db_pr.c

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1996-2002
 *	Sleepycat Software.  All rights reserved.
 */

#include "db_config.h"

#ifndef lint
static const char revid[] = "$Id: db_pr.c,v 11.84 2002/09/10 02:45:20 bostic Exp $";
#endif /* not lint */

#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>

#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#endif

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

static int	 __db_bmeta __P((DB *, FILE *, BTMETA *, u_int32_t));
static int	 __db_hmeta __P((DB *, FILE *, HMETA *, u_int32_t));
static void	 __db_meta __P((DB *, DBMETA *, FILE *, FN const *, u_int32_t));
static const char *__db_pagetype_to_string __P((u_int32_t));
static void	 __db_prdb __P((DB *, FILE *));
static void	 __db_proff __P((void *, FILE *));
static int	 __db_prtree __P((DB *, FILE *, u_int32_t));
static int	 __db_qmeta __P((DB *, FILE *, QMETA *, u_int32_t));

/*
 * __db_loadme --
 *	A nice place to put a breakpoint.
 *
 * PUBLIC: void __db_loadme __P((void));
 */
void
__db_loadme()
{
	u_int32_t id;

	__os_id(&id);
}

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

	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)
		fp = stdout;
	else {
		if ((fp = fopen(name, "w")) == NULL)
			return (__os_get_errno());
	}

	__db_prdb(dbp, fp);

	fprintf(fp, "%s\n", DB_LINE);

	ret = __db_prtree(dbp, fp, flags);

	fflush(fp);
	if (name != NULL)
		fclose(fp);

	return (ret);
}

/*
 * __db_inmemdbflags --
 *	Call a callback for printing or other handling of strings associated
 * with whatever in-memory DB structure flags are set.
 *
 * PUBLIC: void __db_inmemdbflags __P((u_int32_t, void *,
 * PUBLIC:     void (*)(u_int32_t, const FN *, void *)));
 */
void
__db_inmemdbflags(flags, cookie, callback)
	u_int32_t flags;
	void *cookie;
	void (*callback) __P((u_int32_t, const FN *, void *));
{
	static const FN fn[] = {
		{ DB_AM_CHKSUM,		"checksumming" },
		{ DB_AM_CL_WRITER,	"client replica writer" },
		{ 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_DIRTY,		"dirty reads" },
		{ 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_OPEN_CALLED,	"DB->open called" },
		{ DB_AM_PAD,		"pad value" },
		{ DB_AM_PGDEF,		"default page size" },
		{ DB_AM_RDONLY,		"read-only" },
		{ 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 }
	};

	callback(flags, fn, cookie);
}

/*
 * __db_prdb --
 *	Print out the DB structure information.
 */
static void
__db_prdb(dbp, fp)
	DB *dbp;
	FILE *fp;
{
	BTREE *bt;
	HASH *h;
	QUEUE *q;

	fprintf(fp,
	    "In-memory DB structure:\n%s: %#lx",
	    __db_dbtype_to_string(dbp->type), (u_long)dbp->flags);
	__db_inmemdbflags(dbp->flags, fp, __db_prflags);
	fprintf(fp, "\n");

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

/*
 * __db_prtree --
 *	Print out the entire tree.
 */
static int
__db_prtree(dbp, fp, flags)
	DB *dbp;
	FILE *fp;
	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, fp, flags));

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

	return (0);
}

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

	mpf = dbp->mpf;

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

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

	if (fn != NULL) {
		fprintf(fp, "\tflags: %#lx", (u_long)dbmeta->flags);
		__db_prflags(dbmeta->flags, fn, fp);
		fprintf(fp, "\n");
	}

	fprintf(fp, "\tuid: ");
	for (p = (u_int8_t *)dbmeta->uid,
	    cnt = 0; cnt < DB_FILE_ID_LEN; ++cnt) {
		fprintf(fp, "%x", *p++);
		if (cnt < DB_FILE_ID_LEN - 1)
			fprintf(fp, " ");
	}
	fprintf(fp, "\n");
}

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

	__db_meta(dbp, (DBMETA *)h, fp, mfn, flags);

	fprintf(fp, "\tmaxkey: %lu minkey: %lu\n",
	    (u_long)h->maxkey, (u_long)h->minkey);
	if (dbp->type == DB_RECNO)
		fprintf(fp, "\tre_len: %#lx re_pad: %lu\n",
		    (u_long)h->re_len, (u_long)h->re_pad);
	fprintf(fp, "\troot: %lu\n", (u_long)h->root);

	return (0);
}

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

	__db_meta(dbp, (DBMETA *)h, fp, mfn, flags);

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

	return (0);
}

/*
 * __db_qmeta --
 *	Print out the queue meta-data page.
 */
static int
__db_qmeta(dbp, fp, h, flags)
	DB *dbp;
	FILE *fp;
	QMETA *h;
	u_int32_t flags;
{
	__db_meta(dbp, (DBMETA *)h, fp, NULL, flags);

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

	return (0);
}

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

	mpf = dbp->mpf;

	if ((ret = mpf->get(mpf, &pgno, 0, &h)) != 0)