1 files changed, 44 insertions, 0 deletions
diff --git a/gnu/packages/patches/shepherd-hurd.patch b/gnu/packages/patches/shepherd-hurd.patch
new file mode 100644
index 0000000000..5043e831f2
--- /dev/null
+++ b/gnu/packages/patches/shepherd-hurd.patch
@@ -0,0 +1,44 @@
+Fixes compilation on the Hurd.
+
+Taken from upstream: http://git.savannah.gnu.org/cgit/shepherd.git/commit/?id=232331369fe2a0495c7c777e11eecabee6257b3f
+
+From 232331369fe2a0495c7c777e11eecabee6257b3f Mon Sep 17 00:00:00 2001
+From: Jan Nieuwenhuizen <janneke@gnu.org>
+Date: Sat, 7 Mar 2020 22:01:23 +0100
+Subject: [PATCH] system: Support compilation on the Hurd.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+* modules/shepherd/system.scm.in (prctl): Wrap 'dynamic-func' call in
+'false-if-exception'.
+
+Co-authored-by: Ludovic Courtès <ludo@gnu.org>
+---
+ modules/shepherd/system.scm.in | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/modules/shepherd/system.scm.in b/modules/shepherd/system.scm.in
+index 769404a..0b2cc9d 100644
+--- a/modules/shepherd/system.scm.in
++++ b/modules/shepherd/system.scm.in
+@@ -1,6 +1,7 @@
+ ;; system.scm -- Low-level operating system interface.
+ ;; Copyright (C) 2013, 2014, 2016, 2018 Ludovic Courtès <ludo@gnu.org>
+ ;; Copyright (C) 2018 Carlo Zancanaro <carlo@zancanaro.id.au>
++;; Copyright (C) 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ ;;
+ ;; This file is part of the GNU Shepherd.
+ ;;
+@@ -145,7 +146,7 @@ ctrlaltdel(8) and see kernel/reboot.c in Linux."
+ (define PR_SET_CHILD_SUBREAPER @PR_SET_CHILD_SUBREAPER@)
+ 
+ (define prctl
+-  (if (dynamic-func "prctl" (dynamic-link))
++  (if (false-if-exception (dynamic-func "prctl" (dynamic-link)))
+       (let ((proc (syscall->procedure long "prctl" (list int int))))
+         (lambda (process operation)
+           "Perform an operation on the given process"
+-- 
+2.24.0
+