113 lines
3.1 KiB
Bash
113 lines
3.1 KiB
Bash
# Copyright 1999-2023 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: mount-boot.eclass
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# @MAINTAINER:
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# base-system@gentoo.org
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# @SUPPORTED_EAPIS: 6 7 8
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# @BLURB: functions for packages that install files into /boot
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# @DESCRIPTION:
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# This eclass is really only useful for bootloaders.
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#
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# If the live system has a separate /boot partition configured, then this
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# function tries to ensure that it's mounted in rw mode, exiting with an
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# error if it can't. It does nothing if /boot isn't a separate partition.
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case ${EAPI} in
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6|7|8) ;;
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*) die "${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 [[ ${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 ${DONT_MOUNT_BOOT} ]] ; then
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return 0
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fi
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# OK, we want to handle things ourselves.
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return 1
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}
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# @FUNCTION: mount-boot_check_status
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# @INTERNAL
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# @DESCRIPTION:
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# Check if /boot is sane, i.e., mounted as read-write if on a separate
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# partition. Die if conditions are not fulfilled. If nonfatal is used,
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# the function will return a non-zero status instead.
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mount-boot_check_status() {
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# Get out fast if possible.
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mount-boot_is_disabled && return 0
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# note that /dev/BOOT is in the Gentoo default /etc/fstab file
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local fstabstate=$(awk '!/^[[:blank:]]*#|^\/dev\/BOOT/ && $2 == "/boot" \
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{ print 1; exit }' /etc/fstab || die "awk failed")
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if [[ -z ${fstabstate} ]] ; then
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einfo "Assuming you do not have a separate /boot partition."
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return 0
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fi
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local procstate=$(awk '$2 == "/boot" { 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 boot partition is not mounted at /boot."
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eerror "Please mount it and retry."
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die -n "/boot not mounted"
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return 1
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fi
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if [[ ${procstate} == ro ]] ; then
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eerror "Your boot partition, detected as being mounted at /boot," \
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"is read-only."
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eerror "Please remount it as read-write and retry."
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die -n "/boot mounted read-only"
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return 2
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fi
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einfo "Your boot partition was detected as being mounted at /boot."
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einfo "Files will be installed there for ${PN} to function correctly."
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return 0
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}
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mount-boot_pkg_pretend() {
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mount-boot_check_status
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}
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mount-boot_pkg_preinst() {
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mount-boot_check_status
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}
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mount-boot_pkg_prerm() {
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mount-boot_check_status
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if [[ -z ${EPREFIX} ]] \
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&& ! ( shopt -s failglob; : "${EROOT}"/boot/.keep* ) 2>/dev/null
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then
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# Create a .keep file, in case it is shadowed at the mount point
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touch "${EROOT}"/boot/.keep 2>/dev/null
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fi
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}
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# No-op phases for backwards compatibility
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mount-boot_pkg_postinst() { :; }
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mount-boot_pkg_postrm() { :; }
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EXPORT_FUNCTIONS pkg_pretend pkg_preinst pkg_postinst pkg_prerm pkg_postrm
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