nbd_supports_vsock - true if libnbd was compiled with support for AF_VSOCK

       Eric Blake

       Richard W.M. Jones

       Copyright Red Hat

       Returns true if libnbd was compiled with support for the "AF_VSOCK" family of sockets, or false if not.

       Note that on the Linux operating system, this returns true if there is compile-time support, but you may
       still need runtime support for some aspects of AF_VSOCK usage; for example, use of "VMADDR_CID_LOCAL" as
       the server name requires that the vsock_loopback kernel module is loaded.

       This function does not fail.

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

       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

libnbd-1.22.2                                      2025-06-16                              nbd_supports_vsock(3)

       nbd_supports_vsock - true if libnbd was compiled with support for AF_VSOCK

       This call returns a boolean value.

nbd_connect_uri(3), nbd_connect_vsock(3), nbd_create(3), libnbd(3).

        #include <libnbd.h>

        int nbd_supports_vsock (
              struct nbd_handle *h
            );

       This function first appeared in libnbd 1.16.

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

        #define LIBNBD_HAVE_NBD_SUPPORTS_VSOCK 1