84 lines
2.8 KiB
Groff
84 lines
2.8 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" From: @(#)send.2 8.2 (Berkeley) 2/21/94
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.\" $FreeBSD$
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.\"
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.Dd December 15, 2006
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.Dt SCTP_GETADDRLEN 3
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.Os
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.Sh NAME
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.Nm sctp_getaddrlen
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.Nd return the address length of an address family
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In sys/types.h
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.In sys/socket.h
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.In netinet/sctp.h
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.Ft int
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.Fn sctp_getaddrlen "sa_family_t family"
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.Sh DESCRIPTION
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The
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.Fn sctp_getaddrlen
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function returns the size of a specific address family.
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This function
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is provided for application binary compatibility since it
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provides the application with the size the operating system
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thinks the specific address family is.
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Note that the function
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will actually create an SCTP socket and then gather the
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information via a
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.Fn getsockopt
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system calls.
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If for some reason a SCTP socket cannot
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be created or the
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.Fn getsockopt
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call fails, an error will be returned
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with
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.Va errno
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set as specified in the
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.Fn socket
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or
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.Fn getsockopt
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system call.
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.Sh RETURN VALUES
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The call returns the number of bytes that the operating
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system expects for the specific address family or -1.
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.Sh ERRORS
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The
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.Fn sctp_getaddrlen
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function can return the following errors:
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.Bl -tag -width Er
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.It Bq Er EINVAL
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The address family specified does NOT exist.
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.El
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.Sh SEE ALSO
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.Xr getsockopt 2 ,
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.Xr socket 2 ,
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.Xr sctp 4
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