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 "formats-util.h"
36 //#include "special.h"
37 //#include "unit-name.h"
39 #include "utmp-wtmp.h"
41 /// Additional includes needed by elogind
42 #include "string-util.h"
43 #include "time-util.h"
44 #include "update-utmp.h"
45 typedef struct Context {
52 #if 0 /// UNNEEDED by elogind
53 static usec_t get_startup_time(Context *c) {
54 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
60 r = sd_bus_get_property_trivial(
62 "org.freedesktop.systemd1",
63 "/org/freedesktop/systemd1",
64 "org.freedesktop.systemd1.Manager",
69 log_error_errno(r, "Failed to get timestamp: %s", bus_error_message(&error, r));
75 static int get_current_runlevel(Context *c) {
80 /* The first target of this list that is active or has
81 * a job scheduled wins. We prefer runlevels 5 and 3
82 * here over the others, since these are the main
83 * runlevels used on Fedora. It might make sense to
84 * change the order on some distributions. */
85 { '5', SPECIAL_GRAPHICAL_TARGET },
86 { '3', SPECIAL_MULTI_USER_TARGET },
87 { '1', SPECIAL_RESCUE_TARGET },
90 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
96 for (i = 0; i < ELEMENTSOF(table); i++) {
97 _cleanup_free_ char *state = NULL, *path = NULL;
99 path = unit_dbus_path_from_name(table[i].special);
103 r = sd_bus_get_property_string(
105 "org.freedesktop.systemd1",
107 "org.freedesktop.systemd1.Unit",
112 return log_warning_errno(r, "Failed to get state: %s", bus_error_message(&error, r));
114 if (streq(state, "active") || streq(state, "reloading"))
115 return table[i].runlevel;
122 static int on_reboot(Context *c) {
128 /* We finished start-up, so let's write the utmp
129 * record and send the audit msg */
132 if (c->audit_fd >= 0)
133 if (audit_log_user_comm_message(c->audit_fd, AUDIT_SYSTEM_BOOT, "", "systemd-update-utmp", NULL, NULL, NULL, 1) < 0 &&
135 r = log_error_errno(errno, "Failed to send audit message: %m");
139 #if 0 /// systemd hasn't started the system, so elogind always uses NOW()
140 /* If this call fails it will return 0, which
141 * utmp_put_reboot() will then fix to the current time */
142 t = get_startup_time(c);
144 t = now(CLOCK_REALTIME);
147 q = utmp_put_reboot(t);
149 log_error_errno(q, "Failed to write utmp record: %m");
156 static int on_shutdown(Context *c) {
161 /* We started shut-down, so let's write the utmp
162 * record and send the audit msg */
165 if (c->audit_fd >= 0)
166 if (audit_log_user_comm_message(c->audit_fd, AUDIT_SYSTEM_SHUTDOWN, "", "systemd-update-utmp", NULL, NULL, NULL, 1) < 0 &&
168 r = log_error_errno(errno, "Failed to send audit message: %m");
172 q = utmp_put_shutdown();
174 log_error_errno(q, "Failed to write utmp record: %m");
181 #if 0 /// UNNEEDED by elogind
182 static int on_runlevel(Context *c) {
183 int r = 0, q, previous, runlevel;
187 /* We finished changing runlevel, so let's write the
188 * utmp record and send the audit msg */
190 /* First, get last runlevel */
191 q = utmp_get_runlevel(&previous, NULL);
194 if (q != -ESRCH && q != -ENOENT)
195 return log_error_errno(q, "Failed to get current runlevel: %m");
200 /* Secondly, get new runlevel */
201 runlevel = get_current_runlevel(c);
206 if (previous == runlevel)
210 if (c->audit_fd >= 0) {
211 _cleanup_free_ char *s = NULL;
213 if (asprintf(&s, "old-level=%c new-level=%c",
214 previous > 0 ? previous : 'N',
215 runlevel > 0 ? runlevel : 'N') < 0)
218 if (audit_log_user_comm_message(c->audit_fd, AUDIT_SYSTEM_RUNLEVEL, s, "systemd-update-utmp", NULL, NULL, NULL, 1) < 0 && errno != EPERM)
219 r = log_error_errno(errno, "Failed to send audit message: %m");
223 q = utmp_put_runlevel(runlevel, previous);
224 if (q < 0 && q != -ESRCH && q != -ENOENT) {
225 log_error_errno(q, "Failed to write utmp record: %m");
233 #if 0 /// elogind needs this to be a callable function
234 int main(int argc, char *argv[]) {
236 void update_utmp(int argc, char* argv[], sd_bus *bus) {
243 #if 0 /// UNNEEDED by elogind
246 if (getppid() != 1) {
247 log_error("This program should be invoked by init only.");
252 log_error("This program requires one argument.");
256 log_set_target(LOG_TARGET_AUTO);
257 log_parse_environment();
268 /* If the kernel lacks netlink or audit support,
269 * don't worry about it. */
270 c.audit_fd = audit_open();
271 if (c.audit_fd < 0 && errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT)
272 log_error_errno(errno, "Failed to connect to audit log: %m");
274 #if 0 /// UNNEEDED by elogind
275 r = bus_connect_system_systemd(&c.bus);
277 log_error_errno(r, "Failed to get D-Bus connection: %m");
282 log_debug("systemd-update-utmp running as pid "PID_FMT, getpid());
284 if (streq(argv[1], "reboot"))
286 else if (streq(argv[1], "shutdown"))
288 else if (streq(argv[1], "runlevel"))
291 log_error("Unknown command %s", argv[1]);
295 log_debug("systemd-update-utmp stopped as pid "PID_FMT, getpid());
300 if (streq(argv[1], "reboot"))
302 else if (streq(argv[1], "shutdown"))
303 (void)on_shutdown(&c);
307 audit_close(c.audit_fd);
310 sd_bus_flush_close_unref(c.bus);
311 #if 0 /// UNNEEDED by elogind
312 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;