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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 David Craven <david@craven.ch>
;;; Copyright © 2017, 2020 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu bootloader)
#:use-module (guix discovery)
#:use-module (guix gexp)
#:use-module (guix profiles)
#:use-module (guix records)
#:use-module (guix ui)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:export (menu-entry
menu-entry?
menu-entry-label
menu-entry-device
menu-entry-linux
menu-entry-linux-arguments
menu-entry-initrd
menu-entry-device-mount-point
menu-entry-multiboot-kernel
menu-entry-multiboot-arguments
menu-entry-multiboot-modules
menu-entry->sexp
sexp->menu-entry
bootloader
bootloader?
bootloader-name
bootloader-package
bootloader-installer
bootloader-disk-image-installer
bootloader-configuration-file
bootloader-configuration-file-generator
bootloader-configuration
bootloader-configuration?
bootloader-configuration-bootloader
bootloader-configuration-target
bootloader-configuration-menu-entries
bootloader-configuration-default-entry
bootloader-configuration-timeout
bootloader-configuration-keyboard-layout
bootloader-configuration-theme
bootloader-configuration-terminal-outputs
bootloader-configuration-terminal-inputs
bootloader-configuration-serial-unit
bootloader-configuration-serial-speed
bootloader-configuration-additional-configuration
%bootloaders
lookup-bootloader-by-name
efi-bootloader-chain))
;;;
;;; Menu-entry record.
;;;
(define-record-type* <menu-entry>
menu-entry make-menu-entry
menu-entry?
(label menu-entry-label)
(device menu-entry-device ; file system uuid, label, or #f
(default #f))
(device-mount-point menu-entry-device-mount-point
(default #f))
(linux menu-entry-linux
(default #f))
(linux-arguments menu-entry-linux-arguments
(default '())) ; list of string-valued gexps
(initrd menu-entry-initrd ; file name of the initrd as a gexp
(default #f))
(multiboot-kernel menu-entry-multiboot-kernel
(default #f))
(multiboot-arguments menu-entry-multiboot-arguments
(default '())) ; list of string-valued gexps
(multiboot-modules menu-entry-multiboot-modules
(default '()))) ; list of multiboot commands, where
; a command is a list of <string>
(define (menu-entry->sexp entry)
"Return ENTRY serialized as an sexp."
(match entry
(($ <menu-entry> label device mount-point linux linux-arguments initrd #f
())
`(menu-entry (version 0)
(label ,label)
(device ,device)
(device-mount-point ,mount-point)
(linux ,linux)
(linux-arguments ,linux-arguments)
(initrd ,initrd)))
(($ <menu-entry> label device mount-point #f () #f
multiboot-kernel multiboot-arguments multiboot-modules)
`(menu-entry (version 0)
(label ,label)
(device ,device)
(device-mount-point ,mount-point)
(multiboot-kernel ,multiboot-kernel)
(multiboot-arguments ,multiboot-arguments)
(multiboot-modules ,multiboot-modules)))))
(define (sexp->menu-entry sexp)
"Turn SEXP, an sexp as returned by 'menu-entry->sexp', into a <menu-entry>
record."
(match sexp
(('menu-entry ('version 0)
('label label) ('device device)
('device-mount-point mount-point)
('linux linux) ('linux-arguments linux-arguments)
('initrd initrd) _ ...)
(menu-entry
(label label)
(device device)
(device-mount-point mount-point)
(linux linux)
(linux-arguments linux-arguments)
(initrd initrd)))
(('menu-entry ('version 0)
('label label) ('device device)
('device-mount-point mount-point)
('multiboot-kernel multiboot-kernel)
('multiboot-arguments multiboot-arguments)
('multiboot-modules multiboot-modules) _ ...)
(menu-entry
(label label)
(device device)
(device-mount-point mount-point)
(multiboot-kernel multiboot-kernel)
(multiboot-arguments multiboot-arguments)
(multiboot-modules multiboot-modules)))))
;;;
;;; Bootloader record.
;;;
;; The <bootloader> record contains fields expressing how the bootloader
;; should be installed. Every bootloader in gnu/bootloader/ directory
;; has to be described by this record.
(define-record-type* <bootloader>
bootloader make-bootloader
bootloader?
(name bootloader-name)
(package bootloader-package)
(installer bootloader-installer)
(disk-image-installer bootloader-disk-image-installer
(default #f))
(configuration-file bootloader-configuration-file)
(configuration-file-generator bootloader-configuration-file-generator))
;;;
;;; Bootloader configuration record.
;;;
;; The <bootloader-configuration> record contains bootloader independant
;; configuration used to fill bootloader configuration file.
(define-record-type* <bootloader-configuration>
bootloader-configuration make-bootloader-configuration
bootloader-configuration?
(bootloader bootloader-configuration-bootloader) ;<bootloader>
(target bootloader-configuration-target ;string
(default #f))
(menu-entries bootloader-configuration-menu-entries ;list of <menu-entry>
(default '()))
(default-entry bootloader-configuration-default-entry ;integer
(default 0))
(timeout bootloader-configuration-timeout ;seconds as integer
(default 5))
(keyboard-layout bootloader-configuration-keyboard-layout ;<keyboard-layout> | #f
(default #f))
(theme bootloader-configuration-theme ;bootloader-specific theme
(default #f))
(terminal-outputs bootloader-configuration-terminal-outputs ;list of symbols
(default '(gfxterm)))
(terminal-inputs bootloader-configuration-terminal-inputs ;list of symbols
(default '()))
(serial-unit bootloader-configuration-serial-unit ;integer | #f
(default #f))
(serial-speed bootloader-configuration-serial-speed ;integer | #f
(default #f)))
;;;
;;; Bootloaders.
;;;
(define (bootloader-modules)
"Return the list of bootloader modules."
(all-modules (map (lambda (entry)
`(,entry . "gnu/bootloader"))
%load-path)
#:warn warn-about-load-error))
(define %bootloaders
;; The list of publically-known bootloaders.
(delay (fold-module-public-variables (lambda (obj result)
(if (bootloader? obj)
(cons obj result)
result))
'()
(bootloader-modules))))
(define (lookup-bootloader-by-name name)
"Return the bootloader called NAME."
(or (find (lambda (bootloader)
(eq? name (bootloader-name bootloader)))
(force %bootloaders))
(leave (G_ "~a: no such bootloader~%") name)))
(define (efi-bootloader-profile files bootloader-package hooks)
"Creates a profile with BOOTLOADER-PACKAGE and a directory collection/ with
links to additional FILES from the store. This collection is meant to be used
by the bootloader installer.
FILES is a list of file or directory names from the store, which will be
symlinked into the collection/ directory. If a directory name ends with '/',
then the directory content instead of the directory itself will be symlinked
into the collection/ directory.
FILES may contain file like objects produced by functions like plain-file,
local-file, etc., or package contents produced with file-append.
HOOKS lists additional hook functions to modify the profile."
(define (bootloader-collection manifest)
(define build
(with-imported-modules '((guix build utils)
(ice-9 ftw)
(srfi srfi-1)
(srfi srfi-26))
#~(begin
(use-modules ((guix build utils)
#:select (mkdir-p strip-store-file-name))
((ice-9 ftw)
#:select (scandir))
((srfi srfi-1)
#:select (append-map every remove))
((srfi srfi-26)
#:select (cut)))
(define (symlink-to file directory transform)
"Creates a symlink to FILE named (TRANSFORM FILE) in DIRECTORY."
(symlink file (string-append directory "/" (transform file))))
(define (directory-content directory)
"Creates a list of absolute path names inside DIRECTORY."
(map (lambda (name)
(string-append directory name))
(or (scandir directory (lambda (name)
(not (member name '("." "..")))))
'())))
(define name-ends-with-/? (cut string-suffix? "/" <>))
(define (name-is-store-entry? name)
"Return #t if NAME is a direct store entry and nothing inside."
(not (string-index (strip-store-file-name name) #\/)))
(let* ((collection (string-append #$output "/collection"))
(files '#$files)
(directories (filter name-ends-with-/? files))
(names-from-directories
(append-map (lambda (directory)
(directory-content directory))
directories))
(names (append names-from-directories
(remove name-ends-with-/? files))))
(mkdir-p collection)
(if (every file-exists? names)
(begin
(for-each (lambda (name)
(symlink-to name collection
(if (name-is-store-entry? name)
strip-store-file-name
basename)))
names)
#t)
#f)))))
(gexp->derivation "bootloader-collection"
build
#:local-build? #t
#:substitutable? #f
#:properties
`((type . profile-hook)
(hook . bootloader-collection))))
(profile (content (packages->manifest (list bootloader-package)))
(name "bootloader-profile")
(hooks (append (list bootloader-collection) hooks))
(locales? #f)
(allow-collisions? #f)
(relative-symlinks? #f)))
(define* (efi-bootloader-chain files
final-bootloader
#:key
(hooks '())
installer)
"Define a bootloader chain with FINAL-BOOTLOADER as the final bootloader and
certain directories and files from the store given in the list of FILES.
FILES may contain file like objects produced by functions like plain-file,
local-file, etc., or package contents produced with file-append. They will be
collected inside a directory collection/ inside a generated bootloader profile,
which will be passed to the INSTALLER.
If a directory name in FILES ends with '/', then the directory content instead
of the directory itself will be symlinked into the collection/ directory.
The procedures in the HOOKS list can be used to further modify the bootloader
profile. It is possible to pass a single function instead of a list.
If the INSTALLER argument is used, then this function will be called to install
the bootloader. Otherwise the installer of the FINAL-BOOTLOADER will be called."
(let* ((final-installer (or installer
(bootloader-installer final-bootloader)))
(profile (efi-bootloader-profile files
(bootloader-package final-bootloader)
(if (list? hooks)
hooks
(list hooks)))))
(bootloader
(inherit final-bootloader)
(package profile)
(installer
#~(lambda (bootloader target mount-point)
(#$final-installer bootloader target mount-point)
(copy-recursively
(string-append bootloader "/collection")
(string-append mount-point target)
#:follow-symlinks? #t
#:log (%make-void-port "w")))))))
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