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services: dhcp-client: Use 'read-pid-file'. 

* gnu/services/networking.scm (dhcp-client-service-type)[start]: Use
'read-pid-file' instead of the custom and possibly infinite loop.
master
Ludovic Courtès 2018-09-26 22:30:16 +02:00
parent 2a5f2b1f75
commit 6f03b08089
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1 changed files with 2 additions and 14 deletions
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16
gnu/services/networking.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016, 2018 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 John Darrington <jmd@gnu.org>
@ -191,19 +191,7 @@ fe80::1%lo0 apps.facebook.com\n")
(cons* #$dhclient "-nw"
"-pf" #$pid-file ifaces))))
(and (zero? (cdr (waitpid pid)))
(let loop ()
(catch 'system-error
(lambda ()
(call-with-input-file #$pid-file read))
(lambda args
;; 'dhclient' returned before PID-FILE was created,
;; so try again.
(let ((errno (system-error-errno args)))
(if (= ENOENT errno)
(begin
(sleep 1)
(loop))
(apply throw args))))))))))
(read-pid-file #$pid-file)))))
(stop #~(make-kill-destructor))))))
(define* (dhcp-client-service #:key (dhcp isc-dhcp))