Commits on Dec 15, 2020

1. dist: add sd-plymouth-tpm2-totp mkinitcpio hook …

   mkinitcpio supports two different kinds of initramfs images: one with a busybox
   init (HOOKS=(base udev ...)) and one with a systemd init (HOOKS=(systemd
   sd-...)). Only the former supports the runtime hooks in dist/initcpio/hooks
   that we use to start show-/plymouth-tpm2-totp, the latter relies on system unit
   files to start programs.
   
   This commit adds a new mkinitcpio hook "sd-plymouth-tpm2-totp" to be
   used for systemd-based mkinitcpio initramfs images. It adds a systemd service
   "plymouth-tpm2-totp.service" that triggers plymouth-tpm2-totp once Plymouth has
   been started and /dev/tpm0 is available. While the hook itself is specific to
   mkinitcpio, this service might be useful for other systemd-based initramfs
   generators as well.
   
   Unlike the other currently available hooks, this service currently does not
   allow selecting a different NV index using the kernel command line. As far as I
   am aware, there is no built-in way to supply arguments from the kernel command
   line to systemd units, so the easiest approach might be parsing /proc/cmdline
   directly in plymouth-tpm2-totp. However, this feature is out of scope for this
   commit.
   
   Signed-off-by: Jonas Witschel <diabonas@gmx.de>

   

   diabonas committed Dec 15, 2020
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