• Sachin Prabhu's avatar
    cifs: Set client guid on per connection basis · 39552ea8
    Sachin Prabhu authored
    When mounting from a Windows 2012R2 server, we hit the following
    problem:
    1) Mount with any of the following versions - 2.0, 2.1 or 3.0
    2) unmount
    3) Attempt a mount again using a different SMB version >= 2.0.
    
    You end up with the following failure:
    Status code returned 0xc0000203 STATUS_USER_SESSION_DELETED
    CIFS VFS: Send error in SessSetup = -5
    CIFS VFS: cifs_mount failed w/return code = -5
    
    I cannot reproduce this issue using a Windows 2008 R2 server.
    
    This appears to be caused because we use the same client guid for the
    connection on first mount which we then disconnect and attempt to mount
    again using a different protocol version. By generating a new guid each
    time a new connection is Negotiated, we avoid hitting this problem.
    Signed-off-by: default avatarSachin Prabhu <sprabhu@redhat.com>
    Signed-off-by: default avatarSteve French <smfrench@gmail.com>
    39552ea8
cifsglob.h 52.1 KB