lvm2/daemons/clvmd/clvmd-comms.h

/*
 * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
 * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
 *
 * This file is part of LVM2.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License v.2.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 * Abstraction layer for clvmd cluster communications
 */

#ifndef _CLVMD_COMMS_H
#define _CLVMD_COMMS_H

struct local_client;

struct cluster_ops {
	void (*cluster_init_completed) (void);

	int (*cluster_send_message) (void *buf, int msglen, char *csid,
				const char *errtext);
	int (*name_from_csid) (char *csid, char *name);
	int (*csid_from_name) (char *csid, char *name);
	int (*get_num_nodes) (void);
	int (*cluster_fd_callback) (struct local_client *fd, char *buf, int len,
			       char *csid, struct local_client **new_client);
	int (*get_main_cluster_fd) (void);	/* gets accept FD or cman cluster socket */
	int (*cluster_do_node_callback) (struct local_client *client,
				    void (*callback) (struct local_client *,
						      char *csid, int node_up));
	int (*is_quorate) (void);

	void (*get_our_csid) (char *csid);
	void (*add_up_node) (char *csid);
	void (*cluster_closedown) (void);

	int (*sync_lock) (const char *resource, int mode, int flags, int *lockid);
	int (*sync_unlock) (const char *resource, int lockid);

};

#ifdef USE_GULM
#  include "tcp-comms.h"
struct cluster_ops *init_gulm_cluster(void);
#define MAX_CSID_LEN 			GULM_MAX_CSID_LEN
#define MAX_CLUSTER_MEMBER_NAME_LEN	GULM_MAX_CLUSTER_MEMBER_NAME_LEN
#endif

#ifdef USE_CMAN
#  include "cnxman-socket.h"
#  define CMAN_MAX_CSID_LEN 4
#  ifndef MAX_CSID_LEN
#    define MAX_CSID_LEN CMAN_MAX_CSID_LEN
#  endif
#  undef MAX_CLUSTER_MEMBER_NAME_LEN
#  define MAX_CLUSTER_MEMBER_NAME_LEN	CMAN_MAX_CLUSTER_MEMBER_NAME_LEN
struct cluster_ops *init_cman_cluster(void);
#endif


#endif