82 lines
1.5 KiB
Bash
82 lines
1.5 KiB
Bash
function mo {
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local directory="${1}"
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local file
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if [ "${directory}" ] ; then
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directory="$(realpath "${directory}")"
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file="${directory}/filesystem.squashfs"
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if mkdir 'overlay' ; then
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cd 'overlay'
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mkdir {lower,upper,work,mount}
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if mount "${file}" 'lower' ; then
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mount -t 'overlay' 'overlay' 'mount' \
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-o lowerdir='lower',upperdir='upper',workdir='work'
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fi
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cd ..
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fi
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else
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echo 'KO: directory?'
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fi
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}
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function uo {
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cd 'overlay'
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if umount 'mount' ; then
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rmdir 'mount'
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rm --recursive 'upper' 'work'
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if umount 'lower' ; then
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rmdir 'lower'
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fi
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fi
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cd ..
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rmdir 'overlay'
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}
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function mr {
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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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function ur {
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for f in 'sys' 'proc' 'dev/pts' 'dev' ; do
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umount --lazy "overlay/mount/${f}"
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done
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}
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function mm {
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mount --make-rslave --rbind '/deb' 'overlay/mount/deb'
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}
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function um {
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umount --recursive 'overlay/mount/deb'
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}
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function ms {
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local directory="${1}"
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local level="${2}"
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if [ "${directory}" ] ; then
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if mkdir "${directory}" ; then
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[ "${level}" ] || level='18'
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cp overlay/mount/{vmlinuz,initrd.img} "${directory}"
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mksquashfs \
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'overlay/mount' "${directory}/filesystem.squashfs" \
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-b '1M' \
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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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