Lennart Poettering
ce610af143
I don't see where it would ever be a good thing that file copies done via tmpfiles.d/ C lines cause the tmpfiles operation to fail if their source happens to be missing. It's a problem if we can't set up the destination properly (which is the job of systemd-tmpfiles after all), but if the source is simply missing (NB: setting up the source is the job of of the rules writer) this shouldn't be a problem. This is useful for copying stuff into place if it happens to exist. For example, if systemd-stub passes additional data into the initrd's /.extra/ directory, we can copy it into a better place (e.g. /run/) with this, where it will survive the initrd→host transition. This mirrors behaviour of the recently added "^" line modifier which may be used source "w" lines from credentials – there two the behaviour is to simply skip the line if the source is missing.
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