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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 _MHD_LOCAL_H
#define _MHD_LOCAL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <stdarg.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
#include <sys/mkdev.h>
#include <sys/time.h>
#include <sys/dkio.h>
#include <sys/vtoc.h>
#include <metamhd.h>
#include <thread.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* millisecond time
*/
typedef u_longlong_t mhd_msec_t;
/*
* drive record
*/
typedef uint_t mhd_state_t;
#define DRIVE_IDLE 0x0000 /* exclusive state */
#define DRIVE_ERRORED 0x0001 /* exclusive state */
#define DRIVE_IDLING 0x0002 /* exclusive state */
#define DRIVE_RESERVING 0x0004 /* exclusive state */
#define DRIVE_FAILFASTING 0x0008 /* exclusive state */
#define DRIVE_RELEASING 0x0010 /* exclusive state */
#define DRIVE_EXCLUSIVE_STATES 0x00ff /* all exclusive states */
#define DRIVE_PROBING 0x0100
#define DRIVE_STATUSING 0x0200
#define DRIVE_SERIALING 0x0400
#define DRIVE_VTOCING 0x0800
#define DRIVE_CINFOING 0x1000
#define DRIVE_IDENTING (DRIVE_SERIALING | DRIVE_VTOCING | \
DRIVE_CINFOING)
#define DRIVE_IS_IDLE(dp) (((dp)->dr_state == DRIVE_IDLE) || \
((dp)->dr_state == DRIVE_ERRORED))
typedef struct mhd_drive {
struct mhd_drive_set *dr_sp; /* back pointer to set */
char *dr_rname; /* raw device name */
char *dr_rname0; /* slice 0 raw device name */
cond_t dr_cv; /* synchronization */
thread_t dr_thread; /* daemon thread */
int dr_fd; /* open slice 0 */
mhd_state_t dr_state; /* drive state */
int dr_errnum; /* errno for DRIVE_ERRORED */
mhd_msec_t dr_time; /* last successful probe time */
mhd_drive_id_t dr_drive_id; /* unique drive identifier */
} mhd_drive_t;
/*
* drive list
*/
typedef struct mhd_drive_list {
mhd_drive_t **dl_drives; /* allocated list */
size_t dl_alloc; /* amount allocated */
size_t dl_ndrive; /* amount used */
} mhd_drive_list_t;
#define MHD_NULL_LIST { NULL, 0, 0 }
/*
* drive set
*/
typedef struct mhd_drive_set {
char *sr_name; /* set name */
mutex_t sr_mx; /* set mutex */
cond_t sr_cv; /* synchronization */
mhd_opts_t sr_options; /* common options */
mhd_mhiargs_t sr_timeouts; /* reservation timeouts */
mhd_ff_mode_t sr_ff_mode; /* failfast mode */
int sr_ff; /* failfast device descriptor */
mhd_drive_list_t sr_drives; /* drives in set */
} mhd_drive_set_t;
/*
* debug stuff
*/
#define MHD_DEBUG 0
#ifdef MHD_DEBUG
extern int mhd_debug;
#define MHDPRINTF(n) if (mhd_debug > 0) mhd_eprintf n
#define MHDPRINTF1(n) if (mhd_debug > 1) mhd_eprintf n
#define MHDPRINTF2(n) if (mhd_debug > 2) mhd_eprintf n
#else /* ! MHD_DEBUG */
#define MHDPRINTF(n)
#define MHDPRINTF1(n)
#define MHDPRINTF2(n)
#endif /* ! MHD_DEBUG */
/*
* extern functions
*/
/* mhd_drive.c */
extern const mhd_drive_list_t mhd_null_list;
extern void mhd_add_drive(mhd_drive_list_t *dlp, mhd_drive_t *dp);
extern void mhd_del_drive(mhd_drive_list_t *dlp, mhd_drive_t *dp);
extern void mhd_free_list(mhd_drive_list_t *dlp);
extern int mhd_state(mhd_drive_t *dp, mhd_state_t new_state,
mhd_error_t *mhep);
extern int mhd_state_set(mhd_drive_t *dp, mhd_state_t new_state,
mhd_error_t *mhep);
extern int mhd_idle(mhd_drive_t *dp, mhd_error_t *mhep);
extern mhd_drive_t *mhd_create_drive(mhd_drive_set_t *defaultsp,
char *rname, int *fdp, mhd_error_t *mhep);
extern int mhd_create_drives(char *path, mhd_error_t *mhep);
/* mhd_error.c */
extern void mhd_clrerror(mhd_error_t *mhep);
extern int mhd_error(mhd_error_t *mhep, int errnum, char *name);
/*PRINTFLIKE2*/
extern void mhde_perror(mhd_error_t *mhep, const char *fmt, ...);
/*PRINTFLIKE1*/
extern void mhd_perror(const char *fmt, ...);
/*PRINTFLIKE1*/
extern void mhd_eprintf(const char *fmt, ...);
/* mhd_failfast.c */
extern int mhd_ff_disarm(mhd_drive_set_t *sp, mhd_error_t *mhep);
extern int mhd_ff_open(mhd_drive_set_t *sp, mhd_error_t *mhep);
extern int mhd_ff_close(mhd_drive_set_t *sp, mhd_error_t *mhep);
extern int mhd_ff_rearm(mhd_drive_set_t *sp, mhd_error_t *mhep);
extern void mhd_ff_die(mhd_drive_set_t *sp);
extern void mhd_ff_check(mhd_drive_set_t *sp);
/* mhd_init.c */
extern void mhd_exit(int eval);
extern int mhd_init(struct svc_req *rqstp, int amode,
mhd_error_t *mhep);
/* mhd_ioctl.c */
extern int tk_own(mhd_set_t *mhsp, mhd_error_t *mhep);
extern int rel_own(mhd_set_t *mhsp, mhd_error_t *mhep);
extern int get_status(mhd_status_args_t *argsp,
mhd_status_res_t *resp);
/* mhd_mem.c */
extern void *Malloc(size_t s);
extern void *Zalloc(size_t s);
extern void *Realloc(void *p, size_t s);
extern void *Calloc(size_t n, size_t s);
extern char *Strdup(const char *p);
extern void Free(void *p);
/* mhd_set.c */
extern void mhd_add_drive_to_set(mhd_drive_set_t *sp,
mhd_drive_t *dp);
extern void mhd_del_drive_from_set(mhd_drive_t *dp);
extern mhd_drive_set_t *mhd_create_set(mhd_set_t *mhsp, mhd_opts_t options,
mhd_drive_list_t *dlp, mhd_error_t *mhep);
extern mhd_drive_t *mhd_find_drive(char *rname);
extern int mhd_list_drives(char *path, mhd_did_flags_t flags,
mhd_list_res_t *resultsp, mhd_error_t *mhep);
extern int mhd_release_drives(mhd_set_t *mhsp, mhd_opts_t options,
mhd_error_t *mhep);
extern int mhd_reserve_drives(mhd_set_t *mhsp,
mhd_mhiargs_t *timeoutp, mhd_ff_mode_t ff_mode,
mhd_opts_t options, mhd_error_t *mhep);
extern int mhd_status_drives(mhd_set_t *mhsp, mhd_opts_t options,
mhd_drive_status_t **status, mhd_error_t *mhep);
/* mhd_synch.c */
extern void mhd_cv_init(cond_t *cvp);
extern void mhd_cv_destroy(cond_t *cvp);
extern void mhd_cv_wait(cond_t *cvp, mutex_t *mp);
extern void mhd_cv_timedwait(cond_t *cvp, mutex_t *mp,
mhd_msec_t to);
extern void mhd_cv_broadcast(cond_t *cvp);
extern void mhd_mx_init(mutex_t *mp);
extern void mhd_mx_destroy(mutex_t *mp);
extern void mhd_mx_lock(mutex_t *mp);
extern void mhd_mx_unlock(mutex_t *mp);
extern void mhd_rw_rdlock(rwlock_t *rwlp);
extern void mhd_rw_wrlock(rwlock_t *rwlp);
extern void mhd_rw_unlock(rwlock_t *rwlp);
/* mhd_time.c */
extern mhd_msec_t mhd_time();
#ifdef __cplusplus
}
#endif
#endif /* _MHD_LOCAL_H */
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