[newlib-cygwin] Cygwin: dup: fix handle inheritence for disk file pread/pwrite handle

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=9069cb91710d55735af5115681712ba4c2894276

commit 9069cb91710d55735af5115681712ba4c2894276
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Mon Aug 30 21:56:33 2021 +0200

    Cygwin: dup: fix handle inheritence for disk file pread/pwrite handle
    
    The handle is created non-inheritable but gets inheritable when
    dup'ing the file descriptor.  Fix that.
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/fhandler_disk_file.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/winsup/cygwin/fhandler_disk_file.cc b/winsup/cygwin/fhandler_disk_file.cc
index 6170427b0..33d885819 100644
--- a/winsup/cygwin/fhandler_disk_file.cc
+++ b/winsup/cygwin/fhandler_disk_file.cc
@@ -1444,7 +1444,7 @@ fhandler_disk_file::dup (fhandler_base *child, int flags)
   if (!ret && prw_handle
       && !DuplicateHandle (GetCurrentProcess (), prw_handle,
 			   GetCurrentProcess (), &fhc->prw_handle,
-			   0, TRUE, DUPLICATE_SAME_ACCESS))
+			   0, FALSE, DUPLICATE_SAME_ACCESS))
     fhc->prw_handle = NULL;
   return ret;
 }