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bc0e131747
The /dev/mapper directory created by devtmpfs lacked entry for armbian-root thereby breaking the cryptsetup configuration generated within initrd file. Use bind mount as that doesn't seem to suffer from that issue.
95 lines
4.1 KiB
Bash
95 lines
4.1 KiB
Bash
#!/usr/bin/env bash
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#
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# SPDX-License-Identifier: GPL-2.0
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#
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# Copyright (c) 2013-2023 Igor Pecovnik, igor@armbian.com
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#
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# This file is a part of the Armbian Build Framework
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# https://github.com/armbian/build/
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# mount_chroot <target>
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function mount_chroot() {
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if [[ "x${LOG_SECTION}x" == "xx" ]]; then
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display_alert "mount_chroot called outside of logging section..." "mount_chroot '$1'\n$(stack_color="${magenta_color:-}" show_caller_full)" "warn"
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fi
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local target
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target="$(realpath "$1")" # normalize, remove last slash if dir
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display_alert "mount_chroot" "$target" "debug"
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mkdir -p "${target}/run/user/0"
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# tmpfs size=50% is the Linux default, but we need more.
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mount -t tmpfs -o "size=99%" tmpfs "${target}/tmp"
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mount -t tmpfs -o "size=99%" tmpfs "${target}/var/tmp"
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mount -t tmpfs -o "size=99%" tmpfs "${target}/run/user/0"
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mount -t proc chproc "${target}"/proc
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mount -t sysfs chsys "${target}"/sys
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mount --bind /dev "${target}"/dev
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mount -t devpts chpts "${target}"/dev/pts || mount --bind /dev/pts "${target}"/dev/pts
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}
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# umount_chroot <target>
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function umount_chroot() {
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if [[ "x${LOG_SECTION}x" == "xx" ]]; then
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display_alert "umount_chroot called outside of logging section..." "umount_chroot '$1'\n$(stack_color="${magenta_color:-}" show_caller_full)" "warn"
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fi
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local target
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target="$(realpath "$1")" # normalize, remove last slash if dir
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display_alert "Unmounting" "$target" "info"
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while grep -Eq "${target}\/(dev|proc|sys|tmp|var\/tmp|run\/user\/0)" /proc/mounts; do
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display_alert "Unmounting..." "target: ${target}" "debug"
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umount "${target}"/dev/pts || true
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umount --recursive "${target}"/dev || true
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umount "${target}"/proc || true
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umount "${target}"/sys || true
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umount "${target}"/tmp || true
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umount "${target}"/var/tmp || true
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umount "${target}"/run/user/0 || true
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wait_for_disk_sync "after umount chroot"
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run_host_command_logged grep -E "'${target}/(dev|proc|sys|tmp)'" /proc/mounts "||" true
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done
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run_host_command_logged rm -rf "${target}"/run/user/0
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}
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# demented recursive version, for final umount. call: umount_chroot_recursive /some/dir "DESCRIPTION"
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function umount_chroot_recursive() {
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if [[ ! -d "${1}" ]]; then # only even try if target is a directory
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return 0
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fi
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local target description="${2:-"UNKNOWN"}"
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target="$(realpath "$1")/" # normalize, make sure to have slash as last element
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if [[ ! -d "${target}" ]]; then # only even try if target is a directory
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return 0 # success, nothing to do.
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elif [[ "${target}" == "/" ]]; then # make sure we're not trying to umount root itself.
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return 0
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fi
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display_alert "Unmounting recursively" "${description} - be patient" ""
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wait_for_disk_sync "before recursive umount ${description}" # sync. coalesce I/O. wait for writes to flush to disk. it might take a second.
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# First, try to umount some well-known dirs, in a certain order. for speed.
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local -a well_known_list=("dev/pts" "dev" "proc" "sys" "boot/efi" "boot/firmware" "boot" "tmp" ".")
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for well_known in "${well_known_list[@]}"; do
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umount --recursive "${target}${well_known}" &> /dev/null || true # ignore errors
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done
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# now try in a loop to unmount all that's still mounted under the target
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local -i tries=1 # the first try above
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mapfile -t current_mount_list < <(cut -d " " -f 2 "/proc/mounts" | grep "^${target}" || true) # don't let grep error out.
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while [[ ${#current_mount_list[@]} -gt 0 ]]; do
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if [[ $tries -gt 10 ]]; then
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display_alert "${#current_mount_list[@]} dirs still mounted after ${tries} tries:" "${current_mount_list[*]}" "wrn"
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fi
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cut -d " " -f 2 "/proc/mounts" | grep "^${target}" | xargs -n1 umount --recursive &> /dev/null || true # ignore errors
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wait_for_disk_sync "during recursive umount ${description}" # sync. coalesce I/O. wait for writes to flush to disk. it might take a second.
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mapfile -t current_mount_list < <(cut -d " " -f 2 "/proc/mounts" | grep "^${target}")
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tries=$((tries + 1))
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done
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# if more than one try..
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if [[ $tries -gt 1 ]]; then
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display_alert "Unmounted OK after ${tries} attempt(s)" "${description}" "info"
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fi
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return 0
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}
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