1 files changed, 52 insertions, 0 deletions
diff --git a/libports/lookup-port.c b/libports/lookup-port.c
new file mode 100644
index 00000000..3db912c6
--- /dev/null
+++ b/libports/lookup-port.c
@@ -0,0 +1,52 @@
+/* 
+   Copyright (C) 1995 Free Software Foundation, Inc.
+   Written by Michael I. Bushnell.
+
+   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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "ports.h"
+#include <cthreads.h>
+#include <hurd/ihash.h>
+
+void *
+ports_lookup_port (struct port_bucket *bucket,
+		   mach_port_t port,
+		   struct port_class *class)
+{
+  struct port_info *pi = 0;
+  
+  mutex_lock (&_ports_lock);
+
+  if (bucket)
+    pi = ihash_find (bucket->htable, port);
+  else
+    for (bucket = _ports_all_buckets; bucket; bucket = bucket->next)
+      if (pi = ihash_find (bucket->htable, port))
+	break;
+  
+  if (pi && class && pi->class != class)
+    pi = 0;
+
+  if (pi)
+    pi->refcnt++;
+
+  mutex_lock (&_ports_lock);
+  
+  return pi;
+}
+
+