reinit the tree, so we can have metadata

1 files changed, 156 insertions, 0 deletions

diff --git a/eclass/mount-boot.eclass b/eclass/mount-boot.eclass
new file mode 100644
index 000000000000..4d886c8d8475
--- /dev/null
+++ b/eclass/mount-boot.eclass
@@ -0,0 +1,156 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# @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
+}