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74eeb11dae
* gnu/bootloader.scm (efi-bootloader-profile): New function. (efi-bootloader-chain): New function. Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>
352 lines
14 KiB
Scheme
352 lines
14 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2017 David Craven <david@craven.ch>
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;;; Copyright © 2017, 2020 Mathieu Othacehe <m.othacehe@gmail.com>
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;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
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;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu bootloader)
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#:use-module (guix discovery)
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#:use-module (guix gexp)
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#:use-module (guix profiles)
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#:use-module (guix records)
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#:use-module (guix ui)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 match)
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#:export (menu-entry
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menu-entry?
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menu-entry-label
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menu-entry-device
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menu-entry-linux
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menu-entry-linux-arguments
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menu-entry-initrd
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menu-entry-device-mount-point
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menu-entry-multiboot-kernel
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menu-entry-multiboot-arguments
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menu-entry-multiboot-modules
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menu-entry->sexp
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sexp->menu-entry
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bootloader
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bootloader?
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bootloader-name
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bootloader-package
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bootloader-installer
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bootloader-disk-image-installer
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bootloader-configuration-file
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bootloader-configuration-file-generator
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bootloader-configuration
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bootloader-configuration?
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bootloader-configuration-bootloader
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bootloader-configuration-target
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bootloader-configuration-menu-entries
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bootloader-configuration-default-entry
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bootloader-configuration-timeout
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bootloader-configuration-keyboard-layout
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bootloader-configuration-theme
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bootloader-configuration-terminal-outputs
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bootloader-configuration-terminal-inputs
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bootloader-configuration-serial-unit
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bootloader-configuration-serial-speed
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bootloader-configuration-additional-configuration
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%bootloaders
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lookup-bootloader-by-name
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efi-bootloader-chain))
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;;;
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;;; Menu-entry record.
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;;;
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(define-record-type* <menu-entry>
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menu-entry make-menu-entry
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menu-entry?
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(label menu-entry-label)
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(device menu-entry-device ; file system uuid, label, or #f
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(default #f))
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(device-mount-point menu-entry-device-mount-point
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(default #f))
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(linux menu-entry-linux
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(default #f))
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(linux-arguments menu-entry-linux-arguments
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(default '())) ; list of string-valued gexps
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(initrd menu-entry-initrd ; file name of the initrd as a gexp
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(default #f))
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(multiboot-kernel menu-entry-multiboot-kernel
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(default #f))
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(multiboot-arguments menu-entry-multiboot-arguments
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(default '())) ; list of string-valued gexps
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(multiboot-modules menu-entry-multiboot-modules
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(default '()))) ; list of multiboot commands, where
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; a command is a list of <string>
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(define (menu-entry->sexp entry)
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"Return ENTRY serialized as an sexp."
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(match entry
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(($ <menu-entry> label device mount-point linux linux-arguments initrd #f
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())
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`(menu-entry (version 0)
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(label ,label)
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(device ,device)
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(device-mount-point ,mount-point)
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(linux ,linux)
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(linux-arguments ,linux-arguments)
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(initrd ,initrd)))
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(($ <menu-entry> label device mount-point #f () #f
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multiboot-kernel multiboot-arguments multiboot-modules)
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`(menu-entry (version 0)
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(label ,label)
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(device ,device)
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(device-mount-point ,mount-point)
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(multiboot-kernel ,multiboot-kernel)
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(multiboot-arguments ,multiboot-arguments)
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(multiboot-modules ,multiboot-modules)))))
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(define (sexp->menu-entry sexp)
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"Turn SEXP, an sexp as returned by 'menu-entry->sexp', into a <menu-entry>
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record."
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(match sexp
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(('menu-entry ('version 0)
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('label label) ('device device)
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('device-mount-point mount-point)
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('linux linux) ('linux-arguments linux-arguments)
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('initrd initrd) _ ...)
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(menu-entry
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(label label)
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(device device)
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(device-mount-point mount-point)
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(linux linux)
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(linux-arguments linux-arguments)
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(initrd initrd)))
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(('menu-entry ('version 0)
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('label label) ('device device)
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('device-mount-point mount-point)
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('multiboot-kernel multiboot-kernel)
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('multiboot-arguments multiboot-arguments)
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('multiboot-modules multiboot-modules) _ ...)
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(menu-entry
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(label label)
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(device device)
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(device-mount-point mount-point)
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(multiboot-kernel multiboot-kernel)
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(multiboot-arguments multiboot-arguments)
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(multiboot-modules multiboot-modules)))))
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;;;
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;;; Bootloader record.
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;;;
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;; The <bootloader> record contains fields expressing how the bootloader
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;; should be installed. Every bootloader in gnu/bootloader/ directory
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;; has to be described by this record.
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(define-record-type* <bootloader>
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bootloader make-bootloader
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bootloader?
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(name bootloader-name)
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(package bootloader-package)
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(installer bootloader-installer)
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(disk-image-installer bootloader-disk-image-installer
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(default #f))
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(configuration-file bootloader-configuration-file)
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(configuration-file-generator bootloader-configuration-file-generator))
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;;;
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;;; Bootloader configuration record.
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;;;
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;; The <bootloader-configuration> record contains bootloader independant
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;; configuration used to fill bootloader configuration file.
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(define-record-type* <bootloader-configuration>
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bootloader-configuration make-bootloader-configuration
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bootloader-configuration?
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(bootloader bootloader-configuration-bootloader) ;<bootloader>
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(target bootloader-configuration-target ;string
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(default #f))
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(menu-entries bootloader-configuration-menu-entries ;list of <menu-entry>
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(default '()))
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(default-entry bootloader-configuration-default-entry ;integer
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(default 0))
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(timeout bootloader-configuration-timeout ;seconds as integer
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(default 5))
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(keyboard-layout bootloader-configuration-keyboard-layout ;<keyboard-layout> | #f
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(default #f))
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(theme bootloader-configuration-theme ;bootloader-specific theme
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(default #f))
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(terminal-outputs bootloader-configuration-terminal-outputs ;list of symbols
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(default '(gfxterm)))
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(terminal-inputs bootloader-configuration-terminal-inputs ;list of symbols
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(default '()))
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(serial-unit bootloader-configuration-serial-unit ;integer | #f
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(default #f))
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(serial-speed bootloader-configuration-serial-speed ;integer | #f
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(default #f)))
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;;;
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;;; Bootloaders.
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;;;
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(define (bootloader-modules)
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"Return the list of bootloader modules."
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(all-modules (map (lambda (entry)
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`(,entry . "gnu/bootloader"))
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%load-path)
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#:warn warn-about-load-error))
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(define %bootloaders
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;; The list of publically-known bootloaders.
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(delay (fold-module-public-variables (lambda (obj result)
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(if (bootloader? obj)
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(cons obj result)
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result))
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'()
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(bootloader-modules))))
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(define (lookup-bootloader-by-name name)
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"Return the bootloader called NAME."
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(or (find (lambda (bootloader)
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(eq? name (bootloader-name bootloader)))
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(force %bootloaders))
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(leave (G_ "~a: no such bootloader~%") name)))
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(define (efi-bootloader-profile files bootloader-package hook)
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"Creates a profile with BOOTLOADER-PACKAGE and a directory collection/ with
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links to additional FILES from the store. This collection is meant to be used
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by the bootloader installer.
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FILES is a list of file or directory names from the store, which will be
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symlinked into the collection/ directory. If a directory name ends with '/',
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then the directory content instead of the directory itself will be symlinked
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into the collection/ directory.
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FILES may contain file like objects produced by functions like plain-file,
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local-file, etc., or package contents produced with file-append."
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(define (bootloader-collection manifest)
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(define build
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(with-imported-modules '((guix build utils)
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(ice-9 ftw)
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(srfi srfi-1)
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(srfi srfi-26))
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#~(begin
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(use-modules ((guix build utils)
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#:select (mkdir-p strip-store-file-name))
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((ice-9 ftw)
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#:select (scandir))
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((srfi srfi-1)
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#:select (append-map every remove))
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((srfi srfi-26)
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#:select (cut)))
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(define (symlink-to file directory transform)
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"Creates a symlink to FILE named (TRANSFORM FILE) in DIRECTORY."
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(symlink file (string-append directory "/" (transform file))))
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(define (directory-content directory)
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"Creates a list of absolute path names inside DIRECTORY."
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(map (lambda (name)
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(string-append directory name))
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(or (scandir directory (lambda (name)
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(not (member name '("." "..")))))
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'())))
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(define name-ends-with-/? (cut string-suffix? "/" <>))
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(define (name-is-store-entry? name)
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"Return #t if NAME is a direct store entry and nothing inside."
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(not (string-index (strip-store-file-name name) #\/)))
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(let* ((collection (string-append #$output "/collection"))
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(files '#$files)
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(directories (filter name-ends-with-/? files))
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(names-from-directories
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(append-map (lambda (directory)
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(directory-content directory))
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directories))
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(names (append names-from-directories
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(remove name-ends-with-/? files))))
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(mkdir-p collection)
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(if (every file-exists? names)
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(begin
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(for-each (lambda (name)
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(symlink-to name collection
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(if (name-is-store-entry? name)
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strip-store-file-name
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basename)))
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names)
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#t)
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#f)))))
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(gexp->derivation "bootloader-collection"
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build
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#:local-build? #t
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#:substitutable? #f
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#:properties
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`((type . profile-hook)
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(hook . bootloader-collection))))
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(profile (content (packages->manifest (list bootloader-package)))
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(name "efi-bootloader-profile")
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(hooks (append (list bootloader-collection)
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(or hook '())))
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(locales? #f)
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(allow-collisions? #f)
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(relative-symlinks? #f)))
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(define* (efi-bootloader-chain files
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final-bootloader
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#:key
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hook
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installer)
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"Define a bootloader chain with FINAL-BOOTLOADER as the final bootloader and
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certain directories and files from the store given in the list of FILES.
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FILES may contain file like objects produced by functions like plain-file,
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local-file, etc., or package contents produced with file-append. They will be
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collected inside a directory collection/ inside a generated bootloader profile,
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which will be passed to the INSTALLER.
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If a directory name in FILES ends with '/', then the directory content instead
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of the directory itself will be symlinked into the collection/ directory.
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The PROFILE-HOOK function can be used to further modify the bootloader profile.
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If the INSTALLER argument is used, then this function will be called to install
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the bootloader. Otherwise the installer of the FINAL-BOOTLOADER will be called.
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Independent of the INSTALLER argument, all files in the mentioned collection/
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directory of the bootloader profile will be copied into the bootloader target
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directory after the actual bootloader installer has been called."
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(let* ((final-installer (or installer
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(bootloader-installer final-bootloader)))
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(profile (efi-bootloader-profile files
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(bootloader-package final-bootloader)
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hook)))
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(bootloader
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(inherit final-bootloader)
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(package profile)
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(installer
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#~(lambda (bootloader target mount-point)
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(#$final-installer bootloader target mount-point)
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(copy-recursively
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(string-append bootloader "/collection")
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(string-append mount-point target)
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#:follow-symlinks? #t
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#:log (%make-void-port "w")))))))
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