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=head1 NAME
nbd_get_handshake_flags - see which handshake flags are supported
=head1 SYNOPSIS
#include <libnbd.h>
uint32_t nbd_get_handshake_flags (
struct nbd_handle *h
);
=head1 DESCRIPTION
Return the state of the handshake flags
on this handle. When the
handle has not yet completed a connection (see L<nbd_aio_is_created(3)>),
this returns the flags that the client is willing to use, provided
the server also advertises those flags. After the connection is
ready (see L<nbd_aio_is_ready(3)>), this returns the flags that were
actually agreed on between the server and client. If the NBD
protocol defines new handshake flags, then the return value from
a newer library version may include bits that were undefined at
the time of compilation.
=head1 RETURN VALUE
This call returns a bitmask of LIBNBD_HANDSHAKE_FLAG_* values.
=head1 ERRORS
This function does not fail.
The following parameters must not be NULL: C<h>.
For more information see L<libnbd(3)/Non-NULL parameters>.
=head1 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_GET_HANDSHAKE_FLAGS 1
=head1 SEE ALSO
L<nbd_aio_is_created(3)>,
L<nbd_aio_is_ready(3)>,
L<nbd_create(3)>,
L<nbd_get_protocol(3)>,
L<nbd_set_handshake_flags(3)>,
L<nbd_set_strict_mode(3)>,
L<libnbd(3)>.
=head1 AUTHORS
Eric Blake
Richard W.M. Jones
=head1 COPYRIGHT
Copyright Red Hat
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