NAME

       nbd_set_uri_allow_tls - set the allowed TLS settings in NBD URIs

SYNOPSIS

        #include <libnbd.h>

        int nbd_set_uri_allow_tls (
              struct nbd_handle *h, int tls
            );

DESCRIPTION

       Set which TLS settings are allowed to appear in NBD URIs.  The default is to allow either
       non-TLS or TLS URIs.

       The "tls" parameter can be:

       "LIBNBD_TLS_DISABLE"
           TLS URIs are not permitted, ie. a URI such as "nbds://..."  will be rejected.

       "LIBNBD_TLS_ALLOW"
           This is the default.  TLS may be used or not, depending on whether the URI uses "nbds"
           or "nbd".

       "LIBNBD_TLS_REQUIRE"
           TLS URIs are required.  All URIs must use "nbds".

RETURN VALUE

       If the call is successful the function returns 0.

ERRORS

       On error -1 is returned.

       Refer to "ERROR HANDLING" in libnbd(3) for how to get further details of the error.

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

HANDLE STATE

       nbd_set_uri_allow_tls can be called when the handle is in the following state:

        ┌─────────────────────────────────────┬─────────────────────────┐
        │ Handle created, before connecting   │ ✅ allowed              │
        │ Connecting                          │ ❌ error                │
        │ Connecting & handshaking (opt_mode) │ ❌ error                │
        │ Connected to the server             │ ❌ error                │
        │ Connection shut down                │ ❌ error                │
        │ Handle dead                         │ ❌ error                │
        └─────────────────────────────────────┴─────────────────────────┘

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_SET_URI_ALLOW_TLS 1

SEE ALSO

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

AUTHORS

       Eric Blake

       Richard W.M. Jones

COPYRIGHT

       Copyright Red Hat

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