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.\" $OpenBSD: ERR_set_mark.3,v 1.4 2018/03/23 00:09:11 schwarze Exp $
.\" OpenSSL b97fdb57 Nov 11 09:33:09 2016 +0100
.\"
.\" This file was written by Richard Levitte <levitte@openssl.org>.
.\" Copyright (c) 2003 The OpenSSL Project. All rights reserved.
.\"
.\" 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.
.\"
.\" 3. All advertising materials mentioning features or use of this
.\" software must display the following acknowledgment:
.\" "This product includes software developed by the OpenSSL Project
.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
.\"
.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
.\" endorse or promote products derived from this software without
.\" prior written permission. For written permission, please contact
.\" openssl-core@openssl.org.
.\"
.\" 5. Products derived from this software may not be called "OpenSSL"
.\" nor may "OpenSSL" appear in their names without prior written
.\" permission of the OpenSSL Project.
.\"
.\" 6. Redistributions of any form whatsoever must retain the following
.\" acknowledgment:
.\" "This product includes software developed by the OpenSSL Project
.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
.\" EXPRESSED 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 OpenSSL PROJECT OR
.\" ITS 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 $Mdocdate: March 23 2018 $
.Dt ERR_SET_MARK 3
.Os
.Sh NAME
.Nm ERR_set_mark ,
.Nm ERR_pop_to_mark
.Nd set marks and pop OpenSSL errors until mark
.Sh SYNOPSIS
.In openssl/err.h
.Ft int
.Fn ERR_set_mark void
.Ft int
.Fn ERR_pop_to_mark void
.Sh DESCRIPTION
.Fn ERR_set_mark
sets a mark on the current topmost error record if there is one.
.Pp
.Fn ERR_pop_to_mark
will pop the top of the error stack until a mark is found.
The mark is then removed.
If there is no mark, the whole stack is removed.
.Sh RETURN VALUES
.Fn ERR_set_mark
returns 0 if the error stack is empty, otherwise 1.
.Pp
.Fn ERR_pop_to_mark
returns 0 if there was no mark in the error stack, which implies that
the stack became empty, otherwise 1.
.Sh SEE ALSO
.Xr ERR 3
.Sh HISTORY
.Fn ERR_set_mark
and
.Fn ERR_pop_to_mark
first appeared in OpenSSL 0.9.8 and have been available since
.Ox 4.5 .
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