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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019, 2021 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 tests singularity)
#:use-module (gnu tests)
#:use-module (gnu system)
#:use-module (gnu system vm)
#:use-module (gnu system shadow)
#:use-module (gnu services)
#:use-module (gnu services docker)
#:use-module (gnu packages bash)
#:use-module (gnu packages guile)
#:use-module (gnu packages linux) ;singularity
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (guix grafts)
#:use-module (guix monads)
#:use-module (guix packages)
#:use-module (guix profiles)
#:use-module (guix scripts pack)
#:export (%test-singularity))
(define %singularity-os
(simple-operating-system
(service singularity-service-type)
(simple-service 'guest-account
account-service-type
(list (user-account (name "guest") (uid 1000) (group "guest"))
(user-group (name "guest") (id 1000))))))
(define (run-singularity-test image)
"Load IMAGE, a Squashfs image, as a Singularity image and run it inside
%SINGULARITY-OS."
(define os
(marionette-operating-system %singularity-os))
(define singularity-exec
#~(begin
(use-modules (ice-9 popen) (rnrs io ports))
(let* ((pipe (open-pipe* OPEN_READ
#$(file-append singularity
"/bin/singularity")
"exec" #$image "/bin/guile"
"-c" "(display \"hello, world\")"))
(str (get-string-all pipe))
(status (close-pipe pipe)))
(and (zero? status)
(string=? str "hello, world")))))
(define test
(with-imported-modules '((gnu build marionette))
#~(begin
(use-modules (srfi srfi-11) (srfi srfi-64)
(gnu build marionette))
(define marionette
(make-marionette (list #$(virtual-machine os))))
(test-runner-current (system-test-runner #$output))
(test-begin "singularity")
(test-assert "singularity exec /bin/guile (as root)"
(marionette-eval '#$singularity-exec
marionette))
(test-equal "singularity exec /bin/guile (unprivileged)"
0
(marionette-eval
`(begin
(use-modules (ice-9 match))
(match (primitive-fork)
(0
(dynamic-wind
(const #f)
(lambda ()
(setgid 1000)
(setuid 1000)
(execl #$(program-file "singularity-exec-test"
#~(exit #$singularity-exec))
"test"))
(lambda ()
(primitive-exit 127))))
(pid
(cdr (waitpid pid)))))
marionette))
(test-equal "singularity run" ;test the entry point
42
(marionette-eval
`(status:exit-val
(system* #$(file-append singularity "/bin/singularity")
"run" #$image "-c" "(exit 42)"))
marionette))
;; FIXME: Singularity 2.x doesn't directly honor
;; /.singularity.d/env/*.sh. Instead, you have to load those files
;; manually, which we don't do. Remove 'test-skip' call once we've
;; switch to Singularity 3.x.
(test-skip 1)
(test-equal "singularity run, with environment"
0
(marionette-eval
;; Check whether GUILE_LOAD_PATH is properly set, allowing us to
;; find the (json) module.
`(status:exit-val
(system* #$(file-append singularity "/bin/singularity")
"--debug" "run" #$image "-c" "(use-modules (json))"))
marionette))
(test-end))))
(gexp->derivation "singularity-test" test))
(define (build-tarball&run-singularity-test)
(mlet* %store-monad
((_ (set-grafting #f))
(guile (set-guile-for-build (default-guile)))
;; 'singularity exec' insists on having /bin/sh in the image.
(profile (profile-derivation (packages->manifest
(list bash-minimal
guile-2.2 guile-json-3))
#:hooks '()
#:locales? #f))
(tarball (squashfs-image "singularity-pack" profile
#:entry-point "bin/guile"
#:symlinks '(("/bin" -> "bin")))))
(run-singularity-test tarball)))
(define %test-singularity
(system-test
(name "singularity")
(description "Test Singularity container of Guix.")
(value (build-tarball&run-singularity-test))))
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