On Fri 26 Jan 2024 at 16:13:26 (+0100), Nicolas George wrote: > Hi. > > Yet another strange question. Is there a supported¹ way to have > cryptsetup play a specific sound when it asks the password for the root > partition from the initrd? > > I think brttty (braille) is already running at this point (no occasion > to test yet), but a recognizable sound would be something nice to > propose I think.
It looks as if the root directory is decrypted by /usr/share/initramfs-tools/scripts/local-top/cryptroot and, from its prereqs, that this script makes sure it is the last to run from scripts/local-top, by actually being run from scripts/local-block/cryptroot. (Correct me if I'm wrong: I'm a tyro in here.) I notice that there is a slew of empty directories in /etc/initramfs-tools/scripts/, and I can only assume that anything you drop into these gets merged with those in /usr/share/initramfs-tools/scripts/ when the initramfs is built. There is no scripts/local-block/ directory under /etc/, possibly because it's not intended that you interfere with the "ordering trick" mentioned above. So I would try dropping a logging/printing script into /etc/initramfs-tools/scripts/local-top/ in order to see whether it runs, and at the right time. The script could also look and see what support is already available for making noises. Cheers, David.
