2 This file is part of systemd.
4 Copyright 2010 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
30 //#include "alloc-util.h"
31 #include "bus-error.h"
32 //#include "bus-util.h"
33 //#include "format-util.h"
36 #include "process-util.h"
37 //#include "special.h"
39 //#include "unit-name.h"
41 #include "utmp-wtmp.h"
43 /// Additional includes needed by elogind
44 #include "string-util.h"
45 #include "time-util.h"
46 #include "update-utmp.h"
47 typedef struct Context {
54 #if 0 /// UNNEEDED by elogind
55 static usec_t get_startup_time(Context *c) {
56 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
62 r = sd_bus_get_property_trivial(
64 "org.freedesktop.systemd1",
65 "/org/freedesktop/systemd1",
66 "org.freedesktop.systemd1.Manager",
71 log_error_errno(r, "Failed to get timestamp: %s", bus_error_message(&error, r));
78 static int get_current_runlevel(Context *c) {
83 /* The first target of this list that is active or has
84 * a job scheduled wins. We prefer runlevels 5 and 3
85 * here over the others, since these are the main
86 * runlevels used on Fedora. It might make sense to
87 * change the order on some distributions. */
88 { '5', SPECIAL_GRAPHICAL_TARGET },
89 { '3', SPECIAL_MULTI_USER_TARGET },
90 { '1', SPECIAL_RESCUE_TARGET },
93 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
99 for (i = 0; i < ELEMENTSOF(table); i++) {
100 _cleanup_free_ char *state = NULL, *path = NULL;
102 path = unit_dbus_path_from_name(table[i].special);
106 r = sd_bus_get_property_string(
108 "org.freedesktop.systemd1",
110 "org.freedesktop.systemd1.Unit",
115 return log_warning_errno(r, "Failed to get state: %s", bus_error_message(&error, r));
117 if (STR_IN_SET(state, "active", "reloading"))
118 return table[i].runlevel;
125 static int on_reboot(Context *c) {
131 /* We finished start-up, so let's write the utmp
132 * record and send the audit msg */
135 if (c->audit_fd >= 0)
136 if (audit_log_user_comm_message(c->audit_fd, AUDIT_SYSTEM_BOOT, "", "systemd-update-utmp", NULL, NULL, NULL, 1) < 0 &&
138 r = log_error_errno(errno, "Failed to send audit message: %m");
142 #if 0 /// systemd hasn't started the system, so elogind always uses NOW()
143 /* If this call fails it will return 0, which
144 * utmp_put_reboot() will then fix to the current time */
145 t = get_startup_time(c);
147 t = now(CLOCK_REALTIME);
150 q = utmp_put_reboot(t);
152 log_error_errno(q, "Failed to write utmp record: %m");
159 static int on_shutdown(Context *c) {
164 /* We started shut-down, so let's write the utmp
165 * record and send the audit msg */
168 if (c->audit_fd >= 0)
169 if (audit_log_user_comm_message(c->audit_fd, AUDIT_SYSTEM_SHUTDOWN, "", "systemd-update-utmp", NULL, NULL, NULL, 1) < 0 &&
171 r = log_error_errno(errno, "Failed to send audit message: %m");
175 q = utmp_put_shutdown();
177 log_error_errno(q, "Failed to write utmp record: %m");
184 #if 0 /// UNNEEDED by elogind
185 static int on_runlevel(Context *c) {
186 int r = 0, q, previous, runlevel;
190 /* We finished changing runlevel, so let's write the
191 * utmp record and send the audit msg */
193 /* First, get last runlevel */
194 q = utmp_get_runlevel(&previous, NULL);
197 if (!IN_SET(q, -ESRCH, -ENOENT))
198 return log_error_errno(q, "Failed to get current runlevel: %m");
203 /* Secondly, get new runlevel */
204 runlevel = get_current_runlevel(c);
209 if (previous == runlevel)
213 if (c->audit_fd >= 0) {
214 _cleanup_free_ char *s = NULL;
216 if (asprintf(&s, "old-level=%c new-level=%c",
217 previous > 0 ? previous : 'N',
218 runlevel > 0 ? runlevel : 'N') < 0)
221 if (audit_log_user_comm_message(c->audit_fd, AUDIT_SYSTEM_RUNLEVEL, s, "systemd-update-utmp", NULL, NULL, NULL, 1) < 0 && errno != EPERM)
222 r = log_error_errno(errno, "Failed to send audit message: %m");
226 q = utmp_put_runlevel(runlevel, previous);
227 if (q < 0 && !IN_SET(q, -ESRCH, -ENOENT)) {
228 log_error_errno(q, "Failed to write utmp record: %m");
236 #if 0 /// elogind needs this to be a callable function
237 int main(int argc, char *argv[]) {
239 void update_utmp(int argc, char* argv[], sd_bus *bus) {
246 #if 0 /// UNNEEDED by elogind
249 if (getppid() != 1) {
250 log_error("This program should be invoked by init only.");
255 log_error("This program requires one argument.");
259 log_set_target(LOG_TARGET_AUTO);
260 log_parse_environment();
271 /* If the kernel lacks netlink or audit support,
272 * don't worry about it. */
273 c.audit_fd = audit_open();
274 if (c.audit_fd < 0 && !IN_SET(errno, EAFNOSUPPORT, EPROTONOSUPPORT))
275 log_error_errno(errno, "Failed to connect to audit log: %m");
277 #if 0 /// UNNEEDED by elogind
278 r = bus_connect_system_systemd(&c.bus);
280 log_error_errno(r, "Failed to get D-Bus connection: %m");
285 log_debug("systemd-update-utmp running as pid "PID_FMT, getpid_cached());
287 if (streq(argv[1], "reboot"))
289 else if (streq(argv[1], "shutdown"))
291 else if (streq(argv[1], "runlevel"))
294 log_error("Unknown command %s", argv[1]);
298 log_debug("systemd-update-utmp stopped as pid "PID_FMT, getpid_cached());
303 if (streq(argv[1], "reboot"))
305 else if (streq(argv[1], "shutdown"))
306 (void)on_shutdown(&c);
310 audit_close(c.audit_fd);
313 sd_bus_flush_close_unref(c.bus);
314 #if 0 /// UNNEEDED by elogind
315 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;