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.\" Copyright (c) 1983, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
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.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" From: @(#)send.2 8.2 (Berkeley) 2/21/94
.\" $FreeBSD$
.\"
.Dd December 15, 2006
.Dt SCTP_OPT_INFO 3
.Os
.Sh NAME
.Nm sctp_opt_info
.Nd get sctp socket information
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sys/types.h
.In sys/socket.h
.In netinet/sctp.h
.Ft int
.Fn sctp_opt_info "int s" "sctp_assoc_t" "int opt" "void *arg" "socklen_t *size"
.Sh DESCRIPTION
The
.Fn sctp_opt_info
call provides a multi-os compatible method for getting
specific
.Fn getsockopt
data where an association identification needs to be passed
into the operating system. For FreeBSD a direct
.Fn getsockopt
may be used, since FreeBSD has the ability to pass information
into the operating system on a
.Fn getsockopt
call. Other operating systems may not have this ability. For those
who wish to write portable code amongst multiple operating system
this call should be used for the for the following sctp
socket options.
.Pp
.Dv SCTP_RTOINFO
.Pp
.Dv SCTP_ASSOCINFO
.Pp
.Dv SCTP_PRIMARY_ADDR
.Pp
.Dv SCTP_SET_PEER_PRIMARY_ADDR
.Pp
.Dv SCTP_STATUS
.Pp
.Dv SCTP_GET_PEER_ADDR_INFO
.Pp
.Dv SCTP_AUTH_ACTIVE_KEY
.Pp
.Dv SCTP_PEER_AUTH_CHUNKS
.Pp
.Dv SCTP_LOCAL_AUTH_CHUNKS
.Sh ERRORS
The
.Fn sctp_opt_info
can return the following errors.
.Bl -tag -width Er
.It Bq Er EINVAL
The argument
.Fa arg
value was invalid.
.It Bq Er EOPNOTSUPP
The argument
.Fa opt
was not one of the above listed SCTP socket
options.
.It Bq Er EBADF
The argument
.Fa s
is not a valid descriptor.
.It Bq Er ENOTSOCK
The argument
.Fa s
is not a socket.
.El
.Sh SEE ALSO
.Xr sctp 4 ,
.Xr getsockopt 2 ,
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