From 55cbd67645fced42905b3bcff345116de7365049 Mon Sep 17 00:00:00 2001 From: Alex Griffin Date: Wed, 9 Feb 2022 23:09:52 -0600 Subject: [PATCH 4/5] system: Add wsl module. * gnu/system/wsl.scm: New file. * gnu/local.mk (GNU_SYSTEM_MODULES): Add it. --- gnu/local.mk | 2 + gnu/system/wsl.scm | 148 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 150 insertions(+) create mode 100644 gnu/system/wsl.scm diff --git a/gnu/local.mk b/gnu/local.mk index 198c8f64a6..fecde5b4dd 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -49,6 +49,7 @@ # Copyright © 2021 Simon Tournier # Copyright © 2022 Daniel Meißner # Copyright © 2022 Remco van 't Veer +# Copyright © 2022 Alex Griffin # # This file is part of GNU Guix. # @@ -700,6 +701,7 @@ GNU_SYSTEM_MODULES = \ %D%/system/shadow.scm \ %D%/system/uuid.scm \ %D%/system/vm.scm \ + %D%/system/wsl.scm \ \ %D%/system/images/hurd.scm \ %D%/system/images/novena.scm \ diff --git a/gnu/system/wsl.scm b/gnu/system/wsl.scm new file mode 100644 index 0000000000..63c71926a7 --- /dev/null +++ b/gnu/system/wsl.scm @@ -0,0 +1,148 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2022 Alex Griffin +;;; +;;; 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 . + +(define-module (gnu system wsl) + #:use-module (gnu bootloader) + #:use-module (gnu packages admin) + #:use-module (gnu packages base) + #:use-module (gnu packages bash) + #:use-module (gnu packages guile) + #:use-module (gnu packages linux) + #:use-module (gnu services) + #:use-module (gnu services base) + #:use-module (gnu system) + #:use-module (gnu system shadow) + #:use-module (guix build-system trivial) + #:use-module (guix gexp) + #:use-module (guix packages) + #:export (wsl-boot-program + wsl-os)) + +(define (wsl-boot-program user) + "Program that runs the system boot script, then starts a login shell as USER." + (program-file + "wsl-boot-program" + #~(begin + (unless (file-exists? "/run/current-system") + (let ((shepherd-socket "/var/run/shepherd/socket")) + ;; Clean up this file so we can wait for it later. + (when (file-exists? shepherd-socket) + (delete-file shepherd-socket)) + + ;; Child process boots the system and is replaced by shepherd. + (when (zero? (primitive-fork)) + (let* ((system-generation (readlink "/var/guix/profiles/system")) + (system (readlink + (string-append (if (absolute-file-name? system-generation) + "" + "/var/guix/profiles/") + system-generation)))) + (setenv "GUIX_NEW_SYSTEM" system) + (execl #$(file-append guile-3.0 "/bin/guile") + "guile" + "--no-auto-compile" + (string-append system "/boot")))) + + ;; Parent process waits for shepherd before continuing. + (while (not (file-exists? shepherd-socket)) + (sleep 1)))) + + (let* ((pw (getpw #$user)) + (shell (passwd:shell pw)) + (sudo #+(file-append sudo "/bin/sudo")) + (args (cdr (command-line)))) + ;; Save the value of $PATH set by WSL. Useful for finding + ;; Windows binaries to run with WSL's binfmt interop. + (setenv "WSLPATH" (getenv "PATH")) + + ;; Start login shell as user. + (apply execl sudo "sudo" + "--preserve-env=WSLPATH" + "-u" #$user + "--" + shell "-l" args))))) + +(define dummy-package + (package + (name "dummy") + (version "0") + (source #f) + (build-system trivial-build-system) + (arguments + `(#:modules ((guix build utils)) + #:target #f + #:builder (begin + (use-modules (guix build utils)) + (let* ((out (assoc-ref %outputs "out")) + (dummy (string-append out "/dummy"))) + (mkdir-p out) + (call-with-output-file dummy + (const #t)) + #t)))) + (home-page #f) + (synopsis #f) + (description #f) + (license #f))) + +(define dummy-bootloader + (bootloader + (name 'dummy-bootloader) + (package dummy-package) + (configuration-file "/dev/null") + (configuration-file-generator + (lambda (. _rest) + (plain-file "dummy-bootloader" ""))) + (installer #~(const #t)))) + +(define dummy-kernel dummy-package) + +(define (dummy-initrd . _rest) + (plain-file "dummy-initrd" "")) + +(define-public wsl-os + (operating-system + (host-name "gnu") + (timezone "Etc/UTC") + + (bootloader + (bootloader-configuration + (bootloader dummy-bootloader))) + + (kernel dummy-kernel) + (initrd dummy-initrd) + (initrd-modules '()) + (firmware '()) + + (file-systems '()) + + (users (cons* (user-account + (name "guest") + (group "users") + (supplementary-groups '("wheel")) ; allow use of sudo + (password "") + (comment "Guest of GNU")) + (user-account + (inherit %root-account) + (shell (wsl-boot-program "guest"))) + %base-user-accounts)) + + (services (list (service guix-service-type) + (service special-files-service-type + `(("/bin/sh" ,(file-append bash "/bin/bash")) + ("/bin/mount" ,(file-append util-linux "/bin/mount")) + ("/usr/bin/env" ,(file-append coreutils "/bin/env")))))))) -- 2.34.0