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"))
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);
1115 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
1116 DBusMessageIter sub, sub2;
1118 dbus_message_iter_recurse(iter, &sub);
1120 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1121 const char *type, *path;
1123 dbus_message_iter_recurse(&sub, &sub2);
1125 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
1126 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
1127 printf("%s=%s\n", type, path);
1129 dbus_message_iter_next(&sub);
1139 printf("%s=[unprintable]\n", name);
1144 static int show_one(DBusConnection *bus, const char *path) {
1145 DBusMessage *m = NULL, *reply = NULL;
1146 const char *interface = "";
1149 DBusMessageIter iter, sub, sub2, sub3;
1154 dbus_error_init(&error);
1156 if (!(m = dbus_message_new_method_call(
1157 "org.freedesktop.systemd1",
1159 "org.freedesktop.DBus.Properties",
1161 log_error("Could not allocate message.");
1166 if (!dbus_message_append_args(m,
1167 DBUS_TYPE_STRING, &interface,
1168 DBUS_TYPE_INVALID)) {
1169 log_error("Could not append arguments to message.");
1174 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1175 log_error("Failed to issue method call: %s", error.message);
1180 if (!dbus_message_iter_init(reply, &iter) ||
1181 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1182 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
1183 log_error("Failed to parse reply.");
1188 dbus_message_iter_recurse(&iter, &sub);
1190 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1193 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
1194 log_error("Failed to parse reply.");
1199 dbus_message_iter_recurse(&sub, &sub2);
1201 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
1202 log_error("Failed to parse reply.");
1207 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
1208 log_error("Failed to parse reply.");
1213 dbus_message_iter_recurse(&sub2, &sub3);
1215 if (print_property(name, &sub3) < 0) {
1216 log_error("Failed to parse reply.");
1221 dbus_message_iter_next(&sub);
1228 dbus_message_unref(m);
1231 dbus_message_unref(reply);
1233 dbus_error_free(&error);
1238 static int show(DBusConnection *bus, char **args, unsigned n) {
1239 DBusMessage *m = NULL, *reply = NULL;
1247 dbus_error_init(&error);
1250 /* If not argument is specified inspect the manager
1253 r = show_one(bus, "/org/freedesktop/systemd1");
1257 for (i = 1; i < n; i++) {
1258 const char *path = NULL;
1261 if (safe_atou32(args[i], &id) < 0) {
1263 if (!(m = dbus_message_new_method_call(
1264 "org.freedesktop.systemd1",
1265 "/org/freedesktop/systemd1",
1266 "org.freedesktop.systemd1.Manager",
1268 log_error("Could not allocate message.");
1273 if (!dbus_message_append_args(m,
1274 DBUS_TYPE_STRING, &args[i],
1275 DBUS_TYPE_INVALID)) {
1276 log_error("Could not append arguments to message.");
1283 if (!(m = dbus_message_new_method_call(
1284 "org.freedesktop.systemd1",
1285 "/org/freedesktop/systemd1",
1286 "org.freedesktop.systemd1.Manager",
1288 log_error("Could not allocate message.");
1293 if (!dbus_message_append_args(m,
1294 DBUS_TYPE_UINT32, &id,
1295 DBUS_TYPE_INVALID)) {
1296 log_error("Could not append arguments to message.");
1302 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1303 log_error("Failed to issue method call: %s", error.message);
1308 if (!dbus_message_get_args(reply, &error,
1309 DBUS_TYPE_OBJECT_PATH, &path,
1310 DBUS_TYPE_INVALID)) {
1311 log_error("Failed to parse reply: %s", error.message);
1316 if ((r = show_one(bus, path)) < 0)
1319 dbus_message_unref(m);
1320 dbus_message_unref(reply);
1328 dbus_message_unref(m);
1331 dbus_message_unref(reply);
1333 dbus_error_free(&error);
1338 static DBusHandlerResult monitor_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1340 DBusMessage *m = NULL, *reply = NULL;
1345 dbus_error_init(&error);
1347 /* log_debug("Got D-Bus request: %s.%s() on %s", */
1348 /* dbus_message_get_interface(message), */
1349 /* dbus_message_get_member(message), */
1350 /* dbus_message_get_path(message)); */
1352 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1353 log_error("Warning! D-Bus connection terminated.");
1354 dbus_connection_close(connection);
1356 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitNew") ||
1357 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitRemoved")) {
1358 const char *id, *path;
1360 if (!dbus_message_get_args(message, &error,
1361 DBUS_TYPE_STRING, &id,
1362 DBUS_TYPE_OBJECT_PATH, &path,
1364 log_error("Failed to parse message: %s", error.message);
1365 else if (streq(dbus_message_get_member(message), "UnitNew"))
1366 printf("Unit %s added.\n", id);
1368 printf("Unit %s removed.\n", id);
1370 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobNew") ||
1371 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1375 if (!dbus_message_get_args(message, &error,
1376 DBUS_TYPE_UINT32, &id,
1377 DBUS_TYPE_OBJECT_PATH, &path,
1379 log_error("Failed to parse message: %s", error.message);
1380 else if (streq(dbus_message_get_member(message), "JobNew"))
1381 printf("Job %u added.\n", id);
1383 printf("Job %u removed.\n", id);
1386 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Unit", "Changed") ||
1387 dbus_message_is_signal(message, "org.freedesktop.systemd1.Job", "Changed")) {
1389 const char *path, *interface, *property = "Id";
1390 DBusMessageIter iter, sub;
1392 path = dbus_message_get_path(message);
1393 interface = dbus_message_get_interface(message);
1395 if (!(m = dbus_message_new_method_call(
1396 "org.freedesktop.systemd1",
1398 "org.freedesktop.DBus.Properties",
1400 log_error("Could not allocate message.");
1404 if (!dbus_message_append_args(m,
1405 DBUS_TYPE_STRING, &interface,
1406 DBUS_TYPE_STRING, &property,
1407 DBUS_TYPE_INVALID)) {
1408 log_error("Could not append arguments to message.");
1412 if (!(reply = dbus_connection_send_with_reply_and_block(connection, m, -1, &error))) {
1413 log_error("Failed to issue method call: %s", error.message);
1417 if (!dbus_message_iter_init(reply, &iter) ||
1418 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1419 log_error("Failed to parse reply.");
1423 dbus_message_iter_recurse(&iter, &sub);
1425 if (streq(interface, "org.freedesktop.systemd1.Unit")) {
1428 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1429 log_error("Failed to parse reply.");
1433 dbus_message_iter_get_basic(&sub, &id);
1434 printf("Unit %s changed.\n", id);
1438 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_UINT32) {
1439 log_error("Failed to parse reply.");
1443 dbus_message_iter_get_basic(&sub, &id);
1444 printf("Job %u changed.\n", id);
1450 dbus_message_unref(m);
1453 dbus_message_unref(reply);
1455 dbus_error_free(&error);
1456 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1460 dbus_message_unref(m);
1463 dbus_message_unref(reply);
1465 dbus_error_free(&error);
1466 return DBUS_HANDLER_RESULT_NEED_MEMORY;
1469 static int monitor(DBusConnection *bus, char **args, unsigned n) {
1470 DBusMessage *m = NULL, *reply = NULL;
1474 dbus_error_init(&error);
1476 dbus_bus_add_match(bus,
1478 "sender='org.freedesktop.systemd1',"
1479 "interface='org.freedesktop.systemd1.Manager',"
1480 "path='/org/freedesktop/systemd1'",
1483 if (dbus_error_is_set(&error)) {
1484 log_error("Failed to add match: %s", error.message);
1489 dbus_bus_add_match(bus,
1491 "sender='org.freedesktop.systemd1',"
1492 "interface='org.freedesktop.systemd1.Unit',"
1496 if (dbus_error_is_set(&error)) {
1497 log_error("Failed to add match: %s", error.message);
1502 dbus_bus_add_match(bus,
1504 "sender='org.freedesktop.systemd1',"
1505 "interface='org.freedesktop.systemd1.Job',"
1509 if (dbus_error_is_set(&error)) {
1510 log_error("Failed to add match: %s", error.message);
1515 if (!dbus_connection_add_filter(bus, monitor_filter, NULL, NULL)) {
1516 log_error("Failed to add filter.");
1521 if (!(m = dbus_message_new_method_call(
1522 "org.freedesktop.systemd1",
1523 "/org/freedesktop/systemd1",
1524 "org.freedesktop.systemd1.Manager",
1526 log_error("Could not allocate message.");
1531 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1532 log_error("Failed to issue method call: %s", error.message);
1537 while (dbus_connection_read_write_dispatch(bus, -1))
1544 /* This is slightly dirty, since we don't undo the filter or the matches. */
1547 dbus_message_unref(m);
1550 dbus_message_unref(reply);
1552 dbus_error_free(&error);
1557 static int dump(DBusConnection *bus, char **args, unsigned n) {
1558 DBusMessage *m = NULL, *reply = NULL;
1563 dbus_error_init(&error);
1565 if (!(m = dbus_message_new_method_call(
1566 "org.freedesktop.systemd1",
1567 "/org/freedesktop/systemd1",
1568 "org.freedesktop.systemd1.Manager",
1570 log_error("Could not allocate message.");
1574 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1575 log_error("Failed to issue method call: %s", error.message);
1580 if (!dbus_message_get_args(reply, &error,
1581 DBUS_TYPE_STRING, &text,
1582 DBUS_TYPE_INVALID)) {
1583 log_error("Failed to parse reply: %s", error.message);
1588 fputs(text, stdout);
1594 dbus_message_unref(m);
1597 dbus_message_unref(reply);
1599 dbus_error_free(&error);
1604 static int snapshot(DBusConnection *bus, char **args, unsigned n) {
1605 DBusMessage *m = NULL, *reply = NULL;
1608 const char *name = "", *path, *id;
1609 dbus_bool_t cleanup = FALSE;
1610 DBusMessageIter iter, sub;
1612 *interface = "org.freedesktop.systemd1.Unit",
1615 dbus_error_init(&error);
1617 if (!(m = dbus_message_new_method_call(
1618 "org.freedesktop.systemd1",
1619 "/org/freedesktop/systemd1",
1620 "org.freedesktop.systemd1.Manager",
1621 "CreateSnapshot"))) {
1622 log_error("Could not allocate message.");
1629 if (!dbus_message_append_args(m,
1630 DBUS_TYPE_STRING, &name,
1631 DBUS_TYPE_BOOLEAN, &cleanup,
1632 DBUS_TYPE_INVALID)) {
1633 log_error("Could not append arguments to message.");
1638 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1639 log_error("Failed to issue method call: %s", error.message);
1644 if (!dbus_message_get_args(reply, &error,
1645 DBUS_TYPE_OBJECT_PATH, &path,
1646 DBUS_TYPE_INVALID)) {
1647 log_error("Failed to parse reply: %s", error.message);
1652 dbus_message_unref(m);
1653 if (!(m = dbus_message_new_method_call(
1654 "org.freedesktop.systemd1",
1656 "org.freedesktop.DBus.Properties",
1658 log_error("Could not allocate message.");
1662 if (!dbus_message_append_args(m,
1663 DBUS_TYPE_STRING, &interface,
1664 DBUS_TYPE_STRING, &property,
1665 DBUS_TYPE_INVALID)) {
1666 log_error("Could not append arguments to message.");
1671 dbus_message_unref(reply);
1672 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1673 log_error("Failed to issue method call: %s", error.message);
1678 if (!dbus_message_iter_init(reply, &iter) ||
1679 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1680 log_error("Failed to parse reply.");
1685 dbus_message_iter_recurse(&iter, &sub);
1687 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1688 log_error("Failed to parse reply.");
1693 dbus_message_iter_get_basic(&sub, &id);
1701 dbus_message_unref(m);
1704 dbus_message_unref(reply);
1706 dbus_error_free(&error);
1711 static int delete_snapshot(DBusConnection *bus, char **args, unsigned n) {
1712 DBusMessage *m = NULL, *reply = NULL;
1720 dbus_error_init(&error);
1722 for (i = 1; i < n; i++) {
1723 const char *path = NULL;
1725 if (!(m = dbus_message_new_method_call(
1726 "org.freedesktop.systemd1",
1727 "/org/freedesktop/systemd1",
1728 "org.freedesktop.systemd1.Manager",
1730 log_error("Could not allocate message.");
1735 if (!dbus_message_append_args(m,
1736 DBUS_TYPE_STRING, &args[i],
1737 DBUS_TYPE_INVALID)) {
1738 log_error("Could not append arguments to message.");
1743 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1744 log_error("Failed to issue method call: %s", error.message);
1749 if (!dbus_message_get_args(reply, &error,
1750 DBUS_TYPE_OBJECT_PATH, &path,
1751 DBUS_TYPE_INVALID)) {
1752 log_error("Failed to parse reply: %s", error.message);
1757 dbus_message_unref(m);
1758 if (!(m = dbus_message_new_method_call(
1759 "org.freedesktop.systemd1",
1761 "org.freedesktop.systemd1.Snapshot",
1763 log_error("Could not allocate message.");
1768 dbus_message_unref(reply);
1769 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1770 log_error("Failed to issue method call: %s", error.message);
1775 dbus_message_unref(m);
1776 dbus_message_unref(reply);
1784 dbus_message_unref(m);
1787 dbus_message_unref(reply);
1789 dbus_error_free(&error);
1794 static int clear_jobs(DBusConnection *bus, char **args, unsigned n) {
1795 DBusMessage *m = NULL, *reply = NULL;
1800 dbus_error_init(&error);
1802 if (arg_action == ACTION_RELOAD)
1804 else if (arg_action == ACTION_REEXEC)
1805 method = "Reexecute";
1807 assert(arg_action == ACTION_SYSTEMCTL);
1810 streq(args[0], "clear-jobs") ? "ClearJobs" :
1811 streq(args[0], "daemon-reload") ? "Reload" :
1812 streq(args[0], "daemon-reexec") ? "Reexecute" :
1816 if (!(m = dbus_message_new_method_call(
1817 "org.freedesktop.systemd1",
1818 "/org/freedesktop/systemd1",
1819 "org.freedesktop.systemd1.Manager",
1821 log_error("Could not allocate message.");
1825 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1827 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
1828 /* There's always a fallback possible for
1829 * legacy actions. */
1834 log_error("Failed to issue method call: %s", error.message);
1843 dbus_message_unref(m);
1846 dbus_message_unref(reply);
1848 dbus_error_free(&error);
1853 static int show_enviroment(DBusConnection *bus, char **args, unsigned n) {
1854 DBusMessage *m = NULL, *reply = NULL;
1856 DBusMessageIter iter, sub, sub2;
1859 *interface = "org.freedesktop.systemd1.Manager",
1860 *property = "Environment";
1862 dbus_error_init(&error);
1864 if (!(m = dbus_message_new_method_call(
1865 "org.freedesktop.systemd1",
1866 "/org/freedesktop/systemd1",
1867 "org.freedesktop.DBus.Properties",
1869 log_error("Could not allocate message.");
1873 if (!dbus_message_append_args(m,
1874 DBUS_TYPE_STRING, &interface,
1875 DBUS_TYPE_STRING, &property,
1876 DBUS_TYPE_INVALID)) {
1877 log_error("Could not append arguments to message.");
1882 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1883 log_error("Failed to issue method call: %s", error.message);
1888 if (!dbus_message_iter_init(reply, &iter) ||
1889 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1890 log_error("Failed to parse reply.");
1895 dbus_message_iter_recurse(&iter, &sub);
1897 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
1898 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
1899 log_error("Failed to parse reply.");
1904 dbus_message_iter_recurse(&sub, &sub2);
1906 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
1909 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
1910 log_error("Failed to parse reply.");
1915 dbus_message_iter_get_basic(&sub2, &text);
1916 printf("%s\n", text);
1918 dbus_message_iter_next(&sub2);
1925 dbus_message_unref(m);
1928 dbus_message_unref(reply);
1930 dbus_error_free(&error);
1935 static int set_environment(DBusConnection *bus, char **args, unsigned n) {
1936 DBusMessage *m = NULL, *reply = NULL;
1940 DBusMessageIter iter, sub;
1943 dbus_error_init(&error);
1945 method = streq(args[0], "set-environment")
1947 : "UnsetEnvironment";
1949 if (!(m = dbus_message_new_method_call(
1950 "org.freedesktop.systemd1",
1951 "/org/freedesktop/systemd1",
1952 "org.freedesktop.systemd1.Manager",
1955 log_error("Could not allocate message.");
1959 dbus_message_iter_init_append(m, &iter);
1961 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
1962 log_error("Could not append arguments to message.");
1967 for (i = 1; i < n; i++)
1968 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &args[i])) {
1969 log_error("Could not append arguments to message.");
1974 if (!dbus_message_iter_close_container(&iter, &sub)) {
1975 log_error("Could not append arguments to message.");
1980 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1981 log_error("Failed to issue method call: %s", error.message);
1990 dbus_message_unref(m);
1993 dbus_message_unref(reply);
1995 dbus_error_free(&error);
2000 static int systemctl_help(void) {
2002 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
2003 "Send control commands to the systemd manager.\n\n"
2004 " -h --help Show this help\n"
2005 " -t --type=TYPE List only units of a particular type\n"
2006 " -p --property=NAME Show only property by this name\n"
2007 " -a --all Show all units/properties, including dead/empty ones\n"
2008 " --replace When installing a new job, replace existing conflicting ones\n"
2009 " --system Connect to system bus\n"
2010 " --session Connect to session bus\n"
2011 " -q --quiet Suppress output\n"
2012 " --no-block Do not wait until operation finished\n"
2013 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
2015 " list-units List units\n"
2016 " start [NAME...] Start one or more units\n"
2017 " stop [NAME...] Stop one or more units\n"
2018 " restart [NAME...] Restart one or more units\n"
2019 " reload [NAME...] Reload one or more units\n"
2020 " isolate [NAME] Start one unit and stop all others\n"
2021 " check [NAME...] Check whether any of the passed units are active\n"
2022 " show [NAME...|JOB...] Show information about one or more units\n"
2023 " load [NAME...] Load one or more units\n"
2024 " list-jobs List jobs\n"
2025 " cancel [JOB...] Cancel one or more jobs\n"
2026 " clear-jobs Cancel all jobs\n"
2027 " monitor Monitor unit/job changes\n"
2028 " dump Dump server status\n"
2029 " snapshot [NAME] Create a snapshot\n"
2030 " delete [NAME...] Remove one or more snapshots\n"
2031 " daemon-reload Reload systemd manager configuration\n"
2032 " daemon-reexec Reexecute systemd manager\n"
2033 " daemon-exit Ask the systemd manager to quit\n"
2034 " show-environment Dump environment\n"
2035 " set-environment [NAME=VALUE...] Set one or more environment variables\n"
2036 " unset-environment [NAME...] Unset one or more environment variables\n"
2037 " halt Shut down and halt the system\n"
2038 " poweroff Shut down and power-off the system\n"
2039 " reboot Shut down and reboot the system\n"
2040 " default Enter default mode\n"
2041 " rescue Enter rescue mode\n"
2042 " emergency Enter emergency mode\n",
2043 program_invocation_short_name);
2048 static int halt_help(void) {
2050 printf("%s [OPTIONS...]\n\n"
2051 "%s the system.\n\n"
2052 " --help Show this help\n"
2053 " --halt Halt the machine\n"
2054 " -p --poweroff Switch off the machine\n"
2055 " --reboot Reboot the machine\n"
2056 " -f --force Force immediate halt/power-off/reboot\n"
2057 " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
2058 " -d --no-wtmp Don't write wtmp record\n"
2059 " -n --no-sync Don't sync before halt/power-off/reboot\n"
2060 " --no-wall Don't send wall message before halt/power-off/reboot\n",
2061 program_invocation_short_name,
2062 arg_action == ACTION_REBOOT ? "Reboot" :
2063 arg_action == ACTION_POWEROFF ? "Power off" :
2069 static int shutdown_help(void) {
2071 printf("%s [OPTIONS...] [now] [WALL...]\n\n"
2072 "Shut down the system.\n\n"
2073 " --help Show this help\n"
2074 " -H --halt Halt the machine\n"
2075 " -P --poweroff Power-off the machine\n"
2076 " -r --reboot Reboot the machine\n"
2077 " -h Equivalent to --poweroff, overriden by --halt\n"
2078 " -k Don't halt/power-off/reboot, just send warnings\n"
2079 " --no-wall Don't send wall message before halt/power-off/reboot\n",
2080 program_invocation_short_name);
2085 static int telinit_help(void) {
2087 printf("%s [OPTIONS...] {COMMAND}\n\n"
2088 "Send control commands to the init daemon.\n\n"
2089 " --help Show this help\n"
2090 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
2092 " 0 Power-off the machine\n"
2093 " 6 Reboot the machine\n"
2094 " 2, 3, 4, 5 Start runlevelX.target unit\n"
2095 " 1, s, S Enter rescue mode\n"
2096 " q, Q Reload init daemon configuration\n"
2097 " u, U Reexecute init daemon\n",
2098 program_invocation_short_name);
2103 static int runlevel_help(void) {
2105 printf("%s [OPTIONS...]\n\n"
2106 "Prints the previous and current runlevel of the init system.\n\n"
2107 " --help Show this help\n",
2108 program_invocation_short_name);
2113 static int systemctl_parse_argv(int argc, char *argv[]) {
2116 ARG_REPLACE = 0x100,
2123 static const struct option options[] = {
2124 { "help", no_argument, NULL, 'h' },
2125 { "type", required_argument, NULL, 't' },
2126 { "property", required_argument, NULL, 'p' },
2127 { "all", no_argument, NULL, 'a' },
2128 { "replace", no_argument, NULL, ARG_REPLACE },
2129 { "session", no_argument, NULL, ARG_SESSION },
2130 { "system", no_argument, NULL, ARG_SYSTEM },
2131 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
2132 { "no-wall", no_argument, NULL, ARG_NO_WALL },
2133 { "quiet", no_argument, NULL, 'q' },
2134 { NULL, 0, NULL, 0 }
2142 while ((c = getopt_long(argc, argv, "ht:p:aq", options, NULL)) >= 0) {
2155 arg_property = optarg;
2157 /* If the user asked for a particular
2158 * property, show it to him, even if it is
2176 arg_session = false;
2180 arg_no_block = true;
2195 log_error("Unknown option code %c", c);
2203 static int halt_parse_argv(int argc, char *argv[]) {
2212 static const struct option options[] = {
2213 { "help", no_argument, NULL, ARG_HELP },
2214 { "halt", no_argument, NULL, ARG_HALT },
2215 { "poweroff", no_argument, NULL, 'p' },
2216 { "reboot", no_argument, NULL, ARG_REBOOT },
2217 { "force", no_argument, NULL, 'f' },
2218 { "wtmp-only", no_argument, NULL, 'w' },
2219 { "no-wtmp", no_argument, NULL, 'd' },
2220 { "no-sync", no_argument, NULL, 'n' },
2221 { "no-wall", no_argument, NULL, ARG_NO_WALL },
2222 { NULL, 0, NULL, 0 }
2230 if (utmp_get_runlevel(&runlevel, NULL) >= 0)
2231 if (runlevel == '0' || runlevel == '6')
2232 arg_immediate = true;
2234 while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
2242 arg_action = ACTION_HALT;
2246 arg_action = ACTION_POWEROFF;
2250 arg_action = ACTION_REBOOT;
2254 arg_immediate = true;
2275 /* Compatibility nops */
2282 log_error("Unknown option code %c", c);
2287 if (optind < argc) {
2288 log_error("Too many arguments.");
2295 static int shutdown_parse_argv(int argc, char *argv[]) {
2302 static const struct option options[] = {
2303 { "help", no_argument, NULL, ARG_HELP },
2304 { "halt", no_argument, NULL, 'H' },
2305 { "poweroff", no_argument, NULL, 'P' },
2306 { "reboot", no_argument, NULL, 'r' },
2307 { "no-wall", no_argument, NULL, ARG_NO_WALL },
2308 { NULL, 0, NULL, 0 }
2316 while ((c = getopt_long(argc, argv, "HPrhkt:a", options, NULL)) >= 0) {
2324 arg_action = ACTION_HALT;
2328 arg_action = ACTION_POWEROFF;
2332 arg_action = ACTION_REBOOT;
2336 if (arg_action != ACTION_HALT)
2337 arg_action = ACTION_POWEROFF;
2350 /* Compatibility nops */
2357 log_error("Unknown option code %c", c);
2362 if (argc > optind && !streq(argv[optind], "now"))
2363 log_warning("First argument '%s' isn't 'now'. Ignoring.", argv[optind]);
2365 /* We ignore the time argument */
2366 if (argc > optind + 1)
2367 arg_wall = argv + optind + 1;
2374 static int telinit_parse_argv(int argc, char *argv[]) {
2381 static const struct option options[] = {
2382 { "help", no_argument, NULL, ARG_HELP },
2383 { "no-wall", no_argument, NULL, ARG_NO_WALL },
2384 { NULL, 0, NULL, 0 }
2387 static const struct {
2391 { '0', ACTION_POWEROFF },
2392 { '6', ACTION_REBOOT },
2393 { '1', ACTION_RESCUE },
2394 { '2', ACTION_RUNLEVEL2 },
2395 { '3', ACTION_RUNLEVEL3 },
2396 { '4', ACTION_RUNLEVEL4 },
2397 { '5', ACTION_RUNLEVEL5 },
2398 { 's', ACTION_RESCUE },
2399 { 'S', ACTION_RESCUE },
2400 { 'q', ACTION_RELOAD },
2401 { 'Q', ACTION_RELOAD },
2402 { 'u', ACTION_REEXEC },
2403 { 'U', ACTION_REEXEC }
2412 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
2427 log_error("Unknown option code %c", c);
2432 if (optind >= argc) {
2437 if (optind + 1 < argc) {
2438 log_error("Too many arguments.");
2442 if (strlen(argv[optind]) != 1) {
2443 log_error("Expected single character argument.");
2447 for (i = 0; i < ELEMENTSOF(table); i++)
2448 if (table[i].from == argv[optind][0])
2451 if (i >= ELEMENTSOF(table)) {
2452 log_error("Unknown command %s.", argv[optind]);
2456 arg_action = table[i].to;
2463 static int runlevel_parse_argv(int argc, char *argv[]) {
2469 static const struct option options[] = {
2470 { "help", no_argument, NULL, ARG_HELP },
2471 { NULL, 0, NULL, 0 }
2479 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
2490 log_error("Unknown option code %c", c);
2495 if (optind < argc) {
2496 log_error("Too many arguments.");
2503 static int parse_argv(int argc, char *argv[]) {
2507 if (program_invocation_short_name) {
2509 if (strstr(program_invocation_short_name, "halt")) {
2510 arg_action = ACTION_HALT;
2511 return halt_parse_argv(argc, argv);
2512 } else if (strstr(program_invocation_short_name, "poweroff")) {
2513 arg_action = ACTION_POWEROFF;
2514 return halt_parse_argv(argc, argv);
2515 } else if (strstr(program_invocation_short_name, "reboot")) {
2516 arg_action = ACTION_REBOOT;
2517 return halt_parse_argv(argc, argv);
2518 } else if (strstr(program_invocation_short_name, "shutdown")) {
2519 arg_action = ACTION_POWEROFF;
2520 return shutdown_parse_argv(argc, argv);
2521 } else if (strstr(program_invocation_short_name, "init")) {
2522 arg_action = ACTION_INVALID;
2523 return telinit_parse_argv(argc, argv);
2524 } else if (strstr(program_invocation_short_name, "runlevel")) {
2525 arg_action = ACTION_RUNLEVEL;
2526 return runlevel_parse_argv(argc, argv);
2530 arg_action = ACTION_SYSTEMCTL;
2531 return systemctl_parse_argv(argc, argv);
2534 static int action_to_runlevel(void) {
2536 static const char table[_ACTION_MAX] = {
2537 [ACTION_HALT] = '0',
2538 [ACTION_POWEROFF] = '0',
2539 [ACTION_REBOOT] = '6',
2540 [ACTION_RUNLEVEL2] = '2',
2541 [ACTION_RUNLEVEL3] = '3',
2542 [ACTION_RUNLEVEL4] = '4',
2543 [ACTION_RUNLEVEL5] = '5',
2544 [ACTION_RESCUE] = '1'
2547 assert(arg_action < _ACTION_MAX);
2549 return table[arg_action];
2552 static int talk_upstart(void) {
2553 DBusMessage *m = NULL, *reply = NULL;
2555 int previous, rl, r;
2557 env1_buf[] = "RUNLEVEL=X",
2558 env2_buf[] = "PREVLEVEL=X";
2559 char *env1 = env1_buf, *env2 = env2_buf;
2560 const char *emit = "runlevel";
2561 dbus_bool_t b_false = FALSE;
2562 DBusMessageIter iter, sub;
2563 DBusConnection *bus;
2565 dbus_error_init(&error);
2567 if (!(rl = action_to_runlevel()))
2570 if (utmp_get_runlevel(&previous, NULL) < 0)
2573 if (!(bus = dbus_connection_open("unix:abstract=/com/ubuntu/upstart", &error))) {
2574 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
2579 log_error("Failed to connect to Upstart bus: %s", error.message);
2584 if ((r = bus_check_peercred(bus)) < 0) {
2585 log_error("Failed to verify owner of bus.");
2589 if (!(m = dbus_message_new_method_call(
2590 "com.ubuntu.Upstart",
2591 "/com/ubuntu/Upstart",
2592 "com.ubuntu.Upstart0_6",
2595 log_error("Could not allocate message.");
2600 dbus_message_iter_init_append(m, &iter);
2602 env1_buf[sizeof(env1_buf)-2] = rl;
2603 env2_buf[sizeof(env2_buf)-2] = previous;
2605 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
2606 !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
2607 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
2608 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
2609 !dbus_message_iter_close_container(&iter, &sub) ||
2610 !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
2611 log_error("Could not append arguments to message.");
2616 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2618 if (error_is_no_service(&error)) {
2623 log_error("Failed to issue method call: %s", error.message);
2632 dbus_message_unref(m);
2635 dbus_message_unref(reply);
2638 dbus_connection_unref(bus);
2640 dbus_error_free(&error);
2645 static int talk_initctl(void) {
2646 struct init_request request;
2650 if (!(rl = action_to_runlevel()))
2654 request.magic = INIT_MAGIC;
2655 request.sleeptime = 0;
2656 request.cmd = INIT_CMD_RUNLVL;
2657 request.runlevel = rl;
2659 if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
2661 if (errno == ENOENT)
2664 log_error("Failed to open "INIT_FIFO": %m");
2669 r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
2670 close_nointr_nofail(fd);
2673 log_error("Failed to write to "INIT_FIFO": %m");
2674 return errno ? -errno : -EIO;
2680 static int systemctl_main(DBusConnection *bus, int argc, char *argv[]) {
2682 static const struct {
2690 int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
2692 { "list-units", LESS, 1, list_units },
2693 { "list-jobs", EQUAL, 1, list_jobs },
2694 { "clear-jobs", EQUAL, 1, clear_jobs },
2695 { "load", MORE, 2, load_unit },
2696 { "cancel", MORE, 2, cancel_job },
2697 { "start", MORE, 2, start_unit },
2698 { "stop", MORE, 2, start_unit },
2699 { "reload", MORE, 2, start_unit },
2700 { "restart", MORE, 2, start_unit },
2701 { "isolate", EQUAL, 2, start_unit },
2702 { "check", MORE, 2, check_unit },
2703 { "show", MORE, 1, show },
2704 { "monitor", EQUAL, 1, monitor },
2705 { "dump", EQUAL, 1, dump },
2706 { "snapshot", LESS, 2, snapshot },
2707 { "delete", MORE, 2, delete_snapshot },
2708 { "daemon-reload", EQUAL, 1, clear_jobs },
2709 { "daemon-reexec", EQUAL, 1, clear_jobs },
2710 { "daemon-exit", EQUAL, 1, clear_jobs },
2711 { "show-environment", EQUAL, 1, show_enviroment },
2712 { "set-environment", MORE, 2, set_environment },
2713 { "unset-environment", MORE, 2, set_environment },
2714 { "halt", EQUAL, 1, start_special },
2715 { "poweroff", EQUAL, 1, start_special },
2716 { "reboot", EQUAL, 1, start_special },
2717 { "default", EQUAL, 1, start_special },
2718 { "rescue", EQUAL, 1, start_special },
2719 { "emergency", EQUAL, 1, start_special },
2729 left = argc - optind;
2732 /* Special rule: no arguments means "list-units" */
2735 if (streq(argv[optind], "help")) {
2740 for (i = 0; i < ELEMENTSOF(verbs); i++)
2741 if (streq(argv[optind], verbs[i].verb))
2744 if (i >= ELEMENTSOF(verbs)) {
2745 log_error("Unknown operation %s", argv[optind]);
2750 switch (verbs[i].argc_cmp) {
2753 if (left != verbs[i].argc) {
2754 log_error("Invalid number of arguments.");
2761 if (left < verbs[i].argc) {
2762 log_error("Too few arguments.");
2769 if (left > verbs[i].argc) {
2770 log_error("Too many arguments.");
2777 assert_not_reached("Unknown comparison operator.");
2780 return verbs[i].dispatch(bus, argv + optind, left);
2783 static int reload_with_fallback(DBusConnection *bus) {
2787 /* First, try systemd via D-Bus. */
2788 if ((r = clear_jobs(bus, NULL, 0)) > 0)
2792 /* Nothing else worked, so let's try signals */
2793 assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
2795 if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
2796 log_error("kill() failed: %m");
2803 static int start_with_fallback(DBusConnection *bus) {
2806 warn_wall(arg_action);
2809 /* First, try systemd via D-Bus. */
2810 if ((r = start_unit(bus, NULL, 0)) > 0)
2813 /* Hmm, talking to systemd via D-Bus didn't work. Then
2814 * let's try to talk to Upstart via D-Bus. */
2815 if ((r = talk_upstart()) > 0)
2819 /* Nothing else worked, so let's try
2821 if ((r = talk_initctl()) != 0)
2824 log_error("Failed to talk to init daemon.");
2828 static int halt_main(DBusConnection *bus) {
2832 return start_with_fallback(bus);
2835 if ((r = utmp_put_shutdown(0)) < 0)
2836 log_warning("Failed to write utmp record: %s", strerror(-r));
2844 /* Make sure C-A-D is handled by the kernel from this
2846 reboot(RB_ENABLE_CAD);
2848 switch (arg_action) {
2851 log_info("Halting");
2852 reboot(RB_HALT_SYSTEM);
2855 case ACTION_POWEROFF:
2856 log_info("Powering off");
2857 reboot(RB_POWER_OFF);
2861 log_info("Rebooting");
2862 reboot(RB_AUTOBOOT);
2866 assert_not_reached("Unknown halt action.");
2869 /* We should never reach this. */
2873 static int runlevel_main(void) {
2874 int r, runlevel, previous;
2876 if ((r = utmp_get_runlevel(&runlevel, &previous)) < 0) {
2882 previous <= 0 ? 'N' : previous,
2883 runlevel <= 0 ? 'N' : runlevel);
2888 int main(int argc, char*argv[]) {
2890 DBusConnection *bus = NULL;
2893 dbus_error_init(&error);
2895 log_parse_environment();
2897 if ((r = parse_argv(argc, argv)) < 0)
2904 /* /sbin/runlevel doesn't need to communicate via D-Bus, so
2905 * let's shortcut this */
2906 if (arg_action == ACTION_RUNLEVEL) {
2907 retval = runlevel_main() < 0;
2911 /* If we are root, then let's not go via the bus */
2912 if (geteuid() == 0 && !arg_session) {
2913 bus = dbus_connection_open("unix:abstract=/org/freedesktop/systemd1/private", &error);
2915 if (bus && bus_check_peercred(bus) < 0) {
2916 log_error("Failed to verify owner of bus.");
2920 bus = dbus_bus_get(arg_session ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &error);
2923 dbus_connection_set_exit_on_disconnect(bus, FALSE);
2925 switch (arg_action) {
2927 case ACTION_SYSTEMCTL: {
2930 log_error("Failed to get D-Bus connection: %s", error.message);
2934 retval = systemctl_main(bus, argc, argv) < 0;
2939 case ACTION_POWEROFF:
2941 retval = halt_main(bus) < 0;
2944 case ACTION_RUNLEVEL2:
2945 case ACTION_RUNLEVEL3:
2946 case ACTION_RUNLEVEL4:
2947 case ACTION_RUNLEVEL5:
2949 case ACTION_EMERGENCY:
2950 case ACTION_DEFAULT:
2951 retval = start_with_fallback(bus) < 0;
2956 retval = reload_with_fallback(bus) < 0;
2959 case ACTION_INVALID:
2960 case ACTION_RUNLEVEL:
2962 assert_not_reached("Unknown action");
2968 dbus_connection_unref(bus);
2970 dbus_error_free(&error);