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.\" Copyright (c) 2008 Isilon Inc http://www.isilon.com/
.\" Authors: Doug Rabson <dfr@rabson.org>
.\" Developed with Red Inc: Alfred Perlstein <alfred@FreeBSD.org>
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" 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.
.\"
.\" $FreeBSD$
.Dd January 26, 2010
.Dt RPC_GSS_SECCREATE 3
.Os
.Sh NAME
.Nm rpc_gss_seccreate
.Nd "create a security context using the RPCSEC_GSS protocol"
.Sh LIBRARY
.Lb librpcsec_gss
.Sh SYNOPSIS
.In rpc/rpcsec_gss.h
.Ft AUTH *
.Fo rpc_gss_seccreate
.Fa "CLIENT *clnt"
.Fa "const char *principal"
.Fa "const char *mechanism"
.Fa "rpc_gss_service_t service"
.Fa "const char *qop"
.Fa "rpc_gss_options_req_t *options_req"
.Fa "rpc_gss_options_ret_t *options_ret"
.Fc
.Sh DESCRIPTION
This function is used to establish a security context between an
application and a remote peer using the RPSEC_GSS protocol.
.Sh PARAMETERS
.Bl -tag -width "options_req"
.It clnt
An RPC handle which is connected to the remote peer
.It principal
The name of the service principal on the remote peer.
For instance, a principal such as
.Qq nfs@server.example.com
might be used by an application which needs to contact an NFS server
.It mechanism
The desired mechanism for this security context.
The value of mechanism should be the name of one of the security
mechanisms listed in /etc/gss/mech.
.It service
Type of service requested.
.Bl -tag -width "rpc_gss_svc_integrity"
.It rpc_gss_svc_default
The default - typically the same as
.Dv rpc_gss_svc_none .
.It rpc_gss_svc_none
RPC headers only are integrity protected by a checksum.
.It rpc_gss_svc_integrity
RPC headers and data are integrity protected by a checksum.
.It rpc_gss_svc_privacy
RPC headers are integrity protected by a checksum and data is encrypted.
.El
.It qop
Desired quality of protection or NULL for the default.
Available values are listed in /etc/gss/qop
.It options_req
Extra security context options to be passed to the underlying GSS-API
mechanism.
Pass
.Dv NULL
to supply default values.
.It options_ret
Various values returned by the underlying GSS-API mechanism.
Pass
.Dv NULL
if these values are not required.
.El
.Sh RETURN VALUES
If the security context was created successfully, a pointer to an
.Vt AUTH
structure that represents the context is returned.
To use this security context for subsequent RPC calls, set
.Va clnt->cl_auth
to this value.
.Sh SEE ALSO
.Xr gssapi 3 ,
.Xr rpc 3 ,
.Xr rpcset_gss 3 ,
.Xr mech 5 ,
.Xr qop 5
.Sh HISTORY
The
.Nm
function first appeared in
.Fx 8.0 .
.Sh AUTHORS
This
manual page was written by
.An Doug Rabson Aq Mt dfr@FreeBSD.org .
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