db_auto.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

	memcpy(bp, &txn_num, sizeof(txn_num));
	bp += sizeof(txn_num);

	memcpy(bp, lsnp, sizeof(DB_LSN));
	bp += sizeof(DB_LSN);

	DB_ASSERT(dbp->log_filename != NULL);
	if (dbp->log_filename->id == DB_LOGFILEID_INVALID &&
	    (ret = __dbreg_lazy_id(dbp)) != 0)
		return (ret);

	uinttmp = (u_int32_t)dbp->log_filename->id;
	memcpy(bp, &uinttmp, sizeof(uinttmp));
	bp += sizeof(uinttmp);

	uinttmp = (u_int32_t)pgno;
	memcpy(bp, &uinttmp, sizeof(uinttmp));
	bp += sizeof(uinttmp);

	if (prevlsn != NULL)
		memcpy(bp, prevlsn, sizeof(*prevlsn));
	else
		memset(bp, 0, sizeof(*prevlsn));
	bp += sizeof(*prevlsn);

	DB_ASSERT((u_int32_t)(bp - (u_int8_t *)logrec.data) <= logrec.size);
	ret = dbenv->log_put(dbenv,
	   ret_lsnp, (DBT *)&logrec, flags | DB_NOCOPY);
	if (txnid != NULL && ret == 0)
		txnid->last_lsn = *ret_lsnp;
#ifdef LOG_DIAGNOSTIC
	if (ret != 0)
		(void)__db_noop_print(dbenv,
		    (DBT *)&logrec, ret_lsnp, NULL, NULL);
#endif
	__os_free(dbenv, logrec.data);
	return (ret);
}

/*
 * PUBLIC: int __db_noop_getpgnos __P((DB_ENV *, DBT *, DB_LSN *,
 * PUBLIC:     db_recops, void *));
 */
int
__db_noop_getpgnos(dbenv, rec, lsnp, notused1, summary)
	DB_ENV *dbenv;
	DBT *rec;
	DB_LSN *lsnp;
	db_recops notused1;
	void *summary;
{
	DB *dbp;
	TXN_RECS *t;
	__db_noop_args *argp;
	u_int32_t ret;

	COMPQUIET(notused1, DB_TXN_ABORT);

	argp = NULL;
	t = (TXN_RECS *)summary;

	if ((ret = __db_noop_read(dbenv, rec->data, &argp)) != 0)
		return (ret);

	if ((ret = __dbreg_id_to_db(dbenv,
	    argp->txnid, &dbp, argp->fileid, 0)) != 0)
		goto err;

	if ((ret = __rep_check_alloc(dbenv, t, 1)) != 0)
		goto err;

	t->array[t->npages].flags = 0;
	t->array[t->npages].fid = argp->fileid;
	t->array[t->npages].lsn = *lsnp;
	t->array[t->npages].pgdesc.pgno = argp->pgno;
	t->array[t->npages].pgdesc.type = DB_PAGE_LOCK;
	memcpy(t->array[t->npages].pgdesc.fileid, dbp->fileid,
	    DB_FILE_ID_LEN);
	t->npages++;

err:	if (argp != NULL)
	__os_free(dbenv, argp);
	return (ret);
}

/*
 * PUBLIC: int __db_noop_print __P((DB_ENV *, DBT *, DB_LSN *,
 * PUBLIC:     db_recops, void *));
 */
int
__db_noop_print(dbenv, dbtp, lsnp, notused2, notused3)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops notused2;
	void *notused3;
{
	__db_noop_args *argp;
	int ret;

	notused2 = DB_TXN_ABORT;
	notused3 = NULL;

	if ((ret = __db_noop_read(dbenv, dbtp->data, &argp)) != 0)
		return (ret);
	(void)printf(
	    "[%lu][%lu]__db_noop: rec: %lu txnid %lx prevlsn [%lu][%lu]\n",
	    (u_long)lsnp->file,
	    (u_long)lsnp->offset,
	    (u_long)argp->type,
	    (u_long)argp->txnid->txnid,
	    (u_long)argp->prev_lsn.file,
	    (u_long)argp->prev_lsn.offset);
	(void)printf("\tfileid: %ld\n", (long)argp->fileid);
	(void)printf("\tpgno: %lu\n", (u_long)argp->pgno);
	(void)printf("\tprevlsn: [%lu][%lu]\n",
	    (u_long)argp->prevlsn.file, (u_long)argp->prevlsn.offset);
	(void)printf("\n");
	__os_free(dbenv, argp);
	return (0);
}

/*
 * PUBLIC: int __db_noop_read __P((DB_ENV *, void *, __db_noop_args **));
 */
int
__db_noop_read(dbenv, recbuf, argpp)
	DB_ENV *dbenv;
	void *recbuf;
	__db_noop_args **argpp;
{
	__db_noop_args *argp;
	u_int32_t uinttmp;
	u_int8_t *bp;
	int ret;

	if ((ret = __os_malloc(dbenv,
	    sizeof(__db_noop_args) + sizeof(DB_TXN), &argp)) != 0)
		return (ret);

	argp->txnid = (DB_TXN *)&argp[1];

	bp = recbuf;
	memcpy(&argp->type, bp, sizeof(argp->type));
	bp += sizeof(argp->type);

	memcpy(&argp->txnid->txnid,  bp, sizeof(argp->txnid->txnid));
	bp += sizeof(argp->txnid->txnid);

	memcpy(&argp->prev_lsn, bp, sizeof(DB_LSN));
	bp += sizeof(DB_LSN);

	memcpy(&uinttmp, bp, sizeof(uinttmp));
	argp->fileid = (int32_t)uinttmp;
	bp += sizeof(uinttmp);

	memcpy(&uinttmp, bp, sizeof(uinttmp));
	argp->pgno = (db_pgno_t)uinttmp;
	bp += sizeof(uinttmp);

	memcpy(&argp->prevlsn, bp,  sizeof(argp->prevlsn));
	bp += sizeof(argp->prevlsn);

	*argpp = argp;
	return (0);
}

/*
 * PUBLIC: int __db_pg_alloc_log __P((DB *, DB_TXN *, DB_LSN *,
 * PUBLIC:     u_int32_t, DB_LSN *, db_pgno_t, DB_LSN *, db_pgno_t, u_int32_t,
 * PUBLIC:     db_pgno_t));
 */
int
__db_pg_alloc_log(dbp, txnid, ret_lsnp, flags, meta_lsn, meta_pgno, page_lsn, pgno, ptype,
    next)
	DB *dbp;
	DB_TXN *txnid;
	DB_LSN *ret_lsnp;
	u_int32_t flags;
	DB_LSN * meta_lsn;
	db_pgno_t meta_pgno;
	DB_LSN * page_lsn;
	db_pgno_t pgno;
	u_int32_t ptype;
	db_pgno_t next;
{
	DBT logrec;
	DB_ENV *dbenv;
	DB_LSN *lsnp, null_lsn;
	u_int32_t uinttmp;
	u_int32_t npad, rectype, txn_num;
	int ret;
	u_int8_t *bp;

	dbenv = dbp->dbenv;
	rectype = DB___db_pg_alloc;
	npad = 0;

	if (txnid == NULL) {
		txn_num = 0;
		null_lsn.file = 0;
		null_lsn.offset = 0;
		lsnp = &null_lsn;
	} else {
		if (TAILQ_FIRST(&txnid->kids) != NULL &&
		    (ret = __txn_activekids(dbenv, rectype, txnid)) != 0)
			return (ret);
		txn_num = txnid->txnid;
		lsnp = &txnid->last_lsn;
	}

	logrec.size = sizeof(rectype) + sizeof(txn_num) + sizeof(DB_LSN)
	    + sizeof(u_int32_t)
	    + sizeof(*meta_lsn)
	    + sizeof(u_int32_t)
	    + sizeof(*page_lsn)
	    + sizeof(u_int32_t)
	    + sizeof(u_int32_t)
	    + sizeof(u_int32_t);
	if (CRYPTO_ON(dbenv)) {
		npad =
		    ((DB_CIPHER *)dbenv->crypto_handle)->adj_size(logrec.size);
		logrec.size += npad;
	}

	if ((ret = __os_malloc(dbenv,
	    logrec.size, &logrec.data)) != 0)
		return (ret);

	if (npad > 0)
		memset((u_int8_t *)logrec.data + logrec.size - npad, 0, npad);

	bp = logrec.data;

	memcpy(bp, &rectype, sizeof(rectype));
	bp += sizeof(rectype);

	memcpy(bp, &txn_num, sizeof(txn_num));
	bp += sizeof(txn_num);

	memcpy(bp, lsnp, sizeof(DB_LSN));
	bp += sizeof(DB_LSN);

	DB_ASSERT(dbp->log_filename != NULL);
	if (dbp->log_filename->id == DB_LOGFILEID_INVALID &&
	    (ret = __dbreg_lazy_id(dbp)) != 0)
		return (ret);

	uinttmp = (u_int32_t)dbp->log_filename->id;
	memcpy(bp, &uinttmp, sizeof(uinttmp));
	bp += sizeof(uinttmp);

	if (meta_lsn != NULL)
		memcpy(bp, meta_lsn, sizeof(*meta_lsn));
	else
		memset(bp, 0, sizeof(*meta_lsn));
	bp += sizeof(*meta_lsn);

	uinttmp = (u_int32_t)meta_pgno;
	memcpy(bp, &uinttmp, sizeof(uinttmp));
	bp += sizeof(uinttmp);

	if (page_lsn != NULL)
		memcpy(bp, page_lsn, sizeof(*page_lsn));
	else
		memset(bp, 0, sizeof(*page_lsn));
	bp += sizeof(*page_lsn);

	uinttmp = (u_int32_t)pgno;
	memcpy(bp, &uinttmp, sizeof(uinttmp));
	bp += sizeof(uinttmp);

	uinttmp = (u_int32_t)ptype;
	memcpy(bp, &uinttmp, sizeof(uinttmp));
	bp += sizeof(uinttmp);

	uinttmp = (u_int32_t)next;
	memcpy(bp, &uinttmp, sizeof(uinttmp));
	bp += sizeof(uinttmp);

	DB_ASSERT((u_int32_t)(bp - (u_int8_t *)logrec.data) <= logrec.size);
	ret = dbenv->log_put(dbenv,
	   ret_lsnp, (DBT *)&logrec, flags | DB_NOCOPY);
	if (txnid != NULL && ret == 0)
		txnid->last_lsn = *ret_lsnp;
#ifdef LOG_DIAGNOSTIC
	if (ret != 0)
		(void)__db_pg_alloc_print(dbenv,
		    (DBT *)&logrec, ret_lsnp, NULL, NULL);
#endif
	__os_free(dbenv, logrec.data);
	return (ret);
}

/*
 * PUBLIC: int __db_pg_alloc_getpgnos __P((DB_ENV *, DBT *, DB_LSN *,
 * PUBLIC:     db_recops, void *));
 */
int
__db_pg_alloc_getpgnos(dbenv, rec, lsnp, notused1, summary)
	DB_ENV *dbenv;
	DBT *rec;
	DB_LSN *lsnp;
	db_recops notused1;
	void *summary;
{
	DB *dbp;
	TXN_RECS *t;
	__db_pg_alloc_args *argp;
	u_int32_t ret;

	COMPQUIET(notused1, DB_TXN_ABORT);

	argp = NULL;
	t = (TXN_RECS *)summary;

	if ((ret = __db_pg_alloc_read(dbenv, rec->data, &argp)) != 0)
		return (ret);

	if ((ret = __dbreg_id_to_db(dbenv,
	    argp->txnid, &dbp, argp->fileid, 0)) != 0)
		goto err;

	if ((ret = __rep_check_alloc(dbenv, t, 2)) != 0)
		goto err;

	t->array[t->npages].flags = 0;
	t->array[t->npages].fid = argp->fileid;
	t->array[t->npages].lsn = *lsnp;
	t->array[t->npages].pgdesc.pgno = argp->meta_pgno;
	t->array[t->npages].pgdesc.type = DB_PAGE_LOCK;
	memcpy(t->array[t->npages].pgdesc.fileid, dbp->fileid,
	    DB_FILE_ID_LEN);
	t->npages++;
	t->array[t->npages].flags = 0;
	t->array[t->npages].fid = argp->fileid;
	t->array[t->npages].lsn = *lsnp;
	t->array[t->npages].pgdesc.pgno = argp->pgno;
	t->array[t->npages].pgdesc.type = DB_PAGE_LOCK;
	memcpy(t->array[t->npages].pgdesc.fileid, dbp->fileid,
	    DB_FILE_ID_LEN);
	t->npages++;

err:	if (argp != NULL)
	__os_free(dbenv, argp);
	return (ret);
}

/*
 * PUBLIC: int __db_pg_alloc_print __P((DB_ENV *, DBT *, DB_LSN *,
 * PUBLIC:     db_recops, void *));
 */
int
__db_pg_alloc_print(dbenv, dbtp, lsnp, notused2, notused3)
	DB_ENV *dbenv;
	DBT *dbtp;
	DB_LSN *lsnp;
	db_recops notused2;
	void *notused3;
{
	__db_pg_alloc_args *argp;
	int ret;

	notused2 = DB_TXN_ABORT;
	notused3 = NULL;

	if ((ret = __db_pg_alloc_read(dbenv, dbtp->data, &argp)) != 0)
		return (ret);
	(void)printf(
	    "[%lu][%lu]__db_pg_alloc: rec: %lu txnid %lx prevlsn [%lu][%lu]\n",
	    (u_long)lsnp->file,
	    (u_long)lsnp->offset,
	    (u_long)argp->type,
	    (u_long)argp->txnid->txnid,
	    (u_long)argp->prev_lsn.file,
	    (u_long)argp->prev_lsn.offset);
	(void)printf("\tfileid: %ld\n", (long)argp->fileid);
	(void)printf("\tmeta_lsn: [%lu][%lu]\n",
	    (u_long)argp->meta_lsn.file, (u_long)argp->meta_lsn.offset);
	(void)printf("\tmeta_pgno: %lu\n", (u_long)argp->meta_pgno);
	(void)printf("\tpage_lsn: [%lu][%lu]\n",
	    (u_long)argp->page_lsn.file, (u_long)argp->page_lsn.offset);
	(void)printf("\tpgno: %lu\n", (u_long)argp->pgno);
	(void)printf("\tptype: %lu\n", (u_long)argp->ptype);
	(void)printf("\tnext: %lu\n", (u_long)argp->next);
	(void)printf("\n");
	__os_free(dbenv, argp);
	return (0);
}

/*
 * PUBLIC: int __db_pg_alloc_read __P((DB_ENV *, void *,
 * PUBLIC:     __db_pg_alloc_args **));
 */
int
__db_pg_alloc_read(dbenv, recbuf, argpp)
	DB_ENV *dbenv;
	void *recbuf;
	__db_pg_alloc_args **argpp;
{
	__db_pg_alloc_args *argp;
	u_int32_t uinttmp;
	u_int8_t *bp;
	int ret;

	if ((ret = __os_malloc(dbenv,
	    sizeof(__db_pg_alloc_args) + sizeof(DB_TXN), &argp)) != 0)
		return (ret);

	argp->txnid = (DB_TXN *)&argp[1];

	bp = recbuf;
	memcpy(&argp->type, bp, sizeof(argp->type));
	bp += sizeof(argp->type);

	memcpy(&argp->txnid->txnid,  bp, sizeof(argp->txnid->txnid));
	bp += sizeof(argp->txnid->txnid);

	memcpy(&argp->prev_lsn, bp, sizeof(DB_LSN));
	bp += sizeof(DB_LSN);

	memcpy(&uinttmp, bp, sizeof(uinttmp));
	argp->fileid = (int32_t)uinttmp;
	bp += sizeof(uinttmp);

	memcpy(&argp->meta_lsn, bp,  sizeof(argp->meta_lsn));
	bp += sizeof(argp->meta_lsn);

	memcpy(&uinttmp, bp, sizeof(uinttmp));
	argp->meta_pgno = (db_pgno_t)uinttmp;
	bp += sizeof(uinttmp);

	memcpy(&argp->page_lsn, bp,  sizeof(argp->page_lsn));
	bp += sizeof(argp->page_lsn);

	memcpy(&uinttmp, bp, sizeof(uinttmp));
	argp->pgno = (db_pgno_t)uinttmp;
	bp += sizeof(uinttmp);

	memcpy(&uinttmp, bp, sizeof(uinttmp));
	argp->ptype = (u_int32_t)uinttmp;
	bp += sizeof(uinttmp);

	memcpy(&uinttmp, bp, sizeof(uinttmp));
	argp->next = (db_pgno_t)uinttmp;
	bp += sizeof(uinttmp);

	*argpp = argp;
	return (0);
}

/*
 * PUBLIC: int __db_pg_free_log __P((DB *, DB_TXN *, DB_LSN *,
 * PUBLIC:     u_int32_t, db_pgno_t, DB_LSN *, db_pgno_t, const DBT *,
 * PUBLIC:     db_pgno_t));
 */
int
__db_pg_free_log(dbp, txnid, ret_lsnp, flags, pgno, meta_lsn, meta_pgno, header, next)
	DB *dbp;
	DB_TXN *txnid;
	DB_LSN *ret_lsnp;
	u_int32_t flags;
	db_pgno_t pgno;
	DB_LSN * meta_lsn;
	db_pgno_t meta_pgno;
	const DBT *header;
	db_pgno_t next;
{
	DBT logrec;
	DB_ENV *dbenv;
	DB_LSN *lsnp, null_lsn;
	u_int32_t zero;
	u_int32_t uinttmp;
	u_int32_t npad, rectype, txn_num;
	int ret;
	u_int8_t *bp;

	dbenv = dbp->dbenv;
	rectype = DB___db_pg_free;
	npad = 0;

	if (txnid == NULL) {
		txn_num = 0;
		null_lsn.file = 0;
		null_lsn.offset = 0;
		lsnp = &null_lsn;
	} else {
		if (TAILQ_FIRST(&txnid->kids) != NULL &&
		    (ret = __txn_activekids(dbenv, rectype, txnid)) != 0)
			return (ret);
		txn_num = txnid->txnid;
		lsnp = &txnid->last_lsn;
	}

	logrec.size = sizeof(rectype) + sizeof(txn_num) + sizeof(DB_LSN)
	    + sizeof(u_int32_t)
	    + sizeof(u_int32_t)
	    + sizeof(*meta_lsn)
	    + sizeof(u_int32_t)
	    + sizeof(u_int32_t) + (header == NULL ? 0 : header->size)
	    + sizeof(u_int32_t);
	if (CRYPTO_ON(dbenv)) {
		npad =
		    ((DB_CIPHER *)dbenv->crypto_handle)->adj_size(logrec.size);
		logrec.size += npad;
	}

	if ((ret = __os_malloc(dbenv,
	    logrec.size, &logrec.data)) != 0)
		return (ret);

	if (npad > 0)
		memset((u_int8_t *)logrec.data + logrec.size - npad, 0, npad);

	bp = logrec.data;

	memcpy(bp, &rectype, sizeof(rectype));