[hurd] 29/70: libnetfs: handle dead-name notifications

[Samuel Thibault]

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sthibault pushed a commit to branch upstream
in repository hurd.

commit 8436e1b318440a0acacfa7227ee064a74a077958
Author: Justus Winter <address@hidden>
Date:   Tue Jul 30 11:59:10 2013 +0200

    libnetfs: handle dead-name notifications
    
    Handle dead-name notifications the same way libdiskfs does. In fact,
    dead-name.c is a verbatim copy with trivial modifications. It clears
    np->sockaddr if the dead name notification was for that port.
    
    * libnetfs/dead-name.c: New file.
    * libnetfs/Makefile (OTHERSRCS): Add dead-name.c.
---
 libnetfs/Makefile    |    2 +-
 libnetfs/dead-name.c |   45 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/libnetfs/Makefile b/libnetfs/Makefile
index 13c9b53..a9810d2 100644
--- a/libnetfs/Makefile
+++ b/libnetfs/Makefile
@@ -52,7 +52,7 @@ OTHERSRCS= drop-node.c init-init.c make-node.c make-peropen.c 
make-protid.c   \
        init-startup.c startup-argp.c set-options.c append-args.c             \
        runtime-argp.c std-runtime-argp.c std-startup-argp.c                  \
        append-std-options.c trans-callback.c set-get-trans.c                 \
-       nref.c nrele.c nput.c file-get-storage-info-default.c
+       nref.c nrele.c nput.c file-get-storage-info-default.c dead-name.c
 
 SRCS= $(OTHERSRCS) $(FSSRCS) $(IOSRCS) $(FSYSSRCS) $(IFSOCKSRCS)
 
diff --git a/libnetfs/dead-name.c b/libnetfs/dead-name.c
new file mode 100644
index 0000000..ff29cfe
--- /dev/null
+++ b/libnetfs/dead-name.c
@@ -0,0 +1,45 @@
+/* Handle dead name notifications on ports
+   Copyright (C) 1996 Free Software Foundation, Inc.
+   Written by Michael I. Bushnell, p/BSG.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#include "priv.h"
+
+void
+ports_dead_name (void *notify, mach_port_t dead_name)
+{
+  struct protid *pi = ports_lookup_port (netfs_port_bucket, dead_name,
+                                        netfs_protid_class);
+  struct node *np;
+
+  if (pi)
+    {
+      np = pi->po->np;
+      pthread_mutex_lock (&np->lock);
+      if (dead_name == np->sockaddr)
+       {
+         mach_port_deallocate (mach_task_self (), np->sockaddr);
+         np->sockaddr = MACH_PORT_NULL;
+         netfs_nput (np);
+       }
+      else
+       pthread_mutex_unlock (&np->lock);
+    }
+
+  ports_interrupt_notified_rpcs (notify, dead_name, MACH_NOTIFY_DEAD_NAME);
+}

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