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2d3f8a411f
It's possible to have several protocols per family which is a problem with the current way the protocols are stored. This allows to register a new protocol in HAProxy which is not a protocol in the strict socket definition. It will be used to register a SOCK_STREAM protocol using socketpair().
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/*
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* include/proto/protocol.h
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* This file declares generic protocol management primitives.
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*
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* Copyright (C) 2000-2012 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_PROTOCOL_H
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#define _PROTO_PROTOCOL_H
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#include <sys/socket.h>
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#include <types/protocol.h>
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extern struct protocol *__protocol_by_family[AF_CUST_MAX];
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/* Registers the protocol <proto> */
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void protocol_register(struct protocol *proto);
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/* Unregisters the protocol <proto>. Note that all listeners must have
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* previously been unbound.
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*/
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void protocol_unregister(struct protocol *proto);
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/* binds all listeneres of all registered protocols. Returns a composition
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* of ERR_NONE, ERR_RETRYABLE, ERR_FATAL.
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*/
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int protocol_bind_all(char *errmsg, int errlen);
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/* unbinds all listeners of all registered protocols. They are also closed.
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* This must be performed before calling exit() in order to get a chance to
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* remove file-system based sockets and pipes.
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* Returns a composition of ERR_NONE, ERR_RETRYABLE, ERR_FATAL.
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*/
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int protocol_unbind_all(void);
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/* enables all listeners of all registered protocols. This is intended to be
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* used after a fork() to enable reading on all file descriptors. Returns a
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* composition of ERR_NONE, ERR_RETRYABLE, ERR_FATAL.
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*/
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int protocol_enable_all(void);
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/* returns the protocol associated to family <family> or NULL if not found */
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static inline struct protocol *protocol_by_family(int family)
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{
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if (family >= 0 && family < AF_CUST_MAX)
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return __protocol_by_family[family];
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return NULL;
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}
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#endif /* _PROTO_PROTOCOL_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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