gnu: hurd: Fix service socket activation.

Fixes <https://issues.guix.gnu.org/77610>.

* gnu/packages/patches/hurd-socket-activation.patch: New patch
* gnu/packages/hurd.scm (hurd): Add it.
* gnu/local.mk: Register it.

Change-Id: Iff7f30099ffeb014aaacdc3a19bd7930795904b6
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/local.mk

@@ -1593,6 +1593,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/hurd-64bit.patch				\
   %D%/packages/patches/hurd-refcounts-assert.patch		\
   %D%/packages/patches/hurd-rumpdisk-no-hd.patch		\
+  %D%/packages/patches/hurd-socket-activation.patch		\
   %D%/packages/patches/hurd-startup.patch			\
   %D%/packages/patches/hwloc-1-test-btrfs.patch			\
   %D%/packages/patches/i7z-gcc-10.patch				\

gnu/packages/hurd.scm

@@ -319,6 +319,7 @@ Hurd-minimal package which are needed for both glibc and GCC.")
               (patches (search-patches "hurd-refcounts-assert.patch"
                                        "hurd-rumpdisk-no-hd.patch"
                                        "hurd-startup.patch"
+                                       "hurd-socket-activation.patch"
                                        "hurd-64bit.patch"))))
     (version (package-version hurd-headers))
     (arguments

gnu/packages/patches/hurd-socket-activation.patch

@@ -0,0 +1,44 @@
+From 029ab7d7b38c76ba14c24fcbf526ccef29af9e88 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
+Date: Thu, 8 May 2025 23:11:36 +0200
+Subject: pflocal: Do not inherit PFLOCAL_SOCK_NONBLOCK across connect/accept.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Previously, ‘accept’ would return an O_NONBLOCK socket if the listening
+socket was O_NONBLOCK at the time the connection was made.  With this
+change, ‘accept’ always returns a socket where O_NONBLOCK is cleared.
+---
+ pflocal/sock.c | 9 ++++++---
+ 1 file changed, 6 insertions(+), 3 deletions(-)
+
+diff --git a/pflocal/sock.c b/pflocal/sock.c
+index 90c618e..6bc061d 100644
+--- a/pflocal/sock.c
++++ b/pflocal/sock.c
+@@ -1,6 +1,6 @@
+ /* Sock functions
+ 
+-   Copyright (C) 1995,96,2000,01,02, 2005 Free Software Foundation, Inc.
++   Copyright (C) 1995,96,2000,01,02, 2005, 2025 Free Software Foundation, Inc.
+    Written by Miles Bader <miles@gnu.org>
+ 
+    This program is free software; you can redistribute it and/or
+@@ -167,8 +167,11 @@ sock_clone (struct sock *template, struct sock **sock)
+   if (err)
+     return err;
+ 
+-  /* Copy some properties from TEMPLATE.  */
+-  (*sock)->flags = template->flags & ~PFLOCAL_SOCK_CONNECTED;
++  /* Copy some properties from TEMPLATE.  Clear O_NONBLOCK because the socket
++     returned by 'accept' must not inherit O_NONBLOCK from the parent
++     socket.  */
++  (*sock)->flags =
++    template->flags & ~(PFLOCAL_SOCK_CONNECTED | PFLOCAL_SOCK_NONBLOCK);
+ 
+   return 0;
+ }
+-- 
+cgit v1.1
+