[PATCH]SMB3] Add support for WSL reparse tags

[ronnie sahlberg]

Reviewed-by me

Very good.

On Thu, Oct 22, 2020 at 3:02 PM Steve French via samba-technical
<samba-technical at lists.samba.org> wrote:
>
> The IO_REPARSE_TAG_LX_ tags originally were used by WSL but they
> are preferred by the Linux client in some cases since, unlike
> the NFS reparse tag (or EAs), they don't require an extra query
> to determine which type of special file they represent.
>
> Add support for readdir to recognize special file types of
> FIFO, SOCKET, CHAR, BLOCK and SYMLINK.  This can be tested
> by creating these special files in WSL Linux and then
> sharing that location on the Windows server and mounting
> to the Windows server to access them.
>
> Prior to this patch all of the special files would show up
> as being of type 'file' but with this patch they can be seen
> with the correct file type as can be seen below:
>
>   brwxr-xr-x 1 root root 0, 0 Oct 21 17:10 block
>   crwxr-xr-x 1 root root 0, 0 Oct 21 17:46 char
>   drwxr-xr-x 2 root root    0 Oct 21 18:27 dir
>   prwxr-xr-x 1 root root    0 Oct 21 16:21 fifo
>   -rwxr-xr-x 1 root root    0 Oct 21 15:48 file
>   lrwxr-xr-x 1 root root    0 Oct 21 15:52 symlink-to-file
>
> TODO: go through all documented reparse tags to see if we can
> reasonably map some of them to directories vs. files vs. symlinks
>
> --
> Thanks,
>
> Steve