[PATCH 1/3] fix unlink in container

[Yoshinao Muramatsu]

Deleting files returns STATUS_INVALID_PARAMETE on a bind mountedfile system
in hyper-v container with FILE_DISPOSITION_POSIX_SEMANTICS.
Therefore fall back to default method.

This code is suggeted by Johannes Schindelin on github
and I change it more simple.

Signed-off-by: Yoshinao Muramatsu <ysno@ac.auone-net.jp>
---
 winsup/cygwin/syscalls.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index 8ae0397fb..7430fad65 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -731,7 +731,10 @@ _unlink_nt (path_conv &pc, bool shareable)
       /* Trying to delete in-use executables and DLLs using
          FILE_DISPOSITION_POSIX_SEMANTICS returns STATUS_CANNOT_DELETE.
 	 Fall back to the default method. */
-      if (status != STATUS_CANNOT_DELETE)
+      /* Additionaly that returns STATUS_INVALID_PARAMETER
+         on a bind mounted fs in hyper-v container. Falling back too. */
+      if (status != STATUS_CANNOT_DELETE
+          && status != STATUS_INVALID_PARAMETER)
 	goto out;
     }
 
-- 
2.37.3.windows.1