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>
35 #include <dbus/dbus.h>
41 #include "utmp-wtmp.h"
45 #include "dbus-common.h"
46 #include "cgroup-show.h"
47 #include "cgroup-util.h"
49 #include "path-lookup.h"
50 #include "conf-parser.h"
51 #include "sd-daemon.h"
53 static const char *arg_type = NULL;
54 static char **arg_property = NULL;
55 static bool arg_all = false;
56 static bool arg_fail = false;
57 static bool arg_session = false;
58 static bool arg_global = false;
59 static bool arg_immediate = false;
60 static bool arg_no_block = false;
61 static bool arg_no_wtmp = false;
62 static bool arg_no_sync = false;
63 static bool arg_no_wall = false;
64 static bool arg_no_reload = false;
65 static bool arg_dry = false;
66 static bool arg_quiet = false;
67 static bool arg_full = false;
68 static bool arg_force = false;
69 static bool arg_defaults = false;
70 static char **arg_wall = NULL;
88 } arg_action = ACTION_SYSTEMCTL;
95 static bool private_bus = false;
97 static int daemon_reload(DBusConnection *bus, char **args, unsigned n);
99 static const char *ansi_highlight(bool b) {
102 if (_unlikely_(t < 0))
103 t = isatty(STDOUT_FILENO) > 0;
108 return b ? ANSI_HIGHLIGHT_ON : ANSI_HIGHLIGHT_OFF;
111 static bool error_is_no_service(DBusError *error) {
115 if (!dbus_error_is_set(error))
118 if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
121 if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
124 return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
127 static int bus_iter_get_basic_and_next(DBusMessageIter *iter, int type, void *data, bool next) {
132 if (dbus_message_iter_get_arg_type(iter) != type)
135 dbus_message_iter_get_basic(iter, data);
137 if (!dbus_message_iter_next(iter) != !next)
143 static void warn_wall(enum action action) {
144 static const char *table[_ACTION_MAX] = {
145 [ACTION_HALT] = "The system is going down for system halt NOW!",
146 [ACTION_REBOOT] = "The system is going down for reboot NOW!",
147 [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
148 [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
149 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
158 if (!(p = strv_join(arg_wall, " "))) {
159 log_error("Failed to join strings.");
175 utmp_wall(table[action]);
178 static int list_units(DBusConnection *bus, char **args, unsigned n) {
179 DBusMessage *m = NULL, *reply = NULL;
182 DBusMessageIter iter, sub, sub2;
185 dbus_error_init(&error);
189 if (!(m = dbus_message_new_method_call(
190 "org.freedesktop.systemd1",
191 "/org/freedesktop/systemd1",
192 "org.freedesktop.systemd1.Manager",
194 log_error("Could not allocate message.");
198 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
199 log_error("Failed to issue method call: %s", error.message);
204 if (!dbus_message_iter_init(reply, &iter) ||
205 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
206 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
207 log_error("Failed to parse reply.");
212 dbus_message_iter_recurse(&iter, &sub);
214 if (isatty(STDOUT_FILENO))
215 printf("%-45s %-6s %-12s %-12s %-15s %s\n", "UNIT", "LOAD", "ACTIVE", "SUB", "JOB", "DESCRIPTION");
217 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
218 const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path, *job_type, *job_path, *dot;
221 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
222 log_error("Failed to parse reply.");
227 dbus_message_iter_recurse(&sub, &sub2);
229 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
230 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
231 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
232 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
233 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
234 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
235 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0 ||
236 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &job_id, true) < 0 ||
237 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &job_type, true) < 0 ||
238 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, false) < 0) {
239 log_error("Failed to parse reply.");
244 if ((!arg_type || ((dot = strrchr(id, '.')) &&
245 streq(dot+1, arg_type))) &&
246 (arg_all || !(streq(active_state, "inactive") || following[0]) || job_id > 0)) {
250 if (streq(active_state, "maintenance"))
251 fputs(ansi_highlight(true), stdout);
253 e = arg_full ? NULL : ellipsize(id, 45, 33);
254 printf("%-45s %-6s %-12s %-12s%n", e ? e : id, load_state, active_state, sub_state, &a);
258 printf(" => %-12s%n", job_type, &b);
262 if (a + b + 2 < columns()) {
266 printf(" %.*s", columns() - a - b - 2, description);
269 if (streq(active_state, "maintenance"))
270 fputs(ansi_highlight(false), stdout);
276 dbus_message_iter_next(&sub);
279 if (isatty(STDOUT_FILENO)) {
281 printf("\nLOAD = Load State, reflects whether the unit configuration was properly loaded.\n"
282 "ACTIVE = Active State, the high-level unit activation state, i.e. generalization of the substate.\n"
283 "SUB = Substate, the low-level unit activation state, possible values depend on unit type.\n"
284 "JOB = Job, shows pending jobs for the unit.\n");
287 printf("\n%u units listed.\n", k);
289 printf("\n%u units listed. Pass --all to see inactive units, too.\n", k);
296 dbus_message_unref(m);
299 dbus_message_unref(reply);
301 dbus_error_free(&error);
306 static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
307 static const char * const colors[] = {
308 "Requires", "[color=\"black\"]",
309 "RequiresOverridable", "[color=\"black\"]",
310 "Requisite", "[color=\"darkblue\"]",
311 "RequisiteOverridable", "[color=\"darkblue\"]",
312 "Wants", "[color=\"darkgrey\"]",
313 "Conflicts", "[color=\"red\"]",
314 "After", "[color=\"green\"]"
317 const char *c = NULL;
324 for (i = 0; i < ELEMENTSOF(colors); i += 2)
325 if (streq(colors[i], prop)) {
333 if (arg_dot != DOT_ALL)
334 if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
337 switch (dbus_message_iter_get_arg_type(iter)) {
339 case DBUS_TYPE_ARRAY:
341 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
344 dbus_message_iter_recurse(iter, &sub);
346 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
349 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
350 dbus_message_iter_get_basic(&sub, &s);
351 printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
353 dbus_message_iter_next(&sub);
363 static int dot_one(DBusConnection *bus, const char *name, const char *path) {
364 DBusMessage *m = NULL, *reply = NULL;
365 const char *interface = "org.freedesktop.systemd1.Unit";
368 DBusMessageIter iter, sub, sub2, sub3;
373 dbus_error_init(&error);
375 if (!(m = dbus_message_new_method_call(
376 "org.freedesktop.systemd1",
378 "org.freedesktop.DBus.Properties",
380 log_error("Could not allocate message.");
385 if (!dbus_message_append_args(m,
386 DBUS_TYPE_STRING, &interface,
387 DBUS_TYPE_INVALID)) {
388 log_error("Could not append arguments to message.");
393 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
394 log_error("Failed to issue method call: %s", error.message);
399 if (!dbus_message_iter_init(reply, &iter) ||
400 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
401 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
402 log_error("Failed to parse reply.");
407 dbus_message_iter_recurse(&iter, &sub);
409 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
412 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
413 log_error("Failed to parse reply.");
418 dbus_message_iter_recurse(&sub, &sub2);
420 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
421 log_error("Failed to parse reply.");
426 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
427 log_error("Failed to parse reply.");
432 dbus_message_iter_recurse(&sub2, &sub3);
434 if (dot_one_property(name, prop, &sub3)) {
435 log_error("Failed to parse reply.");
440 dbus_message_iter_next(&sub);
445 dbus_message_unref(m);
448 dbus_message_unref(reply);
450 dbus_error_free(&error);
455 static int dot(DBusConnection *bus, char **args, unsigned n) {
456 DBusMessage *m = NULL, *reply = NULL;
459 DBusMessageIter iter, sub, sub2;
461 dbus_error_init(&error);
465 if (!(m = dbus_message_new_method_call(
466 "org.freedesktop.systemd1",
467 "/org/freedesktop/systemd1",
468 "org.freedesktop.systemd1.Manager",
470 log_error("Could not allocate message.");
474 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
475 log_error("Failed to issue method call: %s", error.message);
480 if (!dbus_message_iter_init(reply, &iter) ||
481 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
482 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
483 log_error("Failed to parse reply.");
488 printf("digraph systemd {\n");
490 dbus_message_iter_recurse(&iter, &sub);
491 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
492 const char *id, *description, *load_state, *active_state, *sub_state, *unit_path;
494 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
495 log_error("Failed to parse reply.");
500 dbus_message_iter_recurse(&sub, &sub2);
502 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
503 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
504 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
505 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
506 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
507 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
508 log_error("Failed to parse reply.");
513 if ((r = dot_one(bus, id, unit_path)) < 0)
516 /* printf("\t\"%s\";\n", id); */
517 dbus_message_iter_next(&sub);
522 log_info(" Color legend: black = Requires\n"
523 " dark blue = Requisite\n"
524 " dark grey = Wants\n"
528 if (isatty(fileno(stdout)))
529 log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
530 "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
536 dbus_message_unref(m);
539 dbus_message_unref(reply);
541 dbus_error_free(&error);
546 static int list_jobs(DBusConnection *bus, char **args, unsigned n) {
547 DBusMessage *m = NULL, *reply = NULL;
550 DBusMessageIter iter, sub, sub2;
553 dbus_error_init(&error);
557 if (!(m = dbus_message_new_method_call(
558 "org.freedesktop.systemd1",
559 "/org/freedesktop/systemd1",
560 "org.freedesktop.systemd1.Manager",
562 log_error("Could not allocate message.");
566 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
567 log_error("Failed to issue method call: %s", error.message);
572 if (!dbus_message_iter_init(reply, &iter) ||
573 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
574 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
575 log_error("Failed to parse reply.");
580 dbus_message_iter_recurse(&iter, &sub);
582 printf("%4s %-45s %-17s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
584 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
585 const char *name, *type, *state, *job_path, *unit_path;
589 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
590 log_error("Failed to parse reply.");
595 dbus_message_iter_recurse(&sub, &sub2);
597 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
598 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
599 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
600 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
601 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
602 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
603 log_error("Failed to parse reply.");
608 e = arg_full ? NULL : ellipsize(name, 45, 33);
609 printf("%4u %-45s %-17s %-7s\n", id, e ? e : name, type, state);
614 dbus_message_iter_next(&sub);
617 printf("\n%u jobs listed.\n", k);
622 dbus_message_unref(m);
625 dbus_message_unref(reply);
627 dbus_error_free(&error);
632 static int load_unit(DBusConnection *bus, char **args, unsigned n) {
633 DBusMessage *m = NULL, *reply = NULL;
638 dbus_error_init(&error);
643 for (i = 1; i < n; i++) {
645 if (!(m = dbus_message_new_method_call(
646 "org.freedesktop.systemd1",
647 "/org/freedesktop/systemd1",
648 "org.freedesktop.systemd1.Manager",
650 log_error("Could not allocate message.");
655 if (!dbus_message_append_args(m,
656 DBUS_TYPE_STRING, &args[i],
657 DBUS_TYPE_INVALID)) {
658 log_error("Could not append arguments to message.");
663 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
664 log_error("Failed to issue method call: %s", error.message);
669 dbus_message_unref(m);
670 dbus_message_unref(reply);
679 dbus_message_unref(m);
682 dbus_message_unref(reply);
684 dbus_error_free(&error);
689 static int cancel_job(DBusConnection *bus, char **args, unsigned n) {
690 DBusMessage *m = NULL, *reply = NULL;
695 dbus_error_init(&error);
701 return daemon_reload(bus, args, n);
703 for (i = 1; i < n; i++) {
707 if (!(m = dbus_message_new_method_call(
708 "org.freedesktop.systemd1",
709 "/org/freedesktop/systemd1",
710 "org.freedesktop.systemd1.Manager",
712 log_error("Could not allocate message.");
717 if ((r = safe_atou(args[i], &id)) < 0) {
718 log_error("Failed to parse job id: %s", strerror(-r));
722 assert_cc(sizeof(uint32_t) == sizeof(id));
723 if (!dbus_message_append_args(m,
724 DBUS_TYPE_UINT32, &id,
725 DBUS_TYPE_INVALID)) {
726 log_error("Could not append arguments to message.");
731 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
732 log_error("Failed to issue method call: %s", error.message);
737 if (!dbus_message_get_args(reply, &error,
738 DBUS_TYPE_OBJECT_PATH, &path,
739 DBUS_TYPE_INVALID)) {
740 log_error("Failed to parse reply: %s", error.message);
745 dbus_message_unref(m);
746 if (!(m = dbus_message_new_method_call(
747 "org.freedesktop.systemd1",
749 "org.freedesktop.systemd1.Job",
751 log_error("Could not allocate message.");
756 dbus_message_unref(reply);
757 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
758 log_error("Failed to issue method call: %s", error.message);
763 dbus_message_unref(m);
764 dbus_message_unref(reply);
772 dbus_message_unref(m);
775 dbus_message_unref(reply);
777 dbus_error_free(&error);
782 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
783 DBusMessage *m, *reply;
784 dbus_bool_t b = FALSE;
785 DBusMessageIter iter, sub;
787 *interface = "org.freedesktop.systemd1.Unit",
788 *property = "NeedDaemonReload",
791 /* We ignore all errors here, since this is used to show a warning only */
793 if (!(m = dbus_message_new_method_call(
794 "org.freedesktop.systemd1",
795 "/org/freedesktop/systemd1",
796 "org.freedesktop.systemd1.Manager",
800 if (!dbus_message_append_args(m,
801 DBUS_TYPE_STRING, &unit,
805 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
808 if (!dbus_message_get_args(reply, NULL,
809 DBUS_TYPE_OBJECT_PATH, &path,
813 dbus_message_unref(m);
814 if (!(m = dbus_message_new_method_call(
815 "org.freedesktop.systemd1",
817 "org.freedesktop.DBus.Properties",
821 if (!dbus_message_append_args(m,
822 DBUS_TYPE_STRING, &interface,
823 DBUS_TYPE_STRING, &property,
824 DBUS_TYPE_INVALID)) {
828 dbus_message_unref(reply);
829 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
832 if (!dbus_message_iter_init(reply, &iter) ||
833 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
836 dbus_message_iter_recurse(&iter, &sub);
838 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
841 dbus_message_iter_get_basic(&sub, &b);
845 dbus_message_unref(m);
848 dbus_message_unref(reply);
853 typedef struct WaitData {
858 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
866 dbus_error_init(&error);
868 log_debug("Got D-Bus request: %s.%s() on %s",
869 dbus_message_get_interface(message),
870 dbus_message_get_member(message),
871 dbus_message_get_path(message));
873 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
874 log_error("Warning! D-Bus connection terminated.");
875 dbus_connection_close(connection);
877 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
880 dbus_bool_t success = true;
882 if (!dbus_message_get_args(message, &error,
883 DBUS_TYPE_UINT32, &id,
884 DBUS_TYPE_OBJECT_PATH, &path,
885 DBUS_TYPE_BOOLEAN, &success,
887 log_error("Failed to parse message: %s", error.message);
891 if ((p = set_remove(d->set, (char*) path)))
899 dbus_error_free(&error);
900 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
903 static int enable_wait_for_jobs(DBusConnection *bus) {
911 dbus_error_init(&error);
912 dbus_bus_add_match(bus,
914 "sender='org.freedesktop.systemd1',"
915 "interface='org.freedesktop.systemd1.Manager',"
916 "member='JobRemoved',"
917 "path='/org/freedesktop/systemd1'",
920 if (dbus_error_is_set(&error)) {
921 log_error("Failed to add match: %s", error.message);
922 dbus_error_free(&error);
926 /* This is slightly dirty, since we don't undo the match registrations. */
930 static int wait_for_jobs(DBusConnection *bus, Set *s) {
941 if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
942 log_error("Failed to add filter.");
947 while (!set_isempty(s) &&
948 dbus_connection_read_write_dispatch(bus, -1))
951 if (!arg_quiet && d.failed)
952 log_error("Job failed, see logs for details.");
954 r = d.failed ? -EIO : 0;
957 /* This is slightly dirty, since we don't undo the filter registration. */
962 static int start_unit_one(
969 DBusMessage *m = NULL, *reply = NULL;
978 assert(arg_no_block || s);
980 dbus_error_init(&error);
982 if (!(m = dbus_message_new_method_call(
983 "org.freedesktop.systemd1",
984 "/org/freedesktop/systemd1",
985 "org.freedesktop.systemd1.Manager",
987 log_error("Could not allocate message.");
992 if (!dbus_message_append_args(m,
993 DBUS_TYPE_STRING, &name,
994 DBUS_TYPE_STRING, &mode,
995 DBUS_TYPE_INVALID)) {
996 log_error("Could not append arguments to message.");
1001 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1003 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
1004 /* There's always a fallback possible for
1005 * legacy actions. */
1010 log_error("Failed to issue method call: %s", error.message);
1015 if (!dbus_message_get_args(reply, &error,
1016 DBUS_TYPE_OBJECT_PATH, &path,
1017 DBUS_TYPE_INVALID)) {
1018 log_error("Failed to parse reply: %s", error.message);
1023 if (need_daemon_reload(bus, name))
1024 log_warning("Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
1025 arg_session ? "--session" : "--system");
1027 if (!arg_no_block) {
1030 if (!(p = strdup(path))) {
1031 log_error("Failed to duplicate path.");
1036 if ((r = set_put(s, p)) < 0) {
1038 log_error("Failed to add path to set.");
1047 dbus_message_unref(m);
1050 dbus_message_unref(reply);
1052 dbus_error_free(&error);
1057 static enum action verb_to_action(const char *verb) {
1058 if (streq(verb, "halt"))
1060 else if (streq(verb, "poweroff"))
1061 return ACTION_POWEROFF;
1062 else if (streq(verb, "reboot"))
1063 return ACTION_REBOOT;
1064 else if (streq(verb, "rescue"))
1065 return ACTION_RESCUE;
1066 else if (streq(verb, "emergency"))
1067 return ACTION_EMERGENCY;
1068 else if (streq(verb, "default"))
1069 return ACTION_DEFAULT;
1071 return ACTION_INVALID;
1074 static int start_unit(DBusConnection *bus, char **args, unsigned n) {
1076 static const char * const table[_ACTION_MAX] = {
1077 [ACTION_HALT] = SPECIAL_HALT_TARGET,
1078 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
1079 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
1080 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
1081 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
1082 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
1083 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
1084 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
1085 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
1086 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET
1091 const char *method, *mode, *one_name;
1096 if (arg_action == ACTION_SYSTEMCTL) {
1098 streq(args[0], "stop") ? "StopUnit" :
1099 streq(args[0], "reload") ? "ReloadUnit" :
1100 streq(args[0], "restart") ? "RestartUnit" :
1101 streq(args[0], "try-restart") ? "TryRestartUnit" :
1102 streq(args[0], "reload-or-restart") ? "ReloadOrRestartUnit" :
1103 streq(args[0], "reload-or-try-restart") ||
1104 streq(args[0], "force-reload") ||
1105 streq(args[0], "condrestart") ? "ReloadOrTryRestartUnit" :
1109 (streq(args[0], "isolate") ||
1110 streq(args[0], "rescue") ||
1111 streq(args[0], "emergency")) ? "isolate" :
1115 one_name = table[verb_to_action(args[0])];
1118 assert(arg_action < ELEMENTSOF(table));
1119 assert(table[arg_action]);
1121 method = "StartUnit";
1123 mode = (arg_action == ACTION_EMERGENCY ||
1124 arg_action == ACTION_RESCUE) ? "isolate" : "replace";
1126 one_name = table[arg_action];
1129 if (!arg_no_block) {
1130 if ((r = enable_wait_for_jobs(bus)) < 0) {
1131 log_error("Could not watch jobs: %s", strerror(-r));
1135 if (!(s = set_new(string_hash_func, string_compare_func))) {
1136 log_error("Failed to allocate set.");
1145 if ((r = start_unit_one(bus, method, one_name, mode, s)) <= 0)
1148 for (i = 1; i < n; i++)
1149 if ((r = start_unit_one(bus, method, args[i], mode, s)) < 0)
1154 r = wait_for_jobs(bus, s);
1163 static int start_special(DBusConnection *bus, char **args, unsigned n) {
1169 r = start_unit(bus, args, n);
1172 warn_wall(verb_to_action(args[0]));
1177 static int check_unit(DBusConnection *bus, char **args, unsigned n) {
1178 DBusMessage *m = NULL, *reply = NULL;
1180 *interface = "org.freedesktop.systemd1.Unit",
1181 *property = "ActiveState";
1182 int r = -EADDRNOTAVAIL;
1189 dbus_error_init(&error);
1191 for (i = 1; i < n; i++) {
1192 const char *path = NULL;
1194 DBusMessageIter iter, sub;
1196 if (!(m = dbus_message_new_method_call(
1197 "org.freedesktop.systemd1",
1198 "/org/freedesktop/systemd1",
1199 "org.freedesktop.systemd1.Manager",
1201 log_error("Could not allocate message.");
1206 if (!dbus_message_append_args(m,
1207 DBUS_TYPE_STRING, &args[i],
1208 DBUS_TYPE_INVALID)) {
1209 log_error("Could not append arguments to message.");
1214 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1216 /* Hmm, cannot figure out anything about this unit... */
1220 dbus_error_free(&error);
1224 if (!dbus_message_get_args(reply, &error,
1225 DBUS_TYPE_OBJECT_PATH, &path,
1226 DBUS_TYPE_INVALID)) {
1227 log_error("Failed to parse reply: %s", error.message);
1232 dbus_message_unref(m);
1233 if (!(m = dbus_message_new_method_call(
1234 "org.freedesktop.systemd1",
1236 "org.freedesktop.DBus.Properties",
1238 log_error("Could not allocate message.");
1243 if (!dbus_message_append_args(m,
1244 DBUS_TYPE_STRING, &interface,
1245 DBUS_TYPE_STRING, &property,
1246 DBUS_TYPE_INVALID)) {
1247 log_error("Could not append arguments to message.");
1252 dbus_message_unref(reply);
1253 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1254 log_error("Failed to issue method call: %s", error.message);
1259 if (!dbus_message_iter_init(reply, &iter) ||
1260 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1261 log_error("Failed to parse reply.");
1266 dbus_message_iter_recurse(&iter, &sub);
1268 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1269 log_error("Failed to parse reply.");
1274 dbus_message_iter_get_basic(&sub, &state);
1279 if (streq(state, "active") || startswith(state, "reloading"))
1282 dbus_message_unref(m);
1283 dbus_message_unref(reply);
1289 dbus_message_unref(m);
1292 dbus_message_unref(reply);
1294 dbus_error_free(&error);
1299 typedef struct ExecStatusInfo {
1305 usec_t start_timestamp;
1306 usec_t exit_timestamp;
1311 LIST_FIELDS(struct ExecStatusInfo, exec);
1314 static void exec_status_info_free(ExecStatusInfo *i) {
1322 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
1323 uint64_t start_timestamp, exit_timestamp;
1324 DBusMessageIter sub2, sub3;
1328 int32_t code, status;
1334 if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
1337 dbus_message_iter_recurse(sub, &sub2);
1339 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
1342 if (!(i->path = strdup(path)))
1345 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
1346 dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
1350 dbus_message_iter_recurse(&sub2, &sub3);
1351 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1352 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1353 dbus_message_iter_next(&sub3);
1358 if (!(i->argv = new0(char*, n+1)))
1362 dbus_message_iter_recurse(&sub2, &sub3);
1363 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1366 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1367 dbus_message_iter_get_basic(&sub3, &s);
1368 dbus_message_iter_next(&sub3);
1370 if (!(i->argv[n++] = strdup(s)))
1374 if (!dbus_message_iter_next(&sub2) ||
1375 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
1376 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
1377 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
1378 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
1379 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
1380 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
1384 i->start_timestamp = (usec_t) start_timestamp;
1385 i->exit_timestamp = (usec_t) exit_timestamp;
1386 i->pid = (pid_t) pid;
1393 typedef struct UnitStatusInfo {
1395 const char *load_state;
1396 const char *active_state;
1397 const char *sub_state;
1399 const char *description;
1401 const char *fragment_path;
1402 const char *default_control_group;
1404 bool need_daemon_reload;
1409 const char *status_text;
1412 usec_t start_timestamp;
1413 usec_t exit_timestamp;
1415 int exit_code, exit_status;
1418 unsigned n_accepted;
1419 unsigned n_connections;
1423 const char *sysfs_path;
1425 /* Mount, Automount */
1431 LIST_HEAD(ExecStatusInfo, exec);
1434 static void print_status_info(UnitStatusInfo *i) {
1439 /* This shows pretty information about a unit. See
1440 * print_property() for a low-level property printer */
1442 printf("%s", strna(i->id));
1444 if (i->description && !streq_ptr(i->id, i->description))
1445 printf(" - %s", i->description);
1449 if (i->fragment_path)
1450 printf("\t Loaded: %s (%s)\n", strna(i->load_state), i->fragment_path);
1451 else if (streq_ptr(i->load_state, "failed"))
1452 printf("\t Loaded: %s%s%s\n",
1453 ansi_highlight(true),
1454 strna(i->load_state),
1455 ansi_highlight(false));
1457 printf("\t Loaded: %s\n", strna(i->load_state));
1459 if (streq_ptr(i->active_state, "maintenance")) {
1460 if (streq_ptr(i->active_state, i->sub_state))
1461 printf("\t Active: %s%s%s\n",
1462 ansi_highlight(true),
1463 strna(i->active_state),
1464 ansi_highlight(false));
1466 printf("\t Active: %s%s (%s)%s\n",
1467 ansi_highlight(true),
1468 strna(i->active_state),
1469 strna(i->sub_state),
1470 ansi_highlight(false));
1472 if (streq_ptr(i->active_state, i->sub_state))
1473 printf("\t Active: %s\n",
1474 strna(i->active_state));
1476 printf("\t Active: %s (%s)\n",
1477 strna(i->active_state),
1478 strna(i->sub_state));
1482 printf("\t Device: %s\n", i->sysfs_path);
1484 printf("\t Where: %s\n", i->where);
1486 printf("\t What: %s\n", i->what);
1489 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
1491 LIST_FOREACH(exec, p, i->exec) {
1494 /* Only show exited processes here */
1498 t = strv_join(p->argv, " ");
1499 printf("\t Exited: %u (%s, code=%s, ", p->pid, strna(t), sigchld_code_to_string(p->code));
1502 if (p->code == CLD_EXITED)
1503 printf("status=%i", p->status);
1505 printf("signal=%s", signal_to_string(p->status));
1508 if (i->main_pid == p->pid &&
1509 i->start_timestamp == p->start_timestamp &&
1510 i->exit_timestamp == p->start_timestamp)
1511 /* Let's not show this twice */
1514 if (p->pid == i->control_pid)
1518 if (i->main_pid > 0 || i->control_pid > 0) {
1521 if (i->main_pid > 0) {
1522 printf(" Main: %u", (unsigned) i->main_pid);
1526 get_process_name(i->main_pid, &t);
1532 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
1534 if (i->exit_code == CLD_EXITED)
1535 printf("status=%i", i->exit_status);
1537 printf("signal=%s", signal_to_string(i->exit_status));
1541 if (i->main_pid > 0 && i->control_pid > 0)
1544 if (i->control_pid > 0) {
1547 printf(" Control: %u", (unsigned) i->control_pid);
1549 get_process_name(i->control_pid, &t);
1560 printf("\t Status: \"%s\"\n", i->status_text);
1562 if (i->default_control_group) {
1565 printf("\t CGroup: %s\n", i->default_control_group);
1567 if ((c = columns()) > 18)
1572 show_cgroup_by_path(i->default_control_group, "\t\t ", c);
1575 if (i->need_daemon_reload)
1576 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
1577 ansi_highlight(true),
1578 ansi_highlight(false),
1579 arg_session ? "--session" : "--system");
1582 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
1584 switch (dbus_message_iter_get_arg_type(iter)) {
1586 case DBUS_TYPE_STRING: {
1589 dbus_message_iter_get_basic(iter, &s);
1592 if (streq(name, "Id"))
1594 else if (streq(name, "LoadState"))
1596 else if (streq(name, "ActiveState"))
1597 i->active_state = s;
1598 else if (streq(name, "SubState"))
1600 else if (streq(name, "Description"))
1602 else if (streq(name, "FragmentPath"))
1603 i->fragment_path = s;
1604 else if (streq(name, "DefaultControlGroup"))
1605 i->default_control_group = s;
1606 else if (streq(name, "StatusText"))
1608 else if (streq(name, "SysFSPath"))
1610 else if (streq(name, "Where"))
1612 else if (streq(name, "What"))
1619 case DBUS_TYPE_BOOLEAN: {
1622 dbus_message_iter_get_basic(iter, &b);
1624 if (streq(name, "Accept"))
1626 else if (streq(name, "NeedDaemonReload"))
1627 i->need_daemon_reload = b;
1632 case DBUS_TYPE_UINT32: {
1635 dbus_message_iter_get_basic(iter, &u);
1637 if (streq(name, "MainPID")) {
1639 i->main_pid = (pid_t) u;
1642 } else if (streq(name, "ControlPID"))
1643 i->control_pid = (pid_t) u;
1644 else if (streq(name, "ExecMainPID")) {
1646 i->main_pid = (pid_t) u;
1647 } else if (streq(name, "NAccepted"))
1649 else if (streq(name, "NConnections"))
1650 i->n_connections = u;
1655 case DBUS_TYPE_INT32: {
1658 dbus_message_iter_get_basic(iter, &j);
1660 if (streq(name, "ExecMainCode"))
1661 i->exit_code = (int) j;
1662 else if (streq(name, "ExecMainStatus"))
1663 i->exit_status = (int) j;
1668 case DBUS_TYPE_UINT64: {
1671 dbus_message_iter_get_basic(iter, &u);
1673 if (streq(name, "ExecMainStartTimestamp"))
1674 i->start_timestamp = (usec_t) u;
1675 else if (streq(name, "ExecMainExitTimestamp"))
1676 i->exit_timestamp = (usec_t) u;
1681 case DBUS_TYPE_ARRAY: {
1683 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
1684 startswith(name, "Exec")) {
1685 DBusMessageIter sub;
1687 dbus_message_iter_recurse(iter, &sub);
1688 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1689 ExecStatusInfo *info;
1692 if (!(info = new0(ExecStatusInfo, 1)))
1695 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
1700 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
1702 dbus_message_iter_next(&sub);
1713 static int print_property(const char *name, DBusMessageIter *iter) {
1717 /* This is a low-level property printer, see
1718 * print_status_info() for the nicer output */
1720 if (arg_property && !strv_find(arg_property, name))
1723 switch (dbus_message_iter_get_arg_type(iter)) {
1725 case DBUS_TYPE_STRING: {
1727 dbus_message_iter_get_basic(iter, &s);
1729 if (arg_all || s[0])
1730 printf("%s=%s\n", name, s);
1735 case DBUS_TYPE_BOOLEAN: {
1737 dbus_message_iter_get_basic(iter, &b);
1738 printf("%s=%s\n", name, yes_no(b));
1743 case DBUS_TYPE_UINT64: {
1745 dbus_message_iter_get_basic(iter, &u);
1747 /* Yes, heuristics! But we can change this check
1748 * should it turn out to not be sufficient */
1750 if (strstr(name, "Timestamp")) {
1751 char timestamp[FORMAT_TIMESTAMP_MAX], *t;
1753 if ((t = format_timestamp(timestamp, sizeof(timestamp), u)) || arg_all)
1754 printf("%s=%s\n", name, strempty(t));
1755 } else if (strstr(name, "USec")) {
1756 char timespan[FORMAT_TIMESPAN_MAX];
1758 printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u));
1760 printf("%s=%llu\n", name, (unsigned long long) u);
1765 case DBUS_TYPE_UINT32: {
1767 dbus_message_iter_get_basic(iter, &u);
1769 if (strstr(name, "UMask") || strstr(name, "Mode"))
1770 printf("%s=%04o\n", name, u);
1772 printf("%s=%u\n", name, (unsigned) u);
1777 case DBUS_TYPE_INT32: {
1779 dbus_message_iter_get_basic(iter, &i);
1781 printf("%s=%i\n", name, (int) i);
1785 case DBUS_TYPE_STRUCT: {
1786 DBusMessageIter sub;
1787 dbus_message_iter_recurse(iter, &sub);
1789 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
1792 dbus_message_iter_get_basic(&sub, &u);
1795 printf("%s=%u\n", name, (unsigned) u);
1797 printf("%s=\n", name);
1800 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
1803 dbus_message_iter_get_basic(&sub, &s);
1805 if (arg_all || s[0])
1806 printf("%s=%s\n", name, s);
1814 case DBUS_TYPE_ARRAY:
1816 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
1817 DBusMessageIter sub;
1820 dbus_message_iter_recurse(iter, &sub);
1822 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1823 printf("%s=", name);
1825 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1828 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
1829 dbus_message_iter_get_basic(&sub, &s);
1830 printf("%s%s", space ? " " : "", s);
1833 dbus_message_iter_next(&sub);
1841 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_BYTE) {
1842 DBusMessageIter sub;
1844 dbus_message_iter_recurse(iter, &sub);
1846 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1847 printf("%s=", name);
1849 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1852 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE);
1853 dbus_message_iter_get_basic(&sub, &u);
1856 dbus_message_iter_next(&sub);
1864 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
1865 DBusMessageIter sub, sub2;
1867 dbus_message_iter_recurse(iter, &sub);
1868 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1869 const char *type, *path;
1871 dbus_message_iter_recurse(&sub, &sub2);
1873 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
1874 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
1875 printf("%s=%s\n", type, path);
1877 dbus_message_iter_next(&sub);
1882 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
1883 DBusMessageIter sub, sub2;
1885 dbus_message_iter_recurse(iter, &sub);
1886 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1888 uint64_t value, next_elapse;
1890 dbus_message_iter_recurse(&sub, &sub2);
1892 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
1893 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
1894 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
1895 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
1897 printf("%s={ value=%s ; next_elapse=%s }\n",
1899 format_timespan(timespan1, sizeof(timespan1), value),
1900 format_timespan(timespan2, sizeof(timespan2), next_elapse));
1903 dbus_message_iter_next(&sub);
1908 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
1909 DBusMessageIter sub;
1911 dbus_message_iter_recurse(iter, &sub);
1912 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1913 ExecStatusInfo info;
1916 if (exec_status_info_deserialize(&sub, &info) >= 0) {
1917 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
1920 t = strv_join(info.argv, " ");
1922 printf("%s={ path=%s ; argv[]=%s ; ignore=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
1926 yes_no(info.ignore),
1927 strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
1928 strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
1929 (unsigned) info. pid,
1930 sigchld_code_to_string(info.code),
1932 info.code == CLD_EXITED ? "" : "/",
1933 strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
1939 strv_free(info.argv);
1941 dbus_message_iter_next(&sub);
1951 printf("%s=[unprintable]\n", name);
1956 static int show_one(DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
1957 DBusMessage *m = NULL, *reply = NULL;
1958 const char *interface = "";
1961 DBusMessageIter iter, sub, sub2, sub3;
1962 UnitStatusInfo info;
1970 dbus_error_init(&error);
1972 if (!(m = dbus_message_new_method_call(
1973 "org.freedesktop.systemd1",
1975 "org.freedesktop.DBus.Properties",
1977 log_error("Could not allocate message.");
1982 if (!dbus_message_append_args(m,
1983 DBUS_TYPE_STRING, &interface,
1984 DBUS_TYPE_INVALID)) {
1985 log_error("Could not append arguments to message.");
1990 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1991 log_error("Failed to issue method call: %s", error.message);
1996 if (!dbus_message_iter_init(reply, &iter) ||
1997 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1998 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
1999 log_error("Failed to parse reply.");
2004 dbus_message_iter_recurse(&iter, &sub);
2011 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2014 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
2015 log_error("Failed to parse reply.");
2020 dbus_message_iter_recurse(&sub, &sub2);
2022 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
2023 log_error("Failed to parse reply.");
2028 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
2029 log_error("Failed to parse reply.");
2034 dbus_message_iter_recurse(&sub2, &sub3);
2036 if (show_properties)
2037 r = print_property(name, &sub3);
2039 r = status_property(name, &sub3, &info);
2042 log_error("Failed to parse reply.");
2047 dbus_message_iter_next(&sub);
2050 if (!show_properties)
2051 print_status_info(&info);
2053 while ((p = info.exec)) {
2054 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
2055 exec_status_info_free(p);
2062 dbus_message_unref(m);
2065 dbus_message_unref(reply);
2067 dbus_error_free(&error);
2072 static int show(DBusConnection *bus, char **args, unsigned n) {
2073 DBusMessage *m = NULL, *reply = NULL;
2077 bool show_properties, new_line = false;
2082 dbus_error_init(&error);
2084 show_properties = !streq(args[0], "status");
2086 if (show_properties && n <= 1) {
2087 /* If not argument is specified inspect the manager
2090 r = show_one(bus, "/org/freedesktop/systemd1", show_properties, &new_line);
2094 for (i = 1; i < n; i++) {
2095 const char *path = NULL;
2098 if (!show_properties || safe_atou32(args[i], &id) < 0) {
2100 if (!(m = dbus_message_new_method_call(
2101 "org.freedesktop.systemd1",
2102 "/org/freedesktop/systemd1",
2103 "org.freedesktop.systemd1.Manager",
2105 log_error("Could not allocate message.");
2110 if (!dbus_message_append_args(m,
2111 DBUS_TYPE_STRING, &args[i],
2112 DBUS_TYPE_INVALID)) {
2113 log_error("Could not append arguments to message.");
2118 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2120 if (!dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
2121 log_error("Failed to issue method call: %s", error.message);
2126 dbus_error_free(&error);
2128 dbus_message_unref(m);
2129 if (!(m = dbus_message_new_method_call(
2130 "org.freedesktop.systemd1",
2131 "/org/freedesktop/systemd1",
2132 "org.freedesktop.systemd1.Manager",
2134 log_error("Could not allocate message.");
2139 if (!dbus_message_append_args(m,
2140 DBUS_TYPE_STRING, &args[i],
2141 DBUS_TYPE_INVALID)) {
2142 log_error("Could not append arguments to message.");
2147 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2148 log_error("Failed to issue method call: %s", error.message);
2156 if (!(m = dbus_message_new_method_call(
2157 "org.freedesktop.systemd1",
2158 "/org/freedesktop/systemd1",
2159 "org.freedesktop.systemd1.Manager",
2161 log_error("Could not allocate message.");
2166 if (!dbus_message_append_args(m,
2167 DBUS_TYPE_UINT32, &id,
2168 DBUS_TYPE_INVALID)) {
2169 log_error("Could not append arguments to message.");
2174 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2175 log_error("Failed to issue method call: %s", error.message);
2181 if (!dbus_message_get_args(reply, &error,
2182 DBUS_TYPE_OBJECT_PATH, &path,
2183 DBUS_TYPE_INVALID)) {
2184 log_error("Failed to parse reply: %s", error.message);
2189 if ((r = show_one(bus, path, show_properties, &new_line)) < 0)
2192 dbus_message_unref(m);
2193 dbus_message_unref(reply);
2201 dbus_message_unref(m);
2204 dbus_message_unref(reply);
2206 dbus_error_free(&error);
2211 static DBusHandlerResult monitor_filter(DBusConnection *connection, DBusMessage *message, void *data) {
2213 DBusMessage *m = NULL, *reply = NULL;
2218 dbus_error_init(&error);
2220 log_debug("Got D-Bus request: %s.%s() on %s",
2221 dbus_message_get_interface(message),
2222 dbus_message_get_member(message),
2223 dbus_message_get_path(message));
2225 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
2226 log_error("Warning! D-Bus connection terminated.");
2227 dbus_connection_close(connection);
2229 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitNew") ||
2230 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitRemoved")) {
2231 const char *id, *path;
2233 if (!dbus_message_get_args(message, &error,
2234 DBUS_TYPE_STRING, &id,
2235 DBUS_TYPE_OBJECT_PATH, &path,
2237 log_error("Failed to parse message: %s", error.message);
2238 else if (streq(dbus_message_get_member(message), "UnitNew"))
2239 printf("Unit %s added.\n", id);
2241 printf("Unit %s removed.\n", id);
2243 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobNew") ||
2244 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
2248 if (!dbus_message_get_args(message, &error,
2249 DBUS_TYPE_UINT32, &id,
2250 DBUS_TYPE_OBJECT_PATH, &path,
2252 log_error("Failed to parse message: %s", error.message);
2253 else if (streq(dbus_message_get_member(message), "JobNew"))
2254 printf("Job %u added.\n", id);
2256 printf("Job %u removed.\n", id);
2259 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Unit", "Changed") ||
2260 dbus_message_is_signal(message, "org.freedesktop.systemd1.Job", "Changed")) {
2262 const char *path, *interface, *property = "Id";
2263 DBusMessageIter iter, sub;
2265 path = dbus_message_get_path(message);
2266 interface = dbus_message_get_interface(message);
2268 if (!(m = dbus_message_new_method_call(
2269 "org.freedesktop.systemd1",
2271 "org.freedesktop.DBus.Properties",
2273 log_error("Could not allocate message.");
2277 if (!dbus_message_append_args(m,
2278 DBUS_TYPE_STRING, &interface,
2279 DBUS_TYPE_STRING, &property,
2280 DBUS_TYPE_INVALID)) {
2281 log_error("Could not append arguments to message.");
2285 if (!(reply = dbus_connection_send_with_reply_and_block(connection, m, -1, &error))) {
2286 log_error("Failed to issue method call: %s", error.message);
2290 if (!dbus_message_iter_init(reply, &iter) ||
2291 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2292 log_error("Failed to parse reply.");
2296 dbus_message_iter_recurse(&iter, &sub);
2298 if (streq(interface, "org.freedesktop.systemd1.Unit")) {
2301 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
2302 log_error("Failed to parse reply.");
2306 dbus_message_iter_get_basic(&sub, &id);
2307 printf("Unit %s changed.\n", id);
2311 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_UINT32) {
2312 log_error("Failed to parse reply.");
2316 dbus_message_iter_get_basic(&sub, &id);
2317 printf("Job %u changed.\n", id);
2323 dbus_message_unref(m);
2326 dbus_message_unref(reply);
2328 dbus_error_free(&error);
2329 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
2333 dbus_message_unref(m);
2336 dbus_message_unref(reply);
2338 dbus_error_free(&error);
2339 return DBUS_HANDLER_RESULT_NEED_MEMORY;
2342 static int monitor(DBusConnection *bus, char **args, unsigned n) {
2343 DBusMessage *m = NULL, *reply = NULL;
2347 dbus_error_init(&error);
2350 dbus_bus_add_match(bus,
2352 "sender='org.freedesktop.systemd1',"
2353 "interface='org.freedesktop.systemd1.Manager',"
2354 "path='/org/freedesktop/systemd1'",
2357 if (dbus_error_is_set(&error)) {
2358 log_error("Failed to add match: %s", error.message);
2363 dbus_bus_add_match(bus,
2365 "sender='org.freedesktop.systemd1',"
2366 "interface='org.freedesktop.systemd1.Unit',"
2370 if (dbus_error_is_set(&error)) {
2371 log_error("Failed to add match: %s", error.message);
2376 dbus_bus_add_match(bus,
2378 "sender='org.freedesktop.systemd1',"
2379 "interface='org.freedesktop.systemd1.Job',"
2383 if (dbus_error_is_set(&error)) {
2384 log_error("Failed to add match: %s", error.message);
2390 if (!dbus_connection_add_filter(bus, monitor_filter, NULL, NULL)) {
2391 log_error("Failed to add filter.");
2396 if (!(m = dbus_message_new_method_call(
2397 "org.freedesktop.systemd1",
2398 "/org/freedesktop/systemd1",
2399 "org.freedesktop.systemd1.Manager",
2401 log_error("Could not allocate message.");
2406 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2407 log_error("Failed to issue method call: %s", error.message);
2412 while (dbus_connection_read_write_dispatch(bus, -1))
2419 /* This is slightly dirty, since we don't undo the filter or the matches. */
2422 dbus_message_unref(m);
2425 dbus_message_unref(reply);
2427 dbus_error_free(&error);
2432 static int dump(DBusConnection *bus, char **args, unsigned n) {
2433 DBusMessage *m = NULL, *reply = NULL;
2438 dbus_error_init(&error);
2440 if (!(m = dbus_message_new_method_call(
2441 "org.freedesktop.systemd1",
2442 "/org/freedesktop/systemd1",
2443 "org.freedesktop.systemd1.Manager",
2445 log_error("Could not allocate message.");
2449 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2450 log_error("Failed to issue method call: %s", error.message);
2455 if (!dbus_message_get_args(reply, &error,
2456 DBUS_TYPE_STRING, &text,
2457 DBUS_TYPE_INVALID)) {
2458 log_error("Failed to parse reply: %s", error.message);
2463 fputs(text, stdout);
2469 dbus_message_unref(m);
2472 dbus_message_unref(reply);
2474 dbus_error_free(&error);
2479 static int snapshot(DBusConnection *bus, char **args, unsigned n) {
2480 DBusMessage *m = NULL, *reply = NULL;
2483 const char *name = "", *path, *id;
2484 dbus_bool_t cleanup = FALSE;
2485 DBusMessageIter iter, sub;
2487 *interface = "org.freedesktop.systemd1.Unit",
2490 dbus_error_init(&error);
2492 if (!(m = dbus_message_new_method_call(
2493 "org.freedesktop.systemd1",
2494 "/org/freedesktop/systemd1",
2495 "org.freedesktop.systemd1.Manager",
2496 "CreateSnapshot"))) {
2497 log_error("Could not allocate message.");
2504 if (!dbus_message_append_args(m,
2505 DBUS_TYPE_STRING, &name,
2506 DBUS_TYPE_BOOLEAN, &cleanup,
2507 DBUS_TYPE_INVALID)) {
2508 log_error("Could not append arguments to message.");
2513 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2514 log_error("Failed to issue method call: %s", error.message);
2519 if (!dbus_message_get_args(reply, &error,
2520 DBUS_TYPE_OBJECT_PATH, &path,
2521 DBUS_TYPE_INVALID)) {
2522 log_error("Failed to parse reply: %s", error.message);
2527 dbus_message_unref(m);
2528 if (!(m = dbus_message_new_method_call(
2529 "org.freedesktop.systemd1",
2531 "org.freedesktop.DBus.Properties",
2533 log_error("Could not allocate message.");
2537 if (!dbus_message_append_args(m,
2538 DBUS_TYPE_STRING, &interface,
2539 DBUS_TYPE_STRING, &property,
2540 DBUS_TYPE_INVALID)) {
2541 log_error("Could not append arguments to message.");
2546 dbus_message_unref(reply);
2547 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2548 log_error("Failed to issue method call: %s", error.message);
2553 if (!dbus_message_iter_init(reply, &iter) ||
2554 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2555 log_error("Failed to parse reply.");
2560 dbus_message_iter_recurse(&iter, &sub);
2562 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
2563 log_error("Failed to parse reply.");
2568 dbus_message_iter_get_basic(&sub, &id);
2576 dbus_message_unref(m);
2579 dbus_message_unref(reply);
2581 dbus_error_free(&error);
2586 static int delete_snapshot(DBusConnection *bus, char **args, unsigned n) {
2587 DBusMessage *m = NULL, *reply = NULL;
2595 dbus_error_init(&error);
2597 for (i = 1; i < n; i++) {
2598 const char *path = NULL;
2600 if (!(m = dbus_message_new_method_call(
2601 "org.freedesktop.systemd1",
2602 "/org/freedesktop/systemd1",
2603 "org.freedesktop.systemd1.Manager",
2605 log_error("Could not allocate message.");
2610 if (!dbus_message_append_args(m,
2611 DBUS_TYPE_STRING, &args[i],
2612 DBUS_TYPE_INVALID)) {
2613 log_error("Could not append arguments to message.");
2618 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2619 log_error("Failed to issue method call: %s", error.message);
2624 if (!dbus_message_get_args(reply, &error,
2625 DBUS_TYPE_OBJECT_PATH, &path,
2626 DBUS_TYPE_INVALID)) {
2627 log_error("Failed to parse reply: %s", error.message);
2632 dbus_message_unref(m);
2633 if (!(m = dbus_message_new_method_call(
2634 "org.freedesktop.systemd1",
2636 "org.freedesktop.systemd1.Snapshot",
2638 log_error("Could not allocate message.");
2643 dbus_message_unref(reply);
2644 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2645 log_error("Failed to issue method call: %s", error.message);
2650 dbus_message_unref(m);
2651 dbus_message_unref(reply);
2659 dbus_message_unref(m);
2662 dbus_message_unref(reply);
2664 dbus_error_free(&error);
2669 static int daemon_reload(DBusConnection *bus, char **args, unsigned n) {
2670 DBusMessage *m = NULL, *reply = NULL;
2675 dbus_error_init(&error);
2677 if (arg_action == ACTION_RELOAD)
2679 else if (arg_action == ACTION_REEXEC)
2680 method = "Reexecute";
2682 assert(arg_action == ACTION_SYSTEMCTL);
2685 streq(args[0], "clear-jobs") ||
2686 streq(args[0], "cancel") ? "ClearJobs" :
2687 streq(args[0], "daemon-reexec") ? "Reexecute" :
2688 streq(args[0], "reset-maintenance") ? "ResetMaintenance" :
2689 streq(args[0], "daemon-exit") ? "Exit" :
2693 if (!(m = dbus_message_new_method_call(
2694 "org.freedesktop.systemd1",
2695 "/org/freedesktop/systemd1",
2696 "org.freedesktop.systemd1.Manager",
2698 log_error("Could not allocate message.");
2702 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2704 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
2705 /* There's always a fallback possible for
2706 * legacy actions. */
2711 log_error("Failed to issue method call: %s", error.message);
2720 dbus_message_unref(m);
2723 dbus_message_unref(reply);
2725 dbus_error_free(&error);
2730 static int reset_maintenance(DBusConnection *bus, char **args, unsigned n) {
2731 DBusMessage *m = NULL, *reply = NULL;
2737 dbus_error_init(&error);
2740 return daemon_reload(bus, args, n);
2742 for (i = 1; i < n; i++) {
2744 if (!(m = dbus_message_new_method_call(
2745 "org.freedesktop.systemd1",
2746 "/org/freedesktop/systemd1",
2747 "org.freedesktop.systemd1.Manager",
2748 "ResetMaintenanceUnit"))) {
2749 log_error("Could not allocate message.");
2754 if (!dbus_message_append_args(m,
2755 DBUS_TYPE_STRING, args + i,
2756 DBUS_TYPE_INVALID)) {
2757 log_error("Could not append arguments to message.");
2762 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2763 log_error("Failed to issue method call: %s", error.message);
2768 dbus_message_unref(m);
2769 dbus_message_unref(reply);
2777 dbus_message_unref(m);
2780 dbus_message_unref(reply);
2782 dbus_error_free(&error);
2787 static int show_enviroment(DBusConnection *bus, char **args, unsigned n) {
2788 DBusMessage *m = NULL, *reply = NULL;
2790 DBusMessageIter iter, sub, sub2;
2793 *interface = "org.freedesktop.systemd1.Manager",
2794 *property = "Environment";
2796 dbus_error_init(&error);
2798 if (!(m = dbus_message_new_method_call(
2799 "org.freedesktop.systemd1",
2800 "/org/freedesktop/systemd1",
2801 "org.freedesktop.DBus.Properties",
2803 log_error("Could not allocate message.");
2807 if (!dbus_message_append_args(m,
2808 DBUS_TYPE_STRING, &interface,
2809 DBUS_TYPE_STRING, &property,
2810 DBUS_TYPE_INVALID)) {
2811 log_error("Could not append arguments to message.");
2816 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2817 log_error("Failed to issue method call: %s", error.message);
2822 if (!dbus_message_iter_init(reply, &iter) ||
2823 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2824 log_error("Failed to parse reply.");
2829 dbus_message_iter_recurse(&iter, &sub);
2831 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
2832 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
2833 log_error("Failed to parse reply.");
2838 dbus_message_iter_recurse(&sub, &sub2);
2840 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
2843 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
2844 log_error("Failed to parse reply.");
2849 dbus_message_iter_get_basic(&sub2, &text);
2850 printf("%s\n", text);
2852 dbus_message_iter_next(&sub2);
2859 dbus_message_unref(m);
2862 dbus_message_unref(reply);
2864 dbus_error_free(&error);
2869 static int set_environment(DBusConnection *bus, char **args, unsigned n) {
2870 DBusMessage *m = NULL, *reply = NULL;
2874 DBusMessageIter iter, sub;
2877 dbus_error_init(&error);
2879 method = streq(args[0], "set-environment")
2881 : "UnsetEnvironment";
2883 if (!(m = dbus_message_new_method_call(
2884 "org.freedesktop.systemd1",
2885 "/org/freedesktop/systemd1",
2886 "org.freedesktop.systemd1.Manager",
2889 log_error("Could not allocate message.");
2893 dbus_message_iter_init_append(m, &iter);
2895 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
2896 log_error("Could not append arguments to message.");
2901 for (i = 1; i < n; i++)
2902 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &args[i])) {
2903 log_error("Could not append arguments to message.");
2908 if (!dbus_message_iter_close_container(&iter, &sub)) {
2909 log_error("Could not append arguments to message.");
2914 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2915 log_error("Failed to issue method call: %s", error.message);
2924 dbus_message_unref(m);
2927 dbus_message_unref(reply);
2929 dbus_error_free(&error);
2942 static Hashmap *will_install = NULL, *have_installed = NULL;
2943 static Set *remove_symlinks_to = NULL;
2945 static void install_info_free(InstallInfo *i) {
2950 strv_free(i->aliases);
2951 strv_free(i->wanted_by);
2955 static void install_info_hashmap_free(Hashmap *m) {
2958 while ((i = hashmap_steal_first(m)))
2959 install_info_free(i);
2964 static bool unit_name_valid(const char *name) {
2966 /* This is a minimal version of unit_name_valid() from
2972 if (ignore_file(name))
2978 static int install_info_add(const char *name) {
2982 assert(will_install);
2984 if (!unit_name_valid(name))
2987 if (hashmap_get(have_installed, name) ||
2988 hashmap_get(will_install, name))
2991 if (!(i = new0(InstallInfo, 1))) {
2996 if (!(i->name = strdup(name))) {
3001 if ((r = hashmap_put(will_install, i->name, i)) < 0)
3008 install_info_free(i);
3013 static int config_parse_also(
3014 const char *filename,
3016 const char *section,
3030 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
3034 if (!(n = strndup(w, l)))
3037 r = install_info_add(n);
3047 static int mark_symlink_for_removal(const char *p) {
3052 assert(path_is_absolute(p));
3054 if (!remove_symlinks_to)
3057 if (!(n = strdup(p)))
3060 path_kill_slashes(n);
3062 if ((r = set_put(remove_symlinks_to, n)) < 0) {
3064 return r == -EEXIST ? 0 : r;
3070 static int remove_marked_symlinks_fd(int fd, const char *config_path, const char *root, bool *deleted) {
3079 if (!(d = fdopendir(fd))) {
3080 close_nointr_nofail(fd);
3086 while ((de = readdir(d))) {
3087 bool is_dir = false, is_link = false;
3089 if (ignore_file(de->d_name))
3092 if (de->d_type == DT_LNK)
3094 else if (de->d_type == DT_DIR)
3096 else if (de->d_type == DT_UNKNOWN) {
3099 if (fstatat(fd, de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) {
3100 log_error("Failed to stat %s/%s: %m", root, de->d_name);
3107 is_link = S_ISLNK(st.st_mode);
3108 is_dir = S_ISDIR(st.st_mode);
3116 if ((nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW)) < 0) {
3117 log_error("Failed to open %s/%s: %m", root, de->d_name);
3124 if (asprintf(&p, "%s/%s", root, de->d_name) < 0) {
3125 log_error("Failed to allocate directory string.");
3126 close_nointr_nofail(nfd);
3131 /* This will close nfd, regardless whether it succeeds or not */
3132 q = remove_marked_symlinks_fd(nfd, config_path, p, deleted);
3138 } else if (is_link) {
3142 if (asprintf(&p, "%s/%s", root, de->d_name) < 0) {
3143 log_error("Failed to allocate symlink string.");
3148 if ((q = readlink_and_make_absolute(p, &dest)) < 0) {
3149 log_error("Cannot read symlink %s: %s", p, strerror(-q));
3157 if ((c = canonicalize_file_name(dest))) {
3158 /* This might fail if the destination
3159 * is already removed */