/lib/rc/sh/rc-cgroup.sh is in openrc 0.13.1-4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | #!/bin/sh
# 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
[ -f "${d}"/tasks ] && echo 0 > "${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()
{
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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