1nbd_supports_vsock(3)               LIBNBD               nbd_supports_vsock(3)
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NAME

6       nbd_supports_vsock - true if libnbd was compiled with support for
7       AF_VSOCK
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SYNOPSIS

10        #include <libnbd.h>
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12        int nbd_supports_vsock (
13              struct nbd_handle *h
14            );
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DESCRIPTION

17       Returns true if libnbd was compiled with support for the "AF_VSOCK"
18       family of sockets, or false if not.
19
20       Note that on the Linux operating system, this returns true if there is
21       compile-time support, but you may still need runtime support for some
22       aspects of AF_VSOCK usage; for example, use of "VMADDR_CID_LOCAL" as
23       the server name requires that the vsock_loopback kernel module is
24       loaded.
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RETURN VALUE

27       This call returns a boolean value.
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ERRORS

30       This function does not fail.
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32       The following parameters must not be NULL: "h".  For more information
33       see "Non-NULL parameters" in libnbd(3).
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VERSION

36       This function first appeared in libnbd 1.16.
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38       If you need to test if this function is available at compile time check
39       if the following macro is defined:
40
41        #define LIBNBD_HAVE_NBD_SUPPORTS_VSOCK 1
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SEE ALSO

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

47       Eric Blake
48
49       Richard W.M. Jones
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52       Copyright Red Hat
53

LICENSE

55       This library is free software; you can redistribute it and/or modify it
56       under the terms of the GNU Lesser General Public License as published
57       by the Free Software Foundation; either version 2 of the License, or
58       (at your option) any later version.
59
60       This library is distributed in the hope that it will be useful, but
61       WITHOUT ANY WARRANTY; without even the implied warranty of
62       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
63       Lesser General Public License for more details.
64
65       You should have received a copy of the GNU Lesser General Public
66       License along with this library; if not, write to the Free Software
67       Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
68       02110-1301 USA
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72libnbd-1.18.1                     2023-10-31             nbd_supports_vsock(3)
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