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', "(ssbtto)");
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, "(ssbtto)",
505 image_type_to_string(image->type),
514 r = sd_bus_message_close_container(reply);
518 return sd_bus_send(bus, reply, NULL);
521 static int method_open_machine_pty(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
522 Manager *m = userdata;
531 r = sd_bus_message_read(message, "s", &name);
533 return sd_bus_error_set_errno(error, r);
535 machine = hashmap_get(m->machines, name);
537 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
539 return bus_machine_method_open_pty(bus, message, machine, error);
542 static int method_open_machine_login(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
543 Manager *m = userdata;
552 r = sd_bus_message_read(message, "s", &name);
556 machine = hashmap_get(m->machines, name);
558 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
560 return bus_machine_method_open_login(bus, message, machine, error);
563 static int method_remove_image(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
564 _cleanup_(image_unrefp) Image* i = NULL;
571 r = sd_bus_message_read(message, "s", &name);
575 if (!image_name_is_valid(name))
576 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
578 r = image_find(name, &i);
582 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
588 return sd_bus_reply_method_return(message, NULL);
591 const sd_bus_vtable manager_vtable[] = {
592 SD_BUS_VTABLE_START(0),
593 SD_BUS_METHOD("GetMachine", "s", "o", method_get_machine, SD_BUS_VTABLE_UNPRIVILEGED),
594 SD_BUS_METHOD("GetImage", "s", "o", method_get_image, SD_BUS_VTABLE_UNPRIVILEGED),
595 SD_BUS_METHOD("GetMachineByPID", "u", "o", method_get_machine_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
596 SD_BUS_METHOD("ListMachines", NULL, "a(ssso)", method_list_machines, SD_BUS_VTABLE_UNPRIVILEGED),
597 SD_BUS_METHOD("ListImages", NULL, "a(ssbtto)", method_list_images, SD_BUS_VTABLE_UNPRIVILEGED),
598 SD_BUS_METHOD("CreateMachine", "sayssusa(sv)", "o", method_create_machine, 0),
599 SD_BUS_METHOD("CreateMachineWithNetwork", "sayssusaia(sv)", "o", method_create_machine_with_network, 0),
600 SD_BUS_METHOD("RegisterMachine", "sayssus", "o", method_register_machine, 0),
601 SD_BUS_METHOD("RegisterMachineWithNetwork", "sayssusai", "o", method_register_machine_with_network, 0),
602 SD_BUS_METHOD("KillMachine", "ssi", NULL, method_kill_machine, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
603 SD_BUS_METHOD("TerminateMachine", "s", NULL, method_terminate_machine, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
604 SD_BUS_METHOD("GetMachineAddresses", "s", "a(iay)", method_get_machine_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
605 SD_BUS_METHOD("GetMachineOSRelease", "s", "a{ss}", method_get_machine_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
606 SD_BUS_METHOD("OpenMachinePTY", "s", "hs", method_open_machine_pty, 0),
607 SD_BUS_METHOD("OpenMachineLogin", "s", "hs", method_open_machine_login, SD_BUS_VTABLE_UNPRIVILEGED),
608 SD_BUS_METHOD("RemoveImage", "s", NULL, method_remove_image, 0),
609 SD_BUS_SIGNAL("MachineNew", "so", 0),
610 SD_BUS_SIGNAL("MachineRemoved", "so", 0),
614 int match_job_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
615 const char *path, *result, *unit;
616 Manager *m = userdata;
625 r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
627 bus_log_parse_error(r);
631 machine = hashmap_get(m->machine_units, unit);
635 if (streq_ptr(path, machine->scope_job)) {
636 free(machine->scope_job);
637 machine->scope_job = NULL;
639 if (machine->started) {
640 if (streq(result, "done"))
641 machine_send_create_reply(machine, NULL);
643 _cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;
645 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
647 machine_send_create_reply(machine, &e);
650 machine_save(machine);
653 machine_add_to_gc_queue(machine);
657 int match_properties_changed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
658 _cleanup_free_ char *unit = NULL;
659 Manager *m = userdata;
668 path = sd_bus_message_get_path(message);
672 r = unit_name_from_dbus_path(path, &unit);
676 machine = hashmap_get(m->machine_units, unit);
678 machine_add_to_gc_queue(machine);
683 int match_unit_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
684 const char *path, *unit;
685 Manager *m = userdata;
693 r = sd_bus_message_read(message, "so", &unit, &path);
695 bus_log_parse_error(r);
699 machine = hashmap_get(m->machine_units, unit);
701 machine_add_to_gc_queue(machine);
706 int match_reloading(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
707 Manager *m = userdata;
714 r = sd_bus_message_read(message, "b", &b);
716 bus_log_parse_error(r);
722 /* systemd finished reloading, let's recheck all our machines */
723 log_debug("System manager has been reloaded, rechecking machines...");
725 HASHMAP_FOREACH(machine, m->machines, i)
726 machine_add_to_gc_queue(machine);
731 int manager_start_scope(
736 const char *description,
737 sd_bus_message *more_properties,
741 _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
748 r = sd_bus_message_new_method_call(
751 "org.freedesktop.systemd1",
752 "/org/freedesktop/systemd1",
753 "org.freedesktop.systemd1.Manager",
754 "StartTransientUnit");
758 r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
762 r = sd_bus_message_open_container(m, 'a', "(sv)");
766 if (!isempty(slice)) {
767 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
772 if (!isempty(description)) {
773 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
778 r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
782 r = sd_bus_message_append(m, "(sv)", "Delegate", "b", 1);
786 if (more_properties) {
787 r = sd_bus_message_copy(m, more_properties, true);
792 r = sd_bus_message_close_container(m);
796 r = sd_bus_message_append(m, "a(sa(sv))", 0);
800 r = sd_bus_call(manager->bus, m, 0, error, &reply);
808 r = sd_bus_message_read(reply, "o", &j);
822 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
823 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
829 r = sd_bus_call_method(
831 "org.freedesktop.systemd1",
832 "/org/freedesktop/systemd1",
833 "org.freedesktop.systemd1.Manager",
839 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
840 sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
845 sd_bus_error_free(error);
856 r = sd_bus_message_read(reply, "o", &j);
870 int manager_kill_unit(Manager *manager, const char *unit, int signo, sd_bus_error *error) {
874 return sd_bus_call_method(
876 "org.freedesktop.systemd1",
877 "/org/freedesktop/systemd1",
878 "org.freedesktop.systemd1.Manager",
882 "ssi", unit, "all", signo);
885 int manager_unit_is_active(Manager *manager, const char *unit) {
886 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
887 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
888 _cleanup_free_ char *path = NULL;
895 path = unit_dbus_path_from_name(unit);
899 r = sd_bus_get_property(
901 "org.freedesktop.systemd1",
903 "org.freedesktop.systemd1.Unit",
909 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
910 sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
913 if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
914 sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
920 r = sd_bus_message_read(reply, "s", &state);
924 return !streq(state, "inactive") && !streq(state, "failed");
927 int manager_job_is_active(Manager *manager, const char *path) {
928 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
929 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
935 r = sd_bus_get_property(
937 "org.freedesktop.systemd1",
939 "org.freedesktop.systemd1.Job",
945 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
946 sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
949 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
955 /* We don't actually care about the state really. The fact
956 * that we could read the job state is enough for us */
961 int manager_get_machine_by_pid(Manager *m, pid_t pid, Machine **machine) {
962 _cleanup_free_ char *unit = NULL;
970 r = cg_pid_get_unit(pid, &unit);
972 mm = hashmap_get(m->machine_leaders, UINT_TO_PTR(pid));
974 mm = hashmap_get(m->machine_units, unit);
983 int manager_add_machine(Manager *m, const char *name, Machine **_machine) {
989 machine = hashmap_get(m->machines, name);
991 machine = machine_new(m, name);