GNU bug report logs - #32346
[PATCH 0/6] TOR via Unix domain SOCKS socket

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From: Chris Marusich <cmmarusich <at> gmail.com>
To: 32346 <at> debbugs.gnu.org
Cc: Christopher Lemmer Webber <cwebber <at> dustycloud.org>, Chris Marusich <cmmarusich <at> gmail.com>
Subject: [bug#32346] [PATCH 4/6] marionette: Add wait-for-unix-socket.
Date: Wed,  1 Aug 2018 23:51:57 -0700

* gnu/build/marionette.scm (wait-for-unix-socket): New variable.
---
 gnu/build/marionette.scm | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/gnu/build/marionette.scm b/gnu/build/marionette.scm
index 61284b898..3588bcbe6 100644
--- a/gnu/build/marionette.scm
+++ b/gnu/build/marionette.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2016, 2017, 2018 Ludovic Courtès <ludo <at> gnu.org>
+;;; Copyright © 2018 Chris Marusich <cmmarusich <at> gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -27,6 +28,7 @@
             marionette-eval
             wait-for-file
             wait-for-tcp-port
+            wait-for-unix-socket
             marionette-control
             marionette-screen-text
             wait-for-screen-text
@@ -214,6 +216,29 @@ MARIONETTE.  Raise an error on failure."
     ('failure
      (error "nobody's listening on port" port))))
 
+(define* (wait-for-unix-socket path marionette
+                                #:key (timeout 20))
+  "Wait for up to TIMEOUT seconds for PATH, a Unix domain socket, to accept
+connections in MARIONETTE.  Raise an error on failure."
+  (match (marionette-eval
+          `(begin
+             (let ((sock (socket PF_UNIX SOCK_STREAM 0)))
+               (let loop ((i 0))
+                 (catch 'system-error
+                   (lambda ()
+                     (connect sock AF_UNIX ,path)
+                     'success)
+                   (lambda args
+                     (if (< i ,timeout)
+                         (begin
+                           (sleep 1)
+                           (loop (+ 1 i)))
+                         'failure))))))
+          marionette)
+    ('success #t)
+    ('failure
+     (error "nobody's listening on unix domain socket" path))))
+
 (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)
-- 
2.18.0

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