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And introduce a new variable DONT_MOUNT_ESP to disable only the mount checking of the EFI System Partition. Useful for ebuilds where we know that only /boot is touched and not /efi. Or for users that know their kernel installation layout does not require mounting the ESP. Bug: https://bugs.gentoo.org/937785 Bug: https://bugs.gentoo.org/939760 Signed-off-by: Nowa Ammerlaan <nowa@gentoo.org> Signed-off-by: Michał Górny <mgorny@gentoo.org>
121 lines
3.8 KiB
Bash
121 lines
3.8 KiB
Bash
# Copyright 1999-2025 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: mount-boot-utils.eclass
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# @MAINTAINER:
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# base-system@gentoo.org
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# @SUPPORTED_EAPIS: 7 8
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# @BLURB: functions for packages that install files into /boot or the ESP
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# @DESCRIPTION:
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# This eclass is really only useful for bootloaders and kernel installation.
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#
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# If the live system has a separate /boot partition or ESP configured, then this
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# function tries to ensure that it's mounted in rw mode, exiting with an error
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# if it can't. It does nothing if /boot and ESP isn't a separate partition.
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#
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# This eclass provides the functions used by mount-boot.eclass in an "inherit-
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# safe" way. This allows these functions to be used in other eclasses cleanly.
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# @ECLASS_VARIABLE: DONT_MOUNT_BOOT
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# @USER_VARIABLE
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# @DESCRIPTION:
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# May be set by the user or an ebuild to completely disable mount checking
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# of the /boot partition and the EFI System Partition.
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# @ECLASS_VARIABLE: DONT_MOUNT_ESP
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# @USER_VARIABLE
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# @DESCRIPTION:
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# May be set by the user or an ebuild to disable mount checking of the
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# EFI System Partition only.
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case ${EAPI} in
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7|8) ;;
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*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
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esac
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# @FUNCTION: mount-boot_is_disabled
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# @INTERNAL
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# @DESCRIPTION:
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# Detect whether the current environment/build settings are such that we do not
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# want to mess with any mounts.
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mount-boot_is_disabled() {
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# Since this eclass only deals with /boot, skip things when EROOT is active.
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if [[ -n ${EROOT} ]]; then
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return 0
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fi
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# If we're only building a package, then there's no need to check things.
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if [[ ${MERGE_TYPE} == buildonly ]]; then
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return 0
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fi
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# The user wants us to leave things be.
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if [[ -n ${DONT_MOUNT_BOOT} ]]; then
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return 0
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fi
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# OK, we want to handle things ourselves.
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return 1
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}
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# @FUNCTION: mount-boot_check_status
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# @INTERNAL
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# @DESCRIPTION:
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# Check if /boot and ESP is sane, i.e., mounted as read-write if on a separate
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# partition. Die if conditions are not fulfilled. If nonfatal is used,
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# the function will return a non-zero status instead.
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mount-boot_check_status() {
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# Get out fast if possible.
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mount-boot_is_disabled && return 0
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local partition=
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local part_is_not_mounted=
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local part_is_read_only=
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local candidates=( /boot )
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# If system is booted with UEFI, check for ESP as well
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if [[ -d /sys/firmware/efi && -z ${DONT_MOUNT_ESP} ]]; then
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# Use same candidates for ESP as installkernel and eclean-kernel
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candidates+=( /efi /boot/efi /boot/EFI )
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fi
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for partition in ${candidates[@]}; do
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# note that /dev/BOOT is in the Gentoo default /etc/fstab file
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local fstabstate=$(awk "!/^[[:blank:]]*#|^\/dev\/BOOT/ && \$2 == \"${partition}\" \
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{ print 1; exit }" /etc/fstab || die "awk failed")
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if [[ -z ${fstabstate} ]]; then
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einfo "Assuming you do not have a separate ${partition} partition."
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else
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local procstate=$(awk "\$2 == \"${partition}\" { split(\$4, a, \",\"); \
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for (i in a) if (a[i] ~ /^r[ow]\$/) { print a[i]; break }; exit }" \
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/proc/mounts || die "awk failed")
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if [[ -z ${procstate} ]]; then
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eerror "Your ${partition} partition is not mounted"
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eerror "Please mount it and retry."
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die -n "${partition} not mounted"
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part_is_not_mounted=1
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else
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if [[ ${procstate} == ro ]]; then
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eerror "Your ${partition} partition, was detected as being mounted," \
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"but is mounted read-only."
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eerror "Please remount it as read-write and retry."
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die -n "${partition} mounted read-only"
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part_is_read_only=1
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else
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einfo "Your ${partition} partition was detected as being mounted."
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einfo "Files will be installed there for ${PN} to function correctly."
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fi
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fi
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fi
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done
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if [[ -n ${part_is_not_mounted} ]]; then
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return 1
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elif [[ -n ${part_is_read_only} ]]; then
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return 2
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else
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return 0
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fi
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}
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