60d4652c5d
Generating a raw-with-offset image would previously not be bootable with U-Boot. * gnu/system/image.scm (root-partition) [file-system-options]: New field.
1007 lines
38 KiB
Scheme
1007 lines
38 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2020, 2021, 2022 Mathieu Othacehe <othacehe@gnu.org>
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;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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;;; Copyright © 2022 Pavel Shlyak <p.shlyak@pantherx.org>
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;;; Copyright © 2022 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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;;; Copyright © 2022 Alex Griffin <a@ajgrf.com>
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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 system image)
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#:use-module (guix diagnostics)
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#:use-module (guix discovery)
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#:use-module (guix gexp)
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#:use-module (guix modules)
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#:use-module (guix monads)
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#:use-module (guix records)
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#:use-module (guix store)
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#:use-module (guix ui)
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#:use-module (guix utils)
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#:use-module ((guix self) #:select (make-config.scm))
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#:use-module (gnu bootloader)
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#:use-module (gnu bootloader grub)
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#:use-module (gnu compression)
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#:use-module (gnu image)
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#:use-module (guix platform)
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#:use-module (gnu services)
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#:use-module (gnu services base)
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#:use-module (gnu system)
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#:use-module (gnu system accounts)
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#:use-module (gnu system file-systems)
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#:use-module (gnu system linux-container)
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#:use-module (gnu system uuid)
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#:use-module (gnu system vm)
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#:use-module (guix packages)
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#:use-module (gnu packages base)
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#:use-module (gnu packages bash)
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#:use-module (gnu packages bootloaders)
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#:use-module (gnu packages cdrom)
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#:use-module (gnu packages compression)
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#:use-module (gnu packages disk)
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#:use-module (gnu packages gawk)
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#:use-module (gnu packages genimage)
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#:use-module (gnu packages guile)
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#:autoload (gnu packages gnupg) (guile-gcrypt)
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#:use-module (gnu packages hurd)
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#:use-module (gnu packages linux)
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#:use-module (gnu packages mtools)
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#:use-module (gnu packages virtualization)
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#:use-module ((srfi srfi-1) #:prefix srfi-1:)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-35)
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#:use-module (rnrs bytevectors)
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#:use-module (ice-9 format)
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#:use-module (ice-9 match)
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#:export (root-offset
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root-label
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image-without-os
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esp-partition
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esp32-partition
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root-partition
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efi-disk-image
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iso9660-image
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docker-image
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tarball-image
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wsl2-image
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raw-with-offset-disk-image
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image-with-os
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efi-raw-image-type
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efi32-raw-image-type
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qcow2-image-type
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iso-image-type
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uncompressed-iso-image-type
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docker-image-type
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tarball-image-type
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wsl2-image-type
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raw-with-offset-image-type
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image-with-label
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system-image
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%image-types
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lookup-image-type-by-name))
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;;;
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;;; Images definitions.
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;;;
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;; This is the offset before the first partition. GRUB will install itself in
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;; this post-MBR gap.
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(define root-offset (* 512 2048))
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;; Generic root partition label.
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(define root-label "Guix_image")
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(define-syntax-rule (image-without-os . fields)
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"Return an image record with the mandatory operating-system field set to
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#false. This is useful when creating an image record that will serve as a
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parent image record."
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(image (operating-system #false) . fields))
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(define esp-partition
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(partition
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(size (* 40 (expt 2 20)))
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(offset root-offset)
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(label "GNU-ESP") ;cosmetic only
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;; Use "vfat" here since this property is used when mounting. The actual
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;; FAT-ness is based on file system size (16 in this case).
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(file-system "vfat")
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(flags '(esp))
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(initializer (gexp initialize-efi-partition))))
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(define esp32-partition
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(partition
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(inherit esp-partition)
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(initializer (gexp initialize-efi32-partition))))
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(define root-partition
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(partition
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(size 'guess)
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(label root-label)
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(file-system "ext4")
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;; Disable the metadata_csum and 64bit features of ext4, for compatibility
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;; with U-Boot.
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(file-system-options (list "-O" "^metadata_csum,^64bit"))
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(flags '(boot))
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(initializer (gexp initialize-root-partition))))
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(define efi-disk-image
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(image-without-os
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(format 'disk-image)
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(partitions (list esp-partition root-partition))))
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(define efi32-disk-image
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(image-without-os
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(format 'disk-image)
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(partitions (list esp32-partition root-partition))))
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(define iso9660-image
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(image-without-os
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(format 'iso9660)
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(partitions
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(list (partition
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(size 'guess)
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(label "GUIX_IMAGE")
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(flags '(boot)))))))
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(define docker-image
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(image-without-os
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(format 'docker)))
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(define tarball-image
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(image-without-os
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(format 'tarball)))
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(define wsl2-image
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(image-without-os
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(format 'wsl2)))
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(define* (raw-with-offset-disk-image #:optional (offset root-offset))
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(image-without-os
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(format 'disk-image)
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(partitions
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(list (partition
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(inherit root-partition)
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(offset offset))))
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;; FIXME: Deleting and creating "/var/run" and "/tmp" on the overlayfs
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;; fails.
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(volatile-root? #f)))
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;;;
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;;; Images types.
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;;;
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(define-syntax-rule (image-with-os base-image os)
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"Return an image inheriting from BASE-IMAGE, with the operating-system field
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set to the given OS."
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(image
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(inherit base-image)
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(operating-system os)))
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(define efi-raw-image-type
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(image-type
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(name 'efi-raw)
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(constructor (cut image-with-os efi-disk-image <>))))
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(define efi32-raw-image-type
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(image-type
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(name 'efi32-raw)
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(constructor (cut image-with-os efi32-disk-image <>))))
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(define qcow2-image-type
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(image-type
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(name 'qcow2)
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(constructor (cut image-with-os
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(image
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(inherit efi-disk-image)
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(name 'image.qcow2)
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(format 'compressed-qcow2))
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<>))))
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(define iso-image-type
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(image-type
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(name 'iso9660)
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(constructor (cut image-with-os iso9660-image <>))))
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(define uncompressed-iso-image-type
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(image-type
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(name 'uncompressed-iso9660)
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(constructor (cut image-with-os
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(image
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(inherit iso9660-image)
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(compression? #f))
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<>))))
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(define docker-image-type
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(image-type
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(name 'docker)
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(constructor (cut image-with-os docker-image <>))))
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(define tarball-image-type
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(image-type
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(name 'tarball)
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(constructor (cut image-with-os tarball-image <>))))
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(define wsl2-image-type
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(image-type
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(name 'wsl2)
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(constructor (cut image-with-os wsl2-image <>))))
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(define raw-with-offset-image-type
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(image-type
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(name 'raw-with-offset)
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(constructor (cut image-with-os (raw-with-offset-disk-image) <>))))
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;;
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;; Helpers.
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;;
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(define not-config?
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;; Select (guix …) and (gnu …) modules, except (guix config).
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(match-lambda
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(('guix 'config) #f)
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(('guix rest ...) #t)
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(('gnu rest ...) #t)
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(rest #f)))
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(define (partition->gexp partition)
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"Turn PARTITION, a <partition> object, into a list-valued gexp suitable for
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'make-partition-image'."
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#~'(#$@(list (partition-size partition))
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#$(partition-file-system partition)
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#$(partition-file-system-options partition)
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#$(partition-label partition)
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#$(and=> (partition-uuid partition)
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uuid-bytevector)
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#$(partition-flags partition)))
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(define gcrypt-sqlite3&co
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;; Guile-Gcrypt, Guile-SQLite3, and their propagated inputs.
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(srfi-1:append-map
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(lambda (package)
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(cons package
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(match (package-transitive-propagated-inputs package)
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(((labels packages) ...)
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packages))))
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(list guile-gcrypt guile-sqlite3)))
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(define-syntax-rule (with-imported-modules* gexp* ...)
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(with-extensions gcrypt-sqlite3&co
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(with-imported-modules `(,@(source-module-closure
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'((gnu build image)
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(gnu build bootloader)
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(gnu build hurd-boot)
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(gnu build linux-boot)
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(guix store database))
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#:select? not-config?)
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((guix config) => ,(make-config.scm)))
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#~(begin
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(use-modules (gnu build image)
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(gnu build bootloader)
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(gnu build hurd-boot)
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(gnu build linux-boot)
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(guix store database)
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(guix build utils))
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gexp* ...))))
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(define (root-partition? partition)
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"Return true if PARTITION is the root partition, false otherwise."
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(member 'boot (partition-flags partition)))
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(define (find-root-partition image)
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"Return the root partition of the given IMAGE."
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(or (srfi-1:find root-partition? (image-partitions image))
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(raise (formatted-message
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(G_ "image lacks a partition with the 'boot' flag")))))
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(define (root-partition-index image)
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"Return the index of the root partition of the given IMAGE."
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(1+ (srfi-1:list-index root-partition? (image-partitions image))))
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;;
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;; Disk image.
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;;
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(define* (system-disk-image image
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#:key
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(name "disk-image")
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bootcfg
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bootloader
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register-closures?
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(inputs '()))
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"Return as a file-like object, the disk-image described by IMAGE. Said
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image can be copied on a USB stick as is. BOOTLOADER is the bootloader that
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will be installed and configured according to BOOTCFG parameter.
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Raw images of the IMAGE partitions are first created. Then, genimage is used
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to assemble the partition images into a disk-image without resorting to a
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virtual machine.
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INPUTS is a list of inputs (as for packages). When REGISTER-CLOSURES? is
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true, register INPUTS in the store database of the image so that Guix can be
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used in the image."
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(define genimage-name "image")
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(define (image->genimage-cfg image)
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;; Return as a file-like object, the genimage configuration file
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;; describing the given IMAGE.
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(define (format->image-type format)
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;; Return the genimage format corresponding to FORMAT. For now, only
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;; the hdimage format (raw disk-image) is supported.
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(cond
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((memq format '(disk-image compressed-qcow2)) "hdimage")
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(else
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(raise (condition
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(&message
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(message
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(format #f (G_ "unsupported image type: ~a")
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format))))))))
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(define (partition->dos-type partition)
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;; Return the MBR partition type corresponding to the given PARTITION.
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;; See: https://en.wikipedia.org/wiki/Partition_type.
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(let ((flags (partition-flags partition))
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(file-system (partition-file-system partition)))
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(cond
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((member 'esp flags) "0xEF")
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((string-prefix? "ext" file-system) "0x83")
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((or (string=? file-system "vfat")
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(string=? file-system "fat16")) "0x0E")
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((string=? file-system "fat32") "0x0C")
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(else
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(raise (condition
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(&message
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(message
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(format #f (G_ "unsupported partition type: ~a")
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file-system)))))))))
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(define (partition->gpt-type partition)
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;; Return the genimage GPT partition type code corresponding to the
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;; given PARTITION. See:
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;; https://github.com/pengutronix/genimage/blob/master/README.rst
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(let ((flags (partition-flags partition))
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(file-system (partition-file-system partition)))
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(cond
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((member 'esp flags) "U")
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((string-prefix? "ext" file-system) "L")
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((or (string=? file-system "vfat")
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(string=? file-system "fat16")
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(string=? file-system "fat32")) "F")
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(else
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(raise (condition
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(&message
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(message
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(format #f (G_ "unsupported partition type: ~a")
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file-system)))))))))
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(define (partition-image partition)
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;; Return as a file-like object, an image of the given PARTITION. A
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;; directory, filled by calling the PARTITION initializer procedure, is
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;; first created within the store. Then, an image of this directory is
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;; created using tools such as 'mke2fs' or 'mkdosfs', depending on the
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;; partition file-system type.
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(let* ((os (image-operating-system image))
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(schema (local-file (search-path %load-path
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"guix/store/schema.sql")))
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(graph (match inputs
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(((names . _) ...)
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names)))
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(type (partition-file-system partition))
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(image-builder
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(with-imported-modules*
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(let ((initializer (or #$(partition-initializer partition)
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initialize-root-partition))
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(inputs '#+(list e2fsprogs fakeroot dosfstools mtools))
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(image-root "tmp-root"))
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(sql-schema #$schema)
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(set-path-environment-variable "PATH" '("bin" "sbin") inputs)
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;; Allow non-ASCII file names--e.g., 'nss-certs'--to be
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;; decoded.
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(setenv "GUIX_LOCPATH"
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#+(file-append glibc-utf8-locales "/lib/locale"))
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(setlocale LC_ALL "en_US.utf8")
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(initializer image-root
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#:references-graphs '#$graph
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#:deduplicate? #f
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#:copy-closures? (not
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#$(image-shared-store? image))
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#:system-directory #$os
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#:grub-efi #+grub-efi
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#:grub-efi32 #+grub-efi32
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#:bootloader-package
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#+(bootloader-package bootloader)
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#:bootloader-installer
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#+(bootloader-installer bootloader)
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#:bootcfg #$bootcfg
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#:bootcfg-location
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#$(bootloader-configuration-file bootloader))
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(make-partition-image #$(partition->gexp partition)
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#$output
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image-root)))))
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(computed-file "partition.img" image-builder
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;; Allow offloading so that this I/O-intensive process
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;; doesn't run on the build farm's head node.
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#:local-build? #f
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#:options `(#:references-graphs ,inputs))))
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(define (gpt-image? image)
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(eq? 'gpt (image-partition-table-type image)))
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(define (partition-type-values image partition)
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(if (gpt-image? image)
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(values "partition-type-uuid" (partition->gpt-type partition))
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(values "partition-type" (partition->dos-type partition))))
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(define (partition->config image partition)
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;; Return the genimage partition configuration for PARTITION.
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(let-values (((partition-type-attribute partition-type-value)
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(partition-type-values image partition)))
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(let ((label (partition-label partition))
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(image (partition-image partition))
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(offset (partition-offset partition))
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(bootable (if (memq 'boot (partition-flags partition))
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"true" "false" )))
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#~(format #f "~/partition ~a {
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~/~/~a = ~a
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~/~/image = \"~a\"
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~/~/offset = \"~a\"
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~/~/bootable = \"~a\"
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~/}"
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#$label
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#$partition-type-attribute
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#$partition-type-value
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#$image
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#$offset
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#$bootable))))
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(define (genimage-type-options image-type image)
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(cond
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((equal? image-type "hdimage")
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(format #f "~%~/~/partition-table-type = \"~a\"~%~/"
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(image-partition-table-type image)))
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(else "")))
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(let* ((format (image-format image))
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(image-type (format->image-type format))
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(image-type-options (genimage-type-options image-type image))
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(partitions (image-partitions image))
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(partitions-config (map (cut partition->config image <>) partitions))
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(builder
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#~(begin
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(let ((format (@ (ice-9 format) format)))
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(call-with-output-file #$output
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(lambda (port)
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(format port
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"\
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image ~a {
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~/~a {~a}
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~{~a~^~%~}
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}~%" #$genimage-name #$image-type #$image-type-options
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(list #$@partitions-config))))))))
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(computed-file "genimage.cfg" builder)))
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(let* ((image-name (image-name image))
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||
(name (if image-name
|
||
(symbol->string image-name)
|
||
name))
|
||
(format (image-format image))
|
||
(substitutable? (image-substitutable? image))
|
||
(builder
|
||
(with-imported-modules*
|
||
(let ((inputs '#+(list genimage coreutils findutils qemu-minimal))
|
||
(bootloader-installer
|
||
#+(bootloader-disk-image-installer bootloader))
|
||
(out-image (string-append "images/" #$genimage-name)))
|
||
(set-path-environment-variable "PATH" '("bin" "sbin") inputs)
|
||
(genimage #$(image->genimage-cfg image))
|
||
;; Install the bootloader directly on the disk-image.
|
||
(when bootloader-installer
|
||
(bootloader-installer
|
||
#+(bootloader-package bootloader)
|
||
#$(root-partition-index image)
|
||
out-image))
|
||
(convert-disk-image out-image '#$format #$output)))))
|
||
(computed-file name builder
|
||
#:local-build? #f ;too I/O-intensive
|
||
#:options `(#:substitutable? ,substitutable?))))
|
||
|
||
|
||
;;
|
||
;; ISO9660 image.
|
||
;;
|
||
|
||
(define (has-guix-service-type? os)
|
||
"Return true if OS contains a service of the type GUIX-SERVICE-TYPE."
|
||
(not (not (srfi-1:find (lambda (service)
|
||
(eq? (service-kind service) guix-service-type))
|
||
(operating-system-services os)))))
|
||
|
||
(define* (system-iso9660-image image
|
||
#:key
|
||
(name "image.iso")
|
||
bootcfg
|
||
bootloader
|
||
register-closures?
|
||
(inputs '())
|
||
(grub-mkrescue-environment '()))
|
||
"Return as a file-like object a bootable, stand-alone iso9660 image.
|
||
|
||
INPUTS is a list of inputs (as for packages). When REGISTER-CLOSURES? is
|
||
true, register INPUTS in the store database of the image so that Guix can be
|
||
used in the image. "
|
||
(define root-label
|
||
(match (image-partitions image)
|
||
((partition)
|
||
(partition-label partition))))
|
||
|
||
(define root-uuid
|
||
(match (image-partitions image)
|
||
((partition)
|
||
(uuid-bytevector (partition-uuid partition)))))
|
||
|
||
(let* ((os (image-operating-system image))
|
||
(bootloader (bootloader-package bootloader))
|
||
(compression? (image-compression? image))
|
||
(substitutable? (image-substitutable? image))
|
||
(schema (local-file (search-path %load-path
|
||
"guix/store/schema.sql")))
|
||
(graph (match inputs
|
||
(((names . _) ...)
|
||
names)))
|
||
(builder
|
||
(with-imported-modules*
|
||
(let* ((inputs '#$(list parted e2fsprogs dosfstools xorriso
|
||
sed grep coreutils findutils gawk))
|
||
(image-root "tmp-root"))
|
||
(sql-schema #$schema)
|
||
|
||
;; Allow non-ASCII file names--e.g., 'nss-certs'--to be decoded.
|
||
(setenv "GUIX_LOCPATH"
|
||
#+(file-append glibc-utf8-locales "/lib/locale"))
|
||
|
||
(setlocale LC_ALL "en_US.utf8")
|
||
|
||
(set-path-environment-variable "PATH" '("bin" "sbin") inputs)
|
||
|
||
(initialize-root-partition image-root
|
||
#:references-graphs '#$graph
|
||
#:deduplicate? #f
|
||
#:system-directory #$os)
|
||
(make-iso9660-image #$xorriso
|
||
'#$grub-mkrescue-environment
|
||
#$bootloader
|
||
#$bootcfg
|
||
#$os
|
||
image-root
|
||
#$output
|
||
#:references-graphs '#$graph
|
||
#:register-closures? #$register-closures?
|
||
#:compression? #$compression?
|
||
#:volume-id #$root-label
|
||
#:volume-uuid #$root-uuid)))))
|
||
(computed-file name builder
|
||
;; Allow offloading so that this I/O-intensive process
|
||
;; doesn't run on the build farm's head node.
|
||
#:local-build? #f
|
||
#:options `(#:references-graphs ,inputs
|
||
#:substitutable? ,substitutable?))))
|
||
|
||
(define (image-with-label base-image label)
|
||
"The volume ID of an ISO is the label of the first partition. This procedure
|
||
returns an image record where the first partition's label is set to <label>."
|
||
(image
|
||
(inherit base-image)
|
||
(partitions
|
||
(match (image-partitions base-image)
|
||
((boot others ...)
|
||
(cons
|
||
(partition
|
||
(inherit boot)
|
||
(label label))
|
||
others))))))
|
||
|
||
|
||
;;
|
||
;; Docker image.
|
||
;;
|
||
|
||
(define* (system-docker-image image
|
||
#:key
|
||
(name "docker-image"))
|
||
"Build a docker image for IMAGE. NAME is the base name to use for the
|
||
output file."
|
||
(define boot-program
|
||
;; Program that runs the boot script of OS, which in turn starts shepherd.
|
||
(program-file "boot-program"
|
||
#~(let ((system (cadr (command-line))))
|
||
(setenv "GUIX_NEW_SYSTEM" system)
|
||
(execl #$(file-append guile-3.0 "/bin/guile")
|
||
"guile" "--no-auto-compile"
|
||
(string-append system "/boot")))))
|
||
|
||
(define shared-network?
|
||
(image-shared-network? image))
|
||
|
||
(let* ((os (operating-system-with-gc-roots
|
||
(containerized-operating-system
|
||
(image-operating-system image) '()
|
||
#:shared-network?
|
||
shared-network?)
|
||
(list boot-program)))
|
||
(substitutable? (image-substitutable? image))
|
||
(image-target (or (%current-target-system)
|
||
(nix-system->gnu-triplet)))
|
||
(register-closures? (has-guix-service-type? os))
|
||
(schema (and register-closures?
|
||
(local-file (search-path %load-path
|
||
"guix/store/schema.sql"))))
|
||
(name (string-append name ".tar.gz"))
|
||
(graph "system-graph"))
|
||
(define builder
|
||
(with-extensions (cons guile-json-3 ;for (guix docker)
|
||
gcrypt-sqlite3&co) ;for (guix store database)
|
||
(with-imported-modules `(,@(source-module-closure
|
||
'((guix docker)
|
||
(guix store database)
|
||
(guix build utils)
|
||
(guix build store-copy)
|
||
(gnu build image))
|
||
#:select? not-config?)
|
||
((guix config) => ,(make-config.scm)))
|
||
#~(begin
|
||
(use-modules (guix docker)
|
||
(guix build utils)
|
||
(gnu build image)
|
||
(srfi srfi-19)
|
||
(guix build store-copy)
|
||
(guix store database))
|
||
|
||
;; Set the SQL schema location.
|
||
(sql-schema #$schema)
|
||
|
||
;; Allow non-ASCII file names--e.g., 'nss-certs'--to be decoded.
|
||
(setenv "GUIX_LOCPATH"
|
||
#+(file-append glibc-utf8-locales "/lib/locale"))
|
||
(setlocale LC_ALL "en_US.utf8")
|
||
|
||
(set-path-environment-variable "PATH" '("bin" "sbin") '(#+tar))
|
||
|
||
(let ((image-root (string-append (getcwd) "/tmp-root")))
|
||
(mkdir-p image-root)
|
||
(initialize-root-partition image-root
|
||
#:references-graphs '(#$graph)
|
||
#:copy-closures? #f
|
||
#:register-closures? #$register-closures?
|
||
#:deduplicate? #f
|
||
#:system-directory #$os)
|
||
(build-docker-image
|
||
#$output
|
||
(cons* image-root
|
||
(map store-info-item
|
||
(call-with-input-file #$graph
|
||
read-reference-graph)))
|
||
#$os
|
||
#:entry-point '(#$boot-program #$os)
|
||
#:compressor '(#+(file-append gzip "/bin/gzip") "-9n")
|
||
#:creation-time (make-time time-utc 0 1)
|
||
#:system #$image-target
|
||
#:transformations `((,image-root -> ""))))))))
|
||
|
||
(computed-file name builder
|
||
;; Allow offloading so that this I/O-intensive process
|
||
;; doesn't run on the build farm's head node.
|
||
#:local-build? #f
|
||
#:options `(#:references-graphs ((,graph ,os))
|
||
#:substitutable? ,substitutable?))))
|
||
|
||
|
||
;;;
|
||
;;; Tarball image.
|
||
;;;
|
||
|
||
;; TODO: Some bits can be factorized with (guix scripts pack).
|
||
(define* (system-tarball-image image
|
||
#:key
|
||
(name "image")
|
||
(compressor (srfi-1:first %compressors))
|
||
(wsl? #f))
|
||
"Build a tarball of IMAGE. NAME is the base name to use for the
|
||
output file."
|
||
(let* ((os (image-operating-system image))
|
||
(substitutable? (image-substitutable? image))
|
||
(schema (local-file (search-path %load-path
|
||
"guix/store/schema.sql")))
|
||
(name (string-append name ".tar" (compressor-extension compressor)))
|
||
(graph "system-graph")
|
||
(root (srfi-1:find (lambda (user)
|
||
(and=> (user-account-uid user) zero?))
|
||
(operating-system-users os)))
|
||
(root-shell (or (and=> root user-account-shell)
|
||
(file-append bash "/bin/bash"))))
|
||
(define builder
|
||
(with-extensions gcrypt-sqlite3&co ;for (guix store database)
|
||
(with-imported-modules `(,@(source-module-closure
|
||
'((guix build pack)
|
||
(guix build store-copy)
|
||
(guix build utils)
|
||
(guix store database)
|
||
(gnu build image))
|
||
#:select? not-config?)
|
||
((guix config) => ,(make-config.scm)))
|
||
#~(begin
|
||
(use-modules (guix build pack)
|
||
(guix build store-copy)
|
||
(guix build utils)
|
||
(guix store database)
|
||
(gnu build image))
|
||
|
||
;; Set the SQL schema location.
|
||
(sql-schema #$schema)
|
||
|
||
;; Allow non-ASCII file names--e.g., 'nss-certs'--to be decoded.
|
||
(setenv "GUIX_LOCPATH"
|
||
#+(file-append glibc-utf8-locales "/lib/locale"))
|
||
(setlocale LC_ALL "en_US.utf8")
|
||
|
||
(let ((image-root (string-append (getcwd) "/tmp-root"))
|
||
(tar #+(file-append tar "/bin/tar")))
|
||
|
||
(mkdir-p image-root)
|
||
(initialize-root-partition image-root
|
||
#:references-graphs '(#$graph)
|
||
#:deduplicate? #f
|
||
#:system-directory #$os)
|
||
|
||
(with-directory-excursion image-root
|
||
#$@(if wsl?
|
||
#~(;; WSL requires /bin/sh. Will be overwritten by
|
||
;; system activation.
|
||
(symlink #$root-shell "./bin/sh")
|
||
|
||
;; WSL requires /bin/mount to access the host fs.
|
||
(symlink #$(file-append util-linux "/bin/mount")
|
||
"./bin/mount"))
|
||
#~())
|
||
|
||
(apply invoke tar "-cvf" #$output "."
|
||
(tar-base-options
|
||
#:tar tar
|
||
#:compressor
|
||
#+(and=> compressor compressor-command)))))))))
|
||
|
||
(computed-file name builder
|
||
;; Allow offloading so that this I/O-intensive process
|
||
;; doesn't run on the build farm's head node.
|
||
#:local-build? #f
|
||
#:options `(#:references-graphs ((,graph ,os))
|
||
#:substitutable? ,substitutable?))))
|
||
|
||
|
||
;;
|
||
;; Image creation.
|
||
;;
|
||
|
||
(define (image->root-file-system image)
|
||
"Return the IMAGE root partition file-system type."
|
||
(case (image-format image)
|
||
((iso9660) "iso9660")
|
||
((docker tarball wsl2) "dummy")
|
||
(else
|
||
(partition-file-system (find-root-partition image)))))
|
||
|
||
(define (root-size image)
|
||
"Return the root partition size of IMAGE."
|
||
(let* ((image-size (image-size image))
|
||
(root-partition (find-root-partition image))
|
||
(root-size (partition-size root-partition)))
|
||
(cond
|
||
((and (eq? root-size 'guess) image-size)
|
||
image-size)
|
||
(else root-size))))
|
||
|
||
(define* (image-with-os* base-image os)
|
||
"Return an image based on BASE-IMAGE but with the operating-system field set
|
||
to OS. Also set the UUID and the size of the root partition."
|
||
(define root-file-system
|
||
(srfi-1:find
|
||
(lambda (fs)
|
||
(string=? (file-system-mount-point fs) "/"))
|
||
(operating-system-file-systems os)))
|
||
|
||
(image
|
||
(inherit base-image)
|
||
(operating-system os)
|
||
(partitions
|
||
(map (lambda (p)
|
||
(if (root-partition? p)
|
||
(partition
|
||
(inherit p)
|
||
(uuid (file-system-device root-file-system))
|
||
(size (root-size base-image)))
|
||
p))
|
||
(image-partitions base-image)))))
|
||
|
||
(define (operating-system-for-image image)
|
||
"Return an operating-system based on the one specified in IMAGE, but
|
||
suitable for image creation. Assign an UUID to the root file-system, so that
|
||
it can be used for bootloading."
|
||
(define volatile-root? (if (eq? (image-format image) 'iso9660)
|
||
#t
|
||
(image-volatile-root? image)))
|
||
|
||
(define (root-uuid os)
|
||
;; UUID of the root file system, computed in a deterministic fashion.
|
||
;; This is what we use to locate the root file system so it has to be
|
||
;; different from the user's own file system UUIDs.
|
||
(let ((type (if (eq? (image-format image) 'iso9660)
|
||
'iso9660
|
||
'dce)))
|
||
(operating-system-uuid os type)))
|
||
|
||
(let* ((root-file-system-type (image->root-file-system image))
|
||
(base-os (image-operating-system image))
|
||
(file-systems-to-keep
|
||
(srfi-1:remove
|
||
(lambda (fs)
|
||
(let ((mount-point (file-system-mount-point fs)))
|
||
(or (string=? mount-point "/")
|
||
(string=? mount-point "/boot/efi"))))
|
||
(operating-system-file-systems base-os)))
|
||
(format (image-format image))
|
||
(os
|
||
(operating-system
|
||
(inherit base-os)
|
||
(initrd (lambda (file-systems . rest)
|
||
(apply (operating-system-initrd base-os)
|
||
file-systems
|
||
#:volatile-root? volatile-root?
|
||
rest)))
|
||
(bootloader (if (eq? format 'iso9660)
|
||
(bootloader-configuration
|
||
(inherit
|
||
(operating-system-bootloader base-os))
|
||
(bootloader grub-mkrescue-bootloader))
|
||
(operating-system-bootloader base-os)))
|
||
(file-systems (cons (file-system
|
||
(mount-point "/")
|
||
(device "/dev/placeholder")
|
||
(type root-file-system-type))
|
||
file-systems-to-keep))))
|
||
(uuid (root-uuid os)))
|
||
(operating-system
|
||
(inherit os)
|
||
(file-systems (cons (file-system
|
||
(mount-point "/")
|
||
(device uuid)
|
||
(type root-file-system-type))
|
||
file-systems-to-keep)))))
|
||
|
||
(define* (system-image image)
|
||
"Return the derivation of IMAGE. It can be a raw disk-image or an ISO9660
|
||
image, depending on IMAGE format."
|
||
(define platform (image-platform image))
|
||
|
||
;; The image platform definition may provide the appropriate "system"
|
||
;; architecture for the image. If we are already running on this system,
|
||
;; the image can be built natively. If we are running on a different
|
||
;; system, then we need to cross-compile, using the "target" provided by the
|
||
;; image definition.
|
||
(define system (and=> platform platform-system))
|
||
(define target (cond
|
||
;; No defined platform, let's use the user defined
|
||
;; system/target parameters.
|
||
((not platform)
|
||
(%current-target-system))
|
||
;; The current system is the same as the platform system, no
|
||
;; need to cross-compile.
|
||
((and system
|
||
(string=? system (%current-system)))
|
||
#f)
|
||
;; If there is a user defined target let's override the
|
||
;; platform target. Otherwise, we can cross-compile to the
|
||
;; platform target.
|
||
(else
|
||
(or (%current-target-system)
|
||
(and=> platform platform-target)))))
|
||
|
||
(with-parameters ((%current-target-system target))
|
||
(let* ((os (operating-system-for-image image))
|
||
(image* (image-with-os* image os))
|
||
(image-format (image-format image))
|
||
(register-closures? (has-guix-service-type? os))
|
||
(bootcfg (operating-system-bootcfg os))
|
||
(bootloader (bootloader-configuration-bootloader
|
||
(operating-system-bootloader os))))
|
||
(cond
|
||
((memq image-format '(disk-image compressed-qcow2))
|
||
(system-disk-image image*
|
||
#:bootcfg bootcfg
|
||
#:bootloader bootloader
|
||
#:register-closures? register-closures?
|
||
#:inputs `(("system" ,os)
|
||
("bootcfg" ,bootcfg))))
|
||
((memq image-format '(docker))
|
||
(system-docker-image image*))
|
||
((memq image-format '(tarball))
|
||
(system-tarball-image image*))
|
||
((memq image-format '(wsl2))
|
||
(system-tarball-image image* #:wsl? #t))
|
||
((memq image-format '(iso9660))
|
||
(system-iso9660-image
|
||
image*
|
||
#:bootcfg bootcfg
|
||
#:bootloader bootloader
|
||
#:register-closures? register-closures?
|
||
#:inputs `(("system" ,os)
|
||
("bootcfg" ,bootcfg))
|
||
;; Make sure to use a mode that does no imply
|
||
;; HFS+ tree creation that may fail with:
|
||
;;
|
||
;; "libisofs: FAILURE : Too much files to mangle,
|
||
;; cannot guarantee unique file names"
|
||
;;
|
||
;; This happens if some limits are exceeded, see:
|
||
;; https://lists.gnu.org/archive/html/grub-devel/2020-06/msg00048.html
|
||
#:grub-mkrescue-environment
|
||
'(("MKRESCUE_SED_MODE" . "mbr_only"))))
|
||
(else
|
||
(raise (formatted-message
|
||
(G_ "~a: unsupported image format") image-format)))))))
|
||
|
||
|
||
;;;
|
||
;;; Image type discovery.
|
||
;;;
|
||
|
||
(define (image-modules)
|
||
"Return the list of image modules."
|
||
(cons (resolve-interface '(gnu system image))
|
||
(all-modules (map (lambda (entry)
|
||
`(,entry . "gnu/system/images/"))
|
||
%load-path)
|
||
#:warn warn-about-load-error)))
|
||
|
||
(define %image-types
|
||
;; The list of publically-known image types.
|
||
(delay (fold-module-public-variables (lambda (obj result)
|
||
(if (image-type? obj)
|
||
(cons obj result)
|
||
result))
|
||
'()
|
||
(image-modules))))
|
||
|
||
(define (lookup-image-type-by-name name)
|
||
"Return the image type called NAME."
|
||
(or (srfi-1:find (lambda (image-type)
|
||
(eq? name (image-type-name image-type)))
|
||
(force %image-types))
|
||
(raise
|
||
(formatted-message (G_ "~a: no such image type") name))))
|
||
|
||
;;; image.scm ends here
|