diff options
Diffstat (limited to 'gnu/build/marionette.scm')
| -rw-r--r-- | gnu/build/marionette.scm | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gnu/build/marionette.scm b/gnu/build/marionette.scm index 506d6da420..424f2b6713 100644 --- a/gnu/build/marionette.scm +++ b/gnu/build/marionette.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2016 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2016, 2017 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; @@ -25,6 +25,7 @@ #:export (marionette? make-marionette marionette-eval + wait-for-file marionette-control marionette-screen-text wait-for-screen-text @@ -164,6 +165,20 @@ QEMU monitor and to the guest's backdoor REPL." (newline repl) (read repl)))) +(define* (wait-for-file file marionette #:key (timeout 10)) + "Wait until FILE exists in MARIONETTE; 'read' its content and return it. If +FILE has not shown up after TIMEOUT seconds, raise an error." + (marionette-eval + `(let loop ((i ,timeout)) + (cond ((file-exists? ,file) + (call-with-input-file ,file read)) + ((> i 0) + (sleep 1) + (loop (- i 1))) + (else + (error "file didn't show up" ,file)))) + marionette)) + (define (marionette-control command marionette) "Run COMMAND in the QEMU monitor of MARIONETTE. COMMAND is a string such as \"sendkey ctrl-alt-f1\" or \"screendump foo.ppm\" (info \"(qemu-doc) |