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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include "dbus-unit.h"
#include "dbus-common.h"
#include "dbus-cgroup.h"
#include "dbus-kill.h"
#include "selinux-access.h"
#include "dbus-scope.h"
#define BUS_SCOPE_INTERFACE \
" <interface name=\"org.freedesktop.systemd1.Scope\">\n" \
" <property name=\"TimeoutStopUSec\" type=\"t\" access=\"read\"/>\n" \
BUS_KILL_CONTEXT_INTERFACE \
BUS_CGROUP_CONTEXT_INTERFACE \
" <property name=\"Result\" type=\"s\" access=\"read\"/>\n" \
" </interface>\n"
#define INTROSPECTION \
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
"<node>\n" \
BUS_UNIT_INTERFACE \
BUS_SCOPE_INTERFACE \
BUS_PROPERTIES_INTERFACE \
BUS_PEER_INTERFACE \
BUS_INTROSPECTABLE_INTERFACE \
"</node>\n"
#define INTERFACES_LIST \
BUS_UNIT_INTERFACES_LIST \
"org.freedesktop.systemd1.Scope\0"
const char bus_scope_interface[] _introspect_("Scope") = BUS_SCOPE_INTERFACE;
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_scope_append_scope_result, scope_result, ScopeResult);
static const BusProperty bus_scope_properties[] = {
{ "TimeoutStopUSec", bus_property_append_usec, "t", offsetof(Scope, timeout_stop_usec) },
{ "Result", bus_scope_append_scope_result, "s", offsetof(Scope, result) },
{}
};
DBusHandlerResult bus_scope_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
Scope *s = SCOPE(u);
const BusBoundProperties bps[] = {
{ "org.freedesktop.systemd1.Unit", bus_unit_properties, u },
{ "org.freedesktop.systemd1.Scope", bus_scope_properties, s },
{ "org.freedesktop.systemd1.Scope", bus_cgroup_context_properties, &s->cgroup_context },
{ "org.freedesktop.systemd1.Scope", bus_kill_context_properties, &s->kill_context },
{}
};
SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status");
return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
}
static int bus_scope_set_transient_property(
Scope *s,
const char *name,
DBusMessageIter *i,
UnitSetPropertiesMode mode,
DBusError *error) {
int r;
assert(name);
assert(s);
assert(i);
if (streq(name, "PIDs")) {
DBusMessageIter sub;
if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(i) != DBUS_TYPE_UINT32)
return -EINVAL;
r = set_ensure_allocated(&s->pids, trivial_hash_func, trivial_compare_func);
if (r < 0)
return r;
dbus_message_iter_recurse(i, &sub);
while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32) {
uint32_t pid;
dbus_message_iter_get_basic(&sub, &pid);
if (pid <= 1)
return -EINVAL;
r = set_put(s->pids, LONG_TO_PTR(pid));
if (r < 0 && r != -EEXIST)
return r;
dbus_message_iter_next(&sub);
}
if (set_size(s->pids) <= 0)
return -EINVAL;
return 1;
}
return 0;
}
int bus_scope_set_property(
Unit *u,
const char *name,
DBusMessageIter *i,
UnitSetPropertiesMode mode,
DBusError *error) {
Scope *s = SCOPE(u);
int r;
assert(name);
assert(u);
assert(i);
r = bus_cgroup_set_property(u, &s->cgroup_context, name, i, mode, error);
if (r != 0)
return r;
if (u->load_state == UNIT_STUB) {
/* While we are created we still accept PIDs */
r = bus_scope_set_transient_property(s, name, i, mode, error);
if (r != 0)
return r;
}
return 0;
}
int bus_scope_commit_properties(Unit *u) {
assert(u);
unit_realize_cgroup(u);
return 0;
}
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