On Mar 24 18:24, Martin Wege wrote: > On Mon, Mar 24, 2025 at 5:00 PM Corinna Vinschen > <corinna-cyg...@cygwin.com> wrote: > > > > Redirected to cygwin-developers > > > > ----- Forwarded message from Martin Wege via Cygwin <cyg...@cygwin.com> > > ----- > > > > > Date: Mon, 24 Mar 2025 15:25:46 +0100 > > > From: Martin Wege via Cygwin <cyg...@cygwin.com> > > > Subject: Cygwin 3.7 wishlist: read/write NTFS alternate data streams via > > > openat(O_XATTR) > > > To: cyg...@cygwin.com > > > Reply-To: Martin Wege <martin.l.w...@gmail.com> > > > > > > Hello, > > > > > > another wishlist entry (old one): > > > read/write NTFS alternate data streams via openat(O_XATTR) > > > > > > Opening individual streams might be easy, as Corinna pointed out that > > > cygwin_attach_handle_to_fd() can be used for that (i.e. open stream, > > > and attach handle to fd via cygwin_attach_handle_to_fd()), but the > > > virtual XATTR dir might be a challenge (beyond my skill at least). > > > > > Does the Windows API have an indicator when enumerating directory > entries whether a file has alternate data streams (ADS)?
No. You have to open the file and ask for a stream list explicitely: https://learn.microsoft.com/en-us/windows/win32/api/winbase/ns-winbase-file_stream_info Corinna
