gnu: shadow: Update to 4.4.

* gnu/packages/admin.scm (shadow): Update to 4.4.
[source]: Adjust URL.
* gnu/packages/patches/shadow-4.4-su-snprintf-fix.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add patch.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu/local.mk

@@ -892,6 +892,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/seq24-rename-mutex.patch			\
   %D%/packages/patches/serf-comment-style-fix.patch		\
   %D%/packages/patches/serf-deflate-buckets-test-fix.patch	\
+  %D%/packages/patches/shadow-4.4-su-snprintf-fix.patch         \
   %D%/packages/patches/slim-session.patch			\
   %D%/packages/patches/slim-config.patch			\
   %D%/packages/patches/slim-sigusr1.patch			\

gnu/packages/admin.scm

@@ -270,15 +270,16 @@ client and server, a telnet client and server, and an rsh client and server.")
 (define-public shadow
   (package
     (name "shadow")
-    (version "4.2.1")
+    (version "4.4")
     (source (origin
               (method url-fetch)
               (uri (string-append
-                    "http://pkg-shadow.alioth.debian.org/releases/"
-                    name "-" version ".tar.xz"))
+                    "https://github.com/shadow-maint/shadow/releases/"
+                    "download/" version "/shadow-" version ".tar.xz"))
+              (patches (search-patches "shadow-4.4-su-snprintf-fix.patch"))
               (sha256
                (base32
-                "0h9x1zdbq0pqmygmc1x459jraiqw4gqz8849v268crk78z8r621v"))))
+                "0g7hf55ar2pafg5g3ldx0fwzjk36wf4xb21p4ndanbjm3c2a9ab1"))))
     (build-system gnu-build-system)
     (arguments
      '(;; Assume System V `setpgrp (void)', which is the default on GNU

gnu/packages/patches/shadow-4.4-su-snprintf-fix.patch

@@ -0,0 +1,31 @@
+Patch copied from upstream source repository:
+
+https://github.com/shadow-maint/shadow/commit/67d2bb6e0a5ac124ce1f026dd5723217b1493194
+
+From 67d2bb6e0a5ac124ce1f026dd5723217b1493194 Mon Sep 17 00:00:00 2001
+From: Serge Hallyn <serge@hallyn.com>
+Date: Sun, 18 Sep 2016 21:31:18 -0500
+Subject: [PATCH] su.c: fix missing length argument to snprintf
+
+---
+ src/su.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/su.c b/src/su.c
+index 0c50a9456afd..93ffd2fbe2b4 100644
+--- a/src/su.c
++++ b/src/su.c
+@@ -373,8 +373,8 @@ static void prepare_pam_close_session (void)
+ 		              stderr);
+ 		(void) kill (-pid_child, caught);
+ 
+-		snprintf (kill_msg, _(" ...killed.\n"));
+-		snprintf (wait_msg, _(" ...waiting for child to terminate.\n"));
++		snprintf (kill_msg, 256, _(" ...killed.\n"));
++		snprintf (wait_msg, 256, _(" ...waiting for child to terminate.\n"));
+ 
+ 		(void) signal (SIGALRM, kill_child);
+ 		(void) alarm (2);
+-- 
+2.11.0.rc2
+