From: GNU Libc Maintainers <debian-glibc@lists.debian.org>
Date: Sat, 27 Aug 2022 11:38:11 +0000 (+0100)
Subject: git-spawni-reauth
X-Git-Tag: archive/raspbian/2.34-7+rpi1~1^2~73
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=fe716d50d1bddc336a07be65e7938ce10c9d3419;p=glibc.git

git-spawni-reauth

Committed for 2.36

commit eff158b75dee466ac0c37a17b2165072ee0b7aeb
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu May 5 02:14:43 2022 +0200

    hurd spawni: Fix reauthenticating closed fds

    When an fd is closed, the port cell remains, but the port becomes
    MACH_PORT_NULL, so we have to guard against it.


Gbp-Pq: Topic hurd-i386
Gbp-Pq: Name git-spawni-reauth.diff
---

diff --git a/sysdeps/mach/hurd/spawni.c b/sysdeps/mach/hurd/spawni.c
index 060e389bb..9941ae536 100644
--- a/sysdeps/mach/hurd/spawni.c
+++ b/sysdeps/mach/hurd/spawni.c
@@ -154,7 +154,7 @@ __spawni (pid_t *pid, const char *file,
      reauthenticated, or was newly opened on behalf of the child.  */
   error_t reauthenticate_fd (int fd)
     {
-      if (dtable_cells[fd] != NULL)
+      if (dtable_cells[fd] != NULL && dtable[fd] != MACH_PORT_NULL)
 	{
 	  file_t newfile;
 	  mach_port_t ref = __mach_reply_port ();