1nbd_get_handshake_flags(3) LIBNBD nbd_get_handshake_flags(3)
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6 nbd_get_handshake_flags - see which handshake flags are supported
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9 #include <libnbd.h>
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11 unsigned nbd_get_handshake_flags (struct nbd_handle *h);
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14 Return the state of the handshake flags on this handle. When the
15 handle has not yet completed a connection (see "nbd_aio_is_created"),
16 this returns the flags that the client is willing to use, provided the
17 server also advertises those flags. After the connection is ready (see
18 "nbd_aio_is_ready"), this returns the flags that were actually agreed
19 on between the server and client. If the NBD protocol defines new
20 handshake flags, then the return value from a newer library version may
21 include bits that were undefined at the time of compilation.
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24 This call returns a bitmask.
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27 This function does not fail.
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30 This function first appeared in libnbd 1.2.
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32 If you need to test if this function is available at compile time check
33 if the following macro is defined:
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35 #define LIBNBD_HAVE_NBD_GET_HANDSHAKE_FLAGS 1
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38 nbd_aio_is_created(3), nbd_aio_is_ready(3), nbd_create(3),
39 nbd_get_protocol(3), nbd_set_handshake_flags(3), libnbd(3).
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42 Eric Blake
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44 Richard W.M. Jones
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47 Copyright (C) 2019 Red Hat Inc.
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50 This library is free software; you can redistribute it and/or modify it
51 under the terms of the GNU Lesser General Public License as published
52 by the Free Software Foundation; either version 2 of the License, or
53 (at your option) any later version.
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55 This library is distributed in the hope that it will be useful, but
56 WITHOUT ANY WARRANTY; without even the implied warranty of
57 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
58 Lesser General Public License for more details.
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60 You should have received a copy of the GNU Lesser General Public
61 License along with this library; if not, write to the Free Software
62 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
63 02110-1301 USA
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67libnbd-1.3.7 2020-04-23 nbd_get_handshake_flags(3)