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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_MD_NOTIFY_H
#define _SYS_MD_NOTIFY_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/lvm/mdvar.h>
#include <sys/proc.h>
#include <sys/lvm/md_mirror_shared.h>
#include <sys/time.h>
#ifdef __cplusplus
extern "C" {
#endif
#define MD_EVENT_ID (0xda1eab1e)
#define MD_ALLSETS ((ulong_t)0xffffffff)
#define MD_ALLDEVS ((ulong_t)0xffffffff)
#define MD_NOTIFY_HALT_TRIES (4)
#define MD_NOTIFY_NAME_SIZE (64)
#define MD_NOTIFY_REVISION 1
/* mdn_flags bits in struct md_event_queue */
#define MD_EVENT_QUEUE_DESTROY (0x00000001)
#define MD_EVENT_QUEUE_INVALID (0x00000002)
#define MD_EVENT_QUEUE_PERM (0x00000004) /* do not delete when proc dies */
#define MD_EVENT_QUEUE_FULL (0x00000008)
typedef enum md_event_type {
EQ_EMPTY = 0,
/* Configuration Changes */
EQ_CREATE = 1,
EQ_DELETE,
EQ_ADD,
EQ_REMOVE,
EQ_REPLACE,
EQ_GROW,
EQ_RENAME_SRC,
EQ_RENAME_DST,
EQ_MEDIATOR_ADD,
EQ_MEDIATOR_DELETE,
EQ_HOST_ADD,
EQ_HOST_DELETE,
EQ_DRIVE_ADD,
EQ_DRIVE_DELETE,
/* State Changes */
EQ_INIT_START = 0x00000400,
EQ_INIT_FAILED,
EQ_INIT_FATAL,
EQ_INIT_SUCCESS,
EQ_IOERR,
EQ_ERRED,
EQ_LASTERRED,
EQ_OK,
EQ_ENABLE,
EQ_RESYNC_START,
EQ_RESYNC_FAILED,
EQ_RESYNC_SUCCESS, /* resync has succeeded */
EQ_RESYNC_DONE, /* resync completed */
EQ_HOTSPARED, /* hot spare aquired for use */
EQ_HS_FREED, /* hotspare no longer in use */
EQ_HS_CHANGED, /* change of metadevice hotspare pool */
EQ_TAKEOVER,
EQ_RELEASE,
EQ_OPEN_FAIL,
EQ_OFFLINE,
EQ_ONLINE,
EQ_DETACH,
EQ_DETACHING,
EQ_ATTACH,
EQ_ATTACHING,
EQ_CHANGE,
EQ_EXCHANGE,
EQ_REGEN_START,
EQ_REGEN_DONE,
EQ_REGEN_FAILED,
/* User defined event */
EQ_USER = 0x00100000,
/* Notify Specfic */
EQ_NOTIFY_LOST,
EQ_LAST }
md_event_type_t;
typedef enum md_event_cmds {
EQ_NONE = 0x00000000,
EQ_ON = 0x00000001,
EQ_OFF = 0x00000002,
EQ_GET_NOWAIT = 0x00000010,
EQ_GET_WAIT = 0x00000040,
EQ_PUT = 0x00000020,
EQ_ALLVALID = 0x00000073
}md_event_cmds_t;
typedef enum md_tags {
TAG_EMPTY,
TAG_METADEVICE,
TAG_REPLICA,
TAG_HSP,
TAG_HS,
TAG_SET,
TAG_DRIVE,
TAG_HOST,
TAG_MEDIATOR,
TAG_UNK,
TAG_LAST
} md_tags_t;
#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
#pragma pack(4)
#endif
typedef struct md_event_ioctl {
MD_DRIVER
md_error_t mde; /* error return */
uint_t mdn_magic; /* magic number for structure */
int mdn_rev; /* revision number */
char mdn_name[MD_NOTIFY_NAME_SIZE];
/* queue name */
int mdn_flags; /* ioctl flags */
md_event_cmds_t mdn_cmd; /* command value */
md_tags_t mdn_tag; /* object tag */
set_t mdn_set; /* set number */
md_dev64_t mdn_dev; /* device event occurred on */
md_event_type_t mdn_event; /* event */
u_longlong_t mdn_user; /* user defined event */
md_timeval32_t mdn_time; /* time stamp of event */
} md_event_ioctl_t;
#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
#pragma pack()
#endif
/* ioctl flags */
#define EQ_Q_PERM (0x00000001) /* do not delete when proc dies */
#define EQ_Q_ALLVALID (0x00000001) /* all valid notify ioctl flags */
typedef enum notify_cmds_t
{ EQ_LIST_ADD = 1, EQ_LIST_DELETE }
notify_cmds_t;
typedef struct notify {
notify_cmds_t mdn_cmd; /* list function (add/delete) */
md_tags_t mdn_tag; /* type of object */
set_t mdn_set; /* set where event occurred */
md_dev64_t mdn_dev; /* device that event occurred on */
md_event_type_t mdn_event; /* event */
}notify_t;
#ifdef _KERNEL
#define NOTIFY_MD(tag, set, dev, event) \
(void) md_notify_interface(EQ_PUT, (tag), (set), (dev), (event))
#define SE_NOTIFY(se_class, se_subclass, tag, set, dev) \
svm_gen_sysevent((se_class), (se_subclass), (tag), (set), (dev))
typedef struct md_event {
struct md_event *mdn_next; /* pointer to next element */
md_tags_t mdn_tag; /* object type */
set_t mdn_set; /* set where event occurred */
md_dev64_t mdn_dev; /* device that event occurred on */
md_event_type_t mdn_event; /* event */
u_longlong_t mdn_user; /* user defined event */
struct timeval mdn_time; /* time stamp of event */
}md_event_t;
typedef struct md_event_queue {
struct md_event_queue *mdn_nextq; /* next event queue */
char mdn_name[MD_NOTIFY_NAME_SIZE];
/* queue name */
int mdn_flags; /* queue flags */
pid_t mdn_pid; /* pid that created the queue */
proc_t *mdn_proc; /* process that created the queue */
uid_t mdn_uid; /* uid of queue creator */
size_t mdn_size; /* size of the queue in elements */
md_event_t *mdn_front; /* front element in queue */
md_event_t *mdn_tail; /* last element of queue */
int mdn_waiting; /* number of process waiting */
kcondvar_t mdn_cv; /* waiting condition varaible */
} md_event_queue_t;
/*
* The remainder of this file defines items that are used for testing
* md_notify.
*/
/*
* Named services for testing
*/
#define MD_NOTIFY_REAP_OFF "notify turn reap off"
#define MD_NOTIFY_REAP_ON "notify turn reap on"
#define MD_NOTIFY_TEST_STATS "notify test statistics"
/*
* The MD_NOTIFY_TEST_STATS named service can be invoked to get md_notify
* to set the values of this structure. The md_tnotify module uses this
* structure.
*/
typedef struct md_notify_stats {
kmutex_t *mds_eventq_mx; /* Address of mutex protecting */
/* event queue. */
int mds_max_queue; /* Max. # events in notify queue. */
int mds_reap; /* events since last reap. */
int mds_reap_count; /* # events between reaps. */
int mds_reap_off; /* non-zero -> reaping is off. */
} md_notify_stats_t;
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MD_NOTIFY_H */
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