Bug#792187: systemd: systemctl start not working when ReadWriteDirectories is a symlink

[nfb]

> Hm, if the Chromium kernel/LSM forbids this, I don't see how this can be
> fixed in systemd? Do you?

Obviously the answer is no... i reported here since the commands in
the service file were working fine when executed by hand, so i thought
it couldn't be a kernel issue, but how systemd handled this kernel
restricion. Maybe could systemd handle such an issue transparently?
Thanks.