NAME

       nbd_get_handshake_flags - see which handshake flags are supported

SYNOPSIS

        #include <libnbd.h>

        uint32_t nbd_get_handshake_flags (struct nbd_handle *h);

DESCRIPTION

       Return the state of the handshake flags on this handle.  When the handle has not yet
       completed a connection (see nbd_aio_is_created(3)), this returns the flags that the client
       is willing to use, provided the server also advertises those flags.  After the connection
       is ready (see nbd_aio_is_ready(3)), this returns the flags that were actually agreed on
       between the server and client.  If the NBD protocol defines new handshake flags, then the
       return value from a newer library version may include bits that were undefined at the time
       of compilation.

RETURN VALUE

       This call returns a bitmask of LIBNBD_HANDSHAKE_FLAG_* values.

ERRORS

       This function does not fail.

VERSION

       This function first appeared in libnbd 1.2.

       If you need to test if this function is available at compile time check if the following
       macro is defined:

        #define LIBNBD_HAVE_NBD_GET_HANDSHAKE_FLAGS 1

SEE ALSO

       nbd_aio_is_created(3), nbd_aio_is_ready(3), nbd_create(3), nbd_get_protocol(3),
       nbd_set_handshake_flags(3), nbd_set_strict_mode(3), libnbd(3).

AUTHORS

       Eric Blake

       Richard W.M. Jones

COPYRIGHT

       Copyright (C) 2019-2021 Red Hat Inc.

LICENSE

       This library is free software; you can redistribute it and/or modify it under the terms of
       the GNU Lesser General Public License as published by the Free Software Foundation; either
       version 2 of the License, or (at your option) any later version.

       This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU Lesser General Public License for more details.

       You should have received a copy of the GNU Lesser General Public License along with this
       library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
       Floor, Boston, MA 02110-1301 USA