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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "bus-error.h"
#include "bus-locator.h"
#include "systemctl-daemon-reload.h"
#include "systemctl-util.h"
#include "systemctl.h"
int daemon_reload(int argc, char *argv[], void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
const char *method;
sd_bus *bus;
int r;
r = acquire_bus(BUS_MANAGER, &bus);
if (r < 0)
return r;
polkit_agent_open_maybe();
switch (arg_action) {
case ACTION_RELOAD:
method = "Reload";
break;
case ACTION_REEXEC:
method = "Reexecute";
break;
case ACTION_SYSTEMCTL:
method = streq(argv[0], "daemon-reexec") ? "Reexecute" :
/* "daemon-reload" */ "Reload";
break;
default:
assert_not_reached("Unexpected action");
}
r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method);
if (r < 0)
return bus_log_create_error(r);
/* Note we use an extra-long timeout here. This is because a reload or reexec means generators are
* rerun which are timed out after DEFAULT_TIMEOUT_USEC. Let's use twice that time here, so that the
* generators can have their timeout, and for everything else there's the same time budget in
* place. */
r = sd_bus_call(bus, m, DEFAULT_TIMEOUT_USEC * 2, &error, NULL);
/* On reexecution, we expect a disconnect, not a reply */
if (IN_SET(r, -ETIMEDOUT, -ECONNRESET) && streq(method, "Reexecute"))
r = 0;
if (r < 0 && arg_action == ACTION_SYSTEMCTL)
return log_error_errno(r, "Failed to reload daemon: %s", bus_error_message(&error, r));
/* Note that for the legacy commands (i.e. those with action != ACTION_SYSTEMCTL) we support
* fallbacks to the old ways of doing things, hence don't log any error in that case here. */
return r < 0 ? r : 0;
}
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