nbd_aio_is_negotiating - Man Page

check if connection is ready to send handshake option


 #include <libnbd.h>

 int nbd_aio_is_negotiating (
       struct nbd_handle *h


Return true if this connection is ready to start another option negotiation command while handshaking with the server.  An option command will move back to the connecting state (see nbd_aio_is_connecting(3)).  Note that this state cannot be reached unless requested by nbd_set_opt_mode(3), and even then it only works with newstyle servers; an oldstyle server will skip straight to nbd_aio_is_ready(3).

Return Value

This call returns a boolean value.


This function does not fail.

The following parameters must not be NULL: h. For more information see "Non-NULL parameters" in libnbd(3).


This function first appeared in libnbd 1.4.

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


See Also

nbd_aio_is_connecting(3), nbd_aio_is_ready(3), nbd_create(3), nbd_set_opt_mode(3), libnbd(3).


Eric Blake

Richard W.M. Jones


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

Referenced By

libnbd(3), libnbd-release-notes-1.4(1), NBD(3), nbd_aio_connect(3), nbd_aio_connect_command(3), nbd_aio_connect_socket(3), nbd_aio_connect_systemd_socket_activation(3), nbd_aio_connect_tcp(3), nbd_aio_connect_unix(3), nbd_aio_connect_uri(3), nbd_aio_connect_vsock(3), nbd_aio_opt_go(3), nbd_set_opt_mode(3).

2024-02-17 libnbd-1.19.7