136 lines
3.3 KiB
Bash
136 lines
3.3 KiB
Bash
#!@SHELL@
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# Copyright (c) 2012 Alexander Vershilov <qnikst@gentoo.org>
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# Released under the 2-clause BSD license.
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extra_stopped_commands="${extra_stopped_commands} cgroup_cleanup"
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description_cgroup_cleanup="Kill all processes in the cgroup"
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cgroup_find_path()
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{
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local OIFS n name dir result
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[ -n "$1" ] || return 0
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OIFS="$IFS"
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IFS=":"
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while read n name dir; do
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[ "$name" = "$1" ] && result="$dir"
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done < /proc/1/cgroup
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IFS="$OIFS"
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echo $result
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}
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cgroup_get_pids()
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{
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local p
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pids=
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while read p; do
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[ $p -eq $$ ] || pids="${pids} ${p}"
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done < /sys/fs/cgroup/openrc/${RC_SVCNAME}/tasks
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[ -n "$pids" ]
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}
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cgroup_running()
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{
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[ -d "/sys/fs/cgroup/openrc/${RC_SVCNAME}" ]
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}
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cgroup_set_values()
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{
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[ -n "$1" -a -n "$2" -a -d "/sys/fs/cgroup/$1" ] || return 0
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local controller="$1" h=$(cgroup_find_path "$1")
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cgroup="/sys/fs/cgroup/${1}${h}openrc_${RC_SVCNAME}"
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[ -d "$cgroup" ] || mkdir -p "$cgroup"
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set -- $2
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local name val
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while [ -n "$1" -a "$controller" != "cpuacct" ]; do
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case "$1" in
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$controller.*)
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if [ -n "$name" -a -f "$cgroup/$name" -a -n "$val" ]; then
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veinfo "$RC_SVCNAME: Setting $cgroup/$name to $val"
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echo $val > "$cgroup/$name"
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fi
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name=$1
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val=
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;;
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*)
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val="$val $1"
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;;
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esac
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shift
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done
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if [ -n "$name" -a -f "$cgroup/$name" -a -n "$val" ]; then
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veinfo "$RC_SVCNAME: Setting $cgroup/$name to $val"
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echo $val > "$cgroup/$name"
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fi
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if [ -f "$cgroup/tasks" ]; then
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veinfo "$RC_SVCNAME: adding to $cgroup/tasks"
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echo 0 > "$cgroup/tasks"
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fi
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return 0
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}
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cgroup_add_service()
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{
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# relocate starting process to the top of the cgroup
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# it prevents from unwanted inheriting of the user
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# cgroups. But may lead to a problems where that inheriting
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# is needed.
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for d in /sys/fs/cgroup/* ; do
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[ -f "${d}"/tasks ] && echo 0 > "${d}"/tasks
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done
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openrc_cgroup=/sys/fs/cgroup/openrc
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if [ -d "$openrc_cgroup" ]; then
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cgroup="$openrc_cgroup/$RC_SVCNAME"
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mkdir -p "$cgroup"
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[ -f "$cgroup/tasks" ] && echo 0 > "$cgroup/tasks"
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fi
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}
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cgroup_set_limits()
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{
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local blkio="${rc_cgroup_blkio:-$RC_CGROUP_BLKIO}"
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[ -n "$blkio" ] && cgroup_set_values blkio "$blkio"
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local cpu="${rc_cgroup_cpu:-$RC_CGROUP_CPU}"
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[ -n "$cpu" ] && cgroup_set_values cpu "$cpu"
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local cpuacct="${rc_cgroup_cpuacct:-$RC_CGROUP_CPUACCT}"
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[ -n "$cpuacct" ] && cgroup_set_values cpuacct "$cpuacct"
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local cpuset="${rc_cgroup_cpuset:-$RC_CGROUP_cpuset}"
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[ -n "$cpuset" ] && cgroup_set_values cpuset "$cpuset"
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local devices="${rc_cgroup_devices:-$RC_CGROUP_DEVICES}"
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[ -n "$devices" ] && cgroup_set_values devices "$devices"
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local memory="${rc_cgroup_memory:-$RC_CGROUP_MEMORY}"
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[ -n "$memory" ] && cgroup_set_values memory "$memory"
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local net_prio="${rc_cgroup_net_prio:-$RC_CGROUP_NET_PRIO}"
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[ -n "$net_prio" ] && cgroup_set_values net_prio "$net_prio"
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return 0
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}
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cgroup_cleanup()
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{
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cgroup_running || return 0
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ebegin "starting cgroups cleanup"
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for sig in TERM QUIT INT; do
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cgroup_get_pids || { eend 0 "finished" ; return 0 ; }
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for i in 0 1; do
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kill -s $sig $pids
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for j in 0 1 2; do
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cgroup_get_pids || { eend 0 "finished" ; return 0 ; }
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sleep 1
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done
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done 2>/dev/null
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done
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cgroup_get_pids || { eend 0 "finished" ; return 0; }
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kill -9 $pids
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eend $(cgroup_running && echo 1 || echo 0) "fail to stop all processes"
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}
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