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 m->registered = true;
359 r = machine_start(m, NULL, error);
363 p = machine_bus_path(m);
369 return sd_bus_reply_method_return(message, "o", p);
372 machine_add_to_gc_queue(m);
376 static int method_register_machine_with_network(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
377 return method_register_machine_internal(bus, message, true, userdata, error);
380 static int method_register_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
381 return method_register_machine_internal(bus, message, false, userdata, error);
384 static int method_terminate_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
385 Manager *m = userdata;
394 r = sd_bus_message_read(message, "s", &name);
396 return sd_bus_error_set_errno(error, r);
398 machine = hashmap_get(m->machines, name);
400 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
402 return bus_machine_method_terminate(bus, message, machine, error);
405 static int method_kill_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
406 Manager *m = userdata;
415 r = sd_bus_message_read(message, "s", &name);
417 return sd_bus_error_set_errno(error, r);
419 machine = hashmap_get(m->machines, name);
421 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
423 return bus_machine_method_kill(bus, message, machine, error);
426 static int method_get_machine_addresses(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
427 Manager *m = userdata;
436 r = sd_bus_message_read(message, "s", &name);
438 return sd_bus_error_set_errno(error, r);
440 machine = hashmap_get(m->machines, name);
442 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
444 return bus_machine_method_get_addresses(bus, message, machine, error);
447 static int method_get_machine_os_release(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
448 Manager *m = userdata;
457 r = sd_bus_message_read(message, "s", &name);
459 return sd_bus_error_set_errno(error, r);
461 machine = hashmap_get(m->machines, name);
463 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
465 return bus_machine_method_get_os_release(bus, message, machine, error);
468 static int method_list_images(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
469 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
470 _cleanup_(image_hashmap_freep) Hashmap *images = NULL;
471 Manager *m = userdata;
480 images = hashmap_new(&string_hash_ops);
484 r = image_discover(images);
488 r = sd_bus_message_new_method_return(message, &reply);
492 r = sd_bus_message_open_container(reply, 'a', "(ssbttto)");
496 HASHMAP_FOREACH(image, images, i) {
497 _cleanup_free_ char *p = NULL;
499 p = image_bus_path(image->name);
503 r = sd_bus_message_append(reply, "(ssbttto)",
505 image_type_to_string(image->type),
515 r = sd_bus_message_close_container(reply);
519 return sd_bus_send(bus, reply, NULL);
522 static int method_open_machine_pty(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
523 Manager *m = userdata;
532 r = sd_bus_message_read(message, "s", &name);
534 return sd_bus_error_set_errno(error, r);
536 machine = hashmap_get(m->machines, name);
538 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
540 return bus_machine_method_open_pty(bus, message, machine, error);
543 static int method_open_machine_login(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
544 Manager *m = userdata;
553 r = sd_bus_message_read(message, "s", &name);
557 machine = hashmap_get(m->machines, name);
559 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
561 return bus_machine_method_open_login(bus, message, machine, error);
564 static int method_remove_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
565 _cleanup_(image_unrefp) Image* i = NULL;
572 r = sd_bus_message_read(message, "s", &name);
576 if (!image_name_is_valid(name))
577 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
579 r = image_find(name, &i);
583 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
585 return bus_image_method_remove(bus, message, i, error);
588 static int method_rename_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
589 _cleanup_(image_unrefp) Image* i = NULL;
590 const char *old_name;
596 r = sd_bus_message_read(message, "s", &old_name);
600 if (!image_name_is_valid(old_name))
601 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", old_name);
603 r = image_find(old_name, &i);
607 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", old_name);
609 return bus_image_method_rename(bus, message, i, error);
612 static int method_clone_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
613 _cleanup_(image_unrefp) Image *i = NULL;
614 const char *old_name;
618 r = sd_bus_message_read(message, "s", &old_name);
622 if (!image_name_is_valid(old_name))
623 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", old_name);
625 r = image_find(old_name, &i);
629 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", old_name);
631 return bus_image_method_clone(bus, message, i, error);
634 static int method_mark_image_read_only(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
635 _cleanup_(image_unrefp) Image *i = NULL;
640 r = sd_bus_message_read(message, "s", &name);
644 if (!image_name_is_valid(name))
645 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
647 r = image_find(name, &i);
651 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
653 return bus_image_method_mark_read_only(bus, message, i, error);
656 const sd_bus_vtable manager_vtable[] = {
657 SD_BUS_VTABLE_START(0),
658 SD_BUS_METHOD("GetMachine", "s", "o", method_get_machine, SD_BUS_VTABLE_UNPRIVILEGED),
659 SD_BUS_METHOD("GetImage", "s", "o", method_get_image, SD_BUS_VTABLE_UNPRIVILEGED),
660 SD_BUS_METHOD("GetMachineByPID", "u", "o", method_get_machine_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
661 SD_BUS_METHOD("ListMachines", NULL, "a(ssso)", method_list_machines, SD_BUS_VTABLE_UNPRIVILEGED),
662 SD_BUS_METHOD("ListImages", NULL, "a(ssbttto)", method_list_images, SD_BUS_VTABLE_UNPRIVILEGED),
663 SD_BUS_METHOD("CreateMachine", "sayssusa(sv)", "o", method_create_machine, 0),
664 SD_BUS_METHOD("CreateMachineWithNetwork", "sayssusaia(sv)", "o", method_create_machine_with_network, 0),
665 SD_BUS_METHOD("RegisterMachine", "sayssus", "o", method_register_machine, 0),
666 SD_BUS_METHOD("RegisterMachineWithNetwork", "sayssusai", "o", method_register_machine_with_network, 0),
667 SD_BUS_METHOD("KillMachine", "ssi", NULL, method_kill_machine, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
668 SD_BUS_METHOD("TerminateMachine", "s", NULL, method_terminate_machine, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
669 SD_BUS_METHOD("GetMachineAddresses", "s", "a(iay)", method_get_machine_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
670 SD_BUS_METHOD("GetMachineOSRelease", "s", "a{ss}", method_get_machine_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
671 SD_BUS_METHOD("OpenMachinePTY", "s", "hs", method_open_machine_pty, 0),
672 SD_BUS_METHOD("OpenMachineLogin", "s", "hs", method_open_machine_login, SD_BUS_VTABLE_UNPRIVILEGED),
673 SD_BUS_METHOD("RemoveImage", "s", NULL, method_remove_image, 0),
674 SD_BUS_METHOD("RenameImage", "ss", NULL, method_rename_image, 0),
675 SD_BUS_METHOD("CloneImage", "ssb", NULL, method_clone_image, 0),
676 SD_BUS_METHOD("MarkImageReadOnly", "sb", NULL, method_mark_image_read_only, 0),
677 SD_BUS_SIGNAL("MachineNew", "so", 0),
678 SD_BUS_SIGNAL("MachineRemoved", "so", 0),
682 int match_job_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
683 const char *path, *result, *unit;
684 Manager *m = userdata;
693 r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
695 bus_log_parse_error(r);
699 machine = hashmap_get(m->machine_units, unit);
703 if (streq_ptr(path, machine->scope_job)) {
704 free(machine->scope_job);
705 machine->scope_job = NULL;
707 if (machine->started) {
708 if (streq(result, "done"))
709 machine_send_create_reply(machine, NULL);
711 _cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;
713 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
715 machine_send_create_reply(machine, &e);
718 machine_save(machine);
721 machine_add_to_gc_queue(machine);
725 int match_properties_changed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
726 _cleanup_free_ char *unit = NULL;
727 Manager *m = userdata;
736 path = sd_bus_message_get_path(message);
740 r = unit_name_from_dbus_path(path, &unit);
741 if (r == -EINVAL) /* not for a unit */
746 machine = hashmap_get(m->machine_units, unit);
748 machine_add_to_gc_queue(machine);
753 int match_unit_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
754 const char *path, *unit;
755 Manager *m = userdata;
763 r = sd_bus_message_read(message, "so", &unit, &path);
765 bus_log_parse_error(r);
769 machine = hashmap_get(m->machine_units, unit);
771 machine_add_to_gc_queue(machine);
776 int match_reloading(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
777 Manager *m = userdata;
784 r = sd_bus_message_read(message, "b", &b);
786 bus_log_parse_error(r);
792 /* systemd finished reloading, let's recheck all our machines */
793 log_debug("System manager has been reloaded, rechecking machines...");
795 HASHMAP_FOREACH(machine, m->machines, i)
796 machine_add_to_gc_queue(machine);
801 int manager_start_scope(
806 const char *description,
807 sd_bus_message *more_properties,
811 _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
818 r = sd_bus_message_new_method_call(
821 "org.freedesktop.systemd1",
822 "/org/freedesktop/systemd1",
823 "org.freedesktop.systemd1.Manager",
824 "StartTransientUnit");
828 r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
832 r = sd_bus_message_open_container(m, 'a', "(sv)");
836 if (!isempty(slice)) {
837 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
842 if (!isempty(description)) {
843 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
848 r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
852 r = sd_bus_message_append(m, "(sv)", "Delegate", "b", 1);
856 if (more_properties) {
857 r = sd_bus_message_copy(m, more_properties, true);
862 r = sd_bus_message_close_container(m);
866 r = sd_bus_message_append(m, "a(sa(sv))", 0);
870 r = sd_bus_call(manager->bus, m, 0, error, &reply);
878 r = sd_bus_message_read(reply, "o", &j);
892 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
893 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
899 r = sd_bus_call_method(
901 "org.freedesktop.systemd1",
902 "/org/freedesktop/systemd1",
903 "org.freedesktop.systemd1.Manager",
909 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
910 sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
915 sd_bus_error_free(error);
926 r = sd_bus_message_read(reply, "o", &j);
940 int manager_kill_unit(Manager *manager, const char *unit, int signo, sd_bus_error *error) {
944 return sd_bus_call_method(
946 "org.freedesktop.systemd1",
947 "/org/freedesktop/systemd1",
948 "org.freedesktop.systemd1.Manager",
952 "ssi", unit, "all", signo);
955 int manager_unit_is_active(Manager *manager, const char *unit) {
956 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
957 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
958 _cleanup_free_ char *path = NULL;
965 path = unit_dbus_path_from_name(unit);
969 r = sd_bus_get_property(
971 "org.freedesktop.systemd1",
973 "org.freedesktop.systemd1.Unit",
979 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
980 sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
983 if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
984 sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
990 r = sd_bus_message_read(reply, "s", &state);
994 return !streq(state, "inactive") && !streq(state, "failed");
997 int manager_job_is_active(Manager *manager, const char *path) {
998 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
999 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1005 r = sd_bus_get_property(
1007 "org.freedesktop.systemd1",
1009 "org.freedesktop.systemd1.Job",
1015 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
1016 sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
1019 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
1025 /* We don't actually care about the state really. The fact
1026 * that we could read the job state is enough for us */
1031 int manager_get_machine_by_pid(Manager *m, pid_t pid, Machine **machine) {
1032 _cleanup_free_ char *unit = NULL;
1040 r = cg_pid_get_unit(pid, &unit);
1042 mm = hashmap_get(m->machine_leaders, UINT_TO_PTR(pid));
1044 mm = hashmap_get(m->machine_units, unit);
1053 int manager_add_machine(Manager *m, const char *name, Machine **_machine) {
1059 machine = hashmap_get(m->machines, name);
1061 machine = machine_new(m, name);
1067 *_machine = machine;