fe267a5590
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
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* Authors: Doug Rabson <dfr@rabson.org>
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* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#ifndef _RPC_REPLAY_H
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#define _RPC_REPLAY_H
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enum replay_state {
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RS_NEW, /* new request - caller should execute */
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RS_DONE, /* request was executed and reply sent */
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RS_INPROGRESS, /* request is being executed now */
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RS_ERROR /* allocation or other failure */
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};
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struct replay_cache;
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/*
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* Create a new replay cache.
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*/
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struct replay_cache *replay_newcache(size_t);
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/*
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* Set the replay cache size.
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*/
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void replay_setsize(struct replay_cache *, size_t);
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/*
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* Free a replay cache. Caller must ensure that no cache entries are
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* in-progress.
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*/
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void replay_freecache(struct replay_cache *rc);
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/*
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* Check a replay cache for a message from a given address.
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*
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* If this is a new request, RS_NEW is returned. Caller should call
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* replay_setreply with the results of the request.
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*
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* If this is a request which is currently executing
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* (i.e. replay_setreply hasn't been called for it yet), RS_INPROGRESS
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* is returned. The caller should silently drop the request.
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*
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* If a reply to this message already exists, *repmsg and *mp are set
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* to point at the reply and, RS_DONE is returned. The caller should
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* re-send this reply.
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*
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* If the attempt to update the replay cache or copy a replay failed
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* for some reason (typically memory shortage), RS_ERROR is returned.
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*/
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enum replay_state replay_find(struct replay_cache *rc,
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struct rpc_msg *msg, struct sockaddr *addr,
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struct rpc_msg *repmsg, struct mbuf **mp);
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/*
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* Call this after executing a request to record the reply.
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*/
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void replay_setreply(struct replay_cache *rc,
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struct rpc_msg *repmsg, struct sockaddr *addr, struct mbuf *m);
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#endif /* !_RPC_REPLAY_H */
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