983 lines
34 KiB
C
983 lines
34 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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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 "log.h"
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#include "selinux-access.h"
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#include "cgroup-util.h"
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#include "strv.h"
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#include "path-util.h"
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#include "fileio.h"
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#include "dbus-unit.h"
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#include "dbus-manager.h"
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#include "bus-errors.h"
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#include "dbus-client-track.h"
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static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state, unit_load_state, UnitLoadState);
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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_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_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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Unit *u = userdata;
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Condition *c;
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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', "(sbbsi)");
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if (r < 0)
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return r;
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LIST_FOREACH(conditions, c, u->conditions) {
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r = sd_bus_message_append(reply, "sbbsi", condition_type_to_string(c->type), c->trigger, c->negate, c->parameter, c->state);
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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_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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int bus_unit_method_start_generic(sd_bus *bus, sd_bus_message *message, Unit *u, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
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const char *smode;
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JobMode mode;
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int r;
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assert(bus);
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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 = 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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return bus_unit_queue_job(bus, message, u, job_type, mode, reload_if_possible, error);
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}
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static int method_start(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(bus, message, userdata, JOB_START, false, error);
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}
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static int method_stop(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(bus, message, userdata, JOB_STOP, false, error);
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}
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static int method_reload(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(bus, message, userdata, JOB_RELOAD, false, error);
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}
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static int method_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, false, error);
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}
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static int method_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, false, error);
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}
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static int method_reload_or_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, true, error);
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}
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static int method_reload_or_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, true, error);
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}
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int bus_unit_method_kill(sd_bus *bus, 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(bus);
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assert(message);
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assert(u);
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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 (signo <= 0 || signo >= _NSIG)
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return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
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r = selinux_unit_access_check(u, bus, message, "stop", error);
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if (r < 0)
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return r;
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r = unit_kill(u, who, signo, error);
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if (r < 0)
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return r;
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return sd_bus_reply_method_return(message, NULL);
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}
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int bus_unit_method_reset_failed(sd_bus *bus, sd_bus_message *message, void *userdata, 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(message);
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assert(u);
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r = selinux_unit_access_check(u, bus, message, "reload", error);
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if (r < 0)
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return r;
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unit_reset_failed(u);
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return sd_bus_reply_method_return(message, NULL);
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}
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int bus_unit_method_set_properties(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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Unit *u = userdata;
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int runtime, r;
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assert(bus);
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assert(message);
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assert(u);
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r = sd_bus_message_read(message, "b", &runtime);
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if (r < 0)
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return r;
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r = selinux_unit_access_check(u, bus, message, "start", error);
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if (r < 0)
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return r;
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r = sd_bus_message_enter_container(message, 'a', "(sv)");
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if (r < 0)
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return r;
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r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
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if (r < 0)
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return r;
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r = sd_bus_message_exit_container(message);
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if (r < 0)
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return r;
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return sd_bus_reply_method_return(message, NULL);
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}
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const sd_bus_vtable bus_unit_vtable[] = {
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SD_BUS_VTABLE_START(0),
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SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), 0),
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SD_BUS_PROPERTY("Names", "as", property_get_names, 0, 0),
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SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
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SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), 0),
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SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), 0),
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SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), 0),
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SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), 0),
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SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), 0),
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SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), 0),
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SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), 0),
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SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), 0),
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SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), 0),
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SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), 0),
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SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), 0),
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SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), 0),
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SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), 0),
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SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), 0),
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SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), 0),
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SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), 0),
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SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), 0),
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SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), 0),
|
|
SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), 0),
|
|
SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), 0),
|
|
SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), 0),
|
|
SD_BUS_PROPERTY("RequiresMountsFor", "as", NULL, offsetof(Unit, requires_mounts_for), 0),
|
|
SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), 0),
|
|
SD_BUS_PROPERTY("Description", "s", property_get_description, 0, 0),
|
|
SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), 0),
|
|
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), 0),
|
|
SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), 0),
|
|
SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), 0),
|
|
SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
|
|
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, 0),
|
|
SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, 0),
|
|
SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, 0),
|
|
SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, 0),
|
|
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), 0),
|
|
SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), 0),
|
|
SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), 0),
|
|
SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), 0),
|
|
SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), 0),
|
|
SD_BUS_PROPERTY("OnFailureIsolate", "b", bus_property_get_bool, offsetof(Unit, on_failure_isolate), 0),
|
|
SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), 0),
|
|
SD_BUS_PROPERTY("IgnoreOnSnapshot", "b", bus_property_get_bool, offsetof(Unit, ignore_on_snapshot), 0),
|
|
SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, 0),
|
|
SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), 0),
|
|
SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, 0, 0),
|
|
SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, 0),
|
|
SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), 0),
|
|
|
|
SD_BUS_METHOD("Start", "s", "o", method_start, 0),
|
|
SD_BUS_METHOD("Stop", "s", "o", method_stop, 0),
|
|
SD_BUS_METHOD("Reload", "s", "o", method_reload, 0),
|
|
SD_BUS_METHOD("Restart", "s", "o", method_restart, 0),
|
|
SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, 0),
|
|
SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, 0),
|
|
SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, 0),
|
|
SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, 0),
|
|
SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, 0),
|
|
SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, 0),
|
|
|
|
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));
|
|
}
|
|
|
|
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", NULL, offsetof(Unit, cgroup_path), 0),
|
|
SD_BUS_VTABLE_END
|
|
};
|
|
|
|
static int send_new_signal(sd_bus *bus, const char *destination, void *userdata) {
|
|
_cleanup_bus_message_unref_ 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 (!u)
|
|
return -ENOMEM;
|
|
|
|
r = sd_bus_message_new_signal(
|
|
bus,
|
|
"/org/freedesktop/systemd1",
|
|
"org.freedesktop.systemd1.Manager",
|
|
"UnitNew",
|
|
&m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(m, "so", u->id, p);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return sd_bus_send_to(bus, m, destination, NULL);
|
|
}
|
|
|
|
static int send_changed_signal(sd_bus *bus, const char *destination, void *userdata) {
|
|
_cleanup_free_ char *p = NULL;
|
|
Unit *u = userdata;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(u);
|
|
|
|
p = unit_dbus_path(u);
|
|
if (!u)
|
|
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. */
|
|
|
|
if (UNIT_VTABLE(u)->bus_changing_properties) {
|
|
|
|
r = sd_bus_emit_properties_changed_strv(
|
|
bus, p,
|
|
UNIT_VTABLE(u)->bus_interface,
|
|
(char**) UNIT_VTABLE(u)->bus_changing_properties);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return sd_bus_emit_properties_changed(
|
|
bus, p,
|
|
"org.freedesktop.systemd1.Unit",
|
|
"ActiveState",
|
|
"SubState",
|
|
"InactiveExitTimestamp",
|
|
"ActiveEnterTimestamp",
|
|
"ActiveExitTimestamp",
|
|
"InactiveEnterTimestamp",
|
|
"Job",
|
|
"ConditionResult",
|
|
"ConditionTimestamp",
|
|
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_manager_foreach_client(u->manager, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
|
|
if (r < 0)
|
|
log_warning("Failed to send unit change signal for %s: %s", u->id, strerror(-r));
|
|
|
|
u->sent_dbus_new_signal = true;
|
|
}
|
|
|
|
static int send_removed_signal(sd_bus *bus, const char *destination, void *userdata) {
|
|
_cleanup_bus_message_unref_ 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 (!u)
|
|
return -ENOMEM;
|
|
|
|
r = sd_bus_message_new_signal(
|
|
bus,
|
|
"/org/freedesktop/systemd1",
|
|
"org.freedesktop.systemd1.Manager",
|
|
"UnitRemoved",
|
|
&m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(m, "so", u->id, p);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return sd_bus_send_to(bus, m, destination, NULL);
|
|
}
|
|
|
|
void bus_unit_send_removed_signal(Unit *u) {
|
|
int r;
|
|
|
|
assert(u);
|
|
|
|
if (!u->sent_dbus_new_signal)
|
|
bus_unit_send_change_signal(u);
|
|
|
|
if (!u->id)
|
|
return;
|
|
|
|
r = bus_manager_foreach_client(u->manager, send_removed_signal, u);
|
|
if (r < 0)
|
|
log_warning("Failed to send unit change signal for %s: %s", u->id, strerror(-r));
|
|
}
|
|
|
|
int bus_unit_queue_job(
|
|
sd_bus *bus,
|
|
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(bus);
|
|
assert(message);
|
|
assert(u);
|
|
assert(type >= 0 && type < _JOB_TYPE_MAX);
|
|
assert(mode >= 0 && mode < _JOB_MODE_MAX);
|
|
|
|
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_RELOAD;
|
|
}
|
|
|
|
r = selinux_unit_access_check(
|
|
u, bus, message,
|
|
(type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" :
|
|
type == JOB_STOP ? "stop" : "reload", error);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
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)))
|
|
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, true, error, &j);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_client_track(&j->subscribed, bus, sd_bus_message_get_sender(message));
|
|
if (r < 0)
|
|
return r;
|
|
|
|
path = job_dbus_path(j);
|
|
if (!path)
|
|
return r;
|
|
|
|
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\n", d);
|
|
}
|
|
|
|
return 1;
|
|
|
|
} else if (streq(name, "Slice") && unit_get_cgroup_context(u)) {
|
|
const char *s;
|
|
|
|
r = sd_bus_message_read(message, "s", &s);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!unit_name_is_valid(s, false) || !endswith(s, ".slice"))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid slice name %s", s);
|
|
|
|
if (isempty(s)) {
|
|
if (mode != UNIT_CHECK) {
|
|
unit_ref_unset(&u->slice);
|
|
unit_remove_drop_in(u, mode, name);
|
|
}
|
|
} else {
|
|
Unit *slice;
|
|
|
|
r = manager_load_unit(u->manager, s, NULL, error, &slice);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (slice->type != UNIT_SLICE)
|
|
return -EINVAL;
|
|
|
|
if (mode != UNIT_CHECK) {
|
|
unit_ref_set(&u->slice, slice);
|
|
unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
|
|
} else if (streq(name, "Requires") ||
|
|
streq(name, "RequiresOverridable") ||
|
|
streq(name, "Requisite") ||
|
|
streq(name, "RequisiteOverridable") ||
|
|
streq(name, "Wants") ||
|
|
streq(name, "BindsTo") ||
|
|
streq(name, "Conflicts") ||
|
|
streq(name, "Before") ||
|
|
streq(name, "After") ||
|
|
streq(name, "OnFailure") ||
|
|
streq(name, "PropagatesReloadTo") ||
|
|
streq(name, "ReloadPropagatedFrom") ||
|
|
streq(name, "PartOf")) {
|
|
|
|
UnitDependency d;
|
|
const char *other;
|
|
|
|
d = unit_dependency_from_string(name);
|
|
if (d < 0)
|
|
return -EINVAL;
|
|
|
|
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, false))
|
|
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\n", name, other);
|
|
}
|
|
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
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);
|
|
|
|
if (u->transient)
|
|
mode &= UNIT_RUNTIME;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
|
|
UNIT_VTABLE(u)->bus_commit_properties(u);
|
|
|
|
return n;
|
|
}
|