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#!@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 -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 up kernel support for efivarfs
# slightly complicated, as if it's build as a module but NOT yet loaded,
# it will NOT appear in /proc/filesystems yet
if [ -d /sys/firmware/efi/efivars ] \
&& ! mountinfo -q /sys/firmware/efi/efivars; then
modprobe -q efivarfs
if grep -qs efivarfs /proc/filesystems; then
ebegin "Mounting efivarfs filesystem"
mount -n -t efivarfs -o ${sysfs_opts} \
efivarfs /sys/firmware/efi/efivars
eend $?
fi
fi
}
mount_cgroups()
{
# set up kernel support for cgroups
if [ -d /sys/fs/cgroup ] && ! mountinfo -q /sys/fs/cgroup; then
if grep -qs cgroup /proc/filesystems; then
ebegin "Mounting cgroup filesystem"
local opts="${sysfs_opts},mode=755,size=${rc_cgroupsize:-10m}"
mount -n -t tmpfs -o ${opts} cgroup_root /sys/fs/cgroup
eend $?
fi
fi
mountinfo -q /sys/fs/cgroup || return 0
if ! mountinfo -q /sys/fs/cgroup/openrc; then
local agent="@LIBEXECDIR@/sh/cgroup-release-agent.sh"
mkdir /sys/fs/cgroup/openrc
mount -n -t cgroup \
-o none,${sysfs_opts},name=openrc,release_agent="$agent" \
openrc /sys/fs/cgroup/openrc
printf 1 > /sys/fs/cgroup/openrc/notify_on_release
fi
yesno ${rc_controller_cgroups:-YES} && [ -e /proc/cgroups ] || return 0
while read name hier groups enabled rest; do
case "${enabled}" in
1) mountinfo -q /sys/fs/cgroup/${name} && continue
mkdir /sys/fs/cgroup/${name}
mount -n -t cgroup -o ${sysfs_opts},${name} \
${name} /sys/fs/cgroup/${name}
;;
esac
done < /proc/cgroups
}
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
}
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