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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _LIBSYSEVENT_IMPL_H
#define _LIBSYSEVENT_IMPL_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* libsysevent implementation-specific structures
*/
/* sysevent publisher/subscriber handle and related data structures */
#define CHAN_PATH "/var/run/sysevent_channels"
#define REG_DOOR "reg_door"
/* Subscription size values */
#define MAX_SUBSCRIPTION_SZ 1024
/* Sysevent Channel Handle */
typedef struct sysevent_impl_handle {
int sh_bound; /* Channel bind status */
int sh_type; /* pub/sub channel binding */
uint32_t sh_id; /* pub/sub within channel */
int sh_door_desc; /* Service door descrip */
char *sh_door_name; /* Service door */
char *sh_channel_name; /* Event Channel name */
char *sh_channel_path; /* Full path to Event Chan */
void *sh_priv_data; /* Pub/Sub private data */
mutex_t sh_lock; /* lock to protect access */
} sysevent_impl_hdl_t;
/* Sysevent queue for subscriber delivery */
typedef struct sysevent_queue {
struct sysevent_queue *sq_next;
sysevent_t *sq_ev;
} sysevent_queue_t;
/*
* Subscriber private data stored in the sysevent channel handle
*/
typedef struct subscriber_priv {
cond_t sp_cv; /* cv for event synch */
mutex_t sp_qlock; /* event queue lock */
char *sp_door_name; /* Publisher reg door */
thread_t sp_handler_tid; /* delivery handler thread id */
struct sysevent_queue *sp_evq_head; /* event q head */
struct sysevent_queue *sp_evq_tail; /* event q tail */
void (*sp_func)(sysevent_t *ev); /* deliver func */
} subscriber_priv_t;
/* Subscriber information stored on the publisher side */
typedef struct subscriber_data {
int sd_flag; /* flag */
char *sd_door_name; /* Client door name */
} subscriber_data_t;
/* Publisher private data stored in the sysevent channel handle */
typedef struct publisher_priv {
struct class_lst *pp_class_hash[CLASS_HASH_SZ + 1];
subscriber_data_t *pp_subscriber_list[MAX_SUBSCRIBERS + 1];
} publisher_priv_t;
/* Subscriber flag values */
#define ACTIVE 1 /* Active subscriber */
#define SEND_AGAIN 2 /* Resend of event requested */
/* Sysevent handle access */
#define SYSEVENT_IMPL_HNDL(sehp) ((sysevent_impl_hdl_t *)(void *)(sehp))
#define SH_BOUND(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_bound)
#define SH_TYPE(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_type)
#define SH_RESULT(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_result)
#define SH_ID(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_id)
#define SH_DOOR_DESC(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_door_desc)
#define SH_DOOR_NAME(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_door_name)
#define SH_CHANNEL_NAME(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_channel_name)
#define SH_CHANNEL_PATH(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_channel_path)
#define SH_LOCK(sehp) (&(SYSEVENT_IMPL_HNDL(sehp)->sh_lock))
#define SH_PRIV_DATA(sehp) (SYSEVENT_IMPL_HNDL(sehp)->sh_priv_data)
#define SH_CLASS_HASH(sehp) (((publisher_priv_t *) \
SH_PRIV_DATA(sehp))->pp_class_hash)
#define SH_SUBSCRIBER(sehp, id) (((publisher_priv_t *) \
SH_PRIV_DATA(sehp))->pp_subscriber_list[id])
/*
* GPEC Interface definitions
*/
typedef struct evchan_subscriber evchan_subscr_t;
typedef struct evchan_sub_head {
evchan_subscr_t *evchan_sub_next;
} evchan_sub_head_t;
/* Event channel handle */
typedef struct evchan_impl_handle {
pid_t ev_pid; /* verify descend via fork() */
int ev_fd; /* descriptor for sev driver */
mutex_t ev_lock; /* lock to protect this structure */
evchan_sub_head_t ev_sub; /* anchor of subscriber list */
} evchan_impl_hdl_t;
/* Evchan handle access */
#define EVCHAN_IMPL_HNDL(evcp) ((evchan_impl_hdl_t *)(void *)(evcp))
#define EV_PID(evcp) (EVCHAN_IMPL_HNDL(evcp)->ev_pid)
#define EV_FD(evcp) (EVCHAN_IMPL_HNDL(evcp)->ev_fd)
#define EV_LOCK(evcp) (&(EVCHAN_IMPL_HNDL(evcp)->ev_lock))
#define EV_SUB(evcp) (&(EVCHAN_IMPL_HNDL(evcp)->ev_sub))
#define EV_SUB_NEXT(evcp) (EVCHAN_IMPL_HNDL(evcp)->ev_sub.evchan_sub_next)
struct sysevent_subattr_impl {
door_xcreate_server_func_t *xs_thrcreate;
void *xs_thrcreate_cookie;
door_xcreate_thrsetup_func_t *xs_thrsetup;
void *xs_thrsetup_cookie;
pthread_attr_t *xs_thrattr;
sigset_t xs_sigmask;
};
/*
* Subscriber private data
*/
struct evchan_subscriber {
evchan_subscr_t *evsub_next; /* list of subscribers */
evchan_impl_hdl_t *ev_subhead; /* link back to channel data */
int evsub_door_desc; /* Service door descriptor */
char *evsub_sid; /* identifier of subscriber */
void *evsub_cookie; /* subscriber cookie */
int (*evsub_func)(sysevent_t *, void *); /* subscriber event handler */
struct sysevent_subattr_impl *evsub_attr;
uint32_t evsub_state;
};
#define EVCHAN_SUB_STATE_ACTIVE 1
#define EVCHAN_SUB_STATE_CLOSING 2
/* Access to subscriber data */
#define EVCHAN_SUBSCR(subp) ((evchan_subscr_t *)(subp))
/* Characters for channel name syntax */
#define EVCH_ISCHANCHAR(c) (isalnum(c) || (c) == '.' || (c) == ':' || \
(c) == '-' || (c) == '_')
#ifdef __cplusplus
}
#endif
#endif /* _LIBSYSEVENT_IMPL_H */
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