From fcccc4b74308fa2dc57191b82028c69ca0d4b5c7 Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Fri, 3 Sep 2021 10:32:30 +0200 Subject: [PATCH] Cygwin: pipes: create pipes with synchronization enabled This isn't used by Cygwin, but it might be used by Win32 processes inheriting the handle. Signed-off-by: Corinna Vinschen --- winsup/cygwin/fhandler_pipe.cc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/winsup/cygwin/fhandler_pipe.cc b/winsup/cygwin/fhandler_pipe.cc index 8b66121b4..b69bb1d40 100644 --- a/winsup/cygwin/fhandler_pipe.cc +++ b/winsup/cygwin/fhandler_pipe.cc @@ -659,7 +659,7 @@ nt_create (LPSECURITY_ATTRIBUTES sa_ptr, PHANDLE r, PHANDLE w, &cygheap->installation_key, GetCurrentProcessId ()); - access = GENERIC_READ | FILE_WRITE_ATTRIBUTES; + access = GENERIC_READ | FILE_WRITE_ATTRIBUTES | SYNCHRONIZE; ULONG pipe_type = pipe_byte ? FILE_PIPE_BYTE_STREAM_TYPE : FILE_PIPE_MESSAGE_TYPE; @@ -738,7 +738,7 @@ nt_create (LPSECURITY_ATTRIBUTES sa_ptr, PHANDLE r, PHANDLE w, { debug_printf ("NtOpenFile: name %S", &pipename); - access = GENERIC_WRITE | FILE_READ_ATTRIBUTES; + access = GENERIC_WRITE | FILE_READ_ATTRIBUTES | SYNCHRONIZE; status = NtOpenFile (w, access, &attr, &io, 0, 0); if (!NT_SUCCESS (status)) { -- 2.43.5