openrc/init.d/sysfs.in

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#!@PREFIX@/sbin/runscript
# Copyright 2007-2008 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.
description="Mount the sys filesystem."
depend()
{
keyword noprefix
}
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 noexec,nosuid,nodev 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 -t securityfs -o nodev,noexec,nosuid \
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 -t debugfs -o nodev,noexec,nosuid \
debugfs /sys/kernel/debug
eend $?
fi
fi
}
start()
{
local retval
mount_sys
retval=$?
if [ ${retval} -eq 0 ]; then
mount_misc
fi
return ${retval}
}