1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <sys/reboot.h>
28 #include <sys/ioctl.h>
32 #include <sys/socket.h>
34 #include <dbus/dbus.h>
40 #include "utmp-wtmp.h"
45 static const char *arg_type = NULL;
46 static const char *arg_property = NULL;
47 static bool arg_all = false;
48 static bool arg_replace = false;
49 static bool arg_session = false;
50 static bool arg_no_block = false;
51 static bool arg_immediate = false;
52 static bool arg_no_wtmp = false;
53 static bool arg_no_sync = false;
54 static bool arg_no_wall = false;
55 static bool arg_dry = false;
56 static bool arg_quiet = false;
57 static char **arg_wall = NULL;
75 } arg_action = ACTION_SYSTEMCTL;
77 static bool error_is_no_service(DBusError *error) {
81 if (!dbus_error_is_set(error))
84 if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
87 if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
90 return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
93 static int bus_iter_get_basic_and_next(DBusMessageIter *iter, int type, void *data, bool next) {
98 if (dbus_message_iter_get_arg_type(iter) != type)
101 dbus_message_iter_get_basic(iter, data);
103 if (!dbus_message_iter_next(iter) != !next)
109 static int bus_check_peercred(DBusConnection *c) {
116 assert_se(dbus_connection_get_unix_fd(c, &fd));
118 l = sizeof(struct ucred);
119 if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) {
120 log_error("SO_PEERCRED failed: %m");
124 if (l != sizeof(struct ucred)) {
125 log_error("SO_PEERCRED returned wrong size.");
135 static int columns(void) {
136 static int parsed_columns = 0;
139 if (parsed_columns > 0)
140 return parsed_columns;
142 if ((e = getenv("COLUMNS")))
143 parsed_columns = atoi(e);
145 if (parsed_columns <= 0) {
149 if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) >= 0)
150 parsed_columns = ws.ws_col;
153 if (parsed_columns <= 0)
156 return parsed_columns;
160 static void warn_wall(enum action action) {
161 static const char *table[_ACTION_MAX] = {
162 [ACTION_HALT] = "The system is going down for system halt NOW!",
163 [ACTION_REBOOT] = "The system is going down for reboot NOW!",
164 [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
165 [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
166 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
175 if (!(p = strv_join(arg_wall, " "))) {
176 log_error("Failed to join strings.");
192 utmp_wall(table[action]);
195 static int list_units(DBusConnection *bus, char **args, unsigned n) {
196 DBusMessage *m = NULL, *reply = NULL;
199 DBusMessageIter iter, sub, sub2;
202 dbus_error_init(&error);
206 if (!(m = dbus_message_new_method_call(
207 "org.freedesktop.systemd1",
208 "/org/freedesktop/systemd1",
209 "org.freedesktop.systemd1.Manager",
211 log_error("Could not allocate message.");
215 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
216 log_error("Failed to issue method call: %s", error.message);
221 if (!dbus_message_iter_init(reply, &iter) ||
222 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
223 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
224 log_error("Failed to parse reply.");
229 dbus_message_iter_recurse(&iter, &sub);
231 printf("%-45s %-6s %-12s %-12s %-15s %s\n", "UNIT", "LOAD", "ACTIVE", "SUB", "JOB", "DESCRIPTION");
233 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
234 const char *id, *description, *load_state, *active_state, *sub_state, *unit_state, *job_type, *job_path, *dot;
237 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
238 log_error("Failed to parse reply.");
243 dbus_message_iter_recurse(&sub, &sub2);
245 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
246 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
247 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
248 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
249 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
250 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_state, true) < 0 ||
251 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &job_id, true) < 0 ||
252 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &job_type, true) < 0 ||
253 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, false) < 0) {
254 log_error("Failed to parse reply.");
259 if ((!arg_type || ((dot = strrchr(id, '.')) &&
260 streq(dot+1, arg_type))) &&
261 (arg_all || !streq(active_state, "inactive"))) {
265 printf("%-45s %-6s %-12s %-12s%n", id, load_state, active_state, sub_state, &a);
268 printf(" %-15s%n", job_type, &b);
272 if (a + b + 2 < columns()) {
276 printf("%.*s", columns() - a - b - 2, description);
283 dbus_message_iter_next(&sub);
287 printf("\n%u units listed.\n", k);
289 printf("\n%u live units listed. Pass --all to see dead units, too.\n", k);
295 dbus_message_unref(m);
298 dbus_message_unref(reply);
300 dbus_error_free(&error);
305 static int list_jobs(DBusConnection *bus, char **args, unsigned n) {
306 DBusMessage *m = NULL, *reply = NULL;
309 DBusMessageIter iter, sub, sub2;
312 dbus_error_init(&error);
316 if (!(m = dbus_message_new_method_call(
317 "org.freedesktop.systemd1",
318 "/org/freedesktop/systemd1",
319 "org.freedesktop.systemd1.Manager",
321 log_error("Could not allocate message.");
325 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
326 log_error("Failed to issue method call: %s", error.message);
331 if (!dbus_message_iter_init(reply, &iter) ||
332 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
333 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
334 log_error("Failed to parse reply.");
339 dbus_message_iter_recurse(&iter, &sub);
341 printf("%4s %-45s %-17s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
343 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
344 const char *name, *type, *state, *job_path, *unit_path;
347 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
348 log_error("Failed to parse reply.");
353 dbus_message_iter_recurse(&sub, &sub2);
355 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
356 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
357 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
358 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
359 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
360 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
361 log_error("Failed to parse reply.");
366 printf("%4u %-45s %-17s %-7s\n", id, name, type, state);
369 dbus_message_iter_next(&sub);
372 printf("\n%u jobs listed.\n", k);
377 dbus_message_unref(m);
380 dbus_message_unref(reply);
382 dbus_error_free(&error);
387 static int load_unit(DBusConnection *bus, char **args, unsigned n) {
388 DBusMessage *m = NULL, *reply = NULL;
393 dbus_error_init(&error);
398 for (i = 1; i < n; i++) {
400 if (!(m = dbus_message_new_method_call(
401 "org.freedesktop.systemd1",
402 "/org/freedesktop/systemd1",
403 "org.freedesktop.systemd1.Manager",
405 log_error("Could not allocate message.");
410 if (!dbus_message_append_args(m,
411 DBUS_TYPE_STRING, &args[i],
412 DBUS_TYPE_INVALID)) {
413 log_error("Could not append arguments to message.");
418 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
419 log_error("Failed to issue method call: %s", error.message);
424 dbus_message_unref(m);
425 dbus_message_unref(reply);
434 dbus_message_unref(m);
437 dbus_message_unref(reply);
439 dbus_error_free(&error);
444 static int cancel_job(DBusConnection *bus, char **args, unsigned n) {
445 DBusMessage *m = NULL, *reply = NULL;
450 dbus_error_init(&error);
455 for (i = 1; i < n; i++) {
459 if (!(m = dbus_message_new_method_call(
460 "org.freedesktop.systemd1",
461 "/org/freedesktop/systemd1",
462 "org.freedesktop.systemd1.Manager",
464 log_error("Could not allocate message.");
469 if ((r = safe_atou(args[i], &id)) < 0) {
470 log_error("Failed to parse job id: %s", strerror(-r));
474 assert_cc(sizeof(uint32_t) == sizeof(id));
475 if (!dbus_message_append_args(m,
476 DBUS_TYPE_UINT32, &id,
477 DBUS_TYPE_INVALID)) {
478 log_error("Could not append arguments to message.");
483 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
484 log_error("Failed to issue method call: %s", error.message);
489 if (!dbus_message_get_args(reply, &error,
490 DBUS_TYPE_OBJECT_PATH, &path,
491 DBUS_TYPE_INVALID)) {
492 log_error("Failed to parse reply: %s", error.message);
497 dbus_message_unref(m);
498 if (!(m = dbus_message_new_method_call(
499 "org.freedesktop.systemd1",
501 "org.freedesktop.systemd1.Job",
503 log_error("Could not allocate message.");
508 dbus_message_unref(reply);
509 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
510 log_error("Failed to issue method call: %s", error.message);
515 dbus_message_unref(m);
516 dbus_message_unref(reply);
524 dbus_message_unref(m);
527 dbus_message_unref(reply);
529 dbus_error_free(&error);
534 typedef struct WaitData {
539 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
547 dbus_error_init(&error);
549 /* log_debug("Got D-Bus request: %s.%s() on %s", */
550 /* dbus_message_get_interface(message), */
551 /* dbus_message_get_member(message), */
552 /* dbus_message_get_path(message)); */
554 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
555 log_error("Warning! D-Bus connection terminated.");
556 dbus_connection_close(connection);
558 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
561 dbus_bool_t success = true;
563 if (!dbus_message_get_args(message, &error,
564 DBUS_TYPE_UINT32, &id,
565 DBUS_TYPE_OBJECT_PATH, &path,
566 DBUS_TYPE_BOOLEAN, &success,
568 log_error("Failed to parse message: %s", error.message);
572 if ((p = set_remove(d->set, (char*) path)))
580 dbus_error_free(&error);
581 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
584 static int enable_wait_for_jobs(DBusConnection *bus) {
586 DBusMessage *m = NULL, *reply = NULL;
591 dbus_error_init(&error);
593 dbus_bus_add_match(bus,
595 "sender='org.freedesktop.systemd1',"
596 "interface='org.freedesktop.systemd1.Manager',"
597 "member='JobRemoved',"
598 "path='/org/freedesktop/systemd1'",
601 if (dbus_error_is_set(&error)) {
602 log_error("Failed to add match: %s", error.message);
607 if (!(m = dbus_message_new_method_call(
608 "org.freedesktop.systemd1",
609 "/org/freedesktop/systemd1",
610 "org.freedesktop.systemd1.Manager",
612 log_error("Could not allocate message.");
617 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
618 log_error("Failed to issue method call: %s", error.message);
626 /* This is slightly dirty, since we don't undo the match registrations. */
629 dbus_message_unref(m);
632 dbus_message_unref(reply);
634 dbus_error_free(&error);
639 static int wait_for_jobs(DBusConnection *bus, Set *s) {
650 if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
651 log_error("Failed to add filter.");
656 while (!set_isempty(s) &&
657 dbus_connection_read_write_dispatch(bus, -1))
660 if (!arg_quiet && d.failed)
661 log_error("Job failed, see logs for details.");
663 r = d.failed ? -EIO : 0;
666 /* This is slightly dirty, since we don't undo the filter registration. */
671 static int start_unit_one(
678 DBusMessage *m = NULL, *reply = NULL;
686 assert(arg_no_block || s);
688 dbus_error_init(&error);
690 if (!(m = dbus_message_new_method_call(
691 "org.freedesktop.systemd1",
692 "/org/freedesktop/systemd1",
693 "org.freedesktop.systemd1.Manager",
695 log_error("Could not allocate message.");
700 if (!dbus_message_append_args(m,
701 DBUS_TYPE_STRING, &name,
702 DBUS_TYPE_STRING, &mode,
703 DBUS_TYPE_INVALID)) {
704 log_error("Could not append arguments to message.");
709 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
711 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
712 /* There's always a fallback possible for
718 log_error("Failed to issue method call: %s", error.message);
727 if (!dbus_message_get_args(reply, &error,
728 DBUS_TYPE_OBJECT_PATH, &path,
729 DBUS_TYPE_INVALID)) {
730 log_error("Failed to parse reply: %s", error.message);
735 if (!(p = strdup(path))) {
736 log_error("Failed to duplicate path.");
741 if ((r = set_put(s, p)) < 0) {
743 log_error("Failed to add path to set.");
752 dbus_message_unref(m);
755 dbus_message_unref(reply);
757 dbus_error_free(&error);
762 static enum action verb_to_action(const char *verb) {
763 if (streq(verb, "halt"))
765 else if (streq(verb, "poweroff"))
766 return ACTION_POWEROFF;
767 else if (streq(verb, "reboot"))
768 return ACTION_REBOOT;
769 else if (streq(verb, "rescue"))
770 return ACTION_RESCUE;
771 else if (streq(verb, "emergency"))
772 return ACTION_EMERGENCY;
773 else if (streq(verb, "default"))
774 return ACTION_DEFAULT;
776 return ACTION_INVALID;
779 static int start_unit(DBusConnection *bus, char **args, unsigned n) {
781 static const char * const table[_ACTION_MAX] = {
782 [ACTION_HALT] = SPECIAL_HALT_TARGET,
783 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
784 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
785 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
786 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
787 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
788 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
789 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
790 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_SERVICE,
791 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET
796 const char *method, *mode, *one_name;
801 if (arg_action == ACTION_SYSTEMCTL) {
803 streq(args[0], "stop") ? "StopUnit" :
804 streq(args[0], "reload") ? "ReloadUnit" :
805 streq(args[0], "restart") ? "RestartUnit" :
809 (streq(args[0], "isolate") ||
810 streq(args[0], "rescue") ||
811 streq(args[0], "emergency")) ? "isolate" :
812 arg_replace ? "replace" :
815 one_name = table[verb_to_action(args[0])];
818 assert(arg_action < ELEMENTSOF(table));
819 assert(table[arg_action]);
821 method = "StartUnit";
823 mode = (arg_action == ACTION_EMERGENCY ||
824 arg_action == ACTION_RESCUE) ? "isolate" : "replace";
826 one_name = table[arg_action];
830 if ((r = enable_wait_for_jobs(bus)) < 0) {
831 log_error("Could not watch jobs: %s", strerror(-r));
835 if (!(s = set_new(string_hash_func, string_compare_func))) {
836 log_error("Failed to allocate set.");
845 if ((r = start_unit_one(bus, method, one_name, mode, s)) <= 0)
848 for (i = 1; i < n; i++)
849 if ((r = start_unit_one(bus, method, args[i], mode, s)) < 0)
854 r = wait_for_jobs(bus, s);
863 static int start_special(DBusConnection *bus, char **args, unsigned n) {
867 warn_wall(verb_to_action(args[0]));
869 return start_unit(bus, args, n);
872 static int check_unit(DBusConnection *bus, char **args, unsigned n) {
873 DBusMessage *m = NULL, *reply = NULL;
875 *interface = "org.freedesktop.systemd1.Unit",
876 *property = "ActiveState";
877 int r = -EADDRNOTAVAIL;
884 dbus_error_init(&error);
886 for (i = 1; i < n; i++) {
887 const char *path = NULL;
889 DBusMessageIter iter, sub;
891 if (!(m = dbus_message_new_method_call(
892 "org.freedesktop.systemd1",
893 "/org/freedesktop/systemd1",
894 "org.freedesktop.systemd1.Manager",
896 log_error("Could not allocate message.");
901 if (!dbus_message_append_args(m,
902 DBUS_TYPE_STRING, &args[i],
903 DBUS_TYPE_INVALID)) {
904 log_error("Could not append arguments to message.");
909 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
911 /* Hmm, cannot figure out anything about this unit... */
918 if (!dbus_message_get_args(reply, &error,
919 DBUS_TYPE_OBJECT_PATH, &path,
920 DBUS_TYPE_INVALID)) {
921 log_error("Failed to parse reply: %s", error.message);
926 dbus_message_unref(m);
927 if (!(m = dbus_message_new_method_call(
928 "org.freedesktop.systemd1",
930 "org.freedesktop.DBus.Properties",
932 log_error("Could not allocate message.");
937 if (!dbus_message_append_args(m,
938 DBUS_TYPE_STRING, &interface,
939 DBUS_TYPE_STRING, &property,
940 DBUS_TYPE_INVALID)) {
941 log_error("Could not append arguments to message.");
946 dbus_message_unref(reply);
947 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
948 log_error("Failed to issue method call: %s", error.message);
953 if (!dbus_message_iter_init(reply, &iter) ||
954 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
955 log_error("Failed to parse reply.");
960 dbus_message_iter_recurse(&iter, &sub);
962 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
963 log_error("Failed to parse reply.");
968 dbus_message_iter_get_basic(&sub, &state);
973 if (streq(state, "active") || startswith(state, "reloading"))
976 dbus_message_unref(m);
977 dbus_message_unref(reply);
983 dbus_message_unref(m);
986 dbus_message_unref(reply);
988 dbus_error_free(&error);
993 static int print_property(const char *name, DBusMessageIter *iter) {
997 if (arg_property && !streq(name, arg_property))
1000 switch (dbus_message_iter_get_arg_type(iter)) {
1002 case DBUS_TYPE_STRING: {
1004 dbus_message_iter_get_basic(iter, &s);
1006 if (arg_all || s[0])
1007 printf("%s=%s\n", name, s);
1012 case DBUS_TYPE_BOOLEAN: {
1014 dbus_message_iter_get_basic(iter, &b);
1015 printf("%s=%s\n", name, yes_no(b));
1020 case DBUS_TYPE_UINT64: {
1022 dbus_message_iter_get_basic(iter, &u);
1024 /* Yes, heuristics! But we can change this check
1025 * should it turn out to not be sufficient */
1027 if (strstr(name, "Timestamp")) {
1028 char timestamp[FORMAT_TIMESTAMP_MAX], *t;
1030 if ((t = format_timestamp(timestamp, sizeof(timestamp), u)) || arg_all)
1031 printf("%s=%s\n", name, strempty(t));
1033 printf("%s=%llu\n", name, (unsigned long long) u);
1038 case DBUS_TYPE_UINT32: {
1040 dbus_message_iter_get_basic(iter, &u);
1042 if (strstr(name, "UMask") || strstr(name, "Mode"))
1043 printf("%s=%04o\n", name, u);
1045 printf("%s=%u\n", name, (unsigned) u);
1050 case DBUS_TYPE_INT32: {
1052 dbus_message_iter_get_basic(iter, &i);
1054 printf("%s=%i\n", name, (int) i);
1058 case DBUS_TYPE_STRUCT: {
1059 DBusMessageIter sub;
1060 dbus_message_iter_recurse(iter, &sub);
1062 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
1065 dbus_message_iter_get_basic(&sub, &u);
1068 printf("%s=%u\n", name, (unsigned) u);
1070 printf("%s=\n", name);
1073 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
1076 dbus_message_iter_get_basic(&sub, &s);
1078 if (arg_all || s[0])
1079 printf("%s=%s\n", name, s);
1087 case DBUS_TYPE_ARRAY:
1089 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
1090 DBusMessageIter sub;
1093 dbus_message_iter_recurse(iter, &sub);
1096 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1097 printf("%s=", name);
1099 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1102 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
1103 dbus_message_iter_get_basic(&sub, &s);
1104 printf("%s%s", space ? " " : "", s);
1107 dbus_message_iter_next(&sub);
1114 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_BYTE) {
1115 DBusMessageIter sub;
1117 dbus_message_iter_recurse(iter, &sub);
1120 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1121 printf("%s=", name);
1123 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1126 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE);
1127 dbus_message_iter_get_basic(&sub, &u);
1130 dbus_message_iter_next(&sub);
1137 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
1138 DBusMessageIter sub, sub2;
1140 dbus_message_iter_recurse(iter, &sub);
1142 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1143 const char *type, *path;
1145 dbus_message_iter_recurse(&sub, &sub2);
1147 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
1148 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
1149 printf("%s=%s\n", type, path);
1151 dbus_message_iter_next(&sub);
1155 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
1156 DBusMessageIter sub, sub2;
1158 dbus_message_iter_recurse(iter, &sub);
1160 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1162 uint64_t value, next_elapse;
1164 dbus_message_iter_recurse(&sub, &sub2);
1166 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
1167 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
1168 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0)
1169 printf("%s=%llu\n", base, (unsigned long long) value);
1171 dbus_message_iter_next(&sub);
1181 printf("%s=[unprintable]\n", name);
1186 static int show_one(DBusConnection *bus, const char *path) {
1187 DBusMessage *m = NULL, *reply = NULL;
1188 const char *interface = "";
1191 DBusMessageIter iter, sub, sub2, sub3;
1196 dbus_error_init(&error);
1198 if (!(m = dbus_message_new_method_call(
1199 "org.freedesktop.systemd1",
1201 "org.freedesktop.DBus.Properties",
1203 log_error("Could not allocate message.");
1208 if (!dbus_message_append_args(m,
1209 DBUS_TYPE_STRING, &interface,
1210 DBUS_TYPE_INVALID)) {
1211 log_error("Could not append arguments to message.");
1216 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1217 log_error("Failed to issue method call: %s", error.message);
1222 if (!dbus_message_iter_init(reply, &iter) ||
1223 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1224 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
1225 log_error("Failed to parse reply.");
1230 dbus_message_iter_recurse(&iter, &sub);
1232 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1235 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
1236 log_error("Failed to parse reply.");
1241 dbus_message_iter_recurse(&sub, &sub2);
1243 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
1244 log_error("Failed to parse reply.");
1249 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
1250 log_error("Failed to parse reply.");
1255 dbus_message_iter_recurse(&sub2, &sub3);
1257 if (print_property(name, &sub3) < 0) {
1258 log_error("Failed to parse reply.");
1263 dbus_message_iter_next(&sub);
1270 dbus_message_unref(m);
1273 dbus_message_unref(reply);
1275 dbus_error_free(&error);
1280 static int show(DBusConnection *bus, char **args, unsigned n) {
1281 DBusMessage *m = NULL, *reply = NULL;
1289 dbus_error_init(&error);
1292 /* If not argument is specified inspect the manager
1295 r = show_one(bus, "/org/freedesktop/systemd1");
1299 for (i = 1; i < n; i++) {
1300 const char *path = NULL;
1303 if (safe_atou32(args[i], &id) < 0) {
1305 if (!(m = dbus_message_new_method_call(
1306 "org.freedesktop.systemd1",
1307 "/org/freedesktop/systemd1",
1308 "org.freedesktop.systemd1.Manager",
1310 log_error("Could not allocate message.");
1315 if (!dbus_message_append_args(m,
1316 DBUS_TYPE_STRING, &args[i],
1317 DBUS_TYPE_INVALID)) {
1318 log_error("Could not append arguments to message.");
1325 if (!(m = dbus_message_new_method_call(
1326 "org.freedesktop.systemd1",
1327 "/org/freedesktop/systemd1",
1328 "org.freedesktop.systemd1.Manager",
1330 log_error("Could not allocate message.");
1335 if (!dbus_message_append_args(m,
1336 DBUS_TYPE_UINT32, &id,
1337 DBUS_TYPE_INVALID)) {
1338 log_error("Could not append arguments to message.");
1344 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1345 log_error("Failed to issue method call: %s", error.message);
1350 if (!dbus_message_get_args(reply, &error,
1351 DBUS_TYPE_OBJECT_PATH, &path,
1352 DBUS_TYPE_INVALID)) {
1353 log_error("Failed to parse reply: %s", error.message);
1358 if ((r = show_one(bus, path)) < 0)
1361 dbus_message_unref(m);
1362 dbus_message_unref(reply);
1370 dbus_message_unref(m);
1373 dbus_message_unref(reply);
1375 dbus_error_free(&error);
1380 static DBusHandlerResult monitor_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1382 DBusMessage *m = NULL, *reply = NULL;
1387 dbus_error_init(&error);
1389 /* log_debug("Got D-Bus request: %s.%s() on %s", */
1390 /* dbus_message_get_interface(message), */
1391 /* dbus_message_get_member(message), */
1392 /* dbus_message_get_path(message)); */
1394 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1395 log_error("Warning! D-Bus connection terminated.");
1396 dbus_connection_close(connection);
1398 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitNew") ||
1399 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitRemoved")) {
1400 const char *id, *path;
1402 if (!dbus_message_get_args(message, &error,
1403 DBUS_TYPE_STRING, &id,
1404 DBUS_TYPE_OBJECT_PATH, &path,
1406 log_error("Failed to parse message: %s", error.message);
1407 else if (streq(dbus_message_get_member(message), "UnitNew"))
1408 printf("Unit %s added.\n", id);
1410 printf("Unit %s removed.\n", id);
1412 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobNew") ||
1413 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1417 if (!dbus_message_get_args(message, &error,
1418 DBUS_TYPE_UINT32, &id,
1419 DBUS_TYPE_OBJECT_PATH, &path,
1421 log_error("Failed to parse message: %s", error.message);
1422 else if (streq(dbus_message_get_member(message), "JobNew"))
1423 printf("Job %u added.\n", id);
1425 printf("Job %u removed.\n", id);
1428 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Unit", "Changed") ||
1429 dbus_message_is_signal(message, "org.freedesktop.systemd1.Job", "Changed")) {
1431 const char *path, *interface, *property = "Id";
1432 DBusMessageIter iter, sub;
1434 path = dbus_message_get_path(message);
1435 interface = dbus_message_get_interface(message);
1437 if (!(m = dbus_message_new_method_call(
1438 "org.freedesktop.systemd1",
1440 "org.freedesktop.DBus.Properties",
1442 log_error("Could not allocate message.");
1446 if (!dbus_message_append_args(m,
1447 DBUS_TYPE_STRING, &interface,
1448 DBUS_TYPE_STRING, &property,
1449 DBUS_TYPE_INVALID)) {
1450 log_error("Could not append arguments to message.");
1454 if (!(reply = dbus_connection_send_with_reply_and_block(connection, m, -1, &error))) {
1455 log_error("Failed to issue method call: %s", error.message);
1459 if (!dbus_message_iter_init(reply, &iter) ||
1460 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1461 log_error("Failed to parse reply.");
1465 dbus_message_iter_recurse(&iter, &sub);
1467 if (streq(interface, "org.freedesktop.systemd1.Unit")) {
1470 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1471 log_error("Failed to parse reply.");
1475 dbus_message_iter_get_basic(&sub, &id);
1476 printf("Unit %s changed.\n", id);
1480 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_UINT32) {
1481 log_error("Failed to parse reply.");
1485 dbus_message_iter_get_basic(&sub, &id);
1486 printf("Job %u changed.\n", id);
1492 dbus_message_unref(m);
1495 dbus_message_unref(reply);
1497 dbus_error_free(&error);
1498 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1502 dbus_message_unref(m);
1505 dbus_message_unref(reply);
1507 dbus_error_free(&error);
1508 return DBUS_HANDLER_RESULT_NEED_MEMORY;
1511 static int monitor(DBusConnection *bus, char **args, unsigned n) {
1512 DBusMessage *m = NULL, *reply = NULL;
1516 dbus_error_init(&error);
1518 dbus_bus_add_match(bus,
1520 "sender='org.freedesktop.systemd1',"
1521 "interface='org.freedesktop.systemd1.Manager',"
1522 "path='/org/freedesktop/systemd1'",
1525 if (dbus_error_is_set(&error)) {
1526 log_error("Failed to add match: %s", error.message);
1531 dbus_bus_add_match(bus,
1533 "sender='org.freedesktop.systemd1',"
1534 "interface='org.freedesktop.systemd1.Unit',"
1538 if (dbus_error_is_set(&error)) {
1539 log_error("Failed to add match: %s", error.message);
1544 dbus_bus_add_match(bus,
1546 "sender='org.freedesktop.systemd1',"
1547 "interface='org.freedesktop.systemd1.Job',"
1551 if (dbus_error_is_set(&error)) {
1552 log_error("Failed to add match: %s", error.message);
1557 if (!dbus_connection_add_filter(bus, monitor_filter, NULL, NULL)) {
1558 log_error("Failed to add filter.");
1563 if (!(m = dbus_message_new_method_call(
1564 "org.freedesktop.systemd1",
1565 "/org/freedesktop/systemd1",
1566 "org.freedesktop.systemd1.Manager",
1568 log_error("Could not allocate message.");
1573 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1574 log_error("Failed to issue method call: %s", error.message);
1579 while (dbus_connection_read_write_dispatch(bus, -1))
1586 /* This is slightly dirty, since we don't undo the filter or the matches. */
1589 dbus_message_unref(m);
1592 dbus_message_unref(reply);
1594 dbus_error_free(&error);
1599 static int dump(DBusConnection *bus, char **args, unsigned n) {
1600 DBusMessage *m = NULL, *reply = NULL;
1605 dbus_error_init(&error);
1607 if (!(m = dbus_message_new_method_call(
1608 "org.freedesktop.systemd1",
1609 "/org/freedesktop/systemd1",
1610 "org.freedesktop.systemd1.Manager",
1612 log_error("Could not allocate message.");
1616 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1617 log_error("Failed to issue method call: %s", error.message);
1622 if (!dbus_message_get_args(reply, &error,
1623 DBUS_TYPE_STRING, &text,
1624 DBUS_TYPE_INVALID)) {
1625 log_error("Failed to parse reply: %s", error.message);
1630 fputs(text, stdout);
1636 dbus_message_unref(m);
1639 dbus_message_unref(reply);
1641 dbus_error_free(&error);
1646 static int snapshot(DBusConnection *bus, char **args, unsigned n) {
1647 DBusMessage *m = NULL, *reply = NULL;
1650 const char *name = "", *path, *id;
1651 dbus_bool_t cleanup = FALSE;
1652 DBusMessageIter iter, sub;
1654 *interface = "org.freedesktop.systemd1.Unit",
1657 dbus_error_init(&error);
1659 if (!(m = dbus_message_new_method_call(
1660 "org.freedesktop.systemd1",
1661 "/org/freedesktop/systemd1",
1662 "org.freedesktop.systemd1.Manager",
1663 "CreateSnapshot"))) {
1664 log_error("Could not allocate message.");
1671 if (!dbus_message_append_args(m,
1672 DBUS_TYPE_STRING, &name,
1673 DBUS_TYPE_BOOLEAN, &cleanup,
1674 DBUS_TYPE_INVALID)) {
1675 log_error("Could not append arguments to message.");
1680 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1681 log_error("Failed to issue method call: %s", error.message);
1686 if (!dbus_message_get_args(reply, &error,
1687 DBUS_TYPE_OBJECT_PATH, &path,
1688 DBUS_TYPE_INVALID)) {
1689 log_error("Failed to parse reply: %s", error.message);
1694 dbus_message_unref(m);
1695 if (!(m = dbus_message_new_method_call(
1696 "org.freedesktop.systemd1",
1698 "org.freedesktop.DBus.Properties",
1700 log_error("Could not allocate message.");
1704 if (!dbus_message_append_args(m,
1705 DBUS_TYPE_STRING, &interface,
1706 DBUS_TYPE_STRING, &property,
1707 DBUS_TYPE_INVALID)) {
1708 log_error("Could not append arguments to message.");
1713 dbus_message_unref(reply);
1714 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1715 log_error("Failed to issue method call: %s", error.message);
1720 if (!dbus_message_iter_init(reply, &iter) ||
1721 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1722 log_error("Failed to parse reply.");
1727 dbus_message_iter_recurse(&iter, &sub);
1729 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1730 log_error("Failed to parse reply.");
1735 dbus_message_iter_get_basic(&sub, &id);
1743 dbus_message_unref(m);
1746 dbus_message_unref(reply);
1748 dbus_error_free(&error);
1753 static int delete_snapshot(DBusConnection *bus, char **args, unsigned n) {
1754 DBusMessage *m = NULL, *reply = NULL;
1762 dbus_error_init(&error);
1764 for (i = 1; i < n; i++) {
1765 const char *path = NULL;
1767 if (!(m = dbus_message_new_method_call(
1768 "org.freedesktop.systemd1",
1769 "/org/freedesktop/systemd1",
1770 "org.freedesktop.systemd1.Manager",
1772 log_error("Could not allocate message.");
1777 if (!dbus_message_append_args(m,
1778 DBUS_TYPE_STRING, &args[i],
1779 DBUS_TYPE_INVALID)) {
1780 log_error("Could not append arguments to message.");
1785 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1786 log_error("Failed to issue method call: %s", error.message);
1791 if (!dbus_message_get_args(reply, &error,
1792 DBUS_TYPE_OBJECT_PATH, &path,
1793 DBUS_TYPE_INVALID)) {
1794 log_error("Failed to parse reply: %s", error.message);
1799 dbus_message_unref(m);
1800 if (!(m = dbus_message_new_method_call(
1801 "org.freedesktop.systemd1",
1803 "org.freedesktop.systemd1.Snapshot",
1805 log_error("Could not allocate message.");
1810 dbus_message_unref(reply);
1811 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1812 log_error("Failed to issue method call: %s", error.message);
1817 dbus_message_unref(m);
1818 dbus_message_unref(reply);
1826 dbus_message_unref(m);
1829 dbus_message_unref(reply);
1831 dbus_error_free(&error);
1836 static int clear_jobs(DBusConnection *bus, char **args, unsigned n) {
1837 DBusMessage *m = NULL, *reply = NULL;
1842 dbus_error_init(&error);
1844 if (arg_action == ACTION_RELOAD)
1846 else if (arg_action == ACTION_REEXEC)
1847 method = "Reexecute";
1849 assert(arg_action == ACTION_SYSTEMCTL);
1852 streq(args[0], "clear-jobs") ? "ClearJobs" :
1853 streq(args[0], "daemon-reload") ? "Reload" :
1854 streq(args[0], "daemon-reexec") ? "Reexecute" :
1858 if (!(m = dbus_message_new_method_call(
1859 "org.freedesktop.systemd1",
1860 "/org/freedesktop/systemd1",
1861 "org.freedesktop.systemd1.Manager",
1863 log_error("Could not allocate message.");
1867 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1869 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
1870 /* There's always a fallback possible for
1871 * legacy actions. */
1876 log_error("Failed to issue method call: %s", error.message);
1885 dbus_message_unref(m);
1888 dbus_message_unref(reply);
1890 dbus_error_free(&error);
1895 static int show_enviroment(DBusConnection *bus, char **args, unsigned n) {
1896 DBusMessage *m = NULL, *reply = NULL;
1898 DBusMessageIter iter, sub, sub2;
1901 *interface = "org.freedesktop.systemd1.Manager",
1902 *property = "Environment";
1904 dbus_error_init(&error);
1906 if (!(m = dbus_message_new_method_call(
1907 "org.freedesktop.systemd1",
1908 "/org/freedesktop/systemd1",
1909 "org.freedesktop.DBus.Properties",
1911 log_error("Could not allocate message.");
1915 if (!dbus_message_append_args(m,
1916 DBUS_TYPE_STRING, &interface,
1917 DBUS_TYPE_STRING, &property,
1918 DBUS_TYPE_INVALID)) {
1919 log_error("Could not append arguments to message.");
1924 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1925 log_error("Failed to issue method call: %s", error.message);
1930 if (!dbus_message_iter_init(reply, &iter) ||
1931 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1932 log_error("Failed to parse reply.");
1937 dbus_message_iter_recurse(&iter, &sub);
1939 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
1940 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
1941 log_error("Failed to parse reply.");
1946 dbus_message_iter_recurse(&sub, &sub2);
1948 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
1951 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
1952 log_error("Failed to parse reply.");
1957 dbus_message_iter_get_basic(&sub2, &text);
1958 printf("%s\n", text);
1960 dbus_message_iter_next(&sub2);
1967 dbus_message_unref(m);
1970 dbus_message_unref(reply);
1972 dbus_error_free(&error);
1977 static int set_environment(DBusConnection *bus, char **args, unsigned n) {
1978 DBusMessage *m = NULL, *reply = NULL;
1982 DBusMessageIter iter, sub;
1985 dbus_error_init(&error);
1987 method = streq(args[0], "set-environment")
1989 : "UnsetEnvironment";
1991 if (!(m = dbus_message_new_method_call(
1992 "org.freedesktop.systemd1",
1993 "/org/freedesktop/systemd1",
1994 "org.freedesktop.systemd1.Manager",
1997 log_error("Could not allocate message.");
2001 dbus_message_iter_init_append(m, &iter);
2003 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
2004 log_error("Could not append arguments to message.");
2009 for (i = 1; i < n; i++)
2010 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &args[i])) {
2011 log_error("Could not append arguments to message.");
2016 if (!dbus_message_iter_close_container(&iter, &sub)) {
2017 log_error("Could not append arguments to message.");
2022 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2023 log_error("Failed to issue method call: %s", error.message);
2032 dbus_message_unref(m);
2035 dbus_message_unref(reply);
2037 dbus_error_free(&error);
2042 static int systemctl_help(void) {
2044 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
2045 "Send control commands to the systemd manager.\n\n"
2046 " -h --help Show this help\n"
2047 " -t --type=TYPE List only units of a particular type\n"
2048 " -p --property=NAME Show only property by this name\n"
2049 " -a --all Show all units/properties, including dead/empty ones\n"
2050 " --replace When installing a new job, replace existing conflicting ones\n"
2051 " --system Connect to system bus\n"
2052 " --session Connect to session bus\n"
2053 " -q --quiet Suppress output\n"
2054 " --no-block Do not wait until operation finished\n"
2055 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
2057 " list-units List units\n"
2058 " start [NAME...] Start one or more units\n"
2059 " stop [NAME...] Stop one or more units\n"
2060 " restart [NAME...] Restart one or more units\n"
2061 " reload [NAME...] Reload one or more units\n"
2062 " isolate [NAME] Start one unit and stop all others\n"
2063 " check [NAME...] Check whether any of the passed units are active\n"
2064 " show [NAME...|JOB...] Show information about one or more units\n"
2065 " load [NAME...] Load one or more units\n"
2066 " list-jobs List jobs\n"
2067 " cancel [JOB...] Cancel one or more jobs\n"
2068 " clear-jobs Cancel all jobs\n"
2069 " monitor Monitor unit/job changes\n"
2070 " dump Dump server status\n"
2071 " snapshot [NAME] Create a snapshot\n"
2072 " delete [NAME...] Remove one or more snapshots\n"
2073 " daemon-reload Reload systemd manager configuration\n"
2074 " daemon-reexec Reexecute systemd manager\n"
2075 " daemon-exit Ask the systemd manager to quit\n"
2076 " show-environment Dump environment\n"
2077 " set-environment [NAME=VALUE...] Set one or more environment variables\n"
2078 " unset-environment [NAME...] Unset one or more environment variables\n"
2079 " halt Shut down and halt the system\n"
2080 " poweroff Shut down and power-off the system\n"
2081 " reboot Shut down and reboot the system\n"
2082 " default Enter default mode\n"
2083 " rescue Enter rescue mode\n"
2084 " emergency Enter emergency mode\n",
2085 program_invocation_short_name);
2090 static int halt_help(void) {
2092 printf("%s [OPTIONS...]\n\n"
2093 "%s the system.\n\n"
2094 " --help Show this help\n"
2095 " --halt Halt the machine\n"
2096 " -p --poweroff Switch off the machine\n"
2097 " --reboot Reboot the machine\n"
2098 " -f --force Force immediate halt/power-off/reboot\n"
2099 " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
2100 " -d --no-wtmp Don't write wtmp record\n"
2101 " -n --no-sync Don't sync before halt/power-off/reboot\n"
2102 " --no-wall Don't send wall message before halt/power-off/reboot\n",
2103 program_invocation_short_name,
2104 arg_action == ACTION_REBOOT ? "Reboot" :
2105 arg_action == ACTION_POWEROFF ? "Power off" :
2111 static int shutdown_help(void) {
2113 printf("%s [OPTIONS...] [now] [WALL...]\n\n"
2114 "Shut down the system.\n\n"
2115 " --help Show this help\n"
2116 " -H --halt Halt the machine\n"
2117 " -P --poweroff Power-off the machine\n"
2118 " -r --reboot Reboot the machine\n"
2119 " -h Equivalent to --poweroff, overriden by --halt\n"
2120 " -k Don't halt/power-off/reboot, just send warnings\n"
2121 " --no-wall Don't send wall message before halt/power-off/reboot\n",
2122 program_invocation_short_name);
2127 static int telinit_help(void) {
2129 printf("%s [OPTIONS...] {COMMAND}\n\n"
2130 "Send control commands to the init daemon.\n\n"
2131 " --help Show this help\n"
2132 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
2134 " 0 Power-off the machine\n"
2135 " 6 Reboot the machine\n"
2136 " 2, 3, 4, 5 Start runlevelX.target unit\n"
2137 " 1, s, S Enter rescue mode\n"
2138 " q, Q Reload init daemon configuration\n"
2139 " u, U Reexecute init daemon\n",
2140 program_invocation_short_name);
2145 static int runlevel_help(void) {
2147 printf("%s [OPTIONS...]\n\n"
2148 "Prints the previous and current runlevel of the init system.\n\n"
2149 " --help Show this help\n",
2150 program_invocation_short_name);
2155 static int systemctl_parse_argv(int argc, char *argv[]) {
2158 ARG_REPLACE = 0x100,
2165 static const struct option options[] = {
2166 { "help", no_argument, NULL, 'h' },
2167 { "type", required_argument, NULL, 't' },
2168 { "property", required_argument, NULL, 'p' },
2169 { "all", no_argument, NULL, 'a' },
2170 { "replace", no_argument, NULL, ARG_REPLACE },
2171 { "session", no_argument, NULL, ARG_SESSION },
2172 { "system", no_argument, NULL, ARG_SYSTEM },
2173 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
2174 { "no-wall", no_argument, NULL, ARG_NO_WALL },
2175 { "quiet", no_argument, NULL, 'q' },
2176 { NULL, 0, NULL, 0 }
2184 while ((c = getopt_long(argc, argv, "ht:p:aq", options, NULL)) >= 0) {
2197 arg_property = optarg;
2199 /* If the user asked for a particular
2200 * property, show it to him, even if it is
2218 arg_session = false;
2222 arg_no_block = true;
2237 log_error("Unknown option code %c", c);
2245 static int halt_parse_argv(int argc, char *argv[]) {
2254 static const struct option options[] = {
2255 { "help", no_argument, NULL, ARG_HELP },
2256 { "halt", no_argument, NULL, ARG_HALT },
2257 { "poweroff", no_argument, NULL, 'p' },
2258 { "reboot", no_argument, NULL, ARG_REBOOT },
2259 { "force", no_argument, NULL, 'f' },
2260 { "wtmp-only", no_argument, NULL, 'w' },
2261 { "no-wtmp", no_argument, NULL, 'd' },
2262 { "no-sync", no_argument, NULL, 'n' },
2263 { "no-wall", no_argument, NULL, ARG_NO_WALL },
2264 { NULL, 0, NULL, 0 }
2272 if (utmp_get_runlevel(&runlevel, NULL) >= 0)
2273 if (runlevel == '0' || runlevel == '6')
2274 arg_immediate = true;
2276 while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
2284 arg_action = ACTION_HALT;
2288 arg_action = ACTION_POWEROFF;
2292 arg_action = ACTION_REBOOT;
2296 arg_immediate = true;
2317 /* Compatibility nops */
2324 log_error("Unknown option code %c", c);
2329 if (optind < argc) {
2330 log_error("Too many arguments.");
2337 static int shutdown_parse_argv(int argc, char *argv[]) {
2344 static const struct option options[] = {
2345 { "help", no_argument, NULL, ARG_HELP },
2346 { "halt", no_argument, NULL, 'H' },
2347 { "poweroff", no_argument, NULL, 'P' },
2348 { "reboot", no_argument, NULL, 'r' },
2349 { "no-wall", no_argument, NULL, ARG_NO_WALL },
2350 { NULL, 0, NULL, 0 }
2358 while ((c = getopt_long(argc, argv, "HPrhkt:a", options, NULL)) >= 0) {
2366 arg_action = ACTION_HALT;
2370 arg_action = ACTION_POWEROFF;
2374 arg_action = ACTION_REBOOT;
2378 if (arg_action != ACTION_HALT)
2379 arg_action = ACTION_POWEROFF;
2392 /* Compatibility nops */
2399 log_error("Unknown option code %c", c);
2404 if (argc > optind && !streq(argv[optind], "now"))
2405 log_warning("First argument '%s' isn't 'now'. Ignoring.", argv[optind]);
2407 /* We ignore the time argument */
2408 if (argc > optind + 1)
2409 arg_wall = argv + optind + 1;
2416 static int telinit_parse_argv(int argc, char *argv[]) {
2423 static const struct option options[] = {
2424 { "help", no_argument, NULL, ARG_HELP },
2425 { "no-wall", no_argument, NULL, ARG_NO_WALL },
2426 { NULL, 0, NULL, 0 }
2429 static const struct {
2433 { '0', ACTION_POWEROFF },
2434 { '6', ACTION_REBOOT },
2435 { '1', ACTION_RESCUE },
2436 { '2', ACTION_RUNLEVEL2 },
2437 { '3', ACTION_RUNLEVEL3 },
2438 { '4', ACTION_RUNLEVEL4 },
2439 { '5', ACTION_RUNLEVEL5 },
2440 { 's', ACTION_RESCUE },
2441 { 'S', ACTION_RESCUE },
2442 { 'q', ACTION_RELOAD },
2443 { 'Q', ACTION_RELOAD },
2444 { 'u', ACTION_REEXEC },
2445 { 'U', ACTION_REEXEC }
2454 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
2469 log_error("Unknown option code %c", c);
2474 if (optind >= argc) {
2479 if (optind + 1 < argc) {
2480 log_error("Too many arguments.");
2484 if (strlen(argv[optind]) != 1) {
2485 log_error("Expected single character argument.");
2489 for (i = 0; i < ELEMENTSOF(table); i++)
2490 if (table[i].from == argv[optind][0])
2493 if (i >= ELEMENTSOF(table)) {
2494 log_error("Unknown command %s.", argv[optind]);
2498 arg_action = table[i].to;
2505 static int runlevel_parse_argv(int argc, char *argv[]) {
2511 static const struct option options[] = {
2512 { "help", no_argument, NULL, ARG_HELP },
2513 { NULL, 0, NULL, 0 }
2521 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
2532 log_error("Unknown option code %c", c);
2537 if (optind < argc) {
2538 log_error("Too many arguments.");
2545 static int parse_argv(int argc, char *argv[]) {
2549 if (program_invocation_short_name) {
2551 if (strstr(program_invocation_short_name, "halt")) {
2552 arg_action = ACTION_HALT;
2553 return halt_parse_argv(argc, argv);
2554 } else if (strstr(program_invocation_short_name, "poweroff")) {
2555 arg_action = ACTION_POWEROFF;
2556 return halt_parse_argv(argc, argv);
2557 } else if (strstr(program_invocation_short_name, "reboot")) {
2558 arg_action = ACTION_REBOOT;
2559 return halt_parse_argv(argc, argv);
2560 } else if (strstr(program_invocation_short_name, "shutdown")) {
2561 arg_action = ACTION_POWEROFF;
2562 return shutdown_parse_argv(argc, argv);
2563 } else if (strstr(program_invocation_short_name, "init")) {
2564 arg_action = ACTION_INVALID;
2565 return telinit_parse_argv(argc, argv);
2566 } else if (strstr(program_invocation_short_name, "runlevel")) {
2567 arg_action = ACTION_RUNLEVEL;
2568 return runlevel_parse_argv(argc, argv);
2572 arg_action = ACTION_SYSTEMCTL;
2573 return systemctl_parse_argv(argc, argv);
2576 static int action_to_runlevel(void) {
2578 static const char table[_ACTION_MAX] = {
2579 [ACTION_HALT] = '0',
2580 [ACTION_POWEROFF] = '0',
2581 [ACTION_REBOOT] = '6',
2582 [ACTION_RUNLEVEL2] = '2',
2583 [ACTION_RUNLEVEL3] = '3',
2584 [ACTION_RUNLEVEL4] = '4',
2585 [ACTION_RUNLEVEL5] = '5',
2586 [ACTION_RESCUE] = '1'
2589 assert(arg_action < _ACTION_MAX);
2591 return table[arg_action];
2594 static int talk_upstart(void) {
2595 DBusMessage *m = NULL, *reply = NULL;
2597 int previous, rl, r;
2599 env1_buf[] = "RUNLEVEL=X",
2600 env2_buf[] = "PREVLEVEL=X";
2601 char *env1 = env1_buf, *env2 = env2_buf;
2602 const char *emit = "runlevel";
2603 dbus_bool_t b_false = FALSE;
2604 DBusMessageIter iter, sub;
2605 DBusConnection *bus;
2607 dbus_error_init(&error);
2609 if (!(rl = action_to_runlevel()))
2612 if (utmp_get_runlevel(&previous, NULL) < 0)
2615 if (!(bus = dbus_connection_open("unix:abstract=/com/ubuntu/upstart", &error))) {
2616 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
2621 log_error("Failed to connect to Upstart bus: %s", error.message);
2626 if ((r = bus_check_peercred(bus)) < 0) {
2627 log_error("Failed to verify owner of bus.");
2631 if (!(m = dbus_message_new_method_call(
2632 "com.ubuntu.Upstart",
2633 "/com/ubuntu/Upstart",
2634 "com.ubuntu.Upstart0_6",
2637 log_error("Could not allocate message.");
2642 dbus_message_iter_init_append(m, &iter);
2644 env1_buf[sizeof(env1_buf)-2] = rl;
2645 env2_buf[sizeof(env2_buf)-2] = previous;
2647 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
2648 !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
2649 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
2650 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
2651 !dbus_message_iter_close_container(&iter, &sub) ||
2652 !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
2653 log_error("Could not append arguments to message.");
2658 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2660 if (error_is_no_service(&error)) {
2665 log_error("Failed to issue method call: %s", error.message);
2674 dbus_message_unref(m);
2677 dbus_message_unref(reply);
2680 dbus_connection_unref(bus);
2682 dbus_error_free(&error);
2687 static int talk_initctl(void) {
2688 struct init_request request;
2692 if (!(rl = action_to_runlevel()))
2696 request.magic = INIT_MAGIC;
2697 request.sleeptime = 0;
2698 request.cmd = INIT_CMD_RUNLVL;
2699 request.runlevel = rl;
2701 if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
2703 if (errno == ENOENT)
2706 log_error("Failed to open "INIT_FIFO": %m");
2711 r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
2712 close_nointr_nofail(fd);
2715 log_error("Failed to write to "INIT_FIFO": %m");
2716 return errno ? -errno : -EIO;
2722 static int systemctl_main(DBusConnection *bus, int argc, char *argv[]) {
2724 static const struct {
2732 int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
2734 { "list-units", LESS, 1, list_units },
2735 { "list-jobs", EQUAL, 1, list_jobs },
2736 { "clear-jobs", EQUAL, 1, clear_jobs },
2737 { "load", MORE, 2, load_unit },
2738 { "cancel", MORE, 2, cancel_job },
2739 { "start", MORE, 2, start_unit },
2740 { "stop", MORE, 2, start_unit },
2741 { "reload", MORE, 2, start_unit },
2742 { "restart", MORE, 2, start_unit },
2743 { "isolate", EQUAL, 2, start_unit },
2744 { "check", MORE, 2, check_unit },
2745 { "show", MORE, 1, show },
2746 { "monitor", EQUAL, 1, monitor },
2747 { "dump", EQUAL, 1, dump },
2748 { "snapshot", LESS, 2, snapshot },
2749 { "delete", MORE, 2, delete_snapshot },
2750 { "daemon-reload", EQUAL, 1, clear_jobs },
2751 { "daemon-reexec", EQUAL, 1, clear_jobs },
2752 { "daemon-exit", EQUAL, 1, clear_jobs },
2753 { "show-environment", EQUAL, 1, show_enviroment },
2754 { "set-environment", MORE, 2, set_environment },
2755 { "unset-environment", MORE, 2, set_environment },
2756 { "halt", EQUAL, 1, start_special },
2757 { "poweroff", EQUAL, 1, start_special },
2758 { "reboot", EQUAL, 1, start_special },
2759 { "default", EQUAL, 1, start_special },
2760 { "rescue", EQUAL, 1, start_special },
2761 { "emergency", EQUAL, 1, start_special },
2771 left = argc - optind;
2774 /* Special rule: no arguments means "list-units" */
2777 if (streq(argv[optind], "help")) {
2782 for (i = 0; i < ELEMENTSOF(verbs); i++)
2783 if (streq(argv[optind], verbs[i].verb))
2786 if (i >= ELEMENTSOF(verbs)) {
2787 log_error("Unknown operation %s", argv[optind]);
2792 switch (verbs[i].argc_cmp) {
2795 if (left != verbs[i].argc) {
2796 log_error("Invalid number of arguments.");
2803 if (left < verbs[i].argc) {
2804 log_error("Too few arguments.");
2811 if (left > verbs[i].argc) {
2812 log_error("Too many arguments.");
2819 assert_not_reached("Unknown comparison operator.");
2822 return verbs[i].dispatch(bus, argv + optind, left);
2825 static int reload_with_fallback(DBusConnection *bus) {
2829 /* First, try systemd via D-Bus. */
2830 if ((r = clear_jobs(bus, NULL, 0)) > 0)
2834 /* Nothing else worked, so let's try signals */
2835 assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
2837 if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
2838 log_error("kill() failed: %m");
2845 static int start_with_fallback(DBusConnection *bus) {
2848 warn_wall(arg_action);
2851 /* First, try systemd via D-Bus. */
2852 if ((r = start_unit(bus, NULL, 0)) > 0)
2855 /* Hmm, talking to systemd via D-Bus didn't work. Then
2856 * let's try to talk to Upstart via D-Bus. */
2857 if ((r = talk_upstart()) > 0)
2861 /* Nothing else worked, so let's try
2863 if ((r = talk_initctl()) != 0)
2866 log_error("Failed to talk to init daemon.");
2870 static int halt_main(DBusConnection *bus) {
2874 return start_with_fallback(bus);
2877 if ((r = utmp_put_shutdown(0)) < 0)
2878 log_warning("Failed to write utmp record: %s", strerror(-r));
2886 /* Make sure C-A-D is handled by the kernel from this
2888 reboot(RB_ENABLE_CAD);
2890 switch (arg_action) {
2893 log_info("Halting");
2894 reboot(RB_HALT_SYSTEM);
2897 case ACTION_POWEROFF:
2898 log_info("Powering off");
2899 reboot(RB_POWER_OFF);
2903 log_info("Rebooting");
2904 reboot(RB_AUTOBOOT);
2908 assert_not_reached("Unknown halt action.");
2911 /* We should never reach this. */
2915 static int runlevel_main(void) {
2916 int r, runlevel, previous;
2918 if ((r = utmp_get_runlevel(&runlevel, &previous)) < 0) {
2924 previous <= 0 ? 'N' : previous,
2925 runlevel <= 0 ? 'N' : runlevel);
2930 int main(int argc, char*argv[]) {
2932 DBusConnection *bus = NULL;
2935 dbus_error_init(&error);
2937 log_parse_environment();
2939 if ((r = parse_argv(argc, argv)) < 0)
2946 /* /sbin/runlevel doesn't need to communicate via D-Bus, so
2947 * let's shortcut this */
2948 if (arg_action == ACTION_RUNLEVEL) {
2949 retval = runlevel_main() < 0;
2953 /* If we are root, then let's not go via the bus */
2954 if (geteuid() == 0 && !arg_session) {
2955 bus = dbus_connection_open("unix:abstract=/org/freedesktop/systemd1/private", &error);
2957 if (bus && bus_check_peercred(bus) < 0) {
2958 log_error("Failed to verify owner of bus.");
2962 bus = dbus_bus_get(arg_session ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &error);
2965 dbus_connection_set_exit_on_disconnect(bus, FALSE);
2967 switch (arg_action) {
2969 case ACTION_SYSTEMCTL: {
2972 log_error("Failed to get D-Bus connection: %s", error.message);
2976 retval = systemctl_main(bus, argc, argv) < 0;
2981 case ACTION_POWEROFF:
2983 retval = halt_main(bus) < 0;
2986 case ACTION_RUNLEVEL2:
2987 case ACTION_RUNLEVEL3:
2988 case ACTION_RUNLEVEL4:
2989 case ACTION_RUNLEVEL5:
2991 case ACTION_EMERGENCY:
2992 case ACTION_DEFAULT:
2993 retval = start_with_fallback(bus) < 0;
2998 retval = reload_with_fallback(bus) < 0;
3001 case ACTION_INVALID:
3002 case ACTION_RUNLEVEL:
3004 assert_not_reached("Unknown action");
3010 dbus_connection_unref(bus);
3012 dbus_error_free(&error);