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 $NetBSD: ipsec_strerror.3,v 1.10 2006/09/09 16:22:09 manu Exp $

$KAME: ipsec_strerror.3,v 1.9 2001/08/17 07:21:36 itojun Exp $

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.Dd May 6, 1998 .Dt IPSEC_STRERROR 3 .Os
.Sh NAME .Nm ipsec_strerror .Nd error messages for the IPsec policy manipulation library
.Sh LIBRARY .Lb libipsec .Sh SYNOPSIS n netinet6/ipsec.h .Ft "const char *" .Fn ipsec_strerror void
.Sh DESCRIPTION

a netinet6/ipsec.h declares

p .Dl extern int ipsec_errcode ;

p which is used to pass an error code from the IPsec policy manipulation library to a program. .Fn ipsec_strerror can be used to obtain the error message string for the error code.

p The array pointed to is not to be modified by the calling program. Since .Fn ipsec_strerror uses .Xr strerror 3 as underlying function, calling .Xr strerror 3 after .Fn ipsec_strerror will make the return value from .Fn ipsec_strerror invalid or overwritten.
.Sh RETURN VALUES .Fn ipsec_strerror always returns a pointer to a C string. The C string must not be overwritten by the calling program.
.Sh SEE ALSO .Xr ipsec_set_policy 3
.Sh HISTORY .Fn ipsec_strerror first appeared in the WIDE/KAME IPv6 protocol stack kit.
.Sh BUGS .Fn ipsec_strerror will return its result which may be overwritten by subsequent calls.

p .Va ipsec_errcode is not thread safe.