From 13d75fce48436e4f15bf97b4d2145078888994b0 Mon Sep 17 00:00:00 2001
From: Ken Brown <kbrown@cornell.edu>
Date: Fri, 24 Jan 2020 15:09:03 -0500
Subject: [PATCH] Cygwin: FIFO: fstatvfs: use our handle if O_PATH is set

If O_PATH is set, then the fhandler_fifo object has a handle that can
be used for getting the statvfs information.  Use it by calling
fhandler_base::fstatvfs_by_handle.  Before this change,
fhandler_disk_file::fstatfvs was called on a new fhandler_disk_file
object, which would then have to be opened.
---
 winsup/cygwin/fhandler_fifo.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/winsup/cygwin/fhandler_fifo.cc b/winsup/cygwin/fhandler_fifo.cc
index a338f12cc..ef568f6fe 100644
--- a/winsup/cygwin/fhandler_fifo.cc
+++ b/winsup/cygwin/fhandler_fifo.cc
@@ -906,6 +906,14 @@ errout:
 int __reg2
 fhandler_fifo::fstatvfs (struct statvfs *sfs)
 {
+  if (get_flags () & O_PATH)
+    /* We already have a handle. */
+    {
+      HANDLE h = get_handle ();
+      if (h)
+	return fstatvfs_by_handle (h, sfs);
+    }
+
   fhandler_disk_file fh (pc);
   fh.get_device () = FH_FS;
   return fh.fstatvfs (sfs);