X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fshutdownd.c;h=8f765b45172388d89076a527ef81d4522636e3b2;hp=d88982453653a25a6976d180482e45b0fed55020;hb=67370238b55df4126e505007d46deaff8bb55a36;hpb=116205924ef498ab42df233c57e1c4357618ed8a

diff --git a/src/shutdownd.c b/src/shutdownd.c
index d88982453..8f765b451 100644
--- a/src/shutdownd.c
+++ b/src/shutdownd.c
@@ -99,33 +99,34 @@ static int read_packet(int fd, struct shutdownd_command *_c) {
         return 1;
 }
 
-static void warn_wall(struct shutdownd_command *c) {
+static void warn_wall(usec_t n, struct shutdownd_command *c) {
 
         assert(c);
         assert(c->warn_wall);
 
+        if (n >= c->elapse)
+                return;
+
         if (c->wall_message[0])
-                utmp_wall(c->wall_message);
+                utmp_wall(c->wall_message, NULL);
         else {
                 char date[FORMAT_TIMESTAMP_MAX];
                 const char* prefix;
-                char *l;
+                char *l = NULL;
 
                 if (c->mode == 'H')
-                        prefix = "The system is going down for system halt at";
+                        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";
+                        prefix = "The system is going down for power-off at ";
                 else if (c->mode == 'r')
-                        prefix = "The system is going down for reboot at";
+                        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)
+                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);
+                        utmp_wall(l, NULL);
                         free(l);
                 }
         }
@@ -151,8 +152,10 @@ static usec_t when_wall(usec_t n, usec_t elapse) {
 
         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);
@@ -173,7 +176,7 @@ int main(int argc, char *argv[]) {
                 _FD_MAX
         };
 
-        int r = 4, n_fds;
+        int r = EXIT_FAILURE, n_fds;
         int one = 1;
         struct shutdownd_command c;
         struct pollfd pollfd[_FD_MAX];
@@ -182,30 +185,31 @@ int main(int argc, char *argv[]) {
 
         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();
 
         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;
+                return EXIT_FAILURE;
         }
 
         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);
@@ -223,7 +227,7 @@ int main(int argc, char *argv[]) {
 
                 if ((pollfd[i].fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) {
                         log_error("timerfd_create(): %m");
-                        failed = false;
+                        failed = true;
                 }
         }
 
@@ -271,7 +275,7 @@ int main(int argc, char *argv[]) {
                                         /* 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 */
@@ -299,7 +303,7 @@ int main(int argc, char *argv[]) {
                 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 */
@@ -314,8 +318,10 @@ int main(int argc, char *argv[]) {
                 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("/run/nologin", "System is going down.")) < 0)
+                                log_error("Failed to create /run/nologin: %s", strerror(-e));
                         else
                                 unlink_nologin = true;
 
@@ -329,7 +335,7 @@ int main(int argc, char *argv[]) {
 
         } while (c.elapse > 0);
 
-        r = 0;
+        r = EXIT_SUCCESS;
 
         log_debug("systemd-shutdownd stopped as pid %lu", (unsigned long) getpid());
 
@@ -339,6 +345,9 @@ finish:
                 if (pollfd[i].fd >= 0)
                         close_nointr_nofail(pollfd[i].fd);
 
+        if (unlink_nologin)
+                unlink("/run/nologin");
+
         if (exec_shutdown) {
                 char sw[3];
 
@@ -346,13 +355,17 @@ finish:
                 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...");