| # Copyright 1999-2015 Gentoo Foundation |
| # Distributed under the terms of the GNU General Public License v2 |
| # $Id$ |
| |
| # @ECLASS: mount-boot.eclass |
| # @MAINTAINER: |
| # base-system@gentoo.org |
| # @BLURB: functions for packages that install files into /boot |
| # @DESCRIPTION: |
| # This eclass is really only useful for bootloaders. |
| # |
| # If the live system has a separate /boot partition configured, then this |
| # function tries to ensure that it's mounted in rw mode, exiting with an |
| # error if it can't. It does nothing if /boot isn't a separate partition. |
| |
| EXPORT_FUNCTIONS pkg_pretend pkg_preinst pkg_postinst pkg_prerm pkg_postrm |
| |
| # @FUNCTION: mount-boot_disabled |
| # @INTERNAL |
| # @DESCRIPTION: |
| # Detect whether the current environment/build settings are such that we do not |
| # want to mess with any mounts. |
| mount-boot_is_disabled() { |
| # Since this eclass only deals with /boot, skip things when ROOT is active. |
| if [[ "${ROOT:-/}" != "/" ]] ; then |
| return 0 |
| fi |
| |
| # If we're only building a package, then there's no need to check things. |
| if [[ "${MERGE_TYPE}" == "buildonly" ]] ; then |
| return 0 |
| fi |
| |
| # The user wants us to leave things be. |
| if [[ -n ${DONT_MOUNT_BOOT} ]] ; then |
| return 0 |
| fi |
| |
| # OK, we want to handle things ourselves. |
| return 1 |
| } |
| |
| # @FUNCTION: mount-boot_check_status |
| # @INTERNAL |
| # @DESCRIPTION: |
| # Figure out what kind of work we need to do in order to have /boot be sane. |
| # Return values are: |
| # 0 - Do nothing at all! |
| # 1 - It's mounted, but is currently ro, so need to remount rw. |
| # 2 - It's not mounted, so need to mount it rw. |
| mount-boot_check_status() { |
| # Get out fast if possible. |
| mount-boot_is_disabled && return 0 |
| |
| # note that /dev/BOOT is in the Gentoo default /etc/fstab file |
| local fstabstate=$(awk '!/^#|^[[:blank:]]+#|^\/dev\/BOOT/ {print $2}' /etc/fstab | egrep "^/boot$" ) |
| local procstate=$(awk '$2 ~ /^\/boot$/ {print $2}' /proc/mounts) |
| local proc_ro=$(awk '{ print $2 " ," $4 "," }' /proc/mounts | sed -n '/\/boot .*,ro,/p') |
| |
| if [ -n "${fstabstate}" ] && [ -n "${procstate}" ] ; then |
| if [ -n "${proc_ro}" ] ; then |
| echo |
| einfo "Your boot partition, detected as being mounted at /boot, is read-only." |
| einfo "It will be remounted in read-write mode temporarily." |
| return 1 |
| else |
| echo |
| einfo "Your boot partition was detected as being mounted at /boot." |
| einfo "Files will be installed there for ${PN} to function correctly." |
| return 0 |
| fi |
| elif [ -n "${fstabstate}" ] && [ -z "${procstate}" ] ; then |
| echo |
| einfo "Your boot partition was not mounted at /boot, so it will be automounted for you." |
| einfo "Files will be installed there for ${PN} to function correctly." |
| return 2 |
| else |
| echo |
| einfo "Assuming you do not have a separate /boot partition." |
| return 0 |
| fi |
| } |
| |
| mount-boot_pkg_pretend() { |
| # Get out fast if possible. |
| mount-boot_is_disabled && return 0 |
| |
| elog "To avoid automounting and auto(un)installing with /boot," |
| elog "just export the DONT_MOUNT_BOOT variable." |
| mount-boot_check_status |
| } |
| |
| mount-boot_mount_boot_partition() { |
| mount-boot_check_status |
| case $? in |
| 0) # Nothing to do. |
| ;; |
| 1) # Remount it rw. |
| mount -o remount,rw /boot |
| if [ $? -ne 0 ] ; then |
| echo |
| eerror "Unable to remount in rw mode. Please do it manually!" |
| die "Can't remount in rw mode. Please do it manually!" |
| fi |
| touch /boot/.e.remount |
| ;; |
| 2) # Mount it rw. |
| mount /boot -o rw |
| if [ $? -ne 0 ] ; then |
| echo |
| eerror "Cannot automatically mount your /boot partition." |
| eerror "Your boot partition has to be mounted rw before the installation" |
| eerror "can continue. ${PN} needs to install important files there." |
| die "Please mount your /boot partition manually!" |
| fi |
| touch /boot/.e.mount |
| ;; |
| esac |
| } |
| |
| mount-boot_pkg_preinst() { |
| # Handle older EAPIs. |
| case ${EAPI:-0} in |
| [0-3]) mount-boot_pkg_pretend ;; |
| esac |
| |
| mount-boot_mount_boot_partition |
| } |
| |
| mount-boot_pkg_prerm() { |
| touch "${ROOT}"/boot/.keep 2>/dev/null |
| mount-boot_mount_boot_partition |
| touch "${ROOT}"/boot/.keep 2>/dev/null |
| } |
| |
| mount-boot_umount_boot_partition() { |
| # Get out fast if possible. |
| mount-boot_is_disabled && return 0 |
| |
| if [ -e /boot/.e.remount ] ; then |
| einfo "Automatically remounting /boot as ro as it was previously." |
| rm -f /boot/.e.remount |
| mount -o remount,ro /boot |
| elif [ -e /boot/.e.mount ] ; then |
| einfo "Automatically unmounting /boot as it was previously." |
| rm -f /boot/.e.mount |
| umount /boot |
| fi |
| } |
| |
| mount-boot_pkg_postinst() { |
| mount-boot_umount_boot_partition |
| } |
| |
| mount-boot_pkg_postrm() { |
| mount-boot_umount_boot_partition |
| } |