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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: mount-boot-utils.eclass
# @MAINTAINER:
# base-system@gentoo.org
# @SUPPORTED_EAPIS: 7 8
# @BLURB: functions for packages that install files into /boot or the ESP
# @DESCRIPTION:
# This eclass is really only useful for bootloaders and kernel installation.
#
# If the live system has a separate /boot partition or ESP 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 and ESP isn't a separate partition.
#
# This eclass provides the functions used by mount-boot.eclass in an "inherit-
# safe" way. This allows these functions to be used in other eclasses cleanly.
case ${EAPI} in
7|8) ;;
*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
esac
# @FUNCTION: mount-boot_is_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 EROOT is active.
if [[ -n ${EROOT} ]]; 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:
# Check if /boot and ESP is sane, i.e., mounted as read-write if on a separate
# partition. Die if conditions are not fulfilled. If nonfatal is used,
# the function will return a non-zero status instead.
mount-boot_check_status() {
# Get out fast if possible.
mount-boot_is_disabled && return 0
local partition=
local part_is_not_mounted=
local part_is_read_only=
local candidates=( /boot )
# If system is booted with UEFI, check for ESP as well
if [[ -d /sys/firmware/efi ]]; then
# Use same candidates for ESP as installkernel and eclean-kernel
candidates+=( /efi /boot/efi /boot/EFI )
fi
for partition in ${candidates[@]}; do
# note that /dev/BOOT is in the Gentoo default /etc/fstab file
local fstabstate=$(awk "!/^[[:blank:]]*#|^\/dev\/BOOT/ && \$2 == \"${partition}\" \
{ print 1; exit }" /etc/fstab || die "awk failed")
if [[ -z ${fstabstate} ]]; then
einfo "Assuming you do not have a separate ${partition} partition."
else
local procstate=$(awk "\$2 == \"${partition}\" { split(\$4, a, \",\"); \
for (i in a) if (a[i] ~ /^r[ow]\$/) { print a[i]; break }; exit }" \
/proc/mounts || die "awk failed")
if [[ -z ${procstate} ]]; then
eerror "Your ${partition} partition is not mounted"
eerror "Please mount it and retry."
die -n "${partition} not mounted"
part_is_not_mounted=1
else
if [[ ${procstate} == ro ]]; then
eerror "Your ${partition} partition, was detected as being mounted," \
"but is mounted read-only."
eerror "Please remount it as read-write and retry."
die -n "${partition} mounted read-only"
part_is_read_only=1
else
einfo "Your ${partition} partition was detected as being mounted."
einfo "Files will be installed there for ${PN} to function correctly."
fi
fi
fi
done
if [[ -n ${part_is_not_mounted} ]]; then
return 1
elif [[ -n ${part_is_read_only} ]]; then
return 2
else
return 0
fi
}
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