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db_pr.c

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1996,2007 Oracle.  All rights reserved.
 *
 * $Id: db_pr.c,v 12.38 2007/07/02 16:58:02 alexg Exp $
 */

#include "db_config.h"

#include "db_int.h"
#include "dbinc/db_page.h"
#include "dbinc/btree.h"
#include "dbinc/hash.h"
#include "dbinc/mp.h"
#include "dbinc/qam.h"
#include "dbinc/db_verify.h"

/*
 * __db_loadme --
 *    A nice place to put a breakpoint.
 *
 * PUBLIC: void __db_loadme __P((void));
 */
void
__db_loadme()
{
      pid_t pid;

      __os_id(NULL, &pid, NULL);
}

#ifdef HAVE_STATISTICS
static int   __db_bmeta __P((DB *, BTMETA *, u_int32_t));
static int   __db_hmeta __P((DB *, HMETA *, u_int32_t));
static void  __db_meta __P((DB *, DBMETA *, FN const *, u_int32_t));
static const char *__db_pagetype_to_string __P((u_int32_t));
static void  __db_prdb __P((DB *, u_int32_t));
static void  __db_proff __P((DB_ENV *, DB_MSGBUF *, void *));
static int   __db_prtree __P((DB *, DB_TXN *, u_int32_t));
static int   __db_qmeta __P((DB *, QMETA *, u_int32_t));

/*
 * __db_dumptree --
 *    Dump the tree to a file.
 *
 * PUBLIC: int __db_dumptree __P((DB *, DB_TXN *, char *, char *));
 */
int
__db_dumptree(dbp, txn, op, name)
      DB *dbp;
      DB_TXN *txn;
      char *op, *name;
{
      DB_ENV *dbenv;
      FILE *fp, *orig_fp;
      u_int32_t flags;
      int ret;

      dbenv = dbp->dbenv;

      for (flags = 0; *op != '\0'; ++op)
            switch (*op) {
            case 'a':
                  LF_SET(DB_PR_PAGE);
                  break;
            case 'h':
                  break;
            case 'r':
                  LF_SET(DB_PR_RECOVERYTEST);
                  break;
            default:
                  return (EINVAL);
            }

      if (name != NULL) {
            if ((fp = fopen(name, "w")) == NULL)
                  return (__os_get_errno());

            orig_fp = dbenv->db_msgfile;
            dbenv->db_msgfile = fp;
      } else
            fp = orig_fp = NULL;

      __db_prdb(dbp, flags);

      __db_msg(dbenv, "%s", DB_GLOBAL(db_line));

      ret = __db_prtree(dbp, txn, flags);

      if (fp != NULL) {
            (void)fclose(fp);
            dbenv->db_msgfile = orig_fp;
      }

      return (ret);
}

static const FN __db_flags_fn[] = {
      { DB_AM_CHKSUM,               "checksumming" },
      { DB_AM_COMPENSATE,           "created by compensating transaction" },
      { DB_AM_CREATED,        "database created" },
      { DB_AM_CREATED_MSTR,         "encompassing file created" },
      { DB_AM_DBM_ERROR,            "dbm/ndbm error" },
      { DB_AM_DELIMITER,            "variable length" },
      { DB_AM_DISCARD,        "discard cached pages" },
      { DB_AM_DUP,                  "duplicates" },
      { DB_AM_DUPSORT,        "sorted duplicates" },
      { DB_AM_ENCRYPT,        "encrypted" },
      { DB_AM_FIXEDLEN,       "fixed-length records" },
      { DB_AM_INMEM,                "in-memory" },
      { DB_AM_IN_RENAME,            "file is being renamed" },
      { DB_AM_NOT_DURABLE,          "changes not logged" },
      { DB_AM_OPEN_CALLED,          "open called" },
      { DB_AM_PAD,                  "pad value" },
      { DB_AM_PGDEF,                "default page size" },
      { DB_AM_RDONLY,               "read-only" },
      { DB_AM_READ_UNCOMMITTED,     "read-uncommitted" },
      { DB_AM_RECNUM,               "Btree record numbers" },
      { DB_AM_RECOVER,        "opened for recovery" },
      { DB_AM_RENUMBER,       "renumber" },
      { DB_AM_REVSPLITOFF,          "no reverse splits" },
      { DB_AM_SECONDARY,            "secondary" },
      { DB_AM_SNAPSHOT,       "load on open" },
      { DB_AM_SUBDB,                "subdatabases" },
      { DB_AM_SWAP,                 "needswap" },
      { DB_AM_TXN,                  "transactional" },
      { DB_AM_VERIFYING,            "verifier" },
      { 0,                    NULL }
};

/*
 * __db_get_flags_fn --
 *    Return the __db_flags_fn array.
 *
 * PUBLIC: const FN * __db_get_flags_fn __P((void));
 */
const FN *
__db_get_flags_fn()
{
      return (__db_flags_fn);
}

/*
 * __db_prdb --
 *    Print out the DB structure information.
 */
static void
__db_prdb(dbp, flags)
      DB *dbp;
      u_int32_t flags;
{
      DB_MSGBUF mb;
      DB_ENV *dbenv;
      BTREE *bt;
      HASH *h;
      QUEUE *q;

      dbenv = dbp->dbenv;

      DB_MSGBUF_INIT(&mb);
      __db_msg(dbenv, "In-memory DB structure:");
      __db_msgadd(dbenv, &mb, "%s: %#lx",
          __db_dbtype_to_string(dbp->type), (u_long)dbp->flags);
      __db_prflags(dbenv, &mb, dbp->flags, __db_flags_fn, " (", ")");
      DB_MSGBUF_FLUSH(dbenv, &mb);

      switch (dbp->type) {
      case DB_BTREE:
      case DB_RECNO:
            bt = dbp->bt_internal;
            __db_msg(dbenv, "bt_meta: %lu bt_root: %lu",
                (u_long)bt->bt_meta, (u_long)bt->bt_root);
            __db_msg(dbenv, "bt_minkey: %lu", (u_long)bt->bt_minkey);
            if (!LF_ISSET(DB_PR_RECOVERYTEST))
                  __db_msg(dbenv, "bt_compare: %#lx bt_prefix: %#lx",
                      P_TO_ULONG(bt->bt_compare),
                      P_TO_ULONG(bt->bt_prefix));
            __db_msg(dbenv, "bt_lpgno: %lu", (u_long)bt->bt_lpgno);
            if (dbp->type == DB_RECNO) {
                  __db_msg(dbenv,
                "re_pad: %#lx re_delim: %#lx re_len: %lu re_source: %s",
                      (u_long)bt->re_pad, (u_long)bt->re_delim,
                      (u_long)bt->re_len,
                      bt->re_source == NULL ? "" : bt->re_source);
                  __db_msg(dbenv,
                      "re_modified: %d re_eof: %d re_last: %lu",
                      bt->re_modified, bt->re_eof, (u_long)bt->re_last);
            }
            break;
      case DB_HASH:
            h = dbp->h_internal;
            __db_msg(dbenv, "meta_pgno: %lu", (u_long)h->meta_pgno);
            __db_msg(dbenv, "h_ffactor: %lu", (u_long)h->h_ffactor);
            __db_msg(dbenv, "h_nelem: %lu", (u_long)h->h_nelem);
            if (!LF_ISSET(DB_PR_RECOVERYTEST))
                  __db_msg(dbenv, "h_hash: %#lx", P_TO_ULONG(h->h_hash));
            break;
      case DB_QUEUE:
            q = dbp->q_internal;
            __db_msg(dbenv, "q_meta: %lu", (u_long)q->q_meta);
            __db_msg(dbenv, "q_root: %lu", (u_long)q->q_root);
            __db_msg(dbenv, "re_pad: %#lx re_len: %lu",
                (u_long)q->re_pad, (u_long)q->re_len);
            __db_msg(dbenv, "rec_page: %lu", (u_long)q->rec_page);
            __db_msg(dbenv, "page_ext: %lu", (u_long)q->page_ext);
            break;
      case DB_UNKNOWN:
      default:
            break;
      }
}

/*
 * __db_prtree --
 *    Print out the entire tree.
 */
static int
__db_prtree(dbp, txn, flags)
      DB *dbp;
      DB_TXN *txn;
      u_int32_t flags;
{
      DB_MPOOLFILE *mpf;
      PAGE *h;
      db_pgno_t i, last;
      int ret;

      mpf = dbp->mpf;

      if (dbp->type == DB_QUEUE)
            return (__db_prqueue(dbp, flags));

      /*
       * Find out the page number of the last page in the database, then
       * dump each page.
       */
      if ((ret = __memp_get_last_pgno(mpf, &last)) != 0)
            return (ret);
      for (i = 0; i <= last; ++i) {
            if ((ret = __memp_fget(mpf, &i, txn, 0, &h)) != 0)
                  return (ret);
            (void)__db_prpage(dbp, h, flags);
            if ((ret = __memp_fput(mpf, h, dbp->priority)) != 0)
                  return (ret);
      }

      return (0);
}

/*
 * __db_meta --
 *    Print out common metadata information.
 */
static void
__db_meta(dbp, dbmeta, fn, flags)
      DB *dbp;
      DBMETA *dbmeta;
      FN const *fn;
      u_int32_t flags;
{
      DB_MSGBUF mb;
      DB_ENV *dbenv;
      DB_MPOOLFILE *mpf;
      PAGE *h;
      db_pgno_t pgno;
      u_int8_t *p;
      int cnt, ret;
      const char *sep;

      dbenv = dbp->dbenv;
      mpf = dbp->mpf;
      DB_MSGBUF_INIT(&mb);

      __db_msg(dbenv, "\tmagic: %#lx", (u_long)dbmeta->magic);
      __db_msg(dbenv, "\tversion: %lu", (u_long)dbmeta->version);
      __db_msg(dbenv, "\tpagesize: %lu", (u_long)dbmeta->pagesize);
      __db_msg(dbenv, "\ttype: %lu", (u_long)dbmeta->type);
      __db_msg(dbenv, "\tkeys: %lu\trecords: %lu",
          (u_long)dbmeta->key_count, (u_long)dbmeta->record_count);

      /*
       * If we're doing recovery testing, don't display the free list,
       * it may have changed and that makes the dump diff not work.
       */
      if (!LF_ISSET(DB_PR_RECOVERYTEST)) {
            __db_msgadd(
                dbenv, &mb, "\tfree list: %lu", (u_long)dbmeta->free);
            for (pgno = dbmeta->free,
                cnt = 0, sep = ", "; pgno != PGNO_INVALID;) {
                  if ((ret = __memp_fget(mpf, &pgno, NULL, 0, &h)) != 0) {
                        DB_MSGBUF_FLUSH(dbenv, &mb);
                        __db_msg(dbenv,
                      "Unable to retrieve free-list page: %lu: %s",
                            (u_long)pgno, db_strerror(ret));
                        break;
                  }
                  pgno = h->next_pgno;
                  (void)__memp_fput(mpf, h, dbp->priority);
                  __db_msgadd(dbenv, &mb, "%s%lu", sep, (u_long)pgno);
                  if (++cnt % 10 == 0) {
                        DB_MSGBUF_FLUSH(dbenv, &mb);
                        cnt = 0;
                        sep = "\t";
                  } else
                        sep = ", ";
            }
            DB_MSGBUF_FLUSH(dbenv, &mb);
            __db_msg(dbenv, "\tlast_pgno: %lu", (u_long)dbmeta->last_pgno);
      }

      if (fn != NULL) {
            DB_MSGBUF_FLUSH(dbenv, &mb);
            __db_msgadd(dbenv, &mb, "\tflags: %#lx", (u_long)dbmeta->flags);
            __db_prflags(dbenv, &mb, dbmeta->flags, fn, " (", ")");
      }

      DB_MSGBUF_FLUSH(dbenv, &mb);
      __db_msgadd(dbenv, &mb, "\tuid: ");
      for (p = (u_int8_t *)dbmeta->uid,
          cnt = 0; cnt < DB_FILE_ID_LEN; ++cnt) {
            __db_msgadd(dbenv, &mb, "%x", *p++);
            if (cnt < DB_FILE_ID_LEN - 1)
                  __db_msgadd(dbenv, &mb, " ");
      }
      DB_MSGBUF_FLUSH(dbenv, &mb);
}

/*
 * __db_bmeta --
 *    Print out the btree meta-data page.
 */
static int
__db_bmeta(dbp, h, flags)
      DB *dbp;
      BTMETA *h;
      u_int32_t flags;
{
      static const FN fn[] = {
            { BTM_DUP,  "duplicates" },
            { BTM_RECNO,      "recno" },
            { BTM_RECNUM,     "btree:recnum" },
            { BTM_FIXEDLEN,   "recno:fixed-length" },
            { BTM_RENUMBER,   "recno:renumber" },
            { BTM_SUBDB,      "multiple-databases" },
            { BTM_DUPSORT,    "sorted duplicates" },
            { 0,        NULL }
      };
      DB_ENV *dbenv;

      dbenv = dbp->dbenv;

      __db_meta(dbp, (DBMETA *)h, fn, flags);

      __db_msg(dbenv, "\tminkey: %lu", (u_long)h->minkey);
      if (dbp->type == DB_RECNO)
            __db_msg(dbenv, "\tre_len: %#lx re_pad: %#lx",
                (u_long)h->re_len, (u_long)h->re_pad);
      __db_msg(dbenv, "\troot: %lu", (u_long)h->root);

      return (0);
}

/*
 * __db_hmeta --
 *    Print out the hash meta-data page.
 */
static int
__db_hmeta(dbp, h, flags)
      DB *dbp;
      HMETA *h;
      u_int32_t flags;
{
      static const FN fn[] = {
            { DB_HASH_DUP,          "duplicates" },
            { DB_HASH_SUBDB,  "multiple-databases" },
            { DB_HASH_DUPSORT,      "sorted duplicates" },
            { 0,              NULL }
      };
      DB_ENV *dbenv;
      DB_MSGBUF mb;
      int i;

      dbenv = dbp->dbenv;
      DB_MSGBUF_INIT(&mb);

      __db_meta(dbp, (DBMETA *)h, fn, flags);

      __db_msg(dbenv, "\tmax_bucket: %lu", (u_long)h->max_bucket);
      __db_msg(dbenv, "\thigh_mask: %#lx", (u_long)h->high_mask);
      __db_msg(dbenv, "\tlow_mask:  %#lx", (u_long)h->low_mask);
      __db_msg(dbenv, "\tffactor: %lu", (u_long)h->ffactor);
      __db_msg(dbenv, "\tnelem: %lu", (u_long)h->nelem);
      __db_msg(dbenv, "\th_charkey: %#lx", (u_long)h->h_charkey);
      __db_msgadd(dbenv, &mb, "\tspare points: ");
      for (i = 0; i < NCACHED; i++)
            __db_msgadd(dbenv, &mb, "%lu ", (u_long)h->spares[i]);
      DB_MSGBUF_FLUSH(dbenv, &mb);

      return (0);
}

/*
 * __db_qmeta --
 *    Print out the queue meta-data page.
 */
static int
__db_qmeta(dbp, h, flags)
      DB *dbp;
      QMETA *h;
      u_int32_t flags;
{
      DB_ENV *dbenv;

      dbenv = dbp->dbenv;

      __db_meta(dbp, (DBMETA *)h, NULL, flags);

      __db_msg(dbenv, "\tfirst_recno: %lu", (u_long)h->first_recno);
      __db_msg(dbenv, "\tcur_recno: %lu", (u_long)h->cur_recno);
      __db_msg(dbenv, "\tre_len: %#lx re_pad: %lu",
          (u_long)h->re_len, (u_long)h->re_pad);
      __db_msg(dbenv, "\trec_page: %lu", (u_long)h->rec_page);
      __db_msg(dbenv, "\tpage_ext: %lu", (u_long)h->page_ext);

      return (0);
}

/*
 * __db_prnpage
 *    -- Print out a specific page.
 *
 * PUBLIC: int __db_prnpage __P((DB *, DB_TXN *, db_pgno_t));
 */
int
__db_prnpage(dbp, txn, pgno)
      DB *dbp;
      DB_TXN *txn;
      db_pgno_t pgno;
{
      DB_MPOOLFILE *mpf;
      PAGE *h;
      int ret, t_ret;

      mpf = dbp->mpf;

      if ((ret = __memp_fget(mpf, &pgno, txn, 0, &h)) != 0)
            return (ret);

      ret = __db_prpage(dbp, h, DB_PR_PAGE);

      if ((t_ret = __memp_fput(mpf, h, dbp->priority)) != 0 && ret == 0)
            ret = t_ret;

      return (ret);
}

/*
 * __db_prpage
 *    -- Print out a page.
 *
 * PUBLIC: int __db_prpage __P((DB *, PAGE *, u_int32_t));
 */
int
__db_prpage(dbp, h, flags)
      DB *dbp;
      PAGE *h;
      u_int32_t flags;
{
      BINTERNAL *bi;
      BKEYDATA *bk;
      DB_ENV *dbenv;
      DB_MSGBUF mb;
      HOFFPAGE a_hkd;
      QAMDATA *qp, *qep;
      RINTERNAL *ri;
      db_indx_t dlen, len, i, *inp;
      db_pgno_t pgno;
      db_recno_t recno;
      u_int32_t pagesize, qlen;
      u_int8_t *ep, *hk, *p;
      int deleted, ret;
      const char *s;
      void *sp;

      dbenv = dbp->dbenv;
      DB_MSGBUF_INIT(&mb);

      /*
       * If we're doing recovery testing and this page is P_INVALID,
       * assume it's a page that's on the free list, and don't display it.
       */
      if (LF_ISSET(DB_PR_RECOVERYTEST) && TYPE(h) == P_INVALID)
            return (0);

      if ((s = __db_pagetype_to_string(TYPE(h))) == NULL) {
            __db_msg(dbenv, "ILLEGAL PAGE TYPE: page: %lu type: %lu",
                (u_long)h->pgno, (u_long)TYPE(h));
            return (EINVAL);
      }

      /*
       * !!!
       * Find out the page size.  We don't want to do it the "right" way,
       * by reading the value from the meta-data page, that's going to be
       * slow.  Reach down into the mpool region.
       */
      pagesize = (u_int32_t)dbp->mpf->mfp->stat.st_pagesize;

      /* Page number, page type. */
      __db_msgadd(dbenv, &mb, "page %lu: %s:", (u_long)h->pgno, s);

      /*
       * LSNs on a metadata page will be different from the original after an
       * abort, in some cases.  Don't display them if we're testing recovery.
       */
      if (!LF_ISSET(DB_PR_RECOVERYTEST) ||
          (TYPE(h) != P_BTREEMETA && TYPE(h) != P_HASHMETA &&
          TYPE(h) != P_QAMMETA && TYPE(h) != P_QAMDATA))
            __db_msgadd(dbenv, &mb, " LSN [%lu][%lu]:",
                (u_long)LSN(h).file, (u_long)LSN(h).offset);

      /*
       * Page level (only applicable for Btree/Recno, but we always display
       * it, for no particular reason.
       */
      __db_msgadd(dbenv, &mb, " level %lu", (u_long)h->level);

      /* Record count. */
      if (TYPE(h) == P_IBTREE ||
          TYPE(h) == P_IRECNO || (TYPE(h) == P_LRECNO &&
          h->pgno == ((BTREE *)dbp->bt_internal)->bt_root))
            __db_msgadd(dbenv, &mb, " records: %lu", (u_long)RE_NREC(h));
      DB_MSGBUF_FLUSH(dbenv, &mb);

      switch (TYPE(h)) {
      case P_BTREEMETA:
            return (__db_bmeta(dbp, (BTMETA *)h, flags));
      case P_HASHMETA:
            return (__db_hmeta(dbp, (HMETA *)h, flags));
      case P_QAMMETA:
            return (__db_qmeta(dbp, (QMETA *)h, flags));
      case P_QAMDATA:                     /* Should be meta->start. */
            if (!LF_ISSET(DB_PR_PAGE))
                  return (0);

            qlen = ((QUEUE *)dbp->q_internal)->re_len;
            recno = (h->pgno - 1) * QAM_RECNO_PER_PAGE(dbp) + 1;
            i = 0;
            qep = (QAMDATA *)((u_int8_t *)h + pagesize - qlen);
            for (qp = QAM_GET_RECORD(dbp, h, i); qp < qep;
                recno++, i++, qp = QAM_GET_RECORD(dbp, h, i)) {
                  if (!F_ISSET(qp, QAM_SET))
                        continue;

                  __db_msgadd(dbenv, &mb, "%s",
                      F_ISSET(qp, QAM_VALID) ? "\t" : "       D");
                  __db_msgadd(dbenv, &mb, "[%03lu] %4lu ", (u_long)recno,
                      (u_long)((u_int8_t *)qp - (u_int8_t *)h));
                  __db_pr(dbenv, &mb, qp->data, qlen);
            }
            return (0);
      default:
            break;
      }

      s = "\t";
      if (TYPE(h) != P_IBTREE && TYPE(h) != P_IRECNO) {
            __db_msgadd(dbenv, &mb, "%sprev: %4lu next: %4lu",
                s, (u_long)PREV_PGNO(h), (u_long)NEXT_PGNO(h));
            s = " ";
      }
      if (TYPE(h) == P_OVERFLOW) {
            __db_msgadd(dbenv, &mb,
                "%sref cnt: %4lu ", s, (u_long)OV_REF(h));
            __db_pr(dbenv, &mb, (u_int8_t *)h + P_OVERHEAD(dbp), OV_LEN(h));
            return (0);
      }
      __db_msgadd(dbenv, &mb, "%sentries: %4lu", s, (u_long)NUM_ENT(h));
      __db_msgadd(dbenv, &mb, " offset: %4lu", (u_long)HOFFSET(h));
      DB_MSGBUF_FLUSH(dbenv, &mb);

      if (TYPE(h) == P_INVALID || !LF_ISSET(DB_PR_PAGE))
            return (0);

      ret = 0;
      inp = P_INP(dbp, h);
      for (i = 0; i < NUM_ENT(h); i++) {
            if ((uintptr_t)(P_ENTRY(dbp, h, i) - (u_int8_t *)h) <
                (uintptr_t)(P_OVERHEAD(dbp)) ||
                (size_t)(P_ENTRY(dbp, h, i) - (u_int8_t *)h) >= pagesize) {
                  __db_msg(dbenv,
                      "ILLEGAL PAGE OFFSET: indx: %lu of %lu",
                      (u_long)i, (u_long)inp[i]);
                  ret = EINVAL;
                  continue;
            }
            deleted = 0;
            switch (TYPE(h)) {
            case P_HASH_UNSORTED:
            case P_HASH:
            case P_IBTREE:
            case P_IRECNO:
                  sp = P_ENTRY(dbp, h, i);
                  break;
            case P_LBTREE:
                  sp = P_ENTRY(dbp, h, i);
                  deleted = i % 2 == 0 &&
                      B_DISSET(GET_BKEYDATA(dbp, h, i + O_INDX)->type);
                  break;
            case P_LDUP:
            case P_LRECNO:
                  sp = P_ENTRY(dbp, h, i);
                  deleted = B_DISSET(GET_BKEYDATA(dbp, h, i)->type);
                  break;
            default:
                  goto type_err;
            }
            __db_msgadd(dbenv, &mb, "%s", deleted ? "       D" : "\t");
            __db_msgadd(
                dbenv, &mb, "[%03lu] %4lu ", (u_long)i, (u_long)inp[i]);
            switch (TYPE(h)) {
            case P_HASH_UNSORTED:
            case P_HASH:
                  hk = sp;
                  switch (HPAGE_PTYPE(hk)) {
                  case H_OFFDUP:
                        memcpy(&pgno,
                            HOFFDUP_PGNO(hk), sizeof(db_pgno_t));
                        __db_msgadd(dbenv, &mb,
                            "%4lu [offpage dups]", (u_long)pgno);
                        DB_MSGBUF_FLUSH(dbenv, &mb);
                        break;
                  case H_DUPLICATE:
                        /*
                         * If this is the first item on a page, then
                         * we cannot figure out how long it is, so
                         * we only print the first one in the duplicate
                         * set.
                         */
                        if (i != 0)
                              len = LEN_HKEYDATA(dbp, h, 0, i);
                        else
                              len = 1;

                        __db_msgadd(dbenv, &mb, "Duplicates:");
                        DB_MSGBUF_FLUSH(dbenv, &mb);
                        for (p = HKEYDATA_DATA(hk),
                            ep = p + len; p < ep;) {
                              memcpy(&dlen, p, sizeof(db_indx_t));
                              p += sizeof(db_indx_t);
                              __db_msgadd(dbenv, &mb, "\t\t");
                              __db_pr(dbenv, &mb, p, dlen);
                              p += sizeof(db_indx_t) + dlen;
                        }
                        break;
                  case H_KEYDATA:
                        __db_pr(dbenv, &mb, HKEYDATA_DATA(hk),
                            LEN_HKEYDATA(dbp, h, i == 0 ?
                            pagesize : 0, i));
                        break;
                  case H_OFFPAGE:
                        memcpy(&a_hkd, hk, HOFFPAGE_SIZE);
                        __db_msgadd(dbenv, &mb,
                            "overflow: total len: %4lu page: %4lu",
                            (u_long)a_hkd.tlen, (u_long)a_hkd.pgno);
                        DB_MSGBUF_FLUSH(dbenv, &mb);
                        break;
                  default:
                        DB_MSGBUF_FLUSH(dbenv, &mb);
                        __db_msg(dbenv, "ILLEGAL HASH PAGE TYPE: %lu",
                            (u_long)HPAGE_PTYPE(hk));
                        ret = EINVAL;
                        break;
                  }
                  break;
            case P_IBTREE:
                  bi = sp;
                  __db_msgadd(dbenv, &mb,
                      "count: %4lu pgno: %4lu type: %lu ",
                      (u_long)bi->nrecs, (u_long)bi->pgno,
                      (u_long)bi->type);
                  switch (B_TYPE(bi->type)) {
                  case B_KEYDATA:
                        __db_pr(dbenv, &mb, bi->data, bi->len);
                        break;
                  case B_DUPLICATE:
                  case B_OVERFLOW:
                        __db_proff(dbenv, &mb, bi->data);
                        break;
                  default:
                        DB_MSGBUF_FLUSH(dbenv, &mb);
                        __db_msg(dbenv, "ILLEGAL BINTERNAL TYPE: %lu",
                            (u_long)B_TYPE(bi->type));
                        ret = EINVAL;
                        break;
                  }
                  break;
            case P_IRECNO:
                  ri = sp;
                  __db_msgadd(dbenv, &mb, "entries %4lu pgno %4lu",
                      (u_long)ri->nrecs, (u_long)ri->pgno);
                  DB_MSGBUF_FLUSH(dbenv, &mb);
                  break;
            case P_LBTREE:
            case P_LDUP:
            case P_LRECNO:
                  bk = sp;
                  switch (B_TYPE(bk->type)) {
                  case B_KEYDATA:
                        __db_pr(dbenv, &mb, bk->data, bk->len);
                        break;
                  case B_DUPLICATE:
                  case B_OVERFLOW:
                        __db_proff(dbenv, &mb, bk);
                        break;
                  default:
                        DB_MSGBUF_FLUSH(dbenv, &mb);
                        __db_msg(dbenv,
                      "ILLEGAL DUPLICATE/LBTREE/LRECNO TYPE: %lu",
                            (u_long)B_TYPE(bk->type));
                        ret = EINVAL;
                        break;
                  }
                  break;
            default:
type_err:         DB_MSGBUF_FLUSH(dbenv, &mb);
                  __db_msg(dbenv,
                      "ILLEGAL PAGE TYPE: %lu", (u_long)TYPE(h));
                  ret = EINVAL;
                  continue;
            }
      }
      return (ret);
}

/*
 * __db_pr --
 *    Print out a data element.
 *
 * PUBLIC: void __db_pr __P((DB_ENV *, DB_MSGBUF *, u_int8_t *, u_int32_t));
 */
void
__db_pr(dbenv, mbp, p, len)
      DB_ENV *dbenv;
      DB_MSGBUF *mbp;
      u_int8_t *p;
      u_int32_t len;
{
      u_int32_t i;

      __db_msgadd(dbenv, mbp, "len: %3lu", (u_long)len);
      if (len != 0) {
            __db_msgadd(dbenv, mbp, " data: ");
            for (i = len <= 20 ? len : 20; i > 0; --i, ++p) {
                  if (isprint((int)*p) || *p == '\n')
                        __db_msgadd(dbenv, mbp, "%c", *p);
                  else
                        __db_msgadd(dbenv, mbp, "%#.2x", (u_int)*p);
            }
            if (len > 20)
                  __db_msgadd(dbenv, mbp, "...");
      }
      DB_MSGBUF_FLUSH(dbenv, mbp);
}

/*
 * __db_proff --
 *    Print out an off-page element.
 */
static void
__db_proff(dbenv, mbp, vp)
      DB_ENV *dbenv;
      DB_MSGBUF *mbp;
      void *vp;
{
      BOVERFLOW *bo;

      bo = vp;
      switch (B_TYPE(bo->type)) {
      case B_OVERFLOW:
            __db_msgadd(dbenv, mbp, "overflow: total len: %4lu page: %4lu",
                (u_long)bo->tlen, (u_long)bo->pgno);
            break;
      case B_DUPLICATE:
            __db_msgadd(
                dbenv, mbp, "duplicate: page: %4lu", (u_long)bo->pgno);
            break;
      default:
            /* NOTREACHED */
            break;
      }
      DB_MSGBUF_FLUSH(dbenv, mbp);
}

/*
 * __db_prflags --
 *    Print out flags values.
 *
 * PUBLIC: void __db_prflags __P((DB_ENV *, DB_MSGBUF *,
 * PUBLIC:     u_int32_t, const FN *, const char *, const char *));
 */
void
__db_prflags(dbenv, mbp, flags, fn, prefix, suffix)
      DB_ENV *dbenv;
      DB_MSGBUF *mbp;
      u_int32_t flags;
      FN const *fn;
      const char *prefix, *suffix;
{
      DB_MSGBUF mb;
      const FN *fnp;
      int found, standalone;
      const char *sep;

      if (fn == NULL)
            return;

      /*
       * If it's a standalone message, output the suffix (which will be the
       * label), regardless of whether we found anything or not, and flush
       * the line.
       */
      if (mbp == NULL) {
            standalone = 1;
            mbp = &mb;
            DB_MSGBUF_INIT(mbp);
      } else
            standalone = 0;

      sep = prefix == NULL ? "" : prefix;
      for (found = 0, fnp = fn; fnp->mask != 0; ++fnp)
            if (LF_ISSET(fnp->mask)) {
                  __db_msgadd(dbenv, mbp, "%s%s", sep, fnp->name);
                  sep = ", ";
                  found = 1;
            }

      if ((standalone || found) && suffix != NULL)
            __db_msgadd(dbenv, mbp, "%s", suffix);
      if (standalone)
            DB_MSGBUF_FLUSH(dbenv, mbp);
}

/*
 * __db_lockmode_to_string --
 *    Return the name of the lock mode.
 *
 * PUBLIC: const char * __db_lockmode_to_string __P((db_lockmode_t));
 */
const char *
__db_lockmode_to_string(mode)
      db_lockmode_t mode;
{
      switch (mode) {
      case DB_LOCK_NG:
            return ("Not granted");
      case DB_LOCK_READ:
            return ("Shared/read");
      case DB_LOCK_WRITE:
            return ("Exclusive/write");
      case DB_LOCK_WAIT:
            return ("Wait for event");
      case DB_LOCK_IWRITE:
            return ("Intent exclusive/write");
      case DB_LOCK_IREAD:
            return ("Intent shared/read");
      case DB_LOCK_IWR:
            return ("Intent to read/write");
      case DB_LOCK_READ_UNCOMMITTED:
            return ("Read uncommitted");
      case DB_LOCK_WWRITE:
            return ("Was written");
      default:
            break;
      }
      return ("UNKNOWN LOCK MODE");
}

/*
 * __db_pagetype_to_string --
 *    Return the name of the specified page type.
 */
static const char *
__db_pagetype_to_string(type)
      u_int32_t type;
{
      char *s;

      s = NULL;
      switch (type) {
      case P_BTREEMETA:
            s = "btree metadata";
            break;
      case P_LDUP:
            s = "duplicate";
            break;
      case P_HASH_UNSORTED:
            s = "hash unsorted";
            break;
      case P_HASH:
            s = "hash";
            break;
      case P_HASHMETA:
            s = "hash metadata";
            break;
      case P_IBTREE:
            s = "btree internal";
            break;
      case P_INVALID:
            s = "invalid";
            break;
      case P_IRECNO:
            s = "recno internal";
            break;
      case P_LBTREE:
            s = "btree leaf";
            break;
      case P_LRECNO:
            s = "recno leaf";
            break;
      case P_OVERFLOW:
            s = "overflow";
            break;
      case P_QAMMETA:
            s = "queue metadata";
            break;
      case P_QAMDATA:
            s = "queue";
            break;
      default:
            /* Just return a NULL. */
            break;
      }
      return (s);
}

#else /* !HAVE_STATISTICS */

/*
 * __db_dumptree --
 *    Dump the tree to a file.
 *
 * PUBLIC: int __db_dumptree __P((DB *, DB_TXN *, char *, char *));
 */
int
__db_dumptree(dbp, txn, op, name)
      DB *dbp;
      DB_TXN *txn;
      char *op, *name;
{
      COMPQUIET(txn, NULL);
      COMPQUIET(op, NULL);
      COMPQUIET(name, NULL);

      return (__db_stat_not_built(dbp->dbenv));
}

/*
 * __db_get_flags_fn --
 *    Return the __db_flags_fn array.
 *
 * PUBLIC: const FN * __db_get_flags_fn __P((void));
 */
const FN *
__db_get_flags_fn()
{
      /*
       * !!!
       * The Tcl API uses this interface, stub it off.
       */
      return (NULL);
}
#endif

/*
 * __db_dump_pp --
 *    DB->dump pre/post processing.
 *
 * PUBLIC: int __db_dump_pp __P((DB *, const char *,
 * PUBLIC:     int (*)(void *, const void *), void *, int, int));
 */
int
__db_dump_pp(dbp, subname, callback, handle, pflag, keyflag)
      DB *dbp;
      const char *subname;
      int (*callback) __P((void *, const void *));
      void *handle;
      int pflag, keyflag;
{
      DB_ENV *dbenv;
      DB_THREAD_INFO *ip;
      int handle_check, ret, t_ret;

      dbenv = dbp->dbenv;

      PANIC_CHECK(dbenv);
      DB_ILLEGAL_BEFORE_OPEN(dbp, "DB->dump");

      ENV_ENTER(dbenv, ip);

      /* Check for replication block. */
      handle_check = IS_ENV_REPLICATED(dbenv);
      if (handle_check && (ret = __db_rep_enter(dbp, 1, 0, 1)) != 0) {
            handle_check = 0;
            goto err;
      }

      ret = __db_dump(dbp, subname, callback, handle, pflag, keyflag);

      /* Release replication block. */
      if (handle_check && (t_ret = __env_db_rep_exit(dbenv)) != 0 && ret == 0)
            ret = t_ret;

err:  ENV_LEAVE(dbenv, ip);
      return (ret);
}

/*
 * __db_dump --
 *    DB->dump.
 *
 * PUBLIC: int __db_dump __P((DB *, const char *,
 * PUBLIC:     int (*)(void *, const void *), void *, int, int));
 */
int
__db_dump(dbp, subname, callback, handle, pflag, keyflag)
      DB *dbp;
      const char *subname;
      int (*callback) __P((void *, const void *));
      void *handle;
      int pflag, keyflag;
{
      DB_ENV *dbenv;
      DBC *dbcp;
      DBT key, data;
      DBT keyret, dataret;
      db_recno_t recno;
      int is_recno, ret, t_ret;
      void *pointer;

      dbenv = dbp->dbenv;

      if ((ret = __db_prheader(
          dbp, subname, pflag, keyflag, handle, callback, NULL, 0)) != 0)
            return (ret);

      /*
       * Get a cursor and step through the database, printing out each
       * key/data pair.
       */
      if ((ret = __db_cursor(dbp, NULL, &dbcp, 0)) != 0)
            return (ret);

      memset(&key, 0, sizeof(key));
      memset(&data, 0, sizeof(data));
      if ((ret = __os_malloc(dbenv, 1024 * 1024, &data.data)) != 0)
            goto err;
      data.ulen = 1024 * 1024;
      data.flags = DB_DBT_USERMEM;
      is_recno = (dbp->type == DB_RECNO || dbp->type == DB_QUEUE);
      keyflag = is_recno ? keyflag : 1;
      if (is_recno) {
            keyret.data = &recno;
            keyret.size = sizeof(recno);
      }

retry: while ((ret =
          __dbc_get(dbcp, &key, &data, DB_NEXT | DB_MULTIPLE_KEY)) == 0) {
            DB_MULTIPLE_INIT(pointer, &data);
            for (;;) {
                  if (is_recno)
                        DB_MULTIPLE_RECNO_NEXT(pointer, &data,
                            recno, dataret.data, dataret.size);
                  else
                        DB_MULTIPLE_KEY_NEXT(pointer,
                            &data, keyret.data,
                            keyret.size, dataret.data, dataret.size);

                  if (dataret.data == NULL)
                        break;

                  if ((keyflag &&
                      (ret = __db_prdbt(&keyret, pflag, " ",
                      handle, callback, is_recno)) != 0) ||
                      (ret = __db_prdbt(&dataret, pflag, " ",
                      handle, callback, 0)) != 0)
                        goto err;
            }
      }
      if (ret == DB_BUFFER_SMALL) {
            data.size = (u_int32_t)DB_ALIGN(data.size, 1024);
            if ((ret = __os_realloc(dbenv, data.size, &data.data)) != 0)
                  goto err;
            data.ulen = data.size;
            goto retry;
      }
      if (ret == DB_NOTFOUND)
            ret = 0;

      if ((t_ret = __db_prfooter(handle, callback)) != 0 && ret == 0)
            ret = t_ret;

err:  if ((t_ret = __dbc_close(dbcp)) != 0 && ret == 0)
            ret = t_ret;
      if (data.data != NULL)
            __os_free(dbenv, data.data);

      return (ret);
}

/*
 * __db_prdbt --
 *    Print out a DBT data element.
 *
 * PUBLIC: int __db_prdbt __P((DBT *, int, const char *, void *,
 * PUBLIC:     int (*)(void *, const void *), int));
 */
int
__db_prdbt(dbtp, checkprint, prefix, handle, callback, is_recno)
      DBT *dbtp;
      int checkprint;
      const char *prefix;
      void *handle;
      int (*callback) __P((void *, const void *));
      int is_recno;
{
      static const u_char hex[] = "0123456789abcdef";
      db_recno_t recno;
      size_t len;
      int ret;
#define     DBTBUFLEN   100
      u_int8_t *p, *hp;
      char buf[DBTBUFLEN], hbuf[DBTBUFLEN];

      /*
       * !!!
       * This routine is the routine that dumps out items in the format
       * used by db_dump(1) and db_load(1).  This means that the format
       * cannot change.
       */
      if (prefix != NULL && (ret = callback(handle, prefix)) != 0)
            return (ret);
      if (is_recno) {
            /*
             * We're printing a record number, and this has to be done
             * in a platform-independent way.  So we use the numeral in
             * straight ASCII.
             */
            (void)__ua_memcpy(&recno, dbtp->data, sizeof(recno));
            snprintf(buf, DBTBUFLEN, "%lu", (u_long)recno);

            /* If we're printing data as hex, print keys as hex too. */
            if (!checkprint) {
                  for (len = strlen(buf), p = (u_int8_t *)buf,
                      hp = (u_int8_t *)hbuf; len-- > 0; ++p) {
                        *hp++ = hex[(u_int8_t)(*p & 0xf0) >> 4];
                        *hp++ = hex[*p & 0x0f];
                  }
                  *hp = '\0';
                  ret = callback(handle, hbuf);
            } else
                  ret = callback(handle, buf);

            if (ret != 0)
                  return (ret);
      } else if (checkprint) {
            for (len = dbtp->size, p = dbtp->data; len--; ++p)
                  if (isprint((int)*p)) {
                        if (*p == '\\' &&
                            (ret = callback(handle, "\\")) != 0)
                              return (ret);
                        snprintf(buf, DBTBUFLEN, "%c", *p);
                        if ((ret = callback(handle, buf)) != 0)
                              return (ret);
                  } else {
                        snprintf(buf, DBTBUFLEN, "\\%c%c",
                            hex[(u_int8_t)(*p & 0xf0) >> 4],
                            hex[*p & 0x0f]);
                        if ((ret = callback(handle, buf)) != 0)
                              return (ret);
                  }
      } else
            for (len = dbtp->size, p = dbtp->data; len--; ++p) {
                  snprintf(buf, DBTBUFLEN, "%c%c",
                      hex[(u_int8_t)(*p & 0xf0) >> 4],
                      hex[*p & 0x0f]);
                  if ((ret = callback(handle, buf)) != 0)
                        return (ret);
            }

      return (callback(handle, "\n"));
}

/*
 * __db_prheader --
 *    Write out header information in the format expected by db_load.
 *
 * PUBLIC: int    __db_prheader __P((DB *, const char *, int, int, void *,
 * PUBLIC:     int (*)(void *, const void *), VRFY_DBINFO *, db_pgno_t));
 */
int
__db_prheader(dbp, subname, pflag, keyflag, handle, callback, vdp, meta_pgno)
      DB *dbp;
      const char *subname;
      int pflag, keyflag;
      void *handle;
      int (*callback) __P((void *, const void *));
      VRFY_DBINFO *vdp;
      db_pgno_t meta_pgno;
{
      DBT dbt;
      DB_ENV *dbenv;
      DBTYPE dbtype;
      VRFY_PAGEINFO *pip;
      u_int32_t flags, tmp_u_int32;
      size_t buflen;
      char *buf;
      int using_vdp, ret, t_ret, tmp_int;

      ret = 0;
      buf = NULL;
      COMPQUIET(buflen, 0);

      /*
       * If dbp is NULL, then pip is guaranteed to be non-NULL; we only ever
       * call __db_prheader with a NULL dbp from one case inside __db_prdbt,
       * and this is a special subdatabase for "lost" items.  In this case
       * we have a vdp (from which we'll get a pip).  In all other cases, we
       * will have a non-NULL dbp (and vdp may or may not be NULL depending
       * on whether we're salvaging).
       */
      if (dbp == NULL)
            dbenv = NULL;
      else
            dbenv = dbp->dbenv;
      DB_ASSERT(dbenv, dbp != NULL || vdp != NULL);

      /*
       * If we've been passed a verifier statistics object, use that;  we're
       * being called in a context where dbp->stat is unsafe.
       *
       * Also, the verifier may set the pflag on a per-salvage basis.  If so,
       * respect that.
       */
      if (vdp != NULL) {
            if ((ret = __db_vrfy_getpageinfo(vdp, meta_pgno, &pip)) != 0)
                  return (ret);

            if (F_ISSET(vdp, SALVAGE_PRINTABLE))
                  pflag = 1;
            using_vdp = 1;
      } else {
            pip = NULL;
            using_vdp = 0;
      }

      /*
       * If dbp is NULL, make it a btree.  Otherwise, set dbtype to whatever
       * appropriate type for the specified meta page, or the type of the dbp.
       */
      if (dbp == NULL)
            dbtype = DB_BTREE;
      else if (using_vdp)
            switch (pip->type) {
            case P_BTREEMETA:
                  if (F_ISSET(pip, VRFY_IS_RECNO))
                        dbtype = DB_RECNO;
                  else
                        dbtype = DB_BTREE;
                  break;
            case P_HASHMETA:
                  dbtype = DB_HASH;
                  break;
            case P_QAMMETA:
                  dbtype = DB_QUEUE;
                  break;
            default:
                  /*
                   * If the meta page is of a bogus type, it's because
                   * we have a badly corrupt database.  (We must be in
                   * the verifier for pip to be non-NULL.) Pretend we're
                   * a Btree and salvage what we can.
                   */
                  DB_ASSERT(dbenv, F_ISSET(dbp, DB_AM_VERIFYING));
                  dbtype = DB_BTREE;
                  break;
            }
      else
            dbtype = dbp->type;

      if ((ret = callback(handle, "VERSION=3\n")) != 0)
            goto err;
      if (pflag) {
            if ((ret = callback(handle, "format=print\n")) != 0)
                  goto err;
      } else if ((ret = callback(handle, "format=bytevalue\n")) != 0)
            goto err;

      /*
       * 64 bytes is long enough, as a minimum bound, for any of the
       * fields besides subname.  Subname uses __db_prdbt and therefore
       * does not need buffer space here.
       */
      buflen = 64;
      if ((ret = __os_malloc(dbenv, buflen, &buf)) != 0)
            goto err;
      if (subname != NULL) {
            snprintf(buf, buflen, "database=");
            if ((ret = callback(handle, buf)) != 0)
                  goto err;
            DB_INIT_DBT(dbt, subname, strlen(subname));
            if ((ret = __db_prdbt(&dbt, 1, NULL, handle, callback, 0)) != 0)
                  goto err;
      }
      switch (dbtype) {
      case DB_BTREE:
            if ((ret = callback(handle, "type=btree\n")) != 0)
                  goto err;
            if (using_vdp)
                  tmp_int = F_ISSET(pip, VRFY_HAS_RECNUMS) ? 1 : 0;
            else {
                  if ((ret = __db_get_flags(dbp, &flags)) != 0) {
                        __db_err(dbenv, ret, "DB->get_flags");
                        goto err;
                  }
                  tmp_int = F_ISSET(dbp, DB_AM_RECNUM) ? 1 : 0;
            }
            if (tmp_int && (ret = callback(handle, "recnum=1\n")) != 0)
                  goto err;

            if (using_vdp)
                  tmp_u_int32 = pip->bt_minkey;
            else
                  if ((ret =
                      __bam_get_bt_minkey(dbp, &tmp_u_int32)) != 0) {
                        __db_err(dbenv, ret, "DB->get_bt_minkey");
                        goto err;
                  }
            if (tmp_u_int32 != 0 && tmp_u_int32 != DEFMINKEYPAGE) {
                  snprintf(buf, buflen,
                      "bt_minkey=%lu\n", (u_long)tmp_u_int32);
                  if ((ret = callback(handle, buf)) != 0)
                        goto err;
            }
            break;
      case DB_HASH:
#ifdef HAVE_HASH
            if ((ret = callback(handle, "type=hash\n")) != 0)
                  goto err;
            if (using_vdp)
                  tmp_u_int32 = pip->h_ffactor;
            else
                  if ((ret =
                      __ham_get_h_ffactor(dbp, &tmp_u_int32)) != 0) {
                        __db_err(dbenv, ret, "DB->get_h_ffactor");
                        goto err;
                  }
            if (tmp_u_int32 != 0) {
                  snprintf(buf, buflen,
                      "h_ffactor=%lu\n", (u_long)tmp_u_int32);
                  if ((ret = callback(handle, buf)) != 0)
                        goto err;
            }

            if (using_vdp)
                  tmp_u_int32 = pip->h_nelem;
            else
                  if ((ret = __ham_get_h_nelem(dbp, &tmp_u_int32)) != 0) {
                        __db_err(dbenv, ret, "DB->get_h_nelem");
                        goto err;
                  }
            /*
             * Hash databases have an h_nelem field of 0 or 1, neither
             * of those values is interesting.
             */
            if (tmp_u_int32 > 1) {
                  snprintf(buf, buflen,
                      "h_nelem=%lu\n", (u_long)tmp_u_int32);
                  if ((ret = callback(handle, buf)) != 0)
                        goto err;
            }
            break;
#else
            ret = __db_no_hash_am(dbenv);
            goto err;
#endif
      case DB_QUEUE:
#ifdef HAVE_QUEUE
            if ((ret = callback(handle, "type=queue\n")) != 0)
                  goto err;
            if (using_vdp)
                  tmp_u_int32 = vdp->re_len;
            else
                  if ((ret = __ram_get_re_len(dbp, &tmp_u_int32)) != 0) {
                        __db_err(dbenv, ret, "DB->get_re_len");
                        goto err;
                  }
            snprintf(buf, buflen, "re_len=%lu\n", (u_long)tmp_u_int32);
            if ((ret = callback(handle, buf)) != 0)
                  goto err;

            if (using_vdp)
                  tmp_int = (int)vdp->re_pad;
            else
                  if ((ret = __ram_get_re_pad(dbp, &tmp_int)) != 0) {
                        __db_err(dbenv, ret, "DB->get_re_pad");
                        goto err;
                  }
            if (tmp_int != 0 && tmp_int != ' ') {
                  snprintf(buf, buflen, "re_pad=%#x\n", tmp_int);
                  if ((ret = callback(handle, buf)) != 0)
                        goto err;
            }

            if (using_vdp)
                  tmp_u_int32 = vdp->page_ext;
            else
                  if ((ret =
                      __qam_get_extentsize(dbp, &tmp_u_int32)) != 0) {
                        __db_err(dbenv, ret, "DB->get_q_extentsize");
                        goto err;
                  }
            if (tmp_u_int32 != 0) {
                  snprintf(buf, buflen,
                      "extentsize=%lu\n", (u_long)tmp_u_int32);
                  if ((ret = callback(handle, buf)) != 0)
                        goto err;
            }
            break;
#else
            ret = __db_no_queue_am(dbenv);
            goto err;
#endif
      case DB_RECNO:
            if ((ret = callback(handle, "type=recno\n")) != 0)
                  goto err;
            if (using_vdp)
                  tmp_int = F_ISSET(pip, VRFY_IS_RRECNO) ? 1 : 0;
            else
                  tmp_int = F_ISSET(dbp, DB_AM_RENUMBER) ? 1 : 0;
            if (tmp_int != 0 &&
                (ret = callback(handle, "renumber=1\n")) != 0)
                        goto err;

            if (using_vdp)
                  tmp_int = F_ISSET(pip, VRFY_IS_FIXEDLEN) ? 1 : 0;
            else
                  tmp_int = F_ISSET(dbp, DB_AM_FIXEDLEN) ? 1 : 0;
            if (tmp_int) {
                  if (using_vdp)
                        tmp_u_int32 = pip->re_len;
                  else
                        if ((ret =
                            __ram_get_re_len(dbp, &tmp_u_int32)) != 0) {
                              __db_err(dbenv, ret, "DB->get_re_len");
                              goto err;
                        }
                  snprintf(buf, buflen,
                      "re_len=%lu\n", (u_long)tmp_u_int32);
                  if ((ret = callback(handle, buf)) != 0)
                        goto err;

                  if (using_vdp)
                        tmp_int = (int)pip->re_pad;
                  else
                        if ((ret =
                            __ram_get_re_pad(dbp, &tmp_int)) != 0) {
                              __db_err(dbenv, ret, "DB->get_re_pad");
                              goto err;
                        }
                  if (tmp_int != 0 && tmp_int != ' ') {
                        snprintf(buf,
                            buflen, "re_pad=%#x\n", (u_int)tmp_int);
                        if ((ret = callback(handle, buf)) != 0)
                              goto err;
                  }
            }
            break;
      case DB_UNKNOWN:              /* Impossible. */
            ret = __db_unknown_path(dbenv, "__db_prheader");
            goto err;
      }

      if (using_vdp) {
            if (F_ISSET(pip, VRFY_HAS_CHKSUM))
                  if ((ret = callback(handle, "chksum=1\n")) != 0)
                        goto err;
            if (F_ISSET(pip, VRFY_HAS_DUPS))
                  if ((ret = callback(handle, "duplicates=1\n")) != 0)
                        goto err;
            if (F_ISSET(pip, VRFY_HAS_DUPSORT))
                  if ((ret = callback(handle, "dupsort=1\n")) != 0)
                        goto err;
            /*
             * !!!
             * We don't know if the page size was the default if we're
             * salvaging.  It doesn't seem that interesting to have, so
             * we ignore it for now.
             */
      } else {
            if (F_ISSET(dbp, DB_AM_CHKSUM))
                  if ((ret = callback(handle, "chksum=1\n")) != 0)
                        goto err;
            if (F_ISSET(dbp, DB_AM_DUP))
                  if ((ret = callback(handle, "duplicates=1\n")) != 0)
                        goto err;
            if (F_ISSET(dbp, DB_AM_DUPSORT))
                  if ((ret = callback(handle, "dupsort=1\n")) != 0)
                        goto err;
            if (!F_ISSET(dbp, DB_AM_PGDEF)) {
                  snprintf(buf, buflen,
                      "db_pagesize=%lu\n", (u_long)dbp->pgsize);
                  if ((ret = callback(handle, buf)) != 0)
                        goto err;
            }
      }

      if (keyflag && (ret = callback(handle, "keys=1\n")) != 0)
            goto err;

      ret = callback(handle, "HEADER=END\n");

err:  if (using_vdp &&
          (t_ret = __db_vrfy_putpageinfo(dbenv, vdp, pip)) != 0 && ret == 0)
            ret = t_ret;
      if (buf != NULL)
            __os_free(dbenv, buf);

      return (ret);
}

/*
 * __db_prfooter --
 *    Print the footer that marks the end of a DB dump.  This is trivial,
 *    but for consistency's sake we don't want to put its literal contents
 *    in multiple places.
 *
 * PUBLIC: int __db_prfooter __P((void *, int (*)(void *, const void *)));
 */
int
__db_prfooter(handle, callback)
      void *handle;
      int (*callback) __P((void *, const void *));
{
      return (callback(handle, "DATA=END\n"));
}

/*
 * __db_pr_callback --
 *    Callback function for using pr_* functions from C.
 *
 * PUBLIC: int  __db_pr_callback __P((void *, const void *));
 */
int
__db_pr_callback(handle, str_arg)
      void *handle;
      const void *str_arg;
{
      char *str;
      FILE *f;

      str = (char *)str_arg;
      f = (FILE *)handle;

      if (fprintf(f, "%s", str) != (int)strlen(str))
            return (EIO);

      return (0);
}

/*
 * __db_dbtype_to_string --
 *    Return the name of the database type.
 *
 * PUBLIC: const char * __db_dbtype_to_string __P((DBTYPE));
 */
const char *
__db_dbtype_to_string(type)
      DBTYPE type;
{
      switch (type) {
      case DB_BTREE:
            return ("btree");
      case DB_HASH:
            return ("hash");
      case DB_RECNO:
            return ("recno");
      case DB_QUEUE:
            return ("queue");
      case DB_UNKNOWN:
      default:
            break;
      }
      return ("UNKNOWN TYPE");
}

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