8e2af47840
This introduces two bus calls to make runtime changes to selected bus properties, optionally with persistence. This currently hooks this up only for three cgroup atributes, but this brings the infrastructure to add more changable attributes. This allows setting multiple attributes at once, and takes an array rather than a dictionary of properties, in order to implement simple resetting of lists using the same approach as when they are sourced from unit files. This means, that list properties are appended to by this call, unless they are first reset via assigning the empty list.
91 lines
3 KiB
C
91 lines
3 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 2013 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 <errno.h>
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#include "dbus-unit.h"
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#include "dbus-common.h"
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#include "dbus-cgroup.h"
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#include "selinux-access.h"
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#include "dbus-slice.h"
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#define BUS_SLICE_INTERFACE \
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" <interface name=\"org.freedesktop.systemd1.Slice\">\n" \
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" </interface>\n"
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#define INTROSPECTION \
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DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
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"<node>\n" \
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BUS_UNIT_INTERFACE \
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BUS_SLICE_INTERFACE \
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BUS_PROPERTIES_INTERFACE \
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BUS_PEER_INTERFACE \
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BUS_INTROSPECTABLE_INTERFACE \
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"</node>\n"
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#define INTERFACES_LIST \
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BUS_UNIT_INTERFACES_LIST \
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"org.freedesktop.systemd1.Slice\0"
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const char bus_slice_interface[] _introspect_("Slice") = BUS_SLICE_INTERFACE;
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DBusHandlerResult bus_slice_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
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Slice *s = SLICE(u);
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const BusBoundProperties bps[] = {
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{ "org.freedesktop.systemd1.Unit", bus_unit_properties, u },
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{ "org.freedesktop.systemd1.Slice", bus_cgroup_context_properties, &s->cgroup_context },
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{}
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};
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SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status");
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return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
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}
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int bus_slice_set_property(
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Unit *u,
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const char *name,
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DBusMessageIter *i,
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UnitSetPropertiesMode mode,
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DBusError *error) {
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Slice *s = SLICE(u);
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int r;
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assert(name);
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assert(u);
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assert(i);
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r = bus_cgroup_set_property(u, &s->cgroup_context, name, i, mode, error);
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if (r != 0)
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return r;
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return 0;
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}
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int bus_slice_commit_properties(Unit *u) {
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assert(u);
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unit_realize_cgroup(u);
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return 0;
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}
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