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75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include "log.h"
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#include "util.h"
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#include "cgroup-util.h"
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int main(int argc, char*argv[]) {
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int ret = EXIT_FAILURE;
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if (argc != 2) {
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log_error("This program requires one argument.");
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return EXIT_FAILURE;
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}
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log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
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log_parse_environment();
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log_open();
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if (streq(argv[1], "start")) {
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if (unlink("/var/run/nologin") < 0 ||
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unlink("/etc/nologin") < 0) {
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if (errno != ENOENT) {
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log_error("Failed to remove nologin files: %m");
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goto finish;
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}
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}
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} else if (streq(argv[1], "stop")) {
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int r, q;
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if ((r = write_one_line_file("/var/run/nologin", "System is going down.")) < 0)
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log_error("Failed to create /var/run/nologin: %s", strerror(-r));
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if ((q = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, "/user", true)) < 0)
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log_error("Failed to kill sessions: %s", strerror(-q));
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if (r < 0 || q < 0)
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goto finish;
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} else {
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log_error("Unknown verb %s.", argv[1]);
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goto finish;
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}
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ret = EXIT_SUCCESS;
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finish:
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return ret;
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}
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