84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "sd-bus.h"
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#include "bus-error.h"
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#include "bus-locator.h"
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#include "bus-util.h"
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#include "constants.h"
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#include "string-util.h"
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#include "systemctl.h"
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#include "systemctl-daemon-reload.h"
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#include "systemctl-util.h"
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int daemon_reload(enum action action, bool graceful) {
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
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const char *method;
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sd_bus *bus;
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int r;
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r = acquire_bus(BUS_MANAGER, &bus);
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if (r < 0)
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return r;
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polkit_agent_open_maybe();
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switch (action) {
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case ACTION_RELOAD:
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method = "Reload";
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break;
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case ACTION_REEXEC:
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method = "Reexecute";
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break;
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default:
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return -EINVAL;
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}
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r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method);
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if (r < 0)
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return bus_log_create_error(r);
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/* Reloading the daemon may take long, hence set a longer timeout here */
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r = sd_bus_call(bus, m, DAEMON_RELOAD_TIMEOUT_SEC, &error, NULL);
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/* On reexecution, we expect a disconnect, not a reply */
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if (IN_SET(r, -ETIMEDOUT, -ECONNRESET) && action == ACTION_REEXEC)
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return 1;
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if (r < 0) {
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if (graceful) { /* If graceful mode is selected, debug log, but don't fail */
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log_debug_errno(r, "%s daemon failed via the bus, ignoring: %s",
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method, bus_error_message(&error, r));
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return 0;
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}
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return log_error_errno(r, "%s daemon failed: %s",
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method, bus_error_message(&error, r));
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}
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return 1;
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}
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int verb_daemon_reload(int argc, char *argv[], void *userdata) {
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enum action a;
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int r;
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assert(argc >= 1);
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if (streq(argv[0], "daemon-reexec"))
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a = ACTION_REEXEC;
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else if (streq(argv[0], "daemon-reload"))
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a = ACTION_RELOAD;
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else
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assert_not_reached();
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r = daemon_reload(a, /* graceful= */ false);
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if (r < 0)
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return r;
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return 0;
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}
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