| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| /*** |
| This file is part of systemd. |
| |
| Copyright 2010 Lennart Poettering |
| |
| systemd is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or |
| (at your option) any later version. |
| |
| systemd is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include "sd-bus.h" |
| |
| #include "alloc-util.h" |
| #include "bpf-firewall.h" |
| #include "bus-common-errors.h" |
| #include "cgroup-util.h" |
| #include "condition.h" |
| #include "dbus-job.h" |
| #include "dbus-unit.h" |
| #include "dbus-util.h" |
| #include "dbus.h" |
| #include "fd-util.h" |
| #include "locale-util.h" |
| #include "log.h" |
| #include "path-util.h" |
| #include "process-util.h" |
| #include "selinux-access.h" |
| #include "signal-util.h" |
| #include "special.h" |
| #include "string-util.h" |
| #include "strv.h" |
| #include "user-util.h" |
| #include "web-util.h" |
| |
| static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_collect_mode, collect_mode, CollectMode); |
| static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state, unit_load_state, UnitLoadState); |
| static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode, job_mode, JobMode); |
| static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_emergency_action, emergency_action, EmergencyAction); |
| |
| static int property_get_names( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| Iterator i; |
| const char *t; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| r = sd_bus_message_open_container(reply, 'a', "s"); |
| if (r < 0) |
| return r; |
| |
| SET_FOREACH(t, u->names, i) { |
| r = sd_bus_message_append(reply, "s", t); |
| if (r < 0) |
| return r; |
| } |
| |
| return sd_bus_message_close_container(reply); |
| } |
| |
| static int property_get_following( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata, *f; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| f = unit_following(u); |
| return sd_bus_message_append(reply, "s", f ? f->id : ""); |
| } |
| |
| static int property_get_dependencies( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Hashmap *h = *(Hashmap**) userdata; |
| Iterator j; |
| Unit *u; |
| void *v; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| |
| r = sd_bus_message_open_container(reply, 'a', "s"); |
| if (r < 0) |
| return r; |
| |
| HASHMAP_FOREACH_KEY(v, u, h, j) { |
| r = sd_bus_message_append(reply, "s", u->id); |
| if (r < 0) |
| return r; |
| } |
| |
| return sd_bus_message_close_container(reply); |
| } |
| |
| static int property_get_obsolete_dependencies( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| assert(bus); |
| assert(reply); |
| |
| /* For dependency types we don't support anymore always return an empty array */ |
| return sd_bus_message_append(reply, "as", 0); |
| } |
| |
| static int property_get_requires_mounts_for( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Hashmap *h = *(Hashmap**) userdata; |
| const char *p; |
| Iterator j; |
| void *v; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| |
| r = sd_bus_message_open_container(reply, 'a', "s"); |
| if (r < 0) |
| return r; |
| |
| HASHMAP_FOREACH_KEY(v, p, h, j) { |
| r = sd_bus_message_append(reply, "s", p); |
| if (r < 0) |
| return r; |
| } |
| |
| return sd_bus_message_close_container(reply); |
| } |
| |
| static int property_get_description( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "s", unit_description(u)); |
| } |
| |
| static int property_get_active_state( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "s", unit_active_state_to_string(unit_active_state(u))); |
| } |
| |
| static int property_get_sub_state( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "s", unit_sub_state_to_string(u)); |
| } |
| |
| static int property_get_unit_file_preset( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| r = unit_get_unit_file_preset(u); |
| |
| return sd_bus_message_append(reply, "s", |
| r < 0 ? "": |
| r > 0 ? "enabled" : "disabled"); |
| } |
| |
| static int property_get_unit_file_state( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "s", unit_file_state_to_string(unit_get_unit_file_state(u))); |
| } |
| |
| static int property_get_can_start( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_start); |
| } |
| |
| static int property_get_can_stop( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "b", unit_can_stop(u) && !u->refuse_manual_stop); |
| } |
| |
| static int property_get_can_reload( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "b", unit_can_reload(u)); |
| } |
| |
| static int property_get_can_isolate( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "b", unit_can_isolate(u) && !u->refuse_manual_start); |
| } |
| |
| static int property_get_job( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| _cleanup_free_ char *p = NULL; |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| if (!u->job) |
| return sd_bus_message_append(reply, "(uo)", 0, "/"); |
| |
| p = job_dbus_path(u->job); |
| if (!p) |
| return -ENOMEM; |
| |
| return sd_bus_message_append(reply, "(uo)", u->job->id, p); |
| } |
| |
| static int property_get_need_daemon_reload( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "b", unit_need_daemon_reload(u)); |
| } |
| |
| static int property_get_conditions( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| const char *(*to_string)(ConditionType type) = NULL; |
| Condition **list = userdata, *c; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| assert(list); |
| |
| to_string = streq(property, "Asserts") ? assert_type_to_string : condition_type_to_string; |
| |
| r = sd_bus_message_open_container(reply, 'a', "(sbbsi)"); |
| if (r < 0) |
| return r; |
| |
| LIST_FOREACH(conditions, c, *list) { |
| int tristate; |
| |
| tristate = |
| c->result == CONDITION_UNTESTED ? 0 : |
| c->result == CONDITION_SUCCEEDED ? 1 : -1; |
| |
| r = sd_bus_message_append(reply, "(sbbsi)", |
| to_string(c->type), |
| c->trigger, c->negate, |
| c->parameter, tristate); |
| if (r < 0) |
| return r; |
| |
| } |
| |
| return sd_bus_message_close_container(reply); |
| } |
| |
| static int property_get_load_error( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL; |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| if (u->load_error != 0) |
| sd_bus_error_set_errno(&e, u->load_error); |
| |
| return sd_bus_message_append(reply, "(ss)", e.name, e.message); |
| } |
| |
| static int bus_verify_manage_units_async_full( |
| Unit *u, |
| const char *verb, |
| int capability, |
| const char *polkit_message, |
| bool interactive, |
| sd_bus_message *call, |
| sd_bus_error *error) { |
| |
| const char *details[9] = { |
| "unit", u->id, |
| "verb", verb, |
| }; |
| |
| if (polkit_message) { |
| details[4] = "polkit.message"; |
| details[5] = polkit_message; |
| details[6] = "polkit.gettext_domain"; |
| details[7] = GETTEXT_PACKAGE; |
| } |
| |
| return bus_verify_polkit_async( |
| call, |
| capability, |
| "org.freedesktop.systemd1.manage-units", |
| details, |
| interactive, |
| UID_INVALID, |
| &u->manager->polkit_registry, |
| error); |
| } |
| |
| int bus_unit_method_start_generic( |
| sd_bus_message *message, |
| Unit *u, |
| JobType job_type, |
| bool reload_if_possible, |
| sd_bus_error *error) { |
| |
| const char *smode; |
| JobMode mode; |
| _cleanup_free_ char *verb = NULL; |
| static const char *const polkit_message_for_job[_JOB_TYPE_MAX] = { |
| [JOB_START] = N_("Authentication is required to start '$(unit)'."), |
| [JOB_STOP] = N_("Authentication is required to stop '$(unit)'."), |
| [JOB_RELOAD] = N_("Authentication is required to reload '$(unit)'."), |
| [JOB_RESTART] = N_("Authentication is required to restart '$(unit)'."), |
| [JOB_TRY_RESTART] = N_("Authentication is required to restart '$(unit)'."), |
| }; |
| int r; |
| |
| assert(message); |
| assert(u); |
| assert(job_type >= 0 && job_type < _JOB_TYPE_MAX); |
| |
| r = mac_selinux_unit_access_check( |
| u, message, |
| job_type_to_access_method(job_type), |
| error); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_read(message, "s", &smode); |
| if (r < 0) |
| return r; |
| |
| mode = job_mode_from_string(smode); |
| if (mode < 0) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode); |
| |
| if (reload_if_possible) |
| verb = strjoin("reload-or-", job_type_to_string(job_type)); |
| else |
| verb = strdup(job_type_to_string(job_type)); |
| if (!verb) |
| return -ENOMEM; |
| |
| r = bus_verify_manage_units_async_full( |
| u, |
| verb, |
| CAP_SYS_ADMIN, |
| job_type < _JOB_TYPE_MAX ? polkit_message_for_job[job_type] : NULL, |
| true, |
| message, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
| |
| return bus_unit_queue_job(message, u, job_type, mode, reload_if_possible, error); |
| } |
| |
| static int method_start(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(message, userdata, JOB_START, false, error); |
| } |
| |
| static int method_stop(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(message, userdata, JOB_STOP, false, error); |
| } |
| |
| static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(message, userdata, JOB_RELOAD, false, error); |
| } |
| |
| static int method_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(message, userdata, JOB_RESTART, false, error); |
| } |
| |
| static int method_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, false, error); |
| } |
| |
| static int method_reload_or_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(message, userdata, JOB_RESTART, true, error); |
| } |
| |
| static int method_reload_or_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, true, error); |
| } |
| |
| int bus_unit_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Unit *u = userdata; |
| const char *swho; |
| int32_t signo; |
| KillWho who; |
| int r; |
| |
| assert(message); |
| assert(u); |
| |
| r = mac_selinux_unit_access_check(u, message, "stop", error); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_read(message, "si", &swho, &signo); |
| if (r < 0) |
| return r; |
| |
| if (isempty(swho)) |
| who = KILL_ALL; |
| else { |
| who = kill_who_from_string(swho); |
| if (who < 0) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho); |
| } |
| |
| if (!SIGNAL_VALID(signo)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range."); |
| |
| r = bus_verify_manage_units_async_full( |
| u, |
| "kill", |
| CAP_KILL, |
| N_("Authentication is required to kill '$(unit)'."), |
| true, |
| message, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
| |
| r = unit_kill(u, who, signo, error); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_reply_method_return(message, NULL); |
| } |
| |
| int bus_unit_method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Unit *u = userdata; |
| int r; |
| |
| assert(message); |
| assert(u); |
| |
| r = mac_selinux_unit_access_check(u, message, "reload", error); |
| if (r < 0) |
| return r; |
| |
| r = bus_verify_manage_units_async_full( |
| u, |
| "reset-failed", |
| CAP_SYS_ADMIN, |
| N_("Authentication is required to reset the \"failed\" state of '$(unit)'."), |
| true, |
| message, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
| |
| unit_reset_failed(u); |
| |
| return sd_bus_reply_method_return(message, NULL); |
| } |
| |
| int bus_unit_method_set_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Unit *u = userdata; |
| int runtime, r; |
| |
| assert(message); |
| assert(u); |
| |
| r = mac_selinux_unit_access_check(u, message, "start", error); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_read(message, "b", &runtime); |
| if (r < 0) |
| return r; |
| |
| r = bus_verify_manage_units_async_full( |
| u, |
| "set-property", |
| CAP_SYS_ADMIN, |
| N_("Authentication is required to set properties on '$(unit)'."), |
| true, |
| message, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
| |
| r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_reply_method_return(message, NULL); |
| } |
| |
| int bus_unit_method_ref(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Unit *u = userdata; |
| int r; |
| |
| assert(message); |
| assert(u); |
| |
| r = mac_selinux_unit_access_check(u, message, "start", error); |
| if (r < 0) |
| return r; |
| |
| r = bus_verify_manage_units_async_full( |
| u, |
| "ref", |
| CAP_SYS_ADMIN, |
| NULL, |
| false, |
| message, |
| error); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
| |
| r = bus_unit_track_add_sender(u, message); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_reply_method_return(message, NULL); |
| } |
| |
| int bus_unit_method_unref(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Unit *u = userdata; |
| int r; |
| |
| assert(message); |
| assert(u); |
| |
| r = bus_unit_track_remove_sender(u, message); |
| if (r == -EUNATCH) |
| return sd_bus_error_setf(error, BUS_ERROR_NOT_REFERENCED, "Unit has not been referenced yet."); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_reply_method_return(message, NULL); |
| } |
| |
| const sd_bus_vtable bus_unit_vtable[] = { |
| SD_BUS_VTABLE_START(0), |
| |
| SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Names", "as", property_get_names, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0), |
| SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OF]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("RequiresMountsFor", "as", property_get_requires_mounts_for, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0), |
| SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset, 0, 0), |
| BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit, state_change_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Job", "(uo)", property_get_job, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_running_timeout), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool, offsetof(Unit, assert_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit, assert_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, offsetof(Unit, conditions), 0), |
| SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), 0), |
| SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool, offsetof(Unit, perpetual), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("SuccessAction", "s", property_get_emergency_action, offsetof(Unit, success_action), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128, offsetof(Unit, invocation_id), 0), |
| SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode, offsetof(Unit, collect_mode), 0), |
| |
| SD_BUS_METHOD("Start", "s", "o", method_start, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("Stop", "s", "o", method_stop, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("Reload", "s", "o", method_reload, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("Restart", "s", "o", method_restart, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("Ref", NULL, NULL, bus_unit_method_ref, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("Unref", NULL, NULL, bus_unit_method_unref, SD_BUS_VTABLE_UNPRIVILEGED), |
| |
| /* Obsolete properties or obsolete alias names */ |
| SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_obsolete_dependencies, 0, SD_BUS_VTABLE_HIDDEN), |
| SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_obsolete_dependencies, 0, SD_BUS_VTABLE_HIDDEN), |
| SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_obsolete_dependencies, 0, SD_BUS_VTABLE_HIDDEN), |
| SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_obsolete_dependencies, 0, SD_BUS_VTABLE_HIDDEN), |
| SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN), |
| SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN), |
| SD_BUS_VTABLE_END |
| }; |
| |
| static int property_get_slice( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| return sd_bus_message_append(reply, "s", unit_slice_name(u)); |
| } |
| |
| static int property_get_current_memory( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| uint64_t sz = (uint64_t) -1; |
| Unit *u = userdata; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| r = unit_get_memory_current(u, &sz); |
| if (r < 0 && r != -ENODATA) |
| log_unit_warning_errno(u, r, "Failed to get memory.usage_in_bytes attribute: %m"); |
| |
| return sd_bus_message_append(reply, "t", sz); |
| } |
| |
| static int property_get_current_tasks( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| uint64_t cn = (uint64_t) -1; |
| Unit *u = userdata; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| r = unit_get_tasks_current(u, &cn); |
| if (r < 0 && r != -ENODATA) |
| log_unit_warning_errno(u, r, "Failed to get pids.current attribute: %m"); |
| |
| return sd_bus_message_append(reply, "t", cn); |
| } |
| |
| static int property_get_cpu_usage( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| nsec_t ns = (nsec_t) -1; |
| Unit *u = userdata; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| r = unit_get_cpu_usage(u, &ns); |
| if (r < 0 && r != -ENODATA) |
| log_unit_warning_errno(u, r, "Failed to get cpuacct.usage attribute: %m"); |
| |
| return sd_bus_message_append(reply, "t", ns); |
| } |
| |
| static int property_get_cgroup( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Unit *u = userdata; |
| const char *t; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| /* Three cases: a) u->cgroup_path is NULL, in which case the |
| * unit has no control group, which we report as the empty |
| * string. b) u->cgroup_path is the empty string, which |
| * indicates the root cgroup, which we report as "/". c) all |
| * other cases we report as-is. */ |
| |
| if (u->cgroup_path) |
| t = isempty(u->cgroup_path) ? "/" : u->cgroup_path; |
| else |
| t = ""; |
| |
| return sd_bus_message_append(reply, "s", t); |
| } |
| |
| static int append_process(sd_bus_message *reply, const char *p, pid_t pid, Set *pids) { |
| _cleanup_free_ char *buf = NULL, *cmdline = NULL; |
| int r; |
| |
| assert(reply); |
| assert(pid > 0); |
| |
| r = set_put(pids, PID_TO_PTR(pid)); |
| if (IN_SET(r, 0, -EEXIST)) |
| return 0; |
| if (r < 0) |
| return r; |
| |
| if (!p) { |
| r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &buf); |
| if (r == -ESRCH) |
| return 0; |
| if (r < 0) |
| return r; |
| |
| p = buf; |
| } |
| |
| (void) get_process_cmdline(pid, 0, true, &cmdline); |
| |
| return sd_bus_message_append(reply, |
| "(sus)", |
| p, |
| (uint32_t) pid, |
| cmdline); |
| } |
| |
| static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) { |
| _cleanup_closedir_ DIR *d = NULL; |
| _cleanup_fclose_ FILE *f = NULL; |
| int r; |
| |
| assert(reply); |
| assert(p); |
| |
| r = cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, p, &f); |
| if (r == ENOENT) |
| return 0; |
| if (r < 0) |
| return r; |
| |
| for (;;) { |
| pid_t pid; |
| |
| r = cg_read_pid(f, &pid); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| break; |
| |
| if (is_kernel_thread(pid) > 0) |
| continue; |
| |
| r = append_process(reply, p, pid, pids); |
| if (r < 0) |
| return r; |
| } |
| |
| r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, p, &d); |
| if (r == -ENOENT) |
| return 0; |
| if (r < 0) |
| return r; |
| |
| for (;;) { |
| _cleanup_free_ char *g = NULL, *j = NULL; |
| |
| r = cg_read_subgroup(d, &g); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| break; |
| |
| j = strjoin(p, "/", g); |
| if (!j) |
| return -ENOMEM; |
| |
| r = append_cgroup(reply, j, pids); |
| if (r < 0) |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| int bus_unit_method_get_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
| _cleanup_(set_freep) Set *pids = NULL; |
| Unit *u = userdata; |
| pid_t pid; |
| int r; |
| |
| assert(message); |
| |
| r = mac_selinux_unit_access_check(u, message, "status", error); |
| if (r < 0) |
| return r; |
| |
| pids = set_new(NULL); |
| if (!pids) |
| return -ENOMEM; |
| |
| r = sd_bus_message_new_method_return(message, &reply); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_open_container(reply, 'a', "(sus)"); |
| if (r < 0) |
| return r; |
| |
| if (u->cgroup_path) { |
| r = append_cgroup(reply, u->cgroup_path, pids); |
| if (r < 0) |
| return r; |
| } |
| |
| /* The main and control pids might live outside of the cgroup, hence fetch them separately */ |
| pid = unit_main_pid(u); |
| if (pid > 0) { |
| r = append_process(reply, NULL, pid, pids); |
| if (r < 0) |
| return r; |
| } |
| |
| pid = unit_control_pid(u); |
| if (pid > 0) { |
| r = append_process(reply, NULL, pid, pids); |
| if (r < 0) |
| return r; |
| } |
| |
| r = sd_bus_message_close_container(reply); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_send(NULL, reply, NULL); |
| } |
| |
| static int property_get_ip_counter( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| CGroupIPAccountingMetric metric; |
| uint64_t value = (uint64_t) -1; |
| Unit *u = userdata; |
| |
| assert(bus); |
| assert(reply); |
| assert(property); |
| assert(u); |
| |
| if (streq(property, "IPIngressBytes")) |
| metric = CGROUP_IP_INGRESS_BYTES; |
| else if (streq(property, "IPIngressPackets")) |
| metric = CGROUP_IP_INGRESS_PACKETS; |
| else if (streq(property, "IPEgressBytes")) |
| metric = CGROUP_IP_EGRESS_BYTES; |
| else { |
| assert(streq(property, "IPEgressPackets")); |
| metric = CGROUP_IP_EGRESS_PACKETS; |
| } |
| |
| (void) unit_get_ip_accounting(u, metric, &value); |
| return sd_bus_message_append(reply, "t", value); |
| } |
| |
| const sd_bus_vtable bus_unit_cgroup_vtable[] = { |
| SD_BUS_VTABLE_START(0), |
| SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0), |
| SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup, 0, 0), |
| SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory, 0, 0), |
| SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage, 0, 0), |
| SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks, 0, 0), |
| SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter, 0, 0), |
| SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter, 0, 0), |
| SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter, 0, 0), |
| SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter, 0, 0), |
| SD_BUS_METHOD("GetProcesses", NULL, "a(sus)", bus_unit_method_get_processes, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_VTABLE_END |
| }; |
| |
| static int send_new_signal(sd_bus *bus, void *userdata) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
| _cleanup_free_ char *p = NULL; |
| Unit *u = userdata; |
| int r; |
| |
| assert(bus); |
| assert(u); |
| |
| p = unit_dbus_path(u); |
| if (!p) |
| return -ENOMEM; |
| |
| r = sd_bus_message_new_signal( |
| bus, |
| &m, |
| "/org/freedesktop/systemd1", |
| "org.freedesktop.systemd1.Manager", |
| "UnitNew"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(m, "so", u->id, p); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_send(bus, m, NULL); |
| } |
| |
| static int send_changed_signal(sd_bus *bus, void *userdata) { |
| _cleanup_free_ char *p = NULL; |
| Unit *u = userdata; |
| int r; |
| |
| assert(bus); |
| assert(u); |
| |
| p = unit_dbus_path(u); |
| if (!p) |
| return -ENOMEM; |
| |
| /* Send a properties changed signal. First for the specific |
| * type, then for the generic unit. The clients may rely on |
| * this order to get atomic behavior if needed. */ |
| |
| r = sd_bus_emit_properties_changed_strv( |
| bus, p, |
| unit_dbus_interface_from_type(u->type), |
| NULL); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_emit_properties_changed_strv( |
| bus, p, |
| "org.freedesktop.systemd1.Unit", |
| NULL); |
| } |
| |
| void bus_unit_send_change_signal(Unit *u) { |
| int r; |
| assert(u); |
| |
| if (u->in_dbus_queue) { |
| LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u); |
| u->in_dbus_queue = false; |
| } |
| |
| if (!u->id) |
| return; |
| |
| r = bus_foreach_bus(u->manager, u->bus_track, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u); |
| if (r < 0) |
| log_unit_debug_errno(u, r, "Failed to send unit change signal for %s: %m", u->id); |
| |
| u->sent_dbus_new_signal = true; |
| } |
| |
| static int send_removed_signal(sd_bus *bus, void *userdata) { |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
| _cleanup_free_ char *p = NULL; |
| Unit *u = userdata; |
| int r; |
| |
| assert(bus); |
| assert(u); |
| |
| p = unit_dbus_path(u); |
| if (!p) |
| return -ENOMEM; |
| |
| r = sd_bus_message_new_signal( |
| bus, |
| &m, |
| "/org/freedesktop/systemd1", |
| "org.freedesktop.systemd1.Manager", |
| "UnitRemoved"); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_append(m, "so", u->id, p); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_send(bus, m, NULL); |
| } |
| |
| void bus_unit_send_removed_signal(Unit *u) { |
| int r; |
| assert(u); |
| |
| if (!u->sent_dbus_new_signal || u->in_dbus_queue) |
| bus_unit_send_change_signal(u); |
| |
| if (!u->id) |
| return; |
| |
| r = bus_foreach_bus(u->manager, u->bus_track, send_removed_signal, u); |
| if (r < 0) |
| log_unit_debug_errno(u, r, "Failed to send unit remove signal for %s: %m", u->id); |
| } |
| |
| int bus_unit_queue_job( |
| sd_bus_message *message, |
| Unit *u, |
| JobType type, |
| JobMode mode, |
| bool reload_if_possible, |
| sd_bus_error *error) { |
| |
| _cleanup_free_ char *path = NULL; |
| Job *j; |
| int r; |
| |
| assert(message); |
| assert(u); |
| assert(type >= 0 && type < _JOB_TYPE_MAX); |
| assert(mode >= 0 && mode < _JOB_MODE_MAX); |
| |
| r = mac_selinux_unit_access_check( |
| u, message, |
| job_type_to_access_method(type), |
| error); |
| if (r < 0) |
| return r; |
| |
| if (reload_if_possible && unit_can_reload(u)) { |
| if (type == JOB_RESTART) |
| type = JOB_RELOAD_OR_START; |
| else if (type == JOB_TRY_RESTART) |
| type = JOB_TRY_RELOAD; |
| } |
| |
| if (type == JOB_STOP && |
| (IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_ERROR)) && |
| unit_active_state(u) == UNIT_INACTIVE) |
| return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id); |
| |
| if ((type == JOB_START && u->refuse_manual_start) || |
| (type == JOB_STOP && u->refuse_manual_stop) || |
| (IN_SET(type, JOB_RESTART, JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)) || |
| (type == JOB_RELOAD_OR_START && job_type_collapse(type, u) == JOB_START && u->refuse_manual_start)) |
| return sd_bus_error_setf(error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only (it is configured to refuse manual start/stop).", u->id); |
| |
| r = manager_add_job(u->manager, type, u, mode, error, &j); |
| if (r < 0) |
| return r; |
| |
| r = bus_job_track_sender(j, message); |
| if (r < 0) |
| return r; |
| |
| path = job_dbus_path(j); |
| if (!path) |
| return -ENOMEM; |
| |
| return sd_bus_reply_method_return(message, "o", path); |
| } |
| |
| static int bus_unit_set_live_property( |
| Unit *u, |
| const char *name, |
| sd_bus_message *message, |
| UnitWriteFlags flags, |
| sd_bus_error *error) { |
| |
| int r; |
| |
| assert(u); |
| assert(name); |
| assert(message); |
| |
| /* Handles setting properties both "live" (i.e. at any time during runtime), and during creation (for transient |
| * units that are being created). */ |
| |
| if (streq(name, "Description")) { |
| const char *d; |
| |
| r = sd_bus_message_read(message, "s", &d); |
| if (r < 0) |
| return r; |
| |
| if (!UNIT_WRITE_FLAGS_NOOP(flags)) { |
| r = unit_set_description(u, d); |
| if (r < 0) |
| return r; |
| |
| unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "Description=%s", d); |
| } |
| |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static BUS_DEFINE_SET_TRANSIENT_PARSE(collect_mode, CollectMode, collect_mode_from_string); |
| static BUS_DEFINE_SET_TRANSIENT_PARSE(emergency_action, EmergencyAction, emergency_action_from_string); |
| static BUS_DEFINE_SET_TRANSIENT_PARSE(job_mode, JobMode, job_mode_from_string); |
| |
| static int bus_set_transient_conditions( |
| Unit *u, |
| const char *name, |
| Condition **list, |
| bool is_condition, |
| sd_bus_message *message, |
| UnitWriteFlags flags, |
| sd_bus_error *error) { |
| |
| const char *type_name, *param; |
| int trigger, negate, r; |
| bool empty = true; |
| |
| assert(list); |
| |
| r = sd_bus_message_enter_container(message, 'a', "(sbbs)"); |
| if (r < 0) |
| return r; |
| |
| while ((r = sd_bus_message_read(message, "(sbbs)", &type_name, &trigger, &negate, ¶m)) > 0) { |
| ConditionType t; |
| |
| t = is_condition ? condition_type_from_string(type_name) : assert_type_from_string(type_name); |
| if (t < 0) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid condition type: %s", type_name); |
| |
| if (t != CONDITION_NULL) { |
| if (isempty(param)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Condition parameter in %s is empty", type_name); |
| |
| if (condition_takes_path(t) && !path_is_absolute(param)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path in condition %s is not absolute: %s", type_name, param); |
| } else |
| param = NULL; |
| |
| if (!UNIT_WRITE_FLAGS_NOOP(flags)) { |
| Condition *c; |
| |
| c = condition_new(t, param, trigger, negate); |
| if (!c) |
| return -ENOMEM; |
| |
| LIST_PREPEND(conditions, *list, c); |
| |
| if (t != CONDITION_NULL) |
| unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, |
| "%s=%s%s%s", type_name, |
| trigger ? "|" : "", negate ? "!" : "", param); |
| else |
| unit_write_settingf(u, flags, name, |
| "%s=%s%s", type_name, |
| trigger ? "|" : "", yes_no(!negate)); |
| } |
| |
| empty = false; |
| } |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_exit_container(message); |
| if (r < 0) |
| return r; |
| |
| if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) { |
| *list = condition_free_list(*list); |
| unit_write_settingf(u, flags, name, "%sNull=", is_condition ? "Condition" : "Assert"); |
| } |
| |
| return 1; |
| } |
| |
| static int bus_unit_set_transient_property( |
| Unit *u, |
| const char *name, |
| sd_bus_message *message, |
| UnitWriteFlags flags, |
| sd_bus_error *error) { |
| |
| UnitDependency d = _UNIT_DEPENDENCY_INVALID; |
| int r; |
| |
| assert(u); |
| assert(name); |
| assert(message); |
| |
| /* Handles settings when transient units are created. This settings cannot be altered anymore after the unit |
| * has been created. */ |
| |
| if (streq(name, "SourcePath")) |
| return bus_set_transient_path(u, name, &u->source_path, message, flags, error); |
| |
| if (streq(name, "StopWhenUnneeded")) |
| return bus_set_transient_bool(u, name, &u->stop_when_unneeded, message, flags, error); |
| |
| if (streq(name, "RefuseManualStart")) |
| return bus_set_transient_bool(u, name, &u->refuse_manual_start, message, flags, error); |
| |
| if (streq(name, "RefuseManualStop")) |
| return bus_set_transient_bool(u, name, &u->refuse_manual_stop, message, flags, error); |
| |
| if (streq(name, "AllowIsolate")) |
| return bus_set_transient_bool(u, name, &u->allow_isolate, message, flags, error); |
| |
| if (streq(name, "DefaultDependencies")) |
| return bus_set_transient_bool(u, name, &u->default_dependencies, message, flags, error); |
| |
| if (streq(name, "OnFailureJobMode")) |
| return bus_set_transient_job_mode(u, name, &u->on_failure_job_mode, message, flags, error); |
| |
| if (streq(name, "IgnoreOnIsolate")) |
| return bus_set_transient_bool(u, name, &u->ignore_on_isolate, message, flags, error); |
| |
| if (streq(name, "JobTimeoutUSec")) { |
| r = bus_set_transient_usec_fix_0(u, name, &u->job_timeout, message, flags, error); |
| if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags) && !u->job_running_timeout_set) |
| u->job_running_timeout = u->job_timeout; |
| } |
| |
| if (streq(name, "JobRunningTimeoutUSec")) { |
| r = bus_set_transient_usec_fix_0(u, name, &u->job_running_timeout, message, flags, error); |
| if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags)) |
| u->job_running_timeout_set = true; |
| |
| return r; |
| } |
| |
| if (streq(name, "JobTimeoutAction")) |
| return bus_set_transient_emergency_action(u, name, &u->job_timeout_action, message, flags, error); |
| |
| if (streq(name, "JobTimeoutRebootArgument")) |
| return bus_set_transient_string(u, name, &u->job_timeout_reboot_arg, message, flags, error); |
| |
| if (streq(name, "StartLimitIntervalUSec")) |
| return bus_set_transient_usec(u, name, &u->start_limit.interval, message, flags, error); |
| |
| if (streq(name, "StartLimitBurst")) |
| return bus_set_transient_unsigned(u, name, &u->start_limit.burst, message, flags, error); |
| |
| if (streq(name, "StartLimitAction")) |
| return bus_set_transient_emergency_action(u, name, &u->start_limit_action, message, flags, error); |
| |
| if (streq(name, "FailureAction")) |
| return bus_set_transient_emergency_action(u, name, &u->failure_action, message, flags, error); |
| |
| if (streq(name, "SuccessAction")) |
| return bus_set_transient_emergency_action(u, name, &u->success_action, message, flags, error); |
| |
| if (streq(name, "RebootArgument")) |
| return bus_set_transient_string(u, name, &u->reboot_arg, message, flags, error); |
| |
| if (streq(name, "CollectMode")) |
| return bus_set_transient_collect_mode(u, name, &u->collect_mode, message, flags, error); |
| |
| if (streq(name, "Conditions")) |
| return bus_set_transient_conditions(u, name, &u->conditions, true, message, flags, error); |
| |
| if (streq(name, "Asserts")) |
| return bus_set_transient_conditions(u, name, &u->asserts, false, message, flags, error); |
| |
| if (streq(name, "Documentation")) { |
| _cleanup_strv_free_ char **l = NULL; |
| char **p; |
| |
| r = sd_bus_message_read_strv(message, &l); |
| if (r < 0) |
| return r; |
| |
| STRV_FOREACH(p, l) { |
| if (!documentation_url_is_valid(*p)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid URL in %s: %s", name, *p); |
| } |
| |
| if (!UNIT_WRITE_FLAGS_NOOP(flags)) { |
| if (strv_isempty(l)) { |
| u->documentation = strv_free(u->documentation); |
| unit_write_settingf(u, flags, name, "%s=", name); |
| } else { |
| strv_extend_strv(&u->documentation, l, false); |
| |
| STRV_FOREACH(p, l) |
| unit_write_settingf(u, flags, name, "%s=%s", name, *p); |
| } |
| } |
| |
| return 1; |
| |
| } else if (streq(name, "Slice")) { |
| Unit *slice; |
| const char *s; |
| |
| if (!UNIT_HAS_CGROUP_CONTEXT(u)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "The slice property is only available for units with control groups."); |
| if (u->type == UNIT_SLICE) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Slice may not be set for slice units."); |
| if (unit_has_name(u, SPECIAL_INIT_SCOPE)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot set slice for init.scope"); |
| |
| r = sd_bus_message_read(message, "s", &s); |
| if (r < 0) |
| return r; |
| |
| if (!unit_name_is_valid(s, UNIT_NAME_PLAIN)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name '%s'", s); |
| |
| /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be |
| * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare() |
| * instead of manager_load_unit() on purpose, here. */ |
| r = manager_load_unit_prepare(u->manager, s, NULL, error, &slice); |
| if (r < 0) |
| return r; |
| |
| if (slice->type != UNIT_SLICE) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit name '%s' is not a slice", s); |
| |
| if (!UNIT_WRITE_FLAGS_NOOP(flags)) { |
| r = unit_set_slice(u, slice); |
| if (r < 0) |
| return r; |
| |
| unit_write_settingf(u, flags|UNIT_PRIVATE, name, "Slice=%s", s); |
| } |
| |
| return 1; |
| |
| } else if (streq(name, "RequiresMountsFor")) { |
| _cleanup_strv_free_ char **l = NULL; |
| char **p; |
| |
| r = sd_bus_message_read_strv(message, &l); |
| if (r < 0) |
| return r; |
| |
| STRV_FOREACH(p, l) { |
| if (!path_is_absolute(*p)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not absolute: %s", name, *p); |
| |
| if (!UNIT_WRITE_FLAGS_NOOP(flags)) { |
| r = unit_require_mounts_for(u, *p, UNIT_DEPENDENCY_FILE); |
| if (r < 0) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to add required mount \"%s\": %m", *p); |
| |
| unit_write_settingf(u, flags, name, "%s=%s", name, *p); |
| } |
| } |
| |
| return 1; |
| } |
| |
| if (streq(name, "RequiresOverridable")) |
| d = UNIT_REQUIRES; /* redirect for obsolete unit dependency type */ |
| else if (streq(name, "RequisiteOverridable")) |
| d = UNIT_REQUISITE; /* same here */ |
| else |
| d = unit_dependency_from_string(name); |
| |
| if (d >= 0) { |
| const char *other; |
| |
| r = sd_bus_message_enter_container(message, 'a', "s"); |
| if (r < 0) |
| return r; |
| |
| while ((r = sd_bus_message_read(message, "s", &other)) > 0) { |
| if (!unit_name_is_valid(other, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other); |
| |
| if (!UNIT_WRITE_FLAGS_NOOP(flags)) { |
| _cleanup_free_ char *label = NULL; |
| |
| r = unit_add_dependency_by_name(u, d, other, NULL, true, UNIT_DEPENDENCY_FILE); |
| if (r < 0) |
| return r; |
| |
| label = strjoin(name, "-", other); |
| if (!label) |
| return -ENOMEM; |
| |
| unit_write_settingf(u, flags, label, "%s=%s", unit_dependency_to_string(d), other); |
| } |
| |
| } |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_exit_container(message); |
| if (r < 0) |
| return r; |
| |
| return 1; |
| |
| } else if (streq(name, "AddRef")) { |
| |
| int b; |
| |
| /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method |
| * on the Unit interface, and it's probably not a good idea to expose a property and a method on the |
| * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for |
| * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference |
| * dependency type, hence let's not confuse things with that. |
| * |
| * Note that we don't acually add the reference to the bus track. We do that only after the setup of |
| * the transient unit is complete, so that setting this property multiple times in the same transient |
| * unit creation call doesn't count as individual references. */ |
| |
| r = sd_bus_message_read(message, "b", &b); |
| if (r < 0) |
| return r; |
| |
| if (!UNIT_WRITE_FLAGS_NOOP(flags)) |
| u->bus_track_add = b; |
| |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| int bus_unit_set_properties( |
| Unit *u, |
| sd_bus_message *message, |
| UnitWriteFlags flags, |
| bool commit, |
| sd_bus_error *error) { |
| |
| bool for_real = false; |
| unsigned n = 0; |
| int r; |
| |
| assert(u); |
| assert(message); |
| |
| /* We iterate through the array twice. First run we just check |
| * if all passed data is valid, second run actually applies |
| * it. This is to implement transaction-like behaviour without |
| * actually providing full transactions. */ |
| |
| r = sd_bus_message_enter_container(message, 'a', "(sv)"); |
| if (r < 0) |
| return r; |
| |
| for (;;) { |
| const char *name; |
| UnitWriteFlags f; |
| |
| r = sd_bus_message_enter_container(message, 'r', "sv"); |
| if (r < 0) |
| return r; |
| if (r == 0) { |
| if (for_real || UNIT_WRITE_FLAGS_NOOP(flags)) |
| break; |
| |
| /* Reached EOF. Let's try again, and this time for realz... */ |
| r = sd_bus_message_rewind(message, false); |
| if (r < 0) |
| return r; |
| |
| for_real = true; |
| continue; |
| } |
| |
| r = sd_bus_message_read(message, "s", &name); |
| if (r < 0) |
| return r; |
| |
| if (!UNIT_VTABLE(u)->bus_set_property) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties."); |
| |
| r = sd_bus_message_enter_container(message, 'v', NULL); |
| if (r < 0) |
| return r; |
| |
| /* If not for real, then mask out the two target flags */ |
| f = for_real ? flags : (flags & ~(UNIT_RUNTIME|UNIT_PERSISTENT)); |
| |
| r = UNIT_VTABLE(u)->bus_set_property(u, name, message, f, error); |
| if (r == 0 && u->transient && u->load_state == UNIT_STUB) |
| r = bus_unit_set_transient_property(u, name, message, f, error); |
| if (r == 0) |
| r = bus_unit_set_live_property(u, name, message, f, error); |
| if (r < 0) |
| return r; |
| |
| if (r == 0) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name); |
| |
| r = sd_bus_message_exit_container(message); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_message_exit_container(message); |
| if (r < 0) |
| return r; |
| |
| n += for_real; |
| } |
| |
| r = sd_bus_message_exit_container(message); |
| if (r < 0) |
| return r; |
| |
| if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties) |
| UNIT_VTABLE(u)->bus_commit_properties(u); |
| |
| return n; |
| } |
| |
| int bus_unit_check_load_state(Unit *u, sd_bus_error *error) { |
| assert(u); |
| |
| if (u->load_state == UNIT_LOADED) |
| return 0; |
| |
| /* Give a better description of the unit error when |
| * possible. Note that in the case of UNIT_MASKED, load_error |
| * is not set. */ |
| if (u->load_state == UNIT_MASKED) |
| return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit %s is masked.", u->id); |
| |
| if (u->load_state == UNIT_NOT_FOUND) |
| return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not found.", u->id); |
| |
| return sd_bus_error_set_errnof(error, u->load_error, "Unit %s is not loaded properly: %m.", u->id); |
| } |
| |
| static int bus_unit_track_handler(sd_bus_track *t, void *userdata) { |
| Unit *u = userdata; |
| |
| assert(t); |
| assert(u); |
| |
| u->bus_track = sd_bus_track_unref(u->bus_track); /* make sure we aren't called again */ |
| |
| unit_add_to_gc_queue(u); |
| return 0; |
| } |
| |
| static int bus_unit_allocate_bus_track(Unit *u) { |
| int r; |
| |
| assert(u); |
| |
| if (u->bus_track) |
| return 0; |
| |
| r = sd_bus_track_new(u->manager->api_bus, &u->bus_track, bus_unit_track_handler, u); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_track_set_recursive(u->bus_track, true); |
| if (r < 0) { |
| u->bus_track = sd_bus_track_unref(u->bus_track); |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| int bus_unit_track_add_name(Unit *u, const char *name) { |
| int r; |
| |
| assert(u); |
| |
| r = bus_unit_allocate_bus_track(u); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_track_add_name(u->bus_track, name); |
| } |
| |
| int bus_unit_track_add_sender(Unit *u, sd_bus_message *m) { |
| int r; |
| |
| assert(u); |
| |
| r = bus_unit_allocate_bus_track(u); |
| if (r < 0) |
| return r; |
| |
| return sd_bus_track_add_sender(u->bus_track, m); |
| } |
| |
| int bus_unit_track_remove_sender(Unit *u, sd_bus_message *m) { |
| assert(u); |
| |
| /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet, return an |
| * error */ |
| if (!u->bus_track) |
| return -EUNATCH; |
| |
| return sd_bus_track_remove_sender(u->bus_track, m); |
| } |