This adds a bit of generic helper tools for installing files/dir trees. "installing" is supposed to mean the final step when preparing a disk image or directory tree, where the result is renamed to its final name. It has some bells and whistles, as it is able to replace existing files sanely, can fsync() things carefully and can mark things read-only in a nice way. This is supposed to be generic, unified code that can be used eventually for any of our tools that prepare disk images/directory trees, including importd, nspawn's --template= mechanism, the discover-image.c logic, and more.
System and Service Manager
Details
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