root/usr/src/cmd/fm/fmd/common/fmd.h
/*
 * 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 (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef _FMD_H
#define _FMD_H

#include <libnvpair.h>
#include <pthread.h>

#ifdef  __cplusplus
extern "C" {
#endif

#include <fmd_list.h>
#include <fmd_time.h>
#include <fmd_api.h>
#include <fmd_trace.h>

struct fmd_conf;                        /* see <fmd_conf.h> */
struct fmd_dispq;                       /* see <fmd_dispq.h> */
struct fmd_timerq;                      /* see <fmd_timerq.h> */
struct fmd_asru_hash;                   /* see <fmd_asru.h> */
struct fmd_scheme_hash;                 /* see <fmd_fmri.h> */
struct fmd_case_hash;                   /* see <fmd_case.h> */
struct fmd_modhash;                     /* see <fmd_module.h> */
struct fmd_module;                      /* see <fmd_module.h> */
struct fmd_log;                         /* see <fmd_log.h> */
struct fmd_idspace;                     /* see <fmd_idspace.h> */
struct topo_hdl;                        /* see <fm/libtopo.h> */

typedef struct fmd_statistics {
        fmd_stat_t ds_log_replayed;     /* number of events replayed from log */
        fmd_stat_t ds_log_partials;     /* number of events partially commit */
        fmd_stat_t ds_err_enospc;       /* number of events w/ ENOSPC errlog */
        fmd_stat_t ds_flt_enospc;       /* number of events w/ ENOSPC fltlog */
        fmd_stat_t ds_oth_enospc;       /* number of events w/ ENOSPC others */
        fmd_stat_t ds_dr_gen;           /* dynamic reconfiguration generation */
        fmd_stat_t ds_topo_gen;         /* topology snapshot generation */
        fmd_stat_t ds_topo_drgen;       /* topology DR generation */
} fmd_statistics_t;

typedef struct fmd {
        const char *d_version;          /* version string for fmd (see fmd.c) */
        const char *d_pname;            /* basename to use for messages */
        pid_t d_pid;                    /* process-ID of current daemon */
        pthread_key_t d_key;            /* key for fmd's thread-specific data */
        volatile int d_signal;          /* signal indicating we should quit */
        volatile int d_running;         /* flag set when fmd_run() succeeds */
        volatile int d_loaded;          /* flag set when all modules loaded */
        volatile int d_booted;          /* flag set when fmd_run() completes */

        uint_t d_fmd_debug;             /* mask of fmd active debugging modes */
        uint_t d_fmd_dbout;             /* fmd debug output sinks (see below) */
        uint_t d_hdl_debug;             /* bool indicating if hdl debug is on */
        uint_t d_hdl_dbout;             /* hdl debug output sinks (see below) */

        char *volatile d_panicstr;      /* pointer to formatted panic message */
        pthread_t d_panictid;           /* tid of thread forcing a panic */
        uint_t d_panicrefs;             /* number of attempts to panic */

        pthread_mutex_t d_xprt_lock;    /* transport suspend lock */
        uint_t d_xprt_suspend;          /* transport suspend count  */
        uint_t d_xprt_ttl;              /* transport default time-to-live */
        struct fmd_idspace *d_xprt_ids; /* transport id hash */

        const fmd_timeops_t *d_clockops; /* system clock ops vector */
        void *d_clockptr;               /* system clock private data */

        pthread_mutex_t d_thr_lock;     /* lock for d_thr_list */
        fmd_list_t d_thr_list;          /* list of all fmd_thread_t's */
        fmd_tracebuf_f *d_thr_trace;    /* thread trace buffer function */
        int d_thr_sig;                  /* cached copy of client.thrsig */

        pthread_mutex_t d_mod_lock;     /* lock for d_mod_list */
        fmd_list_t d_mod_list;          /* list of modules in load order */
        struct fmd_modhash *d_mod_hash; /* hash of modules by base name */
        fmd_event_t *d_mod_event;       /* boot event for module quiesce */

        uint_t d_alloc_msecs;           /* initial delay time for alloc retry */
        uint_t d_alloc_tries;           /* max # times to retry an allocation */
        uint_t d_str_buckets;           /* def # of buckets for string hashes */

        const char *d_rootdir;          /* root directory path */
        const char *d_platform;         /* platform name (uname -i) */
        const char *d_machine;          /* machine class name (uname -m) */
        const char *d_isaname;          /* processor ISA name (uname -p) */

        void *d_sysev_hdl;              /* legacy sysevent handle */
        nv_alloc_t d_nva;               /* libnvpair allocator handle */
        nvlist_t *d_auth;               /* FMRI authority nvlist */
        pthread_mutex_t d_topo_lock;    /* lock for topo hdl */
        fmd_list_t d_topo_list;         /* list of all topology snapshots */

        struct fmd_conf *d_conf;        /* global configuration properties */
        uint_t d_fg;                    /* cached value of "fg" property */

        fmd_statistics_t *d_stats;      /* root module statistics collection */
        pthread_mutex_t d_stats_lock;   /* root module statistics lock */

        struct fmd_module *d_rmod;      /* root module for fmd's main thread */
        struct fmd_module *d_self;      /* self module for fmd's diagnosis */

        pthread_mutex_t d_err_lock;     /* lock for stderr and error stats */
        fmd_stat_t *d_errstats;         /* program-wide error statistics */

        struct fmd_timerq *d_timers;    /* timer queue for module timers */
        struct fmd_dispq *d_disp;       /* dispatch queue for incoming events */
        struct fmd_scheme_hash *d_schemes; /* hash of fmri scheme modules */
        struct fmd_asru_hash *d_asrus;  /* hash of cached asru objects */
        struct fmd_case_hash *d_cases;  /* hash of active cases */

        pthread_rwlock_t d_log_lock;    /* log pointer lock (r=use, w=rotate) */
        struct fmd_log *d_errlog;       /* log file for error events */
        struct fmd_log *d_fltlog;       /* log file for fault events */

        pthread_rwlock_t d_hvilog_lock; /* log pointer lock (r=use, w=rotate) */
        struct fmd_log *d_hvilog;       /* log file for hi value info events */

        pthread_rwlock_t d_ilog_lock;   /* log pointer lock (r=use, w=rotate) */
        struct fmd_log *d_ilog;         /* log file for info events */

        pthread_cond_t d_fmd_cv;        /* sync startup with rpc */
        pthread_mutex_t d_fmd_lock;     /* sync startup with rpc */
} fmd_t;

/*
 * Exit status values used for the few places within fmd where we exit(2) or
 * return from main().  fmd only exits if a fatal error occurs during startup;
 * if anything else happens errors are reported and we just keep trucking.
 */
#define FMD_EXIT_SUCCESS        0       /* successful execution of daemon */
#define FMD_EXIT_ERROR          1       /* failed to initialize daemon */
#define FMD_EXIT_USAGE          2       /* syntax error on command-line */

/*
 * Values associated with fmd's client.error property, stored as a uint32_t.
 * By default, we unload bad clients; other values are for use by developers.
 */
#define FMD_CERROR_UNLOAD       0       /* unload module on error (default) */
#define FMD_CERROR_STOP         1       /* stop fmd for debugger attach */
#define FMD_CERROR_ABORT        2       /* abort fmd and generate core dump */

/*
 * Values associated with any *dbout (debug output sink) property, stored as
 * a uint32_t.  Currently we permit syslog output and stderr output.
 */
#define FMD_DBOUT_SYSLOG        0x1     /* output to syslog(LOG_DEBUG) */
#define FMD_DBOUT_STDERR        0x2     /* output to stderr */

extern const char _fmd_version[];
extern fmd_t fmd;

extern void fmd_door_server(void *);
extern void fmd_create(fmd_t *, const char *, const char *, const char *);
extern void fmd_destroy(fmd_t *);
extern void fmd_run(fmd_t *, int);
extern void fmd_help(fmd_t *);

#ifdef  __cplusplus
}
#endif

#endif  /* _FMD_H */