
+ unsigned i;
if (!value)
printf("%s=", name);
return r;
if (all || n > 0) {
- unsigned int i;
+ unsigned i;
if (!value)
printf("%s=", name);
if (user)
r = bus_connect_user_systemd(bus);
else {
- if (sd_booted() <= 0) {
+ if (sd_booted() <= 0)
/* Print a friendly message when the local system is actually not running systemd as PID 1. */
- log_error("System has not been booted with systemd as init system (PID 1). Can't operate.");
-
- return -EHOSTDOWN;
- }
+ return log_error_errno(SYNTHETIC_ERRNO(EHOSTDOWN),
+ "System has not been booted with systemd as init system (PID 1). Can't operate.");
r = bus_connect_system_systemd(bus);
}
break;
return 0;
}
-struct request_name_data {
- unsigned n_ref;
-
- const char *name;
- uint64_t flags;
- void *userdata;
-};
-
-static void request_name_destroy_callback(void *userdata) {
- struct request_name_data *data = userdata;
-
- assert(data);
- assert(data->n_ref > 0);
-
- log_debug("%s n_ref=%u", __func__, data->n_ref);
-
- data->n_ref--;
- if (data->n_ref == 0)
- free(data);
-}
-
-static int reload_dbus_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
- struct request_name_data *data = userdata;
- const sd_bus_error *e;
- int r;
-
- assert(data);
- assert(data->name);
- assert(data->n_ref > 0);
-
- e = sd_bus_message_get_error(m);
- if (e) {
- log_error_errno(sd_bus_error_get_errno(e), "Failed to reload DBus configuration: %s", e->message);
- return 1;
- }
-
- /* Here, use the default request name handler to avoid an infinite loop of reloading and requesting. */
- r = sd_bus_request_name_async(sd_bus_message_get_bus(m), NULL, data->name, data->flags, NULL, data->userdata);
- if (r < 0)
- log_error_errno(r, "Failed to request name: %m");
-
- return 1;
-}
-
-static int request_name_handler_may_reload_dbus(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
- struct request_name_data *data = userdata;
- uint32_t ret;
- int r;
-
- assert(m);
- assert(data);
-
- if (sd_bus_message_is_method_error(m, NULL)) {
- const sd_bus_error *e = sd_bus_message_get_error(m);
- _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *slot = NULL;
-
- if (!sd_bus_error_has_name(e, SD_BUS_ERROR_ACCESS_DENIED)) {
- log_debug_errno(sd_bus_error_get_errno(e),
- "Unable to request name, failing connection: %s",
- e->message);
-
- bus_enter_closing(sd_bus_message_get_bus(m));
- return 1;
- }
-
- log_debug_errno(sd_bus_error_get_errno(e),
- "Unable to request name, will retry after reloading DBus configuration: %s",
- e->message);
-
- /* If a service enables DynamicUser= and dbus.service started before the dynamic user is realized,
- * then the DBus policy about the service has not been enabled yet. So, let's try to reload DBus
- * configuration, and after that request the name again. Note that it seems that no privileges are
- * necessary to call the following method. */
-
- r = sd_bus_call_method_async(
- sd_bus_message_get_bus(m),
- &slot,
- "org.freedesktop.DBus",
- "/org/freedesktop/DBus",
- "org.freedesktop.DBus",
- "ReloadConfig",
- reload_dbus_handler,
- data, NULL);
- if (r < 0) {
- log_error_errno(r, "Failed to reload DBus configuration: %m");
- bus_enter_closing(sd_bus_message_get_bus(m));
- return 1;
- }
-
- data->n_ref ++;
- assert_se(sd_bus_slot_set_destroy_callback(slot, request_name_destroy_callback) >= 0);
-
- r = sd_bus_slot_set_floating(slot, true);
- if (r < 0)
- return r;
-
- return 1;
- }
-
- r = sd_bus_message_read(m, "u", &ret);
- if (r < 0)
- return r;
-
- switch (ret) {
-
- case BUS_NAME_ALREADY_OWNER:
- log_debug("Already owner of requested service name, ignoring.");
- return 1;
-
- case BUS_NAME_IN_QUEUE:
- log_debug("In queue for requested service name.");
- return 1;
-
- case BUS_NAME_PRIMARY_OWNER:
- log_debug("Successfully acquired requested service name.");
- return 1;
-
- case BUS_NAME_EXISTS:
- log_debug("Requested service name already owned, failing connection.");
- bus_enter_closing(sd_bus_message_get_bus(m));
- return 1;
- }
-
- log_debug("Unexpected response from RequestName(), failing connection.");
- bus_enter_closing(sd_bus_message_get_bus(m));
- return 1;
-}
-
-int bus_request_name_async_may_reload_dbus(sd_bus *bus, sd_bus_slot **ret_slot, const char *name, uint64_t flags, void *userdata) {
- _cleanup_free_ struct request_name_data *data = NULL;
- _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *slot = NULL;
- int r;
-
- data = new(struct request_name_data, 1);
- if (!data)
- return -ENOMEM;
-
- *data = (struct request_name_data) {
- .n_ref = 1,
- .name = name,
- .flags = flags,
- .userdata = userdata,
- };
-
- r = sd_bus_request_name_async(bus, &slot, name, flags, request_name_handler_may_reload_dbus, data);
- if (r < 0)
- return r;
-
- assert_se(sd_bus_slot_set_destroy_callback(slot, request_name_destroy_callback) >= 0);
- TAKE_PTR(data);
-
- if (ret_slot)
- *ret_slot = TAKE_PTR(slot);
- else {
- r = sd_bus_slot_set_floating(slot, true);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
int bus_reply_pair_array(sd_bus_message *m, char **l) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
char **k, **v;
projects / thirdparty / systemd.git / blobdiff