18/23: gnu: shepherd: Build fix for the Hurd.

[guix-commits]

janneke pushed a commit to branch wip-hurd
in repository guix.

commit f127d1c0ab7d3f579d9caf1680c096fbcc1d5065
Author: Jan Nieuwenhuizen <address@hidden>
AuthorDate: Sat Mar 7 16:11:48 2020 +0100

    gnu: shepherd: Build fix for the Hurd.
    
    * gnu/packages/patches/shepherd-hurd.patch: New file.
    * gnu/local.mk (dist_patch_DATA): Add it.
    * gnu/packages/admin.scm (shepherd): Use it.
---
 gnu/local.mk                             |  1 +
 gnu/packages/admin.scm                   |  2 ++
 gnu/packages/patches/shepherd-hurd.patch | 44 ++++++++++++++++++++++++++++++++
 3 files changed, 47 insertions(+)

diff --git a/gnu/local.mk b/gnu/local.mk
index b25d369..0ff248f 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1428,6 +1428,7 @@ dist_patch_DATA =                                         
\
   %D%/packages/patches/seahorse-gkr-use-0-on-empty-flags.patch \
   %D%/packages/patches/seq24-rename-mutex.patch                        \
   %D%/packages/patches/sharutils-CVE-2018-1000097.patch                \
+  %D%/packages/patches/shepherd-hurd.patch                     \
   %D%/packages/patches/shishi-fix-libgcrypt-detection.patch    \
   %D%/packages/patches/slim-session.patch                      \
   %D%/packages/patches/slim-config.patch                       \
diff --git a/gnu/packages/admin.scm b/gnu/packages/admin.scm
index a296d6c..4958d67 100644
--- a/gnu/packages/admin.scm
+++ b/gnu/packages/admin.scm
@@ -74,6 +74,7 @@
   #:use-module (gnu packages file)
   #:use-module (gnu packages ncurses)
   #:use-module (gnu packages readline)
+  #:use-module (gnu packages hurd)
   #:use-module (gnu packages libbsd)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages lua)
@@ -202,6 +203,7 @@ and provides a \"top-like\" mode (monitoring).")
               (method url-fetch)
               (uri (string-append "mirror://gnu/shepherd/shepherd-"
                                   version ".tar.gz"))
+              (patches (search-patches "shepherd-hurd.patch"))
               (sha256
                (base32
                 "07j3vd0y8zab2nwbrwj0ahrfif1ldm5sjssn7m3dw4s307fsrfzx"))))
diff --git a/gnu/packages/patches/shepherd-hurd.patch 
b/gnu/packages/patches/shepherd-hurd.patch
new file mode 100644
index 0000000..5043e83
--- /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 <address@hidden>
+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 <address@hidden>
+---
+ 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 <address@hidden>
+ ;; Copyright (C) 2018 Carlo Zancanaro <address@hidden>
++;; Copyright (C) 2020 Jan (janneke) Nieuwenhuizen <address@hidden>
+ ;;
+ ;; 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
+