From 8fe5d95e6653a8ca2f40048b71bb596c80bb264f Mon Sep 17 00:00:00 2001
From: Leo Famulari <leo@famulari.name>
Date: Sun, 29 May 2016 11:13:59 -0400
Subject: [PATCH] services: urandom-seed: Set umask to 077 while shutting down.
* gnu/services/base.scm (urandom-seed-shepherd-service): Call 'umask'.
---
gnu/services/base.scm | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index a45f2196437..b8e47417395 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -460,10 +460,12 @@ (define (urandom-seed-shepherd-service _)
(let ((buf (make-bytevector 512)))
(call-with-input-file "/dev/urandom"
(lambda (urandom)
- (get-bytevector-n! urandom buf 0 512)
- (call-with-output-file #$%random-seed-file
- (lambda (seed)
- (put-bytevector seed buf)))
+ (let ((previous-umask (umask #o077)))
+ (get-bytevector-n! urandom buf 0 512)
+ (call-with-output-file #$%random-seed-file
+ (lambda (seed)
+ (put-bytevector seed buf)))
+ (umask previous-umask))
#t)))))
(modules `((rnrs bytevectors)
(rnrs io ports)
--
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