return 1;
}
-static void warn_wall(struct shutdownd_command *c) {
+static void warn_wall(usec_t n, struct shutdownd_command *c) {
+ char date[FORMAT_TIMESTAMP_MAX];
+ const char *prefix;
+ char *l = NULL;
assert(c);
assert(c->warn_wall);
- if (c->wall_message[0])
- utmp_wall(c->wall_message);
+ if (n >= c->elapse)
+ return;
+
+ if (c->mode == 'H')
+ prefix = "The system is going down for system halt at ";
+ else if (c->mode == 'P')
+ prefix = "The system is going down for power-off at ";
+ else if (c->mode == 'r')
+ prefix = "The system is going down for reboot at ";
+ else
+ assert_not_reached("Unknown mode!");
+
+ if (asprintf(&l, "%s%s%s%s!", c->wall_message, c->wall_message[0] ? "\n" : "",
+ prefix, format_timestamp(date, sizeof(date), c->elapse)) < 0)
+ log_error("Failed to allocate wall message");
else {
- char date[FORMAT_TIMESTAMP_MAX];
- const char* prefix;
- char *l;
-
- if (c->mode == 'H')
- prefix = "The system is going down for system halt at";
- else if (c->mode == 'P')
- prefix = "The system is going down for power-off at";
- else if (c->mode == 'r')
- prefix = "The system is going down for reboot at";
- else
- assert_not_reached("Unknown mode!");
-
- if (asprintf(&l, "%s %s!",
- prefix,
- format_timestamp(date, sizeof(date), c->elapse)) < 0)
- log_error("Failed to allocate wall message");
- else {
- utmp_wall(l);
- free(l);
- }
+ utmp_wall(l, NULL);
+ free(l);
}
}
left = elapse - n;
for (i = 0; i < ELEMENTSOF(table); i++)
- if (n + table[i].delay >= elapse)
+ if (n + table[i].delay >= elapse) {
sub = ((left / table[i].interval) * table[i].interval);
+ break;
+ }
if (i >= ELEMENTSOF(table))
sub = ((left / USEC_PER_HOUR) * USEC_PER_HOUR);
_FD_MAX
};
- int r = 4, n_fds;
- int one = 1;
+ int r = EXIT_FAILURE, n_fds;
struct shutdownd_command c;
struct pollfd pollfd[_FD_MAX];
bool exec_shutdown = false, unlink_nologin = false, failed = false;
if (getppid() != 1) {
log_error("This program should be invoked by init only.");
- return 1;
+ return EXIT_FAILURE;
}
if (argc > 1) {
log_error("This program does not take arguments.");
- return 1;
+ return EXIT_FAILURE;
}
log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
log_parse_environment();
log_open();
+ umask(0022);
+
if ((n_fds = sd_listen_fds(true)) < 0) {
log_error("Failed to read listening file descriptors from environment: %s", strerror(-r));
- return 1;
+ return EXIT_FAILURE;
}
if (n_fds != 1) {
log_error("Need exactly one file descriptor.");
- return 2;
- }
-
- if (setsockopt(SD_LISTEN_FDS_START, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
- log_error("SO_PASSCRED failed: %m");
- return 3;
+ return EXIT_FAILURE;
}
zero(c);
if ((pollfd[i].fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) {
log_error("timerfd_create(): %m");
- failed = false;
+ failed = true;
}
}
/* Warn immediately if less than 15 minutes are left */
if (n < c.elapse &&
n + 15*USEC_PER_MINUTE >= c.elapse)
- warn_wall(&c);
+ warn_wall(n, &c);
}
/* Disallow logins 5 minutes prior to shutdown */
if (pollfd[FD_WALL_TIMER].revents) {
struct itimerspec its;
- warn_wall(&c);
+ warn_wall(n, &c);
flush_fd(pollfd[FD_WALL_TIMER].fd);
/* Restart timer */
if (pollfd[FD_NOLOGIN_TIMER].revents) {
int e;
- if ((e = touch("/etc/nologin")) < 0)
- log_error("Failed to create /etc/nologin: %s", strerror(-e));
+ log_info("Creating /run/nologin, blocking further logins...");
+
+ if ((e = write_one_line_file_atomic("/run/nologin", "System is going down.")) < 0)
+ log_error("Failed to create /run/nologin: %s", strerror(-e));
else
unlink_nologin = true;
} while (c.elapse > 0);
- r = 0;
+ r = EXIT_SUCCESS;
log_debug("systemd-shutdownd stopped as pid %lu", (unsigned long) getpid());
if (pollfd[i].fd >= 0)
close_nointr_nofail(pollfd[i].fd);
- if (exec_shutdown) {
+ if (unlink_nologin)
+ unlink("/run/nologin");
+
+ if (exec_shutdown && !c.dry_run) {
char sw[3];
sw[0] = '-';
sw[1] = c.mode;
sw[2] = 0;
- execl(SYSTEMCTL_BINARY_PATH, "shutdown", sw, "now", NULL);
+ execl(SYSTEMCTL_BINARY_PATH,
+ "shutdown",
+ sw,
+ "now",
+ (c.warn_wall && c.wall_message[0]) ? c.wall_message :
+ (c.warn_wall ? NULL : "--no-wall"),
+ NULL);
+
log_error("Failed to execute /sbin/shutdown: %m");
}
- if (unlink_nologin)
- unlink("/etc/nologin");
-
sd_notify(false,
"STATUS=Exiting...");