1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include "sd-messages.h"
31 #include "path-util.h"
33 #include "fileio-label.h"
36 #include "unit-name.h"
38 #include "bus-common-errors.h"
39 #include "time-util.h"
40 #include "cgroup-util.h"
41 #include "machine-image.h"
42 #include "image-dbus.h"
44 #include "machine-dbus.h"
46 static int method_get_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
47 _cleanup_free_ char *p = NULL;
48 Manager *m = userdata;
57 r = sd_bus_message_read(message, "s", &name);
61 machine = hashmap_get(m->machines, name);
63 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
65 p = machine_bus_path(machine);
69 return sd_bus_reply_method_return(message, "o", p);
72 static int method_get_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
73 _cleanup_free_ char *p = NULL;
74 Manager *m = userdata;
82 r = sd_bus_message_read(message, "s", &name);
86 r = image_find(name, NULL);
88 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
92 p = image_bus_path(name);
96 return sd_bus_reply_method_return(message, "o", p);
99 static int method_get_machine_by_pid(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
100 _cleanup_free_ char *p = NULL;
101 Manager *m = userdata;
102 Machine *machine = NULL;
110 assert_cc(sizeof(pid_t) == sizeof(uint32_t));
112 r = sd_bus_message_read(message, "u", &pid);
117 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
119 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
123 r = sd_bus_creds_get_pid(creds, &pid);
128 r = manager_get_machine_by_pid(m, pid, &machine);
132 return sd_bus_error_setf(error, BUS_ERROR_NO_MACHINE_FOR_PID, "PID "PID_FMT" does not belong to any known machine", pid);
134 p = machine_bus_path(machine);
138 return sd_bus_reply_method_return(message, "o", p);
141 static int method_list_machines(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
142 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
143 Manager *m = userdata;
152 r = sd_bus_message_new_method_return(message, &reply);
154 return sd_bus_error_set_errno(error, r);
156 r = sd_bus_message_open_container(reply, 'a', "(ssso)");
158 return sd_bus_error_set_errno(error, r);
160 HASHMAP_FOREACH(machine, m->machines, i) {
161 _cleanup_free_ char *p = NULL;
163 p = machine_bus_path(machine);
167 r = sd_bus_message_append(reply, "(ssso)",
169 strempty(machine_class_to_string(machine->class)),
173 return sd_bus_error_set_errno(error, r);
176 r = sd_bus_message_close_container(reply);
178 return sd_bus_error_set_errno(error, r);
180 return sd_bus_send(bus, reply, NULL);
183 static int method_create_or_register_machine(Manager *manager, sd_bus_message *message, bool read_network, Machine **_m, sd_bus_error *error) {
184 const char *name, *service, *class, *root_directory;
185 const int32_t *netif = NULL;
191 size_t n, n_netif = 0;
198 r = sd_bus_message_read(message, "s", &name);
201 if (!machine_name_is_valid(name))
202 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine name");
204 r = sd_bus_message_read_array(message, 'y', &v, &n);
212 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine ID parameter");
214 r = sd_bus_message_read(message, "ssus", &service, &class, &leader, &root_directory);
221 r = sd_bus_message_read_array(message, 'i', (const void**) &netif, &n_netif);
225 n_netif /= sizeof(int32_t);
227 for (i = 0; i < n_netif; i++) {
229 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid network interface index %i", netif[i]);
234 c = _MACHINE_CLASS_INVALID;
236 c = machine_class_from_string(class);
238 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine class parameter");
242 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
244 if (!isempty(root_directory) && !path_is_absolute(root_directory))
245 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Root directory must be empty or an absolute path");
248 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
250 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
254 assert_cc(sizeof(uint32_t) == sizeof(pid_t));
256 r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
261 if (hashmap_get(manager->machines, name))
262 return sd_bus_error_setf(error, BUS_ERROR_MACHINE_EXISTS, "Machine '%s' already exists", name);
264 r = manager_add_machine(manager, name, &m);
272 if (!isempty(service)) {
273 m->service = strdup(service);
280 if (!isempty(root_directory)) {
281 m->root_directory = strdup(root_directory);
282 if (!m->root_directory) {
289 assert_cc(sizeof(int32_t) == sizeof(int));
290 m->netif = memdup(netif, sizeof(int32_t) * n_netif);
296 m->n_netif = n_netif;
304 machine_add_to_gc_queue(m);
308 static int method_create_machine_internal(sd_bus *bus, sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
309 Manager *manager = userdata;
313 r = method_create_or_register_machine(manager, message, read_network, &m, error);
317 r = sd_bus_message_enter_container(message, 'a', "(sv)");
321 r = machine_start(m, message, error);
325 m->create_message = sd_bus_message_ref(message);
329 machine_add_to_gc_queue(m);
333 static int method_create_machine_with_network(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
334 return method_create_machine_internal(bus, message, true, userdata, error);
337 static int method_create_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
338 return method_create_machine_internal(bus, message, false, userdata, error);
341 static int method_register_machine_internal(sd_bus *bus, sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
342 Manager *manager = userdata;
343 _cleanup_free_ char *p = NULL;
347 r = method_create_or_register_machine(manager, message, read_network, &m, error);
351 r = cg_pid_get_unit(m->leader, &m->unit);
353 r = sd_bus_error_set_errnof(error, r, "Failed to determine unit of process "PID_FMT" : %s", m->leader, strerror(-r));
357 r = machine_start(m, NULL, error);
361 p = machine_bus_path(m);
367 return sd_bus_reply_method_return(message, "o", p);
370 machine_add_to_gc_queue(m);
374 static int method_register_machine_with_network(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
375 return method_register_machine_internal(bus, message, true, userdata, error);
378 static int method_register_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
379 return method_register_machine_internal(bus, message, false, userdata, error);
382 static int method_terminate_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
383 Manager *m = userdata;
392 r = sd_bus_message_read(message, "s", &name);
394 return sd_bus_error_set_errno(error, r);
396 machine = hashmap_get(m->machines, name);
398 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
400 return bus_machine_method_terminate(bus, message, machine, error);
403 static int method_kill_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
404 Manager *m = userdata;
413 r = sd_bus_message_read(message, "s", &name);
415 return sd_bus_error_set_errno(error, r);
417 machine = hashmap_get(m->machines, name);
419 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
421 return bus_machine_method_kill(bus, message, machine, error);
424 static int method_get_machine_addresses(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
425 Manager *m = userdata;
434 r = sd_bus_message_read(message, "s", &name);
436 return sd_bus_error_set_errno(error, r);
438 machine = hashmap_get(m->machines, name);
440 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
442 return bus_machine_method_get_addresses(bus, message, machine, error);
445 static int method_get_machine_os_release(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
446 Manager *m = userdata;
455 r = sd_bus_message_read(message, "s", &name);
457 return sd_bus_error_set_errno(error, r);
459 machine = hashmap_get(m->machines, name);
461 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
463 return bus_machine_method_get_os_release(bus, message, machine, error);
466 static int method_list_images(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
467 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
468 _cleanup_(image_hashmap_freep) Hashmap *images = NULL;
469 Manager *m = userdata;
478 images = hashmap_new(&string_hash_ops);
482 r = image_discover(images);
486 r = sd_bus_message_new_method_return(message, &reply);
490 r = sd_bus_message_open_container(reply, 'a', "(ssbttto)");
494 HASHMAP_FOREACH(image, images, i) {
495 _cleanup_free_ char *p = NULL;
497 p = image_bus_path(image->name);
501 r = sd_bus_message_append(reply, "(ssbttto)",
503 image_type_to_string(image->type),
513 r = sd_bus_message_close_container(reply);
517 return sd_bus_send(bus, reply, NULL);
520 static int method_open_machine_pty(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
521 Manager *m = userdata;
530 r = sd_bus_message_read(message, "s", &name);
532 return sd_bus_error_set_errno(error, r);
534 machine = hashmap_get(m->machines, name);
536 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
538 return bus_machine_method_open_pty(bus, message, machine, error);
541 static int method_open_machine_login(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
542 Manager *m = userdata;
551 r = sd_bus_message_read(message, "s", &name);
555 machine = hashmap_get(m->machines, name);
557 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
559 return bus_machine_method_open_login(bus, message, machine, error);
562 static int method_remove_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
563 _cleanup_(image_unrefp) Image* i = NULL;
570 r = sd_bus_message_read(message, "s", &name);
574 if (!image_name_is_valid(name))
575 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
577 r = image_find(name, &i);
581 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
583 return bus_image_method_remove(bus, message, i, error);
586 static int method_rename_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
587 _cleanup_(image_unrefp) Image* i = NULL;
588 const char *old_name;
594 r = sd_bus_message_read(message, "s", &old_name);
598 if (!image_name_is_valid(old_name))
599 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", old_name);
601 r = image_find(old_name, &i);
605 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", old_name);
607 return bus_image_method_rename(bus, message, i, error);
610 static int method_clone_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
611 _cleanup_(image_unrefp) Image *i = NULL;
612 const char *old_name;
616 r = sd_bus_message_read(message, "s", &old_name);
620 if (!image_name_is_valid(old_name))
621 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", old_name);
623 r = image_find(old_name, &i);
627 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", old_name);
629 return bus_image_method_clone(bus, message, i, error);
632 static int method_mark_image_read_only(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
633 _cleanup_(image_unrefp) Image *i = NULL;
638 r = sd_bus_message_read(message, "s", &name);
642 if (!image_name_is_valid(name))
643 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
645 r = image_find(name, &i);
649 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
651 return bus_image_method_mark_read_only(bus, message, i, error);
654 const sd_bus_vtable manager_vtable[] = {
655 SD_BUS_VTABLE_START(0),
656 SD_BUS_METHOD("GetMachine", "s", "o", method_get_machine, SD_BUS_VTABLE_UNPRIVILEGED),
657 SD_BUS_METHOD("GetImage", "s", "o", method_get_image, SD_BUS_VTABLE_UNPRIVILEGED),
658 SD_BUS_METHOD("GetMachineByPID", "u", "o", method_get_machine_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
659 SD_BUS_METHOD("ListMachines", NULL, "a(ssso)", method_list_machines, SD_BUS_VTABLE_UNPRIVILEGED),
660 SD_BUS_METHOD("ListImages", NULL, "a(ssbttto)", method_list_images, SD_BUS_VTABLE_UNPRIVILEGED),
661 SD_BUS_METHOD("CreateMachine", "sayssusa(sv)", "o", method_create_machine, 0),
662 SD_BUS_METHOD("CreateMachineWithNetwork", "sayssusaia(sv)", "o", method_create_machine_with_network, 0),
663 SD_BUS_METHOD("RegisterMachine", "sayssus", "o", method_register_machine, 0),
664 SD_BUS_METHOD("RegisterMachineWithNetwork", "sayssusai", "o", method_register_machine_with_network, 0),
665 SD_BUS_METHOD("KillMachine", "ssi", NULL, method_kill_machine, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
666 SD_BUS_METHOD("TerminateMachine", "s", NULL, method_terminate_machine, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
667 SD_BUS_METHOD("GetMachineAddresses", "s", "a(iay)", method_get_machine_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
668 SD_BUS_METHOD("GetMachineOSRelease", "s", "a{ss}", method_get_machine_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
669 SD_BUS_METHOD("OpenMachinePTY", "s", "hs", method_open_machine_pty, 0),
670 SD_BUS_METHOD("OpenMachineLogin", "s", "hs", method_open_machine_login, SD_BUS_VTABLE_UNPRIVILEGED),
671 SD_BUS_METHOD("RemoveImage", "s", NULL, method_remove_image, 0),
672 SD_BUS_METHOD("RenameImage", "ss", NULL, method_rename_image, 0),
673 SD_BUS_METHOD("CloneImage", "ssb", NULL, method_clone_image, 0),
674 SD_BUS_METHOD("MarkImageReadOnly", "sb", NULL, method_mark_image_read_only, 0),
675 SD_BUS_SIGNAL("MachineNew", "so", 0),
676 SD_BUS_SIGNAL("MachineRemoved", "so", 0),
680 int match_job_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
681 const char *path, *result, *unit;
682 Manager *m = userdata;
691 r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
693 bus_log_parse_error(r);
697 machine = hashmap_get(m->machine_units, unit);
701 if (streq_ptr(path, machine->scope_job)) {
702 free(machine->scope_job);
703 machine->scope_job = NULL;
705 if (machine->started) {
706 if (streq(result, "done"))
707 machine_send_create_reply(machine, NULL);
709 _cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;
711 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
713 machine_send_create_reply(machine, &e);
716 machine_save(machine);
719 machine_add_to_gc_queue(machine);
723 int match_properties_changed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
724 _cleanup_free_ char *unit = NULL;
725 Manager *m = userdata;
734 path = sd_bus_message_get_path(message);
738 r = unit_name_from_dbus_path(path, &unit);
739 if (r == -EINVAL) /* not for a unit */
744 machine = hashmap_get(m->machine_units, unit);
746 machine_add_to_gc_queue(machine);
751 int match_unit_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
752 const char *path, *unit;
753 Manager *m = userdata;
761 r = sd_bus_message_read(message, "so", &unit, &path);
763 bus_log_parse_error(r);
767 machine = hashmap_get(m->machine_units, unit);
769 machine_add_to_gc_queue(machine);
774 int match_reloading(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
775 Manager *m = userdata;
782 r = sd_bus_message_read(message, "b", &b);
784 bus_log_parse_error(r);
790 /* systemd finished reloading, let's recheck all our machines */
791 log_debug("System manager has been reloaded, rechecking machines...");
793 HASHMAP_FOREACH(machine, m->machines, i)
794 machine_add_to_gc_queue(machine);
799 int manager_start_scope(
804 const char *description,
805 sd_bus_message *more_properties,
809 _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
816 r = sd_bus_message_new_method_call(
819 "org.freedesktop.systemd1",
820 "/org/freedesktop/systemd1",
821 "org.freedesktop.systemd1.Manager",
822 "StartTransientUnit");
826 r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
830 r = sd_bus_message_open_container(m, 'a', "(sv)");
834 if (!isempty(slice)) {
835 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
840 if (!isempty(description)) {
841 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
846 r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
850 r = sd_bus_message_append(m, "(sv)", "Delegate", "b", 1);
854 if (more_properties) {
855 r = sd_bus_message_copy(m, more_properties, true);
860 r = sd_bus_message_close_container(m);
864 r = sd_bus_message_append(m, "a(sa(sv))", 0);
868 r = sd_bus_call(manager->bus, m, 0, error, &reply);
876 r = sd_bus_message_read(reply, "o", &j);
890 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
891 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
897 r = sd_bus_call_method(
899 "org.freedesktop.systemd1",
900 "/org/freedesktop/systemd1",
901 "org.freedesktop.systemd1.Manager",
907 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
908 sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
913 sd_bus_error_free(error);
924 r = sd_bus_message_read(reply, "o", &j);
938 int manager_kill_unit(Manager *manager, const char *unit, int signo, sd_bus_error *error) {
942 return sd_bus_call_method(
944 "org.freedesktop.systemd1",
945 "/org/freedesktop/systemd1",
946 "org.freedesktop.systemd1.Manager",
950 "ssi", unit, "all", signo);
953 int manager_unit_is_active(Manager *manager, const char *unit) {
954 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
955 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
956 _cleanup_free_ char *path = NULL;
963 path = unit_dbus_path_from_name(unit);
967 r = sd_bus_get_property(
969 "org.freedesktop.systemd1",
971 "org.freedesktop.systemd1.Unit",
977 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
978 sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
981 if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
982 sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
988 r = sd_bus_message_read(reply, "s", &state);
992 return !streq(state, "inactive") && !streq(state, "failed");
995 int manager_job_is_active(Manager *manager, const char *path) {
996 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
997 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1003 r = sd_bus_get_property(
1005 "org.freedesktop.systemd1",
1007 "org.freedesktop.systemd1.Job",
1013 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
1014 sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
1017 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
1023 /* We don't actually care about the state really. The fact
1024 * that we could read the job state is enough for us */
1029 int manager_get_machine_by_pid(Manager *m, pid_t pid, Machine **machine) {
1030 _cleanup_free_ char *unit = NULL;
1038 r = cg_pid_get_unit(pid, &unit);
1040 mm = hashmap_get(m->machine_leaders, UINT_TO_PTR(pid));
1042 mm = hashmap_get(m->machine_units, unit);
1051 int manager_add_machine(Manager *m, const char *name, Machine **_machine) {
1057 machine = hashmap_get(m->machines, name);
1059 machine = machine_new(m, name);
1065 *_machine = machine;