From a016b9228f338cb9b380ce7e00826ef462767d98 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 17 Jun 2013 21:33:26 +0200 Subject: core: add new .slice unit type for partitioning systems In order to prepare for the kernel cgroup rework, let's introduce a new unit type to systemd, the "slice". Slices can be arranged in a tree and are useful to partition resources freely and hierarchally by the user. Each service unit can now be assigned to one of these slices, and later on login users and machines may too. Slices translate pretty directly to the cgroup hierarchy, and the various objects can be assigned to any of the slices in the tree. --- src/core/dbus-slice.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 src/core/dbus-slice.c (limited to 'src/core/dbus-slice.c') diff --git a/src/core/dbus-slice.c b/src/core/dbus-slice.c new file mode 100644 index 0000000000..8a318faa55 --- /dev/null +++ b/src/core/dbus-slice.c @@ -0,0 +1,60 @@ +/*-*- 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 . +***/ + +#include + +#include "dbus-unit.h" +#include "dbus-slice.h" +#include "dbus-common.h" +#include "selinux-access.h" + +#define BUS_SLICE_INTERFACE \ + " \n" \ + BUS_UNIT_CGROUP_INTERFACE \ + " \n" + +#define INTROSPECTION \ + DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ + "\n" \ + BUS_UNIT_INTERFACE \ + BUS_SLICE_INTERFACE \ + BUS_PROPERTIES_INTERFACE \ + BUS_PEER_INTERFACE \ + BUS_INTROSPECTABLE_INTERFACE \ + "\n" + +#define INTERFACES_LIST \ + BUS_UNIT_INTERFACES_LIST \ + "org.freedesktop.systemd1.Slice\0" + +const char bus_slice_interface[] _introspect_("Slice") = BUS_SLICE_INTERFACE; + +DBusHandlerResult bus_slice_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) { + const BusBoundProperties bps[] = { + { "org.freedesktop.systemd1.Unit", bus_unit_properties, u }, + { "org.freedesktop.systemd1.Slice", bus_unit_cgroup_properties, u }, + { NULL, } + }; + + SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status"); + + return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps); +} -- cgit v1.2.3-54-g00ecf