# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/mount-efi.eclass,v 1.17 2009/10/09 20:57:08 vapier Exp $
#
# This eclass is really only useful for efi bootloaders.
#
# If the live system has a separate /efi partition configured, then this
# function tries to ensure that it's mounted in rw mode, exiting with an
# error if it cant. It does nothing if /efi isn't a separate partition.
#
# MAINTAINER: base-system@gentoo.org

inherit mount-boot

EXPORT_FUNCTIONS pkg_preinst pkg_prerm

mount-efi_mount_efi_partition() {
	if [[ -n ${DONT_MOUNT_EFI} ]] ; then
		return
	else
		elog
		elog "To avoid automounting and auto(un)installing with /boot/efi,"
		elog "just export the DONT_MOUNT_EFI variable."
		elog
	fi

	# note that /dev/EFI is in the Gentoo default /etc/fstab file
	local fstabstate=$(awk '!/^#|^[[:blank:]]+#|^\/dev\/EFI/ {print $2}' /etc/fstab | egrep "^/boot/efi$" )
	local procstate=$(awk '$2 ~ /^\/boot\/efi$/ {print $2}' /proc/mounts)
	local proc_ro=$(awk '{ print $2 " ," $4 "," }' /proc/mounts | sed -n '/\/boot\/efi .*,ro,/p')

	if [ -n "${fstabstate}" ] && [ -n "${procstate}" ]; then
		if [ -n "${proc_ro}" ]; then
			einfo
			einfo "Your efi partition, detected as being mounted as /boot/efi, is read-only."
			einfo "Remounting it in read-write mode ..."
			einfo
			mount -o remount,rw /boot/efi
			if [ "$?" -ne 0 ]; then
				eerror
				eerror "Unable to remount in rw mode. Please do it manually!"
				eerror
				die "Can't remount in rw mode. Please do it manually!"
			fi
		else
			einfo
			einfo "Your efi partition was detected as being mounted as /boot/efi."
			einfo "Files will be installed there for ${PN} to function correctly."
			einfo
		fi
	elif [ -n "${fstabstate}" ] && [ -z "${procstate}" ]; then
		mount /boot/efi -o rw
		if [ "$?" -eq 0 ]; then
			einfo
			einfo "Your efi partition was not mounted as /boot/efi, but portage"
			einfo "was able to mount it without additional intervention."
			einfo "Files will be installed there for ${PN} to function correctly."
			einfo
		else
			eerror
			eerror "Cannot automatically mount your /boot/efi partition."
			eerror "Your efi partition has to be mounted rw before the installation"
			eerror "can continue. ${PN} needs to install important files there."
			eerror
			die "Please mount your /boot/efi partition manually!"
		fi
	else
		einfo
		einfo "Assuming you do not have a separate /boot/efi partition."
		einfo
	fi
}

mount-efi_pkg_preinst() {
	mount-boot_pkg_preinst
	mount-efi_mount_efi_partition
}

mount-efi_pkg_prerm() {
	mount-boot_pkg_prerm
	touch "${ROOT}"/boot/efi/.keep 2>/dev/null
	mount-efi_mount_efi_partition
	touch "${ROOT}"/boot/efi/.keep 2>/dev/null
}