20 lines
852 B
SYSTEMD
20 lines
852 B
SYSTEMD
[Unit]
|
|
Description=Variable storage overlay setup
|
|
ConditionPathIsSymbolicLink=!/var
|
|
DefaultDependencies=no
|
|
RequiresMountsFor=/run/buildroot/mounts/var
|
|
|
|
[Service]
|
|
Type=oneshot
|
|
RemainAfterExit=yes
|
|
ExecStart=/usr/bin/mkdir -p /run/buildroot/mounts/var/lower /run/buildroot/mounts/var/upper /run/buildroot/mounts/var/work
|
|
|
|
# Ideally, we would like to use a systemd mount unit to manage the bind
|
|
# mount. Unfortunately, that creates a circular dependency: such a unit
|
|
# would have What=/var while var.mount has Where=/var so that introduces
|
|
# an implicit dependency from that unit to var.mount, but var.mount
|
|
# would have an explicit dependency to be ordered after that unit.
|
|
# So we handle the bind mount manually.
|
|
ExecStart=/usr/bin/mount -n -o bind,private /var /run/buildroot/mounts/var/lower
|
|
ExecStop=/usr/bin/umount -l /run/buildroot/mounts/var/lower
|