openrc/sh/rc-cgroup.sh.in
William Hubbs 2391ddff77 cgroups: add support for systemd cgroup hierarchy
The systemd cgroup hierarchy support is being added so we can run
logind outside of systemd. This is needed because software that was
using consolekit is now migrating to logind.
We do not create this hierarchy, we just add services to it if it
exists.
2013-06-25 10:58:27 -05:00

126 lines
2.9 KiB
Bash

#!@SHELL@
# Copyright (c) 2012 Alexander Vershilov <qnikst@gentoo.org>
# Released under the 2-clause BSD license.
extra_stopped_commands="${extra_stopped_commands} cgroup_cleanup"
cgroup_find_path()
{
local OIFS n name dir result
[ -n "$1" ] || return 0
OIFS="$IFS"
IFS=":"
while read n name dir; do
[ "$name" = "$1" ] && result="$dir"
done < /proc/1/cgroup
IFS="$OIFS"
echo $result
}
cgroup_get_pids()
{
local p
pids=
while read p; do
[ $p -eq $$ ] || pids="${pids} ${p}"
done < /sys/fs/cgroup/openrc/${RC_SVCNAME}/tasks
[ -n "$pids" ]
}
cgroup_running()
{
[ -d "/sys/fs/cgroup/openrc/${RC_SVCNAME}" ]
}
cgroup_set_values()
{
[ -n "$1" -a -n "$2" -a -d "/sys/fs/cgroup/$1" ] || return 0
local controller="$1" h=$(cgroup_find_path "$1")
cgroup="/sys/fs/cgroup/${1}${h}openrc_${RC_SVCNAME}"
[ -d "$cgroup" ] || mkdir -p "$cgroup"
set -- $2
local name val
while [ -n "$1" -a "$controller" != "cpuacct" ]; do
case "$1" in
$controller.*)
if [ -n "$name" -a -f "$cgroup/$name" -a -n "$val" ]; then
veinfo "$RC_SVCNAME: Setting $cgroup/$name to $val"
echo $val > "$cgroup/$name"
fi
name=$1
val=
;;
*)
val="$val $1"
;;
esac
shift
done
if [ -n "$name" -a -f "$cgroup/$name" -a -n "$val" ]; then
veinfo "$RC_SVCNAME: Setting $cgroup/$name to $val"
echo $val > "$cgroup/$name"
fi
if [ -f "$cgroup/tasks" ]; then
veinfo "$RC_SVCNAME: adding to $cgroup/tasks"
echo 0 > "$cgroup/tasks"
fi
return 0
}
cgroup_add_service()
{
if [ -d "$1" ]; then
cgroup="$1/$RC_SVCNAME"
mkdir -p "$cgroup"
[ -f "$cgroup/tasks" ] && echo 0 > "$cgroup/tasks"
fi
}
cgroup_set_limits()
{
local blkio="${rc_cgroup_blkio:-$RC_CGROUP_BLKIO}"
[ -n "$blkio" ] && cgroup_set_values blkio "$blkio"
local cpu="${rc_cgroup_cpu:-$RC_CGROUP_CPU}"
[ -n "$cpu" ] && cgroup_set_values cpu "$cpu"
local cpuacct="${rc_cgroup_cpuacct:-$RC_CGROUP_CPUACCT}"
[ -n "$cpuacct" ] && cgroup_set_values cpuacct "$cpuacct"
local cpuset="${rc_cgroup_cpuset:-$RC_CGROUP_cpuset}"
[ -n "$cpuset" ] && cgroup_set_values cpuset "$cpuset"
local devices="${rc_cgroup_devices:-$RC_CGROUP_DEVICES}"
[ -n "$devices" ] && cgroup_set_values devices "$devices"
local memory="${rc_cgroup_memory:-$RC_CGROUP_MEMORY}"
[ -n "$memory" ] && cgroup_set_values memory "$memory"
local net_prio="${rc_cgroup_net_prio:-$RC_CGROUP_NET_PRIO}"
[ -n "$net_prio" ] && cgroup_set_values net_prio "$net_prio"
return 0
}
cgroup_cleanup()
{
yesno "${rc_cgroup_cleanup:-no}" && cgroup_running || return 0
ebegin "starting cgroups cleanup"
for sig in TERM QUIT INT; do
cgroup_get_pids || { eend 0 "finished" ; return 0 ; }
for i in 0 1; do
kill -s $sig $pids
for j in 0 1 2; do
cgroup_get_pids || { eend 0 "finished" ; return 0 ; }
sleep 1
done
done 2>/dev/null
done
cgroup_get_pids || { eend 0 "finished" ; return 0; }
kill -9 $pids
eend $(cgroup_running && echo 1 || echo 0) "fail to stop all processes"
}