On a Tuesday in 2020, Brian Turek wrote:

Hello All,

I recently ran into problems with the default very restrictive permissions for files that are created via 9pfs host/guest shares (600 for files, 700 for directories). QEMU added two new-ish flags, fmode and dmode, to its 9pfs implementation so that users are able to control these exact permissions.

Would it be possible to expose these two flags via the domain XML?

Yes. If you're looking to implement this yourself, search for 'multidevs' in git log to see a recent example of adding a flag to the 'filesystem' device (note that after providing the input for the test case, you can generate the output by running: VIR_TEST_REGENERATE_OUTPUT=1 tests/qemu${whatever}test (not sure that's documented)). Otherwise, simply wait until someone who needs it or someone who does it based on your gitlab issue implements it.

I made an issue on the libvirt Gitlab ( https://gitlab.com/libvirt/libvirt/-/issues/80) but it appears mailing list posts may be preferred.

Gitlab issues are the preferred way to report feature requests and bugs. Jano

Thank you