1579 lines
56 KiB
C
1579 lines
56 KiB
C
/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "sd-bus.h"
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#include "alloc-util.h"
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#include "bus-common-errors.h"
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#include "cgroup-util.h"
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#include "dbus-unit.h"
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#include "dbus.h"
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#include "fd-util.h"
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#include "locale-util.h"
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#include "log.h"
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#include "process-util.h"
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#include "selinux-access.h"
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#include "signal-util.h"
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#include "special.h"
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#include "string-util.h"
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#include "strv.h"
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#include "user-util.h"
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static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state, unit_load_state, UnitLoadState);
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static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode, job_mode, JobMode);
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static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_failure_action, failure_action, FailureAction);
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static int property_get_names(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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Iterator i;
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const char *t;
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int r;
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assert(bus);
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assert(reply);
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assert(u);
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r = sd_bus_message_open_container(reply, 'a', "s");
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if (r < 0)
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return r;
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SET_FOREACH(t, u->names, i) {
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r = sd_bus_message_append(reply, "s", t);
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if (r < 0)
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return r;
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}
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return sd_bus_message_close_container(reply);
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}
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static int property_get_following(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata, *f;
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assert(bus);
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assert(reply);
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assert(u);
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f = unit_following(u);
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return sd_bus_message_append(reply, "s", f ? f->id : "");
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}
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static int property_get_dependencies(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Set *s = *(Set**) userdata;
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Iterator j;
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Unit *u;
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int r;
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assert(bus);
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assert(reply);
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r = sd_bus_message_open_container(reply, 'a', "s");
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if (r < 0)
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return r;
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SET_FOREACH(u, s, j) {
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r = sd_bus_message_append(reply, "s", u->id);
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if (r < 0)
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return r;
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}
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return sd_bus_message_close_container(reply);
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}
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static int property_get_obsolete_dependencies(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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assert(bus);
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assert(reply);
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/* For dependency types we don't support anymore always return an empty array */
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return sd_bus_message_append(reply, "as", 0);
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}
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static int property_get_description(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "s", unit_description(u));
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}
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static int property_get_active_state(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "s", unit_active_state_to_string(unit_active_state(u)));
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}
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static int property_get_sub_state(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "s", unit_sub_state_to_string(u));
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}
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static int property_get_unit_file_preset(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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int r;
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assert(bus);
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assert(reply);
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assert(u);
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r = unit_get_unit_file_preset(u);
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return sd_bus_message_append(reply, "s",
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r < 0 ? "":
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r > 0 ? "enabled" : "disabled");
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}
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static int property_get_unit_file_state(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "s", unit_file_state_to_string(unit_get_unit_file_state(u)));
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}
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static int property_get_can_start(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_start);
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}
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static int property_get_can_stop(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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/* On the lower levels we assume that every unit we can start
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* we can also stop */
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return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_stop);
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}
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static int property_get_can_reload(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "b", unit_can_reload(u));
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}
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static int property_get_can_isolate(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "b", unit_can_isolate(u) && !u->refuse_manual_start);
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}
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static int property_get_job(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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_cleanup_free_ char *p = NULL;
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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if (!u->job)
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return sd_bus_message_append(reply, "(uo)", 0, "/");
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p = job_dbus_path(u->job);
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if (!p)
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return -ENOMEM;
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return sd_bus_message_append(reply, "(uo)", u->job->id, p);
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}
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static int property_get_need_daemon_reload(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "b", unit_need_daemon_reload(u));
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}
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static int property_get_conditions(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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const char *(*to_string)(ConditionType type) = NULL;
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Condition **list = userdata, *c;
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int r;
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assert(bus);
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assert(reply);
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assert(list);
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to_string = streq(property, "Asserts") ? assert_type_to_string : condition_type_to_string;
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r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
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if (r < 0)
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return r;
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LIST_FOREACH(conditions, c, *list) {
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int tristate;
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tristate =
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c->result == CONDITION_UNTESTED ? 0 :
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c->result == CONDITION_SUCCEEDED ? 1 : -1;
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r = sd_bus_message_append(reply, "(sbbsi)",
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to_string(c->type),
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c->trigger, c->negate,
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c->parameter, tristate);
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if (r < 0)
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return r;
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}
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return sd_bus_message_close_container(reply);
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}
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static int property_get_load_error(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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_cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
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Unit *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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if (u->load_error != 0)
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sd_bus_error_set_errno(&e, u->load_error);
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return sd_bus_message_append(reply, "(ss)", e.name, e.message);
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}
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static int bus_verify_manage_units_async_full(
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Unit *u,
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const char *verb,
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int capability,
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const char *polkit_message,
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bool interactive,
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sd_bus_message *call,
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sd_bus_error *error) {
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const char *details[9] = {
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"unit", u->id,
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"verb", verb,
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};
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if (polkit_message) {
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details[4] = "polkit.message";
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details[5] = polkit_message;
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details[6] = "polkit.gettext_domain";
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details[7] = GETTEXT_PACKAGE;
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}
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return bus_verify_polkit_async(
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call,
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capability,
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"org.freedesktop.systemd1.manage-units",
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details,
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interactive,
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UID_INVALID,
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&u->manager->polkit_registry,
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error);
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}
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int bus_unit_method_start_generic(
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sd_bus_message *message,
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Unit *u,
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JobType job_type,
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bool reload_if_possible,
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sd_bus_error *error) {
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const char *smode;
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JobMode mode;
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_cleanup_free_ char *verb = NULL;
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static const char *const polkit_message_for_job[_JOB_TYPE_MAX] = {
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[JOB_START] = N_("Authentication is required to start '$(unit)'."),
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[JOB_STOP] = N_("Authentication is required to stop '$(unit)'."),
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[JOB_RELOAD] = N_("Authentication is required to reload '$(unit)'."),
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[JOB_RESTART] = N_("Authentication is required to restart '$(unit)'."),
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[JOB_TRY_RESTART] = N_("Authentication is required to restart '$(unit)'."),
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};
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int r;
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assert(message);
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assert(u);
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assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
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r = mac_selinux_unit_access_check(
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u, message,
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job_type_to_access_method(job_type),
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error);
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if (r < 0)
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return r;
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r = sd_bus_message_read(message, "s", &smode);
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if (r < 0)
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return r;
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mode = job_mode_from_string(smode);
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if (mode < 0)
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return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
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if (reload_if_possible)
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verb = strjoin("reload-or-", job_type_to_string(job_type), NULL);
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else
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verb = strdup(job_type_to_string(job_type));
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if (!verb)
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return -ENOMEM;
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r = bus_verify_manage_units_async_full(
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u,
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verb,
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CAP_SYS_ADMIN,
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job_type < _JOB_TYPE_MAX ? polkit_message_for_job[job_type] : NULL,
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true,
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message,
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error);
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if (r < 0)
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return r;
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if (r == 0)
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return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
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return bus_unit_queue_job(message, u, job_type, mode, reload_if_possible, error);
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}
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static int method_start(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(message, userdata, JOB_START, false, error);
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}
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static int method_stop(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(message, userdata, JOB_STOP, false, error);
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}
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static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(message, userdata, JOB_RELOAD, false, error);
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}
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static int method_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(message, userdata, JOB_RESTART, false, error);
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}
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static int method_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, false, error);
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}
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static int method_reload_or_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(message, userdata, JOB_RESTART, true, error);
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}
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static int method_reload_or_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, true, error);
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}
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int bus_unit_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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Unit *u = userdata;
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const char *swho;
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int32_t signo;
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KillWho who;
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int r;
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assert(message);
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assert(u);
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r = mac_selinux_unit_access_check(u, message, "stop", error);
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if (r < 0)
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return r;
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r = sd_bus_message_read(message, "si", &swho, &signo);
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if (r < 0)
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return r;
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if (isempty(swho))
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who = KILL_ALL;
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else {
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who = kill_who_from_string(swho);
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if (who < 0)
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return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
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}
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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", NULL, 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("JobTimeoutAction", "s", property_get_failure_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("StartLimitIntervalSec", "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_failure_action, offsetof(Unit, start_limit_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_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_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 (r == -EEXIST || r == 0)
|
|
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, NULL);
|
|
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);
|
|
|
|
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);
|
|
}
|
|
|
|
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_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, NULL, 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, NULL, 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 &&
|
|
(u->load_state == UNIT_NOT_FOUND || u->load_state == 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) ||
|
|
((type == JOB_RESTART || type == 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.", u->id);
|
|
|
|
r = manager_add_job(u->manager, type, u, mode, error, &j);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (sd_bus_message_get_bus(message) == u->manager->api_bus) {
|
|
if (!j->clients) {
|
|
r = sd_bus_track_new(sd_bus_message_get_bus(message), &j->clients, NULL, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_track_add_sender(j->clients, 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_transient_property(
|
|
Unit *u,
|
|
const char *name,
|
|
sd_bus_message *message,
|
|
UnitSetPropertiesMode mode,
|
|
sd_bus_error *error) {
|
|
|
|
int r;
|
|
|
|
assert(u);
|
|
assert(name);
|
|
assert(message);
|
|
|
|
if (streq(name, "Description")) {
|
|
const char *d;
|
|
|
|
r = sd_bus_message_read(message, "s", &d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (mode != UNIT_CHECK) {
|
|
r = unit_set_description(u, d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
unit_write_drop_in_format(u, mode, name, "[Unit]\nDescription=%s", d);
|
|
}
|
|
|
|
return 1;
|
|
|
|
} else if (streq(name, "DefaultDependencies")) {
|
|
int b;
|
|
|
|
r = sd_bus_message_read(message, "b", &b);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (mode != UNIT_CHECK) {
|
|
u->default_dependencies = b;
|
|
unit_write_drop_in_format(u, mode, name, "[Unit]\nDefaultDependencies=%s", yes_no(b));
|
|
}
|
|
|
|
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 (mode != UNIT_CHECK) {
|
|
r = unit_set_slice(u, slice);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
unit_write_drop_in_private_format(u, mode, name, "Slice=%s", s);
|
|
}
|
|
|
|
return 1;
|
|
|
|
} else if (STR_IN_SET(name,
|
|
"Requires", "RequiresOverridable",
|
|
"Requisite", "RequisiteOverridable",
|
|
"Wants",
|
|
"BindsTo",
|
|
"Conflicts",
|
|
"Before", "After",
|
|
"OnFailure",
|
|
"PropagatesReloadTo", "ReloadPropagatedFrom",
|
|
"PartOf")) {
|
|
|
|
UnitDependency d;
|
|
const char *other;
|
|
|
|
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)
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit dependency: %s", name);
|
|
}
|
|
|
|
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 (mode != UNIT_CHECK) {
|
|
_cleanup_free_ char *label = NULL;
|
|
|
|
r = unit_add_dependency_by_name(u, d, other, NULL, true);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
label = strjoin(name, "-", other, NULL);
|
|
if (!label)
|
|
return -ENOMEM;
|
|
|
|
unit_write_drop_in_format(u, mode, label, "[Unit]\n%s=%s", name, 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 (mode != UNIT_CHECK)
|
|
u->bus_track_add = b;
|
|
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_unit_set_properties(
|
|
Unit *u,
|
|
sd_bus_message *message,
|
|
UnitSetPropertiesMode mode,
|
|
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;
|
|
|
|
r = sd_bus_message_enter_container(message, 'r', "sv");
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0) {
|
|
if (for_real || mode == UNIT_CHECK)
|
|
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;
|
|
|
|
r = UNIT_VTABLE(u)->bus_set_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
|
|
if (r == 0 && u->transient && u->load_state == UNIT_STUB)
|
|
r = bus_unit_set_transient_property(u, name, message, for_real ? mode : UNIT_CHECK, 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_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 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_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 = 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 = 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);
|
|
}
|