125 lines
2.5 KiB
Bash
125 lines
2.5 KiB
Bash
mo() {
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local root="${1}"
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if [ -z "${root}" ]; then
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log_error "No root target directory"
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return 1
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fi
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root="$(realpath "${root}")"
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if ! mkdir "overlay"; then
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log_error "Unable to make overlay directory"
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return 2
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fi
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(
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if ! cd "overlay"; then
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log_error "Unable to move into overlay directory"
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return 3
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fi
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local directory
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for directory in "lower" "upper" "work" "mount"; do
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if ! mkdir --parents "${directory}"; then
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log_error "Unable to make directory: ${directory}"
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return 4
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fi
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done
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local file="${root}/filesystem.squashfs"
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if ! mount "${file}" "lower"; then
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log_error "Unable to lower mount: ${file}"
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return 5
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fi
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if ! mount \
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-o "lowerdir=lower,upperdir=upper,workdir=work" \
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-t "overlay" \
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"overlay" "mount"; then
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log_error "Unable to overlay mount"
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return 6
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fi
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)
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}
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uo() {
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(
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if ! cd "overlay"; then
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log_error "Unable to move into overlay directory"
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return 1
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fi
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if ! umount "mount"; then
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log_error "Unable to unmount mount directory"
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return 2
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fi
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if ! rmdir "mount"; then
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log_error "Unable to remove mount directory"
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return 3
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fi
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local directory
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for directory in "upper" "work"; do
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if ! rm --force --recursive "${directory}"; then
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log_error "Unable to remove directory: ${directory}"
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return 4
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fi
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done
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if ! umount "lower"; then
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log_error "Unable to unmount lower directory"
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return 5
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fi
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if ! rmdir "lower"; then
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log_error "Unable to remove lower directory"
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return 6
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fi
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)
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if ! rmdir "overlay"; then
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log_error "Unable to remove overlay directory"
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return 7
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fi
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}
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mr() {
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local f
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for f in "dev" "dev/pts" "proc" "sys"; do
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mount --bind "/${f}" "overlay/mount/${f}"
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done
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}
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alias cr="\
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chroot \
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\"overlay/mount\" \
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"
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alias cru="\
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chroot \
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--userspec \"1000:1000\" \
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\"overlay/mount\" \
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"
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ur() {
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local f
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for f in "sys" "proc" "dev/pts" "dev"; do
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umount --lazy "overlay/mount/${f}"
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done
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}
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mm() {
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mount --make-rslave --rbind "/deb" "overlay/mount/deb"
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}
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um() {
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umount --recursive "overlay/mount/deb"
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}
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ms() {
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local directory="${1}"
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local file
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local level="${2}"
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if [ -n "${directory}" ]; then
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if mkdir "${directory}"; then
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[ -n "${level}" ] || level="18"
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for file in "vmlinuz" "initrd.img"; do
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cp "overlay/mount/${file}" "${directory}"
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done
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mksquashfs \
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"overlay/mount" "${directory}/filesystem.squashfs" \
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-noappend \
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-comp "zstd" -Xcompression-level "${level}"
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chown --recursive 1000:1000 "${directory}"
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fi
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fi
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}
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