#!/sbin/runscript
# Copyright 2007-2008 Roy Marples
# All rights reserved

description="Mounts misc filesystems in /proc."

depend()
{
	need checkfs
}

start()
{
	# Make sure we insert usbcore if its a module
	if [ -f /proc/modules -a ! -d /proc/bus/usb ]; then
		modprobe -q usbcore
	fi

	[ -e /proc/filesystems ] || return 0

	# Check what USB fs the kernel support.  Currently
	# 2.5+ kernels, and later 2.4 kernels have 'usbfs',
	# while older kernels have 'usbdevfs'.
	if [ -d /proc/bus/usb -a ! -e /proc/bus/usb/devices ]; then
		local usbfs=$(grep -Fow usbfs /proc/filesystems ||
					  grep -Fow usbdevfs /proc/filesystems)
		if [ -n "${usbfs}" ]; then
			ebegin "Mounting USB device filesystem (${usbfs})"
			local usbgid="$(getent group usb | \
				sed -e 's/.*:.*:\(.*\):.*/\1/')"
			mount -t ${usbfs} \
				-o ${usbgid:+devmode=0664,devgid=${usbgid},}noexec,nosuid \
				usbfs /proc/bus/usb
			eend $?
		fi
	fi

	# Setup Kernel Support for the NFS daemon status
	if [ -d /proc/fs/nfsd ] && ! mountinfo -q /proc/fs/nfsd; then
		if grep -qs nfsd /proc/filesystems; then
			ebegin "Mounting nfsd filesystem"
			mount -t nfsd -o nodev,noexec,nosuid \
				nfsd /proc/fs/nfsd
			eend $?
		fi
	fi

	# Setup Kernel Support for miscellaneous Binary Formats
	if [ -d /proc/sys/fs/binfmt_misc ] && ! mountinfo -q /proc/sys/fs/binfmt_misc; then
		if grep -qs binfmt_misc /proc/filesystems; then
			ebegin "Mounting misc binary format filesystem"
			mount -t binfmt_misc -o nodev,noexec,nosuid \
				binfmt_misc /proc/sys/fs/binfmt_misc
			eend $?
		fi
	fi

	# 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

	# Setup Kernel Support for SELinux
	if [ -d /selinux ] && ! mountinfo -q /selinux; then
		if grep -qs selinuxfs /proc/filesystems; then
			ebegin "Mounting SELinux filesystem"
			mount -t selinuxfs selinuxfs /selinux
			eend $?
		fi
	fi

	return 0
}