corosync/include/corosync/cfg.h

/*
 * Copyright (c) 2005 MontaVista Software, Inc.
 * Copyright (c) 2006-2009 Red Hat, Inc.
 *
 * All rights reserved.
 *
 * Author: Steven Dake (sdake@redhat.com)
 *
 * This software licensed under BSD license, the text of which follows:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - 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.
 * - Neither the name of the MontaVista Software, Inc. nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
 */
#ifndef AIS_COROSYNCCFG_H_DEFINED
#define AIS_COROSYNCCFG_H_DEFINED

#include <netinet/in.h>
#include <corosync/corotypes.h>

typedef uint64_t corosync_cfg_handle_t;

typedef enum {
	COROSYNC_CFG_ADMINISTRATIVETARGET_SERVICEUNIT = 0,
	COROSYNC_CFG_ADMINISTRATIVETARGET_SERVICEGROUP = 1,
	COROSYNC_CFG_ADMINISTRATIVETARGET_COMPONENTSERVICEINSTANCE = 2,
	COROSYNC_CFG_ADMINISTRATIVETARGET_NODE = 3
} corosync_cfg_administrative_target_t;

typedef enum {
	COROSYNC_CFG_ADMINISTRATIVESTATE_UNLOCKED = 0,
	COROSYNC_CFG_ADMINISTRATIVESTATE_LOCKED = 1,
	COROSYNC_CFG_ADMINISTRATIVESTATE_STOPPING = 2
} corosync_cfg_administrative_state_t;

typedef enum {
	COROSYNC_CFG_OPERATIONALSTATE_ENABLED = 1,
	COROSYNC_CFG_OPERATIONALSTATE_DISABLED = 2
} corosync_cfg_operational_state_t;

typedef enum {
	COROSYNC_CFG_READINESSSTATE_OUTOFSERVICE = 1,
	COROSYNC_CFG_READINESSSTATE_INSERVICE = 2,
	COROSYNC_CFG_READINESSSTATE_STOPPING = 3
} corosync_cfg_readiness_state_t;

typedef enum {
	COROSYNC_CFG_PRESENCESTATE_UNINSTANTIATED = 1,
	COROSYNC_CFG_PRESENCESTATE_INSTANTIATING = 2,
	COROSYNC_CFG_PRESENCESTATE_INSTANTIATED = 3,
	COROSYNC_CFG_PRESENCESTATE_TERMINATING = 4,
	COROSYNC_CFG_PRESENCESTATE_RESTARTING = 5,
	COROSYNC_CFG_PRESENCESTATE_INSTANTIATION_FAILED = 6,
	COROSYNC_CFG_PRESENCESTATE_TERMINATION_FAILED = 7
} corosync_cfg_presence_state_t;

typedef enum {
	COROSYNC_CFG_STATETYPE_OPERATIONAL = 0,
	COROSYNC_CFG_STATETYPE_ADMINISTRATIVE = 1,
	COROSYNC_CFG_STATETYPE_READINESS = 2,
	COROSYNC_CFG_STATETYPE_HA = 3,
	COROSYNC_CFG_STATETYPE_PRESENCE = 4
} corosync_cfg_state_type_t;

/* Shutdown types.
   REQUEST is the normal shutdown. other daemons will be consulted
   REGARDLESS will tell other daemons but ignore their opinions
   IMMEDIATE will shut down straight away (but still tell other nodes)
*/
typedef enum {
	COROSYNC_CFG_SHUTDOWN_FLAG_REQUEST = 0,
	COROSYNC_CFG_SHUTDOWN_FLAG_REGARDLESS = 1,
	COROSYNC_CFG_SHUTDOWN_FLAG_IMMEDIATE = 2,
} corosync_cfg_shutdown_flags_t;

typedef enum {
	COROSYNC_CFG_SHUTDOWN_FLAG_NO = 0,
	COROSYNC_CFG_SHUTDOWN_FLAG_YES = 1,
} corosync_cfg_shutdown_reply_flags_t;

typedef struct {
	cs_name_t name;
	corosync_cfg_state_type_t state_type;
	corosync_cfg_administrative_state_t administrative_state;
} corosync_cfg_state_notification_t;

typedef struct {
        uint32_t number_of_items;
        corosync_cfg_state_notification_t *notification;
} corosync_cfg_state_notification_buffer_t;

typedef void (*corosync_cfg_state_track_callback_t) (
	corosync_cfg_state_notification_buffer_t *notification_buffer,
	cs_error_t error);

typedef void (*corosync_cfg_shutdown_callback_t) (
	corosync_cfg_handle_t cfg_handle,
	corosync_cfg_shutdown_flags_t flags);

typedef struct {
	corosync_cfg_state_track_callback_t corosync_cfg_state_track_callback;
	corosync_cfg_shutdown_callback_t corosync_cfg_shutdown_callback;
} corosync_cfg_callbacks_t;

/*
 * A node address. This is a complete sockaddr_in[6]
 * To explain:
 *  If you cast cna_address to a 'struct sockaddr', the sa_family field
 *  will be AF_INET or AF_INET6. Armed with that knowledge you can then
 *  cast it to a sockaddr_in or sockaddr_in6 and pull out the address.
 *  No other sockaddr fields are valid.
 *  Also, you must ignore any part of the sockaddr beyond the length supplied
 */
typedef struct
{
	int address_length; /* FIXME: set but never used */
	char address[sizeof(struct sockaddr_in6)];
} corosync_cfg_node_address_t;


/*
 * Interfaces
 */
#ifdef __cplusplus
extern "C" {
#endif

cs_error_t
corosync_cfg_initialize (
	corosync_cfg_handle_t *cfg_handle,
	const corosync_cfg_callbacks_t *cfg_callbacks);

cs_error_t
corosync_cfg_fd_get (
	corosync_cfg_handle_t cfg_handle,
	int32_t *selection_fd);

cs_error_t
corosync_cfg_dispatch (
	corosync_cfg_handle_t cfg_handle,
	cs_dispatch_flags_t dispatch_flags);

cs_error_t
corosync_cfg_finalize (
	corosync_cfg_handle_t cfg_handle);

cs_error_t
corosync_cfg_ring_status_get (
	corosync_cfg_handle_t cfg_handle,
	char ***interface_names,
	char ***status,
	unsigned int *interface_count);

cs_error_t
corosync_cfg_ring_reenable (
	corosync_cfg_handle_t cfg_handle);

cs_error_t
corosync_cfg_service_load (
	corosync_cfg_handle_t cfg_handle,
	const char *service_name,
	unsigned int service_ver);

cs_error_t
corosync_cfg_service_unload (
	corosync_cfg_handle_t cfg_handle,
	const char *service_name,
	unsigned int service_ver);

cs_error_t
corosync_cfg_kill_node (
	corosync_cfg_handle_t cfg_handle,
	unsigned int nodeid,
	const char *reason);

cs_error_t
corosync_cfg_try_shutdown (
	corosync_cfg_handle_t cfg_handle,
	corosync_cfg_shutdown_flags_t flags);


cs_error_t
corosync_cfg_replyto_shutdown (
	corosync_cfg_handle_t cfg_handle,
	corosync_cfg_shutdown_reply_flags_t flags);

cs_error_t
corosync_cfg_state_track (
        corosync_cfg_handle_t cfg_handle,
        uint8_t track_flags,
        const corosync_cfg_state_notification_t *notification_buffer);

cs_error_t
corosync_cfg_state_track_stop (
        corosync_cfg_handle_t cfg_handle);


cs_error_t
corosync_cfg_get_node_addrs (
	corosync_cfg_handle_t cfg_handle,
	int nodeid,
	size_t max_addrs,
	int *num_addrs,
	corosync_cfg_node_address_t *addrs);

cs_error_t
corosync_cfg_local_get (
	corosync_cfg_handle_t handle,
	unsigned int *local_nodeid);

#ifdef __cplusplus
}
#endif

#endif /* AIS_COROSYNCCFG_H_DEFINED */