nbd_aio_is_processing - Man Page

check if the connection is processing a command


 #include <libnbd.h>

 int nbd_aio_is_processing (struct nbd_handle *h);


Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is processing commands (either writing out a request or reading a reply).

Note the ready state (nbd_aio_is_ready(3)) is not included. In the ready state commands may be in flight (the server is processing them), but libnbd is not processing them.

Return Value

This call returns a boolean value.


This function does not fail.


This function first appeared in libnbd 1.0.

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_ready(3), nbd_create(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


2021-04-29 libnbd-1.7.9