[bug#40937] [PATCH] services: syslog: Simplify 'start' method.

[Diego Nicola Barbato <dnbarbato@posteo.de>]

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Hey Guix,

This patch simplifies the 'start' method of 'syslog-service-type' by
setting the umask using the new #:file-creation-mask parameter of
'make-forkexec-constructor', which was introduced in version 0.8.0 of
the Shepherd, instead of wrapping the constructor in a lambda.

Regards,

Diego


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From 5ac4af21427afb8ef498b0de7151f116a6f7d9eb Mon Sep 17 00:00:00 2001
From: Diego Nicola Barbato <dnbarbato@posteo.de>
Date: Tue, 28 Apr 2020 13:31:54 +0200
Subject: [PATCH] services: syslog: Simplify 'start' method.

This is a followup to d7113bb655ff80a868a9e624c913f9d23e6c63ad and
e3358a831e7d5d9e8dc614340e49ea5aeb11a7ff.

* gnu/services/base.scm (syslog-service-type): Change 'start' method to set
  umask using the #:file-creation-mask parameter of
  'make-forkexec-constructor' introduced in version 0.8.0 of the Shepherd.
---
 gnu/services/base.scm | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index 2913478e4a..0f119cc2f9 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -1316,17 +1316,13 @@ Service Switch}, for an example."
       (documentation "Run the syslog daemon (syslogd).")
       (provision '(syslogd))
       (requirement '(user-processes))
-      (start #~(let ((spawn (make-forkexec-constructor
-                             (list #$(syslog-configuration-syslogd config)
-                                   "--rcfile"
-                                   #$(syslog-configuration-config-file config))
-                             #:pid-file "/var/run/syslog.pid")))
-                 (lambda ()
-                   ;; Set the umask such that file permissions are #o640.
-                   (let ((mask (umask #o137))
-                         (pid  (spawn)))
-                     (umask mask)
-                     pid))))
+      (start #~(make-forkexec-constructor
+                (list #$(syslog-configuration-syslogd config)
+                      "--rcfile"
+                      #$(syslog-configuration-config-file config))
+                ;; Set the umask such that file permissions are #o640.
+                #:file-creation-mask #o137
+                #:pid-file "/var/run/syslog.pid"))
       (stop #~(make-kill-destructor))))))
 
 ;; Snippet adapted from the GNU inetutils manual.
-- 
2.26.0