[newlib-cygwin] Cygwin: FIFO: open pipes with FILE_READ_ATTRIBUTES access

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=eb50f82677c914aadee41a5df4d8693a5af81e25

commit eb50f82677c914aadee41a5df4d8693a5af81e25
Author: Ken Brown <kbrown@cornell.edu>
Date:   Fri Sep 3 14:23:47 2021 -0400

    Cygwin: FIFO: open pipes with FILE_READ_ATTRIBUTES access
    
    This is needed by NtQueryInformationFile, which is used by select.

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

diff --git a/winsup/cygwin/fhandler_fifo.cc b/winsup/cygwin/fhandler_fifo.cc
index b55ba95e7..08b292cad 100644
--- a/winsup/cygwin/fhandler_fifo.cc
+++ b/winsup/cygwin/fhandler_fifo.cc
@@ -254,7 +254,7 @@ fhandler_fifo::open_pipe (HANDLE& ph)
   status = npfs_handle (npfsh);
   if (!NT_SUCCESS (status))
     return status;
-  access = GENERIC_WRITE | SYNCHRONIZE;
+  access = GENERIC_WRITE | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
   InitializeObjectAttributes (&attr, get_pipe_name (),
 			      openflags & O_CLOEXEC ? 0 : OBJ_INHERIT,
 			      npfsh, NULL);