/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */

/*

 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.

 * Use is subject to license terms.

 */

#ifndef _KDB_LOG_H

#define _KDB_LOG_H

/* #pragma ident        "@(#)kdb_log.h  1.3     04/02/23 SMI" */

#include <iprop_hdr.h>

#include <iprop.h>

#include <limits.h>

#include "kdb.h"

#ifdef  __cplusplus

extern "C" {

#endif

/*

 * DB macros

 */

#define INDEX(ulog, i) (kdb_ent_header_t *)(void *)                     \

    ((char *)(ulog) + sizeof(kdb_hlog_t) + (i) * ulog->kdb_block)

/*

 * Current DB version #

 */

#define KDB_VERSION     1

/*

 * DB log states

 */

#define KDB_STABLE      1

#define KDB_UNSTABLE    2

#define KDB_CORRUPT     3

/*

 * DB log constants

 */

#define KDB_ULOG_MAGIC          0x6661212

#define KDB_ULOG_HDR_MAGIC      0x6662323

/*

 * Default ulog file attributes

 */

#define DEF_ULOGENTRIES 1000

#define ULOG_IDLE_TIME  10              /* in seconds */

/*

 * Max size of update entry + update header

 * We make this large since resizing can be costly.

 */

#define ULOG_BLOCK      2048            /* Default size of principal record */

#define MAXLOGLEN       0x10000000      /* 256 MB log file */

/*

 * Prototype declarations

 */

krb5_error_code ulog_map(krb5_context context, const char *logname,

                         uint32_t entries);

krb5_error_code ulog_init_header(krb5_context context);

krb5_error_code ulog_add_update(krb5_context context, kdb_incr_update_t *upd);

krb5_error_code ulog_get_entries(krb5_context context, const kdb_last_t *last,

                                 kdb_incr_result_t *ulog_handle);

krb5_error_code ulog_replay(krb5_context context, kdb_incr_result_t *incr_ret,

                            char **db_args);

krb5_error_code ulog_conv_2logentry(krb5_context context, krb5_db_entry *entry,

                                    kdb_incr_update_t *update);

krb5_error_code ulog_conv_2dbentry(krb5_context context, krb5_db_entry **entry,

                                   kdb_incr_update_t *update);

void ulog_free_entries(kdb_incr_update_t *updates, int no_of_updates);

krb5_error_code ulog_set_role(krb5_context ctx, iprop_role role);

update_status_t ulog_get_sno_status(krb5_context context,

                                    const kdb_last_t *last);

krb5_error_code ulog_get_last(krb5_context context, kdb_last_t *last_out);

krb5_error_code ulog_set_last(krb5_context context, const kdb_last_t *last);

void ulog_fini(krb5_context context);

typedef struct kdb_hlog {

    uint32_t        kdb_hmagic;     /* Log header magic # */

    uint16_t        db_version_num; /* Kerberos database version no. */

    uint32_t        kdb_num;        /* # of updates in log */

    kdbe_time_t     kdb_first_time; /* Timestamp of first update */

    kdbe_time_t     kdb_last_time;  /* Timestamp of last update */

    kdb_sno_t       kdb_first_sno;  /* First serial # in the update log */

    kdb_sno_t       kdb_last_sno;   /* Last serial # in the update log */

    uint16_t        kdb_state;      /* State of update log */

    uint16_t        kdb_block;      /* Block size of each element */

} kdb_hlog_t;

typedef struct kdb_ent_header {

    uint32_t        kdb_umagic;     /* Update entry magic # */

    kdb_sno_t       kdb_entry_sno;  /* Serial # of entry */

    kdbe_time_t     kdb_time;       /* Timestamp of update */

    bool_t          kdb_commit;     /* Is the entry committed or not */

    uint32_t        kdb_entry_size; /* Size of update entry */

    uint8_t         entry_data[4];  /* Address of kdb_incr_update_t */

} kdb_ent_header_t;

typedef struct _kdb_log_context {

    iprop_role      iproprole;

    kdb_hlog_t      *ulog;

    uint32_t        ulogentries;

    int             ulogfd;

} kdb_log_context;

#ifdef  __cplusplus

}

#endif

#endif  /* !_KDB_LOG_H */