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
|
#!@SBINDIR@/openrc-run
# Copyright (c) 2007-2015 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.
description="Mount the sys filesystem."
sysfs_opts=nodev,noexec,nosuid
depend()
{
keyword -docker -lxc -prefix -systemd-nspawn -vserver
}
mount_sys()
{
grep -Eq "[[:space:]]+sysfs$" /proc/filesystems || return 1
mountinfo -q /sys && return 0
if [ ! -d /sys ]; then
if ! mkdir -m 0755 /sys; then
ewarn "Could not create /sys!"
return 1
fi
fi
ebegin "Mounting /sys"
if ! fstabinfo --mount /sys; then
mount -n -t sysfs -o ${sysfs_opts} sysfs /sys
fi
eend $?
}
mount_misc()
{
# Setup Kernel Support for securityfs
if [ -d /sys/kernel/security ] && \
! mountinfo -q /sys/kernel/security; then
if grep -qs securityfs /proc/filesystems; then
ebegin "Mounting security filesystem"
mount -n -t securityfs -o ${sysfs_opts} \
securityfs /sys/kernel/security
eend $?
fi
fi
# Setup Kernel Support for debugfs
if [ -d /sys/kernel/debug ] && ! mountinfo -q /sys/kernel/debug; then
if grep -qs debugfs /proc/filesystems; then
ebegin "Mounting debug filesystem"
mount -n -t debugfs -o ${sysfs_opts} debugfs /sys/kernel/debug
eend $?
fi
fi
# Setup Kernel Support for configfs
if [ -d /sys/kernel/config ] && ! mountinfo -q /sys/kernel/config; then
if grep -qs configfs /proc/filesystems; then
ebegin "Mounting config filesystem"
mount -n -t configfs -o ${sysfs_opts} configfs /sys/kernel/config
eend $?
fi
fi
# set up kernel support for fusectl
if [ -d /sys/fs/fuse/connections ] \
&& ! mountinfo -q /sys/fs/fuse/connections; then
if grep -qs fusectl /proc/filesystems; then
ebegin "Mounting fuse control filesystem"
mount -n -t fusectl -o ${sysfs_opts} \
fusectl /sys/fs/fuse/connections
eend $?
fi
fi
# Setup Kernel Support for SELinux
if [ -d /sys/fs/selinux ] && ! mountinfo -q /sys/fs/selinux; then
if grep -qs selinuxfs /proc/filesystems; then
ebegin "Mounting SELinux filesystem"
mount -t selinuxfs selinuxfs /sys/fs/selinux
eend $?
fi
fi
# Setup Kernel Support for persistent storage
if [ -d /sys/fs/pstore ] && ! mountinfo -q /sys/fs/pstore; then
if grep -qs 'pstore$' /proc/filesystems; then
ebegin "Mounting persistent storage (pstore) filesystem"
mount -t pstore pstore -o ${sysfs_opts} /sys/fs/pstore
eend $?
fi
fi
# set up kernel support for efivarfs
if [ -d /sys/firmware/efi/efivars ] &&
! mountinfo -q /sys/firmware/efi/efivars; then
ebegin "Mounting efivarfs filesystem"
mount -n -t efivarfs -o ro \
efivarfs /sys/firmware/efi/efivars 2> /dev/null
eend 0
fi
}
cgroup1_base()
{
grep -qw cgroup /proc/filesystems || return 0
if ! mountinfo -q /sys/fs/cgroup; then
ebegin "Mounting cgroup filesystem"
local opts="${sysfs_opts},mode=755,size=${rc_cgroupsize:-10m}"
mount -n -t tmpfs -o "${opts}" cgroup_root /sys/fs/cgroup
eend $?
fi
if ! mountinfo -q /sys/fs/cgroup/openrc; then
local agent="${RC_LIBEXECDIR}/sh/cgroup-release-agent.sh"
mkdir /sys/fs/cgroup/openrc
mount -n -t cgroup \
-o none,${sysfs_opts},name=openrc,release_agent="$agent" \
openrc /sys/fs/cgroup/openrc
printf 1 > /sys/fs/cgroup/openrc/notify_on_release
fi
return 0
}
cgroup1_controllers()
{
yesno "${rc_controller_cgroups:-YES}" && [ -e /proc/cgroups ] || return 0
while read -r name _ _ enabled rest; do
case "${enabled}" in
1) mountinfo -q "/sys/fs/cgroup/${name}" && continue
local x
for x in $rc_cgroup_controllers; do
[ "${name}" = "blkio" ] && [ "${x}" = "io" ] &&
continue 2
[ "${name}" = "${x}" ] &&
continue 2
done
mkdir "/sys/fs/cgroup/${name}"
mount -n -t cgroup -o "${sysfs_opts},${name}" \
"${name}" "/sys/fs/cgroup/${name}"
;;
esac
done < /proc/cgroups
return 0
}
cgroup2_base()
{
local base
base="$(cgroup2_find_path)"
mkdir -p "${base}"
mount -t cgroup2 none -o "${sysfs_opts},nsdelegate" "${base}" 2> /dev/null ||
mount -t cgroup2 none -o "${sysfs_opts}" "${base}"
return 0
}
cgroup2_controllers()
{
local active cgroup_path x y
cgroup_path="$(cgroup2_find_path)"
[ -z "${cgroup_path}" ] && return 0
[ -e "${cgroup_path}/cgroup.controllers" ] &&
read -r active < "${cgroup_path}/cgroup.controllers"
for x in ${rc_cgroup_controllers}; do
for y in ${active}; do
[ "$x" = "$y" ] &&
[ -e "${cgroup_path}/cgroup.subtree_control" ]&&
echo "+${x}" > "${cgroup_path}/cgroup.subtree_control"
done
done
return 0
}
cgroups_hybrid()
{
grep -qw cgroup /proc/filesystems || return 0
cgroup1_base
if grep -qw cgroup2 /proc/filesystems; then
cgroup2_base
cgroup2_controllers
fi
cgroup1_controllers
return 0
}
cgroups_legacy()
{
grep -qw cgroup /proc/filesystems || return 0
cgroup1_base
cgroup1_controllers
return 0
}
cgroups_unified()
{
cgroup2_base
cgroup2_controllers
return 0
}
mount_cgroups()
{
# set up kernel support for cgroups
if [ -d /sys/fs/cgroup ]; then
case "${rc_cgroup_mode:-hybrid}" in
hybrid) cgroups_hybrid ;;
legacy) cgroups_legacy ;;
unified) cgroups_unified ;;
esac
fi
return 0
}
restorecon_sys()
{
if [ -x /sbin/restorecon ]; then
ebegin "Restoring SELinux contexts in /sys"
restorecon -F /sys/devices/system/cpu/online >/dev/null 2>&1
restorecon -rF /sys/fs/cgroup >/dev/null 2>&1
eend $?
fi
}
start()
{
mount_sys
mount_misc
mount_cgroups
restorecon_sys
return 0
}
|
