User: helm...@debian.org Usertags: dep17p6 Control: retitle -1 empty directory /lib/rc/tmp may be lost during canonicalization
On Thu, Aug 31, 2023 at 04:04:28PM +0700, Timothy Kenno Handojo wrote: > I've began conducting my investigation on the temporary files within /lib > directory. The issue is not with temporary files, but with empty directories below lib. openrc has exactly one and that is /lib/rc/tmp. https://subdivi.de/~helmut/dep17.html explains the underlying problem in section P6. > Looking thru the source code itself, there's no mention of this directory > except for where it was defined & validated. > > There is a github issue discussing this: > https://github.com/OpenRC/openrc/issues/339 That issue seems to be about whether the directory should be writeable. A directory may be used for other purposes. I've seen e.g. a use where an empty directory is being used as a temporary mount point during boot before calling pivot_root. That also seems plausible in this case. Absence could render openrc unbootable. > It appears to have been stale for a while. I am inciting further discussion > in hope we can move further. Yes, please. We need a good understanding for why this directory exists. Maybe you can also try it empirically? Create a VM using openrc, delete the directory and see what breaks. In particular, does it still boot? If we figure that nothing breaks, removing /lib/rc/tmp from the package by far is the simplest solution here. If there is a need, there are other mitigations available. Helmut
