freebsd-skq/lib/libipsec/ipsec_strerror.3
Hajimu UMEMOTO 3384154590 Sync with recent KAME.
This work was based on kame-20010528-freebsd43-snap.tgz and some
critical problem after the snap was out were fixed.
There are many many changes since last KAME merge.

TODO:
  - The definitions of SADB_* in sys/net/pfkeyv2.h are still different
    from RFC2407/IANA assignment because of binary compatibility
    issue.  It should be fixed under 5-CURRENT.
  - ip6po_m member of struct ip6_pktopts is no longer used.  But, it
    is still there because of binary compatibility issue.  It should
    be removed under 5-CURRENT.

Reviewed by:	itojun
Obtained from:	KAME
MFC after:	3 weeks
2001-06-11 12:39:29 +00:00

83 lines
2.7 KiB
Groff

.\" $KAME: ipsec_strerror.3,v 1.8 2000/11/20 00:35:14 sakane Exp $
.\" $FreeBSD$
.\"
.\" Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
.\" All rights reserved.
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.\" notice, this list of conditions and the following disclaimer.
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.\" may be used to endorse or promote products derived from this software
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT 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.
.\"
.Dd May 6, 1998
.Dt IPSEC_STRERROR 3
.Os
.\"
.Sh NAME
.Nm ipsec_strerror
.Nd error message for IPsec policy manipulation library
.\"
.Sh SYNOPSIS
.Fd #include <netinet6/ipsec.h>
.Ft "const char *"
.Fn ipsec_strerror
.\"
.Sh DESCRIPTION
.Pa netinet6/ipsec.h
declares
.Pp
.Dl extern int ipsec_errcode;
.Pp
which is used to pass an error code from IPsec policy manipulation library
to an user program.
.Fn ipsec_strerror
can be used to obtain the error message string for the error code.
.Pp
The array pointed to is not to be modified by the program.
Since
.Fn ipsec_strerror
uses
.Xr strerror 3
as underlying function, calling
.Xr strerror 3
after
.Fn ipsec_strerror
would make the return value from
.Fn ipsec_strerror
invalid, or overwritten.
.\"
.Sh RETURN VALUES
.Fn ipsec_strerror
always return a pointer to C string.
The C string must not be overwritten by user programs.
.\"
.Sh SEE ALSO
.Xr ipsec_set_policy 3
.\"
.Sh HISTORY
.Fn ipsec_strerror
first appeared in WIDE/KAME IPv6 protocol stack kit.
.\"
.Sh BUGS
.Fn ipsec_strerror
will return its result which may be overwritten by subsequent calls.