blob: 1821ac45c55a85e03f1b7c3ddce452581d8d0da2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 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)
#:use-module (guix gexp)
#:use-module (guix utils)
#:use-module (guix records)
#:use-module (gnu system)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module ((gnu packages) #:select (scheme-modules))
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9 gnu)
#:use-module (ice-9 match)
#:export (marionette-configuration
marionette-configuration?
marionette-configuration-device
marionette-configuration-imported-modules
marionette-configuration-requirements
marionette-service-type
marionette-operating-system
define-os-with-source
system-test
system-test?
system-test-name
system-test-value
system-test-description
system-test-location
fold-system-tests
all-system-tests))
;;; Commentary:
;;;
;;; This module provides the infrastructure to run operating system tests.
;;; The most important part of that is tools to instrument the OS under test,
;;; essentially allowing to run in a virtual machine controlled by the host
;;; system--hence the name "marionette".
;;;
;;; Code:
(define-record-type* <marionette-configuration>
marionette-configuration make-marionette-configuration
marionette-configuration?
(device marionette-configuration-device ;string
(default "/dev/hvc0"))
(imported-modules marionette-configuration-imported-modules
(default '()))
(requirements marionette-configuration-requirements ;list of symbols
(default '())))
(define (marionette-shepherd-service config)
"Return the Shepherd service for the marionette REPL"
(match config
(($ <marionette-configuration> device imported-modules requirement)
(list (shepherd-service
(provision '(marionette))
;; Always depend on UDEV so that DEVICE is available.
(requirement `(udev ,@requirement))
(modules '((ice-9 match)
(srfi srfi-9 gnu)
(guix build syscalls)
(rnrs bytevectors)))
(imported-modules `((guix build syscalls)
,@imported-modules))
(start
#~(lambda ()
(define (clear-echo termios)
(set-field termios (termios-local-flags)
(logand (lognot (local-flags ECHO))
(termios-local-flags termios))))
(define (self-quoting? x)
(letrec-syntax ((one-of (syntax-rules ()
((_) #f)
((_ pred rest ...)
(or (pred x)
(one-of rest ...))))))
(one-of symbol? string? pair? null? vector?
bytevector? number? boolean?)))
(match (primitive-fork)
(0
(dynamic-wind
(const #t)
(lambda ()
(let* ((repl (open-file #$device "r+0"))
(termios (tcgetattr (fileno repl)))
(console (open-file "/dev/console" "r+0")))
;; Don't echo input back.
(tcsetattr (fileno repl) (tcsetattr-action TCSANOW)
(clear-echo termios))
;; Redirect output to the console.
(close-fdes 1)
(close-fdes 2)
(dup2 (fileno console) 1)
(dup2 (fileno console) 2)
(close-port console)
(display 'ready repl)
(let loop ()
(newline repl)
(match (read repl)
((? eof-object?)
(primitive-exit 0))
(expr
(catch #t
(lambda ()
(let ((result (primitive-eval expr)))
(write (if (self-quoting? result)
result
(object->string result))
repl)))
(lambda (key . args)
(print-exception (current-error-port)
(stack-ref (make-stack #t) 1)
key args)
(write #f repl)))))
(loop))))
(lambda ()
(primitive-exit 1))))
(pid
pid))))
(stop #~(make-kill-destructor)))))))
(define marionette-service-type
;; This is the type of the "marionette" service, allowing a guest system to
;; be manipulated from the host. This marionette REPL is essentially a
;; universal backdoor.
(service-type (name 'marionette-repl)
(extensions
(list (service-extension shepherd-root-service-type
marionette-shepherd-service)))))
(define* (marionette-operating-system os
#:key
(imported-modules '())
(requirements '()))
"Return a marionetteed variant of OS such that OS can be used as a
marionette in a virtual machine--i.e., controlled from the host system. The
marionette service in the guest is started after the Shepherd services listed
in REQUIREMENTS."
(operating-system
(inherit os)
(services (cons (service marionette-service-type
(marionette-configuration
(requirements requirements)
(imported-modules imported-modules)))
(operating-system-user-services os)))))
(define-syntax define-os-with-source
(syntax-rules (use-modules operating-system)
"Define two variables: OS containing the given operating system, and
SOURCE containing the source to define OS as an sexp.
This is convenient when we need both the <operating-system> object so we can
instantiate it, and the source to create it so we can store in in a file in
the system under test."
((_ (os source)
(use-modules modules ...)
(operating-system fields ...))
(begin
(define os
(operating-system fields ...))
(define source
'(begin
(use-modules modules ...)
(operating-system fields ...)))))))
;;;
;;; Tests.
;;;
(define-record-type* <system-test> system-test make-system-test
system-test?
(name system-test-name) ;string
(value system-test-value) ;%STORE-MONAD value
(description system-test-description) ;string
(location system-test-location (innate) ;<location>
(default (and=> (current-source-location)
source-properties->location))))
(define (write-system-test test port)
(match test
(($ <system-test> name _ _ ($ <location> file line))
(format port "#<system-test ~a ~a:~a ~a>"
name file line
(number->string (object-address test) 16)))
(($ <system-test> name)
(format port "#<system-test ~a ~a>" name
(number->string (object-address test) 16)))))
(set-record-type-printer! <system-test> write-system-test)
(define (test-modules)
"Return the list of modules that define system tests."
(scheme-modules (dirname (search-path %load-path "guix.scm"))
"gnu/tests"))
(define (fold-system-tests proc seed)
"Invoke PROC on each system test, passing it the test and the previous
result."
(fold (lambda (module result)
(fold (lambda (thing result)
(if (system-test? thing)
(proc thing result)
result))
result
(module-map (lambda (sym var)
(false-if-exception (variable-ref var)))
module)))
'()
(test-modules)))
(define (all-system-tests)
"Return the list of system tests."
(reverse (fold-system-tests cons '())))
;;; tests.scm ends here
|