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;;; Consfigurator -- Lisp declarative configuration management system
;;; Copyright (C) 2021 Sean Whitton <spwhitton@spwhitton.name>
;;; This file is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3, or (at your option)
;;; any later version.
;;; This file is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
(in-package :consfigurator.property.installer)
(named-readtables:in-readtable :consfigurator)
;;;; Bootloaders
(defgeneric install-bootloader (bootloader-type volume running-on-target &key)
(:documentation "Install bootloader of type BOOTLOADER-TYPE to VOLUME.
RUNNING-ON-TARGET indicates whether the host to which we are connected is the
host the bootloader will boot. For example, it is NIL when building disk
images, and T when installing a host from a live environment. Bootloader
installation might behave differently when RUNNING-ON-TARGET is NIL, or error
out.
Only :LISP property :APPLY subroutines will call this function."))
(defgeneric install-bootloader-binaries (bootloader-type volume &key)
(:documentation
"Return a :POSIX propapp which fetches/installs whatever binaries/packages
need to be available to install BOOTLOADER-TYPE to VOLUME."))
;;;; Properties
(defprop %update-target-from-chroot :posix (chroot target)
(:desc #?"Updated ${target} from ${chroot}")
(:apply
(assert-euid-root)
(run "rsync" "-PSavx" "--delete"
(loop for volume
in (mapcan (curry #'subvolumes-of-type 'mounted-filesystem)
(get-connattr :opened-volumes))
collect (strcat "--exclude="
(unix-namestring (mount-point volume))))
(strcat (unix-namestring chroot) "/")
(strcat (unix-namestring target) "/"))))
(defprop %install-bootloaders :lisp (running-on-target)
(:desc #?"Installed host bootloaders")
(:apply
(assert-euid-root)
(dolist (volume (mapcan #'all-subvolumes (get-connattr :opened-volumes)))
(when (slot-boundp volume 'volume-bootloader)
(destructuring-bind (type . args) (volume-bootloader volume)
(apply #'install-bootloader type volume running-on-target args))))))
(defpropspec chroot-installed-to-volumes :lisp
(host chroot volumes &key running-on-target)
"Where CHROOT contains the root filesystem of HOST and VOLUMES is a list of
volumes, recursively open the volumes and rsync in the contents of CHROOT.
Also update the fstab and crypttab, and try to install bootloader(s)."
(:desc #?"${chroot} installed to volumes")
(let ((target
(ensure-directory-pathname
(strcat
(drop-trailing-slash
(unix-namestring (ensure-directory-pathname chroot)))
".target"))))
`(with-these-open-volumes (,volumes :mount-below ,target)
(%update-target-from-chroot ,chroot ,target)
,(propapp
(chroot:deploys-these. target host
(os:etypecase
(debianlike
(file:lacks-lines "/etc/fstab"
"# UNCONFIGURED FSTAB FOR BASE SYSTEM")
;; These will overwrite any custom mount options, etc., with
;; values from VOLUMES. Possibly it would be better to use
;; properties which only update the fs-spec/source fields.
;; However, given that VOLUMES ultimately comes from the
;; volumes the user has declared for the host, it is unlikely
;; there are other properties setting mount options etc. which
;; are in conflict with VOLUMES.
(fstab:entries-for-opened-volumes)
(crypttab:entries-for-opened-volumes)))
(%install-bootloaders running-on-target))))))
(defpropspec bootloader-binaries-installed :posix ()
"Install whatever binaries/packages need to be available to install the host's
bootloaders to its volumes from within that host."
(:desc #?"Bootloader binaries installed")
(loop
for volume in (mapcan #'all-subvolumes (get-hostattrs :volumes))
when (slot-boundp volume 'volume-bootloader)
collect (destructuring-bind (type . args) (volume-bootloader volume)
(apply #'install-bootloader-binaries type volume args))
into propapps
finally
(setq propapps (delete-duplicates propapps :test #'tree-equal))
(return (if (cdr propapps) (cons 'eseqprops propapps) (car propapps)))))
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