sh/shell/mount.sh
2024-11-15 16:27:41 +01:00

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mo() {
local directory="${1}"
local file
if [ -n "${directory}" ]; then
directory="$(realpath "${directory}")"
file="${directory}/filesystem.squashfs"
if mkdir "overlay"; then
cd "overlay"
mkdir {lower,upper,work,mount}
if mount "${file}" "lower"; then
mount \
-o lowerdir="lower",upperdir="upper",workdir="work" \
-t "overlay" \
"overlay" "mount"
fi
cd ..
fi
else
echo "KO: directory?"
fi
}
uo() {
cd "overlay"
if umount "mount"; then
rmdir "mount"
rm --recursive "upper" "work"
if umount "lower"; then
rmdir "lower"
fi
fi
cd ..
rmdir "overlay"
}
mr() {
local f
for f in "dev" "dev/pts" "proc" "sys"; do
mount --bind "/${f}" "overlay/mount/${f}"
done
}
alias cr="\
chroot \
\"overlay/mount\" \
"
alias cru="\
chroot \
--userspec \"1000:1000\" \
\"overlay/mount\" \
"
ur() {
local f
for f in "sys" "proc" "dev/pts" "dev"; do
umount --lazy "overlay/mount/${f}"
done
}
mm() {
mount --make-rslave --rbind "/deb" "overlay/mount/deb"
}
um() {
umount --recursive "overlay/mount/deb"
}
ms() {
local directory="${1}"
local level="${2}"
if [ -n "${directory}" ]; then
if mkdir "${directory}"; then
[ -n "${level}" ] || level="18"
cp overlay/mount/{vmlinuz,initrd.img} "${directory}"
mksquashfs \
"overlay/mount" "${directory}/filesystem.squashfs" \
-noappend \
-comp "zstd" -Xcompression-level "${level}"
chown --recursive 1000:1000 "${directory}"
fi
fi
}