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#!@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()
{
# relocate starting process to the top of the cgroup
# it prevents from unwanted inheriting of the user
# cgroups. But may lead to a problems where that inheriting
# is needed.
for d in /sys/fs/cgroup/* ; do
echo 0 > "${d}"/tasks
done
openrc_cgroup=/sys/fs/cgroup/openrc
if [ -d "$openrc_cgroup" ]; then
cgroup="$openrc_cgroup/$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"
}
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