#!/sbin/runscript
# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

description="Mounts disks and swap according to /etc/fstab."
[ -e /proc/filessystems ] && description="${description} Also mounts various filesystems in /proc."
[ -x /sbin/dumpon ] && description="${description} Also configures saving kernel dumps to swap."

depend() {
	need checkfs
}

start() {
	# Mount local filesystems in /etc/fstab.
	local types="noproc" x=
	for x in ${RC_NET_FS_LIST} ; do
		types="${types},${x}"
	done

	ebegin "Mounting local filesystems"
	mount -at "${types}"
	eend $? "Some local filesystem failed to mount"

	# Change the mount options of already mounted paritions
	# This is needed when /usr is separate and coming back from single user
	if [ "${RC_UNAME}" != "Linux" ] ; then
		mount -uao fstab -t "${types},linprocfs"
	fi

	if [ -x /sbin/savecore ] ; then
		local dumpdir=${KERNEL_DUMP_DIR:-/var/crash}
		if ! [ -d "${dumpdir}" ]; then
			mkdir -p "${dumpdir}"
			chmod 700 "${dumpdir}"
		fi

		# Don't quote ${KERNEL_DUMP_DEVICE}, so that if it's unset, savecore
		# will check on the partitions listed in fstab without errors in the
		# output
		if savecore -C "${dumpdir}" ${KERNEL_DUMP_DEVICE} >/dev/null ; then
			local savecoreopts="${dumpdir} ${KERNEL_DUMP_DEVICE}"
			[ "${KERNEL_DUMP_COMPRESS}" = "yes" ] \
				&& savecoreopts="-z ${savecoreopts}"
			ebegin "Saving kernel core dump in" "${dumpdir}"
			savecore ${savecoreopts} >/dev/null
			eend $?
		fi
	fi

	# Sync bootlog now as /var should be mounted
	if type bootlog >/dev/null 2>/dev/null ; then
		bootlog sync 2>/dev/null
	fi

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

	if [ -e /proc/filesystems ] ; then
		# 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 /proc/fs/nfsd >/dev/null ; 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 /proc/sys/fs/binfmt_misc >/dev/null ; 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 /sys/kernel/security >/dev/null ; then
			if grep -qs securityfs /proc/filesystems ; then
				ebegin "Mounting security filesystem"
				mount -t securityfs securityfs /sys/kernel/security \
					-o nodev,noexec,nosuid
				eend $?
			fi
		fi

		# Setup Kernel Support for debugfs
		if [ -d /sys/kernel/debug ] && ! mountinfo /sys/kernel/debug >/dev/null ; then
			if grep -qs debugfs /proc/filesystems ; then
				ebegin "Mounting debug filesystem"
				mount -t debugfs debugfs /sys/kernel/debug \
					-o nodev,noexec,nosuid
				eend $?
			fi
		fi

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

	# We do our swapping here instead of rc so we can get urandom started
	# before us for people that like an encrypted swap.
	ebegin "Activating (possible) swap"
	swapon -a >/dev/null
	eend 0 # If swapon has nothing todo it errors, so always return 0 

	# Setup any user requested dump device
	if [ -x /sbin/dumpon -a -n "${KERNEL_DUMP_DEVICE}" ] ; then
		ebegin "Activating kernel core dump device" "(${KERNEL_DUMP_DEVICE})"
		dumpon "${KERNEL_DUMP_DEVICE}"
		eend $?
	fi

	# Always return 0 - some local mounts may not be critical for boot
	return 0
}

stop() {
	# Don't unmount anything for VPS systems
	[ "${RC_SYS}" = "VPS" ] && return 0

	# We never unmount / or /dev or $RC_LIBDIR
	local x= no_umounts="/|/dev|${RC_SVCDIR}"

	# NO_UMOUNTS is taken from /etc/conf.d/localmount
	# RC_NO_UMOUNTS is taken from /etc/conf.d/rc and can also be
	# set by plugins
	local OIFS=$IFS SIFS=${IFS-y}
	IFS=$IFS:
	for x in ${NO_UMOUNTS} ${RC_NO_UMOUNTS} ; do
		no_umounts="${no_umounts}|${x}"
	done
	if [ "${SIFS}" = "y" ] ; then
		IFS=$OIFS
	else
		unset IFS
	fi

	if [ "${RC_UNAME}" = "Linux" ] ; then
		no_umounts="${no_umounts}|/dev/pts|/dev/shm|/proc|/proc/.*|/sys"
	fi
	no_umounts="^(${no_umounts})$"

	# Flush all pending disk writes now
	sync ; sync

	# Try to unmount all tmpfs filesystems not in use, else a deadlock may
	# occure, bug #13599.
	# As $RC_SVCDIR may also be tmpfs we cd to it to lock it
	cd "${RC_SVCDIR}"
	umount -a -t tmpfs 2>/dev/null

	# As we're turning off swap below, we need to disable kernel dumps
	[ -x /sbin/dumpon ] && dumpon off

	local swap_list=
	# Turn off swap
	if [ -r /proc/swaps ] ;then
		swap_list=$(sed -e '1d' /proc/swaps)
	else
		swap_list=$(swapctl -l 2>/dev/null | sed -e '1d')
	fi
	if [ -n "${swap_list}" ] ; then
		ebegin "Deactivating swap"
		swapoff -a >/dev/null
		eend $?
	fi

	. "${RC_LIBDIR}"/sh/rc-mount.sh

	# Umount loopback devices
	einfo "Unmounting loopback devices"
	eindent
	do_unmount "umount -d" "${no_umounts}" "^/dev/loop"
	eoutdent

	# Now everything else
	einfo "Unmounting filesystems"
	eindent
	do_unmount "umount" "${no_umounts}"
	eoutdent

	return 0
}

# vim: set ts=4 :