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[PATCH] gnu: Use a directory owned by ntpd user for drift file.


From: John Darrington
Subject: [PATCH] gnu: Use a directory owned by ntpd user for drift file.
Date: Wed, 7 Sep 2016 21:52:36 +0200

Fixes bug #24366




* gnu/services/networking.scm (ntp-shepherd-service): Create new
directory at startup.
---
 gnu/services/networking.scm | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/gnu/services/networking.scm b/gnu/services/networking.scm
index 71f49a0..f983961 100644
--- a/gnu/services/networking.scm
+++ b/gnu/services/networking.scm
@@ -2,6 +2,7 @@
 ;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <address@hidden>
 ;;; Copyright © 2015 Mark H Weaver <address@hidden>
 ;;; Copyright © 2016 Efraim Flashner <address@hidden>
+;;; Copyright © 2016 John Darrington <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -272,7 +273,7 @@ Protocol (DHCP) client, on all the non-loopback network 
interfaces."
      (let ()
        ;; TODO: Add authentication support.
        (define config
-         (string-append "driftfile /var/run/ntp.drift\n"
+         (string-append "driftfile /var/run/ntpd/ntp.drift\n"
                         (string-join (map (cut string-append "server " <>)
                                           servers)
                                      "\n")
@@ -307,13 +308,28 @@ restrict -6 ::1\n"))
          (home-directory "/var/empty")
          (shell #~(string-append #$shadow "/sbin/nologin")))))
 
+
+(define (ntp-service-activation config)
+  "Return the activation gexp for config"
+  #~(begin
+      (use-modules (guix build utils))
+
+      (define %user
+        (getpw "ntpd"))
+
+      (let ((directory "/var/run/ntpd"))
+          (mkdir-p directory)
+          (chown directory (passwd:uid %user) (passwd:gid %user)))))
+
 (define ntp-service-type
   (service-type (name 'ntp)
                 (extensions
                  (list (service-extension shepherd-root-service-type
                                           ntp-shepherd-service)
                        (service-extension account-service-type
-                                          (const %ntp-accounts))))))
+                                          (const %ntp-accounts))
+                       (service-extension activation-service-type
+                                          ntp-service-activation)))))
 
 (define* (ntp-service #:key (ntp ntp)
                       (servers %ntp-servers))
-- 
2.1.4




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