blob: 392c8b3d07c1db932f33a8a795c076de98b9b13a (
plain)
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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
# Copyright (c) 2012-2015 The OpenRC Authors.
# See the Authors file at the top-level directory of this distribution and
# https://github.com/OpenRC/openrc/blob/master/AUTHORS
#
# This file is part of OpenRC. It is subject to the license terms in
# the LICENSE file found in the top-level directory of this
# distribution and at https://github.com/OpenRC/openrc/blob/master/LICENSE
# This file may not be copied, modified, propagated, or distributed
# except according to the terms contained in the LICENSE file.
extra_stopped_commands="${extra_stopped_commands} cgroup_cleanup"
description_cgroup_cleanup="Kill all processes in the cgroup"
cgroup_find_path()
{
local OIFS name dir result
[ -n "$1" ] || return 0
OIFS="$IFS"
IFS=":"
while read -r _ name dir; do
[ "$name" = "$1" ] && result="$dir"
done < /proc/1/cgroup
IFS="$OIFS"
printf "%s" "${result}"
}
# This extracts all pids in a cgroup and puts them in the cgroup_pids
# variable.
# It is done this way to avoid subshells so we don't have to worry about
# locating the pid of the subshell in the cgroup.
# https://github.com/openrc/openrc/issues/396
cgroup_get_pids()
{
local cgroup_procs p
cgroup_pids=
cgroup_procs="$(cgroup2_find_path)"
if [ -n "${cgroup_procs}" ]; then
cgroup_procs="${cgroup_procs}/${RC_SVCNAME}/cgroup.procs"
else
cgroup_procs="/sys/fs/cgroup/openrc/${RC_SVCNAME}/tasks"
fi
[ -f "${cgroup_procs}" ] || return 0
while read -r p; do
[ "$p" -eq $$ ] && continue
cgroup_pids="${cgroup_pids} ${p}"
done < "${cgroup_procs}"
return 0
}
cgroup_running()
{
[ -d "/sys/fs/cgroup/unified/${RC_SVCNAME}" ] ||
[ -d "/sys/fs/cgroup/${RC_SVCNAME}" ] ||
[ -d "/sys/fs/cgroup/openrc/${RC_SVCNAME}" ]
}
cgroup_set_values()
{
[ -n "$1" ] && [ -n "$2" ] && [ -d "/sys/fs/cgroup/$1" ] || return 0
local controller h
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" ] && [ "$controller" != "cpuacct" ]; do
case "$1" in
$controller.*)
if [ -n "${name}" ] && [ -w "${cgroup}/${name}" ] &&
[ -n "${val}" ]; then
veinfo "$RC_SVCNAME: Setting $cgroup/$name to $val"
printf "%s" "$val" > "$cgroup/$name"
fi
name=$1
val=
;;
*)
[ -n "$val" ] &&
val="$val $1" ||
val="$1"
;;
esac
shift
done
if [ -n "${name}" ] && [ -w "${cgroup}/${name}" ] && [ -n "${val}" ]; then
veinfo "$RC_SVCNAME: Setting $cgroup/$name to $val"
printf "%s" "$val" > "$cgroup/$name"
fi
if [ -w "$cgroup/tasks" ]; then
veinfo "$RC_SVCNAME: adding to $cgroup/tasks"
printf "%d" 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
[ -w "${d}"/tasks ] && printf "%d" 0 > "${d}"/tasks
done
openrc_cgroup=/sys/fs/cgroup/openrc
if [ -d "$openrc_cgroup" ]; then
cgroup="$openrc_cgroup/$RC_SVCNAME"
mkdir -p "$cgroup"
[ -w "$cgroup/tasks" ] && printf "%d" 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 hugetlb="${rc_cgroup_hugetlb:-$RC_CGROUP_HUGETLB}"
[ -n "$hugetlb" ] && cgroup_set_values hugetlb "$hugetlb"
local memory="${rc_cgroup_memory:-$RC_CGROUP_MEMORY}"
[ -n "$memory" ] && cgroup_set_values memory "$memory"
local net_cls="${rc_cgroup_net_cls:-$RC_CGROUP_NET_CLS}"
[ -n "$net_cls" ] && cgroup_set_values net_cls "$net_cls"
local net_prio="${rc_cgroup_net_prio:-$RC_CGROUP_NET_PRIO}"
[ -n "$net_prio" ] && cgroup_set_values net_prio "$net_prio"
local pids="${rc_cgroup_pids:-$RC_CGROUP_PIDS}"
[ -n "$pids" ] && cgroup_set_values pids "$pids"
return 0
}
cgroup2_find_path()
{
if grep -qw cgroup2 /proc/filesystems; then
case "${rc_cgroup_mode:-hybrid}" in
hybrid) printf "/sys/fs/cgroup/unified" ;;
unified) printf "/sys/fs/cgroup" ;;
esac
fi
return 0
}
cgroup2_remove()
{
local cgroup_path rc_cgroup_path
cgroup_path="$(cgroup2_find_path)"
[ -z "${cgroup_path}" ] && return 0
rc_cgroup_path="${cgroup_path}/${RC_SVCNAME}"
[ ! -d "${rc_cgroup_path}" ] ||
[ ! -e "${rc_cgroup_path}"/cgroup.events ] &&
return 0
grep -qx "$$" "${rc_cgroup_path}/cgroup.procs" &&
printf "%d" 0 > "${cgroup_path}/cgroup.procs"
local key populated vvalue
while read -r key value; do
case "${key}" in
populated) populated=${value} ;;
*) ;;
esac
done < "${rc_cgroup_path}/cgroup.events"
[ "${populated}" = 1 ] && return 0
rmdir "${rc_cgroup_path}"
return 0
}
cgroup2_set_limits()
{
local cgroup_path
cgroup_path="$(cgroup2_find_path)"
[ -z "${cgroup_path}" ] && return 0
mountinfo -q "${cgroup_path}"|| return 0
rc_cgroup_path="${cgroup_path}/${RC_SVCNAME}"
[ ! -d "${rc_cgroup_path}" ] && mkdir "${rc_cgroup_path}"
[ -f "${rc_cgroup_path}"/cgroup.procs ] &&
printf 0 > "${rc_cgroup_path}"/cgroup.procs
[ -z "${rc_cgroup_settings}" ] && return 0
echo "${rc_cgroup_settings}" | while read -r key value; do
[ -z "${key}" ] && continue
[ -z "${value}" ] && continue
[ ! -f "${rc_cgroup_path}/${key}" ] && continue
veinfo "${RC_SVCNAME}: cgroups: setting ${key} to ${value}"
printf "%s" "${value}" > "${rc_cgroup_path}/${key}"
done
return 0
}
cgroup_cleanup()
{
cgroup_running || return 0
ebegin "starting cgroups cleanup"
local loops=0
cgroup_get_pids
if [ -n "${cgroup_pids}" ]; then
kill -s CONT ${cgroup_pids} 2> /dev/null
kill -s "${stopsig:-TERM}" ${cgroup_pids} 2> /dev/null
yesno "${rc_send_sighup:-no}" &&
kill -s HUP ${cgroup_pids} 2> /dev/null
kill -s "${stopsig:-TERM}" ${cgroup_pids} 2> /dev/null
cgroup_get_pids
while [ -n "$(cgroup_pids)" ] &&
[ "${loops}" -lt "${rc_timeout_stopsec:-90}" ]; do
loops=$((loops+1))
sleep 1
cgroup_get_pids
done
if [ -n "${cgroup_pids}" ] && yesno "${rc_send_sigkill:-yes}"; then
kill -s KILL ${cgroup_pids} 2> /dev/null
fi
fi
cgroup2_remove
cgroup_get_pids
[ -z "${cgroup_pids}" ]
eend $? "Unable to stop all processes"
return 0
}
|
