Mirror of GNU Guix
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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu system)
#:use-module (guix store)
#:use-module (guix monads)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (guix packages)
#:use-module (guix derivations)
#:use-module (gnu packages base)
#:use-module (gnu packages bash)
#:use-module (gnu packages admin)
#:use-module (gnu packages package-management)
#:use-module (gnu services)
#:use-module (gnu services dmd)
#:use-module (gnu services base)
#:use-module (gnu system grub)
#:use-module (gnu system shadow)
#:use-module (gnu system linux)
#:use-module (gnu system linux-initrd)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:export (operating-system
operating-system?
operating-system-services
operating-system-packages
operating-system-bootloader-entries
operating-system-host-name
operating-system-kernel
operating-system-initrd
operating-system-users
operating-system-groups
operating-system-packages
operating-system-timezone
operating-system-locale
operating-system-services
operating-system-file-systems
operating-system-derivation
operating-system-profile
<file-system>
file-system
file-system?
file-system-device
file-system-mount-point
file-system-type
file-system-needed-for-boot?
file-system-flags
file-system-options))
;;; Commentary:
;;;
;;; This module supports whole-system configuration.
;;;
;;; Code:
;; System-wide configuration.
;; TODO: Add per-field docstrings/stexi.
(define-record-type* <operating-system> operating-system
make-operating-system
operating-system?
(kernel operating-system-kernel ; package
(default linux-libre))
(bootloader operating-system-bootloader ; package
(default grub))
(bootloader-entries operating-system-bootloader-entries ; list
(default '()))
(initrd operating-system-initrd ; (list fs) -> M derivation
(default qemu-initrd))
(host-name operating-system-host-name) ; string
(file-systems operating-system-file-systems ; list of fs
(default '()))
(users operating-system-users ; list of user accounts
(default '()))
(groups operating-system-groups ; list of user groups
(default (list (user-group
(name "root")
(id 0)))))
(packages operating-system-packages ; list of (PACKAGE OUTPUT...)
(default (list coreutils ; or just PACKAGE
grep
sed
findutils
guile
bash
(@ (gnu packages dmd) dmd)
guix
tzdata)))
(timezone operating-system-timezone) ; string
(locale operating-system-locale) ; string
(services operating-system-services ; list of monadic services
(default %base-services))
(pam-services operating-system-pam-services ; list of PAM services
(default (base-pam-services)))
(setuid-programs operating-system-setuid-programs
(default %setuid-programs)) ; list of string-valued gexps
(sudoers operating-system-sudoers ; /etc/sudoers contents
(default %sudoers-specification)))
;; File system declaration.
(define-record-type* <file-system> file-system
make-file-system
file-system?
(device file-system-device) ; string
(mount-point file-system-mount-point) ; string
(type file-system-type) ; string
(flags file-system-flags ; list of symbols
(default '()))
(options file-system-options ; string or #f
(default #f))
(needed-for-boot? file-system-needed-for-boot? ; Boolean
(default #f))
(check? file-system-check? ; Boolean
(default #t)))
;;;
;;; Derivation.
;;;
(define* (union inputs
#:key (guile (%guile-for-build)) (system (%current-system))
(name "union"))
"Return a derivation that builds the union of INPUTS. INPUTS is a list of
input tuples."
(define builder
#~(begin
(use-modules (guix build union))
(define inputs '#$inputs)
(setvbuf (current-output-port) _IOLBF)
(setvbuf (current-error-port) _IOLBF)
(format #t "building union `~a' with ~a packages...~%"
#$output (length inputs))
(union-build #$output inputs)))
(gexp->derivation name builder
#:system system
#:modules '((guix build union))
#:guile-for-build guile
#:local-build? #t))
(define* (file-union name files)
"Return a derivation that builds a directory containing all of FILES. Each
item in FILES must be a list where the first element is the file name to use
in the new directory, and the second element is a gexp denoting the target
file."
(define builder
#~(begin
(mkdir #$output)
(chdir #$output)
#$@(map (match-lambda
((target source)
#~(symlink #$source #$target)))
files)))
(gexp->derivation name builder))
(define* (etc-directory #:key
(locale "C") (timezone "Europe/Paris")
(accounts '())
(groups '())
(pam-services '())
(profile "/var/run/current-system/profile")
(sudoers ""))
"Return a derivation that builds the static part of the /etc directory."
(mlet* %store-monad
((passwd (passwd-file accounts))
(shadow (passwd-file accounts #:shadow? #t))
(group (group-file groups))
(pam.d (pam-services->directory pam-services))
(sudoers (text-file "sudoers" sudoers))
(login.defs (text-file "login.defs" "# Empty for now.\n"))
(shells (text-file "shells" ; used by xterm and others
"\
/bin/sh
/run/current-system/bin/sh
/run/current-system/bin/bash\n"))
(issue (text-file "issue" "
This is an alpha preview of the GNU system. Welcome.
This image features the GNU Guix package manager, which was used to
build it (http://www.gnu.org/software/guix/). The init system is
GNU dmd (http://www.gnu.org/software/dmd/).
You can log in as 'guest' or 'root' with no password.
"))
;; TODO: Generate bashrc from packages' search-paths.
(bashrc (text-file* "bashrc" "
export PS1='\\u@\\h\\$ '
export LC_ALL=\"" locale "\"
export TZ=\"" timezone "\"
export TZDIR=\"" tzdata "/share/zoneinfo\"
export PATH=$HOME/.guix-profile/bin:" profile "/bin:" profile "/sbin
export PATH=/run/setuid-programs:$PATH
export CPATH=$HOME/.guix-profile/include:" profile "/include
export LIBRARY_PATH=$HOME/.guix-profile/lib:" profile "/lib
alias ls='ls -p --color'
alias ll='ls -l'
")))
(file-union "etc"
`(("services" ,#~(string-append #$net-base "/etc/services"))
("protocols" ,#~(string-append #$net-base "/etc/protocols"))
("rpc" ,#~(string-append #$net-base "/etc/rpc"))
("pam.d" ,#~#$pam.d)
("login.defs" ,#~#$login.defs)
("issue" ,#~#$issue)
("shells" ,#~#$shells)
("profile" ,#~#$bashrc)
("localtime" ,#~(string-append #$tzdata "/share/zoneinfo/"
#$timezone))
("passwd" ,#~#$passwd)
("shadow" ,#~#$shadow)
("group" ,#~#$group)
("sudoers" ,#~#$sudoers)))))
(define (operating-system-profile os)
"Return a derivation that builds the default profile of OS."
;; TODO: Replace with a real profile with a manifest.
(union (operating-system-packages os)
#:name "default-profile"))
(define (operating-system-accounts os)
"Return the user accounts for OS, including an obligatory 'root' account."
(mlet %store-monad ((services (sequence %store-monad
(operating-system-services os))))
(return (cons (user-account
(name "root")
(password "")
(uid 0) (gid 0)
(comment "System administrator")
(home-directory "/root"))
(append (operating-system-users os)
(append-map service-user-accounts
services))))))
(define (operating-system-etc-directory os)
"Return that static part of the /etc directory of OS."
(mlet* %store-monad
((services (sequence %store-monad (operating-system-services os)))
(pam-services ->
;; Services known to PAM.
(delete-duplicates
(append (operating-system-pam-services os)
(append-map service-pam-services services))))
(accounts (operating-system-accounts os))
(profile-drv (operating-system-profile os))
(groups -> (append (operating-system-groups os)
(append-map service-user-groups services))))
(etc-directory #:accounts accounts #:groups groups
#:pam-services pam-services
#:locale (operating-system-locale os)
#:timezone (operating-system-timezone os)
#:sudoers (operating-system-sudoers os)
#:profile profile-drv)))
(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 #$inetutils "/bin/ping")
#~(string-append #$sudo "/bin/sudo"))))
(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.
"root ALL=(ALL) ALL
%wheel ALL=(ALL) ALL\n")
(define (operating-system-boot-script os)
"Return the boot script for OS---i.e., the code started by the initrd once
we're running in the final root."
(define %modules
'((guix build activation)
(guix build utils)))
(mlet* %store-monad
((services (sequence %store-monad (operating-system-services os)))
(etc (operating-system-etc-directory os))
(modules (imported-modules %modules))
(compiled (compiled-modules %modules))
(dmd-conf (dmd-configuration-file services)))
(define setuid-progs
(operating-system-setuid-programs os))
(gexp->file "boot"
#~(begin
(eval-when (expand load eval)
;; Make sure 'use-modules' below succeeds.
(set! %load-path (cons #$modules %load-path))
(set! %load-compiled-path
(cons #$compiled %load-compiled-path)))
(use-modules (guix build activation))
;; Populate /etc.
(activate-etc #$etc)
;; Activate setuid programs.
(activate-setuid-programs (list #$@setuid-progs))
;; Close any remaining open file descriptors to be on the
;; safe side. This must be the very last thing we do,
;; because Guile has internal FDs such as 'sleep_pipe'
;; that need to be alive.
(let loop ((fd 3))
(when (< fd 1024)
(false-if-exception (close-fdes fd))
(loop (+ 1 fd))))
;; Start dmd.
(execl (string-append #$dmd "/bin/dmd")
"dmd" "--config" #$dmd-conf)))))
(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-derivation os)
"Return a derivation that builds OS."
(define boot-file-systems
(filter (match-lambda
(($ <file-system> device "/")
#t)
(($ <file-system> device mount-point type flags options boot?)
boot?))
(operating-system-file-systems os)))
(mlet* %store-monad
((profile (operating-system-profile os))
(etc (operating-system-etc-directory os))
(services (sequence %store-monad (operating-system-services os)))
(boot (operating-system-boot-script os))
(kernel -> (operating-system-kernel os))
(initrd ((operating-system-initrd os) boot-file-systems))
(initrd-file -> #~(string-append #$initrd "/initrd"))
(root-fs -> (operating-system-root-file-system os))
(entries -> (list (menu-entry
(label (string-append
"GNU system with "
(package-full-name kernel)
" (technology preview)"))
(linux kernel)
(linux-arguments
(list (string-append "--root="
(file-system-device root-fs))
#~(string-append "--load=" #$boot)))
(initrd initrd-file))))
(grub.cfg (grub-configuration-file entries)))
(file-union "system"
`(("boot" ,#~#$boot)
("kernel" ,#~#$kernel)
("initrd" ,initrd-file)
("profile" ,#~#$profile)
("grub.cfg" ,#~#$grub.cfg)
("etc" ,#~#$etc)))))
;;; system.scm ends here