Re: [PATCH v5 4/7] CIFS: Use NT_CREATE_ANDX command for forcemand mounts

[Pavel Shilovsky]

2013/4/10 Jeff Layton :
> (cc'ing samba-technical)
>
> I don't understand. Why would we need to use NT_CREATE_ANDX in lieu of
> the POSIX trans2 open if the client isn't setting a share reservation
> on that particular open? The server should still enforce share
> reservations that are already set on the file regardless of which
> method is used.

Ok, I checked it out: Samba still enforce share reservations for
trans2 opens too. In this case we need a check like

if (IS_SHARELOCK(inode) && cifs_get_share_flags(openflags) != FILE_SHARE_ALL)
        /* use NT_CREATE_ANDX */
else
       /* use TRANS2 OPEN */

--
Best regards,
Pavel Shilovsky.