Adding depedency resolution to libraries added via install_items

[guyru]

Hi,

install_items can be used to add both libraries and executable to the initramfs image. While setting up unlocking for a LUKS encrypted root using a FIDO2 token, I encountered the following scenario: systemd-cryptsetup needs libfido2.so for FIDO2 support, but as it dlopens it, the dependency isn't automatically included in the initramfs. My initial solution was to add libfido2.so via install_items, but that doesn't automatically add dependencies. The final workaround was to add an executable that is dynamically linked to libfido2.so, which through the dependency resolution also add libfido2.so itself and its dependencies. However, this is ugly.

The best solution would be for install_items to also add library dependencies when adding a .so file (like it does for executables). I would like to add that functionality. Which place in dracut code should I be looking at for modifying install_items?

Thanks!