Date: Fri, 7 Mar 2025 21:40:27 +0100
From: Edgar =?iso-8859-1?B?RnXf?= <e...@math.uni-bonn.de>
Message-ID: <20250307204026.gl2...@trav.math.uni-bonn.de>
| I could mount 1. on /var/chroot/tftpd/RO, put a symlink RW->../RW in there
| and start tftpd with RO as an argument, but I'm unsure whether tftpd wil
| follow the symlink.
tftpd isn't that smart a program, it would never notice a symlink,
it does some stat() calls (no lstat()) and the options it uses with
open() (for reading/writing/creating) are entirely mundane. There's
no reason it would even notice that RW is a symlink rather than just
being a directory.
| I could use a null mount instead of the symlink, but then I'd run into the
| same problem as now
Possibly, I was kind of hoping that umounting the overlay would not
need to touch the underlying filesystem at all, there's no reason
it should need to (particularly if given -f).
| Better ideas?
None.
kre
