From e6b21dafc1e29f42ac20248d29a93d37fc69e8a9 Mon Sep 17 00:00:00 2001
From: Corinna Vinschen <corinna@vinschen.de>
Date: Fri, 30 Apr 2004 14:02:37 +0000
Subject: 	* fhandler.cc (fhandler_base::open): Fix NT native path
 evaluation 	to allow opening serial ports.

---
 winsup/cygwin/fhandler.cc | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

(limited to 'winsup/cygwin/fhandler.cc')

diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc
index 445146aa9..2dc3eece0 100644
--- a/winsup/cygwin/fhandler.cc
+++ b/winsup/cygwin/fhandler.cc
@@ -554,21 +554,26 @@ fhandler_base::open (int flags, mode_t mode)
       set_errno (ENOENT);
       goto done;
     }
-  if (get_win32_name ()[0] == '\\')
+
+  if (get_win32_name ()[0] != '\\')		/* X:\...  or NUL, etc. */
     {
-      if (get_win32_name ()[1] == '\\')
-        {
-	  str2buf2uni (upath, wpath, "\\??\\UNC");
-	  str2buf2uni_cat (upath, get_win32_name () + 1);
-	}
-      else
-	str2buf2uni (upath, wpath, get_win32_name ());
+      str2buf2uni (upath, wpath, "\\??\\");
+      str2buf2uni_cat (upath, get_win32_name ());
     }
-  else
+  else if (get_win32_name ()[1] != '\\')	/* \Device\... */
+    str2buf2uni (upath, wpath, get_win32_name ());
+  else if (get_win32_name ()[2] != '.'
+  	   || get_win32_name ()[3] != '\\')	/* \\server\share\... */
+    {
+      str2buf2uni (upath, wpath, "\\??\\UNC\\");
+      str2buf2uni_cat (upath, get_win32_name () + 2);
+    }
+  else						/* \\.\device */
     {
       str2buf2uni (upath, wpath, "\\??\\");
-      str2buf2uni_cat (upath, get_win32_name ());
+      str2buf2uni_cat (upath, get_win32_name () + 4);
     }
+
   InitializeObjectAttributes (&attr, &upath, OBJ_CASE_INSENSITIVE | OBJ_INHERIT,
 			      sa.lpSecurityDescriptor, NULL);
 
-- 
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