From 52a6e6d8c7466fe78ab755ae2895dfc0948e401d Mon Sep 17 00:00:00 2001
From: Corinna Vinschen <corinna@vinschen.de>
Date: Tue, 17 Jul 2007 14:39:02 +0000
Subject: 	* fhandler.cc (fhandler_base::fhaccess): Add check for R/O
 file system. 	* security.cc (check_registry_access): Set errno to EROFS when
 checking 	for W_OK.

---
 winsup/cygwin/fhandler.cc | 6 ++++++
 1 file changed, 6 insertions(+)

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

diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc
index ccd556c39..1920dbec7 100644
--- a/winsup/cygwin/fhandler.cc
+++ b/winsup/cygwin/fhandler.cc
@@ -443,6 +443,12 @@ fhandler_base::fhaccess (int flags)
 eaccess_done:
   set_errno (EACCES);
 done:
+  if (!res && (flags & W_OK) && get_device () == FH_FS
+      && (pc.fs_flags () & FILE_READ_ONLY_VOLUME))
+    {
+      set_errno (EROFS);
+      res = -1;
+    }
   debug_printf ("returning %d", res);
   return res;
 }
-- 
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