777 lines
30 KiB
Scheme
777 lines
30 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
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;;; Copyright © 2015 Alex Kost <alezost@gmail.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)
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#:use-module (guix store)
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#:use-module (guix monads)
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#:use-module (guix gexp)
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#:use-module (guix records)
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#:use-module (guix packages)
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#:use-module (guix derivations)
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#:use-module (guix profiles)
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#:use-module (guix ui)
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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 guile)
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#:use-module (gnu packages admin)
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#:use-module (gnu packages linux)
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#:use-module (gnu packages pciutils)
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#:use-module (gnu packages package-management)
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#:use-module (gnu packages less)
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#:use-module (gnu packages zile)
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#:use-module (gnu packages nano)
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#:use-module (gnu packages lsof)
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#:use-module (gnu packages gawk)
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#:use-module (gnu packages man)
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#:use-module (gnu packages compression)
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#:use-module (gnu packages firmware)
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#:autoload (gnu packages cryptsetup) (cryptsetup)
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#:use-module (gnu services)
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#:use-module (gnu services shepherd)
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#:use-module (gnu services base)
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#:use-module (gnu system grub)
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#:use-module (gnu system shadow)
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#:use-module (gnu system nss)
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#:use-module (gnu system locale)
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#:use-module (gnu system pam)
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#:use-module (gnu system linux-initrd)
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#:use-module (gnu system file-systems)
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#:use-module (ice-9 match)
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#:use-module (srfi srfi-1)
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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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#:export (operating-system
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operating-system?
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operating-system-bootloader
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operating-system-services
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operating-system-user-services
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operating-system-packages
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operating-system-host-name
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operating-system-hosts-file
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operating-system-kernel
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operating-system-kernel-arguments
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operating-system-initrd
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operating-system-users
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operating-system-groups
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operating-system-issue
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operating-system-timezone
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operating-system-locale
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operating-system-locale-definitions
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operating-system-locale-libcs
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operating-system-mapped-devices
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operating-system-file-systems
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operating-system-store-file-system
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operating-system-activation-script
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operating-system-derivation
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operating-system-profile
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operating-system-grub.cfg
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operating-system-etc-directory
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operating-system-locale-directory
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operating-system-boot-script
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boot-parameters
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boot-parameters?
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boot-parameters-label
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boot-parameters-root-device
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boot-parameters-kernel
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boot-parameters-kernel-arguments
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read-boot-parameters
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local-host-aliases
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%setuid-programs
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%base-packages
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%base-firmware
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luks-device-mapping))
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;;; Commentary:
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;;;
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;;; This module supports whole-system configuration.
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;;;
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;;; Code:
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;; System-wide configuration.
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;; TODO: Add per-field docstrings/stexi.
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(define-record-type* <operating-system> operating-system
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make-operating-system
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operating-system?
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(kernel operating-system-kernel ; package
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(default linux-libre))
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(kernel-arguments operating-system-kernel-arguments
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(default '())) ; list of gexps/strings
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(bootloader operating-system-bootloader) ; <grub-configuration>
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(initrd operating-system-initrd ; (list fs) -> M derivation
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(default base-initrd))
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(firmware operating-system-firmware ; list of packages
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(default %base-firmware))
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(host-name operating-system-host-name) ; string
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(hosts-file operating-system-hosts-file ; file-like | #f
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(default #f))
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(mapped-devices operating-system-mapped-devices ; list of <mapped-device>
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(default '()))
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(file-systems operating-system-file-systems) ; list of fs
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(swap-devices operating-system-swap-devices ; list of strings
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(default '()))
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(users operating-system-users ; list of user accounts
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(default %base-user-accounts))
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(groups operating-system-groups ; list of user groups
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(default %base-groups))
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(skeletons operating-system-skeletons ; list of name/monadic value
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(default (default-skeletons)))
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(issue operating-system-issue ; string
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(default %default-issue))
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(packages operating-system-packages ; list of (PACKAGE OUTPUT...)
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(default %base-packages)) ; or just PACKAGE
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(timezone operating-system-timezone) ; string
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(locale operating-system-locale ; string
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(default "en_US.utf8"))
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(locale-definitions operating-system-locale-definitions ; list of <locale-definition>
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(default %default-locale-definitions))
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(locale-libcs operating-system-locale-libcs ; list of <packages>
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(default %default-locale-libcs))
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(name-service-switch operating-system-name-service-switch ; <name-service-switch>
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(default %default-nss))
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(services operating-system-user-services ; list of monadic services
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(default %base-services))
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(pam-services operating-system-pam-services ; list of PAM services
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(default (base-pam-services)))
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(setuid-programs operating-system-setuid-programs
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(default %setuid-programs)) ; list of string-valued gexps
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(sudoers-file operating-system-sudoers-file ; file-like
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(default %sudoers-specification)))
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;;;
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;;; Services.
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;;;
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(define (open-luks-device source target)
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"Return a gexp that maps SOURCE to TARGET as a LUKS device, using
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'cryptsetup'."
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#~(zero? (system* (string-append #$cryptsetup "/sbin/cryptsetup")
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"open" "--type" "luks"
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#$source #$target)))
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(define (close-luks-device source target)
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"Return a gexp that closes TARGET, a LUKS device."
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#~(zero? (system* (string-append #$cryptsetup "/sbin/cryptsetup")
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"close" #$target)))
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(define luks-device-mapping
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;; The type of LUKS mapped devices.
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(mapped-device-kind
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(open open-luks-device)
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(close close-luks-device)))
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(define (other-file-system-services os)
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"Return file system services for the file systems of OS that are not marked
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as 'needed-for-boot'."
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(define file-systems
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(remove file-system-needed-for-boot?
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(operating-system-file-systems os)))
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(define (device-mappings fs)
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(let ((device (file-system-device fs)))
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(if (string? device) ;title is 'device
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(filter (lambda (md)
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(string=? (string-append "/dev/mapper/"
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(mapped-device-target md))
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device))
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(operating-system-mapped-devices os))
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'())))
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(define (add-dependencies fs)
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;; Add the dependencies due to device mappings to FS.
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(file-system
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(inherit fs)
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(dependencies
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(delete-duplicates (append (device-mappings fs)
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(file-system-dependencies fs))
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eq?))))
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(map (compose file-system-service add-dependencies) file-systems))
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(define (mapped-device-user device file-systems)
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"Return a file system among FILE-SYSTEMS that uses DEVICE, or #f."
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(let ((target (string-append "/dev/mapper/" (mapped-device-target device))))
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(find (lambda (fs)
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(and (eq? 'device (file-system-title fs))
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(string=? (file-system-device fs) target)))
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file-systems)))
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(define (operating-system-user-mapped-devices os)
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"Return the subset of mapped devices that can be installed in
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user-land--i.e., those not needed during boot."
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(let ((devices (operating-system-mapped-devices os))
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(file-systems (operating-system-file-systems os)))
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(filter (lambda (md)
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(let ((user (mapped-device-user md file-systems)))
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(or (not user)
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(not (file-system-needed-for-boot? user)))))
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devices)))
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(define (operating-system-boot-mapped-devices os)
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"Return the subset of mapped devices that must be installed during boot,
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from the initrd."
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(let ((devices (operating-system-mapped-devices os))
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(file-systems (operating-system-file-systems os)))
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(filter (lambda (md)
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(let ((user (mapped-device-user md file-systems)))
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(and user (file-system-needed-for-boot? user))))
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devices)))
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(define (device-mapping-services os)
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"Return the list of device-mapping services for OS as a list."
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(map (lambda (md)
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(let* ((source (mapped-device-source md))
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(target (mapped-device-target md))
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(type (mapped-device-type md))
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(open (mapped-device-kind-open type))
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(close (mapped-device-kind-close type)))
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(device-mapping-service target
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(open source target)
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(close source target))))
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(operating-system-user-mapped-devices os)))
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(define (swap-services os)
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"Return the list of swap services for OS."
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(map swap-service (operating-system-swap-devices os)))
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(define* (operating-system-directory-base-entries os #:key container?)
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"Return the basic entries of the 'system' directory of OS for use as the
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value of the SYSTEM-SERVICE-TYPE service."
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(mlet %store-monad ((locale (operating-system-locale-directory os)))
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(if container?
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(return `(("locale" ,locale)))
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(mlet %store-monad
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((kernel -> (operating-system-kernel os))
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(initrd (operating-system-initrd-file os))
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(params (operating-system-parameters-file os)))
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(return `(("kernel" ,kernel)
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("parameters" ,params)
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("initrd" ,initrd)
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("locale" ,locale))))))) ;used by libc
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(define* (essential-services os #:key container?)
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"Return the list of essential services for OS. These are special services
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that implement part of what's declared in OS are responsible for low-level
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bookkeeping. CONTAINER? determines whether to return the list of services for
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a container or that of a \"bare metal\" system."
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(define known-fs
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(map file-system-mount-point (operating-system-file-systems os)))
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(let* ((mappings (device-mapping-services os))
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(root-fs (root-file-system-service))
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(other-fs (other-file-system-services os))
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(unmount (user-unmount-service known-fs))
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(swaps (swap-services os))
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(procs (user-processes-service
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(map service-parameters other-fs)))
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(host-name (host-name-service (operating-system-host-name os)))
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(entries (operating-system-directory-base-entries
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os #:container? container?)))
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(cons* (service system-service-type entries)
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%boot-service
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;; %SHEPHERD-ROOT-SERVICE must come first so that the gexp that
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;; execs shepherd comes last in the boot script (XXX). Likewise,
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;; the cleanup service must come last so that its gexp runs before
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;; activation code.
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%shepherd-root-service
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%activation-service
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(service cleanup-service-type #f)
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(pam-root-service (operating-system-pam-services os))
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(account-service (append (operating-system-accounts os)
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(operating-system-groups os))
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(operating-system-skeletons os))
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(operating-system-etc-service os)
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(service fstab-service-type '())
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(session-environment-service
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(operating-system-environment-variables os))
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host-name procs root-fs unmount
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(service setuid-program-service-type
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(operating-system-setuid-programs os))
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(service profile-service-type
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(operating-system-packages os))
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(append other-fs mappings swaps
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;; Add the firmware service, unless we are building for a
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;; container.
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(if container?
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'()
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(list %linux-bare-metal-service
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(service firmware-service-type
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(operating-system-firmware os))))))))
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(define* (operating-system-services os #:key container?)
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"Return all the services of OS, including \"internal\" services that do not
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explicitly appear in OS."
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(append (operating-system-user-services os)
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(essential-services os #:container? container?)))
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;;;
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;;; /etc.
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;;;
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(define %base-firmware
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;; Firmware usable by default.
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(list ath9k-htc-firmware))
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(define %base-packages
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;; Default set of packages globally visible. It should include anything
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;; required for basic administrator tasks.
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(cons* procps psmisc which less zile nano
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lsof ;for Guix's 'list-runtime-roots'
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pciutils usbutils
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util-linux inetutils isc-dhcp
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;; wireless-tools is deprecated in favor of iw, but it's still what
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;; many people are familiar with, so keep it around.
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iw wireless-tools
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net-tools ; XXX: remove when Inetutils suffices
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man-db
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;; The 'sudo' command is already in %SETUID-PROGRAMS, but we also
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;; want the other commands and the man pages (notably because
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;; auto-completion in Emacs shell relies on man pages.)
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sudo
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;; Get 'insmod' & co. from kmod, not module-init-tools, since udev
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;; already depends on it anyway.
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kmod eudev
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e2fsprogs kbd
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bash-completion
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;; The packages below are also in %FINAL-INPUTS, so take them from
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;; there to avoid duplication.
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(map canonical-package
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(list guile-2.0 bash coreutils findutils grep sed
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diffutils patch gawk tar gzip bzip2 xz lzip))))
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(define %default-issue
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;; Default contents for /etc/issue.
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"
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This is the GNU system. Welcome.\n")
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(define (local-host-aliases host-name)
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"Return aliases for HOST-NAME, to be used in /etc/hosts."
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(string-append "127.0.0.1 localhost " host-name "\n"
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"::1 localhost " host-name "\n"))
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(define (default-/etc/hosts host-name)
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"Return the default /etc/hosts file."
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(plain-file "hosts" (local-host-aliases host-name)))
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(define (emacs-site-file)
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"Return the Emacs 'site-start.el' file. That file contains the necessary
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settings for 'guix.el' to work out-of-the-box."
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(scheme-file "site-start.el"
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#~(progn
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;; Add the "normal" elisp directory to the search path;
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;; guix.el may be there.
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(add-to-list
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'load-path
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"/run/current-system/profile/share/emacs/site-lisp")
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;; Attempt to load guix.el.
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(require 'guix-init nil t)
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;; Attempt to load geiser.
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(require 'geiser-install nil t))))
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(define (emacs-site-directory)
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"Return the Emacs site directory, aka. /etc/emacs."
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(computed-file "emacs"
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#~(begin
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(mkdir #$output)
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(chdir #$output)
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(symlink #$(emacs-site-file) "site-start.el"))))
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(define* (operating-system-etc-service os)
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"Return a <service> that builds containing the static part of the /etc
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directory."
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(let ((login.defs (plain-file "login.defs" "# Empty for now.\n"))
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(emacs (emacs-site-directory))
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(issue (plain-file "issue" (operating-system-issue os)))
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(nsswitch (plain-file "nsswitch.conf"
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(name-service-switch->string
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(operating-system-name-service-switch os))))
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;; Startup file for POSIX-compliant login shells, which set system-wide
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;; environment variables.
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(profile (mixed-text-file "profile" "\
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# Crucial variables that could be missing in the profiles' 'etc/profile'
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# because they would require combining both profiles.
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# FIXME: See <http://bugs.gnu.org/20255>.
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export MANPATH=$HOME/.guix-profile/share/man:/run/current-system/profile/share/man
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export INFOPATH=$HOME/.guix-profile/share/info:/run/current-system/profile/share/info
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export XDG_DATA_DIRS=$HOME/.guix-profile/share:/run/current-system/profile/share
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export XDG_CONFIG_DIRS=$HOME/.guix-profile/etc/xdg:/run/current-system/profile/etc/xdg
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# Ignore the default value of 'PATH'.
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unset PATH
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# Load the system profile's settings.
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GUIX_PROFILE=/run/current-system/profile \\
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. /run/current-system/profile/etc/profile
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# Prepend setuid programs.
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export PATH=/run/setuid-programs:$PATH
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if [ -f \"$HOME/.guix-profile/etc/profile\" ]
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then
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# Load the user profile's settings.
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GUIX_PROFILE=\"$HOME/.guix-profile\" \\
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. \"$HOME/.guix-profile/etc/profile\"
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else
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# At least define this one so that basic things just work
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# when the user installs their first package.
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export PATH=\"$HOME/.guix-profile/bin:$PATH\"
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fi
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# Allow Aspell to find dictionaries installed in the user profile.
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export ASPELL_CONF=\"dict-dir $HOME/.guix-profile/lib/aspell\"
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# Allow GStreamer-based applications to find plugins.
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export GST_PLUGIN_PATH=\"$HOME/.guix-profile/lib/gstreamer-1.0\"
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if [ -n \"$BASH_VERSION\" -a -f /etc/bashrc ]
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then
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# Load Bash-specific initialization code.
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. /etc/bashrc
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fi
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"))
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(bashrc (plain-file "bashrc" "\
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# Bash-specific initialization.
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# The 'bash-completion' package.
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if [ -f /run/current-system/profile/etc/profile.d/bash_completion.sh ]
|
||
then
|
||
# Bash-completion sources ~/.bash_completion. It installs a dynamic
|
||
# completion loader that searches its own completion files as well
|
||
# as those in ~/.guix-profile and /run/current-system/profile.
|
||
source /run/current-system/profile/etc/profile.d/bash_completion.sh
|
||
fi\n")))
|
||
(etc-service
|
||
`(("services" ,#~(string-append #$net-base "/etc/services"))
|
||
("protocols" ,#~(string-append #$net-base "/etc/protocols"))
|
||
("rpc" ,#~(string-append #$net-base "/etc/rpc"))
|
||
("emacs" ,#~#$emacs)
|
||
("login.defs" ,#~#$login.defs)
|
||
("issue" ,#~#$issue)
|
||
("nsswitch.conf" ,#~#$nsswitch)
|
||
("profile" ,#~#$profile)
|
||
("bashrc" ,#~#$bashrc)
|
||
("hosts" ,#~#$(or (operating-system-hosts-file os)
|
||
(default-/etc/hosts (operating-system-host-name os))))
|
||
("localtime" ,#~(string-append #$tzdata "/share/zoneinfo/"
|
||
#$(operating-system-timezone os)))
|
||
("sudoers" ,(operating-system-sudoers-file os))))))
|
||
|
||
(define %root-account
|
||
;; Default root account.
|
||
(user-account
|
||
(name "root")
|
||
(password "")
|
||
(uid 0) (group "root")
|
||
(comment "System administrator")
|
||
(home-directory "/root")))
|
||
|
||
(define (operating-system-accounts os)
|
||
"Return the user accounts for OS, including an obligatory 'root' account,
|
||
and excluding accounts requested by services."
|
||
;; Make sure there's a root account.
|
||
(if (find (lambda (user)
|
||
(and=> (user-account-uid user) zero?))
|
||
(operating-system-users os))
|
||
(operating-system-users os)
|
||
(cons %root-account (operating-system-users os))))
|
||
|
||
(define (maybe-string->file file-name thing)
|
||
"If THING is a string, return a <plain-file> with THING as its content.
|
||
Otherwise just return THING.
|
||
|
||
This is for backward-compatibility of fields that used to be strings and are
|
||
now file-like objects.."
|
||
(match thing
|
||
((? string?)
|
||
(warning (_ "using a string for file '~a' is deprecated; \
|
||
use 'plain-file' instead~%")
|
||
file-name)
|
||
(plain-file file-name thing))
|
||
(x
|
||
x)))
|
||
|
||
(define (maybe-file->monadic file-name thing)
|
||
"If THING is a value in %STORE-MONAD, return it as is; otherwise return
|
||
THING in the %STORE-MONAD.
|
||
|
||
This is for backward-compatibility of fields that used to be monadic values
|
||
and are now file-like objects."
|
||
(with-monad %store-monad
|
||
(match thing
|
||
((? procedure?)
|
||
(warning (_ "using a monadic value for '~a' is deprecated; \
|
||
use 'plain-file' instead~%")
|
||
file-name)
|
||
thing)
|
||
(x
|
||
(return x)))))
|
||
|
||
(define (operating-system-etc-directory os)
|
||
"Return that static part of the /etc directory of OS."
|
||
(etc-directory
|
||
(fold-services (operating-system-services os)
|
||
#:target-type etc-service-type)))
|
||
|
||
(define (operating-system-environment-variables os)
|
||
"Return the environment variables of OS for
|
||
@var{session-environment-service-type}, to be used in @file{/etc/environment}."
|
||
`(("LANG" . ,(operating-system-locale os))
|
||
("TZ" . ,(operating-system-timezone os))
|
||
("TZDIR" . ,#~(string-append #$tzdata "/share/zoneinfo"))
|
||
;; Tell 'modprobe' & co. where to look for modules.
|
||
("LINUX_MODULE_DIRECTORY" . "/run/booted-system/kernel/lib/modules")
|
||
;; These variables are honored by OpenSSL (libssl) and Git.
|
||
("SSL_CERT_DIR" . "/etc/ssl/certs")
|
||
("SSL_CERT_FILE" . "/etc/ssl/certs/ca-certificates.crt")
|
||
("GIT_SSL_CAINFO" . "/etc/ssl/certs/ca-certificates.crt")
|
||
;; Append the directory of 'site-start.el' to the search path.
|
||
("EMACSLOADPATH" . ":/etc/emacs")
|
||
;; By default, applications that use D-Bus, such as Emacs, abort at startup
|
||
;; when /etc/machine-id is missing. Make sure these warnings are non-fatal.
|
||
("DBUS_FATAL_WARNINGS" . "0")))
|
||
|
||
(define %setuid-programs
|
||
;; Default set of setuid-root programs.
|
||
(let ((shadow (@ (gnu packages admin) shadow)))
|
||
(list #~(string-append #$shadow "/bin/passwd")
|
||
#~(string-append #$shadow "/bin/su")
|
||
#~(string-append #$inetutils "/bin/ping")
|
||
#~(string-append #$inetutils "/bin/ping6")
|
||
#~(string-append #$sudo "/bin/sudo")
|
||
#~(string-append #$fuse "/bin/fusermount"))))
|
||
|
||
(define %sudoers-specification
|
||
;; Default /etc/sudoers contents: 'root' and all members of the 'wheel'
|
||
;; group can do anything. See
|
||
;; <http://www.sudo.ws/sudo/man/1.8.10/sudoers.man.html>.
|
||
;; TODO: Add a declarative API.
|
||
(plain-file "sudoers" "\
|
||
root ALL=(ALL) ALL
|
||
%wheel ALL=(ALL) ALL\n"))
|
||
|
||
(define* (operating-system-activation-script os #:key container?)
|
||
"Return the activation script for OS---i.e., the code that \"activates\" the
|
||
stateful part of OS, including user accounts and groups, special directories,
|
||
etc."
|
||
(let* ((services (operating-system-services os #:container? container?))
|
||
(activation (fold-services services
|
||
#:target-type activation-service-type)))
|
||
(activation-service->script activation)))
|
||
|
||
(define* (operating-system-boot-script os #:key container?)
|
||
"Return the boot script for OS---i.e., the code started by the initrd once
|
||
we're running in the final root. When CONTAINER? is true, skip all
|
||
hardware-related operations as necessary when booting a Linux container."
|
||
(let* ((services (operating-system-services os #:container? container?))
|
||
(boot (fold-services services #:target-type boot-service-type)))
|
||
;; BOOT is the script as a monadic value.
|
||
(service-parameters boot)))
|
||
|
||
(define* (operating-system-derivation os #:key container?)
|
||
"Return a derivation that builds OS."
|
||
(let* ((services (operating-system-services os #:container? container?))
|
||
(system (fold-services services)))
|
||
;; SYSTEM contains the derivation as a monadic value.
|
||
(service-parameters system)))
|
||
|
||
(define* (operating-system-profile os #:key container?)
|
||
"Return a derivation that builds the system profile of OS."
|
||
(mlet* %store-monad
|
||
((services -> (operating-system-services os #:container? container?))
|
||
(profile (fold-services services
|
||
#:target-type profile-service-type)))
|
||
(match profile
|
||
(("profile" profile)
|
||
(return profile)))))
|
||
|
||
(define (operating-system-root-file-system os)
|
||
"Return the root file system of OS."
|
||
(find (match-lambda
|
||
(($ <file-system> _ _ "/") #t)
|
||
(_ #f))
|
||
(operating-system-file-systems os)))
|
||
|
||
(define (operating-system-initrd-file os)
|
||
"Return a gexp denoting the initrd file of OS."
|
||
(define boot-file-systems
|
||
(filter file-system-needed-for-boot?
|
||
(operating-system-file-systems os)))
|
||
|
||
(define mapped-devices
|
||
(operating-system-boot-mapped-devices os))
|
||
|
||
(define make-initrd
|
||
(operating-system-initrd os))
|
||
|
||
(mlet %store-monad ((initrd (make-initrd boot-file-systems
|
||
#:linux (operating-system-kernel os)
|
||
#:mapped-devices mapped-devices)))
|
||
(return #~(string-append #$initrd "/initrd"))))
|
||
|
||
(define (operating-system-locale-directory os)
|
||
"Return the directory containing the locales compiled for the definitions
|
||
listed in OS. The C library expects to find it under
|
||
/run/current-system/locale."
|
||
;; While we're at it, check whether the locale of OS is defined.
|
||
(unless (member (operating-system-locale os)
|
||
(map locale-definition-name
|
||
(operating-system-locale-definitions os)))
|
||
(raise (condition
|
||
(&message (message "system locale lacks a definition")))))
|
||
|
||
(locale-directory (operating-system-locale-definitions os)
|
||
#:libcs (operating-system-locale-libcs os)))
|
||
|
||
(define (kernel->grub-label kernel)
|
||
"Return a label for the GRUB menu entry that boots KERNEL."
|
||
(string-append "GNU with "
|
||
(string-titlecase (package-name kernel)) " "
|
||
(package-version kernel)
|
||
" (alpha)"))
|
||
|
||
(define (store-file-system file-systems)
|
||
"Return the file system object among FILE-SYSTEMS that contains the store."
|
||
(match (filter (lambda (fs)
|
||
(and (file-system-mount? fs)
|
||
(not (memq 'bind-mount (file-system-flags fs)))
|
||
(string-prefix? (file-system-mount-point fs)
|
||
(%store-prefix))))
|
||
file-systems)
|
||
((and candidates (head . tail))
|
||
(reduce (lambda (fs1 fs2)
|
||
(if (> (string-length (file-system-mount-point fs1))
|
||
(string-length (file-system-mount-point fs2)))
|
||
fs1
|
||
fs2))
|
||
head
|
||
candidates))))
|
||
|
||
(define (operating-system-store-file-system os)
|
||
"Return the file system that contains the store of OS."
|
||
(store-file-system (operating-system-file-systems os)))
|
||
|
||
(define* (operating-system-grub.cfg os #:optional (old-entries '()))
|
||
"Return the GRUB configuration file for OS. Use OLD-ENTRIES to populate the
|
||
\"old entries\" menu."
|
||
(mlet* %store-monad
|
||
((system (operating-system-derivation os))
|
||
(root-fs -> (operating-system-root-file-system os))
|
||
(store-fs -> (operating-system-store-file-system os))
|
||
(kernel -> (operating-system-kernel os))
|
||
(root-device -> (if (eq? 'uuid (file-system-title root-fs))
|
||
(uuid->string (file-system-device root-fs))
|
||
(file-system-device root-fs)))
|
||
(entries -> (list (menu-entry
|
||
(label (kernel->grub-label kernel))
|
||
(linux kernel)
|
||
(linux-arguments
|
||
(cons* (string-append "--root=" root-device)
|
||
#~(string-append "--system=" #$system)
|
||
#~(string-append "--load=" #$system
|
||
"/boot")
|
||
(operating-system-kernel-arguments os)))
|
||
(initrd #~(string-append #$system "/initrd"))))))
|
||
(grub-configuration-file (operating-system-bootloader os)
|
||
store-fs entries
|
||
#:old-entries old-entries)))
|
||
|
||
(define (operating-system-parameters-file os)
|
||
"Return a file that describes the boot parameters of OS. The primary use of
|
||
this file is the reconstruction of GRUB menu entries for old configurations."
|
||
(mlet %store-monad ((initrd (operating-system-initrd-file os))
|
||
(root -> (operating-system-root-file-system os))
|
||
(label -> (kernel->grub-label
|
||
(operating-system-kernel os))))
|
||
(gexp->file "parameters"
|
||
#~(boot-parameters (version 0)
|
||
(label #$label)
|
||
(root-device #$(file-system-device root))
|
||
(kernel #$(operating-system-kernel os))
|
||
(kernel-arguments
|
||
#$(operating-system-kernel-arguments os))
|
||
(initrd #$initrd)))))
|
||
|
||
|
||
;;;
|
||
;;; Boot parameters
|
||
;;;
|
||
|
||
(define-record-type* <boot-parameters>
|
||
boot-parameters make-boot-parameters boot-parameters?
|
||
(label boot-parameters-label)
|
||
(root-device boot-parameters-root-device)
|
||
(kernel boot-parameters-kernel)
|
||
(kernel-arguments boot-parameters-kernel-arguments))
|
||
|
||
(define (read-boot-parameters port)
|
||
"Read boot parameters from PORT and return the corresponding
|
||
<boot-parameters> object or #f if the format is unrecognized."
|
||
(match (read port)
|
||
(('boot-parameters ('version 0)
|
||
('label label) ('root-device root)
|
||
('kernel linux)
|
||
rest ...)
|
||
(boot-parameters
|
||
(label label)
|
||
(root-device root)
|
||
(kernel linux)
|
||
(kernel-arguments
|
||
(match (assq 'kernel-arguments rest)
|
||
((_ args) args)
|
||
(#f '()))))) ;the old format
|
||
(x ;unsupported format
|
||
(warning (_ "unrecognized boot parameters for '~a'~%")
|
||
system)
|
||
#f)))
|
||
|
||
;;; system.scm ends here
|