b2a5fa594e
* gnu/system/install.scm (self-contained-tarball): Pass "./root/.guix-profile", "./var/guix", and "./gnu" to 'tar' command instead of ".".
351 lines
13 KiB
Scheme
351 lines
13 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu system install)
|
||
#:use-module (gnu)
|
||
#:use-module (guix gexp)
|
||
#:use-module (guix store)
|
||
#:use-module (guix monads)
|
||
#:use-module ((guix store) #:select (%store-prefix))
|
||
#:use-module (guix profiles)
|
||
#:use-module (gnu packages admin)
|
||
#:use-module (gnu packages bash)
|
||
#:use-module (gnu packages linux)
|
||
#:use-module (gnu packages cryptsetup)
|
||
#:use-module (gnu packages package-management)
|
||
#:use-module (gnu packages disk)
|
||
#:use-module (gnu packages grub)
|
||
#:use-module (gnu packages texinfo)
|
||
#:use-module (gnu packages compression)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (srfi srfi-26)
|
||
#:export (self-contained-tarball
|
||
installation-os))
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; This module provides an 'operating-system' definition for use on images
|
||
;;; for USB sticks etc., for the installation of the GNU system.
|
||
;;;
|
||
;;; Code:
|
||
|
||
|
||
(define* (self-contained-tarball #:key (guix guix))
|
||
"Return a self-contained tarball containing a store initialized with the
|
||
closure of GUIX. The tarball contains /gnu/store, /var/guix, and a profile
|
||
under /root/.guix-profile where GUIX is installed."
|
||
(mlet %store-monad ((profile (profile-derivation
|
||
(manifest
|
||
(list (package->manifest-entry guix))))))
|
||
(define build
|
||
#~(begin
|
||
(use-modules (guix build utils)
|
||
(gnu build install))
|
||
|
||
(define %root "root")
|
||
|
||
(setenv "PATH"
|
||
(string-append #$guix "/sbin:" #$tar "/bin:" #$xz "/bin"))
|
||
|
||
(populate-single-profile-directory %root
|
||
#:profile #$profile
|
||
#:closure "profile")
|
||
|
||
;; Create the tarball. Use GNU format so there's no file name
|
||
;; length limitation.
|
||
(with-directory-excursion %root
|
||
(zero? (system* "tar" "--xz" "--format=gnu"
|
||
"--owner=root:0" "--group=root:0"
|
||
"-cvf" #$output
|
||
;; Avoid adding /, /var, or /root to the tarball,
|
||
;; so that the ownership and permissions of those
|
||
;; directories will not be overwritten when
|
||
;; extracting the archive.
|
||
"./root/.guix-profile"
|
||
"./var/guix"
|
||
"./gnu")))))
|
||
|
||
(gexp->derivation "guix-tarball.tar.xz" build
|
||
#:references-graphs `(("profile" ,profile))
|
||
#:modules '((guix build utils)
|
||
(guix build store-copy)
|
||
(gnu build install)))))
|
||
|
||
|
||
(define (log-to-info)
|
||
"Return a script that spawns the Info reader on the right section of the
|
||
manual."
|
||
(gexp->script "log-to-info"
|
||
#~(begin
|
||
;; 'gunzip' is needed to decompress the doc.
|
||
(setenv "PATH" (string-append #$gzip "/bin"))
|
||
|
||
(execl (string-append #$texinfo-4 "/bin/info") "info"
|
||
"-d" "/run/current-system/profile/share/info"
|
||
"-f" (string-append #$guix "/share/info/guix.info")
|
||
"-n" "System Installation"))))
|
||
|
||
(define %backing-directory
|
||
;; Sub-directory used as the backing store for copy-on-write.
|
||
"/tmp/guix-inst")
|
||
|
||
(define (make-cow-store target)
|
||
"Return a gexp that makes the store copy-on-write, using TARGET as the
|
||
backing store. This is useful when TARGET is on a hard disk, whereas the
|
||
current store is on a RAM disk."
|
||
(define (unionfs read-only read-write mount-point)
|
||
;; Make MOUNT-POINT the union of READ-ONLY and READ-WRITE.
|
||
|
||
;; Note: in the command below, READ-WRITE appears before READ-ONLY so that
|
||
;; it is considered a "higher-level branch", as per unionfs-fuse(8),
|
||
;; thereby allowing files existing on READ-ONLY to be copied over to
|
||
;; READ-WRITE.
|
||
#~(fork+exec-command
|
||
(list (string-append #$unionfs-fuse "/bin/unionfs")
|
||
"-o"
|
||
"cow,allow_other,use_ino,max_files=65536,nonempty"
|
||
(string-append #$read-write "=RW:" #$read-only "=RO")
|
||
#$mount-point)))
|
||
|
||
(define (set-store-permissions directory)
|
||
;; Set the right perms on DIRECTORY to use it as the store.
|
||
#~(begin
|
||
(chown #$directory 0 30000) ;use the fixed 'guixbuild' GID
|
||
(chmod #$directory #o1775)))
|
||
|
||
#~(begin
|
||
(unless (file-exists? "/.ro-store")
|
||
(mkdir "/.ro-store")
|
||
(mount #$(%store-prefix) "/.ro-store" "none"
|
||
(logior MS_BIND MS_RDONLY)))
|
||
|
||
(let ((rw-dir (string-append target #$%backing-directory)))
|
||
(mkdir-p rw-dir)
|
||
(mkdir-p "/.rw-store")
|
||
#$(set-store-permissions #~rw-dir)
|
||
#$(set-store-permissions "/.rw-store")
|
||
|
||
;; Mount the union, then atomically make it the store.
|
||
(and #$(unionfs "/.ro-store" #~rw-dir "/.rw-store")
|
||
(begin
|
||
(sleep 1) ;XXX: wait for unionfs to be ready
|
||
(mount "/.rw-store" #$(%store-prefix) "" MS_MOVE)
|
||
(rmdir "/.rw-store"))))))
|
||
|
||
(define (cow-store-service)
|
||
"Return a service that makes the store copy-on-write, such that writes go to
|
||
the user's target storage device rather than on the RAM disk."
|
||
;; See <http://bugs.gnu.org/18061> for the initial report.
|
||
(with-monad %store-monad
|
||
(return (service
|
||
(requirement '(root-file-system user-processes))
|
||
(provision '(cow-store))
|
||
(documentation
|
||
"Make the store copy-on-write, with writes going to \
|
||
the given target.")
|
||
|
||
;; This is meant to be explicitly started by the user.
|
||
(auto-start? #f)
|
||
|
||
(start #~(case-lambda
|
||
((target)
|
||
#$(make-cow-store #~target)
|
||
target)
|
||
(else
|
||
;; Do nothing, and mark the service as stopped.
|
||
#f)))
|
||
(stop #~(lambda (target)
|
||
;; Delete the temporary directory, but leave everything
|
||
;; mounted as there may still be processes using it
|
||
;; since 'user-processes' doesn't depend on us. The
|
||
;; 'user-unmount' service will unmount TARGET
|
||
;; eventually.
|
||
(delete-file-recursively
|
||
(string-append target #$%backing-directory))))))))
|
||
|
||
(define (configuration-template-service)
|
||
"Return a dummy service whose purpose is to install an operating system
|
||
configuration template file in the installation system."
|
||
|
||
(define search
|
||
(cut search-path %load-path <>))
|
||
(define templates
|
||
(map (match-lambda
|
||
((file '-> target)
|
||
(list (local-file (search file))
|
||
(string-append "/etc/configuration/" target))))
|
||
'(("gnu/system/examples/bare-bones.tmpl" -> "bare-bones.scm")
|
||
("gnu/system/examples/desktop.tmpl" -> "desktop.scm"))))
|
||
|
||
(with-monad %store-monad
|
||
(return (service
|
||
(requirement '(root-file-system))
|
||
(provision '(os-config-template))
|
||
(documentation
|
||
"This dummy service installs an OS configuration template.")
|
||
(start #~(const #t))
|
||
(stop #~(const #f))
|
||
(activate
|
||
#~(begin
|
||
(use-modules (ice-9 match)
|
||
(guix build utils))
|
||
|
||
(mkdir-p "/etc/configuration")
|
||
(for-each (match-lambda
|
||
((file target)
|
||
(unless (file-exists? target)
|
||
(copy-file file target))))
|
||
'#$templates)))))))
|
||
|
||
(define %nscd-minimal-caches
|
||
;; Minimal in-memory caching policy for nscd.
|
||
(list (nscd-cache (database 'hosts)
|
||
(positive-time-to-live (* 3600 12))
|
||
(negative-time-to-live 20)
|
||
(persistent? #f)
|
||
(max-database-size (* 5 (expt 2 20)))))) ;5 MiB
|
||
|
||
(define (installation-services)
|
||
"Return the list services for the installation image."
|
||
(let ((motd (text-file "motd" "
|
||
Welcome to the installation of the Guix System Distribution!
|
||
|
||
There is NO WARRANTY, to the extent permitted by law. In particular, you may
|
||
LOSE ALL YOUR DATA as a side effect of the installation process. Furthermore,
|
||
it is alpha software, so it may BREAK IN UNEXPECTED WAYS.
|
||
|
||
You have been warned. Thanks for being so brave.
|
||
")))
|
||
(define (normal-tty tty)
|
||
(mingetty-service tty
|
||
#:motd motd
|
||
#:auto-login "root"
|
||
#:login-pause? #t))
|
||
|
||
(list (mingetty-service "tty1"
|
||
#:motd motd
|
||
#:auto-login "root")
|
||
|
||
;; Documentation. The manual is in UTF-8, but
|
||
;; 'console-font-service' sets up Unicode support and loads a font
|
||
;; with all the useful glyphs like em dash and quotation marks.
|
||
(mingetty-service "tty2"
|
||
#:motd motd
|
||
#:auto-login "guest"
|
||
#:login-program (log-to-info))
|
||
|
||
;; Documentation add-on.
|
||
(configuration-template-service)
|
||
|
||
;; A bunch of 'root' ttys.
|
||
(normal-tty "tty3")
|
||
(normal-tty "tty4")
|
||
(normal-tty "tty5")
|
||
(normal-tty "tty6")
|
||
|
||
;; The usual services.
|
||
(syslog-service)
|
||
|
||
;; The build daemon. Register the hydra.gnu.org key as trusted.
|
||
;; This allows the installation process to use substitutes by
|
||
;; default.
|
||
(guix-service #:authorize-hydra-key? #t)
|
||
|
||
;; Start udev so that useful device nodes are available.
|
||
(udev-service)
|
||
|
||
;; Add the 'cow-store' service, which users have to start manually
|
||
;; since it takes the installation directory as an argument.
|
||
(cow-store-service)
|
||
|
||
;; Install Unicode support and a suitable font.
|
||
(console-font-service "tty1")
|
||
(console-font-service "tty2")
|
||
(console-font-service "tty3")
|
||
(console-font-service "tty4")
|
||
(console-font-service "tty5")
|
||
(console-font-service "tty6")
|
||
|
||
;; Since this is running on a USB stick with a unionfs as the root
|
||
;; file system, use an appropriate cache configuration.
|
||
(nscd-service (nscd-configuration
|
||
(caches %nscd-minimal-caches))))))
|
||
|
||
(define %issue
|
||
;; Greeting.
|
||
"
|
||
This is an installation image of the GNU system. Welcome.
|
||
|
||
Use Alt-F2 for documentation.
|
||
")
|
||
|
||
(define installation-os
|
||
;; The operating system used on installation images for USB sticks etc.
|
||
(operating-system
|
||
(host-name "gnu")
|
||
(timezone "Europe/Paris")
|
||
(locale "en_US.utf8")
|
||
(bootloader (grub-configuration
|
||
(device "/dev/sda")))
|
||
(file-systems
|
||
;; Note: the disk image build code overrides this root file system with
|
||
;; the appropriate one.
|
||
(cons (file-system
|
||
(mount-point "/")
|
||
(device "gnu-disk-image")
|
||
(type "ext4"))
|
||
%base-file-systems))
|
||
|
||
(users (list (user-account
|
||
(name "guest")
|
||
(group "users")
|
||
(supplementary-groups '("wheel")) ; allow use of sudo
|
||
(password "")
|
||
(comment "Guest of GNU")
|
||
(home-directory "/home/guest"))))
|
||
|
||
(issue %issue)
|
||
|
||
(services (installation-services))
|
||
|
||
;; We don't need setuid programs so pass the empty list so we don't pull
|
||
;; additional programs here.
|
||
(setuid-programs '())
|
||
|
||
(pam-services
|
||
;; Explicitly allow for empty passwords.
|
||
(base-pam-services #:allow-empty-passwords? #t))
|
||
|
||
(packages (cons* texinfo-4 ;for the standalone Info reader
|
||
parted ddrescue
|
||
grub ;mostly so xrefs to its manual work
|
||
cryptsetup
|
||
wireless-tools iw wpa-supplicant-light
|
||
;; XXX: We used to have GNU fdisk here, but as of version
|
||
;; 2.0.0a, that pulls Guile 1.8, which takes unreasonable
|
||
;; space; furthermore util-linux's fdisk is already
|
||
;; available here, so we keep that.
|
||
bash-completion
|
||
%base-packages))))
|
||
|
||
;; Return it here so 'guix system' can consume it directly.
|
||
installation-os
|
||
|
||
;;; install.scm ends here
|